WO2018071964A1 - Monture pivotante destinée à une béquille de remorque ou à une roue jockey - Google Patents

Monture pivotante destinée à une béquille de remorque ou à une roue jockey Download PDF

Info

Publication number
WO2018071964A1
WO2018071964A1 PCT/AU2017/051123 AU2017051123W WO2018071964A1 WO 2018071964 A1 WO2018071964 A1 WO 2018071964A1 AU 2017051123 W AU2017051123 W AU 2017051123W WO 2018071964 A1 WO2018071964 A1 WO 2018071964A1
Authority
WO
WIPO (PCT)
Prior art keywords
mount
rotor
stand
trailer
attached
Prior art date
Application number
PCT/AU2017/051123
Other languages
English (en)
Inventor
Michael David Sharman
Original Assignee
MD & LA Sharman Pty Ltd
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
Priority claimed from AU2016904284A external-priority patent/AU2016904284A0/en
Application filed by MD & LA Sharman Pty Ltd filed Critical MD & LA Sharman Pty Ltd
Publication of WO2018071964A1 publication Critical patent/WO2018071964A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S9/00—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks
    • B60S9/14—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for both lifting and manoeuvring
    • B60S9/16—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for both lifting and manoeuvring for operating only on one end of vehicle
    • B60S9/18—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for both lifting and manoeuvring for operating only on one end of vehicle mechanically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60D—VEHICLE CONNECTIONS
    • B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
    • B60D1/58—Auxiliary devices
    • B60D1/66—Props

Definitions

  • the present invention relates to a pivotal mount for attaching a stand or jockey wheel to a trailer.
  • the present invention provides a pivotal mount which is equally applicable to jockey wheels or stands (sometimes referred to as jack stands) used to support a trailer drawbar when a trailer is unhitched from a towing vehicle.
  • jockey wheels or stands sometimes referred to as jack stands
  • jack stands used to support a trailer drawbar when a trailer is unhitched from a towing vehicle.
  • pivotal mount in the form of two plates, one attached to the draw bar and one to the stand with a bolt or the like passing between the two to act as an axle for rotation.
  • a spring loaded pin attached to the stand plate passes into the vehicle plate to secure the stand either horizontally or vertically.
  • Such pivotal mounts have small contact regions and high leverage between the axle the plates which subjects the plates to concentrated forces and consequently allows slop to easily develop in the mechanism. This gives rise to unwanted movement of the plates and consequently the trailer.
  • the locking pin between the plates can often become jammed or alternatively dislodged by the movement of the plates which can lead to the mount unexpectedly collapsing.
  • the object of this invention is to provide a rugged pivotal mount to alleviate the above problem, or at least provide the public with a useful alternative.
  • the invention provides a mount for rotatably attaching a stand to a trailer, comprising a tubular body and a cylindrical rotor mounted within the body thereby giving a large contact area between the rotor and the body for transfer of force through the mount.
  • the body comprises a locking pin and the rotor comprises a plurality of radially disposed slots for selectively engaging the locking pin thereby allowing the body and rotor to be selectively locked at discrete angles with respect to each other.
  • the locking pin is configured for vertical operation and is spring actuated.
  • the body may be attached to the trailer and the rotor attached to the stand, or the body may be attached to the stand and the rotor attached to the trailer.
  • the mount may be a jockey wheel.
  • any one of the aspects mentioned above may include any of the features of any of the other aspects mentioned above and may include any of the features of any of the embodiments described below as appropriate.
  • Figure 1 shows a trailer with a trailer stand attached to its drawbar by a pivotal mount according to a first embodiment of the present invention.
  • Figures 2A and 2B show the trailer stand in a deployed and retracted position respectively.
  • Figure 3 shows a pivotal mount in isolation.
  • Figure 4 shows the body of the pivotal mount.
  • Figure 5 shows the rotor of the pivotal mount.
  • Figures 6A and 6B show the locking mechanism of the pivotal mount complete and with its casing removed.
  • Figures 7A and 7B show a second ruggedized embodiment of the invention from a front view and a cut-away side view.
  • the present invention provides a ruggedized pivotal mount for a trailer stand or jockey wheel.
  • the mount comprises a tubular body in which a rotor attached to the trailer stand rotates.
  • a locking pin attached to the body passes vertically through the body to engage the rotor thus securing the stand in a desired position and making it impossible for the pin to be dislodged.
  • a pivotal mount 40 according to a first embodiment of the present invention is shown in context in Figure 1 , attaching a trailer stand 30 to the drawbar 22 of a trailer
  • the pivotal mount 40 allows the trailer stand 30 to move between a deployed position as shown in Figure 2A and a retracted position as shown in Figure 2B.
  • the stand can be locked in either position with the aid of a spring locking mechanism 70 as described below.
  • To move from the retracted position to the deployed position the stand handle 34 is rotated to retract the bottom portion 32 of the stand into the top portion 31 of the stand, thus lifting the platform 33 off of the ground.
  • the lifting ring 82 is then pulled to disengage the spring locking mechanism and then the stand 30 rotated until it is parallel with the draw bar. Releasing the lifting ring will allow the spring locking mechanism to engage once more and hold the stand in the retracted position. To lower the stand the procedure is reversed. As the spring locking mechanism is attached to the portion of the mount attached to the drawbar it
  • a pivotal mount 40 is shown in isolation in Figure 3.
  • the mount comprises three main components: body 50; rotor 60 and spring locking mechanism 70, which are shown in isolation in Figures 4, 5 and 6 respectively.
  • the body 50 of the pivotal mount as detailed in Figure 4 comprises a short tubular section 51 grooved on its inside to accept front circlip 52 and rear circlip 53 which work together to retain the rotor 60. Alternatively a lip could be machined into the tubular section to replace one of the circlips.
  • the circlips provide a robust means of holding the rotor in place, but can be removed if needed to disassemble the mount for maintenance or partial replacement.
  • Flat 54 allows for easy mounting of the spring locking mechanism 70 which controls movement of a locking pin 80 through locking hole 55. Drain hole 56 allows any water or dirt to drain from the body.
  • Figure 5 shows the rotor 60 of the pivotal mount which comprises a circular body 61 with peripherally disposed locking apertures 62 for accepting the locking pin 80.
  • Various configurations of locking apertures can be used; preferably four locking apertures are disposed at 90° to each other and when the mount is locked serve to position the stand either parallel with or at 90° to the drawbar.
  • Mounting tube 63 extends from the body for attaching to the stand 30.
  • FIGS 6A and 6B respectively show the spring locking mechanism 70 complete and with its outer casing 71 removed.
  • the locking mechanism 70 provides a locking pin 80 which is normally extended by spring 90.
  • Lifting pin 82 allows the locking pin to be retracted.
  • the locking pin includes flange 81 which limits the travel of the pin and also supports a first end of the spring 90.
  • the second end of the spring acts against the load bush 91 through which the pin passes and which is retained in the casing 71 by circlip 92. Drain hole 72 allows any water or dirt to drain from the casing.
  • a second, heavy duty, embodiment of the invention is shown as the rotating mount 400 in the front view of Figure 7A and the cutaway side view of Figure7B.
  • the mount 400 is a ruggedized version of the mount 40 in which the rotor 410 is retained by being sandwiched between a back plate 403 and an annular front cover 404; in contrast to using circlips as retainers.
  • the rear 403 and front cover 404 are held apart by annular body 402 to form a cavity for the rotor 410.
  • the front cover 404 is held in place by screws 405 allowing the mount to be easily assembled or disassembled if needed.
  • the second embodiment 400 functions in the same way as the first
  • the invention provides several advantages over the known prior art.
  • the relatively large size of the rotor and housing provides a robust mechanism with a high contact area for spreading loads.
  • the vertical force is taken by the circumference of the mount body as opposed to a relatively small diameter bolt or pin. Consequently wear from the vertical force is virtually eliminated.
  • Having the moving element (i.e. rotor) within a fixed element (i.e. housing) allows the two elements to be easily fixed to each other to prevent lateral separation whilst still allowing relative rotation. With the rotor restrained around almost its entire circumference, inadvertent movement is prevented, keeping the stand upright eliminating transfer of force to the horizontal plane and eliminating any forces acting to dislodge the locking pin.
  • the locking mechanism is also fixed to the stationary element, thus making it convenient to use when the stand is in any position and as the locking mechanism operates vertically it is not subjected to load from the trailer making it easy to engage or disengage and no danger of it being accidentally dislodged.
  • the relatively large size of the housing also provides a large contact area with the trailer drawbar.
  • the housing is welded around its periphery to the drawbar to provide a rigid mount. The design effectively removes the high leverage point of prior art designs thus resulting in a rugged pivotal mount which will maintain its integrity for many years.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)

Abstract

L'invention porte sur une monture pour fixer en rotation un support à une remorque avec un corps tubulaire et un rotor cylindrique montés à l'intérieur du corps, donnant une grande zone de contact entre le rotor et le corps pour le transfert de force à travers la monture. Le rotor comporte des fentes agencées radialement pour être sélectivement en prise avec la broche de verrouillage, ce qui permet au corps et au rotor d'être verrouillés sélectivement à des angles distincts les uns des autres.
PCT/AU2017/051123 2016-10-21 2017-10-18 Monture pivotante destinée à une béquille de remorque ou à une roue jockey WO2018071964A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2016904284 2016-10-21
AU2016904284A AU2016904284A0 (en) 2016-10-21 Pivotal Mount for a Trailer Stand or Jockey Wheel

Publications (1)

Publication Number Publication Date
WO2018071964A1 true WO2018071964A1 (fr) 2018-04-26

Family

ID=62018367

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2017/051123 WO2018071964A1 (fr) 2016-10-21 2017-10-18 Monture pivotante destinée à une béquille de remorque ou à une roue jockey

Country Status (1)

Country Link
WO (1) WO2018071964A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3779579A (en) * 1972-07-07 1973-12-18 Smith & Co Inc Gordon Wheel mounting assembly
US3863894A (en) * 1973-09-20 1975-02-04 Charles Machine Works Jacking apparatus for a trailer tongue
US5011119A (en) * 1990-01-25 1991-04-30 Harrington Robert L Conveniently attached hydraulic trailer jack
US6302381B1 (en) * 1999-04-09 2001-10-16 Fulton Performance Products, Inc. Swivel jack assembly
US20090179400A1 (en) * 2008-01-14 2009-07-16 Van Der Plaats Billy J Rotational breakaway trailer jack assembly and method of use
US20130341579A1 (en) * 2007-07-16 2013-12-26 Cequent Trailer Products, Inc. Jack assembly

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3779579A (en) * 1972-07-07 1973-12-18 Smith & Co Inc Gordon Wheel mounting assembly
US3863894A (en) * 1973-09-20 1975-02-04 Charles Machine Works Jacking apparatus for a trailer tongue
US5011119A (en) * 1990-01-25 1991-04-30 Harrington Robert L Conveniently attached hydraulic trailer jack
US6302381B1 (en) * 1999-04-09 2001-10-16 Fulton Performance Products, Inc. Swivel jack assembly
US20130341579A1 (en) * 2007-07-16 2013-12-26 Cequent Trailer Products, Inc. Jack assembly
US20090179400A1 (en) * 2008-01-14 2009-07-16 Van Der Plaats Billy J Rotational breakaway trailer jack assembly and method of use

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