Automatic crimping tool for GIS

Abstract

The utility model relates to an automatic crimping tool for a GIS. According to the automatic crimping tool for the GIS, the longitudinal moving sliding table arranged on the base is used for receiving an off-line disconnecting switch and a telescopic joint, the positioning device and the clamping device are used for enabling the disconnecting switch and the telescopic joint to be concentric, the pushing device is arranged to complete crimping of the telescopic joint and the disconnecting switch, and the automatic crimping tool for the GIS is simple in structure and convenient to use. The problems that in the installation link of the GIS assembling and manufacturing industry, centering and crimping of the disconnecting switch shell and the telescopic joint are difficult, and the labor efficiency is low are solved.

Description

Technical Field

[0001] The utility model relates to a machine for simply assembling or disassembling metal parts or products or metal parts and non-metal parts, in particular to an automatic crimping tool for GIS. Background Art

[0002] With the continuous development of the economy and society, GIS (gas-insulated metal-enclosed switchgear) has been increasingly used due to its advantages such as small footprint, long maintenance cycle, and high safety and reliability, especially in the high-voltage field. Under high-voltage operating conditions, GIS generates severe heat. After the circuit is disconnected, the GIS rapidly cools down. Under conditions of large and frequent temperature fluctuations, the GIS shell experiences significant thermal expansion and contraction. To ensure good sealing and stable operation of the GIS, an expansion joint is installed at one end of the GIS shell to compensate for temperature-induced deformation.

[0003] Typically, the end of the GIS shell that mates with the expansion joint is cylindrical, with a flange on the end face. The GIS expansion joint includes a cylinder whose diameter is slightly smaller than that of the shell, so that one end of the cylinder can be coaxially inserted into the shell. Two sealing rings are embedded on the outer circumference of the cylinder with a certain distance to guide the sealing sliding insertion in the inner cavity of the shell. The other end of the cylinder is turned outward to form a flange for connection to the shell, which is connected to the shell by studs.

[0004] In the high-voltage electrical assembly industry, expansion joints are assembled manually. Workers carry the disconnector and expansion joint off the assembly line to their corresponding fixtures. After adjusting and confirming their alignment, they push the two together using rails. While this method ensures good product yield, it is labor-intensive and time-consuming, resulting in low production efficiency and high labor intensity. The crimping of expansion joints also places high demands on the flatness, verticality, and machining accuracy of the entire tooling. While ensuring that the various slides can be easily moved to the designated position, the centering accuracy of the expansion joint and the housing during crimping is extremely important and is the key to whether the entire process equipment can achieve crimping success. Utility Model Content

[0005] The utility model aims to provide an automatic crimping tool for GIS, so as to solve the problems of difficulty in centering and crimping the isolating switch housing and the expansion joint and low efficiency of manual crimping in the installation link of the GIS assembly manufacturing industry.

[0006] In order to solve the above problems, the automatic crimping tool for GIS of the present invention adopts the following technical solutions:

[0007] An automatic crimping tool for GIS, including a base, on which a longitudinal movable slide is provided, the longitudinal movable slide having a switch receiving position for receiving an offline disconnector and a telescopic joint receiving position for receiving an offline telescopic joint, an disconnector positioning platform and a telescopic joint positioning platform are respectively provided at the lateral ends of the longitudinal movable slide, at least one of the disconnector positioning platform and the telescopic joint positioning platform is a lateral movable slide that can be moved toward the other to connect the disconnector and the telescopic joint, a telescopic joint chuck is provided on the side of the telescopic joint positioning platform facing the disconnector positioning platform, the telescopic joint chuck has a claw for clamping the telescopic joint, and the telescopic joint chuck is also provided with a pushing device for driving the telescopic joint chuck to move so that the telescopic joint and the disconnector are crimped.

[0008] Furthermore, the isolating switch positioning platform includes a lifting platform, and a vertical positioning frame is provided on the side of the lifting platform facing away from the telescopic joint positioning platform. The vertical positioning frame is provided with positioning holes for positioning the corresponding ends of the isolating switch, and the positioning holes are configured with positioning pins corresponding to the holes at the corresponding ends of the isolating switch.

[0009] Furthermore, the vertical positioning frame includes a vertical positioning plate and a reinforcing support plate provided on a side of the vertical positioning plate away from the lifting platform.

[0010] Furthermore, the telescopic section chuck is mounted on a chuck slide, and the chuck slide can slide laterally relative to the telescopic section positioning platform, and a buffer spring is provided between the telescopic section chuck and the chuck slide.

[0011] Furthermore, a plurality of buffer springs are provided, and are arranged corresponding to the end edges of the telescopic joint.

