CN222433993U - Movable hoisting platform for shield working well - Google Patents

Abstract

The utility model provides a movable hoisting platform for a shield working well, which comprises a moving platform and two walking rails, wherein the two walking rails are symmetrically paved on a ring beam of the shield working well, each walking rail horizontally extends from the ring beam to a middle plate adjacent to the ring beam, the moving platform is a square platform, the front side of the moving platform is provided with an electric walking wheel, the tail end of the moving platform is provided with two groups of driven rollers, the two groups of driven rollers of the moving platform are correspondingly arranged on the two rails and horizontally move on the rails, the electric walking wheels move on the middle plate, and the moving platform is provided with protective fences except one side adjacent to the middle plate and the middle part of the moving platform is provided with a hoisting frame. The utility model reduces the safety risk of material hoisting and transferring, improves the construction work efficiency, solves the problem of space limitation of the hoisting wellhead, improves the space utilization rate and hoisting efficiency of the hoisting wellhead, and reduces the number of auxiliary hoisting personnel.

Description

Movable hoisting platform for shield working well

Technical Field

The utility model relates to a shield construction device, in particular to a movable hoisting platform for a shield working well.

Background

The shield is a common method for subway construction, in the shield construction process, shield materials, dregs and the like are hoisted and transported through a hoisting well, the hoisting well is used as a later-period running access passage, the size of a wellhead is restricted by a plurality of conditions, the effective space is limited during hoisting, a visual field blind area is easy to exist in hoisting operation, the wellhead guardrail is required to be frequently dismantled in hoisting operation, at least 1-2 persons are required to assist hoisting, the operation work efficiency is low, and in the operation process, safety risks such as hoisting injury, object striking, personnel high falling and the like are superposed due to factors such as the visual field blind area, oblique hoisting, cross operation, three-violation behavior and the like.

Besides, shield construction is carried out in a busy area, the characteristics of narrow places, incapability of orderly storage of materials and the like are generally existed, so that the areas of the middle plate and the bottom plate are required to be fully utilized, the field utilization rate can be effectively improved, in addition, in the shield construction process, the construction turnover and the consumption materials are various, the materials tend to enter into the field in a large scale, part of the materials are stored in the places which can not be exposed to the sun and rain, the storage requirement is high, the materials are required to be stored in proper positions such as the middle plate and the bottom plate of a station in a concentrated mode, and the shield materials are hoisted to the middle plate and the bottom plate through a wellhead and all have hoisting risks.

In summary, the development of a movable hoisting platform suitable for hoisting a wellhead effectively avoids the safety risk and has great significance for improving the work efficiency.

Disclosure of Invention

According to the utility model, the movable hoisting platform for the shield working well is provided according to the defects of the prior art, and can directly hoist the material hoisted by the hoisting well to the platform through the track on the ring beam of the wellhead area of the shield working well and transfer the material to the middle plate through the moving platform, so that the hoisting risk existing in the process of directly hoisting the material to the middle plate is avoided, and the difficulty in transferring the material is reduced.

In order to achieve the technical purpose, the utility model provides a movable hoisting platform for a shield working well, which comprises a moving platform and two traveling rails, wherein the two traveling rails are symmetrically paved on a ring beam of the shield working well, each traveling rail horizontally extends from the ring beam to a middle plate adjacent to the ring beam, the moving platform is a square platform, the front side of the moving platform is provided with an electric traveling wheel, the tail end of the moving platform is provided with two groups of driven rollers, the two groups of driven rollers of the moving platform are correspondingly arranged on the two rails and horizontally move on the rails, the electric traveling wheels move on the middle plate, and the moving platform is provided with protective fences except one side adjacent to the middle plate and the other three sides of the moving platform are respectively provided with a hoisting frame in the middle of the moving platform.

According to the further technical scheme, the driven roller of the moving platform can move on other flat ground except the track, and the driven roller and the electric travelling wheel of the moving platform move on the flat middle plate or the bottom plate under the condition of no track.

The electric travelling wheel comprises a driving motor, a connecting shaft, a driving universal wheel and a driven universal wheel, wherein an output shaft of the driving motor is connected with a rotating shaft of the driving universal wheel through a transmission belt, the driving universal wheel and the driven universal wheel are symmetrically arranged on two sides of the connecting shaft, a steering wheel is arranged on a moving platform and is in transmission connection with the connecting shaft through a gear transmission mechanism, racks are arranged at two ends of the connecting shaft, first transmission gears are arranged on universal rotating shafts of the driving universal wheel and the driven universal wheel, and racks at two ends of the connecting shaft are respectively meshed with the first transmission gears on the driving universal wheel and the driven universal wheel and drive the universal shafts of the two universal wheels to rotate simultaneously through the steering wheel, the transmission mechanism and the connecting shaft so as to realize steering.

