Novel automatic hook for mine car

Abstract

The utility model provides a novel mine car automatic hook which is used for solving the problems that in the prior art, a plug pin is prone to loosening and falling off, and connection is complex. The automatic hook comprises a front connecting hook and a rear connecting hook, the front connecting hook and the rear connecting hook are both of the same structure, the connecting hook comprises a cavity, one end of the cavity is rotationally connected with a mine car through a connecting shaft, the cavity is rotationally connected with a hook through a rotating shaft, the hook comprises a hook head, a hook body, a hook cavity and a hook lock, and the rotating shaft is sleeved with the hook lock. A positioning pin is arranged on one side of the cavity in a penetrating mode, a positioning groove for the positioning pin to penetrate is formed in the side wall of the hook lock, a spring is sleeved on the positioning pin, the spring enables the positioning pin to abut against the hook lock, one end, away from the hook head, of the hook lock is connected with the cavity through a reset tension spring, and an outer arc surface is arranged on the outer side face of the hook head. Through the outer arc surface of the hook head and the action of the spring and the reset tension spring, the safety of the mine car in the transportation process is jointly ensured, and quick butt joint of the mine car can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of mine transportation devices, in particular to a novel automatic hook for a mine car. Background Art

[0002] Mine cars are important means of transportation in mine production. The connection between mine cars relies on connecting pins and three-ring chains. The three-ring chain is the main component for connecting narrow-gauge railway transportation vehicles on the ground and underground tunnels in my country. When in use, the three-ring chain is placed between the two cars, and then the two ends of the three-ring chain and the upper and lower pin holes of the end seats of the two cars are connected together by the pins, and then the pins are locked. If the pins are not locked correctly or loose during operation, the mine car may be unhooked, causing serious accidents. In addition, the three-ring chain needs to be placed manually and connected to the mine car by the pins. This process is time-consuming and complicated to operate. The reliability and convenience of existing connection methods directly affect production efficiency and transportation safety. Utility Model Content

[0003] The utility model provides a novel automatic hook for a mining car, which solves the problems in the prior art that a latch is easy to loosen and fall off and the connection is relatively complicated.

[0004] The technical solution of the utility model is achieved in this way:

[0005] A new type of automatic hook for a mine car comprises a front connecting hook and a rear connecting hook, both of which have the same structure. The connecting hook comprises a cavity, one end of the cavity is rotatably connected to the mine car through a connecting shaft, the cavity is rotatably connected to the hook through the rotating shaft, the hook comprises a hook head, a hook body and a hook lock, the hook lock is sleeved on the rotating shaft, the hook head, the hook body and the hook lock are connected to form a hook cavity, a locating pin is passed through one side of the cavity, a locating groove is provided on the side wall of the hook lock for the locating pin to pass through, a spring is sleeved on the locating pin, the spring makes the locating pin and the hook lock resist each other, the end of the hook lock away from the hook head is connected to the cavity through a reset tension spring, the reset tension spring makes the hook head rotate in the direction the hook head is facing, and the outer side surface of the hook head is provided with an outer arc surface.

[0006] Furthermore, a boss is provided on the top surface of the hook lock, and the side of the boss is a beveled edge, and the positioning pin slides on the boss and the hook lock through the beveled edge, and the positioning groove is provided on the top surface of the boss. The inclined surface of the boss provides an oblique resistance for the positioning groove, which helps to prevent the positioning pin from being locked in advance when the hooks are against each other and need to be rotated, thereby ensuring that the front connecting hook and the rear connecting hook can be smoothly connected.

[0007] Furthermore, there are multiple reset tension springs. By using multiple reset tension springs, the force of a single tension spring can be shared, and the fatigue and damage risks of the tension springs can be reduced, thereby extending the service life of the connecting hook.

[0008] Furthermore, the end of the positioning pin close to the hook lock is chamfered, which makes it easier for the positioning pin to move along the bevel of the boss, so that the connection process is smoother and smoother, thereby ensuring the reliability of the connection and improving the work efficiency.

[0009] Furthermore, the end of the positioning pin away from the hook lock is provided with a pattern. When working underground, the environment is often slippery, and the presence of the pattern can effectively prevent the positioning pin from slipping in the hand, reducing the possibility of operating errors. It can also help the operator quickly identify the position of the positioning pin.

