CN116625862B - Concrete member hardness detection device - Google Patents
Concrete member hardness detection device Download PDFInfo
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- CN116625862B CN116625862B CN202310889348.XA CN202310889348A CN116625862B CN 116625862 B CN116625862 B CN 116625862B CN 202310889348 A CN202310889348 A CN 202310889348A CN 116625862 B CN116625862 B CN 116625862B
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- 238000001514 detection method Methods 0.000 title claims abstract description 18
- 230000002093 peripheral effect Effects 0.000 claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims description 40
- 238000007542 hardness measurement Methods 0.000 claims description 3
- 238000004146 energy storage Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 12
- 230000009471 action Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000001308 synthesis method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification 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
- G01N2203/0058—Kind of property studied
- G01N2203/0076—Hardness, compressibility or resistance to crushing
- G01N2203/0083—Rebound strike or reflected energy
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- 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 application provides a concrete member hardness detection device which comprises a fixed frame and a sleeve, wherein the fixed frame is provided with an oval outline shape, a rebound rod is elastically connected in the sleeve along the axial direction of the sleeve, the fixed frame is sleeved on a columnar concrete member, the sleeve is arranged at one end of a long shaft of the fixed frame, the other end of the long shaft of the fixed frame is rotatably provided with an arc-shaped block, and the arc-shaped block is always attached to the peripheral wall of the columnar concrete member. The application sets the fixed frame, the arc block and the sleeve, because the device uses the connection point of the arc block and the fixed frame as a rotating fulcrum when in use, uses the sum of the lengths of the sleeve and the rebound rod as a force arm, and the force arm is vertical to the direction of the force, the rebound rod is driven to overcome the elastic acting force of the spring by maximizing the moment to move in the direction away from the columnar concrete member, compared with the existing rebound instrument, the device saves more labor when in realizing the energy storage of the spring, and therefore, the physical consumption of the detection personnel is smaller.
Description
Technical Field
The application relates to the field of hardness detection, in particular to a device for detecting the hardness of a concrete member.
Background
After the concrete member is cast at a certain height, the hardness of the concrete member needs to be detected in time in order to ensure the construction quality. There are many methods for detecting the hardness of concrete, such as a core drilling method, a drawing method, an indentation method, a shooting method, a rebound method, an ultrasonic method, a rebound ultrasonic synthesis method, an ultrasonic attenuation synthesis method, a ball falling method and the like, wherein the rebound method is the most widely applied nondestructive detection method.
The instrument used for detecting the hardness of the concrete by the rebound method is a concrete rebound instrument. The application patent with the publication number of CN110308062B discloses a rebound instrument for engineering supervision, when the rebound instrument is used, the rebound instrument is required to be aligned with a concrete member to be detected, so that a rebound rod of the rebound instrument is abutted against the concrete member, then a sleeve of the rebound instrument is held by hands and pressed with force so that a spring connected with the rebound rod in the sleeve is at the maximum compression, then elastic potential energy of the spring is released, the rebound rod is driven to impact on the concrete member by spring reset, and the rebound distance of the rebound rod is measured to detect the hardness of the concrete member. Since the hardness of the concrete member is detected many times, it is very labor-intensive for the inspector to frequently press the sleeve of the resiliometer. In addition, under certain working conditions, the concrete member is in a column shape, so that the detection hardness value of the detection point of the concrete member is more accurate, the sleeve is required to be used obliquely to the concrete member, so that point contact between the rebound rod and the concrete member is ensured, and in such a case, the detection personnel can press the sleeve to realize energy storage of the spring more conveniently.
Disclosure of Invention
Accordingly, it is necessary to provide a concrete member hardness detection device that can greatly reduce the physical effort of a detection person in use and can conveniently realize the energy storage of a spring when a concrete member is a columnar body, in order to solve the problems of the conventional rebound apparatuses.
The above purpose is achieved by the following technical scheme:
the device comprises a fixed frame and a sleeve, wherein the fixed frame is provided with an oval outline, a rebound rod is elastically connected in the sleeve along the axial direction of the fixed frame, the fixed frame is sleeved on the columnar concrete member, the sleeve is arranged at one end of a long shaft of the fixed frame, the other end of the long shaft of the fixed frame is rotatably provided with an arc-shaped block, and the arc-shaped block is always attached to the peripheral wall of the columnar concrete member;
the fixed frame can rotate on the outer peripheral surface of the columnar concrete member by taking the connection point of the fixed frame and the arc-shaped block as a rotation center, the fixed frame is provided with a rotation initial state and a rotation end state, the fixed frame can rotate from the rotation initial state to the rotation end state by taking the arc-shaped block as the rotation center, when the fixed frame is in the rotation initial state, the included angle value between the long axis of the fixed frame and the section perpendicular to the concrete axis is zero, and the rebound rod is in contact with the columnar concrete member but has no pressure; when the fixed frame is in a rotation termination state, the included angle value between the long axis of the fixed frame and the section perpendicular to the concrete axis is a preset value, and the rebound rod is compressed to a minimum extension state.
