Anti-unhooking self-locking device for underground side-dumping mine car

Abstract

An anti-unhooking self-locking device of an underground side dumping type mine car comprises a mine car connecting arm, a pin shaft and a locking block, a mounting hole used for mounting the pin shaft is formed in the mine car connecting arm, a mounting plate is further fixedly mounted on the mine car connecting arm, the locking block is rotationally mounted on the mounting plate, and the locking block comprises a locking part and a self-locking part. The locking part and the self-locking part are located at the two ends of the locking block respectively, the gravity center of the locking block is located on the self-locking part, and a right-angle opening matched with the round head of the pin shaft is formed in the locking part. The pin shaft locking device is simple in structure, capable of automatically locking the pin shaft and preventing the pin shaft from accidentally falling off in the operation process, meanwhile, capable of rapidly disassembling the pin shaft and convenient to maintain.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of mine machinery, and specifically relates to a rail car connecting device. BACKGROUND

[0002] In current underground mining operations, mined ore and waste rock are mostly transported by rail cars, specifically, a tractor head is connected with a side-dumping car group for transportation operation, wherein the tractor head and the car group are connected in sequence through a pin shaft.

[0003] However, the underground mine transportation line is long and the environment is complex, the rail car will encounter track wear, falling rocks on the track or height difference at the track joint and other conditions during the transportation process, the pin shaft is caused to come off due to bumping, thereby causing the car to come off the track and crash, causing damage to equipment and personnel and safety production accidents, therefore, the pin shaft connection without anti-disengagement function has great safety hazards in mine production.

[0004] In view of this problem, the utility model with the publication number CN201304994Y discloses a traction pin with a self-locking function, which realizes the self-locking function by using gravity, and avoids accidental disengagement of the pin shaft during transportation, however, the technology still has the following problems: firstly, the locking mechanism of the scheme is located below, which may be deformed or disengaged due to various unexpected conditions during the operation of the mine vehicle, affecting the locking effect; secondly, since the locking mechanism is located below, and the underground mine is dark and relatively narrow, it is quite inconvenient to unlock. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the utility model is to provide an underground side-dumping car anti-disengagement self-locking device which meets the self-locking connection requirements between the cars and has the characteristics of convenient use and maintenance.

[0006] To solve the above problems, the utility model adopts the following technical scheme:

[0007] An underground side-dumping car anti-disengagement self-locking device, comprising a car connecting arm, a pin shaft and a locking block, an installation hole for installing the pin shaft is formed in the car connecting arm, an installation plate is fixedly installed at the edge of the installation hole, the locking block is rotatably installed on the installation plate, a pin shaft round head is arranged on the pin shaft, characterized in that: the locking block comprises a locking part and a self-locking part, the center of gravity of the locking block is located on the self-locking part, a right-angle opening matched with the pin shaft round head is formed in the locking part.

[0008] Further, a quick-release opening corresponding to the position of the installation plate is formed in the pin shaft round head.

[0009] Further, a pull ring is fixedly installed on the pin shaft round head.

[0010] Compared with the prior art, the utility model has the advantages of:

[0011] First, the utility model has the advantages of simple structure, convenient installation, and the like.

[0012] Second, the utility model is more stable, and the locking part of the improved locking block is provided with a right-angle opening matched with the pin shaft source, so that the locking is more stable.

[0013] Third, the utility model provides two unlocking modes of the quick-release opening and the turnover locking block for the rotating pin shaft, so that the utility model is convenient to use in different scenes. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a front view structural schematic diagram of the utility model;

[0015] Figure 2 It is a top view structural schematic diagram of the utility model;

[0016] Figure 3 It is a locking block structural schematic diagram of the utility model.

[0017] In the drawing: 1. Mine car connecting arm; 2. Pin shaft; 2-1. Pin shaft round head; 2-2. Pull ring; 2-3. Quick-release opening; 3. Locking block; 3-1. Self-locking part; 3-2. Locking part; 3-3. Right-angle opening; 4. Mounting plate. DETAILED DESCRIPTION

[0018] The utility model is further described below in combination with the drawings.

