CN213455385U

CN213455385U - Vibrating wire type surface strain gauge with quick mounting mechanism

Info

Publication number: CN213455385U
Application number: CN202022529682.9U
Authority: CN
Inventors: 王瑞国; 王孝红; 曲相儒; 张锋; 任沐阳泽
Original assignee: CCCC First Highway Consultants Co Ltd
Current assignee: CCCC First Highway Consultants Co Ltd
Priority date: 2020-11-05
Filing date: 2020-11-05
Publication date: 2021-06-15
Anticipated expiration: 2030-11-05

Abstract

The utility model relates to a vibrating wire formula surface strain meter with quick installation mechanism, including vibrating wire formula surface strain meter main part, coil, vibration pickup steel string and strain protection pipe, the inside of vibrating wire formula surface strain meter main part is provided with data transmission device, the upside fixed mounting of coil has the vibration pickup, one side fixed connection data line of vibration pickup, the left side of vibrating wire formula surface strain meter main part is provided with first stiff end, first stiff end internally mounted has the pressure spring, the second base is installed to the downside of first stiff end, the pressure spring is installed in the left side of second base, pressure spring and flexible fixed head fixed connection, first stiff end passes through second base and stiff end support fixed connection. The utility model provides high strainometer life has strengthened strainometer long-term stability to the rotary bolt height-adjustable that the device bottom set up makes the strainometer more accurate at the in-process of installation.

Description

Vibrating wire type surface strain gauge with quick mounting mechanism

Technical Field

The utility model discloses surface stress meter field specifically is a vibrating wire formula surface strain meter with quick installation mechanism.

Background

In order to ensure the quality and safety of bridge engineering in China, a load test needs to be carried out on a bridge before the bridge is put into operation, and because the vibrating wire type surface strain gauge has the advantages of stable reading, high measurement precision and reusability, the vibrating wire type surface strain gauge becomes an indispensable test instrument in the load test.

For concrete bridge structure, use bonding glue in the twinkling of an eye usually and glue the surface strain gauge to the concrete surface, take off it after experimental completion, prepare for next use, because glue adhesion is big, thereby lead to the surface stress meter to damage behind the take off device usually and follow-up experiment just can't reuse, or bolted connection commonly used leads to the installation too slow, and unable height angle of regulation, also lead to the phenomenon of damage because of its self meticulous reason in the transportation to the surface stress meter.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a vibrating wire formula surface strain meter with quick installation mechanism to solve the surface stress meter tradition gluing mode of proposing in the above-mentioned background and be difficult for taking off, bolted connection is difficult for installing or the problem of unable height-adjusting angle.

In order to achieve the above object, the utility model provides a following technical scheme: including vibrating string formula surface strain gauge main part, coil, vibration pickup steel string and strain protection pipe, the inside of vibrating string formula surface strain gauge main part is provided with data transmission device, the upside fixed mounting of coil has the vibration pickup, one side fixed connection data line of vibration pickup, the left side of vibrating string formula surface strain gauge main part is provided with first stiff end, first stiff end internally mounted has the pressure spring, the second base is installed to the downside of first stiff end, the pressure spring is installed in the left side of second base, pressure spring and flexible fixed head fixed connection, first stiff end passes through second base and stiff end support fixed connection, the downside of stiff end support is provided with first base, one side of first base is inserted and is equipped with regulation formula bolt, the bottom of regulation formula bolt is installed the adjusting screw, rotatory buckle has been put to the outside cover of regulation formula bolt, and a fixing rod is arranged on one side of the adjusting bolt.

Preferably, the inner side of the strain protection tube is provided with a steel string, the left side of the strain protection tube is fixedly connected with the first fixed end, and the right side of the strain protection tube is fixedly connected with the second fixed end.

Preferably, a vibration pickup is arranged in the data transmission device, the vibration pickup is fixedly connected with the coil through a conducting wire, and a data wire is inserted outside the data transmission device.

Preferably, the regulation formula bolt includes dead lever, rotatory buckle, adjusting screw and bolt gasket, adjusting screw's top is provided with the bolt gasket rotatory buckle is installed in the outside of regulation formula bolt, rotatory buckle passes through dead lever and regulation formula bolt fixed connection.

Preferably, one end of the pressure spring is inserted into the telescopic fixing head, a second base is welded on one side of the pressure spring, four groups of threaded holes are formed in the outer side of the second base, and the threaded holes are fixedly connected with the fixing end support through screws.

Preferably, the adjusting bolts are arranged at the bottom of the first fixing end and the bottom of the second fixing end and are provided with four groups.

