JP2007100314A - Erector for assembling segment of shield machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an erector for assembling segments of a shield machine capable of keeping balance of center of gravity in a satisfactory condition even when assembling heavy segments. <P>SOLUTION: In this erector 1 for assembling segments of the shield machine provided with one hanging beam 5 for gripping the segment 4 and a counterweight 6 at a position where it opposes to the hanging beam 5 in a rotary frame 3 provided rotatably in a shield main body 2, the counterweight 6 is provided in the rotary frame 3 so as to move freely in the radial direction. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a segment assembling erector of a shield machine, and more particularly to a segment assembling erector capable of downsizing an actuator.

  The segment assembly erector of the shield machine includes a ring-shaped rotary frame that rotates around the central axis of the shield machine, and a suspension beam that is provided on the rotary frame so as to be movable in the radial direction via an arm and an extendable guide rod. The suspension beam is provided so as to be movable in the front-rear direction of the shield machine through a guide rod, and includes a sliding frame for gripping the segment. Here, if the right-handed orthogonal coordinates are set inside the erector with the center of the rotating frame as the origin and the extending direction of the suspended beam as the X axis and the rotating frame as the Z axis, the center of gravity position of the rotating frame is approximately XY. Although it exists near the origin, there are many main parts such as a suspended beam on the positive side of the X-axis, so the center of gravity of the erector is on the positive side of the X-axis. Here, in order to assemble the segment, if the segment is gripped by the suspension beam and the suspension beam is moved to the segment assembly position radially outward, the center of gravity moves further to the plus side of the X axis, The driving moment for rotating increases.

  By the way, the state where the driving moment for rotating the rotating frame is minimized is that the center of gravity exists on the minus side of the X axis when the hanging beam position is the minimum value of the X axis without load, and the hanging beam position is This is a case where the center of gravity exists on the plus side of the X-axis when the segment is held at the segment assembly position, and the deflection width of the center of gravity is equal on the plus side and the minus side. In order to approach this state, a counterweight is usually installed at a position facing the suspended beam on the rotating frame.

Japanese Utility Model Publication No. 5-57095 JP-A-11-107696

  By the way, in recent years, with increasing depth of the shield method, the thickness of the segment tends to increase, and in order to improve the construction efficiency, the width of the segment and the division angle tend to increase. The volume increases and the segment weight increases. As a result, it is assumed that the position of the center of gravity of the erector during segment assembly moves extremely to the plus side of the X axis. In this case, there is a problem that it is assumed that the required weight of the counterweight is increased, the counterweight is enlarged, and it is difficult to install the counterweight on the rotating frame.

  Accordingly, an object of the present invention is to solve the above-described problems and provide a segment assembling erector of a shield machine capable of maintaining a good balance of the center of gravity even when a heavy segment is assembled.

  In order to solve the above-described problems, the present invention provides a shield machine in which a suspension frame rotatably provided on a shield body is provided with one suspension beam for gripping a segment and a counterweight at a position facing the suspension beam. In the segment assembling erector, the counter weight is provided on the rotating frame so as to be movable in the radial direction.

  Counter weight moving means for reciprocating the counter weight in the radial direction, hanging beam movement detecting means for detecting the moving amount of the hanging beam in the radial direction, and a detection value obtained from the hanging beam movement detecting means A segment assembling erector may be configured by including control means for controlling the counterweight moving means.

  Counter weight moving means for reciprocating the counter weight in the radial direction; hanging beam movement detecting means for detecting the moving amount of the hanging beam in the radial direction; segment gripping detecting means for detecting the gripping state of the segment; The segment assembly erector may comprise a detection value obtained from the hanging beam movement detection means and a control means for controlling the counterweight movement means in accordance with a segment load inputted in advance.

  Further, counter weight moving means for reciprocating the counter weight in the radial direction, hanging beam movement detecting means for detecting the moving amount of the hanging beam in the radial direction, and the load amount of the segment gripped by the hanging beam. The segment assembling erector may be configured to include a load detecting means for detecting, and a control means for controlling the counter weight moving means in accordance with the detected value obtained from the hanging beam movement detecting means and the load detecting means.

  Counter weight moving means for reciprocating the counter weight in the radial direction, rotational driving load detecting means for detecting a driving load when the rotating frame is rotationally driven, and a detection value obtained from the rotational driving load detecting means And a control means for controlling the counterweight moving means may constitute a segment assembling erector.

  Further, a counterweight moving means for reciprocating the counterweight in the radial direction, a hanging beam movement detecting means for detecting a moving amount of the hanging beam in the radial direction, and a driving load for rotating the rotating frame are provided. The segment assembly erector is configured to include a rotational drive load detecting means for detecting, and a control means for controlling the counter weight moving means in accordance with a detection value obtained from the suspended beam movement detecting means and the rotational drive load detecting means. May be.

  According to the present invention, it is possible to maintain a good balance of the center of gravity even when a heavy segment is assembled.

  Preferred embodiments of the present invention will be described with reference to the accompanying drawings.

  As shown in FIGS. 1 and 2, the segment assembly erector 1 includes a rotating frame 3 that is rotatably provided on the shield body 2, a suspension beam 5 that is provided on the rotating frame 3 and grips the segment 4, The rotating frame 3 includes a counterweight 6 that is provided at a position facing the suspension beam 5 so as to be movable in the radial direction (X-axis direction).

  The rotating frame 3 is formed in a ring shape, and is rotatable by supporting an outer peripheral surface by a plurality of guide rollers 7. As shown in FIG. 2, the guide roller 7 is provided on the rib 8 of the shield body 2 so as to be rotatable about an axis parallel to the rotation center axis of the rotary frame 3. It has the collar part 9 engaged with. In addition, an internal gear 11 is provided on the front surface of the rotating frame 3 via a mounting ring 10. The internal gear 11 is meshed with an actuator 12 provided in the shield body 2, and rotates the rotating frame 3 by receiving a driving force from the actuator 12. Specifically, the actuator 12 includes a hydraulic motor. The actuator 12 is connected to a later-described hydraulic pressure supply device 13 via a hydraulic pipe 14, and is driven by receiving hydraulic pressure from the hydraulic pressure supply device 13.

  As shown in FIGS. 1 and 2, the suspension beam 5 is provided on the first support arm 15 of the rotating frame 3 through the first guide rod 16 so as to be movable in the radial direction. The first support arm 15 is formed on the rotary frame 3 so as to extend toward the wellhead side (backward in the digging direction), and slidably supports the first guide rod 16 at the tip. The suspension beam 5 is provided at one end of the first guide rod 16, and the suspension beam 5 moves in the radial direction when the first guide rod 16 slides with respect to the first support arm 15. ing. The suspension beam 5 and the first support arm 15 of the rotating frame 3 are connected via a first hydraulic cylinder 17. The first hydraulic cylinder 17 is connected to the hydraulic supply device 13 via a hydraulic pipe 18 and is driven by receiving hydraulic pressure from the hydraulic supply device 13.

  The counterweight 6 is for adjusting the balance of the center of gravity of the erector 1, and is provided on the second support arm 19 of the rotary frame 3 so as to be movable in the radial direction via the second guide rod 20. The second support arm 19 is formed on the rotary frame 3 so as to extend toward the wellhead side, and supports the second guide rod 20 slidably at the tip. A counterweight 6 is provided on one end side of the second guide rod 20, and the counterweight 6 moves in the radial direction when the second guide rod 20 slides with respect to the second support arm 19. Has been. Further, the counterweight 6 and the second support arm 19 of the rotating frame 3 are connected via a second hydraulic cylinder 21. The second hydraulic cylinder 21 is counterweight moving means for reciprocating the counterweight 6 in the radial direction from the rotating frame 3. The second hydraulic cylinder 21 is connected to the hydraulic supply device 13 via a hydraulic pipe 22 and is driven by receiving hydraulic pressure from the hydraulic supply device 13.

  The hydraulic pressure supply device 13 is configured to operate in response to an electrical signal from an operation panel (not shown). Specifically, the hydraulic pressure supply device 13 includes a suspension beam movement detection unit 25 that detects the amount of movement of the suspension beam 5 in the radial direction, and a load detection unit that detects the load amount of the segment 4 held by the suspension beam 5. 26, and a control device (control means) 23 for outputting a command value for controlling the second hydraulic cylinder 21 serving as a counterweight moving means in accordance with detection values obtained from the hanging beam movement detecting means 25 and the load detecting means 26. . The suspension beam movement detection means 25 is composed of a flow rate sensor that detects the movement amount of the suspension beam 5 from the amount of hydraulic pressure supplied to the first hydraulic cylinder 17. The load detection means 26 is a weight sensor that is provided on the hanging beam 5 and measures the weight of the segment 4 gripped by the hanging beam 5. The control device 23 adjusts the position of the counterweight 6 so that the position of the center of gravity is appropriate according to the amount of movement of the suspension beam 5 detected by the suspension beam movement detection means 25 and the load amount of the segment 4 detected by the load detection means 26. The amount of movement in the radial direction is calculated, and the calculation result is output as a command value to the hydraulic pressure supply device 13.

  The load detection means 26 is a segment gripping detection means (not shown) including a load input means (not shown) such as a keyboard and a proximity sensor or a limit switch for detecting whether or not the segment 4 is being gripped. ). In this case, the load amount of the segment 4 may be input to the control device 23 using the load input means. The control device 23 has a storage unit (not shown) for storing the load amount input from the load input unit, and the segment 4 previously input to the detection value obtained from the hanging beam movement detection unit 25 and the storage unit. The counterweight moving means 21 may be controlled according to the load.

  Further, the load detecting means 26 may be omitted and the load amount of the segment 4 may not be detected. In this case, the control device 23 may control the counter weight moving unit 21 in accordance with the detection value obtained from the suspended beam movement detecting unit 25.

  Next, the operation of this embodiment will be described.

  As shown in FIG. 3A, when the segment 4 is placed at a predetermined segment gripping position, the hanging beam 5 is moved radially outward to approach the segment 4 as shown in FIG. 3B. . At this time, the control device 23 shown in FIG. 2 moves the counter weight 6 radially outward in accordance with the amount of movement of the hanging beam 5 detected by the hanging beam movement detecting means 25. Thereby, the movement of the center of gravity accompanying the movement of the suspension beam 5 can be suppressed or prevented.

  Thereafter, the segment 4 is gripped by the suspension beam 5 and the suspension beam 5 is returned inward in the radial direction, and the rotary frame 3 is rotated by driving the actuator 12 shown in FIG. Specifically, when the segment 4 is gripped by the suspension beam 5, the load of the segment 4 is detected by the load detection means 26, and the counterweight 6 is moved radially outward in accordance with the detected load amount. Thereby, the center of gravity moved to the suspension beam 5 side by the weight of the segment 4 can be returned to the counterweight 6 side, and the center of gravity balance can be kept good. When the rotating frame 3 is rotated by a predetermined angle, the suspension beam 5 is moved radially outward to move the segment 4 to a predetermined assembly position, and the counterweight 6 is further moved radially outward to balance the center of gravity. Assemble segment 4.

  Thereafter, the grip of the segment 4 is released, the suspension beam 5 is moved inward in the radial direction, the counterweight 6 is returned inward in the radial direction so as to balance the center of gravity, and then the rotary frame 3 is rotated and suspended. The beam 5 is prepared for the next segment (not shown) according to the segment gripping position.

  As described above, the counter frame 6 is provided on the rotary frame 3 so as to be movable in the radial direction, and the counter weight 6 is moved in accordance with the radial movement of the suspension beam 5 and the change in the load of the segment 4. Since the assembling erector 1 is configured, even when the heavy segment 4 is assembled, the balance of the center of gravity can be kept good by moving the counterweight 6 radially outward.

  Further, a counterweight moving means (second hydraulic cylinder 21) for reciprocating the counterweight 6 in the radial direction from the rotating frame 3, a hanging beam movement detecting means 25 for detecting the moving amount of the hanging beam 5 in the radial direction, A load detecting means 26 for detecting the load amount of the segment 4 held by the hanging beam 5, and a control device 23 for controlling the counter weight moving means in accordance with the detection values obtained from the hanging beam movement detecting means 25 and the load detecting means 26. Since the segment assembling erector 1 is configured as described above, it is possible to easily maintain a good balance of the center of gravity with a simple structure.

  The hanging beam movement detecting means 25 is composed of a flow sensor, but is not limited to this, and may be a stroke sensor that directly detects the position of the hanging beam 5 or another type of sensor. Good.

  The load detecting means 26 is composed of a weight sensor that measures the weight of the segment 4 gripped by the suspension beam 5, but is a hydraulic sensor that detects the load amount of the segment 4 from the hydraulic load of the first hydraulic cylinder 17. There may be.

  Furthermore, the segment assembly erector 1 is provided with the load detection means 26 for detecting the load amount of the segment 4 held by the suspension beam, but instead of this, as shown in FIG. Rotation drive load detecting means 24 for detecting the drive load of the actuator 12 when the actuator is rotationally driven may be provided. In this case, when the control device 23 supplies hydraulic pressure to the actuator 12 to rotate the rotating frame 3, the control load 23 moves the counterweight 6 in the radial direction so as to reduce the load detected by the rotational drive load detection means 24. A balance function should be provided. The rotational drive load detection means 24 may be a hydraulic sensor that measures the hydraulic pressure supplied to the actuator 12.

  Specifically, when driving the actuator 12, the hydraulic pressure supplied to the actuator 12 is measured by the rotational drive load detecting means 24, and when the hydraulic load is equal to or greater than a predetermined value, the counterweight 6 is moved radially outward. Thus, the hydraulic pressure is supplied to the second hydraulic cylinder 21. Thereby, the center of gravity moved to the suspension beam 5 side by the weight of the segment 4 can be returned to the counterweight 6 side, and the center of gravity balance can be kept good.

  Thus, the counterweight moving means (second hydraulic cylinder 21) for reciprocating the counterweight 6 in the radial direction from the rotary frame 3, and the hanging beam movement detecting means 25 for detecting the moving amount of the hanging beam 5 in the radial direction. A rotation driving load detecting means 24 for detecting a driving load when the rotating frame 3 is driven to rotate, and a counterweight moving means 21 in accordance with detection values obtained from the suspended beam movement detecting means 25 and the rotation driving load detecting means 24. Even if the segment assembly erector is configured by including the control device (control means) 27 for controlling the control, it is possible to easily maintain a good balance of the center of gravity with a simple structure.

  Further, when the segment assembling erector has the rotational drive load detecting means 24, the suspended beam movement detecting means 25 may be omitted. In this case, the control device 27 may control the counter weight moving unit 21 in accordance with the detection value obtained from the rotational drive load detecting unit 24.

  Although the actuator 12 is made of a hydraulic motor, it may be made of an electric motor or another drive device. In this case, the rotational drive load detection means 24 may be constituted by a load sensor or the like that detects the load of the drive device.

It is a rear view of the segment assembly erector of the shield machine which shows preferred embodiment of this invention. It is a side view of the segment assembly erector. (A) is a schematic rear view showing the relationship between the segment placed at the gripping position and the segment assembly erector, (b) is a schematic rear view of the segment assembly erector gripping the segment, (c) FIG. 3 is a schematic rear view of a segment assembling erector in which a segment is rotated to the vicinity of an assembling position. It is a side view of the mentor for mentor assembly showing other embodiments.

Explanation of symbols

1 Erecter for segment assembly 2 Shield body 3 Rotating frame 4 Segment 5 Hanging beam 6 Counterweight

Claims (6)

  A segment assembly erector of a shield machine in which a rotating frame provided rotatably on a shield body is provided with one hanging beam for gripping the segment and a counterweight at a position facing the hanging beam. A segment assembly erector of a shield machine, wherein the counterweight is provided to be movable in the radial direction.   Counter weight moving means for reciprocating the counter weight in the radial direction, hanging beam movement detecting means for detecting the moving amount of the hanging beam in the radial direction, and a detection value obtained from the hanging beam movement detecting means The segment assembly erector of the shield machine according to claim 1, further comprising control means for controlling the counterweight moving means.   Counter weight moving means for reciprocating the counter weight in the radial direction, hanging beam movement detecting means for detecting the moving amount of the hanging beam in the radial direction, segment gripping detecting means for detecting the gripping state of the segment, and The segment assembly erector of the shield machine according to claim 1, further comprising a control means for controlling the counter weight moving means in accordance with a detection value obtained from the suspended beam movement detecting means and a segment load inputted in advance.   Counterweight moving means for reciprocating the counterweight in the radial direction, hanging beam movement detecting means for detecting the moving amount of the hanging beam in the radial direction, and detecting the load amount of the segment held by the hanging beam The segment assembly erector of the shield machine according to claim 1, further comprising: a load detection means; and a control means for controlling the counterweight movement means in accordance with detection values obtained from the suspended beam movement detection means and the load detection means. .   Counter weight moving means for reciprocating the counter weight in the radial direction, rotational driving load detecting means for detecting a driving load when the rotating frame is rotationally driven, and a detection value obtained from the rotational driving load detecting means The segment assembly erector of the shield machine according to claim 1, further comprising control means for controlling the counterweight moving means. Counter weight moving means for reciprocating the counter weight in the radial direction, hanging beam movement detecting means for detecting the amount of movement of the hanging beam in the radial direction, and a driving load for rotating the rotating frame. The shield machine according to claim 1, further comprising: a rotational drive load detecting means; and a control means for controlling the counter weight moving means in accordance with a detection value obtained from the suspended beam movement detecting means and the rotational drive load detecting means. Segment assembly erector.

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