A hydraulic cylinder strength detection device

By incorporating a pigment dispensing structure and a pressurizing device within the hydraulic cylinder, the problem of the inability to quickly identify leaks in traditional testing methods is solved, enabling rapid and accurate hydraulic cylinder strength testing.

CN224414025UActive Publication Date: 2026-06-26SUQIAN DONGRUN MASCH MFG CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SUQIAN DONGRUN MASCH MFG CO LTD
Filing Date
2025-08-05
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Traditional hydraulic cylinder strength testing methods cannot quickly identify leaks, and transparent water cannot effectively observe the location of leaks in the cylinder body.

Method used

A hydraulic cylinder strength testing device was designed. By setting a pigment injection structure inside the cylinder, water is mixed with pigment before entering the cylinder. The cylinder is pressurized by a pressure plate. When the cylinder strength is unqualified, the colored water is discharged through the cracks, revealing the leakage point.

Benefits of technology

It enables rapid identification of hydraulic cylinder leaks, improving detection efficiency and accuracy.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a kind of hydraulic cylinder strength detection device, including pigment feeding structure, it includes mounting plate, the inside of the placement hole is equipped with two placement holes, two The placement hole is provided with discharging pipe, the outer wall of the discharging pipe is equipped with drain, the top of the discharging pipe is equipped with water inlet, the inside of the discharging pipe is provided with pigment.The utility model design is reasonable, by the pigment feeding structure of being set, water will pass through pigment feeding structure before entering to the inside of cylinder body, then pigment enters to the inside of water, after water enters to the inside of cylinder barrel, subsequent by the pressure disc of being set, the inside of cylinder barrel is pressurized, the pressure of the inside of cylinder barrel is increased, when cylinder barrel strength is unqualified, such as crack etc., water with color can be discharged through crack, can be directly seen leakage point, so leakage point can be checked out quickly.
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Description

Technical Field

[0001] This utility model mainly relates to the field of hydraulic cylinders, and specifically to a hydraulic cylinder strength testing device. Background Technology

[0002] Hydraulic cylinders are core actuators in heavy equipment such as engineering machinery, metallurgical equipment, and ship steering gear. Their structural strength directly affects the operational safety and service life of the equipment. Traditional hydraulic cylinder strength testing mainly relies on the hydrostatic test method, which involves injecting high-pressure liquid into the cylinder and holding the pressure to observe whether leakage or permanent deformation occurs.

[0003] During the operation of specific embodiments, the inventors discovered the following defects:

[0004] However, since water is transparent, when a leak occurs in the tank, the leak cannot be quickly observed.

[0005] It should be noted that the above content falls within the scope of the inventor's technical knowledge. Due to the vast and complex nature of the technical content in this field, the above content of this application does not necessarily constitute prior art. Utility Model Content

[0006] 1. The technical problem to be solved by the utility model:

[0007] This invention provides a hydraulic cylinder strength testing device to solve the technical problems existing in the background art.

[0008] 2. Technical Solution:

[0009] To achieve the above objectives, the technical solution provided by this utility model is as follows: a hydraulic cylinder strength testing device, including a cylinder placement structure, an internal cylinder extrusion structure is provided at the top of the cylinder placement structure, a pigment dispensing structure is provided inside the internal cylinder extrusion structure, and a cylinder body is provided between the cylinder placement structure and the internal cylinder extrusion structure.

[0010] The pigment dispensing structure includes a mounting plate, two placement holes are opened inside the placement hole, a dispensing pipe is arranged between the two placement holes, a drain outlet is opened on the outer wall of the dispensing pipe, a water inlet is opened on the top of the dispensing pipe, and pigment is placed inside the dispensing pipe.

[0011] Furthermore, the cylinder placement structure includes a placement plate, with support legs at the four corners of the bottom of the placement plate, a placement chamber in the middle of the placement plate, two first air-sealing rings at the bottom of the inner wall of the placement chamber, and a water outlet valve in the middle of the placement chamber.