In one embodiment, a locking component is arranged between the fixed frame and the arc-shaped block, and when the fixed frame rotates to a rotation end state, the locking component can limit the included angle value between the long axis of the fixed frame and the cross section of the columnar concrete member to be continuously increased.
In one embodiment, the locking assembly comprises an upper baffle, an inclined plane and a straight plane, the inner peripheral wall of the fixed frame is provided with a straight notch, the arc-shaped block is rotationally arranged in the straight notch, the upper baffle is arranged on one side surface of the fixed frame and is positioned at the bottom of the straight notch, the side surface of the arc-shaped block, which is close to the bottom of the straight notch, comprises the straight plane and the inclined plane which are connected, when the fixed frame rotates from the initial rotation state to the end rotation state, the straight plane is separated from the bottom of the straight notch, and the edge formed by the straight plane and the other peripheral wall surface of the arc-shaped block is in butt joint with the upper baffle.
In one embodiment, an adjusting mechanism is arranged between one end of a long shaft of the fixed frame and the sleeve, the adjusting mechanism comprises an adjusting sliding rail and an adjusting jackscrew, the adjusting sliding rail is arranged on the peripheral wall of the sleeve, one end of the fixed frame, which is close to the long shaft of the sleeve, is provided with an opening, the position of the opening of the fixed frame can slide along the adjusting sliding rail, a threaded through hole is formed in the position of the fixed frame, which is close to the opening, and the adjusting jackscrew is in threaded connection with the threaded through hole.
In one embodiment, a traction mechanism is arranged in the sleeve, the rebound rod is elastically connected with the sleeve through the traction mechanism, the traction mechanism can slide along the axis of the sleeve, the traction mechanism comprises a traction rod, the traction rod is sleeved with the rebound rod, a thrust reverser is sleeved outside the traction rod, the thrust reverser comprises an annular thrust reverser, the annular thrust reverser is sleeved on the peripheral wall of the traction rod, and the annular thrust reverser is elastically connected with one end of the sleeve, which is close to the columnar concrete member;
a lock catch assembly is arranged between the annular reverse pushing block and the traction rod, and the traction rod can drive the annular reverse pushing block to synchronously move through the lock catch assembly before the traction rod moves to a preset position in the sleeve in a direction away from the columnar concrete member;
an unlocking component is further arranged in the sleeve, and after the traction rod moves to a preset position in the sleeve in a direction away from the columnar concrete member, the unlocking component can be matched with the locking component to drive the traction rod and the annular reverse pushing block to be separated;
the sleeve is internally provided with a locking mechanism, and when the traction rod is separated from the annular reverse pushing block, the traction rod can be locked at a preset position by the locking mechanism;
the display mechanism is further arranged in the sleeve, the display mechanism comprises a graduated scale and a graduated dial, the graduated scale is arranged on the sleeve, the graduated direction of the graduated scale is parallel to the axis of the sleeve, the graduated dial is arranged on the sleeve in a sliding manner, the graduated dial can move along the axis of the sleeve, and when the annular reverse pushing block moves in the direction away from the columnar concrete member, the annular reverse pushing block can push the graduated dial to move synchronously.
In one embodiment, the latch assembly comprises an L-shaped hook, the L-shaped hook is rotatably arranged on the traction rod, and when the traction rod moves to a preset position in the sleeve, the L-shaped hook can rotate a preset angle in a direction away from the annular reverse thrust block so that the traction rod is separated from the annular reverse thrust block.
In one embodiment, the unlocking component comprises an arc-shaped top block, the arc-shaped top block is arranged at one end of the sleeve, which is far away from the columnar concrete member, and when the traction rod moves to a preset position, the arc-shaped top block can be matched with the L-shaped hook to drive the L-shaped hook to rotate for a preset angle in a direction far away from the annular reverse pushing block.
In one embodiment, the locking mechanism comprises a locking rod and a locking groove, the locking rod is arranged on the L-shaped hook, the locking groove is formed in the inner wall of the sleeve, and the locking rod can be screwed into the locking groove after the L-shaped hook rotates by a preset angle so as to lock the traction rod at a preset position.
In one embodiment, the locking groove is internally provided with a reset mechanism, the reset mechanism comprises a reset pressing block and a reset inclined block, the reset inclined block is fixedly connected with the reset pressing block, the reset pressing block is elastically connected in the locking groove, and when the locking rod is screwed into the locking groove, the reset pressing block can be pressed to enable the locking rod to be separated from the locking groove.
