CN108955971B - Auxiliary device of bridge effective prestress detector - Google Patents
Auxiliary device of bridge effective prestress detector Download PDFInfo
- Publication number
- CN108955971B CN108955971B CN201810971878.8A CN201810971878A CN108955971B CN 108955971 B CN108955971 B CN 108955971B CN 201810971878 A CN201810971878 A CN 201810971878A CN 108955971 B CN108955971 B CN 108955971B
- Authority
- CN
- China
- Prior art keywords
- displacement sensor
- fixed
- hole
- connecting rod
- protection sleeve
- 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
- 238000006073 displacement reaction Methods 0.000 claims abstract description 154
- 238000000034 method Methods 0.000 claims abstract description 13
- 230000001681 protective effect Effects 0.000 claims abstract description 10
- 230000008569 process Effects 0.000 claims abstract description 9
- 210000000078 claw Anatomy 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 238000003466 welding Methods 0.000 abstract description 3
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/26—Auxiliary measures taken, or devices used, in connection with the measurement of force, e.g. for preventing influence of transverse components of force, for preventing overload
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention provides an auxiliary device of an effective prestress detector for a bridge, which comprises a displacement sensor tool and a front clamping type jack; the displacement sensor tool comprises a linear displacement sensor, a displacement sensor fixing part assembly, an outer protection sleeve, an inner protection sleeve, a displacement sensor telescopic part assembly, a displacement limiting plate, a first holding ring and a second holding ring. The advantages are that: (1) The linear displacement sensor 101 and the aviation plug 1026 are assembled together, and then sleeved into the outer protective sleeve for protection, so that the wiring between the linear displacement sensor 101 and the aviation plug 1026 can be protected from being broken. (2) The design of the connecting nut 1051 enables the linear displacement sensor 101, the inner protection sleeve 104 and the displacement limiting plate 106 to be connected, so that the linear displacement sensor 101 can move along with the telescopic movement of the jack. (3) The whole device is assembled by adopting threaded connection, a welding procedure is not needed, and the assembly process is simple.
Description
Technical Field
The invention belongs to the technical field of effective prestress detection of bridges, and particularly relates to an auxiliary device of an effective prestress detector of a bridge.
Background
The bridge prestress tension detection work is an important ring for guaranteeing the bridge quality. At present, the bridge prestress tension detection site construction still mainly adopts methods of manual measurement, manual reading and manual control. The acquisition of the bridge prestress tensioning parameters is observed by human eyes, so that the precision of prestress tensioning is greatly affected by manpower.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides an auxiliary device for an effective prestress detector for a bridge, which can effectively solve the problems.
The technical scheme adopted by the invention is as follows:
the invention provides an auxiliary device of an effective prestress detector for a bridge, which comprises a displacement sensor tool (100) and a front clamping jack (200);
the front clamping type jack (200) comprises a fixed base (201) and a movable claw (202) which can stretch and retract relative to the fixed base (201); the surface of the fixed base (201) is provided with a first group of threaded holes (203) and a second group of threaded holes (204); the tail end of the movable claw (202) is provided with an arc-shaped groove (205);
the displacement sensor tool (100) comprises a linear displacement sensor (101), a displacement sensor fixing part assembly (102), an outer protection sleeve (103), an inner protection sleeve (104), a displacement sensor telescopic part assembly (105), a displacement limiting plate (106), a first holding ring (107) and a second holding ring (108);
one end of the linear displacement sensor (101) is provided with a fixed connecting rod (1011) and an acquisition cable (1012); the tail end of the fixed connecting rod (1011) is provided with external threads; the other end of the linear displacement sensor (101) is provided with a telescopic connecting rod (1013), and the tail end of the telescopic connecting rod (1013) is provided with external threads;
