CN218931613U - Transportation device - Google Patents

Abstract

The utility model belongs to the technical field of transportation equipment, and discloses a transportation device which comprises a chassis, a scissor arm assembly, a bearing table, a driving piece, a pedal and a handle, wherein the scissor arm assembly stretches and can drive the bearing table to lift, the driving piece comprises a shell, a first oil cavity and a second oil cavity which are arranged in the shell, the shell is hinged with the chassis, a first piston rod and a second piston rod are respectively arranged in the first oil cavity and the second oil cylinder in a telescopic manner, a rodless cavity of the first oil cavity is communicated with a rodless cavity of the second oil cavity through a first oil way, the rodless cavity of the first oil cavity is communicated with a rodless cavity of the second oil cavity through a second oil way and a third oil way, a first one-way valve is arranged on the first oil way, a pressure relief valve is arranged on the third oil way, the second piston rod is hinged with the scissor arm assembly through an adapter, and a first elastic piece is arranged between the shell and the first piston rod. The conveying device provided by the utility model has a simple structure, is convenient to operate, and can be used for reliably conveying the frequency converter in a narrow space.

Description

Transportation device

Technical Field

The utility model relates to the technical field of transportation equipment, in particular to a transportation device.

Background

The frequency converter is needed to control a plurality of systems such as a dust removing system, an odor removing system, an air conditioning system, a positive and negative pressure system and the like of the existing power workshop. In the use process of the frequency converter, along with the increase of the service life of the frequency converter and the influence of the use environment, ageing or faults exist, and maintenance and replacement are needed. In the frequency converter maintenance and change process, need take out the frequency converter from the electric cabinet is inside and transport to appointed position and maintain or change, because the volume and the weight of frequency converter are great, and the electric cabinet space in power workshop is narrow and small, operational environment is limited, and handling tool on the market receives the restriction of its factors such as great, the structure is complicated, the operation is complicated, can't satisfy the operation requirement, and the manpower and materials are consumed in the manpower and materials that need many people's cooperation just can dismouting and transport, also influence maintenance efficiency.

Disclosure of Invention

The utility model aims to provide a conveying device which is simple in structure and convenient to operate, and can reliably convey a frequency converter in a narrow space.

To achieve the purpose, the utility model adopts the following technical scheme:

a transportation device, comprising:

a chassis;

the scissor arm assembly is telescopically arranged on the underframe;

the bearing table is arranged on the scissor arm assembly, and the scissor arm assembly stretches and contracts to drive the bearing table to lift;

the driving piece comprises a shell, a first oil cavity and a second oil cavity, wherein the first oil cavity and the second oil cavity are arranged in the shell, the shell is hinged with the underframe, the first oil cavity is provided with a first piston rod in a telescopic manner, the second oil cavity is provided with a second piston rod in a telescopic manner, a rodless cavity of the first oil cavity is communicated with a rodless cavity of the second oil cavity through a first oil path, the rodless cavity of the first oil cavity and the rodless cavity of the second oil cavity are respectively communicated with an oil tank through a second oil path and a third oil path, a first one-way valve capable of being conducted from the first oil cavity to the second oil cavity in a one-way manner is arranged on the first oil path, a pressure release valve is arranged on the third oil path, an adapter piece is fixedly arranged on the scissor arm assembly, the second piston rod is hinged with the adapter piece, and a first elastic piece is arranged between the shell and the first piston rod;

the pedal is hinged with the underframe, the first piston rod can be pushed to retract by downward rotation of the pedal, the second piston rod extends outwards and drives the adapter to rotate so as to extend the scissor arm assembly and drive the bearing table to ascend, and the first elastic piece is suitable for providing force for forcing the first piston rod to extend outwards;

the handle is hinged with the underframe, and the pressure release valve can be opened by downward rotation of the handle, so that the bearing table descends due to self gravity and drives the scissor arm assembly to shrink.

Optionally, the adaptor includes pivot and connecting portion, cut fork arm subassembly including two intervals set up in cut fork lifting arm of the relative both sides of chassis, cut fork lifting arm relative both ends connect respectively the chassis with the plummer, the pivot is fixed in two cut between the fork lifting arm, connecting portion protruding locate in the pivot, the second piston rod with connecting portion are articulated.

Optionally, the one end that cuts fork arm subassembly and keep away from the chassis is connected with the roof, the plummer is located on the roof just the plummer can slide stretch out and draw back in the roof.

Optionally, a sliding rail is arranged on the top plate, a sliding part is correspondingly arranged on the bearing table, and the sliding part is slidably connected with the sliding rail.

Optionally, the bottom of chassis is equipped with the articulated extension board, fixedly be provided with the articulated shaft on the articulated extension board, the casing with the articulated shaft articulates.

Optionally, a transmission rod is hinged on the hinge shaft, a first end of the transmission rod is fixedly connected with the pedal, a driving head is arranged at the end part of the first piston rod, a second end of the transmission rod is hinged with the driving head, and the hinge shaft is positioned between the pedal and the driving head; the pedal rotates downwards to drive the first end of the transmission rod to rotate downwards relative to the hinge shaft, and the second end of the transmission rod rotates upwards relative to the hinge shaft to drive the driving head to push the first piston rod to retract.

Optionally, a handle mounting plate is fixedly arranged on the underframe, the handle is hinged on the handle mounting plate, and the handle is connected with the pressure release valve through a driving wire; the handle rotates downwards to drive the driving wire to pull the pressure relief valve so as to open the pressure relief valve.

Optionally, a second elastic member is further provided between the pressure release valve and the housing, and the second elastic member is adapted to provide a force forcing the pressure release valve to close.

Optionally, the underframe is provided with a handrail along the vertical direction protrusion, and the handle mounting plate is fixedly arranged on the handrail.

Optionally, the bottom of the chassis is further provided with a plurality of casters, and the chassis can be moved by the casters.

The beneficial effects are that:

when the frequency converter is transported, the cabinet door of the electric cabinet is opened, the moving device is moved to one side of the cabinet door of the electric cabinet, then an operator steps down on the pedal, the pedal rotates downwards and applies force to the first piston rod to push the first piston rod to retract one end distance and compress the first elastic piece, the first piston rod pushes the oil in the rodless cavity of the first oil cavity to the rodless cavity of the second oil cavity through the first oil way and pushes the second piston rod to extend one end distance to drive the adapter piece to rotate, so that the scissor arm assembly extends and drives the bearing platform to rise a certain distance, then the pedal is released, the pushing force on the first piston rod is relieved, the first elastic piece drives the first piston rod to extend outwards under the action of elastic force, the oil in the oil tank can be supplemented to the rodless cavity of the first oil cavity through the second oil way in the process, the first one-way valve on the first oil way can avoid the oil backflow in the second oil cavity to ensure the height of the bearing platform, and the first piston rod extends outwards to push the pedal to rotate upwards to reset for the operator to step next time. When an operator continuously steps down on the pedal for many times to enable the bearing table to rise to the height which is flush with the bottom surface of the frequency converter, the frequency converter on the electric cabinet is detached and supported on the bearing table, then the operator grasps the handle to enable the handle to rotate downwards, so that the pressure release valve is opened, the second oil cavity is released, oil in the second oil cavity flows back to the oil tank through the third oil way, the scissor arm assembly is contracted by the self gravity of the bearing table, and the bearing table drives the supported frequency converter to descend together, so that the frequency converter can be moved and maintained later. The conveying device is simple in structure, lifting control of the bearing table can be achieved only through cooperation of hands and feet of operators, operation is convenient, and reliable conveying of the frequency converter in a narrow space can be facilitated.

Drawings

FIG. 1 is a schematic view of a transport device according to the present utility model from a perspective;

FIG. 2 is a schematic view of the construction of the driving member of the present utility model;

FIG. 3 is a schematic view of another view of the transport device of the present utility model;

FIG. 4 is a partial schematic view of the attachment of the driving member to the pedal of the present utility model.

In the figure:

100. a chassis; 110. hinging the support plate; 120. a hinge shaft; 130. a grip mounting plate; 140. an armrest; 150. universal castor;

200. a scissor arm assembly; 201. a scissor lift arm; 210. an adapter; 211. a rotating shaft; 212. a connection part;

300. a carrying platform; 310. a top plate; 321. a slide rail; 322. a sliding part;

400. a driving member; 410. a housing; 411. a first oil chamber; 412. a second oil chamber; 413. a first oil passage; 414. a second oil path; 415. a third oil passage; 416. a connecting rod; 420. a first piston rod; 421. a drive head; 430. a second piston rod; 440. an oil tank; 450. a first one-way valve; 460. a pressure release valve; 470. a second one-way valve; 480. a first elastic member;

510. a pedal; 511. a transmission rod;

520. a grip; 521. and driving the wire.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

The present embodiment provides a transporting device. Referring to fig. 1 to 4, the transporting device includes a chassis 100, a scissor arm assembly 200, a bearing table 300, a driving member 400, a pedal 510 and a handle 520, wherein the scissor arm assembly 200 is telescopically disposed on the chassis 100, the bearing table 300 is disposed on the scissor arm assembly 200, the scissor arm assembly 200 is telescopically capable of driving the bearing table 300 to lift, the driving member 400 includes a housing 410 and a first oil cavity 411 and a second oil cavity 412 disposed in the housing 410, the housing 410 is hinged with the chassis 100, the first oil cavity 411 is telescopically provided with a first piston rod 420, the second oil cavity 412 is telescopically provided with a second piston rod 430, a rodless cavity of the first oil cavity 411 is communicated with a rodless cavity of the second oil cavity 412 through a first oil channel 413, the rodless cavity of the first oil cavity 411 is communicated with a third oil channel 415 through a second oil channel 414, the first oil channel 413 is provided with a first one-way valve 450 capable of being conducted from the first oil cavity 411 to the second oil cavity 412, the third oil channel 415 is provided with a pressure release valve 460, the scissor arm assembly 200 is fixedly provided with a changeover member 210, the second oil cavity 210 is hinged with the chassis 100, the first oil cavity 411 is telescopically provided with a first piston rod 420, the second oil cavity 412 is telescopically provided with a second piston rod 430, the rodless cavity is telescopically communicated with a rodless cavity of the rodless cavity 412 and the rodless cavity 412 is communicated with the rodless cavity of the second oil cavity 412 through a first oil channel 412, the rodless cavity of the rodless cavity 412, the rodless cavity is provided with the rodless cavity 300, the rodless cavity is respectively, the rodless rod 300 is provided with the second oil channel is capable of the first oil channel 412, and the first oil channel 300, the first oil channel 300 is capable of driving the first piston rod and the second piston rod 300, and the second piston rod 300 is driven by the first piston rod and the second piston rod 200.

In this embodiment, when the frequency converter is transported, the cabinet door of the electric cabinet is opened, the moving device is moved to one side of the cabinet door, then the operator steps down on the pedal 510, so that the pedal 510 rotates downward and applies force to the first piston rod 420 to push the first piston rod 420 to retract one end distance and compress the first elastic member 480, so that the first piston rod 420 pushes the oil in the rodless cavity of the first oil cavity 411 to the rodless cavity of the second oil cavity 412 through the first oil way 413 and pushes the second piston rod 430 to extend one end distance to drive the adapter 210 to rotate, thereby extending the scissor arm assembly 200 and driving the carrying platform 300 to rise a certain distance, and then releases the pedal 510, so that the pedal 510 releases the pushing force on the first piston rod 420, the first elastic member 480 drives the first piston rod 420 under the elastic force, in-process oil in the oil tank 440 can be supplemented to the rodless cavity of the first oil cavity 411 through the second oil way 414, and the first one-way valve 450 on the first oil way 413 can avoid the oil back flow in the second oil cavity 412 to ensure the carrying platform 300 to keep high, and the first piston rod 420 is pushed to rotate to push the carrying platform 300 to rise a certain distance, and then the pedal 510 is stepped down reversely. When an operator continuously steps down on the pedal 510 for a plurality of times to enable the bearing table 300 to rise to the height which is level with the bottom surface of the frequency converter, the frequency converter on the electric cabinet is detached and supported on the bearing table 300, then the operator grasps the handle 520 to enable the handle 520 to rotate downwards, so that the pressure release valve 460 is opened, the second oil cavity 412 is released, the oil in the second oil cavity 412 flows back to the oil tank 440 through the third oil channel 415, the scissor arm assembly 200 is contracted due to the self gravity of the bearing table 300, and the bearing table 300 drives the supported frequency converter to descend together, so that the frequency converter can be moved, maintained and the like later. The conveying device is simple in structure, can realize lifting control of the bearing table 300 only through cooperation of hands and feet of operators, is convenient to operate, and can be used for reliably conveying the frequency converter in a narrow space.

Further, the second oil passage 414 is provided with a second one-way valve 470 which can be connected from the oil tank 440 to the first oil chamber 411 in a one-way manner, and when the first piston rod 420 is retracted into the first oil chamber 411 and extrudes the oil in the first oil chamber 411, the oil in the first oil chamber 411 is prevented from flowing back to the oil tank 440, so that the oil 440 can reliably and effectively enter the second oil chamber 412 through the first oil passage 413.

Further, a second elastic member (not shown) is provided between the relief valve 460 and the housing 410, the second elastic member being adapted to provide a force forcing the relief valve 460 to close. Specifically, when the grip releases the drive of the relief valve 460, the relief valve 460 can be automatically closed again by the elastic force of the second elastic member.

In this embodiment, the pressure release valve 460 is a prior art, and will not be described herein in detail.

In this embodiment, the first elastic member 480 and the second elastic member are preferably provided as springs.

In this embodiment, the driving member 400 may be a hydraulic jack, or may be a hydraulic cylinder, which is not limited herein.

In this embodiment, the length of the whole transporting device is 75cm or less, the width is 45cm or less, and the load-bearing capacity of the driving member is preferably 150kg or more.

In the present embodiment, referring to fig. 1 and 3, a plurality of casters 150 are further provided at the bottom of the chassis 100, and the chassis 100 can move by the casters 150. Preferably, the casters 150 are each provided with a locking mechanism, so that reliable self-locking of the casters 150 can be achieved.

The castor 150 and its self-locking structure are well known in the art and will not be described in detail herein.

In this embodiment, as shown in fig. 1 and 3, a top plate 310 is connected to an end of the scissor arm assembly 200 away from the chassis 100, and a carrying table 300 is disposed on the top plate 310 and the carrying table 300 can slide and stretch out and draw back on the top plate 310. Specifically, when the carrying platform 300 rises to a height level with the bottom surface of the frequency converter in the electric cabinet, the carrying platform 300 is controlled to slide outwards on the top plate 310, so that the carrying platform 300 can partially extend into the electric cabinet, and the frequency converter can be better supported and supported.

Specifically, the top plate 310 is provided with a sliding rail 321, the carrier 300 is correspondingly provided with a sliding portion 322, and the sliding portion 322 is slidably connected to the sliding rail 321. In the present embodiment, the sliding rail 321 extends along the length direction of the carrying platform 300. The sliding rail 321 and the sliding portion 322 are respectively provided with two groups, so that the reliability and stability of sliding between the bearing table 300 and the top plate 310 can be improved.

In the present embodiment, the sliding portion 322 may extend a distance greater than or equal to 50cm from the sliding rail 321.

In this embodiment, the chassis 100, the carrying platform 300, the top plate 310 and other structures are made of stainless steel, and have the characteristics of being sturdy, durable and corrosion-resistant.

In this embodiment, referring to fig. 3 specifically, the adaptor 210 includes a rotating shaft 211 and a connecting portion 212, the scissor arm assembly 200 includes two scissor lifting arms 201 disposed at opposite sides of the chassis 100 at intervals, opposite ends of the scissor lifting arms 201 are respectively connected to the chassis 100 and the carrying table 300, the rotating shaft 211 is fixed between the two scissor lifting arms 201, the connecting portion 212 is convexly disposed on the rotating shaft 211, and the second piston rod 430 is hinged to the connecting portion 212. Specifically, when the first piston rod 420 extends, the first piston rod 420 and the connecting portion 212 rotate relatively, so that the connecting portion 212 drives the rotating shaft 211 to rotate, and then the rotating shaft 211 drives the scissor lifting arms 201 fixed at both sides to extend upwards gradually.

The specific structure and the telescoping process of the scissor arm assembly 200 in this embodiment are all of the prior art, and are not described herein in detail.

Further, referring to fig. 4, a hinge support plate 110 is provided at the bottom end of the base frame 100, a hinge shaft 120 is fixedly provided on the hinge support plate 110, and a case 410 is hinged to the hinge shaft 120. Specifically, connecting rods 416 are fixedly arranged on two opposite sides of the casing 410, and the end portions of the connecting rods 416 are sleeved on the hinge shaft 120 and hinged with the hinge shaft 120.

Further, a transmission rod 511 is hinged on the hinge shaft 120, a first end of the transmission rod 511 is fixedly connected with the pedal 510, a driving head 421 is arranged at an end of the first piston rod 420, a second end of the transmission rod 511 is hinged with the driving head 421, and the hinge shaft 120 is located between the pedal 510 and the driving head 421. The pedal 510 rotates downwards to drive the first end of the transmission rod 511 to rotate downwards relative to the hinge shaft 120, and the second end of the transmission rod 511 rotates upwards relative to the hinge shaft 120 to drive the driving head 421 to push the first piston rod 420 to retract. Specifically, the pedal 510 is fixedly connected with the transmission rod 511 through a bolt assembly.

In this embodiment, referring specifically to fig. 1, a grip mounting plate 130 is fixedly disposed on the chassis 100, a grip 520 is hinged to the grip mounting plate 130, and the grip 520 is connected to a relief valve 460 via a driving wire 521. The driving wire 521 and the grip 520 are similar in structure to the handle bar and brake cable structure of a bicycle, and when an operator grips the grip 520 and rotates the grip 520 downward, the driving wire 521 can be driven to pull the relief valve 460, thereby enabling the relief valve 460 to be opened. When the operator releases the grip 520 by hand, the driving wire 521 releases the pulling of the relief valve 460, and the relief valve 460 can be automatically closed again by the second elastic member.

In the present embodiment, the grip 520 and the pedal 510 are disposed on the same side of the chassis 100, the grip 520 is disposed at the upper end of the chassis 100, and the pedal 510 is disposed at the bottom end of the chassis 100.

Further, the chassis 100 is provided with a handrail 140 protruding in a vertical direction, and the grip mounting plate 130 is fixedly disposed on the handrail 140. The operator can reliably push the transportation device with a reduced effort by grasping the armrest 140.

It should be noted that the transporting device provided by the utility model can transport the frequency converter, and can also lift and move other devices, so that the transporting device is not limited too much.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. A transportation device, comprising:

a chassis (100);

a scissor arm assembly (200) telescopically arranged on the underframe (100);

the bearing table (300) is arranged on the scissor arm assembly (200), and the scissor arm assembly (200) stretches and contracts to drive the bearing table (300) to lift;

the driving piece (400) comprises a shell (410) and a first oil cavity (411) and a second oil cavity (412) which are arranged in the shell (410), the shell (410) is hinged with the chassis (100), the first oil cavity (411) is provided with a first piston rod (420) in a telescopic mode, the second oil cavity (412) is provided with a second piston rod (430) in a telescopic mode, a rodless cavity of the first oil cavity (411) is communicated with a rodless cavity of the second oil cavity (412) through a first oil way (413), the rodless cavity of the first oil cavity (411) is communicated with a rodless cavity of the second oil cavity (412) through a second oil way (414) and a third oil way (415) respectively, a first one-way valve (450) which can be communicated from the first oil cavity (411) to the second oil cavity (412) in a one-way mode is arranged on the first oil way valve (413), a switching piece (210) is fixedly arranged on the scissor arm assembly (200), and the second oil cavity (412) is communicated with the first piston rod (420) through a second oil way (420);

a pedal (510) hinged to the chassis (100), wherein the pedal (510) rotates downwards to push the first piston rod (420) to retract, so that the second piston rod (430) extends outwards and drives the adapter (210) to rotate so as to extend the scissor arm assembly (200) and drive the bearing table (300) to ascend, and the first elastic piece (480) is suitable for providing a force for forcing the first piston rod (420) to extend outwards;

the handle (520) is hinged with the underframe (100), and the pressure release valve (460) can be opened by downward rotation of the handle (520), so that the bearing table (300) descends due to self gravity and drives the scissor arm assembly (200) to shrink.

2. The transporting device according to claim 1, wherein the adapter (210) includes a rotating shaft (211) and a connecting portion (212), the scissor arm assembly (200) includes two scissor lifting arms (201) disposed at two opposite sides of the chassis (100) at intervals, two opposite ends of the scissor lifting arms (201) are respectively connected with the chassis (100) and the carrying table (300), the rotating shaft (211) is fixed between the two scissor lifting arms (201), the connecting portion (212) is protruding on the rotating shaft (211), and the second piston rod (430) is hinged with the connecting portion (212).

3. The transport device according to claim 1, wherein a top plate (310) is connected to an end of the scissor arm assembly (200) away from the chassis (100), the carrying table (300) is disposed on the top plate (310) and the carrying table (300) is capable of sliding and stretching in the top plate (310).

4. A transporting device according to claim 3, wherein the top plate (310) is provided with a sliding rail (321), the bearing table (300) is correspondingly provided with a sliding part (322), and the sliding part (322) is slidably connected to the sliding rail (321).

5. The transport device according to claim 1, wherein a hinge support plate (110) is provided at a bottom end of the chassis (100), a hinge shaft (120) is fixedly provided on the hinge support plate (110), and the housing (410) is hinged to the hinge shaft (120).

6. The transportation device according to claim 5, characterized in that a transmission rod (511) is hinged on the hinge shaft (120), a first end of the transmission rod (511) is fixedly connected with the pedal (510), a driving head (421) is arranged at the end of the first piston rod (420), a second end of the transmission rod (511) is hinged with the driving head (421), and the hinge shaft (120) is located between the pedal (510) and the driving head (421); the pedal (510) rotates downwards to drive the first end of the transmission rod (511) to rotate downwards relative to the hinge shaft (120), and the second end of the transmission rod (511) rotates upwards relative to the hinge shaft (120) to drive the driving head (421) to push the first piston rod (420) to retract.

7. The transport device according to claim 1, characterized in that a grip mounting plate (130) is fixedly arranged on the underframe (100), the grip (520) is hinged on the grip mounting plate (130), and the grip (520) is connected with the pressure release valve (460) through a driving wire (521); rotation of the handle (520) downward can drive the drive wire (521) to pull the relief valve (460) so that the relief valve (460) is opened.

8. The transport device according to claim 7, characterized in that a second elastic member is further provided between the pressure relief valve (460) and the housing (410), said second elastic member being adapted to provide a force forcing the pressure relief valve (460) closed.

9. The transport apparatus as claimed in claim 8, wherein the chassis (100) is provided with a handrail (140) protruding in a vertical direction, and the grip mounting plate (130) is fixedly provided on the handrail (140).

10. The transport device according to any of claims 1-9, characterized in that the bottom of the chassis (100) is further provided with a plurality of casters (150), the chassis (100) being movable by the casters (150).

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