A wear-resistant testing device for building materials used in construction engineering

Abstract

The invention relates to the technical field of building material detection, in particular to a wear-resistant detection device for building materials used in construction projects. Aiming at the problem that fallen sand and gravel cannot be collected in a centralized manner and concrete corners are easy to collide with grinding balls, a wear-resistant detection device for building materials used in construction projects is provided, comprising a bottom plate, a detection seat is provided at the upper end of the bottom plate, a concrete block is placed on the detection seat, and a clamping device for fixing the concrete block is also provided on the detection seat; an L-shaped seat that can move forward and backward is also provided at the upper end of the bottom plate, a plurality of material receiving grooves are placed at the bottom of the L-shaped seat, a frame is also installed on the L-shaped seat, a rotatable active bevel gear is installed on the frame, a grinding ball is installed at the front end of the active bevel gear, and when the active bevel gear rotates, a structure in which the grinding ball rotates while reciprocating up and down and left and right is formed; the fallen sand and gravel can be collected in a centralized manner, and the corners of the concrete block can be prevented from colliding with the grinding ball during detection.

Description

Technical Field

[0001] The invention relates to the technical field of building material detection, in particular to a building material wear-resistant detection device for construction engineering. Background Art

[0002] Concrete is a building material, which is a mixture of cement, sand, gravel and water. After mixing, it is usually cast and hardened during the curing process to form a strong structural material. In order to ensure the quality of the building, concrete blocks need to be tested for wear resistance before use. Although there are wear-resistant testing equipment for concrete blocks in the prior art, there are still certain defects in the use process. For example, the publication number is: CN117554225A and the name is: A wear-resistant testing equipment for building materials for construction engineering. Although it solves the problem of removing impurities while grinding, it is impossible to collect the fallen sand and gravel in a centralized manner. In addition, when testing the periphery of the upper end surface of the concrete block, the circular motion of the concrete block will cause the edges and corners of the concrete block to collide with the grinding ball, thereby affecting the detection effect. Therefore, a wear-resistant testing equipment for building materials for construction engineering is designed to solve the above-mentioned problems. Summary of the invention

[0003] In view of the fact that fallen sand and gravel cannot be collected centrally and concrete edges and corners are prone to collide with grinding balls, the present invention provides a wear-resistant testing device for building materials for construction projects, which can collect fallen sand and gravel centrally, calculate the corresponding amount of sand falling, and prevent the edges and corners of concrete blocks from colliding with grinding balls during testing, thereby effectively solving the problems mentioned in the above background technology.

[0004] In order to solve the above problems, the technical solution adopted by the present invention is:

[0005] A wear-resistant testing device for building materials for construction engineering, comprising a bottom plate, a testing seat is provided at the upper end of the bottom plate, a concrete block is placed on the testing seat, and a clamping device for fixing the concrete block is also provided on the testing seat; an L-shaped seat that can move forward and backward is also provided at the upper end of the bottom plate, a plurality of material receiving grooves are placed at the bottom of the L-shaped seat, a frame is also installed on the L-shaped seat, a rotatable active bevel gear is installed on the frame, a grinding ball is installed at the front end of the active bevel gear, and when the active bevel gear rotates, a structure is formed in which the grinding ball rotates while reciprocating up and down and reciprocating left and right;

[0006] The inner wall of the frame is slidably connected to a horizontal frame, the lower end of the active bevel gear is meshed with a first driven bevel gear, the inner wall of the first driven bevel gear is fixedly connected to a second threaded cylinder, and the inner wall of the second threaded cylinder is threadedly connected to a second threaded rod fixed to the horizontal frame;

[0007] The upper end of the active bevel gear is meshed with a second driven bevel gear, and the left and right ends of the second driven bevel gear are respectively coaxially fixed with discs, the outer ends of the two discs are respectively provided with pry bars, and one side of the frame is provided with a long pin rod that matches the pry bar.

[0008] A driving box is slidably connected to the horizontal frame, a first motor is fixedly connected to the rear end surface of the driving box, the active bevel gear is fixedly connected to the output end of the first motor, and the grinding ball is installed on the driving box.