the displacement sensor fixing part assembly (102) comprises a clamping piece (1021), a first screw cap (1022), a second screw cap (1023), a first screw rod (1024), a second screw rod (1025) and an aviation plug (1026); the clamping piece (1021) is provided with four through holes, namely a first through hole (A1) positioned in the center, a second through hole (A2) positioned on the side surface of the first through hole (A1), a third through hole (A3) and a fourth through hole (A4) positioned on two opposite sides of the first through hole (A1); the first through hole (A1) of the clamping piece (1021) is sleeved on the fixed connecting rod (1011), and the first screw cap (1022) and the second screw cap (1023) are respectively arranged on two sides of the first through hole (A1), so that the clamping piece (1021) is fixed on the fixed connecting rod (1011); the tail end of the acquisition cable (1012) passes through the second through hole (A2) and is electrically connected with a positive terminal (C1) and a negative terminal (C1) of the aviation plug (1026); one end of the first screw rod (1024) is fixed with a third through hole (A3) of the clamping piece (1021) through a bolt, and the other end of the first screw rod (1024) is fixed with the aviation plug (1026) through a bolt; one end of the second screw rod (1025) is fixed with a fourth through hole (A4) of the clamping piece (1021) through a bolt, and the other end of the second screw rod (1025) is fixed with the aviation plug (1026) through a bolt, so that the aviation plug (1026) is fixed on the outer side of the clamping piece (1021);
in addition, the clamping piece (1021) and the aviation plug (1026) are provided with external threads on the outer periphery, the outer protection sleeve (103) is sleeved outside the linear displacement sensor (101), the outer protection sleeve (103) is provided with internal threads, and one end of the outer protection sleeve (103) is in threaded connection and fixation with the external threads of the clamping piece (1021) and the external threads of the aviation plug (1026) respectively;
the displacement sensor telescoping part assembly (105) comprises a connecting nut (1051); the outer end of the connecting nut (1051) is provided with a first internal threaded hole (B1), the inner end of the connecting nut (1051) is provided with a second internal threaded hole (B2), and the outer part of the inner end of the connecting nut (1051) is provided with an external thread (B3); the outer end of the inner protection sleeve (104) is provided with an internal thread; the inner protection sleeve (104) is sleeved outside the telescopic connecting rod (1013), and a second internal threaded hole (B2) of the connecting nut (1051) is in threaded connection and fixation with the external thread of the telescopic connecting rod (1013); then, the internal thread of the inner protection sleeve (104) is in threaded connection and fixation with the external thread (B3) of the connecting nut (1051), so that the connection and fixation of the inner protection sleeve (104) and the connecting nut (1051) are realized; the displacement limiting plate (106) is provided with an internal threaded hole, and the internal threaded hole of the displacement limiting plate (106) is fixedly connected with a first internal threaded hole (B1) of the connecting nut (1051) through a bolt;
the first holding ring (107) and the second holding ring (108) are fixedly arranged outside the outer protection sleeve (103);
the displacement limiting plate (106) is clamped on the arc-shaped groove (205) of the movable claw (202), and the first holding ring (107) is fixedly connected with the first group of threaded holes (203) of the fixed base (201) through bolts; the second holding ring (108) is fixedly connected with a second group of threaded holes (204) of the fixed base (201) through bolts; and the fixed end of the displacement sensor tool (100) is fixedly connected with the fixed base (201) of the front clamping jack (200), and the movable end of the displacement sensor tool (100) is fixedly connected with the movable claw (202) of the front clamping jack (200).
Preferably, the outer side of the aviation plug (1026) is provided with an aviation plug female (C2).
The auxiliary device of the bridge effective prestress detector provided by the invention has the following advantages:
(1) The structure is ingenious, and the purposes of fixing the linear displacement sensor, protecting the linear displacement sensor and accurately acquiring the displacement value are realized.
(2) The linear displacement sensor 101 and the aviation plug 1026 are assembled together, and then sleeved into the outer protective sleeve for protection, so that the wiring between the linear displacement sensor 101 and the aviation plug 1026 can be protected from being broken.
(3) The design of the connecting nut 1051 enables the linear displacement sensor 101, the inner protection sleeve 104 and the displacement limiting plate 106 to be connected, so that the linear displacement sensor 101 can move along with the telescopic movement of the jack.
(4) The whole device is assembled by adopting threaded connection, a welding procedure is not needed, and the assembly process is simple.
