Movable water pumping and draining device for tunnel construction

CN120701405BActive Publication Date: 2026-08-11中色十二冶金建设有限公司
View PDF 2 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-07-22
Publication Date
2026-08-11

AI Technical Summary

Technical Problem

[0003]目前的排水装置有多数装置的水泵固定安装于推车,使得装置的抽水口无法根据积水深度灵活调节高度,虽然部分新型装置尝试通过升降机构(如螺纹杆+电机)实现高度调节,但结构复杂且耗电量大,进而使得装置的抽水口需在外部动力下调节高度,增加了装置的能耗

Benefits of technology

通过自调节组件的设置,先利用浮筒在水面上的浮力将过滤罩刚好没入水面下,再利用滑块与轨道的关系,让浮筒在水面上能够保持平稳,使得过滤罩能够平稳地随水位变化而移动,进而使得排水装置的抽水口能在无需外部动力的情况下随积水深度自动升降,降低装置的能耗。

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN120701405B_ABST
    Figure CN120701405B_ABST
Patent Text Reader

Abstract

This invention discloses a mobile drainage device for tunnel construction, relating to the technical field of tunnel construction equipment. It includes a vehicle body and a tracked device, and further comprises: a self-adjusting component mounted on the vehicle body for automatically raising and lowering the water inlet according to the water depth; a shock-absorbing component mounted on the vehicle body; a water-pumping component mounted on the shock-absorbing component; a collection component mounted on the shock-absorbing component for collecting filtered stones and silt; a first filter component mounted on the collection component; and a second filter component mounted on the collection component. The device first utilizes the buoyancy of a float on the water surface to submerge the filter cover just below the water surface. Then, by utilizing the relationship between the slider and the track, the float remains stable on the water surface, allowing the filter cover to move smoothly with changes in water level. This enables the water inlet of the drainage device to automatically raise and lower with the water depth without external power, reducing the device's energy consumption.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This invention relates to the field of tunnel construction equipment technology, and in particular to a mobile pumping and drainage device for tunnel construction. Background Technology

[0002] Tunnels are underground structures built within mountains, serving as essential infrastructure for laying railways, constructing subways, and building highways under specific conditions. With the rapid advancement of infrastructure construction in my country, tunnel engineering, as a crucial component of modern transportation networks, has seen its construction scale continuously expand. During tunnel construction, groundwater infiltration can lead to water accumulation, especially in inclined shaft tunnel construction where backslope pumping and drainage are indispensable. Failure to address this promptly will severely impact project progress and construction safety. Current pumping and drainage techniques involve excavating a reservoir within the tunnel, pumping wastewater from the tunnel into the reservoir, and then using a drainage pump connected to steel pipes to discharge the water from the reservoir outside the tunnel for treatment.

[0003] Currently, most drainage devices have their water pumps fixedly installed on a trolley, making it impossible to flexibly adjust the height of the device's suction port according to the depth of the accumulated water. Although some new devices attempt to achieve height adjustment through lifting mechanisms (such as threaded rods + motors), the structure is complex and consumes a lot of electricity, which in turn requires external power to adjust the height of the device's suction port, increasing the device's energy consumption. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a mobile pumping and drainage device for tunnel construction, which aims to solve the technical problem that the pumping port of the above-mentioned device needs to be adjusted in height under external power, which increases the energy consumption of the device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A mobile pumping and drainage device for tunnel construction includes a vehicle body, a tracked device, and further includes: A self-adjusting component is installed on the vehicle body for the water inlet to automatically rise and fall with the depth of the accumulated water; The shock absorption assembly is installed on the vehicle body to buffer the vibrations generated when the device is driving or operating; A water pumping assembly, mounted on the shock-absorbing assembly, is used for water pumping. A collection component, mounted on the shock-absorbing component, is used to collect the filtered stones and silt. A first filtration component is disposed on the collection component for filtering stones in the water; The second filtration component is disposed on the collection component and is used to filter silt and sand in the water.

