Chassis mechanism for forklift and forklift

Abstract

The chassis mechanism comprises a left support and a right support, the left support and the right support are horizontally parallel in the front-back direction, and driving wheels are arranged in the middle of the left support and the middle of the right support respectively. The two rear ends of the connecting beam are connected to the left support and the right support respectively; the bridge plate is arranged in the middle of the connecting beam and extends in the left-right direction, and the first universal wheels are installed on the two sides of the bridge plate in the mode that one side falls down and the other side lifts up. According to the chassis mechanism provided by the utility model, the driving wheels can be prevented from being suspended.

Description

Technical Field

[0001] The utility model relates to the field of handling equipment, in particular to a chassis mechanism for a forklift and the forklift. Background Art

[0002] Forklifts are industrial handling vehicles, which refer to various wheeled handling vehicles used for loading and unloading, stacking and short-distance transportation of palletized goods. They are often used for transporting large objects in warehouses and are usually powered by fuel engines or batteries.

[0003] Among them, with the rapid development of my country's manufacturing and logistics industries, storage in automated warehouses has become a basic need in all walks of life. Reach forklifts are becoming more and more widely used due to their environmental protection and energy saving, low noise, high lifting and small working space, especially AGV forklifts.

[0004] In the process of implementing the present invention, the inventors discovered that the prior art has at least the following problems:

[0005] Generally speaking, the chassis structure of a forklift includes a left bracket and a right bracket, and corresponding driving wheels and passive wheels (such as universal wheels) are set at the bottom of the left bracket and the right bracket. The currently installed driving wheels and passive wheels are mostly fixed at a fixed height and cannot adaptively change the up and down positions according to changes in terrain, so that the driving wheels may be suspended and unable to move normally.

[0006] Therefore, a chassis mechanism for a forklift and a forklift are needed to at least partially solve the above technical problems. Utility Model Content

[0007] The embodiment of the utility model provides a chassis mechanism for a forklift and the forklift, which can prevent the driving wheel from being lifted.

[0008] In a first aspect, the present invention provides a chassis mechanism for a forklift, the chassis mechanism comprising:

[0009] A left bracket and a right bracket are parallel to each other in the front-to-back direction, wherein the left bracket and the right bracket are respectively provided with a driving wheel at a middle position;

[0010] A connecting beam at the rear, with both ends connected to the left bracket and the right bracket respectively; and

[0011] A bridge plate is arranged at the middle position of the connecting beam, and the bridge plate is constructed to extend in the left-right direction and can be installed with a first universal wheel on both sides in a manner that one side is dropped and the other side is raised.

[0012] According to the chassis mechanism of the present invention, when the chassis mechanism is traveling on a road with changing terrain conditions, the two first universal wheels of the chassis mechanism can adaptively adjust their upper and lower positions according to changes in the terrain based on the setting of the bridge plate that can move its position up and down, so that the driving wheels can maintain contact with the road surface and avoid being suspended.

[0013] In a second aspect, the present invention further provides a forklift comprising the chassis mechanism of the above technical solution.

[0014] According to the forklift of the present invention, due to the use of the chassis mechanism of the present invention, when the forklift is traveling on a road with changing terrain conditions, the two first universal wheels of the chassis mechanism can adaptively adjust their upper and lower positions according to the terrain changes, so that the drive wheels can maintain contact with the road surface and avoid being suspended.

[0015] Additional advantages, purposes, and features of the present invention will be partially set forth in the following description and will partially become apparent to those skilled in the art after studying the following or may be learned from practice of the present invention. The purposes and other advantages of the present invention may be achieved and obtained by the structures specifically pointed out in the specification and drawings.

[0016] Those skilled in the art will understand that the purposes and advantages that can be achieved by the present invention are not limited to those specifically described above, and the above and other purposes that can be achieved by the present invention will be more clearly understood based on the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are intended to provide a further understanding of the present invention, constitute a part of this application, and do not constitute a limitation of the present invention. The components in the drawings are not drawn to scale, but are merely for the purpose of illustrating the principles of the present invention. To facilitate the illustration and description of some parts of the present invention, the corresponding parts in the drawings may be enlarged, that is, they may be larger than other components in the exemplary device actually manufactured according to the present invention. In the drawings:

[0018] Figure 1 Schematic diagram of a chassis mechanism according to an embodiment of the present utility model;

[0019] Figure 2 for Figure 1 A schematic diagram of the chassis mechanism shown from another angle; and

[0020] Figure 3 Schematic diagram of the connection between the first universal wheel and the rotating connection mechanism in the chassis mechanism according to one embodiment of the present utility model.

[0021] Description of reference numerals:

[0022] 100: chassis mechanism;

[0023] 111: left bracket;

[0024] 112: right bracket;

[0025] 113: driving wheel;

[0026] 114: second universal wheel;

[0027] 120: connecting beam;

[0028] 121: top plate;

[0029] 122: rear side panel;

[0030] 123: perforation;

[0031] 130: bridge plate;

[0032] 131: first connecting plate;

[0033] 132: Mounting plate;

[0034] 141: pivot axis;

[0035] 142: second connecting plate;

[0036] 143: vertical board;

[0037] 150: first universal wheel;

[0038] 160: Anti-collision bar. DETAILED DESCRIPTION

[0039] The objectives and functions of the present invention, as well as methods for achieving these objectives and functions, will be clarified with reference to exemplary embodiments. However, the present invention is not limited to the exemplary embodiments disclosed below; it can be implemented in various forms. The essence of this specification is merely to help those skilled in the relevant art to comprehensively understand the specific details of the present invention.

[0040] It should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0041] Ordinal numbers such as "first" and "second" cited in the present invention are merely identifiers and do not have any other meanings, such as a specific order, etc. Moreover, for example, the term "first component" itself does not imply the existence of a "second component", and the term "second component" itself does not imply the existence of a "first component".

[0042] It should be noted that the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside" and similar expressions used in this document are for illustrative purposes only and are not limiting.

[0043] The present invention provides a chassis mechanism 100 for a forklift. The chassis mechanism 100 can be applied to, for example, the field of handling equipment, such as a reach forklift, and can solve the problem of the existing forklift chassis mechanism having a driving wheel that may be suspended.

[0044] First, when the chassis mechanism 100 is in operation, the side closer to the object to be transported is the front, and the other side relatively far away from the object to be transported is the rear. At the same time, based on facing forward, the left side is the left, and the right side is the right.

[0045] The present invention provides a chassis mechanism 100 for a forklift. In a preferred embodiment, Figure 1 As shown, Figure 1 FIG1 is a schematic diagram of a chassis mechanism 100 according to an embodiment of the present invention. The chassis mechanism 100 may include a left bracket 111 , a right bracket 112 , a connecting beam 120 and a bridge plate 130 .

[0046] The left and right brackets 111 and 112 serve as the existing forklift infrastructure, housing drive wheels 113. A connecting beam 120, serving as the pivot connecting the left and right brackets 111 and 112, is used to mount a bridge plate 130. Bridge plate 130 is used to mount first universal wheels 150 at either end, enabling adaptive adjustment of the vertical position of the two universal wheels.

[0047] Specifically, the left and right brackets 111, 112 are located at the bottom of the forklift. They are parallel to each other and are arranged horizontally along the front-to-back direction, that is, along the length of the left and right brackets 111, 112. Drive wheels 113 are located at the center of the bottom of each bracket.

[0048] The connecting beam 120 has two ends connected to the left bracket 111 and the right bracket 112 respectively, and is located at a rear position relative to the left bracket 111 and the right bracket 112 .

[0049] The bridge plate 130 is positioned in the middle of the connecting beam 120. The bridge plate 130 extends horizontally. The bridge plate 130 can move up and down, with one side lowered and the other side raised. First universal wheels 150 are mounted on each side of the bridge plate 130.

[0050] Among them reference Figure 3 The bridge plate 130 may include a first connecting plate 131 that is horizontally arranged and connected to each other and a mounting plate 132 located at the left and right ends of the first connecting plate 131. A first universal wheel 150 is respectively installed at the bottom of the two mounting plates 132.

[0051] The first connecting plate 131 may be rotatably connected to the connecting beam 120 via a horizontal pivot shaft 141. In addition, the width of the first connecting plate 131 may be smaller than that of the mounting plate 132 in the front-to-rear direction.

[0052] According to the chassis mechanism 100 of the present invention, when the chassis mechanism 100 is traveling on a road with changing terrain conditions, the two first universal wheels 150 of the chassis mechanism 100 can adaptively adjust their upper and lower positions according to the terrain changes, so that the driving wheel 113 can maintain contact with the road surface and avoid being suspended.

[0053] refer to Figure 3 The chassis mechanism 100 may further include a rotational connection mechanism provided to the connecting beam 120, which is rotationally connected to the first connecting plate 131 via a horizontal pivot shaft 141, so that the bridge plate 130 can be lowered on one side and raised on the other side. The rotational connection mechanism may include a second connecting plate 142 and two vertical plates 143.

[0054] Specifically, a horizontally arranged second connecting plate 142 is fixed to the connecting beam 120. Two vertical plates 143 are disposed on the second connecting plate 142, respectively located in front and rear of the first connecting plate 131. A pivot shaft 141 is rotatably connected to the two vertical plates 143 and the first connecting plate 131, thereby achieving a freely rotatable connection between the first connecting plate 131 and the vertical plates 143 (a rotational connection mechanism). A certain distance is maintained between the second connecting plate 142 and the first connecting plate 131 so that the first connecting plate 131 does not interfere with the second connecting plate 142 when moving up and down.

[0055] refer to Figure 2 The left bracket 111 and the right bracket 112 can also be provided with a second universal wheel 114 in front of their respective driving wheels 113 to facilitate better movement of the chassis mechanism.

[0056] The specific form of the connecting beam 120 is not limited. Preferably, the connecting beam 120 can be a three-dimensional plate-frame structure with an open bottom, formed by a top plate 121 and rear side plates 122. This open-bottom connecting beam 120 facilitates the installation of the first universal wheel 150, the bridge plate 130, and the rotating connection mechanism, while also providing ample space for the first universal wheel 150 and the bridge plate 130 to maneuver. The second connecting plate 142 can be fixed to the bottom surface of the top plate 121.

[0057] In addition, the top plate 121 of the connecting beam 120 may be provided with perforations 123 at positions corresponding to the left bracket 111 and the right bracket 112 for cable entry and exit. The rear side plate 122 of the connecting beam 120 may also be provided with anti-collision strips 160 extending in the left and right directions for protection.

[0058] In summary, according to the chassis mechanism 100 of the present invention, the two first universal wheels 150 of the chassis mechanism 100, based on the vertically movable arrangement of the bridge plate 130, can also adaptively adjust their vertical positions according to changes in terrain, allowing the drive wheel 113 to maintain contact with the road surface and avoid being suspended. Furthermore, the bridge plate 130 and the rotational connection mechanism used to achieve the adaptive vertical adjustment of the two first universal wheels 150 are simple in structure, easy to manufacture, and low in cost.

[0059] On the other hand, the present invention further provides a forklift (not shown), which includes the chassis mechanism 100 of the above embodiment and a mast (not shown) disposed between the left bracket 111 and the right bracket 112. Therefore, the forklift according to the present invention includes all the features and effects of the chassis mechanism 100 according to the present invention.

[0060] Furthermore, the forklift's mast is movable forward and backward relative to the left and right brackets 111 and 112, meaning the forklift is a reach truck. In this case, the connecting beam 120 can be raised a certain height relative to the left and right brackets 111 and 112, so that the connection between the connecting beam 120 and the left and right brackets 111 and 112 forms a stepped structure, which acts as a stopper to prevent the mast from moving backward.

[0061] In combination with the description and practice of the utility model disclosed herein, other embodiments of the utility model are easy to think of and understand for those skilled in the art. The description and embodiments are considered to be exemplary only, and the true scope and spirit of the utility model are defined by the claims.

Claims

1. A chassis mechanism for a forklift, characterized in that: The chassis mechanism comprises: A left bracket and a right bracket are parallel to each other in the front-to-back direction, wherein the left bracket and the right bracket are respectively provided with a driving wheel at a middle position; A connecting beam at the rear, with both ends connected to the left bracket and the right bracket respectively; and A bridge plate is arranged at the middle position of the connecting beam, and the bridge plate is constructed to extend in the left-right direction and can be installed with a first universal wheel on both sides in a manner that one side is dropped and the other side is raised.

2. The chassis structure according to claim 1, characterized in that: The bridge plate includes horizontally arranged first connecting plates connected to each other and mounting plates located at both ends of the first connecting plates; Wherein, the mounting plate is connected to the first universal wheel.

3. The chassis structure according to claim 2, characterized in that: The chassis mechanism further comprises a rotation connection mechanism provided to the connection beam, which is rotationally connected to the first connection plate via a horizontal pivot axis so that the bridge plate can be lowered on one side and raised on the other side.

4. The chassis structure according to claim 3, characterized in that: The rotating connection mechanism comprises: a second horizontal connecting plate secured to the connecting beam; two vertical plates provided to the second connecting plate and located respectively in front and rear of the first connecting plate, the pivot shaft being rotatably connected to the two vertical plates and the first connecting plate; Wherein, there is a certain distance between the second connecting plate and the first connecting plate.

5. The chassis structure according to claim 1, characterized in that: The left bracket and the right bracket are also respectively provided with a second universal wheel in front of their respective driving wheels.

6. The chassis structure according to claim 4, characterized in that: The connecting beam is a three-dimensional plate frame structure with an open bottom formed by a top plate and rear side plates, and the second connecting plate is fixedly connected to the bottom surface of the top plate.

7. The chassis structure according to claim 6, characterized in that: The top plate of the connecting beam is further provided with holes at positions corresponding to the left bracket and the right bracket for cables to enter and exit; and / or The rear side plate of the connecting beam is further provided with an anti-collision strip extending in the left-right direction.

8. A forklift, characterized in that: It comprises the chassis mechanism according to any one of claims 1 to 7 and a door frame arranged between the left bracket and the right bracket.

9. The forklift according to claim 8, characterized in that The door frame is configured to be movable forward and backward relative to the left bracket and the right bracket; Wherein, the connecting beam is constructed to protrude upward by a certain height relative to the left bracket and the right bracket.

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