Differential steering pure electric shear forklift
By adopting electric cylinders and differential steering mechanisms in scissors trucks and abolishing the hydraulic system and traditional steering mechanisms, the problems of complex structure and easy pollution in existing scissors trucks are solved, and a simpler, cleaner and easy-to-maintenance scissors truck design is achieved.
Patent Information
- Application Number
- CN202323587703.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-26
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2033-12-26
AI Technical Summary
The existing forklifts are equipped with hydraulic systems and complex steering mechanisms, resulting in complex structure, difficult maintenance, easy to pollute the environment, and noisy, and are limited in use.
A differential steering pure electric forklift is designed, using electric cylinders as lifting drive parts, canceling the hydraulic system, and using the differential steering mechanism of the steering motor, the steering drive wheel and the controller for steering.
It realizes a forklift with a simple structure, clean and pollution-free, easy to repair and high reliability, avoids the disadvantages brought by hydraulic systems and traditional steering mechanisms, and is suitable for operating environments with high pollution control requirements.
Smart Images
Figure CN222665333U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of scissor lift trucks, in particular to a differential steering pure electric scissor lift truck. Background Art
[0002] In recent years, scissor lift trucks have been widely used in construction, municipal administration, telecommunications, airports, shipbuilding, factories, gardens, office buildings and other places. Existing scissor lift trucks include electrical systems and hydraulic systems. The lifting of scissor lift trucks is performed by lifting hydraulic cylinders as actuators, steering is performed by steering hydraulic cylinders as actuators, and driving is driven by hydraulic motors, which require hydraulic systems and steering mechanisms. The hydraulic system (a hydraulic system composed of hydraulic oil tanks, pumps, motors, motor controllers, valves, oil cylinders, filters, pipelines, etc.) has a complex structure, is difficult to maintain, has low efficiency, and is prone to leakage and environmental pollution. Especially in working environments with relatively high pollution control requirements such as telecommunications, airports, office buildings, and high-cleanliness workshops, traditional scissor lift trucks are prone to environmental pollution, have high noise, and are limited in use. The steering mechanism is mainly composed of steering tie rods, steering cylinders, steering knuckles, and steering valves. The structure is complex and a hydraulic system is still required.
[0003] Therefore, there is an urgent need to design a steerable scissor lift truck that can avoid the aforementioned problems. Utility Model Content
[0004] In view of the above problems existing in the prior art, it is intended to provide a pure electric scissor lift with differential steering.
[0005] The specific technical solutions are as follows:
[0006] A differential steering pure electric scissor lift truck, mainly comprising: a frame, a scissor lift frame, a lifting drive component, a working platform and a differential steering mechanism;
[0007] The scissor frame and the lifting drive component are arranged above the frame, the working platform is arranged on the scissor frame, the lifting drive component is arranged between the working platform and the frame, the differential steering mechanism includes a steering drive wheel, a steering motor and a controller, the steering drive wheel is arranged below the frame, each steering drive wheel is equipped with a steering motor, the steering motor is drivingly connected to the steering drive wheel, and the steering motor and the lifting drive component are electrically connected to the controller.
[0008] The above-mentioned differential steering pure electric scissor lift truck also has the following feature: the steering motor is mounted on the vehicle frame, and the output shaft of the steering motor is drivingly connected to the central shaft of the steering drive wheel.
[0009] The above-mentioned differential steering pure electric scissor lift truck also has the following characteristics: the differential steering mechanism also includes a reducer, the reducer is mounted on the frame, the steering drive wheel is mounted on the outer periphery of the reducer, the reducer is the central axis of the steering drive wheel, and the steering motor is mounted on the reducer.
[0010] The above-mentioned differential steering pure electric scissor lift truck also has the following feature: the differential steering mechanism further includes two driven wheels, and the driven wheels are arranged below the frame.
[0011] The above-mentioned differential steering pure electric scissor lift truck also has the feature that an electrical compartment is provided on the other side of the frame.
[0012] The above-mentioned differential steering pure electric scissor lift truck also has the following feature: the controller includes a first controller and a second controller, the steering motor is electrically connected to the first controller, and the lifting drive is electrically connected to the second controller.
[0013] The above-mentioned differential steering pure electric scissor lift truck also has the following feature: the first controller and the second controller are both electrically connected to a joystick, and the joystick is arranged on the differential steering pure electric scissor lift truck.
[0014] The positive effects of the above technical solution are:
[0015] The utility model provides a differential steering pure electric scissor lift truck, which is lifted by a lifting drive component and steered by a differential steering mechanism including a steering motor, a steering drive wheel and a controller. The lifting drive component uses an electric cylinder, so the hydraulic system can be completely avoided. The design of the differential steering mechanism eliminates the traditional steering mechanism, thereby avoiding various disadvantages caused by the provision of a hydraulic system and a steering mechanism in the background technology. The utility model has a simple structure, is clean and pollution-free, is easy to maintain, has high reliability, and has a broad market. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 A schematic diagram of the structure of a differential steering pure electric scissor lift truck provided by the utility model;
[0017] Figure 2 A schematic diagram of the assembly structure of the steering drive wheel and the steering motor reducer provided by the utility model;
[0018] Figure 3 A schematic diagram of the electrical principle of a differential steering pure electric scissor lift truck provided by the utility model.
[0019] In the attached figure: 1. frame; 2. scissor frame; 3. claw; 4. working platform; 5. steering drive wheel; 6. steering motor; 7. reducer; 8. driven wheel; 9. first controller; 10. second controller; 11. operating handle; 12. electrical compartment; 13. power supply; 14. insurance structure; 15. emergency stop switch. DETAILED DESCRIPTION
[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below through embodiments and in combination with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0021] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present utility model, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which 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 cannot be understood as a limitation to the present utility model.
[0022] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0023] See also Figures 1 to 3 The utility model discloses a differential steering pure electric scissor lift truck, comprising: a vehicle frame 1, a scissor lift frame 2, a lifting drive component, a working platform 4 and a differential steering mechanism;
[0024] The scissor frame 2 and the lifting drive component are arranged above the frame 1, the working platform 4 is arranged on the scissor frame 2, the lifting drive component is arranged between the working platform 4 and the frame 1, the differential steering mechanism includes a steering drive wheel 5, a steering motor 6 and a controller, the steering drive wheel 5 is arranged below the frame 1, each steering drive wheel 5 is equipped with a steering motor 6, the steering motor 6 is drivingly connected to the steering drive wheel 5, and the steering motor 6 and the lifting drive component are electrically connected to the controller.
[0025] Optionally, the lifting drive member is an electric cylinder 3, and a hydraulic cylinder is no longer used, thereby completely avoiding the use of a hydraulic system.
[0026] Optionally, one end of the lifting drive member is mounted on the vehicle frame 1, and the other end of the lifting drive member is connected to the working platform 4. Optionally, in this embodiment, in order to shorten the length of the lifting drive member, both ends of the lifting drive member are mounted on the scissor frame 2.
[0027] Optionally, in one embodiment, the steering motor 6 is mounted on the vehicle frame 1 , and the output shaft of the steering motor 6 is drivingly connected to the central shaft of the steering drive wheel 5 .
[0028] Optionally, in this embodiment, the differential steering mechanism further includes a reducer 7, which is mounted on the vehicle frame 1, and the steering drive wheel 5 is mounted on the outer periphery of the reducer 7, the reducer is the central axis of the steering drive wheel 5, and the steering motor 6 is mounted on the reducer 7. Figure 2 As shown, the reducer 7 is mounted on the outer plate of the frame 1 by means of fasteners such as bolts and screws, and the steering motor 6 is mounted on the reducer 7 by means of fasteners such as bolts and screws, wherein the steering motor 6 and the reducer 7 are respectively located on both sides of the outer plate of the frame 1, and the steering motor 6 can be hidden.
[0029] Optionally, the controller includes a first controller 9 and a second controller 10 , the steering motor 6 is electrically connected to the first controller 9 , and the lifting drive is electrically connected to the second controller.
[0030] Furthermore, the first controller 9 and the second controller 10 are both electrically connected to a joystick 11, and the joystick 11 is provided on the differential steering pure electric scissor lift truck. Optionally, in this embodiment, the working platform 4 is provided with a platform guardrail 41, and the joystick 11 can be provided on the platform guardrail 41 or the working platform 4.
[0031] The differential steering mechanism further includes two driven wheels 8 , which are arranged below the vehicle frame 1 .
[0032] In fact, there are four wheels in total, two of which are controlled by the steering motor 6 and the controller, and the operating handle 11 enables the scissor lift truck to move forward and backward. The differential steering principle means that during the driving of the scissor lift truck, the rotation speeds of the left and right steering drive wheels 5 are different through the control of the first controller 9, thereby achieving the steering of the vehicle, which mainly solves the problems of complex structure and high cost of the existing steering and traveling systems. After the operating handle 11 sends a steering command, the control system (first controller 9) controls the left and right steering drive wheels 5 to travel at different speeds according to the command signal, thereby achieving steering. The size of the turning radius is achieved by controlling the size of the signal controlled by the operating handle 11. The operating handle 11 can also control the extension or retraction of the electric cylinder 3, thereby achieving the lifting and lowering of the working platform 4. The operating handle 11 can switch functions. Such as Figure 3 As shown, the first controller 9, the second controller 10 and the operating handle 11 are connected to the main circuit, the main circuit includes a power supply 13, a fuse structure 14, an emergency stop switch 15 and a circuit body, the fuse structure 14 is electrically connected to the positive pole of the power supply 13, the emergency stop switch 15 is electrically connected to the fuse structure 14, the circuit body includes the first controller 9, the second controller 10 and the operating handle 11, the first controller 9 and the second controller 10 are arranged in parallel, the first controller 9 and the second controller 10 are both electrically connected to the operating handle 11, one end of the operating handle 11 is electrically connected to the negative pole of the power supply 13, and the other end of the operating handle 11 is electrically connected to the first controller 9 and the second controller 10 through two lines respectively.
[0033] The utility model eliminates the need for a hydraulic system and a conventional steering mechanism, and instead designs two steering drive wheels 5 with a differential function for steering. The conventional hydraulic system is eliminated, and an electric cylinder 3 is selected.
[0034] An electrical compartment 12 is provided on the other side of the frame 1. The main components of the electrical system are installed in the electrical compartment 12.
[0035] The utility model provides a differential steering pure electric scissor lift truck, which is lifted by a lifting drive component and steered by a differential steering mechanism including a steering motor 6, a steering drive wheel 5 and a controller. The lifting drive component uses an electric cylinder 3, so the hydraulic system can be completely avoided. The design of the differential steering mechanism cancels the traditional steering mechanism, thereby avoiding various disadvantages caused by the provision of a hydraulic system and a steering mechanism in the background technology. The utility model has a simple structure, is clean and pollution-free, is easy to maintain, has high reliability, and has a broad market.
[0036] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0037] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A differential steering pure electric scissor lift truck, characterized in that: include: Frame, scissor frame, lifting drive, working platform and differential steering mechanism; The scissor frame and the lifting drive component are arranged above the frame, the working platform is arranged on the scissor frame, the lifting drive component is arranged between the working platform and the frame, the differential steering mechanism includes a steering drive wheel, a steering motor and a controller, the steering drive wheel is arranged below the frame, each steering drive wheel is equipped with a steering motor, the steering motor is drivingly connected to the steering drive wheel, and the steering motor and the lifting drive component are electrically connected to the controller.
2. The differential steering pure electric scissor lift truck according to claim 1, characterized in that: The steering motor is mounted on the vehicle frame, and the output shaft of the steering motor is drivingly connected to the central shaft of the steering drive wheel.
3. The differential steering pure electric scissor lift truck according to claim 1, characterized in that: The differential steering mechanism also includes a reducer, which is mounted on the vehicle frame. The steering drive wheel is mounted on the periphery of the reducer. The reducer is the central axis of the steering drive wheel. The steering motor is mounted on the reducer.
4. The differential steering pure electric scissor lift truck according to any one of claims 1 to 3, characterized in that: The differential steering mechanism also includes two driven wheels, and the driven wheels are arranged below the frame.
5. The differential steering pure electric scissor lift truck according to any one of claims 1 to 3, characterized in that: An electrical compartment is arranged on the other side of the frame.
6. The differential steering pure electric scissor lift truck according to any one of claims 1 to 3, characterized in that: The controller includes a first controller and a second controller, the steering motor is electrically connected to the first controller, and the lifting drive is electrically connected to the second controller.
7. The differential steering pure electric scissor lift truck according to claim 6, characterized in that: The first controller and the second controller are both electrically connected to a joystick, and the joystick is arranged on the differential steering pure electric scissor lift truck.