In one embodiment, a return spring is arranged at one end, far away from the columnar concrete member, in the sleeve, and the return spring is used for returning the scale shifting sheet to the zero scale position of the scale after the scale shifting sheet moves to the maximum scale position of the scale.
The beneficial effects of the application are as follows:
the application is provided with the fixed frame, the arc-shaped block and the sleeve, and the device uses the connecting point of the arc-shaped block and the fixed frame as a rotating fulcrum when in use, uses the sum of the lengths of the sleeve and the rebound rod as a force arm, and the force arm is vertical to the direction of the force, so that the rebound rod can be driven to move away from the columnar concrete member by overcoming the elastic force of the spring through the maximized moment.
Drawings
FIG. 1 is a schematic diagram showing the overall structure of a device for detecting the hardness of a concrete member according to the present application;
FIG. 2 is an enlarged schematic view of the structure of FIG. 1A;
FIG. 3 is a schematic top view of a device for detecting the hardness of a concrete member according to the present application;
FIG. 4 is a schematic view of the structure of section B-B in FIG. 3;
FIG. 5 is an enlarged schematic view of the structure of FIG. 4 at C;
FIG. 6 is a schematic view showing the abutting engagement of an arc block and an upper baffle in a concrete member hardness testing device according to the present application;
FIG. 7 is a schematic side view of a device for detecting hardness of a concrete member according to the present application;
FIG. 8 is a schematic view of the structure of section D-D in FIG. 7;
FIG. 9 is an enlarged schematic view of the structure of FIG. 8 at E;
FIG. 10 is an enlarged schematic view of the structure at F in FIG. 8;
FIG. 11 is a schematic view showing the structure of a device for detecting the hardness of a concrete member in an initial state of rotation according to the present application;
fig. 12 is a schematic view showing a structure of a rotation termination state of the apparatus for detecting hardness of a concrete member according to the present application.
Wherein:
100. a columnar concrete member; 200. a fixed frame; 210. an arc-shaped block; 211. a bevel plane; 212. a straight plane; 220. a straight slot; 230. a fixed rod; 240. an upper baffle; 300. a sleeve; 310. a rebound bar; 311. a blind hole; 320. an arc-shaped top block; 330. a straight line chute; 340. a tension spring; 350. a tail part is screwed on the cover; 360. the head is connected with the convex ring; 370. a waist stop collar; 400. an adjusting mechanism; 410. adjusting the sliding rail; 420. adjusting the jackscrews; 430. a threaded through hole; 500. a pulling mechanism; 510. a pulling rod; 520. pulling the ring; 530. a pressure spring; 600. a thrust reverser; 610. an annular reverse pushing block; 620. a profiled block; 700. an L-shaped hook; 800. a locking mechanism; 810. a locking lever; 820. a locking groove; 900. a display mechanism; 910. a graduated scale; 920. a scale dial; 930. a guide rod; 940. a return spring; 1000. a reset mechanism; 1010. resetting the pressing block; 1020. resetting the sloping block.
Detailed Description
The present application will be further described in detail below with reference to examples, which are provided to illustrate the objects, technical solutions and advantages of the present application. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
The numbering of components herein, such as "first," "second," etc., is used merely to distinguish between the described objects and does not have any sequential or technical meaning. The term "coupled" as used herein includes both direct and indirect coupling (coupling), unless otherwise indicated. In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
As shown in fig. 1 to 12, a concrete member hardness testing apparatus for testing the hardness of a columnar concrete member 100 includes a fixing frame 200 and a sleeve 300, the fixing frame 200 having an oval profile, a rebound rod 310 being elastically connected in the sleeve 300 along its axial direction, the fixing frame 200 being fitted over the columnar concrete member 100, the sleeve 300 being provided at one end of the long axis of the fixing frame 200, the other end of the long axis of the fixing frame 200 being rotatably provided with an arc-shaped block 210, the arc-shaped block 210 being always fitted to the outer peripheral wall of the columnar concrete member 100. When detecting the columnar concrete member 100, as shown in fig. 10, a detecting person first covers the fixed frame 200 on the columnar concrete member 100 and makes the arc surface of the arc block 210 fit with the outer peripheral wall of the columnar concrete member 100, then makes the included angle value between the long axis of the fixed frame 200 and the cross section of the columnar concrete member 100 be zero, at this time, the fixed frame 200 is in a rotation initial state, and since the fixed frame 200 is in an oval outline shape, the rebound lever 310 is in a maximum extension state in the current state; next, the inspector rotates the fixing frame 200 with the connection point of the fixing frame 200 and the arc-shaped block 210 as a rotation center, so that the fixing frame 200 is rotated from a rotation initial state to a rotation end state; a specific inspector can press one end of the fixing frame 200 having the arc-shaped block 210 with one hand and push the sleeve 300 counterclockwise with the other hand in a direction perpendicular to the axis of the sleeve 300, thereby rotating the fixing frame 200 to a rotation end state shown in fig. 11, at which time the angle value between the long axis of the fixing frame 200 and the cross section of the columnar concrete member 100 is a preset value, and the rebound rod 310 is compressed to a minimum extension state by the columnar concrete member 100. In the process of turning from the turning initial state shown in fig. 11 to the turning end state shown in fig. 12, since the device uses the connection point of the arc-shaped block 210 and the fixed frame 200 as a turning fulcrum, uses the sum of the lengths of the sleeve 300 and the rebound rod 310 as a force arm, and the force arm is perpendicular to the direction of force, the rebound rod 310 can be driven to move away from the columnar concrete member 100 by maximizing the force moment against the elastic force of the spring, compared with the prior art resiliometer, which requires a inspector to hold the sleeve 300 by hand and press the columnar concrete member 100 forcefully to realize the energy storage of the spring, the device is more labor-saving in realizing the energy storage of the spring, and therefore, the physical power consumption of the inspector is smaller.
