CN114801942A - Getting-on and getting-off auxiliary device, engineering truck and control method thereof - Google Patents
Getting-on and getting-off auxiliary device, engineering truck and control method thereof Download PDFInfo
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- CN114801942A CN114801942A CN202210629345.8A CN202210629345A CN114801942A CN 114801942 A CN114801942 A CN 114801942A CN 202210629345 A CN202210629345 A CN 202210629345A CN 114801942 A CN114801942 A CN 114801942A
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- 230000007246 mechanism Effects 0.000 claims description 11
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- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 3
- 239000000725 suspension Substances 0.000 abstract description 5
- 230000004044 response Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 3
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N3/00—Arrangements or adaptations of other passenger fittings, not otherwise provided for
- B60N3/02—Arrangements or adaptations of other passenger fittings, not otherwise provided for of hand grips or straps
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R3/00—Arrangements of steps or ladders facilitating access to or on the vehicle, e.g. running-boards
- B60R3/02—Retractable steps or ladders, e.g. movable under shock
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/56—Reuse, recycling or recovery technologies of vehicles
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Abstract
The application relates to vehicle engineering, in particular to an auxiliary device for getting on or off a vehicle, an engineering vehicle and a control method thereof, comprising a vehicle door sensing device for detecting whether a vehicle door is opened or not; the upper vehicle handle is connected with a first driving device, and the first driving device is used for extending or retracting the upper vehicle handle; the step plate is connected with a second driving device, and the second driving device is used for extending or retracting the step plate; and the control device is in signal connection with the vehicle door sensing device, the first driving device and the second driving device respectively. The beneficial effect that technical scheme that this application provided brought includes: the telescopic handrail of the vehicle getting-on handrail can be automatically controlled by sensing the opening and closing of the vehicle door, so that convenience is brought to the driver for getting on the vehicle, and the convenience for getting on and off the vehicle is improved. The accessible response door is opened, the extension of closed automatic control step board, is withdrawed, for the driver provides convenience of getting on the bus, when improving the convenience of getting on or off the bus, has solved the damage problem of current U type suspension type running-board colliding with.
Description
Technical Field
The application relates to vehicle engineering, in particular to an auxiliary device for getting on or off a vehicle, an engineering vehicle and a control method thereof.
Background
At present, the getting-on handrail of the engineering truck is fixed at a side wall doorframe, and mainly comprises a sectional type and an integral penetrating type, the getting-on handrail is arranged above a floor, the chassis of the engineering truck is higher, the floor ground clearance of a cab is higher, so that the getting-on handrail is higher in ground clearance, a small human body can not grab the handrail to step on the first-level step by standing on the tiptoe, and the getting-on convenience is poor.
The road conditions that the engineering truck generally travels are poor, so the chassis is high, the ground clearance of the first-level step of getting on the truck is high, the driver is difficult to get on the truck by stepping on the step, and the existing scheme is to add a U-shaped suspension type pedal under the first-level step. The chassis of the general design of relatively poor road conditions of traveling is higher for satisfying the machineshop car, increases a U type suspension type running-board under the one-level is marked time, can solve the problem of getting on the bus, but the running-board terrain clearance that increases reduces to be fit for trampling highly after, goes under the poor condition of road conditions such as building site, easily leads to U type suspension type running-board to collide with the damage.
Disclosure of Invention
The embodiment of the application provides an getting-on and getting-off auxiliary device, an engineering truck and a control method thereof, and aims to solve the problem that passengers with short bodies are difficult to get on the truck in the related art.
In a first aspect, an auxiliary device for getting on or off a vehicle is provided, which includes:
the vehicle door sensing device is used for detecting whether the vehicle door is opened;
the upper vehicle handle is connected with a first driving device, and the first driving device is used for extending or retracting the upper vehicle handle;
the step plate is connected with a second driving device, and the second driving device is used for extending or retracting the step plate;
and the control device is in signal connection with the vehicle door sensing device, the first driving device and the second driving device respectively.
In some preferred embodiments, the get-on handle comprises:
the handle sleeves are provided with a pair of handle sleeves which are arranged in parallel and are provided with a first limiting hole and a second limiting hole along the length direction;
the annular handle is a rectangular ring, two sides of the annular handle penetrate through the handle sleeve, and spring clips are arranged on two sides of the annular handle penetrating through the handle sleeve;
when the spring clamp is clamped in the first limiting hole or the second limiting hole, the handle sleeve and the annular handle are locked.
