CN210628747U

CN210628747U - Control mechanism of low-voltage control cabinet switch

Info

Publication number: CN210628747U
Application number: CN201921281707.9U
Authority: CN
Inventors: 刘伟; 向群; 张繁; 罗立荣; 王波
Original assignee: Hubei Edian Deli Electrical Co ltd
Current assignee: Hubei Edian Deli Electrical Co ltd
Priority date: 2019-08-09
Filing date: 2019-08-09
Publication date: 2020-05-26
Anticipated expiration: 2029-08-09

Abstract

The utility model discloses a control mechanism of low-voltage control cabinet switch, casing fixed mounting is internal at the cabinet, second uide bushing fixed mounting is internal at the cabinet, the axis is rotationally movable mounting in the casing, is provided with gear and worm wheel in the axis the both ends of worm are provided with the pivot respectively, and the worm passes through the pivot and rotationally movable mounting in the casing, and this worm meshes with the worm wheel mutually, and the pivot of a worm tip is worn out in the casing to the activity is worn to put in the second uide bushing, is located to be provided with the knob head on the outer worm tip of casing, mated first uide bushing fixed mounting is on the casing, rack activity is worn to put in mated first uide bushing to the activity is worn to put in the casing, and this rack meshes with the gear mutually, the utility model discloses the advantage is: the control mechanism has the advantages of simple structure, convenient and fast operation, low manufacturing cost and very convenient installation and maintenance.

Description

Control mechanism of low-voltage control cabinet switch

Technical Field

The utility model relates to a low-voltage switchgear's technical field, more specifically say so and relate to low-voltage switchgear safety protection mechanism's technical field.

Background

The low-voltage switch cabinet is widely applied to power users of power plants, transformer substations, plant and mining enterprises and the like, and is used for opening, closing, controlling and protecting power utilization equipment in the process of power generation, power transmission, power distribution and electric energy conversion of a power system. The low-voltage switch cabinet can be divided into a fixed switch cabinet and a draw-out switch cabinet in the structural mode, and the fixed low-voltage switch cabinet generally comprises a cabinet body, a cabinet door movably mounted on the cabinet body and electrical equipment mounted in the cabinet body. Generally install low-voltage circuit breaker in the fixed low-voltage switchgear, and present common fixed low-voltage switchgear generally does not set up low-voltage circuit breaker's safety device, and low-voltage circuit breaker in the low-voltage switchgear can only close a floodgate or the separating brake operation at the internal cabinet, and to non professional, close a floodgate or the separating brake operation very danger to low-voltage circuit breaker in the cabinet is internal, probably leads to non professional to take place unexpected electric shock accident, has the potential safety hazard.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the above-mentioned not enough and providing a simple structure, barrier propterty is good, can effectively avoid unexpected electric shock accident to take place, the control mechanism of low-voltage control cabinet switch that the potential safety hazard is low.

The utility model discloses a solve above-mentioned technical problem and the technical solution who adopts as follows:

the control mechanism of the low-voltage control cabinet switch comprises a cabinet body, a cabinet door and a low-voltage circuit breaker, wherein the front part of the cabinet body is in an open shape, the cabinet door is movably hinged at the open position at the front part of the cabinet body, the low-voltage circuit breaker is fixedly arranged in the cabinet body, the control mechanism further comprises a shell, a worm, a middle shaft, a rack, a locking bolt, a locking nut, a connecting plate, a first spring, a second spring, a locking rod, a guide rod, a paired first guide sleeve, a second guide sleeve and a cover plate, the shell is fixedly arranged in the cabinet body, the second guide sleeve is fixedly arranged in the cabinet body, the middle shaft is rotatably and movably arranged in the shell, a gear and a worm wheel are arranged on the middle shaft, pivots are respectively arranged at two end parts of the worm, the worm is rotatably and movably arranged in the shell through the pivots, the worm, the first spring is sleeved on the lock rod, the step faces of the first spring are respectively abutted against the lock block and the first step hole, the second spring is sleeved on the guide rod, two end parts of the second spring are respectively abutted against the step surfaces of the limiting plate and the second step hole, the other end part of the rack is movably inserted into the first through hole, the connecting plate is movably clamped in the limiting groove and fixedly connected with the locking rod and the guide rod, the cabinet door is provided with a housing, the knob head is positioned in the housing, the cover plate is movably hinged on the housing, the locking bolt is rotatably and movably arranged on the cover plate through a rotating shaft, the housing is provided with a lock seat, the lock seat is provided with a lock groove, the locking bolt is clamped in the lock groove, the locking nut is rotatably arranged on the locking bolt and pressed on the lock seat, the cabinet door is provided with a locking pin, the locking pin is provided with an annular groove, the locking pin is clamped in the second through hole, and the locking block is clamped in the annular groove.

