A hydraulic cylinder welding device based on cylinder barrel positioning

Abstract

The invention discloses a hydraulic cylinder welding device based on cylinder barrel positioning, which relates to the field of welding equipment, and includes a support seat for supporting the cylinder barrel, a clamping seat for positioning the cylinder barrel is installed above the support seat; a limit plate is arranged above the clamping seat and moves with the clamping seat, the limit plate is provided with a positioning block, and the positioning block is provided with a guide groove in the direction pointing to the axis of the limit plate; a driving ring is slidably connected with the positioning block along the length direction of the guide groove, the upper end of the positioning block is rotatably connected with a moving ring, the moving ring is threadedly connected with the driving ring, a clamping rod is vertically arranged in the guide groove, and a plurality of swing rods are arranged between the clamping rod and the positioning block, one end of the swing rod is vertically hinged with the positioning block, and the other end is vertically hinged with the clamping rod, the driving ring is vertically hinged with a push rod, and the end of the push rod away from the driving ring is hinged with the clamping rod. The application has the effect of improving the convenience of welding the oil nozzle on the outer side of the circular cylinder barrel.

Description

Technical Field

[0001] The invention relates to the field of welding equipment, in particular to a hydraulic cylinder welding device based on cylinder barrel positioning. Background Art

[0002] The hydraulic cylinder mainly includes a piston rod and a cylinder barrel located outside the piston rod, wherein the cylinder barrel is mainly used to provide support and power for the movement of the piston rod. The outside of the cylinder barrel needs to be assembled by welding with mounting structures such as flange seats, lifting ears, and bases, as well as components such as nozzles for connecting external oil circuits. In order to improve the welding accuracy of parts and components and reduce the probability of parts shifting during welding, when welding parts, it is necessary to use a positioning device to position the welded parts and the cylinder barrel.

[0003] Related technology can refer to the Chinese patent with announcement number CN219005009U, which discloses a welding device that is easy to position. The device includes a base plate and a welding gun. A vertical plate is fixedly installed on the base plate, an electric telescopic column is fixedly installed on the vertical plate, a movable plate is fixedly installed on the end of the output shaft of the electric telescopic column, the welding gun is rotatably arranged on the movable plate, an electric telescopic rod is fixedly installed on the movable plate, a mounting box is fixedly installed on the end of the output shaft of the electric telescopic rod, a fixing mechanism for fixing the oil nozzle is arranged in the mounting box, a cylinder is fixedly installed on the base plate, a fixing plate is fixedly installed on the cylinder output shaft, and a baffle is fixedly installed on the base plate. When welding the cylinder oil nozzle, the oil nozzle is automatically fixed by the mounting box and the positioning block, the fixing effect is good, the practicability is strong, the oil nozzles of different sizes can be fixed, and the applicability is strong.

[0004] With regard to the above-mentioned related technologies, before welding, the cylinder is fixed by the fixing plate and the cylinder is in a static state. When fixing the oil nozzle, it is necessary to extend all rubber blocks into the inner wall of the oil nozzle, and drive all movable blocks away from each other through the screw rod and the push block, so that the rubber block is in close contact with the inner wall of the oil nozzle and the oil nozzle is positioned, and then the oil nozzle is driven to move by the movable plate. However, when the outer circle of the cylinder is an arc, the side of the oil nozzle connected to the cylinder also needs to be provided with an arc groove. When welding the oil nozzle, it is necessary to make the arc groove of the oil nozzle coaxial with the outer circle of the cylinder. However, after the oil nozzle is positioned by the stop block and the rubber block, the oil nozzle is in a relatively static state with the installation box. After the oil nozzle is driven to contact the cylinder by the movable plate, if the arc groove of the oil nozzle does not fit the outer circle of the cylinder, it is necessary to loosen the positioning of the oil nozzle by the driving rubber block again. After re-adjusting the position of the oil nozzle, it is necessary to re-clamp the oil nozzle, which makes it inconvenient to weld the oil nozzle. Summary of the invention

[0005] In order to improve the convenience when welding the oil nozzle to the outside of the circular cylinder, the present application provides a hydraulic cylinder welding device based on cylinder positioning.

