A kind of anti-floating anchor pull-out test device

Abstract

The present invention discloses an anti-floating anchor pull-out test device and test method, and relates to the field of geotechnical engineering equipment. The device comprises a crawler vehicle; a frame of the crawler vehicle is provided with a locking assembly for locking a plurality of anchor bars, a pulling assembly for providing pulling force, and a measuring assembly for measuring the pull-out resistance of the anchor bars; a through hole for accommodating the anchor bars is provided at the center of the frame, and a through groove for the anchor bars to pass through and communicated with the through hole is also provided on the frame; the locking assembly comprises an anchoring cylinder and an anchoring wedge that cooperates with the anchoring cylinder to lock the anchor bars; the present invention loads and moves the equipment for performing the pull-out test on the anchor bars by the crawler vehicle, and does not need to carry the test device manually, thereby effectively saving manpower; the locking process of the anchor bars is realized by the anchoring cylinder and the anchoring wedge, and the locking process is simple and practical, and the entire locking process can be automated, which reduces the training cost of workers and has high working efficiency.

Description

Technical Field

[0001] The present invention relates to the field of geotechnical engineering equipment, and particularly relates to an anti-pulling test device for anti-floating anchor rods. Background Art

[0002] An anti-floating anchor rod is an anchor rod installed in a formation to resist the upward buoyancy force generated by groundwater on a building (structure). In urban construction, the development and utilization of underground space continue to go deeper, and anti-floating anchor rods have been widely used in underground projects. Since the embedded section of the anchor rod is hidden underground, the properties of the rock and soil mass are complex and highly discrete, which reduces the reliability of calculating the anti-pulling bearing capacity of the anti-floating anchor rod. Therefore, the "Technical Specification for Anti-floating Anchor Rods" (YB / T 4659-2018) stipulates that anti-pulling tests need to be carried out before design and after construction of anti-floating anchor rods to determine the bearing capacity of the anti-floating anchor rods.

[0003] In the prior art, the methods for detecting the anti-pulling of anchor rods are extensive, primitive, and have a low degree of automation. The testing equipment is manually carried, resulting in a large labor intensity; the connection of the anchor rod steel bars before the test can only be completed by skilled workers, which has high requirements for personnel and low operation efficiency; the alignment of the testing equipment and the reading of data are manually operated, which is prone to human errors and results in poor detection accuracy. Summary of the Invention

[0004] In view of the above deficiencies of the prior art, the present invention provides an anti-pulling test device for anti-floating anchor rods that saves manpower and is convenient for testing.

[0005] To achieve the above invention purpose, the technical solution adopted by the present invention is as follows:

[0006] Provide an anti-pulling test device for anti-floating anchor rods, which includes a crawler vehicle; a clamping component for clamping a plurality of anchor rod bars, a pulling component for providing a pulling force, and a measuring component for measuring the anti-pulling ability of the anchor rod bars are arranged on the frame of the crawler vehicle;

[0007] A through hole for accommodating the anchor rod bar is arranged at the center of the frame, and a through groove for the anchor rod bar to pass through and communicating with the through hole is also arranged on the frame;

[0008] The clamping component includes an anchoring cylinder and an anchoring wedge for cooperating with the anchoring cylinder to clamp the anchor rod bar; a plurality of bar clamping holes for a plurality of anchor rod bars to pass through are arranged between the anchoring wedge and the anchoring cylinder; the anchoring cylinder is vertically arranged directly above the through hole, a portal frame is arranged on the frame, and the anchoring wedge is connected to the portal frame through a clamping hydraulic rod and is vertically located directly above the anchoring cylinder;

[0009] The drawing component includes an anchoring bottom beam and several vertically arranged jacks. The several jacks are symmetrically arranged at both ends of the anchoring bottom beam. The top end of the jack is fixedly connected to the anchoring bottom beam, and the bottom end of the jack is fixedly connected to the vehicle frame. An opening is provided on the anchoring bottom beam for mating connection with the anchoring cylinder.

