Self-adaptive hydraulic suspension mechanism

Abstract

The utility model relates to a self-adaptive hydraulic suspension mechanism which comprises a base, a wheel mounting station is arranged at each of four corners of the base, and a movable wheel group is movably connected in each wheel mounting station; the four edges of the movable wheel set are each connected with a limiting sliding assembly. Two opposite angles of the driving wheel group are connected with spring assemblies; and the other two opposite angles are connected with the oil cylinder assemblies. The oil cylinder assembly comprises two first oil cylinders, the two opposite angles of the wheel installation station are each connected with an oil cylinder installation plate, and the lower end faces of the two oil cylinder installation plates are each connected with one first oil cylinder. The two opposite angles of the movable wheel set are each connected with an oil cylinder fixing plate, and the output ends of the two first oil cylinders are connected with the two oil cylinder fixing plates respectively. The self-adaptive hydraulic suspension mechanism provided by the utility model aims to overcome the defects in the prior art, and ensures that a driving device can obtain enough positive pressure under the conditions of no load and full load.

Description

Technical Field

[0001] The utility model relates to an adaptive hydraulic suspension mechanism. Background Art

[0002] An Automated Guided Vehicle (AGV) refers to a transport vehicle equipped with electromagnetic or optical guiding devices, capable of traveling along a specified guiding path, having safety protection and various loading and unloading functions. It is a driverless transport vehicle in industrial applications, powered by a rechargeable battery. Generally, its traveling route and behavior can be controlled by a computer, or an electromagnetic track can be used to set up its traveling route. The electromagnetic track is adhered to the floor, and the AGV moves and operates according to the information brought by the electromagnetic track.

[0003] AGV is characterized by wheeled movement and has advantages such as fast movement, high working efficiency, simple structure, strong controllability, and good safety compared with walking, crawling, or other non-wheeled mobile robots. Compared with other commonly used equipment in material transportation, the activity area of AGV does not require fixed devices such as tracks and support frames to be laid, and is not restricted by the site, road, and space. Therefore, in the logistics system, it can most fully reflect its automation and flexibility, and achieve efficient, economical, and flexible unmanned production.

[0004] In traditional heavy-duty AGVs, most drive devices are connected to the vehicle body by springs, and there is a situation where the driving force is insufficient due to insufficient positive pressure of the drive wheels when the difference between no-load and full-load is large. Therefore, an adaptive hydraulic suspension mechanism is proposed to solve the above problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an adaptive hydraulic suspension mechanism to overcome the existing defects, ensuring that the drive device can obtain sufficient positive pressure under both no-load and full-load conditions.

[0006] The technical solution to achieve the above purpose is: an adaptive hydraulic suspension mechanism, including a base, with a wheel installation station provided at each of the four corners of the base, and a moving wheel group is movably connected in each wheel installation station; a limit sliding component is connected to each of the four sides of the moving wheel group; a spring component is connected to two diagonals of the moving wheel group; and an oil cylinder component is connected to the other two diagonals.

[0007] Preferably, the oil cylinder component includes two first oil cylinders, an oil cylinder mounting plate is connected to each of the two diagonals of the wheel installation station, a first oil cylinder is connected to the lower end surface of each of the two oil cylinder mounting plates; an oil cylinder fixing plate is connected to each of the two diagonals of the moving wheel group, and the output ends of the two first oil cylinders are respectively connected to the two oil cylinder fixing plates.

[0008] Preferably, the spring assembly includes two sets of spring groups. One spring mounting plate is connected to each of the two diagonals of the wheel mounting station, and one of the spring groups is connected to the lower end surface of each of the two spring mounting plates; one spring fixing plate is connected to each of the two diagonals of the driving wheel group, and the lower ends of the two spring groups are respectively connected to the two spring fixing plates.

[0009] Preferably, the limiting sliding assembly includes four limiting sliding rails, which are respectively connected to the side walls around the wheel mounting station. One set of pulley groups is connected to each of the four sides of the driving wheel group, and the pulley groups are slidably connected to the corresponding limiting sliding rails.

[0010] Preferably, a lifting cylinder is connected to each of the four corners of the base, a hydraulic station is connected to the middle of the upper end surface of the base, the hydraulic station is respectively connected to the lifting cylinder and the first oil cylinder, and the lifting cylinder and the first oil cylinder are communicated with each other.

[0011] The beneficial effects of the present utility model are as follows: In this adaptive hydraulic suspension mechanism, by connecting spring assemblies to two diagonals of the driving wheel group; and connecting oil cylinder assemblies to the other two diagonals. When the vehicle is unloaded, the spring groups provide positive pressure to obtain driving force; when it is fully loaded, the lifting cylinder transmits the internal oil pressure to the first oil cylinder through the weight of the heavy object, so that the first oil cylinder and the spring groups together push the driving wheel group, making the driving wheel group have a downward pressure, ensuring that the driving device can obtain sufficient positive pressure under full load conditions. Description of the Drawings

[0012] Figure 1 is a schematic diagram of the adaptive hydraulic suspension mechanism of the present utility model;

[0013] Figure 2 is a detailed connection diagram of the driving wheel group of the present utility model;

[0014] Figure 3 is a detailed connection diagram of the driving wheel group from another perspective of the present utility model.

[0015] In the figure: 1, base; 2, wheel mounting station; 3, driving wheel group; 4, first oil cylinder; 5, oil cylinder mounting plate; 6, oil cylinder fixing plate; 7, spring group; 8, spring mounting plate; 9, spring fixing plate; 10, limiting sliding rail; 11, pulley group; 12, lifting cylinder; 13, hydraulic station. Detailed Embodiment

[0016] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0017] The present utility model will be further described below in conjunction with the accompanying drawings.

[0018] As Figures 1 - 3 shown, the adaptive hydraulic suspension mechanism includes a base 1. A wheel installation station 2 is provided at each of the four corners of the base 1. A moving wheel set 3 is movably connected in each wheel installation station 2; a limiting sliding assembly is connected to each of the four sides of the moving wheel set 3; spring assemblies are connected to two opposite corners of the moving wheel set 3; and oil cylinder assemblies are connected to the other two opposite corners.

[0019] Specifically, the oil cylinder assembly includes two first oil cylinders 4. An oil cylinder mounting plate 5 is connected to each of the two opposite corners of the wheel installation station 2. A first oil cylinder 4 is connected to the lower end surface of each of the two oil cylinder mounting plates 5; an oil cylinder fixing plate 6 is connected to each of the two opposite corners of the moving wheel set 3. The output ends of the two first oil cylinders 4 are respectively connected to the two oil cylinder fixing plates 6. The two first oil cylinders 4 can push the oil cylinder fixing plates 6 to apply a downward pressure on the moving wheel set 3.

[0020] Specifically, the spring assembly includes two groups of spring sets 7. A spring mounting plate 8 is connected to each of the two opposite corners of the wheel installation station 2. A spring set 7 is connected to the lower end surface of each of the two spring mounting plates 8; a spring fixing plate 9 is connected to each of the two opposite corners of the moving wheel set 3. The lower ends of the two spring sets 7 are respectively connected to the two spring fixing plates 9. The spring sets 7 can push the spring fixing plates 9 to apply a downward pressure on the moving wheel set 3.

[0021] Specifically, the limiting sliding assembly includes four limiting slide rails 10. The four limiting slide rails 10 are respectively connected to the side walls around the wheel installation station 2. A pulley set 11 is connected to each of the four sides of the moving wheel set 3. The pulley set 11 is slidably connected to the corresponding limiting slide rail 10. The pulley set 11 slides on the slide rail 10 to drive the moving wheel set 3 to float up and down.

[0022] Specifically, a lifting cylinder 12 is connected to each of the four corners of the base 1. A hydraulic station 13 is connected to the middle of the upper end surface of the base 1. The hydraulic station 13 is respectively connected to the lifting cylinder 12 and the first oil cylinder 4. The lifting cylinder 12 and the first oil cylinder 4 are in communication. When overloaded, the lifting cylinder 12 transmits the internal oil pressure to the first oil cylinder 4 through the weight of the heavy object, so that the first oil cylinder 4 and the spring group 7 together push the driving wheel set 3, making the driving wheel set 3 have a downward pressure, ensuring that the driving device can obtain sufficient positive pressure under full load conditions.

[0023] When the self-adaptive hydraulic suspension mechanism is unloaded, the spring group 7 provides positive pressure to obtain driving force; when overloaded, in addition to the positive pressure of the spring group 7, there is also the pressure from the lifting cylinder 12, which is transmitted to the first oil cylinder 4, so as to ensure that the driving device can obtain sufficient positive pressure under both unloaded and full load conditions.

[0024] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An adaptive hydraulic suspension mechanism, characterized in that, It includes a base (1), with a wheel installation station (2) provided at each of the four corners of the base (1), and a moving wheel group (3) movably connected within each wheel installation station (2); a limiting sliding assembly is connected to each of the four sides of the moving wheel group (3); spring assemblies are connected to two opposite corners of the moving wheel group (3); and oil cylinder assemblies are connected to the other two opposite corners.

2. The adaptive hydraulic suspension mechanism according to claim 1, wherein The oil cylinder assembly includes two first oil cylinders (4), with an oil cylinder mounting plate (5) connected to each of the two opposite corners of the wheel installation station (2), and a first oil cylinder (4) connected to the lower end surface of each of the two oil cylinder mounting plates (5); an oil cylinder fixing plate (6) is connected to each of the two opposite corners of the moving wheel group (3), and the output ends of the two first oil cylinders (4) are respectively connected to the two oil cylinder fixing plates (6).

3. The adaptive hydraulic suspension mechanism according to claim 2, characterized in that, The spring assembly includes two groups of spring sets (7), with a spring mounting plate (8) connected to each of the two opposite corners of the wheel installation station (2), and a spring set (7) connected to the lower end surface of each of the two spring mounting plates (8); a spring fixing plate (9) is connected to each of the two opposite corners of the moving wheel group (3), and the lower ends of the two spring sets (7) are respectively connected to the two spring fixing plates (9).

4. The adaptive hydraulic suspension mechanism according to claim 1, characterized in that, The limiting sliding assembly includes four limiting sliding rails (10), with the four limiting sliding rails (10) respectively connected to the side walls around the wheel installation station (2), and a pulley group (11) is connected to each of the four sides of the moving wheel group (3), and the pulley group (11) is slidably connected to the corresponding limiting sliding rail (10).

5. The adaptive hydraulic suspension mechanism according to claim 2, wherein A lifting cylinder (12) is connected to each of the four corners of the base (1), a hydraulic station (13) is connected to the middle of the upper end surface of the base (1), the hydraulic station (13) is respectively connected to the lifting cylinder (12) and the first oil cylinder (4), and the lifting cylinder (12) and the first oil cylinder (4) are in communication.

Images