Device and method for measuring size of pipe orifice

Abstract

The invention provides a device and method for measuring the size of a pipe orifice, and relates to the technical field of pipe orifice measurement, and the device comprises a connecting rail, a pi ruler fixing arm disposed at one end of the connecting rail, and a driving mechanism disposed at the other end of the connecting rail. The pi ruler fixing arm comprises a pi ruler fixing wheel; the driving mechanism comprises a driving wheel assembly in sliding connection with the connecting rail and a control rod fixedly connected with the connecting rail. The pipe orifice size measuring device can replace manual pulling of a pi ruler, the risk that personnel fall from a high position in the traditional steel bell and spigot series pipe measuring process is solved, taking a pipe with the caliber of 3.6 m as an example, the measuring time of the device is about 2 minutes per section, the measuring time of manual measuring is 7 minutes per section, and the measuring efficiency is improved; and the blank of the domestic steel bell-and-spigot series pipes on the automation of pipe orifice size measurement is filled.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipe mouth measurement, in particular to a pipe mouth size measuring device and a measuring method. BACKGROUND

[0002] After the production of steel socket series pipe, the pipe mouth size is measured. Due to the large diameter of the pipe, the pipe mouth size of the steel socket series pipe is measured manually. The π scale is pulled around the steel socket ring by hand, and the size is read after the π scale is fixed on the steel ring by a magnet. For steel socket series pipe with a diameter of 1.8 meters or less, the traditional size measurement is completed by one person standing on the ground and using a π scale. The measurement efficiency is about 1-2 minutes per section. For steel socket series pipe with a diameter of 1.8 meters to 2.4 meters, the size measurement needs to be completed by one person standing on a platform outside the pipe. The measurement behavior has a high risk of falling from a height, and the measurement efficiency is about 3-5 minutes per section. For steel socket series pipe with a diameter of 2.6 meters to 4.0 meters, at least two people use a scaffold to assist in size measurement, and the measurement success rate is low. The measurement behavior has a high risk of falling from a height, and the measurement efficiency is about 5-10 minutes per section. At present, the diameter of the produced pipe is mostly DN1200-DN4000 (diameter 1.2 meters-4 meters), among which DN2600 and above pipes are mostly used. Manual measurement requires two people to measure at a high place. Especially in the southern region from April to October, the temperature and humidity are high, and long-term high-temperature and high-intensity work is prone to heatstroke in outdoor workers, and the safety of long-term high-altitude workers cannot be guaranteed. The actual height of the 3.6-meter-diameter pipe is about 4.2 meters, and the personnel in the measurement process have a high risk of falling from a height, and the manual measurement efficiency is low, and the manual input is large.

[0003] Therefore, the present application is proposed. SUMMARY

[0004] One of the purposes of the present application is to provide a pipe mouth size measuring device to solve the technical problem of the lack of automatic measurement device for steel socket series pipe (PCCP) mouth size in the prior art.

[0005] The second purpose of the present application is to provide a pipe mouth size measuring method.

[0006] In order to achieve the above-mentioned purpose of the present application, the following technical solutions are adopted: In a first aspect, a pipe mouth size measuring device includes a connecting rail, a π scale fixing arm arranged at one end of the connecting rail, and a driving mechanism arranged at the other end of the connecting rail. The pi ruler fixing arm comprises a pi ruler fixing wheel for pressing the pi ruler on the pipe opening. The driving mechanism comprises a driving wheel assembly in sliding connection with the connecting rail and a control rod in fixed connection with the connecting rail, and the control rod is used for adjusting the vertical distance between the driving wheel assembly and the pi ruler fixing arm.

[0007] Further, the pi ruler fixing wheel is circumferentially provided with a groove, and the width of the groove matches the width of the pi ruler.

[0008] Further, the pi ruler fixing arm further comprises an auxiliary wheel arranged at one end of the pi ruler fixing arm away from the connecting rail.

[0009] Further, when the pi ruler fixing wheel is pressed on the pi ruler, the difference between the radius of the auxiliary wheel and the vertical distance from the axis of the pi ruler fixing wheel to the outer wall of the pipe opening is 5mm±1mm.

[0010] Further, the driving wheel assembly comprises an assembly plate, a wheel arranged on one side of the assembly plate, and a power device, and the assembly plate is in sliding connection with the connecting rail through a sliding arm.

[0011] Further, the fixed end of the control rod is connected with the connecting rail, and the moving end of the control rod is in contact connection with the assembly plate.

[0012] Further, the power device comprises a motor and a power source.

[0013] Further, the driving wheel assembly further comprises a power control unit, and the power control unit is in electrical connection with the power device.