Drawings
FIG. 1 is a schematic structural diagram of a displacement sensor tool provided by the invention;
FIG. 2 is a schematic diagram of a linear displacement sensor;
FIG. 3 is a perspective view of the linear displacement sensor and clip after assembly;
FIG. 4 is a side view of the linear displacement sensor and clip after assembly;
FIG. 5 is a perspective view of the linear displacement sensor and clip after assembly on the front of the clip;
FIG. 6 is a perspective view of the linear displacement sensor and clip after assembly;
FIG. 7 is a perspective view of the clip;
FIG. 8 is a perspective view of the first nut;
FIG. 9 is a perspective view of a linear displacement sensor and displacement sensor attachment site assembly after assembly;
FIG. 10 is an enlarged view of a portion of an assembled linear displacement sensor and displacement sensor attachment site assembly;
FIG. 11 is a rear perspective view of an aerial plug;
FIG. 12 is a front perspective view of an aerial plug;
FIG. 13 is a perspective view of the first screw;
FIG. 14 is a perspective view of the outer protective sleeve;
FIG. 15 is a perspective view of the outer protective sleeve and displacement sensor attachment site assembly after assembly;
FIG. 16 is a perspective view of the displacement sensor telescoping section assembly and linear displacement sensor assembly;
FIG. 17 is a rear view of the coupling nut;
FIG. 18 is a front view of the coupling nut;
FIG. 19 is a perspective view of the inner protective sleeve;
FIG. 20 is a perspective view of the displacement limiting plate and the coupling nut assembled;
FIG. 21 is a side view of the displacement limiting plate and coupling nut after assembly;
fig. 22 is a structural view of the front truck jack.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects solved by the invention more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The invention provides an auxiliary device of an effective prestress detector for a bridge, which belongs to the technical field of nondestructive detection for the bridge, and is mainly designed as follows: the displacement sensor tool 100 and the front clamping jack 200 are assembled together, the telescopic part component of the displacement sensor tool 100 is fixed with the movable claw 202 of the front clamping jack 200, and the fixed part component of the displacement sensor tool 100 is fixed with the fixed end of the front clamping jack 200, so that when bridge prestress tensioning is carried out, on one hand, tension force is provided by the front clamping jack 200 and tensioning is carried out, and meanwhile, the tension elongation is measured by the displacement sensor tool 100, so that corresponding relation data of the tension elongation and the tension force are obtained, and an accurate detection result is obtained by analyzing the obtained data. Therefore, the bridge prestress tensioning construction is conveniently detected, the measurement accuracy of prestress tensioning is improved, and the potential safety hazard of the bridge is reduced.
Referring to fig. 1 to 22, the auxiliary device of the bridge effective prestress detector comprises a displacement sensor tool 100 and a front clamping jack 200;
front clamping jack
As shown in fig. 22, which is a structural view of the front clip type jack, the front clip type jack 200 includes a fixed base 201 and a movable claw 202 which is retractable with respect to the fixed base 201; the surface of the fixed base 201 is provided with a first group of threaded holes 203 and a second group of threaded holes 204; the end of the movable claw 202 is provided with an arc-shaped groove 205.
(II) displacement sensor frock
The displacement sensor fixture comprises a linear displacement sensor 101 and related components, and can enable a telescopic connecting rod 1013 of the linear displacement sensor 101 to be telescopic and convert mechanical displacement of the telescopic connecting rod 1013 into current analog quantity output which is linearly related with the telescopic connecting rod 1013. Through relevant subassembly, realize protecting linear displacement sensor 101, conveniently assemble to front truck formula jack, assemble simply and can accurately acquire the effect of displacement data.
Specifically, referring to fig. 1, a schematic structural diagram of a displacement sensor tool is shown; the displacement sensor tool 100 comprises a linear displacement sensor 101, a displacement sensor fixing part assembly 102, an outer protection sleeve 103, an inner protection sleeve 104, a displacement sensor telescopic part assembly 105, a displacement limiting plate 106, a first holding ring 107 and a second holding ring 108.
(1) Linear displacement sensor 101
FIG. 2 is a schematic diagram of a linear displacement sensor; one end of the linear displacement sensor 101 is provided with a fixed connecting rod 1011 and an acquisition cable 1012; the end of the fixed link 1011 has external threads; the other end of the linear displacement sensor 101 has a telescopic link 1013, and the end of the telescopic link 1013 has an external thread.
The telescopic connecting rod 1013 is stretchable, and along with the change of the stretching length, the acquisition cable 1012 outputs 4-20mA current on the premise of being connected with 24V direct current, and the corresponding length analog quantity of the linear displacement sensor 101 is obtained. The displacement current analog quantity is obtained, and the digital quantity value is obtained after analog-digital conversion of the data acquisition unit, and is analyzed in the upper computer software to obtain the displacement value.
(2) Displacement sensor fixed part assembly
As shown in fig. 3-15, displacement sensor mount assembly 102 includes a clip 1021, a first nut 1022, a second nut 1023, a first screw 1024, a second screw 1025, and an aviation plug 1026;
as shown in fig. 7, the clamping piece 1021 is provided with four through holes, namely a first through hole A1 positioned at the center, a second through hole A2 positioned at the side surface of the first through hole A1, a third through hole A3 and a fourth through hole A4 positioned at two opposite sides of the first through hole A1;
as shown in fig. 3-6, a first through hole A1 of the clamping piece 1021 is sleeved on the fixed connecting rod 1011, and a first screw cap 1022 and a second screw cap 1023 are respectively arranged at two sides of the first through hole A1, as shown in fig. 8, the perspective view of the first screw cap is shown; further, the clamping piece 1021 is fixed on the fixed connecting rod 1011;
as shown in fig. 9-10, the tail end of the collection cable 1012 passes through the second through hole A2 and is electrically connected with the positive and negative terminal C1 of the aviation plug 1026; as shown in fig. 13, which is a structural diagram of the first screw 1024, one end of the first screw 1024 is bolted to the third through hole A3 of the clamping piece 1021, and the other end of the first screw 1024 is bolted to the aviation plug 1026; one end of the second screw 1025 is fixed with a fourth through hole A4 of the clamping piece 1021 by a bolt, the other end of the second screw 1025 is fixed with an aviation plug 1026 by a bolt, and fig. 11-12 show the three-dimensional force of the aviation plug 1026, so that the aviation plug 1026 is fixed on the outer side of the clamping piece 1021; the outside of the aerial plug 1026 has an aerial plug female C2.
In addition, the outer peripheries of the clamping piece 1021 and the aviation plug 1026 are provided with external threads, the outer protection sleeve 103 is sleeved outside the linear displacement sensor 101, and the outer protection sleeve 103 is provided with internal threads, so that one end of the outer protection sleeve 103 is respectively in threaded connection and fixation with the external threads of the clamping piece 1021 and the external threads of the aviation plug 1026; as shown in fig. 14, a structure of the outer protection sleeve 103 is shown; as shown in fig. 15, a perspective view of the assembled outer protective sleeve and displacement sensor fixing part assembly is shown;
the linear displacement sensor 101 and the aviation plug 1026 are assembled together and protected by the outer protection sleeve, and the acquisition of the displacement analog current acquired by the linear displacement sensor 101 is realized by the aviation plug 1026. The assembly process is as follows:
1) The first through hole A1 of the clamping piece 1021 is sleeved on the fixed connecting rod 1011 of the linear displacement sensor, and the clamping piece 1021 is fixed on the fixed connecting rod 1011 through the first nut 1022 and the second nut 1023 because the fixed connecting rod 1011 of the linear displacement sensor is provided with external threads;
passing the acquisition cable 1012 of the linear displacement sensor through the second through hole A2 of the clamping piece 1021; this step is assembled to form the structure shown in fig. 4.
2) And then the first screw 1024 and the second screw 1025 are adopted to realize the connection and fixation between the clamping piece 1021 and the aviation plug 1026, and then the acquisition cable 1012 of the linear displacement sensor is electrically connected to the positive and negative terminal posts of the aviation plug 1026. Resulting in the structure shown in fig. 9.
By the connection mode, the fixed connecting rod 1011, the clamping piece 1021 and the aviation plug 1026 of the linear displacement sensor are formed into a whole. Then, when this whole is screwed into the outer protective sleeve 103, it is ensured that the wires of the linear displacement sensor and the aerial plug are not twisted together, causing wire problems.
3) Because the outer edges of the clamping piece 1021 and the aviation plug 1026 are provided with external threads, and the outer protection sleeve 103 is provided with internal threads at corresponding positions, the outer protection sleeve 103 is sleeved outside the clamping piece 1021 and the aviation plug 1026 in a threaded connection mode and is connected and fixed, so that the structure shown in fig. 15 is formed.
(3) Telescopic part assembly 105 of displacement sensor
The displacement sensor telescoping portion assembly 105 includes a connecting nut 1051; as shown in fig. 17 and 18, a back view of the coupling nut and a front view of the coupling nut, respectively; the outer end of the connecting nut 1051 has a first internally threaded bore B1, the inner end of the connecting nut 1051 has a second internally threaded bore B2, and the outer portion of the inner end of the connecting nut 1051 has an external thread B3; this feature is critical to the displacement sensor telescopic section assembly 105.
