Hydraulic cylinder seal test fixture

Abstract

The utility model discloses a kind of hydraulic cylinder sealing test fixtures, it is related to hydraulic cylinder sealing test fixture technical field, including connecting block, the surface of connecting block is provided with a group of positioning holes, and first bolt is threadedly connected in positioning hole, the recess is provided in the bottom of connecting block, the sponge that is in accord with the recess is provided in the recess, the movable plate that is in accord with the recess is threadedly connected in connecting block.The utility model is when using, take out movable plate and use first bolt fixed connecting block, sliding connecting plate makes sponge not receive the extrusion of connecting plate and movable plate to expand and adhere hydraulic cylinder and piston rod junction, again to cavity transport strong oxidizing agent solution, make it from liquid outlet hole discharge and soak sponge, drive hydraulic cylinder to move, to can be observed whether sponge color change by the transparent structure of connecting block, it is helpful to directly judge hydraulic cylinder sealing test result, it is convenient to effectively test the sealing performance of hydraulic cylinder.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic cylinder sealing test fixture technical field, concretely is a kind of hydraulic cylinder sealing test fixture. BACKGROUND

[0002] Hydraulic cylinder is utilized oil as working medium, and motion and power are transmitted by the change of sealed volume, and its working principle is that high-pressure liquid provided by hydraulic pump pushes piston to move, specifically, power part converts mechanical energy of prime mover into pressure energy of oil;The execution part converts the oil pressure energy input by hydraulic pump into mechanical energy to drive working mechanism;When hydraulic pressure enters one side of hydraulic cylinder, piston will move to the other side, so as to realize the linear motion or rotation (swing) motion of machine.

[0003] In the use of hydraulic cylinder, hydraulic cylinder sealing test fixture is needed to detect the sealing performance of hydraulic cylinder, it judges whether the sealing performance of hydraulic cylinder is qualified by simulating the working state of hydraulic cylinder and observing whether leakage occurs at sealing position, and its test method has many, such as filling gas or liquid into hydraulic cylinder, then observing pressure change to judge sealing performance, etc., can test the sealing performance of hydraulic cylinder.

[0004] The existing hydraulic cylinder sealing test fixture needs to place the hydraulic cylinder to be tested in the middle of the fixture when testing the sealing of hydraulic cylinder, to ensure that the hydraulic cylinder is clamped by the fixture, then gas is injected into the sealing cavity in the hydraulic cylinder, and the value change of pressure gauge is observed to calculate, the calculated value is compared with the standard value, to obtain the sealing performance of hydraulic cylinder.

[0005] But when using hydraulic cylinder sealing test fixture, most of the existing test fixtures rely on pressure sensor and other electronic devices, so that the operation is more troublesome, and the sealing performance of hydraulic cylinder cannot be judged intuitively and accurately, which easily reduces work efficiency. UTILITY MODEL CONTENTS

[0006] Therefore, the utility model aims at providing a kind of hydraulic cylinder sealing test fixture to solve the technical problem that when using hydraulic cylinder sealing test fixture, most of the existing test fixtures rely on pressure sensor and other electronic devices, so that the operation is more troublesome, and the sealing performance of hydraulic cylinder cannot be judged intuitively and accurately, which easily reduces work efficiency.

[0007] In order to achieve the above object, the utility model provides following technical scheme: a hydraulic cylinder sealing test fixture, the surface of the connecting block is provided with a group of positioning holes, and the first bolt is screw connected in the positioning hole, the bottom of the connecting block is provided with a groove, the sponge that is in agreement with the groove is provided in the groove, the movable plate that is in agreement with the groove is screw connected in the connecting block, the connecting plate that is in agreement with the groove is slidably connected on one side of the groove, and the groove, the movable plate and the connecting plate form a closed space, the connecting block is provided with transparent material, the cavity is provided in the connecting block, a plurality of liquid outlet holes that are connected with the cavity are arranged on the bottom of the cavity, and the liquid outlet hole is located on the top of the sponge.

