Mining explosion-proof type bidirectional pull-cord switch
By designing a mining explosion-proof two-way pull-rope switch and adopting a combined structure of a transfer switch, a drive shaft, a swing arm, a disc, a housing, a sleeve, a pin and a spring, the problems of time-consuming and labor-intensive operation and safety hazards of existing coal mining machine transfer switches are solved, and rapid emergency braking and switch protection are achieved.
Patent Information
- Application Number
- CN202422804178.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-18
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-11-18
AI Technical Summary
The existing coal mining machine's transfer switch is time-consuming and labor-intensive to operate in an emergency and poses a safety hazard. The one-way rope pulling device has low transmission sensitivity and the wire rope is too long, resulting in untimely braking.
A flameproof two-way rope pull switch for mining is designed. The switch, which includes a transfer switch, a transmission shaft, a swing arm, a disc, a housing, a sleeve, a bayonet and a spring, is designed to achieve a two-way pulling operation. The cooperation between the bayonet, the slot and the limit hole ensures that the switch can be quickly stopped in an emergency and protects the transfer switch.
It improves the timeliness of emergency braking, enhances the safety of workers, avoids damage to the transfer switch due to excessive pulling force, and ensures the normal operation of the switch.
Smart Images
Figure CN223390413U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of coal mining equipment, and in particular to a flameproof two-way pull-rope switch for mining. Background Art
[0002] When the coal mining machine is in production, if an emergency occurs, it depends on personnel to manually cut off the switch, which is not only time-consuming and labor-intensive, but also easily poses a threat to personnel safety. If the machine is not shut down in time, it can easily lead to major safety accidents.
[0003] According to the existing technology, some coal mining machines are equipped with a handle switch at the electric control box to enable coal miners to turn off the transfer switch in time. However, such a device will also pose a threat to the safety of workers when an accident occurs underground. Some coal mining machines are also equipped with a pull rope switch at the electric control box, but it is generally a one-way pulling device, or in order to enable workers to control the switch at a farther location, the wire rope is set to a longer length. However, with such a setting, the transmission sensitivity will be reduced if the wire rope is too long, and pulling the wire rope will be more laborious, and it will not be possible to brake in time, thereby causing certain new safety hazards.
[0004] To address the existing problems, we have proposed a new type of explosion-proof two-way pull-rope switch for mining. Its structural design is reasonable, meeting the needs of two-way switches, greatly improving the timeliness of equipment emergency braking, and enhancing worker safety. Utility Model Content
[0005] In order to improve the inconvenience of using existing transfer switches, the present application provides a mining flameproof two-way pull-rope switch.
[0006] The present application provides a mining flameproof two-way pull rope switch adopting the following technical solution:
[0007] A mine-use flameproof two-way pull-rope switch comprises a transfer switch, a transmission shaft, a swing arm, a disc, a housing, a sleeve, a bayonet and a spring. The transfer switch is fixedly mounted on one end of the transmission shaft, the swing arm is fixedly mounted on the other end of the transmission shaft, the disc is fixedly sleeved on the transmission shaft, the housing is coaxially sleeved on the outside of the disc, a slot is provided on one side of the housing, the sleeve is embedded in the outer circumference of the disc, the bayonet is slidably connected to one end of the sleeve, the spring is arranged inside the sleeve, and one end of the spring abuts against the bayonet.
[0008] By adopting the above technical solution, through the arrangement of the transfer switch, transmission shaft, swing arm, disc, housing, sleeve, pin and spring, when the switch is in the closed state, the pin will abut the inner surface of the housing, a part of the pin is located in the sleeve, and the spring is in a compressed state. When the switch is stopped, the two steel ropes can be stretched in both directions, so that the steel ropes drive the swing arm to rotate, the swing arm drives the transmission shaft to rotate, and the transmission shaft drives the transfer switch and the disc to rotate. When the disc drives the pin to rotate to the slot of the housing, the spring will pop the pin out of the sleeve, so that the pin is inserted into the slot and clamps the housing, preventing the disc from rotating, and stopping the transfer switch, transmission shaft and swing arm from rotating. The force on the rope can be suspended to avoid excessive tension and damage to the transfer switch, so that the switch can be stopped by bidirectional stretching. When the switch is restored to the closed state, the pin is pushed into the housing with a tool, and then the swing arm is toggled clockwise, and the switch is now in the closed state.
[0009] Preferably, a diamond-shaped plate is installed on a side of the transfer switch close to the transmission shaft, and mounting holes are provided at corners of the diamond-shaped plate.
[0010] By adopting the above technical solution and setting the diamond-shaped plate, a supporting effect can be played on the transfer switch.
[0011] Preferably, a fastening screw is inserted into the middle of the swing arm, and the swing arm is fixed to the transmission shaft through the fastening screw.
[0012] By adopting the above technical solution, the swing arm and the transmission shaft can be disassembled.
[0013] Preferably, both ends of the swing arm are provided with through holes for connecting steel wire ropes.
[0014] By adopting the above technical solution, the two through holes can be connected to two steel ropes respectively, so that both ends of the swing arm are connected to steel ropes, which is convenient for bidirectional stretching.
[0015] Preferably, a connecting hole is provided at the center of the disc.
[0016] By adopting the above technical solution, the transmission shaft can be fixed to the disc through the connecting hole.
[0017] Preferably, a thread groove is provided on the outer circumference of the disc, and the sleeve is threadedly connected in the thread groove.
[0018] By adopting the above technical solution and setting the thread groove, the sleeve can be disassembled.
[0019] Preferably, a limiting portion is provided at one end of the bayonet located in the sleeve.
[0020] By adopting the above technical solution and setting the limiting portion, the bayonet pin can be limited to prevent the bayonet pin from being separated from the sleeve.
[0021] Preferably, the outer circumference of the housing is provided with limiting holes which are staggered with the card slots.
[0022] By adopting the above technical solution and setting the limiting hole, when the disc drives the pin to rotate to the limiting hole, the pin will be inserted into the limiting hole to stop the rotation of the disc, so that the rotation angle of the pin part of the pull-cord switch will not be greater than 90°, avoiding the situation where the swing arm rotates too much and affects the normal operation of the pull-cord switch, and can effectively protect the transfer switch.
[0023] In summary, this application includes at least one of the following beneficial technical effects:
[0024] 1. Through the arrangement of the transfer switch, transmission shaft, swing arm, disc, housing, sleeve, bayonet and spring, when the switch is in the closed state, the bayonet will abut the inner surface of the housing, a part of the bayonet is located in the sleeve, and the spring is in a compressed state. When the switch is stopped, the two steel ropes can be stretched in both directions, so that the steel ropes drive the swing arm to rotate, and the swing arm drives the transmission shaft to rotate, and the transmission shaft drives the transfer switch and the disc to rotate. When the disc drives the bayonet to rotate to the slot of the housing, the spring will pop the bayonet out of the sleeve, so that the bayonet is inserted into the slot to clamp the housing, preventing the rotation of the disc and stopping the rotation of the transfer switch, transmission shaft and swing arm. The rope force can be suspended to avoid excessive tension and damage to the transfer switch. The switch can be stopped by bidirectional stretching, which is convenient to use.
[0025] 2. Through the setting of the limit hole, when the disc drives the bayonet to rotate to the limit hole, the bayonet will insert into the limit hole to stop the rotation of the disc, so that the rotation angle of the bayonet part of the pull-cord switch will not exceed 90°, avoiding the situation where the swing arm rotates too much and affects the normal operation of the pull-cord switch, which can effectively protect the transfer switch. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 This is a schematic diagram of the overall structure of a flameproof two-way pull-rope switch for mining use in this application;
[0027] Figure 2 This is a schematic diagram of the shell structure of a mine-used flameproof two-way pull-rope switch;
[0028] Figure 3 This is a schematic diagram of the disc structure of a mine-used flameproof two-way pull-wire switch;
[0029] Figure 4 This is a schematic diagram of the sleeve disassembly structure of a mine-used flameproof two-way pull-rope switch in this application.
[0030] Figure numerals: 1. conversion switch; 11. diamond plate; 2. transmission shaft; 3. swing arm; 31. fastening screw; 32. through hole; 4. disc; 41. connecting hole; 42. threaded groove; 5. housing; 51. slot; 52. limiting hole; 6. sleeve; 7. bayonet pin; 71. limiting part; 8. spring. DETAILED DESCRIPTION
[0031] The following is combined with Figure 1-Figure 4 This application is described in further detail.
[0032] The embodiment of the present application discloses a flameproof two-way pull-rope switch for mining.
[0033] Reference Figure 1 A mine flameproof two-way pull rope switch includes a transfer switch 1, a transmission shaft 2, a swing arm 3, a disc 4, a housing 5, a sleeve 6, a bayonet 7 and a spring 8. A diamond plate 11 is installed on the side of the transfer switch 1 close to the transmission shaft 2. The corners of the diamond plate 11 are provided with mounting holes. The diamond plate 11 can support the transfer switch 1. The transfer switch 1 is fixedly mounted on one end of the transmission shaft 2, and the swing arm 3 is fixedly mounted on the other end of the transmission shaft 2. A fastening screw 31 is inserted in the middle of the swing arm 3. The swing arm 3 is fastened by the fastening screw 31. 1 is fixedly installed with the transmission shaft 2, and both ends of the swing arm 3 are provided with through holes 32 for connecting steel wire ropes. The two through holes 32 can be connected to two steel wire ropes respectively, so that both ends of the swing arm 3 are connected with steel wire ropes, which is convenient for bidirectional stretching. The disc 4 is fixedly sleeved on the transmission shaft 2, and a connecting hole 41 is opened at the center of the disc 4. The transmission shaft 2 passes through the connecting hole 41. The shell 5 is coaxially sleeved on the outside of the disc 4. A card slot 51 is opened on one side of the shell 5. The sleeve 6 is embedded and installed on the outer circumference of the disc 4. The bayonet 7 is slidably connected to one end of the sleeve 6, and the elastic The spring 8 is arranged inside the sleeve 6, and one end of the spring 8 abuts against the bayonet 7. Through the arrangement of the transfer switch 1, the transmission shaft 2, the swing arm 3, the disc 4, the housing 5, the sleeve 6, the bayonet 7 and the spring 8, when the switch is in the closed state, the bayonet 7 will abut against the inner surface of the housing 5, a part of the bayonet 7 is located in the sleeve 6, and the spring 8 is in a compressed state. When the switch is stopped, the two steel wire ropes can be stretched in both directions, so that the steel wire ropes drive the swing arm 3 to rotate, so that the swing arm 3 drives the transmission shaft 2 to rotate, and so that the transmission shaft 2 drives the transfer switch 1 and the disc 4 to rotate. When the disc 4 drives the bayonet 7 to rotate to the slot 51 of the housing 5, the spring 8 will pop the bayonet 7 out of the sleeve 6, so that the bayonet 7 is inserted into the slot 51 and clamps the housing 5, preventing the disc 4 from rotating, so that the transfer switch 1, the transmission shaft 2 and the swing arm 3 stop rotating, and the force on the rope can be suspended to avoid excessive tension and damage to the transfer switch 1, so that the switch can be stopped by bidirectional stretching; when restoring the switch to the closed state, use a tool to press the bayonet 7 and push it into the housing 5, and then move the swing arm 3 clockwise, and the switch is now in the closed state.
[0034] Among them, a thread groove 42 is provided on the outer circumference of the disc 4, and the outer surface of the sleeve 6 is provided with an external thread that is compatible with the thread groove 42. The sleeve 6 is threadedly connected in the thread groove 42. Through the setting of the thread groove 42, the sleeve 6 can be disassembled. A limiting portion 71 is provided at one end of the pin 7 located in the sleeve 6. Through the setting of the limiting portion 71, the pin 7 can be limited to prevent the pin 7 from detaching from the sleeve 6.
[0035] In addition, a limiting hole 52 is provided on the outer circumference of the shell 5, which is staggered with the slot 51. Through the setting of the limiting hole 52, when the disk 4 drives the pin 7 to rotate to the limiting hole 52, the pin 7 will be inserted into the limiting hole 52 to stop the rotation of the disk 4, so that the rotation angle of the pin 7 part of the pull-cord switch will not be greater than 90°, avoiding the situation where the swing arm 3 rotates too much and affects the normal operation of the pull-cord switch, which can effectively protect the transfer switch 1.
