JP3620018B2 - Pin type coupling device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pin-type connecting device for detachably connecting two articles using an engaging pin and a pin hole in various industrial fields including a tubing device and a construction machine used for civil engineering and foundation work.
[0002]
[Prior art]
For example, in the case of a large-sized tubing device used for press-fitting while rotating a large-diameter pile in civil engineering foundation work, etc. Disassembly and assembly are performed each time, and a pin-type connecting device is used as the coupling means.
[0003]
The above-described tubing device is divided into a casing tube rotating device that is a lower article and a chuck device that is an upper article, and a pin-type connecting device is provided at the upper portion of the casing tube rotating device and the lower portion of the chuck device. When the casing tube rotating device and the chuck device are attached / detached, the casing tube rotating device installed on the grounding surface is attached to the pin. Then, while the upper chuck device is lifted by a crane, the engagement pins are inserted into and removed from both pin holes, thereby connecting and separating the two.
[0004]
[Problems to be solved by the invention]
Lifting of the chuck device using a crane and a wire rope is intended to make it easy to insert and remove the engagement pin so that the load load of the upper chuck device is not applied to the engagement pin when attaching to and detaching from the casing tube rotating device. Done.
[0005]
However, when the chuck device is separated from the casing tube rotating device, even if the lifting force of the chuck device by the crane is insufficient or excessively lifted, a load is applied to the engagement pin, making it difficult to pull out. When connecting the device to the casing tube rotating device, it is difficult to insert the engaging pin unless the pin holes of both devices are aligned accurately. In either case, the wire rope suspension is adjusted slightly. It was an annoying thing that had to be done.
[0006]
The present invention has been made in the background of such circumstances, and its purpose is to insert and remove the engagement pin without adjusting the delicate hanging condition of the wire rope when attaching or detaching two articles located above and below. It is an object of the present invention to provide a pin type coupling device that can be easily and safely attached and detached in a short time without the need for a delicate lifting condition using a lifting means and a wire rope.
[0007]
[Means for Solving the Problems]
To achieve the above object, according to the first aspect of the present invention, there is provided a pin type coupling device that detachably couples two articles positioned vertically using an engagement pin and a pin hole, the article located on the lower side. In the pin type coupling device, the pin holes are drilled in both the upper article suspended by the lifting means such as a crane and the like, and the engagement article is inserted into the pin holes to couple the two articles. A pin hole of the upper article is drilled in the connection bracket, and an adjustment bolt for supporting the connection bracket at the tip is screwed to a position below the pin hole of the lower article so as to be movable in the vertical direction. Yes.
[0008]
Further, in the second invention, at least the lower side of the outer peripheral surface of the connecting bracket of the first invention is formed in an arc shape, a plurality of adjusting bolts are formed, and these adjusting bolts are inclined toward the pin hole of the lower article. Yes.
[0009]
Furthermore, in the third aspect of the invention, there is provided a pin-type connecting device for detachably connecting two articles positioned above and below using an engaging pin and a pin hole, and the articles positioned below and a lifting means such as a crane. In the pin-type connecting device in which the pin holes are formed in both of the upper articles to be suspended and the engagement pins are inserted into the pin holes to connect the two articles, the pin holes of the upper articles are formed. A connecting bracket is formed so that an outer peripheral surface of the connecting bracket is formed in an arc shape, and a pair of aligning jigs are moved toward and away from each other below the pin hole of the lower article. A tapered receiving surface for supporting the outer peripheral surface of the connection bracket of the upper article is provided on the upper surface on the opposite side of both jigs.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments in which the pin type coupling device of the present invention is applied to a tubing device used for civil engineering foundation work and the like will be described below with reference to the drawings.
1 to 3 show a first embodiment of the present invention, FIG. 1 is a cross-sectional front view of an essential part showing a connected state of a casing tube rotating device and a chuck device, and FIG. 2 is a casing tube rotating device and a chuck device. FIG. 3 is a cross-sectional side view of the coupling state of the casing tube rotating device and the chuck device, and FIG. 4 is a sectional view of the casing tube rotating device and the chuck device according to the second embodiment of the present invention. FIG. 5 is a cross-sectional front view of a main part in a connected state of a casing tube rotating device and a chuck device showing a second embodiment of the present invention.
[0011]
1 to 3 includes a casing tube rotating device 2 corresponding to the lower article of the present invention and a chuck device 3 corresponding to the upper article of the present invention. The two devices 2 and 3 are detachably connected to each other using a pin type connecting device 4.
[0012]
The casing tube rotating device 2 is configured such that an elevating body 8 having a rotating frame 6 and an elevating frame 7 can be moved up and down using a plurality of elevating cylinders 9 on an upper portion of a base frame 5 having jack-type support legs 5a and 5a. It is supported. The elevating frame 7 is formed in a rectangular shape together with the above-described base frame 5 and a chuck frame 20 described later, and a drive motor 10 and a chuck device for rotating the rotating frame 6 are respectively provided at four corners of the elevating frame 7. 3 and an inner guide cylinder 11 for guiding the raising and lowering of 3.
[0013]
In the elevating frame 7, vertical joint plates 12 and 13 are arranged at four locations in the vicinity of the inner guide cylinder 11 with gaps C1 on the inside and outside, and pin holes 12a and 13a are formed in the joint plates 12 and 13, respectively. Are drilled on the same central axis L1. A guide sleeve 15 is fixed in the vertical direction between the receiving plate 14 that supports the lower surfaces of the joint plates 12 and 13 and the lower web 7 a of the elevating frame 7, and an adjustment bolt is provided inside the guide sleeve 15. 16 is screwed so as to be movable in the vertical direction.
[0014]
While the adjustment bolt 16 projects the tip 16b of the shaft portion 16a from the receiving plate 14 to the gap C1 between the joint plates 12 and 13, the center axis L2 passes through the intermediate portion of the gap C1 between the joint plates 12 and 13, And it is arrange | positioned in the position orthogonal to the central axis L1 of pin hole 12a, 13a. A lock nut 17 is screwed to the base end side of the shaft portion 16a, and the adjusting bolt 16 is fixed by pressing the nut 17 to the lower surface of the web 7a, whereby the tip end 16b of the shaft portion 16a and the pin holes 12a and 13a are fixed. A desired distance is obtained from the central axis L1.
[0015]
In the chuck device 3, a rotating ring 21 is provided on the lower side of the chuck frame 20, and a plurality of chuck members 22 are vertically suspended at equal intervals below the rotating ring 21. Outer guide cylinders 23 are vertically provided through the four corners of the chuck frame 20, and four chuck cylinders 24 are suspended in the vicinity of the inner side of the outer guide cylinder 23.
[0016]
In addition, the plurality of chuck members 22 are engaged with a tapered surface (not shown) formed on the rotary frame 6 while gripping a casing tube (not shown) on the inside thereof, so that the rotation of the drive motor 10 is performed. The casing tube is rotated by driving, the elevating cylinder 9 is reduced, and the elevating body 8 is lowered to press the casing tube into the soil. The four outer guide cylinders 23 of the chuck device 3 are provided at the same vertical position as the inner guide cylinder 11 of the casing tube rotating device 2. While guiding the raising and lowering of the chuck device 3 that grips the tube, the raising and lowering of the chuck device 3 is also guided when the casing tube rotating device 2 and the chuck device 3 are attached and detached.
[0017]
The four chuck cylinders 24 are used to lift or lower the chuck device 3 by its expansion and contraction, and to move the chuck member 22 between the casing tube and the rotating frame 6 so as to grip or open the casing tube. It is used to detachably connect the casing tube rotating device 2 and the chuck device 3 by engaging and disengaging the engaging pins 26 with the coupling bracket 25 and the joint plates 12 and 13 of the casing tube rotating device 2.
[0018]
The connecting bracket 25 is a thick plate that can be inserted into the gap C <b> 1 between the joint plates 12 and 13, and the outer shape is formed in an arc shape except for the upper portion connected to the chuck cylinder 24. Pin holes 25a having the same diameter as the pin holes 12a and 13a are formed. The connecting bracket 25 is located in the gap C1 between the joint plates 12 and 13 when the guide tubes 11 and 23 of the casing tube rotating device 2 and the chuck device 3 are fitted inside and outside, and the pin hole 25a. The center axis L3 is set so as to intersect the center axis L2 of the adjustment bolt L2.
