CN218968755U

CN218968755U - Scissor type lifting device

Info

Publication number: CN218968755U
Application number: CN202222893621.XU
Authority: CN
Inventors: 吴佳龙; 胡帅; 王鸿雁; 王振宇; 李富荣; 黄发诚; 娄欣; 黄立锋
Original assignee: China Construction Science and Industry Smart Parking Technology Co Ltd
Current assignee: China Construction Science and Industry Smart Parking Technology Co Ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-05-05
Anticipated expiration: 2032-10-31

Abstract

The utility model discloses a scissor type lifting device, which comprises a mounting seat, a lifting mechanism, a driving mechanism and a supporting seat. The lifting mechanism comprises at least two pairs of lifting units hinged with each other, and one end of the lifting mechanism is installed on the installation seat. The driving mechanism is arranged at the side edge of the mounting seat and acts on at least two pairs of lifting units to drive the lifting mechanism to lift or descend. The supporting seat is arranged at the other end of the lifting mechanism. The shear type lifting device can reduce the driving force required by initial lifting and improve the stability of the device.

Description

Scissor type lifting device

Technical Field

The utility model relates to the technical field of lifting devices, in particular to a shear type lifting device.

Background

The scissor lift is a special overhead working equipment. The lifting platform has a scissor mechanical structure capable of freely stretching, so that the lifting platform has higher stability when lifting and falling; meanwhile, the special scissors structure also provides a wide working platform and higher bearing capacity, so that the high-altitude working range is larger, the high-altitude working efficiency is higher, the safety is stronger, and the scissors structure is suitable for simultaneous operation of multiple people.

In the prior art, a rigid member is generally adopted for hinging a hydraulic lifting platform at a central position, and the lifting function is completed by changing the included angle of a hinged lever mechanism under the driving of a unilateral hydraulic cylinder. When the hydraulic lifting platform lifts an object, the initial transmission angle is smaller, the requirement on the uniformity of the quality distribution of the lifted object is higher, if the quality distribution is uneven, the phenomena of shaking, object overturning and the like can occur due to unbalanced load in the lifting process, meanwhile, the uneven quality distribution of the lifted object can cause the hydraulic lifting platform to generate great noise when lifting up and down, in order to meet the lifting of the heavy-load object, a hydraulic cylinder with a larger size is needed, the instrument provides larger transmission force, the design difficulty is higher, the fluctuation of the transmission force can be increased while the transmission force is increased, and the device is unstable when the initial lifting is performed.

Disclosure of Invention

The present utility model aims to solve, at least to some extent, one of the problems of the prior art. Therefore, the utility model provides the scissor type lifting device which can reduce the driving force required by initial lifting and improve the stability of the device.

A scissor lift apparatus according to an aspect of the present utility model includes: a mounting base; the lifting mechanism comprises at least two pairs of lifting units which are mutually hinged, and one end of the lifting mechanism is arranged on the mounting seat; the driving mechanism is arranged at the side edge of the mounting seat and acts on at least two pairs of lifting units to drive the lifting mechanism to rise or fall; the supporting seat is arranged at the other end of the lifting mechanism.

The scissor type lifting device according to one aspect of the utility model has the following beneficial effects: the driving force required for initial lifting can be reduced, and the stability of the device can be improved.

In some embodiments, the lifting mechanism includes a first lifting unit and a second lifting unit, the first lifting unit and the second lifting unit being hinged to each other in an up-down direction.

In some embodiments, the first lifting unit comprises a first connecting rod and a second connecting rod, the middle parts of the first connecting rod and the second connecting rod are hinged with each other, and an included angle formed between the first connecting rod and the second connecting rod is variable, so that the first lifting unit is provided with a revolute pair; the second lifting unit comprises a third connecting rod and a fourth connecting rod, the middle parts of the third connecting rod and the fourth connecting rod are mutually hinged, and an included angle formed between the third connecting rod and the fourth connecting rod is variable, so that the second lifting unit is provided with a revolute pair.

In some embodiments, a first sliding mechanism is arranged on the mounting seat, and the first sliding mechanism comprises a first sliding rail and a first sliding block; one end of the first connecting rod of the first lifting unit is hinged with the mounting seat, one end of the second connecting rod is hinged with the first sliding block, and the second connecting rod and the first sliding block slide along the first sliding rail together; the support seat is provided with a second sliding mechanism, and the second sliding mechanism comprises a second sliding rail and a second sliding block; one end of the third connecting rod of the second lifting unit is hinged with the supporting seat, one end of the fourth connecting rod is hinged with the second sliding block, and the fourth connecting rod and the second sliding block slide along the second sliding rail together.

In some embodiments, the scissor lift further comprises: the third sliding rail is arranged on the first lifting unit; the transmission piece is hinged to the second lifting unit, one end of the transmission piece is hinged to one end, far away from the mounting seat, of the driving mechanism, the other end of the transmission piece is connected to the third sliding rail in a sliding manner, and the other end of the transmission piece can be separated from the third sliding rail; and the limiting piece is arranged on the second lifting unit and is positioned above the transmission piece along the up-down direction.

In some embodiments, the driving mechanism is a hydraulic cylinder, the bottom of the hydraulic cylinder is hinged to the mounting seat, and the top of a piston rod which moves telescopically in the hydraulic cylinder is hinged to one end of the transmission member.

In some embodiments, the angle between the piston rod and the transmission member ranges from 45 degrees to 120 degrees.

In some embodiments, two of the lifting mechanisms are arranged in parallel and are connected to each other by a connecting member.

In some embodiments, the driving mechanism acts on the connecting piece to drive the two lifting mechanisms to rise or fall.

In some embodiments, the two driving mechanisms respectively act on the two lifting mechanisms to drive the two lifting mechanisms to lift or lower.

Drawings

Fig. 1 is a front view of the scissor lift system of the present embodiment in a stretched state.

Fig. 2 is a front view of the scissor lift arrangement of the present embodiment.

Fig. 3 is a side view of another embodiment of the present embodiment.

Description of the drawings:

100. a mounting base; 110. a first sliding mechanism; 111. a first slide rail; 112. a first slider; 200. a lifting mechanism; 201. a lifting unit; 210. a first lifting unit; 211. a first link; 212. a second link; 220. a second lifting unit; 221. a third link; 222. a fourth link; 400. a driving mechanism; 401. a piston rod; 402. a transmission member; 403. a third slide rail; 404. a limiting piece; 405. a connecting piece; 500. a support base; 510. a second sliding mechanism; 511. a second slide rail; 512. and a second slider.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements 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 utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1 and 2, a scissor lift apparatus according to an aspect of the present utility model includes a mounting base 100, a lift mechanism 200, a driving mechanism 400, and a support base 500. The elevating mechanism 200 includes at least two pairs of elevating units 201 hinged to each other, and one end of the elevating mechanism 200 is installed at the installation base 100 and located under the elevating mechanism 200 to drive the elevating mechanism 200 to rise or fall. The driving mechanism 400 is disposed at a side of the mounting base 100, acts on at least two pairs of lifting units 201, and drives the lifting mechanism 200 to rise or fall. The supporting seat 500 is installed at the other end of the elevating mechanism 200.

Specifically, the lifting mechanism 200 is installed between the mounting base 100 and the supporting base 500, and the lifting mechanism 200 can be lifted or lowered, and when the lifting mechanism 200 is lowered, the space occupied by the lifting mechanism is greatly reduced, and great advantages can be exerted in some narrow spaces. The elevating mechanism 200 is composed of at least two pairs of elevating units 201 hinged to each other, one end of one elevating unit 201 is hinged to one end of the other elevating unit 201, the other end of one elevating unit 201 is connected to the mounting base 100, and the other end of the other elevating unit 201 is connected to the supporting base 500.

The scissor type lifting device according to one aspect of the utility model has the following beneficial effects: the driving force required for initial lifting can be reduced, and the stability of the device can be improved. Specifically, in the prior art, a driving mechanism is disposed on the lifting mechanism 200, for example, on one lifting unit 201 of the lifting mechanism 200, but the above manner of disposing the driving mechanism on the lifting unit 201 results in a smaller initial transmission angle, a larger driving force is required for lifting the lifting mechanism 200, a driving mechanism with a larger driving force is often required if a common driving mechanism is used, the overall structure of the scissor lifting device is excessively large, the cost is increased, and meanwhile, if the driving mechanism with a larger driving force is used, the driving force fluctuation is larger, so that the supporting seat 500 swings with the lifting mechanism 200. If the supporting seat 500 is used for carrying the object, or the supporting seat 500 is used as a stage, the object may fall down or a safety hazard may occur.

In this embodiment, one end of the driving mechanism 400 is disposed on the mounting base 100, the other end acts on the lifting mechanism 200, the initial transmission angle is larger, the driving force required for lifting the lifting mechanism 200 is smaller, lifting is more labor-saving, therefore, the driving mechanism with larger driving force is not required, the cost is reduced, the space required by the scissor lifting device is reduced, driving force fluctuation is not easy to generate due to smaller driving force, and the stability of the lifting mechanism 200 and the supporting base 500 in lifting is ensured.

In some embodiments, the lifting mechanism 200 includes a first lifting unit 210 and a second lifting unit 220, and the first lifting unit 210 and the second lifting unit 220 are hinged to each other in an up-down direction. Specifically, the first lifting unit 210 and the second lifting unit 220 are hinged to each other in the up-down direction, the first lifting unit 210 and the second lifting unit 220 are scissor-type, one end of the first lifting unit 210 is hinged to one end of the second lifting unit 220, the other end of the first lifting unit 210 is connected to the supporting seat 500, the other end of the second lifting unit 220 is connected to the mounting seat 100, the supporting seat 500 can be far away from or close to the mounting seat 100 through stretching or shrinking of the first lifting unit 210 and the second lifting unit 220, and lifting of the supporting seat 500 is achieved.

It will be appreciated that the lifting mechanism 200 may also extend and retract in other directions, and the mounting position of the mounting base 100 may be adjusted according to particular needs, for example, the lifting mechanism 200 may be extended or retracted in a left-right direction, such as a scissor type retractable door or the like.

In some embodiments, the first lifting unit 210 includes a first link 211 and a second link 212, and the middle portions of the first link 211 and the second link 212 are hinged to each other, and an included angle formed between the first link 211 and the second link 212 is variable, so that the first lifting unit 210 has a revolute pair. The second elevating unit 220 includes a third link 221 and a fourth link 222, and the middle portions of the third link 221 and the fourth link 222 are hinged to each other, and an included angle formed between the third link 221 and the fourth link 222 is variable, so that the second elevating unit 220 has a revolute pair. Specifically, the first link 211 and the second link 212 are hinged to each other at the middle portions thereof, and are in an X-shape, both ends of the first link 211 and the second link 212 can rotate around the point where they are hinged to each other, and an included angle between the first link 211 and the second link 212 is variable, and when the lifting mechanism 200 is stretched, an included angle between the first link 211 and the second link 212 is an acute angle, and when the lifting mechanism 200 is contracted, an included angle between the first link 211 and the second link 212 is an obtuse angle. The third link 221 and the fourth link 222 are connected in the same manner as the first link 211 and the second link 212. One ends of the first link 211 and the second link 212 are hinged to one ends of the third link 221 and the fourth link 222, respectively, so that the first elevating unit 210 and the second elevating unit 220 are hinged in the up-down direction, thereby allowing the scissor lift to be freely extended and contracted.

