CN115420445A - Bridge detection device - Google Patents
Bridge detection device Download PDFInfo
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- CN115420445A CN115420445A CN202211365107.7A CN202211365107A CN115420445A CN 115420445 A CN115420445 A CN 115420445A CN 202211365107 A CN202211365107 A CN 202211365107A CN 115420445 A CN115420445 A CN 115420445A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0008—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings of bridges
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
- G01M5/005—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
- G01N3/062—Special adaptations of indicating or recording means with mechanical indicating or recording means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/40—Investigating hardness or rebound hardness
- G01N3/52—Investigating hardness or rebound hardness by measuring extent of rebound of a striking body
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Abstract
The invention relates to the technical field of bridge concrete detection, in particular to a bridge detection device, which comprises a shell, a central guide rod, an impact hammer, an impact tension spring, an inner flange, an outer flange and a pointer set, wherein the central guide rod is arranged on the shell; the central guide rod is slidably arranged in the shell, the central guide rod is provided with a first end and a second end, the impact rod is arranged at the first end of the central guide rod, one end of an impact tension spring is arranged on the impact hammer, the inner flange is arranged at the second end of the central guide rod, the outer flange is slidably arranged on the inner flange, the pointer set is slidably arranged on the shell and comprises a first pointer and a second pointer; the elastic hammer has a first working state and a second working state, and drives the first pointer to move when in the first working state; when the flange is in the second working state, the outer flange drives the second pointer to move through the elastic hammer. Through setting up pointer group for two data can be surveyed in succession to the device, improve the accuracy of data when improving measurement of efficiency.
Description
Technical Field
The invention relates to the technical field of bridge concrete detection, in particular to a bridge detection device.
Background
The bridge is one of important traffic major roads, and many large-scale cities need the bridge to alleviate traffic pressure, and the bridge is used to realize vehicle shunting. The more vehicles pass through a bridge, the greater the load on the bridge, and therefore, it is necessary to periodically detect each performance of the bridge.
In order to ensure the quality of the bridge, the strength of the concrete bridge, the concrete shrinkage performance detection, the concrete crack depth detection, the thickness detection of the steel bar protection layer and the like need to be detected, wherein the strength detection of the concrete bridge generally adopts a concrete resiliometer.
The concrete resiliometer is a detection device, is suitable for detecting the strength of general building elements, bridges and various concrete elements (plates, beams, columns and bridges), and has an impact function as a main technical index; the rigidity of the tension spring is flicked; a percussion hammer stroke; the maximum static friction and the rate of penetration of the pointer system are averaged.
The existing concrete resiliometers are divided into a digital type and a pointer type, the digital concrete resiliometers can only be carried out at a certain temperature, and a plurality of use limitations exist; the pointer type concrete rebound tester is wide in application range, but only one numerical value can be measured through one-time pressing, the efficiency is low, the measured numerical value is possibly inaccurate, and the bridge detection device is provided for solving the problem.
Disclosure of Invention
In view of the above, it is necessary to provide a bridge inspection apparatus that addresses the problems of the conventional bridge inspection apparatus.
The above purpose is realized by the following technical scheme:
a bridge inspection device, comprising:
a housing;
a center guide slidably disposed within the housing, the center guide having a first end and a second end;
the elastic striking rod is arranged at the first end of the central guide rod;
a striking hammer slidably disposed on the center guide;
the spring striking tension spring is arranged on the spring striking hammer at one end;
an inner flange disposed at a second end of the center guide;
an outer flange slidably disposed on the inner flange;
a pointer set including a first pointer and a second pointer, both of which are slidably disposed on the housing;
the elastic hammer has a first working state and a second working state, and when the elastic hammer is in the first working state, the elastic hammer drives the first pointer to move; when the outer flange is in the second working state, the outer flange drives the second pointer to move through the elastic hammer;
a plurality of rotating grooves are uniformly formed in the outer circumferential wall surface of the central guide rod; a plurality of bulges matched with the rotating groove are uniformly arranged on the inner circumferential wall surface of the elastic driving hammer, and a plurality of connecting rods are arranged on the outer circumferential wall surface of the elastic driving hammer; when the first pointer and the connecting rods are in the same straight line, the second pointer is positioned between the adjacent connecting rods; when the second pointer and the connecting rods are located on the same straight line, the first pointer is located between the adjacent connecting rods.
In one embodiment, the device further comprises a first elastic piece, a second elastic piece, a third elastic piece, a rear cover, a hook and a delay mechanism; the rear cover is detachably arranged on the shell; the hook can be rotatably arranged on the inner flange; one end of the first elastic piece is abutted against the outer flange, and the other end of the first elastic piece is abutted against the rear cover; one end of the second elastic piece is fixedly arranged on the inner flange, and the other end of the second elastic piece is abutted against the rear cover; one end of the third elastic piece is arranged on the inner flange, and the other end of the third elastic piece can abut against the hook; the delay mechanism is arranged on the inner flange and used for enabling the elastic hammer to be switched from the first working state to the second working state.
In one embodiment, the stiffness coefficient of the first elastic member is greater than the stiffness coefficient of the striking tension spring.
In one embodiment, the delay mechanism comprises a damping cylinder, a long ejector rod, a spring stop block, a fourth elastic piece, a fifth elastic piece, a sixth elastic piece and a sliding stop block, wherein the damping cylinder is arranged on the inner flange; the long ejector rod is slidably arranged on the inner flange; the long ejector rod is always abutted against the spring ejector rod; the spring ejector rod is slidably arranged on the inner flange; one end of the fourth elastic piece is arranged on the inner flange, and the other end of the fourth elastic piece is arranged on the spring ejector rod; the spring ejector rod is always abutted against the spring stop block; the spring stop block is slidably arranged on the inner flange; one end of the fifth elastic piece is arranged on the inner flange, and the other end of the fifth elastic piece is arranged on the spring stop block; one end of the sliding block is arranged on the damping cylinder in a sliding manner; one end of the sixth elastic piece is arranged on the inner flange, and the other end of the sixth elastic piece is arranged on the sliding stop block.
In one embodiment, when the elastic hammer is in the first working state, the spring stop abuts against the sliding stop, and the inner flange and the outer flange move synchronously; when the elastic hammer is in the second working state, the spring stop block is not abutted to the sliding stop block any more, and the outer flange is separated from the inner flange.
In one embodiment, the device further comprises a sliding rod; the inner circumferential wall surface of the shell is provided with a pointer groove, a fixed block and a guide rail, and the fixed block is arranged at two ends of the pointer groove; the sliding rod is detachably arranged on the fixed block, and the pointer group is slidably arranged on the sliding rod; the outer flange is movable along the guide rail.
In one embodiment, the dust-proof sealing ring is further included and used for reducing dust entering the shell.
The invention has the beneficial effects that:
the invention relates to a bridge detection device, which comprises a shell, a central guide rod, an elastic striking hammer, an elastic striking tension spring, an inner flange, an outer flange and a pointer set, wherein the shell is provided with a central guide rod; the center guide rod is arranged in the shell in a sliding mode and provided with a first end and a second end, the elastic striking rod is arranged at the first end of the center guide rod, one end of the elastic striking tension spring is arranged on the elastic striking hammer, the inner flange is arranged at the second end of the center guide rod, the outer flange is arranged on the inner flange in a sliding mode, the pointer set comprises a first pointer and a second pointer, and the first pointer and the second pointer can be arranged on the shell in a sliding mode; the elastic driving hammer has a first working state and a second working state, and drives the first pointer to move when in the first working state; when the flange is in the second working state, the outer flange drives the second pointer to move through the elastic hammer. By arranging the pointer group, two data can be continuously measured by one-time pressing, and the accuracy of the data is improved while the measurement efficiency is improved.
Drawings
Fig. 1 is a schematic perspective view of a bridge inspection apparatus according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an explosion structure of a part of a bridge inspection apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic view of a part A of the bridge inspection device shown in FIG. 2;
FIG. 4 is a schematic view of a portion of the bridge inspection device shown in FIG. 2 at a position B;
FIG. 5 is a schematic view of a partial enlarged structure at a position C of the bridge inspection device shown in FIG. 2;
fig. 6 is a schematic perspective view of a housing of a bridge inspection apparatus according to an embodiment of the present invention;
fig. 7 is a schematic perspective view of a rear cover of a bridge inspection apparatus according to an embodiment of the present invention;
FIG. 8 is a schematic front view of a bridge inspection device with a housing removed according to an embodiment of the present invention;
FIG. 9 is a schematic view of a partial enlarged structure at D of the bridge inspection device shown in FIG. 8;
FIG. 10 is a schematic cross-sectional view of the bridge inspection device shown in FIG. 9;
fig. 11 is a partial enlarged structural view of a portion E of the bridge inspection device shown in fig. 10.
Wherein:
100. a housing; 101. a pointer slot; 102. a fixed block; 103. a guide rail; 110. a rear cover; 111. unhooking the bolt; 112. a first pressure spring; 120. capping; 130. a dustproof sealing ring; 140. a snap ring; 150. a slide bar;
200. a tapping rod;
300. a spring hammer; 301. connecting holes; 302. a hook is buckled; 303. resetting the top ring; 304. a connecting rod; 310. the tension spring is flicked; 320. a tension spring seat;
400. a center guide bar; 401. a rotating groove; 410. an outer flange; 411. a mating groove; 412. a guide rail groove; 413. a push rod; 420. an inner flange; 421. briquetting; 422. a first return spring; 423. hooking; 424. a second return spring;
500. a delay mechanism; 510. connecting blocks; 511. a damping cylinder; 520. a long ejector rod; 530. a spring ejector rod; 531. a second pressure spring; 540. a spring stop; 541. a third pressure spring; 550. a sliding stopper; 551. a damping rod; 552. a sloping block; 553. blocking protrusions; 554. a tension spring;
600. a first pointer; 610. and a second pointer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below by way of embodiments with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
The numbering of the components themselves, such as "first", "second", etc., is used herein only to distinguish between the objects depicted and not to have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings). In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like are used in the orientations and positional relationships indicated in the drawings, which are based on the orientations and positional relationships indicated in the drawings, and are used for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have specific orientations, be constructed and operated in specific orientations, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
As shown in fig. 1 to 11, a bridge inspection apparatus according to an embodiment of the present invention is used for inspecting the strength of bridge concrete; in this embodiment, the bridge detection apparatus includes a housing 100, a tapping rod 200, a tapping hammer 300, a tapping tension spring 310, a center guide rod 400, an outer flange 410, an inner flange 420, and a pointer set; the housing 100 has a rear cover 110 screw-coupled to one end thereof and a cap 120 and a snap ring 140 coupled to the other end thereof.
The center guide rod 400 can be sleeved in the housing 100 in a sliding manner along the axial direction of the housing 100, the center guide rod 400 has a first end and a second end, one end of the center guide rod 400 close to the cap 120 is the first end, one end of the center guide rod 400 close to the rear cover 110 is the second end, the first end of the center guide rod 400 can be detachably connected with the tapping rod 200, and the second end is fixedly connected with the inner flange 420; one end of the impact hammer 300 is fixedly provided with a connecting hole 301, a hook buckle 302 and a reset top ring 303, the other end of the impact hammer is fixedly connected with an impact tension spring 310, one end of the impact tension spring 310 is fixedly connected with an tension spring seat 320, and the impact hammer 300 can be slidably sleeved on the central guide rod 400 through the connecting hole 301; the outer flange 410 is slidably fitted over the inner flange 420 in the axial direction of the housing 100.
The pointer set includes a first pointer 600 and a second pointer 610, and the first pointer 600 and the second pointer 610 are slidably disposed at the pointer slot 101; the rapping hammer 300 has a first working state and a second working state, when in the first working state, the rapping hammer 300 drives the first pointer 600 to move towards the direction close to the rear cover 110, and the final position of the first pointer 600 on the casing 100 is the first detection data; in the second working state, the outer flange 410 drives the second pointer 610 to move toward the rear cover 110 through the hammer 300, and the final position of the second pointer 610 on the casing 100 is the second detection data.
Or in the first working state, the hammer 300 drives the second pointer 610 to move toward the rear cover 110, and the final position of the second pointer 610 on the casing 100 is the first detection data; in the second working state, the outer flange 410 drives the first pointer 600 to move toward the rear cover 110 through the tapping hammer 300, and the final position of the first pointer 600 on the casing 100 is the second detection data.
A plurality of rotating grooves 401 are uniformly formed on the peripheral wall surface of one end of the central guide rod 400 close to the cap 120; a plurality of protrusions matched with the rotating grooves 401 are uniformly arranged on the inner circumferential wall surface of the impact hammer 300, and a plurality of connecting rods 304 are uniformly arranged on the outer circumferential wall surface of one end of the impact hammer 300 far away from the hook fastener 302.
When the impact hammer 300 impacts the impact rod 200, the impact hammer 300 rotates a certain angle around its axis through the cooperation of the protrusion and the rotation groove 401, so that the first pointer 600 and the connecting rod 304 are in the same straight line, and the second pointer 610 is located at the gap between adjacent connecting rods 304, that is, when the impact hammer 300 moves towards the direction close to the rear cover 110, only the first pointer 600 can be driven to move; or the second pointer 610 and the connecting rods 304 are in the same straight line, and the first pointer 600 is located at the gap between the adjacent connecting rods 304, that is, when the impact hammer 300 moves to the direction close to the rear cover 110, only the second pointer 610 can be moved.
By arranging the first pointer 600 and the second pointer 610, the bridge detection device can continuously measure two data, so that the accuracy of the data is improved while the measurement efficiency is improved.
In some embodiments, the bridge detection apparatus includes a first elastic member, a second elastic member, a third elastic member, the rear cover 110, a hook 423, and a delay mechanism 500; in this embodiment, the first elastic member is a first compression spring 112, the second elastic member is a first return spring 422, and the third elastic member is a second return spring 424; the rear cover 110 is in threaded connection with a unhooking bolt 111; one end of the first pressure spring 112 is abutted against the rear cover 110, and the other end is abutted against the outer flange 410; a pressing block 421 and 4 first return springs 422 are fixedly connected to the inner flange 420, one ends of the first return springs 422 are abutted to the rear cover 110, the hooks 423 are hinged to the inner flange 420, one ends of the second return springs 424 can be abutted to the hooks 423, and the other ends of the second return springs 424 are fixedly connected with the inner flange 420; a delay mechanism 500 is provided on the inner flange 420, the delay mechanism 500 being configured to switch the hammer latch 300 from the first operating state to the second operating state.
In some embodiments, to ensure the accuracy of the second measurement data, the stiffness coefficient of the first compression spring 112 should be greater than the stiffness coefficient of the impact tension spring 310.
When one end of the tapping rod 200 abuts against the bridge concrete to be measured and then the tapping rod 200 is pressed into the housing 100 by manually applying a pushing force, the deformation amount of the tapping tension spring 310 is greater than that of the first compression spring 112, so as to ensure that the tapping hammer 300 has the same or similar rebound amount, it is necessary to ensure that the stiffness coefficient of the first compression spring 112 is greater than that of the tapping tension spring 310.
In some embodiments, the delay mechanism 500 includes a connection block 510, a damping cylinder 511, a long push rod 520, a spring push rod 530, a spring stopper 540, a fourth elastic member, a fifth elastic member, a sixth elastic member, and a slide stopper 550, and in this embodiment, the fourth elastic member is a second compression spring 531, the fifth elastic member is a third compression spring 541, and the sixth elastic member is a tension spring 554; the connecting block 510 is fixedly connected with the lower end face of the inner flange 420, and a damping cylinder 511 is fixedly arranged in the connecting block 510; the long push rod 520 can be sleeved on the inner flange 420 in a vertically sliding manner, one end of the long push rod 520 can be abutted with the hook 423, and the other end of the long push rod 520 is always abutted with the spring push rod 530; the spring top bar 530 can be sleeved on the inner flange 420 in a left-right sliding manner, and one end of the spring top bar 530 is always abutted on the spring stop block 540; one end of the second pressure spring 531 is fixedly connected with the inner flange 420, and the other end of the second pressure spring is abutted against the spring push rod 530; the spring stopper 540 can be sleeved on the inner flange 420 in a vertically sliding manner; one end of a third pressure spring 541 is fixedly connected with the inner flange 420, and the other end is fixedly connected with a spring stop 540; the sliding block 550 comprises a damping rod 551, an inclined block 552 and a stop boss 553, the sliding block 550 is sleeved in the damping cylinder 511 through the damping rod 551, and the damping force applied to the damping rod 551 is larger towards the left; one end of the tension spring 554 is fixedly connected with the inner wall of the connecting block 510, and the other end is fixedly connected with the sliding block 550.
In some embodiments, spring stop 540 abuts slide stop 550 when hammer 300 is in the first operating state, such that outer flange 410 and inner flange 420 move synchronously; when the hammer 300 is in the second operating state, the spring stop 540 no longer abuts against the slide stop 550, so that the outer flange 410 and the inner flange 420 are separated.
In some embodiments, the bridge detection apparatus comprises a slide bar 150; a pointer groove 101, a fixed block 102 and a guide rail 103 are fixedly arranged on the shell 100, and scales are arranged on the outer circumferential wall surface of the shell 100 at the pointer groove 101; the number of the pointer grooves 101 is two, and the two groups of the pointer grooves are symmetrically arranged relative to the shell 100; the number of the fixing blocks 102 is 4, every two fixing blocks are in a group and are arranged at two ends of the pointer groove 101; the number of the guide rails 103 is two and is symmetrically arranged with respect to the housing 100; the number of the sliding rods 150 is 2, the sliding rods are in threaded connection with the fixed block 102, and the first pointer 600 and the second pointer 610 can be sleeved on the sliding rods 150 in a vertically sliding manner; the outer flange 410 is fixedly provided with matching grooves 411, guide rail grooves 412 and push rods 413, the number of the guide rail grooves 412 is two, the guide rail grooves are symmetrically arranged relative to the outer flange 410, and the number of the push rods 413 is 2; the outer flange 410 is sleeved with the inner flange 420 through a matching groove 411, and the outer flange 410 is sleeved on the guide rail 103 through a guide rail groove 412; a plurality of rotating grooves 401 are uniformly formed on the peripheral wall surface of one end of the center guide 400 away from the inner flange 420.
In some embodiments, the bridge inspection device includes a dust seal 130, the dust seal 130 being mounted between the cap 120 and the snap ring 140, the dust seal 130 being configured to reduce dust from falling into the housing 100.
With reference to the above embodiments, the usage principle and the working process of the embodiments of the present invention are as follows:
one end of the tapping rod 200 is first abutted on the bridge concrete to be measured, and then a pushing force is manually applied to press the tapping rod 200 into the housing 100.
In the above process, the clamp ring 140 and the tension spring seat 320 are in a clamping state, so that the tension spring seat 320 cannot move; the movement of the tapping rod 200 drives the center guide rod 400 to move, further drives the inner flange 420 to move towards the direction close to the rear cover 110, and the blocking protrusion 553 blocks the outer flange 410 at this time, so that the inner flange 420 and the outer flange 410 move synchronously, and the first compression spring 112 and the first return spring 422 compress and accumulate force; on the other hand, since the hook 423 and the hook buckle 302 are in a clamping state at this time, the inner flange 420 drives the tapping hammer 300 to move synchronously toward the direction close to the rear cover 110, so that the tapping tension spring 310 stretches and stores force.
When the tapping lever 200 moves to the set position, the unhooking bolt 111 abuts against the hook 423, so that the hook 423 rotates relative to the inner flange 420, the hook 423 and the tapping hammer 300 are disengaged from each other, and the tapping hammer 300 moves in a direction away from the rear cover 110 by the tapping tension spring 310. Meanwhile, the long ejector rod 520 is pressed downwards by the rotation of the hook 423, the long ejector rod 520 drives the spring ejector rod 530 to move rightwards, and then the spring stop block 540 is driven to move upwards, so that the spring stop block 540 does not block the sliding stop block 550 any more; the slide stopper 550 is slowly moved leftward by the combined action of the tension spring 554, the damping rod 551 and the damping cylinder 511.
When the rapping hammer 300 impacts the rapping bar 200, the rapping hammer 300 rotates a certain angle around its axis through the cooperation of the protrusions and the rotating grooves 401, so that the first pointer 600 is located at the position of the connecting rods 304 and the second pointer 610 is located at the gap between the adjacent connecting rods 304; at this time, under the action of the tapping tension spring 310, the tapping hammer 300 moves toward the direction approaching the rear cover 110, and further drives the first pointer 600 to move toward the direction approaching the rear cover 110 until the tapping tension spring 310 returns to the original length, and at this time, the position of the first pointer 600 on the housing 100 is the first detection data. At the same time, the delay mechanism 500 delays the end, and the sliding block 550 is fully received in the connecting block 510, thereby disconnecting the inner flange 420 from the outer flange 410. Under the action of the first compressed spring 112, the outer flange 410 is driven to move in a direction away from the rear cover 110 until the push rod 413 abuts against the impact hammer 300, and then the impact hammer 300 is driven to move synchronously in a direction away from the rear cover 110, and secondary impact is performed (in order to make the forces of the two times the same or approximately the same, parameters such as stiffness coefficient of the first compressed spring 112 can be adjusted), when the impact hammer 300 impacts the impact rod 200, the impact hammer 300 rotates around the axis of the impact hammer 300 by a certain angle through the cooperation of the protrusion and the rotating groove 401, so that the second pointer 610 is driven to move in a direction close to the rear cover 110 until the first compressed spring 112 recovers the original length, at this time, the position of the second pointer 610 on the housing 100 is second detection data, if the difference between the two times of the test data is too large, retesting can be omitted, and thus the accuracy of the measurement data is improved.
