JP7569728B2 - Rolling Machine - Google Patents

Description

The present invention relates to a rolling machine, and in particular to a rolling machine equipped with mat brushes.

Conventionally, rolling machines equipped with mat brushes have been known (for example, Patent Document 1). Patent Document 1 describes a tire roller equipped with a sliding body that forms a film of water or liquid on the tire tread and a support means for supporting the sliding body. In the tire roller, the sliding bodies that slide against the left and right tires are connected to each other by pipe members. The pipe members are rotatably connected to a bracket attached to the vehicle body via upper and lower link arms. In the tire roller described in Patent Document 1, a stopper rod equipped with a claw portion for holding the sliding body in a position away from the tire tread is rotatably held by the bracket. In addition, a stopper receiving pin for engaging with the claw portion of the stopper rod is fixed midway on the lower link arm.

When removing the sliding body from the tread of the rear wheel in this tire roller, hold the support means of the sliding body (e.g. a pipe material) by hand and pull up the upper link arm to a specified position. In this state, the stopper rod falls backwards due to its own weight. Next, release your hand from the support means of the sliding body. As a result, the weight of the sliding device and the tensile force of the tension spring engage the stopper receiving pin with the claw of the stopper rod, and the sliding body is held in a position away from the tread of the rear wheel.

On the other hand, when the sliding body of the tire roller is brought into sliding contact with the tread of the rear wheel, the support means of the sliding body (e.g., a pipe material) is held by hand and the upper link arm is raised to a specified position. Next, the stopper rod is held by hand and rotated forward until the claw portion is released from the stopper receiving pin. Finally, the support means of the sliding body is released. This causes the sliding body to be pressed against the tread of the rear wheel by the weight of the sliding device and the tensile force of the tension spring.

JP 2001-131906 A

In this way, in the tire roller described in Patent Document 1, when the sliding body is brought into sliding contact with the tire tread, the worker needs to hold the support means with one hand and the stopper rod with the other hand. In this way, the worker needs to use both hands to bring the sliding body into sliding contact with the tire tread, which could make the work less easy.

The present invention was made in consideration of these problems, and its purpose is to provide a rolling machine that allows the operation of contacting the mat brush with the wheel and the operation of removing the mat brush from the wheel to be performed with one hand, thereby improving the workability of the operation.

In order to achieve the above object, the rolling machine of the present invention comprises a body, wheels including front and rear wheels rotatably attached to the body, and a sliding contact device attached to the body corresponding to each of the front and rear wheels, the sliding contact device including a mat brush, a brush fixing part fixed to the mat brush and swingably attached to the body, a retaining pin attached to the brush fixing part, and a handle part provided on the brush fixing part, the mat brush support member being configured so that the mat brush moves toward and away from the wheels in response to the swinging of the brush fixing part, and a lever member swingably attached to the body and including an engaging part configured so that an engagement state with the retaining pin is switched in response to the swinging of the lever member, the mat brush is held in a position spaced apart from the wheels when the engaging part and the retaining pin are engaged with each other, and the sliding contact device includes a mat brush supporting member configured so that the mat brush moves toward and away from the wheels in response to the swinging of the brush fixing part, the mat brush supporting member being configured so that the mat brush moves toward and away from the wheels in response to the swinging of the brush fixing part, and a lever member swingably attached to the body and including an engaging part configured so that an engagement state with the retaining pin is switched in response to the swinging of the lever member, the mat brush is held in a position spaced apart from the wheels in a state where the engaging part and the retaining pin are engaged with each other, and the mat brush is supported by a mat brush supporting member configured so that the mat brush supporting member ... In a rolling compaction machine comprising a lever member configured so that the mat brush contacts the wheel when the engagement with the retaining pin is released, the lever member has an operating portion which switches the engagement state between the engagement portion and the retaining pin, and the operating portion terminates at a position above the lower end of the handle portion in the swing direction of the brush fixing portion when the engagement portion and the retaining pin are engaged , and is configured to include a first protrusion and a second protrusion extending toward the handle portion, and the first protrusion is formed so as to terminate at a position closer to the handle portion than the swing direction of the brush fixing portion when the engagement portion and the retaining pin are engaged, and the second protrusion is formed so as to terminate at a position farther from the handle portion than the swing direction of the brush fixing portion when the engagement portion and the retaining pin are engaged .

In the rolling machine of the present invention, the lever member includes an engagement portion configured to switch the engagement state with the holding pin in response to the swing of the lever member , and an operating portion for switching the engagement state between the engagement portion and the holding pin. The lever member is configured to hold the mat brush at a position away from the wheel when the engagement portion and the holding pin are engaged, and to bring the mat brush into contact with the wheel when the engagement portion and the holding pin are disengaged. The operating portion includes a first protrusion and a second protrusion extending in the direction of the handle portion, and the first protrusion is formed so as to terminate at a position closer to the handle portion with respect to the swing direction of the brush fixing portion when the engagement portion and the holding pin are engaged, and the second protrusion is formed so as to terminate at a position farther from the handle portion with respect to the swing direction of the brush fixing portion when the engagement portion and the holding pin are engaged . In this way, the operating portion includes the first protrusion and the second protrusion, and terminates at a position that is easy to operate with the thumb of the operator when the operator holds the handle portion with a right hand or a wrong hand . Therefore, the operator can hold the handle with one hand to swing the brush fixing part, while operating the operating part with the thumb of the hand holding the handle to swing the lever member. In other words, the operator can perform the operation of swinging the brush fixing part and the operation of switching the engagement state of the retaining pin and the engagement part with only the hand holding the handle, i.e., with one hand. In this way, the operation of bringing the mat brush into contact with the wheels and the operation of separating the mat brush from the wheels can be performed with one hand, and a rolling machine that improves the workability of the operation can be provided.

