A device for measuring the roundness of the inner hole of a hydraulic cylinder

Abstract

The invention discloses a device for measuring the roundness of the inner hole of a cylinder sleeve of a hydraulic oil cylinder, and relates to the technical field of oil cylinder detection. The device comprises a base, a top of the base is provided with a cylinder to be detected, an adaptive positioning component for positioning the cylinder to be detected is provided on the base, an adaptive roundness detection component is provided in the base, and the adaptive roundness detection component is connected to a lifting and rotating drive mechanism; the adaptive roundness detection component comprises a central seat, the central seat is located in the cylinder to be detected and is coaxially arranged therewith, and one side of the central seat is fixedly connected to a second hydraulic side cylinder. The invention can adaptively center the cylinder to be detected by arranging the adaptive positioning component, and can adapt to oil cylinders of various diameters, and can perform roundness detection on the inner walls of multiple cylinders to be detected by arranging the adaptive detection component and the lifting and rotating drive mechanism, and the detection result is intuitively presented in a line manner by adopting a hydraulic linkage method, so that both the detection result can be retained and accurate detection data can be obtained, and the detection effect is good.

Description

Technical Field

[0001] The invention relates to the technical field of oil cylinder detection, in particular to a device for measuring the roundness of an inner hole of a cylinder sleeve of a hydraulic oil cylinder. Background Art

[0002] In the field of industrial production and mechanical manufacturing, hydraulic cylinders are important power transmission and actuators, and their quality and performance directly affect the operating stability and reliability of the entire equipment. The roundness of the cylinder bore is one of the key indicators for measuring the quality of hydraulic cylinders.

[0003] Traditional cylinder bore roundness measurement methods have many limitations. Some measuring devices are only suitable for cylinders of specific diameters. For cylinders of different diameters, different positioning and detection components need to be replaced, which is cumbersome and costly. In addition, common measurement methods often have difficulty in achieving adaptive centering positioning, which affects the accuracy of the measurement results.

[0004] In terms of the presentation of test results, previous methods either failed to display the test results intuitively or failed to effectively retain the results for subsequent analysis and tracing. This made it difficult for operators to obtain and interpret the measurement data, which was not conducive to the accurate assessment of the cylinder quality and the timely discovery of problems.

[0005] In summary, the existing hydraulic cylinder liner inner hole roundness measurement technology has deficiencies in adaptability, positioning accuracy, detection effect and result presentation, and cannot meet the increasingly high requirements of industrial production and quality control. Therefore, it is of great practical significance to develop a cylinder liner inner hole roundness measurement device that can adaptively position, adapt to various diameter cylinders, accurately detect and intuitively present results. Summary of the invention

[0006] The present invention provides a device for measuring the roundness of the inner hole of a cylinder sleeve of a hydraulic oil cylinder, which solves the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A device for measuring the roundness of the inner hole of a cylinder sleeve of a hydraulic oil cylinder comprises a base, a top of the base is provided with a cylinder to be measured, the base is provided with an adaptive positioning component for positioning the cylinder to be measured, a roundness adaptive detection component is provided in the base, and the roundness adaptive detection component is connected to a lifting and rotating driving mechanism;

[0009] The roundness adaptive detection assembly includes a central seat, which is located in the cylinder to be tested and coaxially arranged therewith, one side of the central seat is fixedly connected to the second hydraulic side cylinder, a second telescopic rod is slidably connected in the second hydraulic side cylinder, the second telescopic rod extends to the outside of the second hydraulic side cylinder and is fixedly connected to a ball cover, and a second ball head is rollingly connected in the ball cover;

[0010] The top end of the central seat is coaxially fixedly connected with a lifting column, and the lifting and rotating drive mechanism includes a lifting drive component and a rotating drive component, and the lifting drive component and the rotating drive component are both connected to the lifting column;

[0011] A scribing marking assembly is connected to one side of the top of the lifting column;

[0012] The marking assembly includes a lifting cover rotatably connected to the outside of the lifting column, a first hydraulic side cylinder is fixedly connected to one side of the lifting cover, a first telescopic rod is slidably connected inside the first hydraulic side cylinder, the first telescopic rod extends outside the first hydraulic side cylinder, a marking head is fixedly connected to the side of the first telescopic rod outside the first hydraulic side cylinder, a marking vertical plate is provided on one side of the marking head, the marking head is in contact with the marking vertical plate, and the marking head is fixedly connected to the base;

[0013] A hydraulic channel is provided in the lifting column, and two ends of the hydraulic channel are respectively connected with the first hydraulic side cylinder and the second hydraulic side cylinder.

