Concrete segment cover plate lifting mechanism

Abstract

The application relates to the technical field of building engineering, in particular to a concrete segment cover plate lifting mechanism. The technical scheme is as follows: two end supports, a track arranged at the top of the support, four lifting cylinders, two walking mechanisms arranged at the top of the track, a concave connecting frame fixedly connected between the walking mechanisms of the two end supports, a hopper trolley with an open bottom arranged between the concave connecting frames, a discharging control mechanism arranged on the surface of the hopper trolley, and a spacing adjusting mechanism arranged in the concave surface of the connecting frame. The hopper trolley is combined with the walking mechanism, so that the hopper trolley can be driven to move synchronously while the lifting mechanism is driven to move, the hopper trolley can be conveniently aligned with a segment opening to be filled, and the carrying of the clinker and the synchronous movement are completed, the discharging work can be quickly completed while the sealing performance of the discharge opening is ensured through the discharging control mechanism, and the work efficiency is improved.

Description

Technical Field

[0001] This application relates to the technical field of building engineering, and in particular to a lifting mechanism for concrete segment cover plates. Background Technology

[0002] In shield tunnel construction, concrete segments typically have pre-installed hoisting holes and grouting holes. After the segments are assembled, these holes need to be permanently sealed and reinforced to prevent groundwater leakage, ensure the structural integrity of the segments, and meet durability requirements. To ensure a smooth surface on the segments during the pouring process, a cover plate structure needs to be laid on the segments. Due to the weight of the cover plate, a crane mechanism is required to lift the cover plate and place it on the segments.

[0003] Currently, existing concrete tunnel segments cannot be combined with the unloading and lifting mechanism during use. This requires first aligning the cover plate with the concrete tunnel segment and then aligning the unloading trolley with the segment inlet to unload the segment, which is cumbersome and inefficient.

[0004] Because there are many models of concrete pipe segments, and the cover plate needs to be customized to fit the size of the pipe segments, it is impossible to match the lifting cylinder chain with the top connector of the cover plate when lifting. It is necessary to find the corresponding lifting mechanism on site according to the cover plate, which increases the workload. Summary of the Invention

[0005] The purpose of this application is to provide a concrete segment cover lifting mechanism to solve the problems of low efficiency and poor adaptability of existing technologies that separate transportation and unloading, and the inability of the lifting mechanism to adjust the spacing.

[0006] The technical solution includes supports at both ends; The track is set at the top of the bracket; Four lifting cylinders are installed on the top of the track. Two traveling mechanisms are provided on the top of the track. The traveling mechanisms on different supports at both ends are fixedly connected to each other with concave connecting frames. The connecting frames are provided with hopper trolleys with open bottoms. The surface of the hopper trolley is provided with a material feeding control mechanism. The concave surface of the connecting frame is provided with a spacing adjustment mechanism.

[0007] The bracket serves as a support structure for the traveling mechanism, ensuring that the traveling mechanism can move at its top track. The traveling mechanism drives the lifting mechanism to move, which facilitates the adaptation adjustment to the bottom concrete pipe. Concrete filler is placed inside the hopper trolley. The opening and closing control of the bottom end of the hopper trolley is controlled and adjusted by the material feeding control mechanism to ensure that concrete is transported into the pipe segment after the cover plate is fixed to the concrete pipe segment. The spacing adjustment mechanism adapts to different sizes and models of cover plate structures, ensuring that the same batch of lifting mechanisms can be adapted to different models of cover plates for corresponding use.

[0008] As an improvement to the above solution, the walking mechanism includes a housing connected to the support, and two movable walking wheels are arranged inside the housing via a rotating shaft.

[0009] By adopting the above technical solution, the walking wheel can slide stably on the track, the outer shell is used to fix the support structure between the outer shell on the opposite side, and the outer shell ensures the normal movement of the walking wheel through the built-in rotating shaft.

[0010] As an improvement to the above solution, a drive motor is installed on the outer shell corresponding to the walking wheel. The walking wheel includes a drive wheel connected to the drive shaft of the drive motor and a driven wheel installed on one side of the drive wheel.

[0011] By adopting the above technical solution, the drive motor is started to drive the drive wheel to rotate, the drive wheel drives the entire outer shell to move, and when the outer shell moves, it drives the internal driven wheel to move. The dual-wheel configuration ensures the stability of the overall movement.

[0012] As an improvement to the above solution, the material feeding control mechanism includes a telescopic cylinder installed on one side of the hopper trolley. One end of the telescopic cylinder is fixedly connected to an arc-shaped plate for sealing. When the arc-shaped plate closes, it completes the sealing work of the hopper trolley with the bottom opening.

