JP2001131906A - Sliding contact device for rolling compaction wheel of rolling compaction vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sliding contact device for a rolling compaction wheel of a rolling compaction vehicle, offering compact construction permitting smooth storage in a space between the lower part of the rear end of the body of the rolling compaction vehicle and the tread of the rear wheel while keeping a certain gap between the upper end of a contactor and the tread of the rear wheel without causing the contactor to be extended backward from the rear end of the rear wheel in no contact with the tread of a rolling pressure wheel, with the result that the remaining tread of the rear wheel is not larger than the radius of the rolling pressure wheel during rolling pressure of sediment on a subgrade and sediment is not accumulated between the upper ends of the contactor and a mounting member and the tread of the rolling pressure wheel. SOLUTION: A body 1, upper and lower like arms 31a, 31b and a pipe material 30 constitutes a quardric link mechanism and the link mechanism is a parallel link mechanism with two link arms 31a, 31b having equal length.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sliding contact device for a rolling wheel of a rolling vehicle.

[0002]

2. Description of the Related Art When asphalt paving a road or the like, when a pavement surface is rolled by a rolling wheel of a rolling vehicle, asphalt mixture adheres to a rolling surface (hereinafter referred to as a tread surface) of the rolling wheel. ,
If the rolling is further continued, the deposits impair the flatness and smoothness of the pavement surface, which adversely affects the pavement quality. For this reason, in general, a compacted vehicle is equipped with a spraying device that sprays water or a liquid agent toward a tread of a compacted wheel, and a water or asphalt adhesion preventive agent is continuously or intermittently applied during compacting work. By spraying the liquid agent on the compaction wheel, the asphalt mixture is prevented from adhering. For example, FIGS. 11A and 11B are side views of a rear end portion of a tire roller, which is a compacted vehicle, viewed from the left side of the vehicle. As shown in FIG. Water or a liquid agent is sprayed from the spray nozzle attached to the lower part toward the tread of the tire T.

In order to effectively prevent the asphalt mixture from adhering, it is necessary to form sprayed water or the like on the entire tread in a film form. For this reason, as shown in FIG. 11A, the sliding contact body 8 which is in pressure contact with the rotating tire T, slides on the tread surface of the tire T, and forms a water or liquid film on the tread surface.
The sliding member 83 is made of a material that can be impregnated with water or a liquid agent (for example, a fibrous body). An attachment member 84 is fixed to the sliding member 83, and an arm member 85 fixed to the attachment member 84 is rotatably supported by a bracket 86 attached to the vehicle body 81.
A tension spring 87 is stretched between the attachment member 84 and the vehicle body 81, and the sliding member 83 is pressed against the tread surface of the tire T by the tensile force of the tension spring 87.

As shown in FIG. 11 (a), in a normal rolling vehicle, the rear end of the vehicle body 81 or the tire T comes into contact with a structure such as a fence (not shown) when the vehicle retreats during rolling. The rear end 81R of the vehicle body 81 and the rear end of the tire T are located on substantially the same vertical plane, or the rear end 81R of the vehicle body 81 The sliding contact body 83, the mounting member 84, and the arm member 8
5 and the like are designed so that when the sliding contact body 83 is pressed against the tread surface of the tire T, it hardly projects rearward of the vehicle from the rear end of the tire T.

[0005]

The sliding contact body 83 is liable to be worn because it is pressed against the tire T, so that the rolling contact of the asphalt pavement is not performed. At the time of the rolling work of the roadbed or at the time of forwarding of the compacted vehicle, the sliding member 83 is manually rotated against the tensile force of the tension spring 87, and the tire T is rotated by the stopper 88 as shown in FIG. Is held at a position away from the tread surface. However, as described above, the sliding member 8
The following problem arises when the structure 3 and the mounting member 84 are fixed to the tip of an arm member 85 rotatably supported by a bracket 86 mounted on the vehicle body 81. (1) As shown in FIG. 11B, when the sliding contact body 83 is held at a position separated from the tread surface of the tire T, the rear end of the sliding contact device moves from the rear end of the rear tire (rear wheel) T. The vehicle is projected rearward by a considerable distance d, and the remaining amount of stepping when the soil and the roadbed are rolled is increased by the projection distance d.
Further, there is a possibility that the rear end of the sliding contact device collides with a structure such as a wall and is broken.

