阅读说明：本技术 一种用于缸体的可变径内壁扫查仪 (Diameter-variable inner wall scanning instrument for cylinder body ) 是由 谢波 赵呈昊 李俊光 孙强 罗洪恩 徐明阳 李祥千 荣浩 闫跃 于 2019-11-28 设计创作，主要内容包括：本发明公开了一种用于缸体的可变径内壁扫查仪,包括支撑盘、设于支撑盘上的电动转台、电动转台上设有测距传感器和摄像仪,支撑盘沿其径向设置有至少三个可伸缩的、用于将支撑盘卡紧于缸体内壁的支撑杆,电动转台的旋转平台、测距传感器的检测方向以及摄像仪的拍摄方向均平行于支撑杆的伸缩方向。支撑盘上的支撑杆可伸出并支撑在待测缸体内壁上,提供检测的基准,并使支撑盘平行与缸体的径向,以使激光测距传感器正对对准缸体内壁实现直接测量；摄像仪可以同步观测缸体内壁的图像,从而可以实现测距和图像获取的同步检测,摄像仪采用正对内壁的安装方式,图像畸变小；可以实现不同直径规格缸体的测量,测量范围调整方便。(The invention discloses a variable-diameter inner wall scanning instrument for a cylinder body, which comprises a supporting disk, an electric rotating platform arranged on the supporting disk, a distance measuring sensor and a camera, wherein the electric rotating platform is provided with the distance measuring sensor and the camera, the supporting disk is provided with at least three telescopic supporting rods which are used for clamping the supporting disk on the inner wall of the cylinder body along the radial direction of the supporting disk, and a rotating platform of the electric rotating platform, the detection direction of the distance measuring sensor and the shooting direction of the camera are all parallel to the telescopic direction of the supporting rods. The supporting rod on the supporting disk can extend out and be supported on the inner wall of the cylinder body to be detected, so that the detection reference is provided, and the supporting disk is parallel to the radial direction of the cylinder body, so that the laser ranging sensor is aligned with the inner wall of the cylinder body to realize direct measurement; the camera can synchronously observe the image of the inner wall of the cylinder body, so that synchronous detection of distance measurement and image acquisition can be realized, and the camera adopts an installation mode of facing the inner wall, so that image distortion is small; the measurement of cylinder bodies with different diameters can be realized, and the measurement range is convenient to adjust.)

1. The utility model provides a but, variable footpath inner wall scanning appearance for cylinder body, its characterized in that includes supporting disk (1), locates electronic revolving stage (3) on supporting disk (1), be equipped with range sensor and camera (6) on electronic revolving stage (3), supporting disk (1) radially be provided with at least three telescopic along it, be used for with supporting disk (1) chucking in cylinder body inner wall's bracing piece (11), electronic revolving stage (35) of revolving stage (3) range sensor's detection direction and camera (6) the shooting direction all be on a parallel with the flexible direction of bracing piece (11).

2. The variable diameter inner wall scanner for cylinder block according to claim 1, wherein the distance measuring sensor is a laser distance measuring sensor (5).

3. The variable-diameter inner wall scanner for cylinder blocks according to claim 2, wherein a laser emitting point of the laser ranging sensor (5) is located at a rotation center of the electric turntable (3).

4. The variable diameter inner wall scanner for cylinder according to claim 1, wherein a turntable mounting frame (2) is fixed on the support plate (1), the electric turntable (3) is mounted on the turntable mounting frame (2), a mounting plate (4) parallel to the electric turntable (3) is fixed on a rotary platform (35) of the electric turntable (3), and the distance measuring sensor and the camera (6) are mounted on the mounting plate (4).

5. The variable diameter inner wall scanner for cylinder block according to claim 4, characterized in that the electric turntable (3) is an optical worm gear turntable.

6. The variable diameter inner wall scanner for cylinder according to claim 1, wherein the support rod (11) comprises a lead screw (13) disposed in a radial direction of the support plate (1), a nut (14) provided on the lead screw (13), a driving motor (18) connected to the lead screw (13) through a coupling (16) for driving the lead screw (13) to rotate, and a moving rod (19) connected to the nut (14).

