Slag slipping device for tunnel construction

Abstract

The utility model discloses a slag slipping device for tunnel construction, which comprises a fixed frame, a chute, a plurality of side buffer components, a middle buffer component and a cover plate, the fixed frame is fixedly arranged in a tunnel, the chute is arranged on the fixed frame, the side buffer components are arranged on the fixed frame, and the middle buffer component is arranged on the fixed frame. The side buffering assemblies are arranged at intervals in the extending direction of the chute and arranged on the inner walls of the two opposite sides of the chute in a staggered mode, the cover plate covers the top of the chute, and the middle buffering assembly is connected with the cover plate and the bottom of the chute. According to the slag sliding device for tunnel construction, multi-stage speed reduction is achieved, the speed and impact force of slag sliding out of the chute are reduced, the impact of the slag on slag transferring equipment is reduced, the situation that the slag rushes out of the slag transferring equipment and hurts personnel is avoided, and the service life of the slag transferring equipment is prolonged. And meanwhile, the slag stones are prevented from being blocked in the chute to influence the slipping-out of the slag stones.

Description

Technical Field

[0001] The utility model relates to the technical field of shield machine muck transfer equipment, in particular to a slag chute device for tunnel construction. Background Technique

[0002] During the construction of a water energy storage power station, the construction of the water conveyance tunnel is a particularly crucial link. The water conveyance tunnel has multiple long inclined shaft sections and is often constructed by a hard rock tunnel boring machine (TBM). As the water conveyance tunnel is excavated, a large amount of slag will be generated. If not transported out, it will affect the construction safety and progress. In traditional flat tunnel TBM construction, a continuous belt conveyor is often used for muck removal operations, and this method is very effective in horizontal or gently inclined tunnels. However, in the construction environment of long inclined shafts with large inclination angles, the traditional muck removal method faces many challenges. The muck is prone to slide down under its own weight, the muck removal efficiency of the continuous belt conveyor is limited, and a fixing mechanism needs to be added to prevent the equipment from sliding down with the muck, increasing the construction cost and complexity. In view of the muck removal problem in inclined shaft TBM construction, Chinese patent document CN113482706B discloses an inclined shaft TBM slag chute, which forms a slag chute by arranging a front chute section, a rear chute section and a telescopic chute section connected in sequence to transport the slag, and the rear chute section is detachably connected by a plurality of rear chute units in sequence to meet the muck transportation requirements of different lengths. However, the inclined shaft TBM slag chute still has the following deficiencies in the process of slag transportation: the slag is prone to accelerate and slide down under its own weight, resulting in too high a speed at the outlet, which may cause potential safety hazards and damage to the muck transfer equipment at the bottom of the slag. Especially when the muck transfer equipment is a belt conveyor, the sliding speed of the slag is easily mismatched with the transportation speed of the belt conveyor, causing the slag to rush out and affecting the construction efficiency and safety. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a slag chute device for tunnel construction that can reduce the sliding speed and impact force of the slag and improve the construction safety.

[0004] To solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A slag chute device for tunnel construction, comprising a fixed frame, a chute, side buffer components, a middle buffer component and a cover plate. The fixed frame is fixedly arranged in the tunnel, the chute is arranged on the fixed frame, there are a plurality of side buffer components, and each side buffer component is arranged at intervals along the extension direction of the chute and is staggered on the inner walls of the opposite sides of the chute. The cover plate covers the top of the chute, and the middle buffer component connects the cover plate and the bottom of the chute.

[0006] As a further improvement of the above technical solution: the middle buffer assembly is provided between every pair of adjacent side buffer assemblies.

[0007] As a further improvement of the above technical solution: the middle buffer assembly includes a plurality of buffer chains, and each of the buffer chains is connected to the cover plate and the bottom of the chute and is arranged at intervals in the width direction of the chute.

[0008] As a further improvement of the above technical solution: the buffer chains are arranged obliquely relative to the bottom wall of the chute.

[0009] As a further improvement of the above technical solution: buffer sheets are provided on the buffer chains.

[0010] As a further improvement of the above technical solution: a plurality of buffer sheets are provided on the buffer chains and are arranged at intervals in the length direction of the buffer chains.

[0011] As a further improvement of the above technical solution: the side buffer assembly includes a buffer plate which is obliquely arranged on the inner wall of the chute.

[0012] As a further improvement of the above technical solution: the side buffer assembly further includes a telescopic support assembly. The buffer plate is hinged to the inner wall of the chute, and the telescopic support assembly is arranged between the chute and the buffer plate.

[0013] As a further improvement of the above technical solution: the telescopic support assembly includes a first support rod and a second support rod which are movably sleeved. The first support rod is hinged to the chute, the second support rod is hinged to the buffer plate, and an elastic member and / or a locking member for locking the two are provided between the first support rod and the second support rod.

[0014] As a further improvement of the above technical solution: the cover plate is a steel grating plate.

[0015] Compared with the prior art, the advantages of the present utility model are as follows: For the slag chute device for tunnel construction disclosed by the present utility model, side buffer components are provided on the inner walls of the opposite sides of the chute, and a middle buffer component is connected between the bottom wall and the cover plate of the chute. The slag stones enter the chute from the chute feed inlet. Some of the slag stones flowing down from both sides of the feed inlet will collide with the side buffer components to decelerate, and some of the slag stones flowing down from the middle of the feed inlet will hit the middle buffer component to decelerate. The slag stones that do not touch the side buffer components and the middle buffer component will collide with the decelerated slag stones during the downward flow process, thereby realizing the overall deceleration of the downward-flowing slag stones, reducing the speed and impact force of the slag stones flowing out of the chute, further reducing the impact of the slag stones on the slag transfer equipment, and being beneficial to preventing the slag stones from rushing out of the slag transfer equipment and causing harm to personnel. Since the side buffer components are arranged in a staggered manner along the extension direction of the chute on the inner walls of the opposite sides of the chute, it is beneficial to prevent the slag stones from being blocked in the chute and affecting the flow of the slag stones out. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the front view structural schematic diagram of the slag chute device for tunnel construction of the present utility model.

[0017] Figure 2 is the top view structural schematic diagram of the slag chute device for tunnel construction of the present utility model.

[0018] Figure 3 is the front view structural schematic diagram of the chute of the slag chute device for tunnel construction of the present utility model.

[0019] Figure 4 is the top view structural schematic diagram of the chute of the slag chute device for tunnel construction of the present utility model.

[0020] Figure 5 is Figure 4 the enlarged structural schematic diagram of part A in

[0021] Figure 6 is the side sectional view structural schematic diagram of the chute of the slag chute device for tunnel construction of the present utility model.

[0022] In the figure, each label represents: 1, chute; 2, fixing frame; 3, side buffer component; 31, buffer plate; 32, telescopic support component; 321, first support rod; 322, second support rod; 323, elastic member; 324, locking member; 4, middle buffer component; 41, buffer chain; 5, cover plate; 6, buffer piece. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following will further describe the present utility model in detail with reference to the drawings of the specification and specific embodiments.

[0024] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0025] In the present utility model, unless otherwise clearly specified and defined, terms such as "assembly", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] Figures 1 to 6 An embodiment of the slag chute device for tunnel construction of the present utility model is shown. The slag chute device for tunnel construction of this embodiment includes a fixed frame 2, a chute 1, side buffer components 3, a middle buffer component 4, and a cover plate 5. The fixed frame 2 is fixedly arranged in the tunnel, the chute 1 is arranged on the fixed frame 2, there are multiple side buffer components 3, and each side buffer component 3 is arranged at intervals along the extension direction of the chute 1 and is staggeredly arranged on the inner walls of the opposite sides of the chute 1. The cover plate 5 is covered on the top of the chute 1, and the middle buffer component 4 connects the cover plate 5 and the bottom of the chute 1.

[0027] For the slag chute device for tunnel construction of this embodiment, on the one hand, side buffer components 3 are arranged on the inner walls of the opposite sides of the chute 1, and a middle buffer component 4 is connected between the bottom wall of the chute 1 and the cover plate 5. The slag stones enter the chute 1 from the feed inlet of the chute 1. Some of the slag stones sliding down from both sides of the feed inlet will collide with the side buffer components 3 and decelerate, and some of the slag stones sliding down from the middle of the feed inlet will hit the middle buffer component 4 and decelerate. The slag stones that do not touch the side buffer components 3 and the middle buffer component 4 will collide with the slag stones that have been decelerated during the sliding process and decelerate, thereby realizing the overall deceleration of the sliding slag stones, reducing the speed and impact force of the slag stones flowing out of the chute 1, and further reducing the impact of the slag stones on the slag transfer equipment and being beneficial to preventing the slag stones from rushing out of the slag transfer equipment and causing harm to personnel, improving the construction efficiency and safety; on the other hand, since the side buffer components 3 are staggeredly arranged on the inner walls of the opposite sides of the chute 1 along the extension direction of the chute 1, it is beneficial to prevent the slag stones from being blocked in the chute 1 and affecting the outflow of the slag stones.

[0028] See specificallyFigure 4 and Figure 6 Further, in this embodiment, a middle buffer assembly 4 is provided between each pair of adjacent side buffer assemblies 3. This helps to ensure the uniformity of the deceleration of the slag and stones, so that the discharging speed of the slag and stones from the chute 1 is within a reasonable range.

[0029] Specifically refer to Figure 1 、 Figure 3 、 Figure 4 and Figure 6 Further, in this embodiment, the middle buffer assembly 4 includes a plurality of buffer chains 41. Each buffer chain 41 is connected to the bottom of the cover plate 5 and the chute 1 and is arranged at intervals along the width direction of the chute 1. The buffer chain 41 has a simple structure and is convenient to manufacture. Specifically, the plurality of buffer chains 41 can be arranged in multiple rows. A plurality of first latches are provided on the bottom wall of the chute 1, and a plurality of second latches are provided at the bottom of the cover plate 5. The two ends of the buffer chain 41 are detachably locked to the corresponding first latch and second latch respectively. In actual use, different numbers of buffer chains 41 can be installed according to the deceleration requirements. Of course, in other embodiments, other detachable connection methods can also be used, which will not be elaborated here.

[0030] Specifically refer to Figure 6 Further, in this embodiment, the buffer chain 41 is arranged obliquely relative to the bottom wall of the chute 1. This helps to prevent the slag and stones from accumulating.

[0031] Specifically refer to Figure 1 、 Figure 3 、 Figure 4 and Figure 6 Further, in this embodiment, buffer sheets 6 are provided on the buffer chain 41. This increases the contact area between the buffer chain 41 and the slag and stones, and improves the deceleration effect on the slag and stones.

[0032] Specifically refer to Figure 1 、 Figure 3 、 Figure 4 and Figure 6 Further, in this embodiment, a plurality of buffer sheets 6 are provided on the buffer chain 41 and are arranged at intervals along the length direction of the buffer chain 41. This further increases the contact area between the buffer chain 41 and the slag and stones, and further improves the deceleration effect on the slag and stones.

[0033] Specifically refer to Figure 5 Further, in this embodiment, the side buffer assembly 3 includes a buffer plate 31. The buffer plate 31 is obliquely arranged on the inner wall of the chute 1. The slag and stones that collide with the buffer plate 31 can be guided to the adjacent buffer plate 31 on the other side below. During this process, some of the slag and stones will collide with the middle buffer assembly 4 and decelerate, optimizing the deceleration path of the slag and stones, realizing multi-stage deceleration of the slag and stones, and having a good deceleration effect

[0034] Specifically refer toFigure 5 , further, in this embodiment, the side buffer assembly 3 further includes a telescopic support assembly 32. The buffer plate 31 is hinged to the inner wall of the chute 1, and the telescopic support assembly 32 is arranged between the chute 1 and the buffer plate 31. Specifically, the telescopic support assembly 32 includes a first support rod 321 and a second support rod 322 that are movably sleeved. The first support rod 321 is hinged to the chute 1, and the second support rod 322 is hinged to the buffer plate 31. An elastic member 323 and a locking member 324 for locking the two are provided between the first support rod 321 and the second support rod 322. Specifically, the first support rod 321 is provided with a plurality of limit holes along its length direction, and the second support rod 322 is provided with through holes. The locking member 324 is a bolt, and the bolt passing through the limit holes and the through holes can lock the positions of the first support rod 321 and the second support rod 322. The elastic member 323 is a spring sleeved on the second support rod 322, and the lower end of the spring is arranged inside the first support rod 321. During use, the length of the telescopic support assembly 32 can be adjusted by adjusting the bolt to pass through different limit holes, and then the inclination angle of the buffer plate 31 can be adjusted to meet different deceleration requirements. When the slope of the chute 1 is relatively gentle, the bolt may not be inserted. The slag stones collide with the buffer plate 31 to cause the buffer plate 31 to rotate downward, driving the second support rod 322 to retract into the first support rod 321, and then compressing the spring to dissipate part of the energy of the slag stones sliding down, thereby dissipating part of the impact force received by the buffer plate 31 and improving the service life of the buffer plate 31. Preferably, the limit holes are waist-shaped limit holes. After inserting the bolt into the waist-shaped limit holes on the first support rod 321 and the through holes of the second support rod 322, when the slag stones collide with the buffer plate 31, the design of the limit holes allows the second support rod 322 to retract a certain distance, and at the same time the spring is compressed for energy dissipation, which not only extends the service life of the buffer plate 31 but also improves the deceleration effect on the slag stones.

[0035] Of course, in other embodiments, only the locking member 324 may be provided between the first support rod 321 and the second support rod 322 to adjust the inclination angle of the buffer plate 31.

[0036] In other embodiments, the telescopic support assembly 32 may be an elastic member. The elastic member is arranged on the inner wall of the chute 1, and the buffer plate 31 is supported on the elastic member. The top end of the buffer plate 31 is hinged to the inner wall of the chute 1. When the slag stones fall onto the buffer plate 31, the buffer plate 31 rotates downward by a certain angle around the hinge point, causing the elastic member to be compressed, thereby dissipating part of the energy generated during the sliding of the slag stones, reducing the speed and impact force when the slag stones slide out, and also being beneficial to extending the service life of the buffer plate 31. The elastic member may be a spring or other elastic members such as rubber pads, and will not be elaborated herein.

[0037] For specific reference, see Figure 2 and Figure 6, Further, in this embodiment, the cover plate 5 is a steel grating plate, which enables the observation of the sliding condition of the slag and stones in the chute 1 through the cover plate 5 for timely adjustment. The cover plate 5 is connected to the chute 1 by bolts, which is convenient for maintenance and replacement of the cover plate 5.

[0038] Further, in this embodiment, the chute 1 is fixed to the fixing frame 2 by bolts. The chute 1 includes a plurality of sequentially detachable sections. At least two side buffer components 3 and one middle buffer component 4 are arranged in each section. This is not only convenient for the installation of the side buffer components 3 and the middle buffer component 4 during manufacturing, but also easy to replace and maintain the chute 1 and the fixing frame 2, saving maintenance costs. Moreover, it is possible to select an appropriate number of sections for assembly according to the length of different inclined shafts. It should be noted that the number of the side buffer components 3 and the middle buffer component 4 in each section can be the same or different, and can be set as required. Although the present utility model has been disclosed above with preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present utility model, or modify it into an equivalent embodiment with equivalent changes, without departing from the scope of the technical solution of the present utility model. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model without departing from the content of the technical solution of the present utility model shall fall within the scope of protection of the technical solution of the present utility model.

Claims

1. A slag sliding device for tunnel construction, characterized in that: The invention comprises a fixing frame (2), a chute (1), a side buffer assembly (3), a middle buffer assembly (4) and a cover plate (5), wherein the fixing frame (2) is fixed in a tunnel, the chute (1) is arranged on the fixing frame (2), a plurality of side buffer assemblies (3) are provided, each of the side buffer assemblies (3) is arranged at intervals along the extension direction of the chute (1) and is staggeredly arranged on the inner walls of the chute (1) on both sides opposite to each other, the cover plate (5) is covered on the top of the chute (1), and the middle buffer assembly (4) connects the cover plate (5) and the bottom of the chute (1).

2. The slag sliding device for tunnel construction according to claim 1, characterized in that: The middle buffer component (4) is provided between each pair of adjacent side buffer components (3).

3. The slag sliding device for tunnel construction according to claim 2, characterized in that: The middle buffer assembly (4) comprises a plurality of buffer chains (41), each of the buffer chains (41) connecting the cover plate (5) and the bottom of the chute (1), and arranged at intervals along the width direction of the chute (1).

4. The slag sliding device for tunnel construction according to claim 3, characterized in that: The buffer chain (41) is arranged obliquely relative to the bottom wall of the chute (1).

5. The slag sliding device for tunnel construction according to claim 4, characterized in that: The buffer chain (41) is provided with a buffer sheet (6).

6. The slag sliding device for tunnel construction according to claim 5, characterized in that: A plurality of buffer plates (6) are provided on the buffer chain (41), and are arranged at intervals along the length direction of the buffer chain (41).

7. The slag sliding device for tunnel construction according to any one of claims 1 to 6, characterized in that: The side buffer assembly (3) comprises a buffer plate (31), and the buffer plate (31) is obliquely arranged on the inner wall of the chute (1).

8. The slag sliding device for tunnel construction according to claim 7, characterized in that: The side buffer assembly (3) further comprises a telescopic support assembly (32); the buffer plate (31) is hinged to the inner wall of the chute (1); and the telescopic support assembly (32) is arranged between the chute (1) and the buffer plate (31).

9. The slag sliding device for tunnel construction according to claim 7, characterized in that: The telescopic support assembly (32) comprises a first support rod (321) and a second support rod (322) which are movably sleeved together, wherein the first support rod (321) is hinged to the chute (1), and the second support rod (322) is hinged to the buffer plate (31), and an elastic member (323) and / or a locking member (324) for locking the first support rod (321) and the second support rod (322) are provided between the first support rod (321) and the second support rod (322).

10. The slag sliding device for tunnel construction according to any one of claims 1 to 6, characterized in that: The cover plate (5) is a steel grid plate.

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