Isolation locking mechanism of mining flame-proof and intrinsically safe combined high-voltage vacuum power distribution device

Abstract

The utility model relates to an isolation locking mechanism of a mining explosion-proof and intrinsically safe combined high-voltage vacuum power distribution device, which comprises a connecting rod and a supporting seat hinged with the connecting rod and arranged on a front door, an inserting block penetrating through the connecting rod is arranged on the end face of a door lock rotating shaft of the front door, and a long hole matched with the inserting block and interfering with rotation of the inserting block is formed in the connecting rod. The front door is further connected with the connecting rod through a tension spring located between the rotating shaft and the supporting base, the connecting rod is further connected with an adjusting shaft extending towards the circuit breaker, and the adjusting shaft and the door lock rotating shaft are located on the two sides of the supporting base. When the scheme is used and maintenance is needed, the button is operated, the circuit breaker retreats to a test position, the circuit breaker moves towards the front door along with the electric chassis, and when the circuit breaker abuts against the adjusting shaft, the connecting rod is driven to rotate around the supporting seat, namely, the long hole is driven to rotate, so that the inserting block leaves the long hole, namely, constraint of the connecting rod to the door lock rotating shaft is relieved; therefore, the door lock rotating shaft can rotate, and safe maintenance of equipment is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of power distribution, in particular to the technical field of locking mechanisms of power distribution devices, and specifically refers to an isolation locking mechanism of a combined high-voltage vacuum power distribution device with explosion-proof and intrinsic safety for mining. Background Art

[0002] In the environment of explosive mixed gases such as methane and coal dust in coal mines and their surrounding media, the safety of the coal mine power supply system becomes more and more important.

[0003] The mining flameproof and intrinsically safe combined high-voltage vacuum distribution device plays an increasingly important role in the coal mine power supply system. The use environment determines that this type of equipment has a safe and reliable mechanism to ensure the safe operation of the equipment.

[0004] The existing equipment is provided with a circuit breaker that can move with the electric chassis vehicle. The circuit breaker is equipped with a conductive rod, which is connected to the plum blossom terminal installed on the shell. When connected, it is the working position of the equipment; when separated from the plum blossom terminal, it is the test position. Only when it is in the test position can the equipment be repaired, that is, when the equipment is working, it must be ensured that the circuit breaker is in an isolated state before the door can be opened for maintenance. However, the front door of the equipment can be opened manually in both the test position and the working position, so there is a safety hazard. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides an isolation locking mechanism for a flameproof and intrinsically safe combined high-voltage vacuum power distribution device for mining. When in the working position, the front door cannot be opened, and when in the test position, the restraint on the front door is contacted so that the front door can be opened, thereby ensuring that the front door is in the test position when opened, thereby ensuring safe maintenance of the equipment.

[0006] The utility model is realized through the following technical scheme: an isolation and locking mechanism of a combined explosion-proof and intrinsically safe high-voltage vacuum distribution device for mining, comprising a connecting rod located between a front door and a circuit breaker and extending radially along the moving direction of the circuit breaker, and a support seat to which the connecting rod is hinged and arranged on the front door, an insert block penetrating the connecting rod is provided on the end surface of the front door lock shaft, a long hole cooperating with the insert block and interfering with the rotation of the insert block is provided on the connecting rod, the front door is also connected to the connecting rod through a tension spring located between the shaft and the support seat, an adjusting shaft extending toward the circuit breaker is also connected to the connecting rod, and the adjusting shaft and the door lock shaft are located on both sides of the support seat.

[0007] When the present solution is in use, in the working position, the tension spring pulls the connecting rod so that the connecting rod is pushed onto the door lock shaft, and the insert block is inserted into the long hole. The long hole limits the rotation of the insert block, thereby causing the connecting rod to limit the rotation of the door lock shaft, thereby preventing the front door from being opened; when maintenance is required, the button is operated to retreat the circuit breaker to the test position. At this time, the circuit breaker is separated from the plum blossom terminal, the circuit breaker is in the open state, and the main circuit is in the open state. At this time, the circuit breaker moves toward the front door with the electric chassis vehicle. When the circuit breaker is pushed onto the adjusting shaft, it drives the connecting rod to rotate around the support seat, and the connecting rod stretches the tension spring. The rotation of the connecting rod drives the long hole to rotate, thereby causing the insert block to leave the long hole, that is, the restraint of the door lock shaft by the connecting rod is released, so that the door lock shaft can rotate, thereby opening the front door, thereby ensuring safe maintenance of the equipment.

[0008] Preferably, a roller which is pressed against the circuit breaker is hingedly connected to one end of the adjusting shaft close to the circuit breaker, and the circumferential surface of the roller presses against the circuit breaker.

[0009] In this preferred solution, the roller is arranged so that the roller rolls on the circuit breaker, thereby reducing the friction on the circuit breaker, thereby playing a role in protecting the circuit breaker.

[0010] Preferably, the other end of the adjusting shaft is fixedly connected with a screw rod which is threadedly connected in the connecting rod. The arrangement of this preferred solution facilitates the adjustment of the extended length of the adjusting shaft.

[0011] Preferably, the screw rod is also threadedly connected with a nut. This preferred solution enhances the connection strength and prevents the screw rod and the connecting rod from loosening by setting the bolts.

[0012] Preferably, the screw rod is threadedly connected to a slider parallel to the adjustment shaft, one end of the slider away from the screw rod is fixed to a connecting rod, and the angle between the slider and the connecting rod is an obtuse angle.

[0013] In this preferred solution, the slider is provided to facilitate the rotation of the screw rod to adjust the length of the adjustment shaft.

[0014] Preferably, a U-shaped through groove is provided on the end surface of the support seat away from the front door, and a hinge shaft passing through the connecting rod is fixed in the through groove.

[0015] This preferred solution facilitates the articulation of the support seat and the connecting rod by providing the through groove and the articulation shaft.

[0016] The beneficial effects of the utility model are as follows: in the working position, the tension spring pulls the connecting rod so that the connecting rod is pushed onto the door lock shaft, and the insert block is inserted into the long hole. The long hole limits the rotation of the insert block, thereby causing the connecting rod to limit the rotation of the door lock shaft, thereby making it impossible to open the front door; when maintenance is required, the button is operated to make the circuit breaker retreat to the test position. At this time, the circuit breaker is separated from the plum blossom terminal, the circuit breaker is in an open state, and the main circuit is in an open state. At this time, the circuit breaker moves toward the front door with the electric chassis vehicle. When the circuit breaker is pushed onto the adjusting shaft, it drives the connecting rod to rotate around the supporting seat, and the connecting rod stretches the tension spring. The rotation of the connecting rod drives the long hole to rotate, thereby causing the insert block to leave the long hole, namely, releasing the restraint of the door lock shaft by the connecting rod, thereby allowing the door lock shaft to rotate, thereby opening the front door, thereby ensuring safe maintenance of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0018] Figure 2 It is a schematic top view of the structure of the utility model;

[0019] Figure 3 for Figure 2 The enlarged schematic diagram at A in the middle;

[0020] Figure 4 It is a rear view schematic diagram of the plug block;

[0021] As shown in the figure:

[0022] 1. Circuit breaker, 2. Roller, 3. Adjustment shaft, 4. Connecting rod, 5. Tension spring, 6. Door lock shaft, 7. Handle, 8. Support seat, 9. Front door, 10. Nut, 11. Screw rod, 12. Insert block, 13. Long hole. DETAILED DESCRIPTION

[0023] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0024] See attached Figure 1-4 The utility model discloses an isolation locking mechanism for a combined explosion-proof and intrinsically safe high-voltage vacuum power distribution device for mining, comprising a connecting rod 4 located between a front door and a circuit breaker 1 and extending radially along the moving direction of the circuit breaker 1, and a support seat 8 to which the connecting rod 4 is hinged and arranged on the front door. The front door and the circuit breaker 1 are arranged longitudinally, and the circuit breaker 1 moves longitudinally toward the front door, the connecting rod 4 extends transversely, and the support seat 8 extends longitudinally. A U-shaped through groove is provided on the end surface of the support seat 8 away from the front door, and a hinge shaft passing through the connecting rod 4 is fixedly connected in the through groove. After the connecting rod 4 passes through the through groove in the transverse direction, a hinge shaft passing through the connecting rod 4 is inserted in the through groove, that is, the connecting rod 4 is hinged on the support seat 8, and the hinge shaft extends in the height direction.

[0025] A door lock is arranged on the front door, and one end of the door lock shaft 6 extends into the device. An insert block 12 penetrating the connecting rod 4 is arranged on the end surface of the door lock shaft 6 located in the device. A long hole 13 for inserting the insert block 12 is opened on the connecting rod 4. The length of the long hole 13 is greater than the length of the insert block 12, and the width of the long hole 13 is less than the length of the insert block 12. When the insert block 12 rotates, the long hole 13 limits the rotation of the insert block 12, thereby interfering with the rotation of the insert block 12. The other end of the door lock is bolted to a handle 7 located outside the device.

[0026] A longitudinally extending tension spring 5 is also provided between the door lock shaft 6 and the support seat 8. The tension spring 5 is located between the front door and the connecting rod 4. The two ends of the tension spring 5 are connected to the front door and the connecting rod 4 respectively.

[0027] The connecting rod 4 is also connected to an adjusting shaft 3 extending toward the circuit breaker 1 . The adjusting shaft 3 and the door lock rotating shaft 6 are located on both sides of the supporting seat 8 .

