CN109016076B - Concrete individual particle aggregate feeding injector - Google Patents

Abstract

The invention provides a concrete single particle aggregate feeder injector, which belongs to the technical field of wet concrete injection test. The concrete single-particle aggregate feeding injector includes a particle injector and a feeding device. The feeding device takes out the single-particle aggregate from the hopper and puts it into the material trough. The air compressor provides high-pressure gas for the particle injector. The spray pipe sprays the single particle aggregate. The beneficial effects of the present invention: the concrete single-particle aggregate feeder injector of the present invention has a simple structure and low test cost; the concrete single-particle aggregate feeder injector of the present invention is applied to the wet concrete spraying test, which can conveniently Extracting single aggregate from concrete slurry and spraying single aggregate has high test efficiency and meets the requirements of wet concrete spray test.

Description

Concrete single particle aggregate feeder

technical field

The invention relates to the technical field of wet concrete spray test, in particular to a concrete single particle aggregate feeder.

Background technique

Wet concrete spraying technology is widely used around the world due to its high spraying efficiency, low cost and good quality. At the same time, the problem of spray rebound and the resulting dust is a long-term problem in wet concrete spray construction, which not only causes material loss and environmental pollution, but also reduces the strength of the concrete spray layer. In the composition of wet shotcrete materials, the aggregate accounts for about 3/4 of the total volume of the concrete, and the rebound of the concrete shot is mainly the collision between the aggregate and the surrounding rock and aggregate particles. Therefore, to study the rebound of shotcrete is to study the effect of concrete aggregate properties on the rebound of shotcrete, and to provide theoretical support for shotcrete bomb reduction and dust reduction technology. At present, the extraction of single aggregate from concrete is generally manual operation, and the single aggregate is taken out and then sprayed for test. The test operation is complicated and the efficiency is low, which cannot meet the requirements of wet concrete spraying test.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a concrete single-particle aggregate feeder injector, which can efficiently extract and spray single aggregate from concrete.

The invention provides a concrete single-particle aggregate feeding injector. The concrete single-particle aggregate feeding injector includes a particle injector and a feeding device; the particle injector includes an injector bracket and a first A driving device, a charging plate, an injection pipe and a travel switch. The first driving device drives the charging plate to reciprocate linearly. The upper surface of the charging plate is provided with a plurality of troughs at equal intervals. One end of the injection pipe is connected with a high-pressure air source. The other end of the injection pipe is located in the same horizontal position as the material trough. The two ends of the charging plate are provided with travel switches. The two ends of the ejector bracket are provided with electromagnetic coils that are inductive with the travel switches. The signal of the travel switches is connected to the control end of the first step motor. ; The feeding device includes a hopper, a second driving device, a stirring shaft, a feeding pipe, a feeding spoon and a discharging pipe. The hopper is arranged on the ejector bracket, and the second driving device drives the stirring shaft to rotate, and the radial direction of the stirring shaft, etc. A plurality of feeding pipes are arranged at intervals, and one end of the feeding pipe is provided with a feeding scoop. The feeding scoop is located in the space in the hopper. The hopper is provided with an inclinedly arranged transfer groove, and the other end of the feeding pipe is located above the transfer groove. The bottom of the trough is connected to one end of the discharge pipe, and the other end of the discharge pipe is located above the position of the linear reciprocating motion of the trough.

Further, the first driving device includes a first stepping motor and a gear, the lower surface of the charging plate is provided with a rack that meshes with the gear, and the first stepping motor drives the charging plate to reciprocate linearly through the gear and the rack. .

Further, the control terminal of the first step motor is a computer.

Further, the second driving device is a second stepping motor, one side of the hopper is provided with a second stepping motor, and the output shaft of the second stepping motor is coaxially connected to the stirring shaft to drive the stirring shaft to rotate.

Further, the high-pressure air source is an air compressor.

Further, the hopper is assembled on the ejector bracket through the hopper bracket.

Further, the concrete single-particle aggregate feeding injector also includes a base, the injector bracket is connected to the base through a horizontal alignment screw, and two mutually perpendicular horizontal adjustment rulers are arranged on the injector bracket.

Compared with the prior art, the concrete single particle aggregate feeder of the present invention has the following features and advantages:

The concrete single-particle aggregate feeder of the present invention has simple structure and low test cost input; the concrete single-particle aggregate feeder of the present invention is applied to the wet concrete spray test, and can be easily extracted from the concrete slurry Single aggregate and spraying single aggregate, the test efficiency is high, and it meets the requirements of wet concrete spray test.

The features and advantages of the present invention will become more apparent after reading the detailed description of the present invention in conjunction with the accompanying drawings.

Description of drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are For some embodiments of the present invention, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

Fig. 1 is the front view of concrete single particle aggregate feeding injector;

Figure 2 is a side view of a concrete single-grain aggregate feeder;

Among them, 201, injector bracket, 202, injection pipe, 203, charging plate, 204, gear, 205, travel switch, 206, material trough, 207, leveling ruler, 208, leveling screw, 209, base, 211 , hopper, 212, stirring shaft, 213, feeding spoon, 214, discharge pipe, 215, hopper bracket, 216, feeding pipe, 217, transfer tank, 301, first step motor, 302, second step motor.

Detailed ways

As shown in FIG. 1 and FIG. 2 , this embodiment provides a concrete single-particle aggregate feeding injector, and the concrete single-particle aggregate feeding injector includes a particle injector and a feeding device.

The particle injector includes an injector bracket 201 and a base 209 . The injector bracket 201 is connected to the base 209 via a horizontal alignment screw 208 , and two horizontal adjustment rulers 207 that are perpendicular to each other are provided on the injector bracket 201 . The injector bracket 201 can be leveled by looking at the leveling ruler 207 and adjusting the leveling screw 208.

The injector bracket 201 is provided with a first drive device, a loading plate 203 , an injector pipe 202 and a travel switch 205 . The first driving device includes a first step motor 301 and a gear 204 , a rack is provided on the lower surface of the loading plate 203 , and the rack is engaged with the gear 204 . The first step motor 301 drives the loading plate 203 to reciprocate linearly through the gear 204 and the rack.

The upper surface of the charging plate 203 is provided with a plurality of feeding troughs 206 at equal intervals, and the feeding troughs 206 are used to hold single-particle aggregates. One end of the injection pipe 202 is connected to a high-pressure air source. The high-pressure air source in this embodiment is an air compressor, and the air compressor provides high-pressure air for one end of the injection pipe 202 . The other end of the injection pipe 202 is located at the same horizontal position as the material trough 206 . The high-pressure air ejected from the other end of the ejection pipe 202 ejects the single-particle aggregate in the trough 206 . Limit switches 205 are arranged at both ends of the loading plate 203 , and electromagnetic coils are arranged at both ends of the injector bracket 201 , and the electromagnetic coils are inductive with the travel switches 205 . The signal of the travel switch 205 is connected to the control end of the first step motor 301 . In this embodiment, the control end of the first step motor 301 is a computer. When the limit switch 205 senses the electromagnetic coil, the limit switch 205 transmits a reverse rotation signal to the control terminal of the first stepping motor 301 to control the first stepping motor 301 to rotate in the reverse direction.

The feeding device includes a hopper 211 , a second driving device, a stirring shaft 212 , a feeding pipe 216 , a feeding spoon 213 and a discharging pipe 214 . A hopper 211 is mounted on the ejector bracket 201 via a hopper bracket 215 . The second driving device is a second stepping motor 302 . A second stepping motor 302 is provided on one side of the hopper 211 , and the output shaft of the second stepping motor 302 is coaxially connected to the stirring shaft 212 to drive the stirring shaft 212 to rotate.

A plurality of feed pipes 216 are arranged at equal intervals in the radial direction of the stirring shaft 212 , and a feed scoop 213 is arranged at one end of the feed pipes 216 . The feeding scoop 213 is located in the space in the hopper 211. The hopper 211 is provided with a transfer groove 217 arranged in an inclined manner. The other end of the feeding pipe 216 is located above the transfer groove 217. The other end of the discharge pipe 214 is located above the linear reciprocating position of the material chute 206 . The second stepping motor 302 drives the stirring shaft 212 to rotate, and the feeding scoop 213 picks up the single particle aggregate in the hopper 211 . The linear reciprocating frequency of the charging rack 203 and the rotation frequency of the stirring shaft 212 have a synchronous multiple relationship.

The concrete single-particle aggregate feeding injector of this embodiment has a simple structure and low test cost. The concrete single-particle aggregate feeding injector of this embodiment is applied to the wet concrete spraying test, and the single aggregate can be easily extracted from the concrete slurry in the hopper 211 through the feeding scoop 213, and the single aggregate can be placed In the material trough 206, high-pressure air is provided by a high-pressure air source to be ejected from the injection pipe 202, and the high-pressure air ejected from the injection pipe 202 drives the single aggregate in the material tank 206 to be ejected, and the ejected single aggregate is ejected toward the receiver. For the sprayed panel, the single aggregate rebounds on the sprayed panel or adheres to the sprayed panel. The high-speed camera is directed towards the injection direction of the single-particle aggregate and the rebound direction of the single-particle aggregate injected to the sprayed panel, and the high-speed camera shoots the injection and rebound of the single-particle aggregate. The computer is connected to the high-speed camera through the signal cable signal to read the shooting data of the high-speed camera, and the initial speed V ₀ of the single-particle aggregate ejected, the rebound speed V from the sprayed panel, and the single-particle aggregate can be calculated from the shooting data. , to determine the energy loss of single-particle aggregate from ejection to rebound.

Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by those skilled in the art within the essential scope of the present invention should also belong to the present invention. the scope of protection of the invention.

Claims (7)

1. a concrete single particle aggregate feeder injector is characterized in that: the concrete single particle aggregate feeder injector comprises a particle injector and a feeding device; the particle injector comprises an injector support and is arranged on the injector support The first driving device, the charging plate, the injection pipe and the travel switch, the first driving device drives the charging plate to reciprocate in a straight line, the upper surface of the charging plate is provided with a plurality of troughs at equal intervals, and one end of the injection pipe is connected with a high pressure Air source, the other end of the injection pipe is in the same horizontal position as the material trough, the two ends of the charging plate are provided with travel switches, the two ends of the ejector bracket are provided with electromagnetic coils that are inductive with the travel switches, and the signal of the travel switches is connected to the first step motor When the travel switch senses the electromagnetic coil, the travel switch transmits a reverse rotation signal to the control end of the first step motor to control the reverse rotation of the first step motor; the feeding device includes a hopper, a second drive device, stirring shaft, feeding pipe, feeding spoon and discharging pipe, the hopper is arranged on the ejector bracket, the second driving device drives the stirring shaft to rotate, and the radial direction of the stirring shaft is provided with a plurality of feeding pipes at equal intervals. One end of the pipe is provided with a feeding scoop, which is located in the space in the hopper. The hopper is provided with an inclined transfer groove. The other end of the feeding pipe is located above the transfer groove, and the bottom of the transfer groove is connected to one end of the discharge pipe. The other end of the discharge pipe is located above the linear reciprocating position of the trough. 2 . The single-particle aggregate feeder for concrete according to claim 1 , wherein the first driving device comprises a first stepping motor and a gear, and the lower surface of the charging plate is provided with a gear meshing with the gear. 3 . Rack, the first step motor drives the loading plate to reciprocate linearly through the gear and rack. 3. The concrete single-particle aggregate feeding injector according to claim 1, characterized in that: the control end of the first step motor is a computer. 4. The concrete single-particle aggregate feeding injector according to claim 1, wherein the second driving device is a second stepping motor, a second stepping motor is provided on one side of the hopper, and the second stepping motor is The output shaft is coaxially connected to the stirring shaft to drive the stirring shaft to rotate. 5 . The concrete single-particle aggregate feeder according to claim 1 , wherein the high-pressure air source is an air compressor. 6 . 6. The concrete single-particle aggregate feeding injector according to claim 1, wherein the hopper is assembled on the injector bracket through the hopper bracket. 7. The concrete single-grain aggregate feeding injector according to claim 1, characterized in that: the concrete single-grain aggregate feeding injector further comprises a base, the injector bracket is connected to the base through a horizontal alignment screw, and the injector bracket is There are two horizontal adjustment rulers that are perpendicular to each other.