Adjustable gantry crane adapted to changes in platform and tunnel cross-section

Abstract

The application discloses an adjustable gantry crane adapting to changes of a platform and a tunnel section, relates to the technical field of cranes, and comprises a gantry crane mechanism and adjusting mechanisms assembled on both sides of the gantry crane mechanism. The gantry crane mechanism comprises supporting legs, the top of each supporting leg is fixedly connected with a cross beam, the bottom of the cross beam is provided with a trolley, one side of each supporting leg is fixedly connected with a sliding frame, and the bottom of each supporting leg is rotationally connected with a traveling wheel through a first traveling frame. The adjusting mechanism comprises a moving frame slidingly installed on one side of the sliding frame, and a lifting frame is slidingly installed on one side of the moving frame. The adjustable gantry crane adapting to changes of a platform and a tunnel section can realize traveling operation switching from a tunnel section to a platform section, can simultaneously adapt to the tunnel section and the platform section, and brings more convenience to material hoisting.

Description

Technical Field

[0001] This invention relates to the field of crane technology, and more specifically to an adjustable gantry crane that adapts to changes in platform and tunnel cross-section. Background Technology

[0002] Cut-and-cover tunnels are a common construction method in urban underground engineering, especially in subway construction, underground passage construction, and municipal pipeline laying. The basic construction process is to first excavate the ground to form a foundation pit of a certain size and depth, then construct the tunnel structure in the foundation pit, such as pouring concrete lining or installing precast tunnel segments, and finally backfill and restore the ground. During the construction of cut-and-cover tunnels, the shape and size of the tunnel cross-section will vary depending on different geological conditions, design requirements, and surrounding environment. Common tunnel cross-section shapes include rectangular, arched, and circular, and their size also varies depending on the project requirements. In the construction of cut-and-cover tunnels, gantry cranes are usually used to lift and transport materials.

[0003] However, when the cut-and-cover tunnels of intercity railways are close to the station, the station section often has a platform structure. Although the existing rubber-tired gantry cranes have independent turning functions, their application scenarios are mostly ground or simple tunnel transfers. They cannot simultaneously adapt to the movement of the bottom plate rails and the adaptive adjustments of the platform section, which brings a lot of inconvenience to their use. Summary of the Invention

[0004] The purpose of this invention is to provide an adjustable gantry crane that adapts to changes in platform and tunnel cross-sections, thereby solving the problem that existing cranes cannot simultaneously adapt to the movement of the base plate rails and the adaptive adjustment of the platform section.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an adjustable gantry crane adaptable to changes in platform and tunnel cross-sections, comprising: The gantry crane mechanism and the adjustment mechanism mounted on both sides of the gantry crane mechanism; The gantry crane mechanism includes a support leg, a crossbeam fixedly connected to the top of the support leg, a hoisting trolley installed at the bottom of the crossbeam, a sliding frame fixedly connected to one side of the support leg, and a traveling wheel rotatably connected to the bottom of the support leg via a first traveling frame. The adjustment mechanism includes a movable frame slidably mounted on one side of the sliding frame, a lifting frame slidably mounted on one side of the movable frame, a hydraulic cylinder fixedly mounted on the surface of the movable frame, the piston rod end of the hydraulic cylinder being fixedly connected to the lifting frame, and a track wheel being rotatably connected to the bottom of the lifting frame via a second traveling frame.

[0006] Furthermore, a first driving component is fixedly connected to the bottom of the first walking frame and to one side of the walking wheel, and the first driving component is connected to the walking wheel via a first transmission belt.

[0007] Furthermore, a third driving component is fixedly connected to the front and rear ends of the movable frame, and a gear is fixedly connected to the output shaft of the third driving component. Teeth that mesh with the gear are distributed on the top of the sliding frame.

[0008] Furthermore, the surface of the movable frame is fixedly connected with a slide rail for the lifting frame to slide.

[0009] Furthermore, a second driving component is fixedly connected to the bottom of the second walking frame and to one side of the track wheel, and the second driving component is connected to the track wheel via a second transmission belt.

