CN110864837A - Steel nail anchoring force detection device and use method thereof - Google Patents
Steel nail anchoring force detection device and use method thereof Download PDFInfo
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- CN110864837A CN110864837A CN201911157597.XA CN201911157597A CN110864837A CN 110864837 A CN110864837 A CN 110864837A CN 201911157597 A CN201911157597 A CN 201911157597A CN 110864837 A CN110864837 A CN 110864837A
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- steel nail
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
- G01L5/0033—Force sensors associated with force applying means applying a pulling force
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to the field of detecting instruments, and discloses a steel nail anchoring force detecting device which comprises a counter-force supporting frame, a drawing instrument and a pull rod, wherein the pull rod is connected with the counter-force supporting frame; the drawing instrument is positioned above the counter-force support frame; the pull rod vertically penetrates through the drawing instrument and the counter-force support frame, and a universal joint, a force transmission bolt and a steel standard block are sequentially arranged at the lower end of the pull rod; the upper end of the universal joint is hinged with the pull rod, and the lower end of the universal joint is fixedly connected with the force transmission bolt; the lower end of the force transmission bolt is fixedly connected with a steel standard block, an inner groove for accommodating a steel nail cap is formed in the bottom end of the steel standard block, and a steel sheet is further arranged below the steel standard block; the invention also discloses a using method of the detection device; the steel sheet is arranged, and the steel standard block is bonded with the steel sheet by using the adhesive, so that the effect of integrally stressing the steel standard block, the steel sheet and the steel nail is achieved; meanwhile, the steel nail is pulled by the vertically arranged pull rod, so that the accuracy of a detection result is improved.
Description
Technical Field
The invention relates to the field of detection instruments, in particular to a steel nail anchoring force detection device and a using method thereof.
Background
With the development of scientific technology and the improvement of engineering construction scale, the reinforcing and strengthening of the existing engineering structural members also draws wide attention of the engineering industry. The method is characterized in that a nail shooting anchoring rapid reinforcement method is used as a novel reinforcement method which is intensively researched by scholars at home and abroad in recent years, and a nail striker is used for triggering a steel nail to anchor a reinforcement material (such as a carbon fiber plate, a steel plate and the like) on a reinforcement member so as to replace the traditional gluing or anchor bolt connection anchoring, thereby achieving the purposes of simplifying construction procedures and rapidly reinforcing.
However, since the steel nail top cap is basically immersed into the reinforcing material after the steel nail is driven into the reinforcing member, the anchoring force of the steel nail cannot be detected by the conventional force measuring or drawing device, and therefore, how to check the actual anchoring force of the steel nail becomes a difficulty of the rapid reinforcing method of the nail-shooting anchoring.
Therefore, there is a need for a steel nail anchoring force detection device with accurate detection result and less damage to a substrate such as steel, wood or concrete.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a steel nail anchoring force detection device and a using method thereof so as to achieve the effects of accurate detection result and reduction of damage to a base material.
The purpose of the invention is realized by the following technical scheme: a steel nail anchoring force detection device comprises a counter-force support frame, a drawing instrument and a pull rod; the drawing instrument is positioned above the counter-force support frame; the pull rod vertically penetrates through the drawing instrument and the counter-force support frame, and a universal joint, a force transmission bolt and a steel standard block are sequentially arranged at the lower end of the pull rod; the upper end of the universal joint is hinged with the pull rod, and the lower end of the universal joint is fixedly connected with the force transmission bolt; the lower extreme and the steel standard block fixed connection of biography power bolt, the bottom of steel standard block is equipped with the inner groovy that is used for holding the steel nail head of a nail, and the below is equipped with the steel sheet.
According to the technical scheme, the steel sheet is placed on the detection substrate, the steel nail is triggered towards the center of the steel sheet, and the steel standard block and the steel sheet are adhered by using a high-strength adhesive, so that the steel standard block and the steel sheet can be integrally stressed; in addition, the inner groove is formed in the bottom of the steel standard block, so that the protruding steel nail cap is embedded with the inner groove, the lower end of the steel standard block can be tightly attached to a steel sheet with a steel nail, and the effect of improving bonding firmness is achieved; finally, the force transmission bolt is fixedly clamped on the central line of the pull rod through adjusting the height of the vertical pull rod and the angle of the universal joint, so that the damage surface of the detection substrate is 90 degrees relative to the direction of the pulling force, the complexity of the stress is reduced, and the effect of improving the accuracy of the detection result is achieved.
Further, draw the appearance and include hydro-cylinder, hand oil pump and piston, the hydro-cylinder passes through the oil circuit with hand oil pump and links to each other, be equipped with the oil pump rocking handle on the hand oil pump, the piston runs through the top of hydro-cylinder, the piston cover is established on the pull rod.
