CN114965062A - Portable device for testing bonding strength of sprayed concrete - Google Patents
Portable device for testing bonding strength of sprayed concrete Download PDFInfo
- Publication number
- CN114965062A CN114965062A CN202210758177.2A CN202210758177A CN114965062A CN 114965062 A CN114965062 A CN 114965062A CN 202210758177 A CN202210758177 A CN 202210758177A CN 114965062 A CN114965062 A CN 114965062A
- Authority
- CN
- China
- Prior art keywords
- sliding
- plate
- bonding strength
- sliding plate
- bolt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
- G01N1/08—Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
-
- 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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
-
- 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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention provides a portable device for testing the bonding strength of sprayed concrete, which comprises a fixing device, a chute plate, a drill core device and a bonding strength testing device, wherein the fixing device is fixedly arranged on a rock surface, the chute plate is fixedly arranged on the fixing device, the drill core device is arranged on the chute plate in a sliding manner, and the bonding strength testing device is arranged on the chute plate in a sliding manner. The device has the advantages of simple structure, convenience in fixation, convenience in operation, safety and reliability, can adapt to various field conditions, can detect the bonding strength between the sprayed concrete and the rock contact surface, has important significance for improving the detection accuracy and efficiency, reducing the detection cost and ensuring the support quality of the sprayed concrete, and is suitable for wide popularization and application.
Description
Technical Field
The invention relates to the technical field of engineering test detection, in particular to a portable device for testing the bonding strength of sprayed concrete.
Background
The sprayed concrete support is widely applied to support or surface protection of projects such as tunnels, chambers, side slopes, foundation pits and the like, and is widely applied to domestic hydroelectric projects, for example, the sprayed concrete support is applied to diversion tunnels, plants and dam shoulders of hydropower stations, the working principle of the sprayed concrete support is that compressed air or other power is utilized to convey a concrete mixture mixed according to a certain mixing ratio to a spray head along a pipeline and spray the concrete mixture on a rock surface, the sprayed concrete support is formed by relying on continuous impact and compaction of cement and aggregate in the spraying process, the self-stability function of surrounding rock is fully considered and actively exerted, the sprayed concrete is combined with the self-stability capability of the surrounding rock, the air is sprayed into joints and cracks on the surface of the surrounding rock at a high speed, the rock bodies separated by the joints and the cracks are connected, the loosening and the sliding of rock blocks are effectively prevented, and the sprayed concrete forms a closed layer tightly attached to the rock surface, the weathering and denudation effects of water and air on the surrounding rock are isolated, and the influence on structural stability and normal use caused by the weathering and denudation of the surrounding rock is prevented. Meanwhile, the sprayed concrete is tightly bonded with the rock mass to form a common stress system integrating the surrounding rock and the support. The bonding strength between the sprayed concrete support and the rock surface is fully utilized, and the stability and the supporting capability of the structure are improved. But at present, a testing device which can be suitable for various field conditions and can detect the bonding strength between sprayed concrete and a rock body contact surface does not exist.
Disclosure of Invention
The invention aims to provide a portable sprayed concrete bonding strength testing device which can detect the bonding strength between sprayed concrete and a rock contact surface and has important significance for improving the detection accuracy and efficiency, reducing the detection cost and ensuring the sprayed concrete supporting quality.
According to one object of the invention, the invention provides a portable shotcrete bonding strength testing device which comprises a fixing device, a sliding groove plate, a core drilling device and a bonding strength testing device, wherein the fixing device is fixedly arranged on a rock surface, the sliding groove plate is fixedly arranged on the fixing device, the core drilling device is arranged on the sliding groove plate in a sliding mode, and the bonding strength testing device is arranged on the sliding groove plate in a sliding mode.
