JPH0522264U - Body refraction type vehicle - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a body refraction type vehicle having a simple structure and preventing theft. A vehicle body refraction system that includes a front vehicle 6 that forms a front half of the vehicle and a rear vehicle 8 that forms a rear half of the vehicle and that steers the front vehicle 6 by rotating the front vehicle 6 with respect to the rear vehicle 8. In the type vehicle, a rotation blocking device 21 for blocking the rotation of the front vehicle 6 with respect to the rear vehicle 8 at least in the steering release direction in a state where the front vehicle 6 is rotated by a predetermined angle with respect to the rear vehicle 8. Prepare

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a vehicle body refraction type vehicle in which a vehicle is divided into front and rear and a front vehicle is rotated with respect to a rear vehicle for steering, and particularly, the vehicle is protected against theft.

[0002]

[Prior Art]

 Conventionally, a vehicle body refraction type vehicle represented by a wheel loader is configured as shown in FIG. 6, for example. In the figure, a body refraction type vehicle 1 includes a front vehicle 6 that constitutes a front half of the vehicle and has working devices such as a lift arm 2 and a bucket 3 and wheels 5, and a rear portion that constitutes a rear half of the vehicle and has wheels 7. It is composed of a vehicle 8. The front vehicle 6 and the rear vehicle 8 are rotatably connected to each other by a center pin 9, and the rear vehicle 8 is provided with the base end portions of a pair of steering cylinders 11, 12 and the front vehicle 4 is provided with respective steering cylinders. Piston rods 11a and 12a of 11 and 12 are connected to each other, and by extending and contracting the steering cylinders 11 and 12, the front vehicle 6 is rotated with respect to the rear vehicle 8 for steering.

Brackets 6a and 8a are respectively provided on one side surface of the front vehicle 6 and the same side surface of the rear vehicle 8 so as to project therefrom, and a lock is provided between the brackets 6a and 8a. When the bar 13 is bridged and fixed, the front vehicle 6 and the rear vehicle 8 are prevented from rotating in a state where the vehicle can go straight as shown (steering release state). As a result, for example, at the time of inspection and repair of the vehicle body, the worker can safely work without causing a dangerous situation in which the worker is caught between the front vehicle 6 and the rear vehicle 8 and injured.

When the lock bar 13 is not used, the lock bar 13 can be rotated around the bracket 8a as shown by an arrow A, and the tip end of the lock bar 13 is located at the rear end side of the rear vehicle 8. It can be accommodated by being fixed to another bracket 8b protruding from the side surface. As a result, the front vehicle 6 and the rear vehicle 8 can rotate with respect to each other, and the vehicle body bending vehicle 1 can freely steer.

[0005]

[Problems to be solved by the device]

 By the way, in recent years, theft of such a body refraction type vehicle 1 has become a problem. That is, vehicles of this type are used at work sites such as civil engineering work, but when construction is not performed, they are usually parked as they are brought into the site, and at that time, large trucks are used at the work site. Theft is frequently caused by carrying the vehicle into a car and driving a refraction-type vehicle to load it onto a truck bed and carry it away. This kind of theft is caused not only when the lock bar 13 of the vehicle refraction type vehicle 1 is in a housed state and is steerable, but also when the front end of the lock bar 13 is fixed to the bracket 6a of the front vehicle 6. Even in the meantime, since it is possible to drive the vehicle straight and place it on the bed of a large truck, it is not possible to avoid theft with the conventional lock bar 13, and there has been a demand for antitheft measures among users.

An object of the present invention is to provide a body refraction type vehicle having a simple structure and preventing theft.

[0007]

[Means for Solving the Problems]

 The present invention will be described with reference to FIG. 1 showing an embodiment. The present invention includes a front vehicle 6 forming a front half of the vehicle and a rear vehicle 8 forming a rear half of the vehicle. It is applied to a vehicle body refraction type vehicle that steers by rotating the front vehicle 6. The front vehicle 6 is provided with a rotation blocking device 21 that blocks rotation of the front vehicle 6 with respect to the rear vehicle 8 in at least the steering release direction in a state where the front vehicle 6 is rotated by a predetermined angle. This solves the above problem. Further, in particular, in the invention of claim 2, the rotation preventing device 21 is provided for the brackets 22 and 23 protruding from the front vehicle 6 and the rear vehicle 8, respectively, and the bracket having one of the base ends. A lock that is rotatably mounted, has a straight-movement-fixing pin hole 24a formed on the tip side, and has a swivel-fixing pin hole 24b that is formed on the base end side of the straight-movement fixing pin hole 24a. The bar 24, the fixing pin 25 inserted into the pivot fixing pin hole 24b of the lock bar 24 and the shaft hole of the other bracket, and the locking device for preventing the inserted fixing pin 25 from coming off. And 28. Further, in the invention of claim 3, as shown in FIG. 4, the rotation preventing device 31 is provided with brackets 52 and 53 projecting from the front vehicle and the rear vehicle, respectively, and the shaft hole of one of the brackets at one end. Has a first hook 34a that is inserted through the second hook 34a, a second hook 34b for fixing straight ahead near the tip of the other end, and a swivel fixing portion between the hooks 34a, 34b. The bar-shaped hook 34 having the third hook 34c formed therein and the first hook 34a and the third hook 34c are prevented from coming off when both brackets 52 and 53 are inserted. It is composed of a locking device 28. Further, in the invention of claim 4, the predetermined angle is the maximum turning angle.

[0008]

[Action]

 The rotation blocking device 21 blocks the rotation of the front vehicle 6 with respect to the rear vehicle 8 at least in the steering release direction in a state where the front vehicle 6 is rotated by a predetermined angle with respect to the rear vehicle 8. If so, it becomes impossible to move the vehicle 20 straight, so it cannot be placed on a luggage carrier such as a truck, and theft can be prevented. Further, in particular, in Claim 2, the front vehicle 6 is rotated by a predetermined angle, the pin 25 is inserted into the pivot fixing pin hole 24b of the lock bar 24 and the shaft hole of the bracket, and is locked by the locking device 28. For example, as described above, the rotation of the front vehicle 6 with respect to the rear vehicle 8 is prevented. Further, in claim 3, if the first hook 34a and the third hook 34c of the bar-shaped hooking tool 34 are inserted through the respective brackets and locked by the locking device 28 in this state, the front vehicle 6 Rotation with respect to the rear vehicle 8 is blocked. Still further, in claim 4, since the rotation is blocked when the front vehicle 6 is rotated by the maximum turning angle, the turning angle between the front vehicle 6 and the rear vehicle 8 is finely adjusted. Even if it does not, the rotation can be prevented by the rotation preventing device 21 or 31, and the work is facilitated.

It should be noted that, in the section of means and action for explaining the configuration of the present invention, the drawings of the embodiments are used to make the present invention easy to understand, but the present invention is not limited to the embodiments. ..

[0010]

【Example】

 Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to FIGS. FIG. 1 shows a first embodiment of a body refraction type vehicle to which the present invention is applied. Since the vehicle body refraction type vehicle 20 has the same configuration as the vehicle body refraction type vehicle 1 of FIG. 6 except for the structure of the rotation preventing device 21, common portions are denoted by the same reference numerals, and differences are mainly shown. Explained.

In the figure, a rotation preventing device 21 includes a bracket 22 protruding from the left side surface of the front vehicle 6 in the figure, a bracket 23 protruding from the left side surface of the rear vehicle 8, and these brackets 22. , 23, and a padlock 28 shown in FIG.

FIG. 2 is an enlarged plan view showing the rotation preventing device 21, and FIG. 3 is a schematic side view thereof. In the figure, a pair of brackets 22 are vertically formed on the side surface of the front vehicle 6 at a predetermined interval from each other as shown in FIG. 3, and the shaft holes 22a, 22a are formed at the centers of these brackets 22, 22. Are formed. Similarly, a pair of upper and lower brackets 23 formed on the side surface of the rear vehicle 8 are also provided so as to project vertically, and a certain interval is provided between them, and the center of each bracket 23, 23 is shown in the figure. Axial holes 23a, 23a are formed at positions overlapping in the vertical direction.

