KR100641820B1 - Automatic extrusion system of soil samples and automatic flow control system for scour rate test apparatus - Google Patents

Abstract

An automatic extrusion system of soil samples and an automatic flow control system for a scour rate test apparatus are provided to quantitatively measure the scour rate of the soil samples through an artificial flow. An apparatus includes a sample rise unit(100) inputting samples into a watering pipe, a flow control unit(200) controlling a flow, and a control unit(300) for controlling an operation of the flow control unit. The sample rise unit includes a support(110) installed at a bottom, a tube fixing plate fixing a sampling tube, a fixing plate elevating unit(130) installed at the support to elevate the tube fixing plate, a piston(140) for elevating the samples in the sampling tube and a piston elevating unit(150) for elevating the piston.

Description

Automatic extrusion system of soil samples and automatic flow control system for scour rate test apparatus

1 is a front view showing the installation state of the automatic sample extraction and flow rate control system for scour rate measuring device according to an embodiment of the present invention.

Figure 2 is a perspective view of the sample raising means shown in FIG.

Figure 3 is a perspective view showing a state of fixing the sample extraction tube to the tube fixing plate shown in FIG.

4 is a front view showing a state in which the tube holding plate is raised after fixing the sampling tube fixed to the tube holding plate.

Figure 5 is a cross-sectional view showing the extraction of the sample into the irrigation channel by raising the piston after connecting the sampling tube to the irrigation channel through the connection.

<Description of Major Symbols in Drawing>

100: sample raising means 110: pedestal

120: tube fixing plate 121: top plate

122: lower plate 123: gap member

130: fixed plate lifting means 131: guide

132: screw 133: screw drive motor

140: piston 150: piston lifting motor

151: drive gear 152: reduction gear

160: sample rise height measuring instrument 170: tube connection

180, 181: fixed grip 200: flow control means

210: flow meter 220: flow control valve

300: control unit

The present invention relates to an automatic sampling and flow rate control system for a scour rate measuring device, and more particularly, by automatically performing the extraction of the sample into the irrigation channel and automatically adjusting the flow rate flowing in the irrigation channel, The present invention relates to an automatic sampling and flow control system for a scour rate measuring device that enables precise measurement.

In general, foundation structures such as bridge piers installed in rivers, rivers, and bays are constructed by submerging the foundation of the wells at the bottom or by fixing the piles with footings, and constructing piers at the center thereof.

At this time, the scour phenomenon occurs due to the flow of water or underwater objects in the ground around the constructed foundation structure, and if such scour phenomenon persists, the pier may not only be damaged but may even collapse. Until.

Meanwhile, the above-described scour is defined as a phenomenon in which fine material is moved from the bottom or the bottom of the river as a result of the erosion of flowing water, and shows different scour patterns according to the composition of the bed material.

For example, in the case of soil with low adhesion between particles, scour occurs rapidly due to running water, but in the case of soil with high adhesion or solidity, the scour rate is low.

In order to check the scour rate as described above, the divers have been directly exposed to the water or irradiated with the naked eye or dedicated equipment such as an underwater camera.

However, when a person directly enters the water and uses a dedicated equipment, it is difficult to measure the accurate scour rate as well as costly due to the use of diving personnel or expensive equipment.

In particular, when the water in the irradiated area is difficult to distinguish the field of vision, it is impossible to check whether or not the scour is properly performed. When scour occurs due to the loss of soil and aggregate, the scour occurs when the soil is filled with soil and aggregate of another part. Without knowing whether or not you could make an error.

Accordingly, the present applicant has a measuring device capable of quantitatively measuring the scour rate using a sample actually collected in the field in order to solve the problems described above. It was disclosed by name.

Applicant's scour rate test apparatus, the water in the reservoir tank is forcedly supplied to the horizontal irrigation channel using a water supply pump so that the flow of water is made, containing the sample collected in the sampling tube connected to the irrigation channel Extraction into the irrigation canal is performed to measure the scour rate of the sample.

However, in the above-described scour rate test apparatus, since a control valve for adjusting the flow rate of water flowing in the irrigation channel is manually operated, it is difficult to precisely control the flow rate, and the sample rises to raise the sample and extract it into the irrigation channel. Since the means consist only of the drive motor and the piston lifted by the drive motor, there is a limit to the extraction of the sample for precise scour rate measurement.

Accordingly, the present invention has been made in order to solve the conventional problems as described above, by automatically performing the extraction of the sample into the irrigation channel and automatically adjust the flow rate flowing through the irrigation channel, precise scour rate measurement An object of the present invention is to provide an automatic sampling and flow control system for a scour rate measuring device.

In order to achieve the object as described above, the automatic sample extraction and flow rate control system for the scour rate measuring device according to the present invention, by raising the sample collected in the sample extraction tube connected to the irrigation channel to inject the sample into the irrigation channel In the configuration consisting of the rising means, the flow rate adjusting means for adjusting the amount of water flowing in the irrigation channel, and the sample raising means and the control means for controlling the operation of the flow rate adjusting means, the sample raising means is provided on the floor A pedestal, a tube fixing plate to which the sample extraction tube is fixed on the upper surface, a fixed plate lifting means installed on the pedestal to elevate the tube fixing plate, and a piston which is installed through the tube fixing plate so as to be lifted to pressurize and raise the sample in the sample extraction tube from below. And a piston lifting means installed on the tube fixing plate to lift the piston. There are characteristics.

In the above-described configuration, the fixing plate elevating means is guided through the upper sides of the pedestal and penetrating both sides of the tube fixing plate, respectively rotatably placed on both sides of the upper part of the pedestal, and screwed through both sides of the tube fixing plate, respectively. It comprises a screw, and a screw drive motor installed on the pedestal and is dynamically connected to the lower portion of the screw to rotate the screw.

In the above-described configuration, the tube fixing plate is composed of an upper plate and a lower plate spaced up and down by the gap member.

In the above-described configuration, the piston lifting means is a piston lifting motor fixed to the lower portion of the tube fixing plate, a drive gear axially coupled to the drive shaft of the piston lifting motor and rotated between the upper plate and the lower plate, and rotates while being engaged with the driving gear to rotate. It includes a reduction gear to reduce the speed and penetrate the center portion of the piston screwed.

In the above configuration, it further comprises a sample rise height measuring device for measuring the rising height of the piston, that is, the rising height of the sample by measuring the number of revolutions of the reduction gear while rotating in engagement with the reduction gear.

In the above-described configuration, the flow rate adjusting means includes a flow rate meter installed in the irrigation canal and measuring a flow rate in the irrigation canal, and a flow rate regulating valve for controlling the flow rate and flow rate by opening and closing the inside of the irrigation canal.

In the above-described configuration, the flow regulating valve comprises an opening and closing plate for opening and closing the inside of the irrigation channel, and an opening and closing plate rotary motor for rotating the opening and closing plate outside the irrigation channel.

Hereinafter, the characteristics and the operation of the above-described configuration through the preferred embodiment of the automatic sample extraction and flow rate control system for scour rate measuring device according to the present invention will be described in more detail.

First, the scour rate measuring apparatus to which the present invention is applied, the water is supplied to the water supply tank 1 in a horizontal state by using a water supply pump to force the water flow is made, the sample connected to the water supply path (1) The sample collected in the extraction tube 2 is extracted to the water channel 1 to measure the scour rate of the sample.

As shown in Figure 1, the automatic sample extraction and flow rate control system for a scour rate measuring device according to an embodiment of the present invention, by raising the sample contained in the sample extraction tube (2) to penetrate into the water passage (1) Automatically control the operation of the sample elevating means 100 and the flow rate adjusting means 200 for adjusting the amount of water flowing through the water channel 1, and the sample elevating means 100 and the flow rate adjusting means 200 to be extracted It comprises a control unit 300.

The above-described sample raising means 100 is to force the sample contained in the sample extraction tube (2) to inject into the water passage (1), as shown in Figure 1 and 2 pedestal 110 is installed on the floor And, a tube fixing plate 120 to which the sample extraction tube 2 is fixed on the upper surface, a fixed plate elevating means 130 installed on the pedestal 110 to elevate the tube fixing plate 120, and within the sample extraction tube 2. It consists of a piston 140 for raising the pressure under the sample, and a piston lifting motor 150 for lifting the piston 140 up and down.

Here, the space 110a is formed in the pedestal 110, a part of the fixed plate lifting means 130 is installed, the piston through hole (not shown) through which the piston 140 to be described later penetrates the center of the pedestal 110 Is formed, a screw through hole (not shown) through which the screw 132 to be described later through each of the center of the upper plate both sides of the pedestal 110 is formed, respectively, the piston lifting motor 150 to be described later on the upper plate of the pedestal 110 A lifting motor through hole (not shown) is formed therethrough.

