CN212452833U - Anchor head displacement measuring device and system - Google Patents
Anchor head displacement measuring device and system Download PDFInfo
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- CN212452833U CN212452833U CN202021872300.6U CN202021872300U CN212452833U CN 212452833 U CN212452833 U CN 212452833U CN 202021872300 U CN202021872300 U CN 202021872300U CN 212452833 U CN212452833 U CN 212452833U
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 claims abstract description 17
- 239000002689 soil Substances 0.000 claims abstract description 16
- 230000008859 change Effects 0.000 claims abstract description 14
- 230000008569 process Effects 0.000 claims abstract description 13
- 238000004873 anchoring Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000012360 testing method Methods 0.000 description 21
- 238000010586 diagram Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 4
- 238000013101 initial test Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000012372 quality testing Methods 0.000 description 1
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Abstract
The utility model discloses an anchor head displacement measuring device and system, wherein the anchor head displacement measuring device comprises a rope measuring device, a rope body, an angle measuring device and a supporting device; the rope measuring device is used for retracting the rope body, locking the length of the rope body and reading the length, and is fixed at one end of the anchor rod and connected with one end of the rope body; the angle measuring device is used for measuring the angle change of the rope body in the pulling-out process of the anchor rod, and the angle measuring device is connected with the other end of the rope body and fixedly connected to the supporting device; the supporting device is used for being fixed at a preset soil body. The utility model has the advantages that: the device is simple to install, has low requirements on fields, and can accurately measure the displacement of the anchor head.
Description
Technical Field
The utility model relates to an engineering stock quality testing technical field, more specifically says, relates to an anchor head displacement measurement device, system.
Background
In the quality detection of engineering anchor rods, the method of erecting a dial indicator by using a reference beam to measure the displacement of the anchor head is generally adopted for detecting the displacement of the anchor head, and when a supporting anchor rod is detected by the method, because the field is an inclined plane, the erection difficulty is high, the erection time is long, the working efficiency is influenced, and the situation of large reading error exists when the gauge is not standard. In other scenes, the problems of large reading error and the like caused by sliding of a dial indicator head, torsion of a magnetic gauge stand, shaking of a reference beam and the like exist.
SUMMERY OF THE UTILITY MODEL
The utility model provides an anchor head displacement measurement device, system, the solution erects the degree of difficulty height, long time, influences the problem that work efficiency and reading error are big.
In order to solve the above problems, in a first aspect, the present invention provides an anchor head displacement measuring device, which includes a rope measuring device, a rope body, an angle measuring device and a supporting device;
the rope measuring device is used for retracting the rope body, locking the length of the rope body and reading the length, and is fixed at one end of the anchor rod and connected with one end of the rope body;
the angle measuring device is used for measuring the angle change of the rope body in the pulling-out process of the anchor rod, and the angle measuring device is connected with the other end of the rope body and fixedly connected to the supporting device;
the supporting device is used for being fixed at a preset soil body.
The anchor head displacement measuring device in the utility model, the survey rope device with the stock passes through staple bolt fixed connection.
In the anchor head displacement measuring device of the present invention, the angle measuring device includes an angle sensor and a box body;
the angle sensor is arranged in the box body and can move in the box body to measure the angle change of the rope body in the process of pulling out the anchor rod, the angle sensor is connected with the other end of the rope body, and the box body is fixedly connected with the supporting device.
In the anchor head displacement measuring device of the present invention, the supporting device includes a fixing rod and a bracket;
the top end of the fixed rod is fixedly connected to the box body, and the bottom of the fixed rod is inserted into and fixed at a preset soil body; the bracket is fixed to the fixing rod to support and stabilize the fixing rod.
In the anchor head displacement measuring device of the present invention, the rope body is a flexible measuring rope with scale marks and made of steel strands.
In a second aspect, an anchor head displacement measuring system is provided, which comprises the above-mentioned anchor head displacement measuring device, an anchor rod, an anchorage device, a jack and a bearing plate;
the anchor rod is characterized in that the other end of the anchor rod is inserted into a preset anchoring soil body, the anchor and the jack are respectively sleeved on the anchor rod, and the bearing plate is arranged between the jack and a supporting surface provided by the anchoring soil body.
The utility model has the advantages that:
the device is simple to install, has low requirements on fields, and can accurately measure the displacement of the anchor head.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of 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 it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an anchor head displacement measuring device and system provided by the present invention;
fig. 2 is an initial experimental schematic diagram of an anchor head displacement measuring device provided by the present invention;
fig. 3 is an experimental end schematic diagram of the anchor head displacement measuring device provided by the utility model.
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 those skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those 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 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. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present application, the word "exemplary" is used to mean "serving as an example, instance, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the invention. In the following description, details are set forth for the purpose of explanation. It will be apparent to one of ordinary skill in the art that the present invention may be practiced without these specific details. In other instances, well-known structures and processes are not shown in detail to avoid obscuring the description of the invention with unnecessary detail. Thus, the present invention is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an anchor head displacement measuring device and system provided by the present invention. The anchor head displacement measuring device comprises a rope measuring device 7, a rope body 8, an angle measuring device 20 and a supporting device 30. The rope measuring device 7 is used for retracting the rope body 8, locking the length of the rope body 8 and reading the length, and the rope measuring device 7 is fixed at one end of the anchor rod 6 and connected with one end of the rope body 8.
In this embodiment, the rope measuring device 7 is fixed to the head of the anchor rod 6 and connected to the tail end of the measuring rope (rope body 8). The automatic reading device has the functions of retracting and releasing the measuring rope, locking the length of the measuring rope, automatically reading the length of the measuring rope and accommodating the measuring rope.
The angle measuring device 20 is used for measuring the angle change of the rope body 8 during the pulling-out process of the anchor rod 6, and the angle measuring device 20 is connected with the other end of the rope body 8 and fixedly connected to the supporting device 30; the angle measuring device 20 comprises an angle sensor 9 and a box body 10; the angle sensor 9 is arranged in the box body 10 and can move in the box body 10 to measure the angle change of the anchor rod 6 in the pulling-out process of the rope body 8, the angle sensor 9 is connected with the other end of the rope body 8, and the box body 10 is fixedly connected with the supporting device 30.
In this embodiment, angle sensor 9 is connected with 8 head ends of rope body, and measurable quantity stock 6 is in the process of pulling out, the change of rope body angle. The box body 10 is used for fixing and containing the angle sensor 9, and the bottom of the box body can be connected with a fixed rod 11. Specifically, the box body 10 should be able to stably wrap the angle sensor 9, and a bolt hole is formed at the bottom thereof, so that it is stably connected to the fixing rod 11.
The supporting device 30 is used for being fixed at a preset soil body 13. The supporting device 30 comprises a fixing rod 11 and a bracket 12; the top end of the fixed rod 11 is fixedly connected to the box body 10, and the bottom of the fixed rod 11 is inserted into and fixed at a preset soil body 13; the bracket 12 is fixed to the fixing rod 11 to support and stabilize the fixing rod 11.
In this embodiment, the dead lever 11 fixes the angle sensor 9 at a suitable distance from the anchor rod 6, increases the deflection angle of the measuring rope (rope body 8) in the test process, and improves the test precision. The head is connected with an angle sensor 9 box, and the bottom is inserted and fixed in the soil body which is not influenced by the test. The support 12 is a lockable movable triangular support 12, and a foot support at the bottom of the support 12 provides a larger contact area. After the fixing rod 11 is inserted into the soil body, the fixing rod 11 is supported by the bracket 12, so that the whole measuring device is kept stable. The fixing rod 11 is preferably a rigid metal rod that is telescopic, with the head connected to the angle sensor 9 and the bottom insertable and fixable in a field that is not affected by the test. The fixing rod 11 inserted into the soil body is supported by the bracket 12, so that the whole device does not shake or displace to influence the test result in the test process. Therefore, in the whole test, the test result can be ensured to be not influenced by other displacements except the displacement of the anchor rod 6 during the test.
The rope measuring device 7 is fixedly connected with the anchor rod 6 through a hoop. The rope body 8 is a flexible measuring rope made of steel strands and provided with scale marks.
In this embodiment, the measuring rope (rope body 8) adopts the flexible measuring rope with scale marks made of steel strand wires, and when the anchor rod 6 is pulled out, the measuring rope can be pulled out from the measuring rope box by one section, and the force pulled out by the measuring rope is very small, so that the elastic deformation of the measuring rope is caused by the force and is ignored. The rope measuring device 7 is stable and reliable with the anchor rod 6 head, does not generate deflection connection, and can be realized through the hoop. During the test process, the installation position of the measuring rope is adjusted to enable the measuring rope to stretch naturally. The measuring rope is not suitable to be overlong, and the pulling length of the measuring rope at the beginning of the test is preferably controlled within 50-100 cm. The stable connection of the box body 10 and the anchor rod 6 is realized through the hoop, and the effect can be achieved by using connection modes such as a rubber valve and the like.
Referring to fig. 1, the present invention further provides an anchor head displacement measuring system, which comprises the above-mentioned anchor head displacement measuring device, an anchor rod 6, an anchorage device 5, a jack 4 and a bearing plate 3; the other end of the anchor rod 6 is inserted into a preset anchoring soil body 1, the anchor 5 and the jack 4 are respectively sleeved on the anchor rod 6, and the bearing plate 3 is arranged between the jack 4 and a supporting surface 2 provided by the anchoring soil body 1.
The essential of anchor head displacement is the change of anchor head position, and this device can decompose anchor head position change into the change of distance and the change of angle and measure, combines the change of distance with the change of angle and carries out trigonometric function conversion processing, can obtain the accurate displacement volume of anchor head. Therefore, the utility model provides an anchor head displacement measurement method adopts as above anchor head displacement measurement device to realize, including step S1-S3:
s1, reading the initial reading L1 of the rope body 8; wherein the initial reading L1 is the sum of the length of the rope body 8 initially pulled out and the length from the connection point of the angle sensor 9 and the rope body 8 to the spherical center of the angle sensor 9.
In this embodiment, the initial test please refer to fig. 2, and fig. 2 is an initial test schematic diagram of an anchor head displacement measuring device provided by the present invention; an initial reading L1 of the rope body 8 is taken. L1 and L2 should be the sum of the length of the drawn-out measuring string and the length from the connection of the angle sensor 9 and the measuring string to the center of the sphere of the angle sensor 9, so that the measuring string scale mark can be recorded from the length from the connection of the angle sensor 9 and the measuring string to the center of the sphere of the angle sensor 9.
S2, applying a test force to the rope body 8, and reading the current reading L2 of the rope body 8 and the rope body 8 deflection angle alpha shown by the angle sensor 9 after the application of the test force is finished; wherein the initial reading L2 is the sum of the currently pulled length of the rope body 8 and the length from the joint of the angle sensor 9 and the rope body 8 to the spherical center of the angle sensor 9.
In this embodiment, refer to fig. 3 at the end of the test, and fig. 3 is a schematic end view of the test of the anchor head displacement measuring device provided by the present invention. At this time, the reading L2 of the rope body 8 and the rope deflection angle α indicated by the angle sensor 9 are read, and at this time, L1, L2 and the anchor head displacement L3 form a triangle.
S3, cos α ═ by the triangle cosine theorem (L1)2+L22-L32) (2 x L1 x L2), anchor head displacement L3 was calculated.
In this embodiment, the cosine theorem of triangle cos α is (L1)2+L22-L32) And (2) L1L 2), the anchor head displacement L3 can be solved. During the test, the problem that the deflection angle alpha is too small due to overlong L1 and L2 may exist, and then the fixing rod 11 is used for fixing the angle sensor 9 box at a position close to the anchor head, so as to control the initial reading L1 of the rope body 8, and the test precision is not influenced too much.
