CN214030613U - Colliery dust protected colliery conveyor - Google Patents

Colliery dust protected colliery conveyor Download PDF

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Publication number
CN214030613U
CN214030613U CN202022704405.7U CN202022704405U CN214030613U CN 214030613 U CN214030613 U CN 214030613U CN 202022704405 U CN202022704405 U CN 202022704405U CN 214030613 U CN214030613 U CN 214030613U
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China
Prior art keywords
bevel gear
fixedly connected
motor
base
support column
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Expired - Fee Related
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CN202022704405.7U
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Chinese (zh)
Inventor
张文君
范力
傅育繁
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Individual
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Individual
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Abstract

The utility model discloses a colliery dust protected colliery conveyor relates to belt conveyor dust keeper technical field. The technical key points are as follows: the automatic spraying device comprises a base, a support is fixedly connected to one side of the base, a first supporting column and a second supporting column are arranged on two sides of the support, a first motor is fixedly connected to one side of the support, a first bevel gear is sleeved on an output shaft of the first motor, the first bevel gear is meshed with the second bevel gear and the third bevel gear, the second bevel gear and the third bevel gear are respectively sleeved on the first supporting column and the second supporting column, a first sleeve and a second sleeve are sleeved on the supporting columns, a fourth bevel gear and a fifth bevel gear are fixedly connected to two ends of the first sleeve and two ends of the second sleeve, the fourth bevel gear is meshed with the fifth bevel gear, the sixth bevel gear and the seventh bevel gear are fixedly connected to one side of the sixth bevel gear and one side of the seventh bevel gear. The utility model has the advantages of can enlarge rivers spray regime, avoid the spray regime undersize to lead to the dust fall effect not good, improve work efficiency.

Description

Colliery dust protected colliery conveyor
Technical Field
The utility model relates to a belt conveyor dust keeper technical field specifically is a colliery dust protected colliery conveyor.
Background
In the production process of coal mines, coal extracted from a coal face is mainly transported to a coal bunker by a belt conveyor so as to realize high-efficiency transportation of the coal. When the belt conveyor transports coal, dust often generates, and the dust not only causes great harm to the underground field operation environment and the physical health of workers, but also is one of important factors inducing the coal dust guarantee. Therefore, the spray head is arranged above the belt conveyor to achieve the effect of reducing the dust.
For example, chinese patent publication No. CN 21116901919 discloses a combined dust cover for a belt conveyor in a coal mine, which comprises a nozzle assembly and a cover body, wherein the nozzle assembly is fixedly mounted on the top surface of an inner cavity of the cover body, the bottom ends of the two sides of the cover body are respectively and fixedly mounted with a base plate, the base plate is used for fixedly connecting the cover body on a frame of the belt conveyor, two ends of the base plate are respectively and movably connected with a support plate, and the opposite surfaces of the support plates are respectively and movably connected with a roller resisting assembly. When the dust-removing device is used, the spray head assembly is positioned in a cavity formed by the belt surface of the belt conveyor and the cover body in a surrounding mode, so that the spray head assembly can achieve the effect of preventing coal dust from flying and diffusing when spraying mist water flow for dust removal.
The above prior art solution has the following drawbacks: when the device is used, because the position of the spray head assembly is fixed, the spray range is smaller when the spray of the mist water flow is carried out, the dust settling effect is worsened in places with more coal dust, and the working efficiency is reduced.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a colliery dust protected colliery conveyor, first motor through setting up, first bevel gear, the second bevel gear, the third bevel gear, the fourth bevel gear, the fifth bevel gear, the sixth bevel gear, the seventh bevel gear, first support column, the second support column, first sleeve, the second sleeve, first carousel, second carousel and sprinkler, make the carousel can rotate, thereby sprinkler on the messenger's carousel rotates, enlarge rivers spray's scope, make the more place of other coal dusts also can spray to with the rivers, avoid the spray regime undersize to lead to the dust fall effect variation, improve work efficiency.
The above object of the present invention can be achieved by the following technical solutions:
a coal mine dust-proof coal mine conveying device comprises a base, wherein a conveying device is arranged on one side, away from the ground, of the base, the conveying device is connected with a support through threads, away from one side of the base, a first motor is fixedly connected with the support, the axis direction of an output shaft of the first motor is vertically arranged, the output shaft of the first motor penetrates through the support, the first motor is fixedly connected with the support, the first motor is close to one end of the base, a first bevel gear is sleeved and fixedly connected with the base, the first bevel gear is meshed with a second bevel gear and a third bevel gear which are symmetrical to each other, the axis of the second bevel gear is coincided with the axis of the third bevel gear, the second bevel gear and the third bevel gear are respectively sleeved and fixedly connected with a first supporting column and a second supporting column, and one ends, away from each other, of the first supporting column and the second supporting column are rotatably connected with the support, first support column with the second support column overlaps respectively to be established and is connected with first sleeve and second sleeve rotationally, first sleeve with the second sleeve is kept away from one end difference fixedly connected with fourth bevel gear and fifth bevel gear each other, the fourth bevel gear with the fifth bevel gear meshes sixth bevel gear and seventh bevel gear respectively, the sixth bevel gear with seventh bevel gear difference fixed connection in first support column with the second support column, the sixth bevel gear with the seventh bevel gear overlaps respectively to be established and first carousel of fixedly connected with and second carousel, first carousel with the second carousel is kept away from the equal fixedly connected with sprinkler in first support column one side.
By adopting the technical scheme, through the first motor, the first bevel gear, the second bevel gear, the third bevel gear, the fourth bevel gear, the fifth bevel gear, the sixth bevel gear, the seventh bevel gear, the first support column, the second support column, the first sleeve, the second sleeve, the first turntable, the second turntable and the spraying device, the first turntable and the second turntable can rotate, so that the spraying devices on the first turntable and the second turntable rotate, the water flow spraying range is expanded, other places with more coal dust can be sprayed by water flow, the dust settling effect is prevented from being deteriorated due to the fact that the spraying range is too small, and the working efficiency is improved.