7. The variable diameter inner wall scanner for cylinder according to claim 6, wherein the support plate (1) is provided with a guide slot penetrating along a radial direction thereof, and the moving rod (19) is slidably provided in the guide slot.

8. The variable diameter inner wall scanner for cylinder bodies according to any one of claims 1 to 7, characterized in that the outer ends of at least two support rods (11) are provided with positioning rods (22) parallel to the axial direction of the support plate (1), and the end parts of the rest support rods (11) are arc surfaces.

9. The variable diameter inner wall scanner for cylinder block according to claim 8, wherein the number of the support rods (11) is three, and the included angles of the three support rods (11) are 120 ° each other.

Technical Field

The invention relates to the technical field of inner wall inspection, in particular to a diameter-variable inner wall scanning instrument for a cylinder body.

Background

In a hydraulic device, a hydraulic cylinder is a heavy-duty low-speed component, which is subject to severe working conditions, is prone to wear, and is difficult to maintain. With the development of large-scale equipment, cylinder bodies with large diameters are applied more and more, and corresponding detection and inspection equipment is relatively single and cannot meet the requirements of industrial fields.

The large mechanical inside micrometer is very heavy and difficult to use, and when the cylinder diameter is large, a full series of inside micrometers are often needed, even more than 10, and the purchase, use and maintenance costs are very high. The three-coordinate measuring machine with higher measuring precision is huge in equipment and cannot be used on an industrial overhaul and maintenance site.

At present, hydraulic cylinder body commonly uses among the hydraulic system of mining industry, oil field trade, and the diameter is from 100mm to 800mm, and length longest can reach 6m, and is expensive, because detect technical means inefficiency, inconvenient, cause the maintenance not enough, scrap in advance and led to the fact very big waste, and take the operation of illness then easily to cause the incident.

Therefore, how to solve the problems of inconvenient inspection of the inner diameter of the cylinder and high cost is a problem to be solved urgently by those skilled in the art.

Disclosure of Invention

In view of this, the present invention provides a variable diameter inner wall scanner for cylinder, which can measure the inner diameters of cylinders with different diameters, and has the advantages of convenient adjustment of measurement range, low cost, and no loss of measurement accuracy.

In order to achieve the above purpose, the invention provides the following technical scheme:

the utility model provides a but, the variable footpath inner wall scanning appearance for cylinder body, includes the supporting disk, locates electronic revolving stage on the supporting disk be equipped with range sensor and the appearance of making a video recording on the electronic revolving stage, the supporting disk radially be provided with at least three telescopic along it, be used for with the supporting disk chucking is in the bracing piece of cylinder body inner wall, electronic revolving stage's rotary platform range sensor's detection direction and the shooting direction of the appearance of making a video recording all is on a parallel with the flexible direction of bracing piece.

Preferably, the distance measuring sensor is a laser distance measuring sensor.

Preferably, a laser emitting point of the laser ranging sensor is located at a rotation center of the electric turntable.

Preferably, a turntable mounting frame is fixed on the supporting disk, the electric turntable is mounted on the turntable mounting frame, a mounting plate parallel to the electric turntable is fixed on a rotary platform of the electric turntable, and the distance measuring sensor and the camera are mounted on the mounting plate.

Preferably, the electric turntable is an optical worm and gear turntable.

Preferably, the support rod comprises a screw rod arranged along the radial direction of the support plate, a nut arranged on the screw rod, a driving motor connected to the screw rod through a coupler and used for driving the screw rod to rotate, and a moving rod connected to the nut.

Preferably, the support plate is provided with a guide groove penetrating along the radial direction of the support plate, and the movable rod is slidably arranged in the guide groove.

Preferably, the outer ends of at least two of the supporting rods are provided with positioning rods which are parallel to the axial direction of the supporting plate, and the end parts of the rest supporting rods are arc surfaces.

Preferably, the number of the support rods is three, and the included angles of the three support rods are 120 degrees.