The tube fixing plate 120 is composed of an upper plate 121 and a lower plate 122 spaced up and down, and a piston through-hole (not shown) through which the piston 140 passes through the center of the upper plate 121 and the lower plate 122. The upper and lower plates 121 and the lower plate 122 are formed on both sides, respectively, and guide through-holes (not shown) through which guides 131 to be described later respectively pass through are formed before and after the upper plate 121 and the lower plate 122. At both centers of the screw through holes (not shown) through which the screws 132 are respectively formed.

In this case, the upper plate 121 and the lower plate 122 are spaced apart from each other by the cylindrical gap member 123, and the upper and lower ends of the gap member 123 pass through the guide through hole of the upper plate 121 and the guide plate of the lower plate 122. The guides 131 are inserted through the centers of the gap members 123, respectively, and inserted into the holes.

The gap member 123 serves to maintain the gap between the upper plate 121 and the lower plate 122 while allowing the tube fixing plate 120 to be smoothly elevated along the guide 131.

In addition, the screw 132 penetrates the screw through hole and the piston 140 through the screw through hole and the piston through hole in the upper portion of the screw through hole formed in the upper plate 121 and the lower portion of the piston through hole formed in the upper plate 121. And screw coupling plates 124 and 125 screwed to the piston 140 are mounted by fastening means such as bolts, respectively.

The fixed plate elevating means 130 is installed on the pedestal 110 to elevate the tube fixing plate 120. The guide plate is formed in each of the front and rear sides of the top of the pedestal 110, and the guide through-holes formed on both sides of the tube fixed plate 120. Guide 131 penetrating through each, and the screw 132 is rotatably installed in the center of the upper both sides of the pedestal 110, respectively through the screw through hole formed in the center of both sides of the tube fixing plate 120, and pedestal 110 It is installed in the) and is connected to the lower portion of the screw 132 and is composed of a screw drive motor 133 to rotate the screw 132.

At this time, the lower portion of the screw 132 penetrates the upper plate of the pedestal 110 and is located in the inner space 110a of the pedestal 110, and at its distal end, the drive sprocket 134 and the chain of the screw drive motor 133. A driven sprocket 136 connected to the 135 is coupled.

The two driven sprockets 136 and the driving sprockets 134 mounted at the bottom of the pair of screws 132 are formed in a triangular shape so that the chain 135 may be peeled off even if they are connected to each other with one chain 135. There is no concern.

According to the fixed plate elevating means 130, when the screw drive motor 133 is rotated, a pair of screws 132 is rotated in the same direction and the tube fixing plate 120 screwed with the screw 132 is elevated do. At this time, the tube fixing plate 120 is elevated in a state in which the flow in the rotational direction of the screw 132 is prevented by the guide 131.

The piston 140 is installed in the center of the tube fixing plate 120 so as to be lifted and lowered to pressurize and raise the sample in the sample extraction tube 2 from the bottom thereof, and a thread is formed outside the rod 141 formed at the bottom thereof. The shaft is coupled to the reduction gear 152 that rotates in engagement with the drive gear 151 mounted on the drive shaft of the piston lifting motor 150.

That is, the rod 141 of the piston 140 passes through the center of the reduction gear 152 but is screwed therethrough, and when the driving gear 151 rotates by driving the piston lifting motor 150, the driving gear The reduction gear 152 meshed with 151 rotates, and the rod 141 of the piston 140 is lifted by the rotation of the reduction gear 152.

As such, when the rod 141 is raised and lowered, the pressure plate 142 formed on the upper portion and inserted into the lower portion of the sample extraction tube 2 presses and raises the sample.

The piston lifting motor 150 raises and lowers the piston 140 and is mounted on the bottom surface of the tube fixing plate 120, and the driving shaft penetrates the lower plate 122 of the tube fixing plate 120 and is mounted at the tip of the driving shaft. The 151 is engaged with the reduction gear 152 rotatably installed between the upper plate 121 and the lower plate 122, and the reduction gear 152 is engaged with the rod 141 of the piston 140.

Therefore, when the piston lifting motor 150 is driven, the piston 140 engaged with the driving gear 151 and the reduction gear 152 rotate while being lifted.

On the other hand, between the upper plate 121 and the lower plate 122 is engaged with the reduction gear 152 while rotating the sample height measuring unit 160 for measuring the rising height of the piston 140, that is, the rising height of the sample through the rotation speed It is further provided.

