CN219840683U - A ventilation unit for colliery operation in pit - Google Patents
A ventilation unit for colliery operation in pit Download PDFInfo
- Publication number
- CN219840683U CN219840683U CN202321214053.4U CN202321214053U CN219840683U CN 219840683 U CN219840683 U CN 219840683U CN 202321214053 U CN202321214053 U CN 202321214053U CN 219840683 U CN219840683 U CN 219840683U
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- Prior art keywords
- ventilation
- locking
- main body
- coal mine
- cavity
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- 238000009423 ventilation Methods 0.000 title claims abstract description 142
- 230000007246 mechanism Effects 0.000 claims abstract description 30
- 210000000078 claw Anatomy 0.000 claims abstract description 24
- 239000003245 coal Substances 0.000 claims abstract description 21
- 230000005540 biological transmission Effects 0.000 claims abstract description 18
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 230000009471 action Effects 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Air-Flow Control Members (AREA)
Abstract
The utility model provides a ventilation device for underground operation of a coal mine, which comprises a ventilation main body, two sets of connecting mechanisms and an on-off valve, wherein the ventilation main body can be fixedly arranged on the side wall of the coal mine, the two sets of connecting mechanisms are arranged at two ends of the ventilation main body and are used for being connected with the ventilation pipe, and the on-off valve is arranged on the ventilation main body; the connecting mechanism comprises a locking disc rotatably embedded in the ventilation main body, a plurality of clamping claws slidably mounted on the locking disc, an operating bolt in threaded connection with the ventilation main body, and a transmission mechanism for connecting the operating bolt with the locking disc, wherein the locking disc rotates under the action of the transmission mechanism through rotating the operating bolt so that the clamping claws extend into the ventilation cavity or retract into the side wall of the ventilation cavity. According to the utility model, the claw can act to clamp the ventilation pipe by rotating the operation bolt so as to prevent the ventilation pipe from falling off, and the claw can retract by rotating the operation bolt reversely so as to disconnect the ventilation device from the ventilation pipe, so that the ventilation pipe is convenient to detach, simple to operate and labor-saving.
Description
Technical Field
The utility model belongs to the technical field of underground ventilation of coal mines, and particularly relates to a ventilation device for underground operation of a coal mine.
Background
The coal mine ventilation equipment is an important equipment which is used for conveying enough fresh air underground to increase the concentration of oxygen in a mine, meet the requirement of workers on oxygen, dilute harmful gases and dust such as carbon monoxide, carbon dioxide, nitrogen dioxide, sulfur dioxide, hydrogen sulfide, methane and the like in the well, maintain normal production conditions, adjust underground climate, create good working environment and ensure the safety and physical health of the workers.
CN202211016634.7 discloses a ventilation device for underground operation of coal mine, wherein two adjacent hoses are connected by a connecting pipe to form a ventilation pipeline, the connecting pipe is fixedly installed on the side wall of the mine, and the connecting pipe is used for bearing ventilation components and providing fresh air for the ventilation components. When the worker needs to adjust the ventilation position according to the excavation condition of the roadway, the ventilation device must be disassembled and reinstalled after the installation is completed (i.e., the ventilation device must be disassembled and reassembled from the roadway). Both ends of the connecting pipe of the aforementioned publication are all connected with two hoses through threaded ports, when the ventilating device is disassembled, the connecting pipe and the hoses need to be connected or disconnected by rotating the hoses and the threaded ports thereon, but when the diameter of the ventilating pipeline is large, the manual rotation of the connecting hoses and the threaded ports thereon is laborious, so that the ventilating device is inconvenient to disassemble (i.e., disassemble and reassemble).
