Anchor rod drawing force testing device

Abstract

The invention relates to the technical field of anchor rod tensile capacity testing, in particular to an anchor rod drawing force testing device which is characterized in that a stretching mechanism and a lower clamping mechanism are arranged on an operation table, an upper clamping mechanism is arranged above the lower clamping mechanism, and a positioning mechanism is arranged on the upper clamping mechanism; through cooperation of the stretching mechanism and the positioning mechanism, axial testing tension can be applied to the pipe seam type anchor rod, and eccentric oblique tension at different angles can also be applied to the pipe seam type anchor rod; according to the invention, the tensile mechanism is matched with the lower clamping mechanism and the upper clamping mechanism, so that tensile performance tests in different force application directions can be simultaneously carried out on a plurality of pipe seam type anchor rods through a single driving source in the same test equipment; through cooperation of the lower clamping mechanism and the upper clamping mechanism, the pipe seam type anchor rods with different diameters can be accurately clamped and positioned, and the problem that the tensile property of the pipe seam type anchor rods is affected due to clamping deformation can be solved.

Description

Technical Field

[0001] The invention relates to the technical field of anchor rod tensile strength testing, in particular to an anchor rod pull-out force testing device. Background Art

[0002] Anchor rod is a commonly used reinforcement and support device in geotechnical engineering, which is mainly used to enhance the stability of rock or soil. The pull-out force test of anchor rod is an important means to evaluate the support quality and tensile performance of anchor rod; pipe-seam anchor rod is a special type of anchor rod, whose main feature is that through holes and gaps are opened on the anchor rod to achieve better grouting effect and higher anchoring force, and one end of the pipe-seam anchor rod is usually welded with a hoop for reinforcement; in the prior art, when evaluating the support quality and tensile performance of pipe-seam anchor rod, the pipe-seam anchor rod is usually first subjected to a pull-out force test in the laboratory to obtain the theoretical tensile performance of the pipe-seam anchor rod, thereby providing theoretical data with reference value for on-site testing of the actual anchoring capacity of the pipe-seam anchor rod.

[0003] However, the existing laboratory testing methods for the tensile performance of pipe-seam anchor rods have the following problems: 1. Since pipe-seam anchor rods are generally only subjected to tension in the axial direction during normal operation, usually only the tensile performance of pipe-seam anchor rods under axial tension is tested in the laboratory. However, when the pipe-seam anchor rods are in a more complex engineering environment, or when the pipe-seam anchor rods are subjected to complex loads in multiple directions such as earthquake loads, they will be subjected to tension in the eccentric tilting direction, resulting in the inability of existing laboratory testing methods to fully simulate all the stress conditions of the pipe-seam anchor rods during operation, thereby resulting in low integrity and accuracy of the test data; 2. Existing laboratory testing equipment is generally unable to test multiple pipe-seam anchor rods at the same time, resulting in the overall testing steps for testing the tensile performance of multiple groups of pipe-seam anchor rods being cumbersome and inefficient, and it is impossible to intuitively compare the differences in the tensile performance of each group of pipe-seam anchor rods under tension in different directions. Summary of the invention

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an anchor pull-out force testing device, comprising an operating table, a stretching mechanism, a lower clamping mechanism, an upper clamping mechanism and a positioning mechanism, wherein a stretching mechanism and a lower clamping mechanism are arranged on the upper side of the operating table, an upper clamping mechanism is arranged above the lower clamping mechanism, and a positioning mechanism is arranged on the upper side of the upper clamping mechanism.

[0005] The lower clamping mechanism includes a lower clamping assembly, an adjusting assembly and a driving assembly; a plurality of groups of lower clamping assemblies are evenly arranged on the upper side of the operating table, each of the lower clamping assemblies is provided with an adjusting assembly, and a driving assembly is arranged on the operating table at the front side of the lower clamping assembly.

[0006] The upper clamping mechanism includes an upper clamping assembly, a second driving assembly and a docking assembly; an upper clamping assembly is arranged above the lower clamping assembly, a second driving assembly is arranged on the operating table in front of the upper clamping assembly, and a docking assembly is arranged on the second driving assembly.

[0007] The positioning mechanism includes an adjusting component 2 and a positioning component; the adjusting component 2 is arranged on the upper clamping component, and the positioning component is arranged above the adjusting component 2.

[0008] Preferably, the stretching mechanism includes a driving frame, a hydraulic cylinder and a connecting plate; the driving frame is fixedly arranged on the upper side of the operating table, a hydraulic cylinder is fixedly arranged on the upper surface of the driving frame, a connecting plate is fixedly arranged on the telescopic end of the hydraulic cylinder, and a guide rod slidably connected to the driving frame is fixedly arranged on the upper surface of the connecting plate symmetrically.

