Air tightness detection equipment for hydraulic cylinder

Abstract

The utility model discloses hydraulic cylinder airtightness detection equipment, which comprises a shell, an observation window is fixed on the surface of the shell, a lifting assembly is arranged on the upper surface of the shell, a supporting plate is arranged on the surface of the lifting assembly, a fixing assembly is connected on the surface of the supporting plate, and an extrusion assembly is arranged above the supporting plate. According to the utility model, when a user uses the device, through the arrangement of a corresponding structure, a large amount of water is placed in the shell, and the detected hydraulic cylinder is wrapped by the water, so that the detection efficiency of the hydraulic cylinder can be higher, the hydraulic cylinder fixed through the elastic force of the spring can be driven by the lifting assembly to ascend and descend, the whole detection process is more automatic, and the detection efficiency is improved. Meanwhile, the extrusion assembly can automatically extrude under the assistance of a pressure sensor through driving of a gear, so that the detection result is more visual.

Description

Technical Field

[0001] The utility model relates to the field of air tightness detection, in particular to an air tightness detection device for a hydraulic cylinder. 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, so it is widely used in the hydraulic systems of various machines. The hydraulic cylinder is basically composed of a cylinder barrel and a cylinder head, a piston and a piston rod, a sealing device, a buffer device and an exhaust device. When using the hydraulic cylinder, the internal air tightness must be ensured, otherwise the overall use of the hydraulic cylinder is easily affected due to insufficient air tightness during use. Therefore, air tightness detection equipment is required to detect the air tightness of the hydraulic cylinder.

[0003] A hydraulic cylinder air tightness detection device is disclosed in a Chinese patent, and its patent number is CN217953796U. In the patent, a hydraulic cylinder air tightness detection device involves the technical field of air tightness detection equipment. A clamping screw is fixedly connected to the end of the lower surface of the connecting plate away from the handle, and the lower end of the clamping screw passes through the detection plate and is fixedly connected to the upper baffle, the lower end of the upper baffle is fixedly connected to a telescopic rod, the lower end of the telescopic rod is fixedly connected to the lower baffle, a support spring is sleeved on the telescopic rod, and the lower end of the lower baffle is fixedly connected to a detection cylinder. Introduce a certain amount of gas into the hydraulic cylinder, close the air outlet valve and the air inlet valve, and then push the detection cylinder downward to the upper end of the hydraulic cylinder by turning the handle at the upper end of the compression screw. The output end of the hydraulic cylinder abuts against the pressure sensor. Continue to turn the handle, the upper baffle and the lower baffle compress the support spring to apply a detection force to the detection cylinder. When the pressure value is displayed on the pressure display, pass the limit stop rod through the connecting plate and extend it into the limit groove to fix the position of the connecting plate and the compression screw.

[0004] The above-mentioned published patents have the following disadvantages:

[0005] (1) The prior art uses a method of spraying soapy water to detect the hydraulic cylinder. This method requires manual spraying of the joints of the hydraulic cylinder multiple times, which consumes a certain amount of manpower and may also cause some positions to be unable to be detected by soapy water, thereby affecting the results of the air tightness test.

[0006] (2) In the prior art, when using equipment to detect the air tightness of a hydraulic cylinder, it is necessary to manually fix the hydraulic cylinder to be tested on the surface of the equipment. This method affects the efficiency of the equipment in detecting the air tightness of the hydraulic cylinder, and it is necessary to disassemble and assemble the hydraulic cylinder multiple times.

[0007] (3) When the detection equipment in the prior art detects a leak in the hydraulic cylinder, it is necessary to observe the leaking part with human eyes. However, the spraying method often requires careful observation to see the leaking position, which is troublesome to observe. Utility Model Content

[0008] The technical problem to be solved by the utility model is to overcome the above technical defects and provide a hydraulic cylinder air tightness detection device.

[0009] In order to solve the above problems, the utility model proposes the following technical solutions:

[0010] A hydraulic cylinder air tightness detection device, comprising: a shell, a cavity is opened inside the shell, a support leg is installed on the bottom surface of the shell, and an observation window is installed on the surface of the shell;

[0011] A lifting assembly, the lifting assembly is fixed to one side of the upper end of the shell, and the lifting assembly includes a driving motor 1, a long screw is installed at the output end of the driving motor 1, a linkage ring is slidably connected on the surface of the long screw, a ball is installed between the long screw and the linkage ring, and there are multiple balls;

[0012] A support plate, the support plate is fixedly connected to the surface of the linkage ring;

[0013] A fixing assembly, the fixing assembly is fixedly connected to the surface of the support plate, the fixing assembly comprises a slide bar, the surface of the slide bar is slidably connected to a clamping plate, a spring is installed on the surface of the slide bar, and the spring is fixedly connected to a surface of one side of the clamping plate;

[0014] An extrusion assembly is fixedly connected to the upper end of the support plate, and the extrusion assembly includes a fixed frame, a second drive motor is installed on the surface of the fixed frame, a small gear is installed at the output end of the second drive motor, a large gear is installed at the meshing position of the small gear, a fixing ring is provided on the inner side of the large gear, a short screw is threadedly connected to the inner side of the fixing ring, a fixing cylinder is fixedly connected to the bottom end of the short screw, and a pressure sensor is installed on the inner side of the fixing cylinder.

[0015] Furthermore, a stopper 1 is installed at the upper end of the long screw, and the diameter of the stopper 1 is greater than the diameter of the long screw.

[0016] Furthermore, a limiting rod is slidably connected to the inner side of the support plate, the limiting rod is fixedly connected to one side of the upper end of the shell, and the upper end of the limiting rod is fixedly connected to the limiting block.

[0017] Furthermore, a support block is installed on one side of the upper surface of the shell, a slide bar is installed on the surface of the support block, and the slide bar is slidably connected to the surface of the support plate.

[0018] Furthermore, a rubber pad is installed on the surface of the clamping plate.

[0019] Furthermore, a second stopper is installed at the upper end of the short screw, and the second stopper is located above the fixed frame.

[0020] Compared with the prior art, the beneficial effects achieved by this new method are:

[0021] (1) The utility model is provided with a shell, and a large amount of water is placed inside the shell so that the water can submerge the hydraulic cylinder to be inspected, thereby ensuring that the inspection process of the hydraulic cylinder by the equipment can be more convenient, without spraying water on the surface of the hydraulic cylinder little by little, thereby improving the inspection efficiency.

[0022] (2) The fixing assembly provided in the utility model can make the clamping plate directly fit on the surface of the hydraulic cylinder through the elastic force of the spring, making it more convenient to fix the clamping plate to the hydraulic cylinder, and through two driving motors, respectively drive the hydraulic cylinder to descend into the inside of the shell and squeeze the hydraulic cylinder with the assistance of the pressure sensor, making the entire detection operation of the equipment more automated.

[0023] (3) The utility model arranges an extrusion assembly to be fixed on the output end of the hydraulic cylinder, and the hydraulic cylinder is squeezed under the drive of the second driving motor. Whether bubbles are generated in the water is observed through a transparent observation window, making the air tightness detection process of the hydraulic cylinder more convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The utility model is a three-dimensional diagram of a hydraulic cylinder air tightness detection device.

[0025] Figure 2 The utility model is an internal stereogram of a hydraulic cylinder air tightness detection device.

[0026] Figure 3 The utility model is a cross-sectional view of a hydraulic cylinder air tightness detection device.

[0027] Figure 4 The utility model is a schematic diagram of an extrusion component of a hydraulic cylinder air tightness detection device.

[0028] As shown in the figure: 1. Shell; 2. Observation window; 3. Lifting assembly; 4. Support plate; 5. Fixing assembly; 6. Extrusion assembly; 101. Support leg; 301. Drive motor 1; 302. Long screw; 321. Block 1; 303. Linkage ring; 304. Ball; 401. Limit rod; 402. Limit block; 403. Support block; 404. Slide bar; 501. Slide bar; 502. Clamping plate; 503. Rubber pad; 504. Spring; 601. Fixing frame; 602. Drive motor 2; 603. Small gear; 604. Large gear; 605. Fixing ring; 606. Short screw; 607. Block 2; 608. Fixing cylinder; 609. Pressure sensor. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0030] like Figures 1 to 4 As shown, a hydraulic cylinder air tightness detection device includes a shell 1, the shell 1 supports the device through a support leg 101 installed on the bottom surface, and an observation window 2 is arranged on the surface of the shell 1 for convenient observation of the internal detection situation. The lifting component 3 located at the upper end of the shell 1 is provided with a driving motor 301, and the long screw 302 at the output end is driven to rotate by the driving motor 301, so that the long screw 302 drives the surface linkage ring 303 to slide up and down through a plurality of rolling balls 304, so that the linkage ring 303 can drive the support plate 4 to rise and fall, and the fixing component 5 on the surface of the support plate 4 is provided with a slide bar 501, so that the slide bar 501 The sliding clamping plate 502 is clamped on the lower end surface of the hydraulic cylinder by a spring 504 fixed on one side, and the extrusion assembly 6 located at the upper end of the support plate 4 is provided with a fixed frame 601 fixedly connected to the driving motor 2 602, so that the driving motor 2 602 can drive the small gear 603 at the output end to rotate, so that the large gear 604 at the meshing point of the small gear 603 can rotate accordingly, so that the fixing ring 605 on the inner side of the large gear 604 can drive the short screw 606 to move up and down during the rotation process, so that the fixing tube 608 at the bottom end of the short screw 606 squeezes the output end of the hydraulic cylinder with the assistance of the pressure sensor 609.

[0031] A stopper 321 having a larger diameter than the long screw 302 is provided on the long screw 302 .

[0032] Through the above technical solution, under the limitation of the stopper 321, when the driving motor 301 drives the long screw 302 to rotate, the linkage ring 303 on the surface of the long screw 302 is prevented from detaching from its surface during the movement.

[0033] A limiting rod 401 fixed to the upper end of the housing 1 is disposed on the inner side of the support plate 4 , and a limiting block 402 is disposed on the upper end of the limiting rod 401 .

[0034] Through the above technical solution, the limiting rod 401 is used to limit the support plate 4, so that it is prevented from rotating along with the long screw 302 of the lifting assembly 3 during the lifting process using the lifting assembly 3, making it more stable during the lifting process.

[0035] A slide bar 404 is provided on the surface of a support block 403 provided on one side of the upper surface of the housing 1 , so that the support block 403 can slide on the surface of the support plate 4 through the slide bar 404 .

[0036] Through the above technical solution, the support plate 4 can move straight up and down during the lifting process through the limitation of the slide bar 404, avoiding deviation from the original moving trajectory.

[0037] A rubber pad 503 is provided on the surface of the clamping plate 502 .

[0038] Through the above technical solution, the rubber pad 503 is attached to the surface of the hydraulic cylinder to prevent the clamping plate 502 from causing damage to the surface of the hydraulic cylinder, and it can also make the clamping more firmly to avoid sliding.

[0039] A second stopper 607 located above the fixing frame 601 is disposed at the upper end of the short screw rod 606 .

[0040] Through the above technical solution, under the shielding of the second stopper 607, it is ensured that the short screw 606 will not be separated from the connection with the fixing ring 605 when driving the fixing cylinder 608 to descend, and it is also possible to avoid excessive squeezing force on the hydraulic cylinder.

[0041] During use, when the user uses the hydraulic cylinder air tightness detection equipment, the test water is put into the inner side of the shell 1, and the hydraulic cylinder to be tested is placed on the surface of the support plate 4. Under the elastic force of the spring 504, the clamping plate 502 can move to both sides, and the lower end of the hydraulic cylinder is fixed by the rubber pad 503. The fixed cylinder 608 is used to contact the output end of the hydraulic cylinder. Under the drive of the lifting component 3, the support plate 4 can be limited by the limit rod 401 and move downward into the water, so that the water source can cover the hydraulic cylinder. The drive motor 2 602 is started, and under the drive of the small gear 603, the large gear 604 can rotate, thereby driving the fixed cylinder 608 under the short screw 606 to descend through the fixed ring 605. Through the induction of the pressure sensor 609, the hydraulic cylinder is squeezed, and it is observed whether there are bubbles in the water to realize the air tightness detection of the hydraulic cylinder.

[0042] The electrical components appearing in this article are all connected to an external main controller and 220V AC power, and the main controller can be a conventional known device that controls a computer, etc. The specific implementation method of the present disclosure omits the detailed description of known functions and known components. To ensure the compatibility of the equipment, the operating methods used are consistent with the parameters of marketed equipment.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0044] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A hydraulic cylinder air tightness detection device, characterized in that ,include: A shell (1), wherein a cavity is provided inside the shell (1), a support leg (101) is installed on the bottom surface of the shell (1), and an observation window (2) is installed on the surface of the shell (1); A lifting assembly (3), the lifting assembly (3) is fixed to one side of the upper end of the shell (1), the lifting assembly (3) comprises a driving motor (301), a long screw (302) is installed at the output end of the driving motor (301), a linkage ring (303) is slidably connected to the surface of the long screw (302), and the long screw (302) A ball (304) is installed between the linkage ring (303), and there are a plurality of balls (304); A support plate (4), wherein the support plate (4) is fixedly connected to the surface of the linkage ring (303); A fixing assembly (5), the fixing assembly (5) is fixedly connected to the surface of the support plate (4), the fixing assembly (5) comprises a sliding rod (501), the surface of the sliding rod (501) is slidably connected to a clamping plate (502), a spring (504) is installed on the surface of the sliding rod (501), and the spring (504) is fixedly connected to a surface of one side of the clamping plate (502); An extrusion assembly (6), wherein the extrusion assembly (6) is fixedly connected to the upper end of the support plate (4), and the extrusion assembly (6) comprises a fixing frame (601), a second drive motor (602) is mounted on the surface of the fixing frame (601), a small gear (603) is mounted on the output end of the second drive motor (602), a large gear (604) is mounted at the meshing position of the small gear (603), a fixing ring (605) is arranged on the inner side of the large gear (604), a short screw (606) is threadedly connected to the inner side of the fixing ring (605), a fixing cylinder (608) is fixedly connected to the bottom end of the short screw (606), and a pressure sensor (609) is mounted on the inner side of the fixing cylinder (608).

2. The hydraulic cylinder air tightness detection device according to claim 1, characterized in that: A stopper block (321) is installed at the upper end of the long screw (302), and the diameter of the stopper block (321) is larger than the diameter of the long screw (302).

3. The hydraulic cylinder air tightness detection device according to claim 1, characterized in that: The inner side of the support plate (4) is slidably connected to a limit rod (401), the limit rod (401) is fixedly connected to one side of the upper end of the shell (1), and the upper end of the limit rod (401) is fixedly connected to a limit block (402).

4. The hydraulic cylinder air tightness detection device according to claim 1, characterized in that: A support block (403) is installed on one side of the upper surface of the shell (1), a sliding bar (404) is installed on the surface of the support block (403), and the sliding bar (404) is slidably connected to the surface of the support plate (4).

5. The hydraulic cylinder air tightness detection device according to claim 1, characterized in that: A rubber pad (503) is installed on the surface of the clamping plate (502).

6. The hydraulic cylinder air tightness detection device according to claim 1, characterized in that: A second stopper (607) is installed at the upper end of the short screw rod (606), and the second stopper (607) is located above the fixed frame (601).

Images