Device for detecting inner wall of nodular cast iron pipe die

Abstract

The utility model relates to the technical field of nodular cast iron pipe manufacturing, in particular to a nodular cast iron pipe die inner wall detection device which comprises a vehicle body, and the vehicle body is provided with wheels used for walking along the inner wall of a pipe die. The rotating rod is rotationally assembled on the vehicle body; the visual detection device is connected to the end part of the rotating rod so as to rotate along with the rotating rod and is used for collecting data information of the inner wall surface of the pipe die; the linear driving piece is fixed to the vehicle body and is in transmission connection with wheels of the vehicle body so as to drive the vehicle body to move in the axial direction of the pipe die. And the rotary driving piece is fixed on the vehicle body and is in transmission connection with the rotating rod. When the nodular cast iron pipe mold inner wall detection device is used, the vehicle body walks on the nodular cast iron pipe mold inner wall, meanwhile, the visual detection device can collect 360-degree surface data of the nodular cast iron pipe mold inner wall, manual detection is not needed, operation is easy, and errors are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of ductile iron pipe manufacturing, in particular to an inner wall detection device for a ductile iron pipe die. Background Art

[0002] Ductile iron pipes are pipes formed by high-speed centrifugal casting of high-quality molten iron added with a spheroidizing agent, and are used for the transportation of water and gas. Ductile iron pipes have the corrosion resistance of iron and the mechanical properties of steel.

[0003] The high-speed centrifugal forming process of ductile iron pipes requires a metal mold, i.e., a pipe die, and the inner cavity of the pipe die determines the product shape of the ductile iron pipe.

[0004] During the use of the pipe die, it is frequently scoured by high-temperature molten iron and frequently heated and cooled, so the inner cavity size of the pipe die is likely to change; at the same time, the frequent heating and cooling cause stress concentration on the inner wall of the pipe die, and it is necessary to perform stress relief treatment on the inner wall of the pipe die. The method used is to punch the pipe die, that is, to use an impact device to strike the pipe die to eliminate internal stress, and evenly distributed punches are formed on the inner wall of the pipe die. The change of the inner cavity size of the pipe die and the size and distribution of the punches affect the operating parameters of the centrifugal ductile iron pipe machine, and the data of the change of the inner cavity size of the pipe die and the size and distribution of the punches need to be obtained through measurement. In the prior art, there is still a method of manually holding a measuring tool for measurement, which has low efficiency and low detection accuracy. Summary of the Utility Model

[0005] The utility model provides an inner wall detection device for a ductile iron pipe die to solve the technical problems of low efficiency and low detection accuracy in manual collection of existing detection.

[0006] To solve the above problems, an inner wall detection device for a ductile iron pipe die provided by the utility model adopts the following technical solutions:

[0007] An inner wall detection device for a ductile iron pipe die includes a vehicle body, and the vehicle body has wheels for traveling along the inner wall of the pipe die; a rotating rod is rotatably assembled on the vehicle body, and the axis of the rotating rod is parallel to the axis of the pipe die; a vision detection device is connected to the end of the rotating rod to rotate with the rotating rod, and the vision detection device is used for collecting data information on the surface of the inner wall of the pipe die; a linear driving member is fixed on the vehicle body and is in transmission connection with the wheels of the vehicle body to drive the vehicle body to move axially along the pipe die; a rotary driving member is fixed on the vehicle body and is in transmission connection with the rotating rod.

[0008] The beneficial effects are as follows: When the inner wall detection device of a ductile iron pipe mold of the present utility model is in use, first place the vehicle body inside the ductile iron pipe mold, and then start the rotary drive member, so that the rotary drive member drives the visual detection device to rotate in the circumferential direction, thereby collecting data on the surfaces of various parts inside the ductile iron pipe mold. When the inner wall detection device of a ductile iron pipe mold of the present utility model is in use, while the vehicle body travels on the inner wall of the ductile iron pipe mold, the visual detection device can collect data on the 360-degree surface of the inner wall of the ductile iron pipe mold. It does not require manual detection, is easy to operate, and reduces errors.

[0009] Further, a circular groove is formed at the front end of the vehicle body, and an annular groove is formed on the side wall of the vehicle body in front of the circular groove. The annular groove penetrates the vehicle body forward. A sun gear, a planetary pinion, and an internal gear ring adapted to the circular groove are rotatably assembled in the circular groove. The sun gear is coaxially arranged with the circular groove, the planetary pinion meshes with the sun gear, the internal gear ring meshes with the planetary pinion, and a rotating sleeve adapted to the annular groove is further connected to the side of the internal gear ring facing the annular groove. The rotating sleeve is rotatably assembled in the annular groove and the front side of the rotating sleeve is connected to a rotating rod. The output shaft of the rotary drive member is in transmission connection with the sun gear.

[0010] Beneficial effects: Reduce the rotation speed of the rotating rod, thereby reducing the rotation speed of the visual detection device, and further avoiding accidents where inaccurate data collection occurs due to the visual detection device rotating too fast.

[0011] Further, the output shaft of the rotary drive member is also connected to a speed reducer, and the output shaft of the speed reducer is coaxially connected to the sun gear.

[0012] Beneficial effects: Further reduce the rotation speed of the rotating rod.

[0013] Further, a lifting drive member is also connected to the front end of the rotating rod. The visual detection device includes a visual detection camera and a light source. The visual detection camera is connected to the lifting end of the lifting drive member to lift in the up and down direction.

[0014] Beneficial effects: Ensure that the distances between the visual detection device and various positions on the inner wall of the mold are the same, and prevent the distance between the visual detection device and the inner wall of the mold from being too far, which affects data accuracy.

[0015] Further, the lifting drive member is a linear module mechanism.

[0016] Beneficial effects: Simple structure, convenient for installation and production. Description of the Drawings

[0017] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features, and advantages of the exemplary embodiments of the present utility model will become readily understandable. In the drawings, several embodiments of the present utility model are shown in an exemplary rather than restrictive manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0018] Figure 1 is a schematic structural view of an inner wall detection device for a ductile iron pipe mold of the present utility model;

[0019] Figure 2 is Figure 1 an enlarged view of part A in

[0020] Figure 3 is a front view of an inner wall detection device for a ductile iron pipe mold of the present utility model;

[0021] Figure 4 is a cross-sectional view of the circular groove of the present utility model.

[0022] Description of reference numerals:

[0023] 1, vehicle body; 2, rotation driving member; 3, visual detection device; 4, rotating rod; 5, circular groove; 6, annular groove; 7, sun gear; 8, planetary pinion; 9, internal gear ring; 10, speed reducer; 11, lifting driving member; 12, wheel; 13, rotating sleeve. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of the present utility model.

[0025] The quantity of any element in the drawings is for illustration rather than limitation, and any naming is only for distinction and does not have any limiting meaning.

[0026] Next, with reference to several representative embodiments of the present utility model, the principles and spirit of the present utility model will be elaborated in detail.

[0027] Embodiment 1 of an inner wall detection device for a ductile iron pipe mold provided by the present utility model:

[0028] As Figures 1 to 4 shown, an inner wall detection device for a ductile iron pipe mold of the present utility model includes a vehicle body 1, a visual detection device 3, a rotating rod 4, a linear driving member, and a rotation driving member 2.

[0029] At the lower end of the vehicle body 1, there are two pairs of wheels 12 arranged at intervals in the front-rear direction. The two wheels 12 in a pair are symmetrically arranged on the left and right sides of the vehicle body 1. The two wheels 12 in a pair are coaxially connected together by a connecting shaft. The two connecting shafts are drivingly connected by a first belt transmission mechanism. The first belt transmission mechanism includes two first belt pulleys respectively coaxially fixed on the two connecting shafts, and the two first belt pulleys are drivingly connected by a belt.

[0030] The linear driving member is a servo motor and is drivingly connected to the rear connecting shaft through a second belt transmission mechanism. The second belt transmission mechanism includes two second belt pulleys. One of the second belt pulleys is coaxially fixed on the output shaft of the linear driving member, and the other second belt pulley is coaxially fixed on the rear connecting shaft, so as to drive the vehicle body 1 to travel on the inner wall of the ductile iron pipe mold.

