Hydraulic oil cylinder hinged shaft welding device

Abstract

The utility model relates to the technical field of hydraulic oil cylinders, and discloses a hydraulic oil cylinder hinged shaft welding device which comprises an upper pressing plate and a lower pressing plate which are symmetrically arranged up and down, at least four vertical stand columns are arranged between the upper pressing plate and the lower pressing plate, threads are arranged on the stand columns, and the distance between the upper pressing plate and the lower pressing plate is adjusted through nuts. The upper pressing plate and the lower pressing plate are provided with through holes which are opposite to each other and are used for placing a hinged shaft; positioning blocks used for fixing a cylinder barrel are symmetrically arranged on the two sides of the center line of the lower pressing plate; the lower pressing plate is provided with at least two groups of positioning blocks; the center of the through hole is located on the center line of the lower pressing plate, and a fastening structure used for fixing the hinged shaft is arranged at the position of the through hole of the lower pressing plate. According to the utility model, the upper pressing plate and the lower pressing plate which are symmetrical up and down are innovatively arranged, and accurate positioning and the like of the hinged shaft welded on the cylindrical cylinder barrel are realized through positioning parts such as the upright post, the positioning block and the through hole.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic oil cylinders, in particular to a hydraulic oil cylinder hinge shaft welding device. Background Art

[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). When using it to achieve reciprocating motion, the deceleration device can be eliminated, there is no transmission gap, and the motion is smooth, so it is widely used in the hydraulic systems of various machines. A hydraulic cylinder usually consists of a cylinder barrel and a cylinder head, a piston and a piston rod, a sealing device, a buffer device and a hinge shaft, among which the hinge shaft is fixedly installed on the outside of the cylinder barrel.

[0003] In the prior art, hinge shafts are usually required to be welded to the outer wall of the cylinder in strict accordance with the designed position and angle. At the same time, the relative positions of different hinge shafts are required to be accurate to obtain good cylinder quality. However, since the cylinder is round, when welding multiple hinge shafts on its outer wall, the relative positions of the hinge shafts are difficult to determine, which easily leads to deviations, and thus leads to problems such as inaccurate positions of the welded hinge shafts.

[0004] The prior art discloses a tool for oil cylinder welding positioning, comprising a slideway, a control button being fixed on the surface of the slideway, a slide plate being sleeved on the surface of the slideway, and the slide plate and the control button slidingly cooperate with each other, a fixed plate being fixed on the surface of the slide plate, and a clamping disk being rotatably connected to one side of the fixed plate, a collecting mechanism being arranged below the slideway, and a collecting box, a fixed foot and a positioning assembly being included in the collecting mechanism, a centering clamping mechanism being arranged on the surface of the clamping disk, and the centering clamping mechanism being composed of a turntable and a clamping assembly, a rotating mechanism being arranged between the fixed plate and the clamping disk, and a driven gear and a driving assembly being arranged in the rotating mechanism. The prior art discloses a cylinder seat and cylinder tube welding device, comprising a supporting frame, a positioning mechanism and a welding mechanism, the positioning mechanism comprising a first positioning component for fixing the cylinder seat and a second positioning component for fixing the cylinder tube, the first positioning component comprising a turntable fixed at one end of the supporting frame, a first driving member for driving the turntable to rotate, and a plurality of claws fixed on the turntable, the claws can move along the circumference of the turntable to clamp or unlock the cylinder seat, the second positioning component comprises a first support and a second support slidably arranged on the supporting frame, the second support is located between the first support and the turntable, one end of the cylinder tube can be connected to the first support, and the second support can abut against the bottom of the cylinder tube.

[0005] The above-mentioned prior art fails to effectively solve the problems of positioning, fixing, and alignment during hinge shaft welding, and fails to solve the problems of welding accuracy and low welding efficiency. Utility Model Content

[0006] The utility model is to overcome the technical problems existing in the prior art and is a hydraulic cylinder hinge shaft welding device.

[0007] In order to solve the above technical problems, the technical solution of the utility model is as follows:

[0008] A hydraulic cylinder hinge shaft welding device, comprising an upper pressing plate and a lower pressing plate arranged symmetrically in the upper and lower directions, at least four vertical columns are arranged between the upper pressing plate and the lower pressing plate, the columns are provided with threads and the distance between the upper pressing plate and the lower pressing plate is adjusted by nuts; the upper pressing plate and the lower pressing plate are provided with through holes facing each other for placing the hinge shaft; the lower pressing plate is symmetrically provided with positioning blocks for fixing the cylinder barrel on both sides of the center line; the lower pressing plate is provided with at least two groups of the positioning blocks; the center of the through hole is located on the center line of the lower pressing plate

[0009] A fastening structure for fixing the hinge shaft is provided at the through hole of the lower pressing plate.

[0010] Furthermore, the upper pressing plate and the lower pressing plate are respectively provided with at least one set of through holes facing each other for placing the hinge shaft.

[0011] Furthermore, the positioning block is composed of two blocks, and the blocks are respectively located on both sides of the center line of the lower pressing plate and are equidistant from the center line; the heights of the blocks are the same.

[0012] Furthermore, the two groups of positioning blocks are respectively arranged at two ends of the lower pressing plate.

[0013] Furthermore, the fastening structure includes a pressing plate with a threaded hole; the pressing plate is arranged on the outside of the through hole through a bolt; the threaded hole cooperates with the bolt to support the hinge shaft to move up and down through the extension and contraction of the bolt.

[0014] Furthermore, the upper pressing plate and / or the lower pressing plate are provided with a level ruler for observing the horizontal state.

[0015] Furthermore, the lower pressing plate is provided with a support rod and a base; the support rod is a telescopic structure.

[0016] Furthermore, the upper pressing plate is provided with a pull ring for moving the upper pressing plate.

[0017] Furthermore, the upper pressing plate is provided with a plurality of observation windows for observing the welding sites.

[0018] Furthermore, it comprises a plurality of ferrules with different inner diameters and shapes; the outer diameter and shape of the ferrule are adapted to the through hole; and the inner diameter and shape of the ferrule are adapted to the ends of different hinge shafts.

[0019] Compared with the prior art, the beneficial effects of the technical solution of the utility model are:

[0020] The utility model innovatively arranges an upper pressing plate and a lower pressing plate which are symmetrical in vertical direction, and realizes accurate positioning of the hinge shaft welded on the cylindrical cylinder barrel through positioning components such as a column, a positioning block and a through hole.

[0021] The hydraulic cylinder hinge shaft welding device of this embodiment is provided with an upper pressure plate and a lower pressure plate that are symmetrical in upper and lower directions, and positioning components such as columns, positioning blocks and through holes. The cylinder barrel of the cylinder is placed on the positioning block of the lower pressure plate, so that the hinge shaft located in the through hole of the lower pressure plate and the hinge shaft located through the upper pressure plate are symmetrically arranged with respect to the center of the cylinder barrel cross section, thereby realizing precise positioning of the hinge shaft welded on the cylindrical cylinder barrel.

[0022] At the same time, the distance between the upper and lower pressing plates is adjusted by the nut, and the hinge shaft and cylinder barrel located on the upper pressing plate are pressed tightly to avoid problems such as movement and dislocation during welding. Furthermore, the fastening structure located on the lower pressing plate realizes the compression between the hinge shaft and the cylinder barrel located on the lower pressing plate, avoiding problems such as movement and dislocation during welding, and further ensuring the positioning accuracy. Specifically, the pressing plate is fixed to the lower surface of the lower pressing plate, and by rotating the bolt, the bolt supports the hinge shaft to move upward, thereby pressing the cylinder barrel.

[0023] In order to make the hydraulic cylinder hinge shaft welding device suitable for hinge shafts of more different specifications and shapes, the utility model also includes a plurality of rings with different inner diameter sizes and shapes; in order to obtain a good welding angle and facilitate welding operations, the upper pressure plate 1 is also provided with a plurality of observation windows for observing welding sites. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a hydraulic cylinder hinge shaft welding device;

[0025] Figure 2 It is a side structural schematic diagram of a hydraulic cylinder hinge shaft welding device;

[0026] Figure 3 is a top view of the lower pressure plate;

[0027] Figure 4 is a side view of the lower pressure plate;

[0028] Figure 5 is a top view of the upper pressing plate;

[0029] Figure 6 It is a schematic diagram of the cylinder structure with a hinge shaft.

[0030] Among them, 1. upper pressure plate; 2. lower pressure plate; 3. column; 4. through hole; 5. hinge shaft; 6. cylinder; 21. positioning block; 22. fastening structure; 211. block; 221. pressure plate; 222. bolt; 31. nut; 23. support rod; 24. base; 11. pull ring; 51. end; 12. observation window; 13. level ruler. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the described embodiments, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. "First", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0033] Example 1

[0034] A hydraulic cylinder hinge shaft welding device comprises an upper pressing plate 1 and a lower pressing plate 2 which are symmetrically arranged in an upper and lower direction, and four vertical columns 3 are arranged between the upper pressing plate 1 and the lower pressing plate 2. The columns 3 are provided with threads and the distance between the upper pressing plate 1 and the lower pressing plate 2 is adjusted by nuts 31. The upper pressing plate 1 and the lower pressing plate 2 are provided with two groups of through holes 4 which are opposite to each other and are used to place the hinge shaft 5.

[0035] The lower pressing plate 2 is symmetrically provided with positioning blocks 21 for fixing the cylinder 6 on both sides of the center line; the lower pressing plate 2 is provided with two groups of positioning blocks 21; the center of the through hole 4 is located on the center line of the lower pressing plate 2.

[0036] A fastening structure 22 for fixing the hinge shaft is provided at the through hole 4 of the lower pressing plate 2 .

[0037] The upper pressing plate 1 and the lower pressing plate 2 are respectively provided with two groups of through holes 4 facing each other for placing the hinge shafts 5 .

[0038] The positioning block 21 is composed of two blocks 211, which are respectively located on both sides of the center line of the lower pressing plate 2 and are equidistant from the center line; the blocks 211 have the same height.

[0039] Two groups of positioning blocks 21 are respectively arranged at two ends of the lower pressing plate 2 .

[0040] The fastening structure 22 includes a pressing piece 221 with a threaded hole. The pressing piece 221 is arranged outside the through hole 4 through a bolt. The threaded hole cooperates with the bolt 222 to support the hinge shaft 5 to move up and down through the extension and contraction of the bolt 222.

[0041] The lower pressing plate 2 is provided with a support rod 23 and a base 24; the support rod 23 is a telescopic structure.

[0042] The upper pressing plate 1 is provided with a pull ring 11 for moving the upper pressing plate.

[0043] The hydraulic cylinder hinge shaft welding device of this embodiment is provided with an upper pressure plate 1 and a lower pressure plate 2 which are symmetrical in upper and lower directions, and positioning components such as a column 3, a positioning block 21 and a through hole 4. The cylinder barrel 6 of the cylinder is placed on the positioning block 21 of the lower pressure plate 2, so that the hinge shaft located at the through hole 4 of the lower pressure plate 2 and the hinge shaft located at the through hole 4 of the upper pressure plate 1 are symmetrically arranged with respect to the center of the cylinder barrel cross section, thereby realizing precise positioning of the hinge shaft welded on the cylindrical cylinder barrel.

[0044] At the same time, the distance between the upper pressing plate 1 and the lower pressing plate 2 is adjusted by the nut 31 to tighten the hinge shaft and the cylinder 6 located on the upper pressing plate 1 to avoid problems such as movement and misalignment during welding.

[0045] Furthermore, the fastening structure 22 located on the lower pressing plate 2 realizes the compression between the hinge shaft located on the lower pressing plate 2 and the cylinder barrel 6, thereby avoiding problems such as displacement and misalignment during welding, and further ensuring the positioning accuracy, etc. Specifically, the pressing sheet 221 is fixed to the lower surface of the lower pressing plate, and by rotating the bolt 222, the bolt supports the hinge shaft 5 upward to move upward, thereby compressing the cylinder barrel 6.

[0046] The method for using the hydraulic cylinder hinge shaft welding device of this embodiment comprises the following steps:

[0047] S1. The hinge shaft 5 is placed on the through hole 4 of the lower pressure plate 2, and the cylinder 6 is placed on the positioning block 21;

[0048] S2. Place another hinge shaft 5 on the through hole 4 of the upper platen 1, and place the upper platen down along the column 3; adjust the upper platen 1 by the nut 31 on the column 3, and press the lower platen 2;

[0049] S3. By rotating the bolt 222 , the bolt 222 supports the hinge shaft 5 to move upward, thereby pressing the cylinder 6 .

[0050] Example 2

[0051] The hydraulic cylinder hinge shaft welding device of this embodiment includes an upper pressing plate 1 and a lower pressing plate 2 which are symmetrically arranged in an upper and lower direction, and four vertical columns 3 are arranged between the upper pressing plate 1 and the lower pressing plate 2. The columns 3 are provided with threads and the distance between the upper pressing plate 1 and the lower pressing plate 2 is adjusted by nuts 31. The upper pressing plate 1 and the lower pressing plate 2 are provided with two groups of through holes 4 which are opposite to each other and are used to place the hinge shaft 5.

[0052] The lower pressing plate 2 is symmetrically provided with positioning blocks 21 for fixing the cylinder 6 on both sides of the center line; the lower pressing plate 2 is provided with two groups of positioning blocks 21; the center of the through hole 4 is located on the center line of the lower pressing plate 2.

[0053] A fastening structure 22 for fixing the hinge shaft is provided at the through hole 4 of the lower pressing plate 2 .

[0054] The upper pressing plate 1 and the lower pressing plate 2 are respectively provided with two groups of through holes 4 facing each other for placing the hinge shafts 5 .

[0055] In order to make the hydraulic cylinder hinge shaft welding device suitable for hinge shafts of more different specifications and shapes, this embodiment, based on Embodiment 1, further includes a plurality of rings with different inner diameter sizes and shapes; the outer diameter and shape of the ring are adapted to the through hole 4; the inner diameter and shape of the ring are adapted to the end 51 of different hinge shafts 5.

[0056] When in use, a suitable ferrule is selected according to the size and shape of the end 51 of the hinge shaft 5 ; the ferrule is placed at the end 51 and assembled in the through hole 4 to achieve fixation between the hinge shaft 5 and the through hole 4 .

[0057] Example 3

[0058] The hydraulic cylinder hinge shaft welding device of this embodiment includes an upper pressing plate 1 and a lower pressing plate 2 which are symmetrically arranged in an upper and lower direction, and four vertical columns 3 are arranged between the upper pressing plate 1 and the lower pressing plate 2. The columns 3 are provided with threads and the distance between the upper pressing plate 1 and the lower pressing plate 2 is adjusted by nuts 31. The upper pressing plate 1 and the lower pressing plate 2 are provided with two groups of through holes 4 which are opposite to each other and are used to place the hinge shaft 5.

[0059] The lower pressing plate 2 is symmetrically provided with positioning blocks 21 for fixing the cylinder 6 on both sides of the center line; the lower pressing plate 2 is provided with two groups of positioning blocks 21; the center of the through hole 4 is located on the center line of the lower pressing plate 2.

[0060] A fastening structure 22 for fixing the hinge shaft is provided at the through hole 4 of the lower pressing plate 2 .

[0061] The upper pressing plate 1 and the lower pressing plate 2 are respectively provided with two groups of through holes 4 facing each other for placing the hinge shafts 5 .

[0062] In order to obtain a good welding angle and facilitate welding operation, etc., in this embodiment, based on the embodiment 1, the upper pressing plate 1 is further provided with a plurality of observation windows 12 for observing the welding sites.

[0063] In this embodiment, a level ruler 13 for observing the horizontal state is provided on the upper pressing plate 1 and the lower pressing plate 2, so as to further improve the welding accuracy while maintaining the horizontal condition.

[0064] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A hydraulic cylinder hinge shaft welding device, characterized in that: It includes an upper pressing plate and a lower pressing plate which are symmetrically arranged up and down, and at least four vertical columns are arranged between the upper pressing plate and the lower pressing plate, and the columns are provided with threads and the distance between the upper pressing plate and the lower pressing plate is adjusted by nuts; The upper pressing plate and the lower pressing plate are provided with through holes facing each other for placing the hinge shaft; the lower pressing plate is symmetrically provided with positioning blocks for fixing the cylinder barrel on both sides of the midline; the lower pressing plate is provided with at least two groups of the positioning blocks; the center of the through hole is located on the midline of the lower pressing plate A fastening structure for fixing the hinge shaft is provided at the through hole of the lower pressing plate.

2. The hydraulic cylinder hinge shaft welding device according to claim 1 is characterized in that: The upper pressing plate and the lower pressing plate are respectively provided with at least one set of through holes facing each other for placing the hinge shaft.

3. The hydraulic cylinder hinge shaft welding device according to claim 1 is characterized in that: The positioning block is composed of two blocks, which are respectively located on both sides of the center line of the lower pressing plate and are equidistant from the center line; the heights of the blocks are the same.

4. The hydraulic cylinder hinge shaft welding device according to claim 1, characterized in that: The two groups of positioning blocks are respectively arranged at two ends of the lower pressing plate.

5. The hydraulic cylinder hinge shaft welding device according to claim 1, characterized in that: The fastening structure comprises a pressing plate with a threaded hole; the pressing plate is arranged on the outside of the through hole through a bolt; the threaded hole cooperates with the bolt to support the hinge shaft to move up and down through the extension and contraction of the bolt.

6. The hydraulic cylinder hinge shaft welding device according to claim 1, characterized in that: The upper pressing plate and / or the lower pressing plate are provided with a level ruler for observing the horizontal state.

7. The hydraulic cylinder hinge shaft welding device according to claim 1, characterized in that: The lower pressing plate is provided with a supporting rod and a base; the supporting rod is a telescopic structure.

8. The hydraulic cylinder hinge shaft welding device according to claim 1, characterized in that: The upper pressing plate is provided with a pull ring for moving the upper pressing plate.

9. The hydraulic cylinder hinge shaft welding device according to claim 1, characterized in that: The upper pressing plate is provided with a plurality of observation windows for observing welding positions.

10. The hydraulic cylinder hinge shaft welding device according to claim 1, characterized in that: It comprises a plurality of ferrules with different inner diameters and shapes; the outer diameter and shape of the ferrule are adapted to the through hole; and the inner diameter and shape of the ferrule are adapted to the ends of different hinge shafts.

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