CN214844723U - Test device for overall on-site drawing of external thermal insulation system of external wall - Google Patents
Test device for overall on-site drawing of external thermal insulation system of external wall Download PDFInfo
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Abstract
The utility model discloses a test device that whole scene of external thermal insulation system was drawn, include: the device comprises a test board, a counter-force support, a screw, a feed-through jack and an oil pressure drawing instrument, wherein the counter-force support comprises two counter-force support parts and a counter-force connecting part; through the oil pressure drawing instrument, the straight-through jack generates a pulling force, and the pulling force is transmitted to the test board through the screw rod, so that the test board moves towards the direction of the counter-force connecting part. The utility model discloses compensate current detection method's limitation, can reflect the outer heat preservation construction quality of outer wall more really, promote relevant detection area's technical level, satisfy the whole demand of judging of some customers to the outer heat preservation construction quality of outer wall.
Description
Technical Field
The utility model relates to a building outer wall external insulation field specifically is a test device that whole scene of external thermal insulation system was drawn.
Background
The external thermal insulation system of the external wall is a thermal insulation system which arranges a thermal insulation layer on the external surface of the external wall. The non-bearing heat-insulating structure is composed of a heat-insulating plate, a protective layer and fixing materials (adhesive, anchoring parts and the like) and is arranged on the outer surface of an outer wall.
And (4) performing field drawing test on the external thermal insulation system of the external wall and the base layer. During field test, steel standard blocks of 95mm multiplied by 45mm are adopted, each group is provided with 5 test pieces, and each group is inspected by at least 500-1000 m2 heat preservation area. The method comprises the following steps: 1) and pasting a standard block. Firstly, selecting a detection part, determining the pasting method and the distribution of pasting positions of the insulation board, removing the exterior finish, cleaning the stains on the outer surface of the insulation board within the pasting range of the standard block, uniformly coating the adhesive on the surface of the insulation board and the pasting surface of the standard block, and pasting the standard block on the surface of the insulation board. When the standard block is pasted, the standard block is pasted at the position of the bonding mortar as much as possible, and the position of the bonding mortar can be conveniently determined near the pasting area ratio inspection part. 2) The bond strength was measured. After the adhesive was cured, the bond strength was measured. During measurement, a cutting saw is firstly used for cutting the insulation board sample along the edge of the standard block, the broken joint is vertically cut from the surface of the sample to the surface of the bonding mortar or the matrix, and the periphery of the sample cannot be connected with the original insulation board. Secondly, installing a drawing instrument, placing a base plate below a support leg of the drawing instrument, loading at a constant speed until the sample is damaged, and recording a peak value and a damage state.
In recent years, external thermal insulation systems for external walls have become a popular thermal insulation construction method at present. However, as the external thermal insulation engineering of the external wall is more and more, a series of quality problems also occur. Such as cracks, hollowing and even falling off of the external heat-insulating decorative surface layer. The reasons for causing the external thermal insulation hollowing, the cracks and the falling of the thermal insulation boards are various, and various links from design, materials to construction and the like are possible, for example, the structural design of the thermal insulation system is insufficient, the used materials of the thermal insulation system are unqualified, in addition, the external wall thermal insulation system is usually completed on the construction site of the building engineering, and the quality of the construction quality is related to the quality of the external wall thermal insulation system. Aiming at the problems and the encountered engineering situations, the field detection method and the steps which are mainly adopted are as follows: the method comprises the steps of drilling and coring of an energy-saving structure of the outer wall, field drawing of the bonding strength of an outer wall insulation board and a base layer, the bonding area ratio of the outer wall insulation board and the base layer, a bonding method, the drawing force of a post-positioned anchoring part of the insulation board, the quantity inspection of the anchoring part and the like.
The drawing test of the external wall insulation board and the base layer adopts a destructive inspection method. The quality of the bonding of the external wall insulation board is closely related to the service life of the external wall insulation board. In addition, extreme climates frequently appear in recent years, and some engineering external heat insulation layers even directly fall off when strong wind blows.
The pasting method of the heat-insulating plate can adopt a point frame method or a strip pasting method according to the requirements of the technical code of external wall heat-insulating construction (the polyphenyl plate reinforced mesh polymer mortar manufacturing method) (DB 11/T584-. No matter which sticking method is adopted, the polystyrene board and the wall surface are firmly stuck without loosening and virtual sticking phenomena. When the coating is used for surface finishing, the bonding area rate is not less than 40 percent; when the face brick is used for facing, the bonding area rate is not less than 50%. And (3) selecting the outer wall surface about 1m2 when checking the pasting method and the bonding area ratio, firstly removing the outer decorative surface to expose the insulation board, then uncovering a whole insulation board, checking the pasting method, and measuring the bonding area of the bonding mortar.
And carrying out field test on the tensile bonding strength of the heat-insulating plate and the base layer. During field test, steel standard blocks of 95mm multiplied by 45mm are adopted, each group is provided with 5 test pieces, and each group is inspected by at least 500-1000 m2 heat preservation area. The method comprises the following steps: 1) and pasting a standard block. Firstly, selecting a detection part, determining the pasting method and the distribution of pasting positions of the insulation board, removing the exterior finish, cleaning the stains on the outer surface of the insulation board within the pasting range of the standard block, uniformly coating the adhesive on the surface of the insulation board and the pasting surface of the standard block, and pasting the standard block on the surface of the insulation board. When the standard block is pasted, the standard block is pasted at the position of the bonding mortar as much as possible, and the position of the bonding mortar can be conveniently determined near the pasting area ratio inspection part. 2) The bond strength was measured. After the adhesive was cured, the bond strength was measured. During measurement, a cutting saw is firstly used for cutting the insulation board sample along the edge of the standard block, the broken joint is vertically cut from the surface of the sample to the surface of the bonding mortar or the matrix, and the periphery of the sample cannot be connected with the original insulation board. Secondly, installing a drawing instrument, placing a base plate below a support leg of the drawing instrument, loading at a constant speed until the sample is damaged, and recording a peak value and a damage state. The bond strength of each sample should be calculated according to the formula.
In the formula, σt-tensile strength, MPa;
Pt-breaking the load, N;
a-area of sample, mm2
The test results are expressed as the arithmetic mean of 5 test data. And comparing the result of the average value with a design value or a standard value so as to judge the condition of the bonding strength of the insulation board and the base layer according with the design value.
The anchoring piece plays a role in enhancing the connection between the heat-insulating layer and the base layer wall in the external heat insulation of the building outer wall. External thermal insulation systems for exterior walls are typically designed with a post-anchor for the thermal insulation board. The technical code of external wall external thermal insulation construction (the method for manufacturing polyphenyl plate reinforced mesh polymer mortar) (DB 11/T584 one 2008) clearly stipulates the number of the anchoring parts, and when the decorative surface is coating, the anchoring parts can not be installed at the position below the elevation 20 m; not less than 4/m 2 when the particle size is more than 20m and less than 50 m; preferably, the number of molecules of the molecular sieve is not less than 50m, and not less than 6/m 2.
Factors influencing the pulling force of the anchoring part include the fastening mode, the anchoring depth, the type of the base wall material and the like of the anchoring part. The building external thermal insulation anchoring piece used in the existing external thermal insulation engineering is divided into two types according to fastening modes, wherein one type is a screw-in self-nut fastening type. The plastic sleeve is mainly tied and expanded to play an anchoring role when a metal countersunk self-tapping screw subjected to corrosion prevention treatment is screwed in: the other is a knock-in expansion fastening type, which mainly depends on the expansion of the working part of the plastic sleeve when a plastic expansion nail or a metal expansion nail subjected to corrosion prevention treatment is knocked in so as to play a role in anchoring.
