KR100391422B1 - Apparatus for testing hardness and persistence of pulling hook for vehicle - Google Patents

Abstract

Preparatory work and light maintenance work can be carried out while the test car is arranged on a fixing means of a predetermined height, and the test car can be moved up, down, left, and right to improve convenience and workability, and to prevent worker injury. To provide a device for testing the strength and durability of the vehicle tow hook that can be minimized,

Vehicle fixing means for fixing the test vehicle;

Support means for rotatably supporting the vehicle fixing means at a predetermined height;

Hydraulic actuator means for applying a load to a wire or rod connected to a hook of the test vehicle;

Hydraulic pressure generating means for supplying hydraulic pressure to the hydraulic actuator means;

First lifting means provided in a side of the vehicle fixing means such that a test vehicle can ascend to the position of the vehicle fixing means;

Second lifting means for lifting and lowering the test vehicle installed in the vehicle fixing means and installed in the means;

It provides a strength and durability test device for a vehicle towing hook comprising a.

Description

Strength and durability test device for vehicle towing hook {APPARATUS FOR TESTING HARDNESS AND PERSISTENCE OF PULLING HOOK FOR VEHICLE}

The present invention relates to an apparatus for testing strength and durability of a towing hook for a vehicle, and more particularly, a tire, a front strut or a rear shock absorber, etc. can be removed and mounted according to test conditions in a state in which a test vehicle is disposed on a fixing device. It is possible to move the position of the test vehicle up and down and left and right to improve the convenience and workability, and relates to the strength and durability test device of the vehicle towing hook that can minimize the risk of injury to the operator.

The law mandates that traction hooks be installed at the front and rear of the vehicle so that it can be towed in the event of a vehicle breakdown, and also requires that the hooks withstand a certain load. Therefore, when developing a new car and undergoing a certification test, the satisfaction of strength of hooks such as a tow bar connecting a tow trailer is evaluated.

In addition, when transporting a vehicle by ship, truck, or railroad, a total of three to four shipping hooks are installed at the front and the rear of the vehicle to fix them with wires or chains. Since it must withstand the weight of the vehicle, the durability of the hook is evaluated when developing a new vehicle.

As such, as one of the test apparatuses for testing the strength and durability of the vehicle hooks, the present applicant has proposed a test apparatus capable of simultaneously testing the front and rear traction hooks without moving the vehicle.

The test apparatus is disclosed in Korean Patent Publication No. 98-43322, which will be described with reference to FIGS. 1 and 2.

The strength and durability test device of the vehicle hook is a vehicle fixing device support 110, hydraulic actuator device support 120, the vehicle fixing device 130, the turning roller device 140, hydraulic actuator device 150, and the hydraulic generation It is comprised of device 160 and controller 170.

The vehicle fixing device support 110 serves to support the entire vehicle fixing device 130. The vehicle fixing device support 110 is vertical to be described later of the vehicle fixing device 130 so that the vehicle 110 can be fixed by rotating the vehicle by a necessary angle. An annular groove 111 into which the frame 131 is inserted and fixed is provided, and optionally, the turning roller device 140 may be fixed.

The hydraulic actuator device support 120 is in contact with one side of the vehicle fixing device support 110 at approximately the same height as the vehicle fixing device support 110 to support the hydraulic actuator device 150, while selectively turning direction roller device Support 140.

In addition, the vehicle fixing device 130 includes a wheel tread adjusting frame 133a for adjusting the wheel tread, a wheel base adjusting frame 133b for adjusting the wheel base, four vehicle fixing jigs 135, and a vehicle fixing device support 110 Vertical frame 131 connected to the vehicle, a roller (not shown) which is installed at the bottom of the vertical frame 131 and slides in the groove 111 of the vehicle fixing device support, and the vehicle fixing device 130 by the vehicle fixing device support. Bracket 137 for bolting to 110, the roller at the bottom of the vertical frame 131 is rotatable 360 ° along the groove 111 of the support 110, four to prevent movement by suspension Rope fixing ring 139 is made.

The turning roller device 140 is adjustable up and down, front and rear and left and right, and has a structure that can be mounted to replace the horizontal roller and vertical roller 141 on the top for switching the load pulling direction of the hook, The adjustment is automatically adjusted by the hydraulic cylinder 143.

