48-meter hydraulic inverted arch trestle for tunnel construction

Abstract

The 48-meter hydraulic inverted arch trestle for tunnel construction comprises a main bridge and approach bridges arranged at the two ends of the main bridge, the main bridge comprises two sets of lower-layer main bridge bodies arranged in parallel and an upper-layer main bridge body arranged on the lower-layer main bridge bodies, and the two sets of lower-layer main bridge bodies are connected through a connecting beam. The lower-layer main bridge and the upper-layer main bridge are spliced in a staggered joint mode, walking mechanisms are arranged at the two ends of the lower-layer main bridge, a transverse moving mechanism for driving the main bridge to transversely move is arranged at the position, close to the walking mechanisms, of the lower-layer main bridge, and four evenly-distributed hydraulic supporting legs are arranged in the middle of the lower-layer main bridge. According to the 48-meter hydraulic inverted arch trestle for tunnel construction, the number of construction stations below the trestle is large, two sets of formworks can be hung, and the construction progress is accelerated by achieving simultaneous construction of the two stations; in addition, the auxiliary approach bridge can rotate corresponding to the main approach bridge, can better adapt to tunnels with turns, and is convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of inverted arch trestle bridges, in particular to a 48-meter hydraulic inverted arch trestle bridge for tunnel construction. Background Art

[0002] The inverted arch trestle is a temporary trestle used in tunnel construction. During the tunnel construction process, after the tunnel bottom is excavated, the trestle is erected on the inverted arch to facilitate the construction of the lower inverted arch while ensuring that the excavation surface construction machinery can move forward in parallel and ensure that the excavation surface construction can be carried out in an orderly manner, thereby improving the efficiency of the construction.

[0003] At present, the existing trestles on the market are only 36m and 24m models. The disadvantage is that only one set of templates can be hung, there are few construction stations under the trestles, and the construction progress is slow. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a 48-meter hydraulic inverted arch trestle for tunnel construction. There are many construction stations under the trestle, and two sets of templates can be hung. The construction progress is accelerated by realizing simultaneous construction of two stations. In addition, the auxiliary approach bridge can rotate relative to the main approach bridge, can better adapt to tunnels with turns, is easy to use, and can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a 48-meter hydraulic inverted arch trestle for tunnel construction, comprising a main bridge and approach bridges arranged at both ends of the main bridge, the main bridge comprising two groups of lower main bridges arranged in parallel and an upper main bridge arranged on the lower main bridges, the two groups of lower main bridges are connected by connecting beams, and the lower main bridges and the upper main bridges are staggered and spliced.

[0006] Both ends of the lower main bridge are provided with walking mechanisms, a lateral movement mechanism for driving the main bridge to move horizontally is provided near the walking mechanism, and four evenly distributed hydraulic legs are provided in the middle of the lower main bridge.

[0007] The approach bridge comprises a main approach bridge connected to the lower main bridge for vertical rotation, and an auxiliary approach bridge connected to the main approach bridge for horizontal rotation. The main approach bridge is provided with an approach bridge transverse displacement cylinder for driving the auxiliary approach bridge for rotation.

[0008] As a preferred technical solution of the utility model, a lifting cylinder for controlling the lifting of a traveling mechanism is provided at the bottom of the lower main bridge, and the traveling mechanism includes a traveling wheel installed at the bottom of the lifting cylinder, and the traveling wheel is driven by a hydraulic motor.

[0009] As a preferred technical solution of the utility model, the transverse movement mechanism includes a transverse movement bracket and a transverse movement slide installed at the bottom of the lower main bridge. The transverse movement slide is slidably arranged on the transverse movement bracket, and the transverse movement bracket is provided with a transverse movement cylinder for driving the transverse movement slide to move.

[0010] As a preferred technical solution of the utility model, both ends of the upper main bridge are provided with traction cylinders for pulling the main approach bridge to rotate up and down.

[0011] As a preferred technical solution of the utility model, there are two main approach bridges and two auxiliary approach bridges at both ends of the main bridge, and an approach bridge connecting beam is connected between the two main approach bridges.

[0012] As a preferred technical solution of the utility model, a bridge approach cover is provided between the two main approach bridges.

[0013] As a preferred technical solution of the utility model, the bottom of the main approach bridge and the auxiliary approach bridge are both provided with approach bridge legs.

[0014] As a preferred technical solution of the utility model, a connecting rod is provided between the two auxiliary approach bridges, and the two auxiliary approach bridges are rotatably connected to the connecting rod.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model exemplifies a 48-meter hydraulic inverted arch trestle for tunnel construction. There are many construction stations under the trestle, and two sets of templates can be hung. The construction progress is accelerated by realizing simultaneous construction at two stations. In addition, the auxiliary approach bridge can rotate relative to the main approach bridge, which can better adapt to tunnels with turns and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the top view structure of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the main bridge in the utility model;

[0020] Figure 4 for Figure 1 Schematic diagram of the local structure;

[0021] Figure 5 for Figure 2 Schematic diagram of the local structure;

[0022] Figure 6 for Figure 2 Schematic diagram of the middle structure;

[0023] Figure 7 It is a schematic cross-sectional structure diagram of the hydraulic outrigger in the utility model;

[0024] Figure 8 This is a schematic diagram of the structure of the transverse movement mechanism in the utility model;

[0025] Fig. 9 It is a schematic diagram of the structure of the walking mechanism in the utility model.

[0026] In the figure: 1 lower main bridge, 2 connecting beam, 3 upper main bridge, 31 traction cylinder, 4 main approach bridge, 41 approach bridge connecting beam, 42 approach bridge cover, 43 approach bridge transverse cylinder, 44 approach bridge support leg, 5 auxiliary approach bridge, 51 connecting rod, 6 hydraulic support leg, 7 lifting cylinder, 71 walking mechanism, 8 transverse support bracket, 81 transverse cylinder, 82 transverse slide. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-9 The utility model provides a technical solution: a 48-meter hydraulic inverted arch trestle for tunnel construction, comprising a main bridge and approach bridges arranged at both ends of the main bridge, the main bridge is an inverted arch structure, the main bridge comprises two sets of lower main bridges 1 arranged in parallel and an upper main bridge 3 arranged on the lower main bridge 1, the two sets of lower main bridges 1 are connected by a connecting beam 2, and the lower main bridge 1 and the upper main bridge 3 are staggered and spliced, and the lower main bridge 1 can be used as a driving lane.

[0029] Both ends of the lower main bridge 1 are provided with a walking mechanism 71. A lateral movement mechanism for driving the main bridge to move horizontally is provided near the walking mechanism of the lower main bridge 1. Four evenly distributed hydraulic legs 6 are provided in the middle of the lower main bridge 1 to support the middle part of the pier, thereby improving the entire bearing capacity of the pier.

[0030] The approach bridge comprises a main approach bridge 4 connected to the lower main bridge 1 for vertical rotation, and an auxiliary approach bridge 5 connected to the main approach bridge 4 for horizontal rotation. The main approach bridge 4 is provided with an approach bridge transverse displacement cylinder 43 for driving the auxiliary approach bridge 5 to rotate.

[0031] Both the main approach bridge 4 and the secondary approach bridge 5 are provided with guardrails.

[0032] The secondary approach bridge 5 is rotatably connected to the main approach bridge 4 via a pin, so as to facilitate the rotation of the secondary approach bridge 5 .

[0033] Furthermore, a lifting cylinder 7 for controlling the lifting and lowering of a traveling mechanism 71 is provided at the bottom of the lower main bridge 1. The traveling mechanism 71 includes a traveling wheel installed at the bottom of the lifting cylinder 7. The traveling wheel is driven by a hydraulic motor to control the extension of the lifting cylinder 7. The lifting cylinder 7 drives the traveling mechanism 71 downward, thereby lifting the trestle. The traveling wheel is then driven to move by the hydraulic motor, and the traveling wheel drives the trestle to move.

[0034] Furthermore, the transverse mechanism includes a transverse bracket 8 and a transverse slide 82 installed at the bottom of the lower main bridge 1. The transverse slide 82 is slidably set on the transverse bracket 8. The transverse bracket 8 is provided with a transverse cylinder 81 for driving the transverse slide 82 to move. The transverse cylinder 81 is controlled to work, and the transverse cylinder 81 drives the transverse slide 82 to move on the transverse bracket 8. The transverse slide 82 drives the trestle to move a short distance along its width direction.

[0035] Furthermore, both ends of the upper main bridge are provided with traction cylinders 31 for pulling the main approach bridge 4 to rotate up and down. By controlling the traction cylinders 31 to shorten, the traction cylinders 31 drive the main approach bridge 4 to flip upward, and the main approach bridge 4 drives the auxiliary approach bridge 5 to flip upward, thereby making the main approach bridge 4 and the auxiliary approach bridge 5 leave the ground.

[0036] Furthermore, there are two main approach bridges 4 and two auxiliary approach bridges 5 at both ends of the main bridge, and an approach bridge connecting beam 41 is connected between the two main approach bridges 4, which can improve the stability of the connection of the main approach bridges 4.

[0037] Furthermore, a bridge approach cover 42 is provided between the two main bridge approaches 4 .

[0038] Furthermore, the bottom of the main approach bridge 4 and the auxiliary approach bridge 5 are both provided with approach bridge legs 44 to play a supporting role, thereby improving the bearing capacity of the approach bridge.

[0039] Furthermore, a connecting rod 51 is provided between the two auxiliary approach bridges 5 , and the two auxiliary approach bridges 5 are rotatably connected to the connecting rod 51 .

