CN113586071A - Fast-assembling shield cutter head and cutter changing method of shield machine cutter head - Google Patents
Fast-assembling shield cutter head and cutter changing method of shield machine cutter head Download PDFInfo
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- CN113586071A CN113586071A CN202110931287.XA CN202110931287A CN113586071A CN 113586071 A CN113586071 A CN 113586071A CN 202110931287 A CN202110931287 A CN 202110931287A CN 113586071 A CN113586071 A CN 113586071A
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- cutter
- rotating body
- clamping arm
- opening
- cutter head
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000005641 tunneling Effects 0.000 claims description 14
- 238000009434 installation Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 239000002689 soil Substances 0.000 description 5
- 239000011435 rock Substances 0.000 description 4
- 239000004575 stone Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
Abstract
The invention discloses a fast-assembling shield cutter head, a cutter and a cutter changing method of the shield cutter head, wherein the fast-assembling shield cutter head comprises a cutter head body and a cutter; the cutter head body is provided with a cutter seat groove matched with a cutter handle of the cutter; a positioning rod, a first clamping arm and a second clamping arm for clamping the tool shank are arranged in the tool holder groove; the first clamping arm and the second clamping arm are respectively positioned at two opposite sides of the tool holder groove, the first clamping arm is fixedly connected with one group of telescopic rods in the tool holder groove, and the second clamping arm is fixedly connected with the other group of telescopic rods in the tool holder groove; the two positioning rods are respectively connected to the other two sides of the cutter seat groove in a telescopic manner; two opposite side surfaces of the cutter handle are respectively provided with positioning holes corresponding to the two positioning rods one to one, the first clamping arm and the second clamping arm are pushed to be close together through the two groups of telescopic rods, and then the cutter handle is clamped in the cutter seat groove. The invention saves the operation of screwing the bolt, greatly shortens the time of replacing the cutter and shortens the downtime.
Description
Technical Field
The invention relates to the technical field of shield tunneling machines, in particular to a fast-assembling shield tunneling machine cutter head, a cutter and a cutter changing method of the shield tunneling machine cutter head.
Background
A shield machine is a tunnel boring machine using a shield method. The cutter head of the shield machine is a cutting disk body with a plurality of feeding grooves, is positioned at the forefront part of the shield machine and is used for cutting soil bodies. The cutter head is provided with a plurality of cutters, including a center cutter, a hob, a scraper, a super digging cutter and the like. All types of cutters are detachably connected with the cutter head because the cutters are worn and need to be replaced according to the wear.
The tool apron of most tools is detachably connected with the tool pan through bolts, such as a scraper, a super-digger and the like which do not rotate per se. The specific replacement steps mainly comprise the following steps: and S1, removing cement, residual soil and the like in the pressure bin, and removing silt adhered to the pressure bin. And S2, carrying in tools, installing scaffolds, tool hoisting and positioning tools and the like, and preparing for replacement. S3, using the grasping forceps and the tool hoisting and positioning tool to disassemble the old tool and replace the old tool with a new tool, and fastening the bolt for fixing the tool shaft to the specified torque. And S4, after a ring is tunneled, opening the cabin and tightening the cutter bolt again to finish the replacement of the cutter.
According to the replacing steps of the cutters, bolts for fixing the props need to be fastened twice, the size of each cutter is large, the number of the bolts is large, the bolts are not screwed up or unscrewed, the consumed time is long, the operation difficulty is high, and the cutter replacing steps are the step which occupies the most time in the replacing operation. The whole sedimentation of the shield machine is easily caused by long replacement operation time and long downtime, which causes the sedimentation of stratum and earth surface and is not beneficial to smooth construction.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a fast-assembling shield cutter head, which comprises a cutter head body and a cutter; the cutter head body is provided with a cutter seat groove matched with a cutter handle of the cutter; a positioning rod, a first clamping arm and a second clamping arm for clamping the tool shank are arranged in the tool holder groove;
the first clamping arm and the second clamping arm are respectively positioned at two opposite sides of the tool holder groove, the first clamping arm is fixedly connected with one group of telescopic rods in the tool holder groove, and the second clamping arm is fixedly connected with the other group of telescopic rods in the tool holder groove; the two positioning rods are respectively connected to the other two sides of the cutter seat groove in a telescopic manner;
two opposite side surfaces of the cutter handle of the cutter are respectively provided with positioning holes corresponding to the two positioning rods one to one, and the first clamping arm and the second clamping arm are simultaneously pushed to be close by the two groups of telescopic rods so as to clamp the cutter handle in the cutter seat groove;
the first clamping arm and the second clamping arm have the same structure and respectively comprise a base, a primary rotating body, a secondary rotating body and a tertiary rotating body; the shapes of the first-stage rotating body, the second-stage rotating body and the third-stage rotating body are semi-cylinders;
the same side surface of the base is provided with a plurality of openings, and each opening of the base is respectively and rotatably connected with one primary rotating body; the axial tangent plane of each primary rotating body is provided with a plurality of openings, and each opening of the primary rotating body is respectively and rotatably connected with one secondary rotating body; the axial tangent plane of each secondary rotating body is provided with a plurality of openings, and each opening of the secondary rotating body is respectively and rotatably connected with one tertiary rotating body;
the rotating directions of all the first-stage rotating bodies, the rotating directions of all the second-stage rotating bodies and the rotating directions of all the third-stage rotating bodies are all vertical to the telescopic direction of the telescopic rod, and the axial tangent planes of all the first-stage rotating bodies, the axial tangent planes of all the second-stage rotating bodies and the axial tangent planes of all the third-stage rotating bodies are all located on the same plane;
the axial tangent plane of all tertiary rotors of first arm lock all is equipped with the pad body towards the second arm lock, the axial tangent plane of all tertiary rotors of second arm lock all is equipped with the other pad body towards first arm lock, presss from both sides tight handle of a knife through first arm lock and second arm lock, and then makes some pad bodies or all pad bodies paste the different positions of tight handle of a knife.
The invention has the beneficial effects that:
1. the mode that first arm lock and second arm lock press from both sides tightly has replaced current thread tightening mode. The principle of clamping is as follows: the handle of a knife is put in the blade holder groove, first arm lock and second arm lock take the promotion of telescopic link down slowly to be close to the handle of a knife, because the handle of a knife is not the cuboid, but trapezoidal or irregular trapezoid, part pad body earlier with the handle of a knife contact, along with continuing to press from both sides tightly, one-level rotor, second grade rotor and tertiary rotor receive the moment that the pad body transmitted and take place correspondingly to deflect, make more pad bodies and handle of a knife contact, until one-level rotor, second grade rotor and tertiary rotor no longer swing, make the pad body with the handle of a knife contact firmly press from both sides tight handle of a knife. In short, the knife handles in different shapes are formed by swinging the first-stage rotating body, the second-stage rotating body and the third-stage rotating body to automatically change the included angle between the pad body and the knife handle, so that the pad body is fully contacted with the knife handles finally, and the clamping angle is self-adaptive. The operation of screwing bolts is omitted when the cutter is replaced, only the telescopic rod needs to be controlled to stretch, the time for replacing the cutter is greatly shortened, and the downtime is shortened, so that the risk of stratum and earth surface settlement caused by the integral settlement of the shield tunneling machine is reduced.
2. The positioning rod is transversely inserted into the positioning hole of the cutter handle, so that the cutter can be effectively prevented from falling off from the cutter holder groove. The pressure sensor can detect whether the cutter handle is in place or not in the installation process, and can also monitor the pressure condition borne by the cutter in real time in the tunneling process of the shield tunneling machine, so that online monitoring is realized, and the working condition of the cutter is mastered more accurately.
Preferably, two opposite sides of the tool holder groove are respectively provided with an electromagnetic valve, valve cores of the two electromagnetic valves are respectively and fixedly connected with the two positioning rods in a one-to-one correspondence manner, and the positioning rods are stretched by on-off of the electromagnetic valves; the two electromagnetic valves are distributed in a staggered mode, so that the positioning holes are distributed on the left side of the upper portion of the cutter handle and the right side of the upper portion of the cutter handle. Because the locating lever mainly plays transverse positioning's effect, through the solenoid valve with the locating lever insert the locating hole can, simple structure, stability is strong.
Preferably, a groove for installing an electromagnetic valve is formed in the side surface of the cutter seat groove, and the electromagnetic valve drives the corresponding positioning rod to retract into the groove. The knife handle is not influenced to be inserted into the knife seat groove after the positioning rod retracts.