The present invention may be further configured in a preferred embodiment as: the conveying device comprises a conveying belt, one side of the ground, away from the base, is fixedly connected with a supporting plate and a second motor, the second motor is located on one side of the supporting plate, the axis of an output shaft of the second motor is horizontally arranged, the output shaft of the second motor penetrates through the supporting plate and is rotatably connected with the supporting plate and the supporting plate, an output shaft sleeve of the second motor is provided with a first belt wheel fixedly connected with, the supporting plate penetrates through a rotating shaft fixedly connected with, the axis direction of the rotating shaft is parallel to the axis direction of an output shaft of the second motor, the rotating shaft sleeve is provided with and rotatably connected with a second belt wheel, and the first belt wheel is engaged with the second belt wheel.
Through adopting above-mentioned technical scheme, through backup pad, second motor, first band pulley, second band pulley, pivot and the conveyer belt that sets up, avoid jolting at fortune coal in-process, improve the stationarity of fortune coal, can reduce operator's intensity of labour simultaneously, improve work efficiency.
The present invention may be further configured in a preferred embodiment as: the spraying device comprises a first sprayer and a second sprayer, wherein the first sprayer and the second sprayer are respectively fixedly connected with the first rotary table and the second rotary table, the first sprayer is close to a first water pipe fixedly connected with one side of the first supporting column, the second sprayer is close to a second water pipe fixedly connected with one side of the base, the supporting plate is far away from a first water tank fixedly connected with one side of the base and a second water tank, the first water pipe is fixedly connected with the first water tank, and the second water pipe is fixedly connected with the second water tank.
Through adopting above-mentioned technical scheme, through first shower nozzle, second shower nozzle, first water pipe, second water pipe, first water tank and the second water tank that sets up, need not artificially go to spray water, convenient to use has reduced operator's intensity of labour simultaneously, improves work efficiency.
The present invention may be further configured in a preferred embodiment as: one side of the base, which is far away from the ground, is rotatably connected with a roller.
Through adopting above-mentioned technical scheme, through the gyro wheel that sets up, the removal of the whole device of being convenient for improves the flexibility of device.
The present invention may be further configured in a preferred embodiment as: one side of the base, which is close to the ground, is fixedly connected with a plurality of telescopic rods, and when the idler wheels are in a motion state, the telescopic rods are all in a compression state.
Through adopting above-mentioned technical scheme, through the telescopic link that sets up, can go up and down the appointed height with the device, play the supporting role of removal to whole device simultaneously.
The present invention may be further configured in a preferred embodiment as: the base is kept away from ground one side fixedly connected with a plurality of strengthening ribs, and is a plurality of the strengthening rib is kept away from equal fixed connection in base one side in the backup pad.
Through adopting above-mentioned technical scheme, through the strengthening rib that sets up, avoid the water tank to push down to cause destruction to conveyer, play the supporting role to the support, alleviated the pressure of backup pad, improve the stability of device.
The present invention may be further configured in a preferred embodiment as: and door curtains are fixedly arranged at the two ends of the support.
Through adopting above-mentioned technical scheme, through the door curtain that sets up, at sprinkler during operation, prevent that the liquid that sprays out from spattering the outside, can prevent simultaneously that a large amount of coal dusts diffusion in fortune coal process from to the harm that operating personnel caused, effectively improve the dust fall effect.
To sum up, the utility model discloses a following at least one useful technological effect:
1. the rotary disc can rotate through the arrangement of the first motor, the first bevel gear, the second bevel gear, the third bevel gear, the fourth bevel gear, the fifth bevel gear, the sixth bevel gear, the seventh bevel gear, the first support column, the second support column, the first sleeve, the second sleeve, the first rotary disc, the second rotary disc and the spraying device, so that the spraying device on the rotary disc rotates, the water flow spraying range is expanded, other places with more coal dust can be sprayed by water flow, the dust fall effect is prevented from being poor due to the fact that the spraying range is too small, and the working efficiency is improved;
2. by the aid of the supporting plate, the second motor, the first belt wheel, the second belt wheel, the rotating shaft and the conveying belt, jolting is avoided in the coal conveying process, stability of coal conveying is improved, labor intensity of operators can be reduced, and working efficiency is improved;
3. through the first shower nozzle, second shower nozzle, first water pipe, second water pipe, first water tank and the second water tank that set up, need not artificially go to spray water, convenient to use has reduced operator's intensity of labour simultaneously, improves work efficiency.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a front view of FIG. 1;
fig. 3 is an enlarged view at a in fig. 1.
Reference numerals: 1. a base; 2. a support; 3. reinforcing ribs; 4. a first nozzle; 5. a first water tank; 6. A first water pipe; 7. a first turntable; 8. a fourth bevel gear; 9. a sixth bevel gear; 10. a first motor; 11. a first sleeve; 12. a second bevel gear; 13. a first bevel gear; 14. a third bevel gear; 15. A second sleeve; 16. a second turntable; 17. a second nozzle; 18. a fifth bevel gear; 19. a seventh bevel gear; 20. a second support column; 21. a second water tank; 22. a second water pipe; 23. a conveyor belt; 24. a first pulley; 25. a second motor; 26. a roller; 27. a telescopic rod; 28. a second pulley; 29. a support plate; 30. a door curtain; 31. a rotating shaft; 32. a first support column; 33. a conveying device; 34. a spraying device.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, in order to disclose a coal mine dust-proof coal mine conveying device, which comprises a base 1, a transmission device 33 is arranged on one side of the base 1 away from the ground, a support 2 is connected to one side of the transmission device 33 away from the base 1 through a thread, the support 2 meets certain strength, a first motor 10 is fixedly connected to one side of the support 2 away from the base 1, the axis of the output shaft of the first motor 10 is vertically arranged, the output shaft of the first motor 10 penetrates through the support 2, the first motor 10 is fixedly connected to the support 2, the output shaft of the first motor 10 can rotate on the support 2, a first bevel gear 13 is sleeved on one end of the first motor 10 close to the base 1 and is fixedly connected to the first motor, the first bevel gear 13 can rotate along with the rotation of the output shaft of the first motor 10, a second bevel gear 12 and a third bevel gear 14 which are symmetrical to each other are meshed with the first bevel gear 13, the second bevel gear 12 and the third bevel gear, the axes of the second bevel gear 12 and the third bevel gear 14 coincide, the second bevel gear 12 and the third bevel gear 14 are respectively sleeved with and rotatably connected with a first support column 32 and a second support column 20, the ends of the first support column 32 and the second support column 20 away from each other are both rotatably connected with the support 2, a gap is arranged between the first support column 32 and the second support column 20, the first support column 32 can rotate along with the rotation of the second bevel gear 12, the second support column 20 can rotate along with the rotation of the third bevel gear 14, as shown in fig. 3, the first support column 32 and the second support column 20 are respectively sleeved with and rotatably connected with a first sleeve 11 and a second sleeve 15, the first support column 32 and the second support column 20 respectively rotate around the first sleeve 11 and the second sleeve 15, the ends of the first sleeve 11 and the second sleeve 15 away from each other are respectively and fixedly connected with a fourth bevel gear 8 and a fifth bevel gear 18, a sixth bevel gear 9 and a seventh bevel gear 19 are respectively meshed with the fourth bevel gear 8 and the fifth bevel gear 18, the sixth bevel gear 9 and the seventh bevel gear 19 are respectively fixedly connected to a first support column 32 and a second support column 20, the sixth bevel gear 9 and the seventh bevel gear 19 can respectively rotate on the fourth bevel gear 8 and the fifth bevel gear 18 along with the rotation of the first support column 32 and the second support column 20, the sixth bevel gear 9 and the seventh bevel gear 19 are respectively sleeved and fixedly connected with a first rotating disc 7 and a second rotating disc 16, the first rotating disc 7 and the second rotating disc 16 can rotate along with the rotation of the sixth bevel gear 9 and the seventh bevel gear 19, spraying devices 34 are respectively fixedly connected to the sides of the first rotating disc 7 and the second rotating disc 16 far away from the first support column 32, and the spraying devices 34 can rotate along with the rotation of the first rotating disc 7 and the second rotating disc 16. Through the arrangement of the first motor 10, the first bevel gear 13, the second bevel gear 12, the third bevel gear 14, the fourth bevel gear 8, the fifth bevel gear 18, the sixth bevel gear 9, the seventh bevel gear 19, the first support column 32, the second support column 20, the first sleeve 11, the second sleeve 15, the first rotary disc 7, the second rotary disc 16 and the spraying device 34, the first rotary disc 7 and the second rotary disc 16 can rotate, so that the spraying device 34 on the first rotary disc 7 and the second rotary disc 16 rotates, the water flow spraying range is expanded, other places with more coal dust can be sprayed by water flow, the dust fall effect is prevented from being poor due to the fact that the spraying range is too small, and the working efficiency is improved.
