A mine car latch anti-drop device

Abstract

The utility model relates to the field of mine car bolt, specifically relates to a mine car bolt anti -drop device, including bolt, first connecting piece and second connecting piece, the top rotation of first connecting piece is installed with anti -drop baffle, the axis of rotation of anti -drop baffle extends vertically, the outer wall of the bolt located above first connecting piece is equipped with annular baffle, rotates anti -drop baffle to the top of annular baffle to restrict the bolt to move up and drop, still be equipped with the locking structure for restricting the rotation of anti -drop baffle on anti -drop baffle, the elastic force of locking spring is overcome to pull up the locking pin and makes it separate from the pinhole, then can rotate anti -drop baffle and make it deviate from the top of annular baffle, or the elastic force of support spring is overcome to press down the bolt, makes the thin column to move to the same height with anti -drop baffle and keeps, then rotates anti -drop baffle and makes the thin column to move out through hole through the bolt, and anti -drop baffle deviates from the top of annular baffle, then can pull out the bolt.

Description

Technical Field

[0001] This utility model relates to the field of mine car pins, specifically to a mine car pin anti-detachment device. Background Technology

[0002] In underground transportation systems, mine cars are crucial transport vehicles, and the various mine cars are typically connected by mine car pins. However, during mine car operation, these pins are prone to loosening or even falling off due to bumps and vibrations, posing a certain safety hazard.

[0003] In the prior art, utility model patent application number CN202320574814.0 discloses an anti-detachment device for a mine car connecting pin, including a connecting pin, a mine car connecting plate, and an anti-detachment stop. The anti-detachment stop includes a fixed screw, a movable baffle inserted in the fixed screw, and a fixed nut. The fixed screw is fixedly connected to the mine car connecting plate. A sleeve is fitted on the fixed screw at the position below the movable baffle, and the fixed nut is set at the position above the movable baffle on the fixed screw.

[0004] The aforementioned anti-detachment device for the mine car connecting pin effectively prevents the pin from falling off by rotating a movable baffle into the top cover at the tip of the connecting pin. However, this anti-detachment device requires a tool to loosen the fixing nut before rotating the movable baffle each time the mine car pin is inserted or removed, making it inconvenient to use. Utility Model Content

[0005] The purpose of this utility model is to provide a mine car pin anti-detachment device, which facilitates the adjustment of the anti-detachment baffle to solve the defects mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A mine car pin anti-detachment device includes a pin, a first connector, and a second connector. The pin passes vertically through the first connector and the second connector. An anti-detachment baffle is rotatably mounted on the top of the first connector. The axis of rotation of the anti-detachment baffle extends vertically. An annular baffle is provided on the outer wall of the pin above the first connector. Rotating the anti-detachment baffle above the annular baffle restricts the pin from moving upward and falling off. The anti-detachment baffle is also provided with a locking structure for restricting the rotation of the anti-detachment baffle.

[0007] As a further improvement, the top of the first connector is threaded with a vertically extending plug bolt, and a rotating sleeve is fixedly installed on the anti-detachment baffle, the rotating sleeve being rotatably mounted on the optical axis of the plug bolt.

[0008] As a further improvement, the locking structure includes a locking pin that is vertically slidably mounted on the anti-detachment baffle, and the top of the first connector is provided with a pin hole for the locking pin to be inserted; a limiting plate is fixedly mounted on the locking pin located below the anti-detachment baffle, and a locking spring is sleeved on the locking pin located between the limiting plate and the anti-detachment baffle.

[0009] As a further improvement, the anti-detachment baffle has an opening groove on its horizontal side for the pin to enter. The opening groove is an arc extending around the circumference of the locking bolt, and the width of the opening groove along the radial direction of the locking bolt is smaller than the outer diameter of the annular baffle. When the lower end of the locking pin is inserted into the pin hole, the pin enters the opening groove.

[0010] As a further improvement, the locking structure includes a thin post coaxially disposed at the upper end of the pin, the outer diameter of the thin post being smaller than the outer diameter of the pin; the anti-disengagement baffle is provided with a through hole for the pin to pass through, and a narrow opening is provided on the horizontal side of the anti-disengagement baffle for the thin post to enter the through hole, the narrow opening being an arc extending circumferentially around the plug bolt, the width of the narrow opening along the radial direction of the plug bolt being smaller than the outer diameter of the pin; a support spring is sleeved on the pin located between the annular baffle and the top of the first connector.

[0011] Compared with the prior art, the beneficial effects of this utility model are: Overcome the spring force of the locking spring and pull the locking pin upward to disengage it from the pin hole. Then, rotate the anti-disengagement baffle to make it deviate from the top of the annular baffle, and then pull out the pin. Alternatively, overcome the spring force of the support spring and press the pin downward to move the thin post down to the same height as the anti-disengagement baffle and hold it there. Then, rotate the anti-disengagement baffle around the plug bolt to move the thin post out of the through hole through the narrow opening. At the same time, the anti-disengagement baffle deviates from the top of the annular baffle, and then the pin can be pulled out. There is no need to tighten the bolt when installing or removing the pin, making it more convenient and faster to use. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present invention; Figure 2 yes Figure 1 A cross-sectional view; Figure 3This is a top view schematic diagram of the anti-detachment baffle of Embodiment 1 of this utility model; Figure 4 This is a schematic diagram of the structure of Embodiment 2 of this utility model; Figure 5 This is a top view schematic diagram of the anti-detachment baffle of Embodiment 2 of this utility model.

[0014] In the diagram: 1-Pin; 2-First connector; 3-Second connector; 4-Upper mounting plate; 5-Lower mounting plate; 6-Anti-detachment baffle; 7-Plug bolt; 8-Rotating sleeve; 9-Annular baffle; 10-Mounting hole; 11-Locking pin; 12-Pin hole; 13-Limiting plate; 14-Locking spring; 15-Thin post; 16-Through hole; 17-Narrow opening; 18-Support spring; 19-Opening slot. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Example 1: like Figures 1 to 3 As shown, a mine car pin anti-detachment device includes a pin 1, a first connecting member 2, and a second connecting member 3, which are respectively disposed at opposite ends of the mine car. The first connecting member 2 includes an upper mounting plate 4 and a lower mounting plate 5 located below it. A vertical plate is welded between the left ends of the upper mounting plate 4 and the lower mounting plate 5. The right ends of the upper mounting plate 4 and the lower mounting plate 5 are provided with mounting grooves for the second connecting member 3 to be inserted. The upper mounting plate 4, the lower mounting plate 5, and the second connecting member 3 are all provided with insertion holes for the pin 1 to pass through. The pin 1 passes through the upper mounting plate 4, the second connecting member 3, and the lower mounting plate 5 from top to bottom.

[0017] An anti-detachment baffle 6 is rotatably mounted on the top of the upper mounting plate 4. The axis of rotation of the anti-detachment baffle 6 extends vertically, and the pin 1 is located on the rotation trajectory of the anti-detachment baffle 6. A plug bolt 7 is provided on the left side of the pin 1. The plug bolt 7 consists of a bolt head, a smooth shaft, and a threaded post from top to bottom. The threaded post at the lower end of the plug bolt 7 is threadedly connected to the upper mounting plate 4. A rotating sleeve 8 is welded onto the anti-detachment baffle 6. The rotating sleeve 8 vertically penetrates the anti-detachment baffle 6 and is rotatably mounted on the smooth shaft of the plug bolt 7.

[0018] An annular baffle 9 is integrally formed on the outer wall of the pin 1 located above the upper mounting plate 4. The thickness of the annular baffle 9 is less than the distance between the anti-detachment baffle 6 and the top of the upper mounting plate 4. After the pin 1 passes through the first connector 2 and the second connector 3, the anti-detachment baffle 6 is rotated around the plug bolt 7 so that the anti-detachment baffle 6 partially covers the top of the annular baffle 9. When the annular baffle 9 contacts the bottom of the anti-detachment baffle 6, the lower end of the pin 1 will not detach from the lower mounting plate 5, thereby preventing the pin 1 from falling off due to bumps. In this embodiment, the distance between the anti-detachment baffle 6 and the top of the upper mounting plate 4 is the same as or slightly greater than the thickness of the annular baffle 9, thereby reducing the amount of vertical movement of the pin 1.

[0019] The anti-detachment baffle 6 is also provided with a locking structure for limiting the rotation of the anti-detachment baffle 6. In this embodiment, the locking structure includes a vertically penetrating mounting hole 10 located at the left end of the anti-detachment baffle 6. A locking pin 11 is vertically slidably installed in the mounting hole 10. The top of the upper mounting plate 4 is provided with a pin hole 12 for the locking pin 11 to be inserted. By inserting the locking pin 11 into the pin hole 12, the rotation of the anti-detachment baffle 6 around the plug bolt 7 is limited. A limiting plate 13 is integrally formed on the locking pin 11 located below the anti-detachment baffle 6. A locking spring 14 is sleeved on the locking pin 11 located between the limiting plate 13 and the anti-detachment baffle 6. The locking spring 14 gives the limiting plate 13 and the locking pin 11 a downward pushing force to prevent the locking pin 11 from accidentally disengaging from the pin hole 12.

[0020] In this embodiment, the right front end of the anti-detachment baffle 6 is provided with an opening groove 19 for the insertion of the pin 1. The opening groove 19 is an arc extending around the circumference of the plug bolt 7. The width D1 of the opening groove 19 along the radial direction of the plug bolt 7 is smaller than the outer diameter of the annular baffle 9. When the lower end of the locking pin 11 is inserted into the pin hole 12, the pin 1 enters the opening groove 19. The anti-detachment baffle 6 blocks the annular baffle 9 located below the periphery of the opening groove 19, thereby preventing the pin 1 from moving upward and falling off.

