Auxiliary positioning device for welding main beam of crane

Abstract

The utility model discloses an auxiliary positioning device for crane main beam welding, and relates to the technical field of crane main beam welding. The device comprises a bottom plate, the top of the bottom plate is fixedly connected with a lower positioning plate, and the top of the lower positioning plate is provided with an upper positioning plate; a moving assembly is arranged at the top of the bottom plate and comprises a box fixedly connected to the front side of the lower positioning plate. The motor drives the conveying wheel to be in friction transmission with the main beam, automatic translation of the main beam is achieved, the limiting wheel and the guide rod are matched for stable guiding, multi-position welding can be completed without repeated disassembly and assembly, the movable frame is in linkage with the second air cylinder and the third air cylinder, and accurate lifting of the upper positioning plate is achieved. The pressing requirements of welding workpieces with different thicknesses are met, welding heat is rapidly conducted into cooling liquid in the upper positioning plate through a heat conduction column, real-time monitoring is combined with a temperature sensor, an alarm is triggered when the temperature is overheated, heat dissipation lag caused by failure of the cooling liquid is avoided, and the risk of thermal deformation of the workpieces is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of crane main beam welding technology, and in particular relates to an auxiliary positioning device for welding crane main beams. Background Technology

[0002] The crane main beam is one of the key components of the crane structure, responsible for bearing the main load of the crane and supporting its lifting, hoisting, and movement functions. It is usually made of steel or other high-strength materials. During the production and processing of the crane main beam, it needs to be welded to other components. To ensure the accuracy, stability, and quality of the welding process, auxiliary positioning devices are used during welding.

[0003] The existing auxiliary positioning devices have the following shortcomings during use: (1) poor positioning flexibility: when the main beam needs to be welded at multiple stations, it is necessary to frequently disassemble or use multiple devices, which is inefficient and easily introduces positioning errors; (2) insufficient control of thermal deformation: high temperature during welding can easily cause local deformation of the workpiece. The existing devices lack active heat dissipation means, which affects the accuracy of weld formation; (3) low degree of automation: the adjustment of the main beam position depends on manual operation, which makes it difficult to ensure the stability of movement and increases labor intensity.

[0004] To address this issue, we provide an auxiliary positioning device for welding the main beam of a crane, thereby solving the problems mentioned above. Utility Model Content

[0005] The purpose of this utility model is to provide an auxiliary positioning device for welding the main beam of a crane. By combining the moving component and the heat-conducting component, it solves the problem that most auxiliary positioning devices in the prior art are fixed connections, which cannot meet the needs of welding multiple parts of the main beam, and the heat during welding cannot be handled in time, resulting in the deformation of the welded workpiece due to heat.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0007] This utility model relates to an auxiliary positioning device for welding the main beam of a crane. It includes a base plate, a lower positioning plate fixedly connected to the top of the base plate, and an upper positioning plate on top of the lower positioning plate. A moving assembly is located on the top of the base plate. The moving assembly includes a housing fixedly connected to the front of the lower positioning plate, a motor fixedly connected to one side inside the housing, and a conveying wheel movably connected to one side of the lower positioning plate. The moving assembly drives the crane main beam to move. A heat-conducting assembly is located on top of the lower positioning plate. The heat-conducting assembly includes a heat-conducting column fixedly connected to the bottom of the upper positioning plate, a temperature detection sensor and an alarm fixedly connected to the top of the upper positioning plate, and rapidly cools the welded parts through the heat-conducting assembly.

[0008] The present invention is further configured such that the moving component includes a first cylinder fixedly connected to the top of the lower positioning plate, a support plate fixedly connected to the output end of the first cylinder, and a limiting wheel movably connected to one side of the support plate.

[0009] The present invention is further configured such that a bracket is fixedly connected to the rear side of the lower positioning plate, and a second cylinder is fixedly connected to the front side of the bracket.

[0010] The present invention is further configured such that a movable frame is fixedly connected to the output end of the second cylinder, and a third cylinder is fixedly connected to the bottom of the movable frame.

[0011] The present invention is further configured such that a mounting hole is provided on the top of the base plate, through which the entire device is fixed.

[0012] The present invention is further configured such that a guide rod is fixedly connected to the top of the lower positioning plate, and the motor output end is fixedly connected to the conveying wheel.

[0013] The present invention is further configured such that a guide rod is provided on the top of the second cylinder, and the guide rod is fixedly connected to the bracket.

[0014] The present invention has the following beneficial effects.

[0015] 1. This utility model achieves automatic translation of the main beam through friction transmission between the motor-driven conveyor wheel and the main beam. Combined with the limit wheel and guide rod for stable guidance, multi-position welding can be completed without repeated disassembly and assembly. The linkage design of the moving frame with the second and third cylinders enables precise lifting and lowering of the upper positioning plate, adapting to the clamping requirements of welding workpieces of different thicknesses. The heat conduction column quickly transfers the welding heat to the coolant inside the upper positioning plate. Combined with real-time monitoring by the temperature sensor, an alarm is triggered when the temperature exceeds the limit, avoiding heat dissipation lag caused by coolant failure and reducing the risk of workpiece thermal deformation.

