A wear-resistant and silent contactor contact support device

Abstract

The present invention relates to a wear-resistant and silent contact support device for a contactor. A wear-resistant guide is provided in the inner cavity of the base, and is used in conjunction with the wear-resistant positioning member of the contact support. Wear-resistant materials can be selected according to implementation requirements, such as wear resistance level, thereby reducing the friction and collision between the contact support and the base during the movement of the contact support, reducing the dust generated by the friction and collision, and reducing the working noise of the contactor to ensure the effective operation of the contactor. At the same time, the provision of the wear-resistant guide improves the smoothness of the movement of the contact support, reduces the collision of the iron core, and helps to improve the mechanical life of the contactor. In the present invention, the wear-resistant guide and the wear-resistant positioning member can be installed without nails, and can quickly realize the disassembly and assembly operations, effectively improve the production efficiency, and facilitate the later maintenance and replacement. Furthermore, when the present invention is implemented, it can not only select more common materials, but also simplify the structural design, simplify the assembly process, and reduce costs.

Description

Technical Field

[0001] The invention relates to the technical field of contactors, and more particularly to a wear-resistant and noiseless contact support device for a contactor. Background Art

[0002] When a traditional contactor is in operation, dust is generated due to friction and collision between the contact support and the base, which in turn causes dust accumulation during the frequent operation of the contactor, causing the contactor to produce working noise and affecting the use of the contactor.

[0003] In order to solve the problems of traditional contactors due to friction and collision, Chinese utility model patent 201621015991.1 discloses a contact support device for a contactor, including a contact support provided with a pin hole for connecting an armature, the contact support having a shoulder that collides with a housing, the upper surface of the shoulder being an impact surface, a lateral wear-resistant member being installed on the side of the shoulder and extending to both ends of the shoulder, a buffer portion of the lateral wear-resistant member being formed on the impact surface of the shoulder, and the buffer portion being away from the pin hole of the contact support.

[0004] Although the above utility model can achieve a certain effect of suppressing dust generation, since only the positioning parts on both sides are made of wear-resistant materials, and other matching parts are not wear-resistant, dust is still easily generated due to friction and collision. In addition, the lateral wear-resistant parts arranged on the side of the shoulder must also be small in size due to the small size of the shoulder, and the service life is short. After the service life expires, the effect of suppressing dust generation can no longer be provided. Summary of the invention

[0005] The object of the present invention is to overcome the deficiencies of the prior art and to provide a wear-resistant and silent contactor contact support device which can further avoid dust generation from the base and contact support due to the operation of the contactor, reduce the working noise of the contactor, and increase its own working life and the mechanical life of the contactor.

[0006] The technical solution of the present invention is as follows:

[0007] A wear-resistant and silent contactor contact support device comprises a contact support, a base and a pedestal. The contact support is movably sleeved in an inner cavity of the base. A wear-resistant guide is arranged on the inner cavity side wall. The wear-resistant guide covers the inner cavity side wall along the movement direction of the contact support.

[0008] Preferably, the anti-friction guide member is an anti-friction guide sleeve arranged along the circumference of the inner cavity.

[0009] Preferably, the anti-friction guide member comprises a plurality of anti-friction guide plates, which are arranged on the side wall of the inner cavity corresponding to the friction positions of the contact supports.

[0010] Preferably, the anti-friction guide member comprises two anti-friction guide covers, and each anti-friction guide cover is arranged corresponding to two impact shoulders supported by the contact.

[0011] Preferably, the anti-friction guide member comprises two anti-friction guide covers, and each anti-friction guide cover is respectively arranged at the same-direction end portions of the two impact shoulders supported by the contact.

[0012] Preferably, the anti-friction guide and the base are installed by means of a dovetail groove or a dovetail tenon, or by means of a "T"-shaped groove or a "T"-shaped rib, or by means of a socket or a pin.