Preferably, the anchor head displacement measuring method further includes step S4:
s4, the rope body 8 and the angle sensor 9 are kept in the same straight line, so that the deflection direction of the angle sensor 9 is consistent with the extraction direction of the anchor rod 6.
In this embodiment, guarantee that rope body 8 and angle sensor 9 remain the same straight line throughout the testing process, also guaranteed that angle sensor 9's deflection direction is unanimous with the direction of pulling out of stock 6.
To sum up, the utility model discloses the principle that adopts is simple direct, through measuring triangle-shaped both sides and contained angle, calculates out the principle of third side length, calculates the anchor head displacement. Compared with the existing reference beam structure, the device is simple to erect, and especially when tests of side slopes and foundation pit supporting are carried out, the device can improve the working efficiency by the characteristic of low site requirements. When each node is connected, the device also has the problems that the dial indicator is easy to slide, the reference beam shakes and the like in the traditional mode, and the test accuracy is improved. Compare traditional benchmark roof beam method, erect conveniently, require lowly to the place, only need fixed "measuring device dead lever 11" alright make whole anchor head displacement measurement device stable. On this basis, the principle of having used triangle-shaped surveys the anchor head displacement and reads, because of the utility model discloses a survey rope box fixed point, 9 fixed point connected nodes of angle sensor all are fixed, compare traditional percentage table direct reading anchor head displacement mode, can effectively reduce because of the percentage table gauge head slides, the magnetism gauge stand twists reverse, the benchmark roof beam rocks etc. test error.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. An anchor head displacement measuring device is characterized by comprising a rope measuring device, a rope body, an angle measuring device and a supporting device;
the rope measuring device is used for retracting the rope body, locking the length of the rope body and reading the length, and is fixed at one end of the anchor rod and connected with one end of the rope body;
the angle measuring device is used for measuring the angle change of the rope body in the pulling-out process of the anchor rod, and the angle measuring device is connected with the other end of the rope body and fixedly connected to the supporting device;
the supporting device is used for being fixed at a preset soil body.
2. The anchor head displacement measuring device of claim 1, wherein the cable measuring device is fixedly connected with the anchor rod through a hoop.
3. The anchor head displacement measuring device of claim 1, wherein the angle measuring device comprises an angle sensor and a box;
the angle sensor is arranged in the box body and can move in the box body to measure the angle change of the rope body in the process of pulling out the anchor rod, the angle sensor is connected with the other end of the rope body, and the box body is fixedly connected with the supporting device.
4. The anchor head displacement measuring device of claim 3, wherein the support means comprises a fixing rod and a bracket;
the top end of the fixed rod is fixedly connected to the box body, and the bottom of the fixed rod is inserted into and fixed at a preset soil body; the bracket is fixed to the fixing rod to support and stabilize the fixing rod.
5. The anchor head displacement measuring device of claim 1, wherein the rope body is a flexible, graduated-mark measuring rope made of steel strands.
6. An anchor head displacement measuring system, comprising the anchor head displacement measuring device of any one of claims 1 to 5, an anchor rod, an anchor, a jack, and a bearing plate;
the anchor rod is characterized in that the other end of the anchor rod is inserted into a preset anchoring soil body, the anchor and the jack are respectively sleeved on the anchor rod, and the bearing plate is arranged between the jack and a supporting surface provided by the anchoring soil body.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021872300.6U CN212452833U (en) | 2020-08-31 | 2020-08-31 | Anchor head displacement measuring device and system |
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| CN202021872300.6U CN212452833U (en) | 2020-08-31 | 2020-08-31 | Anchor head displacement measuring device and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111962574A (en) * | 2020-08-31 | 2020-11-20 | 深圳市勘察研究院有限公司 | Anchor head displacement measuring device, system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111962574A (en) * | 2020-08-31 | 2020-11-20 | 深圳市勘察研究院有限公司 | Anchor head displacement measuring device, system and method |
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