A water jet shield cutter head for cutting piles in gravel stratum
By designing a pile cutting blade of the water jet shield machine in the gravel formation, the combined movement of the sliding sleeve and arc plate is used to achieve the crushing and push of the lonely stone and hard stone, the problem of slag discharge openings in the gravel formation is solved, the construction efficiency is improved and the risk of tunnel settlement is reduced.
Patent Information
- Application Number
- CN202510404767.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2045-04-02
AI Technical Summary
In the gravel formation, it is difficult for the water jet shield to effectively crush the lonely stones and hard rocks, resulting in blockage of the slag discharge opening, affecting the construction efficiency, and the unbreaked stones are difficult to discharge, increasing the risk of settlement after the tunnel pipe section is laid.
A pile cutting cutter plate of a gravel formation water jet shield machine is designed. Through the coordinated movement of the sliding sleeve and the arc plate, the combined cutting method of water cutting and hob cut is used to crush the lonely stone and hard stone, and push it to the tunnel wall to reinforce it to avoid blockage. At the same time, the cross rod is used to support large pieces of gravel to improve the efficiency of slag discharge.
Effectively crush the lonely stones and hard rocks in the gravel formation, prevent the slag discharge openings from being blocked, improve construction efficiency, and reinforce the tunnel walls through gravel to reduce the risk of tunnel settlement.
Smart Images
Figure CN119914304B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of shield cutting pile cutters, and particularly relates to a water jet shield cutter for cutting piles in a gravel stratum. Background Art
[0002] Water jet cutting of piles uses high-pressure water jet cutting technology to assist the metal cutters of existing shield machines / TBMs to cut the original high-strength rocks or reinforced concrete structures with high strength underground. High-pressure water flow is used to erode or cut high-strength hard rocks or reinforced concrete, thereby reducing the wear of metal cutters and improving the construction efficiency of the project. When carrying out water jet shield construction in a gravel stratum, due to the poor stability of the gravel stratum, the boulders and hard rocks in the gravel stratum are not easily broken by the cutter head of the shield machine. Only a part of these boulders and hard rocks can be discharged by the traditional spiral slag discharger, and some large boulders and hard rocks cannot be discharged from the spiral slag discharger. These large boulders and hard rocks are prone to accumulate in front of the cutter head. When there are too many boulders and hard rocks, it is easy to cause the slag discharge port of the shield cutter head to be blocked, thus affecting the normal tunneling of the shield machine; if the hard-to-discharge crushed stones can be used for the reinforcement of the tunnel wall, the settlement risk after the tunnel segments are laid can be significantly reduced. Summary of the Invention
[0003] The purpose of the present invention is to solve the deficiencies existing in the prior art, and to propose a water jet shield cutter for cutting piles in a gravel stratum, so as to solve the problems existing in the prior art.
[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:
[0005] A water jet shield cutter for cutting piles in a gravel stratum includes a cutter head. One end of the cutter head is fixedly connected to a box body. A vertical rod is arranged in the box body, and the vertical rod can reciprocate axially along the cutter head. A first sliding sleeve is slidably connected to the vertical rod. The first sliding sleeve is fixedly connected to a first arc-shaped plate through a first support rod. A water cutting nozzle is installed on the first arc-shaped plate. A number of first cross bars are arranged on the first arc-shaped plate. The first sliding sleeve reciprocates along the vertical rod through a driving device. A notch is arranged on the outer circumferential surface of the cutter head. One side of the notch is provided with an inclined surface, and a guide groove is arranged on the other side of the notch. An arc-shaped baffle is slidably connected in the guide groove, and the arc-shaped baffle is arranged corresponding to the inclined surface.
[0006] Preferably, a second sliding sleeve is also slidably connected to the vertical rod. The second sliding sleeve is fixedly connected to a second arc-shaped plate through a second support rod. A water cutting nozzle is also installed on the second arc-shaped plate.
[0007] Preferably, both ends of the first arc-shaped plate are rotatably connected to a rotating rod through a spring hinge. The rotating rod can only rotate upward around the outer end of the first arc-shaped plate. The first cross bar is fixed on one side of the two rotating rods.
[0008] Preferably, the first sliding sleeve and the second sliding sleeve are driven by a driving device, which can move the first sliding sleeve and the second sliding sleeve along the vertical rod towards or away from each other.
[0009] Preferably, the driving device includes an axial oil cylinder. The inner wall of the box body is fixedly connected to the axial oil cylinder. The telescopic end of the axial oil cylinder is fixedly connected to an axial sliding block. The axial sliding block is hinged to a first connecting rod and a second connecting rod. The first connecting rod is hinged to the first sliding sleeve, and the second connecting rod is hinged to the second sliding sleeve.
