A plastic pipe strength detection device and detection method

Abstract

This application belongs to the field of plastic pipe performance testing technology, specifically relating to a plastic pipe strength testing device and method. The testing device includes a support base, a clamping mechanism, a guide tube, a velocity sensor, and a deformation detector. The support base has a support platform; the clamping mechanism is connected to the top surface of the support platform for positioning the plastic pipe; the guide tube is connected to the support base, vertically positioned above the plastic pipe held by the clamping mechanism, allowing falling rocks to impact the plastic pipe; the velocity sensor is connected to the support base and located at the exit of the guide tube to obtain the instantaneous velocity of the falling rock impacting the plastic pipe; the deformation detector is connected to the support base and located at the exit of the guide tube to detect the deformation of the plastic pipe when impacted by a falling rock. This application avoids the problem of large differences in test data from different testers in different testing scenarios, improving the accuracy of assessing the rock impact strength of plastic pipes.

Description

Technical Field

[0001] This application belongs to the field of plastic pipe performance testing technology, specifically relating to a plastic pipe strength testing device and testing method. Background Technology

[0002] Plastic pipes are widely used in municipal engineering, construction, and water conservancy projects due to their advantages such as light weight, corrosion resistance, and ease of installation. In particular, buried drainage pipes, water supply pipes, and overhead plastic pipes are susceptible to impact from falling rocks during actual use, leading to cracking and damage, affecting safety and service life. Therefore, the rockfall impact strength of plastic pipes is a key indicator for evaluating their quality and reliability.

[0003] Currently, most existing rockfall impact tests on plastic pipes use non-standard procedures, which involve manually striking the plastic pipe with a rock held in hand or by randomly dropping a rock, in order to qualitatively determine whether the pipe is easily broken.

[0004] In the process of implementing the above technical solution, the applicant discovered at least the following shortcomings in the relevant technology: Because the weight, shape, falling height, and impact location of falling rocks cannot be precisely controlled, test results are not repeatable, and test data from different testers vary greatly, affecting the accuracy of rock impact strength assessment of plastic pipes. Summary of the Invention

[0005] Based on the above-mentioned technical problems, this application provides a plastic pipe strength testing device and testing method, which aims to standardize the simulation of rockfall impact on plastic pipes to a certain extent and ensure the accuracy of rockfall impact strength assessment of plastic pipes.

[0006] This application is achieved through the following technical solution: In a first aspect, this application provides a plastic pipe strength testing device for testing the impact strength of a plastic pipe under falling rocks. The testing device includes: a support base having a support platform; a clamping mechanism connected to the top surface of the support platform for positioning the plastic pipe; a guide tube connected to the support base, the guide tube being vertically erected and located above the plastic pipe clamped by the clamping mechanism, through which falling rocks can strike the plastic pipe; a velocity sensor connected to the support base and located at the outlet of the guide tube for acquiring the instantaneous velocity of the falling rocks impacting the plastic pipe; and a deformation detector connected to the support base and located at the outlet of the guide tube for detecting the deformation of the plastic pipe when a falling rock impacts it.

[0007] In some implementations, a guide cover is provided at the bottom of the guide tube, and the guide cover is frustoconical.

[0008] In some embodiments, the top surface of the support platform is provided with a receiving groove, which is located below the guide tube. The bottom of the receiving groove is inclined, and the side wall of the receiving groove is provided with a collection port, which is located on the lower side of the bottom of the receiving groove. The support platform is also provided with a collection cavity, which communicates with the collection port, and the top of the collection cavity is provided with a pick-up and put-out opening.

[0009] In some embodiments, the bottom of the receiving groove is lined with a velvet cloth.

[0010] In some embodiments, the detection device further includes: an electromagnet connected to the support base; and a storage cylinder extending axially through the base, the storage cylinder being connected to the bottom of the electromagnet and positioned above the collection port.