[0006] Preferably, the self-adjusting component includes: The bracket is fixedly connected to the vehicle body; The track is fixedly connected to the bracket; The slider is slidably connected to the track. The measuring rod is fixedly connected to the track; The float is fixedly connected to the slider.

[0007] Preferably, the shock absorption assembly includes: The first shock-absorbing spring is mounted on the vehicle body and is fixedly connected to the vehicle body; The telescopic rod is fixedly connected to the vehicle body; The platform is fixedly connected to the first shock-absorbing spring and also fixedly connected to the telescopic rod. The mounting frame is set on the platform and fixedly connected to the platform; The second damping spring is fixedly connected to the platform; The mounting plate is slidably connected to the mounting frame, and the mounting plate is fixedly connected to the second shock-absorbing spring.

[0008] Preferably, the pumping assembly includes: The mounting base is disposed on the mounting plate and is fixedly connected to the mounting plate; A water pump is detachably connected to the mounting base; The first water inlet pipe is installed on the water pump and is detachably connected to the water pump. The filter box is fixedly connected to the platform; A transport trough is provided on the filter box; The second water inlet pipe is fixedly connected to the filter box; A flexible hose, detachably connected to the second water inlet pipe; The filter cover is fixedly connected to the telescopic hose.

[0009] Preferably, the collection component includes: A drawer is provided on the filter box and is slidably connected to the filter box; An iron plate is fixedly connected to the drawer; A first electromagnet is fixedly connected to the filter box, and the first electromagnet is magnetically connected to the iron plate; A sediment collection trough is provided on the drawer; A stone collection trough is provided on the drawer.

[0010] Preferably, the first filtering component includes: A stone filtration device is slidably connected to the filter box; A stone collection chamber is provided on the filter box, and the stone collection chamber is in communication with the transport trough; The first sealing plate is slidably connected to the filter box; The second electromagnet is fixedly connected to the filter box; A first spring is disposed on the second electromagnet and is fixedly connected to the second electromagnet; The first gate is slidably connected to the filter box, the first gate is fixedly connected to the first spring, and the first gate is magnetically connected to the second electromagnet.

[0011] Preferably, the second filtering component includes: A sediment filtration device is installed on the filter box and is slidably connected to the filter box; A sand collection chamber is provided on the filter box, and the sand collection chamber is in communication with the transport trough; The second sealing plate is disposed on the filter box and is slidably connected to the filter box; The third electromagnet is fixedly connected to the filter box; The second spring is disposed on the third electromagnet and is fixedly connected to the third electromagnet; The second gate is slidably connected to the filter box, the second gate is fixedly connected to the second spring, and the second gate is magnetically connected to the third electromagnet.

[0012] Preferably, the measuring rod is slidably connected to the slider, and the surface of the measuring rod is engraved with graduations.

[0013] Preferably, the float is fixedly connected to the filter cover, and the inner surface of the float is in close contact with the telescopic hose.

[0014] Preferably, both the first water inlet pipe and the second water inlet pipe coincide with the axis of the transport trough.

[0015] Preferably, the sediment filtration device is located at the junction of the sediment collection chamber and the transport trough.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: By using the self-adjusting components, the buoyancy of the float on the water surface is used to submerge the filter cover just below the water surface. Then, by using the relationship between the slider and the track, the float can remain stable on the water surface, allowing the filter cover to move smoothly with changes in water level. This enables the water inlet of the drainage device to automatically rise and fall with the water depth without the need for external power, reducing the energy consumption of the device. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A three-dimensional structural schematic diagram of a movable pumping and drainage device for tunnel construction is shown.

[0019] Figure 2 A first cross-sectional view of a movable pumping and drainage device for tunnel construction is shown.

[0020] Figure 3 A second cross-sectional view of a movable pumping and drainage device for tunnel construction is shown.

[0021] Figure 4 A third cross-sectional view of a movable pumping and drainage device for tunnel construction is shown.

[0022] Figure 5 A fourth cross-sectional view of a movable pumping and drainage device for tunnel construction is shown.