[0019]
The engaging pin 26 has an outer diameter that can be inserted into the pin holes 12a, 13a, and 25a, and a head using a rectangular plate material at the base end of the shaft portion 26a that extends over the joint plates 12 and 13 that are spaced apart from each other. The above-described pin type connecting device 4 includes an engaging pin 26, joint plates 12 and 13 having pin holes 12a, 13a, and 25a, a connecting bracket 25, and a lifting frame. 7 and the adjusting bolt 16 are provided.
[0020]
The present embodiment is configured as described above. When the casing tube rotating device 2 and the chuck device 3 are connected as the tubing device 1, the engagement pins 26 inserted into both the pin holes 12a, 13a, 25a are provided. It is secured by appropriate retaining means such as a bolt, a split pin, a circlip, and an engagement pin. Further, the adjustment bolt 16 is screwed downward, the tip 16b of the shaft portion 16a is separated from the lower end of the outer peripheral surface of the connection bracket 25 of the chuck device 3, and the load of the chuck device 3 is changed to four engagement pins. 26 is carrying.
[0021]
When the casing tube rotating device 2 and the chuck device 3 thus connected are disassembled by conveyance or the like, the adjustment bolt 16 is screwed upward so that the tip 16b of the shaft portion 16a is brought to the lower end of the outer peripheral surface of the connecting bracket 25. The chuck device 3 is pushed up by screwing in the adjusting bolt 16, and the center axes L1 and L3 of the pin holes 12a, 13a and 25a on the joint plate 12 and 13 side and the connecting bracket 25 side are aligned, and this state is obtained. The lock nut 16 is held by tightening.
[0022]
A wire rope 27 suspended from a crane (not shown) is hooked on the upper portion of the chuck device 3, and a retaining means engaged with the engaging pin 26 is removed, and the shaft portion 26a is connected to the pin holes 12a, 13a, 25a. The chuck device 3 is separated from the casing tube rotating device 2 by lifting the chuck device 3 with a crane.
Thus, between the front end 16b of the adjusting bolt 16 after separating the chuck device 3 and the central axis L1 of the pin holes 12a and 13a on the chuck device 3 side, it corresponds to the lower radius of the connecting bracket 25. The length interval remains intact.
[0023]
Further, in order to connect the casing tube rotating device 2 and the chuck device 3 disassembled by transportation or the like at the work site, the chuck device 3 is lifted by a crane above the casing tube rotating device 2 placed on the ground surface, After each of the guide cylinders 23 is extrapolated to the inner guide cylinder 11, the chuck device 3 is lowered by the guide of the guide cylinders 11 and 23 (see FIG. 2).
[0024]
In the state where the guide cylinders 11 and 23 are inserted into the inside and outside, the lateral position of the chuck device 3 with respect to the lower casing tube rotating device 2 is determined as set, and the connection bracket 25 is connected between the joint plates 12 and 13. The central axis L3 of the pin hole 25a is positioned on the central axis L2 of the adjusting bolt 16 that is perpendicular to the central axis L1 of the pin holes 12a and 13a of the joint plates 12 and 13. When the chuck device 3 is further lowered, the connecting bracket 25 enters the gap C1, the tip 16b of the adjusting bolt 16 comes into contact with the lower end of the outer peripheral surface of each connecting bracket 25, and the lowering of the entire chuck device 3 stops.
[0025]
The lateral position of the central axis L3 on the side of the connecting bracket 25 has already been aligned with the central axis L1 on the side of the coupling plates 12 and 13 by the insertion of the inner and outer guide cylinders 11 and 23 as described above. Since the tip 16b of the adjustment bolt 16 that supports the center axis L1 of the pin holes 12a and 13a of the joint plates 12 and 13 is set to a length corresponding to the lower radius of the connecting bracket 25, The center axes L1 and L3 on the joint plates 12 and 13 side and the connecting bracket 25 side also coincide.
[0026]
The pin holes 12a, 13a, 25a on both the joint plates 12, 13 side and the connecting bracket 25 side are accurately aligned in this way, and the shaft portion 26a of the engaging pin 26 is engaged with these pin holes 12a, 13a, 25a. , And the engagement pin 26 is prevented from coming off by using a retaining means such as the bolt or the split pin. Thereafter, the adjustment bolt 16 is unscrewed downward, and the tip 16b of the bolt 16 is separated from the lower end of the outer peripheral surface of the connection bracket 25, whereby the load of the chuck device 3 is carried by the four engagement pins 26.
