A trailer device with emergency release function

Abstract

The utility model discloses a trailer device with emergency release function, include: lever type rotary hook body, cooperation and installation on the chassis bottom plate, the difference compensation formula push mechanism, head and lever type rotary hook body's push end are connected, floating oil cylinder, its telescopic rod end and the difference compensation formula push mechanism tail portion are connected, and its cylinder body is fixed on the vehicle body, wherein, the oil port of floating oil cylinder is connected with the oil port of hydraulic brake, when lever type rotary hook body is hauled and rotates, can push the difference compensation formula push mechanism and move, and the oil in floating oil cylinder is pushed into hydraulic brake by the difference compensation formula push mechanism, and hydraulic brake releases the brake. The utility model can release the brake of hydraulic brake without manual operation, and carry out the trailer operation, improve the work safety and high efficiency.

Description

Technical Field

[0001] This utility model relates to the field of underground trackless vehicle mechanical equipment technology, and in particular to a trailer device with an emergency release function. Background Technology

[0002] The drive axle of trackless equipment in underground mines typically uses a hydraulic normally closed brake. When the vehicle is stationary (system depressurization), the brake pads are pressed together by the brake spring, and the brake is in a braking state, meaning the vehicle will automatically maintain the parking brake.

[0003] Hydraulic normally closed brakes enhance the safety of trackless equipment underground. However, when other accidents such as vehicle damage or mine collapse occur, the equipment will enter a braking state due to system pressure relief. At this time, it is difficult to drag the trapped device by cable or other vehicles, which makes it inconvenient to carry out rescue.

[0004] Although each trackless rig is equipped with a manual release device to deal with the above-mentioned special situations, manual operation is still very difficult. This operation is time-consuming and laborious, and usually comes with certain risks. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a trailer device with an emergency release function.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: A trailer hitch with emergency release capability, comprising: A lever-type rotating hook body is fitted and installed on the chassis base plate; The differential compensation type drive mechanism has its head connected to the drive end of the lever-type rotating hook body; The floating cylinder has its telescopic rod end connected to the tail of the differential compensation push mechanism, and its cylinder body is fixed to the vehicle body. The oil ports of the floating cylinder are connected to the oil ports of the normally closed hydraulic brake, so that when the lever-type rotating hook body is pulled and rotated, it can push the differential compensation push mechanism to move. The differential compensation push mechanism pushes the oil in the floating cylinder into the normally closed hydraulic brake, and the normally closed hydraulic brake releases the brake.

[0007] The lever-type rotating hook body includes: The three trailer hitches are in the form of a triangular star structure. The fixing pin is vertically inserted into the central socket of the triangular star structure. Its top is mounted on the spoke of the rear bending plate of the frame, and its bottom is mounted on the welding seat of the frame base plate through the limiting lug.

[0008] The top of the triangular star structure is provided with an adjusting steel pad, which is fitted onto the fixing pin.

[0009] The differential compensation propulsion mechanism includes: The horizontally placed sleeve has its head hinged to one of the trailer hooks via a hinge pin, and a sliding hole is provided on its side wall. The connecting rod has its head fitted inside a sleeve. The connector is vertically inserted into the sliding hole and connected to the side wall of the connecting rod; The connecting rod tail is connected to the telescopic rod of the floating cylinder.

[0010] A thrust plate is provided at the tail end of the sleeve; It also includes a spring, which is fitted onto the connecting rod, with its tail in contact with the floating cylinder and its head resting against the thrust plate.

[0011] The floating hydraulic cylinder includes: The cylinder body is hinged to the vehicle body at the bottom via a hinge pin and a floating seat.