In some preferred embodiments, the annular handle is a hollow structure, and the side surface of the annular handle is provided with an ejection hole;
the spring clip includes:
the body is V-shaped, and the end part of the V is abutted against the inner wall of the annular handle;
and the spring end heads are arranged at the V-shaped two ends of the body and are inserted in the ejection holes in a sliding manner.
In some preferred embodiments, the first driving means comprises:
a motor for providing power;
one end of the rack is connected with the annular handle, and the other end of the rack is connected with the motor through the gear.
In some preferred embodiments, the second drive mechanism comprises:
the air chamber is provided with an air inlet valve and an air release valve at one end, the air inlet valve is connected with an air pipe assembly, and the air pipe assembly is used for connecting a high-pressure air tank of a vehicle;
one end of the support rod is arranged in the air chamber in a sliding mode and forms a sealing structure with the air chamber, and the other end of the support rod is provided with the step plate;
and the resetting device is arranged in the air chamber and sleeved outside the stay bar.
In some preferred embodiments, the step plate comprises:
a board body for stepping;
and the connecting rod is L-shaped, one end of the connecting rod is connected to the plate body, and the other end of the connecting rod is connected to the tail end of the support rod through a connecting piece.
On the other hand, the application also provides an engineering truck which is characterized by comprising the auxiliary device for getting on or off the truck;
a through hole for the upper handlebar to stretch is formed in the wheel cover of the engineering truck;
the step plate is positioned below the second-stage steps of the engineering truck.
In a third aspect, the present application further provides a control method based on the above engineering truck, which is characterized by including the following steps:
when the vehicle door is in a closed state, the upper vehicle handle retracts into the through hole, and the step plate is tightly attached to the second step plate;
when the vehicle door sensing device detects that the vehicle door is opened, the vehicle door sensing device sends a first signal to the control device, the control device sends a starting signal to the first driving device and the second driving device after receiving the first signal, the first driving device pushes the upper vehicle handle to completely extend out of the through hole after receiving the starting signal, and the second driving device pushes the step plate to extend out after receiving the starting signal until the step plate and the second-stage step form an inclined step shape;
when the door sensing device detects that the door is closed, the door sensing device sends a second signal to the control device, the control device sends a withdrawing signal to the first driving device and the second driving device after receiving the second signal, the first driving device pulls the upper handle until the upper handle is withdrawn from the through hole after receiving the withdrawing signal, and the second driving device withdraws the step plate until the step plate abuts against the second-stage step after receiving the withdrawing signal.
In some preferred embodiments, the get-on handle comprises: the handle sleeves are provided with a pair of handle sleeves which are arranged in parallel and are provided with a first limiting hole and a second limiting hole along the length direction; the annular handle is a rectangular ring, two sides of the annular handle penetrate through the handle sleeve, and spring clips are arranged on two sides of the annular handle penetrating through the handle sleeve;
the first driving device pushes the boarding handle to completely extend out of the through hole after receiving the starting signal and further comprises the following steps:
under the action of the pushing force of the first driving device, the spring clamp deforms and is separated from the first limiting hole, and when the spring clamp enters the second limiting hole, the first driving device stops running;
the first driving device pulls the boarding handle after receiving the retraction signal until the boarding handle is retracted from the through hole further comprises the following steps:
and under the action of the tensile force of the first driving device, the spring clamp deforms and is separated from the second limiting hole, and when the spring clamp enters the first limiting hole, the first driving device stops running.
In some preferred embodiments, the second drive mechanism comprises: the air chamber is provided with an air inlet valve and an air release valve at one end, the air inlet valve is connected with an air pipe assembly, and the air pipe assembly is used for connecting a high-pressure air tank of a vehicle; the support rod is arranged in the air chamber in a sliding mode, and the step plate is arranged at the tail end of the support rod; the resetting device is arranged in the air chamber and sleeved outside the stay bar;
after the second driving device receives the starting signal, the step plate is pushed to extend out until the step plate and the secondary step form an inclined step shape, and the method further comprises the following steps:
the air inlet valve is opened, the air release valve is closed, high-pressure air in a high-pressure air tank of the vehicle is guided to the air chamber by using the air pipe assembly, the support rod is pushed to extend out, so that the step plate connected with the support rod extends out, when the pressure in the air chamber reaches a preset value, the step plate and the secondary step form an inclined step shape, and the air inlet valve is closed;
the second driving device receives the withdrawing signal and withdraws the step plate until the step plate is completely attached to the second-level step, and the method further comprises the following steps:
the air release valve is opened, and the step plate is pulled back by utilizing the reset device until the top surface of the step plate is abutted against the bottom surface of the secondary step.
The beneficial effect that technical scheme that this application provided brought includes: the telescopic handrail of the vehicle getting-on handrail can be automatically controlled by sensing the opening and closing of the vehicle door, so that convenience is brought to the driver for getting on the vehicle, and the convenience for getting on and off the vehicle is improved.
The accessible response door is opened, the extension of closed automatic control step board, is withdrawed, for the driver facilitates the getting on the bus, when improving the convenience of getting on or off the bus, has solved the damage problem that collides with of current U type suspension type running-board.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is one embodiment of the present application;
fig. 2 is a schematic structural view of the upper handlebar in the embodiment shown in fig. 1.
Fig. 3 is a schematic structural view of the step plate in the embodiment shown in fig. 1.
Fig. 4 is a schematic structural view of the spring clip of the embodiment shown in fig. 1.
Fig. 5 is a schematic view of the embodiment of fig. 2 with the upper handle fully extended.
FIG. 6 is a schematic structural view of the spring clip just after being disengaged from the second position-limiting hole in the embodiment shown in FIG. 5.
Fig. 7 is a schematic view of the embodiment of fig. 5 with the upper handle fully extended.
Fig. 8 is a schematic structural diagram of a second driving device in the embodiment shown in fig. 1.
In the figure: 1. a door sensing device; 2. a vehicle getting-on handle; 21. a handle sleeve; 211. a first limit hole; 212. a second limiting hole; 22. an annular handle; 23. a spring clamp; 231. a body; 232. a spring end; 3. a first driving device; 31. a motor; 32. a rack; 4. a step plate; 41. a board body; 42. a connecting rod; 5. a second driving device; 51. an air chamber; 511. an intake valve; 512. an air release valve; 52. a stay bar; 53. a resetting device; 6. a control device; 7. through the aperture.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The pull handle is now a standard part of the automobile, the pull handle is arranged in the automobile to assist passengers when the passengers enter and leave the automobile, and the general pull handle is arranged at the position of a door, so that the passengers with small sizes or the passengers with large loads are difficult to get on the automobile.
In order to solve the above problem, as shown in fig. 1, an embodiment of the present application provides an getting on/off auxiliary device, which includes: sensing device, upper handlebar 2, step plate 4 and control device 6.
The sensing device is mainly used for detecting whether the vehicle door is opened or not, the sensing device in the embodiment is composed of a laser ranging sensor and a wire harness, wherein the laser ranging sensor is fixed on a side wall threshold, and the laser ranging sensor is used for judging whether the vehicle door is opened or closed through measuring the distance change between the vehicle door and the threshold.
The upper handlebar 2 is connected to a first drive means 3, and typically the first drive means 3 is fixedly mounted on the vehicle. The tread plate 4 is connected to a second drive means 5, the second drive means 5 also being fixedly mounted on the vehicle.
And the control device 6 is respectively in signal connection with the vehicle door sensing device 1, the first driving device 3 and the second driving device 5. Specifically, in the present embodiment, the control system is composed of an ECU and a wire harness, and the ECU sends a push-out or retraction command to the first driving device 3 and the second driving device 5 after receiving a door opening or closing signal of the laser distance measuring sensor.
The conventional upper handle 2 is fixedly mounted near a door or a wheel hub, and is generally a detachable member, and the upper handle 2 of this type is difficult to use, and after the vehicle is loaded, the user needs to go out to remove the upper handle 2, which may cause the vehicle to turn over.
Thus in some preferred embodiments, as shown in fig. 2, the upper handlebar 2 comprises a handlebar sleeve 21 and an annular handlebar 22. The annular handle 22 is a rectangular ring structure, two long edges of the annular handle are arranged in the handle sleeve 21, the handle sleeve 21 is made of hard materials, the handle sleeve 21 is generally mounted on a vehicle, and then the annular handle 22 is sleeved in the handle sleeve 21. Simultaneously in order to prevent that annular handle 22 from the incessant slip influence of when the bus is last to use and experiencing, be provided with the spacing hole of first spacing hole 211 and second 212 on the handle sleeve 21, and be provided with spring clamping 23 on the annular handle 22, when spring clamping 23 card was in the spacing hole of first spacing hole 211 or second 212, annular handle 22 just locked in handle sleeve 21, be difficult for sliding to influence to use and experience in the time of last sudden slip.
