CN113830706A

CN113830706A - Lift truck suspension arm structure and lift truck thereof

Info

Publication number: CN113830706A
Application number: CN202010586306.5A
Authority: CN
Inventors: 陈健; 梁任; 吴亚良; 蔡婷
Original assignee: Shanghai Baosight Software Co Ltd
Current assignee: Shanghai Baosight Software Co Ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2021-12-24

Abstract

The invention provides a lift truck boom structure in the technical field of lift trucks, which comprises a gantry, a boom, a fork tooth device and a base, wherein the gantry is arranged on the base; the portal comprises upright columns and a cross beam, the bottom ends of the two upright columns are fixedly connected to the base, and the two ends of the cross beam are respectively connected to the top ends of the two upright columns; the fork tooth device comprises fork teeth and an undercarriage, the fork teeth are fixedly connected with the undercarriage, the fork teeth and the base are respectively positioned on two sides of the upright post, and the undercarriage is connected between the two upright posts in a sliding manner; the suspension arm is connected to the cross beam in a sliding mode, a lifting hook is arranged at the end portion of the suspension arm, and the distance between the lifting hook and the cross beam is adjustable. The invention is improved on the basis of the existing general lifting forklift, realizes the full-flow operation of unpacking, lifting and installing the cabinet type high-power frequency converter on the same operating device without traveling crane lifting, reduces the requirement of the operating environment, reduces the number of the participated workers and improves the working efficiency.

Description

Lift truck suspension arm structure and lift truck thereof

Technical Field

The invention relates to lifting equipment, in particular to a lifting vehicle boom structure and a lifting vehicle thereof, and particularly relates to a boom structure of a multipurpose trolley for installing and maintaining a cabinet type high-power rectifying device and a motor frequency conversion module.

Background

At present, the installation operation flow of each series of cabinet type high-power frequency converters of each brand is that the frequency converters need to be lifted by a crane after transportation and disassembled, and the frequency converters are lifted by the crane to the existing lift truck during installation, and are pushed into an electrical cabinet by a fork to be installed and fixed. The device has high dependence on the traveling crane, strict requirements on the operating environment, need to switch operating appliances, complicated operation steps, long working hours, and also needs to be matched with different work types to operate, thereby influencing the operating efficiency.

Through the search of the prior art, Chinese patent publication No. CN105439043A discloses a manual carrying vehicle, relating to the field of carrying instruments. The manual carrying vehicle comprises a base, a portal frame, a hydraulic mechanism and a lifting mechanism; the base is provided with traveling wheels, and the portal is connected with the base; the hydraulic mechanism comprises a hydraulic cylinder, a handle and a pedal, the handle and the pedal are arranged on the hydraulic cylinder, a movable rod is arranged at the upper end of the hydraulic cylinder, the handle and the pedal are used for controlling the movable rod to lift, and the bottom of the hydraulic cylinder is connected with the base; elevating system includes crane, spacing and pivot, crane and portal sliding connection to be connected with the movable rod transmission, spacing includes horizontal gag lever post and vertical gag lever post, and the both ends of horizontal gag lever post are rotated with the crane and are connected, and the top of vertical gag lever post is provided with the locking bayonet socket, still is provided with the staple bolt structure on the vertical gag lever post, and the rotatable spacing rotation of drive of pivot is provided with the runner in the pivot. The manual carrier provided by the invention can realize very convenient carrying of goods, but the disassembly of external packages of goods and the like can not be realized.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a lifting arm structure of a lift truck and the lift truck with the lifting arm structure.

The lifting arm structure of the lift truck comprises a portal frame, a lifting arm, a fork tooth device and a base;

the portal comprises upright columns and a cross beam, the bottom ends of the two upright columns are fixedly connected to the base, and the two ends of the cross beam are respectively connected to the top ends of the two upright columns;

the fork tooth device comprises fork teeth and a landing gear, the fork teeth are fixedly connected with the landing gear, the fork teeth and a base are respectively positioned on two sides of the upright posts, and the landing gear is connected between the two upright posts in a sliding manner;

the suspension arm is connected to the cross beam in a sliding mode, a lifting hook is arranged at the end portion of the suspension arm, and the distance between the lifting hook and the cross beam is adjustable.

In some embodiments, the beam is fixedly connected with a sleeve, and the suspension arm is slidably connected in the sleeve.

In some embodiments, the sleeve is a triangular sleeve, a rectangular sleeve, a trapezoidal sleeve, a polygonal sleeve, or a cylindrical sleeve.

In some embodiments, the cross beam is a trapezoidal or curved plate.

In some embodiments, the boom is provided with a sling graduation mark.

In some embodiments, a tray is also included, the tray including a bracket and a rim, the tines being connected to the bracket.

In some embodiments, two of the side frames are telescopically connected to both sides of the bracket.

The invention also provides a lift truck, which comprises the lift truck boom structure.

Compared with the prior art, the invention has the following beneficial effects:

1. the invention is improved on the basis of the existing general lifting forklift, realizes the full-flow operation of unpacking, lifting and installing the cabinet type high-power frequency converter on the same operating device without traveling crane lifting, reduces the requirement of the operating environment, reduces the number of the participated workers and improves the working efficiency.

2. The adjustable bottom tray is configured, so that the adjustable bottom tray can be adapted to a plurality of commonly used type frequency converters of different brands and different series, and the installation operation is firmer, firmer and more convenient.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic view of a boom structure of a lift truck according to the present invention.

FIG. 2 is a schematic diagram of the lift truck boom structure in an inclined state according to the present invention;

FIG. 3 is a schematic view of a pallet configuration for the boom of the lift truck of the present invention;

fig. 4 is a schematic view of the overall structure of the lift truck of the present invention.

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.

Example 1

As shown in fig. 1-4, the present invention provides a lift truck boom structure, which comprises a mast 1, a boom 2, a fork tine apparatus 3, and a base 4. The base 4 serves as a mounting support platform for the mast 1, while the base 4 also serves to accommodate a corresponding load for balancing the operation of the tine assembly 3. The gantry 1 comprises upright columns 11 and a cross beam 12, wherein the cross beam 12 is connected to the top ends of the two upright columns 11, the bottom ends of the two upright columns 11 are respectively connected to the base 4, and the upright columns 11 are located on the position, close to the edge, of one side face of the base 4. The tine arrangement 3 includes tines 30 and landing gear 31. The undercarriage 31 is slidably connected at both ends to the two uprights 11, and the undercarriage 31 can be raised or lowered along the two uprights 11 by hydraulic means. The fork teeth 30 are of an L-shaped structure, one end of each fork tooth is fixedly connected with the undercarriage 31, and the fixedly connected mode can be sleeve clamping, welding and the like. The tines 30 are mounted on opposite sides of the mast 11 with the base 4.

The beam 12 is connected with a suspension arm 2, and the suspension arm 2 is used for static bearing. The end of the boom 2 is provided with a hook 20, the hook 20 being located above the tines 30. The boom 2 is connected to the beam 12 in a sliding manner, and the boom 2 is moved back and forth along the cross section of the beam 12 so that the hook 20 is displaced relative to the beam 12, either away from or towards. The boom 2 is telescopic relative to the beam 12, the projecting amount is determined according to the weight of the object to be lifted, and the hook 20 is used for hooking and bearing the object to be lifted.

The invention is improved on the basis of the existing general lifting forklift, realizes the full-flow operation of unpacking, lifting and installing the cabinet type high-power frequency converter on the same operating device without traveling crane lifting, reduces the requirement of the operating environment, reduces the number of the participated workers and improves the working efficiency.

Preferably, the beam 12 is provided with a sleeve 121, and the boom 2 is slidably connected in the sleeve 121, so that the boom 2 can be conveniently connected and moved. The boom 2 is moved in the axial direction of the sleeve 121 so that the hook 20 is displaced relative to the beam 12. The sleeve 121 may be in various structures, and may be any one of a triangular sleeve, a rectangular sleeve, a trapezoidal sleeve, a polygonal sleeve, or a cylindrical sleeve. Preferably, the sleeve 121 is provided with a jack, and the suspension arm 2 is provided with a groove, so that the positions of the suspension arm 2 and the sleeve 121 can be fixed through a bolt. The sleeve 1121 may be provided with a single insertion hole, and the suspension arm 2 may be provided with grooves side by side. The jack on the davit 2 is the groove structure, does not set up the form of through-hole and can ensure the bearing capacity of davit 2.