The lock bar 24 is made of a long and sturdy rod-shaped member, and can be bridged between the brackets 22 and 23 as shown in FIG. The base end of the lock bar 24 is rotatably fixed between a pair of upper and lower brackets 23, 23 via a fixing pin 27, and a retaining plate 29 is welded to the tip of the fixing pin 27. .. Further, a straight-movement fixing pin hole 24a is formed in the tip end portion of the lock bar 24, and this pin hole 24a is formed by the front vehicle 6 with respect to the rear vehicle 8 as shown by the solid line in FIG. When the steering wheel is not steered (straight ahead), it overlaps the shaft hole 22a of the bracket 22. Therefore, if the pin is inserted into the shaft hole 22a and the pin hole 24a in this state, the front vehicle 6 and the rear vehicle 8 are fixed in a straight traveling state. The worker can work safely without causing a dangerous situation in which the worker is caught between the front vehicle 6 and the rear vehicle 8 and is injured.

On the other hand, a rotation fixing pin hole 24b is formed in a portion of the lock bar 24 closer to the base end portion than the straight-movement fixing pin hole 24a, and the pin hole 24b has two points in FIG. As indicated by the chain line, when the front vehicle 6 makes the most left turn with respect to the rear vehicle 8 (turning angle θ), it overlaps with the shaft hole 22a of the bracket 22. In this state, as shown in FIG. 3, the fixing pin 25 is inserted into the shaft hole 22a and the pin hole 24b, and a padlock 28 is attached to the key hole formed at the tip of the fixing pin 25. As a result, the front vehicle 6 and the rear vehicle 8 are fixed in the maximum turning state and are prevented from turning in the steering release direction from that state.

As a result, the vehicle 20 is fixed in a state where it is greatly bent near the center thereof, and it becomes impossible to go straight. Therefore, even if the vehicle 20 can be started, this can be run and the truck It is impossible to place it on a cargo bed such as a car and it is possible to prevent it from being stolen by such a method. Further, particularly in this embodiment, since the shaft hole 22a and the pin hole 24b are overlapped with each other and the rotation preventing device 21 can prevent the rotation of the front vehicle 6 by the maximum turning angle θ, the front vehicle 6 can be prevented. Since it is not necessary to finely adjust the turning angle between the rear vehicle 8 and the rear vehicle 8 to align the shaft hole 22a with the pin hole 24b, the work becomes easy. Further, in this embodiment, since the lock bar used conventionally is also used, the rotation preventing device can be constructed extremely easily and inexpensively.

In FIG. 2, when the lock bar 24 is not used, the free end side of the lock bar 24 is rotated in the rearward direction of the vehicle, and the straight-movement fixing pin hole 24 a is provided on the rear side surface of the rear vehicle 8. It can be stored by fixing it to the bracket 26. In the above, an example using a conventional lock bar has been shown, but the present invention is not limited to this, and a dedicated device may be used.

FIG. 4 is a schematic perspective view of an essential part showing a second embodiment of the vehicle body refraction type vehicle to which the present invention is applied. In the drawing, a bar-shaped hooking device 34 is used in the rotation preventing device 31 in the present embodiment, and the bar-shaped hooking device 34 includes first to third hooks 34a, 34b, 34c. Is projected. In a state where the front vehicle 6 is not steered with respect to the rear vehicle 8, the distance between the brackets 52 and 53 becomes equal to the distance between the first and second hooks 34a 1 and 34b 2, and thus the first hook 34a 1 Is inserted into the shaft hole 53a of the bracket 53 and the second hook 34b is inserted into the shaft hole 52a of the bracket 52, the vehicle can be fixed in a straight traveling state.