[0014] As a preferred technical solution of the present invention, the adaptive positioning assembly includes a plurality of side panels fixedly arranged at both ends of the base, and each side panel close to the cylinder to be tested is fixedly connected to a propulsion rod, and the telescopic end of the propulsion rod is fixedly connected to the first ball head.

[0015] As a preferred technical solution of the present invention, a compression spring is fixedly connected between the ball cover and the central seat.

[0016] As a preferred technical solution of the present invention, the lifting drive assembly includes a lifting drive screw rotatably connected to the base, a lifting seat is provided above the base, the lifting column passes through the lifting seat and is rotatably connected thereto, and the lifting drive screw passes through the lifting seat and is threadedly connected thereto.

[0017] As a preferred technical solution of the present invention, the rotary drive assembly includes a motor frame fixedly arranged on the top of the lifting seat, a rotary drive motor is fixedly arranged on the motor frame, the output shaft of the rotary drive motor is coaxially fixedly connected with a driving gear, the outside of the lifting column is coaxially fixedly connected with a passive gear sleeve, and the driving gear is meshingly connected with the passive gear sleeve.

[0018] As a preferred technical solution of the present invention, one side of the lifting cover is fixedly connected to the lifting plate, and the top of the base is fixedly connected to the guide rod, which passes through the lifting plate and is slidably connected thereto.

[0019] As a preferred technical solution of the present invention, the top end of the guide rod is fixedly connected to the top plate, and the top end of the lifting drive screw is rotatably connected to the top plate.

[0020] As a preferred technical solution of the present invention, a side groove is opened on one side of the base, a lifting drive motor is fixed in the side groove, and the output shaft of the lifting drive motor is coaxially fixedly connected with the lifting drive screw.

[0021] As a preferred technical solution of the present invention, a trumpet cover is placed on the top of the cylinder to be tested, and the diameter of the trumpet cover gradually decreases from top to bottom.

[0022] The present invention has the following advantages: the present invention can adaptively center the cylinder to be tested by setting an adaptive positioning component, and can adapt to cylinders of various diameters. By setting an adaptive detection component and a lifting and rotating drive mechanism, the roundness of the inner walls of multiple cylinders to be tested can be detected, and the detection results can be intuitively presented in the form of lines by using a hydraulic linkage. The detection results can be retained and accurate detection data can be obtained, and the detection effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of a device for measuring the roundness of the cylinder sleeve inner hole of a hydraulic cylinder.

[0024] Figure 2 It is a schematic diagram of the three-dimensional cross-sectional structure of a device for measuring the roundness of the cylinder liner inner hole of a hydraulic cylinder.

[0025] Figure 3 The figure is a schematic diagram of the structure of the roundness adaptive detection component in the roundness measurement device of the cylinder sleeve inner hole of the hydraulic cylinder.

[0026] Figure 4 It is a schematic diagram of the three-dimensional cross-sectional structure of the roundness adaptive detection component in the roundness measurement device of the cylinder sleeve inner hole of the hydraulic cylinder.

[0027] Figure 5 It is a structural schematic diagram of the lifting and rotating drive mechanism in the cylinder sleeve inner hole roundness measuring device of the hydraulic cylinder.

[0028] Figure 6 It is a structural schematic diagram of Example 2 of the cylinder sleeve inner hole roundness measuring device of the hydraulic cylinder.

