CN217867935U - Transport vehicle - Google Patents

Abstract

The utility model provides a carrier. The carrier comprises a movable base, a lifting assembly and a pushing assembly; the first end of the lifting assembly is connected with the movable base, the second end of the lifting assembly is connected with the pushing assembly, and the lifting assembly can lift relative to the movable base along the vertical direction and drives the pushing assembly to lift along the vertical direction; the pushing assembly is used for bearing an article, and the pushing assembly can drive the article to move to the side of the lifting assembly along the horizontal direction. The utility model provides a carrier uses manpower sparingly, improves quick-witted case installation effectiveness.

Description

Transport vehicle

Technical Field

The utility model relates to a quick-witted case installation technique especially relates to a carrier.

Background

In recent years, the great commercialization of technologies such as 5G, AI and cloud computing requires many data centers to provide services for the data centers, and various hardware devices need to be transported to a machine room and then installed in a cabinet in the construction process of the data centers.

Among the prior art, hardware equipment transport needs artifical the completion with the installation, perhaps borrows lift platform car, rises hardware equipment to the corresponding height of quick-witted case, then the manual work places hardware equipment on the support that corresponds in quick-witted case.

However, hardware equipment is heavy in weight, installation is completed by manpower, workload is large, and time and labor are consumed.

SUMMERY OF THE UTILITY MODEL

The utility model provides a carrier to among the solution prior art, the technical problem of machine case installation power consumption consuming time uses manpower sparingly, improves quick-witted case installation effectiveness.

The utility model provides a carrier, which comprises a movable base, a lifting component and a pushing component;

the first end of the lifting component is connected with the movable base, the second end of the lifting component is connected with the pushing component, and the lifting component can lift in the vertical direction relative to the movable base and drives the pushing component to lift in the vertical direction;

the pushing assembly is used for bearing an article, and the pushing assembly can drive the article to move to the side of the lifting assembly along the horizontal direction.

In a possible implementation manner, the utility model provides a carrier, push assembly include first driving piece and push plate, and push plate and lifting unit's second end is connected, and first driving piece is connected with push plate to the second end that promotes push plate relative lifting unit moves along the horizontal direction.

In a possible implementation manner, in the transportation vehicle provided by the present invention, the pushing plate is connected with the second end of the lifting assembly in a sliding manner or in a rolling manner;

the upper surface of the pushing plate is provided with a rolling piece, and the axis of the rolling piece is vertical to the moving direction of the pushing plate.

In a possible implementation manner, the utility model provides a carrier, first driving piece are the pneumatic cylinder, and the piston rod of pneumatic cylinder sets up along the horizontal direction, and the cylinder body of pneumatic cylinder is held with lifting unit's second and is connected, and the piston rod passes through the connecting piece with push plate's lower surface and is connected.

In a possible implementation manner, the number of the first driving members of the transporting vehicle provided by the utility model is two, and the two first driving members are respectively connected to two opposite sides of the second end of the lifting assembly;

or the first driving piece is connected below the second end of the lifting assembly, and the second end of the lifting assembly is provided with an avoiding groove for avoiding the connecting piece.

In a possible implementation manner, the lifting assembly of the transporting vehicle provided by the utility model comprises a second driving member, a lifting bracket and a top plate;

the bottom of the lifting support is in rolling connection or hinged connection with the movable base;

the second driving piece is connected with the lifting support to drive the lifting support to lift;

the top of the lifting support is in rolling connection or hinged connection with the top plate, and the pushing plate is located above the top plate and is in sliding connection with the top plate.

In a possible implementation manner, the utility model provides a carrier, lifting support are for cutting the formula support, and the second driving piece is the pneumatic cylinder, and the formula support is cut in the drive to the second driving piece and folds or expand.

In a possible implementation manner, the utility model provides a carrier, the upper surface of roof is provided with the spout, and the spout extends along push plate's moving direction, and push plate's lower surface have with spout assorted grafting portion, grafting portion insert locate the spout in, and slide along the extending direction of spout.

