Slope anchor rod bearing capacity detection device

Abstract

The utility model discloses a slope anchor rod bearing capacity detection device which comprises a clamp, a test line, a fixed pulley, a pulley support, a jack and a support. The clamp is used for being detachably fixed to an anchor rod. The pulley bracket is mounted on the upper side of the jack; the fixed pulley is installed on the pulley support and located on the axial upper side of the force application end of the jack. The jack is mounted on the support, and the support is vertically arranged on a side slope; one end of the test line is connected with the clamp, and the other end is connected with the force application end of the jack after passing through the fixed pulley. Therefore, according to the detection device, through a force transmission system formed by the fixed pulley and the flexible steel strand, the direction of the acting force can be conveniently changed, and the problem of anchor rod bearing capacity detection under the condition that an angle exists between the anchor rod and a slope is effectively solved. And by adopting the detection device, during repeated detection, only the clamp needs to be taken down, the detection device is moved to the corresponding anchor rod detection position, and the clamp is clamped again, so that the operation is simple and rapid.

Description

Technical Field

[0001] The utility model relates to the technical field of slope anchor rod detection, in particular to a slope anchor rod bearing capacity detection device. Background Art

[0002] Anchor rods are a common active reinforcement method used in slope support. One end of the rod is connected to the engineering structure, and the other end is deep in the stratum. The friction between the rod and the soil increases the anti-slip force of the slope soil. According to GB50086-2001 "Technical Specifications for Anchor Rod Shotcrete Support", anchor rod support must be tested for bearing capacity, the purpose of which is to determine the anchoring force of the anchor rod and evaluate the performance of its anchoring system. However, the anchor rod usually has a certain angle with the slope, so that the force direction of the jack used in the test is not perpendicular to the axis of the anchor rod, and the anchor rod will be subjected to a large shear force, resulting in damage to the anchor rod.

[0003] To address this problem, the following detection devices are disclosed in existing patents:

[0004] The first category is a multi-angle pad structure for anchor pull-out test, such as the one disclosed in Chinese Patent Publication No. CN219532718U. In this scheme, two steel plates are hinged at one end and connected at the other end by a rod with adjustable height (or both ends of the steel plates are connected by rods). This type of movable rod is easily damaged when subjected to a large concentrated force; or a multi-adaptive anchor pull-out force detection device, such as the one disclosed in Chinese Patent Publication No. CN220552704U. In this scheme, the movable rod is replaced by a bolt to adjust the rod support height. After the test, the bolt is easily stuck, affecting subsequent use.

[0005] The second category is the slope anchor and soil nail pull-out test device disclosed in Chinese Patent Publication No. CN204781020U. This solution adopts a fixed rod length and sets multiple slots on one side of the steel plate to adjust the angle. However, it is obviously affected by the position and number of the slots, and the adjustable angle is only a few fixed working conditions, which limits its application.

[0006] The third category is an anchor pull-out force testing device that can adapt to the anchor angle, as disclosed in Chinese patent publication number CN210803130U. In this solution, the principle of spherical rolling is used to adjust the detection angle. However, such devices are all split-type, and each component needs to be put on the anchor in turn. When the working surface is tilted, the components are easy to loosen, and it is difficult for a single person to fix the device and operate it, and the actual use effect is not good.

[0007] In view of this, the utility model proposes a novel bearing capacity detection device suitable for multi-angle slope anchor rods which is easy to reuse, so as to solve the above-mentioned problems. Utility Model Content

[0008] The utility model aims to provide a bearing capacity detection device suitable for multi-angle slope anchor rods which is easy to reuse and has the advantages of convenient operation, easy use and simple structure.

[0009] In order to achieve the above purpose, the solution of the utility model is:

[0010] A slope anchor bearing capacity detection device comprises a clamp, a test line, a fixed pulley, a pulley bracket, a jack and a support;

[0011] The clamp is used for detachable fixation with the anchor rod;

[0012] The pulley bracket is installed on the upper side of the jack;

[0013] The fixed pulley is mounted on the pulley bracket and is located on the upper side of the axial direction of the force-applying end of the jack;

[0014] The jack is installed on a support, and the support is placed vertically on the slope;

[0015] One end of the test line is connected to the fixture, and the other end is connected to the force-applying end of the jack after sliding through a fixed pulley.

[0016] Furthermore, the jack is a hollow jack, which is installed on the upper part of the support, and the force-applying end of the jack faces the slope; the other end of the test line slides through the fixed pulley and then passes through the hollow through-hole of the hollow jack, and is finally anchored to the force-applying end of the jack.

[0017] Furthermore, the support includes a top plate, a bottom plate and a plurality of pillars, and the pillars are fixed between the top plate and the bottom plate and spaced apart from each other up and down; a mounting hole is provided in the middle of the top plate, and a positioning ring is provided around the mounting hole; the jack is installed on the top plate and positioned in the positioning ring; the force-applying end of the jack extends downward from the mounting hole and is located between the top plate and the bottom plate.

[0018] Furthermore, the jack, the support and the test line are detachably connected to each other; the pulley bracket and the jack are detachably connected.

[0019] Furthermore, the pulley bracket includes a fixed plate and a plurality of support rods. The fixed plate is installed on the upper side of the jack. A through hole is provided in the middle of the fixed plate, and the through hole corresponds to the hollow through hole of the jack. There are at least two support rods, and the two support rods are symmetrically arranged on both sides of the through hole. The fixed pulley is suspended above the through hole, and the axial ends of the fixed pulley are connected to the two support rods.

[0020] Furthermore, both ends of the fixed pulley are fixed to the support rod by bolts respectively.

[0021] Furthermore, there are four support rods, with two support rods on each side of the through hole. The two support rods on either side of the through hole are in an inverted "V" shape with their tops connected, and the bottoms of the two support rods are connected and fixed to the edge of the fixed plate at intervals, and the two ends of the fixed pulley are respectively connected to the tops of the two support rods.

[0022] Furthermore, the test wire is a flexible steel stranded wire.

[0023] Furthermore, at least two fixing rings are evenly spaced circumferentially provided on the outer wall of the clamp; at least two connecting wires are divided into at least two connecting wires through a wire divider at one end of the test wire, and the two connecting wires are detachably connected to the two fixing rings respectively.

[0024] Furthermore, the connecting wires are detachably fastened to the fixing rings via buckles.

[0025] After adopting the above technical solution, the detection device, through the force transmission system composed of fixed pulleys and flexible steel strands, is convenient for changing the direction of the force, effectively solving the problem of anchor bearing capacity detection when there is an angle between the anchor and the slope. Moreover, when using this detection device, when repeating the detection, it is only necessary to remove the clamp, move the detection device to the corresponding anchor detection position, and re-clamp the clamp, which is simple and fast to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of an embodiment of the utility model;

[0027] Figure 2 It is a partial structural stereogram of an embodiment of the utility model;

[0028] Figure 3 It is a partial structural exploded view of an embodiment of the utility model;

[0029] Figure 4 This is a schematic diagram of a detection test of an embodiment of the utility model (I);

[0030] Figure 5 This is a schematic diagram of a detection test of an embodiment of the utility model (II).

[0031] Explanation of reference numerals: detection device 10, clamp 1, fixing ring 11, test line 2, splitter 21, connecting line 22, buckle 23, fixed pulley 3, bolt 31, pulley bracket 4, fixing plate 41, through hole 411, support rod 42, jack 5, force-applying end 51, hollow through hole 52, support 6, top plate 61, mounting hole 611, bottom plate 62, support 63, positioning ring 64, nut 7, anchor rod 20, slope 30, angle α between anchor rod and slope, height L of detection device. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0033] like Figures 1 to 5 As shown, a slope anchor bearing capacity detection device of the utility model is provided. The detection device 10 includes a clamp 1, a test line 2, a fixed pulley 3, a pulley bracket 4, a jack 5 and a support 6.

[0034] The clamp 1 is used for detachable fixation with the anchor rod 20; the pulley bracket 4 is installed on the upper side of the jack 5; the fixed pulley 3 is installed on the pulley bracket 4 and is located on the axial upper side of the force-applying end 51 of the jack 5; the jack 5 is installed on the support 6, and the support 6 is vertically placed on the slope 30; one end of the test line 2 is connected to the clamp 1, and the other end is slidably connected to the force-applying end 51 of the jack 5 after passing through the fixed pulley 3. The fixed pulley 3 can play a role in changing the direction of the force, so that the jack 5 and the anchor rod 20 are connected.

[0035] In addition, the jack 5, the support 6 and the test line 2 of this embodiment are detachably connected to each other; the pulley bracket 4 and the jack 5 are also detachably connected, so as to facilitate the disassembly of the detection device 10 into multiple components, so as to reduce the volume and facilitate storage. Of course, the jack 5, the support 6, the test line 2 and the pulley bracket 4 can also be set as an integral structure to save the assembly steps of the detection device 10.

[0036] The test line 2 is a flexible steel stranded wire, and other structures may also be used.

[0037] By this, Figure 4 and Figure 5 After adopting the above-mentioned detection device 10 (taking the detachable detection device 10 structure as an example), the test process of the anchor rod 20 of the slope 30 can be as follows:

[0038] 1. First, measure the angle α between the anchor rod 20 and the slope 30, calculate the distance (L / tanα) from the center of the detection device 10 to the bottom of the anchor rod 20 through the height L of the detection device 10 (the height placed on the horizontal plane), and place the corresponding part of the support 6 on the slope 30.

[0039] 2. One end of the test line 2 is first fixed to the force-applying end 51 of the jack 5 , and then the pulley bracket 4 is clamped on the jack 5 , and the jack 5 is installed and placed on the support 6 .

[0040] 3. The other end of the test line 2 is close to and passes around the fixed pulley 3, and the clamp 1 at the other end is clamped on the anchor rod 20. The clamp 1 is clamped at a suitable position on the anchor rod 20 according to the length of the test line 2 and keeps the test line 2 straight.

[0041] 4. Start applying a thrust force at one end of the jack 5 close to the slope 30 to straighten the test line 2 until the force applied by the jack 5 reaches the bearing capacity requirement of the anchor rod 20 and then gradually decreases to zero.

[0042] 5. Remove the clamp 1 on the anchor rod 20, but do not disassemble the detection device 10. Move it to the next anchor rod 20 detection position, clamp the clamp 1 on the anchor rod 20 again and repeat the test until all anchor rods 20 are tested. Disassemble the detection device 10 and place it properly.

[0043] Thus, the connection of each component is quick and convenient. When repeating the test, it is only necessary to remove the clamp 1, move the detection device 10 to the detection position of the corresponding anchor rod 20, and re-clamp the clamp 1. The operation is simple and fast. Moreover, the detection device 10 is easy to change the direction of the force through the force transmission system composed of the fixed pulley 3 and the flexible steel strand, which effectively solves the problem of anchor rod 20 bearing capacity detection when there is an angle between the anchor rod 20 and the slope 30.

[0044] In this embodiment, the jack 5 is a hollow jack 5 .

[0045] See also Figure 3 , the jack 5 is installed on the upper part of the support 6, and the force-applying end 51 of the jack 5 faces the slope 30; the other end of the test line 2 slides through the fixed pulley 3 and then passes through the hollow through-hole 52 of the hollow jack 5, and finally can be anchored to the force-applying end 51 of the jack 5 through the nut 7. Thus, the test line 2 is pulled downward, and at the same time, the pressure at the top fixed pulley 3 will press the jack 5 and the support 6 below, so that the device is fixed on the slope under force, and then the detection can be realized.

[0046] In this embodiment, the support 6 includes a top plate 61, a bottom plate 62 and a plurality of pillars 63, and the pillars 63 are fixed between the top plate 61 and the bottom plate 62 and spaced apart from each other up and down; a mounting hole 611 is provided in the middle of the top plate 61, and a positioning ring 64 is provided on the periphery of the mounting hole 611; the jack 5 is installed on the top plate 61 and positioned in the positioning ring 64; the positioning ring 64 is provided to facilitate the positioning and installation of the jack 5, and to limit the jack 5 from shifting; the force-applying end 51 of the jack 5 extends downward from the mounting hole 611, and is located between the top plate 61 and the bottom plate 62, so as to facilitate the anchoring of the test line 2.

[0047] Furthermore, the bottom plate 62 and the top plate 61 are both circular plates, and the diameter of the bottom plate 62 is larger than the diameter of the top plate 61, so as to improve the overall stability of the detection device 10.

[0048] In this embodiment, the pulley bracket 4 includes a fixing plate 41 and a plurality of supporting rods 42. The fixing plate 41 is clamped and fixed on the upper side of the jack 5. A clamping groove (not shown) can be provided below the fixing plate 41 so that the top of the jack 5 is clamped in the clamping groove. A through hole 411 is provided in the middle of the fixing plate 41, and the through hole 411 corresponds to the hollow through hole 52 of the jack 5. There are at least two supporting rods 42, which are symmetrically arranged on both sides of the through hole 411. The fixed pulley 3 is suspended above the through hole 411, and the two axial ends of the fixed pulley 3 are connected to the two supporting rods 42. The two ends of the fixed pulley 3 can be fixed to the supporting rods 42 by bolts 31, respectively.

[0049] Specifically, in this embodiment, there are four support rods 42, two support rods 42 are respectively provided on both sides of the through hole 411, and the two support rods 42 on either side of the through hole 411 are in an inverted "V" shape with the tops connected, and the bottoms of the two support rods 42 are connected and fixed to the edge of the fixed plate 41 at intervals, and the two ends of the fixed pulley 3 are respectively connected to the tops of the two support rods 42. The provision of each support rod 42 can disperse and withstand the downward pressure from the fixed pulley 3, and transmit it to the pulley bracket 4.

[0050] Another example Figure 1 , Figure 4 and Figure 5 As shown, at least two fixing rings 11 are evenly spaced circumferentially on the outer wall of the clamp 1; at least two connecting wires 22 are separated from one end of the test line 2 by a wire splitter 21, and the two connecting wires 22 are detachably connected to the two fixing rings 11. The clamp 1 and the wire splitter 21 can adopt existing structures, and the clamp 1 can clamp the anchor rod 20. The connecting wires 22 are detachably buckled on the fixing rings 11 by buckles 23 to facilitate the connection between the connecting wires 22 and the fixing rings 11, and the buckles 23 also adopt existing structures.

[0051] The above is only a preferred embodiment of the utility model, and the protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, equivalent changes and modifications without departing from the principle of the utility model should still fall within the protection scope of the utility model.

[0052] In the description of the embodiments of the present application, it should be understood that the indicated orientation or position relationship is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the application is usually placed when in use, or is the orientation or position relationship commonly understood by technical personnel in this field. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0053] In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically limited. In addition, this application provides examples of various specific processes and materials, but those skilled in the art can recognize the application of other processes and / or the use of other materials.

Claims

1. A slope anchor bearing capacity detection device, characterized in that: Includes fixture, test line, fixed pulley, pulley bracket, jack and support; The clamp is used for detachable fixation with the anchor rod; The pulley bracket is installed on the upper side of the jack; The fixed pulley is mounted on the pulley bracket and is located on the upper side of the axial direction of the force-applying end of the jack; The jack is installed on a support, and the support is placed vertically on the slope; One end of the test line is connected to the fixture, and the other end is connected to the force-applying end of the jack after sliding through the fixed pulley; The jack is a hollow jack, which is installed on the upper part of the support, and the force-applying end of the jack faces the slope.

2. A slope anchor bearing capacity detection device according to claim 1, characterized in that: The other end of the test line is slidably connected to the fixed pulley and then passes through the hollow through-hole of the hollow jack, and is finally anchored at the force-applying end of the jack.

3. A slope anchor bearing capacity detection device according to claim 2, characterized in that: The support includes a top plate, a bottom plate and a plurality of pillars, and the pillars are fixed between the top plate and the bottom plate and spaced apart from each other up and down; a mounting hole is provided in the middle of the top plate, and a positioning ring is provided on the periphery of the mounting hole; the jack is installed on the top plate and positioned in the positioning ring; the force-applying end of the jack extends downward from the mounting hole and is located between the top plate and the bottom plate.

4. A slope anchor bearing capacity detection device according to claim 1, characterized in that: The jack, the support and the test line are detachably connected to each other; the pulley bracket and the jack are detachably connected.

5. A slope anchor bearing capacity detection device according to claim 2, characterized in that: The pulley bracket includes a fixed plate and a plurality of support rods. The fixed plate is installed on the upper side of the jack. A through hole is provided in the middle of the fixed plate, and the through hole corresponds to the hollow through hole of the jack. There are at least two support rods, which are symmetrically arranged on both sides of the through hole. The fixed pulley is suspended above the through hole, and the axial ends of the fixed pulley are connected to the two support rods.

6. A slope anchor bearing capacity detection device according to claim 5, characterized in that: The two ends of the fixed pulley are fixed to the support rod by bolts respectively.

7. A slope anchor bearing capacity detection device according to claim 5, characterized in that: There are four support rods, two of which are respectively arranged on both sides of the through hole. The two support rods on either side of the through hole are in an inverted "V" shape with their tops connected, and the bottoms of the two support rods are connected and fixed to the edge of the fixed plate at intervals, and the two ends of the fixed pulley are respectively connected to the tops of the two support rods.

8. A slope anchor bearing capacity detection device according to claim 1, characterized in that: The test wire is a flexible steel stranded wire.

9. A slope anchor bearing capacity detection device according to claim 1, characterized in that: At least two fixing rings are evenly spaced circumferentially provided on the outer wall of the clamp; at least two connecting wires are divided into at least two connecting wires through a wire divider at one end of the test wire, and the two connecting wires are detachably connected to the two fixing rings respectively.

10. A slope anchor bearing capacity detection device according to claim 9, characterized in that: The connecting wires are detachably buckled on the fixing rings through buckles.

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