In-pipe scanning device

Abstract

The utility model relates to an in-pipe scanning device which comprises a main body, the front end of the main body is provided with a probe assembly, the main body is provided with a crawling mechanism, the crawling mechanism comprises at least two sets of variable-diameter pressing assemblies, and at least one of the two ends of each variable-diameter pressing assembly can slide in the axial direction of the surface of the main body. Axial limiting devices connected with the main body are arranged on the two sides of the crawling mechanism correspondingly, compression springs are arranged between the variable-diameter pressing assembly and the axial limiting devices, the variable-diameter pressing assembly comprises at least two pressing wheel components, and each pressing wheel component comprises two connecting rods with the outer ends hinged to each other. The inner end of the connecting rod is hinged to the main body or a sliding sleeve on the surface of the main body, a pressing wheel is arranged at the outer end of the connecting rod, a driving motor is arranged on at least one pressing wheel component of the multiple pressing wheel components of the multiple reducing pressing assemblies, and the driving motor is arranged in a hub of the pressing wheel. The in-pipe scanning device is simple in structure, small in size and suitable for reducer pipes.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline detection equipment, in particular to an in-pipe scanning device. Background Art

[0002] At present, the internal inspection of pipelines is generally carried out by scanning and inspecting the inner wall of the pipeline through a scanning frame hung on an automatic crawling trolley. The tooling size and overall volume of the pipeline scanning device with this structure are large, and it is not suitable for the variable diameter section in the pipeline, which seriously affects the scope of application of the scanning device.

[0003] A Chinese patent with publication number "CN116297810A" discloses a method and system for electromagnetic detection of the inner wall of a pipeline suitable for various calibers, wherein the electromagnetic detection system for the inner wall of the pipeline includes a traction module, and an electromagnetic detection module is arranged at the front end of the traction module.

[0004] A variable diameter clamping device is provided on the traction module.

[0005] Although the electromagnetic detection system for the inner wall of the pipeline realizes the scanning operation of pipelines of different diameters through the variable diameter clamping device on the traction module, its overall volume is still large and the structure is relatively complex. At the same time, the clamping wheel at the output end of the scissor-arm type variable diameter clamping device expands or contracts at the same time when working, which makes it only applicable to the scanning of pipelines of different diameters. For a single variable diameter pipe, due to the simultaneous expansion or contraction of the clamping wheel, some of the clamping wheels cannot be pressed against the pipe wall, thereby reducing its compression stability and detection effect. Utility Model Content

[0006] In order to solve the above-mentioned technical problems of large overall volume, complex structure and poor use effect on reducer pipes, the purpose of the utility model is to provide a pipe scanning device with simple structure, small volume and suitable for reducer pipes.

[0007] The utility model discloses an in-pipe scanning device, comprising a main body, a probe assembly being provided at the front end of the main body, a crawling mechanism being provided on the main body, the crawling mechanism comprising at least two groups of variable diameter clamping assemblies, at least one of the two ends of the variable diameter clamping assembly being able to slide axially along the surface of the main body, axial limiting devices connected to the main body being provided on both sides of the crawling mechanism, a compression spring being provided between the variable diameter clamping assembly and the axial limiting device, the variable diameter clamping assembly comprising at least two clamping wheel components, each clamping wheel component comprising two connecting rods whose outer ends are hinged to each other, the inner end of the connecting rod is hinged to a sliding sleeve or a fixed sleeve on the surface of the main body, a clamping wheel being provided at the outer end of the connecting rod, and at least one clamping wheel component among the plurality of clamping wheel components of the plurality of variable diameter clamping assemblies being provided with a driving motor, the driving motor being provided in a wheel hub of the clamping wheel, and the output end of the driving motor being connected to the clamping wheel.

[0008] The advantage of the in-pipe scanning device is that the crawling mechanism on its main body includes at least two groups of variable-diameter clamping assemblies, a compression spring is arranged between the variable-diameter clamping assembly and the axial limit device, and at least one of the two ends of the variable-diameter clamping assembly can slide axially along the surface of the main body, so that each variable-diameter clamping assembly can expand or contract independently, thereby making the in-pipe scanning device not only applicable to the scanning of pipelines of different models, but also suitable for the scanning of variable-diameter pipelines, and its structure is relatively simple and its volume is small.

[0009] Furthermore, in the in-pipe scanning device of the utility model, the probe assembly includes a rotating motor fixedly mounted at the front end of the main body, the output shaft of the rotating motor is connected to a turntable, a probe bracket is provided on the surface of the turntable, and the probe is arranged on the probe bracket.

