Multifunctional propelling mechanism of mining high-voltage switch assembly handcart

Abstract

An electric chassis truck assembly structurally comprises a shell, a flange is installed at one end of the shell, a connecting block is arranged in the middle of the flange, a micro motor is fixed in the shell, and the output end of the micro motor is connected with a lead screw through a chain transmission mechanism. The head of the lead screw extends out of the shell and is fixed below the circuit breaker through a nut; a connecting nozzle is fixed to the connecting block, and a through hole is formed in the middle of the connecting block and connected to the tail of the lead screw. An opening is formed in the shell, a shaft sleeve is fixed to the opening, an isolation rotating shaft is installed in the shaft sleeve in a penetrating mode and sleeved with a compressed spring, one end of the isolation rotating shaft is located outside the shell, a crank is arranged on the isolation rotating shaft, and a shaft pin is installed at the other end of the isolation rotating shaft after the other end of the isolation rotating shaft penetrates out of the shaft sleeve. And the shaft pin is matched with the connecting nozzle, operation is convenient and reliable, action is sensitive, and the safety coefficient is high.

Description

Technical Field

[0001] The utility model relates to the technical field of propulsion mechanisms, in particular to a multifunctional propulsion mechanism for a mining high-voltage switch assembly trolley. Background Art

[0002] The explosion-proof and intrinsically safe high-voltage vacuum distribution device for mining (hereinafter referred to as the high-explosive switch) is an essential switchgear for underground coal mine power supply. It typically includes primary equipment (voltage transformer (PT), current transformer (CT), zero-sequence current transformer), protectors, and circuit breakers. The circuit breaker includes a closing circuit, a closing actuator, an opening circuit, an opening actuator, a pressure-free release tripping circuit, a tripping actuator, and a circuit breaker trolley. The high-explosive switch is used to interrupt and restore power to power supply equipment. If a fault such as leakage or short circuit occurs on the load side of the power-consuming equipment, the protector in the high-explosive switch detects the fault and issues a fault trip command, causing the switch to trip and eliminate the fault.

[0003] Most of the original explosion-proof switches use a connecting rod mechanism to switch the circuit breaker trolley between the working position and the test position. There is no electric conversion, which has certain limitations on the automation transformation and upgrading of mining equipment and unmanned substations, and cannot meet the current use requirements of mining equipment. Utility Model Content

[0004] In response to the shortcomings of the above-mentioned existing production technology, the applicant provides a rationally structured multifunctional propulsion mechanism for a mining high-voltage switch assembly trolley, which can automatically complete the conversion between the working position and the test position of the circuit breaker trolley. At the same time, it is equipped with a manual function, which is flexible and reliable in operation and meets the requirements of use.

[0005] The technical solutions adopted in this utility model are as follows:

[0006] A multifunctional propulsion mechanism for a mining high-voltage switch assembly trolley comprises a housing, a circuit breaker is installed inside the housing, and an electric chassis assembly is installed below the circuit breaker;

[0007] The structure of the electric chassis assembly is as follows: it includes a housing, a flange mounted on one end of the housing, a connecting block provided in the middle of the flange, a micro motor fixed inside the housing, the output end of the micro motor connected to a screw through a chain drive mechanism, the head of the screw extending out of the housing and fixed to the bottom of the circuit breaker by a nut, that is, the rotation of the screw enables the movement of the circuit breaker; a coupling nozzle is fixed to the connecting block, and a through hole is provided in the middle of the connecting block, which is connected to the tail of the screw;

[0008] It also includes a trolley manual propulsion shaft assembly, and the structure of the trolley manual propulsion shaft assembly is: an opening is provided on the outer shell, a shaft sleeve is fixed at the opening, an isolation shaft is installed through the inside of the shaft sleeve, and at the same time, a compression spring is sleeved on the isolation shaft, one end of the isolation shaft is outside the outer shell, and a crank is provided on the isolation shaft, and the other end of the isolation shaft is passed through the shaft sleeve and an axle pin is installed, and the axle pin matches the connecting mouth.

[0009] As a further improvement of the above technical solution:

[0010] When the shaft pin is connected to the coupling nozzle, it is in manual state.

[0011] When the shaft pin is separated from the connecting nozzle, it is in the automatic state.

[0012] The exterior of the housing is locked to the bottom of the circuit breaker via fasteners.

[0013] The central axes of the isolation rotating shaft, the connecting nozzle, the connecting block and the screw rod are located in the same plane.

[0014] The connecting nozzle is an integrated structure.

[0015] One end of the coupling mouth is provided with an elliptical opening which matches the shaft pin, and the other end of the coupling mouth is provided with a connecting section which is fixed to the connecting block.

[0016] The isolation shaft and the shaft sleeve are both integral structures.

[0017] A boss is provided on the isolation rotating shaft.

[0018] A micro switch is installed on the shell above the connecting mouth.