In a possible implementation manner, the utility model provides a carrier still includes at least one power component, and power component includes motor and hydraulic pump, and the motor is connected with the hydraulic pump electricity, and the hydraulic pump is used for supplying hydraulic oil for first driving piece or the second driving piece with hydraulic pump connection.

In a possible implementation manner, the moving base of the carrier provided by the utility model comprises a base body and a wheel assembly connected below the base body, wherein the wheel assembly comprises a power wheel set and a steering wheel set;

the base body is provided with a foldable and unfoldable handrail.

The utility model provides a pair of carrier removes base, lifting unit and propelling movement subassembly through the setting, and after the propelling movement subassembly bore article, thereby lifting unit drove propelling movement subassembly along vertical direction for removing the base and goes up and down along vertical direction, makes article reach the target height after, and the propelling movement subassembly promotes and drives article and remove to lifting unit's side along the horizontal direction to realize placing of article, like this, can practice thrift the manpower, improve work efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a transport cart according to an embodiment of the present invention;

fig. 2 is a working state diagram of a pushing assembly in the transporting vehicle according to the embodiment of the present invention;

fig. 3 is a schematic structural diagram of a pushing assembly of a cart according to an embodiment of the present invention;

fig. 4 is another schematic structural diagram of a pushing assembly in a truck according to an embodiment of the present invention.

Description of reference numerals:

1-a truck;

11-a mobile base;

111-a base body;

1111-armrest;

112-a wheel assembly;

1121-power wheel set;

1122-a steering wheel group;

12-a lifting assembly;

121-a second drive member;

122-a lifting bracket;

1221-inner support;

1222-external support;

123-a top plate;

1231-avoidance slot;

124-connecting rod;

13-a pushing assembly;

131-a first drive member;

132-a push plate;

1321-a roller;

133-a connector;

14-a power assembly;

141-a motor;

142-hydraulic pump.

Detailed Description

During the construction of a data center, various hardware devices need to be transported to a machine room and then installed in a cabinet. The height of the case is about 2.2 meters, the width is 0.6 meters, a plurality of layers of supports with different heights are arranged on two side walls of the case, and the distance between the two supports is matched with the width of hardware equipment on the same height. In the prior art, the hardware equipment is carried and installed manually, or a lifting platform truck is used for lifting the hardware equipment to the corresponding height of the case, and then the hardware equipment is carried manually and placed on the corresponding support in the case. Because hardware equipment is heavier and the machine case is higher, this kind of mode is wasted time and energy, and is inefficient.

In order to solve the technical problem, the utility model provides a carrier removes base, lifting unit and propelling movement subassembly through the setting, and when lifting unit dropped to the extreme low position, the carrier can be used to carry hardware equipment, transports it computer lab. The hardware equipment is lifted to the corresponding height of the case by utilizing the lifting component, and the hardware equipment is pushed into the case by the pushing component, so that the hardware equipment is supported by the support in the case, and the hardware equipment is placed.

In the description of the present invention, it is to be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, an indirect connection via an intermediary, a connection between two elements, or an interaction between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

The terms "first," "second," and "third" (if any) in the description and claims of this invention and the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein.

Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or maintenance tool that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or maintenance tool.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Fig. 1 is the structure schematic diagram of the carrier that the embodiment of the utility model provides, fig. 2 is the utility model discloses the operating condition of propelling movement subassembly in the carrier that the embodiment provided is shown with fig. 1, it is shown with fig. 2 to refer to, the utility model provides a carrier 1, including removing base 11, lifting unit 12 and propelling movement subassembly 13, lifting unit 12's first end is connected with removal base 11, and lifting unit 12's second end is connected with propelling movement subassembly 13, and lifting unit 12 can go up and down along vertical direction for removing base 11, and drives propelling movement subassembly 13 and go up and down along vertical direction, and propelling movement subassembly 13 is used for bearing article, and propelling movement subassembly 13 can drive article and move to lifting unit 12's side along the horizontal direction.

The carrier 1 provided by the present application may be used for transporting goods and placing the goods on a shelf in a warehouse, or may be used for transporting hardware equipment and placing the hardware equipment in a chassis of a data center. For convenience of description, the present embodiment will be described in detail by taking the transportation of hardware devices as an example.

The vertical direction is the Z-axis direction in fig. 1, and the horizontal direction is the X-axis direction in fig. 1, it can be understood that the horizontal direction may also be the Y-axis direction, i.e. the direction perpendicular to the drawing plane.

This embodiment is through setting up removal base 11, lifting unit 12 and propelling movement subassembly 13, propelling movement subassembly 13 bears behind the hardware equipment, thereby lifting unit 12 goes up and down along vertical direction for removing base 11 and drives propelling movement subassembly 13 and goes up and down along vertical direction, make the hardware equipment arrive the target height after, propelling movement subassembly 13 drives the inside that the hardware equipment removed to quick-witted case along the horizontal direction, thereby place the hardware equipment on the support of quick-witted case, and thus, can use manpower sparingly, improve the work efficiency of quick-witted case installation.

With continued reference to fig. 2, in some embodiments, the pushing assembly 13 includes a first driving member 131 and a pushing plate 132, the pushing plate 132 is connected to the second end of the lifting assembly 12, and the first driving member 131 is connected to the pushing plate 132 to push the pushing plate 132 to move in a horizontal direction relative to the second end of the lifting assembly 12.

For example, the first driving member 131 may be a hydraulic cylinder, an air cylinder, an electric push rod, or the like, which can perform a linear reciprocating motion, and the pushing plate 132 may be a rectangular flat plate.

The pushing plate 132 is used for carrying hardware equipment, and the width of the pushing plate 132 is smaller than that of the hardware equipment, so that the lifting assembly 12 lifts the hardware equipment to a target height through the pushing plate 132, and the first driving member 131 pushes the pushing plate 132 to move into the chassis along the horizontal direction. The lifting assembly 12 moves downward to support the hardware device on the two supports of the side wall of the case, thereby completing the placement of the hardware device. The first driving member 131 can avoid applying a force directly on the hardware device by pushing the pushing plate 132, thereby reducing damage to the hardware device.

In one possible implementation, the pushing plate 132 is slidably or rollingly coupled to the second end of the lifting assembly 12 for smooth movement of the pushing plate 132.

Specifically, a guide rail, such as a linear guide rail, may be disposed at the second end of the lifting assembly 12, the linear guide rail extends along the horizontal direction, the pushing plate 132 is connected to the sliding block through a screw, and the sliding block slides along the guide rail, so as to enable the pushing plate 132 to move along the horizontal direction relative to the second end of the lifting assembly 12.

Alternatively, a groove may be formed at the second end of the lifting assembly 12, the groove extends in the horizontal direction, a roller matched with the size of the groove is arranged on the pushing plate 132, and the roller rolls in the groove, so that the pushing plate 132 moves in the horizontal direction relative to the second end of the lifting assembly 12.

The upper surface of the pushing plate 132 has a rolling element 1321, and an axis of the rolling element 1321 is perpendicular to a moving direction of the pushing plate 132.

Illustratively, the rolling elements 1321 may be rollers or balls.

When the rolling element 1321 is a roller, the pushing plate 132 may be a separate element, including an upper plate and a lower plate, the upper plate and the lower plate form a hollow accommodating cavity, a plurality of connecting shafts are arranged in the accommodating cavity, the connecting shafts are connected with two opposite side walls of the accommodating cavity, the axes of the connecting shafts are perpendicular to the moving direction of the pushing plate 132, and a plurality of rollers are sleeved on the connecting shafts. The upper plate of the pushing plate 132 is provided with a plurality of openings, the positions of the openings correspond to the positions of the rollers one by one, and the rollers protrude out of the upper surface of the pushing plate 132 through the openings.

When the rolling elements 1321 are balls, the pushing plate 132 may be a separate element, including an upper plate and a lower plate, the lower plate has a circular groove, the balls with matched sizes are placed in the circular groove, the upper plate of the pushing plate 132 has a plurality of circular holes, the positions of the circular holes correspond to the positions of the balls one by one, and after the upper plate and the lower plate are fastened, the balls pass through the upper plate and can roll relative to the circular groove.

The upper plate and the lower plate of the pushing plate 132 may be connected by a screw or a snap, and the connection manner is not particularly limited in this embodiment.

It will be appreciated that when the pusher plate 132 is used to carry hardware equipment, the lifting assembly 12 lifts the hardware equipment to a target height, and the pusher plate 132 is moved horizontally to a chassis position, for example, the end of the pusher plate 132 may abut the end of a bracket within the chassis. Since the hardware device is heavy, the rolling members 1321 are disposed on the pushing plate 132, so that the friction resistance can be reduced by the rolling members 1321, and the heavy hardware device can be easily pushed into the chassis.

Referring to fig. 1 and fig. 2, in the present embodiment, the first driving member 131 is a hydraulic cylinder, a piston rod of the hydraulic cylinder is disposed along a horizontal direction, a cylinder body of the hydraulic cylinder is connected to the second end of the lifting assembly 12, and the piston rod is connected to the lower surface of the pushing plate 132 through a connecting member 133.

Illustratively, the piston rod has a through hole, and the piston rod is connected with the connecting piece 133 through a bolt or through a pin shaft in an interference manner. The connecting member 133 and the lower surface of the pushing plate 132 may be connected by screws or welding, and the connection manner between the piston rod and the connecting member 133 and the connection manner between the connecting member 133 and the pushing plate 132 are not particularly limited in this embodiment.

It can be understood that the pushing assembly 13 adopts a hydraulic transmission mode, and has large bearing capacity and stable movement. Compared with other transmission forms, the volume and the mass of the pushing assembly 13 can be greatly reduced under the condition of outputting the same power.

The piston rod is connected to the lower surface of the pushing plate 132 through the connecting member 133, so that interference between the first driving member 131 and an object placed on the upper surface of the pushing plate 132 can be avoided.

Fig. 3 is a schematic structural diagram of a pushing assembly in a cart according to an embodiment of the present invention, referring to fig. 3, in some embodiments, in order to make the pushing plate 132 move smoothly, the number of the first driving members 131 may be two, and the two first driving members 131 are respectively connected to two opposite sides of the second end of the lifting assembly 12.

Fig. 4 is another schematic structural diagram of a pushing assembly in a truck according to an embodiment of the present invention, and referring to fig. 4, the first driving member 131 is connected below the second end of the lifting assembly 12, and the second end of the lifting assembly 12 is provided with an avoiding groove 1231 for avoiding the connecting member 133.

In order to simplify the structure and reduce the overall weight of the apparatus, the first driving member 131 may be one, the first driving member 131 is connected below the second end of the lifting assembly 12, and the first driving member 131 is located at a middle position of the second end of the lifting assembly 12, and the middle position of the second end of the lifting assembly 12 is provided with an avoidance groove 1231 for avoiding the connecting member 133.

With continued reference to fig. 1 and fig. 2, in the present embodiment, the lifting assembly 12 includes a second driving member 121, a lifting bracket 122 and a top plate 123.

For example, the second driver 121 may be a hydraulic cylinder, an air cylinder, an electric cylinder, or an electric push rod, which can realize linear reciprocating motion.

Specifically, the following describes the detailed structure of the lifting assembly 12 by taking the lifting frame 122 as a scissor frame and the second driving member 121 as a hydraulic cylinder.

The scissor bracket comprises an inner bracket 1221 and an outer bracket 1222, a connecting part is arranged at the center of the inner bracket 1221 and the outer bracket 1222, the inner bracket 1221 is connected with the outer bracket 1222 through a pin, and the inner bracket 1221 and the outer bracket 1222 can rotate relatively. When the stroke required by the lifting assembly 12 is large, the number of the scissor type supports can be multiple, and the ends of the inner support 1221 and the outer support 1222 are alternately connected, that is, the end of the outer support 1222 in one scissor type support is hinged with one side end of the inner support 1221 in the other scissor type support, and the other side end of the inner support 1221 is connected with the end of the next outer support 1222. Referring to fig. 1 and 2, there are 3 scissor-type stands.