Further, the upper end cover of pull rod is equipped with the nut, the nut is located the top of piston, nut and pull rod threaded connection.
Further, still include the dynamometer, the dynamometer includes pressure sensor and display screen, pressure sensor is located between piston and the nut, the display screen is located the upper end of drawing the appearance. .
Through the technical scheme, the dynamometer is added, so that the drawing force can be directly checked when the drawing is carried out, and the effect of enabling the detection process to be more visual and simple is achieved.
Further, the steel standard block comprises a square steel standard block or a round steel standard block.
Further, the thickness of the steel standard block is 30-50 mm.
Further, the thickness of the steel sheet is 2-3 mm.
According to the technical scheme, when the thickness of the steel sheet is too small, the steel sheet can be bent and deformed due to too small external rigidity in the process of pulling out the steel nail, so that the actual measurement anchoring force is too large; when the thickness is too large, too much energy is consumed in the process of driving the steel nail, so that the steel nail can not be completely driven into the detection substrate; through limiting the thickness of the steel sheet, the effect of improving the detection accuracy while reducing the energy consumption is achieved.
Further, the steel standard blocks and the steel sheets are made of No. 45 steel.
Through the technical scheme, the No. 45 steel is medium-carbon structural steel, so that the steel has the advantages of good cold and hot processing performance, good mechanical performance, low price and wide source, and the experimental effect is improved.
A method of using the above detection device, comprising the steps of:
s1, selecting and processing a base material: selecting a detection base material with a smooth surface, wherein the detection base material comprises steel, wood or concrete;
s2, selecting an injection point: making diagonal lines on the steel sheet, and taking the intersection point of the two diagonal lines as the injection point of the steel nail;
s3, steel nail percussion: placing the steel sheet on the surface of the detection substrate, and aligning the injection click steel nail;
s4, bonding: bonding the steel standard block with a steel sheet injected into a steel nail by using an adhesive, wherein a nail cap of the steel nail is embedded with the inner groove, and placing for more than 7 days after bonding;
s5, installation and detection: and installing the detection device, shaking the oil pump rocking handle at a constant speed to continuously load until the steel nail is pulled out, recording the load value displayed by the dynamometer when the steel nail is pulled out, and observing the damage form of the detection substrate.
Further, in S5, the time for continuously loading until the steel nail is pulled out is 1-1.5 min.
The invention has the beneficial effects that:
1. according to the steel nail anchoring force detection device, the steel sheet is arranged between the steel nail and the detection substrate, and the steel standard block and the steel sheet are bonded by using the high-strength adhesive, so that the effect of integrally stressing the steel nail, the steel sheet and the steel standard block is achieved.
2. According to the steel nail anchoring force detection device, the inner groove is formed in the bottom of the steel standard block, so that the protruding steel nail cap is located in the inner groove, the lower end of the steel standard block can be tightly attached to a steel sheet with a steel nail, and the effect of improving bonding firmness is achieved.
3. According to the steel nail anchoring force detection device, the steel nail is pulled through the pull rod and the universal joint which are vertically arranged, so that the detection substrate damage surface and the pull direction form 90 degrees, and the effect of improving the detection result accuracy is achieved.
4. According to the steel nail anchoring force detection device, the dynamometer is added, and the effect of enabling the detection process to be more visual and simple is achieved.
Drawings
FIG. 1 is a schematic view of the steel nail anchoring force detecting apparatus according to the present invention;
FIG. 2 is a schematic view of the drawing apparatus of the present invention;
in the figure, 1, a detection substrate; 2. steel nails; 3. a steel sheet; 4. a pull rod; 5. a steel standard block; 6. a counter-force support frame; 7. a universal joint; 8. a drawing instrument; 9. an oil pump rocking handle; 10. a force measuring meter; 11. a nut; 12. an oil cylinder; 13. a hand-operated oil pump; 14. A force transfer bolt; 15. a piston.
Detailed Description
The technical solutions of the present invention are further described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following.