[0011] In some embodiments, the detection device further includes a transfer assembly connected to the support base, the transfer assembly having a lifting portion that reciprocates vertically, the lifting portion being connected to at least one of the electromagnet and the access cylinder.

[0012] In some embodiments, the support base is provided with a second track arranged opposite to each other along a first direction, the second track having an open side in a second direction, and the first and second directions being mutually perpendicular horizontal directions; the lifting part includes: two lifting plates arranged opposite to each other along the first direction, each lifting plate having a first track inside, the first track having an open side in a second direction, and the first and second tracks on the same side being able to connect; a support plate, with both ends respectively inserted into the two lifting plates, the end of the support plate having an installation cavity, at least one of the electromagnet and the access cylinder being connected to the middle of the support plate; a drive motor connected to the support plate, the drive motor and the installation cavity being arranged one-to-one, the output shaft of the drive motor being connected to a roller, the roller protruding from the installation cavity and rollingly contacting the first and second tracks; wherein, controlling the drive motor to run, the support plate runs on the docked second and first tracks to transfer the fallen stones adsorbed by the access cylinder to the top of the guide tube.

[0013] In some embodiments, the clamping mechanism includes: two clamping seats disposed opposite each other on the top surface of the support platform, the top surface of the clamping seats having a support groove for accommodating the plastic tube; a support rod erected on the top surface of the support platform; and an electric push rod including a cylinder and a telescopic rod, the cylinder extending horizontally, the cylinder being connected to the support rod, the circumferential surface of the cylinder having a plurality of sliding grooves spaced apart, and the telescopic rod extending and retracting horizontally within the cylinder. The connecting rod assembly is configured in a one-to-one correspondence with the sliding groove. The connecting rod assembly includes a first connecting rod and a second connecting rod, each having a first end and a second end. The first end of the first connecting rod is rotatably connected to the outer circumferential surface of the cylinder, and the second end of the first connecting rod can abut against the inner wall of the plastic tube. The first end of the second connecting rod is rotatably connected to the circumferential surface of the telescopic rod, and the second end of the second connecting rod extends through the corresponding sliding groove and rotatably supports the middle part of the first connecting rod.

[0014] In some embodiments, the cylinder is rotatably connected to the support rod; at least one of the clamping seats has a rotatable drive wheel that can roll into contact with the plastic tube.

[0015] In a second aspect, this application also provides a method for testing the strength of a plastic pipe, the method comprising: providing a plastic pipe and a falling rock; positioning the provided plastic pipe on a support platform; releasing the provided falling rock, the falling rock being guided by the guide tube to impact the plastic pipe; acquiring the instantaneous velocity of the falling rock impacting the plastic pipe using a velocity sensor; detecting the deformation of the plastic pipe using a deformation detector; and evaluating the rock impact strength of the plastic pipe by combining the instantaneous velocity and the deformation.

[0016] The present application provides a plastic pipe strength testing device and testing method, which, through the setting of a guide tube, enables falling rocks to impact the plastic pipe at a stable height to conduct an impact test on the impact position of the plastic pipe, so as to standardize the simulation of falling rocks impacting the plastic pipe, and uses intelligent sensors such as velocity sensors and deformation detectors to quantify the impact strength. Moreover, the test results are repeatable, avoiding the problem of large differences in test data between different testers and different test scenarios, and improving the accuracy of rock impact strength assessment of plastic pipes. Attached Figure Description

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

[0018] Figure 1 A schematic diagram of the structure of a plastic pipe strength testing device according to one or more embodiments of this application is shown; Figure 2 It shows Figure 1 Another structural diagram from a different perspective; Figure 3 A schematic diagram of the clamping mechanism being assembled on the support platform is shown; Figure 4 A schematic diagram of the locking assembly is shown; Figure 5 A schematic diagram of the clamping base equipped with rollers is shown; Figure 6 A schematic diagram of the support base is shown; Figure 7 It shows Figure 6 A cross-sectional schematic diagram; Figure 8 A schematic diagram of the transfer assembly on the support base is shown; Figure 9 A schematic diagram of the lifting component is shown; Figure 10 It shows Figure 9 An explosion diagram.

