JPH0774545B2 - Concrete spraying equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to a concrete spraying device mainly applied to tunnel winding and slope lining.

[Conventional technology and its problems]

Wet spraying machine and quick-setting agent feeder are used as means for lining concrete by spraying on tunnels, tunnels, slopes, etc., from which concrete material and quick-setting agent are separately sent, and upstream of the spray nozzle. A system for merging, mixing, and spraying is known, and a system in which a spray nozzle is robotized so that a position can be freely advanced, retracted, raised, and rotated with respect to a construction surface by an arm or an actuator is also known.

However, in the conventional system of this type, there is no special relation between the concrete material discharged from the wet spraying machine and the amount of the quick-setting agent added to the concrete material from the quick-setting agent feeder, and the target mixing ratio is Accordingly, at the start of the operation, the control is performed only to set the drive amounts of the actuators of the wet spray machine and the quick-setting agent supply machine, for example, the spindle rotation speed.

However, in actual construction, due to various disturbances such as fluctuations in operating sources such as voltage and hydraulic pressure, fluctuations in the wet spray machine side such as wear of machine elements, changes in the material side such as mixing, water, cement ratio, etc. The discharge amount of is constantly changing. For this reason, even if the set amount of the quick setting agent is supplied from the quick setting agent feeder, there is a variation such that an unnecessarily large amount of the quick setting agent is added to the concrete material, or conversely, the amount of the quick setting agent is insufficient. Occurs, and there is a problem that a uniform and high quality lining layer cannot be obtained, and it is necessary to constantly adjust the drive based on experience and intuition by seeing the situation where personnel are stuck to the quick-setting agent feeder and sprayed. However, there was a problem that the workability was complicated and deteriorated. In addition, from the viewpoint of quality control, a large amount of quick-setting admixture is added in anticipation of variations in the discharge of concrete materials, which not only leads to cost increase, but also causes the work environment to deteriorate due to the scattering of toxic quick-setting admixture. There was a problem.

[Means for solving problems]

The present invention was made by researching to solve the above problems, and its basic purpose is to provide a concrete with a relatively simple structure regardless of fluctuations in the discharge of concrete from a wet spraying machine. The purpose is to automatically form a uniform and high-quality lining layer with an appropriate ratio of material and quick-setting agent.

In order to achieve the above object, the present invention provides a wet press pump for concrete material, a quick-setting agent supply device for adding a quick-setting agent to the concrete material discharged from the wet press pump, and a mixed material. Means of spraying on the construction surface,
And a quick-setting agent synchronization control device that controls the driving of the quick-setting agent supply device so as to automatically synchronize the amount of the quick-setting agent added with the concrete material per unit amount that is pressure-fed from the wet press pump. The quick-setting admixture tuning control device has the following configuration.

i: A concrete material flow rate detector that is provided in the discharge system of the wet pressure feed pump and detects the concrete material flow rate discharged from the wet pressure feed pump per unit time; ii: Detects the discharge flow rate of the quick setting agent per unit time A quick-setting admixture flow detector, iii: a setter for setting the desired addition amount of the quick-setting admixture to the concrete material, the addition amount signal from this setter, the detection signal from the concrete material flow rate detector, and concrete unit cement A calculator for calculating an appropriate quick-mixture flow rate from the amount signal, a comparator for detecting a deviation between the appropriate quick-mixture flow rate signal and a signal from the quick-mixture flow rate detector, and a comparator for detecting the deviation. A control circuit equipped with a driver that sends the drive amount signal to the drive unit of the quick-mixture supply device. Another object of the present invention is to provide, in addition to the above, a spraying device capable of automatically forming a proper accelerating agent-added lining layer that immediately corresponds to the quality (strength, etc.) required for each construction site such as a ceiling and a side wall. Especially.

In order to achieve this object, the present invention provides a wet pressurizing pump for concrete material, a quick-setting agent supply device for adding a quick-setting agent to the concrete material discharged from the wet-pressure pump, and a material mixed and conveyed. Means of spraying on the construction surface,
And a quick-setting agent synchronization control device that controls the driving of the quick-setting agent supply device so as to automatically synchronize the amount of the quick-setting agent added with the concrete material per unit amount that is pressure-fed from the wet press pump. The quick-setting admixture tuning control device has the following configuration.

i: A concrete material flow rate detector that is provided in the discharge system of the wet pressure feed pump and detects the concrete material flow rate X discharged from the wet pressure feed pump per unit time; ii: Detects the discharge flow rate of the quick-setting agent per unit time Iii: a quick-setting admixture flow rate detector, iii: a setter for setting desired quick-setting agent addition amount signals of a plurality of types of quick-setting admixture for concrete material based on the position signal from the nozzle position detection means, v: the setter An arithmetic unit for calculating an appropriate quick-setting admixture flow rate from a detection signal from the concrete material flow rate detector and a concrete unit cement amount signal on the basis of a desired addition amount signal from A comparator that detects the deviation from the signal from the agent flow rate detector,
A control circuit equipped with a driver that sends a drive amount signal corresponding to the deviation amount to the drive unit of the quick-mixture supply device.

〔Example〕

 Embodiments of the present invention will be described below with reference to the accompanying drawings.

1 and 2 show a first embodiment of the present invention,
Reference numeral 1 denotes a wet pressure feed pump for the concrete material A, 2 denotes a rigid pipe line connected to the discharge portion 20 of the wet pressure feed pump 1, which is made of a steel pipe or the like and is connected in multiple stages in series by joints.

The wet pressure pump 1 is a squeeze type, screw type,
It is optional such as piston type. In the illustrated example, a tank body 21 having a discharge portion 20 on the front wall and a tank body 21 provided on the back wall side of the tank body 21 are provided.
Two piston cylinders 22 and 22 'and one end of the discharge portion 20
Double-piston type having a cylindrical switching valve 25 operated by a swing arm 24 so that the other end is alternately connected to the suction / discharge ports 23, 23 'of the piston cylinders 22, 22'. I use the one.

Reference numeral 4 is a flexible conduit made of a rubber hose or the like, and a spray nozzle 5 is connected to the tip thereof. Reference numeral 6 denotes a compressed air addition portion which is connected to the boundary portion between the rigid pipeline 2 and the flexible pipeline 4 via an air pipeline 7 and an air supply source 8 such as a compressor.
Connected with.

Reference numeral 9 denotes a quick-setting admixture supply device, which has an arbitrary structure as long as it has a constant-quantity discharge performance, but in the illustrated example, it is rotatably provided by a tank 90 containing the quick-setting admixture B and a main shaft 94 on the inner bottom of the tank. And a rotor or feed wheel 91 in which pockets are arranged at intervals in the peripheral portion, and a discharge portion 92 communicating with the pockets.
And an air blowing nozzle 93 arranged near the discharge part 92.
Is used, and the main shaft 94 is adapted to be provided with a desired rotational speed or rotational speed by a continuously variable transmission motor or a servomotor 95.

The air blowing nozzle 93 is connected to the compressed air supply source 8 by an air pipe 7 ', and the discharge part 92 is connected to the blowing nozzle 5 by an addition hose 99 or a flexible pipe upstream thereof. 4 is connected to the addition nozzle 100 interveningly connected.

Reference numeral 10 is a quick-setting admixture tuning control device characterized by the present invention. This quick-set admixture tuning control device 10 comprises a telemeter type concrete material flow rate detector 11 provided at a part of the rigid conduit 2 of the wet pressure feed pump 1, preferably at a portion near the discharge part 20, and a quick-set admixture flow rate. The detector 12 and the concrete material flow rate detector 11 and the quick setting agent flow rate detector 12 electrically process the measurement signals to adjust the driving amount of the quick setting agent supply device 9 so as to correspond to the flow rate of the concrete material. And a control circuit 13 for adjusting.

First, the concrete material flow rate detector 11 has a function of converting the flow rate of the concrete material discharged from the pump into an electric signal, and in this embodiment, an electromagnetic flow meter, that is, an electromagnetic force perpendicular to the flow of the concrete material is applied. , A structure that measures the super power generated in proportion to the flow velocity is used. In addition to this, ultrasonic waves are emitted from the pipe wall by utilizing the fact that the difference in frequency is proportional to the flow velocity, and an ultrasonic flow meter for receiving on the upstream side or the downstream side, or by placing an impeller in the pipe, A tabine flowmeter that magnetically detects rotation may be used. In any case, the concrete material flow rate detector 11 is designed to calculate the concrete flow rate X per unit time by the converter 11 'which is integral with or separate from the concrete material flow rate detector 11.

Next, the quick setting agent flow rate detector 12 may be the same as the concrete material flow rate meter, but due to the use of compressed air as a carrier medium, instantaneous discharge from the change in the weight of the quick setting agent storage tank 90 accompanying the operation. It is configured to measure the quantity. That is, specifically, a load cell is used, and by disposing it in the frame 96 surrounding the storage tank 90, the storage tank
90 is supported so that the weighed electric signal is continuously taken out, and this weighed electric signal is processed by the converter 12 'to calculate the flow rate Q'per unit time.

The control circuit 13 stores, for example, a setting device 14 for inputting a desired addition amount (rate) Z of the quick-setting admixture to the concrete material as an electric signal and an addition ratio signal Z from the setting device 14 and this signal. And the concrete unit flow rate signal (variable) X from the converter 11 'of the concrete material flow rate detector 11 per unit time and the concrete unit cement amount signal (constant) Y from the indicator 15 to determine the proper quick setting agent flow rate. And a calculator 16 for calculating the appropriate quick-mixture flow rate signal Q and a quick-mixture actual flow rate signal Q'from the converter 12 'of the quick-mixture flow rate detector 12 for comparing and detecting the deviation. And a driver 18 for generating a drive amount signal according to the deviation amount from the deviation signal of the comparator 17 and sending the signal to the drive unit of the motor 95. The arithmetic unit
16 and the comparator 17 and the driver 18 may be configured as a microcomputer, which is also included in the present invention.

The concrete material flow rate detector 11 and its converter 11 'are respectively connected to a digital display 19 to display the concrete flow rate per unit time and the cumulative discharge amount, and the quick-setting admixture setting. The output side of the device 14 and the output sides of the quick-setting admixture flow rate detector 12 and the converter 12 'are also connected to the digital display 19, respectively, and the set addition rate of the quick-setting admixture, the flow rate per unit time and the cumulative addition amount are displayed. It is supposed to be displayed. Further, an air pressure signal is input to the digital display 19 from the pressure gauges of the air pipes 7, 7 ', and is displayed as a spray pressure. Further, the digital display 19 is connected to the printer 26 so that each of the above data can be recorded.

In the present invention, in order to perform the spraying in a stable condition as much as possible, the constant air flow rate control mechanism 27 is provided in the air pipes 7 and 7'connecting the compressed air supply source 8, the compressed air adding section 6, and the air blowing nozzle 93. Is incorporated. This air constant flow rate control mechanism 27
Is, for example, a constant flow control valve 28, 28 'having a pressure compensating valve on the secondary body and a variable flow rate setting valve on the primary body, and the main pressure on the upstream side. The pressure regulating valves 29 and 29 'are provided for absorbing the fluctuation of the above and causing the compressed air of a constant pressure to act on the flow rate constant value control valves 28 and 28'. Although not shown, a sensor for detecting pressure fluctuation may be incorporated on the downstream side of the constant flow rate control valve, and the signal from this may be used to operate the flow rate setting operation unit of the constant flow rate control valve toward the increasing or decreasing side.

In any case, when the constant flow rate control mechanism 27 is used together, a constant air flow rate is always automatically set by simply setting a desired value (for example, 13 Nm ³ / min, 6 kg / cm ² ). Since the pressure can be applied to the air addition unit 6 and the air blowing nozzle 93, and the stable material air-feeding state and the quantitative discharge of the quick-setting agent can be ensured, the features of the present invention can be fully exerted. Is.

FIG. 3 shows another embodiment of the present invention. In this embodiment, the quick-setting admixture is automatically synchronized in accordance with the amount of concrete material per unit and the position of the spray nozzle 5, and at least the nozzle position detecting means 3 and the position signal from this position are used. A setter 14 ′ for selectively inputting a plurality of types (for example, three types) of the quick-setting agent addition amount signals Z ₁ , Z ₂ and Z ₃ to the calculator 16. Since the other mechanism is the same as that of the above-mentioned embodiment, it is limited to the one indicated by the circumference code.

4 and 4a exemplify a spraying robot to which the embodiment is applied. Reference numeral 30 denotes a traveling body, which includes a front vehicle body 30a and a rear vehicle body 30b connected by a center hinge, and a rear vehicle body 30b. It is designed to be self-propelled by a traveling drive mechanism (not shown) mounted.

The wet pressurizing pump 1 is supported by a rear vehicle body 30b via a skid 31 so as to be able to come in contact with and separate from the ground. The quick-setting agent supply device 9 is provided on the upper side of the rear vehicle body 30b through the quick-setting agent flow rate detector 12 and is connected to the frame 9
Suspended by 5.

The spray nozzle 5 is configured as an automatic spray nozzle mechanism, and includes a swivel base 41 mounted on the front portion of the front vehicle body 30a, a main cylinder 42 pivotally mounted at the rear end thereof, and a main cylinder.
An elevation cylinder 43 having one end pivotally attached to the casing of 42 and the other end pivotally attached to the swivel 41, and a horizontal tubular guide frame 45 supported via an arm 44 at the tip of the piston rod of the main cylinder 42. A slide boom 46 penetrating the guide frame 45 so as to move back and forth is provided, and the guide frame 45 can be rotated in a direction perpendicular to the paper surface by a hydraulic cylinder 47 for swinging left and right.

A nozzle holder 51 is provided at the tip of the slide boom 46 via a casing 48 having a built-in turning motor, a swing bracket 49, and a circular motion bracket 50.
The spray nozzle 5 is held by the nozzle holder 51, and the spray nozzle 5 is swung 360 ° around the horizontal axis as shown by an arrow and swung by a required angle from the vertical by an actuator provided in each bracket. A slight circular motion is given.

The nozzle position detecting means 3 uses two limit switches 32a and 32b in the present embodiment, and these limit switches 32a and 32b are movable in the axial direction on a sleeve 33 provided in parallel with the lift cylinder 43. , And the contact portion projects into the sleeve 33. And sleeve 33
A rod 34 capable of contacting the contact portion is inserted in the
The tip of 34 is the piston rod 430 of the cylinder 43 for lying down
It is fixed to and is moved in the axial direction in conjunction with this.

The limit switches 32a and 32b and the setting device 14 'have a switch relationship as shown in Table 1 below.

The nozzle position detecting means 3 may use a proximity switch or a photoelectric tube. In the former case, the proximity switch is attached so as to face the piston rod of the elevation cylinder 43,
This can be achieved by attaching a magnetic piece near the tip of the piston rod.

In addition, reference numeral 52 in the drawing is a device panel, which incorporates the quick-setting admixture tuning control device, and on which the setting devices 14, 14 'and the digital display device 19 are arranged.

In addition, the wet pressurizing pump 1 and the quick-setting admixture supply device 9 are connected to the traveling body 30.
Of course, it may be mounted on another traveling body or trolley.

[Operation of Example]

The case of performing tunnel winding with the apparatus of FIGS. 3 and 4 will be described as an example. Prior to the work, a predetermined air amount is set in the constant flow rate control valves 28, 28 'of the air flow rate control mechanism 27, In addition, the amount of quick-setting admixture Z ₁ , Z ₂ , Z ₃ (for example, 4) suitable for the side wall, shoulder, and arch is provided on each setting part of the setting device 14 ′.
%, 5%, 6%), and the unit amount of cement is stored in the calculator 16 by the indicator 15.

In this state, the wet pressure pump 1 and the quick-setting agent supply device 9 are operated. As a result, the concrete material A is continuously discharged from the wet pressure pump 1 and is densely conveyed to the compressed air addition section 6 by the rigid pipe line 2. Then, the compressed amount of compressed air is added from the compressed air adding section 6 through the air pipe line 7, so that the concrete material A is given a buoyancy force and is conveyed through the flexible pipe line 4 at high speed. On the other hand, the quick-setting admixture B is continuously quantitatively transferred from the discharge part 92 to the addition nozzle 100 via the addition hose 99 by the rotation of the feed wheel 91 and the compressed air injected from the air injection nozzle 93 via the air pipe 7 '. Is added to the concrete material A which is being conveyed by the air flow from the addition nozzle 100, and is mixed and stirred to be sprayed from the spray nozzle 5.

When the spray nozzle 5 is located on the side wall 55 in the tunnel, the piston rod advancing stroke of the lying cylinder 43 is short, so the rod 34 is inserted deeply into the sleeve 33, and both limit switches 32a and 32b are turned on. The status signal of this limit switch is input to the setting device 14 ', so that the quick-setting agent addition amount signal Z ₁
Is kept in the calculator 16.

On the other hand, the discharge amount of the wet pressurizing pump 1 is detected by the concrete material flow rate detector 11, and the flow rate signal X per unit time (for example, per hour) is input to the calculator 16 and the quick-setting agent addition amount signal Z ₁ and An appropriate quick-setting admixture flow rate Q per unit time (for example, minutes) is calculated from the cement unit amount signal Y,
It is input to the comparator 17. At this time, at the same time, the actual quick-setting admixture flow rate detector 12 is measuring the actual quick-setting admixture flow rate, and the flow rate signal Q'per unit time is input to the comparator 17, and the deviation from the proper flow rate signal Q is obtained. If detected and if there is a deviation, a corresponding drive signal is generated by the driver 18, and a signal is sent to the drive unit of the motor 95 to increase or decrease the rotation speed of the main shaft 94 of the feed wheel 91. This makes it possible to add a quick-setting agent suitable for the characteristics required for the side wall portion, and also in accordance with the flow rate of the concrete material.

