Safety protection system for fully automatic transportation of segments

Abstract

The present invention discloses a safety protection system for fully automatic transportation of pipe segments, comprising: a vertical transportation protection frame, fixedly installed in a vertical shaft leading to an underground tunnel; a horizontal transportation auxiliary support beam, movably installed at the front end of a pipe segment feeder; a guide wheel mechanism, fixedly installed around a gripping mechanism; a bottom anti-fall safety door, installed at the bottom of the protection frame, and equipped with an infrared sensing device and an audible and visual alarm device; an emergency stop button, arranged in a control mechanism, which controls and connects the pipe segment feeder, the lifting mechanism, the gripping mechanism, the safety door, and the audible and visual alarm device. Compared with the traditional overhead crane hoisting method that uses a sling as a safety protection measure, the safety protection system of the present invention can control the entire pipe segment hoisting process within a stable protection frame, and adds fall protection, personnel entry and exit protection, and emergency stop protection, which greatly increases the safety of the pipe segment transportation process and lays a solid foundation for the safe and orderly development of tunnel construction.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel engineering, and in particular to a safety protection system for fully automatic transportation of pipe segments. Background Art

[0002] With the large-scale construction of urban subways, railways, large-scale cross-river tunnel projects and water diversion projects in my country, the amount of tunnel engineering projects has also been rising steadily. At the same time, the requirements for tunnel construction efficiency have also become higher and higher. Among them, the transportation of materials for shield construction is a key process that restricts the efficiency of tunnel construction. Improving the efficiency of material transportation is imminent.

[0003] The traditional method of crane-lifting pipe segments uses only two straps to secure the segments to the crane hook, serving as the sole securing method and safety precaution. After the crane is lifted, the segments hang suspended overhead with no protection at the bottom. During the process of lifting the segments down to the wellhead, personnel at the wellhead must confirm and adjust the segment's position. This often results in personnel entering the segment's lifting position, resulting in a lack of personnel protection and protection against falling segments. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention provides a safety protection system for fully automatic transportation of pipe segments, which adds safety protection measures such as anti-fall protection, personnel protection and emergency stop protection.

[0005] The technical solutions for achieving the purpose of the present invention are:

[0006] A safety protection system for fully automatic transportation of pipe segments, comprising:

[0007] A vertical transport protection frame is fixedly installed in a vertical shaft leading to an underground tunnel, wherein the interior of the protection frame forms a space for vertical transport of segments;

[0008] Horizontal transport auxiliary joist, movably installed at the front end of the segment feeder, used to support the segments on the segment feeder and extend the segments to the top of the protective frame;

[0009] A guide wheel mechanism is fixedly mounted around the grabbing mechanism. The grabbing mechanism is escalably mounted on the top of the protective frame via a lifting mechanism. The guide wheel mechanism is used to grab the segments on the segment feeder and vertically transport the segments along the inner space of the protective frame. A vertical track is provided in the protective frame. The guide wheel mechanism moves along the vertical track and plays a guiding role in the overall lifting and lowering process of the grabbing mechanism.

[0010] A bottom anti-fall safety door is installed at the bottom of the protective frame and is equipped with an infrared sensor and an audible and visual alarm device. The infrared sensor is used to sense unsafe factors below the safety door. When an unsafe factor is sensed, the safety door is controlled to remain closed and the audible and visual alarm device is controlled to sound an alarm.

[0011] An emergency stop button is provided in the control mechanism, and the control mechanism controls and connects the pipe segment feeder, the lifting mechanism, the grabbing mechanism, the safety door and the sound and light alarm device.

[0012] As a preferred embodiment of the present invention, the pipe segment feeding machine includes a base frame, a transport beam and a translation cylinder. The base frame is fixed on the ground, and the pipe segments are placed on the transport beam. One end of the translation cylinder is fixed to the tail end of the base frame, and the other end of the translation cylinder is fixed to the transport beam. The transport beam loaded with pipe segments is pushed toward the front end of the base frame by extending the translation cylinder. The auxiliary support beam is retractable or foldable and is installed at the front end of the base frame and corresponds to the bottom of the transport beam.

[0013] As a preferred embodiment of the present invention, the protective frame is a steel frame with a rectangular cross-section, the vertical rails are arranged at the four inner corners, the cross-section of the grabbing mechanism is rectangular, and the guide wheel mechanism is arranged at the four corner positions at the top and bottom corresponding to the vertical rails.

[0014] Due to the adoption of the above technical solution, the present invention has the following beneficial effects:

[0015] Compared with the traditional crane-driven lifting method that uses slings as a safety protection measure, the entire process of pipe segment lifting can be controlled within a stable protection frame, and fall protection, personnel entry and exit protection, and emergency stop protection are added, which greatly increases the safety of pipe segment transportation and lays a solid foundation for the safe and orderly development of tunnel construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A schematic diagram of a vertical transport protection frame in a safety protection system provided in an embodiment of the present invention.

[0018] Figure 2 Schematic diagram of the gripping mechanism of the fully automatic segment transportation system.

[0019] Figure 3 A schematic diagram of a guide wheel mechanism in a safety protection system provided in an embodiment of the present invention.

[0020] Figure 4 Schematic diagram of the segment feeder of the fully automatic segment transportation system.

[0021] Figure 5 A schematic diagram of the horizontal transport auxiliary joist in the safety protection system provided in an embodiment of the present invention.

[0022] Figure 6 for Figure 1 A partially enlarged schematic diagram of the bottom of the .

[0023] Figure 7 This is a schematic diagram of the installation of a safety door in the safety protection system provided by an embodiment of the present invention.

[0024] Figure 8 Schematic diagram of the actuator of the safety door in the safety protection system provided by an embodiment of the present invention.

[0025] Figure 9 This is a schematic overall plan view of the safety door in the safety protection system provided by an embodiment of the present invention.

[0026] Figure 10 This is a schematic diagram of the overall elevation of the safety door in the safety protection system provided by an embodiment of the present invention.

[0027] The corresponding relationships marked in the figure are as follows:

[0028] 1-protective frame; 11-vertical rail; 2-auxiliary support beam; 21-rotating cylinder; 3-guide wheel mechanism; 4-safety door; 41-servo motor; 42-gear; 43-rack; 44-T-type slide rail; 5-segment feeder; 51-base frame; 52-transport beam; 53-translational cylinder; 6-grabbing mechanism; A-sensing area; 7-segment transport vehicle; 8-lifting mechanism; 81-wire rope. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of this patent to clearly and completely describe the technical solutions in the embodiments of this patent. Obviously, the embodiments described are only part of the embodiments of this patent, not all of them. Based on the embodiments of this patent, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this patent.

[0030] See also Figures 1 to 10The present invention provides a safety protection system for fully automatic transportation of pipe segments, which is implemented based on the fully automatic transportation system of pipe segments, so as to strengthen the anti-fall protection, personnel protection and emergency stop protection measures when the pipe segments are transported in the fully automatic transportation system.

[0031] The fully automatic transport system for pipe segments mainly includes a pipe segment feeder 5, a lifting mechanism 8, a grabbing mechanism 6 and an automatic control mechanism. The automatic control mechanism controls the operation of each actuator in the pipe segment feeder 5, the lifting mechanism 8 and the grabbing mechanism 6, so that the pipe segment feeder 5 can transport the pipe segments on the ground to the top of the vertical shaft leading to the underground tunnel. The lifting mechanism 8 can adopt a winch, which is fixed above the vertical shaft through a ground bracket. The winch is fixed on the top of the ground bracket. The lower end of the traction wire rope 81 of the winch is fixedly connected to the top of the grabbing mechanism 6. A motor-driven grab hook is installed at the bottom of the grabbing mechanism, which is used to grab the pipe segments on the pipe segment feeder 5 and lower them vertically along the vertical shaft through the lifting mechanism 8 until they reach the underground tunnel. A pipe segment transport vehicle 7 is running in the tunnel to receive the pipe segments and transport them into the tunnel for installation.

[0032] The safety protection system for fully automatic transportation of pipe segments of the present invention consists of five parts: a vertical transportation protection frame 1, a horizontal transportation auxiliary support beam 2, a horizontal transportation auxiliary support beam 3, a bottom anti-fall safety door 4 and an emergency stop button.

[0033] The vertical transportation protection frame 1 is fixedly installed in the vertical shaft leading to the underground tunnel, and the interior of the protection frame 1 forms a space for vertical transportation of pipe segments; the protection frame 1 is a steel frame with a rectangular cross-section, the steel frame is 10 meters long, 4.4 meters wide, and 40 meters high. The internal space is used for vertical transportation of pipe segments, and the protection frame 1 is provided with the vertical rails 11 at the four inner corners.

[0034] The horizontal transport auxiliary joist 2 is movably mounted at the front end of the segment feeder 5 to support the segments on the segment feeder 5 and extend the segments to the top of the protective frame 1; Figure 4 As shown, the pipe segment feeder 5 includes a base frame 51, a transport beam 52 and a translation cylinder 53. The base frame 51 is fixed on the ground, and the pipe segments are placed on the transport beam 52. One end of the translation cylinder 53 is fixed to the rear end of the base frame 51, and the other end of the translation cylinder 53 is fixed to the transport beam 52. The transport beam 52 loaded with pipe segments is pushed toward the front end of the base frame 51 by extending the translation cylinder 53. The auxiliary support beam 2 can be retracted or folded and installed at the front end of the base frame 51 and corresponds to the bottom of the transport beam 52. Its function is to provide bottom support for the transport beam 52 extending from the front end of the base frame 51. The auxiliary support beam 2 in this embodiment is as shown in FIG. Figure 5As shown, it is normally 90 degrees perpendicular to the front end of the pipe segment feeder 5, and one end is rotatably connected to the front end of the pipe segment feeder 5, and a rotating cylinder 21 is installed at the connection. The rotating cylinder 21 is controlled by the control mechanism to realize the rotation of the auxiliary support beam 2. When in use, the auxiliary support beam 2 can be rotated 90 degrees to a position parallel to the pipe segment feeder 5 and symmetrically located on both sides of the bottom of the transport beam 52. After the transport beam 52 is pushed out of the front end of the base frame 51 under the extension action of the translation cylinder 53, it continues to move forward above the auxiliary support beam 2. The front end of the auxiliary support beam 2 extends into the protective frame 1, so the transport beam 52 can be safely transported to the protective frame 1 and is located directly below the quasi-grabbing mechanism 6.

[0035] Under the action of the lifting mechanism 8, the grabbing mechanism 6 can lower and grab the pipe segment on the transport beam 52. After the pipe segment is grabbed, the transport beam 52 returns to the base frame 51 under the retraction action of the translation cylinder 53, and the auxiliary support beam 2 is rotated and retracted to both sides of the base frame 1 to avoid affecting the vertical lowering of the pipe segment.

[0036] like Figure 2 As shown, the cross-section of the grabbing mechanism 6 is rectangular, which is adapted to the internal space shape of the protective frame 1, and guide wheel mechanisms 3 are provided at the four corner positions of the top and bottom of the grabbing mechanism 6 corresponding to the vertical rails 11 at the four corners of the protective frame 1.

[0037] The guide wheel mechanism 3 is fixedly installed around the grabbing mechanism 6, and the grabbing mechanism 6 can be lifted and lowered on the top of the protective frame 1 through the lifting mechanism 8. It is used to grab the pipe segments on the pipe segment feeder 5 and transport the pipe segments vertically along the internal space of the protective frame 1. A vertical track 11 is provided in the protective frame 1. The guide wheel mechanism 3 moves along the vertical track 11, playing a guiding role in the overall lifting process of the grabbing mechanism 6, and serving as an operation safety protection measure during the transportation of pipe segments.

[0038] The bottom anti-fall safety door 4 is installed at the bottom of the protection frame 1 and is equipped with an infrared sensor and an audible and visual alarm device. The infrared sensor is used to sense unsafe factors below the safety door. When an unsafe factor is sensed, the safety door 4 is controlled to remain closed and the audible and visual alarm device is controlled to sound an alarm. Figure 6As shown, the infrared sensing device's sensing area A includes a certain height area above and below the safety door 4. The upper area is used to sense whether the pipe segment is in place. When a pipe segment is sensed and enters the sensing area, the safety door opens. If not, the safety door remains closed. The control mechanism receives the signal from the infrared sensing device and controls the safety door's actuator to open or close. The infrared sensing device can use a metal proximity sensor. A sensing sheet, such as a copper sheet, is provided at the bottom of the gripping mechanism or pipe segment. When the gripping mechanism or pipe segment enters the sensing area above the safety door, the metal proximity sensor senses the sensing sheet and transmits a signal to the control mechanism. After receiving the signal, the control mechanism sends a command to the safety door's actuator to open the safety door. At the same time, the infrared sensing device can also sense whether there are people or equipment entering within a certain height range below the safety door. This can be done by using an infrared sensor that is remotely connected to the control mechanism. When a person or equipment enters the infrared sensor's sensing range below the safety door 4, the infrared sensor detects changes in the infrared spectrum of the human body and sends a signal to the control mechanism. The control mechanism then sends a control command to the safety door 4, which will remain closed and will not open. The gripping mechanism cannot lower the pipe segment through the safety door, preventing the pipe segment from contacting people or equipment and causing an accident. At the same time, the control mechanism sends a command to the sound and light alarm to sound a safety alarm.

[0039] The infrared sensing device can include the aforementioned metal proximity sensor and infrared sensor, respectively, to monitor the sensing areas above and below the safety door. The control mechanism also sets a priority, with the infrared sensor taking precedence over the metal proximity sensor. This means that when the infrared sensor detects personnel below, the safety door will not be opened, even if the metal proximity sensor has already sensed that the pipe segments have been lowered into place. The safety door can only be opened after the personnel below have evacuated and the pipe segments are in place. Segment transport vehicles are located in underground tunnels. To avoid interference with the sensing results, the sensing area below the safety door is located above the height of the segment transport vehicles. The infrared sensing device can also be a sensing device that integrates the functions of the aforementioned metal proximity sensor and infrared sensor.

[0040] Cooperate Figures 6-10As shown, the safety door 4 can be opened in a translational manner. Two sets of T-shaped slide rails 44 are symmetrically arranged on the upper surfaces of both sides corresponding to the I-beams on both sides of the bottom of the protection frame 1. The T-shaped slide rails 44 move along the bottom flange plate of the I-beam. A rack 43 parallel to the T-shaped slide rail 44 is arranged in the middle of the upper surface of the safety door 4, with the tooth surface facing upward. The bottom of the protection frame 1 corresponds to a gear 42 installed through a gear bracket. The gear 42 is engaged with the rack 43, and the gear 42 is controlled to rotate by a servo motor 41. The servo motor 41 is remotely connected to the control mechanism, and the control mechanism controls the servo motor 41 to rotate, thereby driving the gear 42 and the rack 43 to cooperate in transmission, driving the safety door 4 to move along the I-beams on both sides thereof, opening or closing the bottom opening of the protection frame 1 connected to the underground tunnel.

[0041] The emergency stop button is set in the control mechanism, which controls the various actuators connected to the above-mentioned pipe segment feeder, lifting mechanism, grabbing mechanism, safety door and sound and light alarm equipment. Therefore, when the emergency stop button is pressed, the operation of any ongoing link can be stopped in time, and it can be used when a safety hazard is detected in any link of the system operation.

[0042] Compared with the traditional crane-driven lifting that uses slings as a safety protection measure, the safety protection system for the fully automatic transportation of pipe segments of the present invention can control the entire process of pipe segment lifting within a stable protection frame, and add fall protection, personnel entry and exit protection and emergency stop protection, which greatly increases the safety during pipe segment transportation and lays a solid foundation for the safe and orderly development of tunnel construction.

[0043] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A safety protection system for fully automatic transportation of pipe segments, characterized in that: include: A vertical transport protection frame is fixedly installed in a vertical shaft leading to an underground tunnel, wherein the interior of the protection frame forms a space for vertical transport of segments; Horizontal transport auxiliary joist, movably installed at the front end of the segment feeder, used to support the segments on the segment feeder and extend the segments to the top of the protective frame; A guide wheel mechanism is fixedly mounted around the grabbing mechanism. The grabbing mechanism is escalably mounted on the top of the protective frame via a lifting mechanism. The guide wheel mechanism is used to grab the segments on the segment feeder and vertically transport the segments along the inner space of the protective frame. A vertical track is provided in the protective frame. The guide wheel mechanism moves along the vertical track and plays a guiding role in the overall lifting and lowering process of the grabbing mechanism. A bottom anti-fall safety door is installed at the bottom of the protective frame and is equipped with an infrared sensor and an audible and visual alarm device. The infrared sensor is used to sense unsafe factors below the safety door. When an unsafe factor is sensed, the safety door is controlled to remain closed and the audible and visual alarm device is controlled to sound an alarm. An emergency stop button is provided in the control mechanism, and the control mechanism controls and connects the pipe segment feeder, the lifting mechanism, the grabbing mechanism, the safety door and the sound and light alarm device.

2. The safety protection system for fully automatic transportation of pipe segments according to claim 1 is characterized in that: The pipe segment feeding machine includes a base frame, a transport beam and a translation cylinder. The base frame is fixed on the ground, and the pipe segments are placed on the transport beam. One end of the translation cylinder is fixed to the rear end of the base frame, and the other end of the translation cylinder is fixed to the transport beam. The transport beam loaded with pipe segments is pushed toward the front end of the base frame by extending the translation cylinder. The auxiliary support beam is retractable or foldable and is installed at the front end of the base frame and corresponds to the bottom of the transport beam.

3. The safety protection system for fully automatic transportation of pipe segments according to claim 1 is characterized in that: The protective frame is a steel frame with a rectangular cross section, and the vertical rails are arranged at the four inner corners. The cross section of the grabbing mechanism is rectangular, and the guide wheel mechanism is arranged at the four corners of the top and bottom corresponding to the vertical rails.

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