CN205352348U - Bolted connection formula absciss layer displacement tester push rod - Google Patents
Bolted connection formula absciss layer displacement tester push rod Download PDFInfo
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- CN205352348U CN205352348U CN201620080784.8U CN201620080784U CN205352348U CN 205352348 U CN205352348 U CN 205352348U CN 201620080784 U CN201620080784 U CN 201620080784U CN 205352348 U CN205352348 U CN 205352348U
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- push rod
- rod
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- connecting portion
- displacement tester
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Abstract
The utility model belongs to the technical field of rock mass mechanics parameter measurement, in particular to bolted connection formula absciss layer displacement tester push rod. Absciss layer displacement tester push rod includes that the combination of the many push rod bodies of rod and scale mark forms, and push rod body of rod one end is provided with connecting portion, and threaded hole is opened to the connecting portion outer wall, and threaded hole is also opened to the other end outer wall of the push rod body of rod, all adopt the connected mode of installing fastening bolt to carry out end to end between each push rod body of rod and make up into absciss layer displacement tester push rod. The push rod body of rod is hollow body of rod structure, and its surface is equipped with the scale mark to scribble the antirust coat. The connecting portion external diameter of the push rod body of rod is less than push rod body of rod internal diameter, and connecting portion external diameter and push rod body of rod internal diameter phase -match, this kind of push rod are not only stable to multistage push rod firm in connection, and the push rod that the erection joint is good fast moreover carries out absciss layer displacement basic point and measures.
Description
Technical field
This utility model belongs to Mechanics Parameters of Rock Mass field of measuring technique, particularly to a kind of bolt connecting type bed separation displacement tester push rod.
Background technology
Tunnel is as the important transport channel in down-hole and work space, and its stability state directly influences the life security of the properly functioning of shaft production and workman.At present in underground engineering, original stress equilibrium state due to driving action breaks down, cause inside country rock displacement to a certain extent, deformation.Wherein country rock roof movement has disguise, destroys the features such as sudden, the extensive property of inbreak of unstability.Therefore the reasonable monitoring of roadway roof displacement, to differentiating that whether Bolting Parameters is reasonable, whether tunnel is in steady statue during use, it is significant to understand the engineering problem such as position, top board overlying rock crack.
Adopt of monitoring of top board displacement is obtained by the relative displacement measuring between basic point by current tunnel, mine, underground engineering etc. more, namely first punch in back rock stratum, then by push rod, measurement basic point or magnet ring are delivered in boring, obtain the basic point of different measuring time or magnet ring from orifice distance by corresponding equipment, obtain the top board displacement of this measurement time period with this.It is threaded that the many employings of connected mode of push rod used by basic point are measured in existing installation, although threaded have advantages such as being connected firmly, but is threaded connection many push rods owing to scene generally requires, and so causes push rod gross weight quantitative change big.On the other hand, lane space has dirt unavoidably, easy to stick in connecting thread surface；Especially after repeatedly using, the push rod deformation reason such as more serious, directly contribute tightening and dismantling very difficult of push rod, have a strong impact on measurement basic point installation effectiveness.Therefore, need a kind of bed separation displacement of installing efficiently and effectively badly and measure the connection erecting device of push rod used by basic point.
Summary of the invention
The purpose of this utility model is in that for the deficiencies in the prior art, it is provided that a kind of bolt connecting type bed separation displacement tester push rod, and this kind of push rod can not only connect in firm stable combination, and can carry out bed separation displacement basic point measurement by the push rod that connects of Fast Installation.
Bolt connecting type bed separation displacement tester push rod described in the utility model, combine including the many push rod bodies of rod and scale mark, each push rod body of rod one end is provided with connecting portion, and connecting portion outer wall has screwed hole, and the other end outer wall of each push rod body of rod also has screwed hole；The connected mode all adopting installation fastening bolt between above-mentioned each push rod body of rod carries out joining end to end and is combined into bed separation displacement tester push rod.
In technique scheme, the connecting portion external diameter of the described push rod body of rod is less than footpath in push rod body.
In technique scheme, described push rod body of rod connecting portion external diameter matches with footpath in push rod body, and the two gap is 0.2～0.3.
In technique scheme, the described push rod body of rod is the bar structure of hollow, and its surface is provided with scale mark, and scribbles antirust coat.
A kind of bolt connecting type bed separation displacement tester push rod described in the utility model, can according to basic point to be measured at the height within country rock, the many push rod bodies of rod are joined end to end connect that to be combined as bed separation displacement tester push rod overall by fastening bolted mode, thus can realize the measurement of differing heights bed separation displacement basic point in underground engineering.
The Advantageous Effects that this utility model has is:
1, push rod described in the utility model ties connect owing to the connected mode between the push rod body of rod have employed fastening screw, solve conventional push rod adopt threaded be difficult to tighten fixing with dismounting etc. problem；The operating process of this connected mode is simple, and improves the efficiency and degree of accuracy of measuring basic point installation.
2, push rod described in the utility model scribbles antirust coat due to push rod surface, therefore improves the service life of this tester push rod.
