Steel fiber reinforced concrete anti-impact device

Abstract

The utility model provides a steel fiber reinforced concrete anti-impact device, and particularly relates to the technical field of concrete anti-impact. The device comprises a base, a top frame and an impact block, wherein the top frame is fixed at the top of the base; a control panel is arranged on one side of the top frame; a supporting plate and a fixing plate are horizontally arranged in the top frame from top to bottom in sequence. The supporting plate slides up and down in the top frame through the lifting mechanism. A clamping mechanism is arranged at the bottom of the supporting plate; the impact block is fixed or released through the clamping mechanism; a fixing mechanism is arranged at the top of the fixing plate and corresponds to the position under the impact block, and a recycling box is arranged at the bottom of the fixing plate. According to the utility model, the to-be-tested steel fiber reinforced concrete test piece is placed in the barrier box, and the lifting mechanism is adjusted to complete the impact strength test of the impact block on the to-be-tested steel fiber reinforced concrete test piece under the impact force of different heights and record the test result; and meanwhile, the harm to operators caused by falling impact blocks and impacted concrete chippings is effectively prevented.

Description

Technical Field

[0001] This utility model relates to the field of concrete impact resistance technology, specifically to a steel fiber reinforced concrete impact resistance device. Background Technology

[0002] Concrete is a general term for engineering composite materials that bind aggregates together with cementing materials. Generally speaking, concrete refers to cement concrete, which is made by mixing cement as the cementing material, sand and gravel as aggregates, and water in a certain proportion. In construction, the impact resistance of concrete is extremely important. To improve the impact resistance of concrete, steel fibers, which have good bonding properties, can be incorporated. When steel fiber reinforced concrete is manufactured into blocks, it is necessary not only to test its compressive strength but also its impact resistance to determine its impact resistance and the scope of its application.

[0003] Currently, when conducting impact tests on steel fiber reinforced concrete, a free-falling heavy block is usually used to impact the steel fiber reinforced concrete. However, after the heavy block impacts the steel fiber reinforced concrete block, it may roll to any place and injure workers. In addition, the impacted steel fiber reinforced concrete will also produce flying debris, which poses a safety hazard and is not easy to recycle and clean up. Utility Model Content

[0004] To overcome the shortcomings of the prior art, this utility model provides a steel fiber reinforced concrete impact-resistant device, the specific technical solution of which is as follows:

[0005] A steel fiber reinforced concrete impact-resistant device includes a base, a top frame, and an impact block. The top frame is fixed to the top of the base. A control panel is provided on one outer side wall of the top frame. A support plate and a fixing plate are horizontally arranged from top to bottom inside the top frame. The fixing plate is fixedly connected to the inner side wall of the top frame, and the support plate slides up and down inside the top frame via a lifting mechanism. A clamping mechanism is provided at the bottom of the support plate. The impact block is fixed or released via the clamping mechanism. A fixing mechanism is provided at the top of the fixing plate corresponding to the position directly below the impact block, and a detachable recycling bin is provided at the bottom of the fixing plate.

[0006] Preferably, the lifting mechanism includes a first servo motor, a drive gear, two transmission gears, and two threaded rods vertically disposed between the top plate of the top frame and the fixed plate; the first servo motor is located between the two threaded rods and fixed to the bottom of the top plate of the top frame; the drive gear is sleeved on the output shaft of the first servo motor, and the two transmission gears are respectively sleeved on the two threaded rods and correspond to the position of the drive gear; the drive gear meshes with both transmission gears.

[0007] Preferably, the support plate has two threaded holes corresponding to the positions of the two threaded rods, and the threaded rods of the lifting mechanism are threadedly connected to the threaded holes of the support plate; the support plate has connecting ear plates on its left and right sides, and the connecting ear plates have positioning through holes.

[0008] Preferably, the top frame has guide grooves on its left and right side walls, and guide rods are symmetrically arranged in the guide grooves along their length. The support plate is slidably connected to the guide rods of the top frame through positioning through holes.

[0009] Preferably, the fixing plate has a first mounting hole corresponding to the position of the threaded rod, and the top plate of the top frame has a second mounting hole corresponding to the position of the threaded rod; bearings are installed in the first and second mounting holes, and the two ends of the threaded rod are rotatably connected to the top plate of the top frame and the mounting hole of the fixing plate through the bearings respectively; a recycling port is provided at the center of the fixing plate, and the recycling port is connected to the recycling box.

