CN210174532U - A wheel hub assembly for fork truck transaxle - Google Patents
A wheel hub assembly for fork truck transaxle Download PDFInfo
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- CN210174532U CN210174532U CN201920582632.1U CN201920582632U CN210174532U CN 210174532 U CN210174532 U CN 210174532U CN 201920582632 U CN201920582632 U CN 201920582632U CN 210174532 U CN210174532 U CN 210174532U
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Abstract
The utility model discloses a wheel hub assembly for a forklift drive axle, which comprises a wheel hub connected with a half shaft, an intermediate shaft penetrating through the wheel hub and a wheel connected with the wheel hub, wherein the sealing part of the intermediate shaft and the wheel rim is provided with an oil seal component; wheel hub includes the revolving stage and sets firmly the cylinder support in the revolving stage one side, the one side of revolving stage is equipped with prevents changeing the boss just the revolving stage is connected with the wheel through coupling assembling, prevent changeing the boss with coupling assembling cooperation is used. The utility model has the advantages that the anti-rotation boss is arranged on one side of the turntable and is matched with the connecting component arranged in the unthreaded hole, so that after the rim nut is screwed up with the threaded section, the axial pretightening force received by the rim nut can be greatly reduced, and the reliability of connection between the wheel hub and the wheel rim is improved; the installation operation of the hub bolt is simplified, and the popularization and the use are facilitated.
Description
Technical Field
The utility model relates to a fork truck transaxle technical field specifically is a wheel hub assembly for fork truck transaxle.
Background
At present, the hub assembly for the forklift has the following two problems:
(1) the sealing member that the wheel hub assembly used for fork truck all is single skeleton oil blanket or two skeleton oil blanket: whether the single-framework oil seal or the double-framework oil seal is adopted, a shaft with a sealing element matched with a sealing lip has higher hardness and wear resistance, the requirement on the surface roughness of the shaft is higher, grinding processing is generally needed, and the processing cost of the shaft is increased; if the seal portion of the shaft becomes worn, the cost of replacing or repairing the shaft is relatively high.
(2) The connection mode of the hub and the hub bolt is basically in the form of bolts and nuts: after a rim ball nut for connecting a wheel and a hub is screwed, the nut for connecting the hub and a hub bolt is subjected to a large axial pretightening force, so that the reliability is not high; and the installation and operation of the hub bolt are complicated, and the cost of the hub assembly is increased.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a wheel hub assembly for fork truck transaxle to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a hub assembly for a forklift drive axle comprises a hub connected with a half shaft, a middle shaft penetrating through the hub and wheels connected with the hub,
an oil seal assembly is arranged at the sealing part of the intermediate shaft and the rim;
wheel hub includes the revolving stage and sets firmly the cylinder support in the revolving stage one side, the one side of revolving stage is equipped with prevents changeing the boss just the revolving stage is connected with the wheel through coupling assembling, prevent changeing the boss with coupling assembling cooperation is used.
As a further aspect of the present invention: the oil seal assembly comprises an oil seal inner ring and an oil seal outer ring, and the sealing part of the intermediate shaft and the wheel rim is positioned between the oil seal inner ring and the oil seal outer ring;
the inner ring of the oil seal is in interference fit with the intermediate shaft, and the outer ring of the oil seal is in interference fit with the inner hole of the rim.
As a further aspect of the present invention: the hub is of an integrated structure, and more than one pair of bearings are arranged between the hub and the intermediate shaft;
the outer ring of each pair of bearings is matched with the inner hole of the hub, and the inner ring of each pair of bearings is matched with the outer side of the circumference of the intermediate shaft.
As a further aspect of the present invention: the turntable of the hub is provided with a unthreaded hole along the circumferential direction;
the unthreaded hole is provided with more than two along the revolving stage of wheel hub cylinder support outside evenly divided.
As a further aspect of the present invention: the anti-rotation boss surrounds the outer side of the circumference of the joint of the turntable and the cylindrical support.
As a further aspect of the present invention: the connecting component comprises a hub bolt arranged in the unthreaded hole and a rim nut arranged on the hub bolt.
As a further aspect of the present invention: the hub bolt is of a three-section structure comprising an anti-rotation section, a positioning section and a thread section.
As a further aspect of the present invention: one side of the anti-rotation section is provided with an inner groove which is concavely matched with the anti-rotation boss;
when the anti-rotation boss is used, the inner concave surface of the inner groove is in fit contact with the outer convex surface of the anti-rotation boss.
