Circuit breaker contact mechanism assembling device

Abstract

The utility model discloses a circuit breaker contact mechanism assembling device, which relates to the field of circuit breaker contacts and comprises a main body, four turnover expansion rods are uniformly arranged at the left end of the main body, four fixing pieces are uniformly and fixedly mounted at the edge of the left end of the main body, and connecting pieces are fixedly mounted at one ends, close to the main body, of the four expansion rods. The connecting pieces at one ends of the four expansion rods are rotationally connected to the four fixing pieces in a sleeving mode respectively, the outer wall of the main body is movably connected with a circular ring in a sleeving mode, steel cables are fixedly connected between the outer walls of the four expansion rods and the circular ring, a spiral groove is formed in the right end of the main body, and four notches communicated with the spiral groove are evenly formed in the side wall of the main body. A bolt is inserted into the screw groove in a threaded mode, and one end of the bolt is rotationally connected with a moving rod. According to the utility model, the four expansion rods are pulled at the same time through the steel cable for expansion, and the four expansion rods can expand the tulip contact, so that the tulip contact can be rapidly installed on the circuit breaker.

Description

Technical Field

[0001] The utility model relates to the field of circuit breaker contacts, in particular to an assembly device for a circuit breaker contact mechanism. Background Art

[0002] The term "vacuum circuit breaker" is derived from the fact that both the arc extinguishing medium and the insulating medium in the contact gap after arc extinguishing are high vacuum. It is characterized by its small size, light weight, suitability for frequent operation, and the fact that arc extinguishing does not require maintenance. It is widely used in power distribution networks. The plum blossom contact is a key component in vacuum circuit breakers for connecting and disconnecting circuits. Its unique design enables it to maintain a stable electrical connection under high voltage and high current conditions while effectively controlling the generation and extinction of arcs, thereby protecting circuits and equipment from damage. The plum blossom contact requires regular inspection and timely cleaning of its surface oxide layer to maintain good electrical conductivity. If the plum blossom contact spring is found to be aging or has lost its elasticity, it should be replaced promptly to ensure contact pressure. These inspections require disassembly and assembly of the plum blossom contact. However, due to the spring sheathing on the plum blossom contact, assembly is extremely difficult. Direct and forceful removal can easily damage the mounting structure, seriously affecting the normal use of the contact. To address this issue, the present application proposes a circuit breaker contact mechanism assembly device. Utility Model Content

[0003] In view of the above problems existing in the existing circuit breaker contact mechanism assembly device, the present utility model is proposed.

[0004] Therefore, the purpose of the present invention is to provide a circuit breaker contact mechanism assembly device, which solves the problem that the plum blossom contacts of vacuum circuit breaker are difficult to install and the plum blossom contacts and the installation structure are easily damaged during the installation process.

[0005] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0006] A circuit breaker contact mechanism assembly device includes a main body, four reversible expansion rods are evenly provided on the left end of the main body, four fixing parts are evenly and fixedly installed at the edge of the left end of the main body, connecting parts are fixedly installed on the ends of the four expansion rods close to the main body, the connecting parts at one end of the four expansion rods are respectively rotatably sleeved on the four fixing parts, a circular ring is movably sleeved on the outer wall of the main body, and steel cables are fixedly connected between the outer walls of the four expansion rods and the circular rings, a screw groove is provided at the right end of the main body, and four notches connected to the screw groove are evenly provided on the side wall of the main body, bolts are threadedly inserted in the screw groove, one end of the bolt is rotatably connected to the moving rod, and a connecting rod fixedly connected to the moving rod and the inner wall of the circular ring is provided in each of the four notches.

[0007] Preferably, four fixed blocks are evenly and fixedly installed on the side wall of the left end of the main body, and rotatable fixed pulleys are provided between the four fixed blocks. The four steel cables respectively pass around the fixed pulleys between the corresponding fixed blocks.

[0008] Preferably, a groove is provided at one end of the movable rod close to the bolt, a bearing is fixedly installed in the groove, and a rod shaft fixedly connected to the inner ring wall of the bearing is provided at one end of the bolt.

[0009] Preferably, an elastic rope is provided between the ends of the four expansion rods away from the main body, the elastic rope is arranged in a cross shape, and the four ends of the elastic rope are fixedly connected to the four expansion rods respectively.

[0010] Preferably, the expansion rods are configured to be flat, and the outer sidewalls of each expansion rod are configured to be arc-shaped.

[0011] Preferably, the diameter of the moving rod is smaller than the diameter of the bolt, and the side wall of the moving rod does not contact the inner wall of the screw groove.

[0012] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0013] By tightening the bolt, the moving rod is driven to move, and the moving rod can drive the ring to move outside the main body through the connecting rod, so that the four expansion rods can be pulled at the same time by the steel cable to expand. The four expansion rods can expand the plum blossom contacts, and the plum blossom contacts can be quickly installed on the circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is an enlarged structural diagram of point A of the utility model;

[0017] Figure 3 This is a side structural diagram of the connection between the main body and the expansion rod of the utility model;

[0018] Figure 4 This is a schematic diagram of the cross-sectional structure of the connection between the main body and the screw rod of the utility model;

[0019] Figure 5 This is a schematic structural diagram of the expansion rod of the utility model;

[0020] Description of reference numerals:

[0021] 1. Main body; 2. Expansion rod; 3. Connecting piece; 4. Fixing piece; 5. Elastic rope; 6. Ring; 7. Fixing block; 8. Fixed pulley; 9. Steel cable; 10. Screw groove; 11. Bolt; 12. Moving rod; 13. Notch; 14. Connecting rod; 15. Bearing. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0023] The utility model provides Figure 1-5 The shown device is a contact mechanism assembly device for a circuit breaker, comprising a main body 1, four reversible expansion rods 2 evenly provided on the left end of the main body 1, four fixing parts 4 evenly and fixedly installed at the edge of the left end of the main body 1, a connecting part 3 fixedly installed on the end of the four expansion rods 2 close to the main body 1, the connecting parts 3 at one end of the four expansion rods 2 are respectively rotatably sleeved on the four fixing parts 4, a circular ring 6 is movably sleeved on the outer wall of the main body 1, and a steel cable 9 is fixedly connected between the outer wall of the four expansion rods 2 and the circular ring 6, a screw groove 10 is provided at the right end of the main body 1, and four notches 13 connected to the screw groove 10 are evenly provided on the side wall of the main body 1, a bolt 11 is threadedly inserted in the screw groove 10, one end of the bolt 11 is rotatably connected to the moving rod 12, and a connecting rod 14 fixedly connected to the moving rod 12 and the inner wall of the circular ring 6 is provided in each of the four notches 13.

[0024] In order to allow the steel cable 9 to smoothly pull the expansion rod 2 to perform expansion movement, Figure 1 and Figure 2 As shown, four fixed blocks 7 are evenly and fixedly installed on the side wall of the left end of the main body 1, and a rotatable fixed pulley 8 is provided between the four fixed blocks 7. The four steel cables 9 pass around the fixed pulleys 8 between the corresponding fixed blocks 7 respectively. The fixed pulley 8 can make it easier for the steel cables 9 to pull the expansion rod 2, and under the action of the fixed pulley 8, the steel cables 9 will not come into contact with the main body 1, thereby reducing the friction on the steel cables 9.

[0025] In order to complete the connection between the moving rod 12 and the bolt 11, as shown Figure 4As shown, a groove is provided at one end of the moving rod 12 close to the bolt 11, and a bearing 15 is fixedly installed in the groove. A rod shaft is provided at one end of the bolt 11 and fixedly connected to the inner ring wall of the bearing 15, so that the moving rod 12 can be rotatably installed at one end of the bolt 11, so that when the bolt 11 is threadedly rotated with the screw groove 10, the moving rod 12 can be driven to move in the screw groove 10, thereby driving the ring 6 to move outside the main body 1 through the four connecting rods 14. When the ring 6 moves, the four expansion rods 2 can be pulled at the same time by the steel cable 9 to expand, thereby completing the expansion of the plum blossom contact.

[0026] In order to make the four expansion rods 2 close together smoothly, Figure 1 and Figure 3 As shown, an elastic rope 5 is provided between the ends of the four expansion rods 2 away from the main body 1. The elastic rope 5 is arranged in a cross shape, and the four ends of the elastic rope 5 are respectively fixedly connected to the four expansion rods 2. Under the action of the elastic rope 5, the four expansion rods 2 can be prevented from spreading out at will under the action of gravity.

[0027] In order to prevent the expansion rod 2 from scratching the inner wall of the plum blossom contact when expanding, Figure 3 and Figure 5 As shown, the expansion rod 2 is set to be flat, and the outer side wall of each expansion rod 2 is set to be arc-shaped. When the expansion rod 2 expands the plum blossom contact, the expansion rod 2 with an arc surface can avoid damaging the inner wall of the plum blossom contact.

[0028] Finally, in order to prevent the moving rod 12 from affecting the thread rotation between the bolt 11 and the screw groove 10, as shown in FIG. Figure 4 As shown, the diameter of the moving rod 12 is smaller than the diameter of the bolt 11, and the side wall of the moving rod 12 does not contact the inner wall of the screw groove 10, thereby preventing the moving rod 12 from contacting the threads of the inner wall of the screw groove 10, resulting in the bolt 11 being unable to rotate normally in the screw groove 10.

[0029] When using the device to assemble the plum blossom contact, first put the unexpanded plum blossom contact on the four expansion rods 2, then tighten the bolt 11 to make it threaded with the screw groove 10, thereby driving the moving rod 12 to move its position in the screw groove 10, and the moving rod 12 drives the ring 6 to move outside the main body 1 through the connecting rod 14, so that the ring 6 pulls the four expansion rods 2 at the same time through the steel cable 9 to perform outward expansion movement. Under the pulling of the steel cable 9, the connecting piece 3 at one end of the expansion rod 2 is flipped with the corresponding fixing piece 4 as the center, thereby completing the expansion of the plum blossom contact, and then the expanded plum blossom contact can be easily put on the mounting structure of the vacuum circuit breaker.

[0030] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A circuit breaker contact mechanism assembly device, comprising a main body (1), characterized in that: The left end of the main body (1) is evenly provided with four reversible expansion rods (2), and four fixing members (4) are evenly and fixedly installed at the edge of the left end of the main body (1). The four expansion rods (2) are fixedly installed with a connecting member (3) at one end close to the main body (1). The connecting members (3) at one end of the four expansion rods (2) are respectively rotatably sleeved on the four fixing members (4). The outer wall of the main body (1) is movably sleeved with a ring (6). The outer wall of the four expansion rods (2) and the circular ring (6) are connected. A steel cable (9) is fixedly connected between the rings (6); a screw groove (10) is provided at the right end of the main body (1); four notches (13) connected to the screw groove (10) are evenly provided on the side wall of the main body (1); a bolt (11) is threadedly inserted into the screw groove (10); one end of the bolt (11) is rotatably connected to a moving rod (12); and a connecting rod (14) fixedly connected to the moving rod (12) and the inner wall of the ring (6) is provided in each of the four notches (13).

2. The circuit breaker contact mechanism assembly device according to claim 1, characterized in that: Four fixed blocks (7) are evenly and fixedly installed on the side wall of the left end of the main body (1), and rotatable fixed pulleys (8) are provided between the four fixed blocks (7). The four steel cables (9) respectively pass through the fixed pulleys (8) between the corresponding fixed blocks (7).

3. The circuit breaker contact mechanism assembly device according to claim 1, characterized in that: A groove is provided at one end of the movable rod (12) close to the bolt (11), a bearing (15) is fixedly installed in the groove, and a rod shaft is provided at one end of the bolt (11) and is fixedly connected to the inner ring wall of the bearing (15).

4. The circuit breaker contact mechanism assembly device according to claim 1, characterized in that: An elastic cord (5) is provided between the ends of the four expansion rods (2) away from the main body (1); the elastic cord (5) is arranged in a cross shape, and the four ends of the elastic cord (5) are respectively fixedly connected to the four expansion rods (2).

5. The circuit breaker contact mechanism assembly device according to claim 1, characterized in that: The expansion rods (2) are configured to be flat, and the outer side wall of each expansion rod (2) is configured to be arc-shaped.

6. The circuit breaker contact mechanism assembly device according to claim 1, characterized in that: The diameter of the moving rod (12) is smaller than the diameter of the bolt (11), and the side wall of the moving rod (12) does not contact the inner wall of the screw groove (10).

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