(2) When the sliding distance 83 is held as far as possible from the tread surface of the tire T and the projecting distance d is reduced as much as possible, as shown in FIG. The gap between the surface of the body 83 and the tread of the rear tire T is, for example, 20 mm at the upper end of the sliding body 83,
The gap at the lower end is 50 mm, especially at the upper end, and it must be reduced. However, this gap, especially the sliding body 8
When the gap at the upper end of 3 becomes smaller than a certain limit,
The earth and sand that has been adhered to the tread surface of the tire T and conveyed during the rolling of the roadbed of earth and the rolling vehicle is deposited between the upper end of the sliding member 83 and the mounting member 84 and the tread surface of the rear tire T.
Part of the accumulated earth and sand is caught between the tread surface of the rotating rear tire T and the sliding body 83, which causes the sliding body 83 to be worn.

In order to eliminate the problem as described in the above item (2), that is, to increase the gap between the upper end of the sliding member 83 and the tread surface of the rear tire T, for example, the arm member 85 is further rotated. When moved, the protruding distance d of the above item (1) further increases, and this promotes the problem of the above item (1). Further, in order to increase the gap between the upper end of the sliding member 83 and the tread surface of the rear tire T without increasing the rotation angle of the arm member 85, the arm member 85 may be lengthened. The sliding contact device does not fit in the space between the lower rear end portion of the vehicle body 81 and the tread of the rear tire T, and the problem cannot be solved.

The present invention solves the problems of the conventional sliding contact device for a rolling wheel of a rolling bearing vehicle, and has a compact structure, a lower portion of a rear end portion of a vehicle body of the rolling bearing vehicle and a rear wheel. When the sliding contact body is not in sliding contact with the tread surface, the sliding contact member hardly projects rearward from the rear end of the rear wheel. The gap between the upper end and the tread surface of the rear wheel or the front wheel is secured to a certain limit or more. It is an object of the present invention to provide a sliding contact device for a rolling contact wheel of a rolling contact vehicle in which earth and sand do not accumulate between the upper end of the contact body and the mounting member and the tread surface of the rolling contact wheel.

[0009]

A first aspect of the present invention which has solved the above-mentioned problems is to hold water or liquid agent and to slide on the tread surface of the rolling wheel so that water or liquid agent is applied to the tread surface of the rolling wheel. In a sliding contact device for a rolling wheel of a compaction vehicle in which a sliding member forming a film is attached to a mounting bracket fixed to a vehicle body, the sliding member is slidably contacted with and separated from the rolling wheel by 4. A sliding contact device for a rolling wheel of a compacted vehicle, wherein the sliding contact device is mounted on the mounting bracket via a joint link mechanism.

According to a second aspect of the present invention which has solved the above-mentioned problem, in the first aspect, the link mechanism is a parallel link mechanism having two link arms having the same length. And a sliding contact device for a rolling wheel of a rolling bearing vehicle.

(Operation) With the above construction, the mounting member and the sliding member are fixed to the tip of the arm member rotatably supported by the bracket mounted on the vehicle body as in the prior art. Even when the two link arms are rotated to separate the sliding contact body from the tread surface of the rolling wheel, attachment as a connecting rod attached to the distal ends of the two link arms via a rotation shaft. The member moves so as to move substantially parallel upward. Therefore, if the two link arms of the link mechanism are shortened, the sliding contact device hardly projects rearward from the rear end of the rear wheel.

Further, the gap between the sliding body and the tread surface of the rolling wheel can be made larger than that of the prior art, and the soil and sand between the upper end of the sliding body and the mounting member and the tread surface of the rolling wheel can be increased. Accumulation can be prevented. As a result, a part of the accumulated earth and sand is caught between the tread surface of the rotating compaction wheel and the sliding contact body, and there is no possibility that the sliding contact body is worn.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings, taking as an example the case where a rolling roller vehicle is a tire roller. FIG. 1 is a schematic side view of a tire roller according to the present invention, and FIG. 2 shows an attached state of a sliding contact device on a rear wheel side according to the first embodiment of the present invention.
FIG. 3B is a side view, FIG. 3B is a rear view, FIG. 3 is a partial perspective view of the rear wheel side sliding contact device, and FIG. 4 is a diagram for explaining the operation and operation of the rear wheel side sliding contact device. a-1) is a plan view showing the movement of an air cylinder or the like which is a moving means when the sliding contact device is brought into sliding contact, and (a-2) is a plan view of the sliding contact device when the sliding contact device is brought into sliding contact. (B-1) is a side view showing the movement, (b-1) is a plan view showing the movement of an air cylinder or the like as a moving means when the sliding contact device is separated from the sliding contact position, and (b-2) is a sliding contact device. It is a side view which shows the movement of the sliding contact device when it separates from the contact position.