[0027]
As described above, the pin type coupling device 4 of the present embodiment is used when the chuck device 3 of the tubing device 1 is connected to or separated from the casing tube rotating device 2 while being lifted by a crane. The holes 12a, 13a, and 25a can be accurately and simply aligned, and the engagement pin 26 can be easily inserted and removed.
[0028]
As a result, it is not necessary to adjust the delicate lifting condition with the crane for attaching and detaching the casing tube rotating device 2 and the chuck device 3, and the misleading load caused by hanging from the crane is not applied to the engaging pin 26. The casing tube rotating device 2 and the chuck device 3 can be disassembled and assembled safely in a short time.
[0029]
In the above description of connection and disassembly, the adjustment bolt 16 is screwed back with the engaging pin 26 of the pin type connecting device 4 inserted into the pin holes 12 a, 13 a, and 25 a, and the tip 16 b is connected to the outer periphery of the connecting bracket 25. Although it is separated from the lower end of the surface, there is no problem even if the tip 16b of the adjusting bolt 16 and the lower end of the outer peripheral surface of the connecting bracket 25 are brought into contact with each other when the engagement pin 26 is inserted.
[0030]
Next, second and third embodiments of the present invention will be described. Note that the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
In the pin type coupling device 30 shown in the second embodiment of FIG. 4, two sets of the guide sleeve 15 and the adjusting bolt 16 of the first embodiment are used below the joint plates 12 and 13 of the casing tube rotating device 2. The other parts have substantially the same configuration as the first embodiment.
[0031]
The guide sleeves 15 and 15 and the adjusting bolts 16 and 16 are inclined in the direction of the pin holes 12a and 13a with the vertical center axis L4 intersecting with the center axis L1 of the pin holes 12a and 13a of the joint plates 12 and 13 being sandwiched. It is arranged symmetrically and is connected by supporting the lower ends of the arcuate outer peripheral surface of the connecting bracket 25 at the tips 16b, 16b of both shaft portions 16a, 16a located near the central axis L4. The left and right and vertical positions of the center axis L3 of the pin hole 25a of the bracket 25 are automatically aligned with the center axis L1 of the pin holes 12a and 13a of the joint plates 12 and 13.
Therefore, in the case of this embodiment, both pin holes 12a, 13a, and 25a can be easily and inexpensively aligned without using the inner and outer guide cylinders 11 and 23 of the first embodiment.
[0032]
The pin type connecting device 40 of the third embodiment shown in FIG. 5 includes pin holes 12a, 13a on the joint plates 12, 13 side, 25a on the connecting bracket 25 side, an engagement pin 26 connecting them, and a pin hole 12a. , 13a and a pair of jig moving means 41, 41 provided below.
[0033]
The jig moving means 41 and 41 are arranged symmetrically with respect to the vertical center axis L4 intersecting the central axis L1 of the pin holes 12a and 13a of the joint plates 12 and 13, and the jig moving means 41 In each of these, an adjustment bolt 42 is screwed onto a guide plate 7b erected on the lower web 7a of the elevating frame 7, and the tip of the shaft portion 42a of the adjustment bolt 42 protruding from the guide plate 7b to the central axis L4 side is provided. A lock nut 44 is screwed onto a shaft portion 42a of an adjusting bolt 42 that is rotatably inserted into a aligning jig 43 and projects from the guide plate 7b to the opposite side of the central axis L4.
[0034]
The jigs 43 and 43 are tapered blocks provided with tapered receiving surfaces 43a and 43a for supporting the lower side of the arcuate outer peripheral surface of the connecting bracket 25 on the upper surface facing the other side. The adjustment bolt 42 is screwed to move the web 7a perpendicular to the central axis L4, which is the lifting and lowering direction of the chuck device 3, in the approaching or separating directions, and the moving position is fixed by tightening the lock nut 44. Yes.
[0035]
As described above, the pin type connecting device 40 of the present embodiment moves the jigs 43 and 43 toward or away from each other, thereby allowing the receiving surfaces 43a and 43a and the joint plates 12 and 13 on the casing tube rotating device 2 side. A length corresponding to the lower radius of the connection bracket 25 is set between the pin holes 12a and 13a and the central axis L1 of the pin holes 12a and 13a. By supporting the portion, the left and right and vertical positions of the central axis L3 of the pin hole 25a of the connecting bracket 25 are automatically aligned with the central axis L1 of the pin holes 12a and 13a of the joint plates 12 and 13.