1 is a perspective view showing a schematic configuration of a rolling machine according to a first embodiment of the present invention; 2 is an enlarged perspective view showing a schematic configuration of a sliding contact device provided in correspondence with a front wheel of the rolling machine shown in FIG. 1 . 3 is an enlarged perspective view showing a part of the sliding contact device shown in FIG. 2 in a state where the mat brush is separated from the front wheel; FIG. 3 is an enlarged perspective view showing a part of the sliding contact device shown in FIG. 2 in a state where the mat brush is in contact with the front wheel. FIG. 3A and 3B are diagrams for explaining the operation of bringing the mat brush into contact with the front wheel in the sliding contact device shown in FIG. 2, in which (A) shows the state in which the mat brush is separated from the front wheel, (B) shows the state in which the operator pulls up the mat brush support member with his right hand and operates the lever member, and (C) shows the state in which the mat brush is in contact with the front wheel. 3A and 3B are diagrams for explaining the operation of bringing the mat brush into contact with the front wheel in the sliding contact device shown in FIG. 2, in which (A) shows the state in which the mat brush is separated from the front wheel, (B) shows the state in which the operator pulls up the mat brush support member with his/her back hand and operates the lever member, and (C) shows the state in which the mat brush is in contact with the front wheel. 3A and 3B are diagrams for explaining the operation of moving the mat brush away from the front wheel in the sliding contact device shown in FIG. 2, in which (A) shows the state in which the mat brush is in contact with the front wheel, (B) shows the state in which the mat brush support member is pulled up by the worker, and (C) shows the state in which the mat brush is moved away from the front wheel. 1 is an enlarged oblique view showing, in outline, a portion of a sliding contact device provided in correspondence with a front wheel of a rolling machine according to a second embodiment of the present invention, illustrating a state in which the mat brush is separated from the front wheel. FIG. 9A and 9B are diagrams for explaining the operation of moving the mat brush away from the front wheel in the sliding contact device shown in Figure 8, in which (A) shows the state in which the mat brush is in contact with the front wheel, (B) shows the state in which the operator pulls up the mat brush support member with his or her right hand and operates the lever member, and (C) shows the state in which the mat brush has been moved away from the front wheel. 9A and 9B are diagrams for explaining the operation of moving the mat brush away from the front wheel in the sliding contact device shown in Figure 8, in which (A) shows the state in which the mat brush is in contact with the front wheel, (B) shows the state in which the operator pulls up the mat brush support member with his/her back hand and operates the lever member, and (C) shows the state in which the mat brush has been moved away from the front wheel.

The following describes an embodiment of the present invention with reference to the drawings.

First Embodiment
FIG. 1 is a perspective view showing a schematic configuration of a rolling machine 1 according to a first embodiment of the present invention. FIG. 2 is an enlarged perspective view showing a schematic configuration of a sliding contact device 30 provided in correspondence with the front rolling roller 22 of the rolling machine 1 shown in FIG. 1. FIG. 3 is an enlarged perspective view showing a schematic portion of the sliding contact device 30 shown in FIG. 2, showing a state in which the mat brush 40 is separated from the front rolling roller 22. FIG. 4 is an enlarged perspective view showing a schematic portion of the sliding contact device 30 shown in FIG. 2, showing a state in which the mat brush 40 is in contact with the front rolling roller 22. FIG. 5 is a diagram for explaining an operation of bringing the mat brush 40 into contact with the front rolling roller 22 in the sliding contact device 30 shown in FIG. 2, in which (A) shows a state in which the mat brush 40 is separated from the front rolling roller 22, (B) shows a state in which an operator pulls up the mat brush support member 50 with his right hand and operates the lever member 60, and (C) shows a state in which the mat brush 40 is in contact with the front rolling roller 22. Fig. 6 is a diagram for explaining the operation of bringing the mat brush 40 into contact with the front roller 22 in the sliding contact device 30 shown in Fig. 2, where (A) shows the mat brush 40 separated from the front roller 22, (B) shows the state in which an operator pulls up the mat brush support member 50 with his/her back hand and operates the lever member 60, and (C) shows the state in which the mat brush 40 is in contact with the front roller 22. Fig. 7 is a diagram for explaining the operation of bringing the mat brush 40 into contact with the front roller 22 in the sliding contact device 30 shown in Fig. 2, where (A) shows the state in which the mat brush 40 is in contact with the front roller 22, (B) shows the state in which the mat brush support member 50 is pulled up by the operator, and (C) shows the state in which the mat brush 40 is separated from the front roller 22.

For ease of explanation, "front," "rear," "left," and "right" are defined based on the traveling direction of the rolling machine 1 as seen by the worker (not shown) in the cabin 26, and "up" and "down" are defined based on gravity. That is, the "front" and "rear" arrows shown in each figure indicate the forward and backward directions of the rolling machine 1, and the "up" and "down" arrows indicate the up and down directions of the rolling machine 1. The "left" and "right" arrows refer to the left and right (vehicle width) directions of the rolling machine 1, and are perpendicular to the forward and backward directions and the up and down directions.

As shown in FIG. 1, the rolling machine 1 includes a body 10, rolling rollers 20 (wheels) including a front rolling roller 22 (front wheel) and a rear rolling roller 24 (rear wheel) rotatably attached to the body 10, and sliding contact devices 30 attached to the body 10 corresponding to the front rolling roller 22 and the rear rolling roller 24, respectively.

