CN212220380U

CN212220380U - Trolley with chassis having suspension structure

Info

Publication number: CN212220380U
Application number: CN202020485410.0U
Authority: CN
Inventors: 张晨阳; 夏陆政; 卢咏平
Original assignee: Shenzhen Huaner Technology Co ltd
Current assignee: Shenzhen Huaner Technology Co ltd
Priority date: 2020-04-03
Filing date: 2020-04-03
Publication date: 2020-12-25
Anticipated expiration: 2030-04-03

Abstract

The utility model provides a chassis has suspended structure's dolly, including frame, bottom plate, driving motor, linkage and wheel, the bottom plate divide into PMKD and floating bottom plate, PMKD and frame fixed connection, floating bottom plate passes through linkage and is connected with PMKD, and the wheel passes through the axis of rotation and is connected with driving motor, and driving motor sets up on the dolly bottom plate, the utility model discloses a be PMKD and floating bottom plate with the dolly bottom plate split to link together it through setting up simple suspension, thereby realized that the dolly bottom plate can take place the deformation of certain degree when the operation, 4 wheels can stabilize contact ground when making the dolly travel, simple structure, and the practicality is strong.

Description

Trolley with chassis having suspension structure

Technical Field

The utility model relates to a mobile device technical field based on mecanum wheel especially relates to a chassis has suspended structure's dolly.

Background

Mecanum wheels are a patent to Mecanum, Sweden; this omni-directional movement is based on the principle of a central wheel with a number of wheel axles located at the periphery of the wheel, these angled peripheral axles translating a portion of the wheel steering force above a wheel normal force; depending on the direction and speed of the respective wheels, the resulting combination of these forces produces a resultant force vector in any desired direction thereby ensuring that the platform is free to move in the direction of the resulting resultant force vector without changing the direction of the wheels themselves; a plurality of small rollers are obliquely distributed on the wheel rim of the wheel, so that the wheel can transversely slide; the generatrix of the small rollers is very special, and when the wheel rotates around a fixed wheel spindle, the envelope curve of each small roller is a cylindrical surface, so that the wheel can continuously roll forwards; the Mecanum wheel has compact structure and flexible movement, and is a very successful omnidirectional wheel; 4 novel wheels are combined, so that the all-directional movement function can be realized more flexibly and conveniently.

The Mecanum wheels need four wheels to stably touch the ground when in operation; if the four wheels cannot stably touch the ground, the advantages of accurate orientation and fixed-distance movement of the Mecanum wheels cannot be exerted; at present, most of namm wheel trolleys sold in the market are rigid trolley bodies, and the four-wheel grounding problem is not considered; however, due to manufacturing and assembly errors of the rigid frame, part of the wheels may be suspended, so that the trolley cannot stably run, and the advantages of the Mecanum wheels cannot be exerted; the traditional suspension system has many components, complex structure, high manufacturing requirement, complex assembly and high cost, and is not suitable for the use of a Mirco master wheel trolley for teaching with low cost requirement; therefore, there is a need for a chassis suspension system with a simple structure, which can stably contact the ground with four wheels of a mecanum wheel, and has a simple structure and a low manufacturing cost.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides a trolley with a chassis having a suspension structure, which comprises a frame, a bottom plate, a driving motor and wheels, wherein the driving motor is fixed on the bottom plate and is connected with the wheels through a rotating shaft; the suspension device is further included, the bottom plate comprises a fixed bottom plate and a floating bottom plate, the fixed bottom plate is fixedly connected with the frame, and the fixed bottom plate is connected with the floating bottom plate through the suspension device to form a deformable bottom plate suspension structure.

Preferably, the method comprises the following steps: the suspension device is an elastic sheet, the elastic sheet is arranged to be of an I-shaped structure, one transverse end of the elastic sheet is connected with the fixed bottom plate through a screw, and the other transverse end of the elastic sheet is connected with the floating bottom plate.

Preferably, the method comprises the following steps: the elastic sheet is made of elastic materials, and can quickly recover the original shape after plastic deformation.

Preferably, the method comprises the following steps: the floating bottom plate is further provided with a limiting groove, a limiting screw is installed at the position, opposite to the limiting groove, of the frame, and the limiting screw penetrates through the limiting groove and limits displacement of the floating bottom plate in the vertical direction.

Preferably, the method comprises the following steps: the bottom plate divide into preceding bottom plate and back bottom plate, driving motor sets up 4 at least, and every driving motor independently drives a wheel, driving motor divide into two sets ofly set up respectively on preceding bottom plate and back bottom plate.

Preferably, the method comprises the following steps: the front bottom plate is a fixed bottom plate, and the rear bottom plate is a floating bottom plate.

Preferably, the method comprises the following steps: the bottom plate is divided into a front bottom plate and a rear bottom plate, the front bottom plate is a floating bottom plate, and the rear bottom plate is a fixed bottom plate.

Preferably, the method comprises the following steps: the bottom plate also comprises a middle bottom plate, the front bottom plate and the rear bottom plate are floating bottom plates, and the middle bottom plate is a fixed bottom plate.

Preferably, the method comprises the following steps: the wheels are mecanum wheels that can be precisely oriented and distance moved.

Preferably, the method comprises the following steps: the frame still includes the roof board, the roof board is provided with the extension mouth that is used for the extension installation.

The utility model has the advantages that: compared with the prior art, the trolley with the chassis having the suspension structure provided by the utility model comprises a frame, a bottom plate, a driving motor and wheels, wherein the driving motor is fixed on the bottom plate and is connected with the wheels through a rotating shaft; the suspension device is further included, the bottom plate comprises a fixed bottom plate and a floating bottom plate, the fixed bottom plate is fixedly connected with the frame, and the fixed bottom plate is connected with the floating bottom plate through the suspension device to form a deformable bottom plate suspension structure; the utility model discloses a set up the bottom plate into PMKD and floating bottom plate to link together it through simple linkage, the stability of the mecanum wheel of realization contacts to earth.

Drawings

Fig. 1 is a three-dimensional view of the present invention;

fig. 2 is a top view of the present invention;

fig. 3 is a bottom view of the present invention;

fig. 4 is an exploded view of the present invention;

fig. 5 is a top view of the interior of the present invention.

The main element symbols are as follows:

1. a frame; 2. a wheel; 3. a base plate; 4. a drive motor; 5. a rotating shaft; 6. a spring plate; 7. fixing the bottom plate; 8. a floating bottom plate; 9. a limiting groove; 10. and a limiting screw.

Detailed Description

In order to make the present invention clearer, the present invention will be further described with reference to the accompanying drawings.

Referring to fig. 1-5, the present invention relates to a trolley with a suspension structure on the chassis, which comprises a frame 1, a bottom plate 3, a driving motor 4 and wheels 2, wherein the driving motor 4 is connected to the wheels 2 via a rotating shaft 5, the wheels 2 are mecanum wheels, the mecanum wheels have compact structure and flexible movement, and are successful omnidirectional wheels; 4 novel wheels are combined, so that the omnibearing moving function can be realized more flexibly and conveniently; the Mecanum wheels need four wheels to stably touch the ground when in operation; if the four wheels cannot stably touch the ground, the advantages of accurate orientation and fixed-distance movement of the Mecanum wheels cannot be exerted; the number of the driving motors 4 is 4, each driving motor 4 independently controls one Mecanum wheel, and the driving motors are divided into two groups which are respectively arranged on the bottom plate 3; the bottom plate 3 is divided into a fixed bottom plate 7 and a floating bottom plate 8, and the fixed bottom plate 7 is fixedly connected with the frame 1; the bottom plate 3 is also provided with a suspension device, the fixed bottom plate 7 is connected with the floating bottom plate 8 through the suspension device, the suspension device is substantially an I-shaped elastic sheet 6, one transverse end of the elastic sheet 6 is fixedly connected with the fixed bottom plate 7 through a screw, and the other transverse end is also fixedly connected with the floating bottom plate 8 through a screw, so that a variable chassis structure is formed.

In order to prevent the elastic sheet 6 from generating irreversible plastic deformation due to overlarge moving amplitude, two sides of the floating bottom plate 8 close to the frame 1 are also provided with limit grooves 9, the frame 1 is provided with limit screw 10 holes corresponding to the limit grooves 9, and the limit screws 10 are screwed in from the positions and penetrate through the limit grooves 9, so that the displacement of the floating bottom plate 8 in the vertical direction is limited, the deformation of the elastic sheet 6 is within an acceptable range, and the irreversible deformation is avoided.

One embodiment mentions: the fixed bottom plate 7 and the floating bottom plate 8 can be arranged in a plurality of setting modes, wherein one setting mode is as follows: the fixed bottom plate 7 is arranged at the front end of the chassis of the frame 1, the fixed bottom plate 7 is fixedly connected with the frame 1, the group of driving motors 4 and the wheels 2 are arranged on the fixed bottom plate 7 at the front end, the floating bottom plate 8 is arranged at the rear end of the frame 1, the group of driving motors 4 and the wheels 2 are arranged on the floating bottom plate 8 at the rear end, and the fixed bottom plate is connected with the floating bottom plate 8 through the group of elastic pieces 6.

One embodiment mentions: the fixed bottom plate 7 and the floating bottom plate 8 can be arranged in a plurality of setting modes, wherein one setting mode is as follows: the fixed bottom plate 7 is arranged at the rear end of the chassis of the frame 1, the fixed bottom plate 7 is fixedly connected with the frame 1, the group of driving motors 4 and the wheels 2 are arranged on the fixed bottom plate 7 at the rear end, the floating bottom plate 8 is arranged at the front end of the frame 1, the group of driving motors 4 and the wheels 2 are arranged on the floating bottom plate 8 at the front end, and the fixed bottom plate is connected with the floating bottom plate 8 through the group of elastic pieces 6.

