CN203266542U - Tensioning device for down-hole geostress measuring cable - Google Patents
Tensioning device for down-hole geostress measuring cable Download PDFInfo
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- CN203266542U CN203266542U CN 201320159393 CN201320159393U CN203266542U CN 203266542 U CN203266542 U CN 203266542U CN 201320159393 CN201320159393 CN 201320159393 CN 201320159393 U CN201320159393 U CN 201320159393U CN 203266542 U CN203266542 U CN 203266542U
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Abstract
The utility model relates to a tensioning device for a down-hole geostress measuring cable, which comprises a first lock, a first pin, a second lock, a second pin, long bolts, a movable part, springs, a fixed part, an extension rod, a limiting bolt, a support rod and a base, wherein the support rod is mounted on the base; the extension rod is clamped in the support rod by the limiting bolt; the fixed part is connected with the extension rod; the first lock is mounted on the fixed part; the first pin is mounted on the fixed part; the movable part is connected with the fixed part by the long bolts, and can move along the long bolts; the long bolts are sleeved with the springs; the second lock is mounted on the movable part; and the second pin is mounted on the movable part. The tensioning device has the advantages that the geostress measuring cable can be tensioned automatically, so that a potential safety hazard caused by manual tensioning of the cable is avoided; in addition, a more stable tensioning force can be provided, so that the defect that the tensioning force is unstable in manual tensioning is overcome; and the tensioning device can achieve a relatively constant tensioning degree, and is simple in structure, simple and convenient to mount and low in production cost.
Description
Technical field
The utility model relates to the geostress survey device, particularly a kind of tensioning apparatus for down-hole geostress survey cable.
Background technology
Stress state in mining, hydroelectric project, subterranean tunnel, oil gas field and the fields such as geothermal energy development, the construction of nuclear power station all need specifically to grasp subterranean body.Geostress survey is the most effective and direct method of descending definitely the rock mass stress state.
Hollow inclusion earth stress measuring method belongs to stress relief method.The method is first beaten the measurement aperture in the place of measuring crustal stress, and measuring cell is arranged on predetermined depth location, and then the register instrument reading bores a macropore concentric with aperture, and this process is called the stress relieving of cover core.In stress relieving groove digging process, the elasticity recovery occurs in the effect that has broken away from crustal stress due to core, and corresponding strain and distortion occur in boring, and instrument readings is also ensued variation.Utilize strain and the distortion of boring, according to the formula of deriving with elastic theory, calculate the size and Orientation of crustal stress.The element of monitor strain comprises stressometer and deformeter, and the former is placed in boring, and the latter is placed in outside the hole, is connected by cable between both, and cable length is generally 15m～20m.Cable need to pass from drilling rod and drill bit internal.In stress relieving groove digging process, along with the rotation of drilling tool, cable can produce certain lax, and then will rotate together with drilling rod, and the two ends of cable are fixing, therefore will be wound around, final fracture.In order to prevent that cable from rotating together with drilling tool, need in traditional measurement manually at the drilling rod afterbody the cable tensioning, when creeping into middle generation drilling rod bit freezing or part drilling rod when coming off, easily the people is caused injury, produce industrial accident.
The utility model content
The purpose of this utility model is to solve the security hidden trouble that artificial tensioning geostress survey cable brings, and the spy provides a kind of tensioning apparatus for down-hole geostress survey cable.
The utility model provides a kind of tensioning apparatus for down-hole geostress survey cable, it is characterized in that: described tensioning apparatus for down-hole geostress survey cable comprises, lock 1, sell 1, lock 23, pin 24, stay bolt 5, movable part 6, spring 7, standing part 8, extension rod 9, caging bolt 10, support bar 11, base 12;
Wherein: support bar 11 is arranged on base 12, extension rod 9 is clamped in support bar 11 by caging bolt 10, standing part 8 is connected with extension rod 9, lock 1 and be arranged on standing part 8, pin 1 is arranged on standing part 8, and movable part 6 is connected by stay bolt 5 with standing part 8, movable part 6 can move along stay bolt 5, spring 7 is enclosed within on stay bolt 5, and lock 23 is arranged on movable part 6, and pin 24 is arranged on movable part 6.
Described stay bolt 5 is 2～4.
Described standing part 8 is the two-piece unit structure with through hole, and a side of Split type structure connects by pin 1, and the opposite side of Split type structure is by lock one 1 lockings.
Described movable part 6 is the two-piece unit structure with through hole, and a side of Split type structure connects by pin 24, and the opposite side of Split type structure is by lock 23 lockings.
The tensioning apparatus for down-hole geostress survey cable described in the utility model is installed in the position of the about 1m that passes from the drilling rod afterbody at the crustal stress test cable, cable is passed from the front-end and back-end of tensioning apparatus, front end is attached cable not, the rear end attached cable, during adjusting bolt length, cable keeps certain rate of tension, and cable can be realized auto-tensioning in the process of geostress survey.