[0010] Furthermore, the inner wall of the movable frame is provided with a sliding groove for the sliding frame to slide.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention provides an adjustable gantry crane that adapts to changes in platform and tunnel cross-sections. By setting adjustment mechanisms on both sides of the gantry crane mechanism, in the tunnel section, the track wheels can support the gantry crane mechanism, allowing it to travel along the bottom plate rails. When entering the platform section, the sliding frame is driven to slide along the moving frame, enabling the gantry crane mechanism to move. In conjunction with the lifting action of the lifting frame, the traveling wheels can contact the platform surface, using the traveling wheels to support and move the gantry crane mechanism. This allows for switching between the tunnel section and the platform section, simultaneously adapting to both tunnel and platform sections, bringing greater convenience to material handling. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0013] Figure 1 This is a schematic diagram of the first configuration of the adjustable gantry crane provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the second form of the adjustable gantry crane provided in an embodiment of the present invention; Figure 3 A schematic diagram of the third configuration of the adjustable gantry crane provided in an embodiment of the present invention; Figure 4This is a schematic diagram of the gantry crane mechanism provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the adjustment mechanism structure provided in an embodiment of the present invention; Figure 6 This is a partial structural diagram of the gear and sliding frame provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the mobile frame structure provided in an embodiment of the present invention.

[0014] Explanation of reference numerals in the attached figures: 1. Gantry crane mechanism; 11. Crossbeam; 12. Lifting trolley; 13. Support leg; 14. Sliding frame; 15. Gear; 16. First traveling frame; 17. Traveling wheel; 18. First drive component; 19. First transmission belt; 2. Adjustment mechanism; 21. Moving frame; 22. Slide rail; 23. Lifting frame; 24. Second traveling frame; 25. Track wheel; 26. Second drive component; 27. Second transmission belt; 28. Third drive component; 29. ​​Gear; 210. Hydraulic cylinder; 211. Slide groove. Detailed Implementation

[0015] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0016] As attached Figure 1 To be continued Figure 7 As shown: Example 1: This invention provides an adjustable gantry crane that adapts to changes in platform and tunnel cross-sections, comprising: Gantry crane mechanism 1 and adjustment mechanism 2 assembled on both sides of gantry crane mechanism 1; The gantry crane mechanism 1 includes a support leg 13, a crossbeam 11 fixedly connected to the top of the support leg 13, a hoisting vehicle 12 installed at the bottom of the crossbeam 11, a sliding frame 14 fixedly connected to one side of the support leg 13, and a traveling wheel 17 rotatably connected to the bottom of the support leg 13 through a first traveling frame 16. The adjustment mechanism 2 includes a movable frame 21 slidably mounted on one side of the sliding frame 14, a lifting frame 23 slidably mounted on one side of the movable frame 21, a hydraulic cylinder 210 fixedly mounted on the surface of the movable frame 21, the piston rod end of the hydraulic cylinder 210 being fixedly connected to the lifting frame 23, and a track wheel 25 being rotatably connected to the bottom of the lifting frame 23 via a second traveling frame 24.

[0017] As can be seen from the above, when the crane is in the tunnel section working environment, the track wheel 25 in the adjustment mechanism 2 contacts the steel rail of the tunnel floor. By rotating the track wheel 25, the crane can move stably along the steel rail. When the crane needs to enter the platform section from the tunnel section, the sliding frame 14 is driven to slide horizontally along the moving frame 21, and the gantry crane mechanism 1 is adjusted to move forward or backward, so that the traveling wheel 17 can move to the surface of the platform section. By controlling the piston rod of the hydraulic cylinder 210 to retract, the lifting frame 23 can be driven to slide up and down along the surface of the moving frame 21, so that the height of the gantry crane mechanism 1 can be easily adjusted, so that the traveling wheel 17 contacts the surface of the platform section. The traveling wheel 17 can be used to support the gantry crane mechanism 1, so that the gantry crane mechanism 1 can move on the surface of the platform section. When the gantry crane mechanism 1 moves to the platform section surface, the hydraulic cylinder 210 retracts to drive the lifting frame 23 to slide upward along the moving frame 21, causing the track wheel 25 to gradually detach from the rail and rise, so that the lifting frame 23 can be stored on one side of the moving frame 21, avoiding affecting the walking operation of the traveling wheel 17. By driving the traveling wheel 17 to rotate, the crane can move on the platform section. During this process, the hoisting vehicle 12 can move left and right along the crossbeam 11, which facilitates the hoisting operation of materials.

