CN116559002A - Concrete strength detection device - Google Patents
Concrete strength detection device Download PDFInfo
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- CN116559002A CN116559002A CN202310767067.7A CN202310767067A CN116559002A CN 116559002 A CN116559002 A CN 116559002A CN 202310767067 A CN202310767067 A CN 202310767067A CN 116559002 A CN116559002 A CN 116559002A
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- elastic hammer
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- 238000001514 detection method Methods 0.000 title claims abstract description 24
- 230000000903 blocking effect Effects 0.000 claims abstract description 32
- 230000007246 mechanism Effects 0.000 claims abstract description 28
- 230000009471 action Effects 0.000 claims abstract description 19
- 238000006073 displacement reaction Methods 0.000 claims abstract description 10
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 9
- 238000012360 testing method Methods 0.000 claims abstract description 3
- 230000005540 biological transmission Effects 0.000 claims description 63
- 210000000078 claw Anatomy 0.000 claims description 33
- 238000004804 winding Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 8
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 3
- 239000004519 grease Substances 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
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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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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0032—Generation of the force using mechanical means
- G01N2203/0039—Hammer or pendulum
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0076—Hardness, compressibility or resistance to crushing
- G01N2203/0083—Rebound strike or reflected energy
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to the technical field of engineering monitoring, in particular to a concrete strength detection device, which comprises a rebound mechanism and a stabilizing mechanism, wherein the rebound mechanism comprises a shell, an elastic hammer and a rebound assembly, a blocking surface is arranged in the shell, the elastic hammer impacts the blocking surface under the action of the rebound assembly, and the maximum displacement of the elastic hammer moving in the direction away from the blocking surface after the elastic hammer impacts the blocking surface for the first time is the detection result; the stabilizing mechanism comprises a magnetic block, a closing coil and a trigger assembly, wherein the closing coil generates resistance to the movement of the magnetic block in the shell under the electrified state; the in-process of the direction to keeping away from the face is kept away from to the bullet hammer in the second time, and the magnetic path does not influence the bullet hammer and moves to the direction of keeping away from the face that keeps away from, guarantees the accuracy of testing result, and the magnetic path cooperates with the bullet hammer when the bullet hammer moves to being close to the face direction that keeps away from the second time, and the magnetic path produces the resistance to the removal of bullet hammer, reduces the invalid reciprocating motion of bullet hammer to reduce the frictional wear of resilient mechanism, prolong its life.
Description
Technical Field
The invention relates to the technical field of engineering monitoring, in particular to a concrete strength detection device.
Background
In the building detection process, the strength of the concrete is often required to be detected, and the detection mode adopted is mainly a rebound method, wherein the rebound method is to detect the outer layer of the concrete structure by adopting a rebound instrument, and the actual strength of the concrete is reflected by utilizing the rebound displacement of the rebound hammer. Since the impact hammer needs to move frequently in the resiliometer, the sliding resistance of the impact hammer rises with the use of the resiliometer, and the subsequent measurement accuracy can be affected. In the prior art, the invention patent with the publication number of CN110308062B discloses a resiliometer for engineering supervision, when a central guide rod stretches into a striking rod, a grease storage device is communicated with a channel, lubricating grease enters the central guide rod and lubricates the periphery of the central guide rod, and the resistance between a striking hammer (or a striking hammer) and a contact surface of the central guide rod is reduced.
Disclosure of Invention
The inventor found that the displacement amount of the hammer during the rebound process can reflect the actual strength only when the hammer rebounds for the first time, but the hammer can perform rebound vibration for a plurality of times under the action of the elastic member, and the rebound vibration is ineffective movement, so that unnecessary abrasion of the hammer is easy to be caused, thereby reducing the ineffective rebound path of the hammer and prolonging the service life of the hammer on the other hand.
The invention provides a concrete strength detection device, which aims to solve the problem that the service life is influenced by the easy abrasion of a spring hammer of the existing detection device.
The invention relates to a concrete strength detection device which adopts the following technical scheme:
a concrete strength detection device comprises a rebound mechanism and a stabilizing mechanism; the elastic mechanism comprises a shell, an elastic hammer and an elastic component, a blocking surface is arranged in the shell, the elastic hammer is slidably mounted on the shell, the elastic hammer impacts the blocking surface under the action of the elastic component, and the maximum displacement of the elastic hammer moving towards the direction away from the blocking surface after the elastic hammer impacts the blocking surface for the first time is the detection result; the movement of the hammer within the housing has an initial position and a trigger position; when the spring hammer is in the initial position, the spring hammer is abutted with the stop surface, and the trigger position is positioned on one side of the initial position, which is far away from the stop surface; the direction of the moving of the elastic hammer from the initial position to the trigger position is a first direction, and the direction of the moving of the elastic hammer from the trigger position to the initial position is a second direction; the stabilizing mechanism comprises a magnetic block, a closing coil and a trigger assembly, and the closing coil is wound in the shell; the magnetic block is slidably arranged in the shell along the moving direction of the elastic hammer and positioned in the inner ring of the closed coil, and the closed coil generates resistance to the movement of the magnetic block in the shell under the electrified state; the magnetic block can stretch out and draw back along the radial direction of the first direction, and have and stretch out the state and shrink the state, the magnetic block cooperates with the elastic hammer in the state of stretching out, the magnetic block moves along the second direction and allows the elastic hammer to move along the first direction beyond the magnetic block with the elastic hammer synchronously; when the elastic hammer is at the initial position, the triggering component enables the magnetic block to be in an extending state, and when the elastic hammer is at the triggering position, the triggering component enables the magnetic block to be in a contracting state; one end of the elastic hammer, which is close to the stop surface, is provided with a stop block, and in an initial state, the magnetic block is in an extending state, and when the elastic hammer moves from the initial position to the triggering position for the first time, the elastic hammer pushes the magnetic block to synchronously move through the stop block.