[0010] The arrangement of components such as the rotating motor and the turntable enables the probe to achieve forward and reverse rotation under the drive of the rotating motor, which not only realizes a comprehensive scan of the pipe wall, but also avoids entanglement of cables connecting the probe and other components.

[0011] Furthermore, in the in-pipe scanning device of the utility model, a fixed sleeve is fixedly provided in the middle of the main body, sliding sleeves that slide with the main body are provided at both ends of the main body, two sets of variable diameter clamping assemblies are respectively located between the fixed sleeve and the sliding sleeve, a connecting rod on one side of the variable diameter clamping assembly is hinged to the fixed sleeve, and a connecting rod on the other side of the variable diameter clamping assembly is hinged to the sliding sleeve.

[0012] The setting of the fixed sleeve realizes the overall positioning of the crawling mechanism, so that the two sets of variable diameter clamping components can be located on the left and right sides of the middle of the main body respectively, thereby improving the stability of the operation of the in-pipe scanning device.

[0013] Furthermore, in the in-pipe scanning device of the utility model, the compression spring is arranged between the axial limiting device and the sliding sleeve.

[0014] The arrangement of the compression spring enables the variable diameter clamping assembly to expand outwards under the elastic force of the compression spring, thereby making the clamping wheel fit against the pipe wall.

[0015] Furthermore, in the in-pipe scanning device of the present invention, the number of the variable diameter clamping assemblies is two groups, and each group of the variable diameter clamping assemblies includes four clamping wheel components.

[0016] Two sets of variable diameter clamping assemblies, each set of which includes four clamping wheel components, make the crawling mechanism more stable as a whole and more stable when walking.

[0017] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it in accordance with the contents of the specification, the following embodiments of the utility model are described in detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the right side view of the in-pipe scanning device.

[0019] Figure 2 It is a three-dimensional diagram of the in-pipe scanning device.

[0020] Figure 3 It is another stereoscopic view of the in-pipe scanning device.

[0021] Figure 4 It is a three-dimensional diagram of the probe assembly of the in-pipe scanning device.

[0022] Figure 5 This is the right side view of the crawling assembly of the in-pipe scanning device.

[0023] Figure 6 It is a three-dimensional diagram of the crawling assembly of the in-pipe scanning device.

[0024] Figure 7 It is a three-dimensional view of the pinch wheel component.

[0025] Figure 8 This is a diagram showing the status of the in-pipe scanning device in use.

[0026] In the figure, main body 1, compression spring 2, connecting rod 3, sliding sleeve 4, clamping wheel 5, fixed sleeve 6, rotating motor 7, rotating motor 7, turntable 8, probe bracket 9, probe 10, cable 11, limiting ring 13, movable articulated seat 14, fixed articulated seat 15, U seat 16, pipe groove 17, external control console 18. DETAILED DESCRIPTION

[0027] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0028] Example 1: See Figures 1 to 8 The in-pipe scanning device of this embodiment includes a main body 1, a probe assembly is provided at the front end of the main body, a crawling mechanism is provided on the main body, the crawling mechanism includes two groups of variable diameter clamping assemblies, at least one of the two ends of the variable diameter clamping assembly can slide axially along the surface of the main body, and axial limiting devices connected to the main body are provided on both sides of the crawling mechanism, and a compression spring 2 is provided between the variable diameter clamping assembly and the axial limiting device. The variable diameter clamping assembly includes four clamping wheel components, each of which includes two connecting rods 3 whose outer ends are hinged to each other, and the inner end of the connecting rod is hinged to the sliding sleeve 4 or the fixed sleeve 6 on the surface of the main body, and the outer end of the connecting rod is provided with a clamping wheel 5. The clamping wheel component is provided with a driving motor, which is a hub motor, and its body is arranged in the hub of the clamping wheel and is installed on the hinge shaft through a bearing. The rotating part of the hub motor is fixedly connected to the hub of the clamping wheel, thereby driving the clamping wheel to rotate.

[0029] The in-pipe scanning device of the present embodiment has a crawling mechanism on its main body including two groups of variable diameter clamping assemblies, a compression spring is provided between the variable diameter clamping assembly and the axial limit device, at least one of the two ends of the variable diameter clamping assembly can slide axially along the surface of the main body, so that each variable diameter clamping assembly can expand or contract independently, thereby making the in-pipe scanning device not only applicable to the scanning of pipelines of different models, but also applicable to the scanning of variable diameter pipelines, and its structure is relatively simple and its volume is relatively small.

[0030] The probe assembly is used to detect the inner wall of the pipeline, and it can be a fixed probe assembly fixed to the front end of the main body, or a rotating probe assembly driven to rotate by a rotating motor.

[0031] In this embodiment, the probe assembly includes a rotating motor 7 fixedly mounted at the front end of the main body, the output shaft of the rotating motor is connected to a turntable 8, a probe bracket 9 is provided on the surface of the turntable, and a probe 10 is arranged on the probe bracket. The specific type of the probe can be selected according to the detection requirements.

[0032] The surface of the turntable may also be provided with a distance sensor for detecting the distance from the pipe wall, a camera for observing the situation inside the pipe, a lighting lamp for illumination and other components.

[0033] The probe holder can be a fixed probe holder or a mobile probe holder that can be moved by a displacement device such as an electric telescopic rod. The mobile probe holder can change the position of the probe so that it can be moved to a predetermined position, thereby improving the detection effect on the pipeline.

[0034] The rotating motor is used to drive the turntable to rotate, so as to scan the pipe wall. During scanning, the rotating motor drives the turntable to rotate 180 degrees forward and backward, which can not only scan the pipe wall, but also avoid the entanglement of the wire harness.

[0035] The body is used to install the rotating motor, crawling mechanism and other components. In this embodiment, the body is a cylindrical body, the rotating motor body is arranged at the front end of the cylindrical body, and the cable 11 connecting the rotating motor and the probe and other components can be output through the inner cavity of the cylindrical body.

[0036] The axial limiting device on the main body is used to realize the axial limiting of the crawling mechanism, and prevent the two ends of the crawling mechanism from slipping off from the front and rear sides of the body. Specifically, the axial limiting devices are respectively arranged on both sides of the crawling mechanism, and the axial limiting device on the front side is used to limit the front end of the crawling mechanism to move forward along the axial direction, and the axial limiting device on the rear side is used to limit the rear end of the crawling mechanism to move backward along the axial direction.

[0037] The axial limiting device can be a structure such as a fixed plate, a hinged seat or an annular flange fixedly connected to the main body.

[0038] In this embodiment, the axial limiting devices on both sides are both limiting rings 13 fixedly connected to the main body, and the limiting rings can be connected to the main body through locking screws.

[0039] The crawling mechanism can expand or contract according to the change of the pipe diameter so that the clamping wheel on it is in close contact with the pipe wall, thereby maintaining the walking stability of the in-pipe scanning device.

[0040] The crawling mechanism includes two groups of variable diameter clamping assemblies, each of which includes four clamping wheel components, each of which includes two connecting rods whose outer ends are hinged to each other, and the inner ends of the two connecting rods are hinged to the sliding sleeve or fixed sleeve on the surface of the main body. In this embodiment, the inner ends of the connecting rods located on both sides of the main body are hinged to the movable hinge seat 14 on the sliding sleeve, the sliding sleeve is sleeved on the surface of the main body and can slide actively, the movable hinge seat is fixedly connected to the sliding sleeve, and the inner end of the connecting rod can slide along the surface of the main body along with the sliding sleeve.

[0041] The inner end of the connecting rod located in the middle of the middle body is hinged to the fixed sleeve in the middle of the main body. Specifically, a fixed hinge seat 15 is provided on the fixed sleeve, and the inner end of the connecting rod is hinged to the fixed hinge seat. The fixed sleeve is fastened to the main body, thereby positioning the crawling mechanism.

[0042] The outer end of the connecting rod refers to an end of the connecting rod away from the main body, and the inner end of the connecting rod refers to an end of the connecting rod close to the main body.

[0043] A compression spring is provided between the limiting ring and the sliding sleeve of the adjacent variable diameter clamping device, which can be sleeved on the main body. The two ends of the compression spring are respectively in contact with the adjacent variable diameter clamping component and the limiting ring. The compression spring between the variable diameter clamping component and the limiting ring can apply elastic force to the adjacent variable diameter clamping component, thereby driving the clamping wheel on the variable diameter clamping component to expand outward so that it can be in close contact with the pipe wall.

[0044] At least one end of each variable diameter clamping assembly can slide axially along the main body surface, so that the variable diameter clamping assembly can expand outward under the elastic force of the compression spring, or contract inward under the pressure of the pipe wall, so as to always keep the clamping wheel in close contact with the pipe wall.

[0045] In this embodiment, the inner ends of the connecting rods on one side of the variable diameter clamping assembly are arranged on the sliding sleeve, and the inner ends of the connecting rods on the other side are hinged to the fixed sleeve in the middle.

