Remote control lifting device and vehicle

Abstract

The application discloses a remote control lifting device and a vehicle, and is characterized in that the remote control lifting device comprises a hydraulic assembly and a control assembly, a remote control terminal in the control assembly can send a control instruction to the hydraulic assembly, the extension or retraction of a cylinder in the hydraulic assembly is driven, the cab is lifted and separated from the chassis, or the cab is lowered and placed on the base, and the problem of inconvenient operation of the existing cab lifting device is solved.

Description

Technical Field

[0001] This invention relates to the field of automotive technology, and in particular to a remote-controlled lifting device and vehicle. Background Technology

[0002] Existing commercial vehicle cab lifting devices mainly consist of three parts: a manual pump, an electric pump, and a hydraulic cylinder, interconnected by hydraulic lines to form a closed system. The upper and lower ends of the hydraulic cylinder connect the cab to the vehicle chassis. The manual and electric pumps are mounted behind the foot pedals, with an operating space provided by opening the foot pedal cover for easy operation and cab lifting. During operation, personnel must squat or bend over to manually change direction. Mechanical pumps require continuous force to press the pump piston, which is time-consuming and laborious; electric pumps require prolonged pressure on the fingers to activate the power button. Therefore, the existing cab lifting devices are inconvenient to operate. Summary of the Invention

[0003] The main objective of this invention is to provide a remote-controlled lifting device and vehicle, which aims to solve the problem of inconvenient operation of existing car cab lifting devices.

[0004] To achieve the above objectives, the present invention provides a remote-controlled lifting device for a vehicle, the vehicle having a cab and a chassis, the remote-controlled lifting device comprising:

[0005] The hydraulic assembly includes a cylinder connected at one end to the chassis and at the other end to the cab, an oil pump communicating with the cylinder, a drive unit that drives the oil pump, and an electromagnetic directional valve that connects the cylinder and the oil pump.

[0006] The control assembly includes a control module electrically connected to the oil pump and the solenoid directional valve respectively, and a wireless receiver electrically connected to the control module;

[0007] A remote control terminal is used to send control commands to the wireless receiver;

[0008] The wireless receiver is used to transmit the control command to the control module. The control module is used to control the electromagnetic reversing valve to change the flow direction of the working medium in the hydraulic cylinder according to the control command, so as to drive the hydraulic cylinder to lift or lower the cab.

[0009] Optionally, the electromagnetic directional valve is a two-position four-way valve, and the hydraulic cylinder includes an ascending chamber and a descending chamber. The ascending chamber is connected to port A of the electromagnetic directional valve, and the descending chamber is connected to port B of the electromagnetic directional valve. When the hydraulic cylinder lifts the cab, the working medium in the descending chamber enters from port B and flows to port A, and then enters the ascending chamber.

[0010] Optionally, the remote-controlled lifting device further includes a first check valve connecting port A and the lifting chamber. The first check valve is a hydraulically controlled check valve, and its control port is connected to port B.

[0011] Optionally, the remote-controlled lifting device further includes a control valve connected in parallel with the first one-way valve; when the piston of the cylinder is in the low position, the control valve opens, and the working medium in the lifting chamber flows to port A through the control valve.

[0012] Optionally, the cylinder further includes a D port communicating with the rising chamber, an E port communicating with the falling chamber, and an F port located in the middle section of the cylinder body. The D port and the F port are connected by a first oil pipe, and a second one-way valve is also provided on the first oil pipe, which flows from the F port to the D port.

[0013] Optionally, the hydraulic cylinder and the driving component are integrated to form an electric hydraulic cylinder, the driving component includes a motor, and the electromagnetic reversing valve and the wireless receiver are integrated to form a remote-controlled solenoid valve.

[0014] Optionally, the cab is provided with a placement area for the remote control terminal. When the remote control terminal is located in the placement area, the remote control lifting device controlled by the remote control terminal stops.

[0015] Optionally, the control component includes a first radio frequency tag disposed in the placement area, and the remote control terminal includes an identification module corresponding to the first radio frequency tag.

[0016] Optionally, the remote lifting device further includes an overflow valve, which is connected in series with the oil pump outlet and the oil tank.

[0017] Optionally, the remote control terminal may include a wireless remote control or a mobile terminal.

[0018] The present invention also proposes a vehicle including the aforementioned remote lifting device.

[0019] This invention solves the problem of inconvenient operation of existing cab lifting devices by incorporating a remote-controlled lifting device that includes a hydraulic component and a control component. The remote control terminal in the control component can send control commands to the hydraulic component, driving the extension or retraction of the hydraulic cylinders to raise the cab away from the chassis, or lower the cab and place it on the base. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the functional modules of a remote-controlled lifting device in one embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of a hydraulic component in one embodiment of the present invention;

[0023] Figure 3 for Figure 2 A schematic diagram of the hydraulic assembly in the embodiment;

[0024] Figure 4 This describes the control principle of the remote-controlled lifting device in one embodiment of the present invention.

[0025] Figure 5 This is a schematic diagram of the functional modules of the remote-controlled lifting device in another embodiment of the present invention.

[0026] Explanation of icon numbers:

[0027]

[0028] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0030] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0031] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0032] This invention proposes a remote-controlled lifting device, referring to... Figures 1 to 5 The remote-controlled lifting device is used in a vehicle having a cab and a chassis, and the remote-controlled lifting device includes:

[0033] The hydraulic assembly 10 includes a cylinder 17 connected at one end to the chassis and at the other end to the cab, an oil pump communicating with the cylinder 17, a drive unit 11 that drives the oil pump, and an electromagnetic directional valve 12 that connects the cylinder 17 and the oil pump.

[0034] Control component 20 includes a control module electrically connected to the oil pump and the solenoid directional valve 12 respectively, a wireless receiver electrically connected to the control module, and a remote control terminal 30;

[0035] The remote control terminal 30 is used to send control commands to the wireless receiver, the wireless receiver is used to transmit the control commands to the control module, and the control module is used to control the electromagnetic reversing valve to change the flow direction of the working medium in the hydraulic cylinder 17 according to the control commands, so as to drive the hydraulic cylinder 17 to lift or lower the cab.

[0036] In this embodiment, the driving component includes a motor 11, and the hydraulic cylinder 17 is integrally formed with the driving component 11 to constitute an electric hydraulic cylinder 17. The driving component 11 is a one-way driving component 11. The electromagnetic reversing valve and the wireless receiver are integrally formed to constitute a remote-controlled solenoid valve. This invention, by setting up a remote-controlled lifting device including a hydraulic component 10 and a control component 20, allows the remote control terminal 30 in the control component 20 to send control commands to the hydraulic component 10, driving the extension or retraction of the hydraulic cylinder 17 in the hydraulic component 10, thereby raising the cab away from the chassis, or lowering the cab and placing it on the base. This solves the problem of inconvenient operation of existing cab lifting devices.

[0037] In one embodiment, reference is made to Figures 1 to 5The electromagnetic directional valve 12 is a two-position four-way valve. The hydraulic cylinder 17 includes an ascending chamber 17a and a descending chamber 17b. The ascending chamber 17a is connected to port A of the electromagnetic directional valve 12, and the descending chamber 17b is connected to port B of the electromagnetic directional valve 12. When the hydraulic cylinder lifts the cab, the working medium in the descending chamber 17b flows from port B to port A and then into the ascending chamber 17a. In this embodiment, when the two-position four-way valve is in the left position, the push rod of the hydraulic cylinder 17 extends. When the two-position four-way valve is in the right position, the push rod of the hydraulic cylinder 17 retracts, and the working medium in the descending chamber 17b flows from port B to port A and then into the ascending chamber 17a, increasing the flow rate of the working medium into the ascending chamber 17a, allowing the cab to be lifted quickly.

