CN211472661U - Milling and digging head structure - Google Patents
Milling and digging head structure Download PDFInfo
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- CN211472661U CN211472661U CN201922305614.1U CN201922305614U CN211472661U CN 211472661 U CN211472661 U CN 211472661U CN 201922305614 U CN201922305614 U CN 201922305614U CN 211472661 U CN211472661 U CN 211472661U
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Abstract
The utility model discloses a mill first structure of digging belongs to engineering machine tool equipment, and this structure includes transmission chamber, bearing chamber, mills and digs axle and spline etc.. The utility model provides a mill first structure of digging has adopted novel bearing chamber design, has arranged six rows of location bearings on milling the transmission route of digging the axle, compares with the technical scheme of traditional suspension location, has bigger bearing capacity, can effectively reduce to mill and dig beating and collision between axle and the casing, increases and mills the life of digging first structure.
Description
Technical Field
The utility model relates to the technical field of machinery, specifically be a milling and digging head structure.
Background
The milling and excavating machine is an engineering machine and can be widely applied to excavation of tunnels, ditches and municipal pipelines; crushing road surfaces, mining and excavating rock frozen soil; the method belongs to the construction fields of opencast coal mine excavation, surface innovation, steel industry, forestry and the like. Milling and excavating machines are of two basic types: a transverse milling and excavating machine and a longitudinal milling and excavating machine. The milling and digging head of the existing milling and digging machine mostly adopts a floating positioning scheme, as shown in figure 1, a transmission shaft and a transmission gear of the milling and digging head are not provided with positioning bearings, and are directly installed through the milling and digging hub positioning bearings on two sides.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a mill first structure of digging possesses advantages such as fault rate is low, long service life, should mill first structure of digging and adopted novel bearing chamber design, has arranged six rows of positioning bearing on milling the transmission route of digging the axle, compares with the technical scheme of traditional suspension location, has bigger bearing capacity, can effectively reduce to mill and dig beating and the collision between axle and the casing, increases and mills the life of first structure of digging.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a mill first structure of digging includes transmission chamber, bearing chamber, mills and digs axle and spline, wherein: the transmission cavity comprises a primary gear shaft, a transmission bearing sleeved on the primary gear shaft and a primary transmission gear arranged on the transmission bearing, the primary gear shaft is limited by a shaft cover, and the shaft cover is arranged on the side wall of the transmission cavity through a fixing screw; the bearing cavity is arranged at the lower part of the transmission cavity through a connecting piece, and a secondary transmission gear, a secondary gear shaft, a secondary bearing and a milling and digging bearing are arranged in the bearing cavity, wherein the secondary transmission gear is matched with the primary transmission gear to work, the secondary gear shaft is used for installing the secondary transmission gear, the secondary bearing is used for installing the secondary gear shaft, and the milling and digging bearing is used for installing the milling and digging shaft; the milling and digging shaft is connected with the secondary gear shaft through a spline.
Preferably, the milling and digging shaft is divided into a left milling and digging shaft and a right milling and digging shaft which are symmetrically arranged, the left milling and digging shaft is positioned and installed through two milling and digging bearings, and the right milling and digging shaft is positioned and installed through two milling and digging bearings.
Preferably, the milling and excavating device further comprises a locking nut for fixing the milling and excavating bearing.
Preferably, the secondary bearing comprises a left secondary bearing and a right secondary bearing, and the left secondary bearing and the right secondary bearing are used for positioning the secondary transmission gear.
Preferably, the outer end of the milling and digging shaft is a square shaft, a connecting hole for installing the milling and digging hub is formed in the square shaft, and the inner end of the milling and digging shaft is a connecting shaft and is used for installing a spline.
Preferably, the bottom of the bearing cavity is provided with a bottom cover through a mounting screw, and the bottom cover is used for cleaning and detecting.
Preferably, the milling shaft further comprises a framework oil seal used for sealing the milling shaft and the bearing cavity, and the framework oil seal is arranged between the end face of the bearing cavity and a sealing cover of the milling shaft.
Preferably, the transmission cavity further comprises a power input shaft connected with the hydraulic motor and a power gear sleeved on the power input shaft, and the power gear and the first-stage transmission gear work in a matched mode.
