Device for assisting measuring cylinder meter in measuring diameter of deep cylinder

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By designing auxiliary devices, the swing of the feedback rod is controlled by using push and pull rods and pull wires, combined with the camera and display equipment, the error and operation difficulties of the cylinder gauge when measuring the long cylinder is solved, and the accurate measurement of the long cylinder is achieved.

CN222317924UActive Publication Date: 2025-01-07刘承宗

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Patent Information

Application Number: CN202421190683.7
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-05-29
Publication Date: 2025-01-07
Estimated Expiration: 2034-05-29

AI Technical Summary

Technical Problem

When measuring a long cylinder cylinder, the feedback rod is too long, and when the cylinder length exceeds 3 meters, it is difficult to place and measure standing upright, and there is a lack of tools that can facilitate accurate measurement.

Method used

An auxiliary device is designed, including push-pull rod, sleeve, support rod, pull wire and camera. The push-pull rod lengthening structure and pull wire are used to control the swing of the feedback rod to avoid directly lengthening the feedback rod. The camera is used to monitor and display the readings of the equipment in real time to achieve the Accurate measurement of long cylinder.

Benefits of technology

The device can accurately measure the long cylinder placed horizontally without increasing measurement errors, meet the measurement needs of the long cylinder, avoid errors caused by excessive feedback rods, and simplify the long cylinder measurement process.

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Abstract

The utility model relates to the technical field of cylinder barrel measurement, in particular to a device for assisting a measuring cylinder meter in measuring the diameter of a deep barrel. Comprising a push-pull rod, a sleeve, a supporting rod, a pull wire and a camera, a measuring cylinder meter comprises a measuring rod, a feedback rod and a dial indicator, one end of the feedback rod is vertically connected with the measuring rod, the other end of the feedback rod is connected with the dial indicator, the sleeve sleeves the measuring rod of the measuring cylinder meter, one end of the push-pull rod is connected to the sleeve, and the push-pull rod extends in the same direction as the other end of the feedback rod in a lengthened mode. The two sides of the sleeve are connected with supporting rods respectively, the pull wire is connected to the push-pull rod and hooks the feedback rod, and the camera is connected to the push-pull rod and aligns to the dial indicator. The auxiliary device can be used for carrying out auxiliary measurement on the long cylinder barrel which is horizontally placed, and does not generate measurement data, so that no extra measurement error is caused to the cylinder measuring meter.

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Description

Technical Field

[0001] The utility model relates to the technical field of cylinder measurement, in particular to a device used for assisting a cylinder gauge in measuring the diameter of a deep cylinder. Background Art

[0002] The cylinder gauge, also known as the internal diameter micrometer, is a comparative measuring tool used to measure the aperture, mainly used to measure the roundness, cylindricity error or wear of the cylinder. The cylinder gauge is used by placing the movable measuring rod into the cylinder, then pressing the feedback rod of the cylinder gauge with your hand, slowly moving the feedback rod to make it parallel to the axis of the cylinder, moving the cylinder gauge left or right or up and down, finding the shortest distance position of the measuring rod, and reading the minimum value indicated by the micrometer pointer, that is, the minimum value of the cylinder inner diameter.

[0003] Especially for cylinder structures such as hydraulic cylinders, the accuracy requirement for cylinder gauges is generally 0.01 mm. Since the feedback rod is directly connected to the dial gauge, its slight deformation will be intuitively fed back to the dial gauge. In order to ensure that the accuracy can be controlled within 0.01 mm, the length of the feedback rod should not be too long, generally around 0.5 meters. However, for cylinders with longer lengths, such as cylinders with a length of more than 1 meter, the shorter feedback rod length cannot meet the measurement requirements of longer cylinders. Therefore, there are extended cylinder gauge products on the market, which lengthen the feedback rod connected to the dial gauge. When used horizontally, the overly long feedback rod will cause an error of about 0.1 mm due to its own weight. This error greatly exceeds the accuracy requirement and has affected the accuracy of the measurement; if you want to overcome the problem of the feedback rod's own weight falling, you can only place the cylinder upright for measurement, but when the length of the cylinder exceeds 3 meters, it is very difficult to place it upright for measurement. Therefore, there is a lack of tools on the market that can facilitate accurate measurement of long cylinders. Utility Model Content

[0004] The utility model provides a device for assisting a cylinder gauge in measuring the diameter of a deep cylinder, aiming to provide a tool which can conveniently and accurately measure a long cylinder.

[0005] The utility model provides a device for assisting a cylinder gauge in measuring a deep cylinder diameter, comprising a push-pull rod, a sleeve, a support rod, a pull wire, and a camera. The cylinder gauge comprises a measuring rod, a feedback rod, and a dial indicator. One end of the feedback rod is vertically connected to the measuring rod, the other end of the feedback rod is connected to the dial indicator, the sleeve is sleeved on the measuring rod of the cylinder gauge, one end of the push-pull rod is connected to the sleeve, the push-pull rod is extended in the same direction as the other end of the feedback rod, both sides of the sleeve are connected to support rods, the pull wire is connected to the push-pull rod and hooks the feedback rod, and the camera is connected to the push-pull rod and aimed at the dial indicator.

[0006] As a further improvement of the utility model, the push-pull rod is provided with a wire loop, one end of the pull wire is fixed on the push-pull rod, and the other end of the pull wire passes around the feedback rod, passes through the wire loop and extends outward, and the swing of the feedback rod is controlled by pulling the other end of the pull wire.

[0007] As a further improvement of the utility model, the device for assisting the cylinder gauge in measuring the diameter of the deep cylinder also includes a winding drum, and the other end of the pulling wire is wound on the winding drum.

[0008] As a further improvement of the present invention, the distance between the ends of the support rods on both sides of the sleeve is less than or equal to the inner diameter of the cylinder to be measured.

[0009] As a further improvement of the utility model, the device for assisting the cylinder gauge in measuring the diameter of the deep cylinder also includes a buffer sleeve, which is connected to the end of the support rod, and the end of the support rod contacts the inner wall of the cylinder to be measured through the buffer sleeve.

[0010] As a further improvement of the utility model, the device for assisting the cylinder gauge in measuring the diameter of the deep cylinder also includes a data line, one end of the data line is connected to a camera, and the other end of the data line is externally connected to a display device.

[0011] As a further improvement of the utility model, the push-pull rod is formed by splicing multiple push-pull rods.

[0012] As a further improvement of the present invention, the support rod is formed by splicing together multiple sections of sub-support rods.

[0013] As a further improvement of the present invention, the inner diameter of the sleeve is larger than the outer diameter of the measuring rod.

[0014] As a further improvement of the utility model, the push-pull rod is perpendicular to the support rod.

[0015] The beneficial effects of the utility model are as follows: the auxiliary device can assist in measuring a long cylinder placed horizontally, and the error caused by the excessive fall of the feedback rod can be avoided by extending the structure externally to the push-pull rod instead of directly adding it to the feedback rod, and the swing of the feedback rod can be controlled by the pull line to adjust the reading to complete the measurement. The auxiliary device itself does not generate measurement data, so it will not cause additional measurement errors to the cylinder gauge. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a left-angle overall structural diagram of the device of the utility model;

[0017] Figure 2 It is the overall structural diagram of the device of the utility model from the right perspective;

[0018] Figure 3It is a partial structural diagram of the device of the utility model from the left perspective;

[0019] Figure 4 It is a partial structural diagram of the device of the utility model from the right perspective. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0021] like Figures 1 to 4 As shown, the utility model is a device for assisting a cylinder gauge in measuring a deep cylinder diameter, comprising a push-pull rod 2, a sleeve 3, a support rod 4, a pull wire 5, and a camera 6. The cylinder gauge 1 comprises a measuring rod 11, a feedback rod 12, and a dial indicator 13. One end of the feedback rod 12 is vertically connected to the measuring rod 11, and the other end of the feedback rod 12 is connected to the dial indicator 13. The sleeve 3 is sleeved on the measuring rod 11 of the cylinder gauge 1, one end of the push-pull rod 2 is connected to the sleeve 3, the push-pull rod 2 is extended along the same direction as the other end of the feedback rod 12, support rods 4 are connected on both sides of the sleeve 3, the pull wire 5 is connected to the push-pull rod 2 and hooks the feedback rod 12, and the camera 6 is connected to the push-pull rod 2 and aimed at the dial indicator 13.

[0022] The sleeve 3 is sleeved on the measuring rod 11. When the cylinder gauge 1 and the sleeve 3 are placed in the cylinder, the sleeve 3 is pushed forward or backward in the cylinder by the push-pull rod 2, thereby driving the entire cylinder gauge 1 to move synchronously in the cylinder through the contact with the measuring rod 11. After the support rods 4 on both sides of the sleeve 3 move to the measuring position, the support rods 4 contact the inner wall of the cylinder to support the position of the sleeve 3 in the cylinder. The length of the push-pull rod 2 can be determined according to the length of the cylinder to be measured. The push-pull rod 2 is used to send the sleeve 3 and the cylinder gauge 1 into the cylinder, so the length of the push-pull rod 2 can be longer than the length of the cylinder. By pulling the other end of the pull wire 5, the fine-tuning movement of the cylinder gauge 1 left and right or up and down can be controlled to find the shortest distance position of the measuring rod 11. Since the operator cannot see the reading on the dial gauge 13 with the naked eye when the cylinder gauge 1 goes deep into the cylinder, the pointer reading on the dial gauge 13 is monitored in real time by the camera 6, and the monitoring data is transmitted to the rear, so that the operator can clearly see the reading of the dial gauge 13 outside the cylinder.

