CN211825462U

CN211825462U - Concrete compression testing machine

Info

Publication number: CN211825462U
Application number: CN202020070016.0U
Authority: CN
Inventors: 成细红
Original assignee: Xi'an Baiguyuan Concrete Co ltd
Current assignee: Xi'an Baiguyuan Concrete Co ltd
Priority date: 2020-01-13
Filing date: 2020-01-13
Publication date: 2020-10-30
Anticipated expiration: 2030-01-13

Abstract

The utility model discloses a concrete compression testing machine relates to concrete detection equipment technical field. The technical key points are as follows: the automatic lifting device comprises a workbench, two support columns are arranged on the workbench along the vertical direction, a cross beam is arranged between the support columns, a stress plate is arranged below the cross beam, a pressure sensor used for detecting the pressure applied to the stress plate is arranged on the stress plate, a first cylinder fixedly connected with the cross beam drives the stress plate to lift is arranged on the cross beam, a bearing plate is arranged on the workbench, a support frame is arranged on the workbench, a brush roller is connected onto the support frame, the brush roller is located between the bearing plate and the stress plate, the axis of the brush roller is parallel to the axis of the cross beam, a driving assembly used for driving the brush roller to move horizontally is arranged on the support frame, and a lifting assembly used for driving the support frame to lift is arranged on the support frame. The utility model has the advantages of detect the precision height.

Description

Concrete compression testing machine

Technical Field

The utility model belongs to the technical field of concrete detection equipment technique and specifically relates to a concrete compression testing machine is related to.

Background

The concrete compression testing machine is mainly used for the compression strength test of concrete, has compact structure and simple operation, is used for detecting the compression strength of concrete in cement yards, building construction units, related professional colleges and scientific research units, and can also be used for detecting the compression strength of other non-metallic materials.

The utility model discloses a chinese utility model patent that bulletin number is CN206583723U discloses a compressive testing machine is rolled over in concrete, and its technical essential is: the device comprises a workbench, at least two support rods arranged on the workbench, a cross beam arranged between the two support rods and connected with the two support rods, a stress plate connected with the lower end of the cross beam, a pressure detection device arranged on the stress plate and used for detecting the pressure applied on the stress plate, a pressure plate arranged below the stress plate, and a driving device arranged in the workbench and used for driving the pressure plate to move towards the stress plate, wherein the pressure plate consists of two layers and comprises a bearing plate close to the stress plate and a driving plate connected with the driving device; a plurality of positioning blocks are arranged below the bearing plate, and the compression strength of the concrete is detected.

The above prior art solution has the following drawbacks: when being driven by drive arrangement to the pressure plate, pressurize by the concrete test block of atress board on to the atress board, until the concrete test block crushing, record its resistance to compression value, but when exerting pressure to its concrete block, can contain some pieces after the concrete test block crushing, the concrete piece can adhere on pressure plate and atress board, hardly clear up its surface concrete piece, can influence experimental data value when detecting concrete compressive strength once more, concrete compressive strength detects the precision low.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a concrete compression testing machine, it has the advantage that detects the precision height.

The above object of the present invention can be achieved by the following technical solutions:

the utility model provides a concrete compression testing machine, includes the workstation, be provided with two spinal branch daggers, two along vertical direction on the workstation be equipped with the crossbeam between the support column, the crossbeam below is provided with the atress board, be equipped with the pressure sensor who is used for detecting the pressure that the atress board receives on the atress board, fixedly connected with drives the first cylinder that the atress board goes up and down on the crossbeam, be equipped with the bearing plate on the workstation, be equipped with the carriage on the workstation, be connected with the brush roller on the carriage, the brush roller is located between bearing plate and the atress board, the axis of brush roller is parallel with the axis of crossbeam, be equipped with the drive assembly of drive brush roller horizontal migration on the carriage, be equipped with the lifting unit that the drive carriage goes up and down on the carriage.