In FIG. 1, a driver seat C is disposed above the vehicle body 1 and a plurality of (in this example, three front wheels and four rear wheels) pressure rolling wheels (hereinafter, referred to as tire wheels R) are provided. T) are arranged at equal intervals in the vehicle width direction. The tire roller R of this example is of a front wheel steering / rear wheel drive system, and each tire T of the front wheel is rotatably supported by a frame 2 surrounding the front, rear, left and right of the center tire T. The frame 2 is supported from above by a yoke 3 that rotates in conjunction with the steering wheel S. When a steering cylinder (not shown) operates in response to the steering of the steering wheel S, the tire T rolls. It is designed to steer.

As shown in FIG. 1, the tire roller R slides on the rear surface of the rear wheel and the rear portion of the front wheel, and slides on the tread surface of the tire T to form a water or liquid film on the tread surface of the tire T. The rear sliding contact device 5 and the front sliding contact device 6 provided with the contact body and the supporting means thereof, and the respective sliding contact members 23 of the rear sliding contact device 5 and the front sliding contact device 6 are mounted on the tread surface of the tire T. There is a rear moving means 7 and a front moving means 8 for moving between a contact position and a distant position. In addition,
In the present invention, as will be described later, it is also possible to omit the moving means 7 and 8 and move each of the rear sliding device 5 and the front sliding device 6 manually.

The sliding contact body 23 is formed by, for example, forming a non-woven fabric made of artificial fibers into a rectangular parallelepiped shape, and bonding numerous innumerable fine abrasive grains to the fibers with an adhesive. As shown in FIGS. 2B and 3, the longitudinal dimension of the tire T is formed to be substantially the same as the width dimension of the tire T so as to be in sliding contact with the tire T. The sliding body 23 has a base 2 on its back, that is, the side that does not contact the tread surface of the tire T.
7 is fixed by an adhesive or heat welding. The base 27 is made of a thin plate made of metal or resin and has high rigidity, and is slightly bent on both sides at the center in the width direction. A plurality of attachment members 28 made of an elastic material such as a polymer material are attached to the base 27 via a bracket (not shown), and one end is opened in a direction perpendicular to the width direction of the tire T. The holding groove 28a is formed at the other end with a holding groove 28b that opens in the normal direction of the tread surface of the tire T.

Next, the support means for supporting the sliding body 23 with the vehicle body will be described. Rear sliding contact device 5 on rear wheel side
In FIG. 2B, as shown in FIGS. 2B and 3, the sliding members 23 slidingly in contact with the pair of right and left tires T are connected to the holding grooves 28a, 28 by pipe members 30 which are bent in a rectangular shape.
They are connected to each other at the site b. Upper and lower link arms 31 of equal length are parallel to each other at the center of the pipe material 30.
A, 31a, 31b, and 31b are rotatably supported at the respective distal ends via bearings (not shown). The base ends of the upper and lower link arms 31a, 31b are rotatably supported by the upper and lower brackets 32a, 32b attached to the vehicle body 1 via a rotation shaft 32p. In addition,
The vehicle body 1, the upper and lower link arms 31a and 31b, and the pipe member 30 constitute a four-bar linkage, and this link mechanism further comprises two link arms 31 having the same length.
a, 31b.

