Plum blossom contact assembling and disassembling device

Abstract

The invention relates to a tulip contact dismounting and mounting device which comprises a main shaft, an outer sleeve and an outer shaft sleeve, one end of the main shaft is rotatably connected to the outer sleeve, the other end of the main shaft is provided with an external thread, the outer shaft sleeve is provided with an internal thread hole matched with the external thread, and the outer side wall of the outer sleeve is rotatably connected with a plurality of ejector rods for opening a tulip contact. The device has the advantages that the inner threaded hole in the outer shaft sleeve is matched with the outer thread of the main shaft, so that when the main shaft rotates, the outer shaft sleeve can be controlled to do horizontal rectilinear motion on the main shaft, and the outer shaft sleeve can be controlled to do horizontal rectilinear motion on the main shaft; as the outer shaft sleeve is rotatably connected with the supporting rod connected with the ejector rod, the supporting rod can control the ejector rod to be unfolded outwards or folded inwards under the action of the outer shaft sleeve, so that the ejector rod is controlled to open the tulip contact, the tulip contact can be effectively disassembled and assembled, and compared with a traditional disassembling and assembling mode, the tulip contact disassembling and assembling device is more convenient and quicker.

Description

Technical Field

[0001] The present invention relates to a device for disassembling and assembling a plum blossom contactor. Background Art

[0002] The plum blossom contactor is a basic accessory widely used in electrical equipment. It mainly includes a support frame, a tension spring, and a plurality of contact fingers. The support frame is an annular body, and a plurality of contact fingers are arranged inside the annular body. Annular grooves are respectively formed on the outer walls at both ends of the annular body, and the tension spring is arranged in the annular grooves. During use, an oxide layer will form on the surface of the contact fingers after long-term operation under high current conditions, resulting in an increase in contact resistance, causing the contactor to heat up or even burn out the contactor. Therefore, regular maintenance is required.

[0003] The existing traditional method for disassembling and assembling a plum blossom contactor is to directly pry open the spring on the plum blossom contactor with a screwdriver, and then press the front end of the plum blossom contactor forcefully to expand the plum blossom contactor. Pressure is applied from the outside of the plum blossom contactor to complete the disassembly and assembly. During the disassembly and assembly process, it is easy to scratch the plum blossom contactor. When pressing the front end of the plum blossom contactor forcefully, the force is uneven, which easily causes the contact piece to deform, damages the structure of the plum blossom contactor, resulting in poor contact of the conductive part, prone to failure, and potential safety hazards. At the same time, the disassembly and assembly steps are cumbersome and time-consuming. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem of time-consuming and laborious existing in the traditional disassembly and assembly method of plum blossom contactors, and to provide a device for disassembling and assembling plum blossom contactors. The strut on the outer shaft sleeve drives the ejector rod to expand the plum blossom contactor, thereby simplifying the disassembly and assembly process of the plum blossom contactor and greatly improving the work efficiency.

[0005] To solve the above technical problems, the present invention is realized through the following technical solutions: A device for disassembling and assembling a plum blossom contactor includes a main shaft, an outer sleeve, and an outer shaft sleeve. One end of the main shaft is rotatably connected to the outer sleeve, and the other end of the main shaft is provided with an external thread. The outer shaft sleeve is provided with an internal thread hole that matches the external thread. A plurality of ejector rods for expanding the plum blossom contactor are rotatably connected to the outer side wall of the outer sleeve, and the ejector rods are evenly arranged on the outer side wall of the outer sleeve. A strut connected to the ejector rod is rotatably connected to the outer side wall of the outer shaft sleeve;

[0006] An inner shaft sleeve is provided on the outer sleeve. A first mounting seat is rotatably connected to the ejector rod, and a first embedding opening for mounting the first mounting seat is provided on the outer side wall of the inner shaft sleeve;

[0007] A second mounting seat is rotatably connected to the strut, and a second embedding opening for mounting the second mounting seat is provided on the outer shaft sleeve.

[0008] Preferably, a first cover plate, a second cover plate and screws are provided on the inner shaft sleeve. The first cover plate is arranged between the outer sleeve and the inner shaft sleeve. The second cover plate is arranged on one side of the inner shaft sleeve. The screws pass through the second cover plate, the inner shaft sleeve and the first cover plate in sequence and are fixed on the outer sleeve.

[0009] Preferably, a limit nut is provided on the main shaft, and an elastic pin is provided on the limit nut.

[0010] Preferably, the ejector rod includes four front ejector rods and four rear ejector rods, and the front ejector rods and the rear ejector rods are arranged alternately on the outer side wall of the outer sleeve.

[0011] Preferably, both the front ejector rod and the rear ejector rod include a first horizontal portion, a vertical portion and a second horizontal portion. The first horizontal portion is rotatably connected to the mounting seat through a first pin shaft. The vertical portion is arranged between the first horizontal portion and the second horizontal portion. The support rod is rotatably connected to the first horizontal portion.

[0012] Preferably, a top block extending upward is provided on the second horizontal portion, and the top block and the second horizontal portion are of an integral structure.

[0013] Preferably, an inclined section is further provided between the second horizontal portion and the top block.

[0014] Preferably, the top block is an arc-shaped top block.

[0015] Preferably, a third cover plate is provided at both ends of the outer shaft sleeve, and the second mounting seat is limited on the outer shaft sleeve through the third cover plate.

[0016] Preferably, a bearing is provided between the outer sleeve and the main shaft, a hand wheel is provided at the end of the main shaft, and knurling is provided on the outer side wall of the outer sleeve.

[0017] In summary, the advantages of the present invention are as follows: The internal threaded holes on the outer shaft sleeve are engaged with the external threads of the main shaft. Therefore, when the main shaft rotates, it can control the outer shaft sleeve to perform a horizontal linear motion on the main shaft. Since a support rod connected to the ejector rod is rotatably connected to the outer shaft sleeve, the support rod can control the ejector rod to expand outward or contract inward under the action of the outer shaft sleeve, thereby controlling the ejector rod to expand the plum blossom contact. It can effectively disassemble and assemble the plum blossom contact, which is more convenient and faster than the traditional disassembly and assembly method. During disassembly, only need to insert the ejector rod into the plum blossom contact, and by rotating the main shaft, the outer shaft sleeve performs a linear motion on the main shaft. The outer shaft sleeve drives the support rod to expand outward, thereby driving the ejector rod to expand outward, and then driving the rear end of the plum blossom contact to lift, completing the disassembly and assembly. This simplifies the overall disassembly process, reduces the working intensity of the operator, improves work efficiency, and the ejector rods are evenly distributed on the outer side wall of the outer sleeve. Therefore, it can ensure that the plum blossom contact is evenly stressed during disassembly, thus avoiding deformation of the contact piece and improving the service life of the plum blossom contact. Secondly, the installation of the ejector rod and the outer sleeve is achieved through the first mounting seat and the first embedding port, which can effectively simplify the installation structure of the ejector rod and facilitate subsequent maintenance. Compared with the structure where the ejector rod is directly installed on the outer sleeve, there is no need to additionally drill mounting pin holes on the inner shaft sleeve, improving the installation quality of the ejector rod and also extending the service life of the outer sleeve. The installation of the support rod and the outer shaft sleeve is achieved through the second mounting seat and the second embedding port, which can simplify the installation structure between the support rod and the outer shaft sleeve. Compared with the structure where the support rod is directly installed on the outer shaft sleeve, there is no need to additionally drill mounting pin holes on the outer shaft sleeve, improving the installation quality of the support rod, facilitating subsequent maintenance, and also extending the service life of the outer shaft sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings:

[0019] Figure 1 is a schematic structural diagram of the plum blossom contact disassembly and assembly device of the present invention;

[0020] Figure 2 is a schematic structural diagram of the inner shaft sleeve in the present invention;

[0021] Figure 3 is a schematic structural diagram of the outer shaft sleeve in the present invention;

[0022] Figure 4 is a schematic structural diagram of the plum blossom contact disassembly and assembly device of the present invention when it is expanded.

[0023] Reference numerals:

[0024] 1 spindle, 11 external thread, 12 limit nut, 13 handwheel, 2 outer sleeve, 21 inner sleeve, 22 first mounting seat, 23 first embedding port, 24 first cover plate, 25 second cover plate, 26 screw, 3 outer sleeve, 31 second mounting seat, 32 second embedding port, 33 third cover plate, 4 push rod, 40 first pin shaft, 41 front push rod, 42 rear push rod, 43 first horizontal part, 44 vertical part, 45 second horizontal part, 46 push block, 47 inclined section, 5 support rod, 6 bearing. DETAILED DESCRIPTION

[0025] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the plum blossom contact disassembly and assembly device includes a main shaft 1, a sleeve 2 and an outer sleeve 3, one end of the main shaft 1 is rotatably connected to the sleeve 2, the other end of the main shaft 1 is provided with an external thread 11, and the outer sleeve 3 is provided with an internal thread hole matching the external thread 11, and a plurality of push rods 4 for supporting the plum blossom contacts are rotatably connected to the outer wall of the sleeve 2, and the push rods 4 are evenly arranged on the outer wall of the sleeve 2, and a support rod 5 connected to the push rod 4 is rotatably connected to the outer wall of the outer sleeve 3.

[0026] The internal threaded hole on the outer sleeve 3 cooperates with the external thread 11 of the main shaft 1. Therefore, when the main shaft 1 rotates, the outer sleeve 3 can be controlled to make horizontal linear motion on the main shaft 1. Since the outer sleeve 3 is rotatably connected with the support rod 5 connected with the push rod 4, the support rod 5 can control the push rod 4 to expand outward or retract inward under the action of the outer sleeve 3, thereby controlling the push rod 4 to expand the plum blossom contact, which can effectively disassemble and assemble the plum blossom contact. It is more convenient and quicker than the traditional disassembly and assembly method. When disassembling, you only need to extend the push rod 4 into the inside of the plum blossom contact. By rotating the main shaft 1 to make the outer sleeve 3 move linearly on the main shaft 1, the outer sleeve 3 drives the support rod 5 to expand outward, thereby driving the push rod 4 to expand outward, thereby driving the rear end of the plum blossom contact to be supported, and disassembly and assembly are completed, thereby simplifying the overall disassembly process, reducing the work intensity of the operator, and improving work efficiency. Moreover, the push rod 4 is evenly distributed on the outer wall of the outer sleeve 2. Therefore, it can ensure that the plum blossom contact can be evenly stressed when disassembling, thereby avoiding deformation of the contact piece and increasing the service life of the plum blossom contact.

[0027] An inner shaft sleeve 21 is provided on the outer sleeve 2, and a first mounting seat 22 is rotatably connected to the ejector rod. In this embodiment, the ejector rod is rotatably connected to the first mounting seat 22 through a second pin shaft. A first embedding port 23 for mounting the first mounting seat is provided on the outer side wall of the inner shaft sleeve. The installation of the ejector rod and the outer sleeve is realized through the first mounting seat and the first embedding port, which can effectively simplify the installation structure of the ejector rod and facilitate subsequent maintenance. Compared with the structure in which the ejector rod is directly mounted on the outer sleeve, there is no need to additionally drill an installation hole for the installation pin shaft on the inner shaft sleeve, improving the installation quality of the ejector rod and also extending the service life of the outer sleeve. A first cover plate 24, a second cover plate 25 and a screw 26 are provided on the inner shaft sleeve 21. The first cover plate 24 is arranged between the outer sleeve 2 and the inner shaft sleeve 21. The second cover plate 25 is arranged on one side of the inner shaft sleeve 21. The screw 26 passes through the second cover plate 25, the inner shaft sleeve 21 and the first cover plate 24 in sequence and is fixed on the outer sleeve 2. In this embodiment, the first mounting seat 22 is embedded in the first embedding port 23, and the first embedding port 23 can increase the contact area between the first mounting seat 22 and the inner shaft sleeve 21, improving the installation quality of the first mounting seat 22. Secondly, the setting of the first cover plate 24 and the second cover plate 25 can play a certain role in fixing and limiting the first mounting seat 22, preventing the first mounting seat 22 from sliding relative to the first embedding port 23 during operation, improving the fixing quality of the first mounting seat 22 and being beneficial to the rotation of the ejector rod 4. A limit nut 12 is provided on the main shaft 1, and an elastic pin is provided on the limit nut 12. On the one hand, it can effectively limit the sliding displacement of the outer shaft sleeve 3 on the main shaft 1, and on the other hand, it can play a certain role in fixing the second cover plate 25. The elastic pin can fix the limit nut on the main shaft, preventing relative movement between the limit nut and the main shaft. In this embodiment, the position of the limit nut can be adjusted according to actual operation requirements to meet different disassembly and assembly needs.

[0028] The ejector rod 4 includes four front ejector rods 41 and four rear ejector rods 42. The front ejector rods 41 and the rear ejector rods 42 are arranged alternately on the outer side wall of the outer sleeve 2, enabling double force on the plum blossom contact in the front and rear directions, ensuring the balance of the force, and thus improving the opening quality of the plum blossom contact. The front ejector rods 41 and the rear ejector rods 42 both include a first horizontal portion 43, a vertical portion 44, and a second horizontal portion 45. The first horizontal portion 43 is rotatably connected to the mounting seat through a first pin shaft 40. The vertical portion 44 is arranged between the first horizontal portion 43 and the second horizontal portion 45. The support rod 5 is rotatably connected to the first horizontal portion 43. In this embodiment, the support rod 5 is rotatably connected to the first horizontal portion 43 through a rotating shaft, which can adapt to plum blossom contacts of different models, and the overall installation and disassembly are convenient. An upward-extending top block 46 is provided on the second horizontal portion 45, and the top block 46 and the second horizontal portion 45 are of an integral structure. An inclined section 47 is further provided between the second horizontal portion and the top block. The setting of the inclined section can increase the initial height of the top block and effectively reduce the opening angle of the ejector rod. The top block is an arc-shaped top block. The arc-shaped top block can increase the contact area with the plum blossom contact, ensure that the entire ejector rod is distributed in an arc shape when opened, improve the opening quality of the plum blossom contact, and is conducive to the top block fitting the inner wall of the plum blossom contact, ensuring that the inner wall (or contact surface) of the plum blossom contact can be evenly stressed when opened. In this embodiment, both the front ejector rods and the rear ejector rods are set as an integral structure, which can improve the overall installation strength, simplify the installation process between the first horizontal portion 43, the vertical portion 44, and the second horizontal portion 45, and simplify the overall production process.

[0029] A second mounting seat 31 is rotatably connected to the support rod. A second embedding opening 32 for mounting the second mounting seat is provided on the outer shaft sleeve. The installation of the support rod and the outer shaft sleeve is realized through the second mounting seat and the second embedding opening, which can simplify the installation structure between the support rod and the outer shaft sleeve. Compared with the structure where the support rod is directly mounted on the outer shaft sleeve, there is no need to additionally drill an installation pin hole on the outer shaft sleeve, improving the installation quality of the support rod, facilitating subsequent maintenance, and also extending the service life of the outer shaft sleeve. In this embodiment, the support rod 5 is rotatably connected to the second mounting seat 31 through a third pin shaft, simplifying the installation structure of the support rod 5 and facilitating subsequent maintenance. Third cover plates 33 are provided at both ends of the outer shaft sleeve 3. The second mounting seat 31 is limited on the outer shaft sleeve 3 through the third cover plates 33. The setting of the second embedding opening 32 facilitates the quick installation of the second mounting seat 31 on the outer shaft sleeve 3. Specifically, the second mounting seat 31 is embedded in the second embedding opening 32. Secondly, the setting of the third cover plates 33 can limit the second mounting seat 31 in the second embedding opening 32 to prevent relative sliding of the second mounting seat 31 relative to the second embedding opening 32 during operation. In this embodiment, the third cover plates 33 are fixed to the outer shaft sleeve 3 through countersunk head screws. A bearing 6 is provided between the outer sleeve 2 and the main shaft 1, and a handwheel 13 is provided at the end of the main shaft 1. Knurling is provided on the outer side wall of the outer sleeve. The setting of the bearing 6 can ensure the smooth rotation of the main shaft 1. In this embodiment, the bearing 6 is preferably arranged on the main shaft 1. Specifically, a step for mounting the bearing 6 is provided on the main shaft 1, and two bearings 6 are provided. The setting of the handwheel 13 facilitates the rotation of the main shaft 1. The setting of the knurling can increase the friction on the surface of the outer sleeve, facilitating use.

[0030] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present invention are covered by the patent scope of the present invention.

Claims

1. Plum blossom contact disassembly and assembly device, characterized in that: It includes a main shaft, an outer sleeve, and an outer shaft sleeve. One end of the main shaft is rotatably connected to the outer sleeve. The other end of the main shaft is provided with an external thread. The outer shaft sleeve is provided with an internal thread hole that matches the external thread. A number of ejector rods for expanding the plum blossom contacts are rotatably connected to the outer side wall of the outer sleeve, and the ejector rods are evenly arranged on the outer side wall of the outer sleeve. A support rod connected to the ejector rod is rotatably connected to the outer side wall of the outer shaft sleeve; An inner shaft sleeve is provided on the outer sleeve. A first mounting seat is rotatably connected to the ejector rod. A first embedding opening for mounting the first mounting seat is provided on the outer side wall of the inner shaft sleeve; A second mounting seat is rotatably connected to the support rod. A second embedding opening for mounting the second mounting seat is provided on the outer shaft sleeve.

2. The disassembling and assembling device for plum blossom contacts according to claim 1, wherein: A first cover plate, a second cover plate, and screws are provided on the inner shaft sleeve. The first cover plate is arranged between the outer sleeve and the inner shaft sleeve. The second cover plate is arranged on one side of the inner shaft sleeve. The screws pass through the second cover plate, the inner shaft sleeve, and the first cover plate in sequence and are fixed on the outer sleeve.

3. The plum blossom contact disassembly and assembly device according to claim 2, characterized in that: A limit nut is provided on the main shaft, and an elastic pin is provided on the limit nut.

4. The plum blossom contact disassembly and assembly device according to claim 1, characterized in that: The ejector rod includes four front ejector rods and four rear ejector rods, and the front ejector rods and the rear ejector rods are arranged alternately on the outer side wall of the outer sleeve.

5. The plum blossom contact disassembly and assembly device according to claim 4, characterized in that: Both the front ejector rod and the rear ejector rod include a first horizontal portion, a vertical portion, and a second horizontal portion. The first horizontal portion is rotatably connected to the mounting seat through a pin shaft. The vertical portion is arranged between the first horizontal portion and the second horizontal portion. The support rod is rotatably connected to the first horizontal portion.

6. The plum blossom contact disassembly and assembly device according to claim 5, characterized in that: A top block extending upward is provided on the second horizontal portion, and the top block and the second horizontal portion are of an integral structure.

7. The plum blossom contact disassembly and assembly device according to claim 6, characterized in that: An inclined section is further provided between the second horizontal portion and the top block.

8. The plum blossom contact disassembly and assembly device according to claim 6, characterized in that: The top block is an arc-shaped top block.

9. The plum blossom contact disassembly and assembly device according to claim 1, characterized in that: A third cover plate is provided at both ends of the outer shaft sleeve. The second mounting seat is limited on the outer shaft sleeve through the third cover plate.

10. The plum blossom contact disassembly and assembly device according to claim 1, characterized in that: A bearing is provided between the outer sleeve and the main shaft. A handwheel is provided at the end of the main shaft. Knurling is provided on the outer side wall of the outer sleeve.

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