Further, a sliding plate is arranged in the shell, the sliding plate is slidably arranged in the shell along the moving direction of the elastic hammer, and the shell limits the sliding plate to move along the radial direction of the first direction; the sliding plate is connected with the magnetic block through a tension spring, and the tension spring is arranged along the radial direction of the first direction, so that the magnetic block can stretch and retract in the radial direction of the first direction.
Further, the triggering component comprises a push rod, a first push block, a second push block, a first transmission block and a second transmission block; the ejector rod is arranged along the moving direction of the elastic hammer, a plurality of ejector blocks are fixedly arranged on the ejector rod, the length direction of each ejector block is perpendicular to the axis of the ejector rod, the length of each ejector block is larger than the diameter of the ejector rod, and the ejector blocks are pushed to extend when rotating along with the ejector rod to the radial direction of the elastic hammer, so that the magnetic blocks are in an extending state; when the ejector block rotates to the tangential direction along the elastic hammer, the magnetic block contracts under the action of the tension spring, so that the magnetic block is in a contracted state; the two ends of the ejector rod are respectively provided with a semi-cylinder, and the planes of the two semi-cylinders are mutually perpendicular; the first transmission block and the second transmission block are both slidably arranged in the shell along the radial direction of the first direction, the first transmission block is positioned at one end of the ejector rod close to the stop surface, and the second transmission block is positioned at one end of the ejector rod far away from the stop surface; one end of the first transmission block and one end of the second transmission block, which are close to the ejector rod, are respectively provided with a guide inclined plane, the guide inclined planes are used for being abutted with the plane of the semi-cylinder, and the abutting positions are positioned at the eccentric positions of the semi-cylinder so as to push the plane of the semi-cylinder to rotate the ejector rod when the first transmission block or the second transmission block moves towards the direction close to the ejector rod; when the first transmission block and the second transmission block push the ejector rod, the rotation directions of the ejector rod are opposite; the first push block is slidably arranged on the blocking surface along the moving direction of the elastic hammer, the second push block is slidably arranged on the inner wall of the shell along the moving direction of the elastic hammer, and the second push block is positioned on one side of the magnetic block away from the blocking surface; the contact surface of the first pushing block and the first transmission block is an inclined surface so as to push the first transmission block to move towards the direction close to the ejector rod when the first pushing block moves towards the direction close to the stop surface; the contact surface of the second pushing block and the second transmission block is also an inclined surface so as to push the second transmission block to move towards the direction close to the ejector rod when the second pushing block moves towards the direction away from the stop surface; when the elastic hammer pushes the magnetic block to move to the triggering position through the stop block, the magnetic block pushes the second pushing block, and the second pushing block pushes the second transmission block to move, so that the ejector rod drives the ejector block to rotate, and the magnetic block is in a contracted state; the first pushing block is pushed at the initial position when the elastic hammer moves along the second direction for the first time and impacts the blocking surface, so that the first pushing block pushes the first transmission block to move, and then the ejector rod drives the ejector block to rotate, so that the magnetic block is in an extending state, and resistance is increased to the movement of the elastic hammer along the second direction for the second time.
Further, a ratchet is arranged on one side, close to the bouncing hammer, of the magnetic block, a clamping block is arranged on the side, close to the magnetic block, of the bouncing hammer, a torsion spring is arranged between the clamping block and the bouncing hammer in a rotating mode, and one side face of the clamping block is abutted to the bouncing hammer through the torsion spring; the ratchet is matched with the clamping block in the extending state of the magnetic block, and when the elastic hammer moves along the first direction, the clamping block rotates to pass through the ratchet under the pushing of the ratchet, so that the elastic hammer can move beyond the magnetic block; when the elastic hammer moves along the second direction, one side surface of the clamping block is abutted with the elastic hammer to prevent the clamping block from further rotating, and the clamping block drives the magnetic block to synchronously move by pushing the ratchet.
Further, the magnetic blocks are distributed uniformly around the circumferential direction of the elastic hammer, and the corresponding triggering components are distributed in a plurality.
Further, an annular wire slot coaxial with the elastic hammer is arranged in the shell, and the wire slot is positioned on one side of the ejector rod away from the magnetic block; the closed coil is formed by winding ductile metal wires, is positioned in the annular wire slot, one end of the closed coil is fixedly connected with the side wall of the annular wire slot, and the other end of the closed coil freely stretches in the annular wire slot.