As shown in FIG. 1, the front roller 22 and the rear roller 24 are rotatably attached to the front and rear of the vehicle body 10, respectively, and also serve as wheels of the rolling machine 1. The front roller 22 is rotatably supported by the front frame 18 via a front axle (not shown). In addition, a plurality of the front rollers 22 are arranged adjacent to each other in the left-right direction of the vehicle body 10. Specifically, the front roller 22 includes a central roller 22b arranged in the center or approximately in the center in the vehicle width direction, and a left roller 22a and a right roller 22c arranged on both the left and right sides of the central roller 22b. The central roller 22b, the left roller 22a, and the right roller 22c are arranged spaced apart from each other in the vehicle width direction. The front roller 22 is a steering wheel, and can be steered by a steering handle 26a arranged in the cabin 26, as shown in FIG. 1.

The rear roller 24 is a drive wheel, and can be operated by operating devices such as a forward/reverse switch lever and an engine speed switch (neither of which are shown) located in the cabin 26. The machine body 10 is provided with an engine room (not shown), in which an HST system is located. The HST system is composed of an engine, a hydraulic pump for traveling, a gear pump, a hydraulic motor for traveling, and the like. The HST is a so-called hydraulic continuously variable transmission that uses the driving force of the engine to operate pumps such as the hydraulic pump for traveling and the gear pump to circulate hydraulic oil, and the circulation of hydraulic oil enables the machine body 10 to be driven, decelerated, and stopped. Note that the configuration of the HST itself is well known, so a detailed description thereof will be omitted.

As shown in Figures 2 to 4, the machine body 10 is configured to include a support member 12, a bracket 14, a yoke 16, and a front frame 18. The support member 12, the bracket 14, the yoke 16, and the front frame 18 are provided in correspondence with the front rolling roller 22.

As shown in FIG. 2, the front frame 18 includes a front beam 18a, a pair of side beams 18b, and a rear beam (not shown). The front beam 18a extends in the left-right direction in front of the central roller 22b. The rear beam extends in the left-right direction behind the central roller 22b. The pair of side beams 18b extend in the front-rear direction of the machine body 10 between the central roller 22b and the left roller 22a, and between the central roller 22b and the right roller 22c. In addition, the pair of side beams 18b are connected to the front beam 18a and the rear beam at their front-rear ends. As a result, the front beam 18a, the pair of side beams 18b, and the rear beam are arranged to surround the central roller 22b.

As shown in FIG. 2, the yoke 16 has an upwardly convex arch shape, and the top of the yoke 16 is attached to the underside of the machine body 10. The yoke 16 is also fixed at both ends to the front beam 18a and the rear beam. The yoke 16 is configured to rotate in response to the direction of the steering handle 26a, thereby steering the front rolling roller 22.

As shown in FIG. 2, the support member 12 includes a left support 12a and a right support 12b fixed to each of the pair of side beams 18b. The left support 12a is fixed to the upper surface of the left side of the pair of side beams 18b using a bolt. The right support 12b is fixed to the upper surface of the right side of the pair of side beams 18b using a bolt. The support member 12 is positioned forward of the front axle of the front roller 22 and extends upward from the upper surface of the pair of side beams 18b. A liquid agent pipe 96 and a water spray pipe 98 extending in the vehicle width direction are attached to the left support 12a and the right support 12b, and water or the like is sprayed onto the front roller 22 through the liquid agent pipe 96 and the water spray pipe 98.

As shown in Figures 2 to 4, the bracket 14 is composed of a left bracket 14a and a right bracket 14b fixed to the left support pillar 12a and the right support pillar 12b, respectively. The left bracket 14a and the right bracket 14b are each a pair of plate members spaced apart from each other in the vehicle width direction, and are formed parallel to each other, extending forward from the left support pillar 12a and the right support pillar 12b.

As shown in Figures 2 to 4, the sliding contact device 30 includes a mat brush 40, a mat brush support member 50, a lever member 60, and a tension spring 80 as a spring member. Below, the sliding contact device 30 will be described as being provided in correspondence with the front rolling roller 22, but the sliding contact device 30 may also be provided in correspondence with the rear rolling roller 24.

As shown in FIG. 2, the mat brush 40 is provided in correspondence with the front roller 22. Specifically, the mat brush 40 includes a left mat brush 40a provided in correspondence with the left roller 22a, a central mat brush 40b provided in correspondence with the central roller 22b, and a right mat brush 40c provided in correspondence with the right roller 22c. The mat brush 40 is configured to remove dirt, composite material, etc. adhering to the peripheral surface of the front roller 22, and to form a film of water or liquid agent on the peripheral surface of the front roller 22.

As shown in Figures 2 to 4, the mat brush support member 50 is configured to include a brush fixing part 52 that is fixed to the mat brush 40 and is swingably attached to the machine body 10, a retaining pin 54 attached to the brush fixing part 52, and a handle part 56 provided on the brush fixing part 52.

The brush fixing part 52 is composed of a pipe member 52a, a pair of connecting members 52b, and a first rotating shaft 52c. The pipe member 52a is a member bent into a substantially rectangular shape and is fixed to the mat brush 40. Specifically, the pipe member 52a is fixed to the backs (the side opposite to the side that slides against the front rolling roller 22) of the left mat brush 40a, the central mat brush 40b, and the right mat brush 40c, and fixes the left mat brush 40a, the central mat brush 40b, and the right mat brush 40c together.

The pair of connecting members 52b is a pair of plate materials spaced apart from each other in the width direction, and extend parallel to each other diagonally forward and downward of the machine body 10. Two pairs of connecting members 52b are provided: between the central roller 22b and the left roller 22a, and between the central roller 22b and the right roller 22c. These pairs of connecting members 52b have the same configuration, so here we will only explain the pair of connecting members 52b arranged between the central roller 22b and the left roller 22a.

3 and 4, the pair of connecting members 52b are fixed at the upper end with the first rotating shaft 52c penetrating in the left-right direction. The first rotating shaft 52c is a rod-shaped member with a circular cross section, and the pair of connecting members 52b are swingably attached to the bracket 14 via the first rotating shaft 52c. The pair of connecting members 52b are configured to include a front protrusion 94 extending to the right from the member located on the left side of the pair of connecting members 52b. The front protrusion 94 is formed in a rod shape with a circular cross section. The pair of connecting members 52b are also fixed to the pipe member 52a at the lower end. In this way, the mat brush support member 50 is configured so that the mat brush 40 comes into contact with and separates from the front rolling roller 22 in response to the swinging of the brush fixing part 52. Specifically, the mat brush support member 50 is configured so that the mat brush 40 comes into contact with the front rolling roller 22 by swinging the brush fixing part 52 around the first rotating shaft 52c in a direction approaching the front rolling roller 22. In addition, the mat brush support member 50 is configured such that the mat brush 40 moves away from the front roller 22 by the brush fixing portion 52 swinging about the first rotation shaft 52c in a direction away from the front roller 22. Here, "the mat brush 40 moves toward and away from the front roller 22" means that the mat brush 40 comes into contact with the front roller 22 and moves away from the front roller 22.

3 and 4, the retaining pin 54 is a rod-shaped member fixed to a pair of connecting members 52b, and is formed to extend in the left-right direction between the pair of connecting members 52b. The handle portion 56 is formed as a part of the pipe member 52a. Specifically, two handle portions 56 are provided in the lower portion of the left-right extending portion of the pipe member 52a, one between the central roller 22b and the left roller 22a, and the other between the central roller 22b and the right roller 22c. The handle portions 56 are held by the operator when swinging the mat brush support member 50, and the operator grasps the handle portions 56 to move the mat brush 40 closer to or farther from the roller 20.

As shown in FIG. 2, two lever members 60 are provided corresponding to the handle portion 56, one between the central roller 22b and the left roller 22a, and the other between the central roller 22b and the right roller 22c. Thus, two sets of handle portions 56 and lever members 60 are provided, spaced apart in the width direction of the machine body 10. Note that both lever members 60 have the same configuration, so here only the lever member 60 arranged between the central roller 22b and the left roller 22a will be described.

3 and 4, the lever member 60 is a plate-shaped member including a base 66, an engagement portion 62, and an operating portion 64, and is attached to the machine body 10 so as to be able to swing. Specifically, a second rotating shaft 60a, which is a rod-shaped member, is fixed to the base 66 and penetrates it in the left-right direction, and the lever member 60 is attached to the bracket 14 so as to be able to swing via the second rotating shaft 60a. The second rotating shaft 60a is disposed below the first rotating shaft 52c. The lever member 60 is also configured to include a rear projection 95 extending leftward from the base 66. The rear projection 95 is provided on the base 66 below the second rotating shaft 60a. The rear projection 95 is formed in a rod shape with a circular cross section.

3 and 4, the operating portion 64 is configured to switch the engagement state between the engaging portion 62 and the holding pin 54. Specifically, the operating portion 64 is formed to terminate at a position that can be reached by at least one of the fingers of the operator when the operator is gripping the handle portion 56, for example, within a range of a radius of 80 mm centered on the handle portion 56 on a plane perpendicular to the longitudinal direction (left-right direction) of the handle portion 56. Also, as shown in FIG. 5(A), when the engaging portion 62 and the holding pin 54 are engaged, the operating portion 64 terminates at a position above the lower end 56A of the handle portion 56 in the swing direction of the brush fixing portion.

Specifically, the operating portion 64 includes a first protrusion 64a and a second protrusion 64b extending in the direction of the handle portion 56. As shown in FIG. 5B, the first protrusion 64a is formed so as to terminate at a position where the thumb 92 of the operator reaches when the operator holds the handle portion 56 with his/her right hand, for example, within a range of a radius of about 20 mm centered on the handle portion 56 on a plane perpendicular to the longitudinal direction (left-right direction) of the handle portion 56. Specifically, the first protrusion 64a extends obliquely forward and downward in a straight line from the front portion of the base 66, and is curved so as to be convex downward at its tip portion. Then, as shown in FIG. 5A, the first protrusion 64a is formed so as to terminate at a position forward of the handle portion 56, i.e., forward of the handle portion 56, based on the swing direction of the brush fixing portion 52 when the engaging portion 62 and the holding pin 54 are engaged. As shown in FIG. 6B, the second protrusion 64b is formed to terminate at a position where the thumb 92 of the operator reaches when the operator holds the handle 56 in the opposite hand, for example, within a radius of about 40 mm from the handle 56 on a plane perpendicular to the longitudinal direction of the handle 56. Specifically, the second protrusion 64b is located above the first protrusion 64a and extends diagonally forward and downward in a straight line from the front part of the base 66. As shown in FIG. 5A, the second protrusion 64b is formed to terminate at a position behind the handle 56, i.e., behind the handle 56, based on the swing direction of the brush fixing part 52, when the engagement part 62 and the holding pin 54 are engaged.