[0006] The present application provides a hydraulic cylinder welding device based on cylinder barrel positioning, which adopts the following technical solutions:

[0007] A hydraulic oil cylinder welding device based on cylinder barrel positioning comprises a support seat, an upper end portion of the support seat is provided with a positioning groove for placing the cylinder barrel, and also comprises: a clamping seat, which is located at one end of the positioning groove along the length direction and is slidably connected with the support seat along the length direction of the positioning groove, and the clamping seat is provided with a positioning assembly, when the cylinder barrel is located in the positioning groove, the clamping seat positions the cylinder barrel through the positioning assembly; a limiting plate, which is located at the upper end portion of the clamping seat and moves with the clamping seat, the upper end of the limiting plate is arc-shaped, when the cylinder body is located in the positioning groove, the limiting plate is coaxial with the cylinder body, and the limiting plate is slidably connected with a positioning block along the length direction, The positioning block is provided with a guide groove in the direction pointing to the axis of the limit plate; the driving ring is located at the upper end of the positioning block and is slidably connected to the positioning block along the length direction of the guide groove; the upper end of the positioning block is rotatably connected to a moving ring, the moving ring is sleeved on the outside of the driving ring and is threadedly connected to the driving ring; a clamping rod is vertically arranged in the guide groove, and a plurality of swing rods are arranged between the clamping rod and the positioning block, one end of the swing rod is vertically hinged to the positioning block, and the other end is vertically hinged to the clamping rod; a push rod corresponding to the clamping rod is vertically hinged to the driving ring, and one end of the push rod away from the driving ring is vertically hinged to the corresponding clamping rod.

[0008] By adopting the above technical solution, in the initial state, the clamping seat is located away from the positioning groove. After the cylinder is placed in the positioning groove, the support seat supports and limits the displacement of the cylinder in the circumferential direction through the positioning groove, and moves the clamping seat toward the cylinder, so that the clamping seat clamps and positions the cylinder through the positioning assembly. When the clamping seat moves, it drives the limit plate to move above the cylinder, and when the limit plate moves, it drives the positioning block to move. The displacement of the limit plate and the positioning block is preset according to the installation position of the oil nozzle. When the positioning assembly clamps the cylinder, the guide groove of the positioning block is directly opposite to the installation position of the cylinder oil nozzle. The oil nozzle is placed along the guide groove from top to bottom toward the cylinder. Under the action of gravity, the arc groove of the oil nozzle fits the outer circle of the cylinder, and the diameter of the guide groove is larger than the outer diameter of the oil nozzle, which makes it easy to fine-tune the position of the oil nozzle. The driving ring is initially far away from the positioning block, and all the clamping rods are far away from each other. When the oil nozzle is in the appropriate welding position, it is below all the clamping rods. The moving ring is rotated so that the moving ring drives the driving ring close to the oil nozzle. The driving ring drives the clamping rod to move through the push rod. Under the connection of the corresponding swing rod, all the clamping rods are close to each other, and their lower ends are close to the upper end of the oil nozzle. When the clamping rod contacts the oil nozzle, the oil nozzle is clamped and positioned, which facilitates the welding of the oil nozzle. Before positioning the oil nozzle, the positioning block and the guide groove are used to put the oil nozzle in the appropriate position, so there is no need to clamp and position the oil nozzle for a second time, which is conducive to improving the convenience of welding the oil nozzle on the outside of the circular cylinder.

[0009] Optionally, a plurality of positioning plates are provided at the lower end of the positioning block, and the plurality of positioning plates are circumferentially arranged along the guide groove, and all the positioning plates are vertically provided with adjusting rods, which pass through the positioning plates and are slidingly connected with the positioning plates along the axial direction, and an abutment block is fixedly provided on the adjusting rod in the direction close to the axis of the driving ring, and an elastic member is provided between the adjusting rod and the positioning plate, and when the elastic member is in a natural state, there is a gap between the abutment block and the positioning plate.

[0010] By adopting the above technical solution, the oil nozzle is located between multiple positioning plates and in the middle of all abutment blocks when it contacts the cylinder barrel. The elastic member is used to position the adjusting rod. When the oil nozzle is not in the appropriate welding position, the adjusting rod is moved so that the adjusting rod pushes the oil nozzle to move through the abutment block, thereby facilitating fine-tuning the position of the oil nozzle.

[0011] Optionally, an end of the adjusting rod close to the abutment block is provided with an external thread, and the adjusting rod is threadedly connected with an abutment ring, which is located on a side of the positioning plate away from the elastic member and abuts against the positioning plate.

[0012] By adopting the above technical solution, the abutment ring and the positioning plate cooperate to limit the adjustment rod, thereby limiting the initial position of the abutment block, so as to adjust the initial distance between the abutment block and the oil nozzle, thereby improving the guiding effect on the oil nozzle.

[0013] Optionally, the upper ends of all the positioning plates pass through the positioning blocks and are slidably connected to the positioning blocks, and the positioning plates are provided with a plurality of slots along the length direction, and the upper ends of the positioning blocks are slidably connected to blocks corresponding to the slots along a direction perpendicular to the positioning plates.

[0014] By adopting the above technical solution, when the positioning plate, the adjusting rod and the abutment block occupy the operating space of the welding gun, the positioning plate is moved vertically, and the positioning plate is limited by the cooperation of the card slot and the card block, so that the positioning plate drives the adjusting rod and the abutment block to avoid the welding gun.

[0015] Optionally, the positioning assembly includes a bidirectional screw, two tensioning blocks and two moving blocks. A support column is provided at the upper end of the clamping seat, the support column is coaxial with the limit plate, the bidirectional screw is arranged along the length direction of the support column and is threadedly connected to the support column, the two moving blocks are respectively located at both ends of the bidirectional screw and are threadedly connected to the bidirectional screw, the moving block is slidingly connected to the support column along the length direction of the support column, the two tensioning blocks are respectively located on both sides of the support column along the width direction, an articulated rod is provided between the moving block and the tensioning block, one end of the articulated rod is hinged to the moving block, and the other end is hinged to the tensioning block.

[0016] By adopting the above technical solution, when the cylinder is located in the positioning groove, the support column is coaxial with the cylinder, and the clamping seat is moved toward the cylinder, so that the support column drives the tensioning block to enter the cylinder. In the initial state, the two tensioning blocks are in a close position. When the tensioning block enters the cylinder, the bidirectional lead screw is rotated, so that the bidirectional lead screw drives the two moving blocks to move. The moving block drives the tensioning block away from the support column through the hinged rod and fits with the inner wall of the cylinder, and then cooperates with the positioning groove to limit the circumferential rotation of the cylinder, thereby improving the positioning effect of the cylinder.

[0017] Optionally, a support tube is fixedly provided at the upper end of the support seat, the support tube is sleeved on the outside of the support column and rotatably connected to the support column, a worm gear is coaxially fixed to the outside of the support column, and the support sleeve is rotatably connected to a worm meshing with the worm gear.

[0018] By adopting the above technical solution, under the support of the support tube, when the worm is rotated, the worm drives the support shaft to rotate through the meshing action with the worm wheel. After the tensioning block clamps the cylinder, the support shaft rotates and drives the cylinder to rotate, thereby facilitating the adjustment of the cylinder.

[0019] Optionally, the limit plate is fixedly connected to a sliding block at the end along the length direction, and a sliding groove corresponding to the sliding block is opened at the upper end of the clamping seat along the length direction. The sliding block is located in the sliding groove and is slidingly connected to the clamping seat along the length direction of the sliding groove. The clamping seat is rotatably connected to a threaded rod along the length direction of the sliding groove, and the threaded rod passes through the sliding block and is threadedly connected to the sliding block.

[0020] By adopting the above technical solution, the clamping seat limits and guides the sliding block through the sliding groove. When the threaded rod is rotated, the threaded rod pushes the sliding block to move along the sliding groove, thereby facilitating the adjustment of the position of the limiting plate.

[0021] Optionally, a plurality of support rods are provided in the positioning groove, the support rods are arranged circumferentially along the positioning groove, sliding blocks are fixedly connected to both ends of the support rods along the length direction, the clamping seat is provided with a movable groove connected to the positioning groove along the direction approaching or away from the axis of the limiting plate, the sliding block is located in the movable groove and is slidingly connected to the clamping seat along the length direction of the movable groove, a plurality of support wheels are provided in the length direction of the support rod, the support wheels are rotatably connected to the support rod, the clamping seat is detachably connected to a support plate, the support plate is located on the side of all the support rods away from the axis of the limiting plate, and is in conflict with all the support rods.

[0022] By adopting the above technical solution, the clamping seat limits and guides the sliding block through the moving groove, so that the sliding block moves along the length direction of the moving groove, which is convenient for adjusting the position of the support rod. At the same time, the clamping seat supports the support rod through the support plate, and the support rod supports and limits the cylinder through the support wheel, which is conducive to improving the convenience of rotating the cylinder. When different types of cylinders need to be processed, support plates of different diameters can be replaced, which is conducive to improving the applicability of the support seat.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. In the initial state, the clamping seat is located away from the positioning groove. After the cylinder is placed in the positioning groove, the support seat supports and limits the displacement of the cylinder along the circumferential direction through the positioning groove. The clamping seat is moved toward the cylinder so that the clamping seat clamps and positions the cylinder through the positioning assembly. When the clamping seat moves, it drives the limit plate to move above the cylinder. When the limit plate moves, it drives the positioning block to move. The displacement of the limit plate and the positioning block is preset according to the installation position of the oil nozzle. When the positioning assembly clamps the cylinder, the guide groove of the positioning block is directly opposite to the installation position of the cylinder oil nozzle. Place the oil nozzle along the guide groove from top to bottom toward the cylinder. Under the action of gravity, the arc groove of the oil nozzle fits the outer circle of the cylinder. The diameter of the guide groove is larger than the outer diameter of the oil nozzle, which makes it easy to fine-tune the position of the oil nozzle. The driving ring is initially far away from the positioning block. At this time, all the clamping rods are far away from each other. When the oil nozzle is in the appropriate welding position, it is below all the clamping rods. The moving ring is rotated so that the moving ring drives the driving ring close to the oil nozzle. The driving ring drives the clamping rod to move through the push rod. Under the connection of the corresponding swing rod, all the clamping rods are close to each other, and their lower ends are close to the upper end of the oil nozzle. When the clamping rod contacts the oil nozzle, the oil nozzle is clamped and positioned, which facilitates the welding of the oil nozzle. Before positioning the oil nozzle, the positioning block and the guide groove are used to put the oil nozzle in the appropriate position, so there is no need to clamp and position the oil nozzle a second time, which is conducive to improving the convenience of welding the oil nozzle to the outside of the circular cylinder.