[0013] Preferably, a hook is provided at the bottom end of the anti-friction guide member, and after the anti-friction guide member is installed in place, the hook is buckled onto the bottom end of the base.

[0014] Preferably, the impact shoulder supported by the contact is provided with a wear-resistant positioning piece, and the wear-resistant guide piece and the wear-resistant positioning piece are arranged facing each other.

[0015] Preferably, the anti-friction positioning member includes a plurality of friction parts, and the friction parts are arranged on the contact support corresponding to the anti-friction guide member.

[0016] Preferably, the anti-wear positioning member further comprises a plurality of buffer portions, and the buffer portions are arranged on the upper surface of the impact shoulder.

[0017] Preferably, the friction part and the buffer part arranged on the same impact shoulder are arranged as a lateral wear-resistant part with an integrated structure.

[0018] Preferably, the friction part and the buffer part respectively arranged at the same-direction ends of different impact shoulders are arranged as end wear-resistant parts of an integral structure.

[0019] Preferably, the end wear stopper has a clamping arm extending along the side surface of the impact shoulder.

[0020] The beneficial effects of the present invention are as follows:

[0021] The wear-resistant and silent contactor contact support device described in the present invention is provided with a wear-resistant guide in the inner cavity of the base, and wear-resistant materials can be selected according to implementation requirements, such as wear resistance level, so as to reduce the friction and collision between the contact support and the base during the movement of the contact support, reduce the dust generated by friction and collision, and achieve the reduction of the working noise of the contactor to ensure the effective operation of the contactor. At the same time, the setting of the wear-resistant guide improves the smoothness of the movement of the contact support, slows down the collision of the iron core, and helps to improve the mechanical life of the contactor. Compared with the prior art of the lateral wear-resistant parts only on the side of the shoulder, the wear-resistant guide of the present invention is larger due to the larger inner cavity size of the base, which determines that the size of the wear-resistant guide is also larger, can provide longer wear resistance, and has a longer structural life. In addition, the use of the wear-resistant guide of the base in conjunction with the wear-resistant positioning part of the contact support can further improve the effect of suppressing dust generation and reducing working noise, and extend its own working life and the mechanical life of the contactor.

[0022] In the present invention, both the anti-friction guide and the anti-friction positioning member can be installed without nails, and can be quickly disassembled and assembled, effectively improving production efficiency and facilitating later maintenance and replacement. Furthermore, when the present invention is implemented, it can not only select relatively common materials, but also simplify the structural design, simplify the assembly process, and reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 is a structural explosion diagram of Example 1;

[0025] Figure 3 is a schematic diagram of the assembly relationship between the anti-friction positioning member and the anti-friction guide member of Example 1;

[0026] Figure 4 is a schematic structural diagram of the anti-friction positioning member of Example 1;

[0027] Figure 5 is a schematic structural diagram of the contact support of Example 1;

[0028] Figure 6 yes Figure 5 An enlarged schematic diagram of a local A;

[0029] Figure 7 is a schematic structural diagram of the wear-resistant guide plate of Example 1;

[0030] Figure 8 is a schematic diagram of the assembly of the base and the anti-wear guide plate of Example 1;

[0031] Fig. 9 yes Figure 8 An enlarged schematic diagram of a local B;

[0032] Fig.10 is a schematic structural diagram of the anti-wear guide plate of Example 1 when it is installed in place;

[0033] Fig.11 yes Fig.10 An enlarged schematic diagram of a local C;

[0034] Fig.12 is another structural schematic diagram of the wear-resistant guide plate of Example 1;

[0035] Fig.13 is another structural schematic diagram of the wear-resistant guide plate of Example 1;

[0036] Fig.14 is a schematic structural diagram of the wear-resistant guide sleeve of Example 2;

[0037] Fig.15 is another structural schematic diagram of the wear-resistant guide sleeve of Example 2;

[0038] Fig.16 is a schematic structural diagram of the wear-resistant guide cover of Example 3;