3 and 4, the engaging portion 62 is configured to switch the engagement state with the retaining pin 54 in response to the swinging of the lever member 60. Specifically, the engaging portion 62 is configured to include a third protrusion 62a, a fourth protrusion 62b, and an engaging recess 62c. As shown in FIG. 5(B), the fourth protrusion 62b is located above the second protrusion 64b, and is formed to extend obliquely forward and upward in a straight line from the front part of the base 66. The third protrusion 62a is located behind the fourth protrusion 62b, and is formed to extend obliquely forward and upward in a straight line from the upper part of the base 66. The third protrusion 62a is formed shorter than the fourth protrusion 62b. The engaging recess 62c is a portion formed between the third protrusion 62a and the fourth protrusion 62b, and is configured to engage with the retaining pin 54 in response to the swinging of the lever member 60. The engagement recess 62c is provided, for example, at a position with a radius of about 130 mm from the handle portion 56 on a plane perpendicular to the longitudinal direction (left-right direction) of the handle portion 56. As shown in FIG. 3, the lever member 60 is configured to hold the mat brush 40 in a position separated from the front roller 22 when the engagement portion 62 and the holding pin 54 are engaged, i.e., when the holding pin 54 is housed in the engagement recess 62c. Furthermore, as shown in FIG. 4, the lever member 60 is configured to allow the mat brush 40 to contact the front roller 22 when the engagement portion 62 and the holding pin 54 are disengaged, i.e., when the holding pin 54 is not housed in the engagement recess 62c.

3 and 4, the tension spring 80 includes a main body 86 made of a coil spring, a front end 84 (the other end) and a rear end 82 (one end) provided on the front and rear sides of the main body 86, respectively. The rear end 82 of the tension spring 80 is attached to the rear projection 95, and the front end 84 is attached to the front projection 94. As a result, the rear end 82 of the tension spring 80 is disposed below the second rotation shaft 60a of the lever member 60. The tension spring 80 is configured to exert a predetermined biasing force by the extension of the main body 86. Specifically, the tension spring 80 is biased in a direction in which the brush fixing part 52 approaches the front roller 22, i.e., the mat brush 40 contacts the front roller 22, when the engagement part 62 and the holding pin 54 are disengaged (FIG. 4). In addition, when the brush fixing part 52 swings in a direction away from the front roller 22, the tension spring 80 is biased in a direction in which the lever member 60 rotates clockwise around the second rotation shaft 60a as viewed from the left side of the machine body 10, that is, the engagement part 62 engages with the retaining pin 54.

Next, with reference to Figure 5, the operation of bringing the mat brush 40 into contact with the front rolling roller 22 while the operator is holding the handle portion 56 with the right hand will be described. Note that, from the viewpoint of ease of viewing the drawings, only Figure 5(B) shows the operator's left hand 90, and Figures 5(A) and (C) do not show the operator's hand 90. Also, the hand that holds the handle portion 56 does not have to be the left hand 90, and it could be the right hand.

As shown in FIG. 5(A), with the mat brush 40 held at a position separated from the front roller 22, the retaining pin 54 of the mat brush support member 50 is accommodated in the engagement recess 62c of the lever member 60. At this time, the first protrusion 64a terminates at a position above the lower end 56A of the handle portion 56 in the swing direction of the brush fixing portion. Specifically, the first protrusion 64a terminates at a position forward of the handle portion 56, that is, forward of the handle portion 56, based on the swing direction of the brush fixing portion 52. Next, as shown in FIG. 5(B), the worker pulls up the mat brush support member 50. Specifically, the worker holds the handle portion 56 of the mat brush support member 50 with the left hand 90 in the forward hand, and rotates the mat brush support member 50 clockwise around the first rotation shaft 52c until the retaining pin 54 is released from the engagement recess 62c. As a result, the retaining pin 54 is released from the engagement recess 62c, and the lever member 60 is swung counterclockwise and comes into contact with the tip of the third protrusion 62a of the engagement portion 62. In this state, the operator presses the tip of the first protrusion 64a of the operation portion 64 with the thumb 92 of the left hand 90 holding the handle portion 56. As a result, the lever member 60 further rotates counterclockwise around the second rotation shaft 60a. As a result, as shown in FIG. 5(C), the retaining pin 54 rides over the tip of the third protrusion 62a, and the mat brush support member 50 rotates counterclockwise around the first rotation shaft 52c due to the biasing force of the tension spring 80. As a result, the mat brush 40 is pressed against the front rolling roller 22.

Next, with reference to FIG. 6, an operation of bringing the mat brush 40 into contact with the front rolling roller 22 while the operator is holding the handle portion 56 with the opposite hand will be described. Note that, from the viewpoint of ease of viewing the drawings, the operator's hand 90 is shown only in FIG. 6(B), and is not shown in FIGS. 6(A) and (C). In addition, the hand holding the handle portion 56 does not have to be the left hand 90, and may be the right hand.

As shown in FIG. 6(A), with the mat brush 40 held at a position separated from the front roller 22, the retaining pin 54 of the mat brush support member 50 is accommodated in the engagement recess 62c of the lever member 60. At this time, the second protrusion 64b terminates at a position above the lower end 56A of the handle portion 56 in the swing direction of the brush fixing portion. Specifically, the second protrusion 64b terminates at a position further back than the handle portion 56, that is, rearward than the handle portion 56, based on the swing direction of the brush fixing portion 52. Next, as shown in FIG. 6(B), the worker pulls up the mat brush support member 50. Specifically, the worker holds the handle portion 56 of the mat brush support member 50 with the left hand 90 in the opposite hand, and rotates the mat brush support member 50 clockwise around the first rotation shaft 52c until the retaining pin 54 is released from the engagement recess 62c. As a result, the retaining pin 54 is released from the engagement recess 62c, and the lever member 60 is swung counterclockwise to abut against the tip of the third protrusion 62a of the engagement portion 62. In this state, the operator presses the tip of the second protrusion 64b of the operation portion 64 with the thumb 92 of the left hand 90 holding the handle portion 56. This causes the lever member 60 to further rotate counterclockwise around the second rotation shaft 60a. As a result, as shown in FIG. 6C, the retaining pin 54 rides over the tip of the third protrusion 62a, and the mat brush support member 50 rotates counterclockwise around the first rotation shaft 52c due to the biasing force of the tension spring 80. This causes the mat brush 40 to be pressed against the front rolling roller 22.