As a further aspect of the present invention: the positioning section is an optical axis in interference fit with the unthreaded hole;
the outer diameter of the positioning section is larger than that of the thread section, and the outer diameter of the positioning section is smaller than that of the anti-rotation section.
As a further aspect of the present invention: and the outer side of the circumference of the thread section is provided with an external thread, and the rim nut is screwed with the thread section.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the oil seal assembly comprising the oil seal inner ring and the oil seal inner ring is arranged at the sealing part of the intermediate shaft and the rim, so that the sealing part between the intermediate shaft and the rim is positioned between the oil seal inner ring and the oil seal outer ring, the sealing performance of the intermediate shaft and the rim at the sealing part is ensured, and the processing requirement on the intermediate shaft is greatly reduced; meanwhile, the interference fit between the inner ring of the oil seal and the intermediate shaft and the interference fit between the outer ring of the oil seal and the inner hole of the wheel rim are realized, so that when the intermediate shaft and the wheel rim rotate relatively, the abrasion of the intermediate shaft in direct contact with a sealing part is reduced, and the cost of replacing and maintaining the intermediate shaft is further reduced;
(2) more than one pair of bearings are arranged between the hub and the intermediate shaft, and the outer ring of each pair of bearings is matched with the inner hole of the hub, and the inner ring of each pair of bearings is matched with the outer side of the circumference of the intermediate shaft, so that the hub is supported, and the hub and the intermediate shaft can stably and quickly rotate relatively;
(3) the anti-rotation boss is arranged on one side of the rotary table, and the anti-rotation boss is matched with the connecting assembly arranged in the unthreaded hole for use. Specifically, the method comprises the following steps: the wheel hub bolt is arranged into a three-section structure comprising an anti-rotation section, a positioning section and a thread section, so that the positioning section is in interference fit with the unthreaded hole, and an inner groove formed in one side of the anti-rotation section is concavely matched with the anti-rotation boss, so that after the wheel rim nut is screwed up with the thread section, the axial pre-tightening force applied to the wheel rim nut can be greatly reduced, and the connection reliability between the wheel hub and the wheel rim is improved; meanwhile, the outer diameter of the anti-rotation section is larger than that of the positioning section, so that the step of mounting the rim nut at the two ends of the hub bolt is omitted, and the rim nut only needs to be mounted on the thread section at one end of the hub bolt, so that the mounting operation of the hub bolt is simplified, and the popularization and the use are facilitated.
Drawings
FIG. 1 is a perspective view of the hub assembly of the present invention;
fig. 2 is a cross-sectional view of the wheel hub assembly of the present invention.
In the figure:
1-a hub, 11-a turntable, 111-a unthreaded hole, 12-a cylindrical support and 101-an anti-rotation boss;
2-oil seal assembly, 21-oil seal inner ring and 22-oil seal outer ring
3-connecting component, 31-hub bolt, 311-anti-rotation section, 312-positioning section, 313-threaded section, 32-rim nut and 301-inner groove;
4-bearing.
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.
Referring to fig. 1, a hub assembly for a forklift drive axle includes a hub 1 connected to half shafts, a middle shaft penetrating the hub 1, and wheels connected to the hub 1. When the forklift drive axle works, power is transmitted to the hub 1 of the hub assembly through the half shaft and drives the hub 1 to rotate around the middle shaft, the power is transmitted to the wheel connected with the hub 1 through the rotation of the hub 1, specifically, the hub 1 is connected with the rim of the wheel, the power is transmitted to the rim, and the rim drives the whole wheel to rotate, so that the power output is realized.
Referring to fig. 1-2, in order to reduce the processing requirement on the intermediate shaft and the processing cost of the intermediate shaft, an oil seal assembly 2 is disposed at the sealing portion between the intermediate shaft and the rim; the oil seal assembly 2 comprises an oil seal inner ring 21 and an oil seal outer ring 22, and the sealing part of the intermediate shaft and the wheel rim is positioned between the oil seal inner ring 21 and the oil seal outer ring 22; the inner ring 21 of the oil seal is in interference fit with the intermediate shaft, and the outer ring 22 of the oil seal is in interference fit with the inner hole of the wheel rim.
The oil seal assembly 2 is arranged to be of a structure comprising the oil seal inner ring 21 and the oil seal inner ring 21, and the sealing part between the intermediate shaft and the rim is located between the oil seal inner ring 21 and the oil seal outer ring 22, so that the sealing performance of the intermediate shaft and the rim at the sealing part is ensured, the abrasion of the intermediate shaft is slowed down, the abrasion of the intermediate shaft is further reduced, and the cost of replacement and maintenance is required; and make interference fit between the oil blanket inner circle 21 of oil blanket subassembly 2 and the jackshaft, realize relatively fixed between oil blanket inner circle 21 and the jackshaft for interference fit between the oil blanket outer lane 22 of oil blanket subassembly 2 and the rim hole realizes relatively fixed between oil blanket outer lane 22 and the rim, when taking place relative rotation between jackshaft and the rim, when guaranteeing the leakproofness at the oil blanket position between jackshaft and the rim, greatly reduced the processing requirement to the jackshaft.
The hub 1 is of an integrated structure, and more than one pair of bearings 4 are arranged between the hub 1 and the intermediate shaft; the outer ring of each pair of bearings 4 is matched with the inner hole of the hub 1, and the inner ring of each pair of bearings is matched with the outer side of the circumference of the intermediate shaft.
When the power is transmitted to the wheel hub 1 connected with the semi-axle through the semi-axle in specific use, the wheel hub 1 rotates around the middle axle under the supporting action of more than one pair of bearings 4. Many grades of holes that the internal diameter size is different are seted up to wheel hub 1's inside, and bearing 4 preferentially sets up two pairs to make the outer lane of every pair of bearing 4 and a grade of hole cooperation of wheel hub 1, the inner circle of bearing 4 and another grade of hole cooperation of wheel hub 1, realize the support to wheel hub 1, make can steady, quick carry out relative rotation between wheel hub 1 and the jackshaft.
Wheel hub 1 includes revolving stage 11 and sets firmly cylinder support 12 in the revolving stage one side, the one side of revolving stage 11 is equipped with prevents changeing boss 101, just revolving stage 11 is connected with the wheel through coupling assembling 3, prevent changeing boss 101 with coupling assembling 3 cooperation is used.
Specifically, the method comprises the following steps: the anti-rotation boss 101 surrounds the outer side of the circumference of the joint of the turntable 11 and the cylindrical support 12.
The turntable 11 of the hub is provided with a unthreaded hole 111 along the circumferential direction; the unthreaded holes 111 are uniformly distributed along the rotary table 11 outside the hub cylindrical support 12. The unthreaded holes 111 are formed in the rotary table 11 on the outer side of the circumference of the anti-rotation boss 101, six unthreaded holes 111 are preferably formed, the distance between every two adjacent unthreaded holes 111 is equal, the hub bolts 31 of the connecting assembly 3 are arranged in the unthreaded holes 111, tight connection between the whole hub 1 and a wheel rim is achieved, and the connection reliability is guaranteed.
The attachment assembly 3 includes a hub bolt 31 mounted in the unthreaded hole and a rim nut 32 mounted on the hub bolt. The hub bolt 31 is a three-section structure including an anti-rotation section 311, a positioning section 312 and a threaded section 313.
One side of the anti-rotation section 311 is provided with an inner groove 301 which is concavely matched with the anti-rotation boss 101; when the anti-rotation boss is used, the inner concave surface of the inner groove 301 is in fit contact with the outer convex surface of the anti-rotation boss 101. The inner concave surface of the inner groove 301 is attached to the outer convex surface of the anti-rotation boss 101, so that the possibility that the hub bolt 31 rotates in the using process is effectively prevented, and the using safety and the reliability of the whole hub bolt 31 are improved.
The positioning section 312 is an optical axis in interference fit with the unthreaded hole 111; the outer diameter of the positioning section 312 is larger than that of the threaded section 313, and the outer diameter of the positioning section 312 is smaller than that of the anti-rotation section 311.
The outer side of the circumference of the thread section 313 is provided with an external thread, and the rim nut 32 is screwed with the thread section 313.
During the use, the section 311 that prevents changeing of wheel hub bolt 31 is towards one side of cylindrical support 12, and wheel hub bolt 31 runs through from one side of cylindrical support 12 and inserts in unthreaded hole 111 for interference fit between locating section 312 and the unthreaded hole 111 of wheel hub bolt 31, and make wheel hub bolt 31 prevent changeing inner groovy 301 that section 311 one side was seted up and prevent changeing boss 101 cooperation, and at last with rim nut 32 and the fastening of screwing in of screw thread section 313.
