CN216811713U - Two lining structure construction self-propelled hydraulic pressure bow member platform trucks of excavation station of separate island formula subway - Google Patents

Abstract

The utility model discloses a self-propelled hydraulic arch frame trolley for construction of a secondary lining structure of a split island type underground excavation station, which comprises a travelling mechanism, a trolley frame, a template assembly, a template vertical lifting and lateral stretching and translation mechanism, a hydraulic system and an electrical control system, wherein the travelling mechanism is connected with the trolley frame through a connecting rod; the trolley frame comprises walking beams, two cross beams are arranged on the two walking beams, the template assembly comprises a group of top molds and two groups of side molds, the top molds and the side molds are respectively fixed on the arch rings and are connected through hinge trunnions; a bracket is arranged on the inner side of the arch ring of the top die, the bracket comprises an upper longitudinal beam, and a transverse reversed cantilever beam is fixed below the upper longitudinal beam; an inner enclosure is arranged at the inner side of an arch ring of the side mold, a bidirectional lead screw is arranged between the inner enclosure and the trolley frame and between the bases of the longitudinal rails. The motor is adopted to automatically travel and the integrated circuit controls the trolley to hydraulically and automatically support the top, so that the construction period is shortened, the labor force is reduced, and the construction efficiency is improved; the accuracy of taking one's place of the platform truck is improved, the platform truck is accurately positioned, construction errors are reduced, and construction quality is improved.

Description

Two lining structure construction self-propelled hydraulic pressure bow member platform trucks of excavation station of separate island formula subway

Technical Field

The utility model relates to a construction arch center trolley for a subway underground excavation station, in particular to a self-propelled hydraulic arch center trolley for construction of a secondary lining structure of a separate island type subway underground excavation station.

Background

In the construction of subway tunnel engineering of urban rail transit, the construction environment is extremely complex and difficult, and the use of the conventional method in specific construction is often unsatisfactory. With the extensive thought of many engineers, high and new technologies and methods are needed to be applied to the construction of urban subway tunnels by people, wherein the two-lining trolley construction method is a method with a wider application range. In other words, the construction method of the urban subway tunnel secondary lining trolley occupies an important position in the construction of facilities for traversing various municipal roads, bridges, building buildings and the like.

At present, urban rail transit engineering at home and abroad is rapidly developed, and subways in many cities at home and abroad are built in gong and dense-drum fields. Because the subway is comfortable, quick and convenient, the subway becomes an important vehicle for people to go out, the subway becomes an important component of many urban traffics, and different subway cultures appear in various places.

Because the subway construction is mainly positioned below the urban main road, the subway construction inevitably affects the existing roads, bridges and buildings of the city, even damages the existing roads, bridges and buildings, how to safely, inexpensively and high-quality construct the subway engineering, and can ensure that the safe operation of the existing surrounding environment is a difficult point of the engineering.

The prior art scheme is as follows:

an arch formwork system is buckled by side span, and a trolley system is buckled by two linings, as shown in fig. 1 and fig. 2:

the simple formwork type two-lining buckling arch trolley is constructed in two parts, the side span buckling arch trolley adopts a wood formwork, an arch ring and a fastener type scaffold system, and the simple arch ring trolley support is adopted by the two-lining buckling arch trolley at the buckling arch top.

The two lining buckle arches adopt combined steel moulds with the thickness of 4mm of panels and 6mm of ribbed plates; the framework adopts 10I-steel to bend an arch center, and one arch center is arranged at a position of 0.75m in the longitudinal direction.

The bottom support of the two lining buckling arches adopts a combined support system of a jack and I-shaped steel (I20), the jack is erected on a side wall grid for removing the reserved pilot tunnel, the bottom of the jack adopts a steel plate support pad for leveling a template system, and the top of the jack is connected with the middle of a template support through 2I 20. The vertical spacing between the upright rods of the scaffold supports at the two ends is 0.75m, and the transverse spacing is 0.5 m; the middle parts of the transverse vertical rods are connected by a transverse connecting rod. After concrete pouring is finished, the jack unloads force, the die carrier falls on the I-shaped steel slide way, and the die carrier system is pulled to advance through the chain block.