As shown in fig. 19, a block diagram of the inner protective sleeve 104; the outer end of the inner protection sleeve 104 is provided with internal threads; the inner protection sleeve 104 is sleeved outside the telescopic connecting rod 1013, and the second internal threaded hole B2 of the connecting nut 1051 is in threaded connection and fixation with the external thread of the telescopic connecting rod 1013 to form the structure shown in fig. 16; then the internal thread of the inner protection sleeve 104 is in threaded connection and fixation with the external thread B3 of the connecting screw cap 1051, so that the connection and fixation of the inner protection sleeve 104 and the connecting screw cap 1051 are realized;
the displacement limiting plate 106 has an internal threaded hole, and the internal threaded hole of the displacement limiting plate 106 is fixedly connected with the first internal threaded hole B1 of the connecting nut 1051 by a bolt, resulting in the structure shown in fig. 20 and 21.
The assembly process of the displacement sensor telescopic part assembly 105 is as follows:
1) The inner protection sleeve 104 is fitted over the outside of the telescopic link 1013 and the connecting nut 1051 is fitted to the end of the telescopic link 1013, namely: the second internally threaded hole B2 of the connecting nut 1051 is screwed and fixed with the external thread of the telescopic link 1013 to form the structure shown in fig. 16;
2) The end of the inner protection sleeve 104 is provided with an internal thread, and is fixedly connected with the external thread B3 of the connecting nut 1051 in a threaded manner;
3) The internal thread hole of the displacement limiting plate 106 is then connected and fixed to the first internal thread hole B1 of the connecting nut 1051 by a bolt, so that the structure shown in fig. 20 and 21 is formed.
(III) Assembly between Displacement sensor tool 100 and front Care Jack 200
As shown in fig. 1 and 22, the first holding ring 107 and the second holding ring 108 are fixedly installed on the outer portion of the outer protection sleeve 103;
the displacement limiting plate 106 is provided with an arc-shaped clamping ring, the displacement limiting plate 106 is clamped on the arc-shaped groove 205 of the movable claw 202, and the first holding ring 107 is fixedly connected with the first group of threaded holes 203 of the fixed base 201 through bolts; the second holding ring 108 is fixedly connected with a second group of threaded holes 204 of the fixed base 201 through bolts; and the fixed end of the displacement sensor tool 100 is connected and fixed with the fixed base 201 of the front clamping jack 200, and the movable end of the displacement sensor tool 100 is connected and fixed with the movable claw 202 of the front clamping jack 200.
Therefore, when the front clip jack 200 expands and contracts, the movable end of the displacement sensor fixture 100 is pulled to expand and contract.
The invention improves the front clamping type jack 200 to a certain extent, realizes the assembly between the displacement sensor tool 100 and the front clamping type jack 200, and when the jack stretches, the movable end of the displacement sensor tool 100 stretches synchronously, and the sensor analog current is output through the aviation plug 1026 to obtain the elongation of the displacement sensor. The invention has the following advantages:
(1) The structure is ingenious, and the purposes of fixing the linear displacement sensor, protecting the linear displacement sensor and accurately acquiring the displacement value are realized.
(2) The linear displacement sensor 101 and the aviation plug 1026 are assembled together, and then sleeved into the outer protective sleeve for protection, so that the wiring between the linear displacement sensor 101 and the aviation plug 1026 can be protected from being broken.
(3) The design of the connecting nut 1051 enables the linear displacement sensor 101, the inner protection sleeve 104 and the displacement limiting plate 106 to be connected, so that the linear displacement sensor 101 can move along with the telescopic movement of the jack.
(4) The whole device is assembled by adopting threaded connection, a welding procedure is not needed, and the assembly process is simple.
According to the invention, a set of fixed displacement sensor and a telescopic structure device are designed for detecting the stretching elongation of the prestress stretching construction process, so that the obtained stretching elongation parameters are more accurate and intelligent, and the quality of the prestress stretching construction of the detected bridge is ensured to meet the design and specification requirements.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which is also intended to be covered by the present invention.
