JP6970604B2 - Fastening device and mixer car equipped with it - Google Patents

Description

The present invention relates to a fastening device and a mixer vehicle including the fastening device.

A fastening device for fastening a main frame of a vehicle and a subframe that rotatably supports a mixer drum is known (see Patent Document 1).

Japanese Unexamined Patent Publication No. 2000-318640

In the fastening device described in Patent Document 1, the subframe is displaced in the front-rear, left-right direction of the vehicle with respect to the main frame due to the impact caused by the start and stop of the vehicle, the vibration during the running of the vehicle, and the like. There is a risk.

The present invention has been made in view of the above problems, and an object of the present invention is to prevent the support frame from being displaced with respect to the vehicle body frame.

The first invention is a fastening device for fastening a vehicle body frame and a support frame, wherein the vehicle body frame and the support frame are sandwiched and supported from above and below, and the vehicle body frame and the support frame by the pair of sandwiching portions. A fastener having an adjusting portion for adjusting a pressing force against the fastener, and a fixing portion fixed to a support frame and engaging with the fastener are provided, and the fixed portion is provided with a flat plate portion and an engagement with the fastener. Possible engaging portions are provided, a plurality of engaging portions are provided side by side in the front-rear direction on the flat plate portion, and the fasteners are engaged with the fixing portion in the front-rear and left-right directions with respect to the support frame. The movement is restricted, and the holding portion on the support frame side is engaged with at least one of the plurality of engaging portions, so that the movement in the front-rear direction with respect to the support frame is restricted.

In the first invention, by engaging the fastener with the fixing portion, the movement of the fastener with respect to the support frame in the front-back and left-right directions is restricted. In other words, the movement of the support frame with respect to the fastener in the front-back and left-right directions is restricted. In addition, the engagement position of the fastener with respect to the fixing portion can be adjusted.

The second invention is a fastening device for fastening the vehicle body frame and the support frame, wherein the vehicle body frame and the support frame are sandwiched and supported from above and below, and the vehicle body frame and the support frame by the pair of sandwiching portions. A fastener having an adjusting portion for adjusting the pressing force against the vehicle, and a fixing portion fixed to the support frame and engaging with the fastener are provided, and the adjusting portions are arranged on the left and right sides of the vehicle body frame and the support frame. It has a pair of left and right shaft portions, and the fixing portion is provided with a plurality of engaging portions that can be engaged with the fasteners side by side in the front-rear direction, and the fastener is at least one of the plurality of engaging portions. By engaging the holding portion on the support frame side, the movement in the front-rear direction with respect to the support frame is restricted, and by engaging the fixed portion and the pair of left and right shaft portions, the movement in the left-right direction with respect to the support frame is restricted. Is characterized by being regulated.

In the third aspect of the invention, the sandwiching portion on the support frame side is provided with an fitting portion, the fixing portion is provided with a recess into which the fitting portion is fitted, and the fastener is such that the fitting portion and the recess are engaged with each other. Therefore, the movement in the front-rear direction with respect to the support frame is restricted.

A fourth invention is a fastening device for fastening a vehicle body frame and a support frame, wherein the vehicle body frame and the support frame are sandwiched and supported from above and below, and the vehicle body frame and the support frame are supported by the pair of sandwiching portions. A fastener having an adjusting portion for adjusting the pressing force against the vehicle, and a fixing portion fixed to the support frame and engaging with the fastener are provided, and the adjusting portion is arranged on the left and right sides of the vehicle body frame and the support frame. The fastener has a pair of left and right shaft portions, and the fastener is restricted from moving in the left-right direction with respect to the support frame by engaging the fixed portion and the pair of left and right shaft portions, and the fixed portion and the holding portion are engaged with each other. By fitting, the movement in the front-rear direction with respect to the support frame is restricted .

A fifth invention is a fastening device for fastening a vehicle body frame and a support frame, wherein the vehicle body frame and the support frame are sandwiched and supported from above and below, and the vehicle body frame and the support frame are supported by the pair of sandwiching portions. A fastener having an adjusting portion for adjusting the pressing force against the vehicle, and a fixing portion fixed to the support frame and engaging with the fastener are provided, and the adjusting portion is arranged on the left and right sides of the vehicle body frame and the support frame. It has a pair of left and right shaft portions, the fixing portion is provided on the upper surface of the support frame, and the fastener is restricted from moving in the front-back and left-right directions with respect to the support frame by engaging with the fixing portion. It is characterized in that movement in the left-right direction with respect to the support frame is restricted by engaging the pair of left and right shaft portions.

A sixth invention is a fastening device for fastening a vehicle body frame and a support frame, wherein the vehicle body frame and the support frame are sandwiched and supported from above and below, and the vehicle body frame and the support frame are supported by the pair of sandwiching portions. A fastener having an adjusting portion for adjusting the pressing force against the vehicle, and a fixing portion fixed to the support frame and engaging with the fastener are provided, and the adjusting portion is arranged on the left and right sides of the vehicle body frame and the support frame. It has a pair of left and right shaft portions, the pair of holding portions are formed separately from the pair of left and right shaft portions, and the fastener is engaged with the fixing portion in the front-back and left-right directions with respect to the support frame. The movement is restricted, and the fixed portion and the pair of left and right shaft portions are engaged with each other, so that the movement in the left-right direction with respect to the support frame is restricted .

A seventh aspect of the invention is characterized in that the fastener is restricted from moving in the left-right direction with respect to the support frame by engaging the fitting portion and the recess .

Eighth invention is a fastening device for fastening a vehicle body frame and a support frame, wherein the vehicle body frame and the support frame are sandwiched and supported from above and below, and the vehicle body frame and the support frame by the pair of sandwiching portions. It is provided with a fastener having an adjusting portion for adjusting the pressing force against the bearing, and a fixing portion fixed to the support frame and engageable with the fastener, and the fixing portion has a plurality of peaks and a plurality of valleys. : it is formed uneven portion provided alternately, respectively, fasteners, by engaging a fixed portion, that is movement in the longitudinal and lateral directions relative to the support frame is restricted, irregular portion is engaged with the fastener It is characterized by. In the second to eighth inventions, the movement of the fastener with respect to the support frame can be restricted by a simple structure.