[0023] The cylinder gauge 1 also includes a positioning plate 14, which is connected to the bottom of the measuring rod 11. The ends of the positioning plate 14 on both sides are arranged to be in an arc structure that fits the inner wall of the cylinder. The measuring rod 11 is vertically arranged at the midpoint of the positioning plate 14. The positioning plate 14 is equivalent to locating a straight line in the circular cross-section of the cylinder. The line perpendicular to the midpoint of the straight line will pass through the center of the circle. Therefore, the shortest distance that can be measured by the position of the measuring cylinder is the diameter of the circular cross-section of the cylinder.

[0024] The push-pull rod 2 is provided with a wire loop 7, one end of the pull wire 5 is fixed on the push-pull rod 2, and the other end of the pull wire 5 passes through the wire loop 7 after passing through the feedback rod 12 and extends outward, and the other end of the pull wire 5 is pulled to control the swing of the feedback rod 12. One end of the pull wire 5 can also be tied to a wire loop 7 of the push-pull rod 2, and then the other end of the pull wire 5 is passed around the feedback rod 12 to hook the cylinder gauge 1, and then passed through other wire loops 7 and extended to the end of the push-pull rod 2, so that the personnel can operate the pull wire 5 at the end of the push-pull rod 2. The two wire loops 7 at the front of the push-pull rod 2 can be close to the feedback rod 12, so that the pull wire 5 can be completely hooked on the feedback rod 12 and will not fall off during the pulling process.

[0025] The device for assisting the cylinder gauge in measuring the diameter of the deep cylinder also includes a winding drum 8, and the other end of the pull wire 5 is wound on the winding drum 8. The pull wire 5 that is too long can be stored in the winding drum 8. When operating, it is only necessary to release the pull wire 5 of the corresponding length according to the length of the push-pull rod 2. This can not only meet the requirements of different pull wire 5 lengths, but also avoid the excess pull wire 5 from being exposed and entangled with other things to affect the measurement. At the same time, the winding drum 8 will be larger than the wire ring 7. When not in use, the winding drum 8 can be stuck in the position of the wire ring 7 after storing the pull wire 5, which is also convenient for the placement of the pull wire 5 and the winding drum 8.

[0026] The distance between the ends of the support rods 4 on both sides of the sleeve 3 is less than or equal to the inner diameter of the cylinder to be measured. Preferably, the distance between the ends of the support rods 4 on both sides can be 70%-95% of the inner diameter of the cylinder to be measured. The distance requirement between the ends of the two support rods 4 can ensure that the structure of the sleeve 3 and the support rod 4 can enter the interior of the cylinder and move freely.

[0027] The device for assisting the cylinder gauge in measuring the diameter of the deep cylinder also includes a buffer sleeve, which is connected to the end of the support rod 4, and the end of the support rod 4 contacts the inner wall of the cylinder to be measured through the buffer sleeve. The buffer sleeve can be made of soft materials such as a rubber sleeve, which can prevent damage to the cylinder when contacting the inside of the cylinder.

[0028] The device for assisting the cylinder gauge in measuring the diameter of the deep cylinder also includes a data line 9, one end of which is connected to the camera 6, and the other end of which is externally connected to a display device. The length of the data line 9 can also be set accordingly according to the length of the push-pull rod 2. The data line 9 transmits the real-time data collected by the camera 6 to the display device at the rear, so that personnel can observe the real-time reading of the dial gauge 13 through the display device at a long distance.

[0029] The push-pull rod 2 is composed of multiple push-pull rods. The push-pull rod 2 can be split into multiple push-pull rods, which is convenient for transportation and storage, and can be flexibly spliced according to the length of the cylinder to be measured. The splicing structure between each push-pull rod can adopt a threaded connection structure, or other structural designs that can achieve docking.

[0030] The support rod 4 is composed of multiple sections of sub-support rods. The support rod 4 can be split into multiple sections of sub-support rods, which is convenient for transportation and storage, and can be flexibly spliced according to the diameter of the inner wall of the cylinder to be measured. The splicing structure between each sub-support rod can adopt a threaded connection structure, or other structural designs that can achieve docking.

[0031] The inner diameter of the sleeve 3 is larger than the outer diameter of the measuring rod 11. The inner diameter of the sleeve 3 is preferably larger than the outer diameter of the measuring rod 11, so as to ensure that the measuring rod 11 will not hit and cause errors when fine-tuning and swinging.