Next, the moving means 7 for moving the sliding contact member 23 on the rear wheel side will be described. The upper link arm 31
The other end of the connection arm 33 whose one end is rotatably supported via a rotation shaft at the distal end portion a is rotatably supported at the front end of the connection arm 34 via a pin 33a. The base end of the connecting arm 34 is connected to the left and right brackets 3 fixed to the vehicle body 1.
It is fixed to a support shaft 36 extending in the vehicle width direction between the five shafts and supported rotatably and immovably in the vehicle width direction via a bearing. One end of a connection arm 37 is fixed to the center of the support shaft 36, and the other end of the connection arm 37 is
8, and is rotatably connected to the distal end of the connecting rod 39. The proximal end of the connecting rod 39 is connected to the connecting arm 4 via a pin 40.
1 is rotatably connected to the front end. Connecting arm 41
Are the upper and lower brackets 42, 4 fixed to the vehicle body 1.
2 a support shaft 4 rotatably held via a bearing (not shown)
3 is fixed to one end. A base end of a connecting arm 44 is fixed to the other end of the support shaft 43, and a distal end of the connecting arm 44 is rotatably connected to a cylinder rod 46 of an air cylinder 47 via a pin 45. The base end of the air cylinder 47 on the side opposite to the cylinder rod is rotatably held by front and rear brackets 48, 48 fixed to the vehicle body 1 via pins (not shown).

In general, the brake device of the tire roller is often an oil brake with a brake booster. In this case, the tire roller has an air tank for supplying compressed air to the brake booster (air master). . The actuator of the moving means 7 in the present embodiment uses the compressed air in the air tank, and has the configuration in which the air cylinder 47 is provided as an actuator as described above. However, the actuator is not limited to the air cylinder 47, but may be a hydraulic cylinder.

The air cylinder 47 is configured so that the cylinder rod 46 is extended when compressed air is not supplied by the urging force of a compression spring 46b fitted to the cylinder rod 46. Reference numeral 50 denotes a tension spring, and when the cylinder rod 46 contracts,
Is pressed against the tread surface of the tire T, and the pipe member 30 is supported between the lower link arms 31b, 31b.
And a case 51 of a driving motor of the tire T.

The operation and action of the rear wheel side sliding contact device 5 and the moving means 7 configured as described above will be described. As described above, the air cylinder 47 is provided with a compression spring 46b fitted externally to the cylinder rod 46 as shown in FIG.
, The cylinder rod 46 is configured to be in an expanded state when the compressed air is not supplied.
Therefore, when the cylinder rod 46 shifts from the retracted state shown in FIG. 4 (a-1) to the extended state shown in FIG. 4 (b-1), as shown in FIG. The connecting arm 44 connected to the tip of the cylinder rod 46 via the pin 45 rotates clockwise as viewed from above, and in conjunction with this movement, the support shaft 43 and the connecting arm 41 also rotate clockwise as viewed from above. To rotate. Then, the connecting rod 39 is pulled in the forward direction of the vehicle, and in conjunction with the movement, the connecting arm 37 rotates counterclockwise as viewed from the left side of the vehicle. As a result, the connecting arm 34 rotates counterclockwise as viewed from the left side of the vehicle, and in conjunction with this movement, the connecting arm 3
3 is pulled obliquely upward. Then, two pairs of upper and lower link arms 31a, 31 having their ends connected by a pipe member 30.
b overcomes the tensile force of the tension spring 50 and rotates counterclockwise as viewed from the left side of the vehicle, and the mounting member 28 and the base 27
The sliding member 23 is held at a position separated from the tread surface of the tire (rear wheel) T by a predetermined distance.

Incidentally, the sliding member 23 in the present embodiment is
The gap between the tire and the tread surface of the tire T is 44
mm, and 32 mm at the lower end. In the example of the conventional sliding contact device shown in FIG.
m, the gap is remarkably large, especially at the upper end, as compared with the case of 50 mm at the lower end. For this reason, accumulation of earth and sand between the upper ends of the sliding contact body 23, the base 27, and the mounting member 28 and the tread surface of the tire T can be prevented. As a result, part of the accumulated earth and sand is caught between the tread surface of the rotating tire T and the sliding contact member 23, and does not cause wear of the sliding contact member 23.

Further, the rear end of the tire T at the rear end of the sliding contact device 5 does not protrude rearward of the vehicle at all, and as shown in FIG.
In the example of the conventional rear-wheel-side sliding contact device shown in (b), the amount of protrusion is significantly smaller than that when d = 80 mm, and is substantially negligible. As a result,
There is no possibility that the remaining stepping becomes considerably larger than the radius of the rear wheel, or that the sliding contact device protruding rearward from the rear end of the rear wheel collides with a structure such as a wall and is damaged.

