CN113446017B - Piston mechanism and spherical tooth hobbing cutter with water jet assisted rock breaking function - Google Patents
Piston mechanism and spherical tooth hobbing cutter with water jet assisted rock breaking function Download PDFInfo
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- CN113446017B CN113446017B CN202110864364.4A CN202110864364A CN113446017B CN 113446017 B CN113446017 B CN 113446017B CN 202110864364 A CN202110864364 A CN 202110864364A CN 113446017 B CN113446017 B CN 113446017B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 130
- 239000011435 rock Substances 0.000 title claims abstract description 52
- 230000007246 mechanism Effects 0.000 title claims abstract description 27
- 239000000523 sample Substances 0.000 claims abstract description 36
- 238000005192 partition Methods 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 230000009471 action Effects 0.000 claims abstract description 6
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 abstract description 6
- 230000002035 prolonged effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000003116 impacting effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 230000005641 tunneling Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
- E21D9/087—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
- E21D9/1066—Making by using boring or cutting machines with fluid jets
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The invention discloses a piston mechanism and a spherical tooth hob with a water jet assisted rock breaking function, which comprise a piston cylinder, a piston and an elastic part, wherein the piston cylinder is of a hollow tubular structure, a sealing partition plate is arranged in the piston cylinder, and the interior of the piston cylinder is divided into an upper movable cavity and a lower pressure cavity by the sealing partition plate; the piston penetrates through the sealing partition plate and is movably arranged in the piston cylinder, a limiting block is arranged at the end part of the piston, protruding out of the pressure cavity, the limiting block seals an opening of the pressure cavity in a natural state, and a piston probe is arranged at the position, located in the movable cavity, of the piston; the elastic piece is arranged below the piston and is abutted against the limiting block, and the piston probe always protrudes out of the opening of the movable cavity under the natural state through the action of the elastic piece. The invention can make the water jet shoot from the periphery of the arranged spherical teeth, and control the on-off of the water jet through a pure mechanical structure, has high reliability, can reduce the abrasion of the spherical tooth hob and improve the rock breaking efficiency.
Description
Technical Field
The invention relates to the technical field of rock breaking by a spherical tooth hob, in particular to a piston mechanism and a spherical tooth hob with a water jet assisted rock breaking function.
Background
A hard rock Tunnel Boring Machine (TBM) is main equipment for tunneling rock strata, and is mainly used for crushing rocks by utilizing the extrusion shearing of a hob on a rotary cutter head. The spherical tooth hob is a common cutter on a TBM cutter disc, a circle of spherical teeth are arranged on the surface of a cutting edge on the basis of a constant-section hob, rock soil is firstly extruded by the spherical teeth to perform pre-cutting in the tunneling process, and then rocks are cut by a follow-up cutting edge.
With the increasing use requirements of the TBM in the engineering construction fields of hydraulic engineering, subway engineering, traffic engineering and the like, higher requirements are also put forward on the performance of the TBM. When current TBM comes the cutting to break the rock through using the ball tooth hobbing cutter, because the ball tooth easily receives the impact, produce ball tooth wearing and tearing even ball tooth and collapse scheduling problem easily, reduce its broken rock life-span, and then increase tool changing frequency and down time, prolonged construction cycle and aggravated construction cost. The reason is that the load of the cutting rock breaking of the spherical tooth hob is overlarge, so that the rock breaking load of the spherical tooth hob is reduced by adopting an effective means, the rock breaking efficiency of the spherical tooth hob can be improved, and the rock breaking service life of the spherical tooth hob is prolonged. The existing TBM cutter head is designed to improve the rock breaking efficiency of a hob, the traditional cutter head is improved, and an auxiliary rock breaking device such as a water jet auxiliary device is added on the cutter head. The water jet rock breaking has the characteristics of cleanness, environmental protection, low energy, high efficiency, easy realization and the like, and is mostly seen in the existing TBM improvement design. However, as the water jet auxiliary rock breaking device is arranged on the cutter head, the distance between the impact point of the water jet and the hob is too large, the combined rock breaking effect is not ideal, the opening and closing of the water jet are controlled by an external circuit through a valve, the working environment of the cutter head is very severe, the requirement on the reliability of the valve is very high, and the factors constrain the ability of the water jet to improve the rock breaking performance of the hob.