[0014] Further, the control rod comprises a compression spring sleeved on the outside of the control rod and an adjusting nut in threaded connection with the control rod, and the compression spring is in contact connection with the assembly plate.

[0015] In the second aspect, the present application provides a measuring method based on the pipe opening size measuring device, which comprises the following steps: pressing the pi ruler on the outside of the pipe opening by the pi ruler fixing wheel, pushing the driving wheel assembly to tightly adhere to the inside of the pipe opening by the control rod, opening the driving wheel assembly to drive the pi ruler fixing wheel to move gradually to pull the pi ruler around the pipe opening to read data, and completing the size measurement.

[0016] This invention provides a pipe end size measuring device. By adjusting the vertical distance between the drive wheel assembly and the π-meter fixing arm via a control lever, the π-meter fixing wheel on the π-meter fixing arm presses against the π-meter, simultaneously increasing the friction between the wheel and the inner wall of the pipe to ensure the drive device moves at the pipe end. At this time, the drive wheel assembly starts, driving the π-meter fixing wheel on the π-meter fixing arm along the π-meter pulling direction via the connecting rail, pulling the π-meter around the pipe end for measurement. This pipe end size measuring device can replace manual π-meter pulling, eliminating the risk of personnel falling from heights during traditional steel socket pipe measurement. Taking a 3.6-meter diameter pipe as an example, the measurement time using the device provided by this invention is approximately 2 minutes per section, compared to 7 minutes per section for manual measurement, thus improving measurement efficiency. This fills the gap in automated pipe end size measurement for domestic steel socket pipes (PCCP). Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Fig. 1 This is a side view of a pipe end size measuring device provided in Embodiment 1 of the present invention; Fig. 2 This is a three-dimensional structural schematic diagram of a pipe end size measuring device provided in Embodiment 1 of the present invention; Fig. 3 This is a top view of a pipe end size measuring device provided in Embodiment 1 of the present invention.

[0019] Icons: 1-Connecting rail; 2-π-foot fixed arm; 21-π-foot fixed wheel; 22-Groove; 23-Auxiliary wheel; 3-Drive mechanism; 31-Drive wheel assembly; 32-Control lever; 33-Sliding arm; 311-Assembly plate; 312-Wheel; 313-Power unit; 314-Power control unit. Detailed Implementation

[0020] Unless otherwise defined herein, the scientific and technical terms used in conjunction with this invention shall have the meanings commonly understood by one of ordinary skill in the art. The meaning and scope of terms shall be clear; however, in any case of potential ambiguity, the definitions provided herein shall prevail over any dictionary or foreign definitions. In this application, unless otherwise stated, the use of "or" means "and / or". Furthermore, the use of the term "comprising" and other forms is non-limiting.

[0021] The technical solutions of the present application will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0022] In one aspect of the present application, a pipe mouth size measuring device is provided, which comprises a connecting rail 1, a π ruler fixed arm 2 arranged at one end of the connecting rail 1, and a driving mechanism 3 arranged at the other end of the connecting rail 1. The π ruler fixed arm 2 comprises a π ruler fixed wheel 21, which is used to press the π ruler against the pipe mouth. The driving mechanism 3 comprises a driving wheel assembly 31 in sliding connection with the connecting rail 1 and a control rod 32 in fixed connection with the connecting rail 1, and the control rod 32 is used to adjust the vertical distance between the driving wheel assembly 31 and the π ruler fixed arm 2.

[0023] By adjusting the vertical distance between the driving wheel assembly 31 and the π ruler fixed arm 2 through the control rod 32, the π ruler fixed wheel 21 on the π ruler fixed arm 2 is pressed against the π ruler, and the friction between the wheels and the inner wall of the pipe is also strengthened, so as to ensure that the driving device moves along the pipe mouth. At this time, the driving wheel assembly 31 is started to drive the π ruler fixed wheel 21 on the π ruler fixed arm 2 to move along the π ruler in the setting direction, so that the π ruler is set along the pipe mouth to make one circle for measurement. The pipe mouth size measuring device can replace manual π ruler setting, and solves the risk of personnel falling from a high place in the traditional steel socket series pipe measuring process. Taking a pipe with a caliber of 3.6 meters as an example, the measuring time using the device provided by the present application is about 2 minutes per section, and the manual measuring time is 7 minutes per section, which improves the measuring efficiency and fills the gap in the automation of pipe mouth size measurement of domestic steel socket series pipes (PCCP).

[0024] In some specific embodiments, the π ruler fixed wheel 21 is provided with a groove 22 in the circumferential direction, and the width of the groove 22 matches the width of the π ruler.

