Hydraulic welding support clamp

Abstract

This invention belongs to the field of support fixture technology, specifically disclosing a hydraulic welding support fixture, including a base platform. A mounting groove is formed at the center of the top of the base platform, and a worktable is movably arranged inside the mounting groove. An inner cavity is formed directly below the mounting groove, and a driving cylinder is installed inside the inner cavity. A first clamping mechanism is provided on the surface of the worktable. A support frame is fixedly installed on the top of the base platform and on both sides of the mounting groove. A second clamping mechanism is provided on the surface of the support frame near its bottom end, and a third hydraulic mechanism is installed at the top of the support frame. This invention, through the cooperation of the first clamping mechanism, the second clamping mechanism, and the third hydraulic mechanism, enables the tank to be vertically installed in the device, facilitating welding work on the top of the tank. Furthermore, the device can position and clamp the tank from different directions, ensuring precise positioning of the tank during welding, preventing shaking or displacement, and thus guaranteeing welding quality.

Description

Technical Field

[0001] This invention belongs to the field of support fixtures, and specifically discloses a hydraulic welding support fixture. Background Technology

[0002] Welding generally refers to the welding of metals, a forming method that uses heat or pressure, or both, to create interatomic bonding forces between two separate objects, thus joining them into a single unit. A hydraulic welding support fixture is a welding fixture that uses a hydraulic system for clamping and releasing, primarily used to fix workpieces during the welding process, ensuring welding accuracy and stability. In the processing of tank bodies, welding is required on the top of the tank to ensure its sealing and structural strength.

[0003] Most existing tank welding operations involve laying the tank flat and positioning it using hydraulic support clamps. However, this welding method has significant drawbacks: firstly, the large amount of heat generated during welding makes the tank prone to deformation; secondly, the stress distribution changes when the tank is laid flat, leading to localized stress concentration. Furthermore, when welding a tank vertically, the existing hydraulic welding support clamps are insufficient to provide stable support due to the tank's high center of gravity, resulting in poor stability. Even minor vibrations or external disturbances during welding can cause the tank to sway or shift, severely impacting welding accuracy and quality, and potentially leading to safety accidents. Summary of the Invention

[0004] In view of this, the purpose of this invention is to propose a hydraulic welding support fixture to solve the problem that most existing tank welding operations use a method of laying the tank flat and positioning it with a hydraulic support fixture. However, this welding method has obvious defects: on the one hand, the large amount of heat generated during the welding process can cause the tank to deform easily; on the other hand, when the tank is laid flat, the stress distribution of various parts will change, thus causing local stress concentration problems. When the tank is welded vertically, due to the high center of gravity of the tank, the existing hydraulic welding support fixture is difficult to provide stable support for the tank, resulting in poor stability. During the welding operation, even a small vibration or external interference may cause the tank to shake or shift, which not only seriously affects the accuracy and quality of the welding, but may even cause safety accidents.

[0005] To achieve the above objectives, the present invention provides a hydraulic welding support fixture, including a base platform. A placement groove is provided at the middle of the top of the base platform. A worktable is movably arranged inside the placement groove. An inner cavity groove is provided directly below the placement groove. A drive cylinder is arranged inside the inner cavity groove. The output end of the drive cylinder is connected to the worktable. A first clamping mechanism is provided on the surface of the worktable. A support frame is fixedly installed on the top of the base platform and on both sides of the placement groove. A second clamping mechanism is provided on the surface of the support frame near the bottom. A third hydraulic mechanism is installed on the top of the support frame. The first clamping mechanism, the second clamping mechanism, and the third hydraulic mechanism cooperate with each other to position the tank.

[0006] In the above technical solution, preferably, path grooves are provided at the four corners of the worktable, the first clamping mechanism includes four sliding columns, the four sliding columns are slidably installed in the four path grooves respectively, a clamping cylinder is bolted to the top of the sliding column, the clamping cylinder is movably located on the upper surface of the worktable, a first positioning frame is installed at the four corners of the bottom of the drive cylinder, a second positioning frame is fixedly installed at the bottom of the sliding column, the second positioning frame is movably located on the lower surface of the worktable, and a first connecting rod is installed between the first positioning frame and the second positioning frame through a rotating shaft.