It will be appreciated that when the fixed frame 200 is rotated to the state shown in fig. 12, at this time, the rebound lever 310 is compressed to the minimum extension state, and when the elastic potential energy of the spring connected to the rebound lever 310 is released, the rebound lever 310 collides against the columnar concrete member 100 at an angle inclined to the columnar concrete member 100, and at this time, the contact between the rebound lever 310 and the columnar concrete member 100 is in the form of point contact, so that the apparatus ensures that the detected hardness value is more accurate when detecting the detection point on the columnar concrete member 100.
It should be noted that the device can also be conveniently used for detecting the hardness of a columnar concrete member. At this time, the oval outline of the fixing frame 200 is only required to be replaced by a rectangular outline, and the arc-shaped block 210 is rotatably disposed at one side of the short side of the rectangle, and the sleeve 300 is disposed at the other side of the short side of the rectangle.
In a further embodiment, as shown in fig. 4, 5 and 6, a locking assembly is disposed between the fixed frame 200 and the arc-shaped block 210, and when the fixed frame 200 rotates to a rotation end state, the locking assembly locks the fixed frame 200, so that the angle value between the long axis of the fixed frame 200 and the cross section of the columnar concrete member 100 cannot be increased continuously, and at this time, the detection personnel only needs to keep the fixed frame 200 in a current inclined state, so that the device can automatically complete the detection of the hardness value of the current detection point of the columnar concrete member 100. Because the locking component is arranged, a detector does not need to mark the position of the included angle value between the long axis of the fixed frame 200 and the cross section of the columnar concrete member 100 in advance, and the use is convenient and efficient.
In a further embodiment, as shown in fig. 4, 5 and 6, the locking assembly comprises an upper baffle 240, an inclined plane 211 and a straight plane 212, one end of the fixed frame 200, which is close to the long axis of the arc-shaped block 210, is provided with a straight slot 220, a fixed rod 230 is arranged in the straight slot 220, the arc-shaped block 210 is rotatably arranged in the straight slot 220 by taking the fixed rod 230 as a rotation center, the upper baffle 240 is arranged on one side surface of the fixed frame 200 and is positioned at the bottom of the straight slot 220, and the side surface of the arc-shaped block 210, which is close to the bottom of the straight slot 220, comprises the straight plane 212 and the inclined plane 211 which are connected; when the fixed frame 200 is located at the rotation initial position, the straight plane 212 is in contact with the straight slot 220, and when the fixed frame 200 rotates from the rotation initial state to the rotation end state, the straight plane 212 is separated from the bottom of the straight slot 220, and the edge formed by the straight plane 212 and the other peripheral wall surface of the arc-shaped block 210 is abutted against the upper baffle 240, so that the fixed frame 200 cannot continue to rotate towards the direction approaching to the upper part of the columnar concrete member 100, and the fixed frame 200 is limited at the rotation end position and cannot continue to rotate upwards.
