General tool for SF6 valve body

Abstract

The invention relates to the technical field of electrical equipment maintenance, and discloses an SF6 valve body universal tool which comprises a fixed clamping jaw and a movable clamping jaw, a mandrel is arranged at the bottom of the fixed clamping jaw and the bottom of the movable clamping jaw in a penetrating mode, external threads are arranged on the mandrel, a driving sleeve rotationally connected with the movable clamping jaw is arranged on the side, located outside the movable clamping jaw, of the mandrel in a sleeving mode, and the driving sleeve is connected with the movable clamping jaw in a sleeving mode. A ratchet is elastically arranged in the driving sleeve, the ratchet is meshed with a ratchet wheel which is coaxially and movably arranged in the driving sleeve, two split type threaded connecting sleeves are arranged on the side, away from the movable clamping jaw, of the ratchet wheel, and limiting rings are movably arranged outside the threaded connecting sleeves; the device is convenient to operate and use, the stability of the positions of the fixed clamping jaw and the movable clamping jaw after adjustment can be guaranteed, and the operation safety is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical equipment maintenance, and in particular to a universal tooling for SF6 valve bodies. Background Art

[0002] Due to the high internal pressure of the SF6 equipment, the detection port is equipped with a check valve connected with a compression flange. The valve has different installation forms and sizes in the equipment. It is extremely difficult for the staff to install the gas collecting valve during the test. It requires 2-3 people to work together. If you are not careful, it will pop out, causing harm to the staff and causing the interface to be broken and scrapped. In addition, this operation method has high labor intensity and low work efficiency, which seriously threatens the safety of people and equipment. In addition, it will prolong the power outage maintenance time, which to a certain extent affects the safe and stable operation of the substation.

[0003] Based on this, the utility model patent with the authorization announcement number CN209380674U discloses a universal tooling for a guide sleeve type double cam SF6 valve body, which includes a core shaft, a fixed clamping claw, a movable clamping claw, a double cam, a spring, and a guide sleeve. The fixed clamping claw and the movable clamping claw of the utility model are also equipped with an adjustment component. The utility model has a simple structure and is easy to operate; it is convenient and easy to load and unload the gas collecting valve, reduce labor intensity, avoid personal injury caused by the popping out of the gas collecting valve, and can reduce the number of on-site staff, improve work efficiency, and shorten operation time; it has a simple structure, few parts, low relative matching accuracy, and is easy to process; the adjustment component of the new model makes the new model more flexible in use, and is suitable for check valves and gas collecting valves of different sizes and models.

[0004] Although the above solution solves the corresponding problem to a certain extent, when the distance between the fixed claw and the moving claw is adjusted by the rotation of the double cam, it is difficult to ensure the relative stability of the position of the moving claw and the fixed claw by relying only on the friction between the double cam and the moving claw. At this time, the spring has a restoring force to reset, which makes it even more difficult to ensure the stability of the entire tooling state, and there are still safety hazards. Therefore, there is an urgent need for a universal tooling for SF6 valve bodies that can quickly adjust the distance between the fixed claw and the moving claw and ensure the stability of their state. Summary of the invention

[0005] The purpose of the present invention is to provide a universal tooling for an SF6 valve body, which is easy to operate and use, can ensure the stability of the positions of the fixed jaws and the movable jaws after adjustment, and improve the safety of operation.

[0006] The present invention adopts the following technical solutions: A universal tooling for an SF6 valve body comprises a fixed jaw and a movable jaw, wherein a core shaft is provided at the bottom of the fixed jaw and the movable jaw, an external thread is provided on the core shaft, and a driving sleeve rotatably connected to the movable jaw is sleeved on one side thereof located outside the movable jaw, a ratchet is elastically provided inside the driving sleeve, and the ratchet is meshed with a ratchet wheel which is coaxial and movably provided inside the driving sleeve, and two split threaded connection sleeves are provided on the side of the ratchet wheel away from the movable jaw, and a limiting ring is movably provided on the outside of the threaded connection sleeve; in an initial state, the limiting ring is located on a side close to the driving sleeve, and at this time, the two threaded connection sleeves are separated and do not contact the core shaft; when working, the limiting ring is slid to the outside of the threaded connection sleeve, and at this time, the two threaded connection sleeves are in close contact to form a sleeve structure which is threadedly connected to the core shaft.

[0007] Preferably, an operating portion is provided on the driving sleeve.

[0008] Preferably, the operating portion is adjustable in length.

[0009] Preferably, the operating part includes an external accommodating sleeve, an adjusting rod is slidably arranged inside the accommodating sleeve, a positioning tooth is arranged on the adjusting rod along the vertical direction, a positioning plate is elastically arranged on one side of the top of the accommodating sleeve, the positioning plate passes through the accommodating sleeve and a tooth meshing with the positioning tooth is arranged at its end.

[0010] Preferably, a guide rod is provided on the outside of the driving sleeve, a guide hole for the guide rod to movably pass through is opened on the limiting ring, a pulling spring is provided on the outer sleeve of the guide rod, and the two ends of the pulling spring are respectively fixedly connected to the limiting ring and the driving sleeve; at least one end of the guide rod is elastically provided with a positioning block, and the limiting ring is provided with a positioning hole connected to the guide hole.

[0011] Preferably, anti-wear balls are movably arranged on the positioning block.

[0012] Preferably, a limit plate is provided at the end of the guide rod.

[0013] Preferably, a guide sleeve is provided inside the movable clamping jaw, a guide groove is provided on the core shaft, and a guide block is provided inside the guide sleeve and is in sliding contact with the guide groove.

[0014] Preferably, guide balls are movably arranged on the guide sleeve.

[0015] Preferably, an outwardly diverging oblique groove is provided on the outer side wall of the threaded connection sleeve from one end close to the driving sleeve to one end away from the driving sleeve, and an adjustment block slidably connected to the oblique groove is provided in the limiting ring.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: by arranging an external thread on the outer side of the core shaft, the present invention can utilize the threaded connection between the two threaded connecting sleeves and the core shaft to realize the movement and adjustment of the movable jaw during operation, thereby effectively ensuring the stability of the adjusted position of the movable jaw and the fixed jaw and improving the safety during the working process; in addition, the arrangement of the ratchet and ratchet teeth in the driving sleeve facilitates the adjustment of the threaded connecting sleeve, improves the convenience of operation, and reduces the adverse effects on the adjustment operation of the threaded connecting sleeve caused by the limitation of the operating space.

[0017] The threaded connection sleeve is arranged as a split type and its external limit ring is arranged, which helps to release the limit on the threaded connection sleeve by sliding the limit ring during disassembly, so that the two threaded connection sleeves are separated from each other and out of contact with the core shaft, making it convenient for the movable claw to move quickly and reset along the axial direction of the core shaft, thereby improving the convenience of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front view of an embodiment of the present application; Figure 2 It is a right side view of the embodiment of the present application; Figure 3 for Figure 2 A magnified view of middle; Figure 4 It is a cross-sectional view of the driving sleeve of the embodiment of the present application; Figure 5 A cross-sectional view of a guide sleeve according to an embodiment of the present application; Figure 6 It is a cross-sectional view of a threaded connection sleeve according to an embodiment of the present application; Figure 7 for Figure 1 Enlarged view of B. DETAILED DESCRIPTION

