Gantry lifting device for secondary lining trolley

Abstract

A portal frame lifting device for a secondary lining trolley comprises a portal frame, an arc-shaped formwork, stand columns, a bottom beam, an auxiliary beam, a supporting beam and a hydraulic rod, the portal frame is arranged on the upper portion of the trolley, the arc-shaped formwork is arranged outside the portal frame and matched with the inner wall of a tunnel, the stand columns are arranged at the four corners of the portal frame, and the auxiliary beam is arranged on the bottom beam. Bottom beams are connected to the bottoms of the two stand columns located on the same side, auxiliary beams are arranged on the upper portions of the bottom beams in parallel, the two ends of the auxiliary beams are connected with the stand columns, supporting beams parallel to the bottom beams are arranged in the middle of the door-shaped frame at intervals, and hydraulic rods are arranged between the supporting beams and the bottom beams. The utility model has the beneficial effects that the device is simple in structure and convenient to use, can cope with a complicated section in a tunnel by adjusting the height of the portal frame, is strong in generality, ensures the safety of the trolley through the arrangement of the auxiliary beam, and reduces the labor intensity of operators.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel construction equipment, and in particular relates to a door frame lifting device for a secondary lining trolley. Background Art

[0002] Among the existing tunnel construction equipment, the secondary lining trolley is one of the key equipment, which is mainly used for formwork support and pouring processes. In tunnel construction, it is often encountered that some tunnels have complex cross-sections and different heights of the cross-sections. If the height difference is small, it can be solved by adding a heightening box to the secondary lining trolley. If the height difference is large, the bottom beam of the trolley needs to be raised, which will cause the bottom beam to be too high from the road surface and safety is difficult to ensure. In order to ensure safety, a bottom beam needs to be installed under the trolley. It is difficult to install a bottom beam under the trolley. On the one hand, the space in the tunnel is limited. On the other hand, the weight of the bottom beam is too large and the labor intensity of the operators is high. Therefore, other solutions are needed to solve this problem. Utility Model Content

[0003] In view of the shortcomings of the prior art, the purpose of the utility model is to design a gantry lifting device for a secondary lining trolley to solve the problem mentioned in the background technology that the tunnel section is complex and there are many height differences in the section, while also ensuring the safety of the operation.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a gantry lifting device for a secondary lining trolley, comprising a gantry, an arc-shaped template, a column, a bottom beam, an auxiliary beam, a support beam and a hydraulic rod, wherein the gantry is arranged on the upper part of the trolley, an arc-shaped template is arranged on the outside of the gantry, the arc-shaped template cooperates with the inner wall of the tunnel, columns are arranged at the four corners of the gantry, the bottoms of two columns on the same side are connected to the bottom beam, an auxiliary beam is arranged in parallel on the upper part of the bottom beam, both ends of the auxiliary beam are connected to the column, a support beam parallel to the bottom beam is arranged at intervals in the middle of the gantry, and a hydraulic rod is arranged between the support beam and the bottom beam.

[0005] The lower part of the column is a telescopic box structure, including an outer shell and an inner box. The outer shell is sleeved outside the inner box and can move up and down under the limitation of the inner box. One side of the bottom of the outer shell is connected to the auxiliary beam, and the bottom of the inner box is connected to the bottom beam.

[0006] Support rods are vertically arranged in the middle of both sides of the gantry. There are multiple support rods, which are arranged at intervals and are perpendicular to the auxiliary beams. Support beams are arranged between the columns at both ends of the auxiliary beams and the adjacent support rods.

[0007] One end of the hydraulic rod is arranged at the bottom of the support beam, and the other end of the hydraulic rod is arranged on the upper surface of the bottom beam. The middle part of the hydraulic rod passes through the auxiliary beam, and the lifting and lowering of the auxiliary beam is controlled by the extension and retraction of the hydraulic rod.

[0008] A detachable receiving module is provided between the auxiliary beam and the bottom beam, and the receiving module is used to support the auxiliary beam after the auxiliary beam rises.

[0009] The upright posts are also provided with fasteners, through which the states of the outer shell and the inner box after lifting and lowering are limited.