[0010] The measuring component includes a displacement sensor for measuring the displacement length of the anchoring cylinder and a pressure sensor for measuring the acting force of the jack on the anchoring bottom beam.

[0011] Furthermore, it further includes a pre-limiting component. The pre-limiting component includes a limiting plate group. The limiting plate group is located at the through hole. Several limiting holes are provided on the limiting plate group. The limiting plate group includes a retracting limiting plate and an expanding limiting plate. The limiting hole includes two half limiting holes, and the two half limiting holes are respectively located on the retracting limiting plate and the expanding limiting plate. The retracting limiting plate is connected to the vehicle frame through a connecting rod, and the retracting limiting plate is located at the center of several anchor bar bodies.

[0012] There are two expanding limiting plates. The two expanding limiting plates are symmetrically arranged on both sides of the retracting limiting plate, and the expanding limiting plate is connected to the vehicle frame through a horizontal hydraulic rod.

[0013] Furthermore, the retracting limiting plate includes two half limiting plates. The half limiting plates are symmetrically arranged on both sides of the connecting rod, and the half limiting plate is rotationally connected to the connecting rod through an electric rotating shaft.

[0014] Furthermore, the pre-limiting component further includes a robotic arm. The base of the robotic arm is fixedly connected to the surface of the frame. And there are two robotic arms, and the two robotic arms are respectively arranged on both sides of the through hole. The anchor bar bodies exposed on the ground are deformed to a certain extent due to many construction influencing factors. This kind of deformation is mainly the overall inclination of a single bar body. Due to the large diameter and high stiffness of the bar body, manual correction is time-consuming and laborious, and the correction position is not accurate. The operation of using the robotic arm can improve the above problems.

[0015] Furthermore, the anchoring cylinder includes four identical cylinder valve membranes. The four cylinder valve membranes are combined into an inverted frustum shape. Denote the four cylinder valve membranes as the first cylinder valve membrane, the second cylinder valve membrane, the third cylinder valve membrane, and the fourth cylinder valve membrane. The first cylinder valve membrane and the second cylinder valve membrane are rotationally connected through an electric rotating shaft, and the third cylinder valve membrane and the fourth cylinder valve membrane are rotationally connected through an electric rotating shaft. The top end of the electric rotating shaft is connected to the portal frame through a telescopic rod.

[0016] The opening is in contact with the surface of the anchoring cylinder, and the maximum diameter of the opening is smaller than the average diameter of the anchoring cylinder.

[0017] Furthermore, a first round-bottom groove is provided on the casing valve, and the groove radius of the first round-bottom groove is the same as the radius of the anchor rod rib; the anchoring wedge is an inverted cone, and the maximum diameter of the anchoring wedge is greater than the inner diameter of the anchoring cylinder; and a second round-bottom groove is provided on the anchoring wedge, and the groove radius of the second round-bottom groove is the same as the radius of the anchor rod rib; the first round-bottom groove and the second round-bottom groove cooperate to form a rib clamping hole; the central angle of any horizontal cross-section of the first round-bottom groove β <180°, and the central angle of any horizontal cross-section of the second round-bottom groove α <180°.

[0018] The central angle of any horizontal cross-section of the first round-bottom groove and the central angle of any horizontal cross-section of the second round-bottom groove are both less than 180°, which can make a gap be left between the anchoring wedge and the anchoring cylinder when the anchor rod rib is in simultaneous contact with the first round-bottom groove and the second round-bottom groove. Thus, when the anchoring wedge presses downward, the anchor rod rib can be firmly clamped by the anchoring cylinder and the anchoring wedge.

[0019] Furthermore, the anchoring bottom beam includes a first anchoring beam and a second anchoring beam which are symmetrically arranged;

[0020] One ends of the first anchoring beam and the second anchoring beam are rotationally connected through an electric rotating shaft, and the other ends are connected through a locking buckle. The top end of the jack is fixedly connected to the first anchoring beam;

[0021] Half-open holes are provided on both the first anchoring beam and the second anchoring beam. When the first anchoring beam and the second anchoring beam are combined, the two half-open holes are combined to form an opening that is in fit connection with the anchoring cylinder.

