A lightweight steel profile strength testing device

Abstract

The present invention relates to the field of steel profiles, and in particular to a lightweight steel profile strength testing device. The technical solution is as follows: A lightweight steel profile strength testing device, comprising a testing platform and a control console, etc.; a control console is installed on the right side of the testing platform. The present invention fixes the outside of the steel profile sample through two contact blocks and the silicone layer thereon, and cooperates with the supporting block to resist the internal groove of the steel profile sample, thereby fixing the steel profile sample without causing the steel profile sample to deform, and absorbing the instantaneous impact generated when part of the steel profile sample breaks. Then, the end of the steel profile sample is supported by a T-shaped plate. When the steel profile sample breaks, the instantaneous impact generated is transmitted to the shock absorber through the T-shaped plate. The shock absorber absorbs the instantaneous impact to prevent the instantaneous impact from affecting the strength test of other steel profile samples.

Description

Technical Field

[0001] The present invention relates to the field of steel profiles, and in particular to a lightweight steel profile strength detection device. Background Art

[0002] The inspection of steel profiles is different from that of pipes and plates. The special requirements of their shape determine that mechanical properties are the key inspection items of steel profiles. The inspection of mechanical properties is of great reference value for steel profile products.

[0003] Existing Chinese patent: (CN116465736A) A tensile testing device for aluminum profiles, when pre-clamping and continuous clamping are required, the air pump is started, and the gas is sent into the air inlet pipe through the setting of the air inflation pipe, and then the lifting assembly is started to provide tension to pull multiple aluminum profiles. Finally, the tensile capacity of the aluminum profile can be detected by the detection assembly, but without protecting each aluminum profile, multiple aluminum profiles are stretched by a single lifting assembly. If the performance of each aluminum profile is inconsistent and the fracture time of the aluminum profile is inconsistent, the aluminum profile will also produce a transient impact on the equipment when it breaks, so that the transient impact generated by the aluminum profile that breaks first will be transmitted to other aluminum profiles through the lifting assembly, causing the tensile loading process of other aluminum profiles to change, causing the aluminum profile to break prematurely, and the test results are inconsistent with the actual situation. Summary of the Invention

[0004] The technical problems of the present invention are:

[0005] In order to overcome the shortcomings of testing multiple groups of samples simultaneously without protecting each sample, the instantaneous impact generated by the sample that broke first affects the unbroken samples, and the test results are inconsistent with the actual situation, the present invention provides a lightweight steel profile strength testing equipment.

[0006] The technical implementation scheme adopted in the present invention is:

[0007] A lightweight steel profile strength testing device includes a testing platform, a control console, an air circulator, a tension component, a support block, a mounting bracket, a limit plate, a first electric actuator and a connecting plate; the right side of the testing platform is equipped with a control console; the left side of the testing platform is fixedly connected to the air circulator; the testing platform is connected to the tension component; the tension component is used to provide power for stretching the steel profile sample; the left side of the control console is connected to the tension component; the tension component is connected to a plurality of support blocks; the tension component is connected to a plurality of mounting brackets; the mounting brackets correspond to the support blocks; each mounting bracket is connected to a plurality of limit plates; each of the two adjacent limit plates is respectively equipped with a first electric actuator; each telescopic part of the first electric actuator is fixedly connected to two connecting plates; it also includes a connecting rod, a contact block and a shock absorber Components; each connecting plate is fixed with a connecting rod; each two adjacent connecting rods are fixed with a contact block; each limit plate is provided with a first wedge surface; each contact block is provided with a second wedge surface; each second wedge surface is in contact with a first wedge surface; each contact block is provided with a friction surface on the side away from the second wedge surface; each steel profile sample is placed between two adjacent friction surfaces, and the two adjacent contact blocks are used to clamp and fix the outside of the corresponding steel profile sample; a plurality of shock-absorbing components are connected to the air circulator; the right part of the moving end is connected to a plurality of shock-absorbing components; each shock-absorbing component corresponds to a steel profile sample; the shock-absorbing component is used to absorb the impact on both ends of the steel profile sample when the steel profile sample is stretched to fracture.

[0008] Furthermore, the tension assembly includes a screw rod, a fixed end and a movable end; the left part of the console is rotatably connected to multiple screw rods; the left parts of all the screw rods are rotatably connected to the fixed end; the lower part of the fixed end is fixedly connected to the detection table; all the screw rods are screwed together to the movable end; the fixed end and the movable end are each connected to multiple support blocks; the fixed end and the movable end are each fixedly connected to multiple mounting brackets.

[0009] Furthermore, a silica gel shock-absorbing layer is provided on the friction surface, and a plurality of convex strips which are not parallel to the plane of the detection platform are provided on the shock-absorbing layer.

[0010] Furthermore, the shock-absorbing assembly includes a fixed seat, a sleeve rod, a connecting rod, a shock-absorbing member, a T-shaped plate and a sliding rod; a plurality of fixed seats are fixedly connected to the upper part of the air circulator; a sleeve rod is fixedly connected to each fixed seat; a connecting rod is fixedly connected to the side of each sleeve rod facing the support block; the connecting rod is a vertical plate; a plurality of shock-absorbing members are fixedly connected to the connecting rod; a sliding rod is slidably connected in each sleeve rod; each sliding rod is fixedly connected to a T-shaped plate on the side facing the support block; two corresponding T-shaped plates on the left and right are used to support the two ends of the corresponding steel profile samples; each T-shaped plate is in contact with and cooperates with the corresponding shock-absorbing member.

[0011] Furthermore, the shock absorber has a wedge-shaped structure and is made of a tough alloy.

[0012] Furthermore, it also includes a suction pipe, a junction box and an electrically controlled air valve; a plurality of suction pipes are fixedly connected between the fixed end and the movable end; the left ends of all the suction pipes are commonly connected to the air circulator; the upper part of each suction pipe is connected to a plurality of junction boxes; the interior of each support block is hollowed out and provided with a partition bar; each partition bar divides the space inside the corresponding support block into two symmetrical cooling chambers; the upper part of each cooling chamber is connected to a plurality of first air holes; the first air holes are used to extract the air from the inside of the corresponding steel profile sample; the lower part of each adjacent two cooling chambers is commonly connected to a junction box through a connecting pipe; an electrically controlled air valve is installed on the left part of each suction pipe.

[0013] Furthermore, each supporting block is provided with a plurality of transverse air flow grooves; each air flow groove is connected to the plurality of first air holes.

[0014] Furthermore, it also includes fins; each air flow groove is fixed with a fin; the fins are wedge-shaped heat conducting fins; the fins are used to contact the steel profile sample and conduct the heat generated on the steel profile sample to the fins.

[0015] Furthermore, it also includes a horizontal plate, a water-absorbing part and a scraper part; each cooling chamber is connected to a horizontal plate on the upper part; each horizontal plate is a hollow tube; each two adjacent horizontal plates are fixedly connected to a water-absorbing part on the side away from the supporting block, and the water-absorbing part is an arc-shaped plate; the water-absorbing part is provided with a sponge water-absorbing layer on the side away from the horizontal plate; the water-absorbing part is connected to a scraper part on the side away from the supporting block; the two ends of the scraper part are scraping parts; the scraper part is an arc-shaped structure.

[0016] Furthermore, it also includes an air pipe, a second electric actuator, a pull rope, a suction head and a collecting bucket; the scraper part is a hollow thin plate; each horizontal plate is connected to an air pipe; every two adjacent air pipes are connected to the scraper part; each support block is fixedly connected to a second electric actuator on the upper part; each second electric actuator telescopic part passes through the corresponding water-absorbing part and the scraper part in turn; each second electric actuator telescopic part is connected to two pull ropes; each scraper part is fixedly connected to a plurality of suction heads on the side away from the horizontal plate; each suction head is fixed to a pull rope; each suction head is provided with a filter; each suction head is fixedly connected to a collecting bucket on the lower part; each scraper part is fixed to the corresponding collecting bucket; the scraper part has a plurality of second air holes on the side away from the horizontal plate; each suction head is connected to the corresponding second air hole.

[0017] The beneficial effects are:

[0018] 1. The present invention fixes the outside of the steel profile sample through two contact blocks and the silicone layer thereon, and cooperates with the supporting block to resist the internal groove of the steel profile sample, thereby fixing the steel profile sample without causing the steel profile sample to deform, and absorbing the instantaneous impact generated when part of the steel profile sample breaks. Then, the end of the steel profile sample is supported by a T-shaped plate. When the steel profile sample breaks, the instantaneous impact generated is transmitted to the shock absorber through the T-shaped plate. The shock absorber absorbs the instantaneous impact and prevents the instantaneous impact from affecting the strength detection of other steel profile samples.

[0019] 2. Through the contact between the fins and the steel profile sample, the heat generated during the tensile loading of the steel profile sample is transferred to the fins, and the fins are evacuated to cool the steel profile sample, thereby preventing the silicone layer from being affected by high temperature and causing it to melt and lose its shock absorption capacity.

[0020] 3. By controlling the bending degree of the scraper, the scraper scrapes the inner wall of the steel profile sample to remove the granular impurities on the inner wall of the steel profile sample, avoiding sand and stone particles from being located between the steel profile sample and the supporting block. If the steel profile sample is pulled at this time, the sand and stone particles will roll, which will easily cause the steel profile sample to loosen.

