Power-assisted carrying device

Abstract

The invention discloses a power-assisted carrying device, relates to the technical field of transportation equipment, abandons a traditional speed adjusting mode of a rotating handle, adopts a button to perform speed selection control, has two speed adjusting modes of gear speed adjusting and continuous speed adjusting, and is combined with speed feedback of a motor to ensure that the movement speed of a cart is stable and controllable. Meanwhile, the power-assisted carrying device is stable in running speed, easy to operate and capable of effectively solving the material transportation problem under the environments such as short-distance rugged mountain road surfaces and narrow roadways.

Description

Technical Field

[0001] The invention relates to the technical field of transportation equipment, and in particular to a power-assisted transport device adopting button speed regulation. Background Art

[0002] Traditional short-distance material transportation is mainly achieved through small cars, electric tricycles or rickshaws. These traditional transportation methods have the following characteristics:

[0003] 1. Small car transportation, advantages: strong transportation capacity, cargo weight is generally within 5 tons; fast speed, running speed is generally within 80km / h; long transportation journey. Disadvantages: generally can only run on paved roads, and has high requirements for the operating road environment.

[0004] 2. Electric tricycle transportation, advantages: strong transportation capacity, cargo weight is generally within 600kg; fast speed, running speed is generally within 40km / h; long transportation distance, can meet the transportation needs within the city or between towns. Disadvantages: can be used for transportation on ordinary unpaved roads, but cannot be used on narrow and rugged roads.

[0005] 3. Rickshaw, Advantages: Very low environmental requirements, can be transported on narrow and rugged roads. Disadvantages: Very weak transport capacity, generally within 50kg.

[0006] It can be seen that traditional electric carts all use rotating handles to adjust the speed. This operation method is suitable for the situation where the operator sits on the cart and moves with the cart. However, the use scenario of electric carts is that the operator holds the handles with both hands and walks with the cart. When encountering rugged and complex roads, the ups and downs of the cart will cause the operator's hands to be disturbed by external forces, resulting in misoperation of the rotating handle, and in severe cases, the cart will lose control.

[0007] Therefore, how to provide a transportation tool with strong transportation capacity, which can be used in rugged mountain roads, narrow alleys and other environments, and has high safety, is a technical problem that urgently needs to be solved by technical personnel in this field. Summary of the invention

[0008] In view of the above problems, the present invention provides a power-assisted transport device for overcoming the above problems or at least partially solving the above problems. The device can be used for transporting materials in complex environments such as short-distance rugged mountain roads and narrow alleys. The device abandons the traditional speed adjustment method of rotating the handle and adopts a button for speed selection control. It has two speed control methods: gear speed regulation and continuous speed regulation. The running speed is stable and the operation is simple.

[0009] The present invention provides the following scheme:

[0010] A power-assisted carrying device, comprising:

[0011] A vehicle frame, wherein the vehicle frame is connected with a walking power-assisting mechanism;

[0012] A walking wheel set, the walking wheel set is connected to the frame and is cooperatively connected to the walking assist mechanism;

[0013] The frame includes a first gripping handle and a second gripping handle, the first gripping handle is provided with a direction selection switch and a speed adjustment button mechanism; the direction selection switch and the speed adjustment button mechanism are both communicatively connected with the walking assist mechanism through a controller; the second gripping handle is provided with a brake mechanism;

[0014] After the direction selection switch is triggered by the user, the controller is used to determine the movement direction of the walking wheel set, and control the walking power-assisting mechanism to provide power-assisting torque in the same direction according to the movement direction;

[0015] After the speed regulating button mechanism is triggered by a user by a pressing operation, the controller is used to determine the speed regulating mode, and adjust the power output of the walking power-assisting mechanism according to the speed regulating mode to achieve the adjustment of the running speed of the walking wheel set.

[0016] Preferably, the speed adjustment button mechanism includes a speed increase button and a speed decrease button.

[0017] Preferably: the first holding handle further includes a pressure switch, and the pressure switch is connected to the controller;

[0018] The controller is also used to determine that the pressure switch is triggered and the direction selection switch and the corresponding speed adjustment button are triggered to control the walking assist mechanism to output power;

[0019] The controller is also used to control the walking assist mechanism to stop power output after determining that the triggering of the pressure switch is completed or the brake mechanism is triggered.

[0020] Preferably: it also includes a power supply mechanism, and the power supply mechanism is connected to the power input terminal of the controller.

[0021] Preferably: the walking assist mechanism includes a brushless DC motor, the brushless DC motor is connected to a Hall speed sensor, and the controller is also used to receive the Hall speed feedback signal of the brushless DC motor collected by the Hall speed sensor, so as to stabilize the movement speed of the carrier under different load conditions through closed-loop control.

[0022] Preferably, the upper portion of the frame is used to be connected to different carriers.

[0023] According to the specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0024] The embodiment of the present application provides a power-assisted transport device, which abandons the traditional speed adjustment method of rotating the handle, adopts a button for speed selection control, has two speed adjustment methods: gear speed adjustment and continuous speed adjustment, and combines the speed feedback of the motor to ensure that the movement speed of the cart is stable and controllable. At the same time, the power-assisted transport device has a stable running speed and is easy to operate, which can effectively solve the problem of material transportation in environments such as short-distance rugged mountain roads and narrow alleys.

[0025] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. 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 drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 is a block diagram of a power-assisted transport device provided by an embodiment of the present invention;

[0028] Figure 2 It is a schematic diagram of the appearance of an assisted transport device provided in an embodiment of the present invention.

[0029] In the figure: a vehicle frame 1, a first holding handle 11, a second holding handle 12, a walking assist mechanism 2, a walking wheel set 3, a direction selection switch 4, a speed control button mechanism 5, a brake mechanism 6, a controller 7, a pressure switch 8, and a power supply mechanism 9. DETAILED DESCRIPTION

[0030] The technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all of the embodiments. Based on the embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0031] See also Figure 1 , Figure 2 , is a power-assisted transport device provided by an embodiment of the present invention, such as Figure 1 , Figure 2 As shown, the device may include:

[0032] A vehicle frame 1, wherein the vehicle frame 1 is connected to a walking assist mechanism 2;

[0033] A walking wheel set 3, the walking wheel set 3 is connected to the frame 1 and is cooperatively connected to the walking assist mechanism 2;

[0034] The frame 1 includes a first gripping handle 11 and a second gripping handle 12, the first gripping handle 11 is provided with a direction selection switch 4 and a speed adjustment button mechanism 5; the direction selection switch 4 and the speed adjustment button mechanism 5 are both communicatively connected with the walking assist mechanism 2 through a controller 7; the second gripping handle 12 is provided with a brake mechanism 6;

[0035] After the direction selection switch 4 is triggered by the user, the controller 7 is used to determine the movement direction of the walking wheel set 3, and control the walking power-assisting mechanism 2 to provide power-assisting torque in the same direction according to the movement direction;

[0036] After the speed adjustment button mechanism 5 is triggered by the user by a pressing operation, the controller 7 is used to determine the speed adjustment mode, and adjust the power output of the walking assist mechanism 2 according to the speed adjustment mode to achieve the adjustment of the running speed of the walking wheel set 3.

[0037] The power-assisted transport device provided in the embodiment of the present application aims to overcome the shortcomings of traditional short-distance transport methods and provides an all-terrain power-assisted transport device that can transport heavier materials on complex roads such as rugged mountain roads and narrow alleys. The power-assisted transport device adopts a cart form and abandons the traditional speed adjustment method of rotating the handle. It adopts a button for speed selection control and has two speed control methods: gear speed regulation and continuous speed regulation. The running speed is stable. It is mainly used in scenes such as short-distance material and personnel transportation, and has the characteristics of stable speed, all-terrain adaptability, and strong obstacle crossing ability.

[0038] In order to facilitate speed adjustment during the pushing process, the embodiment of the present application can provide that the speed adjustment button mechanism 5 includes a speed increase button and a speed decrease button. The speed increase and speed decrease buttons are independently set to ensure that the user can accurately adjust the speed during the pushing process.

[0039] In order to further improve the reliability of the device and prevent misoperation, the embodiment of the present application may further provide that the first holding handle 11 also includes a pressure switch 8, and the pressure switch 8 is connected to the controller 7;

[0040] The controller 7 is also used to determine that the pressure switch 8 is triggered and the direction selection switch 4 and the corresponding speed adjustment button are triggered to control the walking assist mechanism 2 to output power;

[0041] The controller 7 is also used to control the walking assist mechanism 2 to stop power output after determining that the pressure switch 8 is triggered or the brake mechanism 6 is triggered.

[0042] In order to facilitate power supply, the embodiment of the present application may provide a power supply mechanism 9, and the power supply mechanism 9 is connected to the power input terminal of the controller 7. The power supply mechanism 9 may be a rechargeable battery.

[0043] In order to achieve precise adjustment of the speed, the embodiment of the present application may also provide that the walking assistance mechanism 2 includes a DC brushless motor, the DC brushless motor is connected to a Hall speed sensor, and the controller 7 is also used to receive the Hall speed feedback signal of the DC brushless motor collected by the Hall speed sensor, so as to stabilize the movement speed of the carrier under different load conditions through closed-loop control.

[0044] The following uses a brushless DC motor as a driving mechanism as an example to introduce the power-assisted transport device provided in the present application in detail.

[0045] The power-assisted transport device is mainly composed of a frame, a controller, a control module, a brake mechanism 6, a DC brushless motor, a battery pack and a mechanical structure. The frame and the running wheel group are combined to form an integrated structure in the form of a cart.

[0046] The power-assisted transport device has a two-wheel structure and adopts a high-speed, high-power DC brushless motor control system as a walking power-assisted mechanism. It is suitable for a variety of complex environments and has a variety of uses. It can be equipped with different vehicles to transport different types of materials.

[0047] The power-assisted transport device is generally operated by a single person. The operator holds the left and right handles with his left and right hands respectively to operate. The left handle (the second holding handle 12) is the brake control handle, and the right handle (the first holding handle 11) is the motion control handle. When the operator holds the handle, the pressure switch 8 inside the motion control handle is activated, and the power-assisted transport device enters the state of preparing for movement. At this time, the operator selects the direction of movement through the direction selection switch 4 on the motion control handle, presses the speed-up button to start the movement, and controls the speed of the power-assisted transport device by pressing the speed-up or speed-down button during the movement. During the movement, the movement of the cart can be stopped by releasing the motion control handle or pressing the brake.

[0048] The controller 7 is the control core of the power-assisted carrier, which integrates the DC brushless motor drive and related control logic. After receiving the signals from the control module and the brake mechanism 6, the controller 7 controls the rotation direction and speed of the DC brushless motor to realize the movement of the cart. At the same time, the controller 7 also receives the Hall speed feedback signal of the DC brushless motor, and ensures the stability of the movement speed of the cart under different load conditions through closed-loop control.

[0049] The control module is integrated on the right handle of the cart, and mainly includes a direction selection switch 4, a speed adjustment button and a pressure switch 8. The direction selection switch 4 is used to select the direction of movement of the cart. The speed adjustment button is used to adjust the movement speed of the cart. The pressure switch 8 is used to detect whether the person is holding the handle to control the start and stop of the cart.

[0050] The brake mechanism 6 is used to control the braking function of the power-assisted carrier, which mainly includes hydraulic brake and brake signal generation. When the brake handle is pressed, the hydraulic brake circuit directly applies braking force to the moving wheel to achieve the braking function. At the same time, after the controller 7 detects that the switch in the brake handle is closed, it controls the motor to decelerate until the cart stops moving.

[0051] The block diagram of the power-assisted carrier is as follows: Figure 1 The schematic diagram of the power-assisted carrier is shown in Figure 2 shown.

[0052] The speed control methods of the power-assisted carrier are divided into two modes: gear and continuous speed regulation, which are described as follows:

[0053] 1. Gear speed regulation.

[0054] The operator selects the movement speed by short pressing the speed adjustment button. The operation process is as follows:

[0055] Grip the control handle tightly, and the strain gauge inside the handle senses that the person is ready to move after gripping the handle tightly;

[0056] Select the direction by the direction selection switch 4;

[0057] Press the speed-up button of the speed adjustment button and release it within 0.5s, and the power-assisted carrier moves at the first gear speed;

[0058] Press the speed-up button of the speed adjustment button again and release it within 0.5s, and the power-assisted carrier moves at the 2nd speed;

[0059] Press the speed-up button of the adjustment button again, and the power-assisted carrier will continue to shift up to the highest gear;

[0060] After pressing the deceleration button and releasing it within 0.5s, the speed of the power-assisted carrier is reduced by 1 gear;

[0061] At the 1st speed, press the deceleration button and release it within 0.5s, and the cart stops;

[0062] At any speed, the power-assisted carrier stops moving when the handle is released.

