Contact stroke measuring device of high-voltage switch cabinet

Abstract

The utility model belongs to the technical field of high-voltage switch cabinet contact stroke measuring devices, and particularly relates to a high-voltage switch cabinet contact stroke measuring device which comprises a circuit breaker handcart. Through the arrangement of the measuring mechanism, the circuit breaker handcart is pushed into a high-voltage switch, one end, far away from a first spring, of a transmission plate abuts against the inner wall of a high-voltage switch cabinet, a switch bin power transmission operation handle is rotated, the circuit breaker handcart is pushed to drive a circuit breaker on the circuit breaker handcart to move and approach a static contact, and a moving contact is inserted into the static contact. The transmission plate is pressed along with movement of the circuit breaker handcart and is injected and locked into the positioning groove, the transmission plate applies pressure to the first spring until the moving contact is completely inserted into the static contact, the high-voltage switch cabinet can be opened at the moment, the circuit breaker handcart is moved out of the high-voltage switch cabinet, and scale marks are arranged on the transmission plate. And the butt joint stroke of the movable and static contacts can be obtained by observing the length of the driving plate retracting into the positioning groove.

Description

Technical Field

[0001] The utility model belongs to the technical field of high-voltage switch cabinet contact stroke measuring devices, in particular to a high-voltage switch cabinet contact stroke measuring device. Background Art

[0002] High-voltage switchgear is currently widely used in power supply and distribution systems. The high-voltage switchgear promoted in the power supply system is a fully enclosed center-mounted cabinet. The circuit breaker is the heart of the high-voltage switchgear. The contact stroke of the moving and static contacts of the circuit breaker is related to the reliable operation of the high-voltage switchgear.

[0003] The on-off operation of the circuit breaker mainly relies on the switch compartment power supply operating handle to operate outside the cabinet. The power supply operating handle is used to make the moving and static contacts in the cabinet contact. However, when the moving and static contacts are not inserted into the cabinet for a long time, poor contact will be caused, which is a hidden danger to the safe operation of the switch cabinet. Therefore, a high-voltage switch cabinet contact stroke measuring device is proposed to solve the above problems. Utility Model Content

[0004] In order to make up for the shortcomings of the existing technology, a high-voltage switch cabinet contact stroke measuring device is proposed to solve the problem that the on-off operation of the circuit breaker mainly relies on the switch compartment power supply operating handle to be operated outside the cabinet, and the moving and static contacts in the cabinet are contacted by the power supply operating handle. However, when the insertion stroke of the moving and static contacts is not enough, poor contact will be caused, which is a hidden danger to the safe operation of the switch cabinet.

[0005] The technical solution adopted by the utility model to solve the technical problem is as follows: a high-voltage switch cabinet contact stroke measuring device described in the utility model comprises a circuit breaker trolley; a positioning plate is fixedly connected to one side of the circuit breaker trolley, a positioning groove is provided in the positioning plate, a transmission plate is slidably connected in the positioning groove, one end of the transmission plate is elastically connected to the inner side wall of the positioning groove through a first spring, and the other end of the transmission plate passes through the positioning plate and is connected to the outside;

[0006] A measuring mechanism is provided in the positioning plate, and the measuring mechanism includes a transmission rod rotatably connected to the bottom wall of the positioning groove, the outer wall of the transmission rod is fixedly connected to a gear, the side of the transmission plate close to the gear is fixedly connected to a rack, the outer wall of the transmission rod is fixedly connected to a ratchet, the inner bottom wall of the positioning groove is fixedly connected to a limit rod, the outer wall of the limit rod is slidably connected to a pawl, the outer wall of the limit rod is fixedly connected to a positioning ring, the top of the positioning ring is fixedly connected to a reset rod, the top of the reset rod passes through the positioning plate and is connected to the outside world. Through the setting of the measuring mechanism, the contact stroke can be measured after the high-voltage switch cabinet is closed, which is convenient for subsequent control of the insertion stroke of the moving and static contacts.

[0007] Preferably, a knob is fixedly connected to the outer wall of the positioning rod, and the outer wall of the knob is provided with anti-slip grooves. The setting of the knob can facilitate the application of force to the positioning rod.

[0008] Preferably, an auxiliary ring is slidably connected in the positioning groove, and the top of the auxiliary ring is elastically connected to the inner wall of the positioning groove through a second spring. Through the cooperation of the auxiliary ring and the second spring, it is convenient to apply pressure to the pawl to position it, and it is also convenient to automatically reset the pawl under the pressure of the second spring after pulling it.

[0009] Preferably, a buffer pad is provided at one end of the transmission plate away from the first spring, and a positioning hole is provided at one end of the transmission plate close to the first spring. A guide rod is slidably connected in the positioning hole, and the other end of the guide rod extends out of the positioning hole and is fixedly connected to the inner wall of the positioning groove. The setting of the guide rod facilitates positioning and guiding of the positioning plate.

[0010] Preferably, a handle is fixedly connected to the front of the circuit breaker trolley, and the outer wall of the handle is provided with anti-slip grooves. The arrangement of the handle can facilitate the pulling and moving of the circuit breaker trolley.

[0011] Preferably, guide blocks are fixedly connected to both sides of the circuit breaker trolley, and a guide groove is provided on a side of the guide block away from the circuit breaker trolley. The inner bottom wall of the guide groove is rotatably connected to a pulley via a rotating shaft. Through the cooperation of the guide block and the pulley, the circuit breaker trolley can be guided during the process of being moved into the high-voltage switch cabinet.

[0012] Preferably, the positioning plate is fixedly connected to the circuit breaker trolley by bolts, and the outer wall of the positioning plate is provided with anti-slip grooves. The positioning plate is fixedly connected to the circuit breaker trolley by bolts, so that the positioning plate can be easily disassembled and replaced.

[0013] Beneficial effects of the utility model:

[0014] 1. The utility model provides a contact stroke measuring device for a high-voltage switch cabinet. By setting a measuring mechanism, a circuit breaker trolley is pushed into the high-voltage switch, and one end of a transmission plate away from a first spring abuts against an inner wall of the high-voltage switch cabinet. The switch compartment power supply operating handle is turned to push the circuit breaker trolley to drive the circuit breaker thereon to move and approach the static contact, and the moving contact is inserted into the static contact. During this process, the transmission plate is pressed along with the movement of the circuit breaker trolley and injected into the locking positioning groove. The transmission plate applies pressure to the first spring until the moving contact is completely inserted into the static contact. At this time, the high-voltage switch cabinet can be opened, and the circuit breaker trolley is moved out of the high-voltage switch cabinet. A scale line is set on the transmission plate, and the stroke of the moving and static contacts docking can be obtained by observing the length of the transmission plate retracted into the positioning groove.

[0015] 2. The utility model provides a contact stroke measuring device for a high-voltage switch cabinet. Through the cooperation of an auxiliary ring and a second spring, it is convenient to apply pressure to a ratchet to position it, and it is also convenient to automatically reset the ratchet under the pressure of the second spring after pulling it. Through the cooperation of a guide block and a pulley, it is convenient to guide the circuit breaker trolley during the process of moving it into the high-voltage switch cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 It is a three-dimensional diagram of the positioning plate in the utility model;

[0019] Figure 3 This is one of the cross-sectional structural diagrams of the positioning plate in the utility model;

[0020] Figure 4 This is the second cross-sectional structural diagram of the positioning plate in the utility model.

[0021] Legend:

[0022] 1. Circuit breaker trolley; 2. Positioning plate; 3. Positioning groove; 4. Transmission plate; 5. First spring; 6. Measuring mechanism; 61. Transmission rod; 62. Reset rod; 63. Gear; 64. Rack; 65. Ratchet; 66. Paw; 67. Positioning ring; 7. Knob; 8. Auxiliary ring; 9. Guide rod; 10. Handle; 11. Guide block; 12. Pulley. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Specific examples are given below.

[0025] See also Figure 1-Figure 4The utility model provides a contact stroke measuring device for a high-voltage switch cabinet, comprising a circuit breaker trolley 1; a positioning plate 2 is fixedly connected to one side of the circuit breaker trolley 1, a positioning groove 3 is provided in the positioning plate 2, a transmission plate 4 is slidably connected in the positioning groove 3, one end of the transmission plate 4 is elastically connected to the inner side wall of the positioning groove 3 through a first spring 5, and the other end of the transmission plate 4 passes through the positioning plate 2 and is connected to the outside;

