Ground contact protection device for compartment rear door and bumper of bulk material vehicle

Abstract

The utility model discloses a bulk material vehicle compartment rear door and bumper ground contact protection device which comprises a fixing plate and a swing frame, a hinge hanging lug is arranged at one end of the fixing plate, a through hole is formed in the other end of the fixing plate, and a first shaft hole is formed in the hinge hanging lug; one end of the swing frame is provided with a second shaft hole, and the other end is provided with a swing rod; a spring hanging lug is arranged on the lower surface of the fixing plate, a stand column is arranged on the swing frame, an adjusting shaft is arranged on the stand column, a spring is arranged between the spring hanging lug and the adjusting shaft, a photoelectric support is further arranged, and a photoelectric sensor is arranged on the photoelectric support. The device has the advantages that the fixing plate, the swing frame, the spring and the photoelectric sensor work in a matched mode, ground contact protection of the rear door and the bumper of the carriage is achieved, the hydraulic turning plate is controlled to stop working in time after the rear wheels tilt up, and the situation that a vehicle falls off from the hydraulic turning plate, and large economic losses are generated is avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of unloading devices, and in particular to a ground contact protection device for the rear door and bumper of a bulk material truck. Background Technology

[0002] When unloading bulk material trucks (such as dump trucks and mining trucks) after they have come to a complete stop on the hydraulic tipping platform, the rear door of the truck bed needs to be opened. During use, if the operator is not careful, the vehicle bumper or door may touch the ground, causing the vehicle to leverage and lift the rear wheels. In severe cases, this can even cause the vehicle to fall off the hydraulic tipping platform, resulting in significant economic losses.

[0003] Traditional rear door ground contact protection devices mostly use rigid supports or hydraulic buffer structures, which have the following problems:

[0004] 1. Rigid support devices are prone to deformation or wear of the rear door due to uneven ground;

[0005] 2. Hydraulic buffer structures are costly, complex to maintain, and prone to oil leakage and failure after long-term use;

[0006] 3. The existing spring buffer device has insufficient elastic stroke and is difficult to adapt to different ground conditions.

[0007] Therefore, there is an urgent need for a ground contact protection device that is simple in structure, low in cost, and durable, aiming to improve equipment safety and operational reliability and reduce the risks caused by human error. Utility Model Content

[0008] The purpose of this utility model is to overcome the above-mentioned technical defects and provide a ground contact protection device for the rear door and bumper of a bulk material truck. By absorbing the impact force, it can stop the hydraulic flap lifting in time, protect the rear door and bumper of the truck, and reduce maintenance costs.

[0009] The technical solution adopted by this utility model to achieve its technical objective is as follows: a ground contact protection device for the rear door and bumper of a bulk material truck, comprising a fixed plate and a swing frame. One end of the fixed plate is provided with a hinged lug, and the other end is provided with a through hole. A first shaft hole is provided on the hinged lug. One end of the swing frame is provided with a second shaft hole, and the other end is provided with a swing rod. The first shaft hole and the second shaft hole are hinged by a pin, and the swing rod can swing up and down along the through hole.

[0010] The lower surface of the fixed plate is provided with a spring hanger, the swing frame is provided with a column, the column is provided with an adjustment shaft, a spring is provided between the spring hanger and the adjustment shaft, and a photoelectric bracket is also provided on the swing frame and in front of the column, and a photoelectric sensor is provided on the photoelectric bracket.

[0011] Preferably, the swing frame has a U-shaped structure, including a front support and a rear support that are symmetrical to each other. The swing rod is disposed at the left end of the front support and the rear support. Between the front support and the rear support, a first stiffening plate and a second stiffening plate are disposed sequentially from left to right. The column is disposed on the first stiffening plate.

[0012] Preferably, the upper end of the column is fixed to the first stiffening plate, and the lower end is provided with an adjustment groove, through which the adjustment shaft passes.

[0013] Preferably, the adjusting groove has a sawtooth shape.

[0014] Preferably, both the front support and the rear support are L-shaped structures, including a horizontal part and a vertical part, and the horizontal part and the vertical part are connected by an arc transition.

[0015] Preferably, the top of the horizontal part has a stepped structure, including a first step and a second step.

[0016] Preferably, the swing arm is located at the top of the first step, and the fixing plate is located above the second step.

[0017] Preferably, the fixing plate has an I-shaped structure, including a left end plate, a middle connecting rod, and a right end plate. A through hole is provided on the left end plate, a spring hook is provided on the middle connecting rod, and a hinge hook is provided on the right end plate.

[0018] The beneficial effects of this utility model are: the fixed plate, the swing frame, the spring, and the photoelectric sensor work together to achieve ground protection for the rear door and bumper of the vehicle. After the rear wheels lift up, the hydraulic flap is controlled to stop working in time to avoid the vehicle falling off the hydraulic flap and causing significant economic losses. Attached Figure Description

[0019] Figure 1 This is a perspective view of the overall structure of this utility model;

[0020] Figure 2 This is a front view of the overall structure of this utility model;

[0021] Figure 3 This is a bottom view of the overall structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the working state of this utility model;

[0023] Figure 5 for Figure 4 A magnified view of a portion of the image.

[0024] The diagram is marked as follows:

[0025] 1. Fixed plate; 2. Swing frame; 3. Hinge lug; 4. Through hole; 5. First shaft hole; 6. Second shaft hole;

[0026] 7. Swing rod; 8. Pin; 9. Spring lug; 10. Column; 11. Adjusting shaft; 12. Spring;

[0027] 13. Photoelectric support; 14. Photoelectric sensor; 15. Adjustment groove; 101. Left end plate; 102. Intermediate connecting rod;

[0028] 103 Right end plate; 21 Front support; 22 Rear support; 23 First stiffening plate; 24 Second stiffening plate; 25 Horizontal section;

[0029] 26. Vertical section; 251. First step; 252. Second step. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0031] Example 1

[0032] like Figure 1-5 As shown: The rear door and bumper ground contact protection device of the bulk material truck includes a fixed plate 1 and a swing frame 2. One end of the fixed plate 1 is provided with a hinge lug 3 and the other end is provided with a through hole 4. A first shaft hole 5 is provided on the hinge lug 3. One end of the swing frame 2 is provided with a second shaft hole 6 and the other end is provided with a swing rod 7. The first shaft hole 5 and the second shaft hole 6 are hinged by a pin 8. The swing rod 7 can swing up and down along the through hole 4.

[0033] The lower surface of the fixed plate 1 is provided with a spring lug 9, the swing frame 2 is provided with a column 10, the column 10 is provided with an adjustment shaft 11, a spring 12 is provided between the spring lug 9 and the adjustment shaft 11, and a photoelectric bracket 13 is also provided on the swing frame 2 and in front of the column 10, and a photoelectric sensor 14 is provided on the photoelectric bracket.

[0034] The swing frame 2 has a U-shaped structure, including a front support 21 and a rear support 22 that are symmetrical to each other. The swing rod 7 is located at the left end of the front support 21 and the rear support 22. Between the front support 21 and the rear support 22, a first stiffening plate 23 and a second stiffening plate 24 are arranged sequentially from left to right. The column 10 is located on the first stiffening plate 23.

[0035] The upper end of the column 10 is fixed to the first stiffening plate 23, and the lower end is provided with an adjustment groove 15. The adjustment groove 15 has a sawtooth structure, and the adjustment shaft 11 passes through the adjustment groove 15, so that the specific position of the adjustment shaft 11 in the adjustment groove 15 can be flexibly selected according to the needs of the application scenario, so as to realize the effective operation of the spring 12.

[0036] Both the front support 21 and the rear support 22 are L-shaped structures, including a horizontal portion 25 and a vertical portion 26, and the horizontal portion 25 and the vertical portion 26 are connected by an arc transition. The top of the horizontal portion 25 has a stepped structure, including a first step 251 and a second step 252.

[0037] The swing arm 7 is located at the top of the first step 251, and the fixing plate 1 is located above the second step 252.

[0038] The fixing plate 1 has an I-shaped structure, which reduces the overall weight of the fixing plate 1. The fixing plate 1 includes a left end plate 101, a middle connecting rod 102, and a right end plate 103. A through hole 4 is provided on the left end plate 101, a spring lug 9 is provided on the middle connecting rod 102, and a hinge lug 3 is provided on the right end plate 103.

[0039] The working principle and process of this utility model are as follows:

[0040] The ground contact protection device for the rear door and bumper of the bulk material truck described in this utility model is installed on the hydraulic tipping plate of the bulk material truck unloading platform. After the vehicle stops on the hydraulic tipping plate, the rear wheels of the vehicle press the swing arm 7 downward, making the swing arm 7 flush with the left end plate 101. The front bracket 21 blocks the photoelectric sensor 14 in front of it, and the photoelectric sensor 14 is in a stationary state. When the rear door of the truck is opened, the hydraulic tipping plate begins to rise, and the vehicle rises with the hydraulic tipping plate. Figure 4 As shown,

[0041] When the vehicle bumper or door touches the ground, the rear wheels lift up due to the lever principle, such as... Figure 5 As shown, after the rear wheels lift, they move away from the swing arm 7. Under the action of the spring 12, the swing arm 7 returns to its original position from the depressed state and swings upward along the through hole 4. The front support 21 and the rear support 22 swing upward simultaneously with the swing arm 7. At this time, the photoelectric sensor 14 is triggered. That is, after the photoelectric sensor 14 senses the displacement signal of the front support 21, it transmits it to the hydraulic tipping control system, thereby causing the hydraulic tipping to stop lifting. The operator then goes to the rear door of the truck bed to check the unloading situation and prevent the vehicle from falling off the hydraulic tipping.

[0042] The fixed plate 1, the swing frame 2, the spring 12, and the photoelectric sensor 14 work together to protect the rear door and bumper of the vehicle from contact with the ground. After the rear wheels lift up, the hydraulic flap is controlled to stop working in time to prevent the vehicle from falling off the hydraulic flap and causing significant economic losses.

Claims

1. A ground contact protection device for the rear door and bumper of a bulk material truck, comprising a fixed plate and a swing frame, characterized in that: The fixed plate has a hinged lug at one end and a through hole at the other end, and a first shaft hole is provided on the hinged lug; the swing frame has a second shaft hole at one end and a swing rod at the other end; the first shaft hole and the second shaft hole are hinged by a pin, and the swing rod can swing up and down along the through hole; The lower surface of the fixed plate is provided with a spring hanger, the swing frame is provided with a column, the column is provided with an adjustment shaft, a spring is provided between the spring hanger and the adjustment shaft, and a photoelectric bracket is also provided on the swing frame and in front of the column, and a photoelectric sensor is provided on the photoelectric bracket.

2. The ground contact protection device for the rear door and bumper of the bulk material truck according to claim 1, characterized in that: The swing frame has a U-shaped structure, including a front support and a rear support that are symmetrical to each other. The swing rod is located at the left end of the front support and the rear support. Between the front support and the rear support, a first stiffening plate and a second stiffening plate are arranged sequentially from left to right. The column is located on the first stiffening plate.

3. The ground contact protection device for the rear door and bumper of the bulk material truck according to claim 2, characterized in that: The upper end of the column is fixed to the first stiffening plate, and the lower end is provided with an adjustment groove, through which the adjustment shaft passes.

4. The ground contact protection device for the rear door and bumper of the bulk material truck according to claim 3, characterized in that: The adjustment groove has a sawtooth-shaped structure.

5. The ground contact protection device for the rear door and bumper of the bulk material truck according to claim 2, characterized in that: Both the front and rear brackets are L-shaped structures, including a horizontal part and a vertical part, and the horizontal part and the vertical part are connected by an arc transition.

6. The ground contact protection device for the rear door and bumper of the bulk material truck according to claim 5, characterized in that: The top of the horizontal section has a stepped structure, including a first step and a second step.

7. The ground contact protection device for the rear door and bumper of the bulk material truck according to claim 6, characterized in that: The swing arm is located at the top of the first step, and the fixed plate is located above the second step.

8. The ground contact protection device for the rear door and bumper of the bulk material truck according to claim 1, characterized in that: The fixing plate has an I-shaped structure, including a left end plate, a middle connecting rod, and a right end plate. The through hole is set on the left end plate, the spring hanger is set on the middle connecting rod, and the hinge hanger is set on the right end plate.

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