Floating type driving wheel assembly and AGV forklift

Abstract

The utility model provides a floating type driving wheel assembly which comprises a driving seat, a driving device installed on the driving seat and a bottom plate connected with a frame. A floating mechanism is mounted between the bottom plate and the driving seat; when the driving device floats up and down, the bottom plate synchronously follows up through the floating mechanism and is subjected to acting force in the up-down direction, the utility model further provides an AGV forklift which comprises a frame and a driving assembly, and the floating type driving wheel assembly is installed in the driving assembly. The problems that a force increasing mechanism is additionally arranged to balance the road holding force of a single steering wheel, pressure of back space layout is caused, and meanwhile energy consumption is large are solved.

Description

Technical Field

[0001] This utility model relates to the technical field of logistics handling industry, and in particular to a floating drive wheel assembly and an AGV forklift. Background Technology

[0002] In the field of material handling technology, there are currently two types of transport: manned handling machinery and unmanned handling machinery. Unmanned handling machinery is collectively referred to as AGV. Most electric forklifts on the market currently have two types of fixed drive assemblies: one is a fixed type; the other is a floating type.

[0003] Chinese patent CN215436689U discloses a single steering wheel for an AGV, including a floating mechanism and a steering gear.

[0004] The system comprises a structure, a drive mechanism, a force-amplifying mechanism, and a steering wheel assembly. The floating mechanism includes an upper floating stop, a lower floating stop, a floating rod, and a shock-absorbing spring assembly. The two ends of the floating rod are connected to the upper and lower floating stops, respectively. The drive mechanism is slidably engaged with the floating rod. The shock-absorbing spring assembly is sleeved on the floating rod and located between the upper floating stop and the drive mechanism. The drive mechanism includes a drive seat, on which a drive device capable of driving the steering wheel assembly to roll is provided. A steering mechanism is located on the drive seat and capable of driving the steering wheel assembly to rotate relative to the axial direction of the floating rod. The force-amplifying mechanism is located on the upper floating stop, and the drive end of the force-amplifying mechanism is connected to the drive seat.

[0005] However, with this technical solution, when fully loaded or during bumpy driving, the steering wheel floats upward, and the frame is subjected to an upward force from the floating mechanism, which reduces the grip of a single steering wheel. If an additional force-boosting mechanism is added to balance this, not only will the overall weight of the vehicle increase, but the pressure on the rear space layout will also increase, and energy consumption will also increase. Utility Model Content

[0006] The purpose of this utility model is to address the shortcomings of existing technologies by providing a specific mechanical structure setting for the floating mechanism. This allows the base plate to be subjected to a downward force from the floating mechanism when the drive device floats upward, thereby improving the ground grip of the entire floating drive wheel assembly. During operation, the floating mechanism is adjustable, solving the problem of additional force-boosting mechanisms to balance the ground grip of a single steering wheel, which would otherwise create pressure on the rear space layout and result in high energy consumption.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A floating drive wheel assembly includes a drive base, a drive unit mounted on the drive base, and a base plate connected to the vehicle frame;

[0009] A floating mechanism is installed between the base plate and the drive seat, so that the floating mechanism applies a force to the base plate to control the drive device to float up and down adaptively.

[0010] Preferably, when the driving device floats upward, the base plate is subjected to a downward force from the floating mechanism.

[0011] Preferably, the floating mechanism includes a guide post mounted on the base plate, the guide post passing upward through a mounting base, an elastic element, and a fastener in sequence;

[0012] The upper end of the mounting base is connected to the drive base, and its lower end is vertically slidably mounted on the guide post.

[0013] Preferably, the mounting base has a Z-shaped structure.

[0014] Preferably, the floating mechanism is provided in two sets and symmetrically arranged on both sides of the driving device.

[0015] Preferably, a vertical guide mechanism is also provided between the drive seat and the frame to achieve vertical guidance and limitation relative to the frame when the drive device moves up and down.

[0016] Preferably, the vertical guide mechanism includes:

[0017] Guide rail, which is connected to the vehicle frame via a first side plate; and

[0018] The slider is connected to the drive seat and is slidably mounted on the guide rail.

[0019] Preferably, a second side plate is connected to both sides of the first side plate, and the lower end of the second side plate is connected to the bottom plate.

[0020] Alternatively, the drive unit includes a straight-line drive unit, a steering mechanism, and drive wheels.

[0021] An AGV forklift includes a frame and a drive assembly, with a floating drive wheel assembly mounted inside the drive assembly.

[0022] As another preferred embodiment, the front end of the frame is connected to a fork, and the fork has several sets of mounting units arranged inside it along its length. The load-bearing wheel can be detachably mounted on the mounting unit at any position.

[0023] The beneficial effects of this utility model are as follows:

[0024] 1. This utility model uses a floating mechanism to provide a synchronous upward force to the elastic element through the mounting base when the road surface is uneven or when the drive device floats upward due to lifting heavy objects. The greater the force on the elastic element, the greater the reaction force, which increases the downward positive pressure on the base plate and improves the grip of the entire floating drive wheel assembly. During operation, the floating is adjustable, so it is not easy to slip when driving under full load or climbing uphill. The overall structure is simple, compact, reliable and stable.

[0025] 2. This utility model uses a vertical guide mechanism to ensure that when the drive device floats up and down, the drive seat slides on the guide rail via a slider. The guide rail restricts and ensures the floating stability of the drive device with high precision.

[0026] 3. By setting up multiple installation units, this utility model allows the wheelbase of the vehicle to be changed according to the requirements of the usage scenario by adjusting the installation position of the load-bearing wheels, thereby improving the stability of the AGV forklift during operation, depending on different scenarios and cargo conditions.

[0027] In summary, this utility model has the advantages of being reliable, stable, and flexible. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0029] Figure 2 This is a front view schematic diagram of Embodiment 1 of the present utility model;

[0030] Figure 3 This is a cross-sectional view of Embodiment 1 of the present utility model;

[0031] Figure 4 This is a rear view schematic diagram of Embodiment 1 of the present utility model;

[0032] Figure 5 This is a schematic diagram of the upward floating of Embodiment 1 of this utility model;

[0033] Figure 6 This is a schematic diagram of Embodiment 2 of the present invention;

[0034] Figure 7 This is a cross-sectional view of Embodiment 2 of the present invention;

[0035] Figure 8 This is a top view of Embodiment 2 of the present invention. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0038] Example 1

[0039] like Figure 1-3 As shown, this embodiment provides a floating drive wheel assembly, including a drive seat 1, a drive device 2 mounted on the drive seat 1, and a base plate 4 connected to the frame 3;

[0040] A floating mechanism 5 is installed between the base plate 4 and the drive seat 1 so that the driving device 2 can be controlled to float up and down adaptively by the force applied to the base plate 4 by the floating mechanism 5.

[0041] When the drive device 2 moves up and down during its movement, it simultaneously drives the drive seat 1 and the floating mechanism 5 to apply a reverse force to the base plate 4. That is, the base plate 4 is simultaneously subjected to a force in the up and down direction through the floating mechanism 5.

[0042] Furthermore, such as Figure 5 As shown, when the driving device 2 floats upward, the base plate 4 is subjected to a downward force from the floating mechanism 5.

[0043] In this application, by setting up a floating mechanism 5, when the road surface is uneven or the drive device 2 floats upward due to lifting heavy objects, the drive device 2 applies a synchronous upward force to the elastic element 53 through the mounting base 52. As a result, the greater the force on the elastic element 53, the greater the reaction force, which increases the downward positive pressure on the base plate 4 and improves the grip of the entire floating drive wheel assembly. During operation, the floating is adjustable, so it is not easy to slip when fully loaded or climbing. The overall structure is simple, compact, reliable and stable.

[0044] It should be noted that traditional drive wheel assemblies provide the floating drive with balancing pressure by setting up an additional force amplification mechanism.

[0045] Furthermore, such as Figure 3 As shown, the floating mechanism 5 includes a guide post 51 mounted on the base plate 4, and the guide post 51 passes through the mounting base 52, the elastic element 53 and the fastener 54 in sequence.

[0046] The upper end of the mounting base 52 is connected to the drive base 1, and its lower end is vertically slidably mounted on the guide post 51.

[0047] In addition, such as Figure 2 As shown, the mounting base 52 has a Z-shaped structure.

[0048] Furthermore, such as Figure 2 As shown, the floating mechanism 5 is provided in two sets and is symmetrically arranged on both sides of the driving device 2.

[0049] In this application, floating mechanisms 5 are symmetrically arranged on both sides of the drive device 2, so that when the drive device 2 floats up and down, the two sets of floating mechanisms 5 increase the force balance of the entire drive seat 1 on the base plate 4, and when the drive device 2 shakes on bumpy roads, the two sets of floating mechanisms 5 restrain and stabilize each other.

[0050] On the other hand, if any component of a set of floating mechanisms 5 is damaged, it will not affect the floating action of the other floating mechanism 5 to balance the driving device 2.

[0051] In addition, the floating mechanism 5 can be set as one set or multiple sets can be set side by side.

[0052] Furthermore, such as Figure 1 As shown, a vertical guide mechanism 6 is also provided between the drive seat 1 and the frame 3 to realize the vertical guide limit relative to the frame 3 when the drive device 2 floats up and down.

[0053] Among them, the vertical guide mechanism 6 is a guide rail slider structure.

[0054] Furthermore, the vertical guide mechanism 6 includes:

[0055] Guide rail 61, which is connected to the frame 3 via a first side plate 62; and

[0056] Slider 63 is connected to drive seat 1 and slidably mounted on guide rail 61.

[0057] In this application, by setting a vertical guide mechanism 6, when the drive device 2 floats up and down, the drive seat 1 slides on the guide rail 61 through the slider 63. The guide rail 61 is used to limit and ensure the floating stability of the drive device 2 with high precision.

[0058] In addition, multiple sets of vertical guide mechanisms 6 can be set along the length of the first side plate 62 to achieve stable guidance.

[0059] Furthermore, such as Figure 1 As shown, a second side plate 64 is connected to both sides of the first side plate 62, and the lower end of the second side plate 64 is connected to the bottom plate 4.

[0060] It is worth noting that by installing the second side plate 64 on both sides of the first side plate 62, the base plate 4 and the vertical guide mechanism 6 are fixedly installed in multiple positions, making the entire floating drive wheel assembly structure more compact, thereby further stabilizing the connection between the floating drive wheel assembly and the vehicle frame.

[0061] Furthermore, such as Figure 2 As shown, the drive device 2 includes a straight drive unit 21, a steering mechanism 22, and a drive wheel 23.

[0062] It should be noted that:

[0063] The working principle of the straight-line drive unit 21 is as follows:

[0064] A drive motor 13 mounted on the drive base can transmit torque to a helical gear through a gear ratio and transmit power through a gear ratio transmission in a reduction gearbox, thereby driving the drive wheel 23 to rotate and realize the forward and backward movement of the drive wheel 23; or, a direct drive electric device can be directly installed on the drive wheel 23 on the side coaxially.

[0065] The working principle of steering mechanism 22 is as follows:

[0066] The steering motor mounted on the drive seat rotates, and through the meshing of gear components, it drives the drive wheel 23 to rotate left and right, thereby achieving reliable gear ratio transmission to the drive wheel 23.

[0067] This enables the driving function of rotating the drive wheels 360 degrees;

[0068] The structure of the drive device is the existing technology mentioned in the background section, and will not be described in detail here.

[0069] Example 2

[0070] like Figure 6-8 As shown, components that are the same as or corresponding to those in Embodiment 1 are referred to using the same reference numerals as in Embodiment 1. For simplicity, only the differences from Embodiment 1 are described below. The difference between Embodiment 2 and Embodiment 1 is as follows:

[0071] An AGV forklift includes a frame 3, forks 8 and a drive assembly 7, wherein a floating drive wheel assembly as described in Embodiment 1 is installed inside the drive assembly 7.

[0072] Furthermore, the front end of the frame 3 is connected to a fork 8, and the fork 8 has several sets of mounting units 81 arranged inside it along its length. The load-bearing wheel 82 can be detachably installed on the mounting unit 81 at any position.

[0073] In this application, by setting multiple installation units 81, the wheelbase of the vehicle can be changed according to the installation position of the load-bearing wheels 82, thereby improving the stability of the AGV forklift during operation, depending on different scenarios and cargo conditions.

[0074] When the load is large or the application is in a confined space, the load-bearing wheel 82 needs to be installed near the front end of the fork 8 to ensure the center of gravity and make the center of gravity of the goods close to the overall center. When the load is small, the load-bearing wheel 82 needs to be installed near the frame to ensure the center of gravity is balanced.

[0075] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A floating drive wheel assembly, comprising a drive base (1) and a drive device (2) mounted on the drive base (1), characterized in that... It also includes a base plate (4) connected to the frame (3); A floating mechanism (5) is installed between the base plate (4) and the drive seat (1) so that the driving device (2) can be controlled to float up and down adaptively by the force applied to the base plate (4) by the floating mechanism (5); The floating mechanism (5) includes a guide post (51) mounted on the base plate (4), the guide post (51) passing through the mounting base (52), the elastic element (53) and the fastener (54) in sequence. The upper end of the mounting base (52) is connected to the drive base (1), and its lower end slides vertically relative to the guide post (51).

2. The floating drive wheel assembly according to claim 1, characterized in that, When the drive device (2) floats upward, the base plate (4) is subjected to a downward force from the floating mechanism (5).

3. The floating drive wheel assembly according to claim 1, characterized in that, The floating mechanism (5) is provided in two sets and is symmetrically arranged on both sides of the driving device (2).

4. A floating drive wheel assembly according to claim 1, characterized in that, A vertical guide mechanism (6) is also provided between the drive seat (1) and the frame (3) to guide the vertical movement of the drive wheel assembly relative to the frame (3).

5. A floating drive wheel assembly according to claim 4, characterized in that, The vertical guide mechanism (6) is a guide rail slider structure.

6. A floating drive wheel assembly according to claim 5, characterized in that, The vertical guide mechanism (6) includes: Guide rail (61), said guide rail (61) is disposed on the first side plate (62) of said frame (3); and The slider (63) is mounted on the drive seat (1) and slides in cooperation with the guide rail (61).

7. A floating drive wheel assembly according to claim 6, characterized in that, A second side plate (64) is connected to both sides of the first side plate (62), and the lower end of the second side plate (64) is connected to the bottom plate (4).

8. An AGV forklift, comprising a frame (3), forks (8), and a drive assembly (7), characterized in that, A floating drive wheel assembly as described in any one of claims 1-7 is installed inside the drive assembly (7).

9. An AGV forklift according to claim 8, characterized in that, The front end of the frame (3) is connected to a fork (8), and the fork (8) has several sets of mounting units (81) arranged inside it along its length. The load-bearing wheel (82) can be detachably installed on the mounting unit (81) at any position.

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