The ninth invention is characterized in that the fixing portion is welded to the support frame .

In the ninth invention, when the support frame is a welded structure, the fixed portion can be welded to the support frame in the process of manufacturing the support frame. Therefore, in the process of assembling the support frame to the vehicle body frame, welding work does not occur, so that the assembling property can be improved.

A tenth aspect of the present invention is a mixer vehicle provided with the above-mentioned fastening device, including a vehicle body frame, a mixer drum as a frame, and a support frame for rotatably supporting the mixer drum.

According to a tenth aspect of the present invention, it is possible to provide a mixer wheel provided with a fastening device in which the movement of the fastener to the support frame in the front-rear, left-right direction is restricted.

According to the present invention, it is possible to prevent the support frame from being displaced with respect to the vehicle body frame.

It is a top view of the mixer wheel which concerns on 1st Embodiment of this invention. It is a side view of the mixer car which concerns on 1st Embodiment of this invention. It is a plan view of a vehicle body frame and a support frame, and shows the mounting position of a fastening device. It is a perspective view of the fastening device which concerns on 1st Embodiment of this invention. FIG. 5A is a schematic side view of the fastening device according to the first embodiment of the present invention, FIG. 5A shows a state before the upper pad is attached to the fixing portion, and FIG. 5B shows the upper pad attached to the fixing portion. Shows the state after mounting. It is a plan view of the fastening device which concerns on 1st Embodiment of this invention, and shows the positional relationship between a pair of left and right stud bolts and a fixing part. FIG. 7A is a schematic side view of the fastening device according to the modified example of the first embodiment of the present invention, FIG. 7A shows a state before the upper pad is attached to the fixing portion, and FIG. 7B shows the upper pad. Shows the state after being attached to the fixed part. It is a perspective view of the fastening device which concerns on 2nd Embodiment of this invention. FIG. 9A is a schematic side view of the fastening device according to the modified example of the second embodiment of the present invention, FIG. 9A shows a state before the upper pad is attached to the fixing portion, and FIG. 9B shows the upper pad. Shows the state after being attached to the fixed part. FIG. 9 (c) shows a state after the upper pad is attached to the fixed portion at a position different from the position of FIG. 9 (b). It is a perspective view of the fastening device which concerns on 3rd Embodiment of this invention. It is a perspective view of the fastening device which concerns on the modification of 3rd Embodiment of this invention. It is a perspective view of the fastening device which concerns on 4th Embodiment of this invention. It is a plane schematic diagram of the fastening device which concerns on 5th Embodiment of this invention.

Hereinafter, a vehicle provided with a fastening device according to an embodiment of the present invention will be described with reference to the drawings.

In the following, a mixer vehicle based on a truck will be described. The mixer car 100 includes a mixer drum (hereinafter referred to as “drum”) 103 rotatably mounted on the vehicle body and a so-called ready-mixed concrete (hereinafter referred to as “ready-mixed concrete”) such as mortar and ready-mixed concrete. Load and transport as. For convenience of explanation, the front-back, left-right, and up-down directions of the mixer wheel 100 are defined as shown.

As shown in FIGS. 1 and 2, the mixer vehicle 100 (hereinafter, also referred to as “vehicle”) includes a self-propellable vehicle body, a cabin 9 provided at the front portion of a vehicle body frame 8 constituting the vehicle body, and a cabin 9. A drum device 102 provided at the rear of the vehicle body frame 8 is provided.

The drum device 102 includes a support frame 6 fixed to the vehicle body frame 8 and extending in the front-rear direction of the vehicle, a drum 103 rotatably supported by the support frame 6, and a drive device 140 for rotationally driving the drum 103. Be prepared. Note that in FIG. 2, a part of the configuration of the drive device 140 is not shown.

The drive device 140 includes an engine 141 as a drive source, a variable displacement hydraulic pump 142 that is rotated by the power of the engine 141 and discharges hydraulic oil, and a variable displacement type that is rotated by hydraulic oil discharged from the hydraulic pump 142. The hydraulic motor 143 and the speed reducer 144 that decelerates the rotation of the hydraulic motor 143 and transmits the rotation to the drum 103.

The drum device 102 is arranged on the vehicle body frame 8 so that the rotation axis C1 of the drum 103 is aligned with the front-rear direction of the mixer wheel 100. The drum 103 is a cylindrical container having a rear end formed as an open end.

As shown in FIG. 2, an annular roller ring 103b is provided on the outer periphery of the rear portion of the drum 103. The front portion of the drum 103 is supported from below by the front support portion 61 of the support frame 6 via the speed reducer 144. The rear portion of the drum 103 is supported from below by the rear support portion 62 of the support frame 6 via the roller ring 103b.

The drum 103 is supported by the support frame 6 in a front-down posture in which the rear side is lifted from the front side so that the rotation axis C1 gradually rises toward the rear side of the mixer wheel 100.

The drive shaft of the drum 103 is connected to the hydraulic motor 143 via the speed reducer 144. The drum 103 is rotated forward or backward by the hydraulic motor 143 of the drive device 140.

Inside the drum 103, drum blades (not shown) are spirally arranged along the inner peripheral surface of the drum 103. When the drum 103 rotates in the forward direction, the drum blade (not shown) moves the ready-mixed concrete in the drum 103 forward while stirring. By stirring the ready-mixed concrete, the ready-mixed concrete is maintained to be uniformly mixed.

When the ready-mixed concrete is put into the drum 103 by using the hopper 104 provided in the upper rear part of the mixer wheel 100, the ready-mixed concrete is rotated forward at a higher speed than during stirring, and the put-in ready-mixed concrete is quickly drummed. Move to the front of 103.

When the drum 103 rotates in the reverse direction, the drum blade (not shown) moves the ready-mixed concrete backward while stirring. By rotating the drum 103 in the reverse direction, the ready-mixed concrete can be discharged from the open end of the drum 103. The ready-mixed concrete discharged from the drum 103 is guided to a predetermined position through a chute 106 rotatably provided in the lower rear portion of the mixer wheel 100.

As shown in FIG. 3, the vehicle body frame 8 has a pair of side rails 181 extending in the front-rear direction of the vehicle and a plurality of cross members 182 extending in the left-right direction of the vehicle and connecting the pair of side rails 181. The vehicle body frame 8 supports an axle (not shown) with wheels attached to both ends via a suspension or the like (not shown).

The support frame 6 has a pair of side rails 161 extending in the front-rear direction of the vehicle and a cross member 162 extending in the left-right direction of the vehicle and connecting the pair of side rails 161. As described above, the support frame 6 has a front support portion 61 and a rear support portion 62, and rotatably supports the drum 103, which is a frame (see FIG. 2).

As shown in FIG. 2, the support frame 6 is placed on the vehicle body frame 8. A spacer 7 formed by laminating strip-shaped plates is provided between the side rail 181 of the vehicle body frame 8 and the side rail 161 of the support frame 6.

The side rail 181 of the vehicle body frame 8 is formed of a channel material having a U-shaped cross section, and the side rail 161 of the support frame 6 is formed of a square tubular material having a rectangular frame shape.

The support frame 6, the spacer 7, and the vehicle body frame 8 are integrally fastened by a plurality of fastening devices 110. As shown in FIG. 3, the mixer wheel 100 according to the present embodiment is provided with a total of six fastening devices 110, three on each of the left and right sides. Each fastening device 110 has the same configuration.

As shown in FIG. 4, the fastening device 110 presses the fixing portion 120 fixed to the support frame 6 and the vehicle body frame 8 from below and presses the support frame 6 from above to press the vehicle body frame 8 and the support frame. A fastener 130 for fastening the 6 is provided.

The fastener 130 is a pair by changing the distance between the pair of holding pads 132 that support the side rails 181 of the vehicle body frame 8 and the side rails 161 of the support frame 6 from above and below, and the pair of holding pads 132. It is provided with an adjusting unit 134 for adjusting the pressing force on the vehicle body frame 8 and the support frame 6 by the holding pad 132 of the above. Hereinafter, among the pair of holding pads 132, the holding pad 132 on the support frame 6 side is referred to as an upper pad 132U, and the holding pad 132 on the vehicle body frame 8 side is referred to as a lower pad 132L.

The adjusting unit 134 has a pair of left and right stud bolts 131 having female threads formed at the upper and lower ends, and a plurality of nuts 133 having male threads screwed into the female threads of the stud bolt 131. The pair of left and right stud bolts 131 are arranged on the left and right sides of the side rails 181, 161 so as to sandwich the side rails 181, 161 of the vehicle body frame 8 and the support frame 6.

The upper end of the stud bolt 131 is inserted into the through hole of the upper pad 132U, and the nut 133 is screwed into the through hole. The lower end of the stud bolt 131 is inserted into the through hole of the lower pad 132L, and the nut 133 is screwed into the through hole. Therefore, by adjusting the tightening amount of the nut 133, the distance between the pair of holding pads 132 can be adjusted. That is, by adjusting the tightening amount of the nut 133 with the vehicle body frame 8 and the support frame 6 sandwiched between the pair of holding pads 132, the holding force (pushing pressure on the frame) by the pair of holding pads 132 is adjusted. Can be done.

The fixing portion 120 is engageable with the fastener 130 and has a flat plate 121 and a pair of cylinders 122. The flat plate 121 has a rectangular flat plate shape, and the cylinder 122 has a cylindrical shape. The pair of cylinders 122 are fixed to the front and rear ends of the flat plate 121 by welding. The flat plate 121 is placed on the upper surface 6a of the side rail 161 of the support frame 6 and fixed to the support frame 6 by welding.

As shown in FIG. 5A, the fixed portion 120 is formed with a recess 129 having an open left and right side portions and an upper portion by a flat plate 121 and a pair of cylinders 122. The upper surface of the flat plate 121 forms the bottom surface of the recess 129, and the opposing inner circumferential surfaces of the pair of cylinders 122 form the side surface of the recess 129.

The inner dimension Wi of the recess 129, that is, the shortest distance between the pair of cylinders 122 is set to a dimension equal to or slightly larger than the longitudinal dimension Wp of the upper pad 132U (dimensions are taken into consideration).

As shown in FIG. 5B, the upper pad 132U is fitted into the recess 129 formed in the fixing portion 120. That is, the lower end portion of the upper pad 132U functions as a fitting portion to be fitted into the recess 129 of the fixing portion 120. The fastener 130 is restricted from moving forward with respect to the support frame 6 by the contact between the cylinder 122 constituting the front side portion of the recess 129 of the fixing portion 120 and the front end surface of the upper pad 132U. The fastener 130 is restricted from moving backward with respect to the support frame 6 by the contact between the cylinder 122 constituting the rear side portion of the recess 129 and the rear end surface of the upper pad 132U.

In this way, the fastener 130 is restricted from moving in the front-rear direction with respect to the support frame 6 by engaging the recess 129 of the fixing portion 120 with the upper pad 132U. In other words, the movement of the support frame 6 with respect to the fastener 130 in the front-rear direction is restricted. That is, the fastener 130 restricts the movement of the support frame 6 with respect to the vehicle body frame 8 in the front-rear direction.

With a simple configuration in which the recess 129 is provided in the fixing portion 120 and the upper pad 132U is fitted into the recess 129, the movement of the fastener 130 with respect to the support frame 6 in the front-rear direction can be restricted. Since the recess is not formed in the support frame 6 itself and the recess 129 is formed in the fixing portion 120 which is a member separate from the support frame 6, the strength of the support frame 6 does not decrease.

As shown in FIG. 6, the bolt-to-bolt dimension Wb, which is the shortest distance between the pair of left and right stud bolts 131, is the same as or slightly larger than the left-right width dimension Wf of the flat plate 121 of the fixing portion 120 (dimensions are taken into consideration). Is set to.

The pair of left and right stud bolts 131 are arranged on the left and right of the flat plate 121 of the fixing portion 120. In other words, the flat plate 121 of the fixing portion 120 is arranged between the pair of left and right stud bolts 131. The fastener 130 is restricted from moving to the left with respect to the support frame 6 by the contact between the right end surface 121R of the flat plate 121 and the stud bolt 131 on the right side. The fastener 130 is restricted from moving to the right with respect to the support frame 6 by the contact between the left end surface 121L of the flat plate 121 and the left stud bolt 131.

In this way, the fastener 130 is restricted from moving in the left-right direction with respect to the support frame 6 by engaging the left-right end portions of the flat plate 121 with the pair of left-right stud bolts 131. In other words, the movement of the support frame 6 with respect to the fastener 130 in the left-right direction is restricted. That is, the fastener 130 restricts the movement of the support frame 6 with respect to the vehicle body frame 8 in the left-right direction.

With a simple configuration in which a pair of left and right stud bolts 131 are engaged with the left and right ends of the flat plate 121 of the fixing portion 120, the movement of the fastener 130 with respect to the support frame 6 in the left-right direction can be restricted.

The support frame 6 is a welded structure in which a cross member 162 is welded to a side rail 161. Therefore, in the process of manufacturing the support frame 6, the fixing portion 120 can be welded to the support frame 6. Therefore, welding work does not occur in the process of assembling the support frame 6 to the vehicle body frame 8.

The support frame 6 is preliminarily attached with a hydraulic device, a fuel device, electrical components, and the like before the process of assembling to the vehicle body frame 8. Therefore, if welding work is performed when assembling the support frame 6 to the vehicle body frame 8, the welding spatter generated during the welding work is arranged around the hydraulic equipment (pump, hose, valve, etc.), fuel device (fuel tank, etc.). It may adhere to fuel hoses, etc.) and electrical components (controllers, cables, etc.). Therefore, when the welding work is performed in the assembly process, it is necessary to sufficiently cure the peripheral equipment, which makes the work complicated.

On the other hand, in the present embodiment, as described above, when assembling the support frame 6 to the vehicle body frame 8, welding work is not required. Therefore, there is no possibility that quality defects due to the adhesion of welding spatter will occur, and curing is not required. That is, according to the present embodiment, it is possible to improve the workability of assembling the support frame 6 with respect to the vehicle body frame 8, and to provide a high-quality mixer vehicle 100.

Further, since the fixing portion 120 is welded to the support frame 6 in advance, the operator can easily position the fastener 130 in the step of assembling the support frame 6 to the vehicle body frame 8.

According to the first embodiment described above, the following effects are obtained.

(1) By engaging the fastener 130 with the fixing portion 120, the movement of the fastener 130 with respect to the support frame 6 in the front-rear and left-right directions is restricted. In other words, the movement of the support frame 6 with respect to the fastener 130 in the front-back and left-right directions is restricted. That is, according to the present embodiment, the fastening device 110 capable of preventing the position shift of the support frame 6 with respect to the vehicle body frame 8 due to the impact caused by the start and stop of the vehicle, the vibration during the running of the vehicle, and the like, and the mixer provided with the fastening device 110. A car 100 can be provided.

<Modified example of the first embodiment>
In the first embodiment described above, an example in which one recess 129 is provided in the fixing portion 120 has been described, but the present invention is not limited thereto. The fixing portion 120 may be provided with a plurality of concave portions, and the upper pad 132U may be provided with a plurality of convex portions. For example, the first embodiment may be modified as follows.

In this modification, instead of attaching the pair of cylinders 122 to the flat plate 121, the uneven portion 229 is formed on the flat plate 221 of the fixing portion 220 as shown in FIGS. 7 (a) and 7 (b). The uneven portion 229 is formed in a wavy shape in which mountain portions (convex portions) 229a and valley portions (concave portions) 229b are alternately arranged.

The upper pad 232U has an engaging plate 238 fixed to a rectangular parallelepiped member. The engaging plate 238 is formed with an uneven portion 239 that engages with the uneven portion 229 of the fixing portion 220. The uneven portion 239 is formed in a wavy shape in which mountain portions (convex portions) 239a and valley portions (concave portions) 239b are alternately arranged. According to such a modification, by fitting the plurality of concave portions (229b, 239b) and the convex portions (229a, 239a), the fastener 230 and the support frame 6 are relative to each other as in the first embodiment. Movement in the front-back direction is restricted.

<Second Embodiment>
The fastening device 310 according to the second embodiment of the present invention will be described with reference to FIG. Hereinafter, the points different from those of the first embodiment will be mainly described, and in the drawings, the same configurations as those described in the first embodiment or the corresponding configurations are designated by the same reference numerals and the description thereof will be omitted. ..

In the first embodiment, an example in which one recess 129 is provided for one fixing portion 120 has been described. On the other hand, in the second embodiment, a plurality of recesses 329 are provided for one fixing portion 320.

In the first embodiment, the fixing portion 120 is previously welded to the support frame 6 in the stage prior to the work of assembling the support frame 6 to the vehicle body frame 8. Therefore, the stud bolt 131 is positioned at a predetermined position by the fixing portion 120. However, in the mixer vehicle 100, the shape of the vehicle body frame 8 may differ depending on the specifications.

In the first embodiment, if there is an obstacle (for example, a bolt, a rib, etc.) that interferes with the stud bolt 131 at the position where the stud bolt 131 is arranged, it becomes necessary to change the position of the fixing portion 120. In this case, the fixing portion 120 must be removed from the support frame 6 and the fixing portion 120 must be rewelded at a position where the stud bolt 131 can be arranged while avoiding obstacles.

In the fastening device 310 of the second embodiment, in order to solve the above problems, a plurality of recesses 329 that can be engaged with the fastener 130 are provided side by side in the fixing portion 320 in the front-rear direction.

The fastener 130 is restricted from moving in the front-rear direction with respect to the support frame 6 by engaging the upper pad 132U with one of the plurality of recesses 329 (329a, 329b, 329c, 329d).

In the second embodiment, five cylinders 122 are welded to one rectangular flat plate 321 at equal intervals in the front-rear direction. Each cylinder 122 is arranged so as to extend in the left-right direction. A recess 329 is formed by the adjacent cylinder 122 and the flat plate 321.

An obstacle 390 is provided on the vehicle body frame 8, and when the upper pad 132U is fitted into the recess 329d, the stud bolt 131 and the obstacle 390 interfere with each other. Therefore, by fitting the upper pad 132U into the recess 329a, it is possible to avoid interference between the stud bolt 131 and the obstacle 390.

According to such a second embodiment, in addition to the action and effect of the first embodiment, the following action and effect are exhibited.

(2) The engagement position of the fastener 130 with respect to the fixing portion 320 can be easily adjusted, and it is possible to prevent the fixing portion 320 from being removed and rewelded. That is, according to the second embodiment, it is possible to provide a highly versatile fastening device 310 that can be adapted to the vehicle body frame 8 having various specifications.

<Modified example of the second embodiment>
In the second embodiment, the lower portion of the upper pad 132U is engaged with one of the plurality of recesses 329 to restrict the movement of the fastener 130 with respect to the support frame 6 in the front-rear direction. As described above, the present invention is not limited to this. The fastener 130 may be engaged with at least one of the plurality of recesses 329. For example, the second embodiment may be modified as follows.

In this modification, instead of attaching the plurality of cylinders 122 to the flat plate 321, the uneven portion 429 is formed on the flat plate 421 of the fixed portion 420 as shown in FIG. 9A. In the uneven portion 429, the mountain portion (convex portion) 429a and the valley portion (concave portion) 429b are alternately arranged.

The upper pad 432U has an engaging plate 438 fixed to a rectangular parallelepiped member. The engaging plate 438 is formed with an uneven portion 439 that engages with the uneven portion 429 of the fixing portion 420. In the uneven portion 439, the mountain portion (convex portion) 439a and the valley portion (concave portion) 439b are alternately arranged.

The fixed portion 420 is formed with five valley portions 429b, whereas the engaging plate 438 is formed with three mountain portions 439a that can be engaged with the valley portion 429b. According to such a modification, as shown in FIGS. 9 (b) and 9 (c), three valley portions 429b and three mountain portions 439a out of the five valley portions 429b are fitted to each other. By doing so, the relative movement of the fastener 430 and the support frame 6 in the front-rear direction is restricted as in the second embodiment.

<Third Embodiment>
The fastening device 510 according to the third embodiment of the present invention will be described with reference to FIG. 10. Hereinafter, the points different from those of the second embodiment will be mainly described, and in the drawings, the same configurations as those described in the second embodiment or the corresponding configurations are designated by the same reference numerals and the description thereof will be omitted. .. In the third embodiment, the cylinder 122 described in the second embodiment is not provided, and the flat plate 521 constitutes the fixing portion 520.

In the second embodiment, the left and right ends of the flat plate 321 of the fixing portion 320 and the pair of left and right stud bolts 131 are in contact with each other, thereby restricting the movement of the fastener 130 with respect to the support frame 6 in the left-right direction. On the other hand, in the third embodiment, the left and right ends of the flat plate 521 do not come into contact with the pair of left and right stud bolts 131.

In the third embodiment, a plurality of left and right pair of through holes 529 are provided in the flat plate 521 at equal intervals in the front-rear direction. The through hole 529 is a circular through hole that penetrates in the vertical direction.

The upper pad 532U is provided with a pair of left and right round bars 539 projecting downward. The round bar 539 is formed in a columnar shape having the same diameter as or slightly smaller than the diameter of the through hole 529 (dimensions are taken into consideration). The pair of left and right round bars 539 are fitted into the pair of left and right through holes 529.

As a result, the rotational movement of the upper pad 532U centered on the left round bar 539 is restricted by the right round bar 539, and the rotational movement of the upper pad 532U centered on the right round bar 539 is restricted by the left round bar 539. Be regulated. That is, by engaging the pair of left and right round bars 539 with the pair of left and right through holes 529, the movement of the fastener 530 with respect to the support frame 6 in the front-back and left-right directions is restricted.

According to such a third embodiment, in addition to the action and effect of the second embodiment, the following action and effect are exhibited.

(3) Since the stud bolt 131 and the flat plate 521 do not come into contact with each other, it is possible to prevent the stud bolt 131 from being worn.

<Modified example of the third embodiment>
In the third embodiment, an example in which a pair of left and right round bars 539 are fitted into a pair of left and right circular through holes 529 has been described, but the present invention is not limited thereto. As shown in FIG. 11, a plurality of rectangular through holes 629 may be provided in the flat plate 621 constituting the fixing portion 620. The plurality of through holes 629 are provided at equal intervals in the front-rear direction.

The upper pad 632U is provided with a rectangular protrusion 639 that fits into the through hole 629. The front / rear / left / right outer side surfaces of the protrusion 639 come into contact with the front / rear / left / right inner side surfaces of the through hole 629, whereby the movement of the fastener 630 with respect to the support frame 6 in the front / rear / left / right direction is restricted. By shortening the dimensions of the through holes 629 and the protrusion 639 in the front-rear direction, the dimensions (pitch) between the through holes 629 can be reduced. By reducing the pitch, the mounting position of the fastening device 610 can be finely adjusted.

<Fourth Embodiment>
The fastening device 710 according to the fourth embodiment of the present invention will be described with reference to FIG. Hereinafter, the points different from those of the second embodiment will be mainly described, and in the drawings, the same configurations as those described in the second embodiment or the corresponding configurations are designated by the same reference numerals and the description thereof will be omitted. ..

In the second embodiment, an example in which the adjusting unit 134 includes a pair of left and right stud bolts 131 has been described. On the other hand, in the fourth embodiment, the adjusting unit 734 of the fastener 730 includes a single U-bolt 731.

The adjusting unit 734 has a single U-bolt 731 with female threads formed at both ends and a plurality of nuts 133 formed with male threads screwed into the female threads of the U-bolt 731. The U-bolt 731 has a pair of shaft portions 731a and a connecting portion 731b that connects the pair of shaft portions 731a to each other.

The fastener 730 supports the support frame 6 and the vehicle body frame 8 by sandwiching them from above and below between the connecting portion 731b on the support frame 6 side and the lower pad 132L on the vehicle body frame 8 side. The pair of left and right shaft portions 731a are arranged on the left and right sides of the side rails 181 and 161 so as to sandwich the side rails 181 and 161 of the vehicle body frame 8 and the support frame 6.