[0025] In some specific embodiments, the π ruler fixed arm 2 further comprises an auxiliary wheel 23 arranged at one end of the π ruler fixed arm 2 away from the connecting rail 1. The auxiliary wheel 23 is arranged as a force receiving point, which is stressed at the center position of the whole machine, balances the stress of the four wheels, ensures that the friction forces of the wheels of the driving device are the same, prevents deviation or derailment during walking, and improves the stability of operation.

[0026] In some specific embodiments, the radius of the auxiliary wheel 23 is 5mm±1mm less than the vertical distance from the axis of the π scale fixing wheel 21 to the outer wall of the pipe opening. This ensures that the auxiliary wheel 23 always moves close to the outer wall of the pipe opening during operation, avoiding disengagement and position deviation when the π scale fixing wheel 21 is pulled and set in motion.

[0027] In some specific embodiments, the drive wheel assembly 31 includes an assembly plate 311, a wheel 312 arranged on one side of the assembly plate 311, and a power device 313. The assembly plate 311 is slidably connected to the connecting rail 1 through the sliding arm 33. When the control rod 32 pushes the assembly plate 311 to move, the sliding arm 33 can slide along the connecting rail 1. The sliding arm 33, the connecting rail 1, and the π scale fixing arm 2 form a C-shaped structure, which allows the π scale fixing wheel 21 and the wheel 312 to be respectively attached to the two sides of the pipe opening, completing the π scale pulling and setting work.

[0028] In some specific embodiments, the fixed end of the control rod 32 is connected to the connecting rail 1, and the moving end of the control rod 32 is in contact with the assembly plate 311.

[0029] In some specific embodiments, the control rod 32 includes a pressure spring wrapped around the control rod and an adjusting nut threaded with the control rod 32, and the pressure spring is connected to the assembly plate 311.

[0030] Specifically, the control rod can be an AD hydraulic AC damper buffer (e.g., model: AD2530-5).

[0031] In some specific embodiments, the power device 313 includes a motor and a power source.

[0032] Specifically, the motor can be a turbine worm motor (e.g., model: DC12V; 80rpm; double output shaft 156mm), and the power source can be a 18650 lithium battery pack.

[0033] In some specific embodiments, the drive wheel assembly 31 further includes a power control unit 314, which is electrically connected to the power device 313. The power device is controlled to be turned on through the power control unit 314.

[0034] In some embodiments, the power control unit 314 can also be provided with a signal unit for emitting and receiving signals to connect with a remote control device, facilitating remote control of the device to be turned on and further improving measurement efficiency.

[0035] Specifically, the signal unit includes a receiving end, and the remote control device includes a transmitting end corresponding to the receiving end (e.g., model: two-way module + 500m remote control (three keys)), realizing remote control.

[0036] In some specific embodiments, a damper can also be provided to increase the friction of the wheel.

[0037] According to another aspect of the present application, a measuring method based on the pipe mouth size measuring device is also provided, which comprises fixing the π ruler by the π ruler fixing wheel 21, pushing the driving wheel assembly 31 to adhere to the inner side of the pipe mouth by the control rod 32, opening the driving wheel assembly 31 to drive the π ruler fixing wheel 21 to move gradually to pull the π ruler around the pipe mouth to read the data, and completing the size measurement.

[0038] The pipe mouth size measuring device realizes automatic measurement of the pipe mouth size, and compared with the traditional manual measurement, changes the personnel climbing measurement into ground remote control measurement, and eliminates the risk of falling from a high place for the operating personnel from the root.

[0039] The application will be further described by examples. Unless otherwise specified, the materials in the examples are prepared according to the existing methods, or directly purchased from the market.

[0040] Example 1 In combination Figs. 1-3 A pipe mouth size measuring device is described, which comprises a connecting rail 1, a π ruler fixing arm 2 arranged at one end of the connecting rail 1, and a driving mechanism 3 arranged at the other end of the connecting rail 1. The π ruler fixing arm 2 comprises a π ruler fixing wheel 21 and an auxiliary wheel 23. The circumferential direction of the π ruler fixing wheel 21 is provided with a groove 22, and the width of the groove 22 matches the width of the π ruler. The auxiliary wheel 23 is arranged at the end of the π ruler fixing arm 2 away from the connecting rail 1. When the π ruler fixing wheel 21 is pressed on the π ruler, the radius of the auxiliary wheel 23 is equal to the vertical distance from the axis of the π ruler fixing wheel 21 to the outer wall of the pipe mouth.

[0041] The driving mechanism 3 comprises a driving wheel assembly 31 slidably connected with the connecting rail 1 and a control rod 32 fixedly connected with the connecting rail 1. The driving wheel assembly 31 comprises an assembling plate 311, a wheel 312 arranged on one side of the assembling plate 311, a power device 313 and a power control unit 314, and the assembling plate 311 is slidably connected with the connecting rail 1 through a sliding arm 33. The fixed end of the control rod 32 is connected with the connecting rail 1, and the moving end of the control rod 32 is connected with the assembling plate 311. In the embodiment, the control rod 32 comprises a pressure spring sleeved on the control rod and an adjusting nut threadedly connected with the control rod 32, and the pressure spring is connected with the assembling plate 311, and specifically, an AD hydraulic AC damper buffer (such as model: AD2530-5) is selected. In the embodiment, the power device 313 comprises a motor and a power supply, and specifically, a turbine worm motor (model: DC12V; 80 revolutions / minute; double output shaft 156mm) is selected as the motor, and the power supply has a battery capacity of 10000 milliampere, and can complete a measurement task for 1 day of normal work. The power control unit 314 is electrically connected with the power device 313. The power control unit 314 is further provided with a signal unit, and in the embodiment, the signal unit and the remote control device are a two-way module + 500-meter remote controller (three keys), and remote control is realized.

[0042] Embodiment 2 A pipe opening size measurement method is provided, and the pipe opening size measurement method is taken as an example to measure a pipe with a caliber of 3.6 meters, and the following steps are specifically performed: The π ruler is pressed on the outside of the pipe opening by using the π ruler fixing wheel 21, the wheel 312 is pushed to tightly adhere to the inside of the pipe opening by using the control rod 32 to push the driving wheel assembly 31, the wheel 312 is driven to roll by using the power control unit 314 to start the power device 313, the π ruler fixing wheel 21 is driven to move by using the connecting rail 1 to gradually pull the π ruler around the pipe opening to read data, and the size measurement is completed. The timing is 2 minutes per section.

[0043] At the same time, manual measurement is performed according to the traditional method: the π ruler is tightly pulled around the steel ring on the steel socket convex platform by using hands, and the π ruler is fixed on the steel ring convex platform by using a magnet to perform size reading. The timing is 7 minutes per section.

[0044] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: the technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A pipe end size measuring device, characterized in that, It includes a connecting rail (1), a π ruler fixing arm (2) set at one end of the connecting rail (1), and a drive mechanism (3) set at the other end of the connecting rail (1). The π ruler fixing arm (2) includes a π ruler fixing wheel (21), which is used to press the π ruler onto the pipe opening; The drive mechanism (3) includes a drive wheel assembly (31) slidably connected to the connecting rail (1) and a control rod (32) fixedly connected to the connecting rail (1). The control rod (32) is used to adjust the vertical distance between the drive wheel assembly (31) and the π ruler fixed arm (2).

2. The pipe end size measuring device according to claim 1, characterized in that, The π ruler fixing wheel (21) has a groove (22) in its circumference, and the width of the groove (22) matches the width of the π ruler.

3. The pipe end size measuring device according to claim 1, characterized in that, The π-foot fixed arm (2) also includes an auxiliary wheel (23), which is located on the π-foot fixed arm (2) at one end away from the connecting rail (1).

4. The pipe end size measuring device according to claim 3, characterized in that, When the π-ruler fixed wheel (21) is pressed against the π-ruler, the difference between the radius of the auxiliary wheel (23) and the vertical distance from the axis of the π-ruler fixed wheel (21) to the outer wall of the pipe opening is 5mm ± 1mm.

5. The pipe end size measuring device according to claim 1, characterized in that, The drive wheel assembly (31) includes an assembly plate (311), a wheel (312) disposed on one side of the assembly plate, and a power unit (313). The assembly plate (311) is slidably connected to the connecting rail (1) via a sliding arm (33).

6. The pipe end size measuring device according to claim 5, characterized in that, The fixed end of the control rod (32) is connected to the connecting rail (1), and the moving end of the control rod (32) is in contact with the assembly plate (311).

7. The pipe end size measuring device according to claim 5, characterized in that, The power unit (313) includes a motor and a power source.

8. The pipe end size measuring device according to claim 5, characterized in that, The drive wheel assembly (31) also includes a power control unit (314) which is electrically connected to the power unit (313).

9. The pipe end size measuring device according to claim 6, characterized in that, The control lever (32) includes a pressure spring fitted outside the control lever and an adjusting nut threadedly connected to the control lever (32). The pressure spring is in contact with the assembly plate (311).

10. A measurement method based on the pipe end size measuring device according to any one of claims 1 to 9, characterized in that, The process includes using a π ruler fixed wheel (21) to press the π ruler against the outside of the pipe opening, using a control rod (32) to push the drive wheel assembly (31) to fit tightly against the inside of the pipe opening, and turning on the drive wheel assembly (31) to drive the π ruler fixed wheel (21) to move through the connecting rail (1) to gradually pull the π ruler around the pipe opening to read the data and complete the size measurement.

Images