[0010] The arc-shaped template is additionally provided with extended templates at the bottom of both sides after the door frame is raised, and the curvature of the extended template matches the curvature of the arc-shaped template.

[0011] The beneficial effects of the utility model are as follows: the device has a simple structure and is easy to use. It can cope with complex sections in tunnels by adjusting the height of the door frame and has strong versatility. The setting of the auxiliary beam ensures the safety of the trolley and reduces the labor intensity of operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model.

[0013] Figure 2 It is a schematic diagram of the utility model after the door frame is raised.

[0014] Figure 3 for Figure 1 Schematic side view of .

[0015] Figure 4 for Figure 2 Schematic side view of .

[0016] In the figure: 1. gantry, 101. support rod, 2. arc formwork, 3. column, 301. outer shell, 302. inner box, 4. bottom beam, 5. auxiliary beam, 6. support beam, 7. hydraulic rod, 8. receiving module, 9. extension formwork. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings of this specification to clearly and completely describe the technical solution of the utility model. It should be noted that the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0018] See also Figure 1-Figure 4A portal lifting device for a secondary lining trolley comprises a portal frame 1, an arc-shaped template 2, a column 3, a bottom beam 4, an auxiliary beam 5, a support beam 6 and a hydraulic rod 7. The portal frame 1 is arranged on the upper part of the trolley, and an arc-shaped template 2 is arranged outside the portal frame 1. The arc-shaped template 2 cooperates with the inner wall of the tunnel. The four corners of the portal frame 1 are provided with columns 3, and the bottoms of two columns 3 on the same side are connected to the bottom beam 4. Auxiliary beams 5 are arranged in parallel on the upper part of the bottom beam 4, and the two ends of the auxiliary beam 5 are connected to the columns 3. Support beams 6 parallel to the bottom beam 4 are arranged at intervals in the middle of the portal frame 1, and hydraulic rods 7 are arranged between the support beam 6 and the bottom beam 4. The lower part of the column 3 is a telescopic box structure, including an outer shell 301 and an inner box 302. The outer shell 301 is sleeved outside the inner box 302 and can move up and down under the limitation of the inner box 302. One side of the bottom of the outer shell 301 is connected to the auxiliary beam 5, and the bottom of the inner box 302 is connected to the bottom beam 4. The middle part of both sides of the portal frame 1 is vertically provided with a support rod 101. The number of the support rods 101 is multiple, and the multiple support rods 101 are arranged at intervals and are all perpendicular to the auxiliary beam 5. Support beams 6 are arranged between the columns 3 at both ends of the auxiliary beam 5 and the adjacent support rods 101. One end of the hydraulic rod 7 is arranged at the bottom of the support beam 6, and the other end of the hydraulic rod 7 is arranged on the upper surface of the bottom beam 4. The middle part of the hydraulic rod 7 penetrates the auxiliary beam 5, and the lifting and lowering of the auxiliary beam 5 is controlled by the extension and retraction of the hydraulic rod 7. A detachable receiving module 8 is arranged between the auxiliary beam 5 and the bottom beam 4, and the receiving module 8 is used to support the auxiliary beam 5 after the auxiliary beam 5 rises. The upright column 3 is also provided with fasteners, which limit the state of the outer shell 301 and the inner box 302 after lifting. The curved template 2 is equipped with extended templates 9 at the bottom of both sides after the door frame is raised. The curvature of the extended template 9 matches the curvature of the curved template 2.

