Fuel oil filling device

Abstract

The utility model relates to the technical field of fuel oil filling, in particular to a fuel oil filling device which comprises a vehicle body, a tank body, a walking mechanism, a steering mechanism and a conveying mechanism. The tank body is used for storing fuel oil, and the walking mechanism can support the vehicle body and can drive the vehicle body to move. The steering mechanism can support the vehicle body and can achieve steering of the vehicle body, and the conveying mechanism can inject fuel oil into the tank body and inject the fuel oil in the tank body into oil consuming equipment. According to the fuel oil filling device, automatic running and steering of a vehicle body can be achieved, and fuel oil filling of fixed equipment in a factory is completed; and the steering mechanism comprises a driving assembly, a first speed reducer and a steering assembly, the driving assembly comprises a first motor and a hand wheel, the first motor and the hand wheel can drive the first speed reducer correspondingly, electric control and manual control over steering of the vehicle body can be achieved at the same time, and multiple guarantees are provided for sudden failures.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel filling, in particular to a fuel filling device. Background Art

[0002] Fuel filling is the oil transfer equipment that directly refuels motor vehicles, fixed equipment, etc. When fixed equipment in a factory that uses diesel as fuel needs to be refueled, it is usually transported by large tank trucks or transported to the vicinity of the equipment using oil drums for refueling. The following problems exist in this process: the factory environment is narrow and large tank trucks cannot reach; the oil drums cannot be moved quickly, and the refueling is done manually or with mobile oil pumps, which is inefficient; before the fuel is added to the equipment tank, special equipment is required to filter it; the amount of fuel refueled cannot be monitored and cannot be controlled. There is a small fuel filling device in the prior art, but it requires an additional tractor for towing, which is extremely inconvenient to use. Therefore, there is an urgent need for a fuel filling device. Utility Model Content

[0003] The utility model aims to provide a fuel filling device, which can quickly and conveniently fill fuel for fixed equipment.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] Fuel filling device, including:

[0006] Vehicle body;

[0007] A tank body, arranged on the vehicle body, and used for storing fuel;

[0008] A walking mechanism is arranged at the rear end of the vehicle body, and the walking mechanism is used to support the vehicle body and can drive the vehicle body to move;

[0009] A steering mechanism, the steering mechanism is arranged at the front end of the vehicle body and is used to support the vehicle body. The steering mechanism includes a driving assembly, a first reducer and a steering assembly. The driving assembly can drive the steering assembly to move through the first reducer to achieve the steering of the vehicle body;

[0010] The driving assembly includes a first motor and a handwheel, and the first motor and the handwheel can drive the first reducer respectively;

[0011] The transmission mechanism is arranged on the vehicle body, and is used for injecting fuel into the tank body, and for filling the fuel in the tank body into the oil-consuming equipment.

[0012] Furthermore, two first reducers are provided, and two groups of the steering assemblies are provided. The two first reducers correspond to the two groups of the steering assemblies one by one, and each group of the steering assemblies includes:

[0013] A steering longitudinal shaft, wherein the steering longitudinal shaft is connected to the first reducer;

[0014] A steering transverse axis, which is disposed at the bottom of the steering longitudinal axis and is perpendicular to the steering longitudinal axis;

[0015] The steering wheel group comprises two steering wheels, and the two steering wheels are symmetrically arranged at two ends of the steering transverse axis.

[0016] Furthermore, the steering mechanism also includes a direction feedback shaft, which is connected to the top of one of the steering longitudinal axes, and is used to feed back the steering angle of the steering longitudinal axis.

[0017] Furthermore, the fuel filling device also includes a shock absorbing mechanism, which is arranged on the vehicle body. There are two groups of shock absorbing mechanisms, which are connected to the two groups of steering assemblies in a one-to-one correspondence.

[0018] Furthermore, the shock absorbing mechanism includes a support seat, a spring, and a spring disk. The support seat is arranged on the vehicle body and is mounted on the steering longitudinal axis. One end of the spring is fixedly mounted on the support seat, and the other end is arranged on the spring disk. The spring disk is arranged on the steering transverse axis.

