Pipe seam type anchor rod body strength testing device

Abstract

The invention relates to the technical field of tube seam type anchor rod body strength testing, in particular to a tube seam type anchor rod body strength testing device.The tube seam type anchor rod body strength testing device comprises an auxiliary unit and a detection unit.A clamping piece is adjusted to clamp the outer wall of an anchor rod body, and a supporting piece is adjusted through a control piece to support the inner wall of the anchor rod body; the plate abutting piece is manually adjusted to make contact with the right end face of the supporting plate to support the annular sleeve plate, so that the testing device is rapidly aligned and fixed to the anchor rod body, it is ensured that the center axis of the threaded rod is aligned to the center axis of the anchor rod body, the accuracy of the detection result is ensured, it is ensured that the anchor rod body cannot be separated from the testing device through the anti-disengaging piece, and the testing efficiency is improved. And the baffle ring is not subjected to overlarge thrust, so that the situation that the baffle ring is separated from the anchor rod body in the testing process, so that the testing result is influenced and even detection accidents are caused is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of pipe seam type anchor rod body strength testing, in particular to a pipe seam type anchor rod body strength testing device. Background Art

[0002] The pipe-seam anchor is a new type of anchor for surrounding rock reinforcement with full-length anchoring. Its three-dimensional part is a high-strength steel pipe with a longitudinal slit. When installed in a borehole slightly smaller than the pipe diameter, it can immediately apply radial pressure to the hole wall and friction to prevent the surrounding rock from sliding down over the entire length. Combined with the supporting force of the anchor tray, the surrounding rock is placed in a three-dimensional stress state. Under the circumstances of blasting vibration and surrounding rock anchor displacement, the later anchoring force is significantly increased. When the surrounding rock undergoes significant displacement, the anchor does not lose its supporting resistance. In order to ensure its strength and stability, thereby ensuring construction safety and extending its service life, the pipe-seam anchor needs to be subjected to a tensile strength test.

[0003] When testing the tensile strength of traditional pipe-seam anchors, special pulling equipment is usually used to assist. During the test, the pulling equipment needs to be connected to the anchor, and then a gradually increasing tensile force is applied through the pulling equipment until the anchor is displaced or reaches a predetermined tensile force value. The relationship between the pulling force and the displacement is recorded to evaluate the bearing capacity of the anchor. The special pulling equipment can be fixed by a retaining ring on the anchor body. However, during the test, the welded retaining ring is very likely to be separated from the anchor body due to being subjected to force first, resulting in an inability to obtain a tensile strength result; it is also possible to directly weld the end of the anchor body to the metal screw, but the metal screw can only be used once and cannot be reused, and the test cost is high; it is also possible to clamp and fix the outside of the anchor body, which generally requires fixing with multiple bolts. The process is cumbersome, and this method makes the fixed part of the outside of the anchor body very likely to be deformed due to the extrusion force, resulting in inaccurate test results. In addition, the above methods cannot ensure that the central axis of the pulling equipment coincides with the central axis of the pipe-seam anchor, thereby affecting the test results. Summary of the invention

[0004] In view of the above problems, the embodiment of the present application provides a pipe seam anchor rod strength testing device to solve the technical problems in the related art that the central axis of the pulling device and the central axis of the pipe seam anchor cannot be ensured to coincide and the anchor rod is deformed due to external force, thereby affecting the test results. In order to achieve the above purpose, the embodiment of the present application provides the following technical solutions.

[0005] A pipe seam anchor rod body strength testing device according to an embodiment of the present application comprises an auxiliary unit and a detection unit, wherein the detection unit is arranged on the auxiliary unit and is used to detect the tensile strength of the anchor rod body; the auxiliary unit comprises a close-fitting circular plate, an annular sleeve plate is fixedly installed close to the left end of the circular plate, a circular plug column is fixedly installed close to the middle of the circular plate, a threaded rod is fixedly installed on the right end of the circular plug column, a clamping piece is arranged on the annular sleeve plate, a supporting piece is arranged on the circular plug column, a control piece is jointly arranged on the circular plug column and the close-fitting circular plate, a resisting piece is arranged on the left side of the annular sleeve plate, and an anti-slip piece is arranged on the clamping piece; the detection unit comprises an oil cylinder, an oil cylinder is sleeved on the threaded rod and is located close to the right side of the circular plate, a high-pressure oil pipe is fixedly connected to the lower end of the oil cylinder, a hand-controlled pressure pump is fixedly installed on the end of the high-pressure oil pipe, and a nut is threadedly connected on the threaded rod and is located one centimeter from the right side of the oil cylinder.

