Heavy single-arm crane

Abstract

The heavy single-arm crane comprises a base, an X-axis base is arranged at the upper end of the base, the X-axis base comprises a welding bottom frame, first guide rail sliding block pairs are arranged on the upper portions of the two ends of the welding bottom frame, and first racks are arranged at the upper ends of the first guide rail sliding block pairs; a moving assembly is arranged on the upper portion of the X-axis base and comprises a mounting frame, a second servo motor is arranged in the middle of the mounting frame, the output end of the second servo motor is connected with a second speed reducer, the output end of the second speed reducer is connected with a coupler, the coupler is connected with a main shaft, and second gears are arranged at the two ends of the main shaft. The second gear is meshed with a second rack of the cantilever assembly; first servo motors are arranged at the two ends of the mounting frame, the output ends of the first servo motors are connected with first speed reducers, and the output ends of the first speed reducers are connected with the first gears. Free walking in a two-dimensional space can be achieved, then accurate positioning is achieved, the accuracy of the workpiece hoisting position is guaranteed, and the structure is simple; and double-shaft linkage can be realized, and the hoisting efficiency is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of hoisting equipment, and in particular relates to a heavy-duty single-arm crane. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] At present, in the photovoltaic bracket processing workshop, operators need to frequently change the shape and load and unload workpieces on the forming machine. Small workpieces are still mostly moved manually, which is labor-intensive and poses safety hazards. Large workpieces are difficult to move manually and are hoisted by crane. However, compared with the huge number of cold-bending forming machines, the number of cranes is very small, the driving distance is long, the hoisting speed is slow, and the work efficiency is low.

[0004] Although there are many types of lifting equipment, most of them are complex in structure, large in size and heavy in weight, and are not suitable for lifting parts within a small indoor area. Some existing single-arm cranes lack lifting devices, which is not conducive to adjusting the overall center of gravity. Some single-arm cranes have a single adsorption workpiece and cannot accurately position it. The traditional dual-axis movement range is insufficient, and the dual axes cannot be linked, the speed and efficiency are slow, and it cannot move freely in two-dimensional space. Utility Model Content

[0005] In view of the above problems, the utility model provides a heavy-duty single-arm crane, which can realize free walking in two-dimensional space and then accurately position, ensure the accuracy of the workpiece hoisting position, and has a simple structure; it can realize double-axis linkage and has high hoisting efficiency.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A heavy-duty single-arm crane comprises a base, an X-axis base is arranged at the upper end of the base, the X-axis base comprises a welded bottom frame, a first guide rail slider pair is arranged at the upper part of both ends of the welded bottom frame, and a first rack is arranged at the upper end of the first guide rail slider pair;

[0008] A moving assembly is arranged on the upper part of the X-axis base, and the moving assembly includes a mounting frame, and a second servo motor is arranged in the middle part of the mounting frame, and the output end of the second servo motor is connected to the second reducer, and the output end of the second reducer is connected to the coupling, and the coupling is connected to the main shaft, and second gears are arranged at both ends of the main shaft, and the second gears are meshed with the second rack of the cantilever assembly; first servo motors are arranged at both ends of the mounting frame, and the output end of the first servo motor is connected to the first reducer, and the output end of the first reducer is connected to the first gear, and the first gear is meshed with the first rack.

[0009] Furthermore, the base includes a middle beam, columns are arranged at both ends of the middle beam, a lower connecting plate is arranged at the upper end of the column, and a base is arranged at the lower end of the column; ears are arranged at the side ends of the column, and reinforcing ribs are arranged at the connection positions of the column and the middle beam.

[0010] Furthermore, an upper connecting plate is arranged at the lower part of the welded bottom frame, and the upper connecting plate is connected to the lower connecting plate; a front limiting bracket is arranged at the front part of the welded bottom frame, and a rear limiting bracket is arranged at the rear part.

[0011] Furthermore, the first guide rail slider pair includes a first guide rail slider pair A and a first guide rail slider pair B, the first guide rail slider pair A is located at one end of the upper part of the welding bottom frame, and the first guide rail slider pair B is located at the other end of the upper part of the welding bottom frame.

[0012] Furthermore, the first rack includes a first rack A and a first rack B, the first rack A is connected to the first guide rail slider moving pair A, and the first rack B is connected to the first guide rail slider moving pair B.

[0013] Furthermore, the first servo motor includes a first servo motor A and a first servo motor B, wherein the first servo motor A is located at one end of the mounting frame, and the first servo motor B is located at the other end of the mounting frame.

[0014] Furthermore, the first reducer includes a first reducer A and a first reducer B, one end of the first reducer A is connected to the output end of the first servo motor A, and one end of the first reducer B is connected to the output end of the first servo motor B.

[0015] Furthermore, the first gear includes a first gear A and a first gear B, the first gear A is connected to the output end of the first reducer A, and the first gear B is connected to the output end of the first reducer B.

[0016] Furthermore, the second gear includes a second gear A and a second gear B, the second gear A is connected to one end of the main shaft, and the second gear B is connected to the other end of the main shaft.

[0017] Furthermore, the cantilever assembly includes a cantilever, a second guide rail slider pair is arranged at both ends of the upper part of the cantilever, a second rack is arranged on the side of the second guide rail slider pair, and an upper limit bracket is arranged at the upper end of the second guide rail slider pair; and a clamping mechanism is arranged at both ends of the lower part of the cantilever.

[0018] Compared with the prior art, the utility model has the following advantages and positive effects:

[0019] The utility model realizes movement in the X-axis direction and the Z-axis direction through the cooperation of a base, an X-axis base, a moving assembly and a cantilever assembly, that is, the first servo motor drives the first gear to rotate, the first gear is meshed with the first rack, the first gear rotates to make the moving assembly move in the X-axis direction, and then the clamping assembly moves in the X-axis direction; the first servo motor drives the main shaft to rotate, and then the second gear rotates, the second gear rotates to make the second rack move in the Z-axis direction, and then the clamping assembly moves in the Z-axis direction, finally realizing free walking in two-dimensional space, and then precise positioning, to ensure the accuracy of the workpiece hoisting position.

[0020] The utility model has a simple and compact structure. The first servo motor and the second servo motor can work at the same time, and the control is coordinated and stable, so that the workpiece can be quickly hoisted to the required position, realizing double-axis linkage and high hoisting efficiency. A limit bracket is installed at the end of the welding frame to prevent it from falling out of the guide rail and being damaged; the second servo motor is a brake servo motor, which effectively prevents the equipment from slipping due to sudden power failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0022] Figure 1 This is a schematic diagram of the structure of a heavy-duty single-arm crane of the utility model;

[0023] Figure 2 It is a schematic diagram of the base of the utility model;

[0024] Figure 3 It is a schematic diagram of the X-axis base of the implementation structure;

[0025] Figure 4 It is a schematic diagram of the mobile components of the implementation structure;

[0026] Figure 5 is a schematic diagram of the cantilever assembly of the implementation structure;

[0027] In the figure: 1. base, 1.1. base, 1.2. column, 1.3. lifting lug, 1.4. lower connecting plate, 1.5. reinforcing rib; 1.6 middle beam;

[0028] 2. X-axis base, 2.1. Welded bottom frame, 2.2. Upper connecting plate, 2.3. Rear limit bracket, 2.4. First guide rail slider pair A, 2.5. First rack A, 2.6. Front limit bracket, 2.7. First rack B, 2.8. First guide rail slider pair B;

[0029] 3. Moving assembly, 3.1. First servo motor A, 3.2. First reducer A, 3.3. First gear A, 3.4. Second gear A, 3.5. Main shaft, 3.6. Coupling, 3.7. Second reducer, 3.8. Second servo motor, 3.9. Second gear B, 3.10. First servo motor B, 3.11. First reducer B, 3.12. First gear B; 3.13. Mounting frame;

[0030] 4. Cantilever assembly, 4.1. Second rack, 4.2. Upper limit bracket, 4.3. Second guide rail slider pair, 4.4. Cantilever; 5. Clamping mechanism. DETAILED DESCRIPTION

[0031] It should be noted that the following detailed descriptions are all exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0032] The following is a detailed description of the utility model with reference to the accompanying drawings. The embodiment disclosed herein is a heavy-duty single-arm crane. Figure 1 As shown, it includes a base 1, an X-axis base 2 is arranged at the upper end of the base 1, the X-axis base 2 includes a welded bottom frame 2.1, a first guide rail slider pair is arranged at the upper part of both ends of the welded bottom frame 2.1, and a first rack is arranged at the upper end of the first guide rail slider pair;

[0033] A moving assembly 3 is arranged on the upper part of the X-axis base 2, and the moving assembly 3 includes a mounting frame 3.13. A second servo motor 3.8 is arranged in the middle part of the mounting frame 3.13. The output end of the second servo motor 3.8 is connected to the second reducer 3.7, and the output end of the second reducer 3.7 is connected to the coupling 3.6, and the coupling 3.6 is connected to the main shaft 3.5. Second gears are arranged at both ends of the main shaft 3.5, and the second gears are meshed with the second rack 4.1 of the cantilever assembly 4; first servo motors are arranged at both ends of the mounting frame 3.13, and the output end of the first servo motor is connected to the first reducer, and the output end of the first reducer is connected to the first gear, and the first gear is meshed with the first rack.

[0034] During hoisting, the workpiece is clamped by the clamping mechanism 5, the first servo motor is started to transmit power to the first reducer, and then the first reducer transmits power to the first gear. Since the first gear is meshed with the first rack and the position of the first rack is fixed, the first gear rotates to drive the moving assembly 3 to move in the X-axis direction, and then drives the cantilever assembly 4 to move in the X-axis direction, and finally moves the clamping mechanism 5 to adjust the position of the workpiece in the X-axis direction. The second servo motor 3.8 is started to transmit power to the second reducer 3.7, and then the second reducer 3.7 transmits power to the coupling 3.6, and then the coupling 3.6 transmits power to the main shaft 3.5, and drives the second gear to rotate through the main shaft 3.5. Since the second gear is meshed with the second rack 4.1, the position of the second gear remains unchanged, the second gear rotates to move the second rack 4.1 in the Z-axis direction, so that the cantilever assembly 4 moves in the Z-axis direction, and finally moves the clamping mechanism 5 to adjust the position of the workpiece in the Z-axis direction. Movement in the X-axis direction and the Z-axis direction is achieved through the cooperation of the base 1, the X-axis base 2, the moving component 3 and the cantilever component 4, so that the workpiece can stay at any position in the two-dimensional space, ensuring the accuracy of the lifting position.

[0035] The first and second reducers 3.7 are provided to increase the torque of the first gear and the second gear, thereby increasing the load-bearing capacity and enabling the lifting of heavy workpieces. The second servo motor 3.8 is a brake servo motor. The motor brake means that when the motor stops working, due to some protective measures or other reasons, the rotor of the motor can be stably stopped at the desired position, and will not continue to rotate due to the inertia or friction resistance of the load. That is, the second servo motor 3.8 ensures the stability of the workpiece staying at any position in the Z-axis direction, effectively preventing the equipment from slipping due to sudden power failure.

[0036] like Figure 2 As shown, the base 1 includes an intermediate beam 1.6, columns 1.2 are arranged at both ends of the intermediate beam 1.6, a lower connecting plate 1.4 is arranged at the upper end of the column 1.2, and a base 1.1 is arranged at the lower end of the column 1.2; a lifting lug 1.3 is arranged at the side end of the column 1.2, and a reinforcing rib 1.5 is arranged at the connection position between the column 1.2 and the intermediate beam 1.6. The base 1 provides support for the X-axis base 2, the moving assembly 3 and the cantilever assembly 4, and the base 1 is hoisted to the specified position through the lifting lug 1.3, and then fixed to the ground through the base 1.1, so as to ensure stability during hoisting. The reinforcement rib 1.5 is arranged to increase the bearing capacity of the base 1, so as to hoist heavier workpieces.

[0037] like Figure 3As shown, an upper connecting plate 2.2 is provided at the lower part of the welding bottom frame 2.1, and the upper connecting plate 2.2 is connected to the lower connecting plate 1.4; a front limiting bracket 2.6 is provided at the front part of the welding bottom frame 2.1, and a rear limiting bracket 2.3 is provided at the rear part. The front limiting bracket 2.6 and the rear limiting bracket 2.3 are used to limit the position in the X-axis direction, so as to prevent the first gear and the first rack from being disengaged from the meshing, and to prevent the gear from falling off the guide rail and causing damage.

[0038] like Figure 3 As shown, the first guide rail slider pair includes a first guide rail slider pair A2.4 and a first guide rail slider pair B2.8, the first guide rail slider pair A2.4 is located at one end of the upper part of the welded bottom frame 2.1, and the first guide rail slider pair B2.8 is located at the other end of the upper part of the welded bottom frame 2.1. The first rack includes a first rack A2.5 and a first rack B2.7, the first rack A2.5 is connected to the first guide rail slider moving pair A, and the first rack B2.7 is connected to the first guide rail slider moving pair B.

[0039] like Figure 4 As shown, the first servo motor includes a first servo motor A3.1 and a first servo motor B3.10, the first servo motor A3.1 is at one end of the mounting frame 3.13, and the first servo motor B3.10 is at the other end of the mounting frame 3.13. The first reducer includes a first reducer A3.2 and a first reducer B3.11, one end of the first reducer A3.2 is connected to the output end of the first servo motor A3.1, and one end of the first reducer B3.11 is connected to the output end of the first servo motor B3.10. The first gear includes a first gear A3.3 and a first gear B3.12, the first gear A3.3 is connected to the output end of the first reducer A3.2, and the first gear B3.12 is connected to the output end of the first reducer B3.11. The second gear includes a second gear A3.4 and a second gear B3.9, the second gear A3.4 is connected to one end of the main shaft 3.5, and the second gear B3.9 is connected to the other end of the main shaft 3.5.