The post-positioned anchoring parts of the heat-insulation plate are mainly checked for the drawing force and the number of the anchoring parts. The anchor drawing force detection mainly adopts a drawing instrument to draw the anchor bolt out of the base wall, and the peak value displayed by the drawing instrument is the anti-drawing bearing capacity of the anchor bolt. Every heat preservation area of at least 500-1000 m2 is checked to be a group, and each group is 3 anchor bolts. And evaluating the test result that the minimum value of the single pulling-resistant bearing capacity of each group of the heat-preservation anchor bolts is not lower than the design value, namely the heat-preservation anchor bolts are qualified or meet the design requirement. The number of anchors was checked by randomly peeling off 1m2 of the outer wall finish, looking at the number of anchors. Usually, for the convenience of external wall heat preservation maintenance, the quantity of the anchoring parts is checked while the bonding area rate of the heat preservation plate and the base layer bonding mortar is checked.
At present, an on-site detection project for controlling the external thermal insulation construction quality of an external wall mainly aims at tensile tests of different materials, and an integral drawing detection project of an external thermal insulation system of the external wall is not provided. The tensile test of the material has certain limitation, the tensile strength of the whole body is determined by the tensile test of the material, and the whole construction quality of the external thermal insulation system of the external wall cannot be truly reflected.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model discloses a test device that whole scene of external thermal insulation system was drawn can evaluate the whole construction quality of external thermal insulation system.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a test device that whole scene of external thermal insulation system was drawn, includes:
a test plate (1) comprising a bolt base (11) arranged at the geometrical center of the plane at the back side of the test plate (1); the reaction support frame (2) comprises two reaction support parts (21) and a reaction connecting part (22), and a connecting part through hole (23) is formed in the connecting part (22);
the feed-through jack (5) comprises an oil pipe connecting part (51) and a feed-through jack cylinder body (52), and one end of the feed-through jack cylinder body (52) is abutted against the counter-force connecting part (22);
the oil pressure drawing instrument (6), the oil pressure drawing instrument (6) is fixedly connected with the oil pipe connecting part (51);
one end of the screw rod (3) penetrates through the connecting part through hole (23) and is fixedly connected with the bolt base (11), the other end of the screw rod (3) is in threaded connection with the through jack cylinder body (52), and the screw rod (3) is perpendicular to the back plane of the test plate (1);
the hydraulic drawing instrument (6) is used for generating a pulling force by the straight-through jack (5), and the pulling force is transmitted to the test plate (1) through the screw rod (3), so that the test plate (1) moves towards the direction of the counter force connecting part (22).
Furthermore, a reinforcing frame (12) is arranged on the back plane of the test board (1).
Further, the bolt base (11) is provided on the reinforcing frame (12).
Further, the material of the test board (1) comprises: cast iron or alloy steel.
Further, one end of the screw rod (3) is fixedly connected with the bolt base (11) through the following structure:
a bolt base through hole (13) is formed in the middle of the bolt base (11), and a bolt base hole is formed in the top of the bolt base (11);
the end of the screw rod (3) is provided with a screw rod through hole (31);
a screw (4);
after the end of the screw rod (3) is inserted into the bolt base (11) through the bolt base opening, a screw (4) is sequentially inserted into the bolt base through hole (13) and the screw rod through hole (31), so that one end of the screw rod (3) is fixedly connected with the bolt base (11).
Compared with the prior art, the utility model has the advantages of it is following:
1) the method makes up the limitation of the existing detection method, and can reflect the external thermal insulation construction quality of the external wall more truly;
2) the technical level of the related detection field can be improved, and meanwhile, the requirement of a part of customers for overall judgment of the external thermal insulation construction quality of the external wall can be met.
Drawings
Fig. 1 is a perspective view of the present invention.
Fig. 2 is a plan view of the middle test plate and the counter-force support frame of the present invention.
Wherein, 1: a test plate; 11: a screw base; 12: a reinforcing frame; 13: a screw base through hole; 2: a counter-force support frame; 21: a reaction frame support portion; 22: a reaction frame connecting part; 23: a connecting portion through hole; 3: a screw; 31: a screw through hole; 4: a screw; 5: a feed-through jack; 51: an oil pipe connection part; 52: a feed-through jack cylinder; 6: oil pressure drawing instrument.
Detailed Description
In order to make the technical solutions in the embodiments of the present invention better understood and make the objects, features and advantages of the present invention more obvious and understandable, the technical core of the present invention will be described in further detail with reference to the accompanying drawings and examples.
The utility model discloses a test device, as shown in fig. 1 and fig. 2, mainly by the test board, the counter-force support, the screw rod, the screw, components such as appearance are drawn to punching jack and oil pressure are constituteed, wherein the test board passes through screw and counter-force leg joint, can guarantee through adjusting screw that counter-force support's loading end keeps perpendicular with outer heat preservation outside the outer wall, install the jack on counter-force support and form jack counter-force system, during the experiment, it is firm with outer heat preservation system and test board bonding, be connected counter-force support and test board through the screw rod again, then the screw rod is fixed with the jack, adjusting screw is in order to ensure perpendicular atress again. And applying a pulling force to the jack through the drawing instrument, so that the pulling force is transmitted to the test board, and the outer wall external thermal insulation system and the base layer wall body are pressurized at a constant speed until the outer wall external thermal insulation system and the base layer wall body fall off.
1. Composition of the test device
According to the above principle, the utility model discloses a test device, concrete component part is: the test board (1200mm is multiplied by 600mm), a counter-force support, a screw, a feed-through jack and an oil pressure drawing instrument.
The parts of the device function as follows:
(1) test plate (1200 mm. times.600 mm) function: the front surface of the test board is bonded and fixed with the external thermal insulation material of the external wall, and the back surface of the test board is connected with the counter-force support, the screw and the screw.
(2) The reaction support frame acts as follows: the device is characterized by comprising a reaction support and a wall base, wherein the reaction support is composed of two groups of cross beams and a group of longitudinal beams, two ends of each longitudinal beam are respectively welded and connected with a group of cross beams to form a C-shaped framework, the two groups of cross beams are respectively in vertical contact with an external thermal insulation wall of a tested external wall to form a structure with the tested wall as the base and the C-shaped framework as the reaction frame.
(3) The screw and the bolt act: one end of the screw rod, which is provided with a fixing ring, is connected with the counter-force support and the test plate, and the jack is sleeved from the other end of the screw rod and is connected with the oil pressure drawing instrument. The screw is a key part for connecting the used components. The screws are used for fixing all the parts connected by the screws, so that the whole device keeps integrity, and the whole stress can be transmitted to the outer heat-insulating wall body of the outer wall of the north side.
(4) The penetrating jack and the oil pressure drawing instrument act as follows: the penetrating type jack is sleeved with the screw and then fixed, an oil pipe of the oil pressure drawing instrument is connected with an oil pipe interface of the jack, acting force is applied to the whole device through the oil pressure drawing instrument until the external wall external heat insulation system completely falls off from a base layer wall body, the applied force value is recorded at the same time, the force value is compared with a wind load resistance test value, and if the force value is larger than the wind load resistance test value, the external wall external heat insulation system meets the whole drawing requirement.
2. Connection mode of test device
Firstly, adhering a test board and a tested external thermal insulation system by using epoxy resin AB glue; secondly, after the test board is firmly bonded with the external thermal insulation system of the external wall, placing the counter-force bracket perpendicular to the external thermal insulation system of the external wall; thirdly, connecting the test board, the counter-force bracket and the screw rod by using screws, and finely adjusting the screws to ensure that the screw rod is perpendicular to the tested external heat-insulating wall surface; and finally, sleeving the screw rod into the jack, and connecting the oil pressure drawing instrument with the jack. The whole device is connected.