Further, the chute board includes chute board main part and two first spacing bolts, the chute board main part pass through the bolt install in fixing device is last, the symmetry is provided with trapezoidal spout in the chute board main part, be provided with the rectangle recess in the chute board main part, be provided with first through-hole in the chute board main part, the symmetry is provided with the viewing aperture in the chute board main part, bilateral symmetry is provided with first screw hole in the chute board main part, first spacing bolt passes through first screw hole spiro union is in the chute board main part, just first spacing bolt passes the chute board main part lateral wall stretches into in the trapezoidal spout.
Further, the core drilling device comprises a first sliding support, a second sliding support, a drilling machine, a cutting drill bit, a screw rod and a locknut, the first sliding support is arranged on the sliding chute plate main body in a sliding mode, the second sliding support is arranged on the first sliding support in a sliding mode, the drilling machine is fixedly arranged on the second sliding support, the drilling machine is communicated with an external power supply through a wire, the cutting drill bit is detachably arranged on the drilling machine, the screw rod is rotatably arranged on the second sliding support, the locknut is arranged at the bottom of the screw rod, and a handle is arranged at the tail of the screw rod.
Furthermore, the first sliding support comprises a first sliding plate, a guide rod, a tail mounting plate and a second limiting bolt, the guide rod is symmetrically arranged on the first sliding plate, the tail mounting plate is fixedly mounted at the tail end of the guide rod, the second limiting bolt penetrates through the first sliding plate and is in threaded connection with the first sliding plate, the diameter of the second limiting bolt is equal to the width of the rectangular groove in the sliding groove plate main body, and the position of the second limiting bolt corresponds to the rectangular groove.
Furthermore, a first trapezoidal sliding block and a third threaded hole are symmetrically arranged on the first sliding plate, the first trapezoidal sliding block is matched with the trapezoidal sliding groove, and the third threaded hole is matched with the first limiting bolt and the first threaded hole.
Further, the bonding strength measuring device comprises a third sliding support, an anchor rod drawing instrument and a clamp, wherein the third sliding support is arranged on the sliding groove plate main body in a sliding mode, the anchor rod drawing instrument is fixedly arranged on the third sliding support, the anchor rod drawing instrument is connected with an external pressurizing device through a pipeline, and the clamp is arranged at the tail of the anchor rod drawing instrument.
Further, the third sliding support includes third slide, bracing piece, first mounting panel, second mounting panel and third spacing bolt, the bracing piece symmetry sets up on the third slide, first mounting panel fixed mounting is in the middle section of bracing piece leans on down, the second mounting panel is installed the afterbody of bracing piece, third spacing bolt passes the third slide just with third slide threaded connection, third spacing bolt diameter with in the spout board main part rectangle recess width is the same, third spacing bolt position with the rectangle recess is corresponding.
Furthermore, a second trapezoidal sliding block and a fourth threaded hole are symmetrically arranged on the third sliding plate, the second trapezoidal sliding block is matched with the trapezoidal sliding groove for use, and the fourth threaded hole is matched with the first limiting bolt and the first threaded hole for use.
Furthermore, fixing device includes bearing plate and inflation bolt group, inflation bolt group sets up in the bearing plate four corners, be provided with the round hole on the bearing plate.
Further, the expansion bolt group comprises an expansion bolt rod, a first adjusting nut and a second adjusting nut, the tail end of the expansion bolt rod penetrates through the bearing plate, and the first adjusting nut and the second adjusting nut are respectively arranged at two ends of the bearing plate.
The technical scheme of the invention has the advantages of simple structure, convenient fixation, convenient operation, safety and reliability, can be suitable for various field conditions, can detect the bonding strength between the contact surface of the sprayed concrete and the rock mass, has important significance for improving the detection accuracy and efficiency, reducing the detection cost and ensuring the support quality of the sprayed concrete, and is suitable for wide popularization and application.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a top view of an embodiment of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2 in accordance with an embodiment of the present invention;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2 in accordance with an embodiment of the present invention;
FIG. 5 is a schematic view of a fixing device according to an embodiment of the present invention;
FIG. 6 is a schematic structural view of a main body of a chute plate according to an embodiment of the invention;
FIG. 7 is a schematic structural view of a core drilling apparatus according to an embodiment of the present invention;
FIG. 8 is a schematic structural view of a first sliding bracket according to an embodiment of the present invention;
FIG. 9 is a schematic structural view of a second sliding bracket according to the embodiment of the present invention;
FIG. 10 is a schematic view showing the structure of a bonding strength measuring apparatus according to an embodiment of the present invention;
FIG. 11 is a schematic structural view of a third sliding bracket according to the embodiment of the present invention;
in the figure, 1-fixing device, 11-bearing plate, 111-round hole, 12-expansion bolt group, 121-expansion bolt rod, 122-first adjusting nut, 123-second adjusting nut, 2-sliding groove plate, 21-sliding groove plate main body, 211-trapezoidal sliding groove, 212-rectangular groove, 213-first threaded hole, 214-first through hole, 215-viewing port, 22-first limiting bolt, 3-drilling core device, 31-first sliding bracket, 311-first sliding plate, 3111-first trapezoidal sliding block, 3112-third threaded hole, 312-guide rod, 313-tail mounting plate, 3131-second threaded hole, second limiting bolt 314, 32-second sliding bracket, 33-drilling machine, 34-cutting drill bit, 35-lead screw, 36-locknut, 4-bonding strength measuring device, 41-third sliding support, 411-third sliding plate, 4111-second trapezoidal sliding block, 4112-fourth threaded hole, 412-supporting rod, 413-first mounting plate, 414-second mounting plate, 415-third limiting bolt, 42-anchor rod drawing instrument and 43-clamp.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be apparent that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "coupled" are to be construed broadly and may include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
As shown in figures 1-11 of the drawings,
the utility model provides a portable shotcrete bonds intensity testing arrangement, includes fixing device 1, chute board 2, bores core device 3 and bonding strength survey device 4, and fixing device 1 fixed mounting is on the rock face, and chute board 2 fixed mounting is on fixing device 1, and the core device 3 that bores slides and sets up on chute board 2, and bonding strength survey device 4 slides and sets up on chute board 2.
The chute board 2 comprises a chute board main body 21 and two first limit bolts 22, the chute board main body 21 is installed on the fixing device 1 through bolts, trapezoidal sliding grooves 211 are symmetrically formed in the chute board main body 21, rectangular grooves 212 are formed in the chute board main body 21, first through holes 214 are formed in the chute board main body 21, observation ports 215 are symmetrically formed in the chute board main body 21, first threaded holes 213 are symmetrically formed in the chute board main body 21 in two sides, the first limit bolts 22 are in threaded connection with the chute board main body 21 through the first threaded holes 213, and the first limit bolts 22 can penetrate through the side wall of the chute board main body 21 and extend into the trapezoidal sliding grooves 211.
The core drilling device 3 comprises a first sliding support 31, a second sliding support 32, a drilling machine 33, a cutting drill 34, a lead screw 35 and a locknut 36, wherein the first sliding support 31 is arranged on the sliding chute plate main body 21 in a sliding mode, the second sliding support 32 is arranged on the first sliding support 31 in a sliding mode, the drilling machine 33 is fixedly arranged on the second sliding support 32, the drilling machine 33 is communicated with an external power supply through a lead, the cutting drill 34 is detachably arranged on the drilling machine 33, the lead screw 35 is rotatably arranged on the second sliding support 32, the locknut 36 is arranged at the bottom of the lead screw 35, the locknut 36 prevents the lead screw 35 from being separated from the second sliding support 32 when rotating, the lead screw 35 penetrates through a tail mounting plate 313 of the first sliding support 31, the lead screw 35 is matched with a second threaded hole 3131 in the tail mounting plate 313, and the tail of the lead screw 35 is provided with a handle;
