CN217002994U - Bearing clearance adjustable in-band locking device's leak protection oil gearbox - Google Patents
Bearing clearance adjustable in-band locking device's leak protection oil gearbox Download PDFInfo
- Publication number
- CN217002994U CN217002994U CN202220779596.XU CN202220779596U CN217002994U CN 217002994 U CN217002994 U CN 217002994U CN 202220779596 U CN202220779596 U CN 202220779596U CN 217002994 U CN217002994 U CN 217002994U
- Authority
- CN
- China
- Prior art keywords
- gearbox
- bearing
- bearing chamber
- sealing
- locking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- General Details Of Gearings (AREA)
Abstract
The utility model discloses an oil leakage prevention gearbox with an adjustable bearing clearance and an internal locking device, wherein a bearing chamber of a gearbox housing is of an internal thread structure, opposite locking grooves are axially formed in the internal thread structure, an adjusting cover is screwed on the thread structure of the bearing chamber of the gearbox housing, the inner end of the adjusting cover is tightly matched with a tapered roller bearing in the bearing chamber, even number of positioning grooves matched with the locking grooves are uniformly distributed in the outer end of the adjusting cover along the circumferential direction, locking strips are clamped in the positioning grooves of the adjusting cover, two ends of the locking strips are clamped in the locking grooves on the internal thread structure, a sealing cover is screwed on the thread structure of the bearing chamber of the gearbox housing, and the inner end of the adjusting cover is tightly matched with the locking strips and the outer end face of the adjusting cover. The utility model effectively solves the problems of overlarge assembly clearance or interference between the rotating shaft and the tapered roller bearing, meets the assembly process requirement, effectively prevents the axial movement of the rotating shaft and the tapered roller bearing, and solves the problems of noise, easy abrasion and the like of a transmission part in the box body.
Description
Technical Field
The utility model belongs to the technical field of gearboxes, and particularly relates to an oil leakage prevention gearbox with an adjustable bearing clearance and an internal locking device.
Background
At present, a box type speed reducing and increasing gear box is used as a main part of industrial rotation, so that a speed changing transmission device for reducing speed or increasing speed, increasing torque or reducing torque is realized, so that the internal motion quality of a box type speed reducing and increasing gear box determines the operation quality of the box type speed reducing and increasing gear box, and the positioning technology of a tapered roller bearing matched with a transmission shaft also becomes the key technology of the operation quality of the box type speed reducing and increasing gear box.
The existing locating technology of the tapered roller bearing of the box type speed reducing and increasing and other speed changing machines adopts a shaft head end cover direct locating technology to achieve the locating effect of a rotating part in a box body, the machining requirement on an end cover is strict, the machining difficulty of the end cover is increased, and the assembling precision of the end cover is influenced by the elasticity of a sealing gasket; and secondly, a positioning technology of the elastic retainer ring for the hole is adopted, and the assembly precision of the elastic retainer ring is influenced because a certain gap is formed in a retainer ring groove.
The existing box type speed-reducing and speed-increasing speed-changing machine has the advantages of speed change, torque force change and the like, so that the box type speed-reducing and speed-increasing speed-changing machine is widely applied to various industries, but two bad conditions exist at the same time, namely the problem and the defect:
1) loud noise
The national standard noise is 85 decibels, and the reason that the general speed changer exceeds standard is not beyond the overlarge and loose bearing clearance; the clearance between the transmission parts is too large; the processing precision can not be achieved; the main reasons of large noise caused by collision, abrasion and the like between transmission parts.
2) The driving part is easy to wear
The machining precision and the surface roughness can not be achieved, the radial run-out is too large, the assembly clearance interference and the like mainly cause the easy abrasion of the transmission part.
3) The assembly process is complicated
At least 6 bolts, even 8 or 10 bolts are needed for assembly, 12 bolts are needed for large-scale assembly, and the end cover is pressed and sealed; according to the current bolt assembly process, bolts need to be fastened diagonally, and the bolts need to be fastened at least 3 times and 18 times at least according to the minimum number of 6 bolts, so that the requirements of the bolt assembly process can be met.
