GB1602438A - Wheel hub assembly - Google Patents

Wheel hub assembly Download PDF

Info

Publication number
GB1602438A
GB1602438A GB28932/77A GB2893277A GB1602438A GB 1602438 A GB1602438 A GB 1602438A GB 28932/77 A GB28932/77 A GB 28932/77A GB 2893277 A GB2893277 A GB 2893277A GB 1602438 A GB1602438 A GB 1602438A
Authority
GB
United Kingdom
Prior art keywords
hub
axle
wedge
screw
pitch
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.)
Expired
Application number
GB28932/77A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deere and Co
Original Assignee
Deere and Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Deere and Co filed Critical Deere and Co
Priority to GB28932/77A priority Critical patent/GB1602438A/en
Priority to IT49993/78A priority patent/IT1105420B/en
Priority to FR7818801A priority patent/FR2397295A1/en
Priority to DE2828470A priority patent/DE2828470C3/en
Priority to ES1978244784U priority patent/ES244784Y/en
Publication of GB1602438A publication Critical patent/GB1602438A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B60B27/0015—Hubs for driven wheels
    • B60B27/0021—Hubs for driven wheels characterised by torque transmission means from drive axle
    • B60B27/0026—Hubs for driven wheels characterised by torque transmission means from drive axle of the radial type, e.g. splined key
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B60B27/06—Hubs adapted to be fixed on axle
    • B60B27/065—Hubs adapted to be fixed on axle characterised by the fixation of the hub to the axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
    • B60B35/02—Dead axles, i.e. not transmitting torque
    • B60B35/10—Dead axles, i.e. not transmitting torque adjustable for varying track
    • B60B35/1009—Dead axles, i.e. not transmitting torque adjustable for varying track operated manually
    • B60B35/1027—Dead axles, i.e. not transmitting torque adjustable for varying track operated manually comprising a clamping mechanism
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
    • B60B35/02—Dead axles, i.e. not transmitting torque
    • B60B35/10—Dead axles, i.e. not transmitting torque adjustable for varying track
    • B60B35/1072—Dead axles, i.e. not transmitting torque adjustable for varying track by transversally movable elements
    • B60B35/1081—Dead axles, i.e. not transmitting torque adjustable for varying track by transversally movable elements the element is a wheel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
    • B60B35/12—Torque-transmitting axles
    • B60B35/121—Power-transmission from drive shaft to hub
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B37/00—Wheel-axle combinations, e.g. wheel sets
    • B60B37/04—Wheel-axle combinations, e.g. wheel sets the wheels being rigidly attached to solid axles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
    • F16D1/08—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key
    • F16D1/0876—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with axial keys and no other radial clamping
    • F16D1/0882—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with axial keys and no other radial clamping the key being axially tapered and tightening when loaded axially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B2310/00—Manufacturing methods
    • B60B2310/30—Manufacturing methods joining
    • B60B2310/305—Manufacturing methods joining by screwing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B2310/00—Manufacturing methods
    • B60B2310/30—Manufacturing methods joining
    • B60B2310/306—Manufacturing methods joining by clamping or wedging, e.g. by clamping inserts as joining means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/20—Off-Road Vehicles
    • B60Y2200/22—Agricultural vehicles
    • B60Y2200/221—Tractors

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Axle Suspensions And Sidecars For Cycles (AREA)
  • Agricultural Machines (AREA)
  • Pulleys (AREA)
  • Tires In General (AREA)
  • Clamps And Clips (AREA)
  • Rolling Contact Bearings (AREA)

Description

(54) WHEEL HUB ASSEMBLY (71) We, DEERE & COMPANY, a corporation organised and existing under the laws of the State of Delaware, United States of America, of Moline, Illinois 61265, United States of America, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: This invention relates to a wheel hub assembly for a vehicle, e.g. an agricultural tractor.
Conventionally a tractor wheel is mounted by its hub on an axle which is keyed in a lengthwise direction to the hub so that torque from the axle is transmitted through the key to the wheel. In order to secure the hub against movement along the axle, wedges are screwed into locking engagement between the axle and the hub. Each wedge is shaped so that its surface which is radially inward with respect to the axle conforms with the axle surface whilst its radially outer surface is wedge-shaped to mate with a correspondingly wedge-shaped surface of the hub. One set of screws, which pass through the wedges and which are in threaded engagement with the hub, is used to drive the wedges into their working engagement. To release the wedges these screws are, of course, undone but another set of screws is also required in order to drive the wedges out of their still strongly wedged condition.
The present invention concerns a wheel hub assembly in which the same screws which are used to bring about the engagement of the wedges are employed also to separate them from the hub.
According to the invention a wheel hub assembly for a vehicle comprises a hub for mounting on an axle and a hub locking device comprising a wedge, for wedging engagement between the hub and the axle, and a screw threadably engageable with the hub and the wedge, the screw having a first threaded portion with a first pitch for engaging the hub, and a second threaded portion with a second pitch for engaging the wedge, the first pitch being greater than the second pitch and the hands of the threads being the same.
The amount of movement imparted to the wedge by one turn of the screw will be equal to the difference of the two pitches and it is possible to obtain fine adjustability of the wedge whilst still using coarse threads which can transmit high torque loads and which can be less affected by dirt accumulation. An additional advantage is that screws with such coarse threads can be produced by rolling.
Desirably, a plurality of hub locking devices is used for a single hub.
An embodiment of the invention will now be described with reference to the diagrammatic drawings which accompanied the provisional specification and in which: Fig. 1 is a cross section through a right hand (with respect to the driver) wheel assembly, including a hub locking device, taken on the line I-I of Fig. 2, but with an axle and other components; and Fig. 2 is a view of the assembly looking from the right in Fig. 1 with certain parts removed.
In the drawings a driven rear axle 10, of which only an outer end portion is shown, of an agricultural tractor (not shown) has a hub 12 mounted as a sleeve adjacent each end for sliding movement along the axle. As the arrangement at both ends of the axle is similar, only that of one end will be described.
The hub 12 is rigidly connected near its radially outer periphery to a central annular plate 14 of a standard wheel by eight equally spaced bolts 16 which with the plate are omitted from Fig. 2 and which are threadably engaged in bores 18 of the hub 12. The plate 14 abuts the side, nearer the axle end, of the hub 12 of which a shoulder portion 20 is received within the central opening of the plate 14. Alternatively, the plate 14 and the hub 12 can form an integral structure.
The hub 12 is keyed to the axle 10 by a projection 22, of the hub 12, which runs in a channel 24 of the axle, and thus is prevented from turning about the axle. Inward travel (i.e. toward the left in Fig. 1) by the hub 12 along the axle 10 is limited by a shoulder 26 of the axle and outward travel by a stop split ring 27 which is located in any of a number of spaced apart grooves in the axle surface at the outer end of the axle.
In order to lock the hub 12 on the axle 10 a pair of locking devices 28 is used each consisting of a wedge 30 and a screw 32 (which is omitted from Fig. 2), the pair of devices subtending an angle of 80 therebetween at the axle axis. The wedge 30 is positioned in a correspondingly shaped recess 34 in the radially inner face of the hub 12 and has a bore 36 with a screw threaded portion 38 with a pitch of 1.5 mm and a diameter of 20 mm. The hub 12 also has a bore 40 which is aligned with the bore 36 and is screw threaded with a pitch of 2.5 mm and a diameter of 18 mm, the screw thread being of the same hand. The screw 32 is correspondingly threaded and engages the threaded bore 40 and the threaded portion 38. The screw is produced by rolling.
The hub locking devices function as follows. When the hub 12 is free to move longitudinally on the axle 10 outwardly in Fig. 1, i.e. when the wedge 30 is loose in the recess 34, it can be made fast with the axle by tightening the screw 32. It will readily be appreciated that one turn of the screw will result in 2.5 mm - 1.5 mm = 1 mm movement of the wedge 30. Thus although the thread is coarse a relatively fine adjustment of the wedge is obtained. In order to release the hub 12 from the locked condition all that is necessary is to unscrew the screw 32 which immediately causes movement of the wedge 30 outwardly. When the wedge is freed and the tractor has been jacked up, the hub 12 can be moved along the axle 10, riding along the projection 22.
An alternative arrangement for moving the hub 12 along the axle 10 is that which we have described in our patent specification number 1,468,837. In particular, a helical groove 42, which is shown in broken lines superimposed on Figures 1 and 2, can be provided in the axle 10 and a pair of balls (not shown) is trapped in the hub 12 so that they project into, and can run in, the groove 42. This allows the hub 12 to be moved along the axle simply by driving the axle in the appropriate direction without the need to jack up the tractor.
WHAT WE CLAIM IS: 1. A wheel hub assembly for a vehicle comprising a hub for mounting on an axle and a hub locking device comprising a wedge, for wedging engagement between the hub and the axle, and a screw threadably engageable with the hub and the wedge, the screw having a first threaded portion with a first pitch for engaging the hub, and a second threaded portion with a second pitch for engaging the wedge, the first pitch being greater than the second pitch and the hands of the threads being the same.
2. A wheel hub assembly according to claim 1 in which the first pitch is 2.5 mm and the second pitch is 1.5 mm.
3. A wheel hub assembly according to claim 1 or 2 having a plurality of hub locking devices and a single said hub, the hub locking devices being adapted so that, in use, the screws are spaced from, and parallel to, the axle.
4. A wheel hub assembly substantially as described herein with reference to, and as illustrated in, the diagrammatic drawings which accompanied the provisional specification.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (4)

