Auxiliary device for detecting bearing capacity of anchor rod

Abstract

An auxiliary device for detecting the bearing capacity of an anchor rod comprises a clamp, a detection platform and a base. A base through hole is formed in the base, and a sliding groove is formed in at least one side of the base through hole; the detection platform comprises a detection disc, a connecting piece and a rotating disc, the detection disc is provided with a detection through hole, and the connecting piece is connected with the detection disc and the rotating disc; the rotating disc is rotatably matched in the sliding groove, so that the whole detection platform is rotatably matched with the base; an arc-shaped limiting groove concentric with the arc bottom face is formed in the side wall of the sliding groove, and a sliding rod extending into the arc-shaped limiting groove is arranged on the side wall of the rotating disc. A detection disc top surface positioning groove of the detection platform is used for installing a jack; the clamp is used for being detachably connected with the anchor rod and is pushed by the force application end. As the detection auxiliary device adopts an integrated design, the structure is firm and reliable, the actual operation is simple and convenient, and the detection of the bearing capacity of the anchor rod can be easily completed only by sleeving the detection auxiliary device on the anchor rod and slightly rotating the detection auxiliary device.

Description

Technical Field

[0001] The utility model relates to the technical field of slope anchor bolt detection, in particular to a detection auxiliary device for the bearing capacity of anchor bolts. Background Technique

[0002] The anchor bolt is an active reinforcement method widely used in projects such as roadways, slopes, tunnels, and dams.

[0003] One end of it is connected to the engineering structure, and the other end penetrates deep into the formation. The whole anchor bolt is divided into a free section and an anchorage section. The free section refers to the area that transmits the tension at the anchor bolt head to the anchor body, and its function is to apply prestress to the anchor bolt; the anchorage section refers to the area where the cement paste bonds the prestressed tendon to the soil layer, and its function is to increase the bonding friction between the anchor body and the soil layer, increase the bearing pressure of the anchor body, and transmit the tension of the free section to the deep soil layer. According to the "Technical Code for Shotcrete with Wire Mesh and Anchor Bolt Support" GB50086-2015, the strength of the anchor bolt support must be detected, and the purpose is to determine the anchorability of the roadway surrounding rock, evaluate the performance of the surrounding rock anchorage system and the anchoring force of the anchor bolt. The test must be carried out on site. However, in order to give full play to its anchoring effect, the anchor bolt is usually inserted into the soil at a certain angle, so it is usually not perpendicular to the construction surface such as the slope or the tunnel surrounding rock. As a result, the force application direction of the jack used for detection is not perpendicular to the axis of the anchor bolt, and the anchor bolt will be subjected to a large shear force, resulting in eccentric tension and damage of the anchor bolt.

[0004] In view of this problem, the existing patent discloses an anchor bolt uplift force test device adaptable to the anchor bolt deflection angle, such as the one disclosed in Chinese Patent Publication No. 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 sleeved on the anchor bolt in sequence. When the working surface is inclined, each component is likely to loosen, and it is difficult for a single person to fix the device and operate, so the actual use effect is not good.

[0005] In view of this, the utility model provides a detection auxiliary device for the bearing capacity of anchor bolts to solve the above problems. Content of the Utility Model

[0006] The purpose of the utility model is to provide a detection auxiliary device for the bearing capacity of anchor bolts, which can accurately carry out the bearing capacity detection test on anchor bolts, especially slope anchor bolts, avoid damage to the anchor bolts, and has the advantages of simple structure, convenient use and being integral.

[0007] In order to achieve the above purpose, the solution of the utility model is:

[0008] A detection auxiliary device for the bearing capacity of anchor bolts includes a fixture, a detection platform and a base;

[0009] The base is provided with a base through hole, and sliding grooves are arranged on both sides of the base through hole. The sliding grooves are open at the top surface and have an arc-shaped bottom surface at the bottom.

