Cabin lowering device based on chassis power drive

Abstract

The invention aims to provide the lowering cabin device based on chassis power drive, so that the lowering cabin mounted on the chassis can be lowered from two sides of a vehicle to a height convenient for personnel to operate through translational motion, and an operator can take equipment, tools and spare parts from the two sides of the vehicle in a standing manner; and after the operation is completed, the lowering cabin restores to the initial position. The lowering cabin device can effectively improve the safety of personnel and articles during operation, meanwhile, the labor intensity of the personnel is reduced, the taking efficiency of spare parts is improved, and the rapid maintenance guarantee requirement is met. The lowering cabin device is driven by the power of the chassis, so that the integration level of the vehicle is conveniently improved and guaranteed, and the space requirement and the price cost are reduced.

Description

Technical Field

[0001] This invention relates to the field of cabin rotation technology, and in particular to a cabin lowering device based on chassis power drive. Background Technology

[0002] In the field of integrated support, support vehicles generally consist of a chassis and a container mounted on the chassis. Support equipment, tools, and spare parts are stored in the container. To improve the mobility of support vehicles, the chassis height is generally greater than 1140mm. Personnel need to enter the container via a ladder to retrieve support equipment, tools, and spare parts. For retrieving heavy equipment, tools, and spare parts, two personnel are required to enter and exit the container via the ladder, and the retrieval time is long and labor-intensive; at the same time, this work has a certain impact on personnel safety. Especially in high-altitude areas such as plateaus, reducing the labor intensity of personnel retrieving equipment, tools, and spare parts is particularly important for improving support capabilities.

[0003] Therefore, a chassis-driven lowering compartment device allows personnel to access equipment, tools, and spare parts from both sides of the vehicle without having to climb into the compartment, reducing labor intensity, improving spare parts retrieval efficiency, and meeting the needs of rapid maintenance and support. Summary of the Invention

[0004] The purpose of this invention is to provide a chassis-driven lowering cabin device, which can lower a container mounted on a vehicle chassis from both sides to a height that is easy for personnel to operate at through translational movement. Operators can stand on both sides of the vehicle to retrieve equipment, tools and spare parts. After the operation is completed, the lowering cabin is restored to its initial position.

[0005] A chassis-driven lowering pod device, the device comprising: a base, connecting rod B, connecting rod C, connecting rod D, connecting rod E, a pressure rod, a hydraulic cylinder, and a pod body;

[0006] The base is flat and located at the bottom. A base mounting seat is provided on the base. One end of connecting rod B is movably connected to the base mounting seat, and the other end is movably connected to the cabin. Connecting rod C is arranged parallel to connecting rod B, with one end of connecting rod C movably connected to the base mounting seat and the other end movably connected to the cabin. One end of connecting rod D is movably connected to connecting rod B, and the other end is movably connected to connecting rod C. Connecting rods B, C, and D, together with the base mounting seat, form a parallelogram structure.

[0007] The fixed end of the hydraulic cylinder is set on the base, the movable end of the hydraulic cylinder is movably connected to one end of the connecting rod E, and the other end of the connecting rod E is movably connected to the connecting rod D; one end of the pressure rod is movably connected to the movable end of the hydraulic cylinder, and the other end is movably connected to the base mounting seat.

[0008] The hydraulic cylinder retracts, causing the pressure rod, connecting rod E, connecting rod D, connecting rod C, and connecting rod B to retract, bringing connecting rod B and connecting rod C closer together and causing the cabin to retract into place.

[0009] Preferably, the base mounting seat is provided with a cabin guide device, and the cabin guide device is provided with rollers and brackets, with the rollers fixed to the base mounting seat by the brackets.

[0010] Preferably, the cabin guiding device is an elastic guide that also has a locking function; the elastic guide mechanism is designed based on the inertial force of 4800N generated by the lowering cabin, and adopts a safety factor of 1.5 times and an elastic preload of 7500N to ensure the relative stability of the lowering cabin.

[0011] Preferably, the base is further provided with a hydraulic cylinder mounting seat, which is used to movably mount the hydraulic cylinder.