The cabinet door is movably hinged to an opening at the front part of the cabinet body through a first hinge, and the cover plate is movably hinged to the housing through a second hinge.

The casing passes through first branch fixed mounting internal at the cabinet, first uide bushing in pairs passes through second branch fixed mounting on the casing, the second uide bushing passes through third branch fixed mounting internal at the cabinet.

The utility model adopts the beneficial effect that above-mentioned technical solution can reach is: when the cabinet door needs to be opened, the locking nut is firstly unscrewed, the cover plate is opened, then the knob head is rotated, the worm drives the worm wheel and the gear to rotate, the gear drives the rack to move downwards, the shifting fork shifts a switch handle of the low-voltage circuit breaker to switch off the low-voltage circuit breaker, and simultaneously, in the process of downward movement of the rack, the lower end part of the lock rod downwards pushes the connecting plate, the lock rod is driven by the connecting plate to move, the lock block is withdrawn from the annular groove of the lock pin and withdrawn into the first step hole, the lock on the cabinet door is released, then the cabinet door can be opened, so that the cabinet door can be opened only when the low-voltage circuit breaker is disconnected, thereby realizing good safety protection function, effectively avoiding the occurrence of accidental electric shock accidents, the control mechanism has the advantages of simple structure, convenient and quick operation, low manufacturing cost and very convenient installation and maintenance.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a partially enlarged schematic view of a portion B in fig. 1.

Detailed Description

As shown in fig. 1, the control mechanism of the low-voltage control cabinet switch comprises a cabinet body 1, a cabinet door 2 and a low-voltage circuit breaker 3, wherein the front part of the cabinet body 1 is open, the cabinet door 2 is movably hinged at the open part of the front part of the cabinet body 1 through a first hinge 4, the low-voltage circuit breaker 3 is fixedly installed in the cabinet body 1, the control mechanism further comprises a shell 5, a worm 6, a middle shaft 7, a rack 8, a locking bolt 9, a locking nut 10, a connecting plate 11, a first spring 12, a second spring 13, a locking rod 14, a guide rod 15, a pair of first guide sleeves 16, a second guide sleeve 17 and a cover plate 18, as shown in fig. 3, the shell 5 is fixedly installed in the cabinet body 1 through a first supporting rod 19, the second guide sleeve 17 is fixedly installed in the cabinet body 1 through a third supporting rod 20, the middle shaft 7 is rotatably and movably installed in the shell 5, a gear 21 and a, pivot shafts 23 are respectively arranged at two ends of the worm 6, the worm 6 is rotatably and movably arranged in the shell 5 through the pivot shafts 23, the worm 6 is meshed with a worm wheel 22, the pivot shaft 23 at one end of the worm 6 penetrates out of the shell 5 and movably penetrates in the second guide sleeve 17, a rotary head 24 is arranged at the end of the worm 6 positioned outside the shell 5, the paired first guide sleeves 16 are fixedly arranged on the shell 5 through a second support rod 25, the rack 8 is movably penetrated in the paired first guide sleeves 16 and movably penetrates in the shell 5, the rack 8 is meshed with the gear 21, a shifting fork 26 is arranged at one end of the rack 8, the shifting fork 26 is clamped at a switch handle 27 of the low-voltage circuit breaker 3, a limit groove 28 and a first stepped hole 29, a second stepped hole 30 and a first through hole 31 which are communicated with the limit groove 28 are respectively arranged on the inner side wall of the cabinet body 1, the cabinet body 1 is further provided with a second through hole 32 communicated with the first stepped hole 29, the lock rod 14 and the guide rod 15 are movably clamped in the first stepped hole 29 and the second stepped hole 30 respectively, the lock rod 14 is provided with a wedge-shaped lock block 33, the guide rod 15 is provided with a limit plate 34, the first spring 12 is sleeved on the lock rod 14, two end portions of the first spring 12 are abutted against the stepped surfaces of the lock block 33 and the first stepped hole 29 respectively, the second spring 13 is sleeved on the guide rod 15, two end portions of the second spring 13 are abutted against the stepped surfaces of the limit plate 34 and the second stepped hole 30 respectively, the other end portion of the rack 8 is movably inserted into the first through hole 31, the connecting plate 11 is movably clamped in the limit groove 28, and the connecting plate 11 is fixedly connected with the lock rod 14 and the guide rod 15. As shown in fig. 2, a housing 35 is disposed on the cabinet door 2, the knob head 24 is located in the housing 35, the cover plate 18 is movably hinged to the housing 35 through a second hinge 36, the locking bolt 9 is rotatably and movably mounted on the cover plate 18 through a rotating shaft 37, a lock seat 38 is disposed on the housing 35, a lock groove 39 is formed on the lock seat 38, the locking bolt 9 is locked in the lock groove 39, the locking nut 10 is rotatably disposed on the locking bolt 9 and pressed against the lock seat 38, a lock pin 40 is disposed on the cabinet door 2, an annular groove 41 is formed on the lock pin 40, the lock pin 40 is locked in the second through hole 32, and the lock block 33 is locked in the annular groove 41.

