Lifting and folding device of self-walking crane

Abstract

The utility model belongs to the technical field of crane equipment, and particularly relates to a lifting and folding device of a self-walking crane, which comprises a body, one side of the top of the body is rotatably connected with a rotating rod, the other side in the body is rotatably connected with a hydraulic push rod I, and the output end of the hydraulic push rod I is rotatably connected to one side of the outer wall of the rotating rod; a first telescopic rod is slidably connected into the rotating rod. A second telescopic rod is slidably connected into the first telescopic rod. A motor is fixedly connected into the rotating rod, a lead screw is fixedly connected to the output end of the motor, and the lead screw is in threaded connection to one end in the first telescopic rod; first racks are fixedly connected to the two sides of the interior of the rotating rod, gears are rotationally connected to the two sides of the first telescopic rod, the first racks are meshed with the gears, second racks are fixedly connected to the two sides of the outer wall of the second telescopic rod, the gears are meshed with the second racks, and a lifting assembly is arranged on the outer wall of the front end of the second telescopic rod.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the crane equipment technical field relates to a kind of lifting folding devices of self-propelled crane. BACKGROUND

[0002] Self-propelled crane is usually a kind of hoisting equipment that can move by itself without external support, which is usually used in various industrial and construction sites for handling and lifting heavy objects. Most self-propelled cranes are equipped with lifting folding mechanisms to better shrink and fold the equipment, so that the self-propelled crane can reduce the space occupation during transportation.

[0003] The patent with publication number CN207844925U discloses a free walking type small crane, which includes a chassis beam, a stand column and a lifting boom. The bottom of the chassis beam is installed with universal walking wheels, and the top is equipped with a ring-shaped counterweight. The hollow part of the ring-shaped counterweight is installed with a rotary assembly. The stand column is inserted into the rotary assembly, and the other end of the stand column is connected with the lifting boom. The inside of the lifting boom is provided with a luffing rope, which is connected with a luffing winch. The other end of the luffing rope is connected with a lifting hook through an electric hoist. The crane is moved to the place where work is needed by the universal walking wheels, and then the universal walking wheels are locked to perform hoisting operation. The electric hoist is responsible for lifting, the luffing winch controls the luffing of the electric hoist through the luffing rope, and the rotary assembly controls the rotation of the small crane within a 360-degree range. This application can conveniently solve the problem of transporting components and accessories in narrow spaces, improve construction efficiency, and save a lot of manpower, material resources and financial resources. However, the self-propelled crane in this application occupies too much space when moving or transporting, which makes it inconvenient to enter some narrow places, resulting in the lack of applicability. SUMMARY

[0004] To make up for the above shortcomings, the utility model provides a lifting folding device of self-propelled crane, which aims to improve the problem that the existing self-propelled crane occupies too much space when moving or transporting, making it inconvenient to enter some narrow places.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] The utility model provides a lifting folding device of self -walking crane, including car body, one side rotation connection has rotary lever on the top of car body, the other side rotation connection has hydraulic push rod no.

[0007] Further, the lifting assembly includes a lifting device and a lifting wheel, one side of the outer wall of the lifting device is fixedly connected to the outer wall of the second telescopic rod, and the lifting wheel is arranged at the bottom of the lifting device.

[0008] Further, the outer wall of the car body is rotatably connected with wheels on both sides.

[0009] Further, a rotating column is rotatably connected inside the car body, and a worm wheel is fixedly connected to the bottom of the rotating column.

[0010] Further, a double-head motor is fixedly connected inside the car body, a worm is fixedly connected to the output end of the double-head motor, and the worm is engaged with the worm wheel.

[0011] Further, a double-head motor is fixedly connected inside the car body, a worm is fixedly connected to the output end of the double-head motor, and the worm is horizontally arranged, and the worm is engaged with the worm wheel.

[0012] Further, an extension rod is fixedly connected to the top of the outer wall of the rotating column, the extension rod is horizontally arranged, and a vertically arranged supporting rod is fixedly connected to one side of the extension rod.

[0013] Further, a hydraulic push rod no. 2 is fixedly connected inside the supporting rod, and a base is fixedly connected to the output end of the hydraulic push rod no. 2.

[0014] Further, the base is slidably connected inside the supporting rod and is clamped into the supporting rod.

[0015] The utility model has the advantages of:

[0016] 1. In the utility model, the gear inside telescopic rod one can roll on rack one, drive the movement of rack two, make rack two drive telescopic rod two slide out of the inside of telescopic rod one, so that the telescopic folding of the mechanism is realized, the problem of too large space occupied by the self-walking crane when moving or transporting is solved, and the convenience of transportation of the crane is improved.

[0017] 2. In the utility model, the rotation of the two worm gears is controlled by the double-head motor, the worm wheel is driven to rotate, the rotating column is driven to rotate, and the extension rod extends out of the top of the vehicle body. The hydraulic push rod two controls the base to extend inside the support rod, so that the crane operation is more stable, the problem of instability of the self-walking crane when operating is solved, and the stability of the crane operation is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a main body structure schematic view of the lifting and folding device of the self-walking crane of the utility model.

