Traveling crane structure for slag turning of small-diameter TBM (Tunnel Boring Machine) of pumped storage power station in hole
By designing a hanging structure for small diameter TBM in a pumped storage power station, the column foundation and door crane mechanism in the chamber are used to shorten the slag delivery distance, which solves the problem of small turning radius in the TBM construction. The problem of increased downtime caused by the increase in machine utilization and construction efficiency has improved.
Patent Information
- Application Number
- CN202421181064.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-28
- Publication Date
- 2024-12-27
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In pumped storage power stations, due to the small turning radius of the tunnel line design during construction, the conventional continuous belt slag output method is difficult to achieve, resulting in a long transportation distance of TBM, an increase in downtime, a decrease in the utilization rate of the whole machine, and an increase in project costs.
Design a row crane structure for small diameter TBM, including setting up a column foundation and a door crane mechanism in the chamber, the slag turning mechanism is slidingly connected to the longitudinal beam, shortening the slag delivery distance, reducing downtime, and in the existing slag Complete indoors directly to avoid digging.
By shortening the slag delivery distance, the utilization rate of TBM is improved, the time for slag delivery and vehicle replacement is reduced, the project cost is reduced, and the construction progress is accelerated.
Smart Images
Figure CN222249771U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of traveling crane structures, and in particular to a traveling crane structure used for turning over slag in a tunnel by a small-diameter TBM in a pumped-storage power station. Background Art
[0002] Recently, through the deployment of green energy development, the construction of pumped-storage power stations is an important support for the new power system of modern smart grids; and the drainage corridors and gravity drainage tunnels in pumped-storage power stations constitute the daily and emergency drainage systems in the underground plant system engineering, which are characterized by the need to cope with small turning radius, spiral steep slope climbing around the plant, and tunnel construction across multiple chambers; since the successful introduction of the "Wenden" small-diameter TBM construction method in the Wendeng pumped-storage drainage corridor in Shandong, TBM construction has obvious advantages over drilling and blasting construction, and more and more drainage corridors are constructed using TBM.
[0003] In the existing pumped-storage TBM construction, the tunnel linear design has a minimum turning radius of 30m, which is not easy to achieve using the conventional continuous belt slag discharge method. Therefore, in the existing technology, the construction of the drainage corridor of the pumped-storage power station mainly adopts the establishment of an industrial square and affiliated slag gantry cranes, slag pits and other structures at the tunnel entrance.
[0004] However, due to the long length between the drainage corridor and the gravity drainage tunnel in the pumped storage power station, and the fact that there are multiple cross chambers at a certain distance from the tunnel entrance, such as the intersection of the plant traffic tunnel and the intersection of the ventilation and safety tunnel, after the TBM in the drainage corridor passes through the plant traffic tunnel, its transportation in the tunnel still follows the original slag discharge route, and the transportation distance is long. As a result, the time for each car change of the TBM locomotive (due to limited space on the trolley, empty cars and heavy cars are interchanged at the switch) is also increased, resulting in inevitable downtime for a certain period of time in each cycle, resulting in a waste of excavation time, and the overall machine utilization rate of the TBM gradually becomes lower, resulting in an increase in project costs, so further improvements are needed. Utility Model Content
[0005] In order to shorten the slag transportation distance, the present application provides a traveling crane structure for slag turning in a tunnel by a small-diameter TBM of a pumped-storage power station.
[0006] The crane structure provided in this application for slag turning in the tunnel of a small-diameter TBM in a pumped-storage power station adopts the following technical solution:
[0007] A traveling crane structure for turning slag in a tunnel of a small-diameter TBM in a pumped-storage power station comprises a column foundation arranged in a chamber, a portal crane mechanism arranged on the column foundation, and a slag turning mechanism arranged on the portal crane mechanism. The column foundations are symmetrically arranged along the length direction of the chamber, and a plurality of them are arranged at intervals along the length direction of the chamber. The portal crane mechanism comprises columns fixedly connected to the column foundations, longitudinal beams symmetrically arranged along the length direction of the chamber, and a cross beam arranged between two longitudinal beams. The slag turning mechanism is slidably connected to the longitudinal beams.
[0008] By adopting the above technical solution, by setting the crane structure in the chamber 1, the slag turning mechanism 4 is slidably connected to the longitudinal beam 32 to change its position in the chamber 1 to carry out the slag transportation work, so as to transport the slag to the chamber 1 for slag discharge. Compared with installing the crane structure outside the tunnel entrance, the slag discharge distance is shortened, the downtime of the TBM is reduced, the overall utilization rate of the TBM is improved, and the possibility of prolonged slag discharge and vehicle change time is reduced. Moreover, since the crane does not need to expand the excavation, it can be completed directly in the existing chamber 1, which increases the excavation time, speeds up the construction progress, and reduces the slag discharge cost.
[0009] Preferably, the column foundation includes embedded parts for connecting with the column.
[0010] By adopting the above technical solution and providing embedded parts, the connection strength between the column and the column foundation can be improved.
[0011] Preferably, the column foundation also includes a steel bar foundation and concrete covering the steel bar foundation, the embedded parts include a crooked bar welded to the steel bar foundation and an embedded steel plate fixedly connected to the crooked bar, the lower end of the column is fixedly connected to a flange plate, the flange plate is threaded with bolts, and the bolts are threadedly connected to the embedded steel plate.
[0012] By adopting the above technical solution, the bearing capacity of the embedded steel half-pair column is improved by welding the bending reinforcement and the steel bar foundation, and then the column is installed on the column foundation by bolts through the flange plate and the embedded steel plate to fix the column and the column foundation. When the drainage hole or drainage corridor is dug, the column is disassembled by bolts.
[0013] Preferably, a scissors brace is provided between adjacent columns close to the same inner wall of the chamber.
[0014] By adopting the above technical solution, reinforcement and support are achieved, thereby improving the support for the slag turning mechanism.
[0015] Preferably, the chamber includes a chamber section and a transconducting platform section, the transconducting platform section is connected to the hole excavated by the TBM, the length of the columns located in the chamber section is longer than the columns located in the transconducting platform section, and the upper end surfaces of several columns are at the same height.
[0016] By adopting the above technical solution, since the cross-conductor section and the tunnel excavated by the TBM are connected, in order to reduce the influence of the installed columns on the construction in the tunnel, the upper end faces of several columns are at the same height because the length of the columns located in the chamber section is longer than the columns located in the cross-conductor section, so that the lower ends of the columns are not set at the same height.
[0017] Preferably, the slag turning mechanism includes a gantry crane trolley slidably connected to the longitudinal beam, two first electric hoists respectively arranged on both sides of the gantry crane trolley, a second electric hoist arranged in the middle of the gantry crane trolley, a slag turning hook arranged on the hook of the second electric hoist, and a slag box arranged under the gantry crane trolley, the hook of the first electric hoist is connected to the two ends of the slag box, and the slag turning hook is arranged in the middle of the outer surface of the slag box.
[0018] By adopting the above technical solution, as the gantry crane trolley slides on the longitudinal beam to carry out the slag transportation action, when the two first electric hoists are lifted or lowered synchronously to drive the lifting and lowering of the slag box, when slag turning work is required, the first electric hoists on both sides lower the slag box, and the second electric hoist in the middle lifts the slag turning hook upwards to overturn the slag box to complete the slag turning action.
[0019] Preferably, both end surfaces of the slag box are respectively provided with hanging chains for hanging the first electric hoist.
[0020] By adopting the above technical solution, the slag box can be hung or disassembled on the hook of the first electric hoist so as to be replaced when the slag box is broken.
[0021] Preferably, two slag turning hooks are provided and are arranged on both sides of the hook of the second electric hoist, and the outer surface of the slag box close to the bottom outer wall is provided with a hanging ring for hanging the slag turning hook.
[0022] By adopting the above technical solution, the slag box can be overturned toward one side wall thereof to turn over the slag.
[0023] In summary, the utility model has the following beneficial effects:
[0024] 1. By setting the crane structure in the chamber 1, the slag turning mechanism 4 is slidably connected to the longitudinal beam 32 to change its position in the chamber 1 to carry out the slag transportation work, so as to transport the slag to the chamber 1 for slag discharge. Compared with installing the crane structure outside the tunnel entrance, the slag discharge distance is shortened, the downtime of the TBM is reduced, the overall utilization rate of the TBM is improved, and the possibility of prolonged slag discharge and vehicle change time is reduced. In addition, since the crane does not need to expand the excavation, it can be completed directly in the existing chamber 1, which increases the excavation time, speeds up the construction progress, and reduces the slag discharge cost.
[0025] 2. Use the first electric hoist and the second electric hoist to complete the slag turning action of the slag box. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 This is a schematic diagram of the structure of the slag turning mechanism in the embodiment of the present application;
[0027] Figure 2 is a side structural schematic diagram of a door hanging mechanism in an embodiment of the present application;
[0028] Figure 3 It is a structural schematic diagram of a column foundation in an embodiment of the present application;
[0029] Figure 4 It is a structural schematic diagram of the door hanging mechanism in the embodiment of the present application;
[0030] Figure 5 It is a schematic diagram of the structure of the flange plate and bolts in the embodiment of the present application.
[0031] Explanation of the reference numerals in the accompanying drawings: 1. Chamber; 11. Chamber section; 12. Cross-conductor section; 2. Column foundation; 21. Steel bar foundation; 211. Anchor bar; 212. Hoop bar; 22. Embedded parts; 221. Crutch bar; 222. Embedded steel plate; 23. Concrete; 3. Gantry crane mechanism; 31. Column; 311. Flange plate; 312. Bolt; 32. Longitudinal beam; 33. Cross beam; 4. Slag turning mechanism; 41. Gantry crane trolley; 42. First electric hoist; 43. Second electric hoist; 44. Slag turning hook; 45. Slag box; 451. Hanging chain; 452. Hanging ring; 5. Scissors support. DETAILED DESCRIPTION
[0032] The following is combined with Figure 1-5 , further details of this application are given.
[0033] The embodiment of the present application discloses a crane structure for turning over slag in a tunnel of a small-diameter TBM in a pumped-storage power station.
[0034] Example:
[0035] The crane structure used for small diameter TBM in pumped storage power station to turn over slag in the tunnel, refer to Figure 1 , Figure 2 , including a column foundation 2 arranged in a chamber 1, a gantry mechanism 3 arranged on the column foundation 2, and a slag turning mechanism 4 arranged on the gantry mechanism 3, wherein it should be noted that the chamber 1 is connected to the hole excavated by the TBM to form a cross-setting, and the chamber 1 includes a chamber section 11 and a cross-conducting platform section 12, and the cross-conducting platform section 12 is connected to the hole excavated by the TBM.
[0036] Among them, the column foundations 2 are symmetrically arranged along the length direction of the chamber 1, and there are several column foundations 2 arranged at intervals along the length direction of the chamber 1, specifically ten column foundations, and adjacent column foundations 2 are spaced 6m apart. In this embodiment, the length × width × height of the column foundation 2 is specifically 600mm*400mm*500mm, and the column foundation 2 specifically includes a steel foundation 21, embedded parts 22 welded to the steel foundation 21, and concrete 23 covering the outside of the steel foundation 21.
[0037] Reference Figure 2 , Figure 3 The steel foundation 21 specifically includes a plurality of anchor bars 211 passing through the inner wall of the bottom of the chamber 1 and stirrups 212 wound around the plurality of anchor bars 211. One steel foundation 21 includes 6 anchor bars 211. Holes are drilled through the inner wall of the bottom of the chamber 1 for the anchor bars 211 to pass through. Then, cement mortar or an anchoring agent of the same strength is filled and densely filled to install the anchor bars 211. The upper part of the anchor bars 211 is exposed. Then, the installation of the stirrups 212 is started. In this embodiment, three stirrups 212 are arranged at intervals along the length direction of the exposed anchor bars 211. The stirrups 212 are tied and connected to the anchor bars 211 to complete the installation of the steel foundation 21.
[0038] Then, the embedded parts 22 are embedded. The embedded parts 22 specifically include a bend 221 welded to the steel foundation 21 and an embedded steel plate 222 fixedly connected to the bend 221. In this embodiment, the length×width×height of the embedded steel plate 222 is specifically 550mm×350mm×20mm. The bend 221 is set at the bottom of the embedded steel plate 222, penetrates the embedded steel plate 222 and is welded and fixed. Then, the pouring of concrete 23 begins. A template is installed outside the steel foundation 21, and then C35 concrete 23 is poured in the pouring cavity formed by the template.
[0039] It should be noted that the chamber section 11 is provided with 6 column foundations 2, and the upper end surface of the cross-conductor section 12 is provided with 4 columns 31, and the height of the column foundation 2 located at the cross-conductor section 12 is higher than the column foundation 2 of the chamber section 11.
[0040] Reference Figure 2 , Figure 4, wherein the door hanging mechanism 3 specifically includes a column 31 fixedly connected to the column foundation 2, a longitudinal beam 32 symmetrically arranged along the length direction of the chamber 1, and a cross beam 33 arranged between the two longitudinal beams 32, so that the door hanging structure as a whole is a door-type structure. In this embodiment, the number of columns 31 is the same as the number of column foundations 2, and the columns 31 are H-shaped steels. The upper end faces of several columns 31 are at the same height. Due to the setting of the column foundation 2, the length of the column 31 located in the chamber section 11 is longer than the column 31 located in the cross-conductor section 12, so that the lower end faces of the columns 31 are set at different heights. A C10 channel steel scissors brace 5 is arranged between adjacent columns 31 close to the same inner wall of the chamber 1, and is specifically arranged between the columns 31 located in the chamber section 11.
[0041] The longitudinal beam 32 is an H-shaped steel, the cross beam 33 is an I-shaped steel, and two cross beams 33 are provided and are respectively provided at both ends of the longitudinal beam 32 .
[0042] Reference Figure 5 For the installation between the column 31 and the column foundation 2 , the lower end of the column 31 is fixedly connected with a flange plate 311 , and the flange plate 311 is threaded with bolts 312 , and the bolts 312 are threadedly connected to the embedded steel plate 222 .
[0043] Back to Figure 1 , wherein the slag turning mechanism 4 is slidably connected to the longitudinal beam 32, and the slag turning mechanism 4 specifically includes a gantry crane trolley 41 slidably connected to the longitudinal beam 32, two first electric hoists 42 respectively arranged on both sides of the gantry crane trolley 41, a second electric hoist 43 arranged in the middle of the gantry crane trolley 41, a slag turning hook 44 arranged on the hook of the second electric hoist 43, and a slag box 45 arranged below the gantry crane trolley 41. In this embodiment, the two end surfaces of the slag box 45 are respectively fixedly connected with hanging chains 451 for the first electric hoist 42 to be hung, and the slag turning hook 44 is arranged in the middle of the outer surface of the slag box 45. In this embodiment, two slag turning hooks 44 are provided and are arranged on both sides of the hook of the second electric hoist 43, and the outer surface of the slag box 45 close to the bottom outer wall is provided with a hanging ring 452 for the slag turning hook 44 to be hung.
[0044] The first electric hoist 42 is started to drive the slag box 45 to be raised and lowered. When slag turning work is required, the first electric hoists 42 on both sides lower the slag box 45, and the second electric hoist 43 in the middle lifts the slag turning hook 44 upward to overturn the slag box 45 to complete the slag turning action.
[0045] The implementation principle of the traveling crane structure for turning slag in the tunnel of a small-diameter TBM in a pumped-storage power station in the embodiment of the present application is as follows: by setting the traveling crane structure in the chamber 1, the slag turning mechanism 4 is slidably connected to the longitudinal beam 32 to change its position in the chamber 1 to carry out the work of transporting slag to the chamber 1 for slag discharge. Compared with installing the traveling crane structure outside the tunnel entrance, the slag discharge distance is shortened to reduce the downtime of the TBM, to improve the overall utilization rate of the TBM, and to reduce the possibility of lengthening the time for changing vehicles for slag discharge. Moreover, since the traveling crane does not need to expand the excavation, it can be completed directly in the existing chamber 1, which increases the excavation time, speeds up the construction progress, and reduces the slag discharge cost.
[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A crane structure used for slag turning in a tunnel by a small-diameter TBM in a pumped-storage power station, characterized by: The invention comprises a column foundation (2) arranged in a chamber (1), a gantry mechanism (3) arranged on the column foundation (2), and a slag turning mechanism (4) arranged on the gantry mechanism (3), wherein the column foundation (2) is symmetrically arranged along the length direction of the chamber (1), and a plurality of gantry mechanisms (3) are arranged at intervals along the length direction of the chamber (1), the gantry mechanism (3) comprises a column (31) fixedly connected to the column foundation (2), a longitudinal beam (32) symmetrically arranged along the length direction of the chamber (1), and a transverse beam (33) arranged between two longitudinal beams (32), and the slag turning mechanism (4) is slidably connected to the longitudinal beam (32).
2. The crane structure for slag turning in a tunnel of a small-diameter TBM in a pumped-storage power station according to claim 1 is characterized in that: The column foundation (2) comprises an embedded part (22) for connecting to the column (31).
3. The crane structure for slag turning in a tunnel of a small-diameter TBM in a pumped-storage power station according to claim 2 is characterized in that: The column foundation (2) further comprises a steel bar foundation (21) and concrete (23) covering the steel bar foundation (21); the embedded part (22) comprises a bending rib (221) welded to the steel bar foundation (21) and an embedded steel plate (222) fixedly connected to the bending rib (221); a flange plate (311) is fixedly connected to the lower end of the column (31); a bolt (312) is threadedly penetrated through the flange plate (311); and the bolt (312) is threadedly connected to the embedded steel plate (222).
4. The crane structure for slag turning in a tunnel of a small-diameter TBM in a pumped-storage power station according to claim 1 is characterized in that: A scissor brace (5) is provided between adjacent columns (31) close to the same inner wall of the chamber (1).
5. The crane structure for slag turning in a tunnel of a small-diameter TBM in a pumped-storage power station according to claim 1 is characterized in that: The chamber (1) comprises a chamber section (11) and a transconductor section (12); the transconductor section (12) is connected to a hole excavated by a TBM; the columns (31) located in the chamber section (11) are longer than the columns (31) located in the transconductor section (12); and the upper end surfaces of a plurality of columns (31) are at the same height.
6. The crane structure for slag turning in a tunnel of a small-diameter TBM in a pumped-storage power station according to claim 5 is characterized in that: The slag turning mechanism (4) comprises a gantry crane trolley (41) slidably connected to the longitudinal beam (32), two first electric hoists (42) respectively arranged on both sides of the gantry crane trolley (41), a second electric hoist (43) arranged in the middle of the gantry crane trolley (41), a slag turning hook (44) arranged on the hook of the second electric hoist (43), and a slag box (45) arranged below the gantry crane trolley (41), the hook of the first electric hoist (42) is connected to the two ends of the slag box (45), and the slag turning hook (44) is arranged in the middle of the outer surface of the slag box (45).
7. The crane structure for slag turning in a tunnel of a small-diameter TBM in a pumped-storage power station according to claim 6 is characterized in that: Both end surfaces of the slag box (45) are respectively provided with hanging chains (451) for the first electric hoist (42) to be hung.
8. The crane structure for slag turning in a tunnel of a small-diameter TBM in a pumped-storage power station according to claim 6 is characterized by: Two slag turning hooks (44) are provided and are arranged on both sides of the hook of the second electric hoist (43); and a hanging ring (452) for hanging the slag turning hooks (44) is provided on the outer surface of the slag box (45) close to the bottom outer wall.