CN215770930U

CN215770930U - Mechanical locking mechanism of mining explosion-proof and intrinsically safe electric cabinet

Info

Publication number: CN215770930U
Application number: CN202120986151.4U
Authority: CN
Inventors: 庄奎斌; 刘骏; 赵立奇
Original assignee: Shandong Tuoxin Electric Co ltd
Current assignee: Shandong Tuoxin Electric Co ltd
Priority date: 2021-05-10
Filing date: 2021-05-10
Publication date: 2022-02-08
Anticipated expiration: 2031-05-10

Abstract

The utility model belongs to the technical field of mechanical locking of electric cabinets, in particular to a mining explosion-proof and intrinsically safe mechanical locking mechanism of an electric cabinet, which comprises a first operating wrench, a second operating wrench, a first operating rod, a second locking limiting disc, a second operating rod, a first left door locking pin shaft, a push plate, a second right door limiting plate pin shaft and a first right door limiting plate pin shaft; one end of the first operating wrench is fixedly connected to the first operating rod, and the other end of the first operating wrench is exposed out of the left door surface of the electric cabinet; the other end of the first operating rod is rotatably connected to the left door surface; the first operating rod is perpendicular to the left door surface; the locking mechanism can achieve two switches, can realize the functions of closing a door, closing a door and locking the door, and not closing the door and supplying power when being used independently or simultaneously, and has the advantages of simple structure, convenient processing and high reliability.

Description

Mechanical locking mechanism of mining explosion-proof and intrinsically safe electric cabinet

Technical Field

The utility model relates to the technical field of mechanical locking of electric cabinets, in particular to a mechanical locking mechanism of a mining explosion-proof and intrinsically safe electric cabinet.

Background

The existing mining explosion-proof and intrinsically safe electric cabinet mostly adopts a single power switch (circuit breaker), and can not mechanically isolate and break a certain specific loop in multi-loop control, so that the reliability of equipment is reduced.

In order to solve the problems, the application provides a mechanical locking mechanism of a mining explosion-proof and intrinsically safe electric cabinet.

SUMMERY OF THE UTILITY MODEL

Therefore, how to solve the above defects of the existing mining explosion-proof and intrinsically safe electric cabinet becomes a problem to be solved urgently by technical personnel in the field.

In order to achieve the purpose, the utility model provides the following technical scheme: the mechanical locking mechanism of the mining explosion-proof and intrinsically safe electric cabinet is characterized in that:

the door locking mechanism comprises a first operating wrench, a second operating wrench, a first operating rod, a second locking limiting disc, a second operating rod, a first left door locking pin shaft, a push plate, a second right door limiting plate pin shaft and a first right door limiting plate pin shaft;

one end of the first operating wrench is fixedly connected to the first operating rod, and the other end of the first operating wrench is exposed out of the left door surface of the electric cabinet;

the other end of the first operating rod is rotatably connected to the left door surface; the first operating rod is perpendicular to the left door surface; the center of the first operating rod is fixedly connected to the center of the first locking limiting disc through a cam;

the first locking limiting disc is positioned on the inner wall of the left door face, is sheet-shaped, and is provided with a connecting hole in the center for connecting the first operating rod; the edge of the first locking limiting disc is in a smooth arc shape, and a sliding groove is formed in the edge of the first locking limiting disc and used for clockwise/anticlockwise rotating for degrees; the edge of the first left door locking pin shaft is also provided with a contact sliding surface which is used for contacting and sliding with the first left door locking pin shaft; the distance OA-OB between the contact sliding surface of the first locking limiting disc and the center of the first locking limiting disc is gradually reduced, and the contact sliding surface of the first locking limiting disc rotates along the right end of the first left door locking pin shaft and is used for locking and limiting;

a first locking spring is sleeved on the first left door locking pin shaft; the first left door locking pin shaft is perpendicular to the push plate; the push plate is also provided with a fixed shaft, and the middle part of the fixed shaft is sleeved with a fixed shaft spring;