To ensure that the scissor-type stand is raised and lowered to the bottom, i.e., the bottom of the scissor-type stand abuts the upper surface of the mobile base 11, one of the inner support 1221 and the outer support 1222 is pivotally connected to the mobile base 11, and the other is pivotally connected to the mobile base 11, which is illustratively located in the bottom scissor-type stand, the inner support 1221 is pivotally connected to the mobile base 11, and the outer support 1222 is pivotally connected to the mobile base 11. The bottom of the inner support 1221 is provided with a roller, the moving base 11 is provided with a rolling groove, and a surface of the roller abuts against an inner wall surface of the rolling groove. When the scissor type support is lifted, the roller moves along the rolling groove relatively. Accordingly, in the top scissor-type stand, the outer stand 1222 is in rolling engagement with the top plate 123 and the inner stand 1221 is hinged to the top plate 123, thereby ensuring that the scissor-type stands move in a horizontal direction toward the same side as the lifting assembly 12 is lifted.

In order to avoid the interference between the second driving member 121 and the lifting bracket 122, the second driving member 121 is connected to the outer bracket 1222 of the scissor bracket to drive the lifting bracket 122 to lift.

Specifically, when there are a plurality of scissor-type stands, the cylinder body of the hydraulic cylinder is connected to the outer bottom stand 1222 via the connecting rod 124. The cylinder body of the hydraulic cylinder is hinged with one end of the connecting rod 124, the other end of the connecting rod 124 is hinged with the end of the outer bracket 1222, and the piston rod of the hydraulic cylinder is hinged with the outer bracket 1222 on the top.

The pushing plate 132 is located above the top plate 123 and is slidably connected to the top plate 123.

In order to ensure that the pushing plate 132 slides smoothly relative to the top plate 123, the upper surface of the top plate 123 is provided with a sliding groove, the sliding groove extends along the moving direction of the pushing plate 132, the lower surface of the pushing plate 132 is provided with an insertion part matched with the sliding groove, and the insertion part is inserted into the sliding groove and slides along the extending direction of the sliding groove. The sliding groove can be a strip-shaped groove, and the insertion part is a rectangular block matched with the groove in size. It can be appreciated that the top plate 123 and the pushing plate 132 are connected in a sliding manner, and the structure is simple and convenient to process and install.

With continued reference to fig. 1 and 2, in the present embodiment, in order to adapt the transportation vehicle 1 to more application scenarios, the application is flexible and does not need to be connected with an external power device. The truck 1 further comprises at least one power assembly 14, the power assembly 14 comprising an electric motor 141 and a hydraulic pump 142, the electric motor 141 being electrically connected to the hydraulic pump 142, the hydraulic pump 142 being adapted to supply hydraulic oil to the first drive 131 or the second drive 121 connected to the hydraulic pump 142.

Specifically, the power assembly 14 is disposed on the mobile base 11, the mobile base 11 is provided with an oil tank, the hydraulic pump 142 is connected to the first driving member 131 and the second driving member 121 through oil pipes, so that hydraulic oil in the oil tank is supplied to the first driving member 131 or the second driving member 121, and return oil of the first driving member 131 and the second driving member 121 is discharged into the oil tank through the oil pipes.

In some embodiments, the mobile base 11 includes a base body 111 and a wheel assembly 112 coupled below the base body 111, it being understood that when the lifting assembly 12 is lowered to the lowest position, an item can be placed on the push plate 132 and transported by the mobile base 11.

Wheel assembly 112 includes a power wheel set 1121 and a steering wheel set 1122.

For example, the wheel axle of the power wheel set 1121 may be driven by a motor assembly to provide assistance to a user, so that when the weight of the transported object is heavy, the working strength can be effectively reduced, and the transportation working efficiency can be improved.

Wherein, the base body 111 is provided with a foldable and expandable armrest 1111.

Illustratively, the armrest 1111 is disposed on the base body 111, and is positioned at one side with respect to the moving direction of the pushing assembly 13, and the armrest 1111 is hinged to the base body 111 such that the armrest 1111 can be unfolded when it is necessary to transport an object using the transporting vehicle 1, and the armrest 1111 can be folded when it is necessary to place an object at a high place using the transporting vehicle 1, thereby saving space and avoiding interference.

Wherein, handrail 1111 includes two telescopic links and connects the arc handle of telescopic link, the stiff end and the 111 fixed connection of base body of telescopic link, the removal end and the arc handle of telescopic link are connected. The removal end of telescopic link can reciprocate relatively the stiff end of telescopic link, and the removal of telescopic link is served and is provided with the elastic component, is provided with a plurality of round holes of interval arrangement on the fixed end of telescopic link, and when the removal end of telescopic link removed relevant position, the elastic component card was established in the round hole to realize the fixed of handrail 1111 height. When the height of the handrail 1111 needs to be adjusted, the arc-shaped handle is pulled after the elastic piece is pressed, so that the moving end of the telescopic rod moves relative to the fixed end. Like this, when needs utilize carrier 1 to carry out article transport, the user can adjust suitable height with handrail 1111 according to own height to be convenient for promote, improve user experience and feel.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. A carrier is characterized by comprising a movable base, a lifting assembly and a pushing assembly;

the first end of the lifting assembly is connected with the movable base, the second end of the lifting assembly is connected with the pushing assembly, and the lifting assembly can lift relative to the movable base along the vertical direction and drives the pushing assembly to lift along the vertical direction;

the pushing assembly is used for bearing an article, and the pushing assembly can drive the article to move to the side of the lifting assembly along the horizontal direction.

2. The cart of claim 1, wherein said pusher assembly comprises a first drive member and a pusher plate, said pusher plate coupled to said second end of said lift assembly, said first drive member coupled to said pusher plate for urging said pusher plate to move in a horizontal direction relative to said second end of said lift assembly.

3. The cart of claim 2, wherein said pusher plate is slidably or rollingly coupled to said second end of said lift assembly;

the upper surface of the pushing plate is provided with a rolling part, and the axis of the rolling part is vertical to the moving direction of the pushing plate.

4. The cart according to claim 2, wherein the first driving member is a hydraulic cylinder, a piston rod of the hydraulic cylinder is disposed in a horizontal direction, a cylinder body of the hydraulic cylinder is connected to the second end of the lifting assembly, and the piston rod is connected to a lower surface of the pushing plate through a connecting member.

5. The cart of claim 4, wherein said first driving members are two in number, and two of said first driving members are respectively connected to opposite sides of said second end of said lifting assembly;

or, the first driving piece is connected below the second end of the lifting assembly, and an avoiding groove for avoiding the connecting piece is formed in the second end of the lifting assembly.

6. The cart of any of claims 2 to 5, wherein said lift assembly comprises a second drive, a lift bracket and a top plate;

the bottom of the lifting support is in rolling connection or hinged connection with the movable base;

the second driving piece is connected with the lifting support to drive the lifting support to lift;

the top of the lifting support is in rolling connection or hinged connection with the top plate, and the pushing plate is located above the top plate and is in sliding connection with the top plate.

7. The cart of claim 6, wherein said lifting frame is a scissor frame and said second drive member is a hydraulic cylinder, said second drive member configured to drive said scissor frame to fold or unfold.

8. The cart according to claim 6, wherein the top plate has a sliding groove formed on an upper surface thereof, the sliding groove extending in a moving direction of the pushing plate, and the pushing plate has an insertion portion formed on a lower surface thereof and adapted to the sliding groove, the insertion portion being inserted into the sliding groove and sliding in the extending direction of the sliding groove.

9. The cart of claim 6, further comprising at least one power assembly, said power assembly comprising an electric motor and a hydraulic pump, said electric motor being electrically connected to a hydraulic pump for supplying hydraulic oil to said first drive or said second drive connected to said hydraulic pump.

10. The cart of claim 1, wherein said mobile base comprises a base body and a wheel assembly connected below said base body, said wheel assembly comprising a power wheel set and a steering wheel set;

the base body is provided with a foldable and unfoldable handrail.

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