Pressure pipe roundness detection device for hydraulic engineering

Abstract

The utility model discloses a pressure pipe roundness detection device for hydraulic engineering, which is used for solving the problem of detecting the inner diameter roundness of an engineering pipeline. The detection device comprises a walking frame assembly and a detection assembly, discs are installed at the front end and the rear end of an installation cylinder respectively, at least three supporting legs are movably connected to the discs at equal intervals in the circumferential direction, wheels are arranged at the outer ends of the supporting legs, steel pins are arranged at the inner ends of the supporting legs, and the steel pins are movably connected with sliding grooves of adjusting discs. The adjusting disc is arranged on the mounting cylinder in a sleeving manner and is in fit fit with the disc, and a locking bolt penetrates through a long-strip hole in the disc and a bolt hole in the adjusting disc to lock the disc and the adjusting disc; the detection assembly is installed on one side of the installation cylinder, and a traction rope is arranged on the other side of the installation cylinder. The device can be pulled to advance in the pipeline through the pulling rope, and a reference is set, so that rapid measurement on a construction site with a relatively large engineering quantity is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to a pressure pipe roundness detection device for water conservancy projects belongs to pipe detection equipment technical field. BACKGROUND

[0002] Roundness detection index is an important index for measuring the degree of steel pipe cross section approaching ideal circle, and its value directly affects the assembly accuracy and use performance of steel pipe in engineering, so it is necessary to detect the roundness of steel pipe.

[0003] For the detection of steel pipe roundness, currently, the roundness of steel pipe is mainly detected by using a dial gauge, for example, a steel pipe roundness detection device is introduced in Chinese document CN111266647A, which at least includes a base, a first driving motor, a servo motor, a first rotating roller and a second rotating roller arranged in parallel, and a dial gauge placed above the first rotating roller and the second rotating roller. However, in actual engineering, the inner diameter roundness index of steel pipe is more important than the outer diameter roundness index, and based on the existing outer diameter roundness detection equipment, it is impossible to detect the inner diameter roundness of large diameter pipe, therefore, the present inner diameter roundness detection device is researched to solve the problem of engineering pipe inner diameter roundness detection. SUMMARY

[0004] The inner diameter roundness detection of large diameter engineering pipe is a difficulty, and the present utility model provides a pressure pipe roundness detection device for water conservancy projects to solve the problem of engineering pipe inner diameter roundness detection.

[0005] The technical scheme adopted by the utility model to solve its technical problems is:

[0006] The pressure pipe roundness detection device for water conservancy projects comprises a walking frame assembly and a detection assembly, characterized in that: the walking frame assembly comprises a mounting cylinder, a disc, an adjusting disc and a supporting leg, wherein one disc is installed at the front and rear ends of the mounting cylinder respectively, at least three supporting legs are movably connected to the disc at equal intervals in the circumferential direction, the outer end of the supporting leg is provided with a wheel, and the inner end is provided with a steel pin, the steel pin movably connects the sliding groove of the adjusting disc, the adjusting disc is sleeved on the mounting cylinder and is matched with the disc, and a locking bolt passes through the long hole on the disc and the bolt hole on the adjusting disc and locks them; the detection assembly is installed on one side of the mounting cylinder, and a traction rope is arranged on the other side of the mounting cylinder.

[0007] Further, the detection assembly comprises a reduction motor, a supporting body, a rotating disc and a handheld laser range finder, wherein the reduction motor is installed at the end of the mounting cylinder through the supporting body, the outer end of the motor shaft is provided with a rotating disc coaxially arranged with the mounting cylinder, and the handheld laser range finder is fixedly installed on the rotating disc, and the laser beam of the handheld laser range finder irradiates along the radial direction of the rotating disc.

[0008] Further, the support leg slides in a guide cylinder seat, and the guide cylinder seat is equidistantly arranged along the circumferential direction of the disc.

[0009] Further, the axis of the support leg and the axis of the mounting cylinder are arranged perpendicular to each other.

[0010] Further, the handheld laser range finder has a measurement accuracy less than or equal to ±1.0mm.

[0011] Further, the disc and the mounting cylinder are coaxially arranged, and the two are in an axis vertical relationship.

[0012] Further, the sliding groove is an involute with a diameter gradually changing along the surface of the adjusting disc.

[0013] Further, the wheel is a nylon wheel or a rubber wheel.

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

[0015] The device can be advanced in the pipeline by traction rope, and a reference is set to realize rapid measurement of a construction site with large engineering quantity.