Accompanying drawing explanation
Fig. 1 is that bolt connecting type bed separation displacement tester push rod fastening screw described in the utility model ties and connects partial sectional view；
Fig. 2 is bolt connecting type bed separation displacement tester pusher structure schematic diagram described in the utility model；
Fig. 3 is the sectional view that the tester push rod of bolt connecting type bed separation displacement described in Fig. 1 is provided with connecting portion one end；
Fig. 4 is the tester push rod other end sectional view of bolt connecting type bed separation displacement described in Fig. 1.
In figure, the 1 push rod body of rod, the 11 first push rod body of rod, the 12 second push rod body of rod, 2 connecting portions, 3 screwed holes, 4 scale marks, 5 fastening bolts.
Detailed description of the invention
Below in conjunction with accompanying drawing and by specific embodiment, bed separation displacement tester push rod described in the utility model is described in further detail.
Embodiment 1:
Bolt connecting type bed separation displacement tester push rod described in the utility model, its connected mode is as shown in Figure 1, this figure is that two push rods are connected, combine including the first push rod body of rod 11 and the second push rod body of rod 12, the end of the above-mentioned first push rod body of rod 11 one end is provided with connecting portion 2, connecting portion 2 outer wall has the screwed hole 3 for installing fastening bolt 5, and the tail end outer wall of the second push rod body of rod 12 also has the screwed hole 3 for installing fastening bolt 5；Connecting portion 2 external diameter of the described first push rod body of rod 11 matches less than the internal diameter of the second push rod body of rod 12 tail end, the first push rod body of rod 11 connecting portion 2 external diameter and the second push rod body of rod 12 internal diameter, and the two gap is 0.2；The tail end grafting combination of the above-mentioned first push rod body of rod 11 connecting portion 2 and the second push rod body of rod 12, the the first push rod body of rod 11 connecting portion 2 and the second push rod body of rod 12 tail end is adjusted after combination, when the screwed hole of the first push rod body of rod 11 connecting portion 2 and the second push rod body of rod 12 tail end screwed hole are in same center, use fastening bolt 5 that the two push rod bodies of rod are connected as an entirety, be combined as bolt connecting type bed separation displacement tester push rod.
The above-mentioned first push rod body of rod 11, the second push rod body of rod 12 is the bar structure of hollow, and surface is provided with scale mark 4, and scribbles antirust coat so that it is durable in use.
First punch in back rock stratum when in the present embodiment, bolt connecting type bed separation displacement tester push rod uses, then pass through push rod and measurement basic point is delivered in boring, according to different time of the measuring record basic point different distance from aperture, obtain the displacement of back in time period with this.
Embodiment 2:
Another kind of embodiment part unlike the embodiments above of the present utility model is in that, bed separation displacement tester push rod is combined by three sections of push rod bodies of rod 1, and the gap that the external diameter of the push rod body of rod 1 connecting portion 2 and the push rod body of rod 1 internal diameter match is 0.3.
The present embodiment is except above-mentioned difference, and other structures are all identical with embodiment 1 with realization.
Especially needed explanation, this utility model differing heights according to basic point to be measured, many push rod combinations can be connected the appointment position delivering to basic point to be measured in hole, thus carrying out the measurement of bed separation displacement basic point.
Claims (4)
1. a bolt connecting type bed separation displacement tester push rod, combine including the many push rod bodies of rod (1) and scale mark (4), it is characterized in that each push rod body of rod (1) one end is provided with connecting portion (2), connecting portion (2) outer wall has screwed hole (3), and the other end outer wall of each push rod body of rod (1) also has screwed hole (3)；The connected mode installing fastening bolt (5) is all adopted to carry out joining end to end and be combined into bed separation displacement tester push rod between described each push rod body of rod (1).
2. a kind of bolt connecting type bed separation displacement tester push rod according to claim 1, it is characterised in that connecting portion (2) external diameter of the described push rod body of rod (1) is less than the internal diameter of the push rod body of rod (1).
3. a kind of bolt connecting type bed separation displacement tester push rod according to claim 2, it is characterized in that the connecting portion of the push rod body of rod (1) (2) external diameter and the push rod body of rod (1) internal diameter match, gap both it is 0.2～0.3.
4. a kind of bolt connecting type bed separation displacement tester push rod according to claim 1 or 3, it is characterised in that the bar structure that the described push rod body of rod (1) is hollow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620080784.8U CN205352348U (en) | 2016-01-27 | 2016-01-27 | Bolted connection formula absciss layer displacement tester push rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620080784.8U CN205352348U (en) | 2016-01-27 | 2016-01-27 | Bolted connection formula absciss layer displacement tester push rod |
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| Publication Number | Publication Date |
|---|---|
| CN205352348U true CN205352348U (en) | 2016-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620080784.8U Active CN205352348U (en) | 2016-01-27 | 2016-01-27 | Bolted connection formula absciss layer displacement tester push rod |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983549A (en) * | 2021-03-09 | 2021-06-18 | 中国矿业大学 | Overburden mining abscission layer dynamic development monitoring method |
-
2016
- 2016-01-27 CN CN201620080784.8U patent/CN205352348U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983549A (en) * | 2021-03-09 | 2021-06-18 | 中国矿业大学 | Overburden mining abscission layer dynamic development monitoring method |
| CN112983549B (en) * | 2021-03-09 | 2021-10-26 | 中国矿业大学 | Overburden mining abscission layer dynamic development monitoring method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |