Pipeline measurement auxiliary device

Abstract

The utility model discloses a pipeline measurement auxiliary device, and the device comprises a central pipe which is used for the penetration of a traction rope, and the outer diameter of the central pipe is smaller than the inner diameter of a measured pipeline; the first support is fixedly arranged outside the central pipe; the second support is movably arranged outside the central pipe in a sleeving manner; the supporting arm assemblies are distributed around the center line of the center pipe in an annular array mode, each supporting arm assembly comprises a first supporting arm, a second supporting arm and a supporting piece, one end of each first supporting arm is hinged to the corresponding first supporting base, one end of each second supporting arm is hinged to the corresponding second supporting base, and the other end of each first supporting arm is hinged to the corresponding supporting piece; the other end of the second supporting arm is hinged to the supporting piece or the other end of the first supporting arm, and the supporting piece is used for abutting against the inner wall of a detected pipeline; and the elastic piece is used for providing elastic force for driving the second support to be close to the first support. The structure can play an auxiliary role in measurement operation, the pipe orifice of the measured pipeline can be prevented from being damaged by the traction rope, and the measurement precision of the pipeline measurement device can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of pipeline measurement, and in particular to a pipeline measurement auxiliary device. Background Art

[0002] With the rapid development of urbanization, urban underground pipelines are becoming increasingly complex. In order to use underground space scientifically and safely, it is necessary to map the position and trajectory of underground pipelines laid by non-excavation methods. To this end, a pipeline inertial measurement technology is proposed. Specifically, a pipeline measuring device connected to a traction rope is driven to move along the measured pipeline to map the position and trajectory of the measured pipeline.

[0003] However, when performing measurement operations, due to the limitations of the on-site environment, there is a situation where the winch used to retract and release the traction rope is not at the same horizontal height as the pipe mouth of the measured pipe, and the underground pipeline laid by non-excavation method is usually curved, so that the traction rope deviates from the center line of the measured pipe, especially at the pipe mouth of the measured pipe, and then there are the following problems: 1. During the measurement operation, when the deviation of the traction rope relative to the center line of the measured pipe is large, the traction force of the traction rope will generate a large component force perpendicular to the center line of the measured pipe, causing the traction rope to contact the pipe mouth of the measured pipe and generate friction with the pipe mouth of the measured pipe. When the measured pipe is a plastic pipe, the traction rope will wear the pipe mouth of the measured pipe, thereby causing damage to the pipe; 2. The above-mentioned component force will act on the pipeline measuring device in the measured pipe, so that the pipeline measuring device in the measured pipe deviates from the center line of the measured pipe, thereby affecting the measurement accuracy of the pipeline measuring device. Utility Model Content

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a pipeline measurement auxiliary device, which can play an auxiliary role in the measurement operation, not only can prevent the pipe mouth of the measured pipeline from being damaged by the traction rope, but also is conducive to improving the measurement accuracy of the pipeline measurement device.

[0005] According to an embodiment of the present application, the pipeline measurement auxiliary device includes: a center tube, the center tube is used to pass a traction rope, the outer diameter of the center tube is smaller than the inner diameter of the measured pipeline; a first support, the first support is fixedly arranged outside the center tube; a second support, the second support is movably sleeved outside the center tube; at least three groups of arm assemblies distributed in a circular array around the center line of the center tube, the arm assembly includes a first arm, a second arm and a support member, one end of the first arm is hinged to the first support, one end of the second arm is hinged to the second support, the other end of the first arm is hinged to the support member, the other end of the second arm is hinged to the support member or hinged to the other end of the first arm, and the support member is used to abut the inner wall of the measured pipeline; an elastic member, the elastic member is used to provide an elastic force to drive the second support close to the first support.

[0006] According to the pipeline measurement auxiliary device of the embodiment of the present application, at least the following beneficial effects are achieved: when it is necessary to perform a measurement operation, the traction rope is passed through the central tube and connected to the pipeline measurement device, and a force is applied to the second support to make the second support away from the first support, so that all the support members are simultaneously close to the central tube. At this time, the pipeline measurement auxiliary device of the embodiment of the present application is placed in the pipe mouth of the measured pipe, and then the external force applied to the second support is removed. At this time, the second support is close to the first support under the action of the elastic force provided by the elastic member, so that all the support members are simultaneously away from the central tube and abut against the inner wall of the measured pipe to adapt to the inner diameter of the measured pipe. At this time, the center line of the central tube is collinear with the center line of the measured pipe. During the measurement operation, the central tube can limit the position of the traction rope, so as to prevent the pipe mouth of the measured pipe from being damaged by the traction rope. At the same time, the limiting effect of the central tube can reduce the deviation of the traction rope relative to the center line of the measured pipe, so as to reduce the component force perpendicular to the center line of the measured pipe generated by the traction force of the traction rope, thereby facilitating the improvement of the measurement accuracy of the pipeline measurement device.

[0007] According to some embodiments of the present application, a limiting portion for abutting against an end surface of the measured pipeline is provided at the end of the support member.

[0008] According to some embodiments of the present application, the support member has an abutment surface for abutting against the inner wall of the measured pipeline, and a buffer pad is provided on the abutment surface.

[0009] According to some embodiments of the present application, the buffer pad is detachably disposed on the support member.

[0010] According to some embodiments of the present application, the elastic member is a tension spring, a third support located between the first support and the second support is fixedly disposed outside the central tube, one end of the tension spring is connected to the second support, and the other end of the tension spring is connected to the third support.

[0011] According to some embodiments of the present application, the elastic member is a compression spring, which is sleeved outside the center tube. The center tube is provided with an abutment portion which is spaced apart from the first support along the center line of the center tube. The second support is located between the first support and the abutment portion. One end of the compression spring abuts against the abutment portion, and the other end of the compression spring abuts against the second support.

[0012] According to some embodiments of the present application, the pipeline measurement auxiliary device further includes a plurality of quick-pull pins, and both ends of the first support arm and both ends of the second support arm are hinged by the quick-pull pins.

[0013] According to some embodiments of the present application, a quick-release tube clamp is provided at the end of the central tube, and the quick-release tube clamp is used to externally connect an extension tube of the central tube.

[0014] According to some embodiments of the present application, the support member is in the shape of an elongated strip, and the support member extends along the centerline direction of the central tube.

[0015] According to some embodiments of the present application, the support member has an abutment surface for abutting against the inner wall of the measured pipe, and the abutment surface is arc-shaped.

[0016] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 This is a schematic diagram of a state in which a pipeline measurement auxiliary device according to an embodiment of the present application is installed at the pipe mouth of a measured pipeline;

[0019] Figure 2 yes Figure 1 A partial enlarged schematic diagram in the middle;

[0020] Figure 3 yes Figure 1 A partial enlarged schematic diagram of point B in the middle;

[0021] Figure 4 yes Figure 1 A partial enlarged schematic diagram of point C in the middle.

[0022] Reference numerals:

[0023] Tested pipe a, central pipe 100, first support 200, second support 300, first support arm 410, second support arm 420, support member 430, limit portion 431, buffer pad 432, tension spring 500, third support 600, quick-release pin 700, quick-release pipe clamp 800. DETAILED DESCRIPTION

[0024] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0025] In the description of the present application, it should be understood that if orientation descriptions are involved, the orientations or positional relationships indicated, such as up, down, front, back, left, and right, are based on the orientations or positional relationships shown in the accompanying drawings. This is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present application.

[0026] In the description of this application, if the words "some", "greater than", "less than", "exceed", "above", "below", "within" etc. appear, "some" means one or more, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number, and "above", "below", "within", etc. are understood to include the number.

