Pressure bearing detection device and detection method

Abstract

The invention relates to a pressure bearing detection device and method, the device comprises a fixed base, and a translation mechanism, a driving mechanism and a plurality of clamping mechanisms distributed in parallel which are installed on the fixed base, each clamping mechanism comprises a synchronous transmission structure, a side plate and a plurality of clamping arms, and the clamping arms are provided with pressure sensors; a U-shaped notch is formed in the side plate, the clamping arms are distributed on the periphery of the U-shaped notch in a circular array mode, a circular clamping cavity is defined by the clamping arms, one end of the synchronous transmission structure is connected with the driving structure, the other end of the synchronous transmission structure is connected with the clamping arms, and the synchronous transmission structure is used for adjusting the defined diameter of the circular clamping cavity; the side plates are distributed in parallel and movably installed on the fixed base, and the translation mechanism is in driving connection with the side plates and used for adjusting the distance between the side plates. Compared with the prior art, the device is flexible in adjustment, wide in application range and high in clamping pressure-bearing detection efficiency; automatic operation is realized; and the pressure-bearing detection precision is high.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure detection, and in particular to a pressure detection device and a detection method. Background Art

[0002] Special equipment includes pressure pipes, which are tubular equipment used to transport gas or liquid under certain pressure. After the production of pressure pipes, they need to be pressure tested. Pressure testing can evaluate the impact resistance and durability of objects, and improve product quality and safety. There are many problems to be solved in the existing pressure equipment testing technology.

[0003] On the one hand, the detection device has poor versatility and is difficult to adapt to pressure pipes of different lengths and sizes. It cannot effectively meet the diverse pipeline detection needs, and often requires the use of different detection devices for pipes of different specifications, resulting in increased detection costs and low efficiency.

[0004] On the other hand, during the inspection process, the clamping and fixing of the pipeline is not accurate and stable enough, which is prone to uneven force, thus affecting the accuracy of the inspection data and making the performance evaluation of the pressure equipment unreliable. In addition, most of the existing devices rely on manual operation for adjustment and inspection, which is not only labor-intensive, but also difficult to avoid errors in manual operation, and it is impossible to achieve automated, high-precision inspection operations. These problems have limited the development and application of existing pressure equipment inspection technology.

[0005] For example, the utility model with publication number CN221465134U discloses a pressure detection device for a special equipment pressure pipeline, comprising a horizontally arranged base plate, two support columns distributed left and right are arranged on the top of the base plate, a slide plate is arranged between the two support columns, and a sliding component for driving the slide plate to slide up and down is arranged on the support column; an upper clamping plate and a lower clamping plate for clamping the pressure pipeline are arranged between the slide plate and the base plate; the upper clamping plate is detachably locked to the slide plate by a first locking component; the lower clamping plate is detachably locked to the base plate by a second locking component; a detection component for performing pressure detection on the pressure pipeline is arranged between the support columns.

[0006] However, the above-mentioned prior art is based on a detachable clamping plate structure to adapt to the clamping of pressure pipes of different sizes. The structure is cumbersome to operate and the manual assembly and disassembly process reduces the detection efficiency. The clamping stability of the double clamping plate on the pipe is poor. It only clamps part of the pipe and performs a local pressure test. The detection process is cumbersome and inefficient. The pipe is subjected to uneven force by applying pressure to the flat pressure plate, and the independent clamping mechanism interferes with the pressure on the pressure plate, affecting the pressure detection accuracy of the pipe. Summary of the invention

[0007] The purpose of the present invention is to provide a pressure detection device and a detection method to overcome the defects of the above-mentioned prior art that the pipeline pressure detection efficiency is low by replacing the removable splint to adapt to pipelines of different sizes, and the errors in manual operation are difficult to avoid, and automated and high-precision detection operations cannot be achieved.

[0008] The purpose of the present invention can be achieved by the following technical solutions:

[0009] The present invention provides a pressure detection device, comprising a fixed base, a translation mechanism, a driving mechanism and a plurality of parallelly distributed clamping mechanisms installed on the fixed base, wherein the clamping mechanism comprises a synchronous transmission structure, a side plate and a plurality of clamping arms, and a pressure sensor is provided on the clamping arm;

[0010] The side plate is provided with a U-shaped notch, and the clamping arms are distributed in a circular array around the U-shaped notch to enclose a circular clamping cavity. One end of the synchronous transmission structure is connected to the driving structure, and the other end is respectively connected to the clamping arms. The synchronous transmission structure is used to adjust the enclosed diameter of the circular clamping cavity; the side plates are distributed parallel to each other and are movably installed on a fixed base. The translation mechanism drives the connected side plates to adjust the spacing between the side plates.

[0011] Preferably, the translation mechanism comprises a first motor, a roller shaft, a drum and a positioning pin shaft, the roller shaft is rotatably mounted on a fixed base, the first motor is mounted on the fixed base and drives the connected roller shaft, and the drum is coaxially fixed on the roller shaft;

[0012] The roller is provided with symmetrical spiral grooves that diverge from the center to both sides, and the end of the side plate close to the fixed base is provided with a circular through hole that matches the roller; the side plate is sleeved on the roller through the circular through hole, one end of the positioning pin shaft is fixed on the side wall of the circular through hole, and the other end can be slidably installed in the spiral groove.

[0013] Preferably, the translation mechanism also includes a fixed slide bar, both ends of which are respectively mounted on a fixed base, the fixed slide bar is parallel to the roller axis, and a guide hole matching the fixed slide bar is provided on the side plate, and the fixed slide bar can move through the guide hole.

[0014] Preferably, the clamping arm comprises a plurality of I-shaped slide rails, a U-shaped slide plate and an arc-shaped clamping plate;

[0015] The circular clamping cavity is formed by enclosing an arc-shaped clamping plate of a plurality of clamping arms, and the arc-shaped clamping plate is fixed on a U-shaped slide plate. The I-shaped slide rail is fixed on one side of the side plate and is distributed radially along the circular clamping cavity. The U-shaped slide plate can be slidably clamped on the I-shaped slide rail, and the synchronous transmission structure can be rotatably connected to the U-shaped slide plate, and the U-shaped slide plate of one of the clamping arms is connected to the driving mechanism.

[0016] Preferably, the synchronous transmission structure comprises a U-shaped bracket and a plurality of articulated connecting rods;

[0017] A semicircular snap ring is fixed on one side of the side plate, and the semicircular snap ring is coaxially arranged with the bottom end profile of the U-shaped notch. A circular arc groove matching with the U-shaped bracket is arranged on the side of the semicircular snap ring away from the U-shaped notch, and the U-shaped bracket can be rotatably clamped in the circular arc groove;

[0018] The U-shaped slide plate has a second ear seat at one end close to the arc-shaped clamping plate, the U-shaped bracket has a plurality of evenly distributed first ear seats, one end of the hinged connecting rod is hinged to the first ear seat, and the other end is hinged to the second ear seat.

[0019] Preferably, the clamping arm also includes an L-shaped connecting plate, one end of the L-shaped connecting plate is vertically connected to the outer side of the arc-shaped clamping plate, and the other end is vertically connected to the side of the U-shaped slide plate away from the I-shaped slide rail; a sensor slot is provided on the side of the arc-shaped clamping plate close to the circular clamping cavity, and the pressure sensor is installed in the sensor slot.

[0020] Preferably, the driving mechanism comprises a plurality of driving units, wherein the driving unit comprises a second motor, a driving shaft, a fixed sleeve, a fixed gear and a notched gear;

[0021] The second motor is mounted on a fixed base, both ends of the driving shaft are rotatably fixed on the fixed base, the fixed sleeve is slidably mounted on the driving shaft, a circular rotating hole matching the fixed sleeve is provided on the side plate, the fixed sleeve is rotatably fixed in the circular rotating hole, and the fixed gear is mounted on one end of the fixed sleeve;

[0022] The notched gear is rotatably mounted on the side plate and meshes with the fixed gear. The side of the notched gear away from the fixed gear is a notched section. The notched section is provided with a limiting swing arm along the radial direction of the notched gear. An elliptical pin hole is provided at one end of the limiting swing arm away from the notched gear.

[0023] The end of the U-shaped slide away from the arc clamping plate is provided with an extended ear seat, and the end of the extended ear seat away from the U-shaped slide is provided with a limit pin shaft perpendicular to the extended ear seat, and the limit pin shaft is installed in the elliptical pin hole. The limit swing arm swings and drives the U-shaped slide of a clamping arm to move horizontally, and then cooperates with the synchronous transmission structure to drive the clamping arms around the U-shaped notch to move synchronously along the radial direction of the circular clamping cavity.

[0024] Preferably, the driving unit, the synchronous transmission structure and at least three clamping arms constitute a clamping unit, two clamping units are symmetrically distributed on both sides of the side plate, and the driving units of the two clamping units are synchronously connected.

[0025] Preferably, the fixed base includes a bottom plate and a trapezoidal plate, the trapezoidal plate includes a first support plate and a second support plate, the first support plate and the second support plate are vertically fixed at both ends of the bottom plate, and the translation mechanism, the driving mechanism and the clamping mechanism are all located between the first support plate and the second support plate.

[0026] The present invention also provides a method for detecting a pressure-bearing detection device, comprising the following steps:

[0027] According to the length of the pipeline, the spacing between the clamping mechanisms is adjusted through the translation mechanism; according to the diameter of the pipeline, the clamping mechanism is driven by the driving mechanism to adjust the diameter of the circular clamping cavity to match the diameter of the pipeline, and the pipeline is placed in the U-shaped notch;

[0028] The driving mechanism drives each clamping arm to synchronously approach the pipeline through the synchronous transmission structure to clamp and fix the pipeline; the driving mechanism further drives the clamping arm to apply pressure to the pipeline, and performs pressure detection on the pipeline through the pressure sensor on the clamping arm.

[0029] Compared with the prior art, the present invention has the following advantages:

[0030] (1) This solution opens the translation mechanism to adjust the spacing between the side plates according to the length of the pipeline; and according to the diameter of the pipeline, the driving mechanism drives the clamping arm to move, adjusts the diameter of the circular clamping cavity formed by the clamping arm to match the pipeline, and clamps and supports the pipeline as a whole. The clamping arms are adjusted through the synchronous transmission structure to pressurize the pipeline, and the pressure sensor is used to monitor the pressure state of the pipeline in real time.

[0031] The spacing of the side plates is adjusted through the translation mechanism, that is, the working length of the clamping mechanism is adjusted to adapt to pipes of different lengths and ensure reliable support for the pipes. In addition, based on the circular clamping cavity formed by the clamping arms, the clamping arms can be moved synchronously through the synchronous transmission structure, and the diameter of the circular clamping cavity can be adjusted to adapt to pipes of different sizes. The synchronous transmission structure can improve the consistency of the movement of each clamping arm, improve the uniformity and consistency of the force on the pipeline, and improve the accuracy of the pipeline pressure test. Compared with manual adjustment, which is difficult to avoid errors, it can be operated automatically, reducing the complexity of manual work, and is easy to operate with high accuracy.