[0022] Furthermore, a plurality of hydraulic outriggers are provided on both sides of the crawler vehicle, and the plurality of hydraulic outriggers are symmetrically distributed on both sides of the crawler vehicle.

[0023] An anti-floating anchor rod pull-out test method includes the following steps:

[0024] S1: Drive the crawler vehicle, and move the clamping assembly, the pulling assembly and the measuring assembly to the position of the anchor rod rib to be tested through the crawler vehicle, so that the anchor rod rib passes through the through groove and is located at the center of the through hole;

[0025] S2: Rotate the electric rotating shaft between the limit half plate and the connecting rod, and the two limit half plates form a horizontal retractable limit plate;

[0026] S3: Use the robotic arm to clamp and move the anchor rod rib to the limit half hole of the retractable limit plate. At the same time, the horizontal hydraulic rod extends to push the outward-expanding limit plate towards the retractable limit plate, and the outward-expanding limit plate and the retractable limit plate limit the anchor rod rib in the limit hole;

[0027] S4: After all the anchor rod bars are restricted in the limit holes, the electric rotating shafts between the first casing valve and the second casing valve and between the third casing valve and the fourth casing valve rotate, and the first casing valve, the second casing valve, the third casing valve and the fourth casing valve enclose the anchor rod bars.

[0028] S5: The second anchoring beam rotates, and the first anchoring beam and the second anchoring beam are combined so that the opening cooperates with the anchoring cylinder.

[0029] S6: The clamping hydraulic rod extends, and the anchoring wedge cooperates with the anchoring cylinder to clamp the anchor rod bar in the bar clamping hole.

[0030] S7: The jack jacks up the anchoring bottom beam, the upward displacement of the anchoring cylinder is measured by the displacement sensor, and the pulling force F on the anchor rod bar is measured by the pressure sensor.

[0031] ;

[0032] Among them, F Q is the acting force of the jack on the anchoring bottom beam measured by the pressure sensor; n is the number of jacks; F K is the downward pressure exerted by the clamping hydraulic rod on the anchor rod bar.

[0033] The beneficial effects of the present invention are as follows:

[0034] The present invention loads and moves the equipment for performing the tensile pull-out test on the anchor rod bar by a crawler vehicle, eliminating the need for manual handling of the test device, thus effectively saving manpower; the clamping process of the anchor rod bar is realized through the anchoring cylinder and the anchoring wedge, which is simple and practical, and the whole clamping process can be automated, reducing the training cost of workers and having high operation efficiency; the test results are obtained by the induction of the pressure sensor and the displacement sensor, thus avoiding the manual errors caused by manual data reading during the test. Description of the Drawings

[0035] Figure 1 is a three-dimensional structural schematic diagram of the pull-out test device;

[0036] Figure 2 is Figure 1 the enlarged schematic diagram at A in

[0037] Figure 3 is a partial schematic diagram of the limiting state I;

[0038] Figure 4 is a partial schematic diagram of the limiting state II;

[0039] Figure 5 is a partial schematic diagram of the surrounding state;

[0040] Figure 6 Partial schematic diagram of the clamping state

[0041] Figure 7 Schematic three-dimensional structure diagram during the pulling test

[0042] Figure 8 Schematic three-dimensional structure diagram of the anchoring wedge

[0043] Figure 9 Top view schematic diagram of the anchoring cylinder

[0044] Figure 10 For Figure 9 Schematic cross-sectional view of section B-B in

[0045] Among them, 1, crawler vehicle; 2, vehicle frame; 201, through hole; 202, through groove; 203, gantry; 301, anchoring wedge; 3011, second round bottom groove; 302, anchoring cylinder; 3021, first cylinder valve flap; 3022, second cylinder valve flap; 3023, third cylinder valve flap; 3024, fourth cylinder valve flap; 3025, first round bottom groove; 303, clamping hydraulic rod; 401, anchoring bottom beam; 4011, first anchoring beam; 4012, second anchoring beam; 402, jack; 403, opening; 5, electric rotating shaft; 601, retraction limiting plate; 6011, limiting half plate; 602, expansion limiting plate; 603, limiting half hole; 604, connecting rod; 605, horizontal hydraulic rod; 7, robotic arm; 8, hydraulic support leg; 9, telescopic rod; 10, anchor bar body. Specific embodiments

[0046] The specific embodiments of the present invention will be described below to facilitate those skilled in the art of the present technology to understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art of the present technology, as long as various changes are within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are within the scope of protection.

[0047] As Figure 1-2 shown, an anti-floating anchor pulling test device includes a crawler vehicle 1; a clamping assembly for clamping a plurality of anchor bar bodies 10, a pulling assembly for providing a pulling force, and a measuring assembly for measuring the pulling resistance of the anchor bar bodies 10 are provided on the vehicle frame 2 of the crawler vehicle 1; in this embodiment, four anchor bar bodies 10 are taken as an example for clamping;

[0048] A through hole 201 for accommodating the anchor bar body 10 is provided at the center of the vehicle frame 2, and a through groove 202 for the anchor bar body 10 to pass through and communicating with the through hole 201 is also provided on the vehicle frame 2;

[0049] The clamping component includes an anchoring cylinder 302 and an anchoring wedge 301 that cooperates with the anchoring cylinder 302 to clamp the anchor bar body 10; there are four rib body clamping holes for the four anchor bar bodies 10 to pass through between the anchoring wedge 301 and the anchoring cylinder 302, and the four rib body clamping holes are distributed at the vertices of a square; the anchoring cylinder 302 is vertically arranged directly above the through hole 201, a portal frame 203 is arranged on the vehicle frame 2, the anchoring wedge 301 is connected to the portal frame 203 through a clamping hydraulic rod 303, and the anchoring wedge 301 is vertically located directly above the anchoring cylinder 302;

[0050] The pulling component includes an anchoring bottom beam 401 and two vertically arranged jacks 402. The two jacks 402 are symmetrically arranged at both ends of the anchoring bottom beam 401. The top end of the jack 402 is fixedly connected to the anchoring bottom beam 401, and the bottom end of the jack 402 is fixedly connected to the vehicle frame 2; an opening 403 that cooperates with the anchoring cylinder 302 is arranged on the anchoring bottom beam 401;

[0051] The measuring component includes a displacement sensor for measuring the displacement length of the anchoring cylinder 302 and a pressure sensor for measuring the force exerted by the jack 402 on the anchoring bottom beam 401.

[0052] It further includes a pre-limiting component. The pre-limiting component includes a limiting plate group. The limiting plate group is located at the through hole 201; four limiting holes are arranged on the limiting plate group; the limiting plate group includes a retracting limiting plate 601 and an expanding limiting plate 602; the limiting holes include two limiting half holes 603, and the two limiting half holes 603 are respectively located on the retracting limiting plate 601 and the expanding limiting plate 602; the retracting limiting plate 601 is connected to the vehicle frame 2 through a connecting rod 604, and the retracting limiting plate 601 is located at the center of the four anchor bar bodies 10;

[0053] There are two expanding limiting plates 602. The two expanding limiting plates 602 are symmetrically arranged on both sides of the retracting limiting plate 601, and the expanding limiting plate 602 is connected to the vehicle frame 2 through a horizontal hydraulic rod 605.

[0054] The retracting limiting plate 601 includes two limiting half plates 6011. The limiting half plates 6011 are symmetrically arranged on both sides of the connecting rod 604, and the limiting half plates 6011 are rotationally connected to the connecting rod 604 through an electric rotating shaft 5.

[0055] The pre-limiting component further includes a robotic arm 7. The base of the robotic arm 7 is fixedly connected to the surface of the frame; and there are two robotic arms 7. The two robotic arms 7 are respectively arranged on both sides of the through hole 201. The robotic arm 7 adopts the robotic arm disclosed in the drawing ID 1240970 of the Mu Feng net.

[0056] The anchoring cylinder 302 includes four identical cylinder valves. The four cylinder valves are combined into an inverted frustum shape. Denote the four cylinder valves as the first cylinder valve, the second cylinder valve, the third cylinder valve, and the fourth cylinder valve. The first cylinder valve and the second cylinder valve are rotationally connected through an electric rotating shaft 5, and the third cylinder valve and the fourth cylinder valve are rotationally connected through an electric rotating shaft 5. The top of the electric rotating shaft 5 is connected to the gantry 203 through a telescopic rod 9.

[0057] The opening 403 is attached to the surface of the anchoring cylinder 302, and the maximum diameter of the opening 403 is smaller than the average diameter of the anchoring cylinder 302.

[0058] As Figures 8-10 shown, a first round-bottom groove 3025 is provided on the cylinder valve, and the groove radius of the first round-bottom groove 3025 is the same as the radius of the anchor bar rib 10. The anchoring wedge 301 is an inverted cone, and the maximum diameter of the anchoring wedge 301 is larger than the inner diameter of the anchoring cylinder 302. In order to reduce its own volume and weight, the anchoring wedge 301 is divided into two parts. The inclination angle of the generatrix of the upper part is the same as that of the second part of the inner diameter of the anchoring cylinder 302, and the slope of the generatrix of the lower part is increased, so as to save costs. At the same time, the length of the anchoring wedge 301 is reduced, and then the lengths of the clamping hydraulic rod 303 and the telescopic rod 9 are reduced, and the overall height of the device is reduced, saving the manufacturing cost. And a second round-bottom groove 3011 is provided on the anchoring wedge 301, and the groove radius of the second round-bottom groove 3011 is the same as the radius of the anchor bar rib 10. The first round-bottom groove 3025 and the second round-bottom groove 3011 cooperate to form a rib body clamping hole. The central angle β of any horizontal section of the first round-bottom groove 3025 < 180°, and the central angle α of any horizontal section of the second round-bottom groove 3011 < 180°.

[0059] The radial line of the second round-bottom groove 3011 is the generatrix of the anchoring wedge 301.

[0060] The inner diameter of the anchoring cylinder 302 includes a vertical first part and an inverted frustum-shaped second part. The first part is located below the second part, and the second part is attached to the surface of the anchoring wedge 301. The first round-bottom groove 3025 is arranged along the inner diameter of the anchoring cylinder 302 and also forms upper and lower parts.

[0061] The anchoring bottom beam 401 includes a symmetrically arranged first anchoring beam 4011 and a second anchoring beam 4012.

[0062] One end of the first anchoring beam 4011 and the second anchoring beam 4012 is rotationally connected through an electric rotating shaft 5, and the other end is connected through a locking buckle. The top of the jack 402 is fixedly connected to the first anchoring beam 4011.

[0063] Both the first anchoring beam 4011 and the second anchoring beam 4012 are provided with semi-open holes. When the first anchoring beam 4011 and the second anchoring beam 4012 are combined, the two semi-open holes form an opening 403 that cooperates with and connects to the anchoring cylinder 302.

[0064] Four hydraulic legs 8 are provided on both sides of the crawler vehicle 1, and the four hydraulic legs 8 are symmetrically distributed on both sides of the crawler vehicle 1.

[0065] An anti-floating anchor pull-out test method includes the following steps:

[0066] S1: Drive the crawler vehicle, and move the clamping assembly, the pulling assembly, and the measuring assembly to the anchor bar body to be tested through the crawler vehicle, so that the anchor bar body passes through the through groove and is located at the center of the through hole;

[0067] Before the crawler vehicle reaches the set position, the anchor bar body is pre-adjusted. After the anti-floating anchor is constructed, the anchor bar body is often above the ground. In order to prevent the anchor bar body from blocking the worker's progress or hindering the movement of objects when the worker walks, the anchor bar bodies are often tied together with iron wires. Tying the anchor bar bodies together will affect the insertion of the retractable limit plate and the connecting rod into the middle of the four anchor bar bodies. Therefore, it is necessary to manually separate the four retracted anchor bar bodies in advance.

[0068] S2: As Figure 3 shown, the electric rotating shaft between the limit half plate and the connecting rod rotates, and the two limit half plates form a horizontal retractable limit plate; if the four anchor bar bodies deviate towards the center, the limit half plate can push the anchor bar body to the set position during the process of rotating to the horizontal, facilitating the subsequent clamping of the anchor bar body by the anchoring cylinder and the anchoring wedge;

[0069] S3: Use the robotic arm to clamp and move the anchor bar body to the limit semi-hole of the retractable limit plate. At the same time, the horizontal hydraulic rod extends to push the outward expanding limit plate towards the retractable limit plate. As Figure 4 shown, the outward expanding limit plate and the retractable limit plate limit the anchor bar body in the limit hole; by correcting the position of the anchor bar body with the robotic arm, placing the anchor bar body at the fiber semi-hole of the retractable limit plate can enable the outward expanding limit plate to smoothly limit the anchor bar body with the retractable limit plate; if the four anchor bar bodies deviate away from the center, the outward expanding limit plate pushes the anchor bar body into the limit hole through the horizontal hydraulic rod, facilitating the subsequent clamping of the anchor bar body by the anchoring cylinder and the anchoring wedge;

[0070] S4: As Figure 5 shown, after all the anchor bar bodies are restricted in the limit holes, the electric rotating shafts between the first casing valve and the second casing valve and the electric rotating shafts between the third casing valve and the fourth casing valve rotate, and the first casing valve, the second casing valve, the third casing valve, and the fourth casing valve enclose the anchor bar body;

[0071] S5: The second anchoring beam rotates under the action of the electric rotating shaft, causing the first anchoring beam and the second anchoring beam to merge. The first anchoring beam and the second anchoring beam are locked together by locking buckles to form an integral body. The semi-open holes on the first anchoring beam and the semi-open holes on the second anchoring beam enclose to form an opening, and at this time, the anchoring cylinder is located in the opening, and the opening fits the surface of the anchoring cylinder;

[0072] S6: As Figures 6-7 shown, the clamping hydraulic rod extends, and a downward pressure F is applied to the anchoring wedge. K , under the action of the downward pressure, the anchoring wedge and the anchoring cylinder "clamp" the anchor bar body in the rib hole. And due to the setting of the first round bottom groove and the second round bottom groove, the anchor bar body has a small-angle bend, which can reduce the probability of the anchor bar body detaching from the clamping component. At the same time, the contact area between the anchor bar body and the first round bottom groove and the second round bottom groove is increased, thereby increasing the friction force, so that the anchor bar body will not have a slipping risk during subsequent pulling;

[0073] S7: The jack jacks up the anchoring bottom beam. The upward displacement of the anchoring cylinder is measured by a displacement sensor, and the pulling force F on the anchor bar body is measured by a pressure sensor.

[0074] ;

[0075] wherein, F Q is the acting force of the jack on the anchoring bottom beam measured by the pressure sensor; n is the number of jacks. Before the jack is lifted upward, the pressure sensor needs to perform a peeling operation on the downward pressure of the self-weight of the anchoring bottom beam and the anchoring cylinder on the jack, so as to achieve accurate data reading;

[0076] When the jack jacks up the anchoring bottom beam, the anchoring cylinder moves upward under the action of the telescopic rod and will not generate a force against the jack.

[0077] In this embodiment, n = 2, F K = 5 kN.

[0078] The entire test process can be manually remotely controlled by setting a single-chip microcomputer, a Bluetooth communication module, and a storage battery on the crawler vehicle. The electric rotating shaft, the clamping hydraulic rod, the measuring component, and the crawler vehicle are all electrically connected to the single-chip microcomputer.

Claims

1. A floating anchor pull-out test device, characterized in that: It comprises a tracked vehicle (1); a frame (2) of the tracked vehicle (1) is provided with a locking assembly for locking a plurality of anchor bars, a pulling assembly for providing a pulling force, and a measuring assembly for measuring the pull-out resistance of the anchor bars; A through hole (201) for accommodating an anchor bar is provided at the center of the vehicle frame (2), and a through groove (202) for the anchor bar to pass through and communicating with the through hole (201) is also provided on the vehicle frame (2); The locking assembly comprises an anchoring cylinder (302) and an anchoring wedge (301) that cooperates with the anchoring cylinder (302) to lock the anchor rod tendon; a plurality of tendon locking holes for a plurality of anchor rod tendons to pass through are provided between the anchoring wedge (301) and the anchoring cylinder (302); the anchoring cylinder (302) is vertically arranged just above the through hole (201); a portal frame (203) is provided on the vehicle frame (2); the anchoring wedge (301) is connected to the portal frame (203) via a locking hydraulic rod (303), and the anchoring wedge (301) is vertically located just above the anchoring cylinder (302); The pulling assembly comprises an anchoring bottom beam (401) and a plurality of vertically arranged jacks (402), wherein the plurality of jacks (402) are symmetrically arranged at both ends of the anchoring bottom beam (401), the top ends of the jacks (402) are fixedly connected to the anchoring bottom beam (401), and the bottom ends of the jacks (402) are fixedly connected to the vehicle frame (2); the anchoring bottom beam (401) is provided with an opening (403) that cooperates with the anchoring tube (302); The measuring assembly comprises a displacement sensor for measuring the displacement length of the anchoring tube (302) and a pressure sensor for measuring the force exerted by the jack (402) on the anchoring bottom beam (401); The anchoring tube (302) comprises four identical casing valves, the four casing valves are combined into an inverted truncated cone shape, and the four casing valves are a first casing valve, a second casing valve, a third casing valve, and a fourth casing valve; the first casing valve and the second casing valve, as well as the third casing valve and the fourth casing valve, are rotatably connected via an electric rotating shaft (5), and the top end of the electric rotating shaft (5) is connected to the gantry frame (203) via a telescopic rod (9); The opening (403) is in contact with the surface of the anchoring tube (302), and the maximum diameter of the opening (403) is smaller than the average diameter of the anchoring tube (302); The casing valve is provided with a first circular bottom groove (3025), and the groove radius of the first circular bottom groove (3025) is consistent with the radius of the anchor rod tendon body; the anchoring wedge (301) is an inverted cone, and the maximum diameter of the anchoring wedge (301) is greater than the inner diameter of the anchoring tube (302); and the anchoring wedge (301) is provided with a second circular bottom groove (3011), and the groove radius of the second circular bottom groove (3011) is consistent with the radius of the anchor rod tendon body; the first circular bottom groove (3025) and the second circular bottom groove (3011) cooperate to form a tendon body clamping hole; the center angle β of any horizontal cross section of the first circular bottom groove (3025) is less than 180°, and the center angle α of any horizontal cross section of the second circular bottom groove (3011) is less than 180°; The anchoring cylinder (302) comprises a vertical first part and an inverted frustum-shaped second part, wherein the first part is located below the second part, and the second part is in contact with the surface of the anchoring wedge (301); the first circular bottom groove (3025) is arranged along the inner diameter of the anchoring cylinder (302), also forming two upper and lower parts.

2. The anti-floating anchor pull-out test device according to claim 1, characterized in that: The pre-limiting assembly also includes a pre-limiting assembly, the pre-limiting assembly includes a limit plate group, the limit plate group is located at the through hole (201); the limit plate group is provided with a plurality of limit holes; the limit plate group includes an inward limit plate (601) and an outward limit plate (602); the limit hole includes two limit half holes (603), the two limit half holes (603) are respectively located on the inward limit plate (601) and the outward limit plate (602); the inward limit plate (601) is connected to the vehicle frame (2) via a connecting rod (604), and the inward limit plate (601) is located at the center of a plurality of anchor rod reinforcements; The outward expansion limit plates (602) include two, the two outward expansion limit plates (602) are symmetrically arranged on both sides of the inward expansion limit plate (601), and the outward expansion limit plates (602) are connected to the vehicle frame (2) via a horizontal hydraulic rod (605).

3. The anti-floating anchor pull-out test device according to claim 2, characterized in that: The retracted limiting plate (601) comprises two limiting half plates (6011), the limiting half plates (6011) are symmetrically arranged on both sides of the connecting rod (604), and the limiting half plates (6011) are rotatably connected via the electric rotating shaft (5) and the connecting rod (604).

4. The anti-floating anchor pull-out test device according to claim 3, characterized in that: The pre-limiting assembly further comprises a mechanical arm (7), the base of which is fixedly connected to the surface of the frame; and there are two mechanical arms (7), which are respectively arranged on both sides of the through hole (201).

5. The anti-floating anchor pull-out test device according to claim 4, characterized in that: The anchoring bottom beam (401) comprises a first anchoring beam (4011) and a second anchoring beam (4012) which are symmetrically arranged; One end of the first anchoring beam (4011) and the second anchoring beam (4012) are rotationally connected via an electric rotating shaft (5), and the other end is connected via a locking buckle, and the top end of the jack (402) is fixedly connected to the first anchoring beam (4011); The first anchoring beam (4011) and the second anchoring beam (4012) are both provided with a half-opening, and when the first anchoring beam (4011) and the second anchoring beam (4012) are combined, the two half-openings are combined to form an opening (403) that cooperates with the anchoring tube (302) and is connected.

6. The anti-floating anchor pull-out test device according to claim 5, characterized in that: A plurality of hydraulic legs (8) are arranged on both sides of the crawler vehicle (1), and the plurality of hydraulic legs (8) are symmetrically distributed on both sides of the crawler vehicle (1).

7. A pull-out test method using the anti-floating anchor pull-out test device according to claim 6, characterized in that: The steps include: S1: Drive the crawler vehicle to move the locking assembly, the pulling assembly and the measuring assembly to the anchor bar body to be tested, so that the anchor bar body passes through the through slot and is located at the center of the through hole; S2: The electric shaft between the limiting half plate and the connecting rod rotates, and the two limiting half plates form a horizontal retracted limiting plate; S3: Use the mechanical arm to clamp and move the anchor bar to the limiting half hole of the inner limit plate. At the same time, the horizontal hydraulic rod is extended to push the outer limit plate toward the inner limit plate. The outer limit plate and the inner limit plate limit the anchor bar in the limiting hole. S4: After all anchor rod ribs are restricted in the limiting holes, the electric shaft between the first casing valve and the second casing valve rotates, and the electric shaft between the third casing valve and the fourth casing valve rotates, and the first casing valve, the second casing valve, the third casing valve and the fourth casing valve enclose the anchor rod ribs; S5: the second anchor beam rotates, and the first anchor beam and the second anchor beam merge, so that the opening matches the anchor tube; S6: The locking hydraulic rod is extended, and the anchor wedge cooperates with the anchor tube to lock the anchor rod reinforcement body in the reinforcement body clamping hole; S7: The jack lifts the anchor bottom beam upward, and the upward displacement of the anchor tube is measured by the displacement sensor, and the pull-out force F on the anchor bar is measured by the pressure sensor. ； Among them, F Q F is the force exerted by the jack on the anchoring bottom beam measured by the pressure sensor; K is the downward pressure exerted by the locking hydraulic rod on the anchor bar; n is the number of jacks.

Images