CN112557637B - Active powder concrete apron detection device - Google Patents
Active powder concrete apron detection device Download PDFInfo
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- CN112557637B CN112557637B CN202011369825.2A CN202011369825A CN112557637B CN 112557637 B CN112557637 B CN 112557637B CN 202011369825 A CN202011369825 A CN 202011369825A CN 112557637 B CN112557637 B CN 112557637B
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- 239000004567 concrete Substances 0.000 title claims abstract description 41
- 239000000843 powder Substances 0.000 title claims abstract description 40
- 238000001514 detection method Methods 0.000 title claims abstract description 35
- 238000003825 pressing Methods 0.000 claims abstract description 67
- 230000006835 compression Effects 0.000 claims abstract description 29
- 238000007906 compression Methods 0.000 claims abstract description 29
- 238000000429 assembly Methods 0.000 claims description 30
- 230000000712 assembly Effects 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 26
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims description 2
- 238000012360 testing method Methods 0.000 description 41
- 230000008569 process Effects 0.000 description 23
- 230000001360 synchronised effect Effects 0.000 description 8
- 230000005484 gravity Effects 0.000 description 5
- 230000006872 improvement Effects 0.000 description 4
- 239000011295 pitch Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 239000004574 high-performance concrete Substances 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass
- G01N33/383—Concrete or cement
-
- 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
-
- 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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- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses an active powder concrete cover plate detection device, wherein a frame assembly is used for providing support for the whole detection device; the supporting component is arranged in the middle of the frame component, and the jacking component is arranged at the lower part of the frame component and is positioned below the supporting surface; the pressing component is arranged on the upper part of the frame component in a sliding way, and is arranged on the frame component in a sliding way and positioned above the supporting surface; the compression assembly comprises a compression beam, a shaft body, a first backing plate and a tension spring; the pressing beam is in sliding connection with the frame assembly, and the upper end face of the pressing beam is in sliding fit with the upper side wall of the strip hole; the bottom of the pressing beam is provided with a first groove body; the top of the first backing plate is provided with a second groove body, and the first backing plate is connected with the second backing plate through a plurality of tension springs; the shaft body is rotatably arranged between the first groove body and the second groove body, and the diameter of the shaft body is larger than the sum of the depth of the first groove body and the depth of the second groove body. The invention can detect the crack resistance and bearing capacity of the active powder concrete cover plate.
Description
Technical Field
The invention relates to the technical field of active powder concrete cover plate detection, in particular to an active powder concrete cover plate detection device.
Background
The cable trough cover plate and the pavement plate are commonly made of high-performance concrete rectangular solid plates or Reactive Powder Concrete (RPC).
Concrete diseases such as corrosion of blocks, corrosion of reinforcing steel bars and easy breakage of plates are common in high-performance concrete rectangular solid plates. In addition, since the replacement method is adopted for the plates with serious diseases in many cases, the number of pavement plates used per year is huge.
The Reactive Powder Concrete (RPC) is formed by casting a mould at one time, and the construction process is perfect, simple and convenient, strong in operability and low in labor intensity; the technical proficiency of operators has little influence on the quality of the RPC cover plate, and the quality of the produced product is stable. The RPC material is fireproof, is not easy to corrode, has high compression resistance, shear strength, strong durability and high toughness, can adopt a thinner section to lighten dead weight in structural design, enriches shapes and increases attractive appearance.
With the large-scale use of cable groove cover plates and pedestrian boards, a large number of cable groove cover plates and pedestrian boards with different specifications and models appear on the market, and the existing instrument and equipment can not meet the detection work of various cable groove cover plates and pedestrian boards, so that the improvement work of the cable groove cover plate crack resistance and bearing capacity test detection device is indispensable.
Disclosure of Invention
The invention aims to provide an active powder concrete cover plate detection device which solves the defects in the prior art and can detect the crack resistance and the bearing capacity of an active powder concrete cover plate.
The invention provides an active powder concrete cover plate detection device, which comprises,
a frame assembly for providing support for the entire detection device;
the support component is arranged in the middle of the frame component so as to form a support surface in the horizontal direction; the middle part of the supporting component is provided with an avoidance hole;
the jacking component is arranged at the lower part of the frame component and positioned below the supporting surface, and is used for penetrating through the avoidance hole to drive the active powder concrete cover plate to be tested to move upwards;
the pressing component is arranged at the upper part of the frame component in a sliding manner, is arranged on the frame component in a sliding manner and is positioned above the supporting surface; the number of the compression assemblies is two;
wherein,
strip holes are formed in two opposite sides of the frame assembly;
the compression assembly comprises a compression beam, a shaft body, a first backing plate, a tension spring and a second backing plate;
the pressing beam is in sliding connection with the frame assembly, two ends of the pressing beam are positioned in the strip holes, and the upper end face of the pressing beam is in sliding fit with the upper side walls of the strip holes;
the bottom of the pressing beam is provided with a first groove body;
the top of the first backing plate is provided with a second groove body, and the first backing plate is connected with the second backing plate through a plurality of tension springs;
the shaft body is rotatably arranged between the first groove body and the second groove body, and the diameter of the shaft body is larger than the sum of the depth of the first groove body and the depth of the second groove body.
The active powder concrete cover plate detection device comprises a pressing assembly, wherein the pressing assembly comprises a first base plate, the first base plate is fixedly arranged at the bottom of the pressing assembly, and the first base plate is a wood plate.
