CN214224780U - Hydraulic constant-resistance large-deformation anchor rod mechanics monitoring device for model experiment - Google Patents
Hydraulic constant-resistance large-deformation anchor rod mechanics monitoring device for model experiment Download PDFInfo
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- CN214224780U CN214224780U CN202120296076.9U CN202120296076U CN214224780U CN 214224780 U CN214224780 U CN 214224780U CN 202120296076 U CN202120296076 U CN 202120296076U CN 214224780 U CN214224780 U CN 214224780U
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Abstract
The utility model provides a fluid pressure type constant resistance large deformation stock mechanics monitoring devices for model experiment, include: the anchoring device is connected to the bottom of the similar anchor rod body, and the hydraulic constant resistance body is arranged at the upper end of the similar anchor rod body; the hydraulic constant-resistance body is used for realizing pre-tightening, constant-resistance large deformation and stress monitoring of a similar anchor rod body of the device; the anchoring device is used for fixing the similar anchor rod body. The utility model provides a fluid pressure type constant resistance large deformation stock mechanics monitoring devices for model experiment, simple structure, convenient to use, accessible fluid pressure type constant resistance body realize the constant resistance large deformation function of the similar stock body of rod, through the change real-time supervision stock atress of control hydraulic servo controller oil pressure data, for the underground works model experiment based on the monitoring of constant resistance large deformation stock has laid good basis.
Description
Technical Field
The utility model relates to an anchor support technical field especially relates to a fluid pressure type constant resistance large deformation stock mechanics monitoring devices for model experiment.
Background
In modern society, the production activities of human beings are increasing day by day, the exploitation of coal resources develops towards the deep gradually, and when the exploitation, the deep tunnel often takes place the unstability calamity, can cause great economic loss and casualties, and it is very difficult to rely on current technique to make the deep tunnel country rock stability reach complete controllability, therefore, effectively realizes that monitoring of deep tunnel country rock stability is the effective method that reduces economic loss and casualties. The existing monitoring methods mainly comprise roadway surrounding rock deformation monitoring, micro-seismic monitoring, anchor rod axial force monitoring and the like, and the methods are difficult to meet the requirements of advanced prediction and whole-process monitoring of deep roadway surrounding rock deformation.
The constant-resistance large-deformation anchor rod has excellent performance in the aspects of impact resistance, shearing resistance and large deformation, advanced monitoring and early warning of large deformation instability of slope rock masses are effectively realized based on the monitoring technology of the constant-resistance large-deformation anchor rod, model experiment research of the constant-resistance large-deformation anchor rod needs to be developed urgently, and therefore, the hydraulic constant-resistance large-deformation anchor rod mechanical monitoring device for model experiments is very necessary to be designed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a fluid pressure type constant resistance large deformation stock mechanics monitoring devices for model experiment, simple structure, convenient to use, accessible fluid pressure type constant resistance body realize the constant resistance large deformation function of the similar stock body of rod, through the change real-time supervision stock atress of control hydraulic servo controller oil pressure data, laid good basis for the underground works model experiment based on the monitoring of the constant resistance large deformation stock.
In order to achieve the above object, the utility model provides a following scheme:
a hydraulic constant-resistance large-deformation anchor rod mechanics monitoring device for model experiments comprises: the anchoring device is fixedly connected to the bottom of the similar anchor rod body, and the hydraulic constant resistance body is arranged at the upper end of the similar anchor rod body;
the hydraulic constant-resistance body comprises a constant-resistance body outer sleeve, a piston, a constant-resistance body inner sleeve and a hydraulic servo controller, the inner portion of the constant-resistance body outer sleeve, the piston and the inner portion of the constant-resistance body outer sleeve are hollow, the constant-resistance body inner sleeve is arranged inside the constant-resistance body outer sleeve, the piston is arranged between the constant-resistance body inner sleeve and the constant-resistance body outer sleeve, the piston is arranged along the constant-resistance body inner sleeve and vertically slides the constant-resistance body outer sleeve, the piston is used for enabling the constant-resistance body inner sleeve and a gap between the constant-resistance body outer sleeves to be divided into two oil chambers, the two oil chambers are respectively connected with two ends of the hydraulic servo controller and used for achieving pre-tightening of the hydraulic constant-resistance body, large constant-resistance deformation and stress monitoring of similar anchor rods, and the similar anchor rods are arranged along the centers of the hydraulic constant-resistance body and are fixedly connected with the hydraulic anchoring device.
Optionally, the internal cover of constant resistance body overcoat, piston, constant resistance body is cylindrical, the external cover upper end of constant resistance body is provided with the round hole, the piston passes through the round hole cup joints in the internal cover of constant resistance body, stretch out the piston upper end the external cover of constant resistance body, the outer wall of piston upper end is hugged closely the round hole pore wall, is used for preventing the piston is deviate from, the outer wall of piston bottom is hugged closely the inner wall of constant resistance body overcoat, the inner wall of piston bottom is hugged closely the outer wall of constant resistance body endotheca, is used for realizing the piston is in the constant resistance body endotheca reaches the vertical slip between the external cover of constant resistance body.
Optionally, two the grease chamber is constant resistance body working grease chamber and constant resistance body pretension working grease chamber respectively, the upper end of piston bottom does constant resistance body working grease chamber, the lower extreme of piston bottom does constant resistance body pretension working grease chamber, constant resistance body working grease chamber connects the one end of hydraulic servo controller, constant resistance body pretension working grease chamber connects the other end of hydraulic servo controller, through hydraulic servo controller control and monitoring the oil pressure change of constant resistance body pretension working grease chamber and constant resistance body working grease chamber for realize the pretension of similar stock body of rod, the big deformation of constant resistance and atress monitoring function.
Optionally, the anchoring device includes a bolt and an anchoring body, the bottom of the similar anchor rod body is fixedly connected to the bolt, and the bolt is fixedly arranged on the anchoring body.
Optionally, the hydraulic constant-resistance body further comprises a transition sleeve, an anchor ring, a member and a clamping piece, wherein the transition sleeve is arranged at the top of the piston, the anchor ring is arranged on the transition sleeve, the clamping piece is arranged on the anchor ring, the member is arranged at the bottom of the hydraulic constant-resistance body, and the similar anchor rod body sequentially penetrates through the clamping piece, the anchor ring, the transition sleeve and the member.
According to the utility model provides a concrete embodiment, the utility model discloses a following technological effect: the utility model provides a fluid pressure type constant resistance large deformation stock mechanics monitoring devices for model experiment can realize the constant resistance large deformation function of the similar stock body of rod, and the constant resistance body cooperates the similar stock body of rod and anchor body to realize the pretension and the anchor of stock, and the constant resistance large deformation function of the similar stock body of rod can be realized to accessible fluid pressure type constant resistance body, monitors the stock atress through the change real-time supervision hydraulic servo controller oil pressure data, has laid good basis for the underground works model experiment based on constant resistance large deformation stock monitoring; in a physical model experiment, firstly, an anchoring body and a similar anchor rod body are pre-embedded, the function of constant resistance under pre-tightening and large deformation of the similar anchor rod body is realized by controlling the oil pressure change of a constant resistance pre-tightening working oil chamber and a constant resistance working oil chamber through a hydraulic servo controller in the experiment process, and meanwhile, the stress of the similar anchor rod body is monitored in real time by monitoring the oil pressure data change of the hydraulic servo controller; the similar anchor rod body and the anchoring body are stable, and the problem of anchoring failure can not occur when a deep high-stress large-deformation model experiment is carried out; by adopting the hydraulic servo controller, the pre-tightening force and the anchor rod anchoring force can be accurately controlled by the hydraulic servo controller, similar anchor rods further meet the similar theory in a model experiment, and the precision of the physical model experiment is improved; the hydraulic servo controller is convenient to connect and test due to the fact that the pre-tightening working oil chamber oil nipple and the constant-resistance working oil chamber oil nipple are arranged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic structural view of a hydraulic constant-resistance large-deformation anchor rod mechanics monitoring device for a model experiment according to an embodiment of the present invention;
fig. 2 is a sectional view of a hydraulic constant-resistance large-deformation anchor rod mechanics monitoring device a-a for a model experiment according to an embodiment of the present invention;
fig. 3 is a B-B sectional view of a hydraulic constant-resistance large-deformation anchor rod mechanics monitoring device for a model experiment according to an embodiment of the present invention;
fig. 4 is a C-C sectional view of a hydraulic constant-resistance large-deformation anchor rod mechanics monitoring device for a model experiment according to an embodiment of the present invention;
fig. 5 is a D-D sectional view of a hydraulic constant-resistance large-deformation anchor rod mechanics monitoring device for a model experiment.
Reference numerals: 1. a clip; 2. an anchor ring; 3. a transition sleeve; 4. a constant resistance body hollow portion; 5. a constant resistance body working oil chamber oil nozzle; 6. an oil pipe; 7. a piston; 8. a constant resistance body coat; 9. a constant resistance body working oil chamber; 10. a constant-resistance body pre-tightening working oil chamber; 11. a constant resistance body inner sleeve; 12. pre-tightening a working oil chamber nozzle; 13. a hydraulic servo controller; 14. a member; 15. similar anchor rod bodies; 16. a bolt; 17. and (4) anchoring the body.
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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a fluid pressure type constant resistance large deformation stock mechanics monitoring devices for model experiment, simple structure, convenient to use, accessible fluid pressure type constant resistance body realize the constant resistance large deformation function of the similar stock body of rod, through the change real-time supervision stock atress of control hydraulic servo controller oil pressure data, laid good basis for the underground works model experiment based on the monitoring of the constant resistance large deformation stock.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1-5, the embodiment of the utility model provides a hydraulic constant-resistance large-deformation anchor rod mechanics monitoring device for model experiment, include: the anchor rod comprises a similar anchor rod body 15, an anchoring device and a hydraulic constant resistance body, wherein the bottom of the similar anchor rod body 15 is fixedly connected with the anchoring device, and the hydraulic constant resistance body is arranged at the upper end of the similar anchor rod body 15;
the hydraulic constant-resistance body comprises a constant-resistance body outer sleeve 8, a piston 7, a constant-resistance body inner sleeve 11 and a hydraulic servo controller 13, the constant resistance body outer sleeve 8, the piston 7 and the constant resistance body inner sleeve 11 are hollow, the constant resistance body inner sleeve 11 is arranged in the constant resistance body outer sleeve 8, the piston 7 is arranged between the constant resistance body inner sleeve 11 and the constant resistance body outer sleeve 8, the piston 7 vertically slides along the constant resistance body inner sleeve 11 and the constant resistance body outer sleeve 8, the piston 7 divides the gap between the inner constant resistance body sleeve 11 and the outer constant resistance body sleeve 8 into two oil chambers which are respectively connected with two ends of the hydraulic servo controller 13, is used for realizing the pre-tightening and the large constant resistance deformation of the hydraulic constant resistance body and the stress monitoring of a similar anchor rod body, the similar anchor rod body 15 penetrates through the hydraulic constant resistance body along the center of the hollow part 4 of the constant resistance body of the hydraulic constant resistance body to be connected with the anchoring device.
The constant resistance body outer sleeve 8, the piston 7, the internal cover 11 of constant resistance are cylindrical, the 8 upper ends of constant resistance body outer sleeve are provided with the round hole, the piston 7 passes through the round hole cup joints on the constant resistance body inner sleeve 11, the piston 7 upper end is stretched out the constant resistance body outer sleeve 8, the outer wall of piston 7 upper end is hugged closely the round hole pore wall, be used for preventing the piston 7 is deviate from, the outer wall of piston 7 bottom is hugged closely the inner wall of constant resistance body outer sleeve 8, the inner wall of piston 7 bottom is hugged closely the outer wall of constant resistance body inner sleeve 11, is used for realizing the piston 7 is in the constant resistance body inner sleeve 11 reaches vertical slip between the constant resistance body outer sleeve 8.
Two grease chambeies are constant resistance body operating oil chamber 9 and constant resistance body pretension operating oil chamber 10 respectively, the upper end of piston 7 bottom does constant resistance body operating oil chamber 9, the lower extreme of piston 7 bottom does constant resistance body pretension operating oil chamber 10, constant resistance body operating oil chamber 9 is connected the one end of hydraulic servo controller 13, constant resistance body pretension operating oil chamber 10 is connected the other end of hydraulic servo controller 13, through hydraulic servo controller 13 controls and monitors constant resistance body pretension operating oil chamber 10 and constant resistance body operating oil chamber 9's oil pressure change for realize the pretension of similar stock body of rod 15, the big deformation of constant resistance and atress monitoring function.
The outer end of the constant resistance body working oil chamber 9 is provided with a constant resistance body working oil chamber oil nozzle 5, the outer end of the constant resistance body pre-tightening working oil chamber 10 is provided with a pre-tightening working oil chamber oil nozzle 12, the constant resistance body working oil chamber oil nozzle 5 is connected with one end of the hydraulic servo controller 13 through an oil pipe 6, and the pre-tightening working oil chamber oil nozzle 12 is connected with the other end of the hydraulic servo controller 13 through the oil pipe 6.
The anchoring device comprises a bolt 16 and an anchoring body 17, the bottom of the similar anchor rod body 15 is fixedly connected to the bolt 16, and the bolt 16 is fixedly arranged on the anchoring body 17.
The hydraulic constant-resistance body further comprises a transition sleeve 3, an anchor ring 2, a component 14 and a clamping piece 1, wherein the transition sleeve 3 is arranged at the top of the piston 7, the anchor ring 2 is arranged on the transition sleeve 3, the clamping piece 1 is arranged on the anchor ring 2, the component 14 is arranged at the bottom of the hydraulic constant-resistance body, and the similar anchor rod body 15 sequentially penetrates through the clamping piece 1, the anchor ring 2, the transition sleeve 3 and the component 14.
The use process of the device is as follows: in the physical model building process, firstly embedding an anchoring body, a bolt and a similar anchor rod body, wherein the bolt is arranged on the anchoring body, the similar anchor rod body is fixedly connected on the bolt, after anchoring of the similar anchor rod body is completed, a hydraulic constant resistance body is arranged at the upper end of the similar anchor rod body, a hydraulic servo controller is connected on a nozzle of the hydraulic constant resistance body, the length of a working oil chamber of the constant resistance body is adjusted to be equal to the length of a pre-tightening working oil chamber of the constant resistance body through the hydraulic servo controller, then an anchor ring and a clamping piece are arranged on the hydraulic constant resistance body, the oil pressure of the pre-tightening working oil chamber of the constant resistance body is increased through the hydraulic servo controller, the oil pressure of the pre-tightening working oil chamber of the constant resistance body is kept unchanged after the pre-tightening working oil chamber of the constant resistance body is increased to enable the similar anchor rod body to reach a set pre-tightening force, the device provides preset constant resistance, performs a physical model experiment, monitors the oil pressure of two oil chambers in real time and converts the oil pressure into real-time stress data of a similar anchor rod body in the experimental process, and when the stress is greater than the set constant resistance, namely the oil pressure of the oil chambers reaches the set maximum value, the constant resistance can be kept, and meanwhile, the piston slides along the constant-resistance inner sleeve and the constant-resistance outer sleeve, so that the functions of real-time monitoring of the stress of the anchor rod and large deformation of the constant resistance are realized.
The utility model provides a fluid pressure type constant resistance large deformation stock mechanics monitoring devices for model experiment can realize the constant resistance large deformation function of the similar stock body of rod, and the constant resistance body cooperates the similar stock body of rod and anchor body to realize the pretension and the anchor of stock, and the constant resistance large deformation function of the similar stock body of rod can be realized to accessible fluid pressure type constant resistance body, monitors the stock atress through the change real-time supervision hydraulic servo controller oil pressure data, has laid good basis for the underground works model experiment based on constant resistance large deformation stock monitoring; in a physical model experiment, firstly, an anchoring body and a similar anchor rod body are pre-embedded, the function of constant resistance under pre-tightening and large deformation of the similar anchor rod body is realized by controlling the oil pressure change of a constant resistance pre-tightening working oil chamber and a constant resistance working oil chamber through a hydraulic servo controller in the experiment process, and meanwhile, the stress of the similar anchor rod body is monitored in real time by monitoring the oil pressure data change of the hydraulic servo controller; the similar anchor rod body and the anchoring body are stable, and the problem of anchoring failure can not occur when a deep high-stress large-deformation model experiment is carried out; by adopting the hydraulic servo controller, the pre-tightening force and the anchor rod anchoring force can be accurately controlled by the hydraulic servo controller, similar anchor rods further meet the similar theory in a model experiment, and the precision of the physical model experiment is improved; the hydraulic servo controller is convenient to connect and test due to the fact that the pre-tightening working oil chamber oil nipple and the constant-resistance working oil chamber oil nipple are arranged.
The principle and the implementation of the present invention are explained herein by using specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (6)
1. The utility model provides a fluid pressure type constant resistance large deformation stock mechanics monitoring devices for model experiment which characterized in that includes: the anchoring device is fixedly connected to the bottom of the similar anchor rod body, and the hydraulic constant resistance body is arranged at the upper end of the similar anchor rod body;
the hydraulic constant-resistance body comprises a constant-resistance body outer sleeve, a piston, a constant-resistance body inner sleeve and a hydraulic servo controller, the inner portion of the constant-resistance body outer sleeve, the piston and the inner portion of the constant-resistance body outer sleeve are hollow, the constant-resistance body inner sleeve is arranged inside the constant-resistance body outer sleeve, the piston is arranged between the constant-resistance body inner sleeve and the constant-resistance body outer sleeve, the piston is arranged along the constant-resistance body inner sleeve and vertically slides the constant-resistance body outer sleeve, the piston is used for enabling the constant-resistance body inner sleeve and a gap between the constant-resistance body outer sleeves to be divided into two oil chambers, the two oil chambers are respectively connected with two ends of the hydraulic servo controller and used for achieving pre-tightening of the hydraulic constant-resistance body, large constant-resistance deformation and stress monitoring of similar anchor rods, and the similar anchor rods are arranged along the centers of the hydraulic constant-resistance body and are fixedly connected with the hydraulic anchoring device.
2. The hydraulic constant-resistance large-deformation anchor rod mechanics monitoring device for model experiments as claimed in claim 1, wherein the constant-resistance body outer sleeve, the piston and the constant-resistance body inner sleeve are all cylindrical, a round hole is arranged at the upper end of the constant-resistance body outer sleeve, the piston is sleeved on the constant-resistance body inner sleeve through the round hole, the upper end of the piston extends out of the constant-resistance body outer sleeve, the outer wall of the upper end of the piston is tightly attached to the wall of the round hole for preventing the piston from coming off, the outer wall of the bottom of the piston is tightly attached to the inner wall of the constant-resistance body outer sleeve, and the inner wall of the bottom of the piston is tightly attached to the outer wall of the constant-resistance body inner sleeve for realizing the piston vertically sliding between the constant-resistance body inner sleeve and the constant-resistance body outer sleeve.
3. The hydraulic constant-resistance large-deformation anchor rod mechanics monitoring device for the model experiment as claimed in claim 1, wherein the two oil chambers are respectively a constant-resistance body working oil chamber and a constant-resistance body pre-tightening working oil chamber, the upper end of the piston bottom is the constant-resistance body working oil chamber, the lower end of the piston bottom is the constant-resistance body pre-tightening working oil chamber, the constant-resistance body working oil chamber is connected with one end of the hydraulic servo controller, the constant-resistance body pre-tightening working oil chamber is connected with the other end of the hydraulic servo controller, and the hydraulic servo controller controls and monitors the oil pressure change of the constant-resistance body pre-tightening working oil chamber and the constant-resistance body working oil chamber so as to realize the pre-tightening, the constant-resistance large-deformation and the stress monitoring functions of similar anchor rod bodies.
4. The hydraulic constant-resistance large-deformation anchor rod mechanics monitoring device for the model experiment as claimed in claim 3, wherein the outer end of the constant-resistance body operating oil chamber is provided with a constant-resistance body operating oil chamber oil nozzle, the outer end of the constant-resistance body pre-tightening operating oil chamber is provided with a pre-tightening operating oil chamber oil nozzle, the constant-resistance body operating oil chamber oil nozzle is connected with one end of the hydraulic servo controller through an oil pipe, and the pre-tightening operating oil chamber oil nozzle is connected with the other end of the hydraulic servo controller through an oil pipe.
5. The hydraulic constant-resistance large-deformation anchor rod mechanics monitoring device for the model experiment as claimed in claim 1, wherein the anchoring device comprises a bolt and an anchoring body, the bottom of the similar anchor rod body is fixedly connected to the bolt, and the bolt is fixedly arranged on the anchoring body.
6. The hydraulic constant-resistance large-deformation anchor rod mechanics monitoring device for the model experiment as recited in claim 1, wherein the hydraulic constant-resistance body further comprises a transition sleeve, an anchor ring, a member and a clamping piece, the transition sleeve is disposed on the top of the piston, the anchor ring is disposed on the transition sleeve, the clamping piece is disposed on the anchor ring, the member is disposed on the bottom of the hydraulic constant-resistance body, and the similar anchor rod body sequentially passes through the clamping piece, the anchor ring, the transition sleeve and the member.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120296076.9U CN214224780U (en) | 2021-02-02 | 2021-02-02 | Hydraulic constant-resistance large-deformation anchor rod mechanics monitoring device for model experiment |
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| CN202120296076.9U CN214224780U (en) | 2021-02-02 | 2021-02-02 | Hydraulic constant-resistance large-deformation anchor rod mechanics monitoring device for model experiment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117949306A (en) * | 2024-03-27 | 2024-04-30 | 河海大学 | Constant-resistance anchor rod large-displacement drawing machine and use method thereof |
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2021
- 2021-02-02 CN CN202120296076.9U patent/CN214224780U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117949306A (en) * | 2024-03-27 | 2024-04-30 | 河海大学 | Constant-resistance anchor rod large-displacement drawing machine and use method thereof |
| CN117949306B (en) * | 2024-03-27 | 2024-06-07 | 河海大学 | Constant-resistance anchor rod large-displacement drawing machine and use method thereof |
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