Manual isolating switch limiting device

Abstract

The utility model discloses a manual isolating switch limiting device, and relates to the field of manual isolating switches. The utility model aims to solve the technical problems that the service life of equipment is shortened and the replacement cost is relatively high because a knife edge is sunken and deformed due to long-term use of an existing manual isolating switch limiting device. A manual isolating switch limiting device comprises a limiting base, a connecting block is arranged at the top of the limiting base, the limiting base and the connecting block form a convex shape, an insulator fixing hole is formed in the connecting block, grooves are formed in the two sides of the limiting base, and a buffering mechanism is arranged on the limiting base. According to the manual isolation switch limiting device, the situation that the service life of equipment is affected due to sinking and deformation of a knife edge caused by long-time use is avoided, the knife edge is protected, the knife edge is buffered through the arranged buffer mechanism, the limiting base can be tightly attached to the supporting plate when the knife edge is limited, and the service life of the equipment is prolonged. And the situation that a gap exists between the knife edge and the limiting base, the knife edge is unstable, and the limiting effect is affected is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of manual isolating switches, in particular to a manual isolating switch limiting device. Background Art

[0002] The limit pin of a manual isolating switch refers to a device that restricts the knife switch from being over-positioned when the knife switch of the electrical manual isolating switch is in place. The power supply equipment of Qingdao Metro Line 2 has been in operation for nearly 6 years. At present, the manual isolating switch is deformed due to frequent knife switch operations, and the collision between the knife edge and the limit pin causes the limit column mounting hole to expand outward, the limit column loosens and falls off, and there is a possibility of over-operation of the knife switch, which poses certain safety hazards. At the same time, during the maintenance process, it was found that after the knife edge and the limit column frequently contacted in the form of "point and surface", the knife edge had depression and deformation problems, resulting in a shortened equipment life and a high replacement cost. It can no longer meet the needs of modern people. In view of these defects, it is necessary to design a manual isolating switch limit device. Utility Model Content

[0003] The purpose of the utility model is to provide a manual isolating switch limit device, which has the function of preventing the knife edge from being dented and deformed due to long-term use, thereby affecting the service life of the equipment, and realizing the protection of the knife edge. The knife edge is buffered by a buffer mechanism, so that the limit base can be close to the support plate when limiting the knife edge, avoiding the existence of a gap between the knife edge and the limit base, making the knife edge unstable and affecting the limiting effect, and can solve the problems in the prior art.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a manual isolating switch limit device, comprising a limit base and a knife edge, the limit base is in contact with the knife edge, a connecting block is provided on the top of the limit base, the limit base and the connecting block form a convex shape, an insulator fixing hole is provided on the connecting block, grooves are provided on both sides of the limit base, and a buffer mechanism is provided on the limit base.

[0005] Preferably, the buffer mechanism includes a support plate, a buffer groove, an installation groove, a first buffer pad, a buffer member and a pressure member, the buffer groove is arranged on the upper surface of the limiting base, a support plate is arranged in the buffer groove, a buffer member is arranged on the lower surface of the support plate, the buffer member is arranged in the installation groove, and a pressure member is arranged at the bottom of the installation groove.

[0006] Preferably, the size of the buffer groove matches the size of the support plate, and a first buffer pad is provided at the bottom of the buffer groove.

[0007] Preferably, the buffer member includes a buffer pressure block, an elastic member and a buffer pressure rod, the lower surface of the buffer pressure block is provided with a buffer pressure rod, the surface of the buffer pressure rod is covered with an elastic member, one end of the elastic member contacts the lower surface of the buffer pressure block, and the other end is fixed to the mounting groove.

[0008] Preferably, the bottom of the buffer pressure rod is an inclined surface, and the upper surface of the second buffer pad is set as an inclined surface that matches the inclined surface of the bottom of the buffer pressure rod, and the elastic member is a spring made of metal material.

[0009] Preferably, the pressing member comprises a pressing block and a second buffer pad, the pressing block is fixed at the bottom of the mounting groove, and the second buffer pad is disposed on the upper surface of the pressing block.

[0010] Preferably, the second buffer pad and the first buffer pad are both elastic rubber pads, and the material of the support plate is the same as that of the limiting base.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] The manual isolating switch limit device can prevent the knife edge from being sunken and deformed due to long-term use, thereby affecting the service life of the equipment. The insulator fixing hole is used for fixing to prevent the limit base from being loosened and falling off after long-term use. At the same time, the buffer mechanism on the limit base contacts the knife edge to protect the knife edge, solves the problem of large single-point contact wear, and extends the service life of the equipment. The knife edge is buffered by the buffer mechanism, so that the limit base can be close to the support plate when limiting the knife edge, avoiding a gap between the knife edge and the limit base, making the knife edge unstable and affecting the limiting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the installation of the utility model;

[0014] Figure 2 It is the front view of the utility model;

[0015] Figure 3 It is a top view of the utility model;

[0016] Figure 4 It is a left view of the utility model;

[0017] Figure 5 It is a schematic diagram of the buffer mechanism of the utility model.

[0018] In the figure: 1. limit base; 2. groove; 3. insulator fixing hole; 4. connecting block; 5. knife edge; 6. buffer mechanism; 61. support plate; 62. buffer groove; 63. mounting groove; 64. first buffer pad; 65. buffer member; 651. buffer pressure block; 652. elastic member; 653. buffer pressure rod; 66. pressing member; 661. pressing block; 662. second buffer pad. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present utility model to clearly and completely describe the technical solutions in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present utility model.

[0020] In order to solve the technical problem that the existing manual isolating switch limit device has a concave and deformed blade after the blade and the limit column frequently contact in the form of "point and surface", resulting in a shortened service life of the equipment and a high replacement cost, please refer to Figure 1-Figure 5 , this embodiment provides the following technical solutions:

[0021] A manual isolating switch limit device comprises a limit base 1 and a blade 5, wherein the limit base 1 is in contact with the blade 5, a connection block 4 is arranged on the top of the limit base 1, and the limit base 1 and the connection block 4 form a convex shape. By being arranged in a convex shape, the original limit device can be replaced, and the insulator fixing hole 3 is used for fixing to prevent the limit base 1 from being easily loosened and falling off after long-term use. The insulator fixing hole 3 is arranged on the connection block 4, and grooves 2 are arranged on both sides of the limit base 1. A buffer mechanism 6 is arranged on the limit base 1, and the buffer mechanism 6 comprises a support plate 61, a buffer groove 62, an installation groove 63, and a first buffer pad 6 4. Buffer 65 and pressing member 66. Buffer groove 62 is arranged on the upper surface of limit base 1. Support plate 61 is arranged in buffer groove 62. Buffer 65 is arranged on the lower surface of support plate 61. Buffer 65 includes buffer pressing block 651, elastic member 652 and buffer pressing rod 653. Buffer pressing rod 653 is arranged on the lower surface of buffer pressing block 651. Buffer pressing rod 653 is sleeved with elastic member 652 on the surface. One end of elastic member 652 contacts with the lower surface of buffer pressing block 651, and the other end is fixed on mounting groove 63. The bottom of buffer pressing rod 653 is inclined, and the upper surface of second buffer pad 662 is arranged to contact with buffer. The bottom inclined surface of the punching rod 653 is matched with the inclined surface. The elastic member 652 is a spring made of metal material. The elastic action of the elastic member 652 protects the sliding of the buffer pressure block 651, thereby achieving the buffering of the support plate 61, and can buffer the vibration generated when the blade 5 is lowered. The buffer member 65 is arranged in the installation groove 63, and the bottom of the installation groove 63 is provided with a pressing member 66. The pressing member 66 includes a pressing block 661 and a second buffer pad 662. The pressing block 661 is fixed at the bottom of the installation groove 63. The upper surface of the pressing block 661 is provided with a second buffer pad 662. The second buffer pad 662 and The first buffer pads 64 are all elastic rubber pads. The material of the support plate 61 is the same as that of the limiting base 1. By setting the second buffer pad 662, the acting force is decomposed through the force of the inclined surface, so that the buffer pressure rod 653 can be buffered and protected. The size of the buffer groove 62 matches the size of the support plate 61. The bottom of the buffer groove 62 is provided with a first buffer pad 64. The first buffer pad 64 can be used to buffer the support plate 61 to avoid high pressure on the blade 5 when it is lowered, which causes the support plate 61 to vibrate, and then causes the blade 5 to vibrate. The blade 5 will become loose due to long-term vibration, affecting the use of the equipment.

[0022] To sum up, the manual isolating switch limit device can prevent the blade 5 from being dented and deformed due to long-term use, thereby affecting the service life of the equipment. The limit device is convex in shape and can replace the original limit device. It is fixed by using the insulator fixing hole 3 to prevent the limit base 1 from loosening and falling off after long-term use. At the same time, the buffer mechanism 6 on the limit base 1 contacts the blade 5 to protect the blade 5, solves the problem of large single-point contact wear, and extends the service life of the equipment. The buffer mechanism 6 is set to buffer the blade 5, so that the limit base 1 can be close to the support plate 61 when limiting the blade 5, avoiding the existence of a gap between the blade 5 and the limit base 1, making the blade 5 unstable and affecting the limiting effect.

[0023] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements of a manual disconnect switch limit device includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A manual isolating switch limit device, comprising a limit base (1) and a knife edge (5), characterized in that: The limiting base (1) is in contact with the blade (5), a connecting block (4) is provided on the top of the limiting base (1), the limiting base (1) and the connecting block (4) form a convex shape, an insulator fixing hole (3) is provided on the connecting block (4), grooves (2) are provided on both sides of the limiting base (1), and a buffer mechanism (6) is provided on the limiting base (1).

2. A manual isolating switch limit device according to claim 1, characterized in that: The buffer mechanism (6) comprises a support plate (61), a buffer groove (62), a mounting groove (63), a first buffer pad (64), a buffer member (65) and a pressing member (66); the buffer groove (62) is arranged on the upper surface of the limiting base (1); a support plate (61) is arranged in the buffer groove (62); a buffer member (65) is arranged on the lower surface of the support plate (61); the buffer member (65) is arranged in the mounting groove (63); and a pressing member (66) is arranged at the bottom of the mounting groove (63).

3. A manual isolating switch limit device according to claim 2, characterized in that: The size of the buffer groove (62) matches the size of the support plate (61), and a first buffer pad (64) is provided at the bottom of the buffer groove (62).

4. A manual isolating switch limit device according to claim 2, characterized in that: The buffer member (65) comprises a buffer pressing block (651), an elastic member (652) and a buffer pressing rod (653); the lower surface of the buffer pressing block (651) is provided with a buffer pressing rod (653); the surface of the buffer pressing rod (653) is covered with an elastic member (652); one end of the elastic member (652) contacts the lower surface of the buffer pressing block (651), and the other end is fixed to the mounting groove (63).

5. A manual isolating switch limit device according to claim 4, characterized in that: The bottom of the buffer pressure rod (653) is an inclined surface, and the upper surface of the second buffer pad (662) is arranged as an inclined surface matching the bottom inclined surface of the buffer pressure rod (653). The elastic member (652) is a spring made of metal material.

6. A manual isolating switch limit device according to claim 2, characterized in that: The pressing member (66) comprises a pressing block (661) and a second buffer pad (662); the pressing block (661) is fixed to the bottom of the mounting groove (63); and the second buffer pad (662) is provided on the upper surface of the pressing block (661).

7. A manual isolating switch limit device according to claim 6, characterized in that: The second buffer pad (662) and the first buffer pad (64) are both elastic rubber pads, and the material of the support plate (61) is the same as that of the limiting base (1).

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