CN110697495A - Two-crawler-type tractor - Google Patents
Two-crawler-type tractor Download PDFInfo
- Publication number
- CN110697495A CN110697495A CN201911102047.8A CN201911102047A CN110697495A CN 110697495 A CN110697495 A CN 110697495A CN 201911102047 A CN201911102047 A CN 201911102047A CN 110697495 A CN110697495 A CN 110697495A
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- chain
- frame body
- frame
- wheel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H51/00—Forwarding filamentary material
- B65H51/14—Aprons, endless belts, lattices, or like driven elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/34—Handled filamentary material electric cords or electric power cables
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Abstract
The invention discloses a two-crawler-type tractor which comprises an upper movable frame, a lower fixed frame and a traction mechanism, wherein a plurality of slide rails are arranged on one side of the upper movable frame, the same ends of the plurality of slide rails are jointly connected with a top frame, a plurality of oil cylinders are arranged on the top frame, the bottom of each oil cylinder is connected with a telescopic rod, and each telescopic rod is connected into the corresponding slide rail and is connected with the upper movable frame. Can solve current crawler-type tractor because the track that adopts mostly leads to the phenomenon that skids appearing in the in-process of pulling the submarine cable easily in the flat belt, and lack the mechanism of adjusting the interval between two tracks, make the inconvenient problem of interval adjustment between two tracks, and two tracks lack the top tightly when pressing from both sides tight submarine cable, spacing part, thereby the problem of skidding when pulling appears easily, and each subassembly of the drive mechanism of tractor still needs the customization production, the cost is higher, purchase also comparatively trouble problem.
Description
Technical Field
The invention relates to the field of tractors, in particular to a double-crawler-type tractor.
Background
Receiving the cable at carrying out the submarine cable, need use two crawler-type tractors to pull in the cable laying working process, but current crawler-type tractor still has certain defect when using, at first, thereby it is mostly flat belt thereby the phenomenon that skids to lead to easily appearing in the in-process of pulling the submarine cable because the track that adopts, and lack the mechanism of adjusting the interval between two tracks, make the inconvenient problem of interval adjustment between two tracks, and two tracks lack the top tightly when pressing from both sides tight submarine cable, spacing part, thereby the problem of skidding when pulling appears easily, and each subassembly of the drive mechanism of tractor still needs the customization production, and the cost is higher, purchase is also comparatively troublesome.
The publication number is: the patent of CN204057451U discloses a crawler tractor, which, compared with the present application, cannot solve the problems proposed by the present application: the phenomenon that thereby current crawler tractor leads to easily appearing skidding at the in-process of pulling the submarine cable owing to the track that adopts is mostly flat belt, and lack the mechanism of adjusting the interval between two tracks, make the inconvenient problem of interval adjustment between two tracks, two tracks lack the top tightly when pressing from both sides tight submarine cable moreover, spacing part, thereby the problem of skidding when pulling appears easily, and each subassembly of the drive mechanism of tractor still need the customization production, and the cost is higher, purchase also comparatively troublesome problem.
Disclosure of Invention
The invention aims to provide a two-crawler-type tractor, which can solve the problems that the adopted crawler belts of the existing crawler-type tractor are mostly flat belts, so that the phenomenon of slipping is easily caused in the process of dragging a submarine cable, a mechanism for adjusting the distance between the two crawler belts is lacked, so that the distance between the two crawler belts is inconvenient to adjust, tight-jacking and limiting components are lacked when the submarine cable is clamped by the two crawler belts, so that the slipping problem during dragging is easily caused, and each component of the traction mechanism of the tractor needs to be customized and produced, so that the cost is high, and the purchase is troublesome.
The invention protects the traction structure form.
The upper crawler belt and the lower crawler belt are enabled to clamp the submarine cable through the oil cylinder, and meanwhile, the crawler belts are rotated, so that the traction of the submarine cable is realized.
The four wheels of the excavator are used for pulling the submarine cable (the chain, the supporting belt wheel, the supporting wheel and the driving wheel), so that the performance is reliable and the purchase is convenient.
