CN214577987U - Flow dividing and collecting valve device, milling machine running driving system and milling machine - Google Patents

Abstract

The application provides a flow distributing and collecting valve device, a milling machine driving system and a milling machine. Wherein, divide the flow dividing valve device to include: the valve body is provided with an oil inlet and a plurality of oil outlets; the flow dividing assembly is arranged in the valve body, comprises at least three equal-quantity flow dividing and collecting valves with one inlet and two outlets, is connected through a pipeline and forms an inlet and at least four flow dividing ports, the inlet is connected to the oil inlet through a pipeline, and each flow dividing port is connected to an oil outlet through a pipeline; and the control valve assembly is arranged in the valve body, is connected into each pipeline connecting the flow dividing port and the oil outlet and can supply oil liquid into the pipelines so as to realize the switching of equal flow dividing and free flow dividing. In the technical scheme of this application, utilize a plurality of one to advance two equivalent branch flow dividing valve of play to realize one minute four equivalent shunting function, the technical difficulty is less relatively with the processing degree of difficulty, is favorable to reduce cost to can switch between equivalent shunting and the free reposition of redundant personnel, be applicable to the operating mode of difference.

Description

Flow dividing and collecting valve device, milling machine running driving system and milling machine

Technical Field

The application relates to the technical field of milling machines, in particular to a flow distributing and collecting valve device, a milling machine driving system and a milling machine.

Background

At present, in a one-pump four-motor running hydraulic system of a milling machine, four running motors need to be controlled by one-inlet four-outlet equivalent flow dividing and collecting valve, and because a slide valve device which is usually adopted has certain technical difficulty and processing difficulty, the technical scheme of adopting a plurality of one-inlet two-outlet flow dividing valve combinations is provided in the prior art to realize one-inlet four-outlet equivalent flow dividing, but the structure of the scheme is complex, the mode switching of equivalent flow dividing and free flow dividing cannot be realized, and the application range is limited.

SUMMERY OF THE UTILITY MODEL

According to an embodiment of the present invention, it is intended to improve at least one of technical problems existing in the prior art or the related art.

To this end, it is an object according to embodiments of the present invention to provide a distribution and collection valve arrangement.

Another object of an embodiment according to the present invention is to provide a milling machine travel drive system.

It is another object of an embodiment of the present invention to provide a milling machine.

In order to achieve the above object, according to an embodiment of a first aspect of the present invention, there is provided a flow distributing and collecting valve device including: the valve body is provided with an oil inlet and a plurality of oil outlets; the flow dividing assembly is arranged in the valve body, comprises at least three equal-quantity flow dividing and collecting valves with one inlet and two outlets, is connected through a pipeline and forms an inlet and at least four flow dividing ports, the inlet is connected to the oil inlet through a pipeline, and each flow dividing port is connected to an oil outlet through a pipeline; and the control valve assembly is arranged in the valve body, is connected into each pipeline connecting the flow dividing port and the oil outlet and can supply oil liquid into the pipelines so as to realize the switching of equal flow dividing and free flow dividing.

According to an embodiment of the first aspect of the present invention, the flow dividing and collecting valve device comprises a valve body, a flow dividing assembly and a control valve assembly. The valve body is used as a base body of the flow dividing and collecting valve device and provides an accommodating space for the flow dividing assembly; the valve body is provided with an oil inlet and an oil outlet for connection to an oil supply and to a load, for example a travel motor of a milling machine. The flow dividing assembly comprises at least three equivalent flow dividing and collecting valves arranged in the valve body, each equivalent flow dividing and collecting valve is a one-inlet two-outlet flow dividing valve, and equivalent flow dividing can be realized; the at least three equivalent flow dividing and collecting valves are connected through pipelines to form an inlet and at least four branch ports and are respectively butted with an oil inlet and an oil outlet of the valve body through pipelines. The control valve assembly is connected to each pipeline connected with the shunt port and the oil outlet, oil can be supplied to the oil outlet through the control valve assembly when needed, free shunt is achieved, mode switching of equal shunt and free shunt is achieved, and therefore the control valve assembly is applicable to different use requirements.

It should be noted that the number of the equivalent flow dividing and collecting valves may be three, which is used to implement an equivalent flow dividing function of one inlet and four outlets, and certainly, the number of the equivalent flow dividing and collecting valves may be set to be greater than three, so as to implement equivalent flow dividing functions of other forms.

The branch flow dividing valve device in the scheme realizes the equivalent flow dividing function of one inlet, four outlets or more by utilizing the combination of the equivalent flow dividing valve of the existing one inlet and two outlets, has simple structure, relatively smaller technical difficulty and processing difficulty, is favorable for reducing cost, can synchronously control four running motors of the milling machine when being applied to a running driving system of the milling machine, can simultaneously perform mode switching of equivalent flow dividing and free flow dividing according to use requirements, and is suitable for different running working conditions.

In addition, the branch flow dividing valve device in the above technical solution provided according to an embodiment of the present invention may further have the following additional technical features:

in the above technical solution, the number of the equivalent flow dividing and collecting valves is three, and the equivalent flow dividing and collecting valves include a first flow dividing and collecting valve and two second flow dividing and collecting valves, and two outlets of the first flow dividing and collecting valve are respectively connected with an inlet of one second flow dividing and collecting valve; wherein, the inlet of the first distributing and collecting valve forms an inlet, and the outlet of each second distributing and collecting valve forms a flow dividing port.

In the technical scheme, the flow distribution assembly specifically comprises a first flow distribution and collection valve and two second flow distribution and collection valves, two outlets of the first flow distribution and collection valve are respectively connected to inlets of the two second flow distribution and collection valves to form the flow distribution assembly with one inlet and four flow distribution ports, the flow distribution assembly with one inlet and four outlets is realized through a relatively mature one-inlet two-outlet flow distribution and collection valve in the prior art, and the technical difficulty and the processing difficulty can be effectively reduced.

In the above technical solution, the control valve assembly includes: the first reversing valve is provided with a first medium inlet, a first medium outlet and an oil return port, the first medium inlet is connected with the control oil path, the oil return port is connected with the oil tank through a pipeline, and the first reversing valve can enable the first medium inlet or the oil return port to be communicated with the first medium outlet through reversing; and the control valve port of each logic valve is connected with the first medium outlet through a pipeline, and the two connecting ports of each logic valve are respectively connected with one inflow port and one shunt port through pipelines.

In this solution, the control valve assembly comprises a first directional valve and four logic valves. In the four logic valves, two connecting ports of each logic valve are respectively connected with the oil inlet and the oil outlet and are connected in parallel with the corresponding flow dividing ports. The first medium inlet of the first reversing valve is connected with the control oil path, the second medium inlet is respectively connected with the control valve port of each logic valve, and the oil return port is connected to the oil tank, so that the communication state of the logic valves is controlled through the first reversing valve, and the switching between the equivalent shunting mode and the free shunting mode is further performed. Specifically, when the first medium outlet is communicated with the first medium inlet, the oil path is controlled to supply oil to the control valve port of the logic valve, so that the two connecting ports of the logic valve are closed, and at the moment, the oil is supplied to the oil outlet only through the shunt port of the shunt assembly, so that equal shunt is realized; when the first medium outlet is communicated with the oil return port, the pressure of a control valve port of the logic valve is reduced, the two connecting ports are communicated under the pressure of oil liquid, and oil is supplied to the oil outlet, so that free flow division is realized.

In the above technical scheme, one end of the control oil path, which is far away from the first medium inlet, is connected to the oil inlet.

In the technical scheme, one end of the control oil path far away from the first medium inlet is connected to the oil inlet, so that when the first medium inlet is communicated with the first medium outlet, part of oil flowing into the oil inlet flows into the logic valve through the control oil path, control of the logic valve is realized, the flow dividing assembly and the control oil path share one oil inlet, only one oil supply device needs to be connected, and the structure and the connection relation are simplified.

In the above technical scheme, the valve body is provided with a control oil inlet, and the first medium inlet is connected to the control oil inlet through a pipeline.

In the technical scheme, the valve body is provided with the independent control oil inlet, and the first medium inlet is connected with the control oil inlet through the pipeline, so that the first reversing valve can be connected with the independent control oil supply equipment through the control oil inlet, an oil supply device shared by the first reversing valve and the shunting assembly is not needed, different control oil liquids can be adopted, the operation efficiency of the control valve assembly is favorably improved, and meanwhile, the influence on the shunting assembly can be reduced.

In the above technical solution, the control valve assembly includes: the four second reversing valves are respectively arranged in each pipeline connecting the diversion port and the oil outlet, each second reversing valve is provided with a second medium inlet, a third medium inlet and a second medium outlet, the second medium inlets are communicated with the diversion ports, the third medium inlets are communicated with the oil inlet through pipelines, and the second medium outlets are connected with the oil inlet through pipelines; wherein the second reversing valve is capable of communicating the second medium inlet or the third medium inlet with the second medium outlet by reversing.

In this solution, the control valve assembly comprises four second direction valves. A second reversing valve is arranged in each pipeline connecting the flow dividing port and the oil outlet, so that the switching operation of the equal flow dividing mode and the free flow dividing mode is realized through the reversing operation of the second reversing valve. Specifically, each second reversing valve comprises a second medium inlet, a third medium inlet and a second medium outlet, the second medium inlet is communicated with the flow dividing port, the third medium inlet is communicated with the oil inlet, the second medium outlet is communicated with the oil outlet, and the second medium inlet or the third medium inlet is controlled to be communicated with the second medium outlet through reversing operation of the second reversing valve. When the second medium inlet is communicated with the second medium outlet, the oil flows to the four oil outlets respectively after being shunted by the shunt assembly, so that equal shunting is realized; when the third medium inlet is communicated with the second medium outlet, the oil directly flows to the four oil outlets without passing through the flow distribution assembly, and free flow distribution is realized.

In the above technical solution, the branch flow dividing valve device further includes: and the safety valve component is arranged in the valve body, is respectively connected with each flow dividing port, and can be connected with the oil supply device to perform overflow protection or reverse oil supplement on the load.

In the technical scheme, the safety valve assembly is arranged in the valve body, is connected with each flow dividing port and can be connected with the oil supply device through a pipeline, so that when the oil supply amount is larger than the load demand amount (for example, when a running motor is overloaded), the overflow protection effect is achieved, and when the oil supply amount is smaller than the load demand amount (for example, when the running motor slips), the oil supply device can supplement oil to the load through the safety valve assembly, and the phenomenon of air suction can be prevented from occurring to cause load damage.

In the above technical solution, the safety valve assembly includes: each safety valve comprises an overflow valve and a check valve which are connected in parallel, and is provided with a forward port and a reverse port, the forward port can be communicated with the overflow valve, and the reverse port can be communicated with the check valve; the positive port of each safety valve is connected with one shunt port through a pipeline, and the negative port of each safety valve is used for being connected with an oil supply device.

In the technical scheme, the safety valve assembly specifically comprises four safety valves, each safety valve integrates the functions of an overflow valve and a one-way valve, and the two ends of each safety valve are respectively provided with a forward port and a reverse port. When the load is overloaded, the overflow valve is conducted, and redundant oil flows in from the positive port, so that the overflow protection function is realized; when the load slips, the oil of the oil supply device flows into the safety valve through the reverse port, and the one-way valve is conducted to supply oil to the load so as to prevent the load from being vacuumed.

The embodiment of the second aspect of the present invention provides a milling machine driving system that traveles, including: an oil supply device; a drive assembly including at least four travel motors; in the diversity flow valve apparatus according to any one of the embodiments of the first aspect, the oil inlet of the diversity flow valve apparatus is connected to the oil supply apparatus through a pipeline, and each of the oil outlets of the diversity flow valve apparatus is connected to one of the traveling motors through a pipeline.

According to an embodiment of the second aspect of the present invention, the milling machine travel drive system comprises an oil supply device, a drive assembly and the diversion valve arrangement of any one of the embodiments of the first aspect described above. The oil supply device is used for supplying oil to the driving assembly so as to provide power required by the driving assembly. The driving assembly specifically comprises four traveling motors, the input end of each traveling motor is connected with one oil outlet of the flow dividing and collecting valve device through a pipeline, and the oil supply device is connected with the oil inlet of the flow dividing and collecting valve device through a pipeline so as to divide oil supplied by the oil supply device and further flow to the four traveling motors respectively to control the four traveling motors to work. Wherein, divide the reposition of redundant personnel to flow device can realize the equivalent reposition of redundant personnel to carry out synchro control to four motors that travel, also can freely shunt according to the oil demand difference, with the operating mode that traveles that is applicable to the difference.

In addition, the milling machine running driving system in the present aspect also has all the beneficial effects of the diversion valve device in the embodiment of the first aspect, which are not described in detail herein.

An embodiment of the third aspect of the present invention provides a milling machine, including: the milling machine comprises a milling machine body, a milling machine body and a control device, wherein the milling machine body is provided with a plurality of running devices; the milling machine running driving system in the embodiment of the second aspect is arranged on the milling machine body; the driving assembly of the milling machine driving system is in transmission connection with the plurality of driving devices so as to drive the driving devices to work.

The milling machine in this aspect includes a milling machine body and the milling machine travel drive system in the embodiment of the second aspect. The milling machine vehicle body is provided with a plurality of running devices, such as crawler devices, and the running devices are in transmission connection through a driving assembly of a milling machine running driving system so as to output power to the running devices to drive the running devices to work and drive the milling machine vehicle body to run. In particular, four travel motors of the drive assembly may be provided to drive four crawler assemblies of the milling machine, respectively, in order to achieve travel of the milling machine body.

In addition, the milling machine in the present aspect also has all the beneficial effects of the milling machine driving system in the embodiment of the second aspect, which are not described herein again.

Additional aspects and advantages of the embodiments of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of embodiments of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 shows a schematic view of a milling machine travel drive system according to an embodiment of the invention;

fig. 2 shows a schematic view of a milling machine travel drive system according to an embodiment of the invention;

fig. 3 shows a schematic view of a safety valve according to an embodiment of the invention;

fig. 4 shows a schematic view of a logic valve according to an embodiment of the present invention;

fig. 5 shows a schematic view of a milling machine travel drive system according to an embodiment of the invention;

fig. 6 shows a schematic view of a milling machine travel drive system according to an embodiment of the invention;

fig. 7 shows a schematic block diagram of a milling machine according to an embodiment of the present disclosure.

Wherein, the correspondence between the reference numbers and the names of the components in fig. 1 to 7 is as follows:

1 flow dividing and collecting valve device, 11 valve body, 111 oil inlet, 112 oil outlet, 113 safety oil port, 114 control oil inlet, 12 flow dividing assembly, 121 equivalent flow dividing and collecting valve, 122 first flow dividing and collecting valve, 123 second flow dividing and collecting valve, 124 flow inlet, 125 flow dividing port, 13 control valve assembly, 131 first reversing valve, 132 logic valve, 1321 control valve port, 1322 connecting port, 133 control oil way, 134 second reversing valve, 14 safety valve assembly, 141 safety valve, 1411 forward port, 1412 reverse port, 2 milling machine running driving system, 21 oil supply device, 22 driving assembly, 221 running motor, 3 milling machine, 31 milling machine body and 311 running device.

Detailed Description

In order to make the above objects, features and advantages according to the embodiments of the present invention more clearly understood, embodiments according to the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of embodiments according to the invention, however, embodiments according to the invention may be practiced in other ways than those described herein, and therefore the scope of protection of this application is not limited by the specific embodiments disclosed below.

A diversity valve arrangement, a milling machine travel drive system and a milling machine according to some embodiments of the present invention are described below with reference to fig. 1 to 7.

Example one

The embodiment provides a flow dividing and collecting valve device 1, and the flow dividing and collecting valve device 1 comprises a valve body 11, a flow dividing assembly 12 and a control valve assembly 13.

As shown in fig. 1, the valve body 11 serves as a base body of the manifold valve assembly 1, and provides a receiving space for the flow dividing assembly 12 and the control valve assembly 13, and the flow dividing assembly 12 and the control valve assembly 13 are disposed in the valve body 11 to form an integrated valve assembly. The valve body 11 is provided with an oil inlet 111 and an oil outlet 112 to facilitate connection with the oil supply unit 21 and a load (e.g., a travel motor 221 in fig. 1). The flow dividing assembly 12 comprises at least three equivalent flow dividing and collecting valves 121 which are arranged in the valve body 11; each of the equal-quantity flow dividing and collecting valves 121 is a one-inlet two-outlet flow dividing valve, and can divide the flow into one and two parts. At least three equivalent diversion valves 121 are connected by piping to form the diversion assembly 12 and form an inlet 124 and at least four diversion ports 125, wherein the inlet 124 is connected by piping to the oil inlet 111 and each diversion port 125 is connected by piping to one oil outlet 112.

The control valve assembly 13 is connected to each pipeline connecting the diversion port 125 and the oil outlet 112, and oil can be supplied to the oil outlet 112 as required, so that free diversion is realized, and mode switching between equal diversion and free diversion is realized, so as to meet different use requirements.

It should be noted that the number of the equivalent diversion valves 121 may be three as shown in fig. 1 to be connected to form the diversion and collection valve device 1 having a four-in-four equivalent diversion function, and of course, the number of the equivalent diversion valves 121 may be other numbers than three to realize other forms of equivalent diversion functions.

The branch flow dividing valve device 1 in this embodiment utilizes the combination of a plurality of one advances two equal amounts of flow dividing valve 121 to realize one minute four or one minute more equal amounts of reposition of redundant personnel function, and for independent valves, one advances two equal amounts of flow dividing valve 121 technique ripe comparatively, and the structure is simple relatively, and the technical difficulty is less with the processing degree of difficulty, is favorable to reduce cost, simultaneously, can carry out the mode switch of equal amounts reposition of redundant personnel and free reposition of redundant personnel according to the user demand, is applicable to the operating mode of difference. When the system is applied to a travel driving system of a milling machine, the four travel motors 221 of the milling machine can be synchronously controlled, and the control is easy.

Example two

The present embodiment provides a flow distributing and collecting valve device 1, which is further improved on the basis of the first embodiment.

As shown in fig. 2, the flow distribution assembly 12 specifically includes a first distribution manifold valve 122 and two second distribution manifold valves 123. Two outlets of the first collecting valve 122 are respectively connected with inlets of two second collecting valves 123, an inlet of the first collecting valve 122 forms an inlet 124 of the flow distribution assembly 12, and outlets of the two second collecting valves 123 form four flow distribution ports 125 of the flow distribution assembly 12, so as to respectively control four traveling motors 221 of a traveling driving system of the milling machine. The structure and the connection relation of the one-inlet two-outlet equivalent flow dividing and collecting valve 121 of the embodiment are simple, the function of one-inlet four-outlet equivalent flow dividing is achieved, and the technical difficulty and the processing difficulty are low.

EXAMPLE III

The embodiment provides a flow distributing and collecting valve device 1, which is further improved on the basis of the second embodiment.

As shown in fig. 2, a safety valve assembly 14 is further provided in the valve body 11 of the branch flow dividing valve. The relief valve assembly 14 is connected to each of the branch ports 125 and can be connected to the oil supply unit 21 through a pipe to perform a relief protection and a reverse oil replenishment for a load.

Specifically, as shown in fig. 2 and 3, the relief valve assembly 14 specifically includes four relief valves 141, each relief valve 141 integrates the structures and functions of a relief valve and a check valve, and both ends of the relief valve 141 are respectively provided with a forward port 1411 and a reverse port 1412. The valve body 11 is provided with a safety oil port 113, a forward port 1411 of each safety valve 141 is connected to one of the branch ports 125, and a reverse port 1412 is connected to the safety oil port 113 and connected to the oil supply device 21 through a pipeline. When the oil supply amount is greater than the load demand (for example, when the traveling motor 221 is overloaded), the relief valve is turned on, and the excess oil flows into the relief valve 141 through the forward port 1411 and flows back to the oil supply device 21 through the relief port 113, thereby implementing the relief protection function. When the oil supply amount is smaller than the load demand amount (for example, when the traveling motor 221 slips), the oil of the oil supply device 21 flows into the relief valve 141 through the reverse port 1412, and at this time, the check valve is opened to supply the oil to the load, thereby preventing the load from being vacuumed.

Example four

The present embodiment provides a flow distributing and collecting valve device 1, which is further improved on the basis of the third embodiment.

As shown in fig. 2 and 4, the control valve assembly 13 specifically includes a first direction valve 131 and four logic valves 132. One of the two connection ports 1322 of each logic valve 132 is connected to the oil inlet 111, and the other is connected to the oil outlet 112 so as to be connected in parallel with the corresponding flow dividing port 125. The first direction valve 131 is a two-position four-way electromagnetic direction valve, and has four valve ports, i.e., a port a, a port B, a port P, and a port T, wherein the port P of the first direction valve 131 is used as a first medium inlet, and is connected to the control oil path 133, the port T is used as an oil return port, and is connected to the oil tank, the port a is used as a first medium outlet, and is connected to the control valve port 1321 of each logic valve 132, and the port B is kept closed. The communication state of the logic valve 132 is controlled by the reversing operation of the first reversing valve 131, thereby achieving switching of the equal-amount shunt mode and the free-shunt mode. Specifically, when the first directional valve 131 is located at the left position, the port a is communicated with the port T, the port P is connected to the port B, that is, the first medium inlet is closed, the first medium outlet is communicated with the oil return port, at this time, the control oil path 133 is closed, the control valve port 1321 of the logic valve 132 is connected to the oil tank and performs pressure relief, the two connection ports 1322 of the logic valve 132 may be communicated under the pressure of the oil, and the oil flowing from the oil inlet 111 may directly flow to the oil outlet 112 through the logic valve 132, thereby performing free flow diversion. When the first direction valve 131 is located at the right position, the port a is communicated with the port P, the port T is communicated with the port B, that is, the first medium inlet is communicated with the first medium outlet, and the oil return port is closed, at this time, the control oil path 133 supplies oil to the control valve port 1321 of the logic valve 132, so that the two connection ports 1322 of the logic valve 132 are closed, and at this time, oil in the oil inlet 111, for example, is supplied to the oil outlet 112 only through the diversion port 125 of the diversion assembly 12, so as to achieve equal diversion.

As shown in fig. 2, the control oil path 133 is connected to the oil inlet 111, and when the first direction valve 131 is located at the right position, a part of the oil flowing in from the oil inlet 111 flows into the logic valve 132 through the control oil path 133 and flows to the oil outlet 112, so as to achieve free flow diversion.

In another implementation manner of the present embodiment, as shown in fig. 5, a separate control oil inlet 114 is provided on the valve body 11, and the port P of the first direction valve 131 is connected to the control oil inlet 114. The flow dividing and collecting valve assembly 1 may be connected to an independent control oil supply device to supply the control oil to the logic valve 132 without sharing the oil supply device 21 with the flow dividing assembly 12, and the control oil may be made of a material different from the oil supplied from the oil supply device 21 to meet the use requirement of the control valve assembly 13, and at the same time, may reduce the influence on the flow dividing assembly 12.

EXAMPLE five

The present embodiment provides a flow distributing and collecting valve device 1, which is further improved on the basis of the third embodiment.

As shown in fig. 6, the control valve assembly 13 specifically includes four second direction-changing valves 134, which are respectively disposed in each of the pipelines connecting the flow dividing port 125 and the oil outlet 112, so as to perform the switching operation between the equal flow dividing mode and the free flow dividing mode by changing the direction of the second direction-changing valves 134. Specifically, each second directional control valve 134 is provided with four valve ports, i.e., a port P, a port T, a port a and a port B, the port P serves as a second medium inlet and is communicated with one of the diversion ports 125, the port T serves as a third medium inlet and is communicated with the oil inlet 111, the port a serves as a second medium outlet and is communicated with the oil outlet 112, and the port B is kept in a closed state; the communication state of the four ports can be controlled by the reversing operation of the second reversing valve 134. When the second reversing valve 134 is located at the right position, the port P is communicated with the port a, the port T is closed, that is, the second medium inlet is communicated with the second medium outlet, and the third medium inlet is closed, at this time, the oil liquid flowing in from the oil inlet 111 can only flow into the oil outlets 112 through the flow dividing assembly 12 and the second reversing valve 134, and the equal flow dividing is realized for the four oil outlets 112; when the second reversing valve 134 is located at the left position, the port P is closed, the port a is communicated with the port T, that is, the second medium inlet is closed, the third medium inlet is communicated with the second medium outlet, at this time, oil flowing in from the oil inlet 111 directly flows to the oil outlets 112 through the second reversing valve 134, and free flow division is realized for the four oil outlets 112.

EXAMPLE six

The embodiment provides a milling machine traveling driving system 2, which comprises an oil supply device 21, a driving assembly 22 and the diversion valve device 1 in any one of the embodiments.

As shown in fig. 1 to 6, the oil supply device 21 is used for supplying oil to the driving assembly 22 to provide power required by the driving assembly 22; the drive assembly 22 comprises in particular four travel motors 221 for driving the travel means 311 of the milling machine into operation. The oil supply device 21 is connected with an oil inlet 111 of the flow dividing and collecting valve device 1 through a pipeline, and an input end of each running motor 221 is connected with one oil outlet 112 of the flow dividing and collecting valve device 1 through a pipeline; the oil supplied from the oil supply unit 21 flows into the branch flow dividing valve, and flows to different oil outlets 112 after being divided, and further flows into each of the traveling motors 221, so as to control the operation of the four traveling motors 221. Wherein, different according to the user demand who traveles motor 221, divide the switching that the shunt device can realize two kinds of modes of equivalent reposition of redundant personnel and free reposition of redundant personnel, can carry out synchro control to four motors 221 that travel under the equivalent reposition of redundant personnel mode, can divide according to the oil demand under the free reposition of redundant personnel mode to be suitable for the different operating mode that traveles.

In addition, the milling machine travel drive system 2 in the present embodiment has all the advantages of the diversion valve assembly 1 in the embodiment of the first aspect, which will not be described herein again.

One specific embodiment of the milling machine travel drive system 2 described above is provided as follows:

as shown in fig. 1 to 6, the milling machine travel drive system 2 includes an oil supply device 21, a drive assembly 22, and the diversion valve device 1 in any of the embodiments described above.

The oil supply device 21 is used for supplying oil to the driving assembly 22 so as to provide power required by the driving assembly 22; the drive assembly 22 comprises in particular four travel motors 221 for driving the travel means 311 of the milling machine into operation. The flow dividing and collecting valve device 1 is used for dividing oil supplied from the oil supply device 21.

As shown in fig. 1 and 2, the diversity flow valve apparatus 1 includes a valve body 11, a flow dividing assembly 12, a control valve assembly 13, and a relief valve assembly 14. The valve body 11 serves as a base body of the manifold valve assembly 1, and the flow dividing assembly 12, the control valve assembly 13 and the safety valve assembly 14 are disposed in the valve body 11 to form an integrated valve block. The valve body 11 is provided with an oil inlet 111, four oil outlets 112 and a safety oil port 113, the oil inlet 111 is connected with the oil supply device 21 through a pipeline, the number of the oil outlets 112 is four, and each oil outlet 112 is connected with one traveling motor 221 of the driving assembly 22.

The flow dividing assembly 12 includes three equal-amount flow dividing and collecting valves 121, and each equal-amount flow dividing and collecting valve 121 is a one-inlet two-outlet flow dividing valve and can divide the flow into two parts. The three equal-quantity combining valves 121 comprise in particular one first combining dividing valve 122 and two second combining dividing valves 123. Wherein, two outlets of the first combining valve 122 are respectively connected with inlets of two second combining valves 123, the inlet of the first combining valve 122 forms an inlet 124 of the flow distribution assembly 12, and the outlets of the two second combining valves 123 form four flow distribution ports 125 of the flow distribution assembly 12; the inlet port 124 is connected to the inlet port 111 by a pipe, and each of the branch ports 125 is connected to one of the outlet ports 112 by a pipe.

As shown in fig. 2 and 3, the flow dividing and collecting valve is used for overflow protection and reverse oil supply to the load. Specifically, the relief valve assembly 14 specifically includes four relief valves 141, each relief valve 141 integrates the structures and functions of a relief valve and a check valve, and both ends of the relief valve 141 are respectively provided with a forward port 1411 and a reverse port 1412. The valve body 11 is provided with a safety oil port 113, a forward port 1411 of each safety valve 141 is connected to one of the branch ports 125, and a reverse port 1412 is connected to the safety oil port 113 and connected to the oil supply device 21 through a pipeline. When the oil supply amount is greater than the load demand (for example, when the traveling motor 221 is overloaded), the relief valve is turned on, and the excess oil flows into the relief valve 141 through the forward port 1411 and flows back to the oil supply device 21 through the relief port 113, thereby implementing the relief protection function. When the oil supply amount is smaller than the load demand amount (for example, when the traveling motor 221 slips), the oil of the oil supply device 21 flows into the relief valve 141 through the reverse port 1412, and at this time, the check valve is opened to supply the oil to the load, thereby preventing the load from being vacuumed.

The control valve assembly 13 is connected to each pipeline connecting the flow dividing port 125 and the oil outlet 112, and is used for performing mode switching between equal flow dividing and free flow dividing to meet different use requirements.

As shown in fig. 2 and 4, the control valve assembly 13 specifically includes a first direction valve 131 and four logic valves 132. One of the two connection ports 1322 of each logic valve 132 is connected to the oil inlet 111, and the other is connected to the oil outlet 112 so as to be connected in parallel with the corresponding flow dividing port 125. The first direction valve 131 is a two-position four-way electromagnetic direction valve, and has four valve ports, i.e., a port a, a port B, a port P, and a port T, wherein the port P of the first direction valve 131 is used as a first medium inlet, and is connected to the control oil path 133, the port T is used as an oil return port, and is connected to the oil tank, the port a is used as a first medium outlet, and is connected to the control valve port 1321 of each logic valve 132, and the port B is kept closed. The communication state of the logic valve 132 is controlled by the reversing operation of the first reversing valve 131, thereby achieving switching of the equal-amount shunt mode and the free-shunt mode. Specifically, when the first directional valve 131 is located at the left position, the port a is communicated with the port T, the port P is connected to the port B, that is, the first medium inlet is closed, the first medium outlet is communicated with the oil return port, at this time, the control oil path 133 is closed, the control valve port 1321 of the logic valve 132 is connected to the oil tank and performs pressure relief, the two connection ports 1322 of the logic valve 132 may be communicated under the pressure of the oil, and the oil flowing from the oil inlet 111 may directly flow to the oil outlet 112 through the logic valve 132, thereby performing free flow diversion. When the first direction valve 131 is located at the right position, the port a is communicated with the port P, the port T is communicated with the port B, that is, the first medium inlet is communicated with the first medium outlet, and the oil return port is closed, at this time, the control oil path 133 supplies oil to the control valve port 1321 of the logic valve 132, so that the two connection ports 1322 of the logic valve 132 are closed, and at this time, oil in the oil inlet 111, for example, is supplied to the oil outlet 112 only through the diversion port 125 of the diversion assembly 12, so as to achieve equal diversion.

Of course, the control oil path 133 may also be connected to an independent control oil supply device, as shown in fig. 5, the valve body 11 is provided with an independent control oil inlet 114, and the port P of the first direction changing valve 131 is connected to the control oil inlet 114 so as to be connected to the independent control oil supply device through the control oil inlet 114, without sharing the oil supply device 21 with the flow dividing assembly 12.

In another implementation manner of the present embodiment, as shown in fig. 6, the control valve assembly 13 specifically includes four second direction-changing valves 134, which are respectively disposed in each pipeline connecting the diversion port 125 and the oil outlet 112, so as to perform the switching operation between the equal diversion mode and the free diversion mode by the direction change of the second direction-changing valves 134. Specifically, each second directional control valve 134 is provided with four valve ports, i.e., a port P, a port T, a port a and a port B, the port P serves as a second medium inlet and is communicated with one of the diversion ports 125, the port T serves as a third medium inlet and is communicated with the oil inlet 111, the port a serves as a second medium outlet and is communicated with the oil outlet 112, and the port B is kept in a closed state; the communication state of the four ports can be controlled by the reversing operation of the second reversing valve 134. When the second reversing valve 134 is located at the right position, the port P is communicated with the port a, the port T is closed, that is, the second medium inlet is communicated with the second medium outlet, and the third medium inlet is closed, at this time, the oil liquid flowing in from the oil inlet 111 can only flow into the oil outlets 112 through the flow dividing assembly 12 and the second reversing valve 134, and the equal flow dividing is realized for the four oil outlets 112; when the second reversing valve 134 is located at the left position, the port P is closed, the port a is communicated with the port T, that is, the second medium inlet is closed, the third medium inlet is communicated with the second medium outlet, at this time, oil flowing in from the oil inlet 111 directly flows to the oil outlets 112 through the second reversing valve 134, and free flow division is realized for the four oil outlets 112.

The branch flow dividing valve device 1 in this embodiment utilizes the combination of a plurality of one advances two equal amounts of flow dividing valve 121 to realize one minute four equal amounts and shunts the function, and for independent valves, one advances two equal amounts of flow dividing valve 121 technique of going out and is comparatively ripe, and the structure is simple relatively, and the technical difficulty is less with the processing degree of difficulty, is favorable to reduce cost, simultaneously, can carry out the mode switch of equal amounts of reposition of redundant personnel and free reposition of redundant personnel according to the user demand, is applicable to the operating mode of difference. When the system is applied to a travel driving system of a milling machine, the four travel motors 221 of the milling machine can be synchronously controlled, and the control is easy.

EXAMPLE seven

In the present embodiment, a milling machine 3 is provided, and as shown in fig. 1 and 7, the milling machine 3 includes a milling machine body 31 and the milling machine travel drive system 2 in any of the above embodiments.

The milling machine body 31 is provided with a plurality of running means 311, for example crawler means; the drive assembly 22 of the milling machine travel drive system 2 is in transmission connection with the travel device 311 to drive the travel device 311 to operate. For example, the four travel motors 221 of the driving assembly 22 are respectively in transmission connection with four crawler devices of the milling machine body 31 to output power to the crawler devices to drive the crawler devices to work, so as to drive the milling machine body 31 to travel. According to different running conditions of the running device 311, the diversion valve device 1 of the milling machine running driving system 2 can perform equal diversion or free diversion on the four running motors 221, so that synchronous control or differential control on the running device 311 is realized.

In addition, the milling machine 3 in this embodiment has all the advantages of the milling machine travel drive system 2 in any one of the above embodiments, and details thereof are omitted here.

One specific embodiment of the present application is provided below:

in the embodiment, three one-to-two flow dividing and collecting valves are integrated, and the function of one-to-four precise flow dividing and collecting valve is realized in a one-to-two and two-to-four combined design mode; meanwhile, four two-way logic valves are integrally designed, so that the fine flow divider has a free flow dividing function; the switching of the free flow distribution function and the fine flow distribution function is controlled by a reversing valve; the overflow valve protection system with reverse oil supplement and elements are synchronously designed, so that the motor is prevented from being emptied and the system is prevented from being overloaded.

In the embodiment, a two-in-one precise flow dividing valve and a two-way logic valve which have mature technologies are adopted, so that the technical bottleneck does not exist; the dividing and dividing valve and the logic valve are mature standard elements, are not influenced by a supply chain, are easy to process, and have price advantage.

Above combine the figure in detail to describe according to the utility model discloses a technical scheme of some embodiments, utilize a plurality of one to advance two equal quantities to divide the combination of flow dividing valve to realize one minute four or one minute more equal quantities reposition of redundant personnel function, for independent valves, one advances two equal quantities to divide flow dividing valve technique to be comparatively ripe, the structure is simple relatively, the technical degree of difficulty is less with the processing degree of difficulty, be favorable to reduce cost, simultaneously, can carry out the mode switch of equal quantities reposition of redundant personnel and free reposition of redundant personnel according to the user demand, be applicable to the operating mode that traveles of difference. When the system is applied to a driving system of a milling machine, four driving motors of the milling machine can be synchronously controlled, and the control is easy.

In embodiments according to the present application, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. Specific meanings of the above terms in the embodiments according to the present application can be understood by those of ordinary skill in the art as the case may be.

In the description of the embodiments according to the present application, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred devices or units must have a specific direction, be configured and operated in a specific orientation, and thus, should not be construed as limiting the technical aspects of the present application.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example in accordance with the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the purpose of illustrating preferred embodiments of the present application and is not intended to limit the technical solutions of the present application, and it will be apparent to those skilled in the art that various modifications and variations can be made in the technical solutions of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the technical scheme of the application shall be included in the protection scope of the application.

Claims (10)

1. A distribution and collection valve device (1), characterized by comprising:

the valve body (11) is provided with an oil inlet (111) and a plurality of oil outlets (112);

the flow dividing assembly (12) is arranged in the valve body (11), the flow dividing assembly (12) comprises at least three equal-quantity flow dividing and collecting valves (121) with one inlet and two outlets, the equal-quantity flow dividing and collecting valves are connected through pipelines to form an inlet (124) and at least four flow dividing ports (125), the inlet (124) is connected to the oil inlet (111) through a pipeline, and each flow dividing port (125) is connected to one oil outlet (112) through a pipeline;

and the control valve assembly (13) is arranged in the valve body (11), the control valve assembly (13) is connected into each pipeline connecting the flow dividing port (125) and the oil outlet (112), and oil can be supplied into the pipelines so as to realize switching between equal flow dividing and free flow dividing.

2. Diversity flow valve arrangement (1) according to claim 1,

the number of the equivalent flow dividing and collecting valves (121) is three, the equivalent flow dividing and collecting valves comprise a first flow dividing and collecting valve (122) and two second flow dividing and collecting valves (123), and two outlets of the first flow dividing and collecting valve (122) are respectively connected with an inlet of one second flow dividing and collecting valve (123);

wherein the inlet of the first distributing and combining valve (122) forms the inlet (124) and the outlet of each second distributing and combining valve (123) forms the distributing port (125).

3. The diversity flow valve arrangement (1) according to claim 2, characterized in that the control valve assembly (13) comprises:

the first reversing valve (131) is provided with a first medium inlet, a first medium outlet and an oil return port, the first medium inlet is connected with a control oil path (133), the oil return port is connected with an oil tank through a pipeline, and the first reversing valve (131) can enable the first medium inlet or the oil return port to be communicated with the first medium outlet through reversing;

four logic valves (132), wherein the control valve port (1321) of each logic valve (132) is connected with the first medium outlet through a pipeline, and the two connecting ports (1322) of each logic valve (132) are respectively connected with one inflow port (124) and one shunt port (125) through pipelines.

4. Diversity flow valve arrangement (1) according to claim 3,

one end, far away from the first medium inlet, of the control oil path (133) is connected to the oil inlet (111).

5. Diversity flow valve arrangement (1) according to claim 3,

the valve body (11) is provided with a control oil inlet (114), and the first medium inlet is connected to the control oil inlet (114) through a pipeline.

6. The diversity flow valve arrangement (1) according to claim 5, characterized in that the control valve assembly (13) comprises:

the four second reversing valves (134) are respectively arranged in each pipeline connecting the diversion port (125) and the oil outlet (112), each second reversing valve (134) is provided with a second medium inlet, a third medium inlet and a second medium outlet, the second medium inlets are communicated with the diversion port (125), the third medium inlets are communicated with the oil inlet (111) through pipelines, and the second medium outlets are connected with the oil inlet (111) through pipelines;

wherein the second direction changing valve (134) is capable of communicating the second medium inlet or the third medium inlet with the second medium outlet by direction change.

7. The diversity flow valve arrangement (1) according to claim 2, further comprising:

and the safety valve assembly (14) is arranged in the valve body (11), the safety valve assembly (14) is respectively connected with each flow dividing port (125), and the safety valve assembly (14) can be connected with an oil supply device (21) so as to carry out overflow protection or reverse oil supplement on a load.

8. The diversity flow valve arrangement (1) according to claim 7, characterized in that the safety valve assembly (14) comprises:

four relief valves (141), each relief valve (141) comprising a relief valve and a check valve connected in parallel and provided with a forward port (1411) and a reverse port (1412), the forward port (1411) being capable of conducting the relief valve and the reverse port (1412) being capable of conducting the check valve;

wherein the forward port (1411) of each relief valve (141) is connected to one of the branch ports (125) by a line, and the reverse port (1412) of each relief valve (141) is adapted to be connected to an oil supply (21).

9. A milling machine travel drive system (2), characterized by comprising:

an oil supply device (21);

a drive assembly (22) comprising at least four travel motors (221);

the diversity flow valve arrangement (1) according to any of claims 1 to 8, an oil inlet (111) of the diversity flow valve arrangement (1) being connected to the oil supply arrangement (21) by a pipeline, each oil outlet (112) of the diversity flow valve arrangement (1) being connected to one of the travel motors (221) by a pipeline.

10. A milling machine (3), characterized by comprising:

a milling machine body (31), wherein the milling machine body (31) is provided with a plurality of running devices (311);

the milling machine travel drive system (2) of claim 9, provided on the milling machine body (31);

the driving assembly (22) of the milling machine travel driving system (2) is in transmission connection with the plurality of travel devices (311) to drive the travel devices (311) to work.

Images