A mine wellhead protection device for mine hoist

Abstract

The present invention relates to the field of mine protection technology, and specifically refers to a mine wellhead protection device for a mine hoist, which includes a wellhead frame, four evenly distributed protection frame assemblies are arranged on both sides of the wellhead frame, and shielding sheds are arranged on the four protection frame assemblies, and the four protection frame assemblies are provided with a hoist rope lifting angle fine-tuning assembly matched with the mine hoist on one side close to the wellhead frame, and the four protection frame assemblies are provided with a hoist rope lifting speed fine-tuning assembly near the top of the wellhead frame. A mine wellhead protection device for a mine hoist of the present invention can cooperate with the mine hoist to correct slight deviations of the cables at the four ends of the mine car, is easy to control, simple to operate, and avoids the situation where the lifting speed of a single hoist is too fast.

Description

Technical Field

[0001] The invention relates to the technical field of mine protection, and in particular to a mine wellhead protection device used for a mine hoist. Background Art

[0002] The shaft protection device of the mine hoist is an important part of ensuring the safety of mine operations. Its setting is to provide better stability for the mine car when using the mine hoist in the mine to prevent the mine car from tipping over under bad weather conditions or due to external forces. It should also have protective performance to prevent people or objects from accidentally falling into the shaft. The existing technology usually sets up solid fences and doors to achieve this;

[0003] In the actual use of mine hoists, cables are usually used to hoist the four ends of the mine car respectively. However, the cables at each end cannot completely maintain the initial ideal state and may be tangled, bent or interfered by other external forces, making it impossible for the mine car to remain level during the lifting process. The existing technology uses a drive motor and a transmission to individually adjust the length of a single cable. Since the operation steps of the motor and the transmission are complicated and a suitable gear needs to be found, it is difficult to operate when there is a slight deviation in the cables at the four ends, which can easily cause the mine car to shake. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a mine wellhead protection device for a mine hoist, which can cooperate with the mine hoist to correct slight deviations of the cables at the four ends of the mine car, is easy to control, simple to operate, and at the same time avoids the situation where the lifting speed of a single hoist is too fast.

[0005] In order to solve the above technical problems, the technical solution provided by the present invention is: a mine shaft mouth protection device for a mine hoist, which includes a shaft mouth frame, four evenly distributed protection frame assemblies are arranged on both sides of the shaft mouth frame, and shielding sheds are arranged on the four protection frame assemblies, and a lifting rope lifting angle fine-tuning component that cooperates with the mine hoist is arranged on one side of the four protection frame assemblies close to the shaft mouth frame, and a lifting rope lifting speed fine-tuning component is arranged on the top of the four protection frame assemblies close to the shaft mouth frame.

[0006] As an improvement, the protection frame assembly includes a fixed base plate fixedly installed with the wellhead frame, a first support column is provided on the side of the fixed base plate close to the wellhead frame, and a second support column is provided on the side of the fixed base plate away from the wellhead frame. The second support column is in an inverted L shape, and the lifting rope lifting angle fine-tuning assembly is installed between the first support column and the second support column, and the top end of the second support column is used to install the lifting rope lifting speed fine-tuning assembly.

[0007] As an improvement, a slide rail frame is provided on the side of the first support column close to the second support column, and the lifting rope lifting angle fine-tuning assembly includes a rack slide rail assembly slidably connected to the slide rail frame. A first axis frame is provided at the top of the first support column, and the first axis frame is rotatably connected to a gear shaft meshing with the rack slide rail assembly on the side close to the second support column, and the first axis frame is rotatably connected to an adjustment cam on the side away from the second support column.

[0008] As an improvement, a second axis frame is provided on the second support column, and the lifting rope lifting angle fine-tuning assembly also includes a swing arm rotatably connected to the second axis frame. A strip limit sliding frame is fixedly installed on the side of the rack slide rail assembly away from the slide rail frame, and the swing arm is slidably connected to the strip limit sliding frame at one end close to the strip limit sliding frame.

[0009] As an improvement, the swing arm includes a swing arm body, one end of which is provided with a transmission shaft rotatably connected to the second shaft frame, and the other end is rotatably connected to a limit sliding block slidably connected to a strip limit sliding frame, and the other end of the transmission shaft is connected to a drive motor.

[0010] As an improvement, the rack slide rail assembly includes a slide rail slidably connected to the slide rail frame, a rack meshing with the gear shaft is provided on one side of the slide rail, and a back plate is provided between the rack and the slide rail to prevent the gear shaft from being displaced.

[0011] As an improvement, the gear shaft includes a gear body meshing with the rack, the gear body is fixedly connected to an output shaft rotatably connected to the second shaft frame, and the adjustment cam includes a cam body fixedly connected to the output shaft, and the cam body is provided with a rope slide groove.

[0012] As an improvement, the protection frame assembly also includes a third axis frame located on both sides of the top end of the second support column, the lifting rope lifting speed fine-tuning assembly includes a rotating shaft rotatably connected to the third axis frame, one end of the rotating shaft is fixedly connected to a centrifugal reducer located outside the third axis frame, the centrifugal reducer includes a cylinder, a plurality of evenly distributed limit slide grooves are provided on the cylinder, the limit slide grooves are provided with limit blocks that can move up and down in the limit slide grooves, a reducer housing fixedly mounted on the third axis frame is connected to the outer shell of the cylinder, and a limit groove matching the limit block is provided on the top of the reducer housing.

[0013] As an improvement, the rotating shaft is provided with two limit plates located in the third shaft frame, a damping wheel rotatably connected to the rotating shaft is provided between the two limit plates, and a damping friction pad is filled between the damping wheel and the limit plates.

[0014] After adopting the above structure, the present invention has the following advantages:

[0015] 1. The overall structure of the device is simple and easy to operate, and the effect of adjusting the rope of the mine car is intuitive and clear, without the need for complex structure devices such as variable speed drive motors, transmissions and other devices for assistance;

[0016] 2. It is equipped with a hoisting rope lifting speed fine-tuning component, which can effectively prevent the rope from driving the mine car to lift too fast. Compared with the existing technology, it does not require a complex motor control system and a transmission to complete the fine-tuning of the lifting speed of one end of the rope;

[0017] 3. A hoisting rope lifting angle fine-tuning component is provided, which can fine-tune the tension of the two ropes at the same end of the mine car after using the hoisting rope lifting speed fine-tuning component, and the rope length can also be adjusted under external force interference. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The structure diagram of a mine wellhead protection device for a mine hoist of the present invention is shown in FIG. Figure 1 .

[0019] Figure 2 The structure diagram of a mine wellhead protection device for a mine hoist of the present invention is shown in FIG. Figure 2 .

[0020] Figure 3 The present invention is a schematic structural diagram of a protection frame assembly of a mine wellhead protection device for a mine hoist.

[0021] Figure 4 The invention is an assembly of a hoist rope lifting angle fine adjustment component for a mine wellhead protection device used for a mine hoist. Figure 1 .

[0022] Figure 5 The invention is an assembly of a hoist rope lifting angle fine adjustment component for a mine wellhead protection device used for a mine hoist. Figure 2 .

[0023] Figure 6 The present invention is a schematic structural diagram of a swing arm of a mine wellhead protection device for a mine hoist.

[0024] Figure 7 The present invention is a schematic structural diagram of a rack slide rail assembly of a mine wellhead protection device for a mine hoist.

[0025] Figure 8 The invention discloses a schematic structural diagram of a gear shaft and an adjusting cam of a mine wellhead protection device for a mine hoist.

[0026] Fig. 9 The present invention is a structural schematic diagram of a hoist rope lifting speed fine-tuning assembly of a mine wellhead protection device for a mine hoist.

[0027] Fig.10The invention discloses a centrifugal reducer for a mine wellhead protection device of a mine hoist.

[0028] As shown in the figure: 1. Wellhead frame; 2. Protection frame assembly; 201. Fixed bottom plate; 202. Second support column; 203. First support column; 204. Second axis frame; 205. First axis frame; 206. Slide rail frame; 207. Third axis frame; 3. Shelter; 4. Lifting rope lifting angle fine adjustment assembly; 401. Swing arm; 4011. Swing arm body; 4012. Transmission shaft; 4013. Limit slider; 402. Bar limit slide frame; 403. Rack slide assembly; 4031. Slide rail; 4032, rack; 4033, back plate; 404, gear shaft; 4041, gear body; 4042, output shaft; 405, adjustment cam; 4051, cam body; 4052, rope slide; 5, lifting rope lifting speed fine-tuning assembly; 501, rotating shaft; 502, limit plate; 503, damping wheel; 504, centrifugal reducer; 5041, cylinder; 5042, limit slide; 5043, limit block; 505, reducer housing; 506, limit groove. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0030] Combined with Figure 1 , Attachment Figure 2 and attached Figure 3 :

[0031] A mine shaft protection device for a mine hoist, comprising a shaft frame 1, four evenly distributed protection frame assemblies 2 are arranged on both sides of the shaft frame 1, and shielding sheds 3 are arranged on the four protection frame assemblies 2. The protection frame assembly 2 comprises a fixed base plate 201 fixedly mounted with the shaft frame 1, a first support column 203 is arranged on the side of the fixed base plate 201 close to the shaft frame 1, and a second support column 202 is arranged on the side of the fixed base plate 201 away from the shaft frame 1, and the second support column 202 is in an inverted L shape, and the lifting rope lifting angle fine-tuning component 4 is installed between the first support column 203 and the second support column 202, and the top end of the second support column 202 is used to install the lifting rope lifting speed fine-tuning component 5.

[0032] Through this structure, the shelter 3 is used to prevent rain, and the four evenly distributed protection frame assemblies 2 form fences on both sides of the wellhead frame 1 to provide protection and prevent falling;

[0033] A mining winch is placed on both sides of each of the protective frame assemblies 2. The mining winch is a prior art and is not described in detail here.

[0034] Combined with Figure 1 , Attachment Figure 4 , Attachment Figure 5 , Attachment Figure 6 , Attachment Figure 7 and attached Figure 8 :

[0035] The four protection frame assemblies 2 are provided with a hoisting rope lifting angle fine-adjusting assembly 4 matched with the mine hoist on the side close to the wellhead frame 1, the first support column 203 is provided with a slide rail frame 206 on the side close to the second support column 202, the hoisting rope lifting angle fine-adjusting assembly 4 includes a rack slide rail assembly 403 slidably connected to the slide rail frame 206, the top of the first support column 203 is provided with a first shaft frame 205, the first shaft frame 205 is rotatably connected to the side close to the second support column 202 with a gear shaft 404 meshing with the rack slide rail assembly 403, and the first shaft frame 205 is rotatably connected to the side away from the second support column 202 with an adjusting cam 405;

[0036] A second shaft frame 204 is provided on the second support column 202, and the lifting rope lifting angle fine-tuning assembly 4 also includes a swing arm 401 rotatably connected to the second shaft frame 204, and a strip-shaped limit sliding frame 402 is fixedly installed on the side of the rack slide rail assembly 403 away from the slide rail frame 206, and the end of the swing arm 401 close to the strip-shaped limit sliding frame 402 is slidably connected to the strip-shaped limit sliding frame 402;

[0037] The swing arm 401 includes a swing arm body 4011, one end of the swing arm body 4011 is provided with a transmission shaft 4012 rotatably connected to the second shaft frame 204, the other end of the swing arm body 4011 is rotatably connected to a limit slider 4013 slidably connected to the bar-shaped limit slider frame 402, and the other end of the transmission shaft 4012 is connected to the driving motor;

[0038] The rack rail assembly 403 includes a rail 4031 slidably connected to the rail frame 206, a rack 4032 meshing with the gear shaft 404 is provided on one side of the rail 4031, and a back plate 4033 is provided between the rack 4032 and the rail 4031 to prevent the gear shaft 404 from deviating;

[0039] The gear shaft 404 includes a gear body 4041 meshing with the rack 4032, and the gear body 4041 is fixedly connected to an output shaft 4042 rotatably connected to the second shaft frame 204. The adjustment cam 405 includes a cam body 4051 fixedly connected to the output shaft 4042, and the cam body 4051 is provided with a rope slide groove 4052.

[0040] Through the above structure, the driving motor drives the transmission shaft 4012 to rotate, and the transmission shaft 4012 drives the swing arm body 4011 to rotate, thereby driving the limit slider 4013 to revolve around the axis of the transmission shaft 4012, and then drives the bar-shaped limit slide frame 402 to move left and right, and the bar-shaped limit slide frame 402 drives the rack 4032 and the slide rail 4031 to move along the slide rail frame 206, thereby driving the gear body 4041 to rotate, and the gear body 4041 drives the cam body 4051 to rotate through the output shaft 4042. When the cam body 4051 rotates to the level of the two protruding ends, see the attached Figure 5 At this time, the cables at both ends can be separated to the maximum distance. When the cam body 4051 rotates until the two protruding ends are vertical, the cables at both ends can be separated to the minimum distance, thereby achieving fine-tuning. The back plate 4033 is used to block the path of splashing slag falling into the gear body 4041 and the rack 4032, and at the same time prevent the gear body 4041 from separating from the rack 4032, thereby enhancing stability.

[0041] Combined with Figure 2 , Attachment Figure 3 , Attachment Fig. 9 and attached Fig.10 :

[0042] The four protection frame assemblies 2 are provided with a lifting rope lifting speed fine-tuning assembly 5 near the top of the wellhead frame 1. The protection frame assembly 2 also includes a third axis frame 207 located on both sides of the top end of the second support column 202. The lifting rope lifting speed fine-tuning assembly 5 includes a rotating shaft 501 rotatably connected to the third axis frame 207, and one end of the rotating shaft 501 is fixedly connected to a centrifugal reducer 504 located outside the third axis frame 207. The centrifugal reducer 504 includes a cylindrical body 5041, and a plurality of evenly distributed limiting slide grooves 5042 are provided on the cylindrical body 5041. The limiting slide groove 5042 is provided with a limiting block 5043 that can move up and down in the limiting slide groove 5042. The outer shell of the cylindrical body 5041 is connected with a reducer housing 505 fixedly installed on the third axis frame 207, and the top of the reducer housing 505 is provided with a limiting groove 506 that matches the limiting block 5043;

[0043] The rotating shaft 501 is provided with two limiting plates 502 located in the third shaft frame 207 , a damping wheel 503 rotatably connected to the rotating shaft 501 is provided between the two limiting plates 502 , and a damping friction pad is filled between the damping wheel 503 and the limiting plates 502 .

[0044] Through the above structure, when the rope is placed on the damping wheel 503 and moves, a certain resistance is provided due to the damping friction pad filled between the damping wheel 503 and the limit plate 502. The damping friction pad is a prior art and is not described here. The damping wheel 503, the limit plate 502, the rotating shaft 501 and the centrifugal reducer 504 rotate synchronously. When the centrifugal reducer 504 rotates at a faster speed, that is, the rope drives the damping wheel 503 to rotate too fast, the limit block 5043 located in the cylinder 5041 will fall out when passing through the range of the limit groove 506, causing the cylinder 5041 to stop when contacting the edge of the limit groove 506. At this time, the rope continues to move and generates sliding friction with the damping wheel 503. A part of the sliding friction overcomes the friction resistance between the damping wheel 503 and the limit plate 502, causing the damping wheel 503 and the rotating shaft 501 to rotate, thereby playing the role of decelerating the rope lifting.

[0045] In the specific implementation of the present invention, the ropes of the hoisting machine located on both sides of the protection frame assembly are passed over the two damping wheels 503 on the third shaft frame, so that the ropes are placed on the damping wheels 503, and then slide down along the rope slide groove 4042 of the cam body 4051, and the corresponding fixing ears at the four ends of the mine car are fixed by two strands of rope. This is the prior art and is not described here. In the initial state of the cam body 4051, the two protruding ends are vertically directed;

[0046] After the eight winches are started at the same time, the mine car moves up and down under the traction of the rope. Since the damping friction pad is filled between the damping wheel 503 and the limit plate 502, a certain friction resistance is provided, so that the damping wheel 503, the limit plate 502, the rotating shaft 501 and the centrifugal reducer 504 rotate synchronously. When the centrifugal reducer 504 rotates at a faster speed, that is, when the rope drives the damping wheel 503 to rotate too fast, the limit block 5043 located in the cylinder 5041 will come out when passing through the range of the limit groove 506, so that the cylinder 5041 will stop when it contacts the edge of the limit groove 506. At this time, the rope continues to move and has sliding friction with the damping wheel 503. A part of the sliding friction overcomes the friction resistance between the damping wheel 503 and the limit plate 502, so that the damping wheel 503 and the rotating shaft 501 rotate, thereby playing the role of decelerating the rope lifting.

[0047] Based on the above scenario, at this time, the ropes on both sides of the same protective frame assembly 2 are of different lengths. At this time, the drive motor is started, and the drive motor drives the transmission shaft 4012 to rotate, and the transmission shaft 4012 drives the swing arm body 4011 to rotate, thereby driving the limit slider 4013 to revolve around the axis of the transmission shaft 4012, and then drives the bar-shaped limit slide frame 402 to move left and right, and the bar-shaped limit slide frame 402 drives the rack 4032 and the slide rail 4031 to move along the slide rail frame 206, thereby driving the gear body 4041 to rotate, and the gear body 4041 drives the cam body 4051 to rotate through the output shaft 4042. When the cam body 4051 rotates to the level of the two protruding ends, see the attached Figure 5 At this time, the cables at both ends can be separated to the maximum distance. When the cam body 4051 rotates until the two protruding ends are vertical, the cables at both ends can be separated to the minimum distance, thereby achieving the effect of fine-tuning the tension of the ropes on both sides.

[0048] The present invention and its implementation methods are described above, and such description is not restrictive, and the actual structure is not limited thereto. In general, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can creatively design a structure and implementation method similar to the technical solution, which should fall within the protection scope of the present invention.

Claims

1. A mine wellhead protection device for a mine hoist, comprising a wellhead frame (1), four evenly distributed protection frame assemblies (2) are arranged on both sides of the wellhead frame (1), and shielding sheds (3) are arranged on the four protection frame assemblies (2), characterized in that: A hoist rope lifting angle fine-adjusting assembly (4) cooperating with a mine hoist is provided on one side of the four protection frame assemblies (2) close to the wellhead frame (1), and a hoist rope lifting speed fine-adjusting assembly (5) is provided on the top of the four protection frame assemblies (2) close to the wellhead frame (1); The protection frame assembly (2) comprises a fixed base plate (201) fixedly mounted on the wellhead frame (1); a first support column (203) is provided on a side of the fixed base plate (201) close to the wellhead frame (1); a second support column (202) is provided on a side of the fixed base plate (201) away from the wellhead frame (1); the second support column (202) is in an inverted L shape; the lifting rope lifting angle fine-tuning assembly (4) is installed between the first support column (203) and the second support column (202); and the top end of the second support column (202) is used to install the lifting rope lifting speed fine-tuning assembly (5); The protection frame assembly (2) further comprises a third shaft frame (207) located on both sides of the top end of the second support column (202); the lifting rope lifting speed fine-tuning assembly (5) comprises a rotating shaft (501) rotatably connected to the third shaft frame (207); one end of the rotating shaft (501) is fixedly connected to a centrifugal reducer (504) located outside the third shaft frame (207); the centrifugal reducer (504) comprises a cylindrical body (5041); a plurality of evenly distributed limiting slide grooves (5042) are provided on the cylindrical body (5041); a limiting block (5043) movable up and down is provided in the limiting slide groove (5042); a reducer housing (505) fixedly mounted on the third shaft frame (207) is connected to the outer shell of the cylindrical body (5041); a limiting groove (506) matching the limiting block (5043) is provided on the top of the reducer housing (505); The rotating shaft (501) is provided with two limiting plates (502) located in the third shaft frame (207); a damping wheel (503) rotatably connected to the rotating shaft (501) is provided between the two limiting plates (502); and a damping friction pad is filled between the damping wheel (503) and the limiting plates (502); A slide rail frame (206) is provided on the side of the first support column (203) close to the second support column (202); the lifting rope lifting angle fine-tuning assembly (4) comprises a rack slide rail assembly (403) slidably connected to the slide rail frame (206); a first shaft frame (205) is provided at the top of the first support column (203); a gear shaft (404) meshingly connected to the rack slide rail assembly (403) is rotatably connected to the side of the first shaft frame (205) close to the second support column (202); and an adjustment cam (405) is rotatably connected to the side of the first shaft frame (205) away from the second support column (202); A second shaft frame (204) is provided on the second support column (202), the lifting rope lifting angle fine-tuning assembly (4) further comprises a swing arm (401) rotatably connected to the second shaft frame (204), a strip-shaped limit sliding frame (402) is fixedly mounted on the side of the rack slide rail assembly (403) away from the slide rail frame (206), and an end of the swing arm (401) close to the strip-shaped limit sliding frame (402) is slidably connected to the strip-shaped limit sliding frame (402); The swing arm (401) comprises a swing arm body (4011), one end of the swing arm body (4011) is provided with a transmission shaft (4012) rotatably connected to the second shaft frame (204), the other end of the swing arm body (4011) is rotatably connected to a limit slider (4013) slidably connected to the bar-shaped limit slider frame (402), and the other end of the transmission shaft (4012) is connected to a drive motor.

2. A mine wellhead protection device for a mine hoist according to claim 1, characterized in that: The rack rail assembly (403) comprises a rail (4031) slidably connected to the rail frame (206); a rack (4032) meshing with the gear shaft (404) is provided on one side of the rail (4031); and a back plate (4033) is provided between the rack (4032) and the rail (4031) to prevent the gear shaft (404) from being displaced.

3. A mine wellhead protection device for a mine hoist according to claim 2, characterized in that: The gear shaft (404) comprises a gear body (4041) meshing with the rack (4032); an output shaft (4042) rotatably connected to the second shaft frame (204) is fixedly connected to the gear body (4041); the adjustment cam (405) comprises a cam body (4051) fixedly connected to the output shaft (4042); a rope slide groove (4052) is provided on the cam body (4051).

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