Through interference fit between the positioning section 312 and the unthreaded hole 111 and concave fit between the anti-rotation section 311 and the anti-rotation boss 101, after the rim nut 32 is screwed with the thread section 313, axial pretightening force borne by the rim nut 32 can be greatly reduced, and the reliability of connection between the hub 1 and a wheel rim is improved; meanwhile, the wheel hub bolt 31 is arranged to be of a three-section structure comprising the anti-rotation section 311, the positioning section 312 and the thread section 313, the outer diameter of the anti-rotation section 311 is larger than that of the positioning section 312, the step of installing the rim nuts 32 at two ends of the wheel hub bolt 31 is omitted, only the rim nuts 32 are needed to be installed on the thread section 313 of the wheel hub bolt 31, the installation of the wheel hub bolt 31 is simplified, the assembly cost of the whole wheel hub assembly is reduced, and the wheel hub assembly is favorable for popularization and use.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. The utility model provides a wheel hub assembly for fork truck transaxle, includes wheel hub (1) that links to each other with the semi-axis, runs through the jackshaft in wheel hub (1) and the wheel that links to each other with wheel hub (1), its characterized in that:
an oil seal assembly (2) is arranged at the sealing part of the intermediate shaft and the hub (1);
wheel hub (1) includes revolving stage (11) and sets firmly cylinder support (12) in the revolving stage one side, the one side of revolving stage (11) is equipped with prevents changeing boss (101), just revolving stage (11) are connected with the wheel through coupling assembling (3), prevent changeing boss (101) with coupling assembling (3) cooperation is used.
2. The hub assembly of claim 1, wherein: the oil seal assembly (2) comprises an oil seal inner ring (21) and an oil seal outer ring (22), and the sealing part of the intermediate shaft and the wheel rim is positioned between the oil seal inner ring (21) and the oil seal outer ring (22);
the oil seal inner ring (21) is in interference fit with the intermediate shaft, and the oil seal outer ring (22) is in interference fit with an inner hole of the rim.
3. The hub assembly of claim 1, wherein: the hub (1) is of an integrated structure, and more than one pair of bearings (4) are arranged between the hub (1) and the intermediate shaft;
the outer ring of each pair of bearings (4) is matched with the inner hole of the hub (1), and the inner ring of each pair of bearings is matched with the outer side of the circumference of the intermediate shaft.
4. A hub assembly for a forklift drive axle according to claim 1 or 3, wherein: a light hole (111) is formed in the rotary table (11) of the hub along the circumferential direction;
more than two unthreaded holes (111) are uniformly distributed along the rotary table (11) on the outer side of the hub cylindrical support (12).
5. The hub assembly of claim 1, wherein: the anti-rotation boss (101) surrounds the outer side of the circumference of the joint of the turntable (11) and the cylindrical support (12).
6. The hub assembly of claim 1, wherein: the connecting component (3) comprises a hub bolt (31) arranged in the unthreaded hole and a rim nut (32) arranged on the hub bolt.
7. The hub assembly of claim 6, wherein: the hub bolt (31) is of a three-section structure comprising an anti-rotation section (311), a positioning section (312) and a threaded section (313).
8. The hub assembly of claim 7, wherein: one side of the anti-rotation section (311) is provided with an inner groove (301) which is concavely matched with the anti-rotation boss (101);
when the anti-rotation boss is used, the inner concave surface of the inner groove (301) is in fit contact with the outer convex surface of the anti-rotation boss (101).
9. The hub assembly of claim 7, wherein: the positioning section (312) is an optical axis in interference fit with the unthreaded hole (111);
the outer diameter of the positioning section (312) is larger than that of the threaded section (313), and the outer diameter of the positioning section (312) is smaller than that of the anti-rotation section (311).
10. The hub assembly of claim 7, wherein: the outer side of the circumference of the threaded section (313) is provided with external threads, and the rim nut (32) is screwed with the threaded section (313).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920582632.1U CN210174532U (en) | 2019-04-25 | 2019-04-25 | A wheel hub assembly for fork truck transaxle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920582632.1U CN210174532U (en) | 2019-04-25 | 2019-04-25 | A wheel hub assembly for fork truck transaxle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210174532U true CN210174532U (en) | 2020-03-24 |
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ID=69831789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920582632.1U Active CN210174532U (en) | 2019-04-25 | 2019-04-25 | A wheel hub assembly for fork truck transaxle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210174532U (en) |
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2019
- 2019-04-25 CN CN201920582632.1U patent/CN210174532U/en active Active
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