[0038] In one embodiment, reference is made to Figures 1 to 5 The remote-controlled lifting device also includes a first check valve 15 connecting port A and the lifting chamber 17a. The first check valve 15 is a hydraulically controlled check valve, with its control port connected to port B. In this embodiment, when the cab is in the lifting state, the working medium enters the lifting chamber 17a through the first check valve 15. In the lowering state, the working medium enters the lowering chamber 17b from port B. At this time, there is oil pressure in the oil passage between port B and the lowering chamber 17b. This oil pressure is transmitted to the control port, causing the first check valve 15 to open, allowing the working medium in the lifting chamber 17a to flow to port A. When the drive unit 11 stops working, the first check valve 15 acts as a flow cutoff valve, and the cylinder 17 is in a locked state.

[0039] In one embodiment, reference is made to Figures 1 to 5 The remote-controlled lifting device also includes a control valve 18 connected in parallel with the first one-way valve 15; when the piston of the hydraulic cylinder 17 is in the low position, the control valve 18 opens, and the working medium in the rising chamber 17a flows to port A through the control valve 18. The hydraulic cylinder 17 also includes a port D communicating with the rising chamber 17a, a port E communicating with the lowering chamber 17b, and a port F located in the middle section of the cylinder body. Port D and port F are connected through a first oil pipe, and a second one-way valve 16 is also provided on the first oil pipe, allowing flow from port F to port D.

[0040] In this embodiment, the first oil pipe is the moving oil pipe 14, and the second check valve 16 is connected in series with the first check valve 15 and the control valve 18. When the control valve 18 is open, the working medium flows from port E to port A. When the piston is in the high position, the control valve 18 is closed, and port F is connected to the rising chamber 17a. The working medium in the rising chamber 17a flows from port F to the second check valve 16 and then enters port A through the first check valve 15. When the piston moves to the low position, port F is connected to the falling chamber 17b, and the control valve 18 is open. The working medium entering the falling chamber 17b from port E flows into port A sequentially through the moving oil pipe 14, the second check valve 16, and the first check valve 15. At this time, the piston is in a free state. Under the action of the gravity of the cab, the piston continues to descend, causing the working medium in the rising chamber 17a to flow into port A through the control valve 18. In this embodiment, the control valve 18, the first check valve 15, and the second check valve 16 constitute a control integrated valve. The hydraulic pipe 14 connects the lowering oil chamber and the integrated control valve of the cylinder 17, allowing the piston of the cylinder 17 to move left and right, thus providing a buffering effect. The return oil pipe 19 (EB) connects the top of the lowering oil chamber and the control port of the first check valve 15 in the integrated control valve of the cylinder 17.

[0041] In this embodiment, the electromagnetic reversing valve 12 can be a three-position four-way valve, adding a neutral position to the aforementioned two-position four-way valve, with the neutral position function being O-type. Correspondingly, the remote control terminal 30's control interface is divided by function, with a total of five control buttons: drive unit 11 running, drive unit 11 stopping, cylinder 17 push rod rising, cylinder 17 push rod stopping, and cylinder 17 push rod falling. These buttons are point-contact and do not require long presses. (Refer to...) Figures 1 to 5 The wireless remote control is configured with five signals, generating five corresponding pulse signals. Different signals control the power supply of the corresponding actuators. This is an interlocking mechanism in the control logic; when the "up" button is pressed, the cab rises, and even if the "down" button is pressed, the hydraulic assembly 10 will not lower the cylinder 17 push rod. Similarly, during cab descent, even if the "down" button is pressed, the hydraulic assembly 10 will not raise the cylinder 17 push rod. During the cab's rising or falling, the hydraulic assembly 10 will only stop when the "stop" button is pressed. The interlock controller controls the left and right energization of the solenoid directional valve 12 to prevent misoperation. Simultaneously, the de-energization signal of the drive component 11, via the synchronization controller, de-energizes the solenoid valve, returning it to the neutral position, closing ports A and B, and locking the working medium in the cylinder within the oil chamber and oil pipe.

