CN204085979U - A kind of jaw type anti-settling instrument - Google Patents
A kind of jaw type anti-settling instrument Download PDFInfo
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- CN204085979U CN204085979U CN201420512797.9U CN201420512797U CN204085979U CN 204085979 U CN204085979 U CN 204085979U CN 201420512797 U CN201420512797 U CN 201420512797U CN 204085979 U CN204085979 U CN 204085979U
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- adjustable clamp
- balance stem
- movable bolt
- settling
- key
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Abstract
The utility model relates to a kind of jaw type anti-settling instrument of rock mass discontinuity, mainly comprises several parts such as main body rack, balance stem, butterfly nut, key-type adjustable clamp and counterbalance weight; Key-type adjustable clamp comprises adjustable clamp, fixing pincers, movable bolt and fixed pin four parts; Main body rack has a vertical chute, balance stem by degree of tightness butterfly nut thus realize move up and down at main body rack; Counterbalance weight is installed in one end of balance stem, whole system is balanced, other end assembly wrench type adjustable clamp, the movable bolt of adjustable spanner type adjustable clamp, makes adjustable clamp stretching motion, thus blocks sample, again fixed pin is inserted movable bolt, thus make whole plench tightly clamp sample; In the manufacturing process of structural plane model, by using the anti-settling instrument of structural plane model, making it maintain static structural fece sample clamping, avoiding its uneven sedimentation and the excessive phenomenon of settling amount.
Description
Technical field
The utility model relates in rock mechanics " XJ-type portable type boxshear apparatus measures structural plane shear resistance " adopts the manufacture technology field of structural plane model, is specifically related to a kind of jaw type anti-settling instrument.
Background technology
Rock mass is modal failure mode in engineering rock mass along the shear failure of structural plane, and therefore, the stability study of rock mass also pays close attention to most the shear property of rock mass discontinuity.In correlation engineering fields such as geology, water conservancy, railway, highway, municipal administrations, the Shear Strength Index of structural plane is one of very important mechanics parameter in engineering design and stability evaluation of rock mass, if Shear Strength Index is inaccurate cause relatively large deviation by directly causing during engineer applied, it is also the whether accurate security greatly affecting engineering of Shear Strength Index.The Shear Strength Index of rock mass discontinuity generally will be determined by shop experiment or in-situ test, but because in-situ test is to many requirements such as rock outcrop, testing equipment and test sites, the method of many employings shop experiment obtains the Shear Strength Index of rock mass discontinuity, and wherein applying maximum is use XJ mono-type portable type boxshear apparatus to carry out rock mass discontinuity direct shear test.Carry out joint straight shear test, first will make structural plane model, in manufacturing process due to the mobility of sand-cement slurry and rock mass discontinuity sample Gravitative Loads, sample is uneven sedimentation and the excessive phenomenon of settling amount in the original mold filling sand-cement slurry.
In water conservancy and hydropower rock mechanics experiment code (SL264-2001), require during joint straight shear test that the point of resultant force of Normal stress and shear load is positioned at the center of shear surface, Normal stress central axis is in shear surface and by its center.And in the manufacturing process of structural plane model, the phenomenon of structural fece sample uneven sedimentation in the original mold filling sand-cement slurry, structural plane is caused to tilt out-of-level, there is error angle, made structural plane model is when carrying out direct shear test, structural plane can not be vertical with vertical force added by direct shear apparatus, causes normal force and shear direction to be off plumbs, causes test findings to occur obvious errors or even mistake.Moreover if structural fece sample settling amount in the original mold of sand-cement slurry is excessive, even causing is the contact of upper and lower model, then sample preparation failure.Or to cause structural fece sample to exceed original mold frame many owing to not carrying out pressing pressure, after causing upper and lower model to put into shear box, jacking header cannot head into, and causes this structural plane model to make unsuccessfully, and this structural fece sample cancels.Therefore, if the appearance of above-mentioned situation can be avoided in sample making course, the accuracy and efficiency of test will be improved to a great extent.The utility model be intended to eliminate the non-uniform settling of above-mentioned indication and settling amount excessive, by using jaw type anti-settling instrument to be maintained static by structural fece sample, avoid the non-uniform settling of structural fece sample and the generation of the excessive phenomenon of settling amount.