[0009] Preferably, the lower clamping assembly comprises a fixing plate 1, a fixing member 1, a clamping member 1 and an annular groove; a fixing plate 1 is fixedly provided on the upper side of the operating table via four connecting rods 1, a through hole penetrating from top to bottom is provided on the fixing plate 1, a fixing member 1 is fixedly provided on the rear end of the upper surface of the fixing plate 1, a clamping member 1 is slidably provided on the front side of the fixing member 1 via two left-right symmetrical guide rods, and an annular groove is provided on the opposite sides of the clamping member 1 and the fixing member 1.

[0010] Preferably, the adjustment component 1 includes a U-shaped frame, a screw 1, a knob 1 and a multi-section internal support column; the U-shaped frame is fixedly provided on the lower surface of the fixed plate 1, a screw 1 is threadedly connected to the horizontal section of the U-shaped frame, a knob 1 is fixedly provided at the lower end of the screw 1, and a multi-section internal support column slidably connected to the through hole is fixedly provided at the upper end of the screw 1, and the multi-section internal support column is composed of a plurality of equal-length cylinders whose diameters increase proportionally from top to bottom.

[0011] Preferably, the driving component 1 includes a fixing frame 1, a hydraulic cylinder 2, a connecting plate 2 and a driving rod; a fixing frame 1 is fixedly provided on the upper side of the operating table, a hydraulic cylinder 2 is fixedly provided on the front side of the fixing frame 1, a connecting plate 2 is fixedly provided on the telescopic end of the hydraulic cylinder 2, a guide rod 3 slidably connected to the fixing frame 1 is symmetrically fixedly provided on the front side of the connecting plate 2, and a plurality of driving rods fixedly connected to the clamping members in a one-to-one correspondence are evenly fixedly provided on the rear side of the connecting plate 2.

[0012] Preferably, the upper clamping assembly comprises a fixing plate 2, a screw 2, an inner support member, a fixing member 2, a clamping member 2, a threaded seat, a screw 3 and a docking column; a fixing plate 2 which moves up and down is arranged above the fixing plate 1, a screw 2 is fixedly arranged on the lower surface of the fixing plate 2, a cylindrical inner support member is threadedly connected to the surface of the screw 2, a fixing member 2 is fixedly arranged on the rear end of the lower surface of the fixing plate 2, a clamping member 2 is slidably arranged on the front side of the fixing member 2 through a left-right symmetrical guide rod 4, a threaded seat is fixedly arranged on the front end of the lower surface of the fixing plate 2, a screw 3 is threadedly connected on the threaded seat, the rear end of the screw 3 is rotatably connected to the front side of the clamping member 2, a docking column is fixedly arranged on the front end of the screw 3, and a rectangular groove is opened in the docking column.

[0013] Preferably, the driving component 2 includes a fixing frame 2, a motor, a sprocket 1, a positioning seat, a coupling and a sprocket 2; a fixing frame 2 is fixedly provided on the upper side of the operating table, a motor is fixedly provided on the right end of the rear side of the fixing frame 2, a sprocket 1 is fixedly provided on the driving end of the motor, a positioning seat is fixedly provided symmetrically on the rear side of the fixing frame 2, a latch is inserted at the rear end of the positioning seat, a plurality of couplings corresponding to the fixing plate 2 are evenly rotated on the fixing frame 2, a sprocket 2 is fixedly provided at the front end of the coupling, and the sprocket 2 and the sprocket 1 are connected by a chain transmission.

[0014] Preferably, the docking assembly includes a rectangular spring rod, a rectangular sliding sleeve, a connecting plate three and a docking seat; the rear end of the connecting shaft is fixedly provided with a rectangular spring rod, the surface of the rectangular spring rod is elastically and slidingly provided with a rectangular sliding sleeve that is plugged into and matched with the rectangular groove, the front end of the rectangular sliding sleeve is jointly sleeved with a connecting plate three, the front end of the rectangular sliding sleeve is rotatably connected to the connecting plate three, and the rear side of the connecting plate three is symmetrically fixed with a docking seat that corresponds one-to-one with the positioning seat.

[0015] Preferably, the second adjusting component comprises a transmission rod, a sliding shaft, a linkage plate, a linear groove, an adjusting seat, a screw rod four, a knob two, an adjusting slider and a driving shaft; a transmission rod is rotatably arranged on the upper side of the fixed plate two through a support, and a sliding shaft is symmetrically fixedly arranged on the upper end of the transmission rod front and back, and a linkage plate is fixedly arranged on the front side of the lower end of the transmission rod through a rod member one rotatably connected to the support, and a linear groove is opened on the linkage plate, and an adjusting seat is symmetrically fixedly arranged on the front end of the fixed plate two, and a guide rod five is symmetrically fixedly arranged between the upper ends of the adjusting seats front and back, and a screw rod four is rotatably arranged between the upper ends of the adjusting seats, and a knob two is fixedly arranged on the right end of the screw rod four, and an adjusting slider slidably connected to the guide rod five is threadedly connected on the surface of the screw rod four, and a driving shaft slidably matched with the linear groove is fixedly arranged on the rear side of the adjusting slider.