Further, the rebound mechanism further comprises an impact rod, a central guide rod, a claw disc, a first elastic piece, a second elastic piece and a third elastic piece; the two ends of the shell in the first direction are respectively a head end and a tail end, the central guide rod and the flicking rod are coaxial and connected through a first elastic piece, are both arranged along the first direction and are both arranged on the shell in a sliding manner along the axial direction of the first elastic piece, and the flicking rod extends out of the head end of the shell and is used for being abutted against a building surface to be tested; the elastic hammer is sleeved outside the central guide rod in a sliding manner, and one end of the elastic hammer, which is close to the stop surface, is connected with the inside of the head end of the shell through a second elastic piece; the claw disc is connected with the central guide rod and is positioned at one side of the elastic hammer far away from the blocking surface, the claw disc is connected with the inside of the tail end of the shell through a third elastic piece, the claw disc is hinged with a claw for being clamped with the elastic hammer, and the third elastic piece enables the claw disc to be abutted with the elastic hammer, so that the claw is clamped with the elastic hammer; when the center guide rod moves to push the claw disc to be abutted with the tail end of the shell along the first direction, the claw is separated from the elastic hammer, so that the elastic hammer moves to strike the stop surface along the second direction under the action of the second elastic piece.
The beneficial effects of the invention are as follows: according to the concrete strength detection device, the elastic hammer moves in the first direction for rebound after impacting the blocking surface for the first time, and in the process of moving away from the blocking surface for the second time, the magnetic block is in an extending state but does not influence the movement of the elastic hammer in the direction away from the blocking surface, so that the accuracy of a detection result is ensured, when the elastic hammer moves towards the direction close to the blocking surface for the second time, the magnetic block is matched with the elastic hammer, the movement of the magnetic block in the shell is generated through the closing coil, the movement of the elastic hammer is further generated, the ineffective reciprocating movement of the elastic hammer under the action of the rebound component is reduced, the friction and abrasion of the rebound mechanism are reduced, and the service life of the rebound mechanism is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic view showing the overall structure of an embodiment of a concrete strength detecting apparatus according to the present invention;
FIG. 2 is a cross-sectional view showing the overall structure of an embodiment of a concrete strength detecting apparatus according to the present invention;
FIG. 3 is an enlarged schematic view of FIG. 2 at A;
FIG. 4 is a schematic cross-sectional view showing the overall structure of an embodiment of a concrete strength detecting apparatus according to the present invention;
FIG. 5 is an enlarged schematic view of FIG. 4 at B;
FIG. 6 is an enlarged schematic view of FIG. 4 at C;
FIG. 7 is a schematic view of a part of a rebound mechanism in an embodiment of a concrete strength detecting device according to the present invention;
FIG. 8 is an enlarged schematic view of FIG. 7 at D;
FIG. 9 is a schematic view showing a connection state of a magnetic block and a sliding plate in an embodiment of a concrete strength detecting apparatus according to the present invention;
FIG. 10 is a schematic view of a magnetic block and trigger assembly in an embodiment of a concrete strength detecting device according to the present invention;
in the figure: 110. a housing; 111. a stop surface; 112. a sliding plate; 113. a tension spring; 114. an annular wire slot; 115. a chute; 117. an avoidance groove; 118. a mating hole; 119. a locking button; 120. a flick rod; 130. a center guide rod; 140. a spring hammer; 141. a stop block; 142. a clamping block; 150. a claw disc; 160. a first elastic member; 170. a second elastic member; 180. a third elastic member; 200. a stabilizing mechanism; 210. a magnetic block; 211. a ratchet; 220. closing the coil; 230. a trigger assembly; 231. a push rod; 232. a first push block; 233. a second push block; 234. a first transmission block; 235. a second transmission block; 236. and (5) a top block.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
An embodiment of a concrete strength testing device of the present invention, as shown in fig. 1-10, includes a rebound mechanism and a stabilizing mechanism 200.
The rebound mechanism comprises a shell 110, a rebound hammer 140 and a rebound component, wherein a blocking surface 111 is arranged in the shell 110, the rebound hammer 140 is slidably mounted in the shell 110, the rebound hammer 140 impacts the blocking surface 111 under the action of the rebound component, and the maximum displacement of the rebound hammer moving away from the blocking surface 111 after impacting the blocking surface 111 for the first time is the detection result.
Movement of the hammer 140 within the housing 110 has an initial position and a trigger position; in the initial position, the elastic hammer 140 is abutted against the stop surface 111, the trigger position is positioned on one side of the initial position away from the stop surface 111, and the distance between the trigger position and the initial position is larger than the maximum displacement of the elastic hammer 140 moving in the direction away from the stop surface 111; the direction in which the hammer 140 moves from the initial position to the trigger position is a first direction, and the direction in which the hammer moves from the trigger position to the initial position is a second direction.
The stabilizing mechanism 200 comprises a magnetic block 210, a closing coil 220 and a triggering assembly 230, wherein the closing coil 220 is wound in the shell 110; the magnet 210 is slidably mounted in the housing 110 along the moving direction of the hammer 140 and is positioned at the inner ring of the closing coil 220, and the closing coil 220 generates resistance to the movement of the magnet 210 in the housing 110 in the energized state; wherein a power supply (not shown) for energizing the closing coil 220 is provided in the housing 110. The magnet 210 is retractable in a radial direction of the first direction, and has an extended state in which the magnet 210 is engaged with the hammer 140, and a retracted state in which the magnet 210 moves in the second direction in synchronization with the hammer 140 and allows the hammer 140 to move in the first direction beyond the magnet 210; the triggering assembly 230 puts the magnet 210 in an extended state when the hammer 140 is in the initial position, and the triggering assembly 230 puts the magnet 210 in a contracted state when the hammer 140 is in the triggered position.