The utility model has the preferable technical scheme that the walking rails are in the form of channel steel with upward openings, the walking surfaces of the walking rails and the middle plate are on the same plane, more than 2/3 of the length of each walking rail is paved on the ring beam, the paving length of each walking rail on the ring beam is 1/3/-1/2 of the length of the ring beam, and the end parts of the two walking rails, which are arranged on the ring beam, are provided with limit baffles.

The hoisting frame comprises a supporting upright post and a cross beam rotatably arranged at the top of the supporting upright post, wherein a lifting hook is arranged at one side of the cross beam, and a counterweight is arranged at the other end of the cross beam.

According to the preferred technical scheme, the protective fence is provided with a reflective warning strip, a warning lamp or an audible and visual alarm.

The transmission mechanism comprises a second transmission gear arranged on a rotating shaft of the steering wheel, the tooth distance of the second transmission gear is the same as that of the first transmission gear, the second transmission gear is meshed with a rack of one side of the connecting shaft adjacent to the main driving universal wheel, and limit stops are arranged on two sides of the racks at two ends of the connecting shaft.

The electric traveling wheel is provided with an electromagnetic braking system, and the main driving universal wheel, the driven universal wheel and the two groups of driven idler wheels are provided with pressure sensors.

The utility model has the preferable technical scheme that a driving position is arranged at the position corresponding to the steering wheel on the mobile platform.

According to the preferable technical scheme, the wheel distance of the main driving universal wheel and the driven universal wheel is smaller than that of the two groups of driven rollers.

The utility model has the beneficial effects that:

(1) The track part of the utility model is paved on the ring beam of the middle plate corresponding to the wellhead area, the track part is paved on the middle plate, the moving platform directly moves on the track, the material can be directly hoisted to the platform through the hoisting wellhead and then transferred to the designated material storage area of the middle plate through the platform, the risk and difficulty existing in hoisting the material to the middle plate through the hoisting well are reduced, the condition that the auxiliary hoister is dragged by a hoisted object or hit by a falling object when hoisting the material is prevented, the hoisting vision blind area is eliminated, the risks of hoisting damage, object hit, high falling and the like are reduced, and the moving platform can also move on the bottom plate to transport the material.

(2) The movable platform is driven by a motor, can freely reciprocate, reduces the workload, reduces the labor amount for manually pushing transport materials, is also provided with a manual or electric brake, can be directly locked after stopping, is stable and safe during the operation of personnel, and can utilize the cutter shaft of the hob which is excessively worn by the shield for waste utilization.

(3) The lifting frame is further arranged on the mobile platform, so that materials on the platform can be quickly transferred to the middle plate or the bottom plate, the difficulty of manual transfer and storage is reduced, and the efficiency of material transfer is improved.

The utility model reduces the safety risk of material hoisting and transferring, improves the construction work efficiency, solves the problem of space limitation of the hoisting wellhead, improves the space utilization rate and hoisting efficiency of the hoisting wellhead, and reduces the number of auxiliary hoisting personnel.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a top view of the present utility model;

FIG. 3 is a front view of the mobile platform of the present invention;

FIG. 4 is a bottom view of the mobile platform of the present utility model;

FIG. 5 is a schematic diagram of a transmission mechanism of the present utility model;

fig. 6 is a view showing a state of use of the present utility model.

In the figure, 1-moving platform, 2-walking track, 3-middle plate, 4-electric walking wheel, 400-driving motor, 401-main driving universal wheel, 402-driven universal wheel, 403-linkage shaft, 404-rack, 405-first transmission gear, 406-second transmission gear, 5-ring beam, 6-protective fence, 7-lifting frame, 700-supporting column, 701-beam, 702-counterweight, 703-lifting hook, 8-driven roller, 9-steering wheel, 10-limit baffle, 11-shield working well, 12-driving position and 13-bottom plate.

