WO2011004982A2

WO2011004982A2 - Safe operation system and safe operation method for equipment for supplying concrete

Info

Publication number: WO2011004982A2
Application number: PCT/KR2010/004245
Authority: WO
Inventors: 김상민; 조석희; 김진우; 최태일; 조광범; 이정철
Original assignee: 현대건설주식회사
Priority date: 2009-07-09
Filing date: 2010-06-30
Publication date: 2011-01-13
Also published as: WO2011004982A3

Abstract

The present invention provides a safe operation system for equipment for supplying concrete, comprising: a plurality of pressure sensors spaced apart from each other along the lengthwise direction of a concrete supply pipe to sense the internal pressures of the supply pipe at the respective locations of the sensors; a memory unit, which stores normal operation pressure range information or normal operation pressure variation information at the respective locations of the sensors; and a control unit which compares the internal pressures sensed by the pressure sensors and the normal operation pressure range information stored in the memory unit after starting the operation of the concrete pump, which determines whether or not the interior of the concrete supply pipe is clogged, and which stops the operation of the concrete pump when one or more internal pressures sensed by the pressure sensors or a variation in one or more internal pressures exceed a normal operation pressure range or are lowered to a level below a normal operation pressure variation range. As the internal pressures or internal pressure variation of the concrete supply pipe are monitored on a real-time basis by the pressure sensors arranged on the concrete supply pipe, clogging or clogged points of the concrete supply pipe can be detected in a quick and accurate manner, and the clogging of the pipe can be estimated and examined in advance, thereby preventing or reducing the breakage of the pipe caused by a rise in pressure in the concrete supply pipe, and stably controlling air. In addition, the present invention enables the clogged concrete supply pipe to be replaced alone, thereby reducing repair costs.

Description

Safe operation system and safe operation method of concrete supply equipment

The present invention relates to a safe operation system and a safe operation method of a concrete supply facility, and more particularly, to quickly and accurately determine the blocked position of the concrete supply pipe in the concrete supply facility used to supply concrete to a high-rise building, and furthermore, the pressure The present invention relates to a safe operation system and a safe operation method of a concrete supply facility that can prevent or reduce damage caused by an elevation.

In general, concrete is used for the construction of various structures such as buildings, and when constructing a high-rise building, the concrete is transported to a high place by using a concrete pump car and a concrete supply pipe, which are concrete supply facilities. In the above concrete supply facility, when constructing a high-rise building having a very high building height, the pressure in the supply pipe is very high to supply concrete to the high-rise building.

By the way, in the conventional concrete supply equipment, as the concrete flows into the supply pipe, the concrete residues harden in the supply pipe, or foreign substances are injected to block the supply pipe. As the pressure of the pipe increases, damage occurs in the supply pipe, a connection part (for example, a flange, etc.) connecting the supply pipe, and there is a problem that a safety accident occurs, construction stops, and further reconstruction occurs.

In addition, in the conventional concrete supply equipment, even if a blockage of the supply pipe occurs, the length of the supply pipe is very long, and it is very difficult for the operator to check the inside of the supply pipe, so that the worker supplies the mall. It was difficult to determine exactly which part of the pipe was blocked.

The present invention not only quickly and accurately grasps the position of the blockage of the concrete supply pipe, but also predicts and examines the blockage in the supply pipe in advance, thereby preventing or reducing damage caused by the pressure increase in the concrete supply pipe, and preventing air delay. It is an object of the present invention to provide a safe operation system and a safe operation method of a concrete supply facility.

The present invention provides a safe driving device of a concrete supply facility having a concrete pump and a concrete supply pipe connected to the concrete pump and supplying concrete discharged from the concrete pump to a high-rise building, wherein the longitudinal direction of the concrete supply pipe is A plurality of pressure sensors which are installed to be spaced apart from each other and store internal pressures of the supply pipe at a corresponding position, and store normal operating pressure range information or normal operating pressure change rate information at a position where the pressure sensors are installed; After starting the concrete pump, the internal pressures detected by the pressure sensors are compared with the normal operating pressure range information of the memory unit, so that one or a plurality of the detected internal pressures are equal to the internal pressure or the internal pressure. The rate of change is outside the normal operating pressure range When it is lowered or below the normal operating pressure change rate range, it is determined that the interior of the concrete supply pipe is blocked to provide a safe operation system of a concrete supply facility including a control unit for stopping the operation of the concrete pump.