Compared with the prior art, the beneficial effects of the utility model are that: the vibration string type surface strain gauge of the quick mounting mechanism is internally provided with the vibration pickup and the coil, so that the building can be detected with high precision, the fixed end of the vibration string type surface strain gauge is internally provided with the pressure spring, the restoring force generated by the spring when the vibration string type surface strain gauge is subjected to acting force is opposite to the tensioning force direction of a vibrating string, the steel string is limited to be artificially twisted, the service life of the strain gauge is prolonged, the long-term stability of the strain gauge is enhanced, and the height of a rotating bolt arranged at the bottom of the device can be adjusted, so that the strain gauge is more accurate.

(1) The first fixed end is internally provided with a pressure spring which is connected with a steel string, and when the vibrating string type surface strain gauge is subjected to acting force in the transportation or installation process, the restoring force generated by the spring is opposite to the tensioning force direction of the vibrating string, so that the vibrating string is protected, and the stability is enhanced.

(2) Because the steel string is a sensitive and fragile part, the steel string and the vibration pickup are separated from each other left and right, and fixed ends are arranged at two ends of the steel string, so that the stability of the strain gauge is improved.

(3) The adjustable support bolt installed at the bottom of the vibrating string type surface strain gauge solves the problems that the surface strain gauge is easily damaged and is not easy to install due to the traditional installation method of the strain gauge, and the adjustable bolt solves the problem that the accuracy of the whole device is not uniform in height of the installation surface, so that errors occur.

Drawings

FIG. 1 is a schematic view of the structure of the vibrating wire surface strain gauge of the present invention;

FIG. 2 is a schematic diagram of the top view of the vibrating wire surface strain gauge of the present invention;

FIG. 3 is a schematic view of a first fixed end pressure spring structure of the vibrating wire surface strain gauge of the present invention;

fig. 4 is a schematic view of the structure of the adjustable bolt of the vibrating wire surface strain gauge of the present invention.

In the figure: 1. a vibrating wire surface strain gauge body; 2. a coil; 3. a vibration pickup; 4. a data line; 5. steel wire; 6. a first fixed end; 7. a fixed end support; 8. an adjustable bolt; 81. fixing the rod; 82. rotating the buckle; 83. adjusting screws; 84. a bolt washer; 9. a strain protection tube; 10. a second fixed end; 11. a first base; 12. a telescopic fixed head; 13. a pressure spring; 14. a second base; 15. a threaded hole; 16. a data transmission device; 17. and (4) conducting wires.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides an embodiment:

a vibrating string type surface strain gauge with a quick mounting mechanism comprises a vibrating string type surface strain gauge main body 1, a coil 2, a vibration pickup 3, a steel string 5 and a strain protection tube 9, wherein a data transmission device 16 is arranged in the vibrating string type surface strain gauge main body 1, the vibration pickup 3 is arranged in the data transmission device 16, the vibration pickup 3 is fixedly connected with the coil 2 through a lead 17, a data wire 4 is inserted outside the data transmission device 16, the vibration pickup 3 is fixedly mounted on the upper side of the coil 2, one side of the vibration pickup 3 is fixedly connected with the data wire 4, the steel string 5 is arranged on the inner side of the strain protection tube 9, the left side of the strain protection tube 9 is fixedly connected with a first fixed end 6, the right side of the strain protection tube 9 is fixedly connected with a second fixed end 10, the left side of the vibrating string type surface strain gauge main body 1 is provided with the first fixed end 6, a second base 14 is arranged at the lower side of the first fixed end 6, one end of a pressure spring 13 is inserted on the telescopic fixed head 12, a second base 14 is welded at one side of the pressure spring 13, four groups of threaded holes 15 are arranged at the outer side of the second base 14, the threaded holes 15 are fixedly connected with the fixed end support 7 through screws, the pressure spring 13 is arranged at the left side of the second base 14, a first base 11 is arranged at the lower side of the fixed end support 7, an adjusting bolt 8 is inserted at one side of the first base 11, the adjusting bolt 8 comprises a fixed rod 81, a rotary buckle 82, an adjusting screw 83 and a bolt washer 84, the top of the adjusting screw 83 is provided with the bolt washer 84, the rotary buckle 82 is arranged at the outer side of the adjusting bolt 8, the rotary buckle 82 is fixedly connected with the adjusting bolt 8 through the fixed rod 81, the bottom of the adjusting bolt 8 is provided, and accessible adjusting screw 83 fixes adjustable bolt 8, and the height of adjustable bolt 8 is adjusted in the regulation of accessible adjusting screw 83, rotatory buckle 82 has been set up to adjustable bolt 8's outside cover, one side of adjustable bolt 8 is provided with dead lever 81, the inboard of adjustable bolt 8 is provided with the internal thread, through the internal thread that dead lever 81 and adjustable bolt 8 inboard set up, can adjust fixedly the device height of rotatory buckle 82, adjustable bolt 8 sets up the bottom at first stiff end 6 and second stiff end 10, adjustable bolt 8 is provided with four groups.

The working principle is as follows: this vibrating wire formula surface strain gauge is provided with data transmission device 16, data transmission device 16 internally mounted has vibration pickup 3 and coil 2, data transmission passes through wire 17 between vibration pickup 3 and the coil 2, and the externally mounted of vibration pickup 3 has data line 4, can handle and look up data through data line 4, both ends carry out fixed mounting with first stiff end 6 and second stiff end 10 respectively about data transmission device 16, the aggregate design of terminal of working a telephone switchboard, can give convenience for the field operation of testing personnel, can realize the transmission and the collection of data directly in being connected to the wiring jack that the collection box was drawn forth with the plug.

The first fixed end 6 is internally provided with a telescopic fixed head 12, the telescopic fixed head 12 is fixedly connected with a pressure spring 13, when the vibrating wire type surface strain gauge main body 1 of the vibrating wire type surface strain gauge is subjected to acting force in the transportation or installation process through the buffering of the pressure spring 13, the restoring force generated by the spring is opposite to the tensioning force direction of a vibrating wire, so as to protect the vibrating wire, the bottom of the telescopic fixed head 12 can be fixedly connected with a fixed end support 7 through a threaded hole 15 on a second base 14, the fixed end support 7 is fixedly connected with a first base 11, an adjusting bolt 8 is fixedly arranged on the first base 11, the adjusting bolt 8 is provided with a fixed rod 81 and a rotating buckle 82, the first base 11 can be adjusted at different heights through the rotating buckle 82, and an adjusting screw 83 can adjust the height of the adjusting bolt 8, so that the installation of the vibrating wire type surface strain gauge main body 1 is attached to an installation surface, can make the installation of vibration wire formula surface strain gauge main part 1 quick and practical through the regulation formula bolt 8 that sets up, bolt gasket 84 is installed to adjusting screw 83 upper end, bolt gasket 84 can fasten first base 11 more, adjusting screw 83 can fasten the effect to the surface of installation, regulation formula bolt 8 is provided with four groups, can increase the stability of vibration wire formula surface strain gauge main part 1 and increase adjusting screw 83 and to the fixed of installation face when carrying out quick installation to vibration wire formula surface strain gauge main part 1.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a vibration wire formula surface strain gauge with quick installation mechanism, includes vibration wire formula surface strain gauge main part (1), coil (2), vibration pickup (3) steel string (5) and strain protection pipe (9), its characterized in that: the inside of string formula surface strain gauge main part (1) shakes is provided with data transmission device (16), the upside fixed mounting of coil (2) has vibration pickup (3), one side fixed connection data line (4) of vibration pickup (3), the left side of string formula surface strain gauge main part (1) shakes is provided with first stiff end (6), first stiff end (6) internally mounted has pressure spring (13), second base (14) are installed to the downside of first stiff end (6), pressure spring (13) are installed in the left side of second base (14), pressure spring (13) and flexible fixed head (12) fixed connection, first stiff end (6) are through second base (14) and stiff end support (7) fixed connection, the downside of stiff end support (7) is provided with first base (11), first base (11) one side is inserted and is equipped with regulation formula bolt (8), adjusting screws (83) are installed at the bottom of the adjusting type bolt (8), a rotary buckle (82) is sleeved on the outer side of the adjusting type bolt (8), and a fixing rod (81) is arranged on one side of the adjusting type bolt (8).

2. The vibrating wire surface strain gauge with a quick-mount mechanism of claim 1, wherein: the inboard of strain protection pipe (9) is provided with chord (5), the left side and first stiff end (6) fixed connection of strain protection pipe (9), the right side and second stiff end (10) fixed connection of strain protection pipe (9).

3. The vibrating wire surface strain gauge with a quick-mount mechanism of claim 1, wherein: a vibration pickup (3) is arranged in the data transmission device (16), the vibration pickup (3) is fixedly connected with the coil (2) through a lead (17), and a data line (4) is inserted in the outer side of the data transmission device (16).

4. The vibrating wire surface strain gauge with a quick-mount mechanism of claim 1, wherein: adjust formula bolt (8) and include dead lever (81), rotatory buckle (82), adjusting screw (83) and bolt gasket (84), the top of adjusting screw (83) is provided with bolt gasket (84) rotatory buckle (82) are installed in the outside of adjusting formula bolt (8), rotatory buckle (82) are through dead lever (81) and regulation formula bolt (8) fixed connection.

5. The vibrating wire surface strain gauge with a quick-mount mechanism of claim 1, wherein: one end of the pressure spring (13) is inserted into the telescopic fixing head (12), a second base (14) is welded on one side of the pressure spring (13), four groups of threaded holes (15) are formed in the outer side of the second base (14), and the threaded holes (15) are fixedly connected with the fixing end support (7) through screws.

6. The vibrating wire surface strain gauge with a quick-mount mechanism of claim 1, wherein: the adjustable bolt (8) is arranged at the bottom of the first fixed end (6) and the bottom of the second fixed end (10), and four groups of adjustable bolts (8) are arranged.