JP2011001721A - Delivery management system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a delivery management system for appropriately stopping the travel of delivery trucks.SOLUTION: The delivery management system includes the delivery trucks 1, 2 including travel parts 15 moving on a plurality of laid travel rails 80; a horizontal jack 12 (a jacking means) for applying driving force to a bridge girder 100 along the travel rails 80 in a state of mounting the bridge girder 100 on the delivery trucks 1, 2; pressure sensors 22, 23 (reaction detecting means) for detecting the reaction of the horizontal jack 12 receiving when delivering the bridge girder 100; and a controller 25 (a control means) for controlling driving of the horizontal jack 12. The delivery management system is configured such that, when reaction data detected by the pressure sensors 22, 23 exceeds a predetermined set value, the controller 25 stops driving through the horizontal jack 12 to stop the delivery of the bridge girder 100.

Description

  The present invention relates to a delivery management system for executing a delivery method employed in the construction work of a bridge that bridges a bridge girder across a river or a railway.

  Conventionally, in the construction work of bridges, the sending method is used as a construction method when the space under the girder cannot be used, such as when a railway or road passes under the bridge girder to be built, or when straddling rivers or lakes. Has been. In the bridge girder delivery method, as shown in FIG. 11, the bridge girder 110 is directly transmitted using the already installed bridge girder 110, and when the bridge girder 110 is inclined as in this example, the temporary equipment 120 is used. Is formed. In the temporary facility 120, a horizontal traveling rail 130 is laid, and a bridge girder 100 is mounted on a delivery cart 150 that travels on the rail, and the delivery is performed. A hand-roller 140 is connected to the tip of the bridge girder 100, and a delivery carriage 150 located before and after the bridge girder 100 is sent out along the travel rail 130 in the direction indicated by the arrow.

  FIG. 12 is a side view conceptually showing a state in which the bridge girder 100 is mounted on the delivery cart 150. The delivery cart 150 corresponds to a plurality of travel rails 130 and includes a plurality of travel units 151 in a lateral direction orthogonal to the feed direction, and the travel units 151 are integrated with each other via a lower frame 153 and an upper frame 154. Is provided. The traveling unit 151 is provided with a vertical jack 152, thereby supporting the bridge girder 100. Then, a horizontal jack 155 is provided on the delivery cart 150 in the front of the traveling direction, and the bridge girder 100 on which the delivery cart 150 is mounted is pushed forward by holding the traveling rail 130 and extending.

JP 2003-293322 A

  In such a delivery method, a delivery management system that performs reaction force adjustment on the vertical jack 152 has been proposed by the above-mentioned Patent Document 1 or the like. The front and rear delivery carts 150 have a plurality of running portions 151 in the lateral direction, and each support the bridge girder 100 via a vertical jack 152. This is because the load reaction force is biased between the vertical jacks 152 during the feeding operation. However, the bias of the reaction force is not only a problem of the vertical jack 152 but also the propulsion means such as a plurality of horizontal jacks 155 provided for each traveling rail 130, for example. When an excessive load reaction force is generated in a part of the propulsion means arranged in the lateral direction, a hydraulic circuit that supplies hydraulic oil to the horizontal jack 155 or the like is damaged. There is also a risk that the bridge girder 100 is tilted.

  Therefore, in the conventional delivery method, an operator monitors the hydraulic pressure of the horizontal jack 155 and stops traveling when an abnormality is confirmed. However, such a stop by visual inspection or manual operation by the operator is accompanied by a risk of confirmation by the operator or a delay in operation, and further, a confirmation error may occur. On the other hand, after stopping the delivery, the cause of the problem will be solved and the vehicle will run again. However, if there is a delay in the stoppage, it will take time to recover for normal delivery. Work will be delayed.

  Accordingly, an object of the present invention is to provide a delivery management system for appropriately stopping the running of the delivery truck in order to solve such a problem.

  The delivery management system according to the present invention includes a delivery cart provided with a traveling unit that moves on a plurality of laid traveling rails, and the travel with respect to the bridge girder in a state where a bridge girder is mounted on the delivery cart. A propulsion unit that applies a propulsive force along the rail, a reaction force detection unit that detects a reaction force of the propulsion unit that is received when the bridge girder is sent out, and a control unit that controls the driving of the propulsion unit, The control means is characterized in that when the reaction force data detected by the reaction force detection means exceeds a preset value, the driving by the propulsion means is stopped and the sending of the bridge girder is stopped. And

Further, the sending management system of the present invention has distance detection means for detecting the travel distance of the bridge girder at the left and right positions of the bridge girder, and the control means is configured to detect the bridge girder based on detection data from the distance detection means. It is preferable that the inclination is calculated, and when the inclination value exceeds a preset value, the driving by the propulsion unit is stopped and the sending of the bridge girder is stopped.
In the delivery management system of the present invention, the traveling portion of the delivery carriage includes a lateral correction jack on a base member to which stoppers that contact from both sides in a lateral direction perpendicular to the longitudinal direction of the traveling rail are fixed. The vertical jack supporting the bridge girder is movable in the lateral direction by the output of the lateral correction jack, and the control means corrects the lateral direction while sending or stopping the driving by the propulsion means. It is preferable that the jack is driven to correct the inclination of the bridge girder.

  According to the present invention, the reaction force of the propulsion means that performs delivery is detected, and a preset value is detected and automatically stopped when the value protrudes, so that the structural member is damaged, etc. In order to avoid this problem, the sending of the bridge girder can be resumed immediately after the abnormal state is resolved.

1 is a configuration diagram conceptually showing an embodiment of a delivery management system. It is the front view which showed the front delivery cart and the bridge girder concretely. It is the side view which expanded and showed the A section of FIG. 2 regarding the forward delivery trolley | bogie. It is the figure which showed the horizontal jack data displayed on a monitor. It is the figure which showed the distance data of the bridge girder displayed on a monitor. It is the side view which showed the driving | running | working part of the sending trolley | bogie. It is the front view which showed the driving | running | working part of the sending trolley | bogie. It is the figure which showed notionally the lateral deviation correction work performed with a delivery trolley | bogie. It is the figure which showed the time of extension operation | movement of an endless carry. It is the figure which showed the time of contraction action of an endless carry. It is the figure which showed the construction condition of the delivery method. It is the side view which showed notionally the state which mounted the bridge girder on the sending trolley | bogie.

  Next, an embodiment of a delivery management system according to the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram conceptually showing the sending management system of the present embodiment. First, the delivery management system detects an abnormality related to movement in the delivery direction, appropriately stops the delivery cart, and can quickly resume delivery. For example, the sending in the construction shown in FIG. 11 is assumed.

  FIG. 1 is a diagram showing a simplified main part of the sending management system of the present embodiment. Also in the delivery method of the present embodiment, as shown in FIG. 11, a plurality of travel rails 80 are laid in parallel on a temporary facility or the like, and the delivery carts 1 and 2 provided for each travel rail 80 are used. Send out the bridge girder 100. Delivery carts 1 and 2 are arranged forward and backward with respect to the bridge girder 100, and are supported at front and rear positions in the longitudinal direction. A plurality of travel rails 80 are laid in parallel over the travel range of the delivery carts 1 and 2.

  In the delivery method, a plurality of propulsion means such as horizontal jacks for generating a propulsion force are provided in the lateral direction, and the girder 100 moves along the running rail 80 by driving to balance the output of each propulsion means. Is called. However, the balance may be lost due to traveling resistance or the like, or the bridge girder 100 itself may be inclined and an excessive load may be applied to some propulsion means. Therefore, in the delivery management system of the present embodiment, the reaction force generated in the propulsion means and the inclination of the bridge girder 100 are monitored, an abnormality is detected, and the delivery of the bridge girder 100 is stopped.

  The delivery carts 1 and 2 have a vertical jack 11 in a traveling portion 15 provided for each traveling rail 80, and the plurality of vertical jacks 11 balance the load at each support point by adjusting the stroke. On the other hand, in this embodiment, the horizontal jack 12 is used as a propulsion unit that outputs a propulsion force that moves the bridge girder 100 along the travel rail 80. The horizontal jack 12 has one end connected to the traveling unit 15 of the delivery carriage 1 from the rear and extends while the other end is gripped and fixed to the traveling rail 80, and the delivery truck 1 is pushed by pushing from the rear. The bridge girder 100 placed together with the carriage 2 is sent out.

  A driving pump 21 that supplies and discharges hydraulic oil is connected to the vertical jack 11 and the horizontal jack 12 of the delivery carts 1 and 2. And the pressure sensors 22 and 23 which measure the supply pressure of hydraulic oil are connected to the respective jacks 11 and 12, and the load reaction force applied to the vertical jack 11 is detected, and the propulsion reaction force at the time of delivery is detected. It can be done. Pressure sensors 22 and 23 provided in the vertical jack 11 and the horizontal jack 12 are connected to a controller 25. In the delivery management system, the detection signals of the sensors 22 and 23 are transmitted to the controller 25, and drive control of the drive pump 21 is performed by a control command signal generated based on the detection signals.

  In the delivery management system, a distance sensor 24 is provided at the delivery start position in order to measure the delivery amount and inclination of the bridge girder 100. The distance sensor 24 is a measuring device using a laser beam aiming at a reflector attached to the rear end of the bridge girder 100, and is installed on a temporary facility, and two units are provided so as to measure the positions of the left and right ends of the bridge girder 100, respectively. It has been. Accordingly, the controller 25 calculates the travel distance and the inclination based on the detection signals sent from the two distance sensors 24. In addition to such distance and inclination, the controller 25 is provided with a monitor that indicates the pressure of each of the jacks 11 and 12 described above, and the status at the time of delivery is displayed one by one.

  Further, the delivery management system is provided with a Web camera for photographing the situation in the vicinity of the delivery carriage 1 in front and the delivery situation of the entire bridge girder 100, and the obtained image is also displayed on the monitor of the controller 25. It is supposed to be. A network computer is connected to the sending management system, and the load values of the vertical jacks 11 and the horizontal jacks 12 displayed on the on-site monitor, the sending amount of the bridge girder 100, the image of the site displayed by the Web camera, and the like. Can be obtained via communication equipment by parties in remote locations

  By the way, the delivery carts 1 and 2 of this embodiment are provided with a lateral correction cylinder for correcting the posture of the bridge girder 100 when the bridge girder 100 is tilted in the lateral direction orthogonal to the delivery direction. FIG. 2 is a front view specifically showing the forward delivery cart 1 and the bridge girder 100 mounted thereon, and FIG. 3 is an enlarged view of the portion A in FIG. It is the side view shown. As shown in FIG. 2, the bridge girder 100 has three main girders 101 in the lateral direction, and the delivery cart 1 is configured to be supported at three places where the main girder 101 is located, and 6 in the lateral direction. The travel rails 80 provided in this way are also arranged in groups of two for each main girder.

  As shown in FIG. 3, the delivery cart 1 is provided with a traveling unit 15 at the front and rear along the traveling rail 80, the front traveling unit 15 has a clamp 13 that grips the traveling rail 80, and a rear traveling unit. Reference numeral 15 has a horizontal jack 12 and a clamp 13. Although not shown in detail here, a vertical jack is provided in each traveling unit 15, and the load balance at each traveling unit 15 position can be achieved by adjusting the stroke. The plurality of traveling units 15 are connected by a support structure unit 18 mounted thereon, and are configured to travel as a single delivery cart 1. The height of the bridge girder 100 is also adjusted by the support structure 18.

The traveling unit 15 is provided with four lateral correction jacks 16 on the front, rear, left and right sides, respectively. As shown in FIG. 1, the lateral correction jack 16 is connected to the drive pump 21, and a detection signal from a pressure sensor 26 provided for each is transmitted to the controller 25.
It is configured to expand and contract based on a command signal from the controller 25. Here, FIG.6 and FIG.7 is the side view which showed the driving | running | working part 15, and the front view seen from the advancing direction.
The running rail 80 is made of H steel placed horizontally, and the running unit 15 has wheels 31 rolling on the upper surface of the main body 32 at the front and rear of the main body 32. Is supported. The bridge girder 100 is mounted on the table 33 via the support structure 18.

  The traveling unit 15 has a stopper 34 for preventing the wheel from being removed because the wheel 31 slides in the lateral direction on the upper surface of the traveling rail 80. A plate 35 projecting in the lateral direction is provided before and after the main body 32, and the stopper 34 is fixed to both ends of the plate 35. Accordingly, the stopper 34 sandwiches the upper plate of the traveling rail 80 at a position 2 before and after the traveling unit 15 with a gap from both sides, and restricts lateral movement beyond a certain level. In addition, a lateral correction jack 16 is fixed to the traveling unit 15 with respect to the plate 35, and a rod is connected to the vertical jack 11 inside the main body 32. That is, in the main body 32, the vertical jack 11 that supports the table 33 is movable in the lateral direction with respect to the main body 32 by expansion and contraction of the lateral direction correction cylinder 12.

  Next, the operation of the delivery management system will be described. The controller 25 performs arithmetic processing based on the detection signals sent from the sensors 22 and 23, transmits a control command signal corresponding to the calculation result, and drives a plurality of vertical jacks 11 and horizontal jacks 12. By the extension operation of the horizontal jack 12, a propulsive force is given to the delivery carriage 1 in the traveling direction, and the bridge girder 100 is sent forward. In the meantime, by adjusting the stroke of the vertical jack 11, the load balance at each support point is achieved, and control is performed so that the load is not partially biased.

  Then, the reaction force of the horizontal jack 12 and the inclination of the bridge girder 100 are obtained, and the results are displayed on the monitor of the controller 25. As for the reaction force of the horizontal jack 12, a detection signal from a pressure sensor 23 provided for each is transmitted to the controller 25, and horizontal jack data relating to the horizontal jack as shown in FIG. 4 is displayed based on the detection signal. In the horizontal jack data, the reaction force is displayed as a bar graph for each of the six horizontal jacks 12 provided for each traveling unit 15, and the reaction force and the stroke are displayed as numerical values.

  Further, the distance sensor 24 installed at the sending start position detects the moving distance of the bridge girder 100, and the detection signal is transmitted to the controller 25. Based on the detection signal, the distance data as shown in FIG. 5 is displayed. Is done. The lateral movement distance of the bridge girder 100 is displayed as a distance A and a distance B, respectively, and a value obtained by the difference is also displayed. As the difference value is smaller, it can be seen that the bridge girder 100 is traveling in a balanced manner on the left and right, and conversely, the degree of inclination can be understood by increasing the difference value.

  In addition to this, the reaction force of the vertical jack is displayed on the monitor of the controller 25, and the sending status can be confirmed from the data by these. Then, the result of the monitoring by the supervisor who confirms this data is communicated wirelessly to the operator on the temporary facility, and the operator stops the transmission according to the situation, and restarts the transmission after the inspection and correction. However, there is a problem that human errors such as confirmation mistakes and contact mistakes are overlapped in the work after the operator's visual contact with the operator. Therefore, in the present embodiment, the controller 25 confirms the reaction force of the horizontal jack 12, and if the value exceeds a preset value, a control command signal is transmitted to the drive pump 21 and the horizontal jack 12 Stop driving.

  In the situation shown in FIG. 4, since the horizontal jack 12 with the number 1 has exceeded the threshold value, the driving of all the horizontal jacks 12 is stopped by the control command of the controller 25, and the movement of the bridge girder 100 by the delivery cart 1 is stopped. Stop. Thereafter, a worker on the temporary facility investigates the cause, contacts the supervisor after solving the problem, and performs an operation for resuming traveling on the controller 25 side.

  Furthermore, the controller 25 calculates the inclination angle of the inclination of the bridge girder 100 from the value shown in FIG. 5 and stops the driving of the horizontal jack 12 by the control command even when the angle exceeds a preset value. In this case, the inclination correction work of the bridge girder 100 is performed by the lateral correction jack 16 provided in the traveling unit 15 of the delivery carts 1 and 2. The controller 25 transmits a control command signal for each lateral correction jack 16 based on the calculated inclination of the bridge girder 100, and the drive pump 21 performs expansion / contraction driving based on the control command signal. Note that the correction of the inclination with respect to the bridge girder 100 may be performed as shown below without stopping the transmission and in some cases with the speed reduced.

Here, FIG. 8 is a diagram conceptually showing the inclination correction work performed in the delivery carts 1 and 2, and shows a state (a) in which the bridge girder is laterally displaced and a state (b) in which the lateral displacement is corrected. ing.
For example, it is assumed that an inclination occurs in the bridge girder 100 during sending work, and the front and rear sending carts 1 and 2 or both are in a state as shown in FIG. That is, as shown by the solid line from the center position indicated by the two-dot chain line, the left side stopper 34 hits the running rail 80. When the traveling unit 15 causes such a lateral shift, the bridge girder 100 is inclined, and in some cases, the reaction force of some horizontal jacks 12 is increased as described above.

  Therefore, the work of correcting the lateral shift shown in FIG. 8A is performed by stopping or decelerating the delivery of the bridge girder 100. Specifically, as shown in FIG. 8B, hydraulic pressure is introduced into the lateral correction jack 16 located in the laterally shifted direction to extend the rod, and a load is applied to the vertical jack 11 side that supports the bridge girder 100. Accordingly, the stopper 34 is pressed against the running rail 80 to take a reaction force, and the vertical jack 11 to which a load is applied moves laterally. Such an operation is performed in the same manner in the traveling units 15 arranged in the lateral direction as shown in FIG. 2, and the bridge girder 100 mounted thereon is moved as shown in FIG. As shown in b), the inclination is corrected by moving from the position of the two-dot chain line to the position indicated by the solid line. Then, after correcting the inclination, the horizontal jack 12 is driven to restart the sending.

Incidentally, the propulsion means for moving the bridge girder 100 includes the endless carry shown in FIGS. 9 and 10 in addition to the horizontal jack 12 as described above. FIG. 9 shows the endless carry during the extension operation, and FIG. 10 shows the endless carry in the contraction operation.
The horizontal jack 12 that applies a propulsive force to the bridge girder 100 generates a propulsive force only during expansion / contraction extension operation, and thus performs an intermittent feed operation. However, according to the endless carry 40, continuous feed is possible.

  When the endless carry 40 is used as the propulsion means, a plurality of wire ropes 90 are stretched along the traveling rail 80, and the endless carry 40 generates propulsive force so as to cross the wire rope 90. The endless carry 40 has a front chuck 41 and a rear chuck 42 for gripping the wire rope 90 at the front and rear positions, and further includes a front jack 43 connected to the front chuck 41 and a rear jack 44 connected to the rear chuck 42. Are fixed to the pressing surface 45 applied to the action surface 85 of the delivery cart 1. The action surface 85 that presses against the pressing surface 45 may be on the bridge girder 100.

  9A, the front jack 43 and the rear jack 44 are both contracted, while the front chuck 41 is in a released state and the rear chuck 42 is in a gripping state in which the wire rope 90 is tightened. It has become. In such a state, as shown in FIG. 9B, the front jack 43 and the rear jack 44 are extended, and the front chuck 41 is moved by the strokes of both jacks 43 and 44 as shown in FIG. 9C. Sent forward. Further, at this time, the pressing surface 45 pushes the action surface 85 forward by the extension operation of the rear jack 44, the delivery carriage 1 moves, and the bridge girder 100 is sent out. The reaction force to the rear jack 44 is supported by the chuck 42 after gripping the wire rope 90.

  In the state shown in FIG. 10A in which the front jack 43 and the rear jack 44 have finished extending, the front chuck 41 is then switched to a gripping state in which the wire rope 90 is tightened, and the rear chuck 42 is in a released state. Become. Then, as shown in FIG. 10B, the front jack 43 and the rear jack 44 are contracted, and the rear chuck 42 is moved forward by the stroke of both jacks 43, 44 as shown in FIG. Sent. Also at this time, the pressing surface 45 pushes the action surface 85 forward by the contraction operation of the front jack 43, the delivery carriage 1 moves, and the bridge girder 100 is sent out. The front chuck 41 that holds the wire rope 90 supports the reaction force applied to the front jack 43.

And since it returns to the state shown to Fig.9 (a) again, the above operations are repeated. At this time, since the endless carry 40 generates a propulsive force by both expansion and contraction of the front jack 43 and the rear jack 44, continuous feeding is possible.
Further, even in the endless carry 40, a part of the load may become excessive. At that time, the sending of the bridge beam 100 is temporarily stopped, and the sending is resumed after the problem is solved. Also in this case, as described above, the controller 25 shown in FIG. 1 detects the hydraulic pressure for the front jack 44 and the rear jack 43 of the endless carry 40, and automatically stops based on the detection signal. Values from each such sensor are also displayed on the monitor.

  When the endless carry 40 is used, the horizontal jack 12 shown in FIG. 3 is not used for generating a propulsive force, and is provided only in the traveling unit 15 corresponding to the traveling rails 80 at both lateral ends, for example. When the bridge girder 100 is tilted, the horizontal correction jack 16 of the traveling unit 15 can be used as described above, and the horizontal jack 12 can be used to correct the tilt.

  In the delivery management system of the present embodiment, reaction forces such as the horizontal jack 12 and the endless carry 40 which are propulsion means are detected, and when abnormal, a preset value is detected and automatically stopped. Therefore, since the trouble which makes subsequent work difficult, such as damaging a hydraulic circuit, is not produced, sending out of a bridge girder can be restarted immediately after eliminating an abnormal state. Since a rapid response to such an abnormality is performed by the automatic control of the controller 25, it is possible to eliminate human errors such as oversight of the hydraulic gauge and reading errors.

  Further, even when the sending bridge girder 100 is tilted, the tilt of the bridge girder 100 is corrected by detecting the situation and automatically stopping the movement. This prevents further inclination and enables movement along the running rail 80. Further, when an excessive load is applied to a part of the vertical jack 11 in addition to the horizontal jack 12 due to the inclination of the bridge girder 100, such an abnormality can be solved by correcting the inclination. In the present embodiment, the inclination correction can be automatically performed by using the lateral direction correction jack 16 provided in the traveling unit 15.

  As mentioned above, although embodiment of the transmission management system concerning this invention was described, this invention is not limited to this, A various change is possible in the range which does not deviate from the meaning.

1, 2 Delivery cart 11 Vertical jack 12 Horizontal jack 15 Traveling section 16 Lateral correction jacks 22, 23 Pressure sensor 24 Distance sensor 25 Controller 80 Traveling rail 100 Bridge girder

Claims (3)

A delivery cart provided with a traveling unit that moves on a plurality of laid traveling rails, and a propulsion that imparts a propulsive force along the traveling rail to the bridge girder in a state where a bridge girder is mounted on the delivery cart Means, a reaction force detection means for detecting a reaction force of the propulsion means received when the bridge girder is sent out, and a control means for controlling the drive of the propulsion means,
The control means is characterized in that when the reaction force data detected by the reaction force detection means exceeds a preset value, the driving by the propulsion means is stopped and the sending of the bridge girder is stopped. Sending management system. In the delivery management system according to claim 1,
Distance detecting means for detecting the distance traveled by the bridge girder at the left and right positions of the bridge girder, and the control means calculates the inclination of the bridge girder based on the detection data from the distance detecting means, A delivery management system characterized in that when the set value is exceeded, the driving by the propulsion means is stopped and the delivery of the bridge girder is stopped. In the delivery management system according to claim 2,
The traveling unit of the delivery carriage includes a lateral correction jack on a base member to which stoppers that contact from both sides in a lateral direction perpendicular to the longitudinal direction of the traveling rail are fixed, and a vertical jack that supports a bridge girder is in the lateral direction. It can be moved laterally by the output of the correction jack,
The control means is configured to drive the lateral correction jack while sending or stopping the driving by the propulsion means to correct the inclination of the bridge girder. .

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