[0040] The first guideway slider pair and the second guideway slider pair are both composed of guideway, slider and movable connecting plate, which play a guiding role. The difference between the first guideway slider pair and the second guideway slider pair is the different sizes of the components. The slider slides in the guideway, the movable connecting plate is fixedly connected to the slider, and the rack is fixedly connected to the movable connecting plate. The motor is connected to the gear through the reducer, and the gear rack is meshed and driven, and moves back and forth along the guideway slider pair under the action of the motor.

[0041] like Figure 5As shown, the cantilever assembly 4 includes a cantilever 4.4, a second guide rail slider pair 4.3 is arranged at both ends of the upper part of the cantilever 4.4, a second rack 4.1 is arranged at the side of the second guide rail slider pair 4.3, and an upper limit bracket 4.2 is arranged at the upper end of the second guide rail slider pair 4.3; and a clamping mechanism 5 is arranged at both ends of the lower part of the cantilever 4.4. The upper limit bracket 4.2 is used to limit the position in the Z-axis direction to prevent the second gear and the second rack 4.1 from being disengaged; the clamping mechanism 5 is detachably connected to the cantilever assembly 4, and the clamping mechanism 5 can be replaced according to the shape of the workpiece, and has strong adaptability.

[0042] Although the above describes the specific implementation methods of the utility model in combination with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A heavy-duty single-arm crane, characterized in that: It includes a base, an X-axis base is arranged at the upper end of the base, the X-axis base includes a welded bottom frame, a first guide rail slider pair is arranged at the upper part of both ends of the welded bottom frame, and a first rack is arranged at the upper end of the first guide rail slider pair; A moving assembly is arranged on the upper part of the X-axis base, and the moving assembly includes a mounting frame, and a second servo motor is arranged in the middle part of the mounting frame, and the output end of the second servo motor is connected to the second reducer, and the output end of the second reducer is connected to the coupling, and the coupling is connected to the main shaft, and second gears are arranged at both ends of the main shaft, and the second gears are meshed with the second rack of the cantilever assembly; first servo motors are arranged at both ends of the mounting frame, and the output end of the first servo motor is connected to the first reducer, and the output end of the first reducer is connected to the first gear, and the first gear is meshed with the first rack.

2. A heavy-duty single-arm crane as claimed in claim 1, characterized in that: The base comprises a middle beam, two ends of the middle beam are provided with columns, the upper ends of the columns are provided with lower connecting plates, and the lower ends of the columns are provided with bases; the side ends of the columns are provided with hanging ears, and reinforcing ribs are provided at the connection positions of the columns and the middle beam.

3. A heavy-duty single-arm crane as claimed in claim 2, characterized in that: An upper connecting plate is arranged at the lower part of the welding bottom frame, and the upper connecting plate is connected to the lower connecting plate; a front limiting bracket is arranged at the front part of the welding bottom frame, and a rear limiting bracket is arranged at the rear part.

4. A heavy-duty single-arm crane as claimed in claim 1, characterized in that: The first guide rail slider pair includes a first guide rail slider pair A and a first guide rail slider pair B. The first guide rail slider pair A is located at one end of the upper part of the welding bottom frame, and the first guide rail slider pair B is located at the other end of the upper part of the welding bottom frame.

5. A heavy-duty single-arm crane as claimed in claim 4, characterized in that: The first rack includes a first rack A and a first rack B, wherein the first rack A is connected to a first guide rail slider moving pair A, and the first rack B is connected to a first guide rail slider moving pair B.

6. A heavy-duty single-arm crane as claimed in claim 1, characterized in that: The first servo motor includes a first servo motor A and a first servo motor B. The first servo motor A is located at one end of the mounting frame, and the first servo motor B is located at the other end of the mounting frame.

7. A heavy-duty single-arm crane as claimed in claim 6, characterized in that: The first reducer includes a first reducer A and a first reducer B. One end of the first reducer A is connected to the output end of the first servo motor A, and one end of the first reducer B is connected to the output end of the first servo motor B.

8. A heavy-duty single-arm crane as claimed in claim 7, characterized in that: The first gear includes a first gear A and a first gear B. The first gear A is connected to the output end of the first reducer A, and the first gear B is connected to the output end of the first reducer B.

9. A heavy-duty single-arm crane as claimed in claim 1, characterized in that: The second gear includes a second gear A and a second gear B. The second gear A is connected to one end of the main shaft, and the second gear B is connected to the other end of the main shaft.

10. A heavy-duty single-arm crane as claimed in claim 1, characterized in that: The cantilever assembly includes a cantilever, with second guide rail slider pairs arranged at both ends of the upper part of the cantilever, a second rack arranged on the side of the second guide rail slider pair, and an upper limit bracket arranged at the upper end of the second guide rail slider pair; and a clamping mechanism is arranged at both ends of the lower part of the cantilever.

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