4) Waste time and labor
Because of the complexity of the traditional bolt assembly process, a large amount of manpower is required to be invested, and a large amount of working time is consumed, the requirement of the bolt assembly process can be met, and the production cost is increased.
With respect to the above problems at present, it is not difficult to find out that the cause of the problems is summarized into two aspects: one aspect is machining and one aspect is assembly. It can be seen that the assembly is important for the transmission quality of box type speed-reducing and speed-increasing variable-speed machine, and the positioning technology of the tapered roller bearing determines the important factor of the transmission quality. The key of the tapered roller bearing positioning technology lies in whether the tapered roller bearing is adjustable or not and whether the tapered roller bearing is anti-loosening or not during use and operation, so that the quality requirement and the continuous and stable working state are achieved.
In addition, in the prior art of box body type speed-reducing and speed-increasing gear box lubricating oil sealing and leakage prevention, firstly, a sealing technology of a shaft head end cover, a sealing ring and a bolt locking is adopted to achieve the effect of sealing and storing the lubricating oil in the gear box body, the requirement on bolt locking force balance is strict when the bolt is locked, the difficulty of end cover machining is increased, and the sealing effect is influenced; secondly, adopt hole circlip + sealing washer sealing technique, because of sealing washer interference fit, the magnitude of interference can't be too big, and too big leads to the sealing washer damaged easily, and the magnitude of interference can not be too little again, and too little sealed effect is not good, because of venthole (or exhaust hole) jam again, lubricating oil can release the sealing washer because of the pressure that driving medium frictional heating rises in the gearbox box, thereby lubricating oil leaks and influences sealed effect.
The lubricating oil sealing mode is not good, so that the lubricating oil leaks, and the lubricating, auxiliary cooling, rust prevention, cleaning, sealing, buffering and other functions of the lubricating oil cannot be realized. The key of the lubricating oil seal is whether to seal, leak or not and whether to have a defect, so that the quality requirement and the continuous and stable working state are achieved. Therefore, there is a need for an improved transmission lubricating oil seal structure to effectively solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model solves the technical problem of providing the oil-leakage-proof gearbox with the adjustable bearing clearance and the internal locking device, which has reasonable structural design, convenient disassembly, assembly and maintenance and stable working state.
The utility model adopts the following technical scheme for solving the technical problems, the oil-leakage-proof gearbox with the adjustable bearing clearance and the internal locking device comprises a gearbox housing bearing chamber, a transmission shaft and a tapered roller bearing which are arranged in the gearbox housing bearing chamber, and a sealing cover which is arranged on the gearbox housing bearing chamber, and is characterized in that: the bearing chamber of the gearbox housing is of an internal thread structure, the internal thread structure is axially provided with oppositely arranged locking grooves, the adjusting cover is screwed on the thread structure of the bearing chamber of the gearbox housing, the inner end of the adjusting cover is tightly matched with the tapered roller bearing in the bearing chamber in a propping manner and is used for realizing the axial positioning of the tapered roller bearing, the outer end of the adjusting cover is uniformly distributed with even number of positioning grooves matched with the locking grooves along the circumferential direction, the locking strip is clamped in the positioning grooves of the adjusting cover, the two ends of the locking strip are clamped in the locking grooves on the internal thread structure and are used for realizing the positioning and locking of the adjusting cover, the sealing cover is screwed on the thread structure of the bearing chamber of the gearbox housing, the inner end of the adjusting cover is tightly matched with the locking strip and the outer end face of the adjusting cover in a propping manner and is used for realizing the pressing and positioning of the locking strip, and the sealing cover is of an external thread structure matched with the thread structure in the bearing chamber of the gearbox housing, the end part of the sealing cover and the end face press-fit part of the bearing chamber of the gearbox casing are provided with an outward flanging groove opposite to the axial end face of the bearing chamber of the gearbox casing, a sealing ring is arranged in the outward flanging groove, and the sealing cover is in threaded connection with the bearing chamber of the gearbox casing and tightly presses the sealing ring through the end face of the sealing cover to realize the sealing and leakage prevention of lubricating oil in the bearing chamber of the gearbox casing.
Further inject, sealed lid is the sealed tube body structure of one end, is equipped with the external screw thread that matches with the indoor screw thread of gearbox box bearing on the lateral wall of this barrel, and the barrel through the external screw thread and the internal thread spiro union that match on gearbox box bearing room, the open end of barrel is equipped with the relative flanging groove of gearbox box bearing room axial terminal surface, is equipped with the sealed sealing washer of realizing sealed lid and gearbox box bearing room sealed in this flanging groove.
Further limiting, the flanging groove is of an arc-shaped groove structure, and the depth of the arc-shaped groove is between the radius of the sealing ring and the diameter of the sealing ring.
The depth of the arc-shaped groove is h, the diameter of the sealing ring is d, h is more than or equal to 0.6d and less than or equal to 0.8d, and the arc-shaped groove is used for favorably realizing the compression deformation of the sealing ring and better fitting and sealing with the axial end surface of the bearing chamber of the gearbox casing and the flanging groove of the sealing cover after the compression deformation of the sealing ring.
Further limited, the outer end of the adjusting cover is uniformly distributed with 4 or 6 positioning grooves matched with the locking grooves along the circumferential direction.
Compared with the prior art, the utility model has the following advantages and beneficial effects: the utility model adopts the threads and the locking grooves in the bearing chamber, the external threads of the adjusting block and the positioning groove, and realizes fine adjustment through the adjusting block, thereby solving the problem of overlarge assembly clearance or interference and ensuring the requirements of the assembly process; then, a locking strip is adopted for locking, so that the problem of looseness during operation is solved, and the continuous and stable working state is ensured; the product is convenient and quick to maintain and disassemble during assembly and use, and time and labor are saved; the production cost is reduced. Meanwhile, the oil leakage prevention device adopts a structure that the inner threads of the bearing chamber, the sealing ring and the outer threads of the sealing cover are locked, and the sealing ring is pressed tightly by the end face, so that the problem of lubricating oil leakage is solved, the standard oil quantity of the lubricating oil in the box body is ensured, the conditions of collision and abrasion during operation are solved, the effects of lubrication, auxiliary cooling, rust prevention, cleaning, sealing, buffering and the like are realized, and the continuous and stable working state is ensured; the installation, the maintenance and the disassembly are convenient and quick, and time and labor are saved; the production cost is reduced.
Drawings
FIG. 1 is a schematic view of the assembled structure of the present invention;
FIG. 2 is a schematic view of a half-section axial structure of the present invention;
FIG. 3 is a partial cross-sectional structural schematic of the present invention;
FIG. 4 is a schematic view of the assembly structure of the sealing cover and the bearing housing of the transmission case in the present invention.
In the figure: 1-a gearbox housing bearing chamber, 2-a tapered roller bearing, 3-an adjusting cover, 4-a locking strip, 5-a sealing cover and 6-a sealing ring.
Detailed Description
The technical scheme of the utility model is described in detail by combining the attached drawings, the tapered roller bearing clearance adjusting and locking device comprises a gearbox housing bearing chamber 1, a transmission shaft and a tapered roller bearing which are arranged in the gearbox housing bearing chamber 1, and a sealing cover 5 which is arranged on the gearbox housing bearing chamber 1, wherein the gearbox housing bearing chamber 1 is of an internal thread structure, locking grooves which are oppositely arranged are axially arranged on the internal thread structure, an adjusting cover 3 is screwed on the thread structure of the gearbox housing bearing chamber 1, the inner end of the adjusting cover 3 is tightly matched with the tapered roller bearing in the bearing chamber in a propping manner and is used for realizing the axial positioning of the tapered roller bearing, the outer end of the adjusting cover 3 is uniformly distributed with an even number of positioning grooves which are matched with the locking grooves along the circumferential direction, a locking strip 4 is clamped in the positioning groove of the adjusting cover 3, and two ends of the locking strip 4 are clamped in the locking grooves on the internal thread structure, the sealing device is used for realizing positioning and locking of the adjusting cover 3, the sealing cover 5 is in threaded connection with a threaded structure of the gearbox housing bearing chamber 1, the inner end of the sealing cover 5 is tightly matched with the locking strip 4 and the outer end face of the adjusting cover 3 in a propping mode, the sealing cover 5 is in an external thread structure matched with an internal thread structure of the gearbox housing bearing chamber 1, a flanging groove opposite to the axial end face of the gearbox housing bearing chamber 1 is formed in the end face press-fit position of the sealing cover 5 and the end face of the gearbox housing bearing chamber 1, a sealing ring 6 is arranged in the flanging groove, and the sealing cover 5 is in threaded connection with the gearbox housing bearing chamber 1 and tightly presses the sealing ring 6 through the end face of the sealing cover 5 to realize sealing and leakage prevention of lubricating oil in the gearbox housing bearing chamber 1.
The sealing cover 5 is of a cylinder structure with one sealed end, the outer side wall of the cylinder is provided with external threads matched with internal threads of a bearing chamber 1 of a gearbox box body, the cylinder is screwed on the bearing chamber 1 of the gearbox box body through the matched external threads and internal threads, the open end of the cylinder is provided with a flanging groove opposite to the axial end face of the bearing chamber 1 of the gearbox box body, and a sealing ring 6 for sealing the sealing cover 5 and the bearing chamber 1 of the gearbox box body is arranged in the flanging groove.
The flanging groove is of an arc groove structure, and the depth of the arc groove is between the radius of the sealing ring and the diameter of the sealing ring.
The depth of the arc-shaped groove is h, the diameter of the sealing ring is d, h is more than or equal to 0.6d and less than or equal to 0.8d, and the sealing ring is used for favorably realizing the compression deformation of the sealing ring and better fitting and sealing with the axial end surface of the bearing chamber of the gearbox housing and the flanging groove of the sealing cover after the compression deformation of the sealing ring.
The outer end of the adjusting cover 3 is uniformly distributed with 4 or 6 positioning grooves matched with the locking grooves along the circumferential direction.
The working principle of the utility model is as follows: the adjusting cover is screwed in the bearing chamber of the gearbox housing and adjusted to a required position, so that the positioning groove on the adjusting cover is aligned with the locking groove on the bearing chamber of the gearbox housing, and then the locking strip wedge is embedded into the positioning groove of the adjusting cover and the locking groove of the bearing chamber of the gearbox housing, thereby achieving the purposes of fine adjustment of the axial position of the tapered roller bearing and looseness prevention.
1. The utility model relates to a transmission case bearing chamber inner thread processing device, which realizes the fine adjustment function to the spiral adjustment structure of a tapered roller bearing; 2. the external thread of the adjusting cover is processed and is spirally adjusted with the internal thread of the bearing chamber of the gearbox body to realize the micro-elutriation function; 3. a bearing chamber of a gearbox body is provided with a locking groove for adjusting a cover to realize a locking structure so as to achieve the purpose of looseness prevention; 4. the adjusting cover is provided with a positioning groove which is used for forming a locking structure with a bearing chamber of a gearbox housing and has the function of preventing looseness; 5. the fine adjustment of the adjusting cover meets the requirements of the assembly process, the fine adjustment adjusting cover is rotated to align the positioning groove at the outer end of the adjusting cover with the locking groove of the bearing chamber of the gearbox housing, the locking strip wedge is embedded into the locking structure of the locking groove,
the utility model adopts the functional structure of locking of the inner threads and the locking grooves of the bearing chamber of the gearbox body, the outer threads and the locking grooves of the adjusting cover and the locking strips, effectively solves the problems of overlarge assembly clearance or interference between the rotating shaft and the tapered roller bearing, meets the requirements of the assembly process, effectively prevents the axial movement of the rotating shaft and the tapered roller bearing, solves the quality problems of noise, easy abrasion and the like of a transmission part in the gearbox body, and ensures that the working state is continuous and stable; the installation, the maintenance and the disassembly are convenient and quick, and time and labor are saved; the production cost is reduced. The positioning technology of the tapered roller bearing which is different from the prior box type speed reducing and increasing and other speed changing machines adopts the technology of direct positioning of a shaft head end cover and positioning of a hole elastic check ring, thereby achieving the aim of the utility model. Meanwhile, the overall structure design of the bearing chamber inner thread of the gearbox body, the sealing cover outer thread, the sealing cover end face sealing ring groove and the sealing ring is as follows: the sealing ring is arranged in the flanging groove of the sealing cover to be rotationally arranged on the bearing chamber of the gearbox casing and locked, so that the sealing ring is pressed to deform and is better attached and sealed with the axial end surface of the bearing chamber of the gearbox casing and the flanging groove of the sealing cover after being pressed to deform, the purpose of preventing the lubricating oil in the bearing chamber of the gearbox casing from leaking outside is achieved, and the function of preventing the lubricating oil in the bearing chamber of the gearbox casing from leaking outside in a sealing manner is achieved.
While there have been shown and described what are at present considered the fundamental principles of the utility model, its essential features and advantages, the utility model further resides in various changes and modifications which fall within the scope of the utility model as claimed.
Claims (5)
1. The utility model provides an adjustable in-band locking means's of bearing clearance leak protection oil gearbox, includes gearbox housing bearing room, sets up in the transmission shaft and the tapered roller bearing of gearbox housing bearing indoor portion and installs the sealed lid on gearbox housing bearing room, its characterized in that: the bearing chamber of the gearbox housing is of an internal thread structure, the internal thread structure is axially provided with oppositely arranged locking grooves, the adjusting cover is screwed on the thread structure of the bearing chamber of the gearbox housing, the inner end of the adjusting cover is tightly matched with the tapered roller bearing in the bearing chamber in a propping manner and is used for realizing the axial positioning of the tapered roller bearing, the outer end of the adjusting cover is uniformly distributed with even number of positioning grooves matched with the locking grooves along the circumferential direction, the locking strip is clamped in the positioning grooves of the adjusting cover, the two ends of the locking strip are clamped in the locking grooves on the internal thread structure and are used for realizing the positioning and locking of the adjusting cover, the sealing cover is screwed on the thread structure of the bearing chamber of the gearbox housing, the inner end of the adjusting cover is tightly matched with the locking strip and the outer end face of the adjusting cover in a propping manner and is used for realizing the pressing and positioning of the locking strip, and the sealing cover is of an external thread structure matched with the thread structure in the bearing chamber of the gearbox housing, the end part of the sealing cover and the end face press-fit part of the bearing chamber of the gearbox casing are provided with an outward flanging groove opposite to the axial end face of the bearing chamber of the gearbox casing, a sealing ring is arranged in the outward flanging groove, and the sealing cover is in threaded connection with the bearing chamber of the gearbox casing and tightly presses the sealing ring through the end face of the sealing cover to realize the sealing and leakage prevention of lubricating oil in the bearing chamber of the gearbox casing.
2. The oil-leakage-proof gearbox with the adjustable bearing clearance and the inner locking device as claimed in claim 1, is characterized in that: the sealing cover is of a cylinder structure with one sealed end, external threads matched with the threads in the bearing chamber of the gearbox box body are arranged on the outer side wall of the cylinder, the cylinder is connected onto the bearing chamber of the gearbox box body in a threaded mode through the matched external threads and internal threads, a flanging groove opposite to the axial end face of the bearing chamber of the gearbox box body is arranged at the opening end of the cylinder, and a sealing ring for sealing the sealing cover and the bearing chamber of the gearbox box body in a sealing mode is arranged in the flanging groove.
3. The oil-leakage-proof gearbox with the bearing clearance adjustable and the inner locking device as claimed in claim 2, is characterized in that: the flanging groove is of an arc groove structure, and the depth of the arc groove is between the radius of the sealing ring and the diameter of the sealing ring.
4. The oil-leakage-proof gearbox with the adjustable bearing clearance and the inner locking device as claimed in claim 3, is characterized in that: the depth of the arc-shaped groove is h, the diameter of the sealing ring is d, h is more than or equal to 0.6d and less than or equal to 0.8d, and the arc-shaped groove is used for favorably realizing the pressing deformation of the sealing ring and better fitting and sealing with the axial end face of a bearing chamber of a gearbox housing and the flanging groove of the sealing cover after the pressing deformation of the sealing ring.
5. The oil-leakage-proof gearbox with the bearing clearance adjustable and the inner locking device as claimed in claim 1, is characterized in that: the outer end of the adjusting cover is evenly distributed with 4 or 6 positioning grooves matched with the locking grooves along the circumferential direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220779596.XU CN217002994U (en) | 2022-04-06 | 2022-04-06 | Bearing clearance adjustable in-band locking device's leak protection oil gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220779596.XU CN217002994U (en) | 2022-04-06 | 2022-04-06 | Bearing clearance adjustable in-band locking device's leak protection oil gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217002994U true CN217002994U (en) | 2022-07-19 |
Family
ID=82375562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220779596.XU Active CN217002994U (en) | 2022-04-06 | 2022-04-06 | Bearing clearance adjustable in-band locking device's leak protection oil gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217002994U (en) |
-
2022
- 2022-04-06 CN CN202220779596.XU patent/CN217002994U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202790344U (en) | Vertical type cycloidal pin gear speed reducer | |
| US20220275836A1 (en) | Fixing structure for auxiliary bearing of electric drive assembly and electric drive assembly | |
| CN217002994U (en) | Bearing clearance adjustable in-band locking device's leak protection oil gearbox | |
| CN111075909A (en) | Through-shaft power output shaft gear box and machine for mounting through-shaft power output shaft gear box | |
| CN102797763A (en) | Novel hydraulic expansion sleeve | |
| CN209688039U (en) | A kind of hypoid gear speed reducer of adjustable clearance | |
| CN217002993U (en) | Tapered roller bearing clearance adjustment locking means | |
| CN100473830C (en) | Combination assembly for managing a hose or like elastic pump tube in a positive displacement pump | |
| CN107917180B (en) | Transmission case for diesel locomotive | |
| CN217003015U (en) | Gearbox with oil seepage prevention device | |
| CN115854006A (en) | Oil-water bidirectional sealing device for marine gearbox | |
| CN211474821U (en) | Through-shaft power output shaft gear box and machine for mounting through-shaft power output shaft gear box | |
| CN202065466U (en) | Combined sealing ring structure lubricated by grease | |
| CN201198830Y (en) | Oil pump for gear box | |
| CN209494845U (en) | Large-scale automobile-used self-aligning roller bearing | |
| CN204827787U (en) | Hydraulic motor of low noise | |
| CN217539349U (en) | Anti-deformation tapered roller bearing | |
| CN2331773Y (en) | Inner gearing type engine-oil pump | |
| CN215673194U (en) | Anti-biting low-noise oil-free lubrication shaft sleeve | |
| CN211924747U (en) | Integrated sealing structure | |
| CN218935181U (en) | Ball screw capable of preventing lubricating oil from leaking | |
| CN221436365U (en) | Engine combination oil seal installation tool | |
| CN217898739U (en) | Lubricating device for axial limiting mechanism of rotating shaft | |
| CN211778600U (en) | Hydraulic transmission joint structure | |
| CN211231527U (en) | Mechanical reduction gearbox lubricating oil combination sealing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |