阅读说明：本技术 烟箱自动卸货装置 (Automatic unloading device for smoke box ) 是由 张登健 董现春 罗玲玲 于 2021-09-07 设计创作，主要内容包括：本发明公开的烟箱自动卸货装置,包括小车、安装在小车上的第一输送机构和第二输送机构,所述第一输送机构位于第二输送机构后方,小车上设有驱动第二输送机构摆动的驱动机构,第二输送机构前方设有保证烟箱码垛整齐的推送机构。烟箱堆垛时,通过第一输送机构将烟箱输送到第二输送机构上,驱动机构驱动第二输送机构摆动,使得推送机构的高度提升到对应的高度,实现烟箱的自动堆垛,降低了劳动强度。(The invention discloses an automatic unloading device for cigarette boxes, which comprises a trolley, and a first conveying mechanism and a second conveying mechanism which are arranged on the trolley, wherein the first conveying mechanism is positioned behind the second conveying mechanism, the trolley is provided with a driving mechanism for driving the second conveying mechanism to swing, and a pushing mechanism for ensuring the cigarette boxes to be neatly stacked is arranged in front of the second conveying mechanism. During the smoke box stack, carry the second conveying mechanism with the smoke box through first conveying mechanism on, actuating mechanism drive second conveying mechanism swings for pushing mechanism's height promotes to the height that corresponds, realizes the automatic stack of smoke box, has reduced intensity of labour.)

1. The automatic unloading device for the smoke boxes is characterized by comprising a trolley (1), a first conveying mechanism and a second conveying mechanism, wherein the first conveying mechanism and the second conveying mechanism are installed on the trolley (1), the first conveying mechanism is located behind the second conveying mechanism, a driving mechanism for driving the second conveying mechanism to swing is arranged on the trolley (1), and a pushing mechanism for ensuring the smoke boxes to be stacked neatly is arranged in front of the second conveying mechanism.

2. The automatic smoke box unloading device according to claim 1, wherein the first conveying mechanism comprises a first conveyor belt (2), the trolley (1) is provided with a first bracket (3), the first bracket (3) is fixed on the trolley (1), and the first conveyor belt (2) is arranged at the upper end of the first bracket (3) and runs in the first bracket (3).

3. The automatic cigarette box unloading device according to claim 1, wherein the second conveying mechanism comprises a second conveying belt (4) and a second support (5) for supporting the second conveying belt (4), the second conveying belt (4) is installed in the second support (5) and runs in the second support (5), a support frame (7) is arranged at the rear end of the second support (5), the upper end of the support frame (7) is rotatably connected with the second support (5), and the lower end of the support frame (7) is rotatably connected with the trolley (1);

the driving mechanism comprises a first hydraulic cylinder (6), the cylinder body end of the first hydraulic cylinder (6) is hinged with the trolley (1), and the piston rod end of the first hydraulic cylinder (6) is hinged with the second support (5).

4. The automatic cigarette box unloading device according to claim 3, wherein the trolley (1) is provided with a guide plate (8) for guiding the swing track of the second support (5), the guide plate (8) is provided with a guide hole (9), one end of the outer side of the second support (5) is provided with a first guide wheel (10), and the first guide wheel (10) is matched with the guide hole (9).

5. The automatic cigarette box unloading device according to claim 1, wherein the pushing mechanism comprises a third support (12), a third conveyer belt (13) for conveying the cigarette boxes forwards is symmetrically arranged in the third support (12), a moving plate (14) is arranged in the third support (12), a driving mechanism for driving the moving plate (14) to move back and forth is arranged in the third support (12), a lifting frame (15) is arranged on the moving plate (14), guide rails (16) for guiding the moving track of the moving plate (14) are arranged on two sides of the third support (12), a sucking disc (17) is arranged on the lifting frame (15), and a positioning mechanism for positioning the left and right positions of the cigarette boxes is arranged at the front end of the third support (12).

6. The automatic cigarette box discharging device according to claim 5, wherein the front end of the second support (5) is rotatably connected to the rear end of the third support (12), the front end of the second support (5) is provided with a second hydraulic cylinder (26), the lower end of the third support (12) is provided with a swing rod (27), the upper end of the swing rod (27) is fixedly connected to the third support (12), the cylinder body end of the second hydraulic cylinder (26) is hinged to the second support (5), and the piston rod end of the second hydraulic cylinder (26) is hinged to the lower end of the swing rod (27).

7. The automatic cigarette box unloading device according to claim 5, wherein the driving mechanism is driven by a screw nut, a guide rod (19) for guiding the moving plate (14) to move is arranged in the third bracket (12), two ends of the guide rod (19) are fixed on the inner wall of the third bracket (12), and the guide rod (19) penetrates through the moving plate (14) and is connected with the moving plate (14) in a sliding manner.

8. The automatic cigarette box unloading device according to claim 5, wherein the moving plate (14) is provided with a through hole, the lower end surface of the lifting frame (15) is provided with a lifting rod (20), and the lower end of the lifting rod (20) extends into the through hole and is in sliding connection with the through hole;

the guide rail (16) comprises an inclined part in the middle and horizontal parts at two ends of the inclined part, and the inclined part is inclined upwards from back to front;

second guide wheels (21) are arranged at two ends of the lifting frame (15), the second guide wheels (21) are symmetrically distributed up and down, grooves are formed in the cylindrical surface of the second guide wheels (21), the grooves of the upper second guide wheels (21) and the grooves of the lower second guide wheels (21) are spliced into a circle, and the guide rails (16) penetrate through the grooves and are spliced into a circle.

9. An automatic cigarette box unloading device according to claim 5, wherein the positioning mechanism comprises a push plate (22) for beating the side of the cigarette box, and a cylinder (23) mounted at the front end of the third bracket (12) and driving the push plate (22) to move, the front end of the left side of the third bracket (12) is provided with a mounting frame (24), the cylinder body end of the cylinder (23) is fixed on the mounting frame (24), and the piston rod end of the cylinder (23) is connected with the push plate (22).

10. The automatic cigarette box unloading device according to claim 1, wherein the front end of the trolley (1) is provided with a supporting leg (25), the trolley (1) is provided with a mounting seat (28), the supporting leg (25) is rotatably connected with the mounting seat (28), a third hydraulic cylinder (29) for driving the supporting leg (25) to rotate is arranged between the mounting seat (28) and the supporting leg (25), the cylinder body end of the third hydraulic cylinder (29) is hinged with the mounting seat (28), and the piston rod end of the third hydraulic cylinder (29) is hinged with the supporting leg (25).

Technical Field

The invention relates to the technical field of cigarette box stacking, in particular to an automatic cigarette box unloading device.

Background

The automatic logistics system is the core of modern logistics technology, is a model combining mechanical and electronic technologies, and comprises logistics equipment and a computer management and control system with certain intelligence. When the cigarettes are produced, finished cigarettes produced by each cigarette making machine set are conveyed to a workshop centralized box packing area through a cigarette carton conveying line, and are packed into boxes through a box packing machine.

However, most of the existing smoke boxes are loaded, unloaded and stored by a forklift, the time and labor are wasted when the smoke boxes are unloaded and transported, and meanwhile, the neatness after stacking is poor, and the smoke boxes are easy to scatter.

Disclosure of Invention

The invention aims to solve the problems and provides an automatic unloading device for cigarette boxes, which can realize automatic stacking of the cigarette boxes and ensure that the cigarette boxes are stacked orderly.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the automatic cigarette box unloading device comprises a trolley, a first conveying mechanism and a second conveying mechanism, wherein the first conveying mechanism and the second conveying mechanism are installed on the trolley, the first conveying mechanism is located behind the second conveying mechanism, a driving mechanism for driving the second conveying mechanism to swing is arranged on the trolley, and a pushing mechanism for ensuring the cigarette boxes to be stacked neatly is arranged in front of the second conveying mechanism.

Furthermore, the first conveying mechanism comprises a first conveying belt, a first support is arranged on the trolley and fixed on the trolley, and the first conveying belt is installed at the upper end of the first support and runs in the first support.

Furthermore, the second conveying mechanism comprises a second conveying belt and a second support for supporting the second conveying belt, the second conveying belt is installed in the second support and runs in the second support, a support frame is arranged at the rear end of the second support, the upper end of the support frame is rotatably connected with the second support, and the lower end of the support frame is rotatably connected with the trolley;

the driving mechanism comprises a first hydraulic cylinder, the end of the cylinder body of the first hydraulic cylinder is hinged with the trolley, and the end of the piston rod of the first hydraulic cylinder is hinged with the second support.

Furthermore, a guide plate for guiding the swing track of the second support is arranged on the trolley, a guide hole is formed in the guide plate, a first guide wheel is arranged at one end of the outer side of the second support, and the first guide wheel is matched with the guide hole.

Furthermore, the pushing mechanism comprises a third support, third conveying belts for conveying the smoke box forwards are symmetrically arranged in the third support, a moving plate is arranged in the third support, a driving mechanism for driving the moving plate to move back and forth is arranged in the third support, a lifting frame is arranged on the moving plate, guide rails for guiding the moving track of the moving plate are arranged on two sides of the third support, a sucking disc is arranged on the lifting frame, and a positioning mechanism for positioning the left position and the right position of the smoke box is arranged at the front end of the third support.

Furthermore, the front end of the second support is rotatably connected with the rear end of the third support, a second hydraulic cylinder is arranged at the front end of the second support, a swing rod is arranged at the lower end of the third support, the upper end of the swing rod is fixedly connected with the third support, the cylinder body end of the second hydraulic cylinder is hinged with the second support, and the piston rod end of the second hydraulic cylinder is hinged with the lower end of the swing rod.

Furthermore, the driving mechanism adopts a screw nut driving mode, a guide rod for guiding the moving plate to move is arranged in the third support, two ends of the guide rod are fixed on the inner wall of the third support, and the guide rod penetrates through the moving plate and is in sliding connection with the moving plate.

Furthermore, a through hole is formed in the moving plate, a lifting rod is arranged on the lower end face of the lifting frame, and the lower end of the lifting rod extends into the through hole and is in sliding connection with the through hole;

the guide rail comprises an inclined part in the middle and horizontal parts at two ends of the inclined part, and the inclined part is inclined upwards from back to front;

the two ends of the lifting frame are provided with second guide wheels which are vertically and symmetrically distributed, grooves are formed in the cylindrical surfaces of the second guide wheels, the grooves of the upper and lower second guide wheels are spliced into a circle, and the guide rails penetrate through the grooves and are spliced into a circle.

Further, positioning mechanism is including the push pedal that is used for patting the smoke box side, installing at the cylinder of third support front end drive push pedal action, third support left surface front end is equipped with the mounting bracket, cylinder body end is fixed on the mounting bracket, and cylinder tailpiece of the piston rod end is connected with the push pedal.

Furthermore, the front end of the trolley is provided with a supporting leg, the trolley is provided with a mounting seat, the supporting leg is rotatably connected with the mounting seat, a third hydraulic cylinder for driving the supporting leg to rotate is arranged between the mounting seat and the supporting leg, the cylinder body end of the third hydraulic cylinder is hinged with the mounting seat, and the piston rod end of the third hydraulic cylinder is hinged with the supporting leg.

The invention has the beneficial effects that:

1. the invention is provided with a trolley, a first conveying mechanism and a second conveying mechanism, wherein the first conveying mechanism and the second conveying mechanism are arranged on the trolley, the first conveying mechanism is positioned behind the second conveying mechanism, and the trolley is provided with a driving mechanism for driving the second conveying mechanism to swing. During the smoke box stack, carry the second conveying mechanism with the smoke box through first conveying mechanism on, actuating mechanism drive second conveying mechanism swings for pushing mechanism's height promotes to the height that corresponds, realizes the automatic stack of smoke box, has reduced intensity of labour.

2. In the stacking process, the trolley moves along with the trolley, so that the stacking is conveniently carried out at different positions, and the operation is convenient.

3. According to the invention, the pushing mechanism for ensuring the orderly stacking of the cigarette boxes is arranged in front of the second conveying mechanism, and the pushing mechanism can realize the positioning of the front, back, left and right positions of the stacked cigarette boxes, so that the cigarette stacks are ensured to be orderly and not to scatter.

4. According to the invention, the guide plate for guiding the swing track of the second support is arranged on the trolley, the guide hole is formed in the guide plate, the first guide wheel is arranged at one end of the outer side of the second support, the first guide wheel is matched with the guide hole, the first hydraulic cylinder drives the second conveying belt to swing, the guide hole guides the front track and the rear track of the second support in the swing process of the second conveying belt, the support frame swings along with the guide wheel, the front position and the rear position of the front end of the second support are fixed, the front track and the rear track correspond to the stacking position of the cigarette boxes all the time, the stacking operation is convenient, and meanwhile, the pushing mechanism is convenient to position the cigarette stacks orderly.

5. The cigarette box positioning device comprises a third support, a moving plate is arranged in the third support, a lifting frame is arranged on the moving plate, guide rails for guiding the moving track of the moving plate are arranged on two sides of the third support, a first push plate is arranged on the lifting frame, and a positioning mechanism for positioning the left position and the right position of a cigarette box is arranged at the front end of the third support. Be equipped with the inductive switch who is used for responding to the smoke box position in the third support, the smoke box is through the time, movable plate and crane antedisplacement, the elevator can rise under the effect of guide rail for first push pedal rises from the third support, and first push pedal pushes away the smoke box forward, and when first push pedal location smoke box front and back position, positioning mechanism on the crane promotes the smoke box side, realizes the location of position about the smoke box, makes the smoke box after the stack more neat, can not scatter in disorder.

6. The positioning mechanism comprises a second push plate used for beating the side face of the smoke box and a cylinder installed at the front end of the third support and used for driving the second push plate to move, the lifting frame moves forwards along with the moving plate, the first push plate pushes the smoke box forwards from the rear side, and after the front position and the rear position of the smoke box are positioned, the cylinder drives the second push plate to push the smoke box from the side face, so that the left position and the right position of the smoke box are aligned, and the smoke box after stacking is guaranteed to be tidy.

Drawings

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

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a schematic structural diagram of a pushing mechanism according to the present invention;

fig. 4 is a schematic structural diagram of the moving plate and the lifting frame.

In the figure: the device comprises a trolley 1, a first conveying belt 2, a first support 3, a second conveying belt 4, a second support 5, a first hydraulic cylinder 6, a support frame 7, a guide plate 8, a guide hole 9, a first guide wheel 10, a guide plate 11, a third support 12, a third conveying belt 13, a movable plate 14, a lifting frame 15, a guide rail 16, a suction cup 17, a lead screw 18, a guide rod 19, a lifting rod 20, a second guide wheel 21, a push plate 22, a cylinder 23, a mounting frame 24, a support leg 25, a second hydraulic cylinder 26 and a swing rod 27.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. 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.

For convenience of description, a coordinate system is now defined as shown in fig. 1.

As shown in fig. 1, the automatic cigarette box unloading device comprises a trolley 1, and a first conveying mechanism and a second conveying mechanism which are installed on the trolley 1, wherein the first conveying mechanism is located behind the second conveying mechanism, a driving mechanism for driving the second conveying mechanism to swing is arranged on the trolley 1, and a pushing mechanism for ensuring the cigarette boxes to be neatly stacked is arranged in front of the second conveying mechanism.

During the smoke box stack, carry the second conveying mechanism with the smoke box through first conveying mechanism on, actuating mechanism drive second conveying mechanism swings for pushing mechanism's height promotes to the height that corresponds, realizes the automatic stack of smoke box, has reduced intensity of labour. In the stacking process, the trolley 1 moves along with the trolley, so that stacking can be conveniently carried out at different positions, and the operation is convenient. Meanwhile, the pushing mechanism can position the stacked smoke boxes front, back, left and right, and ensure that the smoke stacks are tidy and cannot scatter.

As shown in fig. 1, the first conveying mechanism includes a first conveying belt 2, a first support 3 is arranged on the trolley 1, the first support 3 is fixed on the trolley 1 through a support leg, the first conveying belt 2 is installed at the upper end of the first support 3 and runs in the first support 3, and a motor for driving the first conveying belt 2 to run is arranged at the upper end of the first support 3.

As shown in fig. 1 and 2, the second conveying mechanism includes a second conveying belt 4 and a second support 5 for supporting the second conveying belt 4, the second conveying belt 4 is installed in the second support 5 and runs in the second support 5, a support frame 7 is arranged at the rear end of the second support 5, the upper end of the support frame 7 is rotatably connected with the second support 5, the lower end of the support frame 7 is rotatably connected with the trolley 1, the support frame 7 includes a middle cross bar and upright bars located at two ends of the cross bar, the two upright bars respectively correspond to two sides of the second support 5 and are rotatably connected with the second support, and the lower ends of the upright bars are rotatably connected with the trolley; the driving mechanism comprises a first hydraulic cylinder 6, the cylinder body end of the first hydraulic cylinder 6 is hinged with the trolley 1, the piston rod end of the first hydraulic cylinder 6 is hinged with the second support 5, and the first hydraulic cylinder 6 is symmetrically distributed on two sides of the second support 5.

As shown in fig. 1 and 2, the trolley 1 is provided with two guide plates 8 for guiding the swing track of the second support 5, the two guide plates 8 are symmetrically distributed on two sides of the second support 5, the guide plates 8 are provided with guide holes 9, one end of the outer side of the second support 5 is provided with a first guide wheel 10, the first guide wheel 10 is matched with the guide holes 9, the first guide wheel 10 rolls along the guide holes 9, and the guide holes 9 comprise arc-shaped holes which are located in the middle and protrude backwards and arc-shaped holes which are located in the upper end and the lower end and protrude forwards. Be equipped with deflector 11 on the second support 5, fix a position the smoke box through deflector 11, prevent that the smoke box from dropping.

As shown in fig. 1 and 2, the first hydraulic cylinder 6 drives the second conveying belt 4 to swing, in the swinging process of the second conveying belt 4, the guide holes 9 guide the front and back tracks of the second support 5 in the swinging process, and the support frame 7 swings along with the guide holes to ensure that the front and back positions of the front end of the second support 5 are fixed and always correspond to the position of a cigarette box stack, so that the pushing mechanism is convenient to position the cigarette stacks orderly.

As shown in fig. 3, the pushing mechanism includes a third support 12, the third support 12 is located at the end of the cigarette box conveying line, a third conveying belt 13 for conveying the cigarette box forward is symmetrically arranged in the third support 12, conveying wheels are arranged at two ends of the third conveying belt 13, the third conveying belt 13 is matched with the conveying wheels, the conveying wheels are supported on the inner wall of the third support 12 and are rotatably connected with the inner wall of the third support 12, the conveying wheels at two sides are connected through a connecting rod, a driving motor for driving the front connecting rod to rotate is arranged in the frame, the motor drives the conveying wheels to rotate, so as to drive the third conveying belt 13 to operate in the third support 12, a moving plate 14 is arranged in the third support 12, a driving mechanism for driving the moving plate 14 to move back and forth is arranged in the third support 12, a lifting frame 15 is arranged on the moving plate 14, guide rails 16 for guiding the moving track of the moving plate 14 are arranged at two sides of the third support 12, a suction cup 17 is arranged on the lifting frame 15, the sucking disc 17 bilateral symmetry is equipped with two in this embodiment, and sucking disc 17 goes up along being less than the conveying surface of conveyer belt when not carrying the smoke box, and the third support 12 front end is equipped with the positioning mechanism of location smoke box left and right sides position. During the stack smoke box, carry the smoke box on the frame through crossing the transfer chain, the conveyer belt on the frame continues to carry the smoke box forward, be equipped with the inductive switch who is used for responding to the smoke box position in the frame, 14 antedisplacement of actuating mechanism drive movable plate, 14 antedisplacement in-process of movable plate, crane 15 antedisplacement along with, crane 15 can shift up under guide rail 16's effect, make first push pedal rise from the frame, 14 continuation antedisplacement of movable plate, first push pedal pushes away the smoke box forward, when first push pedal location smoke box front and back position, positioning mechanism on the crane promotes the smoke box side, realize the location of position about the smoke box, make the smoke box after the stack more neat, can not scatter in disorder. After the cigarette case piles up the completion, the movable plate is withdrawed, and under the effect of guide rail, the crane descends, and first push pedal is hidden, can not interfere the transport of next cigarette case.

As shown in fig. 2, the front end of the second bracket 5 is rotatably connected with the rear end of the third bracket 12 through a pin, the front end of the second bracket 5 is provided with a second hydraulic cylinder 26, the lower end of the third bracket 12 is provided with a swing rod 27, the upper end of the swing rod 27 is fixedly connected with the third bracket 12, the end of the cylinder body of the second hydraulic cylinder 26 is hinged with the second bracket 5, the piston rod end of the second hydraulic cylinder 26 is hinged with the lower end of the swing rod 27, the second hydraulic cylinder 26 can drive the third bracket 12 to swing, and the third bracket can swing along with the swing of the second bracket, so that the third bracket is always in a horizontal state, and the smoke box can be conveniently swung.

As shown in fig. 3, the driving mechanism is driven by a screw nut, a sprocket chain or a belt, a motor for driving the screw to rotate is arranged in the frame, two ends of the screw are rotatably connected with an inner wall of the frame, the screw 18 passes through the moving plate 14 and is in threaded connection with the moving plate 14, the driving mode by the screw 18 nut is the prior art, and details are not repeated herein, a guide rod 19 for guiding the moving plate 14 to move is arranged in the third bracket 12, two ends of the guide rod 19 are fixed on the inner wall of the third bracket 12, the guide rods 19 are symmetrically distributed at two sides of the screw 18, the axial direction of the guide rod 19 is horizontal to the axial direction of the screw 18, and the guide rod 19 passes through the moving plate 14 and is slidably connected with the moving plate 14. When the induction switch induces the smoke box to pass through, the motor drives the screw rod to rotate, the movable plate 14 moves back and forth along the guide rod 19 under the action of the screw nut, and at the moment, the front and back alignment of the stacked smoke box is realized under the action of the suction disc 17.

As shown in fig. 3 and 4, a through hole is formed in the moving plate 14, a lifting rod 20 is arranged on the lower end surface of the lifting frame 15, the lower end of the lifting rod 20 extends into the through hole and is slidably connected with the through hole through a linear bearing, and two through holes and two lifting rods 20 are respectively arranged in the embodiment and are symmetrically distributed. The guide rail 16 includes an inclined portion at the middle and horizontal portions at both ends of the inclined portion, the inclined portion being inclined upward from the rear to the front. The two ends of the lifting frame 15 are provided with second guide wheels 21, the second guide wheels 21 are distributed in an up-down symmetrical mode, grooves are formed in the cylindrical surfaces of the second guide wheels 21, the grooves of the upper second guide wheels 21 and the grooves of the lower second guide wheels 21 are spliced into a circle, the grooves are matched with the guide rails 16, and the guide rails 16 penetrate through the grooves and are spliced into a circle. When the lifting frame 15 moves forwards, the guide wheel is matched with the guide rail 16, and the lifting rod 20 is lifted under the action of the inclined part.

As shown in fig. 3, the positioning mechanism includes a push plate 22 for flapping the side of the smoke box, and an air cylinder 23 installed at the front end of the third support 12 for driving the push plate 22 to move, an installation frame 24 is provided at the front end of the left side of the third support 12, the cylinder body end of the air cylinder 23 is fixed on the installation frame 24, and the piston rod end of the air cylinder 23 is connected with the push plate 22. The crane moves forward along with the movable plate, the first push plate pushes the smoke box forwards from the rear, and after the front position and the rear position of the smoke box are located, the cylinder drives the push plate 22 to push the smoke box from the side surface, so that the left position and the right position of the smoke box are aligned, and the smoke box after stacking is guaranteed to be tidy.

As shown in fig. 1, a supporting leg 25 is arranged at the front end of the trolley 1, a mounting seat 28 is arranged on the trolley 1, the supporting leg 25 is rotatably connected with the mounting seat 28, a third hydraulic cylinder 29 for driving the supporting leg 25 to rotate is arranged between the mounting seat 28 and the supporting leg 25, the cylinder end of the third hydraulic cylinder 29 is hinged with the mounting seat 28, the piston rod end of the third hydraulic cylinder 29 is hinged with the supporting leg 25, and the third hydraulic cylinder 29 drives the supporting leg 25 to rotate, so that the supporting leg 25 is supported on the ground, and the trolley 1 is ensured to be more stable, safe and reliable.

In the description of the present invention, it should be noted that the terms "left", "right", "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

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