[0016] Preferably, the positioning assembly includes a positioning plate, an arc groove, a docking hole, a connecting plate four, a docking plate, a screw hole and a bolt; a positioning plate that moves up and down is symmetrically arranged at the upper end of the transmission rod, and the positioning plates are provided with arc grooves that slide with the corresponding sliding shafts, and a plurality of docking holes are evenly arranged on the positioning plates on the lower side of the arc grooves; a connecting plate four is fixedly arranged on the upper side of the positioning plates, and the connecting plate four is fixedly connected to the lower surface of the connecting plate one through a rod member three that is symmetrical on the upper side; a docking plate is fixedly arranged on the end of the sliding shaft away from the transmission rod, and a screw hole that cooperates with the docking hole for positioning is arranged at the lower end of the docking plate, and a bolt is threadedly connected to the inner thread of the screw hole.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention can not only apply axial test tension to the pipe-seam type anchor rod by cooperating with the stretching mechanism and the positioning mechanism, but also apply eccentric oblique tension of different angles to the pipe-seam type anchor rod, thereby simulating the stress conditions of the pipe-seam type anchor rod in various complex working environments, thereby greatly improving the integrity and accuracy of the test data, and at the same time providing more complete and more valuable theoretical data for the field test of the pipe-seam type anchor rod.

[0019] 2. The present invention uses a stretching mechanism in conjunction with a lower clamping mechanism and an upper clamping mechanism to achieve tensile performance testing of multiple pipe seam anchors in different force directions using a single driving source in the same testing equipment, thereby greatly simplifying the operating steps of the overall test of multiple groups of pipe seam anchors, improving the overall testing efficiency, and being able to intuitively compare the differences in tensile performance of pipe seam anchors in different force directions.

[0020] 3. The present invention cooperates with the lower clamping mechanism and the upper clamping mechanism, which can not only realize the precise clamping and positioning of pipe seam anchors of different diameters, but also avoid the problem of the pipe seam anchors being affected by their tensile properties due to clamping deformation. At the same time, by adjusting the clamping method of the lower end of the pipe seam anchor, the welding strength of the hoop at the lower end of the pipe seam anchor can also be tested, thereby greatly improving the application range of the test equipment and reducing the overall test cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention.

[0022] Figure 2 It is a schematic diagram of the lower clamping mechanism structure.

[0023] Figure 3 Schematic diagram of the lower clamping assembly structure.

[0024] Figure 4 for Figure 3 Enlarged schematic diagram at point A in the middle.

[0025] Figure 5 It is a schematic diagram of the upper clamping mechanism structure.

[0026] Figure 6 for Figure 5 Enlarged schematic diagram of point B in the middle.

[0027] Figure 7 It is a schematic diagram of the local structure of the positioning mechanism.

[0028] Figure 8 This is a schematic diagram of the structure of the second regulating component.

[0029] Fig. 9 Schematic diagram of the upper clamping assembly structure.

[0030] In the figure: 1, operating table; 2, stretching mechanism; 21, driving frame; 22, hydraulic cylinder 1; 23, connecting plate 1; 3, lower clamping mechanism; 31, lower clamping assembly; 311, fixing plate 1; 312, fixing part 1; 313, clamping part 1; 314, annular groove; 32, adjusting assembly 1; 321, U-shaped frame; 322, screw 1; 323, knob 1; 324, multi-section inner support column; 33, driving assembly 1; 331, fixing frame 1; 332, hydraulic cylinder 2; 333, connecting plate 2; 334, driving rod; 4, upper clamping mechanism; 41, upper clamping assembly; 411, fixing plate 2; 412, screw 2; 413, inner support part; 414, fixing part 2; 415, clamping part 2; 416, threaded seat; 417, screw 3; 41 8. Docking column; 42. Drive component 2; 421. Fixed frame 2; 422. Motor; 423. Sprocket 1; 424. Positioning seat; 425. Connecting shaft; 426. Sprocket 2; 43. Docking component; 431. Rectangular spring rod; 432. Rectangular sliding sleeve; 433. Connecting plate 3; 434. Docking seat; 5. Positioning mechanism; 51. Adjusting component 2; 511. Transmission rod; 512. Sliding shaft; 513. Linking plate; 514. Linear groove; 515. Adjusting seat; 516. Screw rod 4; 517. Knob 2; 518. Adjusting slider; 519. Drive shaft; 52. Positioning component; 521. Positioning plate; 522. Arc groove; 523. Docking hole; 524. Connecting plate 4; 525. Docking plate; 526. Screw hole; 527. Bolt. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0032] See also Figure 1 A device for testing the pull-out force of an anchor rod comprises an operating platform 1, a stretching mechanism 2, a lower clamping mechanism 3, an upper clamping mechanism 4 and a positioning mechanism 5, wherein the stretching mechanism 2 and the lower clamping mechanism 3 are arranged on the upper side of the operating platform 1, the upper clamping mechanism 4 is arranged above the lower clamping mechanism 3, and the upper side of the upper clamping mechanism 4 is arranged with a positioning mechanism 5; the stretching mechanism 2 comprises a driving frame 21, a hydraulic cylinder 22 and a connecting plate 23; the driving frame 21 is fixedly arranged on the upper side of the operating platform 1, the upper surface of the driving frame 21 is fixedly arranged with a hydraulic cylinder 22, the telescopic end of the hydraulic cylinder 22 is fixedly arranged with a connecting plate 23, and the upper surface of the connecting plate 23 is symmetrically fixed with a guide rod 1 which is slidably connected to the driving frame 21.