Summary of the invention
The utility model provides a kind of jaw type anti-settling instrument, there is non-uniform settling and the excessive shortcoming of settling amount for solving when structural fece sample makes.This anti-settling instrument not only structure simple, dismantle easy, easy to operate, and cost performance is high, and result of use is good.
Technical problem to be solved in the utility model realizes by the following technical solutions:
A kind of jaw type anti-settling instrument, comprises main body rack 1, balance stem 1,2, nut, key-type adjustable clamp 1 and counterbalance weight 1; Have vertical chute in the middle of described main body rack, balance stem can move up and down through the chute in main body rack in chute, and is fixed by the nut of chute both sides; Described balance stem is a screwed straight-bar, and one end of described balance stem is provided with key-type adjustable clamp, and its other end is provided with counterbalance weight.
The above key-type adjustable clamp is made up of adjustable clamp, fixing pincers, movable bolt and fixed pin four parts; The two ends of described movable bolt are in the hole 1 of fixing pincers; Described adjustable clamp two ends are in the hole 2 of fixing pincers; Described movable bolt and described adjustable clamp are in interlaced state, and movable bolt can drive the rotation of adjustable clamp by rotating; Described fixed pin inserts among movable bolt.
Be uneven surface inside the jaw of above-described key-type adjustable clamp; When rock sample is between fixing pincers and adjustable clamp, the rotation of adjustable clamp is driven by rotating movable bolt, increase or reduce the snap-in force to fixing pincers and adjustable clamp front end, rock sample is fixed between fixing pincers and adjustable clamp, now, insert among movable bolt with fixed pin, guarantee steadily can vise rock sample again.
The end of above-described key-type adjustable clamp has a threaded hole, balance stem is threaded in this hole, is fixed on balance stem by key-type adjustable clamp.
Above-described counterbalance weight is provided with threaded hole and the air level for finely tuning; Described balance stem is threaded into threaded hole on counterbalance weight, made the whole machine balancing of described anti-settling instrument in the position of balance stem by adjustment block, and the air level on fine adjustment counterbalance makes system terminal level.
The above nut is butterfly nut.
As shown from the above technical solution, a kind of jaw type anti-settling instrument that the utility model provides comprises main body rack 1, balance stem 1, butterfly nut 2, key-type adjustable clamp 1 (containing adjustable clamp, fixing pincers, movable bolt, fixed pin), counterbalance weight 1; This instrument is assembled, and by the horizon bar leveling on support.In the manufacturing process of the structural plane model before direct shear test, the bayonet socket of front end monkey wrench is utilized to fix structural fece sample, and be placed in directly over test sample-producing die central authorities, a certain amount of sand-cement slurry is built again in original mold, after reaching a certain height, start sample down slowly to hang from center.Unclamp screw, shifting balance bar, make the face of being cut of structural fece sample only exceed the about 4 ~ 5mm of original mold frame, and utilize the air level on counterbalance weight to carry out leveling, then balance stem both sides nut screwing clamping is fixed, and then joints cement mortar fills up tamping.When structural plane model makes, by using the anti-settling instrument of structural fece sample, make it maintain static structural plane clamping, avoid its uneven sedimentation and settling amount excessive.
Technique effect of the present utility model is: side main body rack being placed on casting mold, and all parts assembling instrument, then fix adjustable clamp by key-type and clamp structural fece sample.Hang structural fece sample, unclamp nut, moving up and down balance stem again makes the face of being cut of structural fece sample exceed the about 4 ~ 5mm place of original mold frame, then balance stem nut is tentatively fixing, and utilize the fine setting of the air level on counterbalance weight to make it complete level, then fixed by movable stock both sides nut screwing clamping, ensure that structural fece sample not uneven sedimentation and control the settling amount of structural fece sample in sand-cement slurry, after sand-cement slurry is solidified, anti-settling instrument can be removed by (about 24h).
The utility model compared with prior art has following advantage:
1, the utility model anti-settling instrument principle is simple, directly perceived, and not only balance stem can rotate, and also can clip sample and move up and down in chute, and expanding can the altitude range of clamp structure face style and the operating space of experiment;
2, the utility model anti-settling instrument has counterbalance weight, can the balance of conditioning instrumentation entirety well, utilizes the air level on it simultaneously, can fine adjustment counterbalance, makes sample level, the anti-settling is comparatively clamping determine sample have better equilibrium activity;
3, the utility model anti-settling instrument structure is simple, be easy to carry, handled easily, be easy to dismounting, cheap, result of use good;
4, the utility model anti-settling instrument can play the effect of fixed sturcture interview sample, makes it be fixed on a certain height, and not because there is the excessive and non-uniform settling of sedimentation under the mobility of sand-cement slurry and the Gravitative Loads of sample;
5, the clamping action of adjustable clamp fixed by the utility model anti-settling instrument by key-type, can well interview sample and not cause its arbitrarily movement by clamp structure, thus make sample keep certain height and level.
Accompanying drawing explanation
Fig. 1 is the one-piece construction schematic diagram of the utility model anti-settling instrument.
Fig. 2 is the fixing pincers schematic diagram of the utility model key-type adjustable clamp.In above-mentioned figure: 1-adjustable clamp, 2-movable bolt, 3-fix pincers, 4-nut, 5-balance stem, 6-counterbalance weight, 7-main body rack, 8-fixed pin, 9-air level, 10-fixing pincers hole 1,11-fixing pincers hole 2.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
As shown in Figure 1, this anti-settling instrument mainly comprises several parts such as main body rack, balance stem, butterfly nut, key-type adjustable clamp (containing adjustable clamp, fixing pincers, movable bolt, fixed pin) and counterbalance weight to a kind of jaw type anti-settling instrument one-piece construction figure that the utility model provides; Main body rack has a vertical chute, balance stem by degree of tightness butterfly nut thus realize move up and down at main body rack; Counterbalance weight is installed in one end of balance stem, whole system is balanced, other end assembly wrench type adjustable clamp, the movable bolt of adjustable spanner type adjustable clamp, makes adjustable clamp stretching motion, thus blocks sample, again fixed pin is inserted movable bolt, thus make whole plench tightly clamp sample.
In the present embodiment, main body rack height is 60cm, and lower end is square body, is convenient to whole stable system, and centre is rectangle chute, can move up and down wherein, the wide 2cm of chute for balance stem; Balance stem is screw-thread steel, and cross-sectional diameter is 2cm, long 45cm; Two nuts, bore diameter is 2cm; Counterbalance weight is of a size of 8cm × 8cm × 8cm, and end face, with air level, locks together by screw thread balance stem; The balance stem other end is key-type adjustable clamp, and two tong maximum spacings can be adjusted to 15cm, so as to grip more sizes structural fece sample.The structural plane size experimentally required, in this experiment, the size General Requirements of structural fece sample is the rectangular parallelepiped of 3cm × 3cm ~ 12cm × 12cm, high 2-5cm, and anti-settling instrument of the present utility model satisfies condition all completely for the structural fece sample of 3-12cm.
In order to the operating process of the jaw type anti-settling instrument of direct shear test structural plane sample is described, the utility model is described by the modelling process being of a size of the structural fece sample of 10cm × 10cm.
Before structural plane model makes, back side panel inwall is coated with last layer thin butter layer before a mold, and a multiple upper kraft, to make the model made easily depart from front and back side plate inwall, in mold half, then add a small amount of sand-cement slurry (needing to revise); Centered by model, support is placed on one side position, assembles instrument.
Now the anti-settling instrument of structural fece sample is placed on model side, opens key-type adjustable clamp, structural fece sample is blocked, make to contact with structural fece sample two sides inside key-type adjustable clamp, now block movable bolt with fixed pin.Slowly adjustment bar two ends length makes its two ends roughly balance, and then tentatively regulates two end nuts, is clamped by sample and keeps being cut face level; Further setting nut again, allows balance stem move up and down, when making the face of being cut in sample structure face exceed the about 4 ~ 5mm of original mold frame, air level on fine adjustment counterbalance, tighten the nut on main body rack again, make overall fixing, with stop the uneven sedimentation of structural plane or settling amount excessive.
Solidify after (about 24h) until sand-cement slurry, unscrew movable bolt, remove key-type adjustable clamp; Again the model made is taken out from mould, the cement residue on mould is cleaned out.The same use anti-settling instrument identical with above-mentioned steps when making second half model.Before and after empty mould, side plate inwall is coated with the thin butter layer of last layer again, and a multiple upper kraft, add appropriate mortar again, the filler strip that cracks respectively is put at mould frame two ends, by that half model reversing of having solidified, utilize grip block to clamp model, recycling jaw type anti-settling instrument hangs, make sample structure interview the face of being cut of sample when exceeding the about 4 ~ 5mm of original mold frame, then the nut tightened on support fix moving screw.After 24h, remove anti-settling instrument and mould, take out sample, carry out maintenance, such structural plane model has just completed.
Claims (6)
1. a jaw type anti-settling instrument, is characterized in that: comprise main body rack 1, balance stem 1,2, nut, key-type adjustable clamp 1 and counterbalance weight 1; Have vertical chute in the middle of described main body rack, balance stem can move up and down through the chute in main body rack in chute, and is fixed by the nut of chute both sides; Described balance stem is a screwed straight-bar, and one end of described balance stem is provided with key-type adjustable clamp, and its other end is provided with counterbalance weight.
2. a kind of jaw type anti-settling instrument according to claim 1, is characterized in that: described key-type adjustable clamp is made up of adjustable clamp, fixing pincers, movable bolt and fixed pin four parts; The two ends of described movable bolt are in the hole 1 of fixing pincers; Described adjustable clamp two ends are in the hole 2 of fixing pincers; Described movable bolt and described adjustable clamp are in interlaced state, and movable bolt can drive the rotation of adjustable clamp by rotating; Described fixed pin inserts among movable bolt.
3. a kind of jaw type anti-settling instrument according to claim 2, is characterized in that: be uneven surface inside the jaw of described key-type adjustable clamp; When rock sample is between fixing pincers and adjustable clamp, the rotation of adjustable clamp is driven by rotating movable bolt, increase or reduce the snap-in force to fixing pincers and adjustable clamp front end, rock sample is fixed between fixing pincers and adjustable clamp, now, insert among movable bolt with fixed pin, guarantee steadily can vise rock sample again.
4. a kind of jaw type anti-settling instrument according to claim 1, is characterized in that: the end of described key-type adjustable clamp has a threaded hole, balance stem is threaded in this hole, is fixed on balance stem by key-type adjustable clamp.
5. a kind of jaw type anti-settling instrument according to claim 1, is characterized in that: described counterbalance weight is provided with threaded hole and the air level for finely tuning; Described balance stem is threaded into threaded hole on counterbalance weight, made the whole machine balancing of described anti-settling instrument in the position of balance stem by adjustment block, and the air level on fine adjustment counterbalance makes system terminal level.
6. a kind of jaw type anti-settling instrument according to claim 1, is characterized in that: described nut is butterfly nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420512797.9U CN204085979U (en) | 2014-09-09 | 2014-09-09 | A kind of jaw type anti-settling instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420512797.9U CN204085979U (en) | 2014-09-09 | 2014-09-09 | A kind of jaw type anti-settling instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204085979U true CN204085979U (en) | 2015-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420512797.9U Expired - Fee Related CN204085979U (en) | 2014-09-09 | 2014-09-09 | A kind of jaw type anti-settling instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204085979U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110715645A (en) * | 2018-07-12 | 2020-01-21 | 北京中联勘工程技术有限责任公司 | Buried pile state surveying device |
-
2014
- 2014-09-09 CN CN201420512797.9U patent/CN204085979U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110715645A (en) * | 2018-07-12 | 2020-01-21 | 北京中联勘工程技术有限责任公司 | Buried pile state surveying device |
| CN110715645B (en) * | 2018-07-12 | 2021-07-09 | 北京中联勘工程技术有限责任公司 | Buried pile state surveying device |
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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: 20150107 Termination date: 20150909 |
|
| EXPY | Termination of patent right or utility model |