Claims (2)
1. The auxiliary device of the effective prestress detector for the bridge is characterized by comprising a displacement sensor tool (100) and a front clamping jack (200);
the front clamping type jack (200) comprises a fixed base (201) and a movable claw (202) which can stretch and retract relative to the fixed base (201); the surface of the fixed base (201) is provided with a first group of threaded holes (203) and a second group of threaded holes (204); the tail end of the movable claw (202) is provided with an arc-shaped groove (205);
the displacement sensor tool (100) comprises a linear displacement sensor (101) and related components, a telescopic connecting rod (1013) of the linear displacement sensor (101) can be telescopic, mechanical displacement of the telescopic connecting rod (1013) is converted into linear related current analog quantity output, and the effects of protecting the linear displacement sensor (101), facilitating assembly to a front clamping jack (200) and accurately acquiring displacement data are achieved;
the displacement sensor tool (100) comprises a linear displacement sensor (101), a displacement sensor fixing part assembly (102), an outer protection sleeve (103), an inner protection sleeve (104), a displacement sensor telescopic part assembly (105), a displacement limiting plate (106), a first holding ring (107) and a second holding ring (108);
one end of the linear displacement sensor (101) is provided with a fixed connecting rod (1011) and an acquisition cable (1012); the tail end of the fixed connecting rod (1011) is provided with external threads; the other end of the linear displacement sensor (101) is provided with a telescopic connecting rod (1013), and the tail end of the telescopic connecting rod (1013) is provided with external threads;
the telescopic connecting rod (1013) can stretch, and along with the change of the stretching length, the acquisition cable (1012) outputs 4-20mA current on the premise of being connected with 24V direct current, and the corresponding length analog quantity of the linear displacement sensor (101) is; obtaining a digital magnitude value through obtaining a displacement current analog quantity and carrying out analog-to-digital conversion on the displacement current analog quantity by a data acquisition unit, and analyzing the digital magnitude value in upper computer software to obtain a displacement value;
the displacement sensor fixing part assembly (102) comprises a clamping piece (1021), a first screw cap (1022), a second screw cap (1023), a first screw rod (1024), a second screw rod (1025) and an aviation plug (1026); the clamping piece (1021) is provided with four through holes, namely a first through hole (A1) positioned in the center, a second through hole (A2) positioned on the side surface of the first through hole (A1), a third through hole (A3) and a fourth through hole (A4) positioned on two opposite sides of the first through hole (A1); the first through hole (A1) of the clamping piece (1021) is sleeved on the fixed connecting rod (1011), and the first screw cap (1022) and the second screw cap (1023) are respectively arranged on two sides of the first through hole (A1), so that the clamping piece (1021) is fixed on the fixed connecting rod (1011); the tail end of the acquisition cable (1012) passes through the second through hole (A2) and is electrically connected with a positive terminal (C1) and a negative terminal (C1) of the aviation plug (1026); one end of the first screw rod (1024) is fixed with a third through hole (A3) of the clamping piece (1021) through a bolt, and the other end of the first screw rod (1024) is fixed with the aviation plug (1026) through a bolt; one end of the second screw rod (1025) is fixed with a fourth through hole (A4) of the clamping piece (1021) through a bolt, and the other end of the second screw rod (1025) is fixed with the aviation plug (1026) through a bolt, so that the aviation plug (1026) is fixed on the outer side of the clamping piece (1021);
in addition, the clamping piece (1021) and the aviation plug (1026) are provided with external threads on the outer periphery, the outer protection sleeve (103) is sleeved outside the linear displacement sensor (101), the outer protection sleeve (103) is provided with internal threads, and one end of the outer protection sleeve (103) is in threaded connection and fixation with the external threads of the clamping piece (1021) and the external threads of the aviation plug (1026) respectively;
the displacement sensor telescoping part assembly (105) comprises a connecting nut (1051); the outer end of the connecting nut (1051) is provided with a first internal threaded hole (B1), the inner end of the connecting nut (1051) is provided with a second internal threaded hole (B2), and the outer part of the inner end of the connecting nut (1051) is provided with an external thread (B3); the outer end of the inner protection sleeve (104) is provided with an internal thread; the inner protection sleeve (104) is sleeved outside the telescopic connecting rod (1013), and a second internal threaded hole (B2) of the connecting nut (1051) is in threaded connection and fixation with the external thread of the telescopic connecting rod (1013); then, the internal thread of the inner protection sleeve (104) is in threaded connection and fixation with the external thread (B3) of the connecting nut (1051), so that the connection and fixation of the inner protection sleeve (104) and the connecting nut (1051) are realized; the displacement limiting plate (106) is provided with an internal threaded hole, and the internal threaded hole of the displacement limiting plate (106) is fixedly connected with a first internal threaded hole (B1) of the connecting nut (1051) through a bolt;
the first holding ring (107) and the second holding ring (108) are fixedly arranged outside the outer protection sleeve (103);
the displacement limiting plate (106) is clamped on the arc-shaped groove (205) of the movable claw (202), and the first holding ring (107) is fixedly connected with the first group of threaded holes (203) of the fixed base (201) through bolts; the second holding ring (108) is fixedly connected with a second group of threaded holes (204) of the fixed base (201) through bolts; further, the fixed end of the displacement sensor tool (100) is fixedly connected with the fixed base (201) of the front clamping jack (200), and the movable end of the displacement sensor tool (100) is fixedly connected with the movable claw (202) of the front clamping jack (200);
the linear displacement sensor (101) and the aviation plug (1026) are assembled together and protected by the outer protection sleeve, and the acquisition of the displacement analog current acquired by the linear displacement sensor (101) is realized by the aviation plug (1026), and the assembly process is as follows:
1) a first through hole (A1) of a clamping piece (1021) is sleeved on a fixed connecting rod (1011) of a linear displacement sensor, and the clamping piece (1021) is fixed on the fixed connecting rod (1011) through a first nut (1022) and a second nut (1023) because the fixed connecting rod (1011) of the linear displacement sensor is provided with external threads;
passing an acquisition cable (1012) of the linear displacement sensor through a second through hole (A2) of the clamping piece (1021);
2) Then, the first screw rod (1024) and the second screw rod (1025) are adopted to realize the connection and fixation between the clamping piece (1021) and the aviation plug (1026), and then the acquisition cable (1012) of the linear displacement sensor is electrically connected to the positive and negative terminal posts of the aviation plug (1026);
through the connection mode, the fixed connecting rod (1011), the clamping piece (1021) and the aviation plug (1026) of the linear displacement sensor form a whole; then, when the whole body is screwed into the outer protective sleeve (103), the connection line of the linear displacement sensor and the aviation plug can be ensured not to be twisted together, so that the line problem is caused;
3) Because the outer edges of the clamping piece (1021) and the aviation plug (1026) are provided with external threads, and the outer protection sleeve (103) is provided with internal threads at the corresponding positions, the outer protection sleeve (103) is sleeved outside the clamping piece (1021) and the aviation plug (1026) in a threaded connection mode and is fixedly connected;
the assembly process of the telescopic part component (105) of the displacement sensor is as follows:
1) The inner protection sleeve (104) is sleeved outside the telescopic connecting rod (1013), and then the connecting nut (1051) is assembled to the end part of the telescopic connecting rod (1013), namely: the second internal threaded hole (B2) of the connecting screw cap (1051) is in threaded connection and fixation with the external thread of the telescopic connecting rod (1013);
2) The end part of the inner protection sleeve (104) is provided with an internal thread, and is in threaded connection and fixation with an external thread (B3) of the connecting nut (1051);
3) Then the internal thread hole of the displacement limiting plate (106) is connected and fixed with the first internal thread hole (B1) of the connecting nut (1051) through a bolt;
therefore, the displacement sensor tool (100) and the front clamping type jack (200) are assembled together, the telescopic part component of the displacement sensor tool (100) is fixed with the movable claw (202) of the front clamping type jack (200), and the fixed part component of the displacement sensor tool (100) is fixed with the fixed end of the front clamping type jack (200), so that when the bridge prestress tensioning is carried out, on one hand, the tensioning force is provided through the front clamping type jack (200) and the tensioning process is carried out, and meanwhile, the tensioning elongation is measured through the displacement sensor tool (100), so that the corresponding relation data of the tensioning elongation and the tensioning force are obtained, and an accurate detection result is obtained through analyzing the obtained data.