Detailed Description

The utility model is further described below with reference to the drawings and examples. Figures 1 through 6 are drawings of embodiments, which are drawn in a simplified manner, for the purpose of illustrating embodiments of the utility model in a clear and concise manner. The following technical solutions presented in the drawings are specific to embodiments of the present utility model and are not intended to limit the scope of the claimed utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, or the directions or positional relationships conventionally put in place when the inventive product is used, or the directions or positional relationships conventionally understood by those skilled in the art are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific direction, be configured and operated in a specific direction, and therefore should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

The embodiment provides a movable hoisting platform for a shield working well, which is shown in fig. 1 to 5 and comprises a moving platform 1 and two walking rails 2, wherein the two walking rails 2 are symmetrically paved on a ring beam 5 of the shield working well 11, each walking rail 2 horizontally extends from the ring beam 5 to a middle plate 3 adjacent to the ring beam 5, the moving platform 1 is a square platform, the front side of the moving platform is provided with an electric walking wheel 4, the tail end of the moving platform is provided with two groups of driven rollers 8, the two groups of driven rollers 8 of the moving platform 1 are correspondingly arranged on the two rails 2 and horizontally move on the rails 2, the electric walking wheels 4 move on the middle plate 3, the moving platform 1 is provided with protective fences 6 except one side adjacent to the middle plate 3, and warning devices such as a reflective warning strip, a warning lamp or an audible and visual alarm are arranged on the protective fences 6 to play a warning reminding role. The middle part of the mobile platform 1 is provided with a lifting frame 7, the lifting frame 7 comprises a supporting upright post 700 and a cross beam 701 rotatably arranged at the top of the supporting upright post 700, one side of the cross beam 701 is provided with a lifting hook 703, the other end of the cross beam is provided with a counterweight 702, and a manual or electric hoist can be arranged on the lifting frame to transfer materials on the mobile platform 1 to a middle plate or a bottom plate. The length of each walking rail 2 is more than 2/3 of the length of each walking rail 2 and is paved on the ring beam 5, the paving length of each walking rail 2 on the ring beam 5 is 1/3/-1/2 of the length of the ring beam, limit baffles 10 are arranged at the end parts of the parts, where the two walking rails 2 are arranged on the ring beam 5, of the two walking rails 2, the walking rails 2 are in the form of channel steel with upward openings, the walking surfaces of the two walking rails are on the same plane with the middle plate 3, no height difference exists between the walking rails 2 and the plate surface of the middle plate 3, and the walking rails can be directly transited from the walking rails 2 to the middle plate 3. The driven roller 8 of the mobile platform 1 in the embodiment can move on other flat ground except the walking track 2, the driven roller 8 and the electric walking wheel 4 of the mobile platform 1 move on the flat middle plate 3 or the bottom plate 13 without the track, and the walking track 2 is not needed to be arranged when the mobile platform moves on the bottom plate 13, so that the mobile platform can directly move on the bottom plate for transferring materials.

In an embodiment, as shown in fig. 1 to 5, the electric walking wheel 4 comprises a driving motor 400, a linkage shaft 403, a driving universal wheel 401 and a driven universal wheel 402, an output shaft of the driving motor 400 is connected with a rotating shaft of the driving universal wheel 401 through a transmission belt, the driving universal wheel 401 and the driven universal wheel 402 are symmetrically arranged on two sides of the linkage shaft 403, a steering wheel 9 is arranged on the mobile platform 1, a driving position 12 corresponding to the steering wheel 9 is arranged on the mobile platform 1, a worker can conveniently sit on the driving position 12 to control the steering of the mobile platform 1, and a control box and a control panel can be further arranged on the driving position 12, so that the control of the whole mobile platform can be realized. The two ends of the linkage shaft 403 are respectively provided with a rack 404, the universal rotation shafts of the driving universal wheel 401 and the driven universal wheel 402 are provided with a first transmission gear 405, the racks 404 at the two ends of the linkage shaft 403 are respectively meshed with the first transmission gears 405 on the driving universal wheel 401 and the driven universal wheel 402, the rotation shaft of the steering wheel 9 is provided with a second transmission gear 406, the pitch of the second transmission gear 406 is the same as that of the first transmission gear 405, the second transmission gear 406 is meshed with the racks 404 adjacent to one side of the driving universal wheel 401 of the linkage shaft 403, and limit stops are respectively arranged at the two sides of the racks 404 at the two ends of the linkage shaft 403 to prevent separation between the racks and the gears. The steering wheel 9, the transmission mechanism and the linkage shaft 403 drive the universal shafts of the two universal wheels to rotate simultaneously so as to realize steering.