The active powder concrete cover plate detection device as described above, wherein optionally, the support assembly is composed of a plurality of rotating shafts rotatably provided on the frame assembly;
the rotating shafts are tangential to the supporting surface, and the center line is positioned below the supporting surface;
the center line direction of the rotating shaft is perpendicular to the moving direction of the pressing assembly.
The reactive powder concrete cover plate detection device as described above, wherein optionally, the jacking assembly comprises a jack and a third backing plate;
the third base plate is fixedly arranged on the frame assembly and is positioned below the supporting surface;
the jack is arranged on the third backing plate through a positioning piece;
a cushion block is further arranged between the jack and the third base plate, and the cushion block is arranged through a positioning piece;
and arranging a plurality of cushion blocks according to sequence numbers with the thickness from small to large, wherein the thickness of any cushion block is 2 times of the thickness of the previous cushion block except the first cushion block.
The reactive powder concrete cover plate detection device as described above, wherein optionally, the reactive powder concrete cover plate detection device further comprises a first adjusting component;
the first adjusting assembly comprises a first adjusting rod, a first adjusting seat and a first adjusting hand wheel;
the first adjusting rod is provided with a first adjusting part and a second adjusting part along the length direction, the first adjusting part is provided with threads with a first rotation direction, the second adjusting part is provided with threads with a second rotation direction, and the first rotation direction is opposite to the second rotation direction;
both ends of the first adjusting rod are respectively connected with the two first adjusting seats on the frame assembly; the first adjusting rod passes through the two compression assemblies, and the first adjusting part and the second adjusting part are respectively in threaded connection with the two compression assemblies; the length direction of the first adjusting rod is the same as the sliding direction of the pressing component;
the first adjusting hand wheel is fixedly connected with one end of the first adjusting rod.
The active powder concrete cover plate detection device is characterized in that, optionally, fixed cross beams are arranged at two ends of the upper side of the frame assembly, and the two first adjusting seats are respectively arranged on the two fixed cross beams;
the fixed cross beam is provided with a first strip-shaped hole and a second strip-shaped hole, the number of the first strip-shaped holes is two, the two first strip-shaped holes are positioned on two sides of the second strip-shaped hole, and the first strip-shaped holes are parallel to the long axis direction of the second strip-shaped hole;
the first strip-shaped hole is used for being penetrated by a bolt to fix the first adjusting seat;
a limiting block is arranged at the bottom of the first adjusting seat and is inserted into the second strip-shaped hole;
an adjusting hole is formed in one fixed cross beam and penetrates through the fixed cross beam; and the long axis direction of the second strip-shaped hole is consistent; the limiting block is provided with a threaded hole, and the cross beam is provided with an adjusting bolt which penetrates through the adjusting hole and is matched with the threaded hole;
the adjusting bolt is provided with a baffle disc which is rotationally connected, and the baffle disc cannot move in the axial direction of the adjusting bolt;
the baffle disc is fixedly connected with the fixed cross beam.
The active powder concrete cover plate detection device comprises a roller and a brake assembly, wherein the roller and the brake assembly are arranged on the roller;
the roller is rotatably arranged at the bottom of the frame component through a wheel seat, and the brake component is arranged on the wheel seat and used for locking the roller.
The active powder concrete cover plate detection device is characterized in that a feeding channel is arranged on the supporting surface, so that the active powder concrete cover plate to be tested can move to the position right above the supporting component through the feeding channel;
further comprising a second adjustment assembly;
the second adjusting assembly comprises a second adjusting rod, a second adjusting seat and a second adjusting hand wheel;
the second adjusting rod is arranged along the transverse rotation of the frame assembly and is positioned below the feeding channel;
the second adjusting seats are fixed on the frame assembly, and two ends of the second adjusting rod are respectively and rotatably connected with the two second adjusting seats;
the second adjusting rod is provided with a third-handed thread and a fourth-handed thread along the length direction, and the third-handed thread is opposite to the fourth-handed thread;
the device also comprises two adjusting plates, wherein the two adjusting plates are arranged in a sliding manner along the transverse direction of the frame assembly; the two adjusting plates are respectively in threaded connection with the threads in the third rotation direction and the threads in the fourth rotation direction;
the second adjusting hand wheel is arranged at one end of the second adjusting rod.
The active powder concrete cover plate detection device is characterized in that a plurality of adjusting rollers are rotatably arranged on two side surfaces of the two opposite adjusting plates, the central line of each adjusting roller is vertical, and the distance between each adjusting roller and the corresponding adjusting plate is equal.
The active powder concrete cover plate detection device is characterized in that the frame assembly is provided with a transverse scale and a longitudinal scale;
the zero scale of the transverse scale is positioned at the middle position, and the scale value is increased along the direction from the middle to the two ends;
the zero scale of the longitudinal scale is positioned at the middle position, and the scale value is increased along the direction from the middle to the two ends.
Compared with the prior art, the invention has at least the following beneficial effects:
1, because the pressing component is provided with the pressing beam and the first base plate, and a shaft body is arranged between the first base plate and the pressing beam, the pressing beam and the first base plate are fixed into a whole by using a tension spring. In the using process, the first base plate or the shaft body is not separated from the pressing beam; more importantly, in the testing process, after the cover plate is bent, the acting force direction of the pressing assembly can be changed from the original vertical direction to the inclined upward direction. By the structure, the shaft body can rotate, so that the influence of transverse force can be eliminated, and more accurate results can be measured conveniently; on the other hand, compared with the common integrated press beam, after the cover plate is bent and deformed, the stress surface between the integrated press beam and the cover plate is reduced, so that the local pressure is overlarge in the test process, and the test is inaccurate. By the structure provided by the invention, the first base plate (the second base plate in the preferred embodiment) can always keep the same contact surface with the cover plate to be tested in the test process;
2, by arranging the wooden second backing plate, the second backing plate can be prevented from being in hard contact in the contact process, and damage to the cover plate caused by collision is prevented;
and 3, the cover plate to be tested is jacked up in a downward and upward mode, so that the influence of the gravity of the cover plate on the testing process in the testing process can be eliminated.
4, by arranging the cushion blocks and arranging the cushion blocks to have the size twice the thickness of the other cushion blocks, the cushion block with the minimum thickness is manufactured into the minimum adjusting size in specific application, and the cushion blocks can be selected according to the required adjusting size in different combination modes in use. On the other hand, because the cushion blocks are connected with each other through the locating piece, the center line of the adjusted jack can be prevented from being changed.
And 5, through a first adjusting rod formed by the forward and reverse screw rods, when in use, the two pressing assemblies can synchronously move in opposite directions or move in opposite directions when rotating. Specifically, since the pitches of the threads of the first rotation direction and the threads of the second rotation direction are equal, the synchronous movement speed can be ensured to be equal. Thus, a synchronous movement of the two pressing assemblies with the first adjusting hand wheel can be achieved. The high-efficiency adjustment of the two compression assemblies can be realized, and the good centering performance of the compression assemblies is ensured in the adjustment process.
6, through setting up adjusting bolt, the structure of the first regulation seat of cooperation and the structure of fixed cross beam, can realize the axial adjustment to first adjusting part, this makes at the beginning of the assembly and when correcting to whole device, can easily adjust the symmetrical center plane of two compression parts to the position of crossing the jack central line.
7, through setting up gyro wheel and brake subassembly, can be convenient for realize the removal and the locking to whole detection device.
8, set up the second adjusting part in feed channel department for when the apron that waits to detect removes feed channel department, utilize the second adjusting part, synchronous moving the regulating plate in opposite directions makes the regulating plate press from both sides tight the apron, at this moment, can guarantee that the apron has better centering in the horizontal direction, can adjust the apron to the position of horizontal centering fast, owing to set up the dancer roll, after pressing from both sides tight, still can promote the apron and remove, guarantee simultaneously that the removal process has better horizontal centering, after moving the apron to suitable position in the longitudinal direction, adjust the second adjusting part, make the regulating plate back remove.
9, through setting up horizontal scale and vertical scale, can be convenient for observe whether the apron that waits to test satisfies the condition through the scale.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a left side view of the present invention;
FIG. 3 is a front view of the present invention;
FIG. 4 is a cross-sectional view taken along A-A of FIG. 3;
FIG. 5 is a top view of the proposed overall structure of the present invention;
FIG. 6 is a left side view of a test apparatus with a second adjustment assembly in accordance with the present invention;
FIG. 7 is a partial cross-sectional view of the fixed cross-beam of the present invention taken along a transverse vertical plane;
FIG. 8 is a partial cross-sectional view of a fixed cross-beam of the present invention taken along a longitudinal vertical plane;
fig. 9 is a perspective view of the transfer trolley according to the invention.
Reference numerals illustrate: the device comprises a 1-frame assembly, a 2-supporting assembly, a 3-jacking assembly, a 4-active powder concrete cover plate, a 5-compacting assembly, a 6-first adjusting assembly, a 7-roller, an 8-braking assembly and a 9-second adjusting assembly;
11-holes, 12-fixed cross beams, 13-transverse scales and 14-longitudinal scales;
121-a first bar-shaped hole, 122-a second bar-shaped hole, 123-a limiting block, 124-an adjusting hole, 125-an adjusting bolt and 126-a baffle disc;
21-a rotating shaft;
31-jack, 32-third backing plate, 33-cushion block;
51-of a pressing beam, 52-of a shaft body, 53-of a first base plate, 54-of a tension spring and 55-of a second base plate;
61-a first adjusting rod, 62-a first adjusting seat, 63-a first adjusting hand wheel;
71-wheel seats;
91-second regulation pole, 92-second regulation seat, 93-second regulating hand wheel, 94-regulating plate, 95-regulating roller.
Detailed Description
The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the testing process of the bearing capacity of the cover plate in the prior art, the cover plate cannot be broken and fail immediately after being bent, and as the bottom surface of the press beam is flat or arc-shaped, the contact surface of the cover plate and the press beam can be gradually reduced when the cover plate is bent, and meanwhile, transverse force can be generated. This can lead to local stress build-up in the cover plate and thus to distortion of the test results.
In view of this, the present invention proposes the following scheme:
referring to fig. 1 to 9, the present invention provides an apparatus for detecting an active powder concrete cover plate, which comprises a frame assembly 1, a supporting assembly 2, a jacking assembly 3 and a compacting assembly 5. The frame assembly 1 is used for providing support for the whole structure, the support assembly 2 is used for providing support for the cover plate to be tested before testing, the jacking assembly 3 is used as a driving piece during testing, and the pressing assembly 5 is used for providing support for realizing bending of the cover plate when the cover plate is jacked.