[0006] According to an embodiment of the present invention, the clamping member includes a threaded groove, a threaded groove is provided at the outer end of the annular sleeve, guide grooves are evenly provided on the upper circumference of the annular sleeve, movable columns are slidably connected in the guide grooves, and tight-fitting blocks are fixedly installed at the ends of the movable columns. A circular ring plate is threadedly connected to the outer end of the annular sleeve, and a fan-shaped groove with a triangular longitudinal section is provided in the middle of the circular ring plate. The inclined surface of the fan-shaped groove gradually faces the central axis of the circular ring plate from left to right, and the fan-shaped groove is slidably connected to the movable column.

[0007] According to an embodiment of the present invention, the support member includes an extension groove, and the circular plug column is evenly provided with extension grooves along its circumference, and an extension column is slidably connected in the extension groove, and a support block is fixedly installed at the end of the extension column, and a control handle is rotatably connected close to the circular plate, and a bevel gear is fixedly installed at the rear end of the control handle, and a truncated cone block is slidably connected to the middle of the circular plug column, and the inclined surface of the truncated cone block gradually moves away from the central axis of the circular plug column from left to right, and the extension column and the inclined surface of the truncated cone block are slidably connected.

[0008] According to an embodiment of the present invention, the control component includes a distance controlling screw, the middle part of the circular plug column is rotatably connected to the distance controlling screw, the right end of the distance controlling screw is fixedly installed with bevel gear 2, bevel gear 2 is meshed with bevel gear 1, and the distance controlling screw is threadedly connected to the truncated cone block.

[0009] According to an embodiment of the present invention, the stop plate comprises a stop screw, and the stop screws are symmetrically threaded on the upper and lower sides of the annular sleeve, a hexagonal block is fixedly installed on the left outer end of the stop screw, and a stop ball is fixedly installed on the left end of the stop screw.

[0010] According to an embodiment of the present invention, the size of the tight-fitting block is larger than that of the supporting block, the length of the tight-fitting block located at the groove of the tube-seam type anchor rod body is larger than the length of other tight-fitting blocks, the length of the supporting block located at the groove of the tube-seam type anchor rod body is larger than the length of other supporting blocks, and a groove matching with the corresponding tight-fitting block is provided in the middle of the supporting block located at the groove of the tube-seam type anchor rod body.

[0011] According to an embodiment of the present invention, the anti-slip component includes a fixing groove, and except for the close-fitting block located in the groove of the tube-seam type anchor rod body, the other close-fitting blocks are all provided with a fixing groove at the right end, and a cylindrical spring is fixedly installed in the fixing groove, a cylindrical rod is fixedly installed at the end of the cylindrical spring, a linkage rod is fixedly installed at the left end of the cylindrical rod, and a wedge block is fixedly installed at the end of the linkage rod, and the inclined surface of the wedge block gradually approaches one side of the central axis of the anchor rod body from left to right, except for the close-fitting block located in the groove of the tube-seam type anchor rod body, the other close-fitting blocks are slidably connected with a T-shaped pressure block toward one end of the central axis of the tube-seam type anchor rod body, and the pressure block is slidably connected to the corresponding wedge block.

[0012] It can be seen from the above technical solutions that the present invention has the following advantages:

[0013] 1. In the present invention, the clamping member is adjusted to clamp the outer wall of the anchor rod body, the supporting member is adjusted by the control member to support the inner wall of the anchor rod body, the abutment member is manually adjusted to contact the right end surface of the support plate, and the annular sleeve is supported, so that the test device can be quickly aligned and fixed with the anchor rod body, ensuring that the central axis of the threaded rod is aligned with the central axis of the anchor rod body, ensuring the accuracy of the test results, and ensuring that the anchor rod body and the test device will not be separated by the anti-separation member, and the retaining ring will not be subjected to excessive thrust, thereby avoiding the retaining ring from being separated from the anchor rod body during the test, thereby affecting the test results.

[0014] 2. In the present invention, according to the inclination angle of the anchor rod body and the distance between the anchor rod body and the pallet, the hexagonal blocks are manually rotated respectively so that the abutment balls are closely attached to the pallets respectively, thereby supporting the detection device and increasing its stability.

[0015] 3. In the present invention, during the pulling process, the cylindrical rod, the linkage rod and the wedge block are used in cooperation to convert the resistance force in the left and right directions into the extrusion force in the up and down directions of the pressure block, ensuring that the anchor rod body and the test device will not be separated, and the retaining ring will not be subjected to excessive thrust, thereby avoiding the retaining ring and the anchor rod body from being separated during the test, affecting the test results or even causing a detection accident.

[0016] In addition to the technical problems solved by the embodiments of the present application described above, the technical features that constitute the technical scheme, and the beneficial effects brought about by the technical features of the technical scheme, other technical problems that can be solved by a tube seam type anchor rod strength testing device provided by the embodiments of the present application, other technical features included in the technical scheme, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0018] Figure 1 A schematic diagram of a main-view stereoscopic structure provided according to an embodiment of the present invention is shown.

[0019] Figure 2 A schematic diagram of a front three-dimensional structure of a cut-away annular sleeve provided in accordance with an embodiment of the present invention is shown.

[0020] Figure 3 A schematic diagram of a main cross-sectional plane structure provided according to an embodiment of the present invention is shown.

[0021] Figure 4 A schematic diagram of a main viewing plane structure provided according to an embodiment of the present invention is shown.

[0022] Figure 5 Shows Figure 4 AA section view.

[0023] Figure 6 Shows Figure 5 A local enlarged view of location N.

[0024] The above drawings include the following reference numerals:

[0025] 1. Auxiliary unit; 11. Closely attached circular plate; 12. Annular sleeve plate; 13. Circular plug column; 14. Threaded rod; 15. Clamping piece; 151. Threaded groove; 152. Guide groove; 153. Moving column; 154. Closely attached block; 155. Circular ring plate; 156. Fan-shaped groove; 16. Support member; 161. Extending groove; 162. Extending column; 163. Support block; 164. Control handle; 165. Bevel gear 1; 166. Round table block ; 17. Control part; 171. Control screw; 172. Bevel gear 2; 18. Plate member; 181. Positioning screw; 182. Hexagonal block; 183. Plate member ball; 19. Anti-slip member; 191. Fixing groove; 192. Cylindrical spring; 193. Cylindrical rod; 194. Linkage rod; 195. Wedge block; 196. Pressure block; 2. Detection unit; 21. Cylinder; 22. High-pressure oil pipe; 23. Manual pressure pump; 24. Nut. DETAILED DESCRIPTION

[0026] To make the above objects, features, and advantages of the present invention more apparent and understandable, the following detailed description of the specific embodiments of the present invention will be provided in conjunction with the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0027] Refer to Figure 1 , Figure 2 and Figure 3 , a pipe-slot type anchor rod body strength testing device, comprising an auxiliary unit 1 and a detection unit 2. The detection unit 2 is arranged on the auxiliary unit 1 for detecting the tensile strength of the anchor rod body; the auxiliary unit 1 includes a close-fitting circular plate 11, an annular sleeve plate 12 is fixedly installed at the left end of the close-fitting circular plate 11, a circular plug 13 is fixedly installed in the middle of the close-fitting circular plate 11, a threaded rod 14 is fixedly installed at the right end of the circular plug 13, a clamping member 15 is arranged on the annular sleeve plate 12, a support member 16 is arranged on the circular plug 13, a control member 17 is jointly arranged on the circular plug 13 and the close-fitting circular plate 11, a backing plate member 18 is arranged on the left side of the annular sleeve plate 12, and an anti-detachment member 19 is arranged on the clamping member 15; the detection unit 2 includes an oil cylinder 21, the oil cylinder 21 is sleeved on the threaded rod 14 and located on the right side of the close-fitting circular plate 11, a high-pressure oil pipe 22 is fixedly connected to the lower end of the oil cylinder 21, a hand-controlled pressure pump 23 is fixedly installed at the end of the high-pressure oil pipe 22, and a nut 24 is threadedly connected to the threaded rod 14 and located 1 centimeter to the right of the oil cylinder 21.

