Trolley for tunnel construction

Abstract

The utility model provides a trolley for tunnel construction, which belongs to the technical field of tunnel construction and comprises a trolley support, main support frames arranged on two sides of the inner wall of the trolley support, lower telescopic hydraulic rods distributed on two sides of the bottom of the trolley support, and upper telescopic hydraulic rods distributed on two sides of the top of the trolley support. An arch-shaped frame is arranged at the bottom of the inner wall of the upper tunnel cover, one end of an upper telescopic hydraulic rod is fixedly connected to the two sides of the bottom of the arch-shaped frame, moving grooves are distributed in the two sides of the trolley support, and lower supporting telescopic rods are arranged in the middles of the moving grooves and hinged to the middle of the lower tunnel cover. According to the trolley for tunnel construction, the upper tunnel cover and the lower tunnel cover outside the trolley support are shrunk through the upper telescopic hydraulic rod and the lower telescopic hydraulic rod by removing the screw rods in the first connecting hole, the second connecting hole, the lower threaded hole and the main threaded hole, and solidified cement is automatically demolded.

Description

Technical Field

[0001] This utility model belongs to the field of tunnel construction technology, and specifically relates to a tunnel construction trolley. Background Technology

[0002] Existing tunnel trolleys require lifting and moving along designated tracks during concrete pouring, making overall movement cumbersome and inefficient, thus reducing the trolley's practicality. The "Highly Stable Tunnel Construction Trolley for Easy Movement" disclosed in application number "CN202110879563.2" represents an increasingly mature technology. By incorporating an abutment rod and a moving wheel, the trolley body can be easily moved. Simultaneously, the rotation of a circular gear allows relative movement between the moving wheel and the abutment rod, ensuring that the lower end of the abutment rod contacts the ground. The device makes contact with the ground, causing the moving wheel rod to lift upwards. This contact with the ground improves the stability of the trolley itself during operation. However, the device has the following drawbacks: when pouring cement for the tunnel, the pressure from top to bottom is significant when the cement solidifies at the top of the internal tunnel support. The weight of the top presses on the external support of the trolley, causing deformation of the support and affecting the construction effect. The support frame lacks a stable support structure and cannot effectively distribute the surface pressure of the arched tunnel cover. After the trolley is assembled and poured, the welded support needs to be removed after the cement solidifies. It cannot effectively reduce the size of the equipment or quickly detach the tunnel shell. Utility Model Content

[0003] The purpose of this utility model is to provide a tunnel construction trolley, which aims to solve the problems in the prior art where the pressure from top to bottom is too large when the top cement solidifies during the internal tunnel support, the top gravity presses on the external support of the trolley causing deformation of the support, affecting the construction effect, the support frame lacks a stable support structure, cannot effectively share the surface pressure of the arched tunnel cover, and after the trolley is assembled and poured, the welded support still needs to be removed after the cement solidifies, which cannot effectively reduce the size of the equipment and quickly detach the tunnel shell.

[0004] To achieve the above objectives, this utility model provides the following technical solution: It includes a trolley support frame, with main support frames on both sides of the inner wall of the trolley support frame. Lower telescopic hydraulic rods are distributed on both sides of the bottom of the trolley support frame, and upper telescopic hydraulic rods are distributed on both sides of the top of the trolley support frame. One end of each lower telescopic hydraulic rod is hinged to a lower tunnel cover, and the top of the lower tunnel cover is hinged to an upper tunnel cover. An arched frame is provided at the bottom of the inner wall of the upper tunnel cover. One end of each upper telescopic hydraulic rod is fixedly connected to both sides of the bottom of the arched frame. Moving slots are distributed on both sides of the trolley support frame, and a lower support telescopic rod is provided in the middle of each moving slot. The lower support telescopic rod is hinged to the middle of the lower tunnel cover.

[0005] In one embodiment of the tunnel construction trolley of this utility model, the lower support telescopic rod is provided with a lower threaded hole in the middle, and a screw is connected to the lower threaded hole by an internal thread.

[0006] In this scheme, the upper and lower telescopic hydraulic rods lift and expand the lower and upper tunnel covers. At this time, the lower support telescopic rod is stretched, fixing the screw in the lower threaded hole and fixing the length of the lower support telescopic rod. The expansion range of the upper tunnel cover is fixed by the lower support telescopic rod.

[0007] In one embodiment of the tunnel construction trolley of this utility model, the arched frame is hinged to the main telescopic rods on both sides, and one end of the main telescopic rod is hinged to the top of one end of the lower support telescopic rod.

[0008] In this scheme, after the lower tunnel cover and the upper tunnel cover are expanded, the main telescopic rod is lengthened. The main telescopic rod supports the hinge joint of the lower tunnel cover and the upper tunnel cover. At the same time, the lower tunnel cover, the upper tunnel cover, and the main telescopic rod form a first support structure. The main telescopic rod supports the telescopic rod below and forms a second support structure between the upper telescopic hydraulic rod, thereby improving the normal stability of the equipment and the support strength of the lower tunnel cover and the upper tunnel cover.

[0009] In one embodiment of the tunnel construction trolley of this utility model, the inner wall of the arched frame is provided with support frames, and the middle of the support frames is provided with X-shaped brackets.

[0010] In this solution, the arched frame is supported by an X-shaped bracket and a support frame, and the arched frame is used to support the top of the upper tunnel cover, thereby increasing the support strength of the upper tunnel cover and preventing excessive pressure from above from causing deformation of the upper tunnel cover.

[0011] In one embodiment of the tunnel construction trolley of this utility model, a main threaded hole is provided in the middle of the main telescopic rod, and a screw is connected to the main threaded hole by an internal thread.

[0012] In this design, after the main telescopic rod extends, the screw is fixed in the main threaded hole to fix the length of the main telescopic rod.

[0013] In one embodiment of the tunnel construction trolley of this utility model, a fixed block is slidably connected to the top and bottom of the inner wall of the moving groove. An auxiliary support rod is hinged to one side of the fixed block. One end of the auxiliary support rod is hinged to the top and bottom of the lower support telescopic rod. A first connecting hole is opened on the other side of the lower support telescopic rod. A second connecting hole is opened in the middle of the fixed block. A screw is threaded between the first connecting hole and the second connecting hole.

[0014] In this solution, when the lower support telescopic rod extends, it drives the auxiliary support rod to move the fixing block, which then presses against the lower support telescopic rod. After the first connecting hole and the second connecting hole are aligned, the fixing block is fixed to the lower support telescopic rod using a screw. The auxiliary support rod supports the lower support telescopic rod, thereby increasing the support strength of the lower support telescopic rod.

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

[0016] 1) The expansion range of the upper tunnel cover is fixed by the lower support telescopic rod. After the lower tunnel cover and the upper tunnel cover expand, the main telescopic rod is lengthened. The main telescopic rod supports the hinge of the lower tunnel cover and the upper tunnel cover. At the same time, the lower tunnel cover, the upper tunnel cover, and the main telescopic rod form a first support structure. The main telescopic rod, the lower support telescopic rod, and the upper telescopic hydraulic rod form a second support structure, which improves the stability of the equipment support and the support strength of the lower tunnel cover and the upper tunnel cover. The arch frame is supported by the X-shaped bracket and the support frame. The top of the upper tunnel cover is supported by the arch frame. The lower support telescopic rod is supported by the auxiliary support rod, which improves the support strength of the lower support telescopic rod and the support strength of the upper tunnel cover, and avoids the deformation of the upper tunnel cover due to excessive pressure from above.

[0017] 2) By removing the inner screws of the first connecting hole, the second connecting hole, the lower threaded hole, and the main threaded hole, and by using the upper telescopic hydraulic rod and the lower telescopic hydraulic rod to reduce the size of the upper tunnel cover and the lower tunnel cover outside the trolley support, the solidified cement is automatically demolded. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0021] Figure 3 This is a schematic diagram of the movable slot structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the support frame structure of this utility model.

[0023] In the diagram: 1. Trolley support; 2. Main support frame; 3. Lower telescopic hydraulic rod; 4. Upper telescopic hydraulic rod; 5. Lower tunnel cover; 6. Upper tunnel cover; 7. Arch frame; 8. Moving groove; 9. Lower support telescopic rod; 10. Lower threaded hole; 11. Main telescopic rod; 12. Support frame; 13. X-shaped bracket; 14. Main threaded hole; 15. Fixing block; 16. Auxiliary support rod; 17. First connecting hole; 18. Second connecting hole. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1 - Figure 4 This utility model provides the following technical solution: a tunnel construction trolley, including a trolley support 1, main support frames 2 on both sides of the inner wall of the trolley support 1, lower telescopic hydraulic rods 3 distributed on both sides of the bottom of the trolley support 1, upper telescopic hydraulic rods 4 distributed on both sides of the top of the trolley support 1, a lower tunnel cover 5 hinged to one end of the lower telescopic hydraulic rod 3, an upper tunnel cover 6 hinged to the top of the lower tunnel cover 5, an arched frame 7 provided at the bottom of the inner wall of the upper tunnel cover 6, one end of the upper telescopic hydraulic rod 4 fixedly connected to both sides of the bottom of the arched frame 7, and movable slots 8 distributed on both sides of the trolley support 1, a lower support telescopic rod 9 provided in the middle of the movable slot 8, and the lower support telescopic rod 9 hinged to the middle of the lower tunnel cover 5.

[0026] In a specific embodiment of a tunnel construction trolley, please refer to Figure 2 The lower support telescopic rod 9 has a lower threaded hole 10 in the middle, and a screw is connected to the lower threaded hole 10 by an internal thread.

[0027] Please see Figure 2 The upper telescopic hydraulic rod 4 and the lower telescopic hydraulic rod 3 lift and expand the lower tunnel cover 5 and the upper tunnel cover 6. At this time, the lower support telescopic rod 9 is stretched, and the screw is fixed in the lower threaded hole 10 to fix the length of the lower support telescopic rod 9. The expansion range of the upper tunnel cover 6 is fixed by the lower support telescopic rod 9.

[0028] In a specific embodiment of a tunnel construction trolley, please refer to Figure 2 The arched frame 7 has main telescopic rods 11 hinged on both sides, and one end of the main telescopic rod 11 is hinged to the top of one end of the lower support telescopic rod 9.

[0029] Please see Figure 2When the lower tunnel cover 5 and the upper tunnel cover 6 are expanded, the main telescopic rod 11 is lengthened. The main telescopic rod 11 supports the hinge joint of the lower tunnel cover 5 and the upper tunnel cover 6. At the same time, the lower tunnel cover 5, the upper tunnel cover 6, and the main telescopic rod 11 form a first support structure. The main telescopic rod 11 supports the telescopic rod 9 and the upper telescopic hydraulic rod 4 to form a second support structure, thereby improving the stability of the equipment support and the support strength of the lower tunnel cover 5 and the upper tunnel cover 6.

[0030] In a specific embodiment of a tunnel construction trolley, please refer to Figure 4 The inner wall of the arched frame 7 is provided with support frames 12, and the middle of the support frame 12 is provided with an X-shaped bracket 13.

[0031] Please see Figure 4 The arched frame 7 is supported by the X-shaped bracket 13 and the support frame 12, and the top of the upper tunnel cover 6 is supported by the arched frame 7, which improves the support strength of the upper tunnel cover 6 and avoids deformation of the upper tunnel cover 6 due to excessive pressure from above.

[0032] In a specific embodiment of a tunnel construction trolley, please refer to Figure 2 The main telescopic rod 11 has a main threaded hole 14 in the middle, and a screw is connected to the main threaded hole 14 by an internal thread.

[0033] Please see Figure 2 After the main telescopic rod 11 extends, the screw is fixed in the main threaded hole 14 to fix the length of the main telescopic rod 11.

[0034] In a specific embodiment of a tunnel construction trolley, please refer to Figure 3 A fixed block 15 is slidably connected to the top and bottom of the inner wall of the movable groove 8. An auxiliary support rod 16 is hinged to one side of the fixed block 15. One end of the auxiliary support rod 16 is hinged to the top and bottom of the lower support telescopic rod 9. A first connecting hole 17 is opened on the other side of the lower support telescopic rod 9. A second connecting hole 18 is opened in the middle of the fixed block 15. A screw is threaded between the first connecting hole 17 and the second connecting hole 18.

[0035] Please see Figure 3 When the lower support telescopic rod 9 extends, it drives the auxiliary support rod 16 to move the fixing block 15, and the fixing block 15 abuts against the lower support telescopic rod 9. After the first connecting hole 17 and the second connecting hole 18 are aligned, the fixing block 15 and the lower support telescopic rod 9 are fixed by screws. The auxiliary support rod 16 supports the lower support telescopic rod 9, thereby improving the support strength of the lower support telescopic rod 9.

[0036] This utility model provides a tunnel construction trolley, specifically used as follows: the upper telescopic hydraulic rod 4 and the lower telescopic hydraulic rod 3 lift and expand the lower tunnel cover 5 and the upper tunnel cover 6. At this time, the lower support telescopic rod 9 is stretched, fixing the screw in the lower threaded hole 10 and fixing the length of the lower support telescopic rod 9. The lower support telescopic rod 9 is used to fix the expansion range of the upper tunnel cover 6. After the lower tunnel cover 5 and the upper tunnel cover 6 expand, the main telescopic rod 11 is lengthened. The main telescopic rod 11 supports the hinge joint of the lower tunnel cover 5 and the upper tunnel cover 6. At the same time, the lower tunnel cover 5, the upper tunnel cover 6, and the main telescopic rod 11 form a first support structure, and the main telescopic rod 11, the lower support telescopic rod 9, and the upper telescopic hydraulic rod 4 form a second support structure, improving the stability of the equipment support. The support strength of the lower tunnel cover 5 and the upper tunnel cover 6 is improved through the X-shaped bracket 13 and the support... The support frame 12 supports the arched frame 7, and the arched frame 7 supports the top of the upper tunnel cover 6, improving the support strength of the upper tunnel cover 6 and preventing the upper tunnel cover 6 from deforming due to excessive pressure from above. When the lower support telescopic rod 9 extends, it drives the auxiliary support rod 16 to move the fixing block 15, and the fixing block 15 abuts against the lower support telescopic rod 9. After the first connecting hole 17 and the second connecting hole 18 are aligned, the fixing block 15 and the lower support telescopic rod 9 are fixed with screws. The auxiliary support rod 16 supports the lower support telescopic rod 9, improving the support strength of the lower support telescopic rod 9. When the cement solidifies, the screws in the first connecting hole 17, the second connecting hole 18, the lower threaded hole 10, and the main threaded hole 14 are removed. The upper tunnel cover 6 and the lower tunnel cover 5 outside the trolley bracket 1 are reduced by the upper telescopic hydraulic rod 4 and the lower telescopic hydraulic rod 3, and the solidified cement is automatically demolded.

[0037] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A tunnel construction trolley, comprising a trolley support (1), characterized in that: The trolley support (1) has main support frames (2) on both sides of its inner wall. The trolley support (1) has lower telescopic hydraulic rods (3) on both sides of its bottom. The trolley support (1) has upper telescopic hydraulic rods (4) on both sides of its top. One end of the lower telescopic hydraulic rod (3) is hinged to a lower tunnel cover (5). The top of the lower tunnel cover (5) is hinged to an upper tunnel cover (6). The bottom of the inner wall of the upper tunnel cover (6) has an arched frame (7). One end of the upper telescopic hydraulic rod (4) is fixedly connected to both sides of the bottom of the arched frame (7). The trolley support (1) has moving slots (8) on both sides. The moving slots (8) have a lower support telescopic rod (9) in the middle. The lower support telescopic rod (9) is hinged to the middle of the lower tunnel cover (5).

2. The tunnel construction trolley according to claim 1, characterized in that: The lower support telescopic rod (9) has a lower threaded hole (10) in the middle, and a screw is connected to the lower threaded hole (10) by an internal thread.

3. The tunnel construction trolley according to claim 1, characterized in that: The arched frame (7) has main telescopic rods (11) hinged on both sides, and one end of the main telescopic rod (11) is hinged to the top of one end of the lower support telescopic rod (9).

4. A tunnel construction trolley according to claim 3, characterized in that: The inner wall of the arched frame (7) is provided with support frames (12), and the middle of the support frame (12) is provided with an X-shaped bracket (13).

5. A tunnel construction trolley according to claim 3, characterized in that: The main telescopic rod (11) has a main threaded hole (14) in the middle, and a screw is connected to the main threaded hole (14) by internal thread.

6. A tunnel construction trolley according to claim 1, characterized in that: A fixed block (15) is slidably connected to the top and bottom of the inner wall of the movable groove (8). An auxiliary support rod (16) is hinged to one side of the fixed block (15). One end of the auxiliary support rod (16) is hinged to the top and bottom of the lower support telescopic rod (9). A first connecting hole (17) is opened on the other side of the lower support telescopic rod (9). A second connecting hole (18) is opened in the middle of the fixed block (15). A screw is threaded between the first connecting hole (17) and the second connecting hole (18).

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