Railway multifunctional folding hand crank

Abstract

The utility model discloses a railway multifunctional folding hand crank handle applied to railway freight vehicle operation, which is used for realizing the fastening operation of the human brake fastener and the opening and closing operation of the angle plug door. The hand crank handle is mainly composed of anti-skid handles, folding connecting rods, oval rings, sleeve heads and related connecting pieces. The two anti-skid handles are provided with anti-skid pads on the surfaces. The front anti-skid handle is provided with an oval ring at the end, the inner diameter of the ring is matched with the size of the handle of the angle plug door, so as to perform the opening and closing action of the angle plug door. The folding connecting rods are connected between the front and rear anti-skid handles. The rear anti-skid handle is provided with a sleeve head at the end, and the inside of the sleeve head is a regular pentagon groove, which is matched with the regular pentagon column of the end of the conventional human brake fastener. The utility model has the advantages of simple structure, function integration, convenient carrying and simple operation.

Description

Technical Field

[0001] The utility model relates to a multifunctional foldable hand crank for railways, which is applied to the tightening operation of manual brake tighteners and the opening and closing operation of angle cocks for railway freight vehicles. Background Art

[0002] As the railway transportation industry continues to develop towards high efficiency, convenience and safety, higher standards have been put forward for the safety and operation convenience of each link of on-site operation. In the operation safety of railway freight vehicles, anti-slip operation is one of the key links, and the applicability of its operating tools directly affects the operation efficiency and risk control. The manual brake tightener used in this operation needs to be operated with a special hand crank: the wrench head at the front end of the hand crank is embedded into the pentagonal driving column at the end of the tightener, and by rotating the handle clockwise or counterclockwise, the pull rod moves axially relative to the object clamped by the jaw, which in turn drives the brake chain to tighten or loosen, and finally realizes the braking or releasing function of the brake. The existing hand crank has a single function, can only complete the tightening and loosening operations of the manual brake, and is difficult to cope with the multi-step tasks often involved in anti-slip operations. In addition, the rocker arm part is of a fixed structure, which has a large length and is inconvenient to carry; when used for a bottom-operated coupler, it is also necessary to manually lift the uncoupling lifting rod before rotating the hand crank, and reset it after the operation is completed. This process not only reduces the operation efficiency, but also introduces potential safety hazards. Therefore, it is urgent to develop a new type of hand crank with compact structure, easy portability and multiple operation functions to meet the actual requirements of current railway operations. Summary of the Invention

[0003] In order to make up for the defects of the prior art, the utility model provides a short-rocker arm portable multifunctional foldable hand crank for railways that can open and close the angle cock on the other side without climbing over the vehicle.

[0004] The technical solution provided by the utility model is: a multifunctional foldable hand crank for railways, which is applied to the tightening operation of manual brake tighteners and the opening and closing operation of angle cocks for railway freight vehicles. It is characterized in that it mainly consists of a front anti-slip grip (1), a folding connecting rod (3), and a rear anti-slip grip (2); the front anti-slip grip (1) is provided with a front anti-slip pad (12), and the rear anti-slip grip (2) is provided with a rear anti-slip pad (23); an elliptical collar (13) is located at the end of the front anti-slip grip (1), the inner dimension of which is equivalent to that of an angle cock handle, and can be used for opening and closing the angle cock; the folding connecting rod (3) is located in the middle of the hand crank; a regular pentagonal socket head (22) is located at the end of the rear anti-slip grip (2), the inner part of which is regular pentagonal, and its dimension matches the regular pentagonal column at the end of a conventional manual brake tightener.

[0005] The elliptical collar (13) is connected to the end of the front anti-slip grip (1) and can rotate 180° horizontally.

[0006] The front anti-slip grip (1) is connected to the folding link (3) via the front screw locking mechanism (11), and the rear anti-slip grip (2) is connected to the folding link (3) via the rear screw locking mechanism (21). The front anti-slip grip (1) and the rear anti-slip grip (2) can rotate relative to the folding link (3) within an angle range of 0° to 180°, and can be fixed at 0°, 90° and 180° respectively by locking the front threaded pin 1101 and the rear threaded pin 2101.

[0007] Compared with the prior art, the present invention has the following advantages: 1. This hand crank allows for opening and closing of the other side angle latch without having to climb over the vehicle, avoiding safety hazards caused by workers climbing over the vehicle; 2. Simple structure, integrated functions, easy to carry, and simple to operate; 3. The operation process has been optimized, allowing for direct operation on various types of hooks, ensuring safety and efficiency; 4. The handle is equipped with an anti-slip sleeve to prevent the hand crank from falling off during operation. Attached Figure Description

[0008] Figure 1 This is a perspective view of the multi-functional folding hand crank for railways according to this utility model.

[0009] Figure 2 This is a front view of the screw locking mechanism of this utility model.

[0010] Figure 3 This is a side view of the front anti-slip grip of this utility model.

[0011] Figure 4 This is a three-dimensional view of the elliptical collar of this utility model.

[0012] The markings in the diagram are: 1. Front anti-slip grip; 11. Front screw locking mechanism; 1101. Threaded pin; 12. Front anti-slip pad; 13. Oval collar; 2. Rear anti-slip grip; 21. Rear screw locking mechanism; 22. Sleeve head; 23. Rear anti-slip pad; 3. Folding linkage. Detailed Implementation

[0013] like Figures 1-4 As shown; the present invention provides a technical solution: a multi-functional folding hand crank for railways, including a front anti-slip grip 1, a rear anti-slip grip 2 and a folding link 3; one end of the front anti-slip grip 1 is connected to the folding link 3 through a front screw locking mechanism 11; the other end of the folding link 3 away from the front anti-slip grip 1 is connected to the rear anti-slip grip 2 through a rear screw locking mechanism 21.

[0014] The front screw locking mechanism 11 is provided with three threaded locking holes 1102, which correspond to the 0°, 90° and 180° working positions of the front anti-slip grip 1, respectively.

[0015] The front screw locking mechanism 11 is equipped with a threaded pin 1101, which has an external thread that mates with the threaded locking hole.

[0016] The rear screw locking mechanism 21 has the same structure as the front screw locking mechanism 11.

[0017] The front anti-slip grip 1 has an elliptical collar 13 connected to the other end away from the folding link 3; the front anti-slip grip 1 and one end of the elliptical collar 13 are connected by a bearing, so that the elliptical collar 13 can rotate 180° horizontally.

[0018] The elliptical collar 13 has a cavity 1301.

[0019] The rear anti-slip grip 2 has a regular pentagonal sleeve head 22 at the other end away from the folding link 3.

[0020] The front anti-slip grip 1 is provided with a front anti-slip pad 12 near the elliptical collar 13; the rear anti-slip grip 2 is provided with a rear anti-slip pad 23 near the regular pentagonal sleeve head 22; the front anti-slip pad 12 and the rear anti-slip pad 23 prevent the hand crank from falling off during operation.

[0021] The folding link 3 is connected to the front anti-slip grip 1 and the rear anti-slip grip 2 at its front and rear ends through the front screw locking mechanism 11 and the rear screw locking mechanism 21, respectively. The front anti-slip grip 1 and the rear anti-slip grip 2 can rotate relative to the folding link 3 within an angle range of 0° to 180°, and can be fixed at 0°, 90° and 180° respectively by locking the front threaded pin 1101 and the rear threaded pin 2101.

[0022] The pentagonal sleeve head 22 of the rear anti-slip grip 2 is matched with the size of the pentagonal prism at the end of a conventional manual brake fastener.

[0023] The working process of this utility model is as follows: When tightening or loosening the manual brake fastener, the operator first removes the hand crank from the safety belt, unscrews the pin 1101 of the front screw locking mechanism 11 from the 0° hole of the threaded locking hole 1102, grips the front anti-slip handle 1 and rotates it upwards by 90°, then inserts the pin 1101 into the 90° hole of the threaded locking hole and tightens it. Next, the operator unscrews the pin 2101 of the rear screw locking mechanism 21 from the 0° hole of the threaded locking hole 2102, grips the rear anti-slip handle 2 and rotates it downwards by 90°, then inserts the pin 2101 into the 90° hole of the threaded locking hole 2102 and tightens it, thus tightening the front anti-slip handle 1. Unfold the rear anti-slip grip 2 and folding linkage 3. Then, insert one end of the pentagonal sleeve head 22 of the rear anti-slip grip 2 into the pentagonal prism at the end of the manual brake fastener. Grip the front anti-slip grip 1 and rotate it clockwise or counterclockwise to rotate the pentagonal prism at the end of the manual brake fastener. This rotation of the pentagonal prism at the end of the manual brake fastener causes the nut on the pull rod to rotate. The pull rod moves forward or backward relative to the object clamped by the jaws. The rotation of the nut moves forward or backward along the pull rod, tightening or loosening the brake chain until the brake chain is fully tightened or fully loosened, thus completing the braking and releasing operation of the manual brake.