[0019] The present invention will be described clearly and completely below with reference to the accompanying drawings and embodiments: like Figures 1 to 7 As shown, a universal tooling for SF6 valve body described in the present invention comprises a fixed clamping claw 1 and a movable clamping claw 2, the top of each of the fixed clamping claw 1 and the movable clamping claw 2 is provided with a clamping groove 3, the bottom of the fixed clamping claw 1 and the movable clamping claw 2 is provided with a through hole, a core shaft 4 is passed through the through hole, an external thread is provided on the core shaft 4, and a driving sleeve 5 rotatably connected to the movable clamping claw 2 is sleeved on one side of the core shaft 4 located outside the movable clamping claw 2, a ratchet 6 is elastically provided inside the driving sleeve 5, and the ratchet 6 is meshed with a ratchet 7 coaxially and movably provided inside the driving sleeve 5; wherein the ratchet 7 is sleeved on the outside of the core shaft 4, and two split threaded connection sleeves 8 are provided on the side of the ratchet 7 away from the movable clamping claw 2, and a limiting ring 9 is movably provided on the outside of the threaded connection sleeve 8; an outwardly divergent oblique groove 10 is provided on the outer wall of the threaded connection sleeve 8 from one end close to the driving sleeve 5 to the end away from the driving sleeve 5, and the oblique supports on the two threaded connection sleeves 8 are preferably symmetrically arranged, such as Figure 6 As shown, an adjusting block 11 slidably connected to an inclined groove 10 is provided in the limit ring 9; in the initial state, the limit ring 9 is located on the side close to the driving sleeve 5. At this time, the two threaded connection sleeves 8 are separated and do not contact the core shaft 4. During operation, the limit ring 9 is slid to the outside of the threaded connection sleeve 8. At this time, the two threaded connection sleeves 8 are in close contact to form a sleeve structure that is threadedly connected to the core shaft 4. The driving sleeve 5 is rotated clockwise, and the threaded connection sleeve 8 is driven to rotate as the ratchet 6 and the ratchet wheel 7 are engaged. As the threaded connection sleeve 8 is displaced on the core shaft 4, the movable claw 2 can be pushed, thereby completing the clamping and fixing of the tooling on both sides of the valve body.

[0020] Furthermore, an operating part is provided on the driving sleeve 5, and the setting of the operating part facilitates the rotation adjustment of the driving sleeve 5 without the need for additional auxiliary tools, thereby improving the convenience of operation; preferably, the length of the operating part is adjustable, and when there is sufficient space, the length of the operating part can be extended to increase the torque, thereby improving the convenience of adjusting the driving sleeve 5; specifically, the operating part includes an external accommodating sleeve 12, and an adjusting rod 13 is slidably provided inside the accommodating sleeve 12, and a positioning tooth 14 is provided on the adjusting rod 13 in the vertical direction, and a positioning plate 15 is elastically provided on one side of the top of the accommodating sleeve 12, and the positioning plate 15 passes through the accommodating sleeve 12 and has teeth at its end that mesh with the positioning teeth 14; when it is necessary to adjust the length of the operating part, the positioning plate 15 is pulled outward to disengage the teeth from the contact with the positioning teeth 14, and the adjusting rod 13 can be pulled outward, and after adjustment into place, the positioning plate 15 is released to reset it using the elastic restoring force, and at this time, the teeth are meshed with the positioning teeth 14 again to complete the positioning of the adjusting rod 13.

[0021] Furthermore, a guide rod 16 is provided on the outside of the driving sleeve 5, a guide hole 17 is provided on the limiting ring 9 for the guide rod 16 to be movably inserted, and a pulling spring 18 is provided on the outside of the guide rod 16, and the two ends of the pulling spring 18 are respectively fixedly connected to the limiting ring 9 and the driving sleeve 5; at least one end of the guide rod 16 is elastically provided with a positioning block, and the limiting ring 9 is provided with a positioning hole 19 that is connected to the guide hole 17. Pull the limiting ring 9 to move toward the positioning block until the positioning block enters the positioning hole 19, at which time the limiting ring 9 moves into place, and the two separate threaded connection sleeves 8 are squeezed and closely contacted; the pulling spring 18 is in a stretched state, and the setting of the pulling spring 18 helps to quickly reset the limiting ring 9 after use, thereby improving the convenience of operation. In addition, in this embodiment, an anti-wear ball 20 is movably provided on the positioning block to reduce the friction between the positioning block and the inner wall of the guide hole 17 after the positioning block enters the guide hole 17. A limit plate 21 is also provided at the end of the guide rod 16 to prevent the limit ring 9 from being pulled too quickly and the positioning block from not popping out of the positioning hole 19 in time, causing the limit ring 9 to fall off the guide rod 16; only one limit plate 21 is provided.