The spring clip 23 can be constructed in various ways, such as installing a spring between the annular handle 22 and the handle sleeve 21, pulling the spring with a wire, pulling the spring with the wire when the annular handle 22 needs to be moved, and pulling the wire when the annular handle 22 needs to be clipped, wherein the spring is bounced to clip the annular handle 22 on the handle sleeve 21. However, this method is complicated in structure and is liable to cause damage to parts and components.
Therefore, in some preferred embodiments, as can be seen in fig. 4 to 7 in particular, the annular handle 22 is a hollow structure with an ejection hole formed in a side surface thereof.
And spring clip 23 includes a body 231 and a spring tip 232. The body 231 is a structure close to a V shape, and has certain elasticity, generally speaking, the spring clip 23 can be pulled only by a pulling force of 40-60N along the central axis of the V shape, and the vertical force is mainly generated during boarding, and the horizontal force is very small, so that the spring clip 23 cannot be easily pulled to be separated from the first limiting hole 211 or the second limiting hole 212 during boarding.
And spring end 232 of spring clip 23 is a cylinder structure, and the head is the hemisphere simultaneously, and spring end 232 can effectively play the effect of locking when power is less, and when power increases to the specified value and makes the sphere of spring end 232 contact the butt surface, can make spring clip 23 compress rapidly and warp, releases the locking.
In some embodiments, the first driving device 3 may use a power source such as a cylinder, etc., but since the upper handrail generally has a locking structure, the first driving device 3 should stop working immediately after the upper handrail is locked, so as to avoid damaging the locking device of the upper handrail. And the general hydraulic and pneumatic power sources have long response time and are difficult to meet the requirement of quick response.
In some preferred embodiments, therefore, the first drive means 3 comprise a motor 31 and a rack 32. Wherein the output pot head of motor 31 is equipped with the gear wherein, and motor 31 passes through the gear and connects with rack 32, and rack 32 connects in getting on the bus handrail. The motor 31 can directly detect the current inside itself for control, for example, when the getting-on handrail is locked, the rack 32 can not move forward continuously temporarily, at this time, because the current in the motor 31 is suddenly increased due to the loss of the load, it can be determined that the getting-on handrail is locked, and then the motor 31 is turned off.
In some embodiments, the second driving device 5 uses oil pressure, the motor 31, and other mechanisms as power sources, but on one hand, the motor 31 has a high requirement on the motor 31 as a power source, and the use of hydraulic oil as a power source also requires a complicated hydraulic oil storage mechanism and a hydraulic oil recovery mechanism.
Thus in some preferred embodiments, the second drive mechanism comprises an air chamber 51 and a strut 52. Wherein the air chamber 51 has an inlet valve 511 and an outlet valve. The intake valve 511 is connected to the air pipe assembly for taking high pressure air from the high pressure air pipe of the vehicle.
And the stay 52 is disposed in the air chamber 51, and one end of the stay forms a sealed structure with the air chamber 51, so that when the air chamber 51 is filled with high-pressure gas, the stay 52 is pushed outwards, and the stay 52 is extended. A reset device 53 is also provided in the air chamber 51, and when the air is released through the release valve 512, the reset device 53 will pull the stay 52 back. In this embodiment, the return device 53 is a spring, one end of which is connected to the inner wall of the air chamber 51 away from the stay 52, and the other end of which is connected to the end of the stay 52. And the other end of the stay 52 is connected to the aforementioned step plate 4.
In some embodiments, the footplate 4 is a single plate directly connected to the stay 52, but the footplate 4 connected in this way may be bent after a long period of use, and often it is not necessary to find a suitable repair point. Therefore, in some preferred embodiments, the step plate 4 includes a plate body 41 and a connecting rod 42, wherein the plate body 41 is a flat plate for a person to step on, and the connecting rod 42 is a plate member close to an L shape, and one end of the connecting rod is connected with the stay bar 52 through a connecting member, so that the installation angle can be adjusted when the plate body 41 is bent, so that the plate body 41 is close to a horizontal position again, and the service life is prolonged.
On the other hand, the application also provides a machineshop car which is characterized by comprising the getting-on and getting-off auxiliary device.
And a through hole 7 for the upper handlebar 2 to stretch is formed in the wheel cover of the engineering truck.
The step plate 4 is positioned below the second-level steps of the engineering vehicle.
The present application also provides a control method for controlling the above-mentioned getting on/off auxiliary device mounted on a working vehicle, comprising the steps of:
when the door is in the closed position, the upper handle 2 is retracted through the aperture 7 and the tread plate 4 abuts the second tread.
When door induction system 1 detects that the door is opened, door induction system 1 sends first signal to controlling means 6, and controlling means 6 receives first signal back and sends the start signal to first drive arrangement 3 and second drive arrangement 5, and first drive arrangement 3 promotes get on bus handle 2 and stretches out completely in receiving the start signal from the clearing hole 7, and second drive arrangement 5 receives the start signal after, promotes flier 4 and stretches out, and it forms the slope stairstepping to mark time with the second grade until flier 4.
When the door sensing device 1 detects that the door is closed, the door sensing device 1 sends a second signal to the control device 6, the control device 6 sends a withdrawing signal to the first driving device 3 and the second driving device 5 after receiving the second signal, the first driving device 3 pulls the upper handle 2 until the upper handle 2 is withdrawn from the through hole 7 after receiving the withdrawing signal, and the second driving device 5 retracts the step plate 4 until the step plate 4 is abutted to the second-stage step after receiving the withdrawing signal.
Since the ring handle 22 has two locked states with the handle sleeve 21, if the power of the first driving means 3 is continuously maintained while the ring handle 22 is in the locked state, the handle sleeve 21 is easily damaged.
Thus, in some further embodiments, the upper handlebar 2 comprises: a pair of handle sleeves 21, which are arranged in parallel and are provided with a first limit hole 211 and a second limit hole 212 along the length direction; the annular handle 22 is a rectangular ring, two sides of the annular handle 22 penetrate through the handle sleeve 21, and spring clips 23 are arranged on two sides of the annular handle 22 penetrating through the handle sleeve 21;
the first driving device 3 pushes the upper vehicle handle 2 to be completely extended out of the through hole 7 after receiving the starting signal and further comprises the following steps:
under the action of the pushing force of the first driving device 3, the spring clamp 23 deforms and is disengaged from the first limiting hole 211, and when the spring clamp 23 enters the second limiting hole 212, the first driving device 3 stops running;
the step of pulling the upper handlebar 2 until the upper handlebar 2 is retracted from the passing hole 7 after the first driving means 3 receives the retraction signal further comprises the steps of:
under the action of the pulling force of the first driving device 3, the spring clip 23 deforms and is released from the second limiting hole 212, and when the spring clip 23 enters the first limiting hole 211, the first driving device 3 stops running.
In a further embodiment, as shown in fig. 3 and 8, the second driving mechanism comprises: the air chamber 51 is provided with an air inlet valve 511 and an air release valve 512 at one end, wherein the air inlet valve 511 is connected with an air pipe assembly, and the air pipe assembly is used for connecting a high-pressure air tank of a vehicle; a stay 52 slidably disposed in the air chamber 51, the step plate 4 being disposed at a distal end of the stay 52; a reset device 53 disposed in the air chamber 51 and sleeved outside the stay rod 52;
after receiving the starting signal, the second driving device 5 pushes the step plate 4 to extend out until the step plate 4 and the second-level step form an inclined step shape, and the method further comprises the following steps:
the air inlet valve 511 is opened, the air release valve 512 is closed, high-pressure air in a high-pressure air tank of the vehicle is guided to the air chamber 51 by using the air pipe assembly, the support rod 52 is pushed to extend out, so that the step plate 4 connected with the support rod 52 extends out, when the pressure in the air chamber 51 reaches a preset value, the step plate 4 and the secondary step form an inclined step shape, and the air inlet valve 511 is closed;
after receiving the withdrawing signal, the second driving device 5 withdraws the step plate 4 until the step plate 4 and the second-level step are completely jointed, and the method further comprises the following steps:
the release valve 512 is opened, and the resetting device 53 is used to pull back the stepping plate 4 until the top surface of the stepping plate 4 abuts against the bottom surface of the secondary step.
The present application is specifically illustrated with an embodiment as shown in fig. 1-8.
The present embodiment mainly aims to improve the convenience of getting on and off the engineering truck, and comprises a sensing device, a control system, a handle 2 for getting on the truck, a first driving device 3, a step plate 4 and a second driving device 5.
The sensing device mainly comprises a series of laser ranging sensors arranged near a door frame of the vehicle door, and the sensors are connected with each other through a wire harness.
The control device 6 mainly depends on the ECU of the vehicle, and a wire harness is connected to the electric motor 31, an air inlet valve 511 and an air release valve 512.
Get on bus handrail mainly includes handle sleeve 21 and annular handle 22, is provided with first spacing hole 211 and the spacing hole 212 of second on the handle sleeve 21, and the inside cavity of annular handle 22 sets up, is provided with spring clamping 23 in the cavity, and spring clamping 23 includes the body 231 of V-arrangement and sets up the spring end 232 at both ends, and spring end 232 stretches out the joint on first spacing hole 211 or the spacing hole 212 of second from the pop-up hole on the annular handle 22.
The first driving means 3 includes a motor 31 and a rack 32, the rack 32 is connected to the loop handle 22 for controlling the extension and contraction of the loop handle 22, and the motor 31 is connected to the loop handle 22 through a gear.
The second driving means 5 includes a gas chamber 51, the gas chamber 51 is provided with an intake valve 511 and an escape valve 512, the intake valve 511 is connected to a high pressure gas tank of the vehicle through a gas pipe assembly, and the air is supplied through the high pressure gas tank, and the escape valve 512 directly discharges the high pressure gas to the atmosphere. The air chamber 51 is also provided with a resetting device 53 and a stay rod 52, one end of the stay rod 52 and the air chamber 51 form a sealing structure, when the air inlet valve 511 is filled with high-pressure air, the stay rod 52 is pushed to extend, meanwhile, the internal air pressure also ensures that the stay rod 52 cannot be separated from the air chamber 51, the air escape valve 512 exhausts the air in the air chamber after the work is finished, and the stay rod 52 is retracted through the resetting device 53.
When a driver prepares to get on the vehicle, the driver pulls the outward opening handle of the vehicle door to open the vehicle door, the laser ranging sensor senses that the distance between the vehicle door and the threshold is increased, the vehicle door is judged to be opened, and a signal A1 is sent to the ECU; after receiving the door opening signal, the ECU sends signals C1 and D1 to the first driving device 3 and the second driving device 5, respectively, which has the following effects:
1. the signal C1 controls the motor 31 of the first driving device 3 to rotate forward, and the motor 31 pushes the getting-on handrail outward through the rack-and-pinion mechanism 32. When the motor 31 detects that the spring clamp 23 is clamped with the second limiting hole 212 to cause current fluctuation, the spring clamp 23 is confirmed to be connected with the second limiting hole 212, and the motor 31 is closed at the moment to stop outputting power.
2. The signal D1 controls the air inlet valve 511 of the pneumatic one-step to open and the air release valve 512 to keep closed, and the high-pressure air in the vehicle air tank enters the air chamber 51 through the air inlet valve 511 to push the stay bar 52 and the step plate 4 to move downwards. When the vehicle door reaches a completely opened state, the laser ranging sensor senses that the distance between the vehicle door and the threshold reaches a preset value, a signal A2 is sent to the ECU, the ECU respectively sends signals C2 and D2 to control the motor 31 to stop working, the air inlet valve 511 of the air chamber 51 is closed, the upper vehicle handrail is pushed out to a locking state of the V-shaped spring clamp 23 and the guide rail limiting hole, the first-stage step and supporting rod 52 is pressed to the bottom of the air chamber 51 by high-pressure gas to be in a locking state, and the resetting device 53 also means that the spring is in a stretching state. The driver can easily step on the first step to grasp the getting-on handrail to get on the vehicle when standing on the ground.
When a driver gets on the vehicle and sits and is ready to close the door, the driver pulls the handle of the door protection plate, the laser ranging sensor senses that the distance between the vehicle door and the threshold is reduced, the vehicle door is judged to be closed, and a signal B1 is sent to the ECU; after receiving the door closing signal, the ECU sends signals C3 and D3 to the first driving device 3 and the second driving device 5, respectively, which have the following effects
1. The signal C3 controls the motor 31 of the electric getting-on handrail to rotate reversely, and the motor 31 retracts the getting-on handrail inwards through the gear rack 32 mechanism. When the spring clip 23 is clipped into the first limit hole 211, it indicates that the upper handrail has been completely retracted, and the motor 31 is unable to continuously pull the load to cause a change in current, and after detecting a corresponding change in current, it can be considered that the upper handrail has been completely retracted, and then the output of power is stopped.
2. The signal D3 controls the release valve 512 of the pneumatic first step to open and the intake valve 511 to keep closed, and after the pressure of the air chamber 51 is reduced, the reset device 53 slowly restores from the stretching state to the initial state, and drives the stay bar 52 and the first step to move upward. When the vehicle door reaches a completely closed state, the laser ranging sensor senses that the space between the vehicle door and the threshold is in a closed state, a signal B2 is sent to the ECU, the ECU respectively sends signals C4 and D4 to control the motor 31 to stop working and the air release valve 512 of the air chamber 51 to be closed, at the moment, the upper vehicle handrail moves inwards to a state of being hidden in a wheel cover, and the first-stage step and the stay bar 52 move upwards to a state of being hidden in a fixed second-stage step. When a driver drives in poor road conditions, the first-level step cannot be damaged due to collision with the periphery due to the fact that the height of the first-level step is increased.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides an auxiliary device that gets on or off bus which characterized in that, it includes:
the vehicle door sensing device (1) is used for detecting whether a vehicle door is opened;
the upper vehicle handle (2) is connected with a first driving device (3), and the first driving device (3) is used for extending or retracting the upper vehicle handle (2);
a step plate (4) connected to a second driving means (5), the second driving means (5) being for extending or retracting the step plate (4);
and the control device (6) is respectively in signal connection with the vehicle door sensing device (1), the first driving device (3) and the second driving device (5).
2. The getting-on/off assist device as claimed in claim 1, wherein the getting-on handle (2) comprises:
a pair of handle sleeves (21) which are arranged in parallel and are provided with a first limit hole (211) and a second limit hole (212) along the length direction;
the annular handle (22) is a rectangular ring, two sides of the annular handle penetrate through the handle sleeve (21), and spring clips (23) are arranged on two sides of the annular handle (22) penetrating through the handle sleeve (21);
when the spring clamp (23) is clamped in the first limiting hole (211) or the second limiting hole (212), the handle sleeve (21) and the annular handle (22) are locked.
3. The getting-on and getting-off assisting device as claimed in claim 2, wherein the annular handle (22) is of a hollow structure, and an ejection hole is formed in the side surface;
the spring clip (23) includes:
a body (231) which is V-shaped, and the end part of the V is abutted against the inner wall of the annular handle (22);
and spring end heads (232) which are arranged at the two V-shaped ends of the body (231) and are inserted in the ejection holes in a sliding manner.
4. The getting-on/off assist device according to claim 2, wherein the first driving device (3) comprises:
a motor (31) for providing power;
and one end of the rack (32) is connected to the annular handle (22), and the other end of the rack is connected with the motor (31) through a gear.
5. The getting-on/off assist device as claimed in claim 1, wherein:
the second drive mechanism includes:
the air chamber (51) is provided with an air inlet valve (511) and an air release valve (512) at one end, the air inlet valve (511) is connected with an air pipe assembly, and the air pipe assembly is used for connecting a high-pressure air tank of a vehicle;
one end of the support rod (52) is arranged in the air chamber (51) in a sliding mode and forms a sealing structure with the air chamber (51), and the other end of the support rod is provided with the step plate (4);
and the resetting device (53) is arranged in the air chamber (51) and sleeved outside the support rod (52).
6. The getting-on/off assist device according to claim 5, wherein the step plate (4) comprises:
a board body (41) for stepping;
and the connecting rod (42) is L-shaped, one end of the connecting rod is connected to the plate body (41), and the other end of the connecting rod is connected to the tail end of the support rod (52) through a connecting piece.
7. A working vehicle, characterized by comprising the getting-on/off assist device according to any one of claims 1 to 6;
a through hole (7) for the upper vehicle handle (2) to stretch is formed in the wheel cover of the engineering vehicle;
the step plate (4) is positioned below the secondary steps of the engineering truck.