The frame assembly 1 is used for providing support for the whole detection device; it should be noted that in the present invention, the frame assembly 1 is a cubic frame-like structure. Of course, not limited thereto, but merely as an exemplary illustration. In this example, the lateral direction refers to the width direction of the cubic frame-like structure, and the longitudinal direction refers to the length direction of the cubic frame-like structure. Importantly, when not limited to this cube frame-like structure, the longitudinal direction refers to the length direction of the cover plate during testing, and the transverse direction refers to the width direction of the cover plate during testing.
The support component 2 is arranged in the middle of the frame component 1 to form a support surface in the horizontal direction; and the middle part of the supporting component 2 is provided with an avoidance hole; that is, the support member 2 is set to avoid the position opposite to the jacking member 3, so that the jacking member 3 can jack up the cover plate during testing.
The jacking component 3 is arranged at the lower part of the frame component 1 and is positioned below the supporting surface, and the jacking component 3 is used for penetrating through the avoidance hole to drive the active powder concrete cover plate 4 to be tested to move upwards.
The pressing component 5 is arranged at the upper part of the frame component 1 in a sliding way, and the pressing component 5 is arranged on the frame component 1 in a sliding way and is positioned above the supporting surface; the number of the pressing assemblies 5 is two. During testing, the pressing assemblies 5 are used for moving to proper positions on two sides of the jacking assembly according to testing requirements, so that the jacking assembly 3 is located at the center line of the cover plate, and the distances between the two pressing assemblies 5 and the center of the cover plate are equal.
Referring to fig. 1 to 4, in particular, the opposite sides of the frame assembly 1 are provided with strip holes 11; the compression assembly 5 comprises a compression beam 51, a shaft body 52, a first backing plate 53, a tension spring 54 and a second backing plate 55; the pressing beam 51 is in sliding connection with the frame assembly 1, two ends of the pressing beam 51 are positioned in the strip hole 11, and the upper end surface of the pressing beam 51 is in sliding fit with the upper side wall of the strip hole 11; in this way, in use, forces can be transferred to the frame assembly 1 to prevent damage to other components from pressure.
Specifically, a first groove body is formed at the bottom of the pressing beam 51; a second groove body is arranged at the top of the first base plate 53, and the first base plate 53 is connected with the second base plate 55 through a plurality of tension springs 54; the shaft 52 is rotatably installed between the first groove and the second groove, and the diameter of the shaft 52 is greater than the sum of the depth of the first groove and the depth of the second groove. When the method is implemented, the first groove body and the second groove body are arc grooves. It should be noted that the covers referred to in this application are all reactive powder concrete covers.
When the test device is used, the cover plate to be tested is moved on the support assembly, the position of the cover plate is adjusted, the center line of the cover plate is opposite to the jacking assembly, and the position of the compression assembly 5 is adjusted, so that the two compression members are symmetrical relative to the center line of the jacking assembly 3. Then the cover plate is jacked up by the jacking component 3 until the cover plate is contacted with the pressing component 5, and the corresponding force is sequentially applied to the cover plate according to the test requirement, and the corresponding time is kept. When the cover plate is bent, a shaft body 52 is arranged between the pressing beam 51 and the first base plate 53, so that the first base plate 53 can deflect to a certain extent along with the bending of the cover plate, the cover plate and the first base plate 53 are always in surface contact, the problem of overlarge local pressure caused by the reduction of a contact surface is avoided, and meanwhile, the structure also plays a role in eliminating transverse force. The test result is more accurate.
Since the first pad 53 made of hard metal may generate a hard collision during the contact process with the cover plate, as a preferred implementation manner, the pressing assembly 5 further includes a second pad 55, where the second pad 55 is fixedly disposed at the bottom of the first pad 53, and the second pad 55 is a wooden board. In use, force is transferred to the cover plate through the wooden second pad 55.
Specifically, in order to facilitate the adjustment of the cover plate to a set position, the support assembly 2 is composed of a plurality of rotating shafts 21 rotatably provided on the frame assembly 1; the rotating shafts 21 are tangential to the supporting surface, and the center line is positioned below the supporting surface; the center line direction of the rotating shaft 21 is perpendicular to the moving direction of the compressing assembly 5. Thus, when the cover plate is adjusted in the longitudinal direction, the cover plate is pushed to move, and the required force can be greatly reduced due to the rotation of the rotating shaft 21, so that the accurate adjustment of the position of the cover plate is facilitated.
In the test, the cover plates with different thicknesses and different maximum bending degrees have different extension distances to the jack, the acting force required by the test is large, and the jack is easy to damage when the extending length of the jack is too large. Therefore, the cushion block needs to be added. However, in the application, the center line of the jack 31 is set, so that the jack cannot move, and once the jack moves, the jack cannot align with the center line of the cover plate in the test. Furthermore, how to adjust the thickness of the cushion blocks, so as to ensure that when more cushion blocks are fewer, the combination of different adjustment thicknesses is realized under a more continuous numerical value. Based on these considerations, the present invention further improves on the following:
the jacking assembly 3 comprises a jack 31 and a third backing plate 32; the jack 31 is used for providing driving force, and the third base plate 32 plays a supporting role. The third pad 32 is fixedly arranged on the frame assembly 1 and is positioned below the supporting surface; the jack 31 is disposed on the third pad 32 through a positioning member. A cushion block 33 is further arranged between the jack 31 and the third base plate 32, and the cushion block 33 is arranged through a positioning piece; the plurality of cushion blocks 33 are arranged in sequence numbers from small to large in thickness, and the thickness of any cushion block 33 is 2 times that of the previous cushion block 33 except for the first cushion block 33. Thus, when the number of pads 33 is N, the adjustment range of the pads 33 is 2N-1 times the thickness dimension of the minimum thickness pad.
In specific implementation, the positioning element includes a positioning hole and a positioning rod, for example, the bottom of the jack 31 is provided with a positioning hole, and the third pad 32 is provided with a positioning rod; or the bottom is provided with a positioning rod, and the third backing plate 32 is provided with a positioning hole; when the positioning rod is matched with the positioning hole, the center line of the jack 31 is positioned at a test required position. In order to avoid the change of the center line of the jack 32 caused by adding the cushion block 33, one end of the cushion block 33 is provided with a positioning rod, and the other end is provided with a positioning hole. And, the locating lever on the same cushion block 33 is coaxially arranged with the locating hole. In practice, it may be coaxial with the spacer 33.
Another key to the invention is that during testing, the position of the hold-down assembly is required to be highly symmetrical, i.e. during testing the jack is required to be in the middle of the cover plate and the hold-down assembly is required to be symmetrically positioned on both sides of the jack. In the prior art, when adjusting the compression assemblies, manual adjustment is usually required, and even if two sides are adjusted by using hydraulic cylinders or air cylinders in some experiments, the centering of the two compression assemblies cannot be ensured in the adjusting process. Even if the same pressure source and the same controller are used for the hydraulic cylinder or the air cylinder, the distance between the two pressing assemblies is difficult to ensure neutrality due to the response of the control valve, damping between the pressure pipelines and the like.
Referring to fig. 1 to 5, to achieve synchronous adjustment of the two pressing assemblies, the present invention further provides the following improvements: further comprising a first adjustment assembly 6; the first adjusting assembly 6 comprises a first adjusting rod 61, a first adjusting seat 62 and a first adjusting hand wheel 63; the first adjusting rod 61 is provided with a first adjusting part and a second adjusting part along the length direction, the first adjusting part is provided with threads with a first rotation direction, the second adjusting part is provided with threads with a second rotation direction, and the first rotation direction is opposite to the second rotation direction; both ends of the first adjusting rod 61 are respectively connected with two first adjusting seats 62 on the frame assembly 1; the first adjusting rod 61 passes through the two compressing assemblies 5, and the first adjusting part and the second adjusting part are respectively in threaded connection with the two compressing assemblies 5; the length direction of the first adjusting rod 61 is the same as the sliding direction of the compressing assembly 5; the first adjusting hand wheel 63 is fixedly connected with one end of the first adjusting rod 61. In practice, the threads of the first and second handedness should have equal constant pitches.
In the above structure, although the first adjusting component 6 realizes the synchronous adjustment of the two pressing components 5 towards each other or away from each other, in practical application, the opposite middle surfaces of the two pressing components 5 towards each other or away from each other are mirror image surfaces between the two, and the surfaces are difficult to refer to. During assembly, the position of the jack and the position of the jack are changed due to the difference of one screw pitch, so that the testing condition is changed, and in order to eliminate the phenomenon, the invention further improves as follows:
referring to fig. 7 and 8, in the embodiment, two ends of the upper side of the frame assembly 1 are provided with fixed cross beams 12, and two first adjusting seats 62 are respectively mounted on the two fixed cross beams 12. A first bar-shaped hole 121 and a second bar-shaped hole 122 are formed in the fixed cross beam 12, the number of the first bar-shaped holes 121 is two, the two first bar-shaped holes 121 are positioned on two sides of the second bar-shaped hole 122, and the first bar-shaped holes 121 are parallel to the long axis direction of the second bar-shaped hole 122; the first bar-shaped hole 121 is used for being penetrated by a bolt to fix the first adjusting seat 62; a limiting block 123 is arranged at the bottom of the first adjusting seat 62, and the limiting block 123 is inserted into the second strip-shaped hole 122; an adjusting hole 124 is formed in one of the fixed beams 12, and the adjusting hole 124 penetrates through the fixed beam 12; and the long axis direction of the second bar-shaped hole 122 is consistent; the limiting block 123 is provided with a threaded hole, and the cross beam is provided with an adjusting bolt 125 which passes through the adjusting hole 124 and is matched with the threaded hole; the adjusting bolt 125 is provided with a baffle disc 126 which is connected in a rotating way, and the baffle disc 126 can not move in the axial direction of the adjusting bolt 125; the baffle plate 126 is fixedly connected with the fixed cross beam 12.
In particular use, the two first adjustment seats 62 cannot move and cannot be adjusted by the cooperation of the fixing bolts and the first strip-shaped holes 121. When the mirror surfaces of the two pressing assemblies are found to be not enough to pass the center line of the jack, the fixing bolts are loosened, and then the adjustment of the first adjustment seat 62 relative to the frame assembly 1 can be achieved by rotating the adjustment bolts 125. This applies only to fine tuning, and when coarse is desired, the entire first adjustment assembly needs to be removed and the position between the two compression assemblies can be changed by rotating the compression assemblies. Since the limiting block 123 is arranged, the position of the first adjusting component 6 in the transverse direction can be limited, and the first adjusting component can be positioned at the center in the transverse direction after being installed.
In the specific implementation, the first adjusting rod 61 with threads is used for adjusting, and the threads are usually high in accuracy; in the non-use state, if the first adjusting rod 61 directly bears the gravity of the pressing assembly 5, the first adjusting rod 61 is easy to deform, so that the service life of the first adjusting rod is shortened. Based on this consideration, the present invention proposes a further improvement:
two guide rails are arranged on the top of the frame assembly 1 along the longitudinal direction, an L-shaped bracket is connected to the upper surface of the compression assembly 5, and two rotatable guide wheels are arranged on the bracket; the guide wheel is matched with the guide wheel. Thus, two guide wheels are respectively arranged at two ends of each compression assembly 5. Therefore, in the non-use state, the gravity of the pressing assembly 5 is converted into being supported by the guide rail through the cooperation of the L-shaped bracket and the guide wheel, so that the influence of the gravity of the pressing assembly 5 on the first adjusting rod 61 is reduced or completely avoided. From another point of view, the use of rolling instead of sliding results in less force being required to adjust the position of the hold down assembly, which is facilitated by the rotation of the first adjustment lever 61.
In addition, still be equipped with two with first regulation pole 61 parallel guide bar, the guide bar with compress tightly subassembly 5 slip setting, through setting up the guide bar, be favorable to eliminating the deflection force that first regulation pole 61 produced when rotating, guarantee two compress tightly subassembly 5 can parallel movement.
The first adjusting rod 61 is used for adjusting the two pressing assemblies 5, and the threads have a self-locking function, so that after the two pressing assemblies 5 are adjusted in place, the two pressing assemblies 5 can be prevented from moving under the condition that the first adjusting rod 61 is not rotated.
For convenient movement and locking, the device also comprises a roller 7 and a brake assembly 8; the roller 7 is rotatably mounted on the bottom of the frame assembly 1 through a wheel seat 71, and the brake assembly 8 is mounted on the wheel seat 71 for locking the roller 7.
In specific use, referring to fig. 9, a transfer trolley may also be provided to facilitate transfer of the cover plate to the frame assembly 1.
In the prior art, the adjustment of the cover plate in the transverse direction is also performed manually, and during the adjustment, a slight deflection in the longitudinal direction is difficult to occur. And there is no structure for lateral adjustment in the prior art. This causes a number of inconveniences in the testing process and seriously affects the test results. In view of this, the present invention also makes the following improvements:
specifically, a feeding channel is arranged on the supporting surface, so that the active powder concrete cover plate 4 to be tested moves to the position right above the supporting component 2 through the feeding channel. The feed channel refers to the portion of the support assembly 2 that is before the test position.
In this solution, a second adjusting assembly 9 is also included; the second adjusting assembly 9 comprises a second adjusting rod 91, a second adjusting seat 92 and a second adjusting hand wheel 93; the second adjusting assembly 9 is used for adjusting the position of the cover plate in the transverse direction.
Specifically, referring to fig. 6, the second adjusting lever 91 is rotatably disposed along the transverse direction of the frame assembly 1 and is located below the feeding channel; further, the second adjusting seats 92 are fixed on the frame assembly 1, and two ends of the second adjusting rod 91 are respectively connected with the two second adjusting seats 92 in a rotating manner; the second adjusting rod 91 is provided with a third-handed thread and a fourth-handed thread along the length direction, and the third-handed thread is opposite to the fourth-handed thread. The device further comprises two adjusting plates 94, wherein the two adjusting plates 94 are arranged in a sliding manner along the transverse direction of the frame assembly 1; the two adjusting plates 94 are respectively in threaded connection with the threads of the third rotation direction and the threads of the fourth rotation direction; the second adjusting hand wheel 93 is mounted at one end of the second adjusting lever 91. When specifically provided, the mirror image of the two adjustment plates 94 should be ensured to pass through the center line of the jack.
The second adjusting assembly 9 is able to adjust the cover plate in the lateral direction, but since the cover plate is now located in the feed channel instead of in the test position, there is still a risk of the cover plate moving in the lateral direction as the cover plate continues to move to the test position. In this case, the invention further improves the scheme:
specifically, a plurality of adjusting rollers 95 are rotatably disposed on two opposite sides of the adjusting plate 94, a center line of the adjusting rollers 95 is vertical, and a distance between each adjusting roller 95 protruding from the adjusting plate 94 is equal.
Thus, after the cover plate is adjusted on the feed channel, since the adjustment roller 95 abuts against the side surface of the cover plate, the cover plate is pushed in the longitudinal direction at this time, and the cover plate moves to the testing position under the restriction of the adjustment roller 95 without lateral deflection. After complete adjustment in place, the adjustment plate 94 is adjusted to a position remote from the cover plate by controlling the second adjustment hand wheel 93.
In particular, in order to facilitate the observation of the centring of the cover plate, the frame assembly 1 is provided with a transverse scale 13 and a longitudinal scale 14; the zero scale of the transverse scale 13 is positioned at the middle position, and the scale value is increased along the direction from the middle to the two ends; the zero scale of the longitudinal scale 14 is located at the middle position, and the scale value becomes large in the direction from the middle to the two ends.
The longitudinal scales 14 are arranged on two longitudinal beams at the top of the frame assembly 1, and the transverse scales 13 are arranged on two compression assemblies.
Through the scheme, the invention has at least the following beneficial effects:
1, because the pressing component is provided with the pressing beam and the first base plate, and a shaft body is arranged between the first base plate and the pressing beam, the pressing beam and the first base plate are fixed into a whole by using a tension spring. In the using process, the first base plate or the shaft body is not separated from the pressing beam; more importantly, in the testing process, after the cover plate is bent, the acting force direction of the pressing assembly can be changed from the original vertical direction to the inclined upward direction. By the structure, the shaft body can rotate, so that the influence of transverse force can be eliminated, and more accurate results can be measured conveniently; on the other hand, compared with the common integrated press beam, after the cover plate is bent and deformed, the stress surface between the integrated press beam and the cover plate is reduced, so that the local pressure is overlarge in the test process, and the test is inaccurate. By the structure provided by the invention, the second base plate of the first base plate in the preferred embodiment can always keep the same contact surface with the cover plate to be tested in the test process;
2, by arranging the wooden second backing plate, the second backing plate can be prevented from being in hard contact in the contact process, and damage to the cover plate caused by collision is prevented;
and 3, the cover plate to be tested is jacked up in a downward and upward mode, so that the influence of the gravity of the cover plate on the testing process in the testing process can be eliminated.
4, by arranging the cushion blocks and arranging the cushion blocks to have the size twice the thickness of the other cushion blocks, the cushion block with the minimum thickness is manufactured into the minimum adjusting size in specific application, and the cushion blocks can be selected according to the required adjusting size in different combination modes in use. On the other hand, because the cushion blocks are connected with each other through the locating piece, the center line of the adjusted jack can be prevented from being changed.
And 5, through a first adjusting rod formed by the forward and reverse screw rods, when in use, the two pressing assemblies can synchronously move in opposite directions or move in opposite directions when rotating. Specifically, since the pitches of the threads of the first rotation direction and the threads of the second rotation direction are equal, the synchronous movement speed can be ensured to be equal. Thus, a synchronous movement of the two pressing assemblies with the first adjusting hand wheel can be achieved. The high-efficiency adjustment of the two compression assemblies can be realized, and the good centering performance of the compression assemblies is ensured in the adjustment process.
6, through setting up adjusting bolt, the structure of the first regulation seat of cooperation and the structure of fixed cross beam, can realize the axial adjustment to first adjusting part, this makes at the beginning of the assembly and when correcting to whole device, can easily adjust the symmetrical center plane of two compression parts to the position of crossing the jack central line.
7, through setting up gyro wheel and brake subassembly, can be convenient for realize the removal and the locking to whole detection device.
8, set up the second adjusting part in feed channel department for when the apron that waits to detect removes feed channel department, utilize the second adjusting part, synchronous moving the regulating plate in opposite directions makes the regulating plate press from both sides tight the apron, at this moment, can guarantee that the apron has better centering in the horizontal direction, can adjust the apron to the position of horizontal centering fast, owing to set up the dancer roll, after pressing from both sides tight, still can promote the apron and remove, guarantee simultaneously that the removal process has better horizontal centering, after moving the apron to suitable position in the longitudinal direction, adjust the second adjusting part, make the regulating plate back remove.
9, through setting up horizontal scale and vertical scale, can be convenient for observe whether the apron that waits to test satisfies the condition through the scale.
While the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
Claims (10)
1. An active powder concrete cover plate detection device comprises,
-a frame assembly (1), the frame assembly (1) being adapted to provide support for the entire detection device;
a support assembly (2), wherein the support assembly (2) is arranged in the middle of the frame assembly (1) to form a support surface in the horizontal direction; the middle part of the supporting component (2) is provided with an avoidance hole;
the jacking component (3) is arranged at the lower part of the frame component (1) and is positioned below the supporting surface, and the jacking component (3) is used for penetrating through the avoidance hole to drive the active powder concrete cover plate (4) to be tested to move upwards;
the pressing component (5) is arranged on the upper part of the frame component (1) in a sliding manner, and the pressing component (5) is arranged on the frame component (1) in a sliding manner and is positioned above the supporting surface; the number of the pressing assemblies (5) is two;
it is characterized in that the method comprises the steps of,
strip holes (11) are formed in two opposite sides of the frame assembly (1);
the compression assembly (5) comprises a compression beam (51), a shaft body (52), a first base plate (53), a tension spring (54) and a second base plate (55);
the pressing beam (51) is in sliding connection with the frame assembly (1), two ends of the pressing beam (51) are located in the strip hole (11), and the upper end face of the pressing beam (51) is in sliding fit with the upper side wall of the strip hole (11);
the bottom of the pressing beam (51) is provided with a first groove body;
the top of the first base plate (53) is provided with a second groove body, and the first base plate (53) is connected with the second base plate (55) through a plurality of tension springs (54);
the shaft body (52) is rotatably arranged between the first groove body and the second groove body, and the diameter of the shaft body (52) is larger than the sum of the depth of the first groove body and the depth of the second groove body.
2. The reactive powder concrete cover plate detection device according to claim 1, wherein: the pressing assembly (5) further comprises a second base plate (55), the second base plate (55) is fixedly arranged at the bottom of the first base plate (53), and the second base plate (55) is a wood plate.
3. The reactive powder concrete cover plate detection device according to claim 2, wherein: the supporting component (2) is composed of a plurality of rotating shafts (21) which are rotatably arranged on the frame component (1);
the rotating shafts (21) are tangential to the supporting surface, and the center line of the rotating shafts is positioned below the supporting surface;
the center line direction of the rotating shaft (21) is perpendicular to the moving direction of the pressing component (5).
