CN211867736U - Lifting platform - Google Patents

Abstract

The utility model provides a lifting platform, which comprises a base, a working platform positioned above the base and a lifting mechanism for adjusting the height of the working platform relative to the base; the lifting mechanism comprises at least two vertically arranged adjusting rods, and the base and the working platform are fixedly connected with connecting blocks which correspond to the adjusting rods one to one. The upper end and the lower end of the adjusting rod are both provided with threads, and the upper connecting block and the lower connecting block are both provided with threads correspondingly engaged with the threads at the upper end and the lower end of the adjusting rod; the rotating directions of the threads at the upper end and the lower end of the adjusting rod are opposite; or the screw threads at the upper end and the lower end of the adjusting rod have the same rotating direction and different screw pitches. The lifting platform of the utility model can lead the working platform to ascend or descend relative to the base by rotating the adjusting rod so as to adjust the height of the working platform; and at least two independent adjusting rods are arranged, when the ground surface is uneven or the upper surface of the base is uneven, so that the working platform is inclined, the levelness of the working platform can be adjusted by respectively rotating each adjusting rod.

Description

Lifting platform

Technical Field

The utility model belongs to the technical field of mechanical industry, concretely relates to lifting platform.

Background

The lifting platform is used as common mechanical equipment in different industries. For example, the heat preservation test box is arranged on the lifting platform, and the lifting of the heat preservation test box can be realized through the lifting platform. However, the existing lifting platform generally adopts the following method to realize the lifting function: 1) the height of the working platform is directly adjusted by adopting a vertically arranged air cylinder or hydraulic cylinder, namely, the lifting of the working platform is adjusted by extending or shortening a telescopic shaft; 2) cut fork lift platform, it is including having the fork mechanism of cutting of work end and power end, and the work end is located the top of top power end, and the work end of cutting the fork mechanism is connected with work platform, cuts the telescopic shaft and the shell of pneumatic cylinder respectively connected to two connectors of the power end of fork mechanism, and the telescopic shaft transversely sets up. When the telescopic fork is used, the telescopic shaft is shortened, the two connectors at the power end are close to each other, and the height of the scissor fork mechanism is increased, so that the working platform is lifted; otherwise, the telescopic shaft extends, the two connectors at the power end are far away from each other, and the height of the scissor fork mechanism is reduced, so that the working platform descends.

At that time, the two modes for realizing platform lifting are powered by the air cylinder or the hydraulic cylinder, so that the height of the working platform cannot be finely adjusted, and the actual requirements of users cannot be met; and when work platform inclined, can't realize the adjustment of work platform levelness, need establish leveling device in addition on work platform for the structure is complicated.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving the technical problem who exists among the prior art, the utility model aims at providing a lifting platform to solve the unable fine adjustment work platform's of prior art height and need establish the problem of leveling device in addition.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a lifting platform comprises a base, a working platform positioned above the base and a lifting mechanism for adjusting the height of the working platform relative to the base; elevating system includes the regulation pole of two piece at least vertical settings, has the rigid coupling on base and the work platform and has and adjust the connecting block of pole one-to-one, is connecting block and lower connecting block respectively, adjusts the pole and has one of following structure:

the structure I is as follows: the upper end and the lower end of the adjusting rod are both provided with threads, and the upper connecting block and the lower connecting block are both provided with threads correspondingly engaged with the threads at the upper end and the lower end of the adjusting rod;

the rotating directions of the threads at the upper end and the lower end of the adjusting rod are opposite;

the structure II is as follows: the upper end and the lower end of the adjusting rod are both provided with threads, and the upper connecting block and the lower connecting block are both provided with threads correspondingly engaged with the threads at the upper end and the lower end of the adjusting rod;

the screw threads at the upper end and the lower end of the adjusting rod have the same rotating direction and different screw pitches;

the structure is three: one end of the adjusting rod is provided with a thread, and one connecting block corresponding to the adjusting rod is provided with a thread meshed with the thread of the adjusting rod; the other end of the adjusting rod is connected with the other connecting block corresponding to the adjusting rod in a circumferential rotating way and is fixedly connected in the axial direction.

In the technical scheme, the working platform is lifted or lowered relative to the base by rotating the adjusting rod, so that the height of the working platform relative to the base is adjusted according to actual requirements; and at least two independent adjusting rods are arranged, when the ground surface is uneven or the upper surface of the base is uneven, so that the working platform is inclined, the levelness of the working platform can be adjusted by respectively rotating each adjusting rod.

The utility model discloses a adjust the pole not only can adjust work platform's height, still can adjust work platform's levelness.

The utility model discloses an in the preferred embodiment, all seted up the spanner connecting hole on the lateral wall of adjusting the pole. Therefore, people can insert a wrench (such as a steel roller or a steel pipe) into the wrench connecting hole, and more labor is saved by rotating the wrench to rotate the adjusting rod.

The utility model discloses an among the preferred embodiment, in the third structure, the one end of adjusting the pole and not establishing the screw thread has outer loop platform, the connecting block that corresponds with it have with outer loop platform complex inner ring groove, adjust the pole and pass through outer loop platform and inner ring groove and connecting block circumferential direction and be connected and axial rigid coupling. The outer ring platform of the adjusting rod is clamped in the inner ring groove of the upper connecting block and can rotate in the inner ring groove, and the outer ring platform and the inner ring groove are structurally rotated and axially fixedly connected, so that the structure is simple.

In a preferred embodiment of the present invention, in the first structure, the thread pitches of the threads at the upper and lower ends of the adjusting rod are the same or different.

In a preferred embodiment of the present invention, the thread on the adjusting lever is an external thread or an internal thread.

In another preferred embodiment of the present invention, a shock absorber is fixedly connected to the lower end surface of the base. The shock absorber is used for reducing the vibration of the working platform.

In another preferred embodiment of the present invention, the damper is a rubber cushion or a spring damper. The price is cheap, and the shock attenuation is effectual.

In another preferred embodiment of the invention, the number of adjusting rods is two, three or four.

The beneficial effects of the above technical scheme are: additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a lifting platform according to a first embodiment of the present application.

Fig. 2 is a schematic structural diagram of a lifting platform according to a third embodiment of the present application.

Reference numerals in the drawings of the specification include: the device comprises a base 10, a working platform 20, an adjusting rod 31, a first thread 311, a second thread 312, a wrench connecting hole 313, an outer ring table 314, a lower connecting block 32, an upper connecting block 33 and a shock absorber 40.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "vertical", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, mechanically or electrically connected, or may be connected between two elements through an intermediate medium, or may be directly connected or indirectly connected, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.

Example one

This embodiment provides a lifting platform, as shown in fig. 1, in a preferred embodiment of the present invention, it includes a base 10, a working platform 20 located above the base 10, and a lifting mechanism for adjusting the height of the working platform 20 relative to the base 10, and the base 10 is fixed on the ground. The lifting mechanism comprises at least two vertically arranged adjusting rods 31, such as two, three or four, preferably, the number of the adjusting rods 31 is three, a triangular structure is formed, and the stability is good.

The base 10 and the working platform 20 are fixedly connected with connecting blocks, such as welding or bolt connection, corresponding to the adjusting rods 31, and the connecting blocks are respectively an upper connecting block 33 and a lower connecting block 32. The upper end and the lower end of the adjusting rod 31 are both provided with threads, the upper connecting block 33 and the lower connecting block 32 are both provided with threads correspondingly meshed with the threads at the upper end and the lower end of the adjusting rod 31, and the rotating directions of the threads at the upper end and the lower end of the adjusting rod 31 are opposite. The number of the adjusting rods 31 is at least two, so that the circumferential rotation of the working platform 20 can be limited, and the working platform 20 is prevented from rotating relative to the base 10.

Specifically, as shown in fig. 1, for example, the thread at the lower part of the adjusting rod 31 is a first thread 311, the thread at the upper part of the adjusting rod 31 is a second thread 312, and the rotation directions of the second thread 312 and the first thread 311 are opposite, for example, the first thread 311 is right-handed, and the second thread 312 is left-handed. The lower connecting block 32 is provided with a third thread engaged with the first thread 311, and the upper connecting block 33 is provided with a fourth thread engaged with the second thread 312. In the present embodiment, the pitches of the first thread 311 and the second thread 312 are the same or different, and the first thread 311 and/or the second thread 312 are external threads or internal threads, for example, when the first thread 311 is an external thread, the third thread is an internal thread engaged with the external thread. As shown in fig. 1, the first and second threads 311, 312 are both external threads.

When it is desired to raise the work platform 20, one rotates the adjustment lever 31 counterclockwise (from the top in fig. 1), unscrewing the first screw 311 and the third screw, and simultaneously unscrewing the second screw 312 and the fourth screw. The lower end of the adjusting rod 31 moves upwards relative to the lower connecting block 32 to enable the first thread 311 to extend upwards out of the lower connecting block 32, so that the working platform 20 is lifted; the upper end of the adjustment rod 31 moves downward relative to the upper connecting block 33 to extend the second screw 312 downward out of the upper connecting block 33, and also to raise the work platform 20. Similarly, when the work platform 20 needs to be lowered, the user rotates the adjusting rod 31 clockwise (as viewed from the top in fig. 1), and tightens the first screw 311 and the third screw, and tightens the second screw 312 and the fourth screw; the work platform 20 is lowered by extending the first screw 311 downward into the lower connecting block 32 and extending the second screw 312 upward into the upper connecting block 33.

The utility model discloses a lifting platform adjusts pole 31 so that work platform 20 rises or descends for base 10 through rotating to according to actual need, adjust the height that is located the proof box on work platform 20. Because at least two independent adjusting rods 31 are arranged, when the working platform 20 is inclined due to uneven ground surface or uneven upper surface of the base 10, the levelness of the working platform 20 can be adjusted by respectively rotating each adjusting rod 31.

In another preferred embodiment, a wrench connecting hole 313 is formed on a side wall of each adjusting rod 31, the wrench connecting hole 313 penetrates through the side wall of the adjusting rod 31, and the wrench connecting hole 313 is located above the first thread 311.

In another preferred embodiment, the bottom end surface of the base 10 is fixedly connected with a shock absorber 40, for example, the base 10 has four supporting legs, each supporting leg is fixedly connected with a shock absorber 40, for example, a snap connection, the shock absorber 40 may be, but is not limited to, a rubber shock pad or a spring shock absorber in the prior art, the shock absorber 40 is in the prior art, and the structure thereof is not described herein again.

Example two

The principle of the present embodiment is substantially the same as that of the first embodiment, except that in the present embodiment, the first thread 311 and the second thread 312 have the same direction of rotation, but the pitches of the first thread 311 and the second thread 312 are different. For example, the first thread 311 and the second thread 312 are both right-handed, and the pitch of the first thread 311 is greater than the pitch of the second thread 312.

One rotates the adjustment lever 31 counterclockwise (from the top in fig. 1), unscrewing the first 311 and third threads, while screwing the second 312 and fourth threads. The lower end of the adjusting rod 31 moves upwards relative to the lower connecting block 32 to enable the first thread 311 to extend upwards out of the lower connecting block 32, so that the working platform 20 is lifted; the upper end of the adjustment rod 31 moves upward relative to the upper connecting block 33 such that the second screw 312 extends upward into the upper connecting block 33, thereby lowering the work platform 20. Since the pitch of the first screw 311 is greater than the pitch of the second screw 312, during the counterclockwise rotation of the adjustment lever 31, the length of the first screw 311 extending upward out of the lower connection block 32 is greater than the length of the second screw 312 extending upward into the upper connection block 33, that is, the adjustment lever 31 and the lower connection block 32 raise the working platform 20 by a distance greater than the distance of the adjustment lever 31 and the upper connection block 33 lowering the working platform 20, thereby raising the working platform 20 as a whole. Similarly, one turns the adjustment lever 31 clockwise (as viewed from above in fig. 1), tightening the first thread 311 and the third thread, while loosening the second thread 312 and the fourth thread; the first screw 311 is downwardly extended into the lower connecting block 32 while the second screw 312 is downwardly extended into the upper connecting block 33, and the length of the first screw 311 downwardly extended into the lower connecting block 32 is greater than the length of the second screw 312 downwardly extended out of the upper connecting block 33, thereby lowering the working platform 20 as a whole.

EXAMPLE III

The structure principle of this embodiment is basically the same as that of the first and second embodiments, but differs in that in this embodiment, one end of the adjustment lever 31 has a screw thread, and the other end is not provided with a screw thread. As shown in fig. 2, the lower end of the adjusting rod 31 has a thread, which may be an internal thread or an external thread, and the lower connecting block 32 has a thread engaged with the thread at the lower end of the adjusting rod 31; the upper end of the adjusting rod 31 is connected with the upper connecting block 33 in a circumferential rotating way and is fixedly connected with the upper connecting block in an axial direction.

As shown in fig. 2, the specific connection mode between the upper end of the adjusting rod 31 and the upper connection block 33 is as follows: the upper end of the adjusting rod 31 penetrates into the upper connecting block 33, the upper end of the adjusting rod 31 is provided with an outer annular table 314, the upper connecting block 33 is provided with an inner annular groove matched with the outer annular table 314, and the outer annular table 314 of the adjusting rod 31 is clamped in the inner annular groove of the upper connecting block 33 and can rotate in the inner annular groove; thereby the adjusting rod 31 is connected with the upper connecting block 33 in a circumferential rotation way and is fixed in an axial direction through the outer ring platform 314 and the inner ring groove. In the present embodiment, the upper connecting block 33 is composed of left and right two parts, thereby facilitating the snap-fitting of the outer ring table 314 of the adjusting lever 31 into the inner ring groove of the upper connecting block 33.

It should be noted that, in practice, the thread on the adjusting rod 31 of the present embodiment may be arranged at the upper end of the adjusting rod 31, and the lower end of the adjusting rod 31 is connected with the lower connecting block 32 in a circumferential rotation manner and is axially fixed.

In the description herein, reference to the description of the terms "preferred embodiment," "one embodiment," "some embodiments," "an example," "a specific example" or "some examples" or the like 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 invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. 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 invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (8)

1. A lifting platform is characterized by comprising a base, a working platform positioned above the base and a lifting mechanism for adjusting the height of the working platform relative to the base; elevating system includes the regulation pole of two piece at least vertical settings, base and work platform go up have the rigid coupling have with adjust the connecting block of pole one-to-one, be connecting block and lower connecting block respectively, it has one of following structure to adjust the pole:

the structure I is as follows: the upper end and the lower end of the adjusting rod are both provided with threads, and the upper connecting block and the lower connecting block are both provided with threads correspondingly meshed with the threads at the upper end and the lower end of the adjusting rod;

the turning directions of the threads at the upper end and the lower end of the adjusting rod are opposite;

the structure II is as follows: the upper end and the lower end of the adjusting rod are both provided with threads, and the upper connecting block and the lower connecting block are both provided with threads correspondingly meshed with the threads at the upper end and the lower end of the adjusting rod;

the screw threads at the upper end and the lower end of the adjusting rod have the same rotating direction and different screw pitches;

the structure is three: one end of the adjusting rod is provided with a thread, and a corresponding connecting block is provided with a thread meshed with the thread of the adjusting rod; the other end of the adjusting rod is connected with the other connecting block corresponding to the adjusting rod in a circumferential rotating mode and is fixedly connected with the adjusting rod in the axial direction.

2. The lifting platform of claim 1, wherein the side walls of the adjustment rods are provided with wrench attachment holes.

3. The lifting platform of claim 1, wherein in the third configuration, the end of the adjusting rod without threads has an outer ring platform, the corresponding connecting block has an inner ring groove matching with the outer ring platform, and the adjusting rod is connected with the connecting block in a circumferential rotation manner and is axially fixed through the outer ring platform and the inner ring groove.

4. The elevating platform as claimed in claim 1, wherein in the first configuration, the pitch of the threads on the upper and lower ends of said adjustment rod is the same or different.

5. The elevating platform as set forth in claim 1, wherein said adjustment rod is threaded externally or internally.

6. The elevating platform as set forth in claim 1, wherein a shock absorber is secured to a lower end surface of said base.

7. A lifting platform as claimed in claim 6, wherein the shock absorber is a rubber shock pad or a spring shock absorber.

8. A lifting platform as claimed in any one of claims 1 to 7, wherein the number of adjustment bars is two, three or four.

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