Preferably, the width direction of the tool holder is perpendicular to the telescopic direction of the first clamping arm or the second clamping arm, and the width of the tool holder is the same as that of the tool holder groove; the bottom wall of the tool holder groove is provided with a pressure sensor opposite to the lower end face of the tool holder.
Preferably, the central shaft of each primary rotating body is rotatably connected in the opening of the base, the central shaft of each secondary rotating body is rotatably connected in the opening of the primary rotating body, and the central shaft of each tertiary rotating body is rotatably connected in the opening of the secondary rotating body; the central axes of all the first-stage rotating bodies and the central axes of all the second-stage rotating bodies are parallel to the central axes of all the third-stage rotating bodies.
Preferably, the opening of the base penetrates through one side surface of the base facing the front of the cutter head body; the first cover plate is arranged on the side surface through which the opening of the base penetrates, and the first cover plate is detachably connected with the corresponding side surface; the central shaft of the primary rotating body is rotatably connected between the first cover plate and one side wall of the opening of the base.
Preferably, the opening of the primary rotating body penetrates through one side surface of the primary rotating body opposite to the first cover plate; the second apron of the side that the one-level rotor opening runs through is located including the lid, and the center pin of second grade rotor rotates to be connected between second apron and one-level rotor open-ended lateral wall.
Preferably, the opening of the secondary rotating body penetrates through one side surface of the secondary rotating body opposite to the second cover plate; the third apron of the side that the second grade rotor opening runs through is located including the lid, and the center pin of tertiary rotor rotates to be connected between third apron and second grade rotor open-ended lateral wall.
First arm lock and second arm lock are all through first apron and pedestal connection back, compress tightly second apron and third apron in proper order, and the good of design is in can realizing fast split and installation like this. Because first arm lock and second arm lock are in exposing the state, can directly contact with the dregs, the inside of first arm lock and second arm lock can be got into to the soil stone in small, broken bits. Too much can influence the swing of one-level rotor, second grade rotor and tertiary rotor when the soil stone of accumulation, consequently need regularly clear up, if adopt the mode of water-washed also unable clearance, then need first arm lock of split and second arm lock. The first clamping arm and the second clamping arm are convenient to disassemble and assemble, the occupied time is short, and the construction efficiency is improved.
Preferably, the side of the first cover plate is provided with a step extending into the opening of the base, the second cover plate is provided with another step extending into the opening of the primary rotor, and the third cover plate is provided with another step extending into the opening of the secondary rotor. The first cover plate, the second cover plate and the third cover plate can quickly determine the installation position by adopting a step mode, the disassembly and assembly time is further shortened, the positioning is very convenient, and the reduction of the installation error is facilitated.
The invention also provides a tool changing method of the shield tunneling machine cutter head, which is applied to the fast-assembling shield tunneling machine cutter head, wherein the pressure sensor and the electromagnetic valve are respectively and electrically connected with an operation panel of the shield tunneling machine, and the method comprises the following steps:
s1: the operation panel retracts the telescopic rod group and the positioning rod of the cutter seat groove, and the original cutter is pulled out of the cutter seat groove;
s2: the tool shank of the new tool is inserted into the tool holder groove, and the lower end face of the tool shank abuts against the pressure sensor;
s3: when the pressure value detected by the pressure sensor is not less than the pressure value set by the operation panel, the operation panel enables the electromagnetic valve to drive the corresponding positioning rod to be inserted into the corresponding positioning hole;
s4: the operation panel enables the telescopic rod group of the cutter seat groove to extend out simultaneously, the first clamping arm and the second clamping arm move towards the direction of the cutter handle respectively until the pad body of the first clamping arm and the pad body of the second clamping arm abut against the corresponding side face of the cutter handle tightly, so that the cutter handle is clamped, and the cutter is replaced.
The method has the beneficial effects that: compared with the existing tool changing method, the basic operations of moving, taking and placing the tool are the same, and the difference lies in that the mode that the first clamping arm and the second clamping arm are clamped is adopted to replace the existing thread fixing mode, most manual operations are omitted, mechanical automatic clamping is adopted, the automation degree is improved, the tool changing time is shortened, the construction efficiency is improved, and the settlement risk is reduced.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is a schematic structural view of a cutter head body according to a first embodiment;
FIG. 2 is an enlarged view taken at A in FIG. 1;
FIG. 3 is a schematic structural view of FIG. 2 with the first and second clamp arms hidden;
FIG. 4 is a schematic structural view of the first clamp arm in FIG. 2;
FIG. 5 is a right side view of FIG. 4
FIG. 6 is a schematic diagram of the structure of FIG. 5 after detachment;
FIG. 7 is a schematic view of a cutter according to a first embodiment;
fig. 8 is a right side view of fig. 7.
In the attached drawings, a cutter head body 1, a cutter seat groove 2, a first clamping arm 3, a second clamping arm 4, a base 5, a first-stage rotating body 6, a second-stage rotating body 7, a third-stage rotating body 8, an opening 9, a first cover plate 10, a second cover plate 11, a third cover plate 12, a central shaft 13, a bearing 14, an expansion rod 15, a step 16, a cushion body 17, anti-skid patterns 18, a positioning rod 19, a positioning hole 20, a cutter 21 and a pressure sensor 22 are arranged on the cutter head body.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
The first embodiment is as follows:
as shown in fig. 1 to 8, the embodiment provides a fast-assembling shield cutter head, which includes a cutter head body 1 and a cutter 21. The cutter head body 1 is provided with a cutter seat groove 2 matched with a cutter handle of the cutter 21. The cutter saddle grooves 2 are four, and the four cutter saddle grooves 2 are uniformly distributed along the circumferential direction. And a positioning rod 19, a first clamping arm 3 and a second clamping arm 4 for clamping a tool shank are arranged in each tool holder groove 2. The first clamping arm 3 and the second clamping arm 4 are respectively positioned at two opposite sides of the tool holder slot 2, the first clamping arm 3 is fixedly connected with one group of telescopic rods 15 in the tool holder slot 2, and the second clamping arm 4 is fixedly connected with the other group of telescopic rods 15 in the tool holder slot 2; two positioning rods 19 are arranged, and the two positioning rods 19 are respectively connected to the other two sides of the cutter seat groove 2 in a telescopic manner. Specifically, two opposite sides of the tool apron groove 2 are respectively provided with an electromagnetic valve, valve cores of the two electromagnetic valves are respectively and fixedly connected with the two positioning rods 19 in a one-to-one correspondence manner, and the positioning rods 19 are made to extend and retract by the on-off of the electromagnetic valves; the two solenoid valves are distributed in a staggered manner, so that the positioning holes 20 are distributed on the left side of the upper portion of the tool shank and the right side of the upper portion of the tool shank. Because the locating lever 19 mainly plays the effect of horizontal location, insert the locating lever 19 through the solenoid valve in the locating hole 20 can, simple structure, stability is strong. The side of the knife holder groove 2 is provided with a groove for installing an electromagnetic valve, and the electromagnetic valve drives the corresponding positioning rod 19 to retract into the groove. The insertion of the tool shank into the tool holder groove 2 is not affected after the positioning rod 19 retracts. Two opposite side surfaces of the tool holder of the tool 21 are respectively provided with positioning holes 20 corresponding to the two positioning rods 19 one by one, and the first clamping arm 3 and the second clamping arm 4 are simultaneously pushed to be close by the two groups of telescopic rods 15, so that the tool holder is clamped in the tool holder groove 2. In addition, the width direction of the tool holder is vertical to the telescopic direction of the first clamping arm 3 or the second clamping arm 4, and the width of the tool holder is the same as that of the tool holder groove 2; the bottom wall of the tool holder groove 2 is provided with a pressure sensor 22 opposite to the lower end face of the tool holder.
All first arm lock 3 and second arm lock 4's structure is the same in this embodiment, and all includes base 5, one-level rotor 6, second grade rotor 7 and tertiary rotor 8. The shapes of the first-stage rotating body 6, the second-stage rotating body 7 and the third-stage rotating body 8 are all semi-cylinders, the semi-cylinders are half cylinders formed after being cut along a cylinder central shaft 13, and the cross sections of the semi-cylinders are semi-circular. The same side of base 5 is equipped with three opening 9, and rotates respectively in every opening 9 of base 5 and connects one the primary rotor 6. Further, the opening 9 of the base 5 penetrates through one side surface of the base 5 facing the front of the cutter head body 1; the cover comprises a first cover plate 10 which covers the side surface through which the opening 9 of the base 5 penetrates, and the first cover plate 10 is detachably connected with the corresponding side surface; the central shaft 13 of the primary rotating body 6 is rotatably coupled between the first cover plate 10 and one side wall of the opening 9 of the base 5. Every the axial tangent plane of one-level rotor 6 all is equipped with two openings 9, and rotates respectively in every opening 9 of one-level rotor 6 and connects one the second grade rotor 7. Further, the opening 9 of the primary rotor 6 penetrates one side surface of the primary rotor 6 opposite to the first cover plate 10; including covering the second apron 11 of locating the side that one-level rotor 6 opening 9 runs through, the center pin 13 of second grade rotor 7 rotates to be connected between second apron 11 and one the lateral wall of one-level rotor 6 opening 9. Every the axial tangent plane of second grade rotor 7 all is equipped with two openings 9, and rotates respectively in every opening 9 of second grade rotor 7 and connects one tertiary rotor 8. Further, the opening 9 of the secondary rotating body 7 penetrates one side surface of the secondary rotating body 7 opposite to the second cover plate 11; including covering the third apron 12 of locating the side that second grade rotor 7 opening 9 runs through, the center pin 13 of tertiary rotor 8 rotates and connects between third apron 12 and one lateral wall of second grade rotor 7 opening 9. The concrete rotation connected mode of one-level rotor 6, second grade rotor 7 and tertiary rotor 8 is: the central shaft 13 of each primary rotating body 6 is rotatably connected into the opening 9 of the base 5, the central shaft 13 of each secondary rotating body 7 is rotatably connected into the opening 9 of the primary rotating body 6, and the central shaft 13 of each tertiary rotating body 8 is rotatably connected into the opening 9 of the secondary rotating body 7; the central axes 13 of all the primary rotating bodies 6 and the central axes 13 of all the secondary rotating bodies 7 are parallel to the central axes 13 of all the tertiary rotating bodies 8. To increase the rotational friction, bearings 14 are provided at both ends of all the central shafts 13.
The specific direction of rotation of one-level rotor 6, second grade rotor 7 and tertiary rotor 8 is: the rotating directions of all the first-stage rotating bodies 6, the rotating directions of all the second-stage rotating bodies 7 and the rotating directions of all the third-stage rotating bodies 8 are all perpendicular to the telescopic direction of the telescopic rod 15, and the axial tangent planes of all the first-stage rotating bodies 6, the axial tangent planes of all the second-stage rotating bodies 7 and the axial tangent planes of all the third-stage rotating bodies 8 are located on the same plane. In addition, in order to facilitate the disassembly and assembly positioning, the side surface of the first cover plate 10 is provided with a step 16 extending into the opening 9 of the base 5, the second cover plate 11 is provided with another step 16 extending into the opening 9 of the primary rotating body 6, and the third cover plate 12 is provided with another step 16 extending into the opening 9 of the secondary rotating body 7. The first cover plate 10, the second cover plate 11 and the third cover plate 12 can quickly determine the installation positions by adopting the step 16 mode, the disassembly and assembly time is further shortened, the positioning is very convenient, and the reduction of installation errors is facilitated. During specific installation, the first cover plate 10 is connected with the corresponding side face of the base 5 through bolts, so that the first cover plate 10 presses the second cover plate 11, and the second cover plate 11 presses the third cover plate 12. That is, the first clamping arm 3 and the second clamping arm 4 are connected through the first cover plate 10 and the base 5, and then sequentially press the second cover plate 11 and the third cover plate 12, so that the designed good position can be quickly disassembled and installed. Because first arm lock 3 and second arm lock 4 are in the state that exposes, can direct and dregs contact, the inside of first arm lock 3 and second arm lock 4 can be got into to the soil stone in small, broken bits. Too much earth and stones when the accumulation can influence the swing of the first-level rotating body 6, the second-level rotating body 7 and the third-level rotating body 8, so that the regular cleaning is needed, and if the water-flushing mode is adopted, the first clamping arm 3 and the second clamping arm 4 are needed to be detached. The first clamping arm 3 and the second clamping arm 4 are convenient to disassemble and assemble, the occupied time is short, and the construction efficiency is improved.