As shown in fig. 1 and fig. 2, the transmission device 33 includes a transmission belt 23, the transmission belt 23 is made of rubber, one side of the base 1 away from the ground is fixedly connected with a support plate 29 and a second motor 25, the second motor 25 is located on one side of the support plate 29, an axial direction of an output shaft of the second motor 25 is horizontally arranged, the output shaft of the second motor 25 penetrates through the support plate 29 and is rotatably connected with the support plate 29, the second motor 25 can rotate on the support plate 29, an output shaft of the second motor 25 is sleeved and fixedly connected with a first pulley 24, the first pulley 24 can rotate along with the rotation of the output shaft of the second motor 25, the support plate 29 penetrates through and is fixedly connected with a rotation shaft 31, an axial direction of the rotation shaft 31 is consistent with an axial direction of the output shaft of the second motor 25, the rotation shaft 31 is sleeved and rotatably connected with a second pulley 28, the second pulley 28 can rotate around the rotation shaft 31, both the first pulley 24 and the second pulley 28 are engaged with the transmission belt 23, the first belt wheel 24 and the second belt wheel 28 rotate to drive the conveying belt 23 to translate. Through the supporting plate 29, the second motor 25, the first belt wheel 24, the second belt wheel 28, the rotating shaft 31 and the conveying belt 23, jolting is avoided in the coal conveying process, the stability of coal conveying is improved, meanwhile, the labor intensity of operators can be reduced, and the working efficiency is improved. Sprinkler 34 includes first shower nozzle 4 and second shower nozzle 17, first shower nozzle 4 and second shower nozzle 17 are fixed connection in first carousel 7 and second carousel 16 respectively, it has a plurality of apertures to open on first shower nozzle 4 and the second shower nozzle 17, be used for spouting vaporific liquid, first shower nozzle 4 is close to first support column 32 one side fixedly connected with first water pipe 6, second shower nozzle 17 is close to base 1 one side fixedly connected with second water pipe 22, first water pipe 6 and second water pipe 22 all adopt the rubber material, it is scalable to have certain elasticity, base 1 one side fixedly connected with first water tank 5 and second water tank 21 are kept away from to backup pad 29, first water tank 5 and second water tank 21 satisfy certain intensity and rigidity, first water pipe 6 fixed connection in first water tank 5, second water pipe 22 fixed connection in second water tank 21. Through the first shower nozzle 4, the second shower nozzle 17, the first water pipe 6, the second water pipe 22, the first water tank 5 and the second water tank 21 that set up, need not artificially go to spray water, convenient to use has reduced operator's intensity of labour simultaneously, improves work efficiency. The side of the base 1 away from the ground is rotatably connected with a roller 26. The rollers 26 are arranged to facilitate the movement of the whole device and improve the flexibility of the device. One side of the base 1 close to the ground is fixedly connected with a plurality of telescopic rods 27, when the roller 26 is in a motion state, the telescopic rods 27 are all in a compression state, the telescopic rods 27 are electric telescopic rods 27, and the number of the telescopic rods 27 is four. Through the telescopic link 27 that sets up, can rise the device to appointed height, play the supporting role of removal to whole device simultaneously. Base 1 keeps away from two strengthening ribs 3 of ground one side fixedly connected with, and two strengthening ribs 3 all adopt the material that intensity is big, and two equal fixed connection of strengthening rib 3 are in backup pad 29. Through the strengthening rib 3 that sets up, avoid first water tank 5 and second water tank 21 to push down to cause destruction to conveyer 33, play the supporting role to support 2, alleviated the pressure of backup pad 29, improve the stability of device. Both ends of the bracket 2 are fixedly provided with door curtains 30, and the door curtains 30 are made of transparent materials and have flexibility. Through the door curtain 30 that sets up, at 34 during operations of sprinkler, prevent that the liquid that sprays from spattering the outside, can prevent simultaneously that a large amount of coal dusts of fortune coal in-process from diffusing the harm that causes operating personnel, effectively improve the dust fall effect.
The implementation principle of the embodiment is as follows: in use, the device is moved to a designated position by the roller 26, the device is lifted to a designated height by the telescopic rod 27, the door curtain 30 is put down, the second motor 25 is started, the output shaft of the second motor 25 drives the first belt pulley 24 to rotate, the first belt pulley 24 drives the conveyor belt 23 to rotate around the second belt pulley 28, the first motor 10 is started, the output shaft of the first motor 10 drives the first bevel gear 13 to rotate, the first bevel gear 13 drives the second bevel gear 12 and the third bevel gear 14 to rotate, the second bevel gear 12 drives the first support column 32 and the sixth bevel gear 9 to rotate, the sixth bevel gear 9 rotates around the fourth bevel gear 8, the first rotary disc 7 drives the spraying device 34 on the first rotary disc 7 to rotate along with the rotation of the sixth bevel gear 9, the third bevel gear 14 drives the second support column 20 and the seventh bevel gear 19 to rotate, and the seventh bevel gear 19 rotates around the fifth bevel gear 18, the second turntable 16 drives the spraying device 34 to rotate along with the rotation of the seventh bevel gear 19, the water flow spraying range can be expanded, other places with more coal dust can also be sprayed with water flow, the dust falling effect is prevented from being deteriorated due to the fact that the spraying range is too small, the working efficiency is improved, and after the work is finished, the device is cleaned and is folded.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (7)

1. The utility model provides a colliery dust protected colliery conveyor, includes base (1), its characterized in that, base (1) is kept away from ground one side and is equipped with conveyer (33), conveyer (33) are kept away from base (1) one side threaded connection has support (2), support (2) are kept away from, base (1) one side fixedly connected with first motor (10), the axis of first motor (10) output shaft is vertical to be set up, the output shaft of first motor (10) runs through support (2) just first motor (10) with support (2) fixed connection, first motor (10) are close to base (1) pot head is established and fixedly connected with first bevel gear (13), first bevel gear (13) meshing has second bevel gear (12) and third bevel gear (14) of mutual symmetry, second bevel gear (12) with the axis coincidence of third bevel gear (14), the second bevel gear (12) and the third bevel gear (14) are respectively sleeved with a first fixedly connected support column (32) and a second support column (20), the first support column (32) and the second support column (20) are both rotationally connected with the support (2), the first support column (32) and the second support column (20) are respectively sleeved with a first sleeve (11) and a second sleeve (15), the first sleeve (11) and the second sleeve (15) are respectively far away from one end of the second sleeve (15) and are respectively fixedly connected with a fourth bevel gear (8) and a fifth bevel gear (18), the fourth bevel gear (8) and the fifth bevel gear (18) are respectively engaged with a sixth bevel gear (9) and a seventh bevel gear (19), the sixth bevel gear (9) and the seventh bevel gear (19) are respectively fixedly connected with the first support column (32) and the second support column (20), the sixth bevel gear (9) and the seventh bevel gear (19) are sleeved and fixedly connected with a first rotary disc (7) and a second rotary disc (16), and one sides of the first rotary disc (7) and the second rotary disc (16) far away from the first support column (32) are fixedly connected with spraying devices (34).
2. The coal mine dust-proof coal mine conveying device according to claim 1, wherein the conveying device (33) comprises a conveying belt (23), a supporting plate (29) and a second motor (25) are fixedly connected to one side, far away from the ground, of the base (1), the second motor (25) is located on one side of the supporting plate (29), the axis direction of an output shaft of the second motor (25) is horizontally arranged, the output shaft of the second motor (25) penetrates through the supporting plate (29) and is rotatably connected with the supporting plate (29), a first belt wheel (24) is sleeved and fixedly connected with the output shaft of the second motor (25), a rotating shaft (31) penetrates through the supporting plate (29) and is fixedly connected with the rotating shaft (31), the axis direction of the rotating shaft (31) is parallel to the axis direction of the output shaft of the second motor (25), and a second belt wheel (28) is sleeved and rotatably connected with the rotating shaft (31), the first pulley (24) and the second pulley (28) are both engaged with the conveyor belt (23).
3. The coal mine dust-proof coal mine conveying device according to claim 2, the spraying device (34) comprises a first spray head (4) and a second spray head (17), the first spray head (4) and the second spray head (17) are respectively and fixedly connected with the first rotary disc (7) and the second rotary disc (16), one side of the first nozzle (4) close to the first supporting column (32) is fixedly connected with a first water pipe (6), one side of the second spray head (17) close to the base (1) is fixedly connected with a second water pipe (22), one side of the supporting plate (29) far away from the base (1) is fixedly connected with a first water tank (5) and a second water tank (21), the first water pipe (6) is fixedly connected to the first water tank (5), and the second water pipe (22) is fixedly connected to the second water tank (21).
4. The coal mine dust-proof coal mine conveying device according to claim 1, characterized in that a roller (26) is rotatably connected to one side of the base (1) far away from the ground.
5. The coal mine dust-proof coal mine conveying device according to claim 4, characterized in that a plurality of telescopic rods (27) are fixedly connected to one side of the base (1) close to the ground, and when the rollers (26) are in a moving state, the telescopic rods (27) are in a compressed state.
6. The coal mine dust-proof coal mine conveying device according to claim 2, characterized in that a plurality of reinforcing ribs (3) are fixedly connected to the side of the base (1) far away from the ground, and a plurality of reinforcing ribs (3) are fixedly connected to the supporting plate (29) at the side of the base (1) far away from the base.
7. The coal mine dust-proof coal mine conveying device according to claim 1, wherein door curtains (30) are fixedly installed at both ends of the support (2).
CN202022704405.7U 2020-11-20 2020-11-20 Colliery dust protected colliery conveyor Expired - Fee Related CN214030613U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022704405.7U CN214030613U (en) 2020-11-20 2020-11-20 Colliery dust protected colliery conveyor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022704405.7U CN214030613U (en) 2020-11-20 2020-11-20 Colliery dust protected colliery conveyor

Publications (1)

Publication Number Publication Date
CN214030613U true CN214030613U (en) 2021-08-24

Family

ID=77361000

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202022704405.7U Expired - Fee Related CN214030613U (en) 2020-11-20 2020-11-20 Colliery dust protected colliery conveyor

Country Status (1)

Country Link
CN (1) CN214030613U (en)

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Granted publication date: 20210824

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