On the other hand, when the front vehicle 6 turns to the left with respect to the rear vehicle 8, the distance between the brackets 52 and 53 becomes equal to the distance between the first and third hooks 34a and 34c. Therefore, as shown in FIG. 5, the first hook 34a is inserted into the shaft hole 53a of the bracket 53, the third hook 34c is inserted into the shaft hole 52a of the bracket 52, and the third hook 34a is inserted. By attaching, for example, a padlock 28 to the keyhole formed at the tip of 34c, the front vehicle 6 and the rear vehicle 8 are fixed in the maximum turning state, and rotation in the steering release direction is prevented. .. Therefore, the same antitheft effect can be obtained as described above.

In the above description, the example in which the rotation of the front vehicle 6 is prevented when the vehicle 6 makes the maximum turn is shown. However, it is not necessary to make the maximum turn when the vehicle is not in a straight traveling state. Further, in this case, at least rotation in the steering release direction may be prevented.

[0020]

[Effect of the device]

 According to the present invention, when the front vehicle is rotated by a predetermined angle with respect to the rear vehicle, the front vehicle is prevented from rotating at least in the steering release direction with respect to the rear vehicle, and the vehicle is fixed in the straight-ahead state. Since it is possible, it is impossible to drive the vehicle in this state and place it on the bed of the truck, etc., and it is possible to prevent theft. Further, in particular, according to the invention of claim 4, the rotation is prevented at the maximum turning of the front vehicle, so that the rotation preventing device is not required to finely adjust the turning angle between the front vehicle and the rear vehicle. The rotation can be prevented by, and the work becomes easy.

[Brief description of drawings]

FIG. 1 is a schematic plan view showing a vehicle body refraction type vehicle according to a first embodiment of the present invention.

FIG. 2 is an enlarged plan view showing a rotation blocking device of the embodiment of FIG.

3 is a schematic side view of the rotation blocking device of FIG.

FIG. 4 is a schematic perspective view showing a rotation preventing device for a vehicle body bending type vehicle according to a second embodiment of the present invention.

FIG. 5 is a plan view showing a rotation blocking state of the second embodiment.

FIG. 6 is a schematic plan view showing a conventional vehicle body refraction type vehicle.

[Explanation of symbols]

 6 Front Vehicle 8 Rear Vehicle 20 Car Body Refractive Vehicle 21,31 Rotation Blocking Device 22,23,26,52,53 Bracket 24 Lock Bar 24a Straight Forward Fixing Pin Hole 24b Turning Fixing Pin Hole 34 Bar-shaped Hook 34a, 34b, 34c hook

Claims (4)

[Scope of utility model registration request] 1. A vehicle body refraction vehicle including a front vehicle forming a front half of the vehicle and a rear vehicle forming a rear half of the vehicle, and steering by rotating the front vehicle with respect to the rear vehicle. In the above, the front vehicle includes a rotation blocking device that blocks rotation of the front vehicle at least in a steering release direction with respect to the rear vehicle in a state of rotating at a predetermined angle with respect to the rear vehicle. Car body refraction type vehicle. 2. The rotation preventing device includes a bracket projecting from a front vehicle and a rear vehicle, and a base end portion rotatably attached to one of the brackets and a tip end side. A lock bar in which a straight-movement fixing pin hole is formed, and a swing fixing pin hole is formed closer to the base end side than the straight-movement fixing pin hole, and a swing fixing pin hole of this lock bar and the other The fixing pin is inserted into the shaft hole of the bracket, and the locking device is provided to prevent the inserting fixing pin from coming off.
A refraction-type vehicle body as described in. 3. The rotation preventing device has a bracket projecting from a front vehicle and a rear vehicle, respectively, and a first hook inserted at one end into a shaft hole of one of the brackets. In addition, a bar-shaped hooking device having a second hook for fixing straight ahead near the tip on the other end side, and a third hook for turning fixing fixedly formed between the both hooks; 2. The vehicle body refraction type vehicle according to claim 1, further comprising: a lock device for preventing the hook and the third hook from coming off in a state where the hook and the third hook are inserted into the brackets. 4. The vehicle body refraction type vehicle according to claim 1, wherein the predetermined angle is a maximum turning angle.