CN211280620U - Power system and cross-country scissor aerial work platform - Google Patents

Abstract

The utility model provides a fork aerial working platform is cut to driving system and cross-country, relates to aerial working platform technical field, driving system includes chassis, power device and air cleaner, the guard plate is installed to the edge zone of chassis, power device with air cleaner all assemble in the chassis, be provided with the door body that can open and shut on the guard plate, air cleaner is located other the guard plate, and with the door body sets up relatively. Cross-country scissor aerial working platform uses has driving system, driving system can expose air cleaner through opening the guard plate upper door body to change air cleaner's filter core, operating space is big, is convenient for change.

Description

Power system and cross-country scissor aerial work platform

Technical Field

The utility model relates to an aerial working platform field particularly, relates to a fork aerial working platform is cut to driving system and cross-country.

Background

An aerial work platform is a large movable device used for operations such as equipment security check, maintenance and the like. The aerial work platform comprises a bottom frame and a lifting frame, wherein the bottom frame is provided with a traveling wheel for moving, the lifting frame is arranged on the bottom frame, and the bottom frame is provided with a power system for driving the bottom frame to move and driving the lifting frame to lift.

The power system usually includes an engine, the engine is connected with an air filter (or called air cleaner), and after the aerial work platform runs for a period of time, the filter element of the air filter needs to be replaced. However, because the space of the bottom frame is limited and more devices are arranged on the bottom frame, the operating space for replacing the filter element on the bottom frame is small, and the difficulty of replacing the filter element is high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fork aerial working platform is cut to driving system and cross-country, it can provide bigger operating space, the operation of being convenient for the filter core is changed.

The technical scheme of the utility model is realized like this:

a power system, comprising: the protective plate is installed at the edge area of the bottom frame, the power device and the air filter are all assembled on the bottom frame, a door body capable of being opened and closed is arranged on the protective plate, and the air filter is located beside the protective plate and is arranged opposite to the door body.

The utility model discloses among the feasible technical scheme, the chassis includes the chassis and holds in the palm the carrier, it is provided with the gyro wheel to hold in the palm the carrier, hold in the palm the carrier pass through the gyro wheel with chassis sliding assembly, hold in the palm the carrier with connect through locking mechanism between the chassis, power device air cleaner with the guard plate all assemble in hold in the palm the carrier.

The utility model discloses among the feasible technical scheme, still include tail gas treatment mechanism, tail gas treatment mechanism includes tail gas treater and exhaust emission pipeline, tail gas treatment mechanism with power device's upper portion is connected, exhaust emission pipeline with the tail gas treater is connected, just the exhaust emission pipeline downwardly extending, in order to incite somebody to action exhaust emission extremely the chassis below.

The utility model discloses among the feasible technical scheme, the guide cylinder is installed on the chassis, the guide cylinder is located hold in the palm carrier below, the tail gas discharge pipe route the top of guide cylinder stretches into the guide cylinder, the bottom of guide cylinder is provided with first opening.

The utility model discloses among the feasible technical scheme, the support carrier is connected with the tow chain, the power device intercommunication has the oil supply pipeline, the oil supply pipeline stretches into the tow chain is followed the tow chain extends.

In a possible embodiment of the present invention, the power device is connected to the chassis through a damper.

The utility model discloses among the feasible technical scheme, power device is connected with moisturizing heat dissipation mechanism, moisturizing heat dissipation mechanism is including integrated expansion tank and radiator in an organic whole.

The utility model discloses among the feasible technical scheme, locking mechanism includes locked groove structure and hasp structure, the locked groove structure with the chassis is connected, the hasp structure with hold in the palm the carrier and connect, the locked groove structure is provided with the draw-in groove, the locked groove structure includes latch hook, handle and the elastic component that resets, the elastic component that resets connect in the latch hook with hold in the palm between the carrier, the latch hook is used for stretching into the draw-in groove is with connecting the chassis with hold in the palm the carrier.

The utility model discloses among the feasible technical scheme, locking mechanical system's quantity is two, two locking mechanical system is located respectively the both sides of guard plate.

A cross-country scissor aerial work platform comprises a lifting frame and a power system according to any one of the technical schemes, wherein the lifting frame is connected with the power system, and the power system is used for driving the lifting frame to move up and down.

The beneficial effects of the utility model are that: in the running process of the power system, the door body on the protection plate is in a closed state, and the edge area of the bottom frame of the protection plate plays a role in protecting the power device and the air filter. When the filter element needs to be replaced, the door body is opened, and the air filter is exposed, so that the filter element of the air filter can be replaced conveniently.

The utility model provides a driving system sets up air cleaner in the edge of chassis, and sets up a body on the guard plate, opens the door and can expose air cleaner to for changing air cleaner's filter core provides bigger operating space, be convenient for carry out filter core change operation.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a power system provided by an embodiment of the present invention;

fig. 2 is a first schematic structural diagram of a power system (a chassis is not shown) according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram ii of a power system (a chassis is not shown) according to an embodiment of the present invention;

fig. 4 is a first schematic structural diagram of a water replenishing and heat dissipating mechanism in a power system according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a water replenishing and heat dissipating mechanism in a power system according to an embodiment of the present invention;

fig. 6 is a third schematic structural view of a water replenishing and heat dissipating mechanism in the power system according to the embodiment of the present invention;

fig. 7 is a schematic structural diagram of a power system (a chassis and a protection plate are not shown) provided by an embodiment of the present invention;

FIG. 8 is an enlarged view of a portion of FIG. 7 at A;

fig. 9 is a schematic view illustrating a connection between a chassis and a supporting member in a power system according to an embodiment of the present invention;

fig. 10 is an enlarged view of the junction of the chassis and the carrier of fig. 9.

In the figure:

10-a chassis; 11-a travelling wheel; 20-carrying piece; 21-a roller; 30-protection plate; 31-a door body; 40-a power plant; 50-an air filter; 61-a keyway structure; 62-a locking structure; 621-latch hook; 622-handle; 623-a return spring; 624-a rotating shaft; 71-a tail gas processor; 72-a tail gas discharge pipeline; 73-a guide cylinder; 74-first opening; 75-a second opening; 76-a baffle; 80-a drag chain; 90-a water replenishing and heat dissipating mechanism; 91-an expansion tank; 92-heat sink.

Detailed Description

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. The components of the embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the 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.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the products of the present invention are usually placed when in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the power system or the element that is referred to must have a specific position, be constructed and operated in a specific position, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

First embodiment

Referring to fig. 1 to 3, the present embodiment provides a power system, including: the protective plate 30 is installed at the edge area of the bottom frame, the power device 40 and the air filter 50 are both assembled on the bottom frame, the door body 31 capable of being opened and closed is arranged on the protective plate 30, and the air filter 50 is located beside the protective plate 30 and is arranged opposite to the door body 31.

The air filter 50 is connected with the power device 40, the power device 40 is located in the middle region of the bottom frame, the air filter 50 is located in the edge region of the bottom frame and close to the door body 31 of the protection plate 30, so that the air filter 50 is directly exposed after the door body 31 of the protection plate 30 is opened. Specifically, air cleaner 50 has the filter core and holds the chamber, and the filter core holds the chamber lid and is equipped with the lid, places air cleaner 50 after the chassis for the lid is towards the door body 31, opens a body 31 after, can directly open the lid in order to change the filter core, thereby is convenient for carry out the change operation of filter core.

In the preferred embodiment of the present embodiment, the power unit 40 is connected to the undercarriage via a shock absorber. With such an arrangement, the vibration amplitude of the power device 40 can be reduced through the shock absorber, so as to provide better protection for the power device 40, and thus the service life of the power device 40 is prolonged.

In order to facilitate maintenance of other devices on the underframe, further, as shown in fig. 1 and 2, the underframe comprises a chassis 10 and a carrier 20, the carrier 20 is provided with rollers 21, the carrier 20 is slidably assembled with the chassis 10 through the rollers 21, the carrier 20 is connected with the chassis 10 through a locking mechanism, and a power device 40, an air filter 50 and a protection plate 30 are assembled on the carrier 20.

That is, the devices on the chassis are all mounted on the carrier 20, and the carrier 20 is movable relative to the chassis 10. During the operation of the power system, the carrier 20 is connected with the chassis 10 through a locking mechanism. When the equipment on the chassis needs to be overhauled or maintained, the locking mechanism is opened, and the carrier 20 is pulled out outwards, so that the carrier 20 drives the equipment mounted on the carrier to move relative to the chassis 10, and a larger operation space is provided for equipment overhauling or maintenance.

The carrier 20 may have a plate-like structure, and the rollers 21 are installed at the sides of the carrier 20. A sliding groove is provided on the chassis 10, into which the roller 21 extends and can move along.

In one embodiment, the number of the protection plates 30 is one, the protection plates 30 are installed on the front side edge of the carrier 20, the side guard plates are installed on both sides of the chassis 10, and when the carrier 20 is fixed to the chassis 10, the devices (including the power unit 40 and the air filter 50) on the carrier 20 are located in the area enclosed by the protection plates 30 and the side guard plates.

Install walking wheel 11 on the base, walking wheel 11 can drive the base and remove to drive whole driving system and remove, walking wheel 11 can be connected with power device 40, is provided power by power device 40 for walking wheel 11 and rolls with drive walking wheel 11.

The carrier 20 is connected to the chassis 10 by a locking mechanism having a plurality of selectable configurations, for example, the locking mechanism may be a locking pin type, a pin is provided on the carrier 20, and a socket is provided on the chassis 10, so that when the carrier 20 is pushed into place, the pin is inserted into the socket, thereby fixing the carrier 20 to the chassis 10. Before the carriage 20 is moved, the latch is pulled out, so that the carriage 20 is unlocked from the chassis 10 to pull out the carriage 20.

In a preferred embodiment of this embodiment, as shown in fig. 9 and 10, the locking structure adopts the following specific structure: the locking mechanism comprises a locking groove structure 61 and a locking structure 62, the locking groove structure 61 is connected with the chassis 10, the locking structure 62 is connected with the carrying piece 20, the locking groove structure 61 is provided with a clamping groove, the locking structure 62 comprises a locking hook 621, a handle 622 and a reset elastic piece 623, the reset elastic piece 623 is connected between the locking hook 621 and the carrying piece 20, and the locking hook 621 and the carrying piece 20 are connected in a rotating mode. The latch hook 621 is connected with the handle 622, and the latch hook 621 is used for being locked with the card slot.

When the carrier 20 is pushed to the chassis 10, the latch hook 621 gradually approaches the latch slot structure 61, and after the carrier 20 is pushed in place, the latch hook 621 extends into the latch slot, so that the carrier 20 is connected to the chassis 10, and the reset elastic member 623 pulls the latch hook 621 to prevent the latch hook 621 from being unhooked during a shock. The latch hook 621 can be separated from the latch groove by pulling the handle 622, thereby separating the carrier 20 from the chassis 10.

The one end of latch hook 621 is pointed end, and the other end is connected with handle 622, is certain angle setting between handle 622 and the latch hook 621, and the one end that the elasticity resets is connected with latch hook 621, and after latch hook 621 rotated, the elasticity resets and stores power. The opening of the card slot faces in the opposite direction to the extension direction of the tip of the latch hook 621.

The elastic reset element can be a torsion spring, the latch hook 621 is rotatably connected with the carrier element 20 through the torsion spring, and the torsion spring stores force during the rotation of the latch hook 621. Or the elastic reset element may also be a tension spring, as shown in fig. 10, an opening of the locking groove faces, a tip of the locking hook 621 faces downward, one end of the locking hook 621 connected to the handle 622 is rotatably connected to the supporting element 20 through the rotating shaft 624, the tension spring is located below the locking hook 621, and a connection point between one end of the tension spring and the locking hook 621 is located between the tip and the other end of the locking hook 621.

In the direction shown in fig. 10, the locking groove structure 61 is located on the left side, the locking structure 62 is located on the right side, the left side of the locking hook 621 has an inclined surface, the inclined surface is inclined from left to right from top to bottom, and a matched inclined surface is arranged on the right side wall of the locking groove structure. Fig. 10 is a schematic view of the lock mechanism in the locked state. When the handle 622 is rotated in the clockwise direction, the latch 621 is lifted up to be disengaged from the latch groove, so that the carrier 20 is separated from the chassis 10. Pulling the carriage 20 to the right causes the carriage 20 to move relative to the chassis 10. When the carrier 20 is reset, the carrier 20 is pushed to the left, and the latch hook 621 moves to the left along with the carrier 20. The left side of latch hook 621 contacts with the right side of draw-in groove structure, and the left side of latch hook 621 rotates clockwise under the effect of the right side of draw-in groove structure, and the elastic component 623 that resets this moment is tensile to be held up power, lifts a distance at latch hook 621 after, and latch hook 621 separates with the right side of draw-in groove structure, and latch hook 621 moves the region relative with the draw-in groove to the left, and latch hook 621 is to the anticlockwise swing under the effect of elastic component 623 that resets to stretch into the draw-in groove.

Specifically, in one embodiment, the catch structure 62 can be directly coupled to the carrier member 20, such as by mounting the catch structure 62 to a front edge region of the carrier member 20 or mounting a bracket on the carrier mechanism and mounting the catch structure 62 to the bracket. Alternatively, in another embodiment, the locking structure 62 can be connected to the carrier 20 through the protection plate 30, that is, the locking hook 621 is mounted on the protection plate 30, and the locking hook 621 can rotate relative to the carrier 20 because the protection plate 30 is fixedly connected to the carrier 20.

In one embodiment, the latch 621 is integrally formed with the handle 622 during the manufacturing process.

In the preferred embodiment of the present invention, the number of the locking mechanisms is two, and the two locking mechanisms are respectively located at two sides of the protection plate 30. Specifically, when the latch mechanism is mounted to the protection plate 30, the latch mechanism may be mounted to both side edge regions of the protection plate 30 and located at a side of the protection plate 30 facing the power unit 40. The handle 622 of the latch mechanism is located on the side of the fender 30 facing away from the power unit 40 so that the operator can pull on the handle 622 from the outside of the fender 30.

In the power system provided in this embodiment, preferably, the power system further includes an exhaust gas treatment mechanism, the exhaust gas treatment mechanism includes an exhaust gas processor 71 and an exhaust gas discharge pipeline 72, the exhaust gas treatment mechanism is connected to the upper portion of the power device 40, the exhaust gas discharge pipeline 72 is connected to the exhaust gas processor 71, and the exhaust gas discharge pipeline 72 extends downward to discharge exhaust gas to below the chassis 10. The exhaust gas treatment mechanism is used for filtering and discharging exhaust gas discharged by the power device 40. Specifically, the exhaust gas processor 71 is configured to filter the exhaust gas discharged from the power plant 40, and the exhaust gas discharge pipeline 72 is configured to discharge the processed gas out of the power system.

The exhaust emission pipeline 72 is connected to one side of the exhaust gas processor 71, which is far away from the power device 40, and the exhaust emission pipeline 72 extends downwards after extending a set distance to one side, which is far away from the power device 40, or the exhaust emission pipeline 72 extends downwards in an inclined manner to the direction, which is far away from the power device 40, and the other end of the exhaust emission pipeline 72 is located in the bottom area of the power system so as to discharge the exhaust gas to the lower side of the power system.

On one hand, because the exhaust gas discharge pipeline 72 is spaced from the power plant 40, the influence of the high temperature of the exhaust gas discharge pipeline 72 on the power system can be avoided. On the other hand, the exhaust gas is directly discharged to the outside of the power system through the exhaust gas discharge pipeline 72, so that the exhaust gas can be prevented from being diffused in the power system.

As shown in fig. 2, fig. 7 and fig. 8, in a preferred embodiment of this embodiment, the chassis 10 is provided with a guide cylinder 73, the guide cylinder 73 is located below the carrying member, the exhaust gas discharge pipeline 72 extends into the guide cylinder 73 from the top of the guide cylinder 73, and the bottom of the guide cylinder 73 is provided with a first opening 74. The exhaust emission pipeline 72 is extended into the guide cylinder 73, on one hand, the guide cylinder 73 has a certain limiting effect on the exhaust emission pipeline 72; on the other hand, the guide cylinder 73 further guides the gas discharged through the exhaust gas discharge line 72.

As shown in fig. 8, the guide cylinder 73 has a rectangular cylindrical structure, the exhaust emission line 72 extends through the top surface of the guide cylinder 73, the bottom surface of the guide cylinder 73 is provided with a first opening 74, and the side surface of the guide cylinder 73 is provided with a second opening 75. The second opening 75 is located at a region where the guide cylinder 73 protrudes downward below the base pan 10, thereby increasing exhaust efficiency.

Further, a baffle 76 is sleeved on the exhaust gas discharge pipe, the baffle 76 is matched with the shape of the top opening of the guide cylinder 73, when the carrier 20 is locked with the chassis 10, the baffle 76 is buckled at the top opening of the guide cylinder 73, and the baffle 76 seals the top opening of the guide cylinder 73 so as to prevent the gas discharged to the guide cylinder 73 from the exhaust gas discharge pipeline 72 from flowing upwards through a gap between the guide cylinder 73 and the exhaust gas discharge pipeline 72. Further, a seal ring is provided between the baffle 76 and the top plate of the guide cylinder 73, and the seal ring may be attached to the outside of the baffle 76 or to the inner wall of the opening of the top plate of the guide cylinder 73.

Further, a limiting table is arranged at an opening of a top plate of the guide cylinder 73, and an edge area of the baffle 76 is erected at the limiting table. When a stop is provided, the seal may also be provided on the top surface of the stop, or in the region of the baffle 76 opposite the stop.

