Existing line old beam dismantling vehicle

Abstract

The utility model belongs to the technical field of railway bridge construction, and particularly relates to an existing line old beam dismantling vehicle. A machine frame of a hoisting mechanism in the dismantling vehicle is fixed to the surface of a rail flat car, two rail beams can be bent and fixed to the front side and the rear side of the advancing direction of the machine frame respectively, a plurality of bent sections are straightened, and the ends, away from the end fixed to the machine frame, of the rail beams are located above a rail of an adjacent bridge. The front end and the rear end of the crane car are respectively supported on the two track beams and move along the track beams; and a lifting appliance is arranged below the crane car and close to each of the two track beams. Therefore, both the track beam and the lifting appliance can be folded by the dismantling vehicle, so that the lifting mechanism is ensured to be within the railway vehicle limit, and the transportation is convenient. In addition, the track beam and the lifting appliance can be opened, the crane car runs to the position above the track of the adjacent line bridge, beam dismounting construction of the adjacent line bridge is carried out, and the purposes that the adjacent line bridge is replaced without being affected by the geographical environment, and it is guaranteed that a new beam is accurately in place are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of railway bridge construction, in particular to a vehicle for dismantling old beams of existing lines. Background Art

[0002] After years of operation, railway bridges have exposed reinforcement in many places, the longitudinal and bottom surfaces of the flanges have peeled, the protective layer of the lower wing of the beam has begun to bulge and crack, the beam ribs have peeled and fallen off, and a large number of longitudinal and vertical cracks have appeared, causing the main reinforcement to rust, which seriously threatens the safety of railway traffic. The bridge must be replaced to eliminate the hidden dangers of diseases and ensure unimpeded railway traffic. The existing existing line beam replacement construction adopts the bridge erection machine method, the trolley method and the crane method.

[0003] However, since the trolley method and the crane method need to rotate the mechanical arm to move the old beam and the new beam during operation, the rotation of the mechanical arm requires a certain rotation space, and there must be no objects that affect the rotation of the mechanical arm. Therefore, these two methods are greatly affected by the geographical environment. In addition, the mechanical arm is a single arm, and the lifted new beam will swing back and forth, which will result in poor positioning accuracy of the new beam and a long construction time. The bridge erection machine can only operate the operations on the bridge where it is located, and cannot meet the construction conditions of replacing the adjacent line bridge, so the bridge erection machine method also has certain limitations. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a vehicle for dismantling old beams of existing lines, thereby solving the technical problems of environmental requirements during construction, poor positioning accuracy of new beams, long construction time and inability to replace adjacent line bridges.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0008] The utility model provides a vehicle for removing old beams from an existing line, comprising a rail flat car and a rail locomotive, wherein the rail locomotive pulls the rail flat car to move, and further comprises a hoisting mechanism, which is fixed on the rail flat car and comprises a frame, two rail beams and a crane, wherein the frame is fixed on the surface of the rail flat car, the two rail beams are respectively fixed on the front and rear sides of the frame in the direction of travel, tracks are provided on the upper surfaces of the rail beams, the front and rear ends of the crane are respectively supported on the two rail beams, and the wheels of the crane can move on the tracks along the rail beams; a hoist is respectively arranged under the crane near the two rail beams, and the space between the crane and the frame is used to carry the old beams on the adjacent line bridge that need to be replaced; each rail beam comprises a plurality of bending sections, each bending section can be bent in a direction away from another rail beam, and when the plurality of bending sections are straightened in a line, the end of the rail beam away from the frame and fixed is located above the track of the adjacent line bridge.

[0009] Furthermore, the track beam is fixed to the frame through the support beam, the top end of the support beam is fixed to the track beam, and the bottom end of the support beam is hinged to the frame through a first hinge seat fixed on the frame; the support beam adjusts the inclination angle through a diagonal support telescopic driver, and both ends of the diagonal support telescopic driver are respectively hinged to the frame and the support beam through a second hinge seat fixed on the frame and a third hinge seat fixed on the support beam, and the support beam, the diagonal support telescopic driver and the frame form a triangular stable structure.

[0010] Furthermore, the sling comprises a fixed part and two movable parts, and the two movable parts are respectively hinged at two ends of the fixed part; the rotation range of the movable part is to rotate upward by ninety degrees from a position colinear with the fixed part.

[0011] Furthermore, the upper surfaces of the two movable parts are both provided with hanging grooves.

[0012] Furthermore, movable pulleys are provided at both ends of the two fixed parts, and fixed pulleys are provided at positions corresponding to all movable pulleys on the crane, and each corresponding fixed pulley and movable pulley form a pulley group; four winches are provided on the crane corresponding to four pulley groups respectively, and the wire rope in the winch is passed around the corresponding pulley group to adjust the height of the sling.

[0013] Furthermore, a support leg is provided at one end of the track beam away from the fixed frame, the upper end of the support leg is fixed to the track beam, and the lower end of the support leg is supported on the track of the adjacent bridge through a support seat.

[0014] Furthermore, the supporting leg includes an inner rod and an outer tube which are coaxially sleeved, the upper end of the outer tube is fixed to the track beam, the upper end of the inner rod can move in the outer tube, and the lower end of the inner rod is supported on the track of the adjacent bridge through a support seat.

[0015] Furthermore, a telescopic drive is provided between each two adjacent bending sections. The telescopic drive is located on a side of the track beam away from the other track beam, and both ends of the telescopic drive are respectively hinged to the two bending sections.

[0016] Furthermore, limit blocks are provided at both the front and rear ends of the track.

[0017] Furthermore, positioning pieces are provided at the four corners of the frame, and four protrusions are provided on the rail flat car corresponding to the four positioning pieces, and the four protrusions extend into the corresponding four positioning pieces respectively to fix the frame.

[0018] (III) Beneficial effects

[0019] The beneficial effects of the utility model are:

[0020] The utility model relates to a vehicle for dismantling old beams of an existing line. A hoisting mechanism is arranged on a track flat car. Two track beams including a plurality of bending sections are arranged on the frame of the hoisting mechanism. When the plurality of bending sections are straightened in a line, the end of the track beam that is far from being fixed to the frame is located above the track of the adjacent line bridge. A crane is supported on the track beam. A foldable hoist is arranged below the crane near the two track beams. The space between the crane and the frame is used to carry the old beams on the adjacent line bridge that need to be replaced. During transportation, the track beam and the hoist can be folded to ensure that the hoisting mechanism is within the limit of the railway vehicle, and transportation is convenient. When hoisting the old beam, the track beam and the hoist can be opened, and the crane can be moved to the track above the adjacent line bridge to carry out the adjacent line bridge dismantling construction. Then, the crane with the old beam hoisted is moved back to the initial position, and the old beam is loaded on the frame and leaves the site.

[0021] Compared with the existing technology, it ensures that the lifting mechanism is within the limits of the railway vehicle, which is convenient for transportation. The replacement of the adjacent line bridge is not affected by the geographical environment. There is enough space for construction. The construction process is simple and the construction time is short. At the same time, it ensures that the new beam is accurately positioned, which is convenient for construction and greatly improves construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural diagram of the vehicle removing old beams from existing lines while it is moving;

[0023] Figure 2 A schematic diagram of the structure when the old beam removal vehicle for the existing line lifts the old beam of the adjacent line bridge;

[0024] Figure 3 for Figure 2 Schematic diagram of the locally enlarged structure of A in the middle.