[0040] When using:

[0041] 1. Steering adjustment of auxiliary approach bridge 5:

[0042] Control the bridge transverse movement cylinder 43 to work, and the bridge transverse movement cylinder 43 pushes the auxiliary bridge 5 to turn, so that the entire trestle can better adapt to the turning tunnel;

[0043] 2. Suspension of approach bridge:

[0044] The traction cylinder 31 is controlled to shorten, and the traction cylinder 31 drives the main approach bridge 4 to flip upward, and the main approach bridge 4 drives the auxiliary approach bridge 5 to flip upward, so that the main approach bridge 4 and the auxiliary approach bridge 5 leave the ground;

[0045] 3. The movement of the trestle:

[0046] The lifting cylinder 7 is controlled to extend, and the lifting cylinder 7 drives the walking mechanism 71 to move downward, thereby lifting the trestle, and then the hydraulic motor drives the walking wheel to move, and the walking wheel drives the trestle to move;

[0047] 4. Overall translation of the trestle:

[0048] First, the approach bridge is suspended to be off the ground by using the approach bridge suspension method, and the hydraulic legs 6 are controlled to shorten. At this time, only the transverse support 8 supports the trestle.

[0049] The transverse oil cylinder 81 is controlled to work, and the transverse oil cylinder 81 drives the transverse slide 82 to move on the transverse bracket 8, and the transverse slide 82 drives the trestle to move a short distance along its width direction.

[0050] The utility model has many construction stations under the trestle, and two sets of templates can be hung, so that the construction progress can be accelerated by realizing simultaneous construction of two stations; in addition, the auxiliary approach bridge 5 can rotate corresponding to the main approach bridge 4, can better adapt to tunnels with turns, and is easy to use.

[0051] The undisclosed parts in the present utility model are all prior art, and their specific structures, materials and working principles are not described in detail. Although the embodiments of the present utility model have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the attached claims and their equivalents.

Claims

1. A 48-meter hydraulic inverted arch trestle for tunnel construction, comprising a main bridge and approach bridges arranged at both ends of the main bridge. Features: The main bridge comprises two sets of lower main bridges (1) arranged in parallel and an upper main bridge (3) arranged on the lower main bridges (1); the two sets of lower main bridges (1) are connected by a connecting beam (2), and the lower main bridges (1) and the upper main bridge (3) are spliced ​​with staggered joints; Both ends of the lower main bridge (1) are provided with a walking mechanism (71), a lateral movement mechanism for driving the main bridge to move laterally is provided near the walking mechanism on the lower main bridge (1), and four evenly distributed hydraulic legs (6) are provided in the middle of the lower main bridge (1); The approach bridge comprises a main approach bridge (4) connected to the lower main bridge (1) for vertical rotation, and an auxiliary approach bridge (5) connected to the main approach bridge (4) for horizontal rotation. The main approach bridge (4) is provided with an approach bridge transverse displacement cylinder (43) for driving the auxiliary approach bridge (5) to rotate.

2. The 48-meter hydraulic inverted arch trestle for tunnel construction according to claim 1, Features: A lifting cylinder (7) for controlling the lifting of a traveling mechanism (71) is provided at the bottom of the lower main bridge (1); the traveling mechanism (71) comprises a traveling wheel mounted at the bottom of the lifting cylinder (7); the traveling wheel is driven by a hydraulic motor.

3. The 48-meter hydraulic inverted arch trestle for tunnel construction according to claim 1, Features: The transverse movement mechanism comprises a transverse movement bracket (8) and a transverse movement slide (82) installed at the bottom of the lower main bridge (1); the transverse movement slide (82) is slidably arranged on the transverse movement bracket (8); and the transverse movement bracket (8) is provided with a transverse movement cylinder (81) for driving the transverse movement slide (82) to move.

4. The 48-meter hydraulic inverted arch trestle for tunnel construction according to claim 1, Features: Both ends of the upper main bridge are provided with a traction cylinder (31) for traction of the main approach bridge (4) to rotate up and down.

5. The 48-meter hydraulic inverted arch trestle for tunnel construction according to claim 1, Features: There are two main approach bridges (4) and two auxiliary approach bridges (5) at both ends of the main bridge, and an approach bridge connecting beam (41) is connected between the two main approach bridges (4).

6. The 48-meter hydraulic inverted arch trestle for tunnel construction according to claim 5, Features: An approach bridge cover plate (42) is provided between the two main approach bridges (4).

7. The 48-meter hydraulic inverted arch trestle for tunnel construction according to claim 5, Features: The main approach bridge (4) and the auxiliary approach bridge (5) are both provided with approach bridge legs (44) at the bottom.

8. The 48-meter hydraulic inverted arch trestle for tunnel construction according to claim 1, Features: A connecting rod (51) is provided between the two auxiliary approach bridges (5), and the two auxiliary approach bridges (5) are both rotatably connected to the connecting rod (51).

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