[0021] 4. The water absorbing component is used to remove water from the fixed position of the steel profile sample. Then, when the air is exhausted to cool the steel profile sample, the water absorbing component filters the air entering the air flow slot to remove moisture from the air. Then, when the scraper component returns to its original shape, the scraper component squeezes out the moisture in the water absorbing component to prevent moisture from being retained in the water absorbing component. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the lightweight steel profile strength testing equipment of the present invention;

[0023] Figure 2 A schematic diagram of the installation position of steel profile samples of the lightweight steel profile strength testing equipment of the present invention;

[0024] Figure 3 A schematic diagram of the fixing structure of the steel profile sample of the lightweight steel profile strength testing equipment of the present invention;

[0025] Figure 4 This is a schematic diagram of the installation position of the support block of the lightweight steel profile strength testing equipment of the present invention;

[0026] Figure 5 This is a schematic diagram of the assembly of the limit plate and contact block of the lightweight steel profile strength testing equipment of the present invention;

[0027] Figure 6 This is a schematic diagram of the three-dimensional structure of the shock-absorbing component of the lightweight steel profile strength testing equipment of the present invention;

[0028] Figure 7 This is a schematic diagram of the connection between the support block and the suction pipe of the lightweight steel profile strength testing equipment of the present invention;

[0029] Figure 8 This is a diagram showing the internal structure of the support block of the lightweight steel profile strength testing equipment of the present invention;

[0030] Figure 9 A detailed cross-sectional view of the upper portion of the support block of the lightweight steel profile strength testing device of the present invention;

[0031] Figure 10 This is a schematic diagram of the installation position of the water absorbing component of the lightweight steel profile strength testing equipment of the present invention;

[0032] Figure 11 This is a schematic diagram of the connection between the water absorbing component and the scraping component of the lightweight steel profile strength testing equipment of the present invention;

[0033] Figure 12 For the present invention Figure 11 Enlarged schematic diagram of point A in the middle.

[0034] In the accompanying drawings: 1-testing table, 2-control console, 3-air circulator, 4-screw, 5-fixed end, 6-movable end, 7-support block, 8-mounting frame, 9-limiting plate, 10-first electric actuator, 11-connecting plate, 12-connecting rod, 13-contact block, 001-steel profile sample, 9001-first wedge surface, 1301-second wedge surface, 1302-friction surface, 101-fixed seat, 102-sleeve rod, 103-connecting rod, 104-reducing Vibrating part, 105-T-shaped plate, 106-sliding rod, 201-suction pipe, 202-junction box, 203-electrically controlled air valve, 204-fin, 7001-spacer, 7002-cooling chamber, 7003-first air hole, 7004-air flow groove, 301-horizontal plate, 302-water absorbing part, 303-scraping part, 304-air pipe, 305-second electric actuator, 306-pull rope, 307-suction head, 308-collecting bucket, 30301-second air hole. DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0036] The first embodiment

[0037] A lightweight steel profile strength testing device, based on Figure 1-6As shown, it includes a test platform 1, a control console 2, an air circulator 3, a tension component, a support block 7, a mounting bracket 8, a limit plate 9, a first electric actuator 10 and a connecting plate 11; the control console 2 is installed on the right side of the test platform 1; the air circulator 3 is bolted to the left side of the test platform 1; the test platform 1 is connected with a tension component; the tension component is used to provide power for the stretching of the steel profile sample 001; the left side of the control console 2 is connected to the tension component; the tension component is connected to a plurality of support blocks 7; the tension component is connected to a plurality of mounting brackets 8; the mounting brackets 8 correspond to the support blocks 7; each mounting bracket 8 is connected to two limit plates 9 distributed front and back; each adjacent limit plate 9 is respectively installed with a first electric actuator 10 on the back side; the first electric actuator 10 is an electric push rod; each telescopic part of the first electric actuator 10 is fixed with two connecting plates 11;

[0038] The invention also includes a connecting rod 12, a contact block 13 and a shock-absorbing assembly; each connecting plate 11 is welded with a connecting rod 12; the connecting rod 12 is a tough alloy rod; each two adjacent connecting rods 12 are welded with a contact block 13; each limiting plate 9 is provided with a first wedge surface 9001; each contact block 13 is provided with a second wedge surface 1301; each second wedge surface 1301 is in contact with a first wedge surface 9001; each contact block 13 is away from the second wedge surface 1301. 1 is provided with a friction surface 1302 on each side; each steel profile sample 001 is placed between two adjacent friction surfaces 1302, and two adjacent contact blocks 13 are used to clamp and fix the outside of the corresponding steel profile sample 001; multiple shock-absorbing components are connected to the air circulator 3; the right part of the mobile end 6 is connected to multiple shock-absorbing components; each shock-absorbing component corresponds to a steel profile sample 001; the shock-absorbing components are used to absorb the impact at both ends of the steel profile sample 001 when the steel profile sample 001 is stretched to break.

