CN203519213U - Device for measuring pulling force and displacement in original-position pulling for plant - Google Patents
Device for measuring pulling force and displacement in original-position pulling for plant Download PDFInfo
- Publication number
- CN203519213U CN203519213U CN201320709628.XU CN201320709628U CN203519213U CN 203519213 U CN203519213 U CN 203519213U CN 201320709628 U CN201320709628 U CN 201320709628U CN 203519213 U CN203519213 U CN 203519213U
- Authority
- CN
- China
- Prior art keywords
- displacement
- plate
- pull bar
- screw mandrel
- pulling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
Provided is a device for measuring pulling force and displacement in original-position pulling for a plant. The device comprises a three-legged support. The top end of the three-legged support is fixedly provided with a lower plate. A framework structure is formed by the lower plate and an upper plate. At least one guiding column is arranged between the lower plate and the upper plate. An intermediate plate is slidably arranged on the guiding column. A displacement sensor is arranged between the intermediate plate and the lower plate or between the intermediate plate and the upper plate. A lower end of a pulling rod penetrates through the lower plate and is connected with a clamp via a steel wire rope. The upper end of the pulling rod is fixedly connected with the lower end of a screw rod. The screw rod penetrates through the intermediate plate and is matched with a lifting nut fixedly arranged on the upper plate in a threaded way. The screw rod and the intermediate plate are connected in way that the screw rod and the intermediate plate can rotate but cannot axially move. The upper end of the screw rod is fixedly connected with a hand wheel. A stress sensor is also arranged between the pulling rod and the screw rod or between the pulling rod and the steel wire rope. The displacement sensor and the stress sensor which are simultaneously arranged on different positions are adopted so that numerical values of pulling force and displacement can be directly and conveniently read in the process of pulling the plant.
Description
Technical field
The utility model relates to a kind of measurement mechanism, and particularly the device of pulling capacity and displacement is measured in a plant original position drawing.
Background technology
In the project implementing process such as highway, railway, water conservancy, electric power, mining, be often accompanied by a large amount of excavations, thereby destroyed original vegetation cover, cause a large amount of soils exposed, cause a series of ecological environment problems.For these exposed side slopes, ecological revetment technology has wide application space in the protection of these bare side slopings, and root system of plant possesses reinforcement, auxiliary solid effect, its surrounding soil can be frapped, and has certain supporting role.In protecting slope ecology engineering, conventionally by plant being carried out to original position pull-out test, be used as the index of evaluate plant roots system to the contribution of side slope soil body stability.
In the on-the-spot original position pull-out test of plant, usually need to measure the pulling capacity of root system of plant, if adopt spring tension meter and tape measure, be difficult to plant to be fixed, also be difficult to read accurately pulling force, and cannot the displacement in drawing process transient measurement plant, this not only makes experimental data inaccurate, also to user, brings very large operating difficulties simultaneously.
Summary of the invention
Technical problem to be solved in the utility model is to provide the device that pulling capacity and displacement are measured in a plant original position drawing, easy to operate, and the device of energy while Measurement accuracy pulling capacity and displacement.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: the device of pulling capacity and displacement is measured in a plant original position drawing, comprise three-legged support, three-legged support top is installed with lower plate, upper plate and lower plate form framed structure, between lower plate and upper plate, be provided with at least one guidepost, middle plate is positioned on guidepost slidably, between middle plate and lower plate or between middle plate and upper plate, is being provided with displacement transducer;
Pull bar lower end is passed lower plate and is connected with fixture by wire rope, pull bar upper end is fixedly connected with the lower end of screw mandrel, screw mandrel forms threaded engagement through middle plate and the lifting nut that is installed in upper plate, between screw mandrel and middle plate, adopt rotatably not axially displaceable mode to be connected, the upper end of screw mandrel is fixedly connected with handwheel;
Between pull bar and screw mandrel or between pull bar and wire rope, be also provided with strain gauge.
Syndeton between screw mandrel and middle plate is: screw mandrel lower end is through middle plate and bearing seat, in bearing seat, be provided with thrust bearing, the lower surface of screw mandrel is fixedly connected with bearing seat with hexagon socket head cap screw by plain washer, and pull bar web member is fixedly connected with bearing seat, and pull bar is connected with pull bar web member.
Described guidepost is two.
Described displacement transducer is two, the symmetrical both sides that are positioned at pull bar.
Described fixture is spring clamp or rope sling.
Described fixture is hinged at middle part by the parts of two serpentines, and wire rope is connected with one end of two serpentine parts simultaneously, and the other end is as jaws, so that during wire rope tension, jaws is also tightened up.
Described fixture is provided with spring so that jaws has initial clamping force.
Described displacement transducer two ends connect by the structure of sensor support base.
The device of pulling capacity and displacement is measured in the plant original position drawing that the utility model provides, by adopt displacement transducer and the strain gauge that is arranged on diverse location, pulling force and displacement numerical value in the time of can reading drawing plant to direct convenience simultaneously.Displacement transducer and strain gauge all adopt removable design, thereby are convenient to change the sensor of different ranges, to adapt to different plant.Support of the present utility model adopts the tripod using in similar Surveying Engineering, use with the strap of adjustable length latch closure three legs of tripod are fixed, regulate the just height of regulating device easily of latch closure, simultaneously, as fixing latch closure and keep the length of three legs consistent, in the time of can guaranteeing to measure, the direction of power and displacement be perpendicular to device ground, place; When the moment that material is extracted from ground; the sudden change of meeting generation power; adopt the mode that wire rope connects and do not adopt the mode that fixture is directly connected to strain gauge, can prevent that the power that strain gauge is subject to from undergoing mutation, playing the effect of protection strain gauge.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail:
Fig. 1 is that one-piece construction master of the present utility model looks schematic diagram.
Fig. 2 is the schematic side view of Fig. 1.
Fig. 3 is the schematic top plan view of Fig. 1.
Fig. 4 is the syndeton schematic diagram of screw mandrel and pull bar in the utility model.
In figure: handwheel 1, lifting nut 2, top nut 3, upper plate 4, screw mandrel 5, middle plate 6, sensor support base 7, displacement transducer 8, guidepost 9, lower plate 10, lower nut 11, pull bar 12, three-legged support 13, strain gauge 14, wire rope 15, fixture 16, bearing seat 17, thrust bearing 18, plain washer 19, hexagon socket head cap screw 20, pull bar web member 21.
Embodiment
In Fig. 1 ~ 3, the device of pulling capacity and displacement is measured in one plant original position drawing, comprise three-legged support 13, three-legged support 13 in this example, three-legged support 13 tops are installed with lower plate 10, and lower plate 10 and the framed structure that upper plate 4 forms, be provided with at least one guidepost 9 between lower plate 10 and upper plate 4, middle plate 6 is positioned on guidepost 9 slidably, between middle plate 6 and lower plate 10 or between middle plate 6 and upper plate 4, is being provided with displacement transducer 8;
Between pull bar 12 and screw mandrel 5 or between pull bar 12 and wire rope 15, be also provided with strain gauge 14.
During use, first according to experiment, need to this, regulate the height of three-legged support 13 by regulating latch closure to regulate the length of strap, extend simultaneously and shorten wire rope, wire rope is extended naturally, the fixture that wire rope connects is kiss the earth just; During experiment, first by adjustment handwheel, making the displacement of the movable end of displacement transducer is zero, by clamp clamps, test plant, wire rope is in natural elongation state, rotate handwheel 1, screw mandrel 5 changes into the gyration of handwheel 1 rectilinear motion of middle plate 6, pull bar 12, wire rope 15 and fixture 16, the display of strain gauge 14 shows the pulling force numerical value that wire rope connects, the movable end of plate 6 traction displacement transducers during the display of displacement transducer 8 shows and the displacement numerical value that produces makes experimenter can read pulling force numerical value and the displacement numerical value in arbitrary moment simultaneously; Reach after experiment purpose, the handwheel that can stop operating takes off the plant on fixture simultaneously, and the utility model is simple to operate, convenient and easy.
Wherein, syndeton between screw mandrel 5 and middle plate 6 is as shown in Figure 4: screw mandrel 5 lower ends are through middle plate 6 and bearing seat 17, in bearing seat 17, be provided with thrust bearing 18, the lower surface of screw mandrel 5 is fixedly connected with bearing seat 17 with hexagon socket head cap screw 20 by plain washer 19, pull bar web member 21 is fixedly connected with bearing seat 17, and pull bar 12 is connected with pull bar web member 21.
