Hydraulic oil cylinder outer pipe cylinder barrel clamping device

Abstract

The invention relates to the technical field of hydraulic oil cylinder outer pipe cylinder barrel welding, and discloses a hydraulic oil cylinder outer pipe cylinder barrel clamping device which comprises a base which is of a rectangular base body structure, and two first lifting columns are installed at the upper end of the base. According to the hydraulic oil cylinder outer pipe cylinder barrel clamping device, the inner pipe limiting assembly and the outer pipe clamping assembly are arranged in the device, the clamping area of the hydraulic oil cylinder outer pipe cylinder barrel is increased, the angle of the outer pipe clamping assembly is adjusted along with rotation of an electric drive rotary table, and the height of the outer pipe clamping assembly is adjusted through a lifting column pair; clamping of a C-shaped structure and the outer layer of a cylinder barrel of the outer pipe of the hydraulic oil cylinder is adjusted through pushing of the second connecting frame so as to adapt to different lengths and shapes, and the outer pipe can be firmly clamped in multiple directions in cooperation with magnetic attraction of a magnetic attraction plate driven by a mechanical arm; and displacement or shaking of the cylinder barrel in the welding process is effectively prevented, and the accuracy of the welding position is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic cylinder outer tube cylinder welding, in particular to a hydraulic cylinder outer tube cylinder clamping device. Background Art

[0002] The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion. It has a simple structure and reliable operation. When using it to achieve reciprocating motion, the deceleration device can be eliminated, and there is no transmission gap, and the movement is smooth. Therefore, it is widely used in the hydraulic systems of various machines. The welding quality requirements of the outer tube of the hydraulic cylinder are high. The position of the cylinder must be accurate and stable during the welding process, otherwise it will affect the quality of the weld. The traditional welding process has a relatively simple positioning and clamping method for the cylinder during welding, which is difficult to meet the requirements of high-precision welding. For example: Traditional clamping devices usually use simple positioning blocks or fixtures. The contact area between the positioning blocks and the cylinder is small. During the welding process between the cylinder and the side flange, the position of the cylinder cannot be accurately controlled. In addition, when clamping the cylinder, the traditional clamping device is prone to uneven clamping force. This may cause uneven force on the cylinder during welding and affect the welding quality.

[0003] In view of the above problems, it is urgently necessary to carry out innovative design based on the original hydraulic cylinder outer tube cylinder welding fixture. Summary of the invention

[0004] The purpose of the present invention is to provide a hydraulic cylinder outer tube cylinder clamping device to solve the problem that the position of the cylinder cannot be accurately controlled by using a simple positioning block or fixture proposed in the above background technology, and the traditional clamping device is prone to uneven clamping force when clamping the cylinder, which may cause uneven force on the cylinder during welding and affect the welding quality.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a hydraulic oil cylinder outer tube cylinder clamping device, comprising a base, which is arranged as a rectangular base structure, two lifting columns 1 are installed on the upper end of the base, and a support column is sleeved on the rod body of the output end of the lifting column 1, and a connecting frame 1 is arranged at the connection between the support column and the lifting column 1, and a top plate is installed on the top of the support column, forming a main outer frame device for cooperating with the welding work of the hydraulic oil cylinder outer tube cylinder; Two electric drive turntables are arranged on the upper end of the base, and the bottom end of a lifting column is installed on the upper end of the electric drive turntable, a C-shaped opening is arranged on one side wall of a mounting connection frame which is sleeved on the outer layer of the lifting column and the support column, and the connection between the lifting column and the connection frame is rotatably connected, and a connection frame 2 is installed on the rod body at the output end of the lifting column 1, the top plate is penetrated by the output end of the lifting column 2, and the output end of the lifting column 2 is vertically downward, and two telescopic columns are arranged at right angles on the outer wall of the connection frame 2, and the two telescopic columns of the connection frame 2 are connected to a spherical connector on the outer wall of a clamping seat; A circular bracket is installed at the output end of the second lifting column, and a positioning base is arranged below the second lifting column. Small hydraulic columns are evenly arranged at the upper end of the positioning base, and a flexible plate is installed at the output end of the small hydraulic column. The flexible plate is arranged in a ring structure, and the flexible plate is installed above the positioning base. An inner tube limit assembly is respectively installed at the upper end of the positioning base and the circular bracket of the second lifting column, and the inner tube limit assembly abuts against the inner walls of the upper and lower ports of the outer tube cylinder of the hydraulic cylinder, so as to assist the stability of the outer tube cylinder of the hydraulic cylinder during welding work above the base; The clamping seat is configured as a C-shaped structure, and an electric-driven roller rod is equidistantly installed on the inner wall of the clamping seat, a rubber ring is sleeved on the outer wall of the electric-driven roller rod, and the electric-driven roller rod is rotatably connected in the clamping seat, a mechanical arm is respectively installed on the upper end surface and the lower end surface of the clamping seat, and one end of the mechanical arm is connected to the magnetic suction plate by a spherical connector, the connecting frame 2, the clamping seat, the electric-driven roller rod, the mechanical arm and the magnetic suction plate constitute an outer tube clamping assembly, and the outer tube clamping assembly limits the outer wall surface of the outer tube cylinder barrel of the hydraulic cylinder.

[0006] By adopting the above technical solution, an inner tube limiting assembly and an outer tube clamping assembly are provided to cooperate with each other to form an inner and outer double-layer clamping effect, thereby achieving stability in the welding operation of the cylinder barrel and the side flange.

[0007] Preferably, the center of the lifting column 1 is aligned with the center of the electric drive turntable, and the lifting column 1 is a two-stage sliding connection structure.

[0008] By adopting the above technical solution, a lifting column 1 is installed on the upper end of the electric drive turntable to facilitate the rotation and angle adjustment.

[0009] Preferably, the top plate and the base are arranged vertically parallel to each other, and a groove for mounting with the positioning base is provided at the upper end of the base.

[0010] By adopting the above technical solution, the top plate and the base are arranged in parallel, so as to facilitate maintaining the stability of the internal structure.

[0011] Preferably, two inner tube limiting assemblies are provided, and a connecting seat is provided in each inner tube limiting assembly.

[0012] By adopting the above technical solution, two groups of inner tube limit assemblies are provided to clamp and limit the upper and lower ends of the cylinder.

[0013] Preferably, the circular bracket of the second lifting column is connected to a connecting seat provided in the installed inner tube limiting assembly.

[0014] By adopting the above technical solution, the inner tube limiting assembly installed on the circular bracket of the second lifting column is convenient for limiting the upper end of the cylinder.

[0015] Preferably, the connecting seat is configured as a base structure of a circular plate body, and a guide rail is provided at the upper end of each connecting seat, a guide slider frame is provided inside the guide rail, and the guide slider frame is installed inside the rubber sleeve, and a docking tube is provided at the upper end of the rubber sleeve.

[0016] By adopting the above technical solution, the connecting seat provides installation processing for the guide rail.

[0017] Preferably, a micro air pump is installed at the upper end of the butt joint pipe, and a magnetic clamping column 1 and a magnetic clamping column 2 are arranged on the side wall of the butt joint pipe, and two groups of the magnetic clamping column 1 and the magnetic clamping column 2 are arranged respectively.

[0018] By adopting the above technical solution, the contact area with the inner wall of the cylinder is further increased by increasing the number of magnetic clamping columns 1 and magnetic clamping columns 2.

[0019] Preferably, the magnetic clamping column one is composed of a double-layer sleeve rod and an arc-shaped magnetic suction plate, and the inner rod in the double-layer sleeve rod of the magnetic clamping column one passes through the docking tube, and the inner rods in the double-layer sleeve rods of the two magnetic clamping columns one are kept in a clamping state on both sides of the ventilation pipe, the magnetic clamping column two has the same structure as the magnetic clamping column one, and the length of the inner rod of the double-layer sleeve rod of the magnetic clamping column two is shorter than the length of the inner rod of the double-layer sleeve rod of the magnetic clamping column one.

[0020] By adopting the above technical solution, the arc-shaped magnetic suction sheet arranged through the magnetic clamping column 1 and the magnetic clamping column 2 facilitates the precise clamping of the inner wall of the cylinder.

[0021] Preferably, the ventilation pipe is installed in the butt joint tube, and the ventilation pipe connects the micro air pump and the rubber sleeve, and a rod body connected to the magnetic clamping column one and the magnetic clamping column two is provided in the butt joint tube, and the inner rod of the double-layer sleeve rod of the magnetic clamping column one is abutted against the inner rod of the double-layer sleeve rod of the magnetic clamping column two on both sides.

[0022] By adopting the above technical solution, the inner rod of the double-layer sleeve rod moves outward through the magnetic clamping column so that the ventilation pipe is unobstructed as a whole.

[0023] Preferably, the upper end of the positioning base is connected to a connecting seat provided in the installed inner tube limiting assembly.

[0024] By adopting the above technical solution, an inner tube limiting assembly is arranged on the upper end of the positioning base to limit the inner layer of the bottom end part of the cylinder barrel placed vertically.

[0025] Compared with the prior art, the invention has the following beneficial effects: the outer tube cylinder clamping device of the hydraulic oil cylinder: 1. The device is provided with an inner tube limit assembly and an outer tube clamping assembly, which increases the clamping area of ​​the outer tube cylinder of the hydraulic oil cylinder. The outer tube clamping assembly adjusts the angle as the electric drive turntable rotates, so that the positions of the two diagonal outer tube clamping assemblies are staggered, and a reserved opening is provided for the outer tube cylinder to be placed in the device, so that the outer tube cylinder is conveniently placed in the device. In combination with the height adjustment of the outer tube clamping assembly with a lifting column, the outer tube clamping assembly has two functions of rotation and lifting. It can be quickly adjusted according to needs during actual welding. The outer tube clamping assembly is provided on the outer layer through a clamping seat sleeve of a C-shaped structure, and is pushed through the telescopic column of the second connecting frame, so as to adjust the C-shaped structure of the clamping seat to further fit the outer layer of the outer tube cylinder of the hydraulic oil cylinder to achieve precise clamping. After the clamping seat realizes the initial clamping of the cylinder, the telescopic column of the second connecting frame pushes the clamping seat close to the surface of the cylinder to achieve preliminary clamping adjustment to adapt to different lengths and shapes; When the position of the outer tube of the hydraulic cylinder needs to be adjusted, the electric drive roller rods installed equidistantly on the inner wall of the clamping seat start to rotate, so that the rubber rings on the surface of the electric drive roller rods contact the outer wall of the cylinder barrel, and the friction generated by the rotation drives the cylinder barrel to make further position fine adjustments in the clamping seat. The cylinder barrel can be flexibly rotated according to the weld position and welding process requirements, so that the welding part is always at the best welding angle, ensuring uniform weld quality, reducing welding stress concentration, and improving the overall strength and reliability of the hydraulic cylinder; By increasing the number of mechanical arms, the outer tube can be firmly clamped in multiple directions. The mechanical arms are of multi-section structure. When in use, the height of the magnetic suction plate clamping the cylinder can be adjusted by bending the mechanical arms according to the length of the cylinder. At the same time, the spherical connector at the connection between the magnetic suction plate and the mechanical arm has a universal angle adjustment, which cooperates with the magnetic adsorption of the magnetic suction plate driven by the mechanical arm to facilitate the auxiliary magnetic suction plate to clamp close to the outer wall of the cylinder. As the mechanical arm pushes the magnetic suction plate, the clamping force is increased. In addition, since the two groups of outer tube clamping components are arranged diagonally, the magnetic suction plate on the outer wall of the cylinder has a symmetrical clamping force, which effectively prevents the cylinder from displacement or shaking during welding, ensures the accuracy of the welding position, and greatly improves the welding quality. 2. Two groups of inner tube limit assemblies are directly extended into the upper and lower ports of the outer tube of the hydraulic cylinder to achieve stable limitation. One group of inner tube limit assemblies adjusts the entry depth as the lifting column 2 descends, and the lifting and lowering of the lifting column 2 is convenient for cooperating with the outer tube of the hydraulic cylinder with different heights to seal the ports. The sealing effect is achieved through the micro air pump to inflate the rubber sleeve and the magnetic adsorption of the magnetic clamping column 1 and the magnetic clamping column 2, which realizes the close fit and stable clamping of the inner wall of the cylinder, ensures the position accuracy of the cylinder in the vertical direction, further improves the overall welding accuracy, and helps to manufacture high-quality and high-performance hydraulic cylinders. The expansion of the rubber sleeve and the synergistic effect of the arc-shaped magnetic suction sheets of the magnetic clamping column 1 and the magnetic clamping column 2 can easily cope with cylinders of various diameters and lengths, greatly improving the versatility and utilization efficiency of the equipment, and is suitable for the diversified production needs of hydraulic cylinder manufacturers. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall external three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the base, top plate and inner tube limit assembly of the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the base and the inner tube limit assembly installed in the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of installing two sets of outer tube clamping assemblies of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the clamping seat and the mechanical arm of the present invention; Figure 6 It is a schematic diagram of the side-section stereoscopic structure of the connection frame 1 and the support column of the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the mechanical arm and the magnetic suction plate installed in the present invention; Figure 8 It is a schematic diagram of the overall three-dimensional structure of the inner tube limiting assembly of the present invention; Fig. 9 It is a schematic diagram of the internal side cross-section of the three-dimensional structure of the inner tube limiting assembly of the present invention; Fig.10 It is a schematic diagram of the three-dimensional structure of the micro air pump and the magnetic clamping column of the present invention.

