阅读说明：本技术 电动起重机及超起电动起重机 (Electric crane and super-lift electric crane ) 是由 康滨 廖建国 于 2020-07-27 设计创作，主要内容包括：本发明提供一种电动起重机及超起电动起重机,涉及起重机结构技术领域,为解决现有技术中存在的电动起重机的电池占用空间较大、且重量较大,导致电动起重机笨重且占地体积较大的问题而设计。本发明提供的电动起重机,包括上车体、下车体、臂架、变幅桅杆、中央配重箱、后配重箱以及电池组。上车体转动架设于下车体上方,臂架、变幅桅杆以及后配重箱依次设置于上车体；中央配重箱设置于下车体。电池组设置于中央配重箱,和/或后配重箱,电池组用于提供电动起重机工作电力。(The invention provides an electric crane and a super-lift electric crane, relates to the technical field of crane structures, and aims to solve the problems that in the prior art, batteries of the electric crane occupy larger space and heavier weight, so that the electric crane is heavy and occupies larger space. The invention provides an electric crane which comprises an upper crane body, a lower crane body, an arm support, an amplitude-variable mast, a central weight box, a rear weight box and a battery pack. The upper vehicle body is rotatably erected above the lower vehicle body, and the arm support, the amplitude-variable mast and the rear weight box are sequentially arranged on the upper vehicle body; the central weight box is arranged on the lower vehicle body. The battery pack is arranged on the central weight box and/or the rear weight box and is used for providing working power for the electric crane.)

1. An electric crane is characterized by comprising an upper crane body (100), a lower crane body (200), an arm support (300), an amplitude-variable mast (400), a central weight box (600), a rear weight box (500) and a battery pack (010);

the upper vehicle body (100) is rotatably erected above the lower vehicle body (200), and the arm support (300), the variable-amplitude mast (400) and the rear weight box (500) are sequentially arranged on the upper vehicle body (100); the central weight box (600) is arranged on the lower vehicle body (200);

the battery pack (010) is arranged at the central weight box (600) and/or the rear weight box (500), and the battery pack (010) is used for providing the working power of the electric crane.

2. Electric crane according to claim 1, characterized in that the central weight box (600) comprises a first box (610), the first box (610) having a first housing cavity (611) for housing the battery pack (010) and a weight, the first box (610) further being provided with a first mounting groove for fixing the battery pack (010).

3. Electric crane according to claim 2, characterized in that the center weight box (600) further comprises a first cover plate (620) connected to the first box (610), the first cover plate (620) being capable of opening and closing the first receiving chamber (611).

4. The electric crane according to any one of claims 1-3, wherein the rear weight box (500) comprises a second box body (510), the second box body (510) having a second receiving cavity (511) for receiving the battery pack (010) and a weight block, the second box body (510) further having a second mounting groove for fixing the battery pack (010).

5. Electric crane according to claim 4, characterized in that the rear weight box (500) comprises a second cover plate (520) connected to the second box (510), the second cover plate (520) being able to open and close the second receiving chamber (511).

6. The electric crane as claimed in claim 1, wherein the boom (300) is rotatably connected to the upper car body (100), the end of the boom (300) and the end of the luffing mast (400) are both connected with a luffing pull plate (900), both luffing pull plates (900) are connected with movable pulleys, and the increase and decrease of the distance between the movable pulleys can drive the boom (300) to rotate.

7. Super lift electric crane, characterized in that it comprises a super lift device and an electric crane according to any of claims 1-6, said super lift device being arranged on said upper car body (100).

8. The super lift electric crane according to claim 7, wherein the super lift device comprises a super lift mast (700) and a super lift weight box (800), the super lift mast (700) is arranged between the boom (300) and the luffing mast (400), and the super lift weight box (800) is hoisted to the tail end of the super lift mast (700);

the super lift weight pod (800) is also capable of loading the battery pack (010).

9. The super electric crane according to claim 8, characterized in that said super weight box (800) comprises a third box body (810), said third box body (810) having a third housing cavity (811) for housing said battery pack (010) and a weight block, said third box body (810) further opening a third mounting groove for fixing said battery pack (010).

10. Super lift electric crane according to claim 9, characterized in that said super lift weight box (800) further comprises a third cover plate (820) connected to said third box (810), said third cover plate (820) being able to open and close said third housing chamber (811).

Technical Field

The invention relates to the technical field of crane structures, in particular to an electric crane and a super-lift electric crane.

Background

Mast cranes generally utilize movable pulley blocks to connect an amplitude mast with an arm support, and the angle of the arm support is adjusted through the change of the distance between the movable pulley blocks, so that the hoisting radius and the hoisting height of the arm support are changed, and the amplitude is changed. While a mobile mast crane typically also includes a lower carbody having crawlers or the like.

In order to meet the requirements of environmental protection and clean energy use, an electric crane exists in the prior art, and a power source of a lifting device, a power source of a traveling device and a rotating power source of the electric crane are all provided by batteries.

The battery of the electric crane in the prior art occupies a large space and has a large weight, so that the electric crane is very heavy and occupies a large area.

Disclosure of Invention

The invention aims to provide an electric crane and a super-lift electric crane, and aims to solve the technical problems that the electric crane is heavy and occupies a large area due to large occupied space and heavy weight of a battery of the electric crane in the prior art.

The invention provides an electric crane which comprises an upper crane body, a lower crane body, an arm support, an amplitude-variable mast, a central weight box, a rear weight box and a battery pack.

The upper vehicle body is rotatably erected above the lower vehicle body, and the arm support, the amplitude-variable mast and the rear weight box are sequentially arranged on the upper vehicle body; the central weight box is arranged on the lower vehicle body.

The battery pack is arranged on the central weight box and/or the rear weight box and is used for providing working electric power for the electric crane.

Further, central weight box includes first box, first box has the first chamber that holds that is used for holding group battery and balancing weight, first box still offers and is used for fixing the first mounting groove of group battery.

Further, the center weight box further comprises a first cover plate connected with the first box body, and the first cover plate can open and close the first accommodating cavity.

Further, the rear weight box comprises a second box body, the second box body is provided with a second accommodating cavity used for accommodating the battery pack and the counterweight block, and the second box body is further provided with a second mounting groove used for fixing the battery pack.

Further, the rear weight box comprises a second cover plate connected with the second box body, and the second cover plate can open and close the second accommodating cavity.

Furthermore, the arm support is rotatably connected to the upper vehicle body, the tail end of the arm support and the tail end of the variable amplitude mast are both connected with a variable amplitude pulling plate, the two variable amplitude pulling plates are both connected with movable pulleys, and the arm support can be driven to rotate by increasing and decreasing the distance between the movable pulleys.

The invention also provides a super-lift electric crane, which comprises a super-lift device and the electric crane, wherein the super-lift device is arranged on the upper vehicle body.

Further, the superlift device comprises a superlift mast and a superlift counterweight box, the superlift mast is arranged between the arm support and the luffing mast, and the superlift counterweight box is hung at the tail end of the superlift mast.

The super lift weight box is also capable of carrying the battery pack.

Further, the super-lift counterweight box comprises a third box body, the third box body is provided with a third accommodating cavity for accommodating the battery pack and the counterweight block, and the third box body is further provided with a third mounting groove for fixing the battery pack.

Further, the super-lift counterweight box further comprises a third cover plate connected with the third box body, and the third cover plate can open and close the third accommodating cavity.

The electric crane and the super-lift electric crane provided by the invention have the beneficial effects that:

the invention provides an electric crane which comprises an upper crane body, a lower crane body, an arm support, an amplitude-variable mast, a central weight box, a rear weight box and a battery pack. The upper vehicle body is rotatably erected above the lower vehicle body, and the arm support, the amplitude-variable mast and the rear weight box are sequentially arranged on the upper vehicle body; the central weight box is arranged on the lower vehicle body. The battery pack is arranged on the central weight box and/or the rear weight box and is used for providing working power for the electric crane.

By utilizing the structure, the battery pack positioned on the central weight box and the rear weight box, or the battery pack positioned on the central weight box, or the battery pack positioned on the rear weight box can provide electric power for the electric crane to travel in the working process of the electric crane, can provide electric power required by hoisting of the electric crane, and can also provide electric power required by the rotation of the upper vehicle body of the electric crane relative to the lower vehicle body. The central weight box is arranged on the lower vehicle body and used for reducing the gravity center of the whole electric crane, so that the electric crane is more stable in the hoisting and advancing working processes and is prevented from toppling over. The rear weight box, the variable amplitude mast and the arm support are sequentially arranged, so that the rear weight box is positioned on one side of the variable amplitude mast, which is deviated from the arm support, and the rear weight box can balance the moment of a heavy object at the position of the upper vehicle body when the electric crane works for hoisting, thereby avoiding the problem that the electric crane topples over towards the arm support direction due to overlarge moment caused by the heavy object when the electric crane works for hoisting.

In the structure, if the battery pack is only arranged in the central weight box, the weight of the battery pack not only meets the weight balancing function of the central weight box, but also meets the working power supply of the whole electric crane. If the battery pack is only arranged in the rear weight box, the weight of the battery pack not only meets the weight balancing function of the rear weight box, but also meets the working power supply of the whole electric crane. If the battery pack is split into two groups and is respectively arranged in the rear weight box and the central weight box, the counterweight effect of the rear weight box and the central weight box can be met, and the working power supply of the whole electric crane can be met. The central weight box and/or the rear weight box are/is used for bearing the battery pack, and one of the central weight box and the rear weight box reduces the whole machine space of the electric crane independently occupied by the battery pack, so that the layout is more reasonable; and secondly, the weight of the whole machine is reduced, the weight of the battery pack is used as a balance weight, the waste of the weight of the battery pack is avoided, and the weight of the whole machine of the electric crane is reduced. Therefore, the technical problems that the electric crane is heavy and occupies a large area due to the fact that the battery of the electric crane occupies a large space and has a large weight in the prior art are solved.

The super-lift electric crane provided by the invention comprises a super-lift device and the electric crane, wherein the super-lift device is arranged on an upper vehicle body.

The hoisting weight of the arm support can be increased by utilizing the super-lifting device, and meanwhile, the hoisting range of the arm support can be expanded. In addition, the advantages of the super-lift electric crane, including the advantages of the electric crane, are not repeated.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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 other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of an electric crane provided in an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a super-lift electric crane according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a rear weight box and a battery pack of the electric crane according to the embodiment of the invention;

FIG. 4 is a schematic structural diagram of a central weight box and a battery pack of the electric crane according to the embodiment of the present invention;

fig. 5 is a schematic structural diagram of a super-lift counterweight box and a battery pack of an electric crane according to an embodiment of the present invention.

Icon: 100-getting on the vehicle body; 200-lower vehicle body; 300-arm support; 400-variable amplitude mast; 500-rear weight box; 510-a second box; 511-a second containing chamber; 520-a second cover plate; 600-center weight box; 610-a first box; 611 — a first containing cavity; 620-a first cover plate; 700-super-lift mast; 800-super lifting weight box; 810-a third box; 811-a third receiving chamber; 820-a third cover plate; 900-amplitude-variable pulling plate; 010-battery pack.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the terms "first," "second," "third," and "fourth" in the description of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Unless expressly stated or limited otherwise, the terms "connected" and "attached" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; can be directly connected or connected through an intermediate medium; either mechanically or electrically. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.

The specific structure is shown in fig. 1-5.

The electric crane provided in this embodiment includes an upper vehicle body 100, a lower vehicle body 200, an arm support 300, a luffing mast 400, a central weight box 600, a rear weight box 500, and a battery pack 010. The upper vehicle body 100 is rotatably erected above the lower vehicle body 200, and the arm support 300, the variable amplitude mast 400 and the rear weight box 500 are sequentially arranged on the upper vehicle body 100; center weight box 600 is provided in lower vehicle body 200. The battery pack 010 is provided to the center weight box 600, and/or the rear weight box 500, and the battery pack 010 is used to supply the electric power for the operation of the electric crane.

With the above-described structure, during the operation of the electric crane, the battery pack 010 located in the center weight box 600 and the rear weight box 500, or the battery pack 010 located in the center weight box 600, or the battery pack 010 located in the rear weight box 500 can supply the electric power for the electric crane to travel, can supply the electric power required for the lifting of the electric crane, and can also supply the electric power required for the rotation of the upper body 100 of the electric crane with respect to the lower body 200. The central weight box 600 is disposed on the lower body 200 for lowering the center of gravity of the entire electric crane, so that the electric crane is more stable in the lifting and traveling processes and prevented from toppling. The rear weight box 500, the variable amplitude mast 400 and the arm support 300 are sequentially arranged, so that the rear weight box 500 is positioned on one side of the variable amplitude mast 400 departing from the arm support 300, the rear weight box 500 can balance the moment of a heavy object at the position of the upper vehicle body 100 when the electric crane works in a hoisting process, and the problem that the electric crane topples towards the arm support 300 due to overlarge moment caused by the heavy object in the hoisting process of the electric crane is solved.

In the above configuration, if the battery pack 010 is only provided in the center weight box 600, the weight of the battery pack 010 satisfies both the counterweight function of the center weight box 600 and the supply of the operating power of the entire electric crane. If the battery pack 010 is only disposed in the rear weight box 500, the weight of the battery pack 010 satisfies both the weight balancing function of the rear weight box 500 and the supply of the working power of the whole electric crane. If the battery pack 010 is split into two groups and respectively arranged in the rear weight box 500 and the central weight box 600, the counterweight effect of the rear weight box 500 and the central weight box 600 can be met, and the working power supply of the whole electric crane can be met. The central weight box 600 and/or the rear weight box 500 are/is used for bearing the battery pack 010, and firstly, the whole space of the electric crane occupied by the battery pack 010 is reduced, so that the layout is more reasonable; secondly, reduce complete machine weight, utilize battery pack 010 weight to act as the counter weight, avoid the waste of battery pack 010 weight, alleviateed electric crane's complete machine weight. Therefore, the technical problems that the electric crane is heavy and occupies a large area due to the fact that the battery of the electric crane occupies a large space and has a large weight in the prior art are solved.

It should be noted that the voltage and the electric quantity of the battery pack 010 are calculated according to the working condition of the tool, so that the serial-parallel connection condition of the battery pack 010 is determined, the battery pack 010 is reasonably distributed, the battery pack 010 can be separately distributed and located in the rear weight box 500 or separately distributed in the central weight box 600, and the battery pack 010 can also be reasonably distributed and loaded in the rear weight box 500 and the central weight box 600 respectively.

In an optional technical solution of this embodiment, the center weight box 600 includes a first box body 610, the first box body 610 has a first accommodating cavity 611 for accommodating the battery pack 010 and the weight block, and the first box body 610 is further provided with a first mounting groove for fixing the battery pack 010.

Preferably, the first accommodating cavity 611 of the first box 610 can accommodate the battery pack 010 and the weight block, when a part of the batteries or all of the battery packs 010 in the battery pack 010 are disposed in the first accommodating cavity 611 of the center weight box 600, whether the battery pack 010 in the first accommodating cavity 611 can meet the weight demand can be analyzed according to the weight demand of the center weight box 600, and if the weight of the battery pack 010 is greater than or equal to the weight demand of the center weight box 600, no extra weight block needs to be filled in the first accommodating cavity 611; if the weight of the battery pack 010 in the first accommodating cavity 611 is smaller than the weight of the counterweight needed at the position of the center weight box 600, the counterweight needs to be filled in the first accommodating cavity 611, so that the counterweight and the weight of the battery pack 010 can meet the counterweight requirement at the position of the center weight box 600.

Preferably, a first mounting groove is opened in the center weight box 600, and the first mounting groove is located at the wall of the first accommodating cavity 611, the battery pack 010 is disposed in the first mounting groove, and the battery pack 010 is fixedly connected to the first mounting groove by clamping or using a fastening member.

Preferably, the battery pack 010 may be assembled in a single body by being externally pre-assembled, and the single battery pack 010 is mounted in the first mounting groove of the first receiving chamber 611 in such a manner that the battery pack 010 is externally mounted to the center weight box 600, thereby facilitating the assembly of the battery pack 010 by an operator.

In addition, the battery pack 010 may be connected in series and parallel by placing the single batteries in the battery pack 010 one by one in the first mounting groove and fixing them.

Preferably, the central weight box 600 is provided with a position avoiding hole or a position avoiding window for avoiding the positive and negative electrode harnesses and the communication harness. Or connectors may be installed on center weight box 600 to connect the positive and negative pole harnesses and the communication harness.

In an alternative embodiment of this embodiment, the center weight box 600 further includes a first cover 620 connected to the first box 610, and the first cover 620 can open and close the first receiving chamber 611.

Preferably, the first case 610 is a rectangular parallelepiped case structure having an opening at an upper end, the opening communicating with the first receiving chamber 611, and the first cover 620 can open or close the opening.

Preferably, the first cover 620 is detachably coupled with the first case 610 by a fastener, and when the first cover 620 is coupled to the first case 610, the first cover 620 closes the first receiving chamber 611. When the first cover 620 is separated from the first case 610, the first cover 620 opens the first receiving chamber 611, and at this time, the operator can perform maintenance replacement of the battery pack 010.

In addition, the first cover 620 can be further connected to the first casing 610 by a hinge, and the first cover 620 can open and close the first receiving chamber 611 by rotating around the hinge.

In the optional technical solution of this embodiment, the rear weight box 500 includes a second box body 510, the second box body 510 has a second accommodating cavity 511 for accommodating the battery pack 010 and the weight block, and the second box body 510 is further provided with a second mounting groove for fixing the battery pack 010.

Preferably, the second accommodating cavity 511 of the second box 510 can accommodate the battery pack 010 and the weight block, when a part of the batteries or all the battery packs 010 in the battery pack 010 are disposed in the second accommodating cavity 511 of the rear weight box 500, whether the battery pack 010 in the second accommodating cavity 511 can meet the weight demand can be analyzed according to the weight demand of the rear weight box 500, and if the weight of the battery pack 010 is greater than or equal to the weight of the weight required at the position of the rear weight box 500, no extra weight block needs to be filled in the second accommodating cavity 511; if the weight of the battery pack 010 in the second accommodating cavity 511 is smaller than the weight of the counterweight needed at the position of the rear weight box 500, the counterweight needs to be filled in the second accommodating cavity 511, so that the counterweight and the weight of the battery pack 010 can meet the counterweight requirement at the position of the rear weight box 500.

Preferably, the second mounting groove is opened in the rear weight box 500, and the second mounting groove is located on the wall of the second accommodating chamber 511, the battery pack 010 is disposed in the second mounting groove, and the battery pack 010 is fixedly connected to the second mounting groove by clamping or using a fastening member.

Preferably, the battery pack 010 may be assembled in a single body by being externally pre-assembled, and the single battery pack 010 is mounted in the second mounting groove of the second receiving chamber 511 in such a manner that the battery pack 010 is externally mounted in the rear weight box 500, thereby facilitating the assembly of the battery pack 010 by an operator.

In addition, the battery pack 010 may be connected in series and parallel by placing the single batteries in the battery pack 010 one by one in the second mounting groove and fixing them.

Preferably, the rear weight box 500 is provided with a position avoiding hole or a position avoiding window for avoiding the positive and negative electrode harnesses and the communication harness. Or a connector is installed on the rear weight box 500 to connect the positive and negative electrode harnesses and the communication harness.

In an alternative embodiment, the rear weight box 500 includes a second cover 520 connected to the second box 510, and the second cover 520 can open and close the second receiving chamber 511.

Preferably, the second case 510 is a rectangular parallelepiped case structure having an opening at an upper end, the opening communicating with the second receiving chamber 511, and the second cover 520 can open or close the opening.

Preferably, the second cover 520 is detachably coupled to the second case 510 by a fastener, and when the second cover 520 is coupled to the second case 510, the second cover 520 closes the second receiving chamber 511. When the second cover 520 is separated from the second case 510, the second cover 520 opens the second receiving chamber 511, and at this time, the operator can perform maintenance replacement on the battery pack 010.

In addition, the second cover 520 can be connected to the second housing 510 by a hinge, and the second cover 520 can be opened and closed by rotating around the hinge, so that the second receiving chamber 511 can be opened and closed.

In an optional technical solution of this embodiment, the boom 300 is rotatably connected to the upper vehicle body 100, the two variable-amplitude pulling plates 900 are connected to the tail end of the boom 300 and the tail end of the variable-amplitude mast 400, the two variable-amplitude pulling plates 900 are connected to the movable pulleys, and the boom 300 can be driven to rotate by increasing and decreasing the distance between the movable pulleys.

The embodiment further provides a super-lift electric crane, which comprises a super-lift device and the electric crane, wherein the super-lift device is arranged on the upper vehicle body 100.

The hoisting weight of the boom 300 can be enlarged by using the super-lift device, and the hoisting range of the boom 300 can be enlarged. In addition, the advantages of the super-lift electric crane, including the advantages of the electric crane, are not repeated.

In an optional technical solution of this embodiment, the superlift apparatus includes a superlift mast 700 and a superlift weight box 800, the superlift mast 700 is disposed between the boom 300 and the luffing mast 400, and the superlift weight box 800 is suspended at a distal end of the superlift mast 700.

The super lift weight box 800 can also house a battery pack 010.

Preferably, the super-lift mast 700 is arranged between the arm support 300 and the luffing mast 400, the tail end of the super-lift mast 700 is connected with the tail end of the arm support 300, the super-lift weight box 800 is hung at the tail end of the super-lift mast 700, when the arm support 300 lifts a heavy object, the arm support 300 is subjected to downward pulling force, so that moment occurs at the joint of the arm support 300 and the upper vehicle body 100, and by connecting the super-lift mast 700 with the arm support 300, the arm support 300 is subjected to the pulling force of the super-lift mast 700, so that reverse moment is formed, the moment generated by a part of the heavy object is offset, and the bearing capacity and the lifting range of the arm support 300.

It should be noted that, the working principle of cooperation between the super-lift mast 700, the super-lift counterweight and the boom 300 can refer to the prior art.

Preferably, the super lift weight box 800 is also capable of loading the battery pack 010. One or more of the super lift weight box 800, center weight box 600, and rear weight box 500 can carry a portion of the battery pack 010 or the entire battery pack 010. That is, the battery pack 010 may be entirely loaded in any one of the super weight box 800, the center weight box 600, and the rear weight box 500, or the battery pack 010 may be loaded in at least two of the super weight box 800, the center weight box 600, and the rear weight box 500 in a plurality of portions.

Preferably, the super lift weight box 800 can also load the battery pack 010, so that the super lift weight box 800 can also provide a weight using the battery pack 010, thereby saving the volume of the super lift device itself and reasonably and effectively using the weight of the battery pack 010.

In the optional technical solution of this embodiment, the super-lift weight box 800 includes a third box body 810, the third box body 810 has a third accommodating cavity 811 for accommodating the battery pack 010 and the weight block, and the third box body 810 is further provided with a third mounting groove for fixing the battery pack 010.

Preferably, the third accommodating cavity 811 of the third box 810 can accommodate the battery pack 010 and the weight block, when a part of batteries or all of the battery packs 010 in the battery pack 010 are disposed in the third accommodating cavity 811 of the super-lift weight box 800, whether the battery pack 010 in the third accommodating cavity 811 can meet the weight demand can be analyzed according to the weight demand of the super-lift weight box 800, and if the weight of the battery pack 010 is greater than or equal to the weight demand of the super-lift weight box 800, the third accommodating cavity 811 does not need to be filled with redundant weight blocks; if the weight of the battery pack 010 in the third accommodating cavity 811 is smaller than the weight of the counterweight needed at the position of the super-lift counterweight box 800, the counterweight needs to be filled in the third accommodating cavity 811 again, so that the counterweight and the weight of the battery pack 010 can meet the counterweight requirement at the position of the super-lift counterweight box 800.

Preferably, the third mounting groove is opened in the super-lift weight box 800, and the third mounting groove is located the cavity wall of the third accommodating cavity 811, the battery pack 010 is disposed in the third mounting groove, and the battery pack 010 is fixedly connected to the third mounting groove by clamping or using a fastening member.

Preferably, the battery pack 010 may be assembled in a single body by being externally pre-assembled, and the single battery pack 010 is mounted in a third mounting groove of the third receiving chamber 811 in such a manner that the battery pack 010 is mounted on the outside of the super box 800, thereby facilitating the assembly of the battery pack 010 by an operator.

In addition, the battery pack 010 may be connected in series and parallel by placing the single batteries in the battery pack 010 one by one in the third mounting groove and fixing them.

Preferably, the super-lift counterweight box 800 is provided with a position avoiding hole or a position avoiding window for avoiding the positive and negative electrode wire harnesses and the communication wire harness. Or a connector is mounted on the super-lift weight box 800 to connect the positive and negative electrode harnesses and the communication harness.

In an optional solution of this embodiment, the super-lift weight box 800 further includes a third cover 820 connected to the third box 810, and the third cover 820 can open and close the third accommodating cavity 811.

Preferably, the second case 510 is a rectangular parallelepiped case structure having an opening at an upper end, the opening communicating with the second receiving chamber 511, and the second cover 520 can open or close the opening.

Preferably, the third cover 820 is detachably coupled with the third housing 810 by a fastener, and when the third cover 820 is coupled to the third housing 810, the third cover 820 closes the third receiving chamber 811. When the third cover 820 is separated from the third case 810, the third receiving chamber 811 is opened by the third cover 820, and at this time, the operator can maintain and replace the battery pack 010.

In addition, the third cover 820 can be connected to the third housing 810 by a hinge, and the third cover 820 can be opened and closed by rotating around the hinge, thereby opening and closing the third receiving cavity 811.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill 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; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.