When the spray nozzle 5 moves from the side wall portion 55 to the shoulder portion 56, the nozzle position detector 3 detects this positional change, and the shoulder portion construction quick-setting agent is added to the calculator 16 via the setting device 14 '. Quantity signal
Z ₂ is input, an appropriate quick-mixture flow signal is calculated with this signal as a reference, compared with the actual quick-mixture flow signal by the comparator 17, and the drive amount of the motor 95 is increased via the driver 18, whereby Increase the supply of quick-setting agent. At the same time, the flow rate of the quick-setting admixture is corrected so as to be automatically synchronized with the change in the flow rate of the concrete material discharged from the wet pressure pump 1. This operation is the same when the spray nozzle 5 moves to the arch portion 57, and a lining layer having a high early strength and having a proper addition ratio to concrete is formed.

By merely detecting the position of the spray nozzle 5 and controlling the drive of the quick-setting admixture supply device 9 so as to respond thereto, an addition rate corresponding to the actual flow rate of the concrete material cannot be obtained, and the lining layer is also uniform. However, according to the present invention, it is possible to always synchronize with the flow rate of the concrete material and set the addition amount according to the flow rate. Therefore, the above problem does not occur.

In the case of the embodiment shown in FIG. 1, the setter 14 is manually operated, or a fixed program is set as a function of the spraying start position and time, so that the quick-mixing agent synchronizing spraying according to the spraying position is achieved. Can be attached.

〔The invention's effect〕

According to the first aspect of the present invention described above, in order to automatically synchronize the amount of the quick-setting admixture with the concrete material per unit amount pumped from the wet press pump, the quick-control admixer drive is controlled. Equipped with a binder tuning control device 10,
The quick-setting admixture synchronization control device 10 is provided in the discharge system of the wet-type pressure-feeding pump, detects the concrete-material flow rate X per unit time discharged from the wet-type pressure-feeding pump, and a unit of the quick-setting agent. Discharge flow rate per hour Q '
The quick-setting admixture flow rate detector 12 for detecting the setting amount, the setting device 14 for setting the desired addition amount of the quick-setting admixture to the concrete material, the addition amount signal Z from the setting device 14 and the concrete material flow rate detector 11 A calculator for calculating the proper quick-setting admixture flow rate Q from the detection signal X and concrete unit cement amount signal Y
16 and a comparator 17 for detecting a deviation between an appropriate quick-mixture flow rate signal Q and a signal Q'from the quick-linkage agent flow rate detector 12
And, since it has the control circuit 13 including the driver 18 that sends the drive amount signal according to the deviation amount to the drive unit of the quick-setting agent supply device, even if the flow rate of the concrete material varies variously due to disturbance. , It is possible to always automatically add and spray the quick-setting agent in the target ratio, and it is possible to form a uniform and high-quality lining layer and reduce the generation of dust, especially the amount of concrete and the amount of quick-setting agent. The control of the quick-setting admixture is simple and accurate because the amount of quick-setting admixture is increased / decreased only in response to changes in the amount of concrete per unit time and the concrete supply amount itself is not intentionally controlled to increase or decrease. In addition, since the appropriate amount of the quick-setting admixture is set in consideration of the unit cement amount, an excellent effect that the precise control of the quick-setting admixture can be performed in accordance with the actual situation is obtained.

Further, according to the second aspect of the present invention, the quick-setting admixture synchronization control device 10 is provided in the discharge system of the wet pressure feed pump and detects the concrete material flow rate X per unit time discharged from the wet pressure feed pump. Detector 11
, A quick-setting agent flow rate detector 12 for detecting the discharge flow rate Q'of the quick-setting agent per unit time, a nozzle position detecting means 3 for detecting the position of the spraying means, and a position from the nozzle position detecting means 3. desired quick-setting admixture amount signal Z ₁ of a plurality of types of quick-setting admixture for concrete material by the signal, Z _2, setter for setting a Z ₃
14 'and the desired addition signal Z ₁ , Z ₂ , Z ₃ from the setter 14'
Based on the above, the calculator 16 for calculating the proper quick-setting admixture flow rate Q from the detection signal X from the concrete material flow rate detector 11 and the concrete unit cement amount signal Y, and the proper quick-setting admixture flow rate signal Q and the quick connection A comparator 17 for detecting a deviation from the signal Q'from the agent flow rate detector 12, and a control circuit 13 provided with a driver 18 for sending a drive amount signal corresponding to the deviation amount to the drive unit of the quick-mixing agent supply device. As a result, it is possible to add a quick-setting agent in a ratio that always responds to both the amount of concrete material and the spraying position with a simple control configuration, and it is based on the slope of each section of the tunnel section and the slope. An excellent effect that a uniform and high-strength lining layer can be easily formed is obtained.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory view showing an embodiment of the present invention, FIG. 2 is a flow sheet of a quick-setting admixture tuning control device according to the present invention, and FIG. 3 is another embodiment of the present invention. 4 is a side view showing an example of a spraying robot to which the embodiment of FIG. 3 is applied,
FIG. 4a is a partially enlarged view of the same. DESCRIPTION OF SYMBOLS 1 ... Wet pressure feed pump, 3 ... Nozzle position detection means, 9 ... Rapid binder supply device, 10 ... Rapid binder synchronization control device. 11 ... Concrete material flow rate detector, 12 ... Rapid binder flow rate detector, 13 ... Control circuit, 14, 14 '... Setting device, 16 ... Arithmetic unit, 17 ... Comparator, 18
…driver

Claims (2)

[Claims] 1. A wet pressurizing pump for concrete material, a quick-setting admixture supplying device for adding a quick-setting admixture to the concrete material discharged from the wet pressurizing pump, and spraying a mixed and conveyed material on a construction surface. And means for controlling the driving of the quick-setting agent supply device so as to automatically synchronize the addition amount of the quick-setting agent with the concrete material per unit amount pumped from the wet press pump. The concrete spraying device, wherein the quick setting agent synchronization control device 10 has the following configuration. i: a concrete material flow rate detector 11 provided in the discharge system of the wet pressure feed pump and detecting the concrete material flow rate X discharged from the wet pressure feed pump per unit time; ii: the discharge flow rate signal of the quick-setting agent per unit time A quick-setting admixture flow rate detector 12 for detecting Q ', iii: a setting device 14 for setting a desired addition amount of the quick-setting admixture to the concrete material, an addition amount signal Z from the setting device 14 and the concrete material flow rate detection A calculator 16 for calculating an appropriate quick-setting admixture flow rate Q from a detection signal X from the container 11 and a concrete unit cement amount signal Y, an appropriate quick-setting admixture flow rate signal Q and a signal from the quick-setting admixture flow rate detector 12 A control circuit 13 comprising a comparator 17 for detecting a deviation from Q ', and a driver 18 for sending a driving amount signal corresponding to the deviation amount to a driving portion of the quick-mixture supplying device. 2. A wet pressurizing pump for concrete material, a quick-setting agent supply device for adding quick-setting agent to the concrete material discharged from the wet-pressure pump, and spraying the mixed and conveyed material on a construction surface. And means for controlling the driving of the quick-setting agent supply device so as to automatically synchronize the addition amount of the quick-setting agent with the concrete material per unit amount pumped from the wet press pump. The concrete spraying device, wherein the quick setting agent synchronization control device 10 has the following configuration. i: a concrete material flow rate detector 11 provided in the discharge system of the wet pressure feed pump for detecting the concrete material flow rate X discharged from the wet pressure feed pump per unit time; ii: the discharge flow rate Q of the quick-setting agent per unit time And a quick-setting agent flow rate detector 12 for detecting ′, and iii: a nozzle position detecting means 3 for detecting the position of the spraying means.
If, vi: a setter 14 'to set a plurality of kinds of desired quick-setting admixture amount signal Z _1, Z _2, Z ₃ of quick-setting admixture for concrete material by a position signal from the nozzle position detection means 3, v : Based on the desired addition amount signals Z ₁ , Z ₂ and Z ₃ from the setter 14 ′, the appropriate quick-setting admixture flow rate Q is obtained from the detection signal X from the concrete material flow rate detector 11 and the concrete unit cement amount signal Y. A computing unit 16 for computing, a comparator 17 for detecting the deviation between the appropriate quick-mixture flow rate signal Q and the signal Q'from the quick-mixture flow rate detector 12, and a drive amount signal corresponding to the deviation amount are provided. A control circuit 13 provided with a driver 18 for sending to the drive section of the quick-setting agent supply device.