In a further embodiment, as shown in fig. 1 and 2, in order to enable the rebound rod 310 to be contacted with the columnar concrete member 100 without generating pressure when detecting the columnar concrete member 100 having different diameters, it is necessary to provide an adjusting mechanism 400 for adjusting the interval between the sleeve 300 and the outer circumferential wall of the columnar concrete member 100, the adjusting mechanism 400 includes an adjusting slide rail 410 and an adjusting jack 420, the adjusting slide rail 410 is provided on the outer circumferential wall of the sleeve 300, the fixing frame 200 has an opening near one end of the sleeve 300, the fixing frame 200 has an opening position to be slidable along the adjusting slide rail 410, the fixing frame 200 has a threaded through hole 430 near the opening position, and the adjusting jack 420 is screwed in the threaded through hole 430; when the interval between the adjustment sleeve 300 and the outer circumferential wall of the cylindrical concrete member 100 is adjusted, the inspector rotates the adjustment jackscrew 420 out of the threaded through hole 430, at this time, the adjustment jackscrew 420 is not abutted against the adjustment slide rail 410, so that the fixing frame 200 can slide along the adjustment slide rail 410, after the fixing frame 200 slides along the adjustment slide rail 410 until the rebound rod 310 contacts with the cylindrical concrete member 100 without generating pressure, the adjustment jackscrew 420 is screwed into the threaded through hole 430 and the adjustment jackscrew 420 abuts against the adjustment slide rail 410, so that the fixing frame 200 and the sleeve 300 remain fixed and cannot slide relatively, thereby ensuring that the angle value when the fixing frame 200 rotates to the rotation end state is always the same when the cylindrical concrete members 100 with different diameters are inspected, and therefore, the fixing frame 200 can not continue to rotate upwards through the locking assembly when the fixing frame 200 rotates to the rotation end state.
It will be appreciated that since the adjustment rail 410 is fitted along the outer tapered surface of the head of the sleeve 300, the fixing frame 200 needs to have elasticity in order to enable the fixing frame 200 to slide smoothly along the adjustment rail 410.
In one embodiment, as shown in fig. 3, 4 and 7-10, a pulling mechanism 500 is disposed in the sleeve 300, the rebound rod 310 is elastically connected with the sleeve 300 through the pulling mechanism 500, the elastic connection is specifically realized through a compression spring 530, the pulling mechanism 500 can slide along the axis of the sleeve 300, the pulling mechanism 500 includes a pulling rod 510, the pulling rod 510 is sleeved with the rebound rod 310, specifically, a blind hole 311 is disposed at one end of the rebound rod 310 far away from the columnar concrete member 100, the pulling rod 510 is inserted into the blind hole 311, a thrust reverser 600 is disposed at the outer portion of the pulling rod 510, the thrust reverser 600 includes an annular thrust reverser 610, the annular thrust reverser 610 is sleeved on the outer peripheral wall of the pulling rod 510, and the annular thrust reverser 610 is elastically connected with one end of the sleeve 300 near the columnar concrete member 100, specifically, the annular thrust reverser 610 is elastically connected with the sleeve 300 through a tension spring 340, a head connecting convex ring 360 can be disposed in the sleeve 300 for facilitating the connection 340, and one end of the head connecting convex ring 360 far away from the annular thrust reverser 610 is disposed on the head connecting convex ring 360.
A lock catch assembly is arranged between the annular reverse pushing block 610 and the traction rod 510, before the traction rod 510 moves to a preset position in the sleeve 300 in a direction away from the columnar concrete member 100, the traction rod 510 can drive the annular reverse pushing block 610 to synchronously move through the lock catch assembly, in order to conveniently install the lock catch assembly, one end of the traction rod 510 away from the rebound rod 310 is fixedly connected with a traction ring 520, the lock catch assembly is rotatably arranged on the traction ring 520, one end of the annular reverse pushing block 610 away from the columnar concrete member 100 is fixedly provided with a special-shaped block 620, the periphery of the special-shaped block 620 is provided with an annular notch, and the special-shaped block 620 and the annular reverse pushing block 610 can be driven to synchronously move with the traction rod 510 after the lock catch assembly is locked in the annular notch of the special-shaped block 620; the locking component can be any one of a magnetic locking device, a mechanical hook locking device or an electric control locking device.
An unlocking component is further arranged in the sleeve 300, and after the traction rod 510 moves to a preset position in the sleeve 300 in a direction away from the columnar concrete member 100, the unlocking component can be matched with the locking component to drive the traction rod 510 and the annular reverse pushing block 610 to be separated; the unlocking component corresponds to the magnetic lock catch and can be a demagnetizing block, corresponds to the mechanical hook type lock catch and can be a stop block, and corresponds to the electric control type lock catch and can be a trigger.
Also provided in the sleeve 300 is a locking mechanism 800, the locking mechanism 800 being capable of locking the pull rod 510 in a predetermined position when the pull rod 510 and the annular thrust reverser 610 are separated.