[0022] Furthermore, a guide sleeve 22 is provided on the inner side of the movable jaw 2, a guide groove 23 is provided on the core shaft 4, and a guide block 24 is provided in the guide sleeve 22 and is in sliding contact with the guide groove 23 to ensure the stability of the movement of the movable jaw 2; in addition, a guide ball 25 is preferably provided on the guide sleeve 22 to reduce the friction between the guide block 24 and the guide groove 23; in this embodiment, a reset spring 26 is preferably provided outside the core shaft 4 between the guide sleeve 22 and the fixed jaw 1. When the movable jaw 2 is moved and adjusted in the direction of the fixed jaw 1, the reset spring 26 is in a compressed state. The setting of the reset spring 26 helps to quickly reset the movable jaw 2 subsequently.

[0023] When the present invention is in use, the movable clamping jaw 2 and the clamping groove 3 of the fixed clamping jaw 1 are clamped on both sides of the two flanges on the valve body, and then the limit ring 9 is adjusted to make the two threaded connection sleeves 8 in close contact to achieve the threaded connection with the core shaft 4; finally, the operating part is rotated to achieve the displacement of the threaded connection sleeve 8 on the core shaft 4, thereby achieving the adjustment of the movable clamping jaw 2. The operation is simple and quick, and the stability of the position of the movable clamping jaw 2 is effectively guaranteed. It has high safety, is easy to disassemble later, and has strong practicality.

Claims

1. A universal tooling for SF6 valve body, comprising a fixed clamping claw and a movable clamping claw, wherein a core shaft is penetrated at the bottom of the fixed clamping claw and the movable clamping claw, and characterized in that: The core shaft is provided with an external thread, and a driving sleeve rotatably connected to the moving claw is sleeved on one side thereof located outside the moving claw, a ratchet is elastically provided inside the driving sleeve, the ratchet is meshed with a ratchet wheel that is coaxial and movably arranged inside the driving sleeve, two split threaded connection sleeves are provided on the side of the ratchet wheel away from the moving claw, a limiting ring is movably arranged outside the threaded connection sleeve; in an initial state, the limiting ring is located on a side close to the driving sleeve, at which time the two threaded connection sleeves are separated and do not contact the core shaft, and when working, the limiting ring is slid to the outside of the threaded connection sleeve, at which time the two threaded connection sleeves are in close contact to form a sleeve structure that is threadedly connected to the core shaft.

2. The SF6 valve body universal tooling according to claim 1 is characterized in that: The driving sleeve is provided with an operating part.

3. The SF6 valve body universal tooling according to claim 2 is characterized in that: The operating portion is adjustable in length.

4. The SF6 valve body universal tooling according to claim 3 is characterized in that: The operating part includes an external accommodating sleeve, an adjusting rod is slidably arranged inside the accommodating sleeve, a positioning tooth is arranged on the adjusting rod in the vertical direction, a positioning plate is elastically arranged on one side of the top of the accommodating sleeve, the positioning plate passes through the accommodating sleeve and a tooth meshing with the positioning tooth is arranged at its end.

5. The SF6 valve body universal tooling according to claim 1 is characterized in that: A guide rod is arranged on the outside of the driving sleeve, a guide hole is opened on the limiting ring for the guide rod to movably pass through, a pulling spring is arranged on the outer sleeve of the guide rod, and the two ends of the pulling spring are respectively fixedly connected to the limiting ring and the driving sleeve; at least one end of the guide rod is elastically provided with a positioning block, and the limiting ring is provided with a positioning hole connected to the guide hole.

6. The SF6 valve body universal tooling according to claim 5 is characterized in that: The positioning block is movably provided with anti-wear balls.

7. The SF6 valve body universal tooling according to claim 5 is characterized in that: A limiting plate is arranged at the end of the guide rod.

8. The SF6 valve body universal tooling according to claim 1 is characterized in that: A guide sleeve is arranged inside the movable clamping claw, a guide groove is arranged on the core shaft, and a guide block which is in sliding contact with the guide groove is arranged inside the guide sleeve.

9. The SF6 valve body universal tooling according to claim 8 is characterized in that: The guide sleeve is movably provided with a guide ball.

10. The SF6 valve body universal tooling according to claim 1 is characterized in that: An outwardly diverging oblique groove is arranged on the outer side wall of the threaded connection sleeve from one end close to the driving sleeve to one end far away from the driving sleeve, and an adjusting block slidably connected to the oblique groove is arranged in the limiting ring.

Images