Further, the structural form of the cross beam 12 is selected to be a plate structure, and the structural shape of the cross beam 12 of the plate structure is preferably trapezoidal or arc-shaped. The crossbeam 12 with a trapezoid structure or an arc structure can increase the axial length of the sleeve 121 connected to the crossbeam 12, and increase the upper limit value of the static bearing weight of the boom 2 while ensuring that the sleeve 121 and the crossbeam 12 are connected more firmly.

Still further, a crane weight scale mark is arranged on the crane arm 2, and the scale mark is used for displaying the weight range which can be borne by the crane arm 2. The arrangement of the scale marks of the hoisting weight on the hoisting arm 2 is more convenient for field personnel to operate, the hoisted weight is ensured to be in a bearing range, and the safety is improved.

Example 2

As shown in fig. 1-4, the present embodiment 2 is formed based on embodiment 1, and improves the stability of the load and the adaptation range of the load by adding the tray connected with the fork tine device.

The fork tines 30 are connected to a tray 5, the tray 5 being mainly composed of two parts, a tray 51 and a rim 52. The bracket 51 is a main bearing frame structure of a herringbone structure consisting of a supporting rod 510 and a connecting cylinder 511, and the fork teeth 30 are connected to the lower part of the supporting rod 510. The frame 52 is a groove-shaped structure, and two side walls of the frame 52 of the groove-shaped structure extend into the connecting cylinder 511 to realize telescopic connection. The frames 52 connected to both sides of the bracket 51 can increase or reduce the transverse length of the tray in a telescopic manner, and can be adapted to a plurality of commonly used type frequency converters of different brands and different series, so that the installation operation is more firm, stable and convenient.

The tray that embodiment 2 provided is adjustable tray, and the preferred 3mm galvanized sheet that adopts makes, joins in marriage unilateral fixed frame on, and the frame is adjustable about the another side is to the converter lower margin size of various brand models of adaptation. The tray is convenient to carry, light in weight and high in strength, and is an accessory for effectively assisting the multipurpose lift truck.

Example 3

As shown in fig. 1 to 4, the present embodiment 3 is a lift truck formed based on the embodiment 1 or 2, and particularly, a multi-purpose lift truck suitable for installation and maintenance of a frequency converter, which is formed by using the lift truck boom structure of the embodiment 1 or 2.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

Claims

1. A lift truck boom structure is characterized by comprising a gantry (1), a boom (2), a fork tooth device (3) and a base (4);

the gantry (1) comprises upright columns (11) and a cross beam (12), the bottom ends of the two upright columns (11) are fixedly connected to the base (4), and the two ends of the cross beam (12) are respectively connected to the top ends of the two upright columns (11);

the fork tooth device (3) comprises fork teeth (30) and an undercarriage (31), the fork teeth (30) are fixedly connected with the undercarriage (31), the fork teeth (31) and a base (4) are respectively positioned on two sides of the upright (11), and the undercarriage (31) is connected between the two uprights (11) in a sliding manner;

the suspension arm (2) is connected to the cross beam (12) in a sliding mode, a lifting hook (20) is arranged at the end portion of the suspension arm (2), and the distance between the lifting hook (20) and the cross beam (12) is adjustable.

2. The lift car boom structure of claim 1, wherein the cross beam (12) has affixed thereto a sleeve (121), the boom (2) being slidably connected within the sleeve (121).

3. The lift car boom structure of claim 2, wherein the sleeve (121) is a triangular sleeve, a rectangular sleeve, a trapezoidal sleeve, a polygonal sleeve, or a cylindrical sleeve.

4. The lift car boom structure of claim 2, wherein the cross beam (12) is a trapezoidal or curved plate.

5. The lift car boom structure of claim 4, wherein the boom (2) is provided with a sling weight scale.

6. The lift car boom structure of claim 1, further comprising a tray (5), said tray (5) comprising a bracket (51) and a rim (52), said tines (30) being connected with said bracket (51).

7. The lift car boom structure of claim 6, wherein two of the side frames (52) are telescopically connected to either side of the bracket (51).

8. A lift truck comprising a lift truck boom structure as claimed in any of claims 1 to 7.