Preferably, in Fig. 1, described guidepost 9 is two.Structure thus, guarantees to move up and down the stress equalization of middle plate 6 more steady.
Preferably, in Fig. 1, described displacement transducer 8 is two, the symmetrical both sides that are positioned at pull bar 12.Structure, guarantees the stress equalization of displacement transducer 8, thereby measures more accurate thus.
Optionally, described fixture 16 is spring clamp or rope sling.Adopt the common clip advantage with spring to be to be convenient to obtain.Adopt end to have hook, after plant, be suspended to again the structure that forms rope sling on wire rope, be convenient to very much fix, and when wire rope is strained, rope sling just tightens up thereupon.
In another optional scheme, as shown in fig. 1, described fixture 16 is hinged at middle part by the parts of two serpentines, and wire rope 15 is connected with one end of two serpentine parts simultaneously, and the other end is as jaws, so that during wire rope 15 tension, jaws is also tightened up.Structure, can make the clamping force of jaws be directly proportional to the pulling force of wire rope 15 thus.Be that more clamping force is also larger for pulling force.That optimizes arranges hangnail or increases the structures such as rubber blanket of friction force in jaws, can avoid fixture 16 to come off.
In the scheme of optimizing, described fixture 16 is provided with spring so that jaws has initial clamping force.Spring is not shown in the drawings.Structure, is convenient to initial operation thus.
Described displacement transducer 8 two ends connect by the structure of sensor support base 7.Structure, is convenient to change bit displacement sensor 8 thus.Correspondingly the connection of strain gauge 14 also adopts easy-to-dismount structure, for example mode with bolts.
Claims (8)
1. the device of pulling capacity and displacement is measured in a plant original position drawing, comprise three-legged support (13), it is characterized in that: three-legged support (13) top is installed with lower plate (10), upper plate (4) forms framed structure with lower plate (10), between lower plate (10) and upper plate (4), be provided with at least one guidepost (9), it is upper that middle plate (6) is positioned at guidepost (9) slidably, between middle plate (6) and lower plate (10) or between middle plate (6) and upper plate (4), is being provided with displacement transducer (8);
Pull bar (12) lower end is connected with fixture (16) through lower plate (10) and by wire rope (15), pull bar (12) upper end is fixedly connected with the lower end of screw mandrel (5), screw mandrel (5) forms threaded engagement through middle plate (6) and the lifting nut (2) that is installed in upper plate (4), between screw mandrel (5) and middle plate (6), adopt rotatably not axially displaceable mode to be connected, the upper end of screw mandrel (5) is fixedly connected with handwheel (1);
Between pull bar (12) and screw mandrel (5) or between pull bar (12) and wire rope (15), be also provided with strain gauge (14).
2. the device of pulling capacity and displacement is measured in a plant original position drawing according to claim 1, it is characterized in that: the syndeton between screw mandrel (5) and middle plate (6) is: screw mandrel (5) lower end is through middle plate (6) and bearing seat (17), in bearing seat (17), be provided with thrust bearing (18), the lower surface of screw mandrel (5) is fixedly connected with bearing seat (17) with hexagon socket head cap screw (20) by plain washer (19), pull bar web member (21) is fixedly connected with bearing seat (17), and pull bar (12) is connected with pull bar web member (21).
3. the device of pulling capacity and displacement is measured in a plant original position drawing according to claim 1, it is characterized in that: described guidepost (9) is two.
4. the device of pulling capacity and displacement is measured in a plant original position drawing according to claim 3, it is characterized in that: described displacement transducer (8) is two the symmetrical both sides that are positioned at pull bar (12).
5. the device of pulling capacity and displacement is measured in a plant original position drawing according to claim 1, it is characterized in that: described fixture (16) is spring clamp or rope sling.
6. the device of pulling capacity and displacement is measured in a plant original position drawing according to claim 1, it is characterized in that: described fixture (16) is hinged at middle part by the parts of two serpentines, wire rope (15) is connected with one end of two serpentine parts simultaneously, the other end is as jaws, so that wire rope (15) when tension, jaws is also tightened up.
7. the device of pulling capacity and displacement is measured in a plant original position drawing according to claim 6, it is characterized in that: described fixture (16) is provided with spring so that jaws has initial clamping force.
8. the device of pulling capacity and displacement is measured in a plant original position drawing according to claim 1, and described displacement transducer (8) two ends connect by the structure of sensor support base (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320709628.XU CN203519213U (en) | 2013-11-12 | 2013-11-12 | Device for measuring pulling force and displacement in original-position pulling for plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320709628.XU CN203519213U (en) | 2013-11-12 | 2013-11-12 | Device for measuring pulling force and displacement in original-position pulling for plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203519213U true CN203519213U (en) | 2014-04-02 |
Family
ID=50378131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320709628.XU Expired - Fee Related CN203519213U (en) | 2013-11-12 | 2013-11-12 | Device for measuring pulling force and displacement in original-position pulling for plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203519213U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592059A (en) * | 2013-11-12 | 2014-02-19 | 三峡大学 | Drawing force and displacement measuring device during plant in-situ drawing |
| CN113933151A (en) * | 2021-09-18 | 2022-01-14 | 中国热带农业科学院橡胶研究所 | Rubber bark tensile strength testing device and testing method |
-
2013
- 2013-11-12 CN CN201320709628.XU patent/CN203519213U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592059A (en) * | 2013-11-12 | 2014-02-19 | 三峡大学 | Drawing force and displacement measuring device during plant in-situ drawing |
| CN103592059B (en) * | 2013-11-12 | 2015-08-05 | 三峡大学 | The device of pulling capacity and displacement is measured in the drawing of plant original position |
| CN113933151A (en) * | 2021-09-18 | 2022-01-14 | 中国热带农业科学院橡胶研究所 | Rubber bark tensile strength testing device and testing method |
| CN113933151B (en) * | 2021-09-18 | 2024-05-03 | 中国热带农业科学院橡胶研究所 | Rubber bark tensile strength testing device and testing method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103592059B (en) | The device of pulling capacity and displacement is measured in the drawing of plant original position | |
| CN101603899B (en) | Field portable experiment system for tensile mechanical property of plant root system | |
| CN205224129U (en) | Single pile basis vertical bearing capacity's experiment detection device | |
| CN101105433B (en) | Portable on-spot and indoor dual-purpose direct-cutting experiment instrument and its sampling method | |
| CN201909739U (en) | Arch structure test device | |
| CN202974240U (en) | Rudder clearance measurement device | |
| CN201695414U (en) | Spiral-plate loading test instrument | |
| CN206399740U (en) | Rock sample long-term stress loading device | |
| CN102252906A (en) | Clayey soil strain control type uniaxial extension meter | |
| CN100510668C (en) | Prestressed cable tension tester | |
| CN204202997U (en) | A kind of root system of plant drawing instrument | |
| CN203037476U (en) | Portable automatic control beam column node two-way load interaction performance testing device | |
| CN203519213U (en) | Device for measuring pulling force and displacement in original-position pulling for plant | |
| CN204228539U (en) | A kind of easy device of shear rheology instrument | |
| CN208125496U (en) | A kind of anchor pole resistance to plucking detection device | |
| CN107036522B (en) | Device and method for measuring vertical displacement of water structure of middle-span and small-span bridge | |
| RU85974U1 (en) | ADJUSTABLE SCREW POWER SUPPLY SUPPORT | |
| CN101813596B (en) | Method for testing osmotic coefficient of non-saturated gas phase of soil body | |
| CN109489883B (en) | Low tower cable-stayed bridge cable anchoring and cable force testing device for large-size model test | |
| CN204101379U (en) | Material extending creep test device | |
| CN201464279U (en) | Portable field test system for tensile mechanical property of plant roots | |
| CN208043555U (en) | A kind of young modulus measuring device | |
| CN204435343U (en) | Pattern foundation pit supporting structure tiltometer | |
| CN202099819U (en) | Treatment device of vertical static load test pile head | |
| CN206223533U (en) | A kind of pull force tester |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20141112 |
|
| EXPY | Termination of patent right or utility model |