CN207752009U - A kind of cement concrete slump full-automatic testing instrument - Google Patents

Abstract

The utility model relates to a fully automatic slump tester for cement concrete, which comprises an environmental chamber, and a slump cylinder, a scraping device and a plugging and tamping device arranged sequentially in the environmental chamber from bottom to top, and the slump cylinder is connected to Vertical traction device; the scraping device is provided with a through hole that can communicate with the upper end of the slump cylinder, and the scraping device is connected to the horizontal traction device; Connect the lifting device; the top of the slump cylinder is also provided with a feeding device for feeding the slump cylinder; the vertical traction device, the horizontal traction device and the lifting device are respectively connected to the power device, and the power device is connected to the controller; Measuring devices for obtaining the slump of cement concrete are also installed. The utility model can ensure the accuracy of test results, realize automatic operation, have good test continuity and good accuracy and authenticity of measurement results.

Description

A fully automatic tester for cement concrete slump

technical field

The utility model relates to the field of concrete detection equipment, in particular to a cement concrete slump automatic tester.

Background technique

Slump is an important property of cement concrete, which directly affects the plasticizing performance and pumpability of cement concrete. The existing slump measuring instruments are mainly slump measuring cylinders, whose working principle is to put the cement concrete mixture into the standard conical slump cylinder according to the prescribed method, and lift the cylinder vertically upwards after filling and scraping. , move aside. The cement concrete mixture will slump due to its own weight. Then measure the height of the downward slump, which is the slump.

However, such a slump measuring cylinder has the following problems: the plane on which the bottom plate is placed is required to be horizontal, solid and non-absorbent, and such a bottom plate lacks identification or uniqueness, especially in construction sites under various construction environments and conditions , there are differences in the plane requirements of the bottom plate placed in the site selected for the in-situ test, and the randomness is large. Compared with the operating manpower, time and test results consumed by the indoor test and the construction site test, the difference will be greater.

At present, the Chinese patent whose publication number is CN2515677 U discloses a kind of cement concrete measuring device, which comprises a cylinder body, a bottom plate and a measuring device. In the device, the test body and the measuring device are relatively fixed, and the measurement accuracy is high. The device has the following deficiencies: the slump cylinder is not restrained when it is lifted upwards, and it is easy to shake, and the phenomenon of partial lifting will occur during operation, and the verticality cannot be guaranteed; the slump cylinder is easy to shake during the insertion and tamping process, which affects the accuracy of measurement.

The Chinese patent with the publication number CN 2046027 U discloses a slump cylinder cleaning device, which solves the problem that after the concrete slump is detected, the inner and outer surfaces of the slump cylinder adhere to the cement mortar layer in the concrete. Concrete slurry flows across, making it difficult to clean the ground, or it is directly discharged into the sewer, which is easy to cause blockage.

The above-mentioned device for measuring slump in the field of concrete preparation still has the following disadvantages and deficiencies: first, manual charging, inserting and pounding operations are more labor-intensive and time-consuming, and the fluidity of freshly mixed concrete has a certain influence, and It is difficult to control the uniformity of the concrete after tamping; second, after lifting the slump cylinder, use a meter ruler to measure, due to the visual reading of the line of sight, resulting in large errors; third, the entire experimental process is difficult to complete by one person, and the continuity of the experiment is poor , the time is difficult to control, which affects the accuracy and authenticity of the measurement results; fourth, the measurement process does not consider the influence of temperature, humidity and wind speed and other conditions on different construction sites on the experimental results.

Contents of the invention

The purpose of the utility model is to overcome the problems existing in the prior art, and to provide a cement concrete slump automatic tester, which can automatically complete the slump measurement.

In order to achieve the above object, the utility model adopts the following technical solutions:

Including the environment box, and the slump cylinder, the scraping device and the inserting and tamping device arranged sequentially in the environment box from bottom to top, the slump cylinder is connected with the vertical traction device; The upper end of the cylinder is connected to the through hole, and the scraping device is connected to the horizontal traction device; the lower end of the insertion and tamping device can be extended into the slump cylinder, and the upper end of the insertion and tamping device is connected to the lifting device; The feeding device for feeding the slump cylinder; the vertical traction device, the horizontal traction device and the lifting device are respectively connected to the power device, and the power device is connected to the controller; a measuring device for obtaining the slump of cement concrete is also installed in the environmental chamber.

Further, a bracket is provided outside the slump cylinder.

Further, the bracket includes two sets of vertical guide rails, and the vertical traction device includes two horizontal H-shaped rods connected to the outside of the slump cylinder at one end, and the other ends of the H-shaped rods are connected to the vertical guide rails through the first slider, The first slider is connected to the power device through a traction transmission mechanism.

Further, the bracket includes two sets of horizontal guide rails; the scraping device includes a rectangular plate, and a through hole connected with the upper end of the slump cylinder is provided in the center of the rectangular plate; The other end of the rod is connected to the horizontal guide rail through the second slider, and the second slider is connected to the power device through the rack and pinion transmission mechanism; the rectangular plate can slide to completely break away from the slump cylinder.

Further, the upper side of the rectangular plate is connected with a charging funnel communicating with the through hole; the feeding device is connected with the inclined guide groove, and the lower end of the inclined guide groove extends above the charging funnel.

Further, the bracket includes a top baffle; the lifting device includes a vertical guide rod passing through the top baffle, the lower end of the vertical guide rod is connected to the inserting and tamping device, and the upper end is connected to the power device through a traction transmission mechanism.

Further, the inserting and tampering device includes a circular plate connected to the lower end of the lifting device, and several vibrating rods are uniformly arranged on the bottom of the circular plate, and the vibrating rods are connected to a vibrating motor, and the vibrating motor is connected to a vibration controller; the diameter of the circular plate Smaller than the diameter of the through hole on the leveling device.

Further, the feeding device includes a storage bin installed on the top of the environmental box, the storage bin is divided into three units, each unit is provided with a material inlet and a material outlet, and each outlet is equipped with a feeding baffle ; The capacities of the three units of the storage bin are V1, V2 and V3 respectively, wherein V1 is equal to the volume from the bottom of the slump cylinder to 1/3 of the height, and V2 is equal to the volume from 1/3 of the slump cylinder to the height of 2 The volume between the /3 heights is equal, and V3 is 1.05 to 1.2 times the volume from the 2/3 height of the slump cylinder to the top surface of the cylinder.

Further, the measuring device includes a vertical pole fixed at the bottom of the environmental chamber, and a horizontal pole sheathed on the vertical pole, and an ultrasonic probe is installed on the horizontal pole.

Further, a temperature, humidity and wind speed control system is installed in the environmental chamber; the slump cylinder is placed on the platform base, and the platform base is fixedly connected to the bottom of the environmental chamber.

Compared with the prior art, the utility model has the following beneficial technical effects:

The utility model adopts an environmental chamber to simulate the construction site environment to test the slump of cement concrete. The test process is simple and easy, and the measurement result is accurate; After the device is completed, the concrete is uniform after insertion and tamping, and the operation can be completed by one person, which not only saves manpower, but also effectively saves test time, and can ensure the accuracy of test results, realize automatic operation, good test continuity, and controllable time. The accuracy and authenticity of the measurement results are good.

Furthermore, the utility model can fix the test device by setting the vertical guide rail, and can realize the automatic lifting of the slump cylinder under the action of the power device and the controller.

Furthermore, the utility model can realize the automation of the scraping operation by setting the horizontal guide rail; by setting the rectangular plate, it can ensure the smoothness of the concrete surface after scraping, reduce human error, and save manpower.

Further, the utility model can feed materials better by setting the charging funnel.

Further, the utility model can improve the vibrating efficiency and ensure the uniformity of the concrete after vibrating by setting the vibration controller and the vibrating rod.

Furthermore, the utility model divides the storage bin into three units, which is beneficial to making samples more uniformly, and the uniformity of the concrete after insertion and tamping is good, which is beneficial to obtaining more accurate test results.

Furthermore, the utility model reads the slump of cement concrete through an ultrasonic probe, which reduces measurement errors.

Further, the utility model simulates the effect of temperature, humidity and wind on the construction site by setting the temperature, humidity and wind speed control system, and conducts the cement concrete slump test under the coupling effect of the three fields. The test process is simple and easy, and the measurement result is accurate , and the test results are closer to the actual engineering situation.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the utility model.

Fig. 2 is a partially enlarged view of the utility model.

Among them: 1 is the environmental chamber; 2 is the platform base; 3 is the slump cylinder; 4 is the vertical benchmark; 5 is the H-shaped bar; 6 is the vertical guide rail; 7 is the rectangular plate; rod; 10 is a charging funnel; 11 is a vertical guide rod; 12 is a bolt ring; 13 is a bolt fixing rod; 14 is a top baffle; 15 is a power device; 16 is a circular plate; 17 is a vibration controller; 18 19 is the first slider; 20 is the second slider; 21 is the temperature and humidity and wind speed controller; 22 is the control panel; 23 is the control button; 24 is the horizontal benchmark; 25 is the inlet; 26 27 is a discharge opening; 28 is a feeding baffle; 29 is a storage bin; 30 is an inclined guide groove; 31 is a fixing bolt.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Referring to FIG. 1 and FIG. 2 , the utility model includes an environmental chamber 1 , a test device and a control panel 22 . The test device includes a platform base 2, a slump cylinder 3, a material storage device (feeding device), an inserting and pounding device, a scraping device, a measuring device and a power device. The platform base 2 is fixedly connected with the bottom of the environmental box 1 .

The environmental box 1 is a temperature, humidity and wind speed curing box, which can set the temperature, humidity and wind speed at the same time. The working principle of the environmental box is to adjust the temperature and humidity inside the environmental box through the installed temperature and humidity controller to simulate different constructions. The temperature and humidity of the concrete on site. Specifically, a temperature, humidity and wind speed control system is set in the environment box 1, the temperature, humidity and wind speed control system includes a temperature, humidity and wind speed controller 21, and a blower or a small fan connected to the wind speed controller, and the blower or a small fan is used to simulate atmospheric flow effect on concrete. The temperature controller and the humidity controller in the environmental box 1 are installed outside the environmental box 1, and each controller requires an external power supply.

In the environmental chamber 1, the slump cylinder 3, the scraping device and the inserting and tamping device are arranged sequentially from bottom to top; the slump cylinder 3 is placed on the platform base 2, and the slump cylinder 3 is connected to the vertical traction device; The device is provided with a through hole that can communicate with the upper end of the slump cylinder 3, and the scraping device is connected to the horizontal traction device; the lower end of the insertion and tamping device can extend into the slump cylinder 3, and the upper end of the insertion and tamping device is connected to the lifting device; The top of the slump cylinder 3 is also provided with a feeding device for feeding the slump cylinder 3; the vertical traction device, the horizontal traction device and the lifting device are all connected to the power unit 15, and the power unit 15 is connected to the controller; the environmental box 1 A measuring device for obtaining the slump of cement concrete is also installed inside.

The outside of the slump cylinder 3 is provided with a bracket, which includes two sets of vertical guide rails 6 , two sets of horizontal guide rails 8 and a top baffle 14 . The vertical guide rails 6 are symmetrically arranged on both sides of the slump cylinder 3, and are fixed on the platform base 2 by fixing bolts 31; the horizontal guide rails 8 are arranged in the middle of the vertical guide rails 6 and extend to the outside of the vertical guide rails 6; Baffle plate 14 is installed on vertical guide rail 6 tops. Top surface baffle plate 14 is the rectangular plate that has transverse chute in the middle, and the length and width of this rectangular plate are equal to the outer distance between each vertical guide rail.

The vertical traction device includes two horizontal H-shaped rods 5 connected to the 1/2 position of the outer height of the slump cylinder 3 at one end, and the other ends of the H-shaped rods 5 are connected to the vertical guide rail 6 through the first slider 19, A motor is installed on the vertical guide rail 6, and the first slider 19 is connected to the motor through a traction transmission mechanism, and the motor and the traction transmission mechanism drive the first slider 19 to move up and down along the vertical guide rail 6, thereby driving the slump cylinder 3 Move up and down.

The scraping device comprises a rectangular plate 7, and the through hole connected to the upper end of the slump cylinder 3 is a round hole and is opened at the center of the rectangular plate 7; both sides of the rectangular plate 7 are respectively connected to one end of a horizontal connecting rod 9, and the horizontal connecting rod The other end of 9 is connected to the horizontal guide rail 8 through the second slider 20; a motor is installed on one end of the horizontal guide rail 8, and the second slider 20 is connected to the motor through the rack and pinion transmission mechanism, and the second slider is driven by the motor and the rack and pinion transmission mechanism 20 moves back and forth along the horizontal guide rail 8, thereby driving the rectangular plate 7 to move forward and backward; Outwardly extending a certain distance, so that the rectangular plate 7 can slide to break away from the slump cylinder 3 completely.

The lifting device includes a vertical guide rod 11 passing through the top baffle plate 14. The lower end of the vertical guide rod 11 is connected to the inserting and tamping device, and the upper end passes through the transverse chute of the top baffle plate 14 and is connected to the power unit 15 through a traction transmission mechanism. The top of the vertical guide rod 11 is fixed on the inside of the power unit 15 and can move up and down under the action of the power unit 15 .

Inserting and pounding device comprises the circular plate 16 that is connected in vertical guide rod 11 lower ends, and the bottom of circular plate 16 is evenly provided with some vibrating rods 18, preferably nine, and vibrating rod 18 connects vibrating motor; The diameter is smaller than the through hole diameter on the scraping device. A vibration controller 17 is installed on the circular plate 16, and the vibration motor is connected with the vibration controller 17, and the vibration time can be set.

The feeding device includes a storage bin 26 fixedly installed on the top of the environmental box 1. The storage bin 26 is divided into three units, and each unit is provided with a material inlet 25 and a material outlet 27. The lower side of the material outlet 27 is provided with a material Storehouse 29, each discharge opening 27 places all install feeding baffle 28, during use, first fill up by feeding inlet 25, open feeding baffle 28 and let material enter filling bin 29 through discharge opening 27 and guide along the oblique direction Groove 30 flows out, and the capacity of three storage bin units is V1, V2 and V3 respectively, wherein V1 and the volume between the bottom of the slump cylinder and the height of 1/3 are equal, and V2 is equal to the volume between the slump cylinder 1/3-2/ The volumes between the heights 3 and 3 are equal, and V3 is 1.05 to 1.2 times the volume from the 2/3 height of the slump cylinder to the top surface of the cylinder, ensuring that the concrete can completely fill the slump cylinder 3 after the vibration is completed.

The upper side of the rectangular plate 7 is connected with a charging funnel 10 communicated with the through hole, the diameter of the round hole at the center of the rectangular plate 7 is the same as the bottom diameter of the charging funnel 10, and the rectangular plate 7 is welded together with the bottom of the funnel 10; Connect the inclined guide groove 30, the lower end guide groove opening of the inclined guide groove 30 passes through the transverse chute of the rectangular plate, and extends to the top of the charging funnel 10. The diameter of the circular plate 16 is slightly smaller than the diameter of the top surface of the charging funnel 10 .

The measuring device includes a vertical pole 4 fixed on the platform base 2 at the bottom of the environmental chamber 1, and a horizontal pole 24 set on the vertical pole 4. An ultrasonic probe is installed on the horizontal pole 24 to read the slump of cement concrete. The measuring device is arranged directly in front of the slump cylinder 3 .

The power unit 15 includes a lifting device, a motor on the vertical guide rail 6 and a horizontal guide rail 8, wherein the horizontal direction movement adopts a rack and pinion drive, and the vertical direction adopts a traction drive; the power unit 15 also includes and a vibrating rod 18 connected vibrating motors, the vibrating motors are used to drive the vibrating rod 18 to vibrate.

The test device is connected with a control circuit. There is a control panel 22 on one side of the environmental chamber 1, and a control switch 23 is provided on the control panel. The operation of the test device can be controlled through the control button, including feeding, inserting and pounding, scraping the concrete surface, and lifting the cylinder. and measurements.

The concrete operating process of the present utility model is:

Put the freshly mixed concrete into the storage bin, first let the concrete in the No. 1 storage bin enter the storage bin 29 through the discharge port 27, then put it into the charging funnel 10 through the inclined guide channel 30, and enter the slump level. Cylinder 3, start the lifting device in the insertion and tamping device, the circular plate 16 at the bottom of the vertical guide rod 11 drops to stop when it touches the surface of the slump cylinder 3, and then starts the vibration controller 17, and the vibrating rod 18 is inserted into the concrete. Driven by the vibrating motor, vibrate for 30s, then start the lifting device to raise the vibrating rod 18 to the surface of the slump cylinder 3, and load the materials in the No. 2 and No. 3 storage bins into the slump cylinder 3 in sequence according to the above method And vibrate; after the charging is completed, start the scraping device to scrape off the excess sample on the surface of the slump cylinder 3, specifically start the motor on the horizontal guide rail 8, and drive the connecting body between the charging funnel 10 and the rectangular plate 7 Move backward along the horizontal guide rail 8, scrape off the excess samples on the surface of the slump cylinder 3 and separate from the slump cylinder 3; then start the motor on the vertical guide rail 6 to drive the slump cylinder 3 to slide upwards, and finally start The measuring device measures the distance to the concrete surface through the ultrasonic probe, and obtains the slump value through the difference between the stored slump cylinder height and the value measured by the ultrasonic wave.

The utility model has the following advantages:

The utility model adopts an environmental chamber to simulate the temperature, humidity and wind of the construction site, and the test results are closer to the actual engineering conditions; the test operation process adopts programmed control, which can not only save manpower, but also effectively save test time, and can ensure that the test The accuracy of the results can be automated.

The utility model provides a fully automatic tester for cement concrete slump under the coupling action of three fields, which uses an environmental curing box to simulate the temperature, humidity and wind speed environment of the construction site, and controls the test operation process and data records through a controller. The process is simple and easy, the measurement result is accurate, and it is closer to the actual engineering situation.

Claims (10)

1. A cement concrete slump automatic tester is characterized in that: comprise environment chamber (1), and the slump cylinder (3) that is arranged successively from bottom to top in environment chamber (1), scraping device and inserting and tamping device, the slump cylinder (3) is connected with the vertical traction device; the scraping device is provided with a through hole that can communicate with the upper end of the slump cylinder (3), and the scraping device is connected with the horizontal traction device; The lower end of the tamping device can extend into the slump cylinder (3), and the upper end of the tamping device is connected to the lifting device; the top of the slump cylinder (3) is also provided with a feeding device for feeding the slump cylinder (3) The vertical traction device, the horizontal traction device and the lifting device are respectively connected to the power device, and the power device is connected to the controller; a measuring device for obtaining the slump of cement concrete is also installed in the environmental box (1). 2. A kind of cement concrete slump automatic tester according to claim 1, is characterized in that: the outside of slump cylinder (3) is provided with support. 3. A kind of cement concrete slump automatic tester according to claim 2, is characterized in that: support comprises two groups of vertical guide rails (6), and vertical traction device comprises one end and slump cylinder (3) Two horizontal H-shaped bars (5) connected to the outside, the other end of the H-shaped bar (5) is connected to the vertical guide rail (6) through the first slide block (19), and the first slide block (19) passes through the traction The transmission mechanism is connected with the power device. 4. A kind of cement concrete slump automatic tester according to claim 2, is characterized in that: support comprises two groups of horizontal guide rails (8); Scraping device comprises rectangular plate (7), and slump cylinder (3) The through hole connected to the upper end is opened in the center of the rectangular plate (7); the two sides of the rectangular plate (7) are respectively connected to one end of the horizontal connecting rod (9), and the other end of the horizontal connecting rod (9) passes through the second The slide block (20) is connected to the horizontal guide rail (8), and the second slide block (20) is connected to the power device through a rack and pinion transmission mechanism; the rectangular plate (7) can slide to completely break away from the slump cylinder (3). 5. A kind of cement concrete slump automatic tester according to claim 4, is characterized in that: the upper side of rectangular plate (7) is connected with the charging funnel (10) that communicates with its through hole; Inclined guide groove (30), the lower end of inclined guide groove (30) stretches to the charging funnel (10) top. 6. A kind of cement concrete slump automatic tester according to claim 2, is characterized in that: support comprises top surface baffle plate (14); Lifting device comprises the vertical guide that passes top surface baffle plate (14). Rod (11), the lower end of the vertical guide rod (11) is connected with the plugging device, and the upper end is connected with the power unit by the traction transmission mechanism. 7. A kind of cement concrete slump automatic tester according to claim 1, is characterized in that: inserting and pounding device comprises the circular plate (16) that is connected at the lower end of lifting device, the bottom of circular plate (16) Several vibrating rods (18) are evenly arranged, and the vibrating rods (18) are connected with a vibrating motor, and the vibrating motor is connected with a vibrating controller (17); the diameter of the circular plate (16) is less than the through hole diameter on the scraping device. 8. A kind of cement concrete slump automatic tester according to claim 1, is characterized in that: feeding device comprises the storage bin (26) that is installed on the environmental box (1) top, storage bin (26) Divided into three units, each unit is provided with a material inlet (25) and a material outlet (27), and each material outlet (27) is equipped with a feeding baffle (28); the storage bin (26) The capacities of the three units are V1, V2 and V3 respectively, where V1 is equal to the volume from the bottom of the slump cylinder (3) to 1/3 of the height, and V2 is equal to the 1/3 height of the slump cylinder (3) The volumes to the 2/3 height are equal, and V3 is 1.05 to 1.2 times the volume from the 2/3 height of the slump cylinder (3) to the top surface of the cylinder. 9. A kind of cement concrete slump fully automatic tester according to claim 1, is characterized in that: measuring device comprises the vertical mark post (4) that is fixed on the bottom of environmental box (1), and is enclosed within vertical mark post (4) ) on the horizontal pole (24), the horizontal pole (24) is equipped with an ultrasonic probe. 10. The fully automatic tester for cement concrete slump according to claim 1, characterized in that: temperature, humidity and wind speed control systems are set in the environmental chamber (1); the slump cylinder (3) is placed on the platform base On (2), the platform base (2) is fixedly connected to the bottom of the environmental chamber (1).