[0016] 2. This utility model features a cavity-type upper positioning plate design that supports coolant circulation and replacement, continuously maintaining heat dissipation efficiency. The first cylinder and the limit wheel work together to provide bidirectional clamping force when the main beam moves, preventing deviation. The guide rod ensures the linear movement of the moving frame, and the mounting holes and modular structure design facilitate quick fixation of the device and adaptation to different working scenarios.

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0019] Figure 1This is a perspective view of an auxiliary positioning device for welding the main beam of a crane.

[0020] Figure 2 This is a sectional view of the box body in an auxiliary positioning device for welding the main beam of a crane.

[0021] Figure 3 This is a cross-sectional view of the lower positioning plate in an auxiliary positioning device for welding the main beam of a crane.

[0022] Figure 4 This is a cross-sectional view of the upper positioning plate in an auxiliary positioning device for welding the main beam of a crane.

[0023] Figure 5 This is a bottom view of an auxiliary positioning device for welding the main beam of a crane.

[0024] In the attached diagram: 1. Base plate; 2. Lower positioning plate; 3. Upper positioning plate; 4. Box body; 5. Motor; 6. Conveyor wheel; 7. Heat-conducting column; 8. Temperature detection sensor; 9. Alarm; 10. First cylinder; 11. Support plate; 12. Limiting wheel; 13. Bracket; 14. Second cylinder; 15. Moving frame; 16. Third cylinder. Detailed Implementation

[0025] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Example 1

[0027] Please see Figures 1-5This utility model relates to an auxiliary positioning device for welding the main beam of a crane. It includes a base plate 1, which supports the entire device. A lower positioning plate 2 is fixedly connected to the top of the base plate 1. The top of the lower positioning plate 2 has a groove, and an upper positioning plate 3 is positioned on top of the lower positioning plate 2. The upper positioning plate 3 is a hollow design, storing coolant for cooling. An inlet pipe is connected to the top of the upper positioning plate 3, and a drain pipe is connected to one side of the upper positioning plate 3. Both the inlet and drain pipes are threaded with sealing caps. A moving assembly is located on the top of the base plate 1. The moving assembly includes a housing 4 fixedly connected to the front of the lower positioning plate 2, a motor 5 fixedly connected to one side of the housing 4, and a conveyor wheel 6 movably connected to one side of the lower positioning plate 2. The conveyor wheel 6 is located in the groove at the top of the lower positioning plate 2, and its rear end is movably connected to the inside of the groove via a bearing. The conveyor wheel 6 is higher than the lower positioning plate 2, ensuring that when the conveyor wheel 6 rotates, it can drive the crane main beam to move through friction with the bottom of the crane main beam for welding. With the change in position, the front end of the conveyor wheel 6 extends into the interior of the housing 4. The front side of the conveyor wheel 6 is also movably connected to the housing 4 via a bearing. There are two conveyor wheels 6, and drive wheels are fixedly connected to the surfaces of both conveyor wheels 6. The two drive wheels are connected by a belt for rotation. The main beam of the crane is moved by the moving component. A heat-conducting component is set on the top of the lower positioning plate 2. The heat-conducting component includes a heat-conducting column 7 fixedly connected to the bottom of the upper positioning plate 3. The bottom end of the heat-conducting column 7 is located at the bottom of the upper positioning plate 3, and the top end of the heat-conducting column 7 is located inside the upper positioning plate 3. A temperature detection sensor 8 and an alarm 9 are fixedly connected to the top of the upper positioning plate 3. A detection probe is fixedly connected to the bottom of the temperature detection sensor 8. The bottom of the detection probe extends into the interior of the upper positioning plate 3. The detection probe and the upper positioning plate 3 are fixedly connected by a sealing structure. The sealing structure is one of a sealing ring and a sealing gasket. The temperature detection sensor 8 and the alarm 9 are existing mature technologies and will not be described in detail here. The welded parts are rapidly cooled by the heat-conducting component.

[0028] Example 2

[0029] Please see Figures 1-5Based on Embodiment 1, the moving assembly further includes a first cylinder 10 fixedly connected to the top of the lower positioning plate 2, a support plate 11 fixedly connected to the output end of the first cylinder 10, a limiting wheel 12 movably connected to one side of the support plate 11, the limiting wheel 12 and the support plate 11 being movably connected via bearings, a bracket 13 fixedly connected to the rear side of the lower positioning plate 2, a second cylinder 14 fixedly connected to the front side of the bracket 13, a moving frame 15 fixedly connected to the output end of the second cylinder 14, and a third cylinder fixedly connected to the bottom of the moving frame 15. 16. The output end of the third cylinder 16 is fixedly connected to the upper positioning plate 3. The top of the base plate 1 is provided with a mounting hole, through which the entire device is fixed. The top of the lower positioning plate 2 is fixedly connected to a guide rod. The output end of the motor 5 is fixedly connected to the conveying wheel 6. The support plate 11 is sleeved on the surface of the guide rod, and the support plate 11 can slide on the surface of the guide rod. The top of the second cylinder 14 is provided with a guide rod, which is fixedly connected to the bracket 13. The movable frame 15 is sleeved on the surface of the guide rod, and the movable frame 15 can slide on the surface of the guide rod.

[0030] The working principle of this utility model is as follows: the entire device is fixed in the required position through the base plate 1 and the mounting hole, the main beam of the crane is placed on the top of the lower positioning plate 2, the first cylinder 10 works to drive the support plate 11 and the limiting wheel 12 to move down, so that the limiting wheel 12 contacts the top of the main beam of the crane.

[0031] At this point, the workpiece to be welded to the top of the crane's main beam can be placed at the bottom of the upper positioning plate 3, positioned at the welding location on the crane's main beam. The second cylinder 14 then operates, moving the moving frame 15 and all its components. The third cylinder 16 then operates, moving the upper positioning plate 3 and all its components downwards, pressing down on and positioning the workpiece. Multiple heat-conducting columns 7, evenly fixed to the bottom of the upper positioning plate 3, come into contact with the workpiece. The heat generated during welding is quickly conducted to the coolant by the heat-conducting columns 7, reducing the impact of welding heat on the workpiece and ensuring welding quality. A temperature sensor 8 monitors the coolant temperature inside the upper positioning plate 3 in real time. If the temperature exceeds a set value, an alarm 9 sounds, allowing the operator to replace the coolant. The coolant circulates through the inlet and outlet pipes, ensuring long-term heat dissipation. The linkage design of the guide rod and the moving frame 15 ensures the linear accuracy of the upper positioning plate 3's lifting and lowering, adapting to the clamping requirements of workpieces of varying thicknesses.

[0032] When it is necessary to change the welding position of the crane main beam, the motor 5 is turned on, which drives the two conveyor wheels 6 to rotate through the drive wheel and belt. The friction between the conveyor wheels 6 and the bottom of the crane main beam drives the crane main beam to move and change the welding position. The limit wheel 12 can make the crane main beam move more smoothly.

[0033] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An auxiliary positioning device for welding the main beam of a crane, comprising a base plate (1), characterized in that: The bottom plate (1) is fixedly connected to the top of the lower positioning plate (2), and the bottom positioning plate (2) is provided with an upper positioning plate (3); The bottom plate (1) is provided with a moving component. The moving component includes a box (4) fixedly connected to the front side of the lower positioning plate (2), a motor (5) fixedly connected to one side inside the box (4), and a conveying wheel (6) movably connected to one side of the lower positioning plate (2). The moving component drives the crane main beam to move. The lower positioning plate (2) is provided with a heat conduction component on its top. The heat conduction component includes a heat conduction column (7) fixedly connected to the bottom of the upper positioning plate (3), a temperature detection sensor (8) fixedly connected to the top of the upper positioning plate (3), and an alarm (9). The heat conduction component is used to quickly cool down the welded parts.

2. The auxiliary positioning device for welding the main beam of a crane according to claim 1, characterized in that: The moving component also includes a first cylinder (10) fixedly connected to the top of the lower positioning plate (2), a support plate (11) fixedly connected to the output end of the first cylinder (10), and a limiting wheel (12) movably connected to one side of the support plate (11).

3. The auxiliary positioning device for welding the main beam of a crane according to claim 1, characterized in that: A bracket (13) is fixedly connected to the rear side of the lower positioning plate (2), and a second cylinder (14) is fixedly connected to the front side of the bracket (13).

4. The auxiliary positioning device for welding the main beam of a crane according to claim 3, characterized in that: The output end of the second cylinder (14) is fixedly connected to a movable frame (15), and the bottom of the movable frame (15) is fixedly connected to a third cylinder (16).

5. The auxiliary positioning device for welding the main beam of a crane according to claim 1, characterized in that: The bottom plate (1) has mounting holes on its top, through which the entire device is fixed.

6. The auxiliary positioning device for welding the main beam of a crane according to claim 1, characterized in that: The lower positioning plate (2) is fixedly connected to the top of a guide rod, and the output end of the motor (5) is fixedly connected to the conveyor wheel (6).

7. The auxiliary positioning device for welding the main beam of a crane according to claim 3, characterized in that: The second cylinder (14) is provided with a guide rod at the top, and the guide rod is fixedly connected to the bracket (13).

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