According to another aspect of the invention, the present invention is a safe operation method of a concrete supply equipment having a supply pipe for supplying the concrete discharged from the concrete pump discharged from the concrete pump to a high-rise building, the longitudinal direction of the concrete supply pipe Sensing internal pressures at a corresponding position from a plurality of pressure sensors spaced apart from each other along and after starting the concrete pump, one or more of the detected internal pressures are out of a normal operating pressure range, or If it is lowered below the operating pressure change rate range, it is determined that the interior of the concrete supply pipe is blocked, and the step of stopping the operation of the concrete pump. In another aspect, the present invention performs a driving simulation experiment by horizontally simulating the concrete supply equipment including the concrete pump and the concrete supply pipe on the ground, and the normal operating pressure range corresponding to the pressure sensors from the driving simulation experiment Or deriving the normal operating pressure change rate range.

Therefore, in the present invention, since the internal pressure or the rate of change of the internal pressure is monitored in real time by pressure sensors installed in the concrete supply pipe, it is possible to quickly and accurately grasp the blockage and the location of the blockage of the concrete supply pipe, as well as the blockage in advance. It can be predicted and reviewed to prevent or reduce the damage caused by the pressure increase in the concrete supply pipe, to manage the air stably, and to replace only the concrete supply pipe in the occluded part, thus requiring unnecessary recovery cost. Can be reduced.

1 is a block diagram showing a control flow of a safe operation system of a concrete supply facility according to an embodiment of the present invention.

FIG. 2 is a schematic diagram illustrating a safe driving system of the concrete supply facility of FIG. 1.

FIG. 3 is a flowchart illustrating a method of safely operating a concrete supply facility using the safe driving system of the concrete supply facility in FIG. 1.

FIG. 4 is a schematic diagram illustrating a driving simulation test apparatus for deriving a normal operating pressure range and a normal operating pressure change rate range for safely operating the concrete supply facility of FIG. 3.

5 and 6 are graphs showing the behavior of the normal operating pressure range and the abnormal operating pressure derived from the driving simulation test apparatus shown in FIG. 4, and the behavior of the normal operating pressure change rate range and the abnormal operating pressure change rate.

7 is a cross-sectional view showing a pressure sensor protection device installed in the supply pipe of FIG.

8 is a perspective view showing a pressure sensor protection unit installed in the supply pipe of FIG.

9 is a cross-sectional view in which the elastic member and the support member are installed in FIG. 8.

10 and 11 are plan views illustrating embodiments of the supporting member of FIG. 9.

12 is a cross-sectional view illustrating an example in which the supporting member of FIG. 9 is fixed to the connection pipe.

FIG. 13 is a cross-sectional view of concrete passing through the supply pipe of FIG. 8.

14 is a cross-sectional view illustrating an example in which the supply pipe of FIG. 8 is cleaned.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, referring to FIGS. 1 and 2, a safe driving system (hereinafter referred to as a “safe driving system”) 100 of a concrete supply facility according to an embodiment of the present invention may include a concrete pump 140 and the concrete pump ( As a safety driving system 100 having a concrete supply pipe 180 connected to the 140 to supply the concrete discharged from the concrete pump 140 to the high-rise building 10, a plurality of pressure sensors (111, 112, 113, 114, 115, 116), The memory unit 130, the control unit 120, the display unit 150, and the alarm unit 160 are included.

The concrete supply pipe 180 is installed in a vertical direction along the side of the high-rise building 10 under construction. One end of the concrete supply pipe 180 is connected to the concrete pump 140, the other end is connected to the supply nozzle 182. The concrete supply pipe 180 serves to supply concrete discharged from the concrete pump 140 to a specific location of the high-rise building 10. Here, the concrete pump 140 performs a function of discharging concrete, the suction side is connected to the concrete storage unit 170, such as ready concrete. On the other hand, the concrete supply pipe 180, some sections are formed of a transparent material so that the worker can grasp the concrete flow state inside. In addition, the concrete supply pipe 180 may have a structure including a plurality of pipes and flanges extending by combining the pipes, but is not limited thereto and may have various structures.

The plurality of

pressure sensors

111, 112, 113, 114, 115, and 116 may include first, second, third, fourth, fifth, and sixth pressure sensors, and may be installed to be spaced apart from each other along a longitudinal direction of the concrete supply pipe 180. The internal pressures of the concrete supply pipe 180 are sensed. The first, second, third, fourth, fifth, and

sixth pressure sensors

111, 112, 113, 114, 115, and 116 may be installed at equal intervals, and relatively weak or curved portions or adjacent portions of the concrete supply pipe 180 may be adjacent to each other. The front and rear parts may be installed, but the present invention is not limited thereto. In addition, although the

pressure sensors

111, 112, 113, 114, 115, and 116 are provided with one

sensor

111, 112, 113, 114, 115, and 116 in each floor from the second floor to the rooftop for the six-story building 10 in the present embodiment, this is one embodiment. The number of the lengths 180 may vary depending on the amount of concrete discharged. In addition, the

pressure sensors

111, 112, 113, 114, 115, and 116 are wireless pressure sensors applied to sense the internal pressure of the supply pipe 180 at an installation position, and wirelessly transmit the information to the controller 120.

As described above, the pressure sensors (111, 112, 113, 114, 115, 116) are installed for each section of the supply pipe 180, it is possible to quickly and accurately grasp the blockage occurring in a section of the supply pipe 180, and thus supply pipe 180 Before the breakage of the supply pipe 180, appropriate measures such as replacement and repair can be taken in advance to prevent safety accidents and prevent air delay. On the other hand, when the supply pipe 180 is replaced with a plurality of pipes and flanges can be made by a method of connecting the new pipe and loosening the flange to which the blocked pipe is connected.

In addition, the safe driving system 100 includes

temperature sensors

117 and 118, respectively, at the front and rear ends of the supply pipe 180.

The memory unit 130 stores the normal operating pressure range information or the normal operating pressure change rate information at the position where the

pressure sensors

111, 112, 113, 114, 115, and 116 are installed. Here, the method for deriving the normal operating pressure range information or the normal operating pressure change rate information may be variously selected. In the present embodiment, the normal operating pressure range is determined as the maximum pressure or the maximum pressure change rate corresponding to each of the

pressure sensors

111, 112, 113, 114, 115, and 116, which will be described later.

The controller 120, after starting the concrete pump 140, internal pressures detected by the

pressure sensors

111, 112, 113, 114, 115, and 116 and the normal operating pressure range information or the normal operating pressure change rate of the memory 130. By comparing them based on the information, the operation of the concrete pump 140 is controlled, and the various embodiments of the control method are as follows.

First, the controller 120, after the start of the concrete pump 140, one or more of the internal pressure detected by the

pressure sensors

111, 112, 113, 114, 115, 116 is the internal pressure or the rate of change of the internal pressure is the normal operating pressure range If out of or outside the normal operating pressure change rate range, it is determined that the inside of the concrete supply pipe 180 is blocked to stop the operation of the concrete pump 140. Specifically, the control unit 120 is one or more of the internal pressure detected by the

pressure sensors

111, 112, 113, 114, 115, 116 when the rate of change of the internal pressure is lower than the normal operating pressure change rate range of the concrete supply pipe 180 It is determined that the inside of the blockage is stopped the operation of the concrete pump 140. In this case, the controller determines that the concrete supply pipe 180 is blocked before the portion where the specific pressure sensor is lowered below the normal operating pressure change rate range.

In addition, the controller 120 may include a pressure sensor installed at the foremost of the pressure sensors in which the rate of change of the internal pressure or the internal pressure of the plurality of

pressure sensors

111, 112, 113, 114, 115, and 116 is lower than the normal operating pressure range or the normal operating pressure change rate range. Among the plurality of

pressure sensors

111, 112, 113, 114, 115, and 116, the concrete supply pipe 180 between the pressure sensors installed at the rear of the pressure sensors whose internal pressure or the rate of change of the internal pressure is higher than the normal operating pressure range or the normal operating pressure change rate range. ) Is judged to be blocked.

In addition, the control unit 120, if the rate of change of the pressure detected from the pressure sensor (111, 112, 113, 114, 115, 116) is greater than the set value after the concrete pump 140 is started to reach the normal operating state, the concrete supply equipment is the normal It may be determined that the driving range is out of range.

In addition, the control unit 120, the change rate of the internal pressure or the internal pressure of the first, second, third, fourth, fifth,

sixth pressure sensors

111, 112, 113, 114, 115, 116 at a specific time is less than the normal operating pressure range or the normal operating pressure change rate The pressure sensors (hereinafter referred to as "pressure reducing pressure sensors") lowered to the pressure sensor, and the pressure sensor installed at the foremost of the pressure reducing pressure sensors and the pressure sensor installed at the rear of the pressure reducing pressure sensors. It is determined that the concrete pipe 180 is blocked. Here, the foremost means the position closest to the concrete pump 140.