Disclosure of Invention
The utility model aims to solve the technical problems in the prior art, and aims to provide a ventilation device for underground operation of a coal mine.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the ventilation device comprises a ventilation main body, two sets of connecting mechanisms and an on-off valve, wherein the ventilation main body can be fixedly arranged on the side wall of a mine and is provided with a ventilation cavity penetrating through the ventilation main body along the length direction of the ventilation pipe; the connecting mechanism comprises a locking disc which is rotatably embedded in the side wall of the ventilation cavity and is coaxially arranged with the ventilation pipe, a plurality of clamping claws which are slidably arranged on the end face of the locking disc and are circumferentially distributed at intervals along the locking disc, an operating bolt which is inserted into the ventilation main body and is in threaded connection with the locking main body, and a transmission mechanism which is used for connecting the operating bolt and the locking disc in a transmission mode and is arranged in the side wall of the ventilation cavity, wherein the locking disc can rotate under the transmission action of the transmission mechanism through rotating the operating bolt, so that the clamping claws can synchronously extend into the ventilation cavity or retract into the side wall of the ventilation cavity.
According to the technical scheme, the ventilation cavity can be plugged or opened through the on-off valve, so that the ventilation pipe is cut off or communicated. The claw can be operated to clamp the ventilation pipe by rotating the operation bolt to prevent the ventilation pipe from falling off, and the claw can be retracted by rotating the operation bolt reversely to disconnect the ventilation device from the ventilation pipe; and the operation bolt has a self-locking function, so that the clamping jaw can firmly clamp the ventilation pipe.
In a preferred embodiment of the utility model, the transmission mechanism comprises a drive bevel gear which is arranged in the side wall of the ventilation cavity, is coaxial with the operating bolt and is fixedly connected with the periphery, the drive bevel gear is connected with the operating bolt in an axial sliding way, and the outer wall of the locking disc is provided with bevel teeth which are meshed with the drive bevel gear.
According to the technical scheme, the transmission mechanism can convert the rotary motion of the operating bolt into the rotary motion of the locking disc through the driving bevel gear and the bevel gear meshed with the driving bevel gear, so that the clamping jaw can operate to clamp or loosen the ventilation pipe, and the structure is simple and the operation is reliable.
In a preferred embodiment of the utility model, the end face of the locking disk has a sliding groove which is arranged obliquely in the circumferential direction and in the radial direction of the locking disk, and the pawl is arranged in the sliding groove in a clamped manner and can slide in the sliding groove.
In a preferred embodiment of the utility model, the side wall of the ventilation chamber has a relief groove for the sliding of the jaws.
In a preferred embodiment of the utility model, the on-off valve comprises a closing plate which is rotatably mounted in the ventilation chamber and can close the ventilation chamber, and the ventilation body is provided with a locking mechanism which is connected with the closing plate and locks the position of the closing plate.
According to the technical scheme, the ventilation cavity can be blocked or opened by rotating the sealing plate, and then the locking sealing plate is locked to keep the on-off valve in an opened or closed state.
In another preferred embodiment of the utility model, the locking mechanism comprises a screw rod in threaded connection with the ventilation main body, the upper end of the screw rod extends out of the ventilation main body, the lower end of the screw rod is fixedly connected with the upper end of the sealing plate in the circumferential direction, and the screw rod is connected with the sealing plate in an axial sliding mode.
According to the technical scheme, the locking of the position of the sealing plate is realized by utilizing the self-locking function of the screw rod, and the structure is simple.
In another preferred embodiment of the utility model, a rotating disk is fixedly connected to the upper end of the screw.
In another preferred embodiment of the utility model, a limiting plate is fixedly connected to the screw, a connecting hole is formed in the limiting plate, a plurality of locking holes corresponding to the connecting hole are formed in the ventilation main body, and the locking rod sequentially penetrates through the connecting hole and the locking hole from top to bottom.
According to the technical scheme, the screw is circumferentially limited by the limiting plate and the locking rod, so that the screw can be prevented from loosening and the sealing plate is prevented from shifting.