Next, when air is supplied to the air cylinder 47, the cylinder rod 46 is extended from the state shown in FIG. 4B-1 to the cylinder rod 46 shown in FIG. 46 retracts by overcoming the urging force of the compression spring 46b. Then, a pin 45 is attached to the tip of the cylinder rod 46.
The connecting arm 44, the tip of which is connected via the, rotates counterclockwise as viewed from above, and in conjunction with this movement, the support shaft 43 and the connecting arm 41 also rotate counterclockwise as viewed from above. Then, the connecting rod 39 is pulled in the rearward direction of the vehicle,
In conjunction with the movement, the connecting arm 37 rotates clockwise as viewed from the left side of the vehicle. As a result, the connecting arm 34 rotates clockwise as viewed from the left side of the vehicle, and in conjunction with this movement, the connecting arm 33 is pushed obliquely downward. Then, two pairs of upper and lower link arms 31a, 31b, the ends of which are connected by the pipe member 30, rotate clockwise as viewed from the left side of the vehicle by the pushing force of the connecting arm and the pulling force of the pulling spring 50, The mounting member 28, the base 27, and the sliding body 23 move toward the tread surface of the tire (rear wheel) T, and the sliding body 23 is pressed against the tread surface of the tire (rear wheel) T.

Next, the front wheel side sliding contact device 6 and its moving means 8 will be described below with reference to the accompanying drawings. 5A and 5B show a mounting state of the sliding contact device on the front wheel side according to the first embodiment of the present invention, wherein FIG.
6B is a rear view, FIG. 6 is a partial perspective view of the front wheel side sliding contact device, and FIG. 7 is a view for explaining the operation and operation of the front wheel side sliding contact device. Drawing showing the movement of the sliding contact device and its moving means when the sliding contact with the tread of the tire,
(B) is a drawing showing the movement of the sliding contact device and its moving means when the sliding contact device is separated from the sliding contact position.

First, the support means for supporting the sliding body 23 with the vehicle body will be described. In the front sliding contact device 6 on the front wheel side, as shown in FIG. 5B, since the number of the tires T is three as described above, as shown in FIG. 5B and FIG. The sliding contact member 23 slidingly contacting the tire T and the central tire T is connected by a pipe material 30 formed in a rectangular shape as in the case of the rear wheel side, and the sliding contact member of the remaining one tire T is connected. Reference numeral 23 designates a pipe member 60 bent in a U-shape. These pipe materials 30,
The upper ends of upper and lower link arms 61a and 61b having the same length and being parallel to each other are rotatably attached to 60, respectively. On the other hand, brackets 62 are respectively fastened to the upper surfaces of the left and right portions of the frame body 2 supporting the tire T by bolts.
The base ends of each of 1a and 61b are upper and lower brackets 63, respectively.
a, 63b and rotatable shafts 64a, 64b. The upper and lower brackets 63
a, 63b, the upper and lower link arms 61a, 61b, and the pipe member 30 or the pipe member 60 constitute a four-node link mechanism. The link mechanism further includes two link arms 61a, 61b having the same length. A parallel link mechanism is provided.

Next, the moving means 8 for moving the front wheel side sliding contact device 6 will be described. The upper link arm 61
The other end of the connecting rod 65, which is rotatably supported at one end on the other end of the rotating shaft 64a via a pin 61p, is rotatable at the tip of a connecting arm 66 via a pin 66p. It is pivoted. The base end of the connecting arm 66 extends in the vehicle width direction between the left and right bearings 67 fixed to the vehicle body 1,
Is fixed to a support shaft 68 supported rotatably and immovably in the vehicle width direction. At one end of the support shaft 68,
One end of the connection arm 69 is fixed, and the connection arm 6
The other end of 9 is rotatably connected to the tip of a cylinder rod 71 of an air cylinder 72 via a pin 70. The proximal end of the air cylinder 72 on the side opposite to the cylinder rod is a front and rear bracket 73 fixed to the vehicle body 1 via a pin (not shown).
73 rotatably held.

As shown in FIG. 5A, the air cylinder 72 has a compression spring 71 fitted externally to a cylinder rod 71.
When the compressed air is not supplied, the cylinder rod 71 is extended by the urging force of b. Reference numeral 74 denotes a tension spring, and the cylinder rod 7
This is for pressing the sliding body 23 against the tread surface of the tire T when 1 is retracted, and between the pipe member 30 rotatably supported between the link arms 61b and 61b and the bracket 62. It is stretched.