[0025] 2. When the oil nozzle contacts the cylinder barrel, it is located between multiple positioning plates and in the middle of all abutment blocks. The elastic member is used to position the adjusting rod. When the oil nozzle is not in the proper welding position, the adjusting rod is moved so that the adjusting rod pushes the oil nozzle to move through the abutment block, thereby facilitating fine-tuning of the position of the oil nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the embodiment.

[0027] Figure 2 It is a schematic diagram intended to highlight the support rod structure.

[0028] Figure 3 It is a schematic diagram intended to highlight the composition of the positioning components.

[0029] Figure 4 It is a schematic diagram intended to highlight the connection structure between the limit plate and the positioning block.

[0030] Figure 5 It is a schematic diagram intended to highlight the connection structure between the clamping rod and the positioning block.

[0031] Explanation of the accompanying drawings: 1. support seat; 11. positioning groove; 12. support rod; 121. support wheel; 13. sliding block; 14. moving groove; 15. support plate; 2. clamping seat; 21. positioning assembly; 211. two-way screw; 212. tensioning block; 213. moving block; 214. hinged rod; 22. support column; 221. worm gear; 23. support cylinder; 231. worm; 24. sliding groove; 241. threaded rod; 3. limit plate; 31. positioning block; 311. guide groove; 312. rocker rod; 313. clamping block; 32. drive ring; 33. moving ring; 331. push rod; 34. clamping rod; 35. positioning plate; 351. adjusting rod; 352. abutment block; 353. elastic member; 354. abutment ring; 355. clamping groove; 36. sliding block. DETAILED DESCRIPTION

[0032] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0033] The embodiment of the present application discloses a hydraulic cylinder welding device based on cylinder barrel positioning.

[0034] Example:

[0035] Reference Figure 1 and Figure 2 A hydraulic cylinder welding device based on cylinder barrel positioning includes a support seat 1, a clamping seat 2 and a limit plate 3. A positioning groove 11 is provided at the upper end of the support seat 1 along the length direction, and a plurality of support rods 12 are arranged in the positioning groove 11. The plurality of support rods 12 are arranged in an arc shape along the side of the positioning groove 11. All the support rods 12 are provided with a plurality of support wheels 121 along the length direction. The support wheels 121 are rotatably connected with the support rods 12. The support wheels 121 on any two adjacent support rods 12 are staggered with each other. When the support rods 12 move, the support wheels 121 are driven to move.

[0036] Reference Figure 1 and Figure 2 , all support rods 12 are distributed around the same axis, which is set as the central axis. When the cylinder is placed in the positioning groove 11, all support rods 12 cooperate to support the cylinder through the support wheel 121, and the axis of the cylinder is coaxial with the central axis. Both ends of the support rods 12 along the length direction are fixed with sliding blocks 13. When the support rods 12 move, the sliding blocks 13 are driven to move. The support seat 1 is provided with a moving groove 14 corresponding to the sliding blocks 13. The moving groove 14 is set in a direction close to or away from the central axis. The sliding block 13 is located in the moving groove 14 and is slidably connected to the clamping seat 2 along the length direction of the moving groove 14.

[0037] Reference Figure 1 and Figure 2The clamping seat 2 limits the sliding block 13 through the moving groove 14, thereby facilitating the adjustment of the positions of the support rod 12 and the support wheel 121 to adapt to cylinders of different diameters. The clamping seat 2 is provided with a support plate 15, which is located on the side of all the support rods 12 away from the central axis, and the support plate 15 is in contact with all the support rods 12. The support plate 15 is provided with a fixing bolt, which passes through the support plate 15 and is threadedly connected to the clamping seat 2. The clamping seat 2 limits the support rod 12 through the support plate 15, thereby limiting the tendency of the support rod 12 to move away from the central axis. The structure of the support plate 15 is set with the position of the support rod 12. When adjusting the support rod 12, the support plate 15 is replaced by removing the fixing bolt.