Advantage of the present utility model:
Tensioning apparatus for down-hole geostress survey cable described in the utility model, can make geostress survey cable auto-tensioning, avoid the potential safety hazard of artificial tensioning cable, more stable tensile force can be provided, overcome the unsettled drawback of tensile force in artificial tensioning, can also realize that rate of tension is relatively constant, simple in structure, simple installation, production cost is low, and practicality is extensive.
Description of drawings
Below in conjunction with drawings and the embodiments, the utility model is described in further detail:
Fig. 1 is the schematic diagram of down-hole geostress survey cable automatic takeup.
The specific embodiment
Embodiment 1
The present embodiment provides a kind of tensioning apparatus for down-hole geostress survey cable, it is characterized in that: described tensioning apparatus for down-hole geostress survey cable comprises, lock 1, sell 1, lock 23, pin 24, stay bolt 5, movable part 6, spring 7, standing part 8, extension rod 9, caging bolt 10, support bar 11, base 12;
Wherein: support bar 11 is arranged on base 12, extension rod 9 is clamped in support bar 11 by caging bolt 10, standing part 8 is connected with extension rod 9, lock 1 and be arranged on standing part 8, pin 1 is arranged on standing part 8, and movable part 6 is connected by stay bolt 5 with standing part 8, movable part 6 can move along stay bolt 5, spring 7 is enclosed within on stay bolt 5, and lock 23 is arranged on movable part 6, and pin 24 is arranged on movable part 6.
Described stay bolt 5 is 2.
Described standing part 8 is the two-piece unit structure with through hole, and a side of Split type structure connects by pin 1, and the opposite side of Split type structure is by lock one 1 lockings.
Described movable part 6 is the two-piece unit structure with through hole, and a side of Split type structure connects by pin 24, and the opposite side of Split type structure is by lock 23 lockings.
The tensioning apparatus for down-hole geostress survey cable described in the utility model is installed in the position of the about 1m that passes from the drilling rod afterbody at the crustal stress test cable, cable is passed from the front-end and back-end of tensioning apparatus, front end is attached cable not, the rear end attached cable, during adjusting bolt length, cable keeps certain rate of tension, and cable can be realized auto-tensioning in the process of geostress survey.
Embodiment 2
The overall structure of the present embodiment and embodiment 1 is similar, and the difference part is that described stay bolt 5 is 4.
Embodiment 3
The overall structure of the present embodiment and embodiment 1 is similar, and the difference part is that described stay bolt 5 is 3.
Claims (4)
1. tensioning apparatus that is used for down-hole geostress survey cable, it is characterized in that: described tensioning apparatus for down-hole geostress survey cable comprises, lock one (1), pin one (2), lock two (3), pin two (4), stay bolt (5), movable part (6), spring (7), standing part (8), extension rod (9), caging bolt (10), support bar (11), base (12);
wherein: support bar (11) is arranged on base (12), extension rod (9) is clamped in support bar (11) by caging bolt (10), standing part (8) is connected with extension rod (9), lock one (1) is arranged on standing part (8), pin one (2) is arranged on standing part (8), movable part (6) is connected by stay bolt (5) with standing part (8), movable part (6) can be mobile along stay bolt (5), spring (7) is enclosed within on stay bolt (5), lock two (3) is arranged on movable part (6), pin two (4) is arranged on movable part (6).
2. according to the tensioning apparatus for down-hole geostress survey cable claimed in claim 1, it is characterized in that: described stay bolt (5) is 2～4.
3. according to the tensioning apparatus for down-hole geostress survey cable claimed in claim 1, it is characterized in that: described standing part (8) is the two-piece unit structure with through hole, one side of Split type structure connects by pin one (2), and the opposite side of Split type structure is by lock one (1) locking.
4. according to the tensioning apparatus for down-hole geostress survey cable claimed in claim 1, it is characterized in that: described movable part (6) is the two-piece unit structure with through hole, one side of Split type structure connects by pin two (4), and the opposite side of Split type structure is by lock two (3) lockings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320159393 CN203266542U (en) | 2013-04-02 | 2013-04-02 | Tensioning device for down-hole geostress measuring cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320159393 CN203266542U (en) | 2013-04-02 | 2013-04-02 | Tensioning device for down-hole geostress measuring cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203266542U true CN203266542U (en) | 2013-11-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320159393 Expired - Fee Related CN203266542U (en) | 2013-04-02 | 2013-04-02 | Tensioning device for down-hole geostress measuring cable |
Country Status (1)
| Country | Link |
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| CN (1) | CN203266542U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104942743A (en) * | 2015-06-28 | 2015-09-30 | 浙江康盈磁业有限公司 | Tensioning device and tensioning method |
-
2013
- 2013-04-02 CN CN 201320159393 patent/CN203266542U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104942743A (en) * | 2015-06-28 | 2015-09-30 | 浙江康盈磁业有限公司 | Tensioning device and tensioning method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20140402 |