The end of the hammer 140, which is close to the stop surface 111, is a first end, the end of the hammer 140, which is far away from the stop surface 111, is a second end, the first end of the hammer 140 is provided with a stop block 141, in an initial state, the magnet 210 is in an extended state, and when the hammer 140 moves from the initial position to the triggering position for the first time, the hammer 140 pushes the magnet 210 to synchronously move through the stop block 141; and the stop block 141 makes the first end of the damper 140 always located on the side of the magnetic block 210 near the stop surface 111.
Specifically, the impact stop surface 111 is moved in the second direction for the first time and then rebound in the first direction, and in the process of moving in the first direction for the second time, the magnet 210 is in an extended state but does not affect the movement of the impact hammer 140 in the first direction, so that accuracy of a detection result is ensured, and when the impact hammer 140 moves in the second direction for the second time, the magnet 210 is matched with the impact hammer 140, resistance is generated to the movement of the impact hammer 140, and ineffective reciprocating movement of the impact hammer 140 under the action of a rebound component is avoided.
In the present embodiment, a sliding plate 112 is provided in the housing 110, the sliding plate 112 is slidably mounted in the housing 110 along the moving direction of the hammer 140, and the housing 110 restricts the sliding plate 112 from moving in the radial direction of the first direction; specifically, the inner wall of the housing 110 is provided with a sliding slot 115 extending along a first direction, the magnetic block 210 is slidably mounted on the sliding slot 115, and a sliding plate slot is provided at the bottom of the sliding slot 115, the sliding plate 112 is slidably mounted in the sliding plate slot along the first direction, and the sliding plate slot limits the sliding plate 112 to move along the radial direction of the first direction. The sliding plate 112 is connected with the magnetic block 210 through a tension spring 113, and the tension spring 113 is arranged along the radial direction of the first direction, so that the magnetic block 210 can stretch in the radial direction of the first direction.
In this embodiment, the trigger assembly 230 includes a push rod 231, a first push block 232, a second push block 233, a first transmission block 234, and a second transmission block 235.
The push rod 231 is arranged along the moving direction of the elastic hammer 140 and is rotatably installed on the inner wall of the shell 110 around the axis of the push rod; the ejector rod 231 is fixedly provided with a plurality of ejector blocks 236, the length direction of the ejector blocks 236 is perpendicular to the axis of the ejector rod 231, the length of the ejector blocks is larger than the diameter of the ejector rod 231, and when the ejector rods 231 rotate to the radial direction of the elastic hammer 140, the magnetic blocks 210 are pushed to extend, so that the magnetic blocks 210 are in an extending state; when the top block 236 rotates to the tangential direction along the elastic hammer 140, the magnetic block 210 contracts under the action of the tension spring 113, so that the magnetic block 210 is in a contracted state; specifically, the inner wall of the housing 110 is further provided with a matching hole 118 for installing the ejector rod 231, the matching hole 118 is located on the side of the chute 115 away from the impact hammer 140, the ejector rod 231 rotates in the matching hole 118, and the matching hole 118 limits the ejector rod 231 to move along the axial direction thereof; the matching hole 118 is provided with an avoidance groove 117 communicated with the chute 115, and the ejector block 236 is positioned in the avoidance groove 117 and is used for abutting against the magnetic block 210. In order to avoid interference between the top block 236 and the sliding plates 112, two sliding plates 112 are correspondingly connected to each magnetic block 210, and are respectively located at two sides of the mating hole 118, the top block 236 rotates out from between the two sliding plates 112 to be abutted against the magnetic block 210.
Both ends of the push rod 231 are semicylindrical bodies, the two semicylindrical bodies are coaxial, and the planes of the two semicylindrical bodies are mutually perpendicular.
The first transmission block 234 and the second transmission block 235 are slidably mounted in the housing 110 along a radial direction of the first direction, the first transmission block 234 is located at one end of the push rod 231 near the stop surface 111, and the second transmission block 235 is located at one end of the push rod 231 far away from the stop surface 111. One end of the first transmission block 234 and one end of the second transmission block 235, which are close to the ejector rod 231, are respectively provided with a guide inclined plane, the guide inclined planes are used for being abutted with the plane of the semi-cylinder, and the abutting positions are positioned at the eccentric positions of the semi-cylinder, so that when the first transmission block 234 or the second transmission block 235 moves towards the direction close to the ejector rod 231, the plane of the semi-cylinder is pushed to enable the ejector rod 231 to rotate; when the first transmission block 234 and the second transmission block 235 push the push rod 231, the rotation directions of the push rod 231 are opposite; specifically, when the first transmission block 234 abuts against the plane of the half cylinder at one end of the push rod 231, the side surface of the second transmission block 235 abuts against the plane of the half cylinder at the other end of the push rod 231, and when the first transmission block 234 pushes the half cylinder at one end of the push rod 231 to rotate, the half cylinder at the other end of the push rod 231 pushes the second transmission block 235 to move in a direction away from the push rod 231 until the side surface of the first transmission block 234 abuts against the plane of the half cylinder at one end of the push rod 231, and the second transmission block 235 abuts against the plane of the half cylinder at the other end of the push rod 231.
The first push block 232 is slidably mounted on the blocking surface 111 along the moving direction of the hammer 140, the second push block 233 is slidably mounted on the inner wall of the casing 110 along the moving direction of the hammer 140, and the second push block 233 is located on one side of the magnetic block 210 away from the blocking surface 111; the contact surface of the first push block 232 and the first transmission block 234 is an inclined surface so as to push the first transmission block 234 to move towards the direction approaching the ejector rod 231 when the first push block 232 moves towards the direction approaching the stop surface 111; the contact surface between the second pushing block 233 and the second transmission block 235 is also an inclined surface, so that the second pushing block 233 is pushed to move towards the direction approaching the push rod 231 when moving towards the direction away from the stop surface 111. When the elastic hammer 140 pushes the magnetic block 210 to move to the triggering position through the stop block 141, the magnetic block 210 pushes the second push block 233, and the second push block 233 pushes the second transmission block 235 to move, so that the ejector rod 231 drives the ejector block 236 to rotate, and the magnetic block 210 is in a contracted state; when the elastic hammer 140 moves along the second direction for the first time and impacts the blocking surface 111, the first pushing block 232 is pushed at the initial position, so that the first pushing block 232 pushes the first transmission block 234 to move, and then the ejector rod 231 drives the ejector block 236 to rotate, the ejector block 236 pushes the magnetic block 210 to enable the magnetic block 210 to be in an extending state, and resistance is increased to the movement of the elastic hammer 140 along the second direction for the second time.
By arranging the first push block 232, the second push block 233, the first transmission block 234 and the second transmission block 235, the push rod 231 reciprocally rotates within a range of 90 degrees, and the magnetic block 210 is further switched to different states.
In this embodiment, a ratchet 211 is disposed on a side of the magnetic block 210 close to the damper 140, and a side of the ratchet 211 close to the stop surface 111 is an inclined surface, and a side far from the stop surface 111 is a straight surface perpendicular to the first direction. The side surface of the jump bit 140, which is close to the magnetic block 210, is provided with a clamping block 142, the clamping block 142 is rotatably arranged on the jump bit 140, a torsion spring is arranged between the clamping block 142 and the jump bit 140, and one side surface of the clamping block 142 is urged to be abutted with the jump bit 140 by the torsion spring; the ratchet 211 of the magnetic block 210 is matched with the clamping block 142 in the extending state, and when the impact hammer 140 moves along the first direction, the clamping block 142 rotates to pass through the ratchet 211 under the pushing of the inclined surface of the ratchet 211, so that the impact hammer 140 can move beyond the magnetic block 210; when the latch hammer 140 moves along the second direction, one side of the latch block 142 abuts against the latch hammer 140 to prevent the latch block 142 from further rotating, so that the latch block 142 drives the magnetic block 210 to move synchronously through the straight surface of the pushing ratchet 211. By providing the rotatable latch 142 to cooperate with the ratchet 211, it is possible to prevent the magnetic block 210 from affecting the movement of the hammer 140 in the first direction when in the extended state.
In this embodiment, there are a plurality of magnetic blocks 210, which are uniformly distributed around the circumference of the hammer 140, and there are a plurality of corresponding trigger components 230.
In this embodiment, an annular wire slot 114 coaxial with the damper 140 is provided inside the housing 110, and the annular wire slot 114 is located on the side of the ejector rod 231 away from the magnetic block 210; the closing coil 220 is formed by winding ductile wires, the closing coil 220 is positioned in the annular wire slot 114, one end of the closing coil is fixedly connected with the side wall of the annular wire slot 114, and the other end of the closing coil freely stretches in the annular wire slot 114. The closed coil 220 generates heat while generating resistance to the magnetic block 210 in the energized state, and the other end of the closed coil 220 can freely stretch and contract when being heated and expanded, thereby improving the heat dissipation effect.
In this embodiment, the rebound assembly includes a strike bar 120, a center guide bar 130, a knuckle plate 150, a first elastic member 160, a second elastic member 170, and a third elastic member 180.
The two ends of the shell 110 in the first direction are a head end and a tail end respectively, the central guide rod 130 and the flicking rod 120 are coaxial and connected through the first elastic piece 160, are both arranged along the first direction and are both axially and slidably arranged on the shell 110, and the flicking rod 120 extends out of the head end of the shell 110 and is used for being abutted with a position to be tested.
The elastic hammer 140 is slidably sleeved outside the central guide rod 130, and one end of the elastic hammer 140 close to the stop surface 111 is connected with the inside of the head end of the casing 110 through a second elastic member 170.
The claw disc 150 is connected with the central guide rod 130 and is positioned at one side of the elastic hammer 140 far away from the blocking surface 111, the claw disc 150 is connected with the inside of the tail end of the shell 110 through a third elastic piece 180, a claw for being clamped with the elastic hammer 140 is hinged on the claw disc 150, and the third elastic piece 180 promotes the claw disc 150 to be abutted with the elastic hammer 140, so that the claw is clamped with the elastic hammer 140; when the center guide rod 130 moves to push the claw disc 150 to abut against the tail end of the shell 110 along the first direction, the claw is separated from the hammer 140, so that the hammer 140 moves to strike the stop surface 111 along the second direction under the action of the second elastic member 170.
