A mobile crane

Abstract

The utility model provides a kind of mobile crane, including base, mobile wheel group, support mechanism, stand, rotating mechanism and lifting device;The mobile wheel group is set in the bottom of the base;The support mechanism is set in the base, for and ground abut;The stand is fixed on the base along vertical direction;The rotating mechanism is rotatably mounted on the stand, and its rotating shaft is vertically arranged;The lifting device is set in the end of the rotating mechanism away from the stand. The utility model provides a kind of mobile crane, can be moved to different positions and rotate to specified angle to lift heavy object, realize the angle adjustment of lifting device, applicable to a variety of application scenarios.

Description

Technical Field

[0001] This utility model belongs to the field of crane device technology, and specifically relates to a mobile crane. Background Technology

[0002] In existing technologies, the base of the crane's support column is firmly fixed to the ground of the work site, which limits the crane to operating only in fixed locations, greatly restricting its working range. However, in practical applications, when moving heavy and valuable products such as elevator rails and testing equipment, it is not only necessary to move the heavy objects on flat ground, but also to lift them from the ground to higher floors. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings and deficiencies in the existing technology and provide a mobile crane that can be moved to different positions and rotated to a specified angle to lift heavy objects, realize the angle adjustment of the lifting device, and is suitable for a variety of application scenarios.

[0004] This utility model is achieved through the following technical solution:

[0005] A mobile crane includes a base, a set of moving wheels, a support mechanism, a column, a rotating mechanism, and a lifting device; the set of moving wheels is disposed at the bottom of the base; the support mechanism is disposed on the base for contacting the ground; the column is fixed vertically to the base; the rotating mechanism is rotatably mounted on the column, and its rotating shaft is vertically disposed; the lifting device is disposed at the end of the rotating mechanism away from the column.

[0006] This utility model provides a mobile crane. A set of movable wheels is disposed at the bottom of a base for moving the crane. A support mechanism is disposed on the base for contact with the ground, improving stability during lifting. A rotating mechanism is rotatably mounted on a column, with its shaft vertically positioned. A lifting device is disposed at the end of the rotating mechanism away from the column, and the rotation of the rotating mechanism drives the lifting device to rotate to different angles. The mobile crane provided by this utility model can be moved to different positions and rotated to a specified angle to lift heavy objects, achieving angle adjustment of the lifting device, and is suitable for various application scenarios.

[0007] Furthermore, the rotating mechanism includes a first mounting plate, a first rotating shaft, and a rotating frame; the first mounting plate is fixed to the column, and a first vertical mounting hole is provided through the first mounting plate; the first rotating shaft is rotatably and vertically mounted in the first vertical mounting hole; one end of the rotating frame is fixedly connected to the first rotating shaft, and the other end extends horizontally; the lifting device is located at the end of the rotating frame away from the mounting plate. The first mounting plate is fixed to the column, one end of the rotating frame is fixedly connected to the first rotating shaft, and the other end extends horizontally; the first rotating shaft is rotatably and vertically mounted in the first vertical mounting hole of the first mounting plate, allowing the rotating frame to rotate around the column; the lifting device is located at the end of the rotating frame away from the mounting plate and moves synchronously with the rotation of the rotating frame.

[0008] Furthermore, the rotating mechanism also includes a second mounting plate and a second rotating shaft; the rotating frame includes a rotating arm and a reinforcing rod; one end of the rotating arm is fixedly connected to the first rotating shaft, and the other end extends horizontally; the second mounting plate is fixed to the column, and the second mounting plate and the first mounting plate are located on the same vertical line; the second mounting plate is provided with a second vertical mounting hole corresponding to the position of the first vertical mounting hole; the second rotating shaft is rotatably and vertically mounted in the second vertical mounting hole; one end of the reinforcing rod is fixed to the rotating arm, and the other end is fixed to the second rotating shaft. One end of the rotating arm is fixedly connected to the first rotating shaft, and the other end extends horizontally, so that the rotating arm can rotate around the column; one end of the reinforcing rod is fixed to the rotating arm, and the other end is fixed to the second rotating shaft to enhance the installation strength of the rotating arm.

[0009] Furthermore, the lifting device includes a drum, a pull rope, and a driver. The drum is mounted on the end of the rotating frame away from the mounting plate. The pull rope is wound around the drum, and the driver drives the drum to rotate. The pull rope is used to connect to the heavy object to be lifted. The pull rope is wound around the drum, and the driver drives the drum to rotate to unwind or wind the pull rope, thereby lifting or lowering the heavy object.

[0010] Furthermore, the lifting device also includes a limit switch and a controller. The limit switch is disposed on the drum and electrically connected to the controller; the controller is electrically connected to the drive and controls the drive to run or stop. The limit switch, disposed on the drum and electrically connected to the controller, prevents the pull rope from causing excessive movement of the load.

[0011] Furthermore, the limit switch includes a limit rotation shaft and a contact plate. The limit rotation shaft is rotatably mounted on the drum and can rotate vertically. The contact plate is mounted on the limit rotation shaft and located below the pull rope wound on the drum. The limit rotation shaft is electrically connected to the controller. When the pull rope pulls a weight to contact the contact plate, further upward movement will cause the contact plate to rotate under the action of the limit rotation shaft. The limit rotation shaft is electrically connected to the controller, and the controller can control the driver to stop operating based on the rotation of the limit rotation shaft.

[0012] Furthermore, the support mechanism includes a support rod and a support leg. One end of the support rod is rotatably mounted horizontally to the edge of the base, and the support leg is movably disposed vertically at the other end of the support rod. The horizontal rotatability of the support rod to the edge of the base allows the support leg to rotate to a suitable angle to support the base. The vertical movability of the support leg to the other end of the support rod allows the support leg to extend to contact the ground or retract when the moving wheel assembly moves, thus avoiding interference with the movement of the moving wheel assembly.

[0013] Furthermore, the support rod is provided with a threaded vertical sleeve; the support foot includes a screw and a support end, the screw is installed in the vertical sleeve and threadedly connected to the vertical sleeve, and the support end is fixed to the end of the screw facing the ground; the height of the screw is higher than the height of the movable wheel assembly, and the screw can extend vertically out of the vertical sleeve so that the support end abuts against the ground. The screw is installed in the vertical sleeve and threadedly connected to the sleeve, so that the screw can extend vertically out of the vertical sleeve to abut against the ground, or retract vertically.

[0014] Furthermore, a handle is fixed to the end of the screw away from the support end, and the handle is located outside the vertical sleeve. The handle is provided for rotating the screw.

[0015] Furthermore, the number of support mechanisms is at least two, and the at least two support mechanisms are arranged opposite to each other on the base. The arrangement of at least two support mechanisms opposite to each other on the base provides balanced support force and improves the stability of the mobile crane.

[0016] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is the front view of the mobile crane.

[0018] Figure 2 This is a structural diagram of a mobile crane.

[0019] Figure 3 This is a schematic diagram of a rotating structure.

[0020] Figure 4 This is a structural diagram of the support mechanism. Detailed Implementation

[0021] The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the embodiments of the present invention, and not all of the structures.

[0022] Furthermore, the terms "first," "second," "third," etc., used in the specification and claims are only for the purpose of distinguishing the description of the same technical features and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated, nor necessarily the order of description or chronological sequence. Where appropriate, the terms are interchangeable. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.

[0023] Similarly, the terms "fixed" and "connected" are used in the specification and claims and should not be construed as limited to a direct connection. Therefore, the expression "device A is connected to device B" should not be limited to device A being directly connected to device B in a device or system; it means that there is a path between device A and device B, which can be a path that includes other devices or tools.

[0024] Example 1

[0025] This embodiment provides a mobile crane. Figure 1 This is the front view of the mobile crane. Figure 2 This is a structural diagram of a mobile crane. Please refer to it. Figure 1-2 The mobile crane includes a base 1, a set of moving wheels 2, a support mechanism 3, a column 4, a rotating mechanism 5, and a lifting device 6; the set of moving wheels 2 is located at the bottom of the base 1; the support mechanism 3 is located on the base 1 and is used to contact the ground; the column 4 is fixed to the base 1 in a vertical direction; the rotating mechanism 5 is rotatably mounted on the column 4, and its rotating shaft is set vertically; the lifting device 6 is located at the end of the rotating mechanism 5 away from the column 4.

[0026] This embodiment provides a mobile crane. A set of movable wheels 2 is located at the bottom of a base 1 to drive the mobile crane's movement. A support mechanism 3 is located on the base 1 to contact the ground, improving stability during lifting. A rotating mechanism 5 is rotatably mounted on a column 4, with its shaft vertically positioned. A lifting device 6 is located at the end of the rotating mechanism 5 away from the column 4. The rotation of the rotating mechanism 5 drives the lifting device 6 to rotate to different angles. The mobile crane provided by this invention can move to different positions and rotate to a specified angle to lift heavy objects, achieving angle adjustment of the lifting device 6, and is suitable for various application scenarios. When lifting a heavy object from flat ground to a high place, the mobile crane is located on a high floor. The rotating mechanism 5 rotates the lifting device 6 above the heavy object and connects it to the object. When the heavy object is lifted to the height of the high floor, the rotating mechanism 5 rotates horizontally, moving the heavy object horizontally into the high floor.

[0027] Figure 3 This is a schematic diagram of the rotating structure. Please refer to [link / reference]. Figure 2-3 In this embodiment, the rotating mechanism 5 includes a first mounting plate 51, a first rotating shaft 53, and a rotating frame 55. The first mounting plate 51 is fixed to the column 4, and a first vertical mounting hole is provided through the first mounting plate 51. The first rotating shaft 53 is rotatably and vertically mounted in the first vertical mounting hole. One end of the rotating frame 55 is fixedly connected to the first rotating shaft 53, and the other end extends horizontally. A lifting device 6 is disposed at the end of the rotating frame 55 away from the mounting plate. The first mounting plate 51 is fixed to the column 4, one end of the rotating frame 55 is fixedly connected to the first rotating shaft 53, and the other end extends horizontally. The first rotating shaft 53 is rotatably and vertically mounted in the first vertical mounting hole of the first mounting plate 51, so that the rotating frame 55 can rotate around the column 4. The lifting device 6 is disposed at the end of the rotating frame 55 away from the mounting plate and moves synchronously with the rotation of the rotating frame 55.

[0028] Please see Figure 2-3In this embodiment, the rotating mechanism 5 further includes a second mounting plate 52 and a second rotating shaft 54; the rotating frame 55 includes a rotating arm 551 and a reinforcing rod 552; one end of the rotating arm 551 is fixedly connected to the first rotating shaft 53, and the other end extends horizontally; the second mounting plate 52 is fixed to the column 4, and the second mounting plate 52 and the first mounting plate 51 are located on the same vertical line; the second mounting plate 52 is provided with a second vertical mounting hole corresponding to the position of the first vertical mounting hole; the second rotating shaft 54 ​​is rotatably and vertically mounted in the second vertical mounting hole; one end of the reinforcing rod 552 is fixed to the rotating arm 551, and the other end is fixed to the second rotating shaft 54. One end of the rotating arm 551 is fixedly connected to the first rotating shaft 53, and the other end extends horizontally, so that the rotating arm 551 can rotate around the column 4; one end of the reinforcing rod 552 is fixed to the rotating arm 551, and the other end is fixed to the second rotating shaft 54 ​​to enhance the installation strength of the rotating arm 551.

[0029] Please see Figure 1 In this embodiment, the lifting device 6 includes a drum 61, a pull rope 62, and a driver 63. The drum 61 is mounted on the end of the rotating frame 55 away from the mounting plate. The pull rope 62 is wound around the drum 61, and the driver 63 drives the drum 61 to rotate. The pull rope 62 is used to connect to the heavy object to be lifted. The pull rope 62 is wound around the drum 61, and the driver 63 drives the drum 61 to rotate, thereby releasing or winding the pull rope 62 to lift the heavy object. In one embodiment, the driver 63 is fixed to the rotating frame 55, and the output end of the driver 63 is driven to connect to the drum 61, driving the drum 61 to rotate to release or wind the pull rope 62. One end of the pull rope 62 is connected to a hook or lifting frame.