The purpose of the invention can be realized by the following technical scheme:
a two-crawler-type tractor comprises an upper movable frame, a lower fixed frame and a traction mechanism, wherein one side of the upper movable frame is provided with a plurality of slide rails, the same ends of the plurality of slide rails are jointly connected with a top frame, the top frame is provided with a plurality of oil cylinders, the bottom of each oil cylinder is connected with a telescopic rod, each telescopic rod is connected into the inside of one slide rail at a corresponding position and is connected with the upper movable frame, an upper frame body is fixedly arranged on the side wall of the upper movable frame, a lower frame body is fixedly arranged on the side wall of the lower fixed frame, and a gap for traction of cables is reserved between the upper movable frame and the lower fixed frame;
the traction mechanism comprises an upper frame body and a lower frame body, the upper frame body and the lower frame body are symmetrically arranged, the upper frame body and the lower frame body respectively comprise a chain, a driving wheel and an auxiliary wheel, one end of the chain is provided with the driving wheel, and the other end of the chain is provided with an auxiliary wheel, the outer wall of the top of the chain is provided with a plurality of evenly distributed rubber blocks, a speed reducer is arranged on one side of the driving wheel, the speed reducer is connected with the driving wheel through a shaft, a driving motor is arranged on one side of the speed reducer, the driving motor is connected with the speed reducer through a shaft, the inner side wall of the upper half part of the chain on the upper frame body is connected with two supporting belt wheels in an abutting mode, and a row of thrust wheels are abutted to the inner side wall of the lower half part of the chain on the upper frame body, the row of thrust wheels are all fixed on a supporting rod, the first half inside wall butt of chain on the lower carriage body has another row of thrust wheel, just the last half inside wall butt of chain on the lower carriage body has two other support band wheels.
Preferably, the number of the oil cylinders corresponds to that of the sliding rails, and the upper movable frame is movably connected with the lower fixed frame through the oil cylinders and the telescopic rods.
Preferably, the chain and the rubber block are rotatably connected with the outer wall of the frame body at the corresponding position through a driving wheel and an auxiliary wheel.
Preferably, the lower half part of the chain on the upper frame body rotates from the auxiliary wheel to the driving wheel, and the upper half part of the chain on the lower frame body rotates from the auxiliary wheel to the driving wheel.
Preferably, the inner wall of the chain is connected with the supporting pulley and the thrust wheel in a sliding mode in the rotating process.
Preferably, the working method of the two crawler-type tractors comprises the following specific steps:
the method comprises the following steps: the submarine cable to be pulled is placed in a gap position between the lower fixed frame and the upper movable frame, the telescopic rod is driven to extend by the oil cylinder, so that the upper movable frame is driven to be drawn close to the lower fixed frame, and the submarine cable is clamped by the chain of the upper frame body and the chain of the lower frame body in the drawing process;
step two: start two driving motor, utilize driving motor to drive the speed reducer and rotate, the speed reducer drives the drive wheel rotation again to drive the chain and rotate, the direction of rotation of the chain the latter half on the upper support body is for rotating from the auxiliary wheel toward the drive wheel direction, the direction of rotation of the chain the first half on the lower support body is for rotating from the auxiliary wheel toward the drive wheel direction, thereby two chains pull the submarine cable jointly and pull toward a direction shift position to the submarine cable.
The invention has the beneficial effects that: by arranging the supporting belt wheels and the supporting wheels, the inner side wall of the upper half part of the chain on the upper frame body is abutted against the two supporting belt wheels, the inner side wall of the lower half part of the chain on the upper frame body is abutted against one row of supporting wheels, one row of supporting wheels are all fixed on one supporting rod, the inner side wall of the upper half part of the chain on the lower frame body is abutted against the other row of supporting wheels, the inner side wall of the lower half part of the chain on the lower frame body is abutted against the other two supporting belt wheels, and due to the existence of the supporting wheels, the tension of the chain is ensured, the submarine cable can be firmly clamped by the two chains due to the existence of the supporting wheels, meanwhile, the part of the two chains for clamping the submarine cable can be kept in a horizontal state, the contact surface of the chain and the submarine cable is effectively improved, the slippage is avoided, the chain, the supporting belt, moreover, special customized production is not needed, so that the cost of the tractor is greatly reduced;
by arranging the plurality of oil cylinders, when the submarine cable to be pulled is placed in a gap position between the lower fixed frame and the upper movable frame, the oil cylinders can be used for driving the telescopic rods to extend, so that the upper movable frame is driven to be drawn close to the lower fixed frame, and the submarine cable is clamped by the chain of the upper frame body and the chain of the lower frame body in the drawing process, so that the submarine cable can be firmly clamped by a tractor in the pulling process, and the situation of insufficient clamping is avoided;
when starting two driving motor, utilize driving motor to drive the speed reducer and rotate, the speed reducer drives the drive wheel rotation again to drive the chain and rotate, because the direction of rotation of the chain the latter half on the upper bracket body is for rotating from the auxiliary wheel toward the drive wheel direction, the direction of rotation of the chain the first half on the lower bracket body is for rotating from the auxiliary wheel toward the drive wheel direction, thereby two chains pull submarine cable toward a direction shift position jointly, realize pulling the stability of submarine cable.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the chain structure of the present invention;
in the figure: 1. a lower fixing frame; 2. an upper movable frame; 3. a top frame; 4. an oil cylinder; 5. a telescopic rod; 6. a slide rail; 7. a chain; 8. a drive wheel; 9. a speed reducer; 10. a drive motor; 11. a belt supporting wheel; 12. a thrust wheel; 13. a rubber block; 14. a strut; 15. and (4) a secondary wheel.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, a two-track type tractor comprises an upper movable frame 2, a lower fixed frame 1 and a traction mechanism, wherein one side of the upper movable frame 2 is provided with a plurality of slide rails 6, the same end of each slide rail 6 is commonly connected with a top frame 3, the top frame 3 is provided with a plurality of oil cylinders 4, the bottom of each oil cylinder 4 is connected with a telescopic rod 5, each telescopic rod 5 is connected into the inside of one slide rail 6 at a corresponding position and is connected with the upper movable frame 2, the side wall of the upper movable frame 2 is fixedly provided with an upper frame body, the side wall of the lower fixed frame 1 is fixedly provided with a lower frame body, and a gap for drawing cables is reserved between the upper movable frame 2 and the lower fixed frame 1;
the traction mechanism comprises an upper frame body and a lower frame body, the upper frame body and the lower frame body are symmetrically arranged, both the upper frame body and the lower frame body comprise a chain 7, a driving wheel 8 and an auxiliary wheel 15, one end of the chain 7 is provided with the driving wheel 8, and the other end of the chain 7 is provided with an auxiliary wheel 15, the outer wall of the top of the chain 7 is provided with a plurality of evenly distributed rubber blocks 13, one side of the driving wheel 8 is provided with a speed reducer 9, the speed reducer 9 is connected with the driving wheel 8 through a shaft, one side of the speed reducer 9 is provided with a driving motor 10, the driving motor 10 is connected with the speed reducer 9 through a shaft, the inner side wall of the upper half part of the chain 7 on the upper frame body is abutted with two supporting belt wheels, and the inside wall of the lower half part of the chain 7 on the upper frame body is abutted with one row of thrust wheels 12, one row of thrust wheels 12 are all fixed on one supporting rod 14, the inside wall of the upper half part of the chain 7 on the lower frame body is abutted with the other row of thrust wheels 12, and the inside wall of the lower half part of the chain 7 on the lower frame body is abutted with the other two belt supporting wheels 11.
The number of the oil cylinders 4 corresponds to that of the sliding rails 6, and the upper movable frame 2 is movably connected with the lower fixed frame 1 through the oil cylinders 4 and the telescopic rods 5.
The chain 7 and the rubber block 13 are rotatably connected with the outer wall of the frame body at the corresponding position through the driving wheel 8 and the auxiliary wheel 15.
