CN210422623U - Shield machine cutter with buffer device - Google Patents
Shield machine cutter with buffer device Download PDFInfo
- Publication number
- CN210422623U CN210422623U CN201921408136.0U CN201921408136U CN210422623U CN 210422623 U CN210422623 U CN 210422623U CN 201921408136 U CN201921408136 U CN 201921408136U CN 210422623 U CN210422623 U CN 210422623U
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- China
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- cutter
- buffer
- slotted hole
- seat
- guide rod
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- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model discloses a take buffer's shield structure machine cutter, including being fixed in the cutter seat on the spoke of shield structure machine blade disc and installing the cutter on this cutter seat, be equipped with the cutter sword on this cutter, the cutter is located a side that its cutter sword is close to this cutter direction of advance and rotates connect in on the cutter seat, this cutter is located another side that this cutter direction of advance was kept away from to its cutter sword and have the clearance between the cutter seat, and another side of this cutter with be equipped with buffer between the cutter seat. The utility model discloses a buffer has been designed in cutter blade holder, the cutting edge when the cutter receives the impact back in work, can promote the cutter around the round pin axle rotation, buffer spring among the compression buffer, this process has prolonged the time of the hard thing of cutting edge cutting to play the buffering effect, reduce the probability that the cutting edge collapses the sword, promote the ability of shocking resistance of cutter by a wide margin, thereby reduce and cause the blade disc to damage because of the cutter collapses the sword, and then influence the problem that the shield constructs the machine excavation.
Description
Technical Field
The utility model belongs to the technical field of shield constructs quick-witted equipment for tunnel excavation, specific saying so relates to a take buffer's shield to construct quick-witted cutter.
Background
When a tunnel is excavated by a cutter head of a shield tunneling machine, hard nuclei such as stones contained in a geological unevenness or a soil layer are often encountered, when the cutter excavates in the stratum, impacts of different degrees can be received, because the cutter excavates a soil body by adopting a cutting and scraping principle, sliding friction is formed between the cutting edge and the soil body, the cutting edge is required to be capable of keeping the sharpness of the cutter and have good wear resistance, the cutting edge of the cutter is commonly made of hard alloy, the hard alloy has the advantages of high hardness and good wear resistance, the defect of shock resistance is that the cutter is easy to break, even breaks, and the cutter loses the function of cutting the soil body. Once the cutter loses the soil cutting capability, the cutter head can be worn by the cutter head body after being used continuously, if the cutter head is not found timely, the structure of the cutter head is damaged, the excavation progress of the tunnel is seriously influenced, if the cutter head is not easy to open a cabin in a sandy stratum, more serious consequences can be caused, and even accidents of burying a shield machine and changing the tunnel into a waste can also happen.
The method for solving the problem of cutter edge breakage in the industry at present mainly improves the design structural strength of the cutter and the impact resistance of the cutter. The cutter is made large and heavy, the cost is increased greatly, and the arrangement of the cutter in the limited space of the central area of the cutter disc can reduce the opening of the central area, influence the flow of dregs and easily cause mud cakes (the mud cakes are also a great problem influencing the cutting effect of the cutter disc).
Disclosure of Invention
In order to overcome the defects, the utility model provides a take buffer's shield constructs quick-witted cutter plays the buffering effect to the cutter, reduces the probability that the cutter collapses the sword to do not influence the intensity of former cutter structure, simple structure easily makes, installs and maintains.
The utility model discloses a take buffer's shield structure machine cutter, including being fixed in the cutter seat on the spoke of shield structure machine blade disc and installing the cutter on this cutter seat, be equipped with the cutter sword on this cutter, the cutter is located a side edge that its cutter sword is close to this cutter direction of advance and rotates connect in on the cutter seat, this cutter is located another side edge that this cutter direction of advance was kept away from to its cutter sword and have the clearance between the cutter seat, and another side edge of this cutter with be equipped with buffer between the cutter seat.
As a further improvement, the buffering device comprises a buffering guide rod and a buffering spring, a big slotted hole is arranged on the cutter seat, the bottom of the big slotted hole is provided with a small slotted hole with a radius smaller than the big slotted hole and concentric with the big slotted hole, the radius of the buffering guide rod is smaller than the radius of the small slotted hole, one end of the buffering guide rod is fixed on the other side surface of the cutter, the other end of the buffering guide rod is arranged in the big slotted hole and the small slotted hole, and the buffering spring sleeve is arranged and limited in the buffering guide rod is positioned outside the part of the big slotted hole.
As a further improvement, the guide rod one end is provided with a limiting ring with a radius smaller than that of the big slotted hole, and the limiting ring is movably arranged in the big slotted hole.
As a further improvement of the utility model, a guide rod mounting groove is arranged on the other side surface of the cutter, and the head part of one end of the guide rod is fixed in the guide rod mounting groove.
As a further improvement, one side edge of the cutter is rotationally connected with the cutter seat through a pin shaft.
As a further improvement, the cutter seat is welded and fixed on spokes of the cutter head of the shield tunneling machine.
The utility model has the advantages that: when the cutter cuts hard objects, the buffer device in the cutter holder has a buffer effect on the cutter, so that the probability of tipping the cutter is reduced; the invention does not change the main structure of the original cutter and the cutter holder of the cutter, and does not influence the strength of the original cutter structure; the invention has simple structure and is easy to manufacture, install and maintain.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic sectional view of the present invention;
fig. 3 is a schematic view of the working state of the present invention.
The following description is made with reference to the accompanying drawings:
1-a cutter; 2-pin shaft;
3-cutter seat; 4-buffer guide rod;
5-buffer spring; 6-spoke;
11-cutting edge; 12-guide bar mounting groove;
31-large slotted hole; 32-small slotted hole;
41-stop collar.
Detailed Description
The following description of a preferred embodiment of the present invention will be made in conjunction with the accompanying drawings. However, the scope of the present invention is not limited to the following embodiments, and all simple equivalent changes and modifications made by the claims and the contents of the specification are still included in the scope of the present invention.
Referring to fig. 1-3, for a take buffer's shield structure machine cutter, including being fixed in cutter seat 3 on the spoke 6 of shield structure machine blade disc and installing cutter 1 on this cutter seat, be equipped with cutting edge 11 on this cutter, the cutter is located its cutting edge and is close to a side of this cutter direction of advance rotate connect in on the cutter seat, this cutter is located its cutting edge keep away from another side of this cutter direction of advance with have the clearance between the cutter seat, and another side of this cutter with be equipped with buffer between the cutter seat.
The buffering device comprises a buffering guide rod 4 and a buffering spring 5, a large slotted hole 31 is formed in the cutter seat, a small slotted hole 32 which is smaller than the large slotted hole in radius and concentric with the large slotted hole is formed in the bottom of the large slotted hole, the radius of the buffering guide rod is smaller than the radius of the small slotted hole, one end of the buffering guide rod is fixed to the other side face of the cutter, the other end of the buffering guide rod penetrates through the large slotted hole and the small slotted hole, and the buffering spring is sleeved and limited on the portion, located outside the large slotted hole, of the buffering guide rod.
In addition, one end of the guide rod is provided with a limiting ring 41 with the radius smaller than that of the big slotted hole, and the limiting ring is movably arranged in the big slotted hole. A guide rod mounting groove 12 is formed in the other side surface of the cutter, and the head of one end of the guide rod is fixed in the guide rod mounting groove. One side edge of the cutter is rotatably connected to the cutter seat through a pin shaft 2. And the cutter seat is welded and fixed on a spoke 6 of a cutter head of the shield tunneling machine.
This shield constructs quick-witted cutter with buffer, because cutter blade holder welding is on the spoke of shield structure machine blade disc, the cutter passes through the round pin axle and installs together with the cutter blade holder, and buffer installs in the cutter blade holder, and buffer spring is by the pre-compaction, presses on the atress seat that the cutter was processed in advance through the buffering guide arm, has certain clearance between the another side of cutter and the face that the cutter corresponds. After the cutting edge 11 of the cutter 1 is impacted in work, the cutter 1 can be pushed to rotate around the pin shaft 2, the buffer spring in the buffer device is compressed, the time of cutting the hard objects by the cutting edge is prolonged in the process, the buffer effect is achieved, and the probability of edge breakage of the cutting edge is reduced.
Wherein, the buffer spring 5 in the buffer device can be replaced by other elastic materials; a plurality of buffer devices can be arranged in each cutter seat to improve the initial force of the buffer devices on the cutter so as to increase the initial cutting capacity of the cutter.
The shield machine cutter with the buffer device is arranged on a cutter head of a shield machine and is mainly used for cutting a stratum with uneven hardness or a stratum with hard cores in a cutting soil layer so as to reduce cutter tipping.
Therefore, the buffer device is designed in the cutter holder of the cutter, when the cutting edge of the cutter is impacted in work, the cutter can be pushed to rotate around the pin shaft 2, the buffer spring in the buffer device is compressed, the time for the cutting edge to cut hard objects is prolonged in the process, the buffer effect is achieved, the probability of the cutting edge breaking is reduced, the impact resistance of the cutter is greatly improved, and the problem that the cutter disc is damaged due to the cutting edge breaking and the excavation of a shield machine is influenced is solved.
When the cutter cuts hard objects, the buffer device in the cutter holder has a buffer effect on the cutter, so that the probability of tipping the cutter is reduced; the invention does not change the main structure of the original cutter and the cutter holder of the cutter, and does not influence the strength of the original cutter structure; the invention has simple structure and is easy to manufacture, install and maintain.
Claims (6)
1. The utility model provides a take buffer's shield constructs quick-witted cutter, is equipped with cutting edge (11), its characterized in that including being fixed in cutter seat (3) on spoke (6) of shield structure machine blade disc and installing cutter (1) on this cutter seat on this cutter: the cutter is characterized in that one side edge of the cutter, which is positioned at the position where the cutter edge of the cutter is close to the advancing direction of the cutter, is rotatably connected to the cutter seat, a gap is reserved between the other side edge of the cutter, which is positioned at the position where the cutter edge of the cutter is far away from the advancing direction of the cutter, and the cutter seat, and a buffer device is arranged between the other side edge of the cutter and the cutter seat.
2. The shield tunneling machine cutter with the buffering device as claimed in claim 1, wherein: the buffer device comprises a buffer guide rod (4) and a buffer spring (5), a large slotted hole (31) is formed in the cutter holder, a small slotted hole (32) with a radius smaller than that of the large slotted hole and concentric with the large slotted hole is formed in the bottom of the large slotted hole, the radius of the buffer guide rod is smaller than that of the small slotted hole, one end of the buffer guide rod is fixed to the other side face of the cutter, the other end of the buffer guide rod penetrates through the large slotted hole and the small slotted hole, and the buffer spring is sleeved with the buffer guide rod and limited to the position outside the part of the large slotted hole.
3. The shield tunneling machine cutter with the buffering device as claimed in claim 2, wherein: one end of the buffer guide rod is provided with a limiting ring (41) with the radius smaller than that of the large slotted hole and the same as that of the large slotted hole, and the limiting ring is movably arranged in the large slotted hole.
4. The shield tunneling machine cutter with the buffering device as claimed in claim 2, wherein: and a guide rod installation groove (12) is formed in the other side surface of the cutter, and the head of one end of the buffer guide rod is fixed in the guide rod installation groove.
5. The shield tunneling machine cutter with the buffering device as claimed in claim 1, wherein: one side edge of the cutter is rotatably connected to the cutter seat through a pin shaft (2).
6. The shield tunneling machine cutter with the buffering device as claimed in claim 1, wherein: the cutter seat is welded and fixed on a spoke (6) of the cutter head of the shield tunneling machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921408136.0U CN210422623U (en) | 2019-08-28 | 2019-08-28 | Shield machine cutter with buffer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921408136.0U CN210422623U (en) | 2019-08-28 | 2019-08-28 | Shield machine cutter with buffer device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210422623U true CN210422623U (en) | 2020-04-28 |
Family
ID=70364785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921408136.0U Active CN210422623U (en) | 2019-08-28 | 2019-08-28 | Shield machine cutter with buffer device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210422623U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110424975A (en) * | 2019-08-28 | 2019-11-08 | 徐工集团凯宫重工南京股份有限公司 | Shield machine cutter with buffer unit |
-
2019
- 2019-08-28 CN CN201921408136.0U patent/CN210422623U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110424975A (en) * | 2019-08-28 | 2019-11-08 | 徐工集团凯宫重工南京股份有限公司 | Shield machine cutter with buffer unit |
| CN110424975B (en) * | 2019-08-28 | 2024-04-23 | 徐工集团凯宫重工南京股份有限公司 | Shield machine cutter with buffer device |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Shield cutter with buffer device Effective date of registration: 20221128 Granted publication date: 20200428 Pledgee: Bank of Beijing Limited by Share Ltd. Nanjing branch Pledgor: XCMG KAIGONG HEAVY INDUSTRY NANJING Co.,Ltd. Registration number: Y2022980023329 |