A new trolley for variable-section tunnel structure and its modification method

Abstract

The present invention discloses a new type of trolley for variable cross-section tunnel structures and a modification method thereof, comprising: a gantry unit, a top panel unit, a side panel unit, an expanded panel unit, a hand hoist and a steel wire rope; wherein the expanded panel unit is provided with an elastic joint, which can be elastically extended at the variable cross-section location, so that the panel can better fit the variable cross-section structure of the tunnel; the device adopts two sets of lifting components, the second lifting component arranged in the supporting door column is used to adjust the height of the entire device, and the first lifting component arranged at the bottom of the lifting frame is used to fine-tune the height of the side panel, so that the spacing between the panel and the tunnel structure is more accurate. The modification method only requires the preparation of the expanded panel unit, hand hoist, hook and other materials for the variable cross-section location in advance, and the production cost is also low, the production and processing are simple, the actual operation is convenient, and the practicality is strong, providing a more favorable measure for the construction of variable cross-section tunnel structures.

Description

Technical Field

[0001] The invention relates to a tunnel lining trolley, in particular to a novel trolley for a variable-section tunnel structure and a modification method thereof. Background Art

[0002] Lining trolleys play a crucial role in tunnel lining construction. Using trolley construction technology, instead of formwork support technology, ensures uniform stress distribution, overall stability, and a high-quality appearance after the concrete is formed. However, due to design requirements, tunnel cross-sections often vary from a single standard cross-section to other unusual sizes. Because trolley formwork is integrally formed, a single set of formwork is only suitable for one cross-section. Therefore, modifying the trolleys used for variable-section tunnels is particularly important. Summary of the Invention

[0003] The main purpose of the present invention is to overcome the deficiencies of the prior art and to provide a new type of trolley with a simple structure for a variable cross-section tunnel structure and a modification method.

[0004] To achieve the above-mentioned object, the present invention provides a new type of trolley for a variable-section tunnel structure, characterized in that it comprises:

[0005] The mast unit comprises a main beam, two supporting masts connected to both ends of the main beam, and two lifting frames connected to the outsides of the two supporting masts;

[0006] The trolley panel unit includes a top panel unit mounted on the main crossbeam and two side panel units detachably connected to both sides of the top panel unit, and the two side panel units are respectively mounted on two lifting frames;

[0007] A supporting screw is provided between the side panel unit and the lifting frame, and the side panel unit comprises an upper side panel, a middle side panel and a lower side panel which are detachably connected in sequence, and the middle side panel and the lower side panel are hinged;

[0008] It also includes at least one expanded panel unit, which is used to replace the middle side panel of the corresponding side panel unit when a variable cross-section is required and is detachably connected between the corresponding upper side panel and the lower side panel.

[0009] Furthermore, the lifting frame is set to a trapezoidal structure, the lifting frame is slidably connected to the supporting door column, a first lifting component is provided at the bottom of the lifting frame, and the outer side of the lifting frame is hinged to multiple supporting screw rods.

[0010] Furthermore, a support beam is provided under the top panel unit, a secondary beam is provided under the support beam, a slider is provided under the secondary beam, the slider is slidably connected to the main beam, and the slider is connected to a horizontal pushing component, which is used to adjust the horizontal displacement of the top panel unit.

[0011] Furthermore, the enlarged panel unit includes at least two enlarged panels, and two adjacent enlarged panels are connected via an elastic joint.

[0012] Furthermore, the elastic joint includes two L-shaped connectors and a flexible body. The webs of the two L-shaped connectors are connected by the flexible body, and the flanges of the two L-shaped connectors are connected to the expanded panel unit by bolts.

[0013] Furthermore, both ends of the top panel unit are rotatably connected to the side panel units.

[0014] Furthermore, a fixing piece is provided on the inner side of the side panel unit, and the fixing piece is connected to the supporting screw rod.

[0015] Furthermore, each of the panel units is provided with a plurality of material passing windows.

[0016] Furthermore, a moving device is provided under the supporting door post, a ground supporting screw rod is provided on the inner side of the supporting door post, and a second lifting component is provided inside the supporting door post.

[0017] Furthermore, a novel trolley modification method for a variable cross-section tunnel structure, using the above-mentioned device and a hand chain hoist and a wire rope, comprises the following steps;

[0018] S1. First, shorten the length of all support screws to move the side panel unit inward;

[0019] S2. Weld lifting lugs to the middle side panel that needs to be removed and secure the chain hoist to the lifting frame with wire rope.