[0016] The device is not only suitable for detecting the roundness of the inner diameter of the steel pipe, but also suitable for detecting the pipeline commonly used in water conservancy projects such as cement pipe and spiral steel pipe, and is more widely applicable and can realize rapid detection. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a perspective view of the device, showing the traction side.

[0018] Figure 2 It is a perspective view of the device, showing the detection side.

[0019] Figure 3 It is a full sectional view of the device.

[0020] Figure 4 It is an application diagram of the device in the pipeline.

[0021] Figure 5 It is an end view of the device.

[0022] Figure 6 It is a sectional view of the adjusting disc.

[0023] Figure 7 It is an application diagram of the device in the pipeline, showing the three-dimensional state.

[0024] IN THE DRAWINGS:

[0025] 00 adjustable support frame, 01 pipeline to be measured,

[0026] 10 mounting cylinder, 20 disc, 21 guide cylinder seat, 22 long hole, 30 adjusting disc, 31 sliding slot, 32 bolt, 40 support leg, 41 wheel, 42 steel pin, 50 speed reducer motor, 60 support body, 70 rotating disc, 80 handheld laser range finder, 90 traction rope. DETAILED DESCRIPTION

[0027] The pressure pipe roundness detection device for water conservancy projects, the embodiment will be combined with the description of the drawings Figure 1 to the Figure 7 A more detailed description will be given.

[0028] The device is an electromechanical product, including a walking frame assembly and a detection assembly, wherein the walking frame assembly is installed inside the pipe to be detected and rolls by the wheels set to avoid rigid friction. The detection assembly is arranged at one end of the walking frame assembly and measures the diameter at different angles (at least 4, usually 3 o'clock, 6 o'clock, 9 o'clock, and 12 o'clock) by rotation, and the difference between the maximum and minimum values is calculated as the roundness deviation.

[0029] The walking frame assembly described above is composed of a mounting cylinder 10, a disc 20, an adjusting disc 30, a support leg 40, and a locking bolt. The mounting cylinder 10 is a circular steel cylinder, and the diameter of the mounting cylinder 10 is much smaller than the inner diameter of the pipe to be detected. Two annular discs 20 are sleeved and welded at the front and rear ends of the mounting cylinder. The discs are coaxial with the mounting cylinder and have an axial vertical relationship between them.

[0030] The adjusting disc 30 is sleeved on the mounting cylinder, and the adjusting disc is in contact with the disc described above.

[0031] Five guide cylinder seats 21 are installed on the disc 20 described above, and the five guide cylinder seats are arranged at equal intervals along the circumference of the mounting cylinder, for example, welded and fixed. A support leg 40 is installed in the guide hole of each guide cylinder seat, so that the mounting leg has a sliding fit relative to the guide cylinder seat. The axis of the support leg 40 is perpendicular to the axis of the mounting cylinder. A wheel 41 is installed at the outer end of the support leg, which is preferably a nylon wheel or a rubber wheel. The wheel is used to cooperate with the inner wall of the pipe to be detected. A steel pin 42 is arranged at the other end of the support leg, that is, the inner end. The steel pin is in movable cooperation with the sliding slot on the adjusting disc, that is, the end of the steel pin is inserted into the sliding slot.

[0032] The adjusting disc 30 is installed on the installation cylinder and can rotate relative to the installation cylinder, five sliding grooves 31 are arranged on the adjusting disc, each sliding groove is an involute, one end of the sliding groove is small in diameter, the other end is large in diameter, and the involute is formed between the two ends. Each sliding groove corresponds to a steel pin 42, rotating the adjusting disc changes the relative position of the sliding groove and the steel pin, and drives the support leg to have a relative sliding action in the axial direction.

[0033] An adjusting and locking structure is further arranged between the adjusting disc and the disc, and one possible way is that five long strip holes 22 are arranged on the disc 20 at equal intervals along the circumferential direction, the long strip holes are arc-shaped long strip holes, and the arc-shaped arc of the long strip holes is coaxial with the disc. A bolt hole is arranged on the adjusting disc 30, the bolt hole corresponds to the long strip hole one by one, and a bolt 32 is arranged between the long strip hole and the bolt hole. Loosening the nut can adjust the angle of the adjusting disc relative to the disc, and locking the nut can make the adjusting disc fit on one side of the disc. During the adjusting process, the relative positions of the five support legs are adjusted synchronously, that is, the synchronous adjustment of the five support legs is realized, which ensures that the installation cylinder is coaxially arranged with the circular pipeline to be detected.

[0034] The disc 20, the adjusting disc 30 and the support leg 40 together form an annular adjustable support frame 00, and the number of the adjustable support frame is two, which is arranged at the front and rear ends of the installation cylinder.

[0035] A detection assembly is installed at the front end of the installation cylinder, and a handheld laser range finder is arranged in the detection assembly. The handheld laser range finder is preferably a Leica Disto X4, and the measurement accuracy can reach ±1.0 mm. A rope hole is arranged at the rear end of the installation cylinder for fixing the traction rope 90. This is suitable for detecting the inner diameter of large-scale steel pipes and cement pipes with a diameter greater than 1 meter.

[0036] Specifically, the detection assembly comprises a reduction motor 50, a support body 60, a rotating disc 70 and a handheld laser range finder 80. The reduction motor 50 is installed in the space inside the installation cylinder through the support body, and the motor shaft of the installed reduction motor 50 is coaxially arranged with the installation cylinder. A rotating disc 70 is installed at the outer end of the motor shaft, and a handheld laser range finder 80 is fixed on the rotating disc by a steel hoop. The laser beam of the handheld laser range finder is located in the radial direction of the rotating disc.

[0037] The use method is as follows:

[0038] The device is placed inside the pipeline 01 to be measured, and is pulled along the length direction of the pipeline, a section to be measured is selected to stop pulling, and a deceleration motor drives the handheld laser range finder to perform point-like measurement, for example, 3 o'clock, 6 o'clock, 9 o'clock and 12 o'clock directions are selected to perform measurement, among the four direction values, the maximum value and the minimum value are selected, and the difference between the maximum value and the minimum value is calculated, so that the pipeline roundness deviation of the section can be obtained.

[0039] Suitable scene: the measurement accuracy of Leica Disto X4 is ±1.0 mm, therefore, this kind of situation is suitable for the on-site rapid detection of the inner diameter of a large-diameter pipeline with an inner diameter greater than 1 m, especially greater than 2 m.

[0040] The embodiment of the present application solves the problem of detecting the roundness of the inner diameter of a large-size water conservancy engineering pipeline.

[0041] The above-described embodiments only describe the preferred embodiments of the present application, and do not limit the scope of the present application, and various modifications and improvements of the present application made by those skilled in the art without departing from the design spirit of the present application shall fall within the protection scope of the present application defined by the claims.

Claims

1. A pressure pipe roundness detection device for hydraulic engineering, comprising a walking frame assembly and a detection assembly, characterized in that: The walking frame assembly comprises a mounting cylinder, a disc, an adjusting disc and support legs, wherein a disc is mounted at each of the front and rear ends of the mounting cylinder, the disc is movably connected with at least three support legs at equal intervals in the circumferential direction, the outer end of the support leg is provided with a wheel, the inner end is provided with a steel pin, the steel pin is movably connected with a sliding groove of the adjusting disc, the adjusting disc is sleeved on the mounting cylinder and is in close cooperation with the disc, a locking bolt passes through a long hole on the disc and a bolt hole on the adjusting disc and locks the two together, and the detecting assembly is mounted on one side of the mounting cylinder and a traction rope is arranged on the other side of the mounting cylinder.

2. The roundness detecting device for pressure pipe of hydraulic engineering according to claim 1, characterized in that, The detecting assembly comprises a reduction motor, a support body, a rotating disc and a handheld laser range finder, wherein the reduction motor is mounted at the end of the mounting cylinder through the support body, the outer end of the motor shaft is provided with the rotating disc coaxial with the mounting cylinder, and the handheld laser range finder is fixedly installed on the rotating disc, and the laser beam of the handheld laser range finder is irradiated along the radial direction of the rotating disc.

3. The roundness detecting device for pressure pipe of hydraulic engineering according to claim 2, characterized in that, The support leg is slidably mounted in a guide cylinder seat, and the guide cylinder seat is arranged at equal intervals along the circumferential direction of the disc.

4. The roundness detecting device for pressure pipe of hydraulic engineering according to claim 3, characterized in that, The axis of the support leg is perpendicular to the axis of the mounting cylinder.

5. The roundness detecting device for pressure pipe of hydraulic engineering according to claim 2, characterized in that, The measurement accuracy of the handheld laser range finder is less than or equal to ±1.0 mm.

6. The roundness detecting device for pressure pipe of hydraulic engineering according to claim 1, characterized in that, The disc is coaxial with the mounting cylinder, and the two are in an axis-perpendicular relationship.

7. The roundness detecting device for pressure pipe of hydraulic engineering according to claim 1, characterized in that, The sliding groove is a involute with a diameter gradually changing along the surface of the adjusting disc.

8. The roundness detecting device for pressure pipe of hydraulic engineering according to claim 1, characterized in that, The wheel is a nylon wheel or a rubber wheel.

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