A segment crane beam structure suitable for horizontal turns with large slopes and small curves

Abstract

The present invention proposes a segment crane beam structure suitable for horizontal turns with large slopes and small curves, including a segment crane beam and a segment crane moving on the segment crane beam, wherein the segment crane is provided with a moving force acting member, and the segment crane beam is provided with a moving force supporting member, and the moving force of the segment crane is transmitted between the moving force acting member and the moving force supporting member. Beneficial effects: The segment crane beam has a simple structure and is easy to drive. It is driven by a gear rack, and can well control the movement and stop of the segment crane when the shield machine goes uphill or downhill at a large angle; the segment crane beam is provided with a connecting short beam between the fixed section beam and the floating section beam, so that the shield machine can better adapt to the working conditions of horizontal turns.

Description

Technical Field

[0001] The invention relates to tunnel construction equipment, in particular to a segment crane beam structure suitable for horizontal turns with large slopes and small curves. Background Art

[0002] At present, in the construction of large-scale heavy-load shield machines in existing underground projects in China, when the uphill and downhill conditions are small angles (slope less than 0.5%), the segment crane overcomes the friction through the running wheels and walks on the segment crane beam; but when the shield machine is working at a large angle (slope greater than 0.5%), the segment crane is difficult to drive on the crane beam due to excessive friction, or it is easy to slide after its own weight overcomes the friction; on the other hand, when the shield machine turns horizontally, the crane beam creates an angle between the trailer and the connecting bridge, and the segment crane cannot pass smoothly. The above factors have greatly limited the ability of the shield machine to adapt to construction. Summary of the invention

[0003] The present invention proposes a segment crane beam structure suitable for large slopes, small curves and horizontal turns. It is different from previous segment crane beams in driving form, crane beam segmentation and articulation method at the segments. The present invention can enable the segment crane beam of the shield machine to adapt to the working conditions of large-angle ups and downslopes and small curves and horizontal turns, solving the problem that the existing segment crane beam restricts the shield machine from going ups and downslopes and turning.

[0004] The technical solution of the present invention is implemented as follows: a segment crane beam structure suitable for horizontal turns with large slopes and small curves includes a segment crane beam and a segment crane that moves on the segment crane beam, the segment crane is provided with a moving force application member, the segment crane beam is provided with a moving force support member, and the moving force of the segment crane is transmitted between the moving force application member and the moving force support member.

[0005] The segment crane is provided with a driving device, which drives the moving force acting member to move.

[0006] The moving force acting member is a gear, the moving force supporting member is a rack, the driving device drives the gear, the rack is fixed on the segment crane beam, and the gear is meshed with the rack.

[0007] The segment crane is provided with running wheels, and the segment crane beam is provided with tracks, and the running wheels run on the tracks.

[0008] The segment crane beam comprises at least two sections, and two adjacent sections are movably connected.

[0009] The teeth of the rack located at the connection between the two sections of the segment crane beams are correction teeth.

[0010] The segment crane beam comprises a fixed segment beam, a connecting short beam and a floating segment beam. The fixed segment beam is movably connected to the connecting short beam, and the connecting short beam is movably connected to the floating segment beam.

[0011] The fixed segment beam is arranged on the connecting bridge, the floating segment beam is arranged on the trailer, and the connecting bridge is movably connected to the trailer.

[0012] The fixed section beam and the floating section beam are both connected to the movable part through a pin shaft I, and the movable part is connected to the connecting short beam through a pin shaft II and a joint bearing.

[0013] Function or purpose achieved: The segment crane beam can adapt well to the large-angle uphill and downhill conditions encountered during the construction of large-scale heavy-loaded shield machines, and can also adapt to the small-curve horizontal turning conditions of the shield machine.

[0014] Beneficial effects: This segment crane beam has a simple structure and is easy to drive. It is driven by a rack and pinion and can well control the movement and stopping of the segment crane when the shield machine goes uphill or downhill at a large angle. The segment crane beam is connected by a short beam between the fixed section beam and the floating section beam, so that the shield machine can better adapt to horizontal turning conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 yes Figure 1 AA section view.

[0018] Figure 3 yes Figure 1 Enlarged view of point Ⅰ.

[0019] Figure 4 yes Figure 3 BB cross-sectional view.

[0020] Figure 5 It is a posture diagram that simulates the connection between the short beam and the fixed segment beam when going up and down a slope at a large angle.

[0021] In the figure: 1. connecting bridge, 2. trailer, 3. segment crane beam, 4. fixed segment beam, 5. connecting short beam, 6. floating segment beam, 7. driving device, 8. walking wheel, 9. track, 10. gear, 11. rack, 12. fixed segment beam rack, 13. connecting short beam rack, 14. floating segment beam rack, 15. pin I, 16. pin II, 17. spherical bearing. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] A segment crane beam structure suitable for horizontal turns with large slopes and small curves includes a segment crane beam 3 and a segment crane moving on the segment crane beam 3, a moving force acting member is provided on the segment crane, and a moving force supporting member is provided on the segment crane beam 3, and the moving force for moving the segment crane is transmitted between the moving force acting member and the moving force supporting member. The moving force supporting member is a supporting member that provides forward and backward moving force for the segment, and the moving force is transmitted to the moving force acting member to drive the movement of the segment. The driving device can provide power for the moving force supporting member, such as the moving force supporting member is a screw rod that is driven to rotate, and the moving force acting member is a threaded member fixed on the segment crane and pushed by the screw rod. The driving device can also provide power for the moving force acting member, such as the moving force supporting member is a rack or chain fixed on the segment crane beam, and the moving force acting member is a gear that is driven to rotate.

[0024] Preferably, the driving device 7 is installed on the segment crane to drive the moving force acting member to move.

[0025] Preferably, the moving force acting member is a gear 10, the moving force supporting member is a rack 11, the driving device 7 drives the gear 10 to rotate, the rack 11 is fixed on the segment crane beam 3, the gear 10 is meshed with the rack 11, thereby pushing the segment crane to move.

[0026] Preferably, Figure 1 and 3 As shown, the segment crane beam 3 includes a fixed segment beam 4, a connecting short beam 5 and a floating segment beam 6. The fixed segment beam 4 is arranged on the trailer 2, the floating segment beam 6 is arranged on the connecting bridge 1, and the connecting short beam 5 is arranged directly below the hinge between the trailer 2 and the connecting bridge 1. The fixed segment beam 4 and the connecting short beam 5, and the connecting short beam 5 and the floating segment beam 6 are all movable connections. When the shield machine turns horizontally, the segment crane can smoothly pass through the crane beam segment and prevent movement due to the track gap. Specifically, as Figure 4 As shown, the fixed segment beam 4 and the floating segment beam 6 are both connected to the movable part through the pin shaft I15, and the movable part is connected to the connecting short beam 5 through the pin shaft II16 and the joint bearing 17.

[0027] like Figure 2As shown, the three beam sections are all provided with tracks 9 and racks 11. The racks 11 include fixed beam racks 12, connecting short beam racks 13 and floating beam racks 14. The length of the tracks and racks provided on each beam is determined according to the length of the beam. The segment crane is provided with a driving device 7, traveling wheels 8 and gears 10. The traveling wheels 8 travel on the tracks 9, and the gears 10 mesh with the racks 11. The driving device drives the gears to mesh and rotate with the racks, thereby driving the segment crane to slide on the tracks through the traveling wheels. Due to the coordination of the gears and racks, the segment crane can be driven with high power when the shield machine is ascending at a large angle, and can be prevented from sliding on the segment crane beam due to its own weight when the shield machine is descending at a large angle. Figure 5 As shown, the teeth of the rack 11 located at the connection between the two sections of the segment crane beam 3 are modified teeth to ensure smooth transition of the gears when turning.

[0028] The present invention includes the following features:

[0029] Feature (1): The driving device 7 drives the gear 10 to work. Since the gear 10 is engaged with the rack 11 arranged on the segment crane beam 3, the segment crane rolls on the track 9 arranged on the segment crane beam 3 through the running wheel 8.

[0030] Feature (2): When the driving device 7 stops working, due to the cooperation of the rack 11 and the gear 10 arranged on the segment crane beam 3, when the shield machine is in a large-angle uphill or downhill slope condition, the walking wheel 8 will not slide on the track 9 due to the deadweight of the segment crane, and the segment crane can still work normally.

[0031] Feature (3): When the shield machine is in a high-angle uphill working condition, compared with the previous working method of driving the walking wheels to slide on the track, the transmission efficiency of the gear 10 and the rack 11 is high and the operation is reliable, and the ability to drive the segment crane to travel is enhanced.

[0032] Feature (4): The entire segment crane beam is designed in three sections, including a fixed segment beam 4, a connecting short beam 5, and a floating segment beam 6. The fixed segment beam 4 and the connecting short beam 5, and the connecting short beam 5 and the floating segment beam 6 are hinged with pins I15, pins II16, and spherical bearings 17 to meet the working conditions of the angle between the connecting bridge 1 and the trailer 2 when the shield machine makes a horizontal turn.

[0033] Feature (5): At the hinge between the connecting bridge 1 and the trailer 2, the segment crane beam 3 is divided into three sections. When the shield machine turns horizontally and causes the connecting bridge 1 and the trailer 2 to form an angle, the fixed segment beam 4, the connecting short beam 5 and the floating segment beam 6 can play a transition role, allowing the segment crane to pass smoothly and stably.

[0034] Feature (6): When the shield machine goes uphill or downhill, the connecting short beam rack 13 and the fixed segment beam rack 12 will have an angle. The tooth shape of the rack near the hinge of the connecting short beam 5 and the fixed segment beam 4 is modified to adapt to the uphill and downhill posture of the shield machine, so that it can mesh well with the segment crane gear 10 to avoid jamming. Similarly, the tooth shape of the rack near the hinge of the connecting short beam 5 and the floating segment beam 6 is also modified.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A segment crane beam structure suitable for horizontal turning with a large slope and a small curve, comprising a segment crane beam (3) and a segment crane moving on the segment crane beam (3), characterized in that: The segment crane is provided with a moving force acting member, and the segment crane beam (3) is provided with a moving force supporting member, and the moving force acting member and the moving force supporting member are used to transmit the moving force of the segment crane; The moving force acting member is a gear (10), the moving force supporting member is a rack (11), the driving device (7) drives the gear (10), the rack (11) is fixed on the segment crane beam (3), and the gear (10) is meshed with the rack (11); The segment crane is provided with a traveling wheel (8), the segment crane beam (3) is provided with a track (9), and the traveling wheel (8) travels on the track (9); The segment crane beam (3) comprises at least two sections, two adjacent sections are movably connected, and the teeth of the rack (11) located at the connection between the two sections of the segment crane beam (3) are modified teeth; The feature is that the segment crane beam (3) comprises a fixed segment beam (4), a connecting short beam (5) and a floating segment beam (6); the fixed segment beam (4) is movably connected to the connecting short beam (5); and the connecting short beam (5) is movably connected to the floating segment beam (6); The fixed segment beam (4) is arranged on the connecting bridge (1), the floating segment beam (6) is arranged on the trailer (2), and the connecting bridge (1) and the trailer (2) are movably connected; The fixed segment beam (4) and the floating segment beam (6) are both connected to the movable part via a pin shaft I (15), and the movable part is connected to the connecting short beam (5) via a pin shaft II (16) and a joint bearing (17); when the shield machine turns horizontally, the segment crane can smoothly pass through the crane beam segment and prevent movement due to track gaps.

2. The segment crane beam structure suitable for horizontal turning with large slope and small curve according to claim 1 is characterized in that: The segment crane is provided with a driving device (7), and the driving device (7) drives the moving force acting member to move.

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