A bidirectional sliding test device for bonding tensile strength of building materials

Abstract

The present invention proposes a bidirectional sliding test device for the tensile strength of bonding of building materials, which specifically relates to the technical field of building material testing equipment, and includes a bracket, and the two ends of the bracket are respectively provided with a clamping structure for clamping and fixing building materials and a tensile test assembly for detecting tensile strength, and the tensile test assembly is in contact with the clamping structure; and also includes a compression test assembly for detecting compressive strength, and the compression test assembly includes a downward pressure structure and a supporting structure respectively arranged on the upper and lower sides of the building material, and the downward pressure structure near one end of the building material is linked with the clamping structure near the other end thereof, and the downward pressure structure near the other end of the building material is linked with the clamping structure near one end thereof, and the two ends of the building material are respectively provided with supporting structures. The bidirectional sliding test device for the tensile strength of bonding of building materials provided by the present invention can test the tensile properties of different parts of building materials in a simple and efficient manner, and can also perform a splitting test.

Description

Technical Field

[0001] The invention belongs to the technical field of building material testing equipment, and in particular relates to a bidirectional sliding test device for the bonding tensile strength of building materials. Background Art

[0002] As the most widely used structural type in contemporary civil and water conservancy projects, concrete structures are widely used in water conservancy projects, civil buildings, roads and bridges, marine engineering and ports, nuclear power plants and military protection projects. Among the methods of strengthening concrete structures, increasing the cross-section method and the outer steel method are relatively mature and widely used reinforcement measures, while emerging reinforcement methods such as the method of gluing glass fiber reinforced plates and the method of gluing carbon fiber reinforcement are relatively reliable methods.

[0003] However, the above methods all involve the bonding of one or more materials to achieve the purpose of reinforcement. At the same time, some non-load-bearing structures in new construction projects, such as non-load-bearing walls in buildings, are formed by blocks and assisted by cement binders, and some load-bearing structures of buildings, such as masonry retaining walls, use cement mortar to bond stone slabs.

[0004] So far, there are still the following problems in the research on the tensile properties of bonding between building materials: First, when conducting tensile tests on building materials, only a certain part of the building materials is often stretched, so the tensile properties of other parts of the building materials are not clear, and it is impossible to judge whether the mechanical properties of various parts of the building materials are consistent; second, the tensile strength detection device of this type of building exterior wall material is generally only suitable for tensile strength detection, and cannot complete compressive strength testing. The function is relatively single, and the operator needs to switch instruments when using it, which is inconvenient to use and increases the workload of the operator.

[0005] Therefore, the present invention proposes a bidirectional sliding test device for the bonding tensile strength of building materials, which is used to simultaneously solve the above-mentioned technical problems. Summary of the invention

[0006] The purpose of the present invention is to provide a bidirectional sliding test device for the bonding tensile strength of building materials, which solves the technical problem of how to simply and efficiently test the tensile properties of different parts of building materials, and can also perform compressive strength tests, having a multifunctional technical effect.

[0007] A bidirectional sliding test device for the bonding tensile strength of building materials, comprising a bracket, two ends of which are respectively provided with a clamping structure for clamping and fixing the building material and a tensile test assembly for detecting the tensile strength, the tensile test assembly is in contact with the clamping structure, and the tensile test assembly has two and both are arranged below the building material;

[0008] It also includes a compression test component for detecting compressive strength, the compression test component has two components and is respectively arranged at the two ends of the building material, the compression test component includes a downward pressure structure and a supporting structure respectively arranged on the upper and lower sides of the building material, the downward pressure structure near one end of the building material is linked with the clamping structure near the other end thereof, the downward pressure structure near the other end of the building material is linked with the clamping structure near one end thereof, and the supporting structures are respectively arranged at both ends of the building material.

[0009] The clamping structure includes a vertically placed positioning plate and a telescopic cylinder vertically connected to the side of the positioning plate. The positioning plate is provided with a clamping assembly for clamping and fixing building materials and a power driving structure for applying force to the clamping assembly. The telescopic cylinder is horizontally fixed on the bracket.

[0010] The clamping assembly includes a driving gear, an upper gear and a lower gear which are rotatably arranged in sequence from top to bottom, the bottom end of the driving gear is meshedly connected with the top end of the upper gear, and the bottom end of the upper gear is meshedly connected with the top end of the lower gear;

[0011] A gear shaft 1 is passed through the center of the driving gear, a gear shaft 2 is passed through the center of the upper gear, and a gear shaft 3 is passed through the center of the lower gear;

[0012] The side of the gear shaft three is vertically fixedly connected to one end of the lower rotating rod, and the other end of the lower rotating rod is connected to the lower pressure plate. The side of the gear shaft two is vertically fixedly connected to one end of the upper rotating rod, and the other end of the upper rotating rod is connected to the upper pressure plate. Building materials are arranged between the lower pressure plate and the upper pressure plate.

