Forklift landing leg assembly

Abstract

The utility model provides a forklift supporting leg assembly which comprises a supporting leg main body, a first supporting leg and a second supporting leg. The supporting wheel set is installed in the opening of the supporting leg body and comprises a bearing wheel and a steering driving unit, and the bearing wheel is rotatably arranged at the bottom of the front end of the supporting leg body; the steering driving unit is located in the supporting leg body and comprises a power source and a gear set, the input end of the gear set is connected with the output end of the power source, and the output end of the gear set is connected with the input end of the bearing wheel. Power generated by the power source is transmitted through the gear set so as to drive the bearing wheel to steer around the theta axis. Elastic chain transmission is replaced by rigid gear meshing, the defects of an existing transmission mechanism in the aspects of precision, stability and reliability are effectively overcome, and an innovative solution is provided for precise steering of the bearing wheel.

Description

Technical Field

[0001] This utility model relates to the field of forklifts, and in particular to a forklift outrigger assembly. Background Technology

[0002] Currently, all-forward reach forklifts on the market require other load-bearing wheels to also have steering capabilities in order to achieve flexible steering and load balance. Because forklifts have high requirements for structural compactness, and the load-bearing wheels need to overcome a large steering torque when turning, existing technologies often place the steering motor in an unused area of ​​the outriggers or chassis, increasing the transmission ratio through a transmission mechanism to enhance output torque and thus drive the load-bearing wheels to turn. However, the mainstream chain-sprocket drive system has significant drawbacks: the elastic deformation of the chain itself, the sprocket meshing clearance, and vibration during transmission result in insufficient steering angle transmission accuracy, making it difficult to meet the requirements of high-precision steering control. Furthermore, the insufficient rigidity of the chain drive easily causes vibration during high-frequency steering operations, affecting the forklift's operational stability. Long-term use also leads to chain stretching and wear, further exacerbating the clearance problem and reducing reliability. Utility Model Content

[0003] To address all or part of the problems in the existing technology, this utility model provides a forklift outrigger assembly that replaces the elastic chain drive with rigid gear meshing, effectively solving the shortcomings of existing transmission mechanisms in terms of precision, stability, and reliability, and providing an innovative solution for precise steering of the load-bearing wheels.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A forklift outrigger assembly, comprising:

[0006] The main body of the support leg has at least one opening;

[0007] A support wheel assembly, installed within the opening of the outrigger body, includes a load-bearing wheel and a steering drive unit. The load-bearing wheel is rotatably disposed at the bottom of the front end of the outrigger body. The steering drive unit, located within the outrigger body, includes a power source and a gear set. The input end of the gear set is connected to the output end of the power source, and the output end of the gear set is connected to the input end of the load-bearing wheel. The power source generates power, which is transmitted through the gear set to drive the load-bearing wheel to steer around the θ axis.

[0008] The front end of the support leg body has a first opening and the middle has a second opening. The first opening is used to install the bearing wheel and the gear set, and the second opening is used to install the power source.

[0009] The support leg body also includes a mounting plate corresponding to the first opening. The mounting plate has a first mounting groove and a second mounting groove. The first mounting groove is provided with a wheel frame for mounting the bearing wheel, and the second mounting groove is provided with a mounting seat for mounting the gear set.

[0010] A support frame is provided in the first opening, and the mounting plate is fixed to the support frame by bolts, so that the wheel frame is coaxial with the load-bearing wheel.

[0011] The load-bearing wheel is rotatably mounted on the wheel frame via an axle.

[0012] The power source is provided with an output gear at its output end, and the bearing wheel is provided with an input gear at its input end.

[0013] The gear set is a multi-stage gear that meshes and drives in sequence, with its two ends respectively meshing and connected to the output gear of the power source and the input gear of the bearing wheel.

[0014] The power source is installed inside the second opening, and its position corresponds to the gear set on the mounting plate.

[0015] The power source is a steering motor.

[0016] The support leg body also includes a protective cover plate, which is installed over the opening.