As shown in fig. 1, a display mechanism 900 is further disposed in the casing 300, the display mechanism 900 includes a scale 910 and a scale dial 920, a linear chute 330 is formed on the casing 300, a guide rod 930 is disposed in the linear chute 330 along a length direction thereof, the scale dial 920 is slidably connected to the guide rod 930, the scale 910 is disposed on an outer peripheral wall of the casing 300 and parallel to the length direction of the linear chute 330, and the outer peripheral diameter of the annular thrust reverser 610 is larger than one end of the scale dial 920 extending into the casing 300, so that the annular thrust reverser 610 and one end of the scale dial 920 extending into the casing 300 are mutually stopped, and when the annular thrust reverser 610 moves in a direction away from the columnar concrete member 100, the annular thrust reverser 610 can abut against the scale dial 920 to move synchronously. In the process that the fixed frame 200 rotates from the initial rotation state to the end rotation state, the rebound rod 310 moves away from the columnar concrete member 100 under the extrusion action of the columnar concrete member 100, so that the rebound rod 310 gradually retracts into the sleeve 300, the rebound rod 310 pushes the traction rod 510 to move synchronously along with the traction rod 510 through the blind hole 311, so that the traction rod 520 and the traction rod 510 move synchronously, the pressure spring 530 is gradually compressed, the traction rod 520 drives the annular thrust reverser 610 to move synchronously through the lock catch assembly and the annular thrust reverser 610, the tension spring 340 is gradually stretched, after the traction rod 520 and the annular thrust reverser 610 move to a preset position in the sleeve 300, the lock catch assembly cooperates with the unlocking assembly to enable the traction rod 520 and the annular thrust reverser 610 to be separated, at the moment, the traction rod 520 is fixed at the preset position, the annular thrust reverser 610 rapidly moves towards a direction close to the columnar concrete member 100 under the elastic action of the tension spring 340, the annular thrust reverser 610 is impacted on the rebound rod 310, after the traction rod 520 is impacted on the columnar concrete member 100, the rebound rod 310 is stressed and the rebound rod 310 moves to the annular thrust reverser 610 to the annular thrust reverser 920, and the hardness of the annular thrust reverser 920 can be judged when the rebound rod 610 moves to the annular thrust reverser 920. The larger the movement amount of the scale dial 920, the larger the hardness value of the columnar concrete member 100, and the smaller the movement amount of the scale dial 920, the smaller the hardness value of the columnar concrete member 100.
In a further embodiment, as shown in fig. 3, 4, 8 and 9, the latch assembly includes an L-shaped hook 700, and the L-shaped hook 700 is rotatably provided on the pulling rod 510, but for convenience of connection, the L-shaped hook 700 is rotatably provided on the pulling ring 520 in this embodiment, and when the pulling rod 510 and the pulling ring 520 are moved to a predetermined position in the sleeve 300, the L-shaped hook 700 is engaged with the unlocking assembly, so that the L-shaped hook 700 is rotated away from the annular thrust reverser 610 by a predetermined angle, and thus the L-shaped hook 700 is not hooked in the annular groove of the profiled block 620, and thus the pulling ring 520 can be separated from the annular thrust reverser 610 and the profiled block 620.
It should be further noted that, in order to enable the L-shaped hook 700 to automatically return after rotation, a spring, which is a scroll spring, is provided between the lower portion of the L-shaped hook 700 and the pulling ring 520.
It should be further added that, in order to enable the profiled block 620 and the pulling ring 520 to be automatically matched, one end of the profiled block 620 close to the pulling ring 520 needs to be an arc surface, so that when the pulling ring 520 moves towards the profiled block 620 under the elastic action of the pressure spring 530 after the pressure spring 530 is reset, the L-shaped hook 700 can enter into the annular groove to hook the profiled block 620 beyond the arc surface of the profiled block 620, and the pulling ring 520 and the profiled block 620 are locked.
It should be further noted that, to avoid sliding of the profiled block 620 and the annular thrust reverser 610 when the pulling ring 520 is in locking engagement with the profiled block 620, a waist blocking convex ring 370 is also required to be disposed at the waist position in the sleeve 300; when the pulling ring 520 moves in a direction approaching to the profiled block 620, the profiled block 620 cannot move, so that the pulling ring 520 can smoothly pass over the arc surface of the profiled block 620 to be locked with the profiled block 620.
In a further embodiment, as shown in fig. 8 and 9, the unlocking assembly includes an arc-shaped top block 320, the arc-shaped top block 320 is disposed at one end of the sleeve 300 far from the columnar concrete member 100, and when the pulling rod 510 moves to a preset position, the arc-shaped top block 320 abuts against the L-shaped hook 700 to drive the L-shaped hook 700 to rotate a preset angle in a direction far from the annular thrust block 610, so that the L-shaped hook 700 does not hook the profiled block 620 any more, thereby unlocking.
In a further embodiment, as shown in fig. 8, the locking mechanism 800 includes a locking lever 810 and a locking groove 820, the locking lever 810 is disposed on the L-shaped hook 700, the locking groove 820 is formed on the inner wall of the sleeve 300, and the locking lever 810 can be screwed into the locking groove 820 after the L-shaped hook 700 rotates by a preset angle to lock the pulling rod 510 at a preset position.
In a further embodiment, as shown in fig. 8 and 10, a reset mechanism 1000 is disposed in the locking slot 820, the reset mechanism 1000 includes a reset pressing block 1010 and a reset inclined block 1020, the reset inclined block 1020 is fixedly connected with the reset pressing block 1010, and the reset pressing block 1010 is connected in the locking slot 820 through a connecting spring; because the L-shaped hook 700 is matched with the arc-shaped top block 320, the L-shaped hook 700 rotates clockwise, when the locking rod 810 is screwed into the locking groove 820, the locking rod 810 rotates clockwise along with the L-shaped hook 700, so that the locking rod 810 extrudes the reset inclined block 1020, the reset inclined block 1020 is extruded to drive the reset pressing block 1010 to move upwards, a connecting spring connected with the reset pressing block 1010 is stretched, the reset pressing block 1010 protrudes from the locking groove 820, after detection is completed, a detection person presses the reset pressing block 1010 downwards by hand, the reset pressing block 1010 drives the reset inclined block 1020 to move downwards, the reset inclined block 1020 extrudes the locking rod 810, and accordingly the locking rod 810 and the L-shaped hook 700 are pushed out of the locking groove 820, at the moment, under the acting force of the pressure spring 530, the traction rod 510 and the traction ring 520 move towards the direction close to the columnar concrete member 100, and the traction ring 520 and the special-shaped block 620 are locked again through the L-shaped hook 700.
In a further embodiment, as shown in fig. 4, when the annular thrust reverser 610 moves to the preset position, the annular thrust reverser 610 also pushes the scale dial sheet 920 to move to the maximum scale position of the scale 910, and thereafter the annular thrust reverser 610 is reset to the position abutting against the waist stop convex ring 370 under the action of the tension spring 340; in order to ensure that the annular thrust reverser 610 can synchronously push the scale pulling sheet 920 to move when moving towards the direction far away from the columnar concrete member 100 again, a return spring 940 is also required to be arranged at one end, far away from the columnar concrete member 100, of the sleeve 300, and the scale pulling sheet 920 is pushed back to the zero scale position of the scale 910 through the return spring 940 after the scale pulling sheet 920 moves to the maximum scale position of the scale 910.
In a further embodiment, as shown in fig. 4, a tail screw cap 350 is screw-coupled to an end of the sleeve 300 remote from the columnar concrete member 100, and the tail screw cap 350 is provided for the purpose of facilitating installation of components in the sleeve 300 and maintenance when the portion in the sleeve 300 is damaged. For ease of installation, in this embodiment, an arcuate roof block 320 may be provided on the tail screw cap 350.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples illustrate only a few embodiments of the application and are described in detail herein without thereby limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (3)
1. A concrete member hardness detection apparatus for detecting hardness of a columnar concrete member, characterized by comprising:
the device comprises a fixed frame and a sleeve, wherein the fixed frame is provided with an oval outline shape, a rebound rod is elastically connected in the sleeve along the axial direction of the sleeve, the elastic connection is realized specifically through a pressure spring, the fixed frame is sleeved on a columnar concrete member, the sleeve is arranged at one end of a long shaft of the fixed frame, the other end of the long shaft of the fixed frame is rotatably provided with an arc-shaped block, and the arc-shaped block is always attached to the peripheral wall of the columnar concrete member;
the fixed frame can rotate on the outer peripheral surface of the columnar concrete member by taking the connection point of the fixed frame and the arc-shaped block as a rotation center, the fixed frame is provided with a rotation initial state and a rotation end state, the fixed frame can rotate from the rotation initial state to the rotation end state by taking the arc-shaped block as the rotation center, when the fixed frame is in the rotation initial state, the included angle value between the long axis of the fixed frame and the section perpendicular to the concrete axis is zero, and the rebound rod is in contact with the columnar concrete member but has no pressure; when the fixed frame is in a rotation termination state, the included angle value between the long axis of the fixed frame and the section perpendicular to the concrete axis is a preset value, and the rebound rod is compressed to a minimum extension state; a locking component is arranged between the fixed frame and the arc-shaped block, and after the fixed frame rotates to a rotation termination state, the locking component can limit the included angle between the long axis of the fixed frame and the cross section of the columnar concrete member to be continuously increased; the locking assembly comprises an upper baffle, an inclined plane and a straight plane, a straight notch is formed in the inner peripheral wall of the fixed frame, the arc-shaped block is rotatably arranged in the straight