The shell 110 is further provided with a locking button 119, when the rebound mechanism is not used, the rebound mechanism pushes the striking rod 120 to retract into the shell 110, then presses the locking button 119 to lock the center guide rod 130, and when the rebound mechanism is required to be used, presses the locking button 119 to enable the center guide rod 130 and the striking rod 120 to extend out under the action of the first elastic piece 160, the second elastic piece 170 and the third elastic piece 180, the striking hammer 140 is located at an initial position under the action of the second elastic piece 170 and the third elastic piece 180, the magnetic block 210 is in a contracted state by pushing the first push block 232, and simultaneously the claw disc 150 is abutted with the striking hammer 140 under the action of the third elastic piece 180, and the claw is clamped with the striking hammer 140.
The rebound mechanism is a rebound apparatus in the prior art, and in this embodiment, the structure of the rebound mechanism is simply described, and the specific working principle thereof is not repeated.
When the concrete strength detection device is used, a power supply in the shell 110 is started to electrify the closing coil 220, the striking rod 120 is abutted to a position to be detected, the shell 110 is manually pressed to approach the position to be detected, the striking rod 120 pushes the center guide rod 130 to move along a first direction, the center guide rod 130 drives the striking hammer 140 to synchronously move along the first direction through the hook claw on the hook claw disk 150, the striking hammer 140 synchronously moves along the first direction through the stop block 141 when moving along the first direction, the striking hammer 140 moves to a triggering position, and the magnetic block 210 pushes the second push block 233 to enable the magnetic block 210 to be in a contracted state. The hammer 140 continues to move along the first direction under the driving of the central guide rod 130 until the claw disc 150 abuts against the tail end of the housing 110, the claw is separated from the hammer 140, and the hammer 140 moves along the second direction for the first time under the action of the second elastic member 170 to strike the stop surface 111. The housing 110 is kept pressed at this time until the hammer 140 displays the detection result. Specifically, when the impact hammer 140 impacts the stop surface 111, the first push block 232 is pushed to make the magnetic block 210 in an extended state, the impact hammer 140 impacts the stop surface 111 and rebounds, the impact hammer moves along the first direction for the second time, the maximum displacement of the movement is the rebound value of the position to be tested, and the clamping block 142 of the impact hammer 140 is rotated to avoid the ratchet 211 on the magnetic block 210 in the process of moving along the first direction for the second time, so that the rebound displacement of the impact hammer 140 is not affected by the magnetic block 210; after reaching the maximum rebound displacement, the hammer 140 moves along the second direction again, and drives the magnetic block 210 to move along the second direction through the cooperation of the clamping block 142 and the ratchet 211, the closing coil 220 causes resistance to the movement of the magnetic block 210, and further the speed of the hammer 140 moving along the second direction for the second time is slowed down, so that the hammer 140 does not rebound after hitting the stop surface 111 for the second time, the invalid movement path of the hammer 140 in the housing 110 is reduced, and further the friction wear of the hammer 140 is reduced. The closing coil 220 only generates resistance to the movement of the magnet block 210, and finally the hammer 140 returns to the initial position under the action of the second elastic member 170 and the third elastic member 180, and even if the hammer 140 rebounds again after hitting the stop surface 111 for the second time, the hammer 140 does not cross the magnet block 210 due to the action of the stopper 141, and the magnet block 210 provides resistance again when the hammer 140 moves in the second direction for the next time.
When a measurement of the next position is required, the housing 110 is released and the above operation is repeated again.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (7)
1. The utility model provides a concrete strength detection device which characterized in that: comprises a rebound mechanism and a stabilizing mechanism;
the elastic mechanism comprises a shell, an elastic hammer and an elastic component, a blocking surface is arranged in the shell, the elastic hammer is slidably mounted on the shell, the elastic hammer impacts the blocking surface under the action of the elastic component, and the maximum displacement of the elastic hammer moving towards the direction away from the blocking surface after the elastic hammer impacts the blocking surface for the first time is the detection result;
the movement of the hammer within the housing has an initial position and a trigger position; when the spring hammer is in the initial position, the spring hammer is abutted with the stop surface, and the trigger position is positioned on one side of the initial position, which is far away from the stop surface; the direction of the moving of the elastic hammer from the initial position to the trigger position is a first direction, and the direction of the moving of the elastic hammer from the trigger position to the initial position is a second direction;
the stabilizing mechanism comprises a magnetic block, a closing coil and a trigger assembly, and the closing coil is wound in the shell; the magnetic block is slidably arranged in the shell along the moving direction of the elastic hammer and positioned in the inner ring of the closed coil, and the closed coil generates resistance to the movement of the magnetic block in the shell under the electrified state; the magnetic block can stretch out and draw back along the radial direction of the first direction, and have and stretch out the state and shrink the state, the magnetic block cooperates with the elastic hammer in the state of stretching out, the magnetic block moves along the second direction and allows the elastic hammer to move along the first direction beyond the magnetic block with the elastic hammer synchronously; when the elastic hammer is at the initial position, the triggering component enables the magnetic block to be in an extending state, and when the elastic hammer is at the triggering position, the triggering component enables the magnetic block to be in a contracting state;
one end of the elastic hammer, which is close to the stop surface, is provided with a stop block, and in an initial state, the magnetic block is in an extending state, and when the elastic hammer moves from the initial position to the triggering position for the first time, the elastic hammer pushes the magnetic block to synchronously move through the stop block.
2. A concrete strength detection apparatus according to claim 1, wherein: the shell is internally provided with a sliding plate which is slidably arranged in the shell along the moving direction of the elastic hammer, and the shell limits the sliding plate to move along the radial direction of the first direction; the sliding plate is connected with the magnetic block through a tension spring, and the tension spring is arranged along the radial direction of the first direction, so that the magnetic block can stretch and retract in the radial direction of the first direction.
3. A concrete strength detecting apparatus according to claim 2, wherein: the triggering component comprises a push rod, a first push block, a second push block, a first transmission block and a second transmission block;
the ejector rod is arranged along the moving direction of the elastic hammer, a plurality of ejector blocks are fixedly arranged on the ejector rod, the length direction of each ejector block is perpendicular to the axis of the ejector rod, the length of each ejector block is larger than the diameter of the ejector rod, and the ejector blocks are pushed to extend when rotating along with the ejector rod to the radial direction of the elastic hammer, so that the magnetic blocks are in an extending state; when the ejector block rotates to the tangential direction along the elastic hammer, the magnetic block contracts under the action of the tension spring, so that the magnetic block is in a contracted state; the two ends of the ejector rod are respectively provided with a semi-cylinder, and the planes of the two semi-cylinders are mutually perpendicular;
the first transmission block and the second transmission block are both slidably arranged in the shell along the radial direction of the first direction, the first transmission block is positioned at one end of the ejector rod close to the stop surface, and the second transmission block is positioned at one end of the ejector rod far away from the stop surface; one end of the first transmission block and one end of the second transmission block, which are close to the ejector rod, are respectively provided with a guide inclined plane, the guide inclined planes are used for being abutted with the plane of the semi-cylinder, and the abutting positions are positioned at the eccentric positions of the semi-cylinder so as to push the plane of the semi-cylinder to rotate the ejector rod when the first transmission block or the second transmission block moves towards the direction close to the ejector rod; when the first transmission block and the second transmission block push the ejector rod, the rotation directions of the ejector rod are opposite; the first push block is slidably arranged on the blocking surface along the moving direction of the elastic hammer, the second push block is slidably arranged on the inner wall of the shell along the moving direction of the elastic hammer, and the second push block is positioned on one side of the magnetic block away from the blocking surface; the contact surface of the first pushing block and the first transmission block is an inclined surface so as to push the first transmission block to move towards the direction close to the ejector rod when the first pushing block moves towards the direction close to the stop surface; the contact surface of the second pushing block and the second transmission block is also an inclined surface so as to push the second transmission block to move towards the direction close to the ejector rod when the second pushing block moves towards the direction away from the stop surface; when the elastic hammer pushes the magnetic block to move to the triggering position through the stop block, the magnetic block pushes the second pushing block, and the second pushing block pushes the second transmission block to move, so that the ejector rod drives the ejector block to rotate, and the magnetic block is in a contracted state; the first pushing block is pushed at the initial position when the elastic hammer moves along the second direction for the first time and impacts the blocking surface, so that the first pushing block pushes the first transmission block to move, and then the ejector rod drives the ejector block to rotate, so that the magnetic block is in an extending state, and resistance is increased to the movement of the elastic hammer along the second direction for the second time.
4. A concrete strength detection apparatus according to claim 1, wherein: the side, close to the knocking hammer, of the magnetic block is provided with a ratchet, the side, close to the magnetic block, of the knocking hammer is provided with a clamping block, the clamping block is rotatably arranged on the knocking hammer and is provided with a torsion spring between the clamping block and the knocking hammer, and one side of the clamping block is abutted with the knocking hammer by the torsion spring; the ratchet is matched with the clamping block in the extending state of the magnetic block, and when the elastic hammer moves along the first direction, the clamping block rotates to pass through the ratchet under the pushing of the ratchet, so that the elastic hammer can move beyond the magnetic block; when the elastic hammer moves along the second direction, one side surface of the clamping block is abutted with the elastic hammer to prevent the clamping block from further rotating, and the clamping block drives the magnetic block to synchronously move by pushing the ratchet.
5. A concrete strength detection apparatus according to claim 1, wherein: the magnetic blocks are distributed uniformly around the circumferential direction of the elastic hammer, and the corresponding triggering components are multiple.
6. A concrete strength testing apparatus according to claim 3, wherein: an annular wire slot coaxial with the elastic hammer is arranged in the shell, and the wire slot is positioned at one side of the ejector rod away from the magnetic block; the closed coil is formed by winding ductile metal wires, is positioned in the annular wire slot, one end of the closed coil is fixedly connected with the side wall of the annular wire slot, and the other end of the closed coil freely stretches in the annular wire slot.
7. A concrete strength detection apparatus according to claim 1, wherein: the rebound mechanism further comprises an impact rod, a central guide rod, a claw disc, a first elastic piece, a second elastic piece and a third elastic piece;
the two ends of the shell in the first direction are respectively a head end and a tail end, the central guide rod and the flicking rod are coaxial and connected through a first elastic piece, are both arranged along the first direction and are both arranged on the shell in a sliding manner along the axial direction of the first elastic piece, and the flicking rod extends out of the head end of the shell and is used for being abutted against a building surface to be tested;
the elastic hammer is sleeved outside the central guide rod in a sliding manner, and one end of the elastic hammer, which is close to the stop surface, is connected with the inside of the head end of the shell through a second elastic piece;
the claw disc is connected with the central guide rod and is positioned at one side of the elastic hammer far away from the blocking surface, the claw disc is connected with the inside of the tail end of the shell through a third elastic piece, the claw disc is hinged with a claw for being clamped with the elastic hammer, and the third elastic piece enables the claw disc to be abutted with the elastic hammer, so that the claw is clamped with the elastic hammer; when the center guide rod moves to push the claw disc to be abutted with the tail end of the shell along the first direction, the claw is separated from the elastic hammer, so that the elastic hammer moves to strike the stop surface along the second direction under the action of the second elastic piece.
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| CN202310767067.7A CN116559002B (en) | 2023-06-27 | 2023-06-27 | Concrete strength detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117491203A (en) * | 2024-01-02 | 2024-02-02 | 山东佳邦机械设备有限公司 | Portable bridge check out test set |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1092038A (en) * | 1965-05-05 | 1967-11-22 | Zavoid Za Str Konstrukzii | Improved non-destructive hardness testing device |
| JP2004340745A (en) * | 2003-05-15 | 2004-12-02 | Akashi Corp | Impact hammer for rebounding type portable hardness meter |
| CN204630859U (en) * | 2015-04-28 | 2015-09-09 | 武汉市瑞坤经济发展有限责任公司 | 4.5 joules of high strength concrete resiliometers |
| CN106679912A (en) * | 2016-12-30 | 2017-05-17 | 长安大学 | Electromagnetic-driven lossless resiliometer and measuring method of the same |
| CN209589677U (en) * | 2019-01-22 | 2019-11-05 | 武宇生 | Multi-functional intensity reisilometer |
| CN210269476U (en) * | 2019-08-08 | 2020-04-07 | 王苏徽 | Electromagnetic reset resiliometer |
| CN111220450A (en) * | 2019-12-31 | 2020-06-02 | 云南大学 | Nondestructive detector for strength of lightweight aggregate concrete |
| CN112284947A (en) * | 2020-10-14 | 2021-01-29 | 刘太清 | Concrete resiliometer for building engineering |
| CN113654930A (en) * | 2021-09-06 | 2021-11-16 | 中国化学工程第三建设有限公司 | Electromagnetic power mortar resiliometer device |
| CN113670754A (en) * | 2021-09-06 | 2021-11-19 | 中国化学工程第三建设有限公司 | Electromagnetic power concrete quality detection resiliometer device |
| CN115520139A (en) * | 2022-10-31 | 2022-12-27 | 均胜均安汽车电子(上海)有限公司 | Locking device of safety belt coiler |
| CN116183415A (en) * | 2023-04-25 | 2023-05-30 | 河南金博文建设工程有限公司 | Rebound type hardness detection equipment |
-
2023
- 2023-06-27 CN CN202310767067.7A patent/CN116559002B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1092038A (en) * | 1965-05-05 | 1967-11-22 | Zavoid Za Str Konstrukzii | Improved non-destructive hardness testing device |
| JP2004340745A (en) * | 2003-05-15 | 2004-12-02 | Akashi Corp | Impact hammer for rebounding type portable hardness meter |
| CN204630859U (en) * | 2015-04-28 | 2015-09-09 | 武汉市瑞坤经济发展有限责任公司 | 4.5 joules of high strength concrete resiliometers |
| CN106679912A (en) * | 2016-12-30 | 2017-05-17 | 长安大学 | Electromagnetic-driven lossless resiliometer and measuring method of the same |
| CN209589677U (en) * | 2019-01-22 | 2019-11-05 | 武宇生 | Multi-functional intensity reisilometer |
| CN210269476U (en) * | 2019-08-08 | 2020-04-07 | 王苏徽 | Electromagnetic reset resiliometer |
| CN111220450A (en) * | 2019-12-31 | 2020-06-02 | 云南大学 | Nondestructive detector for strength of lightweight aggregate concrete |
| CN112284947A (en) * | 2020-10-14 | 2021-01-29 | 刘太清 | Concrete resiliometer for building engineering |
| CN113654930A (en) * | 2021-09-06 | 2021-11-16 | 中国化学工程第三建设有限公司 | Electromagnetic power mortar resiliometer device |
| CN113670754A (en) * | 2021-09-06 | 2021-11-19 | 中国化学工程第三建设有限公司 | Electromagnetic power concrete quality detection resiliometer device |
| CN115520139A (en) * | 2022-10-31 | 2022-12-27 | 均胜均安汽车电子(上海)有限公司 | Locking device of safety belt coiler |
| CN116183415A (en) * | 2023-04-25 | 2023-05-30 | 河南金博文建设工程有限公司 | Rebound type hardness detection equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117491203A (en) * | 2024-01-02 | 2024-02-02 | 山东佳邦机械设备有限公司 | Portable bridge check out test set |
| CN117491203B (en) * | 2024-01-02 | 2024-03-22 | 山东佳邦机械设备有限公司 | Portable bridge check out test set |
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|---|---|
| CN116559002B (en) | 2023-11-07 |
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