A pipe segment hoisting and conveying device

Abstract

The present invention discloses a segment hoisting and conveying device, which is fixed between the shield machine connecting bridge and the No. 1 trolley, and includes a left hoisting and conveying part and a right hoisting and conveying part respectively arranged on the left and right sides of the shield machine and symmetrically arranged in parallel, and the left hoisting and conveying part and the right hoisting and conveying part both include an I-beam, a walking assembly, a posture change assembly and a grab assembly arranged from top to bottom. The swinging arm and the swinging arm are both driven by oil cylinders to adjust their postures, which have high stability and are not easy to be damaged. The output torque of the hydraulic motor is large, and the problem of high failure rate of motors, electromagnetic brakes and the like in traditional walking devices is avoided. The posture change assembly can adjust the posture and recycle it to the bottom of the walking beam, reserving a working space under the walking beam, and increasing the working efficiency of the shield process. A hydraulic motor is arranged inside the balance beam, which can make the grab head on the balance beam move horizontally left and right to adjust the left and right position of the hoisted segment.

Description

Technical Field

[0001] The invention relates to the technical field of shield equipment, in particular to a pipe segment hoisting and conveying device. Background Art

[0002] The shield segment is the main assembly component during shield construction. It is the innermost barrier of the tunnel and bears the role of resisting soil pressure, groundwater pressure and some special loads. During the process of the shield machine excavating the tunnel, the segment crane grabs the segment from the rear supporting trolley and transports it to the location of the segment splicing machine, thereby realizing the hoisting and transportation of the segment.

[0003] The existing equipment for grabbing pipe segments by pipe segment cranes mainly uses chain hoists to grab and lift pipe segments. Since the motor, sprocket, gear and chain in the chain hoist are all wearing parts, they are easily damaged after a period of use, which easily causes failures during the pipe segment lifting process, resulting in a high failure rate and increased costs for replacing wearing parts such as motors. In addition, the chain hoist cannot change its posture or retract when it is not working, which occupies a certain amount of working space. Workers need to control the walking device to drive the chain hoist to move position every time they work, so as to reserve working space, which causes the problem of low work efficiency. In addition, the existing chain hoist cannot adjust the left and right position of the pipe segment after lifting it, which has great limitations. After the existing segment crane completes the segment hoisting process, the traveling device installed on the traveling beam needs to drive the chain hoist to move in a predetermined direction and finally transport it to the location of the segment splicing machine. The traveling device of the existing segment crane generally uses a traveling motor and a chain to drive the chain hoist. The motor and the chain are both wearing parts, which have the problems of high failure rate and increased replacement cost. At the same time, the lifting and transportation of the existing segment crane require manual tracking and manual correction, which has the problems of low lifting efficiency and high labor cost. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a pipe segment hoisting and conveying device to solve the deficiencies and technical defects of the existing pipe segment hoisting. The purpose of the present invention is achieved through the following technical solutions:

[0005] A pipe segment hoisting and conveying device is fixed between a shield machine connecting bridge and a No. 1 trolley, and comprises a left hoisting and conveying part and a right hoisting and conveying part which are respectively installed on the left and right sides of the shield machine and are arranged in parallel and symmetrically. The left hoisting and conveying part and the right hoisting and conveying part both comprise an I-beam, a walking assembly, a posture change assembly and a grabbing assembly which are arranged from top to bottom. The walking assembly is slidably connected to the I-beam, a self-driving device is arranged in the walking assembly so that the walking assembly can move along the length direction of the I-beam, the posture change assembly is rotatably connected to the walking assembly, the grabbing assembly is fixedly connected to the end of the posture change assembly, and a grabbing head for fixing the pipe segment is arranged on the grabbing assembly.

[0006] Furthermore, the travel assembly includes a limit plate that cooperates with the I-beam to limit the position, a accommodating box with an upward opening, a travel driving mechanism arranged in the accommodating box, and a hinge support arranged at the bottom of the accommodating box.

[0007] Furthermore, the posture transformation assembly includes a swing arm, a swing arm and a telescopic cylinder group, the telescopic cylinder group is used to drive the swing arm and the swing arm to rotate, the front end of the swing arm is rotationally connected to the hinge support, the end of the swing arm is rotationally connected to the front end of the swing arm, and the end of the swing arm is rotationally connected to a fixed head.

[0008] Furthermore, the grabbing assembly includes a balance beam arranged between the left hoisting and conveying part and the right hoisting and conveying part, the upper and lower surfaces of the balance beam are provided with slide grooves for the grabbing head to move horizontally left and right, a horizontal movement hydraulic motor for driving the grabbing head to move horizontally left and right is arranged in the balance beam, a rack is arranged on the rod body of the grabbing head, and a gear that cooperates with the rack on the rod body of the grabbing head is installed on the output shaft of the horizontal movement hydraulic motor.

[0009] Furthermore, the travel drive mechanism includes a hydraulic motor and a reducer, the output shaft of the hydraulic motor is connected to the input end of the reducer, a gear is installed on the output shaft of the reducer, and a rack matching the gear is also provided at the bottom of the I-beam.

[0010] Furthermore, the telescopic cylinder group includes a first telescopic cylinder arranged on the left and right sides of the swing arm and a second telescopic cylinder arranged on the left and right sides of the swing arm.

[0011] Preferably, the swing arm is shaped like a Z-shaped structure, the swing arm is shaped like an umbrella handle, the head end of the first telescopic cylinder is fixed to the side wall of the accommodating box, the tail end of the first telescopic cylinder is connected to the upper part of the Z-shaped structure of the swing arm, the head end of the second telescopic cylinder is connected to the side wall of the tail end of the swing arm, and the tail end of the second telescopic cylinder is connected to the umbrella handle-shaped bending part of the swing arm.

[0012] Furthermore, the fixed head of the left hoisting and conveying part is connected to the left end of the balance beam, and the fixed head of the right hoisting and conveying part is connected to the right end of the balance beam.

[0013] Preferably, the structure of the balance beam is formed by splicing two I-beams.

[0014] Further, the limiting plate includes left and right side plates and a bottom plate, and the left and right side plates are provided with limiting bolts that are fixed in contact with the I-beam. The beneficial effects of the present invention are:

[0015] 1. The swinging arm and the swinging small arm in the posture change assembly of the present invention are both driven by a cylinder to adjust the posture. The cylinder is connected to the hydraulic system in the shield machine, has high stability and is not easy to damage, thus avoiding the problem of high failure rate of motor sprockets, gears and chains in traditional chain hoists.

[0016] 2. The posture change component in the present invention can adjust the posture and retract to the bottom of the walking beam, reserving a working space under the walking beam. During the shield operation, there is no need for frequent adjustments to leave working space, thereby increasing the working efficiency of the shield process.

[0017] 3. The travel drive assembly in the present invention adopts the driving mode of a hydraulic drive motor. The hydraulic motor is connected to the hydraulic system of the shield machine, has good stability, low failure rate, and large output torque of the hydraulic motor, thus avoiding the high failure rate of motors, electromagnetic brakes, etc. in traditional travel devices.

[0018] 4. The balance beam in the present invention is internally provided with a hydraulic motor, which can make the grab head on the balance beam move horizontally to the left and right, so as to adjust the left and right position of the lifting pipe segment.

[0019] 5. The lifting device provided in the present invention realizes the lifting and transportation of the pipe segment crane without manual tracking and manual correction, realizing mechanical automation. Only one operator is needed to complete the grabbing and transportation of the pipe segment, and the feeder in the original configuration is abolished. The pipe segment can be directly lifted to the position where the assembly machine grabs the pipe segment, reducing the construction process and saving a lot of labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the cooperation between the walking mechanism and the I-beam;

[0022] Figure 3 It is a structural diagram of the walking mechanism;

[0023] Figure 4 It is a structural schematic diagram of the coordination between the limit plate and the I-beam;

[0024] Figure 5 It is a schematic diagram of the structure of the grabbing head;

[0025] Figure 6 It is the structural schematic diagram of the balance beam;

[0026] In the figure, 1-left hoisting and conveying part, 2-right hoisting and conveying part, 3-I-beam, 4-limiting plate, 5-containing box, 6-hinge support, 7-swinging arm, 8-swinging arm, 9-fixed head, 10-balance beam, 11-grabbing head, 12-hydraulic motor, 13-reducer, 14-gear, 15-rack, 16-first telescopic cylinder, 17-second telescopic cylinder, 18-slide, 19-limiting bolt. DETAILED DESCRIPTION

[0027] The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following.

[0028] like Figures 1 to 6 As shown, a segment hoisting and conveying device consists of a left hoisting and conveying part 1, a right hoisting and conveying part 2, an I-beam 3, a limit plate 4, a accommodating box 5, a hinge support 6, a swing arm 7, a swing arm 8, a fixed head 9, a balance beam 10, a grab head 11, a hydraulic motor 12, a reducer 13, a gear 14, a rack 15, a first telescopic cylinder 16, a second telescopic cylinder 17, a slide chute 18 and a limit bolt 19.

[0029] A pipe segment hoisting and conveying device is fixed between a shield machine connecting bridge and a No. 1 trolley, and comprises a left hoisting and conveying part 1 and a right hoisting and conveying part 2 which are respectively arranged on the left and right sides of the shield machine and are parallel and symmetrical. The left hoisting and conveying part 1 and the right hoisting and conveying part 2 both comprise an I-beam 3, a walking assembly, a posture change assembly and a grabbing assembly arranged from top to bottom. The walking assembly is slidably connected to the I-beam, a self-driving device is arranged in the walking assembly, so that the walking assembly can move along the length direction of the I-beam, the posture change assembly is rotationally connected to the walking assembly, the grabbing assembly is fixedly connected to the end of the posture change assembly, a grabbing head 11 for fixing the pipe segment is arranged on the grabbing assembly, and the grabbing head 11 can be fixedly connected to the hoisting bolts on the pipe segment to grab and fix the pipe segment.

[0030] In Example 1, the walking assembly includes a limit plate 4 that cooperates with the I-beam 3 to limit the position, a receiving box 5 that opens upward, and a hinge support 6 arranged at the bottom of the receiving box 5. The limit plate 4 includes left and right side plates and a bottom plate. The left and right side plates are equipped with limit bolts 19 that are fixed in contact with the I-beam 3, so that the walking assembly can slide along the length direction of the I-beam 3. In order to control the moving position of the walking assembly, a walking drive mechanism is also arranged inside the receiving box 5. The walking drive mechanism includes a hydraulic motor 12 and a reducer 13. The output shaft of the hydraulic motor 12 is connected to the input end of the reducer 13. A gear 14 is installed on the output shaft of the reducer 13. A rack 15 that cooperates with the gear 14 is also arranged at the bottom of the I-beam 3. The movement of the entire pipe segment lifting and conveying device is achieved through the meshing of the gear 14 and the rack 15.

[0031] Embodiment 2, the posture transformation assembly comprises a swing arm 7, a swing arm 8 and a telescopic cylinder group, the telescopic cylinder group is used to drive the swing arm 7 and the swing arm 8 to rotate, the front end of the swing arm 7 is rotationally connected to the hinge support 6, the end of the swing arm 7 is rotationally connected to the front end of the swing arm 8, and the end of the swing arm 8 is rotationally connected to a fixed head 9.

[0032] In the above embodiment, the telescopic cylinder group includes a first telescopic cylinder 16 arranged on the left and right sides of the swing arm 7 and a second telescopic cylinder 17 arranged on the left and right sides of the swing arm 8 .

[0033] In the above embodiment, the swing arm 7 is shaped like a Z-shaped structure, the swing arm 8 is shaped like an umbrella handle, the head end of the first telescopic cylinder 16 is fixed to the side wall of the accommodating box 5, the tail end of the first telescopic cylinder 16 is connected to the upper part of the Z-shaped structure of the swing arm 7, the head end of the second telescopic cylinder 17 is connected to the side wall of the tail end of the swing arm 7, and the tail end of the second telescopic cylinder 17 is connected to the umbrella handle-shaped bending part of the swing arm 8.

[0034] Embodiment 2, the grabbing assembly includes a balance beam 10 arranged between the left hoisting and conveying part 1 and the right hoisting and conveying part 2, the structure of the balance beam 10 is formed by splicing two I-beams, and the upper and lower surfaces of the balance beam 10 are provided with slide grooves 18 for the grabbing head to move horizontally to the left and right, and a transverse hydraulic motor for driving the grabbing head 11 to move horizontally to the left and right is arranged in the balance beam 10, and a rack is arranged on the rod body of the grabbing head 11, and a gear that cooperates with the rack on the rod body of the grabbing head 11 is installed on the output shaft of the transverse hydraulic motor.

[0035] In the above embodiment, the fixed head 9 of the left hoisting and conveying part 1 is connected to the left end of the balance beam 10 , and the fixed head 9 of the right hoisting and conveying part 2 is connected to the right end of the balance beam 10 .

[0036] The working process of a segment hoisting and conveying device is as follows:

[0037] First, the hydraulic system in the shield machine drives the hydraulic motor in the travel assembly to work. The output end of the hydraulic motor is connected to the input end of the reducer. The output end of the reducer is equipped with a gear. The bottom of the I-beam is welded with a rack. The gear on the output shaft of the reducer meshes with the rack, so that the hydraulic motor drives the reducer, and the reducer drives the gear to rotate. The entire segment lifting and conveying device moves through the meshing of the gear and the rack. One end of the I-beam is fixed on the equipment bridge, and the other end is fixed on the No. 1 trolley. The I-beam plays the role of fixing and supporting this lifting and conveying device.

[0038] The hydraulic system of the shield machine controls the hydraulic motor in the travel assembly to work. The hydraulic motor drives the posture change assembly and the lifting assembly to move on the I-beam to the position of lifting the pipe segment. The hydraulic system controls the telescopic cylinder group on the swing arm to adjust the swing arm in the posture change assembly to rotate a certain angle so that the connection end of the swing arm and the swing arm is located directly above the pipe segment to be grabbed. Lifting bolts are generally fixed on the surface of the pipe segment. The grabbing head on the balance beam is fixed with the lifting bolts to complete the grabbing of the pipe segment by the lifting device. After adjusting the posture of the swing arm, the hydraulic system controls the second telescopic cylinder on the swing arm to rotate a certain angle so that the end of the swing arm contacts the lifting bolts on the pipe segment. The staff fixes the grabbing head to the lifting bolts on the pipe segment to complete the fixation of the pipe segment and the lifting and conveying device.

[0039] Finally, the hydraulic system controls the cylinder group on the swing boom and the swing arm to work, adjusts the posture of the swing boom and the swing arm, and the swing boom moves clockwise and lifts upward under the action of the first telescopic cylinder, and the swing arm swings counterclockwise and lifts upward under the action of the second telescopic cylinder. Then the hydraulic system controls the hydraulic motor in the walking assembly to drive the entire device to move to the position of the segment assembly machine, and controls the piston of the first telescopic cylinder on the swing boom to extend again through the hydraulic motor, driving the swing boom to rotate counterclockwise and lower it downward, controls the second telescopic cylinder in the swing arm to extend, and makes the arm of the swing arm rotate clockwise to a certain angle, and places the segment at the segment feeder of the segment assembly machine. At this time, the lifting bolts on the grab head and the segment are manually loosened to complete the lifting and transportation process of the segment.

[0040] The swinging arm and the swinging small arm in the posture change assembly of the present invention are both adjusted in posture by means of oil cylinder drive. The oil cylinder is connected to the hydraulic system in the shield machine, has high stability and is not easy to be damaged, thus avoiding the problem of high failure rate of the motor sprocket, gear and chain in the traditional chain hoist. The posture change assembly can adjust the posture and recycle it to the bottom of the walking beam, and reserve a working space for the bottom of the walking beam. During the shield operation, there is no need to frequently adjust the working space, thereby increasing the working efficiency of the shield process. The walking drive assembly adopts the driving mode of the hydraulic drive motor. The hydraulic motor is connected to the hydraulic system of the shield machine, has good stability and low failure rate, and the output torque of the hydraulic motor is large, thus avoiding the problem of high failure rate of the motor, electromagnetic brake and the like in the traditional walking device. An oil cylinder is arranged inside the balance beam, which can make the grab head on the balance beam move horizontally to the left and right, so as to adjust the left and right position of the lifting pipe segment.

Claims

1. A segment hoisting and conveying device, which is fixed between the shield machine connecting bridge and the No. 1 trolley, characterized in that: The invention comprises a left hoisting and conveying part (1) and a right hoisting and conveying part (2) which are respectively arranged on the left and right sides of the shield machine and are parallel and symmetrical. The left hoisting and conveying part (1) and the right hoisting and conveying part (2) both comprise an I-beam (3) arranged from top to bottom, a walking assembly, a posture change assembly and a grab assembly. The walking assembly is slidably connected to the I-beam. The walking assembly is provided with a self-driving device so that the walking assembly can move along the length direction of the I-beam (3). The posture change assembly is rotationally connected to the walking assembly. The grab assembly is fixedly connected to the end of the posture change assembly. The grab assembly is provided with a grab head (11) for fixing a pipe segment. The posture change assembly comprises a swing boom (7), a swing arm (8) and a telescopic cylinder group. The telescopic cylinder group is used to drive the swing boom (7) and the swing arm (8) to rotate. The front end of the swing boom (7) is rotationally connected to a hinge support (6). The end of the swing boom (7) is rotationally connected to the front end of the swing arm (8). The end of the swing arm (8) is rotationally connected to a fixed head (9).

2. The segment hoisting and conveying device according to claim 1, characterized in that: The travel assembly comprises a limit plate (4) that cooperates with the I-beam (3) to limit the position, a accommodating box (5) with an upward opening, a travel drive mechanism arranged in the accommodating box (5), and a hinge support (6) arranged at the bottom of the accommodating box (5).

3. The segment hoisting and conveying device according to claim 1, characterized in that: The grabbing assembly comprises a balance beam (10) arranged between a left hoisting and conveying part (1) and a right hoisting and conveying part (2); the upper and lower surfaces of the balance beam (10) are provided with slide grooves (18) for the grabbing head (11) to move horizontally to the left and right; a lateral hydraulic motor for driving the grabbing head (11) to move horizontally to the left and right is arranged in the balance beam (10); a rack is arranged on the rod body of the grabbing head (11); and a gear that cooperates with the rack on the rod body of the grabbing head (11) is installed on the output shaft of the lateral hydraulic motor.

4. The segment hoisting and conveying device according to claim 2, characterized in that: The travel drive mechanism comprises a hydraulic motor (12) and a reducer (13); an output shaft of the hydraulic motor (12) is connected to an input end of the reducer (13); a gear (14) is mounted on the output shaft of the reducer (13); and a rack (15) cooperating with the gear (14) is also provided at the bottom of the I-beam (3).

5. The segment hoisting and conveying device according to claim 2, characterized in that: The telescopic oil cylinder group comprises a first telescopic oil cylinder (16) arranged on the left and right sides of the swing boom (7) and a second telescopic oil cylinder (17) arranged on the left and right sides of the swing arm (8).

6. The segment hoisting and conveying device according to claim 5, characterized in that: The swing arm (7) is in the shape of a Z-shaped structure, the swing arm (8) is in the shape of an umbrella handle, the head end of the first telescopic oil cylinder (16) is fixed to the side wall of the accommodating box (5), the tail end of the first telescopic oil cylinder (16) is connected to the upper part of the Z-shaped structure of the swing arm (7), the head end of the second telescopic oil cylinder (17) is connected to the side wall of the tail end of the swing arm (7), and the tail end of the second telescopic oil cylinder (17) is connected to the umbrella handle-shaped bent portion of the swing arm (8).

7. The segment hoisting and conveying device according to claim 3, characterized in that: The fixed head (9) of the left hoisting and conveying part (1) is connected to the left end of the balance beam (10), and the fixed head (9) of the right hoisting and conveying part (2) is connected to the right end of the balance beam (10).

8. The segment hoisting and conveying device according to claim 7, characterized in that: The structure of the balance beam (10) is formed by splicing two I-beams.

9. The segment hoisting and conveying device according to claim 2, characterized in that: The limiting plate (4) comprises left and right side plates and a bottom plate, and the left and right side plates are provided with limiting bolts (19) which are in contact with and fixed to the I-beam (3).

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