[0009] The outer end surface of the disc is fixedly connected with a first sliding pin at a non-center position, and two bearing plates are fixedly connected to the upper side of the rear end surface of the drive box. The pry bars are rotatably connected to the two bearing plates, and the inner walls of the rear end of the pry bars are respectively provided with short key grooves matching with the first sliding pins. The front end of the frame is provided with a long pin rod, and the front end of the pry bars are respectively provided with long key grooves matching with the long pin rods.

[0010] Telescopic rods are fixedly connected to the left and right sides of the rear end surface of the frame respectively, and the long pin rod is fixedly connected to the telescopic ends of the two telescopic rods.

[0011] A long cam is coaxially fixed to the rear end of the active bevel gear, a small slider is slidably connected to the inner wall of the lower end of the drive box, a movable pin matching the long cam is fixed to the inner wall of the small slider, a sleeve is rotatably connected to the inner wall of the drive box, the grinding ball is fixed to the rear end surface of the sleeve, and an inclined groove matching the movable pin is provided on the outer surface of the sleeve.

[0012] The L-shaped seat is slidably connected to the upper end surface of the base plate, a first threaded cylinder is fixedly connected to the inner wall of the L-shaped seat, a first threaded rod that can rotate is threadedly connected to the inner wall of the first threaded cylinder, a plurality of slots are opened on the front side of the upper end surface of the L-shaped seat, and the material receiving slots are respectively placed on the inner walls of the corresponding slots.

[0013] A four-claw frame is fixedly connected to the upper end of the L-shaped seat, and four long guide rods are fixedly connected to the rear end surface of the four-claw frame. Ear plates are fixedly connected to the upper and lower sides of the left and right end surfaces of the frame respectively, and the long guide rods are slidably connected to the corresponding inner walls of the ear plates. First springs that match the ear plates are also respectively sleeved on the outer surfaces of the long guide rods, and anti-slip pads are respectively fixedly connected to the rear end surfaces of the long guide rods. A material receiving port that matches the material receiving trough is fixedly connected to the front end surface of the detection seat.

[0014] The clamping device includes a rotatable bidirectional threaded rod, the left and right ends of the outer surface of the bidirectional threaded rod are respectively threadedly connected with square sliders that are slidably connected to the detection seat, the front ends of the square sliders are respectively installed with U-shaped clamping seats, and the inner sides of the two U-shaped clamping seats are respectively fixed with clamping pads.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] When in use, by placing the concrete block on the detection seat, the clamping device can clamp and fix the concrete block, and by setting an L-shaped seat that can move forward and backward, the material receiving trough, frame, and grinding ball can be driven to move to the specified position. Even if the grinding ball touches the front end surface of the concrete block, the corresponding material receiving trough will move to the lower end position of the concrete block. When the active bevel gear rotates, it can drive the grinding ball to rotate. When the grinding ball rotates, the wear resistance of the front end surface of the concrete block can be detected, and the sand and gravel that fall off during grinding will fall into the material receiving trough under the action of gravity. The material receiving trough can collect the fallen sand and gravel, so as to facilitate the calculation of the amount of sand falling. When rotating, the grinding ball will move back and forth up and down and left and right, so that the grinding ball can perform a comprehensive scanning grinding on the front end surface of the concrete block, replacing the traditional circular movement grinding of the concrete block, preventing the edges and corners of the concrete block from colliding with the grinding ball, and improving the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a first axonometric diagram of a wear-resistant testing device for building materials used in construction projects according to the present invention.

[0018] Figure 2 This is a second axonometric view of a wear-resistant testing device for building materials used in construction projects according to the present invention.

[0019] Figure 3 The present invention is a schematic diagram of the installation of a detection base of a building material wear-resistant detection device for construction engineering.

[0020] Figure 4 The present invention is a schematic diagram of the installation of a square slider of a building material wear-resistant testing device for construction engineering.

[0021] Figure 5 The present invention is a schematic diagram of the installation of a material receiving trough of a wear-resistant testing device for building materials used in construction engineering.

[0022] Figure 6 The present invention is a schematic diagram of the installation of an L-shaped seat of a building material wear-resistant testing device for construction engineering.

[0023] Figure 7 The present invention is a schematic diagram of the installation of a four-claw frame of a building material wear-resistant testing device for construction engineering.

[0024] Figure 8 The present invention is a schematic diagram of the frame installation of a building material wear resistance detection device for construction engineering.

[0025] Fig. 9 The present invention is a schematic diagram of the installation of a drive box of a building material wear-resistant detection device for construction engineering.

[0026] Fig.10The present invention is a schematic diagram of the installation of the active bevel gear of the building material wear-resistant testing equipment for construction engineering.

[0027] Fig.11 The present invention is a cross-sectional view of a driving box of a building material wear-resistant detection device for construction engineering.

[0028] Fig.12 The present invention is a schematic diagram of the installation of a movable pin of a wear-resistant testing device for building materials used in construction engineering.

[0029] Fig.13 The present invention is a schematic diagram of the installation of a pry bar of a building material wear-resistant testing device for construction engineering.

[0030] Numbers in the figure: 1-bottom plate, 2-detection seat, 3-first handle, 4-bidirectional threaded rod, 5-square slider, 6-U-shaped clamp seat, 7-clamp pad, 8-second handle, 9-first threaded rod, 10-first threaded cylinder, 11-L-shaped seat, 12-cage, 13-material receiving groove, 14-material receiving port, 15-four-claw frame, 16-long guide rod, 17-first spring, 18-anti-slip pad, 19-ear plate, 20-frame, 21-cross frame, 22-second threaded rod, 23-telescopic rod, 24-long pin rod, 25-first motor, 26-driving bevel gear, 27-first driven bevel gear, 28-second threaded cylinder, 29-second driven bevel gear, 30-disc, 31-bearing plate, 32-first sliding pin, 33-pry bar, 34-short keyway, 35-long keyway, 36-long cam, 37-live pin, 38-sleeve, 39-bevel groove, 40-grinding ball, 41-driving box, 42-small slider, 43-concrete block. DETAILED DESCRIPTION

[0031] The following are specific embodiments of the present invention, and the technical solutions of the present invention are further described in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments.

[0032] like Figure 1-Figure 13 As shown, the present invention provides a wear-resistant testing device for building materials for construction engineering, comprising a base plate 1, a testing seat 2 is provided at the upper end of the base plate 1, a concrete block 43 is placed on the testing seat 2, and a clamping device for fixing the concrete block 43 is also provided on the testing seat 2; an L-shaped seat 11 that can move forward and backward is also provided at the upper end of the base plate 1, a plurality of material receiving troughs 13 are placed at the bottom of the L-shaped seat 11, a frame 20 is also installed on the L-shaped seat 11, a rotatable active bevel gear 26 is installed on the frame 20, a grinding ball 40 is installed at the front end of the active bevel gear 26, and when the active bevel gear 26 rotates, a structure in which the grinding ball 40 rotates and moves back and forth up and down and left and right.

[0033] like Figure 1-Figure 10As shown, the bottom plate 1 is used to support and fix the entire device. The detection seat 2 is provided to limit the support of the clamping device, the concrete block 43, etc. By placing the concrete block 43 with detection on the detection seat 2, the concrete block 43 can be clamped and fixed by the provided clamping device. By providing an L-shaped seat 11 that can move back and forth, the material receiving trough 13, the frame 20, and the grinding ball 40 can be driven to move to the specified position. Even if the grinding ball 40 contacts the front end surface of the concrete block 43, the corresponding material receiving trough 13 will move to the lower end position of the concrete block 43. When the active bevel gear 26 rotates, it can The grinding ball 40 is driven to rotate, and the wear resistance of the front end surface of the concrete block 43 can be detected when the grinding ball 40 rotates. The sand and gravel that fall off during grinding will fall into the receiving trough 13 under the action of gravity. The receiving trough 13 can collect the fallen sand and gravel in a centralized manner, so as to facilitate the calculation of the amount of sand falling. The grinding ball 40 will move back and forth up and down and left and right while rotating, so that the grinding ball 40 can perform a comprehensive scanning grinding on the front end surface of the concrete block 43, replacing the traditional circular movement grinding of the concrete block 43, preventing the edges and corners of the concrete block 43 from colliding with the grinding ball 40, and improving the detection accuracy.

[0034] The inner wall of the frame 20 is slidably connected to a cross frame 21, and a driving box 41 is slidably connected to the cross frame 21. The rear end surface of the driving box 41 is fixedly connected to the first motor 25, and the driving bevel gear 26 is fixedly connected to the output end of the first motor 25. The grinding ball 40 is installed on the driving box 41. The lower end of the driving bevel gear 26 is meshed with a first driven bevel gear 27. The inner wall of the first driven bevel gear 27 is fixedly connected to a second threaded cylinder 28, and the inner wall of the second threaded cylinder 28 is threadedly connected to a second threaded rod 22 fixed to the cross frame 21.

[0035] like Figure 7-10 As shown, the cross frame 21 can be slidably connected to the inner wall of the frame 20 up and down, and the drive box 41 can be slidably connected to the upper end surface of the cross frame 21 left and right. The limit drive box 41 and the grinding ball 40 can only move up and down or left and right; the first motor 25 can drive the active bevel gear 26 to rotate forward and reverse. The function of the first motor 25 is to provide a rotating force for the active bevel gear 26. The motor is a prior art and will not be described in detail; the left and right ends of the outer surface of the second threaded cylinder 28 are respectively rotatably connected to the bearing seats, and the bearing seats are respectively fixed to the drive box 41, and the limit The second threaded cylinder 28 and the first driven bevel gear 27 can only rotate at the front end of the driving box 41; when the first motor 25 is started, it can drive the active bevel gear 26 to rotate. When the active bevel gear 26 rotates, it will drive the second threaded cylinder 28 to rotate through the engagement with the first driven bevel gear 27. When the second threaded cylinder 28 rotates, it will cause the second threaded cylinder 28, the driving box 41, and the grinding ball 40 to move left or right through the threaded connection with the second threaded rod 22, thereby causing the grinding ball 40 to move back and forth left and right.

[0036] The upper end of the active bevel gear 26 is meshed with a second driven bevel gear 29, and the left and right ends of the second driven bevel gear 29 are respectively coaxially fixed with discs 30, and the outer end surfaces of the two discs 30 are respectively fixed with first sliding pins 32 at non-center positions, and the upper side of the rear end surface of the drive box 41 is fixed with two bearing plates 31, and the outer ends of the two bearing plates 31 are respectively rotatably connected with pry bars 33, and the inner walls of the rear ends of the pry bars 33 are respectively provided with short key grooves 34 that match the first sliding pin 32, and the front end of the frame 20 is provided with a long pin rod 24, and the front ends of the pry bars 33 are respectively provided with long key grooves 35 that match the long pin rod 24.

[0037] like Figure 8 , Fig.10 , Fig.13 As shown, a rotating shaft is fixedly connected at the center of the second driven bevel gear 29 and the disc 30, and the rotating shaft is rotatably connected to the inner wall of the bearing plate 31, limiting the second driven bevel gear 29 and the disc 30 to be able to rotate; the disc 30, the first sliding pin 32, the pry bar 33, the long key slot 35, the short key slot 34, and the long pin rod 24 are installed and shaped as shown in FIG. Fig.13 As shown, the inner walls of the two pry bars 33 are fixed with a rotating shaft, which is rotatably connected to the bearing plate 31, which is equivalent to the pry bars 33 being rotatably connected to the bearing plate 31; when the active bevel gear 26 rotates, it can drive the second driven bevel gear 29 to rotate, and when the second driven bevel gear 29 rotates, the two discs 30 will rotate synchronously, and when the disc 30 rotates, the first sliding pin 32 will move in a circular motion, and when the first sliding pin 32 moves in a circular motion, it will mesh with the short key groove 34, which will cause the pry bars 33 to swing up and down, and the pry bars 33 will be rotated by the pry bars 33. When the height of the long pin rod 24 is fixed, when the pry bar 33 swings up and down, the long key groove 35 engages with the long pin rod 24, which causes the pry bar 33, the drive box 41, the grinding ball 40, the cross frame 21, etc. to move back and forth synchronously up and down, thereby causing the grinding ball 40 to move back and forth up and down, and when the drive box 41, the pry bar 33, etc. move left and right, the long key groove 35 can slide relative to the long pin rod 24, that is, the pry bar 33 can move left and right on the outer surface of the long pin rod 24, and the two do not affect each other.

[0038] Telescopic rods 23 are fixedly connected to the left and right sides of the rear end surface of the frame 20 , respectively, and long pin rods 24 are fixedly connected to the telescopic ends of the two telescopic rods 23 .

[0039] like Figure 8As shown, the telescopic rod 23 can be telescopic forward and backward, that is, it drives the long pin rod 24 to move forward and backward. The telescopic rod 23 can be an electric rod and has a self-locking function. When it is not working, it can lock the position of the long pin rod 24; when the two telescopic rods 23 telescope forward or backward, they can drive the long pin rod 24 to move. When the long pin rod 24 moves, it will change the initial meshing position with the long key groove 35. At this time, when the disc 30 rotates, the drive box 41 and the grinding ball 40 can be reciprocated up and down to form a larger or smaller, that is, driving the long pin rod 24 to move can adjust the size of the reciprocating stroke of the grinding ball 40, and it can be adaptively adjusted according to the width of the concrete block 43, and it can be adjusted in real time without stopping the machine; by controlling the number of turns of the first motor 25 to drive the second threaded cylinder 28 forward and reverse, the size of the reciprocating left and right movement of the grinding ball 40 can be adjusted, and it can be adjusted according to the length of the concrete block 43.

[0040] A long cam 36 is coaxially fixed to the rear end of the active bevel gear 26, a small slider 42 is slidably connected to the inner wall of the lower end of the drive box 41, a movable pin 37 matching the long cam 36 is fixed to the inner wall of the small slider 42, a sleeve 38 is rotatably connected to the inner wall of the drive box 41, the grinding ball 40 is fixed to the rear end surface of the sleeve 38, and an inclined groove 39 matching the movable pin 37 is provided on the outer surface of the sleeve 38.

[0041] like Figure 11-Figure 12 As shown, the sleeve 38 is sleeved on the outer surface of the long cam 36, that is, the long cam 36 is rotatably connected to the inner wall of the sleeve 38; the small slider 42 can be slidably connected to the inner wall of the drive box 41 forward and backward, and the movable pin 37 can only move forward and backward under the limit of the small slider 42. When the long cam 36 rotates, it can drive the movable pin 37 to move back and forth through the engagement with the movable pin 37. When the movable pin 37 moves back and forth, the engagement between the movable pin 37 and the inclined groove 39 can drive the sleeve 38 to rotate back and forth, that is, drive the grinding ball 40 to rotate back and forth. When the grinding ball 40 rotates back and forth and contacts the front end surface of the concrete, the wear-resistant detection effect can be improved. The conventional grinding ball 40 rotates in one direction and the grinding surface is easily uneven. The grinding ball 40 can evenly grind the front end surface of the concrete by rotating forward and reverse, because the action of the abrasive in two directions can balance part of the wear and reduce the uneven wear caused by unidirectional rotation, that is, it helps to reduce the grinding marks or directional scratches caused by unidirectional rotation.

[0042] The L-shaped seat 11 is slidably connected to the upper end surface of the base plate 1, a first threaded tube 10 is fixedly connected to the inner wall of the L-shaped seat 11, a first threaded rod 9 that can rotate is threadedly connected to the inner wall of the first threaded tube 10, a plurality of slots 12 are opened on the front side of the upper end surface of the L-shaped seat 11, and the receiving grooves 13 are respectively placed on the inner walls of the corresponding slots 12.

[0043] like Figure 5-Figure 6As shown, the front and rear ends of the outer surface of the first threaded rod 9 are rotatably connected with bearing seats, and the bottom ends of the bearing seats are respectively fixed to the upper surface of the bottom plate 1, limiting the first threaded rod 9 to be able to rotate. The front end of the outer surface of the first threaded rod 9 is also fixed to a second handle 8. The function of the second handle 8 is to facilitate driving the first threaded rod 9 to rotate. A motor can also be set to drive the first threaded rod 9 to rotate, which can be set according to needs; the L-shaped seat 11 can be slidably connected to the upper end surface of the bottom plate 1 front and back, and when the first threaded rod 9 rotates, it can drive the first threaded rod 9 to rotate by engaging with the first threaded cylinder 10. The first threaded barrel 10 and the L-shaped seat 11 move forward or backward, which can enable the frame 20, the grinding ball 40, and the material receiving groove 13 to reach the specified position, and the first threaded barrel 10 and the first threaded rod 9 have a self-locking function under the threaded connection, that is, when the first threaded rod 9 does not rotate, the corresponding L-shaped seat 11, the material receiving groove 13 and the like are in a fixed state, so that the device can be tested stably; the material receiving groove 13 and the card slot 12 are interference fit, and the material receiving groove 13 can be detachably installed on the inner wall of the card slot 12, which is convenient for removal and replacement or measurement of sand loss.