[0026] A measuring mechanism 6 is provided in the positioning plate 2, and the measuring mechanism 6 includes a transmission rod 61 rotatably connected to the inner bottom wall of the positioning groove 3, a gear 63 is fixedly connected to the outer wall of the transmission rod 61, a rack 64 is fixedly connected to the side of the transmission plate 4 close to the gear 63, a ratchet 65 is fixedly connected to the outer wall of the transmission rod 61, a limit rod is fixedly connected to the inner bottom wall of the positioning groove 3, a ratchet 66 is slidably connected to the outer wall of the limit rod, a positioning ring 67 is fixedly connected to the outer wall of the limit rod, and a reset ring 67 is fixedly connected to the top of the positioning ring 67 Rod 62, the top of the reset rod 62 penetrates the positioning plate 2 and is connected to the outside world; when working, through the setting of the measuring mechanism 6, the circuit breaker trolley 1 is moved to the high-voltage switch cabinet through the circuit breaker, and the box cover of the high-voltage switch cabinet is opened, and the circuit breaker trolley 1 is pushed into the high-voltage switch, and the reset rod 62 is pulled up at the same time, and the reset rod 62 drives the pawl 66 to move up through the positioning ring 67, so that the pawl 66 falls off and contacts with the ratchet 65, and the rotation limit of the gear 63 and the transmission rod 61 is released, and the transmission plate 4 and its upper The rack 64 partially pops out of the positioning groove 3 under the pressure of the first spring 5 until the end of the transmission plate 4 away from the first spring 5 abuts against the inner wall of the high-voltage switch cabinet. At this time, the reset rod 62 is pressed to drive the pawl 66 to reset, and the pawl 66 is meshed with the ratchet 65 to rotate the gear 63 and the transmission rod 61, so that the gear 63 and the transmission rod 61 can only rotate in one direction, that is, the transmission plate 4 can only move toward the direction of the first spring 5, and the switch compartment power supply operating handle can be rotated to push the circuit breaker handcart belt The circuit breaker on it moves and approaches the static contact, and the dynamic contact is inserted into the static contact. In this process, the transmission plate 4 is pressurized along with the movement of the circuit breaker trolley 1 and injected into the locking positioning groove 3. The transmission plate 4 applies pressure to the first spring 5 until the dynamic contact is completely inserted into the static contact. At this time, the high-voltage switch cabinet can be opened and the circuit breaker trolley 1 can be moved out of the high-voltage switch cabinet. There are scale lines on the transmission plate 4, and the stroke of the dynamic and static contacts docking can be obtained by observing the length of the transmission plate 4 retracted into the positioning groove 3.

[0027] Further, such as Figure 2 and Figure 3 As shown, the outer wall of the reset rod 62 is fixedly connected with a knob 7, and the outer wall of the knob 7 is provided with anti-slip grooves. During operation, the setting of the knob 7 can facilitate the application of force to the reset rod 62.

[0028] Further, such as Figure 3As shown, an auxiliary ring 8 is slidably connected in the positioning groove 3, and the top of the auxiliary ring 8 is elastically connected to the inner wall of the positioning groove 3 through the second spring. During operation, the cooperation between the auxiliary ring 8 and the second spring can facilitate the application of pressure on the pawl 66 to position it, and also facilitate the automatic reset of the pawl 66 under the pressure of the second spring after the pawl 66 is pulled.

[0029] Further, such as Figure 3 and Figure 4 As shown, a buffer pad is arranged at one end of the transmission plate 4 away from the first spring 5, and a positioning hole is opened at one end of the transmission plate 4 close to the first spring 5, in which a guide rod 9 is slidably connected, and the other end of the guide rod 9 extends out of the positioning hole and is fixedly connected to the inner wall of the positioning groove 3. During operation, the positioning plate 2 is conveniently positioned and guided by the setting of the guide rod 9.

[0030] Further, such as Figure 1 As shown, a handle 10 is fixedly connected to the front of the circuit breaker trolley 1, and an anti-slip pattern is arranged on the outer wall of the handle 10. During operation, the arrangement of the handle 10 can facilitate the pulling of the circuit breaker trolley 1 to move.

[0031] Further, such as Figure 1 As shown, guide blocks 11 are fixedly connected to both sides of the circuit breaker trolley 1, and a guide groove is provided on the side of the guide block 11 away from the circuit breaker trolley 1, and the inner bottom wall of the guide groove is rotatably connected to a pulley 12 through a rotating shaft. During operation, the cooperation between the guide block 11 and the pulley 12 can facilitate the guidance of the circuit breaker trolley 1 during the process of moving it into the high-voltage switch cabinet.

[0032] Further, such as Figure 1 As shown, the positioning plate 2 is fixedly connected to the circuit breaker trolley 1 by bolts, and the outer wall of the positioning plate 2 is provided with anti-slip grooves. During operation, the positioning plate 2 is fixedly connected to the circuit breaker trolley 1 by bolts, so that the positioning plate 2 can be easily disassembled and replaced.

