A highway engineering tunnel steel bar anchor rod drawing test auxiliary positioning support

Abstract

The utility model relates to the technical field of engineering construction, concretely relates to a highway engineering tunnel reinforcing steel bar anchor rod drawing test auxiliary positioning support, including support body and angle adjusting mechanism, angle adjusting mechanism includes base, locking piece and rotating component, locking piece and base detachable connection, rotating component includes handle, worm, support, worm wheel and transmission arm, handle and base swing joint, one end of worm and handle fixed connection, the other end of worm and base swing joint, support and base swing joint, worm wheel and support fixed connection, worm wheel and worm cooperate, transmission arm and support fixed connection, the other end of transmission arm and support body fixed connection, by this method can effectively solve the problem that when angle adjustment depends on arc slide notch, cannot adapt to the anchor rod detection of tunnel vault and side wall and other large slope area.

Description

Technical Field

[0001] This utility model relates to the field of engineering construction technology, and in particular to an auxiliary positioning support for pull-out testing of steel anchor bolts in highway engineering tunnels. Background Technology

[0002] Currently, during tunnel construction, steel anchor rods are driven into the tunnel lining. In later testing, a pull-out test is conducted on the lining surface to detect the bond strength of the anchor rods and thus determine the anchoring strength. However, during the driving of the tunnel anchor rods, problems such as deformation and bending at the ends may occur. In addition, the tunnel profile is an arched curved surface, which is not conducive to the installation of pull-out pads, and is very likely to cause problems such as jack loosening and inaccurate data collection during the pull-out test.

[0003] To address the aforementioned issues, existing patent (CN223021711U) discloses an auxiliary positioning support for a pull-out test of steel anchor bolts in highway engineering tunnels. This support includes a wedge-shaped base with anchor bolt supports symmetrically arranged on both sides. A semi-circular shaft movable support is rotatably positioned between the anchor bolt supports. A detachable positioning sleeve is provided at the top of the semi-circular shaft movable support. An anchor bolt elongation scale is also provided at the top of each anchor bolt support. Mounting and fixing pads are fixedly connected to both sides of each anchor bolt support by fastening bolts. Arc-shaped sliding grooves are provided on each mounting and fixing pad, and connecting pins that are fixedly connected to the semi-circular shaft movable support are slidably installed within these grooves. An anchor bolt elongation scale is vertically positioned at the top of the anchor bolt support located on one side of the semi-circular shaft movable support. Lubricating grease is also filled between the semi-circular shaft movable support and the anchor bolt support.

[0004] However, the existing technologies mentioned above, which rely on arc-shaped sliding grooves to adjust the angle, cannot adapt to anchor bolt detection in areas with large slopes such as tunnel arches and sidewalls. Utility Model Content

[0005] The purpose of this utility model is to provide an auxiliary positioning support for the pull-out test of steel anchor bolts in highway engineering tunnels, which solves the technical problem that the existing technology, which relies on arc-shaped sliding grooves to adjust the angle, cannot adapt to the anchor bolt testing in areas with large slopes such as the tunnel arch and sidewalls.

[0006] To achieve the above objectives, this utility model employs an auxiliary positioning support for pull-out tests of reinforced anchor bolts in highway engineering tunnels, comprising a support body and an angle adjustment mechanism. The angle adjustment mechanism includes a base, a locking component, and a rotating assembly. The locking component is detachably connected to the base and located at one end of the base. The rotating assembly includes a handle, a worm gear, a support rod, a worm wheel, and a transmission arm. The handle is rotatably connected to the base and located on one side of the base, penetrating through the base. One end of the worm gear is fixedly connected to the handle and located at one end of the handle. The other end of the worm gear is rotatably connected to the base and located inside the base. The support rod is rotatably connected to the base and located inside the base. The worm wheel is fixedly connected to the support rod and located at one end of the support rod, cooperating with the worm gear. The transmission arm is fixedly connected to the support rod and located at one end of the support rod. The other end of the transmission arm is fixedly connected to the support body and located at the lower end of the support body.

[0007] The locking component includes a button, a support arm, a fixing rod, and a spring. The button is slidably connected to the handle and located at one end of the handle. The spring is fixedly connected to both the button and the handle and located at one end of both the button and the handle. The support arm is rotatably connected to the button and located on one side of the button. One end of the fixing rod is rotatably connected to the support arm and located at one end of the support arm. The other end of the fixing rod is slidably connected to the handle and located inside the handle.

[0008] The locking component further includes a slider, one end of which is fixedly connected to the fixing rod and located on one side of the fixing rod, and the other end of which is slidably connected to the handle and located at one end of the handle.

[0009] The base has two grooves that mate with the transmission arm.

[0010] The base further includes a bracket, which is fixedly connected to the base and located at one end of the base. The support rod is rotatably connected to the bracket and located at one end of the bracket.

[0011] This utility model discloses an auxiliary positioning support for pull-out testing of reinforced anchor bolts in highway engineering tunnels. In practical use, pressing the locking element connects the handle to the worm gear. Rotating the handle then drives the worm gear to rotate, which in turn drives the worm wheel to rotate. The worm wheel then drives the support rod to rotate on the base. The support rod, through the transmission arm, drives the support body to rotate, thereby adjusting the angle of the anchor bolt. After adjustment, releasing the locking element separates the handle from the worm gear. This method effectively solves the problem that relying on an arc-shaped sliding groove for angle adjustment is unsuitable for anchor bolt testing in steep slope areas such as tunnel arches and sidewalls. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0013] Figure 1 is a structural schematic diagram of an auxiliary positioning support for pull-out testing of steel anchor bolts in highway engineering tunnels according to this utility model.

[0014] Figure 2 is a side view of an auxiliary positioning support for pull-out testing of steel anchor bolts in highway engineering tunnels according to this utility model.

[0015] Figure 3 is a cross-sectional view of the structure along line AA of Figure 2 of this utility model.

[0016] Figure 4 is an enlarged view of the structure at point B in Figure 3 of this utility model.

[0017] 101-Support body, 102-Base, 103-Handle, 104-Worm, 105-Support rod, 106-Worm wheel, 107-Transmission arm, 108-Button, 109-Support arm, 110-Fixing rod, 111-Spring, 112-Groove, 113-Bracket, 114-Slider. Detailed Implementation

[0018] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0019] Please refer to Figures 1 to 4. Figure 1 is a structural schematic diagram of an auxiliary positioning support for pull-out testing of steel anchor bolts in highway engineering tunnels according to the present invention. Figure 2 is a side view of an auxiliary positioning support for pull-out testing of steel anchor bolts in highway engineering tunnels according to the present invention. Figure 3 is a sectional view of the structure along line AA in Figure 2 of the present invention. Figure 4 is an enlarged view of the structure at point B in Figure 3 of the present invention.

[0020] This utility model provides an auxiliary positioning support for pull-out testing of steel anchor bolts in highway engineering tunnels, including a support body 101, a base 102, a handle 103, a worm gear 104, a support rod 105, a worm wheel 106, a transmission arm 107, a button 108, a support arm 109, a fixing rod 110, a spring 111, a bracket 113, and a slider 114. The aforementioned solution solves the problem that when relying on an arc-shaped sliding groove for angle adjustment, it cannot adapt to anchor bolt testing in steep slope areas such as tunnel arches and sidewalls.

[0021] In this specific embodiment, the angle adjustment mechanism includes a base 102, a locking member, and a rotating assembly. The locking member is detachably connected to the base 102 and is located at one end of the base 102. The rotating assembly includes a handle 103, a worm gear 104, a support rod 105, a worm wheel 106, and a transmission arm 107. The handle 103... The support rod 105 is rotatably connected to the base 102 and located on one side of the base 102, penetrating the base 102. One end of the worm gear 104 is fixedly connected to the handle 103 and located at one end of the handle 103. The other end of the worm gear 104 is rotatably connected to the base 102 and located inside the base 102. The support rod 105 is rotatably connected to the base 102 and located inside the base 102. The worm wheel 106 is fixedly connected to the support rod 105 and located at one end of the support rod 105. The worm wheel 106 cooperates with the worm gear 104. The transmission arm 107 is fixedly connected to the support rod 105 and located at one end of the support rod 105. The other end of the transmission arm 107 is fixedly connected to the support body 101 and located at the lower end of the support body 101. The support body 101... Provided by existing technology patent CN223021711U, the anchor rod is installed on the support body 101. The handle 103 is connected to the worm gear 104 by pressing the locking member. Then, the handle 103 is rotated, which drives the worm gear 104 to rotate. The worm gear 104 drives the worm wheel 106 to rotate, and the worm wheel 106 drives the support rod. 105 rotates on the base 102, and the support rod 105 drives the support body 101 to rotate through the transmission arm 107, thereby adjusting the angle of the anchor rod. After adjustment, the locking member is released, and the locking member separates the handle 103 from the worm gear 104. This method can effectively solve the problem that anchor rod detection in areas with large slopes such as tunnel arches and sidewalls cannot be adapted when relying on the arc-shaped sliding groove for angle adjustment.

[0022] The locking mechanism includes a button 108, a support arm 109, a fixing rod 110, and a spring 111. The button 108 is slidably connected to the handle 103 and is located at one end of the handle 103. The spring 111 is fixedly connected to both the button 108 and the handle 103 and is located at one end of both. The support arm 109 is rotatably connected to the button 108 and is located on one side of the button 108. One end of the fixing rod 110 is rotatably connected to the support arm 109 and is located at one end of the support arm 109. The other end of the fixing rod 110 is slidably connected to the handle 103 and is located inside the handle 103. When the button 108 is pressed, the button 108 moves the support arm 109, simultaneously compressing the spring 111. The support arm 109 then moves the fixing rod 110 to the handle 103. The handle 103 is moved upwards and thus removed from the worm gear 104, thereby connecting the handle 103 and the worm gear 104.

[0023] The locking component further includes a slider 114, one end of which is fixedly connected to the fixing rod 110 and located on one side of the fixing rod 110, and the other end of which is slidably connected to the handle 103 and located at one end of the handle 103. The slider 114 serves to limit the fixing rod 110.

[0024] Secondly, the base 102 has two grooves 112 that mate with the transmission arm 107.

[0025] Meanwhile, the base 102 also includes a bracket 113, which is fixedly connected to the base 102 and located at one end of the base 102. The support rod 105 is rotatably connected to the bracket 113 and located at one end of the bracket 113. The bracket 113 is used to install the support rod 105.

[0026] Using the auxiliary positioning support for the pull-out test of steel anchor bolts in a highway engineering tunnel according to this embodiment, when in use, pressing the button 108 moves the support arm 109, simultaneously compressing the spring 111. The support arm 109 then moves the fixing rod 110 on the handle 103, thus removing the handle 103 and inserting it into the worm gear 104, thereby connecting the handle 103 and the worm gear 104. Subsequently, rotating the handle 103 causes the worm gear 104 to rotate, which in turn causes the worm wheel 106 to rotate, and the worm wheel 106 then drives the support rod. 105 rotates on the bracket 113. The support rod 105 drives the support body 101 to rotate on the two grooves 112 through the transmission arm 107, thereby adjusting the angle of the anchor rod. After adjustment, the button 108 is released, and the spring 111 resets it, causing the fixing rod 110 to move out of the worm gear 104, and the handle 103 to separate from the worm gear 104. This method can effectively solve the problem that anchor rod detection in areas with large slopes such as tunnel arches and sidewalls cannot be adapted when relying on the arc-shaped sliding groove for angle adjustment.

[0027] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. An auxiliary positioning support for pull-out testing of reinforced concrete anchor bolts in highway engineering tunnels, comprising a support body, characterized in that, It also includes an angle adjustment mechanism; The angle adjustment mechanism includes a base, a locking component, and a rotating assembly. The locking component is detachably connected to the base and located at one end of the base. The rotating assembly includes a handle, a worm gear, a support rod, a worm wheel, and a transmission arm. The handle is rotatably connected to the base, located on one side of the base, and passes through the base. One end of the worm gear is fixedly connected to the handle and located at one end of the handle. The other end of the worm gear is rotatably connected to the base and located inside the base. The support rod is rotatably connected to the base and located inside the base. The worm wheel is fixedly connected to the support rod and located at one end of the support rod, and the worm wheel cooperates with the worm gear. The transmission arm is fixedly connected to the support rod and located at one end of the support rod. The other end of the transmission arm is fixedly connected to the support body and located at the lower end of the support body.

2. The auxiliary positioning support for pull-out testing of reinforced concrete anchor bolts in highway engineering tunnels according to claim 1, characterized in that, The locking component includes a button, a support arm, a fixing rod, and a spring. The button is slidably connected to the handle and located at one end of the handle. The spring is fixedly connected to both the button and the handle and located at one end of both the button and the handle. The support arm is rotatably connected to the button and located on one side of the button. One end of the fixing rod is rotatably connected to the support arm and located at one end of the support arm. The other end of the fixing rod is slidably connected to the handle and located inside the handle.

3. The auxiliary positioning support for pull-out testing of reinforced concrete anchor bolts in highway engineering tunnels according to claim 2, characterized in that, The locking component also includes a slider, one end of which is fixedly connected to the fixing rod and located on one side of the fixing rod, and the other end of which is slidably connected to the handle and located at one end of the handle.

4. The auxiliary positioning support for pull-out testing of reinforced concrete anchor bolts in highway engineering tunnels according to claim 3, characterized in that, The base has two grooves that mate with the transmission arm.

5. The auxiliary positioning support for pull-out testing of reinforced concrete anchor bolts in highway engineering tunnels according to claim 4, characterized in that, The base also includes a bracket, which is fixedly connected to the base and located at one end of the base. The support rod is rotatably connected to the bracket and located at one end of the bracket.

Images