[0033] See also Figure 1 and Figure 2 The lower clamping mechanism 3 includes a lower clamping assembly 31, an adjusting assembly 32 and a driving assembly 33; a plurality of groups of lower clamping assemblies 31 are evenly arranged on the upper side of the operating table 1, and an adjusting assembly 32 is arranged on each of the lower clamping assemblies 31; a driving assembly 33 is arranged on the operating table 1 in front of the lower clamping assembly 31.

[0034] See also Figure 3 and Figure 4 The lower clamping assembly 31 includes a fixing plate 311, a fixing piece 312, a clamping piece 313 and an annular groove 314; a fixing plate 311 is fixedly provided on the upper side of the operating table 1 through four connecting rods, and a through hole penetrating from top to bottom is provided on the fixing plate 311, a fixing piece 312 is fixedly provided on the rear end of the upper surface of the fixing plate 311, and a clamping piece 313 is slidably provided on the front side of the fixing piece 312 through two left-right symmetrical guide rods, and an annular groove 314 is provided on the opposite side of the clamping piece 313 and the fixing piece 312.

[0035] See also Figure 3 The adjustment component 32 includes a U-shaped frame 321, a screw 322, a knob 323 and a multi-section inner support column 324; the U-shaped frame 321 is fixedly arranged on the lower surface of the fixed plate 311, and a screw 322 is threadedly connected to the horizontal section of the U-shaped frame 321, and a knob 323 is fixedly arranged at the lower end of the screw 322, and a multi-section inner support column 324 slidably connected to the through hole is fixedly arranged at the upper end of the screw 322, and the multi-section inner support column 324 is composed of a plurality of equal-length cylinders whose diameters increase proportionally from top to bottom.

[0036] See also Figure 2 and Figure 3The driving assembly 33 includes a fixing frame 331, a hydraulic cylinder 332, a connecting plate 333 and a driving rod 334; a fixing frame 331 is fixedly arranged on the upper side of the operating platform 1, a hydraulic cylinder 332 is fixedly arranged on the front side of the fixing frame 331, a connecting plate 333 is fixedly arranged on the telescopic end of the hydraulic cylinder 332, a guide rod 3 slidably connected to the fixing frame 331 is symmetrically fixedly arranged on the front side of the connecting plate 333, and a plurality of driving rods 334 fixedly connected to the clamping member 313 in a one-to-one correspondence are evenly fixedly arranged on the rear side of the connecting plate 333.

[0037] When the lower end of the pipe seam anchor is to be clamped and fixed, the hoop at the lower end of the pipe seam anchor is first engaged with the annular groove 314 on the corresponding fixing piece 312, and then the knob 323 is turned to make the screw 322 drive the multi-section inner support column 324 to move upward section by section through the spiral transmission with the U-shaped frame 321, until a section of the cylinder on the multi-section inner support column 324 that matches the inner diameter of the pipe seam anchor is completely docked and inserted into the pipe seam anchor, so that the lower end of the pipe seam anchor can be internally supported by the section of the cylinder, and then the hydraulic cylinder 2 332 is driven The connecting plate 2 333 and the driving rod 334 move backwards, and the corresponding clamping piece 1 313 moves backwards synchronously therewith until the lower end of the pipe seam anchor is stably clamped and fixed by cooperating with the fixing piece 1 312. This clamping method can not only adapt to pipe seam anchors of different diameters, but also prevent the lower end of the pipe seam anchor from being deformed due to the clamping force during the clamping process through the internal support of the multi-section inner support column 324, thereby avoiding the problem of the pipe seam anchor being deformed due to the clamping force and affecting its tensile performance, thereby ensuring the stability and accuracy of the test results.

[0038] When the lower ends of multiple pipe seam anchor rods with the same diameter need to be clamped and fixed, the lower ends of different pipe seam anchor rods with the same diameter can be docked and positioned with the corresponding fixing piece 312 and the multi-section inner support column 324 respectively, and then all the driving rods 334 and the clamping piece 313 are synchronously driven to move backward by the hydraulic cylinder 2 332 until the lower ends of the corresponding pipe seam anchor rods are synchronously clamped and fixed. This operation method not only improves the overall clamping efficiency of the pipe seam anchor rods, but also provides conditions for the subsequent simultaneous testing of the tensile properties of multiple different pipe seam anchor rods.

[0039] See also Figure 5 The upper clamping mechanism 4 includes an upper clamping component 41, a second driving component 42 and a docking component 43; the upper clamping component 41 is arranged above the lower clamping component 31, and a second driving component 42 is arranged on the operating table 1 in front of the upper clamping component 41, and a docking component 43 is arranged on the second driving component 42.