[0013] The gear shaft 1 is connected to the power drive structure;

[0014] The power drive structure includes a driving rod with one end vertically fixedly connected to one side of the gear shaft, an electric push rod with a free end hinged to the other end of the driving rod, and a base on the electric push rod hinged to the upper end of the positioning plate.

[0015] The tensile test assembly includes a lower support seat arranged at the bottom end of the bracket, a rotating shaft arranged horizontally and rotatably connected to the top end of the lower support seat, a rotating column with one end vertically connected to the side of the rotating shaft, a rotating ring sleeved on the other end of the rotating column, and a pressure sensor 1 fixed on the rotating ring, wherein the pressure sensor 1 is in detachable contact with both sides of the lower pressure plate;

[0016] One end of the rotating shaft is connected to a limiting structure, and the limiting structure is arranged on the lower supporting seat.

[0017] The limiting structure includes a fixed slot plate fixed on the lower support seat, a sliding column and a spring vertically arranged in the fixed slot plate, a protruding column with one end vertically connected to the side of the sliding column, a tooth block arranged at the top of the sliding column, and a limiting gear meshingly connected to the top of the tooth block;

[0018] A vertical slide groove is arranged in the fixed groove plate, the spring is arranged between the bottom surface of the vertical slide groove and the sliding column, the extending column horizontally passes through the long through hole arranged on the side of the fixed groove plate, and the limiting gear is coaxially fixedly connected to one end of the rotating shaft.

[0019] The pressing structure comprises a horizontally placed transverse toothed rod, a pressing gear meshingly connected with the lower end of the transverse toothed rod, a vertically placed vertical toothed rod meshingly connected with the pressing gear, an adjusting cylinder vertically fixed to the bottom end of the vertical toothed rod, and a pressing block fixed to the bottom end of the adjusting cylinder, wherein the pressing block is in detachable contact with the upper end surface of the building material, one end of the transverse toothed rod is connected to the top end of one of the positioning plates, the pressing gear is rotatably arranged on an upper support seat via a gear shaft, and the upper support seat is connected to a bracket;

[0020] The two ends of the horizontal tooth rod are respectively provided with horizontal guide holes, and a guide column 1 is slidably connected in the horizontal guide hole. The top of the vertical tooth rod is provided with a vertical guide hole, and a guide column 2 is slidably connected in the vertical guide hole. One end of the guide column 1 and the guide column 2 are respectively connected to the bracket.

[0021] The supporting structure includes a supporting cylinder vertically arranged at the bottom end of the bracket, a supporting column vertically arranged at the top end of the supporting cylinder, and a supporting plate horizontally fixed to the outer side of the upper end of the supporting column, and the supporting plate is arranged on the lower end surface of the building material.

[0022] An open groove is arranged at the top end of the support column, a second pressure sensor is arranged in the open groove, and the second pressure sensor is in contact with the lower end surface of the building material.

[0023] The detection component includes a pressure sensor 3 fixed on the bottom surface of the upper pressure plate. The pressure sensor 3 is connected to the host computer through a single-chip microcomputer, and the pressure data is displayed through the operating software on the host computer.

[0024] The upper pressing plate and the lower pressing plate are respectively provided with friction driving structures in contact with the building materials; the friction driving structure includes a linkage shaft rotatably arranged on the outer end of the upper pressing plate or the lower pressing plate, a rubber wheel and a linkage gear coaxially connected to the linkage shaft, and a linkage gear rod with one end coaxially meshing with the linkage gear, and the other end of the linkage gear rod is rotatably connected to the outer end of another adjacent upper pressing plate or the lower pressing plate.

[0025] The positive effects of the present invention are as follows:

[0026] (1) The clamping structure provided in this solution can simultaneously produce the following technical effects:

[0027] First, two clamping structures are set up, which are arranged at both ends of the building material, which not only helps to improve the efficiency of stretching, but also helps to test the bidirectional mechanical properties of the building material;

[0028] Secondly, the linkage with the downward pressure structure is helpful to carry out tensile tests on different parts of the building materials. Specifically, when the building material completes a tensile fracture, the telescopic cylinder moves in the opposite direction to adjust the position of the broken building material. Through the horizontal gear rod and the downward pressure gear, the vertical gear rod is driven to move downward and press on the outer end of the broken building material. Then, the telescopic cylinder and the pressure block are respectively connected to the two ends of the broken building material, so that the tensile strength of the building material near the end edge can be further tested.