[0032] The push-pull rod 2 is perpendicular to the support rod 4. Since the length direction of the cylinder and the direction of the diameter of the circular cross section of the inner wall are perpendicular to each other, in order to better adapt to the structure of the cylinder, the push-pull rod 2 and the support rod 4 are preferably set to a vertical structure, so that no matter where the push-pull rod 2 goes into the cylinder, the support rods 4 on both sides can be horizontally erected in the cylinder to support the sleeve 3 when they are lowered.

[0033] The working principle of this auxiliary device is:

[0034] First, sleeve 3 is put on the measuring rod 11 of cylinder gauge 1, and then the auxiliary device and cylinder gauge 1 are put into the horizontally placed cylinder barrel, and push the push-pull rod 2 to drive sleeve 3 to move in the cylinder barrel. When sleeve 3 contacts with measuring rod 11, it also drives cylinder gauge 1 to move. After moving to the measuring position, sleeve 3 moves a short distance and then puts down the auxiliary device to prevent sleeve 3 from contacting measuring rod 11 during measurement. At this time, the support rods 4 on both sides of sleeve 3 will contact the inner wall of the cylinder barrel to support the cylinder barrel. The other end of push-pull rod 2 is fixed, and then the pull wire 5 is pulled to move cylinder gauge 1 left and right or up and down. At the same time, the image of the pointer of dial gauge 13 collected by camera 6 is viewed through the display device. When the shortest distance position of measuring rod 11 is found, the minimum value indicated by the pointer of dial gauge 13 is read, that is, the minimum value of the inner diameter of the cylinder barrel. After completing the measurement of one position, push push-pull rod 2 again to the next measuring position and execute the above process.

[0035] The utility model is preferably used for measuring the cylinder barrel of a hydraulic cylinder. The auxiliary device only serves to lengthen a person's hands and eyes. The auxiliary device itself does not generate measurement data. Therefore, using it horizontally will not cause additional measurement errors to the cylinder gauge 1. It can assist in measuring a long cylinder barrel placed horizontally, thereby meeting the demand for accurate measurement of the long cylinder barrel.

[0036] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A device for assisting a cylinder gauge in measuring the diameter of a deep cylinder, characterized in that: It includes a push-pull rod, a sleeve, a support rod, a pull wire, and a camera. The cylinder gauge includes a measuring rod, a feedback rod, and a dial indicator. One end of the feedback rod is vertically connected to the measuring rod, and the other end of the feedback rod is connected to the dial indicator. The sleeve is sleeved on the measuring rod of the cylinder gauge. One end of the push-pull rod is connected to the sleeve. The push-pull rod is extended in the same direction as the other end of the feedback rod. Support rods are connected on both sides of the sleeve. The pull wire is connected to the push-pull rod and hooks the feedback rod. The camera is connected to the push-pull rod and aimed at the dial indicator.

2. The device for assisting a cylinder gauge in measuring the diameter of a deep cylinder according to claim 1, characterized in that: The push-pull rod is provided with a wire loop, one end of the pull wire is fixed on the push-pull rod, and the other end of the pull wire passes through the wire loop after passing around the feedback rod and extends outward, and the swing of the feedback rod is controlled by pulling the other end of the pull wire.

3. The device for assisting a cylinder gauge in measuring the diameter of a deep cylinder according to claim 2, characterized in that: It also includes a wire winding drum, on which the other end of the pull wire is wound.

4. The device for assisting a cylinder gauge in measuring the diameter of a deep cylinder according to claim 1, characterized in that: The distance between the ends of the support rods on both sides of the sleeve is less than or equal to the inner diameter of the cylinder to be measured.

5. The device for assisting a cylinder gauge in measuring the diameter of a deep cylinder according to claim 1, characterized in that: It also includes a buffer sleeve, which is connected to the end of the support rod, and the end of the support rod is in contact with the inner wall of the cylinder to be tested through the buffer sleeve.

6. The device for assisting a cylinder gauge in measuring the diameter of a deep cylinder according to claim 1, characterized in that: It also includes a data line, one end of which is connected to the camera, and the other end of which is externally connected to a display device.

7. The device for assisting a cylinder gauge in measuring the diameter of a deep cylinder according to claim 1, characterized in that: The push-pull rod is formed by splicing a plurality of push-pull rod sections.

8. The device for assisting a cylinder gauge in measuring the diameter of a deep cylinder according to claim 1, characterized in that: The support rod is formed by splicing multiple sub-support rods.

9. The device for assisting a cylinder gauge in measuring the diameter of a deep cylinder according to claim 1, characterized in that: The inner diameter of the sleeve is greater than the outer diameter of the measuring rod.

10. The device for assisting a cylinder gauge in measuring the diameter of a deep cylinder according to claim 1, characterized in that: The push-pull rod is perpendicular to the support rod.