Electric multifunctional carrying and hoisting fork truck front telescopic supporting leg and arrangement method thereof
Patent Information
- Application Number
- CN202611065518.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-07-17
- Publication Date
- 2026-10-27
AI Technical Summary
[0003]电动平衡重叉车车身前部空间紧凑，同时需要集成电池箱体、驾驶室、脚踏操控区域、转向机构等零部件；传统旋转臂回转运动需要预留大面积圆弧避让空间，整车布置约束多，极易与电池、驾驶室结构发生干涉，难以实现紧凑型车身设计
本发明整套支腿机构全部集成收纳于驾驶室脚踏板下方，后侧依托电池箱体焊接定位，无外凸突出结构，不占用叉车前部通行与装配空间，彻底解决传统旋转臂支腿需要预留大量旋转避让空间、易与电池、驾驶室发生结构干涉的问题，完美适配电动叉车紧凑化车身设计需求；
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Figure CN122977291A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of forklift support technology, and particularly relates to a front telescopic outrigger of an electric multi-functional handling and hoisting forklift and its arrangement method. Background Technology
[0002] Most electric multi-functional pallet trucks on the market currently use a mechanical rotating arm structure for their front outriggers. This structure uses the hinged base at the front of the frame as the mounting base, and the rotating arm relies on rotational swing to extend and retract the outriggers.
[0003] Electric counterbalance forklifts have a compact front space and need to integrate components such as battery box, cab, foot control area, and steering mechanism; traditional slewing arm rotation requires a large area of arc clearance, resulting in many constraints on the overall vehicle layout and easy interference with the battery and cab structure, making it difficult to achieve a compact body design.
[0004] Meanwhile, the maximum support span of the outriggers of the rotating boom is fixed by the boom length and the hinge position, and the stroke cannot be adjusted, resulting in a limited support range. Under heavy-load lifting and lateral high-level operation conditions, the vehicle experiences a large overturning moment and insufficient anti-overturning capacity, posing a potential rollover safety hazard.
[0005] In addition, the load of the traditional rotating boom outriggers is concentrated on the root hinge pin, without a supporting reinforced load-bearing structure. The vertical pressure and lateral torque are concentrated at a single point, which can easily lead to failures such as pin wear, boom bending, and increased hinge gap during long-term heavy-duty operation, resulting in a short service life. Furthermore, the rotating boom has an outward cantilever after being folded up, which can easily be bumped and damaged in narrow alleys and construction sites, resulting in poor adaptability to traffic. Summary of the Invention
[0006] To at least partially solve the technical problems existing in the prior art, the present invention provides a front telescopic outrigger of an electric multi-functional handling and hoisting forklift and its arrangement method.
[0007] The electric multi-functional palletizing and lifting forklift of the present invention includes a front telescopic outrigger comprising an outrigger fixing housing, a horizontal hydraulic cylinder, two sets of outrigger primary movable housings, a vertical hydraulic cylinder, a foot plate, an inner longitudinal reinforcing plate, an outer longitudinal reinforcing plate, and a transverse reinforcing plate. The outrigger mounting box is a concealed embedded box structure. The outrigger mounting box is embedded under the footrest of the forklift cab, and the rear end face of the outrigger mounting box is welded and fixed to the front end face of the forklift battery box. The inner walls of the left and right sides of the outrigger fixing box are symmetrically welded and fixed with inner longitudinal reinforcing plates. Inside the outrigger fixing box, two sets of horizontally extendable outrigger primary movable boxes are symmetrically slidably installed. The horizontal hydraulic cylinder is fixedly installed inside the outrigger fixing box. The cylinder body of the horizontal hydraulic cylinder is fixedly connected to the outrigger fixing box. The extension end of the piston rod of the horizontal hydraulic cylinder is fixedly connected to the first-stage movable box of the outrigger on the corresponding side. The horizontal hydraulic cylinder is used to drive the first-stage movable box of the outrigger to extend and retract in the horizontal direction. Each set of outriggers has a vertical hydraulic cylinder fixedly installed at the bottom of the outer end of the first-level movable box. The telescopic bottom end of the vertical hydraulic cylinder is fixedly installed with a foot plate for bearing pressure and supporting the whole vehicle when it is placed on the ground. The outer longitudinal reinforcing plates are symmetrically welded and fixed to the outer walls of the left and right sides of the outrigger fixing box. Several transverse reinforcing plates are welded and fixed between the inner longitudinal reinforcing plate and the outer longitudinal reinforcing plate on the same side. The inner longitudinal reinforcing plate, the outer longitudinal reinforcing plate and the transverse reinforcing plates together form an integrated reinforced load-bearing structure, which is used to enhance the overall load-bearing and deformation resistance of the outrigger fixing box.
[0008] Furthermore, in the aforementioned electric multi-functional handling and hoisting forklift front telescopic outriggers, the inner longitudinal reinforcing plate and the outer longitudinal reinforcing plate are both arranged vertically in parallel, and the transverse reinforcing plate is horizontally overlapped and fixed between the inner longitudinal reinforcing plate and the outer longitudinal reinforcing plate. The three are integrally welded to form a box-shaped reinforced load-bearing structure.
[0009] Furthermore, in the aforementioned electric multi-functional palletizing and lifting forklift front telescopic outriggers, the outrigger fixing box adopts an embedded and hidden layout within the vehicle body, and is completely housed in the area below the foot pedal of the forklift cab. The outer edge of the outrigger fixing box does not extend beyond the outline of the forklift body, achieving a compact assembly layout without any protruding structures.
[0010] The present invention discloses a method for arranging the front telescopic outriggers of an electric multi-functional palletizing and lifting forklift, comprising the following arrangement steps: Step S1, Box Positioning and Arrangement: The outrigger fixing box is embedded in the unused area under the foot pedal of the forklift cab. The rear end face of the outrigger fixing box is welded and fixed to the front end face of the forklift battery box to complete the overall base positioning and installation. Step S2, Arrangement of inner reinforcement structure: Weld inner longitudinal reinforcement plates symmetrically on the inner walls of the left and right sides of the support leg fixing box, weld outer longitudinal reinforcement plates symmetrically on the outer walls of the left and right sides of the support leg fixing box, and weld several transverse reinforcement plates between the inner longitudinal reinforcement plates and the outer longitudinal reinforcement plates on the same side to form an integrated box-type reinforced load-bearing structure. Step S3, Horizontal telescopic mechanism arrangement: Two sets of first-stage movable boxes for the outriggers are symmetrically slidably assembled inside the outrigger fixing box. The cylinder body of the horizontal hydraulic cylinder is fixedly installed inside the outrigger fixing box. The extension and retraction end of the piston rod of the horizontal hydraulic cylinder is connected to the first-stage movable box of the corresponding outrigger to realize the horizontal telescopic drive arrangement. Step S4, Vertical support mechanism arrangement: Vertical hydraulic cylinders are vertically installed at the bottom of the outer end of the first-level movable box of each set of outriggers, and support plates are fixedly assembled at the telescopic bottom of the vertical hydraulic cylinders to complete the arrangement of the vertical lifting support structure. Step S5, Overall Storage Layout Verification: After assembly, ensure that the entire outrigger mechanism is completely stored under the foot pedal in the cab, and that the outer edge of the box does not exceed the outline of the forklift body, forming a hidden and compact layout structure.
[0011] The electric multi-functional handling and lifting forklift of the present invention has the following advantages and beneficial effects: The entire outrigger mechanism of this invention is integrated and stored under the foot pedal of the cab, and the rear side is welded and positioned by the battery box. There is no protruding structure, and it does not occupy the front passage and assembly space of the forklift. It completely solves the problem that traditional rotating arm outriggers need to reserve a lot of rotation and avoidance space and are prone to structural interference with the battery and cab. It perfectly adapts to the compact body design requirements of electric forklifts. The horizontal hydraulic cylinder drives the first-stage movable box of the outrigger to extend and retract with a large stroke. The support width can be flexibly adjusted according to the load and the work site, effectively expanding the support coverage of the whole vehicle, improving the anti-overturning ability under heavy load and high-level lateral operation conditions, and eliminating the safety hazard of lifting side rollover. The inner and outer longitudinal reinforcing plates, together with the transverse reinforcing plates, are welded to form a closed box-type load-bearing frame, which disperses the vertical load and lateral overturning torque from both inside and outside the box. This changes the traditional single-point hinge force-bearing mode of the rotating arm, avoiding box deformation, cylinder overload, structural wear and bending, extending the service life of the outrigger mechanism, and reducing later maintenance costs. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for further understanding of the embodiments of the present invention and constitute a part of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings: Figure 1 This is a schematic diagram of the front telescopic outrigger arrangement of the electric multi-functional handling and hoisting forklift of the present invention.
[0013] Explanation of reference numerals in the attached figures: 100: Forklift battery box; 1: Support legs fixing the housing; 2: Horizontal hydraulic cylinder; 3: Support legs and first-stage movable housing; 4: Vertical hydraulic cylinder; 5: Support plate; 6: Inner longitudinal reinforcing plate; 7: Outer longitudinal reinforcing plate; 8: Transverse reinforcing plate. Detailed Implementation
[0014] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.
[0015] like Figure 1 As shown, the electric multi-functional palletizing and lifting forklift of the present invention includes a front telescopic outrigger comprising an outrigger fixing housing 1, a horizontal hydraulic cylinder 2, two sets of outrigger primary movable housings 3, a vertical hydraulic cylinder 4, an outrigger plate 5, an inner longitudinal reinforcing plate 6, an outer longitudinal reinforcing plate 7, and a transverse reinforcing plate 8. The outrigger mounting box 1 is a hidden embedded box structure. The outrigger mounting box 1 is embedded under the footrest of the forklift cab, making full use of the spare space of the whole vehicle, without occupying the front working space of the forklift, without interfering with the cab control structure and battery installation structure, thus maximizing the use of space. The rear end face of the outrigger mounting box 1 is welded and fixed to the front end face of the forklift battery box 100. The inner walls of the left and right sides of the support leg fixing box 1 are symmetrically welded with inner longitudinal reinforcing plates 6. The support leg fixing box 1 has two sets of horizontally telescopic support leg first-level movable box 3 symmetrically slidably installed inside. The horizontal cylinder 2 is fixedly installed inside the outrigger fixing box 1. The cylinder body of the horizontal cylinder 2 is fixedly connected to the outrigger fixing box 1. The piston rod extension end of the horizontal cylinder 2 is fixedly connected to the corresponding side of the outrigger first-stage movable box 3. The horizontal cylinder 2 is used to drive the outrigger first-stage movable box 3 to extend and retract in the horizontal direction. Through the extension and retraction drive of the horizontal cylinder 2, the outrigger first-stage movable box 3 is driven to perform horizontal extension and retraction along the fixed box track, realizing the expansion and retraction of the overall horizontal stroke of the outrigger, breaking through the stroke limitation of traditional rotary outriggers. Each set of outriggers has a vertical hydraulic cylinder 4 fixedly installed at the bottom of the outer end of the first-level movable box 3. The telescopic bottom end of the vertical hydraulic cylinder 4 is fixedly installed with a foot plate 5 for bearing pressure on the ground and supporting the whole vehicle. The outer longitudinal reinforcing plates 7 are symmetrically welded and fixed to the outer walls of the left and right sides of the outrigger fixing box. The inner longitudinal reinforcing plates 6 and the outer longitudinal reinforcing plates 7 bidirectionally reinforce the vertical load-bearing capacity of the box in the Z direction, resisting the vertical pressure and impact load during operation. Several transverse reinforcing plates 8 are welded and fixed between the inner longitudinal reinforcing plates 6 and the outer longitudinal reinforcing plates 7 on the same side. The inner longitudinal reinforcing plates 6, the outer longitudinal reinforcing plates 7 and the transverse reinforcing plates 8 together form an integrated reinforced load-bearing structure, which is used to enhance the overall load-bearing and deformation resistance of the outrigger fixing box 1, optimize the torsional and compressive resistance of the outrigger fixing box 1 in the XY plane, and prevent the box from deforming due to overturning moment and lateral load.
[0016] Furthermore, in the front telescopic outrigger of the electric multi-functional handling and hoisting forklift of the present invention, the inner longitudinal reinforcing plate 6 and the outer longitudinal reinforcing plate 7 are both arranged vertically in parallel, and the transverse reinforcing plate 8 is transversely overlapped and fixed between the inner longitudinal reinforcing plate 6 and the outer longitudinal reinforcing plate 7. The three are integrally welded to form a box-shaped reinforced load-bearing structure.
[0017] Furthermore, in the electric multi-functional handling and hoisting forklift front telescopic outrigger of the present invention, the outrigger fixing box 1 adopts an embedded and hidden layout within the vehicle body, and is completely housed in the area below the foot pedal of the forklift cab. The outer edge of the outrigger fixing box 1 does not exceed the outline of the forklift body, achieving a compact assembly layout without protruding structures.
[0018] The present invention discloses a method for arranging the front telescopic outriggers of an electric multi-functional palletizing and lifting forklift, comprising the following arrangement steps: Step S1, Box positioning and arrangement: The outrigger fixing box 1 is embedded in the unused area under the foot pedal of the forklift cab. The rear end face of the outrigger fixing box 1 is welded and fixed to the front end face of the forklift battery box 100 to complete the overall base positioning and installation. Step S2, Arrangement of inner reinforcement structure: Weld inner longitudinal reinforcement plates 6 symmetrically on the inner walls of the left and right sides of the support leg fixing box 1, weld outer longitudinal reinforcement plates 7 symmetrically on the outer walls of the left and right sides of the support leg fixing box 1, and weld several transverse reinforcement plates 8 between the inner longitudinal reinforcement plates 6 and the outer longitudinal reinforcement plates 7 on the same side to form an integrated box-type reinforced load-bearing structure. Step S3, Horizontal telescopic mechanism arrangement: Two sets of first-stage movable boxes 3 of the outriggers are symmetrically slidably assembled inside the outrigger fixed box 1. The cylinder body of the horizontal cylinder 2 is fixedly installed inside the outrigger fixed box 1. The extension end of the piston rod of the horizontal cylinder 2 is connected to the corresponding side outrigger first-stage movable box 3 to realize the horizontal telescopic drive arrangement. Step S4, Vertical support mechanism arrangement: Vertical cylinder 4 is vertically installed at the bottom of the outer end of the first-level movable box 3 of each set of outriggers, and support plate 5 is fixedly assembled at the telescopic bottom end of the vertical cylinder 4 to complete the vertical lifting support structure arrangement. Step S5, Overall Storage Layout Verification: After assembly, ensure that the entire outrigger mechanism is completely stored under the foot pedal in the cab, and that the outer edge of the box does not exceed the outline of the forklift body, forming a hidden and compact layout structure.
[0019] Preferably, in step S2, the inner longitudinal reinforcing plate 6 and the outer longitudinal reinforcing plate 7 are arranged vertically in parallel, and the transverse reinforcing plate 8 is welded horizontally in a uniform overlapping manner; the double-layer longitudinal plates enhance the vertical load-bearing capacity of the box in the Z direction, and the transverse reinforcing plate 8 improves the torsional and compressive resistance of the box in the XY plane.
[0020] Preferably, in step S3, left and right independent horizontal hydraulic cylinders 2 are used to drive the first-stage movable housing 3 of the outriggers on both sides respectively. The two sets of movable housings can extend synchronously or extend and retract individually on one side, flexibly adjusting the support span of the whole vehicle and expanding the anti-overturning operation range.
[0021] Preferably, step S1 is embedded in the unused space under the footrest of the cab, avoiding interference areas with the battery box, cab, and main frame beam, thus maximizing the use of the limited installation space at the front of the electric counterbalance forklift.
[0022] In summary, compared with the prior art, the electric multi-functional palletizing and lifting forklift of the present invention has the following advantages and beneficial effects: the entire outrigger mechanism of the present invention is integrated and stored under the foot pedal of the cab, and the rear side is welded and positioned by the battery box. There is no outward protruding structure, and it does not occupy the front passage and assembly space of the forklift. It completely solves the problem that traditional rotating arm outriggers need to reserve a lot of rotation and avoidance space and are prone to structural interference with the battery and cab. It perfectly adapts to the compact body design requirements of electric forklifts. The horizontal hydraulic cylinder drives the first-stage movable box of the outrigger to extend and retract with a large stroke. The support width can be flexibly adjusted according to the load and the work site, effectively expanding the support coverage of the whole vehicle, improving the anti-overturning ability under heavy load and high-level lateral operation conditions, and eliminating the safety hazard of lifting side rollover. The inner and outer longitudinal reinforcing plates, together with the transverse reinforcing plates, are welded to form a closed box-type load-bearing frame, which disperses the vertical load and lateral overturning torque from both inside and outside the box. This changes the traditional single-point hinge force-bearing mode of the rotating arm, avoiding box deformation, cylinder overload, structural wear and bending, extending the service life of the outrigger mechanism, and reducing later maintenance costs.
[0023] It should be noted that, unless otherwise expressly specified and limited, the term "connection" or its synonyms should be interpreted broadly in this document. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. Furthermore, expressions such as "first" and "second" are merely used to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Meanwhile, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In addition, the terms "front," "rear," "left," "right," "upper," and "lower" in this document refer to the placement states shown in the accompanying drawings.
[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A type of electric multi-functional palletizing and lifting forklift with a telescopic front outrigger, characterized in that, The electric multi-functional palletizing and lifting forklift front telescopic outrigger includes an outrigger fixed housing, a horizontal cylinder, two sets of outrigger primary movable housings, a vertical cylinder, a foot plate, an inner longitudinal reinforcing plate, an outer longitudinal reinforcing plate, and a transverse reinforcing plate. The outrigger mounting box is a concealed embedded box structure. The outrigger mounting box is embedded under the footrest of the forklift cab, and the rear end face of the outrigger mounting box is welded and fixed to the front end face of the forklift battery box. The inner walls of the left and right sides of the outrigger fixing box are symmetrically welded and fixed with inner longitudinal reinforcing plates. Inside the outrigger fixing box, two sets of horizontally extendable outrigger primary movable boxes are symmetrically slidably installed. The horizontal hydraulic cylinder is fixedly installed inside the outrigger fixing box. The cylinder body of the horizontal hydraulic cylinder is fixedly connected to the outrigger fixing box. The extension end of the piston rod of the horizontal hydraulic cylinder is fixedly connected to the first-stage movable box of the outrigger on the corresponding side. The horizontal hydraulic cylinder is used to drive the first-stage movable box of the outrigger to extend and retract in the horizontal direction. Each set of outriggers has a vertical hydraulic cylinder fixedly installed at the bottom of the outer end of the first-level movable box. The telescopic bottom end of the vertical hydraulic cylinder is fixedly installed with a foot plate for bearing pressure and supporting the whole vehicle when it is placed on the ground. The outer longitudinal reinforcing plates are symmetrically welded and fixed to the outer walls of the left and right sides of the outrigger fixing box. Several transverse reinforcing plates are welded and fixed between the inner longitudinal reinforcing plate and the outer longitudinal reinforcing plate on the same side. The inner longitudinal reinforcing plate, the outer longitudinal reinforcing plate and the transverse reinforcing plates together form an integrated reinforced load-bearing structure, which is used to enhance the overall load-bearing and deformation resistance of the outrigger fixing box.
2. The telescopic outriggers of the electric multi-functional handling and hoisting forklift according to claim 1, characterized in that, The inner longitudinal reinforcing plate and the outer longitudinal reinforcing plate are both arranged vertically in parallel. The transverse reinforcing plate is horizontally overlapped and fixed between the inner longitudinal reinforcing plate and the outer longitudinal reinforcing plate. The three are welded together to form a box-shaped reinforced load-bearing structure.
3. The front telescopic outriggers of the electric multi-functional handling and hoisting forklift according to claim 1, characterized in that, The outrigger mounting box adopts an embedded and hidden layout within the vehicle body, and is completely housed in the area below the foot pedal of the forklift cab. The outer edge of the outrigger mounting box does not extend beyond the outline of the forklift body, achieving a compact assembly layout without any protruding structures.
4. A method for arranging the front telescopic outriggers of an electric multi-functional handling and hoisting forklift, characterized in that, The method for arranging the front telescopic outriggers of the electric multi-functional palletizing and lifting forklift according to any one of claims 1-3 includes the following arrangement steps: Step S1, Box Positioning and Arrangement: The outrigger fixing box is embedded in the unused area under the foot pedal of the forklift cab. The rear end face of the outrigger fixing box is welded and fixed to the front end face of the forklift battery box to complete the overall base positioning and installation. Step S2, Arrangement of inner reinforcement structure: Weld inner longitudinal reinforcement plates symmetrically on the inner walls of the left and right sides of the support leg fixing box, weld outer longitudinal reinforcement plates symmetrically on the outer walls of the left and right sides of the support leg fixing box, and weld several transverse reinforcement plates between the inner longitudinal reinforcement plates and the outer longitudinal reinforcement plates on the same side to form an integrated box-type reinforced load-bearing structure. Step S3, Horizontal telescopic mechanism arrangement: Two sets of first-stage movable boxes for the outriggers are symmetrically slidably assembled inside the outrigger fixing box. The cylinder body of the horizontal hydraulic cylinder is fixedly installed inside the outrigger fixing box. The extension and retraction end of the piston rod of the horizontal hydraulic cylinder is connected to the first-stage movable box of the corresponding outrigger to realize the horizontal telescopic drive arrangement. Step S4, Vertical support mechanism arrangement: Vertical hydraulic cylinders are vertically installed at the bottom of the outer end of the first-level movable box of each set of outriggers, and support plates are fixedly assembled at the telescopic bottom of the vertical hydraulic cylinders to complete the arrangement of the vertical lifting support structure. Step S5, Overall Storage Layout Verification: After assembly, ensure that the entire outrigger mechanism is completely stored under the foot pedal in the cab, and that the outer edge of the box does not exceed the outline of the forklift body, forming a hidden and compact layout structure.