Lifting mechanism capable of adjusting height by swinging wheels

Abstract

The utility model provides a lifting mechanism capable of adjusting height by swinging wheels, and relates to the technical field of omnidirectional wheels. The device is installed on a frame and comprises a connecting rotating shaft, the connecting rotating shaft is rotationally connected to the frame, and wheel sets are eccentrically installed at the two ends of the connecting rotating shaft; and the driving module is mounted on the frame and drives the connecting rotating shaft to rotate. The driving module is horizontally installed, the vertical arrangement space is saved, the connecting rotating shaft is driven to rotate, and the wheel sets at the two ends are synchronously driven to swing up and down; the elastic assembly is mainly used for guaranteeing that the wheel set makes full contact with the ground, and the included angle between the wheel set and the ground continuously adapts to change in the swinging process. On the whole, the structure arrangement space can be effectively saved, and it is guaranteed that the wheel sets make full contact with the ground.

Description

Technical Field

[0001] The utility model relates to the technical field of omnidirectional wheels, in particular to a lifting mechanism capable of adjusting height by swinging wheels. Background Art

[0002] Most height adjustment solutions on the market use vertical guide rails and screws, which require a screw to be arranged vertically at the geometric center to adjust the height. This has the problems of occupying vertical space, occupying too much structural layout space, and unstable contact between the omnidirectional wheels and the ground.

[0003] Therefore, there is an urgent need for a lifting mechanism that can effectively save structural layout space and ensure that the wheel set is in full contact with the ground and adjust the height by swinging the wheels. Utility Model Content

[0004] The purpose of this utility model is to provide a lifting mechanism that adjusts height by swinging wheels, resolving the technical problems of the prior art, such as excessive structural space occupation and unstable contact between the omnidirectional wheels and the ground. The various technical effects of the preferred technical solution among the various technical solutions provided by this utility model are detailed below.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] The utility model provides a lifting mechanism for adjusting the height by swinging wheels, which is installed on a vehicle frame and includes:

[0007] A connecting shaft, the connecting shaft being rotatably connected to the frame, and the wheel sets being eccentrically mounted at both ends of the connecting shaft;

[0008] A driving module is installed on the vehicle frame and drives the connecting shaft to rotate.

[0009] Preferably, it also includes:

[0010] An elastic component is hingedly connected between the side wall of the connecting shaft and the vehicle frame.

[0011] Preferably, it also includes:

[0012] Sensors, several sensors are used to detect the movement status of the driving module and the connecting shaft.

[0013] Preferably, it also includes:

[0014] a first connecting block, wherein a first end of the first connecting block is fixedly sleeved on the connecting shaft;

[0015] A first connecting rod is hinged between the second end of the first connecting block and the telescopic end of the driving module.

[0016] Preferably, it also includes:

[0017] The second connecting block has a first end fixedly sleeved on the connecting shaft, and the elastic component is hinged between the second end of the second connecting block and the vehicle frame.

[0018] Preferably, the elastic component includes:

[0019] A spring, wherein both ends of the spring are respectively hinged to the second end of the second connecting block and the vehicle frame.

[0020] Preferably, it also includes:

[0021] a second connecting rod, wherein a first end of the second connecting rod is fixedly connected to the first end of the spring, and a second end of the second connecting rod is hinged to the second end of the second connecting block;

[0022] A third connecting rod, wherein a first end of the third connecting rod is hinged on the vehicle frame, a second end of the third connecting rod is fixedly connected to the second end of the spring, and the third connecting rod, the spring and the second connecting rod are arranged in a colinear manner.

[0023] Preferably, it also includes:

[0024] The spring is located in the sleeve, and the two ends of the sleeve are axially sleeved on the first end of the second connecting rod and the second end of the third connecting rod respectively.

[0025] The technical solution provided by this utility model utilizes a horizontally mounted drive module, saving vertical layout space. The drive shaft rotates, synchronously driving the wheels at both ends to swing up and down. The elastic component's primary function is to ensure that the wheels maintain full contact with the ground, continuously adapting to changes in their angle with the ground during the swinging process. Overall, this application effectively saves structural layout space while ensuring full contact between the wheels and the ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0028] Figure 2 This is a schematic diagram of the drive module of the utility model in an extended state;

[0029] Figure 3 This is a schematic diagram of the drive module of the utility model in a shortened state;

[0030] Figure 4 This is a schematic diagram of the state of the elastic component of the utility model when the wheel set is swinging upward;

[0031] Figure 5 This is a schematic diagram of the state of the elastic component when the wheel set of the utility model is swinging downward.

[0032] In the figure, 1 is the driving module; 2 is the linear displacement sensor; 3 is the connecting shaft; 4 is the first connecting rod; 5 is the sleeve; 6 is the wheel assembly; 7 is the first connecting block; 8 is the second connecting rod; 9 is the second connecting block; 10 is the third connecting rod. DETAILED DESCRIPTION

[0033] To make the purpose, technical solution, and advantages of the present invention more clear, the technical solution of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0034] refer to Figure 1-5 The specific embodiment of the utility model provides a lifting mechanism for adjusting the height by swinging wheels, which is installed on a vehicle frame and includes:

[0035] A connecting shaft 3 is rotatably connected to the vehicle frame, and a wheel set 6 is eccentrically mounted at both ends of the connecting shaft 3;

[0036] The driving module 1 is horizontally mounted on the vehicle frame and drives the connecting shaft 3 to rotate.

[0037] Most height adjustment solutions on the market use a vertical guide screw method, which requires a screw to be arranged vertically at the geometric center to adjust the height. This has the problem of occupying too much vertical space, occupying too much structural layout space, and unstable contact between the omnidirectional wheels and the ground. In this application, by adopting a horizontal installation method for the drive module 1, vertical layout space is saved, the drive connecting shaft 3 is driven to rotate, and the wheel sets 6 at both ends are synchronously driven to swing up and down. Overall, this application can effectively save structural layout space and ensure that the wheel sets 6 are in full contact with the ground. The wheel sets 6 can be omnidirectional wheels.

[0038] Further optimization plans also include:

[0039] The elastic component is hingedly connected between the side wall of the connecting shaft 3 and the vehicle frame.

[0040] The main function of the elastic component is to ensure that the wheel set 6 is in full contact with the ground and adapts to changes in the angle with the ground during the swinging process. The elastic component can be a torsion spring installed on the connecting shaft 3. During the rotation of the connecting shaft 3, the torsion spring constantly generates a reverse force on the connecting shaft 3 to ensure that the wheel set 6 is in full contact with the ground.

[0041] Further optimization plans also include:

[0042] Sensors, including several sensors, are used to detect the motion status of the driving module 1 and the connecting shaft 3 .

[0043] The driving module 1 adopts one of an electric push rod, a hydraulic cylinder, and a telescopic cylinder.

[0044] The sensors include: a linear displacement sensor 2 and an angle encoder. The two sets of linear displacement sensors 2 are respectively installed on the driving module 1 and are set corresponding to the extension or contraction limit positions of the driving module 1.

[0045] When the driving module 1 runs to the extension or retraction limit position, the linear displacement sensor 2 is triggered, and a stop or reverse operation signal is sent to the driving module 1 through the PLC controller to ensure that the driving module 1 moves within the limit range, which plays a protective role; at the same time, the PLC controller can convert the rotation position information of the connecting shaft 3 according to the signal of the linear displacement sensor 2; in this process, the induction trigger is highly reliable and stable; the angle encoder can be installed between the connecting shaft 3 and the frame, and can obtain the signal of the rotation angle of the connecting shaft 3, and transmit the signal to the PLC controller, which is mainly used to monitor the rotation angle of the connecting shaft 3; the relative position of the wheel group 6 and the frame is obtained through the rotation angle of the connecting shaft 3, thereby determining the lifting height of the head of the vehicle on the frame.

[0046] Further optimization plans also include:

[0047] A first connecting block 7, a first end of the first connecting block 7 is fixedly sleeved on the connecting shaft 3;

[0048] The first connecting rod 4 is hinged between the second end of the first connecting block 7 and the telescopic end of the driving module 1 .

[0049] After the driving module 1 is extended, the first connecting block 7 is pushed by the first connecting rod 4, so that the first connecting block 7 and the connecting shaft 3 rotate around the axis of the connecting shaft 3 by a certain angle, driving the wheel set 6 to swing toward the frame, that is, upward.

[0050] Further optimization plans also include:

[0051] The second connecting block 9 has a first end fixedly sleeved on the connecting shaft 3 , and the elastic component is hinged between the second end of the second connecting block 9 and the vehicle frame.

[0052] During the extension of the driving module 1, the connecting shaft 3 will be driven to rotate, and the wheel set 6 will be driven to swing upward, and the second connecting block 9 will rotate around the connecting shaft 3 synchronously. At this time, the elastic component continues to be stretched; during the shortening of the driving module 1, the connecting shaft 3 will be driven to rotate, and the wheel set 6 will be driven to swing downward. At this time, the elastic component continues to be stretched, but the degree of stretching is reduced (appropriate relaxation); during the contact between the wheel set 6 and the ground, the elastic component helps the wheel set 6 to fully contact the ground; the elastic component can be an elastic rubber belt, which is installed between the second end of the second connecting block 9 and the frame.