[0017] This utility model has at least the following beneficial effects:

[0018] 1) By replacing the traditional chain drive with a gear drive in the forklift outrigger assembly, the rigid transmission characteristics of the multi-stage gear meshing are utilized to effectively solve the problems of large vibration, large gap and elastic deformation leading to inaccurate steering angle transmission in the existing chain drive, and significantly improve the accuracy and stability of the load-bearing wheel steering control.

[0019] 2) The first and second openings of the outrigger body are partitioned, and together with the first and second mounting slots and the support frame structure on the mounting plate, a compact layout and precise coaxial installation of the load-bearing wheel, gear set and power source are achieved, which optimizes space utilization and ensures the installation accuracy of the transmission system.

[0020] 3) The multi-stage gears are mounted on the mounting base via bearings. The layout of the power source and gear set positions ensures efficient power transmission and reduces axial movement, thereby improving transmission efficiency.

[0021] 4) The protective cover covers the top of the opening, forming a dustproof and waterproof protection for the internal components, effectively extending the service life of core components such as gear sets and power sources. The overall structure combines high transmission precision, compact layout, operational stability and convenient maintenance, significantly improving the reliability and practicality of the forklift outrigger assembly. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the specific embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a first-view structural schematic diagram of a forklift outrigger assembly according to an embodiment of the present invention.

[0024] Figure 2 This is a second-view structural schematic diagram of a forklift outrigger assembly according to an embodiment of the present invention.

[0025] Figure 3 This is a schematic diagram of the back structure of the mounting base in a forklift outrigger assembly according to an embodiment of the present invention.

[0026] Reference numerals: 1. Outrigger body; 101. Mounting plate; 102. Mounting seat; 103. Support frame; 104. Protective cover plate; 2. Load-bearing wheel; 3. Steering drive unit; 301. Power source; 302. Gear set; 3021. First transition gear; 3022. Second transition gear; 3023. Third transition gear. Detailed Implementation

[0027] The technical solutions in specific embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] The implementation of this utility model will be described in detail below with reference to specific embodiments.

[0029] In this embodiment of the utility model, in conjunction with reference to the reference Figures 1 to 3As shown, a forklift outrigger assembly is provided, which mainly consists of an outrigger body 1 and a support wheel assembly. The outrigger body 1 serves as the basic support structure of the entire assembly and has at least one opening, providing space and position for the subsequent installation of other components. The support wheel assembly is installed within the opening of the outrigger body 1 and includes a load-bearing wheel 2 and a steering drive unit 3. The load-bearing wheel 2 is rotatably mounted at the bottom of the front end of the outrigger body 1. During actual operation of the forklift, the load-bearing wheel 2 primarily bears the weight of the forklift and its load, and moves the forklift through its rotation. The steering drive unit 3 is located inside the outrigger body 1 and includes a power source 301 and a gear set 302. The power source 301 is the energy source for the entire steering drive and is typically a device capable of generating power, such as an electric motor. The gear set 302 plays a crucial role in power transmission and conversion. The input end of the gear set 302 is connected to the output end of the power source 301, ensuring that the power generated by the power source 301 can be smoothly transmitted to the gear set 302. The output end of the gear set 302 is connected to the input end of the load-bearing wheel 2. After transmission and amplification by the gear set 302, the power generated by the power source 301 can drive the load-bearing wheel 2 to rotate around the θ axis. This structural design allows the load-bearing wheel 2 to flexibly perform steering operations according to actual needs during forklift operation.

