Hydraulic testing fixture
By introducing a pressing structure and a limiting component into the hydraulic gauge, the problem of piston floating in non-measuring states is solved, thus achieving piston stability and reading accuracy, and improving the reliability and precision of hydraulic pressure testing.
Patent Information
- Application Number
- CN202520028175.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-06
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2035-01-06
AI Technical Summary
In existing hydraulic pressure testing devices, the piston is prone to displacement due to hydraulic oil pressure fluctuations or external interference when not in a measuring state, resulting in unstable measurement values and fluctuating readings, and there is a lack of effective fixing measures.
Design a hydraulic gauge including a frame, a hydraulic cylinder, a piston, a sliding rheostat, and a pressing structure. The pressing structure is fixed to the piston by contact, preventing the piston from moving relative to the sliding rheostat. Combined with a limiting component and a guide post, it provides stable guidance and ensures the stability of the piston in the measurement state.
It effectively prevents piston components from floating, ensuring stable and accurate readings, and improving the reliability and accuracy of hydraulic pressure detection.
Smart Images
Figure CN223581247U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of hydraulic oil pressure detection technology, and more particularly to a hydraulic gauge. Background Technology
[0002] Hydraulic systems, as a crucial technology for transmitting power and controlling motion, rely heavily on the accurate measurement of hydraulic oil pressure. Currently, most commonly used hydraulic pressure detection devices in the industry are based on a design combining a piston and a sliding rheostat. The hydraulic oil moves the piston, causing a change in the electrical signal, which is then used to calculate the hydraulic pressure value. In other words, the piston drives the sliding rheostat to change its resistance, and the pressure is precisely calculated by measuring the change in current. However, despite the high measurement accuracy of these devices, certain technical limitations still exist in practical applications.
[0003] In existing hydraulic pressure testing devices, the piston is prone to displacement due to hydraulic oil pressure fluctuations or external interference when not in a measuring state, leading to unstable or inaccurate measurement values. Furthermore, during measurement, the lack of effective measures to secure the piston causes it to fluctuate, making it difficult to obtain stable readings. These problems not only increase the difficulty of using the equipment but also reduce the reliability of pressure testing.
[0004] To address the aforementioned issues, a hydraulic gauge needs to be designed to ensure the stability of the piston component in non-measuring states and to prevent reading fluctuations during measurement. Utility Model Content
[0005] The purpose of this application is to overcome the shortcomings of the prior art and to propose a hydraulic gauge designed to ensure the stability of the piston component in the non-measuring state and to prevent reading fluctuations during measurement.
[0006] This application is achieved through the following technical solution:
[0007] This application discloses a hydraulic gauge, including a frame, a hydraulic cylinder, a piston, and a sliding rheostat. The frame is fixedly connected to the hydraulic cylinder, the piston passes through the frame and is movably disposed within the hydraulic cylinder, and the piston is slidably connected to the sliding rheostat, which is used to detect changes in resistance. The hydraulic gauge also includes:
[0008] The pressing structure is movably mounted on the frame. When the pressing structure abuts against the piston, the piston cannot move relative to the sliding rheostat, thus preventing the piston from floating.
[0009] In one embodiment of this application, the hydraulic gauge further includes a limiting member, which is sleeved on the piston member, and the piston member is slidably connected to the sliding rheostat through the limiting member.
[0010] In one embodiment of this application, the pressing structure includes a pressing plate and a driving member. The driving member is rotatably connected to the frame, the pressing plate is slidably connected to the frame, and the driving member abuts against the pressing plate. The driving member can drive the pressing plate to move toward the limiting member so as to abut against the limiting member.
[0011] In one embodiment of this application, the limiting member has an abutting plane, and the pressing plate can abut against the abutting plane.
[0012] In one embodiment of this application, the drive component is threadedly connected to the frame.
[0013] In one embodiment of this application, the hydraulic gauge further includes a guide post, which is disposed on the frame, and the axial direction of the guide post is the same as the axial direction of the piston component. The limiting component is sleeved on the guide post.
[0014] In one embodiment of this application, the hydraulic gauge further includes an electronic reader, which is electrically connected to the sliding rheostat.
[0015] In one embodiment of this application, the hydraulic gauge further includes a connecting pipe, one end of which is connected to the interior of the hydraulic cylinder, and the other end is connected to an external pipeline.