[0031] A circular groove 5 is also formed at the front end of the vehicle body 1. An annular groove 6 is formed on the side wall of the vehicle body 1 in front of the circular groove 5, and the annular groove 6 penetrates through the vehicle body 1 forward. A sun gear 7, a planetary pinion 8 and an internal gear ring 9 adapted to the circular groove 5 are rotatably assembled in the circular groove 5. The sun gear 7 is coaxially arranged with the circular groove 5. The planetary pinion 8 meshes with the sun gear 7, and the internal gear ring 9 meshes with the planetary pinion 8. Moreover, a rotating sleeve 13 adapted to the annular groove 6 is connected to the side of the internal gear ring 9 facing the annular groove 6. The rotating sleeve 13 is rotatably assembled in the annular groove 6 and the front side of the rotating sleeve 13 extends to the front end of the vehicle body 1.

[0032] The rotating rod 4 is connected to the front end of the rotating sleeve 13 and the axis of the rotating rod 4 is parallel to the axis of the ductile iron pipe mold. A lifting driving member 11 is also provided at the front end of the rotating rod 4.

[0033] In this embodiment, the lifting driving member 11 is a linear module mechanism, and the moving end of the linear module mechanism moves up and down in the vertical direction.

[0034] The visual inspection device 3 includes a visual inspection camera and a light source. The visual inspection camera is connected to the moving end of the linear module mechanism. The visual inspection camera is used to take pictures of the inner wall of the ductile iron pipe mold, and the visual inspection camera is also connected to a data terminal to transmit the photographed data to the data terminal. The data terminal analyzes and obtains the inner diameter of the pipe mold, the dotting depth, the dotting diameter, the evenness of dotting distribution, the width, length and depth of the cracks generated by internal stress, and the elimination of the cracks that should be generated inside the pipe mold after maintenance, and uses these data to guide the adjustment of the process parameters for the production of ductile iron pipes.

[0035] The rotation driving member 2 is arranged on the vehicle body 1. The rotation driving member 2 is a servo motor, and the output shaft of the servo motor is connected to a speed reducer 10. The output shaft of the speed reducer 10 is coaxially fixed to the sun gear 7.

[0036] When the inner wall detection device of a ductile iron pipe mold of the present utility model is in use, first place the vehicle body 1 inside the ductile iron pipe mold, and then start the rotary drive member 2, so that the rotary drive member 2 drives the sun gear 7 to rotate. The rotation of the sun gear 7 drives the internal gear ring 9 to rotate. The rotation of the internal gear ring 9 drives the rotating sleeve 13 to rotate. The rotation of the rotating sleeve 13 drives the rotating rod 4 to rotate. The rotation of the rotating rod 4 drives the linear module mechanism to rotate, thereby driving the visual detection device 3 to rotate in the circumferential direction, and then collecting data on the surfaces of various parts inside the ductile iron pipe mold.

[0037] When the inner wall detection device of a ductile iron pipe mold of the present utility model is in use, while the vehicle body travels on the inner wall of the ductile iron pipe mold, the visual detection device can collect data on the 360-degree surface of the inner wall of the ductile iron pipe mold, without manual detection, with simple operation and reduced error.

[0038] Embodiment 2 of the inner wall detection device of a ductile iron pipe mold provided by the present utility model:

[0039] The main difference from Embodiment 1 is that in Embodiment 1, a circular groove is provided at the front end of the vehicle body. An annular groove is provided on the side wall of the vehicle body in front of the circular groove, and the annular groove penetrates through the vehicle body forward. A sun gear, a planetary pinion gear, and an internal gear ring adapted to the circular groove are rotatably assembled in the circular groove. The sun gear is coaxially arranged with the circular groove. The planetary pinion gear meshes with the sun gear. The internal gear ring meshes with the planetary pinion gear. And a rotating sleeve adapted to the annular groove is further connected to the side of the internal gear ring facing the annular groove. The rotating sleeve is rotatably assembled in the annular groove and the front side of the rotating sleeve is connected to the rotating rod. The output shaft of the speed reducer is fixedly connected to the sun gear.

[0040] In this embodiment, the output shaft of the speed reducer penetrates through the vehicle body forward and is connected to the rotating rod.

[0041] Embodiment 3 of the inner wall detection device of a ductile iron pipe mold provided by the present utility model:

[0042] The main difference from Embodiment 1 is that in Embodiment 1, the output shaft of the rotary drive member is further connected to a speed reducer, and the output shaft of the speed reducer is coaxially connected to the sun gear.

[0043] In this embodiment, the speed reducer is not provided. At this time, the output shaft of the rotary drive member is directly fixedly connected to the sun gear.

[0044] Embodiment 4 of the inner wall detection device of a ductile iron pipe mold provided by the present utility model:

[0045] The main difference from Embodiment 1 is that in Embodiment 1, a lifting drive member is further connected to the front end of the rotating rod, and the visual detection device is connected to the lifting end of the lifting drive member to lift in the up and down directions.

[0046] In this embodiment, when the vehicle body is large enough and the visual detection device can accurately collect the data of the inner wall of the ductile iron pipe mold, the lifting driving member can also be not provided.

[0047] Based on the above description of this specification, those skilled in the art can also understand the following terms used. For example, terms indicating orientation or positional relationship such as "upper", "lower", "front", "rear", "left", "right", etc. are based on the orientation or positional relationship shown in the drawings of this specification. They are only for the purpose of facilitating the description of the solution of the present invention and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operated in the specific orientation. Therefore, the above terms of orientation or positional relationship cannot be understood or interpreted as a limitation to the solution of the present invention.

[0048] The above are only the preferred embodiments of the present invention, and do not impose any formal limitations on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art, without departing from the scope of the technical solution of the present invention, can make some changes or modifications to the above-disclosed methods and technical contents to obtain equivalent embodiments of equivalent changes. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

[0049] In addition, in the description of this specification, the meaning of "a plurality of" is at least two, such as two, three or more, etc., unless otherwise specifically defined.

Claims

1. A detection device for the inner wall of a ductile iron pipe die, characterized in that, Comprising: A vehicle body having wheels for traveling along the inner wall of a pipe mold; A rotating rod rotatably assembled on the vehicle body, the axis of the rotating rod being parallel to the axis of the pipe mold; A visual detection device connected to the end of the rotating rod to rotate therewith, the visual detection device being used for collecting data information on the inner wall surface of the pipe mold; A linear drive member fixed on the vehicle body and drivingly connected to the wheels of the vehicle body to drive the vehicle body to move axially along the pipe mold; A rotary drive member fixed on the vehicle body and drivingly connected to the rotating rod.

2. The inner wall detection device for a ductile iron pipe mold according to claim 1, characterized in that, The rotary drive member is a servo motor, and the output shaft of the servo motor is drivingly connected to the rotating rod.

3. The inner wall detection device for a ductile iron pipe die according to claim 2, characterized in that, A circular groove is formed at the front end of the vehicle body, and an annular groove is formed in the side wall of the vehicle body on the front side of the circular groove, the annular groove penetrating through the vehicle body forward. A sun gear, a planetary pinion and an internal gear ring adapted to the circular groove are rotatably assembled in the circular groove. The sun gear is coaxially arranged with the circular groove, the planetary pinion meshes with the sun gear, the internal gear ring meshes with the planetary pinion, and a rotating sleeve adapted to the annular groove is further connected to the side of the internal gear ring facing the annular groove. The rotating sleeve is rotatably assembled in the annular groove and the front side of the rotating sleeve is connected to the rotating rod. The output shaft of the rotary drive member is drivingly connected to the sun gear.

4. The inner wall detection device for a ductile iron pipe die according to claim 3, characterized in that, The output shaft of the rotary drive member is further connected to a speed reducer, and the output shaft of the speed reducer is coaxially connected to the sun gear.

5. A detection device for the inner wall of a ductile iron pipe mold according to any one of claims 1-4, characterized in that, A lifting drive member is further connected to the front end of the rotating rod. The visual detection device includes a visual detection camera and a light source, and the visual detection camera is connected to the lifting end of the lifting drive member to lift in the up and down direction.

6. The inner wall detection device of a ductile iron pipe die according to claim 5, characterized in that, The lifting drive member is a linear module mechanism.

7. A detecting device for the inner wall of a ductile iron pipe die according to any one of claims 1-4, characterized in that, Two pairs of wheels are arranged at intervals in the front and rear direction at the lower end of the vehicle body. The two wheels in a pair are coaxially connected together by a connecting shaft and symmetrically arranged on the left and right sides of the vehicle body. The two connecting shafts are drivingly connected by a first belt transmission mechanism, and the linear drive member is drivingly connected to one of the connecting shafts by a second belt transmission mechanism.

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