Example 1
A steel nail anchoring force detection device is shown in figures 1-2 and comprises a counter-force support frame 6, a drawing instrument 8 and a pull rod 4; the drawing instrument 8 is positioned above the counter-force support frame 6, and the pull rod 4 vertically penetrates through the drawing instrument 8 and the counter-force support frame 6; the drawing instrument 8 comprises an oil cylinder 12, a hand oil pump 13 and a piston 15, wherein the oil cylinder 12 is connected with the hand oil pump 13 through an oil way, the hand oil pump 13 is provided with an oil pump rocking handle 9, and the piston 15 penetrates through the top end of the oil cylinder 12 and is sleeved on the pull rod 4; the upper end of the pull rod 4 is sleeved with a nut 11, the nut 11 is positioned above the piston 15, and the lower end of the pull rod is sequentially provided with a universal joint 7, a force transmission bolt 14 and a steel standard block 5; one end of the universal joint 7 is hinged with the lower end of the pull rod 4, and the other end is clamped with the upper end of the force transmission bolt 14; the lower end of the force transmission bolt 14 is in threaded connection with the top of the steel standard block 5; the steel nail 2 is pulled by the vertically arranged pull rod 4, so that the complexity of stress is reduced, and the effect of improving the accuracy of a detection result is achieved; the other end of the steel standard block 5, which is far away from the force transmission bolt 14, is also provided with an inner groove for accommodating the nail cap of the steel nail 2, so that the lower end of the steel standard block 5 can be embedded with the nail cap of the protruded steel nail 2 and tightly attached to the steel sheet 3, and the effect of improving the bonding firmness is achieved; the steel standard block 5 is also provided with a steel sheet 3 with the thickness of 3mm at the other end far away from the pull rod 4, and the steel standard block 5 is bonded with the steel sheet 3 injected into the steel nail 2 by using a high-strength adhesive, so that the steel standard block 5, the steel sheet 3 and the steel nail 2 are stressed integrally, and the effect of detecting the anchoring force of the steel nail is achieved; wherein, the steel standard blocks 5 and the steel sheets 3 are made of No. 45 steel; the detection device is also provided with a digital dynamometer 10 which comprises a pressure sensor and a display screen, wherein the pressure sensor is positioned between the piston 15 and the nut 11, and the display screen is positioned at the upper end of the drawing instrument 8, so that the drawing force can be directly checked when drawing, and the effect of enabling the detection process to be more visual and simple is achieved.
The implementation principle of the embodiment is as follows: after the steel nail 2 is driven into the steel sheet 3 and the detection substrate 1, the steel sheet 3 is adhered to the steel standard block 5 by using an adhesive; then installing the device, shaking the oil pump rocking handle 9, continuously injecting hydraulic oil in the hand oil pump 13 into the oil cylinder 12, jacking the piston 15 in the oil cylinder 12 and the nut 11 in threaded connection with the pull rod 4 under the pressure action of the hydraulic oil, and driving the pull rod 4 to move upwards, so that the steel nail 2 and the steel sheet 3 are pulled out of the detection substrate 1 together; and when the anchor is pulled out, the pulling-out force on the digital force measuring meter 10 is read out, and the size of the anchoring force is obtained according to the relation between the maximum pulling-out force and the anchoring force.
Example 2
A method of using the above detection device, comprising the steps of:
s1, selecting and processing a base material: selecting a substrate with a smooth surface, removing surface stains and keeping dry to obtain a detection substrate 1; the detection substrate 1 comprises steel, wood or concrete;
s2, selecting an injection point: in order to ensure that the steel sheet 3 and the steel standard block 5 can be effectively bonded after the steel nail 2 is driven into the steel sheet 3 and the base material 1 is detected, the position of the steel nail 2 is positioned, namely, diagonal lines are formed on the steel sheet 3, and the intersection point of the two diagonal lines is taken as the injection point of the steel nail 2;
s3, triggering the steel nail 2: placing a steel sheet 3 on the surface of the detection substrate 1, and firing the steel nails 2 aiming at the injection point;
s4, bonding: a fast-curing and high-strength adhesive is selected to bond the steel standard block 5 and the steel sheet 3 injected into the steel nail 2, wherein the nail cap of the steel nail 2 is embedded with the inner groove of the steel standard block 5, and the steel standard block is fixed immediately after bonding and is placed for more than 7 days;
s5, installing a force transmission bolt 14: connecting the force transmission bolt 14 with the top of the steel standard block 5 through threads;
s6, an installation device: the device is installed, so that the pull rod 4 is positioned right above the force transmission bolt 14, the height of the pull rod 4 and the angle of the universal joint 7 are adjusted, the upper end of the force transmission bolt 14 is clamped with the universal joint 4, and the nut 11 is sleeved on the upper end of the pull rod in a screwed mode to fix the height of the pull rod 4;
s7, detection: and (3) shaking the rocking handle 9 of the oil pump at a constant speed to continuously load until the steel nail 2 is pulled out, controlling the time required for continuously loading until the steel nail is pulled out to be 1-1.5 min, recording the load value displayed by the digital force measuring meter 10 when the steel nail is pulled out, and observing and detecting the damage form of the base material 1.