  1. **WARNING** start of CLMS field may overlap end of DESC **.
    of the axle and outward travel by a stop split ring 27 which is located in any of a number of spaced apart grooves in the axle surface at the outer end of the axle.
    In order to lock the hub 12 on the axle 10 a pair of locking devices 28 is used each consisting of a wedge 30 and a screw 32 (which is omitted from Fig. 2), the pair of devices subtending an angle of 80 therebetween at the axle axis. The wedge 30 is positioned in a correspondingly shaped recess 34 in the radially inner face of the hub
    12 and has a bore 36 with a screw threaded portion 38 with a pitch of 1.5 mm and a diameter of 20 mm. The hub 12 also has a bore 40 which is aligned with the bore 36 and is screw threaded with a pitch of 2.5 mm and a diameter of 18 mm, the screw thread being of the same hand. The screw 32 is correspondingly threaded and engages the threaded bore 40 and the threaded portion 38. The screw is produced by rolling.
    The hub locking devices function as follows. When the hub 12 is free to move longitudinally on the axle 10 outwardly in Fig. 1, i.e. when the wedge 30 is loose in the recess 34, it can be made fast with the axle by tightening the screw 32. It will readily be appreciated that one turn of the screw will result in 2.5 mm - 1.5 mm = 1 mm movement of the wedge 30. Thus although the thread is coarse a relatively fine adjustment of the wedge is obtained. In order to release the hub 12 from the locked condition all that is necessary is to unscrew the screw 32 which immediately causes movement of the wedge 30 outwardly. When the wedge is freed and the tractor has been jacked up, the hub 12 can be moved along the axle 10, riding along the projection 22.
    An alternative arrangement for moving the hub 12 along the axle 10 is that which we have described in our patent specification number 1,468,837. In particular, a helical groove 42, which is shown in broken lines superimposed on Figures 1 and 2, can be provided in the axle 10 and a pair of balls (not shown) is trapped in the hub 12 so that they project into, and can run in, the groove 42. This allows the hub 12 to be moved along the axle simply by driving the axle in the appropriate direction without the need to jack up the tractor.
    WHAT WE CLAIM IS: 1. A wheel hub assembly for a vehicle comprising a hub for mounting on an axle and a hub locking device comprising a wedge, for wedging engagement between the hub and the axle, and a screw threadably engageable with the hub and the wedge, the screw having a first threaded portion with a first pitch for engaging the hub, and a second threaded portion with a second pitch for engaging the wedge, the first pitch being greater than the second pitch and the hands of the threads being the same.
  2. 2. A wheel hub assembly according to claim 1 in which the first pitch is 2.5 mm and the second pitch is 1.5 mm.
  3. 3. A wheel hub assembly according to claim 1 or 2 having a plurality of hub locking devices and a single said hub, the hub locking devices being adapted so that, in use, the screws are spaced from, and parallel to, the axle.
  4. 4. A wheel hub assembly substantially as described herein with reference to, and as illustrated in, the diagrammatic drawings which accompanied the provisional specification.
GB28932/77A 1977-07-11 1977-07-11 Wheel hub assembly Expired GB1602438A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB28932/77A GB1602438A (en) 1977-07-11 1977-07-11 Wheel hub assembly
IT49993/78A IT1105420B (en) 1977-07-11 1978-06-22 FIXING DEVICE FOR A WHEEL ESPECIALLY OF AN AGRICULTURAL TRACTOR ON A AXLE
FR7818801A FR2397295A1 (en) 1977-07-11 1978-06-23 DEVICE FOR FIXING A WHEEL, IN PARTICULAR A TRACTOR WHEEL ON AN AXLE
DE2828470A DE2828470C3 (en) 1977-07-11 1978-06-29 Fastening device for a wheel, in particular an agricultural tractor, on an axle
ES1978244784U ES244784Y (en) 1977-07-11 1978-07-10 A FIXING DEVICE FOR A WHEEL

