Tunnel construction trestle capable of crossing obstacles

Abstract

The utility model relates to a tunnel construction trestle bridge capable of crossing obstacles, which comprises a trestle bridge main body, a moving trolley is connected onto the trestle bridge main body, front jacking mechanisms are arranged on two sides of the front end of the trestle bridge main body, rear jacking mechanisms and walking rollers are arranged on two sides of the rear end of the trestle bridge main body, and supporting legs capable of ascending and descending are respectively arranged on two sides of the moving trolley. A driving mechanism for driving the moving trolley and the trestle main body to move mutually is connected between the moving trolley and the trestle main body; acting force is applied to one end of the trestle main body through engineering machinery, so that the gravity center of the trestle main body is kept balanced on the moving trolley, and the driving mechanism drives the trestle main body to walk on the trolley and drives the walking rollers to cross obstacles.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tunnel construction equipment technical field, concretely relates to a tunnel construction trestle bridge that can cross the obstacle. BACKGROUND

[0002] Tunnel inverted arch trestle bridge is the equipment that can speed up construction progress for solving inverted arch construction and the interference problem of face construction passing vehicle. In prior art, when moving the trestle bridge, generally drive the walking wheel arranged at one end of the trestle bridge to act and drive the main bridge to move, but in use, the trestle bridge walking wheel needs to cross the gully and other obstacles in a small range according to actual conditions or needs to move on the operation surface without the support of the trestle bridge walking wheel according to the actual demand of construction, at this time, the trestle bridge needs to move, but the walking wheel of the trestle bridge cannot contact the support surface and walk, so the existing trestle bridge moving mechanism cannot meet the demand of crossing the obstacle or moving on the operation surface without passing, and the use limitation is relatively large. SUMMARY

[0003] The utility model aims at overcoming the insufficient of prior art, and provides a tunnel construction trestle bridge that can cross the obstacle.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A tunnel construction trestle bridge that can cross the obstacle, comprising a trestle bridge main body, a moving trolley is connected to the trestle bridge main body, front jacking mechanisms are arranged on the both sides of the front end of the trestle bridge main body, rear jacking mechanisms and walking rollers are arranged on the both sides of the rear end of the trestle bridge main body, liftable support legs are arranged on the both sides of the moving trolley respectively, and a driving mechanism for driving mutual movement is connected between the moving trolley and the trestle bridge main body.

[0006] Further, when the driving mechanism works, the moving trolley support leg supports the trestle bridge main body, an external force is applied to one end of the trestle bridge main body, so that the center of gravity of the trestle bridge main body on the moving trolley is balanced, the driving mechanism drives the trestle bridge main body to walk on the trolley and drives the walking roller to cross the obstacle off the ground, the external force is applied to the side of the short force arm of the trestle bridge main body with the moving trolley as the fulcrum by the engineering machinery or to the side of the long force arm of the trestle bridge main body, the external force is applied to the side of the short force arm of the trestle bridge main body with the moving trolley as the fulcrum by the engineering machinery or to the side of the long force arm of the trestle bridge main body.

[0007] Further, at least one side of the moving trolley is provided with a flow guide groove for guiding the concrete; the moving trolley is provided with an adjusting mechanism for adjusting the flow direction of the flow guide groove; the adjusting mechanism comprises a support frame, a central support rod, a pitch cylinder and a swing cylinder, the support frame is fixed to the side of the moving trolley, the central support rod is rotatably sleeved on the sleeve of the support frame, and the inclined frame at the upper end of the central support rod is hinged to the middle part of the bottom surface of the flow guide groove; the lower end of the pitch cylinder is hinged to the lower end of the central support rod, and the upper end of the pitch cylinder is hinged to the lower end or the upper end of the bottom surface of the flow guide groove for driving the pitch of the flow guide groove; the two ends of the swing cylinder are respectively hinged to the supporting lug of the support frame and the central support rod for driving the swing of the flow guide groove in the horizontal plane.

[0008] Further, the bottom of the supporting leg is rotatably connected with a movable foot.

[0009] Further, the trestle body comprises box girders on both sides and a cross beam between the two box girders, and a panel is laid on the cross beam.

[0010] Further, the driving mechanism comprises a hydraulic motor fixed on the moving trolley, a driving gear is fixed to the output end of the hydraulic motor, and a rack is fixed on the trestle body along the length direction, and the rack is engaged with the driving gear.

[0011] Further, the rack is fixed to the inner side of the side box girder of the trestle body.

[0012] Further, both sides of the moving trolley are respectively provided with an upper hanging wheel and a lower dragging wheel matched with the trestle body, the upper hanging wheel is rollingly connected to the guide rail above the trestle body, and the lower dragging wheel is rollingly connected to the guide rail below the trestle body.

[0013] Further, the front end of the trestle body is rotatably connected with a front leading bridge, and the front leading bridge is driven to turn over by a front turning over cylinder; the rear end of the trestle body is rotatably connected with a rear leading bridge, and the rear leading bridge is driven to turn over by a rear turning over cylinder.

[0014] By adopting the technical scheme, the trestle has the beneficial effects that:

[0015] 1. On the basis of the basic functions of the existing trestle, the trestle can realize the crossing of small obstacles by the walking rollers, when crossing the obstacles, the engineering machinery (hook machine) applies pressure to the trestle according to the movement of the trestle, so that the center of gravity of the trestle is always balanced during the movement, and the trestle does not collapse due to imbalance, the trestle is completely supported by the moving trolley during the movement, and the hook machine dynamically assists the center of gravity balance, at this time, the walking rollers of the trestle completely leave the ground, which creates conditions for the walking rollers to cross small gullies and other obstacles, and the crossing operation can be repeated to realize the requirement that the trestle moves on the work surface without passing conditions.

[0016] 2. A concrete diversion channel is installed on the mobile trolley, which enables the mobile trolley to divert concrete, thereby reducing the number of construction equipment in the tunnel and not affecting the construction space inside the tunnel, making the construction of the invert more convenient; in addition, the diversion direction of the diversion channel can be adjusted by the adjustment mechanism, making it more flexible to use. Attached Figure Description

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the mobile cart.

[0020] Figure 3 This is a sectional view of the drive mechanism;

[0021] Figure 4 A simplified schematic diagram of the drive mechanism;

[0022] Figure 5 This is a schematic diagram of the cross-domain barrier of this utility model. Detailed Implementation

[0023] like Figures 1-3 As shown, this utility model discloses a tunnel construction trestle capable of crossing obstacles, comprising a trestle body 1. In this embodiment, the overall length of the trestle body 1 exceeds 27 meters but is less than 30 meters. The span of the trestle body 1 exceeds 24 meters. The trestle body 1 includes box girders on both sides and a crossbeam located between the two box girders, with panels laid on the crossbeam. In this embodiment, each side of the trestle body 1 is composed of three box girders connected by bolts. The frame of the trestle body 1 is assembled from box girders and crossbeams, which not only facilitates transportation and on-site assembly but also ensures the stability of the trestle body 1.

[0024] A mobile trolley 2 is connected to the main body 1 of the trestle bridge. Front lifting mechanisms 3 are located on both sides of the front end of the main body 1, and rear lifting mechanisms 4 and traveling rollers 5 are located on both sides of the rear end of the main body 1. Each side of the mobile trolley 2 has a height-adjustable support leg 21, and the bottom of the support leg 21 is rotatably connected to a movable foot 22. The movable foot 22 has adaptive adjustment capabilities, thus adapting to different support surfaces.

[0025] The driving mechanism for driving the mutual movement is connected between the moving trolley 2 and the trestle body 1, and has two driving mechanisms symmetrically arranged on both sides.

[0026] The moving trolley 2 is provided with an upper hanging wheel 25 and a lower dragging wheel 26 on both sides for cooperating with the trestle body 1. The upper hanging wheel 25 is connected to the guide rail 12 above the trestle body 1, and the lower dragging wheel 26 is connected to the guide rail 13 below the trestle body 1. The cooperation of the upper hanging wheel 25 and the lower dragging wheel 26 enables the moving trolley 2 to be guided in an up-down clamping manner on the trestle, and has high stability. Moreover, the gap between the gear and the rack 14 can be ensured, and the gear climbing phenomenon can be prevented.

[0027] When the front jacking mechanism 3 and the rear jacking mechanism 4 of the trestle body 1 are supported on the support surface, the driving mechanism drives the moving trolley 2 to move along the trestle body 1.

[0028] As shown in Figure 5 The trestle is used in cooperation with the engineering machinery. When the walking roller 5 of the trestle body 1 needs to cross the obstacle 10, such as a small gully, the moving trolley 2 is moved to the end of the trestle body 1 close to the walking roller 5, and then the bucket of the engineering machinery 11 (such as a hook machine) presses the end of the trestle body 1 close to the walking roller 5, and then the four supporting legs 21 on both sides of the front and rear ends of the moving trolley 2 are lowered and jacked up. At this time, the rear jacking mechanism 4 of the trestle body 1 and the walking roller 5 slightly leave the support surface, the supporting legs 21 of the moving trolley 2 are supported on the support surface, the driving gear 7 at the output end of the hydraulic motor 6 of the driving mechanism is engaged with the rack 14 on the trestle body 1 and rotates, the bucket of the engineering machinery 11 cooperates with the movement of the trestle body 1 to adjust the position and the size of the pressure counterweight, so as to move the trestle body 1 to the predetermined position, thereby driving the walking roller 5 to cross the obstacle 10. The above process is to balance the center of gravity of the trestle body 1 by pressing on the side of the trestle body 1 with a short force arm. Of course, the center of gravity of the trestle body 1 can also be balanced by lifting on the side of the trestle body 1 with a long force arm.

[0029] The hydraulic motor 6 is used as the driving mechanism, and the hydraulic motor 6 has very small inertia when it is stopped, so it can be stopped immediately and will not cause inertial impact on the gear and the rack, and the service life of the equipment is longer.

[0030] The mobile trolley 2 is provided with a flow guide groove 23 on at least one side, which is used for guiding the concrete; the mobile trolley 2 is provided with an adjusting mechanism 24 for adjusting the flow direction of the flow guide groove 23. Specifically, the adjusting mechanism 24 comprises a support frame 241, a center support rod 242, a pitch cylinder 243 and a swing cylinder 244, the support frame 241 is fixed on the side of the mobile trolley 2, the center support rod 242 is rotatably sleeved on the sleeve of the support frame 241, and the inclined frame at the upper end of the center support rod 242 is hinged to the middle part of the bottom surface of the flow guide groove 23; the lower end of the pitch cylinder 243 is hinged to the lower end of the center support rod 242, and the upper end of the pitch cylinder 243 is hinged to the lower end or the upper end of the bottom surface of the flow guide groove 23, which is used for driving the pitch of the flow guide groove 23; the two ends of the swing cylinder 244 are respectively hinged to the supporting lug of the support frame 241 and the center support rod 242, which is used for driving the swing of the flow guide groove 23 in the horizontal plane. The flow direction of the flow guide groove 23 can be adjusted through the adjusting mechanism 24, which is more flexible to use, and the construction operation is more convenient.

[0031] The front end of the trestle main body 1 is rotatably connected with a front guide bridge 8, the front guide bridge 8 is driven to overturn by a front overturning oil cylinder; the rear end of the trestle main body 1 is rotatably connected with a rear guide bridge 9, the rear guide bridge 9 is driven to overturn by a rear overturning oil cylinder. By arranging the front guide bridge 8 and the rear guide bridge 9 which can overturn, the engineering machinery can conveniently go up and down the trestle.

[0032] The above describes the specific implementation mode of the utility model, but those skilled in the art should understand that this is only an example, and those skilled in the art can make various changes or modifications to this implementation mode without departing from the principles and essence of the utility model, for example, when crossing obstacles, the mobile trolley 2 can be moved to the end of the trestle main body 1 close to the walking roller 5, then the end of the trestle main body 1 close to the walking roller 5 is held by the bucket of the engineering machinery 11 (such as a hook machine), so as to achieve the movement of the corresponding position and the adjustment of the size of the pressure counterweight force, so that the center of gravity of the trestle main body is balanced during the advancing process, but these changes and modifications all fall within the protection scope of the utility model.

Claims

1. A tunnel construction trestle capable of crossing obstacles, comprising a trestle body and a mobile trolley connected to the trestle body, characterized in that: The front two sides of the main body of the trestle are provided with front lifting mechanisms, the rear two sides of the main body of the trestle are provided with rear lifting mechanisms and traveling rollers, the two sides of the mobile trolley are respectively provided with lifting support legs, and the mobile trolley and the main body of the trestle are connected by a drive mechanism to drive each other to move; the construction trestle is used in conjunction with engineering machinery to drive the traveling rollers off the ground to cross obstacles.

2. A tunnel construction trestle bridge capable of crossing obstacles according to claim 1, characterized in that: When the drive mechanism is working, the supporting legs of the mobile trolley support the main body of the trestle on the ground, and an external force is applied to one end of the main body of the trestle so that the main body of the trestle maintains the center of gravity balance on the mobile trolley. The drive mechanism drives the main body of the trestle to move on the trolley and drives the walking rollers to lift off the ground to cross obstacles. The applied external force is either pressure applied by the engineering machinery on the side of the trestle main body with the mobile trolley as the fulcrum, which is shorter, or lifting on the side of the trestle main body with longer lever arm.

3. A tunnel construction trestle bridge capable of crossing obstacles according to claim 1, characterized in that: The mobile trolley has a guide channel on at least one side for guiding concrete flow. The mobile trolley is equipped with an adjustment mechanism for adjusting the flow direction of the guide channel. The adjustment mechanism includes a support frame, a central support rod, a pitch cylinder, and a swing cylinder. The support frame is fixed to the side of the mobile trolley, and the central support rod is rotatably sleeved on the sleeve of the support frame. The inclined frame at the upper end of the central support rod is hinged to the center of the bottom surface of the guide channel. The lower end of the pitch cylinder is hinged to the lower end of the central support rod, and the upper end of the pitch cylinder is hinged to the lower or upper end of the bottom surface of the guide channel, for driving the pitch of the guide channel. The two ends of the swing cylinder are respectively hinged to the lugs of the support frame and the central support rod, for driving the guide channel to swing in the horizontal plane.

4. A tunnel construction trestle bridge capable of crossing obstacles according to claim 3, characterized in that: The bottom of the support leg is rotatably connected to a movable foot.

5. A tunnel construction trestle bridge capable of crossing obstacles according to claim 1, characterized in that: The main body of the trestle bridge includes box girders on both sides and a crossbeam between the two box girders, with panels laid on the crossbeam.

6. A tunnel construction trestle bridge capable of crossing obstacles according to claim 1, characterized in that: The drive mechanism includes a hydraulic motor fixed on a mobile trolley, a drive gear fixed at the output end of the hydraulic motor, and a rack fixed along the length of the main body of the trestle, which meshes with the drive gear.

7. A tunnel construction trestle bridge capable of crossing obstacles according to claim 6, characterized in that: The rack is fixed to the inner side of the box girder on the side of the main body of the trestle bridge.

8. A tunnel construction trestle bridge capable of crossing obstacles according to claim 1 or 6, characterized in that: The mobile trolley is equipped with upper hanging wheels and lower drag wheels on both sides, which cooperate with the main body of the trestle. The upper hanging wheels are rolled and connected to the guide rail above the main body of the trestle, and the lower drag wheels are rolled and connected to the guide rail below the main body of the trestle.

9. A tunnel construction trestle bridge capable of crossing obstacles according to claim 1, characterized in that: The front end of the main body of the trestle is rotatably connected to a front approach bridge, which is driven to rotate by a front tilting cylinder; the rear end of the main body of the trestle is rotatably connected to a rear approach bridge, which is driven to rotate by a rear tilting cylinder.

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