[0053] To further optimize the solution, in addition to the above-mentioned torsion spring and elastic rubber belt, the elastic component can also be:

[0054] The spring has two ends hinged to the second end of the second connecting block 9 and the vehicle frame respectively.

[0055] During the entire swinging process of the wheel set 6, the elastic component is always in a stretched state.

[0056] Further optimization plans also include:

[0057] a second connecting rod 8, wherein a first end of the second connecting rod 8 is fixedly connected to the first end of the spring, and a second end of the second connecting rod 8 is hinged to the second end of the second connecting block 9;

[0058] A third connecting rod 10, wherein a first end of the third connecting rod 10 is hinged to the vehicle frame, a second end of the third connecting rod 10 is fixedly connected to the second end of the spring, and the third connecting rod 10, the spring and the second connecting rod 8 are arranged collinearly;

[0059] The sleeve 5, the spring is located in the sleeve 5, and the two ends of the sleeve 5 are axially sleeved on the first end of the second connecting rod 8 and the second end of the third connecting rod 10 respectively.

[0060] This arrangement can ensure that the connection between the spring, the second connecting block 9 and the frame is stable during the stretching or relaxation process, thereby ensuring that the wheel set 6 continues to be close to the ground within the movement limit range during the entire height adjustment process.

[0061] Further optimization plans also include:

[0062] The swing arm (not marked in the figure) has a first end fixedly sleeved on the connecting shaft 3 and an angle set between the first end and the connecting shaft 3, so that the connecting shaft 3 drives the wheel set 6 to swing during the rotation process, and the second end of the swing arm is rotationally connected to the wheel set 6, that is, the wheel set 6 is eccentrically installed at both ends of the connecting shaft 3 through the swing arm.

[0063] The driving module 1 can also be a motor, and the connecting shaft 3 is driven by the motor. The driving method can be a conventional gear transmission. The angle encoder can be installed on the motor to detect the rotation state of the motor and then reflect the corresponding rotation angle of the connecting shaft 3.

[0064] It should be noted that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like used herein to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are intended only to facilitate the description of this application and to simplify the description, and do not indicate or imply 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 limiting this application. In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0065] It should also be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0066] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A lifting mechanism that adjusts the height by swinging wheels, mounted on a vehicle frame, characterized in that: include: A connecting shaft (3) is rotatably connected to the vehicle frame, and a wheel set (6) is eccentrically mounted on both ends of the connecting shaft (3); A driving module (1) is mounted on the vehicle frame and drives the connecting shaft (3) to rotate.

2. The lifting mechanism for adjusting height by swinging wheels according to claim 1, characterized in that: Also includes: An elastic component is hingedly connected between the side wall of the connecting shaft (3) and the vehicle frame.

3. The lifting mechanism for adjusting height by swinging wheels according to claim 1, characterized in that: Also includes: Sensors, wherein a plurality of sensors are used to detect the motion state of the driving module (1) and the connecting shaft (3).

4. The lifting mechanism for adjusting height by swinging wheels according to claim 1, characterized in that: Also includes: a first connecting block (7), wherein a first end of the first connecting block (7) is fixedly sleeved on the connecting shaft (3); A first connecting rod (4), the first connecting rod (4) is hinged between the second end of the first connecting block (7) and the telescopic end of the driving module (1).

5. The lifting mechanism for adjusting height by swinging wheels according to claim 2, characterized in that: Also includes: A second connecting block (9), wherein a first end of the second connecting block (9) is fixedly sleeved on the connecting shaft (3), and the elastic component is hinged between a second end of the second connecting block (9) and the vehicle frame.

6. The lifting mechanism for adjusting height by swinging wheels according to claim 5, characterized in that: The elastic component comprises: A spring, wherein both ends of the spring are respectively hinged to the second end of the second connecting block (9) and the vehicle frame.

7. The lifting mechanism for adjusting height by swinging wheels according to claim 6, characterized in that: Also includes: a second connecting rod (8), wherein a first end of the second connecting rod (8) is fixedly connected to a first end of the spring, and a second end of the second connecting rod (8) is hinged to a second end of the second connecting block (9); A third connecting rod (10), wherein a first end of the third connecting rod (10) is hinged on the vehicle frame, a second end of the third connecting rod (10) is fixedly connected to a second end of the spring, and the third connecting rod (10), the spring and the second connecting rod (8) are arranged colinearly.

8. The lifting mechanism for adjusting height by swinging wheels according to claim 7, characterized in that: Also includes: A sleeve (5), the spring is located in the sleeve (5), and the two ends of the sleeve (5) are axially sleeved on the first end of the second connecting rod (8) and the second end of the third connecting rod (10) respectively.

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