CN113582096A

CN113582096A - Overhead working truck

Info

Publication number: CN113582096A
Application number: CN202110862235.1A
Authority: CN
Inventors: 马洪锋; 赵健; 李雪玲
Original assignee: Jiangsu Xugong Construction Machinery Research Institute Co ltd
Current assignee: Jiangsu Xugong Construction Machinery Research Institute Co ltd
Priority date: 2021-07-29
Filing date: 2021-07-29
Publication date: 2021-11-02
Also published as: WO2022156184A1; EP4095084A4; EP4095084A1

Abstract

The invention relates to an aerial work platform, which comprises a vehicle body (10), a first support leg (20), a second support leg (30) and a driving device (40), wherein the first support leg (20) and the second support leg (30) are respectively and rotatably connected with the vehicle body (10), the driving device (40) is movably mounted on the vehicle body (10), and the driving device (40) is connected between the first support leg (20) and the second support leg (30) and is used for driving the first support leg (20) and the second support leg (30) to be unfolded towards two sides or retracted towards the middle relative to the center line of the vehicle body (10). The invention can effectively reduce the weight of the supporting leg and improve the adaptability of the supporting leg to different working conditions.

Description

Overhead working truck

Technical Field

The invention relates to the technical field of engineering machinery, in particular to an overhead working truck.

Background

An overhead working truck (called high-altitude truck for short) is a special engineering vehicle for transporting workers and working equipment to a specified height for operation. The supporting legs of the overhead working truck are key parts for leveling and ensuring the stability of the whole truck.

At present, in the related technology, four support legs of an overhead working truck adopt telescopic support legs with two sections of arms, the overall weight of the support legs is large, and the problems of local crushing and instability of the arm body are easy to occur; moreover, the landing leg is a fixed landing leg, and the adaptability to the working condition is poor.

It is noted that the information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.

Disclosure of Invention

The embodiment of the invention provides an overhead working truck, which can effectively reduce the weight of a supporting leg.

According to one aspect of the present invention there is provided an aerial work platform comprising:

a vehicle body;

the first supporting leg and the second supporting leg are respectively and rotatably connected with the vehicle body; and

and the driving device is connected between the first leg and the second leg and is used for driving the first leg and the second leg to be unfolded towards two sides or retracted towards the middle relative to the middle line of the vehicle body.

In some embodiments, the aerial working platform further comprises a support rod mounted on the platform body, the driving device comprises a driving body, the driving body is provided with a mounting hole, and the driving body is slidably mounted on the support rod through the mounting hole.

In some embodiments, the aerial lift truck further comprises a bearing disposed between the mounting hole of the drive body and the support rod.

In some embodiments, the drive device includes a cylinder and first and second piston rods disposed within the cylinder and extending from opposite ends of the cylinder, respectively, the first piston rod being rotatably connected to the first leg and the second piston rod being rotatably connected to the second leg.

In some embodiments, the aerial working platform further comprises a first connecting shaft, a first lug plate and a second lug plate, the first lug plate and the second lug plate are arranged on the side surfaces of the first supporting leg, the first lug plate is provided with a first connecting hole, the second lug plate is provided with a second connecting hole, the first piston rod is provided with a third connecting hole, and the first connecting shaft penetrates through the first connecting hole, the third connecting hole and the second connecting hole to connect the first piston rod and the first supporting leg.

In some embodiments, the aerial working platform further comprises a second connecting shaft, and a third lug plate and a fourth lug plate which are arranged on the side surfaces of the second support leg, the third lug plate is provided with a third connecting hole, the fourth lug plate is provided with a fourth connecting hole, the second piston rod is provided with a fifth connecting hole, and the second connecting shaft penetrates through the third connecting hole, the fifth connecting hole and the fourth connecting hole to connect the second piston rod and the second support leg.

In some embodiments, the driving device is configured to drive the first leg and the second leg to spread to both sides by a preset angle with respect to a center line of the vehicle body, the preset angle being 0 to 90 °.

In some embodiments, the drive arrangement is configured to retract the first leg and the second leg to a position parallel to a centerline of the vehicle body.

In some embodiments, the first leg includes a first end proximate the body and a second end distal from the body, the first end having a cross-sectional area greater than a cross-sectional area of the second end.

In some embodiments, the cross-sectional area of the first leg decreases from the first end to the second end.

In some embodiments, the aerial work platform further comprises a third leg and a fourth leg, the first leg and the second leg are both disposed on the rear side of the vehicle body, the third leg and the fourth leg are both disposed on the front side of the vehicle body, and the third leg and the fourth leg each comprise a telescopic leg structure.

In some embodiments, the aerial platform further comprises a toolbox, a get-off control box and a cab, wherein the toolbox and the get-off control box are both arranged on one side of the first supporting leg and one side of the second supporting leg close to the cab.

Based on the technical scheme, in the embodiment of the invention, the first support leg and the second support leg swing relative to the vehicle body through the driving device so as to achieve the purpose that the first support leg and the second support leg are unfolded towards two sides of the vehicle body or retracted towards the middle, and the swing structure does not need to be provided with two telescopic arms, so that the weight of the support legs can be greatly reduced, and the problems of crushing and instability of the support legs are reduced; and the size of expansion angle can be adjusted according to the operating mode needs to the oscillating landing leg, adapts to the demand of operating mode better, improves the adaptability of landing leg, and the security is also better.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

fig. 1 is a schematic structural diagram of one embodiment of the aerial work platform of the invention.

Figure 2 is a top plan view of the first leg and second leg in a retracted position in accordance with one embodiment of the aerial work platform of the present invention.

Figure 3 is a top plan view of the first leg and second leg in an extended position for an aerial work platform according to an embodiment of the present invention.

Figure 4 is a front view of the first leg of one embodiment of the aerial lift truck of the present invention.

Figure 5 is a top plan view of the first leg of one embodiment of the aerial lift truck of the present invention.

Figure 6 is a top plan view of the drive assembly of one embodiment of the aerial lift truck of the present invention.

Figure 7 is a side view of the drive assembly of one embodiment of the aerial lift truck of the present invention.

FIG. 8 is a schematic structural view of a third leg of an embodiment of an aerial work platform of the present invention.

In the figure:

10. a vehicle body; 20. a first leg; 21. a first leg portion; 22. a second leg portion; 23. a first ear plate; 24. a second ear panel; 30. a second leg; 40. a drive device; 41. a cylinder body; 42. a first piston rod; 43. a second piston rod; 44. a first rod chamber; 45. a second rod chamber; 46. a rodless cavity; 50. a support bar; 51. a first support base; 52. a second support seat; 60. a third leg; 61. a fifth leg portion; 611. a movable leg; 612. fixing the supporting legs; 62. a sixth leg portion; 70. a fourth leg; 80. a tool box; 90. a get-off control box; 100. a cab; 110. a turntable; 120. an operation platform; 130. a telescopic arm.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "central," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the scope of the invention.

As shown in fig. 1 to 3, in some embodiments of the present invention, there is provided an aerial work vehicle comprising a vehicle body 10, a first leg 20, a second leg 30, and a driving device 40, the first leg 20 and the second leg 30 being rotatably connected to the vehicle body 10, respectively, the driving device 40 being movably mounted on the vehicle body 10, the driving device 40 being connected between the first leg 20 and the second leg 30 and being configured to drive the first leg 20 and the second leg 30 to be deployed to both sides or retracted to the middle with respect to a center line of the vehicle body 10.

In the above embodiment, the first leg 20 and the second leg 30 are swung relative to the vehicle body 10 by the driving device 40 to achieve the purpose that the first leg 20 and the second leg 30 are extended to the two sides of the vehicle body 10 or retracted to the middle, and the swinging structure does not need to be provided with two telescopic arms, so that the weight of the legs can be greatly reduced, and the problems of crushing and instability of the legs can be reduced; and the size of expansion angle can be adjusted according to the operating mode needs to the oscillating landing leg, adapts to the demand of operating mode better, improves the adaptability of landing leg, and the security is also better.

In addition, in the embodiment of the present invention, the driving device drives the first leg 20 and the second leg 30 to move simultaneously, that is, the first leg 20 and the second leg 30 are driven by the same driving device, rather than being driven by separate driving devices, so that the number of driving devices can be reduced, thereby saving the cost and being beneficial to reducing the total weight of the working vehicle.

Moreover, the first leg 20 and the second leg 30 are extended or retracted by the driving of the driving device, so that the extension and retraction in the horizontal direction are not required, a horizontal oil cylinder is not required, and a fixed leg box and a movable leg extending out relative to the fixed leg box are not required, so that the total weight of the legs can be greatly reduced, and the overall weight of the aerial work platform can be further reduced. Without the fixed leg box, some space is left for the vehicle body 10, optimizing the arrangement of the various components on the vehicle body 10.

As shown in fig. 2, in the non-operating state, the first leg 20 and the second leg 30 are in the retracted state, and the first leg 20 and the second leg 30 are retracted in a direction parallel to the center line of the vehicle body 10 and parallel to the traveling direction of the vehicle body 10, so that the first leg 20 and the second leg 30 do not interfere with other objects to avoid collision when the vehicle body 10 travels.

As shown in fig. 3, the first leg 20 and the second leg 30 are rotated away from each other by the driving device 40, so that the first leg 20 and the second leg 30 are unfolded to both sides with respect to the center line of the vehicle body 10, the first leg 20 and the second leg 30 are unfolded to a predetermined angle according to the size of the work place of the aerial work vehicle, the first leg 20 and the second leg 30 are brought into the unfolded state (also the working state), and the first leg 20 and the second leg 30 can stably support the vehicle body 10. At this time, the loading work of the aerial work platform vehicle may be started, and after the loading work is completed, the first leg 20 and the second leg 30 may be rotated in a direction to approach each other by the driving device 40, so that the first leg 20 and the second leg 30 are retracted toward the middle with respect to the center line of the vehicle body 10, until the first leg 20 and the second leg 30 are retracted to a position where the center lines of the first leg 20 and the second leg 30 and the vehicle body 10 are parallel to each other, that is, to an initial state.

In some embodiments, the driving device 40 is configured to drive the first and

second legs

20 and 30 to be spread to both sides by a predetermined angle with respect to a center line of the vehicle body 10, the predetermined angle being 0 to 90 °.

In the related art, the supporting leg adopts a fixed supporting leg structure, the unfolding angle of the supporting leg is also fixed, and the supporting leg cannot be adaptively adjusted according to the requirements of actual working conditions. In the embodiment of the present invention, the driving device 40 is controlled to maintain the first leg 20 and the second leg 30 at the preset spreading angle to meet the requirements of different working conditions. For example, when the field is narrow or uneven, the first leg 20 and the second leg 30 may be unfolded to a proper angle according to specific needs, and the unfolding angle ranges from 0 ° to 90 °, such as 10 °, 20 °, 30 °, 40 °, 50 °, 60 °, 70 °, or 80 °.

In some embodiments, the drive device 40 is configured to retract the first and

second legs

20, 30 to a position parallel to the centerline of the vehicle body 10. The position can effectively ensure that the first supporting leg 20 and the second supporting leg 30 do not interfere or collide with other objects in the moving process of the vehicle body 10, and the walking safety of the vehicle body is improved.

In some embodiments, the first leg 20 includes a first end proximate the vehicle body 10 and a second end distal from the vehicle body 10, the first end having a larger cross-sectional area than the second end. I.e. the first end is thicker and the second end is thinner. Set up like this and can increase the structural strength who is close to the first end of automobile body 10, the cross-section moment of inertia of the first end of increase first leg 20 greatly promotes first leg 20's bearing capacity, simultaneously, under the prerequisite that satisfies the structural strength requirement, can also alleviate the total weight of first leg 20 as far as possible.

In some embodiments, the cross-sectional area of the first leg 20 decreases from the first end to the second end.

As shown in fig. 4, the first leg 20 includes a first leg portion 21 and a second leg portion 22, the first leg portion 21 being rotatably connected to the vehicle body 10, the second leg portion 22 being connected to the first leg portion 21, the second leg portion 22 being for support on the ground. The cross-sectional area of the first leg portion 21 gradually decreases from the first end to the second end.

The second leg portion 22 is of a telescopic leg structure, after the first leg 20 is unfolded to a preset angle, the inner leg of the second leg portion 22 extends out relative to the outer leg, and the support leg at the end portion of the inner leg is supported on the ground, so that stable support is achieved.

The second leg 30 may or may not be identical in construction to the first leg 20.

For example, the second leg 30 includes a third leg portion rotatably connected to the vehicle body 10 and a fourth leg portion connected to the third support portion and supported on the ground. The cross-sectional area of the third leg portion decreases from the first end to the second end.

The fourth leg portion adopts telescopic leg structure, and after the second leg 30 was expanded to preset angle, the inner leg of the fourth leg portion stretched out for outer leg, and the stabilizer blade of inner leg tip supported in subaerial, realized firm support.

In some embodiments, the aerial lift truck further comprises a support rod 50 mounted on the truck body 10, and the drive device 40 comprises a drive body provided with a mounting hole through which the drive body is slidably mounted on the support rod 50.

By providing the support rod 50, the driving device 40 can be supported, and the driving device 40 can slide along the extending direction of the support rod 50, so as to avoid the driving device 40 from deflecting during the process of driving the first leg 20 and the second leg 30 to swing.

The extending direction of the support bar 50 is parallel to the direction of the center line of the vehicle body 10, so that the driving device 40 can move in the direction parallel to the center line of the vehicle body 10 during the process of driving the first leg 20 and the second leg 30 to swing, so as to adapt to the displacement of the first leg 20 and the second leg 30 in the direction parallel to the center line of the vehicle body 10 during the swing process, and prevent the connecting part of the driving device 40 and the first leg 20 and the second leg 30 from being broken due to the tensile force.

In addition, the supporting rod 50 can prevent the driving device 40 from displacing in the direction perpendicular to the supporting rod 50, so that the driving device 40 is prevented from deflecting, the swinging of the first supporting leg 20 and the second supporting leg 30 can be kept synchronous, and the control precision of the unfolding angle is improved.

In some embodiments, the aerial lift truck further comprises a bearing disposed between the mounting hole of the drive body and the support rod 50. By arranging the bearing between the mounting hole of the driving body and the supporting rod 50, the relative movement between the driving device 40 and the supporting rod 50 can be smoother, the occurrence of serious abrasion between the driving device 40 or the supporting rod 50 is avoided, and the service life of the driving device 40 and the supporting rod 50 is effectively prolonged.

The bearings may be linear sliding bearings so that the driving unit 40 can smoothly slide with respect to the support rod 50.

As shown in fig. 6, a first end of the support rod 50 is mounted on the vehicle body 10 through a first support seat 51, and a second end of the support rod 50 is mounted on the vehicle body 10 through a second support seat 52. The support bar 50 remains fixed relative to the vehicle body 10.

As shown in fig. 7, the lower side of the driving body of the driving device 40 is provided with a mounting block, the mounting block is provided with a mounting hole, a bearing is mounted in the mounting hole, and the support rod 50 is inserted into an inner hole of the bearing.

The driving device 40 may be an oil cylinder, an air cylinder, or a motor.

In some embodiments, the driving device 40 includes a cylinder 41 (i.e., a driving body), and a first piston rod 42 and a second piston rod 43 disposed in the cylinder 41 and respectively extending from both ends of the cylinder 41, the first piston rod 42 being rotatably connected to the first leg 20, and the second piston rod 43 being rotatably connected to the second leg 30.

The inner space of the cylinder 41 is partitioned into a first rod chamber 44, a second rod chamber 45, and a rodless chamber 46 by the first piston rod 42 and the first piston rod 42, and the rodless chamber 46 is located between the first rod chamber 44 and the second rod chamber 45. When the first rod chamber 44 and the second rod chamber 45 are connected to the high pressure end and the rodless chamber 46 is connected to the low pressure end, the first piston rod 42 and the first piston rod 42 retract to drive the first leg 20 and the second leg 30 to return to the retracted position; when the first rod chamber 44 and the second rod chamber 45 are connected to the low pressure side and the rodless chamber 46 is connected to the high pressure side, the first piston rod 42 and the first piston rod 42 are extended to expand the first leg 20 and the second leg 30.

In some embodiments, the aerial working platform further comprises a first connecting shaft, a first ear plate 23 and a second ear plate 24 which are arranged on the side of the first leg 20, the first ear plate 23 is provided with a first connecting hole, the second ear plate 24 is provided with a second connecting hole, the first piston rod 42 is provided with a third connecting hole, and the first connecting shaft passes through the first connecting hole, the third connecting hole and the second connecting hole to connect the first piston rod 42 and the first leg 20.

As shown in fig. 4 and 5, by providing the first lug plate 23 and the second lug plate 24, the reliability of the connection of the first piston rod 42 to the first leg 20 can be improved.

In some embodiments, the aerial work platform further includes a second connecting shaft, and a third ear plate and a fourth ear plate disposed at the side of the second leg 30, the third ear plate is provided with a third connecting hole, the fourth ear plate is provided with a fourth connecting hole, the second piston rod 43 is provided with a fifth connecting hole, and the second connecting shaft passes through the third connecting hole, the fifth connecting hole and the fourth connecting hole to connect the second piston rod 43 and the second leg 30.

By providing the third and fourth lug plates, the reliability of the connection between the second piston rod 43 and the second leg 30 can be improved.

In some embodiments, the aerial lift truck further comprises a third leg 60 and a fourth leg 70, the first leg 20 and the second leg 30 are both disposed on a rear side of the truck body 10, the third leg 60 and the fourth leg 70 are both disposed on a front side of the truck body 10, and the third leg 60 and the fourth leg 70 each comprise a telescoping leg structure.

In the embodiment shown in fig. 2 and 3, the third leg 60 and the fourth leg 70 are respectively located on the front left and right sides of the vehicle body 10, the first leg 20 and the second leg 30 are respectively located on the rear left and right sides of the vehicle body 10, and the four legs extend in the left front, right front, left rear, and right rear directions of the vehicle body 10, respectively, to achieve relatively stable support of the vehicle body 10.

The third leg 60 and the fourth leg 70 are both of a telescoping leg construction.

As shown in fig. 8, the third leg 60 includes a fifth leg 61 and a sixth leg 62, the fifth leg 61 is connected to the vehicle body 10, and the sixth leg 62 is connected to the fifth leg 61 and supported on the ground. The fifth leg portion 61 includes a movable leg 611 and a fixed leg 612, the fixed leg 612 is fixedly connected to the vehicle body 10, the fixed leg 612 has a box-type structure, the fixed leg 612 has an inner cavity, the movable leg 611 is inserted into the inner cavity of the fixed leg 612, and the movable leg 611 can extend or retract relative to the fixed leg 612. When the movable leg 611 is extended, the fifth leg 61 is in the unfolded state; when the movable leg 611 is retracted, the fifth leg portion 61 is in a retracted state.

The sixth leg portion 62 also adopts a telescopic leg structure, after the fifth leg portion 61 is unfolded, the inner leg of the sixth leg portion 62 extends out relative to the outer leg, and the support leg at the end portion of the inner leg is supported on the ground, so that stable support is realized.

In the embodiment shown in fig. 2 and 3, the fourth leg 70 has the same structure as the third leg 60. That is, first landing leg 20 and second landing leg 30 all adopt the oscillating landing leg structure, and third landing leg 60 and fourth landing leg 70 all adopt telescopic landing leg structure, can reduce the institutional transformation to current high altitude construction car front end like this, improve the adaptability of operation car to the operating mode through the institutional transformation to the rear side, alleviate the total weight of automobile body simultaneously to satisfy the requirement of getting on the road of operation car.

In some embodiments, the aerial lift truck further comprises a tool box 80, a get-off control box 90, and a cab 100, wherein the tool box 80 and the get-off control box 90 are disposed on the sides of the first leg 20 and the second leg 30 adjacent to the cab 100.

The tool box 80 and the alighting control box 90 are disposed in front of the first leg 20 and the second leg 30, so that the first leg 20 and the second leg 30 are prevented from interfering with the tool box 80 and the alighting control box 90 during the unfolding process.

In some embodiments of the present invention, the tool box 80 may be disposed in front of the first leg 20, and the alighting control box 90 may be disposed in front of the second leg 30. Of course, in other embodiments, the tool box 80 may be disposed forward of the second leg 30 and the drop-off control box 90 may be disposed forward of the first leg 20.

The tool box 80 can house a number of common tools, such as wrenches, pliers, screws, etc. An electric control element and the like may be provided in the lower vehicle control box 90.

On the automobile body 10 of high altitude construction car, all adopt the structure of telescopic landing leg based on four original landing legs, will be located two landing legs of rear side and reform transform into the oscillating landing leg, can improve the adaptability to the operating mode, alleviate the weight of landing leg, also can not cause great change to automobile body 10 simultaneously, with toolbox 80 and the control box 90 antedisplacement of getting off, can optimize structural arrangement, can also avoid taking place to interfere with the landing leg.

Moreover, the inventor of the present invention has found through research that, on the aerial work platform, the vehicle body 10 is provided with the rotary table 110, the telescopic arm 130 of the upper vehicle is mounted on the rotary table 110, so that the telescopic arm 130 has a preset distance from the upper surface of the vehicle body 10, thereby allowing the driving device 40 to be arranged between the first leg 20 and the second leg 30, and the arrangement of the driving device 40 does not affect the arrangement of other components on the vehicle body 10, so that one driving device replaces two driving devices for respectively driving the two legs, thereby making full use of the advantages of the structural arrangement on the aerial work platform, ensuring the swinging synchronization of the two legs, saving the cost, and reducing the total weight of the aerial work platform.

The telescopic arm 130 includes a multi-section arm, and the telescopic arm 130 can be extended or shortened to transport the work platform 120 connected to the head of the telescopic arm 130 to a predetermined height for work.

The embodiment of the invention adopts a swing type supporting leg structure with only a single-section arm by modifying the structure of two supporting legs at the rear part, and utilizes a driving device to simultaneously drive the two supporting legs to swing, and the supporting legs also adopt a variable cross section design, so that the improvement measures are favorable for reducing the overall weight of the operation vehicle, realizing the light weight design and achieving the purposes of energy conservation and emission reduction; meanwhile, the weight requirement of the operation vehicle on the urban road can be met; in addition, on the premise of equal total weight, the weight of the vehicle body is reduced, the weight of the vehicle can be properly increased, the total length during the vehicle-loading operation is increased, and the reachable height of the vehicle is improved.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made without departing from the principles of the invention, and these modifications and equivalents are intended to be included within the scope of the claims.

Claims

1. An aerial lift truck, comprising:

a vehicle body (10);

a first leg (20) and a second leg (30) which are respectively rotatably connected with the vehicle body (10); and

a driving device (40) movably mounted on the vehicle body (10), the driving device (40) being connected between the first leg (20) and the second leg (30) and used for driving the first leg (20) and the second leg (30) to be unfolded towards two sides or retracted towards the middle relative to the middle line of the vehicle body (10).

2. The aerial lift platform of claim 1, further comprising a support bar (50) mounted on the vehicle body (10), the drive device (40) including a drive body having a mounting hole through which the drive body is slidably mounted on the support bar (50).

3. The aerial lift truck of claim 2, further comprising a bearing disposed between the mounting hole of the drive body and the support rod (50).

4. The aerial lift truck of claim 1, wherein the drive device (40) comprises a cylinder (41) and a first piston rod (42) and a second piston rod (43) disposed within the cylinder (41) and extending from each end of the cylinder (41), the first piston rod (42) being rotatably connected to the first leg (20) and the second piston rod (43) being rotatably connected to the second leg (30).

5. The aerial work platform as claimed in claim 4, further comprising a first connecting shaft, a first lug plate (23) and a second lug plate (24) disposed at the side of the first leg (20), the first lug plate (23) being provided with a first connecting hole, the second lug plate (24) being provided with a second connecting hole, the first piston rod (42) being provided with a third connecting hole, the first connecting shaft passing through the first connecting hole, the third connecting hole and the second connecting hole to connect the first piston rod (42) and the first leg (20).

6. The aerial work platform as claimed in claim 4, further comprising a second connecting shaft, a third lug plate and a fourth lug plate arranged on the side of the second support leg (30), wherein the third lug plate is provided with a third connecting hole, the fourth lug plate is provided with a fourth connecting hole, the second piston rod (43) is provided with a fifth connecting hole, and the second connecting shaft penetrates through the third connecting hole, the fifth connecting hole and the fourth connecting hole to connect the second piston rod (43) and the second support leg (30).

7. The aerial lift truck according to claim 1, characterized in that the drive device (40) is configured to drive the first leg (20) and the second leg (30) to spread out to both sides by a preset angle with respect to a center line of the truck body (10), the preset angle being 0-90 °.

8. The aerial lift truck of claim 1 wherein the drive means (40) is configured to retract the first leg (20) and the second leg (30) to a position parallel to a centerline of the truck body (10).

9. The aerial lift truck of claim 1 wherein the first leg (20) includes a first end proximate the truck body (10) and a second end distal from the truck body (10), the first end having a cross-sectional area greater than a cross-sectional area of the second end.

10. The aerial lift truck of claim 9 wherein the cross-sectional area of the first leg (20) decreases from the first end to the second end.

11. The aerial work platform as claimed in any one of claims 1 to 10, further comprising a third leg (60) and a fourth leg (70), wherein the first leg (20) and the second leg (30) are both disposed on a rear side of the vehicle body (10), the third leg (60) and the fourth leg (70) are both disposed on a front side of the vehicle body (10), and the third leg (60) and the fourth leg (70) each comprise a telescopic leg structure.

12. The aerial lift truck as claimed in any one of claims 1 to 10, further comprising a tool box (80), a get-off control box (90) and a cab (100), wherein the tool box (80) and the get-off control box (90) are both arranged on the sides of the first leg (20) and the second leg (30) close to the cab (100).