System and method for lifting forklift cab

Abstract

The invention provides a forklift cab lifting system and method.The forklift cab lifting system comprises a control module, a power module and a lifting mechanism, the lifting mechanism is assembled on a forklift body, the cab is separated from the forklift body and assembled on the lifting mechanism, and the control module is installed in the cab and connected with the power module; the power module is an electrically-driven power module, and the power module is in driving connection with the lifting mechanism so as to lift the cab by driving the lifting mechanism. An operator can control the lifting operation of the cab by sitting in the cab. And the electrically-driven power module does not need to occupy an oil way interface of the forklift main body, so that the defects that the oil leakage risk is increased and the maintenance is complicated due to the addition of an interface of a hydraulic system are avoided.

Description

Technical Field

[0001] The present invention relates to the field of forklifts, and in particular to a system and method for lifting a forklift cab. Background Art

[0002] Forklifts are industrial handling vehicles, which refer to various wheeled handling vehicles for loading and unloading, stacking and short-distance transportation of palletized goods. When existing forklifts are carrying tall and large goods, especially during driving, the driver's vision is often blocked by the goods.

[0003] Existing vision improvement technologies mainly use cameras to image on the display screen, and some transmit blind spot vision through mirror reflection. Imaging through other devices such as cameras or mirrors cannot achieve the real visual effect seen by the human eye, and requires a certain amount of time to think and react.

[0004] In the prior art, industrial equipment such as excavators have hydraulic cab lifting functions. For example, the cab lifting in the forklift industry all uses hydraulic structures. The use of hydraulics to lift the cab requires the use of multi-way valve interfaces, which will occupy the oil circuit interfaces used by the attachments. Sometimes, it is even necessary to replace multi-way valves with more interfaces, which increases costs. It also makes the hydraulic system larger, increases the risk of oil leakage, and complicates maintenance. Summary of the invention

[0005] Therefore, in order to solve the above problems, the present invention provides a system and method for lifting a forklift cab.

[0006] To achieve the above purpose, the technical solution provided by the present invention is as follows:

[0007] A system for lifting a forklift cab comprises a control module, a power module and a lifting mechanism, wherein the lifting mechanism is mounted on a forklift body, and the cab is separated from the forklift body and mounted on the lifting mechanism, wherein the control module is installed in the cab and connected to the power module, wherein the power module is an electrically driven power module, and wherein the power module is driven and connected to the lifting mechanism so as to lift the cab by driving the lifting mechanism.

[0008] Furthermore, the lifting mechanism includes a gantry, a fixed part of the gantry is connected to the forklift body, a cab is assembled on a movable part of the gantry, and the power module drives the movable part connected to the gantry.

[0009] Furthermore, the gantry is a single-stage gantry, a two-stage gantry or a three-stage gantry.

[0010] Furthermore, the lifting mechanism also includes a bracket, which is installed on the movable part of the portal frame; the cab is fixed on the bracket and then assembled on the movable part of the portal frame.

[0011] Furthermore, the lifting mechanism also includes a support frame, one end of which is connected to the forklift body, and the other end is connected to the fixed part of the gantry, so that the forklift body, the fixed part of the gantry and the support frame form a triangular fixed structure.

[0012] Furthermore, the system for lifting the forklift cab also includes a sensing module, which is arranged on the lifting mechanism to detect parameters of the cab on the lifting mechanism, and the output end of the sensing module is connected to the control module.

[0013] Furthermore, the control module has an operating mechanism, and the operating mechanism is a button, a touch screen or an operating handle.

[0014] Furthermore, the power module is an electric cylinder with a servo motor.

[0015] Furthermore, the power module is a servo motor, and the servo motor cooperates with the transmission structure to drive and connect the lifting mechanism.

[0016] A method for lifting a forklift cab includes providing the above-mentioned system for lifting a forklift cab. After an operator enters the cab, the operator controls the power module through a control module to drive a lifting mechanism to lift or lower the cab.

[0017] The technical solution provided by the present invention has the following beneficial effects:

[0018] 1. This solution adopts a lifting system with a control module, a power module and a lifting mechanism. The operator can control the lifting and lowering operation of the cab while sitting in the cab. The blind spot vision can be directly identified by the human eye through the lifting of the cab, and the imaging field of view is wider and the effect is better; the thinking reaction time is reduced by at least 2 seconds, which greatly improves the working efficiency and safety.

[0019] 2. The power module is an electrically driven power module, which does not need to occupy the oil circuit interface of the forklift body, avoiding the defects of increasing the risk of oil leakage and complex maintenance caused by adding the interface of the hydraulic system. The hydraulic part of the forklift body and the electronic control part of the lifting system are separated without interference, which is convenient for maintenance. And through the electrically driven power module, the lifting and lowering of the cab can be faster and more accurate.

[0020] 3. The lifting mechanism adopts a gantry and a support frame. The forklift body, the fixed part of the gantry and the support frame form a triangular fixed structure with simple structure and good stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The figure is a functional block diagram of a system for lifting a forklift cab in an embodiment;

[0022] Figure 2The figure shows the initial state of the forklift of the system with a standard, two-stage mast lift forklift cab in the first embodiment. Figure 1 ;

[0023] Figure 3 The figure shows the forklift lifting state of the system with a standard and two-stage mast lifting forklift cab in the first embodiment. Figure 2 ;

[0024] Figure 4 The figure shows the initial state of the forklift of the system with a three-stage mast lifting forklift cab in the second embodiment. Figure 1 ;

[0025] Figure 5 The forklift schematic diagram of the system with a three-stage mast lifting forklift cab in the second embodiment is shown. Figure 2 ;

[0026] Figure 6 The figure shows the initial state of the forklift of the system with a handle type standard and two-stage mast lifting forklift cab in the third embodiment. Figure 1 ;

[0027] Figure 7 The figure shows the lifting state of the forklift in the system of the handle type with standard and two-stage mast lifting forklift cab in the third embodiment. Figure 2 ;

[0028] Figure 8 The figure shows the initial state of the forklift of the system with a handle type forklift cab with a three-stage gantry lift in the fourth embodiment. Figure 1 ;

[0029] Fig. 9 The figure shows the lifting state of the forklift of the system with a handle type three-stage mast lifting forklift cab in the fourth embodiment. Figure 2 . DETAILED DESCRIPTION

[0030] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0031] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0032] Embodiment 1

[0033] Reference Figure 1As shown, this embodiment provides a system for lifting a forklift cab, including a control module 1, a power module 2 and a lifting mechanism 3, the lifting mechanism 3 is installed in Figure 2 and Figure 3 In the forklift body 100 shown, the cab 4 is separated from the forklift body 100 and assembled on the lifting mechanism 3, the control module 1 is installed in the cab 4 and connected to the power module 2, the power module 2 is an electrically driven power module, such as a servo motor in this embodiment, of course, in other embodiments, the power module 2 can also be an electrically driven power device such as an electric cylinder with a servo motor. The power module 2 is driven to connect to the lifting mechanism 3 to lift the cab 4 by driving the lifting mechanism 3.

[0034] This solution adopts a lifting system with a control module 1, a power module 2 and a lifting mechanism 3. The operator can control the lifting and lowering operation of the cab 4 while sitting in the cab 4. The blocked blind spot vision can be directly recognized by the human eye through the lifting of the cab 4, and the imaging field of view is wider and the effect is better; the thinking reaction time is reduced by at least 2 seconds, which greatly improves the working efficiency and safety.

[0035] Specifically, the control module 1 has an operating mechanism. In this embodiment, the operating mechanism is a button 11, such as a lifting button and a lowering button are respectively arranged at the control armrest mechanism.

[0036] Specifically, in this embodiment, the power module 2 adopts a servo motor, and the servo motor can cooperate with a transmission structure (such as a chain, a belt, a gear, etc.) to drive and connect the lifting mechanism 3.

[0037] The electrically driven power module 2 does not need to occupy the oil circuit interface of the forklift body 100, avoiding the defects of increasing the risk of oil leakage and complicated maintenance caused by adding the interface of the hydraulic system. The hydraulic part of the forklift body 100 and the electronic control part of the lifting system are separated without interference, which is convenient for maintenance. And through the electrically driven power module, the lifting and lowering of the cab can be faster and more accurate.

[0038] For further information, please refer to Figure 2 , Figure 3 As shown, in this embodiment, the lifting mechanism 3 includes a gantry 31 and a bracket 32, and the gantry 31 adopts a secondary gantry 311 in the prior art. The fixed part (i.e., the outer gantry) of the gantry 31 is connected to the forklift body 100, and the cab 4 is separated from the forklift body 100 and fixed to the bracket 32, and the bracket 32 ​​is installed on the movable part of the gantry 31.

[0039] Of course, in other embodiments, if the cab 4 can be directly mounted on the inner mast on the mast 31, the structure of the bracket 32 ​​may not be used.

[0040] One end of the support frame 33 is connected to the forklift body 100, and the other end is connected to the fixed part of the gantry 31, so that the forklift body 100, the fixed part of the gantry 31 and the support frame 33 form a triangular fixed structure. In this way, the gantry 31 can be stably assembled. Of course, in other embodiments, if the gantry 31 can be stably installed, the support frame 33 structure can also be omitted.

[0041] The system for lifting the forklift cab also includes a sensing module 5, which is arranged on the lifting mechanism 3 to detect the parameters of the cab 4 on the lifting mechanism 3, and the output end of the sensing module 5 is connected to the control module 1. The sensing module 5 can adopt a position sensor, a height sensor or a speed sensor in the prior art. It is used to detect the position, height and lifting speed of the cab 4 on the lifting mechanism 3 and output them to the control module 1. The control module 1 then controls the lifting speed of the lifting mechanism 3 according to the obtained information, which plays a good role in information feedback and ensures safety.