[0036]
Note that the lower side of the outer peripheral surface of the connecting bracket does not necessarily have to be a circular arc surface concentric with the pin hole drilled inside. The adjusting bolt may be screwed directly into the lower article, and the guide sleeve used in the embodiment can be omitted. A plurality of adjusting bolts and a pair of aligning jigs used for automatic pin hole alignment are not necessarily provided symmetrically below the connecting bracket, but can automatically align the pin holes of both upper and lower articles. is there.
Further, the present invention can be widely applied as a pin-type connecting device for connecting two articles up and down detachably in various industrial fields in addition to the tubing device shown in the embodiment.
[0037]
【The invention's effect】
As described above, according to the pin type coupling device of the present invention, when the upper part is lifted by a lifting means such as a crane and is connected to or separated from the lower part, the pin holes of both parts are accurately defined. Therefore, the engagement pin can be easily inserted and removed. This eliminates the need for delicate adjustment of the suspension using the crane and the wire rope, and enables easy and safe connection and disassembly work in a short time.
[Brief description of the drawings]
FIG. 1 is a cross-sectional front view of an essential part showing a connection state of a casing tube rotating device and a chuck device according to a first embodiment of the present invention. FIG. 2 is a casing tube rotating device and a chuck device according to a first embodiment of the present invention. FIG. 3 is an overall front view of the tubing device showing a divided state of the casing. FIG. 3 is a cross-sectional side view of the coupling state of the casing tube rotating device and the chuck device showing the first embodiment of the present invention. FIG. 5 is a cross-sectional front view of an essential part of a connected state of the casing tube rotating device and the chuck device shown in FIG. 5; ]
DESCRIPTION OF SYMBOLS 1 ... Tubing apparatus, 2 ... Casing tube rotation apparatus (lower article of this invention), 3 ... Chuck apparatus (lower article of this invention), 4, 30, 40 ... Pin type coupling device, 7 ... Elevating frame 8 ... Elevating body, 11 ... Inner guide tube, 12, 13 ... Joint plate, 12a, 13a, 25a ... Pin hole, 14 ... Receiving plate, 15 ... Guide sleeve, 16 ... Adjustment bolt, 16a ... Shaft, 16b ... Tip of shaft portion 16a, 17 ... lock nut, 20 ... chuck frame, 22 ... chuck member, 23 ... outer guide cylinder, 24 ... chuck cylinder, 25 ... coupling bracket, 26 ... engagement pin, 26a ... shaft portion, 26b ... Head portion 41... Jig moving means 42... Adjustment bolt 42 a. Shaft portion 43. Jig 44. Lock nut C1... Gap between joint plates 12 and 13, L1, L2, L3, L4. Central axis

Claims (3)

A pin-type coupling device that detachably couples two articles located above and below using an engagement pin and a pin hole, the upper article suspended by a lifting means such as a crane and the like In the pin-type connecting device in which the pin holes are formed in both of the articles and the engaging pins are inserted into the pin holes to connect the two articles, the pin holes of the upper article are formed in the connecting bracket. The pin type connecting device is characterized in that an adjustment bolt for supporting the connecting bracket at its tip is screwed to be vertically movable in a position below the pin hole of the lower article. 2. The connecting bracket according to claim 1, wherein at least a lower side of the outer peripheral surface of the connecting bracket is formed in an arc shape, and a plurality of the adjusting bolts are formed, and the adjusting bolts are inclined toward a pin hole of the lower article. The pin type coupling device according to 1. A pin-type coupling device that detachably couples two articles located above and below using an engagement pin and a pin hole, the upper article suspended by a lifting means such as a crane and the like In the pin-type connecting device in which the pin holes are formed in both of the articles and the engaging pins are inserted into the pin holes to connect the two articles, the pin holes of the upper article are formed in the connecting bracket. The connecting bracket has an outer peripheral surface formed in an arc shape, and a pair of aligning jigs are arranged in a position below the pin hole of the lower article so as to be movable toward and away from each other. A pin-type connecting device, wherein a tapered receiving surface for supporting the outer peripheral surface of the connecting bracket of the upper article is provided on the upper surface on the opposite side of both jigs.

Images