The lower half of the chain 7 on the upper frame rotates from the auxiliary wheel 15 to the driving wheel 8, and the upper half of the chain 7 on the lower frame rotates from the auxiliary wheel 15 to the driving wheel 8.
The inner wall of the chain 7 is connected with the idler wheel 11 and the thrust wheel 12 in a sliding way in the rotating process.
The working method of the two crawler-type tractors comprises the following specific steps:
the method comprises the following steps: the submarine cable to be pulled is placed in a gap position between the lower fixed frame 1 and the upper movable frame 2, the telescopic rod 5 is driven to extend by the oil cylinder, so that the upper movable frame 2 is driven to approach towards the lower fixed frame 1, and the submarine cable is clamped by the chain 7 of the upper frame body and the chain 7 of the lower frame body in the approaching process;
step two: two driving motor 10 are started, driving motor 10 is utilized to drive speed reducer 9 to rotate, speed reducer 9 drives driving wheel 8 to rotate again, thereby driving chain 7 to rotate, the rotation direction of the lower half part of chain 7 on the upper frame body is rotated from auxiliary wheel 15 to driving wheel 8, the rotation direction of the upper half part of chain 7 on the lower frame body is rotated from auxiliary wheel 15 to driving wheel 8, thereby two chains 7 pull the submarine cable to pull towards a direction shift position jointly.
When the two driving motors 10 are started, the driving motors 10 are utilized to drive the speed reducer 9 to rotate, the speed reducer 9 drives the driving wheel 8 to rotate, so that the chain 7 is driven to rotate, the rotation direction of the lower half part of the chain 7 on the upper frame body is from the auxiliary wheel 15 to the driving wheel 8, the rotation direction of the upper half part of the chain 7 on the lower frame body is from the auxiliary wheel 15 to the driving wheel 8, and therefore the two chains 7 jointly pull the submarine cable to move in one direction, and the submarine cable is pulled;
by arranging the supporting belt wheels 11 and the supporting wheels 12, the inner side wall of the upper half part of the chain 7 on the upper frame body is abutted with the two supporting belt wheels 11, the inner side wall of the lower half part of the chain 7 on the upper frame body is abutted with one row of supporting wheels 12, one row of supporting wheels 12 are all fixed on one supporting rod 14, the inner side wall of the upper half part of the chain 7 on the lower frame body is abutted with the other row of supporting wheels 12, the inner side wall of the lower half part of the chain 7 on the lower frame body is abutted with the other two supporting belt wheels 11, the tension of the chain 7 is ensured due to the existence of the supporting belt wheels 11, the two chains 7 can firmly clamp the submarine cable, meanwhile, the parts of the two chains 7 clamping the submarine cable can keep a horizontal state, the contact surface of the chain 7 and the submarine cable is effectively improved, the slippage is avoided, and the chain 7, the supporting belt wheels 11, the supporting wheels 12 and, the purchase, the disassembly and the reassembly are both extremely convenient, and special customized production is not needed, so that the cost of the tractor is greatly reduced;
through setting up a plurality of hydro-cylinder 4, when the submarine cable that will pull is placed the clearance position between mount 1 and last adjustable shelf 2 down, can utilize hydro-cylinder drive telescopic link 5 extension to drive the adjustable shelf 2 and draw close down mount 1 direction, the chain 7 of frame body, the chain 7 of lower frame body come the tight submarine cable of clamp in the chain 7 that utilizes the frame body in the in-process of drawing close, make the tractor can be firm at the tight submarine cable of clamp of pulling the in-process, avoid pressing from both sides tight not enough condition.
When the invention is used, firstly, the whole tractor is assembled, an upper movable frame 2 is connected with a plurality of telescopic rods 5, the telescopic rods are connected into a slide rail 6 and are connected with an oil cylinder 4, the position of a lower fixed frame 1 is fixed, the upper movable frame 2 and the lower fixed frame 1 are arranged in a right-facing way with a gap left between the upper movable frame 2 and the lower fixed frame 1, then an upper frame body and a lower frame body are respectively arranged on the upper movable frame 2 and the lower fixed frame 1, the upper frame body and the lower frame body are symmetrically arranged, a chain is respectively arranged on the upper frame body and the lower frame body, one end of the chain 7 is provided with a driving wheel 8, the other end of the chain 7 is provided with an auxiliary wheel 15, one side of the driving wheel 8 is provided with a speed reducer 9, the speed reducer 9 is connected with a driving wheel 8 through a shaft, one side of the speed reducer 9 is, and the inner side wall of the lower half part of the chain 7 on the upper frame body is abutted with a row of supporting wheels 12, the row of supporting wheels 12 are all fixed on a supporting rod 14, the inner side wall of the upper half part of the chain 7 on the lower frame body is abutted with another row of supporting wheels 12, the inner side wall of the lower half part of the chain 7 on the lower frame body is abutted with another two supporting belt wheels 11, the chain 7, the supporting belt wheels 11, the supporting wheels 12 and the driving wheels 8 are accessories directly disassembled from the existing excavator, the purchasing, the disassembling and the reassembling are both extremely convenient, and the special customized production is not needed, the cost of the tractor is greatly reduced, the tractor can be put into use after the assembling is completed, the submarine cable to be dragged is placed at the clearance position between the lower fixing frame 1 and the upper movable frame 2, the oil cylinder is utilized to drive the telescopic rod 5 to extend, thereby driving the upper movable frame 2 to, The chains 7 of the lower frame body clamp the submarine cable, so that the traction machine can firmly clamp the submarine cable in the traction process, the existence of the supporting belt wheel 11 ensures the tension of the chains 7, the existence of the supporting wheel 12 ensures that the two chains 7 can firmly clamp the submarine cable, meanwhile, the parts of the two chains 7 clamping the submarine cable can keep a horizontal state, the contact surface between the chains 7 and the submarine cable is effectively improved, the slip is avoided, then the two driving motors 10 are started, the driving motors 10 are utilized to drive the speed reducer 9 to rotate, the speed reducer 9 drives the driving wheel 8 to rotate, so as to drive the chains 7 to rotate, the rotation direction of the lower half part of the chain 7 on the upper frame body is from the auxiliary wheel 15 to the driving wheel 8, the rotation direction of the upper half part of the chain 7 on the lower frame body is from the auxiliary wheel 15 to the driving wheel 8, so that the two chains 7 jointly pull the submarine cable to move to one direction, the traction of the submarine cable is realized.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (6)
1. A two-crawler-type tractor comprises an upper movable frame (2), a lower fixed frame (1) and a traction mechanism, and is characterized in that a plurality of sliding rails (6) are arranged on one side of the upper movable frame (2), one end of each sliding rail (6) is connected with a top frame (3), a plurality of oil cylinders (4) are mounted on the top frame (3), the bottom of each oil cylinder (4) is connected with a telescopic rod (5), each telescopic rod (5) is connected into the corresponding sliding rail (6) and is connected with the upper movable frame (2), an upper frame body is fixedly mounted on the side wall of the upper movable frame (2), a lower frame body is fixedly mounted on the side wall of the lower fixed frame (1), and a gap for traction of cables is reserved between the upper movable frame (2) and the lower fixed frame (1);
the traction mechanism comprises an upper frame body and a lower frame body, the upper frame body and the lower frame body are symmetrically arranged, the upper frame body and the lower frame body respectively comprise a chain (7), a driving wheel (8) and an auxiliary wheel (15), the driving wheel (8) is installed at one end of the chain (7), the auxiliary wheel (15) is installed at the other end of the chain (7), a plurality of rubber blocks (13) which are uniformly distributed are arranged on the outer wall of the top of the chain (7), a speed reducer (9) is installed on one side of the driving wheel (8), the speed reducer (9) is connected with the driving wheel (8) through a shaft, a driving motor (10) is installed on one side of the speed reducer (9), the driving motor (10) is connected with the speed reducer (9) through a shaft, the inner side wall of the upper half part of the chain (7) on the upper frame body is abutted to two supporting belt wheels (11), and the inner side wall, one row of thrust wheels (12) are all fixed on one branch rod (14), the first half inside wall of the chain (7) on the lower frame body is connected with another row of thrust wheels (12), and the second half inside wall of the chain (7) on the lower frame body is connected with another two supporting belt wheels (11).
2. The two-crawler-type tractor according to claim 1, wherein the number of the oil cylinders (4) corresponds to that of the slide rails (6), and the upper movable frame (2) is movably connected with the lower fixed frame (1) through the oil cylinders (4) and the telescopic rods (5).
3. A two-track tractor according to claim 1, characterised in that the chain (7) and the rubber blocks (13) are rotatably connected to the outer wall of the frame in the corresponding positions by means of the driving wheels (8) and the auxiliary wheels (15).
4. A two-track tractor according to claim 1, characterised in that the lower half of the chain (7) on the upper frame body rotates from the auxiliary wheel (15) to the drive wheel (8), and the upper half of the chain (7) on the lower frame body rotates from the auxiliary wheel (15) to the drive wheel (8).
5. A two-track tractor according to claim 1, characterised in that the chain (7) is slidingly connected, during rotation, between its inner wall and the idler (11) and the thrust wheel (12).
6. The two-track tractor according to claim 1, wherein the working method of the two-track tractor comprises the following specific steps:
the method comprises the following steps: the submarine cable to be pulled is placed in a gap position between the lower fixed frame (1) and the upper movable frame (2), the telescopic rod (5) is driven to extend by the oil cylinder (4), so that the upper movable frame (2) is driven to approach towards the lower fixed frame (1), and the submarine cable is clamped by the chain (7) of the upper frame body and the chain (7) of the lower frame body in the approaching process;
step two: start two driving motor (10), utilize driving motor (10) to drive speed reducer (9) and rotate, speed reducer (9) drives drive wheel (8) rotation again, thereby it rotates to drive chain (7), the direction of rotation of chain (7) the latter half on the upper ledge body is for following auxiliary wheel (15) and toward drive wheel (8) direction rotation, the direction of rotation of chain (7) the upper half on the lower ledge body is for following auxiliary wheel (15) and toward drive wheel (8) direction rotation, thereby two chains (7) pull the submarine cable jointly and pull toward a direction shift position and pull the submarine cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911102047.8A CN110697495A (en) | 2019-11-12 | 2019-11-12 | Two-crawler-type tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911102047.8A CN110697495A (en) | 2019-11-12 | 2019-11-12 | Two-crawler-type tractor |
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| Publication Number | Publication Date |
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| CN110697495A true CN110697495A (en) | 2020-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911102047.8A Pending CN110697495A (en) | 2019-11-12 | 2019-11-12 | Two-crawler-type tractor |
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| CN (1) | CN110697495A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112993868A (en) * | 2021-02-26 | 2021-06-18 | 中国十七冶集团有限公司 | Method for discharging cable by using excavator crawler belt |
| CN116654711A (en) * | 2023-07-27 | 2023-08-29 | 中泰亚信技术有限公司 | Tractor for communication optical cable and traction method thereof |
| CN117068648A (en) * | 2023-09-08 | 2023-11-17 | 苏州市越海拉伸机械有限公司 | Crawler-type heavy-load tractor |
-
2019
- 2019-11-12 CN CN201911102047.8A patent/CN110697495A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112993868A (en) * | 2021-02-26 | 2021-06-18 | 中国十七冶集团有限公司 | Method for discharging cable by using excavator crawler belt |
| CN112993868B (en) * | 2021-02-26 | 2022-09-02 | 中国十七冶集团有限公司 | Method for discharging cable by using excavator crawler belt |
| CN116654711A (en) * | 2023-07-27 | 2023-08-29 | 中泰亚信技术有限公司 | Tractor for communication optical cable and traction method thereof |
| CN116654711B (en) * | 2023-07-27 | 2023-10-10 | 中泰亚信技术有限公司 | Tractor for communication optical cable and traction method thereof |
| CN117068648A (en) * | 2023-09-08 | 2023-11-17 | 苏州市越海拉伸机械有限公司 | Crawler-type heavy-load tractor |
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