specifically, by rotating the handle at the tail of the screw rod 35, the screw rod 35 can move up and down under the matching of the screw rod 35 and the second threaded hole 3131, the screw rod 35 can drive the second sliding support 32 to slide up and down on the first sliding support 31, and further drive the drilling machine 33 and the cutting bit 34 which are installed on the second sliding support 32 to move up and down, so as to achieve the purpose of cutting the core;
the first sliding bracket 31 comprises a first sliding plate 311, a guide rod 312, a tail mounting plate 313 and a second limiting bolt 314, wherein the guide rod 312 is symmetrically arranged on the first sliding plate 311, the tail mounting plate 313 is fixedly mounted at the tail end of the guide rod 312, the second limiting bolt 314 passes through the first sliding plate 311 and is in threaded connection with the first sliding plate 311, the diameter of the second limiting bolt 314 is the same as the width of the rectangular groove 212 on the sliding groove plate main body 21, and the position of the second limiting bolt 314 corresponds to the rectangular groove 212;
specifically, when the first sliding support 31 needs to be fixed, the second limiting bolt 314 can be screwed, so that the second limiting bolt 314 is tightly attached to the bottom of the rectangular groove 212, the purpose of fixing the position of the first sliding support 31 is achieved, and meanwhile, the arrangement of the rectangular groove 212 can also prevent the second limiting bolt 314 from excessively rubbing the sliding chute plate main body 21 to influence the service life of the sliding chute plate main body 21;
the first sliding plate 311 is further symmetrically provided with a first trapezoidal sliding block 3111 and a third threaded hole 3112, the first trapezoidal sliding block 3111 is matched with the trapezoidal sliding groove 211 for use, and the third threaded hole 3112 is matched with the first limiting bolt 22 and the first threaded hole 213 for use;
specifically, first limit bolt 22 passes through first screw hole 213 spiro union on spout board main part 21, and first limit bolt 22 can pass spout board main part 21 lateral wall and stretch into trapezoidal spout 211 in, first limit bolt 22 can pass behind the spout board main part 21 lateral wall and can cooperate with third screw hole 3112 on the first slide 311 that reachs this position department, but first limit bolt 22 screw in third screw hole 3112 is interior, can carry out secondary spacing to first slide 311, guarantee that rig 33 and cutting bit 34 are more stable at the during operation.
The bonding strength measuring device 4 comprises a third sliding support 41, an anchor rod drawing instrument 42 and a clamp 43, wherein the third sliding support 41 is arranged on the sliding chute plate main body 21 in a sliding mode, the anchor rod drawing instrument 42 is fixedly arranged on the third sliding support 41, the anchor rod drawing instrument 42 is connected with an external pressurizing device through a pipeline, and the clamp 43 is arranged at the tail of the anchor rod drawing instrument 42;
the third sliding support 41 comprises a third sliding plate 411, a supporting rod 412, a first mounting plate 413, a second mounting plate 414 and a third limiting bolt 415, the supporting rod 412 is symmetrically arranged on the third sliding plate 411, the first mounting plate 413 is fixedly mounted at the middle section of the supporting rod 412 and is close to the lower part, the second mounting plate 414 is mounted at the tail part of the supporting rod 412, the third limiting bolt 415 penetrates through the third sliding plate 411 and is in threaded connection with the third sliding plate 411, the diameter of the third limiting bolt 415 is the same as the width of the rectangular groove 212 on the sliding chute plate main body 21, and the position of the third limiting bolt 415 corresponds to the rectangular groove 212;
the third sliding plate (411) is also symmetrically provided with a second trapezoidal sliding block 4111 matched with the trapezoidal sliding groove 211, and a fourth threaded hole 4112 matched with the first limiting bolt 22 and the first threaded hole 213;
specifically, the first limit bolt 22 is screwed on the chute plate main body 21 through the first threaded hole 213, and the first limit bolt 22 can penetrate through the side wall of the chute plate main body 21 and extend into the trapezoidal sliding groove 211, the first limit bolt 22 can be matched with a fourth threaded hole 4112 on the third sliding plate 411 reaching the position after penetrating through the side wall of the chute plate main body 21, the first limit bolt 22 can be screwed into the fourth threaded hole 3112, secondary limit can be performed on the third sliding plate 411, and the anchor rod drawing instrument 42 is ensured to be more stable during working;
the fixing device 1 comprises a bearing plate 11 and expansion bolt groups 12, wherein the expansion bolt groups 12 are arranged at four corners of the bearing plate 11, and round holes 111 are formed in the bearing plate 11;
the expansion bolt group 12 comprises an expansion bolt rod 121, a first adjusting nut 122 and a second adjusting nut 123, the tail end of the expansion bolt rod 121 penetrates through the pressure bearing plate 11, and the first adjusting nut 122 and the second adjusting nut 123 are respectively arranged at two ends of the pressure bearing plate 11;
specifically, the position of the pressure bearing plate 11 on the expansion bolt rod 121, and thus the position of the entire apparatus, can be adjusted by rotationally adjusting the positions of the first and second adjustment nuts 122 and 123.