[0012] Furthermore, the internal extrusion structure of the cylinder includes a lifting plate and a second hydraulic rod. The lifting plate has first hydraulic rods on both sides of its bottom. The first hydraulic rods are located on the top of the placement plate. The bottom of the lifting plate has two second air-filled sealing rings. The lifting plate has first sliding holes on both sides and a second sliding hole in the middle. The lifting plate has a top mounting bracket on its top.

[0013] Furthermore, the second hydraulic rod is disposed at the top of the second hydraulic rod, and a pressure plate is disposed at the output end of the second hydraulic rod. The pressure plate is slidably connected to the inside of the cylinder body. Sliding tubes are disposed on both sides of the top of the pressure plate, and an installation chamber is disposed on the outer wall of the sliding tube.

[0014] Furthermore, the inner wall of the installation chamber is connected to the installation plate, and the sliding tube is slidably connected to the second sliding hole.

[0015] 3. Beneficial effects:

[0016] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0017] This invention utilizes a pigment dispensing structure that allows water to pass through before entering the cylinder, where the pigment then enters the water. The water then enters the cylinder itself, and a pressure plate further pressurizes the interior, increasing the internal pressure. If the cylinder's strength is insufficient, such as due to cracks, the colored water will drain through the cracks, making the leak easily visible and allowing for rapid detection. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a three-dimensional structural diagram of the cylinder placement structure of this utility model;

[0020] Figure 3 This is a three-dimensional unfolded schematic diagram of the internal extrusion structure of the cylinder of this utility model;

[0021] Figure 4 This is a three-dimensional unfolded schematic diagram of the pigment dispensing structure of this utility model.

[0022] Figure label:

[0023] 1. Cylinder placement structure; 101. Placement plate; 102. Support leg; 103. Placement chamber; 104. First inflation sealing ring; 105. Water outlet valve; 2. Internal extrusion structure of cylinder; 201. Lifting plate; 202. First hydraulic rod; 203. Second inflation sealing ring; 204. First sliding hole; 205. Second sliding hole; 206. Top mounting bracket; 207. Second hydraulic rod; 208. Pressure plate; 209. Sliding tube; 210. Installation chamber; 3. Pigment dispensing structure; 301. Mounting plate; 302. Placement hole; 303. Discharge pipe; 304. Drain outlet; 305. Water inlet; 4. Cylinder body. Detailed Implementation

[0024] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," "provided with," and "located in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] Example

[0029] See attached document Figure 1-4 A hydraulic cylinder strength testing device includes a cylinder placement structure 1, a cylinder internal extrusion structure 2 is provided on the top of the cylinder placement structure 1, a pigment dispensing structure 3 is provided inside the cylinder internal extrusion structure 2, and a cylinder body 4 is provided between the cylinder placement structure 1 and the cylinder internal extrusion structure 2.

[0030] The pigment dispensing structure 3 includes a mounting plate 301. Two placement holes 302 are provided inside the placement holes 302. A dispensing pipe 303 is provided between the two placement holes 302. A drain outlet 304 is provided on the outer wall of the dispensing pipe 303. A water inlet 305 is provided on the top of the dispensing pipe 303. Pigment is placed inside the dispensing pipe 303. The dispensing pipe 303 is placed into the placement holes 302. Then the mounting plate 301 is placed into the installation chamber 210. Water then enters through the water inlet 305 and exits through the first sliding hole 204, thereby allowing the dye inside the dispensing pipe 303 to enter the water.

[0031] Furthermore, the cylinder placement structure 1 includes a placement plate 101, with support legs 102 at the four corners of the bottom of the placement plate 101, and a placement chamber 103 in the middle of the placement plate 101. Two first air-sealing rings 104 are provided at the bottom of the inner wall of the placement chamber 103, and a water outlet valve 105 is provided in the middle of the placement chamber 103. When it is necessary to test the strength of the cylinder, the cylinder is placed inside the support legs 102, and the inner and outer walls of the cylinder are sealed tightly against the first air-sealing rings 104.

[0032] After the cylinder test is completed, the outlet valve 105 is opened to drain the water from inside the cylinder.

[0033] Furthermore, the internal extrusion structure 2 of the cylinder includes a lifting plate 201 and a second hydraulic rod 207. First hydraulic rods 202 are provided on both sides of the bottom of the lifting plate 201, and are positioned on the top of the placement plate 101. Two second inflatable sealing rings 203 are provided at the bottom of the lifting plate 201. First sliding holes 204 are provided on both sides of the lifting plate 201, and a second sliding hole 205 is provided in the middle of the lifting plate 201. A top mounting bracket 206 is provided on the top of the lifting plate 201, and the second hydraulic rod 207 is positioned on top of the second hydraulic rod 207. The output end of the second hydraulic rod 207 is provided with a pressure plate 208, which is slidably connected to the inside of the cylinder body 4. The top two sides of the pressure plate 208 are provided with sliding tubes 209, and the outer wall of the sliding tube 209 is provided with an installation chamber 210. The inner wall of the installation chamber 210 is connected to the installation plate 301. The sliding tube 209 is slidably connected to the second sliding hole 205. Then, the first hydraulic rod 202 is activated, which drives the lifting plate 201 to move downward. The second inflatable sealing ring 203 provided at the bottom of the lifting plate 201 fits against the inner and outer walls of the top of the cylinder, thereby sealing the cylinder.

[0034] Then, the second hydraulic rod 207 is activated, which drives the pressure plate 208 to move downward, allowing the pressure plate 208 to enter the cylinder. Water then enters the sliding tube 209 through an external water pump. The water then passes through the pigment injection structure 3, carrying away the dye inside the pigment injection structure 3, allowing the dye to enter the water and color it. After that, the water enters the cylinder, filling it completely. Then, the pressure plate 208 continues to move downward, squeezing the water inside the cylinder. When the cylinder strength is insufficient, such as when there are gaps inside, the water will drain out through the gaps, making the leak point directly visible.

[0035] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A hydraulic cylinder strength testing device, characterized in that: include A cylinder placement structure (1) is provided at the top of the cylinder placement structure (1) and an internal cylinder extrusion structure (2) is provided inside the internal cylinder extrusion structure (2). A pigment delivery structure (3) is provided inside the internal cylinder extrusion structure (2). A cylinder body (4) is provided between the cylinder placement structure (1) and the internal cylinder extrusion structure (2). The pigment dispensing structure (3) includes a mounting plate (301), with two placement holes (302) on the inner side of the mounting plate (301), a dispensing pipe (303) between the two placement holes (302), a drain outlet (304) on the outer wall of the dispensing pipe (303), a water inlet (305) on the top of the dispensing pipe (303), and pigment disposed inside the dispensing pipe (303).

2. The hydraulic cylinder strength testing device according to claim 1, characterized in that: The cylinder placement structure (1) includes a placement plate (101), with support legs (102) at the four corners of the bottom of the placement plate (101), a placement chamber (103) in the middle of the placement plate (101), two first air-sealing rings (104) at the bottom of the inner wall of the placement chamber (103), and a water outlet valve (105) in the middle of the placement chamber (103).

3. The hydraulic cylinder strength testing device according to claim 1, characterized in that: The internal extrusion structure (2) of the cylinder includes a lifting plate (201) and a second hydraulic rod (207). The lifting plate (201) has a first hydraulic rod (202) on both sides of its bottom. The first hydraulic rod (202) is located on the top of the placement plate (101). The lifting plate (201) has two second air-filled sealing rings (203) at its bottom. The lifting plate (201) has a first sliding hole (204) on both sides and a second sliding hole (205) in the middle. The lifting plate (201) has a top mounting bracket (206) on its top.

4. The hydraulic cylinder strength testing device according to claim 3, characterized in that: The second hydraulic rod (207) is located at the top of the second hydraulic rod (207). The output end of the second hydraulic rod (207) is provided with a pressure plate (208). The pressure plate (208) is slidably connected to the inside of the cylinder body (4). Sliding tubes (209) are provided on both sides of the top of the pressure plate (208). The outer wall of the sliding tube (209) is provided with an installation chamber (210).

5. The hydraulic cylinder strength testing device according to claim 4, characterized in that: The inner wall of the installation chamber (210) is connected to the installation plate (301), and the sliding tube (209) is slidably connected to the second sliding hole (205).