[0039] Fig.17 is another structural schematic diagram of the anti-friction guide cover of Example 3;

[0040] Fig.18 is a schematic structural diagram of the wear-resistant guide cover of Example 4;

[0041] Fig.19 is another structural schematic diagram of the wear-resistant guide cover of Example 4;

[0042] Fig. 20 is a schematic structural diagram of the anti-friction positioning member of Example 5;

[0043] Fig.21 is a schematic structural diagram of the anti-friction positioning member of Example 6;

[0044] Fig. 22 is another structural schematic diagram of the anti-friction positioning member of Example 6;

[0045] In the figure: 10 is a contact support, 101 is an impact shoulder, 102 is an embedded groove, 103 is a groove, 104 is a clamping boss, 105 is a clamping hole, 106 is a clamping groove, 107 is a pin hole, 11 is a base, 111 is a guide column, 112 is a dovetail groove, 12 is a base, 20 is a wear-resistant guide plate, 201 is a reinforcing rib, 21 is a wear-resistant guide sleeve, 22 is a wear-resistant guide cover, 23 is a wear-resistant guide cover, 24 is a dovetail tenon, 25 is a latch, 26 is a "T"-shaped rib, 27 is a hook, 30 is a wear-resistant positioning member, 301 is an end wear-resistant member, 31 is a buffer portion, 32 is a friction portion, 33 is a connecting rod, 34 is a clamping hole, 35 is a clamping claw, 36 is a buckle, 37 is a cover, and 38 is a clamping arm. DETAILED DESCRIPTION

[0046] The present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0047] In order to solve the shortcomings of the prior art, such as dust generated due to friction and collision, which causes dust accumulation in the contactor, makes the contactor produce working noise, and affects the life of the contactor, the present invention provides a wear-resistant and silent contact support device for the contactor. By arranging a wear-resistant guide part, the base is protected from friction and collision, dust generation is avoided, and the mechanical life of the product is further improved.

[0048] A wear-resistant and silent contactor contact support device, such as Figure 1 As shown, it includes a contact support 10, a base 11, and a seat 12. The contact support 10 is movably sleeved in the inner cavity of the base 11, and the seat 12 is arranged at the bottom end of the base 11. The side wall of the inner cavity is provided with a wear-resistant guide, and the wear-resistant guide covers the side wall of the inner cavity along the movement direction of the contact support 10. Among them, the wear-resistant guide is in direct contact with the friction position of the contact support 10, thereby avoiding that the contact support 10 and the base 11 are not directly rubbed or hit when the contactor is in operation, thereby avoiding or reducing the generation of dust. Since the inner cavity size of the base 11 is usually large and the height is high, when the wear-resistant guide covers the side wall of the inner cavity along the movement direction of the contact support 10, a long wear-resistant area can be achieved; moreover, a larger size can provide longer wear-resistant performance, thereby extending its own working life and the mechanical life of the contactor.

[0049] Furthermore, in order to further extend its own working life and the mechanical life of the contactor, the present invention provides a dual anti-friction structure, that is, the impact shoulder 101 of the contact support 10 is provided with an anti-friction positioning member 30, and the anti-friction guide member and the anti-friction positioning member 30 are arranged opposite to each other. Then the anti-friction guide member is in direct contact with the anti-friction positioning member 30, thereby avoiding that when the contactor is in operation, the contact support 10 and the base 11 are not directly rubbed or impacted, thereby avoiding or reducing the generation of dust. Under the dual action of the anti-friction guide member and the anti-friction positioning member 30, not only can the own working life and the mechanical life of the contactor be further extended, but also the generation of dust can be further suppressed and the working noise can be reduced.

[0050] Normally, the contact support 10 and the base 11 are made of thermosetting materials, so dust is easily generated when friction and collision occur. In order to avoid the generation of dust, the wear-resistant guide and the wear-resistant positioning member 30 are made of more wear-resistant materials, such as nylon, or other thermoplastic materials with higher wear resistance than thermosetting materials. The thermoplastic material can be one of the following or any combination: polyethylene, polypropylene, polyvinyl chloride, polystyrene, polyoxymethylene, polycarbonate, polyamide, acrylic plastics, other polyolefins and their copolymers, polysulfone, polyphenylene ether, etc. If the contact support 10 and the base 11 are made of thermoplastic materials by means of material replacement in order to improve the wear resistance of the contact support 10 and the base 11, then due to the high requirements of the contact support 10 and the base 11 for heat resistance and arc resistance, other serious defects such as short life and poor performance will occur. However, since the position of the wear-resistant guide and the wear-resistant positioning member 30 does not require high heat resistance and arc resistance, the use of thermoplastic materials can meet the performance requirements of life and performance. Therefore, the present invention is particularly directed to a contactor contact support 10 device in which the contact support 10 and the base 11 are made of thermosetting material.

[0051] The anti-friction guide and the base 11 are installed without nails, including but not limited to the following structures: the anti-friction guide and the base 11 are installed by dovetail grooves 112 and dovetail tenons 24, or by "T"-shaped grooves and "T"-shaped ribs 26, or by jacks and pins. A hook 27 is provided at the bottom end of the anti-friction guide. After the anti-friction guide is installed in place, the hook 27 is buckled on the bottom end of the base 11. The anti-friction guide is fixed in place by assembling the base 12 and the base 11.

[0052] Based on the technical principle, the present invention theoretically only needs to fix the anti-friction positioning member 30 on the contact support 10, install the anti-friction guide member on the base 11, and then use the anti-friction guide member to contact, rub and guide the anti-friction positioning member 30. Furthermore, the anti-friction guide member and the anti-friction positioning member 30 can be designed into different structures according to implementation requirements.

[0053] Example 1

[0054] In this embodiment, the anti-friction guide member includes a plurality of anti-friction guide plates 20, and the anti-friction guide plates 20 correspond to the friction position of the contact support 10 and are arranged on the side wall of the inner cavity. In this embodiment, the friction portion 32 of the anti-friction positioning member 30 is used as the friction position of the contact support 10, that is, the anti-friction guide plate 20 corresponds to the friction portion 32 of the anti-friction positioning member 30. Among them, the inner cavity of the base 11 is provided with four guide columns 111 to form a guide channel. In this embodiment, the side wall of the inner cavity is the side wall of the guide column 111. The anti-friction positioning member 30 includes a plurality of friction portions 32 and a plurality of buffer portions 31. The friction portion 32 is arranged on the contact support 10 corresponding to the anti-friction guide member, the buffer portion 31 is arranged on the upper surface of the impact shoulder 101, and the friction portion 32 is arranged on the side of the impact shoulder 101 facing the anti-friction guide member. Both the buffer portion 31 and the friction portion 32 protrude from the surface of the impact shoulder 101. In this embodiment, the friction part 32 and the buffer part 31 disposed on the same impact shoulder 101 are configured as a lateral wear-resistant part of an integrated structure. The wear-resistant guide part is installed with the base 11 through the dovetail groove 112 and the dovetail tenon 24 .

[0055] Specifically, Figure 2 , Figure 3 As shown, the two sides of the contact support 10 are respectively provided with protruding impact shoulders 101, the anti-friction guide member includes four anti-friction guide plates 20, and the anti-friction positioning member 30 includes two lateral anti-friction members. Figure 4 As shown, each lateral wear-resisting member includes two friction parts 32 and two buffer parts 31. The lateral wear-resisting member is arranged on the side of the impact shoulder 101 and extends along the length direction of the impact shoulder 101. The two buffer parts 31 cover the upper surface of the end of the impact shoulder 101, that is, the buffer parts 31 are located at both ends of the lateral wear-resisting member, wherein the buffer parts 31 and the friction parts 32 are symmetrically arranged with respect to the center of the lateral wear-resisting member. The buffer parts 31 are arranged at both ends of the connecting rod 33, and the friction parts 32 are arranged at the bottom end of the buffer parts 31.

[0056] like Figure 5 As shown, in this embodiment, the contact support 10 is connected to the armature through a shaft hole. Correspondingly, a pin hole 107 is opened at the bottom end of the contact support 10, and the buffer portion 31 is arranged away from the pin hole 107, so that the stress generated during the impact and rebound release is away from the pin hole 107, so as to provide stronger anti-collision performance, thereby obtaining a longer mechanical life.

[0057] The side of the impact shoulder 101 of the contact support 10 is provided with an embedding groove 102 for accommodating the connecting rod 33 of the lateral wear-resistant member. The embedding groove 102 extends to both ends of the impact shoulder 101. Grooves 103 are provided on both sides of the contact support 10 corresponding to the friction part 32. A clamping boss 104 is provided in the groove 103 for clamping the friction part 32 of the lateral wear-resistant member. The friction part 32 is provided with a clamping hole 34 corresponding to the clamping boss 104. The clamping boss 104 and the clamping hole 34 form a nested connection, further enhancing the connection strength of the lateral wear-resistant member. The connecting rod 33 of the lateral wear-resistant member is provided with two claws 35 facing the embedding groove 102, which are used to be clamped with the clamping hole 105 of the embedding groove 102. The connecting rod 33 is provided with a cover 37 corresponding to the pin hole 107. After being installed in place, the cover 37 is covered on the pin hole 107, and the connecting rod 33 is close to the embedding groove 102. A buckle 36 extending toward the contact support and pointing upward is connected to the lower portion of the buffer portion 31 of the lateral wear-resistant member. Figure 6 As shown, a slot 106 is provided on the lower surface of the impact shoulder 101 corresponding to the buckle 36 , and the buckle 36 and the slot 106 are engaged with each other, further enhancing the connection strength of the lateral wear-resistant component.

[0058] like Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 As shown, the top of the anti-friction guide plate 20 is provided with a dovetail tenon 24. Corresponding to the dovetail tenon 24, the inner cavity side wall of the base 11 is surrounded by two corresponding protrusions to form a dovetail groove 112. The bottom end of the anti-friction guide plate 20 is provided with a hook 27, and the tail of the hook 27 is bent upward and hooked. After the anti-friction guide plate 20 is installed in place, the dovetail tenon 24 fits with the dovetail groove 112, and the hook 27 just hits the bottom end of the inner cavity side wall, and then is fixed in place through the connection between the base 12 and the base 11. In order to enhance the structural strength of the anti-friction guide plate 20, a plurality of reinforcing ribs 201 are provided on one side of the back side of the anti-friction member of the anti-friction guide plate 20.

[0059] As a similar structure, such as Fig.12 As shown, a pin is provided at the top of the anti-friction guide plate 20, and a plug hole is provided on the inner cavity side wall of the base 11 corresponding to the pin, and a hook 27 is provided at the bottom of the anti-friction guide plate 20, and the tail of the hook 27 is bent upward and hooked. After the anti-friction guide plate 20 is installed in place, the pin is plugged into the plug hole.

[0060] As another similar structure, Fig.13 As shown, the side surface of the anti-wear guide plate 20 is provided with a "T"-shaped rib 26 along the length direction. Corresponding to the "T"-shaped rib 26, the inner cavity side wall of the base 11 is provided with a "T"-shaped groove along the height direction. The bottom end of the anti-wear guide plate 20 is not provided with a hook 27.

[0061] Example 2

[0062] In this embodiment, the anti-friction guide member is an anti-friction guide sleeve 21 arranged along the circumference of the inner cavity.

[0063] like Fig.14 As shown, the anti-friction guide sleeve 21 corresponds to the dovetail groove 112 of the base 11, and is provided with four dovetail tenons 24. The bottom end of the anti-friction guide sleeve 21 is respectively provided with four hooks 27, and the tail of the hook 27 is not bent upward.

[0064] As a similar structure, such as Fig.15 As shown, the anti-friction guide sleeve 21 corresponds to the "T"-shaped slot of the base 11, and is provided with four "T"-shaped ribs 26, wherein the "T"-shaped ribs 26 extend along the height direction of the anti-friction guide sleeve 21, and correspondingly, the "T"-shaped slot extends along the height direction of the base 11. The bottom end of the anti-friction guide sleeve 21 is not provided with a hook 27.

[0065] Example 3

[0066] In this embodiment, the anti-friction guide member includes two anti-friction guide covers 22 . Each anti-friction guide cover 22 is respectively arranged corresponding to the two impact shoulders 101 of the contact support 10 . The anti-friction positioning member 30 is arranged on the impact shoulders 101 corresponding to the anti-friction guide cover 22 .

[0067] like Fig.16 As shown, each anti-friction guide cover 22 corresponds to the dovetail groove 112 of the base 11 , and is provided with four dovetail tenons 24 , and no hook 27 is provided at the bottom end of the anti-friction guide cover 22 .

[0068] As a similar structure, such as Fig.17 As shown, two "T"-shaped ribs 26 are arranged in the middle position of each anti-friction guide cover 22 along the height direction. Corresponding to the "T"-shaped ribs 26, the base 11 is provided with four "T"-shaped grooves along the height direction. No hook 27 is arranged at the bottom end of the anti-friction guide cover 22.

[0069] Example 4

[0070] In this embodiment, the anti-friction guide member includes two anti-friction guide covers 23, each of which is arranged at the same direction ends of the two impact shoulders 101 of the contact support 10, and the anti-friction positioning member 30 is arranged at the same direction ends of the impact shoulders 101 corresponding to the anti-friction guide covers 23.

[0071] like Fig.18As shown, the anti-abrasion guide cover 23 has a "U" shape and can cover the ends of the two impact shoulders 101 and extend to the sides of the impact shoulders 101. Among them, dovetail tenons 24 are provided at the positions where the anti-abrasion guide cover 23 is located on the sides of the impact shoulders 101. Corresponding to the dovetail tenons 24, four dovetail grooves 112 are provided on the base 11. Two hooks 27 are provided at the bottom end of the anti-abrasion guide cover 23, and the tails of the hooks 27 are bent upward.

[0072] As a similar structure, such as Fig.19 As shown, the anti-abrasion guide cover 23 has a "U" shape and can cover the ends of the two impact shoulders 101 and extend to the sides of the impact shoulders 101. Among them, a "T" shaped rib 26 is provided along the height direction on the outer wall of the anti-abrasion guide cover 23 facing the ends of the impact shoulders 101. Corresponding to the "T" shaped rib 26, two "T" shaped grooves are provided on the base 11. No hooks 27 are provided at the bottom end of the anti-abrasion guide cover 23.

[0073] Since the anti-abrasion guide members in Embodiment 1, Embodiment 3, and Embodiment 4 are of a split structure, theoretically, according to the implementation requirements, the anti-abrasion guide members of different embodiments can be used in combination, such as the combination of similar structures of each embodiment, or the combination of the anti-abrasion guide plate 20 in Embodiment 1, the anti-abrasion guide cover 22 in Embodiment 3, and the anti-abrasion guide cover 23 in Embodiment 4.

[0074] Embodiment 5

[0075] Different from the anti-abrasion positioning member 30 in Embodiment 1, as Fig. 20 shown, in this embodiment, only four friction portions 32 and two covers 37 are provided.

[0076] Embodiment 6

[0077] Different from the anti-abrasion positioning member 30 in Embodiment 1, as Fig.21 shown, in this embodiment, the friction portions 32 and the buffer portions 31 respectively provided at the same-direction ends of different impact shoulders 101 are set as an integral end anti-abrasion member 301. This embodiment is suitable for being used in combination with the anti-abrasion guide cover 23 and making contact at the position facing the ends of the impact shoulders 101.

[0078] As a similar structure, such as Fig. 22 shown, the end anti-abrasion member 301 extends a clamping arm 38 along the side of the impact shoulder 101. Corresponding to the clamping wall, an embedding groove 102 is provided on the side of the impact shoulder 101 for accommodating the clamping arm 38 of the end anti-abrasion member 301, further enhancing the installation strength of the end anti-abrasion member 301.

[0079] The above embodiments are only used to illustrate the present invention, and are not used to limit the present invention. As long as they are based on the technical essence of the present invention, changes and modifications to the above embodiments will fall within the scope of the claims of the present invention.

Claims

1. A wear-resistant and silent contactor contact support device, comprising a contact support, a base, and a base, wherein the contact support is movably sleeved in the inner cavity of the base, characterized in that: The inner cavity side wall is provided with a wear-resistant guide member, which covers the inner cavity side wall along the moving direction of the contact support, and the wear-resistant guide member is in direct contact with the friction position of the contact support.

2. The wear-resistant and noise-proof contactor contact support device according to claim 1, characterized in that: The anti-friction guide member is an anti-friction guide sleeve arranged along the circumference of the inner cavity.

3. The wear-resistant and noise-proof contactor contact support device according to claim 1, characterized in that: The anti-friction guide member comprises a plurality of anti-friction guide plates, which are arranged on the side wall of the inner cavity corresponding to the friction positions of the contact supports.

4. The wear-resistant and noiseless contactor contact support device according to claim 1, characterized in that: The anti-friction guide member comprises two anti-friction guide covers, and each anti-friction guide cover is respectively arranged corresponding to two impact shoulders supported by the contact.

5. The wear-resistant and noise-proof contactor contact support device according to claim 1, characterized in that: The anti-friction guide member comprises two anti-friction guide covers, and each anti-friction guide cover is respectively arranged at the same-direction end portions of two impact shoulders supported by the contact.

6. The wear-resistant and noise-proof contactor contact support device according to any one of claims 2 to 5, characterized in that: The anti-friction guide and the base are installed through dovetail grooves and dovetail tenons, or through "T"-shaped grooves and "T"-shaped ribs, or through blind holes and jacks.

7. The wear-resistant and noise-proof contactor contact support device according to claim 6, characterized in that: The bottom end of the anti-friction guide piece is provided with a hook. After the anti-friction guide piece is installed in place, the hook is buckled and installed on the bottom end of the base.

8. The wear-resistant and noise-proof contactor contact support device according to any one of claims 2 to 5, characterized in that: The impact shoulder supported by the contact is provided with a wear-resistant positioning piece, and the wear-resistant guide piece and the wear-resistant positioning piece are arranged facing each other.

9. The wear-resistant and noise-proof contactor contact support device according to claim 8, characterized in that: The anti-friction positioning member comprises a plurality of friction parts, and the friction parts are arranged on the contact support corresponding to the anti-friction guide member.

10. The wear-resistant and noise-proof contactor contact support device according to claim 9, characterized in that: The anti-friction positioning member also includes a plurality of buffer parts, and the buffer parts are arranged on the upper surface of the impact shoulder.

11. The wear-resistant and noise-proof contactor contact support device according to claim 10, characterized in that: The friction part and the buffer part arranged on the same impact shoulder are arranged as a lateral wear-resistant part of an integrated structure.

12. The wear-resistant and noise-proof contactor contact support device according to claim 10, characterized in that: The friction part and the buffer part respectively arranged at the same-direction ends of different impact shoulders are arranged as an end wear-resistant part of an integrated structure.

13. The wear-resistant and noise-proof contactor contact support device according to claim 12, characterized in that: The end wear stopper has a clamping arm extending along the side of the impact shoulder.

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