[0063] 2. Continuous speed regulation.

[0064] The operator selects the movement speed by long pressing the speed adjustment button. The operation process is as follows:

[0065] Grip the control handle tightly, and the strain gauge inside the handle senses that the person is ready to move after gripping the handle tightly;

[0066] Select the direction by the direction selection switch 4;

[0067] After the speed-up button of the speed adjustment button is kept pressed for more than 0.5 seconds, the power-assisted carrier slowly accelerates;

[0068] When the speed reaches the ideal speed, release the speed adjustment button and the cart will keep moving at the current speed;

[0069] If the speed-up button of the adjustment button is pressed again for more than 0.5s, the cart speed will continue to increase until it reaches the highest speed gear.

[0070] After the deceleration button is pressed for more than 0.5s, the speed of the power-assisted carrier slowly decreases. During this period, if the deceleration button is released, the power-assisted carrier maintains the current speed.

[0071] Continue to press the deceleration button to stop the power-assisted carrier from moving;

[0072] At any speed, the power-assisted carrier stops moving when the handle is released.

[0073] In summary, the power-assisted transport device provided by the present application abandons the traditional speed adjustment method of rotating the handle, adopts a button for speed selection control, has two speed adjustment methods: gear speed adjustment and continuous speed adjustment, and combines the speed feedback of the motor to ensure the stability and controllability of the cart movement speed. At the same time, the power-assisted transport device has a stable running speed and is easy to operate, which can effectively solve the problem of material transportation in environments such as short-distance rugged mountain roads and narrow alleys.

[0074] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0075] It can be known from the description of the above implementation methods that those skilled in the art can clearly understand that the present application can be implemented by means of software plus a necessary general hardware platform. Based on such an understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product can be stored in a storage medium such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in the various embodiments of the present application or certain parts of the embodiments.

[0076] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can refer to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system or system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can refer to the partial description of the method embodiment. The system and system embodiments described above are merely schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without creative work.

[0077] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A power-assisted transport device, characterized in that: include: A vehicle frame, wherein the vehicle frame is connected with a walking power-assisting mechanism; A walking wheel set, the walking wheel set is connected to the frame and is cooperatively connected to the walking assist mechanism; The frame includes a first gripping handle and a second gripping handle, the first gripping handle is provided with a direction selection switch and a speed adjustment button mechanism; the direction selection switch and the speed adjustment button mechanism are both communicatively connected with the walking assist mechanism through a controller; the second gripping handle is provided with a brake mechanism; After the direction selection switch is triggered by the user, the controller is used to determine the movement direction of the walking wheel set, and control the walking power-assisting mechanism to provide power-assisting torque in the same direction according to the movement direction; After the speed regulating button mechanism is triggered by a user by a pressing operation, the controller is used to determine the speed regulating mode, and adjust the power output of the walking power-assisting mechanism according to the speed regulating mode to achieve the adjustment of the running speed of the walking wheel set.

2. The power-assisted carrying device according to claim 1, characterized in that: The speed adjustment button mechanism includes a speed increase button and a speed decrease button.

3. The power-assisted carrying device according to claim 1, characterized in that: The first holding handle further comprises a pressure switch, and the pressure switch is connected to the controller; The controller is also used to determine that the pressure switch is triggered and the direction selection switch and the corresponding speed adjustment button are triggered to control the walking assist mechanism to output power; The controller is also used to control the walking assist mechanism to stop power output after determining that the triggering of the pressure switch is completed or the brake mechanism is triggered.

4. The power-assisted carrying device according to claim 1, characterized in that: It also includes a power supply mechanism, which is connected to the power input terminal of the controller.

5. The power-assisted carrying device according to claim 1, characterized in that: The walking assist mechanism includes a brushless DC motor, which is connected to a Hall speed sensor. The controller is also used to receive a Hall speed feedback signal of the brushless DC motor collected by the Hall speed sensor, so as to stabilize the movement speed of the carrier under different load conditions through closed-loop control.

6. The power-assisted carrying device according to claim 1, characterized in that: The upper part of the frame is used to be connected to different carriers.

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