In another preferred embodiment of the present utility model, one of the connection hole and the locking hole is a screw hole, and the locking lever is a locking bolt capable of being screw-coupled with the connection hole or the locking hole.
According to the technical scheme, the locking bolt is in threaded connection with the connecting hole or the locking hole, so that the locking rod is prevented from being lost when the ventilation device is disassembled.
In another preferred embodiment of the present utility model, the lower end of the closing plate is rotatably connected to the ventilation body by a rotation pin; and/or the two sides of the ventilation main body are fixedly connected with fixing plates used for being connected with the side wall of the mine.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic perspective view of a ventilation device for underground coal mine operation according to an embodiment of the present utility model.
FIG. 2 is a schematic diagram of a cross-sectional front view of an embodiment of a ventilation device for use in coal mine downhole operations in conjunction with a ventilation tube.
FIG. 3 is a schematic side cross-sectional structural view of a ventilation device for use in coal mine downhole operations according to an embodiment.
Fig. 4 is a partial enlarged view at a in fig. 2.
Fig. 5 is a schematic view of a structure in which a claw is provided at an end face of a lock disk in the embodiment.
Reference numerals in the drawings of the specification include: the ventilating pipe 1, the ventilating body 2, the ventilating cavity 3, the fixed plate 4, the rectangular bulge 5, the limiting plate 6, the connecting hole 7, the rotating disc 8, the closing plate 9, the rotating pin 10, the operating bolt 11, the driving bevel gear 12, the locking disc 13, the inner groove 14, the clamping jaw 15, the sliding groove 16, the screw 17, the locking rod 18, the locking hole 19, the slot 20, the inserting column 21, the clamping groove 22, the annular groove 23 and the on-off valve 24.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that the terms "longitudinal," "transverse," "vertical," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the utility model.
In the description of the present utility model, unless otherwise specified and defined, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, mechanical or electrical, or may be in communication with each other between two elements, directly or indirectly through intermediaries, as would be understood by those skilled in the art, in view of the specific meaning of the terms described above.
The utility model provides a ventilation device for underground operation of a coal mine, which is detachably arranged on a ventilation pipe 1. As shown in fig. 1 and 2, in a preferred embodiment, the ventilation device comprises a ventilation main body 2 which can be fixedly installed on the side wall of a mine and is provided with a ventilation cavity 3 penetrating along the length direction of a ventilation pipe 1, two sets of connecting mechanisms which are respectively arranged at two ends of the ventilation main body 2 and are used for being connected with the ventilation pipe 1, and an on-off valve 24 which is installed on the ventilation main body 2 and is used for closing or opening the ventilation cavity 3, wherein the ventilation pipe 1 can be inserted into the ventilation cavity 3, and the outer wall of the ventilation pipe 1 is matched with the inner wall of the ventilation cavity 3 and is fastened through the connecting mechanisms. The two sides of the ventilation main body 2 are fixedly connected with fixing plates 4 used for being connected with the mine side wall, and bolts are connected with the mine side wall through the fixing plates 4 so as to fix the ventilation device on the mine side wall.
As shown in fig. 2, 4 and 5, the connecting mechanism comprises a locking disc 13 rotatably embedded in the side wall of the ventilation cavity 3 and coaxially arranged with the ventilation pipe 1, a plurality of claws 15 slidably mounted on the end surface of the locking disc 13 and circumferentially spaced along the locking disc 13, an operating bolt 11 inserted into the ventilation main body 2 and in threaded connection with the locking disc, and a transmission mechanism which is arranged in the side wall of the ventilation cavity 3 and is used for connecting the operating bolt 11 and the locking disc 13 in a transmission manner, wherein the locking disc 13 can rotate under the transmission effect of the transmission mechanism by rotating the operating bolt 11, so that the claws 15 can synchronously extend into the ventilation cavity 3 or retract into the side wall of the ventilation cavity 3, for example, four claws 15 are circumferentially uniformly arranged.
By adopting the technical scheme, the ventilation cavity 3 can be blocked or opened by arranging the on-off valve 24 so as to cut off or communicate with the ventilation pipe 1. The clamping claws 15 can be operated by rotating the operation bolts 11, and when a plurality of clamping claws 15 extend out of the inner surface of the side wall of the ventilation cavity 3, the ventilation pipe 1 can be clamped to prevent the ventilation pipe from falling off; when the claws 15 are retracted into the side wall of the ventilation cavity 3, the ventilation device can be disconnected from the ventilation pipe 1, and the operation is simple and labor-saving.
As shown in fig. 4, it is preferable that the vent pipe 1 has an annular groove 23 on its outer wall, and the claw 15 can be inserted into the annular groove 23 when the claw 15 protrudes into the vent chamber 3, so as to increase the fastening of the vent apparatus to the vent pipe 1.
As shown in fig. 4 and 5, in the present embodiment, the end surface of the lock disk 13 has a slide groove 16, the slide groove 16 is provided obliquely in the circumferential direction and the radial direction of the lock disk 13, and the claw 15 is caught in the slide groove 16 and is slidable in the slide groove 16; the ventilation chamber 3 has a relief inner groove 14 in its side wall for the jaws 15 to slide. When the locking disk 13 rotates, the claws 15 slide in the slide grooves 16, and since the slide grooves 16 are inclined grooves, the rotation of the locking disk 13 moves the claws 15 radially to protrude outside the inner surface of the side wall of the ventilation chamber 3 or retract into the side wall of the ventilation chamber 3.
As shown in fig. 4, in the present utility model, the transmission mechanism includes a drive bevel gear 12 provided in a sidewall of the ventilation chamber 3 coaxially with the operation bolt 11 and fixedly connected circumferentially, an axis of the drive bevel gear 12 being provided perpendicular to an axis of the ventilation pipe 1; the drive bevel gear 12 is axially slidably connected with the operation bolt 11, for example, a chute is formed on the outer wall of the operation bolt 11, and a slide column which is clamped in the chute and can slide in the chute is formed on the inner wall of the drive bevel gear 12; the outer wall of the locking disk 13 has bevel teeth that mesh with the drive bevel gear 12.
One rotates the operating bolt 11, the operating bolt 11 rotates the drive bevel gear 12, and simultaneously the operating bolt 11 moves axially relative to the drive bevel gear 12, the drive bevel gear 12 rotates to rotate the locking disc 13, and the locking disc 13 rotates to radially move the clamping jaw 15 to clamp or unclamp the ventilation pipe 1.
As shown in fig. 4, in the present utility model, a catching groove 22 is provided in a sidewall of the ventilation chamber 3, one side of the drive bevel gear 12 is inserted into the catching groove 22 to be supported and limited by the catching groove 22, the other side of the drive bevel gear 12 is engaged with the bevel teeth of the locking disk 13 to be supported and limited by the locking disk 13, thereby installing the drive bevel gear 12 in the sidewall of the ventilation chamber 3.
As shown in fig. 1 to 3, in the present utility model, the on-off valve 24 includes a closing plate 9 rotatably installed in the ventilation chamber 3 to be able to close the ventilation chamber 3, and a sealing strip is provided on the peripheral surface of the closing plate 9 to prevent ventilation leakage. The lower end of the closing plate 9 is rotatably connected with the ventilation main body 2 through a rotation pin 10, a locking mechanism which is connected with the upper end of the closing plate 9 and locks the position of the closing plate 9 is arranged on the ventilation main body 2, for example, a rectangular bulge 5 which protrudes upwards is arranged at the middle position of the ventilation main body 2, and the locking mechanism is arranged on the rectangular bulge 5.
Specifically, the locking mechanism comprises a screw rod 17 in threaded connection with the rectangular protrusion 5 of the ventilation main body 2, the upper end of the screw rod 17 extends out of the rectangular protrusion 5, and the upper end of the screw rod 17 is fixedly connected with a rotating disc 8. The lower end of the screw 17 is fixedly connected with the upper end of the closing plate 9 in the circumferential direction, and the screw 17 is connected with the closing plate 9 in an axial sliding manner, for example, the screw 17 is provided with a slot 20 with an opening at the lower end, the slot 20 is a non-circular slot, and the upper end of the closing plate 9 is provided with a plug post 21 which is inserted into the slot 20 and matched with the slot.
The screw 17 is rotated by rotating the rotating disc 8, and under the action of the slot 20 and the plug post 21, the screw 17 moves axially relative to the closing plate 9 at the same time, and the screw 17 rotates to rotate the closing plate 9 to block or open the ventilation cavity 3, thereby cutting off and communicating the ventilation pipes 1 at both ends of the ventilation device.
As shown in fig. 1 and 3, in another preferred embodiment, a limiting plate 6 is fixedly connected to a screw 17, a connecting hole 7 is formed in the limiting plate 6, a plurality of locking holes 19 corresponding to the connecting hole 7 are formed in the rectangular protrusion 5 of the ventilation main body 2, and the locking rod 18 sequentially penetrates through the connecting hole 7 and the locking holes 19 from top to bottom. Specifically, a plurality of locking holes 19 are circumferentially spaced within 90 ° of the outer circumference of the screw 17, for example, when the screw 17 is rotated to 0 °, the closing plate 9 is completely closed, and the locking rod 18 is inserted into the corresponding locking hole 19 of 0 ° to lock the position of the closing plate 9; when the screw 17 rotates to 90 degrees, the closing plate 9 is completely opened, and the locking rod 18 is inserted into the corresponding locking hole 19 of 90 degrees to lock the position of the closing plate 9; when the screw 17 is rotated to a range of 0 ° -90 °, the closing plate 9 is partially opened, and the locking lever 18 is inserted into the corresponding locking hole 19 of 0 ° to lock the position of the closing plate 9.
Further preferably, one of the connection hole 7 and the locking hole 19 is a screw hole, and the locking lever 18 is a locking bolt capable of being screw-coupled with the connection hole 7 or the locking hole 19. When the connecting hole 7 is a threaded hole, the locking rod 18 is in threaded connection with the connecting hole 7, and when the position of the closing plate 9 needs to be locked, the lower end of the locking rod 18 is inserted into the corresponding locking hole 19 by rotating the locking rod 18; when the locking hole 19 is a threaded hole, the locking rod 18 is inserted into the connecting hole 7 and is in loose fit with the connecting hole, and when the position of the closing plate 9 needs to be locked, the lower end of the locking rod 18 is in threaded connection with the corresponding locking hole 19 by rotating the locking rod 18.
In the description of the present specification, reference to the terms "preferred implementation," "one embodiment," "some embodiments," "example," "a particular example" or "some examples" and the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. The ventilation device for underground coal mine operation is detachably arranged on a ventilation pipe and is characterized by comprising a ventilation main body, two sets of connecting mechanisms and an on-off valve, wherein the ventilation main body can be fixedly arranged on the side wall of a mine and is provided with a ventilation cavity penetrating through the ventilation pipe in the length direction, the two sets of connecting mechanisms are arranged at two ends of the ventilation main body and are used for being connected with the ventilation pipe, the on-off valve is arranged on the ventilation main body and is used for closing or opening the ventilation cavity, the ventilation pipe can be inserted into the ventilation cavity, and the outer wall of the ventilation pipe is matched with the inner wall of the ventilation cavity;
the connecting mechanism comprises a locking disc which is rotatably embedded in the side wall of the ventilation cavity and is coaxially arranged with the ventilation pipe, a plurality of claws which are slidably arranged on the end face of the locking disc and are circumferentially distributed at intervals along the locking disc, an operation bolt which is inserted into the ventilation main body and is in threaded connection with the locking disc, and a transmission mechanism which is connected with the operation bolt and the locking disc in a transmission manner and is arranged in the side wall of the ventilation cavity, wherein the locking disc can rotate under the transmission effect of the transmission mechanism through rotating the operation bolt, so that the claws can synchronously extend into the ventilation cavity or retract into the side wall of the ventilation cavity.