[0010] The detection platform includes a detection disc, two connecting members, and two rotating discs. The detection disc is provided with a detection through hole, and a positioning groove is arranged on the top surface of the detection disc. The two connecting members and the two rotating discs are respectively arranged on both sides of the detection through hole below the detection disc, and the connecting member on the same side connects the top surface of the rotating disc on the same side and the bottom surface of the detection disc. An arc surface is arranged on the bottom surface of each rotating disc.

[0011] The two rotating discs respectively extend into the sliding grooves from the openings on both sides of the base through hole and are rotatably fitted in the sliding grooves. The arc surface of the rotating disc is fitted with the arc-shaped bottom surface of the sliding groove, so that the detection platform as a whole is rotatably fitted with the base, and at the same time, the detection through hole is always aligned with the base through hole.

[0012] The side wall of the sliding groove is provided with an arc-shaped limiting groove concentric with the arc-shaped bottom surface. A sliding rod is arranged on the side wall of the rotating disc and extends into the arc-shaped limiting groove. The sliding rod can slide along the arc-shaped limiting groove.

[0013] The positioning groove on the top surface of the detection disc of the detection platform is used for installing a jack. The jack is a hollow jack, and the hollow jack is aligned with the detection through hole.

[0014] The clamp is used for detachably connecting with the anchor rod and is arranged outside the force application end of the jack away from the detection platform and is pushed by the force application end.

[0015] Further, sliding grooves are arranged on both sides of the base through hole of the base, and two rotating discs and connecting members are arranged below the corresponding detection disc.

[0016] Further, a protruding sliding part is arranged on the base; the sliding groove is recessed in the sliding part.

[0017] Further, the base through hole is a long hole; the sliding part is a rectangular body arranged along the length direction of the long hole; the axial direction of the sliding groove is perpendicular to the length direction of the long hole.

[0018] Further, the arc-shaped limiting groove penetrates through the sliding part along the axial direction of the sliding groove. The sliding rod of the rotating disc is a detachable structure, and the outer end of the sliding rod penetrates out of the arc-shaped limiting groove, and a limiting part with a diameter larger than the width of the sliding groove is arranged on the outer end of the sliding rod.

[0019] Further, corresponding arc-shaped limiting grooves are arranged on both side walls of the sliding groove; the sliding rod is a rod axially passing through a through hole on the rotating disc, and the two outer ends of the sliding rod respectively penetrate out of the two arc-shaped limiting grooves; the limiting part is a nut, and the nut performs axial limiting, and there is a distance between the nuts on both sides of the sliding part and the outer wall of the sliding part respectively.

[0020] Furthermore, corner braces are respectively provided on both sides of the sliding part perpendicular to the axial direction of the sliding groove. The side surface of the corner brace is closely attached to the side wall of the sliding part, and the bottom surface is closely attached to the top surface of the base.

[0021] Furthermore, a positioning ring is provided on the top surface of the detection disc, and the positioning grooves are formed between the positioning rings.

[0022] Furthermore, at least one carrying handle is provided on the base.

[0023] After adopting the above technical solution, since the detection auxiliary device adopts an integrated design, that is, the detection platform and the base can be combined into one body by means of the sliding rod, the structure is firm and reliable, and the actual operation is simple and convenient. Only need to put the detection auxiliary device on the anchor rod and slightly rotate the detection platform to make the jack roughly coincide with the center line of the anchor rod. When the jack applies tension, due to the easy rotation of the rotating disc in the sliding groove, the angle error will be automatically cleared, and one person can easily complete the detection of the bearing capacity of the anchor rod. It can effectively meet the detection requirements of anchor rods at different angles, and has a wide angle adaptability. Description of the Drawings

[0024] Figure 1 is a perspective view of an embodiment of the present invention;

[0025] Figure 2 is an exploded view of an embodiment of the present invention;

[0026] Figure 3 is a cross-sectional view of an embodiment of the present invention;

[0027] Figure 4 is a schematic diagram of the test process of an embodiment of the present invention (one);

[0028] Figure 5 is a schematic diagram of the test process of an embodiment of the present invention (two).

[0029] Reference numerals: Detection auxiliary device A, fixture 1, detection platform 2, detection disc 21, detection through hole 211, positioning groove 212, positioning ring 213, connecting piece 22, rotating disc 23, arc surface 231, sliding rod 232, limiting piece 233, perforation 234, base 3, base through hole 31, sliding groove 32, opening 321, arc bottom surface 322, arc-shaped limiting groove 323, sliding part 33, corner brace 34, carrying handle 35, jack 4, force application end 41, anchor rod 5, slope 6. Detailed Embodiment

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, rather than all of them. The components of the embodiments of this application usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0031] As Figures 1 to 5 shown, a detection auxiliary device A for the bearing capacity of an anchor rod according to the utility model includes a fixture 1, a detection platform 2, and a base 3 to cooperate with detection equipment such as a jack to implement a bearing capacity test for the anchor rod (especially a slope anchor rod).

[0032] A base through hole 31 is provided on the base 3, and sliding grooves 32 are provided on both sides of the base through hole 31. The top surface of the sliding groove 32 has an opening 321, and the bottom surface is an arc bottom surface 322.

[0033] The detection platform 2 includes a detection disc 21, two connecting members 22, and two rotating discs 23. A detection through hole 211 is provided on the detection disc 21, and a positioning groove 212 is provided on the top surface of the detection disc 21;

[0034] The two connecting members 22 and the two rotating discs 23 are respectively provided on both sides of the detection through hole 211 below the detection disc 21, and the connecting member 22 on the same side connects the top surface of the rotating disc 23 on the same side and the bottom surface of the detection disc 21. An arc surface 231 is provided on the bottom surface of the rotating disc 23; the connecting member 22 is a member connecting the rotating disc 23 and the detection disc 21, having a certain height to prevent the base 3 from restricting the rotation of the detection platform 2.

[0035] The two rotating discs 23 respectively extend into the sliding grooves 32 from the openings 321 on both sides of the base through hole 31 and are rotatably fitted in the sliding grooves 32. The arc surface 231 of the rotating disc 23 cooperates with the arc bottom surface 322 of the sliding groove 32, so that the detection platform 2 as a whole is rotatably fitted with the base 3, and at the same time, the detection through hole 211 is always aligned with the base through hole 31.

[0036] Lubricating oil can also be added between the rotating disc 23 and the sliding groove 32 for lubrication.

[0037] An arc-shaped limiting groove 323 concentric with the arc bottom surface 322 is provided on the side wall of the sliding groove 32, and a sliding rod 232 extending into the arc-shaped limiting groove 323 is provided on the side wall of the rotating disc 23. The sliding rod 232 can slide along the arc-shaped limiting groove 323.

[0038] The positioning groove 212 on the top surface of the detection plate 21 of the detection platform 2 is used to install the jack 4; the jack 4 is a hollow jack 4, and the hollow jack 4 is aligned with the detection through hole 211; the fixture 1 is used for detachably connecting with the anchor bolt 5 and is arranged outside the force application end 41 of the jack 4 away from the detection platform 2 and is pushed by the force application end 41.

[0039] The fixture 1 can adopt an existing structure, which is used to clamp the anchor bolt 5, bear the jacking force of the jack 4 and limit the displacement of the jack 4. Only a schematic drawing is shown in the figure.

[0040] With the above detection auxiliary device A, refer to Figure 4 and Figure 5 , the following steps can be adopted to realize the pulling test of the anchor bolts 5 at different angles on the slope 6:

[0041] First, put the detection auxiliary device A on the anchor bolt 5, and make the anchor bolt 5 pass through the base through hole 31 and the detection through hole 211 in sequence; secondly, turn the detection plate 21 of the detection platform 2. By rolling the rotating disk 23 in the sliding groove 32 to drive the detection plate 21 to rotate, the detection plate 21 can be roughly perpendicular to the anchor bolt 5; then pass the jack 4 and the fixture 1 through the anchor bolt 5 and fix them in the positioning groove 212; the jack 4 applies a jacking force to the fixture 1, and its reaction force is transmitted to the detection platform 2, driving the detection plate 21 and the rotating disk 23 to finely rotate and automatically align precisely, so that the detection plate 21 is completely perpendicular to the anchor bolt 5, eliminating the angle error; when the detected bearing capacity reaches the design requirement, remove the power of the jack 4 and the detection is completed; remove the jack 4 and the detection auxiliary device A from the anchor bolt 5 and conduct the next detection. Due to the integrated design of the detection auxiliary device A of the present utility model, that is, the detection platform 2 and the base 3 can be combined into one by the sliding rod 232, the structure is firm and reliable, and the actual operation is simple and convenient. Only need to put the detection auxiliary device A on the anchor bolt 5 and slightly rotate the detection platform 2 to make the center line of the jack 4 and the anchor bolt 5 roughly coincide. When the jack 4 applies a pulling force, due to the easy rotation of the rotating disk 23 in the sliding groove 32, the angle error will be automatically cleared, and one person can easily complete the bearing capacity detection of the anchor bolt 5.

[0042] The device cleverly uses the characteristic that the rotating disk 23 is easy to rotate in the sliding groove 32, which can effectively change the angle of the detection platform 2 of the device. When the jack 4 applies a pulling force, if there is an angle error between the detection platform 2 and the anchor bolt 5, under the condition of the device being stressed, the rotating disk 23 will automatically rotate in the sliding groove 32, and the angle error will be automatically cleared, which can effectively meet the detection requirements of the anchor bolts 5 at different angles, and has a wide angle adaptability, and can not only be used for the slope 6, but also can test the vertical anchor bolts 5.

[0043] In this embodiment, sliding grooves 32 are provided on both sides of the base through hole 31 of the base 3, and correspondingly, two rotating disks 23 and a connecting member 22 are provided below the detection disk 21 to improve the stability of the overall structure of the detection auxiliary device A.

[0044] Referring to Figure 3 , in this embodiment, a protruding sliding portion 33 is provided on the base 3; the sliding groove 32 is recessed in the sliding portion 33.

[0045] As shown in Figure 2 , the base through hole 31 is a long hole to provide various-angle anchor rods 5 to pass through; the sliding portion 33 is a rectangular body arranged along the length direction of the long hole; the axial direction of the sliding groove 32 is perpendicular to the length direction of the long hole.

[0046] The arc-shaped limiting groove 323 penetrates through the sliding portion 33 along the axial direction of the sliding groove 32. The sliding rod 232 of the rotating disk 23 is a detachable structure, and the outer end of the sliding rod 232 passes out of the arc-shaped limiting groove 323, and a limiting member 233 with a diameter larger than the width of the sliding groove 32 is arranged on the outer end of the sliding rod 232. The detachable sliding rod 232 facilitates the cooperation between the rotating disk 23 and the sliding groove 32.

[0047] In this embodiment, corresponding arc-shaped limiting grooves 323 are provided on both side walls of the sliding groove 32.

[0048] Moreover, in this embodiment, the sliding rod 232 takes the rod axially passing through the through hole 234 on the rotating disk 23 as an example.

[0049] The two outer ends of the sliding rod 232 respectively pass out of the two arc-shaped limiting grooves 323; the limiting member 233 can be a nut, and this nut performs axial limiting. There is a distance between the nuts on both sides of the sliding portion 33 and the outer wall of the sliding portion 33 to avoid affecting the sliding of the sliding rod 232.

[0050] Furthermore, in this embodiment, angle braces 34 are respectively provided on both sides of the sliding portion 33 perpendicular to the axial direction of the sliding groove 32. The side surface of the angle brace 34 is closely attached to the side wall of the sliding portion 33, and the bottom surface is closely attached to the top surface of the base 3. The angle braces 34 can better disperse and offset the reaction force from the jack 4, making the structure more durable.

[0051] A positioning ring 213 is provided on the top surface of the detection disk 21, and the positioning groove 212 is formed between the positioning rings 213.

[0052] At least one carrying handle 35 is provided on the base 3 to facilitate the handling of the device.

[0053] The above are only the preferred embodiments of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. All technical solutions falling within the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that for those of ordinary skill in the art, equivalent changes and modifications made without departing from the principle of the present utility model should still fall within the protection scope of the present utility model.

[0054] In the description of the embodiments of the present application, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0055] In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

Claims

1. An auxiliary device for detecting the bearing capacity of an anchor rod, characterized in that: It includes a clamp, a detection platform and a base; The base is provided with a through hole on the base, and sliding grooves are arranged on both sides of the through hole on the base. The top surface of the sliding groove is open, and the bottom surface is an arc bottom surface; The detection platform includes a detection disc, two connecting pieces and two rotating discs. The detection disc is provided with a detection through hole, and the top surface of the detection disc is provided with a positioning groove; the two connecting pieces and the two rotating discs are respectively arranged on both sides of the detection through hole under the detection disc, and the connecting piece on the same side connects the top surface of the rotating disc on the same side and the bottom surface of the detection disc. The bottom surface of each rotating disc is provided with an arc surface; The two rotating discs respectively extend into the sliding grooves on both sides of the through hole on the base from the openings of the sliding grooves and are rotatably matched in the sliding grooves. The arc surface of the rotating disc is matched with the arc bottom surface of the sliding groove, so that the whole detection platform is rotatably matched with the base, and at the same time the detection through hole is always aligned with the through hole on the base; The side wall of the sliding groove is provided with an arc-shaped limiting groove concentric with the arc bottom surface. The side wall of the rotating disc is provided with a sliding rod extending into the arc-shaped limiting groove, and the sliding rod can slide along the arc-shaped limiting groove; The positioning groove on the top surface of the detection disc of the detection platform is used for installing a jack; the jack is a hollow jack, and the hollow jack is aligned with the detection through hole; The clamp is used for detachably connecting with the anchor rod, and is arranged outside the force application end of the jack away from the detection platform and is pushed by the force application end.

2. The detection auxiliary device for the bearing capacity of an anchor rod according to claim 1, characterized in that: The base is provided with a protruding sliding part; the sliding groove is recessed in the sliding part.

3. The detection auxiliary device for the bearing capacity of an anchor rod according to claim 2, wherein: The through hole on the base is a long hole; the sliding part is a rectangular body arranged along the length direction of the long hole; the axial direction of the sliding groove is perpendicular to the length direction of the long hole.

4. The detection auxiliary device for the bearing capacity of an anchor rod according to claim 2, characterized in that: The arc-shaped limiting groove penetrates the sliding part along the axial direction of the sliding groove. The sliding rod of the rotating disc is a detachable structure, and the outer end of the sliding rod penetrates out of the arc-shaped limiting groove, and a limiting part with a diameter larger than the width of the sliding groove is arranged on the outer end of the sliding rod.

5. The detection auxiliary device for the bearing capacity of an anchor rod according to claim 4, wherein: Corresponding arc-shaped limiting grooves are arranged on both side walls of the sliding groove; the sliding rod is a rod axially passing through the through hole on the rotating disc, and the two outer ends of the sliding rod respectively penetrate out of the two arc-shaped limiting grooves; the limiting part is a nut, and the nut performs axial limiting, and there is a distance between the nuts on both sides of the sliding part and the outer wall of the sliding part respectively.

6. The detection auxiliary device for the bearing capacity of an anchor rod according to claim 2, characterized in that: Angle braces are respectively arranged on both sides of the sliding part perpendicular to the axial direction of the sliding groove. The side surface of the angle brace is tightly attached to the side wall of the sliding part, and the bottom surface is tightly attached to the top surface of the base.

7. An auxiliary device for detecting the bearing capacity of an anchor rod according to claim 1, characterized in that: The top surface of the detection disc is provided with a positioning ring, and the positioning groove is formed between the positioning rings.

8. The detection auxiliary device for the bearing capacity of an anchor rod according to claim 1, characterized in that: At least one lifting rod is arranged on the base.

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