The prior art has the following disadvantages:

the trolley is manually pulled to travel by adopting a chain block, and the trolley supports are manually supported by adopting jacks, so that a large amount of manpower is required; the whole travelling mechanism of the trolley has no track, the supporting tops of the trolley cannot be controlled in a centralized mode, the condition that the supporting tops of single jacks are overloaded or not supported exists, and the trolley cannot be accurately placed.

In view of the above, the present invention is particularly proposed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a self-propelled hydraulic arch frame trolley for construction of a secondary lining structure of a separate island type underground excavation station, which aims to solve the technical problems in the prior art.

The purpose of the utility model is realized by the following technical scheme:

the utility model discloses a self-propelled hydraulic arch frame trolley for construction of a secondary lining structure of a separate island type underground excavation station, which comprises a travelling mechanism, a trolley frame, a template assembly, a template vertical lifting and lateral stretching and translation mechanism, a hydraulic system and an electrical control system, wherein the trolley frame is arranged on the trolley frame;

the travelling mechanism comprises four groups of travelling wheels arranged on the longitudinal track, wherein two groups of driving travelling wheels are respectively provided with a motor, each motor is connected with the travelling wheels through a primary gear reducer and a two-stage chain speed reducing mechanism, and a synchronous forward and reverse rotating mechanism is arranged between the two motors;

the trolley frame comprises two walking beams fixed on the four groups of walking wheels, two cross beams are arranged on the two walking beams, an inter-cross-beam bridging is connected between the two cross beams, and a screw jack is arranged between the inter-cross-beam bridging and the foundation of the longitudinal rail;

the template assembly comprises a group of top molds and two groups of side molds, wherein the top molds and the side molds are respectively fixed on the arch ring and are connected through hinge trunnions;

a bracket is arranged on the inner side of the arch ring of the top die, the bracket comprises an upper longitudinal beam, a transverse inverted cantilever beam is fixed below the upper longitudinal beam, the inverted cantilever beam and the arch ring of the top die are supported, and a screw jack is arranged between the cross beam and the inverted cantilever beam;

an inner enclosure is arranged on the inner side of an arch ring of the side die, and a two-way screw rod is arranged between the inner enclosure and the trolley frame and between the inner enclosure and the foundation of the longitudinal rail;

the template vertical lifting, lateral stretching and translation mechanism comprises a vertical oil cylinder, a horizontal oil cylinder and a lateral oil cylinder;

the vertical oil cylinder is supported between the cross beam and the upper longitudinal beam, the horizontal oil cylinder is connected between the base of the cross beam and the vertical oil cylinder, and the lateral oil cylinder is connected between the inner enclosure and the trolley frame.

Compared with the prior art, the self-propelled hydraulic arch frame trolley for the construction of the secondary lining structure of the separated island type underground excavation station, provided by the utility model, adopts the automatic walking of the motor and the hydraulic automatic supporting of the trolley by the integrated circuit control, so that the construction period is shortened, the labor force is reduced, and the construction efficiency is improved; the accuracy of taking one's place of the platform truck is improved, the platform truck is accurately positioned, construction errors are reduced, and construction quality is improved.

Drawings

FIG. 1 is a schematic supporting diagram of a side span buckle arch formwork system in the prior art;

FIG. 2 is a schematic view of a support for a two-lined arch trolley system of the prior art

Fig. 3 is a schematic end-face structure view of a self-propelled hydraulic arch bogie for construction of a secondary lining structure of a split island type underground excavation station provided by the embodiment of the utility model;

fig. 4 is a schematic side structure view of a self-propelled hydraulic arch bogie for construction of a secondary lining structure of a split island type underground excavation station provided by the embodiment of the utility model;

in the figure:

1. template, 2, running gear, 3, walking beam, 4, crossbeam, 5, vertical hydro-cylinder, 6, last longeron, 7, anti-outrigger, 8, two-way lead screw, 9, work platform, bridging between 10, the crossbeam, 11, skylight, 12, lead screw jack, 13, feed port, 14, enclose in the fluid core, 15, hydraulic operation platform, 16, the arch ring, 17, horizontal hydro-cylinder, 18, side direction hydro-cylinder.

Detailed Description

The technical scheme in the embodiment of the utility model is clearly and completely described below by combining the attached drawings in the embodiment of the utility model; it is to be understood that the described embodiments are merely exemplary of the utility model, and are not intended to limit the utility model to the particular forms disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

The terms that may be used herein are first described as follows:

the term "and/or" means that either or both can be achieved, for example, X and/or Y means that both cases include "X" or "Y" as well as three cases including "X and Y".

The terms "comprising," "including," "containing," "having," or other similar terms of meaning should be construed as non-exclusive inclusions. For example: including a feature (e.g., material, component, ingredient, carrier, formulation, material, dimension, part, component, mechanism, device, process, procedure, method, reaction condition, processing condition, parameter, algorithm, signal, data, product, or article of manufacture), is to be construed as including not only the particular feature explicitly listed but also other features not explicitly listed as such which are known in the art.

The term "consisting of … …" is meant to exclude any technical feature elements not explicitly listed. If used in a claim, the term shall render the claim closed except for the inclusion of the technical features that are expressly listed except for the conventional impurities associated therewith. If the term occurs in only one clause of the claims, it is defined only to the elements explicitly recited in that clause, and elements recited in other clauses are not excluded from the overall claims.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "secured," etc., are to be construed broadly, as for example: can be fixedly connected, can also be detachably connected or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms herein can be understood by those of ordinary skill in the art as appropriate.

The terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in an orientation or positional relationship that is indicated based on the orientation or positional relationship shown in the drawings for ease of description and simplicity of description only, and are not intended to imply or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting herein.

Details which are not described in detail in the embodiments of the utility model belong to the prior art which is known to the person skilled in the art. Those not specifically mentioned in the examples of the present invention were carried out according to the conventional conditions in the art or conditions suggested by the manufacturer. The reagents or instruments used in the examples of the present invention are not specified by manufacturers, and are all conventional products available by commercial purchase.

The utility model discloses a self-propelled hydraulic arch frame trolley for construction of a secondary lining structure of a separate island type underground excavation station, which comprises a travelling mechanism, a trolley frame, a template assembly, a template vertical lifting and lateral stretching and translation mechanism, a hydraulic system and an electrical control system, wherein the trolley frame is arranged on the trolley frame;

the travelling mechanism comprises four groups of travelling wheels arranged on the longitudinal track, wherein two groups of driving travelling wheels are respectively provided with a motor, each motor is connected with the travelling wheels through a primary gear reducer and a two-stage chain speed reducing mechanism, and a synchronous forward and reverse rotating mechanism is arranged between the two motors;

the trolley frame comprises two walking beams fixed on the four groups of walking wheels, two cross beams are arranged on the two walking beams, an inter-cross-beam bridging is connected between the two cross beams, and a screw jack is arranged between the inter-cross-beam bridging and the foundation of the longitudinal rail;

the template assembly comprises a group of top molds and two groups of side molds, wherein the top molds and the side molds are respectively fixed on the arch ring and are connected through hinge trunnions;

a bracket is arranged on the inner side of the arch ring of the top die, the bracket comprises an upper longitudinal beam, a transverse inverted cantilever beam is fixed below the upper longitudinal beam, the inverted cantilever beam and the arch ring of the top die are supported, and a screw jack is arranged between the cross beam and the inverted cantilever beam;

an inner enclosure is arranged on the inner side of an arch ring of the side die, and a two-way screw rod is arranged between the inner enclosure and the trolley frame and between the inner enclosure and the foundation of the longitudinal rail;

the template vertical lifting, lateral stretching and translation mechanism comprises a vertical oil cylinder, a horizontal oil cylinder and a lateral oil cylinder;

the vertical oil cylinder is supported between the cross beam and the upper longitudinal beam, the horizontal oil cylinder is connected between the base of the cross beam and the vertical oil cylinder, and the lateral oil cylinder is connected between the inner enclosure and the trolley frame.

The adjusting stroke of the vertical oil cylinder is 200ram, and the left and right adjusting stroke of the horizontal oil cylinder is 100 mm.

The hydraulic system is characterized in that a hydraulic pipeline of the hydraulic system is provided with a direct return type oil return filter and an integrated valve block, and is respectively connected with the vertical oil cylinders, the horizontal oil cylinders and the lateral oil cylinders through three-position four-way manual reversing valves, the hydraulic pipelines of the four vertical oil cylinders are provided with two-way hydraulic control one-way valves, and the hydraulic pipeline of the lateral oil cylinder is provided with a one-way throttle valve.

The electric system is provided with a start-stop control unit of an oil pump motor and a forward and reverse rotation control and overload protection unit of a walking motor.

And the upper parts of the top die and the side die are respectively provided with a skylight, the working platform and the hydraulic operating platform.

In conclusion, the self-propelled hydraulic arch frame trolley for the construction of the secondary lining structure of the separated island type underground excavation station disclosed by the embodiment of the utility model adopts the automatic walking of the motor and the hydraulic automatic supporting of the trolley by the integrated circuit control, so that the construction period is shortened, the labor force is reduced, and the construction efficiency is improved; the accuracy of taking one's place of the platform truck is improved, the platform truck is accurately positioned, construction errors are reduced, and construction quality is improved.

In order to more clearly show the technical solutions and the technical effects provided by the present invention, the following detailed description is provided for the embodiments of the present invention with specific embodiments.

Example 1

As shown in fig. 3 and 4:

1. the marked sizes are all millimeters;

2. the trolley is designed to automatically walk, and a full-hydraulic support is matched with a screw rod for supporting;

3. the trolley template is designed to be a combination of a steel arch frame and a small steel mould, and the thickness of the panel is 6 mm; 4. the reverse cantilever beam is divided into two sections, and a manufacturer designs a breakpoint position and a splicing mode according to the load stress condition of the trolley.

The type of the trolley comprises the following main hydraulic automatic walking technical parameters:

the working stroke of the jacking oil cylinder is 280 mm;

the working stroke of the lateral oil cylinder is 300 mm;

the working stroke of the translation oil cylinder is 200 mm;

the steel rail model is as follows: 43Kg/m (H140 mm);

the arch tops of the two sides of the cross section of the trolley are respectively designed by enlarging 1.5 cm.

Design description:

1. the length of the trolley is 4.5 meters;

2. 2 feeding holes and 2 grouting preformed holes are formed in the center of the arch crown of the trolley;

3. each side is provided with 4 (300 x 300) observation ports;

4. 4 lifting hydraulic cylinders of the trolley are arranged, and 4 lateral hydraulic cylinders are arranged; 2 translation hydraulic cylinders are arranged;

the working principle is as follows:

the PBA underground excavation construction method is adopted for a certain underground two-layer separated island type station, each side is a single-span arch-shaped section, the length of a main body of the station is 245.2m, the width of the section of the single side is 13.9m, the height of the section of the single side is 15.98m, 16.17m and 17.48m, the absolute elevation of the rail top at the mileage position of the center of the station is 27.624 m, and the buried depth of the rail top at the center of a circuit is about 24.5 m; the two lining structure construction self-propelled hydraulic arch frame trolleys of the station main body standard section separation island type subway underground excavation station adopt steel templates (the thickness of a steel template panel is 6mm, the size of a rib plate is 8mm 80mm), the size is 600 mm 1500mm, 800 mm 1500mm, 1200 mm 1500mm, 1234 mm 1500mm, 1250 mm 1500mm, all templates are connected through bolts, the bolt hole interval is 135mm, an inner enclosing purlin adopts' 20b channel steel double-piecing, an arch frame is formed by machining 14mm steel plates, a longitudinal 1950mm is arranged, the arch frame and the arch frame are connected through L100 angle steel 10, and a cross rod is transversely arranged every 1.5m of the arch frame.

The components of the specific equipment are as follows:

brief introduction to the device

The lining steel form trolley is designed into a steel support and steel form combined template, a hydraulic oil cylinder is used for demoulding and erecting a mould, a lead screw and a lead screw jack are used for supporting during construction, an electric speed reducer automatically walks, and a concrete conveying pump trolley is used for pouring.

The lining steel mould trolley mainly comprises a walking mechanism, a trolley frame, a steel mould plate, a vertical lifting and lateral stretching and translation mechanism of the mould plate, a hydraulic system and an electrical control system 6

1. Traveling mechanism

The trolley walking adopts two sets of mechanical transmission devices, and the trolley walking is driven to close after being decelerated by a first-stage gear reducer and a two-stage chain. In order to realize the synchronization of the two rammer driving devices, two motors are adopted to start simultaneously; in order to meet the requirements of working conditions, the motor can be operated in forward and reverse directions. The steel mould trolley technology part is formed by three longitudinal beams, two side beams, a plurality of middle beams and upright posts through a hydraulic oil cylinder and a support jack to transfer force to a portal bracket.

2. Bogie frame

The bogie frame is the main bearing member of the whole bogie and is formed by connecting a walking beam, cross beams, upright columns and longitudinal beams through screw inspection, and the cross beams and the upright columns are connected through connecting and diagonal draw bars. The whole portal frame is guaranteed to have sufficient strength, rigidity and stability. The main structure of the hydraulic trolley is welded by steel plates. The transverse beam and the upright post of the portal frame are welded into I-shaped cutting surfaces, and the longitudinal beam adopts a box-shaped section.

3. Steel shuttering

The template is formed by a top die and side dies on two sides into a cross section, the template and the template are connected into a whole through bolts, the top die and the side dies are connected through hinge pins, and each section of template is made to be 1.5 meters wide.

The ring direction is composed of 3 sections, the longitudinal direction is composed of 3 sections to form the lining length, and the templates are connected by bolts. The template is provided with working windows which are arranged in a shape of Chinese character 'ji', and the top of the template is provided with a grouting cap which is connected with a conveying system. The thickness of the template plate is 85mm, and the reinforcing ribs are made of 80x8 strip steel with the spacing of 220 mm. Because the top of the template is stressed greatly, in order to ensure the strength of the template and prevent local deformation, strengthening ribs are added on the template.

4. Translation mechanism

A hydraulic trolley is provided, a set of translation mechanism is arranged in front of and behind the hydraulic trolley, and the hydraulic trolley is supported on a cross beam on the side of the gantry.

Hydraulic oil (GE160/90-300) on the translation trolley is connected with the longitudinal beam of the bracket, the vertical positioning and the demoulding of the template are adjusted through the contraction of an oil cylinder, the stroke of the adjustment is 200ram, the oil cylinder (CE100/50-200) in the horizontal direction is used for adjusting whether the lining center of the template is centered with the center of the tunnel, and the stroke of the adjustment is 100mm left and right.

5. Hydraulic system

The hydraulic system of the trolley adopts a three-position four-way manual reversing valve to reverse, so as to realize the extension and retraction of the oil cylinder. Each group of 2 left and right lateral oil cylinders adopts a reversing valve to control the action of the horizontal oil cylinders on two sides; the four vertical oil cylinders are controlled to act by a reversing valve respectively; the two trolley translation oil cylinders are respectively operated by a reversing valve; the four vertical oil cylinders are locked by using the two-way hydraulic control one-way valve, so that the template is ensured not to fall; when the reversing alarm is in the middle position, the system is unloaded to prevent the system from heating; the straight-return type oil return filter and the integrated valve block simplify the system pipeline.

6. Electrical system

The electric system mainly controls the start and stop of the oil pump motor and the forward and reverse operation of the walking motor. The walking motor is provided with forward and reverse rotation control and overload protection.

Second, main technical parameters

1. A maximum lining length; 4.5m

2. The walking speed; 8m/min

3. The center distance of the tracks; 7.8 m

4. Hydraulic system pressure; pmqx 16MPa

5. Single-side modulus removal of the template; amin 100mm

6. Design with contour radius increased by 15mm

Mounting of trolley

The professional personnel of the trolley guides the installation and debugging on site and is familiar with the operation technology of the trolley. The trolley is installed in a hole, a hoisting anchor rod is fixed on the wall of the hole firstly in the installation in the hole, and the trolley part is hoisted by using the chain block.

Before installation, the clothes must be worn neatly, safety protection measures are made, and installation operation is carried out on the premise of ensuring safety.

The specific installation steps are as follows:

1. determining the installation reference: checking whether the ground meets the design reference requirement according to the general diagram requirement; if the gradient exists, whether the gradient meets the design requirement is checked to ensure the installation reference.

2. Track laying: the rail is a p43kg/m steel rail with the height of 140mm, sleepers with the height of 100mm are arranged under the rail, the rail is fixed, the distance between the sleepers is not more than 500mm, the center distance of the rail is required to meet the design requirement, and the error is not more than 10 mm; the error of the track height is not more than 20 mm; the error between the track center and the tunnel center is not more than 20 mm; the strength of the sleeper should meet the bearing requirements.

3. Mounting a bracket: after the track is installed, the walking wheel frame and the walking beam are fixed on the track, the walking beam is required to be supported on the tops of two sides of the walking beam to prevent the walking beam from turning over, the walking beam is fixed, the center distance is found, then two end upright columns and one end cross beam are assembled into a support, the support is hoisted by utilizing a hoisting device and is installed and connected with the walking beams on two sides, the support on two sides of the walking beam is removed after the support is screwed down on a connecting bolt (note that the support is arranged in the front), and the walking beam and the gantry after being installed can be slowly pushed forward at the moment so as to facilitate installation of the next group of supports. When the bracket is installed, the connection between the cross beam and the walking beam and between the cross beam and each connecting beam must be firm, and each fixing bolt must be screwed tightly; the center of the walking wheel is matched with the center of the track, and the length error of the diagonal line of the whole gantry is not more than 20mm after the whole gantry is installed.

4. A translation mechanism: the translation mechanism is supported on two end beams of the gantry, and the adjusting stroke is adjusted in a stroke middle position.

5. Installing a bracket assembly: firstly, pushing the well-installed support away from a working area below a lifting device, then installing the upper longitudinal beam and the reverse cantilever beam into a whole, wherein the length error of the central line of the two longitudinal beams to the angle is not more than 5mm, slowly lifting the bracket after screwing a fixing bolt, pushing the portal frame to align the positions of the supporting nodes to be in place after the lifting height exceeds the vertical lifting oil cylinder on the portal frame, and installing all supporting jacks after the portal frame is in place. During installation, the central line of the bracket is parallel to the central line of the door frame.

6. Installing a template assembly: the template is installed by firstly jacking the template, hanging the side template after all the jacking templates are installed and leveled, and installing the template connecting beam, each lateral supporting hydraulic cylinder and the screw rod after all the horizontal and longitudinal abutted seams of the template are leveled to meet the use requirements. Pushing away a working area below the hoisting device; then the template to be lifted is transported to the lower part of the lifting device by a vehicle, and when the lifted object reaches the height, the trolley is slowly pushed back to be in place.

7. And installing a hydraulic pump station and a hydraulic pipeline, and integrally debugging after matching with an electric circuit.

8. And (3) checking of each component: after the trolley is installed, comprehensively checking whether connection of all parts is loosened; whether the pins of all parts can flexibly rotate or not; whether the telescopic lengths of the screw rod and the screw rod jack meet the design requirements or not; whether the hydraulic parts and the pipelines have leakage or not; whether the electrical connection is safely insulated, etc.

9. Checking each design size; whether each design size of detection platform truck reaches the designing requirement, if: trolley track to vault height; theoretical contour dimension of the template; the center distance between the template and the track; detecting the height difference of the left rail surface and the right rail surface; and detecting whether the heights of the left edge and the right edge of the template and the foundation are consistent with the designed size. Confirming that the installation and debugging of the trolley meet the design requirements, finally installing trolley template overturn prevention measures, and after the template overturn prevention measures are installed, formally finishing the installation of the trolley and meeting the use requirements.

Installation considerations:

1. and (3) before each working cycle, whether the steel rail is straight or not is checked, whether the center distance of the steel rail is aligned with the center distance of the lining or not is checked, and the firmness of the steel rail is detected. Before the trolley is in place, the steel rail must be laid straight, and the portal support jack cannot be supported on the steel rail.

2. After each working cycle, the tightness of the bolts and pins of each part is checked, and the fastening of the various coupling parts is rechecked.

3. The trolley travelling mechanism and the screw rod jack need to be periodically greased.

4. The hydraulic system should not have the phenomenon of revealing, and hydraulic oil should be clean, and the manometer switch should be opened during operation, observes the undulant condition of pressure at any time.

5. When the steel formwork trolley travels, no obstacles such as air pipes, water pipes and the like are required between the lower end of the side formwork and the ground, and the phenomenon of dragging when the trolley travels is strictly prevented.

6. After the trolley is in place, the operator should first wedge the wheels of the trolley with wooden wedges and then position the trolley under the direction of the measuring personnel. When the trolley deviates greatly, the oil cylinders are symmetrically adjusted in times to enable the trolley to meet the requirements; when the trolley is positioned to be qualified, screwing the screw jacks at the bottom of the trolley, and then screwing the jacks at the two sides of the trolley symmetrically in sequence; when all the screw jacks of the trolley are screwed in place, the jacks of the hydraulic oil cylinder are loosened to protect the oil cylinder.

7. Before concrete pouring, the trolley ground lead screw jack must be firmly propped against the ground.

8. In the concrete pouring process, the pouring is called, the height difference of the concrete on two sides is not more than 0.5m, when the square amount of the concrete of the formwork is large, the pouring speed is properly slowed down, and the formwork viewing strength is increased; during capping, the hole packers close to the ends of the upper dies are moved forward one by one, a specially-assigned person is arranged to watch the end dies, when the concrete reaches the end die, the pumping speed is slowed down, and the person watching the dies directs pumping until the concrete is fully capped.

9. The construction electricity is needed to be introduced into a three-phase five-wire system power supply, otherwise, the leakage circuit breaker cannot play a role in leakage protection tripping.

10. The illumination on the trolley should use safe voltage, and the working lamp is provided with a protective cover.

11. When vehicles pass under the trolley during construction, the vehicles slow down, and special traffic dispersion personnel command passing vehicles on site to strictly prevent the vehicles from colliding with the trolley.

12. Fire-fighting equipment must be equipped on the trolley, and special personnel are equipped to regularly and comprehensively check the trolley, so that potential safety hazards are eliminated.

Fourthly, a trolley formwork

Before the trolley supports the formwork, all the screw rods are loosened, screw rod pins at the end of the profiling plate are removed, the screw rods droop to ensure that no obstacle exists in the stroke of the hydraulic cylinder, and a hydraulic system can be started; and operating the hydraulic lateral oil cylinder support side die to enable the outline of the template to reach the designed construction size, then firmly supporting all the support screw rods, and finally sending a specially-assigned person to check all the screw rod supports to confirm that each support is firm so as to carry out pouring operation.

Fifth, pouring by trolley

During pouring, the left side and the right side are symmetrically poured to avoid that one side is poured too much to cause the trolley to move laterally, and when pouring is fast full, the pouring condition is closely noticed to avoid excessive pouring to cause deformation of the lower couch and the portal frame of the top template due to overlarge pressure of the conveying pump.

Sixthly, a trolley collecting mould

The trolley die-collecting and die-supporting have the same functions as those of die-supporting, and the hydraulic cylinder die-collecting can be operated without any obstacle in the stroke of the hydraulic cylinder, otherwise, the hydraulic system and the die plate can be damaged.

Seventh, the trolley moves

The template is required to be withdrawn and the upper side and the lower side of the front part are required to be checked before the trolley moves, so that no obstacle is ensured, after the condition of track laying is checked to meet the moving condition of the trolley, the anti-displacement screw rod between the upright post and the upper enclosing purlin is tightened to keep the stability of the trolley during running, the trolley is required to be withdrawn by paying attention to the screw rod jack between the running beam and the steel rail, and otherwise, the running mechanism is damaged. After the trolley moves in place, a wedge-shaped cushion block is added below the front wheel and the rear wheel to prevent the trolley from sliding. Then the next operation can be carried out by putting the screw rod jack under the walking beam in place.

The hydraulic screw supporting and adjusting trolley is integrally installed on the track, positioning is accurate, all hydraulic screws are controlled to be supported simultaneously, and stress uniformity of all the hydraulic screws is guaranteed.

In the specific implementation:

the arch frame connection mode is hinge connection, and can also adopt clip connection;

the trolley supporting mode is a hydraulic screw supporting mode, and a jack supporting mode can also be adopted;

the trolley travelling mechanism is an electric motor self-travelling mechanism, and a manual/electric hoist traction travelling mechanism can also be adopted.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims. The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is already known to a person skilled in the art.

Claims (5)

1. A self-propelled hydraulic arch frame trolley for construction of a secondary lining structure of a separate island type underground excavation station is characterized by comprising a travelling mechanism, a trolley frame, a template assembly, a template vertical lifting and lateral stretching and translation mechanism, a hydraulic system, an electrical control system and a working platform;

the travelling mechanism comprises four groups of travelling wheels arranged on the longitudinal track, wherein two groups of driving travelling wheels are respectively provided with a motor, each motor is connected with the travelling wheels through a primary gear reducer and a two-stage chain speed reducing mechanism, and a synchronous forward and reverse rotating mechanism is arranged between the two motors;

the trolley frame comprises two walking beams fixed on the four groups of walking wheels, two cross beams are arranged on the two walking beams, an inter-cross-beam bridging is connected between the two cross beams, and a screw jack is arranged between the inter-cross-beam bridging and the foundation of the longitudinal rail;

the template assembly comprises a group of top molds and two groups of side molds, wherein the top molds and the side molds are respectively fixed on the arch ring and are connected through hinge trunnions;

a bracket is arranged on the inner side of the arch ring of the top die, the bracket comprises an upper longitudinal beam, a transverse inverted cantilever beam is fixed below the upper longitudinal beam, the inverted cantilever beam and the arch ring of the top die are supported, and a screw jack is arranged between the cross beam and the inverted cantilever beam;

an inner enclosure is arranged on the inner side of an arch ring of the side die, and a two-way screw rod is arranged between the inner enclosure and the trolley frame and between the inner enclosure and the foundation of the longitudinal rail;

the template vertical lifting, lateral stretching and translation mechanism comprises a vertical oil cylinder, a horizontal oil cylinder and a lateral oil cylinder;

the vertical oil cylinder is supported between the cross beam and the upper longitudinal beam, the horizontal oil cylinder is connected between the base of the cross beam and the vertical oil cylinder, and the lateral oil cylinder is connected between the inner enclosure and the trolley frame.

2. The split island type underground excavation station secondary lining structure construction self-propelled hydraulic arch frame trolley according to claim 1, wherein the adjusting stroke of the vertical oil cylinder is 200ram, and the left and right adjusting stroke of the horizontal oil cylinder is 100 mm.

3. The separation island type subway underground excavation station two-lining structure construction self-propelled hydraulic arch frame trolley as claimed in claim 1, wherein the hydraulic pipeline of the hydraulic system is provided with a direct-return type return oil filter and an integrated valve block, and is respectively connected with the vertical oil cylinder, the horizontal oil cylinder and the lateral oil cylinder through three-position four-way manual reversing valves, the hydraulic pipelines of the four vertical oil cylinders are provided with two-way hydraulic control one-way valves, and the hydraulic pipelines of the lateral oil cylinders are provided with one-way throttle valves.

4. The split island type underground excavation station secondary lining structure construction self-propelled hydraulic arch frame trolley as claimed in claim 1, wherein the electrical control system is provided with a start-stop control unit of an oil pump motor and a forward and reverse rotation control and overload protection unit of a traveling motor.

5. The separation island type subway underground excavation station secondary lining structure construction self-propelled hydraulic arch frame trolley according to claim 1, wherein the upper portions of the top die and the side dies are respectively provided with a skylight, and the working platform is provided with a hydraulic operating platform.

Images