[0012] The beneficial effects of this utility model are: 1. The lever-type rotating hook body of this utility model is used to drag other objects or to drag its own vehicle body under the action of external force; the differential compensation push mechanism is used to connect the lever-type rotating hook body and the cylinder body, and to compensate for the radial stroke when the lever-type rotating hook body rotates; the spring is used for automatic reset of the device after use; the floating cylinder is used to input the hydraulic oil inside the cylinder body into the brake oil circuit of the trackless equipment in the well after movement, and to open the normally closed brake. 2. The trailer hook of this utility model is a receiving unit for dragging other objects or dragging its own vehicle body under the action of external force. It is designed with a rotation center and a triangular star structure composed of three trailer hooks. One trailer hook is connected to the sleeve, and the other two serve as a cable fixing device when actively towing and a cable fixing device when driven towing. The limiting lug is used to limit the vertical height of the trailer hook, the adjusting steel pad is used to adjust the vertical height of the trailer hook and acts as a wear-resistant buffer during rotation, and the fixing pin is used to fix the trailer hook and provide a rotation center for the rotation action. 3. The hinge pin of this utility model is used to connect the differential compensation push mechanism with the lever-type rotating hook body. The sleeve provides guidance for the axial movement of the connecting rod. The connecting piece connects the sleeve and the connecting rod. The thrust plate is used to compress the spring and reset it under force. The spring is used to compress the rod end under force during movement. After one movement, the trailer device is reset and ready for the second movement. 4. The cylinder body of this utility model is used to input the internal hydraulic oil into the brake oil circuit of the trackless equipment after the cylinder rod moves, and to open the normally closed brake. The hinge pin is used to connect the floating seat and the cylinder body. The floating seat is used to fix the floating cylinder on the vehicle body and to provide support for the movement of the cylinder body. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the lever-type rotating hook body of this utility model; Figure 3 This is a schematic diagram of the differential compensation type drive mechanism of this utility model; Figure 4 This is a cross-sectional view of the differential compensation type push mechanism of this utility model; Figure 5 This is a schematic diagram of the structure of the floating hydraulic cylinder of this utility model; Figure 6 This is a diagram showing the usage state of this utility model; Figure 7 for Figure 6 The front view; Figure 8 for Figure 6 A bottom view. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0015] like Figure 1 and Figures 6 to 8 As shown, a trailer hitch with emergency release function includes: a lever-type rotary hook body 100, which is mounted on the chassis floor; a differential compensation push mechanism 200, the head of which is connected to the push end of the lever-type rotary hook body 100; and a floating cylinder 400, the end of which is connected to the tail of the differential compensation push mechanism 200, and the cylinder body is fixed to the vehicle body; wherein, the oil port of the floating cylinder 400 is connected to the oil port of a normally closed hydraulic brake, so that when the lever-type rotary hook body 100 is traction-rotated, it can push the differential compensation push mechanism 200 to move, and the differential compensation push mechanism 200 pushes the oil in the floating cylinder 400 into the normally closed hydraulic brake, thereby releasing the brake.

[0016] like Figure 1 and Figure 2As shown, the lever-type rotating hook body 100 includes: three trailer hooks 101, which are triangular star structures; a fixing pin 104, which is vertically inserted into the central insertion hole of the triangular star structure, with its top mounted on the spoke of the rear bending plate of the frame, and its bottom mounted on the welding seat of the frame base plate through the limiting lug 102. An adjusting steel pad 103 is provided on the top of the triangular star structure, and the adjusting steel pad 103 is fitted onto the fixing pin (104).

[0017] like Figure 3 and Figure 4 As shown, the differential compensation type push mechanism 200 includes: a horizontally placed sleeve 202, the head of which is hinged to one of the trailer hooks 101 via a hinge pin 201, and a sliding hole is provided on its side wall; a connecting rod 205, the head of which is fitted inside the sleeve 202; a connecting piece 203, which is vertically inserted into the sliding hole and connected to the side wall of the connecting rod 205; wherein, the tail of the connecting rod 205 is connected to the telescopic rod of the floating cylinder 400. A thrust plate 204 is provided at the tail of the sleeve 202; it also includes a spring 300, which is fitted on the connecting rod 205, the tail of which contacts the floating cylinder 400, and the head abuts against the thrust plate 204.

[0018] like Figure 1 and Figure 5 As shown, the floating cylinder 400 includes: a cylinder body 401, the bottom of which is hinged to the vehicle body via a hinge pin 402 and a floating seat 403.

