CN112110373A - Lifting mechanism - Google Patents
Lifting mechanism Download PDFInfo
- Publication number
- CN112110373A CN112110373A CN202010992046.1A CN202010992046A CN112110373A CN 112110373 A CN112110373 A CN 112110373A CN 202010992046 A CN202010992046 A CN 202010992046A CN 112110373 A CN112110373 A CN 112110373A
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- China
- Prior art keywords
- lifting
- lifting platform
- auxiliary
- wire rope
- steel wire
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
- B66F7/0641—Single levers, e.g. parallel links
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
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Abstract
The invention provides a lifting mechanism which comprises a rack, wherein a fixed plate is arranged on the rack, one end of the fixed plate is rotatably connected with the upper end of a first swing rod, the lower end of the first swing rod is rotatably connected with one end of a lifting platform, the other end of the fixed plate is rotatably connected with the upper end of a second swing rod, the lower end of the second swing rod is rotatably connected with the other end of the lifting platform, a parallelogram structure is formed among the fixed plate, the first swing rod, the lifting platform and the second swing rod, a handle is fixed on the lifting platform, the other end of the fixed plate is connected with an upper connecting piece, an upper connecting piece is connected with the upper end of a first spring, the lower end of the first spring is connected with a lower connecting piece, the lower connecting piece is connected with the middle part.
Description
Technical Field
The invention belongs to the technical field of machinery, and relates to a lifting mechanism.
Background
With the development of modern technology, the requirements of people on equipment are higher and higher, which drives us to research some novel equipment to adapt to the use requirements of people on different working environments. In the existing automatic production line, sometimes the mechanical structure at a low position needs to be disassembled, assembled or maintained, the manual operation of bending down or bending over the ground is needed, and the operation is very inconvenient, so that the design of the lifting mechanism is very necessary.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a lifting mechanism which has the characteristic of simplicity and convenience in use.
The purpose of the invention can be realized by the following technical scheme: the utility model provides a lifting mechanism, which comprises a frame and is characterized in that, install the fixed plate in the frame, fixed plate one end and first pendulum rod upper end are rotated and are connected, first pendulum rod lower extreme and lifting platform one end are rotated and are connected, the fixed plate other end and second pendulum rod upper end are rotated and are connected, second pendulum rod lower extreme and lifting platform other end are rotated and are connected, and the fixed plate, first pendulum rod, form parallelogram structure between lifting platform and the second pendulum rod, be fixed with the handle on the lifting platform, the fixed plate other end links to each other with last connecting piece, it links to each other with first spring upper end to go up the connecting piece, first spring lower extreme links to each other with lower connecting piece, lower connecting piece links to each other through adjusting seat and second pendulum rod middle part, still have the locking structure.
Structure more than adopting, through with rack mount required position in the production line, install some mechanical structure in the production line on the elevating platform, under the normal condition, the elevating platform is located lower position, when needing to carry out dismouting or maintenance to mechanical structure, only need through the pulling handle, under the effect of first pendulum rod, second pendulum rod, make the parallel upwards promotion of elevating platform, through locking structure with the elevating platform locking on first pendulum rod, thereby the operator need not to bow to operate, it is simple and convenient to use.
And a lower stroke limiting block is also fixed on the fixing plate.
By adopting the structure, the second swing rod can be limited through the lower stroke limiting block, so that the lower stroke of the lifting platform during downward resetting is limited.
An upper stroke limiting block is further fixed in the middle of the lifting platform.
By adopting the structure, the second swing rod can be limited by the upper stroke limiting block, so that the upper stroke of the lifting platform is limited when the lifting platform is reset downwards.
The handle is L-shaped.
The handle is also provided with a plurality of holes for installation.
By adopting the structure, the position of the handle can be conveniently adjusted through the strip-shaped holes, so that different use requirements can be met.
The locking structure includes the locking piece, one-way protection piece and locating pin, the locating pin is installed at first pendulum rod middle part, locking piece lower extreme and lifting platform middle part are rotated and are connected, the locking piece middle part has the arc wall with locating pin matched with, the locking piece upper end has stirring portion, the locking piece middle part still links to each other with second spring one end, the second spring other end links to each other with the lifting platform other end, the vertical slip setting of one-way protection piece is on the lifting platform, one-way protection piece lower extreme has the work portion of slope, and work portion can contact with stirring portion, one-way antiskid piece upper end has the pull ring, still have the third spring between one-way protection piece.
By adopting the structure, after the lifting platform swings upwards to the extreme position, the one-way protection piece moves upwards through the pull ring, so that the locking piece swings forwards, the arc-shaped groove of the locking piece is clamped outside the positioning pin, the one-way protection piece resets downwards under the action of the third spring, and the one-way protection piece is abutted against the shifting part, so that the lifting platform is firmly positioned through the matching of the locking piece and the positioning pin; when the lifting platform needs to reset, the one-way protection piece moves upwards through the pull ring, the locking piece resets backwards under the elastic action of the second spring, the arc-shaped groove of the locking piece is separated from the positioning pin, and therefore the lifting platform swings downwards to reset under the action of the gravity of the lifting platform and is convenient to lock.
The middle part of the second swing rod is also hinged with a piston rod of a damping cylinder, and a cylinder body of the damping cylinder is hinged with the rack.
By adopting the structure, the lifting platform can slowly move when being reset downwards through the damping cylinder.
The machine frame is also provided with an auxiliary structure, the auxiliary structure comprises a main lifting block, an auxiliary lifting block, a main steel wire rope, an auxiliary steel wire rope and a liquid storage tank, a first water injection cavity is formed in the main lifting block, the main lifting block is connected with one end of the main steel wire rope, the other end of the main steel wire rope is connected with one end of a lifting platform, a second water injection cavity is formed in the auxiliary lifting block, the auxiliary lifting block is connected with one end of the auxiliary steel wire rope, the other end of the auxiliary steel wire rope is connected with the middle part of a one-way protection piece, the auxiliary lifting block is positioned below the main lifting block, the liquid storage tank is fixed on the machine frame and is communicated with the first water injection cavity through a liquid supply pipe, a water pump is arranged on the liquid supply pipe, the top of the first water injection cavity is communicated with the top of the second water injection cavity through a connecting pipe, the bottom of the first water injection cavity is communicated with one end of a, the first swing rod is also provided with a plurality of first guide rings for guiding the main steel wire rope and a plurality of second guide rings for guiding the auxiliary steel wire rope.
When the lifting platform needs to move upwards, water in the liquid storage tank is input into the first water injection cavity of the main lifting block through the water pump, the force required by the upward movement of the lifting platform can be reduced through the main lifting block, after the lifting platform moves upwards to a maximum position, the one-way protection piece moves upwards through the pull ring, the locking piece is buckled with the positioning pin, the lifting platform is positioned, meanwhile, the first water injection cavity in the main lifting block is filled with water, the water overflows into the second water injection cavity of the auxiliary lifting block through the connecting pipe, along with the increase of water amount in the second water injection cavity, the auxiliary lifting block firmly pulls the one-way anti-skid piece downwards through the auxiliary steel wire rope, and therefore the situation that the lifting platform is dismounted or maintained due to the fact that the one-way protection piece slides upwards accidentally, accidental injury is caused can be avoided, and the auxiliary effect is good.
When the one-way protection piece is used, the elasticity of the third spring is small, the one-way protection piece can be reset downwards simply, and meanwhile, an operator can lift the one-way protection piece upwards through the pull ring conveniently.
And the liquid supply pipe is also provided with a flow regulating valve.
Compared with the prior art, the lifting mechanism has the following advantages:
according to the invention, the rack is arranged at a required position in the production line, some mechanical structures in the production line are arranged on the lifting platform, under a normal condition, the lifting platform is positioned at a lower position, when the mechanical structures need to be disassembled or repaired, the lifting platform is lifted upwards in parallel under the action of the first swing rod and the second swing rod only by pulling the handle, and the lifting platform is locked on the first swing rod through the locking structure, so that an operator does not need to bend down to operate, and the use is simple and convenient.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a perspective view of the present invention with parts broken away.
Fig. 3 is a perspective view of the handle of the present invention.
Fig. 4 is a perspective view of the locking member of the present invention.
Fig. 5 is a schematic plan view of the present invention.
Fig. 6 is a partially enlarged view of a portion a in fig. 5.
In the figure, 1, a frame; 2. a fixing plate; 3. an upper connecting piece; 4. a first spring; 5. a lower connecting piece; 6. an adjusting seat; 7. a second swing link; 8. a locking member; 8a, an arc-shaped groove; 8b, a shifting part; 9. an upper stroke limiting block; 10. a lifting platform; 11. a handle; 11a, strip-shaped holes; 12. a first swing link; 13. a liquid storage tank; 14. a water pump; 15. a return pipe; 16. a second valve; 17. an auxiliary lifting block; 18. a liquid supply tube; 19. a first valve; 20. a main pulling block; 21. connecting pipes; 22. an auxiliary steel wire rope; 23. a main wire rope; 24. a downlink path limiting block; 25. a second spring; 26. a one-way shield; 27. a third spring; 28. a pull ring; 29. a second guide ring; 30. positioning pins; 31. a first guide ring; 32. and a damping cylinder.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1-6, the lifting mechanism includes a frame 1, a fixing plate 2 is mounted on the frame 1, and in this embodiment, the fixing plate 2 is mounted on the frame 1 by means of a bolt connection; one end of a fixed plate 2 is rotatably connected with the upper end of a first swing rod 12, the lower end of the first swing rod 12 is rotatably connected with one end of a lifting platform 10, the other end of the fixed plate 2 is rotatably connected with the upper end of a second swing rod 7, the lower end of the second swing rod 7 is rotatably connected with the other end of the lifting platform 10, and a parallelogram structure is formed among the fixed plate 2, the first swing rod 12, the lifting platform 10 and the second swing rod 7; a handle 11 is fixed on the lifting platform 10, and in the embodiment, the handle 11 is fixed on the lifting platform 10 in a bolt connection mode; the other end of the fixed plate 2 is connected with an upper connecting piece 3, the upper connecting piece 3 is connected with the upper end of a first spring 4, the lower end of the first spring 4 is connected with a lower connecting piece 5, the lower connecting piece 5 is connected with the middle part of a second swing rod 7 through an adjusting seat 6, and a locking structure is arranged between the lifting platform 10 and a first swing rod 12.
Adopt this structure, through installing frame 1 in the production line required position, install some mechanical structure in the production line on elevating platform 10, under the normal condition, elevating platform 10 is located lower position, when needing to carry out dismouting or maintenance to mechanical structure, only need through pulling handle 11, under first pendulum rod 12, the effect of second pendulum rod 7, make elevating platform 10 parallel upwards promote, through locking structure with elevating platform 10 locking on first pendulum rod 12, thereby the operator need not to bow to operate, it is simple and convenient to use.
A lower stroke limiting block 24 is also fixed on the fixed plate 2.
By adopting the structure, the second swing rod 7 can be limited by the lower stroke limiting block 24, so that the lower stroke of the lifting platform 10 during downward resetting is limited.
An upper stroke limiting block 9 is further fixed in the middle of the lifting platform 10.
By adopting the structure, the second swing rod 7 can be limited by the upper stroke limiting block 9, so that the upper stroke of the lifting platform 10 during downward reset is limited.
The handle 11 is L-shaped.
The handle 11 also has several strip-shaped holes 11a for mounting, and in this embodiment, the number of the strip-shaped holes 11a is two.
Adopt this structure, can conveniently adjust the position of handle 11 through bar hole 11a to can satisfy different user demands.
The locking structure comprises a locking piece 8, an one-way protection piece 26 and a positioning pin 30, the positioning pin 30 is installed in the middle of the first swing rod 12, the lower end of the locking piece 8 is rotatably connected with the middle of the lifting platform 10, an arc-shaped groove 8a matched with the positioning pin 30 is formed in the middle of the locking piece 8, a stirring part 8b is arranged at the upper end of the locking piece 8, the middle of the locking piece 8 is further connected with one end of a second spring 25, the other end of the second spring 25 is connected with the other end of the lifting platform 10, the one-way protection piece 26 is vertically arranged on the lifting platform 10 in a sliding mode, an inclined working part is arranged at the lower end of the one-way protection piece 26, the working part can be in contact with the stirring part 8 b.
With this structure, after the lifting platform 10 swings upward to the extreme position, the one-way protection member 26 moves upward through the pull ring 28, so that the locking member 8 swings forward, the arc-shaped groove 8a of the locking member 8 is clamped outside the positioning pin 30, the one-way protection member 26 returns downward under the action of the third spring 27, the one-way protection member 26 abuts against the toggle part 8b, and the lifting platform 10 is firmly positioned through the cooperation between the locking member 8 and the positioning pin 30; when the lifting platform 10 needs to be reset, the one-way protection piece 26 moves upwards through the pull ring 28, the locking piece 8 resets backwards under the action of the elastic force of the second spring 25, the arc-shaped groove 8a of the locking piece 8 is separated from the positioning pin 30, and therefore the lifting platform 10 swings downwards to reset under the action of the self gravity of the lifting platform 10, and the locking is convenient.
The middle part of the second swing link 7 is also hinged with a piston rod of a damping cylinder 32, a cylinder body of the damping cylinder 32 is hinged with the frame 1, and in the embodiment, the damping cylinder 32 is an existing product available on the market.
With this structure, the damping cylinder 32 allows the lift table 10 to move slowly when it is returned downward.
The rack 1 is also provided with an auxiliary structure, the auxiliary structure comprises a main lifting block 20, an auxiliary lifting block 17, a main steel wire rope 23, an auxiliary steel wire rope 22 and a liquid storage tank 13, a first water injection cavity is formed inside the main lifting block 20, the main lifting block 20 is connected with one end of the main steel wire rope 23, the other end of the main steel wire rope 23 is connected with one end of the lifting platform 10, a second water injection cavity is formed inside the auxiliary lifting block 17, the auxiliary lifting block 17 is connected with one end of the auxiliary steel wire rope 22, the other end of the auxiliary steel wire rope 22 is connected with the middle part of the one-way protection piece 26, the auxiliary lifting block 17 is positioned below the main lifting block 20, the liquid storage tank 13 is fixed on the rack 1, the liquid storage tank 13 is communicated with the first water injection cavity through a liquid supply pipe 18, the liquid supply pipe 18 is provided with a water pump 14, the top of the first water injection cavity is communicated with the top of the second water injection cavity through, the bottom of the water injection cavity II is communicated with the other end of the return pipe 15, the other end of the return pipe 15 is also provided with a valve II 16, and the first swing rod 12 is also provided with a plurality of guide rings I31 for guiding the main steel wire rope 23 and a plurality of guide rings II 29 for guiding the auxiliary steel wire rope 22.
By adopting the structure, when the lifting platform 10 needs to move upwards, water in the liquid storage tank 13 is input into the first water injection cavity of the main lifting block 20 through the water pump 14, the force required by the upward movement of the lifting platform 10 can be reduced through the main lifting block, after the lifting platform 10 moves upwards to the limit position, the one-way protection piece 26 moves upwards through the pull ring 28, the locking piece 8 is buckled with the positioning pin 30 to position the lifting platform 10, meanwhile, the first water injection cavity in the main lifting block 20 is filled with water and overflows into the second water injection cavity of the auxiliary lifting block 17 through the connecting pipe 21, the auxiliary lifting block 17 firmly pulls the one-way anti-skid piece downwards through the auxiliary steel wire rope 22 along with the increase of the water amount in the second water injection cavity, and therefore, the accidental injury caused by the accidental upward sliding of the one-way protection piece 26 during the dismounting or the maintenance of the lifting platform 10 can be avoided, and the auxiliary effect is good.
In use, the third spring 27 has a smaller spring force, which can provide a simple downward return of the one-way protection member 26, and at the same time, can facilitate the operator to lift the one-way protection member 26 upward through the pull ring 28.
The supply pipe 18 is also provided with a flow regulating valve.
The above components are all standard components or components known to those skilled in the art, and the structure and principle thereof can be known to those skilled in the art through technical manuals or through routine experiments.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (9)
1. The utility model provides a lifting mechanism, which comprises a frame and is characterized in that, install the fixed plate in the frame, fixed plate one end and first pendulum rod upper end are rotated and are connected, first pendulum rod lower extreme and lifting platform one end are rotated and are connected, the fixed plate other end and second pendulum rod upper end are rotated and are connected, second pendulum rod lower extreme and lifting platform other end are rotated and are connected, and the fixed plate, first pendulum rod, form parallelogram structure between lifting platform and the second pendulum rod, be fixed with the handle on the lifting platform, the fixed plate other end links to each other with last connecting piece, it links to each other with first spring upper end to go up the connecting piece, first spring lower extreme links to each other with lower connecting piece, lower connecting piece links to each other through adjusting seat and second pendulum rod middle part, locking structure still has between lifting platform.
2. The lifting mechanism as claimed in claim 1, wherein a lower stroke limiting block is further fixed to the fixing plate.
3. The lifting mechanism of claim 1, wherein an upper stroke limiting block is further fixed to the middle of the lifting platform.
4. A lifting mechanism according to claim 1, wherein the handle is L-shaped.
5. A lifting mechanism as claimed in claim 1, wherein the handle further comprises a plurality of apertures for mounting. .
6. The lifting mechanism as claimed in claim 1, wherein the locking structure comprises a locking member, a one-way protection member and a positioning pin, the positioning pin is installed in the middle of the first swing link, the lower end of the locking member is rotatably connected with the middle of the lifting platform, the middle of the locking member has an arc-shaped groove matched with the positioning pin, the upper end of the locking member has a stirring part, the middle of the locking member is further connected with one end of a second spring, the other end of the second spring is connected with the other end of the lifting platform, the one-way protection member is vertically and slidably arranged on the lifting platform, the lower end of the one-way protection member has an inclined working part, the working part can be in contact with the stirring part, the upper end of the one-.
7. The lifting mechanism as claimed in claim 6, wherein the middle portion of the second swing link is further hinged to a piston rod of a damping cylinder, and a cylinder body of the damping cylinder is hinged to the frame.
8. The lifting mechanism as claimed in claim 7, wherein the frame is further provided with an auxiliary structure, the auxiliary structure comprises a main lifting block, an auxiliary lifting block, a main steel wire rope, an auxiliary steel wire rope and a liquid storage tank, the main lifting block is internally provided with a first water injection cavity, the main lifting block is connected with one end of the main steel wire rope, the other end of the main steel wire rope is connected with one end of the lifting platform, the auxiliary lifting block is internally provided with a second water injection cavity, the auxiliary lifting block is connected with one end of the auxiliary steel wire rope, the other end of the auxiliary steel wire rope is connected with the middle part of the one-way protection member, the auxiliary lifting block is positioned below the main lifting block, the liquid storage tank is fixed on the frame, the liquid storage tank is communicated with the first water injection cavity through a liquid supply pipe, the liquid supply pipe is provided with a water pump, the top of the first water injection cavity is communicated with the top of the second water injection cavity through a, the bottom of the water injection cavity II is communicated with the other end of the return pipe, the other end of the return pipe is also provided with a valve II, and the first swing rod is also provided with a plurality of first guide rings for guiding the main steel wire rope and a plurality of second guide rings for guiding the auxiliary steel wire rope.
9. A lifting mechanism as claimed in claim 1, wherein the supply tube is further provided with a flow control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010992046.1A CN112110373B (en) | 2020-09-18 | 2020-09-18 | Lifting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010992046.1A CN112110373B (en) | 2020-09-18 | 2020-09-18 | Lifting mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112110373A true CN112110373A (en) | 2020-12-22 |
| CN112110373B CN112110373B (en) | 2021-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010992046.1A Active CN112110373B (en) | 2020-09-18 | 2020-09-18 | Lifting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112110373B (en) |
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| CN112110373B (en) | 2021-11-19 |
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