[0032] (2) In this scheme, a spiral groove is arranged on the roller, and a positioning pin shaft connected to the side plate is movably installed in the spiral groove. The roller cooperates with the spiral groove to drive each side plate to directional translate along the axial direction of the roller shaft, and cooperates with the fixed slide rod to assist in guiding the movement of the side plate. The translation mechanism has a simple structure, can control the directional translation of multiple side plates at the same time, has high adjustment efficiency, and has high control accuracy for the spacing between each side plate, which is beneficial to improving the degree of automation and movement accuracy of the device.

[0033] (3) In this solution, the I-shaped slide rail and the U-shaped slide plate in the clamping arm guide the movement of the arc clamp plate, ensuring that the arc clamp plate can slide smoothly, so that the arc clamp plate can accurately clamp the pipe, and improve the accuracy of the detection. In addition, an L-shaped connecting plate is set between the arc clamp plate and the U-shaped slide plate, so that the arc clamp plate can evenly apply pressure to the pipe, ensuring that the pipe is evenly stressed during the detection process, avoiding excessive local stress, and improving the accuracy and safety of the detection.

[0034] (4) In this scheme, the U-shaped bracket of the synchronous transmission structure is connected to the U-shaped slide plate through a hinged connecting rod, so that the arc-shaped clamping plates that surround a circle move synchronously and then contact the pipeline synchronously to ensure that the pipeline is evenly stressed; the gear transmission in the driving mechanism further improves the synchronization of the clamping action of each arc-shaped clamping plate, and improves the stability and reliability of the clamping mechanism; in addition, the limit swing arm and the limit pin shaft and other structures cooperate to improve the sliding accuracy of the U-shaped slide plate, and the arc-shaped clamping plate can accurately clamp the pipeline. The driving mechanism, synchronous transmission structure and clamping mechanism work together to reduce the action error during the clamping and pressure application of the pipeline, and improve the accuracy and reliability of the pipeline pressure test results.

[0035] (5) This scheme installs the pressure sensor on the inner arc surface of the arc clamp, which can monitor the pressure state of the pipeline in real time after the arc clamp contacts the pipeline, improve the accuracy and reliability of the detection data, provide strong data support for the evaluation of the pipeline pressure bearing performance, and help to more scientifically judge the pressure bearing capacity of the pipeline. The pressure bearing detection device of this scheme can also be applied to the detection of similar cylindrical pressure bearing equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0037] Figure 2 It is an exploded schematic diagram of the overall structure of the present invention;

[0038] Figure 3 It is a structural schematic diagram of the translation mechanism of the present invention;

[0039] Figure 4 It is a schematic diagram of the structure of the side plate and several L-shaped connecting plates of the present invention;

[0040] Figure 5 It is an exploded schematic diagram of the side plate and a plurality of L-shaped connecting plate structures of the present invention;

[0041] Figure 6 It is an exploded schematic diagram of the U-shaped bracket and several L-shaped connecting plate structures of the present invention;

[0042] Serial numbers in the figure: 1. bottom plate; 2. trapezoidal plate; 3. first motor; 4. roller; 5. roller; 6. spiral groove; 7. positioning pin; 8. fixed slide rod; 9. second motor; 10. driving shaft; 11. fixed drum; 12. fixed gear; 13. pipeline; 14. side plate; 15. U-shaped notch; 16. circular through hole; 17. circular rotating hole; 18. I-shaped slide rail; 19. linkage shaft; 20. notched gear; 21. limit swing arm; 22. elliptical pin hole; 23. semicircular retaining ring; 24. U-shaped bracket; 25. U-shaped slide plate; 26. hinged connecting rod; 27. L-shaped connecting plate; 28. arc-shaped clamping plate; 29. ​​extended ear seat; 30. limit pin; 31. pressure sensor. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0044] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0046] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0047] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0048] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0049] Example 1

[0050] like Figure 1 and Figure 2 As shown, this embodiment provides a pressure detection device, which is characterized by comprising a fixed base and a translation mechanism, a driving mechanism and a plurality of parallelly distributed clamping mechanisms installed on the fixed base, the clamping mechanism comprising a synchronous transmission structure, a side plate 14 and a plurality of clamping arms, and a pressure sensor is provided on the clamping arm;

[0051] A U-shaped notch 15 is provided on the side plate 14, and the clamping arms are distributed in a circular array around the U-shaped notch 15 to enclose a circular clamping cavity. One end of the synchronous transmission structure is connected to the driving structure, and the other end is respectively connected to the clamping arms. The synchronous transmission structure is used to adjust the enclosed diameter of the circular clamping cavity; the side plates 14 are distributed parallel to each other and can be movably installed on a fixed base. The translation mechanism drives the connected side plates 14 to adjust the spacing between the side plates 14.

[0052] Working principle: According to the length of the pipeline, the translation mechanism is opened to adjust the spacing between the side plates 14; and according to the diameter of the pipeline, the driving mechanism drives the clamping arm to move, and adjusts the diameter of the circular clamping cavity formed by the clamping arm to match the pipeline, so as to clamp and support the pipeline as a whole. Each clamping arm is adjusted through the synchronous transmission structure to pressurize the pipeline, and the pressure sensor is used to monitor the pressure state of the pipeline in real time.

[0053] By adjusting the spacing of the side plates 14 through the translation mechanism, the working length of the clamping mechanism is adjusted to adapt to pipes of different lengths and ensure reliable support for the pipes. In addition, based on the circular clamping cavity formed by the clamping arms, the various clamping arms can be moved synchronously through a synchronous transmission structure, and the diameter of the circular clamping cavity can be adjusted to adapt to pipes of different sizes. The synchronous transmission structure can improve the consistency of the movement of each clamping arm, improve the uniformity and consistency of the force on the pipeline, and improve the accuracy of the pipeline pressure test. Compared with the manual adjustment error that is difficult to avoid, it can be operated automatically, reducing the manual complexity, and is easy to operate with high accuracy. It can be understood that the clamping cavity formed by the clamping arm can flexibly adjust the layout of the clamping arm according to the detection requirements to adapt to the pressure detection of similar cylindrical pressure equipment.

[0054] In this embodiment, the clamping arm includes a plurality of I-shaped slide rails 18, a U-shaped slide plate 25 and an arc-shaped clamping plate 28;

[0055] The circular clamping cavity is surrounded by an arc-shaped clamping plate 28 of multiple clamping arms, and the arc-shaped clamping plate 28 is fixed on the U-shaped slide 25. The I-shaped slide rail 18 is fixed on one side of the side plate 14 and is distributed radially along the circular clamping cavity. The U-shaped slide 25 can be slidably clamped on the I-shaped slide rail 18, and the synchronous transmission structure can be rotatably connected to the U-shaped slide 25. The U-shaped slide 25 of one of the clamping arms is connected to the driving mechanism.

[0056] The I-shaped slide rail and U-shaped slide plate in the clamping arm guide the movement of the arc clamp plate, ensuring that the arc clamp plate can slide smoothly, so that the arc clamp plate can accurately clamp the pipeline and improve the accuracy of detection. In addition, an L-shaped connecting plate is set between the arc clamp plate and the U-shaped slide plate, so that the arc clamp plate can evenly apply pressure to the pipeline, ensuring that the pipeline is evenly stressed during the detection process, avoiding excessive local stress, and improving the accuracy and safety of detection.

[0057] In this embodiment, the synchronous transmission structure includes a U-shaped bracket 24 and a plurality of hinged connecting rods 26;

[0058] A semicircular snap ring 23 is fixed on one side of the side plate 14. The semicircular snap ring 23 is coaxially arranged with the bottom end profile of the U-shaped notch 15. A circular arc groove matching with the U-shaped bracket 24 is arranged on the side of the semicircular snap ring 23 away from the U-shaped notch 15. The U-shaped bracket 24 can be rotatably clamped in the circular arc groove.

[0059] A second ear seat is provided at one end of the U-shaped slide plate 25 close to the arc-shaped clamping plate 28, a plurality of evenly distributed first ear seats are provided on the U-shaped bracket 24, one end of the hinged connecting rod 26 is hinged to the first ear seat, and the other end is hinged to the second ear seat.

[0060] The clamping arm also includes an L-shaped connecting plate 27, one end of which is vertically connected to the outside of the arc-shaped clamping plate 28, and the other end is vertically connected to the side of the U-shaped slide plate 25 away from the I-shaped slide rail 18; a sensor slot is provided on the side of the arc-shaped clamping plate 28 close to the circular clamping cavity, and the pressure sensor 31 is installed in the sensor slot.

[0061] In this embodiment, Figure 3 As shown, the fixed base includes a bottom plate 1 and a trapezoidal plate 2, the trapezoidal plate 2 includes a first support plate and a second support plate, the first support plate and the second support plate are vertically fixed at both ends of the bottom plate 1, and the translation mechanism, the driving mechanism and the clamping mechanism are all located between the first support plate and the second support plate.

[0062] Specifically, Figures 1 to 6 As shown, a pair of trapezoidal plates 2 symmetrically distributed on both sides of the top surface of the base plate 1 are fixed. The base plate 1 is the basic supporting structure of the entire device. The trapezoidal plates 2 are fixed on both sides of the base plate 1 to support and fix other components. The symmetrical distribution of the trapezoidal plates 2 ensures the stability of the device and provides reliable support for subsequent sliding and rotating components.

[0063] Among them, a pair of trapezoidal plates 2 are slidably provided with a number of equally spaced side plates 14, the bottom plate 1 is connected to the side plates 14 through a translation mechanism, a U-shaped notch 15 is provided on the top of each side plate 14, and transversely penetrating pipes 13 are placed in the U-shaped notches 15, the side plates 14 are connected to the bottom plate 1 through a translation mechanism, the U-shaped notches 15 are used to place the pipes 13, and the sliding design of the side plates 14 allows the device to be adjusted according to the length of the pipes 13, ensuring that pipes 13 of different lengths can be effectively detected.

[0064] The left and right sides of the side plate 14 are respectively fixed with three I-shaped slide rails 18 distributed in a circular array around the U-shaped notch 15. A U-shaped slide plate 25 is slidably engaged in the middle of each I-shaped slide rail 18. The I-shaped slide rail 18 is fixed on the side plate 14. The U-shaped slide plate 25 slides through the I-shaped slide rail 18, driving the arc-shaped clamping plate 28 to clamp the pipe 13. The I-shaped slide rail 18 ensures the smooth sliding of the U-shaped slide plate 25, so that the arc-shaped clamping plate 28 can accurately clamp the pipe 13, thereby ensuring the accuracy of the detection.

[0065] A vertically distributed L-shaped connecting plate 27 is fixed to the outer side surface of each U-shaped sliding plate 25, and an arc-shaped clamping plate 28 is fixed to the outer end of each L-shaped connecting plate 27, and each arc-shaped clamping plate 28 is against the outer surface of the pipe 13. The L-shaped connecting plate 27 connects the U-shaped sliding plate 25 and the arc-shaped clamping plate 28, and the arc-shaped clamping plate 28 directly contacts the outer surface of the pipe 13. The design of the L-shaped connecting plate 27 enables the arc-shaped clamping plate 28 to apply pressure evenly, ensuring that the pipe 13 is evenly stressed during the detection process to avoid excessive local stress.

[0066] A sensor slot is provided in the middle of the inner arc surface of each arc-shaped clamping plate 28, and a pressure sensor 31 is installed inside each sensor slot. The detection end of each pressure sensor 31 is in contact with the outer surface of the pipeline 13. The pressure sensor 31 is installed on the inner arc surface of the arc-shaped clamping plate 28 to detect the pressure condition of the pipeline 13. The pressure sensor 31 can monitor the pressure condition of the pipeline 13 in real time to ensure the accuracy and reliability of the detection data.

[0067] Fixed sliding holes are provided on the front and rear sides of each side panel 14, and a pair of parallel fixed sliding rods 8 are fixed between the tops of a pair of trapezoidal panels 2. Each fixed sliding rod 8 slides through a number of fixed sliding holes inserted on the same side. The bottom surface of each side panel 14 is slidably connected to the top surface of the bottom plate 1. The fixed sliding rod 8 penetrates the fixed sliding holes of the side panels 14 to ensure that the side panels 14 remain stable during the sliding process. The design of the fixed sliding rod 8 enables the side panels 14 to remain parallel and stable when adjusting the spacing, thereby preventing the side panels 14 from tilting or shifting during the sliding process.

[0068] In combination with the above preferred implementation manner, this embodiment further provides a more specific detection method of a pipeline pressure detection device, comprising the following steps:

[0069] According to the length of the pipeline 13, the spacing of the side plates 14 is adjusted: under the driving action of the first motor 3, the motor shaft of the first motor 3 drives the roller shaft 4 and the roller 5 to rotate synchronously, and the positioning pins 7 and the spiral grooves 6 form a limiting effect, driving the side plates 14 to be evenly distributed along a pair of fixed sliding rods 8 to both sides, and driving the fixed rotating drum 11 to slide along the driving shaft 10;

[0070] According to the size of the pipe 13, the clamping spacing of the arc-shaped clamping plates 28 is adjusted: the pipe 13 is placed horizontally in the U-shaped notches 15, and under the driving action of the second motor 9, the motor shaft of the second motor 9 drives the driving shaft 10 and the fixed drums 11 to rotate synchronously, and the fixed drum 11 drives the fixed gear 12 to rotate, and the fixed gear 12 engages to drive the notched gear 20 and the limit swing arm 21 to rotate in the opposite direction along the linkage shaft 19;

[0071] Under the limiting action of the limiting pin 30 and the elliptical pin hole 22, the extended ear seat 29 and the corresponding U-shaped slide plate 25 are driven to slide along the I-shaped slide rail 18, and under the hinged action of the hinged connecting rod 26 and the U-shaped bracket 24, the U-shaped bracket 24 is driven to rotate along the semicircular clamping ring 23, and the remaining U-shaped slide plates 25 are driven to slide along the I-shaped slide rail 18 simultaneously;

[0072] The U-shaped slide plate 25 drives the L-shaped connecting plate 27 and the arc-shaped clamping plate 28 to move synchronously, and drives a plurality of arc-shaped clamping plates 28 to press against the outer surface of the pipe 13. At the same time, the detection end of the pressure sensor 31 also contacts the outer surface of the pipe 13. With the continuous rotation of the second motor 9, the arc-shaped clamping plate 28 is further pressed against the outer surface of the pipe 13, and the pressure sensor 31 is used to perform pressure detection on the pipe 13.

[0073] The present invention realizes automated pressure bearing detection of the pipeline 13 through multiple precise structural designs. The various structural parts work together to ensure the stability and accuracy of the detection process; the adjustable design of the device enables it to adapt to pipelines 13 of different lengths and sizes, thereby improving the flexibility and scope of application of the detection; the introduction of the pressure sensor 31 makes the detection data more reliable, providing strong support for the pressure bearing performance evaluation of the pipeline 13.

[0074] Example 2

[0075] This embodiment is basically the same as the embodiment 1, and the different technical features are as follows: Figure 3 As shown, the translation mechanism includes a first motor 3, a roller shaft 4, a drum 5 and a positioning pin shaft 7. The roller shaft 4 is rotatably mounted on a fixed base. The first motor 3 is mounted on the fixed base and drives the roller shaft 4. The drum 5 is coaxially fixed on the roller shaft 4.

[0076] The drum 5 is provided with symmetrical spiral grooves 6 that diverge from the center to both sides, and the end of the side plate 4 close to the fixed base is provided with a circular through hole 16 that matches the drum 5; the side plate 14 is sleeved on the drum 5 through the circular through hole 16, one end of the positioning pin shaft 7 is fixed on the side wall of the circular through hole 16, and the other end can be slidably installed in the spiral groove 6.

[0077] In a preferred embodiment, the translation mechanism also includes a fixed slide bar 8, both ends of which are respectively mounted on a fixed base, the fixed slide bar 8 is parallel to the roller shaft 4, and a guide hole matching the fixed slide bar 8 is provided on the side plate 14, and the fixed slide bar 8 can move through the guide hole.