[0007] In the above technical solution, preferably, the support frame has a side groove on its surface near the bottom, and an insertion groove is formed in the middle of the side groove. The insertion groove passes through the support frame. The second clamping mechanism includes an insertion strip, which is movably inserted into the insertion groove. Gears are rotatably installed inside the side groove and on both sides of the insertion groove. A rack is provided on the end face of the insertion strip. The racks at both ends of the insertion strip mesh with the two gears respectively. A fixing plate is fixedly installed on the surface of the gear, and an arc-shaped strip is installed on the other end of the fixing plate.

[0008] In the above technical solution, preferably, a long strip is fixedly installed at one end of the arc-shaped strip near the fixed plate, and the long strip is fixedly installed at the end of the fixed plate by bolts.

[0009] In the above technical solution, preferably, through slots are provided on both sides of the mounting slot, the through slots penetrate the base platform, side plates are fixedly installed on both sides of the worktable, the side plates are movably installed in the through slots, a third positioning frame is fixedly installed at the end of the side plate, a second connecting rod is installed inside the third positioning frame through a rotating shaft, a fourth positioning slot is provided at the top of the second connecting rod, a round hole is provided at one end of the insertion strip away from the middle of the device, the fourth positioning slot is sleeved on the surface of the insertion strip, and a cylindrical strip is provided inside the fourth positioning slot, the surface of the cylindrical strip movably penetrates the round hole.

[0010] In the above technical solution, preferably, a guide post is provided inside the through groove, and the guide post moves through the side plate.

[0011] In the above technical solution, preferably, the support frame has a mating groove on the surface near the top, the third hydraulic mechanism includes a synchronization mechanism, the synchronization mechanism is installed in the mating groove, a crossbar is installed between the synchronization belts of the two synchronization mechanisms, a stepper motor is installed at the top of the crossbar, a positioning plate is provided below the crossbar, the output end of the stepper motor is connected to the positioning plate, and a pressure plate is installed at the bottom of the positioning plate by bolts.

[0012] In the above technical solution, preferably, a circular groove is provided at the center of the top of the workbench, and a rotating disk is rotatably installed inside the circular groove.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] It is easier for staff to observe the welding process of the tank. When welding the top of the tank, the molten metal flows downward under the influence of gravity, which helps to reduce defects such as porosity and slag inclusions. At the same time, the gravity distribution of the tank is more uniform, and the deformation caused by welding heat is relatively small. When the weld cools, the stress distribution is more uniform, which reduces the risk of tank deformation.

[0015] During the operation of this hydraulic welding support fixture, the first clamping mechanism, the second clamping mechanism and the third hydraulic mechanism work closely together. When the drive cylinder is started and the worktable is moved upward, under the action of the first positioning frame, the second positioning frame and the first connecting rod, the sliding column gradually slides along the path groove at the end corner of the worktable towards the middle of the worktable, and the clamping cylinder connected to it moves synchronously, thereby realizing the clamping operation on the bottom of the tank.

[0016] Meanwhile, the side plate and the plug bar are connected to each other through the second connecting rod, which enables the second clamping mechanism to work in coordination with the first clamping mechanism. During the rise of the worktable, the plug bar will move towards the center of the device. Since the end face of the plug bar is provided with a rack and meshes with the gears on both sides of the side groove, its linear motion is converted into the circular motion of the gear. The rotation of the gear drives the fixed plate fixed on the surface to rotate together, which in turn causes the arc strip installed on the other end of the fixed plate to rotate towards the direction of the tank. Finally, the arc strips on both sides approach the tank from both sides and clamp the tank tightly.