[0020] S3. Use another wire rope to hang on the hook of the hand chain hoist. Extend the other wire rope from the feed window and connect it to the lug on the middle side panel. Then remove the middle side panel and use the hand chain hoist to remove the middle side panel.

[0021] S4. After the middle side panel is removed, weld the lifting lugs on the expanded panel unit that needs to be replaced, then place the expanded panel unit with the welded lifting lugs in the pre-installation position. After moving the trolley to the corresponding position, use the wire rope to connect the lifting lugs to complete the installation of the expanded panel unit. After the installation is completed, cut the lifting lugs.

[0022] The beneficial effects of the present invention are reflected in: the device and the modification method can quickly and effectively reassemble the variable-section trolley panels, the joints between the trolley panels are small, and the lines are smooth; the expanded panel unit is provided with an elastic joint, which can be elastically extended at the variable-section location, so that the panel fits the variable-section structure of the tunnel more closely; the ordinary trolley only uses one set of lifting components to lift the entire device, while the present device uses two sets of lifting components, the second lifting component arranged in the supporting door column is used to adjust the height of the entire device, and the first lifting component arranged at the bottom of the lifting frame is used to fine-tune the height of the side panel, so that the spacing between the panel and the tunnel structure is more precise; the modification method of the present device is simple in structure, and only needs to prepare the expanded panel unit and hand hoists, hooks and other materials for the variable-section location in advance, the production cost is also low, the production and processing are simple, the actual operation is convenient, and the practicality is strong, providing a more favorable measure for the construction of tunnel variable-section structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural comparison diagram of the standard section and the variable section of the new trolley device;

[0024] Figure 2 for Figure 1 A magnified view of point A in the figure;

[0025] Figure 3 This is the structural diagram of the top panel unit of the new trolley device;

[0026] Figure 4 This is the structural diagram of the supporting door pillars of the new trolley device;

[0027] Figure 5 for Figure 1 Enlarged view of point B in FIG.

[0028] Figure 6 This is the structural diagram of the elastic joint of the new trolley device;

[0029] Figure 7 This is the structural diagram of the modification method of the new trolley device;

[0030] Explanation of the accompanying drawings: 1. Gantry unit; 2. Trolley panel unit; 5. Hand hoist; 6. Wire rope; 7. Lifting lug; 11. Main beam; 12. Support door post; 13. Lifting frame; 14. Support beam; 15. Support screw; 21. Top panel unit; 22. Side panel unit; 23. Enlarged panel unit; 24. Elastic joint; 25. Bolt; 131. First lifting component; 111. Secondary beam; 112. Slider; 113. Horizontal pushing component; 121. Moving device; 122. Ground support screw; 123. Second lifting component; 221. Upper side panel; 222. Middle side panel; 223. Lower side panel; 224. Material transfer window; 225. Fixing part; 231. Enlarged panel; 241. Flexible body; 242. L-shaped connector. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] It should be noted that if the embodiments of the present invention involve directional indications such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0033] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or schemes in which A and B are satisfied at the same time. In addition, "multiple" refers to more than two. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0034] See also Figures 1 to 7 .

[0035] The present invention comprises: a mast unit 1, comprising a main beam 11, two supporting masts 12 respectively connected to both ends of the main beam 11, and two lifting frames 13 respectively connected to the outsides of the two supporting masts 12;

[0036] The trolley panel unit 2 includes a top panel unit 21 mounted on the main crossbeam 11 and two side panel units 22 detachably connected to both sides of the top panel unit 21, and the two side panel units 22 are respectively mounted on two lifting frames 13;

[0037] A support screw 15 is provided between the side panel unit 22 and the lifting frame 13. The side panel unit 22 includes an upper side panel 221, a middle side panel 222 and a lower side panel 223 that are detachably connected in sequence. The middle side panel 222 and the lower side panel 223 are hinged.

[0038] It also includes at least one expanded panel unit 23, which is used to replace the middle side panel 222 of the corresponding side panel unit 22 when a variable cross-section is required and is detachably connected between the corresponding upper side panel 221 and the lower side panel 223.

[0039] With this design, the top panel unit 21 is connected to the main beam 11, and the side panel unit 22 is connected to the lifting frame 13. The top panel unit 21 and the side panel unit 22 can be assembled together for overall adjustment, or they can be adjusted separately and then assembled, making the trolley panel more convenient to use; the upper side panel 221 and the middle side panel 222 are connected by bolts; the middle side panel 222 and the lower side panel 223 are hinged to make the bottom panel of the trolley fit more closely with the side wall of the tunnel, so that there will be no misalignment or leakage at the bottom of the trolley; preferably, the support screw 15 can adopt a telescopic rod or an electro-hydraulic push rod.

[0040] In one embodiment, the lifting frame 13 is configured as a trapezoidal structure, slidably connected to the support post 12, and a first lifting component 131 is provided at the bottom of the lifting frame 13. The outer side of the lifting frame 13 is hingedly connected to multiple support screws 15. This design allows the first lifting component 131 to adjust the height of the lifting frame 13, thereby adjusting the height and extension direction of the support screws 15, and further more precisely adjusting the height and angle of the side panels.

[0041] In one embodiment, a support beam 14 is provided under the top panel unit 21, a secondary beam 111 is provided under the support beam 14, a slider 112 is provided under the secondary beam 111, the slider 112 is slidably connected to the main beam 11, and the slider 112 is connected to a horizontal pushing component 113, and the horizontal pushing component 113 is used to adjust the horizontal displacement of the top panel unit 21.

[0042] Among them, the horizontal pushing components 113 are set to two groups, left and right, and the two groups of horizontal pushing components 113 adjust the left displacement and the right displacement respectively; this design can align the center of the top panel unit 21 with the center of the tunnel, and the trolley panel fits the tunnel better.

[0043] In one embodiment, the enlarged panel unit 23 includes at least two enlarged panels 231, and two adjacent enlarged panels 231 are connected via an elastic joint 24. The elastic joint 24 has a flexible deformation function.

[0044] In one embodiment, the elastic joint 24 includes two L-shaped connectors 242 and a flexible body 241 . The webs of the two L-shaped connectors 242 are connected by the flexible body 241 , and the flanges of the two L-shaped connectors 242 are connected to the expanded panel unit 23 by bolts 25 .

[0045] This design allows the expanded panel unit 23 to be flexible and deformable. When encountering an irregular variable-section tunnel structure, the expanded panel unit 23 can be extended to better fit the tunnel cross-section. Preferably, the L-shaped connector 242 is made of channel steel, the flexible body 241 is made of rubber bearings, and the L-shaped connector 242 and the flexible body 241 are welded or bonded.

[0046] In one embodiment, both ends of the top panel unit 21 are rotatably connected to the side panel units 22. This design increases the adjustment range of the trolley panel and expands the scope of application.

[0047] In one embodiment, a fixing member 225 is provided on the inner side of the side panel unit 22, and the fixing member 225 is connected to the support screw rod 15. The fixing member 221 and the support screw rod 15 are detachably connected.

[0048] In one embodiment, the panel units are each provided with a plurality of material transfer windows 224. With this design, a grouting pipe can extend from the material transfer window for pouring concrete between the panel and the tunnel.

[0049] In one embodiment, a moving device 121 is provided below the support post 12, a ground support screw rod 122 is provided inside the support post 12, and a second lifting component 123 is provided inside the support post 12. A track is laid below the moving device 121.

[0050] This design makes it easier for the trolley to move in the tunnel; the ground support screw rod 122 can be a telescopic rod, which is inserted into the ground when in use to fix the door post 12; the second lifting component 123 can be used to adjust the height of the entire device.

[0051] The first lifting component 131 , the second lifting component 123 and the horizontal pushing component 113 may be electro-hydraulic push rods.

[0052] In one embodiment, the above device and the hand chain hoist 5 and the wire rope 6 are used, including the following steps:

[0053] S1. First, shorten the length of all support screws 15 and move the side panel unit 22 inward; this way, there is enough space between the trolley panel and the tunnel.

[0054] S2. Weld the lifting lug 7 on the middle side panel 222 to be removed, and fix the hand chain hoist 5 to the lifting frame 13 with a wire rope 6; in this design, the hand chain hoist 5 and the wire rope 6 play a lifting role.

[0055] S3. Use another wire rope to hang on the hook of the hand hoist 5, extend another wire rope 6 from the feeding window 223 and connect the lug 7 on the middle side panel, and then remove the middle side panel 222, using the hand hoist 5 to remove the middle side panel 222;

[0056] S4. After the middle side panel 222 is removed, the lifting lugs 7 are welded to the expanded panel unit 23 to be replaced. The expanded panel unit 23 with the welded lifting lugs 7 is then placed in the pre-installation position. The trolley is moved to the corresponding position, and the expanded panel unit 23 is installed by connecting the lifting lugs 7 with the wire ropes 6. After installation, the lifting lugs 7 are cut. This design is simple to operate, has a low production cost, and is highly practical.