[0010] Preferably, a partition is provided in the middle of the box body. The partition is provided with a through groove, and the first connecting rod and the second connecting rod pass through the through groove.
[0011] Preferably, side sliding grooves are provided at the upper ends of the side walls of the box body. Side sliding blocks are slidably connected in the side sliding grooves. Support rods are respectively fixedly connected to both sides of the upper end of the vertical rod, and the support rods are fixedly connected to the side sliding blocks.
[0012] Preferably, a transverse sliding groove is provided at the bottom of the box body. A transverse sliding block is slidably connected in the transverse sliding groove. A transverse oil cylinder is fixedly connected to the inner end of the transverse sliding groove, and the vertical rod is fixedly connected to the upper side of the transverse sliding block.
[0013] The advantages of the present invention are as follows: The cutting pile cutter head of the water jet shield machine for sandy gravel stratum provided by the present invention reciprocally slides the second sliding sleeve and the first sliding sleeve on the vertical rod, and cooperates with the rotation of the cutter head to cut the residual piles and waste piles in the sandy gravel stratum, so that the pile columns are cut and broken. The broken pieces of the pile columns cut by the water jet cutter, fractured by the hob, and cracked are mixed with the boulders and hard rocks in the sandy gravel stratum. Part of them are discharged by the traditional spiral slag discharge device, and the other part forms a support for the large broken stones through a number of cross bars and the gaps between adjacent cross bars. The small broken stones and mud blocks fall from between adjacent cross bars. By pushing the boulders, hard rocks, and large cut pieces of pile columns into the tunnel wall around the face of the shield tunnel, on the one hand, the large broken stones that are likely to cause blockage of the spiral slag discharge device and the boulders not cut by the water jet cutter are pushed and extruded onto the tunnel inner wall, making the shield slag discharge not easily blocked, and on the other hand, it plays a role in strengthening the soft sandy gravel stratum. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 is the basic structural schematic diagram of the present invention;
[0015] Figure 2 is Figure 1 the partial enlarged view at F in
[0016] Figure 3 is the basic structural schematic diagram of the box body of the present invention;
[0017] Figure 4 is the partial cross-sectional view of the box body of the present invention;
[0018] Figure 5It is a side sectional view of the box body of the present invention;
[0019] Figure 6 It is a schematic diagram of the state where the second sliding sleeve and the first sliding sleeve of the present invention are close to each other;
[0020] Figure 7 It is a connection structure diagram of the first sliding sleeve and the first arc-shaped rod of the present invention;
[0021] Figure 8 It is a connection structure diagram of the second sliding sleeve and the second arc-shaped rod of the present invention. Specific Embodiments
[0022] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0023] As Figures 1 to 8 shown, a water jet shield cutter head for gravel stratum provided in this embodiment includes a cutter head 1. One end of the cutter head 1 is fixedly connected to a box body 2. A horizontal chute 21 is provided at the bottom of the box body 2. A horizontal slider 22 is slidably connected in the horizontal chute 21. A horizontal oil cylinder 23 is fixedly connected to the inner end of the horizontal chute 21. A vertical rod 24 is fixedly connected to the upper side of the horizontal slider 22. A first sliding sleeve 26 is slidably connected to the vertical rod 24. The first sliding sleeve 26 is fixedly connected to a first arc-shaped plate 28 through a first support rod 261. A water cutting nozzle 27 is installed on the first arc-shaped plate 28. A number of first cross bars 29 are provided on the first arc-shaped plate 28. The first sliding sleeve 26 reciprocally slides along the vertical rod 24 through a driving device. A notch 5 is provided on the outer circumferential surface of the cutter head 1. An inclined surface 51 is provided on one side of the notch 5. A guiding groove is provided on the other side of the notch 5. An arc-shaped baffle 52 is slidably connected in the guiding groove. The arc-shaped baffle 52 is correspondingly arranged with the inclined surface 51. When this embodiment is in use, while the cutter head 1 rotates, the driving device drives the first sliding sleeve 26 to reciprocally slide along the vertical rod 24, and the water cutting nozzle 27 follows the first sliding sleeve 26 to reciprocally slide. In this way, the spraying range of the water cutting nozzle 27 can be increased, so as to cut the residual piles and waste piles in the gravel stratum, and the pile columns are cut and broken.
[0024] When the first sliding sleeve 26 slides along the vertical rod 24, the first arc-shaped plate 28 and the first cross bar 29 also move accordingly. The first cross bar 29 can lift the large solitary stones, hard stones, and cut fragments of large pile columns in the box body 2 and push them out from the notch 5. Due to the continuous rotation of the cutter head, under the action of the inclined plane 51, the solitary stones and hard stones are squeezed to the periphery of the tunnel. On the one hand, this can prevent excessive solitary stones, hard stones, and cut fragments of large pile columns from accumulating in front of the cutter head 1 and affecting the normal operation of the cutter head 1. On the other hand, the solitary stones, hard stones, and cut fragments of large pile columns are pushed into the tunnel wall inside the periphery of the shield tunnel face. The solitary stones, hard stones, and cut fragments of large pile columns can act as the role of coarse aggregate. During the later grouting, the solitary stones, hard stones, and cut fragments of large pile columns can play a role in strengthening the soft sandy gravel stratum.
