Width adjusting device for pipeline crawler

Abstract

The utility model discloses a width adjusting device for a pipeline crawler, which relates to the technical field of pipeline crawlers and comprises a chassis and two support rods arranged at the bottom of the chassis. An X-ray machine is mounted on the chassis; the supporting rod comprises a main pipe and auxiliary pipes symmetrically arranged at the ends of the main pipe, the symmetry axis of the two auxiliary pipes is consistent with the advancing direction of the pipeline crawler, the inner ends of the auxiliary pipes are arranged in the main pipe in a sliding mode and fixed through two locking pieces, the two locking pieces are symmetrically arranged on the two side walls of the main pipe, and wheels are arranged at the outer ends of the auxiliary pipes. According to the scheme, the width of the pipeline crawler can be adjusted to adapt to pipelines with different pipe diameters.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline crawlers, in particular to a pipeline crawler width adjustment device. Background Art

[0002] Pipeline non-destructive testing process: Place the pipeline crawler into the pipeline entrance and control its movement inside the pipeline through remote control; the X-ray machine installed on the pipeline crawler emits X-rays, and the detector outside the pipeline captures X-ray signals with different absorption degrees to form an image of the inside of the pipeline, thereby judging whether the pipeline has defects such as corrosion, cracks, holes, etc.

[0003] When performing nondestructive testing inside a pipeline, it is necessary to ensure that the body of the X-ray machine is located on the central axis of the pipeline. Therefore, for pipelines of different diameters, it is necessary to select a pipeline crawler of corresponding specifications. In order to increase the scope of application of a pipeline crawler, the best way is to make the width and height of the pipeline crawler adjustable. This solution aims to solve the problem of adjustable width of the pipeline crawler. Utility Model Content

[0004] In order to solve the deficiencies in the prior art, the utility model provides a pipeline crawler width adjustment device, which can adjust the width of the pipeline crawler to be suitable for pipelines with different diameters.

[0005] In order to achieve the purpose of this utility model, the following scheme is proposed:

[0006] A pipeline crawler width adjustment device comprises a chassis and two support rods arranged at the bottom of the chassis.

[0007] The chassis is used to install the X-ray machine;

[0008] The support rod includes a main pipe and a sub-pipe symmetrically arranged at the end of the main pipe. The symmetry axes of the two sub-pipes are consistent with the travel direction of the pipeline crawler. The inner ends of the sub-pipes are slidably arranged in the main pipe and fixed by two locking pieces. The two locking pieces are symmetrically arranged on the two side walls of the main pipe. Wheels are arranged at the outer ends of the sub-pipes.

[0009] Furthermore, the inner end of the auxiliary pipe is closed, a first spring is arranged in the main pipe, and two ends of the first spring are respectively connected to the inner ends of the two auxiliary pipes.

[0010] Furthermore, the main pipe and the auxiliary pipe are both configured as square pipes.

[0011] Furthermore, a first hole is provided on the side wall of the main tube, and a row of second holes is arrayed on the side wall of the secondary tube. The locking member includes a shell, a button, a slide rod and a locking rod. The shell is fixedly arranged on the side wall of the main tube, and a third hole is provided on the shell at a position corresponding to the first hole. An inner tube corresponding to the third hole is provided in the shell. The outer end of the locking rod is arranged outside the inner tube, and the inner end is passed through the inner tube, the third hole, the first hole and one of the second holes. Two windows are provided at symmetrical positions on the side wall of the inner tube, and the slide rod is slidably arranged in the two windows and obliquely penetrates the locking rod. The outer wall of the button is close to the inner wall of the shell, and two parallel inclined surfaces are provided at positions corresponding to the inner wall of the button. The button and the locking rod are connected by a second spring, and the end faces of the slide rod are matched with the corresponding inclined surfaces respectively.

[0012] Furthermore, when the button is pressed, the inclined surface causes the slide bar to slide in the direction of the line connecting the two windows, and the slide bar causes the lock bar to disengage from the second hole, and the second spring is in a compressed state.

[0013] Furthermore, a scale is provided on the top surface of the auxiliary tube.

[0014] The beneficial effects of the utility model are:

[0015] 1. The width of the pipeline crawler can be adjusted, thereby expanding the scope of application of the pipeline crawler; the auxiliary pipe can be extended and retracted along the main pipe and fixed by a locking piece, which is easy to operate.

[0016] 2. The locking structure is ingenious. When the width of the pipeline crawler needs to be adjusted, the staff first adjusts one of the auxiliary pipes, and then presses two buttons with one hand to unlock the auxiliary pipe; when the auxiliary pipe is extended to the appropriate position, the staff releases the two buttons to lock the auxiliary pipe. The operation is very simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The structure diagram of the pipeline crawler width adjustment device is shown;

[0018] Figure 2 The internal structure diagram of the locking member is shown;

[0019] Figure 3 The connection diagram of the slide bar, the lock bar and the inner tube is shown. DETAILED DESCRIPTION

[0020] like Figure 1 As shown, this embodiment provides a pipeline crawler width adjustment device, including a chassis 1 and two support rods 2.

[0021] Specifically, the chassis 1 is used to install the X-ray machine. In the direction of travel of the pipeline crawler, two support rods 2 are arranged in an array at the bottom of the chassis 1. Each support rod 2 includes a main pipe 21 and two auxiliary pipes 22. The two auxiliary pipes 22 are symmetrically arranged at the ends of the main pipe 21. The symmetry axes of the two auxiliary pipes 22 are consistent with the direction of travel of the pipeline crawler. Wheels 23 are provided at the outer ends of the auxiliary pipes 22. The inner ends of the auxiliary pipes 22 are slidably arranged in the main pipe 21 and fixed by two locking members 3. The two locking members 3 are symmetrically arranged on the two side walls of the main pipe 21.

[0022] The main pipe 21 and the auxiliary pipe 22 can be configured as round pipes. When the auxiliary pipe 22 is extended and retracted in the main pipe 21, in order to ensure that the auxiliary pipe 22 only retracts and does not rotate at will, in this embodiment, the main pipe 21 and the auxiliary pipe 22 are both configured as square pipes.

[0023] The side wall of the main pipe 21 is provided with a first hole, each of which is provided with a locking member 3, and the side wall of the auxiliary pipe 22 is provided with a row of second holes, and the specific structure of the locking member 3 is as follows: Figure 1-Figure 3 As shown, it includes a shell 31, an inner tube 32, a button 33, a locking rod 34 and a sliding rod 35. The shell 31 is fixedly arranged on the side wall of the main tube 21. The shell 31 is closed at one end facing the main tube 21, and a third hole is arranged at a position corresponding to the first hole at the end. The apertures of the first hole, the second hole and the third hole are all consistent. The shell 31 is opened at one end away from the main tube 21. The inner tube 32 is arranged in the shell 31, and the inner tube 32 is coaxially arranged with the third hole. The inner diameter of the inner tube 32 is consistent with the aperture of the third hole. The outer end of the locking rod 34 is arranged outside the inner tube 32, and the inner end of the locking rod 34 is sequentially penetrated into the inner tube 32, The third hole, the first hole and one of the second holes, two windows 321 are symmetrically arranged on the side wall of the inner tube 32, the slide bar 35 is slidably arranged in the two windows 321, and the slide bar 35 obliquely penetrates the locking rod 34, the outer wall of the button 33 is close to the inner wall of the outer shell 31, and the button 33 is opened at one end facing the main tube 21, the inner tube 32, the locking rod 34 and the slide bar 35 are all located in the button 33, and two parallel inclined surfaces 331 are arranged at corresponding positions on the inner wall of the button 33, the button 33 and the locking rod 34 are connected by a second spring 36, and the end faces of the slide bar 35 are matched with the corresponding inclined surfaces 331 respectively.

[0024] The principle is as follows: when the button 33 is pressed, the inclined surface 331 presses the end surface of the slide bar 35 toward the main tube 21, thereby causing the slide bar 35 to slide in the direction of the line connecting the two windows 321 (i.e., in the direction of the line connecting the two windows 321). Figure 3 In the perspective, the slide bar 35 slides downward), the sliding of the slide bar 35 will cause the locking rod 34 to disengage from the second hole of the auxiliary tube 22, and the second spring 36 is in a compressed state; when the auxiliary tube 22 is extended and retracted to a suitable position, the button 33 is released, and under the action of the second spring 36, the button 33 is reset, and the locking rod 34 is inserted into another second hole of the auxiliary tube 22, thereby fixing the auxiliary tube 22.

[0025] When the width of the pipeline crawler needs to be adjusted, the staff first adjusts one of the auxiliary pipes 22, and then presses two buttons 33 with one hand to unlock the auxiliary pipe 22; when the auxiliary pipe 22 is extended to a suitable position, the two buttons 33 are released to lock the auxiliary pipe 22, which is very simple to operate.

[0026] In order to facilitate more rapid extension and retraction of the auxiliary tube 22 to a suitable position, a scale is provided on the top surface of the auxiliary tube 22 in this embodiment.

[0027] In order to improve the structural stability, in this embodiment, a first spring is provided in the main pipe 21 , the inner ends of the auxiliary pipes 22 are closed, and the two ends of the first spring are connected to the inner ends of the two auxiliary pipes 22 respectively.

[0028] The above embodiments are only used to illustrate the technical ideas and features of the utility model, and are not intended to be the only or limit the utility model. Those skilled in the art should understand that various changes or equivalent replacements made to the utility model without departing from the scope of the utility model are within the scope of protection of the utility model.

Claims

1. A pipeline crawler width adjustment device, characterized in that: It comprises a chassis (1) and two support rods (2) arranged at the bottom of the chassis (1); The chassis (1) is used to install the X-ray machine; The support rod (2) comprises a main pipe (21) and a secondary pipe (22) symmetrically arranged at the end of the main pipe (21), the symmetry axes of the two secondary pipes (22) being consistent with the travel direction of the pipeline crawler, the inner ends of the secondary pipes (22) being slidably arranged in the main pipe (21) and being fixed by two locking members (3), the two locking members (3) being symmetrically arranged on the two side walls of the main pipe (21), and the outer ends of the secondary pipes (22) being provided with wheels (23); The side wall of the main pipe (21) is provided with a first hole, the side wall of the auxiliary pipe (22) is provided with a row of second holes, the locking member (3) comprises a shell (31), a button (33), a slide bar (35) and a lock bar (34), the shell (31) is fixedly arranged on the side wall of the main pipe (21), a third hole is arranged at a position corresponding to the first hole on the shell, an inner pipe (32) corresponding to the third hole is arranged in the shell (31), the outer end of the lock bar (34) is arranged outside the inner pipe (32), and the inner end thereof is passed through the inner pipe (32), the third hole and the first hole. and one of the second holes, two windows (321) are symmetrically arranged on the side wall of the inner tube (32), the slide rod (35) is slidably arranged in the two windows (321) and obliquely penetrates the lock rod (34), the outer wall of the button (33) is in close contact with the inner wall of the housing (31), two parallel inclined surfaces (331) are arranged at corresponding positions on the inner wall of the button (33), the button (33) and the lock rod (34) are connected by a second spring (36), and the end faces of the slide rod (35) are matched with the corresponding inclined surfaces (331); When the button (33) is pressed, the inclined surface (331) causes the slide bar (35) to slide in the direction of the line connecting the two windows (321), and the slide bar (35) causes the lock bar (34) to disengage from the second hole, and the second spring (36) is in a compressed state.

2. The pipeline crawler width adjustment device according to claim 1, characterized in that: The inner end of the auxiliary pipe (22) is closed, a first spring is arranged in the main pipe (21), and two ends of the first spring are respectively connected to the inner ends of the two auxiliary pipes (22).

3. The pipeline crawler width adjustment device according to claim 1, characterized in that: The main pipe (21) and the auxiliary pipe (22) are both configured as square pipes.

4. The pipeline crawler width adjustment device according to claim 1, characterized in that: A scale is provided on the top surface of the auxiliary tube (22).

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