[0040] See also Fig. 9The upper clamping assembly 41 includes a fixing plate 411, a screw 412, an inner support 413, a fixing member 414, a clamping member 415, a threaded seat 416, a screw 417 and a docking column 418; a fixing plate 411 that moves up and down is arranged above the fixing plate 1 311, a screw 412 is fixedly arranged on the lower surface of the fixing plate 411, a cylindrical inner support 413 is threadedly connected to the surface of the screw 412, and the lower surface of the fixing plate 411 A fixing piece 414 is fixedly provided at the rear end, a clamping piece 415 is slidably provided at the front side of the fixing piece 414 through a left-right symmetrical guide rod 4, a threaded seat 416 is fixedly provided at the front end of the lower surface of the fixing plate 411, a screw rod 3 417 is threadedly connected to the threaded seat 416, the rear end of the screw rod 3 417 is rotatably connected to the front side of the clamping piece 415, a docking column 418 is fixedly provided at the front end of the screw rod 3 417, and a rectangular groove is provided in the docking column 418.

[0041] See also Figure 5 , Figure 6 and Fig. 9 The driving component 42 includes a fixing frame 421, a motor 422, a sprocket 423, a positioning seat 424, a connecting shaft 425 and a sprocket 426; a fixing frame 421 is fixedly provided on the upper side of the operating table 1, a motor 422 is fixedly provided on the right end of the rear side of the fixing frame 421, a sprocket 423 is fixedly provided on the driving end of the motor 422, a positioning seat 424 is fixedly provided on the rear side of the fixing frame 421 symmetrically, a latch is inserted at the rear end of the positioning seat 424, a plurality of connecting shafts 425 corresponding to the fixing plate 411 are evenly rotated on the fixing frame 421, a sprocket 426 is fixedly provided at the front end of the connecting shaft 425, and the sprocket 426 and the sprocket 423 are connected by chain transmission.

[0042] See also Figure 5 , Figure 6 and Fig. 9 The docking assembly 43 includes a rectangular spring rod 431, a rectangular sliding sleeve 432, a connecting plate three 433 and a docking seat 434; the rear end of the connecting shaft 425 is fixedly provided with a rectangular spring rod 431, the surface of the rectangular spring rod 431 is elastically and slidingly provided with a rectangular sliding sleeve 432 that is plugged into the rectangular groove, the front end of the rectangular sliding sleeve 432 is jointly sleeved with a connecting plate three 433, the front end of the rectangular sliding sleeve 432 is rotatably connected to the connecting plate three 433, and the rear side of the connecting plate three 433 is symmetrically fixed with a docking seat 434 that corresponds to the positioning seat 424 one by one.

[0043] When the upper end of the pipe seam anchor is to be clamped and fixed, the inner support piece 413 corresponding to the inner diameter of the pipe seam anchor is first fixed to the surface of the screw rod 412 by threaded connection, and then the upper end of the pipe seam anchor is sleeved on the surface of the inner support piece 413, and then the motor 422 drives the sprocket wheel 423 to rotate, and the sprocket wheel 423 then drives all the sprocket wheels 426 and the connecting shaft 425 to rotate synchronously through the chain transmission, and the connecting shaft 425 then drives the corresponding rectangular spring rod 431 and the rectangular sleeve 432 rotate synchronously. Since the rectangular sleeve 432 is plugged into the rectangular groove on the corresponding docking column 418, the corresponding docking column 418 and the screw rod 3 417 can be driven to rotate synchronously through the rectangular sleeve 432. The screw rod 3 417 then drives the clamping member 2 415 to move backward continuously through the spiral transmission with the threaded seat 416 until it cooperates with the fixing member 2 414 to stably clamp and fix the upper end of the corresponding pipe seam anchor rod. Finally, the connecting plate 3 433 The cam 432 is engaged with the support rod 434 and the support rod 436 is engaged with the support rod 437. The cam 432 is engaged with the support rod 438 and the support rod 439 is engaged with the support rod 440.

[0044] See also Figure 1 and Figure 5 The positioning mechanism 5 includes an adjusting component 51 and a positioning component 52 ; the adjusting component 51 is disposed on the fixing plate 411 , and the positioning component 52 is disposed above the adjusting component 51 .

[0045] See also Figure 5 , Figure 7 and Figure 8The adjustment component 2 51 includes a transmission rod 511, a sliding shaft 512, a linkage plate 513, a linear groove 514, an adjustment seat 515, a screw rod 4 516, a knob 2 517, an adjustment slider 518 and a drive shaft 519; a transmission rod 511 is rotatably provided on the upper side of the fixed plate 2 411 through a support, a tension sensor (not shown in the figure) is provided in the transmission rod 511, a sliding shaft 512 is symmetrically fixedly provided on the upper end of the transmission rod 511, and a linkage plate 513 is fixedly provided on the front side of the lower end of the transmission rod 511 through a rod member 1 rotatably connected to the support, A straight groove 514 is provided on the linkage plate 513, an adjustment seat 515 is symmetrically fixed to the front end of the fixed plate 2 411, guide rods 5 are symmetrically fixed between the upper ends of the adjustment seats 515, screw rods 4 516 are rotatably provided between the upper ends of the adjustment seats 515, a knob 2 517 is fixed to the right end of the screw rod 4 516, an adjustment slider 518 slidably connected to the guide rod 5 is threadedly connected to the surface of the screw rod 4 516, and a drive shaft 519 slidably matched with the straight groove 514 is fixed to the rear side of the adjustment slider 518.

