CN220890200U - Unbalanced high-pressure-resistant shaft hob - Google Patents
Unbalanced high-pressure-resistant shaft hob Download PDFInfo
- Publication number
- CN220890200U CN220890200U CN202322646839.XU CN202322646839U CN220890200U CN 220890200 U CN220890200 U CN 220890200U CN 202322646839 U CN202322646839 U CN 202322646839U CN 220890200 U CN220890200 U CN 220890200U
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- hob
- ring
- end cover
- tapered roller
- hole
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- 238000013461 design Methods 0.000 claims abstract description 16
- 230000007613 environmental effect Effects 0.000 claims abstract description 11
- 230000006978 adaptation Effects 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 abstract description 16
- 230000008859 change Effects 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 7
- 230000003044 adaptive effect Effects 0.000 abstract description 3
- 230000005641 tunneling Effects 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000011435 rock Substances 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model belongs to the technical field of shield machine cutters, and particularly relates to an unbalanced high-pressure-resistant shaft hob, which comprises a hob body, wherein the hob body comprises a hob shaft, two tapered roller bearings, a hob body and a hob ring which are sequentially arranged from inside to outside, one side of the tapered roller bearing is provided with a positioning ring with a Z-shaped cross section, the outer side of the positioning ring is provided with an end cover with a Z-shaped cross section, one side of the positioning ring, which is close to the end cover, is provided with a plurality of annular plates with sequentially increasing inner and outer diameters, an adaptive annular groove is formed in the end cover corresponding to the annular plates, a hole groove is formed in the hob shaft on the right side, and a balancing device for balancing environmental pressure changes is arranged in the hole groove. The hob sealing device is reasonable in design, simple in structure, convenient to process, convenient to balance environmental pressure change, capable of improving bearing capacity, capable of improving reliability of hob sealing, guaranteeing use effect and meeting use requirements.
Description
Technical Field
The utility model belongs to the technical field of shield machine cutters, and particularly relates to an unbalanced high-pressure-resistant shaft hob.
Background
With the improvement of urban level in China, a great number of intercity railways, high-speed railways and urban rail transit construction are required to be developed, and a plurality of tunnel engineering is involved.
At present, in the tunnel construction process, more mechanical equipment needs to be applied, such as a shield tunneling machine or a pipe jacking machine, and in the device equipment, various kinds of cutters which are inevitably needed, such as cutting cutters or hob cutters, are arranged, so that good excavating performance of the construction equipment in the operation process is ensured, and the construction process is ensured.
In the prior art, the cutter applied to tunnel construction equipment, in particular to a hob, has the characteristics of simple structure, large rock breaking amount and high rock breaking efficiency, is mainly used for breaking medium and hard rocks, and further ensures that the processing task is efficiently completed; the existing common hob adopts floating seal, has lower bearing capacity, can not balance the pressure change of the environment better when the pressure is larger, has limited bearing capacity, is not suitable for complex working condition environments such as high pressure, muddy water, sand dust and the like, influences the tunneling working process, and further needs to be added with a balancing device; meanwhile, aiming at the muddy water working condition, the sealing performance of the hob cutter is particularly important, if the inside of the cutter is permeated by muddy water, the cutter is easy to lose the crushing and tunneling functions, and the use functions are influenced, therefore, the unbalanced high-pressure-resistant shaft hob is reasonable in design, simple in structure, convenient to process, convenient to balance the environmental pressure change, improves the bearing capacity, increases the sealing reliability of the hob, ensures the use effect, and effectively meets the use requirements.
Disclosure of utility model
Aiming at the technical problems existing in the using process of the hob cutter, the utility model provides the unbalanced high-pressure-resistant shaft hob which has reasonable design, simple structure, convenient processing and convenient balance of environmental pressure change, improves the bearing capacity of the hob cutter, increases the reliability of hob sealing, ensures the using effect and effectively meets the using requirement.
In order to achieve the above purpose, the technical scheme adopted by the utility model is that the unbalanced high-pressure-resistant shaft hob comprises a hob body, wherein the hob body comprises a hob shaft, two tapered roller bearings, a hob body and a hob ring which are sequentially arranged from inside to outside, a bearing gasket is arranged between two adjacent tapered roller bearings, a positioning ring with a Z-shaped cross section is arranged on one side of the tapered roller bearing, a limiting plate is arranged on one side of the positioning ring close to the tapered roller bearing, an end cover with a Z-shaped cross section is arranged on the outer side of the positioning ring, a Griley ring is arranged in the lower end of the positioning ring contacted with the end cover, a plurality of annular plates with sequentially increased inner and outer diameters are arranged on one side of the positioning ring close to the end cover, an adaptive annular groove is formed in the end cover corresponding to the annular plate, a hole groove is formed in the hob shaft, and a balancing device for balancing environmental pressure change is arranged in the hole groove.
Preferably, the balancing device comprises a piston rod, a sliding groove is formed in one side of the piston rod, a sliding rod in a T-shaped design is arranged in the sliding groove, a C-shaped retaining ring is arranged in one end of the piston rod, a star-shaped ring is arranged on the periphery of the sliding rod, a supporting spring is sleeved on the periphery of one side of the sliding rod, a piston plug is arranged on one side of the supporting spring, and an elastic retainer ring is arranged on the outer side of the piston rod.
Preferably, the bearing washer is concave in design, a through hole is formed in the bearing washer, and a communication hole which is communicated with the through hole and the hole groove is formed in the geometric center of the cutter shaft.
Preferably, an overhanging plate propped against the end cover is arranged on the periphery of the cutter shaft on the left side, a locking nut is arranged on the periphery of the cutter shaft on the right side, and a backstop block is arranged on the outer side of the locking nut.
Compared with the prior art, the utility model has the advantages and positive effects that,
1. According to the unbalanced high-pressure-resistant shaft hob provided by the utility model, the sealing designed in a labyrinth way is adopted to a certain extent through the annular plate and the adaptive annular groove which are respectively arranged on the positioning ring and the end cover, and the rotary sealing is carried out by matching with the qualified race, so that the sealing reliability is improved; the balance device can balance the environmental pressure change to a certain extent, improves the bearing capacity of the cutter, is suitable for different complex working conditions, and greatly improves the use functionality; the device has reasonable design, simple structure, convenient processing and convenient balance of environmental pressure change, improves the pressure bearing capacity of the device, increases the sealing reliability of the hob, ensures the use effect and effectively meets the use requirement.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, 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 following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort to a person skilled in the art.
FIG. 1 is a side view of the structure of an unbalanced high pressure resistant shaft hob;
FIG. 2 is a schematic cross-sectional view of the structure at A-A in FIG. 1;
FIG. 3 is an enlarged schematic view of a portion of the structure at B in FIG. 2;
FIG. 4 is a schematic view of a positioning ring;
FIG. 5 is a schematic structural view of a cover plate;
In the above figures, 1, a cutter shaft; 1a, a hole groove; 1b, a communication hole; 1c, overhanging plates; 2. tapered roller bearings; 3. a cutter body; 4. a knife ring; 5. a bearing washer; 51. a through hole; 6. a positioning ring; 61. a limiting plate; 62. a ring plate; 7. an end cap; 71. the ring groove is adapted; 8. a Gelai circle; 9. a balancing device; 91. a piston rod; 911. a sliding groove; 92. a slide bar; 93. a C-shaped clasp ring; 94. a star-shaped ring; 95. a support spring; 96. a piston plug; 97. a circlip; 10. a lock nut; 11. and a stop block.
Detailed Description
In order that the above objects, features and advantages of the utility model will be more clearly understood, a further description of the utility model will be rendered by reference to the appended drawings and examples. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced otherwise than as described herein, and therefore the present utility model is not limited to the specific embodiments of the disclosure that follow.
1-5, An unbalanced high-pressure-resistant shaft hob comprises a hob body, wherein the hob body comprises a hob shaft 1, two tapered roller bearings 2, a cutter body 3 and a cutter ring 4 which are arranged side by side sequentially from inside to outside, a retainer ring is arranged at the joint of the cutter ring 4 and the cutter body 3, the possibility of deflection of the cutter ring 4 is reduced, the tunneling process is ensured, a bearing gasket 5 is arranged between two adjacent tapered roller bearings 2, and of course, the establishment of equipment parts of the devices is the prior art, and the device can be effectively known by a person skilled in the art, and is not repeated; one side of the tapered roller bearing 2 is provided with a positioning ring 6 with a Z-shaped cross section, so that the stability of the cutter body 3 is ensured, the use strength is improved, and in addition, of course, the outer side of the positioning ring 6 is also provided with an oil plug, thereby providing convenience for adding lubricating oil and ensuring the smoothness of the hob body in the running and use process; a limiting plate 61 is arranged on one side of the positioning ring 6 close to the tapered roller bearing 2 and is propped against the tapered roller bearing 2, so that the stability in the running and rotating process of the tapered roller bearing is ensured, and of course, an O-shaped ring is arranged at the joint of the limiting plate 61 and the cutter body 3, so that the sealing property and the friction property of the hob are further improved, and the use effect of the cutter is ensured; an end cover 7 with a Z-shaped cross section is arranged on the outer side of the positioning ring 6, a Gelai ring 8 is arranged in the lower end of the positioning ring 6 contacted with the end cover 7, a rotary sealing effect is provided for connection between equipment parts, the use functionality is guaranteed, a plurality of annular plates 62 with sequentially increasing inner and outer diameters are arranged on one side of the positioning ring 6 which is close to the end cover 7, an adaptation annular groove 71 is formed in the end cover 7 corresponding to the annular plates 62, and the adaptation annular groove 71 is similar to the labyrinth in opening, that is, the annular plates 62 and the adaptation annular groove 71 realize mutual insertion fit, so that the tightness of the fit between the equipment parts is effectively improved, the reliability of sealing is increased, and the use functionality is improved; the right cutter shaft 1 is internally provided with a hole groove 1a, a convenient installation position is provided for the establishment of the balancing device 9, and the balancing device 9 for balancing the change of the ambient pressure is arranged in the hole groove 1a, so that the change of the ambient pressure can be balanced to a certain extent, the bearing capacity of the cutter is improved, different complex working conditions are applicable, the use functionality is greatly improved, and the use requirement is met;
In the above process: the ring plate 62 and the adaptation ring groove 71 which are respectively arranged on the positioning ring 6 and the end cover 7 are used for sealing in a labyrinth design to a certain extent, and the qualified rice ring 8 is matched for rotary sealing, so that the reliability of the sealing is improved; the balance device 9 can balance the change of the environmental pressure to a certain extent, improve the bearing capacity of the cutter, adapt to different complex working conditions and greatly improve the use functionality; the device has reasonable design, simple structure, convenient processing and convenient balance of environmental pressure change, improves the pressure bearing capacity of the device, increases the sealing reliability of the hob, ensures the use effect and effectively meets the use requirement.
In order to ensure that the balancing device 9 has good service performance, the balancing device 9 comprises a piston rod 91, a sliding groove 911 is formed in one side of the piston rod 91, a sliding rod 92 which is in a T-shaped design is arranged in the sliding groove 911, a C-shaped retaining ring 93 is arranged in one end of the piston rod 91, a star-shaped ring 94 is arranged on the periphery of the sliding rod 92, a precondition is provided for the sliding rod 92 to slide reciprocally relative to the piston rod 91, a supporting spring 95 is sleeved on the periphery of one side of the sliding rod 92, a piston plug 96 is arranged on one side of the supporting spring 95, and a circlip 97 is arranged on the outer side of the piston rod 91, wherein the concrete working principle is as follows: when the hob is used for tunneling, the lubricating oil in the cutter can be thermally expanded, and the balancing device 9 consists of a sliding rod 92 and a spring, namely, when the cutter is heated and expanded, the sliding rod 92 moves rightwards, the spring is compressed by extrusion, the pressure is converted into mechanical energy to be stored, when the temperature in the cutter is reduced, the mechanical energy is released again, the increase of the internal pressure is avoided, the change of the environmental pressure can be effectively balanced, the structure is simple, the pressure bearing capacity is high, the device is suitable for complex working conditions such as high pressure, muddy water, sand dust and the like, and the use requirement is met.
In order to further enable the balancing device 9 to play a role in use, the bearing washer 5 is in a concave design, a through hole 51 is formed in the bearing washer, a communication hole 511b which is used for communicating the through hole 51 with the hole groove 1a is formed in the geometric center of the cutter shaft 1, and the design provides convenience for realizing pressure self-balancing for the cutter, effectively improves the use function of the hob cutter, further increases the bearing capacity of the hob cutter, and ensures the smooth development of tunneling work.
In order to improve the rationality of the design of the device and effectively increase the stability of the hob establishment, the periphery of the left cutter shaft 1 is provided with an overhanging plate 1c which is abutted against the end cover 7 and used for improving the stability of the placement of the left end cover 7 and preventing the possibility of deviation; further, a lock nut 10 is arranged on the periphery of the right cutter shaft 1, a retaining block 11 is arranged on the outer side of the lock nut 10, wherein the lock nut 10 provides convenience for each part to be stably arranged on the cutter shaft 1, and of course, external threads are arranged on the periphery of the cutter shaft 1 corresponding to the lock nut 10, so that the installation difficulty is reduced, and meanwhile, the periphery of the lock nut 10 can be respectively abutted against the inner sides of the cutter shaft 1 and the end cover 7 by utilizing the arranged retaining block 11, so that the limit of the lock nut 10 is completed, the possibility of deviation is reduced, and the use requirement is met.
The present utility model is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present utility model without departing from the technical content of the present utility model still belong to the protection scope of the technical solution of the present utility model.
Claims (4)
1. The utility model provides an unbalanced high pressure resistant shaft type hobbing cutter, includes the hobbing cutter body, the hobbing cutter body includes arbor, two tapered roller bearings, cutter body and the cutter ring that arrange side by side that set gradually from inside to outside, two adjacent tapered roller bearings are provided with the bearing washer between, its characterized in that, tapered roller bearing's one side is provided with the holding ring that transversal personally submits Z shape design, is close to tapered roller bearing's holding ring one side is provided with the limiting plate, the outside of holding ring is provided with transversal end cover that personally submits Z shape design, is provided with the gray ring in the holding ring lower extreme that contacts with the end cover, is provided with a plurality of ring plates that the internal diameter size is progressively increased in proper order on one side of the holding ring that is close to with the end cover, with the adaptation annular groove has been seted up in the end cover that corresponds to the ring plate, right side set up the hole inslot in the arbor, be provided with the balancing unit that is used for balancing environmental pressure changes.
2. The unbalanced high-pressure-resistant shaft hob according to claim 1, wherein the balancing device comprises a piston rod, a sliding groove is formed in one side of the piston rod, a sliding rod which is in a T-shaped design is arranged in the sliding groove, a C-shaped retaining ring is arranged in one end of the piston rod, a star-shaped ring is arranged on the periphery of the sliding rod, a supporting spring is sleeved on the periphery of one side of the sliding rod, a piston plug is arranged on one side of the supporting spring, and an elastic retainer ring is arranged on the outer side of the piston rod.
3. The unbalanced high pressure resistant shaft hob of claim 2, wherein the bearing washer is of concave design, and is internally provided with a through hole, and a communication hole for communicating the through hole with the hole groove is further formed in the geometric center of the arbor.
4. An unbalanced high pressure resistant shaft hob according to claim 3, characterized in that the outer circumference of the arbor on the left side is provided with an overhanging plate abutting against the end cover, the outer circumference of the arbor on the right side is provided with a lock nut, and the outer side of the lock nut is provided with a stop block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322646839.XU CN220890200U (en) | 2023-09-28 | 2023-09-28 | Unbalanced high-pressure-resistant shaft hob |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322646839.XU CN220890200U (en) | 2023-09-28 | 2023-09-28 | Unbalanced high-pressure-resistant shaft hob |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220890200U true CN220890200U (en) | 2024-05-03 |
Family
ID=90875426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322646839.XU Active CN220890200U (en) | 2023-09-28 | 2023-09-28 | Unbalanced high-pressure-resistant shaft hob |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220890200U (en) |
-
2023
- 2023-09-28 CN CN202322646839.XU patent/CN220890200U/en active Active
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