JPS6060013A - Traction truck - Google Patents

Abstract

PURPOSE:To let a truck steer automatically as well as to make its smooth driving attainable, by coupling each pair of front and rear wheels intelockingly with each of front and rear traction levers via a steering knuckle and an interlocking link, while installing a device which lockes each of these front and rear traction levers to each straight drive attitude. CONSTITUTION:A truck body 1 is provided with each of a symmetrical pair of wheels 2 and 8 and a pair of symmetrically rockable traction levers 5 and 11 in front and in the rear. In this case, a pair of front wheels 2 are interlockingly coupled with the front traction lever 5 via a steering knuckle 4 and an interlocking link 7 at both sides. Likewise, a pair of rear wheels 8 is also interlockingly coupled with the rear traction lever 11 via a steering knuckle 10 and interlocking link 23 at both sides. And, there are provided with traction lever locking devices 14 and 15 having a lock pin 17 liftably supported by a guide being secured tight to the front and rear of the truck body 1. With this constitution, these traction levers 5 and 11 at the opposite side to a traction direction is surely locked in advance so that the truck body 1 is travelable in the traction direction.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is capable of towing in either the front or rear direction via a traction rod, and when towing in either direction, the two The purpose of the present invention is to provide a towing trolley whose wheels can be automatically steered by steering knuckles.

Hereinafter, one embodiment of the present invention will be described based on the attached illustrative drawings. In FIGS. 1 and 2, 1 is a truck body, and the floor plate forming the loading surface is omitted from the illustration. . 2a,
2b denotes a pair of left and right front wheels, which are pivotally connected to both ends of a support member 6 fixed to the bottom of the truck body 1 via steering knuckles 4. Reference numeral 5 denotes a front traction rod, which is pivoted to the center of the support member 6 via a vertical support shaft 6 so as to be swingable to the left, and its inner end is connected to the knuckle arms of the left and right steering knuckles 4. 4a are interlocked and connected via interlocking links 7a and 7b, respectively. Reference numerals 8a and 8b denote a pair of rear left and right wheels, which are pivotally connected to both ends of a support member 9 fixed to the bottom of the truck body 1 via steering knuckles 10. Reference numeral 11 denotes a rear traction rod, which is pivotally attached to the center of the support member 9 via a vertical support shaft 12 so as to be able to swing left and right, and whose inner end is connected to the knuckle arms 10a of the left and right steering knuckles 10. are interlocked and connected via interlocking links 125a and 1b, respectively. .

Reference numeral 14 denotes a front traction rod locking means, and numeral 15 denotes a rear traction rod locking means, each of which includes a lock pin 17 supported in a vertically movable manner by lifting guides 16 fixed to the front and rear ends of the bogie body 1, respectively. ing.

These lock pins 17 are connected to a lever 18 connected to the upper end.
It is raised and lowered by the front traction rod 14 shown in FIG.
1. The locking pin 17 can be locked in a state that prevents rain from falling from that position. Although this locking means is not shown, for example, a small protrusion protruding from the l'' lock pin 17 is fitted into a locking recess provided in the lifting guide 16 by slightly rotating the lock pin 11. A conventionally known locking means is utilized. The lock pin 17 in this locking means 14.15 is in a state in which the traction rods 5, 11 are oriented in the straight-ahead direction (therefore, each wheel 2a, 2b, 5a, 8b is in a straight-ahead posture as shown in the figure). In this state, the traction rods 5, 11 are lowered to fit into the locking holes 19, 20 provided in the traction rods 5, 11, thereby fixing the traction rods 5, 11 in the straight-ahead position.

Reference numeral 21 denotes a traction axotiment which is pivotally supported on the outer end of the front traction rod 5 so that the upper part can swing freely within a certain range, and 22 is a U-shaped female connector connected to the outer end of the rear traction rod 11. The connecting male member 25 can be connected to the male member 25 so as to be swingable from side to side via the vertical pin 22a.

In FIG. 3, 24 is the front end towing truck as shown in FIGS. 1 and 2, and the intermediate towing truck 25 has a front towing rod 5
The male connection member 25 is connected to the outer end of the
The rear end traction truck 26 has the male connection member 25 connected to the outer end of the front traction rod 5, and the traction acnotiment 21 is pivotally supported on the outer end of the rear traction rod 11. Then, the rear traction rod 11 of the C1 front-end traction truck 24 and the front traction rod 5 of the intermediate traction truck 25, and the rear traction rod 11 of the intermediate traction truck 25 and the front traction rod 5 of the rear-end traction truck 26, respectively. Connected via the U-shaped female connection member 22, vertical pin 22a, and male connection member 25,
As shown in FIG. 2, the rear traction rod 11 is locked in a state facing straight ahead by fitting the lock pin 17 of the rear traction rod locking means 15 into the locking hole 2o of the rear traction rod 11. There is.

