Pressure resistance detection device for embedded hydraulic engineering pipeline

Abstract

The invention relates to the related technical field of engineering pipeline detection, in particular to a pre-embedded hydraulic engineering pipeline pressure resistance detection device which comprises a base and a mounting frame fixedly mounted on the base, a sliding plate is slidably arranged on the base, and clamping pieces are symmetrically arranged on the sliding plate; the pressure testing mechanism is mounted on the mounting frame and comprises a limiting ring and a plurality of elastic detection pieces distributed along the circumference of the limiting ring; the reciprocating pushing piece is mounted on the mounting frame and is connected with the elastic detection piece; the intermittent driving part is mounted on the base, the plurality of elastic detection parts are controlled to rotate relative to the pipeline through temporary detection work intermittence of the elastic detection parts, and the pipeline can move relative to the elastic detection parts, so that the elastic detection parts can capture thin-wall and concave areas caused by non-uniformity of an extrusion die at different angles of the pipeline; and meanwhile, local strength insufficiency caused by defects of the extrusion die on the pipeline is rapidly positioned.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engineering pipeline detection, and specifically relates to a compressive resistance detection device for a pre-buried water conservancy engineering pipeline. BACKGROUND

[0002] Pipeline pressure test is a key step for pipeline system pressure test after production and before formal use. Before the compression test, the design parameters of the pipeline need to be determined to determine the maximum test pressure that the pipeline can withstand. Different compression tests need to be carried out according to the use place of the pipeline. The pre-buried water conservancy engineering pipeline needs to be tested for the pressure of the inner pipeline and the pressure of the outer wall. The pressure test of the inner pipeline is to avoid defects in the pipeline due to production problems that cannot withstand the maximum water pressure of the water supply and drainage. The pressure test of the outer wall is to avoid deformation of the outer wall caused by the pressure of the concrete pouring or backfilling soil after backfilling.

[0003] The existing pipeline generally adopts an extrusion molding processing method. However, if the extrusion molded pipeline has defects, scratches or pits may appear on the outer surface of the mold. These defects usually appear continuously at the same position. When the engineering pipeline is subjected to compressive resistance detection, a method of applying pressure to the pipeline is adopted, and the pressure is at the maximum test pressure that the pipeline can withstand. Whether the outer wall of the pipeline is deformed is observed. However, this test method cannot uniformly detect the pipeline. When the mold is extruded, the damaged part will hinder the flow of the melt, causing the material to accumulate to form a protrusion or uneven thickness. This accumulation will change irregularly with the increase of the extrusion time, so the pipeline will also have different traces on the same straight line. Therefore, the pipeline needs to be tested repeatedly, which reduces the efficiency of the compression test and makes it difficult to quickly and accurately locate the weak compression area of the pipeline. SUMMARY

[0004] The present application aims to provide a compressive resistance detection device for a pre-buried water conservancy engineering pipeline to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: A compressive resistance detection device for a pre-buried water conservancy engineering pipeline, comprising a base and a mounting bracket fixedly installed on the base, a sliding plate is slidably arranged on the base, and a clamping piece is symmetrically arranged on the sliding plate to limit and clamp the pipeline; A pressure test mechanism is installed on the mounting bracket and comprises a limiting ring and a plurality of elastic detection pieces distributed along the circumference of the limiting ring. A reciprocating pushing piece is installed on the mounting frame and arranged along the axial direction of the limiting ring and connected with the elastic detection piece. When the reciprocating pushing piece moves along the axial direction of the pipeline, the elastic detection piece moves relative to the limiting ring and presses the pipeline to detect the deformation variation of the elastic detection piece. An intermittent driving piece is installed on the base and can intermittently control the movement of the pipeline relative to the elastic detection piece, and the elastic detection piece can deflect relative to the pipeline.

[0006] The base is fixedly installed with a guide rail, the sliding plate is slidingly installed on the guide rail, and the base is provided with a threaded pushing piece capable of controlling the movement of the sliding plate along the length direction of the guide rail.

[0007] The threaded pushing piece comprises a second lead screw rotatingly installed on the base, and a moving cylinder threadedly connected with the second lead screw and fixed with the sliding plate.