[0019] Explanation of reference numerals in the attached figures: 10. Plastic pipes; 100. Support base; 110. Support platform; 111. Receiving groove; 112. Collection port; 113. Collection cavity; 114. Pick-up and drop-off port; 115. Protrusion; 120. Column; 130. Support frame; 140. Support rod; 141. Connecting sleeve; 150. Second track; 160. Second connecting rod; 161. Clearance groove; 200. Clamping mechanism; 210. Clamping seat; 211. Support groove; 212. Mounting groove; 220. Support rod; 230. Electric push rod; 231. Cylinder; 232. Telescopic rod; 233. Slide groove; 240. Linkage assembly; 241. First link; 242. Second link; 243. Support block; 250. Drive wheel; 260. Rotary motor; 270. First connecting rod; 300. Guide tube; 310. Guide cover; 410. Speed ​​sensor; 420. Deformation detector; 510. Electromagnet; 520. Storage cylinder; 600. Transfer assembly; 610. Lifting part; 611. Lifting plate; 612. Support plate; 613. Drive motor; 614. Roller; 615. First track; 616. Mounting cavity; 617. Assembly cavity; 618. Assembly hole; 620. Lifting components. Detailed Implementation

[0020] To enable those skilled in the art to more clearly understand this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0021] This application provides a plastic pipe strength testing device and method that can automatically and accurately simulate the impact of falling rocks on plastic pipes, ensuring the accuracy of the rock impact strength assessment of plastic pipes. The specific details of the testing device and method are now described in conjunction with the accompanying drawings.

[0022] Figure 1 A schematic diagram of the structure of a plastic pipe strength testing device according to one or more embodiments of this application is shown. Figure 2 It shows Figure 1 A structural diagram from another perspective. Combined with... Figure 1 as well as Figure 2 The plastic pipe strength testing device is used to test the impact strength of plastic pipe 10 under falling rocks. It includes a support base 100, a clamping mechanism 200, a guide tube 300, a velocity sensor 410, and a deformation detector 420. The support base 100 has a support platform 110. The clamping mechanism 200 is connected to the top surface of the support platform 110 and is used to position the plastic pipe 10. The guide tube 300 is connected to the support base 100 and is vertically erected above the plastic pipe 10 clamped by the clamping mechanism 200. Falling rocks can hit the plastic pipe 10 through the guide tube 300. The velocity sensor 410 is connected to the support base 100 and is located at the outlet of the guide tube 300 to obtain the instantaneous velocity of the falling rocks impacting the plastic pipe 10. The deformation detector is connected to the support base 100 and is located at the outlet of the guide tube 300 to detect the deformation of the plastic pipe 10 when the falling rocks impact it.

[0023] Combination Figure 1 as well as Figure 2In some embodiments, the support base 100 further includes four square-arranged columns 120, and the support platform 110 is generally square. The four corners of the support platform 110 are connected to the middle of the columns 120 to give the support platform 110 a certain height. In addition, the support base 100 also includes a support frame 130, which is also square. The four corners of the support frame 130 are connected to the top of the columns 120, and a support rod 140 is connected to the support frame 130. The top end of the guide tube 300 is connected to the middle of the support rod 140, and the bottom end extends towards the support platform 110 so that the guide tube 300 is vertically erected above the support platform 110, and thus located above the plastic tube 10 held by the clamping mechanism 200, so that falling rocks can strike the plastic tube 10 vertically through the guide tube 300.

[0024] Combination Figure 1 as well as Figure 2 In specific implementation, a vertically penetrating connecting sleeve 141 is provided in the middle of the support rod 140, and the top of the guide tube 300 can be sleeved in the connecting sleeve 141 by means of threading, welding or other methods to realize the connection and assembly of the guide tube 300 and the support rod 140.

[0025] Combination Figure 1 as well as Figure 2 In some embodiments, a guide cover 310 is provided at the bottom of the guide tube 300, and the guide cover 310 is shaped like a frustum. The reason for this arrangement is that when a rock impacts the plastic tube 10 through the guide tube 300 and the guide cover 310, the rock may splash. The frustum-shaped guide cover 310 can prevent the rock from splashing to a certain extent, so that the rock falls onto the top surface of the support platform 110 after impacting the plastic tube 10.

[0026] Figure 3 A schematic diagram of the clamping mechanism's assembly on the support platform is shown. (Combined with...) Figure 3 In some embodiments, the clamping mechanism 200 includes two clamping seats 210 disposed opposite to each other on the top surface of the support platform 110. The top surface of the clamping seat 210 is provided with a support groove 211 for accommodating the plastic tube 10. The radius of the support groove 211 is adapted to the radius of the plastic tube 10. The two ends of the plastic tube 10 are respectively placed in the support grooves 211 of the clamping seats 210 at both ends, so that the plastic tube 10 is fixedly disposed on the top surface of the support platform 110 by the clamping mechanism 200.

[0027] Figure 4 A schematic diagram of the locking assembly is shown. (Combined with...) Figure 3 as well as Figure 4In some embodiments, the clamping mechanism 200 further includes a locking assembly, which includes a support rod 220, an electric push rod 230, and a connecting rod assembly 240. The support rod 220 is erected on the top surface of the support platform 110. The electric push rod 230 includes a cylinder 231 and a telescopic rod 232. The cylinder 231 extends horizontally and is connected to the support rod 220. Multiple sliding grooves 233 are spaced apart on the circumferential surface of the cylinder 231. The telescopic rod 232 extends and retracts horizontally within the cylinder 231. The connecting rod assembly 240... Corresponding to the slide groove 233, the connecting rod assembly 240 includes a first connecting rod 241 and a second connecting rod 242, each having a first end and a second end respectively. The first end of the first connecting rod 241 is rotatably connected to the outer circumferential surface of the cylinder 231, and the second end of the first connecting rod 241 can abut against the inner wall of the plastic tube 10. The first end of the second connecting rod 242 is rotatably connected to the circumferential surface of the telescopic rod 232, and the second end of the second connecting rod 242 passes through the corresponding slide groove 233 and rotatably supports the middle part of the first connecting rod 241. Therefore, by controlling... The telescopic rod 232 of the electric actuator 230 extends and retracts, which can drive the first link 241 and the second link 242 to retract or expand the link assembly 240. When it is necessary to test the impact strength of the plastic tube 10, the telescopic rod 232 of the electric actuator 230 is first controlled to retract, and multiple link assemblies 240 are also retracted simultaneously. The plastic tube 10 to be tested is placed in the support groove 211 of the two clamping seats 210. Then, the telescopic rod 232 of the electric actuator 230 is controlled to extend, and multiple link assemblies 240 are also expanded simultaneously. The second end of the first link 241 of the linkage assembly 240 abuts against the inner wall of the plastic tube 10 so that the plastic tube 10 can be stably fixed on the support platform 110. This allows multiple falling rocks from the bottom of the guide tube 300 to act on the same part of the plastic tube 10, avoiding the phenomenon that the plastic tube 10 may deflect on the support platform 110 due to the impact of falling rocks, which would prevent multiple falling rocks from acting on the same part of the plastic tube 10. This effectively tests the strength of the plastic tube 10 to withstand multiple falling rock impacts.

[0028] Combination Figure 4 In some embodiments, a support block 243 is rotatably connected to the second end of the first connecting rod 241. The support block 243 is used to contact the inner wall of the plastic tube 10 to increase the contact area between the second end of the first connecting rod 241 and the inner wall of the plastic tube 10, thereby increasing the friction between the second end of the first connecting rod 241 and the inner wall of the plastic tube 10, so that when the falling rock impacts the plastic tube 10, it ensures that the plastic tube 10 and the support platform 110 remain relatively fixed.

[0029] Combination Figure 3In some embodiments, at least one clamping seat 210 has a built-in rotatable drive wheel 250, which can roll in contact with the plastic tube 10. After the strength test of a certain position of the plastic tube 10 is completed, the telescopic rod 232 of the electric push rod 230 can be retracted first to release the contact between the connecting rod assembly 240 and the inner wall of the plastic tube 10; then the drive wheel 250 is controlled to rotate, and after the drive wheel 250 drives the plastic tube 10 to rotate a certain angle, the other test position of the plastic tube 10 is located below the guide tube 300. At this time, the drive wheel 250 stops rotating, and the telescopic rod 232 of the electric push rod 230 is controlled to extend, so that the connecting rod assembly 240 contacts and locks the inner wall of the plastic tube 10, and the strength test of the other position of the plastic tube 10 can be performed.

[0030] Figure 5 A schematic diagram of a clamping base equipped with rollers is shown. Figure 5 In a specific implementation, one of the clamping seats 210 is provided with a mounting groove 212, which is located to the side of the support groove 211. The mounting groove 212 is open on one side facing the support groove 211. A rotary motor 260 is provided in the mounting groove 212, and a roller 614 is connected to the output shaft of the rotary motor 260 and contacts the outer wall of the plastic tube 10 placed in the support groove 211 through the opening of the mounting groove 212. In some other configurations, a rotary motor 260 and a roller 614 may also be provided in the other clamping seat 210, so that the plastic tube 10 in the support groove 211 can be driven to rotate by controlling the synchronous rotation of the two rollers 614. This application does not limit this.

[0031] Combination Figure 4 In some embodiments, the detection device further includes a U-shaped first connecting rod 270, with the first connecting rod 270 and roller 614 located on opposite sides of the plastic tube 10. Two clamping seats 210 are connected to the two ends of the first connecting rod 270. The aforementioned velocity sensor 410 and deformation detector 420 are both connected to the first connecting rod 270. Furthermore, the velocity sensor 410 can employ laser velocimetry to calculate impact energy, and the deformation detector 420 can employ a high-speed industrial CCD camera to detect the indentation and deformation of the tube after impact in real time, record the deformation recovery time, and evaluate the impact toughness of the tube. Both the velocity sensor 410 and the deformation detector can transmit data to a terminal device for real-time storage and display of test data (e.g., impact height, impact velocity, impact energy, tube deformation, test time, etc.).

[0032] Figure 6 A schematic diagram of the support base is shown. Figure 7 It shows Figure 6 A cross-sectional schematic diagram. Combined with... Figure 6 as well as Figure 7In some embodiments, the top surface of the support platform 110 is provided with a receiving groove 111, which is located below the guide pipe 300. The bottom of the receiving groove 111 is sloped, and a collection port 112 is provided on the side wall of the receiving groove 111, located on the lower side of the bottom of the receiving groove 111. The support platform 110 is also provided with a collection cavity 113, which communicates with the collection port 112. The top of the collection cavity 113 has a pick-up and drop-off port 114. After the falling stone impacts the plastic pipe 10, the falling stone falls into the receiving groove 111. Since the bottom of the receiving groove 111 is sloped, the falling stone will roll at the bottom of the receiving groove 111 and be collected in the collection cavity 113 through the collection port 112.

[0033] Combination Figure 7 In specific implementation, a protrusion 115 is provided on one side of the support platform 110 in the horizontal direction. The protrusion 115 forms a collection cavity 113 that communicates with the collection port 112. The top of the protrusion 115 is provided with the pick-up and put-out port 114. The height of the collection cavity 113 is lower than that of the collection port 112. The falling rocks from the collection port 112 can be collected in the collection cavity 113 in a row, and only one of them is directly opposite the pick-up and put-out port 114.

[0034] It should be noted that the bottom of the receiving tank 111 can be covered with a velvet cloth so that when the falling stone impacts the plastic pipe 10 and falls to the bottom of the receiving tank 111, the falling stone will not splash on the top surface of the support platform 110, thus ensuring safety during the test.

[0035] Combination Figure 2 In some embodiments, the detection device further includes an electromagnet 510 and a storage cylinder 520. The electromagnet 510 is connected to the support base 100, and the storage cylinder 520 extends axially and is connected to the bottom of the electromagnet 510. The storage cylinder 520 is located above the collection port 112. When the fallen rocks need to be reused, the electromagnet 510 is energized. The energized magnet attracts the ferrous fallen rocks from the collection port 112 into the storage cylinder 520, thereby removing the fallen rocks from the collection chamber 113.

[0036] Combination Figure 2In some embodiments, the detection device further includes a transfer assembly 600 connected to the support base 100. The transfer assembly 600 has a lifting part 610 that moves vertically reciprocating. The lifting part 610 is connected to at least one of an electromagnet 510 and a storage cylinder 520. After the electromagnet 510 attracts the falling stone from the collection port 112 into the storage cylinder 520, the transfer assembly 600 is controlled to move. The transfer assembly 600 moves the electromagnet 510 and the storage cylinder 520 to above the guide tube 300. Subsequently, the electromagnet 510 is de-energized, and the falling stone falls from the storage cylinder 520 and, guided by the guide tube 300, impacts the plastic tube 10 fixed on the support platform 110. This repetition achieves multiple impacts of the falling stone on the plastic tube 10. In addition, by controlling the movement frequency of the transfer assembly 600, different impact frequencies of the falling stone on the plastic tube 10 can be simulated, resulting in a better simulation effect.

[0037] Figure 8 A schematic diagram of the transfer assembly on the support base is shown. Figure 2 as well as Figure 8 In some embodiments, the transfer assembly 600 includes two lifting members 620 disposed opposite to each other on both sides of the protrusion 115. Both lifting members 620 are connected to the side of the support base 100. The lifting members 620 can be ball screw mechanisms, and the lifting part 610 connects the two lifting members 620. In other embodiments, the lifting members 620 can also be linear guides, linear motors, or other mechanisms with linear reciprocating movement. This application does not limit this.

[0038] Combination Figure 2 as well as Figure 8 In some embodiments, the support base 100 is provided with a second track 150 disposed opposite to it along a first direction, and one side of the second track 150 is open in a second direction. The first direction and the second direction are horizontal directions that are perpendicular to each other. Figure 9 A schematic diagram of the lifting component is shown. Figure 10 It shows Figure 9 The explosion diagram, combined with Figure 9 as well as Figure 10The lifting unit 610 includes a lifting plate 611, a support plate 612, a drive motor 613, and rollers 614. Two lifting plates 611 are arranged opposite each other along a first direction. A first track 615 is provided inside each lifting plate 611. One side of the first track 615 is open in a second direction, and the first track 615 and the second track 150 on the same side can be connected. Both ends of the support plate 612 are inserted into the two lifting plates 611, and the end of the support plate 612 is provided with a mounting cavity 616. At least one of the electromagnets 510 and the storage cylinder 520... The middle part of the support plate 612 is connected; the drive motor 613 is connected to the support plate 612, and the drive motor 613 and the mounting cavity 616 are arranged one-to-one. The output shaft of the drive motor 613 is connected to a roller 614, which protrudes from the mounting cavity 616 and rolls in contact with the first track 615 and the second track 150. The drive motor 613 is controlled to run, and the support plate 612 runs on the docked second track 150 and the first track 615 to transfer the fallen stones adsorbed by the storage cylinder 520 to the top of the guide tube 300.

[0039] Combination Figure 9 as well as Figure 10 In a specific implementation, the end of the support plate 612 is also provided with an assembly cavity 617, which is located inside the mounting cavity 616. The drive motor 613 is installed in the assembly cavity 617 to realize the installation of the drive motor 613 on the support plate 612. In addition, the middle part of the support plate 612 is provided with an assembly hole 618 for installing the electromagnet 510 or the storage cylinder 520.

[0040] Combination Figure 1 , Figure 2 as well as Figure 8 The top of the support frame 130 is connected to two U-shaped second connecting rods 160, which are spaced apart along a second direction. The two ends of each second connecting rod 160 are connected to the support frame 130. A second track 150 is connected to the inner side of the two second connecting rods 160 to allow the second track 150 to be mounted on the support frame 130. Furthermore, a clearance groove 161 is provided at the bottom of the middle section of the two second connecting rods 160, through which the electromagnet 510 can pass to ensure the smooth transfer of falling rocks.

[0041] Based on the aforementioned plastic pipe strength testing device, this application also provides a method for testing the strength of plastic pipes, the method comprising: S1: Provide plastic tube 10 and falling rocks. The specifications of the falling rocks can be set according to the strength requirements of the plastic tube 10 to be tested. However, the aperture of the falling rocks needs to be smaller than the inner diameter of the guide tube 300 to avoid friction between the falling rocks and the inner wall of the guide tube 300 when the falling rocks move inside the guide tube 300, which would affect the falling speed of the falling rocks. S2: Position the provided plastic tube 10 on the support platform 110 using the clamping assembly. For details, please refer to the relevant description above. This application will not elaborate on this. S3: Release the provided falling rocks, which are guided by the guide tube 300 to impact the plastic tube 10; there can be multiple falling rocks, and after multiple falling rocks impact the plastic tube 10, they are collected in the collection chamber 113, and the falling rocks are repeatedly impacted by the plastic tube 10 through multiple transfer components 600 to achieve a better simulation effect. S4: The instantaneous velocity of the falling rock impacting the plastic pipe 10 is obtained by the velocity sensor 410, and the deformation of the plastic pipe 10 is detected by the deformation detector. S5: Combining instantaneous velocity and deformation, evaluate the rockfall impact strength of the plastic pipe 10. Specifically: the velocity sensor 410 transmits the instantaneous velocity information of the plastic pipe 10 to the terminal. The terminal calculates the instantaneous impact energy based on the instantaneous velocity information to determine whether the impact energy of the rockfall on the plastic pipe 10 meets the requirements. The deformation of the plastic pipe 10 detected by the deformation detector is sent to the terminal. The terminal retrieves the pre-stored strength images of different levels of the plastic pipe 10 and compares them with the actual deformation of the plastic pipe 10 to evaluate the rockfall impact strength of the plastic pipe 10.

[0042] The plastic pipe strength testing device and method provided in this application, through the setting of the guide tube 300, enables falling rocks to impact the tested impact position of the plastic pipe 10 at a stable height, so as to standardize the simulation of falling rocks impacting the plastic pipe 10, and uses intelligent sensors such as velocity sensor 410 and deformation detector 420 to quantify the impact strength. Moreover, the test results are repeatable, avoiding the problem of large differences in test data under different test personnel and different test scenarios, and improving the accuracy of rock impact strength assessment of plastic pipe 10.

[0043] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0045] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0046] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified. Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A plastic pipe strength testing device for testing the impact strength of plastic pipes under falling rocks, characterized in that, The detection device includes: Support base, which has a supporting platform; A clamping mechanism, connected to the top surface of the support platform, is used to position the plastic tube; A guide tube is connected to the support base. The guide tube is vertically erected and located above the plastic tube held by the clamping mechanism. Falling rocks can strike the plastic tube through the guide tube. A speed sensor, connected to the support base and located at the outlet of the guide tube, is used to obtain the instantaneous velocity of the falling rock impacting the plastic tube. A deformation detector is connected to the support base and located at the outlet of the guide tube to detect the deformation of the plastic tube when a rock impacts it.

2. The plastic pipe strength testing device according to claim 1, characterized in that, The bottom of the guide tube is provided with a guide cover, which is shaped like a frustum.

3. The plastic pipe strength testing device according to claim 1, characterized in that, The top surface of the support platform is provided with a receiving groove, which is located below the guide tube. The bottom of the receiving groove is sloping, and the side wall of the receiving groove is provided with a collection port, which is located on the lower side of the bottom of the receiving groove. The support platform is also provided with a collection chamber, which is connected to the collection port, and the top of the collection chamber has a pick-up and drop-out port.

4. The plastic pipe strength testing device according to claim 3, characterized in that, The bottom of the receiving groove is lined with velvet.

5. The plastic pipe strength testing device according to claim 3, characterized in that, The detection device further includes: An electromagnet is connected to the support base; The access cylinder extends axially through the electromagnet and is located above the collection port.

6. The plastic pipe strength testing device according to claim 5, characterized in that, The detection device further includes: A transfer assembly connected to the support base, the transfer assembly having a lifting part that reciprocates vertically, the lifting part being connected to at least one of the electromagnet and the access cylinder.

7. The plastic pipe strength testing device according to claim 6, characterized in that, The support base is provided with a second track arranged opposite to it along a first direction, and one side of the second track is open in a second direction. The first direction and the second direction are horizontal directions that are perpendicular to each other. The lifting unit includes: Two lifting plates are arranged opposite each other along a first direction. A first track is provided inside the lifting plate. One side of the first track is open in a second direction. The first track and the second track on the same side can be connected to each other. A support plate is inserted into the two lifting plates at both ends, and an installation cavity is provided at the end of the support plate. At least one of the electromagnet and the access cylinder is connected to the middle of the support plate. A drive motor is connected to the support plate. The drive motor and the mounting cavity are arranged in a one-to-one correspondence. The output shaft of the drive motor is connected to a roller. The roller protrudes from the mounting cavity and makes rolling contact with the first track and the second track. The drive motor is controlled to operate, and the support plate moves on the docked second track and the first track to transfer the falling rocks adsorbed by the storage cylinder to the top of the guide tube.

8. A plastic pipe strength testing device according to any one of claims 1-7, characterized in that, The clamping mechanism includes: Two clamping seats are disposed opposite each other on the top surface of the support platform, and the top surface of the clamping seats is provided with a support groove for accommodating the plastic tube; A support rod is erected on the top surface of the support platform; An electric actuator includes a cylinder and a telescopic rod. The cylinder extends horizontally and is connected to the support rod. Multiple sliding grooves are spaced apart on the circumferential surface of the cylinder. The telescopic rod extends and retracts horizontally within the cylinder. The connecting rod assembly is configured in a one-to-one correspondence with the sliding groove. The connecting rod assembly includes a first connecting rod and a second connecting rod, each having a first end and a second end. The first end of the first connecting rod is rotatably connected to the outer circumferential surface of the cylinder, and the second end of the first connecting rod can abut against the inner wall of the plastic tube. The first end of the second connecting rod is rotatably connected to the circumferential surface of the telescopic rod, and the second end of the second connecting rod extends through the corresponding sliding groove and rotatably supports the middle part of the first connecting rod.

9. The plastic pipe strength testing device according to claim 8, characterized in that, The cylinder is rotatably connected to the support rod; At least one of the clamping seats has a built-in rotatable drive wheel that can roll into contact with the plastic tube.

10. A method for testing the strength of a plastic pipe, characterized in that, The detection method includes: Provide plastic pipes and falling rocks; Position the provided plastic tube on the support platform; Release the provided falling rocks, which are guided through the guide tube to impact the plastic tube; The instantaneous velocity of the rock impacting the plastic pipe is obtained by a velocity sensor, and the deformation of the plastic pipe is detected by a deformation detector. The rock impact strength of the plastic pipe is evaluated by combining the instantaneous velocity and the deformation.

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