CN204662521U - Damping type pre-tensioning device for joint meter - Google Patents
Damping type pre-tensioning device for joint meter Download PDFInfo
- Publication number
- CN204662521U CN204662521U CN201520275135.9U CN201520275135U CN204662521U CN 204662521 U CN204662521 U CN 204662521U CN 201520275135 U CN201520275135 U CN 201520275135U CN 204662521 U CN204662521 U CN 204662521U
- Authority
- CN
- China
- Prior art keywords
- threaded rod
- top board
- roof
- base plate
- joint meter
- 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.)
- Active
Links
- 238000013016 damping Methods 0.000 title abstract 2
- 238000000034 method Methods 0.000 abstract description 6
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 230000007774 longterm Effects 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Landscapes
- Orthopedics, Nursing, And Contraception (AREA)
Abstract
The utility model discloses a device is prestretched to joint meter damping formula belongs to engineering safety monitoring technical field, including bottom plate and roof, be equipped with the threaded rod between bottom plate and the roof, threaded rod one end and bottom plate fixed connection, the other end passes the roof, and the roof can follow the threaded rod and freely slide from top to bottom, be equipped with both ends respectively with the pressure spring of bottom plate and roof contact on the threaded rod between bottom plate and the roof, be equipped with the nut on the threaded rod of roof top, the roof through the precession of nut and its free movement on the threaded rod of backout control. The technical scheme controls the pressure spring to gradually release the thrust through the nut to complete pretension, has the characteristics of uniform stress release, controllable release process and the like, solves the problem that the pretension range is difficult to control due to large artificial randomness in the prior art, does not damage the crack meter by pulling, can greatly improve the pretension quality of the crack meter, and ensures the integrity and long-term stability of the crack meter.
Description
Technical field
The utility model belongs to project security monitoring technical field, relates to a kind of for hydraulic architecture shrinkage joint or the joint meter measured that cracks, especially relates to a kind of joint meter damp type pretension fixing device.
Background technology
For monitoring the folding situation of two adjacent concrete blocks or the relative displacement between concrete block and Rock And Soil, contact surface, usually need at its contact site Embedment and installation joint meter.Current joint meter should carry out prestretching to it before Embedment and installation, can ensure that the string wire of joint meter inside is in tight state on the one hand, improves apparatus installation quality; When joint meter self-condition allows, suitably can expand its range, thus meet engineering actual demand, give full play to effect of joint meter on the other hand.
The prestretching of current joint meter is all implement at the construction field (site), because on-the-spot prestretching substantially just rests on above written requirement, not yet have concrete method of operating and equipment, therefore usually site operation time the means taked have: 1. the free end of joint meter pulled out one section of general distance with iron wire and then fixes; 2. calculate prestretching range, do bamboo chip or the wood chip of several similar length according to this range, then with bamboo chip or wood chip, the free end of joint meter is propped up fixing by force.
Also there are some defects in above-mentioned joint meter prestretching mode, on the one hand, artificial prestretching is by once concentrating pulling force or once concentrating thrust, randomness is large and be difficult to control prestretching range, on the other hand, the stability of joint meter cannot be ensured because prestretching quality can not be ensured, even there is the risk of drawing bad joint meter.
Utility model content
The utility model provides a kind of joint meter damp type pretension fixing device, its processing is simple, cost of manufacture is low, applied widely, be easy to operation, can control prestretching process, time saving and energy saving, thus the joint meter prestretching quality in guarantee practice of construction, improve integrity and the long-time stability of joint meter.
The utility model is achieved by following technical solution.
A kind of joint meter damp type pretension fixing device, comprise base plate and top board, threaded rod is provided with between described base plate and top board, described threaded rod one end is fixedly connected with base plate, the other end is through top board, and top board can threadingly freely up and down slide by bar, the threaded rod between base plate and top board be provided with two ends respectively with the stage clip of base plate and top plate contact, threaded rod above top board is provided with nut, and top board controls it by the precession of nut with back-out and moves freely on threaded rod.
Further, described base plate and top board are " U-shaped ".
Further, the link position of described threaded rod and base plate and top board is " U-shaped " curved side center, and threaded rod is vertical with top board with base plate.
Further, described base plate and top board side are equipped with lock-screw.
Further, the drift of described stage clip is greater than the length after the maximum prestretching of joint meter.
The beneficial effects of the utility model are:
A kind of joint meter damp type pretension fixing device described in the utility model, its beneficial effect is:
1, discharge thrust gradually by nut control stage clip and complete prestretching, there is the features such as stress release is even, dispose procedure is controlled, the artificial randomness solving the existence of existing method is difficult to greatly the problem controlling prestretching range, there will not be the situation of drawing bad joint meter, greatly can improve the prestretching quality of joint meter, ensure that integrity and the long-time stability of joint meter.
2, threaded rod cut to lengthen of the present invention prestretching range, and the scope of achievable prestretching range is wide, therefore all applicable to the demand of a lot of engineering, has good practicality and applicability widely.
3, this device is simply stressed, and stress level is little, less demanding to each component materials, and again because its structure is simple, easy processing and fabricating, therefore cost of manufacture is low, and operation is also very simple, time saving and energy saving.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1-base plate, 2-threaded rod, 3-stage clip, 4-top board, 5-nut, 6-lock-screw.
Detailed description of the invention
The technical solution of the utility model is further described below in conjunction with accompanying drawing, but described in claimed scope is not limited to.
As shown in Figure 1, a kind of joint meter damp type pretension fixing device described in the utility model, comprise base plate 1 and top board 4, threaded rod 2 is provided with between described base plate 1 and top board 4, described threaded rod 2 one end is fixedly connected with base plate 1, the other end is through top board 4, top board 4 can threadingly freely up and down slide by bar 2, threaded rod 2 between base plate 1 and top board 4 is provided with the stage clip 3 that two ends contact with top board 4 with base plate 1 respectively, threaded rod 2 above top board 4 is provided with nut 5, and top board 4 controls it by the precession of nut 5 with back-out and moves freely on threaded rod 2.
Described base plate 1 and top board 4 are " U-shaped ", and described threaded rod 2 is " U-shaped " curved side center with the link position of base plate 1 and top board 4, and threaded rod 2 is vertical with top board 4 with base plate 1.
Described base plate 1 and top board 4 side are equipped with lock-screw 6, and lock-screw 6 penetrates from base plate 1 and top board 4 side.
The drift of described stage clip 3 is greater than the length after the maximum prestretching of joint meter, to ensure that joint meter meets the requirements of prestretching length.
During work, rotating nut 5, compression press spring 3 is to suitable length, respectively base plate 1 be connected with joint meter fixed end and free end respectively with top board 4 and be locked by lock-screw 6, opposite spin nut 5, discharges the elastic force of stage clip 3 gradually, promotes top board 4 and slowly steadily separates with base plate 1, when the calculating prestretching length soon close to joint meter, now precession or back-out nut 5 can precisely complete prestretching work further.
Embodiment
Suppose that joint meter prestretching range is L, so first, by nut 5 precession one section of distance slightly larger than L on threaded rod 2 top, stage clip 3 is made to be in compressive state, then base plate 1 is enclosed within the fixed end of joint meter, the lock-screw 6 screwing base plate 1 side is locked, then top board 4 is enclosed within the free end of joint meter, the lock-screw 6 screwing top board 4 side is locked; Then, slowly screw out the nut 5 on threaded rod 2 top, under the resilient force of stage clip 3, the free end of joint meter is slowly released by top board 4, when close to prestretching range L, the reading that reading joint meter shows can obtain the actual range L ＇ that now joint meter is stretched; If L ＇ < is L, then continue to screw out nut 5, until L ＇ ≈ L can stop; If L ＇ > L, then prestretching has exceeded joint meter and has calculated prestretching range, now by precession nut 5, spring 3 is relaxed, joint meter free end can under the effect of therein pulling force automatic retracted, until L ＇ ≈ L can stop.By aforesaid operations, the prestretching process of joint meter accurately can be controlled.
Claims (5)
1. a joint meter damp type pretension fixing device, comprise base plate (1) and top board (4), it is characterized in that: between described base plate (1) and top board (4), be provided with threaded rod (2), described threaded rod (2) one end is fixedly connected with base plate (1), the other end is through top board (4), top board (4) can threadingly freely up and down slide by bar (2), threaded rod (2) between base plate (1) and top board (4) is provided with the stage clip (3) that two ends contact with top board (4) with base plate (1) respectively, the threaded rod (2) of top board (4) top is provided with nut (5), top board (4) controls it by the precession of nut (5) with back-out and moves freely on threaded rod (2).
2. a kind of joint meter damp type pretension fixing device according to claim 1, is characterized in that: described base plate (1) and top board (4) are " U-shaped ".
3. a kind of joint meter damp type pretension fixing device according to claim 2, it is characterized in that: described threaded rod (2) is " U-shaped " curved side center with the link position of base plate (1) and top board (4), and threaded rod (2) is vertical with top board (4) with base plate (1).
4. a kind of joint meter damp type pretension fixing device according to claim 1, is characterized in that: described base plate (1) and top board (4) side are equipped with lock-screw (6).
5. a kind of joint meter damp type pretension fixing device according to claim 1, is characterized in that: the drift of described stage clip (3) is greater than the length after the maximum prestretching of joint meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520275135.9U CN204662521U (en) | 2015-04-30 | 2015-04-30 | Damping type pre-tensioning device for joint meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520275135.9U CN204662521U (en) | 2015-04-30 | 2015-04-30 | Damping type pre-tensioning device for joint meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204662521U true CN204662521U (en) | 2015-09-23 |
Family
ID=54132917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520275135.9U Active CN204662521U (en) | 2015-04-30 | 2015-04-30 | Damping type pre-tensioning device for joint meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204662521U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106995173A (en) * | 2016-01-22 | 2017-08-01 | 株式会社日立制作所 | The restored method of restraint device, the elevator for possessing restraint device and restraint device |
| CN109781324A (en) * | 2019-01-07 | 2019-05-21 | 中国石油天然气股份有限公司 | Pipeline Misses stress monitoring system and method |
-
2015
- 2015-04-30 CN CN201520275135.9U patent/CN204662521U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106995173A (en) * | 2016-01-22 | 2017-08-01 | 株式会社日立制作所 | The restored method of restraint device, the elevator for possessing restraint device and restraint device |
| CN106995173B (en) * | 2016-01-22 | 2019-03-15 | 株式会社日立制作所 | The restored method of restraint device, the elevator for having restraint device and restraint device |
| CN109781324A (en) * | 2019-01-07 | 2019-05-21 | 中国石油天然气股份有限公司 | Pipeline Misses stress monitoring system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205003013U (en) | Split hopkinson pressure bar test piece strutting arrangement | |
| CN106289971B (en) | Experimental rig for the test of concrete filled steel tubular member tensile fatigue | |
| CN103628477B (en) | A kind of prestressing force charger for glass fiber-reinforced polymer anchor pole | |
| EA201170593A1 (en) | LIFTING DEVICE AND METHOD OF LIFTING CONCRETE ELEMENTS | |
| CN110426344A (en) | A kind of self-balancing type reinforcing bar and concrete binding sliding test device and test method | |
| CN204781023U (en) | Experimental counter -force device is drawn to side slope stock | |
| CN204662521U (en) | Damping type pre-tensioning device for joint meter | |
| CN107677596B (en) | The method of indoor test rock and concrete binding interface tensile strength | |
| CN204781970U (en) | Template fixing device with adjustable | |
| CN204238570U (en) | The spiral adjuster of absolute altitude of frame ball node is installed | |
| CN107807039A (en) | Lever long duration load tests loading frame | |
| CN203957079U (en) | A kind of Novel wall building bricks die | |
| Bhonde et al. | Experimental investigation of bamboo reinforced concrete slab | |
| CN204081475U (en) | A kind of adjustable floor one-piece keel structure | |
| CN204023791U (en) | Embedding anchor bolts device | |
| CN204113316U (en) | A kind of interval screw rod body formula large deformation anchor rod | |
| CN204758266U (en) | U type inslot, external pressure strength detection device | |
| CN203654279U (en) | Prestressing force loading device for glass fiber rib anchor rod | |
| CN204299205U (en) | The pre-applied force equipment in reinforcing wall crack | |
| CN103698148B (en) | Surface deformation resistance experimental method for self-balance portal | |
| CN203795854U (en) | Preformed hole formwork fixing device for bare concrete floor | |
| CN207700179U (en) | A kind of spliced mixed mud stake | |
| CN203008363U (en) | Device for fixing root part of outer wall template | |
| CN204903449U (en) | Bending load loading device for concrete alkali aggregate reaction test piece | |
| CN204475872U (en) | Pre-stressed carbon fiber plate tensioning equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |