CN113481820A - Bidirectional balance type lifting bridge - Google Patents

Abstract

The invention discloses a bidirectional balanced type lifting bridge, which comprises a tower-bridge system, a power system, a matching system and an operation auxiliary system, wherein the tower-bridge system is connected with the power system through a cable; the tower-bridge system comprises a tower frame, a rolling support part at the top of the tower frame, a flexible force transmission part which is matched to bypass the rolling support part and has two downward ends, and a pair of bridge bodies which are respectively and horizontally suspended at two ends of the flexible force transmission part; the power system is used for driving the two bridge bodies to alternatively lift between the low position and the high position; the matching system comprises passing facilities arranged at a low position and a high position, and the passing facilities comprise butt joint tracks butted with train tracks on the in-place bridge body; the operation auxiliary system comprises a guide device for preventing the bridge body from shaking, a locking device for locking the bridge body with the tower after the bridge body is in place, and a positioning and locking device for positioning and locking two sides of the end part of the bridge body. The invention can stably and safely lift the land vehicle at a high distance, can pass in two directions, improves the passing efficiency, reduces the overall cost, and is suitable for areas with large relief.

Description

Bidirectional balance type lifting bridge

Technical Field

The invention relates to a traffic facility, in particular to a bidirectional balanced type lifting bridge.

Background

When land vehicles such as automobiles, trains, special large transport vehicles and the like need to pass through areas with large relief, such as mountains, rivers, basin edges and the like, traffic infrastructures such as trails, tunnels, viaducts and the like are generally adopted to solve the problem of fall, but the following problems still exist at present:

1) the construction cost of the winding mountain road is high, the construction amount is large, and the passing efficiency is low; and trains cannot pass through, and special large transport vehicles are limited to pass through.

2) The tunnel construction cost is high, the construction amount is large, and the construction difficulty coefficient and the danger coefficient are high; and the application range is narrow due to the restriction of construction geological conditions, tunnel construction cannot be carried out or is not suitable for a lot of geology, so that trains cannot pass through, and the passing of automobiles and special large-scale transport vehicles is limited.

3) The viaduct has high construction cost and large construction amount, and mountains or tunnels can be required to be opened along the way, so that the cost is further increased; when a mountain cannot be driven or a tunnel cannot be arranged due to geological, environmental protection or cost reasons, in order to ensure a safe slope, the mountain cannot be extended any more or a tunnel cannot be detoured to a gentle area; when the train is not extended any more, the train needs to be transported through other ways, so that the passing time is increased, the train cannot be transported and cannot continue to pass, and the transportation of the automobile and the special large transport vehicle is limited; when the vehicle walks to the gentle area, the meeting conditions are extremely harsh, the vehicle cannot be generally applied, and the cost and the passing time are increased.

From the above, when the land transportation needs to pass through an area with large relief, the problems of no traffic, limited traffic, low traffic efficiency and high traffic infrastructure cost still exist.

Disclosure of Invention

The invention aims to provide a bidirectional balanced lifting bridge, which can stably and safely lift a land vehicle at a high distance, realize bidirectional passing, improve the passing efficiency, reduce the overall cost and is suitable for areas with large relief.

The technical scheme adopted by the invention is as follows:

a bidirectional balanced type lifting bridge comprises a tower-bridge system, a power system, a matching system and an operation auxiliary system; the tower-bridge system comprises at least two towers, a rolling support piece arranged at the top of the towers, a flexible force transmission piece which is matched to pass around the rolling support piece and has two downward ends, and a pair of bridge bodies which are respectively and horizontally suspended at the two ends of the flexible force transmission piece, wherein the rolling support piece is a gear train consisting of small support wheels or a single large support wheel, the flexible force transmission piece is a chain or a steel cable, and a train track is laid on the bridge bodies; the power system is used for driving the two bridge bodies to alternatively lift between the low position and the high position and has a braking function; the matching system comprises passing facilities arranged at a low position and a high position, and the passing facilities comprise butt joint tracks butted with train tracks on the in-place bridge body; the operation auxiliary system comprises a guide device, a locking device and a positioning locking device, wherein the guide device comprises guide rails arranged on the tower and guide wheels arranged on two sides of the bridge body and matched with the guide rails, the guide wheels are used for preventing the bridge body from shaking, the locking device is arranged on the bridge body and used for locking the bridge body with the tower after the bridge body is in place, and the positioning locking device is positioned near the end part of the bridge body after the bridge body is in place and used for positioning and locking two sides of the end part of the bridge body.

Furthermore, the bridge body adopts double layers, the upper layer is a non-train layer, the lower layer is a train layer with train tracks, and the passing facility also comprises a highway bridge butted with the upper layer of the bridge body in place.

Further, the power system comprises a transmission device and a power device, the transmission device comprises a driven sprocket connected with the rolling support piece, a driving sprocket arranged on the ground at the bottom of the tower frame, and a transmission chain matched and sleeved on the driving sprocket and the driven sprocket, the power device comprises a motor, a speed reducer, a transmission case, an electric brake and a manual brake which sequentially transmit power, the transmission case is connected with a shaft of the driving sprocket, the driven sprocket can drive the rolling support piece to move, and the flexible transmission piece adopts a chain.

Further, the power system comprises a power device and a transmission device, the power device comprises a winch arranged on the ground at the bottom of the tower, the winch is provided with a manual brake and an electric brake, the transmission device comprises a transmission rope and a fixed pulley, the middle of the transmission rope is matched with the winch, two ends of the transmission rope penetrate through the fixed pulley and then upwards respectively connected with the bridge bodies on two sides, and the transmission rope is tightened on one side and loosened on the other side when the winch works.

Furthermore, the matching system also comprises a butt joint fine adjustment device for fine adjusting the position of the butt joint track, wherein the butt joint fine adjustment device comprises a supporting plate, a track beam, a hinged support, a rotary table, an up-down mechanism, a front-back mechanism and a left-right mechanism; the butt joint track and the sleeper are installed on the supporting plate, the supporting plate can be supported on the track beam in a front-back sliding mode, the bottom of the tail end of the track beam is installed on the rotary table through a hinged support, the up-down mechanism is located at the head end of the track beam and used for driving the head end of the track beam to swing up and down around the hinged support, the front-back mechanism is used for driving the supporting plate to move back and forth along the track beam, and the left-right mechanism is located at the front portion of the track beam and used for driving the front portion of the track beam to swing left and right around the rotary table.

Furthermore, the front and rear mechanism comprises a rack fixedly arranged at the bottom of the supporting plate and a rack driving assembly arranged on the track beam, and a gear at the transmission tail end of the rack driving assembly is meshed with the rack; the rack driving assembly comprises a gear transmission box, the input end of the gear transmission box is connected with a hand wheel, and the hand wheel is manual or electric.

Furthermore, the left mechanism and the right mechanism comprise fixed gears fixedly arranged on the track beam or the supporting plate and a reactive torque assembly arranged on the track beam, and gears at the transmission tail ends of the reactive torque assembly are meshed with the fixed gears; the reaction torque assembly comprises a worm arranged on the track beam, a hand wheel for driving the worm, a worm wheel arranged on the track beam and meshed with the worm, and a gear fixed with a worm wheel shaft system, wherein the gear is meshed with a fixed gear, and the hand wheel is manual or electric.

Further, the matching system also comprises marshalling stations arranged at the low position and the high position, and the marshalling stations are used for weighing, counting, marshalling and sending the weight balance vehicles to the lighter bridge bodies so as to balance the working weight of the two bridge bodies.

Furthermore, the operation auxiliary system also comprises a supporting device positioned near the end part of the in-place rear axle body and used for supporting the end part of the in-place rear axle body, and the supporting device comprises an extending mechanism and a jacking mechanism; the external extending mechanism comprises a fixed arm and a movable arm which are in sliding fit, a lead screw arranged on the fixed arm, a motor and a speed reducer for driving the lead screw, and a nut seat which is matched with the lead screw and arranged on the movable arm; the jacking mechanism comprises a jack arranged on the movable arm, a motor for driving the jack and a speed reducer.

Furthermore, the guide wheel adopts a floating structure, the guide wheel is installed on a bearing seat, the bottom of the bearing seat is in sliding fit with a supporting cylinder, the supporting cylinder is installed on the bridge body, a screw rod is arranged at the bottom of the bearing seat, a baffle plate is arranged in the supporting cylinder, the screw rod penetrates through the baffle plate, a spring and a nut are respectively sleeved on two sides of the baffle plate, the spring is pressed between the baffle plate and the bearing seat, and the nut is used for pre-tightening the spring.

The invention has the beneficial effects that:

the invention can lift the land transportation means, especially the train, with high distance, the operation auxiliary system ensures the stability and safety of the lifting process, the matching system ensures the land transportation means to go on directly after lifting in place, the tower-bridge system adopts a balance structure, which not only reduces the energy consumption of the power system, but also can simultaneously realize the descending of the high land transportation means and the ascending of the low land transportation means, namely, can realize two-way passing The plateau areas of provinces such as Tibet can be connected with plateau and plain areas, so that the construction difficulty is reduced, and the overall construction cost is saved.

Drawings

Fig. 1 is a front view of a bidirectional balanced lift bridge in an embodiment of the present invention.

Fig. 2 is an enlarged view at a in fig. 1.

Fig. 3 is a side view of a bidirectional balanced lift bridge in an embodiment of the present invention.

Fig. 4 is an enlarged view of fig. 3 at B.

Fig. 5 is an enlarged view at C in fig. 4.

Fig. 6 is a top view of the bidirectional balanced type lift bridge in the embodiment of the present invention.

Fig. 7 is an enlarged view at D in fig. 6.

FIG. 8 is a front cross-sectional view of a wheel train in which the rolling support is a small support wheel according to an embodiment of the present invention.

Fig. 9 is a top view of fig. 8 (with the protective cover removed).

Fig. 10 is a front view of a docking station according to an embodiment of the present invention.

Fig. 11 is a cross-sectional view at E-E in fig. 10.

Fig. 12 is a cross-sectional view at F-F in fig. 10.

Fig. 13 is a cross-sectional view at G-G in fig. 10.

Fig. 14 is a top view of a docking station according to an embodiment of the present invention.

Fig. 15 is a cross-sectional view at H-H in fig. 14.

Fig. 16 shows a first embodiment of a holding assembly according to the present invention.

Fig. 17 is a side view of fig. 16.

FIG. 18 shows a second embodiment of the holding assembly according to the present invention.

Fig. 19 is a side view of fig. 18.

FIG. 20 is a schematic view of the mounting of the jockey wheel in an embodiment of the invention.

Fig. 21 shows a first form of the fitting structure of the guide wheel and the guide rail according to the embodiment of the invention.

Fig. 22 shows a second form of the fitting structure of the guide wheel and the guide rail according to the embodiment of the invention.

Fig. 23 is an operational view (in plan view) of the locking device in the embodiment of the present invention.

Fig. 24 is a schematic view (front view) of the positional relationship of the locking device and the guide wheel in the embodiment of the present invention.

Figure 25 is a schematic view of a positioning and locking device in an embodiment of the invention.

In the figure: 1-controlling a blending center; 2-a tower; 3-a connecting frame; 4-a bridge; 5-a pull rope; 6-a driving sprocket; 7-train; 8-a motor of the power system; 9-speed reducer of power system; 10-an electric brake; 11-a manual brake; 12-a transmission case; 13-a holding means; 14-a car; 15-step ladder; 16-a rolling support; 17-a driven sprocket; 18-a drive chain; 19-a flexible force transfer member; 20-a guide wheel; 21-train track; 22-marshalling stations; 23-a highway bridge; 24-docking a rail; 25-positioning the locking device; 26-a locking device; 27-an elevator; 28-a protective cover; 29-hinged support; 30-a turntable; 31-crosstie; 32-a pallet; 33-a track beam; 34-left and right mechanisms; 35-a front-back mechanism; 36-up-down mechanism; 37-electric jack; 38-a rack; 39-gear box; 40-hand wheel of front and back mechanism; 41-gears of the front and rear mechanism; 42-fixed gear; 43-gears of left and right mechanisms; 44-worm bearing seats; 45-worm gear; 46-worm gear bearing seat; 47-a worm; 48-handwheel of left and right mechanism; 49-jacks for holding the device; 50-a motor and a speed reducer of the jacking mechanism; 51-a movable arm; 52-a fixed arm; 53-motor and reducer of the overhanging mechanism; 54-a lead screw; 55-a nut seat; 56-support cylinder; 57-screw rod; 58-bearing seat; 59-a spring; 60-a baffle plate; 61-a nut; 62-a guide rail; 63-the motor of the locking device; 64-a reducer of the locking device; 65-jacks for locking devices; 66-a friction disk; 67-positioning head; 68-positioning the locking device jack; 69-positioning a speed reducer of the locking device; 70-positioning the motor of the locking device.

Detailed Description

The invention is further described below with reference to the figures and examples.

As shown in fig. 1 to 7, a bidirectional balanced type lifting bridge comprises a tower-bridge system, a power system, a matching system and an operation auxiliary system; the tower-bridge system comprises at least two towers 2, a rolling support piece 16 arranged at the top of the towers 2, a flexible force transmission piece 19 which is matched to pass around the rolling support piece 16 and has two downward ends, and a pair of bridge bodies 4 respectively and horizontally suspended at two ends of the flexible force transmission piece 19, wherein the rolling support piece 16 is a wheel train consisting of small support wheels or a single large support wheel, the flexible force transmission piece 19 is a chain or a steel cable, and a train track 21 is laid on each bridge body 4; the power system is used for driving the two bridge bodies 4 to alternatively lift between a low position and a high position and has a braking function; the matching system comprises a passing facility arranged at a low position and a high position, and the passing facility comprises a butt joint rail 24 which is in butt joint with the train rail 21 on the in-position bridge body 4; the operation auxiliary system comprises a guide device, a locking device 26 and a positioning locking device 25, wherein the guide device comprises guide rails 62 arranged on the tower 2 and guide wheels 20 which are arranged on two sides of the bridge body 4 and matched with the guide rails 62, the guide device is used for preventing the bridge body 4 from shaking, the locking device 26 is arranged on the bridge body 4 and used for locking the bridge body 4 with the tower 2 after the bridge body 4 is in place, and the positioning locking device 25 is positioned near the end part of the bridge body 4 after the bridge body is in place and used for positioning and locking two sides of the end part of the bridge body 4. The invention can lift the land vehicle, especially the train 7, in high distance, the operation auxiliary system ensures the stability and safety of the lifting process, the matching system ensures the land vehicle to go on directly after lifting in place, the tower-bridge system adopts a balance structure, not only reduces the energy consumption of the power system, but also can simultaneously realize the descending of the high land vehicle and the ascending of the low land vehicle, namely can realize two-way passing The plateau areas of provinces such as Tibet can be connected with plateau and plain areas, so that the construction difficulty is reduced, and the overall construction cost is saved.

With respect to the tower-bridge system:

as shown in fig. 2 and 4 to 6, the bridge body 4 adopts double layers, the upper layer is a non-train layer, the lower layer is a train layer with train tracks 21, and the passing facility further comprises a road bridge 23 butted with the upper layer of the in-place bridge body 4. The non-train layer can transport non-train tools such as automobiles 14, special large-scale transport vehicles and the like, can directly continue to pass in place, and adopts the double-layer bridge body 4, so that the transportation capacity of the bridge body 4 is increased, and the width of the bridge body 4 is reduced. The invention is mainly arranged on the railway line node, and because of large construction amount and complex construction, the invention has feasibility only by large transportation amount of the railway line, and on the basis, the road line is additionally arranged, so that the transportation capacity and the traffic flexibility can be increased.

As shown in fig. 1 and 3, the upper parts of the towers 2 are stably installed through guy cables 5, and the towers 2 are fixedly connected through connecting frames 3, so that the overall stability of the tower-bridge system is improved.

As shown in fig. 3 and 7, the tower 2 is provided with an elevator 27 and a step 15. The elevator 27 and the step ladder 15 are convenient to install and maintain, and can also play a role of an emergency lifesaving channel when the bridge body 4 is in failure and emergency stop in the lifting process.

As shown in fig. 8, the rolling support 16 is covered with a protective cover 28. The protective cover 28 can prevent the small supporting wheel and the large supporting wheel from being naturally eroded by wind, sun and rain for a long time, and plays a role in protection.

Regarding the power system:

as shown in fig. 2, 4 and 5, the power system includes a transmission device and a power device, the transmission device includes a driven sprocket 17 connected with a rolling support piece 16, a driving sprocket 6 arranged on the ground at the bottom of the tower 2, and a transmission chain 18 fittingly sleeved on the driving sprocket 6 and the driven sprocket 17, the power device includes a motor 8, a speed reducer 9, a transmission case 12, an electric brake 10 and a manual brake 11 for sequentially transmitting power, the transmission case 12 is connected with a shaft of the driving sprocket, the driven sprocket 17 can drive the rolling support piece 16 to move, and a flexible force transmission piece 19 adopts a chain. The motor 8 drives the driving sprocket 6 to move after transmission and deceleration, the driving sprocket 6 drives the driven sprocket 17 to move through the transmission chain 18, the driven sprocket 17 drives the rolling support piece 16 to move, the rolling support piece 16 drives the chain to move to realize the lifting of the bridge bodies 4 on two sides, the flexible force transmission piece 19 can only be a chain in the power system, but the transmission is safer and more stable, and the safety is ensured by a double-brake mode.

As shown in fig. 4, the rolling support 16 employs a single large support wheel with the driven sprocket 17 coaxial therewith. The single large supporting wheel has good stress and supporting performance, but is troublesome to manufacture, transport and install.

As shown in fig. 8 and 9, the rolling support 16 is a wheel train composed of small support wheels, and the driven sprocket 17 is connected with the small support wheels through a gear shaft system. The wheel train formed by the small supporting wheels has poor stress and supporting performance, but is convenient to manufacture, transport and install.

As another scheme, the power system comprises a power device and a transmission device, the power device comprises a winch arranged on the ground at the bottom of the tower frame 2, the winch is provided with a manual brake and an electric brake, the transmission device comprises a transmission rope and a fixed pulley, the middle of the transmission rope is matched with the winch, two ends of the transmission rope penetrate through the fixed pulley and then are upwards connected with the bridge bodies 4 on two sides respectively, and the transmission rope is tightened on one side and loosened on the other side when the winch works. The principle of the power system is similar to that of an elevator, lifting is achieved through pulling of a transmission rope, transmission is safer and smoother than that of the power system, but the flexible force transmission piece 19 can be a chain or a steel cable, and safety is guaranteed in a double-braking mode.

Regarding the supporting system:

as shown in fig. 10, 14 and 15, the mating system further includes a docking fine-tuning device for fine-tuning the position of the docking rail 24, and the docking fine-tuning device includes a supporting plate 32, a rail beam 33, a hinge support 29, a revolving platform 30, an up-down mechanism 36, a front-back mechanism 35 and a left-right mechanism 34; the butt joint rail 24 and the sleeper 31 are installed on a supporting plate 32, the supporting plate 32 is supported on a rail beam 33 in a back-and-forth sliding mode, the bottom of the tail end of the rail beam 33 is installed on a rotary table 30 through a hinged support 29, an up-and-down mechanism 36 is located at the head end of the rail beam 33 and used for driving the head end of the rail beam 33 to swing up and down around the hinged support 29, a front-and-back mechanism 35 is used for driving the supporting plate 32 to move back and forth along the rail beam 33, and a left-and-right mechanism 34 is located in the front of the rail beam 33 and used for driving the front of the rail beam 33 and the front of the supporting plate 32 to swing left and right around the rotary table 30. Although the end of the bridge 4 can be positioned and locked by the positioning and locking device 25 after the positioning and locking device is in place, the butt joint degree of the train track 21 and the butt joint track 24 on the bridge 4 is ensured, but under the factors of assembly error, the working weight change of the bridge 4, the long-term use of the butt joint track 24 and the like, small errors still exist, the small errors are not dangerous, uncontrollable hidden dangers still exist, and therefore a butt joint fine adjustment device is additionally arranged, the butt joint fine adjustment device can realize fine adjustment of the butt joint end of the butt joint track 24 in the vertical, front and back and left and right directions, fine adjustment can be carried out regularly, fine adjustment can be carried out once after the butt joint track is used for a plurality of times, and fine adjustment can also be carried out for the next time.

As shown in fig. 10, 11 and 14, the up-down mechanism 36 employs an electric jack 37, and the electric jack 37 is located in the track beam 33, is supported on the ground at the bottom without contacting the track beam 33, and faces the track beam 33 at the top. The action of the electric jack 37 can directly drive the track beam 33 to lift, and the structure is simple, and the installation and the operation are convenient.

As shown in fig. 10, 12 and 14, the front-rear mechanism 35 includes a rack 38 fixed on the bottom of the pallet 32 and a rack driving assembly mounted on the track beam 33, a gear 41 at the transmission end of the rack driving assembly is engaged with the rack 38, and the rack driving assembly drives the pallet 32 to move through the rack 38.

As shown in fig. 2, the rack driving assembly includes a gear box 39, and an input end of the gear box 39 is connected to a hand wheel 40, and the hand wheel 40 is manually or electrically operated. The rack drive assembly employs a gear box 39, which improves torque.

As shown in fig. 10, 13 and 14, the left-right mechanism 34 includes a fixed gear 42 fixed to the track beam 33 or the pallet 32 and a reaction torque assembly mounted on the track beam 33, and a gear 43 at a transmission end of the reaction torque assembly is engaged with the fixed gear 42. Because the fixed gear 42 can not rotate, the gear 43 at the transmission end of the reactive torque component can be subjected to the action of the reverse torque when performing meshing motion, and the whole supporting plate 32 is driven to move leftwards and rightwards slightly; because the pallet 32 has only fore and aft freedom with respect to the track beam 33, the mounting of the fixed gear 42 on either the track beam 33 or the pallet 32 serves to provide reaction torque.

As shown in fig. 13, the anti-torque assembly includes a worm 47 mounted on the track beam 33, a hand wheel 48 for driving the worm 47, a worm wheel 45 mounted on the track beam 33 and engaged with the worm 47, and a gear 43 fixed with the worm wheel 45 in a shaft system, wherein the gear 43 is engaged with the fixed gear 42, and the hand wheel 48 is manually operated or electrically operated. The reaction torque assembly adopts a worm and gear structure, has a self-locking function and prevents the left and right swinging under non-driving.

As shown in fig. 13, the worm 47 is horizontal, the worm shaft is supported on the track beam 33 through the worm bearing seat 44, the worm wheel 45 is vertical, the worm wheel shaft is supported on the track beam 33 through the worm wheel bearing seat 46, and the worm 47 and the worm wheel 45 are supported well.

As shown in fig. 6, the supporting system further comprises a marshalling station 22 at a low level and a high level, the marshalling station 22 being used for weighing, counting, marshalling and sending out a weight vehicle to the lighter bridge 4 for balancing the working weight of the two bridges 4. Because the tower-bridge system adopts a balance structure, in order to ensure the balance of the bridge bodies 4 at two sides, improve safety and reduce energy consumption, the land vehicle is weighed before entering the bridge bodies 4, and then the balance weight vehicle is dispatched to the lighter bridge body 4 for balancing according to the weight difference at two sides.

A tractor for pulling the train 7 into the axle 4 may be provided in the marshalling station 22. The train 7 can enter the bridge 4 by self power, and can also enter the bridge 4 by being pulled by a tractor, and although the step of the tractor for exiting the bridge 4 is increased, the safety of entering and exiting the bridge 4 is ensured.

As shown in fig. 1, the matching system further includes a control allocation center 1 disposed at a low position and a high position, the control allocation center 1 has functions of information collection, communication and instruction assignment, and is used for controlling and allocating the task targets and actions of the staff, the land vehicles, the power systems, the matching systems and the operation auxiliary systems in the whole process of entering the bridge 4, ascending and descending the bridge 4, entering the bridge 4, moving the bridge 4 in place, moving out the bridge 4 and moving out the bridge 4. The control allocation center 1 is similar to a tower of an airport, and can improve the overall organization coordination and dispatch and ensure the passing efficiency and the passing safety.

With respect to the operation assistance system:

as shown in fig. 2 and 16 to 19, the operation assisting system further comprises a holding device 13 located near the end of the in-place rear axle body 4 for holding the end of the in-place rear axle body 4, wherein the holding device 13 comprises an extending mechanism and a jacking mechanism; the extending mechanism comprises a fixed arm 52 and a movable arm 51 which are in sliding fit, a lead screw 54 arranged on the fixed arm 52, a motor and a speed reducer 53 for driving the lead screw 54, and a nut seat 55 which is matched with the lead screw 54 and arranged on the movable arm 51; the jack mechanism includes a jack 49 provided on a movable arm 51, a motor for driving the jack 49, and a speed reducer 50. Because the bridge body 4 is very long, the end part of the bridge body 4 cannot be prevented from moving downwards under the disturbance degree by the locking device 26 and the positioning locking device 25, and the ground vehicle can also generate stress change in the process of entering and exiting the bridge body 4, so that the end part of the bridge body 4 has certain floating displacement, the supporting device 13 is additionally arranged, can be retracted in the lifting process of the bridge body 4, does not generate interference, can support the end part of the bridge body 4 after the bridge body 4 is in place, and ensures the position degree and the traffic safety of the end part of the bridge body 4 after the bridge body 4 is in place.

As shown in fig. 16 and 17, the fixing arm 52 is a sliding table, and the movable arm 51 is a sliding plate, which is simple to manufacture and convenient to install.

As another scheme, as shown in fig. 18 and 19, the fixed arm 52 and the movable arm 51 are large square boxes and small square boxes which are sleeved with each other, and the structure has good stress performance and stable support although the manufacture and installation are inconvenient.

As shown in fig. 20, the guide wheel 20 is of a floating structure, the guide wheel 20 is mounted on a bearing seat 58, the bottom of the bearing seat 58 is slidably fitted into a support cylinder 56, the support cylinder 56 is mounted on the axle 4, a screw 57 is arranged at the bottom of the bearing seat 58, a baffle 60 is arranged in the support cylinder 56, the screw 57 penetrates through the baffle 60, and a spring 59 and a nut 61 are respectively sleeved on two sides of the baffle 60, the spring 59 is pressed between the baffle 60 and the bearing seat 58, and the nut 61 is used for pre-tightening the spring 59. The floating structure of idler pulley 20 ensures both the engagement with guide rail 62 and avoids jamming.

As shown in fig. 21 and 22, the guide wheels 20 are grouped into three groups, and each group of guide wheels 20 has the same height and surrounds and fits the guide rail 62 from three sides. Guide pulley 20 distributes in the both sides of pontic 4, can prevent that pontic 4 from rocking from the left and right sides, and guide pulley 20 surrounds the cooperation with guide rail 62 from trilateral, can prevent that pontic 4 from rocking from the front and back.

As shown in fig. 21, the guide rail 62 is cylindrical, and the guide wheel 20 has a groove corresponding to the guide rail 62, so as to improve the stability.

Alternatively, as shown in fig. 22, the guide rail 62 is a square column, and the guide wheel 20 is flatly attached to the guide rail 62, so that the installation is convenient.

As shown in fig. 23, the locking device 26 includes a motor 63, a reducer 64, a jack 65, and a friction disc 66 provided at an end of the jack 65, which sequentially transmit power, and two locking devices 26 are provided in one group, each group being equal in height and being clamped to the tower 2 when locked. The locking device 26 realizes locking through friction force generated by clamping force, and has the advantages of good locking effect, simple structure and convenience in installation.

As shown in fig. 24, the locking device 26 is clamped on the guide rail 62 when locked, and the locking device 26 and the guide wheel 20 share the guide rail 62, so that the components of the tower 2 can be reduced.

As shown in fig. 7, 19 and 25, the positioning and locking device 25 includes a motor 70, a speed reducer 69, a jack 68 and a positioning head 67 disposed at an end of the jack 68, which are used for sequentially transmitting power, after the bridge 4 is in place, the supporting device 13 supports the bridge 4 in place, and the positioning and locking device 25 positions and locks two sides of the end of the bridge 4, so that the bridge 4, the tower 2 and two ends of the bridge 4 are locked into a whole, and the purpose of being stable and safe in place is achieved.

Based on the actual landform base surface, the invention can climb up to 300 meters and exceed the height of 300-3000 meters, needs to additionally arrange a multi-stage bidirectional lifting bridge, sets the maximum lifting load capacity of the train 7 to 16-20 carriages (about 2430-3240 t), has small possibility of overlarge span of the bridge body 4, has operation stability and difficult installation and maintenance besides the cost, and is recommended to be within 20 sections. The working process of the embodiment of the invention is as follows:

s1, preparation and attention before bridge erection:

the trains 7 and the cars 14 are respectively weighed and counted by respective marshalling stations 22 (electronic scales), marshalling work of the cars 14 and the number of the trains 7 is completed, in order to guarantee balance during operation of the two bridges and even redistribution of the bridge 4, each marshalling station 22 needs to allocate the transported load vehicles (weight and quantity), stable operation and consistent stress of the bridge 4 are guaranteed (the load trains on one side of the bridge 4 are designed to be less than 20 sections, 35-40 cars are designed, and the total load is designed to be less than 4840 tons), and by combining the load range difference of the two bridges, the marshalling stations 22 can allocate the number of the cars 14 or the balance weight vehicles, so that the load difference of the two bridges is not more than 5-8 tons (the balanced total load difference of the two bridges is designed to be 10 tons).

S2, procedure and attention when going up the bridge:

1) the train 7 arranged by the marshalling station 22 is driven by a tractor (or a locomotive per se) synchronously at a low speed (about 50-100 m/min, which needs to be combined with the actual climatic environment) in a bidirectional way according to a command signal to push (or drive) the train to a specified position in the two bridge bodies 4 for stopping and braking, and after the safety confirmation of a specially-assigned person, the tractor exits from the bridge bodies;

2) the weight difference of the two bridges (35-40) is less than 5-8 tons (the balanced load difference of the two bridges is 10 tons), the automobile 14 enters the bridge body 4 (the low speed is about 100-200 m/min, and the actual climate environment needs to be combined) to stop at the specified position and brake, and after the special person confirms that no error exists, a two-way passing signal can be sent.

3) After receiving the two-way traffic signal, the bridge inspector operates in steps, namely, the positioning locking devices 25 at the end part of the bridge 4 are released (the positioning locking devices 25 are distributed at two sides of two ends of the bridge 4 and share 12 positions), the supporting devices 13 below the end part of the bridge 4 are released (the supporting devices 13 are distributed at two sides of two ends of the bridge 4 and share 12 positions), the locking devices 26 are released (the locking devices 26 are distributed above and below two sides of the bridge 4 and share 32 positions and share 2 groups each position), after the special person confirms that the fault is not found, the electric brake 10 is released, the manual brake 11 is released, a starting signal is given, and after receiving the starting signal, the operator of the control and allocation center 1 is responsible for controlling the two bridges to open the running switches of the 4 motors 8 of the power system.

S3, the process and attention of the lifting of the bridge body 4:

a motor 8 of a power system is started, one bridge body 4 ascends, the other bridge body 4 descends at a constant speed, the two bridges stably run under the action of a guide device (guide wheels 20 are distributed on the upper portion and the lower portion of two sides of the bridge body 4, 32 positions of the two bridges are provided, 3 bridges are provided in each position, 16 positions of guide rails 62 of the two bridges are provided), the two bridges are started at a low speed initially, the two bridges are stable after slowly reaching a specified movement speed (the speed is not larger than 5-8 m/min), the speed is reduced before reaching the position until a limit switch is touched and stopped in place, meanwhile, the two bridges are braked through an electric brake 10 and a manual brake 11, a two-bridge positioning locking signal is given at the moment, the operation is divided into steps, a locking device 26 is started firstly to lock the two bridge bodies 4 on a tower frame 2, a supporting device 13 is started to support the end portion of the bridge body 4, and finally a positioning locking device 25 is started to complete positioning and locking of two sides of the end portion of the bridge body 4.

S4, after the bridge body 4 is in place:

the position of the butt joint rail 24 is finely adjusted through the butt joint fine adjustment device, so that the butt joint rail 24 is perfectly in butt joint with the train rail 21 on the bridge body 4, a passable signal is given after a specially-assigned person confirms that no error exists, the train 7 slowly continues to pass along the butt joint rail 24, and the automobile 14 continues to pass along the highway bridge 23.

It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.

Claims (10)

1. A bidirectional balance type lifting bridge is characterized in that: comprises a tower-bridge system, a power system, a matching system and an operation auxiliary system; the tower-bridge system comprises at least two towers, a rolling support piece arranged at the top of the towers, a flexible force transmission piece which is matched to pass around the rolling support piece and has two downward ends, and a pair of bridge bodies which are respectively and horizontally suspended at the two ends of the flexible force transmission piece, wherein the rolling support piece is a gear train consisting of small support wheels or a single large support wheel, the flexible force transmission piece is a chain or a steel cable, and a train track is laid on the bridge bodies; the power system is used for driving the two bridge bodies to alternatively lift between the low position and the high position and has a braking function; the matching system comprises passing facilities arranged at a low position and a high position, and the passing facilities comprise butt joint tracks butted with train tracks on the in-place bridge body; the operation auxiliary system comprises a guide device, a locking device and a positioning locking device, wherein the guide device comprises guide rails arranged on the tower and guide wheels arranged on two sides of the bridge body and matched with the guide rails, the guide wheels are used for preventing the bridge body from shaking, the locking device is arranged on the bridge body and used for locking the bridge body with the tower after the bridge body is in place, and the positioning locking device is positioned near the end part of the bridge body after the bridge body is in place and used for positioning and locking two sides of the end part of the bridge body.

2. The bidirectional balanced lift bridge of claim 1, wherein: the bridge body adopts double layers, the upper layer is a non-train layer, the lower layer is a train layer with train tracks, and the passing facility further comprises a highway bridge butted with the upper layer of the in-place bridge body.

3. The bidirectional balanced lift bridge of claim 1, wherein: the power system comprises a transmission device and a power device, the transmission device comprises a driven chain wheel connected with the rolling support piece, a driving chain wheel arranged on the ground at the bottom of the tower frame, and a transmission chain matched and sleeved on the driving chain wheel and the driven chain wheel, the power device comprises a motor, a speed reducer, a transmission box, an electric brake and a manual brake which sequentially transmit power, the transmission box is connected with a shaft of the driving chain wheel, the driven chain wheel can drive the rolling support piece to move, and the flexible transmission piece adopts a chain.

4. The bidirectional balanced lift bridge of claim 1, wherein: the power system comprises a power device and a transmission device, the power device comprises a winch arranged on the ground at the bottom of the tower, the winch is provided with a manual brake and an electric brake, the transmission device comprises a transmission rope and a fixed pulley, the middle part of the transmission rope is matched on the winch, two ends of the transmission rope penetrate through the fixed pulley and then are respectively connected with the bridge bodies on two sides, and the transmission rope is tightened on one side and loosened on the other side when the winch works.

5. The bidirectional balanced lift bridge of claim 1, wherein: the matching system also comprises a butt joint fine adjustment device for fine adjusting the position of the butt joint track, wherein the butt joint fine adjustment device comprises a supporting plate, a track beam, a hinged support, a rotary table, an up-down mechanism, a front-back mechanism and a left-right mechanism; the butt joint track and the sleeper are installed on the supporting plate, the supporting plate can be supported on the track beam in a front-back sliding mode, the bottom of the tail end of the track beam is installed on the rotary table through a hinged support, the up-down mechanism is located at the head end of the track beam and used for driving the head end of the track beam to swing up and down around the hinged support, the front-back mechanism is used for driving the supporting plate to move back and forth along the track beam, and the left-right mechanism is located at the front portion of the track beam and used for driving the front portion of the track beam to swing left and right around the rotary table.

6. The bidirectional balanced lift bridge of claim 5, wherein: the front and rear mechanisms comprise racks fixedly arranged at the bottoms of the supporting plates and rack driving assemblies arranged on the track beams, and gears at the transmission tail ends of the rack driving assemblies are meshed with the racks; the rack driving assembly comprises a gear transmission box, the input end of the gear transmission box is connected with a hand wheel, and the hand wheel is manual or electric.

7. The bidirectional balanced lift bridge of claim 5, wherein: the left and right mechanisms comprise fixed gears fixedly arranged on the track beam or the supporting plate and a reactive torque assembly arranged on the track beam, and gears at the transmission tail ends of the reactive torque assemblies are meshed with the fixed gears; the reaction torque assembly comprises a worm arranged on the track beam, a hand wheel for driving the worm, a worm wheel arranged on the track beam and meshed with the worm, and a gear fixed with a worm wheel shaft system, wherein the gear is meshed with a fixed gear, and the hand wheel is manual or electric.

8. The bidirectional balanced lift bridge of claim 1, wherein: the matching system also comprises marshalling stations arranged at the low position and the high position, and the marshalling stations are used for weighing, counting, marshalling and sending the weight balance vehicles to the lighter bridge bodies so as to balance the working weight of the two bridge bodies.

9. The bidirectional balanced lift bridge of claim 1, wherein: the operation auxiliary system also comprises a supporting device positioned near the end part of the in-place rear axle body and used for supporting the end part of the in-place rear axle body, and the supporting device comprises an extending mechanism and a jacking mechanism; the external extending mechanism comprises a fixed arm and a movable arm which are in sliding fit, a lead screw arranged on the fixed arm, a motor and a speed reducer for driving the lead screw, and a nut seat which is matched with the lead screw and arranged on the movable arm; the jacking mechanism comprises a jack arranged on the movable arm, a motor for driving the jack and a speed reducer.

10. The bidirectional balanced lift bridge of claim 1, wherein: the guide wheel adopts floating structure, and the guide wheel is installed on the bearing frame, and bearing frame bottom sliding fit is in the supporting cylinder, and the supporting cylinder is installed on the pontic, and the bearing frame bottom is equipped with the screw rod, is equipped with the baffle in the supporting cylinder, and the screw rod passes the baffle and overlaps respectively in baffle both sides has spring and nut, and the spring is pressed between baffle and bearing frame, and the nut is used for pretension spring.

Images