Therefore, in the three mutually connected towing carts 24 to 26 shown in FIG.
Only b is in a state in which it performs a °C steering movement in conjunction with the left and right rocking of the front traction rod 5 of the person. In such a state, if the front end traction truck 24 is pulled in the direction of the arrow 27 by an appropriate method via the traction axotiment 21 of the front traction rod 5, the intermediate traction truck 25 and the rear end traction truck 26 will also follow. However, if the traction direction of the front end traction truck 24 turns to the left or right, the front traction rod 5 of the front end traction truck 24 will move around the vertical support shaft 6 as shown by the imaginary line in FIG. The rocking motion is transmitted to the steering knuckle 4 via the interlocking links 7a and 7b, and the front left and right pair of wheels ';la, 2b automatically steer in the towing direction. be done. Therefore, the front end towing truck 24 travels while turning smoothly in the towing direction. This bending of the front end traction truck 24 in the moving direction is transmitted to the front traction rod 5 of the intermediate traction truck 25 via the rear traction rod 11 fixed to the truck body 1, and the front traction rod 5 of the intermediate traction truck 25 is 5 will swing in the traction direction as described above. Therefore, intermediate tow truck 2
As mentioned earlier, the front left and right pair of wheels 2a and 2b in the front traction rod 5 are also automatically steered as the front traction rod 5 is turned and the traction direction is turned. As with the front-end towing truck 24, it travels while making smooth turns in the towing direction. Due to this bend in the moving direction of the intermediate tow truck 25, the front left and right pair of wheels 2a and 2b of the rear end tow truck 26 are similarly automatically steered.

As described above, the three towing carts 24 to 26 connected to each other are automatically steered in turn with the pair of front left and right wheels 2a and 2b being automatically steered as the towing direction is turned, so that the three towing carts 24 to 26 can turn smoothly. Every time you drive.

When towing the three tow trucks 24 to 26 connected to each other in the backward direction opposite to the direction of arrow 27, the locking means 1 for the rear traction rod 11 of each tow truck 24 to 26
5, the lock bin 17 of the front traction rod locking means 14 is fitted into the locking hole 19 of the front traction rod 5, and the front traction rod 5 of each of the traction carts 24 to 26 is directed in the straight direction. Fixed in state. As a result, by towing the rear towing rod 11 of the rear end towing truck 26 via the towing axotiment 21, each of the towing trucks 24 to 26 can be towed in the opposite direction. A pair of front left and right wheels 2a and 2b located on the rear side in the moving direction of 24 to 26 are fixed in a straight forward posture, and a rear pair of left and right wheels 8a is located on the moving direction side.

8b is the left 1j I of the rear 91i traction rod 11 as described above.
The vehicle is automatically steered in conjunction with the j3 movement. Therefore, each of the towing carts 24 to 26 can travel smoothly while turning as the towing direction is turned.

As a traction rod, a traction rod with a traction rod Akunotimene I.
Although a traction rod with a connecting male member 2'5 connected thereto was used, all the traction rods themselves had the same structure, and included the traction axotiment 21, the U-shaped female connection member 22, and the male connection member 23. Of these, it is also possible to configure a structure in which the idle one can be connected to the end.

Further, although an embodiment has been shown in which a plurality of towing carts 24 to 26 are connected to each other and towed, it is also possible to tow one towing cart independently forward or backward.

In this case, the traction axotiment 21 is connected to the traction rod 5 or 11 located on the towing direction side among the front traction rod 5 and the rear traction rod 11, and the traction rod 11 or 11 in the opposite direction to the traction direction is connected. 5 may be fixed by locking means 15 or 14.

The towing truck of the present invention is a towing truck equipped with a pair of left and right wheels at the front and rear, respectively, and a traction rod that can swing left and right, as in the above embodiment, and the front pair of wheels are attached to the front traction rod. A pair of rear wheels are interlocked and connected via a steering knuckle and an interlocking link, a pair of rear wheels are interlocked and connected to a rear traction rod via a steering knuckle and an interlocking link, and the front traction rod and rear traction rod are connected to each other. 1: Since it is equipped with a J-lock means, by cocking the traction rod on the side opposite to the traction direction with the locking means,
Regardless of whether the traction direction is forward or reverse, the pair of left and right wheels located on the front side in the direction of movement are automatically moved between the beams in conjunction with the left-right swing of the traction rod, and the wheels are positioned at the rear. By fixing the pair of left and right wheels in a straight-ahead position, the cart being towed can run smoothly in the C towing direction. Furthermore, as explained in the embodiment, even when multiple towing carts are connected to each other for towing, simply by locking either the front or the rear tow rod, the tow bar can be towed in any direction. It is possible to do so.

[Brief explanation of the drawing]

FIG. 1 is a plan view, FIG. 2 is a side view, and FIG. 3 is a schematic plan view illustrating the state of use. DESCRIPTION OF SYMBOLS 1... Bogie body, 2a, 2b... Front left and right pair of wheels, 6, 9... Support member, 4, 10... Steering knuckle, 4a, 10a... Knuckle arm, 5 ...Front traction rod, 6.12...Vertical support shaft, 7a, 7b, 15
a, 15b... Interlocking link, 8a, 8b... Rear left and right pair of wheels, 11... Rear traction rod, 14.15...
・Traction rod locking means, 17...Lock pin, 19.2
0... Locking hole, 21... Towing axotiment, 2
2... U-shaped female part shrine for connection, 25... Male member for connection,
24-26... Towing trolley. Voluntary Procedure Nei City IE (Method) March 1980 730 Commissioner of the Japan Patent Office 2 Name of invention (11, Car trolley 3, ?11 Relationship to the case of person who corrects i) Patent applicant address Osaka City, Osaka Prefecture Nishiyodogawa-ku Goheijima 3] 12-11 Name (364) Daifuku Kiko Co., Ltd. Showa Month 5, subject to correction (no change in content).

Claims (1)

[Claims] It is a tow truck equipped with a pair of left and right wheels at the front and rear, and a traction rod that can swing left and right.The front pair of wheels are interlocked and connected to the front traction rod via a steering knuckle and an interlocking link. The rear pair of wheels are interlocked and connected to the rear traction rod via a steering knuckle and an interlocking link, and releasable locking means are provided for locking the front traction rod and the rear traction rod in a straight-ahead position, respectively. A tow truck.