[0013] By adopting the above technical solution, the telescopic cylinders on both sides are activated simultaneously. The telescopic cylinders drive the arc plate to open and close at the bottom of the hopper trolley. The bottom opening design of the hopper trolley allows the concrete inside to be discharged after the sealing state of the arc plate at its bottom is resolved.

[0014] As an improvement to the above solution, the diameter of the support of the arc-shaped plate is longer than the diameter of the bottom opening of the hopper trolley. The arc-shaped plate extends out of the fixed end of the hopper trolley and is fixedly connected to a fan-shaped plate. One end of the fan-shaped plate is connected to a gear through a rotating shaft. The gears mesh with each other. The gears are movably mounted to a U-shaped seat fixed to the hopper trolley through the rotating shaft.

[0015] By adopting the above technical solution, the movement trajectory of the arc plate is improved. When the telescopic cylinder is activated, the arc plate drives the fan plate to swing to one side through the fan plate connected to the top of one end. The end of the fan plate drives the gear to rotate through the rotating shaft. When one of the gears rotates, it drives the other gear to rotate through gear meshing. The other gear drives the fan plate and arc plate to swing in opposite directions through the same principle, thus completing the opening.

[0016] As an improvement to the above solution, a cylinder seat is slidably connected to the surface of the connecting frame, the bottom of the cylinder seat is fixedly connected to the lifting cylinder, and the surface of the cylinder seat is connected to the spacing adjustment mechanism.

[0017] By adopting the above technical solution, the cylinder seat can move laterally back and forth at the bracket through a sliding relationship. The cylinder seat drives the lifting mechanism to move synchronously, thereby ensuring that after the overall structure is fixedly installed, the start-up spacing adjustment mechanism can drive the lifting mechanism to match different models and sizes of cover plates.

[0018] As an improvement to the above solution, the spacing adjustment mechanism includes a slider that passes through the cylinder seat, and a lead screw is provided inside the slider for helical transmission. One end of the lead screw is connected to a motor placed on the concave surface of the connecting frame, and the other end of the lead screw is connected to a shaft seat placed on the concave surface of the connecting frame.

[0019] By adopting the above technical solution, the starter motor drives the lead screw to rotate, and the lead screw drives the slider to move laterally on its surface through the screw drive. The slider drives the cylinder seat to move synchronously, and the other end of the lead screw is guaranteed to rotate stably through the shaft seat, so as to realize the rapid adjustment of the position of the lifting cylinder.

[0020] As an improvement to the above solution, a chain is connected to the bottom of the lifting cylinder, and a cover plate for sealing the concrete pipe segment is fixedly connected to the bottom of the chain.

[0021] By adopting the above technical solution, the lifting cylinder is fixedly connected to the cover plate surface connector by a chain, and the upgrading mechanism can be connected to the cover plate by a buckle. At this time, the lifting cylinder is started to drive the cover plate structure to rise and fall to the concrete segment, and then the chain is removed to complete the overall transportation work.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. In this utility model, by combining the hopper trolley with the traveling mechanism, it is ensured that the hopper trolley moves synchronously while the lifting mechanism moves, which makes it convenient to align the hopper trolley with the inlet of the tube segment to be filled, and to complete the simultaneous handling of the clinker. The material unloading control mechanism can quickly complete the unloading work while ensuring the sealing of the outlet, thereby improving work efficiency. 2. By setting a spacing adjustment mechanism, it can adapt to different sizes of cover plate structures in the existing technology. The motor is started to drive the lead screw to rotate. The lead screw drives the slider to move laterally back and forth on its surface through the helical transmission principle with the slider. The slider drives the cylinder seat to move synchronously to the appropriate lifting position of different cover plates, thereby improving economic adaptability. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a front view of the overall structure of an embodiment of this application; Figure 3 This is a cross-sectional view of the walking mechanism according to an embodiment of this application; Figure 4This is a schematic diagram of the feeding control mechanism according to an embodiment of this application; Figure 5 This is a cross-sectional view of the U-shaped seat according to an embodiment of this application; Figure 6 This is a schematic diagram of the spacing adjustment mechanism according to an embodiment of this application; Explanation of reference numerals in the attached drawings: 1. Bracket; 11. Track; 2. Lifting cylinder; 21. Chain; 3. Traveling mechanism; 31. Housing; 32. Traveling wheel; 321. Driving wheel; 322. Driven wheel; 33. Drive motor; 4. Connecting frame; 41. Cylinder seat; 5. Hopper trolley; 6. Discharge control mechanism; 61. Telescopic cylinder; 62. Arc plate; 63. Sector plate; 64. Gear; 65. U-shaped seat; 7. Spacing adjustment mechanism; 71. Slider; 72. Lead screw; 73. Motor; 74. Shaft seat; 8. Cover plate. Detailed Implementation

[0024] The above-described solution will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of this application. The implementation conditions used in the embodiments may be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are generally those in routine experiments. Example

[0025] A concrete segment cover lifting mechanism, as described in the reference Figures 1-2 As shown, it includes two end supports 1, with a track 11 on the top of the support 1. A traveling mechanism 3 is slidably mounted on the top of the track 11. Connecting frames 4 are connected to each other of the traveling mechanisms 3. When the traveling mechanism 3 is started, the connecting frames 4 are driven to slide along the track 11. A hopper trolley 5 for unloading material is mounted on the inner side of the connecting frame 4. A cylinder seat 41 is slidably mounted on the surface of the connecting frame 4 and is limited. The cylinder seat 41 is composed of two plates. A lifting cylinder 2 is fixedly connected to the bottom of the cylinder seat 41. When the lifting cylinder 2 is started, the chain 21 is driven to lift synchronously. The chain 21 is fixedly connected to the concrete pipe segment with a cover plate 8. The top of the cover plate 8 is provided with a buckle structure corresponding to the chain 21. When the lifting cylinder 2 is started, the cover plate 8 is driven to lift synchronously.

[0026] like Figure 3 As shown, the walking mechanism 3 includes an outer housing 31 assembly. Inside the housing 31, two walking wheels 32 are connected via a movable shaft. The walking wheels 32 include a driving wheel 321 and a driven wheel 322. A drive motor 33 for starting is provided on the outer surface of the housing 31 where it connects to the driving wheel 321. Starting the drive motor 33 drives the driving wheel 321 to rotate. The driving wheel 321 moves on the track 11, causing the housing 31 to move. When the housing moves, it drives the driven wheel 322 to move. The driven wheel 322 provides stable balance for the overall walking mechanism 3.

[0027] like Figures 4-5As shown, the hopper trolley 5 adopts a top and bottom opening design, with an overall funnel structure that is wider at the top and narrower at the bottom. A telescopic cylinder 61 is fixedly installed on one side of the hopper trolley 5. One end of the telescopic cylinder 61 is fixedly connected to an arc-shaped plate 62 that seals the bottom opening of the hopper trolley 5. A fan-shaped plate 63 is fixedly connected to the top of the arc-shaped plate 62. A gear 64 is movably connected to the top of the fan-shaped plate 63. A U-shaped seat 65 is installed on the surface of the hopper trolley 5 outside the gear 64. Another gear 64 is also meshed with the gear 64 inside the U-shaped seat 65. The arc-shaped plate 62 and the fan-shaped plate 63 are symmetrically installed on the other gear 64. The bottom opening of the hopper trolley 5 is sealed by the two arc-shaped plates 62. When in use, the telescopic cylinder 61 is activated. Under the action of the fan-shaped plate 63, the arc-shaped plate 62 can be lifted by the telescopic cylinder 61. At this time, the arc-shaped plate 62 is opened to discharge the concrete inside the hopper trolley 5 into the tunnel segment.

[0028] like Figure 6 As shown, the connecting frame 4 adopts a concave design, and the cylinder seat 41 can slide laterally at the connecting frame 4. A slider 71 is connected through the surface of the cylinder seat 41, and a lead screw 72 is installed through the inside of the slider 71. The lead screw 72 and the slider 71 satisfy the screw transmission principle. One end of the lead screw 72 is connected to a motor 73, and the other end is sleeved with a shaft seat 74. By starting the motor 73, the lead screw 72 is driven to rotate. The lead screw 72 drives the slider 71 to move laterally on its surface through the screw transmission principle. The lateral position is adjusted by the forward and reverse rotation of the motor 73. The slider 71 drives the cylinder seat 41 to move horizontally. The cylinder seat 41 drives the chain 21 to move to the position where the cover plates 8 of different specifications are to be engaged, so as to realize the matching lifting of different cover plates 8.

[0029] The implementation principle of the concrete pipe segment cover plate lifting mechanism in this application embodiment is as follows: The bracket 1 is installed on both sides of the concrete pipe transportation line. After the concrete pipe is transported to a suitable location via the transportation line, the lifting cylinder 2 is activated to drive the chain 21 to fix the cover plate 8 and lift it above the position corresponding to the concrete pipe. After lifting, ensure that the center opening of the cover plate 8 corresponds to the discharge port of the hopper trolley 5. The drive motor 33 is activated to drive the drive wheel 321 to rotate. The drive wheel 321 slides on the track 11, driving the outer shell 31 to move. The outer shell 31 carries... The moving connecting frame 4 moves, and when the cover plate 8 is moved to a suitable position, the lifting cylinder 2 is activated to drive the cover plate 8 to contact the top of the concrete pipe through the chain 21. Then the telescopic cylinder 61 is activated. When the telescopic cylinder 61 drives the arc plate 62 to rise, since the arc plate 62 is connected to the gear 64 through the fan plate 63, the lifting trajectory is modified to an arc swing. At this time, the bottom sealing port of the hopper trolley 5 is opened. The concrete structure pre-stored inside the hopper trolley 5 is input into the inside of the pipe through the bottom opening. The cover plate 8 ensures the smoothness of the top inside the pipe.

[0030] Depending on the size of the cover plate 8, the motor 73 can be started to drive the lead screw 72 to rotate inside the bearing seat 74. The lead screw 72 drives the slider 71 to move laterally on its surface through the screw transmission principle with the slider 71. The slider 71 drives the cylinder seat 41 to move synchronously. The cylinder seat 41 drives the lifting cylinder 2 and the chain 21 to adjust the spacing of the cover plate 8 to match different sizes, thereby improving economic applicability.

[0031] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A concrete segment cover lifting mechanism, comprising supports at both ends (1); The bracket (1) has a track (11) set at the top. Four lifting cylinders (2), characterized in that: The track (11) is provided with two walking mechanisms (3) at the top. The walking mechanisms (3) at different supports (1) at both ends are fixedly connected to each other with concave connecting frames (4). The connecting frames (4) are provided with hopper trolleys (5) with bottom openings. The surface of the hopper trolleys (5) is provided with a feeding control mechanism (6). The concave surface of the connecting frame (4) is provided with a spacing adjustment mechanism (7).

2. The concrete segment cover lifting mechanism according to claim 1, characterized in that: The walking mechanism (3) includes a housing (31) connected to the bracket (1), and two movable walking wheels (32) are arranged inside the housing (31) via a rotating shaft.

3. The concrete segment cover lifting mechanism according to claim 2, characterized in that: The outer casing (31) is equipped with a drive motor (33) at the corresponding walking wheel (32). The walking wheel (32) includes a drive wheel (321) connected to the drive shaft of the drive motor (33) and a driven wheel (322) installed on one side of the drive wheel (321).

4. The concrete segment cover lifting mechanism according to claim 1, characterized in that: The feeding control mechanism (6) includes a telescopic cylinder (61) installed on one side of the hopper trolley (5). One end of the telescopic cylinder (61) is fixedly connected to an arc plate (62) for sealing. When the arc plate (62) is closed, the hopper trolley (5) with the bottom opening is sealed.

5. A concrete segment cover lifting mechanism according to claim 4, characterized in that: The diameter of the support of the arc plate (62) is longer than the diameter of the bottom opening of the hopper trolley (5). The arc plate (62) extends out of the fixed end of the hopper trolley (5) and is fixedly connected to a fan plate (63). One end of the fan plate (63) is connected to a gear (64) through a rotating shaft. The gears (64) mesh with each other. The gears (64) are movably mounted with a U-shaped seat (65) fixed to the hopper trolley (5) through a rotating shaft.

6. The concrete segment cover lifting mechanism according to claim 1, characterized in that: The surface of the connecting frame (4) is slidably connected to a cylinder seat (41), the bottom of the cylinder seat (41) is fixedly connected to the lifting cylinder (2), and the surface of the cylinder seat (41) is connected to the spacing adjustment mechanism (7).

7. A concrete segment cover lifting mechanism according to claim 6, characterized in that: The spacing adjustment mechanism (7) includes a slider (71) that passes through the cylinder seat (41). The slider (71) is equipped with a screw (72) for internal helical transmission. One end of the screw (72) is connected to a motor (73) placed on the concave surface of the connecting frame (4), and the other end of the screw (72) is connected to a bearing seat (74) placed on the concave surface of the connecting frame (4).

8. The concrete segment cover lifting mechanism according to claim 1, characterized in that: The bottom of the lifting cylinder (2) is connected to a chain (21), and the bottom of the chain (21) is fixedly connected to a cover plate (8) for sealing the concrete pipe segment.

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