By adopting the technical scheme, when the concrete test block is subjected to pressure detection, the first air cylinder arranged on the cross beam drives the stress plate connected with the cross beam to descend, the pressure is continuously applied to the concrete test block placed on the pressure bearing plate until the concrete test block is crushed, the pressure value when the concrete test block is crushed is recorded, as the fragments of the concrete test block can be adhered to the pressure plate and the pressure bearing plate after the concrete test block is crushed and are difficult to clean, and the detection data can be influenced when the concrete test block is detected again, the driving assembly drives the arranged brush roller to horizontally move, the brush roller is contacted with the pressure bearing plate or the stress plate to clean the concrete fragments adhered to the pressure bearing plate, and when the concrete fragments on the stress plate are cleaned, the arranged lifting assembly lifts the supporting frame to clean the concrete fragments adhered to the surface of the supporting frame, thereby facilitating the detection of the concrete test block again, the detection precision of the concrete test block is improved.

The present invention may be further configured in a preferred embodiment as: the supporting frame is located the both ends of brush roller and has seted up the spout, the length direction of spout is perpendicular with the axis direction of brush roller, sliding connection has the slider in the spout, the both ends and two slider fixed connection of brush roller, drive assembly includes linear electric motor, linear electric motor includes slide bar, organism, supporting seat, the upper end fixed connection of supporting seat and supporting frame, the length direction of slide bar is parallel with the length direction of spout, linear electric motor's organism and the lateral wall fixed connection of slider.

Through adopting above-mentioned technical scheme, when the brush roller cleared up the concrete piece that atress board and bearing plate surface adhered, linear electric motor's organism drove rather than fixed connection's slider and removes, and the slider slides in the spout and drives rather than fixed connection's brush roller and clear up the concrete piece that atress board and bearing plate surface adhered, when carrying out pressure detection to the concrete test block, detects the precision height.

The present invention may be further configured in a preferred embodiment as: the spout both ends are provided with the stopper, the degree of depth that highly is higher than the spout of stopper.

By adopting the technical scheme, when the sliding block slides in the sliding groove and slides to the two ends of the sliding groove, the sliding block can be separated from the sliding groove, the motor connected with the sliding block is damaged, and the brush roller is damaged, so that the position of the sliding block is limited by the arranged limiting block, and the sliding block is prevented from being separated from the sliding groove to damage the motor and the brush roller.

The present invention may be further configured in a preferred embodiment as: the lifting assembly comprises two second cylinders, the cylinder bodies of the two second cylinders are fixedly connected with the workbench, and the piston rods of the two second cylinders are arranged in the vertical direction and are fixedly connected with the supporting frame.

Through adopting above-mentioned technical scheme, when the concrete that adheres on needs to the atress board is cleared up, drive the carriage by cylinder piston rod and rise, the brush roller that is equipped with clears up the atress board, when the concrete piece that adheres on needs clearance bearing plate, by the decline of second cylinder piston rod drive carriage, clear up the concrete piece that adheres on the bearing plate surface, examine time measuring to the concrete test block once more, atress board and bearing plate surface cleaning, can not influence the detection to the concrete test block, it is high to detect the precision.

The present invention may be further configured in a preferred embodiment as: the brush roller comprises a shaft lever and a brush barrel rotatably connected with the shaft lever, two ends of the shaft lever of the brush roller are connected with supporting rods, two scraper knives are fixedly connected to two sides of the brush roller on the supporting rods, and one surfaces, far away from the brush roller, of the scraper knives are arranged in an arc shape.

Through adopting above-mentioned technical scheme, when clearing up the concrete piece that adheres on atress board and the bearing plate, at first shoveling the sword with the strong concrete piece of atress board and bearing plate surface adhesion by being equipped with shovels the sword and shovels, then the brush roller clears up the surface of atress board and bearing plate again, and to the more thorough of clearing up the concrete piece that adheres on atress board and the bearing plate, to concrete test block pressure detection time measuring, it is higher to detect the precision.

The present invention may be further configured in a preferred embodiment as: and a blocking frame which can stretch out and draw back along the vertical direction is connected between the supporting frame and the workbench.