[0019] The beneficial effects of the utility model are as follows:

[0020] The utility model has a compact and reasonable structure and is easy to operate. Through the mutual cooperation between the connecting nozzle, the trolley manual propulsion shaft assembly, the micro switch, the electric chassis vehicle assembly and other components, the conversion between the circuit breaker trolley working position and the test position can be conveniently realized. It can be completed by electric automatic remote control or by manual operation using a crank handle. The overall operation is sensitive and the operation is simple, which brings great convenience to mine explosion-proof work. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural diagram of the utility model (electric working state).

[0022] Figure 2 for Figure 1 A partial enlarged view of part A in the middle.

[0023] Figure 3This is a structural diagram of the present utility model (the upper part is the electric working state, and the lower part is the manual working state).

[0024] Figure 4 for Figure 3 A partial enlarged view of part B in the middle.

[0025] Figure 5 This is a cross-sectional view of the manual propulsion shaft assembly of the trolley of the present invention.

[0026] Figure 6 It is a structural schematic diagram of the connecting nozzle of the utility model.

[0027] Figure 7 This is a structural diagram of the electric chassis vehicle assembly of the utility model.

[0028] Including: 1. Connecting nozzle; 2. Manual propulsion shaft assembly of trolley; 3. Micro switch; 4. Electric chassis assembly; 5. Circuit breaker; 6. Housing; 7. Crank handle;

[0029] 101, elliptical opening;

[0030] 201, isolation shaft; 202, shaft sleeve; 203, compression spring; 204, shaft pin;

[0031] 401. Flange; 402. Connecting block; 403. Micro motor; 404. Chain transmission mechanism; 405. Screw rod; 406. Housing. DETAILED DESCRIPTION

[0032] The specific implementation of the present utility model will be described below with reference to the accompanying drawings.

[0033] like Figure 1-Figure 7 As shown, the multifunctional propulsion mechanism of the mining high-voltage switch assembly trolley of this embodiment includes a housing 6, a circuit breaker 5 is installed inside the housing 6, and an electric chassis vehicle assembly 4 is installed below the circuit breaker 5;

[0034] The structure of the electric chassis assembly 4 is as follows: it includes a housing 406, a flange 401 is mounted on one end of the housing 406, a connecting block 402 is provided in the middle of the flange 401, a micro motor 403 is fixed inside the housing 406, the output end of the micro motor 403 is connected to a screw rod 405 via a chain drive mechanism 404, the head of the screw rod 405 extends out of the housing 406 and is fixed to the bottom of the circuit breaker 5 by a nut, that is, the rotation of the screw rod 405 realizes the movement of the circuit breaker 5; a coupling nozzle 1 is fixed to the connecting block 402, and a through hole is provided in the middle of the connecting block 402, which is connected to the tail end of the screw rod 405;

[0035] It also includes a trolley manual propulsion shaft assembly 2, and the structure of the trolley manual propulsion shaft assembly 2 is: an opening is provided on the outer shell 6, a shaft sleeve 202 is fixed at the opening, an isolation shaft 201 is installed through the interior of the shaft sleeve 202, and at the same time, a compression spring 203 is sleeved on the isolation shaft 201, one end of the isolation shaft 201 is outside the outer shell 6, and a crank 7 is provided on the isolation shaft 201, and the other end of the isolation shaft 201 passes through the shaft sleeve 202 and is installed with an axle pin 204, and the axle pin 204 matches the connecting mouth 1.

[0036] When the shaft pin 204 is connected to the connection nozzle 1, it is in manual state.

[0037] When the axle pin 204 is disengaged from the connection nozzle 1, it is in the automatic state.

[0038] Manual and automatic switching is easy.

[0039] The exterior of the housing 406 is locked to the bottom of the circuit breaker 5 by fasteners.

[0040] The central axes of the isolation shaft 201, the connection nozzle 1, the connection block 402 and the screw rod 405 are located in the same plane, thereby ensuring the reliability of the screw rod 405.

[0041] The connecting nozzle 1 is an integrated structure, which is convenient for processing.

[0042] One end of the coupling nozzle 1 is provided with an elliptical opening 101 , which matches the shaft pin 204 , and the other end of the coupling nozzle 1 is provided with a connecting section fixed to the connecting block 402 .

[0043] The design of the elliptical opening 101 is very convenient for connection with the axle pin 204 , and the connection is reliable and the disconnection is convenient.

[0044] The isolation shaft 201 and the shaft sleeve 202 are both of an integrated structure, which is easy to manufacture and has low cost.

[0045] A boss is provided on the isolation shaft 201 , one end of the boss is provided with a square cross section for convenient connection to the crank 7 , and the other end of the boss is convenient for installing the compression spring 203 .

[0046] A micro switch 3 is installed on the housing 6 above the connection nozzle 1 , and the micro switch 3 is electrically connected to the micro motor 403 .