[0019] Furthermore, the walking mechanism comprises:

[0020] Second motor;

[0021] A second reducer, the second reducer comprises a stepless reducer and a parallel shaft helical gear reducer, the parallel shaft helical gear reducer is connected to the output end of the stepless reducer, and the second motor is used to drive the stepless reducer;

[0022] The walking assembly includes a walking shaft and a walking wheel. The walking wheel is sleeved on the walking shaft. Two walking shafts are provided. The walking wheels are arranged in a one-to-one correspondence with the walking shafts. The two walking shafts are respectively connected to the two ends of the parallel shaft helical gear reducer. The parallel shaft helical gear reducer drives the walking shaft to rotate to realize the rotation of the walking wheel.

[0023] Furthermore, the traveling mechanism also includes a coupling, and the coupling is used to connect the parallel shaft helical gear reducer and the traveling shaft.

[0024] Furthermore, the fuel filling device also includes a liquid level gauge, which is arranged on the tank body and is used to measure the liquid level of the fuel in the tank body.

[0025] Furthermore, the fuel filling device also includes a filter, which is arranged on the connecting pipeline between the tank body and the oil-consuming equipment, and is used to filter the fuel filled from the tank body to the oil-consuming equipment.

[0026] Furthermore, the fuel filling device also includes a flow meter, which is arranged on the connecting pipeline between the tank body and the fuel-consuming equipment, and is used to detect the flow rate of the fuel flowing into the fuel-consuming equipment.

[0027] Beneficial effects of the utility model:

[0028] The utility model provides a fuel filling device, which includes a vehicle body, a tank body, a running mechanism, a steering mechanism and a transmission mechanism. The tank body is used to store fuel, the running mechanism can support the vehicle body and drive the vehicle body to move; the steering mechanism can support the vehicle body and realize the steering of the vehicle body, and the transmission mechanism can inject fuel into the tank body and fill the fuel in the tank body to the oil-using equipment. The fuel filling device can realize the automatic driving and steering of the vehicle body, and complete the fuel filling of fixed equipment in the factory; the steering mechanism includes a driving assembly, a first reducer and a steering assembly, the driving assembly includes a first motor and a handwheel, the first motor and the handwheel can respectively drive the first reducer, and can simultaneously realize the electric control and manual control of the steering of the vehicle body, providing multiple protections for sudden failures. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a front view of the fuel filling device provided by the embodiment of the utility model;

[0030] Figure 2 It is a rear view of the fuel filling device provided by the embodiment of the utility model;

[0031] Figure 3 The utility model provides a cross-sectional view of the fuel filling device Figure 1 ;

[0032] Figure 4 The utility model provides a cross-sectional view of the fuel filling device Figure 2 ;

[0033] Figure 5 It is a structural schematic diagram of a transmission mechanism provided by an embodiment of the utility model;

[0034] Figure 6 It is a diagram of the fuel transmission process in the fuel filling device provided in the embodiment of the utility model.

[0035] In the figure:

[0036] 1. Car body;

[0037] 2. Tank body; 21. Drain valve; 22. Breathing valve;

[0038] 3. Traveling mechanism; 31. Second motor; 32. Second reducer; 321. Stepless reducer; 322. Parallel shaft helical gear reducer; 33. Traveling assembly; 331. Traveling shaft; 332. Traveling wheel; 34. Coupling; 341. Active coupling; 342. Driven coupling; 35. First drive shaft; 36. Motor transition flange;

[0039] 4. Steering mechanism; 41. Driving assembly; 411. First motor; 412. Hand wheel; 42. First reducer; 43. Steering assembly; 431. Steering longitudinal axis; 432. Steering transverse axis; 433. Steering wheel; 44. Direction feedback axis; 45. Second driving axis;

[0040] 5. Transmission mechanism; 51. Hose reel; 511. First hose reel; 512. Second hose reel; 52. Oil pump; 53. First isolation valve; 54. Second isolation valve; 55. Third isolation valve;

[0041] 6. shock absorbing mechanism; 61. support seat; 62. support sleeve; 63. spring; 64. spring disc;

[0042] 7. Liquid level meter; 8. Filter; 81. Coarse filter; 82. Fine filter; 9. Flow meter; 10. Battery. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0044] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0046] In the description of the present utility model, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0047] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0049] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0050] Combine the following Figure 1-6 The technical solution of the utility model is further described through specific implementation methods.

[0051] like Figure 1-4As shown, the fuel filling device provided in this embodiment includes: a vehicle body 1, a tank body 2, a running mechanism 3, a steering mechanism 4 and a transmission mechanism 5. The tank body 2 is arranged on the vehicle body 1 for storing fuel; the running mechanism 3 is arranged at the rear end of the vehicle body 1 for supporting the vehicle body 1 and being able to drive the vehicle body 1 to move; the steering mechanism 4 is arranged at the front end of the vehicle body 1 for supporting the vehicle body 1 and being able to realize the steering of the vehicle body 1; the transmission mechanism 5 is arranged on the vehicle body 1 for injecting fuel into the tank body 2 and for filling the fuel in the tank body 2 into the oil-using equipment. The fuel filling device can realize the automatic driving and steering of the vehicle body 1 and complete the fuel filling of the fixed equipment in the factory.

[0052] In order to improve the aesthetics of the fuel filling device and prevent rust and corrosion on the outer surface, in this embodiment, the outer surfaces of the vehicle body 1 and the tank body 2 are spray-painted. The paint color number used is RAL1023, and the total dry film thickness of the paint is ≥80μm, which plays a certain protective role on the surface.

[0053] Before injecting fuel into the tank 2, the sealing of the tank 2 must be tested. Specifically, fill the tank 2 with clean water for 24 hours. Ensure that there is no leakage in all parts and that the tank 2 is not deformed. This can determine that the stability and sealing of the inside of the tank 2 are good. It is also necessary to ensure that the connecting pipelines on the fuel filling device are normal. Specifically, after the inside of the tank 2 is dried, use simulated media to perform container filling and simulated filtration tests. The filling volume is controlled at ≥50L / min. The pressure and differential pressure monitoring and display are normal. Then, the tank 2 can be injected with fuel.

[0054] In this embodiment, the effective volume inside the tank body 2 is 1.2 cubic meters, the outer dimensions are 2700mm*1450mm*2655mm, and the mass is 1898kg. Optionally, a through hole with a diameter of 498mm is opened on the top of the tank body 2, and the through hole is sealed by a cover plate and a sealing gasket. The cover plate and the tank body 2 are hinged, and the first hose reel 511 can be directly refilled with fuel through the through hole after being damaged.

[0055] The following describes in detail the process of moving and turning the vehicle body 1 of the fuel filling device provided in this embodiment.

[0056] like Figure 3As shown, the walking mechanism 3 includes a second motor 31, a second reducer 32 and a walking assembly 33, wherein the second reducer 32 includes a stepless reducer 321 and a parallel shaft helical gear reducer 322, the second motor 31 can drive the second reducer 32, the parallel shaft helical gear reducer 322 is connected to the output end of the stepless reducer 321, the walking assembly 33 includes a walking shaft 331 and a walking wheel 332, the walking wheel 332 is sleeved on the walking shaft 331, two walking shafts 331 are provided, the walking wheels 332 and the walking shafts 331 are arranged in a one-to-one correspondence, the two walking shafts 331 are respectively connected to the two ends of the parallel shaft helical gear reducer 322, further, the parallel shaft helical gear reducer 322 is connected to the walking shaft 331 through the first driving shaft 35, the parallel shaft helical gear reducer 322 drives the walking shaft 331 to rotate through the first driving shaft 35, realizes the rotation of the walking wheel 332, and then realizes the movement of the vehicle body 1. In this embodiment, the walking mechanism 3 is connected to the controller, and the automatic remote control movement of the vehicle body 1 can be realized through the controller. For narrow areas, it can move slowly, and for open areas, it can increase the forward speed, so as to adapt to driving in different environments. Furthermore, the second motor 31 is connected to the stepless reducer 321 through the motor transition flange 36, which ensures the stable and efficient operation of the second motor 31.

[0057] In this embodiment, the model of the parallel shaft helical gear reducer 322 is FA77-12.2, the speed ratio is 12.2:1, the maximum output speed is 175r / min, and the output end load torque is ≥1000N·m, which makes the transmission more stable and has a greater load capacity.

[0058] In order to reduce the vibration during the transmission of the walking mechanism 3, the walking mechanism 3 further includes a coupling 34, through which the parallel helical gear reducer 322 and the walking shaft 331 are connected. Specifically, two groups of couplings 34 are provided, and each group of couplings 34 includes a driving coupling 341 and a driven coupling 342, the driving coupling 341 is connected to the output end of the parallel helical gear reducer 322, and the driven coupling 342 is connected to the input end of the walking shaft 331. The first drive shaft 35 is connected to the walking shaft 331 through the driving coupling 341 and the driven coupling 342, so that the first drive shaft 35 and the walking shaft 331 rotate together and transmit torque, thereby reducing vibration during the transmission process and compensating for the offset between the first drive shaft 35 and the walking shaft 331.

[0059] Furthermore, the driven coupling 342 is connected to the travel shaft 331 through a deep groove ball bearing, which is press-fitted on the travel shaft 331, and the bearing retaining ring is located on the side of the deep groove ball bearing close to the travel wheel 332, and the small round nut is fastened to the travel shaft 331, located on the other side of the deep groove ball bearing, and the bearing cover is sleeved on the small round nut. The deep groove ball bearing connection has a small friction coefficient, a high limit speed, a variety of size ranges and forms, and can withstand radial loads and a certain amount of axial loads, thereby improving the stability of the rotation of the travel wheel 332.

[0060] like Figure 4 As shown, the steering mechanism 4 includes a driving component 41, a first reducer 42 and a steering component 43. The driving component 41 includes a first motor 411 and a hand wheel 412. The first motor 411 and the hand wheel 412 can respectively drive the first reducer 42 to realize electric control and manual control of the steering of the vehicle body 1, providing multiple protections for sudden failures.

[0061] Further, there are two first reducers 42, and there are two groups of steering assemblies 43. The two first reducers 42 correspond to the two groups of steering assemblies 43 one by one. Each group of steering assemblies 43 includes a steering longitudinal axis 431, a steering transverse axis 432, and a steering wheel group. The steering wheel group includes two steering wheels 433. The steering longitudinal axis 431 is connected to the first reducer 42. The steering transverse axis 432 is arranged at the bottom of the steering longitudinal axis 431 and is perpendicular to the steering longitudinal axis 431. The two steering wheels 433 are symmetrically arranged at both ends of the steering transverse axis 432. Further, the two first reducers 42 are connected through the second drive shaft 45. The first motor 411 drives one of the first reducers 42 to rotate, and drives the other first reducer 42 through the second drive shaft 45. The first reducer 42 drives the steering wheel 433 to rotate through the steering longitudinal axis 431 and the steering transverse axis 432, thereby realizing the steering of the vehicle body 1. When the first motor 411 fails, the first reducer 42 can be driven to rotate by turning the hand wheel 412 to realize the steering of the vehicle body 1.

[0062] Optionally, the steering longitudinal axis 431 and the steering transverse axis 432 are connected by hexagon socket screws, which have a large load capacity and are easy to install.

[0063] In this embodiment, the first reducer 42 is of model NRV075-100-28H8, with a total speed ratio of 500:1, a first-stage speed ratio of 5:1, a rated output speed of 2.9r / min, and an output-end load-bearing torque ≥250N·m. The speed controlled by the first motor 411 is relatively reduced, but the steering function of the vehicle body 1 can still be realized.

[0064] In order to facilitate the determination of the direction of rotation, the steering mechanism 4 also includes a direction feedback shaft 44, which is connected to the top of one of the steering longitudinal shafts 431. The direction feedback shaft 44 synchronously drives the potentiometer. According to the rotation of the direction feedback shaft 44, the potentiometer has a continuous voltage. The potentiometer feeds back the current signal to the controller, and sets the middle position of the potentiometer output current to zero degrees. At this time, the controller controls the vehicle body 1 to drive in a straight line. The value of the potentiometer output current less than the middle position is set to a negative angle. At this time, the controller controls the vehicle body 1 to turn left. The value of the potentiometer output current greater than the middle position is set to a positive angle. At this time, the controller controls the vehicle body 1 to turn right.

[0065] In order to buffer the vibration when the vehicle body 1 moves and turns, the fuel filling device also includes a shock absorbing mechanism 6, which is arranged on the vehicle body 1. The shock absorbing mechanism 6 is provided with two groups, and the two groups of shock absorbing mechanisms 6 are connected to the two groups of steering assemblies 43 in a one-to-one correspondence. Further, the shock absorbing mechanism 6 includes a support seat 61, a spring 63, and a spring plate 64. The support seat 61 is arranged on the vehicle body 1 and sleeved on the steering longitudinal axis 431. One end of the spring 63 is fixedly sleeved on the support seat 61, and the other end is arranged on the spring plate 64, and the spring plate 64 is arranged on the steering transverse axis 432. Specifically, the support seat 61 is connected to the vehicle body 1 by means of hexagon socket head screws, and the firmness of the connection is improved by means of elastic washers; a support sleeve 62 is provided between the support seat 61 and the steering longitudinal axis 431, the support seat 61 is sleeved on the steering longitudinal axis 431 through the support sleeve 62, the spring 63 is sleeved on the support seat 61, and the spring disk 64 is provided on the steering longitudinal axis 431 through a thrust ball bearing. The shock absorbing mechanism 6 can buffer the vibration of the vehicle body 1 during movement and steering, thereby reducing the shaking and overflow of the fuel in the tank body 2.

[0066] In this embodiment, the transmission mechanism 5 includes a hose reel 51, and the hose reel 51 includes a first hose reel 511 and a second hose reel 512. The first hose reel 511 and the second hose reel 512 are both provided with a metal hose, and the metal hose is connected to the tank body 2. Fuel is injected into the tank body 2 through the metal hose, and the fuel in the tank body 2 is filled into the oil-consuming equipment. The operation is convenient, and the fuel filling over a long distance can be achieved.

[0067] In order to ensure the cleanliness of the fuel, the pipeline of the transmission structure 5 should be pickled and passivated before filling the fuel into the oil-consuming equipment to remove the oxide scale and rust inside the pipeline.

[0068] like Figure 5As shown, in order to know the storage amount of fuel in the tank body 2 in real time, the fuel filling device also includes a liquid level gauge 7, which is arranged on the tank body 2. The liquid level gauge 7 can observe the liquid level of the fuel in the tank body 2 in real time. In this embodiment, the liquid level gauge 7 is a magnetic flap liquid level gauge 7, which realizes real-time measurement of the liquid level based on the buoyancy principle and the magnetic coupling principle. When the liquid level in the measured container rises and falls, the magnetic float in the float also rises and falls accordingly. The permanent magnet in the float drives the magnetic flap outside the float to flip 180° through magnetic coupling. The two sides of the flap are painted with different colors (usually red and white) to indicate the position of the liquid level. Specifically, when the liquid level in the tank body 2 rises, the flap changes from white to red, and when the liquid level in the tank body 2 drops, the flap changes from red to white. The red and white junction of the indicator is the actual height of the liquid level in the tank body 2, thereby achieving accurate measurement of the liquid level. The magnetic flap level gauge 7 mainly relies on a mechanical device to monitor the liquid level in the tank body 2, and can achieve real-time measurement of the liquid level, so as to facilitate timely replenishment of the fuel in the tank body 2.