The operation and operation of the front wheel side sliding contact device 6 and the moving means 8 configured as described above will be described below. As described above, the air cylinder 72 is, as shown in FIG.
When the compressed air is not supplied, the cylinder rod 71 is extended by the biasing force of 1b. Therefore, when the cylinder rod 71 shifts from the retracted state shown in FIG. 7A to the extended state shown in FIG. 7B, as shown in FIG. A connecting arm 69 connected via a pin 70 rotates clockwise as viewed from the left side of the vehicle, and in association with this movement, the support shaft 68 and the connecting arm 66 similarly rotate clockwise as viewed from the left side of the vehicle. Rotate. Then, FIG.
As shown in (b), the connecting rod 65 is pushed obliquely downward. Then, two pairs of upper and lower link arms 61a, 61b whose distal ends are connected by pipe members 30, 60 are connected to tension springs 74.
To rotate counterclockwise as viewed from the left side of the vehicle, and the mounting member 28, the base 27, and the sliding member 23 are held at a predetermined distance from the tread surface of the tire (front wheel) T. Is done.

The sliding contact device 6 on the front wheel side does not have a problem that the remaining stepping becomes large because it protrudes rearward from the rear end of the tire (front wheel) T like the sliding contact device 5 on the rear wheel side. ,
The gap between the sliding body 23 and the tread surface of the tire (front wheel) T in the present embodiment is 40 mm at the upper end of the sliding body 23 and 33 mm at the lower end. , This gap is 25mm at the upper end and 30m at the lower end
m, the gap is particularly large on the upper end side. For this reason, sediment can be prevented from being deposited between the upper ends of the sliding body 23, the base 27, and the mounting member 28 and the tread surface of the tire (front wheel) T. As a result, the tread surface of the tire (front wheel) T on which a part of the accumulated earth and sand rotates and the sliding contact body 2
3, the possibility of causing abrasion of the sliding contact body 23 is eliminated.

Next, when air is supplied to the air cylinder 72, as shown in FIG. 7 (a), the cylinder rod 71 contracts against the urging force of the compression spring 71b and contracts. Then, the connecting arm 69 having the tip connected to the tip of the cylinder rod 71 via the pin 70 rotates counterclockwise as viewed from the left side of the vehicle, and in conjunction with this movement, the support shaft 68 and the connecting arm 66 also move to the vehicle. Turns counterclockwise when viewed from the left side of the. Then, as shown in FIG. 7A, the connecting rod 65 is pulled obliquely upward. Then, the pipe member 30 or the pipe member 60
Two pairs of upper and lower link arms 61a, the ends of which are connected by
61b rotates clockwise as viewed from the left side of the vehicle by the tensile force of the tension spring 74, and the mounting member 28, the base 27, and the sliding member 23 move in the direction of the tread surface of the tire (front wheel) T,
The sliding body 23 is pressed against the tread surface of the tire (front wheel) T.

Next, a second embodiment of the present invention will be described below with reference to the accompanying drawings. 8A and 8B show an attached state of the sliding contact device on the rear wheel side of the second embodiment of the present invention, wherein FIG. 8A is a side view, FIG. 8B is a rear view, and FIG. 9 is a second embodiment of the present invention. Operation of the sliding device on the rear wheel side
It is a figure explaining an effect | action, (a) is a drawing which shows the state of a sliding contact device when a sliding contact body is separated from a sliding contact position, (b) made the sliding contact body make sliding contact with the tread surface of a tire. It is a drawing showing a state of a sliding contact device at the time.

The sliding device 5 on the rear wheel side in the present embodiment.
As shown in FIG. 8 and FIG. 9, the configuration of the sliding contact device 5 on the rear wheel side in the first embodiment described with reference to FIG. 2 and FIG. Is the same. (1) The moving means 7 of the rear sliding device 5 is not attached. (2) A stopper 52 for limiting upward rotation of the upper link arm to a predetermined position is fixed to the top of the bracket 32a so as to extend in the vehicle width direction. (3) A stopper rod 53 provided with a claw portion 53a at a rear portion at a center portion in a longitudinal direction for holding the sliding contact body 23 at a position separated from a tread surface of the tire T is used as a cover 51 of a driving device for a rear wheel.
The base end of the bracket 54 is held rotatably in a vertical plane. Also, the lower link arm 3
A stopper receiving pin 55 extending in the vehicle width direction for engaging with the claw portion 53a of the stopper rod 53 is fixed in the middle of 1b.

A method of manually moving the rear sliding device 5 according to the present embodiment configured as described above will be described.
A. When the sliding body 23 is brought into sliding contact with the tread surface of the tire (rear wheel) T, holding means for supporting the sliding body 23 (the mounting member 28, the pipe member 30 and the like) from the state shown in FIG. Pull up until the upper link arm 31a hits the stopper 52. Hold the stopper rod 53 by hand and rotate it slightly forward until the claw portion 53a comes off the stopper receiving pin 55. Support means for the sliding member 23 (the mounting member 28 or the pipe member 30)
Etc.). Then, the sliding contact body 23 is pressed against the tread surface of the tire (rear wheel) T by the own weight of the sliding contact device 5 and the tensile force of the tension spring 50 as shown in FIG.

B. When the sliding body 23 is separated from the tread surface of the tire (rear wheel) T From the state shown in FIG. 9B, the supporting means (the mounting member 28, the pipe member 30, etc.) of the sliding body 23 is held by hand and the upper link is held. Pull up until the arm 31a hits the stopper 52. In the state shown in the section, the stopper rod 53 falls slightly backward by its own weight. Support means for the sliding member 23 (the mounting member 28 or the pipe member 30)
Etc.). Then, the stopper receiving pin 55 is attached to the claw portion 53a of the stopper rod 53 by the weight of the sliding contact device 5 and the tensile force of the tension spring 50 as shown in FIG.
Are engaged, and the sliding member 23 (not shown) is connected to the tire (rear wheel) T
(Not shown) at a position away from the tread surface.

The rear sliding contact device 5 of the present embodiment configured as described above has the same functions and effects as those of the rear sliding contact device 5 of the first embodiment. Since there is no need for complicated moving means, there is also an effect that design / manufacturing costs and maintenance costs can be reduced.

Next, a front wheel side sliding contact device 6 according to a second embodiment of the present invention will be described below with reference to the drawings. 10A and 10B show a mounting state of a sliding contact device on a front wheel side according to a second embodiment of the present invention, wherein FIG.
(B) is a rear view.

The sliding contact device 6 on the front wheel side in the present embodiment.
As shown in FIG. 10, the configuration is the same as the configuration of the front-wheel-side sliding contact device 6 in the first embodiment described with reference to FIGS. 5 and 6 except for the following points. (1) The moving means 8 of the front sliding device 6 is not attached. (2) A stopper 75 for limiting upward rotation of the upper link arm to a predetermined position is fixed to the top of the bracket 63a so as to extend in the vehicle width direction. (3) A stopper rod 76 having a claw portion 76a at a rear portion in a longitudinal center portion for holding the sliding contact body 23 at a position separated from the tread surface of the tire T is fixed to the frame 2 via a bracket 62. The bracket 77 has its base end rotatably held in a vertical plane. A stopper receiving pin 78 extending in the vehicle width direction for engaging with the claw portion 76a of the stopper rod 76 in the middle of the lower link arm 61b.
Has been fixed.

The method for manually moving the front sliding device 6 of the present embodiment configured as described above is substantially the same as the method for moving the rear sliding device described above, and a description thereof will be omitted.
Further, the front sliding contact device 6 according to the present embodiment configured as described above is different from the front sliding contact device 6 according to the first embodiment.
In addition to the operation and effect similar to the operation and effect of (1), since there is no need for complicated moving means, there is also an effect that design / manufacturing costs and maintenance costs can be reduced.

[0040]

The sliding contact device for a rolling wheel of a compacted vehicle according to the present invention has a compact structure and can be sufficiently accommodated in the space between the lower portion of the rear end of the compacted vehicle and the tread surface of the rear wheel. Even when the sliding body does not slide on the tread surface of the rolling contact wheel, it hardly projects rearward from the rear end of the rear wheel, and the gap between the upper end of the sliding body and the tread surface of the rear wheel or the front wheel. As a result, the rear contact of the rear wheel when rolling the soil and the roadbed is not increased beyond the radius of the rolling wheel, and the upper end of the sliding contact body and the mounting member and the rolling wheel are secured. Sediment does not accumulate between the treads.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a tire roller according to the present invention.