8. The control method of the engineering truck according to claim 7, characterized by comprising the following steps:
when the vehicle door is in a closed state, the upper vehicle handle (2) retracts into the through hole (7), and the step plate (4) is tightly attached to the second step plate;
when the vehicle door sensing device (1) detects that the vehicle door is opened, the vehicle door sensing device (1) sends a first signal to the control device (6), the control device (6) sends a starting signal to the first driving device (3) and the second driving device (5) after receiving the first signal, the first driving device (3) pushes the upper vehicle handle (2) to completely extend out of the through hole (7) after receiving the starting signal, and the second driving device (5) pushes the step plate (4) to extend out after receiving the starting signal until the step plate (4) and the secondary step form an inclined step shape;
when the vehicle door sensing device (1) detects that the vehicle door is closed, the vehicle door sensing device (1) sends a second signal to the control device (6), the control device (6) sends a withdrawing signal to the first driving device (3) and the second driving device (5) after receiving the second signal, the first driving device (3) receives the withdrawing signal and then pulls the upper vehicle handle (2) until the upper vehicle handle (2) withdraws from the through hole (7), and the second driving device (5) receives the withdrawing signal and then withdraws the step plate (4) until the step plate (4) and the secondary step are abutted.
9. The control method according to claim 8, characterized in that:
the get-on handle (2) comprises: a pair of handle sleeves (21) which are arranged in parallel and are provided with a first limit hole (211) and a second limit hole (212) along the length direction; the annular handle (22) is a rectangular ring, two sides of the annular handle penetrate through the handle sleeve (21), and spring clips (23) are arranged on two sides of the annular handle (22) penetrating through the handle sleeve (21);
the first driving device (3) pushes the upper vehicle handle (2) to completely extend out of the through hole (7) after receiving the starting signal, and the method further comprises the following steps:
under the action of the pushing force of the first driving device (3), the spring clamp (23) deforms and is separated from the first limiting hole (211) to unlock the annular handle (22), when the spring clamp (23) enters the second limiting hole (212), the annular handle (22) is locked, and the first driving device (3) stops running;
the first driving device (3) pulls the upper vehicle handle (2) after receiving the retraction signal until the upper vehicle handle (2) is retracted from the passing hole (7) further comprises the following steps:
under the action of the pulling force of the first driving device (3), the spring clamp (23) deforms and is separated from the second limiting hole (212), the annular handle (22) is unlocked, when the spring clamp (23) enters the first limiting hole (211), the annular handle (22) is locked, and the first driving device (3) stops running.
10. The control method according to claim 8, characterized in that:
the second drive mechanism includes: the air chamber (51) is provided with an air inlet valve (511) and an air release valve (512) at one end, the air inlet valve (511) is connected with an air pipe assembly, and the air pipe assembly is used for connecting a high-pressure air tank of a vehicle; a stay bar (52) slidably disposed in the air chamber (51), the step plate (4) being disposed at a distal end of the stay bar (52); a resetting device (53) which is arranged in the air chamber (51) and sleeved outside the support rod (52);
after receiving the starting signal, the second driving device (5) pushes the step plate (4) to extend out until the step plate (4) and the secondary steps form an inclined step shape, and the method further comprises the following steps:
the air inlet valve (511) is opened, the air release valve (512) is closed, high-pressure air in a high-pressure air tank of the vehicle is guided to the air chamber (51) by using the air pipe assembly, the support rod (52) is pushed to extend out, so that the step plate (4) connected with the support rod (52) extends out, when the pressure in the air chamber (51) reaches a preset value, the step plate (4) and the secondary step form an inclined step shape, and the air inlet valve (511) is closed;
after receiving the withdrawing signal, the second driving device (5) withdraws the step plate (4) until the step plate (4) is completely attached to the second-level step, and the method further comprises the following steps:
the air release valve (512) is opened, and the step plate (4) is pulled back by the reset device (53) until the top surface of the step plate (4) is abutted against the bottom surface of the secondary step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210629345.8A CN114801942B (en) | 2022-05-31 | 2022-05-31 | Get-on/off auxiliary device, engineering truck and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210629345.8A CN114801942B (en) | 2022-05-31 | 2022-05-31 | Get-on/off auxiliary device, engineering truck and control method thereof |
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| CN114801942A true CN114801942A (en) | 2022-07-29 |
| CN114801942B CN114801942B (en) | 2023-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210629345.8A Active CN114801942B (en) | 2022-05-31 | 2022-05-31 | Get-on/off auxiliary device, engineering truck and control method thereof |
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| CN114801942B (en) | 2023-05-05 |
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