[0017] Finally, the synchronous belt of the synchronizing mechanism operates, driving the crossbar to move downward inside the two support frames. The stepper motor installed on the top of the crossbar, the positioning plate below the crossbar, and the clamping plate connected to the positioning plate will also move downward synchronously until the clamping plate contacts and applies pressure to the top of the tank, completing the hydraulic clamping operation on the top of the tank. This achieves all-round and stable positioning and clamping of the tank, providing a strong guarantee for the smooth progress of welding work. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the top structure of the support frame of the present invention;

[0020] Figure 3 This is a schematic diagram of the base structure of the present invention;

[0021] Figure 4 This is a schematic diagram of the internal structure of the base platform of the present invention;

[0022] Figure 5 This is a schematic diagram of the first clamping mechanism and the second clamping mechanism of the present invention;

[0023] Figure 6 For the present invention Figure 4 Enlarged view of point A in the middle;

[0024] Figure 7 For the present invention Figure 5 Enlarged view of point B in the middle.

[0025] In the diagram: 1. Base platform; 2. Support frame; 3. Placement slot; 4. Through slot; 5. Inner cavity slot; 6. Worktable; 7. Side plate; 8. Drive cylinder; 9. First clamping mechanism; 10. Second clamping mechanism; 11. First positioning frame; 12. First connecting rod; 13. Path slot; 14. Sliding column; 15. Second positioning frame; 16. Clamping cylinder; 17. Side slot; 18. Insertion slot; 19. Gear; 20. Fixing plate; 21. Arc strip; 22. Long strip; 23. Insertion strip; 24. Round hole; 25. Third positioning frame; 26. Second connecting rod; 27. Fourth positioning slot; 28. Guide column; 29. ​​Rotating disk; 30. Mating slot; 31. Synchronization mechanism; 32. Crossbar; 33. Stepper motor; 34. Positioning disk; 35. Pressure disk. Detailed Implementation

[0026] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0028] like Figures 1-7 The hydraulic welding support fixture shown includes a base platform 1, with a mounting groove 3 at the center of the top of the base platform 1. A worktable 6 is movably mounted inside the mounting groove 3. An inner cavity groove 5 is located directly below the mounting groove 3, and a drive cylinder 8 is installed inside the inner cavity groove 5. The output end of the drive cylinder 8 is connected to the worktable 6. A first clamping mechanism 9 is provided on the surface of the worktable 6. A support frame 2 is fixedly installed on the top of the base platform 1 and on both sides of the mounting groove 3. A second clamping mechanism 10 is provided on the surface of the support frame 2 near the bottom. A third hydraulic mechanism is installed on the top of the support frame 2. The first clamping mechanism 9, the second clamping mechanism 10, and the third hydraulic mechanism cooperate to position the tank. Through the cooperation of the first clamping mechanism 9, the second clamping mechanism 10, and the third hydraulic mechanism, the tank can be vertically installed in the device, facilitating welding work on the top of the tank. Furthermore, the device can position and clamp the tank from different directions, ensuring accurate positioning of the tank during welding, avoiding shaking or displacement, and thus ensuring welding quality.

[0029] The worktable 6 has path grooves 13 at each of its four corners. The first clamping mechanism 9 includes four sliding pillars 14, which are slidably installed in the four path grooves 13. A clamping cylinder 16 is bolted to the top of each sliding pillar 14 and is movably located on the upper surface of the worktable 6. A first positioning frame 11 is installed at each of the four corners of the bottom of the drive cylinder 8. A second positioning frame 15 is fixedly installed at the bottom of each sliding pillar 14 and is movably located on the lower surface of the worktable 6. A first connecting rod 12 is installed between the first positioning frame 11 and the second positioning frame 15 via a pivot. The four sliding pillars 14 slide in the four path grooves 13, which provide precise sliding for the sliding pillars 14. The guide ensures that the sliding column 14 can only slide along a specific path, improving the stability and accuracy of the movement of the first clamping mechanism 9 and ensuring the reliable execution of the clamping action. The first positioning frame 11 and the second positioning frame 15 are connected by the first connecting rod 12. When the drive cylinder 8 drives the worktable 6 to move upward, under the action of the first positioning frame 11, the second positioning frame 15 and the first connecting rod 12, the sliding column 14 gradually moves towards the middle of the worktable 6 along the path groove 13, so that the clamping cylinder 16 can perform the clamping operation on the bottom of the tank. The top of the sliding column 14 is bolted to the clamping cylinder 16. This connection method facilitates the installation and disassembly of the clamping cylinder 16 and makes it easy for the staff to replace the clamping cylinder 16.