[0030] In this embodiment, the lifting device 6 further includes a limit switch and a controller. The limit switch is disposed on the drum 61 and electrically connected to the controller; the controller is electrically connected to the drive 63 and controls the drive 63 to run or stop. The limit switch, disposed on the drum 61 and electrically connected to the controller, prevents the pull rope 62 from causing excessive movement of the load.

[0031] In one embodiment, the limit switch 64 includes a limit rotation shaft (not shown) and a contact plate 641. The limit rotation shaft is rotatably mounted on the drum 61 and can rotate vertically. The contact plate 641 is mounted on the limit rotation shaft and located below the pull rope 62 wound on the drum 61. The limit rotation shaft is electrically connected to a controller (not shown). The limit rotation shaft is rotatably mounted on the drum 61, and the contact plate 641 is mounted on the limit rotation shaft and located below the pull rope 62 wound on the drum 61. When the pull rope 62 pulls a weight to contact the contact plate 641, further upward movement will cause the contact plate 641 to rotate under the action of the limit rotation shaft. The limit rotation shaft is electrically connected to the controller, and the controller can control the driver 63 to stop operating based on the rotation of the limit rotation shaft.

[0032] In another embodiment, the limit switch includes an infrared sensor switch, which is used to sense the position of the heavy object. When the heavy object is lifted to the specified limit position, the infrared sensor switch is triggered and sends a signal to the controller, which then controls the driver 63 to stop operating.

[0033] Figure 4 This is a structural diagram of the support mechanism; please refer to it. Figure 1 and 4 In this embodiment, the support mechanism 3 includes a support rod 31 and a support leg 32. One end of the support rod 31 is rotatably mounted horizontally on the edge of the base 1, and the support leg 32 is movably disposed vertically on the other end of the support rod 31. The horizontal rotatability of the support rod 31 on the edge of the base 1 allows the support leg 32 to rotate to a suitable angle to support the base 1. The vertical movability of the support leg 32 on the other end of the support rod 31 allows the support leg 32 to extend to contact the ground or retract when the movable wheel set 2 moves, thus avoiding interference with the movement of the movable wheel set 2.

[0034] Please see Figure 1 and 4 In this embodiment, the support rod 31 is provided with a threaded vertical sleeve 33; the support foot 32 includes a screw 321 and a support end 322. The screw 321 is installed in the vertical sleeve 33 and threadedly connected to the vertical sleeve 33, and the support end 322 is fixed to the end of the screw 321 facing the ground. The height of the screw 321 is higher than the height of the movable wheel assembly 2, and the screw 321 can extend vertically out of the vertical sleeve 33 so that the support end 322 abuts against the ground. The screw 321 is installed in the vertical sleeve 33 and threadedly connected to the sleeve 33, so that the screw 321 can extend vertically out of the vertical sleeve 33 to abut against the ground, or retract vertically.

[0035] Please see Figure 1 and 4 In this embodiment, a handle 323 is fixed to the end of the screw 321 away from the support end 322, and the handle 323 is located outside the vertical sleeve 33. The handle 323 is provided for rotating the screw 321.

[0036] In another embodiment, the support leg 32 includes a vertical fixing part and a vertical extension part. The vertical fixing tube is fixed to the support rod 31. The vertical fixing tube has a vertical receiving groove. The vertical extension part is telescopically installed in the vertical receiving groove. The vertical extension part can extend out of the vertical receiving groove until it touches the ground, or retract into the vertical receiving groove.

[0037] In this embodiment, the number of support mechanisms 3 is at least two, and the at least two support mechanisms 3 are arranged opposite to each other on the base 1. The at least two support mechanisms 3 are arranged opposite to each other on the base 1 to provide balanced support force and improve the stability of the mobile crane.

[0038] In one embodiment, the base 1 is rectangular, and there are four support mechanisms 3, which are respectively located at the four apex corners of the base 1. When the mobile crane moves to a suitable position, the support rods 31 of the four support mechanisms 3 are rotated to move the support rods 31 away from the base 1, and the screw 321 is rotated to move it in the vertical sleeve 33 until it extends out of the vertical sleeve 33 and the support end 322 abuts against the ground, thereby increasing the support area of ​​the base 1 and improving the stability of the support.