[0029] Third, it cooperates with the friction drive structure to help accelerate the fracture of building materials;

[0030] (2) The downward pressure structure provided in this scheme has the following technical effects:

[0031] First, as mentioned above, working in conjunction with the clamping structure, the mechanical properties of other parts of the building material after the primary fracture can be tested;

[0032] Second, under the action of the downward pressure structure, when the vertical gear rod drives the adjusting cylinder and the pressure block to move downward, the compressive strength of the building materials can also be tested;

[0033] Third, a pressure sensor is provided at the top of the support column, which can be used to test the compressive strength on the one hand, and on the other hand, when the secondary tensile test is carried out, it can be used to determine whether the downward pressure of the vertical gear rod is too large, and then adjust one of the telescopic cylinders;

[0034] (3) The tensile test assembly provided in the present scheme uses a rotating shaft to drive the rotating column and the pressure sensor 1 to rotate, and adjusts the angle of the pressure sensor 1 through a rotating ring. It can not only test the tensile force during the primary tensile test, but also the tensile force during the secondary tensile test. The positioning is performed through a limiting structure, which is convenient and fast, and has a multifunctional technical effect. The reason for testing the secondary tensile test is mainly to compare the primary tensile test with the secondary tensile test, and to determine whether the mechanical properties of other parts of the material are affected after the primary tensile test. In addition, the pressure sensor 1 is located at the bottom of the building material, and also has the effect of supporting the building material.

[0035] (4) In addition to the tensile and compression tests of building materials, this scheme can also be used for impact tests, that is, one of the supporting structures is removed, and one end of the building material is clamped by the other supporting structure and the upper pressure block. The upper rotating rod and the upper pressure plate near the impact point, and the lower rotating rod and the lower pressure plate fix the building material. When the telescopic cylinder away from the impact point moves, the pressure block above the impact point is pressed downward to impact one end of the building material, and finally a fracture of the building material is obtained;

[0036] (5) The bidirectional sliding test device proposed in this scheme can test the tensile properties of different parts of the building materials and determine whether the mechanical properties of various parts of the building materials are consistent;

[0037] At the same time, when testing the tensile strength of concrete materials (such as rock wool boards), the compressive strength test can also be completed. It has many functions and low production and use costs, and can be widely used in factories, laboratories and other places. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the three-dimensional structure of the bidirectional sliding test device in Example 1 of the present invention.

[0039] Figure 2 It is a front view of the bidirectional sliding test device in Example 1 of the present invention.

[0040] Figure 3 It is a rear view of the bidirectional sliding test device in Example 1 of the present invention.

[0041] Figure 4 This is a working status diagram of two clamping structures and two detection components in Example 1 of the present invention.

[0042] Figure 5 Schematic diagram of the connection structure of the clamping structure and the tensile test assembly in Examples 1 and 2 of the present invention.

[0043] Figure 6 Schematic diagram of the structure of the clamping structure in Example 1 and Example 2 of the present invention.

[0044] Figure 7 Schematic diagram of the structure of the tensile test assembly in Example 1 of the present invention.

[0045] Figure 8 It is a structural schematic diagram of the downward pressing structure in Example 1 of the present invention.

[0046] Fig. 9 It is a structural schematic diagram of the downward pressing structure in Example 4 of the present invention.

[0047] Fig.10 This is a schematic diagram of the structure of the friction drive structure in Example 5 of the present invention.

[0048] The accompanying drawings are marked as follows: 1, vertical plate; 2, bottom plate; 3, rotating column; 31, rotating ring; 32, pressure sensor 1; 33, rotating shaft; 4, lower support seat; 51, fixed slot plate; 52, extending column; 53, sliding column; 54, gear block; 55, limit gear; 6, supporting cylinder; 7, supporting column; 71, supporting plate; 72, pressure sensor 2; 81, lower rotating rod; 82, lower gear; 83, upper gear; 84, driving gear; 85, positioning plate; 86, Upper rotating rod; 87, upper pressure plate; 871, pressure sensor three; 872, rubber wheel; 873, linkage gear rod; 874, linkage gear; 875, linkage shaft; 88, electric push rod; 89, driving rod; 9, telescopic cylinder; 10, guide column one; 11, horizontal gear rod; 12, top plate; 13, upper support seat; 14, lower pressure gear; 15, guide column two; 16, vertical gear rod; 17, adjusting cylinder; 18, pressure block; 19, building material; 24, bracket; 25, lower pressure plate. DETAILED DESCRIPTION

[0049] In order to more clearly illustrate the technical features of this solution, this solution is described below through specific implementation methods.

[0050] Example 1

[0051] See also Figure 1-Figure 8 A bidirectional sliding test device for the tensile strength of bonding of building materials, comprising a bracket 24, both ends of which are respectively provided with a clamping structure for clamping and fixing a building material 19 and a tensile test assembly for detecting tensile strength, the tensile test assembly is in contact with the clamping structure, and the tensile test assembly has two and both are arranged below the building material 19;

[0052] It also includes a compression test component for detecting compressive strength. The compression test component has two components and is respectively arranged at the two ends of the building material 19. The compression test component includes a downward pressure structure and a supporting structure respectively arranged on the upper and lower sides of the building material 19. The downward pressure structure near one end of the building material 19 is linked with the clamping structure near the other end thereof, and the downward pressure structure near the other end of the building material 19 is linked with the clamping structure near one end thereof. Support structures are respectively arranged at both ends of the building material 19.

[0053] More preferably, the bracket 24 includes a bottom plate 2 arranged horizontally, vertical plates 1 arranged vertically at both ends of the bottom plate 2, and a top plate 12 arranged horizontally at the top of the vertical plates.

[0054] The clamping structure includes a vertically placed positioning plate 85 and a telescopic cylinder 9 vertically connected to the side of the positioning plate 85. The positioning plate 85 is provided with a clamping assembly for clamping and fixing the building material 19 and a power driving structure for applying force to the clamping assembly. The telescopic cylinder 9 is horizontally fixed on the bracket 24.

[0055] The clamping assembly includes a driving gear 84, an upper gear 83 and a lower gear 82 which are rotatably arranged in sequence from top to bottom, the bottom end of the driving gear 84 is meshedly connected with the top end of the upper gear 83, and the bottom end of the upper gear 83 is meshedly connected with the top end of the lower gear 82;

[0056] A gear shaft 1 is passed through the center of the driving gear 84, a gear shaft 2 is passed through the center of the upper gear 83, and a gear shaft 3 is passed through the center of the lower gear 82;

[0057] The side of gear shaft three is vertically fixedly connected to one end of the lower rotating rod 81, and the other end of the lower rotating rod 81 is connected to the lower pressure plate 25. The side of gear shaft two is vertically fixedly connected to one end of the upper rotating rod 86, and the other end of the upper rotating rod 86 is connected to the upper pressure plate 87. Building material 19 is arranged between the lower pressure plate 25 and the upper pressure plate 87.

[0058] Gear shaft one is connected to the power drive structure;

[0059] The power drive structure includes a driving rod 89 with one end vertically fixedly connected to one side of the gear shaft, an electric push rod 88 with a free end hinged to the other end of the driving rod 89, and a base on the electric push rod 88 is hinged to the upper end of the positioning plate 85.

[0060] The tensile test assembly includes a lower support seat 4 arranged at the bottom end of the bracket 24, a rotating shaft 33 arranged horizontally and rotatably connected to the top end of the lower support seat 4, a rotating column 3 with one end vertically connected to the side of the rotating shaft 33, a rotating ring 31 sleeved on the other end of the rotating column 3, and a pressure sensor 32 fixed on the rotating ring 31, and the pressure sensor 32 is in detachable contact with both sides of the lower pressure plate 25;

[0061] One end of the rotating shaft 33 is connected to a limiting structure, and the limiting structure is disposed on the lower supporting seat 4 .

[0062] Preferably, a spring is provided between the pressure sensor 32 and the lower pressure plate 25, and one end of the spring is fixed on the lower pressure plate 25, which helps to buffer and prevent the lower pressure plate 25 from moving too much and damaging the pressure sensor 32. To simplify the design, the spring is no longer marked in the attached drawings.

[0063] The limiting structure includes a fixed slot plate 51 fixed on the lower support seat 4, a sliding column 53 and a spring vertically arranged in the fixed slot plate 51, a protruding column 52 with one end vertically connected to the side of the sliding column 53, a tooth block 54 arranged at the top of the sliding column 53, and a limiting gear 55 meshingly connected to the top of the tooth block 54;

[0064] A vertical slide groove is provided in the fixed groove plate 51, a spring is provided between the bottom surface of the vertical slide groove and the sliding column 53, the extension column 52 horizontally passes through the long through hole provided on the side of the fixed groove plate 51, and the limit gear 55 is coaxially fixedly connected to one end of the rotating shaft 33.

[0065] The pressing structure includes a horizontally placed horizontal toothed rod 11, a pressing gear 14 meshingly connected to the lower end of the horizontal toothed rod 11, a vertically placed vertical toothed rod 16 meshingly connected to the pressing gear 14, an adjusting cylinder 17 vertically fixed to the bottom end of the vertical toothed rod 16, and a pressing block 18 fixed to the bottom end of the adjusting cylinder 17, wherein the pressing block 18 is in detachable contact with the upper end surface of the building material 19, one end of the horizontal toothed rod 11 is connected to the top end of one of the positioning plates 85, and the pressing gear 14 is rotatably arranged on the upper support seat 13 through a gear shaft, and the upper support seat 13 is connected to the bracket 24;

[0066] The two ends of the horizontal tooth rod 11 are respectively provided with horizontal guide holes, in which guide pillars 10 are slidably connected. The top of the vertical tooth rod 16 is provided with vertical guide holes, in which guide pillars 2 15 are slidably connected. One ends of guide pillars 10 and 15 are respectively connected to the bracket 24.

[0067] The supporting structure includes a supporting cylinder 6 vertically arranged at the bottom end of the bracket 24, a supporting column 7 vertically arranged at the top end of the supporting cylinder 6, and a supporting plate 71 horizontally fixed to the outer side of the upper end of the supporting column 7. The supporting plate 71 is arranged on the lower end surface of the building material 19.

[0068] An open groove is provided at the top of the support column 7, and a pressure sensor 2 72 is provided in the open groove. The pressure sensor 2 72 is in contact with the lower end surface of the building material 19. In order to simplify the design, the pressure sensor 2 72 is no longer marked in the accompanying drawings. The pressure sensor 2 72 is connected to the host computer through a single-chip microcomputer, and the tensile data is displayed through the operating software on the host computer. This is hereby explained.

[0069] The specific working process of the present invention is:

[0070] The clamping structure provided in this scheme connects the two ends of the building material 19 (a rock wool board is used in this scheme) to the two clamping structures respectively, that is, the two ends are respectively arranged between the upper rotating rod 86 and the lower rotating rod 81. Under the adjustment of the electric push rod 88, the driving gear 84 is pushed to rotate, the driving gear 84 drives the upper gear 83 to rotate, the upper gear 83 drives the lower gear 82 to rotate, the upper gear 83 drives the upper rotating rod 86 to rotate, the lower gear 82 drives the lower rotating rod 81 to rotate, the upper pressing plate 87 and the lower pressing plate 25 clamp the building material 19, and finally, under the action of the telescopic cylinder 9, it is stretched outward until the building material 19 breaks. The pressure sensor 32 is connected to the host computer through the single chip microcomputer, and the pressure data is displayed through the operating software on the host computer. This operation is a tensile test; in the first tensile fracture process, the vertical tooth rod 16, the regulating cylinder 17 and the pressure block 18 move upward, so at this time, the building material will not be subjected to the downward pressure of the vertical tooth rod 16, while in the second tensile fracture test, it is the opposite;

[0071] After the first tensile test is completed, the position of the building material 19 is manually adjusted according to the actual situation, and the two telescopic cylinders 9 make opposite approaching movements. At this time, under the action of the horizontal tooth rod 11 and the downward pressure gear 14, the vertical tooth rod 16 is driven to move downward and press on the outer end of the broken part of the building material 19; at this time, the two ends of the broken building material 19 are respectively connected with the upper pressure plate 87 and the pressure block 18 by force, which is equivalent to the broken building material 19 being clamped and fixed at both ends, and then a secondary tensile fracture test is carried out, the purpose of which is to verify the crack resistance of the end pull rope of the building material 19; it should be noted that when performing the secondary pull rope, it is necessary to remove a part of the broken building material and test the other part. In this way, in the two telescopic cylinders 9 moving in opposite directions, one of the telescopic cylinders 9 keeps the vertical tooth rod 16 in the downward pressure state, and the other telescopic cylinder 9 drives the upper pressure plate 87 and the lower pressure plate 25 to press the end of the broken building material to move.

[0072] Prior to this, the position of the pressure sensor 32 is also adjusted, that is, the rotating column 3 is rotated to the other side of the lower pressing plate 25 and fixed by the limiting structure. At this time, the end of the building material that has been broken once is pressed by the pressure on the vertical tooth rod 16, and the part close to the break is clamped by the upper pressing plate 87 and the lower pressing plate 25. Then, under the pushing action of the telescopic cylinder 9, this part of the building material will undergo a second tensile fracture, so that the tensile strength of the building material 19 near the end edge can be further tested;

[0073] Therefore, the tensile test assembly provided in the present scheme utilizes the rotating shaft 33 to drive the rotating column 3 and the pressure sensor 32 to rotate, and adjusts the angle of the pressure sensor 32 by the rotating ring 31, so that not only the tensile force during the first tensile test can be tested, but also the tensile force during the second tensile test can be tested, and positioning is performed by the limiting structure, which is convenient and fast; specifically, when the building material breaks for the first time, the pressure sensor 32 is on one side of the lower pressing plate 25; when the building material breaks for the second time, the pressure sensor 32 is on the other side of the lower pressing plate 25, and in the two breaking processes of the building material, the movement directions of the upper pressing plate 87 and the lower pressing plate 25 are opposite;

[0074] By pushing the telescopic cylinder 9, the vertical gear rod 16 drives the adjusting cylinder 17 and the pressing block 18 to move downward, and the pressing block 18 acts on the upper end surface of the building material 19. At the same time, a supporting structure is also arranged directly below it. The top of the support column 7 is provided with an open groove, and a second pressure sensor 72 is arranged in the open groove. The second pressure sensor 72 contacts the lower end surface of the building material 19, and the compressive strength is tested by the second pressure sensor 72. The second pressure sensor 72 is connected to the host computer through the single-chip microcomputer;

[0075] It should be noted that, since the descending distance of the vertical tooth rod 16 is within a certain range, the building material in the present application is suitable for plates with a small thickness.

[0076] The purpose of the regulating cylinder 17 is to fine-tune the pressure of the vertical gear rod 16 during the secondary tensile test to avoid the tensile test being affected by excessive pressure of the vertical gear rod 16. Therefore, the regulating cylinder 17 is connected to the single-chip microcomputer. Specifically, the single-chip microcomputer controls the opening and closing of the solenoid valve through a solid-state relay, and the solenoid valve controls the opening and closing of the regulating cylinder 17. That is, when the pressure of the vertical gear rod 16 is too high, the telescopic column of the regulating cylinder 17 is slightly retracted and shortened, so that the pressure of the vertical gear rod 16 is slightly relaxed, which helps to reduce the pressure.

[0077] During the secondary tensile test, the reason for fine-tuning the adjustment cylinder 17 is to avoid excessive pressure from the pressure block 18 (this adjustment process is before the formal secondary tensile test, and the formal tensile test is carried out only after the fine-tuning is completed), which may damage the material. In this way, it is difficult to distinguish whether the damage to the material is caused by tension or compression. The adjustment value of the adjustment cylinder 17 can be verified by multiple tests based on the actual material, and it shall be based on the fact that the pressure block 18 does not cause damage to the material.

[0078] The pressure sensor 2 72 provided in the present solution can be used to test the compressive strength on the one hand, and on the other hand, when performing the secondary tensile test, it can also be used to determine whether the downward pressure of the vertical gear rod 16 is too large, so as to perform adaptive fine adjustment by adjusting the cylinder 17;

[0079] The bidirectional sliding test device proposed in this scheme can test the tensile properties of different parts of the building material 19, and can determine whether the mechanical properties of various parts of the building material 19 are consistent;

[0080] At the same time, when testing the tensile strength of concrete materials (such as rock wool boards), the compressive strength test can also be completed. It has many functions, is easy to use, and reduces the workload of operators.

[0081] This plan further explains: Building materials are a general term for materials used in civil engineering and construction engineering. They can be divided into structural materials, decorative materials and certain special materials. Structural materials include wood, bamboo, stone, cement, concrete, metal, bricks and tiles, ceramics, glass, engineering plastics, composite materials, etc. Decorative materials include various coatings, paints, coatings, veneers, various colored tiles, glass with special effects, etc.; special materials refer to materials used for waterproofing, moisture-proofing, anti-corrosion, fireproofing, flame retardancy, sound insulation, heat insulation, thermal insulation, sealing, etc.

[0082] Example 2

[0083] See also Figure 5-Figure 6The detection assembly includes an upper pressing plate 87 connected between two upper rotating rods 86, and a pressure sensor 3 871 fixed on the bottom surface of the upper pressing plate 87. The pressure sensor 3 871 is connected to the host computer through a single chip microcomputer, and the pressure data is displayed through the operating software on the host computer. For example, an open groove can be opened on the bottom surface of the upper pressing plate 87, so that the pressure sensor 3 871 is fastened in the open groove to achieve fixation.

[0084] In this scheme, a pressure sensor 3 871 is provided, and its main purpose is to test the clamping force. Considering that there are different types of building materials, their tensile strength and compressive strength are different. When the building material breaks under tension, the reason for its breakage may be that the clamping force is too large, causing the material to be damaged and broken. Therefore, a pressure sensor 3 871 is provided, and its pressure data is compared with the data in the pressure sensor 2 72 in the compression experiment to ensure that the building material is stretched and broken without being damaged by clamping. In this way, more accurate tensile test data will be obtained.