The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a steel nail anchoring force detection device which characterized in that: comprises a counter-force support frame (6), a drawing instrument (8) and a pull rod (4); the drawing instrument (8) is positioned above the counter-force support frame (6); the pull rod (4) vertically penetrates through the drawing instrument (8) and the counter-force support frame (6), and the lower end of the pull rod (4) is sequentially provided with a universal joint (7), a force transmission bolt (14) and a steel standard block (5); the upper end of the universal joint (7) is hinged with the pull rod (4), and the lower end of the universal joint is fixedly connected with the force transmission bolt (14); the lower extreme and steel standard block (5) fixed connection of biography power bolt (14), the bottom of steel standard block (5) is equipped with the inner groovy that is used for holding steel nail (2) nail cap, and the below still is equipped with steel sheet (3).
2. The steel nail anchoring force detecting device according to claim 1, wherein: drawing appearance (8) and including hydro-cylinder (12), hand oil pump (13) and piston (15), hydro-cylinder (12) link to each other through the oil circuit with hand oil pump (13), be equipped with oil pump rocking handle (9) on hand oil pump (13), the top of hydro-cylinder (12) is run through in piston (15), piston (15) cover is established on pull rod (4).
3. The steel nail anchoring force detecting device according to claim 2, wherein: the upper end of the pull rod (4) is sleeved with a nut (11), the nut (11) is located above the piston (15), and the nut (11) is in threaded connection with the pull rod (14).
4. The steel nail anchoring force detecting device according to claim 3, wherein: still include dynamometer (10), dynamometer (10) includes pressure sensor and display screen, pressure sensor is located between piston (15) and nut (11), the display screen is located the upper end of drawing appearance (8).
5. The steel nail anchoring force detecting device according to claim 4, wherein: the steel standard blocks (5) comprise square steel standard blocks or round steel standard blocks.
6. The steel nail anchoring force detecting device according to claim 4, wherein: the thickness of the steel standard block (5) is 30-50 mm.
7. The steel nail anchoring force detecting device according to claim 4, wherein: the thickness of the steel sheet (3) is 2-3 mm.
8. The steel nail anchoring force detecting device according to claim 4, wherein: the steel standard block (5) and the steel sheet (3) are made of No. 45 steel.
9. A method of using the detection device according to any one of claims 4 to 8, wherein: the method comprises the following steps:
s1, selecting and processing a base material: selecting a detection base material (1) with a smooth surface, wherein the detection base material (1) comprises steel, wood or concrete;
s2, selecting an injection point: diagonal lines are formed on the steel sheet (3), and the intersection point of the two diagonal lines is taken as the injection point of the steel nail (2);
s3, triggering the steel nail (2): placing the steel sheet (3) on the surface of the detection base material (1) and aligning the injection click steel nail (2);
s4, bonding: bonding the steel standard block (5) with a steel sheet (3) injected into the steel nail (2) by using an adhesive, wherein the nail cap of the steel nail (2) is embedded with the inner groove, and placing for more than 7 days after bonding;
s5, installation and detection: and installing the detection device, shaking the oil pump rocking handle (9) at a constant speed to continuously load until the steel nail (2) is pulled out, recording a load value displayed by the force measuring meter (10) when the steel nail is pulled out, and observing the damage form of the detection substrate (1).
10. The method of claim 9, wherein: and S5, continuously loading until the steel nail (2) is pulled out for 1-1.5 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911157597.XA CN110864837A (en) | 2019-11-22 | 2019-11-22 | Steel nail anchoring force detection device and use method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911157597.XA CN110864837A (en) | 2019-11-22 | 2019-11-22 | Steel nail anchoring force detection device and use method thereof |
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| CN110864837A true CN110864837A (en) | 2020-03-06 |
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| CN201911157597.XA Pending CN110864837A (en) | 2019-11-22 | 2019-11-22 | Steel nail anchoring force detection device and use method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116840138A (en) * | 2023-09-01 | 2023-10-03 | 中铁十七局集团第二工程有限公司 | Three-pipe communicating vessel type reinforcing steel bar anodic polarization test device |
| CN117309213A (en) * | 2023-11-30 | 2023-12-29 | 上海建工集团股份有限公司 | Nondestructive testing equipment and method for wood structure |
-
2019
- 2019-11-22 CN CN201911157597.XA patent/CN110864837A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116840138A (en) * | 2023-09-01 | 2023-10-03 | 中铁十七局集团第二工程有限公司 | Three-pipe communicating vessel type reinforcing steel bar anodic polarization test device |
| CN116840138B (en) * | 2023-09-01 | 2023-12-12 | 中铁十七局集团第二工程有限公司 | Three-pipe communicating vessel type reinforcing steel bar anodic polarization test device |
| CN117309213A (en) * | 2023-11-30 | 2023-12-29 | 上海建工集团股份有限公司 | Nondestructive testing equipment and method for wood structure |
| CN117309213B (en) * | 2023-11-30 | 2024-02-09 | 上海建工集团股份有限公司 | Nondestructive testing equipment and method for wood structure |
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