The sample elevating means 100 is further provided with a tube connecting portion 170 for connecting the sample extraction tube 2 to the irrigation channel 1, the tube connecting portion 170, the clamp 172 or the like, 1) is fixed to the fixing plate 171 is fixed to the lower portion of the fixing plate 171 by the fixing member 174 in the state penetrating the central portion of the fixing plate 171 and a hole is formed in the center of the irrigation canal (1) and It consists of a connecting cylinder 173 in communication.

At this time, an O-ring 175 is installed in the hole of the connecting tube 173 to prevent water in the water passage 1 from flowing through the hole when the sample extraction tube 2 is connected.

The above-described flow rate adjusting means adjusts the amount of water flowing through the irrigation canal 1, and is installed in the irrigation canal 1 and controlled by the controller 300 as shown in FIG. 1 and flow rate in the irrigation canal 1. It includes a flow meter 210 for measuring the flow rate control valve 220 is installed in the irrigation canal (1) and opened and closed the irrigation canal (1) by the control of the controller 300.

At this time, the flow control valve 220 is rotatably installed in the irrigation canal opening and closing plate 221 for controlling the flow rate by opening and closing the inside of the irrigation canal, and installed outside the irrigation canal (1) and control of the controller 300 By the opening and closing plate driving motor 222 to rotate the opening and closing plate 221, and the instructions 223 to be able to check the opening and closing degree of the opening and closing plate 221 with the naked eye.

The control unit 300 is a screw driving motor 133 of the sample raising means, the piston lifting motor 150, and the sample raising height measuring unit 160, and the opening and closing plate driving motor 222 of the flow rate adjusting means 200 and Flow meters 210 and the like are electrically connected to control their operation.

Meanwhile, reference numerals 180 and 181 are tube fixing grips for fixing the sample extraction tube 2 to the center of the tube fixing plate 120. The tube fixing grips 180 and 181 are two grips of semi-circular shape. The sampling tube 2 is fixed to the tube fixing plate 120 by fastening the two grips 180 and 181 to each other by the handle screw 182 while the sampling tube 2 is inserted therebetween. Is fixed to.

At this time, one of the two fixing grips 180, 181 is fixed to the upper surface of the tube fixing plate 120 by a fastening means such as a bolt.

Hereinafter, the operation of the automatic sample extraction and flow control system for the scour rate measuring apparatus according to an embodiment of the present invention configured as described above will be described in detail.

First, as shown in FIG. 3, by loosening the handle screw 182 and separating the tube fixing grips 180 and 181 from each other, the fixing grip fixed to the tube fixing plate 120 of the two fixing grips 180 and 181. After inserting the sample extraction tube (2) containing the sample in the center of the 180, by fastening the two fixing grips 180, 181 against each other with a handle screw 182, the sample extraction tube (2) is a tube fixing plate Is fixed to 120.

As such, when the sample extraction tube 2 is fixed to the tube fixing plate 120, the screw driving motor 133 is rotated to rotate the screw 132, so that the tube fixing plate 120 guides 131 as shown in FIG. 4. Ascending along), the sampling tube 2 is inserted into the connecting tube 173 of the tube connecting portion 170.

At this time, the gap between the sample extraction tube 2 and the connection tube 173 is sealed due to the O-ring 175 inserted into the connection tube 173, so that the water flowing along the water passage 1 It does not leak out through the gap between the extraction tube 2 and the connecting tube 173.

As such, when the sample extraction tube 2 is connected to the irrigation canal 1 through the tube connection unit 170, the water supply pump is operated to fill the irrigation canal 1 with water.

When the inside of the irrigation channel 1 is filled with water, the piston lifting motor 150 is operated to raise the piston 140, so that the pressing plate 142 of the piston 140 is a sample extraction tube as shown in FIG. The sample of (2) is pressurized and raised, and the sample in the sample extraction tube 2 is introduced into the water passage 1 by about 1 mm. At this time, the flow rate of the water flowing in the water pipe (1) is adjusted through the flow rate control device.

As such, when the sample is introduced into the water passage 1 by about 1 mm, the feed pump is operated to generate a flow of water having a constant speed into the water passage 1. At this time, the flow rate is controlled through the flow control valve.

As soon as the elevated sample of 1 mm is scoured, the piston lifting motor 150 is further operated to increase the sample by 1 mm, and the process is repeated until the measurement is completed.

