Excavation trolley with telescopic working table top

Abstract

The excavation trolley comprises a base, a plurality of portal frames are arranged on the base from top to bottom, the length of the portal frame with the high horizontal height is larger than that of the portal frame with the low horizontal height, and the face, corresponding to the side wall of a tunnel, of each portal frame is provided with a length-adjustable working table. According to the utility model, the structure of the existing excavation trolley is improved, and the length-adjustable working tables are arranged on the two sides of the portal frame, so that the excavation trolley can adapt to the construction operation of tunnels with different section sizes, and further, the smooth transition from a double-side-wall construction method to a single-side-wall construction method can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to an excavation trolley with a retractable working surface. Background Art

[0002] During the operation of the excavation trolley, in order to achieve a smooth transition from the double-side wall construction method to the single-side wall construction method, the excavation trolley needs to change its position to adapt to tunnel construction operations under different cross-sectional sizes. The operation is complicated, time-consuming and inconvenient to use. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides an excavation trolley with a retractable working surface.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] An excavation trolley with a retractable working table comprises a base, on which a plurality of gantries are arranged from top to bottom, and the length of a gantries with a high horizontal height is greater than the length of a gantries with a low horizontal height. The gantry is provided with a length-adjustable working table on a surface corresponding to a tunnel side wall, and the length of the working table is adjusted to adapt to the construction of tunnels with different cross-sectional sizes, thereby realizing a smooth transition from a double-side wall construction method to a single-side wall construction method.

[0006] Preferably, the workbench includes a fixed seat fixed on the gantry, the fixed seat has an assembly groove, and a slidable support plate is provided in the assembly groove to achieve adjustable length.

[0007] Preferably, a reinforcing rod is provided between the fixing seat and the gantry to form a triangular frame, thereby improving the structural stability between the workbench and the gantry.

[0008] Preferably, the gantry is formed by welding I-beams and has high structural strength.

[0009] Compared with the prior art, the utility model has the following beneficial effects:

[0010] The utility model utilizes the structural improvement of the existing excavation trolley and arranges the length-adjustable working platform on both sides of the gantry so that the excavation trolley can adapt to the construction work of tunnels with different cross-sectional sizes, thereby realizing the smooth transition from the double-side wall construction method to the single-side wall construction method. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0012] Figure 2 It is a structural schematic diagram of a workbench of the utility model.

[0013] Figure symbols: 1. base, 2. gantry, 3. workbench, 31. fixed seat, 32. support plate, 4. reinforcement rod. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.

[0015] Example 1

[0016] like Figure 1 The excavation trolley with a retractable working table shown in the figure comprises a base 1, on which are arranged a plurality of gantries 2 from top to bottom, and the length of the gantries 2 with a high horizontal height is greater than the length of the gantries 2 with a low horizontal height, and the gantry 2 is provided with a length-adjustable working table 3 on the surface corresponding to the tunnel side wall. When transitioning from the double-side wall construction method to the single-side wall construction method, the excavation trolley can adapt to the tunnel construction work under different cross-sectional sizes by adjusting the length of the working table 3, thereby realizing a smooth transition from the double-side wall construction method to the single-side wall construction method.

[0017] In some embodiments, the base 1 is a movable base, which may be, but is not limited to, a wheeled frame or a truck.

[0018] Example 2

[0019] A specific structure of the open workbench 3 is as follows: Figure 2 As shown in the locking diagram, the workbench 3 includes a fixing seat 31 fixed on the gantry 2, the fixing seat 31 has an assembly groove, and a slidable supporting plate 32 is provided in the assembly groove.

[0020] As a preferred solution of the above embodiment, a reinforcing rod 4 is provided between the fixing seat 31 and the gantry 2 to form a triangular skeleton, thereby improving the bearing capacity of the workbench 3 .

[0021] As a preferred solution of the above embodiment, the gantry 2 is formed by welding I-beams.

[0022] Of course, the present invention may have many other implementation modes. Without departing from the spirit and essence of the present invention, technicians familiar with the field may make various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. An excavation trolley with a retractable working surface, characterized in that: The invention comprises a base (1), wherein a plurality of gantries (2) are arranged on the base (1) from top to bottom, wherein the length of the gantries (2) with a higher horizontal height is greater than the length of the gantries (2) with a lower horizontal height, and the gantries (2) are provided with a length-adjustable working platform (3) on the surface corresponding to the tunnel side wall.

2. The excavation trolley with a retractable working surface according to claim 1, characterized in that: The workbench (3) comprises a fixing seat (31) fixed on the gantry (2); the fixing seat (31) has an assembly groove, and a slidable supporting plate (32) is arranged in the assembly groove.

3. The excavation trolley with a retractable working surface according to claim 2, characterized in that: A reinforcing rod (4) is provided between the fixing seat (31) and the gantry (2) to form a triangular frame.

4. The excavation trolley with a retractable working surface according to claim 1, characterized in that: The gantry (2) is formed by welding I-beams.

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