Compared with the prior art, the beneficial effects of the utility model are as follows:
1. the utility model discloses a mill and dig and be provided with six rows of bearings on the power transmission route of axle, install and spacing through the multiunit bearing, can increase on the one hand and mill and dig bearing capacity, on the other hand can promote to mill and dig the job stabilization nature of axle.
2. The utility model provides a mill and dig the axle and pass through spline connection gear shaft for overall structure one end, the other end can the lug connection mill dig the hub and mill and dig the tooth, and this kind of integral milling digs the axle design and can further promote structural strength, is fit for complicated operational environment.
3. The utility model provides a bottom of bearing chamber is provided with dismantled and assembled bottom, can promote the convenience when overhauing and changing fluid, makes things convenient for the blowdown simultaneously.
Drawings
FIG. 1 is a milling and excavating head structure of a prior art floating mount arrangement;
FIG. 2 is a schematic structural view of the structure of the present invention;
FIG. 3 is an enlarged view of the middle frame oil seal of the present invention;
fig. 4 is an enlarged view of the locking nut of the present invention.
In the figure: 1-transmission cavity, 101-primary gear shaft, 102-shaft cover, 103-fixing screw, 104-transmission bearing, 105-primary transmission gear, 106-connecting piece, 2-bearing cavity, 201-secondary transmission gear, 202-secondary gear shaft, 203-secondary bearing, 204-milling and digging bearing, 205-locking nut, 206-bottom cover, 207-mounting screw, 3-milling and digging shaft, 301-square shaft, 302-connecting shaft, 303-connecting hole, 304-sealing cover, 4-spline and 5-framework oil seal.
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 creative work belong to the protection scope of the present invention.
As shown in fig. 2, fig. 3 and fig. 4, a milling and digging head structure includes a transmission cavity 1, a bearing cavity 2, a milling and digging shaft 3 and a spline 4, one end of the transmission cavity 1 is connected with a hydraulic motor, the other end of the transmission cavity 1 is connected with the bearing cavity 2, and the bearing cavity 2 is internally provided with a plurality of groups of bearings and is used for installing the milling and digging shaft 3. Specifically, the upper portion of the transmission cavity 1 is provided with a power input shaft (not shown in the drawing) for connecting the hydraulic motor and a power gear (not shown in the drawing) sleeved on the power input shaft, and the power gear can be in transmission with a gear inside the transmission cavity 1 in a matching manner.
Specifically, the transmission cavity 1 comprises a primary gear shaft 101, a transmission bearing 104 sleeved on the primary gear shaft 101, and a primary transmission gear 105 installed on the transmission bearing 104, the primary gear shaft 101 is limited by a shaft cover 102, the shaft cover 102 is installed on the side wall of the transmission cavity 1 through a fixing screw 103, and the top of the primary gear shaft 101 is meshed with the power gear.
Specifically, the bearing cavity 2 is installed at the lower part of the transmission cavity 1 through the connecting piece 106, and a secondary transmission gear 201, a secondary gear shaft 202, a secondary bearing 203 and a milling and digging bearing 204 are arranged in the bearing cavity 2, wherein the secondary transmission gear 201 is matched with the primary transmission gear 105 to work, the secondary gear shaft 202 is used for installing the secondary transmission gear 201, the secondary bearing 203 is used for installing the secondary gear shaft 202, and the milling and digging bearing 204 is used for installing the milling and digging; the upper part of the secondary transmission gear 201 is meshed with the primary gear shaft 101, the bottom of the bearing cavity 2 is provided with a bottom cover 206 through a mounting screw 207, and the bottom cover 206 is used for cleaning and detecting.
Specifically, the milling shaft 3 is divided into a left milling shaft and a right milling shaft which are symmetrically arranged, the left milling shaft is positioned and installed through two milling bearings 204, the right milling shaft is positioned and installed through two milling bearings 204, and the left milling shaft and the right milling shaft are respectively connected with a second-stage gear shaft 202 through splines 4.
It should be noted that the outer end of the milling shaft 3 is a square shaft 301, a connection hole 303 for installing the milling hub is formed in the square shaft 301, and the inner end of the milling shaft 3 is a connection shaft 302 for installing the spline 4. The secondary bearing 203 includes a left secondary bearing and a right secondary bearing, both of which are used for positioning the secondary transmission gear 201.
In fig. 3 and 4, a lock nut 205 for fixing the milling and excavating bearing 204 and a framework oil seal 5 for sealing the milling and excavating shaft 3 and the bearing cavity 2 are further included, and the framework oil seal 5 is arranged between the end surface of the bearing cavity 2 and a sealing cover 304 of the milling and excavating shaft 3.
When the hydraulic motor works, power output by the hydraulic motor is transmitted to the power gear, the first-stage transmission gear and the second-stage transmission gear in sequence, and the second-stage gear shaft is fixedly connected with the second-stage gear shaft, so that the milling and digging shaft 3 is further driven by a spline to move, and the milling and digging hub and the milling and digging teeth are arranged on the milling and digging shaft 3. The utility model discloses be provided with six rows of bearings on milling the power transmission route of digging the axle, install and spacing through the multiunit bearing, can increase on the one hand and mill and dig bearing capacity, on the other hand can promote to mill and dig the job stabilization nature of axle.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a mill first structure of digging, its characterized in that includes transmission chamber (1), bearing chamber (2), mills and digs axle (3) and spline (4), wherein:
the transmission cavity (1) comprises a primary gear shaft (101), a transmission bearing (104) sleeved on the primary gear shaft (101) and a primary transmission gear (105) arranged on the transmission bearing (104), the primary gear shaft (101) is limited by a shaft cover (102), and the shaft cover (102) is arranged on the side wall of the transmission cavity (1) through a fixing screw (103);
the bearing cavity (2) is arranged at the lower part of the transmission cavity (1) through a connecting piece (106), and a secondary transmission gear (201) which is matched with the primary transmission gear (105) to work, a secondary gear shaft (202) for installing the secondary transmission gear (201), a secondary bearing (203) for installing the secondary gear shaft (202) and a milling and digging bearing (204) for installing the milling and digging shaft (3) are arranged in the bearing cavity (2);
the milling and digging shaft (3) is connected with the secondary gear shaft (202) through a spline (4).
2. The milling and excavating head structure according to claim 1, characterized in that the milling and excavating shaft (3) is divided into a left milling and excavating shaft and a right milling and excavating shaft which are symmetrically arranged, the left milling and excavating shaft is positioned and installed by two milling and excavating bearings (204), and the right milling and excavating shaft is positioned and installed by two milling and excavating bearings (204).
3. The milling cutter head structure according to claim 1, characterized in that it further comprises a locking nut (205) for securing the milling cutter bearing (204).
4. The milling cutter head structure as claimed in claim 1, wherein the secondary bearing (203) comprises a left secondary bearing and a right secondary bearing, both for positioning the secondary drive gear (201).
5. The milling and excavating head structure according to claim 1, characterized in that the outer end of the milling and excavating shaft (3) is a square shaft (301), a connecting hole (303) for installing a milling and excavating hub is formed in the square shaft (301), and the inner end of the milling and excavating shaft (3) is a connecting shaft (302) and is used for installing a spline (4).
6. The milling cutter head structure as claimed in claim 1, characterized in that the bottom of the bearing chamber (2) is provided with a bottom cover (206) by means of mounting screws (207), the bottom cover (206) being used for cleaning and inspection.
7. The milling and excavating head structure according to claim 1, further comprising a skeleton oil seal (5) for sealing the milling and excavating shaft (3) and the bearing cavity (2), wherein the skeleton oil seal (5) is arranged between the end surface of the bearing cavity (2) and the sealing cover (304) of the milling and excavating shaft (3).
8. The milling cutter structure as claimed in claim 1, wherein the transmission chamber (1) further comprises a power input shaft for connecting a hydraulic motor and a power gear sleeved on the power input shaft, and the power gear cooperates with the primary transmission gear (105).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922305614.1U CN211472661U (en) | 2019-12-20 | 2019-12-20 | Milling and digging head structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922305614.1U CN211472661U (en) | 2019-12-20 | 2019-12-20 | Milling and digging head structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211472661U true CN211472661U (en) | 2020-09-11 |
Family
ID=72373777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922305614.1U Active CN211472661U (en) | 2019-12-20 | 2019-12-20 | Milling and digging head structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211472661U (en) |
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2019
- 2019-12-20 CN CN201922305614.1U patent/CN211472661U/en active Active
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