[0012] Preferably, the cabin includes: a cabin body, a cabin door, and a pivot pin;

[0013] There are two pins: the first pin is used to movably connect to one end of the connecting rod B, and the second pin is used to movably connect to one end of the connecting rod C.

[0014] Preferably, the connecting rod E is subjected to tensile force, has high material utilization, minimal cross-section, stainless steel material at both hinge points, and a self-lubricating bushing at the tail.

[0015] Preferably, the pressure rod is always under pressure during operation, the hinge points at both ends are made of stainless steel, and the tail end is made of a self-lubricating bushing.

[0016] A control method for a chassis-driven lowering pod device, the method comprising:

[0017] Upon receiving the lowering command, the locking mechanism is unlocked, and the lowering compartment is lowered to the limit position. To facilitate the retrieval of equipment, tools, and spare parts inside the lowering compartment, the lowering compartment can be lowered to the required height. When it descends to the limit position, the control system will send a signal and stop moving. Once the lowering compartment lowering device is designed, the lowering limit position is determined by the maximum extension length of the hydraulic cylinder.

[0018] The retraction process is the reverse of the lowering process. When the cabin is fully retracted, the electronic control system will send a positioning signal and automatically lock it. The lowering cabin maintains translational motion in space throughout the movement. Driven by hydraulic cylinders, the linkage mechanism transmits power to the lowering cabin, thereby raising or lowering it. In the linkage mechanism, links B, C, and D, and the mounting base are connected in series to form a parallel four-bar linkage. Under the "leveling" effect of the parallel four-bar linkage, the lowering cabin always remains in a horizontal state.

[0019] When the hydraulic cylinder extends to its limit, the lower cabin is stretched onto the base via the parallel four-bar linkage. When the lowering action of the cabin is performed, the hydraulic cylinder pushes the connecting rod E and the pressure rod. The connecting rod E pushes the parallel four-bar linkage, causing the lowering cabin to perform a translational movement and move to the position along the motion curve. At this time, the hydraulic cylinder reaches its maximum extension, and the lowering cabin is positioned for easy operation by personnel.

[0020] The beneficial effects of this invention are as follows:

[0021] The purpose of this invention is to provide a chassis-driven lowering compartment device that allows the compartment, mounted on the chassis, to be lowered from both sides of the vehicle to a height easily accessible for personnel. This enables operators to stand on either side of the vehicle to retrieve equipment, tools, and spare parts. After the operation is completed, the lowering compartment returns to its initial position. This lowering compartment device effectively improves the safety of personnel and materials during operations, while reducing labor intensity, increasing spare parts retrieval efficiency, and meeting the needs of rapid maintenance and support. The chassis-driven lowering compartment device facilitates improved integration of support vehicles, reducing space requirements and costs. Attached Figure Description

[0022] Figure 1 This is a diagram of the chassis-driven lowering compartment assembly.

[0023] Figure 2 This is a diagram of the lower cabin assembly.

[0024] Figure 3 This is a schematic diagram of the base installation structure;

[0025] Figure 4 This is a schematic diagram of the cabin structure;

[0026] Figure 5 This is a schematic diagram of the lowering module's workflow;

[0027] Figure 6 It is the motion characteristic curve of the lowering cabin;

[0028] Figure 7 It is a parallel four-bar linkage mechanism for lowering the cabin;

[0029] Among them, 1. base; 2. connecting rod B; 3. connecting rod C; 4. connecting rod D; 5. connecting rod E; 6. pressure rod; 7. hydraulic cylinder; 8. cabin; 101. cabin bottom plate; 102. hydraulic cylinder mounting seat; 103. cabin guide device; 104. mounting seat; 801. cabin body; 802. cabin door; 803. pin A; 804. pin B. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this specification clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments in this specification, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments in this application without creative effort are within the scope of protection of this document. Specific Implementation Example 1:

[0032] A support vehicle's lowering compartment device typically has two rows symmetrically arranged around the vehicle's direction of travel. The number of lowering compartments in each row is determined by the length of the vehicle's chassis subframe. Each lowering compartment has an independent drive system. The drive system enables one-button operation: lowering actions such as unlocking, lowering, and positioning, or retraction actions such as lifting, positioning, and locking. The lowering compartments of this device can stop at any position within their travel range, accommodating operators of varying heights. During the lowering or retraction process, the lowering compartments move horizontally.