[0038] Reference Figure 1 and Figure 3 The clamping seat 2 is located at the upper end of the support seat 1 and is slidably connected to the clamping seat 2 along the length direction of the positioning groove 11. A positioning assembly 21 is provided at the upper end of the clamping seat 2. The positioning assembly 21 includes a bidirectional lead screw 211, two tensioning blocks 212 and two moving blocks 213. A support cylinder 23 is fixed at the upper end of the clamping seat 2. The support cylinder 23 is rotatably connected to a support column 22. The axis of the support column 22 is coaxial with the central axis. When the clamping seat 2 moves, the support column 22 is driven to move by the support cylinder 23. A worm wheel 221 is coaxially fixed to the support column 22. The support sleeve is rotatably connected to a worm 231 meshing with the worm wheel 221. When the worm 231 is rotated, the worm 231 drives the support column 22 to rotate through the cooperation with the worm wheel 221.

[0039] Reference Figure 1 and Figure 3 The bidirectional lead screw 211 is parallel to the support column 22 and is rotatably connected to the support column 22. When the support column 22 moves, the bidirectional lead screw 211 is driven to move. The two moving blocks 213 are both located at one end of the support column 22 close to the positioning groove 11, and the two moving blocks 213 are respectively located at both ends of the bidirectional lead screw 211. The bidirectional lead screw 211 passes through the moving blocks 213 and is threadedly connected to the moving blocks 213. The moving blocks 213 are slidably connected to the support column 22 along the length direction of the support column 22. Under the limiting effect of the support column 22, when the bidirectional lead screw 211 rotates, the two moving blocks 213 are driven to move closer to or farther from each other.

[0040] Reference Figure 1 and Figure 3The two tensioning blocks 212 are respectively located on both sides of the support column 22, and a hinge rod 214 is provided between the moving block 213 and the tensioning block 212. One end of the hinge rod 214 is hinged to the moving block 213, and the other end is connected to the tensioning block 212. When the cylinder needs to be positioned, the clamping seat 2 drives the two tensioning blocks 212 into the cylinder through the support column 22. At this time, the two tensioning blocks 212 are close to the support column 22, and the two-way lead screw 211 is rotated so that the two-way lead screw 211 drives the two moving blocks 213 to approach each other. When the moving block 213 moves, the hinge rod 214 pushes the tensioning block 212 away from the support column 22. When the two tensioning blocks 212 are in contact with the inner wall of the cylinder, the cylinder is positioned, thereby limiting the rotation of the cylinder in the circumferential direction.

[0041] Reference Figure 1 and Figure 3 When the cylinder needs to be adjusted, the worm 231 is rotated so that the worm 231 drives the support column 22 to rotate through the meshing action with the worm wheel 221, and the support column 22 drives the cylinder to rotate through the hinge rod 214 and the tension block 212, thereby facilitating the adjustment of the cylinder. The cylinder is connected to the support wheel 121 in a rolling manner. When the cylinder rotates, the support wheel 121 is driven to rotate, which is beneficial to reducing the friction between the cylinder and the support rod 12. At the same time, the support wheel 121 isolates the cylinder from the support rod 12, which is beneficial to reducing the probability of interference between the protruding structure on the outside of the cylinder and the support rod 12 when the cylinder rotates.

[0042] Reference Figure 1 and Figure 4 The limit plate 3 is located at the upper end of the clamping seat 2, and the limit plate 3 is arc-shaped and coaxial with the central axis. A sliding block 36 is fixedly connected to one end of the limit plate 3 along the length direction. A sliding groove 24 is provided at the upper end of the clamping seat 2 along the length direction. The sliding block 36 is located in the sliding groove 24 and is slidably connected to the clamping seat 2 along the length direction of the sliding groove 24. The clamping seat 2 is provided with a threaded rod 241 along the length direction of the sliding groove 24, and the threaded rod 241 passes through the sliding block 36 and is threadedly connected to the sliding block 36.

[0043] Reference Figure 1 and Figure 4 The clamping seat 2 limits the sliding block 36 through the threaded rod 241, so that when the clamping seat 2 moves, the sliding block 36 drives the limiting plate 3 to move. When the cylinder is clamped by the clamping seat 2, the limiting plate 3 is above the cylinder. When the threaded rod 241 is rotated, the threaded rod 241 pushes the limiting plate 3 to move along the length direction of the slide groove 24 through the sliding block 36, thereby facilitating the adjustment of the position of the limiting plate 3.

