Walking type detection device and method for surface cracks of heat supply pipe network

Abstract

The invention relates to the field of heat supply pipe networks, in particular to a heat supply pipe network surface crack walking type detection device and method.The heat supply pipe network surface crack walking type detection device comprises a limiting assembly, a moving assembly is installed on the top of the limiting assembly, and the moving assembly is in transmission connection with a detection assembly; according to the device, the needle tube detection structure is driven to slowly move on the outer wall of a pipeline, when the needle tube detection structure makes contact with a crack, a second compression spring rebounds to drive the needle tube detection structure to enter the crack, then the depth of the crack is judged according to the sliding distance of a sliding tube in a sleeving tube in the moving process in the crack, and the crack detection precision is improved; the needle tube detection structure can transversely move in the width direction while being extruded, a sliding rod is driven in sequence to extrude a first compression spring in a sleeving cylinder, the first compression spring acts rebound force on a pressure sensor when sensing pressure, the precision effect of the crack detection range is improved, and meanwhile the walking type detection effect is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of heating pipe networks, and in particular relates to a walking detection device and method for surface cracks of a heating pipe network. Background Art

[0002] The heating network refers to the heating pipeline system from the heat source to the thermal inlet of the building. It includes multiple heating pipes to form a pipeline network for transporting and distributing heating media.

[0003] After searching, in the prior art, Chinese Patent Publication No.: CN218885671U, Authorization Publication Date: 2023-04-18, discloses a pipe hardness detection mechanism for a heating network in a thermal power plant, comprising a drive box, a drive motor is provided on one side of the drive box along the width direction, a controller is provided on one side of the drive box along the length direction, a slide groove is provided on the surface of the drive box, and two groups of detection components that can detect the hardness of the pipeline are symmetrically provided on the top of the drive box; the above embodiment can adjust the clamping size according to the diameter of the heating network pipeline, making it more convenient for the inspector to use and improving the detection efficiency.

[0004] However, the device still has the following defects:

[0005] It is impossible to perform high-range detection of cracks on the pipe surface, and it is impossible to determine the internal depth of the cracks, which reduces the working effect of walking-type detection. Summary of the invention

[0006] In view of the above problems, the present invention provides a walking type detection device for surface cracks of a heating pipe network, comprising a limit assembly, a moving assembly is installed on the top of the limit assembly, and a detection assembly is transmission-connected to the moving assembly;

[0007] The detection assembly includes a sleeve, one end of a first compression spring is installed on an inner wall of one side of the sleeve, a sliding rod is installed on the other end of the first compression spring, and a pressure sensor is installed at the junction of the sliding rod and the first compression spring;

[0008] A third connecting plate is installed on one side wall of the sliding rod, a sleeve tube is installed on the bottom of the third connecting plate, a sliding tube is slidably connected in the sleeve tube, a fourth connecting plate is installed on the bottom of the sliding tube, and a needle tube detection structure is installed on the bottom of the fourth connecting plate;

[0009] The needle tube detection structure determines the crack depth by the sliding distance of the sliding tube during the movement in the crack, thereby improving the crack detection accuracy.

[0010] Furthermore, two groups of auxiliary components are symmetrically installed on the bottom of the detection component, and a scraper component is installed on one side wall.

[0011] Furthermore, the limiting assembly includes a first fixed plate, a sliding cavity is opened on the bottom of the first fixed plate, two groups of threaded rods are rotatably connected in the sliding cavity, and a group of sliding blocks are threadedly connected to each group of threaded rods.

[0012] Furthermore, a group of clamping rings are installed on the bottom of each group of sliding blocks, a first motor is installed on the inner wall of one side of the first fixing plate, and the output end of the first motor is transmission-connected to one group of threaded rods.

[0013] Furthermore, the moving component includes a first electric push rod, the bottom of which is mounted on the top of a first fixed plate, a second fixed plate is mounted on the output end of the first electric push rod, a second electric push rod is mounted on a side wall of the second fixed plate, and a third fixed plate is mounted on the output end of the second electric push rod.

[0014] Furthermore, a third electric push rod is installed on the bottom of the third fixed plate, a second motor is installed on the output end of the third electric push rod, and an electric slide is transmission-connected to the output end of the second motor.

[0015] Furthermore, the detection component also includes a first connecting plate, the top of which is transmission-connected to the output end of the electric slide, a second connecting plate is installed on the bottom of the first connecting plate, the sleeve is installed on a side wall of the second connecting plate, two groups of flow chambers are symmetrically opened on the outer wall of the needle tube detection structure, one end of two groups of second compression springs are symmetrically installed on the bottom edge of the third connecting plate, the other end of each group of second compression springs is installed on the top of the fourth connecting plate, a group of fourth electric push rods is installed on one side wall of each group of the third connecting plates, a first electromagnetic block is installed on the output end of the fourth electric push rod, a second electromagnetic block is installed on one side wall of the fourth connecting plate, and the first electromagnetic block is magnetically connected to the second electromagnetic block.

[0016] Furthermore, the auxiliary component includes a fourth fixed plate, the top of each group of the fourth fixed plates is installed on the bottom of the fourth connecting plate, a group of fifth electric push rods are installed on the side walls corresponding to the two groups of fourth fixed plates, a group of material storage boxes are installed on the output end of each group of the fifth electric push rods, and a group of extrusion head structures are connected to one side wall of each group of material storage boxes.

[0017] Furthermore, a group of constant temperature columns are installed in each group of the storage boxes, a group of sixth electric push rods are installed on the inner wall of one side of each group of the storage boxes, a group of limiting rings are installed on the output end of each group of the sixth electric push rods, the inner wall of each group of the limiting rings is slidably connected to the outer wall of the constant temperature column, and the outer wall is slidably connected to the inner wall of the storage box.

[0018] A method for a walking type detection device for surface cracks of a heating pipe network, the method comprising:

[0019] The needle tube detection structure is driven to move slowly on the outer wall of the pipeline. When it contacts the crack, the needle tube detection structure is driven to enter the crack.

[0020] During the movement in the crack, the depth of the crack is determined by the sliding distance of the sliding tube in the sleeve tube;

[0021] The needle tube detection structure moves transversely in width while being squeezed, and then drives the sliding rod to squeeze the first compression spring in the sleeve;

[0022] The first compression spring exerts a rebound force on the pressure sensor when sensing pressure.

[0023] The beneficial effects of the present invention are:

[0024] 1. The needle tube detection structure is driven to move slowly on the outer wall of the pipeline. When it contacts the crack, the second compression spring rebounds and drives the needle tube detection structure into the crack. Then, during the movement in the crack, the depth of the crack is judged by the sliding distance of the sliding tube in the sleeve tube, thereby improving the detection accuracy of the crack. The needle tube detection structure will move horizontally in width while being squeezed, thereby driving the sliding rod to squeeze the first compression spring in the sleeve tube. When the first compression spring senses the pressure, it exerts the rebound force on the pressure sensor, thereby improving the accuracy of the crack detection range and the walking detection effect.

[0025] 2. During the detection process, the fifth electric push rod is started to push the extrusion head structure to contact the flow cavity. Then, during the operation of the needle tube detection structure, the sixth electric push rod is started to push the limit ring. The limit ring begins to squeeze the quick-drying gel liquid placed in the storage box, so that the gel liquid flows into the crack after passing through the extrusion head structure and the flow cavity in turn, and then begins to condense, thereby improving the auxiliary effect of subsequent repairs.

[0026] 3. Start the electric slide to drive the needle tube detection structure to adjust the distance in parallel, and then start the second motor to drive the electric slide to rotate the angle, which improves the flexibility of the angle adjustment; during the movement of the needle tube detection structure, start the seventh electric push rod to drive the scraper plate to contact the outer wall of the pipe to scrape the overflowed gel, which improves the scraping effect while avoiding the influence of excess gel on subsequent repair work.

[0027] 4. The detection device is conveniently installed. Two sets of clamping rings are placed on the heating pipe. The first motor is started to drive the two sets of threaded rods to rotate. The two sets of threaded rods drive the two sets of sliding blocks to move toward each other in the sliding cavity while rotating. During the movement, the two sets of clamping rings are driven to clamp and limit the pipe, which improves the limit stability and the convenience of assembly and disassembly of the device.

[0028] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 It shows a schematic structural diagram of a walking type detection device according to an embodiment of the present invention;

[0031] Figure 2 A schematic cross-sectional view of a position limiting assembly according to an embodiment of the present invention is shown;

[0032] Figure 3 A schematic diagram of the structure of a mobile component according to an embodiment of the present invention is shown;

[0033] Figure 4 A schematic diagram of the structure of a detection component according to an embodiment of the present invention is shown;

[0034] Figure 5 A schematic cross-sectional view of a sleeve according to an embodiment of the present invention is shown;

[0035] Figure 6 A schematic diagram of the structure of an auxiliary component according to an embodiment of the present invention is shown;

[0036] Figure 7 A schematic cross-sectional view of a material storage box according to an embodiment of the present invention is shown;

[0037] Figure 8 A schematic structural diagram of a scraper assembly according to an embodiment of the present invention is shown.

[0038] In the figure: 1. Limiting assembly; 101. First fixed plate; 102. Threaded rod; 103. Sliding cavity; 104. Sliding block; 105. Clamping ring; 106. First motor; 2. Moving assembly; 201. First electric push rod; 202. Second fixed plate; 203. Second electric push rod; 204. Third fixed plate; 205. Third electric push rod; 206. Second motor; 207. Electric slide; 3. Detection assembly; 301. First connecting plate; 302. Second connecting plate; 303. Socket; 304. First compression spring; 305. Sliding rod; 306. Pressure sensor; 307. Third Connecting plate; 308, sleeve tube; 309, sliding tube; 310, fourth connecting plate; 311, needle tube detection structure; 312, second compression spring; 313, fourth electric push rod; 314, first electromagnetic block; 315, second electromagnetic block; 316, flow chamber; 4, auxiliary component; 401, fourth fixed plate; 402, fifth electric push rod; 403, storage box; 404, constant temperature column; 405, sixth electric push rod; 406, limit ring; 407, extruder head structure; 5, scraper component; 501, fifth fixed plate; 502, seventh electric push rod; 503, sixth fixed plate; 504, scraper plate. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] like Figure 1 As shown, an embodiment of the present invention provides a walking type detection device for surface cracks of a heating pipe network, comprising a limit component 1, a moving component 2 is installed on the top of the limit component 1, a detection component 3 is transmission-connected to the moving component 2, two groups of auxiliary components 4 are symmetrically installed on the bottom of the detection component 3, and a scraper component 5 is installed on one side wall.

[0041] like Figure 2As shown, the limit assembly 1 includes a first fixed plate 101, a sliding cavity 103 is opened on the bottom of the first fixed plate 101, two groups of threaded rods 102 are rotatably connected in the sliding cavity 103, a partition plate is connected between the two groups of the threaded rods 102, the two groups of the threaded rods 102 have opposite thread directions, and the central axes are located on the same straight line, each group of the threaded rods 102 is threadedly connected to a group of sliding blocks 104, each group of the sliding blocks 104 is slidably connected in the sliding cavity 103, and a group of clamping rings 105 are installed on the bottom of each group of the sliding blocks 104, a first motor 106 is installed on the inner wall of one side of the first fixed plate 101, and the output end of the first motor 106 is transmission-connected to one of the groups of threaded rods 102.

[0042] First, the detection device is conveniently installed. The two groups of clamping rings 105 are placed on the heating pipe. The first motor 106 is started to drive the two groups of threaded rods 102 to rotate. While the two groups of threaded rods 102 are rotating, they also drive the two groups of sliding blocks 104 to move towards each other in the sliding cavity 103. During the movement, the two groups of clamping rings 105 are driven to clamp and limit the pipe, which improves the limit stability and the convenience of assembly and disassembly of the device.

[0043] like Figure 3 As shown, the moving component 2 includes a first electric push rod 201, the bottom of the first electric push rod 201 is installed on the top of the first fixed plate 101, a second fixed plate 202 is installed on the output end of the first electric push rod 201, a second electric push rod 203 is installed on a side wall of the second fixed plate 202, a third fixed plate 204 is installed on the output end of the second electric push rod 203, a third electric push rod 205 is installed on the bottom of the third fixed plate 204, a second motor 206 is installed on the output end of the third electric push rod 205, and an electric slide 207 is transmission-connected to the output end of the second motor 206.

[0044] When adjusting the angle, the electric slide 207 is started to drive the needle tube detection structure 311 to adjust the distance in parallel, and then the second motor 206 is started to drive the electric slide 207 to rotate the angle, thereby improving the flexibility of the angle adjustment.

[0045] like Figure 4 and Figure 5As shown, the detection component 3 includes a first connecting plate 301, the top of the first connecting plate 301 is transmission-connected to the output end of the electric slide 207, a second connecting plate 302 is installed on the bottom of the first connecting plate 301, a sleeve 303 is installed on one side wall of the second connecting plate 302, one end of a first compression spring 304 is installed on the inner wall of one side of the sleeve 303, a sliding rod 305 is installed on the other end of the first compression spring 304, the sliding rod 305 is slidably connected in the sleeve 303, a pressure sensor 306 is installed at the junction of the sliding rod 305 and the first compression spring 304, a third connecting plate 307 is installed on one side wall of the sliding rod 305, a sleeve tube 308 is installed on the bottom of the third connecting plate 307, and a sliding tube 308 is slidably connected in the sleeve tube 308. 9. A fourth connecting plate 310 is installed on the bottom of the sliding tube 309, a needle tube detection structure 311 is installed on the bottom of the fourth connecting plate 310, two groups of flow chambers 316 are symmetrically opened on the outer wall of the needle tube detection structure 311, one end of two groups of second compression springs 312 are symmetrically installed on the bottom edge of the third connecting plate 307, the other end of each group of the second compression springs 312 is installed on the top of the fourth connecting plate 310, a group of fourth electric push rods 313 are installed on one side wall of each group of the third connecting plates 307, a first electromagnetic block 314 is installed on the output end of the fourth electric push rod 313, a second electromagnetic block 315 is installed on one side wall of the fourth connecting plate 310, and the first electromagnetic block 314 is magnetically connected to the second electromagnetic block 315.

[0046] Before the detection work is carried out, the fourth electric push rod 313 is first started to drive the first electromagnetic block 314 to be magnetically connected with the second electromagnetic block 315, and then the fourth electric push rod 313 is started to drive the fourth connecting plate 310 connected with the second electromagnetic block 315 to rise. During the rising process of the fourth connecting plate 310, the sliding tube 309 is driven to slide in the sleeve tube 308 and squeeze the two sets of second compression springs 312. Then the first electric push rod 201 is started to adjust the height, and then the third electric push rod 205 is started to drive the needle tube detection structure 311 to contact the outer wall of the pipeline, and the first electromagnetic block 314 and the second electromagnetic block 315 are separated from the magnetic connection state. After the second compression spring 312 senses the disappearance of pressure, it starts to rebound and exerts the rebound force on the needle tube detection structure 311. Then the second electric push rod 201 is started to adjust the height. The movable push rod 203 drives the needle tube detection structure 311 to move slowly on the outer wall of the pipeline. When it contacts the crack, the second compression spring 312 rebounds immediately after feeling the pressure disappears, driving the needle tube detection structure 311 to enter the crack. Subsequently, during the movement in the crack, the depth of the crack is judged by the sliding distance of the sliding tube 309 in the sleeve tube 308. In order to improve the detection accuracy of the crack, when facing irregular cracks, the needle tube detection structure 311 will move horizontally in width while being squeezed, thereby driving the sliding rod 305 to squeeze the first compression spring 304 in the sleeve tube 303. When the first compression spring 304 feels the pressure, it exerts the rebound force on the pressure sensor 306, thereby improving the accuracy of the crack detection range and the walking detection effect.

[0047] like Figure 6 and Figure 7 As shown, the auxiliary component 4 includes a fourth fixed plate 401, the top of each group of the fourth fixed plates 401 is mounted on the bottom of the fourth connecting plate 310, a group of fifth electric push rods 402 are mounted on the corresponding side walls of the two groups of fourth fixed plates 401, a group of material storage boxes 403 are mounted on the output end of each group of the fifth electric push rods 402, a group of extrusion head structures 407 are connected to one side wall of each group of the material storage boxes 403, a group of constant temperature columns 404 are mounted in each group of the material storage boxes 403, a group of sixth electric push rods 405 are mounted on the inner wall of one side of each group of the material storage boxes 403, a group of limiting rings 406 are mounted on the output end of each group of the sixth electric push rods 405, the inner wall of each group of the limiting rings 406 is slidably connected to the outer wall of the constant temperature column 404, and the outer wall is slidably connected to the inner wall of the material storage box 403.

[0048] During the detection process, the fifth electric push rod 402 is started to push the extrusion head structure 407 to contact the flow chamber 316. Then, while the needle tube detection structure 311 is working, the sixth electric push rod 405 is started to push the limit ring 406. The limit ring 406 begins to squeeze the quick-drying gel liquid placed in the storage box 403, so that the gel liquid flows into the crack after passing through the extrusion head structure 407 and the flow chamber 316 in turn, and then begins to condense, thereby improving the auxiliary effect of subsequent repairs.

[0049] like Figure 8 As shown, the scraper assembly 5 includes a fifth fixed plate 501, one end of the fifth fixed plate 501 is installed on a side wall of the fourth connecting plate 310, a seventh electric push rod 502 is installed on the bottom of the fifth fixed plate 501, a sixth fixed plate 503 is installed on the output end of the seventh electric push rod 502, and a scraper plate 504 is installed on the bottom of the sixth fixed plate 503.

[0050] During the movement of the needle tube detection structure 311, the seventh electric push rod 502 is activated to drive the scraper plate 504 to contact the outer wall of the pipeline to scrape off the overflowed gel, thereby improving the scraping effect and preventing excess gel from affecting subsequent repair work.

[0051] The needle tube detection structure 311 is driven to move slowly on the outer wall of the pipeline. When it contacts the crack, the second compression spring 312 rebounds and drives the needle tube detection structure 311 to enter the crack. Subsequently, during the movement in the crack, the depth of the crack is judged by the sliding distance of the sliding tube 309 in the sleeve tube 308, thereby improving the detection accuracy of the crack; the needle tube detection structure 311 will move horizontally in width while being squeezed, thereby driving the sliding rod 305 to squeeze the first compression spring 304 in the sleeve tube 303. When the first compression spring 304 senses the pressure, it exerts the rebound force on the pressure sensor 306, thereby improving the accuracy of the crack detection range and the walking detection effect.

[0052] During the detection process, the fifth electric push rod 402 is started to push the extrusion head structure 407 to contact the flow chamber 316. Then, while the needle tube detection structure 311 is working, the sixth electric push rod 405 is started to push the limit ring 406. The limit ring 406 begins to squeeze the quick-drying gel liquid placed in the storage box 403, so that the gel liquid flows into the crack after passing through the extrusion head structure 407 and the flow chamber 316 in turn, and then begins to condense, thereby improving the auxiliary effect of subsequent repairs.

[0053] The electric slide 207 is started to drive the needle tube detection structure 311 to adjust the distance in parallel, and then the second motor 206 is started to drive the electric slide 207 to rotate the angle, thereby improving the flexibility of the angle adjustment; during the movement of the needle tube detection structure 311, the seventh electric push rod 502 is started to drive the scraper plate 504 to contact the outer wall of the pipe to scrape off the overflowed gel, thereby improving the scraping effect and avoiding the influence of excess gel on subsequent repair work.

[0054] The detection device can be conveniently installed by placing two groups of clamping rings 105 on the heating pipe, starting the first motor 106 to drive the two groups of threaded rods 102 to rotate, and the two groups of threaded rods 102 drive the two groups of sliding blocks 104 to move towards each other in the sliding cavity 103 while rotating. During the movement, the two groups of clamping rings 105 are driven to clamp and limit the pipe, thereby improving the stability of the limit and improving the convenience of assembly and disassembly of the device.

[0055] Based on the above-mentioned walking type detection device for surface cracks of a heating pipe network, an embodiment of the present invention further proposes a method for the walking type detection device for surface cracks of a heating pipe network. Exemplarily, the detection method includes:

[0056] Place two sets of clamping rings on the heating pipe, start the first motor to drive the two sets of threaded rods to rotate, and the two sets of threaded rods will drive the two sets of sliding blocks to move towards each other in the sliding cavity while rotating;

[0057] Starting the fourth electric push rod drives the first electromagnetic block to be magnetically connected with the second electromagnetic block, and then starting the fourth electric push rod drives the fourth connecting plate connected with the second electromagnetic block to rise;

[0058] The sliding tube is driven to slide in the sleeve tube, the two sets of second compression springs are squeezed, and then the first electric push rod is started to adjust the height;

[0059] The third electric push rod is started to drive the needle tube detection structure to contact the outer wall of the pipeline, and the magnetic connection state between the first electromagnetic block and the second electromagnetic block is broken;

[0060] The second compression spring rebounds after sensing the disappearance of the pressure, and exerts the rebound force on the needle tube detection structure;

[0061] The second electric push rod is started to drive the needle tube detection structure to move slowly on the outer wall of the pipeline. When it contacts the crack, the second compression spring rebounds immediately after the pressure disappears.

[0062] The needle tube detection structure is driven into the crack, and then the depth of the crack is determined by the sliding distance of the sliding tube in the sleeve tube during the movement in the crack;

[0063] The needle tube detection structure will move horizontally in width when being squeezed, thereby driving the sliding rod to squeeze the first compression spring in the sleeve tube. When the first compression spring senses pressure, it will exert a rebound force on the pressure sensor.

[0064] The electric slide is started to drive the needle tube detection structure to adjust the distance in parallel, and then the second motor is started to drive the electric slide to rotate the angle;

[0065] The fifth electric push rod is started to push the extrusion head structure to contact the flow chamber, and the sixth electric push rod is started to push the limit ring during the operation of the needle tube detection structure;

[0066] The limiting ring starts to squeeze the quick-drying gel liquid placed in the storage box, and the gel liquid flows into the crack after passing through the extruder head structure and the flow cavity in turn;

[0067] The seventh electric push rod is started to drive the scraper plate to contact the outer wall of the pipeline to scrape the overflowed gel.

[0068] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A walking type detection device for cracks on the surface of a heating pipe network, comprising a limiter assembly (1), characterized in that: A moving component (2) is installed on the top of the limiting component (1), and a detection component (3) is transmission-connected to the moving component (2); The detection assembly (3) comprises a sleeve (303), one end of a first compression spring (304) is mounted on an inner wall of one side of the sleeve (303), a sliding rod (305) is mounted on the other end of the first compression spring (304), and a pressure sensor (306) is mounted at the junction of the sliding rod (305) and the first compression spring (304); A third connecting plate (307) is installed on one side wall of the sliding rod (305), a sleeve tube (308) is installed on the bottom of the third connecting plate (307), a sliding tube (309) is slidably connected in the sleeve tube (308), a fourth connecting plate (310) is installed on the bottom of the sliding tube (309), and a needle tube detection structure (311) is installed on the bottom of the fourth connecting plate (310); During the movement of the needle tube detection structure (311) in the crack, the depth of the crack is determined by the sliding distance of the sliding tube (309), thereby improving the detection accuracy of the crack.

2. A walking type detection device for surface cracks of a heating pipe network according to claim 1, characterized in that: Two groups of auxiliary components (4) are symmetrically installed on the bottom of the detection component (3), and a scraper component (5) is installed on one side wall.

