Portable flat hole round pin flattening device

Abstract

The utility model relates to the technical field of round pin flattening equipment, in particular to a portable flat hole round pin flattening device which comprises a flattening device body, and a first clamping plate is fixedly arranged on one side of the lower portion of the flattening device body. The second clamping plate is movably arranged at the lower part of the flattening device body and corresponds to the first clamping plate; the thread driving assembly is arranged on the lower portion of the flattening device body, and the output end of the thread driving assembly is fixedly connected with the second clamping plate; the device solves the problems that a traditional flattening device is poor in flexibility and high in maintenance cost.

Description

Technical Field

[0001] This utility model relates to the technical field of round pin clamping devices, specifically to a portable flat-hole round pin clamping device. Background Technology

[0002] The main connection method for railway freight cars in my country is the assembly connection of flat hole round pins and flat cotter pins. The document "Notice on Matters Related to the Standardization of Convenient Connection Scheme between Doors and Car Bodies of General Open Wagons" (JiLanHuoJianDian

[2025] No. 11) stipulates that from March 1, 2025, the doors and bodies of general open wagons shall adopt the flat hole round pin connection structure.

[0003] Currently, hydraulic equipment is often used to pressurize round pins and shape them into flat shapes. However, traditional hydraulic equipment requires a large investment, lacks flexibility, and is usually fixed to a specific work position. The oil pump of the hydraulic device needs to run continuously, resulting in energy waste. The equipment maintenance cost is high, and expensive consumable hydraulic clamps need to be replaced every few months. Utility Model Content

[0004] The purpose of this invention is to provide a portable flat-hole pin clamp that solves the problems of poor flexibility and high maintenance costs of traditional clamping devices.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] This utility model provides a portable flat-hole pin clamp, including a clamp body, a first clamp plate fixedly disposed on one side of the lower part of the clamp body; a second clamp plate, which is movably disposed at the lower part of the clamp body and corresponds to the first clamp plate; and a thread drive assembly, which is disposed at the lower part of the clamp body, and the output end of the thread drive assembly is fixedly connected to the second clamp plate.

[0007] Furthermore, the threaded drive assembly includes a threaded cylinder and a piston cylinder. The piston cylinder is fixedly disposed at the lower part of the flattener body. A movable push rod is provided inside the piston cylinder, and one end of the push rod is connected to the second clamping plate by a bolt.

[0008] Furthermore, the threaded cylinder is located on the side of the piston cylinder away from the second clamping plate, and the threaded cylinder is internally threaded with a threaded rod. One end of the threaded rod is in contact with the push rod, and the other end is provided with a groove.

[0009] Furthermore, a limiting cylinder is fixedly provided inside the piston cylinder, a push rod passes through the limiting cylinder, an annular protrusion is provided at the end of the push rod away from the limiting cylinder, and a return spring is provided between the limiting cylinder and the annular protrusion.

[0010] Furthermore, the reset spring is arranged around the outside of the top rod.

[0011] Furthermore, the groove is a square groove.

[0012] Technical effects of this utility model:

[0013] Compared with the prior art, the portable flat-hole pin clamp of this utility model greatly improves the portability of the device by setting up a convenient, flexible and compact clamp body and a threaded drive assembly. This allows the device to be placed in various toolboxes for easy on-site operation. Moreover, the manufacturing and maintenance costs of this device are low, making it economical and affordable. By setting up a threaded drive assembly, the rotational motion is converted into linear motion, and the small rotational force is converted into a large linear force, which can effectively flatten the pin. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a longitudinal sectional view of the present invention;

[0016] Figure 3 This is a top view of the present invention.

[0017] in:

[0018] 1. Flattening device body; 2. First clamping plate; 3. Second clamping plate; 4. Threaded drive assembly; 5. Threaded rod; 6. Groove; 41. Piston cylinder; 42. Push rod; 43. Return spring; 44. Limiting cylinder; 45. Bolt; 46. Threaded cylinder. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0020] Example:

[0021] like Figure 1-3As shown in the figure, the portable flat-hole pin clamping device described in this embodiment includes a clamping device body 1, a first clamping plate 2 fixedly disposed on one side of the lower part of the clamping device body 1; a second clamping plate 3, which is movably disposed at the lower part of the clamping device body 1 and corresponds to the first clamping plate 2. By controlling the movement of the second clamping plate 3, the pin can be clamped and released; and a threaded drive assembly 4, which is disposed at the lower part of the clamping device body 1. The output end of the threaded drive assembly 4 is fixedly connected to the second clamping plate 3, and the threaded drive assembly 4 is used to drive the second clamping plate 3 to move. By setting up a convenient, flexible and compact flat-hole pin clamping device body 1 and a threaded drive assembly 4, the portability of the device is greatly improved, allowing the device to be placed in various toolboxes for easy on-site operation. Moreover, the manufacturing and maintenance costs of this device are low, making it economical and affordable.

[0022] The threaded drive assembly 4 includes a threaded cylinder 46 and a piston cylinder 41. The piston cylinder 41 is fixedly disposed at the lower part of the flattening device body 1. A movable push rod 42 is provided inside the piston cylinder 41. One end of the push rod 42 is connected to the second clamping plate 3 by a bolt 45. The threaded cylinder 46 is disposed on the side of the piston cylinder 41 away from the second clamping plate 3. A threaded rod 5 is threadedly connected inside the threaded cylinder 46. One end of the threaded rod 5 fits against the push rod 42, and the other end is provided with a groove 6, which is a square groove. A limiting cylinder 44 is fixedly disposed inside the piston cylinder 41, and the push rod 42 passes through the limiting cylinder. The cylinder 44 has an annular protrusion at the end of the push rod 42 away from the limiting cylinder 44. A return spring 43 is provided between the limiting cylinder 44 and the annular protrusion. The return spring 43 is arranged around the outside of the push rod 42. When the second clamping plate 3 is driven to move, the threaded rod 5 is screwed in by an electric wrench or manually. The threaded rod 5 moves towards the push rod 42. Under the push of the threaded rod 5, the push rod 42 drives the second clamping plate 3 to move towards the first clamping plate 2. By setting the threaded drive assembly 4, the rotational motion is converted into linear motion, and the small rotational force is converted into a large linear force, which can effectively flatten the round pin.

[0023] Formula for calculating the thrust of thread drive assembly 4:

[0024] F=T×2π×η / P

[0025] in:

[0026] F is the thrust generated by the thread drive assembly 4 (unit: Newton, N);

[0027] T is the torque applied to the threaded rod 5 (unit: Newton-meter, Nm);

[0028] η is the mechanical efficiency (representing energy loss);

[0029] P is the thread pitch (unit: meter, m);

[0030] 2π is a constant representing the circumference of one revolution.

[0031] Working principle

[0032] When flattening a round pin, place the round pin between the first clamping plate 2 and the second clamping plate 3. Then, screw in the threaded rod 5 using an electric wrench or manually. The threaded rod 5 moves towards the push rod 42. Under the push of the threaded rod 5, the push rod 42 drives the second clamping plate 3 to move towards the first clamping plate 2. Under the pressure of the first clamping plate 2 and the second clamping plate 3, the round pin is forced to become flat and round. After flattening, unscrew the threaded rod 5. Under the elastic force of the spring, the push rod 42 returns to its original position, the second clamping plate 3 moves away from the first clamping plate 2, and the flattened round pin is removed.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A portable flat hole round pin flattening device, characterized by, include: The flattening device body has a first clamping plate fixedly installed on one side of its lower part; The second clamping plate is movably disposed at the lower part of the flattening device body and corresponds to the first clamping plate; A threaded drive assembly is disposed at the lower part of the flattener body, and the output end of the threaded drive assembly is fixedly connected to the second clamping plate.

2. A portable flat hole round pin holder according to claim 1, characterized in that: The threaded drive assembly includes a threaded cylinder and a piston cylinder. The piston cylinder is fixedly installed at the lower part of the flattener body. A movable push rod is provided inside the piston cylinder. One end of the push rod is connected to the second clamping plate by a bolt.

3. A portable flat hole round pin holder according to claim 2, characterized in that: The threaded cylinder is located on the side of the piston cylinder away from the second clamping plate. The threaded cylinder has a threaded rod inside, one end of which is in contact with the push rod, and the other end is provided with a groove.

4. A portable flat hole round pin clamp according to claim 3, characterized in that: A limiting cylinder is fixed inside the piston cylinder, and a push rod passes through the limiting cylinder. An annular protrusion is provided at the end of the push rod away from the limiting cylinder, and a return spring is provided between the limiting cylinder and the annular protrusion.

5. A portable flat hole round pin holder according to claim 4, characterized in that: The reset spring is arranged around the outside of the top rod.

6. A portable flat hole round pin holder according to claim 3, characterized in that: The groove is a square groove.

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