[0025] [Description of Reference Numerals]

[0026] 1: rail flat car; 11: bump; 2: rail locomotive;

[0027] 3: Hoisting mechanism; 31: Frame; 311: First articulated seat; 312: Second articulated seat; 313: Positioning member; 32: Track beam; 321: Track; 322: Bending section; 323: Limiting block: 33: Lifting vehicle; 331: Fixed pulley; 34: Lifting device; 341: Fixed part; 342: Movable part: 343: Lifting slot; 344: Movable pulley; 35: Support beam; 351: Third articulated seat; 36: Diagonal support telescopic drive; 37: Winch; 38: Support leg; 381: Inner rod; 382: Outer cylinder; 39: Telescopic drive;

[0028] 4: adjacent line bridge; 41: old beam;

[0029] 5: Support seat. DETAILED DESCRIPTION

[0030] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0031] like Figure 1-3 As shown, the utility model provides a vehicle for removing old beams from existing lines, such as Figure 1-2 As shown, it includes a rail flat car 1, a rail locomotive 2 and a hoisting mechanism 3. The hoisting mechanism 3 is fixed on the rail flat car 1, and the rail locomotive 2 pulls the rail flat car 1 to move with the hoisting mechanism 3. The hoisting mechanism 3 includes a frame 31, two rail beams 32 and a crane 33.

[0032] The frame 31 is fixed to the surface of the rail flat car 1. Specifically, Figure 3 As shown, positioning pieces 313 are provided at the four corners of the frame 31 , and four protrusions 11 are provided on the rail flat car 1 corresponding to the four positioning pieces 313 , and the four protrusions 11 extend into the corresponding four positioning pieces 313 respectively to fix the frame 31 .

[0033] like Figure 1-2 As shown, the two track beams 32 are respectively fixed to the front and rear sides of the frame 31 in the direction of travel. Specifically, the track beam 32 is fixed to the frame 31 through the support beam 35, and the top of the support beam 35 is fixed to the track beam 32. Figure 3As shown, the bottom end of the support beam 35 is hinged to the frame 31 through a first hinge seat 311 fixed on the frame 31. When the surface of the track flat car 1 is not horizontal, the support beam 35 adjusts the inclination angle through the diagonal support telescopic driver 36 to make the track beam 32 in a horizontal state. Specifically, the two ends of the diagonal support telescopic driver 36 are respectively hinged to the frame 31 and the support beam 35 through a second hinge seat 312 fixed on the frame 31 and a third hinge seat 351 fixed on the support beam 35, and the support beam 35, the diagonal support telescopic driver 36 and the frame 31 form a triangular stable structure to maintain the stability of the track beam 32.

[0034] like Figure 1-3 As shown, each track beam 32 includes a plurality of bending sections 322, and each bending section 322 can be bent in a direction away from another track beam 32. Specifically, as Figure 2-3 As shown, a telescopic driver 39 is provided between each two adjacent bending sections 322. The telescopic driver 39 is located on the side of the track beam 32 away from the other track beam 32. The two ends of the telescopic driver 39 are respectively hinged to the two bending sections 322 to realize the folding of the bending sections 322. During the travel of the existing line old beam removal vehicle, the bending section 322 of the track beam 32 is folded to ensure that the hoisting mechanism 3 is within the limit of the railway vehicle, which is convenient for transportation.

[0035] like Figure 2 As shown, when the bent sections 322 are straightened in a line, the end of the track beam 32 away from the fixed frame 31 is located above the track of the adjacent bridge 4. The end of the track beam 32 away from the fixed frame 31 is provided with a support leg 38, the upper end of the support leg 38 is fixed to the track beam 32, and the lower end of the support leg 38 is supported on the track of the adjacent bridge 4 through the support seat 5.

[0036] Preferably, the support leg 38 is configured as a telescopic structure, including a coaxially sleeved inner rod 381 and an outer cylinder 382, ​​the upper end of the outer cylinder 382 is fixed to the track beam 32, the upper end of the inner rod 381 can move in the outer cylinder 382, ​​and the lower end of the inner rod 381 is supported on the track of the adjacent bridge 4 through the support seat 5. The support leg 38 adopts a telescopic structure to ensure that the hoisting mechanism 3 is within the limit of the railway vehicle during the travel process, which is convenient for transportation.

[0037] like Figure 3 As shown, the front and rear ends of the crane 33 are supported on two track beams 32 respectively, and the space between the crane 33 and the frame 31 is used to carry the old beam 41 on the adjacent bridge 4 that needs to be replaced. Specifically, a track 321 is provided on the upper surface of the track beam 32, and the wheels of the crane 33 can move along the track beam 32 on the track 321. Limiting blocks 323 are provided at the front and rear ends of the track 321 to prevent the crane 33 from falling off the track 321 when moving on the track beam 32.

[0038] like Figure 1-3 As shown, a lifting device 34 is respectively arranged below the crane 33 near the two track beams 32 for lifting the old beam 41. Figure 3 As shown, the sling 34 includes a fixed portion 341 and two movable portions 342. The two movable portions 342 are respectively hinged at both ends of the fixed portion 341. The movable portion 342 can rotate upward by ninety degrees from a position colinear with the fixed portion 341. The folding structure of the sling 34 is also used to ensure that the hoisting mechanism 3 is within the limit of the railway vehicle during travel, which is convenient for transportation.

[0039] The upper surfaces of the two movable parts 342 are both provided with hanging grooves 343, and the hanging grooves 343 are used to hang the hanging belts on the old beams.

[0040] Both ends of the two fixed parts 341 are provided with movable pulleys 344, and the positions corresponding to all movable pulleys 344 on the crane 33 are provided with fixed pulleys 331, and each corresponding fixed pulley 331 and movable pulley 344 form a pulley block. The crane 33 is provided with four winches 37 corresponding to the four pulley blocks respectively, and the wire rope in the winch 37 passes through the corresponding pulley blocks to adjust the height of the sling 34.

[0041] In addition, the utility model also includes an electric control system (not shown in the figure), which can fold the track beam 32 and the hanger 34, extend and retract the support legs 38, move the crane 33 forward and backward, and retract and release the wire rope by the winch 37 as needed.

[0042] Working process: First, fix the lifting mechanism 3 on the rail flat car 1, let the rail locomotive 2 pull the rail flat car 1 and move the lifting mechanism 3 to the beam removal position and stop. At this time, the bending section 322 of the rail beam 32 is in a folded state, the hoisting device 34 is in a folded state, and the support leg 38 is in a retracted state. Next, perform (1) the beam removal process: the operator remotely controls the bending section 322 of the rail beam 32 to unfold, so that the end of the rail beam 32 away from the frame 31 is located above the track of the adjacent bridge 4 where the beam needs to be removed. Then extend the inner rod 381 in the support leg 38 and support it on the track of the adjacent bridge 4. The crane 33 moves on the track beam 32 with the sling 34 to the end of the track beam 32 that is away from the fixed frame 31. The winch 37 releases the wire rope to control the pulley block to lower the sling 34, unfolds the sling 34, and ties the sling on the old beam 41 to the hanging groove 343 of the movable part 342. Then the winch 37 retracts the wire rope to control the pulley block to lift the sling 34. The crane 33 lifts the old beam 41 and moves it back to the top of the track flat car 1. The winch 37 releases the wire rope to control the pulley block to lower the sling 34 and place the old beam 41 on the track flat car 1. (2) Car closing process: The operator remotely retracts the inner rod 381 of the support leg 38 into the outer cylinder 382, ​​and then folds the track beam 32 and the sling 34. Finally, the track flat car 1 loaded with the old beam 41 is towed away by the track locomotive 2, and the beam removal is completed.

[0043] In the description of the present utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the present utility model, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0046] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0047] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A vehicle for removing old beams from existing lines, comprising a rail flat car (1) and a rail locomotive (2), wherein the rail locomotive (2) pulls the rail flat car (1) to move, and is characterized in that: It also includes a hoisting mechanism (3), which is fixed on the rail flat car (1) and includes a frame (31), two rail beams (32) and a crane (33), wherein the frame (31) is fixed on the surface of the rail flat car (1), the two rail beams (32) are respectively fixed on the front and rear sides of the frame (31) in the direction of travel, the upper surface of the rail beam (32) is provided with a track (321), the front and rear ends of the crane (33) are respectively supported on the two rail beams (32), and the wheels of the crane (33) can move on the track (321) along the track beam (32); A lifting device (34) is respectively arranged below the crane (33) near the two track beams (32); the space between the crane (33) and the frame (31) is used to carry the old beam (41) on the adjacent bridge (4) that needs to be replaced; Each of the track beams (32) includes a plurality of bending sections (322), and each of the bending sections (322) can be bent in a direction away from another track beam (32). When the plurality of bending sections (322) are straightened in a line, the end of the track beam (32) away from the fixed frame (31) is located above the track of the adjacent bridge (4).

2. The vehicle for removing old beams from existing lines according to claim 1 is characterized in that: The track beam (32) is fixed to the frame (31) via a support beam (35), the top end of the support beam (35) is fixed to the track beam (32), and the bottom end of the support beam (35) is hinged to the frame (31) via a first hinge seat (311) fixed on the frame (31); The support beam (35) adjusts its inclination angle through a diagonal brace telescopic driver (36); two ends of the diagonal brace telescopic driver (36) are respectively hinged to the frame (31) and the support beam (35) through a second hinge seat (312) fixed on the frame (31) and a third hinge seat (351) fixed on the support beam (35); the support beam (35), the diagonal brace telescopic driver (36) and the frame (31) form a triangular stable structure.

3. The vehicle for removing old beams from existing lines according to claim 1 is characterized in that: The sling (34) comprises a fixed portion (341) and two movable portions (342), wherein the two movable portions (342) are respectively hinged to two ends of the fixed portion (341); The rotation range of the movable portion (342) is to rotate upward by ninety degrees from a position colinear with the fixed portion (341).

4. The vehicle for removing old beams from existing lines according to claim 3 is characterized in that: The upper surfaces of the two movable parts (342) are both provided with hanging grooves (343).

5. The vehicle for removing old beams from existing lines according to claim 3 is characterized in that: Both ends of the two fixing parts (341) are provided with movable pulleys (344); positions on the lifting vehicle (33) corresponding to all the movable pulleys (344) are provided with fixed pulleys (331); and each corresponding fixed pulley (331) and movable pulley (344) form a pulley block; The crane (33) is provided with four winches (37) corresponding to the four pulley blocks respectively, and the steel wire rope in the winch (37) passes around the corresponding pulley blocks to adjust the height of the sling (34).

6. The vehicle for removing old beams from existing lines according to claim 1, characterized in that: A support leg (38) is provided at one end of the track beam (32) away from the end fixed to the frame (31), the upper end of the support leg (38) is fixed to the track beam (32), and the lower end of the support leg (38) is supported on the track of the adjacent bridge (4) through a support seat (5).

7. The vehicle for removing old beams from existing lines according to claim 6 is characterized in that: The support leg (38) includes an inner rod (381) and an outer tube (382) which are coaxially sleeved, the upper end of the outer tube (382) is fixed to the track beam (32), the upper end of the inner rod (381) can move in the outer tube (382), and the lower end of the inner rod (381) is supported on the track of the adjacent bridge (4) through the support seat (5).

8. The vehicle for removing old beams from existing lines according to claim 1 is characterized in that: A telescopic drive (39) is provided between each of the two adjacent bending sections (322), and the telescopic drive (39) is located on a side of the track beam (32) away from the other track beam (32), and two ends of the telescopic drive (39) are respectively hinged to the two bending sections (322).

9. The vehicle for removing old beams from existing lines according to claim 1, characterized in that: Limiting blocks (323) are provided at both the front and rear ends of the track (321).

10. The vehicle for removing old beams from existing lines according to claim 1, characterized in that: The four corners of the frame (31) are each provided with a positioning piece (313), and the rail flat car (1) is provided with four protrusions (11) corresponding to the four positioning pieces (313), and the four protrusions (11) respectively extend into the corresponding four positioning pieces (313) to fix the frame (31).

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