CN107939764B

CN107939764B - Hydraulic valve group and drilling machine

Info

Publication number: CN107939764B
Application number: CN201711364342.1A
Authority: CN
Inventors: 张中华; 李明帅; 刘志刚
Original assignee: Jiangsu XCMG Construction Machinery Institute Co Ltd
Current assignee: Jiangsu XCMG Construction Machinery Institute Co Ltd
Priority date: 2017-12-18
Filing date: 2017-12-18
Publication date: 2024-02-02
Anticipated expiration: 2037-12-18
Also published as: CN107939764A

Abstract

The invention relates to a hydraulic valve group and a drilling machine. The hydraulic valve group comprises a valve (1) and at least two valve seats (2), at least one valve (1) is arranged on each valve seat (2), the valve seats (2) are provided with flow passages communicated with the valve (2), and two adjacent valve seats (2) are detachably connected. By means of the technical scheme, two adjacent valve seats are detachably connected, so that the valve seats can be increased or decreased according to the requirement of a hydraulic system, and modularization of the hydraulic valve bank is achieved.

Description

Hydraulic valve group and drilling machine

Technical Field

The invention relates to the field of engineering machinery, in particular to a hydraulic valve group and a drilling machine.

Background

The drilling machine comprises a bracket, a driving part capable of moving along the vertical direction relative to the bracket and a drilling tool arranged on the driving part. The driving component is used for driving the drilling tool to rotate. The driving part is detachably connected with the bracket, the drilling tool is detachably connected with the driving part, and the drilling machine can perform various operations by configuring different driving parts and the drilling tool. In order to facilitate the replacement of the drilling machine, the drilling machine often adopts a modularized design.

Fig. 1 shows a schematic diagram of a hydraulic valve block of a prior art drilling machine. As shown in fig. 1, the hydraulic valve block of the prior art drilling machine comprises a valve seat 2' and a plurality of valves 1' arranged on the valve seat 2', and a flow passage communicated with the valves 1' is arranged on the valve seat 2 '. The valve 1 'is detachably connected with the valve seat 2', and when the valve has a problem, the valve 1 'can be replaced or the valve 1' can be maintained only by detaching the valve 1 'from the valve seat 2'.

When the drilling machine needs to be added with valves due to changing operation modes or adding new functions, the existing hydraulic valve group is convenient for adding new valves, so that the existing hydraulic valve group is inconvenient for expanding a hydraulic system.

Disclosure of Invention

The invention aims to provide a hydraulic valve group and a drilling machine, so as to solve the problem that the existing hydraulic valve group is inconvenient for expanding a hydraulic system.

According to an aspect of an embodiment of the present invention, there is provided a hydraulic valve block including:

a valve; and

at least two valve seats are respectively provided with at least one valve, the valve seats are provided with flow passages communicated with the valves, and two adjacent valve seats are detachably connected.

Optionally, the valve seats are provided with a first connecting part and a second connecting part matched with the first connecting part, and the first connecting part and the second connecting part which are respectively arranged on the two adjacent valve seats are connected so as to connect the two adjacent valve seats together.

Optionally, the first connecting portion and the second connecting portion are respectively disposed at two sides of the valve seat.

Optionally, the first connecting portion includes a first hole, the second connecting portion includes a second hole, and the hydraulic valve assembly further includes a first connecting member penetrating through the first hole and the second hole to connect the first connecting portion and the second connecting portion respectively provided on the adjacent two valve seats together.

Optionally, the valve seat is provided with a recess, and the first hole and the second hole are respectively arranged at two sides of the recess.

Alternatively, the flow passages of adjacent two valve seats are connected or disconnected.

Optionally, the valve seat is provided with a first fluid port communicating with a flow passage therein, the first fluid port being for communicating with an adjacent valve seat.

Optionally, the hydraulic valve block further comprises a sealing member for sealing off the first fluid port.

Optionally, the hydraulic valve block further comprises a plate-like member provided on one side of the valve seat, the plate-like member being provided with a groove for accommodating the sealing member.

Alternatively, the valve seats are arranged in one-to-one correspondence with the valves, which are mounted on the respective valve seats.

Optionally, the valve is detachably connected to the valve seat.

According to another aspect of the present application, there is also provided a drilling machine further comprising the hydraulic valve block described above.

By means of the technical scheme, two adjacent valve seats are detachably connected, so that the valve seats can be increased or decreased according to the requirement of a hydraulic system, and modularization of the hydraulic valve bank is achieved.

Other features of the present invention and its advantages will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

FIG. 1 shows a schematic diagram of a prior art hydraulic valve block;

FIG. 2 shows a schematic diagram of the configuration of a hydraulic valve block of an embodiment of the present invention;

FIG. 3 shows an exploded view of a hydraulic valve block of an embodiment of the present invention;

FIG. 4 shows a schematic structural view of a valve seat of a hydraulic valve block according to an embodiment of the present invention;

FIG. 5 shows a schematic view of another angular configuration of a valve seat of a hydraulic valve block of an embodiment of the present invention;

FIG. 6 illustrates a hydraulic valve block of an embodiment of the present invention; and

fig. 7 shows a schematic diagram of a hydraulic valve block of an embodiment of the invention.

Drawing of the figure in (a): 1. a valve; 2. a valve seat; 3. a recess; 4. a first connector; 5. a first plate-like member; 6. a second plate-like member; 7. a second connector; 8. a first connection portion; 9. a second connecting portion; 10. a second fluid port; 11. a sealing member; 12. a groove; 13. a bolt; 14. a through hole; 15. a duct; 16. and (3) a threaded hole.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Fig. 2 shows a schematic structural view of the hydraulic valve group of the present embodiment. Fig. 3 shows an exploded view of the hydraulic valve block of the present embodiment.

As shown in fig. 2 and 3 in combination, the hydraulic valve group of the present embodiment includes a plurality of valves 1 and a plurality of valve seats 2 provided in one-to-one correspondence with the valves 1. The valves 1 are mounted on respective valve seats 2. Of course, it may also be preferred that at least one valve seat 2 is fitted with two or more valves 1. The two adjacent valve seats 2 are detachably connected so as to increase or decrease the valve seats according to the requirement of a hydraulic system, and the modularization of the hydraulic valve seats is realized.

The valve seats 2 are provided with flow passages communicating with the respective valves 1. The valve 1 comprises an inlet, a return port, a first working port and a second working port.

Fig. 4 shows a schematic perspective view of the valve seat 2 of the present embodiment. Fig. 5 shows a schematic view of the valve seat 2 of the present embodiment at another angle.

As shown in fig. 3 to 5, the valve 1 of the present embodiment is mounted on the top surface 2e of the valve seat 2 and abuts against the top surface of the valve seat 2.

As shown in fig. 3, the valve 1 is provided with a through hole 14, the valve seat 2 is provided with a threaded hole 16 coaxial with the through hole 14, and the bolt 13 passes through the through hole 14 to be in threaded engagement with the threaded hole 16 so as to detachably mount the valve 1 on the corresponding valve seat 2.

The top surface 2e of the valve seat 2 is provided with a plurality of pore passages 15, and the pore passages 15 are respectively communicated with an inlet, a return port, a first working port and a second working port of the valve 1.

The inlet is used for communicating the pump, the return port is used for communicating the return oil tank, and the first working port and the second working port are both used for communicating the hydraulic actuating element.

Fig. 7 shows a schematic diagram of the hydraulic valve block of the present embodiment, and the valve 1 has a first state and a second state as shown in connection with fig. 7. In the first state, the inlet is communicated with the first working port, the second working port is communicated with the backflow port, hydraulic fluid provided by the pump flows to the hydraulic actuating element through the inlet and the first working port so that the hydraulic actuating element moves along the first direction, and hydraulic fluid discharged by the hydraulic actuating element flows to the backflow tank through the second working port and the backflow port.

In the second state, the inlet is communicated with the second working port, the first working port is communicated with the backflow, hydraulic fluid provided by the pump flows to the hydraulic actuating element through the inlet and the second working port so that the hydraulic actuating element moves towards the second direction, and hydraulic fluid discharged by the hydraulic actuating element flows to the oil return tank through the first working port and the backflow.

Optionally, the hydraulic actuator comprises a hydraulic cylinder or a hydraulic motor.

