CN210068215U

CN210068215U - Similar simulation experiment anchor rod device

Info

Publication number: CN210068215U
Application number: CN201920652954.9U
Authority: CN
Inventors: 梁维; 李响; 杨永; 王艺凡; 刘子维; 李恒
Original assignee: Guizhou Institute of Technology
Current assignee: Guizhou Institute of Technology
Priority date: 2019-05-09
Filing date: 2019-05-09
Publication date: 2020-02-14
Anticipated expiration: 2029-05-09

Abstract

The utility model discloses a similar simulation experiment stock device, including the simulation stock, the fixed first iron sheet that is equipped with of lower extreme of simulation stock, the fixed thin screw rod that is equipped with in lower extreme center department of first iron sheet, the pole wall activity of thin screw rod is equipped with the second iron sheet, the through-hole has been seted up in the upper end center department of second iron sheet, the second iron sheet cup joints through the pole wall activity of through-hole and thin screw rod, the pole wall of thin screw rod is located the below threaded connection of second iron sheet and has the nut, the lower extreme edge of first iron sheet encircles the fixed first U-shaped piece that is equipped with a plurality of evenly distributed, the relative inside wall of a plurality of first U-shaped pieces all rotates through first pivot and is connected with the bracing piece, the bar groove has all been seted up with the position department that corresponds of a plurality of bracing pieces in the upper end of second iron sheet, the equal sliding connection in inside in a plurality of bar grooves has resistance strain gauge, the equal fixedly connected with spring in one side that second iron sheet center was kept, The working condition of the anchor rod is conveniently monitored.

Description

Similar simulation experiment anchor rod device

Technical Field

The utility model relates to an anchor rod experiment technical field especially relates to a similar simulation experiment anchor rod device.

Background

The analog simulation experiment is one of the important ways for scientific research in relevant fields such as rock soil, geology, mines and the like. Monitoring the working condition of the anchor rod in the similar simulation experiment is an important means for researching the surrounding rock pressure in the relevant fields of chambers, roadways, tunnels and the like and determining the parameters of the anchor rod.

In the existing similar simulation experiment, a liftable force measuring device of a mine similar simulation experiment realizes the monitoring of the load of a roof plate of an overlying rock layer of a surrounding rock pressure (mainly referring to the monitoring of the roof plate load of a working surface), but the monitoring of the working condition of an anchor rod in the similar simulation experiment is not reported. Simulating the anchorage force of the anchor is an important parameter of the experiment and usually requires accurate measurement. Because the general size of the anchor rod used in the simulation experiment is smaller, the difficulty in measuring the anchoring force is higher; after the surrounding rock is disturbed by excavation, the stress value of the anchor rod is continuously increased, and the anchor rod is easy to deform and lose efficacy. The result of measuring the load of the simulated anchor rod has quantitative guiding significance for the actual roadway cave support.

The force-measuring anchor rod device can monitor the working state of the anchor rod, and has scientific guiding significance for theoretical research and engineering practice in relevant fields such as rock soil, geology, mines and the like by measuring the initial anchoring force and load of the anchor rod.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the initial anchoring force and the received force load problem that lie in the quantitative determination of stock among the prior art in the analog simulation experiment, and the analog simulation experiment stock device who provides.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a similar simulation experiment anchor rod device comprises a simulation anchor rod, wherein a first iron sheet is fixedly arranged at the lower end of the simulation anchor rod, a thin screw rod is fixedly arranged at the center of the lower end of the first iron sheet, a second iron sheet is movably arranged on the rod wall of the thin screw rod, a through hole is formed in the center of the upper end of the second iron sheet, the second iron sheet is movably sleeved with the rod wall of the thin screw rod through the through hole, the rod wall of the thin screw rod is positioned below the second iron sheet and is in threaded connection with a nut, a plurality of first U-shaped blocks which are uniformly distributed are fixedly arranged at the edge of the lower end of the first iron sheet in a surrounding mode, the inner side walls, opposite to the first U-shaped blocks, of the first U-shaped blocks are rotatably connected with supporting rods through first rotating shafts, strip-shaped grooves are formed in the positions, corresponding to the upper ends of the second iron sheets, resistance strain gauges are slidably connected inside the strip-shaped grooves, and springs are fixedly connected to one sides, far away from the center of, it is a plurality of the correspondence is kept away from to the spring the one end of resistance strain gauge with correspond the lateral wall fixed connection in bar groove is a plurality of the correspondence is kept away from to the bracing piece the one end of first U-shaped piece all extends to the correspondence the inside in bar groove is a plurality of resistance strain gauge is kept away from the correspondence one side of spring all is fixed and is equipped with the second U-shaped piece, and is a plurality of the bracing piece is located the inside one end in bar inslot portion and all is connected through the relative inside wall rotation of second pivot and second U-shaped piece.

Preferably, the upper side and the lower side of the resistance strain gauge are fixedly connected with the sliding blocks, and the side walls of the strip-shaped grooves are provided with sliding grooves matched with the two sliding blocks.

Preferably, the first iron sheet and the second iron sheet are both circular.

Preferably, the diameter of the first iron sheet is smaller than that of the second iron sheet.

Preferably, the resistance strain gauge is electrically connected with an external static resistance strain gauge through a data transmission line.

Preferably, the number of the supporting rods is four.

Compared with the prior art, the utility model provides a similar simulation experiment stock device possesses following beneficial effect:

1. according to the anchor rod device for the analog simulation experiment, the first iron sheet and the second iron sheet which are arranged at the lower end of the analog anchor rod, and the resistance strain gauge and the spring which are arranged in the second iron sheet are arranged, when the analog anchor rod is deformed by external force, the first iron sheet can press down the plurality of supporting rods, so that the plurality of supporting rods push the resistance strain gauges to move in the strip-shaped groove and extrude the spring, the resistance strain gauges transmit signals to the static resistance strain gauge through the transmission data line, the signals are converted into stress of the anchor rod according to a calibrated stress-strain regression equation, and the working condition of the anchor rod can be accurately monitored in multiple directions and conveniently;

2. this analog simulation experiment anchor rod device through setting up the nut on thin screw rod, twists the nut and can adjust the distance between second iron sheet and the first iron sheet to can adjust the initial value of resistance strain gauge.

The part that does not relate to in the device all is the same with prior art or can adopt prior art to realize, the utility model discloses can be multi-directionally accurate, the convenient operating mode of monitoring the stock.

Drawings

Fig. 1 is a schematic structural diagram of a similar simulation experiment anchor rod device provided by the present invention;

fig. 2 is a schematic top view of the second iron sheet shown in fig. 1.

In the figure: the device comprises a simulation anchor rod 1, a first iron sheet 2, a thin screw rod 3, a second iron sheet 4, a nut 5, a first U-shaped block 6, a support rod 7, a through hole 8, a resistance strain gauge 9, a spring 10, a strip-shaped groove 11, a second U-shaped block 12, a sliding block 13 and a sliding groove 14.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-2, a similar simulation experiment anchor rod device comprises a simulation anchor rod 1, a first iron sheet 2 is fixedly arranged at the lower end of the simulation anchor rod 1, a thin screw rod 3 is fixedly arranged at the center of the lower end of the first iron sheet 2, a second iron sheet 4 is movably arranged on the rod wall of the thin screw rod 3, a through hole 8 is arranged at the center of the upper end of the second iron sheet 4, the second iron sheet 4 is movably sleeved with the rod wall of the thin screw rod 3 through the through hole 8, a nut 5 is connected to the rod wall of the thin screw rod 3 below the second iron sheet 4 in a threaded manner, a plurality of first U-shaped blocks 6 which are uniformly distributed are fixedly arranged at the edge of the lower end of the first iron sheet 2 in a surrounding manner, supporting rods 7 are rotatably connected to the inner side walls of the plurality of first U-shaped blocks 6, strip-shaped grooves 11 are respectively arranged at the positions corresponding to the positions of the plurality of the supporting rods 7 at the upper end of the second iron sheet 4, the upper side and the lower side of the resistance strain gage 9 are fixedly connected with sliders 13, the side wall of the strip-shaped groove 11 is provided with a sliding groove 14 matched with the two sliders 13, the resistance strain gage 9 is electrically connected with an external static resistance strain gauge through a data transmission line, one side of the plurality of resistance strain gages 9 far away from the center of the second iron sheet 4 is fixedly connected with springs 10, one ends of the plurality of springs 10 far away from the corresponding resistance strain gage 9 are fixedly connected with the side wall of the corresponding strip-shaped groove 11, one ends of the plurality of support rods 7 far away from the corresponding first U-shaped block 6 are respectively extended to the inside of the corresponding strip-shaped groove 11, one sides of the plurality of resistance strain gages 9 far away from the corresponding springs 10 are respectively fixedly provided with a second U-shaped block 12, one ends of the plurality of support rods 7 in the strip-shaped groove 11 are respectively rotatably connected with the inner side wall opposite to the second U-shaped block 12 through a second rotating shaft, the diameter of first iron sheet 2 is less than the diameter of second iron sheet 4, and the figure of bracing piece 7 is four, can the multi-angle stress condition that detects the stock.

The utility model discloses in, during the use, through setting up at the first iron sheet 2 of 1 lower extreme of simulation stock and second iron sheet 4 and resistance strain gauge 9 and the spring 10 of setting in second iron sheet 4, when simulation stock 1 receives external force to produce and warp, can make first iron sheet 2 push down a plurality of bracing pieces 7, make a plurality of bracing pieces 7 promote resistance strain gauge 9 and remove and extrude spring 10 in the inside of bar groove 11, resistance strain gauge 9 transmits the signal for static resistance strain gauge through the transmission data line, turn into the stock atress according to the stress-strain regression equation of having markd, can be multi-directionally accurate, conveniently monitor the operating mode of stock, through setting up nut 5 on thin screw rod 3, twist and move nut 5 and can adjust the distance between second iron sheet 4 and the first iron sheet 2, thereby can adjust the initial value of resistance strain gauge 9.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a similar simulation experiment stock device, includes simulation stock (1), its characterized in that: a first iron sheet (2) is fixedly arranged at the lower end of the simulation anchor rod (1), a thin screw rod (3) is fixedly arranged at the center of the lower end of the first iron sheet (2), a second iron sheet (4) is movably arranged on the rod wall of the thin screw rod (3), a through hole (8) is formed in the center of the upper end of the second iron sheet (4), the second iron sheet (4) is movably sleeved with the rod wall of the thin screw rod (3) through the through hole (8), a nut (5) is in threaded connection with the lower portion of the second iron sheet (4) on the rod wall of the thin screw rod (3), a plurality of first U-shaped blocks (6) which are uniformly distributed are fixedly arranged at the edge of the lower end of the first iron sheet (2) in a surrounding manner, supporting rods (7) are rotatably connected on the inner side walls opposite to the first U-shaped blocks (6) through first rotating shafts, and strip-shaped grooves (11) are formed in the positions of the upper end of the second iron sheet (4) corresponding to the supporting rods (7, a plurality of equal sliding connection in inside of bar groove (11) has resistance strain gauge (9), and is a plurality of equal fixedly connected with spring (10) in one side that second iron sheet (4) center was kept away from in resistance strain gauge (9), and is a plurality of spring (10) are kept away from to correspond the one end of resistance strain gauge (9) with correspond the lateral wall fixed connection in bar groove (11), it is a plurality of bracing piece (7) are kept away from to correspond the one end of first U-shaped piece (6) all extends to correspond the inside of bar groove (11), and is a plurality of it is kept away from to correspond in resistance strain gauge (9) one side of spring (10) all is fixed and is equipped with second U-shaped piece (12), and is a plurality of bracing piece (7) are located the inside one end of bar groove (11) and all rotate through the relative inside wall of second pivot and second U-shaped piece (12) and are connected.

2. A similar simulation experiment anchor rod device according to claim 1, characterized in that: the upper side and the lower side of the resistance strain gauge (9) are fixedly connected with the sliding blocks (13), and the side walls of the strip-shaped grooves (11) are provided with sliding grooves (14) matched with the two sliding blocks (13).

3. A similar simulation experiment anchor rod device according to claim 1, characterized in that: the first iron sheet (2) and the second iron sheet (4) are both circular.

4. A similar simulation experiment anchor rod device according to claim 1, characterized in that: the diameter of the first iron sheet (2) is smaller than that of the second iron sheet (4).

5. A similar simulation experiment anchor rod device according to claim 1, characterized in that: the resistance strain gauge (9) is electrically connected with an external static resistance strain gauge through a data transmission line.

6. A similar simulation experiment anchor rod device according to claim 1, characterized in that: the number of the supporting rods (7) is four.