Sealing performance detection tool of servo hydraulic oil cylinder

Abstract

The utility model relates to the hydraulic oil cylinder sealing performance detection technical field, and discloses a servo hydraulic oil cylinder sealing performance detection tool comprising a support seat, one side of the support seat is provided with a detection head, the interior of the detection head is fixedly connected with a connecting pipe, the top of the support seat is slidingly connected with a work bench, and the work bench is provided with a clamping groove. A fixing assembly is arranged at the top of the workbench and used for limiting and fixing the servo hydraulic oil cylinder, the fixing assembly comprises a connecting base, a connecting assembly is arranged on the outer wall of the connecting pipe, and the connecting assembly is used for rapidly connecting the connecting pipe with an oil nozzle. According to the utility model, the output end of the air cylinder drives the I-shaped frame to slide on the outer wall of the connecting shaft, and the connecting rod is further driven to shift inwards in the ascending process, so that the effect of quickly clamping and fixing the oil cylinder is realized, and the problem that the detection accuracy is influenced by cumbersome operation and unstable fixation of a fixing assembly in the prior art is solved; and the overall working efficiency of equipment sealing performance detection is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic cylinder leakproofness detection technical field especially relates to a kind of leakproofness detection tool of servo hydraulic cylinder. BACKGROUND

[0002] In many industrial fields, servo hydraulic cylinder as key power execution element is widely used in various mechanical equipment, and leakproofness as an important performance index of servo hydraulic cylinder is related to whether oil cylinder can work normally and the safety and reliability of equipment, once oil cylinder appears bad sealing condition, not only will it lead to hydraulic oil leakage, cause environmental pollution and resource waste, but also will cause equipment failure, increase maintenance cost, even affect production progress and endanger the safety of operating personnel, to ensure that the leakproofness of servo hydraulic cylinder meets the requirements, it needs to be strictly detected in production and manufacturing link and equipment regular maintenance process.Therefore, a kind of precise, efficient and convenient operation leakproofness detection tool of servo hydraulic cylinder is particularly important, it can help enterprise to effectively control product quality, guarantee the normal operation of equipment, reduce many adverse effects caused by oil cylinder sealing problem;

[0003] At present, in the aspect of servo hydraulic cylinder leakproofness detection, common detection method uses a variety of mechanical structures and corresponding technical principles.For example, in pressure detection method, pressure sensor, valve and connecting pipeline and other mechanical structures are used, first, oil cylinder is connected with hydraulic source or gas source through pipeline, valve is used to control the in and out of medium, pressure sensor is installed on the key position of oil cylinder or connecting pipeline, internal pressure change is monitored in real time, after medium is filled into oil cylinder to reach set pressure, valve is closed to keep certain pressure state in oil cylinder, pressure sensor value is observed in a period of time, if pressure drops exceed specified range, it is determined that oil cylinder leakproofness has problem, to complete leakproofness detection work;

[0004] However, existing pressure detection method has certain limitations in actual application, especially in fixed component aspect, the fixed component currently adopted is often simple in structure, only servo hydraulic cylinder is fixed by conventional clamp or simple bolt fixing mode, a lot of time is spent to adjust and adapt fixing device before each detection, operation is tedious and inefficient.Moreover, these conventional fixed components cannot guarantee that oil cylinder is always in stable and accurate position state during the whole detection process when fixing oil cylinder.When medium is filled into oil cylinder and pressure is applied, oil cylinder is prone to slight displacement due to insufficient fixation, which will interfere with the pressure data obtained by pressure sensor, so that detection result is not accurate enough, it is difficult to accurately judge whether the leakproofness of oil cylinder truly meets the requirements, therefore, a kind of leakproofness detection tool of servo hydraulic cylinder is proposed to solve the above problems. Utility model content

[0005] In order to make up for the above shortcomings, the utility model provides a kind of sealing detection tool of servo hydraulic cylinder, to improve the problems of servo hydraulic cylinder pressure detection in prior art, fixed assembly is fixed after fixed, cylinder is easily displaced to affect detection accuracy and the low problem of detection efficiency.

[0006] In order to realize the above purpose, the utility model adopts the following technical scheme:

[0007] A kind of sealing detection tool of servo hydraulic cylinder, including support seat, the support seat one side is provided with detection head, the detection head inside fixedly connected with connecting pipe, the support seat top is slidably connected with workbench, the workbench top is provided with fixed assembly, the fixed assembly is used to limit and fix servo hydraulic cylinder;

[0008] The fixed assembly includes connecting seat, the connecting seat is fixedly connected on the workbench upper surface, the connecting seat top is fixedly connected with support plate, the connecting seat top is fixedly connected with cylinder, the cylinder output end is fixedly connected with work shape frame, the support plate side wall is fixedly connected with connecting shaft, the connecting shaft outer wall is rotatably connected with connecting rod, the work shape frame is slidably connected on the connecting shaft outer wall, the connecting rod side wall is fixedly connected with fixed ring, the fixed ring inside is fixedly connected with protective ring, the connecting pipe outer wall is provided with connecting assembly, and the connecting assembly is used to quickly connect connecting pipe with oil nozzle;

[0009] As further description of the above technical scheme:

[0010] The connecting assembly includes U-shaped plate one and transmission plate, the U-shaped plate one is slidably connected on the connecting pipe outer wall, and the transmission plate is rotatably connected on the U-shaped plate one side;

[0011] As further description of the above technical scheme:

[0012] The transmission plate inside is rotatably connected with U-shaped plate two, and the U-shaped plate two inner side is fixedly connected with sealing rubber ring two;

[0013] As further description of the above technical scheme:

[0014] The U-shaped plate one inside is rotatably connected with sealing rubber ring one, and the U-shaped plate two one side is fixedly connected with connecting block one;

[0015] As further description of the above technical scheme:

[0016] The connecting block one side wall is fixedly connected with connecting ring, and the connecting ring inside is rotatably connected with rotating frame;

[0017] As a further description of the above technical solution:

[0018] A connecting block two is fixedly connected to one side of the U-shaped plate, and a rotating plate is rotatably connected inside the connecting block two;

[0019] As a further description of the above technical solution:

[0020] The rotating plate is rotatably connected to a rotating column, and one side of the rotating frame is fixedly connected to the outer wall of the rotating column;

[0021] As a further description of the above technical solution:

[0022] A lever is fixedly connected to the outer wall of the rotating column.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, the cylinder output end drives the I-shaped frame to slide on the outer wall of the connecting shaft. Since the I-shaped frame is in the shape of an inclined sliding groove, it will further drive the connecting rod to move inward during the upward process, thereby driving the fixing ring and the connecting shaft to move synchronously, thus achieving the effect of quickly clamping and fixing the oil cylinder. This solves the problems of cumbersome operation of the fixing components and unstable fixing affecting the accuracy of the test in the prior art, and improves the overall working efficiency of the equipment sealing test.

[0025] 2. In this utility model, the operator attaches the connecting pipe to the oil nozzle and drives the rotating frame to rotate synchronously inside the connecting ring and rotating plate by moving the lever. This forces the second U-shaped plate to rotate inside the transmission plate, thereby quickly connecting the connecting pipe and the oil nozzle. The sealing performance can be further improved by the first and second sealing rings, thus achieving the effect of quickly connecting and fixing the connecting pipe and the oil nozzle. This solves the problems of poor sealing and inconvenient operation in the existing technology, and improves the connection operation efficiency in the equipment testing process. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a sealing performance testing fixture for a servo hydraulic cylinder proposed in this utility model.

[0027] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0028] Figure 3 This is a schematic diagram of the top of the connecting seat of a sealing performance testing fixture for a servo hydraulic cylinder proposed in this utility model.

[0029] Figure 4 for Figure 1 Enlarged view of point B in the middle;

[0030] Figure 5 This is a schematic diagram of the outer wall structure of the connecting pipe of a servo hydraulic cylinder sealing test fixture proposed in this utility model.

[0031] Legend:

[0032] 1. Support base; 2. Detection head; 3. Workbench; 4. Connecting seat; 5. Support plate; 6. Cylinder; 7. I-beam frame; 8. Connecting rod; 9. Fixing ring; 10. Protective ring; 11. Connecting shaft; 12. Connecting pipe; 13. U-shaped plate one; 14. Transmission plate; 15. U-shaped plate two; 16. Sealing ring one; 17. Sealing ring two; 18. Connecting block one; 19. Connecting ring; 20. Rotating frame; 21. Connecting block two; 22. Rotating plate; 23. Rotating column; 24. Lever. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Reference Figure 1 - Figure 3 The present invention provides an embodiment of a sealing performance testing fixture for a servo hydraulic cylinder, comprising a support base 1, a testing head 2 disposed on one side of the support base 1, a connecting pipe 12 fixedly connected inside the testing head 2, the connecting pipe 12 being used to transport oil to the testing component, and testing the sealing performance of the cylinder by connecting it to the cylinder; a worktable 3 is slidably connected to the top of the support base 1, the worktable 3 being able to slide on the support base 1 as needed, thereby facilitating the adjustment of the contact position between the testing head 2 and the servo hydraulic cylinder; a fixing component is disposed on the top of the worktable 3, the fixing component being used to limit and fix the servo hydraulic cylinder;

[0035] The fixing assembly comprises a connecting seat 4 fixedly connected to the upper surface of the workbench 3 for providing a firm supporting platform, a supporting plate 5 fixedly connected to the top of the connecting seat 4 for providing a stable supporting platform, a pneumatic cylinder 6 fixedly connected to the top of the connecting seat 4 for realizing accurate positioning and limiting of the oil cylinder by pushing the I-shaped frame 7 to move downward or upward, the I-shaped frame 7 fixedly connected to the output end of the pneumatic cylinder 6, a connecting shaft 11 fixedly connected to the side wall of the supporting plate 5, a connecting rod 8 rotatably connected to the outer wall of the connecting shaft 11 for further transmitting power to drive the subsequent components to clamp the oil cylinder, the I-shaped frame 7 slidingly connected to the outer wall of the connecting shaft 11, a fixing ring 9 fixedly connected to the side wall of the connecting rod 8, and a protective ring 10 fixedly connected to the inside of the fixing ring 9 for providing soft clamping to further protect the outer wall of the oil cylinder. The connecting pipe 12 is provided with a connecting assembly for quickly connecting the connecting pipe 12 with the oil nozzle.

[0036] Specifically, when detecting the sealing performance of the servo hydraulic oil cylinder, the fixing assembly is needed to ensure that the oil cylinder does not displace during the detection process and to guarantee that the detection data is accurate and reliable. The operator places the servo hydraulic oil cylinder inside the fixing ring 9, which provides a stable supporting point to ensure that the position of the oil cylinder does not deviate during the fixing process. After placing the oil cylinder, the I-shaped frame 7 is driven by the output end of the pneumatic cylinder 6 to move up and down. The pneumatic cylinder 6 acts as a driving device in this process, providing sufficient power through its air pressure to drive the I-shaped frame 7 to move. The I-shaped frame 7 has inclined grooves inside. When the I-shaped frame 7 moves up and down, these inclined grooves come into contact with and slide along the outer wall of the connecting shaft 11, forming a relative sliding force. At this time, the connecting shaft 11 and the connecting rod 8 are connected through the inclined grooves and the sliding cooperation, which drives the connecting rod 8 to make a synchronous deviation movement. The connecting rod 8 is located on both sides, and through their synchronous deflection movement, it can effectively drive the fixing ring 9 and the protective ring 10 to move together. The fixing ring 9 and the protective ring 10 are driven by the connecting rod 8 to adjust synchronously along the predetermined track, and finally the servo hydraulic oil cylinder is firmly fixed. In this way, the fixing ring 9 and the protective ring 10 not only effectively lock the oil cylinder, but also ensure that the oil cylinder does not deviate during the entire detection process, avoiding detection errors caused by unstable position of the oil cylinder.

[0037] Reference Figure 4 and Figure 5The connecting assembly comprises a U-shaped plate 13 and a transmission plate 14. The U-shaped plate 13 is slidingly connected to the outer wall of the connecting pipe 12. The sliding connection of the U-shaped plate 13 allows it to freely move along the axial direction of the connecting pipe 12, thereby providing a flexible connection mode when connecting the oil cylinder and the detection assembly. The transmission plate 14 is rotatably connected to one side of the U-shaped plate 13 and is used to drive the movement of the U-shaped plate 2 15 and the U-shaped plate 1 13. The U-shaped plate 2 15 is rotatably connected inside the transmission plate 14. The U-shaped plate 2 15 is fixedly connected with a sealing rubber ring 2 17 on the inner side. The sealing rubber ring 2 17 has excellent sealing performance, which ensures that the contact surface between the U-shaped plate 2 15 and the connecting pipe 12 will not leak. The U-shaped plate 1 13 is rotatably connected with a sealing rubber ring 1 16. The sealing rubber ring 1 16 is tightly matched with the inner wall of the U-shaped plate 1 13, which ensures that the contact part between the connecting pipe 12 and the U-shaped plate 1 13 also has good sealing performance. The U-shaped plate 2 15 is fixedly connected with a connecting block 1 18 on one side. The connecting block 1 18 is fixedly connected with a connecting ring 19 on the side wall. The connecting ring 19 is rotatably connected with a rotating frame 20 inside.

[0038] Specifically, when the sealing performance of the servo hydraulic oil cylinder needs to be detected and the medium needs to be injected into the inside to judge the sealing performance, the connecting assembly is needed to realize reliable connection between the detection pipe and the oil nozzle and ensure good sealing. The operator first accurately matches the connecting pipe 12 with the oil cylinder nozzle. At this time, the connection between the connecting pipe 12 and the nozzle is loose. Therefore, the next step is to start the fixing process by turning the lever 24. After turning the lever 24, the lever 24 drives the rotating column 23 to rotate. The rotation of the rotating column 23 causes it to rotate inside the rotating plate 22. Since the rotating column 23 is connected to the rotating plate 22 through mechanical connection, the movement of the rotating column 23 will force the rotating plate 22 to rotate synchronously inside the connecting block 2 21.

[0039] Referring to Figure 4 and Figure 5 , the U-shaped plate 1 13 is fixedly connected with a connecting block 2 21 on one side. The connecting block 2 21 is rotatably connected with a rotating plate 22 inside. The rotating plate 22 is rotatably connected with a rotating column 23 inside. The rotating column 23 has a certain outer diameter and length, allowing it to rotate freely on the rotating plate 22. At the same time, the outer wall of the rotating column 23 has good friction characteristics to ensure stable rotation and durability. The rotating frame 20 is fixedly connected with the outer wall of the rotating column 23 on one side. The outer wall of the rotating column 23 is fixedly connected with a lever 24. The lever 24 is in the shape of a long rod, which is used to facilitate the operator to quickly start the assembly.

[0040] Specifically, the rotation of the rotating plate 22 further drives the rotating frame 20 to move correspondingly, the movement of the rotating frame 20 causes the movement of the U-shaped plate two 15, and with the pushing of the rotating frame 20, the U-shaped plate two 15 and the sealing rubber ring one 16 will shrink synchronously to the inside and produce extrusion, the shrinkage and extrusion of the U-shaped plate two 15 can quickly connect the connecting pipe 12 and the oil nozzle firmly and ensure its stable fixation, prevent loosening or falling off during work, in addition, in the aspect of sealing connection, the sealing rubber ring one 16 and the sealing rubber ring two 17 further strengthen the sealing property between the connecting pipe 12 and the oil nozzle through their elasticity and compressibility in this process, prevent liquid leakage or external contamination, this double sealing structure not only improves the firmness of the connection, but also effectively enhances the sealing performance, ensures the closed state of the oil cylinder and the connecting pipe 12, thereby avoiding the leakage problem that causes failure or efficiency loss.

[0041] Working principle: when using the device, the servo hydraulic oil cylinder is placed inside the fixed ring 9 by the operator, after the oil cylinder is placed, the output end of the air cylinder 6 drives the I-shaped frame 7 to move up and down, when the I-shaped frame 7 moves, the inclined groove inside it will slide on the outer wall of the connecting shaft 11, so that the connecting rod 8 makes synchronous deflection movement, the synchronous movement of the fixed ring 9 and the protection ring 10 is driven by the synchronous deflection movement of the two connecting rods 8, so as to achieve the effect of quickly fixing and locking the oil cylinder, prevent the oil cylinder from deviating during detection, causing detection failure, during detection, the operator makes the connecting pipe 12 fit with the oil nozzle of the oil cylinder, and then rotates the lever 24 to drive the rotating column 23 to rotate inside the rotating plate 22, the rotating plate 22 is forced to rotate synchronously inside the connecting block two 21 by the rotation of the rotating column 23, so as to drive the rotating frame 20 to move, the U-shaped plate two 15 and the sealing rubber ring one 16 are pulled to shrink and extrude synchronously to the inside by the movement of the rotating frame 20, so as to achieve the effect of quickly connecting and fixing the connecting pipe 12 and the oil nozzle, the sealing property can be further strengthened by the action of the sealing rubber ring one 16 and the sealing rubber ring two 17.

[0042] Finally, it should be pointed out that: the above only describes the preferred embodiments of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A sealing detection tool for a servo hydraulic cylinder, comprising a support seat (1), characterized in that: The support seat (1) is provided with a detection head (2) on one side, the detection head (2) is fixedly connected with a connecting pipe (12) inside, the support seat (1) is slidably connected with a workbench (3) on the top, and the workbench (3) is provided with a fixing assembly on the top; the fixing assembly is used for limiting and fixing the servo hydraulic oil cylinder; The fixing assembly comprises a connecting seat (4) fixedly connected to the upper surface of the workbench (3), a support plate (5) fixedly connected to the top of the connecting seat (4), a gas cylinder (6) fixedly connected to the top of the connecting seat (4), a H-shaped frame (7) fixedly connected to the output end of the gas cylinder (6), a connecting shaft (11) fixedly connected to the side wall of the support plate (5), a connecting rod (8) rotatably connected to the outer wall of the connecting shaft (11), the H-shaped frame (7) is slidably connected to the outer wall of the connecting shaft (11), a fixing ring (9) fixedly connected to the side wall of the connecting rod (8), and a protection ring (10) fixedly connected to the inside of the fixing ring (9); the connecting pipe (12) is provided with a connecting assembly, and the connecting assembly is used for quickly connecting the connecting pipe (12) and the oil nozzle.

2. The sealing detection tool for a servo hydraulic cylinder according to claim 1, characterized in that: The connecting assembly comprises a U-shaped plate one (13) and a transmission plate (14), the U-shaped plate one (13) is slidably connected to the outer wall of the connecting pipe (12), and the transmission plate (14) is rotatably connected to one side of the U-shaped plate one (13).

3. The sealing detection tool for a servo hydraulic cylinder according to claim 2, characterized in that: The transmission plate (14) is rotatably connected with a U-shaped plate two (15) inside, and the U-shaped plate two (15) is fixedly connected with a sealing rubber ring two (17) on the inner side.

4. The sealing detection tool for a servo hydraulic cylinder according to claim 3, characterized in that: The U-shaped plate one (13) is rotatably connected with a sealing rubber ring one (16) inside, and the U-shaped plate two (15) is fixedly connected with a connecting block one (18) on one side.

5. The sealing detection tool for a servo hydraulic cylinder according to claim 4, characterized in that: The connecting block one (18) is fixedly connected with a connecting ring (19) on the side wall, and the connecting ring (19) is rotatably connected with a rotating frame (20) inside.

6. The sealing detection tool for a servo hydraulic cylinder according to claim 5, characterized in that: The U-shaped plate one (13) is fixedly connected with a connecting block two (21) on one side, and the connecting block two (21) is rotatably connected with a rotating plate (22) inside.

7. The sealing detection tool for a servo hydraulic cylinder according to claim 6, characterized in that: The rotating plate (22) is rotatably connected with a rotating column (23) inside, and the rotating frame (20) is fixedly connected with the outer wall of the rotating column (23) on one side.

8. The sealing detection tool for a servo hydraulic cylinder according to claim 7, characterized in that: The rotating column (23) is fixedly connected with a push rod (24) on the outer wall.

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