CN217002993U - Tapered roller bearing clearance adjustment locking means - Google Patents
Tapered roller bearing clearance adjustment locking means Download PDFInfo
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- CN217002993U CN217002993U CN202220779586.6U CN202220779586U CN217002993U CN 217002993 U CN217002993 U CN 217002993U CN 202220779586 U CN202220779586 U CN 202220779586U CN 217002993 U CN217002993 U CN 217002993U
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- locking
- tapered roller
- roller bearing
- thread structure
- adjusting cover
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Abstract
The utility model discloses a clearance adjustment locking device for a tapered roller bearing, wherein a bearing chamber of a gearbox box body is of an internal thread structure, opposite locking grooves are axially formed in the internal thread structure, an adjustment cover is screwed on the thread structure of the bearing chamber of the gearbox box body, the inner end of the adjustment cover is tightly matched with the tapered roller bearing in the bearing chamber, even number of positioning grooves matched with the locking grooves are uniformly distributed at the outer end of the adjustment cover along the circumferential direction, locking strips are clamped in the positioning grooves of the adjustment 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 box body, and the inner end of the adjustment cover is tightly matched with the locking strips and the outer end face of the adjustment cover. The utility model effectively solves the problems of overlarge assembling clearance or interference between the rotating shaft and the tapered roller bearing, meets the assembling process requirement, effectively prevents the axial movement of the rotating shaft and the tapered roller bearing, and solves the quality 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 gearbox bearing locking devices, and particularly relates to a tapered roller bearing gap adjusting and locking device.
Background
At present, a gearbox such as 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, therefore, the internal motion quality of a gearbox case such as a box type speed reducing and increasing gear box determines the operation quality of the gearbox case, and a tapered roller bearing positioning technology matched with a transmission shaft also becomes a key technology of the operation quality of the gearbox case such as a 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, as shown in figure 1, the machining requirement on an end cover is strict, the machining difficulty of the end cover is increased, and the assembly precision of the end cover is influenced by the elasticity of a sealing gasket; secondly, a positioning technology of the circlip for the hole is adopted, and the assembly precision is influenced because a certain gap is formed in a groove of the circlip, as shown in figure 2.
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 overlarge; 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
Assembling at least 6 bolts, even 8 or 10 bolts, and pressing and sealing the end cover by using 12 large bolts; according to the current bolt assembly process, bolts need to be fastened diagonally, and the bolt assembly process can be achieved at least 3 times and 18 times by fastening 6 bolts at least.
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 regard 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.
Disclosure of Invention
The utility model solves the technical problem of providing a tapered roller bearing clearance adjusting and locking device which has reasonable structural design, is convenient to disassemble, assemble and maintain and has stable working state.
The utility model adopts the following technical scheme for solving the technical problems, and the tapered roller bearing gap adjusting and 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 gearbox housing bearing chamber is of an internal thread structure, a locking groove which is arranged oppositely is axially formed in the internal thread structure, the adjusting cover is screwed on the thread structure of the gearbox housing bearing chamber, the inner end of the adjusting cover is tightly matched with the tapered roller bearing in the bearing chamber in a propping mode and is used for achieving axial positioning of the tapered roller bearing, an even number of positioning grooves which are matched with the locking groove are uniformly distributed in the outer end of the adjusting cover along the circumferential direction, the locking strip is clamped in the positioning grooves of the adjusting cover, two ends of the locking strip are clamped in the locking groove in the internal thread structure and used for achieving positioning and locking of the adjusting cover, the sealing cover is screwed on the thread structure of the gearbox housing bearing chamber, 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 mode and is used for achieving pressing and positioning of the locking strip.
Further limit, 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.
Drawings
FIG. 1 is a schematic view of a tapered roller bearing positioning structure of a prior art case type speed-reducing and speed-increasing transmission;
FIG. 2 is a schematic view of a tapered roller bearing positioning structure of a prior art case-type speed-reducing and-increasing transmission;
FIG. 3 is a schematic view of the assembled structure of the present invention;
FIG. 4 is a schematic view of a half-section axial structure of the present invention;
fig. 5 is a partial cross-sectional structural schematic view of 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 and 5-a sealing cover.
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 2 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, 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 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 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 bearing chamber 1 of the gearbox housing, the inner end of the adjusting cover 3 is in tight fit with the locking strip 4 and the outer end face of the adjusting cover 3, and the device is used for realizing compression and positioning of the locking strip 4.
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.
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 housing, the outer threads and the locking grooves of the adjusting cover and the locking strips, effectively solves the problem of overlarge or interference of the assembly clearance of the rotating shaft and the tapered roller bearing, meets the requirement 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 housing, 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.
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 (2)
1. The utility model provides a tapered roller bearing clearance adjustment locking means, includes gearbox housing bearing room, sets up in inside transmission shaft and the tapered roller bearing of gearbox housing bearing room and installs the sealed lid on gearbox housing bearing room, its characterized in that: the gearbox housing bearing chamber is of an internal thread structure, a locking groove which is arranged oppositely is axially formed in the internal thread structure, the adjusting cover is screwed on the thread structure of the gearbox housing bearing chamber, the inner end of the adjusting cover is tightly matched with the tapered roller bearing in the bearing chamber in a propping mode and is used for achieving axial positioning of the tapered roller bearing, an even number of positioning grooves which are matched with the locking groove are uniformly distributed in the outer end of the adjusting cover along the circumferential direction, the locking strip is clamped in the positioning grooves of the adjusting cover, two ends of the locking strip are clamped in the locking groove in the internal thread structure and used for achieving positioning and locking of the adjusting cover, the sealing cover is screwed on the thread structure of the gearbox housing bearing chamber, 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 mode and is used for achieving pressing and positioning of the locking strip.
2. The tapered roller bearing clearance adjustment locking device of claim 1, wherein: 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 |
|---|---|---|---|
| CN202220779586.6U CN217002993U (en) | 2022-04-06 | 2022-04-06 | Tapered roller bearing clearance adjustment locking means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220779586.6U CN217002993U (en) | 2022-04-06 | 2022-04-06 | Tapered roller bearing clearance adjustment locking means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217002993U true CN217002993U (en) | 2022-07-19 |
Family
ID=82373958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220779586.6U Active CN217002993U (en) | 2022-04-06 | 2022-04-06 | Tapered roller bearing clearance adjustment locking means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217002993U (en) |
-
2022
- 2022-04-06 CN CN202220779586.6U patent/CN217002993U/en active Active
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