On the other hand, the control unit 120 transmits the information on the operation stop or the internal pressure state and the position of each of the supply pipe 180, the concrete pump 140 to the worker as an image through the display unit 150. do. In addition, the control unit 120 also provides the voice information using the alarm unit 160 to stop the operation of the concrete pump 140 or the internal pressure state and position of each supply pipe 180. Inform. Here, the display unit 150 and the alarm unit 160 are known devices of a monitor, a warning lamp, and an alarm sound connected to the control unit 120, and a detailed description thereof will be omitted. Meanwhile, reference numeral 135 in FIG. 2 represents a logger 135 that records wireless data from the

pressure sensors

111, 112, 113, 114, 115 and 116 and the

temperature sensors

117 and 118 and outputs the wireless data to the controller 120.

Reference numerals

136a, 136b, and 136c denote gateways, respectively.

Hereinafter, referring to FIG. 3, the method of identifying the cause of the blockage in the supply pipe and finding the location thereof will be described in detail.

First, a driving simulation test is performed to derive a normal operating pressure range and a normal operating pressure change rate range (step S10).

4, there is shown a schematic diagram of an apparatus for the driving simulation test. The concrete pump 140 is connected to the concrete storage device 190. The concrete pump 140 has the same specifications as actually used to actually supply concrete to the high-rise building 10a. The concrete supply pipe 180a connects the concrete pump 140 and the concrete storage device 190 with pipes having a hydrodynamically similar structure. On the other hand, in the above-described driving simulation test apparatus, since the supply pipe 180a is horizontally installed on the ground, there is substantially no influence of gravity. Therefore, the length of the pipe (180a) is made longer than the length of the concrete supply pipe (180).

A total of 14 pressure sensors are installed to be spaced apart from the concrete pump 140 and the pipe 180a. Concrete stored in the concrete storage device 170 is passed through the pipe (180a) by the concrete pump 140, the concrete placing boom (CPB; concrete placing boom; 142) in the concrete placing position (10a) Is installed.

5 and 6 are graphs illustrating a change rate of the internal pressure sensed by the pressure sensors and the internal pressure sensed by the pressure sensors after the operation of the concrete pump 140 starts and stabilizes. In the following description, a total of four pressure sensors will be described. In FIG. 5, pressure graphs f1, f2, f3, f4 measured from after the concrete pump 140 has reached a normal operating state are shown. In addition, FIG. 6 shows pressure change rate graphs g1, g2, g3, and g4 measured after the concrete pump 140 reaches a normal operating state. Referring to the figure, the internal pressure and the internal pressure change rate are within the normal operating pressure range until the time t1. By the way, when the time passes t1 and a clogging phenomenon occurs inside the supply pipe between the second pressure sensor P1 and the third pressure sensor P3, the first pressure sensor P1 and the first agent are blocked. The pressures f1 and f2 of the second pressure sensor P2 rise rapidly, and the pressures f3 and f4 of the third pressure sensor P3 and the fourth pressure sensor P4 decrease rapidly. That is, the internal pressures of the first, second, third and fourth pressure sensors P1, P2, P3 and P4 are all out of the normal operating pressure range.

6, the absolute value increases while the pressure change rates g1 and g2 of the first pressure sensor P1 and the second pressure sensor P2 have positive values. The absolute value increases while the pressure change rates g3 and g4 of the third pressure sensor P3 and the fourth pressure sensor P4 have a negative value. From this, the rate of change of the internal pressure of the first, second, third and fourth pressure sensors P1, P2, P3 and P4 is also out of the normal operating pressure range.

From the above, since the time t1, it may be assumed that a blockage phenomenon occurred in the inside of the pipe (180a). When a blockage occurs in the pipe 180a, the concrete discharged from the concrete pump 140 may not be circulated, and the internal pressure is rapidly increased while stagnating in the pipe 180a. In addition, since there is no supply of concrete in the downstream portion of the blocked portion of the pipe 180a, the internal pressure drops rapidly. Therefore, based on the change in the internal pressure, the controller 120 determines that the pipe 180a is blocked between the second pressure sensor P2 and the third pressure sensor P3. That is, a blockage occurs between a portion that rises and falls on the basis of the internal pressure of the pipe 180a, or a portion that has risen based on the internal pressure change rate of the pipe 180a (has a positive value). It can be assumed that there is a blockage between the and falling portions (having a negative value).

Therefore, the maximum pressure may be used as a reference for the abnormal operating pressure state due to the blockage inside the pipe 180a. In addition, since the rate of change of pressure also increases rapidly, the maximum rate of change of pressure may be used as a reference for the abnormal operating pressure state.

The controller 120 stores the normal operating pressure information and the abnormal operating pressure information derived by the driving simulation test in the memory unit 130. In particular, in the case of the high-rise building 10, because the concrete must be supplied for each floor, the driving simulation test is performed for each floor, respectively.

After performing the above operation and deriving each information by the driving simulation test, after separating the concrete pump 140 and the pressure sensors from the simulation apparatus, as shown in Figs. 1 and 2, Install at actual construction site. From this, the field installation work of the safe driving system 100 is completed.

As described above, after the driving simulation test to derive the normal operating pressure range and the normal operating pressure change rate range, when the field installation work of the safety driving system 100 is completed, the concrete pump 140 is started, and the pressure The internal pressures and the internal pressure change rate detected at the corresponding positions from the

sensors

111, 112, 113, 114, 115, and 116 are received in real time on a set time unit (step S20).

Then, the controller 120 determines whether the internal pressures and the internal pressure change rates are outside the normal operating pressure range and the normal operating pressure change rate range (S30). Here, the mechanism for finding the position occluded in the concrete supply pipe 180 is similar to the mechanism for finding the blocked position in the pipe described above, a detailed description thereof will be omitted.

At this time, if the internal pressures out of the normal operating pressure range, the operation of the concrete pump 140 is stopped (step S40), and reports it to the situation room (step S45). The internal pressure increases when a part of the inside of the concrete supply pipe 180 is blocked. If the concrete pump 140 continues to operate even in the above state, the internal pressure rapidly rises, and the pipe This is because it may cause damage to the supply pipe 180, such as damage to the connection portion of the flange. In particular, in the case of construction of high-rise building, the concrete supply pipe 180 is very long in length, the concrete supply pipe 180 is a structure fixed to the frame 30 is installed on the side of the building 10 under construction Since the repair work is very difficult at the time of the occurrence of the damage, and the construction is inevitably interrupted at the time of the repair work, the construction period is increased and the construction cost is increased.

However, in this embodiment, since the internal pressure and the internal pressure change rate of the concrete supply pipe 180 are monitored in real time, the possibility of breakage of the concrete supply pipe 180 can be greatly reduced.

As described above, after stopping the operation of the concrete pump 140, and informs the abnormal operation information to the outside, the cause and location of the blockage of the supply pipe 180 is grasped (step S60). Then replace the corresponding pipe (S70) to carry out the repair work, and when the repair work is completed, re-concrete concrete (S80).

On the other hand, when looking at the situation or condition that the control unit 120 determines that the interior of the concrete supply pipe 180 is blocked, the control unit 120 is out of the normal operating pressure range of the concrete supply pipe 180. Or, it may be determined that the concrete supply pipe 180 is blocked before the specific pressure sensor (111, 112, 113, 114, 115, 116) is lowered below the normal operating pressure change rate range, or the interior of the plurality of pressure sensors (111, 112, 113, 114, 115, 116) Internal pressure or internal pressure among the

pressure sensors

111, 112, 113, 114, 115, and 116 installed at the foremost of the

pressure sensors

111, 112, 113, 114, 115, and 116 whose pressure or internal pressure change rate is lower than the normal operating pressure range or the normal operating pressure change rate. Rate of change of pressure is within normal operating pressure range or normal operating pressure Of the pressure sensor (111112113114115116) goes beyond the range rate between the pressure sensor (111112113114115116) provided at the rearmost it can be determined that there is the concrete supply pipe 180 is closed. In addition, the control unit 120, after the concrete pump 140 is started to reach the normal operating state, if the rate of change of the pressure detected from the pressure sensor (111, 112, 113, 114, 115, 116) is greater than the set value, the concrete supply equipment is the If it is out of the normal operating range it is determined that the concrete supply pipe 180 is blocked.

In addition, the control unit 120 informs the operator in response to the stop situation by using the display unit 150 as a voice such as an image of an monitor or an alarm and a warning lamp (S50). That is, the controller 120 compares the internal pressures and the internal pressure change rate from the

pressure sensors

111, 112, 113, 114, 115, and 116 with the normal operating pressure information and the normal operating pressure change rate information stored in the memory 130 to determine the degree of occlusion. By determining, grasping information about the blockage in the concrete supply pipe 180 and its position, and using the display unit 150 to inform the operator of the blocked position information by video and audio, Enables quick and accurate response.

Referring to FIG. 7, the safe driving system 100 is connected in a vertical direction with respect to the longitudinal direction of the concrete supply pipe 180, and the pressure sensor 110 is coupled to a pressure state in the supply pipe 180. It is further provided with a pressure sensor protector 190 for transmitting to the pressure sensor 110 and protect the pressure sensor 1110. The pressure sensor protection device 190 is in communication with the supply pipe 180 and the connection socket 191 to which the pressure sensor 110 is coupled, and the first fluid (filled) inside the connection socket 191 ( 193) and the second fluid 192 and the first and second fluids 193 and 192 are positioned horizontally inside the connection socket 191, respectively, and the outer side is connected to the connection socket 191. Sliding contact with the inner surface of the first and the second fluid (193, 192) includes a protective tab (194) for moving in the vertical direction to protect the pressure sensor (110) according to the respective hydraulic pressure. Here, the first fluid 193 is grease, and the second fluid 192 may be applied as silicon, but is not limited thereto. On the other hand, the connection socket 191 is coupled to each of the pressure sensor 110 and the supply pipe 180 by a screw coupling method, but is not limited thereto. Here, reference numeral 1 denotes concrete.

On the other hand, the safe driving system 100, in addition to the pressure sensor protection device 190 of the above-described structure further includes a pressure sensor protection unit 200 of another structure to protect the pressure sensor. In this regard, referring to FIG. 8, the pressure gauge protection unit 200 of the concrete supply pipe 180 includes a connection pipe 210 and a blocking network 220.

The connection pipe 210 is connected perpendicular to the longitudinal direction of the supply pipe 180 for supplying concrete is in communication with the supply pipe 180. The connection pipe 210 is coupled to the pressure sensor 110 for measuring the pressure of the supply pipe 180.

The blocking network 220 is disposed in the form of a mesh (mesh) inside the connection pipe 210, foreign matter (gravel, sand, etc.) in the concrete passing through the supply pipe 180 is the pressure sensor 110 Block it from entering the side.

In the process of conveying the concrete through the supply pipe 180, the gravel, sand, etc. mixed in the concrete may be pushed into the connection pipe 210. If the size of the connection pipe 210 is small, the interior of the connection pipe 210 is completely blocked by the gravel, sand, etc., there is a problem that the measurement of the pressure sensor 110 becomes difficult at all. In addition, when the size of the connection pipe 210 is large, the gravel, sand, etc. are introduced into the connection pipe 210 and hit the pressure sensor 110, the pressure sensor 110 is damaged as the pressure sensor 110 ) Has to be replaced frequently.

However, the blocking network 220 may solve the problem that the pressure sensor 110 is damaged or broken by blocking foreign materials such as gravel and sand from passing through the connection pipe 210. In addition, according to such a blocking network 220, while increasing the size of the connection pipe 210 there is an effect to prevent the penetration of the foreign matter.

The blocking network 220 is disposed inside the connection pipe 210, and disposed in the position as far as possible from the pressure sensor 110, to effectively block the gravel, sand and the like in advance. To this end, the blocking network 220 is to be fixed inside the connection portion of the connection pipe 210 that is connected to the supply pipe 180, that is, the connection between the supply pipe 180 and the connection pipe 210.

9 is a cross-sectional view in which the elastic member and the support member are installed in FIG. 8. Referring to FIG. 9, the pressure gauge protection unit 200 of the concrete supply pipe includes an elastic member 230 and a support member 240.

The elastic member 230 elastically supports that the blocking net 220 is drawn into the connection pipe 210 to allow the blocking net 220 to protrude into the supply pipe 180. That is, the elastic member 230 allows the blocking network 220 to protrude to the inside of the supply pipe 180 in the normal state. The elastic member 230 may be applied to a variety of known materials such as spring, rubber having an elastic restoring force.

Here, when an external force is applied from the lower side of the elastic member 230 (when an upward pressure such as concrete is pushed up), the elastic state is changed to the elastic compression state. At this time, the blocking network 220 is moved upwards according to the compression of the elastic member 230 is drawn into the connection pipe 210.

That is, the blocking network 220 is manufactured to be able to move up and down according to the state of the elastic member 230. As an example, the blocking network 220 may be manufactured to have a planar area larger than the cross-sectional area of the connection pipe 210 so that its outer edge is fixed along the inner circumference of the connection pipe 210. As another example, the blocking network 220 may be implemented with an elastic material such as rubber. In this case, the planar area of the shielding network 220 may be made of the same area as the cross-sectional area of the connection pipe 210 or a smaller plane or a slightly larger area.

On the other hand, the support member 240 is disposed across the inner side of the connection pipe 210 corresponding between the blocking network 220 and the pressure sensor 110. At this time, the elastic member 230, one end and the other end has a form that is connected to the support member and the blocking network 220, respectively.

The support member 240 is formed in a frame or line shape so as to keep the inside of the supply pipe 180 and the connection pipe 210 communicating with each other. This is to ensure that there is no obstacle in measuring the pressure of the pressure sensor 110. 10 is a plan view showing two embodiments of such a support member. Referring to FIG. 10, the support member 240 is disposed and fixed to cross in a straight line within the connection pipe 210. Referring to FIG. 11, two support members 240 are cross-shaped. It is arranged in a fixed arrangement. Here, the structure of Figure 11 than the structure of Figure 10, the support member 240 in the connection pipe 210 can be more firmly fixed.

The support member 240 may be fixed to the connection pipe 210 in various ways. As an example, FIG. 12 is a cross-sectional view illustrating an example in which the supporting member 240 is fixed in the connection pipe 210. Referring to FIG. 12, as each end of the support member 240 is inserted into a seating groove 211 formed at an inner surface of the connection pipe 210, the support member 240 is connected to the connection pipe 210. It can be stably fixed to the inside of the. As another example, a hook portion (not shown) is formed on an inner surface of the connection pipe 210, and a hook portion (not shown) is caught at an end portion of the support member 240. ) May be fixed to the connection pipe 210. The support member 240 may be used a variety of materials, such as metal, plastic that can stably fix the elastic member 230.

FIG. 13 is a cross-sectional view of concrete passing through the supply pipe of FIG. 8. Referring to FIG. 13, while the concrete 1 passes through the supply pipe 180, the elastic member 230 is compressed by the pressure of the concrete 1 so that the blocking network 220 connects the connection pipe. To be drawn into the inside of 210. Of course, even if the blocking network 220 is introduced into the connection pipe 210, foreign matter in the concrete is not introduced into the connection pipe 210 as blocked by the blocking network 220. Therefore, the connection pipe 210 is not clogged or the pressure sensor 110 is damaged.

14 is a cross-sectional view illustrating an example in which the supply pipe of FIG. 8 is cleaned. Referring to Figure 14, the supply pipe 180 is cleaned as the interior passes through the cleaning means 40, such as a piston later. For example, the piston cleans the inside of the supply pipe 180 while passing through the supply pipe 180 by pneumatic pressure.

In this case, while the cleaning means 40 passes through the supply pipe 180, the blocking network 220 protruding into the supply pipe 180 contacts the surface of the cleaning means 40. The blocking network 220 is cleaned together when the supply pipe 180 is cleaned. That is, the blocking network 220 is protruded into the supply pipe 180 by the elasticity of the elastic member 230, so that when the cleaning means 40 passes, the cleaning means 40 with the cleaning means 40 The contact force is improved, and thus the blocking network 220 is cleaned neatly.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

The present invention can be used in concrete supply facilities for constructing high-rise buildings using concrete.

Claims

A safe driving system of a concrete supply facility having a concrete pump and a concrete supply pipe connected to the concrete pump and supplying concrete discharged from the concrete pump to a high-rise building,

A plurality of pressure sensors installed spaced apart from each other along the longitudinal direction of the concrete supply pipe and detecting internal pressures of the supply pipe at a corresponding position;

A memory unit for storing normal operating pressure range information or normal operating pressure change rate information at a position where the pressure sensors are installed; And

After starting the concrete pump, one or more of the detected internal pressures are internal by comparing the internal pressures detected by the pressure sensors with the normal operating pressure range information or the normal operating pressure change rate of the memory unit. Concrete supply facility including a control unit for stopping the operation of the concrete pump is determined that the inside of the concrete supply pipe is blocked when the rate of change of the pressure or internal pressure is out of the normal operating pressure range, or outside the normal operating pressure change rate range Safe driving system.
The method according to claim 1,

The normal operating pressure range, the safe driving system of the concrete supply facility is determined by the maximum pressure corresponding to each pressure sensor.
The method according to claim 1,

It is determined that the inside of the concrete supply pipe is blocked,

Safe operation system of the concrete supply pipe is determined that the concrete supply pipe is blocked in the transfer of the portion of the concrete supply pipe out of the normal operating pressure range, or a specific pressure sensor that is lowered below the normal operating pressure change rate range.
The method according to claim 3,

The control unit,

A pressure sensor installed at the foremost of the pressure sensors in which the rate of change of the internal pressure or the internal pressure of the plurality of pressure sensors is lower than the normal operating pressure range or the normal operating pressure change rate range, and the internal pressure or the internal pressure of the plurality of pressure sensors. A safety operation system for a concrete supply facility, wherein the concrete supply pipe is determined to be blocked between the pressure sensors installed at the rear end of the pressure sensors whose pressure change rate is higher than the normal operating pressure range or the normal operating pressure change rate range.
The method according to claim 1,

The control unit,

After the concrete pump is started to reach the normal operation state, if the rate of change of the pressure detected from the pressure sensor is greater than the set value, the safety operation system of the concrete supply facility is determined to be out of the normal operation range .
The method according to claim 1,

A connection socket connected in a vertical direction with respect to the longitudinal direction of the concrete supply pipe and in communication with the supply pipe, to which the pressure sensor is coupled, a first fluid and a second fluid filled inside the connection socket, and the connection socket Located in the horizontal direction in the horizontal direction to separate the first and the second fluid up and down respectively, the outer surface is slidably contacted with respect to the inner surface of the connecting socket in accordance with the respective hydraulic pressure of the first and second fluid And a pressure sensor protector including a protection tab to move in the vertical direction and to protect the pressure sensor.
The method according to claim 1,

The concrete supply pipe,

Safe operation system of concrete supply facility, which is made of transparent material in some sections so that worker can grasp the concrete flow state from the outside.
The method according to claim 1,

Safe operation of the concrete supply equipment further comprises a display unit connected to the pressure sensor or the memory unit or the control unit to inform the operator of the operation stop of the concrete pump or the internal pressure state and position of each supply pipe. system.
The method according to claim 1,

A connection pipe connected vertically with respect to the longitudinal direction of the concrete supply pipe to communicate with the supply pipe, and to which a pressure sensor for measuring the pressure of the supply pipe is coupled; And

And a pressure sensor protection unit disposed inside the connection pipe, the pressure sensor protection unit including a blocking network to block foreign matter in the concrete passing through the supply pipe from being introduced into the pressure sensor.
The method according to claim 9,

The blocking network,

Is disposed inside the connection pipe, the safety driving system of the concrete supply equipment is fixed inside the connection portion of the connection pipe connected to the supply pipe.
The method according to claim 9 or 10,

And a resilient member for elastically supporting the blocking network being drawn into the connection pipe so that the blocking network protrudes into the supply pipe.
The method according to claim 11,

Safe operation system of the concrete supplying facility for the elastic network is compressed by the pressure of the concrete while the concrete passes through the supply pipe so that the blocking network is introduced into the connection pipe.
The method according to claim 11,

While the cleaning means for cleaning the inside of the supply pipe passes through the supply pipe, the screening network protruding into the supply pipe is in contact with the surface of the cleaning means, and the screening network is used to clean the supply pipe. Safe driving system of the concrete supply plant to be cleaned.
The method according to claim 11,

Further comprising a support member disposed across the inner side of the connection pipe corresponding to the blocking network and the pressure sensor,

The elastic member,

One end and the other end of the safe operation system of the concrete supply equipment is connected to the support member and the blocking network respectively.
A safe operation method of a concrete supply facility having a supply pipe connected to a concrete pump and supplying concrete discharged from the concrete pump to a high-rise building,

Sensing internal pressures at a corresponding position from a plurality of pressure sensors installed spaced apart from each other along a longitudinal direction of the concrete supply pipe; And

After the concrete pump is started, if one or more of the sensed internal pressures are out of the normal operating pressure range or out of the normal operating pressure change rate range, it is determined that the inside of the concrete supply pipe is blocked. Safe operation method of the concrete supply equipment comprising the step of stopping operation.
The method according to claim 15,

A concrete supplying facility including the concrete pump and the concrete supply pipe is horizontally simulated to perform a driving simulation experiment of the concrete supplying facility, and the normal operating pressure corresponding to the pressure sensors from the driving simulation test. And deriving a range or the normal operating pressure change rate range.
The method according to claim 15,

It is determined that the inside of the concrete supply pipe is blocked,

Safe operation method of the concrete supply pipe is determined that the concrete supply pipe is blocked before the portion of the concrete supply pipe outside the normal operating pressure range, or a specific pressure sensor is installed below the normal operating pressure change rate range.
The method according to claim 11,

It is determined that the inside of the concrete supply pipe is blocked,

A pressure sensor installed at the foremost of the pressure sensors in which the rate of change of the internal pressure or the internal pressure of the plurality of pressure sensors is lowered below the normal operating pressure range or the normal operating pressure change rate, and the internal pressure or the internal pressure of the plurality of pressure sensors A method for safe operation of a concrete supply facility, wherein it is determined that the concrete supply pipe is blocked between the pressure sensors installed at the rear of the pressure sensors whose change rate is higher than the normal operating pressure range or the normal operating pressure change rate range.
The method according to claim 15,

The normal operating pressure range, the safe driving method of the concrete supply equipment is determined by the maximum pressure corresponding to each pressure sensor.
The method according to claim 15,

After the concrete pump is started to reach the normal operating state, if the rate of change of the pressure detected from the pressure sensor is greater than the set value, it is determined that the concrete supply equipment is out of the normal operating range safe operation method of the concrete supply equipment .