[0033] Working principle: Move the circuit breaker trolley 1 to the high-voltage switch cabinet by pushing out the circuit breaker, open the cover of the high-voltage switch cabinet, push the circuit breaker trolley 1 into the high-voltage switch, and pull up the reset rod 62 at the same time. The reset rod 62 drives the pawl 66 to move up through the positioning ring 67, so that the pawl 66 falls off the contact with the ratchet 65, and the rotation limit of the gear 63 and the transmission rod 61 is released. The transmission plate 4 and the rack 64 thereon partially pop out of the positioning groove 3 under the pressure of the first spring 5 until the end of the transmission plate 4 away from the first spring 5 abuts against the inner wall of the high-voltage switch cabinet. At this time, pressing the reset rod 62 drives the pawl 66 to reset, and the pawl 66 is meshed with the ratchet 65 to engage the gear 63 and the transmission rod 61. The gear 63 and the transmission rod 61 can only rotate in one direction, that is, the transmission plate 4 can only move toward the direction of the first spring 5, and the power supply operating handle of the switch compartment can be rotated to push the circuit breaker trolley to drive the circuit breaker thereon to move and approach the static contact, and the moving contact is inserted into the static contact. In this process, the transmission plate 4 is pressurized along with the movement of the circuit breaker trolley 1 and injected into the locking positioning groove 3. The transmission plate 4 applies pressure to the first spring 5 until the moving contact is completely inserted into the static contact. At this time, the high-voltage switch cabinet can be opened and the circuit breaker trolley 1 can be moved out of the high-voltage switch cabinet. Scale lines are set on the transmission plate 4, and the stroke of the moving and static contacts docking can be obtained by observing the length of the transmission plate 4 retracted into the positioning groove 3.

[0034] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A contact stroke measuring device for a high-voltage switch cabinet, comprising a circuit breaker trolley (1); a positioning plate (2) is fixedly connected to one side of the circuit breaker trolley (1), a positioning groove (3) is provided in the positioning plate (2), a transmission plate (4) is slidably connected in the positioning groove (3), one end of the transmission plate (4) is elastically connected to the inner side wall of the positioning groove (3) through a first spring (5), and the other end of the transmission plate (4) passes through the positioning plate (2) and is connected to the outside, characterized in that ； A measuring mechanism (6) is provided in the positioning plate (2), and the measuring mechanism (6) comprises a transmission rod (61) rotatably connected to the inner bottom wall of the positioning groove (3); the outer wall of the transmission rod (61) is fixedly connected to a gear (63); a side of the transmission plate (4) close to the gear (63) is fixedly connected to a rack (64); the outer wall of the transmission rod (61) is fixedly connected to a ratchet (65); the inner bottom wall of the positioning groove (3) is fixedly connected to a limiting rod; the outer wall of the limiting rod is slidably connected to a ratchet (66); the outer wall of the limiting rod is fixedly connected to a positioning ring (67); the top of the positioning ring (67) is fixedly connected to a reset rod (62); the top end of the reset rod (62) passes through the positioning plate (2) and is connected to the outside.

2. A high-voltage switch cabinet contact stroke measuring device according to claim 1, characterized in that: The outer wall of the reset rod (62) is fixedly connected with a knob (7), and the outer wall of the knob (7) is provided with anti-slip grooves.

3. A high-voltage switch cabinet contact stroke measuring device according to claim 2, characterized in that: An auxiliary ring (8) is slidably connected inside the positioning groove (3), and the top end of the auxiliary ring (8) is elastically connected to the inner side wall of the positioning groove (3) via a second spring.

4. A high-voltage switch cabinet contact stroke measuring device according to claim 3, characterized in that: A buffer pad is provided at one end of the transmission plate (4) away from the first spring (5), and a positioning hole is provided at one end of the transmission plate (4) close to the first spring (5). A guide rod (9) is slidably connected in the positioning hole, and the other end of the guide rod (9) extends out of the positioning hole and is fixedly connected to the inner wall of the positioning groove (3).

5. A high-voltage switch cabinet contact stroke measuring device according to claim 4, characterized in that: A handle (10) is fixedly connected to the front of the circuit breaker trolley (1), and an outer wall of the handle (10) is provided with anti-slip grooves.

6. A high-voltage switch cabinet contact stroke measuring device according to claim 5, characterized in that: Guide blocks (11) are fixedly connected to both sides of the circuit breaker trolley (1); a guide groove is provided on a side of the guide block (11) away from the circuit breaker trolley (1); and a pulley (12) is rotatably connected to the inner bottom wall of the guide groove via a rotating shaft.

7. A high-voltage switch cabinet contact stroke measuring device according to claim 6, characterized in that: The positioning plate (2) is fixedly connected to the circuit breaker trolley (1) by means of bolts, and the outer wall of the positioning plate (2) is provided with anti-slip grooves.

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