[0047] The utility model discloses a multifunctional propulsion mechanism for a mining high-voltage switch assembly trolley. A dedicated electric chassis assembly 4 is designed below the circuit breaker 5 and driven by a micro motor 403. The assembly is then connected to a screw rod 405 via a chain drive mechanism 404. A coupling nozzle 1 is added to the top of the screw rod 405. When the trolley of the circuit breaker 5 is manually moved into the working position or the test position, the crank handle 7 is placed on the head of the isolation shaft 201. A little pressure is applied to force the isolation shaft 201 into position, and pressure is generated under the action of the compression spring 203. The shaft pin 204 on the isolation shaft 201 is connected to the connecting mouth 1. By turning the crank 7 clockwise, the trolley of the circuit breaker 5 can be put into the working position, and counterclockwise it can be put into the test position. If the crank 7 is removed, the isolation shaft 201 automatically uses the elastic force of the compression spring 203 to return to the initial state, and the isolation shaft 201 is separated from the connecting mouth 1. At this time, remote operation can be used to control the trolley of the circuit breaker 5 to enter or exit, so that mine automation can be realized, and the underground substation can be remotely controlled in the ground dispatching room.

[0048] This mechanism is based on the principle of electric priority. When the crank 7 is placed on the isolation shaft 201 and moves inward, a micro switch 3 is installed on the inner side of the isolation shaft 201 to automatically disconnect the control part of the motor to prevent conflict between manual operation and electric operation.

[0049] The utility model has a compact overall structure, reliable and sensitive operation and a high safety factor.

[0050] The above description is an explanation of the utility model, not a limitation of the utility model. The scope of the utility model is defined by the claims. Any form of modification can be made within the scope of protection of the utility model.

Claims

1. A multifunctional propulsion mechanism for a mining high-voltage switch assembly trolley, characterized by: It comprises a housing (6), a circuit breaker (5) is installed inside the housing (6), and an electric chassis vehicle assembly (4) is installed below the circuit breaker (5); The structure of the electric chassis vehicle assembly (4) is as follows: it includes a housing (406), one end of the housing (406) is installed with a flange (401), the middle part of the flange (401) is provided with a connecting block (402), a micro motor (403) is fixed inside the housing (406), the output end of the micro motor (403) is connected to a screw rod (405) through a chain transmission mechanism (404), the head of the screw rod (405) extends out of the housing (406) and is fixed to the bottom of the circuit breaker (5) through a nut, that is, the rotation of the screw rod (405) realizes the movement of the circuit breaker (5); a connecting nozzle (1) is fixed on the connecting block (402), a through hole is provided in the middle part of the connecting block (402), and the through hole is connected to the tail end of the screw rod (405); The invention also includes a trolley manual propulsion shaft assembly (2), the structure of which is as follows: an opening is provided on the housing (6), a shaft sleeve (202) is fixed at the opening, an isolation shaft (201) is installed through the interior of the shaft sleeve (202), a compression spring (203) is sleeved on the isolation shaft (201), one end of the isolation shaft (201) is outside the housing (6), and a crank (7) is provided on the isolation shaft (201), and an axle pin (204) is installed after the other end of the isolation shaft (201) passes through the shaft sleeve (202), and the axle pin (204) matches the connecting nozzle (1).

2. The multifunctional propulsion mechanism for a mining high-voltage switch assembly trolley according to claim 1, characterized in that: When the shaft pin (204) is connected to the connecting nozzle (1), it is in a manual state.

3. The multifunctional propulsion mechanism for a mining high-voltage switch assembly trolley according to claim 1, characterized in that: When the shaft pin (204) is separated from the connecting nozzle (1), it is in an automatic state.

4. The multifunctional propulsion mechanism for a mining high-voltage switch assembly trolley according to claim 1, characterized in that: The exterior of the housing (406) is locked to the bottom of the circuit breaker (5) via fasteners.

5. The multifunctional propulsion mechanism for a mining high-voltage switch assembly trolley according to claim 1, characterized in that: The central axes of the isolation shaft (201), the connection nozzle (1), the connection block (402) and the screw rod (405) are located in the same plane.

6. The multifunctional propulsion mechanism for a mining high-voltage switch assembly trolley according to claim 1, characterized in that: The connecting nozzle (1) is an integrated structure.

7. The multifunctional propulsion mechanism for a mining high-voltage switch assembly trolley according to claim 1, characterized in that: One end of the coupling nozzle (1) is provided with an elliptical opening (101), which matches the shaft pin (204), and the other end of the coupling nozzle (1) is provided with a connecting section fixed to the connecting block (402).

8. The multifunctional propulsion mechanism for a mining high-voltage switch assembly trolley according to claim 1, characterized in that: The isolation rotating shaft (201) and the shaft sleeve (202) are both integral structures.

9. The multifunctional propulsion mechanism for a mining high-voltage switch assembly trolley according to claim 1, characterized in that: A boss is provided on the isolation rotating shaft (201).

10. The multifunctional propulsion mechanism for a mining high-voltage switch assembly trolley according to claim 1, characterized in that: A micro switch (3) is installed on the housing (6) above the connection nozzle (1).

Images