CN113618009B - Forging waterproof device and application method thereof - Google Patents
Forging waterproof device and application method thereof Download PDFInfo
- Publication number
- CN113618009B CN113618009B CN202111042179.3A CN202111042179A CN113618009B CN 113618009 B CN113618009 B CN 113618009B CN 202111042179 A CN202111042179 A CN 202111042179A CN 113618009 B CN113618009 B CN 113618009B
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- shaft
- lifting cover
- cable
- seat
- pipe body
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- 238000005242 forging Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 22
- 239000010959 steel Substances 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000007921 spray Substances 0.000 claims abstract description 6
- 230000005540 biological transmission Effects 0.000 claims description 40
- 238000005507 spraying Methods 0.000 claims description 8
- 230000005484 gravity Effects 0.000 claims description 5
- 230000006978 adaptation Effects 0.000 claims 1
- 230000001360 synchronised effect Effects 0.000 claims 1
- 238000003860 storage Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/08—Accessories for handling work or tools
- B21J13/085—Accessories for handling work or tools handling of tools
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Emergency Lowering Means (AREA)
- Closing And Opening Devices For Wings, And Checks For Wings (AREA)
Abstract
The invention relates to a forging waterproof device which comprises a top plate, a lifting cover, a folding pipe body and a bottom ring, wherein a plurality of second shaft seats are symmetrically arranged at the bottom side of the top plate at equal angles; the lifting cover and the folding pipe body are covered on the outer side of the forging machine completely, the forging machine is protected from being waterproofed, spray water is prevented from entering the forging machine, normal operation of the forging machine is guaranteed, meanwhile, when the first steel rope distributed at 120 degrees is lifted, shaking is avoided when the lifting cover is lifted through mutual restriction of the first steel rope, lifting stability of the lifting cover is guaranteed, meanwhile, the folding pipe body at the bottom of the lifting cover can stretch out and draw back according to specific use conditions, the folding pipe body can be rapidly put into use when not used, folding storage is greatly reduced, and practical use is facilitated.
Description
Technical Field
The invention relates to the technical field of forging processing, in particular to a forging waterproof device and a using method thereof.
Background
Forging is a processing method for applying pressure to a metal blank by using forging machinery to enable the metal blank to be plastically deformed so as to obtain a forging piece with certain mechanical properties, a certain shape and a certain size, and one of two components of forging.
When forging is performed in a factory building through the forging machine, as the fire protection system is arranged in the factory building, once the problem of temperature unbalance or open fire occurs in the factory building, the fire protection system begins to work and sprays by utilizing the spraying zero head, and then the spraying is performed on the forging machine, so that the forging machine is influenced, water accumulation in the forging machine is caused, and the normal work of the forging machine is influenced.
Disclosure of Invention
The invention solves the problems that when forging is carried out in a factory building through a forging machine, a fire control system is arranged in the factory building, and once the temperature unbalance or open fire occurs in the factory building, the fire control system begins to work and sprays by using a zero nozzle, and the spraying is carried out on the forging machine, so that the forging machine is influenced, water accumulation in the forging machine is caused, and the normal work of the forging machine is influenced.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
The utility model provides a forge watertight fittings, includes roof, lift cap, folding body and bottom ring, a plurality of second axle seats are installed to equiangular symmetry in roof bottom side, two rotate between the second axle seat and install first pivot, first pivot outside mid-mounting has first guide pulley, lift cap top side equiangular symmetry installs a plurality of first axle seats, two rotate between the first axle seat and install first cable axle, first cable axle outside winding has first cable, and first cable passes through first guide pulley and lift cap top side mid-portion fixed connection, folding body is installed to the lift cap bottom side, folding body bottom is installed to the bottom ring, the connecting block is installed to bottom ring inside wall symmetry;
The lifting cover is characterized in that a third shaft seat is symmetrically arranged in the middle of the bottom side of the lifting cover, two second cable shafts are rotatably arranged between the third shaft seats, the two second cable shafts rotate in the same speed and in opposite directions, a second steel cable is wound on the outer side of each second cable shaft, a plurality of fourth shaft seats are symmetrically arranged at two ends of the bottom side of the lifting cover, a second rotating shaft is rotatably arranged between the fourth shaft seats at the same end, a second guide wheel is arranged in the middle of the outer side of each second rotating shaft, and the second steel cable is connected with a connecting block through the second guide wheel.
Preferably, the first motor is installed in the first shaft seat outside, and first motor output end and first axle head end are connected, and first axle is connected with first shaft seat bearing, the number of first axle is 3, and is 120 distribution.
Preferably, the first rotating shaft is connected with the second shaft seat through a bearing, the pneumatic rod is arranged on the inner side of the second shaft seat, the first rotating shaft end penetrates through the second shaft seat to be provided with a limiting disc, and the limiting disc is provided with a plurality of limiting holes matched with the piston rod of the pneumatic rod.
Preferably, the second cable shaft is connected with a third shaft seat bearing, a transmission case is installed on the outer side of the third shaft seat, the output ends of the transmission case are respectively connected with the two second cable shafts, and the input ends of the transmission case are connected with the output ends of the second motor.
Preferably, the output end of the second motor is provided with a first sprocket and a rotating tooth which are positioned in the transmission case, the two ends of the second rope shaft are respectively positioned in the transmission case and provided with a second sprocket and a transmission tooth, the first sprocket and the second sprocket are connected through chain transmission, and the rotating tooth is meshed with the transmission tooth.
Preferably, the second rotating shaft is connected with the fourth shaft seat bearing, and the second rotating shaft is distributed at 180 degrees.
The application method of the forging waterproof device comprises the following specific operation steps:
Step one: the top plate is fixed in a factory building and is positioned above the forging machine, when fire alarms in the factory building occur, the spray head starts spraying water at the moment, a first motor on a first shaft seat at the top of the lifting cover works to drive a first cable shaft to rotate at the moment, a first steel cable wound on the first cable shaft is discharged, and the discharged first steel cable moves along a first guide wheel on a first rotating shaft of a second shaft seat at the moment to realize downward movement of the lifting cover;
Step two: when the lifting cover moves downwards, a second motor on the third shaft seat works to drive a transmission shaft in the transmission box to rotate, so that the rotation of the first sprocket and the rotation teeth is realized, the first sprocket and the second sprocket are driven by a chain, the rotation teeth and the transmission teeth are meshed and driven, the same-speed reverse rotation of the second rope shaft is realized, the second steel rope is discharged, at the moment, the second steel rope moves along a second guide wheel on a second rotating shaft of the fourth shaft seat, and meanwhile, the folding pipe body in a folding state is unfolded under the action of the gravity of the bottom ring until the lifting cover and the folding pipe body are completely covered outside the forging machine;
Step three: at the moment, the piston rod is driven to extend through the operation of the pneumatic rod until the piston rod is disassembled into a limiting hole of the limiting disc, the height of the lifting cover is fixed, and after the fire alarm contacts, the piston rod is contracted, and then the lifting cover and the folding pipe body are recovered.
The beneficial effects of the invention are as follows: the first motor on the first shaft seat at the top of the lifting cover works to drive the first cable shaft to rotate, the first cable rope wound on the first cable shaft is released, the released first cable rope moves along the first guide wheel on the first rotating shaft of the second shaft seat at the moment, the lifting cover moves downwards, meanwhile, the second motor on the third shaft seat works to drive the transmission shaft in the transmission box to rotate, and further, the rotation of the first sprocket and the rotating teeth is realized, the first sprocket and the second sprocket are driven by a chain, the rotating teeth and the transmission teeth are meshed and driven, the same-speed reverse rotation of the second cable shaft is realized, the second cable rope is released, at the moment, the second cable rope moves along the second guide wheel on the second rotating shaft of the fourth shaft seat, and meanwhile, the folding pipe body in a folding state is unfolded under the gravity action of the bottom ring until the lifting cover and the folding pipe body are completely covered on the outer side of the forging machine, so that the waterproof protection is realized, the spraying water is prevented from entering the forging machine, and the normal work of the forging machine is ensured;
Meanwhile, when the first steel ropes distributed at 120 degrees are lifted, the shaking of the lifting cover is avoided when the lifting cover is lifted through mutual restriction of the first steel ropes, so that the lifting stability of the lifting cover is ensured;
Meanwhile, the folding pipe body at the bottom of the lifting cover can stretch and retract according to the specific use condition, can be rapidly put into use when not in use, is folded and stored when not in use, greatly reduces the storage space, and is convenient for practical use.
Drawings
FIG. 1 is a schematic diagram of the overall structure of one side of the present invention;
FIG. 2 is a schematic diagram of the other side of the whole structure of the present invention;
FIG. 3 is a front view of the present invention;
Fig. 4 is a schematic diagram of the internal structure of the transmission case of the present invention.
Legend description:
1. A top plate; 2. a lifting cover; 3. folding the tube body; 4. a bottom ring; 5. a first shaft seat; 6. a first cable shaft; 7. a first motor; 8. a first wire rope; 9. a second axle seat; 10. a first rotating shaft; 11. the first guide wheel; 12. a limiting disc; 13. a pneumatic rod; 14. a limiting hole; 15. a third shaft seat; 16. a transmission case; 17. a second motor; 18. a second cable shaft; 19. a fourth shaft seat; 20. a second rotating shaft; 21. the second guide wheel; 22. a connecting block; 23. a transmission shaft; 24. a first sprocket; 25. a second sprocket; 26. a chain; 27. rotating teeth; 28. and a driving gear.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Specific examples are given below.
Referring to fig. 1 to 4, the forging waterproof device comprises a top plate 1, a lifting cover 2, a folding pipe body 3 and a bottom ring 4, wherein a plurality of second shaft seats 9 are symmetrically arranged at the bottom side of the top plate 1 at equal angles, a first rotating shaft 10 is rotatably arranged between the two second shaft seats 9, a first guide wheel 11 is arranged at the middle part of the outer side of the first rotating shaft 10, a plurality of first shaft seats 5 are symmetrically arranged at the top side of the lifting cover 2 at equal angles, a first cable shaft 6 is rotatably arranged between the two first shaft seats 5, a first cable 8 is wound at the outer side of the first cable shaft 6, the first cable 8 is fixedly connected with the middle part of the top side of the lifting cover 2 through the first guide wheel 11, the folding pipe body 3 is arranged at the bottom side of the lifting cover 2, and a connecting block 22 is symmetrically arranged at the inner side wall of the bottom ring 4;
the middle part of the bottom side of the lifting cover 2 is symmetrically provided with a third shaft seat 15, two second cable shafts 18 are rotatably arranged between the third shaft seats 15, the two second cable shafts 18 rotate in the same speed and in opposite directions, second steel cables are wound on the outer sides of the second cable shafts 18, two ends of the bottom side of the lifting cover 2 are symmetrically provided with a plurality of fourth shaft seats 19, a second rotating shaft 20 is rotatably arranged between the two fourth shaft seats 19 at the same end, a second guide wheel 21 is arranged in the middle of the outer side of the second rotating shaft 20, and the second steel cables are connected with a connecting block 22 through the second guide wheel 21.
As an implementation mode of the invention, a first motor 7 is arranged on the outer side of the first shaft seat 5, the output end of the first motor 7 is connected with the end part of the first cable shaft 6, the first cable shaft 6 is in bearing connection with the first shaft seat 5, the number of the first cable shafts 6 is 3 and distributed at 120 degrees, and meanwhile, when the lifting cover 2 is lifted through the first steel cables 8 distributed at 120 degrees, the shaking is avoided through the mutual restriction of the first steel cables 8, and the lifting stability of the lifting cover 2 is ensured.
As an implementation mode of the invention, the first rotating shaft 10 is in bearing connection with the second shaft seat 9, the air pressure rod 13 is arranged on the inner side of the second shaft seat 9, the limiting disc 12 is arranged at the end part of the first rotating shaft 10 penetrating through the second shaft seat 9, a plurality of limiting holes 14 matched with piston rods of the air pressure rod 13 are formed in the limiting disc 12, the piston rods are driven to extend through the operation of the air pressure rod 13 until the piston rods are disassembled into the limiting holes 14 of the limiting disc 12, and the height of the lifting cover 2 is fixed.
As one implementation mode of the invention, the second rope shaft 18 is in bearing connection with the third shaft seat 15, the transmission case 16 is arranged outside the third shaft seat 15, the output end of the transmission case 16 is respectively connected with the two second rope shafts 18, the input end of the transmission case 16 is connected with the output end of the second motor 17, the first sprocket 24 and the rotating teeth 27 are arranged in the transmission case 16, the end parts of the two second rope shafts 18 are respectively arranged in the transmission case 16 and are provided with the second sprocket 25 and the driving teeth 28, the first sprocket 24 and the second sprocket 25 are in driving connection through a chain 26, the rotating teeth 27 are meshed with the driving teeth 28, the second motor 17 on the third shaft seat 15 works to drive the transmission shaft 23 in the transmission case 16 to rotate, so that the rotation of the first sprocket 24 and the rotating teeth 27 is realized, the first sprocket 24 and the second sprocket 25 are driven through the chain 26, the rotating teeth 27 and the driving teeth 28 are meshed to drive, and the same-speed and reverse rotation of the second rope shaft 18 is realized.
As an embodiment of the present invention, the second rotating shaft 20 is in bearing connection with the fourth shaft seat 19, and the second rotating shaft 20 is distributed at 180 ° to realize the rotation connection of the second rotating shaft 20 and corresponds to the second cable shaft 18.
The application method of the forging waterproof device comprises the following specific operation steps:
Step one: the top plate 1 is fixed in a factory building and is positioned above the forging machine, when fire alarms in the factory building occur, the spray head starts spraying water at the moment, the first motor 7 on the first shaft seat 5 at the top of the lifting cover 2 works to drive the first cable shaft 6 to rotate, the first cable rope 8 wound on the first cable shaft 6 is discharged, and the discharged first cable rope 8 moves along the first guide wheel 11 on the first rotating shaft 10 of the second shaft seat 9 at the moment to realize the downward movement of the lifting cover 2;
Step two: when the lifting cover 2 moves downwards, the second motor 17 on the third shaft seat 15 works to drive the transmission shaft 23 in the transmission box 16 to rotate, so that the rotation of the first chain wheel 24 and the rotation teeth 27 is realized, the first chain wheel 24 and the second chain wheel 25 are driven by the chain 26, the rotation teeth 27 and the transmission teeth 28 are meshed and driven, the same-speed reverse rotation of the second rope shaft 18 is realized, the second rope is discharged, at the moment, the second rope moves along the second guide wheel 21 on the second rotating shaft 20 of the fourth shaft seat 19, and meanwhile, the folding pipe body 3 in a folding state is unfolded under the gravity action of the bottom ring 4 until the lifting cover 2 and the folding pipe body 3 are completely covered outside the forging machine;
step three: at the moment, the piston rod is driven to extend through the operation of the pneumatic rod 13 until the piston rod is disassembled into the limiting hole 14 of the limiting disc 12, the height of the lifting cover 2 is fixed, and after the fire alarm contacts, the piston rod is contracted, and then the lifting cover 2 and the folding pipe body 3 are recovered.
The first motor 7 on the first shaft seat 5 at the top of the lifting cover 2 works to drive the first cable shaft 6 to rotate, the first cable 8 wound on the first cable shaft 6 is discharged, the discharged first cable 8 moves along the first guide wheel 11 on the first shaft seat 10 of the second shaft seat 9 at the moment, the downward movement of the lifting cover 2 is realized, the second motor 17 on the third shaft seat 15 works to drive the transmission shaft 23 in the transmission box 16 to rotate, the rotation of the first chain wheel 24 and the rotating teeth 27 is realized, the first chain wheel 24 and the second chain wheel 25 are driven by the chain 26, the rotating teeth 27 and the transmission teeth 28 are meshed to drive, the same-speed reverse rotation of the second cable shaft 18 is realized, the second cable is discharged, the second cable moves along the second guide wheel 21 on the second shaft seat 20 of the fourth shaft seat 19 at the moment, and the folded pipe body 3 in a folded state is unfolded under the gravity action of the bottom ring 4 until the lifting cover 2 and the folded pipe body 3 are completely covered outside the forging machine, the waterproof protection is realized, the spraying water is prevented from entering the forging machine, and the normal work of the forging machine is ensured;
Meanwhile, when the first steel ropes 8 distributed at 120 degrees are lifted, the shaking of the lifting cover 2 is avoided when the lifting cover 2 is lifted by the mutual restriction of the first steel ropes 8, so that the lifting stability of the lifting cover 2 is ensured;
Meanwhile, the folding pipe body 3 at the bottom of the lifting cover 2 can stretch and retract according to specific use conditions, can be quickly put into use when not in use, is folded and stored when not in use, greatly reduces storage space, and is convenient for practical use.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (2)
1. The utility model provides a forge watertight fittings, its characterized in that includes roof (1), lift cover (2), folding body (3) and bottom ring (4), a plurality of second axle seat (9) are installed to roof (1) bottom equiangular symmetry, two rotate between second axle seat (9) and install first pivot (10), first pivot (10) and second axle seat (9) bearing connection, air pressure pole (13) are installed to second axle seat (9) inboard, limit disc (12) are installed in first pivot (10) tip run through second axle seat (9), set up a plurality of spacing hole (14) with air pressure pole (13) piston rod adaptation on limit disc (12); the middle part of the outer side of the first rotating shaft (10) is provided with a first guide wheel (11), a plurality of first shaft seats (5) are symmetrically arranged on the top side of the lifting cover (2) at equal angles, a first motor (7) is arranged on the outer side of the first shaft seats (5), the output end of the first motor (7) is connected with the end part of a first cable shaft (6), the first cable shaft (6) is connected with a first shaft seat (5) through bearings, and the number of the first cable shafts (6) is 3 and distributed at 120 degrees; a first cable shaft (6) is rotatably arranged between the two first shaft seats (5), a first steel cable (8) is wound on the outer side of the first cable shaft (6), the first steel cable (8) is fixedly connected with the middle part of the top side of the lifting cover (2) through a first guide wheel (11), a folding pipe body (3) is arranged on the bottom side of the lifting cover (2), a bottom ring (4) is arranged at the bottom of the folding pipe body (3), and connecting blocks (22) are symmetrically arranged on the inner side wall of the bottom ring (4); the middle part of the bottom side of the lifting cover (2) is symmetrically provided with a third shaft seat (15), two second rope shafts (18) are rotatably arranged between the third shaft seats (15), the two second rope shafts (18) rotate at the same speed and in opposite directions, second steel ropes are wound on the outer sides of the second rope shafts (18), two ends of the bottom side of the lifting cover (2) are symmetrically provided with a plurality of fourth shaft seats (19), a second rotating shaft (20) is rotatably arranged between the two fourth shaft seats (19) at the same end, the second rotating shaft (20) is in bearing connection with the fourth shaft seats (19), and the second rotating shafts (20) are distributed at 180 degrees; a second guide wheel (21) is arranged in the middle of the outer side of the second rotating shaft (20), and the second steel cable is connected with a connecting block (22) through the second guide wheel (21); the second cable shafts (18) are in bearing connection with a third shaft seat (15), a transmission case (16) is arranged on the outer side of the third shaft seat (15), the output ends of the transmission case (16) are respectively connected with the two second cable shafts (18), and the input ends of the transmission case (16) are connected with the output ends of a second motor (17); the second motor (17) output end is located in the transmission case (16) and is provided with a first sprocket (24) and a rotating tooth (27), two second rope shaft (18) ends are located in the transmission case (16) respectively and are provided with a second sprocket (25) and a transmission tooth (28), the first sprocket (24) and the second sprocket (25) are in transmission connection through a chain (26), and the rotating tooth (27) is meshed with the transmission tooth (28).
2. The method of using a forged waterproof device according to claim 1, wherein the specific operation steps of the method are as follows:
step one: the top plate (1) is fixed in a factory building and is positioned above the forging machine, when fire alarms in the factory building occur, the spray head starts spraying water at the moment, a first motor (7) on a first shaft seat (5) at the top of the lifting cover (2) works to drive a first cable shaft (6) to rotate, a first steel cable (8) wound on the first cable shaft (6) is discharged, and the discharged first steel cable (8) moves along a first guide wheel (11) on a first rotating shaft (10) of a second shaft seat (9) at the moment to realize downward movement of the lifting cover (2);
Step two: when the lifting cover (2) moves downwards, a second motor (17) on the third shaft seat (15) works to drive a transmission shaft (23) in the transmission box (16) to rotate, so that rotation of a first chain wheel (24) and a rotating tooth (27) is realized, the first chain wheel (24) and the second chain wheel (25) are driven by a chain (26), the rotating tooth (27) and the driving tooth (28) are meshed and driven, and further, synchronous reverse rotation of the second rope shaft (18) is realized, the second rope is discharged, at the moment, the second rope moves along a second guide wheel (21) on a second rotating shaft (20) of the fourth shaft seat (19), and meanwhile, a folding pipe body (3) in a folding state is unfolded under the gravity action of a bottom ring (4) until the lifting cover (2) and the folding pipe body (3) are completely covered on the outer side of the forging machine;
Step three: at the moment, the piston rod is driven to extend through the operation of the pneumatic rod (13) until the piston rod is inserted into the limiting hole (14) of the limiting disc (12), the height of the lifting cover (2) is fixed, and after the fire alarm contacts, the piston rod is contracted, and then the lifting cover (2) and the folding pipe body (3) are recovered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111042179.3A CN113618009B (en) | 2021-09-07 | 2021-09-07 | Forging waterproof device and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111042179.3A CN113618009B (en) | 2021-09-07 | 2021-09-07 | Forging waterproof device and application method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113618009A CN113618009A (en) | 2021-11-09 |
| CN113618009B true CN113618009B (en) | 2024-04-30 |
Family
ID=78389268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111042179.3A Active CN113618009B (en) | 2021-09-07 | 2021-09-07 | Forging waterproof device and application method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113618009B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CA2544395A1 (en) * | 2006-03-31 | 2007-09-30 | James R. Brayshaw | Trunk mate bumper cover |
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|---|---|---|---|---|
| CN205676062U (en) * | 2016-04-15 | 2016-11-09 | 广州海德起重设备有限公司 | A kind of single drum self-stabilization trolley |
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| CN214059702U (en) * | 2020-12-30 | 2021-08-27 | 苏州科宏起重机械有限公司 | Limiting device for small-sized hoisting equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113618009A (en) | 2021-11-09 |
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