[0012] Furthermore, a screw-nut driving mechanism is provided between the transverse moving slide and the longitudinal moving slide, and the transverse moving slide can reciprocate relative to the transverse moving slide under the action of the screw-nut driving mechanism.

[0013] Furthermore, the pushing device is a pushing cylinder.

[0014] Furthermore, the lifting platform is controlled to rise and fall by a lifting cylinder.

[0015] Furthermore, the longitudinal movable slide is connected to the base via a pulling cylinder, and the longitudinal movable slide can reciprocate relative to the base under the drive of the cylinder.

[0016] Furthermore, a cover is provided on the upper portion of the base to prevent falling objects from entering the interior thereof.

[0017] Beneficial effect: The utility model is a pioneering invention. The automatic crimping tool for GIS of the utility model includes a base, on which a longitudinal movable slide is provided. The longitudinal movable slide has a switch receiving position for receiving the offline disconnector and a telescopic joint receiving position for receiving the offline telescopic joint. By moving the longitudinal movable slide, the receiving of the disconnector and the telescopic joint can be completed with the help of the manipulator of the telescopic joint production line and the disconnector production line. The lateral ends of the longitudinal movable slide are respectively provided with an disconnector positioning platform and a telescopic joint positioning platform. At least one of the disconnector positioning platform and the telescopic joint positioning platform can be moved toward the other to connect the disconnector and the telescopic joint. The slide changes the positions of the two by moving the slide so that the flange surfaces of the expansion joint and the isolating switch are in contact. An expansion joint chuck is provided on the side of the expansion joint positioning platform facing the isolating switch positioning platform. The expansion joint chuck has claws for clamping the expansion joint to clamp and fix the expansion joint. The expansion joint chuck is also provided with a pushing device for driving the expansion joint chuck to move so that the expansion joint and the isolating switch are crimped. The power provided by the pushing device is used to complete the crimping of the expansion joint and the isolating switch, which solves the problems of difficult alignment and crimping of the isolating switch housing and the expansion joint and low labor efficiency in the installation link of the GIS assembly manufacturing industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of an embodiment of the automatic crimping tool for GIS of the present utility model;

[0019] Figure 2 for Figure 1 A schematic structural diagram of a vertical positioning frame of an embodiment;

[0020] Figure 3 for Figure 1 A schematic structural diagram of an isolating switch positioning platform according to an embodiment;

[0021] Figure 4 for Figure 1 A schematic structural diagram of a lifting cylinder for a positioning platform of an isolating switch according to an embodiment;

[0022] Figure 5 for Figure 1 A schematic structural diagram of a telescopic joint positioning platform according to an embodiment;

[0023] Figure 6 for Figure 1 A schematic structural diagram of the lead screw and nut structure of an embodiment.

[0024] In the figure: 1. Base; 2. Longitudinal moving slide; 3. Pulling cylinder; 4. Isolating switch positioning platform; 5. Vertical positioning frame; 6. Telescopic joint positioning platform; 7. Chuck slide; 8. Push cylinder; 9. Motor; 10. Cover; 11. Longitudinal slide rail; 12. Transverse slide rail; 13. Push slide rail; 14. Buffer spring; 15. Telescopic joint; 16. Isolating switch; 17. Screw; 18. Locating pin; 19. Lifting cylinder; 20. Claw; 21. Telescopic joint chuck; 22. Vertical positioning plate; 23. Reinforced support plate. DETAILED DESCRIPTION

[0025] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0026] GIS is widely used due to its small footprint and high safety and reliability. However, the current GIS expansion joint assembly process still relies on manual assembly, making alignment and crimping of the disconnector housing and expansion joint difficult and time-consuming. The technical concept of this utility model is to design a tooling that enables a manipulator to automatically clamp and remove the disconnector housing through the movement of a slide, uses a positioning device for automatic alignment, and adds a power unit for automatic crimping. This solves the problems of difficult alignment and crimping of the disconnector housing and expansion joint, as well as low labor efficiency, during the GIS assembly and manufacturing process.