In this process, the sample lift height measuring unit 160 measures the lift height of the sample through the rotational speed of the reduction gear 152 engaged with the rod 141 of the piston 140, and transmits the sample to the control unit 300. When exactly 1 mm rises the operation of the piston lifting motor 150 is stopped and the rise of the sample is also stopped.

In this way, the amount of scour (1 mm × number of times of rise) for 1 hour may be measured, or the time taken for the 1 mm sample to be scoured may be recorded and converted into an hourly scour rate (mm / hr).

In addition, by performing the above-described process for each flow rate, it is also possible to calculate the scour rate for each flow rate, it is possible to determine the relationship between the shear stress and scour rate applied to the sample bottom for each flow rate.

Meanwhile, the process of raising the sample, adjusting the flow rate, and converting the scour rate is automatically performed by the control of the controller 300.

As described above with reference to the accompanying drawings, an automatic sample extraction and flow control system for a scour rate measuring apparatus according to a preferred embodiment of the present invention, the present invention is not limited to the embodiments and drawings described in detail herein. Various modifications may be made without departing from the spirit of the invention.

According to the automatic sample extraction and flow control system for a scour rate measuring device of the present invention configured as described above, extraction of the sample into the waterway by the sample raising means is automatically performed, and the inside of the waterway by the flow rate adjusting means. By automatically adjusting the flow rate and the flow rate, the scour rate measurement can be precisely performed.

In addition, according to the automatic sample extraction and flow control system for the scour rate measuring device according to the present invention, so as to be useful to quantitatively measure the scour rate of the Buddhism eggs (dirt) actually collected in the field through the flow of artificial water Thus, the scour rate of the ground can be easily estimated for the corresponding flow rate and shear stress.

Claims (7)

A sample elevating means for elevating the sample collected in the sampling tube connected to the irrigation channel and injecting the sample into the irrigation channel, a flow rate adjusting means for controlling the amount of water flowing in the irrigation channel, and the sample elevating means and the flow rate In the automatic sampling and flow rate control system for scour rate measuring device comprising a control means for controlling the operation of the adjustment means, The sample raising means, Pedestal mounted on the floor; A tube fixing plate on which an upper surface of the sample extraction tube is fixed; A fixed plate elevating means installed on the pedestal and elevating the tube fixing plate; A piston installed in the tube fixing plate so as to be lifted and lowered to pressurize and raise the sample in the sample extraction tube from below; And Automatic sample extraction and flow rate control system for a scour rate measuring device, characterized in that it comprises a piston lifting means installed on the tube fixing plate to raise and lower the piston. The method of claim 1, The fixed plate lifting means, Guides which are respectively installed on both sides of the upper part of the pedestal and penetrate both sides of the tube fixing plate; Screws rotatably installed on both sides of the upper portion of the pedestal, respectively, and through the screwed through both sides of the tube fixing plate; And And a screw drive motor installed on the pedestal and connected to the lower portion of the screw to rotate the screw. The method of claim 2, The tube fixing plate is an automatic sample extraction and flow rate control system for a scour rate measuring device, characterized in that consisting of the upper and lower plates spaced up and down by the gap member. The method of claim 3, wherein The piston lifting means, A piston lift motor fixed to the lower portion of the tube fixing plate; A drive gear axially coupled to the drive shaft of the piston lifting motor and rotating between the upper and lower plates; And An automatic sample extraction and flow rate control system for a scour rate measuring device, characterized in that it comprises a reduction gear that rotates while meshing with the drive gear to rotate the rotation speed and penetrate the piston through the center of the screw. The method of claim 4, wherein Automatic sample extraction for a scour rate measuring device, characterized in that it further comprises a sample height measuring device for measuring the rising height of the piston, that is, the rising height of the sample by measuring the rotational speed of the reduction gear while rotating in engagement with the reduction gear. And flow control system. The method according to any one of claims 1 to 5, The flow control means, A flow meter installed in the water channel to measure a flow rate in the water channel; And Automatic sample extraction and flow control system for scour rate measuring device, characterized in that it comprises a flow control valve for controlling the flow rate and flow rate by opening and closing the inside of the irrigation. The method of claim 6, The flow control valve, An opening and closing plate for opening and closing the water passage; And Automatic sample extraction and flow rate control system for scour rate measuring device, characterized in that it comprises an opening and closing plate rotation motor for rotating the opening and closing plate from the outside of the irrigation.

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