[0069] The fuel filling device also includes a filter 8, which is arranged on the connecting pipeline between the tank body 2 and the oil-using equipment, and can filter the fuel filled into the oil-using equipment from the tank body 2. Specifically, the transmission mechanism 5 also includes an oil pump 52, which is arranged on the connecting pipeline between the tank body 2 and the oil-using equipment. The filter 8 includes a coarse filter 81 and a fine filter 82. The coarse filter 81 is arranged on the connecting pipeline between the tank body 2 and the oil pump 52, and two coarse filters 81 are arranged, which can improve the transmission efficiency. The fine filter 82 is arranged on the connecting pipeline between the oil pump 52 and the oil-using equipment, and the filtering effect of the fuel filling device is further improved through two filtrations.

[0070] In order to detect the flow rate of the fuel flowing into the fuel consuming equipment, the fuel filling device further comprises a flow meter 9, which is arranged on the connecting pipeline between the tank body 2 and the fuel consuming equipment.

[0071] like Figure 3 As shown, the fuel filling device also includes a battery 10, which is embedded in the vehicle body 1 and can provide power for the fuel filling device. In this embodiment, the battery 10 is a lithium iron phosphate battery 7372V14kwh, which can ensure a certain endurance of the vehicle body 1.

[0072] refer to Figure 6 , the fuel transmission process in this embodiment is described in detail:

[0073] First, the fuel filling device and the fuel storage point are connected through a quick connector, and the fuel is introduced into the tank body 2 through the metal hose on the first hose reel 511. At the same time, the liquid level meter 7 observes the liquid level of the fuel in the tank body 2; the oil pump 52 is turned on, and the first isolation valve 53 and the second isolation valve 54 are opened at the same time. The fuel is transmitted to the coarse filter 81 through two pipelines, and the pressure change in the internal system is monitored by a pressure gauge. The filtered fuel is transmitted from the input end to the output end of the oil pump 52, and the flow rate of the output fuel is detected by the flow meter 9. The pressure of the coarsely filtered fuel is monitored again, and then the fuel is transmitted to the fine filter 82, accompanied by synchronous pressure monitoring. All monitoring pipeline points are within the normal threshold, and the third isolation valve 55 is opened. The fuel is transmitted to the quick connector through the metal hose on the second hose reel 512, so that the fuel in the tank body 2 is filled into the oil-using equipment.

[0074] Furthermore, a drain valve 21 is provided at the bottom of the tank body 2. When the fuel inside the tank body 2 does not meet the regulations or has a high level of impurities, the drain valve 21 can be opened to drain and clean the fuel.

[0075] A breathing valve 22 is provided on the top of the tank body 2. The breathing valve 22 is a valve that not only ensures that the space of the tank body 2 is isolated from the atmosphere within a certain pressure range, but also communicates with the atmosphere (breathing) when the pressure exceeds or falls below this pressure range. The breathing valve 22 can not only reduce the gas emission in the tank and reduce the pollution to the atmosphere, but also prevent the tank body 2 from being damaged by overpressure or instability due to ultra-vacuum, which plays a certain role in promoting safety and environmental protection.

[0076] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A fuel filling device, characterized in that: include: Vehicle body (1); A tank body (2) is arranged on the vehicle body (1), and the tank body (2) is used to store fuel; A walking mechanism (3) is arranged at the rear end of the vehicle body (1), and the walking mechanism (3) is used to support the vehicle body (1) and can drive the vehicle body (1) to move; A steering mechanism (4), the steering mechanism (4) being arranged at the front end of the vehicle body (1) and used for supporting the vehicle body (1), the steering mechanism (4) comprising a driving assembly (41), a first reducer (42) and a steering assembly (43), the driving assembly (41) being capable of driving the steering assembly (43) to move via the first reducer (42) to achieve steering of the vehicle body (1); The driving assembly (41) comprises a first motor (411) and a hand wheel (412), and the first motor (411) and the hand wheel (412) are capable of driving the first reducer (42) respectively; A transmission mechanism (5) is arranged on the vehicle body (1), and is used to inject fuel into the tank body (2), and to add the fuel in the tank body (2) to the oil-using equipment.