After the data is recorded, the hand is released, the inner flange 420 is driven to move in the direction away from the rear cover 110 under the action of the first return spring 422, and the hook 423 is reset under the action of the second return spring 424. When the inner flange 420 moves to the position of the outer flange 410, the pressing block 421 drives the outer flange 410 to move synchronously, and when the inner flange 420 moves to the position of the impact hammer 300, the reset top ring 303 abuts against the inclined block 552 to enable the inclined block 552 to move rightwards, so that the delay mechanism 500 is reset; the first pointer 600 and the second pointer 610 are then manually reset to begin the next measurement.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent should be subject to the appended claims.
Claims (7)
1. A bridge inspection device, comprising:
a housing;
a center guide slidably disposed within the housing, the center guide having a first end and a second end;
the elastic striking rod is arranged at the first end of the central guide rod;
a striking hammer slidably disposed on the center guide;
the spring striking tension spring is arranged on the spring striking hammer at one end;
an inner flange disposed at a second end of the center guide;
an outer flange slidably disposed on the inner flange;
a pointer set including a first pointer and a second pointer, both of which are slidably disposed on the housing;
the elastic driving hammer has a first working state and a second working state, and when the elastic driving hammer is in the first working state, the elastic driving hammer drives the first pointer to move; when the outer flange is in the second working state, the outer flange drives the second pointer to move through the elastic hammer;
a plurality of rotating grooves are uniformly formed in the outer circumferential wall surface of the central guide rod; a plurality of bulges matched with the rotating groove are uniformly arranged on the inner circumferential wall surface of the elastic driving hammer, and a plurality of connecting rods are arranged on the outer circumferential wall surface of the elastic driving hammer; when the first pointer and the connecting rods are positioned on the same straight line, the second pointer is positioned between the adjacent connecting rods; when the second pointer and the connecting rods are located on the same straight line, the first pointer is located between the adjacent connecting rods.
2. The bridge inspection device of claim 1, further comprising a first elastic member, a second elastic member, a third elastic member, a back cover, a hook, and a delay mechanism; the rear cover is detachably arranged on the shell; the hook can be rotatably arranged on the inner flange; one end of the first elastic piece is abutted against the outer flange, and the other end of the first elastic piece is abutted against the rear cover; one end of the second elastic piece is fixedly arranged on the inner flange, and the other end of the second elastic piece is abutted against the rear cover; one end of the third elastic piece is arranged on the inner flange, and the other end of the third elastic piece can abut against the hook; the delay mechanism is arranged on the inner flange and used for enabling the elastic hammer to be switched from the first working state to the second working state.
3. The bridge inspection device of claim 2, wherein the stiffness coefficient of the first resilient member is greater than the stiffness coefficient of the slap extension spring.
4. The bridge inspection device of claim 2, wherein the delay mechanism comprises a damping cylinder, a long ejector rod, a spring stop, a fourth elastic member, a fifth elastic member, a sixth elastic member and a sliding stop, the damping cylinder being disposed on the inner flange; the long ejector rod is arranged on the inner flange in a sliding manner; the long ejector rod is always abutted against the spring ejector rod; the spring ejector rod is slidably arranged on the inner flange; one end of the fourth elastic piece is arranged on the inner flange, and the other end of the fourth elastic piece is arranged on the spring ejector rod; the spring ejector rod is always abutted against the spring stop block; the spring stop block is slidably arranged on the inner flange; one end of the fifth elastic piece is arranged on the inner flange, and the other end of the fifth elastic piece is arranged on the spring stop block; one end of the sliding block is arranged on the damping cylinder in a sliding manner; one end of the sixth elastic piece is arranged on the inner flange, and the other end of the sixth elastic piece is arranged on the sliding stop block.
5. The bridge inspection device of claim 4, wherein when the hammer latch is in the first operating state, the spring stop abuts against the slide stop, and the inner flange and the outer flange move synchronously; when the elastic hammer is in the second working state, the spring stop block is not abutted to the sliding stop block any more, and the outer flange is separated from the inner flange.
6. The bridge inspection device of claim 1, further comprising a slide bar; the inner circumferential wall surface of the shell is provided with a pointer groove, a fixed block and a guide rail, and the fixed block is arranged at two ends of the pointer groove; the sliding rod is detachably arranged on the fixed block, and the pointer group is slidably arranged on the sliding rod; the outer flange is movable along the guide rail.
7. The bridge inspection device of claim 1, further comprising a dust seal to reduce the ingress of dust into the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211365107.7A CN115420445B (en) | 2022-11-03 | 2022-11-03 | Bridge detection device |
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