[0008] Through the above technical scheme, the closed space formed by the groove, the movable plate and the connecting plate can protect the sponge in the groove, avoid pollution of the sponge and affect its later use, and when the test fixture is used, the movable plate in the connecting block can be taken out, the bottom of the groove is opened, then the position of the connecting block is fixed through a group of first bolts, the connecting block is installed on the surface of the hydraulic cylinder, the connecting plate is driven to slide upward until it is dislocated with the groove, so that the sponge is not pressed by the movable plate and the connecting plate, and the sponge is tightly attached to the connecting part of the hydraulic cylinder and the piston rod after swelling, the strong oxidizing agent solution with a concentration of about 1% to 5% is delivered into the cavity, the concentration of the strong oxidizing agent solution is prevented from being too high to affect the service life of the hydraulic cylinder, the strong oxidizing agent solution can be discharged through the liquid outlet hole to uniformly wet the sponge, so that the hydraulic cylinder can be driven to move normally, and the transparent structure of the connecting block can be used to observe whether the color of the sponge changes, which helps to intuitively judge the sealing test result of the hydraulic cylinder and effectively test the sealing performance of the hydraulic cylinder, thereby improving the work efficiency.

[0009] The utility model further sets up, the top of connecting block is provided with the injection hole that is connected with the cavity, and the movable connection is provided in the injection hole with the top cap.

[0010] Through the above technical scheme, the strong oxidizing agent solution can be delivered into the cavity through the injection hole, which is convenient to operate, and the design of the top cap can prevent external substances such as dust from entering the cavity, thereby causing the liquid outlet hole to be blocked and affecting the later use.

[0011] The utility model further sets up, the surface of connecting block is provided with a group of thread grooves, the second bolt that is in agreement with the thread groove is screw connected in each thread groove, and the end of the second bolt is rotatably connected to the surface of the connecting plate.

[0012] By adopting the technical scheme, the position of the connecting plate can be adjusted by adjusting the position of the second bolt in the thread groove, and when the connecting plate is adjusted to a proper position, the second bolt can be screwed to press the connecting plate, so that the connecting plate is in close contact with the surface of the hydraulic cylinder, thereby fixing the position of the connecting plate and facilitating better use of the test fixture.

[0013] The utility model further sets up, the surface of connecting plate sets up a set of limit slot, each The limit slot is movably connected with the limit block that unifies with the limit slot, a set of The limit block is fixedly connected in the inner wall of connecting block.

[0014] By adopting the technical scheme, the position of the connecting plate can be adjusted by adjusting the position of the second bolt in the thread groove, and when the connecting plate is adjusted to a proper position, the second bolt can be screwed to press the connecting plate, so that the connecting plate is in close contact with the surface of the hydraulic cylinder, thereby fixing the position of the connecting plate and facilitating better use of the test fixture.

[0015] The utility model further sets up, the surface of connecting plate sets up a set of limit slot, each The limit slot is movably connected with the limit block that unifies with the limit slot, a set of The limit block is fixedly connected in the inner wall of connecting block.

[0016] By adopting the technical scheme, the position of the connecting plate can be adjusted by adjusting the position of the second bolt in the thread groove, and when the connecting plate is adjusted to a proper position, the second bolt can be screwed to press the connecting plate, so that the connecting plate is in close contact with the surface of the hydraulic cylinder, thereby fixing the position of the connecting plate and facilitating better use of the test fixture.

[0017] The utility model further sets up, the surface of connecting plate sets up a set of limit slot, each The limit slot is movably connected with the limit block that unifies with the limit slot, a set of The limit block is fixedly connected in the inner wall of connecting block.

[0018] By adopting the technical scheme, the position of the connecting plate can be adjusted by adjusting the position of the second bolt in the thread groove, and when the connecting plate is adjusted to a proper position, the second bolt can be screwed to press the connecting plate, so that the connecting plate is in close contact with the surface of the hydraulic cylinder, thereby fixing the position of the connecting plate and facilitating better use of the test fixture.

[0019] Summarized above, the utility model mainly has the following beneficial effects:

[0020] The utility model discloses a closed space formed by the recess, the movable plate and the connecting plate can protect the sponge from pollution, when using, the movable plate is taken out and is fixed with the connecting block by the first bolt, the connecting plate is slid to make the sponge not receive the extrusion of the connecting plate and the movable plate and expand to fit the hydraulic cylinder and piston rod connection, then the strong oxidizing agent solution is transported to the cavity, makes it from the liquid outlet hole and wet the sponge, drives the hydraulic cylinder to move, thereby can observe whether the sponge changes color through the transparent structure of the connecting block, helps the intuitive judgment of the hydraulic cylinder sealing test result, and the effective test of the sealing performance of the hydraulic cylinder is convenient, thereby improves work efficiency. DRAWINGS

[0021] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0022] Figure 2 For the utility model Figure 1 Another perspective structure schematic view in the middle;

[0023] Figure 3 For the utility model is a sectional view of the three-dimensional structure;

[0024] Figure 4 For the utility block internal structure detail view of the utility model;

[0025] Figure 5 For the utility model Figure 3 Structure schematic view in the middle A.

[0026] In the drawing: 1, connecting block; 2, positioning hole; 3, first bolt; 4, recess; 5, sponge; 6, connecting plate; 7, movable plate; 8, rubber layer; 9, threaded groove; 10, second bolt; 11, limit block; 12, cavity; 13, liquid outlet hole; 14, liquid injection hole; 15, top cover; 16, limit groove. Specific implementation

[0027] The technical scheme in the embodiment of the utility model will be described clearly and completely in combination with the drawings in the embodiment of the utility model. The embodiments described below by referring to the drawings are exemplary, and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0028] The embodiment of the utility model will be described below according to the overall structure.

[0029] A kind of hydraulic cylinder sealing test fixture, as shown in Figures 1-5 Fig. 1, it includes connecting block 1, the surface of connecting block 1 is provided with a group of positioning holes 2, and the first bolt 3 is threadedly connected in the positioning hole 2, then the surface of the hydraulic cylinder can be extruded by screwing the first bolt 3, so that the position of connecting block 1 can be fixed.

[0030] Then recess 4 is arranged at the bottom of connecting block 1, sponge 5 that is matched with recess 4 is arranged in recess 4, so that sponge 5 is accommodated in recess 4, movable plate 7 that is matched with recess 4 is movably connected in connecting block 1, so that the bottom of sponge 5 can be protected by movable plate 7, connecting plate 6 that is matched with recess 4 is slidably connected on one side of recess 4, and the one side of sponge 5 is protected by connecting plate 6, and recess 4, movable plate 7 and connecting plate 6 form a sealed space, so that recess 4, movable plate 7 and connecting plate 6 can be used to protect at the same time, and connecting block 1 is made of transparent material, so that whether the color of sponge 5 changes can be observed through connecting block 1, which is convenient for intuitively judging the result of hydraulic cylinder sealing test.

[0031] At the same time, the cavity 12 is arranged in the connecting block 1, the bottom of the cavity 12 is provided with a plurality of liquid outlets 13 connected with the cavity 12, and the liquid outlets 13 are located at the top of the sponge 5. Therefore, the strong oxidizing agent solution can be uniformly soaked in the sponge 5 by conveying the strong oxidizing agent solution into the cavity 12 and then discharging the strong oxidizing agent solution through the liquid outlets 13. The liquid injection hole 14 connected with the cavity 12 is arranged at the top of the connecting block 1. The strong oxidizing agent solution can be conveyed into the cavity 12 through the liquid injection hole 14. The movable top cover 15 is arranged in the liquid injection hole 14. The opening and closing of the liquid injection hole 14 can be realized through the top cover 15. The opening and closing of the liquid injection hole 14 can be realized through the top cover 15. The outside objects such as dust and other substances can be prevented from entering the cavity 12 through the liquid injection hole 14, so as to affect the use of the test fixture in the later period.

[0032] Therefore, when the test fixture is used, the movable plate 7 in the connecting block 1 can be taken out first, so that the bottom of the groove 4 is opened. Then, the position of the connecting block 1 is fixed by a group of first bolts 3, so that it is installed on the surface of the hydraulic cylinder. Then, the connecting plate 6 is driven to slide upward until it is out of position with the groove 4, so that the sponge 5 is not pressed by the movable plate 7 and the connecting plate 6, and expands to tightly fit the connection between the hydraulic cylinder and the piston rod. Then, the strong oxidizing agent solution is conveyed into the cavity 12, so that the strong oxidizing agent solution can be uniformly soaked in the sponge 5. Therefore, the hydraulic cylinder can be driven to normally operate at this time, so that whether the sponge 5 changes color can be observed through the transparent structure of the connecting block 1. This is helpful for intuitively judging the sealing test result of the hydraulic cylinder, and is convenient for effectively testing the sealing performance of the hydraulic cylinder.