2. The fuel filling device according to claim 1, characterized in that: The first reducers (42) are provided with two, the steering assemblies (43) are provided with two groups, the two first reducers (42) correspond to the two groups of the steering assemblies (43) one by one, and each group of the steering assemblies (43) comprises: A steering longitudinal shaft (431), wherein the steering longitudinal shaft (431) is connected to the first reducer (42); A steering transverse axis (432), wherein the steering transverse axis (432) is disposed at the bottom of the steering longitudinal axis (431) and is perpendicular to the steering longitudinal axis (431); The steering wheel set comprises two steering wheels (433), wherein the two steering wheels (433) are symmetrically arranged at two ends of the steering transverse axis (432).

3. The fuel filling device according to claim 2, characterized in that: The steering mechanism (4) further comprises a direction feedback shaft (44), wherein the direction feedback shaft (44) is connected to the top of one of the steering longitudinal shafts (431), and the direction feedback shaft (44) is used to feedback the steering angle of the steering longitudinal shaft (431).

4. The fuel filling device according to claim 2, characterized in that: The fuel filling device also includes a shock absorbing mechanism (6), which is arranged on the vehicle body (1). Two groups of the shock absorbing mechanism (6) are provided and are connected to the two groups of steering assemblies (43) in a one-to-one correspondence.

5. The fuel filling device according to claim 4, characterized in that: The shock absorbing mechanism (6) comprises a support seat (61), a spring (63), and a spring disk (64); the support seat (61) is arranged on the vehicle body (1) and sleeved on the steering longitudinal axis (431); one end of the spring (63) is fixedly sleeved on the support seat (61), and the other end is arranged on the spring disk (64); and the spring disk (64) is arranged on the steering transverse axis (432).

6. The fuel filling device according to claim 1, characterized in that: The walking mechanism (3) comprises: A second motor (31); A second reducer (32), the second reducer (32) comprising a stepless reducer (321) and a parallel shaft helical gear reducer (322), the parallel shaft helical gear reducer (322) being connected to an output end of the stepless reducer (321), and the second motor (31) being used to drive the stepless reducer (321); The walking assembly (33) comprises a walking shaft (331) and a walking wheel (332), wherein the walking wheel (332) is sleeved on the walking shaft (331), two walking shafts (331) are provided, and the walking wheels (332) are provided in a one-to-one correspondence with the walking shafts (331), and the two walking shafts (331) are respectively connected to two ends of the parallel shaft helical gear reducer (322), and the parallel shaft helical gear reducer (322) drives the walking shaft (331) to rotate, so as to realize the rotation of the walking wheel (332).

7. The fuel filling device according to claim 6, characterized in that: The traveling mechanism (3) further comprises a coupling (34), wherein the coupling (34) is used to connect the parallel-axis helical gear reducer (322) and the traveling shaft (331).

8. The fuel filling device according to any one of claims 1 to 7, characterized in that: The fuel filling device also includes a liquid level meter (7), which is arranged on the tank body (2) and is used to measure the liquid level of the fuel in the tank body (2).

9. The fuel filling device according to any one of claims 1 to 7, characterized in that: The fuel filling device further comprises a filter (8), wherein the filter (8) is arranged on a connecting pipeline between the tank body (2) and the oil-consuming equipment, and the filter (8) is used to filter the fuel filled from the tank body (2) to the oil-consuming equipment.

10. The fuel filling device according to any one of claims 1 to 7, characterized in that: The fuel filling device further comprises a flow meter (9), which is arranged on a connecting pipeline between the tank body (2) and the fuel consuming equipment, and is used to detect the flow rate of the fuel flowing into the fuel consuming equipment.

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