[0078] In this embodiment, two fixed slide bars 8 are installed on the fixed base, and the fixed slide bars 8 are symmetrically arranged at the two ends of the side plate 14, which can synchronously guide the two ends of the side plate 14, improve the accuracy of the translation of the side plate, and make the circular clamping cavity on the side plate 14 coaxially arranged with the pipe 13 before and after the side plate moves.

[0079] A spiral groove is arranged on the roller, and a positioning pin shaft connected to the side plate is movably installed in the spiral groove. The roller cooperates with the spiral groove to drive each side plate to directional translate along the axial direction of the roller shaft, and cooperates with the fixed slide bar to assist in guiding the movement of the side plate. The translation mechanism has a simple structure, can control the directional translation of multiple side plates at the same time, has high adjustment efficiency, and has high control accuracy for the spacing between each side plate, which is beneficial to improving the automation degree and movement accuracy of the device.

[0080] Specifically, Figure 1 and Figure 3 As shown, a roller shaft 4 is rotatably inserted between the bottoms of a pair of trapezoidal plates 2, a roller 5 is concentrically fixedly sleeved in the middle of the roller shaft 4, and a plurality of spiral grooves 6 diverging from the middle to both sides are opened on the outer surface of the roller 5. The roller shaft 4 and the roller 5 cooperate with the positioning pin shaft 7 through the spiral groove 6 to drive the side plate 14 to slide at equal intervals. The design of the spiral groove 6 enables the side plate 14 to automatically adjust the spacing according to the length of the pipeline 13, which is easy to operate and has high precision; a first motor 3 is installed at the bottom of the outer side surface of the trapezoidal plate 2 on the right side, and the motor shaft end of the first motor 3 is fixedly connected to the right end of the roller shaft 4;

[0081] The translation mechanism includes a plurality of positioning pins 7. A circular through hole 16 is opened at the bottom rear corner of each side panel 14. The rollers 5 are inserted into the plurality of circular through holes 16 in sequence. A positioning pin 7 is fixed to the top wall of each circular through hole 16. The bottom end of each positioning pin 7 is slidably inserted into the corresponding spiral groove 6. The positioning pin 7 cooperates with the spiral groove 6 to drive the side panel 14 to slide along the fixed slide rod 8. The design of the translation mechanism makes the spacing adjustment of the side panels 14 more precise and automated, reducing the error of manual operation.

[0082] In a preferred embodiment, a second ear seat is fixedly provided on each U-shaped slide plate 25, and a pair of semicircular clamping rings 23 symmetrically distributed on both sides of the U-shaped notch 15 are fixedly provided, and a U-shaped bracket 24 is rotatably engaged on the outer surface of each semicircular clamping ring 23, and a first ear seat is fixedly provided at both ends and the middle part of each U-shaped bracket 24, and the outer ends of the adjacent first ear seats and the outer ends of the second ear seats are respectively movably hinged to the two ends of the same hinged connecting rod 26, and the U-shaped bracket 24 is connected to the U-shaped slide plate 25 via the hinged connecting rod 26 to ensure the synchronous movement of multiple arc-shaped clamping plates 28, and the design of the hinged connecting rod 26 enables the multiple arc-shaped clamping plates 28 to clamp the pipe 13 synchronously, ensuring that the pipe 13 is subjected to uniform force during the detection process.

[0083] Example 3

[0084] This embodiment is basically the same as the embodiment 1, and the difference lies in the following technical features: Figure 3 and Figure 5As shown, the driving mechanism includes a plurality of driving units, and the driving unit includes a second motor 9, a driving shaft 10, a fixed sleeve 11, a fixed gear 12 and a notched gear 20;

[0085] The second motor 9 is mounted on a fixed base, both ends of the driving shaft 10 are rotatably fixed on the fixed base, the fixed sleeve 11 is slidably mounted on the driving shaft 10, a circular rotating hole 17 matching with the fixed sleeve 11 is provided on the side plate 14, the fixed sleeve 11 is rotatably fixed in the circular rotating hole 17, and the fixed gear 12 is mounted on one end of the fixed sleeve 11;

[0086] The notch gear 20 is rotatably mounted on the side plate 14 and meshes with the fixed gear 12. The side of the notch gear 20 away from the fixed gear 12 is a notch section. The notch section is provided with a limiting swing arm 21 along the radial direction of the notch gear 20. The end of the limiting swing arm 21 away from the notch gear 20 is provided with an elliptical pin hole 22.

[0087] An extended ear seat 29 is provided at one end of the U-shaped slide plate 25 away from the arc-shaped clamping plate 28, and a limit pin 30 perpendicular to the extended ear seat 29 is provided at one end of the extended ear seat 29 away from the U-shaped slide plate 25. The limit pin 30 is installed in the elliptical pin hole 22. The limit swing arm 21 swings and drives the U-shaped slide plate 25 of a clamping arm to move horizontally, and then cooperates with the synchronous transmission structure to drive the clamping arms around the U-shaped notch 15 to move synchronously along the radial direction of the circular clamping cavity.

[0088] The U-shaped bracket of the synchronous transmission structure is connected to the U-shaped slide plate through a hinged connecting rod, so that the arc-shaped clamping plates that surround a circle move synchronously and then contact the pipeline synchronously to ensure that the pipeline is evenly stressed; the gear transmission in the driving mechanism further improves the synchronization of the clamping action of each arc-shaped clamping plate, and improves the stability and reliability of the clamping mechanism; in addition, the limit swing arm and the limit pin shaft and other structures cooperate to improve the sliding accuracy of the U-shaped slide plate, and the arc-shaped clamping plate can accurately clamp the pipeline. The driving mechanism, synchronous transmission structure and clamping mechanism work together to reduce the action error during the clamping and pressure application of the pipeline, and improve the accuracy and reliability of the pipeline pressure test results.

[0089] In a preferred embodiment, at least one limit strip is provided on the drive shaft 10, and the limit strip is axially distributed parallel to the drive shaft 10. A limit groove matching the limit strip is provided on the inner side of the fixed sleeve 11. The limit strip can be slidably inserted in the limit groove to limit the circumferential rotation of the fixed sleeve 11. The fixed sleeve 11 is installed in the circular rotating hole 17 through a bearing.

[0090] In a preferred embodiment, a driving unit, a synchronous transmission structure and at least three clamping arms constitute a clamping unit, two clamping units are symmetrically distributed on both sides of the side plate 14, and the driving units of the two clamping units are synchronously connected.

[0091] Before use, the clamping units on both sides of the same side plate 14 are in the same state, and the diameters of the circular clamping cavities formed by the clamping arms are the same. In this way, when the two clamping units are subsequently driven separately by the synchronously connected driving units, the diameters of the circular clamping cavities of the two clamping units can be expanded or reduced synchronously, ensuring the consistency of work and the stability of clamping.

[0092] Specifically, Figures 4 to 6 As shown, a circular rotating hole 17 is provided at the bottom front corner of each side panel 14, and a fixed rotating cylinder 11 is rotatably engaged inside each circular rotating hole 17. A pair of limiting sliding grooves are provided in each fixed rotating cylinder 11, and both ends of each fixed rotating cylinder 11 are sleeved with concentrically fixed fixed gears 12. The fixed rotating cylinder 11 is meshed with the notched gear 20 through the fixed gear 12, driving the limiting swing arm 21 to rotate, and the gear transmission mechanism ensures that the clamping action of the arc-shaped clamping plate 28 is carried out synchronously, thereby improving the stability and reliability of the device.

[0093] Among them, a linkage shaft 19 is rotatably inserted at the bottom of each side plate 14 and is distributed through it. Both ends of each linkage shaft 19 are sleeved with concentric fixed notched gears 20, and each notched gear 20 is meshed and connected with the fixed gear 12 on the same side. A limiting swing arm 21 is fixed to the notched portion of each notched gear 20. The limiting swing arm 21 is connected to the U-shaped slide 25 through a limiting pin 30, driving the U-shaped slide 25 to slide along the I-shaped slide rail 18. The design of the limiting swing arm 21 makes the sliding of the U-shaped slide 25 more accurate, ensuring that the arc-shaped clamping plate 28 can accurately clamp the pipe 13.

[0094] Furthermore, an elliptical pin hole 22 is formed at the outer end of each limiting swing arm 21, an extended ear seat 29 is fixed to the bottom end of each U-shaped slide plate 25 located below, a limiting pin shaft 30 is fixed to the bottom end of each extended ear seat 29, and the outer end of each limiting pin shaft 30 is slidably engaged in the elliptical pin hole 22 on the same side.

[0095] In this embodiment, a driving shaft 10 is rotatably inserted between the bottom of a pair of trapezoidal plates 2, and a pair of limit clips are fixed on the outer surface of the driving shaft 10. The driving shaft 10 slides through and is inserted into a number of fixed rotating drums 11 in turn, and each limit clip is slidably engaged in a number of limit slide grooves on the same side. A second motor 9 is installed at the bottom of the outer side surface of the trapezoidal plate 2 on the right side, and the motor shaft end of the second motor 9 is fixedly connected to the right end of the driving shaft 10. The driving shaft 10 drives the fixed rotating drum 11 to rotate through the second motor 9, and then drives the arc clamping plate 28 to clamp the pipe 13. The design of the driving shaft 10 and the second motor 9 automates the clamping action of the arc clamping plate 28, reducing the complexity of manual operation.

[0096] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A pressure detection device, characterized in that: It comprises a fixed base, a translation mechanism installed on the fixed base, a driving mechanism and a plurality of clamping mechanisms distributed in parallel, wherein the clamping mechanism comprises a synchronous transmission structure, a side plate (14) and a plurality of clamping arms, and the clamping arms are provided with pressure sensors; The side plate (14) is provided with a U-shaped notch (15), and the clamping arms are distributed in a circular array around the U-shaped notch (15) to enclose a circular clamping cavity. One end of the synchronous transmission structure is connected to the driving structure, and the other end is respectively connected to the clamping arms. The synchronous transmission structure is used to adjust the enclosed diameter of the circular clamping cavity; the side plates (14) are distributed parallel to each other and are movably installed on a fixed base. The translation mechanism drives the connected side plates (14) to adjust the spacing between the side plates (14).

2. A pressure detection device according to claim 1, characterized in that: The translation mechanism comprises a first motor (3), a roller shaft (4), a roller (5) and a positioning pin shaft (7); the roller shaft (4) is rotatably mounted on a fixed base; the first motor (3) is mounted on the fixed base and drives the roller shaft (4); the roller (5) is coaxially fixed on the roller shaft (4); The roller (5) is provided with symmetrical spiral grooves (6) that diverge from the center to both sides, and the side plate (4) is provided with a circular through hole (16) that matches the roller (5) at one end close to the fixed base; the side plate (14) is sleeved on the roller (5) through the circular through hole (16), and one end of the positioning pin shaft (7) is fixed on the side wall of the circular through hole (16), and the other end can be slidably installed in the spiral groove (6).

3. A pressure detection device according to claim 2, characterized in that: The translation mechanism also includes a fixed slide bar (8), the two ends of which are respectively mounted on a fixed base, the fixed slide bar (8) and the roller shaft (4) are parallel to each other, and the side plate (14) is provided with a guide hole matched with the fixed slide bar (8), and the fixed slide bar (8) can move through the guide hole.

4. A pressure detection device according to claim 1, characterized in that: The clamping arm comprises a plurality of I-shaped slide rails (18), a U-shaped slide plate (25) and an arc-shaped clamping plate (28); The circular clamping cavity is formed by enclosing a plurality of arc-shaped clamping plates (28) of clamping arms, the arc-shaped clamping plates (28) are fixed on a U-shaped slide plate (25), the I-shaped slide rail (18) is fixed on one side of the side plate (14) and is distributed radially along the circular clamping cavity, the U-shaped slide plate (25) can be slidably clamped on the I-shaped slide rail (18), the synchronous transmission structure can be rotatably connected to the U-shaped slide plate (25), and the U-shaped slide plate (25) of one of the clamping arms is connected to the driving mechanism.

5. A pressure detection device according to claim 4, characterized in that: The synchronous transmission structure comprises a U-shaped bracket (24) and a plurality of hinged connecting rods (26); A semicircular snap ring (23) is fixed on one side of the side plate (14), and the semicircular snap ring (23) is coaxially arranged with the bottom end profile of the U-shaped notch (15). A circular arc groove matching with the U-shaped bracket (24) is arranged on the side of the semicircular snap ring (23) away from the U-shaped notch (15), and the U-shaped bracket (24) can be rotatably clamped in the circular arc groove; The U-shaped slide plate (25) is provided with a second ear seat at one end close to the arc-shaped clamping plate (28), the U-shaped bracket (24) is provided with a plurality of evenly distributed first ear seats, one end of the hinged connecting rod (26) is hinged to the first ear seat, and the other end is hinged to the second ear seat.

6. A pressure detection device according to claim 4, characterized in that: The clamping arm also includes an L-shaped connecting plate (27), one end of which is vertically connected to the outside of the arc-shaped clamping plate (28), and the other end of which is vertically connected to the side of the U-shaped slide plate (25) away from the I-shaped slide rail (18); a sensor slot is provided on the side of the arc-shaped clamping plate (28) close to the circular clamping cavity, and the pressure sensor (31) is installed in the sensor slot.

7. A pressure detection device according to claim 4, characterized in that: The driving mechanism comprises a plurality of driving units, wherein the driving units comprise a second motor (9), a driving shaft (10), a fixed sleeve (11), a fixed gear (12) and a notched gear (20); The second motor (9) is mounted on a fixed base, both ends of the driving shaft (10) are rotatably fixed on the fixed base, the fixed sleeve (11) is slidably mounted on the driving shaft (10), a circular rotating hole (17) matching with the fixed sleeve (11) is provided on the side plate (14), the fixed sleeve (11) is rotatably fixed in the circular rotating hole (17), and the fixed gear (12) is mounted on one end of the fixed sleeve (11); The notched gear (20) is rotatably mounted on the side plate (14) and meshes with the fixed gear (12); a side of the notched gear (20) away from the fixed gear (12) is a notched section; a limiting swing arm (21) is provided along the radial direction of the notched gear (20); an elliptical pin hole (22) is provided at one end of the limiting swing arm (21) away from the notched gear (20); An end of the U-shaped slide plate (25) away from the arc-shaped clamping plate (28) is provided with an extended ear seat (29), and an end of the extended ear seat (29) away from the U-shaped slide plate (25) is provided with a limit pin shaft (30) perpendicular to the extended ear seat (29), and the limit pin shaft (30) is installed in the elliptical pin hole (22). The limit swing arm (21) swings and drives the U-shaped slide plate (25) of a clamping arm to move horizontally, and then cooperates with the synchronous transmission structure to drive the clamping arms around the U-shaped notch (15) to move synchronously along the radial direction of the circular clamping cavity.

8. A pressure detection device according to claim 7, characterized in that: The driving unit, the synchronous transmission structure and at least three clamping arms constitute a clamping unit, two clamping units are symmetrically distributed on both sides of the side plate (14), and the driving units of the two clamping units are synchronously connected.

9. A pressure detection device according to claim 1, characterized in that: The fixed base comprises a bottom plate (1) and a trapezoidal plate (2), the trapezoidal plate (2) comprises a first support plate and a second support plate, the first support plate and the second support plate are vertically fixed at two ends of the bottom plate (1), and the translation mechanism, the driving mechanism and the clamping mechanism are all located between the first support plate and the second support plate.

10. A detection method based on a pressure detection device according to any one of claims 1 to 9, characterized in that: The following steps are involved: According to the length of the pipe (13), the spacing between the clamping mechanisms is adjusted by a translation mechanism; according to the diameter of the pipe (13), the clamping mechanism is driven by a driving mechanism to adjust the diameter of the circular clamping cavity to match the diameter of the pipe (13), and the pipe (13) is placed in the U-shaped notch (15); The driving mechanism drives each clamping arm to synchronously approach the pipeline (13) through a synchronous transmission structure to clamp and fix the pipeline (13); the driving mechanism further drives the clamping arm to apply pressure to the pipeline (13), and performs pressure detection on the pipeline (13) through a pressure sensor (31) on the clamping arm.

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