[0044] A four-claw frame 15 is fixedly connected to the upper end of the L-shaped seat 11, and four long guide rods 16 are fixedly connected to the rear end surface of the four-claw frame 15. Ear plates 19 are fixedly connected to the upper and lower sides of the left and right end surfaces of the frame 20. The long guide rods 16 are slidably connected to the corresponding inner walls of the ear plates 19. First springs 17 that match the ear plates 19 are also respectively sleeved on the outer surfaces of the long guide rods 16. Anti-slip pads 18 are respectively fixedly connected to the rear end surfaces of the long guide rods 16. A material receiving port 14 that matches the material receiving trough 13 is fixedly connected to the front end surface of the detection seat 2.

[0045] like Figure 7 As shown, the frame 20 and the ear plate 19 can slide forward and backward on the outer surface of the long guide rod 16, that is, the frame 20 and the grinding ball 40 can only move forward and backward on the four-claw frame 15 under the limit of the long guide rod 16 and the ear plate 19, and the first spring 17 always has a backward thrust on the anti-slip pad 18, so that the frame 20 is at the rearmost position of the long guide rod 16. The function of the anti-slip pad 18 is to prevent the ear plate 19 from being separated from the long guide rod 16; Figure 3 or Figure 5As shown, the upper cross-section of the receiving port 14 is larger than the lower cross-section, which can better receive the sand and gravel that fall after grinding and concentrate them into the receiving trough 13; when the L-shaped seat 11 moves backward, it can drive the four-claw frame 15, the long guide rod 16, the first spring 17, the frame 20, the grinding ball 40, etc. to move backward. When the grinding ball 40 moves backward to contact the front end surface of the concrete block 43, the grinding ball 40 can work to perform a grinding test on the front end surface of the concrete. When the test intensity needs to be adjusted, by continuing to drive the L-shaped seat 11, the four-claw frame 1 5. The long guide rod 16 moves backward, which can compress the first spring 17. The rear end of the first spring 17 will squeeze the ear plate 19, the frame 20, and the grinding ball 40, so that the grinding ball 40 has a backward driving force when grinding. It can perform multi-stage graded testing and test the wear resistance of the concrete block 43 when subjected to different degrees of pressure, so as to make the test data more comprehensive. By setting up multiple receiving troughs 13, when performing multi-stage graded testing on the concrete block 43, the fallen sand and gravel can be received respectively, that is, the amount of fallen sand and gravel can be collected under the corresponding level test.

[0046] The clamping device includes a rotatable bidirectional threaded rod 4, and the left and right ends of the outer surface of the bidirectional threaded rod 4 are respectively threadedly connected with square sliders 5 that are slidably connected to the detection seat 2. The front ends of the square sliders 5 are respectively installed with U-shaped clamp seats 6, and the inner sides of the two U-shaped clamp seats 6 are respectively fixed with clamping pads 7.

[0047] like Figure 3-Figure 4 As shown, the square slider 5 can be slidably connected to the upper end surface of the detection seat 2, and the left and right ends of the outer surface of the two-way threaded rod 4 are respectively rotatably connected with bearing seats, and the bottom ends of the bearing seats are respectively fixed to the detection seat 2, and the two-way threaded rod 4 can only be rotated. The left and right end surfaces of the two-way threaded rod 4 are respectively fixed with the first handle 3. The function of the first handle 3 is to facilitate the driving of the two-way threaded rod 4 to rotate. The two-way threaded rod 4 can also be started to rotate by a motor, and specific settings can be made according to needs; two sections of threads with the same pitch but different rotation directions are provided on the outer surface of the two-way threaded rod 4. When the two-way threaded rod 4 rotates, the square slider 5 can move inward or outward. When the threaded rod 4 rotates, through the threaded connection with the square slider 5, it can drive the square slider 5, the U-shaped clamp seat 6, and the clamping pad 7 to move inward or outward synchronously. When the clamping pad 7 moves inward and contacts the concrete block 43, the concrete block 43 can be clamped and fixed. The two-way threaded rod 4 and the square slider 5 are threadedly connected and have a self-locking function. That is, when the two-way threaded rod 4 does not rotate, the corresponding U-shaped clamp seat 6 is in a fixed position, and the concrete block 43 can be clamped and fixed. When the two-way threaded rod 4 is driven to rotate in the opposite direction, the square slider 5 and the clamping pad 7 can move outward, that is, they no longer clamp the limiting concrete block 43.

[0048] like Figure 3-Figure 4As shown, the U-shaped clamp seat 6 can be fixed on the square slider 5 or can be hinged on the square slider 5. When the U-shaped clamp seat 6 is fixed on the square slider 5, when the square slider 5 moves inward or outward, the U-shaped clamp seat 6 and the clamp pad 7 can be stably driven to move inward or outward, so that the clamp pad 7 can clamp and fix the concrete block 43; when the U-shaped clamp seat 6 is hinged on the square slider 5, it can deflect left and right, so that the U-shaped clamp seat 6 and the clamp pad 7 can adapt to the uneven surface when clamping the concrete block 43. When the left and right end surfaces of the concrete are uneven, When the square slider 5, the U-shaped clamp seat 6 and the clamping pad 7 move inward, the clamping pad 7 will be driven to contact the concrete block 43. When one of the clamping pads 7 contacts the concrete block 43, the square slider 5 and the U-shaped clamp seat 6 continue to move inward, which will cause the U-shaped clamp seat 6 to deflect. The U-shaped clamp seat 6 deflects until the two clamping pads 7 contact the side end surfaces of the concrete block 43 respectively, that is, the special-shaped concrete block 43 is clamped and fixed; the U-shaped clamp seat 6 is hinged on the square slider 5, so that the special-shaped concrete block 43 can be stably clamped and fixed. The setting is selected according to needs and will not be repeated here.

[0049] When the present invention is in use, by placing the concrete block 43 on the detection seat 2, the clamping device can clamp and fix the concrete block 43, and by setting the L-shaped seat 11 that can move forward and backward, the material receiving trough 13, the frame 20, and the grinding ball 40 can be driven to move to the specified position. Even if the grinding ball 40 contacts the front end surface of the concrete block 43, the corresponding material receiving trough 13 will move to the lower end position of the concrete block 43. When the active bevel gear 26 rotates, the grinding ball 40 can be driven to rotate, and when the grinding ball 40 rotates, the concrete block 43 can be polished. The front end surface of the soil block 43 is tested for wear resistance, and the sand and gravel that fall off during grinding will fall into the receiving trough 13 under the action of gravity. The receiving trough 13 can collect the fallen sand and gravel in a centralized manner, thereby facilitating the calculation of the amount of sand falling. The grinding ball 40 will move back and forth up and down and left and right while rotating, so that the grinding ball 40 can perform a comprehensive scanning grinding on the front end surface of the concrete block 43, replacing the traditional circular movement grinding of the concrete block 43, preventing the edges and corners of the concrete block 43 from colliding with the grinding ball 40, and improving the detection accuracy.

[0050] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A wear-resistant testing device for building materials used in construction engineering, comprising a base plate (1), characterized in that: The upper end of the base plate (1) is provided with a detection seat (2), a concrete block (43) is placed on the detection seat (2), and a clamping device for fixing the concrete block (43) is also provided on the detection seat (2); the upper end of the base plate (1) is also provided with an L-shaped seat (11) that can move forward and backward, a plurality of material receiving troughs (13) are placed at the bottom of the L-shaped seat (11), a frame (20) is also installed on the L-shaped seat (11), a rotatable active bevel gear (26) is installed on the frame (20), a grinding ball (40) is installed at the front end of the active bevel gear (26), and when the active bevel gear (26) rotates, a structure is formed in which the grinding ball (40) rotates and moves back and forth up and down and left and right. The inner wall of the frame (20) is slidably connected to a cross frame (21); the lower end of the driving bevel gear (26) is meshed with a first driven bevel gear (27); the inner wall of the first driven bevel gear (27) is fixedly connected to a second threaded cylinder (28); the inner wall of the second threaded cylinder (28) is threadedly connected to a second threaded rod (22) fixedly connected to the cross frame (21); The upper end of the driving bevel gear (26) is meshed with a second driven bevel gear (29), and the left and right ends of the second driven bevel gear (29) are respectively coaxially fixed with disks (30), and the outer ends of the two disks (30) are respectively provided with pry bars (33), and one side of the frame (20) is provided with a long pin rod (24) that matches the pry bar (33); A driving box (41) is slidably connected to the cross frame (21), a first motor (25) is fixedly connected to the rear end surface of the driving box (41), the driving bevel gear (26) is fixedly connected to the output end of the first motor (25), and the grinding ball (40) is mounted on the driving box (41); The outer end surface of the disk (30) is fixedly connected to a first sliding pin (32) at a non-center portion thereof; the upper side of the rear end surface of the drive box (41) is fixedly connected to two bearing plates (31); the pry bars (33) are rotatably connected to the two bearing plates (31); the inner wall of the rear end of the pry bars (33) is respectively provided with a short key groove (34) matching with the first sliding pin (32); the front end of the frame (20) is provided with a long pin rod (24); the front end of the pry bars (33) is respectively provided with a long key groove (35) matching with the long pin rod (24).

2. A wear-resistant testing device for building materials for construction engineering as claimed in claim 1, characterized in that: Telescopic rods (23) are fixedly connected to the left and right sides of the rear end surface of the frame (20), respectively, and a long pin rod (24) is fixedly connected to the telescopic ends of the two telescopic rods (23).

3. The wear-resistant testing equipment for building materials used in construction engineering as claimed in claim 1, characterized in that: A long cam (36) is coaxially fixedly connected to the rear end of the active bevel gear (26); a small slider (42) is slidably connected to the inner wall of the lower end of the driving box (41); a movable pin (37) matching with the long cam (36) is fixedly connected to the inner wall of the small slider (42); a sleeve (38) is rotatably connected to the inner wall of the driving box (41); the grinding ball (40) is fixedly connected to the rear end surface of the sleeve (38); and an inclined groove (39) matching with the movable pin (37) is formed on the outer surface of the sleeve (38).

4. The wear-resistant testing equipment for building materials used in construction engineering as claimed in claim 1, characterized in that: The L-shaped seat (11) is slidably connected to the upper surface of the bottom plate (1); a first threaded cylinder (10) is fixedly connected to the inner wall of the L-shaped seat (11); a first threaded rod (9) capable of rotating is threadedly connected to the inner wall of the first threaded cylinder (10); a plurality of slots (12) are provided on the front side of the upper surface of the L-shaped seat (11); and the material receiving slots (13) are respectively placed on the inner walls of the corresponding slots (12).

5. The wear-resistant testing equipment for building materials used in construction engineering as claimed in claim 1, characterized in that: A four-claw frame (15) is fixedly connected to the upper end of the L-shaped seat (11), and four long guide rods (16) are fixedly connected to the rear end surface of the four-claw frame (15). Ear plates (19) are fixedly connected to the upper and lower sides of the left and right end surfaces of the frame (20). The long guide rods (16) are slidably connected to the inner walls of the corresponding ear plates (19). First springs (17) matching with the ear plates (19) are respectively sleeved on the outer surfaces of the long guide rods (16). Anti-slip pads (18) are respectively fixedly connected to the rear end surfaces of the long guide rods (16). A material receiving port (14) matching with the material receiving trough (13) is fixedly connected to the front end surface of the detection seat (2).

6. The wear-resistant testing equipment for building materials used in construction engineering as claimed in claim 1, characterized in that: The clamping device comprises a rotatable bidirectional threaded rod (4), the left and right ends of the outer surface of the bidirectional threaded rod (4) are respectively threadedly connected to square sliders (5) which are slidably connected to the detection seat (2), the front ends of the square sliders (5) are respectively mounted with U-shaped clamping seats (6), and the inner sides of the two U-shaped clamping seats (6) are respectively fixed with clamping pads (7).

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