[0010] Beneficial effects:

[0011] The utility model ensures the stability of the hook after connection through the reset tension spring and the positioning pin. Once the interlocking is formed, the reset tension spring will apply tension to keep the hook in the locked state, and the positioning pin will be inserted into the positioning groove under the action of the spring, further enhancing the stability of the connection and effectively preventing safety accidents caused by accidental opening of the hook during transportation. The outer arc surface allows the hook heads to rotate smoothly when they contact each other, avoiding damage or jamming caused by hard collision. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a top view when the front connecting hook and the rear connecting hook are disconnected;

[0014] Figure 2 A top view of the front connecting hook and the rear connecting hook when connected;

[0015] Figure 3 It is a schematic diagram of the position of the locked state;

[0016] Figure 4 The position of the positioning pin during the process from locking to opening is shown in FIG.

[0017] Figure 5 This is a schematic diagram of the position in the open state.

[0018] Among them: 1. front connecting hook, 2. rear connecting hook, 3. cavity, 4. connecting shaft, 5. hook head, 6. hook body, 7. hook lock, 8. hook cavity, 9. rotating shaft, 10. positioning pin, 11. positioning groove, 12. spring, 13. reset tension spring, 14. outer arc surface, 15. boss. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] like Figure 1-5 As shown, the embodiment of the utility model provides a new type of automatic hook for a mine car, comprising a front connecting hook 1 and a rear connecting hook 2, both of which are connecting hooks with the same structure, the connecting hook comprising a cavity 3, one end of the cavity 3 is rotatably connected to the mine car through a connecting shaft 4, the cavity 3 is rotatably connected with a hook through a rotating shaft 9, the hook comprises a hook head 5, a hook body 6 and a hook lock 7, the hook lock 7 is sleeved on the rotating shaft 9, the hook head 5, the hook body 6 and the hook lock 7 are connected to form a hook cavity 8, a locating pin 10 is penetrated on one side of the cavity 3, a locating groove 11 for the locating pin 10 to penetrate is provided on the side wall of the hook lock 7, a spring 12 is sleeved on the locating pin 10, the spring 12 makes the locating pin 10 resist against the hook lock 7, the end of the hook lock 7 away from the hook head 5 is connected to the cavity 3 through a reset tension spring 13, the reset tension spring 13 makes the hook head 5 rotate in the direction of the hook head 5, and the outer side surface of the hook head 5 is provided with an outer arc surface 14.

[0021] The front connecting hook 1 and the rear connecting hook 2 are respectively fixed on the adjacent surfaces of the two mining cars. When the front connecting hook 1 and the rear connecting hook 2 are not closed and connected, the positioning pin 10 is placed outside the positioning groove 11, and the spring 12 applies a thrust perpendicular to the hook lock 7. At this time, the positioning pin 10 can slide on the hook lock 7, and the hook can rotate along the rotating shaft 9. When the front connecting hook 1 and the rear connecting hook 2 need to be closed and connected, the front connecting hook 1 and the rear connecting hook 2 move toward each other, and the outer arc surface 14 of the hook head 5 of the front connecting hook 1 and the rear connecting hook 2 abuts and overcomes the tension of the reset tension spring 13, and rotates in the opposite direction to the direction of its own hook head 5. As the distance between the front connecting hook 1 and the rear connecting hook 2 is reduced, the hook head 5 enters the hook cavity 8 of the other connecting hook under the action of the tension of the reset tension spring 13, and the front connecting hook 1 and the rear connecting hook 2 form an interlocking relationship under the action of the tension of the reset tension spring 13. After the interlocking is completed, the locating pin 10 is placed on the locating groove 11, and under the action of the thrust of the spring 12, it is inserted into the locating groove 11 to achieve complete locking of the hook. If the connection between the mine cars needs to be disconnected, the locating pin 10 needs to be pulled out of the locating groove 11, and the hook can be rotated to open. The interlocking between the hooks is achieved by using the structure in which the reset tension spring 13 and the arc surface are against each other, which not only simplifies the operation process, but also improves the stability of the connection. The cooperation between the locating pin 10 and the locating groove 11, combined with the thrust of the spring 12, realizes the automatic locking of the hook and provides additional safety protection. When the mine car needs to be separated, the hook can be unlocked by simply pulling the locating pin 10, making the connection and disconnection between the mine cars quick and easy. Since the front connecting hook 1 and the rear connecting hook 2 have the same structure, they can be used interchangeably, which improves the versatility and flexibility of the equipment.