FIG. 2 shows a mounting state of a sliding contact device on a rear wheel side according to the first embodiment of the present invention, wherein (a) is a side view,
(B) is a rear view.

FIG. 3 is a partial perspective view of the rear wheel-side sliding contact device according to the first embodiment of the present invention.

FIG. 4 is a view for explaining the operation and action of the rear wheel-side sliding contact device according to the first embodiment of the present invention, wherein (a-1) shows the state when the sliding contact device is brought into sliding contact; A plan view showing the movement of an air cylinder or the like as a moving means, (a-2) is a side view showing the movement of the sliding contact device when the sliding contact device is brought into sliding contact, (b-1)
Is a plan view showing the movement of an air cylinder or the like as a moving means when the sliding contact device is separated from the sliding contact position, and (b-2) is a plan view of the sliding contact device when the sliding contact device is separated from the sliding contact position. It is a side view showing movement.

5A and 5B show a mounting state of the sliding contact device on the front wheel side according to the first embodiment of the present invention, wherein FIG.
(B) is a rear view.

FIG. 6 is a partial perspective view of the front-wheel-side sliding contact device according to the first embodiment of the present invention.

FIGS. 7A and 7B are diagrams for explaining the operation and action of the front wheel side sliding contact device according to the first embodiment of the present invention, and FIG. 7A illustrates a state in which the sliding contact device is brought into sliding contact with the tread surface of the tire. FIG. 3B is a view showing the movement of the sliding contact device and its moving means, and FIG. 4B is a drawing showing the movement of the sliding contact device and its moving means when the sliding contact device is separated from the sliding contact position.

8A and 8B show a mounting state of a sliding contact device on a rear wheel side according to a second embodiment of the present invention, wherein FIG.
(B) is a rear view.

FIG. 9 is a view for explaining the operation and action of the sliding contact device on the rear wheel side according to the second embodiment of the present invention;
FIG. 2 is a drawing showing a state of the sliding contact device when the sliding contact device is separated from the sliding contact position, and FIG. 2B is a drawing showing a state of the sliding contact device when the sliding contact device is brought into sliding contact with the tread surface of the tire. .

10A and 10B show a mounting state of a sliding contact device on a front wheel side according to a second embodiment of the present invention, wherein FIG.
(B) is a rear view.

11A and 11B are side views illustrating an example of a conventional sliding contact device on the rear wheel side of a roller-pressed vehicle, wherein FIG. 11A illustrates a state in which the sliding contact member is pressed against a tread surface of a tire, and FIG. Shows a state in which is separated from the tread of the tire.

[Explanation of symbols]

 R Tire roller T Tire 1 Body 5 Rear sliding device 6 Front sliding device 7,8 Moving means 23 Sliding body 27 Base 28 Mounting member 30 Pipe material 31a Upper link arm 31b Lower link arm 32a Upper bracket 32B Lower bracket 46 Cylinder rod 46b Compression spring 47 Air cylinder 50 Tension spring 52 Stopper 53 Stopper rod 53a Claw 54 Bracket 55 Stopper receiving pin 60 Pipe material 61a Upper link arm 61b Lower link arm 62 Bracket 63a Upper bracket 63b Lower bracket 71 Cylinder rod 71b Compression spring 72 Air cylinder 74 Tension spring 75 Stopper 76 Stopper rod 76a Claw 77 Bracket 78 Stopper receiving pin

Continued on the front page (72) Inventor Hiroshi Hisa 2626 Takayanagi, Katsuhashi-cho, Kita-Katsushika-gun, Saitama F-term (reference) 2D052 AA03 AC01 BB05 CA21 CA24 3D025 AA09 AB09 AC02 AD18

Claims (2)

[Claims] 1. A sliding member which holds water or liquid agent and slides on a tread surface of a rolling wheel and forms a film of water or liquid agent on the tread surface of the rolling wheel is attached to a mounting bracket fixed to a vehicle body. A sliding contact device for a rolling wheel of a rolling compact vehicle, wherein the sliding contact body is attached to the mounting bracket via a four-node link mechanism so as to be able to slide on and separate from the rolling bearing wheel. A sliding contact device for the rolling wheels of pressure vehicles. 2. The sliding contact device according to claim 1, wherein the link mechanism is a parallel link mechanism having two link arms having the same length.