[0019] Figure 2 It is a rotating rod internal structure schematic view of the lifting and folding device of the self-walking crane of the utility model.

[0020] Figure 3 It is a vehicle body internal structure schematic view of the lifting and folding device of the self-walking crane of the utility model.

[0021] Figure 4 It is a support rod internal structure schematic view of the lifting and folding device of the self-walking crane of the utility model.

[0022] In the drawing: 1, vehicle body; 2, wheel; 3, rotating rod; 4, hydraulic push rod one; 5, lifting device; 6, lifting wheel; 7, support rod; 8, telescopic rod one; 9, telescopic rod two; 10, screw rod; 11, rack one; 12, gear; 13, rack two; 14, motor; 15, worm; 16, worm wheel; 17, rotating column; 18, extension rod; 19, double-head motor; 20, hydraulic push rod two; 21, base. DETAILED DESCRIPTION

[0023] The specific implementation manner of the utility model is further illustrated below in combination with the drawings and technical solutions.

[0024] Reference Figure 1 With Figure 2The utility model provides an embodiment: a lifting folding device of self -walking crane, car body 1 one side rotation connection has rotary rod 3 in the top of car body 1, another side rotation connection has hydraulic push rod one 4 in the inside of car body 1, and the output end of hydraulic push rod one 4 is rotationally connected on the one side of the outer wall of rotary rod 3, and the inside of rotary rod 3 is slidably connected with telescopic link one 8, and the inside of telescopic link one 8 is slidably connected with telescopic link two 9, the inside fixed connection of rotary rod 3 has motor 14, and the output end fixed connection of motor 14 has lead screw 10, and the inside one end of lead screw 10 is threadedly connected with telescopic link one 8, both sides fixed connection of rotary rod 3 inside have rack one 11, and both sides rotation connection of telescopic link one 8 have gear 12, and rack one 11 is engaged with gear 12, and both sides fixed connection of the outer wall of telescopic link two 9 have rack two 13, and gear 12 is engaged with rack two 13,

[0025] Specifically, when the telescopic of the crane needs to be controlled, the hydraulic push rod one 4 will push the rotation of the rotary rod 3 in a specific way, and this rotation enables the rotary rod 3 to be raised or lowered, thereby changing the height and position of the crane. Inside the rotary rod 3, a motor 14 is provided, which can drive the rotation of the lead screw 10. The rotation of the lead screw 10 will cause the telescopic link one 8 to slide out of the inside of the rotary rod 3. This sliding action enables the crane to expand or contract, thereby adapting to different work requirements. Furthermore, the gear 12 inside the telescopic link one 8 will roll on the rack one 11. This rolling action will cause the movement of the rack two 13, which in turn will cause the telescopic link two 9 to slide out of the inside of the telescopic link one 8. This design enables the crane to have higher stability and accuracy during the telescopic process. Through the coordinated work of these components, the self-walking crane can realize the telescopic folding function. This function enables the crane to be more flexible and efficient when performing tasks, and also greatly improves its adaptability and practicality.

[0026] Referring to Figure 1 The outer wall of the telescopic link two 9 is provided with a lifting assembly, which includes a lifting device 5 and a lifting wheel 6. The outer wall of the lifting device 5 is fixedly connected to the outer wall of the telescopic link two 9. The lifting wheel 6 is arranged at the bottom of the lifting device 5. The outer walls of the two sides of the car body 1 are rotationally connected with wheels 2.

[0027] Specifically, the lifting device 5 is arranged at the top of the telescopic link two 9. The lifting device 5 can control the lifting and lowering of the lifting wheel 6 to facilitate the operation of the crane. The car body 1 is provided with multiple wheels 2, which can effectively support the crane and drive it to move.

[0028] Referring to Figure 3 and Figure 4, four rotating columns 17 are rotatably connected inside the vehicle body 1, the four rotating columns 17 are symmetrically arranged and located on both sides of the rotating rod 3 and the hydraulic push rod one 4, the bottom of the rotating column 17 is fixedly connected with the worm wheel 16, the vehicle body 1 is fixedly connected with the double-head motor 19, the output end of the double-head motor 19 is fixedly connected with the worm 15, the worm 15 is horizontally arranged, the worm 15 is meshed with the worm wheel 16, the outer wall top of the rotating column 17 is fixedly connected with the extension rod 18, one side of the extension rod 18 is fixedly connected with the supporting rod 7, the supporting rod 7 is fixedly connected with the hydraulic push rod two 20 inside, the output end of the hydraulic push rod two 20 is fixedly connected with the base 21, the base 21 is slidingly connected inside the supporting rod 7 and is clamped into the supporting rod 7;

