Auxiliary tool for correcting bending deformation of oil cylinder piston

Abstract

The utility model provides a kind of auxiliary tool of oil cylinder active column bending deformation correction. The auxiliary tool of oil cylinder active column bending deformation correction includes: press, the press includes installation platform and lower pressing column, and the lower pressing column is welded and installed with pressure block connecting plate;Lower V block, the lower V block is set on the top of installation platform, and the lower V block includes pressure block and two lower pads, two lower pads are symmetrical and are bolted on pressure block, two lower pads form V groove, and the pressure block is bolted on pressure block connecting plate;Old oil cylinder active column, the old oil cylinder active column is set on the top of installation platform. The auxiliary tool of oil cylinder active column bending deformation correction provided by the utility model can improve work efficiency, simplify operation process, reduce labor intensity and time of worker, save direct production cost, reduce operation time, have the advantages of good economic and social benefits.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic cylinder repair technology, and in particular relates to an auxiliary tooling for correcting the bending deformation of a hydraulic cylinder piston. Background Technology

[0002] After prolonged use downhole, old hydraulic cylinder pistons require repair due to wear and corrosion. A common repair method is surface laser cladding. This process involves turning and laser cladding the piston surface. However, due to bending deformation, the piston's coaxiality cannot be guaranteed. Therefore, the feed rate is increased during rough turning to ensure the initial coaxiality meets the requirements before laser cladding. However, this increased feed rate results in a thicker laser cladding layer needed to restore the original dimensions, increasing the overall repair cost. Previously, this problem was addressed by calibrating the piston on a press before turning. However, due to the lack of reference and visual data, the calibration amount often relied on the operator's feel and experience, leading to problems such as insufficient calibration, continued bending, excessive calibration, reverse bending, and difficulty meeting tolerances. Therefore, correcting the bending deformation of old hydraulic cylinder pistons is a difficult, time-consuming, and labor-intensive problem that must be solved.

[0003] Currently, there is no effective solution to this problem. Therefore, it is necessary to provide an auxiliary tooling for correcting the bending deformation of the old hydraulic cylinder piston to solve the above problem. Utility Model Content

[0004] The technical problem solved by this utility model is to provide an auxiliary tooling for correcting the bending deformation of a hydraulic cylinder piston, which can improve work efficiency, simplify the operation process, reduce the labor intensity and time of workers, save direct production costs, reduce operation time, and have good economic and social benefits.

[0005] To solve the above technical problems, the auxiliary tooling for correcting the bending deformation of the hydraulic cylinder piston provided by this utility model includes: a press, the press including an installation platform and a pressing column, and a pressure block connecting plate welded and installed on the pressing column;

[0006] A V-shaped pressing block is provided above the top of the installation platform. The V-shaped pressing block includes a pressing block and two lower pads. The two lower pads are symmetrical and are installed on the pressing block with bolts. The two lower pads cooperate to form a V-shaped groove. The pressing block is installed on the pressing block connecting plate with bolts.

[0007] Used hydraulic cylinder piston, which is installed above the top of the installation platform;

[0008] A limiting rail is installed on the top of the installation platform;

[0009] Two support V-blocks are symmetrically arranged on the limit rail;

[0010] A sensor lifting device is installed on the top of the installation platform and is located on one side of the limit rail.

[0011] A display, which is mounted on top of the mounting platform.

[0012] As a further embodiment of this utility model, the supporting V-shaped block includes a V-shaped base, two upper pads, a floating seat, a disc spring, a rotating shaft, and a bearing. The V-shaped base is placed on the mounting platform and slidably connected to the limiting rail.

[0013] As a further embodiment of this utility model, two upper pads are symmetrically mounted on a V-shaped base by bolts, and the two upper pads cooperate to form a V-shaped groove. The rotating shaft is mounted on a floating seat, and the bearing is mounted on the rotating shaft. The floating seat and the disc spring are embedded in the bottom mounting hole of the V-shaped base and limited by side bolts.

[0014] As a further embodiment of this utility model, the sensor lifting device includes a displacement sensor, a sensor mounting rod, a base plate, a screw jack, a guide shaft, a linear bearing, a sensor mounting platform, a guide shaft connecting plate, a bearing, and a retaining ring. The displacement sensor is mounted on the sensor mounting rod by means of screw clamping.

[0015] As a further embodiment of this utility model, the sensor mounting rod is fixed to the sensor mounting platform by bolts, the screw jack and the guide shaft are both fixed to the base plate, and the other end of the screw jack is connected to the guide shaft connecting plate by a bearing and a snap ring.

[0016] As a further embodiment of this utility model, the other end of the guide shaft is fixed to the guide shaft connecting plate, and the sensor mounting platform is fixed to the lifting nut of the screw jack.

[0017] Compared with related technologies, the auxiliary tooling for correcting the bending deformation of the hydraulic cylinder piston provided by this utility model has the following beneficial effects:

[0018] 1. This utility model has a simple, novel and unique structure, and is easy to install and use. It can effectively change the previous method of correction of bending deformation of old pistons from relying entirely on experience and feel to directly observing the specific value of the correction deformation of the piston after the press presses down on it, so as to confirm whether the bending deformation of the old piston has been corrected to the allowable tolerance range.

[0019] 2. This utility model can easily and intuitively correct the bending of old piston rods, ensuring the coaxiality of the old piston rods, reducing the thickness during rough machining and the thickness of the laser cladding layer, saving direct production costs, improving work efficiency, simplifying the operation process, reducing the labor intensity of workers, and reducing operation time, thus having good economic and social benefits. Attached Figure Description

[0020] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the assembly structure of the lower pressure column, pressure block connecting plate, pressure block and lower pad block in this utility model;

[0023] Figure 3 This is a schematic diagram of the assembly structure of the V-shaped base and the upper pad in this utility model;

[0024] Figure 4 This is a schematic diagram of the assembly structure of the floating seat, disc spring, rotating shaft and bearing in this utility model;

[0025] Figure 5 This is a schematic diagram of the sensor lifting device in this utility model;

[0026] Figure 6 This is a schematic diagram of the hydraulic press in this utility model.

[0027] In the diagram: 1. Hydraulic press; 11. Mounting platform; 12. Lower pressure column; 13. Pressure block connecting plate; 2. Lower pressure V-block; 21. Pressure block; 22. Lower pad block; 3. Old hydraulic cylinder piston; 4. Support V-block; 41. V-shaped base; 42. Upper pad block; 43. Floating seat; 44. Disc spring; 45. Rotating shaft; 46. Bearing; 5. Limit rail; 6. Sensor lifting device; 61. Displacement sensor; 62. Sensor mounting rod; 63. Base plate; 64. Screw jack; 65. Guide shaft; 66. Linear bearing; 67. Sensor mounting platform; 68. Guide shaft connecting plate; 69. Bearing; 70. Snap ring; 7. Display. Detailed Implementation

[0028] Please refer to the following: Figures 1 to 6 ,in, Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the assembly structure of the lower pressure column, pressure block connecting plate, pressure block and lower pad block in this utility model; Figure 3 This is a schematic diagram of the assembly structure of the V-shaped base and the upper pad in this utility model; Figure 4This is a schematic diagram of the assembly structure of the floating seat, disc spring, rotating shaft and bearing in this utility model; Figure 5 This is a schematic diagram of the sensor lifting device in this utility model; Figure 6 This is a schematic diagram of the hydraulic press in this utility model. The auxiliary tooling for correcting the bending deformation of the cylinder piston includes: a press 1, which includes a mounting platform 11 and a lower pressing column 12, and a pressure block connecting plate 13 is welded and installed on the lower pressing column 12;

[0029] The V-shaped block 2 is positioned above the top of the mounting platform 11. The V-shaped block 2 includes a pressure block 21 and two lower pads 22. The two lower pads 22 are symmetrical and are bolted to the pressure block 21. The two lower pads 22 cooperate to form an inverted V shape. The pressure block 21 is bolted to the pressure block connecting plate 13.

[0030] The old hydraulic cylinder piston 3 is located above the top of the mounting platform 11;

[0031] Limiting rail 5, which is installed on the top of the mounting platform 11;

[0032] Two supporting V-blocks 4 are symmetrically arranged on the limiting rail 5;

[0033] Sensor lifting device 6 is installed on the top of the mounting platform 11 and is located on one side of the limiting rail 5.

[0034] Display 7 is mounted on top of mounting platform 11.

[0035] The supporting V-shaped block 4 includes a V-shaped base 41, two upper pads 42, a floating seat 43, a disc spring 44, a rotating shaft 45, and a bearing 46. The V-shaped base 41 is placed on the mounting platform 11 and is slidably connected to the limiting rail 5.

[0036] Two upper pads are symmetrical and 42 are bolted to the V-shaped base 41. The two upper pads 42 cooperate to form a V-shape. The rotating shaft 45 is mounted on the floating seat 43. The bearing 46 is mounted on the rotating shaft 45. The floating seat 43 and the disc spring 44 are embedded in the bottom mounting hole of the V-shaped base 41 and are limited by the side bolts.

[0037] The sensor lifting device 6 includes a displacement sensor 61, a sensor mounting rod 62, a base plate 63, a screw jack 64, a guide shaft 65, a linear bearing 66, a sensor mounting platform 67, a guide shaft connecting plate 68, a bearing 69, and a snap ring 70. The displacement sensor 61 is mounted on the sensor mounting rod 62 by means of screw clamping.

[0038] The sensor mounting rod 62 is fixed to the sensor mounting platform 67 by bolts. The screw jack 64 and the guide shaft 65 are both fixed to the base plate 63. The other end of the screw jack 64 is connected to the guide shaft connecting plate 68 by a bearing 69 and a snap ring 70.

[0039] The other end of the guide shaft 65 is fixed on the guide shaft connecting plate 68, and the sensor mounting platform 67 is fixed on the lifting nut of the screw jack 64.

[0040] The press 1 mentioned is a commonly used 200-ton press, model including but not limited to YW32-200, which is an existing finished product, and its structure and principle will not be elaborated here.

[0041] The working principle of the auxiliary tooling for correcting the bending deformation of the hydraulic cylinder piston provided by this utility model is as follows:

[0042] First step: Adjust the position of the support V-block 4, slide the two support V-blocks 4 along the limit rail 5 to a suitable position, so that they provide symmetrical support according to the length and bending part of the old cylinder piston 3. The floating seat 43 and disc spring 44 on the bottom of the support V-block 4 are in a natural state when there is no workpiece. The bearing 45 is slightly higher than the bottom surface of the V-base 41 for easy movement. When the old cylinder piston 3 is placed, the disc spring 44 is compressed by gravity, the floating seat 43 retracts into the mounting hole, and the bottom surface of the V-base 41 directly contacts the mounting platform 11 to ensure stable load bearing.

[0043] Second step: Position the old hydraulic cylinder piston 3. Place the bent and deformed old hydraulic cylinder piston 3 in the V-groove of the supporting V-block 4. According to the highest point of bending marked in the previous process, align the highest point upwards with the direct underside of the pressing V-block 2 to ensure that the correction force is directly applied to the bent part.

[0044] The third step: calibrating the sensor and starting the calibration. Move the sensor lifting device 6 along the limit rail 5 to the side directly below the pressing V-block 2. Adjust the height of the sensor mounting platform 67 using the screw jack 64 so that the displacement sensor 61 is close to the other side of the highest bending point of the old hydraulic cylinder piston 3. After setting the initial value to zero on the display 7, start the press 1. The pressing column 12 drives the pressing V-block 2 to apply downward pressure. The displacement sensor 61 monitors the deformation of the piston in real time and transmits the data to the display. The operator judges the calibration progress based on the value changes and stops applying pressure when the tolerance range is reached.

[0045] It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, under the premise that those skilled in the art understand the principle of the above utility model, the specific details of its power mechanism, power supply system and control system can be clearly understood. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming.

[0046] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made to these embodiments, or they can be used directly or indirectly, without departing from the principles and spirit of the present invention. In other related technical fields, the scope of the present invention is defined by the appended claims and their equivalents, and they are similarly included within the patent protection scope of the present invention.

Claims

1. An auxiliary tooling for correcting the bending deformation of a hydraulic cylinder piston, characterized in that, include: A press, wherein the press 1 includes an installation platform and a pressing column, and a pressing block connecting plate is welded and installed on the pressing column; A V-shaped pressing block is provided above the top of the installation platform. The V-shaped pressing block includes a pressing block and two lower pads. The two lower pads are symmetrical and are installed on the pressing block with bolts. The two lower pads cooperate to form a V-shaped groove. The pressing block is installed on the pressing block connecting plate with bolts. Used hydraulic cylinder piston, which is installed above the top of the installation platform; A limiting rail is installed on the top of the installation platform; Two support V-blocks are symmetrically arranged on the limit rail; A sensor lifting device is installed on the top of the installation platform and is located on one side of the limit rail. A display, which is mounted on top of the mounting platform.

2. The auxiliary tooling for correcting the bending deformation of the hydraulic cylinder piston according to claim 1, characterized in that: The supporting V-shaped block includes a V-shaped base, two upper pads, a floating seat, a disc spring, a rotating shaft, and a bearing. The V-shaped base is placed on the mounting platform and slidably connected to the limiting rail.

3. The auxiliary tooling for correcting the bending deformation of the hydraulic cylinder piston according to claim 2, characterized in that: Two upper pads are symmetrically mounted on a V-shaped base by bolts. The two upper pads cooperate to form a V-shaped groove. The rotating shaft is mounted on a floating seat. The bearing is mounted on the rotating shaft. The floating seat and disc spring are embedded in the bottom mounting hole of the V-shaped base and are limited by side bolts.

4. The auxiliary tooling for correcting the bending deformation of the hydraulic cylinder piston according to claim 1, characterized in that: The sensor lifting device includes a displacement sensor, a sensor mounting rod, a base plate, a screw jack, a guide shaft, a linear bearing, a sensor mounting platform, a guide shaft connecting plate, bearings, and a retaining ring. The displacement sensor is mounted on the sensor mounting rod by clamping it with screws.

5. The auxiliary tooling for correcting the bending deformation of the hydraulic cylinder piston according to claim 4, characterized in that: The sensor mounting rod is fixed to the sensor mounting platform by bolts. The screw jack and the guide shaft are both fixed to the base plate. The other end of the screw jack is connected to the guide shaft connecting plate by a bearing and a snap ring.

6. The auxiliary tooling for correcting the bending deformation of the hydraulic cylinder piston according to claim 4, characterized in that: The other end of the guide shaft is fixed to the guide shaft connecting plate, and the sensor mounting platform is fixed to the lifting nut of the screw jack.

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