[0024] When opening and closing the angle plug, place the cavity 1301 of the oval collar 13 around the handle of the angle plug. Then, grip the anti-slip handle 2 and move it upwards, causing the oval collar 13 and the handle of the angle plug to move upwards until the handle is fully raised. After the handle is fully raised, the anti-slip handle 2 drives the oval collar 13 to rotate the handle of the angle plug, causing the handle to rotate 90°. Once at the desired position, press down on the handle of the angle plug again using the rear anti-slip grip 2 until the handle of the angle plug is completely down. Then remove the oval collar 11 from the handle of the angle plug. After the operation is completed, first unscrew the pins of the two screw locking mechanisms, then fold the front anti-slip grip 1, the rear anti-slip grip 2 and the folding linkage 3 again. Then insert the pins of the two screw locking mechanisms into the 0° holes of the threaded locking holes and tighten them. Then retract and hang them on the operator's safety belt.

[0025] This utility model discloses a multi-functional folding hand crank for railway freight vehicle operations, used to achieve both manual brake fastening and angle cock opening / closing operations. The hand crank mainly consists of a non-slip handle, a folding linkage, an elliptical collar, a sleeve head, and related connecting parts. There are two non-slip handles, front and rear, each with a non-slip pad. The front non-slip handle has an elliptical collar at its end, the inner diameter of which matches the size of the angle cock handle to perform the opening and closing action. A folding linkage connects the front and rear non-slip handles. The rear non-slip handle has a sleeve head at its end, with an internal pentagonal groove whose size matches the pentagonal prism at the end of a conventional manual brake fastener. This utility model integrates manual brake fastening and angle cock opening / closing functions, offering advantages such as simple structure, integrated functions, portability, and ease of operation.

[0026] The scope of protection of this utility model is not limited to the specific embodiments described above. Within the essential spirit and principles of this utility model, any modifications, additions, or equivalent substitutions made by those skilled in the art to the described embodiments, as long as they do not exceed the scope defined by the appended claims, shall be deemed to be included within the scope of protection of this utility model.

Claims

1. A multi-functional folding hand crank for railways, mainly composed of a front anti-slip grip (1), a folding linkage (3), and a rear anti-slip grip (2), characterized in that: The front anti-slip grip (1) is connected to a folding link (3) at one end, and the other end of the folding link (3) away from the front anti-slip grip (1) is connected to a rear anti-slip grip (2).

2. The multi-functional folding hand crank for railways according to claim 1, characterized in that: The folding link (3) is connected to the front anti-slip grip (1) through the front screw locking mechanism (11); the front screw locking mechanism (11) is provided with three threaded locking holes (1102), which correspond to the 0-degree, 90-degree and 180-degree working positions of the front anti-slip grip (1) respectively; the front screw locking mechanism (11) is equipped with a threaded pin (1101), which has an external thread that cooperates with the threaded locking hole (1102); the folding link (3) is connected to the rear anti-slip grip (2) through the rear screw locking mechanism (21), which has the same structure as the front screw locking mechanism (11).

3. A multi-functional folding hand crank for railways according to claim 2, characterized in that: The front anti-slip grip (1) is connected to an elliptical collar (13) at the other end away from the folding link (3) via a bearing; the elliptical collar (13) is provided with a sleeve cavity (1301).

4. A multi-functional folding hand crank for railways according to claim 3, characterized in that: The rear anti-slip grip (2) has a regular pentagonal sleeve head (22) at the other end away from the folding link (3).

5. A multi-functional folding hand crank for railways according to claim 4, characterized in that: The front anti-slip grip (1) is provided with a front anti-slip pad (12) near the elliptical collar (13); the rear anti-slip grip (2) is provided with a rear anti-slip pad (23) near the regular pentagonal sleeve head (22).

6. A multi-functional folding hand crank for railways according to claim 5, characterized in that: The pentagonal sleeve head (22) of the rear anti-slip grip (2) matches the size of the pentagonal prism at the end of a conventional manual brake fastener.

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