[0016] Compared with the prior art, the beneficial effects of this application are:
[0017] The frame is fixedly connected to the hydraulic cylinder. The piston passes through the frame and is movably positioned within the hydraulic cylinder. The piston is slidably connected to a sliding rheostat. The piston is displaced by the hydraulic oil in the cylinder, and the sliding rheostat changes its resistance value through this movement, thus achieving the measurement of the hydraulic pressure electrical signal. The pressing structure is movably mounted on the frame. When the pressing structure abuts against the piston, the piston cannot move relative to the sliding rheostat, effectively preventing piston floating. In the measurement state, the temporary fixing function of the drive component and the pressing plate eliminates piston floating, resulting in more stable and accurate readings.
[0018] Other features and advantages of this application will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 A perspective view of a hydraulic fixture provided in an embodiment of this application;
[0021] Figure 2 A perspective view of a hydraulic fixture provided in an embodiment of this application;
[0022] Figure 3 A side view of a hydraulic gauge provided in an embodiment of this application.
[0023] Explanation of reference numerals in the attached figures:
[0024] 10. Hydraulic gauge; 100. Frame; 200. Hydraulic cylinder; 300. Piston; 400. Sliding rheostat; 500. Limiting component; 510. Abutment surface; 600. Guide post; 700. Electronic reader; 800. Pressing structure; 810. Pressing plate; 820. Driving component; 900. Connecting pipe. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0026] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0027] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.
[0028] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0029] 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 application, "multiple" or "several" means two or more, unless otherwise explicitly specified.
[0030] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.
[0031] Please refer to Figures 1 to 3 This application proposes a hydraulic gauge 10, including a frame 100, a hydraulic cylinder 200, a piston 300, and a sliding rheostat 400. The frame 100 is fixedly connected to the hydraulic cylinder 200. The piston 300 passes through the frame 100 and is movably disposed within the hydraulic cylinder 200. The piston 300 is slidably connected to the sliding rheostat 400, which is used to detect changes in resistance. The hydraulic gauge 10 also includes a pressing structure 800, which is movably disposed on the frame 100. When the pressing structure 800 abuts against the piston 300, the piston 300 cannot move relative to the sliding rheostat 400 to prevent the piston 300 from floating.
[0032] Specifically, the frame 100 serves as the support structure for the entire fixture, ensuring the stability of the hydraulic cylinder 200 and providing a supporting foundation for the piston 300 and the sliding rheostat 400. The piston 300 is displaced by the hydraulic oil in the hydraulic cylinder 200, and the sliding rheostat 400 changes its resistance value through its movement, thus achieving the measurement of the hydraulic pressure electrical signal. The pressing structure 800 is movably mounted on the frame 100. When the pressing structure 800 abuts against the piston 300, the piston 300 cannot move relative to the sliding rheostat 400, effectively preventing the piston 300 from floating. The piston 300 can be fixed in the non-measuring state, avoiding displacement problems caused by external interference and ensuring the overall stability of the device. In the measuring state, the temporary fixing function of the drive component 820 and the pressing plate 810 eliminates the floating phenomenon of the piston 300, making the reading more stable and accurate.
[0033] In one embodiment, the hydraulic gauge 10 further includes a limiting member 500, which is sleeved on the piston member 300. The piston member 300 is slidably connected to the sliding rheostat 400 via the limiting member 500. An elastic member is provided between the limiting member 500 and the frame 100. The elastic member is sleeved on the piston member 300 and located at the end of the piston member 300 away from the hydraulic cylinder 200. One end of the elastic member abuts against the limiting member 500, and the other end abuts against the frame 100.
[0034] Specifically, the limiting member 500 is sleeved on and fixedly connected to the piston member 300, and the piston member 300 is slidably connected to the sliding rheostat 400 through the limiting member 500. The limiting member 500 ensures that the piston member 300 is controlled during sliding, provides precise guidance, and effectively reduces the deviation or tilting of the piston member 300 during movement. At the same time, the limiting member 500 provides a stable connection point with the pressing structure 800, allowing the pressing plate 810 to contact the piston member 300 more firmly and apply pressure, thereby further improving the stability of the piston member 300. The presence of the limiting member 500 optimizes the overall cooperation between the piston member 300 and the sliding rheostat 400, making the measurement action smoother and more accurate.
[0035] In one embodiment, the pressing structure 800 includes a pressing plate 810 and a driving member 820. The driving member 820 is rotatably connected to the frame 100, and the pressing plate 810 is slidably connected to the frame 100. The driving member 820 abuts against the pressing plate 810 and can drive the pressing plate 810 to move toward the limiting member 500 so that the pressing plate 810 abuts against the limiting member 500. The driving member 820 is threadedly connected to the frame 100.
[0036] Specifically, the driving component 820 is a bolt, threadedly connected to the frame 100 and abutting against the pressing plate 810, which in turn is slidably connected to the frame 100. Rotation of the driving component 820 causes the pressing plate 810 to move along the sliding direction of the frame 100, moving it towards the limiting member 500 and ultimately abutting against it. This design allows for precise control of the pressing plate 810 through simple rotation of the driving component 820, providing reliable fixing force for the piston 300. Simultaneously, the pressing plate 810 can flexibly adapt to position adjustments of the piston 300 and the limiting member 500, ensuring the ease of operation and structural stability of the entire device.
[0037] In one embodiment, the limiting member 500 has an abutting plane 510, and the pressing plate 810 can abut against the abutting plane 510.
[0038] Specifically, during operation, when the driving component 820 pushes the pressing plate 810 toward the limiting component 500, the pressing plate 810 can form a stable contact with the abutting surface 510 of the limiting component 500, ensuring that the pressure applied by the pressing plate 810 is evenly distributed on the surface of the limiting component 500.
[0039] In one embodiment, the hydraulic gauge 10 further includes a guide post 600, which is disposed on the frame 100. The axial direction of the guide post 600 is the same as the axial direction of the piston 300, and the limiting member 500 is sleeved on the guide post 600.
[0040] Specifically, by setting the guide post 600, the limiting member 500 can maintain a precise guiding effect when sliding along the guide post 600, thereby further constraining the movement trajectory of the piston member 300. This design prevents the limiting member 500 from tilting or deviating when sliding, ensuring that the movement of the piston member 300 is always aligned with the sliding rheostat 400, thus improving the accuracy and reliability of the measurement action.
[0041] In one embodiment, the hydraulic gauge 10 further includes an electronic reader 700, which is electrically connected to the sliding rheostat 400.
[0042] Specifically, the sliding rheostat 400 changes its resistance value by the displacement of the piston 300. The electronic reader 700 receives the electrical signal generated by the resistance change and converts it into a pressure value that can be read intuitively. This allows users to obtain accurate pressure data directly through the electronic reader 700 without additional calculations or complicated operations, while also improving the device's ability to provide real-time data feedback during the measurement process.
[0043] In one embodiment, the hydraulic gauge 10 further includes a connecting pipe 900, one end of which is connected to the interior of the hydraulic cylinder 200, and the other end is connected to an external pipe.
[0044] Specifically, the hydraulic gauge 10 can be seamlessly connected to an external hydraulic system, and hydraulic oil flows into the hydraulic cylinder 200 through the connecting pipe 900 to realize real-time measurement of the hydraulic system pressure.
[0045] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A hydraulic gauge, comprising a frame, a hydraulic cylinder, a piston, and a sliding rheostat, wherein the frame is fixedly connected to the hydraulic cylinder, the piston passes through the frame and is movably disposed within the hydraulic cylinder, and the piston is slidably connected to the sliding rheostat, the sliding rheostat being used to detect changes in resistance, characterized in that... The hydraulic gauge also includes: The pressing structure is movably mounted on the frame. When the pressing structure abuts against the piston, the piston cannot move relative to the sliding rheostat, thus preventing the piston from floating.
2. The hydraulic gauge as described in claim 1, characterized in that, The hydraulic gauge also includes a limiting member, which is sleeved on the piston and the piston is slidably connected to the sliding rheostat through the limiting member.
3. The hydraulic gauge as described in claim 2, characterized in that, The pressing structure includes a pressing plate and a driving member. The driving member is rotatably connected to the frame, the pressing plate is slidably connected to the frame, and the driving member abuts against the pressing plate. The driving member can drive the pressing plate to move toward the limiting member so as to abut against the limiting member.
4. The hydraulic gauge as described in claim 3, characterized in that, The limiting member has an abutting plane, and the pressing plate can abut against the abutting plane.
5. The hydraulic gauge as described in claim 3, characterized in that, The drive component is threadedly connected to the frame.
6. The hydraulic gauge as described in claim 2, characterized in that, The hydraulic gauge also includes a guide post, which is disposed on the frame. The axial direction of the guide post is the same as the axial direction of the piston component, and the limiting component is sleeved on the guide post.
7. The hydraulic gauge as described in claim 1, characterized in that, The hydraulic gauge also includes an electronic reader, which is electrically connected to the sliding rheostat.
8. The hydraulic gauge as described in claim 1, characterized in that, The hydraulic gauge also includes a connecting pipe, one end of which is connected to the interior of the hydraulic cylinder, and the other end is connected to an external pipeline.