The valve seat 2 is further provided with an a port, a B port, a C port and a D port which are respectively communicated with the plurality of the duct 15. Wherein port a communicates with the first working port of the valve 1 through a corresponding duct 15; the port B is communicated with a second working port of the valve 1 through a corresponding pore canal 15; the port C is communicated with the inlet of the valve 1 through a corresponding pore canal 15; the port D communicates with the return port through a corresponding port channel 15.

The port a and the port B are respectively communicated with the hydraulic actuator through pipelines so that the first working port and the second working port of the valve 1 are communicated with the hydraulic actuator.

The port C communicates with the pump via a line to allow hydraulic fluid provided by the pump to be delivered to the inlet of the valve 1. The port D is communicated with an oil return tank through a pipeline so that the oil return port of the valve 1 is communicated with the oil return tank.

As shown in fig. 5, ports a and B are provided on the valve seat front side surface 2C, and ports C and D are provided on the bottom surface 2D of the valve seat 2.

The first side 2a of the valve seat 2 is provided with a first fluid port 18 for communicating with an adjacent valve seat 2. The first fluid port 18 communicates with the flow passage of the valve seat 2.

The first fluid port 18 includes a P port and a T port, wherein the P port communicates with a C port on the valve seat 2. The T port is communicated with the D port on the valve seat 2.

A second fluid port 10 for communicating with an adjacent valve seat 2 is provided on the second side 2b of the valve seat 2. The second side 2b is opposite to the first side 2 a. The second fluid port 10 communicates with the flow passage of the valve seat 2.

The second fluid port 10 includes a P ' port and a T ' port, wherein the P ' port communicates with a C port on the valve seat 2. The port T' is communicated with the port D on the valve seat 2.

The first side face 2a of the valve seat 2 and the second side face 2b of the adjacent valve seat 2 are opposed, and the first fluid port 18 and the second fluid port 10 provided on the adjacent two valve seats 2 are provided opposed, respectively, so as to communicate the adjacent two valve seats 2. Wherein, the P mouth of the valve seat 2 is communicated with the P 'of the adjacent valve seat 2, and the T mouth of the valve seat 2 is communicated with the T' of the adjacent valve seat 2.

As shown in fig. 3, the hydraulic valve block further includes a sealing member 11 for sealing the first fluid port 18 or the second fluid port 10.

The hydraulic valve block further comprises a plate-like member provided at a side of the valve seat 2, the plate-like member being detachably connected to the valve seat. The side of the plate-like part facing the valve seat 2 is provided with a groove 12 for receiving a sealing part.

As shown in fig. 2 and 3, the hydraulic valve block of the present embodiment includes a plurality of valve seats 2 arranged side by side, and a valve 1 is provided on each valve seat 2. Adjacent two valve seats 2 are detachably connected.

Wherein the above-mentioned plate-like members comprise a first plate-like member 5 located between adjacent two valve seats and a second plate-like member 6 arranged outside the valve seat 2 at the end of the hydraulic valve block.

Wherein grooves 12 are formed in both side surfaces of the first plate-like member 5 facing the adjacent two valve seats 2, and sealing members 11 are formed in the grooves 12.

The first plate-like member 5 is detachably connected to the valve seats 2 in order to connect or disconnect adjacent valve seats 2 according to the needs of the hydraulic system.

In this embodiment, a first side of the valve seat 2 is provided with a first connecting portion 8, a second side of the valve seat 2 is provided with a second connecting portion 9 adapted to the first connecting portion 8, and the first connecting portion 8 and the second connecting portion 9 respectively provided on two adjacent valve seats 2 are connected to connect the two adjacent valve seats 2 together.

In this embodiment, a plurality of valve seats 2 with the same structure can be connected in sequence, so that the number of the valve seats 2 can be changed according to the requirement of a hydraulic system, and the modular design of the hydraulic valve seats is facilitated.

Wherein the first connecting part 8 comprises a first hole and the second connecting part 9 comprises a second hole, and the hydraulic valve block further comprises a first connecting piece 4 penetrating the first hole and the second hole to connect two adjacent valve seats 2 together. Optionally, the first connector 4 comprises a bolt.

Optionally, at least one of the first and second holes is a threaded hole.

The valve seat 2 is provided with a recess 3, and the first hole and the second hole are respectively positioned at two sides of the recess 3 so as to connect two adjacent valve seats 2 by using a first connecting piece 4.

Optionally, the first plate-like member 5 is provided with a third hole, and the first connector 4 passes through the first hole, the second hole and the third hole to connect the first plate-like member 5 and the two valve seats 2 adjacent thereto.

The second plate-like member 6 is provided with a fourth hole and the hydraulic valve block further comprises a second connection 7 for connecting the second plate-like member 6 to the valve seat 2 adjacent thereto. The second connection 7 comprises a bolt.

The foregoing description of the exemplary embodiments of the invention is not intended to limit the invention to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Claims

1. A hydraulic valve block, comprising:

a valve (1); and

at least two valve seats (2), at least one valve (1) is arranged on the valve seats (2), the valve seats (2) are provided with flow passages communicated with the valve (1), two adjacent valve seats (2) are detachably connected,

a plurality of pore passages 15 are arranged on the top surface (2 e) of the valve seat (2), the pore passages 15 are respectively communicated with the inlet, the reflux port, the first working port and the second working port of the valve (1),

the valve seat (2) is also provided with an A port, a B port, a C port and a D port which are respectively communicated with the plurality of pore passages (15), wherein the A port is communicated with the first working port of the valve (1) through the corresponding pore passages (15); the port B is communicated with a second working port of the valve (1) through a corresponding pore canal (15); the port C is communicated with the inlet of the valve (1) through the corresponding pore canal (15); the port D is communicated with the reflux port through a corresponding pore canal (15),

a first fluid port (18) for communicating with the adjacent valve seat (2) is arranged on the first side surface (2 a) of the valve seat (2),

the first fluid port (18) comprises a P port and a T port, wherein the P port is communicated with a C port on the valve seat (2), the T port is communicated with a D port on the valve seat (2),

a second fluid port (10) for communicating with the adjacent valve seat (2) is arranged on the second side surface (2 b) of the valve seat (2),

the second fluid port (10) comprises a P 'port and a T' port, wherein the P 'port is communicated with a C port on the valve seat (2), the T' port is communicated with a D port on the valve seat (2),

the first side face (2 a) of the valve seat (2) is opposite to the second side face (2 b) of the adjacent valve seat (2), and a first fluid port (18) and a second fluid port (10) which are respectively arranged on the adjacent two valve seats (2) are oppositely arranged so as to facilitate the communication of the adjacent two valve seats (2).

2. The hydraulic valve group according to claim 1, characterized in that the valve seat (2) is provided with a first connecting portion (8) and a second connecting portion (9) adapted to the first connecting portion (8), the first connecting portion (8) and the second connecting portion (9) respectively provided on two adjacent valve seats (2) being connected to connect the two adjacent valve seats (2) together.

3. Hydraulic valve group according to claim 2, characterized in that the first connection (8) and the second connection (9) are provided on both sides of the valve seat (2), respectively.

4. The hydraulic valve group according to claim 2, characterized in that the first connection portion (8) comprises a first hole and the second connection portion (9) comprises a second hole, and the hydraulic valve assembly further comprises a first connection member (4) penetrating in the first hole and the second hole to connect together the first connection portion (8) and the second connection portion (9) respectively provided on the adjacent two valve seats (2).

5. Hydraulic valve group according to claim 4, characterized in that the valve seat (2) is provided with a recess (3), the first and the second holes being provided on both sides of the recess (3), respectively.

6. Hydraulic valve group according to claim 1, characterized in that the flow channels of adjacent two of said valve seats (2) are connected or disconnected.

7. A hydraulic valve set according to claim 6, wherein the valve seat (2) is provided with a first fluid port (18) communicating with a flow passage therein, the first fluid port (18) being adapted to communicate with an adjacent valve seat (2).

8. Hydraulic valve group according to claim 7, further comprising a sealing member (11) for sealing off the first fluid port (18).

9. A hydraulic valve group according to claim 8, further comprising a plate-like member (5) provided on one side of the valve seat (2), the plate-like member (5) being provided with a groove (12) in which the sealing member (11) is seated.

10. Hydraulic valve group according to claim 1, characterized in that the valve seats (2) are arranged in a one-to-one correspondence with the valves (1), the valves (1) being mounted on the respective valve seats (2).

11. Hydraulic valve group according to claim 1, characterized in that the valve (1) is detachably connected with the valve seat (2).

12. A drilling machine comprising a hydraulic valve group according to any one of claims 1 to 11.