Disclosure of Invention
The invention aims to solve the technical problems to a certain extent, and provides a piston mechanism and a spherical tooth hob with a water jet assisted rock breaking function, wherein the water jet can be ejected from the periphery of the arranged spherical tooth, the opening and closing of the water jet is controlled through a pure mechanical structure, the reliability is high, the abrasion of the spherical tooth hob can be reduced, and the rock breaking efficiency is improved.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the piston cylinder is of a hollow tubular structure, a sealing partition plate is arranged in the piston cylinder, and the interior of the piston cylinder is divided into a movable cavity and a pressure cavity by the sealing partition plate; the piston penetrates through the sealing partition plate and is movably arranged in the piston cylinder, a limiting block is arranged at the end part of the piston, protruding out of the pressure cavity, the limiting block seals an opening of the pressure cavity in a natural state, and a piston probe is arranged at the position, located in the movable cavity, of the piston; the elastic piece is arranged below the piston and is abutted against the limiting block, and the piston probe always protrudes out of the opening of the movable cavity under the natural state through the action of the elastic piece.
Preferably, the part of the piston probe protruding out of the movable cavity is hemispherical, and the part of the piston probe arranged in the movable cavity is in clearance fit with the movable cavity.
Preferably, an upper tray used for fixing the position of the elastic piece is arranged below the limiting block.
Preferably, the diameter of the limiting block is larger than that of the opening of the pressure cavity.
Preferably, the piston probe and the limiting block are integrally formed.
The spherical tooth hob with the water jet assisted rock breaking function comprises a cutter ring, a cutter shaft, spherical teeth and the piston mechanism, wherein the cutter shaft is assembled inside the cutter ring, and a lower water storage cavity is arranged at the joint of the cutter shaft and the cutter ring; the high-pressure water injection hole is arranged in the cutter shaft and is communicated with a cutter shaft water jet channel arranged on the cutter shaft, and water filled in the high-pressure water injection hole is injected into the lower water storage cavity through the cutter shaft water jet channel; the ball teeth are uniformly distributed on the cutting edges arranged on the periphery of the cutter ring, the ball teeth are communicated with the lower water storage cavity through a water jet input channel arranged in the cutter ring, the piston mechanism is arranged in the ball teeth, a piston connecting channel communicated with the water jet input channel is arranged on the piston mechanism, and a device hole and a water jet output channel outlet are formed in the outer surface of the ball teeth.
Preferably, the number of the outlets of the water jet output channel is at least four, and the outlets are circumferentially distributed by taking the device hole as an axis.
Preferably, a water jet output channel is formed between the outer side of the piston mechanism and the spherical teeth as well as the cutter ring, an upper water storage cavity is arranged in the cutter ring and below the water jet output channel, and the upper water storage cavity is communicated with the water jet input channel through a communication cavity arranged in the cutter ring.
Preferably, a lower tray is arranged in the upper water storage cavity at a position right facing the lower part of the piston mechanism.
Preferably, the diameter of the upper water storage cavity is larger than that of the water jet input channel.
Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:
(1) the rock is pre-damaged through high-pressure water jet, and because the water jet nozzle is installed on the cutter ring, the formed holes are effectively superposed with the track of the hob, so that the penetration speed of the hob can be increased, and compared with the traditional hob for rock breaking, the vertical force borne by the hob is reduced by 30%.
(2) The high-pressure water jet has the effects of impact splitting and sputtering, and can form micro cracks on the rock surface when impacting the rock surface, change the internal physical structure of the rock body, improve the rock breaking efficiency of the hob along the radial direction, reduce the abrasion of the cutter, and prolong the cutter changing period and the service life of the cutter.
(3) The abrasion of the hob is reduced, the hob changing period of the hob is prolonged, and the operation maintenance cost and the engineering investment of the TBM are saved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
In the drawings:
FIG. 1 is a schematic view of the piston mechanism of the present invention;
FIG. 2 is a schematic side sectional view of the spherical gear hob with the water jet assisted rock breaking function according to the present invention;
FIG. 3 is a schematic structural diagram of a partial sectional view of the front side of the ball-tooth hob with the water jet assisted rock breaking function according to the invention; (ii) a
FIG. 4 is a partially enlarged view of the portion A in FIG. 3 in a natural state of the ball-tooth hob;
FIG. 5 is a partially enlarged view of the portion A in FIG. 3 when the ball-tooth hob is in a working state; (ii) a
Fig. 6 is a top view of the button of the present invention.
