CN113772582B - Double-section lifting device - Google Patents
Double-section lifting device Download PDFInfo
- Publication number
- CN113772582B CN113772582B CN202111122699.5A CN202111122699A CN113772582B CN 113772582 B CN113772582 B CN 113772582B CN 202111122699 A CN202111122699 A CN 202111122699A CN 113772582 B CN113772582 B CN 113772582B
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- Prior art keywords
- frame
- wedge block
- wedge
- arm structure
- supporting
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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
- B66F7/065—Scissor linkages, i.e. X-configuration
-
- 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)
- Transmission Devices (AREA)
Abstract
The invention discloses a double-section lifting device which comprises a frame and a wedge block, wherein a slope is formed on the wedge block and is arranged in the frame; the driving mechanism is installed on the frame in a penetrating way and is connected with the wedge-shaped block; the support arm structure comprises a first support rod and a second support rod, the driving mechanism drives the wedge block to horizontally move in the frame to enable a slope of the wedge block to be abutted with the first support rod of the support arm structure so as to drive the support arm structure to move to lift the support panel to a first lifting height, or the driving mechanism drives the wedge block to horizontally move in the frame to enable the wedge block to be abutted with the first support rod of the support arm structure so as to drive the support arm structure to move to lift the support panel to a second lifting height.
Description
Technical Field
The invention relates to the technical field of weight lifting, in particular to a double-section lifting device.
Background
In the prior art, a hydraulic jack is generally used when lifting a heavy object, the hydraulic jack is placed under the heavy object, and the heavy object is lifted, but because the hydraulic jack is generally higher and the distance between some heavy objects and the ground is smaller, the common hydraulic jack cannot be placed between the heavy objects and the ground at all, so that lifting cannot be performed.
To solve the above problems, the prior art adopts a scissor lift device as follows:
1. the Chinese patent discloses a scissor hydraulic lifting machine (application number: CN 201921952045.3), which comprises a base, wherein a group of lifting arm combinations are respectively arranged on the front side and the rear side of the upper part of the base, a material supporting table is arranged on the upper part of each lifting arm combination, each group of lifting arm combination comprises an active lifting arm and a passive lifting arm which are mutually hinged, the two active lifting arms are jointly connected with a thrust disc, the thrust disc is connected with the material supporting table through a first telescopic mechanism, the thrust disc is connected with the base through a second telescopic mechanism, and a group of limiting mechanisms are respectively arranged on the left side and the right side of the upper part of the base. The lifting machine is additionally provided with the thrust disc structure and the limiting structure, so that the shearing type hydraulic lifting with large torque and large stroke can be realized, and the dead point problem in the lower limit of the existing lifting machine is solved.
2. The Chinese patent discloses a scissor type lifting device (application number: CN 201110020449.0), which comprises a base, a scissor type lifting mechanism and a hydraulic master cylinder, wherein the scissor type lifting mechanism and the hydraulic master cylinder are arranged on the base, the hydraulic master cylinder is horizontally arranged on the base, the scissor type lifting mechanism comprises two groups of lifting supports which are in scissor type connection and a workbench frame arranged at the top of the two groups of lifting supports, each group of lifting supports is formed by hinging a plurality of lifting struts in sequence, and the lifting mechanism is used for upwards lifting the scissor type lifting mechanism in the initial stage of lifting.
However, the driving mechanisms all require a large force when in an initial motion state in the actual use process, and the problem of device design is caused by the difficulty of lifting angle.
In view of the foregoing, it is desirable to provide a new dual stage lifting device that overcomes the above-described drawbacks.
Disclosure of Invention
The invention aims to provide a double-section lifting device which can drive a supporting arm structure to move so as to lift a supporting panel to a first lifting height and a second lifting height, so as to lift a weight on the supporting panel; the mode of two-stage speed movement is designed so that the output power of the power piece can be greatly reduced in the starting stage, the problem that the initial lifting force needs to be large is solved, and the force needed to be born in the first stage is saved.
In order to achieve the above object, the present invention provides a dual stage lifting device, comprising a frame 1,
the wedge-shaped block 2 is provided with a slope and is arranged in the frame 1;
the driving mechanism 3 is installed on the frame 1 in a penetrating way and is connected with the wedge-shaped block 2;
the support arm structure 4, the support arm structure 4 comprises a first support rod 41 and a second support rod 42, one end of the first support rod 41 is in sliding connection with the inner wall of the frame 1, the other end of the first support rod 41 is provided with a support panel 5, one end of the second support rod 42 is in rotary connection with the inner wall of the frame 1, the other end of the second support rod 42 is in rotary connection with the first support rod 41,
the driving mechanism 3 drives the wedge block 2 to horizontally move in the frame 1 to enable the slope of the wedge block 2 to be abutted with the first supporting rod 41 of the supporting arm structure 4 so as to drive the supporting arm structure 4 to move to lift the supporting panel 5 to a first lifting height, or the driving mechanism 3 drives the wedge block 2 to horizontally move in the frame 1 to enable the wedge block 2 to be abutted with the first supporting rod 41 of the supporting arm structure 4 so as to drive the supporting arm structure 4 to move to lift the supporting panel 5 to a second lifting height.
In a preferred embodiment, the inner wall of the middle part of the first support bar 41 of the support arm structure 4 is provided with a cam 411, and the driving mechanism 3 can drive the wedge block 2 to move in the frame 1.
In a preferred embodiment, the driving mechanism 3 comprises a power member 31, a reduction gear 32 and a driving member 33; the speed reducing device 32 is connected between the power piece 31 and the driving piece 33, and the driving piece 33 is inserted on the frame 1 and connected with the wedge block 2.
In a preferred embodiment, the driving member 33 includes a screw 331 and a nut 332 sleeved on the screw 331, and one end of the screw 331 is connected to the speed reducer 32.
In a preferred embodiment, a coupling 333 is connected between one end of the screw 331 and the reduction gear 32.
In a preferred embodiment, the screw 331 of the driving member 33 is inserted into the frame 1, and the nut 332 of the driving member 33 is connected to the wedge 2.
In a preferred embodiment, the inner wall of the frame 1 is provided with a sliding rail groove 11, one end of the first support rod 41 slidably connected with the inner wall of the frame 1 is provided with a first pin 412, and the first pin 412 is clamped in the sliding rail groove 11.
In a preferred embodiment, a rolling bearing 413 is disposed on the first pin 412, and the rolling bearing 413 is retained in the slide groove 11.
In a preferred embodiment, the bottom of the wedge 2 is formed with a stop 22, the stop 22 being located at the end of the ramp remote from the wedge 2.
In a preferred embodiment, the bottom of the wedge-shaped block 2 is further formed with a pull-back portion 23, the pull-back portion 23 being located at one end near the slope of the wedge-shaped block 2.
Compared with the prior art, the double-section lifting device provided by the invention has the beneficial effects that:
1) The supporting arm structure can be driven to move to lift the supporting panel to a first lifting height by abutting against the cam through the slope of the wedge block, and the supporting panel can be lifted to a second lifting height by contacting the rolling bearing through the stop part of the wedge block and continuously pushing the rolling bearing until the first supporting rod and the second supporting rod of the supporting rod structure are lifted, so that the supporting panel on the first supporting rod is lifted to the second lifting height to lift the weight on the supporting panel; the mode of two-stage speed movement is designed so that the output power of the power piece can be greatly reduced in the starting stage, and the problem that the initial lifting force needs to be large is solved.
2) The invention is provided with the driving mechanism, has a self-locking function, and can prevent the support panel from suddenly falling under the condition that the power piece fails, thereby avoiding safety accidents.
3) The lifting device is horizontally arranged integrally, the thickness of the lifting device is only 80mm, the lifting device is beneficial to extending into a narrower space for lifting, and the lifting height can reach 400mm.
4) The lifting device utilizes the power piece and the driving piece to drive, the moment of the driving piece is larger, the lifting force can be improved, and the purpose of lifting a weight of 1000kg can be achieved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a perspective view of a dual stage lift provided by the present invention;
FIG. 2 is a partial block diagram of the dual stage lift device shown in FIG. 1;
FIG. 3 is a perspective view of a wedge block of the dual stage lifting device shown in FIG. 1;
fig. 4 is a perspective view of a drive mechanism of the dual stage lift device shown in fig. 1.
Reference numerals in the drawings: 1. a frame; 11. a slide rail groove; 2. wedge blocks; 3. a driving mechanism; 4. a support arm structure; 5. a support panel; 41. a first support bar; 411. a cam; 412. a first pin; 413. a rolling bearing; 414. a second pin; 21. trough passing; 22. a stop portion; 23. a pull-back part; 42. a second support bar; 31. a power member; 32. a speed reducing device; 33. a driving member; 331. a screw; 332. a nut; 333. a coupling.
Detailed Description
In order to make the objects, technical solutions and advantageous technical effects of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and detailed description. It should be understood that the detailed description is intended to illustrate the invention, and not to limit the invention.
It is to be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
It should also be noted that unless explicitly stated or limited otherwise, terms such as "mounted," "connected," "secured," "disposed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. It will be apparent to those skilled in the art that the terms described above have the particular meaning in the present invention, as the case may be.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", or the like, may include one or more such features, either explicitly or implicitly. Furthermore, the meaning of "a plurality of", "a number" means two or more, unless specifically defined otherwise.
Referring to fig. 1, the present invention provides a dual stage lifting device, comprising a frame 1,
the wedge-shaped block 2 is provided with a slope and is arranged in the frame 1;
the driving mechanism 3 is installed on the frame 1 in a penetrating way and is connected with the wedge-shaped block 2;
the support arm structure 4, the support arm structure 4 includes a first support bar 41 and a second support bar 42, one end of the first support bar 41 is slidingly connected with the inner wall of the frame 1, the other end of the first support bar 41 is provided with a support panel 5, one end of the second support bar 42 is rotatably connected with the inner wall of the frame 1, the other end of the second support bar 42 is rotatably connected with the first support bar 41, the support panel 5 is rotatably connected with the first support bar 41,
the driving mechanism 3 drives the wedge block 2 to horizontally move in the frame 1 to enable the slope of the wedge block 2 to be abutted with the first supporting rod 41 of the supporting arm structure 4 so as to drive the supporting arm structure 4 to move to lift the supporting panel 5 to a first lifting height, or the driving mechanism 3 drives the wedge block 2 to horizontally move in the frame 1 to enable the wedge block 2 to be abutted with the first supporting rod 41 of the supporting arm structure 4 so as to drive the supporting arm structure 4 to move to lift the supporting panel 5 to a second lifting height.
In one embodiment, the inner wall of the middle part of the first supporting rod 41 of the supporting arm structure 4 is provided with a cam 411, and the driving mechanism 3 drives the wedge block 2 to move horizontally in the frame 1 so that the slope of the wedge block 2 abuts against the cam 411 on the first supporting rod 41, and the supporting arm structure 4 is driven to move to lift the supporting panel 5 to the first lifting height. Thus, the power required to be output by the driving mechanism 3 at the starting stage can be reduced, and the problem that a large force is required at the initial stage in the lifting process can be solved.
In one embodiment, the driving mechanism 3 includes a power member 31, a speed reduction device 32, and a driving member 33; the speed reducing device 32 is connected between the power piece 31 and the driving piece 33, and the driving piece 33 is inserted on the frame 1 and connected with the wedge block 2.
In one embodiment, the driving member 33 includes a screw 331 and a nut 332 sleeved on the screw 331, and one end of the screw 331 is connected to the speed reducer 32. Thus, when the power member 31 is started, the screw 331 is driven to rotate by the speed reducing device 32, and the nut 332 moves linearly along the screw 331. In this embodiment, the power member 31 is a servo motor, the speed reducer 32 is a speed reducer, and the driving member 33 is a ball screw.
In one embodiment, a coupling 333 is connected between one end of the screw 331 and the speed reducer 32.
In one embodiment, the screw 331 of the driving member 33 is inserted into the frame 1, and the nut 332 of the driving member 33 is connected to the wedge 2.
In one embodiment, a sliding rail groove 11 is formed in the inner wall of the frame 1, a first pin 412 is disposed at one end of the first support rod 41 slidably connected to the inner wall of the frame 1, and the first pin 412 is retained in the sliding rail groove 11. The first support bar 41 can slide back and forth on the inner wall of the frame 1 through the cooperation of the first pin 412 and the slide rail groove 11.
In one embodiment, a rolling bearing 413 is disposed on the first pin 412, and the rolling bearing 413 is retained in the sliding rail groove 11. By such a design, when the first support bar 41 slides back and forth on the inner wall of the frame 1 through the cooperation of the first pin 412 and the slide rail groove 11, the friction force can be reduced by the rolling bearing 413.
In one embodiment, the wedge block 2 is provided with a through groove 21, the nut 332 of the driving member 33 is connected with the wedge block 2, and the screw 331 of the driving member 33 is placed in the through groove 21. Specifically, the through grooves 21 are distributed along the center line of the wedge-shaped block 2, and the screw 331 can be guided by the through grooves 21.
In one embodiment, a stop 22 is formed at the bottom of the wedge block 2, the stop 22 being located at an end of the ramp remote from the wedge block 2, the stop being used to push the rolling bearing 413 into movement within the slide groove 11.
In one embodiment, a pull-back part 23 is further formed at the bottom of the wedge block 2, the pull-back part 23 is located near one end of the slope of the wedge block 2, and the pull-back part 23 is used for pulling the rolling bearing 413 to move in the sliding rail groove 11.
In one embodiment, a second pin 414 is disposed in the middle of the first support rod 41, the other end of the second support rod 42 is rotatably connected to the first support rod 41 through the second pin 414, and the cam 411 is mounted on the second pin 414.
Working principle: when the power member 31 of the driving mechanism 3 is started and drives the screw 331 of the driving member 33 to rotate, the nut 332 of the driving member 33 moves linearly along the screw 331 and pushes the wedge block 2 gradually toward the cam 411 until the slope of the wedge block 2 abuts against the cam 411, so as to drive the support arm structure 4 to move to lift the support panel 5 to the first lifting height.
When the wedge block 2 continues to move rightward, the stopper 22 of the wedge block 2 comes into contact with the rolling bearing 413 at the contact point of the cam 411 and the wedge block 2 reaches the uppermost end of the slope, and continues to push the rolling bearing 413 rightward until the first support bar 41 and the second support bar 42 of the support bar structure stand up, thereby raising the support panel 5 on the first support bar 41 to the second lifting height to lift the weight on the support panel 5.
When the power member 31 of the driving mechanism 3 is started and drives the screw 331 of the driving member 33 to reversely rotate, the nut 332 of the driving member 33 moves linearly along the screw 331 and gradually moves in a direction away from the cam 411 until the pull-back portion 23 of the wedge-shaped block 2 abuts against the rolling bearing 413, so as to drive the support arm structure 4 to lie flat in the frame 1.
The present invention is not limited to the details and embodiments described herein, and thus additional advantages and modifications may readily be made by those skilled in the art, without departing from the spirit and scope of the general concepts defined in the claims and the equivalents thereof, and the invention is not limited to the specific details, representative apparatus and examples shown and described herein.
Claims (8)
1. A two section lifting device which characterized in that: comprises a frame (1),
the wedge-shaped block (2) is provided with a slope and is arranged in the frame (1); a stop part (22) is formed at the bottom of the wedge block (2), the stop part (22) is positioned at one end far away from the slope of the wedge block (2), a pull-back part (23) is also formed at the bottom of the wedge block (2), and the pull-back part (23) is positioned at one end close to the slope of the wedge block (2);
the driving mechanism (3) is installed on the frame (1) in a penetrating way and is connected with the wedge-shaped block (2);
the support arm structure (4), the support arm structure (4) comprises a first support rod (41) and a second support rod (42), one end of the first support rod (41) is in sliding connection with the inner wall of the frame (1), the other end of the first support rod (41) is provided with a support panel (5), one end of the second support rod (42) is in rotary connection with the inner wall of the frame (1), the other end of the second support rod (42) is in rotary connection with the first support rod (41),
the driving mechanism (3) drives the wedge block (2) to move in the frame (1) to enable a slope of the wedge block (2) to be abutted with the first supporting rod (41) of the supporting arm structure (4), so that the supporting arm structure (4) is driven to move to lift the supporting panel (5) to a first lifting height, or the driving mechanism (3) drives the wedge block (2) to move in the frame (1) to enable the wedge block (2) to be abutted with the first supporting rod (41) of the supporting arm structure (4), so that the supporting arm structure (4) is driven to move to lift the supporting panel (5) to a second lifting height.
2. The dual stage lift device of claim 1 wherein: the inner wall in the middle of the first supporting rod (41) of the supporting arm structure (4) is provided with a cam (411), and the driving mechanism (3) can drive the wedge block (2) to move in the frame (1).
3. The dual stage lift device of claim 1 wherein: the driving mechanism (3) comprises a power piece (31), a speed reduction device (32) and a driving piece (33); the speed reducing device (32) is connected between the power piece (31) and the driving piece (33), and the driving piece (33) is inserted on the frame (1) and connected with the wedge-shaped block (2).
4. A dual stage lift apparatus as claimed in claim 3 wherein: the driving piece (33) comprises a screw rod (331) and a nut (332) sleeved on the screw rod (331), and one end of the screw rod (331) is connected with the speed reducer (32).
5. The dual stage lift device of claim 4 wherein: a coupler (333) is connected between one end of the screw rod (331) and the speed reducer (32).
6. The dual stage lift device of claim 4 wherein: the screw rod (331) of the driving piece (33) is inserted on the frame (1), and the nut (332) of the driving piece (33) is connected with the wedge-shaped block (2).
7. The dual stage lift device of claim 1 wherein: the novel sliding rail comprises a frame (1), and is characterized in that a sliding rail groove (11) is formed in the inner wall of the frame (1), a first pin shaft (412) is arranged at one end, which is connected with the inner wall of the frame (1) in a sliding mode, of the first supporting rod (41), and the first pin shaft (412) is clamped in the sliding rail groove (11).
8. The dual stage lift device of claim 7 wherein: the first pin shaft (412) is provided with a rolling bearing (413), and the rolling bearing (413) is clamped in the sliding rail groove (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111122699.5A CN113772582B (en) | 2021-09-24 | 2021-09-24 | Double-section lifting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111122699.5A CN113772582B (en) | 2021-09-24 | 2021-09-24 | Double-section lifting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113772582A CN113772582A (en) | 2021-12-10 |
| CN113772582B true CN113772582B (en) | 2023-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111122699.5A Active CN113772582B (en) | 2021-09-24 | 2021-09-24 | Double-section lifting device |
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| CN (1) | CN113772582B (en) |
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| DE20316905U1 (en) * | 2003-11-04 | 2005-03-17 | Expert Maschb Gmbh | Lifting table with scissors type support arms driven by a cam acting directly on one support arm |
| CN104925693A (en) * | 2015-06-25 | 2015-09-23 | 广东嘉腾机器人自动化有限公司 | Sectional type thrust lifting mechanism |
| CN106241657A (en) * | 2016-08-31 | 2016-12-21 | 芜湖高昌液压机电技术有限公司 | A kind of manufacture method starting rapid lifting machine |
| CN109911806A (en) * | 2019-03-29 | 2019-06-21 | 成都立航科技股份有限公司 | A kind of vertical lifting pitch regulation one lifting mechanism |
| CN210944695U (en) * | 2019-11-13 | 2020-07-07 | 济南舒兹米勒自动化设备有限公司 | Shear type hydraulic lifter |
| CN210943416U (en) * | 2019-10-23 | 2020-07-07 | 无锡真木物流设备有限公司 | Height-adjustable conveying roller |
| CN112279147A (en) * | 2020-10-22 | 2021-01-29 | 太仓成铭液压机械有限公司 | Lifting machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030075657A1 (en) * | 2001-10-18 | 2003-04-24 | Pierre Joubert | Scissors lift with combination wedge and lever mechanism |
-
2021
- 2021-09-24 CN CN202111122699.5A patent/CN113772582B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20316905U1 (en) * | 2003-11-04 | 2005-03-17 | Expert Maschb Gmbh | Lifting table with scissors type support arms driven by a cam acting directly on one support arm |
| CN104925693A (en) * | 2015-06-25 | 2015-09-23 | 广东嘉腾机器人自动化有限公司 | Sectional type thrust lifting mechanism |
| CN106241657A (en) * | 2016-08-31 | 2016-12-21 | 芜湖高昌液压机电技术有限公司 | A kind of manufacture method starting rapid lifting machine |
| CN109911806A (en) * | 2019-03-29 | 2019-06-21 | 成都立航科技股份有限公司 | A kind of vertical lifting pitch regulation one lifting mechanism |
| CN210943416U (en) * | 2019-10-23 | 2020-07-07 | 无锡真木物流设备有限公司 | Height-adjustable conveying roller |
| CN210944695U (en) * | 2019-11-13 | 2020-07-07 | 济南舒兹米勒自动化设备有限公司 | Shear type hydraulic lifter |
| CN112279147A (en) * | 2020-10-22 | 2021-01-29 | 太仓成铭液压机械有限公司 | Lifting machine |
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| CN113772582A (en) | 2021-12-10 |
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