CN111867966A

CN111867966A - Lifting device and attachment device therefor

Info

Publication number: CN111867966A
Application number: CN202080000628.5A
Authority: CN
Inventors: 陈耀坤
Original assignee: Sh Technologies Pte Ltd
Current assignee: Sh Technologies Pte Ltd
Priority date: 2019-02-12
Filing date: 2020-02-06
Publication date: 2020-10-30
Also published as: WO2020167247A1; AU2020202503A1; TW202035269A; SG10201901217QA

Abstract

A lifting device is disclosed, comprising a carrier; a boom arranged to extend from the carrier; and an attachment device arranged to be attached to the boom, wherein the attachment device comprises a frame, a first member arranged to extend from the frame, and a second member arranged to protrude from an end of the first member in one of the following configurations: -a front end and a side end.

Description

Lifting device and attachment device therefor

Technical Field

The present disclosure relates to a lifting device and an attachment device for the lifting device.

Background

The following discussion of the background to the invention is intended to facilitate an understanding of the present invention only. It should be appreciated that the discussion is not an acknowledgement or admission that any of the material referred to was published, known or part of the common general knowledge of a person skilled in the art in any jurisdiction before the priority date of the invention.

A lifting device has been proposed which uses attachment means, such as hooks, to carry objects (US 2009/0277857 a 1). The hook is arranged to have a curved shape and to protrude toward the rear of the lifting device. In using the lifting device, the lifting device is controlled such that (i) the hook needs to be adjusted to be positioned relatively forward in the direction of travel of the lifting device, and (ii) the hook is then moved backwards to catch/hook/engage the object.

This conventional arrangement requires excessive movement of the lifting device prior to lifting the object, in part due to the fact that the hook projects towards the rear of the lifting device.

There is a need to alleviate at least one of the above problems.

Disclosure of Invention

The present invention seeks to solve and/or ameliorate problems in the prior art by providing a lifting device.

Throughout this document, unless indicated to the contrary, the terms "comprising", "consisting of … …", "having", and the like are to be construed as non-exhaustive or in other words in the sense "including, but not limited to".

Furthermore, throughout this document, unless the context requires otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated integer or group of integers but not the exclusion of any other integer or group of integers.

According to one aspect, there is an attachment device for use with a lifting device, the attachment device comprising at least one engagement member, the at least one engagement member comprising an engagement connector; a first member arranged to extend from the engagement connection; and a second member arranged to protrude from an end of the first member in one of the following configurations: -a front end and a side end.

In some embodiments, the first member is pivotably coupled to the engagement link and is movable between a first position substantially parallel to a surface of the engagement link and a second position substantially perpendicular to the surface of the engagement link.

In some embodiments, the first member includes a first portion and a second portion disposed at opposite ends of the joint connection.

In some embodiments, the second member includes a first protrusion and a second protrusion, each protruding from a side end of the first portion and the second portion, respectively, the first protrusion and the second protrusion being in substantially the same direction relative to each other.

According to another aspect, there is a lifting device for handling components, the lifting device comprising: a carrier; a boom arranged to extend from the carrier; and an attachment device arranged to be attached to the boom, wherein the attachment device comprises a joint connection, a first member arranged to extend from the joint connection, and a second member arranged to protrude from an end of the first member in one of the following configurations: -a front end and a side end.

In some embodiments, the second member includes a first protrusion and a second protrusion, each protruding from a lateral end of the first portion and the second portion, respectively, the first protrusion and the second protrusion being in substantially the same direction relative to each other.

In some embodiments, there is a lifting device for handling parts, the lifting device comprising: a carrier; a boom extending upwardly from the carrier in a direction of travel of the carrier.

In some embodiments, the lifting device is a hoist (lifter), a crane (crane), a lift truck (lift truck), a reach stacker, or a forklift (forklifts).

Drawings

In the accompanying drawings which illustrate embodiments of the invention by way of non-limiting example only,

fig. 1 is a side view of a lifting device 100 according to a first embodiment of the invention.

Fig. 2a is a perspective view of an attachment device 21 according to a first embodiment of the invention.

Fig. 2b is a perspective view of the attachment device 21 according to the first embodiment of the invention.

Fig. 3 is a schematic view of a lifting device 100 according to a first embodiment of the invention.

Fig. 4 is one example of the operation of the lifting device 100.

Fig. 5 is a perspective view of a lifting device 200 according to a second embodiment of the present invention.

Fig. 6 is a perspective view of a lifting device 200 according to a second embodiment of the present invention.

Detailed Description

The invention may be adapted to assemble and/or install at least one component at a determined location (e.g. a construction site) to form a structure. The present invention discloses a novel lifting device (e.g., a front trolley) and a novel attachment device for the lifting device.

Throughout the specification, the term "component" or "pre-assembled component" may refer to a plurality of pre-fabricated components as an assembly of larger components.

Throughout the specification, the term "substantially perpendicular" may encompass deviations of up to 10 degrees, i.e. 80 to 100 degrees.

Throughout the specification, the term "substantially parallel" may encompass deviations of up to 5 degrees, i.e., -5 to +5 degrees.

Unless defined otherwise, all other technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the subject matter herein belongs.

In one aspect, there is an attachment device for use with a lifting device, the attachment device comprising at least one engagement member, the at least one engagement member comprising: a frame; a first member arranged to extend from the frame; and a second part arranged to protrude from an end of the first member in one of the following configurations: -a front end and a side end.

In another aspect, there is a lifting device for handling parts, the lifting device comprising: a carrier; a boom arranged to extend from the carrier; and an attachment device arranged to be attached to the boom, wherein the attachment device comprises a frame, a first member arranged to extend from the frame, and a second member arranged to protrude from an end of the first member in one of the following configurations: -a front end and a side end.

Lifting device 100

Fig. 1 is a side view of a lifting device 100 according to a first embodiment of the present disclosure. The lifting device 100 comprises a carrier 1 and a boom 11. The lifting device 100 may further comprise an attachment device 21. The lifting device 100 is, for example, a reach stacker (reachspicker).

The carriage 1 includes a controller (not shown) and four wheels 1 a. The controller controls, for example, the wheels 1a and the boom 11 according to the operator's instructions. The wheels 1a can be controlled when the carriage 1 is required to access a part to be handled, for example the part 500. The boom 11 can be rotated, extended and retracted clockwise and counterclockwise in a side view of the boom 11.

The boom 11 extends upwards from the carrier 1 in the travelling direction of the carrier 1 and attaches an attachment device 21 thereto. Details of the attachment means 21 will be described with reference to fig. 2a and 2 b.

Fig. 2a is a perspective view of the attachment means 21. Fig. 2b is a perspective view of the attachment means 21. As shown in fig. 2a, the attachment device 21 comprises and engages a member 24 and is arranged to be attached to the front end of the boom 11, for example. The attachment device 21 may further include an interface and a connecting member 23. The joint connection may be in the form of a frame 22.

The frame 22 is attached to the front end of the boom 11, and is arranged to have a rectangular shape in a plan view of the attachment device 21. The frame 22 includes four

sections

22a, 22b, 22c and 22 d. The

portions

22a, 22b face each other and extend in the forward direction of the lifting device 100 with the attachment device 21 attached to the boom 11. The

portions

22c, 22d face each other and extend in the width direction of the lifting device 100 with the attachment device 21 attached to the boom 11. The portion 22c may be connected with the portion 22d via a connecting member 23.

The connecting member 23 extends in the forward direction of the lifting device 100 with the attachment device 21 attached to the boom 11. The connecting member 23 may extend in the same direction as the

portions

22a, 22 b. The connecting member 23 has a shaft 23a so that the engaging member 24 is pivotable.

The joint member 24 includes a first member 24a and a second member 24b, and is arranged to have an L-shaped structure in a side view of the lifting device 100 with the attachment device 21 attached to the boom 11, for example. The first member 24a is arranged to extend from the front end of the boom 11 or from the connecting member 23 in a certain direction (e.g., toward the direction of gravity), for example. The first member 24a is pivotably coupled to the frame 22 and is movable between a first position generally parallel to a surface of the frame 22 and a second position generally perpendicular to the surface of the frame 22. The second member 24b is arranged to protrude from the end of the first member 24a in one of the following configurations: -a front end and a side end.

The second member 24b is arranged to protrude in the forward direction of the lifting device 100. The first member 24a is provided separately from the second member 24b, for example.

The engagement member 24 extends in the direction of gravity during use of the lifting device 100, for example as shown in fig. 2a (second direction), whereas the engagement member 24 extends laterally during storage of the attachment device 21, for example as shown in fig. 2b (first position). The engaging member 24 pivots in the width direction in a range of-90 degrees to 90 degrees with respect to the direction of gravity, for example.

For example, once the attachment device 21 is being detached from the boom 11, the operator may rotate the engagement member 24 to move the engagement member 24 from the position shown in FIG. 2a to the lower surface of the portion 22a or the portion 22b as shown in FIG. 2b, thus enabling the attachment device 21 to be stored in a smaller space.

Component 500

The component 500 is part of a component, for example, for use at a determined location (e.g., a construction site), and is, for example, one of a plurality of components (e.g., prefabricated or pre-assembled components) to be handled. Fig. 3 is a schematic view of a lifting device 100 according to a first embodiment of the present disclosure.

As shown in fig. 3, the component 500 is, for example, grid-shaped, and has a plurality of openings 500a, each opening 500a being arranged to have a shape that receives the second member 24 b.

Example of operation when using the lifting device 100

The wheel 1a and the boom 11 can be controlled such that the second member 24b is opposite one of the openings 500a and spaced from the component 500 by a determined distance. Thereafter, the wheel 1a is controlled to insert the second member 24b into one of the openings 500a, thereby making it possible to reduce the time required to carry the component 500.

Advantageous effects

In the case where the second member 24b protrudes in the forward direction of the lifting device 100, the operator can reduce the amount of time required to carry the component 500, as compared to the case where the second member 24b protrudes toward the rear of the lifting device 100.

Furthermore, the connecting member 23 having the shaft 23a can store the attachment device 21 with less space, because the engaging member 24 is pivotable about the shaft 23a and thus positioned to store the attachment device 21 as shown in fig. 2 b.

Possible variants

It should be noted that the lifting device 100 is not limited to a front-facing trolley, and may include a conventional hoist, crane, lift truck, or forklift.

It should be noted that in some embodiments, the frame 22 and the connecting member 23 may not be optional components and thus may be omitted. For example, the frame 22 may be replaced by other engagement connectors suitable for engaging different types of lifting devices 100.

It should be noted that although the first member 24a is provided separately from the second member 24b in the first embodiment, it is not limited to this configuration. In some embodiments, first member 24a may be integral with second member 24b, thereby facilitating high durability of engaging member 24.

It should be noted that the shaft 23a may have a structure (e.g., a lock) that prevents the engagement member 24 from rotating, thereby preventing the part 500 from falling off the lifting device 100 when the part 500 is carried. Once attachment device 21 is detached from boom 11, an operator may rotate engagement member 24 to store component 500 in a smaller space.

It should be noted that the shape of the frame 22 is not limited to a rectangle, and may be determined as the shape of the boom 11.

It should be noted that the number of engagement members is not limited to one, and may be two or more, particularly for the lifting component 500 shown in fig. 4.

Fig. 4 is one example of the operation of the lifting device 100. Assuming that the part 500 is placed on the ground such that one side of the part 500 is opposite to the ground, the operator may not lift the part 500, as shown in fig. 4. In view of the above, in order to ensure that the lifting device 100 is able to handle components (e.g. elongated components), the attachment device 21 may comprise two or more engagement members. Examples of such arrangements will be described with reference to fig. 5, 6.

Lifting device 200

Fig. 5 is a perspective view of a lifting device 200 according to a second embodiment of the present disclosure. Fig. 6 is a perspective view of a lifting device 200 according to a second embodiment of the present disclosure. In the second embodiment, unlike the first embodiment, the lifting device 200 includes a carrier 101 having wheels 101a, a boom 111, and an attachment device 121 having a plurality of engaging means.

As shown in fig. 5, the attachment device 121 includes

engagement members

124, 224. The attachment device 121 may further include a frame 122. The frame 122 includes four

portions

122a, 122b, 122c, and 122 d. The

portions

122a, 22b face each other and extend in the forward direction of the lifting device 200 with the attachment device 121 attached to the boom 111. The portions 122c, 122d face each other and extend in the width direction of the lifting device 200 with the attachment device 121 attached to the boom 111. Portion 122c may be connected to portion 22d via connecting member 123. The engaging member 124 is spaced apart from the engaging member 224 by a determined distance in the width direction of the lifting device 200.

The engaging member 124 has a first member 124a, a second member 124b (first projection), and a hook 124c (second projection). A first member 124a extends from a lower surface of the portion 122 a. The engaging member 224 has a first member 224a, a second member 224b (first projection), and a hook 224c (second projection). The first member 224a extends from the lower surface of the portion 122 b.

The second member 124b and the hook 124c protrude from the side end of the first member 124, and the second member 124b and the hook 124c are in substantially the same direction with respect to each other. The second member 224b and the hook 224c protrude from the side end of the second member 224b, and the second member 224b and the hook 224c are in substantially the same direction with respect to each other.

The first members 124a, 224a are arranged to extend from the front end or frame 122 of the boom 111 in a direction (e.g., towards the direction of gravity). The

second members

124b, 224b protrude in the width direction (e.g., rightward in fig. 5).

Hooks

124c, 224c project upwardly from the upper surfaces of

second members

124b, 224b, respectively.

Component 600

The component 600 is placed on the ground such that one of the sides of the component 600 is opposite the ground. The member 600 forms curved

portions

600a, 600b protruding upwards in fig. 5, each having an opening. The curved portion 600a is for receiving the second member 124b and the hook 124 c. The curved portion 600b is for receiving the second member 224b and the hook 224 c. The bent portion 600a is spaced apart from the bent portion 600b by a certain distance in the width direction of the member 600.

Example of operation when using the lifting device 200

The wheel 101a and the boom 111 are controlled such that the

second members

124b, 224b are located to the left of the

curved portions

600a, 600b, respectively, in fig. 5. Thereafter, the wheel 1a is controlled to insert the

second members

124b, 224b into the

bent portions

600a, 600b, respectively, and then the boom 11 is controlled to lift the part 600 upward, as shown in fig. 6, so that the part 600 can be stably lifted.

Advantageous effects

With the attachment device 121 having the

engagement members

124, 224, the user can stably carry various components (e.g., an elongated structure).

In the case where the attachment device 121 has the hook 124c and the hook 224c, the component 600 is prevented from falling off the lifting device 200 when the component 600 is carried.

Attention is paid to

It should be noted that the distance between the

engagement members

124, 224 is not limited to a particular length and may be determined according to the component 600 (e.g., the distance between the

curved portions

600a, 600 b).

It should be noted that the projecting direction of the second member is not limited to the rightward direction in fig. 5, and may be the leftward direction in fig. 5 or the leftward and rightward directions in fig. 5.

It should be noted that the number of engaging members is not limited to two. For example, to ensure that lifting device 100 can handle thicker components than component 600, the attachment device may include one or more engagement members that extend from a lower surface of at least one of portions 122c and 122d in addition to

portions

122a and 122 b.

It should be noted that the attachment device 121 may have a shaft (not shown). The shafts are provided on the bottom surfaces of the

portions

122a, 122b, respectively, and are performed such that the engaging

members

124, 224 pivot in the width direction in the range of-90 degrees to 90 degrees with respect to the gravity direction, thereby enabling the attachment device 121 to be stored with a small space.

Those skilled in the art will further appreciate that variations and combinations of the above-described features, rather than substitutions or alterations, may be combined to form yet other embodiments within the intended scope of the invention.

As will be appreciated by one skilled in the art, each embodiment can be used in combination with another embodiment or embodiments.

Claims

1. An attachment device for use with a lifting device, the attachment device comprising at least one engagement member comprising

A joint connector;

a first member arranged to extend from the engagement connection; and

a second member arranged to project from an end of the first member in one of the following configurations: -a front end and a side end.

2. The attachment device of claim 1, wherein the first member is pivotably coupled to the engagement link and movable between a first position substantially parallel to a surface of the engagement link and a second position substantially perpendicular to the surface of the engagement link.

3. The attachment device of claim 1, wherein the first member includes a first portion and a second portion, the first and second portions being disposed at opposite ends of the engagement connector.

4. An attachment device according to claim 3, wherein the second member comprises first and second projections, each projecting from a side end of the first and second portions respectively, the first and second projections being in substantially the same direction relative to each other.

5. A lift device for handling parts, comprising:

a carrier;

a boom arranged to extend from the carrier; and

an attachment device arranged to be attached to the boom, wherein the attachment device comprises: a joint connector; a first member arranged to extend from the engagement connection; and a second member arranged to project from an end of the first member in one of the following configurations: -a front end and a side end.

6. The lifting device of claim 5, wherein the first member is pivotably coupled to the engagement link and movable between a first position substantially parallel to a surface of the engagement link and a second position substantially perpendicular to the surface of the engagement link.

7. A lifting device as claimed in claim 5, characterized in that the first member comprises a first part and a second part, which are arranged at opposite ends of the joint connection.

8. A lifting device as claimed in claim 7, characterized in that the second member comprises a first projection and a second projection, each projecting from a lateral end of the first part and the second part, respectively, the first projection and the second projection being in substantially the same direction relative to each other.