[0039] according to Figure 2 and Figure 3-5 As shown, the tension assembly includes a screw rod 4, a fixed end 5 and a movable end 6; the left part of the control console 2 is rotatably connected to two screw rods 4 distributed front and back; the left parts of all the screw rods 4 are rotatably connected to the fixed end 5; the lower part of the fixed end 5 is bolted to the test table 1; all the screw rods 4 are screwed together with the movable end 6; the fixed end 5 and the movable end 6 are respectively connected to four support blocks 7 distributed front and back; the fixed end 5 and the movable end 6 are respectively welded to four mounting brackets 8 distributed front and back.

[0040] A silicone shock-absorbing layer is provided on the friction surface 1302, and a plurality of convex strips which are not parallel to the plane of the test platform 1 are provided on the shock-absorbing layer. The silicone shock-absorbing layer is used to contact and fix the steel profile sample 001, and to absorb vibration impact by adapting to deformation in the direction of movement when the steel profile sample 001 breaks through the convex strips.

[0041] according to Figure 2 and Figure 6 As shown, the shock-absorbing assembly includes a fixing seat 101, a sleeve rod 102, a connecting rod 103, a shock-absorbing member 104, a T-shaped plate 105 and a sliding rod 106; four fixing seats 101 distributed front and back are bolted to the upper part of the air circulator 3; each fixing seat 101 is welded with a sleeve rod 102; each sleeve rod 102 is welded with a connecting rod 103 on the side facing the supporting block 7; the connecting rod 103 is a vertical plate; three shock-absorbing members 104 distributed in a triangular shape are bolted to the connecting rod 103; each sleeve rod 102 is slidably connected with a sliding rod 106; each sliding rod 106 is bolted with a T-shaped plate 105 on the side facing the supporting block 7; the two corresponding T-shaped plates 105 on the left and right are used to support the two ends of the corresponding steel profile sample 001; each T-shaped plate 105 is in contact with the corresponding shock-absorbing member 104.

[0042] The shock absorber 104 has a wedge-shaped structure and is made of a tough alloy. The wedge-shaped structure of the shock absorber 104 is combined with the tough material to adaptively absorb the instantaneous impact caused by the fracture of the steel profile sample 001, and through the deformation of the shock absorber 104, the impact is simultaneously bent outward through three adjacent stable structures to relieve force.

[0043] First, the staff operates the control console 2 to set the parameters of the steel profile sample 001, and then the robot transfers the sample 001 to the position of the testing equipment, and then inserts the left end of a steel profile sample 001 between the left limiting plate 9 and the corresponding support block 7, and then makes the steel profile sample 001 lean against the left support block 7, and then controls the moving end 6 to move toward the direction of the steel profile sample 001, and waits for the right end of the steel profile sample 001 to enter between the right limiting plate 9 and the corresponding support block 7, and makes the right end of the steel profile sample 001 lean against the right support block 7, and then controls the two adjacent An electric actuator 10 contracts, synchronously driving the connecting plate 11 and the corresponding parts thereon to move, and the two adjacent contact blocks 13 are pushed between the limiting plate 9 and the steel profile sample 001. The second wedge surface 1301 of the contact block 13 contacts the first wedge surface 9001. That is, when the contact block 13 is pushed between the limiting plate 9 and the steel profile sample 001, the contact block 13 is limited by the first wedge surface 9001 and moves toward the direction of the steel profile sample 001. At this time, the connecting rod 12 bends toward the direction of the steel profile sample 001, and the friction surface 1302 is in close contact with the steel profile sample 001, completing the external fixation of the steel profile sample 001. Figure 4As shown, the supporting block 7 is against the inner surface of the steel profile sample 001, and cooperates with the external clamping to fix the steel profile sample 001, effectively avoiding the deformation of the steel profile sample 001 during the clamping process, and the stress concentration of the steel profile sample 001 at the clamping position, which affects the strength test of the steel profile sample 001. At this time, the fixation of the two ends of the steel profile sample 001 is completed. Repeat the above operation to fix each steel profile sample 001 on this testing equipment in turn.

[0044] Then control the moving end 6 to move rightward to stretch the steel profile sample 001, as shown in FIG. Figure 5 As shown, at this time, the convex strips provided on the friction surface 1302 are deformed during the stretching process of the steel profile sample 001, and are deformed in the direction opposite to the movement of the moving end 6, and the two adjacent second wedge surfaces 1301 are in an eight-shaped shape. Therefore, during the stretching process of the steel profile sample 001, the steel profile sample 001 contacts the friction surface 1302, so that the contact block 13 moves in the direction opposite to the movement of the moving end 6, so that the two adjacent contact blocks 13 are closer to the steel profile sample 001, thereby achieving increased adaptability of the clamping force of the steel profile sample 001 during the stretching process of the steel profile sample 001, and the clamping of the steel profile sample 001 is more stable, effectively avoiding the situation in which the steel profile sample 001 is loosened as the pulling force on the steel profile sample 001 increases, and the clamping force of the steel profile sample 001 does not change, causing the steel profile sample 001 to lose its fixation and swing, which may easily pose a hidden danger to the personal safety of the staff.

[0045] The steel profile sample 001 is continuously stretched until the steel profile sample 001 breaks, and multiple samples are tested simultaneously by a single tensile force. If the strength of the steel profile sample 001 is inconsistent, the time of fracture of the steel profile sample 001 will be inconsistent. The impact generated by the steel profile sample 001 that breaks first at the moment of fracture, if it is transmitted to other steel profile samples 001, will affect the strength test results of other steel profile samples 001. T-shaped plates 105 and shock-absorbing parts 104 arranged in a herringbone shape are added at both ends of the steel profile sample 001 to absorb the instantaneous impact generated by the steel profile sample 001 when it breaks. Before tightening and fixing the steel profile sample 001, the movable end 6 needs to be moved to the left until the T-shaped plate 105 on the right is aligned with the steel profile sample 001. The right end of the steel sample 001 is in contact with the steel sample 001, and then the right T-shaped plate 105 is used to push the steel sample 001 to move to the left until the left T-shaped plate 105 contacts the left end of the steel sample 001, and then the steel sample 001 is clamped and fixed, and then the steel sample 001 is stretched. When the steel sample 001 breaks, there is an instantaneous impact on the fixed position of the steel sample 001 along the extension direction of the tension, and the steel sample 001 drives the contact block 13 to move in the extension direction of the tension. At this time, the convex strips on the friction surface 1302 absorb part of the impact energy while recovering, and then the steel sample 001 transfers the remaining instantaneous impact to the corresponding T-shaped plate 105, and then the T-shaped plate 105 is transmitted to the shock absorber 104 arranged in a herringbone shape through the sleeve rod 102, as shown in FIG. Figure 6 As shown, the shock absorber 104 undergoes adaptive outward bending deformation to complete the absorption of the remaining impact energy of the steel profile sample 001, effectively preventing the impact energy of the fracture from being transmitted to the positions of other samples when one of the samples breaks, causing uneven tensile loading on other samples and inaccurate strength data measured for the later-fractured steel profile sample 001. By performing simultaneous tensile testing on multiple groups of steel profile samples 001, the testing efficiency is effectively improved.

[0046] Second embodiment

[0047] On the basis of the first embodiment, according to Figure 2 and Figure 7-9As shown, it also includes a suction pipe 201, a junction box 202 and an electrically controlled air valve 203; four suction pipes 201 distributed front and back are welded between the fixed end 5 and the movable end 6; the left ends of all the suction pipes 201 are commonly connected to the air circulator 3; the upper part of each suction pipe 201 is connected to two junction boxes 202 distributed left and right; the interior of each support block 7 is hollowed out and provided with a partition 7001; each partition 7001 divides the space inside the corresponding support block 7 into two symmetrical cooling chambers 7002; each cooling chamber 7002 is connected to a plurality of first air holes 7003 at the upper part; the first air holes 7003 are used to extract the air inside the corresponding steel profile sample 001 to cool the steel profile sample 001; the lower parts of each adjacent two cooling chambers 7002 are commonly connected to a junction box 202 through a connecting pipe; an electrically controlled air valve 203 is installed on the left part of each suction pipe 201.

[0048] Each support block 7 is also provided with a plurality of transverse air flow grooves 7004; each air flow groove 7004 is connected to a plurality of first air holes 7003, which is used to increase the efficiency of the first air holes 7003 in sucking air from the inside of the corresponding steel profile sample 001, thereby facilitating cooling of the corresponding steel profile sample 001.

[0049] according to Figure 2 and Figure 8-9 As shown, fins 204 are also included; a fin 204 is welded on each air flow slot 7004; the fins 204 are wedge-shaped heat conducting fins; the fins 204 are used to contact the steel profile sample 001 and conduct the heat generated on the steel profile sample 001 to the fins 204.

[0050] However, a large amount of heat will be generated for the steel profile sample 001. If the steel profile sample 001 needs to be loaded for a long time and the heat is not discharged in time, the heat will affect the silicone layer on the friction surface 1302, and the silicone layer will melt. The silicone can no longer maintain its initial state, causing the silicone layer to lose its shock absorption ability. At this time, air is extracted through the air circulator 3, and the air circulator 3 extracts the air in the support block 7 through the suction pipe 201 and the junction box 202. The support block 7 draws air into the corresponding cooling chamber 7002 through the first air hole 7003 and the air flow groove 7004 thereon, and the upper part of the support block 7 is in close contact with the inner surface of the steel profile sample 001. The high temperature generated at the clamping part of the steel profile sample 001 is heat-conducted to the air nearby, and at this time, the air circulator 3 arranged on each air flow groove 7004 Wedge-shaped fins 204, fins 204 are in contact with the inner wall of steel profile sample 001, and the heat on steel profile sample 001 is conducted to fins 204, realizing rapid heat dissipation of steel profile sample 001, and then air is extracted through the first air hole 7003 and the air flow groove 7004, and the heated air is extracted, while also dissipating heat to fins 204, so that fins 204 can continue to conduct heat with steel profile sample 001, stabilize the temperature of steel profile sample 001, and effectively reduce the temperature of the clamping position of steel profile sample 001, avoiding affecting the state of the silicone layer under high temperature conditions, causing the silicone layer to melt, and the silicone layer to lose its shock absorption ability, that is, when steel profile sample 001 breaks, there will be residual impact energy that is not absorbed and is transferred to other steel profile samples 001.

[0051] The third embodiment

[0052] On the basis of the second embodiment, according to Figure 1 and Figure 10-12 As shown, it also includes a transverse plate 301, a water-absorbing member 302 and a scraper member 303; each cooling chamber 7002 is connected to a transverse plate 301 on the upper part; each transverse plate 301 is a hollow tube; each adjacent two transverse plates 301 are welded with a water-absorbing member 302 on the side away from the supporting block 7, and the water-absorbing member 302 is an arc-shaped plate; the water-absorbing member 302 is provided with a sponge water-absorbing layer on the side away from the transverse plate 301; the water-absorbing member 302 is connected to a scraper member 303 on the side away from the supporting block 7; the two ends of the scraper member 303 are scraping parts; the scraper member 303 is an arc-shaped structure.

[0053] according to Figure 1 and Figure 10-12As shown, it also includes an air pipe 304, a second electric actuator 305, a pull rope 306, a suction head 307 and a collection bucket 308; the scraper 303 is a hollow thin plate; each cross plate 301 is connected to an air pipe 304; every two adjacent air pipes 304 are connected to the scraper 303; each upper part of each support block 7 is bolted with a second electric actuator 305; the second electric actuator 305 is an electric push rod; the telescopic part of each second electric actuator 305 passes through the corresponding water absorbing part 302 and the scraper 303 in sequence; the telescopic part of each second electric actuator 305 Each is connected to two pull ropes 306; each scraper member 303 is bolted to two suction heads 307 distributed front and back on the side away from the horizontal plate 301; each suction head 307 is welded to a pull rope 306; each suction head 307 is provided with a filter; each suction head 307 has a collecting bucket 308 welded to the lower part; each scraper member 303 is welded to the corresponding collecting bucket 308; the scraper member 303 is provided with two rows of second air holes 30301 distributed front and back on the side away from the horizontal plate 301; each suction head 307 is connected to the corresponding second air hole 30301.

[0054] Before fixing the steel profile sample 001, due to its special structural shape, the inner wall of the steel profile sample 001 cannot be effectively processed before it is clamped and fixed. If sand and gravel and other particles adhere to the inner wall of the steel profile sample 001, the sand and gravel particles are located between the steel profile sample 001 and the supporting block 7. If the steel profile sample 001 is pulled at this time, the sand and gravel particles roll, which can easily cause the steel profile sample 001 to loosen. At this time, before the left end of the steel profile sample 001 is placed into the supporting block 7, the second electric actuator 305 is controlled to extend. The two pull ropes 306 connected to the telescopic part of the second electric actuator 305 are used to control the bending degree of the scraper member 303. Figure 11 As shown, as the second electric actuator 305 extends, the curvature of the scraper 303 increases, and the distance between the two scraper parts of the scraper 303 becomes farther, until the inner wall of the groove at the left end of the steel profile sample 001 contacts the two scraper parts of the scraper 303, and the scraper parts on the scraper 303 scrape against the inner wall of the steel profile sample 001 to scrape away the granular impurities on the inner wall of the steel profile sample 001. At the same time, the cooling chamber 7002 passes through the horizontal plate 301, the air pipe 304 and the second air hole in sequence. 30301 is used for vacuuming, and the second air hole 30301 is used for suction through the suction head 307. The sand and gravel shoveled off by the scraper is sucked by the suction head 307 and gathered on the filter screen. When the vacuuming is stopped, the sand and gravel on the filter screen fall downward and are collected in the collecting bucket 308 below, thereby preventing the inner wall of the steel profile sample 001 from being contaminated with sand and gravel, affecting the fixation of the steel profile sample 001, causing the steel profile sample 001 to loosen, and affecting the detection process of the steel profile sample 001.