[0033] Further, a group of threaded grooves 9 are arranged on the surface of the connecting block 1. A second bolt 10 matched with the threaded groove 9 is threadedly connected in each threaded groove 9. One end of the second bolt 10 is rotatably connected to the surface of the connecting plate 6. Therefore, when the second bolt 10 moves in the threaded groove 9, the position of the connecting plate 6 can be adjusted synchronously. When the connecting plate 6 reaches the appropriate position, the second bolt 10 can be screwed to generate a pressing force on the connecting plate 6, so as to increase the friction between the connecting plate 6 and the surface of the hydraulic cylinder, thereby fixing the position of the connecting plate 6. Meanwhile, the rubber layer 8 is arranged in the connecting plate 6. The connecting plate 6 can be better fitted with the surface of the hydraulic cylinder through the rubber layer 8. The rubber layer 8 can increase the friction between the connecting plate 6 and the hydraulic cylinder, thereby increasing the stability of the connecting plate 6 and better fixing it. A group of limiting grooves 16 are arranged on the surface of the connecting plate 6. A limiting block 11 matched with the limiting groove 16 is movably connected in each limiting groove 16. A group of limiting blocks 11 are fixedly connected to the inner wall of the connecting block 1. The design of the limiting groove 16 and the limiting block 11 is convenient for limiting the movement range of the connecting plate 6, thereby increasing the stability of the movement of the connecting plate 6.

[0034] Meanwhile, the activity plate 7 and the connecting block 1 are connected through threads, facilitating quick installation and dismounting of the activity plate 7, and the activity plate 7 can protect the bottom of the sponge 5, and the top cover 15 and the liquid injection hole 14 are connected through threads, quickly realizing opening and closing of the liquid injection hole 14, and facilitating better use of the test fixture.

[0035] Although the embodiments of the utility model have been shown and described, the specific embodiments are only the explanation of the utility model, and are not the limitation of the utility model, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable way, and the person skilled in the art can make the modification, replacement and change of the embodiments without the creative contribution after reading the specification without departing from the principles and the purpose of the utility model, but as long as in the claim range of the utility model, it is protected by the patent law.

Claims

1. A hydraulic cylinder seal test fixture comprising a connecting block (1), characterized in that: The surface of the connecting block (1) is provided with a set of positioning holes (2), and the first bolt (3) is screwed in the positioning hole (2), the bottom of the connecting block (1) is provided with a groove (4), the groove (4) is provided with a sponge (5) matched with the groove (4), the connecting block (1) is movably connected with a movable plate (7) matched with the groove (4), the groove (4) is slidably connected with a connecting plate (6) matched with the groove (4), and the groove (4), the movable plate (7) and the connecting plate (6) form a sealed space, the connecting block (1) is made of transparent material, the connecting block (1) is provided with a cavity (12), the bottom of the cavity (12) is provided with a plurality of liquid outlet holes (13) connected with the cavity (12), and the liquid outlet holes (13) are located on the top of the sponge (5).

2. The hydraulic cylinder seal test fixture of claim 1, wherein: The top of the connecting block (1) is provided with a liquid injection hole (14) connected with the cavity (12), and the liquid injection hole (14) is movably connected with a top cover (15).

3. The hydraulic cylinder seal test fixture of claim 1, wherein: The surface of the connecting block (1) is provided with a set of threaded grooves (9), each threaded groove (9) is screwedly connected with a second bolt (10) matched with the threaded groove (9), and one end of the second bolt (10) is rotatably connected to the surface of the connecting plate (6).

4. The hydraulic cylinder seal test fixture of claim 1, wherein: The surface of the connecting plate (6) is provided with a set of limiting grooves (16), each limiting groove (16) is movably connected with a limiting block (11) matched with the limiting groove (16), and a set of limiting blocks (11) are fixedly connected to the inner wall of the connecting block (1).

5. The hydraulic cylinder seal test fixture of claim 1, wherein: The movable plate (7) and the connecting block (1) are connected by threads, and the top cover (15) and the liquid injection hole (14) are connected by threads.

6. The hydraulic cylinder seal test fixture of claim 3, wherein: The connecting plate (6) is provided with a rubber layer (8).

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