[0046] See also Figure 5 and Figure 7 The positioning assembly 52 includes a positioning plate 521, an arc groove 522, a docking hole 523, a connecting plate four 524, a docking plate 525, a screw hole 526 and a bolt 527; the upper end of the transmission rod 511 is symmetrically provided with a positioning plate 521 that moves up and down, and the positioning plate 521 is provided with an arc groove 522 that slides with the corresponding sliding shaft 512, and a plurality of docking holes 523 are evenly provided on the positioning plate 521 at the lower side of the arc groove 522, and a connecting plate four 524 is fixedly provided on the upper side of the positioning plate 521, and the connecting plate four 524 is fixedly connected to the lower surface of the connecting plate one 23 through a rod three symmetrically on the upper side, and the sliding shaft 512 is fixedly provided with a docking plate 525 at one end away from the transmission rod 511, and a screw hole 526 is provided at the lower end of the docking plate 525 for positioning with the docking hole 523, and a bolt 527 is connected to the inner thread of the screw hole 526.

[0047] When the tensile performance test is to be performed on a plurality of pipe seam anchor rods of the same diameter, the plurality of pipe seam anchor rods of the same diameter are first clamped and fixed on the test device synchronously by the cooperation of the fixing piece 1 312 and the clamping piece 1 313, and the fixing piece 2 414 and the clamping piece 2 415, and then the knobs 2 517 corresponding to the different pipe seam anchor rods are respectively rotated, so that the corresponding screw rod 4 516 drives the adjusting slider 518 to move a specific distance along the guide rod 5 through the spiral transmission, and the adjusting slider 518 then drives the lower end of the linkage plate 513 and the transmission rod 511 to rotate around the support at a specific angle through the sliding cooperation with the corresponding linear groove 514 through the driving shaft 519, and the transmission rod 511 then drives the sliding shaft 512 and the docking plate 5 25 slides along the arc groove 522 for a specific distance until the screw hole 526 on the docking plate 525 is aligned with the docking hole 523 at the corresponding angle, and the bolt 527 is installed into the aligned screw hole 526 and the docking hole 523, so that the transmission rod 511 is stably positioned at the required specific angle. This operation method can not only realize the application of axial tension to the pipe-seam anchor rod, but also apply eccentric oblique tension of different angles to different pipe-seam anchor rods, thereby completely simulating the stress conditions of the pipe-seam anchor rod in various complex working environments, thereby greatly improving the integrity and accuracy of the test data, and providing more complete and more valuable theoretical data for the field test of the pipe-seam anchor rod.

[0048] Finally, the hydraulic cylinder 22 drives the connecting plate 23 and all the connecting plates 524 to move upward continuously and synchronously, and all the positioning plates 521 drive the corresponding transmission rods 511 to move upward synchronously, so that the transmission rods 511 apply tension in different directions to the upper ends of the corresponding pipe-seam type anchor rods until all the tested pipe-seam type anchor rods are broken, so that the tensile performance data of the pipe-seam type anchor rods under different force directions can be measured by the tension sensor. This operation method can not only use the single driving source of the hydraulic cylinder 22 in the test device to simultaneously test the tensile performance of multiple pipe-seam type anchor rods in different force directions, thereby greatly simplifying the operating steps of the overall test of multiple groups of pipe-seam type anchor rods, improving the overall test efficiency, and can intuitively compare the differences in the tensile performance of the pipe-seam type anchor rods under different force directions.

[0049] When the welding strength of the hoop at the lower end of the pipe seam anchor is to be tested, the hoop at the lower end of the pipe seam anchor is firstly docked with the annular groove 314 on the fixing piece 312, and then the lower end of the pipe seam anchor is internally supported by the cylinder of corresponding diameter on the multi-section inner support column 324, and then the clamping piece 313 is moved backward to make the annular groove 314 on the clamping piece 313 and the hoop at the lower end of the pipe seam anchor be clamped and positioned, so that the fixing piece 312 cooperates with the clamping piece 313 to fix the hoop while not completely clamping the lower end of the pipe seam anchor, and then the fixing piece 414 is connected with the clamping piece 414 to fix the hoop. The holding piece 2 415 cooperates to clamp and fix the upper end of the pipe seam anchor rod, and finally the corresponding transmission rod 511 is driven by the hydraulic cylinder 1 22 to move upward along the axial direction of the pipe seam anchor rod, so that the welding point between the pipe seam anchor rod and the hoop ring is continuously stressed until the hoop ring is separated from the lower end of the pipe seam anchor rod. The welding strength data of the pipe seam anchor rod and the hoop ring can be measured by the tension sensor in the transmission rod 511. This operation method can realize the testing of the welding strength of the hoop ring at the lower end of the pipe seam anchor rod, thereby greatly improving the application scope of the testing equipment and reducing the cost of the overall related testing of the pipe seam anchor rod.

[0050] 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. An anchor pull-out force testing device, comprising an operating table (1), a stretching mechanism (2), a lower clamping mechanism (3), an upper clamping mechanism (4) and a positioning mechanism (5), characterized in that: A stretching mechanism (2) and a lower clamping mechanism (3) are arranged on the upper side of the operating table (1); an upper clamping mechanism (4) is arranged above the lower clamping mechanism (3); and a positioning mechanism (5) is arranged on the upper side of the upper clamping mechanism (4); The lower clamping mechanism (3) comprises a lower clamping assembly (31), an adjusting assembly (32) and a driving assembly (33); a plurality of groups of lower clamping assemblies (31) are evenly arranged on the upper side of the operating table (1), and each of the lower clamping assemblies (31) is provided with an adjusting assembly (32); and a driving assembly (33) is arranged on the operating table (1) at the front side of the lower clamping assembly (31); The upper clamping mechanism (4) comprises an upper clamping assembly (41), a second driving assembly (42) and a docking assembly (43); the upper clamping assembly (41) is arranged above the lower clamping assembly (31), the second driving assembly (42) is arranged on the operating table (1) at the front side of the upper clamping assembly (41), and the docking assembly (43) is arranged on the second driving assembly (42); The positioning mechanism (5) comprises a second adjustment component (51) and a positioning component (52); the second adjustment component (51) is arranged on the upper clamping component (41), and the positioning component (52) is arranged above the second adjustment component (51).

2. The anchor pull-out force testing device according to claim 1, characterized in that: The stretching mechanism (2) comprises a driving frame (21), a hydraulic cylinder (22) and a connecting plate (23); the driving frame (21) is fixedly arranged on the upper side of the operating table (1), the hydraulic cylinder (22) is fixedly arranged on the upper surface of the driving frame (21), the connecting plate (23) is fixedly arranged at the telescopic end of the hydraulic cylinder (22), and the upper surface of the connecting plate (23) is symmetrically fixedly arranged with a guide rod (21) slidably connected to the driving frame (21).

3. The anchor pull-out force testing device according to claim 1, characterized in that: The lower clamping assembly (31) comprises a fixing plate (311), a fixing member (312), a clamping member (313) and an annular groove (314); the fixing plate (311) is fixedly arranged on the upper side of the operating table (1) via four connecting rods; a through hole extending vertically therethrough is provided on the fixing plate (311); a fixing member (312) is fixedly arranged at the rear end of the upper surface of the fixing plate (311); a clamping member (313) is slidably arranged on the front side of the fixing member (312) via two guide rods symmetrically disposed on the left and right; and an annular groove (314) is provided on the opposite sides of the clamping member (313) and the fixing member (312).

4. The anchor pull-out force testing device according to claim 3, characterized in that: The adjustment component (32) comprises a U-shaped frame (321), a screw (322), a knob (323) and a multi-section inner support column (324); the U-shaped frame (321) is fixedly arranged on the lower surface of the fixing plate (311); a screw (322) is threadedly connected to the horizontal section of the U-shaped frame (321); a knob (323) is fixedly arranged at the lower end of the screw (322); a multi-section inner support column (324) slidably connected to the through hole is fixedly arranged at the upper end of the screw (322); the multi-section inner support column (324) is composed of a plurality of equal-length cylinders whose diameters increase in proportion from top to bottom.

5. The anchor pull-out force testing device according to claim 3, characterized in that: The driving assembly 1 (33) comprises a fixing frame 1 (331), a hydraulic cylinder 2 (332), a connecting plate 2 (333) and a driving rod (334); the fixing frame 1 (331) is fixedly arranged on the upper side of the operating table (1); the hydraulic cylinder 2 (332) is fixedly arranged on the front side of the fixing frame 1 (331); the connecting plate 2 (333) is fixedly arranged on the telescopic end of the hydraulic cylinder 2 (332); the guide rod 3 slidably connected to the fixing frame 1 (331) is fixedly arranged on the front side of the connecting plate 2 (333) in a symmetrical manner; and a plurality of driving rods (334) fixedly connected to the clamping member 1 (313) in a one-to-one correspondence are evenly fixedly arranged on the rear side of the connecting plate 2 (333).

6. The anchor pull-out force testing device according to claim 3, characterized in that: The upper clamping assembly (41) comprises a second fixing plate (411), a second screw (412), an inner support member (413), a second fixing member (414), a second clamping member (415), a threaded seat (416), a third screw (417) and a docking column (418); a second fixing plate (411) movable up and down is arranged above the first fixing plate (311), a second screw (412) is fixedly arranged on the lower surface of the second fixing plate (411), a cylindrical inner support member (413) is threadedly connected to the surface of the second screw (412), and the second fixing plate (411) is provided with a plurality of screws. A fixing part 2 (414) is fixedly provided at the rear end of the lower surface, and a clamping part 2 (415) is slidably provided on the front side of the fixing part 2 (414) through a left-right symmetrical guide rod 4, and a threaded seat (416) is fixedly provided at the front end of the lower surface of the fixing plate 2 (411), and a screw rod 3 (417) is threadedly connected to the threaded seat (416), and the rear end of the screw rod 3 (417) is rotatably connected to the front side of the clamping part 2 (415), and a docking column (418) is fixedly provided at the front end of the screw rod 3 (417), and a rectangular groove is opened in the docking column (418).

7. The anchor pull-out force testing device according to claim 6, characterized in that: The driving assembly 2 (42) comprises a fixing frame 2 (421), a motor (422), a sprocket 1 (423), a positioning seat (424), a connecting shaft (425) and a sprocket 2 (426); the fixing frame 2 (421) is fixedly arranged on the upper side of the operating table (1); the motor (422) is fixedly arranged at the right end of the rear side of the fixing frame 2 (421); the driving end of the motor (422) is fixedly arranged with a sprocket 1 (423); the positioning seat (424) is fixedly arranged on the rear side of the fixing frame 2 (421) in a symmetrical manner; a latch is inserted at the rear end of the positioning seat (424); a plurality of connecting shafts (425) corresponding to the fixing plate 2 (411) are evenly rotatably arranged on the fixing frame 2 (421); the front ends of the connecting shafts (425) are fixedly arranged with sprockets 2 (426); the sprockets 2 (426) and the sprockets 1 (423) are connected by a chain transmission.

8. The anchor pull-out force testing device according to claim 7, characterized in that: The docking assembly (43) comprises a rectangular spring rod (431), a rectangular sliding sleeve (432), a connecting plate three (433) and a docking seat (434); the rear end of the connecting shaft (425) is fixedly provided with a rectangular spring rod (431); the surface of the rectangular spring rod (431) is elastically and slidably provided with a rectangular sliding sleeve (432) plugged into and matched with the rectangular groove; the front end of the rectangular sliding sleeve (432) is jointly sleeved with the connecting plate three (433); the front end of the rectangular sliding sleeve (432) is rotatably connected to the connecting plate three (433); the rear side of the connecting plate three (433) is symmetrically and fixedly provided with a docking seat (434) that is matched and positioned one-to-one with the positioning seat (424).

9. The anchor pull-out force testing device according to claim 6, characterized in that: The second adjustment component (51) comprises a transmission rod (511), a sliding shaft (512), a linkage plate (513), a linear groove (514), an adjustment seat (515), a screw rod (516), a knob (517), an adjustment slider (518) and a drive shaft (519); the upper side of the second fixed plate (411) is provided with a transmission rod (511) rotatably arranged through a support, the upper end of the transmission rod (511) is symmetrically fixed with a sliding shaft (512) front and rear, the front side of the lower end of the transmission rod (511) is fixed with a linkage plate (513) through a rod member rotatably connected to the support, and the linkage plate (513) is opened on the upper side. A straight groove (514) is provided, an adjustment seat (515) is fixedly arranged at the front end of the fixing plate 2 (411) in a symmetrical manner, a guide rod 5 is fixedly arranged between the upper ends of the adjustment seats (515) in a symmetrical manner, a screw rod 4 (516) is rotatably arranged between the upper ends of the adjustment seats (515), a knob 2 (517) is fixedly arranged at the right end of the screw rod 4 (516), an adjustment slider (518) slidably connected to the guide rod 5 is threadedly connected to the surface of the screw rod 4 (516), and a driving shaft (519) slidably matched with the straight groove (514) is fixedly arranged on the rear side of the adjustment slider (518).

10. The anchor pull-out force testing device according to claim 9, characterized in that: The positioning assembly (52) comprises a positioning plate (521), an arc groove (522), a docking hole (523), a connecting plate (524), a docking plate (525), a screw hole (526) and a bolt (527); the upper end of the transmission rod (511) is symmetrically provided with a positioning plate (521) that moves up and down, and the positioning plate (521) is provided with an arc groove (522) that is slidably matched with the corresponding sliding shaft (512), and the positioning plate (521) is evenly provided with a plurality of arc grooves (522) located below the arc groove (522). A docking hole (523) is formed on the upper side of the positioning plate (521), and a connecting plate (524) is fixedly arranged thereon. The connecting plate (524) is fixedly connected to the lower surface of the connecting plate (23) through a rod (524) symmetrically arranged on the upper side. A docking plate (525) is fixedly arranged on one end of the sliding shaft (512) away from the transmission rod (511). A screw hole (526) is formed at the lower end of the docking plate (525) for cooperating with the docking hole (523) for positioning. A bolt (527) is connected to the inner thread of the screw hole (526).

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