[0039] Please see Figure 1 and 4 In this embodiment, the movable wheel set 2 includes four wheels 21, which are respectively located at the four top corners of the base 1; four support rods 31 are installed at one end of the base 1 and are respectively located on the same vertical line as the four wheels 21. When the screw 321 is rotated, it moves in the vertical sleeve 33 until it extends out of the vertical sleeve 33 and the support end 322 abuts against the ground. The height of the screw 321 and the support end 322 is higher than the height of the wheel set, so as to avoid movement during the lifting of heavy objects.

[0040] This utility model is not limited to the above-described embodiments. If any modifications or variations to this utility model do not depart from the spirit and scope of this utility model, and if such modifications and variations fall within the scope of the claims and equivalent technologies of this utility model, then this utility model also intends to include such modifications and variations.

Claims

1. A mobile crane, characterized in that: It includes a base, a set of casters, a support mechanism, a column, a rotating mechanism, and a lifting device; The movable wheel set is located at the bottom of the base; The support mechanism is disposed on the base and is used to abut against the ground; The column is fixed to the base in a vertical direction; The rotating mechanism is rotatably mounted on the column, and its rotating shaft is vertically arranged; The lifting device is located at the end of the rotating mechanism away from the column.

2. The mobile crane according to claim 1, characterized in that: The rotating mechanism includes a first mounting plate, a first rotating shaft, and a rotating frame; The first mounting plate is fixed to the column, and the first mounting plate is provided with a first vertical mounting hole; the first rotating shaft is rotatably and vertically mounted in the first vertical mounting hole; One end of the rotating frame is fixedly connected to the first rotating shaft, and the other end extends in the horizontal direction; The lifting device is located at the end of the rotating frame away from the first mounting plate.

3. The mobile crane according to claim 2, characterized in that: The rotating mechanism also includes a second mounting plate and a second rotating shaft; The rotating frame includes a rotating arm and a reinforcing rod; one end of the rotating arm is fixedly connected to the first rotating shaft, and the other end extends in a horizontal direction. The second mounting plate is fixed to the column, and the second mounting plate and the first mounting plate are located on the same vertical line; the second mounting plate is provided with a second vertical mounting hole corresponding to the position of the first vertical mounting hole; The second rotating shaft is rotatably and vertically mounted in the second vertical mounting hole; One end of the reinforcing rod is fixed to the rotating arm, and the other end is fixed to the second rotating shaft.

4. The mobile crane according to claim 2, characterized in that: The lifting device includes a drum, a pull rope, and a driver. The drum is installed at the end of the rotating frame away from the first mounting plate. The pull rope is wound around the drum, and the driver drives the drum to rotate.

5. The mobile crane according to claim 4, characterized in that: The lifting device also includes a limit switch and a controller. The limit switch is disposed on the drum and electrically connected to the controller. The controller is electrically connected to the drive and controls the drive to run or stop.

6. The mobile crane according to claim 5, characterized in that: The limit switch includes a limit rotation shaft and a contact plate. The limit rotation shaft is rotatably mounted on the drum and can rotate in the vertical direction. The contact plate is mounted on the limit rotation shaft and is located below the pull rope wound on the drum. The limiting rotation shaft is electrically connected to the controller.

7. The mobile crane according to claim 1, characterized in that: The support mechanism includes a support rod and a support foot. One end of the support rod is rotatably mounted to the edge of the base in a horizontal direction, and the support foot is movably disposed at the other end of the support rod in a vertical direction.

8. The mobile crane according to claim 7, characterized in that: The support rod is provided with a threaded vertical sleeve; The support leg includes a screw and a support end. The screw is installed in the vertical sleeve and threadedly connected to the vertical sleeve. The support end is fixed to the end of the screw facing the ground. The height of the screw is higher than the height of the movable wheel assembly, and the screw can pass through the vertical sleeve in a vertical direction so that the support end abuts against the ground.

9. The mobile crane according to claim 8, characterized in that: A handle is fixed to the end of the screw away from the support end, and the handle is located outside the vertical sleeve.

10. The mobile crane according to claim 7, characterized in that: The number of the support mechanisms is at least two, and the at least two support mechanisms are arranged opposite to each other on the base.

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