Device and method for detecting pressure resistance of building pipe

Abstract

The invention provides a building pipe pressure resistance detection device and detection method, and relates to the field of new building material detection. The building pipe pressure resistance detection device comprises a test frame, the bottom of the test frame is provided with a plurality of groups of slow motion supporting assemblies and driving assemblies, the upper end of the test frame is provided with a plurality of variable-pressure detection assemblies, each variable-pressure detection assembly comprises a hydraulic cylinder, a centralized air valve, an air cylinder, a top head and a detection head, and the hydraulic cylinders are fixed to the upper end of the test frame. The centralized air valve is fixedly installed on one side of the hydraulic cylinder, the spring telescopic rod is fixedly installed at the output end of the hydraulic cylinder, and the four air cylinders are distributed outside the spring telescopic rod at equal intervals in a surrounding mode. According to the device and the method for detecting the pressure resistance of the building pipe, the variable-pressure detection assembly is arranged, when the to-be-detected pipe fitting is pressed by the detection head, air pressure with certain fluctuation can be continuously filled into the air cylinder, and if the pipe fitting is deformed, a fluctuation curve can be changed, so that accurate data can be detected.

Description

Technical Field

[0001] The invention relates to the field of new building material detection, in particular to a device and method for detecting the pressure resistance of building pipes. Background Art

[0002] Construction engineering refers to the planning, investigation, design, construction, completion and other technical work and completed engineering entities for the construction, reconstruction or expansion of buildings and ancillary structures and facilities, as well as the installation of supporting lines, pipelines and equipment. Pipes are essential materials for construction projects, and commonly used ones include water pipes, drainage pipes, gas pipes, heating pipes, wire conduits, rainwater pipes, etc. With the development of science and technology, new building materials are gradually entering the construction market, and the pipes used in home decoration have also experienced the development process of ordinary cast iron pipes → cement pipes → reinforced concrete pipes, asbestos cement pipes → ductile iron pipes, galvanized steel pipes → plastic pipes and aluminum-plastic composite pipes. With the development of society, the utilization rate of building pipes is getting higher and higher, and various pipes are also needed in construction.

[0003] At present, in the process of building pipe production, the compressive performance of the corresponding pipes needs to be tested, especially the pipes of new materials and composite materials. At present, most of them adopt the method of applying extrusion force to the middle end of the pipe and observing the deformation of the pipe to achieve the pressure resistance test of the pipe. However, in the actual test process, the deformation of the building pipes made of new composite materials under the same pressure is related to the pressure time, so there will be deviations in the deformation test data caused by different pressures. In addition, it is necessary to adjust the spatial positions of the supporting mechanism and the extrusion mechanism according to the different lengths of the pipes, which leads to low detection efficiency and has certain limitations. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a device and method for detecting the pressure resistance of building pipes, which solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a building pipe pressure resistance detection device, including a test frame, a plurality of groups of slow-motion support components and drive components are installed at the bottom of the test frame, and a plurality of transformer detection components are installed at the upper end of the test frame.

[0006] The variable pressure detection component includes a hydraulic cylinder, a centralized air valve, an air cylinder, a ram and a detection head. The hydraulic cylinder is fixed to the upper end of the test frame, the centralized air valve is fixedly installed on one side of the hydraulic cylinder, a spring telescopic rod is fixedly installed at the output end of the hydraulic cylinder, four air cylinders are provided, which are equidistantly distributed around the outside of the spring telescopic rod, the fixed end of the air cylinder is fixedly connected to the fixed end of the spring telescopic rod, the telescopic end of the air cylinder is fixed to the telescopic end of the spring telescopic rod, each air cylinder is installed with a pressure detector, the air inlet end of each cylinder is connected to the centralized air valve by an air pipe, the centralized air valve is used to control the air supply to different cylinders by using the air pipe, the ram is fixed to the telescopic end of the spring telescopic rod, the detection head is fixed to the end of the ram away from the spring telescopic rod, and the detection head and the ram are connected by a pressure sensor.