[0018] From the appendix Figure 4 It is known that a first driving component 18 is fixedly connected to the bottom of the first walking frame 16 and to one side of the walking wheel 17. The first driving component 18 and the walking wheel 17 are connected by a first transmission belt 19.

[0019] As can be seen from the above, the first driving component 18 is a motor, which can drive the first transmission belt 19 to rotate, thereby driving the traveling wheel 17 to rotate, providing power for the gantry crane mechanism 1 to move on the platform section, and ensuring that the traveling wheel 17 can stably and efficiently drive the entire crane to move.

[0020] For details, please refer to the appendix. Figure 5 and attached Figure 6 As shown, the front and rear ends of the movable frame 21 are fixedly connected to a third driving member 28, the output shaft of the third driving member 28 is fixedly connected to a gear 29, and the top of the sliding frame 14 is distributed with teeth 15 that mesh with the gear 29.

[0021] As can be seen from the above, the third driving component 28 is a motor, and its output shaft drives the gear 29 to rotate. Since the gear 29 meshes with the teeth 15 on the top of the sliding frame 14, when the gear 29 rotates, it will drive the sliding frame 14 to slide horizontally along the moving frame 21, thereby realizing the position adjustment of the gantry crane mechanism 1 relative to the adjustment mechanism 2, so that the traveling wheel 17 can accurately move to the surface of the platform section or return from the platform section to the tunnel section.

[0022] For details, please refer to the appendix. Figure 5 As shown, the surface of the movable frame 21 is fixedly connected to a slide rail 22 for the lifting frame 23 to slide.

[0023] As can be seen from the above, the slide rail 22 provides a stable guide for the up and down sliding of the lifting frame 23, ensuring that the lifting frame 23 can move smoothly along the preset trajectory under the drive of the hydraulic cylinder 210, avoiding deviation or shaking during the lifting process, and improving the overall stability and reliability of the adjustment mechanism 2. When the piston rod of the hydraulic cylinder 210 extends or retracts, the lifting frame 23 can accurately achieve height adjustment under the constraint of the slide rail 22, thereby ensuring the smooth switching operation between the track wheel 25 and the traveling wheel 17.

[0024] Working principle: When the crane is operating in the tunnel section, the track wheel 25 in the adjusting mechanism 2 contacts the steel rail of the tunnel floor. At this time, the third drive component 28 is not activated, and the sliding frame 14 and the moving frame 21 remain relatively fixed. By driving the track wheel 25 to rotate, the crane moves along the steel rail. When it needs to enter the platform section, the third drive component 28 is activated, and its output shaft drives the gear 29 to rotate. Since the gear 29 meshes with the teeth 15 on the top of the sliding frame 14, the sliding frame 14 slides along the moving frame 21, thereby driving the gantry crane mechanism 1 to move as a whole, so that the traveling wheel 17 moves above the platform section. Then, the piston rod of the hydraulic cylinder 210 retracts, driving the lifting frame 2... 3. The crane slides upward along the slide rail 22 on the surface of the movable frame 21, and the track wheel 25 is lifted and detached from the rail. At the same time, the traveling wheel 17 contacts the platform surface. Then, the first drive unit 18 runs and drives the traveling wheel 17 to rotate through the first transmission belt 19, so that the crane can travel in the platform section. During the entire switching process, the crane 12 can move along the crossbeam 11 to lift materials, ensuring the continuity of the operation. When returning from the platform section to the tunnel section, the above steps are reversed. First, the hydraulic cylinder 210 pushes the lifting frame 23 down to make the track wheel 25 contact the rail. Then, the third drive unit 28 drives the sliding frame 14 to reset. Finally, the track wheel 25 is driven to travel in the tunnel section.

[0025] Example 2: Reference Appendix Figure 5 As shown, a second drive unit 26 is fixedly connected to the bottom of the second walking frame 24 and to one side of the track wheel 25. The second drive unit 26 and the track wheel 25 are connected by a second transmission belt 27.

[0026] As can be seen from the above, the second drive component 26 is a motor, which can drive the second transmission belt 27 to rotate when it is working, thereby driving the track wheel 25 to rotate, providing power for the crane to travel along the rail in the tunnel section. When the crane is in the tunnel section, the second drive component 26 starts and transmits power to the track wheel 25 through the second transmission belt 27, so that the track wheel 25 rolls on the rail, thereby realizing the stable movement of the crane and ensuring the travel needs when working in the tunnel section.

[0027] Reference Appendix Figure 7 As shown, the inner wall of the movable frame 21 is provided with a sliding groove 211 for the sliding frame 14 to slide.

[0028] As can be seen from the above, by using the T-shape of the slide groove 211 and the sliding frame 14, the slide groove 211 can limit the sliding frame 14, providing guidance and limiting function for the sliding frame 14 within the moving frame 21. When the third driving member 28 drives the gear 29 to rotate, thereby driving the sliding frame 14 to move, the sliding frame 14 can slide smoothly along the length direction of the slide groove 211, effectively preventing the sliding frame 14 from shifting laterally or swaying during the sliding process, ensuring that the relative movement between the sliding frame 14 and the moving frame 21 is more stable and reliable, thereby ensuring the accuracy and safety of the gantry crane mechanism 1 during the position adjustment process, and avoiding the impact on the overall crane's operating accuracy and structural stability due to unstable sliding.

[0029] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An adjustable gantry crane adaptable to changes in platform and tunnel cross-section, characterized in that, include: Gantry crane mechanism (1) and adjustment mechanism (2) assembled on both sides of the gantry crane mechanism (1); The gantry crane mechanism (1) includes a support leg (13), a crossbeam (11) is fixedly connected to the top of the support leg (13), a hoisting vehicle (12) is installed at the bottom of the crossbeam (11), a sliding frame (14) is fixedly connected to one side of the support leg (13), and a traveling wheel (17) is rotatably connected to the bottom of the support leg (13) through a first traveling frame (16). The adjustment mechanism (2) includes a movable frame (21) slidably mounted on one side of the sliding frame (14), a lifting frame (23) slidably mounted on one side of the movable frame (21), a hydraulic cylinder (210) fixedly mounted on the surface of the movable frame (21), the piston rod end of the hydraulic cylinder (210) being fixedly connected to the lifting frame (23), and a track wheel (25) being rotatably connected to the bottom of the lifting frame (23) through a second traveling frame (24).

2. The adjustable gantry crane according to claim 1, adapting to changes in platform and tunnel cross-section, is characterized in that, A first drive member (18) is fixedly connected to the bottom of the first walking frame (16) and to one side of the walking wheel (17). The first drive member (18) and the walking wheel (17) are connected by a first transmission belt (19).

3. An adjustable gantry crane adaptable to changes in platform and tunnel cross-sections according to claim 1, characterized in that, The front end and rear end of the movable frame (21) are fixedly connected to a third driving member (28), and the output shaft of the third driving member (28) is fixedly connected to a gear (29). The top of the sliding frame (14) has teeth (15) that mesh with the gear (29).

4. An adjustable gantry crane adaptable to changes in platform and tunnel cross-section according to claim 1, characterized in that, The surface of the movable frame (21) is fixedly connected to a slide rail (22) for the lifting frame (23) to slide.

5. An adjustable gantry crane adaptable to changes in platform and tunnel cross-section according to claim 1, characterized in that, A second drive unit (26) is fixedly connected to the bottom of the second walking frame (24) and to one side of the track wheel (25). The second drive unit (26) and the track wheel (25) are connected by a second transmission belt (27).

6. An adjustable gantry crane adaptable to changes in platform and tunnel cross-section according to claim 1, characterized in that, The inner wall of the movable frame (21) is provided with a groove (211) for the sliding frame (14) to slide.

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