Through adopting above-mentioned technical scheme, to concrete test block pressure detection time measuring, need read the resistance to compression value again after crushing its concrete test block, because concrete piece after the breakage can splash everywhere, cause certain pollution to the environment, the concrete test block crushing of high strength splashes and still can cause certain harm to personal safety, consequently, the fender frame that is equipped with makes when the concrete test block crushing on the one hand, can not take place to splash, on the other hand, when the brush roller cleared up the concrete bits on atress board and the bearing plate, keep off the concrete piece that the frame will be brushed down and keep off on the workstation in carriage place region, the convenience is cleared up the concrete bits.

The present invention may be further configured in a preferred embodiment as: keep off the frame including inserting frame, cover frame, insert the frame and be located the cover frame and rather than sliding connection, insert the top and the carriage fixed connection of frame, the lower extreme and the workstation butt of cover frame.

Through adopting above-mentioned technical scheme, after to the concrete briquetting crushing, drive first cylinder rises the atress board, need clear up the concrete piece that adheres on the atress board when rising, it rises by second cylinder drive carriage, the piece that the brush roller adhered on to the atress board is cleared up, the piece that the brush roller brushed can drop, drop outside the workstation, cause the pollution to the environment, frame and cover frame insert that are equipped with, the concrete bits that the brush roller brushed all the time can drop to the workstation in carriage place region in the carriage rises or decline in-process, conveniently clear up the concrete bits.

The present invention may be further configured in a preferred embodiment as: the utility model discloses a portable automatic material conveying device, including workstation, pressure bearing plate, workstation, fixed bolster, guide bar, discharge chamber, discharge gate, guide bar, bell and spigot joint, the workstation is located the below of pressure bearing plate and has seted up the groove of accomodating identical with the pressure bearing plate, the pressure bearing plate below is provided with the hydraulic cylinder that drives the pressure bearing plate lift, hydraulic cylinder's cylinder body and the bottom surface fixed connection who accomodates the groove, hydraulic cylinder's piston rod set up along vertical direction and with pressure bearing plate lower fixed surface connection, the last sliding surface connection of workstation has the scraper blade rather than the laminating, the scraper blade both ends are connected with the guide bar along its direction of motion, the guide bar passes the cover frame and rather than sliding connection, the discharge chamber has been seted up to one side of workstation far away from the scraper blade, the workstation lateral wall is equipped with the discharge gate that communicates with discharge chamber.

Through adopting above-mentioned technical scheme, exert the force with its crushing back to the concrete test block of placing on the bearing plate, the concrete piece that adheres on bearing plate and the atress board is cleared up by the brush roller, after dropping to the workstation, drive the bearing plate by hydraulic cylinder and descend to flush with the workstation, the scraper blade through the laminating of workstation upper surface is driven by the guide bar and is cleared up the garrulous bits of concrete on the workstation, the scraper blade pushes away the concrete piece to ejection of compact intracavity, open the closed door that the discharge gate department that workstation and ejection of compact chamber communicate set up, clear up the garrulous bits of concrete on the workstation, workstation after the clearance can not influence pressure detection, the convenience is to the pressure detection of concrete test block.

To sum up, the utility model discloses a following at least one useful technological effect:

1. by arranging the brush roller, the linear motor, the sliding grooves and the sliding blocks, the linear motor drives the sliding blocks to move in the sliding grooves, and the brush roller fixedly connected between the sliding blocks cleans the stress plate and the fragments adhered to the bearing plate, so that the pressure of the concrete test block can be conveniently detected, and the detection precision is improved;

2. through the arrangement of the scraper knife, concrete scraps with strong adhesion on the stress plate and the bearing plate are cleaned, the cleaning of the scraps by the brush roller is facilitated, the cleaning of the adhered concrete scraps is more thorough, and the detection precision is higher;

3. by arranging the second air cylinder, the cleaning of concrete fragments adhered to the bearing plate and the stress plate is facilitated, the pressure detection of the concrete test block cannot be influenced by the bearing plate and the stress plate, and the detection precision is improved;

4. through setting up the cover frame, inserting the frame, when the brush roller cleared up the concrete piece on stress plate and the bearing plate, the cover frame with insert the frame and mutually support, prevented that the garrulous bits of concrete from dropping to the place outside the workstation, cause certain pollution to the environment, made things convenient for the clearance of concrete piece.

Drawings

FIG. 1 is a schematic view of the overall structure of a concrete pressure tester;

FIG. 2 is an enlarged schematic view of portion A of FIG. 1;

FIG. 3 is an enlarged schematic view of portion B of FIG. 1;

FIG. 4 is a cross-sectional view of a concrete compression tester taken along a vertical plane perpendicular to the axis of the brush roller;

fig. 5 is a schematic view of the overall structure of a concrete pressure tester from a second viewing angle.

Reference numerals: 1. a work table; 2. a support pillar; 3. a cross beam; 4. a stress plate; 5. a pressure sensor; 6. a first cylinder; 7. a pressure bearing plate; 8. a support frame; 9. a brush roller; 91. a shaft lever; 92. a brush barrel; 10. a chute; 11. a slider; 12. a linear motor; 121. a slide bar; 122. a body; 123. a supporting seat; 13. a limiting block; 14. a second cylinder; 15. a scraper knife; 16. a support bar; 17. a blocking frame; 171. inserting a frame; 172. sleeving a frame; 18. a receiving groove; 19. a hydraulic cylinder; 20. a squeegee; 21. a guide bar; 22. a discharge cavity; 23. a discharge port; 24. the door is closed.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, a concrete compression testing machine disclosed by the present invention comprises a rectangular work bench 1, two support columns 2 are welded on the work bench 1 along a vertical direction, a beam 3 is welded between the two support columns 2, a stress plate 4 is arranged below the beam 3, a pressure sensor 5 for detecting the pressure applied on the stress plate 4 is arranged on the stress plate 4, a first cylinder 6 for driving the stress plate 4 to ascend and descend is welded on the beam 3, the cylinder body of the first cylinder 6 is welded with the beam 3, the piston rod of the first cylinder 6 is welded with the upper surface of the pressure sensor 5 along the vertical direction, a bearing plate 7 is arranged on the work bench 1, a support frame 8 is arranged on the work bench 1, a brush roller 9 is connected on the support frame 8, the brush roller 9 comprises a shaft rod 91 and a brush cylinder 92 rotationally connected with the shaft rod 91, the brush roller 9 is arranged between the bearing plate 7 and the stress plate 4, the axis of the brush roller 9 is parallel to the axis of the beam 3, the supporting frame 8 is provided with a driving component for driving the brush roller 9 to move horizontally, and the supporting frame 8 is provided with a lifting component for driving the supporting frame 8 to lift. When the concrete test block is subjected to pressure detection, the first air cylinder 6 arranged on the cross beam 3 drives the stress plate 4 to move downwards, the concrete test block placed on the stress plate 7 is continuously pressurized until the concrete test block is crushed, the pressure value of the concrete test block during crushing is recorded, the brush roller 9 arranged under the driving of the driving assembly moves horizontally, the brush roller 9 is in contact with the stress plate 7 or the stress plate 4 to clean concrete fragments adhered to the stress plate 7, and when the concrete fragments adhered to the stress plate 4 are cleaned, the supporting frame 8 is lifted by the arranged lifting assembly to clean the concrete fragments adhered to the surface of the supporting frame, so that the concrete test block can be conveniently detected again, and the detection precision of the concrete test block is improved.

Because after the concrete test block crushing, when the garrulous bits of concrete adhere on atress board 4 and bearing plate 7, the adhesion is stronger, and brush roller 9 is difficult to its clearance, consequently, the welding of axostylus axostyle 91 both ends of brush roller has bracing piece 16, and the both sides welding that lies in brush roller 9 on the bracing piece 16 has two spillers 15, and the one side that brush roller 9 was kept away from to two spillers 15 is the arc setting. When the scraper knife 15 cleared up the concrete piece that adheres to on the atress board 4, the upper surface of scraper knife 15 shovels the piece with the laminating of atress board 4, when scraper knife 15 cleared up the concrete piece on the bearing plate 7, the lower surface of scraper knife 15 shovels the concrete piece of bearing plate 7 upper surface with the laminating of bearing plate 7, then clears up it by brush roller 9 again, and is more thorough to the piece clearance that adheres, and follow-up when examining concrete pressure, it is higher to detect the precision.

Because need the concrete test block to exert pressure and make the concrete test block broken, the concrete piece after the breakage can splash everywhere, causes certain pollution to the environment, and the concrete test block crushing of high strength splashes and still can cause certain harm to the personal safety, consequently, is connected with between support frame 8 and the workstation 1 and can follows the flexible frame 17 that keeps off of vertical direction. Keep off frame 17 and avoided the clastic splash of concrete and drop wantonly and the polluted environment, in this embodiment, keep off frame 17 including inserting frame 171, cover frame 172, insert frame 171 be located cover frame 172 and rather than sliding connection, insert the top and the support frame 8 welding of frame 171, the lower extreme of cover frame 172 passes through positioning bolt with workstation 1 and fixes cover frame 172. When the adhered concrete fragments on the stress plate 4 and the bearing plate 7 are cleaned, the second air cylinder 14 drives the supporting frame 8 to lift, the inserting frame 171 and the sleeve frame 172 of the blocking frame 17 slide relatively to block the cleaned fragments, and the concrete fragments brushed by the brush roller 9 fall in the area where the supporting frame 8 is located, so that the cleaning of the concrete fragments is facilitated.

Referring to fig. 2 and 3, chutes 10 are provided at two ends of the brush roller 9 of the supporting frame 8, a length direction of the chute 10 is perpendicular to an axis direction of the brush roller 9, sliders 11 are slidably connected in the chute 10, two ends of the brush roller 9 are welded to the two sliders 11, in this embodiment, the driving assembly includes a linear motor 12, the linear motor 12 includes a sliding rod 121, a machine body 122, a supporting seat 123, the supporting seat 123 is welded to an upper end of the supporting frame 8, the length direction of the sliding rod 121 is parallel to the length direction of the chute 10, and the machine body 122 of the linear motor 12 is fixedly connected to side walls of the sliders 11. When the brush roller 9 cleans concrete fragments adhered to the surfaces of the stress plate 4 and the bearing plate 7, the body 122 of the linear motor 12 drives the slider 11 welded with the slider to move, and the slider 11 slides in the chute 10 to drive the brush roller 9 welded with the slider to clean the concrete fragments adhered to the surfaces of the stress plate 4 and the bearing plate 7.

Because slider 11 slides in spout 10, when slider 11 slided spout 10 both ends, slider 11 can break away from spout 10, damages the motor of being connected with it and hit and damage brush roller 9, consequently, the welding of spout 10 both ends has stopper 13, and stopper 13 highly is higher than the degree of depth of spout 10, has restricted the slip of slider 11 in spout 10, has avoided slider 11 to break away from spout 10 and has damaged motor and brush roller 9.

In this embodiment, lifting unit includes two second cylinders 14, and the cylinder body and the workstation 1 welding of two second cylinders 14, the piston rod of two second cylinders 14 set up and weld with carriage 8 along vertical direction. When concrete adhered to the stress plate 4 needs to be cleaned, the supporting frame 8 is driven to ascend by the cylinder piston rod, the arranged brush roller 9 is used for cleaning the stress plate 4, when concrete fragments adhered to the bearing plate 7 need to be cleaned, the supporting frame 8 is driven to descend by the cylinder piston rod, the concrete fragments adhered to the surface of the bearing plate 7 are cleaned, the structure is simple, and the concrete fragments adhered to the stress plate 4 and the bearing plate 7 can be cleaned conveniently.

Referring to fig. 4 and 5, after cleaning the concrete fragments on the stress plate 4 and the bearing plate 7, the concrete fragments all fall on the workbench 1 in the area of the supporting frame 8, so as to prevent the concrete fragments on the workbench 1 from affecting the detection precision, and the concrete fragments on the workbench 1 need to be cleaned, therefore, the accommodating groove 18 matched with the bearing plate 7 is formed below the workbench 1, the hydraulic cylinder 19 driving the bearing plate 7 to lift is arranged below the bearing plate 7, the body of the hydraulic cylinder 19 is welded with the bottom surface of the accommodating groove 18, the piston rod of the hydraulic cylinder 19 is vertically arranged and welded with the lower surface of the bearing plate 7, the size and shape of the bearing plate 7 are consistent with the accommodating groove 18, the upper surface of the workbench 1 is slidably connected with the scraper 20 attached thereto, and two ends of the scraper 20 are connected with the guide rods 21 along the movement direction thereof, guide bar 21 passes cover frame 172 and rather than sliding connection, ejection of compact chamber 22 has been seted up to one side that scraper blade 20 was kept away from to workstation 1, workstation 1 lateral wall is equipped with the discharge gate 23 with ejection of compact chamber 22 intercommunication, the bottom surface in ejection of compact chamber 22 is the slope decurrent, the inclined plane in ejection of compact chamber 22 is towards discharge gate 23, discharge gate 23 one side articulates there is closed door 24, the articulated shaft axis of closed door 24 is parallel with support column 2 axis, the one end and the workstation 1 elastic clamping that the articulated shaft was kept away from to closed door 24. When clearing up the concrete piece, 19 drive bearing plate 7 of hydraulic cylinder that are equipped with descend to flush with workstation 1, then clear up the concrete piece on the workstation 1 by sliding connection's on the workstation 1 scraper blade 20, guide bar 21 drives scraper blade 20 and pushes away the piece to ejection of compact chamber 22 in, open the closed door 24 with ejection of compact chamber 22 intercommunication, clear up the piece, make things convenient for follow-up pressure detection to the concrete test block.

The implementation principle of the embodiment is as follows: when pressure detection is carried out on a concrete test block, the first air cylinder 6 is driven to drive the stress plate 4 to descend, pressure is applied to the concrete test block on the bearing plate 7 to crush the concrete test block, the pressure detection value of the concrete test block is recorded, then the first air cylinder 6 is lifted to clean concrete scraps adhered to the stress plate 4 and the bearing plate 7, when the concrete scraps on the bearing plate 7 are cleaned, the linear motor 12 drives the sliding block 11 arranged on the supporting frame 8 to slide in the sliding groove 10, the scraper 15 shovels the scraps adhered to the surface, then the brush roller 9 is horizontally moved to clean the scraps on the bearing plate 7, when the scraps adhered to the lower surface of the stress plate 4 are cleaned, the second air cylinder 14 drives the supporting frame 8 to ascend to clean the concrete scraps on the stress plate 4, and when the scraps on the surfaces of the stress plate 4 and the bearing plate 7 are cleaned, the scraps fall onto the workbench 1, clear up workstation 1, fall to flush with workstation 1 bearing plate 7 earlier by hydraulic cylinder 19, then drive scraper blade 20 by guide bar 21 and push away the piece to ejection of compact chamber 22 in, then clear up the piece by discharge gate 23 on the workstation 1, by spiller 15, brush roller 9 and the combined action of scraper blade 20 three, with more thorough of concrete piece clearance, increase the pressure detection precision to the concrete test block.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A concrete compression testing machine comprises a workbench (1), wherein two supporting columns (2) are arranged on the workbench (1) along the vertical direction, a cross beam (3) is arranged between the two supporting columns (2), a stress plate (4) is arranged below the cross beam (3), a pressure sensor (5) for detecting the pressure applied to the stress plate (4) is arranged on the stress plate (4), a first air cylinder (6) for driving the stress plate (4) to ascend and descend is fixedly connected to the cross beam (3), a bearing plate (7) is arranged on the workbench (1), the concrete compression testing machine is characterized in that a supporting frame (8) is arranged on the workbench (1), a brush roller (9) is connected to the supporting frame (8), the brush roller (9) is positioned between the bearing plate (7) and the stress plate (4), and the axis of the brush roller (9) is parallel to the axis of the cross beam (3), the brush roller lifting device is characterized in that a driving assembly for driving the brush roller (9) to horizontally move is arranged on the supporting frame (8), and a lifting assembly for driving the supporting frame (8) to lift is arranged on the supporting frame (8).

2. The concrete compression testing machine according to claim 1, wherein sliding grooves (10) are formed in two ends, located at the brush roller (9), of the supporting frame (8), the length direction of each sliding groove (10) is perpendicular to the axial direction of the brush roller (9), sliding blocks (11) are connected in the sliding grooves (10), two ends of the brush roller (9) are fixedly connected with the two sliding blocks (11), the driving assembly comprises a linear motor (12), the linear motor (12) comprises a sliding rod (121), a machine body (122) and a supporting seat (123), the supporting seat (123) is fixedly connected with the upper end of the supporting frame (8), the length direction of the sliding rod (121) is parallel to the length direction of the sliding grooves (10), and the machine body (122) of the linear motor (12) is fixedly connected with the side walls of the sliding blocks (11).

3. The concrete compression testing machine according to claim 2, wherein the two ends of the sliding chute (10) are provided with limiting blocks (13), and the height of each limiting block (13) is higher than the depth of the sliding chute (10).

4. The concrete pressure testing machine according to claim 1, characterized in that the lifting assembly comprises two second air cylinders (14), the cylinder bodies of the two second air cylinders (14) are fixedly connected with the workbench (1), and the piston rods of the two second air cylinders (14) are arranged along the vertical direction and are fixedly connected with the supporting frame (8).

5. The concrete compression testing machine according to claim 4, characterized in that the brush roller (9) comprises a shaft lever (91) and a brush cylinder (92) rotatably connected with the shaft lever, two ends of the shaft lever (91) of the brush roller are connected with supporting rods (16), two shoveling blades (15) are fixedly connected to the two sides of the brush roller (9) on the supporting rods (16), and one surfaces of the two shoveling blades (15) far away from the brush roller (9) are arranged in an arc shape.

6. The concrete pressure tester according to claim 1, characterized in that a blocking frame (17) which can be extended and retracted along the vertical direction is connected between the supporting frame (8) and the working platform (1).

7. The concrete pressure testing machine according to claim 6, characterized in that the blocking frame (17) comprises an inserting frame (171) and a sleeve frame (172), the inserting frame (171) is located in the sleeve frame (172) and is in sliding connection with the sleeve frame, the top end of the inserting frame (171) is fixedly connected with the supporting frame (8), and the lower end of the sleeve frame (172) is abutted to the workbench (1).

8. The concrete compression testing machine according to claim 7, characterized in that the workbench (1) is positioned below the bearing plate (7) and is provided with a containing groove (18) which is matched with the bearing plate (7), a hydraulic oil cylinder (19) which drives the bearing plate (7) to lift is arranged below the bearing plate (7), a cylinder body of the hydraulic oil cylinder (19) is fixedly connected with the bottom surface of the containing groove (18), a piston rod of the hydraulic oil cylinder (19) is arranged along the vertical direction and is fixedly connected with the lower surface of the bearing plate (7), the upper surface of the workbench (1) is connected with a scraper (20) which is attached with the workbench in a sliding manner, two ends of the scraper (20) are connected with guide rods (21) along the movement direction of the scraper, the guide rods (21) penetrate through the sleeve frame (172) and are connected with the sleeve frame in a sliding manner, one side of the workbench (1) far away from the scraper (20) is provided with a discharging cavity (, workstation (1) lateral wall is equipped with discharge gate (23) with ejection of compact chamber (22) intercommunication, discharge gate (23) one side articulates there is closing door (24), the articulated shaft axis and support column (2) axis of closing door (24) are parallel, the one end and the workstation (1) elasticity joint of articulated shaft are kept away from in closing door (24).