3. Selection of test plate Material
The magnitude of the drawing force required to be born by the device is determined according to the theoretical calculation of wind load, and the material of the test plate is selected according to the magnitude of the drawing force. The wind load test value is 3.96kN/m2, the pulling resistance of the test plate is controlled to be 5 times of the test value, the pulling value to be borne is 19.8kN/m2, the size of the test plate is consistent with that of a standard heat insulation plate and is 1200mm multiplied by 600mm, and the pulling value is finally determined to be 14.3 kN. We selected the material of the test panel based on this draw value. The comparison of the different materials is shown in table 1:
TABLE 1
According to the characteristics, the alloy steel plate is selected as the material of the test plate, the effect of the alloy plate can still meet the test requirement after repeated tests, but in order to prevent the slight influence of the small deformation of the alloy test plate on the test result, a transverse and longitudinal beam for preventing deformation is added behind the test plate, so that the test plate is ensured not to deform during drawing, the test plate and the tested heat-insulating material form a whole, and a good test effect is achieved.
3. Selection of counter-force support, screw and screw dimensions
The selection of the dimensions of the counter-force bracket, the screw and the screw depends on the magnitude of the drawing force, according to the previous measurement and calculation, the drawing value needs to reach about 15kN, and a jack of 2-3 tons needs to be selected. And determining the rigidity requirement of the counter-force bracket according to the tonnage of the jack. And manufacturing a counter-force support according to the rigidity value to be borne. The size of the screw is determined according to the size of the hole of the jack, the screw is an important part for connecting the stress rod pieces, the stress requirement on the screw is stricter, the size of the screw is determined through repeated tests so as to ensure the reliable connection of the whole device, and the drawing force can be transmitted to the test board and the outer heat-insulating material.
4. Selection of jack and oil pressure drawing instrument
The selection of the jack and the oil pressure drawing instrument is also based on the previous measurement and calculation, the drawing force needs to reach about 15kN, and a jack of 2-3 tons needs to be selected. After the jack is determined, the matched oil pressure drawing instrument is matched with the jack.
The manufacture of the whole device is to be thanks to the great support of long-term partners, relevant theoretical requirements are put forward, and the devices are trial-manufactured, tested, debugged according to results, retested and debugged until all requirements of the users are met.
5. Operation process of wind load resistant field test of external thermal insulation system of external wall
1) Simulating an external wall external insulation system on a concrete wallboard by a laboratory, and bonding a test board with the external wall external insulation system;
2) installing a reaction frame, a screw rod and a screw;
3) connecting the upper jack and the oil pressure drawing instrument;
4) the oil pressure drawing instrument starts to continuously apply force until the external thermal insulation system of the external wall and the base wall fall off;
5) recording the numerical value of the oil pressure drawing instrument, and finishing the whole test process;
6) and comparing the drawing value with the wind load resistance test value to determine whether the whole drawing of the whole external thermal insulation system of the external wall meets the requirement.
Experimental data
1 repeatability verification
Selecting the same thermal insulation material (same brand extruded polystyrene board, specification of 1200mm multiplied by 600mm multiplied by 80mm), bonding material (same brand bonding mortar), anchoring material (same brand anchor, specification of 10 multiplied by 182mm), and the same batch of constructors, and manufacturing 30 sample board walls by the same construction process to ensure the reliability of repeatability verification.
2 extensive applicability verification
Selecting different types of heat insulation materials (extruded polystyrene boards (1200mm multiplied by 600mm multiplied by 80mm), composite polyurethane boards (1200mm multiplied by 600mm multiplied by 60mm), graphite polystyrene boards (1200mm multiplied by 600mm multiplied by 100mm), bonding materials (bonding mortar of the same brand), anchoring materials (anchor bolts of the same brand, 10 multiplied by 182mm, 10 multiplied by 162mm and 10 multiplied by 202mm), the same batch of constructors, manufacturing sample board walls by the same construction process, wherein 10 test pieces are used for each group of test pieces, and 30 sample board walls are used for the total to ensure the reliability of wide applicability verification, and the specific grouping is as the following table 2:
TABLE 2
3 results of implementation
3.1 repeatability verification results
After testing 30 groups of test pieces, the test result of each group of test pieces is detailed in table 3: unit (kN/m2)
| |
1 | 2 | 3 | 4 | 5 | 6 |
| Drawing value | 7.69 | 7.57 | 7.55 | 7.63 | 7.50 | 7.48 |
| Serial number | 7 | 8 | 9 | 10 | 11 | 12 |
| Drawing value | 7.61 | 7.66 | 7.62 | 7.65 | 7.48 | 7.53 |
| |
13 | 14 | 15 | 16 | 17 | 18 |
| Drawing value | 7.37 | 7.44 | 7.69 | 7.76 | 7.81 | 7.64 |
| Serial number | 19 | 20 | 21 | 22 | 23 | 24 |
| Drawing value | 7.55 | 7.48 | 7.52 | 7.47 | 7.69 | 7.76 |
| Serial number | 25 | 26 | 27 | 28 | 29 | 30 |
| Drawing value | 7.88 | 7.56 | 7.49 | 7.96 | 7.55 | 7.56 |
TABLE 3
3.2, results of extensive applicability verification
After testing three groups of test pieces with different heat-insulating materials and different specifications, the test results of each group of test pieces are detailed in table 4 (an extruded polystyrene board group), table 5 (a graphite polystyrene board group) and table 6 (a composite polyurethane board group): units (kN/m 2).
| |
1 | 2 | 3 | 4 | 5 |
| Drawing value | 7.69 | 7.57 | 7.55 | 7.63 | 7.50 |
| |
6 | 7 | 8 | 9 | 10 |
| Drawing value | 7.48 | 7.61 | 7.66 | 7.62 | 7.65 |
TABLE 4
| |
1 | 2 | 3 | 4 | 5 |
| Drawing value | 4.67 | 4.55 | 4.38 | 4.70 | 4.66 |
| |
6 | 7 | 8 | 9 | 10 |
| Drawing value | 4.44 | 4.77 | 4.32 | 4.40 | 4.65 |
TABLE 5
| |
1 | 2 | 3 | 4 | 5 |
| Drawing value | 5.01 | 4.98 | 5.24 | 5.12 | 5.22 |
| |
6 | 7 | 8 | 9 | 10 |
| Drawing value | 5.37 | 4.88 | 4.92 | 5.14 | 5.08 |
TABLE 6
4. Analysis of results
4.1 repeatability validation test results analysis
And after the test is finished, counting the test results of 30 groups of test pieces. The maximum drawdown value was 7.96kN/m2, the minimum drawdown value was 7.37kN/m2, and the average drawdown value was 7.61kN/m 2. And according to the drawing value data statistics, the test data is relatively stable. The repeatability of test results of test pieces made of the same materials and constructed by the same personnel is judged by a Bessel method, the standard deviation of 30 groups of test pieces is 0.134, and the relative standard deviation is 1.76%. From the standard deviations found, we can conclude that the interval (7.61-0.134,7.61+0.134) in which the difference between two measurements under the same reproducibility conditions is present with a probability of 95%, i.e. the probability of the difference between two measurements falling within this interval, is 95%. Therefore, the external wall external thermal insulation integral drawing field drawing device has good repeatability performance and meets the field test requirements.
4.2 extensive applicability verification test results
And after the test is finished, counting the test results of each group of test pieces. The extruded polystyrene board set test results were a maximum of 7.69kN/m2 and a minimum of 7.46kN/m2, with an average of 7.60kN/m 2. The composite polyurethane panel set test results were 5.37kN/m2 maximum and 4.88kN/m2 minimum, with an average of 5.10kN/m 2. The test result of the graphite polyphenyl plate group is maximum 4.77kN/m2, minimum 4.32kN/m2 and average value is 4.55kN/m 2.
According to the drawing statistical data, the test data of each group of the same materials in the drawing values of the external thermal insulation systems of the three groups of different materials and different specifications are stable. And (3) carrying out repeatability judgment on the test result of each group of test pieces by using a Bessel method, wherein the standard deviation of the extruded polystyrene group test pieces is 0.069, and the relative standard deviation is 0.91%. The standard deviation of the composite polyurethane plate set test piece is 0.154, and the relative standard deviation is 3.01%. The standard deviation of the graphite polyphenyl plate group test piece is 0.158, and the relative standard deviation is 3.46%. From the standard deviations found, we can conclude that the interval in which the difference between the two measurements of each set of data occurs with a probability of 95% is (7.60-0.069,7.60+0.069), (5.10-0.154,5.10+0.154), (4.55-0.158, 4.55+0.158), respectively, i.e. the difference between the two measurements falls within this interval or the probability of this difference is 95%. The outer wall external thermal insulation wind load resistant field drawing device has good stability for outer wall external thermal insulation systems of different thermal insulation materials and different sample specifications. Therefore, the external wall external thermal insulation integral drawing field device has good wide applicability and can meet the requirement of the external wall external thermal insulation system integral drawing test of different thermal insulation materials.
The above embodiments are provided only for the purpose of describing the present invention, and are not intended to limit the scope of the present invention. The scope of the invention is defined by the appended claims. Various equivalent substitutions and modifications can be made without departing from the spirit and principles of the invention, and are intended to be within the scope of the invention.
Claims (5)
1. The utility model provides a test device that whole scene of external thermal insulation system was drawn which characterized in that includes:
a test plate (1) comprising a bolt base (11) arranged at the geometrical center of the plane at the back side of the test plate (1);
the reaction support frame (2) comprises two reaction support parts (21) and a reaction connecting part (22), and a connecting part through hole (23) is formed in the connecting part (22);
the feed-through jack (5) comprises an oil pipe connecting part (51) and a feed-through jack cylinder body (52), and one end of the feed-through jack cylinder body (52) is abutted against the counter-force connecting part (22);
the oil pressure drawing instrument (6), the oil pressure drawing instrument (6) is fixedly connected with the oil pipe connecting part (51);
one end of the screw rod (3) penetrates through the connecting part through hole (23) and is fixedly connected with the bolt base (11), the other end of the screw rod (3) is in threaded connection with the through jack cylinder body (52), and the screw rod (3) is perpendicular to the back plane of the test plate (1);
the hydraulic drawing instrument (6) is used for generating a pulling force by the straight-through jack (5), and the pulling force is transmitted to the test plate (1) through the screw rod (3), so that the test plate (1) moves towards the direction of the counter force connecting part (22).
2. The integral field pulling test device for the external thermal insulation system of the external wall of claim 1, wherein a reinforcing frame (12) is further arranged on the back plane of the test board (1).
3. The exterior wall external insulation system integral field pulling test device as claimed in claim 2, wherein the bolt base (11) is arranged on the reinforcing frame (12).
4. The test device for integral field drawing of the external thermal insulation system of the external wall according to claim 1, wherein the material of the test board (1) comprises: cast iron or alloy steel.
5. The integral field drawing test device for the external thermal insulation system of the external wall according to claim 1, wherein one end of the screw (3) is fixedly connected with the bolt base (11) through the following structure:
a bolt base through hole (13) is formed in the middle of the bolt base (11), and a bolt base hole is formed in the top of the bolt base (11);
the end of the screw rod (3) is provided with a screw rod through hole (31);
a screw (4);
after the end of the screw rod (3) is inserted into the bolt base (11) through the bolt base opening, a screw (4) is sequentially inserted into the bolt base through hole (13) and the screw rod through hole (31), so that one end of the screw rod (3) is fixedly connected with the bolt base (11).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116297169A (en) * | 2023-03-10 | 2023-06-23 | 王明波 | On-site drawing test method for bonding strength of external wall insulation board |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116297169A (en) * | 2023-03-10 | 2023-06-23 | 王明波 | On-site drawing test method for bonding strength of external wall insulation board |
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