Trestle bridge facilitating earthwork transportation

Abstract

The utility model discloses a trestle convenient to transport earthwork, which relates to the technical field of foundation pit transportation, and comprises a foundation pit, a trestle body and trestle pillars, the trestle body is arranged on the foundation pit, the trestle pillars are arranged at the bottom of the trestle body, the trestle pillars are arranged on the foundation pit, a support is arranged on the trestle body, and the trestle pillars are arranged on the support. The spiral conveying mechanism is arranged and mounted on the hopper, so that soil in the hopper can be downwards and spirally conveyed, earthwork in the hopper can smoothly fall into an earthwork vehicle below, and the situation that the earthwork is accumulated at a discharging opening of the hopper, blockage is caused, and the transportation efficiency is affected is avoided; by arranging the unloading baffle and the electric telescopic rod, the electric telescopic rod can drive the unloading baffle to close the discharging port of the hopper in the time period of alternate loading of the front earthwork transport vehicle and the rear earthwork transport vehicle, residual earth in the hopper is prevented from falling onto a trestle, meanwhile, non-stop conveying of the shaftless spiral conveyor can be achieved, and earthwork transport efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit transportation, in particular to a trestle bridge which is convenient for transporting earthwork. Background Art

[0002] With the development of urban construction, deep foundation pit projects are becoming more and more common in new construction and reconstruction projects. Deep foundation pit excavation is a complex and critical construction process, in which earthwork transportation and processing are one of the links that cannot be ignored. When transporting earthwork in the foundation pit, trestles are often set up. By setting up trestles, the conditions for earthwork transportation can be greatly improved, the efficiency of earthwork excavation and transportation can be improved, and the construction period can be shortened.

[0003] After searching, patent authorization announcement number CN 216586123 U discloses a trestle for transporting earth for deep foundation pit excavation, which records "foundation pit; trestle structure, the trestle structure is installed on the surface of the foundation pit, the trestle structure includes support columns, a trestle body and pads, the support columns are installed inside the foundation pit, and the pads are installed at both ends of the trestle body; aggregate structure, the aggregate structure is fixed to the edge of the trestle body surface; protection structure, the protection structure is installed inside the foundation pit; power structure, the power structure is fixed to the side wall of the collecting box; transportation structure, the transportation structure is installed on the side wall of the transmission gear." However, during the use of the above-mentioned trestle, when the soil blocks in the transported soil are large, the soil in the funnel is easily blocked at the discharge port, resulting in failure to discharge the material normally, affecting the efficiency of earth transportation. Utility Model Content

[0004] The purpose of the utility model is to provide a trestle bridge which is convenient for transporting earthwork, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A trestle bridge convenient for transporting earthwork comprises a foundation pit, a trestle bridge body and trestle pillars, the trestle bridge body is arranged on the foundation pit, the trestle pillars are installed at the bottom of the trestle bridge body, the trestle pillars are arranged on the foundation pit, a bracket is installed on the trestle bridge body, a hopper is installed on the bracket, a fixing frame is installed on the hopper, a screw conveying mechanism is installed on the fixing frame, the screw conveying mechanism comprises a motor, a conveying shaft and a spiral blade, the motor is installed on the fixing frame, the output shaft at the bottom of the motor is connected to the top of the conveying shaft through a coupling, the conveying shaft is installed with a spiral blade, a discharge baffle is arranged at the bottom discharge port of the hopper, a hinge is installed at the rear of the discharge baffle, the discharge baffle is hinged to the hopper through the hinge, an electric telescopic rod is arranged on the discharge baffle and one side of the hopper, the fixed end of the electric telescopic rod is hinged to the hopper, and the piston end of the electric telescopic rod is hinged to the discharge baffle.

[0007] As a further solution of the utility model: shaftless screw conveyors are arranged on both sides of the trestle bridge body, and the bottom and top of the shaftless screw conveyors are respectively arranged on the bottom of the foundation pit and the hopper.

[0008] As a further solution of the utility model: a conveyor bracket is installed on one side of the shaftless screw conveyor, and the shaftless screw conveyor is tiltedly arranged in the foundation pit through the conveyor bracket.

[0009] As a further solution of the utility model: a switch is installed on the bracket, the switch is electrically connected to the electric telescopic rod and the motor, and the switch is externally connected to a power source.

[0010] As a further solution of the utility model: a transparent observation window is provided on the side of the hopper.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The utility model provides a spiral conveying mechanism, which is installed on the hopper, and can spirally convey the soil in the hopper downward, so that the soil in the hopper can fall smoothly into the earth-moving vehicle below, avoiding the accumulation of soil at the hopper outlet to cause blockage and affect the transportation efficiency.

[0013] 2. The utility model is provided with a discharge baffle and an electric telescopic rod. During the period when the front and rear earth-moving transport vehicles are alternately loaded, the electric telescopic rod can drive the discharge baffle to close the hopper outlet to prevent the remaining earth in the hopper from falling onto the trestle. At the same time, the shaftless screw conveyor can be transported without stopping, thereby improving the earth-moving transportation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front cross-sectional view of a trestle bridge that is convenient for transporting earth.

[0015] Figure 2 A side profile of a trestle bridge that is convenient for transporting earth.

[0016] Figure 3 This is a cross-sectional view of the partial structure of a trestle bridge that is convenient for transporting earth.

[0017] Figure 4 A trestle bridge that is convenient for transporting earth Figure 1 A magnified view of the structure at center.

[0018] 1. Foundation pit; 2. Trestle bridge body; 3. Trestle pillar; 4. Bracket; 5. Hopper; 6. Fixed frame; 7. Screw conveyor mechanism; 701. Motor; 702. Conveying shaft; 703. Spiral blade; 8. Discharge baffle; 9. Electric telescopic rod; 10. Hinge; 11. Shaftless screw conveyor; 12. Switch; 13. Conveyor bracket. DETAILED DESCRIPTION

[0019] 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.

[0020] See also Figure 1-3 In the embodiment of the utility model, a trestle bridge for transporting earthwork includes a foundation pit 1, a trestle bridge body 2 and a trestle bridge pillar 3. The trestle bridge body 2 is arranged on the foundation pit 1, and the trestle bridge body 2 is installed with the trestle bridge pillar 3 at the bottom. The trestle bridge pillar 3 is arranged on the foundation pit 1. The trestle bridge body 2 is installed with a bracket 4, and a hopper 5 is installed on the bracket 4. The hopper 5 is installed with a fixed frame 6, and a spiral conveying mechanism 7 is installed on the fixed frame 6. The spiral conveying mechanism 7 includes a motor 701, a conveying shaft 702 and a spiral blade 703. The motor 701 is installed on the fixed frame 6, the output shaft at the bottom of the motor 701 is connected to the top of the conveying shaft 702 through a coupling, the conveying shaft 702 is installed with a spiral blade 703, and shaftless screw conveyors 11 are arranged on both sides of the trestle bridge body 2. The bottom and top of the shaftless screw conveyor 11 are respectively arranged at the bottom of the foundation pit 1 and the hopper 5. A conveyor bracket 13 is installed on one side of the shaftless screw conveyor 11, and the shaftless screw conveyor 11 is tilted in the foundation pit 1 through the conveyor bracket 13.

[0021] See also Figure 1 and Figure 4 A discharge baffle 8 is provided at the bottom discharge port of the hopper 5, and a hinge 10 is installed at the rear of the discharge baffle 8. The discharge baffle 8 is hinged to the hopper 5 through the hinge 10. An electric telescopic rod 9 is provided on one side of the discharge baffle 8 and the hopper 5. The fixed end of the electric telescopic rod 9 is hinged to the hopper 5, and the piston end of the electric telescopic rod 9 is hinged to the discharge baffle 8.

[0022] See also Figure 2 A switch 12 is installed on the bracket 4, the switch 12 is electrically connected to the electric telescopic rod 9 and the motor 701, the switch 12 is externally connected to a power source, and the switch 12 is arranged on a side close to the cab, so that the driver in the cab can control the unloading through the switch 12 in the cab.

[0023] See also Figure 1 A transparent observation window 14 is provided on the side of the hopper 5. The transparent observation window 14 can facilitate personnel to observe the material level in the hopper 5 and prevent soil from overflowing from the hopper 5.

[0024] The working principle of the utility model is:

[0025] When in use, the earth in the foundation pit 1 is transported upward to the hopper 5 through the shaftless screw conveyor 11. When the earth transport vehicle drives onto the trestle and reaches directly below the hopper 5, the motor 701 and the electric telescopic rod 9 are turned on by the switch 12. The electric telescopic rod 9 extends to push the unloading baffle 8 to rotate so that the discharge port is opened. At the same time, the motor 701 drives the spiral blade 703 to rotate through the conveying shaft 702. The earth in the hopper 5 will move downward driven by the spiral blade 703 and be discharged from the discharge port to the earth transport vehicle below. When the earth transport vehicle is full, the motor 701 and the electric telescopic rod 9 are turned off by the switch 12. The electric telescopic rod 9 contracts and drives the unloading baffle 8 to close the discharge port.

[0026] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A trestle bridge for transporting earthwork, comprising a foundation pit (1), a trestle bridge body (2) and trestle bridge pillars (3), wherein the trestle bridge body (2) is arranged on the foundation pit (1), the trestle bridge body (2) is installed at the bottom of the trestle bridge body (2), and the trestle bridge pillars (3) are arranged on the foundation pit (1), characterized in that: The trestle bridge body (2) is provided with a bracket (4), the bracket (4) is provided with a hopper (5), the hopper (5) is provided with a fixed frame (6), the fixed frame (6) is provided with a screw conveying mechanism (7), the screw conveying mechanism (7) comprises a motor (701), a conveying shaft (702) and a spiral blade (703), the motor (701) is provided with the fixed frame (6), the output shaft at the bottom of the motor (701) is connected to the top of the conveying shaft (702) through a coupling, A spiral blade (703) is installed on the conveying shaft (702), a discharge baffle (8) is arranged at the bottom discharge port of the hopper (5), a hinge (10) is installed at the rear of the discharge baffle (8), the discharge baffle (8) is hinged to the hopper (5) through the hinge (10), an electric telescopic rod (9) is arranged on one side of the discharge baffle (8) and the hopper (5), the fixed end of the electric telescopic rod (9) is hinged to the hopper (5), and the piston end of the electric telescopic rod (9) is hinged to the discharge baffle (8).

2. A trestle bridge for transporting earthwork according to claim 1, characterized in that: A shaftless screw conveyor (11) is arranged on both sides of the trestle bridge body (2), and the bottom and top of the shaftless screw conveyor (11) are arranged on the bottom of the foundation pit (1) and on the hopper (5) respectively.

3. A trestle bridge for transporting earthwork according to claim 2, characterized in that: A conveyor support (13) is installed on one side of the shaftless screw conveyor (11), and the shaftless screw conveyor (11) is tiltedly arranged in the foundation pit (1) through the conveyor support (13).

4. A trestle bridge for transporting earthwork according to claim 1, characterized in that: A switch (12) is installed on the bracket (4); the switch (12) is electrically connected to the electric telescopic rod (9) and the motor (701); and the switch (12) is externally connected to a power source.

5. A trestle bridge for transporting earthwork according to claim 1, characterized in that: A transparent observation window (14) is provided on the side of the hopper (5).

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