And, the hydraulic actuator device 150 can be adjusted left and right and up and down, and the vertical and horizontal angle can be adjusted according to the traction direction of the wire, the vertical adjustment is automatically adjusted by the hydraulic motor 151.

The test apparatus having such a configuration, after lifting the vehicle using a hoist or the like in a state where the tire is removed, is fastened to the tire fixing jig 135 by bolts, and the vehicle fixing device 130 and the vehicle fixing device support 110 are separated. Loosen the coupling and fix it again by rotating the vehicle fixing device 130 in accordance with the direction and angle to be tested, and then connect the traction hook of the vehicle and the hydraulic actuator device 150 with wires, and test through the turning roller 140. After adjusting the required direction, the hydraulic actuator device 150 is operated to apply a load to test the strength and durability of the towing hook.

However, according to the prior art described above, work such as removing a tire should be preceded before fixing the test vehicle to the vehicle fixing device, and after completing the preceding work, the vehicle must be lifted using a hoist or the like, so that workability is poor. Safety was not secured.

In addition, after the test vehicle is fixed to the vehicle fixing device, the direction of the vehicle is manually changed by the operator, and in this state, it is not easy to perform simple maintenance work, which is undesirable in terms of convenience improvement. There is this.

Therefore, the present invention was created to solve the above problems, and an object of the present invention is to carry out the preparation work and the maintenance work in a state where the test car is arranged on the fixing means of a predetermined height, and the test car is moved up, down, left and right. It is possible to move to improve the convenience and workability, and to provide an apparatus for testing the strength and durability of the vehicle towing hook that can minimize the risk of injury to the operator.

1 is a side view showing the configuration of a test apparatus according to the prior art.

2 is a plan view of FIG.

Figure 3 is a side view showing the configuration of a test apparatus according to the present invention.

4 is a plan view of FIG.

The present invention for realizing this,

Vehicle fixing means for fixing the test vehicle;

Support means for rotatably supporting the vehicle fixing means at a predetermined height;

Hydraulic actuator means for applying a load to a wire or rod connected to a hook of the test vehicle;

Hydraulic pressure generating means for supplying hydraulic pressure to the hydraulic actuator means;

First lifting means provided in a side of the vehicle fixing means such that a test vehicle can ascend to the position of the vehicle fixing means;

Second lifting means for lifting and lowering the test vehicle installed in the vehicle fixing means and installed in the means;

It provides a strength and durability test device for a vehicle towing hook comprising a.

Hereinafter, the preferred configuration and operation of the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 shows a side view showing the configuration of the test apparatus according to the present invention, Figure 4 shows a plan view of FIG.

The strength and durability test apparatus for a vehicle towing hook includes a vehicle fixing means 10 for fixing a test vehicle, a support means 20 for rotatably supporting the vehicle fixing means 10 at a predetermined height, and a hook of a test vehicle. A hydraulic actuator 30 for applying a load to a wire or rod to be connected, a hydraulic generator 40 for supplying hydraulic pressure to the hydraulic actuator 30, a controller 50, and a test vehicle include the vehicle fixing means 10. A first elevating means 60 provided on the side of the vehicle fixing means so as to ascend to the position of the vehicle; and a second elevating means for elevating and elevating a test vehicle installed in the vehicle fixing means 10 ( 70).

The vehicle fixing means 10 includes a wheel base adjustment frame 11a disposed in the same direction as the travel direction of the test vehicle, and wheels at which both ends of the wheel base adjustment frame 11a are movable to the left and right sides of the vehicle travel direction. The center of the wheel base adjustment frame 11a is connected between the tread adjustment frame 11b, the left-right connecting frame 13a which respectively connects the ends of the wheel base adjustment frame 11a, and the wheel tread adjustment frame 11b. It is composed of a central connecting frame (13b), the wheel base adjustment frame (11a) is provided with a fixing hole (15) in the longitudinal direction in the portion where the four wheels of the vehicle is placed, the fixing hole (15) this hole (15) A fixed jig (not shown) is installed to slide the vehicle along the wheel base of the test vehicle while slidingly moving.

Accordingly, since the wheel tread and the wheel base can be adjusted according to the vehicle model of the test vehicle, it is possible to test various vehicle models with one test apparatus.

In the center connecting frame 13b, four rotary arms 73 are rotatably installed on the base plate 71, and cylinders 75 are provided at the ends of the rotary arms 73, respectively.

Here, the arm 73 and the cylinder 75 constitute the second lifting means 70, which are operated to raise and lower the vehicle during simple maintenance work such as tire removal.

On the other hand, the support means for supporting the vehicle fixing means 20 is a support 21 which is installed on the ground, a rotating cylinder 23 for connecting the support 21 and the center connecting frame 13b, and the left and right connecting frames ( It is provided near each end of 13a, and consists of four fixed cylinders 25 which connect this frame 13a and the support 21. As shown in FIG.

The rotary cylinder 23 is rotated by a rotating means (not shown) such as a motor to rotate the vehicle fixing means 10 clockwise and / or counterclockwise, and the fixed cylinder 25 supports the support 21. A rotating roller (not shown) is provided at the side end to serve to smoothly perform the rotation when the vehicle fixing means 10 rotates. For this purpose, the support 21 has a roller of the fixing cylinder 25. An annular groove 27 is provided on which is slid.

Then, the first lifting means 60 is composed of a movable scaffold having a constant inclination.

Therefore, the test vehicle can move to the vehicle fixing means 10 via the movable scaffold 60, thereby improving safety compared to the conventional method of positioning the vehicle in the fixing means by using a hoist after work such as removing a tire. You can.

On the other hand, on the opposite side to which the movable footrest 60 is installed, the support roller 21 is provided with a rotary roller device 80 and a hydraulic actuator 30 having the same or similar configuration as the prior art, and these devices 30 and 80 are conventionally provided. Like the technology, it can also be installed on a separate support.

The test apparatus of the present invention having such a configuration is prepared by driving a test vehicle, placing the vehicle in the vehicle fixing means 10, operating the elevating cylinder 75, lifting the vehicle, and removing the tires. Work, fix the vehicle by using the fixing jig, and operate the rotary cylinder 23 to rotate the vehicle fixing means 10 in accordance with the direction and angle to be tested, and then fix it by wire, and then the towing hook of the vehicle and hydraulic The strength and durability of the traction hook is tested by connecting the actuator device 30, adjusting the direction required for the test via the turning roller 80, and then operating the hydraulic actuator device 30 to apply a load.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications and changes can be made within the scope of the claims and the detailed description of the invention and the accompanying drawings. Naturally, it belongs to the range of.

As described above, the test apparatus of the present invention can arrange the test vehicle in the vehicle fixing means and perform preparation work such as tire removal and simple maintenance work, and can change the direction of the test vehicle automatically. There is an effect that can improve the safety, and convenience.

Claims (6)

delete The wheel base adjustment frame is disposed in the same direction as the traveling direction of the test vehicle and provided with a fixing hole in which the vehicle fixing jig is fixed in the longitudinal direction so that the wheel base can be adjusted, and both ends of the wheel base adjustment frame A wheel tread adjustment frame provided to be movable in left and right directions, a left and right connection frame connecting ends of the wheel base adjustment frame to the outside of the wheel tread adjustment frame, and the wheel base between the wheel tread adjustment frame. Vehicle fixing means including a center connecting frame connecting the center of the adjusting frame and a vehicle fixing jig inserted into the fixing hole and sliding along the wheel base of the test vehicle; Support means for rotatably supporting the vehicle fixing means at a predetermined height; Hydraulic actuator means for applying a load to a wire or rod connected to a hook of the test vehicle; Hydraulic pressure generating means for supplying hydraulic pressure to the hydraulic actuator means; First lifting means provided in a side of the vehicle fixing means such that a test vehicle can ascend to the position of the vehicle fixing means; And a second elevating means for elevating and elevating a test vehicle provided in the vehicle fixing means. The method of claim 2, wherein the support means, A support having an annular groove and installed on the ground; A main cylinder connecting the support to the center connecting frame and rotating the vehicle fixing means; Strength of the towing hook for a vehicle, which is installed near each end of the left and right connecting frames, connects the frame and the support, and includes a plurality of auxiliary cylinders having rollers that slide along the annular groove. And durability testing apparatus. 3. The strength and durability test apparatus of claim 2, wherein the first lifting means comprises a movable scaffold having a predetermined inclination. The strength of the towing hook for a vehicle according to claim 2, wherein the second elevating means includes a plurality of arms provided on the center frame, and an elevating cylinder provided on each end of the arm. And durability testing apparatus. 6. The strength and durability test apparatus of claim 5, wherein the arm is rotatably installed.