[0029] Specifically, when the crane is working, the two side worms 15 start to rotate under the control of the double-head motor 19. The rotation of the worm 15 drives the rotation of the worm wheel 16, further driving the rotation of the rotating column 17. With the rotation of the rotating column 17, the extension rod 18 gradually extends out of the top of the vehicle body 1. At this time, the hydraulic push rod two 20 starts to work, which controls the base 21 to extend out of the supporting rod 7, providing stable support for the crane. This design makes the crane more stable during operation, and can cope with various complex environments and conditions. The design of the double-head motor 19 and the transmission system of the worm 15, worm wheel 16, rotating column 17, etc. enables the crane to achieve precise positioning and stable operation. At the same time, the design of the hydraulic push rod two 20 and the base 21, supporting rod 7, etc. provides strong support and stability for the crane, ensuring the safety and efficiency of the operation. In addition, this crane also has high flexibility and adaptability. By adjusting the speed of the double-head motor 19 and the pressure of the hydraulic push rod two 20, precise control of the lifted heavy object can be achieved. At the same time, the compact structure and easy operation of the crane can adapt to various working environments and conditions.

[0030] Working principle: when the self-propelled crane is extended, the hydraulic push rod one 4 can be controlled to control the rotation of the rotating rod 3, so that the rotating rod 3 can be raised and lowered. An electric motor 14 is arranged inside the rotating rod 3, which can drive the rotation of the lead screw 10, thereby driving the extension rod one 8 to slide out of the rotating rod 3. At the same time, the gear 12 inside the extension rod one 8 will roll on the rack one 11, thereby driving the movement of the rack two 13, so that the rack two 13 drives the extension rod two 9 to slide out of the inside of the extension rod one 8, thereby realizing the extension and folding of the mechanism. When the crane is working, the two side worms 15 can be rotated by the double-head motor 19, thereby driving the rotation of the worm wheel 16, and then driving the rotation of the rotating column 17, so that the extension rod 18 extends out of the top of the vehicle body 1. Then the base 21 can be controlled by the hydraulic push rod two 20 to extend out of the supporting rod 7, thereby making the crane work more stably.

Claims

1. A lifting and folding device for a self-propelled crane, comprising a vehicle body (1), characterized in that: A rotating rod (3) is rotatably connected to one side of the top of the vehicle body (1), and a hydraulic push rod (4) is rotatably connected to the other side of the interior of the vehicle body (1). The output end of the hydraulic push rod (4) is rotatably connected to one side of the outer wall of the rotating rod (3). A telescopic rod (8) is slidably connected inside the rotating rod (3), and a telescopic rod (9) is slidably connected inside the telescopic rod (8). A motor (14) is fixedly connected inside the rotating rod (3), and a lead screw (10) is fixedly connected to the output end of the motor (14). The lead screw (10) is threaded to one end inside the telescopic rod (8); the rotating rod (3) is fixedly connected to both sides of the inside of the rotating rod (3), and the telescopic rod (8) is rotatably connected to both sides of the rotating rod (8). The rack (11) meshes with the gear (12). The telescopic rod (9) is fixedly connected to both sides of the outer wall of the telescopic rod (9). The gear (12) meshes with the rack (13). A lifting assembly is provided on the outer wall of the front end of the telescopic rod (9).

2. The lifting and folding device for a self-propelled crane according to claim 1, characterized in that: The lifting assembly includes a lifting device (5) and a lifting wheel (6). One side of the outer wall of the lifting device (5) is fixedly connected to the outer wall of the telescopic rod (9), and the lifting wheel (6) is located at the bottom of the lifting device (5).

3. The lifting and folding device for a self-propelled crane according to claim 1, characterized in that: Wheels (2) are rotatably connected to the outer walls on both sides of the vehicle body (1).

4. The lifting and folding device for a self-propelled crane according to claim 1, characterized in that: The vehicle body (1) is rotatably connected to four rotating columns (17). The four rotating columns (17) are symmetrically arranged and located on both sides of the rotating rod (3) and the hydraulic push rod (4). The bottom of the rotating column (17) is fixedly connected to a worm gear (16).

5. The lifting and folding device for a self-propelled crane according to claim 4, characterized in that: A dual-head motor (19) is fixedly connected inside the vehicle body (1). A worm gear (15) is fixedly connected to the output end of the dual-head motor (19). The worm gear (15) is arranged horizontally and meshes with the worm wheel (16).

6. The lifting and folding device for a self-propelled crane according to claim 5, characterized in that: An extension rod (18) is fixedly connected to the top of the outer wall of the rotating column (17). The extension rod (18) is arranged horizontally, and a vertically arranged support rod (7) is fixedly connected to one side of the extension rod (18).

7. The lifting and folding device for a self-propelled crane according to claim 6, characterized in that: The support rod (7) is internally fixedly connected to a hydraulic push rod (20), and the output end of the hydraulic push rod (20) is fixedly connected to a base (21).

8. The lifting and folding device for a self-propelled crane according to claim 7, characterized in that: The base (21) is slidably connected inside the support rod (7) and is snapped into the support rod (7).

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