2. A ventilating device for underground coal mine operation according to claim 1, wherein the transmission mechanism comprises a drive bevel gear which is arranged in the side wall of the ventilating cavity, is coaxial with the operation bolt and is fixedly connected with the periphery of the operation bolt, the drive bevel gear is connected with the operation bolt in an axial sliding mode, and the outer wall of the locking disc is provided with bevel teeth meshed with the drive bevel gear.
3. A ventilating device for underground coal mine operation according to claim 1, wherein the end face of the locking plate is provided with a sliding groove, the sliding groove is obliquely arranged along the circumferential direction and the radial direction of the locking plate, and the claw is clamped in the sliding groove and can slide in the sliding groove.
4. A ventilating device for coal mine downhole operation according to claim 1, wherein the ventilating cavity has a relief inner groove in a side wall thereof for sliding of the claw.
5. A ventilation device for coal mine downhole operation according to any one of claims 1-4, wherein the on-off valve comprises a closing plate rotatably mounted in the ventilation chamber and capable of closing the ventilation chamber, and the ventilation body is mounted with a locking mechanism connected with the closing plate and locking the position of the closing plate.
6. A ventilating device for coal mine downhole operation according to claim 5, wherein the locking mechanism comprises a screw threadedly connected to the ventilating body, an upper end of the screw extending out of the ventilating body, a lower end of the screw being fixedly connected to an upper end of the closing plate in a circumferential direction, and the screw being axially slidably connected to the closing plate.
7. A ventilating device for underground coal mine operations according to claim 6, wherein the upper end of the screw is fixedly connected with a rotating disc.
8. The ventilation device for underground coal mine operation according to claim 6, wherein the screw is fixedly connected with a limiting plate, the limiting plate is provided with a connecting hole, the ventilation main body is provided with a plurality of locking holes corresponding to the connecting hole, and the locking rod sequentially penetrates through the connecting hole and the locking hole from top to bottom.
9. A ventilating device for coal mine downhole operations according to claim 8, wherein one of the connection hole and the locking hole is a screw hole, and the locking lever is a locking bolt threadably connected to the connection hole or the locking hole.
10. A ventilation device for coal mine downhole operation as claimed in claim 5, wherein the lower end of the closing plate is rotatably connected with the ventilation body by a rotation pin;
and/or the two sides of the ventilation main body are fixedly connected with fixing plates used for being connected with the side wall of the mine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321214053.4U CN219840683U (en) | 2023-05-19 | 2023-05-19 | A ventilation unit for colliery operation in pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321214053.4U CN219840683U (en) | 2023-05-19 | 2023-05-19 | A ventilation unit for colliery operation in pit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219840683U true CN219840683U (en) | 2023-10-17 |
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ID=88304654
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321214053.4U Active CN219840683U (en) | 2023-05-19 | 2023-05-19 | A ventilation unit for colliery operation in pit |
Country Status (1)
| Country | Link |
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| CN (1) | CN219840683U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117360357A (en) * | 2023-12-07 | 2024-01-09 | 山西省长治经坊煤业有限公司 | Underground crawler-type coal mine car |
-
2023
- 2023-05-19 CN CN202321214053.4U patent/CN219840683U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117360357A (en) * | 2023-12-07 | 2024-01-09 | 山西省长治经坊煤业有限公司 | Underground crawler-type coal mine car |
| CN117360357B (en) * | 2023-12-07 | 2024-02-09 | 山西省长治经坊煤业有限公司 | Underground crawler-type coal mine car |
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