[0028] First, use a pneumatic drill to drill an anchor hole with a diameter smaller than the diameter of the anchor rod body on the coal rock mass, then put the tray into the anchor rod body, and then use a pneumatic hammer to drive the anchor rod body into the anchor hole, so that the support plate is in close contact with the outer wall of the coal rock body, and then grout is injected into the anchor rod body and the support plate. After the cement slurry solidifies, the anchor rod body and the support plate are fixedly connected to the coal rock mass. At this time, the circular plug 13 is inserted into the anchor rod body until it is in close contact with the left end of the circular plate 11 and the right end of the anchor rod body. At this time, adjust the clamping member 15 to clamp the outer wall of the anchor rod body, adjust the support member 16 through the control member 17 to support the inner wall of the anchor rod body, manually adjust the abutment member 18 to make it contact with the right end surface of the support plate, and tighten the annular sleeve plate 1 2 for support, at this time, the oil cylinder 21 is inserted into the threaded rod 14, and then the nut 24 is threadedly connected one centimeter to the right of the oil cylinder 21, and the manual pressure pump 23 is connected to the oil cylinder 21 through the high-pressure oil pipe 22. The manual pressure pump 23 is repeatedly pressed to adjust the pressure of the oil cylinder 21 until the extended end of the oil cylinder 21 contacts the nut 24. At this time, the pressure data displayed by the manual pressure pump 23 is recorded, which is the tensile strength of the anchor rod body. The anti-detachment member 19 ensures that the anchor rod body and the test device will not be separated, and the retaining ring will not be subjected to excessive thrust, thereby avoiding the retaining ring and the anchor rod body from being separated during the test, affecting the test results or even causing a detection accident.

[0029] See also Figure 2 , Figure 5 and Figure 6 The clamping member 15 includes a thread groove 151, a thread groove 151 is provided at the outer end of the annular sleeve 12, and guide grooves 152 are uniformly provided on the annular sleeve 12 along its circumference, and moving columns 153 are slidably connected in the guide grooves 152, and a close-fitting block 154 is fixedly installed at the end of the moving column 153, and a circular plate 155 is threadedly connected to the outer end of the annular sleeve 12, and a fan-shaped groove 156 with a triangular longitudinal section is provided in the middle of the circular plate 155, and the inclined surface of the fan-shaped groove 156 gradually faces the central axis of the circular plate 155 from left to right, and the fan-shaped groove 156 is slidably connected to the moving column 153.

[0030] See also Figure 5 and Figure 6 The support member 16 includes an extension groove 161. The circular plug column 13 is evenly provided with extension grooves 161 along its circumference. An extension column 162 is slidably connected in the extension groove 161. A support block 163 is fixedly installed at the end of the extension column 162. A control handle 164 is rotatably connected to the circular plate 11. A bevel gear 165 is fixedly installed at the rear end of the control handle 164. A truncated cone block 166 is slidably connected to the middle part of the circular plug column 13. The inclined surface of the truncated cone block 166 gradually moves away from the central axis of the circular plug column 13 from left to right. The extension column 162 is slidably connected to the inclined surface of the truncated cone block 166.

[0031] See also Figure 3 and Figure 5 The control member 17 includes a distance control screw 171, the middle part of the circular plug column 13 is rotatably connected with the distance control screw 171, the right end of the distance control screw 171 is fixedly installed with a bevel gear 172, the bevel gear 172 is meshed with the bevel gear 1 165, and the distance control screw 171 is threadedly connected with the truncated cone block 166.

[0032] See also Figure 3 The stop plate 18 includes a stop screw 181, and the stop screws 181 are symmetrically threaded on the upper and lower sides of the annular sleeve 12. A hexagonal block 182 is fixedly installed on the left outer end of the stop screw 181, and a stop ball 183 is fixedly installed on the left end of the stop screw 181.

[0033] See also Figure 5 The size of the close-fitting block 154 is larger than that of the supporting block 163. The length of the close-fitting block 154 located at the groove of the tube-seam type anchor rod body is larger than the length of other close-fitting blocks 154. The length of the supporting block 163 located at the groove of the tube-seam type anchor rod body is larger than the length of other supporting blocks 163. A groove matching the corresponding close-fitting block 154 is provided in the middle of the supporting block 163 located at the groove of the tube-seam type anchor rod body.

[0034] See also Figure 6 The anti-slip component 19 includes a fixing groove 191. Except for the close-fitting block 154 located at the groove of the tube-seam type anchor rod body, the other close-fitting blocks 154 are all provided with a fixing groove 191 at the right end. A cylindrical spring 192 is fixedly installed in the fixing groove 191. A cylindrical rod 193 is fixedly installed at the end of the cylindrical spring 192. A linkage rod 194 is fixedly installed at the left end of the cylindrical rod 193. A wedge block 195 is fixedly installed at the end of the linkage rod 194. The inclined surface of the wedge block 195 gradually approaches one side of the central axis of the anchor rod body from left to right. Except for the close-fitting block 154 located at the groove of the tube-seam type anchor rod body, the other close-fitting blocks 154 are slidably connected with a T-shaped pressure block 196 at one end toward the central axis of the tube-seam type anchor rod body, and the pressure block 196 is slidably connected to the corresponding wedge block 195.

