CN219297102U

CN219297102U - Aerial working platform

Info

Publication number: CN219297102U
Application number: CN202320548440.5U
Authority: CN
Inventors: 任蒙恩; 王珂; 康海; 赵栋; 何晓丹; 杨文博; 宁利恒; 陈金柱; 赵灿
Original assignee: Henan Huichuang Industrial Co ltd
Current assignee: Henan Huichuang Industrial Co ltd
Priority date: 2023-03-21
Filing date: 2023-03-21
Publication date: 2023-07-04
Anticipated expiration: 2033-03-21

Abstract

The application discloses aerial work platform aims at solving the problem that the existing hydraulic drive scissor type aerial work platform has the risk of deformation and fracture of a scissor unit after long-time use. The lifting driving device comprises a rotating disc fixedly connected with the movable base through a plane bearing, a sliding block which is arranged on the rotating disc and correspondingly slides along the sliding rail, a limiting piece fixedly connected with the movable base and used for limiting the sliding block in the corresponding diameter direction of the rotating disc, a driving motor fixedly connected with the movable base and arranged above the rotating disc, and a sliding rod fixedly connected with the sliding block and correspondingly hinged with the scissor lifting assembly; the driving motor is in transmission connection with the rotating disc. The aerial working platform has the advantages of stable lifting, no involvement on the articulated part of the scissor unit and the like.

Description

Aerial working platform

Technical Field

The application relates to the technical field of lifting operation equipment, in particular to an aerial operation platform.

Background

The aerial work platform is a movable aerial work product meeting aerial work demands of various industries, and a scissor type lifting structure arranged at the bottom of the aerial work platform is often adopted to realize lifting of the aerial work platform. The shearing fork type lifting structure is formed by overlapping and assembling the shearing fork rods which are mutually hinged in a crossing way one by one way, the shearing fork rod at the bottommost layer is hinged on a sliding shaft, two ends of the sliding shaft are clamped on clamping seats at two sides of the chassis, and the sliding shaft can slide back and forth on the chassis along the clamping seats to match up the up-down lifting of the shearing fork rods.

A scissor lift aerial work platform (CN 103382006 a) known to the inventors discloses a hydraulically driven lifting structure, under which a plurality of layers of scissor units are arranged, the scissor units are hinged to each other, and then the scissor units are lifted layer by two hydraulic cylinders, so that the platform is lifted.

However, in the process of implementing the technical solution in the embodiment of the present application, the present inventors have found that at least the following technical problems exist in the above technology: when the aerial working platform is initially lifted, as the shearing fork units are mutually attached, the included angle between the hydraulic oil cylinder and the horizontal direction is too small, and then when the hydraulic oil cylinder stretches out to drive the working platform to lift, the component force of the hydraulic oil cylinder in the horizontal direction is larger, the component force for lifting the working platform in the vertical direction is smaller, and the supporting points at the two ends of the hydraulic oil cylinder are respectively positioned at the hinging positions of the shearing fork units, so that the component force in the horizontal direction easily causes adverse effects on the shearing fork units and the hinging parts of the shearing fork units, and the shearing fork units deform or even break along with the increase of the using times.

The information disclosed in this background section is only for enhancement of understanding of the background of the disclosure and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is well known to a person skilled in the art.

Disclosure of Invention

In view of at least one of the above technical problems, the present disclosure provides an aerial work platform, which aims to solve the problem that the existing hydraulically driven scissor type work platform has a risk of deformation and fracture of a scissor unit after long-time use.

According to one aspect of the disclosure, an aerial working platform is provided, which comprises a movable base, a lifting driving device, a scissor lifting assembly, a working platform, a rotating disc, a sliding block, a limiting piece, a driving motor and a sliding rod, wherein the scissor lifting assembly is arranged on the movable base and is composed of a plurality of scissor units; the driving motor is in transmission connection with the rotating disc.

In some embodiments of the disclosure, the slider is provided with a groove for clamping on the sliding rail.

In some embodiments of the disclosure, the sliding blocks are correspondingly clamped between adjacent tracks of the spiral linear slide rail.

In some embodiments of the disclosure, the limiting piece includes two limiting arms parallel to the corresponding diameter direction of the rotating disc, and a fixing arm for fixing the limiting arm at the corresponding position of the movable base; the length of the limiting arm is matched with the starting position and the ending position of the sliding rail so as to cover the sliding rail.

In some embodiments of the present disclosure, the sliding rod is connected with the sliding block by a corresponding spline or flat key.

In some embodiments of the disclosure, the driving motor is fixedly connected with the moving base through a motor fixing frame.

In some embodiments of the disclosure, the driving motor rotating shaft is perpendicular to the rotating disc, an internal gear is fixedly arranged at the center of the rotating disc, and an external gear matched with the internal gear is correspondingly fixed at the end part of the driving motor rotating shaft.

In some embodiments of the disclosure, a balancing slider correspondingly sliding along the sliding rail is disposed on the opposite side of the slider on the rotating disc, and the balancing slider is fixedly connected with the moving base through a slider fixing frame.

One or more technical solutions provided in the embodiments of the present application at least have the following technical effects or advantages: due to the adoption of the sliding block sliding along the spiral linear sliding rail on the surface of the rotating disc and the corresponding sliding block limiting piece, when the motor drives the rotating disc to rotate, the sliding block can reciprocate in the diameter direction of the rotating disc under the limit of the limiting piece, so that a sliding rod fixedly connected with the sliding block can be driven to reciprocate in the horizontal direction, the aim of expanding or recovering the scissor lifting assembly is fulfilled, and the lifting of the operating platform is realized; in addition, the sliding block provides force in the horizontal direction at the end head of the scissor lifting assembly, so that the adverse effects on the structure and the hinging reliability of each scissor unit caused by the fact that the traditional hydraulic oil cylinder generates horizontal component force at the hinging position of each scissor unit of the scissor lifting assembly are avoided.

Drawings

Fig. 1 is a schematic structural diagram of an aerial platform according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a rotating disc according to an embodiment of the present application.

In the above figures, 1 is a mobile base, 10 is a clamping seat, 2 is a scissor lifting assembly, 3 is an operation platform, 4 is a rotating disc, 40 is a sliding rail, 5 is a sliding block, 6 is a limiting piece, 7 is a sliding rod, 8 is a driving motor,

Detailed Description

In the description of the present application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "vertical," "horizontal," "clockwise," "counterclockwise," etc. indicate or refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application. Reference to "connected" and "coupled" in this application includes both direct and indirect connections (couplings), unless specifically stated otherwise.

For better understanding of the technical solutions of the present application, the following detailed description will refer to the accompanying drawings and specific embodiments.

The embodiment discloses an aerial working platform, referring to fig. 1, which comprises a movable base 1, a scissor lifting assembly 2, a working platform 3 and a lifting driving device, wherein the movable base 1 is used for integrally moving the aerial working platform similar to the existing aerial working platform, so that the conversion of working sites is facilitated; the movable base 1 is provided with a scissor lifting assembly 2 which comprises a plurality of X-shaped scissor units hinged in sequence, rotation of each scissor unit around a central hinge point and transmission among adjacent scissor units are realized by utilizing quadrilateral instability, so that unfolding and recovery of the scissor lifting assembly 2 are realized, and lifting of an operation platform arranged at the top of the scissor lifting assembly 2 is driven.

The existing lifting driving device for the aerial work platform adopts a hydraulic cylinder, and a connecting rod is arranged at the hinging position between each scissor unit at the corresponding height on two sides and is hinged with the hydraulic cylinder among the connecting rods at different heights, so that when the hydraulic cylinder stretches out, the distance between the connecting rods is continuously increased to further push the scissor lifting assembly to be unfolded, but in the starting process, the component force of the hydraulic cylinder in the initial stage, which is inferred to be in the horizontal direction, is larger, the component force in the vertical direction is smaller, the change of the distance between the connecting rods, namely the unfolding of the scissor lifting assembly mainly depends on the component force in the vertical direction, and the component force in the horizontal direction can lead to the deformation or fracture of the hinge part of the scissor unit to influence the service life of the scissor lifting unit.

Specifically, referring to fig. 2, the upper surface of the rotating disc 4 is provided with equidistant spiral linear sliding rails 40, and a sliding block 5 is provided in cooperation with the sliding rails 40, in this embodiment, the sliding block 5 is clamped between adjacent rails of the sliding rails 5, and is attached to the upper surface of the rotating disc 4 and slides on two adjacent side walls of the sliding rails 40, in other embodiments, a groove matched with the outline of the sliding rails is provided at the bottom of the sliding block, and the sliding block is clamped on the sliding rails through the groove and moves along the sliding rails. Further, since the slide rail 40 is in an equidistant spiral line shape, when the slide block 5 slides along the slide rail 40 at uniform speed, the distance between the slide block 5 and the center of the rotating disk 40 increases or decreases at uniform speed.

In order to enable the position change of the sliding block 5 to drive the scissor lifting assembly 2 to be unfolded or recovered, in the embodiment, the rotating disc 40 is fixedly connected with the movable base 1 through a plane bearing, wherein the plane bearing comprises an upper end face and a lower end face, the lower end face of the plane bearing is fixedly welded with the movable base 1, the upper end face of the plane bearing is fixedly welded with the rotating disc 40, and therefore the rotating disc can rotate relative to the movable base 1; in addition, a limiting piece 6 fixedly connected with the movable base 1 is arranged, the limiting piece comprises two limiting arms and a fixed arm for fixing the limiting arms on the movable base, the limiting arms extend to the upper part of the rotating disc from the outside of the rotating disc, the two limiting arms are arranged in parallel, a symmetrical central line between the two limiting arms corresponds to a diameter of the rotating disc 4 in parallel, and the distance between the two limiting arms is matched with the sliding block 5 so as to limit the sliding block 5; therefore, through the rotating disc 4 rotating relative to the movable base 1 and the two limiting arms fixedly connected between the fixed arms and the movable base, the sliding block clamped between the two limiting arms moves along the corresponding diameter direction of the limiting arms, namely the rotating disc, under the rotation of the rotating disc 4, and the reciprocating motion of the sliding block 5 along the linear direction of the limiting arms is realized.

In this example, the two sides of the base are respectively provided with a clamping seat 10, see fig. 1, the scissor lifting assembly 2 is correspondingly connected with the clamping seat 10, specifically, two arm ends of the bottom layer scissor unit of the scissor lifting assembly 2 are respectively used as a fixed end and a movable end, two sides of the clamping seat are respectively provided with a circular hinge hole and a strip-shaped sliding groove, the fixed ends of the two side scissor units are respectively hinged with the circular hinge hole of the clamping seat, the movable ends of the two sides are respectively connected with the sliding rod 7, and the movable ends of the two sides are respectively hinged with the sliding rod 7, and the sliding rod is embedded in the sliding grooves of the two side clamping seats, so that when the sliding rod 7 reciprocates in the sliding grooves, the scissor lifting assembly 2 realizes stretching and recycling. In this embodiment, the top of slider 5 is equipped with the connecting block, and the keyway has been seted up at the center of connecting block and is used for passing through spline fixed connection between with slide bar 7, and the symmetry central line of two spacing arms coincides with the symmetry central line of cassette 10 of moving base 1 both sides to make slider 5 be in the middle part of slide bar 7, avoid the slide bar atress that the slider 5 skew slide bar middle part led to uneven, lead to the problem that slide bar warp or cut fork lift assembly both sides lift speed is inconsistent. In addition, in order to ensure the limiting function of the limiting piece 6, the lengths of the two limiting arms need to cover all sliding rails, so that the sliding blocks 5 are prevented from being separated from the limiting arms and losing power. In other embodiments, the slider 5 is flat keyed to the slide bar 7.

In addition, in this example, a driving motor 8 is used as a power source of the rotating disc 4, referring to fig. 1, a rotating shaft of the driving motor 8 is perpendicular to the rotating disc 4, an internal gear is fixedly arranged in the center of the rotating disc 4, an external gear matched with the internal gear is fixed at the rotating shaft of the driving motor 8, and the driving motor is fixedly connected with the movable base 1 through a motor fixing frame. In this example, the motor fixing frame and the limiting piece are in an integrated structure, the driving motor is correspondingly connected with the motor fixing frame through a flange, so that the driving motor and the motor fixing frame are prevented from rotating relatively, after the driving motor 8 is started, the external gear fixed at the rotating shaft of the driving motor drives the internal gear in the center of the rotating disc 4 to rotate, and the rotating disc 4 is connected with the movable base 1 through a plane bearing, so that the rotating disc 4 rotates relative to the movable base 1 under the driving of the driving motor 8, and further, under the limiting effect of the limiting piece 6, the sliding block 5 correspondingly moves linearly along the limiting arm, thereby driving the sliding rod 7 to move in the sliding groove of the clamping seat 10, the movable end of the shearing fork unit is driven by the sliding rod 7 to approach or separate from the fixed end of the sliding rod 7, the shearing fork lifting assembly is lifted or dropped, and the stressed point is at the end of the shearing fork lifting assembly 4, so that the damage to the sliding rod and the hinging of the shearing fork unit caused by the driving of the existing hydraulic cylinder is avoided; when the rotating disc rotates at a constant speed, the sliding block moves at a constant speed, so that the operation platform can be lifted or lowered at a constant speed, and further the problems that when the existing hydraulic driving mechanism is initially driven, the horizontal component force is large, the vertical component force for lifting the operation platform is small, the vertical component force is continuously increased along with the continuous extension of the hydraulic mechanism, the lifting of the operation platform is non-uniform speed, and particularly the speed change movement with the continuous acceleration of the follow-up speed with the slow starting speed are solved. In addition, driving motor 8 sets up perpendicularly in the center department top of rolling disc 4 for driving motor's installation position is in the middle part of work platform 3 and mobile base 1, avoids driving motor to expose and mobile base both sides tip, influences the convenience of aerial work platform equipment.

Considering that in the process of indirectly driving the scissor lifting assembly 2 to lift by the sliding block 5, the main stress point is located at the sliding block side of the rotating disc 4, in order to ensure the stress balance of the rotating disc 4, the opposite side of the sliding block 5 is provided with a balance sliding block which also correspondingly slides along the sliding rail 40 and is fixedly connected with the movable base through the sliding block fixing frame, the opposite side of the limiting piece is provided with a sliding block fixing frame integrally connected with the limiting piece and the motor fixing frame, the whole sliding block fixing frame is arranged in a straight shape, and the balance sliding block is fixedly connected with the sliding block fixing frame, so that the limiting effect of the balance sliding block on the vertical direction through the sliding block fixing frame is avoided, the problem that the rotating disc 4 inclines towards the sliding block 5 side when the sliding block 5 is stressed and cannot keep level is solved, and the normal horizontal plane rotation of the rotating disc 4 is ensured.

While certain preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the utility model of the present application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.

Claims

1. The high-altitude operation platform comprises a movable base, a lifting driving device, a scissor lifting assembly, an operation platform and a sliding rod, wherein the scissor lifting assembly is arranged on the movable base and is formed by a plurality of scissor units; the driving motor is in transmission connection with the rotating disc.

2. The aerial work platform of claim 1, wherein the slider is provided with a recess for snapping onto the slide rail.

3. The aerial work platform of claim 1, wherein the slider is correspondingly clamped between adjacent tracks of the spiral linear slide.

4. The aerial work platform of claim 1, wherein the limiting member comprises two limiting arms parallel to the corresponding diameter direction of the rotating disc, and a fixing arm for fixing the limiting arm at the corresponding position of the movable base; the length of the limiting arm is matched with the starting position and the ending position of the sliding rail so as to cover the sliding rail.

5. The aerial work platform of claim 1, wherein the slide bar is connected to the slide block with corresponding splines or flat keys.

6. The aerial work platform of claim 1, wherein the drive motor is fixedly connected to the mobile base via a motor mount.

7. The aerial working platform according to claim 1, wherein the driving motor rotating shaft is perpendicular to the rotating disc, an internal gear is fixedly arranged in the center of the rotating disc, and an external gear matched with the internal gear is correspondingly fixed at the end part of the driving motor rotating shaft.

8. The aerial working platform of claim 1, wherein a balancing slider is provided on the opposite side of the slider on the rotating disc, the balancing slider sliding along the sliding rail, and the balancing slider is fixedly connected with the moving base through a slider fixing frame.