[0030] A side groove 17 is formed on the surface of the support frame 2 near the bottom. An insertion groove 18 is formed at the middle of the side groove 17, penetrating the support frame 2. The second clamping mechanism 10 includes an insertion strip 23, which is movably inserted into the insertion groove 18. Gears 19 are rotatably mounted inside the side groove 17 and on both sides of the insertion groove 18. A rack is provided on the end face of the insertion strip 23, and the racks at both ends of the insertion strip 23 mesh with two gears 19 respectively. A fixing plate 20 is fixedly mounted on the surface of the gears 19, and an arc-shaped strip 21 is mounted on the other end of the fixing plate 20. When the insertion strip 23 moves towards the center of the device, the linear motion of the insertion strip 23 is converted into the circular motion of the gears 19 because the racks at both ends mesh with the two gears 19 respectively. All are fixedly installed with a fixing plate 20. As the gear 19 rotates, the fixing plate 20 also rotates. Since the other end of the fixing plate 20 is equipped with an arc-shaped strip 21, the arc-shaped strip 21 will move closer to the workpiece as the fixing plate 20 rotates. Finally, the two arc-shaped strips 21 approach from both sides and tightly clamp the tank, thereby realizing the clamping function of the workpiece. The device uses the cooperation of the gear 19 and the rack to realize power transmission. The racks at both ends of the insertion strip 23 correspond to the gears 19 on both sides of the side groove 17. When the insertion strip 23 moves in the insertion groove 18, it can smoothly drive the gear 19 to rotate. This transmission method has high precision and can accurately convert the linear motion of the insertion strip 23 into the circular motion of the gear 19, ensuring the stability and accuracy of power transmission.

[0031] A long strip 22 is fixedly installed at one end of the arc-shaped strip 21 near the fixed plate 20. The long strip 22 is fixedly installed at the end of the fixed plate 20 by bolts. The arc-shaped strip 21 has multiple grooves at the end close to the tank body, and ball bearings are installed inside the grooves. The long strip 22 is fixedly installed at the end of the fixed plate 20 by bolts. This connection method allows the arc-shaped strip 21 to be stably connected to the fixed plate 20. When the fixed plate 20 swings with the rotation of the gear 19, it can reliably drive the arc-shaped strip 21 to move together, realizing the clamping action of the tank body. The arc-shaped strip 21 has multiple grooves with ball bearings at the end close to the tank body. When clamping the tank body, the ball bearings contact the surface of the tank body. When the tank body rotates, the ball bearings can roll in the grooves, reducing the friction between the arc-shaped strip 21 and the surface of the tank body, avoiding damage to the surface of the tank body due to excessive friction, and also ensuring that the tank body can maintain a good clamping state.

[0032] Through slots 4 are provided on both sides of the mounting slot 3, and the through slots 4 pass through the base platform 1. Side plates 7 are fixedly installed on both sides of the worktable 6. The side plates 7 are movably installed in the through slots 4. The matching design of the through slots 4 and the side plates 7 allows the worktable 6 to be stably installed on the base platform 1, restricting the horizontal sway of the worktable 6, enhancing the structural stability of the entire device, ensuring that the worktable 6 will not shift during processing, and improving processing accuracy. A third positioning frame 25 is fixedly installed at the end of the side plate 7. A second connecting rod 26 is installed inside the third positioning frame 25 through a rotating shaft. A fourth positioning slot 27 is provided at the top of the second connecting rod 26. A round hole 24 is provided at the end of the connector strip 23 away from the middle of the device. The fourth positioning slot 27 is sleeved on the surface of the connector strip 23, and a cylindrical strip is provided inside the fourth positioning slot 27. The surface of the cylindrical strip movably passes through the round hole 24. The side plate 7 and the connector strip 23 are connected by the second connecting rod 26. When the side plate 7 moves in the through slot 4 When the second connecting rod 26 drives the insertion strip 23 to move, it in turn drives the second clamping mechanism 10 to work. This design achieves the coordination of the movement of the worktable 6 and the action of the second clamping mechanism 10, so that while adjusting the position of the worktable 6, the workpiece can be automatically clamped or released, which improves work efficiency. The movement of the third positioning frame 25 drives the second connecting rod 26 to move through the rotating shaft. Since the top of the second connecting rod 26 is provided with a fourth positioning groove 27 and is sleeved on the surface of the insertion strip 23, and the cylindrical strip in the fourth positioning groove 27 passes through the round hole 24 of the insertion strip 23, the movement of the second connecting rod 26 can be transmitted to the insertion strip 23. Under the drive of the second connecting rod 26, the insertion strip 23 moves accordingly in the insertion groove 18. The movement of the insertion strip 23 drives the gear 19 to rotate through the meshing of the rack and pinion, thereby causing the fixing plate 20 and the arc strip 21 to perform clamping or releasing actions, realizing the clamping or releasing operation of the workpiece.