[0029] In the figure: 1. base; 2. cylinder to be tested; 3. lifting column; 4. lifting seat; 5. side groove; 6. lifting drive motor; 7. lifting drive screw; 8. side plate; 9. push rod; 10. first ball head; 11. motor frame; 12. rotation drive motor; 13. driving gear; 14. passive gear sleeve; 15. lifting cover; 16. first hydraulic side cylinder; 17. first telescopic rod; 18. marking head; 19. marking vertical plate; 20. top plate; 21. guide rod; 22. lifting plate; 23. roundness adaptive detection component; 24. hydraulic channel; 25. central seat; 26. second hydraulic side cylinder; 27. second telescopic rod; 28. ball cover; 29. ​​second ball head; 30. compression spring. DETAILED DESCRIPTION

[0030] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0031] It should be noted that the directions or positional relationships indicated by terms such as “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention. Example

[0032] See also Figure 1-5 A device for measuring the roundness of the inner hole of a cylinder sleeve of a hydraulic oil cylinder comprises a base 1, a cylinder 2 to be measured is prevented from being provided on the top of the base 1, an adaptive positioning component for positioning the cylinder 2 to be measured is provided on the base 1, a roundness adaptive detection component 23 is provided in the base 1, and the roundness adaptive detection component 23 is connected to the lifting and rotating driving mechanism;

[0033] The circularity adaptive detection assembly 23 includes a central seat 25, which is located in the cylinder 2 to be tested and is coaxially arranged therewith, one side of the central seat 25 is fixedly connected to a second hydraulic side cylinder 26, a second telescopic rod 27 is slidably connected in the second hydraulic side cylinder 26, the second telescopic rod 27 extends to the outside of the second hydraulic side cylinder 26 and is fixedly connected to a ball cover 28, and a second ball head 29 is rollingly connected in the ball cover 28;

[0034] The top of the central seat 25 is coaxially fixedly connected with a lifting column 3, and the lifting and rotating drive mechanism includes a lifting drive component and a rotating drive component, and the lifting drive component and the rotating drive component are both connected to the lifting column 3;

[0035] A marking assembly is connected to one side of the top of the lifting column 3;

[0036] The marking assembly includes a lifting cover 15 rotatably connected to the outside of the lifting column 3, a first hydraulic side cylinder 16 is fixedly connected to one side of the lifting cover 15, a first telescopic rod 17 is slidably connected inside the first hydraulic side cylinder 16, the first telescopic rod 17 extends to the outside of the first hydraulic side cylinder 16, a marking head 18 is fixedly connected to the side of the first telescopic rod 17 located outside the first hydraulic side cylinder 16, a marking vertical plate 19 is provided on one side of the marking head 18, the marking head 18 is in contact with the marking vertical plate 19, and the marking head 18 is fixedly connected to the base 1;

[0037] A hydraulic channel 24 is provided in the lifting column 3 , and two ends of the hydraulic channel 24 are respectively connected to the first hydraulic side cylinder 16 and the second hydraulic side cylinder 26 .

[0038] The adaptive positioning assembly includes a plurality of side plates 8 fixedly arranged at both ends of the base 1 , and a push rod 9 is fixedly connected to one side of each side plate 8 close to the cylinder 2 to be tested, and the telescopic end of the push rod 9 is fixedly connected to the first ball head 10 .

[0039] A compression spring 30 is fixedly connected between the ball cover 28 and the central seat 25 .

[0040] The lifting drive assembly includes a lifting drive screw 7 rotatably connected to the base 1. A lifting seat 4 is provided above the base 1. The lifting column 3 penetrates the lifting seat 4 and is rotatably connected thereto. The lifting drive screw 7 penetrates the lifting seat 4 and is threadedly connected thereto.

[0041] The rotary drive assembly includes a motor frame 11 fixedly arranged on the top of the lifting seat 4, a rotary drive motor 12 is fixedly arranged on the motor frame 11, an output shaft of the rotary drive motor 12 is coaxially fixedly connected with a drive gear 13, and the outside of the lifting column 3 is coaxially fixedly connected with a passive gear sleeve 14, and the drive gear 13 is meshedly connected with the passive gear sleeve 14.

