CN217586110U - Anchor rod force-induced color-changing gasket adopting visual indication system - Google Patents
Anchor rod force-induced color-changing gasket adopting visual indication system Download PDFInfo
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- CN217586110U CN217586110U CN202123053635.2U CN202123053635U CN217586110U CN 217586110 U CN217586110 U CN 217586110U CN 202123053635 U CN202123053635 U CN 202123053635U CN 217586110 U CN217586110 U CN 217586110U
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Abstract
The utility model provides an adopt visual indication system's stock power to send down a color washer, including observation window, stock solution room, liquid bag, clamp plate, bolt hole, infiltration bottom plate, protection casing, the observation window is installed in the stock solution room top, the infiltration bottom plate is installed in the stock solution room bottom, the bolt hole has in the middle of the clamp plate, the liquid bag is installed in the clamp plate bottom, and the protection casing is hugged closely to the bottom, the protection casing is installed and is outmost being used for protecting the inner structure at the packing ring. The color of different degree of depth is shown to this packing ring under different pressure effects, can convenient and fast ground find need maintain, maintain or the stock of changing, has high monitoring efficiency, does not influence the stock and exerts the pretightning force, the convenient and lower advantage of cost of operation.
Description
Technical Field
The utility model belongs to the technical field of strut engineering monitoring, a adopt visual indication system's stock power to send down a color changing packing ring is related to.
Background
Comparatively wide stock dynamometer that uses in geotechnical engineering fields such as highway tunnel, foundation ditch slope, mine tunnel, hydraulic engineering at present can't participate in strutting as stock self structure mostly, so still need send the professional to carry out complicated operation and carry out stress monitoring to the stock after the stock construction is accomplished, consequently present monitoring method mainly has three obvious not enough: firstly, engineering workload is increased, secondary installation construction needs to be carried out on the anchor rod when the anchor rod is installed in a dynamometric timing mode, a specially-assigned person needs to be sent to operate according to an installation manual, time is consumed, and manpower is wasted; secondly, the efficiency is low, in the using process of the anchor rod, due to anchor rod corrosion, vibration of rock-soil bodies and other reasons, the prestress born by the anchor rod is smaller than a certain threshold value, and the anchor rod needs to be maintained, repaired or replaced, in the actual anchor rod engineering, hundreds or thousands of anchor rods need to be monitored by adopting an instrument, and the efficiency is low; thirdly, the cost is increased, the cost of the whole dynamometer device is tens of times of that of a common anchor rod, and the labor cost and the purchase and later maintenance of related matched devices are required, so that the engineering cost is greatly increased; the fourth technical requirement is high, and part stock dynamometer adopts high-accuracy instrument, and ordinary site worker can't the independent operation, and the factor that influences data accuracy is more.
Therefore, it is necessary to provide a monitoring anchor rod gasket which has high monitoring efficiency, does not influence the applied pretightening force of the anchor rod, is convenient to operate and has low cost.
SUMMERY OF THE UTILITY MODEL
The technical purpose of the utility model is to provide an applicable novel power in engineering such as foundation ditch slope, highway tunnel, hydraulic engineering, mine tunnel discolours packing ring, installs this packing ring that discolours between nut and backing plate, the atress state that the stock this moment was judged to the colour degree of depth of accessible observation anchor head department packing ring when monitoring the stock promptly.
The above technical object of the present invention can be achieved by the following technical solutions.
The utility model provides a power discolours packing ring, includes observation window, liquid reserve chamber, liquid bag, clamp plate, bolt hole, infiltration bottom plate, protection casing, wherein visual indication system is constituteed to observation window, liquid reserve chamber, liquid bag, clamp plate, lays this power discolours packing ring between metal packing ring and nut during the installation. The protective shell is an outermost layer protective layer, and a permeable bottom plate is arranged at the bottom of the liquid storage chamber, which is in contact with the liquid sac and can allow liquid to permeate; the pressing plate is attached to the liquid bag and bears the whole pressure of the bolt; the observation window can observe the color change of the visual indication system and is used for judging the stress state of the anchor rod.
Further, the bottom plate of the reservoir is provided with pores and has permeability, and the liquid in the liquid sac can permeate into the reservoir.
Furthermore, the pressing plate is made of an elastic deformation material and can deform when being extruded by the nut, and the pressing plate can recover to the original position within a period of time when the pressure is reduced.
Further, the observation window can observe the color change of the liquid sac which permeates into the liquid storage chamber under the extrusion action of the pressing plate.
Furthermore, the color presented by the liquid storage chamber is compared with the color chart, the stress state of the anchor rod at the moment can be judged, and the anchoring effect of the anchor rod can be obtained.
Furthermore, the protective shell is made of transparent soft elastic material and is attached with a heat insulation film, so that the protective shell has good sealing performance and certain toughness.
Furthermore, the indicating liquid in the liquid bag is red liquid with fluorescence, is obvious in color development under the irradiation of lamplight and stable in chemical property, and does not generate color change reaction along with the change of temperature, time and pressure.
Furthermore, the permeability of the permeation bottom plate of the liquid storage chamber in contact with the liquid bag has adjustability, and can be adjusted according to the actual stress condition of the anchor rod, so that the accuracy of the colorimetric card is ensured.
Further, the utility model discloses under the pressure effect of bolt, reflect the stress state of stock indirectly through visual indication system. The utility model relates to an stock self part is settled when the stock construction, and axial displacement takes place for the clamp plate among the visual indication system under the bolt pressure effect, and liquid in the liquid bag sees through the infiltration bottom plate under the pressure effect and flows into the stock solution room, and liquid content is more, and the colour of observing in the observation window is darker. The permeability of the permeable bottom plate is determined by the actual stress of the anchor rod, so that the liquid content of the liquid storage chamber is consistent when the anchor rod reaches three stress states in different projects, namely, the colors observed by the observation window are the same. Therefore, the liquid content in the liquid storage chamber is directly related to the pressure provided by the pressing plate, and when the anchor rod is monitored, only the color displayed by the gasket at the anchor head needs to be observed.
Compared with the prior art, the utility model discloses following beneficial effect has.
1. With the visual indication system, the color of the gasket can show different colors along with the pressure change given by the bolt, and the color measurement standard is combined with the actual anchor rod stress condition, so that the result is safe and reliable.
2. The anchor rod is used as the self structure of the anchor rod, and the anchor rod normally applies prestress, so that the supporting effect of the anchor rod cannot be influenced.
3. The equipment, manual work, the time cost of greatly reduced later stage installation stock dynamometer can monitor all stock, ensures the construction safety.
4. The technical requirement is not high, the operation is convenient, and the common worker can complete the installation of the force-induced color-changing gasket according to the standard construction of the anchor rod.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of the installation assembly of the present invention.
Fig. 3 is an enlarged schematic view of the pore space of the permeable bottom plate of the present invention.
Fig. 4 is a schematic view of the pressure colorimetry of the present invention.
Fig. 5 is an application schematic view of the anchor rod installation of the present invention.
Fig. 6 is a schematic diagram of the three-dimensional splitting structure of the present invention.
Reference numerals are as follows: 1. an observation window; 2. a liquid storage chamber; 3. a liquid sac; 4. pressing a plate; 5. bolt holes; 6. a protective housing; 7. a permeate backplane; 8. a base plate; 9. a bolt; 10. reinforcing steel bars; 11. and (4) a rock-soil body.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
An anchor rod force-induced color-changing gasket adopting a visual indication system is provided with the visual indication system, namely an observation window 1, a liquid storage chamber 2, a liquid bag 3, a pressing plate 4, a bolt hole 5, a protective shell 6 and a permeation bottom plate 7 by referring to fig. 1 and 2.
In order to improve the accuracy of monitoring the stress of the anchor rod, before the force-induced discoloration gasket is assembled, the stress range of the anchor rod is obtained according to a field report, so that the proper permeability of the permeable bottom plate is determined, and if the stress of the anchor rod is smaller, the large porosity of the permeable bottom plate is adopted, and a reference is made to A in fig. 3; if the anchor rod stress is too large, the small porosity is adopted, and referring to B in FIG. 3, the color in the observation window 1 can be ensured to be matched with the stress color chart.
During the installation of the anchor rod, the force-chromic washer is placed between the bolt and the metal backing plate, and the bottom of the bolt is completely positioned within the range of the pressure plate 4, so that the pressure plate 4 is ensured to bear the whole pressure from the bolt. It should be noted that the bottom of the bolt should be completely attached to the pressure plate 4 as much as possible, so as to avoid inaccurate monitoring results due to uneven pressure.
In fig. 4, a, b and c represent the design prestress, stress relaxation state and limit stress state of the anchor rod respectively.
After the anchor rod prestress is applied, the axial deformation of the pressing plate 4 is completed, the liquid in the liquid bag 3 flows to the liquid storage chamber 2 through the permeation bottom plate 7 under the action of pressure, and the color state of the design prestress in the color chart can be obtained in the observation window 1, referring to a in fig. 4.
When the anchor rod is subjected to stress monitoring, after the color in the observation window 1 is clear, the obtained color is compared with the anchor rod stress color chart, and the stress state of the anchor rod at the moment can be obtained by referring to fig. 4, namely, the anchoring degree of the anchor rod in the rock stratum is judged.
When the stock leads to the reinforcing bar cross-section to diminish because of corrosive substance, will take place or when will taking place the fracture, the stock bears the stress increase, and bolt pressure can increase, and 4 deformations of clamp plate also can increase, and liquid can flow to stock solution room 2 in the liquid bag 3, appear the colour in the observation window 1 and become dark to "ultimate stress state" and when more than, refer to c in the 4, then need maintain or change the stock.
When the stock breaks because of factors such as corrosion, lead to the stock stress that receives to reduce and can't continue to play the anchor effect, bolt pressure can reduce, and clamp plate 4 can resume partly deformation, and the liquid in the liquid reserve chamber 2 will flow back to liquid bag 3, and the colour becomes shallow in the observation window 1 to "stress relaxation state" and below in the colorimetric card, refer to b in 4, then need change the stock.
When the color in the observation window 1 is between the colors of the stress relaxation state and the limit stress state in the color chart, the stress borne by the anchor rod is fluctuated, but the anchor rod is in a normal working state, and the stress state of the anchor rod which is closer to the anchor rod at the moment can be judged according to the color depth, so that the stress condition of the anchor rod is judged.
Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also belong to the protection scope of the present invention.
Claims (5)
1. The utility model provides an adopt visual indication system's stock power to send down a color washer, includes visual indication system and infiltration bottom plate, clamp plate, bolt hole, protection casing, characterized by: visual indication system comprises observation window, stock solution room, liquid bag, the observation window is installed in the stock solution room top, makes and has certain intensity for transparent material, the infiltration bottom plate is equipped with to the bottom of stock solution room and liquid bag contact, and the stock solution room has certain clearance apart from protection casing bottom, have the bolt hole in the middle of the clamp plate, undertake bolt pressure, the liquid bag is installed in stock solution room one side, and the top contacts with the clamp plate, and the protection casing is hugged closely to the bottom, receives the extrusion to take place to warp inside liquid emergence seepage flow in back, the protection casing is installed at the packing ring outwardly, and the above-mentioned part of sealed parcel.
2. The force-chromic anchor ring according to claim 1 with visual indication system, wherein: the protective housing can be elastically deformed and provides good sealing.
3. The anchoring force chromic gasket using visual indication system according to claim 1, wherein: the indicating liquid in the liquid sac is red liquid with fluorescence, the color is darker when the content is higher, the chemical property is stable, and the color change reaction does not occur along with the change of temperature, time and pressure.
4. The anchoring force chromic gasket using visual indication system according to claim 1, wherein: the pressing plate is made of an elastic deformation material, and axial deformation is only related to the pressure of the bolt and is not related to friction force.
5. The anchoring force chromic gasket using visual indication system according to claim 1, wherein: the permeability of the permeable bottom plate can be adjusted according to the actual prestress of the anchor rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123053635.2U CN217586110U (en) | 2021-12-07 | 2021-12-07 | Anchor rod force-induced color-changing gasket adopting visual indication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123053635.2U CN217586110U (en) | 2021-12-07 | 2021-12-07 | Anchor rod force-induced color-changing gasket adopting visual indication system |
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| CN217586110U true CN217586110U (en) | 2022-10-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117988908A (en) * | 2024-04-03 | 2024-05-07 | 武汉大学 | Graded early warning anchor rod based on liquid metal and early warning method |
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2021
- 2021-12-07 CN CN202123053635.2U patent/CN217586110U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117988908A (en) * | 2024-04-03 | 2024-05-07 | 武汉大学 | Graded early warning anchor rod based on liquid metal and early warning method |
| CN117988908B (en) * | 2024-04-03 | 2024-06-11 | 武汉大学 | Graded early warning anchor rod based on liquid metal and early warning method |
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