Variable width vehicle bridge suitable for flat push erection

Abstract

The application discloses a variable-width vehicle track bridge suitable for a flat-pushing erection mode, which comprises a chassis vehicle, a vehicle track beam, a telescopic cross beam, an erection beam, a telescopic device and an erection device, the vehicle track beam comprises left and right vehicle tracks, the erection beam is installed between the vehicle tracks, one end of the telescopic cross beam is fixed on the vehicle track beam and the other end is slidingly installed in the erection beam, the telescopic device comprises a supporting seat, a supporting box beam, a telescopic oil cylinder and a sliding beam, the supporting seat is installed on the chassis vehicle, the telescopic oil cylinder is installed on the outer side of the supporting seat, the supporting box beam is installed above the supporting seat, the sliding beam is installed at the other end of the telescopic oil cylinder, the supporting box beam is slidingly matched with the sliding beam, supporting rollers are installed above the sliding beam and used for supporting the lower flanges of the vehicle track beam, and the sliding beam can slide on the supporting box beam through the telescoping of the telescopic oil cylinder, so that the lateral width of the vehicle track beam can be changed, that is, the equipment width is narrow in the mobile transportation state and the bridge width is wide in the load passing state, and the passing capacity and the transportation capacity of the bridge equipment are improved.

Description

Technical Field

[0001] This invention relates to a rut bridge, and more particularly to a variable-width rut bridge suitable for a horizontally pushed erection method, mainly for the development of mechanized bridge equipment. Background Technology

[0002] Mechanized bridges are temporary bridges that quickly cross obstacles such as ravines, broken bridges, and steep cliffs. They generally consist of a chassis vehicle, erection equipment, and bridge spans. They are characterized by high mobility and rapid erection speed, playing a vital role both in ensuring troop mobility during wartime and in flood control, disaster relief, and earthquake relief during peacetime. Typical mechanized bridge erection methods include the horizontal pushing type and the tilting type. The horizontal pushing type has advantages such as low erection height and high concealment, and is widely used.

[0003] Mechanized bridges, in their motorized and transport-oriented states, are considered vehicle-mounted equipment, requiring compliance with highway and railway transport requirements. In their loaded state, they function as bridge structures, necessitating vehicular traffic flow. To meet railway transport requirements, bridge spans generally do not exceed 3.4 meters; for highway transport requirements, the width does not exceed 2.55 meters. Furthermore, bridge equipment primarily ensures the passage of vehicles, some of which are wider than 3.4 meters. Therefore, bridge span widths need to exceed 3.4 meters, with wider spans providing better traffic flow. Narrower spans place higher demands on drivers and result in slower travel speeds, particularly when overcoming vertical obstacles such as steep cliffs and seawalls. Currently, for bridges erected using a horizontal pushing method, fixed-track bridges are used, with the same width in both loaded and transport states. During erection, it is difficult to change the track width, leading to poor traffic flow while still meeting transport requirements. Summary of the Invention

[0004] The purpose of this invention is to address the problem of narrow bridge spans and poor traffic performance of push-type mechanized bridge equipment due to railway transportation requirements. It provides a rutted bridge with variable lateral width, which allows the equipment to be narrow in the motorized transportation state and wide in the loaded state, thereby improving the traffic capacity and transportation capacity of the bridge equipment.

[0005] The technical solution for achieving the objective of this invention is as follows:

[0006] A variable-width rut bridge suitable for a horizontally mounted erection method includes a chassis vehicle, a rut bridge, a retractable crossbeam, an erection beam, a telescopic device, and an erection device. The rut bridge includes left and right ruts, each rut comprising a bridge deck, an inner main beam, and an outer main beam. The inner main beam, outer main beam, and bridge deck form a π-shaped cross-section beam. The erection beam is installed between the left and right ruts and includes a crossbeam, longitudinal beams, guide rails, guide rail grooves, and toothed pins. The crossbeams and longitudinal beams form a frame structure. The guide rail grooves are channel-shaped structures installed below the frame structure. The guide rails are installed inside the guide rail grooves, and toothed pins are installed above the guide rails. One end of the retractable crossbeam is fixed to the rut beam, and the other end is slidably installed within the erection beam. The telescopic device includes supports. The system comprises a support base, a support box girder, a telescopic cylinder, ear plates, baffle assemblies, support rollers, and a sliding beam. The support base is mounted on a chassis vehicle, and a telescopic cylinder is installed on the outer side of the support base. The support box girder is mounted above the support base, and a sliding beam is mounted on the other end of the telescopic cylinder. The support box girder has a frame structure, and the support box girder and the sliding beam slide together. Two sets of support rollers are mounted above the sliding beam. The lower flange of the main beam of the rutted bridge rests on the support rollers. Baffle assemblies are installed on both sides of the support rollers to support and restrict the lower flange of the main beam. The sliding beam can slide on the support box girder by extending and retracting the telescopic cylinder, thereby changing the width of the rutted bridge. One end of the erection device is mounted on the chassis vehicle, and the other end is supported on the erection beam for pushing the rutted bridge for erection.

[0007] Compared with the prior art, the significant advantages of the present invention are:

[0008] 1. It can achieve lateral widening of the rutted bridge, with a narrow transport width in transport mode and a wide carriageway width in overload mode;

[0009] 2. This variable-width rut bridge can be erected and dismantled using existing erection equipment without any adjustments, and it has good compatibility with existing equipment;

[0010] 3. This widening method has wide adaptability and can be used for bridge equipment based on armored chassis as well as bridge equipment based on ordinary off-road truck chassis. It can be used for single-section bridges as well as multi-section bridges.

[0011] The present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0012] Figure 1 Variable Width Bridge General Layout

[0013] Figure 2 : ruts and retractable crossbeams

[0014] Figure 3 Variable width rutted bridge (excluding chassis)

[0015] Figure 4 Assembly drawings of telescopic device, erection device and chassis.

[0016] Figure 5 Enlarged view of Part I

[0017] Figure 6 Erecting beams

[0018] Figure 7 Erection device

[0019] Figure 8 Lateral widening of the rutted bridge

[0020] Figure 9 Lateral narrowing of the rutted bridge Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings. The embodiments listed are only for the purpose of helping to understand the present invention and should not be construed as limiting the scope of protection of the invention. For those skilled in the art, improvements and modifications can be made to the present invention without departing from the principles and ideas of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

[0022] Combination Figures 1-3 As shown, a variable-width rut bridge of the present invention, applicable to a horizontally mounted erection method, includes a chassis 1, a rut beam 2, a telescopic crossbeam 3, a telescopic device 4, an erection beam 5, and an erection device 6. The chassis 1 is equipped with the telescopic device 4, and the rut beam 2 is mounted on the telescopic device 4. The telescopic device 4 can drive the rut beam 2 to slide left and right. The rut beam 2 includes two ruts 21, each with a π-shaped cross-section. The erection beam 5 is installed between the two ruts 21. One end of the telescopic crossbeam 3 is fixed to the rut beam 2, and the other end is slidably installed within the erection beam 5. The erection device 6 is installed at the front end of the rut beam 2 and is used to push the rut bridge forward and backward. The rut 21 includes a bridge deck 211, an inner main beam 212, and an outer main beam 213, which together with the bridge deck 211 form a π-shaped cross-section beam.

[0023] Combination Figures 4-5As shown, the chassis vehicle 1 is modified with ear seat 11, ear seat 2 12, and ear seat 3 13. The extension device 4 includes a support base 41, a support box beam 42, an extension cylinder 43, ear plates 44, baffle group 45, support rollers 46, and a sliding beam 47. The support base 41 is connected to ear seat 3 13 on the chassis vehicle. The extension cylinder 43 is mounted on the outside of the support base 41. The support box beam 42 is mounted on the top of the support base 41. The sliding beam 47 is mounted on the other end of the extension cylinder 43 through the ear plate 44. The support box beam 42 is a frame structure. The support box beam 42 and the sliding beam 47 are slidably engaged. Two sets of support rollers 46 are mounted on the top of the sliding beam 47. The lower flange of the rut beam 2 sits on the support rollers 46. Baffle group 45 is mounted on both sides of the support rollers 46 to support and restrict the lower flange of the rut beam 2. The sliding beam 47 can slide on the support box beam 42 by the extension and retraction of the extension cylinder 43, thereby changing the width of the rut bridge.

[0024] Combination Figure 6 As shown, the supporting beam 5 includes a crossbeam 51, a longitudinal beam 52, a guide rail 53, a guide rail groove 54, and a toothed pin 55. The crossbeam 51 and the longitudinal beam 52 form a frame structure. The guide rail groove 54 is a groove-shaped structure and is installed below the frame structure. The guide rail 53 is installed inside the guide rail groove 54, and the toothed pin 55 is installed above the guide rail 53.

[0025] Combination Figure 7 As shown, the middle and rear ends of the erection device 6 are connected to the first ear seat 11 and the second ear seat 12 on the chassis vehicle, respectively, and the other end is supported on the erection beam 5 for pushing the rut bridge for erection. The erection device 6 includes a first support ear 61, a second support ear 62, a boom 63, a roller assembly 64, a transmission device 65, and a cantilever cylinder 66. The first support ear 61 is located below the boom 63 and is used to connect to the first ear seat 11 on the chassis vehicle. The second support ear 62 is located at the rear of the boom 63. The rear end of the boom 63 is also equipped with a cantilever cylinder 66. The second support ear 62 and the second ear seat 12 on the chassis vehicle are connected through the cantilever cylinder 66. The boom 63 is a box-shaped frame structure. Two sets of rollers 64 are arranged on both sides of the boom 63 and pass through the left and right guide rails 53 to support the rutted bridge. The transmission device 65 is set on both sides of the boom 63. The transmission device 65 is also equipped with gears 651 to move the toothed pins 55 to realize the extension and retraction of the bridge span.

[0026] Combination Figures 8-9 As shown, under the drive of hydraulic power, the extension cylinder 43 causes the sliding beam 57 to slide left and right within the supporting box beam 42. Since the telescopic crossbeam 3 is slidably connected to the supporting beam 5, and the telescopic crossbeam 3 is fixedly connected to the rut 21, while the supporting beam 5 is not fixedly connected to the inner main beam 212, the sliding beam 47, as it slides, changes the width between the left and right ruts above the roller 46, thus achieving the purpose of changing the lateral width of the rut bridge.

[0027] The chassis can be either an armored chassis or a regular off-road truck.

[0028] The rutted bridge can be used as a single-section bridge or a multi-section folding bridge.

Claims

1. A variable-width rut bridge suitable for a horizontally pushed erection method, characterized in that, The system includes a chassis vehicle (1), a rut beam (2), a telescopic crossbeam (3), a telescopic device (4), a support beam (5), and a support device (6). The chassis vehicle (1) is equipped with a telescopic device (4). The rut beam (2) is installed on the telescopic device (4). The telescopic device (4) can drive the rut beam (2) to slide left and right. The rut beam (2) includes two ruts (21) on the left and right. The support beam (5) is installed between the two ruts (21). One end of the telescopic crossbeam (3) is fixed on the rut beam (2), and the other end is slidably installed in the support beam (5). The support device (6) is installed at the front end of the rut beam (2) and is used to push the rut bridge to move back and forth. The chassis (1) is modified with ear seat one (11), ear seat two (12) and ear seat three (13). The telescopic device (4) includes a support base (41), a support box beam (42), a telescopic cylinder (43), an ear plate (44), a baffle assembly (45), a support roller (46), and a sliding beam (47). The support base (41) is connected to the ear base (13). The telescopic cylinder (43) is mounted on the outside of the support base (41). The support box beam (42) is mounted on the top of the support base (41). The sliding beam (47) is mounted on the other end of the telescopic cylinder (43) through the ear plate (44). The box girder (42) is a frame structure. The supporting box girder (42) and the sliding beam (47) are in sliding fit. Two sets of supporting rollers (46) are installed on the upper part of the sliding beam (47). The lower flange of the rut beam (2) sits on the supporting rollers (46). Baffles (45) are installed on both sides of the supporting rollers (46) to support and restrict the lower flange of the rut beam (2). The sliding beam (47) can slide on the supporting box girder (42) by the extension and retraction of the telescopic cylinder (43), which drives the change of the width of the rut bridge. The supporting beam (5) includes a crossbeam (51), a longitudinal beam (52), a guide rail (53), a guide rail groove (54), and a toothed pin (55). The crossbeam (51) and the longitudinal beam (52) form a frame structure. The guide rail groove (54) is a groove structure and is installed below the frame structure. The guide rail (53) is installed inside the guide rail groove (54), and a toothed pin (55) is installed above the guide rail (53). The rut (21) includes a bridge deck (211), an inner main beam (212) and an outer main beam (213), and the inner main beam (212), the outer main beam (213) and the bridge deck (211) form a π-shaped cross-section beam; The erection device (6) includes a first support lug (61), a second support lug (62), an arm body (63), a roller assembly (64), a transmission device (65), and a cantilever cylinder (66). The arm body (63) is a box-shaped frame structure. The first support lug (61) is located below the arm body (63) and is used to connect with the first lug seat (11). The second support lug (62) is located at the rear of the arm body (63). A cantilever cylinder (66) is also provided at the rear end of the arm body (63). The second support lug (62) and the second lug seat (12) are connected by the cantilever cylinder (66). Two sets of roller assemblies (64) are arranged on both sides of the arm body (63) and pass through the left and right guide rails (53) to support the rutted bridge. The transmission device (65) is located on both sides of the arm body (63). A gear (651) is also provided on the transmission device (65) to move the toothed pin (55) to realize the extension and retraction of the bridge span.

2. A variable-width rut bridge suitable for a horizontally pushed erection method according to claim 1, characterized in that, The chassis is a regular off-road truck.

3. A variable-width rut bridge suitable for a horizontally pushed erection method according to claim 1, characterized in that, The chassis vehicle is an armored chassis.

4. A variable-width rut bridge suitable for a horizontally pushed erection method according to claim 1, characterized in that, The rutted bridge is a single-section bridge.

5. A variable-width rut bridge suitable for a horizontally pushed erection method according to claim 1, characterized in that, The rutted bridge is a multi-section folding bridge.

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