[0036] The implementation principle of the present application is as follows: through the arrangement of the conversion switch 1, the transmission shaft 2, the swing arm 3, the disk 4, the housing 5, the sleeve 6, the latch 7 and the spring 8, when the switch is in the closed state, the latch 7 will abut the inner surface of the housing 5, a part of the latch 7 is located in the sleeve 6, and the spring 8 is in a compressed state. When the switch is stopped, the two steel ropes can be stretched in both directions, so that the steel rope drives the swing arm 3 to rotate, and the swing arm 3 drives the transmission shaft 2 to rotate, and the transmission shaft 2 drives the conversion switch 1 and the disk 4 to rotate. When the disk 4 drives the latch 7 to rotate to the slot 51 of the housing 5, the spring 8 will pop the latch 7 out of the sleeve 6, so that the latch 7 is inserted into the slot 51 to clamp the housing 5, preventing the disc 4 from rotating. The disk 4 rotates, causing the transfer switch 1, the transmission shaft 2 and the swing arm 3 to stop rotating, and the force on the rope can be suspended to avoid excessive tension that may damage the transfer switch 1, so that the switch can be stopped by bidirectional stretching; when restoring the switch to the closed state, use a tool to press the pin 7 and push it into the housing 5, and then turn the swing arm 3 clockwise. At this time, the switch is in the closed state. When the disk 4 drives the pin 7 to rotate to the limit hole 52, the pin 7 will be inserted into the limit hole 52 to stop the rotation of the disk 4, so that the rotation angle of the pin 7 part of the pull-rope switch will not be greater than 90°, avoiding the situation where the swing arm 3 rotates too much and affects the normal operation of the pull-rope switch, which can effectively protect the transfer switch 1.
[0037] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.
Claims
1. A flameproof two-way pull-cord switch for mining, characterized by: The invention comprises a switching switch (1), a transmission shaft (2), a swing arm (3), a disc (4), a housing (5), a sleeve (6), a bayonet (7) and a spring (8); the switching switch (1) is fixedly mounted on one end of the transmission shaft (2); the swing arm (3) is fixedly mounted on the other end of the transmission shaft (2); the disc (4) is fixedly sleeved on the transmission shaft (2); the housing (5) is coaxially sleeved on the outside of the disc (4); a slot (51) is provided on one side of the housing (5); the sleeve (6) is embedded in the outer circumference of the disc (4); the bayonet (7) is slidably connected to one end of the sleeve (6); the spring (8) is arranged inside the sleeve (6), and one end of the spring (8) abuts against the bayonet (7).
2. The flameproof two-way pull-wire switch for mining according to claim 1, characterized in that: A diamond-shaped plate (11) is installed on one side of the conversion switch (1) close to the transmission shaft (2), and mounting holes are provided at the corners of the diamond-shaped plate (11).
3. The flameproof two-way pull-wire switch for mining according to claim 1, characterized in that: A fastening screw (31) is inserted into the middle of the swing arm (3), and the swing arm (3) is fixedly mounted to the transmission shaft (2) via the fastening screw (31).
4. The flameproof two-way pull-wire switch for mining according to claim 1, characterized in that: Both ends of the swing arm (3) are provided with through holes (32) for connecting a steel wire rope.
5. The flameproof two-way pull-wire switch for mining according to claim 1, characterized in that: A connecting hole (41) is provided at the center of the disc (4).
6. The flameproof two-way pull-wire switch for mining according to claim 1, characterized in that: A thread groove (42) is provided on the outer circumference of the disc (4), and the sleeve (6) is threadedly connected in the thread groove (42).
7. The flameproof two-way pull-wire switch for mining according to claim 1, characterized in that: A limiting portion (71) is provided at one end of the bayonet (7) located inside the sleeve (6).
8. The flameproof two-way pull-wire switch for mining according to claim 1, characterized in that: The outer circumference of the housing (5) is provided with limiting holes (52) staggered with the clamping slots (51).