[0021] In this embodiment, the locking pin 11 is pulled upward against the elastic force of the locking spring 14 to disengage it from the pin hole 12. Then, the anti-disengagement baffle 6 can be rotated to deviate from the top of the annular baffle 9, and then the pin 1 can be pulled out.

[0022] Example 2: like Figure 4 and Figure 5As shown, the difference between this embodiment and Embodiment 1 is that the locking structure includes a thin post 15 coaxially disposed at the upper end of the pin 1, the thin post 15 being integrally formed with the pin 1, and the outer diameter of the thin post 15 being smaller than the outer diameter of the pin 1; the right end of the anti-detachment baffle 6 is provided with a through hole 16 for the pin 1 to pass through, the through hole 16 being vertically through, the diameter of the through hole 16 being smaller than the outer diameter of the annular baffle 9, and the front right side of the anti-detachment baffle 6 is provided with a narrow opening 17 for the thin post 15 to enter the through hole 16, the narrow opening 17 being an arc extending circumferentially around the plug bolt 7, and the width D2 of the narrow opening 17 along the radial direction of the plug bolt 7 being smaller than the outer diameter of the pin 1; a support spring 18 is sleeved on the pin 1 located between the top of the annular baffle 9 and the top of the upper mounting plate 4. In this embodiment, the distance between the top of the anti-detachment baffle 6 and the top of the upper mounting plate 4 is much greater than the thickness of the annular baffle 9, leaving room for the vertical movement of the pin 1 and the annular baffle 9.

[0023] When installing the pin 1, pass the pin 1 through the support spring 18, the upper mounting plate 4, the second connector 3, and the lower mounting plate 5 in sequence. Then, overcome the elastic force of the support spring 18 and continue to press the pin 1 downward, so that the thin post 15 moves down to the same height as the anti-detachment baffle 6 and remains there. Rotate the anti-detachment baffle 6 around the plug bolt 7, so that the thin post 15 enters the through hole 16 through the narrow opening 17. Then, stop pressing the pin 1, and the support spring 18 pushes the pin 1 upward and inserts the pin 1 above the annular baffle 9 into the through hole 16. The insertion of the pin 1 into the through hole 16 restricts the rotation of the anti-detachment baffle 6 around the plug bolt 7. At the same time, the anti-detachment baffle 6 covers the top of the annular baffle 9 and restricts the pin 1 from continuing to move upward and fall off.

[0024] Alternatively, when disassembling the pin 1, press the pin 1 downwards against the elastic force of the support spring 18, so that the thin post 15 moves down to the same height as the anti-disengagement baffle 6 and remains there. Then rotate the anti-disengagement baffle 6 around the plug bolt 7, so that the thin post 15 moves out of the through hole 16 through the narrow opening 17. At the same time, the anti-disengagement baffle 6 deviates from the top of the annular baffle 9, and then the pin 1 can be pulled out.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A mine car pin anti-detachment device, characterized in that: The device includes a pin, a first connector, and a second connector. The pin passes vertically through the first connector and the second connector. An anti-detachment baffle is rotatably mounted on the top of the first connector. The axis of rotation of the anti-detachment baffle extends vertically. An annular baffle is provided on the outer wall of the pin located above the first connector. Rotating the anti-detachment baffle above the annular baffle restricts the pin from moving upward and falling off. The anti-detachment baffle is also provided with a locking structure for restricting the rotation of the anti-detachment baffle.

2. The mine car pin anti-detachment device as described in claim 1, characterized in that: The top of the first connector is threaded with a vertically extending plug bolt, and a rotating sleeve is fixedly installed on the anti-detachment baffle. The rotating sleeve is rotatably mounted on the optical axis of the plug bolt.

3. The mine car pin anti-detachment device as described in claim 2, characterized in that: The locking structure includes a locking pin that is vertically slidably mounted on the anti-detachment baffle. The top of the first connector is provided with a pin hole for the locking pin to be inserted. A limiting plate is fixedly mounted on the locking pin located below the anti-detachment baffle. A locking spring is sleeved on the locking pin located between the limiting plate and the anti-detachment baffle.

4. The mine car pin anti-detachment device as described in claim 3, characterized in that: The anti-detachment baffle has an opening groove on its horizontal side for the pin to enter. The opening groove is an arc extending around the circumference of the locking bolt. The width of the opening groove along the radial direction of the locking bolt is smaller than the outer diameter of the annular baffle. When the lower end of the locking pin is inserted into the pin hole, the pin enters the opening groove.

5. A mine car pin anti-detachment device as described in claim 2, characterized in that: The locking structure includes a thin post coaxially disposed at the upper end of the pin, the outer diameter of the thin post being smaller than the outer diameter of the pin; the anti-disengagement baffle has a through hole for the pin to pass through, and a narrow opening on the horizontal side of the anti-disengagement baffle for the thin post to enter the through hole, the narrow opening being an arc extending circumferentially around the plug bolt, the width of the narrow opening along the radial direction of the plug bolt being smaller than the outer diameter of the pin; a support spring is sleeved on the pin located between the annular baffle and the top of the first connector.

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