One embodiment mentions: the fixed bottom plate 7 and the floating bottom plate 8 can be arranged in a plurality of setting modes, wherein one setting mode is as follows: the fixed bottom plate 7 is arranged at the middle position of the chassis of the frame 1, the floating bottom plates 8 are arranged at two ends of the fixed bottom plate 7 respectively, namely the front end position and the rear end position of the chassis of the frame 1 are divided into a front floating bottom plate 8 and a rear floating bottom plate 8, the two sets of driving motors 4 and the wheels 2 are arranged on the front floating bottom plate 8 in a set mode, the other set of driving motors is arranged on the rear floating bottom plate 8, and the two floating bottom plates 8 are connected with the fixed bottom plate 7 at the middle position through the two sets of elastic pieces 6. The mode that this kind of bottom plate 3 set up and two linkage that set up can make 4 wheels of bottom plate all can take place deformation for the dolly can adapt to more complicated topography.

One embodiment mentions: the chassis of the trolley with the suspension structure of the utility model is made of elastic material, either metal material or plastic material, wherein the elastic sheet 6 is made of elastic material; when the trolley passes through the road surfaces with different heights, the elastic sheet 6 is twisted, and the floating bottom plate 8 can change the height under the action of the elastic sheet 6 to adapt to different ground heights; the bearing capacity and the requirement on the suspension device required by the mecanum wheel trolley for teaching are not high, the structure required by selection of the complex suspension device is complex, the production is difficult, the cost is high, the simple elastic sheet 6 suspension device is simple in structure, the practicability is high, and the production cost is low.

The utility model has the advantages that:

1. the chassis is provided with the fixed bottom plate and the floating bottom plate, and the fixed bottom plate and the floating bottom plate are connected together through the suspension device to form a suspension structure, so that four wheels of the Mecanum wheel can be grounded simultaneously.

2. The elastic pieces are arranged as the suspension devices, so that the assembly is simple, the cost is low, and the production speed is high.

The above disclosure is only for the specific embodiments of the present invention, but the present invention is not limited thereto, and any changes that can be made by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A trolley with a chassis having a suspension structure comprises a frame, a bottom plate, a driving motor and wheels, wherein the driving motor is fixed on the bottom plate and is connected with the wheels through a rotating shaft; the method is characterized in that: the suspension device is further included, the bottom plate comprises a fixed bottom plate and a floating bottom plate, the fixed bottom plate is fixedly connected with the frame, and the fixed bottom plate is connected with the floating bottom plate through the suspension device to form a deformable bottom plate suspension structure.

2. The cart having a chassis with a suspended structure according to claim 1, wherein: the suspension device is an elastic sheet, the elastic sheet is arranged to be of an I-shaped structure, one transverse end of the elastic sheet is connected with the fixed bottom plate through a screw, and the other transverse end of the elastic sheet is connected with the floating bottom plate.

3. The cart having a chassis with a suspended structure according to claim 2, wherein: the elastic sheet is made of elastic materials, and can quickly recover the original shape after plastic deformation.

4. The cart having a chassis with a suspended structure according to claim 1, wherein: the floating bottom plate is further provided with a limiting groove, a limiting screw is installed at the position, opposite to the limiting groove, of the frame, and the limiting screw penetrates through the limiting groove and limits displacement of the floating bottom plate in the vertical direction.

5. The cart having a chassis with a suspended structure according to claim 1, wherein: the bottom plate divide into preceding bottom plate and back bottom plate, driving motor sets up 4 at least, and every driving motor independently drives a wheel, driving motor divide into two sets ofly set up respectively on preceding bottom plate and back bottom plate.

6. The cart having a chassis with a suspended structure according to claim 5, wherein: the front bottom plate is a fixed bottom plate, and the rear bottom plate is a floating bottom plate.

7. The cart having a chassis with a suspended structure according to claim 5, wherein: the front bottom plate is a floating bottom plate, and the rear bottom plate is a fixed bottom plate.

8. The cart having a chassis with a suspended structure according to claim 5, wherein: the bottom plate also comprises a middle bottom plate, the front bottom plate and the rear bottom plate are floating bottom plates, and the middle bottom plate is a fixed bottom plate.

9. The cart having a chassis with a suspended structure according to claim 1, wherein: the wheels are mecanum wheels that can be precisely oriented and distance moved.

10. The cart having a chassis with a suspended structure according to claim 1, wherein: the frame still includes the roof board, the roof board is provided with the extension mouth that is used for the extension installation.