Four-tooth structure guide sleeve torsion detection clamp

Abstract

The utility model discloses a torsion detection clamp for a guide sleeve with a four-tooth structure, which is characterized by comprising a base (1), a positioning hole (2) arranged in the center of the base (1), a guide sleeve (3) and a mold core (4) arranged in the positioning hole (2), a pressing plate (5) arranged above the base (1), and an inner hole (6) arranged in the middle of the pressing plate (5) and matched with the shape of the upper part of the guide sleeve (3). The structure can be used for the guide sleeve of the four-tooth structure, clamping can be achieved only by adopting the base and the pressing plate to be matched with the mold core, the structure is simpler, use is more convenient, clamping of the guide sleeve of the four-tooth structure is more stable and reliable, and torsion detection is facilitated. The torsion detection of the whole pipe can be effectively simulated, so that the detection is more accurate, and the detection process is stable and reliable.

Description

Technical Field

[0001] The utility model relates to a four-tooth structure guide sleeve torque detection fixture, belonging to the technical field of guide sleeve detection for vacuum arc extinguishing chambers. Background Art

[0002] The vacuum interrupter is the core part of the vacuum circuit breaker, which largely determines the technical indicators and various performances of the vacuum circuit breaker. Its basic components include moving contacts, static contacts, insulating shells, shielding covers and bellows. A guide sleeve is usually installed on the moving end cover of the vacuum interrupter, and a moving conductive rod that pushes the moving contact is movably inserted in the guide sleeve. The function of the guide sleeve is to ensure that the moving conductive rod of the vacuum circuit breaker moves linearly along the axis of the interrupter during the opening and closing process. At the same time, it also prevents the torque generated during the user's installation process from causing the guide rod to rotate, thereby avoiding the distortion and leakage of the bellows, which leads to the failure of the vacuum interrupter. That is, it mainly plays a guiding and anti-twist role. Whether the design and installation of the guide sleeve are appropriate directly affects the service life and opening and closing speed of the vacuum circuit breaker.

[0003] Chinese patent 201920463696.X discloses a torque detection fixture for a guide sleeve of a vacuum arc chamber. It includes a base fixing plate, a base is fixed on the base fixing plate, a reference hole is provided in the center of the base, a fastening threaded hole and a guide column fastening limit hole are respectively provided on the base outside the reference hole, the reference hole is movably connected to the core, the fastening threaded hole is connected to the positioning plate through a fastening screw, a regular polygonal limit hole is provided in the center of the positioning plate, a guide hole is also provided on the positioning plate outside the regular polygonal limit hole, the guide hole is slidably connected to the guide column, and the guide column is connected to the guide column fastening limit hole; the core includes a core body, a limit boss is provided at one end of the core body, a connecting threaded hole is provided at the other end of the core body, and a torque through groove is provided on the side of the core body; the reference hole is coaxial with the regular polygonal limit hole. The fixture can be used for torque detection of the guide sleeve of the vacuum arc chamber, but it is found that the structure is slightly complicated and not easy to use. In addition, different vacuum arc chambers use different guide sleeves, so it is necessary to develop a matching detection fixture. Summary of the invention

[0004] In order to solve the above technical problems, the utility model provides a four-tooth structure guide sleeve torque detection fixture, which has a simpler structure, is easy to use, and has a stable and reliable detection process.

[0005] The utility model provides a four-tooth structure guide sleeve torque detection fixture, comprising a base, a positioning hole is provided at the center of the base, a guide sleeve and a core are arranged in the positioning hole, a pressing plate is provided above the base, and an inner hole matching the outer shape of the upper part of the guide sleeve is provided in the middle of the pressing plate.

[0006] A clamping portion is provided below the base.

[0007] The base and the pressing plate are both provided with pin holes and screw holes, which are connected by pins and screws respectively.

[0008] A torsion boss is arranged inside the guide sleeve, and a torsion groove is arranged outside the core.

[0009] The upper part of the guide sleeve is provided with 4 teeth, and the inner hole in the middle of the pressing plate is provided with a through groove matching with the teeth.

[0010] Due to the adoption of the above technical solution, the utility model has the advantages that the structure can be used for the guide sleeve of the four-tooth structure, and only the base and the pressure plate are used, and the clamping can be realized with the core, the structure is simpler, and the use is more convenient. The clamping of the guide sleeve of the four-tooth structure is more stable and reliable, and it is convenient for torque detection. It can effectively simulate the torque detection of the whole pipe, making the detection more accurate and the detection process stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is the structural diagram of the utility model;

[0012] Figure 2 This is a schematic diagram of the utility model in use. DETAILED DESCRIPTION

[0013] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. Example

[0014] like Figure 1-2 As shown, a four-tooth structure guide sleeve torque detection fixture includes a base 1, a positioning hole 2 is provided in the center of the base 1, a guide sleeve 3 and a core 4 are provided in the positioning hole 2, a pressure plate 5 is provided above the base 1, and an inner hole 6 matching the upper shape of the guide sleeve 3 is provided in the middle of the pressure plate 5.

[0015] A clamping portion 7 is provided below the base 1 .

[0016] The base 1 and the pressing plate 5 are both provided with a pin hole 8 and a screw hole 9, which are connected by a pin 14 and a screw 15 respectively.

[0017] The guide sleeve 3 is provided with a torsion boss 10 inside, and the core 4 is provided with a torsion groove 11 outside.

[0018] The guide sleeve 3 is provided with four teeth 12 on its upper portion, and the inner hole 6 in the middle of the pressing plate 5 is provided with a through groove 13 matching with the teeth 12 .

[0019] The use process is as follows: the outer circle of the bottom of the guide sleeve 3 with the four-tooth structure is assembled and positioned with the positioning hole 2 of the base 1 to prevent the guide sleeve 3 from deflecting, and the inner hole 6 of the pressure plate 5 is assembled with the four teeth 12 of the guide sleeve 3. The pin 14 passes through the pin hole 8 of the pressure plate 5 and the pin hole 8 on the base 1 to connect and fix the pressure plate 5, and then the screw 15 is assembled in the screw hole 9 to fix the pressure plate 5 firmly, and finally the core 4 is assembled in the inner hole of the guide sleeve 3, and the assembled whole set of fixtures is clamped with the clamping part 7 under the base 1 with a vise using a screw and a torque wrench of corresponding specifications, so that the four-tooth structure guide sleeve can be clamped for torque detection. Example

[0020] A four-tooth structure guide sleeve torque detection fixture comprises a base 1, a positioning hole 2 is provided at the center of the base 1, a guide sleeve 3 and a core 4 are provided in the positioning hole 2, a pressing plate 5 is provided above the base 1, and an inner hole 6 matching the upper shape of the guide sleeve 3 is provided in the middle of the pressing plate 5.

[0021] A clamping portion 7 is provided below the base 1 .

[0022] The base 1 and the pressing plate 5 are both provided with a pin hole 8 and a screw hole 9, which are connected by a pin 14 and a screw 15 respectively, or they can all be connected by screw holes and screws.

[0023] The guide sleeve 3 is provided with a torsion boss 10 inside, and the core 4 is provided with a torsion groove 11 outside.

[0024] The upper part of the guide sleeve 3 is provided with four teeth 12, and the inner hole 6 in the middle of the pressing plate 5 is provided with a through groove 13 matching the teeth 12. The guide sleeve 3 of other structures can also be matched.

[0025] The use process is the same as in Example 1.

Claims

1. A four-tooth structure guide sleeve torque detection fixture, characterized in that: The base (1) comprises a positioning hole (2) at the center of the base (1), a guide sleeve (3) and a core (4) are arranged in the positioning hole (2), a pressing plate (5) is arranged above the base (1), and an inner hole (6) matching the outer shape of the upper part of the guide sleeve (3) is arranged in the middle of the pressing plate (5).

2. The four-tooth structure guide sleeve torque detection fixture according to claim 1 is characterized in that: A clamping portion (7) is provided below the base (1).

3. The four-tooth structure guide sleeve torque detection fixture according to claim 1 is characterized in that: The base (1) and the pressure plate (5) are both provided with a pin hole (8) and a screw hole (9), and are connected by a pin (14) and a screw (15) respectively.

4. The four-tooth structure guide sleeve torque detection fixture according to claim 3 is characterized in that: The guide sleeve (3) is provided with a torsion boss (10) inside, and the core (4) is provided with a torsion groove (11) outside.

5. The four-tooth structure guide sleeve torque detection fixture according to claim 1, characterized in that: The guide sleeve (3) is provided with four teeth (12) on its upper portion, and the inner hole (6) in the middle of the pressure plate (5) is provided with a through groove (13) matching the teeth (12).

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