[0035] The working principle of the present invention is as follows: first, an anchor hole with a diameter smaller than that of the anchor rod body is drilled on the coal rock mass with a pneumatic drill, and then the tray is inserted into the anchor rod body, and then the anchor rod body is driven into the anchor hole with a pneumatic hammer, so that the tray is in close contact with the outer wall of the coal rock body, and then grouting is injected into the anchor rod body and the inside of the tray. After the cement slurry solidifies, the anchor rod body and the tray are fixedly connected to the coal rock mass. At this time, the circular plug column 13 is inserted into the anchor rod body until it is in close contact with the left end of the circular plate 11 and the right end of the anchor rod body. At this time, the circular ring plate 155 is manually rotated to move to the left, so that the fan-shaped groove 156 on the circular ring plate 155 squeezes the movable column 153, so that the movable column 153 moves toward one side of the central axis of the anchor rod body, until the close contact block 154 at the end of the movable column 153 is in close contact with the outer wall of the anchor rod body.

[0036] At this time, the control handle 164 is turned to drive the bevel gear 165 to rotate. Driven by the bevel gear 165, the bevel gear 2 172 rotates accordingly, driving the distance control screw 171 to rotate, thereby driving the truncated cone block 166 to move to the left. Driven by the truncated cone block 166, the extended column 162 drives the support block 163 to move toward the side away from the central axis of the anchor rod body until the support block 163 is in close contact with the inner wall of the anchor rod body, and the support block 163 located in the groove of the pipe-seam anchor rod body is inserted into the corresponding close-fitting block 154. At this time, according to the inclination angle of the anchor rod body and the distance between the anchor rod body and the pallet, the hexagonal block 182 is manually rotated respectively, thereby driving the stop screw 181 to rotate and move to the left, until the stop balls 183 on the stop screws 181 on the upper and lower sides are in close contact with the pallet respectively.

[0037] At this time, the oil cylinder 21 is inserted into the threaded rod 14, and then the nut 24 is threadedly connected one centimeter to the right of the oil cylinder 21. The manual pressure pump 23 is connected to the oil cylinder 21 through the high-pressure oil pipe 22. The manual pressure pump 23 is repeatedly pressed to adjust the pressure of the oil cylinder 21 until the extended end of the oil cylinder 21 contacts the nut 24. At this time, the pressure data displayed by the manual pressure pump 23 is recorded. This data is the tensile strength of the anchor rod body. During the pulling process, if the support block 163 and the close block 154 move to the right due to the pulling force, The cylindrical rod 193 is first blocked by the retaining ring. The cylindrical rod 193 is squeezed and the cylindrical spring 192 is compressed, thereby driving the linkage rod 194 to move to the left. The linkage rod 194 drives the wedge block 195 to move to the left, driving the pressure block 196 to extend out of the close-fitting block 154, so that the pressure block 196 is further close to the anchor rod body, ensuring that the anchor rod body and the test device will not be separated, and the retaining ring will not be subjected to excessive thrust, thereby avoiding the retaining ring and the anchor rod body from being separated during the test, affecting the test results or even causing a detection accident.

[0038] In the description of the present invention, it is necessary to understand that the terms "center", "middle", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "end", "axial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0039] In addition, the terms "first", "second", "number one", "number two", "one", "two" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In the description of the present invention, "multiple" means at least two, such as two, three, etc., unless otherwise clearly and specifically limited.

[0040] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, a sliding connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A pipe seam anchor rod strength testing device, characterized in that , comprising an auxiliary unit (1) and a detection unit (2), wherein the detection unit (2) is arranged on the auxiliary unit (1) and is used to detect the tensile strength of the anchor rod body; The auxiliary unit (1) comprises a close-fitting circular plate (11), an annular sleeve plate (12) is fixedly mounted on the left end of the close-fitting circular plate (11), a circular plug post (13) is fixedly mounted on the middle of the close-fitting circular plate (11), a threaded rod (14) is fixedly mounted on the right end of the circular plug post (13), a clamping member (15) is arranged on the annular sleeve plate (12), a supporting member (16) is arranged on the circular plug post (13), a control member (17) is arranged on the circular plug post (13) and the close-fitting circular plate (11), a plate-butting member (18) is arranged on the left side of the annular sleeve plate (12), and an anti-slip member (19) is arranged on the clamping member (15); The detection unit (2) comprises an oil cylinder (21), the oil cylinder (21) is sleeved on the threaded rod (14) and is located close to the right side of the circular plate (11), the lower end of the oil cylinder (21) is fixedly connected to a high-pressure oil pipe (22), the end of the high-pressure oil pipe (22) is fixedly installed with a hand-controlled pressure pump (23), and a nut (24) is threadedly connected on the threaded rod (14) and is located one centimeter to the right side of the oil cylinder (21).

2. A pipe seam anchor rod strength testing device according to claim 1, characterized in that: The clamping member (15) comprises a thread groove (151), the outer end of the annular sleeve (12) is provided with a thread groove (151), the annular sleeve (12) is provided with guide grooves (152) uniformly along its circumference, the guide grooves (152) are slidably connected with movable columns (153), the ends of the movable columns (153) are fixedly installed with close-fitting blocks (154), the outer end of the annular sleeve (12) is threadedly connected with a circular plate (155), the middle part of the circular plate (155) is provided with a fan-shaped groove (156) with a triangular longitudinal section, the inclined surface of the fan-shaped groove (156) gradually faces the central axis of the circular plate (155) from left to right, and the fan-shaped groove (156) is slidably connected with the movable column (153).

3. The device for testing the strength of a pipe-seam anchor rod according to claim 1, characterized in that: The support member (16) comprises a projection groove (161), the circular plug column (13) is evenly provided with projection grooves (161) along its circumference, a projection column (162) is slidably connected in the projection groove (161), a support block (163) is fixedly installed at the end of the projection column (162), a control handle (164) is rotatably connected to the circular plate (11), a bevel gear (165) is fixedly installed at the rear end of the control handle (164), a truncated cone block (166) is slidably connected to the middle of the circular plug column (13), the inclined surface of the truncated cone block (166) gradually moves away from the central axis of the circular plug column (13) from left to right, and the projection column (162) and the inclined surface of the truncated cone block (166) are slidably connected.

4. A pipe seam anchor rod strength testing device according to claim 1, characterized in that: The control member (17) comprises a distance control screw (171), the middle part of the circular plug column (13) is rotatably connected with the distance control screw (171), the right end of the distance control screw (171) is fixedly mounted with a second bevel gear (172), the second bevel gear (172) is meshed with the first bevel gear (165), and the distance control screw (171) is threadedly connected with the truncated cone block (166).

5. The pipe seam anchor rod strength testing device according to claim 1, characterized in that: The stop plate (18) comprises a stop screw (181), the stop screws (181) are symmetrically threadedly connected to the upper and lower sides of the annular sleeve (12), a hexagonal block (182) is fixedly mounted on the left outer end of the stop screw (181), and a stop ball (183) is fixedly mounted on the left end of the stop screw (181).

6. A pipe seam anchor rod strength testing device according to claim 2, characterized in that: The size of the close-fitting block (154) is larger than the size of the supporting block (163); the length of the close-fitting block (154) located at the groove of the tube-seam type anchor rod body is larger than the length of other close-fitting blocks (154); the length of the supporting block (163) located at the groove of the tube-seam type anchor rod body is larger than the length of other supporting blocks (163); and a groove matching the corresponding close-fitting block (154) is provided in the middle of the supporting block (163) located at the groove of the tube-seam type anchor rod body.

7. A pipe seam anchor rod strength testing device according to claim 2, characterized in that: The anti-dropping member (19) comprises a fixing groove (191). Except for the close-fitting block (154) located at the groove of the tube-seam type anchor rod body, the other close-fitting blocks (154) are all provided with a fixing groove (191) at the right end. A cylindrical spring (192) is fixedly installed in the fixing groove (191). A cylindrical rod (193) is fixedly installed at the end of the cylindrical spring (192). A linkage rod (194) is fixedly installed at the left end of the cylindrical rod (193). A wedge block (195) is fixedly installed at the end of the linkage rod (194). The inclined surface of the wedge block (195) gradually approaches one side of the central axis of the anchor rod body from left to right. Except for the close-fitting block (154) located at the groove of the tube-seam type anchor rod body, the other close-fitting blocks (154) are all slidably connected with a T-shaped pressure block (196) at one end facing the central axis of the tube-seam type anchor rod body. The pressure block (196) is slidably connected to the corresponding wedge block (195).

8. A pipe seam anchor rod strength testing device according to claim 7, characterized in that: After the close-fitting block (154) extends out of the annular sleeve plate (12), the cylindrical rod (193) contacts the left end of the retaining ring on the anchor rod body when the cylindrical spring (192) is not stressed.

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