[0019] As Figure 1 and Figure 3 the utility model includes the pin shaft 2 that is installed in the mounting hole on the mine car connecting arm 1, the pin shaft 2 is provided with the pin shaft round head 2-1 of side face protrusion one end, the pin shaft round head 2-1 is fixedly installed with the pull ring 2-2;

[0020] The two sides of the mounting hole on the mine car connecting arm 1 are fixedly installed with a plurality of mounting plates 4, the locking block 3 is rotatably connected on the mounting plate 4, the locking block 3 is divided into the locking part 3-2 and the self-locking part 3-1, and the center of gravity of the locking block 3 is located on the self-locking part 3-1;The locking part 3-2 is provided with the right-angle opening 3-3 for cooperating with the pin shaft round head 2-1.

[0021] As Figure 2 the pin shaft round head 2-1 is also provided with the quick-release opening 2-3 corresponding to the number and position of the mounting plate 4, when the quick-release opening 2-3 directly faces the mounting plate 4, the pin shaft 2 can be directly pulled out, so that the quick disassembly is facilitated.

[0022] When installing, align the mounting holes on the mine car connecting arm 1, insert the pin shaft 2, and during the insertion process, the round head 2-1 of the pin shaft contacts the locking portion 3-2 of the locking block 3, which drives the locking block 3 to rotate towards the direction of the mounting hole, causing the self-locking portion 3-1 of the locking block 3 to be raised; when the round head 2-1 of the pin shaft continues to move downward and disengages from the locking portion 3-2 of the locking block 3, due to the center of gravity of the locking block 3 being located on the self-locking portion 3-1, the self-locking portion 3-1 drives the locking block 3 to rotate in the opposite direction, at this time, the right-angle opening 3-3 on the locking portion 3-2 of the locking block 3 is located above the round head 2-1 of the pin shaft.

[0023] When the mine car is running, the pin shaft 2 is upwardly active due to jolting, the round head 2-1 of the pin shaft contacts the right-angle opening 3-3 of the locking portion 3-2, which drives the locking portion 3-2 to rotate upwardly, since the locking block 3 is rotationally connected with the mounting plate 4, the self-locking portion 3-1 is caused to rotate downwardly, and the self-locking portion 3-1 contacts the mine car connecting arm 1 and cannot rotate, which limits the rotation of the locking portion 3-2 and plays a limiting role on the active range of the pin shaft 2, avoiding the pin shaft 2 from being pulled out of the mounting hole, thereby achieving the locking purpose.

[0024] The utility model has two unlocking modes, under normal circumstances, the pin shaft 2 is rotated by pulling ring 2-2, the quick release opening 2-3 on the pin shaft 2 is aligned with the position of the mounting plate 4, the pin shaft 2 can be directly pulled out, and quick unlocking is completed.

[0025] When the pin shaft 2 is difficult to rotate, the locking block 3 can also be rotated, the self-locking portion 3-1 of the locking block 3 is rotated above the round head 2-1 of the pin shaft 2, the pulling ring 2-2 is pulled, and the pin shaft 2 can be directly pulled out, and unlocking is completed.

Claims

1. A self-locking device for preventing unhooking of a side-discharge mine car in an underground mine, comprising a mine car connecting arm (1), a pin (2), and a locking block (3), wherein the mine car connecting arm (1) is provided with a mounting hole for mounting the pin (2), a mounting plate (4) is fixedly mounted on the edge of the mounting hole, and the locking block (3) is rotatably mounted on the mounting plate (4), and a pin head (2-1) is provided on the pin (2), characterized in that: The locking block (3) includes a locking part (3-2) and a self-locking part (3-1). The center of gravity of the locking block (3) is located on the self-locking part (3-1). The locking part (3-2) has a right-angle opening (3-3) that cooperates with the round head (2-1) of the pin.

2. The anti-disengagement self-locking device for underground side-discharging mine cars as described in claim 1, characterized in that: The pin head (2-1) has a quick-release opening (2-3) corresponding to the position of the mounting plate.

3. The anti-disengagement self-locking device for underground side-discharging mine cars as described in claim 1, characterized in that: A pull ring (2-2) is also fixedly installed on the round head (2-1) of the pin.

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