CN115110950A - High-power coal seam slotting device antiskid structure - Google Patents
High-power coal seam slotting device antiskid structure Download PDFInfo
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- CN115110950A CN115110950A CN202210848473.1A CN202210848473A CN115110950A CN 115110950 A CN115110950 A CN 115110950A CN 202210848473 A CN202210848473 A CN 202210848473A CN 115110950 A CN115110950 A CN 115110950A
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- rotating shaft
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- grooved wheel
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
- E21C25/56—Slitting by cutter cables or cutter chains or by tools drawn along the working face by cables or the like, in each case guided parallel to the face, e.g. by a conveyor or by a guide parallel to a conveyor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C31/00—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam
- E21C31/02—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam for cutting or breaking-down devices
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/24—Remote control specially adapted for machines for slitting or completely freeing the mineral
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
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- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
本发明提供一种大功率煤层割缝装置防滑结构，属于煤层割缝机技术领域，包括基座，基座上通过轴架转动安装有主轴，主轴的前端安装有第一槽型轮，位于主轴外侧的基座上通过轴架转动安装有第一转轴、第二转轴和第三转轴，且呈三角形分布，第一转轴和主轴之间通过轴体上的齿部啮合实现同步转动，第一转轴、第二转轴和第三转轴的后端通过传动链或者传动带或者齿轮实现同步传动，第二转轴和第三转轴的前端分别安装有与第一槽型轮的传动半径相同的第二槽型轮和第三槽型轮，切割绳索由上至下依次绕过第二槽型轮、第一槽型轮和第三槽型轮。本发明不仅能有效避免切割绳索的打滑现象，而且也能够避免打滑带来的槽型轮异常磨损的情况。
The invention provides an anti-skid structure for a high-power coal seam slitting device, which belongs to the technical field of coal seam slitting machines. The first rotating shaft, the second rotating shaft and the third rotating shaft are rotated and installed on the outer base through the pedestal, and they are distributed in a triangular shape. , The rear ends of the second rotating shaft and the third rotating shaft realize synchronous transmission through a transmission chain, a transmission belt or a gear, and the front ends of the second rotating shaft and the third rotating shaft are respectively installed with a second grooved wheel with the same transmission radius as the first grooved wheel. And the third grooved wheel, the cutting rope goes around the second grooved wheel, the first grooved wheel and the third grooved wheel sequentially from top to bottom. The invention can not only effectively avoid the slipping phenomenon of the cutting rope, but also can avoid the abnormal wear of the grooved wheel caused by the slipping.
Description
Technical Field
The invention relates to the technical field of seam cutting machines, in particular to an anti-skid structure of a high-power seam cutting device.
Background
With the development of coal mining technology, a frontier technology for performing slotting and permeability increasing on a coal seam by adopting a rope cutting (also called rope saw cutting) mode appears at present, such as a rope saw cutting device and a coal seam gas permeability increasing and pressure relieving method which are invented in patent application No. CN202010944644.1, and a slotting device for coal seam gas control which is invented in patent application No. CN 202210459835.8.
Although the coal seam slotting equipment adopting the rope for cutting can slot the coal seam theoretically, the technology is not mature, and the coal seam slotting equipment is not actually applied in the coal mine industry at present. The span of the underground roadway is large, and a high-power driving wheel is needed to apply the rope cutting to the permeability increase of the coal bed. However, because the power side of the rope in the existing rope slotting equipment adopts a single driving wheel driving mode, the wrapping angle of the rope on the driving wheel is limited, and for the complex coal seam working condition with gravel or ultrahigh ground pressure, the cutting rope of the existing high-power slotting machine is easy to slip in the cutting process, so that the slotting efficiency is reduced, the abnormal abrasion of the driving wheel is caused, and the application of rope cutting in the coal seam permeability increasing is limited.
Disclosure of Invention
In view of the above, the invention provides an anti-skid structure of a high-power coal seam slotting device, wherein three synchronously-driven grooved wheels are adopted on the power side of a cutting rope, so that the total winding wrap angle and the total contact area of the cutting rope are greatly increased, the friction force between the cutting rope and the grooved wheels is further increased, the slipping phenomenon of the cutting rope can be effectively avoided, and the abnormal abrasion of the grooved wheels caused by slipping can be avoided.
In order to solve the technical problems, the invention provides an anti-skid structure of a high-power coal seam slotting device, which comprises a base, wherein a main shaft is rotatably arranged on the base through a shaft bracket, the rear end of the main shaft is a power input end, a first groove-shaped wheel is arranged at the front end of the main shaft, a first rotating shaft, a second rotating shaft and a third rotating shaft are rotatably arranged on the base positioned outside the main shaft through the shaft bracket, the first rotating shaft, the second rotating shaft and the third rotating shaft are distributed in a triangular shape, the first rotating shaft and the main shaft are meshed through a tooth part on a shaft body to realize synchronous rotation, the rear ends of the first rotating shaft, the second rotating shaft and the third rotating shaft realize synchronous transmission through a transmission chain or a transmission belt or a gear, a second groove-shaped wheel and a third groove-shaped wheel which have the same transmission radius as that of the first groove-shaped wheel are respectively arranged at the front ends of the second rotating shaft and the third rotating shaft, and a cutting rope sequentially winds around the second groove-shaped wheel, the third groove-shaped wheel and the cutting rope from top to bottom, A first geneva wheel and a third geneva wheel.
According to the invention, when the main shaft drives the first grooved wheel, the gear transmission between the first rotating shaft and the main shaft is utilized to transmit the same rotating speed to the first rotating shaft, at the moment, the rotating direction of the first rotating shaft is opposite to that of the main shaft, and further, the rotation of the first rotating shaft is synchronously transmitted to the second rotating shaft and the third rotating shaft by utilizing the transmission chain or the transmission belt, at the moment, the rotating directions of the second rotating shaft and the third rotating shaft are opposite to that of the main shaft, so that the upper section of the cutting rope sequentially bypassing the second grooved wheel, the first grooved wheel and the third grooved wheel from top to bottom is an outlet end when the main shaft rotates clockwise, and the lower section of the cutting rope is an outlet end when the main shaft rotates anticlockwise. The second grooved wheel and the third grooved wheel which are synchronously added greatly increase the total winding wrap angle and the total contact area of the cutting rope, so that the friction force between the cutting rope and the grooved wheels is increased, the slipping phenomenon of the cutting rope can be effectively avoided, and the abnormal abrasion of the grooved wheels caused by slipping can be avoided.
As a further development of the invention, the transmission radius of the first grooved wheel, the second grooved wheel and the third grooved wheel increases with increasing total wrap angle of the cutting cord. That is, according to different requirements of specific working conditions on the total contact area of the cutting rope and the grooved wheels, the first grooved wheel, the second grooved wheel and the third grooved wheel with different radiuses are selected, the increase of the radiuses of the three grooved wheels can increase the total contact area of the cutting rope, and the decrease of the radiuses of the three grooved wheels can reduce the total contact area of the cutting rope.
As a further improvement of the invention, in order to increase the contact area of the upper section of the cutting rope with the second grooved wheel, a first tension wheel for tensioning the upper section of the cutting rope is rotatably arranged on a base positioned at the inner side of the first grooved wheel through a support frame.
As a further improvement of the invention, in order to increase the contact area of the lower cutting rope section and the third grooved wheel, a second tension wheel for tensioning the lower cutting rope section is rotatably arranged on the base positioned at the inner side of the first grooved wheel through a supporting frame.
As a further improvement of the invention, the supporting frame adopts an assembled structure, and specifically, the supporting frame comprises a fixing plate, a supporting arm and a shaft seat, wherein the fixing plate is arranged on the base, the supporting arm is arranged on the fixing plate, the shaft seat is arranged at the upper end of the supporting arm, and the shaft seat is used for rotatably installing a first tensioning wheel or a second tensioning wheel; preferably, the fixing plates of the first tensioning wheel and the second tensioning wheel are one, but of course, one fixing plate can be used.
As a further improvement of the invention, the supporting arm is arranged on the fixing plate through a fastener, and the installation angle of the supporting arm can be adjusted by selecting installation holes with different angles. The supporting arm is mounted on the fixing plate in a mode of adjustable mounting angles, when the tensioning force of the first tensioning wheel or the second tensioning wheel to the cutting rope needs to be adjusted, the fastener is firstly dismounted, then the mounting hole with a proper angle is selected, and the fastening piece is used for fixing, so that the mounting structure is quick and reliable.
As a further improvement of the invention, the rear end of the main shaft is in transmission connection with the output end of the power equipment through a torque sensor, and the torque of the main shaft can be monitored in real time through the torque sensor.
As a further improvement of the invention, the first grooved wheel, the second grooved wheel and the third grooved wheel are respectively arranged at the front ends of the main shaft, the second rotating shaft and the third rotating shaft through flanges. To the above-mentioned technical scheme who installs main shaft, second pivot and the epaxial corresponding flute profile wheel of third pivot respectively through the flange, when there is wearing and tearing or damage in three flute profile wheels, can carry out quick replacement through flange mounting structure.
As a further improvement of the invention, the pedestal is mounted on the base by bolts.
According to the technical scheme that the shaft bracket is arranged on the base through the bolts, the position of the shaft bracket arranged on the base can be adjusted, and further the horizontal distance between the second rotating shaft and the third rotating shaft relative to the main shaft is adjusted to achieve the purpose of finely adjusting the total winding wrap angle and the total contact area of the cutting rope; specifically, the horizontal distance between the second rotating shaft and the third rotating shaft relative to the main shaft can be adjusted by any one or any two or three of the rotating shafts; preferably, the second pivot and the third pivot are distributed from top to bottom and are installed on the same pedestal, and take the mounted position of adjusting second pivot and third pivot simultaneously as an example, the mounted position of main shaft keeps fixed, when the total winding cornerite and the total area of contact of cutting rope need increase, draw close the pedestal of second pivot and third pivot to the main shaft and realize the fastening through the bolt, when the total winding cornerite and the total area of contact of cutting rope need reduce, adjust the pedestal of second pivot and third pivot to keeping away from the main shaft direction and realize the fastening through the bolt.
As a further improvement of the invention, a third tension pulley for pressing the drive chain or belt inward is provided between the second rotating shaft and the rear end of the third rotating shaft.
Through adopting above-mentioned technical scheme, when driving chain or drive belt by the first pivot of rear end drive, when second pivot and third pivot synchronous drive, the third take-up pulley can be located the first and the driving chain or the drive belt between pivot and the third pivot rear end inwards extrude the tensioning, not only can guarantee that driving chain or drive belt transmit power to second pivot and third pivot by first pivot with the same direction of rotation of rotational speed, and can make driving chain or drive belt and first pivot, more steady and noise reduction when sprocket or band pulley cooperate in second pivot and the third pivot.
In summary, compared with the prior art, the present application has at least one of the following beneficial technical effects:
1. according to the invention, the first grooved wheel, the second grooved wheel and the third grooved wheel which are distributed in a triangular shape and synchronously and coordinately driven are adopted to drive the cutting rope to circularly rotate towards one direction, so that the total winding wrap angle and the total contact area of the cutting rope are greatly increased, the friction force between the cutting rope and the grooved wheels is further increased, the slipping phenomenon of the cutting rope can be effectively avoided, and the abnormal abrasion of the grooved wheels caused by slipping can be avoided.
2. When the anti-skidding structure is used, the anti-skidding structures of the high-power coal seam slotting devices are respectively arranged in roadways on two sides of a coal seam, the walking platform is used for driving the anti-skidding structures of the two high-power coal seam slotting devices to synchronously and cooperatively work, and the constant tension control system is matched, so that the phenomenon of skidding of a cutting rope can be effectively avoided, meanwhile, the maximum power of the traditional civil power equipment is 75Kw, and the maximum power of the power equipment after the anti-skidding structure is adopted can be larger, such as 160Kw and the like, so as to meet the slotting requirement.
Drawings
FIG. 1 is a schematic front view of the structure of the present invention;
FIG. 2 is a schematic top view of the structure of the present invention;
fig. 3 is a schematic perspective view of the present invention.