In the hoisting platform in the embodiment, the electric traveling wheel 4 is provided with an electromagnetic braking system, and can be directly locked after being stopped, so that the electric traveling wheel is stable and safe during the operation of personnel. The main driving universal wheel 401, the driven universal wheel 402 and the two groups of driven idler wheels 8 are respectively provided with a pressure sensor, can automatically sense the bearing weight of the mobile platform, can give an alarm when overweight conditions occur, and avoid safety accidents. The wheel distance of the driving universal wheel 401 and the driven universal wheel 402 is smaller than that of the driven rollers 8 of the two groups, and the driven rollers 8 are directional wheels, so that the universal wheels can be ensured to be in a track area.

The utility model is applied to a specific subway construction project, wherein the project is a subway construction project of a Chengdu, the length of a certain station is 336.47 m+the length of an open cut wiring section is 53.14m, the total length of a line is 2703.417m, the total length of a left line of a shield section is 1987.87m, and the total length of a right line is 2158.49m. In the construction process, because the field space is limited, the subway construction is in urban busy zones, the shield construction is generally in narrow places, materials cannot be stored orderly, the material turnover frequency is high, the middle plate and the bottom plate area are required to be fully utilized for storing the materials, but the materials are directly hoisted to the middle plate through the shield well, the middle plate is hollow corresponding to the shield well area, the inclined hoisting is required to be adopted in the hoisting process, and great safety risks exist in the hoisting process. In order to solve the material transfer problem, the hoisting platform disclosed by the utility model is used in the project. Specifically, as shown in fig. 6, a walking track 2 is laid in a region of a shield well ring beam 5 adjacent to a middle plate 3, the length of the walking track 2 on the ring beam 5 occupies 1/3-1/2 of the length of the ring beam, the other end of the walking track 2 extends to the middle plate, and a baffle is not arranged at one end of the middle plate, so that a moving platform can directly move on the middle plate 3 after being separated from the track. The movable platform adopts pattern steel plates to weld two linings, the hoisting strength is met, the width is determined according to the size of a wellhead ring beam, the length meets the requirements of material hoisting and a portal crane blanking operable area, and the hoisting wellhead half length (about 3 m) is recommended. The walking track adopts field 15mm channel steel, the track space is matched with the wellhead size and the walking wheel space, the walking driven roller 8 adopts steel wheels, the single pulley bears a load of 1T, the pulley load meets the safety factor requirement (the weight of conventional materials is less than 2T), the driven walking roller 8 can also adopt a hob cutter shaft for excessive abrasion of a shield, and waste is utilized.

The inventor of this project has also carried out the calculation to the bearing capacity of hoist and mount platform and has verified, hoist and mount operation platform is customized according to hoist and mount well head's size, and conventional hoist and mount well head is 9m5 m, designs hoist and mount operation platform area and is 3m5 m, and the platform skeleton adopts Q235B steel to weld to form, through the atress inspection, and the maximum bearing capacity of platform is 30.75kN/m2. The platform only stores a single piece of material during the material transfer process. The conventional materials comprise grease oil, slag soil modifier, grouting material, other auxiliary materials and the like. The sealing grease for the shield tail is 0.25 t/barrel, the cross-sectional area of the bottom is 0.26m < 2 >, the hydraulic oil is 0.17 t/barrel, the cross-sectional area of the bottom is 0.26m < 2 >, the foaming agent is 1 t/barrel, the cross-sectional area of the bottom is 1m < 2 >, the water glass is 1.45 t/barrel, the cross-sectional area of the bottom is 1m < 2 >, and the single parts (small barrels or bags) of other dispersing agents are smaller than 1t. The steel platform structure is subjected to stress checking calculation by combining a finite element analysis principle, the maximum stress generated by a single heaviest material (taking single barrel of water glass as an example of 1.5 t) borne by each 1m < 2 > platform is 3.075MPa, the yield strength of Q235B is 235MPa, the maximum displacement is 1.879mm, the safety coefficient is 76.4, and the use requirement is met.

When the lifting platform in the embodiment works, firstly, the moving platform 1 is moved to one end of the walking track 2 adjacent to the shield working wellhead, then the material is vertically lifted to the moving platform, then the moving platform is moved to the middle plate 3 along the walking track 2, after the moving platform is completely separated from the walking track 2, the moving platform can be continuously moved to a specified material stacking position along the middle plate 3, and a manual or electric hoist can be arranged on the lifting support to lift the material to the specified position of the middle plate for storage, and the whole process only needs 1-2 staff to assist in operation and does not need manual carrying. The lifting platform in the embodiment can also directly transfer materials on the bottom plate 13, and the transferring method is the same as that of the middle plate 3, but no track is required.

