Civil engineering laboratory specimen production and testing device and method

Abstract

The present invention provides a civil engineering laboratory specimen automatic manufacturing device, comprising a material cleaning and drying device, a concrete material dividing and mixing device, a mixer cleaning device, a cement pumping and casting device, a vibrating and coating device, a steel bar bundling device and a testing device for testing the manufactured specimens. The present invention realizes cleaning and drying before concrete mixing, material dividing and mixing of concrete, and automatic casting, leveling and coating of the concrete mold surface after vibration by using a pressure roller in combination with a film clamp, with high efficiency and low manpower consumption; after the specimen is manufactured, it is further convenient to test the specimen; at the same time, the mixer can be cleaned in time after use, which is convenient and efficient.

Description

Technical Field

[0001] The invention relates to a civil engineering laboratory sample production and testing device and a method thereof. Background Art

[0002] Existing colleges and universities or scientific research institutes often need to conduct concrete specimen experiments and make specimens. The production of specimens is mostly done manually, from material cleaning, material separation and mixing, material vibration, leveling and coating. For students, the operation process is time-consuming, labor-intensive and inefficient.

[0003] After the specimen is made, the traditional method is to manually further fix the specimen and perform a pressure test on the specimen. In the pressure test of civil engineering columnar specimens, an extrusion deformation test is performed on the columnar specimen to test the deformation of the columnar specimen under pressure. In the past, during the test, the deformation test points were fixed at one-quarter, one-half and three-quarters of the original height of the columnar specimen. However, the height of the columnar specimen will change during the pressure test, and the test points at fixed positions cannot truly reflect the deformation of the columnar specimen. Summary of the invention

[0004] The present invention improves the above-mentioned problem, that is, the technical problem to be solved by the present invention is to provide a civil engineering laboratory specimen production and testing device and method thereof, which are easy to use and efficient.

[0005] The present invention is constructed as follows: it includes a material cleaning and drying device, a concrete material dividing and mixing device, a mixer cleaning device, a cement pumping and casting device, a vibrating and coating device, a steel bar bundling device and a testing device for testing the completed test piece, which are arranged in sequence. The vibrating and coating device includes a vibrating table, and the vibrating table includes a base and a vibrating motor fixed above the base. A turntable is fixed to the output shaft of the vibrating motor, and the turntable is eccentrically connected to a support table. The support table is used to place the mold. A vertical bracket is arranged on the side of the base. A swingable rocker arm is hinged on the top of the vertical bracket, a rolling pressure roller is hinged on the rocker arm laterally, a clamp capable of clamping a film is fixed to the rear side of the vertical bracket, the vertical bracket is driven to move laterally by a bracket driving device, the cement pumping casting device includes a casting device located above the vibrating table, the casting device includes a temporary storage tank, the temporary storage tank is connected to a negative pressure pipe, a feed pipe for material discharge is provided below the temporary storage tank, a negative pressure pump is provided on the negative pressure pipe, and a solenoid valve for controlling the opening and closing of the feed pipe is provided.

[0006] Furthermore, the testing equipment includes a machine base, an upper hydraulic lifting seat and a lower hydraulic lifting seat arranged on the machine base, the upper hydraulic lifting seat and the lower hydraulic lifting seat are both driven to rise and fall by hydraulic cylinders, and displacement meter moving devices are arranged on the sides of the upper hydraulic lifting seat and the lower hydraulic lifting seat, and the displacement meter moving device includes a first base and a second base arranged to slide on the first base, and first grooves are arranged on both sides of the first base to limit its movement, and the first base is driven to move by the first electric cylinder; second grooves are arranged on both sides of the second base on the first base to limit its movement, and a mounting frame and a first screw rod vertically arranged on the mounting frame are arranged on the second base, and the first screw rod is driven to rotate by a third motor arranged on the mounting frame, and the first screw rod has three sections of threads in the axial direction, and each section of the threads is respectively screwed to a limiting screw sleeve, and each limiting screw sleeve is screwed to the first base. A horizontally arranged displacement meter is connected to the sleeve; the first base is a rectangular plate body, the first groove is formed by a curved bar with a "7"-shaped cross section, and two "7"-shaped curved bars are provided on both sides of the first base, so as to limit the movement of the first base; the second base is a rectangular plate body, the second groove is formed by a curved bar with a "7"-shaped cross section, and two "7"-shaped curved bars are provided on both sides of the second base, so as to limit the movement of the second base; the mounting frame includes a vertical plate arranged on the second base and a horizontal plate arranged on the upper part of the vertical plate, and threaded bearings for rotating and hingedly connecting the first screw are installed on the horizontal plate and the second base; the pitch ratio of the three sections of thread on the first screw from top to bottom is 3:2:1; a clamping claw for mounting and clamping the test piece is provided on the surface of the lower hydraulic lifting seat, and the clamping claw is clamped by a cylinder or a hydraulic cylinder.

[0007] Furthermore, a visual camera or a laser sensor is fixed on the temporary storage tank.

[0008] The lifting of the ...

[0009] Furthermore, the temporary storage tank is arranged on a manipulator, and the manipulator includes a base and a first motor with a vertical output shaft fixed on the base, the output shaft of the first motor is fixedly connected to a second motor with a longitudinal output shaft, the output shaft of the second motor is fixedly connected to a first swing arm, and a horizontal cross arm is fixed to the upper end of the first swing arm, and the end of the horizontal cross arm is hingedly connected to the temporary storage tank via a bearing.

[0010] Furthermore, the steel bar bundling device includes a hollow rectangular frame, and steel bar fixing seats are evenly fixed on the upper surface of the rectangular frame. The steel bar fixing seats include a pair of curved supports arranged opposite to each other, and the gap between the longitudinal parts of the curved supports forms a gap for the steel bars to fall into. A bottom plate is fixed at the bottom of the rectangular frame, and a motor for driving the rectangular frame to rotate is fixed at the center of the bottom plate.

[0011] Furthermore, the lower end of the frame motor is fixed on a slide, and the slide is driven by an electric cylinder to move horizontally. A steel bar discharge hopper for storing steel bars is provided on the side of the upper part of the frame, and a steel bar output roller for outputting steel bars is provided in the middle of the steel bar discharge hopper, and the steel bar output roller is driven to rotate by a motor. Grooves for outputting steel bars are arranged at intervals on the surface of the steel bar output roller, and the two sides of the steel bar discharge hopper are close to the surface of the steel bar output roller to prevent the steel bars from falling out from the side. A discharge port is provided at the bottom of the steel bar discharge hopper, and a slide rail is provided under the slide, and the matching surface between the slide and the slide rail is I-shaped; the longitudinal portion of the inflection support is higher than twice the diameter of the steel bar, and the transverse portion of the inflection support is fixed to the upper surface of the rectangular frame by bolts, and the transverse portion of the inflection support has bolt holes for bolts to pass through, and the upper surface of the rectangular frame has grooves or bolt holes for bolts to pass through, and the steel bar fixing seats fixed on the opposite sides of the rectangular frame are symmetrically arranged.

[0012] Furthermore, the material cleaning and drying device comprises a first vibrating mesh screen, an upper flushing head and a lower flushing head arranged at the first side portion above and below the first vibrating mesh screen, the upper flushing head and the lower flushing head facing the first vibrating mesh screen, a hot air nozzle is arranged at the second side portion above the first vibrating mesh screen, the hot air nozzle faces the first vibrating mesh screen, the first end of the first vibrating mesh screen is higher than the second end, the first end of the first vibrating mesh screen is connected to the first inclined plate and the first inclined conveyor belt in sequence, the second end of the first vibrating mesh screen is connected to the second inclined plate and the second inclined conveyor belt in sequence The upper and lower flushing heads are provided with three heads respectively, the three upper flushing heads are parallel to each other and form an angle of 120 degrees with the horizontal plane, and the three lower flushing heads are parallel to each other and form an angle of -120 degrees with the horizontal plane; a water tank is provided below the first vibrating mesh screen, the water tank is connected to the water pipe and the water pump in sequence, and then communicated with the upper and lower flushing heads through pipelines; a filter net bag is provided at the upper part of the water tank body, the filter net bag is in the shape of a groove, and a hook is provided on its side to be hung on the side wall opening of the water tank; the first oblique delivery The output end of the conveyor belt is higher than the first end of the first vibrating mesh screen, and the first inclined plate is inclined downward from the output end of the first inclined conveyor belt and inclined toward the first end of the first vibrating mesh screen; the input end of the second inclined conveyor belt is lower than the second end of the first vibrating mesh screen, and the second inclined plate is inclined downward from the second end of the first vibrating mesh screen and inclined toward the input end of the second inclined conveyor belt; the output end of the second inclined conveyor belt leads to the material tank located on the frame; a plurality of material tanks are arranged on the upper part of the frame, a weighing hopper is arranged below each material tank, a mixer is arranged below the weighing hopper, and a discharging hopper car located on the discharging track is arranged below the discharging port of the mixer; the frame includes a plurality of upright poles, a first platform and a second platform arranged on the poles, the second platform is higher than the first platform, the material tank is arranged in the channel of the second platform, a funnel is arranged on the first platform, the weighing hopper is fixed on the frame of the first platform, and the lower discharging port of the weighing hopper is opposite to the upper opening of the funnel; a material guide channel is arranged at the lower part of the material tank, and the lower outlet of the material guide channel is opposite to the upper opening of the weighing hopper.

[0013] Furthermore, the concrete dividing and mixing device includes a frame, a plurality of material tanks are arranged on the upper part of the frame, a weighing hopper is arranged below each material tank, a mixer is arranged below the weighing hopper, and a discharge hopper car located on a discharge track is arranged below the discharge port of the mixer; the frame includes a plurality of upright poles, a first platform and a second platform arranged on the upright poles, the second platform is higher than the first platform, the material tank is arranged in a channel of the second platform, a funnel is arranged on the first platform, the weighing hopper is fixed on the frame of the first platform, and the lower discharge port of the weighing hopper is provided with a weighing hopper. The material port is directly opposite to the upper opening of the funnel; a material guide channel is provided at the lower part of the material tank, and the lower outlet of the material guide channel is directly opposite to the upper opening of the weighing bucket; the material tank is used to contain various ingredients of civil engineering test concrete, and the material tank is cylindrical in shape, and a control valve is provided at the lower part, and each control valve is connected with a material guide channel, and the lower outlet of the material guide channel is directly opposite to the upper opening of the corresponding weighing bucket; weighing sensors are provided between the first platform, the second platform and the material tank and the weighing bucket to realize weighing, and the weighing sensors of the material tank and the weighing bucket are of C3 and C6 grades respectively.

[0014] Furthermore, the mixer cleaning device includes a linear guide located on the side of the mixer and a guide seat movable along the linear guide, a lifting platform is provided above the guide seat, a rotatable high-pressure water gun with a nozzle located at the opening above the mixer, a water tank and a water pump for transporting water in the water tank to the high-pressure water gun are provided above the lifting platform; the high-pressure water gun includes a high-pressure water pipe in a curved or bent shape, a high-pressure nozzle located above the mixer is provided at the upper end of the high-pressure water pipe, and high-pressure nozzles are provided on the surrounding side and bottom of the high-pressure nozzle; a support shaft is provided at the bottom of the high-pressure water pipe, a bearing for the support shaft to pass through is provided inside the lifting platform, and a motor for driving the support shaft to rotate is provided inside the lifting platform; the high-pressure water pipe and the water pump are connected by a hose; a cylinder for driving the lifting platform to move up and down is provided inside the guide seat, and a guide column is also provided between the lifting platform and the guide seat.

[0015] Furthermore, the working method of the specimen production and testing device of the civil engineering laboratory includes the following working steps: (1) the material cleaning and drying device is started, and the material to be processed (such as gravel and sand) is input into the first end of the first vibrating mesh screen, and is transported from the first end to the second end thereof as the first vibrating mesh screen vibrates. During the transportation process, the upper flushing head and the lower flushing head flush the first vibrating mesh screen, thereby flushing the gravel and sand on the first vibrating mesh screen, so that the soil attached to the gravel and sand can be removed, which is beneficial to ensure the accuracy of subsequent tests; at the same time, when the gravel or sand is transported, the material to be processed (such as gravel and sand) is transported from the first end to the second end thereof. When it is delivered to the second end of the first vibrating mesh screen, the hot air nozzle blows hot air on the gravel or sand on the first vibrating mesh screen, which is conducive to drying the gravel or sand and reducing the moisture content therein; (2) The concrete dividing and mixing device is started: each material is delivered to each material tank, and each material tank introduces the material required for the corresponding test into the weighing bucket below through a valve. After the weighing of each weighing bucket meets the requirements, it is controlled by a valve to be introduced into the mixer below for mixing, and then output from the mixer outlet after mixing; (3) The cement pumping mold device of the civil engineering laboratory and the pouring device above the vibrating table work, and the A visual camera is fixed on the temporary storage tank. By making marks on the mold, the height of the poured concrete can be fed back by the visual camera, so that the output concrete volume can be controlled by using a battery valve or a negative pressure pump; (4) The mixed concrete is introduced into the mold, and the material is evenly filled under the drive of the vibrating motor. The clamp clamps the film conveying roller between two clamping plates, and then the two clamping plates are locked by bolts; (5) The bracket electric cylinder drives the two vertical brackets to move synchronously. Then, during the movement of the vertical bracket, in the initial state, the lower edge of the pressure roller is lower than the concrete surface to be smoothed, and then the bracket The electric cylinder drives the vertical support to move, thereby driving the swing arm, the pressure roller and the clamp to move together. When the pressure roller contacts the mold, the mold itself is fixed on the upper support platform, and then is passively swung upward by the mold, then bypasses the upper edge of the mold, and then continues to move horizontally under the action of the electric cylinder of the support. The pressure roller is pressed on the concrete surface in the mold by gravity and rolls to form a plane; (6) Since the clamp is fixed on the swing arm and is located on the rear side of the pressure roller, during the movement of the vertical support, the swing arm drags the clamp to drag a film to cover the concrete surface in the mold after the pressure roller is pressed, and then the film can be cut off;(7) When it is necessary to insert a steel mesh, before the concrete is introduced into the mold, a steel bar bundling device is used to place steel bars in the steel bar feed hopper along the axis of the steel bar output roller. As the steel bar output roller rotates, when it encounters the groove of the steel bar output roller, the steel bar will fall into the groove. The depth of the groove of the steel bar output roller can only accommodate one steel bar. As the steel bar output roller rotates, when the groove is exposed from the feed port below the steel bar feed hopper, it will directly fall to the bottom. At this time, as the sliding seat electric cylinder moves, the rectangular frame moves in a direction parallel to the axis of the steel bar output roller, and the steel bars falling from the feed port fall into each steel bar fixing seat in the same row one by one. After the steel bars in the same row fall into place, the frame motor rotates, and it can continue to build a steel bar layout perpendicular to the previously placed steel bars in the same direction to complete the steel bar layout. Then, the cross-sectional and longitudinal staggered steel bars are tied at the intersection to complete the manufacture of the steel mesh. Then, the completed steel mesh is placed in the mold to be poured through a mechanical device and left to stand. The test piece is made; (8) After the test piece is made, the test piece is sent to the test piece positioning seat of the test equipment by the manipulator; (9) The lower hydraulic lifting seat supporting the test piece positioning seat in the test equipment is lifted, and after the test piece is initially pressed by the upper hydraulic lifting seat and the lower hydraulic lifting seat in the test equipment, the manipulator is separated; (10) The displacement meter moving device in the test equipment is adjusted to make the contact of the displacement meter contact the surface of the test piece; the displacement meter moving device has three groups of displacement meters that can be adjusted in three axes, and the contact points of the three groups of displacement meters are respectively aligned with the positions of one quarter, one half and three quarters of the total height in the same vertical plane of the test piece; (11) The upper hydraulic lifting seat in the test equipment starts the continuous downward pressure test; (12) During the continuous downward pressure of the upper hydraulic lifting seat, the contact points of the three groups of displacement meters are also lowered, and the lowering values ​​of the three contact points from bottom to top are one quarter, one half and three quarters of the lowering values ​​of the upper hydraulic lifting seat, and at the same time, it is ensured that the three contact points are in contact with the surface of the test piece. ;

[0016] Compared with the prior art, the present invention has the following beneficial effects: the device has a simple structure and is easy to use. The material cleaning and drying device first cleans and dries the material to remove impurities, thereby ensuring the accuracy of subsequent tests. The concrete dividing and mixing device delivers each material to each material tank, and each material tank introduces the material required for the corresponding test into the weighing bucket below through a valve. After the weighing is satisfied, each weighing bucket is controlled by a valve to be introduced into the mixer below for mixing, and then output from the discharge port of the mixer. The cement pumping mold casting device pumps the mixed concrete in the mixer out and casts it into the mold. The pressure roller and the film clamp can be used to smooth and coat the surface of the concrete mold after vibration, which is efficient and requires little manpower. The steel bar bundling device can conveniently complete the manufacture of the steel bar mesh, and then the completed steel bar mesh is placed in the mold to be cast through a mechanical device, and then cast and molded through a casting device.

[0017] After the test piece is made, it is tested by the testing equipment. During the continuous downward pressure of the upper hydraulic lifting seat, the contact points of the three groups of displacement meters are also lowered. The descent values ​​of the three contact points from bottom to top are one quarter, one half and three quarters of the descent value of the upper hydraulic lifting seat. At the same time, the three contact points are ensured to be in contact with the surface of the test piece, thereby ensuring that the test contacts are always facing the positions of one quarter, one half and three quarters of the total height in the same vertical plane of the test piece, which is conducive to improving the accuracy of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the vibrating table and the pouring device of the present invention;

[0019] Figure 2 It is a schematic diagram of the structure of the vibrating table and the coating structure of the present invention;

[0020] Figure 3 It is a schematic diagram of the top view of the vibrating table and the coating structure of the present invention;

[0021] Figure 4 It is a schematic diagram of the coating state when the vertical support of the present invention moves to the middle;

[0022] Figure 5 This is a schematic diagram of the rectangular frame structure of the steel bar bundling device of the present invention;

[0023] Figure 6 This is a schematic diagram of the state structure of the steel bar bundling device of the present invention in Embodiment 2;

[0024] Figure 7 This is a schematic structural diagram of the steel bar mesh forming state of the steel bar bundling device of the present invention;

[0025] Figure 8 This is a schematic diagram of the structure of a cleaning device according to an embodiment of the present invention;

[0026] Fig. 9 It is a schematic diagram of the three-dimensional structure of the concrete dividing and mixing device for the civil engineering laboratory of the present invention;

[0027] Fig.10 yes Fig. 9 Partial View Figure 1 ;

[0028] Fig.11 yes Fig. 9 Partial View Figure 2 ;

[0029] Fig.12 It is a schematic diagram of the main structure of the material cleaning and drying device for a civil engineering laboratory of the present invention;

[0030] Fig.13 yes Fig.12 Schematic diagram of the local structure;

[0031] Fig.14 It is a schematic diagram of the main structure of the testing device of the present invention;

[0032] Fig.15 , 16 yes Fig.14 Schematic diagram of the local structure;

[0033] Fig.17 It is a schematic diagram of the structure of the limit screw sleeve and the displacement meter;

[0034] Fig.18 is a schematic diagram of the top view of the structure of the first base and the first groove;

[0035] Fig.19 yes Fig.18 Schematic diagram of the side view structure.

[0036] In the figure: A10-vibrating table, A101-base, A110-vibrating motor, A120-turntable, A130-support table, A131-lower support table, A132-upper support table, A133-spring, A134-limiting hole, A135-limiting rod, A140-mold, A150-guide rail, A20-vertical bracket, A201-bracket electric cylinder, A210-swing rod, A211-connecting rod, A220-pressing roller, A230-clamp, A231-clamping plate, A240-slider, A30-film bracket, A310-film conveying roller, A410-temporary storage tank, A4 20-negative pressure pipe, A430-feeding pipe, A440-negative pressure pump, A450-visual camera, A50-manipulator, A510-first motor, A520-second motor, A530-first swing arm, A540-horizontal cross arm, A60-rectangular frame, A610-bottom plate, A620-frame motor, A630-slide seat, A640-slide seat electric cylinder, A650-slide rail, A70-rebar fixing seat, A710-inflection support, A80-rebar feeding hopper, A810-rebar output roller, A820-groove, A830-feeding port, A100-rebar;

[0037] B1-first vibrating screen, B101-first end, B102-second end, B2-upper flushing head, B3-lower flushing head, B4-hot air nozzle, B5-first inclined plate, B6-first inclined conveyor belt, B7-second inclined plate, B8-second inclined conveyor belt, B801-input end, B802-output end, B9-water tank, B10-water pipe, B11-water pump, B12-pipeline, B13-filter net bag, B14-bend hook, B15-material tank, B16-weighing bucket, B17-mixer, B18-discharging hopper Car, B19-discharging track, B20-frame, B21-pole, B22-first platform, B23-second platform, B24-funnel, B25-frame, B26-material guide channel, B27-linear guide rail, B28-guide seat, B29-lifting platform, B30-high-pressure water gun, B31-high-pressure water pipe, B32-high-pressure nozzle, B33-high-pressure nozzle, B34-support shaft, B35-water tank, B36-water pump, B37-bearing, B38-motor, B39-hose, B40-cylinder, B41-guide column;

[0038] C1-machine base, C2-upper hydraulic lifting seat, C3-lower hydraulic lifting seat, C4-displacement meter moving device, C5-first base, C6-second base, C7-first groove, C8-first electric cylinder, C9-second groove, C10-mounting frame, C11-first screw, C12-third motor, C13-limiting screw sleeve, C14-displacement meter, C15-vertical plate, C16-horizontal plate, C17-threaded bearing, C18-claw. DETAILED DESCRIPTION

[0039] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] Example 1: Figures 1 to 4 As shown, in this embodiment, a civil engineering laboratory specimen production and testing device is provided, including a material cleaning and drying device, a concrete dividing and mixing device, a mixer cleaning device, a cement pumping and casting device, a vibrating and coating device, a steel bar bundling device and testing equipment for testing the completed specimens, which are arranged in sequence.

[0041] The above-mentioned vibration coating device includes a vibration table A10, which includes a base A101 and a vibration motor A110 fixed on the base. The output shaft of the vibration motor is fixed with a turntable A120, and the turntable is eccentrically connected to a support table A130, and the support table is used to place a mold A140.

[0042] In this embodiment, a vertical bracket A20 is provided on the side of the base, and a swinging rocker A210 is hinged on the top of the vertical bracket, and a rolling pressure roller A220 is laterally hinged on the rocker. A clamp A230 capable of clamping a film is also fixed on the rear side of the vertical bracket, and the vertical bracket is driven to move laterally by a bracket driving device.

[0043] In this embodiment, there is a pair of vertical brackets A20, the swing arms of the two vertical brackets are connected by a connecting rod A211, and the pressure roller A220 is hingedly connected to the connecting rod A211.

[0044] In this embodiment, a vertically arranged film bracket A30 is fixed on the side of the base, and a rotatable film conveying roller A310 is hinged on the film bracket A30, and a film is wound on the film conveying roller. The clamp A230 includes a pair of clamps A231 fixedly connected by bolts, one of which is fixed on the rocker arm, and the film is clamped between the two clamps.

[0045] In this embodiment, the bracket driving device is a bracket electric cylinder A201, the length of the pressure roller matches the side length of the corresponding mold, a slider A240 is fixed to the bottom of the vertical bracket, and guide rails A150 that cooperate with the slider are fixed on both sides of the base A101, and the matching surface between the guide rail and the slider is I-shaped.

[0046] In this embodiment, the cement pumping mold device includes a pouring device located above the vibrating table, the pouring device includes a temporary storage tank A410, the temporary storage tank is connected to the negative pressure pipe A420, and a discharge pipe A430 is provided below the temporary storage tank for material discharge, and a negative pressure pump A440 is provided on the negative pressure pipe. The discharge pipe A430 is provided with a solenoid valve for controlling the opening and closing of the discharge.

[0047] In this embodiment, a visual camera A450 is fixed on the temporary storage tank. By making a mark on the mold, the height of the poured concrete can be fed back by the visual camera, so that the output amount of concrete can be controlled by using a battery valve or a negative pressure pump A440;

[0048] In actual design, a laser ranging sensor can also be used to feedback the height of the concrete in the mold to set the concrete supply amount.

[0049] In this embodiment, the general feed pipe A430 is arranged directly above the mold placed on the support platform. In order to ensure that the concrete entering the mold can evenly and fully fill the inner cavity of the mold, the support platform A130 includes a lower support platform A131 eccentrically hinged to the turntable and an upper support platform A132 connected to the upper part of the lower support platform via a spring A133. The spring can drive the support platform A130 to rotate around the axis of the turntable and the rotating shaft of the vibrating motor A110 during the rotation of the turntable, and the spring A133 can be used to achieve up and down vibration to promote the concrete to fully enter various areas of the mold.

[0050] In order to fix the mold, the surface of the upper support platform A132 has a limiting hole A134, and a limiting rod A135 for limiting the mold is inserted into the limiting hole. A plurality of limiting holes are evenly distributed on the surface of the upper support platform, so that it can correspond to molds of different sizes and structures.

[0051] During operation, the stirred concrete is introduced into the mold, and the material is evenly filled under the drive of the vibrating motor A110. Then the bracket electric cylinder 201 drives the two vertical brackets to move synchronously. Then, during the movement of the vertical bracket, in the initial state, the lower edge of the pressure roller is lower than the concrete surface to be smoothed. Then the bracket electric cylinder A201 drives the vertical bracket A20 to move, thereby driving the swing arm, the pressure roller and the clamp to move together. When the pressure roller contacts the mold, the mold itself is fixed on the upper support platform A132, and then it is passively swung upward by the top of the mold, and then it bypasses the upper edge of the mold, and then continues to move horizontally under the action of the bracket electric cylinder. The pressure roller is pressed on the concrete surface in the mold by gravity to form a plane.

[0052] The vertical brackets on both sides of the base move synchronously, and the bracket electric cylinder can be set on only one side, and the stability during the movement is ensured by the cooperation of the guide rail and the slider.

[0053] Before work, the clamp A230 clamps the film conveying roller A310 between the two clamps A231, and then the two clamps are locked by bolts. Since the clamp is fixed on the rocker arm at the rear side of the pressure roller, during the movement of the vertical bracket, the rocker arm A210 drags the clamp A230 to cover the surface of the concrete after the pressure roller is pressed in the mold, and then the film can be cut.

[0054] Embodiment 2: The temporary storage tank is arranged on a manipulator A50, and the manipulator includes a base and a first motor A510 with a vertical output shaft fixed on the base, the output shaft of the first motor is fixedly connected to the second motor A520 with a longitudinal output shaft, the output shaft of the second motor is fixedly connected to the first swing arm A530, the upper end of the first swing arm is fixed with a horizontal cross arm A540 arranged horizontally, the end of the horizontal cross arm is hingedly connected to the temporary storage tank via a bearing, the position of the temporary storage tank A410 can be adjusted by using the first motor and the second motor, the negative pressure pump A440 inputs the mixed concrete into the temporary storage tank through the negative pressure pipe, the discharge pipe A430 with the temporary storage tank A410 is kept facing downward, and the opening and closing of the discharge pipe A430 is controlled by the solenoid valve.

[0055] Example 3: Figures 5 to 7 As shown, in this embodiment, a steel bar bundling device is arranged beside the vibrating table A10, including a hollow rectangular frame A60, and a steel bar fixing seat A70 is evenly fixed on the upper surface of the rectangular frame. The steel bar fixing seat A70 includes a pair of curved supports A710 arranged opposite to each other, and the gap between the longitudinal parts of the curved supports A710 forms a gap for the steel bar A100 to fall into. A bottom plate A610 is fixed to the bottom of the rectangular frame A60, and a frame motor A620 for driving the rectangular frame to rotate is fixed at the center of the bottom plate.

[0056] In this embodiment, the longitudinal portion of the curved support A710 is higher than twice the diameter of the steel bar, and the transverse portion of the curved support is fixed to the upper surface of the rectangular frame by bolts. The transverse portion of the curved support has bolt holes for the bolts to pass through, and the upper surface of the rectangular frame has grooves or bolt holes for the bolts to pass through.

[0057] During operation, the steel bar fixing seat A70 is installed on the rectangular frame A60 according to the size of the steel mesh and the spacing between the steel bars. The steel bars are placed into the corresponding steel bar fixing seats A70 on both sides along the longitudinal or transverse direction, and the steel bars fall into the limit position between the longitudinal parts of the curved support A710. After the steel bars in the same row are placed, the frame motor A620 rotates 90 degrees, and then it can continue to build in the same direction perpendicular to the previously placed steel bars to complete the steel bar layout that constitutes the steel mesh. After that, the transverse and longitudinal staggered steel bars can be tied at the intersections.

[0058] In this embodiment, in order to facilitate the unloading of steel bars, in this embodiment, the lower end of the frame motor A620 is fixed on a slide A630, and the slide is driven by a driving device to move horizontally. The upper side of the frame is provided with a steel bar unloading hopper A80 for storing steel bars, and the middle part of the steel bar unloading hopper is provided with a steel bar output roller A810 for outputting steel bars. The steel bar output roller is driven to rotate by a motor, and grooves A820 for outputting steel bars are arranged on the surface of the steel bar output roller at intervals. Both sides of the steel bar unloading hopper are close to the surface of the steel bar output roller to prevent the steel bars from falling out from the sides, and the bottom of the steel bar unloading hopper is provided with a unloading port A830.

[0059] In this embodiment, the driving device is a slide electric cylinder, and a slide rail A650 is provided under the slide, and the matching surface between the slide A630 and the slide rail A650 is I-shaped.

[0060] During operation, steel bars are placed in the steel bar discharge hopper along the axis of the steel bar output roller A810. As the steel bar output roller rotates and encounters the groove of the steel bar output roller, the steel bar will fall into the groove. Then, due to the depth of the groove of the steel bar output roller, only one steel bar can fall into it. As the steel bar output roller rotates, when the groove is exposed from the discharge port A830 below the steel bar discharge hopper A80, it will fall directly to the bottom. At this time, as the sliding seat electric cylinder A640 moves, the rectangular frame is used to move in a direction parallel to the axial direction of the steel bar output roller, and the steel bars falling from the discharge port A830 are dropped one by one into each steel bar fixing seat A70 in the same row. After the same row of steel bars are dropped, the frame motor A620 rotates 90 degrees, and can continue to build in the same direction perpendicular to the top of the previously placed steel bars to complete the steel bar layout that constitutes the steel mesh. Then, the cross-sectional and longitudinal staggered steel bars are tied at the intersection to complete the manufacture of the steel mesh. Then, the completed steel mesh is placed in the mold to be cast through a mechanical device, and then cast through a casting device.

[0061] During installation, the steel bar lower hopper A80 is fixed to the ground through a support body, and the steel bar output roller is driven to rotate by a motor fixed on the support body. The rotation speed and the movement speed of the slide electric cylinder are coordinated to satisfy the steel bar output roller to place the steel bars in its groove one by one into each steel bar fixing seat A70 of the same row of rectangular frames.

[0062] Example 4: Figures 8 to 13 As shown, the mixer cleaning device includes a linear guide rail B27 located on the side of the mixer and a guide seat B28 movable along the linear guide rail, a lifting platform B29 is provided above the guide seat, a rotatable high-pressure water gun B30 with a nozzle located at the opening above the mixer, a water tank B35 and a water pump B36 for transporting water in the water tank to the high-pressure water gun are provided above the lifting platform.

[0063] A guide groove matching the linear guide rail is provided below the guide seat.

[0064] The high-pressure water gun comprises a high-pressure water pipe B31 in a bent or curved shape, the upper end of which is provided with a high-pressure nozzle B32 located above the mixer, and the surrounding side and bottom of the high-pressure nozzle are provided with high-pressure nozzles B33.

[0065] A support shaft B34 is provided at the bottom of the high-pressure water pipe. In order to enhance the rotation stability of the high-pressure water pipe, a bearing B37 for the support shaft to pass through is provided inside the lifting platform, and a motor B38 for driving the support shaft to rotate is provided inside the lifting platform.

[0066] The high-pressure water pipe and the water pump are connected by a hose B39, and the hose needs to have a certain length to avoid affecting the rotation of the high-pressure water pipe.

[0067] The guide seat is internally provided with a cylinder B40 for driving the lifting platform to move up and down. In order to enhance the stability of the lifting platform, four guide columns B41 are also provided between the lifting platform and the guide seat. The four guide columns can be distributed at the four corners of the lifting platform. The lower end of the guide column is fixedly connected to the guide seat, and the upper end of the guide column passes through the lifting platform.

[0068] When the above-mentioned civil engineering laboratory mixer cleaning device is working, the guide seat moves along the linear guide rail to approach the mixer B17, the motor rotates to drive the high-pressure water pipe to rotate a certain angle, so that the high-pressure nozzle of the high-pressure water gun moves to the opening position on the mixer, and the cylinder drives the lifting platform to descend, so that the high-pressure nozzle moves from top to bottom inside the mixer, and the water pump pumps the cleaning liquid in the water tank to the high-pressure water pipe, and sprays it through multiple nozzles of the high-pressure nozzle to clean the inside of the mixer. During the cleaning process, the cylinder can drive the lifting platform to move up and down within a certain range, so that the high-pressure nozzle can clean the inside of the mixer more comprehensively; in addition, it is worth noting here that during the cleaning process, the stirring shaft inside the mixer can also rotate, which is conducive to better cleaning. Finally, after the cleaning is completed, the sewage is discharged from the discharge port of the mixer.

[0069] In this embodiment, a concrete material dividing and mixing device is arranged above the high-pressure water gun, and the concrete material dividing and mixing device includes a frame B20, and a plurality of material tanks B15 are arranged on the upper part of the frame. The materials in the material tanks B15 include gravel, sand, cement, additives, etc.; a weighing hopper B16 is arranged below each material tank, and a mixer B17 is arranged below the weighing hopper B16, and a discharge hopper car B18 located on a discharge track B19 is arranged below the discharge port of the mixer B17. The material tank B15 is used to hold concrete for civil engineering tests. The material tank B15 is in the shape of a cylinder and has a control valve at the bottom. Each control valve is connected with a material guide channel B26. The lower outlet of the material guide channel faces the upper opening of the corresponding weighing hopper B16. After the control valve is opened, the material in the material tank B15 passes through the material guide channel B26 and enters the weighing hopper B16. The weighing hopper B16 is used for weighing and is an existing commonly used weighing hopper. A control valve is provided at the lower end of the weighing hopper B16 to realize the opening and closing of the material discharge. The mixer B17 is used to stir the material and the discharge hopper car B18 is used to transport the discharged material.

[0070] Furthermore, for the sake of reasonable design, the above-mentioned frame B20 includes multiple upright poles B21, a first platform B22 and a second platform B23 arranged on the poles B21, the frame B20 can be welded from square steel pipes, the second platform B23 is higher than the first platform B22, the material tank B15 is arranged in the channel of the second platform B23, a funnel B24 is arranged on the first platform B22, the weighing bucket B16 is fixed on the frame B25 of the first platform, and the lower discharge port of the weighing bucket B16 is opposite to the upper opening of the funnel B24, and weighing sensors are arranged between the first platform B22, the second platform B23 and the material tank B15 and the weighing bucket B16 to realize weighing, and the weighing sensors for the material tank B15 and the weighing bucket B16 can be C3 and C6 grades respectively.

[0071] The above-mentioned frame B25 is a rectangular frame, which is formed by four vertical rods welded at the bottom of a rectangular frame connected by four horizontal rods. Each weighing bucket B16 is arranged in the rectangular frame, and a C6 grade weighing sensor is arranged between the weighing bucket B16 and the rectangular frame. The funnel B24 is a conical bucket, and the diameter of the opening on the conical bucket is larger than the lower size of multiple weighing buckets B16, so that the materials in the weighing buckets B16 will fall into the funnel B24, and the lower opening of the conical bucket is facing the feed port of the mixer B17.

[0072] In this embodiment, a material cleaning and drying device is provided at the front side of the material tank, and the material cleaning and drying device includes a first vibrating mesh screen B1, an upper flushing head B2 and a lower flushing head B3 provided at the first side portion above and below the first vibrating mesh screen, the upper flushing head and the lower flushing head facing the first vibrating mesh screen, a hot air nozzle B4 is provided at the second side portion above the first vibrating mesh screen, the hot air nozzle facing the first vibrating mesh screen, a first end B101 of the first vibrating mesh screen B1 is higher than the second end, the first end of the first vibrating mesh screen is connected to the first inclined plate and the first inclined conveyor belt in sequence, and the second end B102 of the first vibrating mesh screen is connected to the second inclined plate B7 and the second inclined conveyor belt B8 in sequence; the first vibrating mesh screen B1 can be a metal mesh screen, which is driven by a vibration motor to vibrate and screen out mud and sand, the upper flushing head B2 and the lower flushing head B3 can be shower heads, which have the function of flushing mud on stones and sand under a certain water pressure, the hot air nozzle B4 is like an electric wind blower, which serves to dry the moisture on stones and gravel, and the hot air nozzle B4 can be one or more.

[0073] During operation, the processed material (such as gravel, sand) is input into the first end of the first vibrating mesh screen, and is transported from the first end to the second end as the first vibrating mesh screen vibrates. During the transporting process, the upper flushing head and the lower flushing head flush the first vibrating mesh screen, thereby flushing the gravel and sand on the first vibrating mesh screen, and removing the soil attached to the gravel and sand, which is beneficial to ensure the accuracy of subsequent tests; at the same time, when the gravel or sand is transported to the second end of the first vibrating mesh screen, the hot air nozzle blows hot air on the gravel or sand on the first vibrating mesh screen, which is beneficial to drying the gravel or sand and reducing the moisture content therein, which is also beneficial to ensure the accuracy of subsequent tests.

[0074] Furthermore, there are three upper flushing heads B2 and three lower flushing heads B3 respectively. The three upper flushing heads B2 are parallel to each other and form an angle of 120 degrees with the horizontal plane, and the three lower flushing heads B3 are parallel to each other and form an angle of -120 degrees with the horizontal plane. Through this design, the effect of flushing soil on stones and sand can be improved.

[0075] A water tank is provided below the above-mentioned first vibrating mesh screen, and the water tank is connected to the water pipe B10 and the water pump B11 in sequence, and then connected to the upper flushing head and the lower flushing head through pipelines; a filter net bag B13 is provided on the upper inner part of the above-mentioned water tank B9, and the filter net bag is in the shape of a groove, and a hook B14 is provided on its side to be hung on the side wall opening of the water tank B9; the muddy water flowing down from the first vibrating mesh screen 1 is filtered by the filter net bag B13, so that the water entering the water tank B9 is relatively clean, thereby realizing a certain water circulation. Of course, the water supply of the upper flushing head B2 and the lower flushing head B3 can also come from tap water.

[0076] The output end of the first inclined conveyor belt is higher than the first end of the first vibrating mesh screen, and the first inclined plate is inclined downward from the output end of the first inclined conveyor belt and towards the first end of the first vibrating mesh screen; the input end of the second inclined conveyor belt B8 is lower than the second end B102 of the first vibrating mesh screen B1, and the second inclined plate B7 is inclined downward from the second end B102 of the first vibrating mesh screen B1 and towards the input end B801 of the second inclined conveyor belt B8; the above design can achieve better material transmission.

[0077] The output end B802 of the second inclined conveyor belt B8 leads to the material tank B15 of the civil engineering laboratory concrete dividing and mixing device located on the frame B20. The material is cleaned by the civil engineering laboratory material cleaning and drying device to ensure that subsequent tests are more accurate. After cleaning, the material is passed into the civil engineering laboratory concrete dividing and mixing device for dividing and mixing.

[0078] Example 5: Figures 14 to 19As shown, the above-mentioned testing equipment includes a machine base C1, an upper hydraulic lifting seat C2 and a lower hydraulic lifting seat C3 arranged on the machine base C1, the upper hydraulic lifting seat C2 and the lower hydraulic lifting seat C3 are driven to rise and fall by a hydraulic cylinder or a screw nut slider mechanism, and a displacement meter moving device C4 is arranged on the sides of the upper hydraulic lifting seat C2 and the lower hydraulic lifting seat C3, and the displacement meter moving device C4 includes a first base C5 and a second base C6 slidably arranged on the first base C5, and first grooves C7 are arranged on both sides of the first base C5 to limit its movement, and the first base C5 is driven to move by a first electric cylinder C8; the first base C5 is provided with a first groove C7 on both sides of the second base C6 The second base C6 is provided with a mounting frame C10 and a first screw C11 vertically arranged on the mounting frame C10. The first screw C11 is driven to rotate by a third motor C12 arranged on the mounting frame C10. The first screw C11 has three sections of threads in the axial direction, namely a first section of threads L1, a second section of threads L2 and a third section of threads L3. Each section of threads is respectively screwed with a limiting screw sleeve C13. A guide channel for the limiting screw sleeve C13 is provided beside the screw. A horizontally arranged displacement meter C14 is connected to each limiting screw sleeve C13. The displacement meter can be electronic or mechanical. The electronic type can collect data in real time. When C12 drives the first screw to rotate, the first section of thread L1, the second section of thread L2 and the third section of thread L3 on it drive the limit screw sleeve thereon to rise and fall. Since the pitch ratio of the three sections of thread from top to bottom on the first screw is 3:2:1, when the first screw rotates one circle, the lifting height ratio of the limit screw sleeve thereon is 3:2:1, thereby ensuring that the contact points of the displacement meter C14 test are always facing the positions of one quarter, one half and three quarters of the total height in the same vertical plane of the specimen, which is conducive to improving the accuracy of the test. For example, the original total height of the specimen is 100mm, and the height positions of the three displacement meter test contact points are 25mm, 50mm and 75mm from bottom to top. After extrusion, it is 90mm, that is, the upper hydraulic lifting seat C2 drops 10mm, and the height values ​​of the three displacement meter test contacts from bottom to top are 10mm*0.25=2.5mm, 10mm*0.50=5mm, 10mm*0.75=0.75mm. Finally, the height positions of the three displacement meter test contacts are 22.5mm, 45mm, and 67.5mm from bottom to top. These three position values ​​are one-quarter, one-half, and three-quarters of the total height of 90mm after extrusion. This ensures that the contacts of the displacement meter C14 test are always facing one-quarter, one-half, and three-quarters of the total height in the same vertical plane of the specimen, which is beneficial to improving the accuracy of the test.

[0079] Specifically, the first base C5 is a rectangular plate, and the first groove C7 is formed by a curved bar with a "7"-shaped cross-section. Two "7"-shaped curved bars are provided on both sides of the first base, so as to limit the movement of the first base. The two sides of the first base are limited to slide in the grooves on both sides.

[0080] Specifically, the second base C6 is a rectangular plate, and the second groove C9 is formed by a curved bar with a "7"-shaped cross-section. Two "7"-shaped curved bars are provided on both sides of the second base, so as to limit the movement of the second base. The two sides of the second base are limited to slide in the grooves on both sides.

[0081] Specifically, the above-mentioned mounting frame C10 includes a vertical plate C15 arranged on the second base and a horizontal plate C16 arranged on the upper part of the vertical plate. The horizontal plate C16 and the second base C6 are installed with a threaded bearing C17 for rotating and hingedly connecting the first screw rod C11. The threaded bearing C17 is supported at the lower end and the upper part of the first screw rod C11. This design can provide structural stability.

[0082] In order to improve the placement stability of the test piece, a clamping claw C18 for mounting and clamping the test piece K is provided on the surface of the lower hydraulic lifting seat. The clamping claw C18 can be driven by a cylinder or a hydraulic cylinder for clamping.

[0083] In the process of continuous downward pressure of the upper hydraulic lifting seat in the civil engineering laboratory pressure testing method of the present invention, the contact points of the three groups of displacement meters are also lowered, and the descent values ​​of the three contact points from bottom to top are one quarter, one half and three quarters of the descent value of the upper hydraulic lifting seat. At the same time, it is ensured that the three contact points are in contact with the surface of the specimen, thereby ensuring that the tested contacts are always facing the positions of one quarter, one half and three quarters of the total height in the same vertical plane of the specimen, which is beneficial to improving the accuracy of the test.

[0084] Unless otherwise stated, any technical solution disclosed in the present invention disclosed above, if it discloses a numerical range, then the disclosed numerical range is a preferred numerical range, and any technician in the field should understand that the preferred numerical range is only a numerical value with a more obvious technical effect or representative value among many implementable numerical values. Since there are too many numerical values ​​to be exhaustive, the present invention discloses some numerical values ​​to illustrate the technical solution of the present invention, and the numerical values ​​listed above should not constitute a limitation on the scope of protection of the present invention.

[0085] At the same time, if the above-mentioned invention discloses or involves components or structural parts that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connected by bolts or screws), and can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integrated structure (for example, manufactured by one-piece molding using a casting process) (except when it is obviously impossible to use an integrated molding process).

[0086] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in the present invention include states or shapes that are approximate, similar, or close to them.

[0087] Any component provided by the present invention may be assembled from a plurality of separate components, or may be a separate component manufactured by an integral forming process.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A civil engineering laboratory specimen production and testing device, characterized in that: The invention comprises a material cleaning and drying device, a concrete material dividing and mixing device, a mixer cleaning device, a cement pumping and casting device, a vibrating and coating device, a steel bar bundling device and a testing device for testing the completed test piece, which are sequentially arranged to prepare the test piece. The vibrating and coating device comprises a vibrating table, and the vibrating table comprises a base and a vibrating motor fixed on the base. A turntable is fixed to the output shaft of the vibrating motor, and the turntable is eccentrically connected to a support table. The support table is used to place the mold. A vertical bracket is arranged on the side of the base. A swinging arm capable of swinging is hinged to the top of the bracket, a rolling roller is hinged to the swing arm laterally, a clamp capable of clamping a film is also fixed to the rear side of the vertical bracket, the vertical bracket is driven to move laterally by a bracket driving device, the cement pumping mold device comprises a pouring device located above the vibrating table, the pouring device comprises a temporary storage tank, the temporary storage tank is connected to a negative pressure pipe, a feed pipe for discharging materials is provided below the temporary storage tank, a negative pressure pump is provided on the negative pressure pipe, and a solenoid valve for controlling the opening and closing of the feed pipe is provided; The testing equipment includes a machine base, an upper hydraulic lifting seat and a lower hydraulic lifting seat arranged on the machine base, the upper hydraulic lifting seat and the lower hydraulic lifting seat are driven to rise and fall by hydraulic cylinders, and displacement meter moving devices are arranged on the sides of the upper hydraulic lifting seat and the lower hydraulic lifting seat, and the displacement meter moving device includes a first base and a second base arranged on the first base and slidingly movable, and first grooves for limiting its movement are arranged on both sides of the first base, and the first base is driven to move by the first electric cylinder; second grooves for limiting its movement are arranged on both sides of the first base and located on the second base, and a mounting frame and a first screw rod vertically arranged on the mounting frame are arranged on the second base, and the first screw rod is driven to rotate by a third motor arranged on the mounting frame, and the first screw rod has three sections of threads in the axial direction, and each section of the threads is respectively screwed with a screw sleeve, and each screw sleeve is connected to There is a horizontally arranged displacement meter; the first base is a rectangular plate body, the first groove is formed by a curved bar with a "7"-shaped cross section, and two "7"-shaped curved bars are provided on both sides of the first base, that is, the movement of the first base is limited; the second base is a rectangular plate body, the second groove is formed by a curved bar with a "7"-shaped cross section, and two "7"-shaped curved bars are provided on both sides of the second base, that is, the movement of the second base is limited; the mounting frame includes a vertical plate arranged on the second base and a horizontal plate arranged on the upper part of the vertical plate, and threaded bearings for rotating and hingedly connecting the first screw are installed on the horizontal plate and the second base; the pitch ratio of the three sections of the thread on the first screw from top to bottom is 3:2:1; a clamping claw for mounting and clamping the test piece is provided on the surface of the lower hydraulic lifting seat, and the clamping claw is driven by a cylinder or a hydraulic cylinder to clamp.

2. The civil engineering laboratory specimen production and testing device according to claim 1, characterized in that: A visual camera or a laser sensor is fixed on the temporary storage tank; the support platform comprises a lower support platform eccentrically hingedly connected to the turntable and an upper support platform connected to the upper part of the lower support platform via a spring, the surface of the upper support platform is provided with a limiting hole, and a limiting rod for limiting the mold is inserted into the limiting hole; a vertically arranged film bracket is fixed on the side of the base, a film conveying roller is hingedly connected to the film bracket, and a film is wound on the film conveying roller, the clamp comprises a pair of clamps fixedly connected by bolts, one of the clamps is fixed on the rocker rod, and the film is clamped between the two clamps; there is a pair of vertical brackets, and the rockers of the two vertical brackets are connected by a connecting rod, the pressure roller is hingedly connected to the connecting rod, and the length of the pressure roller matches the side length of the corresponding mold, a slider is fixed at the bottom of the vertical bracket, and guide rails matching the slider are fixed on both sides of the base, and the matching surface of the guide rail and the slider is I-shaped, and the bracket driving device is a bracket electric cylinder.

3. The civil engineering laboratory specimen production and testing device according to claim 1, characterized in that: The temporary storage tank is arranged on a manipulator, and the manipulator includes a base and a first motor with a vertical output shaft fixed on the base, the output shaft of the first motor is fixedly connected to a second motor with a longitudinal output shaft, the output shaft of the second motor is fixedly connected to a first swing arm, and a horizontal cross arm arranged horizontally is fixed to the upper end of the first swing arm, and the end of the horizontal cross arm is hingedly connected to the temporary storage tank via a bearing.

4. The civil engineering laboratory specimen production and testing device according to claim 3, characterized in that: The steel bar bundling device includes a hollow rectangular frame, and steel bar fixing seats are evenly fixed on the upper surface of the rectangular frame. The steel bar fixing seats include a pair of curved supports arranged opposite to each other, and the gap between the longitudinal parts of the curved supports forms a gap for the steel bars to fall into. A bottom plate is fixed at the bottom of the rectangular frame, and a motor for driving the rectangular frame to rotate is fixed at the center of the bottom plate.

5. The civil engineering laboratory specimen production and testing device according to claim 4, characterized in that: The lower end of the frame motor is fixed on a slide, and the slide is driven by an electric cylinder to move horizontally. A steel bar discharge hopper for storing steel bars is provided on the side of the upper part of the frame, and a steel bar output roller for outputting steel bars is provided in the middle of the steel bar discharge hopper, and the steel bar output roller is driven to rotate by a motor. Grooves for outputting steel bars are arranged at intervals on the surface of the steel bar output roller, and the two sides of the steel bar discharge hopper are close to the surface of the steel bar output roller to prevent the steel bars from falling out from the side. A discharge port is provided at the bottom of the steel bar discharge hopper, and a slide rail is provided under the slide, and the matching surface between the slide and the slide rail is I-shaped; the longitudinal portion of the inflection support is higher than twice the diameter of the steel bar, and the transverse portion of the inflection support is fixed to the upper surface of the rectangular frame by bolts, and the transverse portion of the inflection support has bolt holes for bolts to pass through, and the upper surface of the rectangular frame has grooves or bolt holes for bolts to pass through, and the steel bar fixing seats fixed on the opposite sides of the rectangular frame are symmetrically arranged.

6. The civil engineering laboratory specimen production and testing device according to claim 5, characterized in that: The material cleaning and drying device comprises a first vibrating mesh screen, an upper flushing head and a lower flushing head arranged at the first side portion above and below the first vibrating mesh screen, the upper flushing head and the lower flushing head facing the first vibrating mesh screen, a hot air nozzle is arranged at the second side portion above the first vibrating mesh screen, the hot air nozzle facing the first vibrating mesh screen, the first end of the first vibrating mesh screen is higher than the second end, the first end of the first vibrating mesh screen is connected to the first inclined plate and the first inclined conveyor belt in sequence, and the second end of the first vibrating mesh screen is connected to the second inclined plate and the second inclined conveyor belt in sequence; the upper flushing head and the lower flushing head are respectively provided with three, the three upper flushing heads are parallel to each other and form an angle of 120 degrees with the horizontal plane, and the three lower flushing heads are parallel to each other and form an angle of -120 degrees with the horizontal plane; a water tank is arranged below the first vibrating mesh screen, the water tank is connected to the water pipe and the water pump in sequence, and then communicated with the upper flushing head and the lower flushing head through a pipeline; a filter net bag is arranged at the upper part of the water tank body, the filter net bag is in the shape of a groove, and a hook is arranged on its side to hang on the side wall opening of the water tank; the first inclined conveyor belt The output end of the conveyor belt is higher than the first end of the first vibrating mesh screen, and the first inclined plate is inclined downward from the output end of the first inclined conveyor belt and inclined toward the first end of the first vibrating mesh screen; the input end of the second inclined conveyor belt is lower than the second end of the first vibrating mesh screen, and the second inclined plate is inclined downward from the second end of the first vibrating mesh screen and inclined toward the input end of the second inclined conveyor belt; the output end of the second inclined conveyor belt leads to the material tank located on the frame; a plurality of material tanks are arranged on the upper part of the frame, a weighing hopper is arranged below each material tank, a mixer is arranged below the weighing hopper, and a discharging hopper car located on the discharging track is arranged below the discharging port of the mixer; the frame includes a plurality of upright poles, a first platform and a second platform arranged on the poles, the second platform is higher than the first platform, the material tank is arranged in the channel of the second platform, a funnel is arranged on the first platform, the weighing hopper is fixed on the frame of the first platform, and the lower discharging port of the weighing hopper is opposite to the upper opening of the funnel; a material guide channel is arranged at the lower part of the material tank, and the lower outlet of the material guide channel is opposite to the upper opening of the weighing hopper.

7. The civil engineering laboratory specimen production and testing device according to claim 6, characterized in that: The concrete dividing and mixing device comprises a frame, a plurality of material tanks are arranged on the upper part of the frame, a weighing hopper is arranged under each material tank, a mixer is arranged under the weighing hopper, and a discharge hopper vehicle located on a discharge track is arranged under the discharge port of the mixer; the frame comprises a plurality of upright poles, a first platform and a second platform arranged on the poles, the second platform is higher than the first platform, the material tank is arranged in a channel of the second platform, a funnel is arranged on the first platform, the weighing hopper is fixed on the frame of the first platform, and the lower discharge port of the weighing hopper is Directly facing the upper opening of the funnel; a material guide channel is provided at the lower part of the material tank, and the lower outlet of the material guide channel is directly facing the upper opening of the weighing hopper; the material tank is used to contain various ingredients of civil engineering test concrete, and the material tank is cylindrical in shape, and a control valve is provided at the lower part, and each control valve is connected with a material guide channel, and the lower outlet of the material guide channel is directly facing the upper opening of the corresponding weighing hopper; weighing sensors are provided between the first platform, the second platform and the material tank and the weighing hopper to realize weighing, and the weighing sensors of the material tank and the weighing hopper are C3 and C6 grades respectively.

8. The civil engineering laboratory specimen production and testing device according to claim 1, characterized in that: The mixer cleaning device includes a linear guide rail located on the side of the mixer and a guide seat that can move along the linear guide rail, a lifting platform is provided above the guide seat, a rotatable high-pressure water gun with a nozzle located at the opening above the mixer, a water tank and a water pump for transporting water in the water tank to the high-pressure water gun are provided above the lifting platform; the high-pressure water gun includes a high-pressure water pipe in a curved or bent shape, a high-pressure nozzle located above the mixer is provided at the upper end of the high-pressure water pipe, and high-pressure nozzles are provided on the surrounding side and bottom of the high-pressure nozzle; a support shaft is provided at the bottom of the high-pressure water pipe, a bearing for the support shaft to pass through is provided in the lifting platform, and a motor for driving the support shaft to rotate is provided inside the lifting platform; the high-pressure water pipe and the water pump are connected by a hose; a cylinder for driving the lifting platform to move up and down is provided inside the guide seat, and a guide column is also provided between the lifting platform and the guide seat.

9. The working method of the specimen production and testing device for a civil engineering laboratory is characterized in that: The civil engineering laboratory specimen production and testing device as claimed in claim 8 includes the following working steps: (1) the material cleaning and drying device is started, the material to be processed is input into the first end of the first vibrating mesh screen, and is transported from the first end to the second end thereof as the first vibrating mesh screen vibrates. During the transportation process, the first vibrating mesh screen is washed by the upper and lower washing heads, thereby washing the gravel and sand on the first vibrating mesh screen, so that the soil attached to the gravel and sand can be removed, which is beneficial to ensure the accuracy of subsequent tests; at the same time, when the gravel or sand is transported to the first vibrating mesh screen, the material to be processed is transported from the first end to the second end thereof. When the second end of the vibrating screen is moved, the hot air nozzle blows hot air to the gravel or sand on the first vibrating screen, which is beneficial to drying the gravel or sand and reducing the moisture content therein; (2) The concrete dividing and mixing device is started: each material is sent to each material tank, and each material tank introduces the material required for the corresponding test into the weighing hopper below through a valve. After the weighing of each weighing hopper meets the requirements, it is controlled by a valve to introduce the material into the mixer below for mixing, and then output from the mixer outlet after mixing; (3) The cement pumping mold device and the pouring device above the vibrating table of the civil engineering laboratory work, and the temporary storage tank A visual camera is fixed on the mold. By making marks on the mold, the height of the poured concrete can be fed back on the visual camera, so that the output concrete volume can be controlled by using a battery valve or a negative pressure pump; (4) The mixed concrete is introduced into the mold, and the material is evenly filled under the drive of the vibrating motor. The clamp clamps the film conveying roller between the two clamping plates, and then the two clamping plates are locked by bolts; (5) The bracket electric cylinder drives the two vertical brackets to move synchronously. Then, during the movement of the vertical bracket, in the initial state, the lower edge of the pressure roller is lower than the concrete surface to be smoothed, and then the bracket electric cylinder drives the two vertical brackets to move synchronously. The cylinder drives the vertical bracket to move, thereby driving the swing arm, the pressure roller and the clamp to move together. When the pressure roller contacts the mold, the mold itself is fixed on the upper support platform, and then is passively swung upward by the mold, then bypasses the upper edge of the mold, and then continues to move horizontally under the action of the bracket electric cylinder. The pressure roller is pressed on the concrete surface in the mold by gravity and rolls to form a plane; (6) Since the clamp is fixed on the swing arm and is located on the rear side of the pressure roller, during the movement of the vertical bracket, the swing arm drags the clamp to drag a film to cover the concrete surface in the mold after the pressure roller is pressed, and then the film can be cut off;(7) When it is necessary to insert a steel mesh, before the concrete is introduced into the mold, a steel bar bundling device is used to place steel bars in the steel bar feed hopper along the axis of the steel bar output roller. As the steel bar output roller rotates, when it encounters the groove of the steel bar output roller, the steel bar will fall into the groove. The depth of the groove of the steel bar output roller can only accommodate one steel bar. As the steel bar output roller rotates, when the groove is exposed from the feed port below the steel bar feed hopper, it will directly fall to the bottom. At this time, as the sliding seat electric cylinder moves, the rectangular frame moves in a direction parallel to the axis of the steel bar output roller, and the steel bars falling from the feed port fall into each steel bar fixing seat in the same row one by one. After the steel bars in the same row fall into place, the frame motor rotates, and it can continue to build a steel bar layout perpendicular to the previously placed steel bars in the same direction to complete the steel bar layout. Then, the cross-sectional and longitudinal staggered steel bars are tied at the intersection to complete the manufacture of the steel mesh. Then, the completed steel mesh is placed in the mold to be poured through a mechanical device and left to stand. The test piece is made; (8) After the test piece is made, the test piece is sent to the test piece positioning seat of the test equipment by the manipulator; (9) The lower hydraulic lifting seat supporting the test piece positioning seat in the test equipment is lifted, and after the test piece is initially pressed by the upper hydraulic lifting seat and the lower hydraulic lifting seat in the test equipment, the manipulator is separated; (10) The displacement meter moving device in the test equipment is adjusted to make the contact of the displacement meter contact the surface of the test piece; the displacement meter moving device has three groups of displacement meters that can be adjusted in three axes, and the contact points of the three groups of displacement meters are respectively aligned with the positions of one quarter, one half and three quarters of the total height in the same vertical plane of the test piece; (11) The upper hydraulic lifting seat in the test equipment starts the continuous downward pressure test; (12) During the continuous downward pressure of the upper hydraulic lifting seat, the contact points of the three groups of displacement meters are also lowered, and the lowering values ​​of the three contact points from bottom to top are one quarter, one half and three quarters of the lowering values ​​of the upper hydraulic lifting seat, and at the same time, it is ensured that the three contact points are in contact with the surface of the test piece. ;

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