[0057] 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 scope of protection of the present invention.

Claims

1. A new type of trolley for variable cross-section tunnel structure, characterized in that: include: The gantry unit (1) comprises a main crossbeam (11), two supporting door posts (12) respectively connected to both ends of the main crossbeam (11), and two lifting frames (13) respectively connected to the outsides of the two supporting door posts (12); the lifting frames (13) are slidably connected to the supporting door posts (12); The trolley panel unit (2) comprises a top panel unit (21) mounted on the main crossbeam (11) and two side panel units (22) detachably connected to both sides of the top panel unit (21), and the two side panel units (22) are respectively mounted on two lifting frames (13); A supporting screw rod (15) is provided between the side panel unit (22) and the lifting frame (13); the side panel unit (22) comprises an upper side panel (221), a middle side panel (222), and a lower side panel (223) which are detachably connected in sequence; the middle side panel (222) and the lower side panel (223) are hinged; It also includes at least one expanded panel unit (23) for replacing the middle side panel (222) of the corresponding side panel unit (22) when a variable cross-section is required, and is detachably connected between the corresponding upper side panel (221) and the lower side panel (223).

2. The novel trolley for variable cross-section tunnel structure according to claim 1, characterized in that: The lifting frame (13) is configured as a trapezoidal structure. A first lifting component (131) is provided at the bottom of the lifting frame (13). The outer side of the lifting frame (13) is hinged to a plurality of supporting screw rods (15).

3. The novel trolley for variable cross-section tunnel structure according to claim 1, characterized in that: A support beam (14) is provided below the top panel unit (21), a secondary crossbeam (111) is provided below the support beam (14), a slider (112) is provided below the secondary crossbeam (111), the slider (112) is slidably connected to the main crossbeam (11), and the slider (112) is connected to a horizontal pushing component (113), and the horizontal pushing component (113) is used to adjust the horizontal displacement of the top panel unit (21).

4. The novel trolley for variable cross-section tunnel structure according to claim 1, characterized in that: The enlarged panel unit (23) comprises at least two enlarged panels (231), and two adjacent enlarged panels (231) are connected via an elastic joint (24).

5. The novel trolley for variable cross-section tunnel structure according to claim 4, characterized in that: The elastic joint (24) comprises two L-shaped connecting pieces (242) and a flexible body (241); the webs of the two L-shaped connecting pieces (242) are connected via the flexible body (241); and the flanges of the two L-shaped connecting pieces (242) are connected to the expanded panel unit (23) via bolts (25).

6. The novel trolley for variable cross-section tunnel structure according to claim 1, characterized in that: Both ends of the top panel unit (21) are rotatably connected to the side panel units (22).

7. The novel trolley for variable cross-section tunnel structure according to claim 1, characterized in that: A fixing member (225) is provided on the inner side of the side panel unit (22), and the fixing member (225) is connected to the supporting screw rod (15).

8. The novel trolley for variable cross-section tunnel structure according to claim 4, characterized in that: The top panel unit (21), the side panel unit (22), and the expansion panel unit (23) are all provided with a plurality of material passing windows (224).

9. The novel trolley for a variable cross-section tunnel structure according to claim 1, characterized in that: A moving device (121) is provided below the supporting door post (12), a ground support screw rod (122) is provided inside the supporting door post (12), and a second lifting component (123) is provided inside the supporting door post (12).

10. A novel trolley modification method for a variable cross-section tunnel structure, characterized in that: Using the novel trolley for a variable cross-section tunnel structure as claimed in any one of claims 1 to 9, as well as the hand chain hoist (5) and the wire rope (6), comprises the following steps; S1. First, shorten the length of all support screws (15) and move the side panel unit (22) inward; S2. Weld the lug (7) on the middle side panel (222) to be removed, and fix the hand chain hoist (5) to the lifting frame (13) with a wire rope (6); S3. Use another wire rope to hang on the hook of the hand chain hoist (5), extend another wire rope (6) from the feed window (224) and connect it to the lug (7) on the middle side panel, then remove the middle side panel (222) and remove the middle side panel (222) using the hand chain hoist (5); S4. After the middle side panel (222) is removed, the lug (7) is welded to the expansion panel unit (23) to be replaced, and then the expansion panel unit (23) with the lug (7) welded is placed in the pre-installation position. After the trolley is moved to the corresponding position, the installation of the expansion panel unit (23) is completed by connecting the lug (7) with the wire rope (6). After the installation is completed, the lug (7) is cut.

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