A crushable ice lifting high trestle bridge for river crossing operations during the ice flood period

Abstract

The present invention is a crushable ice lifting elevated pontoon bridge for river crossing operations during the ice run period, comprising: a lifting device, an ice crushing device, an ice discharging device, pontoon feet, and a trestle bridge. The lifting device is arranged in the middle of the pontoon feet and hydraulically controls the overall lifting of the connected trestle bridge into the air; the ice crushing device is installed at the front of the pontoon feet through a truss, immersed underwater, and achieves the ice crushing effect through rapid rotation; the ice discharging device is arranged under the trusses on both sides of the trestle bridge and drives the ice discharging shaft to rotate through an electric motor-driven chain drive. The present invention is applicable to rivers with an ice run period, can reduce the impact of ice floes on the pontoon feet, improve the stability of the overall pontoon bridge, effectively prevent ice floes from accumulating under the trestle bridge, and provide safety guarantees for transportation.

Description

Technical Field

[0001] The present invention belongs to the technical field of pontoon bridge equipment, and specifically relates to a crushable ice lifting high - altitude pontoon bridge for river - crossing operations during the ice - run period. Background Art

[0002] In the alternating season of spring and winter, northern rivers enter the ice - run period comprehensively. Ice - runs mainly occur in the upper reaches of the Yellow River in Ningxia and Inner Mongolia, the Erguna River, a tributary of the Heilongjiang River, and the Songhua River Basin. Among them, the ice - run in the Inner Mongolia section of the Yellow River causes the most serious disasters. Due to the freezing of the river section or the accumulation of ice floes to form an ice dam blocking the river channel, the river channel becomes unsmooth and the river water gradually rises, resulting in the pontoon bridge being washed away and damaged.

[0003] Therefore, before the arrival of the ice - run period, the pontoon bridges and construction buildings on the river surface will be removed in time to ensure the safety of the ice - run in rivers. And the upper reaches of the Yellow River Basin are rich in natural resources, with water, minerals, natural gas, and oil resources ranking among the top in the country. Transportation mainly relies on road transportation and railway transportation. The temporary removal of pontoon bridges will cause a shortage of energy supply in winter. Summary of the Invention

[0004] Aiming at the problem that the transportation of pontoon bridges in the ice - run period of northern rivers is restricted by the above - mentioned existing technologies, the present invention provides a crushable ice lifting high - altitude pontoon bridge for river - crossing operations during the ice - run period. This crushable ice lifting high - altitude pontoon bridge enables the pontoon bridge to continue to be used during the ice - run period, alleviating the tension in transportation.

[0005] To solve the above problems, the present invention is realized through the following technical solutions:

[0006] The present invention is a crushable ice lifting high - altitude pontoon bridge for river - crossing operations during the ice - run period, including a lifting device, a crushable ice device, an ice - discharging device, pontoon feet, and a trestle. The lifting device is arranged in the middle of the pontoon feet and hydraulically controls the overall lifting of the connected trestle into the air. The crushable ice device is installed at the front of the pontoon feet through a truss and is immersed underwater, achieving the effect of crushing ice through rapid rotation; the ice - discharging device is arranged under the trusses on both sides of the trestle and drives the ice - discharging shaft to rotate through a motor - driven chain transmission mechanism.

[0007] A further improvement of the present invention lies in that: the lifting device includes a lifting fixed bracket and a hydraulic lifting component. The lifting fixed bracket is arranged on both sides of the trestle in the middle of the pontoon feet and is used to support the up - and - down operation of the hydraulic lifting component. Both ends of the hydraulic lifting component are arranged on the lifting fixed bracket and are used to lift the entire trestle into the air.

[0008] A further improvement of the present invention lies in that: the lifting and fixing bracket includes a long cross beam, a main support column, a secondary support column, an angle steel, and a support rod. The long cross beam is a square long tube with two symmetric fixing plates in the middle for installing the support rod. The main support column is composed of two square long tubes, two square short tubes, and a triangular plate. There is a spacing between the two square long tubes. The square short tubes are respectively aligned and arranged at the upper and lower ends of the square long tubes. The triangular plate is arranged at the outer right angle where the square long tube is connected to the square short tube. The secondary support column is composed of two square long tubes, two square short tubes, a triangular plate, and a fixing plate. There is a spacing between the two square long tubes. The square short tubes are respectively aligned and arranged at the upper and lower ends of the square long tubes. The triangular plate is arranged at the outer right angle where the square long tube is connected to the square short tube. The fixing plate is arranged at the middle position on the side of the square long tube. The two ends of the square short tubes of the main support column are aligned and arranged at the two ends of the long cross beam. The secondary support column is arranged at both ends of the long cross beam. The end face of the square short tube is aligned with the side face of the long cross beam and is at a fixed distance from the main support column at the same time. The angle steel is composed of an unequal-leg right-angle steel plate and is arranged at both ends and at equidistant positions in the middle of the long cross beam above the fixing bracket. The long side face is fitted and aligned with the long cross beam. The support rod is an inclined rod with parallel double-ear structures at both ends. One end is arranged on the fixing plate of the long cross beam, and the other end is arranged on the fixing plate of the secondary support column for stabilizing the secondary support column and the long cross beam.

[0009] A further improvement of the present invention lies in that: the hydraulic lifting assembly includes a lifting beam, a load-bearing beam, a lower fixing seat, a hydraulic cylinder, and an upper fixing seat. There are pin holes at both ends of the lifting beam. The middle section is an I-beam. The two ends are arranged in the spacing of the square long tubes of the main support column and can slide up and down for lifting the load-bearing beam. The load-bearing beam is an H-shaped I-beam with several equidistant reinforcing plates arranged in the steel groove. Both ends of the load-bearing beam are fixed to both ends of the middle section of the lifting beam and are arranged between the main support column and the secondary support column at the same time for bearing the weight of the trestle. The lower fixing seat is composed of a large square bottom plate and a double-ear seat. There are several mounting holes on both sides of the square bottom plate. The edge of the square bottom plate is aligned with the side of the lifting beam. The double-ear seat faces upward and is fixed in the middle of the two lifting beams at the bottom of the fixing bracket at the same time. The upper fixing seat is composed of a small square bottom plate and a double-ear seat. The double-ear seat faces downward and is arranged at the middle position between two adjacent long cross beams above the fixing bracket. The fixed end of the hydraulic cylinder is assembled in the double-ear seat of the lower fixing seat, and the telescopic end is assembled in the double-ear seat of the upper fixing seat for pulling the lifting beam to move up and down, thereby realizing the overall rise of the trestle.

[0010] A further improvement of the present invention lies in that the ice crushing device includes a truss fixing seat, an extension truss, a connecting frame, an ice crusher hanging truss, and an ice crusher. The truss fixing seat can achieve truss docking in four directions, and the bottom anchor feet are fixed on the bridge foot boat. One end of the extension truss is connected through the form of positive butt joint of the inner lining pipe, and the other end of the extension truss extends out from the bow of the ship and is connected to the connecting frame through the form of positive butt joint of the inner lining pipe. The connecting frame can achieve positive butt joint of the truss inner lining pipes in three directions. An ice crusher hanging truss is arranged between two connecting frames, and the ice crusher hanging truss is used to equidistantly hang and install a number of ice crushers. The rotation of the ice crusher drives the blades to cut the ice floes into fine ice, avoiding the accumulation of floating ice.

[0011] Further, the truss fixing seat includes a mounting plate, a reinforcing rib, a foot post, a mounting hole, a connecting pipe, a secondary branch pipe, a main branch pipe, and a pin hole. The center of the mounting plate is arranged at the bottom end of the foot post and is used for fixing on the bridge foot boat. The reinforcing rib is arranged at the quadrant points of the connection between the foot post and the mounting plate to increase the connection strength. The foot post is a thick-diameter round pipe. The mounting holes are arranged at the four right angles of the mounting plate and are used for fixing the truss fixing seat. The connecting pipe is at the bottom of the foot post and horizontally connects two adjacent foot posts to form a square frame. The secondary branch pipe is obliquely arranged between the front and rear two foot posts. The main branch pipe is arranged in the middle and upper parts of the foot post and penetrates through the foot post to connect two adjacent foot posts to form a rectangular frame. The pin holes are horizontally and penetratingly arranged at both ends of the main branch pipe and are used for the positioning and installation of the truss.

[0012] A further improvement of the present invention lies in that: the ice crusher includes a housing, an extension plate, an ice crushing mounting plate, a motor, a sealing plate, a cutting head, a hoop seat, a hoop cover, and a hoop pin. The housing is overall streamlined, with an end face at the head, and horizontal mounting seats are provided inside up and down for positioning and mounting the motor. The cross-section of the extension plate is streamlined, with a vertical line hole in the center. The extension plate is connected to the housing and the ice crushing mounting plate up and down. The ice crushing mounting plate is overall diamond-shaped, with a number of symmetrically arranged mounting holes at the front and rear ends for mounting the hoop seat. The upper and lower surfaces of the motor body are horizontal planes, with mounting holes on the end plate, and threads are provided at the end of the motor shaft. The sealing plate is circular, with a shaft hole in the middle, and a number of mounting holes are provided at the edge for positioning and mounting with the motor end plate to prevent water from entering the housing. The cutting head is conical, with a number of cutting blades arranged on the conical surface, and is connected to the end of the motor shaft by reverse threads. The hoop seat is composed of a mounting base plate, a suspension column, an arc-shaped hoop, and a rib plate. The mounting base plate is provided at the bottom end of the suspension column, and a number of mounting holes are provided on the mounting base plate for positioning and mounting with the mounting holes on the ice crushing mounting plate. The top end of the suspension column is connected to the outside of the arc-shaped hoop, and a pair of rib plates are provided at the longitudinal connection. The inner wall of the arc-shaped hoop is semi-circular, with a single-ear connection block on the left and a connection plate on the right. The inner wall of the hoop cover is semi-circular, with a double-ear connection block on the left for aligning and fitting with the single-ear connection block of the arc-shaped hoop on the hoop seat, and a connection plate on the right for aligning and fixing with the arc-shaped hoop, so that the ice crusher is suspended and fixed on the branch pipe of the truss. The hoop pin is used to connect the hoop seat and the hoop cover, and the hoop cover can rotate around the axis of the hoop pin.

[0013] A further improvement of the present invention lies in that: the ice discharging device includes a chain drive device, an ice discharging shaft, ice discharging paddles, paddle seats, paddle pins, rotating shaft mounting arms, a hoop assembly, and shaft end fixing nuts. The chain drive device is fixedly assembled at the left end of the ice discharging shaft through the shaft end fixing nuts to drive the ice discharging shaft to rotate. Threads are provided at both ends of the ice discharging shaft, and a number of paddle seats are fixedly arranged at fixed distances and angles on the shaft. The paddle seats are cylinders perpendicular to the ice discharging shaft, with a rectangular clamping groove in the middle, and two pin holes are provided on the column surface corresponding to the clamping groove. A number of rib strips are provided on the back of the ice discharging paddles to increase toughness, and the front is a concave surface, and the purpose of ice discharging and dredging is achieved by the rotation of the ice discharging shaft. The paddle pins are assembled in the pin holes of the paddle seats to fix the ice discharging paddles. The rotating shaft mounting arms are installed at both ends of the ice discharging shaft to suspend and install the ice discharging shaft under the truss. The hoop assembly is used to fixedly install the chain drive device and the rotating shaft mounting arms.

[0014] A further improvement of the present invention lies in that: the chain drive device includes side plates, an input shaft bearing, an input shaft sleeve, a flange, a three-phase motor, an output shaft bearing, an output shaft sleeve, end covers, a large sprocket, a small sprocket, a chain, a shaft end baffle, and an output shaft flat key. The side plates are fan-shaped, each provided with a shaft hole at the upper and lower parts, a fixing plate is provided at the top, and a strip-shaped baffle is provided on the right side. The input shaft bearing is assembled in the upper shaft hole of the side plate. The input shaft sleeve is assembled in the upper shaft hole of the side plate to fix the outer ring of the bearing to prevent axial movement. The flange is assembled at the orifice of the upper shaft hole for installing the three-phase motor. A flat key is provided on the shaft of the three-phase motor to drive the large sprocket to rotate. A pair of screw holes are provided at the end face of the motor shaft for installing the shaft end baffle. The shaft end baffle is a circular plate with a mounting hole in the center to limit the axial movement of the large sprocket. The output shaft bearing is assembled in the lower shaft hole of the side plate. The output shaft sleeve is arranged in the lower shaft hole to prevent axial movement of the bearing. The output shaft end cover is arranged at the orifice of the lower shaft hole of the side plate. The large sprocket is arranged inside above the side plate aligned with the upper shaft hole. The small sprocket is arranged inside below the side plate aligned with the lower shaft hole. The chain is used for the large sprocket to drive the small sprocket to rotate. The output shaft flat key is arranged in the keyway of the small sprocket to drive the ice discharging shaft to rotate by the small sprocket.

[0015] A further improvement of the present invention lies in that: the rotating shaft mounting arm includes a cantilever, a fixing ring, an ice discharging shaft bearing, fixing bolts, fixing nuts, and a cantilever fixing plate. The top of the cantilever is provided with a cantilever fixing plate, and the bottom is provided with a fixing ring. An annular groove is provided inside the fixing ring for installing a bearing. Symmetric mounting plates are provided on both sides. The fixing ring is semi-circular, with a semi-shaft hole in the middle, symmetric mounting plates on both sides, and an annular groove is provided inside for installing the ice discharging shaft bearing. The fixing bolts and fixing nuts are used to install the fixing ring at the bottom of the cantilever. The cantilever fixing plate is a rectangular plate with a number of mounting holes at both ends for installing the hoop assembly.

[0016] The beneficial effects of the present invention are as follows: The present invention can continue to be used during the ice flood season without disassembly. The pontoon bridge is lifted into the air by the lifting device, and at the same time, the ice crushing device cuts the ice into fine ice, and then the ice discharging device effectively avoids the accumulation of ice floes and blocks the river channel, prevents the pontoon bridge from being washed away by the ice dam, extends the service life of the pontoon bridge, relieves the transportation pressure, and has good market demand and economic benefits.

[0017] The present invention is applicable to inland rivers with ice flood seasons, can reduce the impact of ice floes on the bridge foot pontoons, improve the stability of the overall pontoon bridge, effectively prevent ice floes from accumulating under the trestle bridge, and provide safety guarantee for transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention.

[0019] Figure 2Schematic diagram of the lifting device according to the present invention.

[0020] Figure 3 Schematic diagram of the lifting and fixing bracket according to the present invention.

[0021] Figure 4 Exploded view of the lifting and fixing bracket according to the present invention.

[0022] Figure 5 Schematic diagram of the hydraulic lifting assembly according to the present invention.

[0023] Figure 6 Schematic diagram of the ice crushing device according to the present invention.

[0024] Figure 7 Schematic diagram of the truss fixing seat according to the present invention.

[0025] Figure 8 Exploded view of the ice crusher according to the present invention.

[0026] Figure 9 Schematic diagram of the ice discharging device according to the present invention.

[0027] Figure 10 Exploded view of the chain drive device according to the present invention.

[0028] Figure 11 Exploded view of the rotating shaft mounting arm according to the present invention.

[0029] Wherein: 1: Lifting device, 1-1: Lifting fixed bracket, 1-1-1: Long cross beam, 1-1-2: Main support column, 1-1-3: Sub-support column, 1-1-4: Angle steel, 1-1-5: Support rod, 1-2: Hydraulic lifting assembly, 1-2-1: Lifting beam, 1-2-2: Load-bearing beam, 1-2-3: Lower fixed seat, 1-2-4: Hydraulic cylinder, 1-2-5: Upper fixed seat, 2: Ice-breaking device, 2-1: Truss fixed seat, 2-1-1: Mounting plate, 2-1-2: Reinforcing rib, 2-1-3: Foot column, 2-1-4: Mounting hole, 2-1-5: Connecting pipe, 2-1-6: Sub-branch pipe, 2-1-7: Main branch pipe, 2-1-8: Pin hole, 2-2: Extended truss, 2-3: Connecting frame, 2-4: Ice breaker suspension truss, 2-5: Ice breaker, 2-5-1: Housing, 2-5-2: Extension plate, 2-5-3: Ice-breaking mounting plate, 2-5-4: Motor, 2-5-5: Sealing plate, 2-5-6: Cutting head, 2-5-7: Hoop seat, 2-5-8: Hoop cover, 2-5-9: Hoop pin, 3: Ice discharging device, 3-1: Chain drive device, 3-1-1: Side plate, 3-1-2: Input shaft bearing, 3-1-3: Input shaft bushing, 3-1-4: Flange, 3-1-5: Three-phase motor, 3-1-6: Output shaft bearing, 3-1-7: Output shaft bushing, 3-1-8: End cover, 3-1-9: Large sprocket, 3-1-10: Small sprocket, 3-1-11: Chain, 3-1-12: Shaft end baffle, 3-1-13: Output shaft flat key, 3-2: Ice discharging shaft, 3-3: Ice discharging paddle, 3-4: Paddle seat, 3-5: Paddle pin, 3-6: Rotating shaft mounting arm, 3-6-1: Cantilever, 3-6-2: Fixed ring, 3-6-3: Ice discharging shaft bearing, 3-6-4: Fixed bolt, 3-6-5: Fixed nut, 3-6-6: Cantilever fixing plate, 3-7: Hoop assembly, 3-8: Shaft end fixing nut, 4: Bridge foot boat, 5: Trestle bridge. Detailed implementation manners

[0030] The following will disclose the implementation manners of the present invention with diagrams. For the sake of clear illustration, many practical details will be described together in the following narrative. However, it should be understood that these practical details are not used to limit the present invention. That is to say, in some implementation manners of the present invention, these practical details are not necessary. In addition, for the sake of simplifying the diagrams, some conventional structures and components will be shown in a simple schematic manner in the diagrams.

[0031] The present invention is a breakable ice lifting high - altitude pontoon bridge for river crossing operations during the ice flood season, which can be used for solving the problems that the erection of pontoon bridges is restricted and cross - river traffic is blocked during the ice flood season in northern rivers. The structure of the invention is as Figure 1As shown in the figure, a crushable ice lifting elevated pontoon bridge for river crossing during the ice flood season mainly includes a lifting device 1, an ice crushing device 2, an ice discharging device 3, a bridge pier pontoon 4, and a trestle 5. The lifting device 1 is arranged in the middle of the bridge pier pontoon 4 and hydraulically controls to lift the connected trestle 5 as a whole into the air. The ice crushing device 2 is installed at the front of the bridge pier pontoon 4 through a truss, immersed underwater, and achieves the ice crushing effect through rapid rotation. The ice discharging device 3 is arranged under the trusses on both sides of the trestle 5 and drives the ice discharging shaft to rotate through a motor-driven chain transmission mechanism. The present invention is applicable to inland rivers with ice flood seasons, can reduce the impact of ice floes on the bridge pier pontoon 4, improve the stability of the overall pontoon bridge, effectively prevent ice floes from accumulating under the trestle, and provide safety guarantees for transportation.

[0032] As Figure 2 shown, the lifting device 1 includes a lifting fixed bracket 1-1 and a hydraulic lifting assembly 1-2. The lifting fixed bracket 1-1 is arranged on both sides of the trestle 5 in the middle of the bridge pier pontoon 4 and is used to support the up-and-down operation of the hydraulic lifting assembly 1-2. The two ends of the hydraulic lifting assembly 1-2 are arranged on the lifting fixed bracket 1-1 and are used to lift the trestle 5 as a whole into the air.

[0033] As Figures 3-4 shown, the lifting fixed bracket 1-1 includes a long cross beam 1-1-1. The long cross beam 1-1-1 is a square long tube with two symmetric fixing plates in the middle for installing the support rod 1-1-5. The main pillar 1-1-2 is composed of two square long tubes, two square short tubes, and triangular plates. There is a spacing between the two square long tubes. The square short tubes are respectively aligned and arranged at the upper and lower ends of the square long tubes. The triangular plates are arranged at the outer right angles where the square long tubes are connected to the square short tubes. The auxiliary pillar 1-1-3 is composed of two square long tubes, two square short tubes, triangular plates, and fixing plates. There is a spacing between the two square long tubes. The square short tubes are respectively aligned and arranged at the upper and lower ends of the square long tubes. The triangular plates are arranged at the outer right angles where the square long tubes are connected to the square short tubes. The fixing plates are arranged at the middle positions on the side surfaces of the square long tubes. The square short tube ends of the main pillar 1-1-2 are aligned and arranged at both ends of the long cross beam 1-1-1. The auxiliary pillar 1-1-3 is arranged at both ends of the long cross beam 1-1-1. The end faces of the square short tubes are aligned with the side surfaces of the long cross beam 1-1-1 and are set at a fixed distance from the main pillar 1-1-2. The angle steel 1-1-4 is composed of an unequal-angled right-angled steel plate and is arranged at both ends and equidistant positions in the middle of the long cross beam above the fixed bracket 1-1. The long side surfaces are fitted and aligned with the long cross beam 1-1-1. The support rod 1-1-5 is an inclined rod with parallel double-ear structures at both ends. One end is arranged on the fixing plate of the long cross beam 1-1-1, and the other end is arranged on the fixing plate of the auxiliary pillar 1-1-3 for stabilizing the auxiliary pillar 1-1-3 and the long cross beam 1-1-1.

[0034] As Figure 5As shown in the figure, the hydraulic lifting assembly 1-2 includes a lifting beam 1-2-1, a load-bearing beam 1-2-2, a lower fixing seat 1-2-3, a hydraulic cylinder 1-2-4, and an upper fixing seat 1-2-5. Pin holes are provided at both ends of the lifting beam 1-2-1. The middle section is an I-beam. The two ends are arranged in the spacing of the square long tubes of the main strut 1-1-2 and can slide up and down, and are used to lift the load-bearing beam 1-2-1. The load-bearing beam 1-2-2 is an H-shaped I-beam, and several equally spaced reinforcing plates are arranged in the steel groove. The two ends of the load-bearing beam 1-2-2 are fixed to the two ends of the middle section of the lifting beam 1-2-1 and are arranged between the main strut 1-1-2 and the auxiliary strut 1-1-3 at the same time, and are used to bear the weight of the trestle. The lower fixing seat 1-2-3 is composed of a large square bottom plate and double ear seats. Several mounting holes are provided on both sides of the square bottom plate. The edge of the square bottom plate is aligned with the side of the lifting beam 1-2-1. The double ear seats face upward and are fixed in the middle of the two lifting beams 1-2-1 at the bottom of the fixed bracket 1-1 at the same time. The upper fixing seat 1-2-5 is composed of a small square bottom plate and double ear seats. The double ear seats face downward and are arranged at the middle position between the two adjacent long cross beams 1-1-1 above the fixed bracket 1-1. The fixed end of the hydraulic cylinder 1-2-4 is assembled in the double ear seats of the lower fixing seat 1-2-3, and the telescopic end is assembled in the double ear seats of the upper fixing seat 1-2-5, and is used to lift the lifting beam 1-2-1 to move up and down, so as to realize the overall rise of the trestle 5.

[0035] As Figure 6 shown in the figure, the ice crushing device 2 includes a truss fixing seat 2-1, an extension truss 2-2, a connecting frame 2-3, an ice crusher suspension truss 2-4, and an ice crusher 2-5. The truss fixing seat 2-1 shown can realize the docking of trusses in four directions. The anchor feet at the bottom are fixed on the bridge foot boat, and one end of the extension truss 2-2 is connected through the form of direct butt joint of the inner lining pipe. The other end of the extension truss 2-2 extends out from the bow and is connected to the connecting frame 2-3 through the form of direct butt joint of the inner lining pipe. The connecting frame 2-3 can realize the direct butt joint of the inner lining pipes of the trusses in three directions. An ice crusher suspension truss 2-4 is arranged between the two connecting frames 2-3. The ice crusher suspension truss 2-4 is used to hang and install several ice crushers 2-5 at equal intervals. The rotation of the ice crusher 2-5 drives the blades to cut the ice floes into fine ice, avoiding the accumulation of floating ice.

[0036] As Figure 7As shown, the truss fixing base 2-1 includes a mounting plate 2-1-1, a reinforcing rib 2-1-2, a foot post 2-1-3, a mounting hole 2-1-4, a connecting pipe 2-1-5, a secondary branch pipe 2-1-6, a main branch pipe 2-1-7, and a pin hole 2-1-8. The center of the mounting plate 2-1-1 is set at the bottom end of the foot post 2-1-3 for fixing on the bridge foot boat. The reinforcing rib 2-1-2 is set at the quadrant points of the connection between the foot post 2-1-3 and the mounting plate 2-1-1 to increase the connection strength. The foot post 2-1-3 is a thick-diameter circular pipe. The mounting holes 2-1-4 are set at the four right angles of the mounting plate 2-1-1 for fixing the shown truss fixing base 2-1. The connecting pipe 2-1-5 is at the bottom of the foot post 2-1-3, horizontally connecting two adjacent foot posts 2-1-3 to form a square frame. The secondary branch pipe 2-1-6 is obliquely arranged between the front and rear foot posts 2-1-3. The main branch pipe 2-1-7 is set in the middle and upper parts of the foot post 2-1-3, passing through the foot post 2-1-3, and connecting two adjacent foot posts 2-1-3 to form a rectangular frame. The pin holes 2-1-8 are horizontally and penetratingly set at both ends of the main branch pipe 2-1-7 for the positioning and installation of the truss.

[0037] As Figure 8Exploded view of the ice crusher 2-5 shown. The ice crusher 2-5 includes a housing 2-5-1, an extension plate 2-5-2, an ice crushing mounting plate 2-5-3, a motor 2-5-4, a sealing plate 2-5-5, a cutting head 2-5-6, a hoop seat 2-5-7, a hoop cover 2-5-8, and a hoop pin 2-5-9. The housing 2-5-1 is streamlined as a whole, with an end face at the head, and horizontal mounting seats are provided inside, top and bottom, for positioning and installing the motor. The extension plate 2-5-2 has a streamlined cross-section and a vertical wire hole in the center. The extension plate 2-5-2 connects the housing 2-5-1 and the ice crushing mounting plate 2-5-3, top and bottom. The ice crushing mounting plate 2-5-3 is diamond-shaped as a whole, with a number of symmetrically arranged mounting holes at the front and rear ends for installing the hoop seat 2-5-7. The body of the motor 2-5-4 has horizontal planes at the top and bottom, with mounting holes on the end plate, and a thread at the end of the motor shaft. The sealing plate 2-5-5 is circular, with a shaft hole in the middle and a number of mounting holes at the edge for positioning and installing with the motor end plate to prevent water from entering the housing. The cutting head 2-5-6 is conical, with a number of cutting blades arranged on the conical surface, and is connected to the end of the shaft of the motor 2-5-4 by a reverse thread. The hoop seat 2-5-7 consists of a mounting base plate, a suspension column, an arc-shaped hoop, and a rib plate. The bottom end of the suspension column is provided with a mounting base plate, and a number of mounting holes are provided on the mounting base plate for positioning and installing with the mounting holes on the ice crushing mounting plate 2-5-3. The top end of the suspension column is connected to the outside of the arc-shaped hoop, and a pair of rib plates are provided at the longitudinal connection. The inner wall of the arc-shaped hoop is semi-circular, with a single-ear connection block on the left and a connection plate on the right. The inner wall of the hoop cover 2-5-8 is semi-circular, with a double-ear connection block on the left for aligning and fitting with the single-ear connection block of the arc-shaped hoop on the hoop seat 2-5-7, and a connection plate on the right for aligning and fixing with the arc-shaped hoop, so that the ice crusher is suspended and fixed on the branch pipe of the truss. The hoop pin 2-5-9 is used to connect the hoop seat 2-5-7 and the hoop cover 2-5-8, and the hoop cover can rotate around the axis of the hoop pin 2-5-9.

[0038] Such as Figure 9As shown in the figure, the ice discharging device 3 includes a chain drive device 3-1, an ice discharging shaft 3-2, ice discharging paddles 3-3, paddle seats 3-4, paddle pins 3-5, a rotating shaft mounting arm 3-6, a hoop assembly 3-7, and a shaft end fixing nut 3-8. The chain drive device 3-1 is fixedly assembled at the left end of the ice discharging shaft 3-2 through the shaft end fixing nut 3-8 and is used to drive the ice discharging shaft 3-2 to rotate. Threads are provided at both ends of the ice discharging shaft 3-2, and a number of paddle seats 3-4 are fixed at regular intervals and angles on the shaft. The paddle seats 3-4 are cylinders perpendicular to the ice discharging shaft 3-2, with a rectangular clamping groove in the middle, and two pin holes are provided on the corresponding cylindrical surface of the clamping groove. Two adjacent ice discharging paddles 3-3 are arranged at 90 degrees. A number of ribs are provided on the back of the ice discharging paddle 3-3 to increase toughness, and the front surface is concave. The purpose of ice discharging and dredging is achieved by the rotation of the ice discharging shaft. The paddle pin 3-5 is assembled in the pin hole of the paddle seat 3-4 to fix the ice discharging paddle 3-3. The rotating shaft mounting arm 3-6 is installed at both ends of the ice discharging shaft 3-2 and is used to suspend and install the ice discharging shaft 3-2 under the truss. The hoop assembly 3-7 is used to fixedly install the chain drive device 3-1 and the rotating shaft mounting arm 3-6.

[0039] As Figure 10As shown in the exploded view, the chain drive 3-1 includes side plates 3-1-1, input shaft bearings 3-1-2, input shaft sleeves 3-1-3, flange plates 3-1-4, three-phase motors 3-1-5, output shaft bearings 3-1-6, output shaft sleeves 3-1-7, end covers 3-1-8, large sprockets 3-1-9, small sprockets 3-1-10, chains 3-1-11, shaft end baffles 3-1-12, and output shaft flat keys 3-1-13. The side plates 3-1-1 are fan-shaped, with a shaft hole provided at each of the upper and lower parts, a fixing plate provided at the top, and a strip-shaped baffle provided on the right side. The input shaft bearings 3-1-2 are assembled in the upper shaft hole of the side plate 3-1-1, and the input shaft sleeves 3-1-3 are assembled in the upper shaft hole of the side plate 3-1-1 to fix the outer ring of the bearing to prevent axial movement. The shown flange plates 3-1-4 are assembled at the upper shaft hole opening for installing the three-phase motor 3-1-5. A flat key is provided on the shaft of the three-phase motor 3-1-5 to drive the large sprocket 3-1-9 to rotate. A pair of screw holes are provided at the end face of the motor shaft for installing the shaft end baffle 3-1-12. The shaft end baffle 3-1-12 is a circular plate with an installation hole provided at the center to limit the axial movement of the large sprocket 3-1-9. The output shaft bearings 3-1-6 are assembled in the lower shaft hole of the side plate 3-1-1, and the output shaft sleeves 3-1-7 are provided in the lower shaft hole to prevent the bearing from generating axial movement. The output shaft end cover 3-1-8 is provided at the lower shaft hole opening of the side plate 3-1. The large sprocket 3-1-9 is aligned with the upper shaft hole and arranged inside above the side plate 3-1, and the small sprocket 3-1-10 is aligned with the lower shaft hole and arranged inside below the side plate 3-1. The chain 3-11 is used for the large sprocket 3-1-9 to drive the small sprocket 3-1-10 to rotate. The output shaft flat key 3-1-13 is provided in the keyway of the small sprocket 3-1-13 to drive the shown ice discharging shaft 3-2 to rotate.

[0040] As Figure 11 As shown in the exploded view, the rotating shaft mounting arm 3-6 includes a cantilever 3-6-1, a fixing ring 3-6-2, an ice discharging shaft bearing 3-6-3, fixing bolts 3-6-4, fixing nuts 3-6-5, and a cantilever fixing plate 3-6-6. The top of the cantilever 3-6-1 is provided with a cantilever fixing plate 3-6-6, and the bottom is provided with a fixing ring. An annular groove is provided inside the fixing ring for installing a bearing. Symmetric mounting plates are provided on both sides. The fixing ring 3-6-2 is semi-circular, with a semi-shaft hole provided in the middle, symmetric mounting plates provided on both sides, and an annular groove provided inside for installing the ice discharging shaft bearing 3-6-3. The fixing bolts 3-6-4 and the fixing nuts 3-6-5 are used to install the fixing ring 3-6-2 at the bottom of the cantilever 3-6-1. The cantilever fixing plate 3-6-6 is a rectangular plate, with a number of installation holes provided at both ends for installing the hoop assembly 3-7.

[0041] The working process of the present invention is as follows: During the ice flood season, when the pontoon bridge of the present invention needs to be lifted as a whole, the lifting device provided on the bridge-foot pontoon lifts the trestle as a whole into the air through the hydraulic lifting assembly, and the fixing bracket plays a role in stabilizing the trestle. In order to prevent floating ice from accumulating and damaging the bridge-foot pontoon, several ice crushers are arranged on the connecting frame at the front end of the bridge-foot pontoon, and the ice cutter head is driven by a motor to rotate to cut the ice floes into fine ice, so as to protect the bridge-foot pontoon from the impact of floating ice. Further, the ice discharging devices arranged on both sides of the trestle drive the ice discharging shaft to rotate through chain drive, and several ice discharging paddles are arranged on the ice discharging shaft. The fine ice cut by the ice crusher reaches the purpose of ice discharging and dredging through the rotation of the ice discharging paddles arranged on the ice discharging shaft.

[0042] The present invention is applicable to inland rivers with ice flood seasons, can reduce the impact of ice floes on the bridge-foot pontoons, improve the stability of the overall pontoon bridge, effectively prevent ice floes from accumulating under the trestle, and provide safety guarantee for transportation.

Claims

1. A crushable ice lifting high - elevation pontoon bridge for river crossing during the ice flood period, comprising bridge - foot pontoons (4) and trestle bridges (5), characterized in that: The crushable ice lifting high trestle bridge further includes a lifting device (1), a crush ice device (2), and an ice discharging device (3). The lifting device (1) is arranged in the middle of the bridge foot boat (4), and the connected trestle bridge (5) is integrally lifted into the air by controlling the hydraulic lifting assembly (1-2) in the lifting device (1). The crush ice device (2) is installed on the front part of the bridge foot boat (4) through a truss and is immersed underwater. The ice discharging device (3) is arranged under the trusses on both sides of the trestle bridge (5).

2. The breakable ice lifting high - altitude pontoon bridge for river crossing operation during the ice flood period according to claim 1, wherein: The lifting device (1) includes a lifting fixed bracket (1-1) and a hydraulic lifting assembly (1-2). The lifting fixed bracket (1-1) is arranged on both sides of the trestle bridge (5) in the middle of the bridge foot boat (4). The two ends of the hydraulic lifting assembly (1-2) are arranged on the lifting fixed bracket (1-1) to integrally lift the trestle bridge (5) into the air.

3. The collapsible ice-breaking liftable high trestle pontoon bridge for river crossing operation during ice flood period according to claim 2, wherein: The lifting fixed bracket (1-1) includes a long cross beam (1-1-1), main struts (1-1-2), auxiliary struts (1-1-3), angle steels (1-1-4), and support rods (1-1-5). There are two symmetrical fixing plates for installing the support rods (1-1-5) in the middle of the long cross beam (1-1-1). The main struts (1-1-2) and the auxiliary struts (1-1-3) are arranged between the long cross beams (1-1-1). The main strut (1-1-2) is composed of two square long pipes, two square short pipes, and triangular plates. The two ends of the main strut (1-1-2) are aligned and arranged at the two ends of the long cross beam (1-1-1). The auxiliary strut (1-1-3) is arranged inside the main strut (1-1-2) and has a spacing from the main strut (1-1-2). The angle steels (1-1-4) are arranged at both ends and equidistant positions in the middle of the long cross beam (1-1-1). The support rod (1-1-5) is an inclined rod with parallel double-ear structures at both ends. One end of the support rod (1-1-5) is arranged on the fixing plate of the long cross beam (1-1-1), and the other end of the support rod (1-1-5) is arranged on the fixing plate of the auxiliary strut (1-1-3) to stabilize the auxiliary strut (1-1-3) and the long cross beam (1-1-1).

4. The collapsible ice-breaking lifting high trestle bridge for river crossing operation during the ice flood period according to claim 3, characterized in that: The hydraulic lifting assembly (1-2) includes a lifting beam (1-2-1), a load-bearing beam (1-2-2), a lower fixed seat (1-2-3), a hydraulic cylinder (1-2-4), and an upper fixed seat (1-2-5). Pin holes are provided at both ends of the lifting beam (1-2-1). Both ends of the lifting beam (1-2-1) are arranged to slide up and down in the space between the square long tubes of the main struts (1-1-2) to lift the load-bearing beam (1-2-2). Both ends of the load-bearing beam (1-2-2) are fixed to both ends of the lifting beam (1-2-1) and are simultaneously arranged between the main struts (1-1-2) and the auxiliary struts (1-1-3). The lower fixed seat (1-2-3) is fixed in the middle of the two lifting beams (1-2-1). The upper fixed seat (1-2-5) is arranged at the middle position of the two long cross beams (1-1-1). The fixed end of the hydraulic cylinder (1-2-4) is assembled in the lower fixed seat (1-2-3), and the telescopic end is assembled in the upper fixed seat (1-2-5) to lift the lifting beam (1-2-1) to move up and down, realizing the overall rise of the trestle (5).

5. The collapsible ice-breaking and elevating high trestle pontoon bridge for river crossing during ice flood period according to claim 1, wherein: The ice-breaking device (2) includes a truss fixed seat (2-1), an extended truss (2-2), a connecting frame (2-3), an ice breaker suspension truss (2-4), and an ice breaker (2-5). The truss fixed seat (2-1) realizes truss docking. The bottom of the truss fixed seat (2-1) is fixed on the bridge-foot boat (4). One end of the truss fixed seat (2-1) is connected to the extended truss (2-2). The other end of the extended truss (2-2) extends out from the bow and is connected to the connecting frame (2-3). The ice breaker suspension truss (2-4) is arranged between the two connecting frames (2-3). Several ice breakers (2-5) are hung and installed at equal intervals on the ice breaker suspension truss (2-4).

6. The breakable-ice liftable high trestle pontoon bridge for river crossing operation during ice flood season according to claim 5, wherein: The truss fixing seat (2-1) includes a mounting plate (2-1-1), a reinforcing rib (2-1-2), a foot post (2-1-3), a mounting hole (2-1-4), a connecting pipe (2-1-5), a secondary branch pipe (2-1-6), a main branch pipe (2-1-7), and a pin hole (2-1-8). The mounting plate (2-1-1) is fixed on the bridge foot boat (4). The bottom end of the foot post (2-1-3) is connected to the mounting plate (2-1-1). The reinforcing rib (2-1-2) is arranged at the quadrant point of the connection between the foot post (2-1-3) and the mounting plate (2-1-1). The mounting holes (2-1-4) are arranged at the four right angles of the mounting plate (2-1-1) for fixing the truss fixing seat (2-1). The connecting pipe (2-1-5) is at the bottom of the foot post (2-1-3) and horizontally connects two adjacent foot posts (2-1-3) to form a square frame. The secondary branch pipe (2-1-6) is obliquely arranged between the front and rear foot posts (2-1-3). The main branch pipe (2-1-7) is arranged in the middle and upper parts of the foot post (2-1-3), penetrates through the foot post (2-1-3), and connects two adjacent foot posts (2-1-3) to form a rectangular frame. The pin holes (2-1-8) are horizontally and penetratingly arranged at both ends of the main branch pipe (2-1-7) for the positioning and installation of the truss.

7. The collapsible ice-breaking liftable high trestle pontoon bridge for river crossing during ice flood period according to claim 5, wherein: The ice crusher (2-5) includes a housing (2-5-1), an extension plate (2-5-2), an ice crushing mounting plate (2-5-3), a motor (2-5-4), a sealing plate (2-5-5), a cutting head (2-5-6), a hoop seat (2-5-7), a hoop cover (2-5-8), and a hoop pin (2-5-9). Inside the housing (2-5-1), there are horizontally arranged mounting seats for positioning and installing the motor. The extension plate (2-5-2) connects the housing (2-5-1) and the ice crushing mounting plate (2-5-3) up and down. Symmetric mounting holes are provided at the front and rear ends of the ice crushing mounting plate (2-5-3) for installing the hoop seat (2-5-7). The end plate of the motor (2-5-4) is provided with mounting holes, and the end of the motor shaft is provided with threads. A shaft hole is provided in the middle of the sealing plate (2-5-5), and several mounting holes are arranged at the edge for positioning and installing with the motor end plate to prevent water from entering the housing. The cutting head (2-5-6) is connected to the end of the motor shaft (2-5-4) by reverse threads. The cutting head (2-5-6) is conical and several cutting blades are arranged on the conical surface. The hoop seat (2-5-7) and the hoop cover (2-5-8) are connected by the hoop pin (2-5-9) to suspend and fix the ice crusher (2-5) on the ice crusher suspension truss (2-4).

8. A breakable ice lifting high - elevation pontoon bridge for river crossing operation during the ice - flood period according to claim 1, characterized in that: The ice discharging device (3) includes a chain drive (3-1), an ice discharging shaft (3-2), ice discharging paddles (3-3), paddle seats (3-4), paddle pins (3-5), a rotating shaft mounting arm (3-6), a hoop assembly (3-7) and shaft end fixing nuts (3-8). Threads are provided at both ends of the ice discharging shaft (3-2). The chain drive (3-1) is fixedly assembled at the left end of the ice discharging shaft (3-2) through the shaft end fixing nuts (3-8) to drive the ice discharging shaft (3-2) to rotate. A plurality of paddle seats (3-4) are fixedly arranged at equal intervals and at a fixed angle on the ice discharging shaft (3-2). The paddle seats (3-4) are cylinders perpendicular to the ice discharging shaft (3-2), with a rectangular clamping groove in the middle, and two pin holes are provided on the corresponding cylindrical surface of the clamping groove. A plurality of ribs are provided on the back of the ice discharging paddle (3-3), and the front is a concave surface. The paddle pins (3-5) are assembled in the pin holes of the paddle seats (3-4) to fix the ice discharging paddles (3-3). The rotating shaft mounting arms (3-6) are installed at both ends of the ice discharging shaft (3-2) to suspend and install the ice discharging shaft (3-2) under the truss. The hoop assembly (3-7) is used to fixedly install the chain drive (3-1) and the rotating shaft mounting arm (3-6).

9. A crushable ice lifting high - elevation pontoon bridge for river crossing operations during the ice - flood period, characterized in that: The chain drive (3-1) includes side plates (3-1-1), input shaft bearings (3-1-2), input shaft sleeves (3-1-3), flanges (3-1-4), three-phase motors (3-1-5), output shaft bearings (3-1-6), output shaft sleeves (3-1-7), end covers (3-1-8), large sprockets (3-1-9), small sprockets (3-1-10), chains (3-1-11), shaft end baffles (3-1-12), and output shaft flat keys (3-1-13). Each of the upper and lower sides of the side plate (3-1-1) is provided with a shaft hole. The input shaft bearing (3-1-2) is assembled in the upper shaft hole of the side plate (3-1-1). The input shaft sleeve (3-1-3) is assembled in the upper shaft hole of the side plate (3-1-1) to fix the outer ring of the bearing and prevent axial movement. The flange (3-1-4) is assembled at the upper shaft hole opening to install the three-phase motor (3-1-5). The shaft of the three-phase motor (3-1-5) is provided with a flat key to drive the large sprocket (3-1-9) to rotate. The end face of the motor shaft is provided with a pair of screw holes to install the shaft end baffle (3-1-12). The center of the shaft end baffle (3-1-12) is provided with a mounting hole to limit the axial movement of the large sprocket (3-1-9). The output shaft bearing (3-1-6) is assembled in the lower shaft hole of the side plate (3-1-1). The output shaft sleeve (3-1-7) is arranged in the lower shaft hole. The end cover (3-1-8) is arranged at the lower shaft hole opening of the side plate (3-1-1). The large sprocket (3-1-9) is aligned with the upper shaft hole of the side plate (3-1-1) and arranged inside the upper part of the side plate (3-1-1). The small sprocket (3-1-10) is aligned with the lower shaft hole of the side plate (3-1-1) and arranged inside the lower part of the side plate (3-1-1). The chain (3-1-11) is used for the large sprocket (3-1-9) to drive the small sprocket (3-1-10) to rotate. The output shaft flat key (3-1-13) is arranged in the keyway of the small sprocket (3-1-10) to drive the ice discharging shaft (3-2) to rotate.

10. A breakable ice lifting high - altitude pontoon bridge for river crossing operations during the ice flood period according to claim 8, characterized in that: The rotating shaft mounting arm (3-6) includes a cantilever (3-6-1), a fixing ring (3-6-2), an ice discharging shaft bearing (3-6-3), fixing bolts (3-6-4), fixing nuts (3-6-5), and a cantilever fixing plate (3-6-6). The cantilever fixing plate (3-6-6) is arranged at the top of the cantilever (3-6-1), and the fixing ring (3-6-2) is arranged at the bottom. The fixing ring (3-6-2) is provided with an annular groove for installing the ice discharging shaft bearing (3-6-3). The fixing bolts (3-6-4) and fixing nuts (3-6-5) are used to install the fixing ring (3-6-2) at the bottom of the cantilever (3-6-1). The cantilever fixing plate (3-6-6) is provided with several mounting holes for installing the hoop assembly (3-7).

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