The working principle of the control mechanism of the low-voltage control cabinet switch is as follows: when the cabinet door 2 needs to be opened, the locking nut 10 is firstly unscrewed, the cover plate 18 is opened, then the rotary knob head 24 is rotated, the worm gear 22 and the gear 21 are driven to rotate through the worm 6, the gear 21 drives the rack 8 to move downwards, the switch handle 27 of the low-voltage circuit breaker 3 is shifted through the shifting fork 26, the low-voltage circuit breaker 3 is disconnected, meanwhile, in the downward movement process of the rack 8, the lower end part of the rack 8 downwards presses the connecting plate 11, the connecting plate 11 drives the locking rod 14 to move downwards, the locking block 33 is led out of the annular groove 41 of the locking pin 40 and led into the first step hole 29, the locking of the cabinet door 2 is released, and then the cabinet door 2 can be opened.

Claims

1. Control mechanism of low-voltage control cabinet switch, it is including the cabinet body, cabinet door and low-voltage circuit breaker, the front portion of the cabinet body is uncovered form, the cabinet door activity is articulated installs in the anterior uncovered department of the cabinet body, low-voltage circuit breaker fixed mounting is internal at the cabinet, its characterized in that: the multifunctional cabinet also comprises a shell, a worm, a middle shaft, a rack, a locking bolt, a locking nut, a connecting plate, a first spring, a second spring, a locking rod, a guide rod, a pair of first guide sleeves, a pair of second guide sleeves and a cover plate, wherein the shell is fixedly arranged in the cabinet, the second guide sleeves are fixedly arranged in the cabinet, the middle shaft is rotatably and movably arranged in the shell, a gear and a worm wheel are arranged on the middle shaft, pivot shafts are respectively arranged at two ends of the worm, the worm is rotatably and movably arranged in the shell through the pivot shafts, the worm is meshed with the worm wheel, the pivot shaft at one end of the worm penetrates out of the shell and is movably arranged in the second guide sleeve, a knob head is arranged at the end of the worm outside the shell, the pair of first guide sleeves are fixedly arranged on the shell, the rack is movably arranged in the pair of first guide sleeves and is movably arranged in the shell, the rack is engaged with the gear, a shifting fork is arranged at one end part of the rack and is clamped at a switch handle of the low-voltage circuit breaker, a limit groove, a first step hole, a second step hole and a first through hole which are communicated with the limit groove are respectively arranged on the inner side wall of the cabinet body, a second through hole which is communicated with the first step hole is also arranged on the cabinet body, the lock rod and the guide rod are respectively and movably clamped in the first step hole and the second step hole, a wedge-shaped lock block is arranged on the lock rod, a limit plate is arranged on the guide rod, the first spring is sleeved on the lock rod, two end parts of the first spring are respectively abutted against the lock block and the step surface of the first step hole, the second spring is sleeved on the guide rod, two end parts of the second spring are respectively abutted against the limit plate and the step surface of the second step hole, the other end part of the rack is movably inserted in the first through hole, the connecting plate is movably clamped in the limiting groove, the connecting plate is fixedly connected with the lock rod and the guide rod, a housing is arranged on the cabinet door, the knob head is located in the housing, the cover plate is movably hinged to the housing and mounted on the housing, the locking bolt is rotatably and movably mounted on the cover plate through a rotating shaft, a lock seat is arranged on the housing, a lock groove is formed in the lock seat, the locking bolt is clamped in the lock groove, the locking nut is rotatably arranged on the locking bolt and pressed on the lock seat, a locking pin is arranged on the cabinet door, an annular groove is formed in the locking pin, the locking pin is clamped in the second through hole, and the locking block is clamped in the annular groove.

2. The control mechanism of the low voltage control cabinet switch according to claim 1, characterized in that: the cabinet door is movably hinged to an opening at the front part of the cabinet body through a first hinge, and the cover plate is movably hinged to the housing through a second hinge.

3. The control mechanism of the low-voltage control cabinet switch according to claim 1 or 2, characterized in that: the casing passes through first branch fixed mounting internal at the cabinet, first uide bushing in pairs passes through second branch fixed mounting on the casing, the second uide bushing passes through third branch fixed mounting internal at the cabinet.