Reference numerals: 1-a piston cylinder; 2-a piston; 3-an elastic member; 4-sealing the partition plate; 5-a movable cavity; 6-pressure cavity; 7-a limiting block; 8-piston probe; 9-upper tray; 10-cutter ring; 11-a cutter shaft; 12-spherical teeth; 13-lower water storage cavity; 14-high pressure water injection hole; 15-a cutter shaft water jet channel; 16-water jet input channel; 17-water jet output channel; 18-an upper water storage cavity; 19-a communicating chamber; 20-lower tray; 21-a piston connecting channel; 22-device hole; 23-water jet output channel outlet.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In the following description, it is to be understood that the orientations and positional relationships indicated by "front", "rear", "upper", "lower", "left", "right", "longitudinal", "lateral", "vertical", "horizontal", "top", "bottom", "inner", "outer", "leading", "trailing", and the like are configured and operated in specific orientations based on the orientations and positional relationships shown in the drawings, and are only for convenience of describing the present invention, and do not indicate that the device or element referred to must have a specific orientation, and thus, are not to be construed as limiting the present invention.
It is also noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or intervening elements may also be present. The terms "first", "second", "third", etc. are only for convenience in describing the present technical solution, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
As shown in fig. 1, the present invention provides a piston mechanism, which comprises a piston cylinder 1, a piston 2, and an elastic member 3, wherein the piston cylinder 1 is a hollow tubular structure, a sealing partition plate 4 is arranged in the piston cylinder 1, and the interior of the piston cylinder 1 is divided into an upper movable cavity 5 and a lower pressure cavity 6 by the sealing partition plate 4; the piston 2 penetrates through the sealing partition plate 4 and is movably arranged in the piston cylinder 1, the end part of the piston 2, protruding out of the pressure cavity 6, is provided with a limiting block 7, the limiting block 7 seals a water jet output channel 17 arranged below the pressure cavity 6 in a natural state, a piston probe 8 is arranged at the position, located in the movable cavity 5, of the piston 2, and specifically, the piston 2, the piston probe 8 and the limiting block 7 are integrally formed; the elastic part 3 is arranged below the piston 2 and is abutted against the limiting block 7, the stiffness coefficient of the elastic part 3 is 100N/mm, and the piston probe 8 can be pushed out of the movable cavity 5 even if the water flow is insufficient; the piston probe 8 always protrudes out of the opening of the movable cavity 5 under the natural state through the action of the elastic part 3, and the elastic part 3 adopts a return spring;
referring to fig. 1, the part of the piston probe 8 protruding out of the movable cavity 5 is hemispherical, the part of the piston probe arranged inside the movable cavity 5 is in clearance fit with the movable cavity 5, and specifically, the piston 2, the pressure cavity 6 and the movable cavity 5 are in clearance fit and are sealed by the sealing partition plate 4; the depth of the movable cavity 5 is 15mm, the length of the piston probe 8 is 8mm, and the movable cavity 5 can completely accommodate the piston probe 8 during compression;
wherein, referring to fig. 1, an upper tray 9 for fixing the position of the elastic element 3 is arranged below the limiting block 7, so that the acting force of the limiting block 7 can be ensured to be uniformly acted on the elastic element 3 when the piston probe 8 is pressed down, thereby improving the stretching stability of the elastic element 3,
referring to fig. 1, the diameter of the limiting block 7 is larger than that of the opening of the pressure cavity 6, so that the piston probe 8 is prevented from excessively extending out of the movable cavity 5, the extending part of the piston probe 8 is ensured to be just a hemisphere, and the limiting block 7 just blocks the water jet output channel 17 when the piston probe 8 is not pressed down.
As shown in fig. 2-6, the invention provides a spherical gear hob with a water jet assisted rock breaking function, which comprises a cutter ring 10, a cutter shaft 11, spherical teeth 12 and a piston mechanism, wherein the cutter shaft 11 is assembled inside the cutter ring 10, and a lower water storage cavity 13 is arranged at the joint of the cutter shaft 11 and the cutter ring 10; a high-pressure water injection hole 14 is formed in the cutter shaft 11, the high-pressure water injection hole 14 is communicated with a cutter shaft water jet channel 15 arranged on the cutter shaft 11, and water injected from the high-pressure water injection hole 14 is injected into the lower water storage cavity 13 through the cutter shaft water jet channel 15; the spherical teeth 12 are uniformly distributed on the cutting edges arranged on the periphery of the cutter ring 10, the spherical teeth 12 are communicated with the lower water storage cavity 13 through a water jet input channel 16 arranged inside the cutter ring 10, wherein the diameter of a high-pressure water injection hole 14 is 1.5 times of the diameter of the water jet input channel 16, so that sufficient water flow supply is ensured, and meanwhile, the diameter of a cutter shaft water jet channel 15 is 1/3 times of the diameter of the water jet input channel 16, so that the strength of the cutter shaft 11 is ensured;
further, as shown in fig. 4, a water jet output channel 17 is formed between the outer side of the piston mechanism and the spherical teeth 12 and between the piston mechanism and the cutter ring 10, an upper water storage cavity 18 is formed in the position, below the water jet output channel 17, of the cutter ring 10, the upper water storage cavity 18 is communicated with the water jet input channel 16 through a communication cavity 19 formed in the cutter ring 10, the diameter of the upper water storage cavity 18 is larger than that of the water jet input channel 16, a lower tray 20 is formed in the position, below the piston mechanism, of the upper water storage cavity 18, and the lower tray 20 is matched with the upper tray 9 formed below the limiting block 7 to fix the assembly position of the elastic part 3.
In this embodiment, referring to fig. 4 to 5, the piston mechanism is disposed inside the spherical teeth 12, the stopper 7 is provided with a piston connecting channel 21 communicated with the water jet input channel 16, the outer surface of the spherical teeth 12 is provided with a device hole 22 and a water jet output channel outlet 23, a piston probe 8 in the piston mechanism protrudes from the device hole 22 to the outside, when the piston probe 8 is not pressed down, the stopper 7 just blocks the water jet output channel 17, after the piston probe 8 is pressed down, the upper water storage cavity 18 is communicated with the water jet output channel 17, high-pressure water flow enters the pressure cavity 6 from the upper water storage cavity 18 and then is ejected from the water jet output channel outlet 23 to break rock, it should be noted that the spherical teeth 12 are hemispherical, and compared with other hob-inlaid teeth, the spherical inlaid teeth are more uniformly stressed and relatively less worn during rock breaking;
further, as shown in fig. 6, at least four water jet output channel outlets 23 are arranged and circumferentially distributed by taking the device hole 22 as an axis, it should be noted that in order to ensure the structural strength of the hob, the number of the water jet output channels 17 cannot be infinitely increased, and the number of the water jet output channels 17 is required to be not more than 18 for a 17-inch hob;
the working principle is as follows: when the hob works, water is injected into the hob through the high-pressure water injection holes 14, so that each cavity in the hob is filled with water, spherical teeth 12 are distributed on the edge face of the hob arranged on the periphery of the hob ring 10, a piston mechanism is assembled in the spherical teeth 12, high-pressure water jet is formed outside the spherical teeth 12 through the piston mechanism, rocks are pre-damaged through the high-pressure water jet, and meanwhile, as water jet nozzles are arranged on the hob ring 10, formed holes are effectively overlapped with the track of the hob, the penetration speed of the hob can be improved, and compared with the traditional hob for rock breaking, the vertical force borne by the hob is reduced by 30%;
furthermore, the piston probe 8 is extended from the probe movable cavity 5 under the action of the elastic element 3 and high-pressure water flow in a natural state, when the hob cuts rock, the piston probe 8 on a certain spherical tooth 12 is driven to move downwards due to the pressure of the rock, so that the water jet output channel 17 is communicated with the upper water storage cavity 18 through the pressure cavity 6, high-pressure water jet enters the pressure cavity 6 from the upper water storage cavity 18 through the piston connecting channel 21, then enters the water jet output channel 17 from the pressure cavity 6, and is ejected outwards from the water jet output channel outlet 23 to impact and cut the rock at the contact part of the spherical tooth 12, the high-pressure water jet has impact and sputtering effects, when impacting the rock surface, the rock surface can form micro cracks, the internal physical structure of the rock body can be changed, the rock breaking efficiency of the hob along the radial direction can be improved, meanwhile, the abrasion of the cutter can be reduced, the cutter splitting period can be prolonged, and the service life of the cutter can be prolonged, the abrasion of the hob is reduced, the hob changing period is prolonged, and the operation maintenance cost and the engineering investment of the TBM are saved;
further, along with the rotation of the hob, the pressure of the rock on the piston probe 8 is gradually reduced, the piston 2 is driven by the action force of the spring and the high-pressure water flow to move the piston probe 8 upwards, so that the piston probe 8 extends out again, the limiting block 7 blocks the water jet output channel 17, and the water jet output channel 17 stops jetting water jet; it should be noted that when the active piston probe 8 is just extended again, at least one other piston probe 8 is pressed in the forward direction, and the jet of water starts to be ejected outwards.
It is to be understood that the foregoing examples, while indicating the preferred embodiments of the invention, are given by way of illustration and description, and are not to be construed as limiting the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several changes and modifications can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the claims of the present invention.
Claims (5)
1. The utility model provides a ball tooth hobbing cutter with supplementary broken rock function of water jet which characterized in that: the cutter comprises a cutter ring, a cutter shaft, spherical teeth and a piston mechanism, wherein the cutter shaft is assembled in the cutter ring, and a lower water storage cavity is arranged at the joint of the cutter shaft and the cutter ring; the high-pressure water injection hole is arranged in the cutter shaft and is communicated with a cutter shaft water jet channel arranged on the cutter shaft, and water filled in the high-pressure water injection hole is injected into the lower water storage cavity through the cutter shaft water jet channel; the spherical teeth are uniformly distributed on the cutting edges arranged on the periphery of the cutter ring, the spherical teeth are communicated with the lower water storage cavity through a water jet input channel arranged in the cutter ring, the piston mechanism is arranged in the spherical teeth, a piston connecting channel communicated with the water jet input channel is arranged on the piston mechanism, and the outer surface of the spherical teeth is provided with a device hole and a water jet output channel outlet;
the piston mechanism comprises a piston cylinder, the piston cylinder is of a hollow tubular structure, a sealing partition plate is arranged in the piston cylinder, and the interior of the piston cylinder is divided into a movable cavity and a pressure cavity by the sealing partition plate;
the piston penetrates through the sealing partition plate and is movably arranged in the piston cylinder, a limiting block is arranged at the end part of the piston, protruding out of the pressure cavity, the limiting block seals an opening of the pressure cavity in a natural state, and a piston probe is arranged at the position of the piston, located in the movable cavity;
the elastic piece is arranged below the piston and is abutted against the limiting block, and the piston probe always protrudes out of the opening of the movable cavity under the natural state through the action of the elastic piece;
the part of the piston probe protruding out of the movable cavity is hemispherical, and the part of the piston probe arranged in the movable cavity is in clearance fit with the movable cavity;
an upper tray used for fixing the position of the elastic piece is arranged below the limiting block;
the diameter of the limiting block is larger than that of the opening of the pressure cavity;
the piston, the piston probe and the limiting block are integrally formed.
2. The ball-tooth hob with the function of water jet assisted rock breaking according to claim 1, characterized in that: at least four water jet output channel outlets are arranged and are circumferentially distributed by taking the device hole as an axis.
3. The ball-tooth hob with the function of water jet assisted rock breaking according to claim 1, characterized in that: a water jet output channel is formed between the outer side of the piston mechanism and the spherical teeth and between the outer side of the piston mechanism and the cutter ring, an upper water storage cavity is arranged in the cutter ring and below the water jet output channel, and the upper water storage cavity is communicated with the water jet input channel through a communication cavity formed in the cutter ring.
4. The ball-tooth hob with the water jet assisted rock breaking function according to claim 3, characterized in that: and a lower tray is arranged in the upper water storage cavity at a position right facing the lower part of the piston mechanism.
5. The ball-tooth hob with the water jet assisted rock breaking function according to claim 3, characterized in that: the diameter of the upper water storage cavity is larger than that of the water jet input channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110864364.4A CN113446017B (en) | 2021-07-29 | 2021-07-29 | Piston mechanism and spherical tooth hobbing cutter with water jet assisted rock breaking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110864364.4A CN113446017B (en) | 2021-07-29 | 2021-07-29 | Piston mechanism and spherical tooth hobbing cutter with water jet assisted rock breaking function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113446017A CN113446017A (en) | 2021-09-28 |
| CN113446017B true CN113446017B (en) | 2022-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110864364.4A Active CN113446017B (en) | 2021-07-29 | 2021-07-29 | Piston mechanism and spherical tooth hobbing cutter with water jet assisted rock breaking function |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AUPN703195A0 (en) * | 1995-12-08 | 1996-01-04 | Bhp Australia Coal Pty Ltd | Fluid drilling system |
| CN100562645C (en) * | 2006-01-13 | 2009-11-25 | 中国石油大学(北京) | High pressure water jet-flow deep penetrating perforating and auxiliary crushing method and device thereof |
| CA2939576A1 (en) * | 2015-08-31 | 2017-02-28 | Geodynamics, Inc. | Hydraulic delay toe valve system and method |
| CN107083922B (en) * | 2017-06-09 | 2019-01-11 | 中国矿业大学 | A kind of pneumatic self-advancing type super-high pressure pulse jet stream auxiliary impact broken rock equipment |
| CN108979539B (en) * | 2018-06-12 | 2019-11-08 | 中国矿业大学 | A kind of mechanical rock fracture in dynamic indentation equipment of motor driven super-high pressure pulse jet stream auxiliary |
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