A jacking mechanism for heavy load omnidirectional AGV robot

Abstract

The utility model relates to heavy load omnidirectional AGV robot technical field, concretely is a kind of for heavy load omnidirectional AGV robot jacking mechanism, including chassis, screw jacking mechanism, auxiliary support component, lifting plate and double differential steering wheel. Screw jacking mechanism is located in the central chassis, and four screw lifting mechanisms form U-shaped lifting platform;Auxiliary support component is 2 groups, and is diagonally distributed on the outside of screw jacking mechanism and is different from the diagonal line of steering wheel, contains slide rail support, slide rail, sliding block, auxiliary support plate and second lifting plate support seat. The mechanism is through increasing support area and support point, reduces double differential steering wheel load, prolongs screw jacking mechanism life, realizes the accurate orientation and stable lifting of lifting plate, and is applicable to heavy load omnidirectional AGV robot heavy object transfer scene.

Description

Technical Field

[0001] This utility model relates to the field of heavy-duty omnidirectional AGV robot technology, and in particular to a lifting mechanism for heavy-duty omnidirectional AGV robots. Background Technology

[0002] Heavy-duty omnidirectional AGV robots are widely used in logistics sorting, intelligent manufacturing, and other scenarios, undertaking heavy-duty cargo transfer tasks. Their lifting mechanism is the core component for achieving cargo lifting and height adjustment. Currently, most mainstream lifting mechanisms in the industry use a single screw lifting system to support the lifting plate, which has significant technical drawbacks: First, the support area is limited, and uneven force distribution when lifting heavy loads can easily cause swaying, resulting in insufficient AGV operational stability and difficulty meeting the precise transfer requirements in heavy-duty scenarios. Second, the dual differential speed steering wheel, as a key walking execution component of the AGV, must simultaneously bear the weight of both the vehicle and the cargo. Long-term high-load operation can easily lead to accelerated wear of the steering wheel, decreased steering accuracy, and shortened steering wheel lifespan. Third, the single screw lifting mechanism experiences highly concentrated force, and long-term heavy-load operation can easily cause problems such as screw deformation and damage to transmission components, not only increasing equipment maintenance costs but also affecting production efficiency due to frequent failures.

[0003] Therefore, the industry urgently needs a new type of lifting mechanism that can expand the support area to improve stability, distribute the load to reduce the load on the steering wheel, and reduce concentrated force to extend the life of the screw mechanism, in order to solve the pain points of existing technologies and meet the high-efficiency and stable operation requirements of heavy-duty omnidirectional AGV robots. Utility Model Content

[0004] The purpose of this utility model is to overcome the problems of the prior art and provide a lifting mechanism for heavy-duty omnidirectional AGV robots. This mechanism solves the technical problems of small support area, large load on dual differential speed steering wheels, and concentrated force on the screw lifting mechanism, which leads to unstable AGV lifting.

[0005] The above objectives are achieved through the following technical solutions: A lifting mechanism for a heavy-duty omnidirectional AGV robot includes a screw lifting mechanism and auxiliary support components disposed on the surface of the chassis. Two of the auxiliary support components are located outside a set of symmetrical sides of the screw lifting mechanism. The tops of the screw lifting mechanism and the auxiliary support components are connected to the bottom of the lifting plate. The auxiliary support components are diagonally distributed and are different from the diagonal lines of the front and rear differential steering wheels on the chassis.

[0006] Furthermore, the screw lifting mechanism includes four lifting support seats with screw movable chambers located at the center of the chassis. Each lifting support seat is equipped with a screw jack, the lower end of the screw of the screw jack is placed in the screw movable chamber, and the top end of the screw is equipped with a first lifting plate support seat for connecting with the bottom surface of the lifting plate. The screw drive shafts of each screw jack are connected to a transmission shaft through a coupling and driven by a motor, forming a U-shaped screw lifting platform.

[0007] Furthermore, the internal transmission mechanism of the screw jack is either a worm gear driven screw lifting mechanism or a bevel gear driven screw lifting mechanism.