[0042] One side of the lifting cover 15 is fixedly connected to the lifting plate 22 , and the top of the base 1 is fixedly connected to the guide rod 21 , which penetrates the lifting plate 22 and is slidably connected thereto.

[0043] The top end of the guide rod 21 is fixedly connected to the top plate 20 , and the top end of the lifting drive screw rod 7 is rotatably connected to the top plate 20 .

[0044] A side groove 5 is formed on one side of the base 1 , and a lifting drive motor 6 is fixedly disposed in the side groove 5 . The output shaft of the lifting drive motor 6 is coaxially and fixedly connected with the lifting drive screw 7 . Example

[0045] See also Figure 1-6 The other contents of this embodiment are the same as those of the embodiment 1, except that a trumpet cover is placed on the top of the cylinder 2 to be tested, and the diameter of the trumpet cover gradually decreases from top to bottom.

[0046] During the implementation of the present invention, the cylinder 2 to be tested is first placed on the base 1, and then the multiple propulsion rods 9 are controlled to start simultaneously, and the multiple propulsion rods 9 are pushed together to push the cylinder 2 to be tested, so that the axis of the cylinder 2 to be tested is located at the center of the base 1;

[0047] Then, the lifting drive motor 6 is controlled to start, driving the roundness adaptive detection component 23 to move downward. During the downward movement, multiple second ball heads 29 contact the inner wall of the horn cover. As the diameter of the horn cover gradually decreases from top to bottom, the second telescopic rod 27 is gradually pressed to move toward the second hydraulic side cylinder 26 until the roundness adaptive detection component 23 enters the cylinder 2 to be tested. At this time, under the action of the compression spring 30, the second telescopic rod 27 drives the second ball head 29 to move until the second ball head 29 contacts the inner wall of the cylinder 2 to be tested. At this time, the position of the marking head 18 on the marking vertical plate 19 is the reference position;

[0048] Then, the rotary drive motor 12 is controlled to start, driving the drive gear 13 to rotate, and the drive gear 13 drives the passive gear sleeve 14 and the lifting column 3 to rotate, thereby driving the central seat 25 to rotate, so that the second ball head 29 moves along the inner wall of the cylinder 2 to be tested. If the inner wall of the cylinder 2 to be tested has inaccurate roundness, the ball head will drive the second telescopic rod 27 to move in the second hydraulic side cylinder 26, and under the linkage effect of the hydraulic pressure, the first telescopic rod 17 will be driven to move in the first hydraulic side cylinder 16, thereby causing the marking head 18 to translate, and the marking head 18 draws a horizontal straight line on the marking vertical plate 19. According to the length of the horizontal straight line drawn by the marking head 18 on the marking plate, the roundness data of the cylinder 2 to be tested in the plane where the second ball head 29 is currently located can be observed;

[0049] Then, the lifting drive motor 6 is controlled to start and drive the lifting drive screw 7 to rotate, so that the lifting seat 4 moves down to the set position, and then the above operation is repeated to perform roundness detection on the inner wall of the cylinder 2 to be tested on the next horizontal plane.