In some embodiments, the mounting base 100 is provided with a first sliding mechanism 110, and the first sliding mechanism 110 includes a first sliding rail 111 and a first sliding block 112; one end of a first link 211 of the first lifting unit 210 is hinged with the mounting seat 100, and one end of a second link 212 is hinged with the first slider 112 and slides along the first slide rail 111 together with the first slider 112; the support base 500 is provided with a second sliding mechanism 510, and the second sliding mechanism 510 includes a second sliding rail 511 and a second sliding block 512; one end of the third link 221 of the second elevating unit 220 is hinged to the support base 500, and one end of the fourth link 222 is hinged to the second slider 512 to slide along the second slide rail 511 together with the second slider 512. Specifically, the distance between the first link 211 and the second link 212 and the distance between the third link 221 and the fourth link 222 connected to the mounting base 100 are changed during the ascending or descending of the elevating mechanism 200, and thus the first sliding mechanism 110 and the second sliding mechanism 510 are respectively provided on the mounting base 100 and the supporting base 500, so that one end of the second link 212 is hinged to the first slider 112 of the first sliding mechanism 110 and one end of the fourth link 222 is hinged to the second slider 512 of the second sliding mechanism 510, so that one ends of the second link 212 and the fourth link 222 can freely slide.

In some embodiments, the scissor lift further comprises: the third sliding rail 403, the third sliding rail 403 is disposed on the first lifting unit 210; the transmission member 402 is hinged to the second lifting unit 220, one end of the transmission member 402 is hinged to one end of the driving mechanism 400 away from the mounting seat 100, the other end of the transmission member 402 is slidably connected to the third sliding rail 403, and the other end of the transmission member 402 can be separated from the third sliding rail 403; the limiting member 404, the limiting member 404 is disposed on the second lifting unit 220, and is located above the driving member 402 along the up-down direction. Specifically, when the driving mechanism 400 assists in driving the lifting mechanism 200 to ascend, the driving mechanism 400 transmits power to the lifting mechanism 200 through the transmission member 402 hinged to the second lifting unit 220, so that the lifting mechanism 200 ascends. One end of the transmission member 402 is hinged to one end of the driving mechanism 400 away from the mounting seat 100, the other end of the transmission member 402 is slidably connected to the third sliding rail 403, and the other end of the transmission member 402 can be disengaged from the third sliding rail 403, so as to form a lever structure. The transmission member 402 is hinged at the position of the second lifting unit 220 as a fulcrum of the lever, and during the lifting process of the lifting mechanism 200, the driving mechanism 400 drives one end of the transmission member 402 to move upwards, and the other end of the transmission member 402 slides on the third sliding rail 403 and gradually breaks away from the third sliding rail 403. When the transmission member 402 moves to contact with the limiting member 404 located above the transmission member 402, the transmission member 402 is blocked by the limiting member 404, the leverage is lost, at this time, the lifting mechanism 200 has been lifted to a certain height, the transmission angle of the lifting mechanism 200 is increased, at this time, a larger transmission force is not required to lift the lifting mechanism 200, and therefore, only the driving mechanism 400 is required to continuously drive the lifting mechanism 200 to lift.

In some embodiments, to better provide the driving force, the driving mechanism 400 is a hydraulic cylinder, the bottom of which is hinged to the mounting 100, and the top of the piston rod 401, which moves telescopically in the hydraulic cylinder, is hinged to one end of the driving member 402.

In some embodiments, the angle between the piston rod 401 and the transmission 402 ranges from 45 degrees to 120 degrees. Specifically, during the process of changing the lifting assembly from the contracted state to the stretched state, the included angle between the piston rod 401 and the transmission member 402 ranges from 45 degrees to 120 degrees, and in the initial lifting stage, the driving mechanism 400 amplifies the lifting force exerted on the lifting assembly by the driving mechanism 400 through leverage, so that the lifting is labor-saving.

Referring to fig. 3, in some embodiments, there are two lift mechanisms 200, and the two lift mechanisms 200 are disposed in parallel and connected to each other by a connector 405. Specifically, one end of one elevating mechanism 200 is installed at one side of the installation base 100, the other elevating mechanism 200 is disposed in parallel with the one elevating mechanism 200 in the vertical direction, one end of the other elevating mechanism 200 is installed at the other side of the installation base 100, and the two elevating mechanisms 200 are connected to each other through a connecting member 405, so that the two elevating mechanisms 200 can drive the support base 500 installed at the two elevating mechanisms 200 to rise or fall synchronously.