[0008] Furthermore, the auxiliary support assembly includes a vertically arranged slide rail support, the outer side of which is provided with a vertical slide rail, a plurality of matching sliders are provided on the slide rail, the outer side of which is provided with an auxiliary support plate, and a second lifting plate support seat is provided on the top of the auxiliary support plate.

[0009] Furthermore, in the initial state, the tops of the first lifting plate support and the second lifting plate support are on the same horizontal plane.

[0010] Furthermore, the slide rail support is provided with an auxiliary protective cover that can partially cover the slide rail, the slider, and the auxiliary support plate.

[0011] Furthermore, the motor is a servo motor or a stepper motor.

[0012] Furthermore, the number of sliders is 2-4.

[0013] Furthermore, the lifting plate is made of metal and has an anti-slip texture on its surface.

[0014] Furthermore, the dual differential steering wheels are omnidirectional wheels, possessing differential steering functionality.

[0015] This utility model provides a lifting mechanism for heavy-duty omnidirectional AGV robots. By using a screw-lifting mechanism equipped with diagonally distributed auxiliary support components, the support area and support points of the lifting plate are expanded, improving the stability of the AGV when lifting heavy objects. This also distributes the load, reducing the load on the dual differential speed steering wheels and extending their lifespan; reduces the stress on the screw-lifting mechanism, minimizing component damage, lowering maintenance costs, and ensuring efficient operation. Specific beneficial effects are as follows: 1. Significantly improved support stability: The screw lifting mechanism and auxiliary support components work together to increase the horizontal support area of ​​the lifting plate and the number of support points, making the force more even when the AGV is lifting heavy loads, effectively avoiding swaying and improving operational stability.

[0016] 2. Reduced load on dual differential steering wheels: The auxiliary support components are diagonally distributed and avoid the diagonal of the steering wheels, directly transferring part of the lifting load to the chassis, reducing the load pressure on the dual differential steering wheels, extending the service life of the steering wheels, and improving the steering accuracy of the AGV.

[0017] 3. Extended lifespan of the lead screw lifting mechanism: The load-sharing design with multiple support points reduces the concentrated stress on the lead screw lifting mechanism, reduces the risk of lead screw deformation and wear of transmission components, significantly extends its service life, and reduces equipment maintenance costs.

[0018] 4. Precise lifting guidance and good protection: The slide rail slider structure of the auxiliary support component provides precise guidance for the lifting of the lifting plate, ensuring a smooth and non-deviation-free lifting process; the auxiliary protective cover effectively isolates external interference, ensuring the cleanliness and safe operation of the mechanism. Attached Figure Description

[0019] Figure 1 This is a first-view structural schematic diagram of a lifting mechanism for a heavy-duty omnidirectional AGV robot according to the present invention. Figure 2 This is a second-view structural schematic diagram of a lifting mechanism for a heavy-duty omnidirectional AGV robot according to the present invention. Figure 3 This is a side view of the auxiliary support component in the lifting mechanism of a heavy-duty omnidirectional AGV robot according to the present invention. Figure 4 This is a side view of the lifting mechanism of the heavy-duty omnidirectional AGV robot described in this utility model after it is connected to the lifting plate; Figure 5 This is a schematic diagram of the lifting mechanism for a heavy-duty omnidirectional AGV robot described in this utility model, mounted on the chassis.

[0020] Illustration markings: 1- Chassis; 2-Screw lifting mechanism, 201-Lifting machine support seat, 202-Screw lifting machine, 203-Screw, 204-First lifting plate support seat, 205-Coupling, 206-Drive shaft, 207-Motor, 208-U-shaped screw lifting platform; 3-Auxiliary support assembly, 301-Slide rail support, 302-Slide rail, 303-Slider, 304-Auxiliary support plate, 306-Second lifting plate support, 307-Auxiliary protective cover; 4-Lifting plate; 5-Dual differential steering wheel. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. The described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] like Figure 1 and Figure 2 As shown, this solution provides a lifting mechanism for heavy-duty omnidirectional AGV robots, with the following specific structure: like Figure 5 As shown, the chassis 1 of this mechanism is made of high-strength metal material, providing an installation foundation for the screw lifting mechanism 2, auxiliary support assembly 3 and dual differential steering wheel 5, ensuring the load-bearing strength of the overall structure.

[0023] The screw lifting mechanism 2, as the core lifting actuator, is located in the central area of ​​the chassis 1. It consists of four lifting support seats 201, screw lifting machine 202, screw 203, first lifting plate support seat 204, coupling 205, transmission shaft 206 and motor 207, forming a U-shaped screw lifting platform 208.

[0024] The lifting support base 201 has a movable cavity for the lead screw 203 inside, which is used to accommodate the lower end of the lead screw 203 and ensure the structural stability when the lead screw is raised or lowered.

[0025] The screw jack 202 is installed on the top of the jack support 201. It can drive the screw 203 to move up and down in the vertical direction through worm gear transmission or bevel gear transmission. The transmission form is selected according to the load requirements to ensure the lifting torque and accuracy.

[0026] The lead screw 203 is made of high-strength alloy material, and its top end is connected to the first lifting plate support seat 204, which is used to directly bear part of the weight of the lifting plate 4 and realize height adjustment.

[0027] The coupling 205 and the drive shaft 206 link the drive shafts of the four screw jacks 202 to ensure that each screw 203 rises and falls synchronously, thus preventing the lifting plate 4 from tilting.

[0028] Motor 207 is a servo motor or stepper motor that provides power to the lead screw lifting mechanism. It has precise speed adjustment and positioning functions to meet the control requirements of different lifting heights.

[0029] It should be noted that the internal transmission form of the screw jack 202 described in this solution can be a worm gear driving screw lifting or a bevel gear driving screw lifting. Since its structure and transmission principle are common knowledge in the field, they will not be described in detail here.

[0030] There are two sets of auxiliary support components 3, symmetrically distributed on the outer side of one set of opposite sides of the screw lifting mechanism 2, and their diagonal distribution direction is different from the diagonal direction of the dual differential steering wheels 5 on the chassis 1. Each set of auxiliary support components 3 includes: The slide rail support 301 is vertically fixed to the surface of the chassis 1, providing an installation carrier for the slide rail 302. It is made of rigid metal to ensure the vertical support strength.

[0031] The slide rail 302 is vertically mounted on the outer side of the slide rail support 301. There are 2-4 sliders 303 that slide in cooperation with the slide rail 302 to achieve smooth lifting and lowering guidance of the auxiliary support plate 304.

[0032] like Figures 1-3 As shown, the auxiliary support plate 304 is fixedly connected to the outer side of the slider 303, and a second lifting plate support 306 is provided on the top. In the initial state, the top of the second lifting plate support 306 and the top of the first lifting plate support 204 are on the same horizontal plane, and together they support the lifting plate 4.

[0033] The auxiliary protective cover 307 is fitted on the outside of the slide rail 302, the slider 303 and the auxiliary support plate 304 to prevent dust and debris from entering or interfering with surrounding components during the lifting process, and to ensure the cleanliness and safety of the mechanism operation.

[0034] The lifting plate 4 is made of metal with an anti-slip texture on the surface. Its bottom is connected to the first lifting plate support 204 and the second lifting plate support 306. It is used to directly lift goods. The anti-slip texture can increase the friction with the goods and prevent them from slipping.

[0035] The dual differential steering wheels 5 are mounted on the front and rear sides of the chassis 1. They are omnidirectional wheels with differential steering capabilities, enabling the AGV to move in all directions. The auxiliary support components 3 are distributed diagonally from the steering wheels, which effectively disperses the lifting force and reduces the load on the dual differential steering wheels 5.

[0036] During assembly, firstly, four lifting platform support seats 201 are fixed in a U-shaped layout in the center of the chassis 1. Then, a screw jack 202 is installed on each lifting platform support seat 201. The drive shafts of the four screw jacks 202 are connected as one unit through a coupling 205 and a drive shaft 206. Finally, the motor 207 is connected to the drive shaft 206 to complete the assembly of the screw lifting mechanism 2.

[0037] Next, install the two auxiliary support components 3 diagonally on the outside of the screw lifting mechanism 2, ensuring that their distribution direction is different from the diagonal of the dual differential steering wheel 5. During installation, first fix the slide rail support 301, then install the slide rail 302 on the outer side of the slide rail support 301, then install the slider 303 into the slide rail 302, connect the auxiliary support plate 304 to the slider 303, and finally install the auxiliary protective cover 307.

[0038] Next, place the lifting plate 4 on top of the first lifting plate support 204 and the second lifting plate support 306, and adjust it so that the tops of the two are flush in the initial state, thus completing the installation of the lifting plate 4.

[0039] like Figure 4 and 5 As shown, during operation, motor 207 drives transmission shaft 206 to rotate, which in turn drives four screw jacks 202 to operate synchronously via coupling 205. Screws 203 drive lifting plates 4 to rise and fall. Simultaneously, lifting plates 4 drive auxiliary support plates 304 to slide along slide rails 302, and auxiliary support components 3 provide auxiliary support and precise guidance. During the lifting process, auxiliary support components 3 effectively distribute the load, reduce the load on the dual differential steering wheels 5, and ensure the stable operation of the AGV.

[0040] The above description is only for illustrating the embodiments of this utility model and is not intended to limit this utility model. For those skilled in the art, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A lifting mechanism for a heavy-duty omnidirectional AGV robot, characterized in that, It includes a lead screw lifting mechanism (2) and an auxiliary support assembly (3) disposed on the surface of the chassis (1). Two of the auxiliary support assemblies (3) are located outside a set of symmetrical sides of the lead screw lifting mechanism (2). The top of the lead screw lifting mechanism (2) and the auxiliary support assembly (3) are connected to the bottom of the lifting plate (4). The auxiliary support assemblies (3) are diagonally distributed and are different from the diagonal of the front and rear dual differential steering wheels (5) on the chassis (1).

2. A lifting mechanism for a heavy-duty omnidirectional AGV robot according to claim 1, characterized in that, The screw lifting mechanism (2) includes four lifting support seats (201) with screw movable chambers located in the center of the chassis (1). Each lifting support seat (201) is equipped with a screw jack (202). The lower end of the screw (203) of the screw jack (202) is placed in the screw movable chamber. The top end of the screw (203) is equipped with a first lifting plate support seat (204) for connecting with the bottom surface of the lifting plate (4). The screw drive shafts of each screw jack (202) are connected to the transmission shaft (206) through a coupling (205) and driven by a motor (207) to form a U-shaped screw lifting platform (208).

3. A lifting mechanism for a heavy-duty omnidirectional AGV robot according to claim 2, characterized in that, The internal transmission of the screw jack (202) is either worm gear driven screw lifting or bevel gear driven screw lifting.

4. A lifting mechanism for a heavy-duty omnidirectional AGV robot according to claim 2, characterized in that, The auxiliary support assembly (3) includes a vertically arranged slide rail support (301), a vertical slide rail (302) is provided on the outer side of the slide rail support (301), a plurality of matching sliders (303) are provided on the slide rail (302), an auxiliary support plate (304) is provided on the outer side of the slider (303), and a second lifting plate support seat (306) is provided on the top of the auxiliary support plate (304).

5. A lifting mechanism for a heavy-duty omnidirectional AGV robot according to claim 4, characterized in that, In the initial state, the tops of the first lifting plate support (204) and the second lifting plate support (306) are on the same horizontal plane.

6. A lifting mechanism for a heavy-duty omnidirectional AGV robot according to claim 4, characterized in that, The slide rail support (301) is provided with an auxiliary protective cover (307) that can partially cover the slide rail (302), the slider (303), and the auxiliary support plate (304).

7. A lifting mechanism for a heavy-duty omnidirectional AGV robot according to claim 2, characterized in that, The motor (207) is a servo motor or a stepper motor.

8. A lifting mechanism for a heavy-duty omnidirectional AGV robot according to claim 4, characterized in that, The number of sliders (303) is 2-4.

9. A lifting mechanism for a heavy-duty omnidirectional AGV robot according to claim 1, characterized in that, The lifting plate (4) is made of metal and has an anti-slip texture on its surface.

10. A lifting mechanism for a heavy-duty omnidirectional AGV robot according to claim 1, characterized in that, The dual differential steering wheel (5) is an omnidirectional wheel with differential steering function.

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