[0019] In use, point A of the three trailer hooks 101 serves as the fixing point for the cable when the loader is the active party in the towing operation. At this time, the lever-type rotating hook body 100 is connected to the vehicle frame body through the limiting lug 102 and the fixing pin 104, which can be regarded as a conventional towing device. That is, in a towing relationship, if the vehicle is the active party, the cable can be tied and fixed between point A of the trailer hook 101 and the driven party, and then it can be actively towed.

[0020] Point B of the three trailer hooks 101 is the fixing point of the cable when the loader is the passive party to perform the towing action. That is, in a set of towing relationships, if my vehicle is the driven party, the cable can be tied and fixed between point B of the trailer hook 101 and the driving party, and then it can be towed.

[0021] At this time, the trailer hook 101 will rotate around the fixing pin 104 due to the action of the cable, forming a lever structure with the sleeve 202, thereby driving the sleeve 202 to move towards the cylinder body 401 and simultaneously compressing the spring 300.

[0022] Because the sleeve 202 has a sliding hole, and the connector 203, which is fixed to the connecting rod 205, is located at one end of the sliding hole, the sleeve 202 can compensate for the difference between the travel of the trailer hook 101 and the travel of the cylinder body 401 when it moves. When the connector 203 moves to the other end of the sliding hole, the sleeve 202 will push the connecting rod 205, which is fixed to the connector 203, to move.

[0023] The connecting rod 205 is rigidly connected to the cylinder body 401, so it will be driven to extend the telescopic rod. The hydraulic oil in the cylinder body 401 then enters the braking system. After the hydraulic normally closed brake is pressurized, the oil pressure pushes the piston to compress the brake spring, the friction pad assembly separates, the hydraulic normally closed brake disengages, and the vehicle releases the parking brake.

[0024] After the towing action is completed, the spring 300 will reset due to the loss of external force, thereby restoring the trailer hook 101 to its initial state.

[0025] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A trailer device with an emergency release function, characterized in that, include: A lever-type rotating hook body (100) is fitted and installed on the chassis base plate; The differential compensation type push mechanism (200) has its head connected to the push end of the lever-type rotating hook body (100); A floating cylinder (400) has its telescopic rod end connected to the tail of a differential compensation push mechanism (200), and its cylinder body is fixed on the vehicle body; The oil ports of the floating cylinder (400) are connected to the oil ports of the hydraulic normally closed brake, so that when the lever-type rotating hook body (100) is pulled to rotate, it can push the differential compensation push mechanism (200) to move. The differential compensation push mechanism (200) pushes the oil in the floating cylinder (400) into the hydraulic normally closed brake, and the hydraulic normally closed brake releases the brake.

2. A trailer device with emergency release function according to claim 1, characterized in that, The lever-type rotating hook body (100) includes: The three trailer hooks (101) are triangular star structures; The fixing pin (104) is vertically inserted into the central hole of the triangular star structure. Its top is mounted on the spoke of the rear bending plate of the frame, and its bottom is mounted on the welding seat of the frame base plate through the limiting lug (102).

3. A trailer device with emergency release function according to claim 2, characterized in that, The top of the triangular star structure is provided with an adjusting steel pad (103), which is fitted onto the fixing pin (104).

4. A trailer device with emergency release function according to claim 2, characterized in that, The differential compensation propulsion mechanism (200) includes: The horizontally placed sleeve (202) has its head hinged to one of the trailer hooks (101) via a hinge pin (201), and a sliding hole is provided on its side wall; The connecting rod (205) has its head fitted inside the sleeve (202); The connector (203) is vertically inserted into the sliding hole and connected to the side wall of the connecting rod (205); The tail of the connecting rod (205) is connected to the telescopic rod of the floating cylinder (400).

5. A trailer device with emergency release function according to claim 4, characterized in that, A thrust plate (204) is provided at the tail end of the sleeve (202). It also includes a spring (300), which is fitted on the connecting rod (205), with its tail in contact with the floating cylinder (400) and its head abutting against the thrust plate (204).

6. A trailer device with emergency release function according to claim 1, characterized in that, The floating cylinder (400) includes: The cylinder body (401) is hinged to the vehicle body at the bottom via a hinge pin (402) and a floating seat (403).

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