[0046] The driving motor on the pinch wheel component is used to drive the pinch wheel at its output end to rotate, so as to drive the entire in-pipe scanning device to move along the pipeline, thereby enabling the probe to scan the pipe wall. In this embodiment, the driving motor is a hub motor, so that the pinch wheel and the hub motor form an integrated mechanism, thereby making the overall structure of the pinch wheel component simpler and the movement of the crawling mechanism more stable.

[0047] During use, when the scanning device moves to the variable diameter section, the clamping wheels of each variable diameter clamping assembly move radially as the pipe diameter changes, thereby driving the entire variable diameter clamping assembly to expand or contract, thereby achieving the purpose of the clamping wheel always fitting against the pipe wall.

[0048] During the expansion or contraction process, the sliding sleeve slides along the surface of the main body under the elastic force of the compression spring and the force of the connecting rod to achieve the expansion or contraction of the variable diameter clamping assembly.

[0049] In this embodiment, the outer ends of the connecting rods are provided with U-seats 16 of different sizes, and the connecting rods are hinged on the hinge shaft through the U-seats. The central axis of the above-mentioned clamping wheel is the hinge shaft, and the clamping wheel can be arranged in the U-seats.

[0050] During inspection, the pipeline is placed in the pipe groove 17, and the pressure wheels of the pipe scanning device are pressed against the inner wall of the pipeline under the action of the compression spring. The probe, rotating motor, driving motor and other components thereon are connected to the external control console 18 through cables. The pressure wheel rotates under the drive of the driving motor, thereby driving the entire pipe scanning device to move along the inner wall of the pipeline. During the movement, the rotating motor drives the turntable to rotate forward and reverse, so that the probe on it can scan the pipe wall.

[0051] The above is only a preferred implementation of the utility model, which is used to assist those skilled in the art to implement the corresponding technical solution, and is not used to limit the scope of protection of the utility model. The scope of protection of the utility model is defined by the attached claims. It should be pointed out that for ordinary technicians in this field, on the basis of the technical solution of the utility model, several equivalent improvements and variations can be made, and these improvements and variations should also be regarded as the scope of protection of the utility model. At the same time, it should be understood that although this specification is described in accordance with the above-mentioned implementation mode, not every implementation mode contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions of each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A pipe scanning device, comprising a main body (1), a probe assembly being provided at the front end of the main body, and a crawling mechanism being provided on the main body, characterized in that: The crawling mechanism comprises at least two groups of variable diameter clamping assemblies, at least one of the two ends of the variable diameter clamping assemblies can slide axially along the surface of the main body, and axial limiting devices connected to the main body are respectively provided on both sides of the crawling mechanism. A compression spring (2) is provided between the variable diameter clamping assembly and the axial limiting device. The variable diameter clamping assembly comprises at least two clamping wheel components, each of which comprises two connecting rods (3) whose outer ends are hinged to each other, and the inner end of the connecting rod is hinged to a sliding sleeve (4) or a fixed sleeve (6) on the surface of the main body, and a clamping wheel (5) is provided at the outer end of the connecting rod. Among the multiple clamping wheel components of the multiple variable diameter clamping assemblies, at least one clamping wheel component is provided with a driving motor, and the driving motor is arranged in the hub of the clamping wheel, and the output end of the driving motor is connected to the clamping wheel.

2. The in-pipe scanning device according to claim 1, characterized in that: The probe assembly comprises a rotating motor (7) fixedly mounted at the front end of the main body, the output shaft of the rotating motor is connected to a rotating disk (8), a probe bracket (9) is provided on the surface of the rotating disk, and the probe (10) is arranged on the probe bracket.

3. The in-pipe scanning device according to claim 1, characterized in that: A fixed sleeve is fixedly provided in the middle of the main body, and sliding sleeves that slide with the main body are provided at both ends of the main body. Two sets of variable diameter clamping assemblies are respectively located between the fixed sleeve and the sliding sleeve. The connecting rod on one side of the variable diameter clamping assembly is hinged to the fixed sleeve, and the connecting rod on the other side of the variable diameter clamping assembly is hinged to the sliding sleeve.

4. The in-pipe scanning device according to claim 3, characterized in that: The compression spring is arranged between the axial limiting device and the sliding sleeve.

5. The in-pipe scanning device according to claim 1, characterized in that: The number of the variable diameter clamping assemblies is two groups, and each group of variable diameter clamping assemblies includes four clamping wheel components.

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