[0050] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for measuring the roundness of the inner hole of a cylinder sleeve of a hydraulic oil cylinder, comprising a base (1), a cylinder (2) to be measured is placed on the top of the base (1), It is characterized in that The base (1) is provided with an adaptive positioning component for positioning the cylinder to be tested (2), the base (1) is provided with a roundness adaptive detection component (23), and the roundness adaptive detection component (23) is connected to the lifting and rotating drive mechanism; The circularity adaptive detection assembly (23) comprises a central seat (25), the central seat (25) is located in the cylinder to be tested (2) and is coaxially arranged therewith, one side of the central seat (25) is fixedly connected to a second hydraulic side cylinder (26), a second telescopic rod (27) is slidably connected inside the second hydraulic side cylinder (26), the second telescopic rod (27) extends outside the second hydraulic side cylinder (26) and is fixedly connected to a ball cover (28), and a second ball head (29) is rollingly connected inside the ball cover (28); The top end of the central seat (25) is coaxially fixedly connected to a lifting column (3), and the lifting and rotating drive mechanism comprises a lifting drive component and a rotating drive component, and the lifting drive component and the rotating drive component are both connected to the lifting column (3); A top side of the lifting column (3) is connected to a marking assembly; The marking assembly comprises a lifting cover (15) rotatably connected to the outside of the lifting column (3); a first hydraulic side cylinder (16) is fixedly connected to one side of the lifting cover (15); a first telescopic rod (17) is slidably connected inside the first hydraulic side cylinder (16); the first telescopic rod (17) extends outside the first hydraulic side cylinder (16); a marking head (18) is fixedly connected to the side of the first telescopic rod (17) outside the first hydraulic side cylinder (16); a marking vertical plate (19) is provided on one side of the marking head (18); the marking head (18) is in contact with the marking vertical plate (19); and the marking head (18) is fixedly connected to the base (1); A hydraulic channel (24) is provided in the lifting column (3), and two ends of the hydraulic channel (24) are respectively connected to the first hydraulic side cylinder (16) and the second hydraulic side cylinder (26).

2. The roundness measuring device for the inner hole of the cylinder sleeve of the hydraulic oil cylinder according to claim 1, It is characterized in that The adaptive positioning assembly comprises a plurality of side plates (8) fixedly arranged at both ends of the base (1), and a propulsion rod (9) is fixedly connected to one side of each side plate (8) close to the cylinder to be tested (2), and the telescopic end of the propulsion rod (9) is fixedly connected to the first ball head (10).

3. The roundness measuring device for the inner hole of the cylinder sleeve of the hydraulic oil cylinder according to claim 1, It is characterized in that A compression spring (30) is fixedly connected between the ball cover (28) and the central seat (25).

4. The roundness measuring device for the inner hole of the cylinder sleeve of the hydraulic oil cylinder according to claim 1, It is characterized in that The lifting drive assembly comprises a lifting drive screw (7) rotatably connected to the base (1); a lifting seat (4) is provided above the base (1); a lifting column (3) passes through the lifting seat (4) and is rotatably connected thereto; and the lifting drive screw (7) passes through the lifting seat (4) and is threadedly connected thereto.

5. The roundness measuring device for the inner hole of the cylinder sleeve of the hydraulic oil cylinder according to claim 1, It is characterized in that The rotary drive assembly comprises a motor frame (11) fixedly arranged at the top end of the lifting seat (4), a rotary drive motor (12) being fixedly arranged on the motor frame (11), an output shaft of the rotary drive motor (12) being coaxially fixedly connected to a drive gear (13), an exterior of the lifting column (3) being coaxially fixedly connected to a passive gear sleeve (14), and the drive gear (13) being meshingly connected to the passive gear sleeve (14).

6. The roundness measuring device for the inner hole of the cylinder sleeve of the hydraulic oil cylinder according to claim 5, It is characterized in that One side of the lifting cover (15) is fixedly connected to the lifting plate (22), and the top end of the base (1) is fixedly connected to the guide rod (21), which passes through the lifting plate (22) and is slidably connected thereto.

7. The hydraulic cylinder liner inner hole roundness measuring device according to claim 6, It is characterized in that The top end of the guide rod (21) is fixedly connected to the top plate (20), and the top end of the lifting drive screw rod (7) is rotatably connected to the top plate (20).

8. The device for measuring the roundness of the cylinder liner inner hole of the hydraulic cylinder according to claim 4, It is characterized in that A side groove (5) is provided on one side of the base (1), a lifting drive motor (6) is fixedly arranged in the side groove (5), and an output shaft of the lifting drive motor (6) is coaxially fixedly connected to the lifting drive screw (7).

9. The hydraulic cylinder liner inner hole roundness measuring device according to claim 1, It is characterized in that A trumpet cover is placed on the top of the cylinder (2) to be tested, and the diameter of the trumpet cover gradually decreases from top to bottom.

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