CN211449251U

CN211449251U - Cartridge valve of hydraulic pile driving system

Info

Publication number: CN211449251U
Application number: CN201922492629.3U
Authority: CN
Inventors: 魏智健; 庞国达; 邓贲
Original assignee: Guangdong Liyuan Hydraulic Machinery Co ltd
Current assignee: Guangdong Liyuan Hydraulic Machinery Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-09-08
Anticipated expiration: 2029-12-30

Abstract

The utility model discloses a cartridge valve of a hydraulic pile driving system, which comprises a valve core, a reset spring, a valve sleeve and a valve cover, wherein an axial through hole of the valve sleeve is communicated with a first sliding cavity of the valve cover to form an axial sliding cavity; the third oil port is communicated with the fourth oil port along the axial through hole by the upward movement of the valve core, and the third oil port is communicated with the fifth oil port along the oil duct of the valve core by the downward movement of the valve core. The invention also discloses a dynamic output control method thereof. The valve sleeve sleeved into the section inside the control cover plate in the prior art and the control cover plate are integrally formed to form the valve cover, the deformation of the valve sleeve in the use process is avoided, and the valve core is prevented from being clamped.

Description

Cartridge valve of hydraulic pile driving system

Technical Field

The utility model relates to a hydraulic pressure pile technical field especially relates to a hydraulic pressure pile system cartridge valve.

Background

At present, in the construction process of a pile foundation, a pile hammer is often required to be used for pile foundation sinking construction, the commonly used pile hammer comprises a hydraulic hammer, a hydraulic vibration hammer, a diesel hammer and the like, and the design of a large-flow dynamic output control method of a cartridge valve has extremely high requirements because a pile driver belongs to high-load dynamic vibration equipment. Especially heavy engineering equipment and large-scale ocean engineering equipment, because of the reasons such as construction environment is abominable, continuous operation time is long, higher requirements are put forward to stability and the security of cartridge valve work, and prior art is difficult to satisfy.

With the development of economic society, large-scale construction projects such as cross-sea bridges, offshore wind power, land grand bridges, super high-rise buildings and the like are more and more, and the requirements of heavy construction equipment required by the large-scale construction projects are more and more prominent. However, since the heavy construction equipment in China starts late, problems exist in many aspects, a large number of core technologies are monopolized by foreign enterprises, and the method comprises a cartridge valve large-flow dynamic output control method of the heavy pile foundation construction equipment.

In a hydraulic pile driving system of a hydraulic pile driving hammer, a differential control oil way is adopted, so that when an oil cylinder moves upwards, oil is stably discharged from an upper cavity of the oil cylinder, when the oil cylinder moves downwards, the upper cavity and the lower cavity of the oil cylinder need to be communicated, the linear speed reaches more than 5m/s, and the flow passing through a control valve is increased by several times when the upper cavity and the lower cavity are communicated. In order to achieve control switching of large flow, a control valve group is generally formed by combining an electromagnetic valve and a common cartridge valve, so that reversing switching is performed, but the complexity of an oil way is increased and the reliability of a system is reduced. After multi-stage control, the control response speed is slow, so that the whole hydraulic pile driving system needs higher striking frequency.

Prior art, the company discloses a hydraulic pile system and cartridge valve thereof [ application number: CN201610480824.2], which comprises a control cover plate, a valve core, a valve sleeve, a return spring and a valve core guide sleeve; the valve core is sleeved in the control cover plate through the valve sleeve, the valve sleeve is of a slender thin-walled structure, the assembly precision requirement is high, the longer valve sleeve is inconvenient to process and assemble, and in the using process, the inserted valve in the hydraulic pile driving system belongs to a dynamic vibration structure, and the valve sleeve sleeved in one section of the inner part of the control cover plate is easy to deform, so that the valve core is easy to clamp, the normal work of the equipment in long-term and continuous construction is influenced, and the engineering quality and progress cannot be well guaranteed.

Disclosure of Invention

An object of the utility model is to foretell not enough, provide a hydraulic pile system cartridge valve, this hydraulic pile system cartridge valve embolias the inside one section valve barrel of control apron and control apron integrated into one piece formation valve gap among with prior art, avoids the valve barrel to warp in the use to avoid the card case, the valve barrel changes into only one section of control apron outside among the prior art in addition, makes the valve barrel change short, makes things convenient for the processing and the assembly of valve barrel, practices thrift the cost, improves production efficiency.

The technical scheme is as follows:

a cartridge valve of a hydraulic pile driving system comprises a valve core, a reset spring, a valve cover and a valve cover, wherein the valve cover is provided with a first sliding cavity, the valve cover is provided with an axial through hole, the upper end of the valve cover is hermetically connected with the lower end of the valve cover, the axial through hole of the valve cover is communicated with the first sliding cavity of the valve cover to form an axial sliding cavity, the valve core is installed in the axial sliding cavity through the reset spring, and two ends of the reset spring are respectively connected with the valve core and the valve cover; the valve core sequentially comprises a first section of valve core, a valve core bulge and a second section of valve core from top to bottom, the valve core bulge is positioned between the first section of valve core and the second section of valve core, the valve core bulge is circumferentially and slidably connected with the axial sliding cavity in a sealing manner, the upper end surface of the valve core bulge, the first section of valve core and the axial sliding cavity form a first sealed containing cavity, the lower end surface of the valve core bulge, the second section of valve core and the axial sliding cavity form a second sealed containing cavity, the valve cover is provided with a first oil duct and a second oil duct, and the first oil duct and the second oil duct are respectively communicated with the first sealed containing cavity and the second sealed containing cavity; the lower end face and the middle circumferential direction of the second section of the valve core are respectively provided with a first oil port and a plurality of radial second oil ports, the first oil ports are communicated with the second oil ports to form a valve core oil duct, the lower end face of the valve sleeve is provided with a third oil port, a plurality of radial fourth oil ports and a plurality of radial fifth oil ports are sequentially arranged on the outer circumferential direction of the valve sleeve from bottom to top, the third oil ports pass through the valve core to move upwards along the axial through holes to be communicated with the fourth oil ports, and the third oil ports pass through the valve core to move downwards to follow the valve core oil duct to be communicated with the fifth oil ports.

An inner bulge used for preventing the valve core from moving downwards is arranged on the axial through hole in the valve sleeve, an outer bulge matched with the inner bulge is arranged on the outer side face of the second section of valve core, the inner bulge is located below the fourth oil port, and the outer bulge is located below the second oil port.

The valve cover further comprises a first sealing ring, a first groove is formed in the circumferential direction of the inner side wall of the first sliding cavity, the first sealing ring is installed on the first groove, and the first section of valve core is connected with the first sliding cavity of the valve cover in a sealing and sliding mode through the first sealing ring.

The valve core protrusion is connected with the first sliding cavity of the valve cover in a sealing and sliding mode through the second sealing ring.

Still include the third sealing washer, follow the accent circumference in first sliding chamber is equipped with half and leads to the notch, it is protruding to be equipped with the annular on the up end of valve barrel, be equipped with the third recess on the bellied lateral surface of annular, the third sealing washer is installed on the third recess, the annular of valve barrel up end is protruding to be passed through the third sealing washer with the half of first sliding chamber accent leads to notch phase-match sealing connection.

The middle parts of the first oil duct and the second oil duct are respectively provided with a first flow adjusting bolt and a second flow adjusting bolt, and the channel flow of the first oil duct and the channel flow of the second oil duct are respectively adjusted through the first flow adjusting bolt and the second flow adjusting bolt.

The first oil duct comprises a first oil duct section and a second oil duct section, the first oil duct section is communicated with the second oil duct section in a bending mode, the first flow adjusting bolt is installed at the bending position of the first oil duct section and the second oil duct section, the second oil duct comprises a third oil duct section and a fourth oil duct section, the third oil duct section is communicated with the fourth oil duct section in a bending mode, the second flow adjusting bolt is installed at the bending position of the third oil duct section and the fourth oil duct section, and the first oil duct section and the third oil duct section are communicated with the first sealed accommodating cavity and the second sealed accommodating cavity through the second oil duct section and the fourth oil duct section respectively.

The upper end face of the valve core is provided with a spring concave cavity which is communicated with the valve core oil duct, the cavity bottom of the first sliding cavity of the valve cover is provided with a spring groove, and two ends of the reset spring are respectively arranged on the spring concave cavity and the spring groove and are connected with the spring concave cavity and the spring groove.

It should be noted that:

the foregoing references to "first and second …" do not denote any particular quantity or order, but rather are used to distinguish one name from another.

In the description of the present invention, it is to be understood that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally understood by those skilled in the art, which are merely for convenience of description and simplification of description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

The advantages or principles of the invention are explained below:

1. the utility model provides a pair of hydraulic pressure pile driving system cartridge valve, it improves, optimizes through the synchronization to structure and technology, improves the stability and the efficiency of equipment operation by a wide margin, can ensure the normal work of equipment when long-term, continuous construction, guarantee engineering quality and progress that can be better.

2. The utility model provides a pair of hydraulic pressure pile driving system cartridge valve, including case, reset spring, valve barrel, valve gap, this cartridge valve falls into two sections designs with prior art well valve barrel, wherein embolias one section valve barrel and the control of control apron inside among the former prior art and laps integrated into one piece to form the valve gap, avoid the valve barrel to warp in the use, thereby avoid the card case, locate in addition, expose one section formation of control apron among the former prior art the utility model discloses product aluminium's valve barrel to with valve gap sealing connection, change the valve barrel after the weak point, make things convenient for the processing and the assembly of valve barrel, practice thrift the cost, improve production efficiency.

3. The utility model discloses the setting of interior arch, evagination makes case downstream have an extreme position.

4. The utility model discloses a first section case is through the sealed sliding connection of first smooth chamber of first sealing washer and valve gap, improves the leakproofness of first sealed appearance chamber upper end.

5. The utility model discloses a case is protruding to be connected through the sealed sliding connection of the first smooth chamber of second sealing washer and valve gap, improves the leakproofness of first sealed appearance chamber lower extreme, the sealed appearance chamber upper end that holds of second respectively.

6. The utility model discloses an annular arch of valve sleeve up end is through groove mouth phase-match sealing connection in the half limit of third sealing washer and first smooth chamber accent, improves the connection leakproofness between valve barrel and the valve gap.

7. The utility model discloses first flow control bolt, second flow control bolt's setting are used for adjusting the flow of first oil duct, second oil duct respectively, facilitate the use.

9. The utility model discloses set up first flow control bolt, second flow control bolt in the department of buckling of first oil duct, second oil duct, convenient control respectively.

9. The utility model discloses because spring cavity and case oil duct intercommunication, pressure oil can be by case oil duct flow direction installation reset spring's spring cavity, can guarantee that the pressure of the top and the bottom of case equals, avoids the pressure to the worries of case, guarantees that the case action is stable.

Drawings

Fig. 1 is a cross-sectional view of the overall structure of the hydraulic pile driving system cartridge valve hammer lifting state of the embodiment of the present invention.

Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.

Fig. 3 is a cross-sectional view of the whole structure of the drop hammer state of the cartridge valve of the hydraulic pile driving system.

Fig. 4 is a sectional view of the cartridge valve of the hydraulic pile driving system according to the embodiment of the present invention in an uncocked state.

Description of reference numerals:

10. the valve comprises a valve core, 11, a first section of valve core, 12, a valve core protrusion, 121, a second groove, 13, a second section of valve core, 131, a first oil port, 132, a second oil port, 133, a valve core oil passage, 134, an outer protrusion, 14, a spring cavity, 20, a return spring, 30, a valve sleeve, 31, an axial through hole, 311, an inner protrusion, 32, a third oil port, 33, a fourth oil port, 34, a fifth oil port, 35, an annular protrusion, 351, a third groove, 40, a valve cover, 41, a first sliding cavity, 411, a first groove, 412, a half-side through notch, 413, a spring groove, 42, a first oil passage, 421, a first flow regulating bolt, 422, a first section of oil passage, 423, a second section of oil passage, 43, a second oil passage, 431, a second flow regulating bolt, 432, a third section of oil passage, 433, a fourth section of oil passage, 50, an axial sliding cavity, 61, a first sealing cavity, 62, a second sealing cavity, 71, First sealing ring, 72, second sealing ring, 73, third sealing ring.

Detailed Description

The following describes embodiments of the present invention in detail.

Referring to fig. 1 to 4, the cartridge valve of the hydraulic pile driving system provided by the present invention comprises a valve core 10, a return spring 20, a valve sleeve 30 and a valve cover 40, wherein the valve cover 40 has a first sliding cavity 41, the valve sleeve 30 has an axial through hole 31, the upper end of the valve sleeve 30 is hermetically connected with the lower end of the valve cover 40, the axial through hole 31 of the valve sleeve 30 is communicated with the first sliding cavity 41 of the valve cover 40 to form an axial sliding cavity 50, the valve core 10 is installed in the axial sliding cavity 50 through the return spring 20, and two ends of the return spring 20 are respectively connected with the valve core 10 and the valve cover 40; the valve core 10 sequentially comprises a first section of valve core 11, a valve core protrusion 12 and a second section of valve core 13 from top to bottom, the valve core protrusion 12 is positioned between the first section of valve core 11 and the second section of valve core 13, the circumferential direction of the valve core protrusion 12 is in sealed sliding connection with the axial sliding cavity 50, the upper end surface of the valve core protrusion 12, the first section of valve core 11 and the axial sliding cavity 50 form a first sealed containing cavity 61, the lower end surface of the valve core protrusion 12, the second section of valve core 13 and the axial sliding cavity 50 form a second sealed containing cavity 62, a first oil duct 42 and a second oil duct 43 are arranged on the valve cover 40, and the first oil duct 42 and the second oil duct 43 are respectively communicated with the first sealed containing cavity 61 and; a first oil port 131 and a plurality of radial second oil ports 132 are respectively arranged on the lower end surface and the middle circumferential direction of the second-stage valve core 13, the first oil port 131 is communicated with the second oil ports 132 to form a valve core oil duct 133, a third oil port 32 is arranged on the lower end surface of the valve sleeve 30, a plurality of radial fourth oil ports 33 and a plurality of radial fifth oil ports 34 are sequentially arranged on the outer circumferential direction of the valve sleeve 30 from bottom to top, the third oil port 32 is communicated with the fourth oil ports 33 along the axial through hole 31 through the upward movement of the valve core 10, and the third oil port 32 is communicated with the fifth oil ports 34 along the valve core oil duct 133 through the downward movement of the valve core 10.

This cartridge valve falls into two sections designs with valve barrel 30 among the prior art, wherein embolias the inside one section valve barrel 30 of control apron and control apron integrated into one piece among the former prior art to form valve gap 40, avoid valve barrel 30 to warp in the use, thereby avoid card case 10, locate in addition, expose one section formation of control apron among the former prior art the utility model discloses the valve barrel 30 of product to with valve gap 40 sealing connection, change the valve barrel 30 after the weak point, make things convenient for the processing and the assembly of valve barrel 30, practice thrift the cost, improve production efficiency.

An inner protrusion 311 for preventing the valve core 10 from moving downward is disposed on the axial through hole 31 in the valve sleeve 30, an outer protrusion 134 adapted to the inner protrusion 311 is disposed on the outer side surface of the second-stage valve core 13, the inner protrusion 311 is located below the fourth oil port 33, and the outer protrusion 134 is located below the second oil port 132. The utility model discloses the setting of interior arch 311, outer arch 134 makes case 10 downstream have a extreme position.

The cartridge valve of the hydraulic pile driving system further comprises a first sealing ring 71, a second sealing ring 72 and a third sealing ring 73, a first groove 411 is formed in the circumferential direction of the inner side wall of the first sliding cavity 41, the first sealing ring 71 is installed on the first groove 411, and the first section valve core 11 is in sealing sliding connection with the first sliding cavity 41 of the valve cover 40 through the first sealing ring 71. The sealability at the upper end of the first receiving seal container 61 is improved.

A second groove 121 is formed along the circumferential direction of the outer side surface of the valve core protrusion 12, the second sealing ring 72 is mounted on the second groove 121, and the valve core protrusion 12 is in sealing sliding connection with the first sliding cavity 41 of the valve cover 40 through the second sealing ring 72. The sealing performance of the lower end of the first sealed containing cavity 61 and the upper end of the second sealed containing cavity 62 are respectively improved.

A half-side through groove 412 is formed in the circumferential direction of the cavity opening of the first sliding cavity 41, an annular protrusion 35 is arranged on the upper end face of the valve sleeve 30, a third groove 351 is formed in the outer side face of the annular protrusion 35, a third sealing ring 73 is installed on the third groove 351, and the annular protrusion 35 on the upper end face of the valve sleeve 30 is in matched sealing connection with the half-side through groove 412 of the cavity opening of the first sliding cavity 41 through the third sealing ring 73. The sealing property of the connection between the valve housing 30 and the valve cover 40 is improved.

The first flow adjusting bolt 421 and the second flow adjusting bolt 431 are respectively arranged at the middle parts of the first oil passage 42 and the second oil passage 43, and the passage flow of the first oil passage and the second oil passage 43 is adjusted by the first flow adjusting bolt 421 and the second flow adjusting bolt 431 respectively. The first flow rate adjusting bolt 421 and the second flow rate adjusting bolt 431 are respectively used for adjusting the flow rates of the first oil passage 42 and the second oil passage 43, and are convenient to use.

The first oil duct 42 comprises a first oil duct 422 and a second oil duct 423, the first oil duct 422 is communicated with the second oil duct 423 in a bending mode, a first flow adjusting bolt 421 is installed at a bending position of the first oil duct 422 and the second oil duct 423, the second oil duct 43 comprises a third oil duct 432 and a fourth oil duct 433, the third oil duct 432 is communicated with the fourth oil duct 433 in a bending mode, a second flow adjusting bolt 431 is installed at a bending position of the third oil duct 432 and the fourth oil duct 433, and the first oil duct 422 and the third oil duct 432 are respectively communicated with the first sealed accommodating cavity 61 and the second sealed accommodating cavity 62 through the second oil duct 423 and the fourth oil duct 433. The utility model discloses set up first flow control bolt 421, second flow control bolt 431 in the department of buckling of first oil duct 42, second oil duct 43, convenient control respectively.

The upper end face of the valve core 10 is provided with a spring concave cavity 14, the spring concave cavity 14 is communicated with the valve core oil passage 133, the cavity bottom of the first sliding cavity 41 of the valve cover 40 is provided with a spring groove 413, and two ends of the return spring 20 are respectively installed on the spring concave cavity 14 and the spring groove 413 and are connected with the spring concave cavity 14 and the spring groove 413. The utility model discloses because spring cavity 14 and case oil duct 133 intercommunication, pressure oil can be by case oil duct 133 flow direction to the spring cavity 14 of installation reset spring 20, can guarantee that the pressure of the top and the bottom of case 10 equals, avoids pressure to the worries of case 10, guarantees that case 10 action is stable.

The utility model provides a hydraulic pressure pile driving system cartridge valve through synchronous improvement, the optimization to structure and technology, improve the stability and the efficiency of equipment operation by a wide margin, can ensure the normal work of equipment when long-term, continuous construction, guarantee engineering quality and progress that can be better.

The above are only specific embodiments of the present invention, and the protection scope of the present invention is not limited thereby; any replacement and improvement made on the basis of not violating the conception of the utility model belong to the protection scope of the utility model.

Claims

1. The cartridge valve of the hydraulic pile driving system is characterized by comprising a valve core, a reset spring, a valve sleeve and a valve cover, wherein the valve cover is provided with a first sliding cavity, the valve sleeve is provided with an axial through hole, the upper end of the valve sleeve is hermetically connected with the lower end of the valve cover, the axial through hole of the valve sleeve is communicated with the first sliding cavity of the valve cover to form an axial sliding cavity, the valve core is installed in the axial sliding cavity through the reset spring, and two ends of the reset spring are respectively connected with the valve core and the valve cover; the valve core sequentially comprises a first section of valve core, a valve core bulge and a second section of valve core from top to bottom, the valve core bulge is positioned between the first section of valve core and the second section of valve core, the valve core bulge is circumferentially and slidably connected with the axial sliding cavity in a sealing manner, the upper end surface of the valve core bulge, the first section of valve core and the axial sliding cavity form a first sealed containing cavity, the lower end surface of the valve core bulge, the second section of valve core and the axial sliding cavity form a second sealed containing cavity, the valve cover is provided with a first oil duct and a second oil duct, and the first oil duct and the second oil duct are respectively communicated with the first sealed containing cavity and the second sealed containing cavity; the lower end face and the middle circumferential direction of the second section of the valve core are respectively provided with a first oil port and a plurality of radial second oil ports, the first oil ports are communicated with the second oil ports to form a valve core oil duct, the lower end face of the valve sleeve is provided with a third oil port, a plurality of radial fourth oil ports and a plurality of radial fifth oil ports are sequentially arranged on the outer circumferential direction of the valve sleeve from bottom to top, the third oil ports pass through the valve core to move upwards along the axial through holes to be communicated with the fourth oil ports, and the third oil ports pass through the valve core to move downwards to follow the valve core oil duct to be communicated with the fifth oil ports.

2. The cartridge valve of the hydraulic piling system according to claim 1, wherein an inner protrusion for preventing the valve core from moving downward is provided on the axial through hole in the valve sleeve, an outer protrusion adapted to the inner protrusion is provided on the outer side surface of the second segment of the valve core, the inner protrusion is located below the fourth oil port, and the outer protrusion is located below the second oil port.

3. The cartridge valve of hydraulic piling system of claim 1 further comprising a first sealing ring, a first groove is formed along the circumference of the inner side wall of the first sliding chamber, the first sealing ring is mounted on the first groove, and the first section of valve core is in sealing sliding connection with the first sliding chamber of the valve cover through the first sealing ring.

4. The cartridge valve of hydraulic piling system of claim 1 further comprising a second sealing ring having a second groove circumferentially disposed along an outer side of said valve plug protrusion, said second sealing ring being mounted in said second groove, said valve plug protrusion being sealingly slidably connected to said first sliding chamber of said valve cover via said second sealing ring.

5. The cartridge valve of the hydraulic piling system as recited in claim 1, further comprising a third sealing ring, wherein a half-side through groove is formed along the circumferential direction of the cavity opening of the first sliding cavity, an annular protrusion is formed on the upper end face of the valve sleeve, a third groove is formed on the outer side face of the annular protrusion, the third sealing ring is mounted on the third groove, and the annular protrusion on the upper end face of the valve sleeve is in matched sealing connection with the half-side through groove opening of the cavity opening of the first sliding cavity through the third sealing ring.

6. The cartridge valve of the hydraulic piling system according to any one of claims 1 to 5, wherein the first and second oil passages are respectively provided with a first flow regulating bolt and a second flow regulating bolt at the middle parts thereof, and the passage flow of the first and second oil passages is regulated by the first and second flow regulating bolts.

7. The cartridge valve of the hydraulic pile driving system according to claim 6, wherein the first oil passage comprises a first oil passage section and a second oil passage section, the first oil passage section is in bent communication with the second oil passage section, the first flow rate adjusting bolt is used for installing the bent parts of the first oil passage section and the second oil passage section, the second oil passage comprises a third oil passage section and a fourth oil passage section, the third oil passage section is in bent communication with the fourth oil passage section, the second flow rate adjusting bolt is used for installing the bent parts of the third oil passage section and the fourth oil passage section, and the first oil passage section and the third oil passage section are respectively communicated with the first sealed cavity and the second sealed cavity through the second oil passage section and the fourth oil passage section.

8. The cartridge valve of the hydraulic piling system according to any one of claims 1 to 5, wherein a spring concave cavity is arranged on the upper end surface of the valve core, the spring concave cavity is communicated with the oil passage of the valve core, a spring groove is arranged on the bottom of the first sliding cavity of the valve cover, and two ends of the return spring are respectively arranged on and connected with the spring concave cavity and the spring groove.