[0028] The end of the adjusting shaft 3 close to the circuit breaker 1 is hinged with a roller 2 which is pressed against the circuit breaker 1, and the circumferential surface of the roller 2 is pressed against the circuit breaker 1. The other end of the adjusting shaft 3 is fixedly connected with a screw rod 11 which is threadedly connected to a slider. The slider is arranged parallel to the adjusting shaft 3, and the end of the slider away from the screw rod 11 is fixedly connected to the connecting rod 4. The angle between the slider and the connecting rod 4 is an obtuse angle, and a nut 10 is also threadedly connected to the screw rod 11.

[0029] In particular, see the attached Figure 2 The horizontal direction is the transverse direction, the vertical direction is the longitudinal direction, and the direction perpendicular to both the transverse direction and the longitudinal direction is the height direction.

[0030] When the utility model is in use, in the working position, the tension spring 5 pulls the connecting rod 4, so that the connecting rod 4 is pushed onto the door lock shaft 6, and the plug block 12 is inserted into the long hole 13, and the long hole 13 limits the rotation of the plug block 12, so that the connecting rod 4 limits the rotation of the door lock shaft 6, so that the front door cannot be opened; when maintenance is required, the button is operated to make the circuit breaker 1 retreat to the test position. At this time, the circuit breaker 1 is separated from the plum blossom terminal, the circuit breaker 1 is in the open state, and the main circuit is in the open state. At this time, the circuit breaker 1 moves towards the front door with the electric chassis vehicle. When When the circuit breaker 1 is pushed onto the adjusting shaft 3, the connecting rod 4 is driven to rotate clockwise around the supporting seat 8 through the adjusting shaft 3, and the other end of the connecting rod 4 is rotated away from the front door. At this time, the connecting rod 4 stretches the tension spring 5, and the rotation of the connecting rod 4 drives the long hole 13 to rotate away from the front door, so that the plug block 12 leaves the long hole 13, that is, the restraint of the door lock shaft 6 by the connecting rod 4 is released, so that the door lock shaft 6 can rotate, so that the staff can turn the handle 7 on the front door to open the front door, thereby ensuring the safe maintenance of the equipment.

[0031] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved by or by adopting the existing technology, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not deviate from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. An isolation and locking mechanism for a combined explosion-proof and intrinsically safe high-voltage vacuum power distribution device for mining, characterized in that: The invention comprises a connecting rod (4) located between the front door and the circuit breaker (1) and extending radially along the moving direction of the circuit breaker (1), and a support seat (8) hinged to the connecting rod (4) and arranged on the front door, an insert block (12) penetrating the connecting rod (4) is arranged on the end surface of the front door lock shaft (6), and a long hole (13) cooperating with the insert block (12) and interfering with the rotation of the insert block (12) is opened on the connecting rod (4), the front door is also connected to the connecting rod (4) through a tension spring (5) located between the shaft and the support seat (8), and the connecting rod (4) is also connected to an adjustment shaft (3) extending toward the circuit breaker (1), and the adjustment shaft (3) and the door lock shaft (6) are located on both sides of the support seat (8).

2. The isolation and locking mechanism of the explosion-proof and intrinsically safe combined high-voltage vacuum power distribution device for mining according to claim 1 is characterized in that: One end of the adjustment shaft (3) close to the circuit breaker (1) is hingedly connected to a roller (2) that is pressed against the circuit breaker (1), and the circumferential surface of the roller (2) is pressed against the circuit breaker (1).

3. The isolation and locking mechanism of the explosion-proof and intrinsically safe combined high-voltage vacuum power distribution device for mining use according to claim 2 is characterized in that: The other end of the adjusting shaft (3) is fixedly connected with a screw rod (11) which is threadedly connected in the connecting rod (4).

4. The isolation and locking mechanism of the explosion-proof and intrinsically safe combined high-voltage vacuum power distribution device for mining use according to claim 3 is characterized in that: The screw rod (11) is also threadedly connected with a nut (10).

5. The isolation and locking mechanism of the explosion-proof and intrinsically safe combined high-voltage vacuum power distribution device for mining use according to claim 4 is characterized in that: The screw rod (11) is threadedly connected to a slider parallel to the adjustment shaft (3); one end of the slider away from the screw rod (11) is fixedly connected to the connecting rod (4); and the angle between the slider and the connecting rod (4) is an obtuse angle.

6. The isolation and locking mechanism of the explosion-proof and intrinsically safe combined high-voltage vacuum power distribution device for mining use according to claim 1 is characterized in that: A U-shaped through groove is provided on the end surface of the support seat (8) away from the front door, and a hinge shaft passing through the connecting rod (4) is fixedly connected in the through groove.

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