[0023] Figure 6 It shows Figure 5 A magnified view of a portion of point A in the middle.

[0024] Figure 7 It shows Figure 5 A magnified view of a portion of point B in the middle.

[0025] Figure 8 A fifth cross-sectional view of a movable pumping and drainage device for tunnel construction is shown.

[0026] Figure 9 It shows Figure 8 A magnified view of a portion of point C.

[0027] Figure 10 It shows Figure 8 A magnified view of a portion of point D.

[0028] Legend: 1. Vehicle body; 2. Track device; 3. Bracket; 4. Rail; 5. Slider; 6. Measuring rod; 7. Float; 8. First shock-absorbing spring; 9. Telescopic rod; 10. Platform; 11. Mounting frame; 12. Second shock-absorbing spring; 13. Mounting plate; 14. Mounting base; 15. Water pump; 16. First water inlet pipe; 17. Filter box; 18. Transport trough; 19. Second water inlet pipe; 20. Telescopic hose; 21. Filter cover; 22. Drawer; 23. Iron plate; 24. First electromagnet; 25. Sediment collection trough; 26. Stone collection trough; 27. Stone filtration device; 28. Stone collection chamber; 29. ​​First sealing plate; 30. Second electromagnet; 31. First spring; 32. First gate; 33. Sediment filtration device; 34. Sand collection chamber; 35. Second sealing plate; 36. Third electromagnet; 37. Second spring; 38. Second gate. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0031] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] Reference Figures 1 to 10 An embodiment of a movable drainage device for tunnel construction according to the present invention will be further described.

[0034] A mobile drainage device for tunnel construction includes a vehicle body 1, a tracked device 2, and further includes: A self-adjusting component, mounted on vehicle body 1, is used to automatically raise and lower the water inlet according to the water depth. The self-adjusting component includes: Bracket 3 is fixedly connected to vehicle body 1; Track 4 is fixedly connected to bracket 3; Slider 5 is slidably connected to track 4; Measuring rod 6 is fixedly connected to track 4. Measuring rod 6 is slidably connected to slider 5, and the surface of measuring rod 6 is engraved with scale. The float 7 is fixedly connected to the slider 5. The float 7 is fixedly connected to the filter cover 21, and the inner surface of the float 7 is in close contact with the telescopic hose 20.

[0035] The filter cover 21 is completely submerged in the water, and under the buoyancy of the fixedly connected float 7, the filter cover 21 is kept just completely submerged below the water surface. Since the float 7 is fixed on the slider 5 that is slidably connected to the track 4, the water inlet where the filter cover 21 is located will not tilt and protrude above the water surface. Furthermore, the water inlet where the filter cover 21 is located will lower as the water level decreases due to the buoyancy of the float 7, thereby achieving an automatic adjustment effect.

[0036] By setting up the self-adjusting components, the buoyancy of the float 7 on the water surface is used to submerge the filter cover 21 just below the water surface. Then, by using the relationship between the slider 5 and the track 4, the float 7 can remain stable on the water surface, so that the filter cover 21 can move smoothly with the water level. This allows the water inlet of the drainage device to automatically rise and fall with the water depth without the need for external power, thus reducing the energy consumption of the device.

[0037] Reference Figures 1 to 10 A shock-absorbing assembly, installed on the vehicle body 1, is used to buffer vibrations generated during vehicle travel or operation. The shock-absorbing assembly includes: The first shock absorber spring 8 is mounted on the vehicle body 1 and is fixedly connected to the vehicle body 1; Telescopic rod 9 is fixedly connected to vehicle body 1; Platform 10 is fixedly connected to the first shock-absorbing spring 8 and to the telescopic rod 9; Mounting frame 11 is set on platform 10 and fixedly connected to platform 10; The second shock-absorbing spring 12 is fixedly connected to the platform 10; Mounting plate 13 is slidably connected to mounting frame 11, and mounting plate 13 is fixedly connected to second shock absorber spring 12.