[0027] like Figure 1 In a basic embodiment, the automatic crimping tool for GIS of the present invention includes a base 1, on which a longitudinal movable slide 2 is provided. The longitudinal movable slide 2 has a switch receiving position for receiving the offline isolating switch 16 and a telescopic joint receiving position for receiving the offline telescopic joint 15 on the base 1, which is used to receive the isolating switch 16 and the telescopic joint 15 back and forth between the two production lines to realize automatic feeding. The lateral ends of the longitudinal movable slide 2 are respectively provided with an isolating switch positioning platform 4 and a telescopic joint positioning platform 6, and the isolating switch positioning platform 4 and the telescopic joint positioning platform 6 are respectively provided. At least one of the positioning platform 4 and the telescopic section positioning platform 6 is a transversely movable slide that can be moved toward the other to dock the isolating switch 16 with the telescopic section 15, and automatic docking of the telescopic section 15 and the isolating switch 16 is achieved in this direction. A telescopic section chuck 21 is provided on the side of the telescopic section positioning platform 6 facing the isolating switch positioning platform 4, and the telescopic section chuck 21 has a claw 20 for clamping the telescopic section. The telescopic section chuck 21 is also provided with a pushing device for driving the telescopic section chuck 21 to move so that the telescopic section 15 and the isolating switch 16 are crimped.

[0028] The longitudinal movable slide 2 moves to a fixed position. The robot places the grabbed disconnector 16 on the disconnector positioning platform 4. The robot then grabs the telescopic joint 15 and places it on the telescopic joint chuck 21. The clamping claw 20 of the telescopic joint chuck 21 tightens the telescopic joint 15 to prevent it from moving and falling. The robot releases the telescopic joint 15 and moves it outside the working range of the tooling. After the disconnector 16 and the telescopic joint 15 are positioned and fixed, their assembly ends are concentric. The power device pushes the slide toward the other positioning platform until the front end of the telescopic joint 15 contacts the housing flange of the disconnector 16. The slide stops moving and the pushing device of the telescopic joint chuck 21 starts working. After the chuck advances a set distance, the telescopic joint 15 and the disconnector 16 are crimped. The clamping claw 20 is released, the chuck returns to its position, the slide returns to its position, and the robot grabs the crimped product and removes it from the tooling. According to calculations, using this tooling for operation can reduce the number of workers from the original two to one, shorten the single-piece operation time from the original one hour to one minute, and greatly reduce the workload of workers.

[0029] like Figure 2 、 3 4. In a preferred embodiment, the isolating switch positioning platform 4 includes a lifting platform. A vertical positioning frame 5 is provided on the side of the lifting platform facing away from the telescopic joint positioning platform 6. The vertical positioning frame 5 is provided with positioning holes for positioning the corresponding ends of the isolating switch 16. The positioning holes are equipped with positioning pins 18 corresponding to the holes at the corresponding ends of the isolating switch. After the isolating switch 16 is placed on the isolating switch positioning platform 4, the positioning pins 18 are inserted to secure it. The vertical positioning frame 5 and the positioning pins 18 jointly complete the positioning of the isolating switch. In other embodiments, a card slot can be used to position the isolating switch. The vertical positioning frame 5 includes a vertical positioning plate 22 and a reinforcing support plate 23 provided on the side of the vertical positioning plate 22 away from the lifting platform. The vertical positioning plate 22 adopts a plate-like structure so as to increase the contact area with the isolating switch 16 and reduce the pressure received by the vertical positioning plate 22 during crimping to prevent the vertical positioning plate 22 from being deformed due to impact. At the same time, a reinforcing support plate 23 is added to support and fix the vertical positioning plate to prevent damage or movement caused by impact during docking that affects the accuracy of crimping. In other embodiments, the vertical positioning plate can also be designed as a frame structure or integrally formed with the longitudinal movable slide.

[0030] like Figure 5 、 6In a preferred embodiment, the telescopic joint chuck 21 is mounted on a chuck slide 7, which can slide horizontally relative to the telescopic joint positioning platform 6. A buffer spring 14 is provided between the telescopic joint chuck 21 and the chuck slide 7. Since the GIS assembly industry belongs to the high-voltage and high-pressure industry, the isolating switch 16 has high requirements for foreign matter and airtightness. The connection between the telescopic joint 15 and the isolating switch 16 installed in the tooling of the utility model adopts a two-layer circular sealing rubber ring structure. This structure leads to high resistance during the crimping process. As the pushing device slowly advances, the friction resistance generated at the contact point with the sealing rubber ring will continuously change. When large friction resistance occurs, the sealing rubber ring may be squeezed and ruptured, resulting in assembly failure. In order to eliminate this unstable friction resistance and prevent the occurrence of unqualified products, a buffer spring 14 is added between the chuck slide 7 and the telescopic joint chuck 21. The buffering properties of the buffer spring 14 are used to offset the negative effects of unstable friction resistance and ensure assembly quality. In other embodiments, the system can also work without the buffer spring, but it is likely to result in a high scrap rate. Multiple buffer springs 14 are provided, positioned corresponding to the end edges of the telescopic joint 15. The uniformly arranged buffer springs 14 provide a uniform buffering force, effectively eliminating the negative effects of unstable frictional resistance and preventing deviation from the original direction during docking, which could result in product failure. In other embodiments, a larger spring positioned in the center could be used, but this would provide less effective buffering.

[0031] In a preferred embodiment, a screw-nut drive mechanism is provided between the transverse movable slide and the longitudinal movable slide 2. The screw-nut drive mechanism allows the transverse movable slide to reciprocate relative to the other positioning platform to achieve docking between the disconnector and the expansion joint. In other embodiments, a similar effect can be achieved using a cylinder or hydraulic device.

[0032] In a preferred embodiment, the pushing device is a pushing cylinder 8, which uses the power of the cylinder to complete the crimping of the telescopic head 15 and the isolating switch 16. The lifting platform is controlled by the lifting cylinder 19. After the isolating switch 16 is placed on the isolating switch positioning platform 4, the lifting cylinder 19 starts to work and pushes the isolating switch 16 upward to keep it in the lifted state. The longitudinal movable slide 2 is connected to the base 1 by a pulling cylinder 3. The longitudinal movable slide 2 can be reciprocated relative to the longitudinal movable slide 2 under the drive of the cylinder to receive the isolating switch 16 and the telescopic joint 15 on the offline line. In other embodiments, a similar effect can be achieved by using a screw nut drive mechanism. A cover body 10 is provided on the upper part of the base 1 to prevent items from falling to the bottom and to facilitate cleaning. In other embodiments, a cover body may not be provided to prevent items from falling and impacting the tooling, thereby affecting the accuracy of the tooling.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be based on the claims. Any equivalent structural changes made using the description and drawings of the present invention shall also be included in the scope of protection of the present invention.

Claims

1. An automatic crimping tool for GIS, characterized in that: The invention comprises a base, on which a longitudinal movable slide is arranged, and the longitudinal movable slide has a switch receiving position for receiving the offline isolating switch and a telescopic joint receiving position for receiving the offline telescopic joint on the base, and an isolating switch positioning platform and a telescopic joint positioning platform are respectively arranged at the lateral ends of the longitudinal movable slide, and at least one of the isolating switch positioning platform and the telescopic joint positioning platform is a lateral movable slide that can be moved toward the other to connect the isolating switch and the telescopic joint, and a telescopic joint chuck is arranged on the side of the telescopic joint positioning platform facing the isolating switch positioning platform, and the telescopic joint chuck has a claw for clamping the telescopic joint, and the telescopic joint chuck is also provided with a pushing device for driving the telescopic joint chuck to move so that the telescopic joint and the isolating switch are crimped.

2. The automatic crimping tool for GIS according to claim 1, characterized in that: The isolating switch positioning platform includes a lifting platform, and a vertical positioning frame is provided on the side of the lifting platform facing away from the telescopic joint positioning platform. The vertical positioning frame is provided with positioning holes for positioning the corresponding ends of the isolating switch, and the positioning holes are configured with positioning pins corresponding to the holes at the corresponding ends of the isolating switch.

3. The automatic crimping tool for GIS according to claim 2, characterized in that: The vertical positioning frame includes a vertical positioning plate and a reinforcing support plate arranged on a side of the vertical positioning plate away from the lifting platform.

4. The automatic crimping tool for GIS according to claim 1, characterized in that: The telescopic section chuck is mounted on a chuck slide, and the chuck slide can slide laterally relative to the telescopic section positioning platform. A buffer spring is provided between the telescopic section chuck and the chuck slide.

5. The automatic crimping tool for GIS according to claim 4, characterized in that: There are multiple buffer springs, and they are arranged corresponding to the end edges of the telescopic joint.

6. The automatic crimping tool for GIS according to claim 1, characterized in that: A screw nut driving mechanism is provided between the transverse moving slide and the longitudinal moving slide, and the transverse moving slide can reciprocate relative to the transverse moving slide under the action of the screw nut driving mechanism.

7. The automatic crimping tool for GIS according to claim 1 or 4, characterized in that: The pushing device is a pushing cylinder.

8. The automatic crimping tool for GIS according to claim 2, characterized in that: The lifting platform is controlled to rise and fall by a lifting cylinder.

9. The automatic crimping tool for GIS according to claim 1, characterized in that: The longitudinal movable slide is connected to the base via a pulling cylinder, and the longitudinal movable slide can reciprocate relative to the longitudinal movable slide under the drive of the cylinder.

10. The automatic crimping tool for GIS according to claim 1 or 9, characterized in that: A cover is provided on the upper portion of the base to prevent falling objects from entering the interior thereof.

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