[0008] The elastic detection piece comprises an extrusion sleeve, the extrusion sleeve is fixedly installed with a receiving hoop, the limiting ring is circumferentially provided with a plurality of strip-shaped grooves slidingly connected with the receiving hoop, a cylindrical cavity is formed in the extrusion sleeve, an extrusion shaft is slidingly arranged in one end of the cylindrical cavity, and a pressure sensor is fixedly installed in the other end of the cylindrical cavity; the extrusion shaft is fixedly provided with a pressure plate arranged in an arc shape and capable of abutting against the pipeline at one end away from the extrusion sleeve. A spring is further arranged in the cylindrical cavity, one end of the spring abuts against the extrusion shaft, and the other end of the spring abuts against the pressure sensor.

[0009] The mounting frame is rotatingly installed with a driving cylinder, a sliding groove is formed in the outer wall of the driving cylinder, the reciprocating pushing piece performs reciprocating action when the driving cylinder rotates, and the extrusion sleeve is reciprocally extruded through a plurality of connecting rods. The reciprocating pushing piece comprises a sleeve, the sleeve is arranged along the axial direction of the driving cylinder and slidingly connected with the base, and a first rolling ball is movably arranged on the inner wall of the sleeve and slidingly adapted with the sliding groove. A connecting ring rotatingly installed on the sleeve is further provided, the connecting ring is hingedly connected with the connecting rod, and one end of the connecting rod away from the connecting ring is hingedly connected with the extrusion sleeve.

[0010] The pressure resistance testing device for pre-embedded water conservancy pipelines as described above: the intermittent drive component includes a first lead screw rotatably mounted on the base, the first lead screw being driven to rotate by a servo motor fixedly mounted on the base, and a threaded cylinder being threadedly connected to the first lead screw, a connecting hoop being fixedly mounted on the threaded cylinder, and a first sleeve and a second sleeve being fixedly mounted on both sides of the connecting hoop respectively. It also includes a first drive shaft and a second drive shaft that are rotatably mounted on the base, and the first sleeve and the second sleeve are slidably sleeved on the first drive shaft and the second drive shaft, respectively.

[0011] The pressure resistance testing device for pre-embedded water conservancy pipelines as described above: a first limiting groove and a second limiting groove are respectively formed on the first drive shaft and the second drive shaft; A second ball bearing is movably disposed on the inner wall of the first sleeve and slides in cooperation with the first limiting groove, and a third ball bearing is movably disposed on the inner wall of the second sleeve and slides in cooperation with the second limiting groove.

[0012] As described above, the pressure resistance testing device for pre-embedded water conservancy pipelines: the first drive shaft is connected to the first rotating shaft rotatably mounted on the mounting frame via the first toothed belt, and a third gear is fixedly connected to the first rotating shaft. The third gear can mesh with the second toothed ring fixedly mounted on the drive cylinder.

[0013] The pressure resistance testing device for pre-embedded water conservancy pipelines as described above: the second drive shaft is connected to the second lead screw through a gear set; The second drive shaft is connected to the second central shaft rotatably mounted on the mounting bracket via the second toothed belt, and a fourth gear is fixedly connected to the second central shaft. The fourth gear can mesh with the first toothed ring fixedly mounted on the limiting ring.

[0014] Compared with the prior art, the beneficial effects of the present invention are: When elastic testing elements are used to test the compressive strength of pipelines, the changes in the deformation of the elastic testing elements can be used to test whether the compressive strength of the pipeline's outer wall is up to standard. During the intermittent testing of the elastic testing elements, the rotation of the limiting ring drives multiple elastic testing elements to rotate synchronously, allowing the elastic testing elements to perform circumferential testing of the pipeline. This maintains a constant contact pressure with the pipe wall, ensuring uniform testing of the pipeline's outer wall compressive strength. The loading force is evenly distributed throughout the circumference, and it can capture thin walls, depressions, or stress concentration areas caused by uneven extrusion die at different angles. At the same time, the pipeline can automatically move intermittently during testing to test the compressive performance at different locations, quickly locating localized strength deficiencies caused by extrusion die defects, further accelerating the efficiency of pipeline compressive strength testing. Attached Figure Description

[0015] Figure 1 It is a structure diagram of the anti-pressure detection device for the pre-buried water conservancy pipeline.

[0016] Figure 2 It is a structure diagram of the clamping piece in the anti-pressure detection device for the pre-buried water conservancy pipeline.

[0017] Figure 3 It is a structure diagram of the limiting ring and the driving cylinder in the anti-pressure detection device for the pre-buried water conservancy pipeline.

[0018] Figure 4 It is a structure diagram of the elastic detection piece and the reciprocating pushing piece in the anti-pressure detection device for the pre-buried water conservancy pipeline.

[0019] Figure 5 It is a structure diagram of the elastic detection piece in the anti-pressure detection device for the pre-buried water conservancy pipeline.

[0020] Figure 6 It is a structure diagram of the reciprocating pushing piece in the anti-pressure detection device for the pre-buried water conservancy pipeline.

[0021] Figure 7 It is a structure diagram of the intermittent driving piece in the anti-pressure detection device for the pre-buried water conservancy pipeline.

[0022] Figure 8 It is a structure diagram of the first transmission shaft and the second transmission shaft in the anti-pressure detection device for the pre-buried water conservancy pipeline.

[0023] Figure 9 It is a structure diagram of the first screw rod and the first transmission shaft and the second transmission shaft in the anti-pressure detection device for the pre-buried water conservancy pipeline.

[0024] Figure 10 It is a structure diagram of the threaded sleeve and the first sleeve and the second sleeve in the anti-pressure detection device for the pre-buried water conservancy pipeline.

[0025] In the figure: 1, base; 2, mounting frame; 3, guide rail; 4, sliding plate; 5, clamping piece; 6, support hoop; 7, drive cylinder; 701, sliding groove; 8, limiting ring; 801, strip-shaped groove; 9, first tooth ring; 10, second tooth ring; 11, extrusion sleeve; 12, connecting rod; 13, extrusion shaft; 1301, pressing plate; 14, spring; 15, sleeve; 1501, first ball; 16, connecting ring; 17, servo motor; 18, first lead screw; 19, first transmission shaft; 1901, first limiting groove; 20, second transmission shaft; 2001, second limiting groove; 21, second lead screw; 22, moving cylinder; 23, gear set; 24, first toothed belt; 25, first intermediate shaft; 26, third gear; 27, second toothed belt; 28, second intermediate shaft; 29, fourth gear; 30, threaded cylinder; 31, connecting hoop; 32, first sleeve; 3201, second ball; 33, second sleeve; 3301, third ball. DETAILED DESCRIPTION

[0026] Various exemplary embodiments, features, and aspects of the present application will be described herein below with reference to the accompanying drawings. The same reference numbers in different drawings represent the same or similar elements or components. Although various aspects of the embodiments are illustrated in the drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0027] The term "exemplary" is used herein in the sense of being an example, instance, or illustration. Any implementation described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations.

[0028] In addition, numerous specific details are given herein in order to provide a thorough understanding of the present application. Those of ordinary skill in the relevant art will recognize that the application can be practiced without the specific details included herein. In some instances, well-known methods, procedures, components, and circuits have not been described in detail in order to not obscure aspects of the present application.

[0029] Please refer to Figures 1-10 In the embodiment of the present application, a kind of pre-buried water conservancy project pipeline compression resistance detection device, including base 1 and fixedly installed on the mounting frame 2 of base 1, the base 1 is slidably provided with sliding plate 4, and the sliding plate 4 is symmetrically provided with clamping piece 5, for limiting clamping the pipeline; Pressure test mechanism, installed on the mounting frame 2, including limiting ring 8 and a plurality of elastic detection pieces distributed along the circumference of the limiting ring 8; Reciprocating pusher, installed on the mounting frame 2, is arranged along the axial direction of the limiting ring 8, and is connected with the elastic detection piece, when the reciprocating pusher moves along the axial direction of the pipeline, the elastic detection piece moves relative to the limiting ring 8 and extrudes the pipeline to detect the deformation amount change of the elastic detection piece; Intermittent driving element is installed on the base 1, can intermittently control the pipeline relative to the elastic detection element moves, and the elastic detection element can deflect relative to the pipeline.

[0030] It should be noted that the pre-embedded water conservancy pipeline needs to detect the inner wall and outer wall of the pipeline respectively, and the outer wall of the pipeline is tested in the embodiment.

[0031] In the embodiment, when the outer wall of the pipeline is tested, the intermittent driving element is started to work, driving the reciprocating pushing element to perform multiple reciprocating movements along the axial direction of the pipeline, and when each reciprocating action is performed, the plurality of elastic detection elements simultaneously move relative to the limiting ring 8 and apply pressure to the pipeline. When the elastic detection element applies pressure to the pipeline to the maximum rated force that the outer wall of the pipeline can withstand, it lasts for a period of time, and the change of the deformation amount of the elastic detection element in this period of time can test whether the compressive strength of the outer wall of the pipeline is qualified. When the reciprocating pushing element completes a set of reciprocating movement work, the elastic detection element completes a test on the pipeline. In the gap of the multiple reciprocating movements of the reciprocating pushing element, the sliding plate 4 slides on the guide rail 3 under the drive of the intermittent driving element, so that the pipeline moves relative to the elastic detection element. At the same time, the limiting ring 8 rotates to drive the plurality of elastic detection elements to rotate synchronously, so that the elastic detection element can perform circumferential test on the pipeline and always maintain constant contact pressure with the pipe wall, so as to realize uniform test on the compressive strength of the outer wall of the pipeline, so that the load is uniformly distributed on the entire circumference. It can capture the thin wall, depression or stress concentration area caused by uneven extrusion die at different angles, and the pipeline can automatically move intermittently during detection to detect the compressive performance of different positions, quickly locate the local insufficient strength caused by the defect of the extrusion die, and further accurately detect the compressive strength of the pipeline.

[0032] As a further scheme of the application, please refer to Figure 2 and Figure 9 The base 1 is fixedly installed with a guide rail 3, the sliding plate 4 is slidably installed on the guide rail 3, and the base 1 is provided with a threaded pushing element capable of controlling the sliding plate 4 to move along the length direction of the guide rail 3.

[0033] The threaded pushing element comprises a second screw rod 21 rotatably installed on the base 1, and a moving cylinder 22 threadedly connected to the second screw rod 21, and the moving cylinder 22 is fixed with the sliding plate 4.

[0034] Considering that the mold may be worn during long-term use, resulting in that the size or shape of the formed pipe does not meet the requirements. Scratches or dents may appear on the outer surface of the mold, and these defects will form continuous marks on the formed pipe, so it is necessary to detect the pipe in the circumferential direction. However, when the mold is extruded, the damaged part will hinder the flow of the melt, resulting in material accumulation to form a protrusion or uneven thickness. This accumulation will show irregular changes with the increase of extrusion time, so the pipe will also have different marks on a straight line. When the pipe is detected, the movement of the pipe is needed to quickly locate the local insufficient strength area caused by the defects of the extrusion mold.

[0035] As a further scheme of the present application, please refer to Figure 5 The elastic detection member comprises an extrusion sleeve 11, a receiving hoop is fixedly installed on the extrusion sleeve 11, a plurality of strip-shaped grooves 801 are circumferentially distributed on the limiting ring 8 and are in sliding connection with the receiving hoop, a cylindrical cavity is formed in the extrusion sleeve 11, an extrusion shaft 13 is slidingly arranged in one end of the cylindrical cavity, and a pressure sensor is fixedly installed in the other end of the cylindrical cavity; an arc-shaped pressure plate 1301 capable of abutting against the pipe is fixedly arranged on one end of the extrusion shaft 13 away from the extrusion sleeve 11. Further comprising a spring 14, which is arranged in the cylindrical cavity, one end of the spring 14 abuts against the extrusion shaft 13, and the other end of the spring 14 abuts against the pressure sensor.

[0036] In the initial state, the pressure plate 1301 is separated from the pipe, so that the pipe is conveniently limited and passes through the limiting ring 8, and the pressure plate 1301 does not interfere with the pipe.

[0037] Preferably, a supporting hoop 6 is fixedly installed on the mounting frame 2, and the limiting ring 8 is in rotational connection with the supporting hoop 6.

[0038] During formal detection, the plurality of extrusion sleeves 11 are simultaneously subjected to a pushing force towards the pipe under the control of the reciprocating pushing member, so that the pressure plate 1301 moves towards the pipe until the pressure plate 1301 abuts against the pipe. At this time, the spring 14 is in a compressed state, and the elastic potential energy automatically stored by the spring 14 reaches the rated compressive strength borne by the outer wall of the pipe. After the pressure plate 1301 applies pressure to the outer wall of the pipe for a period of time, the pressure plate 1301 can be automatically reset under the driving of the reciprocating pushing member. During the detection process, whether the compressive strength of the pipe is qualified is judged according to the data transmitted by the pressure sensor. When the limiting ring 8 rotates relative to the pipe, the pressure plate 1301 can detect the compressive strength of the pipe at different angular positions. The thin-walled, recessed or stress-concentrated areas caused by the non-uniform extrusion mold can be captured at different angles, so that the area with unqualified compressive strength on the pipe can be quickly detected and located.

[0039] As a further scheme of the present application, please refer toFigure 6 The mounting frame 2 is rotationally mounted with a driving cylinder 7, a sliding groove 701 is formed on the outer wall of the driving cylinder 7, and the reciprocating pushing piece performs reciprocating action when the driving cylinder 7 rotates, and the extrusion sleeve 11 is controlled to reciprocate extrude through a plurality of connecting rods 12.

[0040] The reciprocating pushing piece comprises a sleeve 15 which is arranged along the axial direction of the driving cylinder 7 and is slidably connected with the base 1, and a first ball 1501 is movably arranged on the inner wall of the sleeve 15 and is slidably matched with the sliding groove 701; Further comprising a connecting ring 16 which is rotationally mounted on the sleeve 15, the connecting ring 16 is hingedly connected with the connecting rod 12, and the end of the connecting rod 12 away from the connecting ring 16 is hingedly connected with the extrusion sleeve 11.

[0041] In one embodiment, a guide hoop is slidably arranged on the base 1, the guide hoop is fixed with the sleeve 15, so that when the driving cylinder 7 rotates, the sleeve 15 moves linearly along the axial direction of the driving cylinder 7 under the limitation of the guide hoop.

[0042] Under the control of the intermittent driving piece, when the driving cylinder 7 rotates, the sliding groove 701 on the driving cylinder 7 produces an inclined force on the first ball 1501, at this time, the sleeve 15 moves reciprocatingly linearly along the axial direction of the driving cylinder 7 under the limitation of the guide hoop, the sleeve 15 can drive the connecting ring 16 to move synchronously when the sleeve 15 moves, and when the first ball 1501 moves to the end of the sliding groove 701, the driving cylinder 7 stops rotating under the control of the intermittent driving piece, at this time, the pressing plate 1301 abuts against the pipeline, and a time is reserved for the pressing strength detection of the pipeline by the pressing plate 1301.

[0043] Wherein, when the extrusion sleeve 11 deflects relative to the pipeline, the connecting ring 16 rotates relative to the sleeve 15 under the driving of the connecting rod 12, and the rotation of the extrusion sleeve 11 does not interfere with the position of the sleeve 15.

[0044] As a further scheme of the present application, please refer to Figure 7 、 Figure 8 、 Figure 9 and Figure 10 The intermittent driving piece comprises a first lead screw 18 which is rotationally mounted on the base 1, the first lead screw 18 is driven to rotate by a servo motor 17 which is fixedly mounted on the base 1, a threaded cylinder 30 is threadedly connected on the first lead screw 18, a connecting hoop 31 is fixedly mounted on the threaded cylinder 30, and a first sleeve 32 and a second sleeve 33 are fixedly mounted on the two sides of the connecting hoop 31, respectively; Further comprising a first transmission shaft 19 and a second transmission shaft 20 which are rotationally mounted on the base 1, and the first sleeve 32 and the second sleeve 33 are slidably sleeved on the first transmission shaft 19 and the second transmission shaft 20, respectively.

[0045] Preferably, the first transmission shaft 19 and the second transmission shaft 20 are respectively provided with a first limiting groove 1901 and a second limiting groove 2001; The first sleeve 32 is movably provided with a second ball 3201 on the inner wall, which is in sliding fit with the first limiting groove 1901, and the second sleeve 33 is movably provided with a third ball 3301 on the inner wall, which is in sliding fit with the second limiting groove 2001.

[0046] The first limiting groove 1901 is divided into multiple sections (including A threaded groove, B straight groove, and C threaded groove), and the adjacent two multiple sections are connected through a D straight groove. The second limiting groove 2001 is divided into multiple sections of a straight groove and a threaded groove. The multiple sections of the groove are aligned with the a straight groove, and the D straight groove is aligned with the b threaded groove, so as to realize the intermittent rotation of the first transmission shaft 19 and the second transmission shaft 20.

[0047] The first transmission shaft 19 is connected with a first intermediate shaft 25 rotatably installed on the mounting frame 2 through a first toothed belt 24, the first intermediate shaft 25 is fixedly connected with a third gear 26, and the third gear 26 can be engaged with a second gear ring 10 fixedly installed on the driving cylinder 7.

[0048] The second transmission shaft 20 is connected with the second screw rod 21 through a gear set 23. The second transmission shaft 20 is connected with a second intermediate shaft 28 rotatably installed on the mounting frame 2 through a second toothed belt 27, the second intermediate shaft 28 is fixedly connected with a fourth gear 29, and the fourth gear 29 can be engaged with a first gear ring 9 fixedly installed on the limiting ring 8.

[0049] In the initial state, the second ball 3201 is located in the A thread groove, the third ball 3301 is located in the a straight groove, the servo motor 17 is started to work, the output shaft of the servo motor 17 is fixed with the first lead screw 18, so that the output shaft rotates to drive the first lead screw 18 to rotate synchronously, when the first lead screw 18 rotates, under the limitation of the connecting hoop 31, the threaded barrel 30 moves linearly along the axial direction of the first lead screw 18, the movement of the connecting hoop 31 can drive the first sleeve 32 and the second sleeve 33 to move synchronously, at this time, the second ball 3201 generates an inclined force on the A thread groove, so that the first transmission shaft 19 rotates, and through transmission, a plurality of pressing plates 1301 can be controlled to move towards the pipeline at the same time, and when the second ball 3201 moves to the B straight groove, the pressing plate 1301 is in abutting state with the pipeline, and can last for a period of time, and when the second ball 3201 moves to the D straight groove, the third ball 3301 moves to the b thread groove, at this time, the second transmission shaft 20 rotates, through transmission, the pipeline can be controlled to move relative to the pressing plate 1301, and at the same time, a plurality of pressing plates 1301 can rotate relative to the pipeline, so that when the pressing plate 1301 continuously detects, the pipeline can be detected at different angles, and the local insufficient strength caused by the defect of the extrusion die can be quickly positioned.

[0050] It will be apparent to those skilled in the art that the application is not limited to the details of the above-exemplified embodiments but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the application. The embodiments shall, therefore, be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the above description, and it is intended that all changes and modifications which come within the meaning and range of equivalency of the elements recited in the claims are embraced therein. Any reference signs in the claims shall not be construed as limiting the claims concerned to the features indicated by such signs.

[0051] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. A compression resistance detection device for pre-embedded hydraulic engineering pipes, comprising a base (1) and a mounting rack (2) fixedly installed on the base (1), characterized in that, The base (1) is provided with a sliding plate (4) slidingly arranged thereon, and the sliding plate (4) is provided with clamping members (5) symmetrically arranged thereon for limiting and clamping the pipeline; The pressure testing mechanism is installed on the mounting frame (2) and comprises a limiting ring (8) and a plurality of elastic detection members distributed along the circumference of the limiting ring (8); The reciprocating pushing member is installed on the mounting frame (2) and arranged along the axial direction of the limiting ring (8) and connected with the elastic detection members; when the reciprocating pushing member moves along the axial direction of the pipeline, the elastic detection members move relative to the limiting ring (8) and press the pipeline to detect the deformation amount change of the elastic detection members; The intermittent driving member is installed on the base (1) and can intermittently control the movement of the pipeline relative to the elastic detection members, and the elastic detection members can deflect relative to the pipeline.

2. The compression resistance detection device for a pre-buried hydraulic engineering pipeline according to claim 1, characterized in that, The base (1) is provided with a guide rail (3) fixedly installed thereon, the sliding plate (4) is slidingly installed on the guide rail (3), and the base (1) is provided with a threaded pushing member capable of controlling the movement of the sliding plate (4) along the length direction of the guide rail (3).

3. The compression resistance detection device for a pre-buried hydraulic engineering pipeline according to claim 2, characterized in that, The threaded pushing member comprises a second lead screw (21) rotatably installed on the base (1), and a moving cylinder (22) threadedly connected with the second lead screw (21), wherein the moving cylinder (22) is fixed with the sliding plate (4).

4. The compression resistance detection device for a pre-buried hydraulic engineering pipeline according to claim 3, characterized in that, The elastic detection member comprises an extrusion sleeve (11) provided with a receiving clamp fixedly installed thereon, the limiting ring (8) is provided with a plurality of strip-shaped grooves (801) slidingly connected with the receiving clamp and distributed along the circumference, a cylindrical cavity is formed in the extrusion sleeve (11), an extrusion shaft (13) is slidingly arranged in one end of the cylindrical cavity, and a pressure sensor is fixedly installed in the other end of the cylindrical cavity; the extrusion shaft (13) is provided with a pressure plate (1301) fixedly arranged on the end thereof away from the extrusion sleeve (11) and having an arc-shaped structure capable of abutting against the pipeline. Further comprising a spring (14) arranged in the cylindrical cavity, one end of the spring (14) abuts against the extrusion shaft (13), and the other end of the spring (14) abuts against the pressure sensor.

5. The compression resistance detection device for a pre-buried hydraulic engineering pipeline according to claim 4, characterized in that, The mounting frame (2) is rotatably provided with a driving cylinder (7), and the outer wall of the driving cylinder (7) is formed with a sliding groove (701); when the driving cylinder (7) rotates, the reciprocating pushing member performs a reciprocating action, and the extrusion sleeve (11) is controlled to reciprocally extrude through a plurality of connecting rods (12). The reciprocating pushing member comprises a sleeve (15) arranged along the axial direction of the driving cylinder (7) and slidingly connected with the base (1), and the inner wall of the sleeve (15) is movably provided with a first rolling ball (1501) slidingly matched with the sliding groove (701); Further comprising a connecting ring (16) rotatably installed on the sleeve (15), the connecting ring (16) is hingedly connected with the connecting rod (12), and one end of the connecting rod (12) away from the connecting ring (16) is hingedly connected with the extrusion sleeve (11).

6. The compression resistance detection device for a pre-buried hydraulic engineering pipeline according to claim 5, characterized in that, The intermittent driving member comprises a first screw rod (18) rotatably installed on the base (1), the first screw rod (18) is driven to rotate by a servo motor (17) fixedly installed on the base (1), and a threaded barrel (30) is threadedly connected to the first screw rod (18), the threaded barrel (30) is fixedly installed with a connecting hoop (31), and the connecting hoop (31) is fixedly installed with a first sleeve (32) and a second sleeve (33) on both sides, respectively. Further comprising a first transmission shaft (19) and a second transmission shaft (20) rotatably installed on the base (1), the first sleeve (32) and the second sleeve (33) are slidably sleeved on the first transmission shaft (19) and the second transmission shaft (20), respectively.

7. The compression resistance detection device for a pre-buried hydraulic engineering pipeline according to claim 6, characterized in that, The first transmission shaft (19) and the second transmission shaft (20) are respectively formed with a first limiting groove (1901) and a second limiting groove (2001). The first sleeve (32) is movably provided with a second ball (3201) on the inner wall, which is in sliding fit with the first limiting groove (1901), and the second sleeve (33) is movably provided with a third ball (3301) on the inner wall, which is in sliding fit with the second limiting groove (2001).

8. The compression resistance detection device for a pre-buried hydraulic engineering pipeline according to claim 6, characterized in that, The first transmission shaft (19) is connected with a first intermediate shaft (25) rotatably installed on the mounting frame (2) through a first toothed belt (24), the first intermediate shaft (25) is fixedly connected with a third gear (26), and the third gear (26) can be engaged with a second gear ring (10) fixedly installed on the driving barrel (7).

9. The compression resistance detection device for a pre-buried hydraulic engineering pipeline according to claim 6, characterized in that, The second transmission shaft (20) is connected with the second screw rod (21) through a gear set (23). The second transmission shaft (20) is connected with a second intermediate shaft (28) rotatably installed on the mounting frame (2) through a second toothed belt (27), and the second intermediate shaft (28) is fixedly connected with a fourth gear (29), and the fourth gear (29) can be engaged with a first gear ring (9) fixedly installed on the limiting ring (8).

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