[0033] The operating procedure for the lowering chamber device is as follows: Figure 5 As shown. To facilitate the retrieval of equipment, tools, and spare parts inside the lowering compartment, the lowering compartment can be lowered to the required height. When it reaches the limit position, the control system will send a signal and stop the movement. Once the lowering compartment lowering device is designed, the lowering limit position is determined by the maximum extension length of the hydraulic cylinder 7.

[0034] The retraction process is the reverse of the lowering process. When the device is fully retracted, the electronic control system will send a signal indicating that it has reached its position and will automatically lock it in place.

[0035] The lowering capsule maintains translational motion in space throughout its movement, and its motion characteristic curve is as follows: Figure 6 As shown. Driven by hydraulic cylinder 7, the linkage mechanism transmits power to the lowering compartment, thereby raising or lowering it. In the linkage mechanism, connecting rods 2, 3, and 4, along with mounting base 104, form a parallel four-bar linkage. Under the "leveling" function of this parallel four-bar linkage, the lowering compartment remains horizontal at all times. Figure 7 As shown.

[0036] When hydraulic cylinder 7 extends or retracts to its limit, the lower chamber 8 is pulled onto base 1 via a parallel four-bar linkage mechanism, as shown below. Figure 6 Position 1 is shown. When the lowering chamber is lowered, hydraulic cylinder 7 pushes connecting rod 5 and pressure rod 6; connecting rod 5 pushes the parallel four-bar linkage (connecting rod 2, connecting rod 3, connecting rod 4, and mounting base 104), causing the lowering chamber 8 to perform a translational movement, moving along the motion curve to position 4. At this time, the hydraulic cylinder reaches its maximum extension, and the lowering chamber is positioned for easy operation by personnel. Specific Implementation Example 2:

[0038] A chassis-driven lowering pod device includes: a power take-off unit, a hydraulic pump, a control valve group, and a lowering pod assembly.

[0039] Power Take-Off (PTO): Installed at the power take-off port of the chassis transmission, it is a power transmission component that converts the kinetic energy of the chassis engine into PTO output rotation to drive the hydraulic pump. PTOs use electro-hydraulic control and are suitable for applications requiring additional torque output, such as emergency vehicles, fire trucks, dump trucks, and cranes.

[0040] Hydraulic pump: Connected to the power take-off (PTO), it converts the PTO's mechanical energy into hydraulic energy, driving the hydraulic cylinders of the lowering pod device. The hydraulic pump is the power source for the lowering pod device, possessing sufficient driving force to drive the hydraulic cylinders and resist lateral wind loads, slope, and inertial loads.

[0041] Control valve assembly: Connected to the hydraulic pump and the hydraulic cylinder of the lowering compartment device via hydraulic lines, it controls the raising and lowering actions of the hydraulic cylinder of the lowering compartment.

[0042] The lowering compartment device is the core component of this patent, comprising: a lowering compartment and a compartment retraction / retrieval device. The lowering compartment is lowered and retracted by driving the lowering compartment through the retraction / retrieval device.

[0043] The lowering chamber device consists of the following components: Figure 2 As shown. It mainly includes: base 1, connecting rod B2, connecting rod C3, connecting rod D4, connecting rod E5, pressure rod 6, hydraulic cylinder 7, and cabin 8.

[0044] Base 1: Located on the vehicle chassis, its components are as follows Figure 3 As shown. The base 1 includes: a cabin bottom plate 101; a hydraulic cylinder mounting base 102; a cabin guide device 103; and a mounting base 104.

[0045] Cabin floor plate 101: The mounting base for the lower cabin retraction device. In actual products, it can be the subframe of the chassis.

[0046] Hydraulic cylinder mounting base 102: together with connecting rod 4 and connecting rod 5, it enables the installation of hydraulic cylinder 7.

[0047] Cabin guiding device 103: During the lifting process of the lowering cabin, deformation occurs due to wind load and slope load, causing it to deviate from the ideal motion trajectory. The function of cabin guiding device 103 is to overcome the structural deviation of the lowering cabin, ensuring that the lowering cabin is guided onto the predetermined motion trajectory when lifted into place. This system uses cabin guiding device 103 as an elastic guide, which also serves a locking function. The design of the elastic guide mechanism is based on the following: the acceleration of the vehicle during emergency braking is taken as 0.6g; the full load mass of the lowering cabin is calculated as 800kg; the inertial force generated by the lowering cabin is 4800N; a safety factor of 1.5 and an elastic preload of 7500N are adopted to ensure the relative stability of the lowering cabin.

[0048] Mounting base 104: It is the mounting base for connecting rod 2, connecting rod 3, pressure rod 6, and cabin guide device 103, providing support for installation.

[0049] Link 2: One end is hinged to the base mounting seat 104, and the other end is installed to the lowering compartment via pin 804.

[0050] Link 3: One end is hinged to the base mounting seat 104, and the other end is installed to the lowering compartment via pin 803.

[0051] Link 4: Connects links 2 and 3 via a pin.

[0052] Link 5: Connects link 2 and pressure rod 6 via a pin. Link 5 is a tensile component with high material utilization, minimal cross-section, stainless steel hinges at both ends, and a self-lubricating bushing at the tail.

[0053] Pressure rod 6: Connects the connecting rod 5 and the mounting bracket on the base 1. Pressure rod 6 bears pressure throughout the working process. The hinge points at both ends are made of stainless steel, and the tail end uses a self-lubricating bushing.

[0054] Hydraulic cylinder 7 is connected at one end to the mounting bracket on base 1, and at the other end to connecting rod 5 and pressure rod 6 via a pin. The function of the hydraulic cylinder is to connect with the lower compartment deployment and retraction device to drive the device to lower and retract the lower compartment.

[0055] Lowering compartment: Connected to the lowering compartment retraction device, it carries equipment, tools, and spare parts. The compartment 8 is connected to connecting rod 2 and connecting rod 3 via two pins, and the compartment 8 carries equipment, tools, and spare parts.

[0056] The lowering compartment is assembled as shown in Figure 4. The compartment 8 mainly includes: a main body 801; a door 802; and pins 803 and 804 fixedly connected to the two sides of the main body 801. The door 802 is an upward-opening type, and can use a hydraulic spring or a gas spring as the auxiliary power for opening.

[0057] The purpose of this invention is to provide a chassis-driven lowering compartment device that allows the compartment, mounted on the chassis, to be lowered from both sides of the vehicle to a height easily accessible for personnel. This enables operators to stand on either side of the vehicle to retrieve equipment, tools, and spare parts. After the operation is completed, the lowering compartment returns to its initial position. This lowering compartment device effectively improves the safety of personnel and materials during operations, while reducing labor intensity, increasing spare parts retrieval efficiency, and meeting the needs of rapid maintenance and support.

[0058] The lowering compartment is powered by the chassis, which facilitates improved integration of the support vehicle and reduces space requirements and cost.

[0059] Example embodiments have been disclosed herein, and while specific terminology has been used, it is for general illustrative purposes only and should not be construed as limiting. In some embodiments, it will be apparent to those skilled in the art that features, characteristics, and / or elements described in connection with particular embodiments may be used alone, or in combination with features, characteristics, and / or elements described in connection with other embodiments, unless otherwise expressly indicated. Therefore, those skilled in the art will understand that various changes in form and detail may be made without departing from the scope of the invention as set forth by the appended claims.