4. A reactive powder concrete cover plate detection apparatus according to claim 3, characterized in that: the jacking assembly (3) comprises a jack (31) and a third base plate (32);
the third base plate (32) is fixedly arranged on the frame assembly (1) and is positioned below the supporting surface;
the jack (31) is arranged on the third base plate (32) through a positioning piece;
a cushion block (33) is further arranged between the jack (31) and the third base plate (32), and the cushion block (33) is arranged through a positioning piece;
the plurality of cushion blocks (33) are arranged according to the sequence number from small thickness to large thickness, and the thickness of any cushion block (33) is 2 times that of the previous cushion block (33) except the first cushion block (33).
5. The reactive powder concrete cover plate detection device according to claim 1, wherein: also comprises a first adjusting component (6);
the first adjusting assembly (6) comprises a first adjusting rod (61), a first adjusting seat (62) and a first adjusting hand wheel (63);
the first adjusting rod (61) is provided with a first adjusting part and a second adjusting part along the length direction, the first adjusting part is provided with threads with a first rotation direction, the second adjusting part is provided with threads with a second rotation direction, and the first rotation direction is opposite to the second rotation direction;
both ends of the first adjusting rod (61) are respectively connected with the two first adjusting seats (62) on the frame assembly (1); the first adjusting rod (61) passes through the two compression assemblies (5), and the first adjusting part and the second adjusting part are respectively in threaded connection with the two compression assemblies (5); the length direction of the first adjusting rod (61) is the same as the sliding direction of the pressing assembly (5);
the first adjusting hand wheel (63) is fixedly connected with one end of the first adjusting rod (61).
6. The reactive powder concrete cover plate detection device according to claim 5, wherein:
two ends of the upper side of the frame assembly (1) are provided with fixed cross beams (12), and two first adjusting seats (62) are respectively arranged on the two fixed cross beams (12);
the fixed cross beam (12) is provided with a first strip-shaped hole (121) and a second strip-shaped hole (122), the number of the first strip-shaped holes (121) is two, the two first strip-shaped holes (121) are positioned on two sides of the second strip-shaped hole (122), and the first strip-shaped holes (121) are parallel to the long axis direction of the second strip-shaped hole (122);
the first bar-shaped hole (121) is used for being penetrated by a bolt to fix the first adjusting seat (62);
a limiting block (123) is arranged at the bottom of the first adjusting seat (62), and the limiting block (123) is inserted into the second strip-shaped hole (122);
an adjusting hole (124) is formed in one fixed cross beam (12), and the adjusting hole (124) penetrates through the fixed cross beam (12); and the long axis direction of the second strip-shaped hole (122) is consistent; the limiting block (123) is provided with a threaded hole, and the cross beam is provided with an adjusting bolt (125) which penetrates through the adjusting hole (124) and is matched with the threaded hole;
a baffle disc (126) which is connected in a rotating way is arranged on the adjusting bolt (125), and the baffle disc (126) can not move in the axial direction of the adjusting bolt (125);
the baffle disc (126) is fixedly connected with the fixed cross beam (12).
7. The reactive powder concrete cover plate detection device according to claim 1, wherein: the device also comprises a roller (7) and a brake assembly (8);
the roller (7) is rotatably mounted at the bottom of the frame assembly (1) through a wheel seat (71), and the brake assembly (8) is mounted on the wheel seat (71) so as to be used for locking the roller (7).
8. The reactive powder concrete cover plate detection device according to claim 1, wherein:
a feeding channel is arranged on the supporting surface so that the active powder concrete cover plate (4) to be tested moves to the position right above the supporting component (2) through the feeding channel;
also comprises a second adjusting assembly (9);
the second adjusting assembly (9) comprises a second adjusting rod (91), a second adjusting seat (92) and a second adjusting hand wheel (93);
the second adjusting rod (91) is arranged along the transverse rotation of the frame assembly (1) and is positioned below the feeding channel;
the second adjusting seats (92) are fixed on the frame assembly (1), and two ends of the second adjusting rod (91) are respectively and rotatably connected with the two second adjusting seats (92);
the second adjusting rod (91) is provided with a third-handed thread and a fourth-handed thread along the length direction, and the third-handed thread is opposite to the fourth-handed thread;
the device further comprises two adjusting plates (94), wherein the two adjusting plates (94) are arranged in a sliding manner along the transverse direction of the frame assembly (1); the two adjusting plates (94) are respectively in threaded connection with the threads in the third rotation direction and the threads in the fourth rotation direction;
the second adjusting hand wheel (93) is arranged at one end of the second adjusting rod (91).
9. The reactive powder concrete cover plate detection device according to claim 8, wherein: two the regulating plates (94) are oppositely arranged on two side surfaces, a plurality of regulating rollers (95) are rotatably arranged on the two side surfaces, the central line of each regulating roller (95) is vertical, and the distance between each regulating roller (95) protruding out of each regulating plate (94) is equal.
10. The reactive powder concrete cover detection apparatus according to any one of claims 1 to 9, wherein: the frame assembly (1) is provided with a transverse scale (13) and a longitudinal scale (14);
the zero scale of the transverse scale (13) is positioned at the middle position, and the scale value is increased along the direction from the middle to the two ends;
the zero scale of the longitudinal scale (14) is positioned at the middle position, and the scale value is increased along the direction from the middle to the two ends.
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| CN202011369825.2A CN112557637B (en) | 2020-11-30 | 2020-11-30 | Active powder concrete apron detection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011369825.2A CN112557637B (en) | 2020-11-30 | 2020-11-30 | Active powder concrete apron detection device |
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