An auxiliary device for detecting the bearing capacity of anchor bolts

Abstract

This utility model relates to the field of slope anchor bolt testing technology, and discloses an auxiliary device for testing the bearing capacity of anchor bolts, including: a testing platform; a testing bracket rotatably connected to the testing platform; a movable pulley rotatably and slidably connected to the testing bracket, the movable pulley being connected to an anchor for detachable connection with the anchor bolt; a pulling member disposed on the testing platform; and a pulling rope, one end of which is connected to the testing bracket, the middle of which is wound around the movable pulley, driving the movable pulley to move away from the slope, and the other end of which is connected to the pulling member, which is used to pull the other end of the pulling rope. Using the movable pulley for pulling reduces the traction force of the pulling member, thereby reducing the equipment requirements for the pulling member and increasing its service life.

Description

Technical Field

[0001] This utility model relates to the field of slope anchor testing technology, and in particular to an auxiliary device for testing the bearing capacity of anchors. Background Technology

[0002] As an important support structure, anchor bolts play a crucial role in slope protection, tunnel construction, and underground engineering. Testing their load-bearing capacity is essential for ensuring project safety. With the continuous development of engineering construction, the requirements for the accuracy and efficiency of anchor bolt load-bearing capacity testing are becoming increasingly stringent. An auxiliary device for anchor bolt load-bearing capacity testing has emerged, effectively improving the accuracy and reliability of testing while reducing risks during the testing process. This device can be applied to various complex engineering environments and has broad application prospects, providing strong protection for project safety.

[0003] However, existing anchor bolt bearing capacity testing technologies have some drawbacks. Taking patent document CN223122691U as an example, this solution proposes an auxiliary device for testing anchor bolt bearing capacity. Through an integrated design, the rotational cooperation of the testing platform and base allows the jack to approximately coincide with the centerline of the anchor bolt, thus enabling testing of anchor bolts at different angles. However, such testing devices still have the following drawbacks: the bearing capacity of anchor bolts is typically between 100kN and 800kN, and the maximum test load generally does not exceed 0.8 times the ultimate bearing capacity of the anchor bolt. For example, if the design ultimate bearing capacity of the anchor bolt is 100kN, the load applied in the test should not exceed 80kN. In the above testing process, the jack acts directly on the anchor bolt, and the force applied by the jack during the test is relatively large, placing high demands on the jack equipment. This may lead to accelerated wear on the jack equipment and reduce its service life.

[0004] Therefore, it is particularly important to develop a detection auxiliary device that can effectively reduce the force applied by the jack. Utility Model Content

[0005] The present invention aims to provide an auxiliary device for detecting the bearing capacity of anchor bolts, so as to overcome the above-mentioned shortcomings.

[0006] In order to achieve the above objectives, the technical solution of this utility model is as follows:

[0007] An auxiliary device for detecting the bearing capacity of anchor bolts, comprising:

[0008] Testing platform;

[0009] Rotate the detection bracket connected to the detection platform;

[0010] A movable pulley is rotatably slidably connected to the detection bracket. The movable pulley is connected to an anchor, which is used for detachable connection with an anchor rod.

[0011] The tension member installed on the detection platform; and

[0012] A traction rope, one end of which is connected to the detection bracket, the middle part of which is wound around the movable pulley to drive the movable pulley to move away from the slope, and the other end of which is connected to the pulling member to pull the other end of the traction rope.

[0013] Furthermore, the detection bracket is provided with a strip-shaped through hole, the first rotating shaft of the movable pulley is rotatably slidably connected to the strip-shaped through hole, and the second rotating shaft between the detection platform and the detection bracket is located above the strip-shaped through hole and on the extension line of the strip-shaped through hole.

[0014] Furthermore, the two ends of the rotating shaft of the movable pulley are rotatably connected to the pulley frame, and the anchor is connected to the lower part of the pulley frame.

[0015] Furthermore, two stationary pulleys are rotatably connected to the detection bracket. The two stationary pulleys are located above the movable pulley, and the three form an inverted triangle structure. The middle part of the traction rope passes through one of the stationary pulleys, the movable pulley, and the other stationary pulley in sequence. The two sections of the traction rope between the two stationary pulleys and the movable pulley are parallel to the length direction of the strip-shaped through hole.

[0016] Furthermore, the detection bracket includes:

[0017] Two support plates are located on the front and rear sides of the pulley frame. Each support plate has a strip-shaped through hole. The two ends of the rotating shaft of the movable pulley are rotatably and slidably connected to the two strip-shaped through holes, respectively. The support plates are rotatably connected to the detection platform via a vertically fixed rotating shaft two located within the space enclosed by the two stationary pulleys and the movable pulley.

[0018] Several connecting rods are vertically fixed between the two support plates.

[0019] Furthermore, the detection platform includes:

[0020] Base support;

[0021] Several support columns whose lower ends are vertically fixedly connected to the bottom bracket; and

[0022] A top bracket is fixedly connected to the upper end of the support column. Two support seats are fixedly installed at the upper end of the top bracket. The two support seats are rotatably connected to the two ends of the rotating shaft. The support plate is movably installed through the top bracket.

[0023] Furthermore, a traction component seat is fixedly connected to the top support, and a traction through hole is provided on the traction component seat. The traction component is a through-hole jack, and the other end of the traction rope passes through the traction through hole and is connected to the through-hole jack.

[0024] Furthermore, it also includes:

[0025] Rotary fixed pulley two is connected to the top bracket. The fixed pulley two is located between the support plate and the traction member seat and is frictionally connected to the other end of the traction rope to guide the other end of the traction rope through the traction through hole.

[0026] Furthermore, it also includes a fixing seat fixedly connected to the top bracket, the fixing seat being located on the side of the support plate away from the traction member seat, and the fixing seat being fixedly connected to one end of the traction rope.

[0027] Compared with the prior art, this utility model has at least the following advantages:

[0028] During the test, the testing platform was erected on the slope. One end of the anchor rod was inserted into the slope for anchoring, while the end protruding from the slope was connected to the anchorage. At this point, pulling the other end of the traction rope using a pulling device caused the movable pulley and anchorage to move away from the slope. Using the movable pulley for pulling reduces the traction force on the pulling components, thereby lowering the requirements for the pulling components and increasing their service life. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Fig. 1 This is a schematic diagram of the overall structure of the anchor bolt bearing capacity testing auxiliary device of this utility model;

[0031] Fig. 2 This is an assembly diagram of the present invention, including the movable pulley, the stationary pulley traction rope, and the testing bracket;

[0032] Fig. 3 This is an assembly diagram of the structure of the present invention, including the movable pulley, the stationary pulley traction rope, and the testing bracket.

[0033] Reference numerals in the attached drawings: 1. Testing platform; 2. Testing bracket; 3. Movable pulley; 4. Anchor; 5. Pulling component; 6. Traction rope; 7. Strip-shaped through hole; 8. Pulley frame; 9. Static pulley one; 10. Pulling component seat; 11. Pulling through hole; 12. Static pulley two; 13. Fixed seat; 101. Bottom bracket; 102. Support column; 103. Top bracket; 104. Support seat; 201. Support plate; 202. Connecting rod. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] Reference Figs. 1-3 This utility model provides an auxiliary device for testing the bearing capacity of anchor bolts, including a testing platform 1, a testing bracket 2, a movable pulley 3, an anchor 4, a pulling component 5, and a traction rope 6.

[0037] The device consists of: a testing platform 1, which is the basic structure for supporting and connecting other components; a testing bracket 2, which is rotatably connected to the testing platform 1; a movable pulley 3, which is rotatably and slidably connected to the testing bracket 2; an anchor 4, which is used for detachable connection with an anchor rod (the anchor 4 in the attached diagram is for illustrative purposes only; in actual use, the anchor 4 uses existing technology to connect the anchor rod during testing); a traction member 5, which is installed on the testing platform 1 and can apply traction force; a traction rope 6, one end of which is connected to the testing bracket 2, with its middle section wrapped around the movable pulley 3, causing the movable pulley 3 to move away from the slope; and the other end of the traction rope 6, which is connected to the traction member 5, which is used to pull the other end of the traction rope 6.

[0038] During the test, the testing platform 1 was erected on the slope. One end of the anchor rod was inserted into the slope for anchoring, while the end exposed on the slope was connected to the anchor 4. At this time, the other end of the traction rope 6 was pulled by the traction device, which could drive the movable pulley 3 and the anchor 4 to move away from the slope. Using the movable pulley 3 for traction can reduce the traction force of the traction component 5, thereby reducing the equipment requirements of the traction component 5 and increasing its service life.

[0039] The testing bracket 2 is provided with a strip-shaped through hole 7. The rotating shaft of the movable pulley 3 is rotatably and slidably connected to the strip-shaped through hole 7. The rotating shaft between the testing platform 1 and the testing bracket 2 is located above the strip-shaped through hole 7 and on the extension line of the strip-shaped through hole 7. The movable pulley 3 can slide within the strip-shaped through hole 7, thereby adjusting its position to accommodate anchor bolts of different lengths and angles. At the same time, it facilitates the pulling of the anchor bolts.

[0040] The two ends of the rotating shaft of the movable pulley 3 are rotatably connected to the pulley frame 8, and the bottom of the pulley frame 8 is connected to the anchor 4.

[0041] Two stationary pulleys (9) are rotatably connected to the testing bracket 2. These two stationary pulleys (9) are located above the movable pulley 3, forming an inverted triangle structure. The middle section of the traction rope 6 passes sequentially through one of the stationary pulleys (9), the movable pulley 3, and the other stationary pulley (9). The two stationary pulleys (9) are parallel to the two sections of the traction rope 6 between the movable pulley 3. This design ensures that the traction force at both ends of the traction rope 6 is equal, and each is half the anchor bolt traction force. Therefore, the pulling member 5 only needs to apply half of the test load force, facilitating the adjustment of test data.

[0042] The testing bracket 2 is rotatably connected to the testing platform 1 via a second rotating shaft, allowing it to rotate around the second rotating shaft. It mainly consists of two support plates 201 and several connecting rods 202. Each support plate 201 has a slotted through-hole 7, and the two ends of the rotating shaft of the movable pulley 3 are respectively rotatably slidably connected to two slotted through-holes 7. The support plate 201 is rotatably connected to the top bracket 103 of the testing platform 1 via a vertically fixed rotating shaft 2, which is located within the space enclosed by two stationary pulleys 9 and the movable pulley 3. The connecting rods 202 are vertically fixed between the two support plates 201, used to connect the two support plates 201.

[0043] The testing platform 1 includes a base support 101, several support columns 102, and a top support 103. The base support 101 provides stable bottom support for the entire platform and is made of welded double H-beams that are fixedly connected in a crisscross pattern. The support columns 102 are made of steel and are vertically fixed between the base support 101 and the top support 103, serving as both connections and supports.

[0044] The top support 103 has two support seats 104 at its upper end. These two support seats 104 are rotatably connected to both ends of the rotating shaft 2, so that the detection bracket 2 can rotate around the rotating shaft 2. A tension member seat 10 is also fixedly connected to the top support 103. The tension member seat 10 is provided with a tension through hole 11 for installing the tension member 5.

[0045] A traction element seat 10 is fixedly connected to the top support 103, and a traction element 5 is provided on the traction element seat 10. In this embodiment, a through-hole jack is used. The traction element seat 10 has a traction through hole 11, and the other end of the traction rope 6 passes through the traction through hole 11 on the traction element seat 10 and is connected to the through-hole jack. When the through-hole jack applies a pulling force, the traction rope 6 drives the movable pulley 3 to move away from the slope, thereby realizing the traction of the anchor rod.

[0046] A second stationary pulley 12 is rotatably connected to the top support 103. The second stationary pulley 12 is located between the support plate 201 and the traction component seat 10, and is frictionally connected to the other end of the traction rope 6 to guide the other end of the traction rope 6 to pass smoothly through the traction through hole 11.

[0047] In addition, a fixing seat 13 is fixedly connected to the top bracket 103. The fixing seat 13 is located on the side of the support plate 201 away from the traction component seat 10, and is used to fix one end of the traction rope 6 to ensure the stability of the traction rope 6 during the testing process.

[0048] Working principle of this utility model:

[0049] Step 1: Device Installation: First, place the testing platform 1 in a suitable position, ensuring its stability. Then, connect the testing bracket 2 to the top bracket 103 of the testing platform 1 via the rotating shaft 2, ensuring it can rotate freely. Next, install the pulling component 5 (through-hole jack) on the pulling component seat 10, and fix one end of the traction rope 6 to the fixed seat 13 of the testing bracket 2, passing the middle section around the movable pulley 3 and two stationary pulleys 9, and the other end passing through the stationary pulley 12 and the pulling through hole 11, connecting it to the through-hole jack. This completes the device installation.

[0050] Step 2, Anchor Bolt Connection: Connect the anchor bolt to the anchor 4 in a detachable manner, ensuring a firm and reliable connection. Adjust the position of the movable pulley 3 within the strip-shaped through hole 7 according to the length and angle of the anchor bolt, so that the movable pulley 3 can adapt to the inspection requirements of the anchor bolt. Use the pulling member 5 to pull the traction rope 6 to pre-tighten the traction rope 6. At this time, the strip-shaped through hole 7 is set parallel to the anchor bolt.

[0051] Step 3: Applying tension: Activate the through-hole jack, pulling the traction rope 6 to move the movable pulley 3 away from the slope. During the movement of the movable pulley 3, the tension in the traction rope 6 is transmitted to the anchor rod through the anchor 4, thus applying tension to the anchor rod. By controlling the tension of the through-hole jack, the different load-bearing capacities of the anchor rod can be tested.

[0052] Step 4: Data Recording and Analysis: During the application of tension, record the deformation of the anchor bolt and the magnitude of the applied tension in real time. Based on the recorded data, analyze whether the anchor bolt's bearing capacity meets the design requirements. If abnormal deformation or insufficient bearing capacity of the anchor bolt is found during the inspection, the inspection should be stopped immediately, and the anchor bolt should be inspected and repaired.

[0053] Step 5, Test Completion: After the test is completed, close the through-hole jack and release the tension of the traction rope 6. Remove the anchor rod from the anchor 4 to complete one anchor rod load-bearing capacity test. If other anchor rods need to be tested, the above steps can be repeated.

[0054] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0055] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. An auxiliary device for detecting the bearing capacity of anchor bolts, characterized in that, include: Testing platform (1); Rotate the detection bracket (2) connected to the detection platform (1); Rotary sliding connection is made to the movable pulley (3) on the detection bracket (2), the movable pulley (3) is connected to the anchor (4), the anchor (4) is used for detachable connection with the anchor rod; The tension member (5) is installed on the detection platform (1); and A traction rope (6) is provided, one end of which is connected to the detection bracket (2). The middle part of the traction rope (6) is wound around the movable pulley (3) to drive the movable pulley (3) to move away from the slope. The other end of the traction rope (6) is connected to the pulling member (5) to pull the other end of the traction rope (6).

2. The auxiliary device for detecting the bearing capacity of anchor bolts according to claim 1, characterized in that, The detection bracket (2) is provided with a strip-shaped through hole (7). The first rotating shaft of the movable pulley (3) is rotatably and slidably connected to the strip-shaped through hole (7). The second rotating shaft between the detection platform (1) and the detection bracket (2) is located above the strip-shaped through hole (7) and on the extension line of the strip-shaped through hole (7).

3. The auxiliary device for detecting the bearing capacity of anchor bolts according to claim 2, characterized in that, The rotating shaft of the movable pulley (3) is rotatably connected to the pulley frame (8) at both ends, and the anchor (4) is connected to the bottom of the pulley frame (8).

4. The auxiliary device for detecting the bearing capacity of anchor bolts according to claim 3, characterized in that, The detection bracket (2) is rotatably connected to two stationary pulleys (9). The two stationary pulleys (9) are located above the movable pulley (3). The three form an inverted triangle structure. The middle part of the traction rope (6) passes through one of the stationary pulleys (9), the movable pulley (3), and the other stationary pulley (9) in sequence. The two sections of the traction rope (6) between the two stationary pulleys (9) and the movable pulley (3) are parallel to the length direction of the strip-shaped through hole (7).

5. The auxiliary device for detecting the bearing capacity of anchor bolts according to claim 4, characterized in that, The detection bracket (2) includes: Two support plates (201) are located on the front and rear sides of the pulley frame (8). The support plates (201) are provided with the strip-shaped through holes (7). The two ends of the rotating shaft of the movable pulley (3) are respectively rotatably and slidably connected to the two strip-shaped through holes (7). The support plates (201) are rotatably connected to the detection platform (1) through a vertically fixed rotating shaft two. The rotating shaft two is located within the space enclosed by the two stationary pulleys (9) and the movable pulley (3). A plurality of connecting rods (202) are vertically fixed between the two support plates (201).

6. The auxiliary device for detecting the bearing capacity of anchor bolts according to claim 5, characterized in that, The detection platform (1) includes: Base support (101); A plurality of support columns (102) whose lower ends are vertically fixedly connected to the base bracket (101); and A top bracket (103) is fixedly connected to the upper end of the support column (102). Two support seats (104) are fixedly installed at the upper end of the top bracket (103). The two support seats (104) are rotatably connected to the two ends of the rotating shaft. The support plate (201) is movably installed through the top bracket (103).

7. The auxiliary device for detecting the bearing capacity of anchor bolts according to claim 6, characterized in that, A traction member seat (10) is fixedly connected to the top support (103). The traction member seat (10) is provided with a traction through hole (11). The traction member (5) is a through-hole jack. The other end of the traction rope (6) passes through the traction through hole (11) and is connected to the through-hole jack.

8. The auxiliary device for detecting the bearing capacity of anchor bolts according to claim 7, characterized in that, Also includes: Rotary connection is made to the second static pulley (12) on the top bracket (103). The second static pulley (12) is located between the support plate (201) and the traction member seat (10) and is frictionally connected to the other end of the traction rope (6) to guide the other end of the traction rope (6) through the traction through hole (11).

9. The auxiliary device for detecting the bearing capacity of anchor bolts according to claim 8, characterized in that, It also includes a fixing seat (13) fixedly connected to the top bracket (103), the fixing seat (13) being located on the side of the support plate (201) away from the traction member seat (10), and the fixing seat (13) being fixedly connected to one end of the traction rope (6).

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