Cylinder bore measuring instrument
By introducing a U-shaped frame and a moving mechanism into the cylinder inner diameter measuring instrument, and using suction cup fixation and convex plate rotation to achieve stable contact of the contact head, the problem of insufficient instrument stability is solved, ensuring the accuracy of the test results and the convenience of operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANTAI YIFENG SENSOR MEASUREMENT & CONTROL TECH CO LTD
- Filing Date
- 2025-03-14
- Publication Date
- 2026-06-09
AI Technical Summary
The existing cylinder inner diameter measuring instrument lacks stability during the testing process, resulting in inaccurate test results.
A cylinder inner diameter measuring instrument was designed. It consists of a U-shaped frame, a slider, a display panel, a connecting rod, a contact head, and a fixing mechanism. The instrument is stably placed using a suction cup fixing and moving mechanism. The contact head is stably contacted with the part to be measured by the cooperation of the convex plate and the rotating rod.
This technology enables stable detection of the cylinder's inner diameter, avoids inaccurate test results, and improves the stability and ease of operation of the testing instrument.
Smart Images

Figure CN224340925U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hydraulic cylinder inner diameter detection technology, and in particular to a hydraulic cylinder inner diameter measuring instrument. Background Technology
[0002] Hydraulic cylinder inner diameter measuring instruments are mainly used to measure the inner diameter of hydraulic cylinders to ensure they meet design and usage standards. Various types of hydraulic cylinder inner diameter measuring instruments are available on the market, including portable and benchtop devices, suitable for testing scenarios of different scales and needs.
[0003] However, existing cylinder inner diameter measuring instruments are generally operated manually by hand, without any device to stabilize the instrument. This causes inconvenience for operators and results in insufficient overall stability of the instrument during the testing process, affecting the test results. Utility Model Content
[0004] The purpose of this invention is to overcome the shortcomings of the existing technology. By pressing the outer wall of the convex plate against the fixed frame, the display panel and the contact head move downwards, so that the contact head contacts the part to be tested, thereby achieving stable detection of the cylinder inner diameter and avoiding insufficient stability that would affect the test results. This invention provides a cylinder inner diameter detector.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A hydraulic cylinder inner diameter measuring instrument includes a frame, which is U-shaped. Through slots are provided on both sides of the frame, and sliders are slidably connected within these slots. A display panel is provided between the two sliders. A connecting rod is provided at the lower end of the display panel, and a contact head is provided at the lower end of the connecting rod. A bellows is provided between the contact head and the connecting rod. Fixing mechanisms are provided at both ends of the frame for fixing the display panel, and a moving mechanism is provided at the upper end of the frame for moving the display panel.
[0007] Preferably, the fixing mechanism includes a movable frame disposed on the outside of both ends of the frame, the movable frame being O-shaped, and the lower end of the movable frame being provided with a plurality of suction cups arranged at equal intervals.
[0008] Preferably, the moving mechanism includes a through groove formed at the upper end of the frame, a rotating rod rotatably connected to the side wall of the frame through the through groove, a protruding plate provided on the outer wall of the rotating rod, and a damping pad provided at the rotatable connection between the rotating rod and the frame.
[0009] Preferably, the upper end of the display panel is provided with a fixing frame, the fixing frame is U-shaped, and the outer wall of the convex plate is slidably connected to the upper end of the fixing frame.
[0010] Preferably, two connecting grooves are provided at the lower ends of both sides of the frame, and a sliding rod is provided in each connecting groove. A connecting plate is slidably connected to the outer wall of the sliding rod, and the two connecting plates on the same side are connected to the inner wall of the movable frame.
[0011] Preferably, a guide rod is provided in the through groove, the guide rod passes through the slider and is slidably connected to it, the slider and the through groove are elastically connected by a spring, and the spring is sleeved on the outer wall of the guide rod.
[0012] The beneficial effects of this utility model are:
[0013] 1. By pressing the outer wall of the convex plate against the fixed frame, the display panel and the contact head move downwards, allowing the contact head to contact the area to be tested, thereby achieving stable testing of the cylinder's inner diameter and avoiding insufficient stability that could affect the test results.
[0014] 2. By moving the frame, multiple suction cups at the bottom of the frame are connected to the area to be tested, thereby fixing the frame and the detector, ensuring stable placement of the detector, and providing convenience to users. Attached Figure Description
[0015] Figure 1 This is a front view schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is a top view of the overall structure of this utility model;
[0017] Figure 3 This is a bottom view of the overall structure of this utility model.
[0018] In the diagram: 1. Frame, 2. Through slot, 3. Guide rod, 4. Slider, 5. Spring, 6. Display panel, 7. Contact head, 8. Through slot, 9. Rotating rod, 10. Protruding plate, 11. Fixed frame, 12. Corrugated pipe, 13. Connecting slot, 14. Sliding rod, 15. Connecting plate, 16. Moving frame, 17. Suction cup, 18. Connecting rod. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0020] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., 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 utility model and simplifying the description, and do not indicate or imply that the device or element 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 utility model.
[0021] Reference Figure 1-3 The cylinder inner diameter measuring instrument includes a frame 1, which is U-shaped. Through slots 2 are provided on both sides of the frame 1, and sliders 4 are slidably connected within the through slots 2. A display panel 6 is provided between the two sliders 4. A connecting rod 18 is provided at the lower end of the display panel 6, and a contact head 7 is provided at the lower end of the connecting rod 18. A bellows 12 is provided between the contact head 7 and the connecting rod 18. Both ends of the frame 1 are provided with fixing mechanisms for securing it. The fixing mechanisms include movable frames 16 located outside both ends of the frame 1. The movable frames 16 are O-shaped, and multiple suction cups 17 are provided at equal intervals at the lower end of the movable frames 16. By moving the movable frames 16, the multiple suction cups 17 at the lower end of the movable frames 16 are connected to the area to be tested, thereby fixing the frame 1 and the measuring instrument, ensuring stable placement of the measuring instrument, and providing convenience to users.
[0022] The upper end of the frame 1 is provided with a moving mechanism for moving the display panel 6. The moving mechanism includes a through groove 8 opened at the upper end of the frame 1. A rotating rod 9 is rotatably connected to the side wall of the frame 1 through the through groove 8. A protruding plate 10 is provided on the outer wall of the rotating rod 9. A damping pad is provided at the rotatable connection between the rotating rod 9 and the frame 1. By pressing the outer wall of the protruding plate 10 against the fixed frame 11, the display panel 6 and the contact head 7 move downward, so that the contact head 7 contacts the part to be tested, thereby achieving stable testing of the inner diameter of the hydraulic cylinder and avoiding insufficient stability that would affect the test results.
[0023] The upper end of the display panel 6 is provided with a fixing frame 11, which is U-shaped, and the outer wall of the protruding plate 10 is slidably connected to the upper end of the fixing frame 11.
[0024] Two connecting grooves 13 are provided at the lower ends of both sides of the frame 1. Each connecting groove 13 is provided with a sliding rod 14. A connecting plate 15 is slidably connected to the outer wall of the sliding rod 14. Both connecting plates 15 on the same side are connected to the inner wall of the movable frame 16.
[0025] A guide rod 3 is provided inside the through groove 2. The guide rod 3 passes through the slider 4 and is slidably connected to it. The slider 4 and the through groove 2 are elastically connected by a spring 5. The spring 5 is sleeved on the outer wall of the guide rod 3.
[0026] When using this utility model, the frame 1 is placed at the test site by placing the moving device on the test site. The sliding connection between the connecting plate 15 and the slide rod 14, and the connection between the connecting plate 15 and the moving frame 16 are used to move the moving frame 16. This allows the multiple suction cups 17 at the lower end of the moving frame 16 to connect with the test site, thereby fixing the frame 1 and the test instrument. This ensures the test instrument is placed stably and provides convenience for people.
[0027] At this time, rotate the rotating rod 9 (the damping pad restricts the position of the rotating rod 9 after rotation), so that the rotating rod 9 drives the convex plate 10 to rotate. Utilizing the sliding connection between the convex plate 10 and the fixed frame 11, as well as the sliding connection between the slider 4 and the guide rod 3, the outer wall of the convex plate 10 presses against the fixed frame 11, causing the display panel 6 and the contact head 7 to move downwards, so that the contact head 7 contacts the area to be tested, thereby achieving stable testing of the inner diameter of the hydraulic cylinder and avoiding insufficient stability that could affect the test results.
[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A cylinder bore measuring instrument comprising a frame (1), characterized in that, The frame (1) is provided with a through slot (2) on both sides, the through slot (2) is slidably connected with a sliding block (4), a display disc (6) is arranged between the two sliding blocks (4), the lower end of the display disc (6) is provided with a connecting rod (18), the lower end of the connecting rod (18) is provided with a contact head (7), the contact head (7) and the connecting rod (18) are provided with a bellows (12), the frame (1) is provided with a fixing mechanism at both ends for fixing, and the upper end of the frame (1) is provided with a moving mechanism for moving the display disc (6); The fixing mechanism comprises a moving frame (16) arranged outside the frame (1) at both ends, the moving frame (16) is provided with a plurality of suction cups (17) arranged at equal intervals on the lower end of the moving frame (16); The moving mechanism comprises a through slot (8) arranged on the upper end of the frame (1), the through slot (8) and the side wall of the frame (1) are rotatably connected with a rotating rod (9), the outer wall of the rotating rod (9) is provided with a convex plate (10), and the rotating rod (9) and the frame (1) are rotatably connected with a damping gasket; The upper end of the display disc (6) is provided with a fixed frame (11), the fixed frame (11) is provided with a U-shaped frame (11), and the outer wall of the convex plate (10) is slidably connected with the upper end of the fixed frame (11).
2. The cylinder bore measuring apparatus of claim 1, wherein The lower end of the frame (1) is provided with two connecting grooves (13) on both sides, the connecting grooves (13) are provided with a sliding rod (14), the outer wall of the sliding rod (14) is slidably connected with a communication plate (15), and the two communication plates (15) on the same side are connected with the inner wall of the moving frame (16).
3. The cylinder bore measuring apparatus of claim 2, wherein The through slot (2) is provided with a guide rod (3), the guide rod (3) penetrates through the sliding block (4) and is slidably connected with the sliding block (4), the sliding block (4) and the through slot (2) are elastically connected through a spring (5), and the spring (5) is sleeved on the outer wall of the guide rod (3).