[0027] In the figure: 1. Base; 2. Lifting column 1; 3. Connecting frame 1; 4. Support column; 5. Top plate; 6. Lifting column 2; 7. Inner tube limit assembly; 701. Connecting seat; 702. Guide rail; 703. Guide slide frame; 704. Rubber sleeve; 705. Butt joint; 706. Ventilation pipe; 707. Micro air pump; 708. Magnetic clamping column 1; 709. Magnetic clamping column 2; 8. Electric drive turntable; 9. Connecting frame 2; 10. Clamping seat; 11. Electric drive roller rod; 12. Mechanical arm; 13. Magnetic suction plate; 14. Positioning base; 15. Small hydraulic column; 16. Flexible plate. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-Figure 10 The present invention provides a technical solution: a hydraulic cylinder outer tube cylinder clamping device, including a base 1, a lifting column 2, a connecting frame 3, a supporting column 4, a top plate 5, a lifting column 6, an inner tube limit assembly 7, a connecting seat 701, a guide slide rail 702, a guide slider frame 703, a rubber sleeve 704, a butt tube 705, a vent pipe 706, a micro air pump 707, a magnetic clamping column 1 708, a magnetic clamping column 2 709, an electric drive turntable 8, a connecting frame 2 9, a clamping seat 10, an electric drive roller rod 11, a mechanical arm 12, a magnetic suction plate 13, a positioning base 14, a small hydraulic column 15 and a flexible plate 16; The base 1 is a rectangular base structure, two lifting columns 2 are installed on the upper end of the base 1, and a support column 4 is sleeved on the rod body of the output end of the lifting column 2, and a connecting frame 3 is provided at the connection between the support column 4 and the lifting column 2, and a top plate 5 is installed on the top of the support column 4, forming a main external frame device for welding the outer tube of the hydraulic cylinder; Two electric drive turntables 8 are arranged on the upper end of the base 1, and the lower end of the lifting column 2 is installed on the upper end of the electric drive turntable 8. The lifting column 2 and the support column 4 are sleeved with the side wall of the connecting frame 3, and the lifting column 2 and the connecting frame 3 are rotatably connected, and the rod body at the output end of the lifting column 2 is installed with a connecting frame 2 9. The center of the lifting column 2 is aligned with the center of the electric drive turntable 8, and the lifting column 2 is a two-stage sliding connection structure. The top plate 5 is penetrated by the output end of the lifting column 2 6, and the output end of the lifting column 2 6 is vertically downward. The top plate 5 is arranged parallel to the base 1, and the upper end of the base 1 is provided with a groove installed with the positioning base 14. Two telescopic columns are arranged at right angles on the outer wall of the connecting frame 2 9, and the two telescopic columns of the connecting frame 2 9 are connected to a spherical connector on the outer wall of a clamping seat 10; A circular bracket is installed at the output end of the lifting column 2 6, and a positioning base 14 is arranged below the lifting column 2 6, and small hydraulic columns 15 are evenly arranged on the upper end of the positioning base 14, and a flexible plate 16 is installed at the output end of the small hydraulic column 15, and the flexible plate 16 is arranged in a ring structure, and the flexible plate 16 is installed above the positioning base 14; The clamping seat 10 is set as a C-shaped structure, and the inner wall surface of the clamping seat 10 is equidistantly installed with an electric drive roller rod 11, the outer wall surface of the electric drive roller rod 11 is sleeved with a rubber ring, and the electric drive roller rod 11 is rotatably connected in the clamping seat 10, the upper end surface and the lower end surface of the clamping seat 10 are respectively installed with a mechanical arm 12, and one end of the mechanical arm 12 is connected to the magnetic suction plate 13 by a spherical connector, and the connecting frame 9, the clamping seat 10, the electric drive roller rod 11, the mechanical arm 12 and the magnetic suction plate 13 constitute an outer tube clamping assembly, and the outer tube clamping assembly limits the outer wall surface of the outer tube cylinder barrel of the hydraulic oil cylinder; In conjunction with the accompanying drawings Figure 1-Figure 10 As shown, based on the rectangular base 1, the two lifting columns 2 at the upper end thereof can realize flexible adjustment of position and angle through the electric drive turntable 8, the output end of the lifting column 2 can rotate in the groove at the bottom end of the supporting column 4, and the lifting column 2 rotates at the bottom end of the connecting frame 3 at the same time. Since the center of the lifting column 2 is aligned with the center of the electric drive turntable 8 and it is a two-stage sliding connection structure, the lifting column 2 can be driven by the electric drive turntable 8 to not only smoothly lift and lower, but also rotate around the center of the circle, so that it is convenient to stagger the welding position of the cylinder barrel and the side flange. When the outer tube cylinder barrel of the hydraulic cylinder needs to be placed above the base 1 for work, the outer tube clamping assembly is driven to rotate and align through the rotation of the electric drive turntable 8 to form a ring, as shown in FIG. Figure 1As shown, it is convenient to place the outer tube cylinder above the rectangular base 1, wherein the heights among the lifting column 2, the connecting frame 3 and the supporting column 4 are exchanged according to the height of the outer tube cylinder. When in use, the lifting of the output end of the lifting column 2 moves in the hole at the bottom end of the supporting column 4, and the lifting of the output end of the lifting column 2 is used to adjust the height of the installed outer tube clamping assembly. During use, the two outer tube clamping assemblies are dislocated up and down by adjusting the height of the output ends of the two lifting columns 2, so as to increase the clamping area of ​​the outer tube clamping assembly to the outer tube cylinder. The lifting column 2 6 is used to push the inner tube limiting assembly 7 at the output end to be inserted into the outer tube cylinder. After the outer tube cylinder is aligned with the two groups of inner tube limiting assemblies 7, the telescopic column on the outer wall of the connecting frame 2 9 is driven to move, and the C-shaped structure of the pushing clamping seat 10 is convenient for The spherical connector that fits the outer side of the outer tube of the hydraulic cylinder is connected to the telescopic column of the connecting frame 2 9 and the clamping seat 10, and then pushes the clamping seat 10 close to the cylinder to deform and further fit the cylinder, wherein the clamping seat 10 is made of carbon fiber reinforced composite material, which can adapt to some complex stress conditions and deformation requirements while ensuring the rigidity of the plate body. When facing the side welding operation of the outer tube of the hydraulic cylinder whose size and model are greatly different from the size of the clamping seat 10, the clamping operation of the outer tube of the hydraulic cylinder is realized by disassembling and assembling the telescopic column of the connecting frame 2 9 and replacing the clamping seat 10 of the appropriate size, and the clamping seat 10 realizes the initial clamping of the cylinder, and the telescopic column of the connecting frame 2 9 pushes the clamping seat 10 close to the surface of the cylinder to realize the preliminary clamping adjustment; When the position of the outer tube cylinder of the hydraulic oil cylinder needs to be adjusted, the electric drive roller rod 11 installed equidistantly on the inner wall of the clamping seat 10 starts to rotate, so that the rubber ring sleeved on the surface of the electric drive roller rod 11 contacts the outer wall of the cylinder, and the friction force generated by the rotation drives the cylinder to further fine-tune its position in the clamping seat 10, so that it is roughly in a suitable clamping position. At the same time, the rubber ring also plays a role in buffering and protecting the outer wall of the cylinder to avoid scratching the surface of the cylinder. Then the mechanical arm 12 installed on the upper and lower end faces of the clamping seat 10 starts to move, and the position and angle of the magnetic suction plate 13 are flexibly adjusted through the spherical connector to make it tightly adsorbed on the outer wall of the cylinder. The mechanical arm 12 is a three-section structure, and the number of its installations is disassembled according to needs. The mechanical arm 12 is used to cooperate with the magnetic suction plate 13 to clamp the outer wall of the cylinder. The magnetic suction plate 13 uses magnetic force to further enhance the clamping force on the outer wall of the cylinder, and then cooperates with the clamping seat 10 to firmly limit the outer wall of the cylinder from multiple directions. When the outer tube barrel of the hydraulic cylinder is placed on the base 1, the bottom end of the outer tube barrel of the hydraulic cylinder is placed on the upper end of the flexible plate 16. At this time, the small hydraulic column 15 arranged on the upper end of the positioning base 14 is lifted through signal control, thereby pushing up the flexible plate 16 under the action of hydraulic pressure, supporting and buffering the bottom of the cylinder barrel, adapting to cylinder barrels of different diameters and weights, further enhancing the stability of the cylinder barrel during welding, and meeting the operation requirements of the cylinder barrel in different welding scenarios; An inner tube limit assembly 7 is installed at the upper end of the positioning base 14 and the circular bracket of the second lifting column 6, and the inner tube limit assembly 7 is against the inner wall of the upper and lower ports of the outer tube cylinder of the hydraulic oil cylinder, which is used to assist the stability of the outer tube cylinder of the hydraulic oil cylinder during welding work above the base 1; There are two inner tube limiting components 7, and each inner tube limiting component 7 is provided with a connecting seat 701; The circular bracket of the lifting column 2 6 is connected to the connecting seat 701 provided in the installed inner tube limit assembly 7; The upper end of the positioning base 14 is connected to the connecting seat 701 provided in the installed inner tube limiting assembly 7; In conjunction with the accompanying drawings Figure 1-Figure 10 As shown, an inner tube limit assembly 7 is installed at the upper end of the positioning base 14 and the circular bracket of the lifting column 2 6, respectively. Figure 1 and Figure 2 As shown, when the two sets of inner tube limiter assemblies 7 extend into the ports of the outer tube cylinder, the connection seat 701 enters the inner cavity of the outer tube cylinder. When the inner tube limiter assemblies 7 on the upper end of the positioning base 14 work, the height is maintained unchanged. At the same time, the bottom end of the outer tube cylinder abuts against the surface of the flexible plate 16, which is convenient for the flange welding of the side wall of the outer tube cylinder. Among them, the top height of the flexible plate 16 is lower than the top surface height of the connecting seat 701, so that the flexible plate 16 can support the bottom end of the outer tube cylinder. The circular bracket installed at the output end of the lifting column 2 6 is connected to the inner tube limit assembly 7, which can be lifted and lowered according to the height and welding position of the cylinder, and the contact position and strength between the butt joint 705 and the inner wall of the cylinder can be accurately controlled. In cooperation with the positioning base 14, the cylinder is accurately positioned and supported from the upper and lower directions, ensuring that the welding work can be carried out smoothly, efficiently and accurately, improving the welding quality and production efficiency, and also ensuring the safety and reliability of the entire clamping process; The connecting seat 701 is configured as a base structure of a circular plate body, and a guide rail 702 is disposed at the upper end of each connecting seat 701, a guide slider frame 703 is disposed inside the guide rail 702, and the guide slider frame 703 is installed inside the rubber sleeve 704, and a butt joint pipe 705 is disposed at the upper end of the rubber sleeve 704; A micro air pump 707 is installed at the upper end of the butt joint pipe 705, and a magnetic clamping column 1 708 and a magnetic clamping column 2 709 are arranged on the side wall of the butt joint pipe 705, and two groups of magnetic clamping columns 1 708 and magnetic clamping columns 2 709 are arranged respectively; The magnetic clamping column 1 708 is composed of a double-layer sleeve rod and an arc-shaped magnetic suction sheet, and the inner rod of the double-layer sleeve rod of the magnetic clamping column 1 708 passes through the butt joint 705, and the inner rods of the double-layer sleeve rods of the two magnetic clamping columns 1 708 are kept in a clamping state on both sides of the vent pipe 706. The magnetic clamping column 2 709 has the same structure as the magnetic clamping column 1 708, and the inner rod length of the double-layer sleeve rod of the magnetic clamping column 2 709 is shorter than the inner rod length of the double-layer sleeve rod of the magnetic clamping column 1 708; The vent pipe 706 is installed in the butt joint pipe 705, and the vent pipe 706 is connected to the micro air pump 707 and the rubber sleeve 704, and a rod body connected to the magnetic clamping column 1 708 and the magnetic clamping column 2 709 is arranged in the butt joint pipe 705, and the inner rod of the double-layer sleeve rod of the magnetic clamping column 1 708 and the inner rod of the double-layer sleeve rod of the magnetic clamping column 2 709 are abutted on both sides; In conjunction with the accompanying drawings Figure 1-Figure 10 As shown, the guide rail 702 provided in the connecting seat 701 cooperates with the guide slider frame 703 to slide outward when the rubber sleeve 704 expands, wherein the top of the four guide slider frames 703 is provided with a rod body connected to the inner layer of the rubber sleeve 704, as shown in FIG. Fig. 9 As shown, it is used to increase the stability of the connection between the guide slider frame 703 and the rubber sleeve 704. The expansion of the rubber sleeve 704 is inflated by a micro air pump 707. When the butt-joint pipe 705 enters the inner cavity of the outer tube cylinder of the hydraulic oil cylinder as a whole, the arc-shaped magnetic suction pieces of the magnetic clamping column 1 708 and the magnetic clamping column 2 709 are close to the inner wall of the outer tube cylinder of the hydraulic oil cylinder, and are adsorbed on the inner wall of the cylinder through magnetic force, thereby further enhancing the clamping force on the inner wall of the cylinder, ensuring the stability of the position of the cylinder in the vertical direction, and preventing it from occurring during the welding process. It moves up and down to ensure the overall stability and welding accuracy of the cylinder during welding. At this time, the inner rod of the double-layer sleeve rod of the magnetic clamping column 708 moves outward with the arc-shaped magnetic suction piece. At this time, the ventilation pipe 706 is opened to connect the rubber sleeve 704 and the micro air pump 707. The opening and closing of the micro air pump 707 is controlled by an electrical signal. The micro air pump 707 uses a timed inflation method to inflate the rubber sleeve 704. At this time, the rubber sleeve 704 expands and fits the inner wall of the cylinder more closely, thereby realizing the preliminary positioning and sealing of the inner wall of the cylinder.

[0030] Working principle: When using the outer tube cylinder clamping device of the hydraulic oil cylinder, firstly, two lifting columns 1-2 realize flexible adjustment of the angle of the installed outer tube clamping assembly through the electric drive turntable 8. During the rotation of the electric drive turntable 8, the lifting column 1-2 drives the outer tube clamping assembly connected thereto to change its position. The electric drive turntable 8 rotates so that the aligned position of the two outer tube clamping assemblies is opened outward, leaving the middle position of the device. After the cylinder is placed above the flexible plate 16, the electric drive turntable 8 pushes the outer tube clamping assembly to rotate, and the angle and speed of the outer tube clamping assembly are adjusted as the cylinder is placed, so that the cylinder is conveniently placed into the device from the opening reserved by the two outer tube clamping assemblies. The telescopic column of the connecting frame 2-9 in the outer tube clamping assembly contracts so that the clamping seat 10 expands outward to enlarge the opening position, so that the cylinder is conveniently placed into the device. Two groups of inner tube limit assemblies 7 extend into the inner layers of the upper and lower ends of the outer tube barrel of the hydraulic cylinder respectively. The magnetic clamping column 1 708 and the magnetic clamping column 2 709 are magnetically adsorbed on the inner wall of the barrel through the arc-shaped magnetic suction sheet. At this time, the inner rods of the double-layer sleeves of the magnetic clamping column 1 708 and the magnetic clamping column 2 709 extend outward. At this time, the ventilation pipe 706 is opened. As the micro air pump 707 inflates the rubber sleeve 704, the rubber sleeve 704 expands and pushes the guide slide frame 703 in the guide rail 702 to slide to increase the contact surface with the inner wall of the cylinder barrel, and at the same time realizes the preliminary positioning and sealing of the inner wall of the cylinder barrel, ensuring the stability of the vertical position of the cylinder barrel and preventing it from moving up and down during welding, thereby ensuring the overall stability and welding accuracy of the cylinder barrel during welding; When it is necessary to clamp the outer tube of the hydraulic cylinder, the telescopic column on the outer wall of the connecting frame 2 9 is activated to push the clamping seat 10 toward the outer wall of the cylinder to achieve preliminary adjustment of the cylinder clamping. The direction of the cylinder is adjusted by rotating the electric drive roller rod 11. When the mechanical arm 12 is in motion, the position and angle of the magnetic suction plate 13 are flexibly adjusted through the spherical connector to make it tightly adsorbed on the outer wall of the cylinder to prevent radial displacement and shaking during welding, thereby ensuring the accuracy of the welding position.

[0031] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A hydraulic cylinder outer tube clamping device, comprising: A base (1) is arranged in a rectangular base structure, two lifting columns (2) are mounted on the upper end of the base (1), a support column (4) is sleeved on the rod body at the output end of the lifting column (2), and a connecting frame (3) is arranged at the connection between the support column (4) and the lifting column (2), a top plate (5) is mounted on the top end of the support column (4), and a main external frame device is constructed to cooperate with the welding work of the outer tube cylinder of the hydraulic cylinder; The invention is characterized in that: two electric drive turntables (8) are arranged on the upper end of the base (1), and the lower end of the lifting column (2) is installed on the upper end of the electric drive turntable (8), the lifting column (2) and the support column (4) are sleeved with a side wall of a connecting frame (3) having a C-shaped opening, and the connection between the lifting column (2) and the connecting frame (3) is rotatably connected, and the rod body at the output end of the lifting column (2) is installed with a connecting frame (9), the top plate (5) is penetrated by the output end of the lifting column (6), and the output end of the lifting column (6) is vertically downward, and the outer wall of the connecting frame (9) is provided with two telescopic columns in a right angle direction, and the two telescopic columns of the connecting frame (9) are connected to a spherical connector on the outer wall of a clamping seat (10); A circular bracket is installed at the output end of the second lifting column (6), and a positioning base (14) is arranged below the second lifting column (6). Small hydraulic columns (15) are evenly arranged on the upper end of the positioning base (14), and a flexible plate (16) is installed at the output end of the small hydraulic column (15). The flexible plate (16) is arranged in an annular structure, and the flexible plate (16) is installed above the positioning base (14). An inner tube limit assembly (7) is installed at the upper end of the positioning base (14) and the circular bracket of the second lifting column (6), respectively, and the inner tube limit assembly (7) abuts against the inner walls of the upper and lower ports of the outer tube barrel of the hydraulic cylinder, so as to assist the stability of the outer tube barrel of the hydraulic cylinder during welding work above the base (1); The clamping seat (10) is configured as a C-shaped structure, and the inner wall surface of the clamping seat (10) is equidistantly mounted with electric drive rollers (11), the outer wall surface of the electric drive rollers (11) is sleeved with a rubber ring, and the electric drive rollers (11) are rotatably connected in the clamping seat (10), the upper end surface and the lower end surface of the clamping seat (10) are respectively mounted with mechanical arms (12), and one end of the mechanical arm (12) is connected to a magnetic suction plate (13) by a spherical connector, the second connecting frame (9), the clamping seat (10), the electric drive rollers (11), the mechanical arm (12) and the magnetic suction plate (13) constitute an outer tube clamping assembly, and the outer tube clamping assembly limits the outer wall surface of the outer tube barrel of the hydraulic oil cylinder.

2. A hydraulic cylinder outer tube clamping device according to claim 1, characterized in that: The center of the lifting column 1 (2) is aligned with the center of the electric drive turntable (8), and the lifting column 1 (2) is a two-stage sliding connection structure.

3. A hydraulic cylinder outer tube clamping device according to claim 1, characterized in that: The top plate (5) and the base (1) are arranged vertically and parallel to each other, and the upper end of the base (1) is provided with a groove for mounting with the positioning base (14).

4. The outer tube clamping device of a hydraulic cylinder according to claim 1, characterized in that: Two inner tube limiting components (7) are provided, and each inner tube limiting component (7) is provided with a connecting seat (701).

5. A hydraulic cylinder outer tube clamping device according to claim 4, characterized in that: The circular bracket of the second lifting column (6) is connected to a connecting seat (701) provided in the installed inner tube limiting assembly (7).

6. The outer tube clamping device of a hydraulic cylinder according to claim 4, characterized in that: The connecting seat (701) is configured as a base structure of a circular plate body, and a guide rail (702) is provided at the upper end of each connecting seat (701), a guide slider frame (703) is provided inside the guide rail (702), and the guide slider frame (703) is installed inside the rubber sleeve (704), and a butt joint pipe (705) is provided at the upper end of the rubber sleeve (704).

7. A hydraulic cylinder outer tube clamping device according to claim 6, characterized in that: A micro air pump (707) is installed at the upper end of the butt joint tube (705), and a magnetic clamping column 1 (708) and a magnetic clamping column 2 (709) are arranged on the side wall surface of the butt joint tube (705), and two groups of the magnetic clamping column 1 (708) and the magnetic clamping column 2 (709) are arranged respectively.

8. The outer tube clamping device of a hydraulic cylinder according to claim 7, characterized in that: The magnetic clamping column one (708) is composed of a double-layer sleeve rod and an arc-shaped magnetic suction plate, and the inner rod in the double-layer sleeve rod of the magnetic clamping column one (708) passes through the docking tube (705), and the inner rods in the double-layer sleeve rods of the two magnetic clamping columns one (708) are kept in a clamping state on both sides of the ventilation pipe (706). The magnetic clamping column two (709) has the same structure as the magnetic clamping column one (708), and the length of the inner rod of the double-layer sleeve rod of the magnetic clamping column two (709) is shorter than the length of the inner rod of the double-layer sleeve rod of the magnetic clamping column one (708).

9. A hydraulic cylinder outer tube clamping device according to claim 8, characterized in that: The ventilation pipe (706) is installed in the butt joint pipe (705), and the ventilation pipe (706) is connected to the micro air pump (707) and the rubber sleeve (704), and a rod body connected to the magnetic clamping column 1 (708) and the magnetic clamping column 2 (709) is arranged in the butt joint pipe (705), and the inner rods of the double-layer sleeve rods of the magnetic clamping column 1 (708) are abutted against the inner rods of the double-layer sleeve rods of the magnetic clamping column 2 (709) on both sides.

10. The outer tube clamping device of a hydraulic cylinder according to claim 4, characterized in that: The upper end of the positioning base (14) is connected to a connecting seat (701) provided in the installed inner tube limiting assembly (7).

Images