CN220012036U

CN220012036U - Lifting machine

Info

Publication number: CN220012036U
Application number: CN202321460055.1U
Authority: CN
Inventors: 陈托; 戴杰挺; 谷适; 刘飞
Original assignee: Zhejiang Canaan Technology Ltd
Current assignee: Zhejiang Canaan Technology Ltd
Priority date: 2023-06-08
Filing date: 2023-06-08
Publication date: 2023-11-14
Anticipated expiration: 2033-06-08

Abstract

The utility model provides a lifter, which comprises a base, a bracket arranged on the base, a power device and a lifting seat, wherein the lifting seat is driven by the power device to lift along the bracket; according to the scheme, the traditional hydraulic lifting device is improved into the electric push rod lifting device driven by the motor, the problem of oil leakage in hydraulic lifting is fundamentally solved, and the support of the lifting machine is set to be of a nested structure consisting of the upper upright post and the lower upright post, so that the height of the lifting machine can be adjusted according to requirements, and the lifting machine can be set to be in a contracted state when required so as to save space.

Description

Lifting machine

Technical Field

The utility model relates to the field of elevators, in particular to an elevator.

Background

The lifting machine is equipment for lifting the hopper to an appointed position of the equipment and generally comprises a bracket, a hydraulic lifting device and a lifting seat, wherein the hydraulic lifting device is arranged at the bottom of the bracket, the lifting seat vertically moves on the bracket and is driven by the hydraulic lifting device to lift, and a fork frame for forking the hopper is arranged in front of the lifting seat. For example, the applicant has invented a lifting machine (publication number CN 2159335U) of a folding fork frame before, which is arranged at the bottom of a bracket through a hydraulic lifting device, and a lifting seat vertically moves on the bracket and is driven by the hydraulic lifting device to lift.

However, in the use process, part of clients react to the problem of oil leakage of the hoisting machine taking the hydraulic pressure as a power source, the practicability of the hoisting machine is affected, the production and transportation sites are polluted, the height of the hoisting machine is not lower than the height of a platform required to be lifted, and the space is occupied when the hoisting machine is not used, so that the inventor improves the hoisting machine to improve the use experience of clients.

Disclosure of Invention

The utility model aims to overcome the defects and the shortcomings in the prior art, and provides a lifting machine, which adopts the following technical scheme:

the utility model provides a lifting machine, includes the base, sets up support, power device and the lifting seat on the base, the lifting seat is gone up and down along the support by power device drive, power device includes electric putter and the motor of drive electric putter, electric putter sets up in the support and links to each other with the base, the support includes the upper column and the lower stand of nested setting, just the support has the shrink state of upper and lower stand nested coincidence to and the upper and lower stand is kept away from each other's extension state when the extension state, upper column lower extreme is connected with lower stand upper end.

Preferably, the base is provided with an installation cavity, the lower end of the bracket is fixed in the installation cavity, the positioning function of the bracket is achieved, and the bottom of the base is provided with a roller. So that the whole lifting machine can be driven to move by the base.

The base is also provided with a power box, the motor is positioned in the power box, and the power box is provided with a trolley handle.

Preferably, the lifting seat is provided with a fork, and the fork is arranged in a telescopic way relative to the lifting seat; so that the fork frame can be retracted into the lifting seat when not in use, and the space is saved.

Preferably, the top end of the upper upright post is provided with a rotating wheel, and the rotating wheel drives the lifting seat to lift along the track on the bracket through a chain.

Preferably, the electric push rod is provided with a proximity switch, and the proximity switch cuts off the power supply when the position of the push rod exceeds a preset travel; the proximity switch is a mature prior art, also called a non-contact travel switch, which can not only complete travel control and limit protection, but also be a non-contact detection device used for detecting the size of parts, measuring the speed and the like, and can also be used for automatic connection of a variable frequency counter, a variable frequency pulse generator, liquid level control, a processing program and the like. Some electric push rod products are provided with overload automatic protection devices, when the push rod travels to the limit position or the load exceeds the rated thrust by a certain value, the push rod automatically cuts off the power supply to play a role of protection, so that a motor and other components cannot be damaged, but the electric push rod cannot be used as a limit switch in normal operation, and therefore, an external travel limit switch device is required to be additionally arranged on the electric push rod.

Preferably, a stop block is arranged in the lower upright post, and the stop block is positioned on the lifting path of the lifting seat, so that the lifting path of the lifting seat is positioned between the rotating wheel and the stop block; the proximity switch and the stop block form multiple protection, so that personnel injury caused by falling of the lifting seat due to failure of the rotating wheel or the chain is avoided.

The beneficial effects of the utility model are as follows: according to the scheme, the traditional hydraulic lifting device is improved into the electric push rod lifting device driven by the motor, the problem of oil leakage in hydraulic lifting is fundamentally solved, and the support of the lifting machine is set to be of a nested structure consisting of an upper upright post and a lower upright post, so that the height of the lifting machine can be adjusted according to requirements, and the lifting machine can be set to be in a contracted state to save space as required.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that it is within the scope of the utility model to one skilled in the art to obtain other drawings from these drawings without inventive faculty.

FIG. 1 is a schematic view showing the overall structure of embodiment 1 in a contracted state;

FIG. 2 is a schematic view showing the whole structure of embodiment 1 in an extended state;

FIG. 3 is a top view of example 1;

in the figure, the device comprises a 1-base, a 11-mounting cavity, a 12-power box, a 2-support, a 21-upper upright, a 22-lower upright, a 23-rotating wheel, a 3-lifting seat, a 4-electric push rod and a 41-motor.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present utility model more apparent.

The terms of direction and position in the present utility model, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., refer only to the direction or position of the drawing. Accordingly, directional and positional terms are used to illustrate and understand the utility model and are not intended to limit the scope of the utility model.

Example 1

As shown in fig. 1-3, a hoist comprises a base 1, a support 2 arranged on the base 1, a power device and a lifting seat 3, wherein the lifting seat 3 is driven by the power device to lift along the support 2, the power device comprises an electric push rod 4 and a motor 41 for driving the electric push rod 4, the electric push rod 4 is arranged in the support 2 and is connected with the base 1, the support 2 comprises an upper upright 21 and a lower upright 22 which are nested, the support 2 has a contracted state in which the upper upright and the lower upright are nested and coincide, and an extended state in which the upper upright and the lower upright are mutually far away from each other, and the lower end of the upper upright 21 is connected with the upper end of the lower upright 22 in the extended state. The device is in modularized design, the base 1 is used as an installation matrix, the electric control, the power source and the support 2 are installed on the base 1, the electric push rod 4 is installed on the support 2, and the structure can be independently replaced without affecting the use of other components.

Further, the base 1 is provided with an installation cavity 11, the lower end of the bracket 2 is fixed in the installation cavity 11, the positioning function of the bracket is achieved, and the bottom of the base 1 is provided with rollers. The whole elevator can be driven to move by the base, and further, a brake device is further arranged between the base 1 and the roller, so that the roller can not rotate when the base moves to a working position, and the elevator is prevented from moving during working.

The base 1 is also provided with a power box 12, the motor 41 is positioned in the power box 12, and the power box 12 is provided with a trolley handle 5.

The lifting seat 3 is provided with a fork frame 31, and the fork frame 31 is telescopically arranged relative to the lifting seat 3. So that the fork 31 is retracted into the lifting seat 3 when not in use, saving space.

The top end of the upper upright post 21 is provided with a rotating wheel 23, and the rotating wheel 23 drives the lifting seat 3 to lift along a track on the bracket 2 through a chain.

The electric push rod 4 is provided with a proximity switch, and the proximity switch cuts off the power supply when the position of the push rod exceeds a preset travel, so that the electric push rod is stopped rapidly and accurately. The proximity switch belongs to the mature prior art, the cooperation of the proximity switch and the electric push rod can be configured together by a manufacturer during production, and the electric connection and control technology are not described in detail herein; the lower upright 22 is internally provided with a stop block, and the stop block is positioned on the lifting path of the lifting seat 3, so that the lifting path of the lifting seat 3 is positioned between the rotating wheel 23 and the stop block. The proximity switch and the stop block form multiple protection, so that personnel injury caused by falling of the lifting seat due to failure of the rotating wheel or the chain is avoided.

And the operation of the electric push rod is smaller than the hydraulic driving noise, the failure rate is low, and the maintenance cost of a user can be reduced.

The foregoing disclosure is illustrative of the present utility model and is not to be construed as limiting the scope of the utility model, which is defined by the appended claims.

Claims

1. The utility model provides a lifting machine, includes base (1), sets up support (2), power device and the lifting seat (3) on base (1), lifting seat (3) are by power device drive along support (2) lift, its characterized in that: the power device comprises an electric push rod (4) and a motor (41) for driving the electric push rod (4), the electric push rod (4) is arranged in a support (2) and is connected with a base (1), the support (2) comprises an upper stand column (21) and a lower stand column (22) which are arranged in a nested mode, the support (2) is provided with a shrinkage state in which the upper stand column and the lower stand column are nested and coincide, and an extension state in which the upper stand column and the lower stand column are mutually far away from each other, and when in the extension state, the lower end of the upper stand column (21) is connected with the upper end of the lower stand column (22).

2. A hoisting machine as claimed in claim 1, characterized in that: the base (1) is provided with a mounting cavity (11), the lower end of the bracket (2) is fixed in the mounting cavity (11), and the bottom of the base (1) is provided with rollers.

3. A hoisting machine as claimed in claim 2, characterized in that: the base (1) is also provided with a power box (12), the motor (41) is positioned in the power box (12), and the power box (12) is provided with a trolley handle (5).

4. A hoisting machine as claimed in claim 1, characterized in that: the lifting seat (3) is provided with a fork frame (31), and the fork frame (31) is arranged in a telescopic way relative to the lifting seat (3).

5. A hoisting machine as claimed in claim 1, characterized in that: the top end of the upper upright post (21) is provided with a rotating wheel (23), and the rotating wheel (23) drives the lifting seat (3) to lift along a track on the bracket (2) through a chain.

6. A hoisting machine as claimed in claim 5, characterized in that: the electric push rod (4) is provided with a proximity switch, and the proximity switch cuts off the power supply when the position of the push rod exceeds a preset travel.

7. A hoisting machine as claimed in claim 5, characterized in that: the lower upright post (22) is internally provided with a stop block, and the stop block is positioned on the lifting path of the lifting seat (3), so that the lifting path of the lifting seat (3) is positioned between the rotating wheel (23) and the stop block.