Claims

1. A chassis-driven lowering pod device, characterized in that, The device includes: a base, connecting rod B, connecting rod C, connecting rod D, connecting rod E, a pressure rod, a hydraulic cylinder, and a cabin. The base is flat and located at the bottom. A base mounting seat is provided on the base. One end of connecting rod B is movably connected to the base mounting seat, and the other end is movably connected to the cabin. Connecting rod C is arranged parallel to connecting rod B, with one end of connecting rod C movably connected to the base mounting seat and the other end movably connected to the cabin. One end of connecting rod D is movably connected to connecting rod B, and the other end is movably connected to connecting rod C. Connecting rods B, C, and D, together with the base mounting seat, form a parallelogram structure. The fixed end of the hydraulic cylinder is set on the base, the movable end of the hydraulic cylinder is movably connected to one end of the connecting rod E, and the other end of the connecting rod E is movably connected to the connecting rod D; one end of the pressure rod is movably connected to the movable end of the hydraulic cylinder, and the other end is movably connected to the base mounting seat. The hydraulic cylinder retracts, causing the pressure rod, connecting rod E, connecting rod D, connecting rod C, and connecting rod B to retract, bringing connecting rod B and connecting rod C closer together and causing the cabin to retract into place.

2. The chassis-driven lowering pod device as described in claim 1, characterized in that, The base mounting seat is equipped with a cabin guide device, which is equipped with rollers and a bracket. The rollers are fixed to the base mounting seat by the bracket.

3. The chassis-driven lowering pod device as described in claim 2, characterized in that, The cabin guiding device is an elastic guiding mechanism, which also has a locking function. The inertial force generated when lowering the cabin is 4800N; the elastic preload force is 7500N.

4. The chassis-driven lowering pod device as described in claim 1, characterized in that, The base is also provided with a hydraulic cylinder mounting seat, which is used to movably mount the hydraulic cylinder.

5. The chassis-driven lowering pod device as described in claim 1, characterized in that, The cabin includes: cabin body, cabin door, and pivot pin; There are two pins: the first pin is used to movably connect to one end of the connecting rod B, and the second pin is used to movably connect to one end of the connecting rod C.

6. The chassis-driven lowering pod device as described in claim 1, characterized in that, The connecting rod E is subjected to tensile force, has high material utilization, minimal cross-section, stainless steel material at both ends of the hinge point, and a self-lubricating bushing at the tail.

7. The chassis-driven lowering pod device as described in claim 1, characterized in that, The pressure rod is constantly subjected to pressure during operation. The hinge points at both ends are made of stainless steel, and the tail end is equipped with a self-lubricating bushing.

8. A control method for a lowering pod device based on chassis power drive, characterized in that, The method is applied to the chassis-driven lowering pod device according to claim 1, and the method includes: Upon receiving the lowering command, the locking mechanism is unlocked, and the lowering compartment is lowered to the limit position. To facilitate the retrieval of equipment, tools, and spare parts inside the lowering compartment, the lowering compartment can be lowered to the required height. When it descends to the limit position, the control system will send a signal and stop moving. Once the lowering compartment lowering device is designed, the lowering limit position is determined by the maximum extension length of the hydraulic cylinder.

9. The control method for a chassis-driven lowering compartment device as described in claim 8, characterized in that, The method further includes: The retraction process is the reverse of the lowering process. When the cabin is fully retracted, the electronic control system will send a positioning signal and automatically lock it. The lowering cabin maintains translational motion in space throughout the movement. Driven by hydraulic cylinders, the linkage mechanism transmits power to the lowering cabin, thereby raising or lowering it. In the linkage mechanism, links B, C, and D, and the mounting base are connected in series to form a parallel four-bar linkage. Under the "leveling" effect of the parallel four-bar linkage, the lowering cabin always remains in a horizontal state.

10. The control method for a chassis-driven lowering compartment device as described in claim 9, characterized in that, The method further includes: When the hydraulic cylinder extends to its limit, the lower cabin is stretched onto the base via the parallel four-bar linkage. When the lowering action of the cabin is performed, the hydraulic cylinder pushes the connecting rod E and the pressure rod. The connecting rod E pushes the parallel four-bar linkage, causing the lowering cabin to perform a translational movement, moving along the motion curve to the lowest position. At this time, the hydraulic cylinder reaches its maximum extension state, and the lowering cabin is positioned for easy operation by personnel.

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