[0010] Preferably, a connecting rod is provided on the top of the impact block; a locking block is provided at the end of the connecting rod away from the impact block; the diameter of the connecting rod is smaller than the outer diameter of the locking block.

[0011] Preferably, the clamping mechanism is disposed at the center of the bottom of the support plate along the width direction of the support plate, and includes a second servo motor, a lead screw, a first clamping member, and a second clamping member; the lead screw is a double-rotation lead screw, including a first lead screw section and a second lead screw section, the surface thread directions of the first lead screw section and the second lead screw section are opposite; the first clamping member and the second clamping member have the same structure and are arranged opposite to each other, each including a vertical section and a horizontal section; the vertical section of the first clamping member is threadedly connected to the first lead screw section through a threaded hole; the vertical section of the second clamping member is threadedly connected to the second lead screw section through a threaded hole. The lever is threaded; both the first and second clamping members have semi-cylindrical clamping grooves on the side of their horizontal portions away from the vertical portions, and the two clamping grooves are joined to form a complete cylindrical clamping through hole; the diameter of the clamping through hole is smaller than the outer diameter of the clamping block; the diameter of the clamping through hole is equal to the diameter of the connecting rod; the output shaft of the second servo motor is fixed to one end of the lead screw, and the other end of the lead screw is connected to the bearing seat at the bottom of the support plate through a bearing; the second servo motor is fixed to the bottom of the support plate through a motor bracket.

[0012] More preferably, the fixing mechanism includes a cuboid barrier box with openings at the top and bottom. Inside the barrier box are two electric push rods symmetrically arranged along a central axis. Each electric push rod has a claw at the end away from the inner side wall of the barrier box, and the two claws are arranged opposite each other.

[0013] Furthermore, preferably, the first servo motor, the second servo motor, and the electric push rod are all electrically connected to the control panel.

[0014] More preferably, the base is provided with leveling support feet at the four corners.

[0015] The beneficial effects of this utility model are:

[0016] 1. This utility model can adjust the height of the impact block through a lifting mechanism, thereby adjusting the impact force of the impact block; and can control the fixing or releasing of the impact block through a clamping mechanism;

[0017] 2. The barrier box with a fixing mechanism in this utility model can effectively solve the safety hazards to operators caused by impact blocks and debris from the steel fiber reinforced concrete specimens to be tested;

[0018] 3. This utility model, by setting an electric push rod and a chuck, can center the steel fiber reinforced concrete specimen to be tested, thereby improving the accuracy of the impact test results;

[0019] 4. By setting leveling support feet at the four corners of the base, this utility model can effectively level the device and improve the accuracy of test results. Attached Figure Description

[0020] The accompanying drawings constituting this utility model are provided to further understand this application and do not constitute an undue limitation on this application.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the lifting mechanism of this utility model;

[0023] Figure 3 This is a schematic diagram of the clamping mechanism of this utility model;

[0024] Figure 4 This is a schematic diagram of the fixing mechanism of this utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the impact block of this utility model;

[0026] In the diagram, 1-base; 101-leveling support foot; 2-top frame; 201-guide rod; 3-support plate; 301-first servo motor; 3011-drive gear; 302-threaded rod; 3021-transmission gear; 303-second servo motor; 304-lead screw; 3041-first lead screw section; 3042-second lead screw section; 3051-first clamping component; 3052-second clamping component; 3053-clamping through hole; 306-bearing seat; 4-barrier box; 401-electric push rod; 402-claw; 403-recovery port; 5-fixing plate; 501-first mounting hole; 6-impact block; 601-clamping block; 7-recovery box; 8-control panel. Detailed Implementation

[0027] The specific implementation of the steel fiber reinforced concrete impact-resistant device provided by this utility model will be further described with reference to the accompanying drawings and embodiments.

[0028] like Figure 1 As shown, a steel fiber reinforced concrete impact-resistant device includes a base 1, a top frame 2, and an impact block 6. Specifically, the top frame 2 is fixed to the top of the base 1. A control panel 8 is provided on one outer side wall of the top frame 2. A support plate 3 and a fixing plate 5 are horizontally arranged from top to bottom inside the top frame 2. The fixing plate 5 is fixedly connected to the inner side wall of the top frame 2. The support plate 3 slides up and down inside the top frame 2 through a lifting mechanism, thereby adjusting the height of the impact block 6. A clamping mechanism is provided at the bottom of the support plate 3, through which the impact block 6 is fixed or released. A fixing mechanism for placing the steel fiber reinforced concrete specimen to be tested is provided on the top of the fixing plate 4, corresponding to the position directly below the impact block 6.

[0029] like Figure 2 As shown, the lifting mechanism includes a first servo motor 301, a drive gear 3011, two transmission gears 3021, and two threaded rods 302 vertically arranged between the top plate of the top frame 2 and the fixed plate 5. Specifically, the first servo motor 301 is located between the two threaded rods 302 and fixed to the bottom of the top plate of the top frame 2; the drive gear 3011 is sleeved on the output shaft of the first servo motor 301, and the two transmission gears 3021 are respectively sleeved on the two threaded rods 302 and correspond to the position of the drive gear 3011; the drive gear 3011 is meshed with both transmission gears 3021. By controlling the rotation of the first servo motor 301, the drive gear 3011 is driven to rotate, which in turn drives the two transmission gears 3021 meshing with it to rotate synchronously in the forward (or reverse) direction, ultimately realizing the rotation adjustment of the threaded rods 302.

[0030] Preferably, the support plate 3 has two threaded holes corresponding to the positions of the two threaded rods 302. The threaded rods 302 of the lifting mechanism are threadedly connected to the threaded holes of the support plate 3, thereby realizing the up and down movement of the support plate 3 within the top frame 2. Connecting ear plates are provided on the left and right sides of the support plate 3, and the connecting ear plates are provided with positioning through holes.

[0031] Preferably, in order to ensure that the support plate 3 is stable and does not tilt when adjusting the height of the support plate 3, the left and right side walls of the top frame 2 are provided with guide grooves, and guide rods 201 are symmetrically arranged in the guide grooves along their length direction. The support plate 3 is slidably connected to the guide rods 201 of the top frame 2 through positioning through holes.

[0032] Preferably, the surface of the guide rod 201 is polished and coated with lubricating oil, which can effectively reduce the frictional resistance between the positioning through hole and the guide rod 201, thereby avoiding jamming caused by the movement of the support plate 3.

[0033] To ensure smooth rotation of the threaded rod 302 and prevent jamming or wobbling, the fixing plate 5 has a first mounting hole 501 corresponding to the position of the threaded rod 302, and the top plate of the top frame 2 has a second mounting hole corresponding to the position of the threaded rod 302. It is worth noting that bearings are installed in both the first and second mounting holes, and both ends of the threaded rod 302 are rotatably connected to the top plate of the top frame 2 and the first mounting hole 501 of the fixing plate 5 via the bearings. As a supplement, lubricating oil can be added to the bearings periodically to reduce friction between the threaded rod 302 and the bearings, thereby extending their service life.

[0034] To facilitate the recycling of residue from the steel fiber reinforced concrete specimens to be tested, a detachable recycling box 7 is provided at the bottom of the fixing plate 5. A recycling port 403 communicating with the recycling box 7 is provided at the center of the fixing plate 5. After the test, the residue from the steel fiber reinforced concrete specimens to be tested only needs to be cleaned into the recycling box 7 through the recycling port 403, and then the detachable recycling box 7 can be removed and cleaned.

[0035] like Figure 3 As shown, the clamping mechanism is located at the bottom center of the support plate 3 along the width direction of the support plate, and includes a second servo motor 303, a lead screw 304, a first clamping member 3051, and a second clamping member 3052. The output shaft of the second servo motor 303 is fixed to one end of the lead screw 304, and the other end of the lead screw 304 is connected to a bearing seat 306 at the bottom of the support plate 3 via a bearing. The second servo motor 303 is fixed to the bottom of the support plate 3 via a motor bracket. It is worth noting that the lead screw 304 is a double-rotating lead screw, including a first lead screw section 3041 and a second lead screw section 3042, wherein the thread directions on the surfaces of the first lead screw section 3041 and the second lead screw section 3042 are opposite.

[0036] Preferably, the first clamping member 3051 and the second clamping member 3052 have the same structure and are arranged opposite each other (to facilitate clamping the impact block 6), and both include a vertical part and a horizontal part; specifically, the vertical part of the first clamping member 3051 is threadedly connected to the first lead screw part 3041 through a threaded hole; the vertical part of the second clamping member 3052 is threadedly connected to the second lead screw part 3042 through a threaded hole; the horizontal part of the first clamping member 3051 and the second clamping member 3052 are provided with a semi-cylindrical clamping groove on the side away from the vertical part, and when the two clamping grooves are joined together, a complete cylindrical clamping through hole 3053 can be formed.

[0037] like Figure 5 As shown, a connecting rod is provided on the top of the impact block 6; a locking block 601 is provided at the end of the connecting rod away from the impact block 6. It is worth noting that the diameter of the connecting rod is smaller than the outer diameter of the locking block 601; the diameter of the clamping through hole 3053 is smaller than the outer diameter of the locking block 601; and the diameter of the clamping through hole 3053 is equal to the diameter of the connecting rod. During installation, with the locking block 601 facing upwards, it is only necessary to control the second servo motor 303 to move the first clamping member 3051 and the second clamping member 3052 relative to each other until the clamping through hole 3053 firmly clamps the connecting rod section below the locking block 601, thus completing the fixation of the impact block 6. When an impact resistance test is required, it is only necessary to control the second servo motor 303 in the opposite direction to move the first clamping member 3051 and the second clamping member 3052 in the opposite direction. At this time, the impact block 6 can be released from the clamping device and undergo free fall.

[0038] like Figure 4 As shown, the fixing mechanism includes a cuboid barrier box 4 with openings at the top and bottom. Inside the barrier box 4, there are two electric push rods 401 symmetrically arranged along a central axis. Each electric push rod 401 has a claw 402 at one end away from the inner wall of the barrier box 4. The two claws 402 are arranged opposite each other. In use, the steel fiber reinforced concrete specimen to be tested is placed between the two claws 402, and the electric push rods 401 are adjusted in coordination with the claws 402 to clamp and fix the steel fiber reinforced concrete specimen to be tested and complete the centering adjustment.

[0039] It is worth noting that the first servo motor 301, the second servo motor 302, and the electric push rod 401 are all controlled by the control panel 8.

[0040] More preferably, in order to ensure the accuracy of the test results of the device, leveling support feet 101 are provided at the four corners of the base 1. Before the test, the entire device is leveled and locked, which improves stability and reduces test errors caused by external factors.

[0041] In use, first adjust the leveling support feet to stabilize the device, place the steel fiber reinforced concrete specimen to be tested in the barrier box 4, adjust the electric push rod 401 for centering and make the jaws 402 firmly clamp the specimen; then turn on the first servo motor 301, which drives the transmission gear 3021 to rotate synchronously through the drive gear 3011, thereby rotating the threaded rod 302 and adjusting the support plate 3 to the required height; then turn on the second servo motor 303 to move the first clamping member 3051 and the second clamping member 3052 in opposite directions until the clamping through hole 305 is released. 3. The clamping block 601 is restricted, causing the impact block 6 to fall downwards in free fall, thus completing one impact on the steel fiber reinforced concrete specimen to be tested inside the barrier box 4. For the next impact, simply control the second servo motor 303 to move the first clamping member 3051 and the second clamping member 3052 in the same direction until the clamping through hole 3053 clamps the connecting rod, completing the fixing of the impact block 6. Then, adjust the support plate 3 to the required height again, repeating the above steps until the steel fiber reinforced concrete specimen to be tested is damaged, and record the experimental results. During this process, the barrier box 4 can block the debris generated by the impact block 6 and the steel fiber reinforced concrete specimen to be tested, avoiding safety hazards to the operators.

[0042] In this utility model, terms such as "upper," "lower," "bottom," and "top" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are merely used to facilitate the description of the structural relationships of the various components or elements of this utility model and do not specifically refer to any part or element of this utility model; they should not be construed as limiting this utility model. Terms such as "connected" and "linked" should be interpreted broadly, indicating a fixed connection, an integral connection, or a detachable connection; a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be determined according to the specific circumstances, and they should not be construed as limiting this utility model.

[0043] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A steel fiber reinforced concrete impact-resistant device, characterized in that, It includes a base, a top frame, and an impact block; the top frame is fixed to the top of the base; A control panel is provided on one outer side wall of the top frame; a support plate and a fixing plate are arranged horizontally from top to bottom inside the top frame; the fixing plate is fixedly connected to the inner side wall of the top frame, and the support plate slides up and down inside the top frame through a lifting mechanism; The bottom of the support plate is provided with a clamping mechanism; the impact block is fixed or released by the clamping mechanism. A fixing mechanism is provided at the top of the fixing plate corresponding to the position directly below the impact block, and a detachable recycling bin is provided at the bottom of the fixing plate.

2. The steel fiber reinforced concrete impact-resistant device according to claim 1, characterized in that, The lifting mechanism includes a first servo motor, a drive gear, two transmission gears, and two threaded rods vertically arranged between the top plate of the top frame and the fixed plate. The first servo motor is located between two threaded rods and fixed to the bottom of the top plate of the top frame; the drive gear is sleeved on the output shaft of the first servo motor, and the two transmission gears are respectively sleeved on the two threaded rods and correspond to the position of the drive gear; the drive gear meshes with both transmission gears.

3. The steel fiber reinforced concrete impact-resistant device according to claim 2, characterized in that, The support plate has two threaded holes corresponding to the positions of the two threaded rods, and the threaded rods of the lifting mechanism are threadedly connected to the threaded holes of the support plate. The support plate is provided with connecting ear plates on the left and right sides, and the connecting ear plates are provided with positioning through holes.

4. The steel fiber reinforced concrete impact-resistant device according to claim 3, characterized in that, The top frame has guide grooves on its left and right side walls, and guide rods are symmetrically arranged in the guide grooves along their length. The support plate is slidably connected to the guide rods of the top frame through positioning through holes.

5. The steel fiber reinforced concrete impact-resistant device according to claim 2, characterized in that, The fixing plate has a first mounting hole corresponding to the position of the threaded rod, and the top plate of the top frame has a second mounting hole corresponding to the position of the threaded rod; bearings are installed in the first mounting hole and the second mounting hole, and the two ends of the threaded rod are rotatably connected to the top plate of the top frame and the mounting hole of the fixing plate through the bearings respectively. A recycling port is provided at the center of the fixed plate, and the recycling port is connected to the recycling bin.

6. The steel fiber reinforced concrete impact-resistant device according to claim 2, characterized in that, A connecting rod is provided on the top of the impact block; a locking block is provided at the end of the connecting rod away from the impact block; the diameter of the connecting rod is smaller than the outer diameter of the locking block.

7. The steel fiber reinforced concrete impact-resistant device according to claim 6, characterized in that, The clamping mechanism is located at the bottom center of the support plate along the width direction of the support plate, and includes a second servo motor, a lead screw, a first clamping component, and a second clamping component. The lead screw is a double-direction lead screw, including a first lead screw section and a second lead screw section, and the surface thread directions of the first lead screw section and the second lead screw section are opposite. The first clamping member and the second clamping member have the same structure and are arranged opposite to each other, each including a vertical part and a horizontal part; the vertical part of the first clamping member is threadedly connected to the first lead screw part through a threaded hole; the vertical part of the second clamping member is threadedly connected to the second lead screw part through a threaded hole; a semi-cylindrical clamping groove is provided on the side of the horizontal part of the first clamping member and the second clamping member away from the vertical part, and the two clamping grooves are joined together to form a complete cylindrical clamping through hole; The diameter of the clamping through hole is smaller than the outer diameter of the clamping block; the diameter of the clamping through hole is equal to the diameter of the connecting rod. The output shaft of the second servo motor is fixed to one end of the lead screw, and the other end of the lead screw is connected to the bearing seat at the bottom of the support plate through a bearing; the second servo motor is fixed to the bottom of the support plate through a motor bracket.

8. The steel fiber reinforced concrete impact-resistant device according to claim 7, characterized in that, The fixing mechanism includes a cuboid barrier box with openings at the top and bottom. Inside the barrier box are two electric push rods symmetrically arranged along a central axis. Each electric push rod has a claw at the end away from the inner side wall of the barrier box, and the two claws are arranged opposite each other.

9. The steel fiber reinforced concrete impact-resistant device according to claim 8, characterized in that, The first servo motor, the second servo motor, and the electric push rod are all electrically connected to the control panel.

10. The steel fiber reinforced concrete impact-resistant device according to claim 1, characterized in that, The base is equipped with leveling support feet at its four corners.

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