Pile cutting cutterhead of gravel stratum water jet shield tunneling machine

Abstract

The invention discloses a gravel stratum water jet shield tunneling machine pile cutting cutterhead which comprises a cutterhead body, one end of the cutterhead body is fixedly connected with a box, a vertical rod is arranged in the box and can slide in the axial direction of the cutterhead body in a reciprocating mode, a first sliding sleeve is slidably connected to the vertical rod, and the first sliding sleeve is fixedly connected with a first arc-shaped plate through a first supporting rod. A plurality of first cross rods are arranged on the first arc-shaped plate, the first sliding sleeve slides along the vertical rod in a reciprocating mode through a driving device, a notch is formed in the outer circle face of the cutter head, an inclined face is arranged on one side of the notch, a guide groove is formed in the other side of the notch, an arc-shaped baffle is slidably connected into the guide groove, and the arc-shaped baffle and the inclined face are correspondingly arranged. According to the shield deslagging device, large broken stones which easily cause blockage of the spiral deslagging device and boulders which are not cut by a water jet are pushed and extruded on the inner wall of a tunnel, so that blockage is not easily caused during shield deslagging, and the effect of reinforcing a soft gravel stratum is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of shield pile cutting cutter discs, in particular to a sand and gravel stratum water jet shield machine pile cutting cutter disc. Background Art

[0002] Water jet pile cutting uses high-pressure water jet cutting technology and the existing shield machine / TBM metal cutter to assist each other in cutting the original underground high-strength high-strength rock or reinforced concrete structure, and uses high-pressure water flow to erode or cut high-strength hard rock or reinforced concrete, thereby reducing the loss of metal cutters and improving the construction efficiency of the project. When water jet shield construction is carried out in gravel strata, due to the poor stability of gravel strata, the isolated rocks and hard rocks in the gravel strata are not easy to be crushed by the shield machine cutter head. Only a part of these isolated rocks and hard rocks can be discharged by the traditional spiral slag discharger, and some large isolated rocks and hard rocks cannot be discharged from the spiral slag discharger. These large isolated rocks and hard rocks are easy to accumulate in front of the cutter head. When there are too many isolated rocks and hard rocks, it is easy to cause the slag discharge port of the shield cutter head to be blocked, thereby affecting the normal excavation of the shield machine; if the crushed stones that are not easy to discharge can be used for the reinforcement of the tunnel wall, the settlement risk after the laying of the tunnel segment can be significantly reduced. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a pile cutting cutter disc for a water jet shield machine in a gravel stratum, thereby solving the problems existing in the prior art.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions: A pile cutting cutter disc of a water jet shield machine in a gravel stratum comprises a cutter disc, one end of which is fixedly connected to a box body, a vertical rod is arranged in the box body, the vertical rod can slide back and forth along the axial direction of the cutter disc, a first sliding sleeve is slidably connected to the vertical rod, the first sliding sleeve is fixedly connected to a first arc plate through a first supporting rod, a water cutting nozzle is mounted on the first arc plate, a plurality of first cross rods are arranged on the first arc plate, the first sliding sleeve slides back and forth along the vertical rod through a driving device, a notch is arranged on the outer circular surface of the cutter disc, an inclined surface is arranged on one side of the notch, a guide groove is arranged on the other side of the notch, an arc baffle is slidably connected in the guide groove, and the arc baffle is arranged corresponding to the inclined surface.

[0005] Preferably, the vertical rod is also slidably connected to a second sliding sleeve, the second sliding sleeve is fixedly connected to the second arc-shaped plate through a second supporting rod, and a water cutting nozzle is also installed on the second arc-shaped plate.

[0006] Preferably, both ends of the first arc-shaped plate are rotatably connected to the rotating rod through a spring hinge, the rotating rod can only rotate upward around the outer end of the first arc-shaped plate, and the first cross bar is fixed on one side of the two rotating rods.

[0007] Preferably, the first sliding sleeve and the second sliding sleeve are driven by a driving device, and the driving device can make the first sliding sleeve and the second sliding sleeve move toward or away from each other along the vertical rod.

[0008] Preferably, the driving device includes an axial cylinder, the inner wall of the box body is fixedly connected to the axial cylinder, the telescopic end of the axial cylinder is fixedly connected to the axial slider, the axial slider is hingedly connected to the first connecting rod and the second connecting rod, the first connecting rod is hingedly connected to the first sleeve, and the second connecting rod is hingedly connected to the second sleeve.

[0009] Preferably, a partition is provided in the middle of the box body, and a through slot is provided on the partition, and the first connecting rod and the second connecting rod pass through the through slot.

[0010] Preferably, a side slide groove is provided at the upper end of the side wall of the box body, and a side slider is slidably connected in the side slide groove. Both sides of the upper end of the vertical rod are respectively fixedly connected to support rods, and the support rods are fixedly connected to the side slider.

[0011] Preferably, a transverse slide groove is provided at the bottom of the box body, a transverse slider is slidably connected in the transverse slide groove, a transverse oil cylinder is fixedly connected to the inner end of the transverse slide groove, and the upper side of the transverse slider is fixedly connected to the vertical rod.

[0012] The advantages of the present invention are as follows: the pile cutting cutter disc of a water jet shield machine in gravel stratum provided by the present invention slides back and forth on the vertical rod through the second sliding sleeve and the first sliding sleeve, and cooperates with the rotation of the cutter disc to cut the residual piles and waste piles in the gravel stratum, so that the pile column is cut and broken, and the pile column fragments obtained by water jet cutting, roller fracturing and collapse are mixed with isolated rocks and hard stones in the gravel stratum, part of which are discharged by a spiral slag discharger in a traditional manner, and the other part passes through a plurality of cross bars, and the gaps between adjacent cross bars form support for large pieces of broken stones, and small pieces of broken stones and mud fall from between adjacent cross bars. By pushing isolated rocks, hard stones and large pieces of pile column cut pieces into the tunnel wall outside the shield tunnel face, on the one hand, large pieces of broken stones that are easy to cause blockage of the spiral slag discharger and isolated rocks that are not cut by the water jet are pushed and squeezed on the inner wall of the tunnel, so that the shield slag discharge is not easy to be blocked, and on the other hand, the weak gravel stratum is reinforced. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a basic structural schematic diagram of the present invention; Figure 2 yes Figure 1 A local enlarged view of point F in FIG. Figure 3 It is a basic structural schematic diagram of the box body of the present invention; Figure 4 is a partial cross-sectional view of the box body of the present invention; Figure 5 is a side sectional view of a box body of the present invention; Figure 6is a schematic diagram of a state in which the second sliding sleeve and the first sliding sleeve of the present invention are close to each other; Figure 7 is a structural diagram of the connection between the first sliding sleeve and the first arc-shaped rod of the present invention; Figure 8 It is a connection structure diagram of the second sliding sleeve and the second arc rod of the present invention. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with 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 intended to limit the present invention.

[0015] like Figures 1 to 8 As shown, the present embodiment provides a pile cutting cutter disc of a water jet shield machine in a gravel stratum, comprising a cutter disc 1, one end of which is fixedly connected to a box body 2, a transverse slide groove 21 is arranged at the bottom of the box body 2, a transverse slider 22 is slidably connected in the transverse slide groove 21, an inner end of the transverse slide groove 21 is fixedly connected to a transverse oil cylinder 23, an upper side of the transverse slider 22 is fixedly connected to a vertical rod 24, a first sliding sleeve 26 is slidably connected on the vertical rod 24, the first sliding sleeve 26 is fixedly connected to a first arc plate 28 through a first support rod 261, a water cutting nozzle 27 is mounted on the first arc plate 28, a plurality of first cross bars 29 are arranged on the first arc plate 28, the first sliding sleeve 26 reciprocates along the vertical rod 24 through a driving device, a notch 5 is arranged on the outer circumferential surface of the cutter disc 1, an inclined surface 51 is arranged on one side of the notch 5, a guide groove is arranged on the other side of the notch 5, an arc baffle 52 is slidably connected in the guide groove, and the arc baffle 52 is arranged corresponding to the inclined surface 51. When this embodiment is in use, while the cutter disc 1 rotates, the driving device drives the first sleeve 26 to slide back and forth along the vertical rod 24, and the water cutting nozzle 27 follows the first sleeve 26 to slide back and forth, so that the spray range of the water cutting nozzle 27 can be increased, thereby cutting the residual piles and waste piles in the gravel formation, so that the piles are cut and broken.

[0016] When the first sliding sleeve 26 slides along the vertical rod 24, the first arc plate 28 and the first cross bar 29 also move accordingly. The first cross bar 29 can pick up the large boulders, hard stones, and large pile column cut pieces in the box body 2 and push them out from the notch 5. As the cutterhead continues to rotate, the boulders and hard stones are squeezed to the periphery of the tunnel under the action of the inclined surface 51. This can prevent too many boulders, hard stones, and large pile column cut pieces from gathering in front of the cutterhead 1 and affecting the normal operation of the cutterhead 1. On the other hand, the boulders, hard stones, and large pile column cut pieces are pushed into the tunnel wall outside the shield tunnel face. The boulders, hard stones, and large pile column cut pieces can act as coarse aggregates. During the later grouting, the boulders, hard stones, and large pile column cut pieces can play a role in reinforcing the soft gravel strata.

[0017] The arc baffle 52 acts as an electric door, that is, the arc baffle 52 can seal or open the slot 5. The arc baffle 52 is driven by conventional power. When the first arc plate 28 and the first cross bar 29 approach the slot 5, the arc baffle 52 is retracted into the guide groove. When the first arc plate 28 and the first cross bar 29 leave the slot 5, the arc baffle 52 extends out to block the slot 5.

[0018] As an embodiment of the present invention, both ends of the first curved plate 28 are rotatably connected to the rotating rod 20 through spring hinges. The spring hinges belong 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 curved plate 28. The first cross bar 29 is fixed on one side of the two rotating rods 20. The vertical rod 24 is also slidably connected to the second sliding sleeve 25. The second sliding sleeve 25 is fixedly connected to the second curved plate 281 through the second support rod 251. The second support rod 251 is staggered with the first support rod 261. The second curved plate 281 is also equipped with a water jet nozzle 27. The second curved plate 281 is equipped with a second cross bar 291. 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 toward or away from each other along the vertical rod 24.

[0019] like Figure 5 and Figure 6 As shown, when the second sleeve 25 and the first sleeve 26 move in opposite directions on the vertical rod 24, the water jet cuts the piles and boulders to form gravels of different sizes, and the first cross bar 29 pushes the gravels from the notch to the outside. When the second sleeve 25 and the first sleeve 26 move in opposite directions, the large gravels on the upper side of the second cross bar 291 are pressed toward the first cross bar 29 (the upper side here is the outer direction of the tunnel), so that the two rotating rods 20 rotate and a channel is formed in the middle (the cutting face is full of mud balance or slag, and the box 2 is at twelve o'clock on the cutter head 1 The second sliding sleeve 25 and the first sliding sleeve 26 move opposite to each other again on the vertical rod 24 (the second sliding sleeve 25 moves downward, and the first sliding sleeve 26 slides upward), and some of the gravels that are not fully chopped are squeezed into the periphery of the tunnel, which plays a role in reinforcing the stratum and improving the efficiency of pile cutting.

[0020] As an embodiment of the present invention, Figures 1 to 6 As shown, the driving device includes an axial cylinder 3, the inner wall of the box body 2 is fixedly connected to the axial cylinder 3, the telescopic end of the axial cylinder 3 is fixedly connected to the axial slider 31, the axial slider 31 is hingedly connected to the first connecting rod 32 and the second connecting rod 33, the first connecting rod 32 is hingedly connected to the second sliding sleeve 25, and the second connecting rod 33 is hingedly connected to the first sliding sleeve 26.

[0021] The axial cylinder 3 pushes the axial slider 31 to move, so that the second sleeve 25 and the first sleeve 26 slide as a whole. Through the reciprocating push of the transverse cylinder 23, due to the limitation of the axial slider 31, the second sleeve 25 and the first sleeve 26 are close to or away from each other. On the one hand, the second sleeve 25 and the first sleeve 26 move as a whole or separately, and cooperate with the rotation of the cutter head 1, the cutting line of the water jet cutting is more refined, making the pile column cutting more fragmented and easy to discharge slag. On the other hand, the relative movement of the second sleeve 25 and the first sleeve 26 facilitates the extrusion of large pieces of gravel to the periphery of the tunnel.

[0022] As an embodiment of the present invention, Figures 3 to 6 As shown, a partition 4 is disposed in the middle of the box body 2, and a through slot 41 is disposed on the partition 4. The first connecting rod 32 and the second connecting rod 33 pass through the through slot 41 to prevent the crushed stones from approaching the oil cylinder system at the rear side.

[0023] As an embodiment of the present invention, Figure 1 to Figure 2 As shown, a side slide groove 6 is provided at the upper end of the side wall of the box body 2, and a side slider 61 is slidably connected in the side slide groove 6. Support rods 62 are fixedly connected to both sides of the upper end of the vertical rod 24 respectively. The support rods 62 are fixedly connected to the side slider 61 to form a support guide for the upper end of the vertical rod 24.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pile cutting cutterhead of a water jet shield machine for gravel formations, comprising a cutterhead (1), one end of the cutterhead (1) being fixedly connected to a box (2), a vertical rod (24) being provided in the box (2), and the vertical rod (24) being capable of reciprocatingly sliding along the axial direction of the cutterhead (1), characterized in that: The vertical rod (24) is slidably connected to a first sliding sleeve (26), the first sliding sleeve (26) is fixedly connected to a first arc plate (28) via a first support rod (261), a water jet nozzle (27) is mounted on the first arc plate (28), a plurality of first cross bars (29) are arranged on the first arc plate (28), the first sliding sleeve (26) reciprocates and slides along the vertical rod (24) via a driving device, a notch (5) is arranged on the outer circumferential surface of the cutter disc (1), a slope (51) is arranged on one side of the notch (5), a guide groove is arranged on the other side of the notch (5), an arc baffle (52) is slidably connected in the guide groove, and the arc baffle (52) is arranged corresponding to the slope (51).

2. The pile cutting cutter disc of a water jet shield machine in gravel strata according to claim 1, characterized in that: The vertical rod (24) is also slidably connected to a second sliding sleeve (25), and the second sliding sleeve (25) is fixedly connected to a second arc-shaped plate (281) via a second supporting rod (251). A water jet nozzle (27) is also mounted on the second arc-shaped plate (281), and a second cross bar (291) is mounted on the second arc-shaped plate (281).

3. The pile cutting cutter disc of a water jet shield machine in gravel strata according to claim 2 is characterized by: Both ends of the first arc-shaped plate (28) are rotatably connected to the rotating rod (20) via spring hinges. 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 to one side of the two rotating rods (20).

4. The pile cutting cutter disc of a water jet shield machine in gravel strata according to claim 3 is characterized by: The first sliding sleeve (26) and the second sliding sleeve (25) are driven by a driving device, and the driving device can enable the first sliding sleeve (26) and the second sliding sleeve (25) to move towards or away from each other along the vertical rod (24).

5. The pile cutting cutter disc of a water jet shield machine in gravel strata according to claim 4, characterized in that: The driving device comprises 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 slider (31), the axial slider (31) is hingedly connected to a first connecting rod (32) and a second connecting rod (33), the first connecting rod (32) is hingedly connected to a first sliding sleeve (26), and the second connecting rod (33) is hingedly connected to a second sliding sleeve (25).

6. The pile cutting cutter disc of a water jet shield machine in gravel strata according to claim 5, characterized in that: A partition plate (4) is provided in the middle of the box body (2), and a through slot (41) is provided on the partition plate (4), and the first connecting rod (32) and the second connecting rod (33) pass through the through slot (41).

7. The pile cutting cutter head of a water jet shield machine in gravel strata according to claim 6, characterized in that: A side slide groove (6) is provided at the upper end of the side wall of the box body (2), and a side slider (61) is slidably connected in the side slide groove (6). Support rods (62) are fixedly connected to both sides of the upper end of the vertical rod (24), and the support rods (62) are fixedly connected to the side slider (61).

8. The pile cutting cutter head of a water jet shield machine in gravel strata according to claim 1, characterized in that: A transverse slide groove (21) is provided at the bottom of the box body (2), a transverse slider (22) is slidably connected inside the transverse slide groove (21), an inner end of the transverse slide groove (21) is fixedly connected to a transverse oil cylinder (23), and an upper side of the transverse slider (22) is fixedly connected to a vertical rod (24).

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