[0038] A pumping assembly, mounted on the shock-absorbing assembly, is used for pumping water. The pumping assembly includes: Mounting base 14 is mounted on mounting plate 13 and is fixedly connected to mounting plate 13; A water pump 15 is detachably connected to a mounting base 14; The first water inlet pipe 16 is installed on the water pump 15 and is detachably connected to the water pump 15. The filter box 17 is fixedly connected to the platform 10; The transport trough 18 is set on the filter box 17, and the first water inlet pipe 16 and the second water inlet pipe 19 are both aligned with the axis of the transport trough 18. The second water inlet pipe 19 is fixedly connected to the filter box 17; The telescopic hose 20 is detachably connected to the second water inlet pipe 19; The filter cover 21 is fixedly connected to the telescopic hose 20.

[0039] When the water pump 15 is started, the accumulated water is filtered out of the filter cover 21, and the large rocks are pumped into the telescopic hose 20. The water is then pumped from the telescopic hose 20 to the second water inlet pipe 19, then into the transport trough 18, and finally into the first water inlet pipe 16. The water then enters the water pump 15 from the first water inlet pipe 16, and is then transported to the outside of the tunnel through the pipe connected to the water outlet of the water pump 15, thus achieving the pumping effect.

[0040] Reference Figures 1 to 10 A collection component, mounted on the shock-absorbing component, is used to collect the filtered stones and silt. The collection component includes: Drawer 22 is mounted on filter box 17 and is slidably connected to filter box 17; Iron plate 23 is fixedly connected to drawer 22; The first electromagnet 24 is fixedly connected to the filter box 17, and the first electromagnet 24 is magnetically connected to the iron plate 23. A sediment collection trough 25 is installed on drawer 22; A stone collection trough 26 is installed on drawer 22.

[0041] When the collection tank 25 (or sediment collection tank 25) is full of stones (or sediment), the first electromagnet 24 is turned off. At this time, the iron plate 23 loses its magnetic restraint, so the drawer 22, which is fixedly connected to the iron plate 23, is pulled out and the filter box 17, which slides with the drawer 22, is dehydrated and formed into blocks, which are then used directly for tunnel backfilling, thereby achieving the recycling effect.

[0042] A first filtration component, disposed on the collection component, is used to filter stones in the water. The first filtration component includes: The stone filter device 27 is slidably connected to the filter box 17; Stone collection chamber 28 is provided on filter box 17, and stone collection chamber 28 is connected to transport trough 18; The first sealing plate 29 is slidably connected to the filter box 17; The second electromagnet 30 is fixedly connected to the filter box 17; The first spring 31 is disposed on the second electromagnet 30 and is fixedly connected to the second electromagnet 30; The first gate 32 is slidably connected to the filter box 17, the first gate 32 is fixedly connected to the first spring 31, and the first gate 32 is magnetically connected to the second electromagnet 30.

[0043] When the stones in the transport trough 18 are about to fill the stone collection chamber 28, the first sealing plate 29 is pushed to completely isolate the transport trough 18 from the stone collection chamber 28. The second electromagnet 30 is activated. Under the magnetic force of the second electromagnet 30, the first gate 32 moves toward the second electromagnet 30 until all the stones in the stone collection chamber 28 fall into the stone collection trough 26, thus completing the effect of filtering the stones.

[0044] Reference Figures 1 to 10 A second filter assembly, disposed on the collection assembly, is used to filter sediment in the water. The second filter assembly includes: The sediment filtration device 33 is installed on the filter box 17 and is slidably connected to the filter box 17. The sediment filtration device 33 is located at the junction of the sand collection chamber 34 and the transport trough 18. The sand collection chamber 34 is installed on the filter box 17 and is connected to the transport trough 18; The second sealing plate 35 is disposed on the filter box 17 and is slidably connected to the filter box 17. The third electromagnet 36 is fixedly connected to the filter box 17; The second spring 37 is disposed on the third electromagnet 36 and is fixedly connected to the third electromagnet 36; The second gate 38 is slidably connected to the filter box 17, the second gate 38 is fixedly connected to the second spring 37, and the second gate 38 is magnetically connected to the third electromagnet 36.

[0045] When the sediment in the transport trough 18 is about to fill the sand collection chamber 34, the second sealing plate 35 is pushed to completely isolate the transport trough 18 from the sand collection chamber 34. The third electromagnet 36 is activated, and under the magnetic force of the third electromagnet 36, the second gate 38 moves toward the third electromagnet 36 until the sediment in the sand collection chamber 34 falls completely into the sediment collection tank 25, thus completing the sediment filtration process.

[0046] Working principle: Refer to Figures 1 to 10 The track device 2 is activated, and the movement of the track device 2 drives the vehicle body 1 to the edge of the water accumulation. The track device 2 is then deactivated, and the water pump 15 is activated. The water accumulation is filtered out of the filter cover 21, large stones are pumped into the telescopic hose 20, and then pumped from the telescopic hose 20 to the second water inlet pipe 19. The water then enters the transport trough 18 and passes through the stone filter device 27 and the mud and sand filter device 33 to filter out stones and mud and sand. Finally, the water enters the first water inlet pipe 16 and then enters the water pump 15. The water is then transported to the outside of the tunnel through the pipe connected to the water outlet of the water pump 15, thus achieving the water pumping effect and reducing the risk of clogging the water pump 15. At this time, the filter cover 21 is completely submerged in the water, and under the buoyancy of the fixedly connected float 7, the filter cover 21 is kept just completely submerged in the water. Since the float 7 is fixed on the slider 5 that is slidably connected to the track 4, the water inlet where the filter cover 21 is located will not tilt and protrude from the water surface. Furthermore, the water inlet where the filter cover 21 is located will be lowered as the water level decreases due to the buoyancy of the float 7, thereby achieving an automatic adjustment effect. In addition, the pumping speed can be calculated based on the distance the slider 5 moves on the measuring rod 6 and the pumping time, and the operating speed of the water pump 15 can be reasonably adjusted according to the pumping speed and actual needs. Reference Figures 1 to 10 When the stones (or silt) in the transport trough 18 are about to fill the stone collection chamber 28 (or sand collection chamber 34), the first sealing plate 29 (or the second sealing plate 35) is pushed so that the first sealing plate 29 (or the second sealing plate 35) completely isolates the transport trough 18 from the stone collection chamber 28 (or sand collection chamber 34). The second electromagnet 30 (or the third electromagnet 36) is activated. Under the magnetic force of the second electromagnet 30 (or the third electromagnet 36), the first gate 32 (or the second gate 38) moves towards the second electromagnet 30 (or the third electromagnet 36) until the stones (or silt) in the stone collection chamber 28 (or sand collection chamber 34) completely fall into the stone collection trough 26 (or sand collection trough 25), thus completing the filtration process. When the collection tank (or sediment collection tank 25) is full of stones (or sediment), the first electromagnet 24 is turned off. At this time, the iron plate 23 loses its magnetic restraint, so the drawer 22, which is fixedly connected to the iron plate 23, is pulled out and the filter box 17, which slides with the drawer 22, is dehydrated and formed into blocks, which are then used directly for tunnel backfilling, thereby achieving the recycling effect.

[0047] The above description of the embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A mobile water pumping device for tunnel construction, comprising a vehicle body (1), a crawler device (2), characterized in that, Also includes: A self-adjusting component is installed on the vehicle body (1) for automatically raising and lowering the water inlet according to the water depth; The self-adjusting component includes: The bracket (3) is fixedly connected to the vehicle body (1); The track (4) is fixedly connected to the bracket (3); The slider (5) is slidably connected to the track (4); Measuring rod (6) is fixedly connected to the track (4); The float (7) is fixedly connected to the slider (5); A shock-absorbing assembly is installed on the vehicle body (1) to buffer the vibrations generated when the device is in motion or working. A water pumping assembly, mounted on the shock-absorbing assembly, is used for water pumping. A collection component, mounted on the shock-absorbing component, is used to collect the filtered stones and silt. A first filtration component is disposed on the collection component for filtering stones in the water; The second filtration component is disposed on the collection component and is used to filter silt and sand in the water; The shock absorption components include: The first shock absorber spring (8) is mounted on the vehicle body (1) and is fixedly connected to the vehicle body (1); Telescopic rod (9) is fixedly connected to the vehicle body (1); The platform (10) is fixedly connected to the first shock-absorbing spring (8) and fixedly connected to the telescopic rod (9); The mounting frame (11) is set on the platform (10) and fixedly connected to the platform (10); The second shock-absorbing spring (12) is fixedly connected to the platform (10); Mounting plate (13) is slidably connected to mounting frame (11), and mounting plate (13) is fixedly connected to second shock absorber spring (12); The pumping assembly includes: Mounting base (14) is disposed on mounting plate (13) and fixedly connected to mounting plate (13); A water pump (15) is detachably connected to the mounting base (14); The first water inlet pipe (16) is installed on the water pump (15) and is detachably connected to the water pump (15); The filter box (17) is fixedly connected to the platform (10); A transport trough (18) is provided on the filter box (17); The second water inlet pipe (19) is fixedly connected to the filter box (17); The telescopic hose (20) is detachably connected to the second water inlet pipe (19); The filter cover (21) is fixedly connected to the telescopic hose (20); The collection component includes: A drawer (22) is disposed on the filter box (17) and is slidably connected to the filter box (17); Iron plate (23) is fixedly connected to the drawer (22); The first electromagnet (24) is fixedly connected to the filter box (17), and the first electromagnet (24) is magnetically connected to the iron plate (23); A sediment collection trough (25) is provided on the drawer (22); A stone collection trough (26) is provided on the drawer (22); The first filtering component includes: The stone filtration device (27) is slidably connected to the filter box (17); A stone collection chamber (28) is provided on the filter box (17), and the stone collection chamber (28) is in communication with the transport trough (18); The first sealing plate (29) is slidably connected to the filter box (17); The second electromagnet (30) is fixedly connected to the filter box (17); The first spring (31) is disposed on the second electromagnet (30) and is fixedly connected to the second electromagnet (30); The first gate (32) is slidably connected to the filter box (17), the first gate (32) is fixedly connected to the first spring (31), and the first gate (32) is magnetically connected to the second electromagnet (30).

2. The mobile water pumping device for tunnel construction according to claim 1, wherein The second filtering component includes: A sediment filtration device (33) is installed on the filter box (17) and is slidably connected to the filter box (17); A sand collection chamber (34) is provided on the filter box (17), and the sand collection chamber (34) is connected to the transport trough (18); The second sealing plate (35) is disposed on the filter box (17) and is slidably connected to the filter box (17); The third electromagnet (36) is fixedly connected to the filter box (17); The second spring (37) is disposed on the third electromagnet (36) and is fixedly connected to the third electromagnet (36); The second gate (38) is slidably connected to the filter box (17), the second gate (38) is fixedly connected to the second spring (37), and the second gate (38) is magnetically connected to the third electromagnet (36).

3. The mobile water pumping device for tunnel construction according to claim 2, wherein The measuring rod (6) is slidably connected to the slider (5), and the surface of the measuring rod (6) is engraved with a scale.

4. The mobile water pumping device for tunnel construction according to claim 3, wherein, The float (7) is fixedly connected to the filter cover (21), and the inner surface of the float (7) is in close contact with the telescopic hose (20).

5. The mobile water pumping device for tunnel construction of claim 4, wherein, The first water inlet pipe (16) and the second water inlet pipe (19) both coincide with the axis of the transport trough (18).

6. The mobile water pumping device for tunnel construction of claim 5, wherein, The silt filtration device (33) is located at the junction of the sand collection chamber (34) and the transport trough (18).

Citation Information

Patent Citations

  • Magnet type gas collection and automatic water draining device

    CN203730071U

  • Water intake device floats

    CN205804478U