CN112141967A

CN112141967A - Lifting device and working vehicle

Info

Publication number: CN112141967A
Application number: CN202010927255.8A
Authority: CN
Inventors: 罗建利; 宗斌; 鲁建伟; 张明; 左后林; 周小科
Original assignee: China Railway Construction Heavy Industry Group Co Ltd
Current assignee: China Railway Construction Heavy Industry Group Co Ltd
Priority date: 2020-09-07
Filing date: 2020-09-07
Publication date: 2020-12-29

Abstract

The invention provides a lifting device and an operation vehicle. The lifting device comprises a fixed frame, a first sliding frame, a second sliding frame, a telescopic driving part and a lifting assembly. The first sliding frame is arranged at any end of the fixed frame and is connected with the fixed frame in a sliding mode. The second sliding frame is arranged at the other end of the fixed frame opposite to any end and is connected with the fixed frame in a sliding mode. The telescopic driving component is used for driving the first sliding frame and the second sliding frame to respectively slide along the fixed frame so as to extend or retract at least part of the first sliding frame and at least part of the second sliding frame relative to the fixed frame. According to the invention, the first sliding frame and the second sliding frame are arranged, so that the operation range of the lifting device is enlarged, the occupied space is reduced, and the flexibility of the lifting device is improved.

Description

Lifting device and working vehicle

Technical Field

The invention relates to the technical field of lifting, in particular to a lifting device and an operation vehicle.

Background

When working aloft, the lifting device is often required to carry people or equipment to reach a specified height so as to implement the operation. The flexibility of the lifting device in the related technology is poor, and the operation efficiency is influenced.

Disclosure of Invention

The present invention is directed to solving at least one of the above problems.

Therefore, the first object of the present invention is to provide a lifting device.

A second object of the present invention is to provide a work vehicle.

In order to achieve the first object of the present invention, the technical solution of the present invention provides a lifting device, including a fixed frame; the first sliding frame is arranged at any end of the fixed frame and is connected with the fixed frame in a sliding manner; the second sliding frame is arranged at the other end, opposite to any end, of the fixed frame and is connected with the fixed frame in a sliding mode; the telescopic driving component is used for driving the first sliding frame and the second sliding frame to respectively slide along the fixed frame so as to extend or retract at least part of the first sliding frame and at least part of the second sliding frame relative to the fixed frame; and the lifting assembly can extend downwards or contract upwards relative to the first sliding frame and the second sliding frame.

First sliding frame and second sliding frame and fixed frame sliding connection among this technical scheme to realize extending or contracting for fixed frame under telescopic drive component's drive effect, simple structure reduces elevating gear cost. When the first sliding frame and the second sliding frame are extended, a larger operation space can be provided for constructors, and the operation efficiency of the lifting device is improved. When the first sliding frame and the second sliding frame are contracted, the size of the lifting device is reduced, so that the lifting device can meet the use requirements of different operation spaces, and the flexibility of the lifting device is improved. The lifting assembly is arranged below the first sliding frame and the second sliding frame, and extends downwards or retracts upwards relative to the first sliding frame and the second sliding frame, so that the purpose of implementing operation by maintainers at different heights or positions can be realized, and the service performance of the lifting device is improved.

In addition, the technical solution provided by the above technical solution of the present invention may further have the following additional technical features:

in the above technical solution, the first sliding frame includes at least two first sliding connection parts arranged in parallel; the second sliding frame comprises at least two second sliding connecting parts which are arranged in parallel; the telescopic driving part comprises a first telescopic driving part and a second telescopic driving part, the first telescopic driving part is connected with any one of the first sliding connecting parts to drive the first sliding frame to slide, and the second telescopic driving part is connected with any one of the second sliding connecting parts to drive the second sliding frame to slide.

First sliding frame and second sliding frame among this technical scheme are respectively through at least two first sliding connection portion and the second sliding connection portion and the fixed frame sliding connection who sets up side by side to reduce the resistance of first sliding frame and second sliding frame when sliding for fixed frame, improve the speed of extension or shrink, and then improve elevating gear's operating efficiency. First flexible driver part and the flexible driver part of second drive first sliding frame and second sliding frame respectively, simple structure, the maintenance of being convenient for.

In any of the above technical solutions, at least one of the first telescopic driving part and the second telescopic driving part is an oil cylinder; and/or at least one of the first telescopic driving part and the second telescopic driving part is provided with a first displacement sensor; and/or at least one of the first telescopic driving component and the second telescopic driving component is provided with a first throttling control valve; and/or at least one of the first telescopic driving part and the second telescopic driving part is provided with a first limit switch.

Among this technical scheme at least one in first flexible drive disk assembly and the flexible drive disk assembly of second is the hydro-cylinder, simple structure, the maintenance of being convenient for to reduce elevating gear cost. And/or at least one of the first telescopic driving component and the second telescopic driving component is provided with a first displacement sensor and/or a first throttling control valve and/or a first limit switch so as to realize real-time detection and limit of the sliding displacement of the first sliding frame and the second sliding frame, so that the first sliding frame and the second sliding frame can extend or contract different displacements according to the working environment, the flexibility of the lifting device is improved, and the phenomenon that the first sliding frame and the second sliding frame are too large in extension displacement and cause falling relative to the fixed frame is avoided, thereby improving the safety performance of the lifting device.

In any of the above technical solutions, the lifting assembly includes a first lifting assembly, and the first lifting assembly is disposed at a lower position of the first sliding frame and can extend downward or contract upward relative to the first sliding frame; and the second lifting assembly is arranged at the lower part of the second sliding frame and can extend downwards or contract upwards relative to the second sliding frame.

Through first lifting unit and second lifting unit respectively for first sliding frame and second sliding frame exhibition receipts, improved first sliding frame and second sliding frame's load performance and stability among this technical scheme, and then make elevating gear can satisfy the user demand of construction operation, improve elevating gear's flexibility.

In any of the above technical solutions, the first lifting assembly includes a first scissors component and a first lifting driving component, and the first lifting driving component is disposed on the first scissors component to drive the first scissors component to unfold and fold; the second lifting assembly comprises a second scissor component and a second lifting driving component, and the second lifting driving component is arranged on the second scissor component to drive the second scissor component to unfold and fold.

First lifting unit and second lifting unit have the scissors fork structure among this technical scheme, through the drive of first lift drive part and second lift drive part, realize the extension or the shrink of first lifting unit and second lifting unit, simple structure reduces elevating gear cost.

In any of the above technical solutions, at least one of the first elevation driving part and the second elevation driving part is an oil cylinder; and/or at least one of the first lifting driving part and the second lifting driving part is provided with a second displacement sensor; and/or at least one of the first lifting driving component and the second lifting driving component is provided with a second throttling control valve; and/or at least one of the first lifting driving part and the second lifting driving part is provided with a second limit switch.

At least one of the first lifting driving part and the second lifting driving part in the technical scheme is an oil cylinder, so that the structure is simple, the maintenance is convenient, and the cost of the lifting device is reduced. And/or at least one of the first lifting driving component and the second lifting driving component is provided with a second displacement sensor and/or a second throttling control valve and/or a second limit switch, so that the telescopic displacement of the first lifting component and the second lifting component can be detected and limited in real time, the first lifting component and the second lifting component can extend or contract different displacements according to the operation environment, the flexibility of the lifting device is improved, meanwhile, the difference of the extending or contracting displacement of the first lifting component and the second lifting component is avoided, the lifting device is inclined, and the operation of constructors is influenced.

In any of the above technical solutions, the lifting device further includes a first roller shutter, the first roller shutter is connected with the operation platform of the lifting device, and is folded and unfolded along with the first scissor component; and/or a second roller shutter, which is connected with the operation platform of the lifting device and is unfolded and folded along with the second scissor component.

First roll up curtain and second and roll up the curtain and follow the extension or the shrink of first scissors fork part and second scissors fork part respectively and expand or withdraw among this technical scheme to play the guard action to the staff above the work platform, avoid first scissors fork part and second to cut the fork part and cause the damage to personnel or equipment when extension or shrink, thereby improve elevating gear's security performance. Meanwhile, when the first scissor component and the second scissor component do not move, the first roller shutter and the second roller shutter are retracted, so that the space is saved, and the size of the lifting device is reduced.

In any of the above technical solutions, the lifting device further includes a first bracket, the first bracket is connected with the fixed frame and used for supporting the first sliding frame; a second bracket connected with the fixed frame and supporting the second sliding frame; wherein, fixed frame is last to be equipped with first anticreep boss and second anticreep boss, and the at least part of first anticreep boss stretches into first bracket, and the at least part of second anticreep boss stretches into the second bracket.

First bracket and second bracket and fixed frame fixed connection in this technical scheme to play the effect of supporting first sliding frame and second sliding frame. At least part of first anticreep boss and second anticreep boss is extended into first bracket and second bracket respectively, leads to and further plays limiting displacement to first bracket and second bracket, avoids first bracket and second bracket to take place to drop for fixed frame, and then improves elevating gear's security performance.

In any of the above technical solutions, the lifting device further includes a telescopic guardrail, which is disposed on the operation platform of the lifting device and can extend or contract relative to the operation platform; the folding footboard is arranged on the telescopic guardrail and can be turned over around the telescopic guardrail. Among this technical scheme operating personnel can improve elevating gear's flexibility according to the height of the flexible guardrail of operation environment adjustment of difference. The folding footboard can be around flexible guardrail upset when using, and simple structure plays the effect that bears the weight of the operation personnel. Can be parallel to each other with flexible guardrail when need not the use, practice thrift the temporary space.

In order to achieve the second object of the present invention, the technical solution of the present invention provides a work vehicle, including a vehicle body; the lifting device according to any one of the above technical schemes is connected with a vehicle body.

The working vehicle in the technical scheme comprises the lifting device in any one of the technical schemes, so that all the beneficial effects of any one of the technical schemes are achieved, and the details are not repeated.

