Device for quickly dismounting cylindrical pin

Abstract

The utility model belongs to the field of machinery, and relates to a device for quickly dismantling a cylindrical pin. The device comprises a screw rod, a screw sleeve and a dismantling screw, the screw rod is in threaded connection with the screw sleeve; a groove is inwards formed in the side wall of the lower end of the screw rod; an open U-shaped groove is formed in the side surface of the bottom of the groove; and the hexagonal head of the dismantling screw is clamped on the U-shaped groove, and the screw rod downwards extends out of the U-shaped groove and is in threaded connection with the threaded hole in the cylindrical pin.

Description

Technical Field

[0001] The utility model belongs to the field of machinery and relates to a device for quickly removing a cylindrical pin. Background Technique

[0002] In a mechanical structure, the connection and fixation between parts usually adopt the method of fixing with a cylindrical pin. When removing a part, it is necessary to first remove the cylindrical pin. However, the cylindrical pin itself has no force-bearing point, and tools need to be used to achieve the removal. Content of the Utility Model

[0003] Purpose of the utility model: To quickly remove a cylindrical pin, a device for quickly removing a cylindrical pin is provided.

[0004] Technical Solution

[0005] A device for quickly removing a cylindrical pin is provided, including: a screw rod, a screw sleeve, and a removal screw;

[0006] The screw rod and the screw sleeve are in threaded connection; a groove is opened inward on the side wall at the lower end of the screw rod, and an open U-shaped groove is opened on the side surface at the bottom of the groove; the hexagonal head of the removal screw is stuck on the U-shaped groove, and the screw rod extends downward from the U-shaped groove and is screwed into the threaded hole in the cylindrical pin.

[0007] Further, for different specifications of the cylindrical pin, replace the removal screw with the corresponding specification.

[0008] Further, the screw sleeve is installed on a fixed surface to facilitate the user to apply force.

[0009] Further, the screw rod, the screw sleeve, and the removal screw are all made of 45# steel.

[0010] Further, an external hexagonal nut is provided at the top of the screw rod and is used in cooperation with a torque wrench.

[0011] Further, the pitch of the screw rod is selected according to the embedding depth of the cylindrical pin in the part.

[0012] Beneficial Effects:

[0013] This structure can effectively remove the cylindrical pin, and for cylindrical pins with different diameters, different-sized removal screws can be quickly replaced to achieve the effect of quick removal. Description of the Drawings

[0014] Figure 1 It is a schematic structural diagram of a device for quickly removing a cylindrical pin.

[0015] Figure 2 It is a cross-sectional schematic diagram of the device. Detailed Description of the Embodiment

[0016] The present utility model provides a device for quickly removing a cylindrical pin, as Figure 1-2 shown, which includes: a screw rod 1, a screw sleeve 2, and a removal screw 3;

[0017] The screw rod 1 and the screw sleeve 2 are in threaded connection; a groove is formed inwardly on the side wall at the lower end of the screw rod 1, and an open U-shaped groove is formed on the side surface at the bottom of the groove; the hexagonal head of the removal screw 3 is stuck in the U-shaped groove, and the screw rod extends downward from the U-shaped groove and is screwed into the threaded hole in the cylindrical pin.

[0018] Since the specifications of the cylindrical pins are different, the corresponding specifications of the removal screws 3 are replaced as shown in Table 1.

[0019] Table 1

[0020] Serial number Cylindrical pin diameter (GB / / T120) 3 Demolition screw specifications 1 6 M4 2 8 M5 3 10 M6 4 12 M6 5 16 M8 6 20 M10

[0021] The screw sleeve 2 is installed on a fixed surface to facilitate the user to apply force.

[0022] The screw rod 1, the screw sleeve 2, and the removal screw 3 are all made of 45# steel.

[0023] An external hexagonal nut is provided at the top of the screw rod 1 and is used in cooperation with a torque wrench.

[0024] The pitch of the screw rod 1 is selected according to the embedding depth of the cylindrical pin in the part as shown in Table 2.

[0025] Table 2

[0026] Serial number Cylindrical pin depth (GB / T120) 1 Screw rod specifications 1 5mm to 15mm M10 2 <![CDATA[16mm to 25 mm > M16 3 26mm to 35mm M20 4 36mm to 45mm M24

[0027] The working principle of this device is as follows:

[0028] First, select a removal screw 3 that matches the internal thread of the cylindrical pin, screw the removal screw 3 and the cylindrical pin tightly, the hexagonal head of the removal screw 3 is stuck in the U-shaped groove opened on the screw rod 1, and by means of the threaded cooperation between the screw rod 1 and the screw sleeve 2, an upward force is applied to the removal screw 3, thereby pulling out the cylindrical pin. In case of cylindrical pins with different specifications, only the removal screw 3 needs to be replaced to achieve the removal of different cylindrical pins.

Claims

1. A device for quickly removing a cylindrical pin, characterized in that, Including: A screw rod (1), a screw sleeve (2), and a removal screw (3); The screw rod (1) is in threaded connection with the screw sleeve (2); a groove is formed inwards on the side wall at the lower end of the screw rod (1), and an open U-shaped groove is formed on the side surface of the bottom of the groove; the hexagonal head of the removal screw (3) is stuck on the U-shaped groove, and the screw rod extends downward from the U-shaped groove and is in threaded connection with the threaded hole in the cylindrical pin.

2. The device according to claim 1, characterized in that, The specifications of the cylindrical pins are different, and the corresponding specifications of the removal screws (3) are replaced.

3. The device according to claim 1, characterized in that, The screw sleeve (2) is installed on the fixed surface to facilitate the user to apply force.

4. The device according to claim 1, characterized in that The screw rod (1), the screw sleeve (2), and the removal screw (3) are all made of 45# steel.

5. The device according to claim 1, characterized in that, An external hexagonal nut is arranged at the top of the screw rod (1) and is used in cooperation with a torque wrench.

6. The device according to claim 1, characterized in that The pitch of the screw rod (1) is selected according to the embedding depth of the cylindrical pin into the part.

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