[0022] like Figure 3-5 As shown, the top surface of the hook lock 7 is provided with a boss 15, the side of the boss 15 is a bevel, the positioning pin 10 slides on the boss 15 and the hook lock 7 through the bevel, and the positioning groove 11 is provided on the top surface of the boss 15. The inclined surface of the boss 15 can apply a certain resistance to the positioning groove 11, thereby effectively preventing the positioning pin 10 from prematurely locking the hook lock 7 when the front connecting hook 1 and the rear connecting hook 2 are against each other at the hook head 5 and need to be rotated for docking, resulting in the inability to complete the docking, thereby increasing the flexibility and smoothness of the connection operation. The inclined boss 15 plays a guiding role, reducing the risk of the hook lock 7 being locked by mistake due to improper operation.

[0023] There are several reset springs 13. Several reset springs 13 can provide more uniform and powerful inward rotation tension, ensure stable interlocking between the front connecting hook 1 and the rear connecting hook 2, and reduce the risk of accidental opening of the hook due to vibration or impact during transportation. By increasing the number of reset springs 13, even if individual springs fail, other springs can still maintain the stability of the connection, thereby improving the reliability of the entire system. Multiple reset springs 13 can disperse the pressure generated by the hook lock 7 at regular intervals, avoid excessive load on a single spring, and extend the service life of the spring.

[0024] like Figure 3-5 As shown, the end of the positioning pin 10 close to the hook lock 7 is chamfered. The chamfered bevel can facilitate the positioning pin 10 to move along the bevel of the boss 15, making the connection smoother, and the chamfer can provide a guide for the positioning pin 10 to enter the positioning groove 11, so that the positioning pin 10 can enter the positioning groove 11 more smoothly, ensuring the stable interlocking of the front connecting hook 1 and the rear connecting hook 2, and enhancing the stability of the overall structure.

[0025] like Figure 3-5 As shown, the end of the positioning pin 10 away from the hook lock 7 is provided with a pattern. When working underground, the environment may be damp, greasy or affected by other substances. The pattern provides additional friction, so that the positioning pin 10 can be better gripped when manually removing it, reducing the risk of slipping during operation. In addition, the pattern can also make the positioning pin 10 more visually eye-catching, which is convenient for quick identification in the dim environment underground, reducing the time wasted in finding the positioning pin 10 and improving work efficiency.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel automatic hook for a mine car, comprising a front connecting hook (1) and a rear connecting hook (2), characterized in that: The front connecting hook (1) and the rear connecting hook (2) are both connecting hooks of the same structure. The connecting hook comprises a cavity (3). One end of the cavity (3) is rotatably connected to the mining car through a connecting shaft (4). The cavity (3) is rotatably connected to a hook through a rotating shaft (9). The hook comprises a hook head (5), a hook body (6) and a hook lock (7). The hook lock (7) is sleeved on the rotating shaft (9). The hook head (5), the hook body (6) and the hook lock (7) are connected to form a hook cavity (8). A fixed A positioning pin (10) is provided on the side wall of the hook lock (7) for the positioning pin (10) to penetrate into a positioning groove (11), a spring (12) is sleeved on the positioning pin (10), the spring (12) makes the positioning pin (10) and the hook lock (7) abut against each other, the end of the hook lock (7) away from the hook head (5) is connected to the cavity (3) through a reset tension spring (13), the reset tension spring (13) makes the hook head (5) rotate in the direction in which the hook head (5) is facing, and the outer side surface of the hook head (5) is provided with an outer arc surface (14).

2. A novel automatic hook for mining vehicles according to claim 1, characterized in that: The top surface of the hook lock (7) is provided with a boss (15), the side of the boss (15) is a bevel, the positioning pin (10) slides on the boss (15) and the hook lock (7) through the bevel, and the positioning groove (11) is arranged on the top surface of the boss (15).

3. A novel automatic hook for mining vehicles according to claim 1, characterized in that: There are a plurality of return tension springs (13).

4. A novel automatic hook for mining vehicles according to claim 1, characterized in that: The end of the positioning pin (10) close to the hook lock (7) is provided with a chamfer.

5. The novel automatic hook for mining vehicles according to claim 1 is characterized by: One end of the positioning pin (10) away from the hook lock (7) is provided with a pattern.

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