Next, with reference to Figure 7, we will explain the operation of moving the mat brush 40 away from the front roller 22 while the operator is gripping the handle portion 56. Note that since the operation of moving the mat brush 40 away from the front roller 22 is the same regardless of whether the operator is using a forward or reverse hand, the operator's hands are not shown in Figure 7 for ease of viewing.

As shown in FIG. 7(A), with the mat brush 40 pressed against the front roller 22, the retaining pin 54 of the mat brush support member 50 is completely disengaged from the engagement recess 62c of the lever member 60. Next, as shown in FIG. 7(B), the worker pulls up the mat brush support member 50. Specifically, the worker holds the handle 56 of the mat brush support member 50 with one hand and rotates the mat brush support member 50 clockwise around the first rotation shaft 52c until the retaining pin 54 abuts against the tip of the third protrusion 62a of the engagement portion 62. As shown in FIG. 7(C), the worker further rotates the mat brush support member 50 clockwise around the first rotation shaft 52c, so that the retaining pin 54 passes over the tip of the third protrusion 62a. As a result, as shown in FIG. 7C, the lever member 60 rotates clockwise around the second rotating shaft 60a due to the biasing force of the tension spring 80, and the retaining pin 54 is accommodated in the engagement recess 62c of the lever member 60. As a result, the mat brush 40 is held in a position spaced apart from the front roller 22. At this time, the first protrusion 64a and the second protrusion 64b terminate at a position above the lower end 56A of the handle portion 56 in the swing direction of the brush fixing portion. Specifically, the first protrusion 64a terminates at a position forward of the handle portion 56, i.e., forward of the handle portion 56, based on the swing direction of the brush fixing portion 52. The second protrusion 64b terminates at a position behind the handle portion 56, i.e., rearward of the handle portion 56, based on the swing direction of the brush fixing portion 52.

Next, we will explain the operation and effects of the compaction machine 1 according to the first embodiment of the present invention.

In the rolling machine 1 according to the first embodiment of the present invention, the lever member 60 includes an engagement portion 62 configured to switch the engagement state with the holding pin 54 in response to the swinging of the lever member 60, and an operation portion 64 that switches the engagement state between the engagement portion 62 and the holding pin 54. The lever member 60 is configured to hold the mat brush 40 at a position away from the front rolling roller 22 when the engagement portion 62 and the holding pin 54 are engaged, and to contact the mat brush 40 with the front rolling roller 22 when the engagement portion 62 and the holding pin 54 are disengaged. The operation portion 64 terminates at a position above the lower end 56A of the handle portion 56 in the swing direction of the brush fixing portion 52 when the engagement portion 62 and the holding pin 54 are engaged. In this way, the operation portion 64 terminates at a position that is easy to operate with the thumb of the operator when the operator holds the handle portion 56. Therefore, the operator can hold the handle portion 56 with one hand to swing the brush fixing portion 52, while operating the operating portion 64 with the thumb 92 of the hand 90 holding the handle portion 56 to swing the lever member 60. In other words, the operator can perform the operation of swinging the brush fixing portion 52 and the operation of switching the engagement state of the retaining pin 54 and the engagement portion 62 with only the hand 90 holding the handle portion 56, i.e., with only one hand. In this way, the task of moving the mat brush 40 toward and away from the front roller 22 can be accomplished with one hand, and a rolling machine 1 that improves the workability of the task can be provided.

In addition, according to the rolling machine 1 according to the first embodiment of the present invention, the operating section 64 includes a first protrusion 64a and a second protrusion 64b extending in the direction of the handle section 56. The first protrusion 64a is formed so as to terminate in front of the handle section 56, i.e., in front of the handle section 56, based on the swing direction of the brush fixing section 52, when the engaging section 62 and the holding pin 54 are engaged. The second protrusion 64b is formed so as to terminate in a position behind the handle section 56, i.e., in rear of the handle section 56, based on the swing direction of the brush fixing section 52, when the engaging section 62 and the holding pin 54 are engaged. Therefore, regardless of whether the hand 90 gripping the handle 56 is in the right or left hand, the operator can use only the hand 90 gripping the handle 56, that is, one hand, to rock the brush fixing part 52 and switch the engagement state of the retaining pin 54 and the engagement part 62. In this way, the task of moving the mat brush 40 toward and away from the front roller 22 can be accomplished with one hand, regardless of the orientation of the hand 90 gripping the handle 56, and a rolling machine 1 can be provided that further improves the workability of the task.

According to the rolling machine 1 according to the first embodiment of the present invention, the sliding contact device 30 further includes a tension spring 80 attached to the lever member 60 at the rear end 82 and attached to the brush fixing part 52 at the front end 84. The tension spring 80 is biased so that the mat brush 40 contacts the front rolling roller 22 when the engagement between the engagement part 62 and the holding pin 54 is released, and is biased so that the engagement part 62 engages with the holding pin 54 when the brush fixing part 52 swings in a direction away from the front rolling roller 22. Therefore, by swinging the mat brush support member 50 in a direction away from the front rolling roller 22 until the holding pin 54 exceeds the tip of the third protrusion 62a of the engagement part 62, the engagement part 62 can be engaged with the holding pin 54 by the biasing force of the tension spring 80. This makes it possible to easily perform the task of separating the mat brush 40 from the front rolling roller 22. In addition, because the mat brush 40 is pressed against the front roller 22 by the force of the tension spring 80, there is no need to prepare a separate spring member for pressing the mat brush 40 against the front roller 22, which reduces the number of parts.

In addition, according to the rolling machine 1 of the first embodiment of the present invention, the sliding device 30 has two sets of handles 56 and lever members 60 spaced apart in the width direction of the machine body 10. Therefore, while holding the handles 56 with both hands, the two lever members 60 can be operated simultaneously with both hands. In this way, the task of moving the mat brush 40 toward and away from the front rolling roller 22 can be performed simultaneously with both hands, providing a rolling machine 1 that further improves the workability of the task.

Second Embodiment
Next, a second embodiment of the present invention will be described. The rolling machine 1a according to the second embodiment differs from the above-mentioned rolling machine 1 in that it is not provided with a tension spring 80, and that a first pin 67 and a second pin 68 are provided on a lever member 70. Hereinafter, components having the same or similar functions as those of the above-mentioned rolling machine 1 will be given the same reference numerals as those of the rolling machine 1, and their description will be omitted, and only different parts will be described.

Figure 8 is an enlarged perspective view showing a schematic diagram of a part of the sliding contact device 30a provided in correspondence with the front roller 22 of the rolling machine 1a according to the second embodiment of the present invention, showing the state in which the mat brush 40 is separated from the front roller 22. Figure 9 is a diagram explaining the operation of separating the mat brush 40 from the front roller 22 in the sliding contact device 30a shown in Figure 8, where (A) shows the state in which the mat brush 40 is in contact with the front roller 22, (B) shows the state in which the operator pulls up the mat brush support member 50 with his right hand and operates the lever member 70, and (C) shows the state in which the mat brush 40 is separated from the front roller 22. FIG. 10 is a diagram explaining the operation of separating the mat brush 40 from the front roller 22 in the sliding contact device 30a shown in FIG. 8, where (A) shows the state in which the mat brush 40 is in contact with the front roller 22, (B) shows the state in which the operator pulls up the mat brush support member 50 with his/her back hand and operates the lever member 70, and (C) shows the state in which the mat brush 40 is separated from the front roller 22.

As shown in FIG. 8, the lever member 70 includes a first pin 67 extending leftward from the first protrusion 64a of the operating portion 64, and a second pin 68 extending leftward from the second protrusion 64b of the operating portion 64. The first pin 67 and the second pin 68 are provided at the tip portions of the first protrusion 64a and the second protrusion 64b, respectively, and are formed in a rod shape with a circular cross section. The first protrusion 64a may extend rightward from the first protrusion 64a, or may extend leftward from the first protrusion 64a. The second protrusion 64b may extend rightward from the second protrusion 64b, or may extend leftward from the second protrusion 64b. The first pin 67 and the second pin 68 do not have to be provided at the tip portions of the first protrusion 64a and the second protrusion 64b, respectively, and may be provided at positions that can be contacted by the thumb 92 when the operator is holding the handle portion 56. Specifically, the first pin 67 may be provided in a position that can be contacted by the thumb 92 when the operator is holding the handle 56 with the right hand, for example, within a range of a radius of about 20 mm from the handle 56 on a plane perpendicular to the longitudinal direction (left-right direction) of the handle 56. The second pin 68 may be provided in a position that can be contacted by the thumb 92 when the operator is holding the handle 56 with the left hand, for example, within a range of a radius of about 40 mm from the handle 56 on a plane perpendicular to the longitudinal direction (left-right direction) of the handle 56.

Next, with reference to Figures 9 and 10, the operation of moving the mat brush 40 away from the front roller 22 while the operator is gripping the handle portion 56 will be described. Note that, from the viewpoint of ease of viewing the drawings, the operator's hand 90 is shown only in Figures 9(B) and 10(B), and is not shown in Figures 9(A), 9(C), 10(A), and 10(C). In addition, the hand gripping the handle portion 56 does not have to be the left hand 90, and may be the right hand.

As shown in Fig. 9(A) and Fig. 10(A), when the mat brush 40 is pressed against the front roller 22, the retaining pin 54 of the mat brush support member 50 is completely disengaged from the engagement recess 62c of the lever member 70. Next, as shown in Fig. 9(B), the worker pulls up the mat brush support member 50. Specifically, the worker holds the handle portion 56 of the mat brush support member 50 with his right hand and rotates the mat brush support member 50 clockwise around the first rotation shaft 52c until the retaining pin 54 abuts against the tip of the third protrusion 62a of the engagement portion 62. In this state, the worker pushes the first pin 67 attached to the first protrusion 64a of the operation portion 64 upward with the thumb 92 of the left hand 90 that is holding the handle portion 56. As a result, the lever member 70 rotates clockwise around the second rotation shaft 60a. On the other hand, as shown in FIG. 10B, the operator may hold the handle 56 of the mat brush support member 50 with the opposite hand and rotate the mat brush support member 50 clockwise around the first rotation shaft 52c until the retaining pin 54 abuts against the tip of the third protrusion 62a of the engagement portion 62. In this state, the operator pushes the first pin 67 attached to the first protrusion 64a of the operation portion 64 upward with the thumb 92 of the left hand 90 holding the handle 56. This causes the lever member 70 to rotate clockwise around the second rotation shaft 60a. As a result, as shown in FIG. 9C and FIG. 10C, the retaining pin 54 rides over the tip of the third protrusion 62a, and the retaining pin 54 is accommodated in the engagement recess 62c of the lever member 70. As a result, the mat brush 40 is held in a position spaced apart from the front rolling roller 22.

The operation of bringing the mat brush 40 into contact with the front roller 22 while the operator is holding the handle 56 is the same as in the first embodiment, so a description of this operation is omitted.

Next, we will explain the operation and effects of the rolling machine 1a according to the second embodiment of the present invention.

According to the rolling machine 1a according to the second embodiment of the present invention, the lever member 70 is configured to include a first pin 67 extending leftward from the first protruding portion 64a of the operating portion 64, and a second pin 68 extending leftward from the second protruding portion 64b of the operating portion 64. In addition, the sliding contact device 30a does not include a tension spring. The first pin 67 and the second pin 68 are provided at a position where the operator can contact them with the thumb 92 while holding the handle portion 56. Therefore, the operator can perform the operation of swinging the brush fixing portion 52 and the operation of switching the engagement state of the holding pin 54 and the engagement portion 62 with only the hand 90 holding the handle portion 56, i.e., with only one hand. In this way, it is possible to provide a rolling machine 1 that can reduce the number of parts while performing the operation of moving the mat brush 40 toward and away from the front rolling roller 22 with one hand, thereby improving the workability of the operation.

Although the preferred embodiment of the present invention has been described above, the present invention is not limited to the rolling machines 1 and 1a according to the above-mentioned embodiments, but includes all aspects included in the concept of the present invention and the scope of the claims. In addition, each configuration may be appropriately and selectively combined to achieve the above-mentioned problems and effects. For example, the shape, material, arrangement, size, etc. of each component in the above-mentioned embodiment may be appropriately changed depending on the specific aspect of the present invention.

For example, in the above embodiment, the handle portion 56 is described as being formed as a part of the pipe member 52a. However, the handle portion 56 may be formed separately from the pipe member 52a and fixed to the pipe member 52a by welding or the like.

In the above embodiment, the operating portion 64 includes both the first protrusion 64a and the second protrusion 64b. However, the operating portion 64 may be composed of only one of the first protrusion 64a and the second protrusion 64b.

In the above embodiment, it has been described that two lever members 60, 70 are provided between the central roller 22b and the left roller 22a, and between the central roller 22b and the right roller 22c, corresponding to the handle portion 56. However, only one lever member 60, 70 may be provided at either one of the locations between the central roller 22b and the left roller 22a, and between the central roller 22b and the right roller 22c.

In the above embodiment, the sliding contact devices 30, 30a are described as being provided in correspondence with the front rolling roller 22. However, the sliding contact devices 30, 30a may also be provided in correspondence with the rear rolling roller 24.

1, 1a Rolling machine 10 Machine body 20 Rolling roller (wheel)
22 Front roller (front wheel)
24 Rear roller (rear wheel)
30, 30a: sliding contact device 40: mat brush 50: mat brush support member 52: brush fixing portion 54: holding pin 56: handle portion 56A: lower end 60, 70: lever member 62: engagement portion 64: operating portion 64a: first protruding portion 64b: second protruding portion 80: tension spring (spring member)
82 Rear end (one end)
84 Front end portion (other end)
92 Thumb

Claims (3)

The aircraft and
Wheels including front and rear wheels rotatably attached to the vehicle body;
a sliding contact device attached to the vehicle body corresponding to each of the front wheels and the rear wheels,
The sliding contact device is
Matte brush and
a mat brush support member including a brush fixing part fixed to the mat brush and swingably attached to the vehicle body, a retaining pin attached to the brush fixing part, and a handle part provided on the brush fixing part, the mat brush being configured to move toward and away from the wheel in response to the swinging of the brush fixing part;
a lever member attached to the machine body so as to be able to swing, the lever member including an engagement portion configured so that an engagement state with the retaining pin can be switched in response to the swinging of the lever member, the lever member configured so that when the engagement portion and the retaining pin are engaged with each other, the mat brush is held at a position spaced apart from the wheel, and when the engagement portion and the retaining pin are disengaged, the mat brush comes into contact with the wheel,
the lever member includes an operating portion that switches an engagement state between the engagement portion and the holding pin,
the operating portion terminates at a position above a lower end of the handle portion in a swing direction of the brush fixing portion when the engaging portion and the holding pin are engaged with each other, and includes a first protruding portion and a second protruding portion extending toward the handle portion,
the first protrusion is formed so as to terminate at a position forward of the handle portion with respect to a pivot direction of the brush fixing portion when the engaging portion and the holding pin are engaged with each other,
the second protrusion is formed so as to terminate at a position on the rear side of the handle portion with respect to the swing direction of the brush fixing portion when the engaging portion and the holding pin are engaged with each other.
A compaction machine characterized by the above. the sliding contact device further includes a spring member attached to the lever member at one end and to the brush fixing portion at the other end,
The rolling machine of claim 1, characterized in that the spring member is biased so that the mat brush contacts the wheel when the engagement portion and the retaining pin are disengaged, and the engagement portion is biased so that the engagement portion engages with the retaining pin when the brush fixing portion swings in a direction away from the wheel. The rolling machine according to claim 1, characterized in that the sliding contact device has two sets of the handle portion and the lever member spaced apart in the width direction of the machine body.

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