AU603990B2

AU603990B2 - Lifting device

Info

Publication number: AU603990B2
Application number: AU60724/86A
Authority: AU
Inventors: Russell John Williams
Original assignee: Individual
Current assignee: Individual
Priority date: 1985-10-11
Filing date: 1986-07-30
Publication date: 1990-12-06
Anticipated expiration: 2006-07-30
Also published as: AU6072486A

Description

'I C O M M 0 N

C-MMO

W E A L T H' OF A U PATENTS ACT 1952 COMPLETE SPECIFICATION S T R A L I A 603990 (Original) FOR OFFICE USE Cy. ass Int. Class (6 ovq/ Application Number: Lodged: Complete Specification Lodged: Accepted: Published: Priority: Related Art: j Name of Applicant: Address of Applicant: to i I t I I t SActual Inventor(99: i 1 Address for Service: 4 4o 4 a RUSSELL JOHN WILLIAMS R.M.B. 8623, BAIRNSDALE 3875, in the State of Victoria, C6mmonwealth of Australia RUSSELL JOHN WILLIAMS DAVIES COLLISON, Patent Attorneys, 3, Little Collins Street, Melbourne, 3000.

Complete specification for the invention entitled: "LIFTING DEVICE" The following statement is a full description of this invention, including the best method of performing it known to us -1- S1 2 3 4 6 7 8 9 11 i ii 12 13 14 16 17 18 19 21 22 23 24 26 27 S28 29 S31 32 33 34 36 -37 t 8 V 900131 I n, Y 9,~ "LIFTING DEVICE This invention relates generally to lifting devices and more particularly though not exclusively to devices which are adapted to be mounted on vehicles such as trucks, utility vehicles or the like.

An object of the present invention is to provide an improved lifting device which is relatively simple in construction and operation.

According to the present invention there is provided a lifting device for a vehicle comprising a mast section having a longitudinal axis said mast section having one end So*\A 0o e- 6-F disposed adjacent a support surface on the vehicle a.4 said Conencc -o c o-s- so -s +o 0bmast section being pivotally/ movable between an operative position in which the longitudinal axis of the mast section is generally upright and a stowed position in which the longitudinal axis thereof is generally horizontal or substantially inclined with respect to the disposition of the longitudinal axis in the operative position, the device further including a jib section having a longitudinal axis one end of said jib section being pivotally mounted to said mast section so as to be capable of pivotal movement between o o a first/position in which the longitudinal axis of said jib t-rcrsve.rsliy section extends laterally of the longitudinal axis of said mast section and a second position in which the the jib section is disposed along side said mast section with their longitudinal axes extending generally in the same direction, the lifting device further including a strut member having one end pivotally connected to one of said mast section or said jib section, the other end being releasably connectible to the other of said mast or jib sections so as to be capable of supporting said jib section in said first position and releasable so that when the jib section is in the said second position, and said mast section is in said stowed position said strut member is disposed generally along side and extends generally in the same direction as that of the mast section and the jib section.

Preferably the mast section is pivotally mounted at the ,araspe.027, lifting.dev.

I-e I 1 2 3 4 6 7 8 9 11 12 04 ~13 0 0 14 a 00 14 o &4 0oo 15 00 16 j o0 17 18 19 21 22 23 24 26 I 27 i 28 29 31 32 33 34 36 37 '~IV c( i900131 2 aforementioned one end for movement between the operative and inoperative positions. The section may comprise an upper part and a lower part, these two parts being rotatable relative to one another about the longitudinal axis.

Preferably the jib section is operatively connected adjacent the free end portion of the upper part.

The lifting device may further include a base, which, in use, is secured to or rests upon the support surface the mast section including a hinge plate at the aforementioned one end thereof which is hingedly connected to the base plate. Locking means may be provided for retaining the mast section in the upright operative position.

Preferably the jib section is mounted for pivotal movement between the abovementioned one position to a second position. A strut member may be provided which extends between the jib section and the mast section so as to retain the jib section in the aforementioned one position. This strut member may be capable of selective disposition so that the jib section can adopt one or more intermediate positions between the extreme positions.

The device may further include a stabilizing member which is releasably securable to a part of the lifting device the stabilizing member including a leg which in a support position is spaced from the longitudinal axis of the mast section to assist in supporting a load carried by the device.

Mounting means may be provided for a winch on the lower part of the mast section such mounting means being in the form of a support plate upon which the winch can be disposed, the winch line being arranged so that it passes through the mast section and along the jib section via a pulley assembly.

The stabilizing member may comprise a support leg having a foot plate at one end thereof and a mounting arm which is adjustably movable along the length of the support leg, the free end of the mounting arm being receivable in a mounting bracket which is disposed on the base plate of the lifting device.

.,arabLe.027,1ifting.dev, -3 A preferred embodiment of the invention will hereinafter be described with reference to the accompanying drawings and in those drawings: FIGURE 1 is a perspective view of the lifting device according to the invention; FIGURE 2 is a view showing the lifting device on the tray of a utility vehicle in an operating position; and FIGURE 3 shows the:lifting device shown in Figure 1 in a non-use position.t Referring to the drawings the lifting device generally indicated at 1 comprises a mast section 3 having a longitudinal axis, the mast section being connected to or resting on a support surface. As shown 1 in the drawings the support surface is the tray 61 of a truck 60. The mast section 3 is adapted to be ,i disposed upright with respect to the support surface i 0when it is being used. The lifting device further includes a jib section 25, which, when in use, extends laterally from the mast section with respect to the longitudinal axis thereof. The lifting device as shown further include means by which a winch 50 or similar hauling device can be mounted thereon. As shown the jib section 25 is mounted for at least limited pivotal or rotational movement relative to the longitudinal aspect of the mast section.

As shown the mast section 3 is adapted to be mounted I -for pivotal movement between the upright in-use position and an inoperative position in which it rests on the support surface. Furthermore, the jib section 25 is mounted for pivotal movement relative to the mast section so that it can adopt an extended position, when in use, or a collapsed position.

'As shown, the lifting device includes a stabilizer

I

ii 4 which is releasably securable to the:mast or an associated part of the lifting device so that when in an operating position the stabilizer assists in providing support for a load carried by the lifting device.

As shown, the mast section 3 comprises an upper part 7, and a lower part 5, the upper part being rotatable relative to the lower part. A bearing 6 is located between the two parts to facilitate the relative rotational movement. A lever 8 is mounted on the upper part for rotating it relative to the lower part 5. The jib section 25 is operably connected adjacent the free end of the upper part by means of a coupling plate 31. The lower part 5, is operatively connected to a base plate 9 at its lower end which in turn is securable to the support 61.

Preferably, the mast section 3 is hingedly connected to a base plate 9 by means of a hinge plate 13 which may be L-shaped in configuration and locking means in the form of a pin 15 may be provided to retain the mast in the upright p6sition.

A strut element 27 extends between the jib section and the upper part of the mast so as to retain the jib section in the extended position. As shown, a plurality of strut mounting members 10, 12 are provided on the upper part of the mast section so that the jib section can adopt a plurality of extended in use positions.

Mounting means for a winch 50 may be provided on the lower part of the mast section such mounting B means being in the form of a support plate 11 upon which the winch can be disposed. Preferably, the winch line 51 is arranged so that it passes through aperture 19 ih the mast section and along the jib section by a suitable arrangement of pulleys 29 shown by way of example only.

1~I r- i L 5 The stabilizer as shown, comprises a support leg 37 having a foot plate 38 at one end thereof and a mounting arm 39 which is adjustably movable alonc the length of the support leg, the free end of the mounting arm being receivable in a mounting bracket 21 which is preferably disposed on the base plate 9 of the lifting device.

When in the upright aperture position a locating plate 17 is receivable by a restraining member comprising two parallel discs 41 which are spaced apart to define a slot therebetween. The plate 17 is receivable within the slot to provide additional stability.

*r I til 11(1 I I1 C I

Claims

6- THE CLAIMS DEFINING THE INVENTION ARE AS FOLLOWS: i. A lifting device for a vehicle comprising a mast section having a longitudinal axis said mast section having one end disposed adjacent a support surface on the vehicle said one end of said mast section being pivotally connected to a base so as to be movable between an operative position 4 in which the longitudinal axis of the mast section is generally upright and a stowed position in which the longitudinal axis thereof is generally horizontal or S substantially inclined with respect to the disposition of the longitudinal axis in the operative position, the device aoo further including a jib section having a longitudinal axis one end of said jib section being pivotally mounted to said mast section so as to be capable of pivotal movement between a first operative position in which the longitudinal axis of said jib section extends transversely of the longitudinal axis of said mast section and a second position in which the the jib section is disposed along side said mast section o with their longitudinal axes extending generally in the same direction, the lifting device further including a strut member having one end pivotally connected to one of said mast section or said jib section, the other end being S releasably connectible to the other of said mast or jib Ssections so as to be capable of supporting said jib section in said first position and releasable so that when the jib section is in the said second position, and said mast section is in said stowed position said strut member is disposed generally along side and extends generally in the same direction as that of the mast section and the jib section. 2. A lifting device according to claim 1 wherein said mast section comprises an upper part and a lower part, said parts being rotatably relative to one another about said longitudinal axis and said jib section being operatively connected adjacent the free end portion of said upper part. S 0 6809,AR SSPEC.O41,60724c1, 7 3. A lifting device according to any preceding claim wherein said base comprises a base plate which, in use, is secured to or rests upon the support surface said one end of said mast section including a bIinge plate which is hingedly connected to said base plate. 4. A lifting device according to any preceding claim including locking means for retaining said mast section in said upright operative position. 5. A lifting device according to any preceding claim S wherein said strut member is capable of selective disposition so that the Jib section can adopt one or more f operative positions including said first operative position relative to said mast section. 6. A lifting device according to any preceding claim further including a stabilizer member which is releasably securable to a part of the lifting device said stabilizer member including a support leg which in a support position is spaced from said longitudinal axis of said mast section S to assist in supporting a load carried by the device.
7. A lifting device according to any preceding claim further including mounting means for a winch on the lower part of the mast section such mounting means being in the form of a support plate upon which the winch can be disposed, the winch line being arranged so that is passes through the mast section and along the jib section by a pulley assembly. S8. A lifting device according to claim 6 wherein said support leg has a foot plate at one end thereof and said stabilizer member further includes a mounting arm which is adjustably movable along the length of the support leg, and a free end of the mounting arm is receivable in a mounting bracket which is disposed on the base plate of the lifting '\device. S.k /900809.ARSSPEC.041, c?24cl,
8-
9. A lifting device substantially as hereinbefore described with reference to the accompanying drawings. Dated this 9th day of August, 1990. DAVIES &COLLISON Patent Attorneys for RUSSELL JOHN WILLIAMS ~4 6 4. 0~O4 0 4, 4, 4,4, 4, 0 4,4, a 0 0 4, 4,4, 44, Ii 40 4, 4, 04,0410 4, 4, 900809,ARSSPEC. 041, 60724cl,