When the invention is used, a position to be detected is selected, an electric hammer is used for drilling a hole at the detected position, the drilling depth is generally 10cm and is less than the thickness of sprayed concrete, the hole is used for installing an expansion bolt rod 121, then the whole device is installed on the expansion bolt rod 121, the height of the device is adjusted by rotationally adjusting a first adjusting nut 122 and a second adjusting nut 123, a bearing plate 11 is fixed when the device is adjusted to the required position, then a second limiting bolt 314 is unscrewed, so that the second limiting bolt 314 is separated from the bottom of a rectangular groove 212, at the moment, a drill core device 3 can slide on a sliding groove plate main body 21, the drill core device 3 slides to the working position, a third threaded hole 3112 is observed to reach a position corresponding to a first threaded hole 213 through an observation port 215, the first limiting bolt 22 is screwed into the third threaded hole 3112, the second limiting bolt 314 is screwed, the second limit bolt 314 is tightly attached to the bottom of the rectangular groove 212, at the moment, the core drilling device 3 is completely fixed, the power supply drilling machine of the drilling machine 33 is started to work, the screw rod 35 is rotated to push the cutting drill bit 34 to drill in a way of being vertical to the sprayed concrete layer surface, the drilling diameter phi is 100 and extends into the surrounding rock by more than 20mm, a cylindrical body to be measured with a sprayed concrete and surrounding rock bonding surface is formed, when the required depth is drilled, the screw rod 35 is reversely rotated to pull out the core drilling bit 34, then the second limit bolt 314 is unscrewed to separate the bottom of the rectangular groove 212, the first limit bolt 22 is screwed out from the third threaded hole 3112, the core drilling device 3 is pushed away from the working position, the bonding strength measuring device 4 is fixed to the working position in the same way, the anchor rod with the internal thread is connected and fixed with the expansion bolt on the cylindrical body to be measured, and the anchor rod is clamped by the anchor rod drawing instrument 42 and the clamp 43, then starting an external pressurizing device to perform a test, wherein the test content is as follows:
1. and (3) testing the damage area of the joint surface of the sprayed concrete and the surrounding rock, filling cement into an enamel disc, wherein the cement is required to be flat, placing a soft thin film on the fracture surface of the test piece, placing the soft thin film into the enamel disc together, and drawing a circle along the periphery of the test piece by using a pen. Scanning to a computer, and calculating the area by using CAD;
2. testing the intersection angle of the fracture surface and the cross section of the core sample, transversely placing the test piece on a piece of blank paper for fixing the position, drawing a side line of the test piece, paying attention to the extension line, finding the highest point and the lowest point of the fracture surface, and drawing the angle between the side line and the highest point and the lowest point;
3. calculating the bonding strength of the sprayed concrete and the surrounding rock according to the following formula:
in the formula: bond strength of Rc-shotcrete and surrounding rock, unit: MPa;
pc-measured breaking force, unit: n;
ac-actual measurement sprayed concrete and surrounding rock combinationArea of surface damage, unit: mm is 2 ；
A-measured fracture surface intersects the core cross-section at an angle, in units: degree.