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB28932/77A GB1602438A (en) 1977-07-11 1977-07-11 Wheel hub assembly

Publications (1)

Publication Number Publication Date
GB1602438A true GB1602438A (en) 1981-11-11

Family

ID=10283535

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28932/77A Expired GB1602438A (en) 1977-07-11 1977-07-11 Wheel hub assembly

Country Status (5)

Country Link
DE (1) DE2828470C3 (en)
ES (1) ES244784Y (en)
FR (1) FR2397295A1 (en)
GB (1) GB1602438A (en)
IT (1) IT1105420B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4317596A (en) * 1980-05-20 1982-03-02 Deere & Company Adjustable wheel assembly
DE3400701A1 (en) * 1984-01-11 1985-07-18 Bayerische Motoren Werke AG, 8000 München Device for the attachment of a vehicle wheel to a rotatably mounted axle component

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191327774A (en) * 1913-02-06 1914-09-03 Abel Joseph Jatteau Improvements in or relating to Conical Joints particularly for the Hubs of Vehicle Wheels.
US1547444A (en) * 1922-11-02 1925-07-28 Austin H Rankin Emergency axle
FR1192621A (en) * 1958-03-03 1959-10-27 Variable track axle, more specifically for tiller
US3279831A (en) * 1964-11-23 1966-10-18 Int Harvester Co Tractor wheel mounting
US3790216A (en) * 1972-11-21 1974-02-05 Peterson Mfg Co Wedge locking wheel mounting

Also Published As

Publication number Publication date
ES244784Y (en) 1980-05-16
DE2828470C3 (en) 1980-02-14
ES244784U (en) 1979-11-16
IT7849993A0 (en) 1978-06-22
DE2828470A1 (en) 1979-01-25
DE2828470B2 (en) 1979-06-21
FR2397295B1 (en) 1982-08-13
FR2397295A1 (en) 1979-02-09
IT1105420B (en) 1985-11-04

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19920515