The foregoing description is of one embodiment of the utility model and is thus not to be taken as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of the utility model should be assessed as that of the appended claims.

Claims (10)

1. A movable hoisting platform for a shield working well is characterized by comprising a moving platform (1) and two walking rails (2), wherein the two walking rails (2) are symmetrically paved on a ring beam (5) of the shield working well (11), each walking rail (2) horizontally extends from the ring beam (5) to a middle plate (3) adjacent to the ring beam (5), the moving platform (1) is a square platform, an electric walking wheel (4) is arranged at the front side of the moving platform, two groups of driven rollers (8) are arranged at the tail end of the moving platform, the two groups of driven rollers (8) of the moving platform (1) are correspondingly arranged on the two rails (2) and horizontally move on the rails (2), the electric walking wheels (4) move on the middle plate (3), protective rails (6) are arranged on the other three sides of the moving platform (1) except for the side adjacent to the middle plate (3), and a hoisting frame (7) is arranged in the middle of the moving platform (1).

2. A mobile lifting platform for shield work well according to claim 1, characterized in that the driven roller (8) of the mobile platform (1) can move on other flat ground than the travelling rail (2), and in that the driven roller (8) and the electric travelling wheel (4) of the mobile platform (1) move on the flat middle plate (3) or the bottom plate (13) without the rail.

3. The movable hoisting platform for the shield working well according to claim 1 or 2, wherein the electric travelling wheel (4) comprises a driving motor (400), a connecting shaft (403), a driving universal wheel (401) and a driven universal wheel (402), an output shaft of the driving motor (400) is connected with a rotating shaft of the driving universal wheel (401) through a transmission belt, the driving universal wheel (401) and the driven universal wheel (402) are symmetrically arranged on two sides of the connecting shaft (403), a steering wheel (9) is arranged on the movable platform (1), the steering wheel (9) is in transmission connection with the connecting shaft (403) through a gear transmission mechanism, racks (404) are arranged at two ends of the connecting shaft (403), a first transmission gear (405) is arranged on a universal rotating shaft of the driving universal wheel (401) and the driven universal wheel (402), and the racks (404) at two ends of the connecting shaft (403) are respectively meshed with the first transmission gears (405) on the driving universal wheel (401) and the driven universal wheel (402), and the steering wheel (403) are driven by the steering wheel (9) and the steering mechanism.

4. The movable hoisting platform for the shield working well is characterized in that the walking rails (2) are in the form of channel steel with upward openings, the track walking surfaces of the channel steel are on the same plane with the middle plate (3), more than 2/3 of the length of each walking rail (2) is paved on the ring beam (5), the paving length of each walking rail (2) on the ring beam (5) is 1/3/-1/2 of the length of the ring beam, and limit baffles (10) are arranged at the end parts of the parts, where the two walking rails (2) are arranged on the ring beam (5).

5. A movable hoisting platform for a shield work well according to claim 1 or 2, wherein the hoisting frame (7) comprises a supporting column (700) and a cross beam (701) rotatably arranged at the top of the supporting column (700), one side of the cross beam (701) is provided with a lifting hook (703), and the other end is provided with a counterweight (702).

6. A movable hoisting platform for a shield working well according to claim 1 or 2, wherein the protective fence (6) is provided with a reflective warning strip, a warning lamp or an audible and visual alarm.

7. A movable hoisting platform for a shield work well according to claim 3, wherein the transmission mechanism comprises a second transmission gear (406) arranged on the rotating shaft of the steering wheel (9), the second transmission gear (406) has the same pitch as the first transmission gear (405), the second transmission gear (406) is meshed with a rack (404) on one side of the linkage shaft (403) adjacent to the main driving universal wheel (401), and limit stops are arranged on two sides of the rack (404) on two ends of the linkage shaft (403).

8. A movable hoisting platform for a shield working well according to claim 3, wherein the electric travelling wheel (4) is provided with an electromagnetic braking system, and the main driving universal wheel (401), the driven universal wheel (402) and the two groups of driven rollers (8) are provided with pressure sensors.

9. A mobile lifting platform for a shield work well according to claim 3, characterized in that a steering position (12) is provided on the mobile platform (1) in correspondence of the steering wheel (9).

10. A mobile lifting platform for a shield work well according to claim 3, wherein the track of the driving universal wheel (401) and the driven universal wheel (402) is smaller than the track of the driven rollers (8) of the two groups.