The device has the advantages of simple structure, convenience in fixation, convenience in operation, safety and reliability, can adapt to various field conditions, can detect the bonding strength between the sprayed concrete and the rock contact surface, has important significance for improving the detection accuracy and efficiency, reducing the detection cost and ensuring the support quality of the sprayed concrete, and is suitable for wide popularization and application.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a portable shotcrete bonds intensity testing arrangement, its characterized in that includes fixing device, chute board, bores core device and bonding strength survey device, fixing device fixed mounting is on the rock face, chute board fixed mounting be in fixing device is last, bore core device and slide and set up on the chute board, bonding strength survey device slides and sets up on the chute board.
2. The portable shotcrete bonding strength testing device of claim 1, wherein the sliding plate includes a sliding plate body and two first limit bolts, the sliding plate body is mounted on the fixing device through bolts, trapezoidal sliding grooves are symmetrically formed in the sliding plate body, rectangular grooves are formed in the sliding plate body, first through holes are formed in the sliding plate body, observation ports are symmetrically formed in the sliding plate body, first threaded holes are symmetrically formed in two sides of the sliding plate body, the first limit bolts are screwed in the sliding plate body through the first threaded holes, and the first limit bolts penetrate through side walls of the sliding plate body and extend into the trapezoidal sliding grooves.
3. The portable shotcrete bonding strength testing device according to claim 2, wherein the core drilling device includes a first sliding bracket, a second sliding bracket, a drilling machine, a cutting bit, a lead screw, and a locknut, the first sliding bracket is slidably disposed on the chute plate main body, the second sliding bracket is slidably disposed on the first sliding bracket, the drilling machine is fixedly disposed on the second sliding bracket, the drilling machine is communicated with an external power source through a wire, the cutting bit is detachably disposed on the drilling machine, the lead screw is rotatably disposed on the second sliding bracket, the locknut is disposed at the bottom of the lead screw, and a handle is disposed at the tail of the lead screw.
4. The portable shotcrete bonding strength testing device of claim 2, wherein the first sliding bracket comprises a first sliding plate, a guide rod, a tail mounting plate and a second limit bolt, the guide rod is symmetrically arranged on the first sliding plate, the tail mounting plate is fixedly mounted at the tail end of the guide rod, the second limit bolt penetrates through the first sliding plate and is in threaded connection with the first sliding plate, the diameter of the second limit bolt is the same as the width of the rectangular groove on the sliding groove plate main body, and the position of the second limit bolt corresponds to the rectangular groove.
5. The portable shotcrete bonding strength testing device of claim 4, wherein the first sliding plate is further symmetrically provided with a first trapezoidal sliding block and a third threaded hole, the first trapezoidal sliding block is matched with the trapezoidal sliding groove for use, and the third threaded hole is matched with the first limiting bolt and the first threaded hole for use.
6. The portable shotcrete bonding strength testing device of claim 2, wherein the bonding strength measuring device comprises a third sliding support, an anchor rod drawing instrument and a clamp, the third sliding support is slidably arranged on the sliding groove plate main body, the anchor rod drawing instrument is fixedly arranged on the third sliding support, the anchor rod drawing instrument is connected with an external pressurizing device through a pipeline, and the clamp is arranged at the tail of the anchor rod drawing instrument.
7. The portable shotcrete bonding strength testing device of claim 6, wherein the third sliding support includes a third sliding plate, a supporting rod, a first mounting plate, a second mounting plate and a third limiting bolt, the supporting rod is symmetrically disposed on the third sliding plate, the first mounting plate is fixedly mounted at the middle section of the supporting rod, the second mounting plate is mounted at the tail of the supporting rod, the third limiting bolt passes through the third sliding plate and is in threaded connection with the third sliding plate, the diameter of the third limiting bolt is the same as the width of the rectangular groove on the main body of the chute plate, and the position of the third limiting bolt corresponds to the rectangular groove.
8. The portable shotcrete bonding strength testing device of claim 7, wherein a second trapezoidal sliding block and a fourth threaded hole are symmetrically arranged on the third sliding plate, the second trapezoidal sliding block is matched with the trapezoidal sliding groove for use, and the fourth threaded hole is matched with the first limiting bolt and the first threaded hole for use.
9. The portable shotcrete bonding strength testing device of claim 1, wherein the fixing device comprises a bearing plate and expansion bolt sets, the expansion bolt sets are arranged at four corners of the bearing plate, and circular holes are arranged on the bearing plate.
10. The portable shotcrete bonding strength testing device of claim 9, wherein the expansion bolt set includes an expansion bolt shaft, a first adjusting nut and a second adjusting nut, a tail end of the expansion bolt shaft passes through the bearing plate, and the first adjusting nut and the second adjusting nut are respectively disposed at two ends of the bearing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210758177.2A CN114965062A (en) | 2022-06-29 | 2022-06-29 | Portable device for testing bonding strength of sprayed concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210758177.2A CN114965062A (en) | 2022-06-29 | 2022-06-29 | Portable device for testing bonding strength of sprayed concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114965062A true CN114965062A (en) | 2022-08-30 |
Family
ID=82967173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210758177.2A Pending CN114965062A (en) | 2022-06-29 | 2022-06-29 | Portable device for testing bonding strength of sprayed concrete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114965062A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116296904A (en) * | 2023-02-22 | 2023-06-23 | 廊坊市阳光建设工程质量检测有限公司 | Device for detecting compressive strength of concrete by in-situ axial pressure and application method |
-
2022
- 2022-06-29 CN CN202210758177.2A patent/CN114965062A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116296904A (en) * | 2023-02-22 | 2023-06-23 | 廊坊市阳光建设工程质量检测有限公司 | Device for detecting compressive strength of concrete by in-situ axial pressure and application method |
| CN116296904B (en) * | 2023-02-22 | 2023-10-31 | 廊坊市阳光建设工程质量检测有限公司 | Device for detecting compressive strength of concrete by in-situ axial pressure and application method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114965062A (en) | Portable device for testing bonding strength of sprayed concrete | |
| CN203848966U (en) | Impactor impact force detection device | |
| CN105352884A (en) | Experiment method and experiment member for testing bond strength of concrete and coal, rock or concrete | |
| US20180364377A1 (en) | Test system for microseismic test of rock mass fractures | |
| CN105444925A (en) | Device and method for installing borehole stressmeter | |
| CN106090577B (en) | A kind of aerological measurement assistance platform | |
| CN109917403A (en) | Drilling tool precise measurement positioning device and rotary drilling rig and operating method | |
| CN212513994U (en) | Be used for concrete strength detection device | |
| CN217738862U (en) | Portable device for testing bonding strength of sprayed concrete | |
| CN113008612A (en) | A drilling coring device for early age concrete | |
| CN111663786A (en) | Construction auxiliary tool for controlling thickness of concrete and using method thereof | |
| CN106644889A (en) | Rock joint seepage device with controllable gap width under high seepage pressure | |
| CN217155906U (en) | Core bit for detecting road surface quality of highway engineering | |
| CN114046142B (en) | Efficient measuring device for tunnel blasting drilling angle | |
| CN206161311U (en) | Online calibration system of relief valve | |
| CN115596240A (en) | Concrete crack noninvasive repair grouting complete device and method | |
| CN214150230U (en) | Concrete quality safety monitoring device for building | |
| CN209247513U (en) | For measuring the mechanism of curtain wall anti-pull-out property | |
| CN205938437U (en) | Auxiliary platform is measured in high altitude | |
| CN212507456U (en) | A construction appurtenance for concrete thickness control | |
| CN2196289Y (en) | Piston type multi-point extensometer | |
| CN211172115U (en) | Miniature steel-pipe pile body soil pressure and displacement monitoring device | |
| CN209542320U (en) | Architectural vibration-insulation rubber tube tangential displacement test device | |
| CN215052097U (en) | Multifunctional bridge detection tool | |
| CN202770446U (en) | Quick anchoring convergence measuring point |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |