CN214366076U - Hob and cutting device using same - Google Patents
Hob and cutting device using same Download PDFInfo
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- CN214366076U CN214366076U CN202022723565.6U CN202022723565U CN214366076U CN 214366076 U CN214366076 U CN 214366076U CN 202022723565 U CN202022723565 U CN 202022723565U CN 214366076 U CN214366076 U CN 214366076U
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Abstract
The utility model discloses a hobbing cutter and use cutting device of this hobbing cutter has solved the technical problem of current entry driving machine cutting reinforced concrete structure thing and reinforced concrete pipeline difficulty. The utility model discloses a cutter body is provided with the cutting sword area on the cutter body, is provided with passive cutting helical tooth on the cutting sword area. The cutter body is arranged on a cutter head of the tunneling machine as required, the cutter head drives the cutter body to rotate synchronously, the passive cutting spiral teeth can rotate relative to the cutter head, and the passive cutting spiral teeth on the cutter body can cut a tunnel face by applying shield force. When the passive cutting spiral teeth cut the face, the cutter head drives the cutter body to synchronously move relative to the face while rotating, the passive cutting spiral teeth rotate relative to the cutter head under the action of the counter force of the face, and the rolling passive cutting spiral teeth can easily cut concrete stones and cut off reinforcing steel bars.
Description
Technical Field
The utility model relates to a non-excavation pipeline updates technical field, especially indicates a hobbing cutter and uses cutting device of this hobbing cutter.
Background
In the prior art, when urban underground waste pipelines are updated, most of the conventional methods adopt an open cut construction mode to update the pipelines, but the open cut method is adopted to carry out pipeline construction, so that the construction efficiency is low, and the surrounding environment is greatly influenced in the construction process, so that the method for updating the pipelines by adopting a non-excavation construction mode has great research value.
At present, various heading machines are adopted to carry out non-excavation type pipeline updating construction, for example, the cutting of the shield machine and the pipe jacking machine to various soil layers and rocks can play a better effect. Generally, a circular hob is arranged on a cutter disc to roll and crush soil layers or rocks, the circular hob comprises a cutter body and a cutter ring arranged on the cutter body, the cutter body is connected with a cutter shaft through a bearing, the cutter shaft is fixedly arranged on a cutter holder, and the cutter has a good effect of cutting the rocks or plain concrete. However, the existing cutter has insufficient cutting capability and poor effect on reinforced concrete structural members and underground reinforced concrete building structures, and can not cut off the reinforcing steel bars. When the fixed cutter rotates along with the cutter head along the circumferential direction to cut the reinforced concrete, the problems of overlarge volume of cutting slag, overlong length of the reinforcing steel bar, difficulty in breaking and the like often occur. Or sometimes, the concrete block is easy to clamp and synchronously rotate with the cutter head when a harder structure is encountered, so that the concrete block is difficult to cut, or the cutter head is suddenly stopped under overload due to overlarge friction force between the stone block and the cutter head, so that the cutting efficiency is seriously restricted.
Through retrieval, the current utility model patent with the publication number of 2007.02.21 and the publication number of CN2871843 discloses an automatic slag-discharging spiral hob, which comprises a spiral hob body, a hob shaft, a bearing, a tool apron, a bearing internal and external pressure balance piston, a piston oil cylinder and alloy teeth, wherein the excircle of the spiral hob body is provided with a spiral-shaped embedded rib, and the alloy teeth are embedded on the embedded rib; the roller shaft is hollow, the piston oil cylinder and the bearing internal and external pressure balance piston are arranged in the hollow space, and the piston oil cylinder is provided with an oil through hole communicated with the bearing cavity; compared with the traditional hob, the technical scheme is convenient for slag discharge and can balance the internal and external pressure of the bearing, but because the alloy teeth scattered on the embedded teeth ribs break rock, the steel bars cannot be cut off, the reinforced concrete structural member is difficult to cut, and the unbroken structural member is easier to block in the embedded teeth rib grooves for slag discharge and synchronously rotates along with the cutterhead, so that the cutting is difficult, or the cutterhead is rotated and overloaded due to overlarge friction force between stones and the cutterhead, and the cutting efficiency is seriously restricted. Therefore, it is necessary to effectively improve the efficiency of cutting reinforced concrete by the cutterhead by developing improved design research of the cutters.
Disclosure of Invention
Not enough to among the above-mentioned background art, the utility model provides a hobbing cutter has solved the technical problem of current entry driving machine cutting reinforced concrete structure thing and reinforced concrete pipeline difficulty.
The technical scheme of the utility model is realized like this: a hob comprises a hob body, wherein a cutting knife belt is arranged on the hob body, and passive cutting spiral teeth are arranged on the cutting knife belt. The cutter body is arranged on a cutter head of the tunneling machine as required, the cutter head drives the cutter body to rotate synchronously, the passive cutting spiral teeth can rotate relative to the cutter head, and the passive cutting spiral teeth on the cutter body can cut a tunnel face by applying shield force. When the passive cutting spiral teeth cut the face, the cutter head drives the cutter body to synchronously move relative to the face while rotating, the passive cutting spiral teeth rotate relative to the cutter head under the action of the counter force of the face, and the rolling passive cutting spiral teeth can easily cut concrete stones and cut off reinforcing steel bars.
Furthermore, the included angle between the direction of the unfolding plane of the passive cutting spiral teeth and the axis of the cutter body is 25-75 degrees, so that the cutting palm surface of the passive cutting spiral teeth is more sufficient and convenient during rotation, and meanwhile, the broken stones cut by the passive cutting spiral teeth can flow out conveniently.
Furthermore, the cutter body is cylindrical or conical so as to adapt to different geological conditions.
Further, the passive cutting helical teeth are of a left-handed involute structure or a right-handed involute structure.
Furthermore, the cutter body comprises a rolling bearing body, a revolute pair is formed between the rolling bearing body and the passive cutting spiral teeth, the cutting rotary motion of the passive cutting spiral teeth is realized, and the rolling bearing body is positioned, installed and arranged through a connecting gland.
Further, mounting holes are formed in the connecting gland and the cutter body, and a cutter shaft fixedly connected with the cutter holder is fixedly arranged in the mounting holes.
Furthermore, the rolling bearing body is internally provided with wear-resistant and pressure-resistant lubricating oil, and the injection amount of the wear-resistant and pressure-resistant lubricating oil is two thirds of the cavity capacity of the rolling bearing body, so that the rotating stability of the cutting knife belt is ensured.
Furthermore, passive cutting helical tooth is many and interval setting on the cutter body, and the rubble of being convenient for under the cutting of passive cutting helical tooth is conveniently kept away from between the adjacent passive cutting helical tooth.
The utility model provides a cutting device, is including being provided with the rotation blade disc of hobbing cutter, rotation blade disc carries out rotary motion by power unit drive, the hobbing cutter arranges that a plurality of and each hobbing cutter all through connecting gland fixed mounting on rotating the blade disc.
Furthermore, the precession cutting structure surface of the hob and the cut piece form an included angle of 45 degrees for cutting.
The beneficial effects of the utility model include:
(1) the passive cutting helical teeth are adopted, and the cutter body and the passive cutting are in running fit through the rolling bearing body, so that a good cutting effect can be achieved, and the cutter can be suitable for cutting hard rock, plain concrete, reinforced concrete piles, columns, walls, pipeline structures and other reinforced concrete components in heading machines such as shields and jacking pipes.
(2) The passive cutting spiral teeth on the cutting knife belt can freely roll along with the cutting knife belt, so that a better stamping-resistant effect can be achieved, and the service life of the cutter is prolonged to a certain extent.
(3) The density of the passive cutting spiral teeth can be designed according to requirements, and when harder stones are cut, the density of the passive cutting spiral tooth-shaped teeth can be increased, so that the cutting effect is ensured.
Drawings
In order to illustrate the embodiments of the present invention more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and that other drawings can be obtained by those skilled in the art without inventive work.
Figure 1 is a front view of embodiment 1 of the present invention,
FIG. 2 is a side view of FIG. 1;
FIG. 3 is a cross-sectional view of FIG. 1;
FIG. 4 is an expanded view of the cutting blade band of FIG. 1;
FIG. 5 is a front view of embodiment 2 of the present invention;
FIG. 6 is a left side view of FIG. 5;
FIG. 7 is a cross-sectional view of FIG. 5;
wherein: 1-passive cutting helical teeth, 2-cutting knife belt, 3-rolling bearing body, 4-connecting gland, 5-bolt, 6-knife body and 7-passive rotating ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.
As shown in fig. 2, the passive cutting helical tooth 1 is deburred and blunted by sharp edges. The cutting tool belt 2 is provided with a plurality of passive cutting spiral teeth 1, and each passive cutting spiral tooth 1 is arranged at equal intervals, so that broken stones cut by the passive cutting spiral teeth 1 can be conveniently reserved between the adjacent passive cutting spiral teeth 1.
As shown in fig. 3, the cutter body 6 includes a passive rotating ring 7 at the outermost periphery, and the cutter belt 2 is an area on the outer wall of the passive rotating ring 2. The passive rotating ring 7 is connected with the left connecting gland 4 and the right connecting gland 4 through the rolling bearing body 3, the two connecting glands 4 are connected with the cutter body 6 through the bolts 5, the connecting glands 4 are fixedly connected with the cutter holder, and the passive rotating ring 7 is in rotating connection with the cutter holder through the rolling bearing body 3. The connecting gland 4 and the cutter body 6 are internally provided with mounting holes, the mounting holes are internally and fixedly provided with cutter shafts fixedly connected with the cutter seats, the cutter shafts are fixedly connected between the cutter seats and the cutter body 6 and the connecting gland 4, the structural reliability is ensured, the rotating body is limited to the cutting cutter belt 2 and the passive cutting spiral tooth blade 1, and the cutter body 6 and the connecting gland 4 are kept fixed.
Furthermore, wear-resisting pressure-resisting lubricating oil is arranged in the rolling bearing body 3, and the injection amount of the wear-resisting pressure-resisting lubricating oil is two thirds of the cavity capacity of the rolling bearing body 3 so as to ensure the rotating stability of the cutting knife belt 2.
As shown in figure 4, the included angle between the direction of the unfolding plane of the passive cutting helical tooth 1 and the axis of the cutter body 6 is 25-75 degrees, so that the cutting tunnel face of the passive cutting helical tooth 1 is fully and conveniently cut during rotation, and simultaneously, the broken stones cut by the passive cutting helical tooth 1 can conveniently flow out.
When the device is used, the tool apron is installed on a tool apron of a heading machine as required, the tool apron drives the tool apron to rotate synchronously, the passive rotating ring 2 rotates relative to the tool apron through the rolling bearing body 3, and the passive cutting spiral teeth 1 on the passive rotating ring 2 can cut a tunnel face by applying shield force. When the passive cutting helical teeth 1 cut the tunnel face, the cutter head drives the cutter holder to synchronously move relative to the tunnel face, the cutter holder moves forwards while rotating, the cutting cutter belt 2 rotates on the cutter holder under the counter-force action of the tunnel face, the passive cutting helical teeth 1 on the passive rotating ring 2 are matched, and the rolling passive cutting helical teeth 1 can easily cut concrete stones and cut off reinforcing steel bars. The hob can be suitable for cutter heads of shield machines and pipe-pushing machines for cutting rocks, and is suitable for cutting foundations, pipelines, piles, columns, walls and plates built by reinforced concrete.
All components in the embodiment have the performances of strength, hardness, wear resistance, stability and the like required by the shield cutter, and the requirements of shield construction technical specifications are met in the construction technical specifications
Example 2 a hob, as shown in fig. 5-7, the shape of the hob body 6 is a conical cylinder.
The other structure of this embodiment is the same as embodiment 1.
Embodiment 3, a cutting device, including being provided with the rotation blade disc of hobbing cutter, the rotation blade disc carries out rotary motion by power unit drive, the hobbing cutter arranges that a plurality of and each hobbing cutter all through connecting gland 4 fixed mounting on the rotation blade disc.
Furthermore, the precession cutting structure surface of the hob and the cut piece form an included angle of 45 degrees for cutting.
The other structure of this embodiment is the same as embodiment 1.
The present invention is not exhaustive and is well known to those skilled in the art.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A hobbing cutter, its characterized in that: comprises a cutter body (6), wherein a cutting cutter belt (2) is arranged on the cutter body (6), and passive cutting spiral teeth (1) are arranged on the cutting cutter belt (2); the cutter body (6) comprises a rolling bearing body (3), a revolute pair is formed between the rolling bearing body (3) and the passive cutting spiral teeth (1), the cutting rotary motion of the passive cutting spiral teeth (1) is achieved, and the rolling bearing body (3) is located, installed and arranged through a connecting gland (4).
2. The hob according to claim 1, characterized in that: the included angle between the direction of the unfolding plane of the passive cutting helical teeth (1) and the axis of the cutter body (6) is 25-75 degrees.
3. The hob according to claim 1 or 2, characterized in that: the cutter body (6) is cylindrical or conical.
4. The hob according to claim 3, characterized in that: the passive cutting helical teeth (1) are in a left-handed involute structure or a right-handed involute structure.
5. The hob according to any one of claims 1, 2, 4, characterized in that: and mounting holes are formed in the connecting gland (4) and the cutter body (6), and a cutter shaft fixedly connected with the cutter holder is fixedly arranged in the mounting holes.
6. The hob according to claim 5, characterized in that: and wear-resistant pressure-resistant lubricating oil is arranged in the rolling bearing body (3), and the injection amount of the wear-resistant pressure-resistant lubricating oil is two thirds of the cavity capacity of the rolling bearing body (3).
7. The hob according to any one of claims 1, 2, 4, 6, characterized in that: the passive cutting spiral teeth (1) are arranged on the cutter body (6) at intervals.
8. A cutting device comprising the hob according to any one of the claims 1 to 7, characterized in that: the rotary cutter head is driven by a power mechanism to perform rotary motion, and the hobs are arranged into a plurality of hobs and are fixedly arranged on the rotary cutter head through connecting glands (4).
9. The cutting apparatus of claim 8, wherein: and the precession cutting structure surface of the hob and the cut piece are cut at an included angle of 45 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022723565.6U CN214366076U (en) | 2020-11-23 | 2020-11-23 | Hob and cutting device using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022723565.6U CN214366076U (en) | 2020-11-23 | 2020-11-23 | Hob and cutting device using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214366076U true CN214366076U (en) | 2021-10-08 |
Family
ID=77978067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022723565.6U Active CN214366076U (en) | 2020-11-23 | 2020-11-23 | Hob and cutting device using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214366076U (en) |
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2020
- 2020-11-23 CN CN202022723565.6U patent/CN214366076U/en active Active
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