[0085] Example 3

[0086] When testing the compressive strength of the material, adjust the electric push rod 88 so that the upper pressure plate 87 and the lower pressure plate 25 are separated from the building material 19, and the two telescopic cylinders 9 move towards each other, driving the two vertical gear rods 16 to move downward and press on the building material 19 through the pressure block 18. Under the test of the pressure sensor 2 72, the compressive strength test of the building material is achieved.

[0087] Example 4

[0088] See also Fig. 9 In addition to the tensile and compression tests of the building materials, the present invention can also conduct impact tests, that is, one of the supporting structures is removed, and one end of the building material 19 is clamped by the other supporting structure and the upper pressure block 87, and the upper rotating rod 86 and the upper pressure plate 87, the lower rotating rod 81 and the lower pressure plate 25 near the impact point fix the building material 19, and when the telescopic cylinder 9 moves away from the impact point, the pressure block 18 above the impact point is pressed downward to impact one end of the building material 19, and finally a fracture of the building material 19 is obtained.

[0089] Example 5

[0090] See also Fig.10The upper pressing plate 87 and the lower pressing plate 25 are respectively provided with friction driving structures in contact with the building material 19; the friction driving structure includes a linkage shaft 875 rotatably arranged on the outer end of the upper pressing plate 87 or the lower pressing plate 25, a rubber wheel 872 and a linkage gear 874 coaxially connected to the linkage shaft 875, and a linkage gear rod 873 with one end coaxially meshing with the linkage gear 874, and the other end of the linkage gear rod 873 is rotatably connected to the outer end of another adjacent upper pressing plate 87 or lower pressing plate 25.

[0091] During actual operation, the upper pressure plate 87 and the lower pressure plate 25 are clamped on the upper and lower sides of the building material 19. At this time, the linkage gear rod 873 is meshed with its adjacent linkage gear 874. When the two upper pressure plates 87 move in opposite directions, the linkage gear rod 873 applies a rotational force to the linkage gear 874, so that the linkage gear 874 drives the rubber wheel 872 to exert friction on the building material 19 outward, which helps to quickly pull the building material 19 apart.

[0092] In order to simplify the design in this solution, only the connection structure between the upper pressure plate 87 and the friction drive structure is marked in the accompanying drawings. The connection method between the friction drive structure and the lower pressure plate 25 is similar to that of the upper pressure plate 87 and will not be described in detail here.

[0093] Technical features not described in the present invention can be achieved through or by adopting existing technologies and will not be described in detail here. Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. A bidirectional sliding test device for measuring the bonding tensile strength of building materials, comprising a bracket (24), characterized in that: The two ends of the bracket (24) are respectively provided with a clamping structure for clamping and fixing the building material (19) and a tensile testing component for detecting the tensile strength, the tensile testing component is in contact with the clamping structure, and the tensile testing components have two components and are both arranged below the building material (19); It also includes a compression test assembly for detecting compressive strength, the compression test assembly having two components and being respectively arranged at the two ends of the building material (19), the compression test assembly comprising a downward pressing structure and a supporting structure respectively arranged at the upper and lower sides of the building material (19), the downward pressing structure close to one end of the building material (19) being linked to the clamping structure close to the other end thereof, the downward pressing structure close to the other end of the building material (19) being linked to the clamping structure close to one end thereof, and the supporting structures being respectively arranged at the two ends of the building material (19); The clamping structure is also provided with a detection component for measuring the clamping force; The clamping structure comprises a vertically placed positioning plate (85), a telescopic cylinder (9) vertically connected to the side of the positioning plate (85), a clamping assembly for clamping and fixing the building material (19), and a power drive structure for applying force to the clamping assembly are arranged on the positioning plate (85), and the telescopic cylinder (9) is horizontally fixed on the bracket (24); The clamping assembly comprises a driving gear (84), an upper gear (83) and a lower gear (82) which are rotatably arranged in sequence from top to bottom, the bottom end of the driving gear (84) is meshingly connected with the top end of the upper gear (83), and the bottom end of the upper gear (83) is meshingly connected with the top end of the lower gear (82); A gear shaft 1 is passed through the center of the driving gear (84), a gear shaft 2 is passed through the center of the upper gear (83), and a gear shaft 3 is passed through the center of the lower gear (82); The side of the gear shaft three is vertically fixedly connected to one end of the lower rotating rod (81), the other end of the lower rotating rod (81) is connected to the lower pressing plate (25), the side of the gear shaft two is vertically fixedly connected to one end of the upper rotating rod (86), the other end of the upper rotating rod (86) is connected to the upper pressing plate (87), and a building material (19) is arranged between the lower pressing plate (25) and the upper pressing plate (87); The tensile test assembly comprises a lower support seat (4) arranged at the bottom end of the bracket (24), a rotating shaft (33) arranged horizontally and rotatably connected to the top end of the lower support seat (4), a rotating column (3) with one end vertically connected to the side of the rotating shaft (33), a rotating ring (31) sleeved on the other end of the rotating column (3), and a pressure sensor (32) fixed on the rotating ring (31), wherein the pressure sensor (32) is in detachable contact with both sides of the lower pressure plate (25); One end of the rotating shaft (33) is connected to a limiting structure, and the limiting structure is arranged on the lower supporting seat (4); The limiting structure comprises a fixed slot plate (51) fixed on the lower support seat (4), a sliding column (53) and a spring vertically arranged in the fixed slot plate (51), a protruding column (52) one end of which is vertically connected to the side of the sliding column (53), a tooth block (54) arranged at the top end of the sliding column (53), and a limiting gear (55) meshingly connected to the top end of the tooth block (54); A vertical slide groove is arranged in the fixed groove plate (51), the spring is arranged between the bottom surface of the vertical slide groove and the sliding column (53), the extending column (52) horizontally passes through a long through hole arranged on the side of the fixed groove plate (51), and the limiting gear (55) is coaxially fixedly connected to one end of the rotating shaft (33); The downward pressing structure comprises a horizontally placed transverse toothed rod (11), a downward pressing gear (14) meshingly connected to the lower end of the transverse toothed rod (11), a vertically placed vertical toothed rod (16) meshingly connected to the downward pressing gear (14), an adjusting cylinder (17) vertically fixed to the bottom end of the vertical toothed rod (16), and a pressing block (18) fixed to the bottom end of the adjusting cylinder (17), wherein the pressing block (18) is in detachable contact with the upper end surface of the building material (19), one end of the transverse toothed rod (11) is connected to the top end of one of the positioning plates (85), and the downward pressing gear (14) is rotatably arranged on an upper support seat (13) via a gear shaft, and the upper support seat (13) is connected to a bracket (24); The two ends of the horizontal tooth rod (11) are respectively provided with horizontal guide holes, and a guide column 1 (10) is slidably connected in the horizontal guide hole. The top end of the vertical tooth rod (16) is provided with a vertical guide hole, and a guide column 2 (15) is slidably connected in the vertical guide hole. One end of the guide column 1 (10) and the guide column 2 (15) are respectively connected to the bracket (24).

2. The bidirectional sliding test device for the bonding tensile strength of building materials according to claim 1, characterized in that: The gear shaft 1 is connected to the power drive structure; The power drive structure comprises a driving rod (89) having one end vertically fixedly connected to one side of the gear shaft, an electric push rod (88) having a free end hinged to the other end of the driving rod (89), and a base on the electric push rod (88) hinged to the upper end of the positioning plate (85).

3. The bidirectional sliding test device for the bonding tensile strength of building materials according to claim 1, characterized in that: The supporting structure comprises a supporting cylinder (6) vertically arranged at the bottom end of the bracket (24), a supporting column (7) vertically arranged at the top end of the supporting cylinder (6), and a supporting plate (71) horizontally fixed to the outer side of the upper end of the supporting column (7), wherein the supporting plate (71) is arranged on the lower end surface of the building material (19); The top end of the support column (7) is provided with an open groove, and a second pressure sensor (72) is provided in the open groove. The second pressure sensor (72) is in contact with the lower end surface of the building material (19).

4. The bidirectional sliding test device for the bonding tensile strength of building materials according to claim 1, characterized in that: The detection component comprises a third pressure sensor (871) fixed on the bottom surface of the upper pressure plate (87); the third pressure sensor (871) is connected to a host computer via a single chip microcomputer, and pressure data is displayed via operating software on the host computer.

5. The bidirectional sliding test device for building material bonding tensile strength according to claim 1, characterized in that: The upper pressing plate (87) and the lower pressing plate (25) are respectively provided with a friction driving structure in contact with the building material (19); the friction driving structure comprises a linkage shaft (875) rotatably arranged on the outer end of the upper pressing plate (87) or the lower pressing plate (25), a rubber wheel (872) and a linkage gear (874) coaxially connected to the linkage shaft (875), and a linkage gear rod (873) one end of which is coaxially meshed with the linkage gear (874); the other end of the linkage gear rod (873) is rotatably connected to the outer end of another adjacent upper pressing plate (87) or the lower pressing plate (25).

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