[0033] The through groove 4 is equipped with a guide post 28, which movably passes through the side plate 7. The guide post 28 provides a precise guide path for the side plate 7 to slide in the through groove 4, ensuring the straightness and stability of the worktable 6 during movement, and preventing the side plate 7 from shifting, shaking or getting stuck when sliding in the through groove 4, thereby improving the processing accuracy and reliability of the equipment.

[0034] The support frame 2 has a mating groove 30 on its surface near the top. The third hydraulic mechanism includes a synchronization mechanism 31, which is installed in the mating groove 30. A crossbar 32 is installed between the synchronous belts of the two synchronization mechanisms 31. A stepper motor 33 is installed on the top of the crossbar 32, and a positioning plate 34 is set below the crossbar 32. The output end of the stepper motor 33 is connected to the positioning plate 34. A clamping plate 35 is installed at the bottom of the positioning plate 34 by bolts. The arrangement of the two synchronization mechanisms 31 ensures the synchronicity of the crossbar 32 during movement. The synchronous belt drive can accurately transmit power, so that the crossbar 32 moves synchronously on both sides, ensuring that the stepper motor 33, the positioning plate 34, and the clamping plate 35 can maintain horizontal and synchronously descend or rise. Thus, the clamping plate 35 can press the top of the tank to realize the hydraulic clamping operation of the top of the tank. At the same time, the stepper motor 33 can drive the positioning plate 34 and the clamping plate 35 to rotate. Since the surface of the clamping plate 35 presses against the top of the tank, it can drive the tank to rotate.

[0035] A circular groove is provided at the center of the top of the workbench 6. A rotating disk 29 is rotatably installed inside the circular groove. The rotating disk 29 can work with the third hydraulic mechanism to drive the tank to rotate.