notch, the upper baffle is arranged on one side surface of the fixed frame and is positioned at the bottom of the straight notch, the side surface of the arc-shaped block, which is close to the bottom of the straight notch, comprises the straight plane and the inclined plane which are connected, when the fixed frame rotates from a rotation initial state to a rotation end state, the straight plane is separated from the bottom of the straight notch, and an edge formed by the straight plane and the other peripheral wall surface of the arc-shaped block is abutted against the upper baffle; an adjusting mechanism is arranged between one end of a long shaft of the fixed frame and the sleeve, the adjusting mechanism comprises an adjusting slide rail and an adjusting jackscrew, the adjusting slide rail is arranged on the peripheral wall of the sleeve, one end of the fixed frame, which is close to the long shaft of the sleeve, is provided with an opening, the position of the fixed frame, which is provided with the opening, can slide along the adjusting slide rail, a threaded through hole is arranged at the position of the fixed frame, which is close to the opening, and the adjusting jackscrew is in threaded connection with the threaded through hole; the traction mechanism comprises a traction rod, the traction rod is sleeved with a rebound rod, the traction rod can slide along the axis of the sleeve, an elastic piece is arranged between the traction rod and the sleeve, a thrust reverser is sleeved outside the traction rod, the thrust reverser comprises an annular thrust reverser, the annular thrust reverser is sleeved on the peripheral wall of the traction rod, and the annular thrust reverser is elastically connected with one end of the sleeve, which is close to the columnar concrete member;
a lock catch assembly is arranged between the annular reverse pushing block and the traction rod, and the traction rod can drive the annular reverse pushing block to synchronously move through the lock catch assembly before the traction rod moves to a preset position in the sleeve in a direction away from the columnar concrete member;
an unlocking component is further arranged in the sleeve, and after the traction rod moves to a preset position in the sleeve in a direction away from the columnar concrete member, the unlocking component can be matched with the locking component to drive the traction rod and the annular reverse pushing block to be separated;
the sleeve is internally provided with a locking mechanism, and when the traction rod is separated from the annular reverse pushing block, the traction rod can be locked at a preset position by the locking mechanism;
the display mechanism is further arranged in the sleeve and comprises a graduated scale and a graduated dial, the graduated scale is arranged on the sleeve, the graduated direction of the graduated scale is parallel to the axis of the sleeve, the graduated dial is arranged on the sleeve in a sliding manner and can move along the axis of the sleeve, and when the annular reverse pushing block moves in a direction away from the columnar concrete member, the annular reverse pushing block can push the graduated dial to move synchronously; the lock catch assembly comprises an L-shaped hook, the L-shaped hook is rotatably arranged on the traction rod, and when the traction rod moves to a preset position in the sleeve, the L-shaped hook can rotate a preset angle in a direction away from the annular reverse pushing block so that the traction rod is separated from the annular reverse pushing block; the unlocking assembly comprises an arc-shaped jacking block, the arc-shaped jacking block is arranged at one end of the sleeve, far away from the columnar concrete member, and when the traction rod moves to a preset position, the arc-shaped jacking block can be matched with the L-shaped hook to drive the L-shaped hook to rotate for a preset angle in a direction far away from the annular reverse pushing block; the locking mechanism comprises a locking rod and a locking groove, the locking rod is arranged on the L-shaped hook, the locking groove is formed in the inner wall of the sleeve, and the locking rod can be screwed into the locking groove after the L-shaped hook rotates by a preset angle so as to lock the traction rod at a preset position.
2. The device for detecting the hardness of a concrete member according to claim 1, wherein the locking groove is internally provided with a reset mechanism, the reset mechanism comprises a reset pressing block and a reset inclined block, the reset inclined block is fixedly connected with the reset pressing block, the reset pressing block is elastically connected in the locking groove, and when the locking rod is screwed into the locking groove, the reset pressing block can be pressed to enable the locking rod to be separated from the locking groove.
3. A concrete member hardness testing apparatus according to claim 2, wherein a return spring is provided at an end of the sleeve remote from the columnar concrete member, the return spring being adapted to return the scale paddle to its zero scale position after it has been moved to its maximum scale position.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310889348.XA CN116625862B (en) | 2023-07-20 | 2023-07-20 | Concrete member hardness detection device |
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| CN202310889348.XA CN116625862B (en) | 2023-07-20 | 2023-07-20 | Concrete member hardness detection device |
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| CN116625862B true CN116625862B (en) | 2023-09-26 |
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| CN117629757B (en) * | 2024-01-26 | 2024-04-23 | 山东中程试验检测有限公司 | Building main body structure detection device and detection method |
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