As shown in fig. 2, 4, 5, 6 and 7, the power unit 40 is connected to a water replenishing and heat dissipating mechanism 90, and the water replenishing and heat dissipating mechanism 90 includes an expansion tank 91 and a radiator 92 integrated together. The expansion tank 91 is used to replenish water for the power unit 40, and the radiator 92 is used to dissipate heat for the power unit 40. The radiator 92 is formed by coiling a radiating pipe. The radiator 92 is integrated with the expansion tank 91.

Specifically, as shown in fig. 7, the water replenishing heat dissipating mechanism 90 is mounted on the carrier 20 and located beside the shielding plate 30. In an alternative embodiment, the water replenishing heat dissipating mechanism 90 is located above the air filter 50. The water supplementing and heat dissipating mechanism 90 can be fixed with the supporting part 20 through a support, or the water supplementing and heat dissipating mechanism 90 is connected with the protection plate 30 and fixed with the supporting and heat dissipating mechanism through the protection plate 30.

As shown in fig. 3 and 9, in a preferred embodiment, the power device 40 is communicated with a drag chain 80, the carrier 20 is connected with the drag chain 80, an oil supply pipeline extends along the drag chain 80 to be communicated with a device to be driven, which can be a lifting frame, so that the power device 40 controls the lifting frame to perform lifting movement. The drag chain 80 can protect the oil supply pipeline, and reduce the abrasion of the oil supply pipeline in the bending and moving processes in the moving process of the carrying piece 20. Specifically, the shielding plate 30 is installed at the front side of the carrier 20, and the tow chain 80 is connected to the rear side of the carrier mechanism. Specifically, the tow chain 80 is surrounded by a plurality of mutually hinged connecting plates, and has a channel therein, along which an oil supply line extends. The drag chain 80 has a U-shaped structure, and the opening of the U-shaped structure faces the direction of the power device 40.

In the present embodiment, the power unit 40 includes an engine.

Second embodiment

The embodiment provides a cross-country scissor aerial work platform, which comprises the power system provided by the first embodiment, and the cross-country scissor aerial work platform further comprises a lifting frame, wherein the lifting frame is connected with the power system, and the power system is used for driving the lifting frame to move up and down.

Because the power system provided by the first embodiment is provided, the cross-country scissor aerial work platform provided by the embodiment has the same advantages as the power system, and the detailed description is omitted.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by 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 (10)

1. A power system, comprising: the protective plate is installed at the edge area of the bottom frame, the power device and the air filter are all assembled on the bottom frame, a door body capable of being opened and closed is arranged on the protective plate, and the air filter is located beside the protective plate and is arranged opposite to the door body.

2. The power system according to claim 1, wherein the chassis comprises a chassis and a carrying member, the carrying member is provided with a roller, the carrying member is slidably assembled with the chassis through the roller, the carrying member is connected with the chassis through a locking mechanism, and the power device, the air filter and the protection plate are assembled on the carrying member.

3. The power system of claim 2, further comprising an exhaust treatment mechanism comprising an exhaust processor coupled to an upper portion of the power plant and an exhaust emission line coupled to the exhaust processor and extending downward to emit the exhaust under the chassis.

4. The power system according to claim 3, wherein the chassis is provided with a guide cylinder, the guide cylinder is positioned below the carrying piece, the tail gas discharge pipe extends into the guide cylinder from the top of the guide cylinder, and the bottom of the guide cylinder is provided with a first opening.

5. The power system of claim 2, wherein a tow chain is connected to the payload, and the power plant is in communication with an oil supply line extending into and along the tow chain.

6. The power system of claim 1, wherein the power plant is coupled to the undercarriage by a shock absorber.

7. The power system of claim 1, wherein the power device is connected with a water supplementing and heat dissipating mechanism, and the water supplementing and heat dissipating mechanism comprises an expansion water tank and a heat sink which are integrated into a whole.

8. The power system according to claim 2, wherein the locking mechanism comprises a locking groove structure and a locking structure, the locking groove structure is connected with the chassis, the locking structure is hinged with the carrying member, the locking groove structure is provided with a locking groove, the locking structure comprises a locking hook, a handle and a reset elastic member, the reset elastic member is connected between the locking hook and the carrying member, the locking hook is connected with the handle, and the locking hook is used for extending into the locking groove to connect the chassis and the carrying member.

9. The powertrain system of claim 2, wherein the number of the locking mechanisms is two, and the two locking mechanisms are respectively located on both sides of the fender.

10. An off-road scissor aerial work platform, characterized in that the off-road scissor aerial work platform comprises a lifting frame and a power system according to any one of claims 1 to 9, wherein the lifting frame is connected with the power system, and the power system is used for driving the lifting frame to move up and down.

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