[0036] Working principle: First, the operator places the tank to be processed on the surface of the workbench 6. Then, when the drive cylinder 8 moves the workbench 6 upward, under the action of the first positioning frame 11, the second positioning frame 15, and the first connecting rod 12, the sliding column 14 gradually moves towards the center of the workbench 6 along the path groove 13, so that the clamping cylinder 16 clamps the bottom of the tank. The side plate 7 is connected to the insert strip 23 through the second connecting rod 26. When the side plate 7 moves in the through groove 4, it can drive the insert strip 23 to move through the second connecting rod 26, thereby driving the second clamping mechanism 10 to work. The movement of the third positioning frame 25 drives the second connecting rod 26 to move through the rotating shaft. Since the top of the second connecting rod 26 has a fourth positioning groove 27 and is sleeved on the surface of the insert strip 23, the cylindrical strip in the fourth positioning groove 27 passes through the round hole 24 of the insert strip 23. Therefore, the movement of the second link 26 can be transmitted to the insertion bar 23. Driven by the second link 26, the insertion bar 23 moves accordingly in the insertion slot 18. The movement of the insertion bar 23 drives the gear 19 to rotate through the meshing of the rack and pinion. As the gear 19 rotates, the fixing plate 20 also rotates. Since the other end of the fixing plate 20 is equipped with an arc-shaped bar 21, the arc-shaped bar 21 will move towards the workpiece as the fixing plate 20 rotates. Finally, the two arc-shaped bars 21 approach from both sides and clamp the tank tightly, thereby realizing the clamping function of the workpiece. Next, the synchronous belt drives the crossbar 32 to move down inside the two support frames 2. The stepper motor 33, the positioning plate 34 and the pressing plate 35 will also move down synchronously. Finally, the pressing plate 35 can press the top of the tank to realize the hydraulic clamping operation of the top of the tank.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A hydraulic welding support clamp comprising a base table, characterized in that, The middle end of the top of the base table is provided with a placing groove, a workbench is movably arranged in the placing groove, an inner cavity groove is arranged below the placing groove, a driving cylinder is arranged in the inner cavity groove, the output end of the driving cylinder is connected to the workbench, a first clamping mechanism is arranged on the surface of the workbench, support frames are fixedly arranged on the top of the base table and at both sides of the placing groove, a second clamping mechanism is arranged on the surface of the support frame close to the bottom end, a third hydraulic mechanism is arranged on the top end of the support frame, and the first clamping mechanism, the second clamping mechanism and the third hydraulic mechanism cooperate to position the tank body; Four path grooves are arranged at the four corners of the workbench, the first clamping mechanism comprises four sliding columns, the four sliding columns are slidably arranged in the four path grooves respectively, clamping cylinders are arranged on the top of the sliding column through bolt sleeve connection, the clamping cylinders are movably arranged on the upper surface of the workbench, first positioning frames are arranged at the four corners of the bottom of the driving cylinder, second positioning frames are fixedly arranged at the bottom of the sliding column, the second positioning frames are movably arranged on the lower surface of the workbench, and a first connecting rod is arranged between the first positioning frame and the second positioning frame through a rotating shaft. A side groove is arranged on the surface of the support frame close to the bottom end, an insertion groove is arranged in the middle of the inner side groove, the insertion groove penetrates the support frame, the second clamping mechanism comprises an insertion strip, the insertion strip is movably inserted in the insertion groove, gears are rotatably arranged in the inner side groove and at both sides of the insertion groove, a rack is arranged on the end surface of the insertion strip, the racks at both ends of the insertion strip are respectively engaged with two gears, a fixed plate is fixedly arranged on the surface of the gear, and an arc-shaped strip is arranged at the other end of the fixed plate. Two through grooves are arranged at both sides of the placing groove, the through grooves penetrate the base table, side plates are fixedly arranged at both sides of the workbench, the side plates are movably arranged in the through grooves, third positioning frames are fixedly arranged at the end of the side plate, a second connecting rod is arranged in the third positioning frame through a rotating shaft, a fourth positioning groove is arranged at the top of the second connecting rod, a round hole is arranged at one end of the insertion strip away from the middle of the device, the fourth positioning groove is sleeved on the surface of the insertion strip, and a cylindrical strip is arranged in the fourth positioning groove.

2. A hydraulic welding fixture as defined in claim 1, wherein, One end of the arc-shaped strip close to the fixed plate is fixedly provided with a long strip, and the long strip is fixedly arranged at the end of the fixed plate through bolts.

3. The hydraulic welding fixture of claim 1, wherein, A guide column is arranged in the inner through groove, and the guide column movably penetrates the side plate.

4. The hydraulic welding fixture of claim 1, wherein, A matching groove is arranged on the surface of the support frame close to the top end, the third hydraulic mechanism comprises a synchronous mechanism, the synchronous mechanism is arranged in the matching groove, a horizontal rod is arranged between the synchronous belts of two synchronous mechanisms, a stepping motor is arranged at the top of the horizontal rod, a positioning disc is arranged below the horizontal rod, the output end of the stepping motor is connected to the positioning disc, and a pressing disc is arranged at the bottom of the positioning disc through bolts.

5. The hydraulic welding fixture of claim 1, wherein, The center of the top of the workbench is provided with a circular groove, and a rotating disc is rotatably installed in the circular groove.

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