[0025] The arc-shaped baffle 52 acts as an electric door, that is, the arc-shaped baffle 52 can seal or open the notch 5. The arc-shaped baffle 52 is driven by conventional power. When the first arc-shaped plate 28 and the first cross bar 29 approach the notch 5, the arc-shaped baffle 52 is retracted into the guide groove. When the first arc-shaped plate 28 and the first cross bar 29 leave the notch 5, the arc-shaped baffle 52 extends to block the notch 5.
[0026] As an implementation manner of the present invention, both ends of the first arc-shaped plate 28 are rotationally connected to the rotating rod 20 through spring hinges. The spring hinge belongs to the prior art and will not be described in detail here. The rotating rod 20 can only rotate upward around the outer end of the first arc-shaped plate 28. The first cross bar 29 is fixed on one side of the two rotating rods 20. A second sliding sleeve 25 is also slidably connected to the vertical rod 24. The second sliding sleeve 25 is fixedly connected to the second arc-shaped plate 281 through the second support rod 251. The second support rod 251 is arranged in a staggered manner with the first support rod 261. A water cutting nozzle 27 is also installed on the second arc-shaped plate 281. A second cross bar 291 is installed on the second arc-shaped plate 281. The first sliding sleeve 26 and the second sliding sleeve 25 are driven by a driving device, and the driving device can make the first sliding sleeve 26 and the second sliding sleeve 25 move towards or away from each other along the vertical rod 24.
[0027] As Figure 5 and Figure 6As shown in the figure, when the second sliding sleeve 25 and the first sliding sleeve 26 move away from each other on the vertical rod 24, the water jet cutting pile column and boulder form crushed stones of different sizes. The first cross bar 29 pushes the crushed stones outwards from the notch. When the second sliding sleeve 25 and the first sliding sleeve 26 move towards each other, the large crushed stones on the upper side of the second cross bar 291 are squeezed towards the first cross bar 29 (here the upper side is the direction of the tunnel periphery), causing the two rotating rods 20 to rotate and a channel to form in the middle (the cutting face is filled with slurry for balance or muck, and due to the slurry resistance at the 12 o'clock, 3 o'clock, 6 o'clock or 9 o'clock directions of the cutter head 1 on the box body 2, the crushed stones can be pushed outwards). Thus, the large crushed stones are moved from the middle of the tunnel section to the periphery (that is, the second cross bar 291 transfers the crushed stones above the first cross bar 29). When the second sliding sleeve 25 and the first sliding sleeve 26 move away from each other again on the vertical rod 24 (the second sliding sleeve 25 moves downwards and the first sliding sleeve 26 slides upwards), some of the crushed stones that are not fully chopped are squeezed into the tunnel periphery, playing a role in strengthening the formation and improving the pile cutting efficiency).
[0028] As an embodiment of the present invention, as Figures 1 to 6 shown, the driving device includes an axial oil cylinder 3. The inner wall of the box body 2 is fixedly connected with the axial oil cylinder 3. The telescopic end of the axial oil cylinder 3 is fixedly connected with an axial slider 31. The axial slider 31 is hinged to a first connecting rod 32 and a second connecting rod 33. The first connecting rod 32 is hinged to the second sliding sleeve 25, and the second connecting rod 33 is hinged to the first sliding sleeve 26.
[0029] The axial oil cylinder 3 pushes the axial slider 31 to move, causing the second sliding sleeve 25 and the first sliding sleeve 26 to slide as a whole. Through the reciprocating push of the transverse oil cylinder 23, due to the limitation of the axial slider 31, the second sliding sleeve 25 and the first sliding sleeve 26 approach or move away from each other. On the one hand, the second sliding sleeve 25 and the first sliding sleeve 26 move as a whole or separately, cooperating with the rotation of the cutter head 1, making the cutting line of the water jet cutting more refined, making the pile column cutting more fragmented and easier to discharge slag. On the other hand, the relative movement of the second sliding sleeve 25 and the first sliding sleeve 26 facilitates squeezing the large crushed stones towards the tunnel periphery.
[0030] As an embodiment of the present invention, as Figures 3 to 6 shown, a partition 4 is provided in the middle of the box body 2. The partition 4 is provided with a through groove 41. The first connecting rod 32 and the second connecting rod 33 pass through the through groove 41 to prevent the crushed stones from approaching the oil cylinder system at the rear side.
[0031] As an embodiment of the present invention, as Figures 1 to 2 shown, side sliding grooves 6 are provided at the upper ends of the side walls of the box body 2. Side sliding blocks 61 are slidably connected in the side sliding grooves 6. Support rods 62 are respectively fixedly connected to both sides of the upper end of the vertical rod 24. The support rods 62 are fixedly connected to the side sliding blocks 61 to form support and guidance for the upper end of the vertical rod 24.
[0032] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A cutting pile cutter head of a water jet shield machine for gravel stratum, comprising a cutter head (1), one end of the cutter head (1) is fixedly connected to a box body (2), a vertical rod (24) is arranged in the box body (2), and the vertical rod (24) can reciprocate axially along the cutter head (1), and is characterized in that: A first sliding sleeve (26) is slidably connected to the vertical rod (24). The first sliding sleeve (26) is fixedly connected to a first arc-shaped plate (28) through a first support rod (261). A water cutting nozzle (27) is installed on the first arc-shaped plate (28). A number of first cross rods (29) are arranged on the first arc-shaped plate (28). The first sliding sleeve (26) reciprocally slides along the vertical rod (24) through a driving device. A notch (5) is arranged on the outer circumferential surface of the cutter head (1). An inclined surface (51) is arranged on one side of the notch (5). A guiding groove is arranged on the other side of the notch (5). An arc-shaped baffle (52) is slidably connected in the guiding groove. The arc-shaped baffle (52) is arranged corresponding to the inclined surface (51). The first cross rod can lift large block boulders, hard stones, and cut fragments of large block pile columns in the box body and push them out through the notch. Under the action of the inclined surface, the large block boulders, hard stones, and cut fragments of large block pile columns are extruded to the periphery of the tunnel.
2. The cutter head for cutting piles of a water jet shield machine in a gravel stratum according to claim 1, characterized in that: A second sliding sleeve (25) is also slidably connected to the vertical rod (24). The second sliding sleeve (25) is fixedly connected to a second arc-shaped plate (281) through a second support rod (251). A water cutting nozzle (27) is also installed on the second arc-shaped plate (281). A second cross rod (291) is installed on the second arc-shaped plate (281).
3. The cutting pile cutter head of the water jet shield machine for sandy gravel stratum according to claim 2, wherein: Both ends of the first arc-shaped plate (28) are rotatably connected to a rotating rod (20) through spring hinges. The rotating rod (20) can only rotate upward around the outer end of the first arc-shaped plate (28). The first cross rod (29) is fixed on one side of the two rotating rods (20).
4. A cutting pile cutter head of a water jet shield machine for gravel stratum according to claim 3, characterized in that: The first sliding sleeve (26) and the second sliding sleeve (25) are driven by a driving device. The driving device can make the first sliding sleeve (26) and the second sliding sleeve (25) move towards or away from each other along the vertical rod (24).
5. The cutter head for cutting piles of a water jet shield machine in a gravel stratum according to claim 4, characterized in that: The driving device includes an axial oil cylinder (3). The inner wall of the box body (2) is fixedly connected to the axial oil cylinder (3). The telescopic end of the axial oil cylinder (3) is fixedly connected to an axial sliding block (31). The axial sliding block (31) is hinged to a first connecting rod (32) and a second connecting rod (33). The first connecting rod (32) is hinged to the first sliding sleeve (26). The second connecting rod (33) is hinged to the second sliding sleeve (25).
6. The cutting pile cutter head of the water jet shield machine for sandy gravel stratum according to claim 5, characterized in that: A partition plate (4) is arranged in the middle of the box body (2). The partition plate (4) is provided with a through groove (41). The first connecting rod (32) and the second connecting rod (33) pass through the through groove (41).
7. The cutting cutter head of a water jet shield machine for gravel stratum according to claim 6, wherein: Side sliding grooves (6) are arranged at the upper ends of the side walls of the box body (2). Side sliding blocks (61) are slidably connected in the side sliding grooves (6). Both sides of the upper end of the vertical rod (24) are respectively fixedly connected to support rods (62). The support rods (62) are fixedly connected to the side sliding blocks (61).
8. The cutting pile cutter head of the water jet shield machine for gravel stratum according to claim 1, wherein: A transverse sliding groove (21) is arranged at the bottom of the box body (2). A transverse sliding block (22) is slidably connected in the transverse sliding groove (21). A transverse oil cylinder (23) is fixedly connected to the inner end of the transverse sliding groove (21). The upper side of the transverse sliding block (22) is fixedly connected to the vertical rod (24).
Citation Information
Patent Citations
Underground obstacle cutting and removing device, and cutting and removing method thereof
JP1999081861A