[0055] During the production process or when the steel profile sample 001 is being stacked, water vapor enters the groove of the steel profile sample 001 and condenses in the groove of the steel profile sample 001. At this time, the inner wall of the steel profile sample 001 contains moisture, which cannot be removed by the scraper 303 alone. If there is a water film between the support block 7 and the steel profile sample 001, the support block 7 and the steel profile sample 001 cannot be in close contact, and the fixing effect of the steel profile sample 001 will be greatly reduced. Buckle, so a water absorbing member 302 is added to the rear of the scraping member 303. While scraping the groove of the steel profile sample 001, the water absorbing member 302 also moves closely to the inner wall of the groove of the steel profile sample 001. The water absorbing member 302 absorbs the moisture on the inner wall of the groove of the steel profile sample 001. At the same time, the cooling chamber 7002 absorbs the moisture on the water absorbing member 302 through the horizontal plate 301, and then enters the junction box 202 through the cooling chamber 7002, and finally passes through the junction box 20 2 and the suction pipe 201 enter the air circulator 3 for drying and removing moisture. At this time, the moisture in the clamped and fixed position is removed. Then, after the steel profile sample 001 is fixed, since it is necessary to inhale along the inner wall of the steel profile sample 001, if the moisture in other positions of the inner wall of the steel profile sample 001 is brought into the air circulator 3 by the inhaled air, the moisture that the air circulator 3 needs to handle increases, and the working pressure of the air circulator 3 also increases. At this time, the second electric actuator 305 is controlled to contract, and the scraping parts of the scraping member 303 are pulled closer to each other under the traction of the two pull ropes 306. The curvature of the scraping member 303 is reduced, and the scraping part of the scraping member 303 is separated from the inner wall of the groove of the steel profile sample 001. At this time, only the water absorbing member 302 is blocked at the position of the air flow groove 7004. During the air extraction process, the air must first pass through the water absorbing member 302 before it can reach the position of the air flow groove 7004, and the water absorbing member 302 fully absorbs the moisture.

[0056] After completing the inspection of the steel profile sample 001 and loosening the fixation of the steel profile sample 001, the second electric actuator 305 is controlled to reset, so that the curvature of the scraper member 303 returns to its initial state, and the water absorbing member 302 expands after absorbing water. When the scraper member 303 is reset, it squeezes out the water on the water absorbing member 302, effectively preventing water from being retained in the water absorbing member 302 and affecting the subsequent moisture absorption effect of the water absorbing member 302.

[0057] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A lightweight steel profile strength testing device, comprising a testing platform (1); a control console (2) is installed on the right side of the testing platform (1); an air circulator (3) is fixedly connected to the left side of the testing platform (1); a tension component is connected to the testing platform (1); the tension component is used to provide power for stretching the steel profile sample (001); the left side of the control console (2) is connected to the tension component; the tension component is connected to a plurality of support blocks (7); the tension component is connected to a plurality of mounting frames (8); the mounting frames (8) correspond to the support blocks (7); each mounting frame (8) is connected to a plurality of limit plates (9); each of the two adjacent limit plates (9) is respectively installed with a first electric actuator (10) on the opposite side; each telescopic portion of each first electric actuator (10) is fixedly connected to two connecting plates (11); characterized in that, The invention also includes a connecting rod (12); each connecting plate (11) is fixedly connected to a connecting rod (12); each two adjacent connecting rods (12) are fixedly connected to a contact block (13); each limiting plate (9) is provided with a first wedge surface (9001); each contact block (13) is provided with a second wedge surface (1301); each second wedge surface (1301) is in contact with a first wedge surface (9001); each contact block (13) is provided with a friction member on a side away from the second wedge surface (1301). Friction surfaces (1302); each steel profile sample (001) is placed between two adjacent friction surfaces (1302), and two adjacent contact blocks (13) are used to clamp and fix the exterior of the corresponding steel profile sample (001); a plurality of shock absorbing components are connected to the air circulator (3); the right portion of the movable end (6) is connected to the plurality of shock absorbing components; each shock absorbing component corresponds to a steel profile sample (001); the shock absorbing components are used to absorb the impact on both ends of the steel profile sample (001) when the steel profile sample (001) is stretched to fracture; The tension assembly includes a screw rod (4); the left portion of the control console (2) is rotatably connected to a plurality of screw rods (4); the left portions of all the screw rods (4) are rotatably connected to a fixed end (5); the lower portion of the fixed end (5) is fixedly connected to the inspection table (1); all the screw rods (4) are rotatably connected to a movable end (6); the fixed end (5) and the movable end (6) are each connected to a plurality of supporting blocks (7); the fixed end (5) and the movable end (6) are each fixedly connected to a plurality of mounting brackets (8); It also includes a suction pipe (201); a plurality of suction pipes (201) are fixedly connected between the fixed end (5) and the movable end (6); the left ends of all the suction pipes (201) are commonly connected to the air circulator (3); the upper part of each suction pipe (201) is connected to a plurality of junction boxes (202); the interior of each support block (7) is hollowed out and provided with a partition (7001); each partition (7001) divides the inner space of the corresponding support block (7) into two symmetrical cooling chambers (7002); the upper part of each cooling chamber (7002) is connected to a plurality of first air holes (7003); the first air holes (7003) are used to extract the air inside the corresponding steel profile sample (001); the lower parts of each two adjacent cooling chambers (7002) are commonly connected to a junction box (202) through a connecting pipe; the left part of each suction pipe (201) is respectively provided with an electric control air valve (203); The apparatus further comprises a transverse plate (301); each cooling chamber (7002) is connected to an upper portion thereof with a transverse plate (301); each transverse plate (301) is a hollow tube; each of two adjacent transverse plates (301) is fixedly connected to a water-absorbing member (302) on a side away from the supporting block (7); the water-absorbing member (302) is an arc-shaped plate; the water-absorbing member (302) is provided with a sponge water-absorbing layer on a side away from the transverse plate (301); the water-absorbing member (302) is connected to a scraper member (303) on a side away from the supporting block (7); both ends of the scraper member (303) are scraper portions; the scraper member (303) is an arc-shaped structure.

2. The lightweight steel profile strength testing equipment according to claim 1, characterized in that: A silica gel shock-absorbing layer is provided on the friction surface (1302), and a plurality of convex strips that are not parallel to the plane of the detection platform (1) are provided on the shock-absorbing layer.

3. The lightweight steel profile strength testing equipment according to claim 1, characterized in that: The shock-absorbing assembly includes a fixing seat (101); a plurality of fixing seats (101) are fixedly connected to the upper part of the air circulator (3); a sleeve rod (102) is fixedly connected to each fixing seat (101); a connecting rod (103) is fixedly connected to the side of each sleeve rod (102) facing the supporting block (7); the connecting rod (103) is a vertical plate; a plurality of shock-absorbing members (104) are fixedly connected to the connecting rod (103); a sliding rod (106) is slidably connected in each sleeve rod (102); each sliding rod (106) is fixedly connected to a T-shaped plate (105) on the side facing the supporting block (7); two corresponding T-shaped plates (105) on the left and right are used to support the two ends of the corresponding steel profile sample (001); each T-shaped plate (105) is in contact with and cooperates with the corresponding shock-absorbing member (104).

4. The lightweight steel profile strength testing equipment according to claim 3, characterized in that: The shock absorbing member (104) has a wedge-shaped structure and is made of a tough alloy material.

5. The lightweight steel profile strength testing equipment according to claim 1, characterized in that: Each supporting block (7) is also provided with a plurality of transverse air flow grooves (7004); each air flow groove (7004) is connected to a plurality of first air holes (7003).

6. The lightweight steel profile strength testing equipment according to claim 5, characterized in that: It also includes fins (204); each air flow groove (7004) is fixedly connected to a fin (204); the fins (204) are wedge-shaped heat conducting fins; the fins (204) are used to contact the steel profile sample (001) and conduct the heat generated on the steel profile sample (001) to the fins (204).

7. The lightweight steel profile strength testing equipment according to claim 6, characterized in that: The scraping member (303) is a hollow thin plate; each horizontal plate (301) is connected to an air pipe (304); each adjacent air pipe (304) is connected to the scraping member (303); each supporting block (7) is fixed with a second electric actuator (305) on the upper part; each second electric actuator (305) has a telescopic portion that passes through the corresponding water absorbing member (302) and the scraping member (303) in sequence; each second electric actuator (305) has a telescopic portion that is connected to two pull ropes (306); each scraping member (303) A plurality of suction heads (307) are fixedly connected to one side away from the horizontal plate (301); each suction head (307) is fixedly connected to a pull rope (306); each suction head (307) is provided with a filter; a collection bucket (308) is fixedly connected to the lower portion of each suction head (307); each scraper member (303) is fixedly connected to a corresponding collection bucket (308); the scraper member (303) is provided with a plurality of second air holes (30301) on the side away from the horizontal plate (301); and each suction head (307) is communicated with a corresponding second air hole (30301).

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