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 view of a first configuration of a lifting device according to some embodiments of the present invention;

FIG. 2 is a second schematic diagram of a lifting device according to some embodiments of the present invention;

FIG. 3 is a schematic view of a third embodiment of a lifting device according to the present invention;

FIG. 4 is a fourth schematic view of a lifting device according to some embodiments of the present invention;

FIG. 5 is a fifth schematic view of a lifting device according to some embodiments of the present invention;

FIG. 6 is a sixth schematic illustration of a lifting device according to some embodiments of the present invention;

FIG. 7 is a first structural schematic view of a telescoping guardrail of some embodiments of the present invention;

FIG. 8 is a second structural view of a telescoping guardrail of some embodiments of the present invention;

FIG. 9 is a schematic structural view of a first bracket according to some embodiments of the present invention;

FIG. 10 is a schematic structural view of a second bracket according to some embodiments of the present invention;

FIG. 11 is a schematic illustration of a work vehicle according to some embodiments of the present invention;

FIG. 12 is a block diagram representation of the structure of a telescoping drive unit according to some embodiments of the invention;

FIG. 13 is a schematic block diagram of a first configuration of a first telescoping drive unit in accordance with certain embodiments of the invention;

FIG. 14 is a schematic block diagram of a second configuration of a first telescoping drive unit in accordance with certain embodiments of the invention;

FIG. 15 is a schematic block diagram of a third configuration of a first telescoping drive unit in accordance with certain embodiments of the invention;

FIG. 16 is a schematic block diagram of a first configuration of a second telescoping drive unit in accordance with certain embodiments of the invention;

FIG. 17 is a schematic block diagram of a second configuration of a second telescoping drive unit according to some embodiments of the invention;

FIG. 18 is a schematic block diagram of a third configuration of a second telescoping drive unit in accordance with certain embodiments of the invention;

FIG. 19 is a schematic block diagram of a first configuration of a first lift drive component in accordance with certain embodiments of the invention;

FIG. 20 is a schematic block diagram of a second configuration of a first lift drive component in accordance with certain embodiments of the present invention;

FIG. 21 is a schematic block diagram of a third configuration of a first lift drive component in accordance with certain embodiments of the invention;

FIG. 22 is a schematic block diagram of a first configuration of a second lift drive component in accordance with certain embodiments of the present invention;

FIG. 23 is a schematic block diagram of a second configuration of a second lift drive component in accordance with certain embodiments of the present invention;

fig. 24 is a schematic block diagram of a third configuration of a second lift drive component in accordance with some embodiments of the invention.

Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 24 is:

100: lifting device, 110: fixed frame, 120: first slide frame, 122: first sliding connection portion, 130: second slide frame, 132: second slide connecting portion, 140: telescopic driving part, 142: first telescopic drive member, 144: second telescopic driving member, 146: first displacement sensor, 148: first throttle control valve, 150: lifting assembly, 152: first lift assembly, 154: second lift assembly, 156: first scissors member, 158: first elevation drive member, 160: second scissor assembly, 162: second elevation drive member, 164: first roller blind, 166: second roll screen, 168: first bracket, 170: second bracket, 172: first anti-drop boss, 174: second anticreep boss, 176: telescopic guardrail, 178: folding step, 180: second displacement sensor, 182: second throttle control valve, 184: second limit switch, 186: first limit switch, 188: first telescopic fence, 190: second telescopic fence, 192: telescopic fence drive part, 194: slideway, 200: work vehicle, 210: a vehicle body.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

The lifting device 100 and the work vehicle 200 according to some embodiments of the present invention will be described with reference to fig. 1 to 24.

Example 1

As shown in fig. 1 and 2, the present embodiment provides a lifting device 100. As shown in fig. 3 and 14, includes a fixed frame 110, a first slide frame 120, a second slide frame 130, a telescopic driving part 140, and a lifting assembly 150. The first sliding frame 120 is provided at either end of the fixed frame 110 and is slidably coupled with the fixed frame 110. The second sliding frame 130 is provided at the other end of the fixed frame 110 opposite to either end, and is slidably coupled with the fixed frame 110. The telescopic driving part 140 is used to drive the first sliding frame 120 and the second sliding frame 130 to respectively slide along the fixed frame 110, so that at least part of the first sliding frame 120 and at least part of the second sliding frame 130 extend or retract relative to the fixed frame 110. The lifting assembly 150 can be extended downward or retracted upward with respect to the first and second slide frames 120 and 130.

The telescopic driving part 140 in this embodiment drives the first and second sliding

frames

120 and 130 to extend or contract along the fixed frame 110. It is understood that the telescopic driving part 140 may be a cylinder telescopic driving part or a motor telescopic driving part, etc. The fixed frame 110, the first slide frame 120, and the second slide frame 130 have flat plate-like structures, may be made of a metal material, a composite material, or the like, and are used to carry people or equipment for work.

When the first and second sliding

frames

120 and 130 are extended with respect to the fixed frame 110, it is possible to provide a greater working range for a worker and improve the working efficiency of the lifting apparatus 100. When the first sliding frame 120 and the second sliding frame 130 are retracted relative to the fixed frame 110, the volume of the lifting device 100 is reduced, so that the lifting device 100 can meet the use requirements of different working spaces, and the flexibility of the lifting device 100 is improved.

In some embodiments of the present embodiment, the first sliding frame 120 may be disposed at the left side of the fixed frame 110, and the second sliding frame 130 may be disposed at the right side of the fixed frame 110. In other embodiments of this embodiment, the first sliding frame 120 may be disposed at the right side of the fixed frame 110, and the second sliding frame 130 may be disposed at the left side of the fixed frame 110.

The first sliding frame 120 and the second sliding frame 130 are slidably connected to the fixed frame 110, so as to extend or retract relative to the fixed frame 110 under the driving action of the telescopic driving part 140, and the lifting device 100 has a simple structure and reduces the cost.

The lifting assembly 150 is disposed under the first sliding frame 120 and the second sliding frame 130, and may be a scissor lifting structure or a motor lifting structure. Through the vertical ascending or descending of the lifting assembly 150 relative to the fixed frame 110, the first sliding frame 120 and the second sliding frame 130, the purpose that the lifting device 100 carries maintenance personnel to carry out operation at different heights is achieved, and the service performance of the lifting device 100 is improved.

Example 2

The present embodiment provides a lifting device 100, and in addition to the technical features of embodiment 1, the present embodiment further includes the following technical features.

The first slide frame 120 includes at least two first slide coupling portions 122 arranged side by side. The second slide frame 130 includes at least two second slide coupling portions 132 arranged side by side. As shown in fig. 12, the telescopic driving member 140 includes a first telescopic driving member 142 and a second telescopic driving member 144, the first telescopic driving member 142 is connected to any one of the first sliding connectors 122 to drive the first sliding frame 120 to slide, and the second telescopic driving member 144 is connected to any one of the second sliding connectors 132 to drive the second sliding frame 130 to slide.

In this embodiment, the first telescopic driving part 142 and the second telescopic driving part 144 respectively drive the first sliding frame 120 and the second sliding frame 130, so as to extend or retract the first sliding frame 120 and the second sliding frame 130, and the structure is simple and convenient for maintenance.

In some embodiments of the present embodiment, the first telescopic driving component 142 and the second telescopic driving component 144 may simultaneously drive the first sliding frame 120 and the second sliding frame 130 to extend or contract, so as to increase the operation range of the lifting device 100 or reduce the volume of the lifting device 100, thereby improving the usability of the lifting device 100.

In other embodiments of this embodiment, the first telescopic driving component 142 and the second telescopic driving component 144 can respectively drive the first sliding frame 120 and the second sliding frame 130 to extend or retract, so as to further improve the flexibility of the lifting device 100, and the lifting device 100 can meet the use requirements of different working environments.

The first and second sliding

frames

120 and 130 are slidably coupled to the fixed frame 110 by at least two first and second sliding

coupling portions

122 and 132, respectively, which are disposed in parallel. It is understood that the first sliding connection portion 122 and the second sliding connection portion 132 may be a slide rail or a rail slider, etc. to reduce the resistance when the first sliding frame 120 and the second sliding frame 130 slide relative to the fixed frame 110, and increase the speed of extension or contraction, thereby increasing the working efficiency of the lifting device 100.

Example 3

As shown in fig. 13, the present embodiment provides a lifting device 100, and in addition to the technical features of any one of the above embodiments, the present embodiment further includes the following technical features.

At least one of the first telescopic driving part 142 and the second telescopic driving part 144 is a cylinder. As shown in fig. 13 and 16, at least one of the first telescopic driving part 142 and the second telescopic driving part 144 is provided with a first displacement sensor 146. As shown in fig. 14 and 17, at least one of the first telescopic driving part 142 and the second telescopic driving part 144 is provided with a first throttle control valve 148. As shown in fig. 15 and 18, at least one of the first telescopic drive member 142 and the second telescopic drive member 144 is provided with a first limit switch 186.

In this embodiment, at least one of the first telescopic driving member 142 and the second telescopic driving member 144 is an oil cylinder, which is simple in structure, convenient for maintenance, and reduces the cost of the lifting device 100.

At least one of the first telescopic driving part 142 and the second telescopic driving part 144 is provided with a first displacement sensor 146 and/or a first throttle control valve 148 and/or a first limit switch 186 to realize real-time detection and limit of the sliding displacement of the first sliding frame 120 and the second sliding frame 130 relative to the fixed frame 110, so that the first sliding frame 120 and the second sliding frame 130 can extend or retract different displacements according to the working environment, and the flexibility of the lifting device 100 is improved. Meanwhile, the first sliding frame 120 and the second sliding frame 130 are prevented from being excessively extended and displaced, and thus from falling off relative to the fixed frame 110, thereby improving the safety performance of the lifting device 100.

It is understood that the first displacement sensor 146 may be a laser displacement sensor or an ultrasonic displacement sensor, etc., and functions to detect the sliding displacement of the first sliding frame 120 and the second sliding frame 130 in real time. The first limit switch 186 may be a piston-type limit switch or a rotary swing rod-type limit switch, and the first throttle control valve 148 may be an electric control valve or a pneumatic control valve, and the like, and has the function of limiting the first sliding frame 120 and the second sliding frame 130, and the structure is simple and convenient to maintain.

Example 4

As shown in fig. 4, the present embodiment provides a lifting device 100, and in addition to the technical features of any one of the above embodiments, the present embodiment further includes the following technical features.

The lift assembly 150 includes a first lift assembly 152 and a second lift assembly 154. The first lifting assembly 152 is disposed at a lower position of the first sliding frame 120 and can be extended downward or retracted upward relative to the first sliding frame 120. The second lifting assembly 154 is disposed at a lower position of the second sliding frame 130 and can be extended downward or retracted upward relative to the second sliding frame 130.

In this embodiment, the first lifting assembly 152 and the second lifting assembly 154 are respectively extended downwards or retracted upwards relative to the first sliding frame 120 and the second sliding frame 130, so as to achieve the purpose that the lifting device 100 can work at different heights. It can be understood that the first lifting assembly 152 and the second lifting assembly 154 can be lifted or lowered at the same height at the same time, so as to avoid the inclination of the lifting device 100 caused by the difference in height between the first lifting assembly 152 and the second lifting assembly 154, which affects the operation of the constructor.

The first lifting assembly 152 and the second lifting assembly 154 respectively drive the first sliding frame 120 and the second sliding frame 130 to ascend or descend, so that the load-carrying performance and stability of the first sliding frame 120 and the second sliding frame 130 are improved, the lifting device 100 can meet the use requirement of construction operation, and the flexibility of the lifting device 100 is improved.

Example 5

The first lifting assembly 152 includes a first scissors assembly 156 and a first lifting driving assembly 158, and the first lifting driving assembly 158 is disposed on the first scissors assembly 156 to drive the first scissors assembly 156 to extend and retract. The second lifting assembly 154 includes a second scissors member 160 and a second lifting driving member 162, and the second lifting driving member 162 is disposed on the second scissors member 160 to drive the second scissors member 160 to open and close.

In this embodiment, the first lifting assembly 152 and the second lifting assembly 154 have a scissor structure, specifically, the first scissor component 156 and the second scissor component 160 are formed by connecting a plurality of sets of metal levers which are mutually crossed, and the change of the angle between the plurality of metal levers is realized by the driving of the first lifting driving component 158 and the second lifting driving component 162, so that the extension or the contraction of the first lifting assembly 152 and the second lifting assembly 154 is realized, the structure is simple, and the cost of the lifting device 100 is reduced.

It is understood that the first and second

elevation driving parts

158 and 162 may be a cylinder driving structure or a motor driving structure, etc. Simple structure and easy maintenance.

The first scissor component 156 and the second scissor component 160 are provided with the slideways 194, and the scissor components slide in the slideways 194 to realize extension or contraction, so that the structure is simple, the faults of jamming and the like of the first scissor component 156 and the second scissor component 160 are avoided, and the service performance of the lifting device 100 is improved.

Example 6

The present embodiment provides a lifting device 100, and in addition to the technical features of any of the above embodiments, the present embodiment further includes the following technical features.

At least one of the first elevation driving part 158 and the second elevation driving part 162 is a cylinder. As shown in fig. 19 and 22, at least one of the first elevation driving part 158 and the second elevation driving part 162 is provided with a second displacement sensor 180. As shown in fig. 20 and 23, at least one of the first elevation driving part 158 and the second elevation driving part 162 is provided with a second throttle control valve 182. As shown in fig. 21 and 24, at least one of the first elevation driving part 158 and the second elevation driving part 162 is provided with a second limit switch 184.

In this embodiment, at least one of the first elevation driving member 158 and the second elevation driving member 162 is an oil cylinder, which is simple in structure, convenient for maintenance, and reduces the cost of the elevation apparatus 100.

At least one of the first elevation driving part 158 and the second elevation driving part 162 is provided with a second displacement sensor 180 and/or a second throttle control valve 182 and/or a second limit switch 184 to realize real-time detection and limit of the extension and retraction displacement of the first elevation assembly 152 and the second elevation assembly 154, so that the first elevation assembly 152 and the second elevation assembly 154 can extend or retract different displacements according to the working environment, and the flexibility of the elevating device 100 is improved. Meanwhile, the first lifting assembly 152 and the second lifting assembly 154 are prevented from being displaced differently in extension or contraction, so that the lifting device 100 is prevented from being inclined, and the operation of a constructor is prevented from being influenced.

It is understood that the second displacement sensor 180 may be a laser displacement sensor or an ultrasonic displacement sensor, etc. to achieve real-time detection of the telescopic displacement of the first and

second lifting assemblies

152 and 154. The second limit switch 184 may be a piston-type limit switch or a rotary swing rod-type limit switch, and the second throttle control valve 182 may be an electric control valve or a pneumatic control valve, and the like, and plays a role in limiting the first lifting assembly 152 and the second lifting assembly 154, and the structure is simple and the maintenance is convenient.

Example 7

The lifting device 100 further includes: a first roller shade 164 and a second roller shade 166. The first roller shade 164 is interconnected to the work platform of the lift 100 and follows the extension and retraction of the first scissor assembly 156. And a second roll screen 166, the second roll screen 166 being interconnected with the work platform of the lifting device 100 and being extended and retracted following the second scissor assembly 160.

In the present embodiment, the first roller shade 164 and the second roller shade 166 are respectively extended or retracted along with the extension or retraction of the first scissor member 156 and the second scissor member 160, so as to protect the operator near the first scissor member 156 and the second scissor member 160, and prevent the first scissor member 156 and the second scissor member 160 from damaging the operator or the equipment during the extension or retraction, thereby improving the safety performance of the lifting device 100. Meanwhile, when the first scissor component 156 and the second scissor component 160 do not move, the first roller shade 164 and the second roller shade 166 are retracted, and occupied space is saved.

In some embodiments of the present embodiment, the first roller shade 164 and the second roller shade 166 may be metal roller shades having roller structures, and the rollers are mounted on the first sliding frame 120 and the second sliding frame 130, so as to increase the extending or retracting speed of the first roller shade 164 and the second roller shade 166, and thus improve the usability of the lifting device 100.

In other embodiments of this embodiment, the first roller shade 164 and the second roller shade 166 may be protective curtains with a folding structure, which is simple in structure and reduces the cost of the lifting device 100.

Example 8

As shown in fig. 9 and 10, the present embodiment provides a lifting device 100, and in addition to the technical features of any one of the above embodiments, the present embodiment further includes the following technical features.

The lift 100 also includes a first bracket 168 and a second bracket 170. The first bracket 168 is connected to the fixed frame 110 and serves to support the first sliding frame 120. The second bracket 170 is connected to the fixed frame 110 and serves to support the second sliding frame 130. The fixing frame 110 is provided with a first anti-falling boss 172 and a second anti-falling boss 174, at least a part of the first anti-falling boss 172 extends into the first bracket 168, and at least a part of the second anti-falling boss 174 extends into the second bracket 170.

The first bracket 168 and the second bracket 170 are fixedly coupled to the fixed frame 110 in this embodiment to function as a support for the first slide frame 120 and the second slide frame 130. Specifically, the first bracket 168 and the second bracket 170 are metal L-shaped structures, and function to support the first slide frame 120 and the second slide frame 130. The first bracket 168 and the second bracket 170 may be connected to the fixed frame 110 by bolts or welding, so that the structure is simple and the cost of the lifting device 100 is reduced.

At least parts of the first anti-falling bosses 172 and the second anti-falling bosses 174 are respectively inserted into the first bracket 168 and the second bracket 170, and the first bracket 168 and the second bracket 170 are further limited by the first anti-falling bosses 172 and the second anti-falling bosses 174, so that the first bracket 168 and the second bracket 170 are prevented from falling relative to the fixed frame 110, and the safety performance of the lifting device 100 is further improved.

In some embodiments of the present embodiment, the first anti-slip boss 172 and the second anti-slip boss 174 may be a square or triangular protrusion structure, and are integrally formed with the fixing frame 110, so as to further perform a fixing and limiting function on the first bracket 168 and the second bracket 170.

Example 9

As shown in fig. 7 and 8, the present embodiment provides a lifting device 100, and in addition to the technical features of any one of the above embodiments, the present embodiment further includes the following technical features.

As shown in fig. 5 and 6, the lifting device 100 further includes a telescopic fence 176 and a folding step 178. The telescopic fence 176 is provided on the work platform of the lifting device 100 and can be extended or retracted relative to the work platform. The folding step 178 is provided on the telescopic fence 176 and can be turned over around the telescopic fence 176. The telescoping fence 176 in this embodiment can be divided into a first telescoping fence 188 and a second telescoping fence 190. Specifically, the second telescopic guardrail 190 is disposed above the first telescopic guardrail 188, and can be extended or retracted relative to the first telescopic guardrail 188 under the driving of the telescopic guardrail driving part 192, so that the constructor can flexibly adjust the overall height of the telescopic guardrail 176 according to different operation environments, and further the lifting device 100 can meet the use requirements of different operation environments, the use performance of the lifting device 100 is improved, and especially the safety degree of the operator during working on the operation platform is improved. It will be appreciated that the telescoping fence drive member 192 can be a pneumatic cylinder drive or a motor drive or the like.

The folding step 178 is disposed above the second telescoping fence 190 and may be parallel or perpendicular relative to the second telescoping fence 190. Specifically, the folding pedal 178 can be connected with the second telescopic guardrail 190 through a pin structure, and when the folding pedal 178 is used, the second telescopic guardrail 190 is turned over relatively, and the folding pedal 178 and the second telescopic guardrail 190 abut against each other to be compacted so as to realize the treading effect of the support operator. When the foldable pedal 178 is not used, it is disposed parallel to the retractable guard 176 to reduce the occupied space and improve the usability of the lifting device 100.

Example 10

As shown in fig. 11, the present embodiment provides a work vehicle 200, which includes a vehicle body 210 and the lifting device 100 as in any of the above embodiments, and the lifting device 100 is connected to the vehicle body 210.

Example 11

The medium-low speed magnetic levitation is used as a novel green and environment-friendly traffic mode and has the advantages of low noise, low cost, strong adaptability, small occupied area and the like. The magnetic levitation track is the foundation of magnetic levitation operation, and in order to ensure the safe operation of the train, the magnetic levitation track and the power supply system on the magnetic levitation track need to be regularly checked and maintained. In the related technology, the maintenance method of the magnetic suspension track has the advantages of high operation difficulty, high danger, poor flexibility of the maintenance device and reduction of the maintenance efficiency. As shown in fig. 11, in order to solve the above problem, the present embodiment provides a work vehicle 200 for comprehensive maintenance of a magnetic levitation track, which includes a lifting device 100 and a vehicle body 210, wherein the lifting device 100 is connected to the vehicle body 210.

As shown in fig. 9 and 10, the lifting device 100 of the present embodiment includes a fixed frame 110, the fixed frame 110 is a mounting fixing member of the whole lifting device 100, and the fixed frame 110 is provided with a fixing hole connected to the vehicle body 210. Two first brackets 168 and two second brackets 170 are provided on the fixing frame 110, and are fastened to the fixing frame 110 by means of bolts, etc., and a first anti-falling boss 172 and a second anti-falling boss 174 are provided on the fixing frame 110, which play a role of preventing the first brackets 168 and the second brackets 170 from falling off, so as to improve the safety performance of the lifting device 100.

The first bracket 168 and the second bracket 170 are offset relative to the mounting holes of the fixed frame 110, so as to prevent the first bracket 168 and the second bracket 170 from affecting the fixed connection of the fixed frame 110 with the vehicle body.

The first bracket 168 and the second bracket 170 on the two transverse fixed frames 110 are mutually meshed, and two sets of the first sliding connection parts 122 and the second sliding connection parts 132 are arranged on the first bracket 168 and the second bracket 170 and are matched with the two sets of the first sliding connection parts 122 and the second sliding connection parts 132 on the first sliding frame 120 and the second sliding frame 130 to realize the sliding of the first sliding frame 120 and the second sliding frame 130 relative to the fixed frames 110.

The first and second sliding

coupling parts

122 and 132 are disposed in parallel to prevent the first and second sliding

frames

120 and 130 from rotating in a horizontal plane. The lengths of the first and second sliding

frames

120 and 130 in the sliding direction are greater than the length of the fixed frame 110, ensuring a wide range of extension movement of the first and second sliding

frames

120 and 130 to improve the working range of the lifting device 100.

As shown in fig. 4, the first lifting assembly 152 and the second lifting assembly 154 are installed simultaneously, and the first sliding frame 120 and the second sliding frame 130 are arranged to be engaged with each other. And a telescopic driving part 140 is arranged beside the slide rails on one sides of the first sliding frame 120 and the second sliding frame 130, so that the first sliding frame 120 and the second sliding frame 130 are driven to transversely move. One end of the telescopic driving part 140 is mounted on the fixed frame 110, and the other end is mounted on the first sliding frame 120 or the second sliding frame 130, so as to realize a driving action for the first sliding frame 120 and the second sliding frame 130.

First and

second scissors assemblies

156 and 160 are disposed below the first and second slide frames 120 and 130. The first scissors assembly 156 and the second scissors assembly 160 have a working space inside for a worker, and a first lifting driving assembly 158 and a second lifting driving assembly 162 are mounted outside the first scissors assembly 156 and the second scissors assembly 160 to drive the first scissors assembly 156 and the second scissors assembly 160 to move up and down. The first lifting driving component 158 and the second lifting driving component 162 are internally provided with a second displacement sensor 180 and controlled by a second throttling control valve 182, the first lifting driving component 158 and the second lifting driving component 162 form closed-loop control by the second displacement sensor 180 and the second throttling control valve 182, the synchronism of the first lifting driving component 158 and the second lifting driving component 162 at two sides of the first scissor component 156 and the second scissor component 160 is ensured, and the horizontal lifting of the platform is maintained.

Below the first 156 and second 160 scissor members is mounted a work platform (not shown) provided with a folding step 178, a first 164, a second 166 and a telescopic fence 176. The folding pedals 178 have two states, horizontal and vertical, the horizontal state provides personnel to get on and off the platform, and the vertical state does not hinder personnel's work. The first 164 and second 166 roller shades are mounted on the platform such that when the platform is lowered, the first 164 and second 166 roller shades are deployed to protect personnel from inadvertently creating a pinch hazard when the first 156 and second 160 scissor members are retracted.

The telescopic guardrail 176 is installed on the working platform, and the telescopic guardrail 176 is set to be a lifting structure because the lifting platform does not meet the height requirement of the guardrail in the withdrawing state, so that the guardrail is unfolded when workers fall onto the platform, and the protection position is increased. After the work is finished, the guardrail is contracted and transversely retracted, and the occupied space is reduced.

Specifically, the lifting device 100 is mounted on the work vehicle 200, and safely transports the worker to a position below the magnetic levitation track side, and maintains the power supply track and other components. The lifting device 100 is in the form of a descending type working vehicle. The first sliding frame 120 and the second sliding frame 130 are installed on the bottom of the vehicle body 210 in the width direction, and the retracted state of the first sliding frame 120 and the second sliding frame 130 is the same as the width of the vehicle body 210 and is larger than the width of the magnetic levitation track when the first sliding frame 120 and the second sliding frame 130 extend outwards.

In some embodiments of this embodiment, the first sliding frame 120 and the second sliding frame 130 are driven by longitudinal cylinders during longitudinal movement, and the second displacement sensor 180 is disposed in the cylinders to feed back the positions of the cylinders in real time, so as to ensure synchronization of the cylinders on both sides, and realize stable lifting of the first sliding frame 120 and the second sliding frame 130. An interlocking mechanism is arranged on the transverse movement and longitudinal movement control of the first sliding frame 120 and the second sliding frame 130, when the first sliding frame 120 and the second sliding frame 130 are unfolded, the first sliding frame is transversely moved out through a transverse moving slide rail, then the first lifting assembly 152 and the second lifting assembly 154 are longitudinally lowered, and before the transverse movement is finished, the longitudinal lowering cannot be controlled. When the first sliding frame 120 and the second sliding frame 130 are retracted, they are first lifted vertically and then moved horizontally, and before the lifting operation in the vertical direction is completed, the horizontal movement operation cannot be performed.

Specifically, when the platform is deployed, the work vehicle 200 travels to the work position to be stopped and braked; the first and second slide frames 120 and 130 are unfolded and the worker ties the seat belt and steps on the folding step 178 to fall onto the work platform. The worker latches the first limit switch 186 and turns the folding step 178 to the upright position. The control platform is lowered to the operating position, raising and extending the telescoping fence 176 and beginning operation. When the lifting platform is retracted, the worker retracts and folds the telescopic guardrail 176, and controls the platform to longitudinally ascend to a retracting position; the folding pedal 178 is turned to be horizontal, and the first limit switch 186 is turned on; the worker steps on the folding pedal 178 to return to the inside of the vehicle, the safety belt is released, and the lifting platform is controlled to transversely retract.

In summary, the embodiment of the invention has the following beneficial effects:

1. the first sliding frame 120 and the second sliding frame 130 realize the transverse displacement of the lifting device 100, thereby enlarging the working range of the lifting device 100 and improving the working efficiency.

2. The safety performance of the lifting device 100 is improved.

3. The applicability of the working vehicle 200 is improved, and the working vehicle can meet the use requirements of different working environments.

In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," 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 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.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A lifting device, comprising:

a fixed frame;

the first sliding frame is arranged at any end of the fixed frame and is connected with the fixed frame in a sliding mode;

the second sliding frame is arranged at the other end, opposite to the any end, of the fixed frame and is connected with the fixed frame in a sliding mode;

a telescopic driving part for driving the first sliding frame and the second sliding frame to respectively slide along the fixed frame so as to extend or retract at least part of the first sliding frame and at least part of the second sliding frame relative to the fixed frame;

a lifting assembly that is extendable downward or retractable upward relative to the first and second slide frames.

2. Lifting device according to claim 1,

the first sliding frame comprises at least two first sliding connecting parts which are arranged in parallel;

the second sliding frame comprises at least two second sliding connecting parts which are arranged in parallel;

the telescopic driving component comprises a first telescopic driving component and a second telescopic driving component, the first telescopic driving component is connected with any one of the first sliding connection portions to drive the first sliding frame to slide, and the second telescopic driving component is connected with any one of the second sliding connection portions to drive the second sliding frame to slide.

3. Lifting device according to claim 2,

at least one of the first telescopic driving part and the second telescopic driving part is an oil cylinder; and/or

At least one of the first telescopic driving part and the second telescopic driving part is provided with a first displacement sensor; and/or

At least one of the first telescopic driving part and the second telescopic driving part is provided with a first throttling control valve; and/or

At least one of the first telescopic driving part and the second telescopic driving part is provided with a first limit switch.

4. The lift device of any one of claims 1 to 3, wherein the lift assembly comprises:

the first lifting assembly is arranged at the lower part of the first sliding frame and can extend downwards or contract upwards relative to the first sliding frame;

and the second lifting assembly is arranged at the lower part of the second sliding frame and can extend downwards or contract upwards relative to the second sliding frame.

5. Lifting device according to claim 4,

the first lifting assembly comprises a first scissor component and a first lifting driving component, and the first lifting driving component is arranged on the first scissor component so as to drive the first scissor component to unfold and fold;

the second lifting assembly comprises a second scissor component and a second lifting driving component, and the second lifting driving component is arranged on the second scissor component to drive the second scissor component to unfold and fold.

6. Lifting device according to claim 5,

at least one of the first lifting driving part and the second lifting driving part is an oil cylinder; and/or

At least one of the first lifting driving part and the second lifting driving part is provided with a second displacement sensor; and/or

At least one of the first lifting driving part and the second lifting driving part is provided with a second throttling control valve; and/or

At least one of the first lifting driving part and the second lifting driving part is provided with a second limit switch.

7. The lifting device of claim 5, further comprising:

the first roller shutter is connected with the operation platform of the lifting device and stretches and retracts along with the first scissor component; and/or

And the second roller shutter is connected with the operation platform of the lifting device and stretches and retracts along with the second scissor component.

8. The lifting device according to any one of claims 1 to 3, further comprising:

a first bracket connected with the fixed frame and supporting the first sliding frame;

a second bracket connected with the fixed frame and supporting the second sliding frame;

the fixing frame is provided with a first anti-falling boss and a second anti-falling boss, at least part of the first anti-falling boss extends into the first bracket, and at least part of the second anti-falling boss extends into the second bracket.

9. The lifting device according to any one of claims 1 to 3, further comprising:

the telescopic guardrail is arranged on the working platform of the lifting device and can extend or contract relative to the working platform;

the foldable pedal is arranged on the telescopic guardrail and can turn over around the telescopic guardrail.

10. A work vehicle, comprising:

a vehicle body;

the lifting device according to any one of claims 1 to 9, being connected to the vehicle body.