[0019] When the utility model is in use:

[0020] When encountering a height difference in the tunnel section, first loosen the fasteners on the four columns 3, then control all the hydraulic rods 7 to extend, and under the drive of the hydraulic rods 7, the support beam 6 and the integrated portal frame 1 rise upward, and stop when the portal frame 1 rises to a suitable height. At this time, a gap is generated between the auxiliary beam 5 and the bottom beam 4 connected to the portal frame 1, and a detachable receiving module 8 is installed in the gap at intervals. The receiving modules 8 arranged at intervals cooperate with the support rods 101 arranged at intervals. The receiving modules 8 have the function of supporting the auxiliary beam 5 and then supporting the entire portal frame 1, and can disperse the stress borne by the fasteners and hydraulic rods 7 on the columns 3, extend the service life of the hydraulic rods 7 and the fasteners, and then use the fasteners to limit the outer shell 301 and the inner box 302 of the column 3, and then adjust the curvature of the arc template 2 to make it fit the inner wall of the tunnel, and finally install the extension template 9 at the bottom of both sides of the arc template 2 to complete the portal frame raising;

[0021] When the tunnel section is restored to its original height, first remove the extension template 9, then remove the receiving module 8, then release the fasteners of the column 3, and then control the hydraulic rod 7 to retract. Driven by the hydraulic rod 7, the support beam 6 and the gantry 1 gradually descend to a suitable height, adjust the curvature of the arc template 2 to make it fit the inner wall of the tunnel, and then use fasteners to restrict the outer shell 301 and the inner box 302 of the column 3 to complete the operation.

[0022] 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 principles of the present invention should be included in the protection scope of the present invention.

[0023] The parts not described in detail in this utility model are prior art.

Claims

1. A portal lifting device for a secondary lining trolley, comprising a portal frame (1), an arc-shaped template (2), a column (3), a bottom beam (4), an auxiliary beam (5), a support beam (6) and a hydraulic rod (7), wherein: The portal frame (1) is arranged on the upper part of the trolley, and an arc-shaped template (2) is arranged outside the portal frame (1), and the arc-shaped template (2) cooperates with the inner wall of the tunnel. The four corners of the portal frame (1) are provided with columns (3), and the bottoms of two columns (3) on the same side are connected to a bottom beam (4). An auxiliary beam (5) is arranged in parallel on the upper part of the bottom beam (4), and the two ends of the auxiliary beam (5) are connected to the columns (3). A support beam (6) parallel to the bottom beam (4) is arranged at intervals in the middle of the portal frame (1), and a hydraulic rod (7) is arranged between the support beam (6) and the bottom beam (4).

2. A gantry lifting device for a secondary lining trolley according to claim 1, characterized in that: The lower part of the column (3) is a telescopic box structure, comprising an outer shell (301) and an inner box (302); the outer shell (301) is sleeved outside the inner box (302) and can move up and down under the limitation of the inner box (302); one side of the bottom of the outer shell (301) is connected to the auxiliary beam (5), and the bottom of the inner box (302) is connected to the bottom beam (4).

3. The gantry lifting device for the secondary lining trolley according to claim 1 is characterized in that: Support rods (101) are vertically arranged in the middle of both sides of the portal frame (1), the number of the support rods (101) is multiple, the multiple support rods (101) are arranged at intervals and are all perpendicular to the auxiliary beam (5), and support beams (6) are arranged between the columns (3) at both ends of the auxiliary beam (5) and the adjacent support rods (101).

4. The gantry lifting device for the secondary lining trolley according to claim 1 is characterized in that: One end of the hydraulic rod (7) is arranged at the bottom of the support beam (6), and the other end of the hydraulic rod (7) is arranged on the upper surface of the bottom beam (4). The middle part of the hydraulic rod (7) passes through the auxiliary beam (5), and the lifting and lowering of the auxiliary beam (5) is controlled by the extension and retraction of the hydraulic rod (7).

5. The gantry lifting device for the secondary lining trolley according to claim 1 is characterized in that: A detachable receiving module (8) is provided between the auxiliary beam (5) and the bottom beam (4), and the receiving module (8) is used to support the auxiliary beam (5) after the auxiliary beam (5) rises.

6. The gantry lifting device for the secondary lining trolley according to claim 1 is characterized in that: The upright post (3) is also provided with a fastener, through which the state of the outer shell (301) and the inner box (302) after being raised or lowered is limited.

7. The gantry lifting device for the secondary lining trolley according to claim 1 is characterized in that: The arc-shaped template (2) is provided with extended templates (9) at the bottom of both sides after the door frame is raised, and the curvature of the extended template (9) matches the curvature of the arc-shaped template (2).

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