Both ends of the U bolt 731 are inserted into the through holes of the lower pad 132L, and the nut 133 is screwed. By adjusting the tightening amount of the nut 133 while the vehicle body frame 8 and the support frame 6 are sandwiched between the connecting portion 731b and the lower pad 132L, the holding force by the pair of holding portions (connecting portion 731b and the lower pad 132L). (Pressing pressure on the frame) can be adjusted.

The flat plate 721 constituting the fixed portion 720 is provided with a plurality of grooves 729 arranged side by side in the front-rear direction. The groove 729 is a recess that is recessed downward, extends to the left and right, and the left and right ends are open. The cross-sectional shape of the groove 729 is a semicircular shape corresponding to the lower part of the connecting portion 731b.

The connecting portion 731b is fitted into and positioned in one of the plurality of grooves 729. According to such a fourth embodiment, the same action and effect as those of the second embodiment are obtained.

<Fifth Embodiment>
The fastening device 810 according to the fifth embodiment of the present invention will be described with reference to FIG. 13. Hereinafter, the points different from those of the fourth embodiment will be mainly described, and in the drawings, the same configurations as those described in the fourth embodiment or the corresponding configurations are designated by the same reference numerals and the description thereof will be omitted. ..

In the fourth embodiment, the flat plate 721 constituting the fixing portion 720 is fixed to the support frame 6 in a state of being placed on the upper surface 6a of the side rail 161. On the other hand, in the fifth embodiment, instead of the fixing portion 720, a pair of left and right fixing portions 820 are welded to the support frame 6 in a state of being in contact with the left and right side surfaces 6b of the side rail 161.

The fixing portion 820 is composed of a rectangular flat plate 821. The flat plate 821 is provided with a plurality of grooves 829 extending in the vertical direction side by side in the front-rear direction.

A pair of left and right shaft portions 731a are fitted into the pair of left and right grooves 829. That is, the inner portion (the portion facing the flat plate 821) of the pair of left and right shaft portions 731a functions as an fitting portion to be fitted into the groove 829 as a recess of the fixing portion 820.

The pair of shaft portions 731a are fitted into one of a pair of left and right grooves 829 arranged in the front-rear direction and positioned. In the present embodiment, the pair of left and right shaft portions 731a engages with the pair of left and right grooves 829, thereby restricting the movement of the fastener 830 with respect to the support frame 6 in the front-back and left-right directions.

According to the fifth embodiment as described above, the same effect as that of the fourth embodiment is obtained.

The following modifications are also within the scope of the present invention, and the configurations shown in the modifications may be combined with the configurations described in the above-described embodiments, or the configurations described in the above-mentioned different embodiments may be combined, and the following differences may occur. It is also possible to combine the configurations described in the modified example.

(Modification 1)
In the above embodiment, the fixed portion 120, 220, 320, 420, 520, 620, 720, 820 has been described as an example of being welded to the support frame 6, but the present invention is not limited thereto. For example, the fixing portions 120, 220, 320, 420, 520, 620, 720, 820 may be fixed to the support frame 6 with bolts, nuts, or the like.

(Modification 2)
In the above embodiment, the mixer wheel 100 in which the drum 103, which is a frame, is supported on the support frame 6 has been described as an example, but the present invention is not limited thereto. For example, a freezer truck equipped with a freezer, which is a framed object, a transport vehicle such as a tank truck equipped with a tank, a cleaning vehicle equipped with a cleaning device, which is a framed object, and a construction machine such as a crane are provided as a framed object. The present invention can be applied to various mounted vehicles such as truck cranes. In the mixer car 100, the drum 103 rotates and the ready-mixed concrete moves in the drum 103, so that the support frame 6 is easily twisted and displaced with respect to the vehicle body frame 8. Therefore, when the present invention is applied to the mixer vehicle 100 as in the above embodiment, a large effect can be expected as compared with the case where the present invention is applied to other vehicles, which is preferable.

(Modification 3)
The uneven relationship between the fixing portions 120, 220, 320, 420, 520, 620, 720, 820 and the fasteners 130, 230, 430, 530, 630, 730, 830 may be reversed. For example, in the third embodiment, a circular recess is formed in place of the round bar 539 of the upper pad 532U, a round bar projecting upward is formed in place of the through hole 529 of the flat plate 521, and the round bar is fitted in the circular recess. You may combine them.

(Modification example 4)
In the above embodiment, the fixing portions 120, 220, 320, 420, 520, 620, 720, 820 and the concave portions / convex portions and the convex portions / concave portions of the fasteners 130, 230, 430, 530, 630, 730, 830 are provided. An example has been described in which the fasteners 130, 230, 430, 530, 630, 730, 830 are restricted from moving in the front-rear and left-right directions by engaging with the support frame 6, but the present invention is not limited thereto. .. Friction plates may be fixed to each of the fixing portion and the fastener, and the friction plates may be engaged with each other to restrict the movement of the fastener in the front-back and left-right directions with respect to the support frame 6.

(Modification 5)
In the above embodiment, an example in which the present invention is applied to all the fastening points (six places in total) of the vehicle body frame 8 and the support frame 6 has been described, but the present invention is not limited thereto. The present invention may be applied only to a part of a plurality of fastening points (for example, a total of four points on the left and right front sides).

(Modification 6)
Instead of the pair of left and right stud bolts 131 in the first to third embodiments, a single U bolt 731 may be provided, and the connecting portion 731b of the U bolt 731 may be arranged on the vehicle body frame 8 side.

Hereinafter, the configurations, actions, and effects of the embodiments of the present invention will be collectively described.

The fastening device 110, 310, 510, 610, 710, 810 is a fastening device 110 that fastens the vehicle body frame 8 extending in the front-rear direction of the vehicle and the support frame 6 mounted on the vehicle body frame 8 and supporting the drum 103. , 310, 510, 610, 710, 810 with a pair of holding portions (a pair of holding pads 132, a connecting portion 731b and a lower pad 132L) that sandwich and support the vehicle body frame 8 and the support frame 6 from above and below. Fasteners 130, 230, comprising adjusting units 134, 734 for adjusting the pressing force on the vehicle body frame 8 and the support frame 6 by the pair of pinching portions (pairing pinching pads 132, connecting portion 731b and lower pad 132L). 430, 530, 630, 730, 830 and fixing portions 120, 220, 320, 420, 520, fixed to the support frame 6 and engageable with fasteners 130, 230, 430, 530, 630, 730, 830, The fasteners 130, 230, 430, 530, 630, 730, 830 are provided with 620, 720, 820, and the fasteners 130, 230, 430, 530, 630, 730, 830 are provided by engaging with the fixing portions 120, 220, 320, 420, 520, 620, 720, 820. , Movement in the front-back and left-right directions with respect to the support frame 6 is restricted.

In this configuration, the fasteners 130, 230, 430, 530, 630, 730, 830 are engaged with the fixing portions 120, 220, 320, 420, 520, 620, 720, 820 to engage the fasteners to the support frame 6. The movement of 130, 230, 430, 530, 630, 730, 830 in the front-back and left-right directions is restricted. In other words, the movement of the support frame 6 in the front-back and left-right directions with respect to the fasteners 130, 230, 430, 530, 630, 730, and 830 is restricted. Therefore, it is possible to prevent the support frame 6 from being displaced with respect to the vehicle body frame 8 fastened by the fastening devices 110, 310, 510, 610, 710, and 810.

The fastening device 310, 510, 610, 710, 810 has an engaging portion that can be engaged with the fastener 130, 430, 530, 630, 730, 830 on the fixing portion 320, 420, 520, 620, 720, 820. (Recessed portion 329, valley portion 429b, through hole 529, through hole 629, groove 729, groove 829) are provided side by side in the front-rear direction, and the fasteners 130, 430, 530, 630, 730, 830 are provided with a plurality of engagements. Holding portions (upper pads 132U, 432U, 532U, 632U, connected to at least one of the joint portions (recessed portion 329, valley portion 429b, through hole 529, through hole 629, groove 729, groove 829)) on the support frame 6 side. By engaging the portions 731b), the movement in the front-rear direction with respect to the support frame 6 is restricted.

In this configuration, the engagement positions of the fasteners 130, 430, 530, 630, 730, 830 with respect to the fixing portions 320, 420, 520, 620, 720, 820 can be adjusted.

The fastening devices 110, 310, 510, 610, 710 have fitting portions (lower portions of the upper pad 132U) in the holding portions (upper pads 132U, 232U, 432U, 532U, 632U, connecting portions 731b) on the support frame 6 side. , Mountain portion 239a, mountain portion 439a, round bar 539, projecting portion 639, lower portion of connecting portion 731b) are provided, and the fixing portions 120, 220, 320, 420, 520, 620, 720 are provided with fitting portions (fitting portions ( Recesses (recess 129, valley 229b, recess 329, valley 429b) into which the lower portion of the upper pad 132U, the ridge 239a, the ridge 439a, the round bar 539, the protrusion 639, and the lower portion of the connecting portion 731b) are fitted. , Through hole 529, through hole 629, groove 729), and the fasteners 130, 230, 430, 530, 630, 730 have fitting portions (lower portion of the upper pad 132U, mountain portion 239a, mountain portion 439a, The round bar 539, the protruding portion 639, the lower portion of the connecting portion 731b) and the recesses (recessed portion 129, valley portion 229b, recessed portion 329, valley portion 429b, through hole 529, through hole 629, groove 729) are engaged. As a result, movement in the front-rear direction with respect to the support frame 6 is restricted.

In the fastening devices 110, 310, 710, 810, the adjusting units 134, 734 have a pair of left and right shaft portions (stud bolts 131, shaft portions 731a) arranged on the left and right sides of the vehicle body frame 8 and the support frame 6, and are fastened. The tool 130, 230, 430, 730, 830 is a support frame in which the fixing portion 120, 220, 320, 420, 720, 820 and the pair of left and right shaft portions (stud bolt 131, shaft portion 731a) are engaged with each other. Movement in the left-right direction with respect to 6 is restricted.

In the fastening devices 510 and 610, the fasteners 530 and 630 engage with the fitting portion (round bar 539, protruding portion 639) and the recess (through hole 529, through hole 629) in the left-right direction with respect to the support frame 6. Movement to is restricted.

In the fastening device 110, the fixing portions 220 and 420 are formed with uneven portions 229 and 429 in which mountain portions 229a and 429a and valley portions 229b and 429b are alternately provided, and the concave and convex portions 229 and 429 are used as fasteners 230. Engage in 430.

In these configurations, the movement of the fasteners 130, 230, 430, 530, 630, 730, 830 with respect to the support frame 6 can be restricted with a simple configuration.

In the fastening device 110, 310, 510, 610, 710, 810, the fixing portions 120, 220, 320, 420, 520, 620, 720, 820 are welded to the support frame 6.

In this configuration, when the support frame 6 is a welded structure, the fixing portions 120, 220, 320, 420, 520, 620, 720, 820 are welded to the support frame 6 in the process of manufacturing the support frame 6. Can be done. Therefore, in the process of assembling the support frame 6 to the vehicle body frame 8, welding work does not occur, so that the assembling property can be improved.

The mixer wheel 100 includes fastening devices 110, 310, 510, 610, 710, 810, a vehicle body frame 8, a drum 103 as a frame, and a support frame 6 that rotatably supports the drum 103.

In this configuration, the fasteners 130, 230, 430, 530, 630, 730, 830 with respect to the support frame 6 are provided with fasteners 110, 310, 510, 610, 710, 810 in which the movement in the front-back and left-right directions is restricted. The mixer car 100 can be provided.

Although the embodiments of the present invention have been described above, the above embodiments are only a part of the application examples of the present invention, and the technical scope of the present invention is limited to the specific configuration of the above embodiments. No.

6 ... Support frame, 8 ... Body frame, 100 ... Mixer car, 103 ... Mixer drum (framework), 110, 310, 510, 610, 710, 810 ... Fastening device, 120 , 220, 320, 420, 520, 620, 720, 820 ... Fixed part, 129, 329 ... Recessed part, 229b, 429b ... Valley part (recessed part), 529, 629 ... Through hole (recessed part) ), 729, 829 ... Groove (recess), 130, 230, 430, 530, 630, 730, 830 ... Fastener, 131 ... Stud bolt (shaft), 731a ... Shaft, 132 ... Holding pad (holding part), 731b ... Connecting part (holding part), 134,734 ... Adjustment unit (adjusting part), 229,429 ... Concavo-convex part, 239a, 439a ... Mountain part (fitting part), 539 ... Round bar (fitting part), 639 ... Protruding part (fitting part)

Claims (10)

A fastening device for fastening a vehicle body frame extending in the front-rear direction of a vehicle and a support frame mounted on the vehicle body frame to support a frame.
A fastener having a pair of holding portions that sandwich and support the vehicle body frame and the supporting frame from above and below, and an adjusting portion that adjusts the pressing force on the vehicle body frame and the supporting frame by the pair of sandwiching portions.
A fixing portion fixed to the support frame and engageable with the fastener.
The fixing portion is provided with a flat plate portion and an engaging portion that can be engaged with the fastener.
A plurality of the engaging portions are provided side by side in the front-rear direction on the flat plate portion.
By engaging the fastener with the fixing portion, movement in the front-back and left-right directions with respect to the support frame is restricted, and at least one of the plurality of engaging portions has the holding portion on the support frame side. A fastening device characterized in that movement in the front-rear direction with respect to the support frame is restricted by the engagement of the members. A fastening device for fastening a vehicle body frame extending in the front-rear direction of a vehicle and a support frame mounted on the vehicle body frame to support a frame.
A fastener having a pair of holding portions that sandwich and support the vehicle body frame and the supporting frame from above and below, and an adjusting portion that adjusts the pressing force on the vehicle body frame and the supporting frame by the pair of sandwiching portions.
A fixing portion fixed to the support frame and engageable with the fastener.
The adjusting portion has a pair of left and right shaft portions arranged on the left and right sides of the vehicle body frame and the support frame.
A plurality of engaging portions that can be engaged with the fastener are provided side by side in the front-rear direction on the fixing portion.
By engaging the holding portion on the support frame side with at least one of the plurality of engaging portions, the fastener is restricted from moving in the front-rear direction with respect to the support frame, and is restricted from moving in the front-rear direction with the fixing portion. A fastening device characterized in that movement in the left-right direction with respect to the support frame is restricted by engaging the pair of left and right shaft portions. In the fastening device according to claim 1 or 2.
A fitting portion is provided in the sandwiching portion on the support frame side.
The fixing portion is provided with a recess into which the fitting portion is fitted.
The fastener is a fastening device characterized in that movement in the front-rear direction with respect to the support frame is restricted by engaging the fitting portion with the recess. A fastening device for fastening a vehicle body frame extending in the front-rear direction of a vehicle and a support frame mounted on the vehicle body frame to support a frame.
A fastener having a pair of holding portions that sandwich and support the vehicle body frame and the supporting frame from above and below, and an adjusting portion that adjusts the pressing force on the vehicle body frame and the supporting frame by the pair of sandwiching portions.
A fixing portion fixed to the support frame and engageable with the fastener.
The adjusting portion has a pair of left and right shaft portions arranged on the left and right sides of the vehicle body frame and the support frame.
The fastener is restricted from moving in the left-right direction with respect to the support frame by engaging the fixing portion with the pair of left and right shaft portions, and the fixing portion and the holding portion engage with each other. , A fastening device characterized in that movement in the front-rear direction with respect to the support frame is restricted. A fastening device for fastening a vehicle body frame extending in the front-rear direction of a vehicle and a support frame mounted on the vehicle body frame to support a frame.
A fastener having a pair of holding portions that sandwich and support the vehicle body frame and the supporting frame from above and below, and an adjusting portion that adjusts the pressing force on the vehicle body frame and the supporting frame by the pair of sandwiching portions.
A fixing portion fixed to the support frame and engageable with the fastener.
The adjusting portion has a pair of left and right shaft portions arranged on the left and right sides of the vehicle body frame and the support frame.
The fixing portion is provided on the upper surface of the support frame.
The fastener is restricted from moving in the front-back and left-right directions with respect to the support frame by engaging with the fixing portion, and the support frame is engaged with the fixing portion and the pair of left and right shaft portions. A fastening device characterized in that movement in the left-right direction is restricted. A fastening device for fastening a vehicle body frame extending in the front-rear direction of a vehicle and a support frame mounted on the vehicle body frame to support a frame.
A fastener having a pair of holding portions that sandwich and support the vehicle body frame and the supporting frame from above and below, and an adjusting portion that adjusts the pressing force on the vehicle body frame and the supporting frame by the pair of sandwiching portions.
A fixing portion fixed to the support frame and engageable with the fastener.
The adjusting portion has a pair of left and right shaft portions arranged on the left and right sides of the vehicle body frame and the support frame.
The pair of holding portions are formed separately from the pair of left and right shaft portions.
The fastener is restricted from moving in the front-back and left-right directions with respect to the support frame by engaging with the fixing portion, and the support frame is engaged with the fixing portion and the pair of left and right shaft portions. A fastening device characterized in that movement in the left-right direction is restricted. In the fastening device according to claim 3,
The fastener is a fastening device characterized in that movement in the left-right direction with respect to the support frame is restricted by engaging the fitting portion with the recess. A fastening device for fastening a vehicle body frame extending in the front-rear direction of a vehicle and a support frame mounted on the vehicle body frame to support a frame.
A fastener having a pair of holding portions that sandwich and support the vehicle body frame and the supporting frame from above and below, and an adjusting portion that adjusts the pressing force on the vehicle body frame and the supporting frame by the pair of sandwiching portions.
A fixing portion fixed to the support frame and engageable with the fastener.
The fixed portion is formed with uneven portions in which a plurality of peaks and a plurality of valleys are alternately provided.
The fastener is a fastening device characterized in that by engaging with the fixing portion, movement in the front-back and left-right directions with respect to the support frame is restricted, and the uneven portion engages with the fastener. In the fastening device according to any one of claims 1 to 8.
The fixing device is a fastening device characterized in that the fixing portion is welded to the support frame. The fastening device according to any one of claims 1 to 9, and the fastening device.
With the body frame
The mixer drum as the frame and
A mixer wheel comprising the support frame for rotatably supporting the mixer drum.

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