[0042] Based on the above system, this embodiment also provides a method for lifting a forklift cab, which is: provide the above system for lifting a forklift cab, after the operator enters the cab 4, the operator controls the power module 2 to drive the lifting mechanism 3 to lift or lower the cab 4 through the control module 1. That is, during the operation, the operator controls the servo motor to rotate forward and reverse by operating the button 11 on the armrest, so as to lift and lower the secondary gantry, and then lift and lower the cab 4. Figure 2 As shown, the cab 4 is lowered to the initial position. Figure 3 As shown, the cab 4 is lifted.

[0043] Embodiment 2

[0044] The system for lifting the forklift cab provided in this embodiment is substantially the same as the system in the first embodiment, except that: in this embodiment, Figure 4 , Figure 5 As shown, the gantry 31 is a three-stage gantry 312 , and the cab 4 is mounted on the movable part of the three-stage gantry 312 via a bracket 32 ​​.

[0045] Based on the above system, this embodiment provides a method for lifting a forklift cab. Specifically, the method is as follows: during operation, the operator controls the servo motor to rotate forward and reverse by operating the button 11 on the armrest to achieve the lifting and lowering of the three-stage gantry 312, thereby achieving the lifting and lowering of the cab 4. Figure 4 As shown, the cab 4 is lowered to the initial position. Figure 5 As shown, the cab 4 is lifted.

[0046] Embodiment 3

[0047] The system for lifting the forklift cab provided in this embodiment is substantially the same as the system in the first embodiment, except that: in this embodiment, Figure 6 , Figure 7 As shown, the operating mechanism of the control module 1 is an operating handle 12 .

[0048] Based on the above system, this embodiment provides a method for lifting a forklift cab, which specifically includes: during operation, the operator controls the servo motor to rotate forward and reverse by operating the direction of the operating handle 12, thereby lifting and lowering the secondary gantry 311, and further lifting and lowering the cab 4. Figure 6 As shown, the cab 4 is lowered to the initial position. Figure 7 As shown, the cab 4 is lifted.

[0049] Embodiment 4

[0050] The system for lifting the forklift cab provided in this embodiment is substantially the same as the system in the third embodiment, except that: in this embodiment, Figure 8 , Fig. 9 As shown, the gantry is a three-stage gantry 312 , and the cab 4 is mounted on the movable part of the three-stage gantry 312 via a bracket 32 ​​.

[0051] Based on the above system, this embodiment provides a method for lifting a forklift cab, which specifically includes: during operation, the operator controls the servo motor to rotate forward and reverse by operating the direction of the operating handle 12, thereby lifting and lowering the three-stage gantry 312, and further lifting and lowering the cab 4. Figure 8 As shown, the cab 4 is lowered to the initial position. Fig. 9 As shown, the cab 4 is lifted.

[0052] The above embodiments all adopt the door frame 31, which is easy to obtain for forklift manufacturers and has stable lifting and lowering. Of course, in other embodiments, the door frame 31 can also be replaced by other brackets that can achieve lifting activities. At the same time, the power module 2 can also use other electrically driven drivers, such as electric cylinders with servo motors, etc.

[0053] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes may be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined by the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A system for lifting the forklift cab, Features: It includes a control module, a power module and a lifting mechanism. The lifting mechanism is installed on the forklift body. The cab is separated from the forklift body and installed on the lifting mechanism. The control module is installed in the cab and connected to the power module. The power module is an electrically driven power module. The power module drives and connects to the lifting mechanism to lift the cab by driving the lifting mechanism.

2. The system for lifting a forklift cab according to claim 1, Features: The lifting mechanism comprises a gantry, a fixed part of which is connected to a forklift body, a cab is mounted on a movable part of the gantry, and the power module drives and connects the movable part of the gantry.

3. The system for lifting a forklift cab according to claim 2, Features: The gantry is a single-stage gantry, a two-stage gantry or a three-stage gantry.

4. The system for lifting a forklift cab according to claim 2, Features: The lifting mechanism also includes a bracket, which is installed on the movable part of the portal frame; the cab is fixed on the bracket and then assembled on the movable part of the portal frame.

5. The system for lifting a forklift cab according to claim 2, Features: The lifting mechanism also includes a support frame, one end of which is connected to the forklift body and the other end is connected to the fixed part of the door frame, so that the forklift body, the fixed part of the door frame and the support frame form a triangular fixed structure.

6. The system for lifting a forklift cab according to claim 1, Features: The system for lifting a forklift cab further comprises a sensing module, which is arranged on the lifting mechanism to detect parameters of the cab on the lifting mechanism, and an output end of the sensing module is connected to the control module.

7. The system for lifting a forklift cab according to claim 1, Features: The control module has an operating mechanism, which is a button, a touch screen or an operating handle.

8. The system for lifting a forklift cab according to claim 1, Features: The power module is an electric cylinder with a servo motor.

9. The system for lifting a forklift cab according to claim 1, Features: The power module is a servo motor, and the servo motor cooperates with the transmission structure to drive and connect the lifting mechanism.

10. A method for lifting a forklift cab, Features: A system for lifting a forklift cab as described in any one of claims 1 to 9 is provided, wherein after an operator enters the cab, the operator controls the power module through a control module to drive a lifting mechanism to lift or lower the cab.

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