[0030] In this embodiment, the structural design of the outrigger body 1 fully considers the installation and layout requirements of each component. The outrigger body 1 has a first opening at its front end and a second opening in its middle. The first opening is designed to provide installation space for the load-bearing wheel 2 and the gear set 302, ensuring that these two key components can be rationally arranged and work together. The second opening is specifically for installing the power source 301. Placing the power source 301 in the middle of the outrigger body 1 helps optimize the overall structural center of gravity distribution and improves the stability of the forklift operation. The outrigger body 1 is also equipped with a mounting plate 101 corresponding to the first opening, which provides the mounting base for the load-bearing wheel 2 and the gear set 302. The mounting plate 101 has a first mounting groove and a second mounting groove. The first mounting groove has a wheel frame for mounting the load-bearing wheel 2, which is rotatably mounted on the wheel frame via an axle. The second mounting groove has a mounting seat 102 for mounting the gear set 302, which ensures the installation accuracy and stability of the gear set 302. Furthermore, a support frame 103 is also provided within the first opening. The mounting plate 101 is fixed to the support frame 103 with bolts, so that the wheel frame and the load-bearing wheel 2 can be coaxially aligned. This design ensures the stability and accuracy of the load-bearing wheel 2 during rotation, effectively reducing operational problems caused by installation deviations.

[0031] The output end of the power source 301 is equipped with an output gear, which is a key component for the power source 301 to output power externally. This output gear rotates along with the power source 301 during operation, transmitting the power generated by the power source 301 outwards. The input end of the load-bearing wheel 2 is equipped with an input gear. This input gear serves as the structure for the load-bearing wheel 2 to receive external power. When it receives appropriate power, it can drive the load-bearing wheel 2 to rotate, realizing the steering or movement function of the forklift. The gear set 302 adopts a multi-stage gear structure with sequential meshing transmission. This design can effectively realize the transmission and amplification of power to meet the torque and speed requirements of the load-bearing wheel 2 for steering. Specifically, the multi-stage gear includes a first transition gear 3021, a second transition gear 3022, and a third transition gear 3023. The first transition gear 3021 meshes with the output gear of the power source 301, directly receiving the power output from the power source 301. The second transition gear 3022 meshes with the first transition gear 3021, further receiving and transmitting power. The third transition gear 3023 meshes with the second transition gear 3022 and also with the input gear of the bearing wheel 2, accurately transmitting the power after multi-stage transmission and adjustment to the bearing wheel 2, thereby driving the bearing wheel 2 to complete the steering action.

[0032] The multi-stage gears are mounted on the mounting base 102 via bearings, ensuring flexible and stable gear rotation. The inner ring of the bearing fits tightly with the gear's drive shaft, while the outer ring matches the mounting hole of the mounting base 102, forming a robust transmission system on the mounting base 102. This structure not only reduces friction during gear rotation and improves transmission efficiency but also ensures the meshing accuracy between gears, extending the service life of the gear set 302. The power source 301 is installed within the second opening, corresponding to the gear set 302 on the mounting plate 101. This corresponding arrangement ensures accurate meshing between the output gear of the power source 301 and the first transition gear 3021 in the gear set 302, achieving efficient power transmission. Simultaneously, the rational layout makes the entire forklift outrigger assembly more compact, optimizing the overall space utilization of the forklift and improving its operational performance and stability.

[0033] In this embodiment, the outrigger body 1 also includes a protective cover plate 104, which covers and is installed above the first and second openings. Specifically, it is fixedly connected to the outrigger body 1 using standard components such as bolts or clips, forming a closed protective structure for the internal transmission components. The protective cover plate 104 effectively prevents dust, debris, and liquids from entering the openings, avoiding damage to the performance or shortening of the lifespan of core components such as the bearing wheel 2, gear set 302, and power source 301 due to external contaminants. Its shape matches the opening contour, and its edges are provided with sealing strips or groove structures, forming a reliable dustproof and waterproof seal when covering the openings, while not affecting the rotational freedom of the bearing wheel 2 or the transmission efficiency of the gear set 302.

[0034] It should be noted that, for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the scope of protection of the claims of this utility model.

Claims

1. A forklift truck leg assembly, characterized by, The utility model relates to a support wheel group of a support leg body (1) and a support leg body (1) of a support wheel group. The utility model discloses a support leg body (1) is provided with first opening and second opening, first opening is used for installing the load wheel (2) and gear set (302), second opening is used for installing power source (301). The utility model discloses a support leg body (1) still includes the mounting panel (101) corresponding with first opening, the mounting panel (101) is provided with first installation groove and second installation groove, is provided with the wheel frame of installing load wheel (2) on first installation groove, is provided with the mounting seat (102) of installing gear set (302) on second installation groove.

2. The fork truck leg assembly of claim 1, wherein, The utility model discloses a support leg body (1) still includes the mounting panel (101) corresponding with first opening, the mounting panel (101) is provided with first installation groove and second installation groove, is provided with the wheel frame of installing load wheel (2) on first installation groove, is provided with the mounting seat (102) of installing gear set (302) on second installation groove.

3. The fork truck leg assembly of claim 2, wherein, The utility model discloses a support leg body (1) still includes the mounting panel (101) corresponding with first opening, the mounting panel (101) is provided with first installation groove and second installation groove, is provided with the wheel frame of installing load wheel (2) on first installation groove, is provided with the mounting seat (102) of installing gear set (302) on second installation groove.

4. The fork truck leg assembly of claim 3, wherein, The utility model discloses a support leg body (1) still includes the mounting panel (101) corresponding with first opening, the mounting panel (101) is provided with first installation groove and second installation groove, is provided with the wheel frame of installing load wheel (2) on first installation groove, is provided with the mounting seat (102) of installing gear set (302) on second installation groove.

5. The fork truck leg assembly of claim 4 wherein, The utility model discloses a support leg body (1) still includes the mounting panel (101) corresponding with first opening, the mounting panel (101) is provided with first installation groove and second installation groove, is provided with the wheel frame of installing load wheel (2) on first installation groove, is provided with the mounting seat (102) of installing gear set (302) on second installation groove.

6. The fork truck leg assembly of claim 3 wherein, The utility model discloses a support leg body (1) still includes the mounting panel (101) corresponding with first opening, the mounting panel (101) is provided with first installation groove and second installation groove, is provided with the wheel frame of installing load wheel (2) on first installation groove, is provided with the mounting seat (102) of installing gear set (302) on second installation groove.

7. The fork truck leg assembly of claim 6 wherein, The utility model discloses a support leg body (1) still includes the mounting panel (101) corresponding with first opening, the mounting panel (101) is provided with first installation groove and second installation groove, is provided with the wheel frame of installing load wheel (2) on first installation groove, is provided with the mounting seat (102) of installing gear set (302) on second installation groove.

8. The fork truck leg assembly of claim 3, wherein, The utility model discloses a support leg body (1) still includes the mounting panel (101) corresponding with first opening, the mounting panel (101) is provided with first installation groove and second installation groove, is provided with the wheel frame of installing load wheel (2) on first installation groove, is provided with the mounting seat (102) of installing gear set (302) on second installation groove.

9. The fork truck leg assembly of claim 8 wherein, The utility model discloses a support leg body (1) still includes the mounting panel (101) corresponding with first opening, the mounting panel (101) is provided with first installation groove and second installation groove, is provided with the wheel frame of installing load wheel (2) on first installation groove, is provided with the mounting seat (102) of installing gear set (302) on second installation groove.

10. The fork truck leg assembly of claim 1, wherein, The utility model discloses a support leg body (1) still includes the mounting panel (101) corresponding with first opening, the mounting panel (101) is provided with first installation groove and second installation groove, is provided with the wheel frame of installing load wheel (2) on first installation groove, is provided with the mounting seat (102) of installing gear set (302) on second installation groove. The utility model discloses a support leg body (1) still includes the mounting panel (101) corresponding with first opening, the mounting panel (101) is provided with first installation groove and second installation groove, is provided with the wheel frame of installing load wheel (2) on first installation groove, is provided with the mounting seat (102) of installing gear set (302) on second installation groove. The utility model discloses a support leg body (1) still includes the mounting panel (101) corresponding with first opening, the mounting panel (101) is provided with first installation groove and second installation groove, is provided with the wheel frame of installing load wheel (2) on first installation groove, is provided with the mounting seat (102) of installing gear set (302) on second installation groove.

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