CN113952746A - Lifting device for stage performance - Google Patents
Lifting device for stage performance Download PDFInfo
- Publication number
- CN113952746A CN113952746A CN202111294188.1A CN202111294188A CN113952746A CN 113952746 A CN113952746 A CN 113952746A CN 202111294188 A CN202111294188 A CN 202111294188A CN 113952746 A CN113952746 A CN 113952746A
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- China
- Prior art keywords
- wire rope
- lifting
- steel wire
- counterweight
- lifting platform
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63J—DEVICES FOR THEATRES, CIRCUSES, OR THE LIKE; CONJURING APPLIANCES OR THE LIKE
- A63J5/00—Auxiliaries for producing special effects on stages, or in circuses or arenas
- A63J5/02—Arrangements for making stage effects; Auxiliary stage appliances
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- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Abstract
The application discloses a lifting means for stage performance includes: the mounting frame is provided with a lifting channel, a first counterweight channel and a second counterweight channel; a first support roller; a second support roller; the lifting platform is movably arranged on the lifting channel; a first counterweight mounted in the first counterweight passage; the second counterweight is arranged in the second counterweight channel; one end of the first suspension steel wire rope is connected with the lifting platform, and the other end of the first suspension steel wire rope is connected with the first balance weight; one end of the second suspension steel wire rope is connected with the lifting platform, and the other end of the second suspension steel wire rope is connected with the second balance weight; a wire rope reel having a brake device; one end of the traction steel wire rope is connected with the lifting platform, and the other end of the traction steel wire rope bypasses the steel wire rope reel and is connected with the first balance weight; and the mass of the first counterweight and the second counterweight and the mass ratio of the lifting platform provided with the object to be displayed are as follows: 1.03 to 1.15. This application can be through crossing the mode of joining in marriage when driving motor breaks down or the power supply is unusual, can accomplish the lifting action through the manual band-type brake device of opening.
Description
Technical Field
The invention relates to the field of performance equipment, in particular to lifting equipment for stage performance.
Background
During stage performance, lifting equipment is arranged to lift and expose the prepared articles. When carrying out great performance project, if hoisting equipment can not reliably work and promote article, can lead to serious performance accident, influence is great, consequently to the hoisting equipment who is used for great performance project, its reliable promotion is the most crucial, and traditional hoisting equipment just can not realize promoting work when motor trouble or power supply are unusual, and the reliability is relatively poor.
Disclosure of Invention
The invention provides a lifting device for stage performance aiming at the problems.
The technical scheme adopted by the invention is as follows:
a lifting device for stage performance, comprising:
the mounting frame is provided with a lifting channel, a first counterweight channel positioned on one side of the lifting channel and a second counterweight channel positioned on the other side of the lifting channel;
the first support roller is arranged at the upper part or the top end of the mounting rack and is positioned above the first counterweight channel;
the second supporting roller is arranged at the upper part or the top end of the mounting rack and is positioned above the second counterweight channel;
the lifting platform is movably arranged in the lifting channel and is used for installing an object to be displayed;
a first counterweight movably mounted in the first counterweight passage;
a second counterweight movably mounted in the second counterweight passage;
one end of the first hanging steel wire rope is connected with the lifting platform, and the other end of the first hanging steel wire rope bypasses the first supporting roller upwards and then is connected with the first balance weight downwards;
one end of the second suspension steel wire rope is connected with the lifting platform, and the other end of the second suspension steel wire rope is connected with the second balance weight downwards after bypassing the second support roller upwards;
the steel wire rope winding drum is arranged at the lower part or the lower end of the mounting rack and is provided with a manually controlled band-type brake device;
one end of the traction steel wire rope is connected with the lifting platform, and the other end of the traction steel wire rope is upwards connected with the first balance weight after downwards bypassing the steel wire rope winding drum; and
the driving motor is used for driving the steel wire rope winding drum to rotate and driving the lifting platform to lift;
the mass ratio of the mass sum of the first counterweight and the second counterweight to the mass sum of the lifting platform provided with the object to be displayed is as follows: 1.03 to 1.15.
The mass ratio of the mass sum of the first counterweight and the second counterweight of the lifting device to the mass sum of the lifting platform provided with the object to be displayed is as follows: 1.03 ~ 1.15, this kind of mode of crossing joining in marriage can be when driving motor breaks down or the power supply is unusual, can open the band-type brake device through manual, makes the band-type brake device no longer lock the wire rope reel, and the elevating platform and the thing of waiting to demonstrate move upwards under the action of gravity of first counter weight and second counter weight this moment, accomplish the promotion action. The lifting equipment is high in reliability, can effectively prevent performance accidents, and effectively guarantees that objects to be displayed complete lifting actions.
In one embodiment of the present invention, the number of the first counterweight, the second counterweight, the first suspension wire rope, the second suspension wire rope and the traction wire rope is 2; the two first counter weights are respectively positioned at two ends of the lifting platform in the horizontal length direction, and the two second counter weights are respectively positioned at two ends of the lifting platform in the horizontal length direction;
the steel wire rope drum is provided with two drum parts which are coaxially arranged, the two drum parts are connected through a first coupler, a first traction steel wire rope is wound on the first drum part, and a second steel wire rope is wound on the second drum part.
The number of the first counter weight, the second counter weight, the first suspension steel wire rope, the second suspension steel wire rope and the traction steel wire rope is 2, and the first counter weight and the second counter weight are positioned at two ends of the lifting platform in the horizontal length direction, so that the structure can be adapted to a lifting platform with large volume and large mass and an object to be displayed, and the stress is more uniform and reasonable; through the arrangement of the two coaxially arranged reel parts, two traction steel wire ropes can be synchronously controlled through one steel wire rope reel, the reliability is effectively ensured, and the lifting action of the lifting platform is prevented from being influenced due to the fact that the two groups of driving motors are arranged to cause the driving motors to act asynchronously.
In one embodiment of the present invention, the steel wire rope drum is located right below the middle area of the two first counterweights, the drum is horizontally arranged, the lifting device for stage performance further includes two sets of first wheel sets respectively located below the two first counterweights, the first wheel sets include a first pulley whose axis is a vertical line and a second pulley whose axis is a horizontal line, and the traction steel wire rope coming out of the drum first bypasses the first pulley and then bypasses the second pulley, and then upwards connects with the corresponding first counterweights;
the lifting equipment for the stage performance further comprises two sets of second wheel sets, two traction steel wire ropes respectively bypass the corresponding second wheel sets, each second wheel set comprises a third pulley with an axis being a vertical line and a fourth pulley with an axis being a horizontal line, the third pulley is located below the corresponding first counter weight, the fourth pulley is located below the lifting platform, the traction steel wire ropes coming out of the winding drum portion firstly bypass the third pulley and then bypass the fourth pulley, and then upwards are connected with the lifting platform.
In an embodiment of the invention, the first suspension steel wire rope, the second suspension steel wire rope and the traction steel wire rope all include a plurality of independent branch ropes.
Every branch rope homoenergetic independent work just satisfies the atress requirement, can effectively guarantee the reliability through setting up many branch ropes, and basic one divides the rope fracture not to influence lifting means normal work yet.
In one embodiment of the present invention, the driving motor includes a main motor and a backup motor connected to the main motor through a second coupling.
When the main motor fails, the backup motor can drive the steel wire rope roller to rotate, so that the reliable work of the lifting equipment is effectively guaranteed, and the smooth performance is guaranteed.
In one embodiment of the present invention, the lifting platform has a trigger block, and the lifting channel has a travel switch cooperating with the trigger block.
In one embodiment of the present invention, the present invention further comprises a locking mechanism, wherein the locking mechanism comprises:
the slot is arranged on the side part of the lifting platform;
the mounting block is fixed on the side wall of the lifting channel;
the bolt is slidably arranged in the mounting block; and
and the electric push rod is connected with the bolt and used for driving the bolt to be inserted into the slot after the lifting platform rises to the proper position.
The locking mechanism can lock the lifting platform which is lifted in place.
In an embodiment of the invention, two first rollers are installed on the slot at an interval from top to bottom, the plug pin is used for being inserted between the two first rollers, and the head of the plug pin is provided with a chamfer.
The design of the first roller and the chamfer angle facilitates the reliable insertion of the bolt.
In an embodiment of the invention, two ends of the mounting block are respectively provided with a roller group, the roller group includes two second rollers which are opposite and spaced, and the bolt is in rolling fit with the two second rollers of the roller group.
In one embodiment of the present invention, the first roller and the second roller each have an annular groove, and the side wall of the plug is used for being inserted into the corresponding annular groove.
The position of the bolt can be reliably limited by the annular groove without affecting the horizontal movement of the bolt.
The invention has the beneficial effects that: the mass ratio of the mass sum of the first counterweight and the second counterweight of the lifting device to the mass sum of the lifting platform provided with the object to be displayed is as follows: 1.03 ~ 1.15, this kind of mode of crossing joining in marriage can be when driving motor breaks down or the power supply is unusual, can open the band-type brake device through manual, makes the band-type brake device no longer lock the wire rope reel, and the elevating platform and the thing of waiting to demonstrate move upwards under the action of gravity of first counter weight and second counter weight this moment, accomplish the promotion action. The lifting equipment is high in reliability, can effectively prevent performance accidents, and effectively guarantees that objects to be displayed complete lifting actions.
Description of the drawings:
FIG. 1 is a side view of the lifting apparatus when the platform is not lifted;
FIG. 2 is a front view of the lifting platform of the lifting apparatus when not lifted;
FIG. 3 is a side view of the lifting apparatus after the lift platform has been lifted;
FIG. 4 is a side view of the lifting apparatus after the lift platform has been lifted;
FIG. 5 is a drive schematic;
FIG. 6 is another drive schematic;
FIG. 7 is a schematic diagram of the connection of the traction cable from the cable drum to the lift platform;
FIG. 8 is a schematic view of the connection of the traction cable from the cable drum to the lift platform;
FIG. 9 is a schematic view of the connection of the trailing cable from the cable drum to the first counterweight;
FIG. 10 is a schematic view of the connection of the pull cable from the cable drum to the first counterweight;
FIG. 11 is a cross-sectional view of the wire rope drum and drive motor;
fig. 12 is an enlarged view at a in fig. 3.
The figures are numbered:
1. a mounting frame; 2. a lifting channel; 3. a first counterweight passage; 4. a second counterweight passage; 5. a first support roller; 6. a second support roller; 7. a lifting platform; 8. an object to be displayed; 9. a first counterweight; 10. a second counterweight; 11. a first suspension wire rope; 12. a second suspension wire rope; 13. a wire rope drum; 14. a traction wire rope; 15. a drive motor; 16. a drum part; 17. a first coupling; 18. a first pulley; 19. a second pulley; 20. a third pulley; 21. a fourth pulley; 22. a main motor; 23. a second coupling; 24. a backup motor; 25. a trigger block; 26. a travel switch; 27. a locking mechanism; 28. a slot; 29. mounting blocks; 30. a bolt; 31. an electric push rod; 32. a first roller; 33. chamfering; 34. a second roller.
The specific implementation mode is as follows:
the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1 to 5, a lifting device for stage performance comprises:
the mounting frame 1 is provided with a lifting channel 2, a first counterweight channel 3 positioned on one side of the lifting channel 2 and a second counterweight channel 4 positioned on the other side of the lifting channel 2;
the first supporting roller 5 is arranged at the upper part or the top end of the mounting rack 1 and is positioned above the first counterweight channel 3;
the second supporting roller 6 is arranged at the upper part or the top end of the mounting frame 1 and is positioned above the second counterweight channel 4;
the lifting platform 7 is movably arranged in the lifting channel 2, and the lifting platform 7 is used for installing an object 8 to be displayed;
a first counterweight 9 movably mounted in the first counterweight passage 3;
a second counterweight 10 movably mounted in the second counterweight passage 4;
one end of a first suspension steel wire rope 11 is connected with the lifting platform 7, and the other end of the first suspension steel wire rope upwards bypasses the first supporting roller 5 and then is downwards connected with the first balance weight 9;
one end of a second suspension steel wire rope 12 is connected with the lifting platform 7, and the other end of the second suspension steel wire rope upwards bypasses the second support roller 6 and then is downwards connected with a second balance weight 10;
the steel wire rope reel 13 is arranged at the lower part or the lower end of the mounting rack 1 and is provided with a manually controlled brake device;
one end of a traction steel wire rope 14 is connected with the lifting platform 7, and the other end of the traction steel wire rope is upwards connected with the first balance weight 9 after downwards winding around the steel wire rope winding drum 13; and
the driving motor 15 is used for driving the steel wire rope winding drum 13 to rotate and driving the lifting platform 7 to lift;
the mass of the first counterweight 9 and the second counterweight 10 and the mass ratio of the lifting platform 7 provided with the object to be displayed 8 are as follows: 1.03 to 1.15.
The mass of the first counterweight 9 and the second counterweight 10 of the hoisting device and the mass ratio to the lifting platform 7 on which the object to be displayed 8 is mounted are: 1.03 ~ 1.15, this kind of mode of crossing joining in marriage can be when driving motor 15 breaks down or the power supply is unusual, can open the band-type brake device through manual, makes the band-type brake device no longer lock wire rope reel 13, and elevating platform 7 and the thing 8 that waits to demonstrate move upwards under the action of gravity of first counter weight 9 and second counter weight 10 this moment, accomplish the promotion action. The lifting equipment is high in reliability, can effectively prevent performance accidents, and effectively guarantees that the object to be displayed 8 completes lifting action.
As shown in fig. 6, 8, 10 and 11, in the present embodiment, the number of the first balance weight 9, the second balance weight 10, the first suspension wire rope 11, the second suspension wire rope 12 and the traction wire rope 14 is 2; the two first counter weights 9 are respectively positioned at two ends of the lifting platform 7 in the horizontal length direction, and the two second counter weights 10 are respectively positioned at two ends of the lifting platform 7 in the horizontal length direction;
the wire rope reel 13 has two reel portions 16 coaxially provided, the two reel portions 16 are connected by a first coupling 17, a first traction wire rope 14 is wound around the first reel portion 16, and a second wire rope is wound around the second reel portion 16.
The number of the first balance weight 9, the second balance weight 10, the first suspension steel wire rope 11, the second suspension steel wire rope 12 and the traction steel wire rope 14 is 2, and the positions of the first balance weight 9 and the second balance weight 10 are arranged at two ends of the lifting platform 7 in the horizontal length direction, so that the structure can be adapted to the lifting platform 7 with large volume and large mass and the object 8 to be displayed, and the stress is more uniform and reasonable; through the arrangement of the two coaxially arranged drum parts 16, two traction steel wire ropes 14 can be synchronously controlled through one steel wire rope drum 13, the reliability is effectively ensured, and the influence on the lifting action of the lifting platform 7 caused by the asynchronous action of the driving motors 15 due to the arrangement of the two groups of driving motors 15 is prevented.
As shown in fig. 7 to 10, in the present embodiment, the wire rope reel 13 is located right below the middle area of the two first counterweights 9, the reel portion 16 is horizontally arranged, the lifting device for stage performance further includes two sets of first wheel sets respectively located below the two first counterweights 9, each set of first wheel set includes a first pulley 18 whose axis is a vertical line and a second pulley 19 whose axis is a horizontal line, the traction wire rope 14 coming out of the reel portion 16 firstly passes around the first pulley 18, then passes around the second pulley 19, and then is upwardly connected to the corresponding first counterweight 9;
the lifting device for stage performance further comprises two groups of second wheel sets, two traction steel wire ropes 14 respectively pass through the corresponding second wheel sets, each second wheel set comprises a third pulley 20 with an axis being a vertical line and a fourth pulley 21 with an axis being a horizontal line, the third pulleys 20 are located below the corresponding first balance weights 9, the fourth pulleys 21 are located below the lifting platform 7, and the traction steel wire ropes 14 coming out of the winding drum part 16 firstly pass through the third pulleys 20 and then pass through the fourth pulleys 21 and then are upwards connected with the lifting platform 7.
As shown in fig. 1, in the present embodiment, the first suspension wire rope 11, the second suspension wire rope 12 and the traction wire rope 14 each include a plurality of independent branch ropes. Every branch rope homoenergetic independent work just satisfies the atress requirement, can effectively guarantee the reliability through setting up many branch ropes, and basic one divides the rope fracture not to influence lifting means normal work yet.
As shown in fig. 11, in the present embodiment, the driving motor 15 includes a main motor 22 and a backup motor 24 connected to the main motor 22 through a second coupling 23. When the main motor 22 fails, the backup motor 24 can also drive the steel wire rope roller to rotate, so that the reliable operation of the lifting equipment is effectively ensured, and the smooth performance is ensured.
As shown in fig. 12, in the present embodiment, the lift table 7 has a trigger block 25, and the lift path 2 has a travel switch 26 cooperating with the trigger block 25.
As shown in fig. 12, in the present embodiment, the present invention further includes a locking mechanism 27, and the locking mechanism 27 includes:
a slot 28 provided on a side portion of the lift table 7;
a mounting block 29 fixed to a sidewall of the hoistway 2;
a latch 30 slidably mounted in the mounting block 29; and
and the electric push rod 31 is connected with the bolt 30 and is used for driving the bolt 30 to be inserted into the slot 28 after the lifting platform 7 is lifted to the right position.
The lock mechanism 27 can lock the lift table 7 which is raised in position.
As shown in fig. 12, in the present embodiment, two first rollers 32 are installed on the slot 28, the bolt 30 is used for being inserted between the two first rollers 32, and the head of the bolt 30 has a chamfer 33. The design of the first roller 32 and the chamfer 33 facilitates reliable insertion of the bolt 30.
As shown in fig. 12, in the present embodiment, two ends of the mounting block 29 are respectively provided with a roller set, the roller set includes two second rollers 34 that are opposite and spaced, and the bolt 30 is in rolling fit with the two second rollers 34 of the roller set.
In practice, it is preferred that the first roller 32 and the second roller 34 each have an annular groove, and the side wall of the latch 30 is adapted to engage the corresponding annular groove. The position of the plug pin 30 can be reliably defined by the annular groove without affecting its horizontal movement.
In conclusion, the lifting equipment of the embodiment has high reliability and multiple standby designs, can effectively prevent performance accidents, and effectively ensures that the object to be displayed 8 completes lifting action. As shown in fig. 2 and 4, the object to be displayed 8 can be various types of objects, and in a significant performance program, the object to be displayed 8 can be taken as a pressure shaft object to come out, so that the object to be displayed can be effectively ensured to reliably rise through the lifting device of the present application.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings can be directly or indirectly applied to other related technical fields and are included in the scope of the present invention.
Claims (10)
1. A lifting device for stage performance, comprising:
the mounting frame is provided with a lifting channel, a first counterweight channel positioned on one side of the lifting channel and a second counterweight channel positioned on the other side of the lifting channel;
the first support roller is arranged at the upper part or the top end of the mounting rack and is positioned above the first counterweight channel;
the second supporting roller is arranged at the upper part or the top end of the mounting rack and is positioned above the second counterweight channel;
the lifting platform is movably arranged in the lifting channel and is used for installing an object to be displayed;
a first counterweight movably mounted in the first counterweight passage;
a second counterweight movably mounted in the second counterweight passage;
one end of the first hanging steel wire rope is connected with the lifting platform, and the other end of the first hanging steel wire rope bypasses the first supporting roller upwards and then is connected with the first balance weight downwards;
one end of the second suspension steel wire rope is connected with the lifting platform, and the other end of the second suspension steel wire rope is connected with the second balance weight downwards after bypassing the second support roller upwards;
the steel wire rope winding drum is arranged at the lower part or the lower end of the mounting rack and is provided with a manually controlled band-type brake device;
one end of the traction steel wire rope is connected with the lifting platform, and the other end of the traction steel wire rope is upwards connected with the first balance weight after downwards bypassing the steel wire rope winding drum; and
the driving motor is used for driving the steel wire rope winding drum to rotate and driving the lifting platform to lift;
the mass ratio of the mass sum of the first counterweight and the second counterweight to the mass sum of the lifting platform provided with the object to be displayed is as follows: 1.03 to 1.15.
2. The lifting equipment for stage performance as claimed in claim 1, wherein the number of the first counterweight, the second counterweight, the first suspension wire rope, the second suspension wire rope and the traction wire rope is 2; the two first counter weights are respectively positioned at two ends of the lifting platform in the horizontal length direction, and the two second counter weights are respectively positioned at two ends of the lifting platform in the horizontal length direction;
the steel wire rope drum is provided with two drum parts which are coaxially arranged, the two drum parts are connected through a first coupler, a first traction steel wire rope is wound on the first drum part, and a second steel wire rope is wound on the second drum part.
3. The lifting device for stage performance as claimed in claim 2, wherein the wire rope reel is located right below the middle area of the two first counterweights, the reel portion is horizontally arranged, the lifting device for stage performance further comprises two sets of first wheel sets respectively located below the two first counterweights, the first wheel sets comprise a first pulley with a vertical axis and a second pulley with a horizontal axis, and the traction wire rope coming out of the reel portion firstly passes through the first pulley, then passes through the second pulley and then upwards connects with the corresponding first counterweights;
the lifting equipment for the stage performance further comprises two sets of second wheel sets, two traction steel wire ropes respectively bypass the corresponding second wheel sets, each second wheel set comprises a third pulley with an axis being a vertical line and a fourth pulley with an axis being a horizontal line, the third pulley is located below the corresponding first counter weight, the fourth pulley is located below the lifting platform, the traction steel wire ropes coming out of the winding drum portion firstly bypass the third pulley and then bypass the fourth pulley, and then upwards are connected with the lifting platform.
4. The lifting apparatus for stage performance according to claim 2, wherein the first suspension wire rope, the second suspension wire rope and the traction wire rope each comprise a plurality of separate ropes.
5. The lifting apparatus for stage performance according to claim 1, wherein the driving motor includes a main motor and a backup motor connected to the main motor through a second coupling.
6. The lifting device for stage performance as claimed in claim 1, wherein the lifting platform is provided with a trigger block, and the lifting channel is provided with a travel switch matched with the trigger block.
7. The lifting apparatus for stage performance of claim 1, further comprising a locking mechanism, the locking mechanism comprising:
the slot is arranged on the side part of the lifting platform;
the mounting block is fixed on the side wall of the lifting channel;
the bolt is slidably arranged in the mounting block; and
and the electric push rod is connected with the bolt and used for driving the bolt to be inserted into the slot after the lifting platform rises to the proper position.
8. The lifting device for stage performance as claimed in claim 7, wherein the slot is mounted with two first rollers spaced up and down, the bolt is used for being inserted between the two first rollers, and the head of the bolt is chamfered.
9. The lifting device for stage performance as claimed in claim 8, wherein the mounting block is provided at both ends thereof with roller sets, the roller sets include two second rollers disposed oppositely and at an interval, and the latch is in rolling engagement with the two second rollers of the roller sets.
10. The lifting device for stage performance according to claim 9, characterized in that said first and second rollers each have an annular groove, the lateral wall of said bolt being intended to engage in a corresponding annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111294188.1A CN113952746A (en) | 2021-11-03 | 2021-11-03 | Lifting device for stage performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111294188.1A CN113952746A (en) | 2021-11-03 | 2021-11-03 | Lifting device for stage performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113952746A true CN113952746A (en) | 2022-01-21 |
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ID=79469091
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111294188.1A Pending CN113952746A (en) | 2021-11-03 | 2021-11-03 | Lifting device for stage performance |
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| CN (1) | CN113952746A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20216478U1 (en) * | 2002-01-30 | 2003-02-27 | Fördersysteme Engineering GmbH, 64293 Darmstadt | System of wires and pulleys for lifting table used during manufacture of road vehicles has electric motors winding up wires on drums to move block and tackle assembly to operate scissors lift |
| CN209554712U (en) * | 2018-12-26 | 2019-10-29 | 常州戚墅堰机车车辆配件工业有限公司 | A kind of tipper lifting device |
| CN110407060A (en) * | 2018-12-28 | 2019-11-05 | 大连嘉宏至伟新技术开发有限公司 | The adjustable unpowered elevator of balance weight |
| CN211245539U (en) * | 2019-11-22 | 2020-08-14 | 北京新朗景艺术工程设计制作有限公司 | Special stage property lifting device for live-action stage |
| CN211366824U (en) * | 2019-12-27 | 2020-08-28 | 上海微电子装备（集团）股份有限公司 | Lifting device |
-
2021
- 2021-11-03 CN CN202111294188.1A patent/CN113952746A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20216478U1 (en) * | 2002-01-30 | 2003-02-27 | Fördersysteme Engineering GmbH, 64293 Darmstadt | System of wires and pulleys for lifting table used during manufacture of road vehicles has electric motors winding up wires on drums to move block and tackle assembly to operate scissors lift |
| CN209554712U (en) * | 2018-12-26 | 2019-10-29 | 常州戚墅堰机车车辆配件工业有限公司 | A kind of tipper lifting device |
| CN110407060A (en) * | 2018-12-28 | 2019-11-05 | 大连嘉宏至伟新技术开发有限公司 | The adjustable unpowered elevator of balance weight |
| CN211245539U (en) * | 2019-11-22 | 2020-08-14 | 北京新朗景艺术工程设计制作有限公司 | Special stage property lifting device for live-action stage |
| CN211366824U (en) * | 2019-12-27 | 2020-08-28 | 上海微电子装备（集团）股份有限公司 | Lifting device |
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