[0042] Specifically, after touching the start button on the remote control terminal 30, the one-way drive component 11 is powered on, and the drive component 11 begins to rotate, driving the hydraulic gear pump to deliver hydraulic oil. The oil returns to the oil storage chamber through the overflow valve 13, forming a non-working circuit. Touching the up button on the remote control terminal 30 powers on the left position of the solenoid directional valve, opening the up channel, and supplying oil to the left chamber of the lifting cylinder through the one-way valve, causing the cab to tilt. When the solenoid valve stop button is pressed, the solenoid directional valve is de-energized and returns to its original position, and the drive component 11 pumps oil back to the oil storage tank through the overflow valve 13, stopping the cab tilt midway. Touching the down button on the remote control terminal 30 powers on the right position of the solenoid directional valve, opening the down channel, and supplying oil to the right chamber of the lifting cylinder through the drive component 11, causing the cab to return to its original position. The control valve 18 only operates when the lifting cylinder piston is in the low position, allowing oil to flow in both the left and right chambers, resulting in a small range of left and right movement of the piston in the hydraulic cylinder 17. Touch the stop button on the remote control terminal 30, the drive unit 11 stops working, and the solenoid reversing valve 2 resets.

[0043] In one embodiment, reference is made to Figures 1 to 5 The remote-controlled lifting device also includes a relief valve 13, which is connected in series with the oil pump and the oil tank. In the event of a hydraulic system malfunction, excessive oil pressure, or excessive load on the drive component 11, the pressurized oil output from the oil pump can flow back to the oil tank through the relief valve 13, serving as a safety measure.

[0044] In one embodiment, reference is made to Figures 1 to 5 The cab is provided with a placement area for the remote control terminal 30. When the remote control terminal 30 is located in the placement area, the lifting device controlled by the remote control terminal 30 stops. In this embodiment, by setting up a placement area, even if the driver accidentally touches the remote control button in the cab, the hydraulic component 10 will not produce a corresponding action. To achieve the above function, the control component 20 includes a first radio frequency tag disposed in the placement area, and the remote control terminal 30 includes an identification module corresponding to the first radio frequency tag. In this embodiment, a mounting slot for the remote control terminal 30 can be provided in the cab, and the first radio frequency tag is disposed in the mounting slot. After the identification module in the remote control terminal 30 identifies the first radio frequency tag, it locks the keyboard of the remote control terminal 30. Specifically, the keyboard can be powered off, so even if the hydraulic component 10 is accidentally touched, it will not perform any related actions.

[0045] In another embodiment, reference Figures 1 to 5 The remote control terminal 30 is activated when it is detached from the mounting slot, but there is still a risk of accidental activation if the driver is still in the cab. A second RFID tag can be installed outside the cab for activation. After the driver leaves the cab and brings the control terminal close to the second RFID tag, the identification module obtains the information from the second RFID tag before powering on the keypad to unlock it.

[0046] In one embodiment, reference is made to Figures 1 to 5 The remote control terminal 30 includes a wireless remote control or a mobile terminal. In this embodiment, the mobile terminal can be a smartphone, tablet, or other smart terminal. Control commands can be sent directly to the wireless receiver via the infrared module of the mobile terminal. The wireless receiver includes a remote communication module, which can send control commands to a remote server 40 via an app or mini-program on the mobile terminal. The server 40 then forwards the commands to the remote communication module, subsequently controlling the hydraulic cylinder 17 to perform the corresponding action. It is worth noting that when controlling the hydraulic component 10 via the mobile terminal, the aforementioned action of identifying the second RFID tag is still required to improve system security. That is, after the mobile terminal completes the identification of the second RFID tag, its identification result is sent to the server 40. Only after the server 40 receives the identification result can it issue the control command.

[0047] This invention aims to design a remote-controlled lifting device that simplifies complex operations and enhances human-machine interaction. It eliminates the need for pre-reserved operating space, maintaining only the installation position of the hydraulic cylinder 17 without affecting the exterior appearance. The innovation lies in using wireless remote control to issue commands, which are then sensed by the controlled drive component 11 and the solenoid valve to execute corresponding actions, completing the tilting of the cab. The remote control uses a point-contact design, requiring minimal effort with a light press. The operator can move freely within the system. The integrated design of the drive component 11 and hydraulic cylinder 17 reduces the need for connections between different functional components. The transmission fluid is enclosed within the system.

[0048] The present invention also proposes a vehicle, referring to Figures 1 to 5 The vehicle includes a cab, a chassis, and the aforementioned remote-controlled lifting device. This invention, by providing a remote-controlled lifting device comprising a hydraulic assembly 10 and a control assembly 20, allows the control terminal 30 in the control assembly 20 to send control commands to the hydraulic assembly 10, driving the extension or retraction of the hydraulic cylinder 17 within the hydraulic assembly 10. This raises the cab away from the chassis or lowers the cab onto the base, thus solving the problem of inconvenient operation of existing cab lifting devices. It is worth noting that because the vehicle of this invention includes all embodiments of the aforementioned remote-controlled lifting device, it possesses all the beneficial effects of the aforementioned remote-controlled lifting device, which will not be elaborated upon here.

[0049] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A remote control lifting device for a vehicle, the vehicle having a cab and a chassis, characterised in that, The remote control lifting device comprises: a hydraulic assembly comprising a cylinder connected to the chassis at one end and to the cab at the other end, an oil pump in communication with the cylinder, a driving member for driving the oil pump to operate, and an electromagnetic reversing valve in communication between the cylinder and the oil pump; a control assembly comprising a control module in electrical connection with the oil pump and the electromagnetic reversing valve respectively, and a wireless receiver in electrical connection with the control module; a remote control terminal for sending a control instruction to the wireless receiver; the wireless receiver is configured to transmit the control instruction to the control module, and the control module is configured to control the electromagnetic reversing valve to change the flow direction of the working medium in the cylinder according to the control instruction, so as to drive the cylinder to lift or lower the cab; the cab is provided with a placement area for placing the remote control terminal, and when the remote control terminal is located in the placement area, the remote control terminal controls the lifting device to stop; the control assembly comprises a first radio frequency tag arranged in the placement area, and a second radio frequency tag arranged outside the cab and configured to be activated; the remote control terminal comprises an identification module corresponding to the first radio frequency tag, and the identification module is configured to unlock the power-on of the keyboard of the remote control terminal after obtaining information of the second radio frequency tag; the cylinder comprises a lifting chamber, a lowering chamber, a D port in communication with the lifting chamber, an E port in communication with the lowering chamber, and an F port arranged in the middle section of the cylinder body; the D port and the F port are in communication through a first oil pipe; the lifting chamber and an A port of the electromagnetic reversing valve are in communication; the lowering chamber and a B port of the electromagnetic reversing valve are in communication; when the cylinder lifts the cab, the working medium in the lowering chamber flows from the B port to the A port and enters the lifting chamber; a first one-way valve in communication between the A port and the lifting chamber; the first one-way valve is a hydraulic control one-way valve, and a control oil port of the first one-way valve is in communication with the B port; a control valve in parallel connection with the first one-way valve; when the piston of the cylinder is in a low position, the control valve is opened, and the working medium in the lifting chamber flows to the A port through the control valve; a second one-way valve in the first oil pipe is arranged to flow from the F port to the D port, and the second one-way valve is in series connection with the first one-way valve and the control valve respectively; the cylinder and the driving member are integrally arranged to form an electric cylinder, the driving member comprises a motor, and the electromagnetic reversing valve and the wireless receiver are integrally arranged to form a remote control electromagnetic valve.

2. A remote control lifting device as claimed in claim 1, characterized in that The electromagnetic reversing valve is a two-position four-way valve.

3. The remote control lifting device of claim 1, wherein, The remote control lifting device further comprises an overflow valve arranged in series connection with an oil outlet of the oil pump and an oil tank.

4. The remote control lifting device of claim 1, wherein, The remote control terminal comprises a wireless remote controller or a mobile terminal.

5. A vehicle characterized by comprising: The remote control lifting device comprises a cab, a chassis, and the remote control lifting device according to any one of claims 1-4.

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