In some embodiments, the drive mechanism 400 acts on the link 405 to drive the two lift mechanisms 200 up or down. Specifically, since the two lifters 200 are connected by the connection member 405, the driving mechanism 400 may act on the connection member 405 so that the driving force of the driving mechanism 400 can act on the two lifters 200 at the same time, driving the two lifters 200 to rise or fall at the same time.

In some embodiments, there are two drive mechanisms 400 acting on the two lift mechanisms 200, respectively, to drive the two lift mechanisms 200 up or down. Specifically, the two driving mechanisms 400 may be provided to act on the two elevating mechanisms 200, respectively, to drive the two elevating mechanisms 200, and to drive the two elevating mechanisms 200 to ascend or descend simultaneously at the same driving frequency. It should be understood that, whether one driving mechanism 400 is provided to act on the connecting member 405 or two driving mechanisms are provided to act on the two lifting mechanisms 200 respectively, the driving mechanism can be specifically selected according to actual needs as long as the driving mechanism can drive the two lifting mechanisms 200 simultaneously.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. Shear type elevating gear, its characterized in that includes:

a mounting base;

the lifting mechanism comprises at least two pairs of lifting units which are mutually hinged, and one end of the lifting mechanism is arranged on the mounting seat;

the driving mechanism is arranged at the side edge of the mounting seat and acts on at least two pairs of lifting units to drive the lifting mechanism to rise or fall;

the supporting seat is arranged at the other end of the lifting mechanism.

2. The scissor lift arrangement of claim 1, wherein the lift mechanism includes a first lift unit and a second lift unit, the first lift unit and the second lift unit being hinged to each other in an up-down direction.

3. The scissor lift arrangement of claim 2, wherein the first lift unit includes a first link and a second link, the middle portions of the first link and the second link being hinged to each other, an included angle formed between the first link and the second link being variable, such that the first lift unit has a revolute pair;

the second lifting unit comprises a third connecting rod and a fourth connecting rod, the middle parts of the third connecting rod and the fourth connecting rod are mutually hinged, and an included angle formed between the third connecting rod and the fourth connecting rod is variable, so that the second lifting unit is provided with a revolute pair.

4. The scissor lift arrangement of claim 3, wherein the mount is provided with a first slide mechanism, the first slide mechanism comprising a first slide rail and a first slider;

one end of the first connecting rod of the first lifting unit is hinged with the mounting seat, one end of the second connecting rod is hinged with the first sliding block, and the second connecting rod and the first sliding block slide along the first sliding rail together;

the support seat is provided with a second sliding mechanism, and the second sliding mechanism comprises a second sliding rail and a second sliding block;

one end of the third connecting rod of the second lifting unit is hinged with the supporting seat, one end of the fourth connecting rod is hinged with the second sliding block, and the fourth connecting rod and the second sliding block slide along the second sliding rail together.

5. A scissor lift arrangement as in claim 3, further comprising:

the third sliding rail is arranged on the first lifting unit;

the transmission piece is hinged to the second lifting unit, one end of the transmission piece is hinged to one end, far away from the mounting seat, of the driving mechanism, the other end of the transmission piece is connected to the third sliding rail in a sliding manner, and the other end of the transmission piece can be separated from the third sliding rail;

and the limiting piece is arranged on the second lifting unit and is positioned above the transmission piece along the up-down direction.

6. The scissor lift arrangement of claim 5, wherein the drive mechanism is a hydraulic cylinder, the bottom of the hydraulic cylinder is hinged to the mounting base, and the top of a piston rod that moves telescopically in the hydraulic cylinder is hinged to one end of the transmission member.

7. The scissor lift arrangement of claim 6, wherein an angle between the piston rod and the drive member ranges from 45 degrees to 120 degrees.

8. The scissor lift arrangement of claim 1, wherein two of the lift mechanisms are disposed in parallel and are connected to each other by a connector.

9. The scissor lift arrangement of claim 8, wherein the drive mechanism acts on the link to drive both of the lift mechanisms up or down.

10. The scissor lift arrangement of claim 8, wherein there are two of said drive mechanisms acting on each of said two lift mechanisms to drive both of said lift mechanisms up or down.