In this embodiment, the axial tangent plane of all the three-stage rotating bodies 8 of each first clamping arm 3 is provided with a pad 17 facing the second clamping arm 4, the axial tangent plane of all the three-stage rotating bodies 8 of each second clamping arm 4 is provided with another pad 17 facing the first clamping arm 3, and the knife handle is clamped by the first clamping arm 3 and the second clamping arm 4, so that part of the pads 17 or all the pads 17 are attached to different parts of the knife handle. The anti-skid grains 18 are arranged on the surfaces of all the cushion bodies 17, which are in contact with the knife handle, and all the cushion bodies 17 are made of pressure-resistant rubber. When the cutter cuts a hard rock layer, the existing cutter and the cutter holder are not provided with a buffer structure, the cutter directly collides with the rock, and the cutter edge is greatly damaged, so that the tunneling speed of the shield tunneling machine in the rock layer is obviously reduced, the aim is to reduce the abrasion of the cutter, and particularly, the probability of the cutter breaking condition is reduced. However, the cushion layer of the pressure-resistant rubber plays a role in clamping, and on the other hand, a buffer space is provided for the cutter, so that after the cutter collides with an excessively hard rock, the pressure-resistant rubber is forcibly compressed to generate elastic deformation, the problem of hard collision is effectively avoided, the damage degree of the cutting edge is greatly reduced, and the possibility of breaking the cutter is further reduced.
Example two:
the second embodiment provides a tool changing method for a cutter head of a shield machine, which is applied to the fast-assembling shield cutter head of the first embodiment, wherein a pressure sensor and an electromagnetic valve are respectively and electrically connected with an operation panel of the shield machine, and the method comprises the following steps:
s1: the operation panel retracts the telescopic rod group and the positioning rod of the cutter seat groove, and the original cutter is pulled out of the cutter seat groove;
s2: the tool shank of the new tool is inserted into the tool holder groove, and the lower end face of the tool shank abuts against the pressure sensor;
s3: when the pressure value detected by the pressure sensor is not less than the pressure value set by the operation panel, the operation panel enables the electromagnetic valve to drive the corresponding positioning rod to be inserted into the corresponding positioning hole;
s4: the operation panel enables the telescopic rod group of the cutter seat groove to extend out simultaneously, the first clamping arm and the second clamping arm move towards the direction of the cutter handle respectively until the pad body of the first clamping arm and the pad body of the second clamping arm abut against the corresponding side face of the cutter handle tightly, so that the cutter handle is clamped, and the cutter is replaced.
Compared with the existing tool changing method, the basic operations of moving, taking and placing the tool are the same, and the difference is that the existing thread fixing mode is replaced by the mode of clamping the first clamping arm and the second clamping arm, most of manual operation is omitted, mechanical automatic clamping is adopted, the automation degree is improved, the tool changing time is shortened, the construction efficiency is improved, and the settlement risk is reduced.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (10)
1. The utility model provides a fast-assembling shield constructs blade disc which characterized in that: comprises a cutter head body and a cutter; the cutter head body is provided with a cutter seat groove matched with a cutter handle of the cutter; a positioning rod, a first clamping arm and a second clamping arm for clamping the tool shank are arranged in the tool holder groove;
the first clamping arm and the second clamping arm are respectively positioned at two opposite sides of the tool holder groove, the first clamping arm is fixedly connected with one group of telescopic rods in the tool holder groove, and the second clamping arm is fixedly connected with the other group of telescopic rods in the tool holder groove; the two positioning rods are respectively connected to the other two sides of the cutter seat groove in a telescopic manner;
two opposite side surfaces of the cutter handle of the cutter are respectively provided with positioning holes corresponding to the two positioning rods one to one, and the first clamping arm and the second clamping arm are simultaneously pushed to be close by the two groups of telescopic rods so as to clamp the cutter handle in the cutter seat groove;
the first clamping arm and the second clamping arm have the same structure and respectively comprise a base, a primary rotating body, a secondary rotating body and a tertiary rotating body; the shapes of the first-stage rotating body, the second-stage rotating body and the third-stage rotating body are semi-cylinders;
the same side surface of the base is provided with a plurality of openings, and each opening of the base is respectively and rotatably connected with one primary rotating body; the axial tangent plane of each primary rotating body is provided with a plurality of openings, and each opening of the primary rotating body is respectively and rotatably connected with one secondary rotating body; the axial tangent plane of each secondary rotating body is provided with a plurality of openings, and each opening of the secondary rotating body is respectively and rotatably connected with one tertiary rotating body;
the rotating directions of all the first-stage rotating bodies, the rotating directions of all the second-stage rotating bodies and the rotating directions of all the third-stage rotating bodies are all vertical to the telescopic direction of the telescopic rod, and the axial tangent planes of all the first-stage rotating bodies, the axial tangent planes of all the second-stage rotating bodies and the axial tangent planes of all the third-stage rotating bodies are all located on the same plane;
the axial tangent plane of all tertiary rotors of first arm lock all is equipped with the pad body towards the second arm lock, the axial tangent plane of all tertiary rotors of second arm lock all is equipped with the other pad body towards first arm lock, presss from both sides tight handle of a knife through first arm lock and second arm lock, and then makes some pad bodies or all pad bodies paste the different positions of tight handle of a knife.
2. The quick-assembling shield cutter head of claim 1, characterized in that: the two opposite sides of the cutter seat groove are respectively provided with an electromagnetic valve, valve cores of the two electromagnetic valves are respectively and fixedly connected with the two positioning rods in a one-to-one correspondence manner, and the positioning rods are further stretched through the on-off of the electromagnetic valves; the two electromagnetic valves are distributed in a staggered mode, so that the positioning holes are distributed on the left side of the upper portion of the cutter handle and the right side of the upper portion of the cutter handle.
3. The quick-assembling shield cutter head of claim 2, characterized in that: the side of the cutter seat groove is provided with a groove for installing an electromagnetic valve, and the electromagnetic valve drives the corresponding positioning rod to retract into the groove.
4. The quick-assembling shield cutter head of claim 2, characterized in that: the width direction of the knife handle is perpendicular to the telescopic direction of the first clamping arm or the second clamping arm, and the width of the knife handle is the same as that of the knife holder groove; the bottom wall of the tool holder groove is provided with a pressure sensor opposite to the lower end face of the tool holder.
5. The quick-assembling shield cutter head of claim 1, characterized in that: the central shaft of each primary rotating body is rotatably connected into the opening of the base, the central shaft of each secondary rotating body is rotatably connected into the opening of the primary rotating body, and the central shaft of each tertiary rotating body is rotatably connected into the opening of the secondary rotating body; the central axes of all the first-stage rotating bodies and the central axes of all the second-stage rotating bodies are parallel to the central axes of all the third-stage rotating bodies.
6. The quick-assembling shield cutter head of claim 5, characterized in that: the opening of the base penetrates through one side face, facing the front of the cutter head body, of the base; the first cover plate is arranged on the side surface through which the opening of the base penetrates, and the first cover plate is detachably connected with the corresponding side surface; the central shaft of the primary rotating body is rotatably connected between the first cover plate and one side wall of the opening of the base.
7. The quick-assembling shield cutter head of claim 6, characterized in that: the opening of the primary rotating body penetrates through one side face, opposite to the first cover plate, of the primary rotating body; the second apron of the side that the one-level rotor opening runs through is located including the lid, and the center pin of second grade rotor rotates to be connected between second apron and one-level rotor open-ended lateral wall.
8. The quick-assembling shield cutter head of claim 7, characterized in that: the opening of the secondary rotating body penetrates through one side face, opposite to the second cover plate, of the secondary rotating body; the third apron of the side that the second grade rotor opening runs through is located including the lid, and the center pin of tertiary rotor rotates to be connected between third apron and second grade rotor open-ended lateral wall.
9. The quick-assembling shield cutter head of claim 8, characterized in that: the side of first apron is equipped with the step that stretches into in the base opening, the second apron be equipped with stretch into one-level rotor opening in the other step, the third apron is equipped with the other step that stretches into in the second grade rotor opening.
10. A cutter changing method for a cutter head of a shield tunneling machine is characterized by comprising the following steps: the quick-assembling shield tunneling cutter head applied to the claim 4, wherein the pressure sensor and the electromagnetic valve are respectively and electrically connected with an operation panel of the shield tunneling machine, and the method comprises the following steps:
s1: the operation panel retracts the telescopic rod group and the positioning rod of the cutter seat groove, and the original cutter is pulled out of the cutter seat groove;
s2: the tool shank of the new tool is inserted into the tool holder groove, and the lower end face of the tool shank abuts against the pressure sensor;
s3: when the pressure value detected by the pressure sensor is not less than the pressure value set by the operation panel, the operation panel enables the electromagnetic valve to drive the corresponding positioning rod to be inserted into the corresponding positioning hole;
s4: the operation panel enables the telescopic rod group of the cutter seat groove to extend out simultaneously, the first clamping arm and the second clamping arm move towards the direction of the cutter handle respectively until the pad body of the first clamping arm and the pad body of the second clamping arm abut against the corresponding side face of the cutter handle tightly, so that the cutter handle is clamped, and the cutter is replaced.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110931287.XA CN113586071B (en) | 2021-08-13 | 2021-08-13 | Quick-mounting shield cutter head and cutter changing method of shield machine cutter head |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110931287.XA CN113586071B (en) | 2021-08-13 | 2021-08-13 | Quick-mounting shield cutter head and cutter changing method of shield machine cutter head |
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| CN113586071B CN113586071B (en) | 2023-12-12 |
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| CN202348287U (en) * | 2011-11-25 | 2012-07-25 | 盾建重工制造有限公司 | Installation structure of shield machine scraper |
| CN202531184U (en) * | 2012-02-06 | 2012-11-14 | 盾建重工制造有限公司 | Fixing structure of scraping knife of shield machine |
| CN107218051A (en) * | 2017-08-06 | 2017-09-29 | 薛飞 | A kind of quick-replaceable shield machine cutter |
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| CN108868803A (en) * | 2018-09-29 | 2018-11-23 | 华东交通大学 | A kind of shield machine structure and cutter changing method facilitating cutter changing |
| CN208702416U (en) * | 2018-09-20 | 2019-04-05 | 唐伟 | A kind of rock tunnel(ling) machine being easily installed cutter |
| CN110617075A (en) * | 2019-10-30 | 2019-12-27 | 中铁开发投资集团有限公司 | Shield tunneling cutter head adjacent to sensitive building with ultra-small distance |
| CN211314217U (en) * | 2019-12-12 | 2020-08-21 | 山东拓达工程设备有限公司 | Half-coated convenient detachable shield scraper |
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2021
- 2021-08-13 CN CN202110931287.XA patent/CN113586071B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000110485A (en) * | 1998-10-08 | 2000-04-18 | Taisei Corp | Bit replacing type shield machine |
| JP2002106288A (en) * | 2000-10-04 | 2002-04-10 | Hitachi Zosen Corp | Cutter bit support structure for shield machine |
| CN202348287U (en) * | 2011-11-25 | 2012-07-25 | 盾建重工制造有限公司 | Installation structure of shield machine scraper |
| CN202531184U (en) * | 2012-02-06 | 2012-11-14 | 盾建重工制造有限公司 | Fixing structure of scraping knife of shield machine |
| CN107218051A (en) * | 2017-08-06 | 2017-09-29 | 薛飞 | A kind of quick-replaceable shield machine cutter |
| CN107542476A (en) * | 2017-10-16 | 2018-01-05 | 中船重型装备有限公司 | A kind of shock resistance shield machine scraper |
| CN208702416U (en) * | 2018-09-20 | 2019-04-05 | 唐伟 | A kind of rock tunnel(ling) machine being easily installed cutter |
| CN108868803A (en) * | 2018-09-29 | 2018-11-23 | 华东交通大学 | A kind of shield machine structure and cutter changing method facilitating cutter changing |
| CN110617075A (en) * | 2019-10-30 | 2019-12-27 | 中铁开发投资集团有限公司 | Shield tunneling cutter head adjacent to sensitive building with ultra-small distance |
| CN211314217U (en) * | 2019-12-12 | 2020-08-21 | 山东拓达工程设备有限公司 | Half-coated convenient detachable shield scraper |
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| Publication number | Publication date |
|---|---|
| CN113586071B (en) | 2023-12-12 |
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