[0027] In the description of this application, if the words "first", "second", etc. appear, they are only used to distinguish technical features and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0028] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0029] Reference Figures 1 to 4 According to an embodiment of the present application, the pipeline measurement auxiliary device is used to be installed at the pipe mouth of the measured pipe a. The pipeline measurement auxiliary device includes a central pipe 100, a first support 200, a second support 300, an arm assembly and an elastic member.

[0030] Specifically, the central tube 100 is used to pass the traction rope, the outer diameter of the central tube 100 is smaller than the inner diameter of the measured pipe a, the first support 200 is fixedly arranged outside the central tube 100, and the second support 300 is movably sleeved outside the central tube 100 (that is, the second support 300 has a mounting through hole for passing the central tube 100), so that the second support 300 can slide relative to the central tube 100 along the center line of the central tube 100, and the second support 300 is staggered relative to the first support 200 along the center line of the central tube 100, wherein there are at least three groups of arm assemblies distributed in an annular array around the center line of the central tube 100, and the arm assembly includes a first arm 410, a second arm 4 20 and a support member 430, one end of the first arm 410 is hinged to the first support 200, one end of the second arm 420 is hinged to the second support 300, the other end of the first arm 410 (i.e., the end of the first arm 410 away from the first support 200) is hinged to the support member 430, the other end of the second arm 420 (i.e., the end of the second arm 420 away from the second support 300) is hinged to the support member 430 or hinged to the end of the first arm 410 away from the first support 200, the support member 430 is used to abut against the inner wall of the measured pipe a, and the elastic member acts on the second support 300 and is used to provide an elastic force to drive the second support 300 to approach the first support 200.

[0031] When measurement is required, the traction rope is passed through the central tube 100 and connected to the pipeline measuring device, and force is applied to the second support 300 to move the second support 300 away from the first support 200, so that all the support members 430 are simultaneously moved closer to the central tube 100. At this time, the pipeline measurement auxiliary device of the embodiment of the present application is placed in the pipe mouth of the measured pipe a, and then the external force applied to the second support 300 is removed. At this time, the second support 300 is close to the first support 200 under the action of the elastic force provided by the elastic member, so that all the support members 430 are simultaneously moved away from the central tube 100 and abut against the inner wall of the measured pipe a to adapt to the inner diameter of the measured pipe a. At this time, the center line of the central tube 100 is collinear with the center line of the measured pipe a. During the measurement process, the center tube 100 can limit the position of the traction rope, thereby preventing the pipe mouth of the measured pipe a from being damaged by the traction rope. At the same time, the limiting effect of the center tube 100 can reduce the degree of deviation of the traction rope relative to the center line of the measured pipe a, thereby reducing the component force perpendicular to the center line of the measured pipe a generated by the traction force of the traction rope, which is beneficial to improve the measurement accuracy of the pipeline measuring device.

[0032] Specifically, it should be noted that the inner diameter of the center tube 100 is much smaller than the inner diameter of the measured pipe a, wherein the smaller the inner diameter of the center tube 100 is, the stronger the restrictive effect of the center tube 100 on the traction rope is, and the more significant the auxiliary effect of the pipeline measurement auxiliary device of the embodiment of the present application is.

[0033] Reference Figure 1 and Figure 4 In some embodiments, in the same arm assembly, one end of the second arm 420 away from the second support 300 is hinged to the support member 430. Of course, the end of the second arm 420 away from the second support 300 can also be hinged to the end of the first arm 410 away from the first support 200, which is not limited here.

[0034] Reference Figure 1 In some embodiments, the number of arm assemblies is three, which is conducive to ensuring the stability of the pipeline measurement auxiliary device of the embodiment of the present application when in use. Of course, the number of arm assemblies can also be four or more, which is not limited here.

[0035] Reference Figure 1 and Figure 2 In some of the embodiments, the same group of arm assemblies includes two first arms 410 staggered along the center line of the central tube 100. Correspondingly, the number of first supports 200 is two, and the two first supports 200 are staggered along the center line of the central tube 100. By increasing the number of first arms 410 in the same group of arm assemblies, it is beneficial to improve the supporting strength of the arm assembly, and at the same time, it is beneficial to improve the stability and reliability of the arm assembly during operation.

[0036] It should be noted that in some embodiments, the first support 200 is independent of the central tube 100, and the first support 200 is sleeved outside the central tube 100 (i.e., the first support 200 has a mounting through hole for penetrating the central tube 100) and fixed by screws. Of course, the first support 200 can also be integrally formed with the central tube 100, which is not limited here.

[0037] Reference Figure 1 and Figure 4 In some of the embodiments, a limiting portion 431 for abutting against the end face of the measured pipe a is provided at the end of the support member 430. When in use, the limiting portion 431 abuts against the end face of the measured pipe a, which can limit the pipeline measurement auxiliary device of the embodiment of the present application from sliding into the measured pipe a, thereby facilitating improving the stability and reliability of the pipeline measurement auxiliary device of the embodiment of the present application during operation.

[0038] Reference Figure 1 and Figure 4 In some embodiments, the support member 430 has an abutting surface for abutting the inner wall of the measured pipe a, and a buffer pad 432 is provided on the abutting surface. The support member 430 contacts the inner wall of the measured pipe a through the buffer pad 432, which helps to prevent the inner wall of the measured pipe a from being damaged by the support member 430.

[0039] It should be noted that, in some embodiments, the buffer pad 432 is detachably disposed on the support member 430 , so that when the buffer pad 432 fails, it is convenient to replace the buffer pad 432 .

[0040] Specifically, the buffer pad 432 is connected to the abutting surface of the support member 430 through screws. Of course, the buffer pad 432 can also be bonded to the abutting surface of the support member 430, which is not limited here.

[0041] Reference Figures 1 to 3 In some embodiments, the elastic member is a tension spring 500, and a third support 600 located between the first support 200 and the second support 300 is fixedly arranged outside the central tube 100, one end of the tension spring 500 is connected to the second support 300, and the other end of the tension spring 500 is connected to the third support 600. The structure is simple and easy to implement.

[0042] It should be noted that in some embodiments, the third support 600 is independent of the central tube 100, and the third support 600 is sleeved outside the central tube 100 (i.e., the third support 600 has a mounting through hole for penetrating the central tube 100) and fixed by screws. Of course, the third support 600 can also be integrally formed with the central tube 100, which is not limited here.

[0043] It should be noted that in some other embodiments, one end of the tension spring 500 is connected to the first support 200, and the other end of the tension spring 500 is connected to the second support 300, which is not limited here. In this case, the third support 600 mentioned above does not need to be provided.

[0044] Specifically, there are a plurality of tension springs 500 distributed in a circular array around the center line of the central tube 100, so as to provide elastic force uniformly.

[0045] It should be noted that in some other embodiments, the elastic member may also be a compression spring, which is not limited here. Specifically, the compression spring is sleeved outside the central tube 100, and the central tube 100 is provided with an abutment portion spaced relative to the first support 200 along the center line of the central tube 100, the second support 300 is located between the first support 200 and the abutment portion, one end of the compression spring abuts against the abutment portion, and the other end of the compression spring abuts against the second support 300.

[0046] Reference Figures 1 to 4In some of the embodiments, the pipeline measurement auxiliary device also includes a plurality of quick-pull pins 700, and both ends of the first arm 410 and both ends of the second arm 420 are hinged by the quick-pull pins 700. Both ends of the first arm 410 and both ends of the second arm 420 are hinged with the quick-pull pins 700 as pivot axes, so that the first arm 410 and the second arm 420 can be quickly disassembled and assembled, and then the first arm 410 and the second arm 420 of different sizes can be quickly replaced on site, so as to optimize the ability of the pipeline measurement auxiliary device of the embodiment of the present application to adapt to the inner diameter of the measured pipeline a.

[0047] Specifically, the quick-pull pin 700 is also called a quick-release pin or a quick-release pin, which is a well-known technology in the mechanical field, and its specific structure and working principle are not described in detail here.

[0048] Reference Figure 1 In some of the embodiments, a quick-release pipe clamp 800 is provided at the end of the central pipe 100, and the quick-release pipe clamp 800 is used to connect an extension pipe of the central pipe 100 to adapt to certain special working environments.

[0049] Specifically, the quick-release pipe clamp 800 is a well-known technology in the mechanical field, and its specific structure and working principle are not described in detail here.

[0050] Reference Figure 1 and Figure 4 In some embodiments, the support member 430 is in the shape of an elongated strip and extends along the center line direction of the central tube 100, which is beneficial to increase the contact area between the support member 430 and the inner wall of the measured pipe a, thereby facilitating the improvement of the stability and reliability of the support arm assembly during operation, and at the same time, preventing the inner wall of the measured pipe a from being deformed or damaged due to concentrated force.

[0051] It should be noted that, in some of the embodiments, the support member 430 has an abutting surface for abutting against the inner wall of the measured pipe a, and the abutting surface is arc-shaped so that the support member 430 can better adapt to the inner wall of the measured pipe a.

[0052] In the description of this specification, if the description involves reference terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples" and "some examples", it means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0053] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A pipeline measurement auxiliary device, characterized in that: include: A central tube, the central tube is used for passing the traction rope, and the outer diameter of the central tube is smaller than the inner diameter of the measured pipeline; A first support, the first support being fixedly disposed outside the central tube; A second support, the second support being movably sleeved outside the central tube; At least three groups of arm assemblies distributed in a circular array around the center line of the central pipe, the arm assembly comprising a first arm, a second arm and a support member, one end of the first arm is hinged to the first support, one end of the second arm is hinged to the second support, the other end of the first arm is hinged to the support member, the other end of the second arm is hinged to the support member or hinged to the other end of the first arm, and the support member is used to abut against the inner wall of the measured pipe; An elastic member is used for providing an elastic force for driving the second support to approach the first support.

2. The pipeline measurement auxiliary device according to claim 1, characterized in that: The end of the support member is provided with a limiting portion for abutting against the end surface of the measured pipeline.

3. The pipeline measurement auxiliary device according to claim 1, characterized in that: The support member has a contact surface for contacting the inner wall of the measured pipeline, and a buffer pad is arranged on the contact surface.

4. The pipeline measurement auxiliary device according to claim 3, characterized in that: The buffer pad is detachably arranged on the supporting member.

5. The pipeline measurement auxiliary device according to claim 1, characterized in that: The elastic member is a tension spring, a third support located between the first support and the second support is fixedly arranged outside the central tube, one end of the tension spring is connected to the second support, and the other end of the tension spring is connected to the third support.

6. The pipeline measurement auxiliary device according to claim 1, characterized in that: The elastic member is a compression spring, which is sleeved outside the center tube. The center tube is provided with an abutment portion which is spaced apart from the first support along the center line of the center tube. The second support is located between the first support and the abutment portion. One end of the compression spring abuts against the abutment portion, and the other end of the compression spring abuts against the second support.

7. The pipeline measurement auxiliary device according to claim 1, characterized in that: The pipeline measurement auxiliary device also includes a plurality of quick-pull pins, and both ends of the first support arm and both ends of the second support arm are hinged by the quick-pull pins.

8. The pipeline measurement auxiliary device according to claim 1, characterized in that: A quick-release pipe clamp is provided at the end of the central pipe, and the quick-release pipe clamp is used for externally connecting an extension pipe of the central pipe.

9. The pipeline measurement auxiliary device according to claim 1, characterized in that: The support member is in the shape of an elongated strip and extends along the center line direction of the central tube.

10. The pipeline measurement auxiliary device according to claim 1, characterized in that: The support member has a contact surface for contacting the inner wall of the measured pipeline, and the contact surface is arc-shaped.

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