[0044] Reference Figure 4 and Figure 5The limit plate 3 is slidably connected with a positioning block 31 along the length direction, and a positioning spring is provided between the limit plate 3 and the positioning block 31. One end of the positioning spring is fixedly connected with the positioning block 31, and the other end is fixedly connected with the limit plate 3. When the positioning spring is in a natural state, the positioning block 31 is located directly above the limit plate 3. A guide groove 311 is opened in the direction perpendicular to the central axis of the positioning block 31. The inner diameter of the guide groove 311 is larger than the outer diameter of the oil nozzle. A plurality of positioning plates 35 are provided at the lower end of the positioning block 31. The positioning plates 35 are arranged circumferentially along the guide groove 311. The positioning plates 35 are parallel to the length direction of the guide groove 311. The positioning plates 35 pass through the positioning blocks 31 along their own length direction and are slidably connected with the positioning blocks 31. When the positioning blocks 31 move, the positioning plates 35 are driven to move.

[0045] Reference Figure 4 and Figure 5 The positioning plate 35 is provided with a plurality of evenly arranged slots 355 along the length direction, and the positioning block 31 is slidably connected with a block 313 adapted to the slot 355 in the direction of approaching or moving away from the positioning plate 35. When the block 313 is inserted into the slot 355, it fits with the inner wall of the slot 355. At this time, the positioning block 31 limits the displacement of the positioning plate 35 along the length direction through the block 313. In the initial state, the positioning plate 35 is located near the cylinder barrel.

[0046] Reference Figure 4 and Figure 5 In the initial state, the guide groove 311 of the positioning block 31 is aligned with the position of the cylinder barrel where the oil nozzle needs to be welded. When placing the oil nozzle, put the oil nozzle into the guide groove 311, and make the side of the oil nozzle with the arc groove aligned with the cylinder barrel. The oil nozzle contacts the cylinder barrel under the guidance of the guide groove 311 and the positioning plate 35. Under the action of gravity, the arc groove of the oil nozzle fits the outer circle of the cylinder barrel. An adjustment rod 351 is vertically arranged at the lower end of the positioning plate 35. The adjustment rod 351 passes through the positioning plate 35 along the axial direction and is slidably connected to the positioning plate 35. When the positioning plate 35 moves, the adjustment rod 351 is driven to move.

[0047] Reference Figure 4 and Figure 5, the ends of all the adjusting rods 351 that are close to each other are fixedly connected with abutment blocks 352, and when the adjusting rods 351 move, the abutment blocks 352 are driven to move. An elastic member 353 is provided at the end of the adjusting rod 351 away from the abutment blocks 352, and the elastic member 353 is a spring, one end of the spring is fixedly connected to the positioning plate 35, and the other end is fixedly connected to the adjusting rod 351. When the elastic member 353 is in a natural state, there is a gap between the abutment blocks 352 and the positioning plate 35. When the oil nozzle fits the outer circle of the cylinder barrel, multiple abutment blocks are arranged circumferentially along the abutment blocks 352, and at this time, all the abutment blocks 352 cooperate to limit the oil nozzle. At the same time, if the position of the oil nozzle is deviated from the welding position, the operator moves the adjusting rod 351 from the outside, so that the adjusting rod 351 pushes the oil nozzle to move through the abutment blocks 352.

[0048] Reference Figure 4 and Figure 5 The adjusting rod 351 is threadedly connected with an abutting ring 354, which is located between the abutting block 352 and the positioning plate 35. When the abutting ring 354 is rotated, the abutting ring 354 moves along the length direction of the adjusting rod 351. All abutting blocks 352 are arranged opposite to each other, and the abutting rod abuts against a side of the positioning plate 35 close to the abutting block 352, thereby limiting the tendency of the abutting block 352 to approach the positioning plate 35, thereby facilitating the adjustment of the distance between the two opposing abutting blocks 352.

[0049] Reference Figure 4 and Figure 5 The upper end of the positioning block 31 is vertically slidably connected with a driving ring 32, and a moving ring 33 is arranged outside the driving ring 32. The moving ring 33 is rotatably connected with the positioning block 31, and the driving ring 32 is threadedly connected with the moving ring 33. The positioning block 31 limits the displacement of the moving ring 33 along the axial direction. When the moving ring 33 is rotated, the moving ring 33 pushes the driving ring 32 to move along the axial direction. The positioning block 31 is provided with a plurality of mutually parallel clamping rods 34 along the circumference of the guide groove 311, and the clamping rods 34 are arranged along the length direction of the guide groove 311. A swing rod 312 is arranged between the clamping rod 34 and the positioning block 31, and the same clamping rod 34 is provided with at least two swing rods 312, one end of the swing rod 312 is vertically hinged with the clamping rod 34, and the other end is hinged with the positioning block 31, and all the swing rods 312 are inclined from top to bottom to a position away from the driving ring 32.

[0050] Reference Figure 4 and Figure 5The driving ring 32 is vertically hinged with a push rod 331. When the driving ring 32 moves, the push rod 331 is driven to move. The end of the push rod 331 away from the driving ring 32 is vertically hinged with the clamping rod 34. The push rod 331 is inclined from top to bottom toward the direction close to the axis of the driving ring 32. In the initial state, the driving ring 32 is at a position away from the clamping seat 2. At this time, all the clamping rods 34 are at a position away from the axis of the driving ring 32, so that the oil nozzle is avoided when the oil nozzle is placed.

[0051] Reference Figure 1 and Figure 5 After the oil nozzle is placed on the outer cylinder, the oil nozzle is between the clamping rod 34 and the clamping seat 2. At this time, the movable ring 33 is rotated so that the movable ring 33 drives the driving ring 32 to approach the oil nozzle. When the driving ring 32 moves, the clamping rod 34 is driven to move through the push rod 331, so that the clamping rod 34 approaches the oil nozzle and clamps and positions the oil nozzle.

[0052] Reference Figure 1 and Figure 5 When positioning the oil nozzle, the oil nozzle is pre-positioned by any two opposing adjustment rods 351. After the oil nozzle is pressed, the clamping of the adjustment rod 351 on the oil nozzle is released, and the positioning plate 35 is moved upward, so that the positioning plate 35 drives the adjustment rod 351 away from the cylinder barrel, thereby expanding the welding operation space between the oil nozzle and the cylinder barrel, and facilitating the welding of the oil nozzle by the welding gun. When welding the oil nozzle, the oil nozzle is first adjusted by the guide groove 311 of the positioning block 31, the positioning plate 35 and the adjustment rod 351, so that the oil nozzle fits the outer edge of the cylinder barrel, and then the oil nozzle is pressed and positioned by the clamping rod 34, which reduces the probability of secondary positioning caused by the deflection of the oil nozzle after positioning, and is conducive to improving the convenience of welding the oil nozzle.

[0053] The implementation principle of a hydraulic cylinder welding device based on cylinder positioning in an embodiment of the present application is as follows: after the cylinder is placed in the positioning groove 11, the support seat 1 supports the cylinder through the support rod 12 and the support wheel 121, and then the clamping seat 2 is moved toward the cylinder. When the tensioning block 212 enters the cylinder, the bidirectional screw 211 is rotated so that the moving block 213 drives the tensioning block 212 to move through the hinge rod 214, and the two tensioning blocks 212 cooperate to position the cylinder. After the clamping seat 2 positions the cylinder barrel by the tensioning block 212, the limit plate 3 drives the positioning block 31 to move above the cylinder barrel, and the guide groove 311 is aligned with the position where the oil nozzle needs to be welded on the cylinder barrel, and the oil nozzle is placed above the cylinder barrel along the guide groove 311. When the oil nozzle contacts the cylinder barrel, under the action of gravity, the arc-shaped groove of the oil nozzle fits the outer circle of the cylinder barrel. At this time, the position of the oil nozzle is fine-tuned and the oil nozzle is pre-positioned by the adjusting rod 351, and then the moving ring 33 is rotated so that the moving ring 33 drives the driving ring 32 close to the oil nozzle. When the driving ring 32 moves, the pressing rod 34 is driven to move by the push rod 331. Under the limiting action of the rocker arm 312, the pressing rod 34 moves toward the support seat 1 synchronously when it approaches the axis of the moving ring 33, and the oil nozzle is clamped and positioned when the lower end of the pressing rod 34 contacts the oil nozzle. Before positioning the oil nozzle, the installation position of the oil nozzle is confirmed in advance, which helps to reduce the probability of the oil nozzle being tilted after positioning, reduces the probability of secondary adjustment of the oil nozzle, and helps to improve the welding convenience of the oil nozzle.

[0054] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A hydraulic cylinder welding device based on cylinder barrel positioning, comprising a support seat (1), wherein the upper end of the support seat (1) is provided with a positioning groove (11) for placing the cylinder barrel, and characterized in that: Also includes: The clamping seat (2) is located at one end of the positioning groove (11) along the length direction and is slidably connected to the support seat (1) along the length direction of the positioning groove (11). The clamping seat (2) is provided with a positioning component (21). When the cylinder barrel is located in the positioning groove (11), the clamping seat (2) positions the cylinder barrel through the positioning component (21); The limiting plate (3) is located at the upper end of the clamping seat (2) and moves with the clamping seat (2). The upper end of the limiting plate (3) is arc-shaped. When the cylinder is located in the positioning groove (11), the limiting plate (3) is coaxial with the cylinder. The limiting plate (3) is slidably connected with a positioning block (31) along the length direction. The positioning block (31) is provided with a guide groove (311) in the direction pointing to the axis of the limiting plate (3). A driving ring (32) is located at the upper end of the positioning block (31) and is slidably connected to the positioning block (31) along the length direction of the guide groove (311). The upper end of the positioning block (31) is rotatably connected to a moving ring (33). The moving ring (33) is sleeved on the outer side of the driving ring (32) and is threadedly connected to the driving ring (32). A clamping rod (34) is vertically arranged in the guide groove (311), and a plurality of swing rods (312) are arranged between the clamping rod (34) and the positioning block (31). One end of the swing rod (312) is vertically hinged to the positioning block (31), and the other end is vertically hinged to the clamping rod (34). A push rod (331) corresponding to the clamping rod (34) is vertically hinged to the driving ring (32). One end of the push rod (331) away from the driving ring (32) is vertically hinged to the corresponding clamping rod (34). A plurality of positioning plates (35) are provided at the lower end of the positioning block (31), and the plurality of positioning plates (35) are arranged circumferentially along the guide groove (311). All positioning plates (35) are vertically provided with adjustment rods (351), and the adjustment rods (351) pass through the positioning plates (35) and are slidably connected to the positioning plates (35) along the axial direction. An abutment block (352) is fixedly provided on the adjustment rod (351) in the direction close to the axis of the drive ring (32). An elastic member (353) is provided between the adjustment rod (351) and the positioning plate (35), and when the elastic member (353) is in a natural state, a gap is provided between the abutment block (352) and the positioning plate (35); The positioning assembly (21) comprises a bidirectional lead screw (211), two tensioning blocks (212) and two moving blocks (213); a support column (22) is provided at the upper end of the clamping seat (2); the support column (22) is coaxial with the limit plate (3); the bidirectional lead screw (211) is arranged along the length direction of the support column (22) and is threadedly connected to the support column (22); the two moving blocks (213) are respectively located at two ends of the bidirectional lead screw (211) and are threadedly connected to the bidirectional lead screw (211); the moving block (213) is slidably connected to the support column (22) along the length direction of the support column (22); the two tensioning blocks (212) are respectively located on both sides of the support column (22) along the width direction; a hinged rod (214) is provided between the moving block (213) and the tensioning block (212); one end of the hinged rod (214) is hinged to the moving block (213), and the other end is hinged to the tensioning block (212).

2. A hydraulic cylinder welding device based on cylinder barrel positioning according to claim 1, characterized in that: An end of the adjusting rod (351) close to the abutment block (352) is provided with an external thread, and the adjusting rod (351) is threadedly connected with an abutment ring (354), which is located on a side of the positioning plate (35) away from the elastic member (353) and abuts against the positioning plate (35).

3. The hydraulic cylinder welding device based on cylinder barrel positioning according to claim 1 is characterized in that: The upper ends of all the positioning plates (35) pass through the positioning blocks (31) and are slidably connected to the positioning blocks (31), and the positioning plates (35) are provided with a plurality of slots (355) along the length direction, and the upper ends of the positioning blocks (31) are slidably connected to the slots (355) along a direction perpendicular to the positioning plates (35).

4. The hydraulic cylinder welding device based on cylinder barrel positioning according to claim 1 is characterized in that: A support tube (23) is fixedly provided at the upper end of the support seat (1); the support tube (23) is sleeved on the outside of the support column (22) and is rotatably connected to the support column (22); a worm wheel (221) is coaxially fixed to the outside of the support column (22); and the support tube (23) is rotatably connected to a worm (231) meshing with the worm wheel (221).

5. The hydraulic cylinder welding device based on cylinder barrel positioning according to claim 4 is characterized in that: The end of the limit plate (3) along the length direction is fixedly connected with a sliding block (36); the upper end of the clamping seat (2) is provided with a sliding groove (24) corresponding to the sliding block (36) along the length direction; the sliding block (36) is located in the sliding groove (24) and is slidably connected to the clamping seat (2) along the length direction of the sliding groove (24); the clamping seat (2) is rotatably connected with a threaded rod (241) along the length direction of the sliding groove (24); the threaded rod (241) passes through the sliding block (36) and is threadedly connected to the sliding block (36).

6. The hydraulic cylinder welding device based on cylinder barrel positioning according to claim 1 is characterized in that: A plurality of support rods (12) are arranged in the positioning groove (11), and the support rods (12) are arranged along the circumference of the positioning groove (11). Both ends of the support rods (12) along the length direction are fixedly connected with sliding blocks (13). The clamping seat (2) is provided with a movable groove (14) connected with the positioning groove (11) in a direction close to or away from the axis of the limiting plate (3). The sliding block (13) is located in the movable groove (14) and is slidably connected with the clamping seat (2) along the length direction of the movable groove (14). The support rod (12) is provided with a plurality of support wheels (121) along the length direction. The support wheels (121) are rotatably connected with the support rod (12). The clamping seat (2) is detachably connected with a support plate (15). The support plate (15) is located on the side of all the support rods (12) away from the axis of the limiting plate (3) and contacts with all the support rods (12).

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