2. The bridge effective pre-stress detector aid of claim 1, wherein the outside of the aerial plug (1026) has an aerial plug female head (C2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810971878.8A CN108955971B (en) | 2018-08-24 | 2018-08-24 | Auxiliary device of bridge effective prestress detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810971878.8A CN108955971B (en) | 2018-08-24 | 2018-08-24 | Auxiliary device of bridge effective prestress detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108955971A CN108955971A (en) | 2018-12-07 |
| CN108955971B true CN108955971B (en) | 2024-02-20 |
Family
ID=64473981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810971878.8A Active CN108955971B (en) | 2018-08-24 | 2018-08-24 | Auxiliary device of bridge effective prestress detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108955971B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112302062B (en) * | 2020-10-09 | 2022-04-29 | 河海大学 | Assembly type high-precision steel support shaft force meter erection protection device and implementation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201717344U (en) * | 2010-06-29 | 2011-01-19 | 海洋王照明科技股份有限公司 | Charging assembly and electric torch |
| CN104132635A (en) * | 2014-08-14 | 2014-11-05 | 河北高达电子科技有限公司 | Bridge prestress displacement detection device |
| CN205259620U (en) * | 2015-12-24 | 2016-05-25 | 中国铁路总公司 | Measurement device for be used for automatic push -pull system prestressing tendons elongation of opening of indisputable road bridge roof beam prestressing force |
| CN205838432U (en) * | 2016-06-08 | 2016-12-28 | 铁道第三勘察设计院集团有限公司 | Displacement sensor device and the intelligent jack with this device |
| CN206019688U (en) * | 2016-08-30 | 2017-03-15 | 北京威控科技股份有限公司 | Integrated underground water detection terminal |
| CN206531459U (en) * | 2017-02-10 | 2017-09-29 | 东华理工大学 | A kind of tensioning displacement measuring device for preceding clamping type jack |
-
2018
- 2018-08-24 CN CN201810971878.8A patent/CN108955971B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201717344U (en) * | 2010-06-29 | 2011-01-19 | 海洋王照明科技股份有限公司 | Charging assembly and electric torch |
| CN104132635A (en) * | 2014-08-14 | 2014-11-05 | 河北高达电子科技有限公司 | Bridge prestress displacement detection device |
| CN205259620U (en) * | 2015-12-24 | 2016-05-25 | 中国铁路总公司 | Measurement device for be used for automatic push -pull system prestressing tendons elongation of opening of indisputable road bridge roof beam prestressing force |
| CN205838432U (en) * | 2016-06-08 | 2016-12-28 | 铁道第三勘察设计院集团有限公司 | Displacement sensor device and the intelligent jack with this device |
| CN206019688U (en) * | 2016-08-30 | 2017-03-15 | 北京威控科技股份有限公司 | Integrated underground water detection terminal |
| CN206531459U (en) * | 2017-02-10 | 2017-09-29 | 东华理工大学 | A kind of tensioning displacement measuring device for preceding clamping type jack |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108955971A (en) | 2018-12-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108955971B (en) | Auxiliary device of bridge effective prestress detector | |
| DE102015115925B3 (en) | Fiber optic chuck, fiber optic sensor and manufacturing process | |
| CN202735163U (en) | Fixture for testing bolted connection extrusion strength of composite material | |
| CN200975926Y (en) | Steel strand pulling force detector | |
| CN106443085B (en) | Telescopic high-altitude wiring device | |
| CN106525588B (en) | Multi-deformation-mode self-adaptive extensometer | |
| CN109027622B (en) | Fixing device for testing fundamental frequency at 1/3 position of flexible cable structure and using method | |
| CN206258318U (en) | A kind of shape changeable mode adaptive type tens(i)ometer | |
| DE102015115927A1 (en) | Sensor patch and method of making a sensor patch | |
| CN209295854U (en) | A kind of self-pierce riveting head section aided measurement device | |
| CN209512823U (en) | A kind of reusable bolt load sensor | |
| EP0113906A1 (en) | Method for measuring deformations of vehicle frames or bodies and measuring frame for performing that method | |
| CN205740143U (en) | Survey intermediate plate retraction value device and the intelligent jack with this device | |
| CN220366946U (en) | Column type pressure sensor calibration device | |
| CN209589655U (en) | A kind of extensometer convenient for removal | |
| CN214793554U (en) | Resistance strain type tension sensing and tension eccentricity detection combiner | |
| CN105737715A (en) | Power transmission line near-end and far-end electric distance measurement device | |
| CN209167530U (en) | A kind of laser sensor of angle adjustable | |
| CN204807022U (en) | Gauge is indicateed to two handheld lamella formula internal threads | |
| CN209248026U (en) | A kind of radiation detector assembly | |
| CN101435688A (en) | Caliber rule for measuring pitch diameter of thread | |
| CN220853716U (en) | Multifunctional flow sensor of embedded standard nozzle based on fiber bragg grating | |
| CN212844401U (en) | Plant quantity investigation measuring device | |
| CN214426837U (en) | Illumination intensity measuring device | |
| CN212845602U (en) | Loop resistance and transformer direct current resistance tester |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |