CN217150016U - Damping system capable of being used for automatic leveling of sweeping disc and middle suction port - Google Patents

Abstract

The utility model provides a can be used to sweep dish and put suction inlet automatic leveling's shock mitigation system in. The frame is provided with a power system; the middle sucking disc system is provided with a first driving part and a middle suction port, the output end of the first driving part is connected with the middle suction port, the first driving part can drive the middle suction port to move along the vertical direction, and the power system is used for supplying oil to an oil cylinder of the first driving part; the sweeping disc cleaning system comprises a second driving part and a sweeping disc, the second driving part is connected with the frame, the output end of the second driving part is connected with the sweeping disc, the second driving part can drive the sweeping disc to do circular motion, and the power system is used for supplying oil to an oil cylinder of the second driving part; the sweeping disc power-assisted lifting system comprises a third driving part, the third driving part is connected with the frame, the output end of the third driving part is connected with the sweeping disc, the third driving part can drive the sweeping disc to move downwards along the 45-degree direction, and the power system is used for supplying oil to an oil cylinder of the third driving part. By adopting the technical scheme, the pavement cleanliness rate is effectively improved.

Description

Damping system capable of being used for automatic leveling of sweeping disc and middle suction port

Technical Field

The utility model relates to a vehicle technical field particularly, relates to a damping system who can be used to sweep dish and put suction inlet automatic leveling in.

Background

Along with the development of the social and economic level of China, people pay more and more attention to living environments of residents, the requirement for cleaning roads is higher and higher, and the objective requirements for relevant treatment of road cleaning and special equipment for special road cleaning are increased. With the development of social economy and the trend of people to good environments, special vehicles, especially special vehicles for road washing and sweeping, are rapidly developed. The hydraulic system is a key technology for development of road washing and sweeping special vehicles. In the process of cleaning the road washing and sweeping special vehicle, the reliability of a series of actions such as coordination of the sweeping disc and the sucking disc needs to be ensured, when a pothole appears on the road surface, the pothole surface can impact the sucking disc connecting component, the riding comfort is reduced, the structural frame component can be damaged, and the safety of a series of actions such as coordination of the sweeping disc and the sucking disc cannot be guaranteed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a can be used to sweep set and put suction inlet automatic leveling's shock mitigation system in to when the hole appears in the road surface among the solution prior art, the hole face can lead to the fact the problem of impact to the dish structural component.

In order to achieve the above object, according to an aspect of the present invention, there is provided a vehicle including: the frame is provided with a power system; the middle sucker system is provided with a first driving part and a middle suction port, the first driving part is connected with the frame, the output end of the first driving part is connected with the middle suction port, the first driving part can drive the middle suction port to move along the vertical direction, and the power system is used for supplying oil to an oil cylinder of the first driving part; the sweeping disc cleaning system comprises a second driving part and a sweeping disc, the second driving part is connected with the frame, the output end of the second driving part is connected with the sweeping disc, the second driving part can drive the sweeping disc to do circular motion, and the power system is used for supplying oil to an oil cylinder of the second driving part; the sweeping disc power-assisted lifting system comprises a third driving part, the third driving part is connected with the frame, the output end of the third driving part is connected with the sweeping disc, the third driving part can drive the sweeping disc to move downwards at an angle of 45 degrees, and the power system is used for supplying oil to an oil cylinder of the third driving part.

Further, the power system includes: an oil tank; the inlet end of the main oil pump is communicated with the oil tank, and the outlet end of the main oil pump is selectively communicated with the first driving part, the second driving part and the third driving part through a first four-way reversing valve.

Furthermore, the oil cylinder of the first driving part is communicated with an oil tank, a first regulating valve, a first one-way valve and a first stabilizing valve are arranged on a pipeline for communicating the oil tank with the first driving part, the first regulating valve and the first one-way valve are arranged in series, and the first stabilizing valve, the first regulating valve and the first one-way valve are arranged in parallel; wherein, the preset pressure value of the first stable valve is P1, the magnitude of the external resistance on one side of the middle suction port is P2 before or during the operation of the vehicle, the right position action of the first four-way reversing valve is realized, the middle suction port moves downwards, and the middle suction port is stuck with obstacles during the putting down action, when P2 is more than P1, the middle suction port cannot be put in place when encountering obstacles, at the moment, the pressure of the vehicle system is pressed according to the value P1, oil is returned by unloading through the first stable valve, during the cleaning operation of the vehicle, when P2 is more than P1, the suction port is dead-weight and falls to the ground, when meeting the objects to be cleaned and making the suction port not pass through, the pressure of the vehicle system is increased to the set value of P1, the oil in the oil cylinder large cavity of the first driving part flows into the oil tank through the first stable valve, if impact rebound exists in the middle, the oil is supplied to the oil cylinder small cavity of the first driving part through the first one-way valve during the rebound process, and after the physical obstacle is cleared, the middle suction port is continuously lowered until the middle suction port is placed at a preset position, wherein the first regulating valve is used for stabilizing a certain amount of hydraulic pressure to control the oil throughput in the rebound of the middle suction port to reach the oil supplementing speed of the oil cylinder for controlling the first driving part.

Further, the second driving portion comprises a first motor and a second motor, the sweeping disc comprises a first sweeping disc and a second sweeping disc, the first motor can drive the first sweeping disc to do circular motion, the second motor can drive the second sweeping disc to do circular motion, the first motor is communicated with the main oil pump through a first sweeping disc reversing valve, and oil paths of the first motor and the second motor are arranged in series.

Furthermore, a second one-way valve and a third one-way valve are arranged on a pipeline communicated between the first motor and the first scanning disc reversing valve, the flow directions of the second one-way valve and the third one-way valve are opposite, and the second motor is communicated with an oil way communicated with the first motor and the first scanning disc reversing valve through a series oil way; the first end of the series oil circuit is located between the second one-way valve and the third one-way valve, the second end of the series oil circuit is communicated with the second motor through the second sweeping disc reversing valve, the first sweeping disc reversing valve acts on the left, the first motor acts alone, the first sweeping disc reversing valve acts on the right, oil passes through the third one-way valve, the second sweeping disc reversing valve acts on the right, the second motor acts alone, the first sweeping disc reversing valve acts on the left, and when the second sweeping disc reversing valve acts on the right, the first motor and the second motor are connected in series and act synchronously.

Furthermore, the sweeping disc power-assisted lifting system further comprises power-assisted lifting stabilizing valve assemblies, each third driving portion is provided with two power-assisted lifting stabilizing valve assemblies, one of the power-assisted lifting stabilizing valve assemblies is communicated with a large oil cylinder cavity of the third driving portion, the other power-assisted lifting stabilizing valve assembly is communicated with a small oil cylinder cavity of the third driving portion, and each power-assisted lifting stabilizing valve assembly is communicated with a pressure oil port of the main oil pump through a lifting reversing valve.

Furthermore, the number of the third driving parts is two, the third driving parts are arranged in parallel, the two third driving parts realize series-parallel connection action through the two lifting reversing valves, and each third driving part is provided with two power-assisted lifting stabilizing valve assemblies.

Further, the power-assisted lifting stabilizing valve assembly comprises a fifth regulating valve, a fifth one-way valve and a fifth stabilizing valve, wherein the fifth regulating valve, the fifth one-way valve and the fifth stabilizing valve are arranged on a pipeline between the oil tank and the lifting reversing valve, the fifth one-way valve and the fifth regulating valve are arranged in series, and the fifth stabilizing valve, the fifth one-way valve and the fifth regulating valve are arranged in parallel; the preset pressure value of the fifth stabilizing valve is P3, the sweeping disc suddenly receives external force in the operation process of the vehicle and is P4, when P4 is larger than P3, an oil cylinder of the third driving part retracts due to the fact that the external force overcomes P3, oil of the oil cylinder flows into an oil tank through the fifth stabilizing valve, and oil is supplied to a small cavity of the third driving part through the fifth one-way valve in a small oil cylinder cavity of the third driving part, so that the axial height of the sweeping disc is adjusted in a self-adaptive mode.

Furthermore, the damping system further comprises an overflow valve assembly, the overflow valve assembly is connected with a port B of the first four-way reversing valve, the overflow valve assembly comprises a second regulating valve, a fourth one-way valve and a second stabilizing valve, a pipeline between the oil tank and the first four-way reversing valve is provided with the second regulating valve, the fourth one-way valve and the second stabilizing valve, the fourth one-way valve is arranged in series with the second regulating valve, and the second stabilizing valve is arranged in parallel with the fourth one-way valve and the second regulating valve.

Furthermore, the preset pressure value of the second stabilizing valve is P4, the middle suction port is put in place, the whole vehicle cleaning starts to operate, the first four-way reversing valve recovers the middle position, the middle suction port is subjected to external force in the operating process of the vehicle and is P5, when P5 is greater than P4, the middle suction port has a rising trend due to impact, the oil liquid in the large cavity of the oil cylinder of the first driving part flows into the oil tank through the second regulating valve, the oil is supplied to the small cavity of the first driving part through the fourth one-way valve, passive operation obstacle avoidance is completed, and the axial height of the middle suction port is adjusted in a self-adaptive mode.

Furthermore, the number of the middle sucking disc systems is two, the two middle sucking disc systems are arranged in parallel and are respectively arranged on two sides of the frame, and the oil cylinder of the first driving part of each middle sucking disc system is communicated with the main oil pump through a first four-way reversing valve;

when the vehicle is in an operation process, when the two middle suction cup systems are simultaneously subjected to the force of an obstacle, namely P6, the two middle suction cup systems are simultaneously held back, and when P6 is more than P4, oil in the large oil cylinder cavities of the two first driving parts flows into the oil tank through the second stabilizing valve, so that the axial height of the middle suction port is adjusted in a self-adaptive mode.

Use the technical scheme of the utility model, through first drive division, the second drive division, third drive division and connected to the frame, the output of first drive division is connected with put the suction inlet in, the second drive division, the output of third drive division with sweep the dish and be connected, through driving system to first drive division, the second drive division, fuel feeding in the hydro-cylinder of third drive division, put the connection of suction inlet and frame in and change into the hydro-cylinder by traditional rigid connection and be connected, can play absorbing effect, thereby effectively absorb the impact that road surface hole hollow produced to putting the suction inlet, can protect in putting the frame that the suction inlet can protect again and put the suction inlet and be connected, and sucking disc system, sweep a set clean system, sweep a set helping hand operating system by the driving system fuel feeding, compact structure between each system, the cost is lower. By adopting the technical scheme, the cooperation of the sweeping disc and the middle suction port is more coordinated, so that the road surface cleaning rate is effectively improved, and the safety of the sweeping operation of the sweeping disc and the middle suction port is effectively improved.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural view of a first embodiment of a vehicle according to the invention;

fig. 2 shows a schematic structural view of a second embodiment of a vehicle according to the invention;

fig. 3 shows a schematic structural diagram of an embodiment of an oil circuit system of a vehicle according to the present invention.

Wherein the figures include the following reference numerals:

10. a frame;

20. a power system; 21. an oil tank; 22. a main oil pump; 23. a first four-way reversing valve; 24. an oil absorption filter element; 25. a system main overflow valve; 26. a hydraulic oil tank;

30. a centrally-mounted sucker system; 31. a first driving section; 32. a suction port is arranged in the middle; 34. a first regulating valve; 35. a first check valve; 36. a first stabilizing valve;

40. a sweeping disc cleaning system; 41. a second driving section; 411. a first motor; 412. a second motor; 42. sweeping the disc; 421. a first sweeping disk; 422. a second sweeping disk; 43. a first puck reversing valve; 44. a second one-way valve; 45. a third check valve; 46. a series oil circuit; 47. a second sweeping disk reversing valve;

50. a pan sweeping power-assisted lifting system; 51. a third driving section; 52. a lift diverter valve;

60. an overflow valve assembly; 62. a second regulating valve; 63. a fourth check valve; 64. a second stabilizing valve;

70. a power-assisted lifting stabilizing valve assembly; 71. a fifth regulating valve; 72. a fifth check valve; 73. and a fifth stabilizing valve.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It is noted that the terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those described or illustrated herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Referring to fig. 1 to 3, according to an embodiment of the present application, a damping system for automatically leveling a sweeping disk and a middle suction port is provided.

Specifically, the vehicle includes: the frame 10 is provided with a power system 20, the middle suction cup system 30 is provided with a first driving part 31 and a middle suction opening 32, the first driving part 31 is connected with the frame 10, the output end of the first driving part 31 is connected with the middle suction opening 32, the first driving part 31 can drive the middle suction opening 32 to move along the vertical direction, the power system 20 is used for supplying oil to the oil cylinder of the first driving part 31, the sweeping disc cleaning system 40 comprises a second driving part 41 and a sweeping disc 42, the second driving part 41 is connected with the frame 10, the output end of the second driving part 41 is connected with the sweeping disc 42, the second driving part 41 can drive the sweeping disc 42 to do circular motion, the power system 20 is used for supplying oil to the oil cylinder of the second driving part 41, the sweeping disc power-assisted lifting system 50 comprises a third driving part 51, and the third driving part 51 is connected with the frame 10, the output end of the third driving part 51 is connected with the sweeping disk 42, the third driving part 51 can drive the sweeping disk 42 to move downwards along 45 degrees, and the power system 20 is used for supplying oil to the oil cylinder of the third driving part 51.

By applying the technical scheme of the embodiment, the first driving part 31, the second driving part 41 and the third driving part 51 are connected with the frame 10, the output end of the first driving part 31 is connected with the middle suction port 32, the output ends of the second driving part 41 and the third driving part 51 are connected with the sweeping disc 42, oil is supplied to the oil cylinders of the first driving part 31, the second driving part 41 and the third driving part 51 through the power system 20, the connection between the middle suction port 32 and the frame 10 is changed from the traditional rigid connection into the oil cylinder connection (similar to an oil-gas spring), so that the shock absorption effect can be achieved, the impact generated by a road surface depression on the middle suction port 32 can be effectively absorbed, the suction port 32 can be protected, the frame 10 connected with the middle suction port 32 can be protected, the middle suction disc system 30, the sweeping disc cleaning system 40 and the sweeping disc power-assisted lifting system 50 are supplied with oil by the power system 20, the structures of the systems are compact, The cost is lower. By adopting the technical scheme, the sweeping disc 42 is more coordinated with the middle suction port 32, so that the road surface cleaning rate and the safety of the sweeping operation of the sweeping disc 42 and the middle suction port 32 are effectively improved.

As shown in fig. 3, the power system 20 includes an oil tank 21, a main oil pump 22, an inlet end of the main oil pump 22 is communicated with the oil tank 21, and an outlet end of the main oil pump 22 is selectively provided in communication with the first driving portion 31, the second driving portion 41, and the third driving portion 51 through a first four-way selector valve 23. The arrangement makes the structure among the power system 20, the middle suction cup system 30, the sweeping disc cleaning system 40 and the sweeping disc power-assisted lifting system 50 simple and compact, the oil supply object of the main oil pump 22 can be quickly switched through the first four-way reversing valve 23, the oil supply of the main oil pump 22 to the first driving part 31, the second driving part 41 and the third driving part 51 is realized, and the reliability of the power system 20 is improved.

The cylinder of the first drive unit 31 is provided in communication with the oil tank 21, a first regulator valve 34, a first check valve 35, and a first stabilizer valve 36 are provided on a pipeline through which the oil tank 21 communicates with the first drive unit 31, the first regulator valve 34 is provided in series with the first check valve 35, and the first stabilizer valve 36 is provided in parallel with the first regulator valve 34 and the first check valve 35. Because the oil cylinder has the characteristics of quick action and large pressure transmission, when the action of putting down the middle suction port 32 is executed, the first stabilizing valve 36 can limit the pressure of the middle suction cup system 30, and the pressure is modulated by a certain value, for example, 0.5MPa, when the oil cylinder is put to a position, if the ground has a slope, one corner of the ground is touched firstly, and the pressure transmitted to the oil cylinder exceeds 0.5MPa, the hydraulic system can unload, so that the oil cylinder is protected, the vehicle frame 10 is further protected, and the process of folding up the oil cylinder is also realized. When the middle suction port 32 is put in place, when a road is swept, if a large pit is formed in the road surface, the oil cylinder of the first driving part 31 retracts due to hard contact, and therefore the related system is protected. When the large and small chambers of the cylinder of the first driving part 31 are retracted, the chamber of the cylinder of the first driving part 31 can be replenished with oil through the first regulating valve 34 and the first check valve 35.

As shown in fig. 3, the shock absorbing system in the present embodiment further includes a relief valve assembly 60, and the relief valve assembly 60 communicates with the main oil pump 22 through the first four-way selector valve 23. The number of the central suction cup systems 30 is two, and the two central suction cup systems 30 are arranged in parallel, and the oil cylinder of the first driving part 31 of each central suction cup system 30 is communicated with the main oil pump 22 through the first four-way reversing valve 23. And the two middle suction cup systems 30 are respectively arranged at the left and right sides of the vehicle frame 10, and the oil cylinder of the first driving part 31 of each middle suction cup system 30 is communicated with the main oil pump 22 through the first four-way reversing valve 23. The left centrally located suction cup system 30 is used to achieve adaptive adjustment as follows: the preset pressure value of the first stabilizing valve 36 is P1, and P1 may be set as: p1 is more than or equal to 0.8MPa and less than or equal to 1.5MPa (pressure is set according to the size of the first driving part oil cylinder and the weight of the driving middle suction port), before or during operation of the vehicle, the magnitude of external resistance on one side of the middle suction port 32 is P2, the first four-way reversing valve 23 acts rightwards, the middle suction port 32 moves downwards, and in the process of putting down the middle suction port 32, if obstacles are stuck, when P2 is more than P1, when the obstacles are encountered, the middle suction port 32 cannot be put in place, at the moment, the vehicle system pressure is unloaded and returned through the first stabilizing valve 36 according to a P1 value, when the vehicle is cleaned, when P2 is more than P1, the middle suction port 32 falls to the ground due to self weight, when the objects to be cleaned cause the middle suction port 32 to not pass through, the middle suction port can jack the oil cylinder to enable the hydraulic system pressure to rise to a set value of P1, the oil in the large oil cylinder cavity of the first driving part 31 flows into the oil tank 21 through the first stabilizing valve 36, if the middle suction port 32 rebounds due to impact, oil is supplied to the small oil cylinder cavity of the first driving portion 31 through the first check valve 35 in the rebounding process, so that the hydraulic system and the oil cylinder can be guaranteed best, after physical obstacles are cleared, the middle suction port 32 moves leftwards through the first four-way reversing valve 23, the middle suction port is continuously lowered until the middle suction port is placed to a preset position, the middle suction port has an anti-collision function before placing operation in the process, and the first regulating valve 34 is used for stabilizing a certain amount of hydraulic pressure to control oil throughput in rebounding of the middle suction port 32 to control the oil cylinder oil-replenishing speed of the first driving portion 31. The self-adaptive adjustment of the central suction cup system 30 on the right side is the same as the self-adaptive adjustment of the central suction cup system 30 on the left side, and when the central suction cup systems 30 on the left side and the right side are blocked by an obstacle, the self-adaptive adjustment is realized through the overflow valve assembly 60.

The second driving part 41 includes a first motor 411 and a second motor 412, the sweeping disk 42 includes a first sweeping disk 421 and a second sweeping disk 422, the first motor 411 can drive the first sweeping disk 421 to make a circular motion, the second motor 412 can drive the second sweeping disk 422 to make a circular motion, the first motor 411 is communicated with the main oil pump 22 through a first sweeping disk reversing valve 43, and oil passages of the first motor 411 and the second motor 412 are arranged in series. The arrangement can realize the simultaneous action of the first scanning disc 421 and the second scanning disc 422, and can ensure the absolute consistency of the rotating speeds of the first scanning disc 421 and the second scanning disc 422. A second check valve 44 and a third check valve 45 are provided on a pipe line communicating between the first motor 411 and the first pan switching valve 43, the second check valve 44 and the third check valve 45 are provided in opposite flow directions, and the second motor 412 is communicated with an oil line communicating between the first motor 411 and the first pan switching valve 43 through a series oil line 46. When the first sweeping disk reversing valve 43 acts leftwards, the first motor 411 acts independently, the first sweeping disk reversing valve 43 acts rightwards, oil passes through the third one-way valve 45, the second sweeping disk reversing valve 47 acts rightwards, the second motor 412 acts independently, the first sweeping disk reversing valve 43 acts leftwards, and the second sweeping disk reversing valve 47 acts rightwards, the first motor 411 and the second motor 412 act in series and synchronously. The arrangement can realize the switching of single left cleaning operation, single right cleaning operation and left and right common operation.

Further, the power-assisted lift stabilizing valve assembly 70 includes a fifth regulating valve 71, a fifth check valve 72 and a fifth stabilizing valve 73, the fifth regulating valve 71, the fifth check valve 72 and the fifth stabilizing valve 73 being disposed on a line between the oil tank 21 and the lift switching valve 52, wherein the fifth check valve 72 is disposed in series with the fifth regulating valve 71, and the fifth stabilizing valve 73 is disposed in parallel with the fifth check valve 72 and the fifth regulating valve 71. The preset pressure value of the fifth stabilizing valve 73 is P3, the pressure value of the fifth stabilizing valve 73 is not less than 0.5MPa and not more than P3 and not more than 1.2MPa, the size of the sweeping disc 42 suddenly subjected to external force (determined according to the cleaned road pollutants, such as leaves, the pressure is small, and the sludge pressure is large) is P4 in the operation process of the vehicle, when P4 is more than P3, the oil cylinder of the third driving part 51 retracts due to the fact that the external force overcomes P3, oil liquid of the oil cylinder flows into the oil tank 21 through the fifth stabilizing valve 73, and oil is supplied to the small cavity of the third driving part 51 through the fifth one-way valve 72, so that the axial height of the sweeping disc 42 is adjusted in a self-adaptive mode.

In the present embodiment, there are two center suction cup systems 30, and the two center suction cup systems 30 are arranged in parallel. The oil cylinder of the first drive portion 31 of each of the centrally disposed suction cup systems 30 is provided in communication with the main oil pump 22 through the first four-way selector valve 23. The two middle suction cup systems 30 are respectively arranged at two sides of the frame 10, and the oil cylinder of the first driving part 31 of each middle suction cup system 30 is communicated with the main oil pump 22 through a first four-way reversing valve 23; in the operation process of the vehicle, when the force of the obstacle on the two middle suction cup systems 30 is P6, the two middle suction cup systems 30 are held back at the same time, and when P6 is greater than P4, oil in the large oil cylinder cavities of the two first driving parts 31 flows into the oil tank 21 through the second stabilizing valve 64, so that the axial height of the middle suction port 32 is adjusted in a self-adaptive manner.

A first end of the series oil passage 46 is located between the second check valve 44 and the third check valve 45, and a second end of the series oil passage 46 communicates with the second motor 412 through the second pan switching valve 47. When the action of the built-in sucker system 30 is completed, high-pressure oil enters the sweeping disc cleaning system 40, and the left position of the first sweeping disc reversing valve 43 acts, the first motor 411 rotates to act, the high-pressure oil flows into the second one-way valve 44, at this time, if the right position of the second sweeping disc reversing valve 47 is electrified, the second sweeping disc 422 acts, and under the action of the series oil circuit 46, the synchronous rotating speed of the first sweeping disc 421 and the second sweeping disc 422 can be further ensured. During the synchronous rotation of the first scanning plate 421 and the second scanning plate 422, the first scanning plate reversing valve 43 can be blocked by the second check valve 44, and at this time, if the second scanning plate reversing valve 47 is not operated, the independent cleaning operation of the first scanning plate 421 is realized. If the first sweeping disc reversing valve 43 is powered on at the right position, high-pressure oil passes through the third one-way valve 45, under the state that the third one-way valve 45 conducts one-way flow, oil fluid can only enter the second sweeping disc reversing valve 47, if the second sweeping disc reversing valve 47 does not act, the high-pressure oil is unloaded, if the second motor 412 acts, the second sweeping disc reversing valve 47 must act at the right position, and when the second motor 412 acts, the high-pressure oil can directly flow back to the oil tank. This arrangement further improves the reliability of the sweeping shoe cleaning system 40 and improves the safety of the vehicle in performing road surface cleaning work.

The tray sweeping power-assisted lifting system 50 further comprises lifting stabilizing valve assemblies, each third driving part 51 is provided with two power-assisted lifting stabilizing valve assemblies 70, one of the power-assisted lifting stabilizing valve assemblies 70 is communicated with a large oil cylinder cavity of the third driving part 51, the other lifting stabilizing valve assembly is communicated with a small oil cylinder cavity of the third driving part 51, and each power-assisted lifting stabilizing valve assembly 70 is communicated with the main oil pump 22 through a pressure oil port of a lifting reversing valve 52. Specifically, a power lift stabilizing valve assembly 70 is comprised of a fifth regulator valve 71, a fifth check valve 72 and a fifth stabilizing valve 73, which are disposed in series with the regulator valve and the check valve, and in parallel with the check valve and the regulator valve (i.e., the power lift stabilizing valve assembly 70 is configured identically to the relief valve assembly 60). When the cylinder large cavity of the third driving part 51 pushes the sweeping disc to be grounded, if the pressure is higher, the grounding pressure of the sweeping disc 42 contacting the ground is heavier (suitable for a dirty road surface), a power-assisted lifting stabilizing valve assembly 70 is connected to the cylinder large cavity of the third driving part 51, the maximum grounding pressure is adjusted through a stabilizing valve on the power-assisted lifting stabilizing valve assembly 70, and when the cylinder pressure exceeds the set pressure of the stabilizing valve (for example, exceeds 1MPa), the main working oil is unloaded through the stabilizing valve. When a large stone block is encountered to drag the sweeping disc 42 in the running process of the vehicle, the power-assisted lifting stabilizing valve assembly 70 can supplement oil to the large cavity of the oil cylinder of the third driving part 51 through the one-way valve, and the oil supplementing speed is determined through the regulating valve (adjustable according to actual requirements).

The number of the third driving units 51 is plural, each of the third driving units 51 is provided in parallel, and each of the third driving units 51 is provided with two booster lift stabilizing valve assemblies 70. In this embodiment, there are two third driving portions 51, two third driving portions 51 are respectively disposed in communication with the first scanning plate 421 and the second scanning plate 422, and the two third driving portions 51 realize a series-parallel operation through two lift switching valves 52. This arrangement improves the reliability of the pan lift system 50. The sweeping disc 42 and the middle suction port 32 can be matched more coordinately through the sweeping disc power-assisted lifting system 50, so that the cleaning rate of the road surface is improved. Under different road surface slopes, the relationship between the sweeping disc 42 and the middle suction opening 32 can be automatically coordinated. Specifically, the air pressure and the oil pressure of the tray sweeping assistance lifting system 50 can be set. Alternatively, the angle of the sweep tray 42 may be adjusted by a controller.

The vehicle further comprises a spill valve assembly 60, wherein the spill valve assembly 60 is connected with the port B of the first four-way reversing valve 23 through the first four-way reversing valve 23, and the spill valve assembly 60 comprises a second regulating valve 62, a fourth one-way valve 63 and a second stabilizing valve 64. A second regulator valve 62, a fourth check valve 63 and a second stabilizer valve 64 are provided on a pipeline between the oil tank 21 and the first four-way selector valve 23, wherein the fourth check valve 63 is provided in series with the second regulator valve 62, and the second stabilizer valve 64 is provided in parallel with the fourth check valve 63 and the second regulator valve 62. The arrangement enables the overflow valve component 60 to work when the central suction cup system 30 is overloaded, the overflow valve component 60 can play a role in protecting the central suction cup system 30, and the safety of road surface cleaning operation of the vehicle is further improved. In this embodiment, the relief valve assembly 60 is disposed at an oil inlet of the oil cylinder of the first driving portion 31, and is disposed in parallel with a valve assembly composed of the first stabilizing valve 36, the first regulating valve 34, and the first check valve 35, and the retraction and lowering of the oil cylinder of the first driving portion 31 can be realized through the first four-way reversing valve 23.

Specifically, the preset pressure value of the second stabilizing valve 64 is P4, wherein the P4 determines a set value according to the size of the oil cylinder, the P4 is more than or equal to 0.8MPa and less than or equal to 1.5MPa, the middle suction port 32 is put in place, the whole vehicle cleaning starts to operate, the first four-way reversing valve 23 recovers to the middle position, the size of the external force applied to the middle suction port 32 is P5 during the operation of the vehicle, when P5 is more than P4, the middle suction port 32 has a rising trend due to impact, the oil in the large cavity of the oil cylinder of the first driving part 31 flows into the oil tank 21 through the second regulating valve 62, the oil is supplied to the small cavity of the first driving part 31 through the fourth one-way valve 63, passive operation obstacle avoidance is completed, and the axial height of the middle suction port 32 is self-adaptive regulated. In this embodiment, there are two central suction cup systems 30, the two central suction cup systems 30 are arranged in parallel, the two central suction cup systems 30 are respectively arranged on two sides of the vehicle frame 10, and the oil cylinder of the first driving portion 31 of each central suction cup system 30 is arranged to communicate with the main oil pump 22 through the first four-way reversing valve 23; in the operation process of the vehicle, when the force of the obstacle on the two middle suction cup systems 30 is P6, the two middle suction cup systems 30 are held back at the same time, and when P6 is greater than P4, oil in the large oil cylinder cavities of the two first driving parts 31 flows into the oil tank 21 through the second stabilizing valve 64, so that the axial height of the middle suction port 32 is adjusted in a self-adaptive manner. According to one embodiment of the present application, the power system 20 further includes a hydraulic oil tank 26, when the power system 20 is powered on, the main oil pump 22 starts to operate, low-pressure oil is sucked through the main oil pump 22, and enters the main oil pump 22 through the oil suction filter 24, the maximum working pressure is defined according to three systems, namely the central suction cup system 30, the sweep sweeping system 40 and the sweep assisting lifting system 50, and when any system exceeds the set pressure of the system, high-pressure oil flows back to the hydraulic oil tank 26 through the system main relief valve 25. The pressure of the system main relief valve 25 may be set according to the actual operating pressure or the oil pump operating pressure of the system main relief valve 25, and is used to protect each system and protect the system main relief valve 25. When high-pressure oil passing through the main overflow valve 25 of the system passes through the port P of the first four-way reversing valve 23, the left position of the first four-way reversing valve 23 acts at the moment, the middle suction port 32 is in a put-down state, and the high-pressure oil enters the large oil cylinder cavity of the first driving part 31. When the action of lowering the mid-suction port 32 is performed, the cylinder pressure of the first drive portion 31 cannot be restricted by the system main relief valve 25, and at this time, the cylinder pressure of the first drive portion 31 is restricted by the relief valve assembly 60. If the right position of the first four-way reversing valve 23 is electrified, the middle suction port 32 is in a lifting state.

When the system is jammed, for example, during sweeping, the sweeping disc 42 is jammed, which causes the first motor 411 and the second motor 412 to be held back, and at this time, the main overflow valve 25 of the system is opened, thereby protecting the system. The pressure setting of system main relief valve 25 is very important and cannot exceed the rated pressure of system main relief valve 25. The power system 20, the middle sucking disc system 30, the sweeping disc cleaning system 40 and the sweeping disc power-assisted lifting system 50 all adopt an M-shaped middle unloading design mode, and when three systems, namely the middle sucking disc system 30, the sweeping disc cleaning system 40 and the sweeping disc power-assisted lifting system 50, do not act, even if the power system follows up, the hydraulic system is in an unloading state. In other words, the actions of the three systems need to be independent from each other and have a sequential relationship, and the three systems act sequentially from left to right, have a certain self-error correction function and better accord with the operation habits of operators. The vehicle of this application is with low costs, and easy maintenance. In this embodiment, the relief pressure of the main relief valve 25 of the system may be set to 18MPa, when the first motor 411 and the second motor 412 are held back, the main relief valve 25 of the system is opened at this time, in the middle suction cup system 30, the relief pressure of the relief valve assembly 60 may be set to 1MPa, and when the first driving part 31 is overloaded, the relief valve assembly 60 is opened, so that the first driving part 31 may adjust the working state in time, and the problem of damage caused by hard contact of the middle suction port system component connected to the first driving part 31 is avoided. Similarly, in the tray sweeping assisted lift system 50, the relief pressure of the assisted lift stabilizer valve assembly 70 may be set to 1MPa or other pressure values.

According to another embodiment of the application, the power system 20, the centrally-mounted sucking disc system 30, the sweeping disc cleaning system 40 and the sweeping disc power-assisted lifting system 50 are designed, so that the assembly precision (the installation error of an oil cylinder is greatly smaller than the error of an adjusting pull rod) can be reduced, the adjusting and controlling mode and method are simpler and more convenient, and the operation can be completed in a cab. And the control of the grounding pressure of the sweeping disc and the adjustment of grounding can realize the electric control or hydraulic control adjustment of the cab. In addition, the centrally installed suction cup system 30 is connected to the vehicle frame 10 through the first driving unit 31, so that the back pressure of the cylinder of the first driving unit 31 can be adjusted, and the set pressure of the back pressure valve can be adjusted according to the centrally installed self weight in the design and development of the entire vehicle. The overflow valve component 60 and the first stabilizing valve are adopted to realize the control and the change of the volume of the large cavity and the small cavity of the oil cylinder, and realize the speed control and the instant reaction control (instant shock absorption in the pit falling process). Adopt the technical scheme of this application, put suction inlet 32 and can adapt to the road surface inclination automatically, if initiative slope, solved among the prior art and put suction inlet 32 and can only lean on the problem of pull rod manual regulation state.

In addition to the foregoing, it should be noted that reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally throughout this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (11)

1. A damping system capable of being used for automatically leveling a sweeping disc and a middle suction port is characterized by comprising:

the vehicle comprises a vehicle frame (10), wherein a power system (20) is arranged on the vehicle frame (10);

the central suction cup system (30) is provided with a first driving part (31) and a central suction port (32), the first driving part (31) is connected with the frame (10), the output end of the first driving part (31) is connected with the central suction port (32), the first driving part (31) can drive the central suction port (32) to move in the vertical direction, and the power system (20) is used for supplying oil to an oil cylinder of the first driving part (31);

the sweeping disc cleaning system (40) comprises a second driving part (41) and a sweeping disc (42), the second driving part (41) is connected with the frame (10), the output end of the second driving part (41) is connected with the sweeping disc (42), the second driving part (41) can drive the sweeping disc (42) to do circular motion, and the power system (20) is used for supplying oil to an oil cylinder of the second driving part (41);

sweep set helping hand operating system (50), sweep set helping hand operating system (50) including third drive division (51), third drive division (51) with frame (10) are connected, the output of third drive division (51) with sweep set (42) and be connected, third drive division (51) can drive sweep set (42) and move along 45 degrees below, driving system (20) are used for to the oil cylinder of third drive division (51) in the fuel feeding.

2. The shock absorbing system of claim 1, wherein the power system (20) comprises:

an oil tank (21);

the inlet end of the main oil pump (22) is communicated with the oil tank (21), and the outlet end of the main oil pump (22) is selectively communicated with the first driving part (31), the second driving part (41) and the third driving part (51) through a first four-way reversing valve (23).

3. The shock absorbing system according to claim 2, wherein a cylinder of the first driving portion (31) is provided in communication with the oil tank (21), a first regulating valve (34), a first check valve (35), and a first stabilizing valve (36) are provided on a pipeline of the oil tank (21) in communication with the first driving portion (31), the first regulating valve (34) and the first check valve (35) being provided in series, the first stabilizing valve (36) being provided in parallel with the first regulating valve (34), the first check valve (35);

wherein, the preset pressure value of the first stabilizing valve (36) is P1, the magnitude of external resistance on one side of the middle suction port (32) is P2 before or during operation of the vehicle, the right position action of the first four-way reversing valve (23) causes the middle suction port (32) to move downwards, and the middle suction port (32) is stuck if an obstacle exists during the putting down action, when P2 is more than P1, the middle suction port (32) cannot be put in place, at the moment, the vehicle system pressure is P1, oil is unloaded and returned through the first stabilizing valve (36), when P2 is more than P1, the vehicle is in a cleaning operation, the middle suction port (32) is in a ground due to self weight, when the middle suction port (32) cannot pass due to the object to be cleaned, the vehicle system pressure is raised to a set value P1, the oil in the large oil cavity of the first driving part (31) flows into the oil tank (21) through the first stabilizing valve (36), if the middle suction port (32) rebounds due to impact, oil is supplied to the small oil cylinder cavity of the first driving part (31) through the first check valve (35) in the rebounding process, after physical obstacles are cleared, the middle suction port (32) is continuously lowered until the middle suction port is placed at a preset position, and the first regulating valve (34) is used for stabilizing a certain amount of hydraulic pressure and controlling the oil passing amount in the rebounding process of the middle suction port (32) to control the oil replenishing speed of the oil cylinder of the first driving part (31).

4. The shock absorbing system according to claim 2, wherein the second driving portion (41) includes a first motor (411) and a second motor (412), the sweeping disk (42) includes a first sweeping disk (421) and a second sweeping disk (422), the first motor (411) drives the first sweeping disk (421) to make a circular motion, the second motor (412) drives the second sweeping disk (422) to make a circular motion, the first motor (411) is communicated with the main oil pump (22) through a first sweeping disk reversing valve (43), and oil passages of the first motor (411) and the second motor (412) are provided in series.

5. The shock absorbing system according to claim 4, wherein a second check valve (44) and a third check valve (45) are provided on a line communicating between the first motor (411) and the first swash plate reversing valve (43), the second check valve (44) and the third check valve (45) are arranged in a flow direction opposite to each other, and the second motor (412) is communicated with an oil line communicating between the first motor (411) and the first swash plate reversing valve (43) through a series oil line (46);

the first end of the series oil circuit (46) is located between the second one-way valve (44) and the third one-way valve (45), the second end of the series oil circuit (46) is communicated with the second motor (412) through a second sweeping disc reversing valve (47), the first sweeping disc reversing valve (43) acts in the left position, the first motor (411) acts alone, the first sweeping disc reversing valve (43) acts in the right position, oil passes through the third one-way valve (45), the second sweeping disc reversing valve (47) acts in the right position, the second motor (412) acts alone, the first sweeping disc reversing valve (43) acts in the left position, and when the second sweeping disc reversing valve (47) acts in the right position, the first motor (411) and the second motor (412) act in series and synchronously.

6. The shock absorption system of claim 2, wherein the sweeping disc power-assisted lifting system (50) further comprises power-assisted lifting and stabilizing valve assemblies (70), two power-assisted lifting and stabilizing valve assemblies (70) are arranged on each third driving portion (51), one power-assisted lifting and stabilizing valve assembly (70) is communicated with a large oil cylinder cavity of the third driving portion (51), the other power-assisted lifting and stabilizing valve assembly (70) is communicated with a small oil cylinder cavity of the third driving portion (51), and each power-assisted lifting and stabilizing valve assembly (70) is communicated with a pressure oil port of the main oil pump (22) through a lifting reversing valve (52).

7. The shock absorbing system according to claim 6, wherein there are two third driving portions (51), each third driving portion (51) is arranged in parallel, and the two third driving portions (51) realize series-parallel action through two lifting reversing valves (52), and each third driving portion (51) is provided with two power-assisted lifting stabilizing valve assemblies (70).

8. The shock absorbing system of claim 6, wherein the power-assisted lift stabilizing valve assembly (70) comprises a fifth regulating valve (71), a fifth one-way valve (72), and a fifth stabilizing valve (73), the fifth regulating valve (71), the fifth one-way valve (72), and the fifth stabilizing valve (73) being disposed on a line between the tank (21) and the lift reversal valve (52), wherein the fifth one-way valve (72) is disposed in series with the fifth regulating valve (71), and the fifth stabilizing valve (73) is disposed in parallel with the fifth one-way valve (72), the fifth regulating valve (71);

the preset pressure value of the fifth stabilizing valve (73) is P3, the sweeping disc (42) is suddenly subjected to external force in the operation process of a vehicle, the sweeping disc is P4, when P4 is greater than P3, an oil cylinder of the third driving part (51) retracts due to the fact that the external force overcomes P3, oil of the oil cylinder flows into the oil tank (21) through the fifth stabilizing valve (73), and an oil cylinder small cavity of the third driving part (51) supplies oil to a small cavity of the third driving part (51) through the fifth one-way valve (72), so that the axial height of the sweeping disc (42) is adjusted in a self-adaptive mode.

9. The shock absorbing system of claim 3, further comprising a spill valve assembly (60), the spill valve assembly (60) being connected to port B of the first four-way reversing valve (23), the spill valve assembly (60) comprising a second regulator valve (62), a fourth check valve (63), and a second stabilizer valve (64), wherein,

the oil tank (21) with be provided with on the pipeline between first four-way reversing valve (23) second governing valve (62), fourth check valve (63) and second stabilizing valve (64), fourth check valve (63) with second governing valve (62) set up in series, second stabilizing valve (64) with fourth check valve (63) second governing valve (62) set up parallelly connected.

10. The shock absorbing system according to claim 9, wherein the preset pressure value of the second stabilizing valve (64) is P4, the magnitude of the external force applied to the mid suction port (32) is P5, when P5 > P4, the oil in the large cylinder chamber of the first drive portion (31) flows into the oil tank (21) through the second regulating valve (62), and the oil in the small cylinder chamber of the first drive portion (31) is supplied by the fourth check valve (63).

11. The shock absorbing system according to claim 10, wherein there are two central suction cup systems (30), two central suction cup systems (30) are arranged in parallel, and two central suction cup systems (30) are respectively arranged on both sides of the vehicle frame (10), and the cylinder of the first driving portion (31) of each central suction cup system (30) is arranged in communication with the main oil pump (22) through the first four-way selector valve (23);

when the two middle suction cup systems (30) are simultaneously subjected to the force of an obstacle, namely P6, in the operation process of the vehicle, the two middle suction cup systems (30) are simultaneously held back, and P6 is more than P4, oil in oil cylinder large cavities of the two first driving parts (31) flows into the oil tank (21) through the second stabilizing valve (64), and the axial height of the middle suction port (32) is adjusted in a self-adaptive mode.

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