Tunnel sprayed concrete bonding performance testing device

Abstract

The utility model discloses a device for testing the bonding performance of tunnel sprayed concrete, and relates to the technical field of material performance testing. The device comprises a base, four corners of the bottom of the base are fixedly connected with supporting legs, the top of the base is fixedly connected with a display screen, the top of the base is fixedly connected with a first fixing block, the right side of the first fixing block is provided with a simulation assembly, the simulation assembly comprises a rotating handle, and the bottom of the rotating handle is fixedly connected with a threaded rod. The outer surface of the threaded rod is rotationally connected with a second fixing block. According to the utility model, the simulation assembly is arranged, specifically, a nut is rotated anticlockwise to loosen a bolt, two fixing blocks II move annularly according to the size of concrete, the fixing blocks are fixed by rotating the nut anticlockwise, so that the fixing blocks do not move during testing, and a rotating handle is rotated clockwise to fix the concrete in two clamping blocks; the concrete blocks can restore the environment in the tunnel when being detected in the device, and the accuracy of the detection result of the device is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of material performance testing, in particular to a tunnel shotcrete bonding performance testing device. Background Art

[0002] With the rapid development of social economy, railway construction has made great progress and the scale of tunnel engineering has been continuously expanded. Sprayed concrete is widely used in tunnel engineering, which has the functions of geological support, waterproofing and water blocking, and maintaining the overall stability of the tunnel during the construction and operation stages, which ensures the structural safety and reliable operation of the tunnel, and also improves the service life and sustainability of the tunnel.

[0003] When testing the bonding performance of tunnel shotcrete, the existing device usually places the concrete block flat on a workbench for testing. Since the tunnel is annular in shape, the concrete block cannot be perfectly restored to the state inside the tunnel, making the test results of the device on the concrete block inaccurate. Utility Model Content

[0004] The purpose of the utility model is to provide a tunnel shotcrete bonding performance testing device. By setting a simulation component, the concrete block can restore the environmental state in the tunnel during testing, which solves the problem that when the existing device tests the bonding performance of tunnel shotcrete, the concrete block is usually placed flat on a workbench for testing. Since the tunnel is annular in shape, the concrete block cannot be perfectly restored to the state inside the tunnel, resulting in inaccurate test results for the concrete block.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model is a tunnel shotcrete bonding performance testing device, comprising a base, wherein the four corners of the bottom of the base are fixedly connected with supporting legs, the top of the base is fixedly connected with a display screen, the top of the base is fixedly connected with a fixed block 1, the right side of the fixed block 1 is provided with a simulation component, the simulation component comprises a turning handle, the bottom of the turning handle is fixedly connected with a threaded rod, the outer surface of the threaded rod is rotatably connected with a fixed block 2, the outer surface of the threaded rod is threadedly connected with a movable clamping block, and the outer surface of the threaded rod is wound with a spring 1. By arranging the simulation component, the concrete block can simulate the environmental state inside the tunnel during detection, thereby improving the accuracy of the detection result of the device.

[0007] Furthermore, the bottom of the spring one is fixedly connected to the inner wall of the fixed block two, the top of the spring one is fixedly connected to the bottom of the movable clamping block, the right side of the fixed block two is fixedly connected with a fixed clamping plate, the right side of the fixed block one is provided with a groove, and the inner wall of the groove is fixedly connected with a round rod one. By providing the round rod one, the fixed block two can move quickly, which improves the working efficiency of the device.

[0008] Furthermore, a movable block 1 is slidably connected to the outer surface of the round rod 1, and the right side of the movable block 1 is fixedly connected to the left side of the fixed block 2. The front side of the threaded rod is fixedly connected to a fixed block 3. The inner wall of the fixed block 3 is slidably connected to a bolt, and the outer surface of the bolt is threadedly connected to a nut. The right side of the fixed block 1 is fixedly connected to a slideway, and the inner wall of the slideway contacts the outer surface of the bolt. By setting the bolt, the fixed block 2 will not move when the concrete block is detected, thereby avoiding detection failure of the device.

[0009] Furthermore, a test assembly is provided on the top of the base, and the test assembly includes an electric push rod, the top of the electric push rod is fixedly connected to the bottom of the base, the left output end of the electric push rod is fixedly connected to a telescopic rod, and the left side of the telescopic rod is fixedly connected to a moving block 2. By setting up the test assembly, the staff can observe the pressure borne by the concrete block at any time, thereby improving the practicability of the device.

[0010] Furthermore, the inner wall of the movable block 2 is slidably connected to a round rod 2, the left and right sides of the round rod 2 are fixedly connected to baffles, the top of the movable block 2 is fixedly connected to an outer box, the left side of the outer box is slidably connected to a drill bit, and the inner wall of the outer box is fixedly connected to an inner box. By providing the round rod 2, the movable block 2 can be more stable when moving.

[0011] Furthermore, a movable plate 1 is slidably connected to the inner wall of the inner box, a pressure sensor is fixedly connected to the right side of the movable plate 1, the right side of the pressure sensor contacts a movable plate 2, the outer surface of the movable plate 2 is slidably connected to the inner wall of the inner box, a plurality of springs 2 are fixedly connected to the right side of the movable plate 2, the right side of the springs 2 are fixedly connected to the inner wall of the inner box, and by providing the spring 2, the accuracy of the pressure sensor detection is improved.

[0012] The utility model has the following beneficial effects:

[0013] 1. The utility model sets a simulation component, specifically, the nut is rotated counterclockwise to loosen the bolt, and the two fixed blocks are moved in a ring shape according to the size of the concrete. The fixed block is fixed by rotating the nut counterclockwise so that it will not move during the test, and the concrete is fixed in the two clamping blocks by rotating the handle clockwise, so that the concrete block can restore the environment inside the tunnel when detecting inside the device, thereby improving the accuracy of the detection result of the device.

[0014] 2. The utility model sets a test component, specifically, opens the electric push rod to push the outer box and the drill bit to the left. When the left side of the drill bit contacts the concrete surface, the drill bit pushes the movable plate 1. During the movement of the movable plate 1, the pressure sensor and the movable plate 2 are pushed to the right inside the inner box. The movable plate 2 deforms the spring 2. The spring 2 generates a thrust to the left so that the pressure sensor can detect the change in pressure. The result is displayed on the display screen, so that the staff can observe the pressure borne by the concrete block at any time, thereby improving the practicality of the device.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings required for describing the embodiment will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the overall structure of the fixing block of the utility model;

[0019] Figure 3 For this utility model Figure 2 A is a schematic diagram of the enlarged structure of the middle part;

[0020] Figure 4 This is a schematic diagram of the overall structure of the second moving block of the utility model;

[0021] Figure 5 This is a schematic diagram of the overall structure of the outer box of the utility model;

[0022] Figure 6 It is a schematic diagram of the overall structure of the outer box of the utility model in front cross-section.

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 1. Base; 2. Support legs; 3. Display screen; 4. Fixed block 1; 11. Simulation component; 111. Turning handle; 112. Threaded rod; 113. Moving clamp; 114. Spring 1; 115. Fixed clamp; 116. Fixed block 2; 117. Moving block 1; 118. Round rod 1; 119. Slide; 120. Bolt; 121. Fixed block 3; 122. Nut; 22. Test component; 221. Electric push rod; 222. Baffle; 223. Telescopic rod; 224. Moving block 2; 225. Round rod 2; 226. Outer box; 227. Drill bit; 228. Inner box; 229. Moving plate 1; 230. Pressure sensor; 231. Moving plate 2; 232. Spring 2. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-6 As shown, the utility model is a tunnel shotcrete bonding performance testing device, including a base 1, the four corners of the bottom of the base 1 are fixedly connected to support legs 2, the top of the base 1 is fixedly connected to a display screen 3, the top of the base 1 is fixedly connected to a fixed block 4, the right side of the fixed block 4 is provided with a simulation component 11, the simulation component 11 includes a turning handle 111, the bottom of the turning handle 111 is fixedly connected to a threaded rod 112, the outer surface of the threaded rod 112 is rotatably connected to a fixed block 116, and the outer surface of the threaded rod 112 is threadedly connected to a movable clamping block 113 A spring 114 is wound around the outer surface of the threaded rod 112. The simulation component 11 is set, specifically, the nut 122 is rotated counterclockwise to loosen the bolt 120, and the two fixing blocks 116 are moved in a circle according to the size of the concrete. The fixing blocks 116 are fixed by rotating the nut 122 counterclockwise so that they will not move during the test. The concrete is fixed in the two clamping blocks by rotating the handle 111 clockwise, so that the concrete blocks can restore the environment inside the tunnel when detecting inside the device, thereby improving the accuracy of the detection results of the device.

[0027] The bottom of spring 114 is fixedly connected to the inner wall of fixed block 2 116, the top of spring 114 is fixedly connected to the bottom of movable clamping block 113, the right side of fixed block 2 116 is fixedly connected to fixed clamping plate 115, the right side of fixed block 14 is provided with a groove, the inner wall of the groove is fixedly connected to round rod 118.

[0028] The outer surface of the round rod 118 is slidably connected with a moving block 117, and the right side of the moving block 117 is fixedly connected to the left side of the fixed block 2 116. The front side of the threaded rod 112 is fixedly connected with a fixed block 3 121, and the inner wall of the fixed block 3 121 is slidably connected with a bolt 120, and the outer surface of the bolt 120 is threadedly connected with a nut 122. The right side of the fixed block 4 is fixedly connected with a slideway 119, and the inner wall of the slideway 119 contacts the outer surface of the bolt 120.

[0029] A test assembly 22 is provided on the top of the base 1, and the test assembly 22 includes an electric push rod 221. The top of the electric push rod 221 is fixedly connected to the bottom of the base 1, and a telescopic rod 223 is fixedly connected to the output end on the left side of the electric push rod 221. A moving block 224 is fixedly connected to the left side of the telescopic rod 223. By setting the test assembly 22, specifically, the electric push rod 221 is opened to push the outer box 226 and the drill bit 227 to move to the left. When the left side of the drill bit 227 contacts the concrete surface, the drill bit 227 will push the moving plate 1 229. During the movement of the moving plate 1 229, the pressure sensor 230 and the moving plate 2 231 will be pushed to the right inside the inner box 228. The moving plate 231 will cause the spring 232 to deform, and the spring 232 will generate a thrust to the left so that the pressure sensor 230 can detect the change in pressure. The result is displayed on the display screen 3, so that the staff can observe the pressure borne by the concrete block at any time, thereby improving the practicality of the device.

[0030] The inner wall of the second moving block 224 is slidably connected to a second round rod 225, the left and right sides of the second round rod 225 are fixedly connected to baffles 222, the top of the second moving block 224 is fixedly connected to an outer box 226, the left side of the outer box 226 is slidably connected to a drill bit 227, and the inner wall of the outer box 226 is fixedly connected to an inner box 228.

[0031] The inner wall of the inner box 228 is slidably connected to a movable plate 1 229, the right side of the movable plate 1 229 is fixedly connected to a pressure sensor 230, the right side of the pressure sensor 230 contacts a movable plate 231, the outer surface of the movable plate 231 is slidably connected to the inner wall of the inner box 228, the right side of the movable plate 231 is fixedly connected to a plurality of springs 232, and the right side of the springs 232 is fixedly connected to the inner wall of the inner box 228.

[0032] A specific application of this embodiment is as follows: first, the bolt 120 is loosely connected to the slideway 119 by rotating the nut 122 counterclockwise, and the movable block 117 is moved on the outer surface of the round rod 118 by pushing the two fixed blocks 116. The two fixed blocks 116 are adjusted according to the size of the concrete sample, and the bolt 120 is moved to the right by rotating the nut 122 clockwise to fix the fixed block 116. When the concrete is tested, no movement occurs, which causes inaccurate test results. The two ends of the concrete are placed on the top of the two fixed clamping plates 115 respectively, and the threaded rod 112 is driven to rotate inside the fixed block 116 by rotating the handle 111 clockwise. During the rotation of the fixed block 116, the movable clamping block 113 is driven to move downward to fix the concrete in the two clamping blocks, so that the concrete can be installed. The environment inside the device is simulated to improve the accuracy of the detection result of the device. The electric push rod 221 is turned on to drive the telescopic rod 223 to extend and retract to the left. During the extension and retraction of the telescopic rod 223, the moving block 224 is pushed to move leftward on the outer surface of the two round rods 225. During the movement of the moving block 224, the outer box 226 and the drill bit 227 are driven to move leftward. When the left side of the drill bit 227 contacts the concrete surface, the drill bit 227 pushes the moving plate 1 229. During the movement of the moving plate 1 229, the pressure sensor 230 and the moving plate 2 231 are pushed to move rightward inside the inner box 228. The moving plate 231 can deform the spring 232. The spring 232 will generate a thrust to the left so that the pressure sensor 230 can detect the change in pressure, and the result is displayed on the display screen 3.

[0033] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0034] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A tunnel shotcrete bonding performance testing device, comprising a base (1), wherein the four corners of the bottom of the base (1) are fixedly connected to support legs (2), the top of the base (1) is fixedly connected to a display screen (3), and the top of the base (1) is fixedly connected to a fixing block (4), characterized in that: A simulation component (11) is arranged on the right side of the fixing block 1 (4); The simulation component (11) includes a turning handle (111), the bottom of the turning handle (111) is fixedly connected to a threaded rod (112), the outer surface of the threaded rod (112) is rotatably connected to a fixed block 2 (116), the outer surface of the threaded rod (112) is threadedly connected to a movable clamping block (113), the outer surface of the threaded rod (112) is wound with a spring 1 (114), the bottom of the spring 1 (114) is fixedly connected to the inner wall of the fixed block 2 (116), the top of the spring 1 (114) is fixedly connected to the bottom of the movable clamping block (113), the right side of the fixed block 2 (116) is fixedly connected to a fixed clamping plate (115), the right side of the fixed block 1 (4) is provided with a groove, the inner wall of the groove is fixedly connected to a round rod 1 (118), and the base (1) A test assembly (22) is arranged at the top, the test assembly (22) comprising an electric push rod (221), the top of the electric push rod (221) is fixedly connected to the bottom of the base (1), the left output end of the electric push rod (221) is fixedly connected to a telescopic rod (223), the left side of the telescopic rod (223) is fixedly connected to a second moving block (224), the inner wall of the second moving block (224) is slidably connected to a second round rod (225), the left and right sides of the second round rod (225) are fixedly connected to a baffle (222), the top of the second moving block (224) is fixedly connected to an outer box (226), the left side of the outer box (226) is slidably connected to a drill bit (227), and the inner wall of the outer box (226) is fixedly connected to an inner box (228).

2. A tunnel shotcrete bonding performance testing device according to claim 1, characterized in that: The outer surface of the round rod one (118) is slidably connected to a moving block one (117), the right side of the moving block one (117) is fixedly connected to the left side of the fixed block two (116), the front side of the threaded rod (112) is fixedly connected to a fixed block three (121), the inner wall of the fixed block three (121) is slidably connected to a bolt (120), the outer surface of the bolt (120) is threadedly connected to a nut (122), the right side of the fixed block one (4) is fixedly connected to a slideway (119), the inner wall of the slideway (119) is in contact with the outer surface of the bolt (120).

3. A tunnel shotcrete bonding performance testing device according to claim 2, characterized in that: The inner wall of the inner box (228) is slidably connected to a movable plate 1 (229), the right side of the movable plate 1 (229) is fixedly connected to a pressure sensor (230), and the right side of the pressure sensor (230) contacts a movable plate 2 (231).

4. A tunnel shotcrete bonding performance testing device according to claim 3, characterized in that: The outer surface of the second movable plate (231) is slidably connected to the inner wall of the inner box (228), and a plurality of second springs (232) are fixedly connected to the right side of the second movable plate (231), and the right side of the second springs (232) is fixedly connected to the inner wall of the inner box (228).

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