Reference numerals:
100. a base;
110. a first tensioning wheel 110;
120. a second tensioning wheel;
130. a support frame;
131. a fixing plate;
132. a support arm;
133. a shaft seat;
140. a third tension pulley;
200. a main shaft;
210. a torque sensor;
220. a power plant;
300. a first grooved wheel;
400. a first rotating shaft;
500. a second rotating shaft;
600. a third rotating shaft;
700. a second grooved wheel;
800. a third grooved wheel;
900. the rope is cut.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 3 of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, are within the scope of the invention.
As shown in fig. 1 and 3, an anti-slip structure of a high-power coal seam slotting device mainly comprises a base 100, a spindle 200 is rotatably mounted on the base 100 through a shaft bracket, the rear end of the spindle 200 is a power input end, a first grooved wheel 300 is mounted at the front end of the spindle 200, a first rotating shaft 400, a second rotating shaft 500 and a third rotating shaft 600 are rotatably mounted on the base 100 outside the spindle 200 through the shaft bracket, the first rotating shaft 400, the second rotating shaft 500 and the third rotating shaft 600 are distributed in a triangular shape, the first rotating shaft 400 and the spindle 200 are synchronously rotated by meshing of teeth on the shaft bodies, the rear ends of the first rotating shaft 400, the second rotating shaft 500 and the third rotating shaft 600 are synchronously driven by a driving chain or a driving belt or a gear, the front ends of the second rotating shaft 500 and the third rotating shaft 600 are respectively mounted with a second grooved wheel 700 and a third grooved wheel 800 having the same driving radius as that of the first grooved wheel 300, the cutting rope 900 sequentially passes around the second sheave 800, the first sheave 300, and the third sheave 800 from top to bottom.
The working process of the clockwise rotation and the counterclockwise rotation of the main shaft 200 is similar, and then the clockwise rotation of the main shaft 200 is taken as an example, when the coal seam cutting machine works, the first rotating shaft 400 is meshed through the tooth parts to realize synchronous rotation with the main shaft 200, the synchronous rotation is rotation in the same rotating speed and opposite rotating directions, further, the transmission chain can be a transmission belt or a gear to realize that the second rotating shaft 500, the third rotating shaft 600 and the first rotating shaft 400 rotate in the same rotating speed and same rotating directions so as to ensure that the rotating speeds of the second grooved wheel 700 and the third grooved wheel 800 are the same as and the rotating directions of the first grooved wheel 300 are opposite, further, the upper section of the cutting rope 900 is taken as an outlet end, and the cyclic rotation of the cutting rope 900 is used for performing the seam cutting operation on the coal seam. As shown in fig. 2, the main shaft 200 and the first rotating shaft 400 share a shaft bracket, but may also use a separate shaft bracket; the second rotating shaft 500 and the third rotating shaft 600 share a shaft bracket, and similarly, an independent shaft bracket may also be respectively used, or any two or three or all of the main shaft 200, the first rotating shaft 400, the second rotating shaft 500 and the third rotating shaft 600 may share a shaft bracket.
In addition, as shown in fig. 2 and 3, the rear ends of the first rotating shaft 400, the second rotating shaft 500, and the third rotating shaft 600 are synchronously rotated by a double transmission chain, but a single transmission chain, a synchronous transmission belt, or a gear may be used to realize the synchronous rotation.
In addition, the transmission radius of the first geneva wheel 300, the second geneva wheel 800 and the third geneva wheel 800 increases as the total wrap angle of the cutting cord 900 increases. That is, the first grooved wheel 300, the second grooved wheel 800, and the third grooved wheel 800 are selected to have different radii according to the requirements of the total contact area of the cutting cord 900 and the grooved wheels for a specific operation, the increase of the radius of the three grooved wheels can increase the total contact area of the cutting cord 900, and the decrease of the radius of the three grooved wheels can decrease the total contact area of the cutting cord 900.
As shown in fig. 1 and 3, in order to increase a contact area of the upper segment of the cutting rope 900 with the second geneva wheel 800, a first tension wheel 110 for tensioning the upper segment of the cutting rope 900 is rotatably provided on the base 100 located inside the first geneva wheel 300 by means of a support bracket 130. In order to increase a contact area between the lower section of the cutting cord 900 and the third sheave 800, a second tension pulley 120 for tensioning the lower section of the cutting cord 900 is rotatably provided on the base 100 located inside the first sheave 300 by means of a support bracket 130.
In addition, as shown in fig. 1 and 3, the supporting frames of the first tensioning wheel 110 and the second tensioning wheel 120 share one fixing plate 131, but it is also possible to use a separate fixing plate, and further, the first tensioning wheel 110 and the second tensioning wheel 120 are supported by a shaft seat 133 mounted on the upper portion of a supporting arm 132 on the fixing plate, when the tensioning force of the first tensioning wheel 110 or the second tensioning wheel 120 on the cutting rope 900 needs to be adjusted, the fastening member is first removed, and then the mounting hole with a proper angle is selected and fixed by the fastening member, which is quick and reliable.
As shown in fig. 1 and 3, the rear end of the main shaft 200 is in transmission connection with the output end of the power device 220 through the torque sensor 210, and the torque of the main shaft 200 can be monitored in real time through the torque sensor 210, so as to adjust the rotation speed of the main shaft 200 or adjust the total winding wrap angle and the total contact area of the cutting rope 900.
In addition, all the shaft brackets are installed on the base 100 through bolts, so that the positions of the shaft brackets installed on the base 100 can be adjusted, and further, the horizontal distance between the second rotating shaft 500 and the third rotating shaft 600 relative to the main shaft 200 is adjusted to achieve the purpose of fine adjustment of the total winding wrap angle and the total contact area of the cutting rope 900; specifically, the horizontal distances of the second rotating shaft 500 and the third rotating shaft 600 with respect to the main shaft 200 may be adjusted by any one or any two or three of them at the same time; preferably, the second rotating shaft 500 and the third rotating shaft 600 are vertically distributed and mounted on the same shaft bracket, and taking the mounting positions of the second rotating shaft 500 and the third rotating shaft 600 as an example for simultaneous adjustment, the mounting position of the main shaft 200 is kept fixed, when the total winding wrap angle and the total contact area of the cutting rope 900 need to be increased, the shaft brackets of the second rotating shaft 500 and the third rotating shaft 600 are drawn close to the main shaft 200 and fastened through bolts, and when the total winding wrap angle and the total contact area of the cutting rope 900 need to be decreased, the shaft brackets of the second rotating shaft 500 and the third rotating shaft 600 are adjusted in the direction away from the main shaft 200 and fastened through bolts.
Further, as shown in fig. 2, a third tension pulley 140 for pressing the driving chain or belt inward is provided between the second rotating shaft 500 and the rear end of the third rotating shaft 600. By adopting the above technical scheme, when the transmission chain or the transmission belt drives the first rotating shaft 400, the second rotating shaft 500 and the third rotating shaft 600 to synchronously transmit by the rear end, the third tension wheel 140 can inwards extrude and tension the transmission chain or the transmission belt between the rear ends of the first rotating shaft and the third rotating shaft 600, so that the transmission chain or the transmission belt can not only ensure that the power is transmitted to the second rotating shaft 500 and the third rotating shaft 600 from the first rotating shaft 400 to the same rotating direction as the rotating speed, but also ensure that the transmission chain or the transmission belt is more stable and noise is reduced when being matched with the chain wheels or belt wheels on the first rotating shaft 400, the second rotating shaft 500 and the third rotating shaft 600.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. The utility model provides a high-power coal seam slotting device antiskid, includes base (100), rotate through the pedestal on base (100) and install main shaft (200), the rear end of main shaft (200) is power input end, first flute profile wheel (300), its characterized in that are installed to the front end of main shaft (200): be located main shaft (200) outside on base (100) rotate through the pedestal and install first pivot (400), second pivot (500) and third pivot (600), just first pivot (400) second pivot (500) with third pivot (600) are triangular distribution, first pivot (400) with realize synchronous rotation through the tooth meshing on the axis body between main shaft (200), first pivot (400) second pivot (500) with the rear end of third pivot (600) realizes synchronous transmission through driving chain or drive belt or gear, second pivot (500) with the front end of third pivot (600) install respectively with the same second flute profile wheel (700) and the third flute profile wheel (800) of transmission radius of first flute profile wheel (300), cutting rope (900) from top to bottom bypasses in proper order second flute profile wheel (700), The first grooved wheel (300) and the third grooved wheel (800).
2. The anti-skid structure of a high-power coal seam slotting device as claimed in claim 1, wherein: the transmission radius of the first grooved wheel (300), the second grooved wheel (700) and the third grooved wheel (800) increases with increasing total wrap angle of the cutting rope (900).
3. The anti-skid structure of a high-power coal seam slotting device as claimed in claim 2, wherein: a first tensioning wheel (110) for tensioning the upper section of the cutting rope (900) is rotatably arranged on the base (100) on the inner side of the first grooved wheel (300) through a supporting frame.
4. The anti-skid structure of a high-power coal seam slotting device as claimed in claim 2, wherein: a second tensioning wheel (120) for tensioning the lower section of the cutting rope (900) is rotatably arranged on the base (100) positioned at the inner side of the first groove-shaped wheel (300) through a supporting frame.
5. The anti-skid structure of the high-power coal seam slotting device as claimed in claim 3 or 4, wherein: the support frame includes fixed plate (131), support arm (132) and axle bed (133), fixed plate (131) set up on base (100), support arm (132) are installed on fixed plate (131), axle bed (133) set up support arm (132) upper end, axle bed (133) are used for rotating first take-up pulley of installation or second take-up pulley.
6. The anti-skid structure of a high-power coal seam slotting device as claimed in claim 5, wherein: the supporting arm (132) is mounted on the fixing plate (131) through a fastener, and the mounting angle of the supporting arm (132) is adjustable.
7. The anti-skid structure of a high-power coal seam slotting device as claimed in claim 1, wherein: the rear end of the main shaft (200) is in transmission connection with the output end of the power equipment through a torque sensor.
8. The anti-skid structure of the high-power coal seam slotting device as claimed in claim 1, wherein: the first grooved wheel (300), the second grooved wheel (700) and the third grooved wheel (800) are respectively installed at the front ends of the main shaft (200), the second rotating shaft (500) and the third rotating shaft (600) through flanges.
9. The anti-skid structure of a high-power coal seam slotting device as claimed in claim 1, wherein: the shaft bracket is mounted on the base (100) through bolts.
10. The anti-skid structure of a high-power coal seam slotting device as claimed in claim 1, wherein: and a third tension pulley (140) for pressing a transmission chain or a transmission belt inwards is arranged between the second rotating shaft (500) and the rear end of the third rotating shaft (600).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210848473.1A CN115110950A (en) | 2022-07-19 | 2022-07-19 | High-power coal seam slotting device antiskid structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210848473.1A CN115110950A (en) | 2022-07-19 | 2022-07-19 | High-power coal seam slotting device antiskid structure |
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| CN211500631U (en) * | 2019-12-06 | 2020-09-15 | 泉州市三盛金刚石工具有限公司 | Rope saw is with trading rope device fast |
| CN212147025U (en) * | 2020-02-25 | 2020-12-15 | 中铁二十四局集团浙江工程有限公司 | Rope saw device for pier beam |
| CN212684343U (en) * | 2020-05-02 | 2021-03-12 | 江西新光金刚石工具有限公司 | Tensioning device of wire saw |
| CN213563603U (en) * | 2020-10-16 | 2021-06-29 | 广西石立方石业发展有限公司 | Rope saw cutting device for marble exploitation |
| CN112610207A (en) * | 2021-01-25 | 2021-04-06 | 福建省霞浦县众源机械有限公司 | Novel mining and sawing machine for mine cavern and working method thereof |
| CN112936611A (en) * | 2021-04-13 | 2021-06-11 | 麻城市福兴石材工艺制品有限公司 | Rope sawing machine with dual adjusting function |
| CN216922107U (en) * | 2022-03-08 | 2022-07-08 | 海南丰佳科技有限公司 | Multi-rope sheave-driven stepless rope coal cutting device |
| CN217582109U (en) * | 2022-07-19 | 2022-10-14 | 平顶山市安泰华矿用安全设备制造有限公司 | High-power coal seam slotting device antiskid structure |
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