CN109455169B - Construction method for turning over and transporting concrete tank truck in tunnel - Google Patents
Construction method for turning over and transporting concrete tank truck in tunnel Download PDFInfo
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- CN109455169B CN109455169B CN201910021471.3A CN201910021471A CN109455169B CN 109455169 B CN109455169 B CN 109455169B CN 201910021471 A CN201910021471 A CN 201910021471A CN 109455169 B CN109455169 B CN 109455169B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S13/00—Vehicle-manoeuvring devices separate from the vehicle
- B60S13/02—Turntables; Traversers
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- Mechanical Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
A construction method for turning over and transporting concrete tanker in tunnel includes such steps as towing the electrically driven platform to the position near the lower structure operating point in shield tunnel by towing vehicle, installing two fixed T-shaped guide ramps at both ends of rotary platform, moving the concrete tanker running in forward direction to two steel pedals by said guide ramps, braking, starting motor to drive planetary gear on speed reducer, driving transition gear by planetary gear to make the steel sleeve rotate at low speed until the concrete tanker turns by 180 deg, turning off motor when the angle is close to 180 deg, locating the concrete tanker at the lower structure operating point in shield tunnel, moving the concrete tanker out of shield tunnel, and repeating said steps, the construction progress of the lower structure in the shield tunnel is improved.
Description
Technical Field
The invention belongs to the technical field of shield tunnel substructure construction, and particularly relates to a construction method for turning over and transporting a concrete tank truck in a tunnel.
Background
After shield tunnel link up, the tunnel begins to carry out the substructure construction, concrete cushion need begin to spread whole tunnel from the entrance to a cave in substructure's work progress, but because the tunnel inner space is less, the concrete tank wagon generally backs a car and goes to the substructure operation point and carry out the ejection of compact, then forward goes out the hole, along with transportation distance's gradual increase, it makes things harder even collision section of jurisdiction to back a car to go, the transit time increases in a large number, increase the construction degree of difficulty, seriously restrict whole substructure concrete cushion pouring period.
Disclosure of Invention
The construction method comprises the steps of driving the concrete tank truck to a lower structure operation point in the shield tunnel in a forward direction, and turning the concrete tank truck in the tunnel through an electrically driven truck-turning platform arranged near the lower structure operation point in the shield tunnel, so that potential safety hazards caused by the fact that the concrete tank truck is turned over in the tunnel can be avoided, the purpose of rapidly transporting the concrete tank truck can be achieved, and normal construction of concrete pouring operation of the lower structure in the shield tunnel is guaranteed.
In order to achieve the purpose, the invention adopts the following technical scheme:
a construction method for turning over and transporting a concrete tank truck in a tunnel uses an electric driving shunting platform, wherein the electric driving shunting platform comprises a steel frame, a rotary platform, a turntable bearing, a supporting wheel, an annular track, a universal wheel, a double-T-shaped guide inclined platform, a transition gear, a planetary gear, a speed reducer and a motor, and is characterized in that:
the rectangular I-shaped double-layer splicing structure is formed by connecting a rectangular I-shaped steel frame with four universal wheels along the periphery of the rectangle of the I-shaped steel frame, an annular rail is connected to the upper end of the I-shaped steel frame, the outer diameter of the annular rail is larger than the width of the I-shaped steel frame, an outer steel sleeve is connected to the upper end of the I-shaped steel frame according to the central point of the annular rail, and the inner diameter of the outer steel sleeve is equal to the outer diameter of the outer ring of the turntable bearing;
the rotary platform comprises an external tooth steel sleeve, a net-shaped I-steel, fan-shaped steel pedals, a round bottom plate, an inner steel sleeve and supporting wheels, wherein the external diameter end face of the external tooth steel sleeve is provided with external teeth with a modulus M, the internal diameter end face of the external tooth steel sleeve is connected with the net-shaped I-steel, the round bottom plate is connected with the lower end face of the net-shaped I-steel, the external diameter of the round bottom plate is smaller than the external diameter of the external tooth steel sleeve but larger than the external diameter of an annular track, the lower end of the round bottom plate is connected with the inner steel sleeve according to the central point of the rotary platform, the external diameter of the inner steel sleeve is equal to the internal diameter of a turntable bearing inner ring, the lower end of the round bottom plate is connected with a plurality of supporting wheels at equal intervals, the revolution center line of the plurality of supporting wheels is equal to the diameter of the annular track and enables the plurality of supporting wheels to rotate along the annular track, the upper end face of the net-shaped I-steel is connected with the two fan-shaped steel pedals and enables the two fan-shaped steel pedals to be in an H shape on the net-shaped I-shaped steel, the outer diameter of the H-shaped fan-shaped steel pedal is smaller than the diameter of the section of the tunnel, and the width of the H-shaped fan-shaped steel pedal is slightly larger than the width of two wheels of the concrete tank truck;
connecting a turntable bearing outer ring into the outer steel sleeve, connecting a turntable bearing inner ring out of the inner steel sleeve, butting a rotating platform with a tool steel frame through a turntable bearing, connecting a rotating shaft on one side of the tool steel frame in the length direction, connecting a transition gear on the rotating shaft, wherein the transition gear is meshed with the external teeth and is meshed with a planetary gear, the planetary gear is connected onto an output shaft of a speed reducer, an input shaft of the speed reducer is connected with a motor through a coupler, and the speed reducer and the motor are connected and fixed on one side of the tool steel frame without interfering the rotation of the rotating platform, so that the assembly of the electrically-driven shunting platform is completed;
when the concrete tank truck is turned around and transported in the tunnel, firstly, the electrically driven shunting platform is dragged to the vicinity of the operation point of the lower structure in the shield tunnel according to the length direction by a tractor, then the front end and the rear end of the rotating platform are respectively provided with a fixed double T-shaped guide inclined platform, the upper end surface of the double T-shaped guide inclined platform is required to be flush with the two fan-shaped steel pedals, the concrete tank truck which runs in the forward direction is driven to the two fan-shaped steel pedals by the double T-shaped guide inclined platform and braked, the motor is started to drive the planetary gear on the reducer to rotate, at the moment, the planetary gear drives the transition gear to enable the external tooth steel sleeve to rotate at low speed until the concrete tank truck turns about 180 degrees, the shutdown of the motor is controlled when the turning direction is close to 180 degrees, finally, the slurry discharging position of the concrete tank truck is positioned at the operation point of the lower structure in the shield tunnel, and the concrete tank truck can be driven out of the shield tunnel in the forward direction after the slurry discharging is finished, completing one construction of turning the concrete tank car to transport in the tunnel;
with the continuous depth expansion of the operation point of the lower structure in the tunnel, the whole construction of turning the concrete tank car in the tunnel can be completed by repeating the construction process.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
1. the electric driving shunting platform is formed by assembling the steel frame, the rotating platform, the turntable bearing, the supporting wheel, the annular track, the universal wheel, the double-T-shaped guide inclined table, the transition gear, the planetary gear, the speed reducer and the motor, has a simple structure, can realize 360-degree rotation of the concrete tank truck in the tunnel with insufficient space, solves the problem that the concrete tank truck can only run in one direction and can not turn around in the tunnel with insufficient space, can continuously repeat the process of turning around and transporting the concrete tank truck in the tunnel along with continuous depth expansion of a lower structure operation point in the tunnel, and improves the construction progress of the lower structure in the shield tunnel.
2. The electrically-driven shunting platform used by the invention rotationally shunts the concrete tank car by adopting a mode that the motor controls the speed reducer to drive the planetary gear, the transition gear and the rotating platform to rotate, and solves the problems of high cost and high possibility of damage of the hydraulically-driven shunting platform.
Drawings
FIG. 1 is a schematic block diagram of the electrically driven shunting platform of the present invention;
FIG. 2 is an enlarged schematic partial view of the structure of the portion I in FIG. 1;
FIG. 3 is a diagrammatic top view of FIG. 1;
in the above figures: 1-steel frame, 2-rotary platform, 3-turntable bearing, 4-supporting wheel, 5-annular track, 6-universal wheel, 7-double T-shaped guide inclined platform, 8-transition gear, 9-planetary gear, 10-speed reducer and 11-motor.
Detailed Description
The invention solves the problem of how to turn around and transport a concrete tank truck in a tunnel in the construction process of a lower structure in a shield tunnel, and mainly solves the following problems:
1. the shield tunnel inner space is less, and the concrete tank car generally backs a car and traveles to the substructure operation point and carry out the ejection of compact, then forward traveles out the hole, along with transportation distance's gradual increase, backs a car and traveles and make an increasing difficulty or even collide the section of jurisdiction, and this kind of condition has seriously restricted the pouring time limit of whole substructure concrete cushion.
2. The hydraulic driving part of the hydraulic driving shunting platform is expensive and easy to damage, and is not suitable for the shunting transportation of the concrete tank car in the tunnel.
With reference to the attached drawings 1-3, the electric driving shunting platform comprises a steel frame 1, a rotary platform 2, a turntable bearing 3, a supporting wheel 4, an annular track 5, a universal wheel 6, a double-T-shaped guide inclined platform 7, a transition gear 8, a planetary gear 9, a speed reducer 10 and a motor 11, wherein the motor controls the speed reducer to be electrically controlled conventionally, the planetary gear, the transition gear and the external teeth are meshed to generate rotation in one direction, so that the rotation function of the rotary platform can be met, and the construction process of shunting transportation of the electric driving shunting platform and a concrete tank truck in a tunnel refers to the technical scheme and is not repeated.
Although technical obstacles do not exist in the purchase and assembly of the components, the effect of solving the problems is obvious, after the electric driving shunting platform is assembled and used, the concrete tank car does not need to run in the shield tunnel in a backing mode, the potential safety hazard caused by backing of the concrete tank car is avoided, the safe transportation efficiency of the lower-part structure concrete in the shield tunnel is improved, and the electric driving shunting platform has the characteristics of low cost, difficult damage and the like compared with a hydraulic driving shunting platform, so that the economic benefit and the social benefit obtained by the construction method for shunting and transporting the concrete tank car in the tunnel are obvious.
Claims (1)
1. A construction method for turning over and transporting a concrete tank truck in a tunnel uses an electric driving shunting platform, wherein the electric driving shunting platform comprises a steel frame (1), a rotating platform (2), a turntable bearing (3), a supporting wheel (4), an annular track (5), a universal wheel (6), a double-T-shaped guide inclined platform (7), a transition gear (8), a planetary gear (9), a speed reducer (10) and a motor (11), and is characterized in that:
the rectangular I-shaped double-layer splicing structure is arranged on the I-shaped steel frame (1), four universal wheels (6) are connected around the rectangle of the I-shaped steel frame (1), an annular track (5) is connected to the upper end of the I-shaped steel frame (1), the outer diameter of the annular track (5) is larger than the width of the I-shaped steel frame (1), an outer steel sleeve is connected to the upper end of the I-shaped steel frame (1) according to the central point of the annular track (5), and the inner diameter of the outer steel sleeve is equal to the outer diameter of the outer ring of the turntable bearing (3);
the rotary platform (2) comprises an external tooth steel sleeve, a net-shaped steel, fan-shaped steel pedals, a round bottom plate, an inner steel sleeve and supporting wheels (4), wherein the external diameter end face of the external tooth steel sleeve is provided with external teeth with a modulus M, the net-shaped steel is connected with the internal diameter end face of the external tooth steel sleeve, the round bottom plate is connected with the lower end face of the net-shaped steel, the external diameter of the round bottom plate is smaller than the external diameter of the external tooth steel sleeve but larger than the external diameter of an annular track (5), the lower end of the round bottom plate is connected with the inner steel sleeve according to the central point of the rotary platform (2), the external diameter of the inner steel sleeve is equal to the internal diameter of an inner ring of a turntable bearing (3), the lower end of the round bottom plate is connected with a plurality of supporting wheels (4) at equal intervals, the revolution central line of the plurality of the supporting wheels (4) is equal to the diameter of the annular track (5), the plurality of the supporting wheels (4) are rotated along the annular track (5), the two fan-shaped steel pedals are connected with the upper end face of the net-shaped steel, and the two fan-shaped steel pedals are connected with each other The H-shaped fan-shaped steel pedals are smaller than the diameter of the section of the tunnel in outer diameter and slightly larger than the width of two wheels of the concrete tank truck in width;
connecting an outer ring of a turntable bearing (3) in the outer steel sleeve, connecting an inner ring of the turntable bearing (3) outside the inner steel sleeve, then connecting a rotary platform (2) with a worker steel frame (1) through the turntable bearing (3), connecting a rotating shaft on one side of the worker steel frame (1) in the length direction, connecting a transition gear (8) on the rotating shaft, wherein the transition gear (8) is meshed with the outer teeth and the planetary gear (9), the planetary gear (9) is connected on an output shaft of a speed reducer (10), an input shaft of the speed reducer (10) is connected with a motor (11) through a coupler, the speed reducer (10) and the motor (11) are connected and fixed on one side of the worker steel frame (1) without hindering the rotation of the rotary platform (2), and thus finishing the assembly of the electrically driven shunting platform;
when the concrete tank truck is turned around and transported in a tunnel, an electric driving shunting platform is firstly dragged to the vicinity of a lower structure operation point in the shield tunnel by a tractor in the length direction, then fixed double T-shaped guide inclined tables (7) are respectively assembled at the front end and the rear end of a rotating platform (2), the upper end surfaces of the double T-shaped guide inclined tables (7) are required to be flush with two fan-shaped steel pedals, the concrete tank truck which runs in the forward direction is driven to the two fan-shaped steel pedals by the double T-shaped guide inclined tables (7) and braked, a motor (11) is started to drive a planetary gear (9) on a speed reducer (10) to rotate, at the moment, the planetary gear (9) drives a transition gear (8) to enable an external tooth steel sleeve to rotate at a low speed to about 180 degrees of the concrete tank truck, the shutdown of the motor (11) is controlled when the steering is close to 180 degrees, and finally the slurry discharging position of the concrete tank truck is just at the lower structure operation point in the shield tunnel, after the slurry is discharged, the concrete tank car can be positively driven out of the shield tunnel, and one-time construction of turning around and transporting the concrete tank car in the tunnel is completed;
with the continuous depth expansion of the operation point of the lower structure in the tunnel, the whole construction of turning the concrete tank car in the tunnel can be completed by repeating the construction process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910021471.3A CN109455169B (en) | 2019-01-10 | 2019-01-10 | Construction method for turning over and transporting concrete tank truck in tunnel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910021471.3A CN109455169B (en) | 2019-01-10 | 2019-01-10 | Construction method for turning over and transporting concrete tank truck in tunnel |
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| CN109455169A CN109455169A (en) | 2019-03-12 |
| CN109455169B true CN109455169B (en) | 2021-11-23 |
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| CN110053539A (en) * | 2019-03-27 | 2019-07-26 | 中铁隧道股份有限公司 | A kind of mobile tunnel engineering truck rotating platform and its application method |
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| CN109455169A (en) | 2019-03-12 |
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