Chemical anchor automatic pull-out test equipment

Abstract

The invention discloses an automatic pulling test device for chemical anchor bolts, comprising a fixed base plate, a sliding device, a servo motor, a hollow oil cylinder, a pull rod, and a proximity switch; a mounting connection plate for mounting and connecting the servo motor is provided on the sliding device, and a cylinder support plate and a cylinder fixing plate for mounting and connecting the hollow oil cylinder are respectively provided on the fixed base plate; the servo motor is connected to the pull rod by transmission and drives it to rotate, and the hollow oil cylinder is connected to a hydraulic station through an oil pipe; the pull rod passes through the hollow oil cylinder, and a positioning pad is fixed on it. During the axial movement of the pull rod, the positioning pad triggers the proximity switch, thereby feedback controlling the servo motor to stop rotating, and the hollow oil cylinder pushes out against the positioning pad to push the pull rod; the end of the pull rod in the hollow oil cylinder is provided with a threaded tightening hole. The invention can quickly complete the pulling test, greatly improve the efficiency of the pulling test, and the pulling test is automatically completed by setting during the pulling test, thereby improving the accuracy of the pulling test.

Description

Technical Field

[0001] The invention specifically relates to an automatic pulling test device for chemical anchor bolts, which is used for automatically pulling test of chemical anchor bolts in holes after drilling and planting bolts in tunnels. Background Art

[0002] Chemical anchor bolts are a new type of fastening material, composed of chemical adhesive and metal rod. They can be used for fixing and installing pre-embedded parts in roads, bridges, and tunnels, and can also be used for installing post-embedded parts in various curtain walls and marble dry hanging construction.

[0003] After the chemical anchor is installed and fixed, a pull-out test is performed, that is, a set pull-out force is applied to the anchor. The test shows that the anchor fixation meets the design requirements or the anchor fixation is unqualified and loose. Most of the existing pull-out test methods are manual pull-out tests, which use a tensile gauge to apply a preset pull-out force to the anchor. The existing pull-out test generally requires two people to complete, the work intensity of the testers is high, the test efficiency is low, and the manual pull-out test control will affect the accuracy of the test; therefore, it is very necessary to improve the pull-out test methods for chemical anchors in the later stage. Summary of the invention

[0004] The purpose of the present invention is to solve the problems raised in the above background technology and provide an automatic pull-out test device for chemical anchors to reduce the labor intensity of workers, improve the efficiency of pull-out tests, and improve the accuracy of pull-out tests.

[0005] To achieve the above-mentioned purpose, the technical solution of the present invention is: a chemical anchor automatic pulling test equipment, including a fixed base plate, a sliding device, a servo motor, a hollow oil cylinder, a pull rod, and a proximity switch; the sliding device is provided with a mounting connecting plate for installing and connecting the servo motor, and the sliding device can drive the mounting connecting plate to slide relative to it, and the fixed base plate is respectively provided with a cylinder support plate and a cylinder fixing plate for installing and connecting the hollow oil cylinder; the servo motor is connected to the pull rod for transmission and drives it to rotate, and the hollow oil cylinder is connected to a hydraulic station through an oil pipe, and the hydraulic station supplies oil to the hollow oil cylinder to drive it, the pull rod passes through the hollow oil cylinder and is fixed with a positioning pad, and during the axial movement of the pull rod, the proximity switch will be triggered through the positioning pad, thereby feedback controlling the servo motor to stop rotating, and the hollow oil cylinder is pushed out and pressed against the positioning pad to push the pull rod; the end of the pull rod in the hollow oil cylinder is provided with a threaded tightening hole.

[0006] This equipment is installed on the manipulator actuator for control and use. The visual camera on the manipulator actuator tests the anchor bolt position, and the manipulator can match the pull rod with the anchor bolt. The sliding device will drive the pull rod to move, and then the servo motor drives the pull rod to rotate and lock the threaded end of the anchor bolt. At the same time, the sliding device moves synchronously during the tightening process. After the pull rod and the anchor bolt are tightened, the servo motor stops rotating, the hydraulic station starts to pressurize the oil pressure to the set pressure, and the oil circuit pressure is converted into the ejection pressure of the hollow oil cylinder. The hollow oil cylinder presses on the positioning pad on the pull rod, and then it is converted into a pulling force on the anchor bolt through the pull rod. The pulling force is maintained for a period of time to automatically detect whether the pulling force of the chemical anchor bolt is qualified. Unqualified chemical anchor bolts will be pulled loose and displaced to reduce the oil circuit pressure. After the test is completed, the servo motor rotates in the opposite direction to drive the pull rod to rotate, and the sliding device retreats in the opposite direction, thereby separating from the chemical anchor bolt.

[0007] In the above-mentioned chemical anchor automatic pulling test equipment, a reducer is fixedly mounted on the mounting connection plate, the servo motor is mounted on the reducer and is transmission-connected thereto, and the reducer is connected to the pull rod.

[0008] In the above-mentioned chemical anchor automatic pulling test equipment, a universal coupling is provided between the reducer and the pull rod, and a docking tapered hole is provided at the end of the threaded tightening hole.

[0009] In the above-mentioned chemical anchor automatic pulling test equipment, a travel switch is provided at the end of the hollow oil cylinder, and the travel switch can control the movement contact control of the hollow oil cylinder.

[0010] In the above-mentioned chemical anchor automatic pulling test equipment, the hydraulic station is provided with a pressure sensor, and the pressure sensor is connected to the hollow oil cylinder through an oil pipe.

[0011] In the above-mentioned chemical anchor automatic pulling test equipment, a polyurethane buffer block is arranged in the cylinder fixing plate, and a fixing nut is arranged on the pull rod, which abuts against the side of the positioning pad to fix the positioning pad on the pull rod.

[0012] In the above-mentioned chemical anchor automatic pulling test equipment, the hollow oil cylinder is provided with a connecting frame plate for installing a travel switch and an oil pipe joint for connecting the oil pipe.

[0013] In the above-mentioned chemical anchor automatic pulling test equipment, the sliding device adopts a rodless cylinder.

[0014] By adopting the above technical solution, the present invention has the following beneficial effects:

[0015] The present invention is installed on a manipulator actuator for control and use, and can be operated by a tester. The manipulator actuator controls the pull rod in the equipment to correspond to the anchor bolt, and the subsequent locking, pulling, etc. can be completed automatically; the input of testers and the labor intensity of workers are reduced. The pull-out test can be completed quickly through the equipment, which greatly improves the efficiency of the pull-out test. The pull-out test process is automatically completed through setting, which improves the accuracy of the pull-out test. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 It is a three-dimensional structural diagram of the present invention connected with a hydraulic station;

[0018] Figure 3 It is a partial cross-sectional structure and use schematic diagram of the present invention. DETAILED DESCRIPTION

[0019] The present invention will be further described in conjunction with the accompanying drawings.

[0020] See also Figures 1 to 3 The present invention provides a chemical anchor automatic pulling test equipment, including a fixed base plate 1, a sliding device 2, a servo motor 3, a hollow oil cylinder 4, a pull rod 5, and a proximity switch 6; the equipment is installed on a manipulator actuator for control and use, and of course it can also be installed in conjunction with other mechanisms for use. The equipment is also connected to a hydraulic station 7, which is connected to the hollow oil cylinder 4 through an oil pipe 8, and the hydraulic station 7 supplies oil to drive the hollow oil cylinder 4. An oil pipe joint 9 connected to the oil pipe 8 is provided on the hollow oil cylinder 4. At the same time, the equipment has an automatic control device (not shown in the figure), and the automatic control device connects and controls the hydraulic station 7, the sliding device 2, the servo motor 3, and the proximity switch 6; the fixed base plate 1 is respectively provided with a cylinder support plate 10 and a cylinder fixing plate 11 for installing and connecting the hollow oil cylinder 4, the cylinder support plate 10 is fixedly connected to the hollow oil cylinder 4, and the cylinder fixing plate 11 can position the ejection movement of the hollow oil cylinder 4;

[0021] The sliding device 2 is fixedly mounted on the fixed base plate 1, and a mounting connecting plate 12 for mounting and connecting the servo motor 3 is provided on the sliding device 2. The sliding device 2 can drive the mounting connecting plate 12 to slide on it. Preferably, the sliding device 2 adopts a rodless cylinder, and the servo motor 3 is connected to the pull rod 5 in transmission to drive it to rotate. The pull rod 5 passes through the hollow oil cylinder 4, and a positioning pad 22 is fixed on it. The end of the pull rod 5 in the hollow oil cylinder 4 is provided with a threaded tightening hole 14; the threaded tightening hole 14 on the pull rod 5 is controlled by the manipulator actuator to correspond to the fixed chemical anchor 1-1, and the sliding device 2 drives the pull rod 5 to move, and the sliding device 2 moves synchronously during the tightening process; then the servo motor 3 drives the pull rod 5 to rotate, and the threaded tightening hole 14 at its end is locked with the threaded end of the anchor 1-1. During the axial movement of the pull rod 5, the proximity switch 6 is triggered by the positioning pad 22, so as to feedback control the servo motor 3 to stop rotating, thereby completing the anchor locking and the servo motor stopping rotation;

[0022] After the anchor bolt is locked, the hydraulic station 7 starts to pressurize the oil pressure to the set pressure, and the oil circuit pressure is converted into the ejection pressure of the hollow oil cylinder 4. The hollow oil cylinder 4 presses on the positioning pad 22 on the pull rod 5, thereby converting it into a pulling force on the anchor bolt through the pull rod 5. By maintaining the pulling force for a period of time, it is possible to automatically detect whether the pulling force of the chemical anchor bolt is qualified. Unqualified chemical anchor bolts will be pulled loose and displaced, causing the oil circuit pressure to decrease. After the test is completed, the servo motor 3 rotates in the opposite direction to drive the pull rod 5 to rotate, and the sliding device 2 retreats in the opposite direction, thereby separating from the chemical anchor bolt.

[0023] Furthermore, a reducer 15 is fixedly mounted on the mounting connection plate 12, the servo motor 3 is mounted on the reducer 15 and is transmission-connected thereto, and the reducer 15 is connected to the pull rod 5; the reducer 15 has the effect of reducing the rotation speed and increasing the torque.

[0024] Furthermore, a universal coupling 16 is provided between the reducer 15 and the pull rod 5, and a docking tapered hole 17 is provided at the end of the threaded tightening hole 14; the universal coupling 16 can arbitrarily rotate and adjust the angle of the transmission connection between the pull rod 5 and the reducer 15, on the one hand, the threaded tightening hole 14 at the end of the pull rod 5 can be docked with the end of the anchor bolt 1-1 more quickly through the docking tapered hole 17, and on the other hand, the pull rod 5 and the anchor bolt 1-1 remain coaxial during the tightening process.

[0025] Furthermore, a travel switch 18 is provided at the end of the hollow cylinder 4, and the travel switch 18 can control the movement and contact of the hollow cylinder 4. A connecting frame plate 19 for installing the travel switch 18 is provided on the hollow cylinder 4; when the manipulator actuator controls the overall test movement of the equipment, the travel switch 18 will first touch the wall fixed with the anchor bolt. After the travel switch 18 is triggered, the equipment will remain stationary, and the hollow cylinder 4 will contact the wall at this time, thereby preventing excessive movement and strong collision with the tunnel wall and the wall.

[0026] Furthermore, in order to better detect the pressure change of the hydraulic oil circuit, a pressure sensor 20 is provided on the hydraulic station 7, and the pressure sensor 20 can monitor the pressure change in the oil pipe 8.

[0027] Furthermore, a polyurethane buffer block 21 is provided in the cylinder fixing plate 11, and the polyurethane buffer block 21 can play a role of equipment buffering when the hollow cylinder 4 contacts the tunnel wall or wall surface; a fixing nut 13 is provided on the pull rod 5, and the fixing nut 13 abuts against the side of the positioning pad 22 to fix the positioning pad 22 on the pull rod 5.

[0028] The above is a detailed introduction to a chemical anchor automatic pulling test device provided by an embodiment of the present invention. Specific examples are used in this article to illustrate the principle and implementation mode of the present invention. The description of the above embodiments is only used to help understand the technical solution disclosed by the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be understood as a limitation of the present invention.

Claims

1. Automatic pull-out test equipment for chemical anchors, characterized by: It includes a fixed base plate, a sliding device, a servo motor, a hollow oil cylinder, a pull rod, and a proximity switch; the sliding device is provided with a mounting connection plate for mounting and connecting the servo motor, and the sliding device can drive the mounting connection plate to slide relative to it, and the fixed base plate is respectively provided with a cylinder support plate and a cylinder fixing plate for mounting and connecting the hollow oil cylinder; the servo motor is transmission-connected to the pull rod to drive it to rotate, and the hollow oil cylinder is connected to a hydraulic station through an oil pipe, and the hydraulic station supplies oil to the hollow oil cylinder to drive it; the pull rod passes through the hollow oil cylinder and is fixed with a positioning pad. During the axial movement of the pull rod, the proximity switch will be triggered through the positioning pad, thereby feedback-controlling the servo motor to stop rotating, and the hollow oil cylinder is pushed out and pressed against the positioning pad to push the pull rod; the end of the pull rod in the hollow oil cylinder is provided with a threaded tightening hole; A travel switch is provided at the end of the hollow cylinder, and the travel switch can control the movement contact control of the hollow cylinder; a polyurethane buffer block is provided in the cylinder fixing plate, and a fixing nut is provided on the pull rod, and the fixing nut abuts against the side of the positioning pad to fix the positioning pad on the pull rod.

2. The chemical anchor automatic pulling test equipment according to claim 1 is characterized by: A reducer is fixedly mounted on the mounting connection plate, the servo motor is mounted on the reducer and is transmission-connected to the reducer, and the reducer is connected to the pull rod.

3. The automatic pulling test equipment for chemical anchor bolts according to claim 2 is characterized in that: A universal coupling is arranged between the reducer and the pull rod, and a butt taper hole is arranged at the end of the threaded tightening hole.

4. The automatic pulling test equipment for chemical anchor bolts according to claim 1 is characterized in that: The hydraulic station is provided with a pressure sensor, which is connected to the hollow oil cylinder through an oil pipe.

5. The automatic pulling test equipment for chemical anchor bolts according to claim 1 is characterized in that: The hollow oil cylinder is provided with a connecting frame plate for installing a travel switch and an oil pipe joint for connecting an oil pipe.

6. The chemical anchor automatic pulling test equipment according to claim 1 is characterized by: The sliding device adopts a rodless cylinder.

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