3. The walking type detection device for surface cracks of a heating pipe network according to claim 1 is characterized in that: The limiting assembly (1) comprises a first fixed plate (101), a sliding cavity (103) is provided on the bottom of the first fixed plate (101), two groups of threaded rods (102) are rotatably connected in the sliding cavity (103), and each group of threaded rods (102) is threadedly connected to a group of sliding blocks (104).

4. A walking type detection device for surface cracks of a heating pipe network according to claim 3, characterized in that: A group of clamping rings (105) are installed on the bottom of each group of sliding blocks (104), and a first motor (106) is installed on the inner wall of one side of the first fixed plate (101), and the output end of the first motor (106) is drivingly connected to one of the groups of threaded rods (102).

5. The walking type detection device for surface cracks of a heating pipe network according to claim 3 is characterized in that: The moving assembly (2) comprises a first electric push rod (201), the bottom of the first electric push rod (201) is mounted on the top of a first fixed plate (101), a second fixed plate (202) is mounted on the output end of the first electric push rod (201), a second electric push rod (203) is mounted on a side wall of the second fixed plate (202), and a third fixed plate (204) is mounted on the output end of the second electric push rod (203).

6. A walking type detection device for surface cracks of a heating pipe network according to claim 5, characterized in that: A third electric push rod (205) is installed on the bottom of the third fixed plate (204), a second motor (206) is installed on the output end of the third electric push rod (205), and an electric slide table (207) is transmission-connected to the output end of the second motor (206).

7. A walking type detection device for surface cracks of a heating pipe network according to claim 6, characterized in that: The detection assembly (3) further comprises a first connecting plate (301), the top of the first connecting plate (301) being transmission-connected to the output end of the electric slide (207), a second connecting plate (302) being mounted on the bottom of the first connecting plate (301), the sleeve (303) being mounted on a side wall of the second connecting plate (302), two groups of flow cavities (316) being symmetrically provided on the outer wall of the needle tube detection structure (311), and two groups of second connecting cavities (316) being symmetrically provided on the bottom edge of the third connecting plate (307). One end of the compression spring (312) and the other end of each group of the second compression spring (312) are mounted on the top of the fourth connecting plate (310), and a group of fourth electric push rods (313) are mounted on one side wall of each group of the third connecting plates (307), and a first electromagnetic block (314) is mounted on the output end of the fourth electric push rod (313), and a second electromagnetic block (315) is mounted on one side wall of the fourth connecting plate (310), and the first electromagnetic block (314) and the second electromagnetic block (315) are magnetically connected.

8. The walking type detection device for surface cracks of a heating pipe network according to claim 2 is characterized in that: The auxiliary component (4) comprises a fourth fixing plate (401), the top of each group of the fourth fixing plates (401) is mounted on the bottom of the fourth connecting plate (310), a group of fifth electric push rods (402) are mounted on the corresponding side walls of the two groups of the fourth fixing plates (401), a group of material storage boxes (403) are mounted on the output end of each group of the fifth electric push rods (402), and a group of extrusion head structures (407) are connected to one side wall of each group of the material storage boxes (403).

9. A walking type detection device for surface cracks of a heating pipe network according to claim 8, characterized in that: A set of thermostatic columns (404) are installed in each group of the material storage boxes (403), a set of sixth electric push rods (405) are installed on the inner wall of one side of each group of the material storage boxes (403), a set of limiting rings (406) are installed on the output end of each group of the sixth electric push rods (405), and the inner wall of each group of the limiting rings (406) is slidably connected to the outer wall of the thermostatic columns (404), and the outer wall is slidably connected to the inner wall of the material storage box (403).

10. A method for detecting surface cracks on a heating pipe network using a walking type detection device according to any one of claims 1 to 9, characterized in that: The method comprises: The needle tube detection structure is driven to move slowly on the outer wall of the pipeline. When it contacts the crack, the needle tube detection structure is driven to enter the crack. During the movement in the crack, the depth of the crack is determined by the sliding distance of the sliding tube in the sleeve tube; The needle tube detection structure moves transversely in width while being squeezed, and then drives the sliding rod to squeeze the first compression spring in the sleeve; The first compression spring exerts a rebound force on the pressure sensor when sensing pressure.

Images