an intermediate pin shaft is fixedly connected between the push plate and the first right door limiting plate pin shaft, and an intermediate pin shaft spring is sleeved in the middle of the intermediate pin shaft;

the first right door limiting plate pin shaft is welded on the right door surface; the right door limiting plate is movably connected to the right door surface; the right door limiting plate is positioned above the first right door limiting plate pin shaft;

the first operating wrench is positioned right above the second operating wrench;

one end of the second operating wrench is fixedly connected to the second operating rod, and the other end of the second operating wrench is exposed out of the left door surface of the electric cabinet;

the other end of the second operating rod is rotatably connected to the left door surface; the second operating rod is perpendicular to the left door surface; the center of the first operating rod is positioned at the center of the first locking limiting disc;

the second locking limiting disc is positioned on the inner wall of the left door face, and the structure of the second locking limiting disc is the same as that of the first locking limiting disc; the contact sliding surface of the second locking limiting disc rotates along the right end of the second left door locking pin shaft and is used for locking and limiting;

a second locking spring is sleeved on the second left door locking pin shaft; the second left door locking pin shaft is perpendicular to the push plate;

the second right door limiting plate pin shaft is welded on the right door surface; and the second right door limiting plate pin shaft is positioned right below the right door limiting plate and the first right door limiting plate pin shaft.

Furthermore, a groove is formed in the right end of the first left door locking pin shaft, and a contact sliding surface of the first locking limiting disc is located in the groove of the first left door locking pin shaft;

the right end of the second left door locking pin shaft is provided with a groove, and the contact sliding surface of the second locking limiting disc is located in the groove of the second left door locking pin shaft.

Furthermore, the first locking spring, the second locking spring, the dead axle spring and the middle pin shaft spring adopt compression springs.

Compared with the prior art, the utility model has the beneficial effects that: the locking mechanism can achieve two switches, can realize the functions of closing a door, closing a door and locking the door, and not closing the door and supplying power when being used independently or simultaneously, and has the advantages of simple structure, convenient processing and high reliability. The safety of the electric control equipment using the mechanism in use and maintenance can be improved.

Drawings

FIG. 1 is a schematic diagram of a mining explosion-proof and intrinsically safe electric cabinet in the prior art, wherein a single power switch is adopted;

FIG. 2 is an overall structure front view of the mechanical locking mechanism of the mining flameproof and intrinsically safe electric cabinet;

FIG. 3 is an overall structure sectional view of the mechanical locking mechanism of the mining flameproof and intrinsically safe electric cabinet;

FIG. 4 is a right cross-sectional view of the whole structure of the mechanical locking mechanism of the mining flameproof and intrinsically safe electric cabinet

Fig. 5 is a schematic structural diagram of a first locking limiting disc in the mechanical locking mechanism of the mining flameproof and intrinsically safe electric cabinet.

Wherein, 1 is a first operating wrench, 2 is a second operating wrench, 3 is a first locking limiting disc, O is the rotating circle center of the first locking limiting disc, 31 is a chute, 32 contacts with a sliding surface; 4 is a first operating lever, 5 is a second locking limiting disc, 6 is a second operating lever, 7 is a first left door locking pin, 8 is a second left door locking pin, 9 is a push plate, 10 is a middle pin, 11 is a fixed shaft, 12 is a second right door limiting plate pin, 13 is a first right door limiting plate pin, 14 is a right door limiting plate, 15 is a first locking spring, 16 is a second locking spring, 17 is a fixed shaft spring, 18 is a middle pin spring, 19 is a right door face, and 20 is a left door face; 21 is a single power switch.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, most of existing mining flameproof and intrinsically safe electric cabinets adopt a single power switch (circuit breaker), and cannot mechanically isolate and break a specific loop in multi-loop control, so that the reliability of equipment is reduced.

This embodiment provides a novel mining flame proof and intrinsically safe electric cabinet mechanical locking mechanism, as shown in fig. 2-4, this mining flame proof and intrinsically safe electric cabinet mechanical locking mechanism includes first operating wrench 1, second operating wrench 2, first action bars 4, second shutting limiting disc 5, second action bars 6, first left door shutting pin shaft 7, push pedal 9, second right door limiting plate pin shaft 12 and first right door limiting plate pin shaft 13.

One end of the first operating wrench 1 is fixedly connected to the first operating rod 4, and the other end of the first operating wrench 1 is exposed out of the left door surface 20 of the electric cabinet; the other end of the first operating rod 4 is rotatably connected to the left door surface 20; the first operating rod 4 is perpendicular to the left door face 20; the center of the first operating rod 4 is fixedly connected to the center of the first locking limiting disc 3 through a cam; the first locking limiting disc 3 is positioned on the inner wall of the left door surface 20, the first locking limiting disc 3 is sheet-shaped, and a connecting hole is formed in the center of the first locking limiting disc and used for rotating with the connected first operating rod 4; the edge of the first locking limiting disc 3 is in a smooth arc shape, and the edge of the first locking limiting disc is provided with a sliding groove 31 for clockwise/anticlockwise rotating for 90 degrees; the edge of the first left door locking pin shaft is also provided with a contact sliding surface 32 which is used for sliding in contact with the first left door locking pin shaft 7; the distance OA to OB between the contact sliding surface 32 of the first lock limiting disc 3 and the center of the first lock limiting disc 3 is gradually reduced, as shown in fig. 5, when the first lock limiting disc 3 rotates clockwise by 90 °, the distance between the sliding contact surface and the center of the circle, i.e. the distance from the center of the circle O to the position a to the position B is gradually reduced, and at this time, the first lock limiting disc 3 pushes the first left door lock pin shaft 7 to extend to the left; in contrast, when rotating 90 ° counterclockwise, the distance of the sliding contact surface from the center of the circle, i.e., the radius from OB to OA, is gradually increased, and the first left door latching pin shaft 7 moves rightward by the elastic force of the first latching spring 15. The contact sliding surface 32 of the first locking limiting disk 3 is thus pivoted along the right end of the first left-hand door locking pin shaft 7 for the purpose of locking limiting, the first locking limiting disk 3 and the first left-hand door locking pin shaft 7 essentially being a set of cam linkages. A first locking spring 15 is sleeved on the first left door locking pin shaft 7; the first left door locking pin 7 is perpendicular to the push plate 9; the push plate 9 is also provided with a fixed shaft 11, and the middle part of the fixed shaft 11 is sleeved with a fixed shaft spring 17; an intermediate pin shaft 10 is fixedly connected between the push plate 9 and the first right door limiting plate pin shaft 13, and an intermediate pin shaft spring 18 is sleeved in the middle of the intermediate pin shaft 10;

the first right door limiting plate pin shaft 13 is welded on the right door surface 19; the right door limiting plate 14 is movably connected to the right door surface; the right door limiting plate 14 is positioned above the first right door limiting plate pin shaft 13;

the first operating wrench 1 is positioned right above the second operating wrench 2;

one end of the second operating wrench 2 is fixedly connected to the second operating rod 6, and the other end of the second operating wrench 2 is exposed out of the left door surface 20 of the electric cabinet; the other end of the second operating rod 6 is rotatably connected to the left door surface 20; the second operating rod 6 is perpendicular to the left door face 20; the center of the first operating rod 4 is positioned at the center of the first locking limiting disc 3; the second locking limiting disc 5 is positioned on the inner wall of the left door surface 20, and the structure of the second locking limiting disc 5 is the same as that of the first locking limiting disc 3; the contact sliding surface of the second locking limiting disc 5 rotates along the right end of the second left door locking pin shaft 8 and is used for locking and limiting; the second locking limiting disc 5 and the second left door locking pin 8 are also a set of cam link mechanism in nature. The right end of the second left door locking pin shaft 8 is provided with a groove, and the edge of the second locking limiting disc 5 is located in the groove of the second left door locking pin shaft 8. A second locking spring 16 is sleeved on the second left door locking pin shaft 8; the second left door locking pin shaft 8 is perpendicular to the push plate 9; the second right door limiting plate pin shaft 12 is welded on the right door surface 19; and the second right-door limiting plate pin shaft 12 is positioned right below the right-door limiting plate 14 and the first right-door limiting plate pin shaft 13.

Wherein, the first locking spring 15, the second locking spring 16, the dead axle spring 17 and the middle pin shaft spring 18 adopt compression springs.

In the actual use process of the locking mechanism, the left door surface 20 is closed, the first operating wrench 1 is rotated clockwise by 90 degrees, then the first operating rod 4 rotates along with the first operating rod and enables the switch to be switched on and powered on, and meanwhile, the first locking limiting disc 3 also rotates along with the first locking limiting disc, the distance from the center of rotation of the first locking limiting disc 3 to the distance from OA to OB of the first left door locking pin shaft 7 is gradually increased along with the angular rotation of the first locking limiting disc 3, so that the first left door locking pin shaft 7 is pushed to extend leftwards, the first locking spring 15 is compressed, the push plate 9 is triggered, the middle pin shaft 10 is pushed to continue to move leftwards, and the fixed shaft spring 17 and the middle pin shaft spring 18 are compressed to pin the first right door locking plate pin shaft 13, so that the function of locking the door is realized. The first right door limiting plate pin shaft 13 is welded with the right door surface 19, and the first left door locking pin shaft 7 is pinned at the position of the middle flange due to the extending state.

Similarly, the second operating wrench 2 can be rotated to lock the door. When the second operating wrench 2 rotates 90 degrees clockwise, the second operating rod 6 rotates along with the second operating rod and enables the switch to be switched on and powered on, meanwhile, the second locking limiting disc 5 also rotates along with the second operating rod and pushes the second left door locking pin shaft 8 to extend leftwards, the second locking limiting disc 16 is compressed to trigger the push plate 9 and then push the middle pin shaft 10 to continue moving leftwards, and the fixed shaft spring 17 and the middle pin shaft spring 18 are compressed to pin the second right door locking plate pin shaft 12, so that the function of locking the door is achieved.

When the first operating wrench 1 rotates 90 degrees counterclockwise, the first operating rod 4 also rotates and switches off the switch, and simultaneously the first locking limiting disc 3 also rotates, and along with the change of the rotation angle of the first locking limiting disc 3, the distance between the center of the circle and the distance OB to OA between the center of the circle and the first left door locking pin shaft 7 gradually decreases along with the rotation angle of the first locking limiting disc 3, so that the first left door locking pin 7 moves rightwards under the action of the elastic force of the first locking spring 15, and meanwhile, the middle pin shaft 10 moves rightwards under the action of the fixed shaft spring 17 and the middle pin shaft spring 18 to push the push plate 9 to move rightwards and pull out from the first right door limiting plate pin shaft 13, thereby realizing the function of opening the door only after power failure.

When the right door surface 19 is not closed, the first right door limiting plate pin shaft 13 cannot push the right door limiting plate 14 open, and the right door limiting plate 14 naturally hangs down under the action of gravity, so that the middle pin shaft 10 cannot extend leftwards, and further the first operating wrench 1 or the second operating wrench 2 cannot be rotated, so that the function of switching on and powering on without closing a door is realized.

The locking mechanism can achieve two switches, can realize the functions of closing a door, locking the door and not closing the door and supplying power when being used independently or simultaneously, and has the advantages of simple structure, convenient processing and high reliability. The safety of the electric control equipment using the mechanism in use and maintenance can be improved.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The mechanical locking mechanism of the mining explosion-proof and intrinsically safe electric cabinet is characterized in that: the door locking mechanism comprises a first operating wrench (1), a second operating wrench (2), a first operating rod (4), a second locking limiting disc (5), a second operating rod (6), a first left door locking pin shaft (7), a push plate (9), a second right door limiting plate pin shaft (12) and a first right door limiting plate pin shaft (13); one end of the first operating wrench (1) is fixedly connected to the first operating rod (4), and the other end of the first operating wrench (1) is exposed out of a left door surface (20) of the electric cabinet; the other end of the first operating rod (4) is rotatably connected to the left door surface (20); the first operating rod (4) is perpendicular to the left door face (20); the center of the first operating rod (4) is fixedly connected to the center of the first locking limiting disc (3) through a cam; the first locking limiting disc (3) is positioned on the inner wall of the left door face (20), the first locking limiting disc (3) is sheet-shaped, and a connecting hole is formed in the center of the first locking limiting disc and used for being connected with the first operating rod (4); the edge of the first locking limiting disc (3) is in a smooth arc shape, and a sliding groove (31) is formed in the edge of the first locking limiting disc and used for rotating 90 degrees clockwise/anticlockwise; the edge of the first left door locking pin shaft is also provided with a contact sliding surface (32) which is used for sliding in contact with the first left door locking pin shaft (7); the central distance OA to OB between the contact sliding surface (32) of the first locking limiting disc (3) and the first locking limiting disc (3) is gradually reduced, and the contact sliding surface (32) of the first locking limiting disc (3) rotates along the right end of the first left door locking pin shaft (7) and is used for locking and limiting; a first locking spring (15) is sleeved on the first left door locking pin shaft (7); the first left door locking pin shaft (7) is vertical to the push plate (9); a fixed shaft (11) is further mounted on the push plate (9), and a fixed shaft spring (17) is sleeved in the middle of the fixed shaft (11); an intermediate pin shaft (10) is fixedly connected between the push plate (9) and the first right door limiting plate pin shaft (13), and an intermediate pin shaft spring (18) is sleeved in the middle of the intermediate pin shaft (10); the first right door limiting plate pin shaft (13) is welded on the right door surface (19); the right door limiting plate (14) is movably connected to the right door surface; the right door limiting plate (14) is positioned above the first right door limiting plate pin shaft (13); the first operating wrench (1) is positioned right above the second operating wrench (2); one end of the second operating wrench (2) is fixedly connected to the second operating rod (6), and the other end of the second operating wrench (2) is exposed out of the left door surface (20) of the electric cabinet; the other end of the second operating rod (6) is rotatably connected to the left door surface (20); the second operating rod (6) is perpendicular to the left door face (20); the center of the first operating rod (4) is positioned at the center of the first locking limiting disc (3); the second locking limiting disc (5) is positioned on the inner wall of the left door face (20), and the structure of the second locking limiting disc (5) is the same as that of the first locking limiting disc (3); the contact sliding surface of the second locking limiting disc (5) rotates along the right end of the second left door locking pin shaft (8) and is used for locking and limiting; a second locking spring (16) is sleeved on the second left door locking pin shaft (8); the second left door locking pin shaft (8) is vertical to the push plate (9); the second right door limiting plate pin shaft (12) is welded on the right door surface (19); and the second right door limiting plate pin shaft (12) is positioned right below the right door limiting plate (14) and the first right door limiting plate pin shaft (13).

2. The mechanical locking mechanism for the mining explosion-proof and intrinsically safe electric cabinet according to claim 1, characterized in that: a groove is formed in the right end of the first left door locking pin shaft (7), and a contact sliding surface of the first locking limiting disc (3) is located in the groove of the first left door locking pin shaft (7); the right end of the second left door locking pin shaft (8) is provided with a groove, and a contact sliding surface of the second locking limiting disc (5) is located in the groove of the second left door locking pin shaft (8).

3. The mechanical locking mechanism for the mining explosion-proof and intrinsically safe electric cabinet according to claim 2, characterized in that: the first locking spring (15), the second locking spring (16), the dead axle spring (17) and the middle pin shaft spring (18) are compression springs.