[0007] Preferably, the slow-motion support assembly includes a base A, a swing arm A, a pressure wheel and a compression cylinder. The base A is fixed to one side of the bottom end of the test frame. Two swing arms A are provided, one end of which is hinged to the base A by a large shaft. The pressure wheel is located between the ends of the two swing arms A away from the base A. One end of the compression cylinder is hinged to the base A, and the other end is hinged to the middle position of the swing arm A. When the pressure wheel is subjected to pressure from above, the compression cylinder is compressed.

[0008] Preferably, the slow-motion support assembly corresponds to the voltage transformer detection assembly up and down, and any group of slow-motion support assemblies is provided with two symmetrically distributed ones. The slow-motion support assemblies are symmetrically arranged around the center of the detection head, and the pressure wheels included in the two slow-motion support assemblies are close to each other and are both arranged tilted upward.

[0009] Preferably, the driving assembly includes a base B, a rocker arm B, an electric push rod and an electric drive wheel. The base B is fixed to one side of the bottom end of the test frame, one end of the rocker arm B is hinged to the base B, the electric drive wheel is located between the other ends of the rocker arm B, the stator shaft of the electric drive wheel is fixed to the rocker arm B, the electric drive wheel can rotate relative to the rocker arm B, one end of the electric push rod is hinged to the base B, and the other end is hinged to the middle position of the rocker arm B. When the electric push rod is extended, the electric drive wheel can move to the side away from the base B.

[0010] Preferably, the number and positions of the driving assemblies correspond to the slow-motion support assemblies. The driving assemblies are located above the slow-motion support assemblies. Any group of driving assemblies is provided with two driving assemblies, and are symmetrically arranged around the center of the detection head.

[0011] Preferably, the test frame includes a test platform, columns, a top frame and a bottom frame. There are four columns, and their bottom ends are respectively fixed to the four corners of the upper surface of the test platform. The top frame is fixed between the upper ends of the four columns, and the bottom frame is fixed to the upper surface of the test platform. The fixed end of the hydraulic cylinder is fixed to the top frame, and the base A and the base B are both fixed to the inner wall of the bottom frame.

[0012] Preferably, the spring telescopic rod includes a fixed sleeve, a sliding rod and a spring, the upper end of the sliding rod is inserted into the fixed sleeve and slidably connected to the fixed sleeve, the spring is located between the two, the two ends of the spring are respectively fixedly connected to the fixed sleeve and the sliding rod, the outside of the fixed sleeve and the sliding rod are fixed with clamping rings, and the fixed end and telescopic end of the cylinder are respectively fixed to the upper and lower clamping rings.

[0013] Preferably, the detection head includes a force-bearing seat and a switching head, the force-bearing seat is connected to the top head, and the switching head is screwed on the bottom end of the force-bearing seat by means of threads.

[0014] A method for testing the pressure resistance of building pipes, comprising the following steps: S1: Place the test pipe to be tested into the slow-motion support assembly and make it contact with the pressure wheel; S2: Control the hydraulic cylinder to extend so that the detection head contacts the test workpiece; S3: Control the centralized gas valve to introduce controllable gas into each cylinder, and then test the gas pressure inside the cylinder from the pressure detector; S4: Based on the instantaneous change of air pressure inside the cylinder, the time required for the pipe to fail under the current pressure can be tested.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The device and method for detecting the pressure resistance of building pipes, by setting a variable pressure detection component, controlling the extension of the hydraulic cylinder to make the detection head close to the building pipe to be tested, controlling the air pump and the centralized air valve to inflate multiple cylinders. After the cylinder is inflated, the spring telescopic rod is difficult to be compressed. Similarly, when the detection head contacts the building pipe, the pressure curve inside the cylinder can be tested by the pressure detector when the air is continuously inflated. The same pressure is maintained for a period of time. If the pipe is dented, the detection head will move down instantly, thereby intuitively observing the change of the pressure curve, and the deformation of the workpiece to be detected can be tested according to the fluctuation of the pressure curve. Similarly, since the cylinder and the centralized air valve are set, when the detection head presses the pipe to be detected, a certain fluctuating air pressure can be continuously filled into the cylinder. If the pipe is deformed, the fluctuation curve will change, so accurate data can be measured.

[0016] 2. The device and method for detecting the pressure resistance of building pipes can be used to detect multiple positions such as the middle and end of new material pipes by setting up multiple voltage-changing detection components, and different pressures can be applied according to different positions for parameter recording. It can detect the pressure range in which the pipe deformation occurs. When the average value is obtained through multiple measurements, an accurate pressure resistance detection value can be obtained.

[0017] 3. The device and method for testing the pressure resistance of building pipes are provided with a slow-motion support component. If the new material pipe is heavier, the compression cylinder will buffer the distance at one end. When the pressure is applied for testing, the compression cylinder will be compressed to the limit value without affecting the accuracy of the parameters. In addition, the slow-motion support component can facilitate assembly-line testing and can cope with new material pipes of different weights and specifications.

[0018] 4. The device and method for detecting the pressure resistance of building pipes are provided with a driving component, which can be used to drive the rotation of new material pipes, and the variable pressure detection component is used to test different positions of the new material pipes respectively within the same time, so that the test results are more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a front view of the structure of the present invention; Figure 3 It is a schematic diagram of the structure of the test framework of the present invention; Figure 4 It is a structural schematic diagram of the voltage transformation detection assembly of the present invention; Figure 5 It is a partial structural front view of the voltage transformation detection assembly of the present invention; Figure 6 It is a partial structural schematic diagram of the voltage transformation detection assembly of the present invention; Figure 7 It is a structural schematic diagram of the slow-motion support assembly and the test frame of the present invention; Figure 8 For the present invention Figure 7 A magnified view of the structure at center A; Fig. 9 It is a side view of a part of the structure of the present invention; Fig.10 For the present invention Fig. 9 A magnified view of the structure at point B.

[0020] In the figure: 1. test frame; 101. test platform; 102. column; 103. top frame; 104. bottom frame; 2. slow-motion support assembly; 201. base A; 202. swing arm A; 203. pressure wheel; 204. compression cylinder; 3. drive assembly; 301. base B; 302. rocker arm B; 303. electric push rod; 304. electric drive wheel; 4. voltage transformer detection assembly; 401. hydraulic cylinder; 402. centralized air valve; 403. cylinder; 404. top head; 405. detection head; 4051. force seat; 4052. switching head; 406. spring telescopic rod; 4061. fixing sleeve; 4062. sliding rod; 4063. spring; 4064. clamping ring; 407. pressure detector; 408. air pipe; 409. pressure sensor. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0022] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0023] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0024] In addition, in this application, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0025] like Figure 1-Figure 10 As shown, a device for testing the pressure resistance of building pipes includes a test frame 1, a plurality of groups of slow-motion support components 2 and a drive component 3 are installed at the bottom of the test frame 1, and a plurality of variable-voltage detection components 4 are installed at the upper end of the test frame 1.

[0026] The variable pressure detection assembly 4 includes a hydraulic cylinder 401, a centralized air valve 402, a cylinder 403, a head 404 and a detection head 405. The hydraulic cylinder 401 is fixed to the upper end of the test frame 1, and the centralized air valve 402 is fixedly installed on one side of the hydraulic cylinder 401. A spring telescopic rod 406 is fixedly installed at the output end of the hydraulic cylinder 401. The cylinder 403 is provided with four, which are equidistantly distributed around the outside of the spring telescopic rod 406. The fixed end of the cylinder 403 is fixedly connected to the fixed end of the spring telescopic rod 406. The telescopic end of the cylinder 403 Fixed to the telescopic end of the spring telescopic rod 406, a pressure detector 407 is installed on each cylinder 403, and the air inlet end of each cylinder 403 is connected to the centralized air valve 402 through an air pipe 408. The centralized air valve 402 is used to control the air supply to different cylinders 403 through the air pipe 408. The top head 404 is fixed to the telescopic end of the spring telescopic rod 406, and the detection head 405 is fixed to the end of the top head 404 away from the spring telescopic rod 406. The detection head 405 and the top head 404 are connected by a pressure sensor 409.

[0027] The test frame 1 needs to be stably installed on an existing workbench or test bench and needs to be installed according to a horizontal reference to avoid imbalance problems such as angle tilt.

[0028] This device is externally connected to a hydraulic component and an air compressor for driving the hydraulic cylinder 401, and a plurality of solenoid valves are arranged in the centralized air valve 402, and the valve body is remotely opened and closed by computer control. The air compressor is used to fill the air cylinder 403 with gas. The pressure detector 407 can be set as a recordable barometer or as an air pressure sensor. After the air pressure sensor is connected to the computer, the air pressure data change inside the cylinder 403 can be obtained. The pressure sensor 409 is an existing device, which can obtain the pressure change value between the detection head 405 and the top head 404, and record the pressure value in the computer.

[0029] The slow-motion support assembly 2 includes a base A201, a swing arm A202, a pressure wheel 203 and a compression cylinder 204. The base A201 is fixed to one side of the bottom end of the test frame 1. Two swing arms A202 are provided, one end of which is hinged to the base A201 by a large axis. The pressure wheel 203 is located between the ends of the two swing arms A202 away from the base A201. One end of the compression cylinder 204 is hinged to the base A201, and the other end is hinged to the middle position of the swing arm A202. When the pressure wheel 203 is subjected to pressure from above, the compression cylinder 204 is compressed by force.

[0030] The compression cylinder 204 is an elastic oil cylinder. When under heavy pressure, the compression cylinder 204 can achieve a certain buffer. At the same time, due to the change of buffering, it can adapt to the diameter of new material construction pipes. The pressure wheel 203 is used to support the outer wall of the pipe and can also be used to keep the pipe rotating.

[0031] The slow-motion support assembly 2 corresponds to the voltage-changing detection assembly 4 up and down. Any group of slow-motion support assemblies 2 is provided with two symmetrically distributed ones. The slow-motion support assemblies 2 are symmetrically arranged around the center of the detection head 405. The pressure wheels 203 included in the two slow-motion support assemblies 2 are close to each other and are both arranged tilted upward.

[0032] The symmetrically distributed slow-motion support components 2 can support a cylindrical building pipe, and the detection head 405 just corresponds to the vertical center of the detection building pipe. The pressure wheel 203 arranged tilted upward is used to lift the building pipe.

[0033] The driving assembly 3 includes a base B301, a rocker arm B302, an electric push rod 303 and an electric drive wheel 304. The base B301 is fixed to one side of the bottom end of the test frame 1, one end of the rocker arm B302 is hinged to the base B301, the electric drive wheel 304 is located between the other ends of the rocker arm B302, the stator shaft of the electric drive wheel 304 is fixed to the rocker arm B302, the electric drive wheel 304 can rotate relative to the rocker arm B302, one end of the electric push rod 303 is hinged to the base B301, and the other end is hinged to the middle position of the rocker arm B302. When the electric push rod 303 is extended, the electric drive wheel 304 can move to the side away from the base B301.

[0034] The electric drive wheel 304 is internally provided with a hub motor, which can generate a high torque rotational force after being energized. The electric push rod 303 can be extended when energized, and when extended, the electric drive wheel 304 can fit the building pipe.

[0035] The number and position of the driving components 3 correspond to the slow-motion support components 2 . The driving components 3 are located above the slow-motion support components 2 . Any group of driving components 3 is provided with two driving components 3 , and they are symmetrically arranged around the center of the detection head 405 .

[0036] The symmetrical driving assembly 3 can cooperate with the slow-motion support assembly 2. The coordinated driving of the two can clamp the building pipe and then drive the building pipe to rotate.

[0037] The test frame 1 includes a test platform 101, columns 102, a top frame 103 and a bottom frame 104. There are four columns 102, and their bottom ends are respectively fixed to the four corners of the upper surface of the test platform 101. The top frame 103 is fixed between the upper ends of the four columns 102. The bottom frame 104 is fixed on the upper surface of the test platform 101. The fixed end of the hydraulic cylinder 401 is fixed to the top frame 103, and the base A201 and the base B301 are both fixed to the inner wall of the bottom frame 104.

[0038] The spring telescopic rod 406 includes a fixed sleeve 4061, a sliding rod 4062 and a spring 4063. The upper end of the sliding rod 4062 is inserted into the fixed sleeve 4061 and slidably connected thereto, and the spring 4063 is located between the two. The two ends of the spring 4063 are respectively fixedly connected to the fixed sleeve 4061 and the sliding rod 4062. The outside of the fixed sleeve 4061 and the sliding rod 4062 are fixed with a clamping ring 4064. The fixed end and the telescopic end of the cylinder 403 are respectively fixed to the upper and lower clamping rings 4064.

[0039] The detection head 405 includes a force bearing seat 4051 and a switching head 4052 . The force bearing seat 4051 is connected to the top head 404 , and the switching head 4052 is screwed on the bottom end of the force bearing seat 4051 by using threads.

[0040] The switching head 4052 can be unscrewed to change different specifications. According to the different materials of the products actually tested, it can be changed to a pointed cone or a round head.

[0041] A method for testing the pressure resistance of building pipes, comprising the following steps: S1: placing the test pipe to be tested into the slow-motion support assembly 2 and contacting it with the pressure wheel 203; S2: Control the hydraulic cylinder 401 to extend so that the detection head 405 contacts the test workpiece; S3: Control the centralized gas valve 402 to introduce controllable gas into each cylinder 403, and then test the gas pressure inside the cylinder 403 from the pressure detector 407; S4: According to the instantaneous change of the air pressure inside the cylinder 403, the time required for the pipe to fail under the current pressure can be tested.

[0042] When in use, the hydraulic cylinder 401 is controlled to extend so that the detection head 405 approaches the building pipe to be tested, and the air pump and the centralized air valve 402 are controlled to inflate the multiple cylinders 403. After the cylinders 403 are inflated, the spring telescopic rod 406 is difficult to be compressed. Similarly, when the detection head 405 contacts the building pipe, the pressure curve inside the cylinder 403 can be tested by the pressure detector 407 when the inflation continues. The same pressure is maintained for a period of time. If the pipe is dented, the detection head 405 will move down instantly, thereby visually observing the change of the pressure curve, and the pressure curve can be used to test the pressure curve. To measure the deformation of the workpiece, since the cylinder 403 and the centralized air valve 402 are provided, when the detection head 405 presses the pipe to be detected, a certain fluctuating air pressure can be continuously filled into the cylinder 403. If the pipe is deformed, the fluctuation curve will change, so accurate data can be measured. Multiple variable pressure detection components 4 can be used to detect multiple positions such as the middle and end of the new material pipe, and different pressures can be applied according to different positions for parameter recording. It can be detected within which pressure range the pipe deformation occurs. When the average value is obtained after multiple measurements, an accurate pressure resistance detection value can be obtained.

[0043] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0044] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for testing the pressure resistance of building pipes, characterized in that: It comprises a test frame (1), wherein a plurality of groups of slow-motion support components (2) and a drive component (3) are installed at the bottom of the test frame (1), and a plurality of voltage-changing detection components (4) are installed at the upper end of the test frame (1); The variable pressure detection assembly (4) comprises a hydraulic cylinder (401), a centralized air valve (402), an air cylinder (403), a top head (404) and a detection head (405); the hydraulic cylinder (401) is fixed to the upper end of the test frame (1); the centralized air valve (402) is fixedly mounted on one side of the hydraulic cylinder (401); a spring telescopic rod (406) is fixedly mounted on the output end of the hydraulic cylinder (401); the air cylinder (403) is provided with four spring telescopic rods (406) which are equidistantly distributed around the outside of the spring telescopic rod (406); the fixed end of the air cylinder (403) is fixedly connected to the fixed end of the spring telescopic rod (406); the telescopic end of the air cylinder (403) is fixedly connected to the fixed end of the spring telescopic rod (406); The end of the cylinder (403) is fixed to the telescopic end of the spring telescopic rod (406), a pressure detector (407) is installed on each cylinder (403), the air inlet end of each cylinder (403) is connected to the centralized air valve (402) through an air pipe (408), and the centralized air valve (402) is used to control the air supply to different cylinders (403) through the air pipe (408), the top head (404) is fixed to the telescopic end of the spring telescopic rod (406), the detection head (405) is fixed to one end of the top head (404) away from the spring telescopic rod (406), and the detection head (405) and the top head (404) are connected through a pressure sensor (409).

2. The device for detecting the pressure resistance of building pipes according to claim 1, characterized in that: The slow-motion support assembly (2) comprises a base A (201), a swing arm A (202), a pressure wheel (203) and a compression cylinder (204); the base A (201) is fixed to one side of the bottom end of the test frame (1); two swing arms A (202) are provided, one end of which is hinged to the base A (201) by a large shaft; the pressure wheel (203) is located between the ends of the two swing arms A (202) away from the base A (201); one end of the compression cylinder (204) is hinged to the base A (201), and the other end is hinged to the middle position of the swing arm A (202); when the pressure wheel (203) is subjected to pressure from above, the compression cylinder (204) is compressed by force.

3. The device for detecting the pressure resistance of building pipes according to claim 2, characterized in that: The slow-motion support assembly (2) corresponds to the voltage-changing detection assembly (4) in upper and lower positions. Any group of slow-motion support assemblies (2) is provided with two symmetrically distributed slow-motion support assemblies (2). The slow-motion support assemblies (2) are symmetrically arranged around the center of the detection head (405). The pressure wheels (203) included in the two slow-motion support assemblies (2) are close to each other and are both arranged to face upwards.

4. The device for detecting the pressure resistance of building pipes according to claim 3 is characterized in that: The driving assembly (3) comprises a base B (301), a rocker arm B (302), an electric push rod (303) and an electric drive wheel (304); the base B (301) is fixed to one side of the bottom end of the test frame (1); one end of the rocker arm B (302) is hinged to the base B (301); the electric drive wheel (304) is located between the other end of the rocker arm B (302); the stator shaft of the electric drive wheel (304) is fixed to the rocker arm B (302); the electric drive wheel (304) can rotate relative to the rocker arm B (302); one end of the electric push rod (303) is hinged to the base B (301); the other end is hinged to the middle position of the rocker arm B (302); when the electric push rod (303) is extended, the electric drive wheel (304) can move to a side away from the base B (301).

5. The device for detecting the pressure resistance of building pipes according to claim 4, characterized in that: The number and position of the drive assemblies (3) correspond to the slow-motion support assemblies (2); the drive assemblies (3) are located above the slow-motion support assemblies (2); any group of drive assemblies (3) is provided with two drive assemblies, which are symmetrically arranged around the center of the detection head (405).

6. The device for testing the pressure resistance of building pipes according to claim 4, characterized in that: The test frame (1) comprises a test platform (101), columns (102), a top frame (103) and a bottom frame (104); four columns (102) are provided, and their bottom ends are respectively fixed to the four corners of the upper surface of the test platform (101); the top frame (103) is fixed between the upper ends of the four columns (102); the bottom frame (104) is fixed to the upper surface of the test platform (101); the fixed end of the hydraulic cylinder (401) is fixed to the top frame (103); and the base A (201) and the base B (301) are both fixed to the inner side wall of the bottom frame (104).

7. The device for testing the pressure resistance of building pipes according to claim 1, characterized in that: The spring telescopic rod (406) comprises a fixed sleeve (4061), a sliding rod (4062) and a spring (4063). The upper end of the sliding rod (4062) is inserted into the fixed sleeve (4061) and slidably connected thereto, and the spring (4063) is located between the two. The two ends of the spring (4063) are respectively fixedly connected to the fixed sleeve (4061) and the sliding rod (4062). The outsides of the fixed sleeve (4061) and the sliding rod (4062) are fixedly sleeved with clamping rings (4064). The fixed end and the telescopic end of the cylinder (403) are respectively fixed to the upper and lower clamping rings (4064).

8. The device for testing the pressure resistance of building pipes according to claim 1, characterized in that: The detection head (405) comprises a force bearing seat (4051) and a switching head (4052); the force bearing seat (4051) is connected to the top head (404); and the switching head (4052) is screwed onto the bottom end of the force bearing seat (4051) by means of a thread.

9. A method for testing the pressure resistance of building pipes, using the device for testing the pressure resistance of building pipes according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1: placing the test pipe to be tested into the slow-motion support assembly (2) and bringing it into contact with the pressure wheel (203); S2: Controlling the hydraulic cylinder (401) to extend so that the detection head (405) contacts the test workpiece; S3: Controlling the centralized gas valve (402) to introduce controllable gas into each cylinder (403), and then testing the gas pressure inside the cylinder (403) from the pressure detector (407); S4: Based on the instantaneous change of the air pressure inside the cylinder (403), the time required for the pipe fitting to fail under the current pressure can be tested.

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