According to the diameter-variable inner wall scanning instrument for the cylinder body, the supporting rod on the supporting disk can extend out and is supported on the inner wall of the cylinder body to be detected, a detection reference is provided, namely the supporting disk is tightly clamped and fixed in the cylinder body through the supporting rod, and the supporting disk is parallel to the radial direction of the cylinder body, so that the laser ranging sensor is aligned with the inner wall of the cylinder body to realize direct measurement; in addition, the camera can synchronously observe the image of the inner wall of the cylinder body, so that the synchronous detection of distance measurement and image acquisition can be realized, and the camera adopts an installation mode of facing the inner wall, so that the image distortion is small, and the observation is easy; the measurement of cylinder bodies with different diameters can be realized through the telescopic length of the supporting rod, the measurement range is convenient to adjust, the cost is low, and the measurement precision is not lost; also has the characteristics of compact structure, simplicity, convenience and feasibility.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic view of an embodiment of a variable diameter inner wall scanner for a cylinder block according to the present invention;

FIG. 2 is a schematic front view of a support plate and a support rod thereon;

FIG. 3 is a schematic view of the back side of the support plate and the support rods thereon;

FIG. 4 is an exploded view of FIG. 1;

fig. 5 is a schematic view of a motorized turntable and a turntable mount.

The device comprises a support plate 1, a support rod 11, a support rod 12, a rear support seat 13, a screw rod 14, a nut 15, a rear support seat 16, a coupler 17, a motor support seat 18, a driving motor 19, a moving rod 20, an upper fixing frame 21, a lower fixing frame 22, a positioning rod 23, a front stop block 24, a rear stop block 24, a turntable mounting frame 2, an electric turntable 3, a turntable motor 31, a turntable motor support seat 32, a motor gear 33, a turntable gear 34, a rotary platform 35, a mounting plate 4, a laser ranging sensor 5 and a camera 6.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The core of the invention is to provide a diameter-variable inner wall scanning instrument for cylinder bodies, which can realize the measurement of the inner diameters of the cylinder bodies with different diameter specifications, has convenient adjustment of measurement range and low cost, and does not lose measurement precision.

Referring to fig. 1 to 5, fig. 1 is a schematic view of an embodiment of a variable-diameter inner wall scanner for a cylinder according to the present invention; FIG. 2 is a schematic front view of a support plate and a support rod thereon; FIG. 3 is a schematic view of the back side of the support plate and the support rods thereon; FIG. 4 is an exploded view of FIG. 1; fig. 5 is a schematic view of a motorized turntable and a turntable mount.

The invention provides a variable-diameter inner wall scanning instrument for a cylinder body, which comprises a supporting plate 1, an electric turntable 3 arranged on the supporting plate 1, wherein a distance measuring sensor and a camera 6 are arranged on the electric turntable 3, the supporting plate 1 is provided with at least three telescopic supporting rods 11 which are used for clamping the supporting plate 1 on the inner wall of the cylinder body along the radial direction of the supporting plate, and a rotating platform 35 of the electric turntable 3, the detection direction of the distance measuring sensor and the shooting direction of the camera 6 are all parallel to the telescopic direction of the supporting rods 11.

The supporting plate 1 is of a disc-shaped structure, the supporting plate 1 is a carrier of the whole device, the supporting plate 1 is provided with an electric turntable 3, the electric turntable 3 is provided with a rotatable rotating platform 35, the rotating platform 35 is provided with a distance measuring sensor and a camera 6, and the supporting plate 1 is further provided with at least three telescopic supporting rods 11 along the radial direction so as to clamp the supporting plate 1 on the inner wall of the cylinder body through the supporting rods 11; a support rod 11 on the support plate 1 extends out of the plate and is supported on the inner wall of the cylinder body to provide a detection reference; the electric turntable 3 is fixed on the support plate 1 and generates axial scanning movement; a distance measuring sensor for measuring the cylinder inner diameter and a camera 6 for taking an image of the inner wall are fixed on the rotary platform 35 of the electric turntable 3.

Because electric turntable 3's rotary platform 35, distance measuring sensor's direction of detection and the shooting direction of appearance 6 of making a video recording all are on a parallel with the flexible direction of bracing piece 11, consequently, fix supporting disk 1 at the inside in-process of cylinder body, need with the adjustment of supporting disk 1 to the radial parallel with the cylinder body, thereby when electric turntable 3 drives distance measuring sensor and appearance 6 rotation of making a video recording, distance measuring sensor is at rotatory in-process, can measure the inspection to the internal diameter of cylinder body, and simultaneously, appearance 6 of making a video recording can acquire the image of cylinder body inner wall in step, so that the wearing and tearing condition of inspection personnel sum investigation cylinder body.

Therefore, according to the variable-diameter inner wall scanning instrument for the cylinder body, the supporting rod 11 on the supporting disk 1 can extend out and be supported on the inner wall of the cylinder body to be detected, a detection reference is provided, namely the supporting disk 1 is tightly clamped and fixed in the cylinder body through the supporting rod 11, and the supporting disk 1 is parallel to the radial direction of the cylinder body, so that the laser ranging sensor 5 is aligned with the inner wall of the cylinder body to realize direct measurement; in addition, the camera 6 can synchronously observe the image of the inner wall of the cylinder body, so that the synchronous detection of distance measurement and image acquisition can be realized, and the camera 6 adopts an installation mode of facing the inner wall, so that the image distortion is small, and the observation is easy; the measurement of cylinder bodies with different diameters can be realized through the telescopic length of the supporting rod 11, the measurement range is convenient to adjust, the cost is low, and the measurement precision is not lost; also has the characteristics of compact structure, simplicity, convenience and feasibility.

On the basis of the above embodiment, preferably, the distance measuring sensor is a laser distance measuring sensor 5. Specifically, the laser emitting point of the laser ranging sensor 5 is located at the rotation center of the electric turntable 3, so that the distance measured by the laser ranging sensor 5 or the radius of the cylinder body obtained through calculation is used, and the ranging scheme is optimized.

In addition to the above embodiments, it is preferable that the turntable mounting bracket 2 is fixed to the support plate 1, the electric turntable 3 is mounted to the turntable mounting bracket 2, the mounting plate 4 parallel to the rotary platform 35 of the electric turntable 3 is fixed to the rotary platform 35, and the distance measuring sensor and the camera 6 are mounted to the mounting plate 4. Electric turntable 3 is fixed on supporting disk 1 through turntable mounting bracket 2, and range sensor and camera 6 are fixed on electric turntable 3's rotary platform 35 through mounting panel 4 to the cooperation installation is convenient for. In addition, the electric turn table 3 may be an optical worm gear turn table. The electric turntable 3 is composed of a turntable motor 31, a first-stage transmission gear and a rotary platform 35 driven by an optical worm gear to realize accurate and stable scanning rotation. The optical worm gear and worm turntable has a large reduction ratio, and can filter vibration of a driving transmission mechanism such as the turntable motor 31 and a primary transmission gear.

The supporting disk 1 contacts with the bottom surface of the turntable mounting frame 2, is connected through bolts, is positioned through positioning pins, and guarantees that the rotary platform 35 of the electric turntable 3 mounted on the turntable mounting frame 2 is parallel to the disk surface of the supporting disk 1 and the axis of the rotary platform is concentric. The mounting disc adopts bolted connection with electric turntable 3's rotary platform 35, adopts the dowel to fix a position, guarantees to install the laser outgoing optical axis center of laser range finding sensor 5 on the mounting disc along 1 diameter direction of supporting disk to it is parallel with the quotation of mounting disc. The above installation relationship ensures that the distance measured by the laser ranging sensor 5 or the cylinder radius is obtained through calculation.

The turntable motor 31 is installed on the turntable mounting frame 2 through the turntable motor support base 32, the first-stage transmission gear comprises a motor gear 33 installed on an output shaft of the turntable motor 31 in a matching mode and a turntable gear 34 installed on an input shaft of the rotary platform 35, and the motor gear 33 is driven by meshing with the turntable gear 34 to rotate the rotary platform 35.

In addition to the above-mentioned embodiments, in consideration of the specific arrangement of the support rod 11, it is preferable that the support rod 11 includes a screw 13 rotatably disposed on the support plate 1 and disposed along the radial direction of the support plate 1, a nut 14 disposed on the screw 13, a driving motor 18 connected to the screw 13 through a coupling 16 for driving the screw 13 to rotate, and a moving rod 19 connected to the nut 14. In order to drive the movable rod 19 to move back and forth relative to the supporting disk 1 through the positive and negative rotation of the driving motor 18 to adapt to the cylinders with different inner diameters, in addition, a guide groove penetrating along the radial direction of the support disk 1 can be arranged on the supporting disk 1, and the movable rod 19 can be arranged in the guide groove in a sliding manner. The guide groove is arranged to penetrate through the supporting disc 1, so that the adjusting range of the movable rod 19 can be enlarged.

Referring to fig. 2 and 3, the supporting rod 11 specifically includes: a rear supporting seat 12 and a front supporting seat 15 which are arranged on the supporting disk 1, a screw rod 13 which is rotatably arranged on the rear supporting seat 12 and the front supporting seat 15, a driving motor 18 which is arranged at one end of the screw rod 13 and is connected with the screw rod 13 through a coupler 16, a driving motor supporting seat 17 for supporting and fixing the motor, a guide groove which is arranged below the screw rod 13 and penetrates through the supporting disk 1, the guide groove and the screw rod 13 are both arranged along the radial direction of the supporting rod 11, a moving rod 19 is slidably inserted in the guide groove, a front stop block 23 and a rear stop block 24 are arranged on the moving rod 19 at two sides of a nut 14, the front stop block 23 and the rear stop block 24 are tightly clamped on the nut 14, so that the nut 14 pushes the moving,

the front supporting seat 12 and the rear supporting seat 15 jointly support the screw rod 13, the front supporting seat 12 and the rear supporting seat 15 can be fixed on the supporting plate 1 through bolts, the nut 14 is screwed and clamped on the screw rod 13 by the front stop block 23 and the rear stop block, the rear stop block 23 and the front stop block 23 can be fixedly installed on the moving rod 19 through bolts, the nut 14 pushes the moving rod 19 to slide in the guide of the supporting plate 1, the driving motor 18 is installed and supported on the driving motor supporting seat 17, the driving motor supporting seat 17 is fixedly installed on the supporting plate 1 through bolts, the coupler 16 is connected with an output shaft of the driving motor 18 and one end of the screw rod 13, and when the driving motor 18 rotates forwards and backwards, the moving rod 19 is pushed and pulled to adapt to cylinder bodies with.

On the basis of any of the above embodiments, the outer ends of at least two support rods 11 are provided with positioning rods 22 perpendicular to the support rods 11 along the axial direction of the support plate 1, and the end portions of the rest of the support rods 11 are arc surfaces. Specifically, the positioning rod 22 can be fixed at the end of the supporting rod 11 by the upper fixing frame 21 and the lower fixing frame 21 which are disposed at the upper and lower sides of the movement, and of course, the positioning rod 22 and the moving rod 19 can be integrated into a whole structure, which is convenient for processing.

As shown in fig. 3, the positioning rod 22 is mounted at the end of the moving rod 19 through the upper fixing frame 21 and the lower fixing frame 21, and the positioning rod 22 is perpendicular to the moving rod 19 along the axial direction of the supporting plate 1, so that when the positioning rod 22 is attached to the side wall of the cylinder, the plate surface of the supporting plate 1 can be ensured to be perpendicular to the axial lead of the cylinder rigid body. And because the tops of the rest of the support rods 11 are arc surfaces, specifically, the arc surfaces can be hemispherical surfaces, and the moving rod 19 with the end part being an arc surface is in point contact with the inner wall of the cylinder body, when the positioning rod 22 and the arc part of the moving rod 19 are in contact with the inner wall of the cylinder body, the arc part of the moving rod 19 can slide on the inner wall of the cylinder body, so that the positioning is ensured to be in complete line contact with the inner wall of the cylinder body, and further the disc surface of the support disc 1 is ensured to be perpendicular to the axial lead of the rigid body of the cylinder body.

Considering the specific number of the supporting rods 11, it is preferable that the number of the supporting rods 11 is three, and the included angles of the three supporting rods 11 are 120 degrees. Specifically, the three guide grooves of the three moving rods 19 are staggered back and forth along the axis direction, so that the distribution accuracy of the guide grooves is ensured through the machining accuracy, and the guiding and positioning accuracy is improved; the guide way runs through supporting disk 1 diameter direction, increases the support range that can adjust.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The variable diameter inner wall scanner for cylinder body provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.