CN211174148U - Hydraulic control one-way valve device for hydraulic support - Google Patents

Abstract

The utility model provides a pilot operated check valve device for hydraulic support, include the pilot operated check valve device body that has valve rod (2), set up to the pilot operated valve body that has ejector pin (10), ejector pin (10) of pilot operated valve body set up to the hookup of formula of triggering with valve rod (2) of pilot operated check valve device body, through pilot operated check valve device body, the effect to the pilot operated check valve in stand rodless chamber has been realized, through the pilot operated valve body, the pilot uninstallation to stand rodless chamber has been realized, consequently, effectively avoid instantaneous impact off-load, the protection safety valve that links to each other with the stand, a pressure sensor, the manometer is avoided assaulting, the security performance of hydraulic support motion has been improved.

Description

Hydraulic control one-way valve device for hydraulic support

Technical Field

The utility model relates to a hydraulically controlled check valve device, especially a hydraulically controlled check valve device for hydraulic support.

Background

The hydraulic support is a structure for controlling the mine pressure of a coal face, the mine pressure of the coal face acts on the hydraulic support in an external load mode, in a mechanical system in which the hydraulic support and surrounding rocks of the coal face interact, if the resultant force of all supporting parts of the hydraulic support and the resultant force of the external load of a top plate acting on the hydraulic support are exactly in the same straight line, the hydraulic support is quite suitable for the surrounding rocks of the coal face, a hydraulic control one-way valve is one of important hydraulic elements for realizing the action of the hydraulic support, so the hydraulic control one-way valve device for the hydraulic support is an important coal mine component, in the existing hydraulic control one-way valve device for the hydraulic support, coal mining equipment is gradually replaced by equipment with higher automation degree, the accident rate of coal mining is reduced, the yield is greatly improved, the hydraulic support is a main supporting device for a comprehensive mining face, the moving speed of the hydraulic support influences the coal mining efficiency, along with the application of the hydraulic support with large mining height, a small-flow-rate-used upright post is inconvenient to be gradually replaced by the hydraulic control one-way valve used for the upright post by the hydraulic control one-way valve, the existing hydraulic support has the maximum flow rate of 400L/min, the maximum flow rate of the upright post, the hydraulic support, the sealing structure can not meet the performance of the maintenance of the existing upright post, and the maintenance of the.

Disclosure of Invention

The object of the utility model is a hydraulically controlled check valve device for hydraulic support.

In order to overcome the technical defect, the utility model aims at providing a hydraulically controlled check valve device for hydraulic support, consequently effectively avoid the instantaneous impact off-load, the protection is avoided strikeing with relief valve, pressure sensor, the manometer that the stand links to each other, has improved the security performance of hydraulic support motion.

In order to achieve the purpose, the utility model adopts the technical proposal that: the pilot operated check valve device comprises a pilot operated check valve device body with a valve rod and a pilot operated valve body with a mandril, wherein the mandril of the pilot operated valve body is connected with the valve rod of the pilot operated check valve device body in a triggering mode.

Because the hydraulic control check valve device body and the pilot valve body are designed, the hydraulic control check valve of the rodless cavity of the stand column is acted through the hydraulic control check valve device body, and pilot unloading of the rodless cavity of the stand column is realized through the pilot valve body, so that instantaneous impact unloading is effectively avoided, a safety valve, a pressure sensor and a pressure gauge which are connected with the stand column are protected from impact, and the safety performance of the movement of the hydraulic support is improved.

The utility model designs a, according to the mode of carrying out the doublestage uninstallation to the no pole chamber of stand be connected liquid accuse check valve device body and guide's valve body each other.

The utility model designs a, according to the mode of the volume of unloading of guide's third the guide's valve body and the hookup of liquid accuse check valve device body.

The utility model discloses a, two at least liquid accuse check valve device bodies set up to be the mode of integration an organic whole with a guide valve body and arrange the distribution.

The utility model discloses a, wherein, still have plug, valve casing, reset spring, valve body, disk seat, high-pressure spring and compress tightly the liquid accuse check valve device body of swivel nut.

The utility model relates to a, wherein, still have valve barrel, guide's spring and the stifled guide's valve body of valve.

The utility model discloses a, still include the first annex device that has the core vent and first annex device sets up at liquid accuse check valve device body.

The utility model discloses a, be provided with valve casing, valve plug and air release plug on the valve body respectively, be provided with plug, valve rod, disk seat respectively in the valve casing and compress tightly the swivel nut and the valve rod sets up to hookup with plug contact, is provided with reset spring between valve rod and valve casing and at the disk seat with compress tightly and be provided with high-pressure spring between the swivel nut, be provided with the valve barrel and the ejector pin setting is provided with guide's spring between ejector pin and valve plug between valve plug and valve body in the valve barrel.

The utility model designs an eighth pore canal body arranged on the rear end face part of the block part of the valve body, a first pore canal body, a third pore canal body and a fourth pore canal body respectively arranged on the lower end face part of the block part, a second pore canal body, a fifth pore canal body and a sixth pore canal body respectively arranged on the upper end face part of the block part, a seventh pore canal body and a third cavity body respectively arranged on the right end face part of the block part, a first cavity body and a second cavity body respectively arranged on the left end face part of the block part, a first cavity body communicated with the second cavity body, a first pore canal body, a third pore canal body and a fourth pore canal body respectively communicated with the second cavity body, a second pore canal body, a fifth pore canal body and a sixth pore canal body respectively communicated with the first cavity body, a seventh pore canal body communicated with the third pore canal body and an eighth pore canal body communicated with the rodless cavity of the stand column, the first pore canal body, the second pore canal body and the third pore canal body are connected with a high-pressure liquid port part of the pump station through a reversing valve, the fourth pore canal body and the fifth pore canal body are arranged to be high-pressure liquid control ports, the sixth pore canal body is arranged to be connected with a pressure indicator, the first cavity and the second cavity are respectively arranged to be in threaded connection with a valve rod, the third cavity is arranged to be in threaded connection with a valve plug, the seventh pore canal body is arranged to be connected with an exhaust plug, the block part is arranged to be a rectangular strip-shaped body, and the eighth pore canal body, the first pore canal body, the second pore canal body, the third pore canal body, the fourth pore canal body, the fifth pore canal body, the sixth pore canal body, the first cavity, the second cavity, the seventh pore canal body and the third cavity are respectively arranged to be circular holes, a valve seat is arranged between the eighth pore channel body and the first pore channel body and the second pore channel body, and an ejector rod is arranged between the eighth pore channel body and the third pore channel body.

The utility model discloses a, be provided with the annular flange body in the valve barrel portion of valve casing and the annular flange body sets up to coupleing with valve rod contact, the side portion of the valve barrel portion that lies in the left end of the annular flange body is provided with first side hole body and is provided with the second side hole body in the side portion of the valve barrel portion that lies in the right-hand member of the annular flange body, the left end of valve barrel portion sets up respectively to coupleing and the right-hand member head of valve barrel portion sets up to coupleing with plug and valve body, first side hole body and second side hole body set up respectively to communicate and the left top end terminal surface portion of the annular flange body set up to coupleing with reset spring contact, the valve barrel portion sets up to circular tubulose, first side hole body and second side hole body set up respectively to the circular port shape body and.

The utility model discloses a, left end in the pole portion of valve rod is provided with the step body and is provided with annular groove body in the lateral surface portion of the step body, right-hand member head in pole portion is provided with the contact body and the right-hand member head in pole portion sets up to and compresses tightly the hookup of swivel nut screw thread formula, pole portion sets up respectively to with the valve casing, reset spring, disk seat and high-pressure spring run through the cluster formula hookup and the right-hand member terminal surface portion of the step body sets up to hookup with reset spring contact, the left end of pole portion sets up to hookup and the contact body sets up to hookup with ejector pin contact with plug contact, annular groove body sets up to and the annular groove body sets up to the U font shape body with the corresponding distribution of valve casing.

The utility model discloses a, the plug sets up to the screw rod that has the hexagonal hole and the plug sets up to hookup with valve casing screw thread formula, the inner end of plug sets up to hookup with valve rod contact.

The utility model discloses a, reset spring sets up to circular column spring and one of them end of reset spring sets up to hookup with valve casing contact, and one of them other end of reset spring sets up to hookup with valve rod contact.

The utility model discloses a, be provided with the step hole body and the left end of seat sets up to hookup with valve rod slidingtype at the right-hand member end of the seat of disk seat, the left end of seat sets up to hookup with valve casing contact, the lateral surface portion of seat sets up to hookup with valve body contact and the shrink portion of the step hole body sets up to holding the formula hookup with high-pressure spring, the extension portion of the step hole body sets up to holding the formula hookup and the seat sets up to circular tubulose with compressing tightly the swivel nut, the step hole body sets up to circular port shape body.

The utility model discloses a, be provided with central hole portion and the right-hand member head of cover portion sets up to hookup with valve rod screw thread formula, and the lateral surface portion of cover portion sets up to hookup with the disk seat and central hole portion sets up to and holds the formula hookup with high-pressure spring, and cover portion sets up to circular tubulose body and central hole portion sets up to circular hole bodily form.

The utility model discloses a, high pressure spring sets up to circular column spring and one of them end of high pressure spring sets up to hookup with the disk seat contact, and wherein another end of high pressure spring sets up to and compresses tightly swivel nut contact hookup.

The utility model discloses a, the valve block sets up the screw rod that has the blind hole body for interior end and the valve block sets up to hookup with the valve body screw thread formula, the blind hole body of valve block sets up respectively to hookup with valve barrel and guide's spring.

The utility model discloses a, the valve barrel sets up to the siphonozooid that has Y font through-hole and be provided with the ninth pore way body on the valve barrel, and the ninth pore way body sets up to hookup with the ejector pin contact and the left end of valve barrel sets up to hookup with the valve body, and the right-hand member head of valve barrel sets up to hookup with the valve block and the Y font through-hole of valve barrel sets up to hookup with the ejector pin.

The utility model discloses a, the ejector pin sets up to the font claviform body in and the flange portion of ejector pin sets up to hookup with the valve barrel contact, and the left end of ejector pin sets up to hookup with valve rod contact and the right-hand member head of ejector pin sets up to hookup with guide's spring contact.

The utility model discloses a, guide's spring sets up to circular post spring and one of them end of guide's spring sets up to hookup with the ejector pin contact, and wherein another end of guide's spring sets up to hookup with valve plug contact.

The utility model relates to a, the core vent sets up to the ventilative stopper that has the ball that ends to lead to and the core vent sets up to hookup with the valve body screw thread formula.

The utility model discloses a, valve body and plug, the valve rod, the valve casing, reset spring, the valve seat, high pressure spring, compress tightly the swivel nut, the valve barrel, the ejector pin, guide spring and valve plug set up to distribute according to the mode of guide's uninstallation and the central line of plug, the central line of valve rod, the central line of valve casing, reset spring's central line, the central line of valve seat, high pressure spring's central line, compress tightly the swivel nut's central line, the central line of valve barrel, the central line of ejector pin, guide spring's central line and the central line of valve plug set up on same straight line, a swivel nut, a valve rod, a valve casing, a reset spring, a valve seat, a high pressure spring, a compress tightly the swivel nut, a valve barrel, an ejector pin, a guide spring and a valve plug set up to constitute a set of guide's uninstallation part and at least two sets up in the, the sleeve part is connected with the step hole body, the seat part is connected with the rod part, the seat part is connected with the valve barrel part in a contact mode, the contact body is connected with the ejector rod in a contact mode, the valve barrel part is connected with the block part in a connecting mode, the annular flange body is connected with the rod part in a connecting mode, the step body is connected with the valve barrel part in a connecting mode, sealing rings are arranged between the valve barrel part and the block part, between the annular flange body and the rod part, between the step body and the valve barrel part, between the seat part and the rod part, between the valve sleeve and the valve body, between the valve sleeve and the valve plug, between the valve sleeve and the ejector.

The technical effects of the utility model reside in that: the main seal of the hydraulic control one-way valve adopts a stainless steel-to-steel seal pair, has longer service life than the original metal and rubber seal structure, and has the characteristics of high hardness, high precision, good high-pressure sealing performance, corrosion resistance, pollution resistance, scouring resistance and the like.

In this technical scheme, valve rod and ejector pin are basic unit, also the utility model discloses a necessary technical feature, plug, valve casing, reset spring, valve body, disk seat, high-pressure spring, compress tightly swivel nut, valve barrel, guide spring, valve plug and core vent are the functional unit, are the characteristics that realize the utility model discloses an other technological effects, eighth pore body, first pore body, second pore body, third pore body, fourth pore body, fifth pore body, sixth pore body, first cavity, second cavity, seventh pore body, third cavity, piece, valve barrel portion, first side hole body, second side hole body, annular flange body, cell body, step body, annular concave recess, contact body, seat portion, step hole body, cover portion, centre bore portion, the design of these technical features of ninth pore body are the technical feature who accords with the patent law and implement the rule.

In the technical scheme, the pilot operated check valve device body and the pilot valve body for carrying out two-stage unloading on the rodless cavity of the upright post are important technical characteristics, and have novelty, creativity and practicability in the technical field of pilot operated check valve devices for hydraulic supports, and terms in the technical scheme can be explained and understood by patent documents in the technical field.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Figure 1 is a schematic view of the present invention,

figure 2 is a top view of figure 1,

FIG. 3 is a schematic view showing the connection relationship between the valve rod 2, the valve housing 3, the valve body 5, the valve seat 6, the pressing screw sleeve 8 and the valve housing 9,

a plug-1, a valve rod-2, a valve casing-3, a return spring-4, a valve body-5, a valve seat-6, a high-pressure spring-7, a pressing screw sleeve-8, a valve sleeve-9, a push rod-10, a pilot spring-11, a valve plug-12, an exhaust plug-13, an eighth pore body-50, a first pore body-51, a second pore body-52, a third pore body-53, a fourth pore body-54, a fifth pore body-55, a sixth pore body-56, a first cavity-57, a second cavity-58, a seventh pore body-59, a third cavity-501, a block-502, a valve cylinder-31, a first side pore body-32, a second side pore body-33, an annular flange body-34, a rod part-21, a high-pressure spring-7, a pressing screw sleeve-8, a valve sleeve-9, a, A step body-22, an annular groove body-23, a contact body-24, a seat part-61, a step hole body-62, a sleeve part-81, a central hole part-82 and a ninth hole body-99.

Detailed Description

Terms such as "having," "including," and "comprising," as used herein with respect to the present invention, are to be understood as not specifying the presence or addition of one or more other elements or combinations thereof.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features mentioned in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other, and unless otherwise specified, the equipment and materials used in the following examples are commercially available, and if the processing conditions are not specified, please refer to the purchased product specification or follow the conventional method in the art.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Fig. 1 is a first embodiment of the present invention, which is specifically described with reference to the accompanying drawings, and includes a plug 1, a valve rod 2, a valve housing 3, a return spring 4, a valve body 5, a valve seat 6, a high-pressure spring 7, a pressing screw sleeve 8, a valve housing 9, a push rod 10, a pilot spring 11, a valve plug 12 and a vent plug 13, and the valve housing 3, the valve plug 12 and the vent plug 13 are respectively disposed on the valve body 5, the plug 1, the valve rod 2, the valve seat 6 and the pressing screw sleeve 8 are respectively disposed in the valve housing 3, and the valve rod 2 is configured to be in contact connection with the plug 1, the return spring 4 is disposed between the valve rod 2 and the valve housing 3, the high-pressure spring 7 is disposed between the valve seat 6 and the pressing screw sleeve 8, the valve housing 9 is disposed between the valve plug 12 and the valve body 5, and the push rod 10 is disposed in the.

In the present embodiment, the eighth orifice 50 is provided at the rear end face portion of the block portion 502 of the valve body 5 and the first, third, and fourth orifices 51, 53, and 54 are provided respectively at the lower end face portion of the block portion 502, the second, fifth, and sixth orifices 52, 55, and 56 are provided respectively at the upper end face portion of the block portion 502 and the seventh and third orifices 59 and 501 are provided respectively at the right end face portion of the block portion 502, the first and second cavities 57 and 58 are provided respectively at the left end face portion of the block portion 502 and the first cavity 57 is provided in communication with the second cavity 58, the first, third, and fourth orifices 51, 53, and 54 are provided in communication with the second cavity 58 and the second, fifth, and sixth orifices 52, 55, and 56 are provided in communication with the first cavity 57, the seventh orifice 59 is provided in communication with the third orifice 53 and the eighth orifice 50 is provided in communication with the post stem-less cavity, the first hole body 51, the second hole body 52, and the third hole body 53 are provided to be coupled with a high-pressure liquid port portion of the pump station through a selector valve and the fourth hole body 54 and the fifth hole body 55 are provided to be high-pressure liquid control ports, the sixth hole body 56 is provided to be coupled with a pressure indicating gauge and the first cavity 57 and the second cavity 58 are respectively provided to be screw-coupled with the valve stem 2, the third cavity 501 is provided to be screw-coupled with the valve plug 12 and the seventh hole body 59 is provided to be coupled with the vent plug 13, the block 502 is provided as a rectangular bar-shaped body and the eighth hole body 50, the first hole body 51, the second hole body 52, the third hole body 53, the fourth hole body 54, the fifth hole body 55, the sixth hole body 56, the first cavity 57, the second cavity 58, the seventh hole body 59, and the third hole body 501 are respectively provided as circular hole bodies, the valve seat 6 is provided between the eighth hole body 50 and the first hole body 51 and the second hole body 52 and the eighth hole body 50 and the third hole body 50 A ram 10 is provided between the bodies 53.

Through the valve body 5, a supporting connection point of the valve rod 2, the valve plug 12 and the vent plug 13 is formed, the connection with the valve rod 2 is realized through the first cavity 57 and the second cavity 58, the connection with the valve plug 12 is realized through the third cavity 501, the connection with the vent plug 13 is realized through the seventh pore canal 59, the input and output of high-pressure liquid are realized through the first pore canal 51, the second pore canal 52 and the third pore canal 53, the input and output of controlled liquid are realized through the fourth pore canal 54 and the fifth pore canal 55, the connection with the pressure gauge is realized through the sixth pore canal 56, the supporting connection point is realized through the block part 502 as a supporting carrier, and the technical purpose is that: for use as a carrier for other components.

In this embodiment, an annular flange body 34 is provided in the valve cylinder portion 31 of the valve housing 3 and the annular flange body 34 is provided in contact-coupling with the valve stem 2, a first side hole body 32 is provided at a side face portion of the valve cylinder portion 31 located at a left end of the annular flange body 34 and a second side hole body 33 is provided at a side face portion of the valve cylinder portion 31 located at a right end of the annular flange body 34, left ends of the valve cylinder portion 31 are respectively provided to be coupled with the plug 1 and the valve body 5 and a right end of the valve cylinder portion 31 is provided to be coupled in contact with the valve seat 6, the first side hole body 32 and the second side hole body 33 are respectively provided to be communicated with the valve body 5 and a left top end face portion of the annular flange body 34 is provided to be coupled in contact with the return spring 4, the valve cylinder portion 31 is provided as a circular tubular body, the first side hole body 32 and the second side hole body 33 are respectively provided as circular hole-shaped bodies and the.

Through valve casing 3, formed the support tie point to plug 1, valve rod 2, reset spring 4, valve body 5 and disk seat 6, by valve barrel 31, realized being connected with plug 1, realized being connected with reset spring 4, realized being connected with disk seat 6, by first side hole body 32 and second side hole body 33, realized being connected with valve body 5, by annular flange body 34, realized being connected with valve rod 2, its technical aim at: for acting as a support for the valve stem 2.

In the present embodiment, a step body 22 is provided at the left end of a rod portion 21 of a valve rod 2 and an annular groove body 23 is provided at the outer side surface portion of the step body 22, a contact body 24 is provided at the right end of the rod portion 21 and the right end of the rod portion 21 is provided in threaded connection with a pressing screw sleeve 8, the rod portion 21 is respectively provided in serial connection with a valve housing 3, a return spring 4, a valve seat 6 and a high-pressure spring 7 and the right end surface portion of the step body 22 is provided in contact connection with the return spring 4, the left end of the rod portion 21 is provided in contact connection with a plug 1 and the contact body 24 is provided in contact connection with a plunger 10, the annular groove body 23 is provided in distribution corresponding to the valve housing 3 and the annular groove body 23 is provided in a U-shaped groove body, and the rod portion 21, the step.

Through valve rod 2, formed to plug 1, valve casing 3, reset spring 4, disk seat 6, high pressure spring 7, compress tightly the support tie point of swivel nut 8 and ejector pin 10, by pole portion 21, realized being connected with plug 1, realized being connected with valve casing 3, realized being connected with disk seat 6, realized being connected with high pressure spring 7, realized being connected with compressing tightly swivel nut 8, by step body 22, realized being connected with reset spring 4, by contact body 24, realized being connected with ejector pin 10, by annular groove body 23, realized the removal to pole portion 21, its technical aim at: for acting as a support for the valve seat 6 and for pushing the ejector rod 10.

In the present embodiment, the plug 1 is provided as a screw having a hexagonal hole and the plug 1 is provided to be screw-coupled with the valve housing 3, and the inner end of the plug 1 is provided to be contact-coupled with the valve stem 2.

Through plug 1, formed the support tie point to valve rod 2 and valve casing 3, by plug 1, realized being connected with valve rod 2, realized being connected with valve casing 3, its technical aim at: for port sealing of the valve housing 3.

In the present exemplary embodiment, the return spring 4 is configured as a circular cylindrical spring and one end of the return spring 4 is configured to be coupled in contact with the valve housing 3, and the other end of the return spring 4 is configured to be coupled in contact with the valve rod 2.

Through reset spring 4, formed the support tie point to valve rod 2 and valve casing 3, by reset spring 4, realized being connected with valve rod 2, realized being connected with valve casing 3, its technical aim at: used for generating return elastic energy storage for the valve rod 2.

In the present embodiment, a stepped hole body 62 is provided at a right end of a seat portion 61 of the valve seat 6 and a left end of the seat portion 61 is slidably coupled to the valve rod 2, a left end of the seat portion 61 is provided to be in contact-type coupling with the valve housing 3, an outer side surface portion of the seat portion 61 is provided to be in contact-type coupling with the valve body 5 and a constricted portion of the stepped hole body 62 is provided to be accommodatively coupled to the high pressure spring 7, an expanded portion of the stepped hole body 62 is provided to be accommodatively coupled to the packing 8 and the seat portion 61 is provided as a circular tubular body, and the stepped hole.

Through disk seat 6, formed the support tie point to valve rod 2, valve casing 3, valve body 5, high pressure spring 7 and compress tightly swivel nut 8, by seat 61, realized being connected with valve rod 2, realized being connected with valve casing 3, realized being connected with valve body 5, by step hole body 62, realized being connected with high pressure spring 7, realized and compressing tightly the connection of swivel nut 8, its technical aim at: for acting as an intermediate piece for opening and closing the valve body 5.

In the present embodiment, a center hole portion 82 is provided at the left end of the sleeve portion 81 of the compression screw 8 and the right end of the sleeve portion 81 is provided to be screw-coupled with the valve stem 2, the outer side surface portion of the sleeve portion 81 is provided to be coupled with the valve seat 6 and the center hole portion 82 is provided to be accommodatively coupled with the high pressure spring 7, the sleeve portion 81 is provided as a circular tubular body and the center hole portion 82 is provided as a circular hole-shaped body.

Through compressing tightly swivel nut 8, formed the support connection point to valve rod 2, disk seat 6 and high pressure spring 7, by cover portion 81, realized being connected with valve rod 2, realized being connected with disk seat 6, by central hole portion 82, realized being connected with high pressure spring 7, its technical aim at: for acting as a range of motion limiter for the valve seat 6.

In the present exemplary embodiment, the high-pressure spring 7 is configured as a circular cylindrical spring and one end of the high-pressure spring 7 is configured to be coupled in contact with the valve seat 6 and the other end of the high-pressure spring 7 is configured to be coupled in contact with the pressure nut 8.

Through high pressure spring 7, formed the support tie point to disk seat 6 and valve casing 3, by high pressure spring 7, realized being connected with disk seat 6, realized and compressed tightly the connection of swivel nut 8, its technical aim at: for generating return elastic energy storage for the valve seat 6.

In this embodiment, the valve plug 12 is provided as a screw rod having a blind hole body at an inner end and the valve plug 12 is provided to be screw-coupled with the valve body 5, and the blind hole bodies of the valve plug 12 are provided to be coupled with the valve housing 9 and the pilot spring 11, respectively.

Through valve block 12, formed the support tie point to valve body 5, valve barrel 9 and pilot spring 11, by valve block 12, realized being connected with valve body 5, realized being connected with valve barrel 9, realized being connected with pilot spring 11, its technical aim at: for serving as a support for the valve sleeve 9.

In this embodiment, the valve housing 9 is configured as a tubular body having a Y-shaped through hole and a ninth hole 99 is provided on the valve housing 9, the ninth hole 99 is configured to be coupled with the plunger 10 in a contact manner and a left end of the valve housing 9 is configured to be coupled with the valve body 5, a right end of the valve housing 9 is configured to be coupled with the valve plug 12 and the Y-shaped through hole of the valve housing 9 is configured to be coupled with the plunger 10.

Through valve barrel 9, formed the support tie point to valve body 5, ejector pin 10 and valve plug 12, by valve barrel 9, realized being connected with valve body 5, realized being connected with valve plug 12, realized being connected with ejector pin 10 by ninth pore channel 99, its technical aim at: for use as a support for the ram 10.

In the present embodiment, the stem 10 is provided as a middle-shaped rod-shaped body and the flange portion of the stem 10 is provided in contact coupling with the valve housing 9, the left end of the stem 10 is provided in contact coupling with the valve stem 2 and the right end of the stem 10 is provided in contact coupling with the pilot spring 11.

Through ejector pin 10, formed the support tie point to valve rod 2, valve barrel 9 and pilot spring 11, by ejector pin 10, realized being connected with valve rod 2, realized being connected with valve barrel 9, realized being connected with pilot spring 11, its technical aim at: for acting as a control for the opening and closing between the valve sleeve 9 and the valve body 5.

In the present embodiment, the pilot spring 11 is provided as a circular column spring and one end of the pilot spring 11 is provided to be coupled in contact with the stem 10, and the other end of the pilot spring 11 is provided to be coupled in contact with the valve plug 12.

Through pilot spring 11, formed the support tie point to ejector pin 10 and valve plug 12, by pilot spring 11, realized being connected with ejector pin 10, realized being connected with valve plug 12, its technical aim at: used for generating return elastic energy storage for the ejector rod 10.

In the present embodiment, the vent plug 13 is provided as a vent plug having a check ball and the vent plug 13 is provided to be screw-coupled with the valve body 5.

Through the core vent 13, formed the support tie point to valve body 5, by core vent 13, realized being connected with valve body 5, its technical aim at: for discharging the gas in the valve body 5.

In the present embodiment, the valve body 5 and the plug 1, the valve rod 2, the valve housing 3, the return spring 4, the valve seat 6, the high-pressure spring 7, the pressing screw sleeve 8, the valve housing 9, the ejector pin 10, the pilot spring 11, and the valve plug 12 are arranged to be distributed in a pilot unloading manner and the center line of the plug 1, the center line of the valve rod 2, the center line of the valve housing 3, the center line of the return spring 4, the center line of the valve seat 6, the center line of the high-pressure spring 7, the center line of the pressing screw sleeve 8, the center line of the valve housing 9, the center line of the ejector pin 10, the center line of the pilot spring 11, and the center line of the valve plug 12 are arranged on the same straight line, one plug 1, one valve rod 2, one valve housing 3, one return spring 4, one valve seat 6, one high-pressure spring 7, one pressing screw sleeve 8, one valve housing 9, one ejector pin 10, one pilot spring 11, and one valve, the sleeve portion 81 is configured to be coupled with the rod portion 21 in a threaded manner, the sleeve portion 81 is configured to be coupled with the stepped hole body 62, the seat portion 61 is configured to be coupled with the rod portion 21, the seat portion 61 is configured to be coupled with the valve cylinder portion 31 in a contact manner, the contact body 24 is configured to be coupled with the plunger 10 in a contact manner, the valve cylinder portion 31 is configured to be coupled with the block portion 502, the annular flange body 34 is configured to be coupled with the rod portion 21, the stepped body 22 is configured to be coupled with the valve cylinder portion 31, and sealing rings are respectively disposed between the valve cylinder portion 31 and the block portion 502, between the annular flange body 34 and the rod portion 21, between the stepped body 22 and the valve cylinder portion 31, between the seat portion 61 and the rod portion 21, between the valve housing 9 and the valve body 5, between the valve housing.

The port of the high-pressure liquid of the pump station is communicated with the first pore canal body 51 and the second pore canal body 52 through the reversing valve, the high-pressure liquid of the first pore canal body 51 and the high-pressure liquid of the second pore canal body 52 pass through the second side pore canal body 33 to push the seat part 61 to move towards the direction of the pressing threaded sleeve 8, the high-pressure spring 7 is compressed to enable the first pore canal body 51 and the second pore canal body 52 to be communicated with the eighth pore canal body 50, the high-pressure liquid is injected into the rodless cavity of the upright post, after the port of the high-pressure liquid of the pump station is disconnected with the first pore canal body 51 and the second pore canal body 52 through the reversing valve, under the elastic energy storage effect of the high-pressure spring 7, the seat part 61 is pushed to move towards the valve barrel part 31 to enable the first pore canal body 51 and the second pore canal body 52 to be disconnected with the eighth pore canal body 50, the high-pressure liquid is locked in the rodless cavity of the upright post,

when the pressure of the top plate is increased, the pressure of the rodless cavity of the upright column is increased to the opening pressure of the safety valve, so that the pressure of the rodless cavity of the upright column is released, high-pressure liquid is communicated with the first side hole body 32 through the fourth hole body 54 and the fifth hole body 55, the high-pressure liquid is injected into the annular groove body 23 through the first side hole body 32, the rod part 21 is pushed to move inwards in the annular flange body 34, the return spring 4 is compressed, the contact body 24 pushes the top rod 10, the pilot spring 11 is compressed, the ninth hole body 99 and the third hole body 53 are communicated with the eighth hole body 50, the high-pressure liquid in the rodless cavity of the upright column is unloaded through the eighth hole body 50, the ninth hole body 99 and the third hole body 53, the rod part 61 is pushed by the rod part 21 to move towards the direction of the pressing screw sleeve 8, the high-pressure spring 7 is compressed, the first hole body 51 and the second hole body 52 are communicated with the eighth hole body 50, and the high-pressure liquid in the rod, The first pore body 51 and the second pore body 52 are unloaded.

The second embodiment of the present invention connects the pilot operated check valve device body and the pilot operated valve body to each other in a manner of two-stage unloading of the rodless cavity of the column.

In this embodiment, the pilot valve body is coupled to the pilot operated check valve device body in such a manner as to unload the pilot by one third.

In this embodiment, at least two pilot operated check valve device bodies are arranged and distributed in an integrated manner with one pilot valve body.

In the present embodiment, there is also a pilot operated check valve device body having a plug 1, a valve housing 3, a return spring 4, a valve body 5, a valve seat 6, a high pressure spring 7, and a pressing screw sleeve 8.

In the present embodiment, there are also a valve sleeve 9, a pilot spring 11 and a pilot valve body of a valve plug 12.

In this embodiment, a first attachment device having a vent plug 13 is further included and is provided in the pilot operated check valve device body.

A second embodiment of the present invention is based on the first embodiment,

the utility model has the characteristics of down:

1. because the hydraulic control check valve device body and the pilot valve body are designed, the hydraulic control check valve of the rodless cavity of the stand column is acted through the hydraulic control check valve device body, and pilot unloading of the rodless cavity of the stand column is realized through the pilot valve body, so that instantaneous impact unloading is effectively avoided, a safety valve, a pressure sensor and a pressure gauge which are connected with the stand column are protected from impact, and the safety performance of the movement of the hydraulic support is improved.

2. Due to the design of the plug 1, the valve rod 2, the valve casing 3, the return spring 4, the valve body 5, the valve seat 6, the high-pressure spring 7 and the pressing thread sleeve 8, the function of the one-way valve is realized.

3. Due to the design of the valve sleeve 9, the ejector rod 10, the pilot spring 11 and the valve plug 12, the pilot opening function is realized.

4. Due to the design of the vent plug 13, the exhaust treatment of the valve body 5 is realized.

5. Owing to designed the utility model discloses a technical characteristic, in technical characteristic's the effect alone and mutual set, through experimental demonstration, the utility model discloses an each item performance index is 1.7 times at least for current each item performance index, has fine market value through the aassessment.

Still other features associated with the pilot operated check valve assembly body and pilot operated valve body for dual stage unloading of the rodless chamber of the mast are one of the embodiments of the present invention, and the features of the above-described embodiments may be combined in any combination, and in order to satisfy the requirements of the patent laws, patent practice rules and guidelines, all possible combinations of the features of the above-described embodiments will not be described again.

Therefore in the pilot operated check valve device technical field who is used for hydraulic support, all include the pilot operated check valve device body that has valve rod 2, set up to the pilot valve body that has ejector pin 10, the technical content that the ejector pin 10 of pilot valve body set up to trigger the formula hookup with valve rod 2 of pilot operated check valve device body is all in the utility model discloses a protection within range.

Claims (9)

1. A hydraulically controlled check valve device for hydraulic support, characterized by: comprises a pilot-controlled one-way valve device body with a valve rod (2) and a pilot valve body with a mandril (10), wherein the mandril (10) of the pilot valve body is connected with the valve rod (2) of the pilot-controlled one-way valve device body in a triggering way,

at least two hydraulic control one-way valve device bodies are arranged and distributed in an integrated mode with one pilot valve body.

2. A pilot operated check valve assembly for a hydraulic mount as set forth in claim 1 wherein: the hydraulic control one-way valve device body and the pilot valve body are connected with each other in a two-stage unloading mode of the upright post rodless cavity.

3. A pilot operated check valve assembly for a hydraulic mount as set forth in claim 2 wherein: the pilot valve body is connected with the pilot-controlled one-way valve device body in a mode of one third of the unloading amount of the pilot.

4. A pilot operated check valve assembly for a hydraulic mount as set forth in claim 1 wherein: wherein, the hydraulic control one-way valve device body is also provided with a plug (1), a valve shell (3), a return spring (4), a valve body (5), a valve seat (6), a high-pressure spring (7) and a pressing screw sleeve (8),

or a pilot valve body which is also provided with a valve sleeve (9), a pilot spring (11) and a valve plug (12),

or, a first accessory device with a vent plug (13) is also included and is arranged on the pilot-operated check valve device body.

5. The pilot operated check valve apparatus for a hydraulic mount of claim 4, wherein: the valve is characterized in that a valve casing (3), a valve plug (12) and an exhaust plug (13) are respectively arranged on the valve body (5), a plug (1), a valve rod (2), a valve seat (6) and a compression screw sleeve (8) are respectively arranged in the valve casing (3), the valve rod (2) is connected with the plug (1) in a contact mode, a return spring (4) is arranged between the valve rod (2) and the valve casing (3), a high-pressure spring (7) is arranged between the valve seat (6) and the compression screw sleeve (8), a valve sleeve (9) is arranged between the valve plug (12) and the valve body (5), a push rod (10) is arranged in the valve sleeve (9), and a pilot spring (11) is arranged between the push rod (10) and the valve plug (12).

6. A pilot operated check valve assembly for a hydraulic mount according to claim 5 wherein: an eighth hole body (50) is arranged on the rear end face portion of a block portion (502) of the valve body (5), a first hole body (51), a third hole body (53) and a fourth hole body (54) are respectively arranged on the lower end face portion of the block portion (502), a second hole body (52), a fifth hole body (55) and a sixth hole body (56) are respectively arranged on the upper end face portion of the block portion (502), a seventh hole body (59) and a third cavity (501) are respectively arranged on the right end face portion of the block portion (502), a first cavity (57) and a second cavity (58) are respectively arranged on the left end face portion of the block portion (502), the first cavity (57) is communicated with the second cavity (58), the first hole body (51), the third hole body (53) and the fourth hole body (54) are respectively communicated with the second cavity (58), the second hole body (52), A fifth hole body (55) and a sixth hole body (56) are respectively arranged to be communicated with the first cavity (57), a seventh hole body (59) is arranged to be communicated with the third hole body (53) and an eighth hole body (50) is arranged to be communicated with the column rodless cavity, the first hole body (51), the second hole body (52) and the third hole body (53) are arranged to be connected with a high-pressure liquid port of a pump station through a reversing valve and the fourth hole body (54) and the fifth hole body (55) are arranged to be high-pressure liquid control ports, the sixth hole body (56) is arranged to be connected with a pressure indication gauge and the first cavity (57) and the second cavity (58) are respectively arranged to be in threaded connection with the valve rod (2), the third cavity (501) is arranged to be in threaded connection with the valve plug (12) and the seventh hole body (59) is arranged to be connected with the exhaust plug (13), the block portion (502) is arranged to be a rectangular strip-shaped body and the eighth hole body (50), A first pore canal body (51), a second pore canal body (52), a third pore canal body (53), a fourth pore canal body (54), a fifth pore canal body (55), a sixth pore canal body (56), a first cavity body (57), a second cavity body (58), a seventh pore canal body (59) and a third cavity body (501) are respectively arranged into circular hole bodies, a valve seat (6) is arranged between the eighth pore canal body (50) and the first pore canal body (51) as well as the second pore canal body (52), and a mandril (10) is arranged between the eighth pore canal body (50) and the third pore canal body (53),

or, an annular flange body (34) is provided in a valve cylinder portion (31) of the valve housing (3) and the annular flange body (34) is provided to be coupled in contact with the valve stem (2), a first side hole body (32) is provided in a side surface portion of the valve cylinder portion (31) located at a left end of the annular flange body (34) and a second side hole body (33) is provided in a side surface portion of the valve cylinder portion (31) located at a right end of the annular flange body (34), left ends of the valve cylinder portion (31) are respectively provided to be coupled with the plug (1) and the valve body (5) and a right end of the valve cylinder portion (31) is provided to be coupled in contact with the valve seat (6), the first side hole body (32) and the second side hole body (33) are respectively provided to be communicated with the valve body (5) and a left top end surface portion of the annular flange body (34) is provided to be coupled in contact with the return spring (4), the valve cylinder portion (31, the first side hole body (32) and the second side hole body (33) are respectively arranged into circular hole bodies and the annular flange body (34) is arranged into a circular ring body,

or, the left end of the rod part (21) of the valve rod (2) is provided with a step body (22) and the outer side surface part of the step body (22) is provided with an annular groove body (23), the right end of the rod part (21) is provided with a contact body (24) and the right end of the rod part (21) is in threaded connection with the pressing screw sleeve (8), the rod part (21) is respectively in through connection with the valve shell (3), the reset spring (4), the valve seat (6) and the high-pressure spring (7), the right end surface part of the step body (22) is in contact connection with the reset spring (4), the left end of the rod part (21) is in contact connection with the screw plug (1) and the contact body (24) is in contact connection with the mandril (10), the annular groove body (23) is distributed corresponding to the valve shell (3) and the annular groove body (23) is arranged as a U-shaped groove body, the rod part (21), the step body (22) and the contact body (24) are respectively arranged into a circular columnar body,

or the plug (1) is a screw rod with a hexagonal hole, the plug (1) is in threaded connection with the valve shell (3), the inner end of the plug (1) is in contact connection with the valve rod (2),

or the return spring (4) is set as a circular column spring, one end head of the return spring (4) is set to be in contact connection with the valve shell (3), the other end head of the return spring (4) is set to be in contact connection with the valve rod (2),

or, a step hole body (62) is arranged at the right end of a seat part (61) of the valve seat (6) and the left end of the seat part (61) is connected with the valve rod (2) in a sliding way, the left end of the seat part (61) is connected with the valve shell (3) in a contact way, the outer side surface part of the seat part (61) is connected with the valve body (5) in a contact way and the contraction part of the step hole body (62) is connected with the high-pressure spring (7) in an accommodating way, the expansion part of the step hole body (62) is connected with the compression screw sleeve (8) in an accommodating way and the seat part (61) is arranged to be a round tubular body, the step hole body (62) is arranged to,

or, a central hole part (82) is arranged at the left end of a sleeve part (81) of the pressing screw sleeve (8), the right end of the sleeve part (81) is in threaded connection with the valve rod (2), the outer side surface part of the sleeve part (81) is in connection with the valve seat (6), the central hole part (82) is in accommodation connection with the high-pressure spring (7), the sleeve part (81) is in a circular tubular body, and the central hole part (82) is in a circular hole shape,

or the high-pressure spring (7) is set to be a circular column spring, one end head of the high-pressure spring (7) is set to be in contact connection with the valve seat (6), and the other end head of the high-pressure spring (7) is set to be in contact connection with the pressing threaded sleeve (8).

7. A pilot operated check valve assembly for a hydraulic mount according to claim 5 wherein: the ejector rod (10) is a middle-shaped rod-shaped body, the flange part of the ejector rod (10) is connected with the valve sleeve (9) in a contact way, the left end of the ejector rod (10) is connected with the valve rod (2) in a contact way, the right end of the ejector rod (10) is connected with the pilot spring (11) in a contact way,

or the valve plug (12) is a screw rod with a blind hole body at the inner end, the valve plug (12) is in threaded connection with the valve body (5), the blind hole body of the valve plug (12) is respectively in threaded connection with the valve sleeve (9) and the pilot spring (11),

or the valve sleeve (9) is arranged into a tubular body with a Y-shaped through hole and a ninth hole channel body (99) is arranged on the valve sleeve (9), the ninth hole channel body (99) is arranged to be connected with the mandril (10) in a contact way and the left end of the valve sleeve (9) is arranged to be connected with the valve body (5), the right end of the valve sleeve (9) is arranged to be connected with the valve plug (12) and the Y-shaped through hole of the valve sleeve (9) is arranged to be connected with the mandril (10),

or the pilot spring (11) is set to be a circular column spring, one end head of the pilot spring (11) is set to be in contact type connection with the ejector rod (10), and the other end head of the pilot spring (11) is set to be in contact type connection with the valve plug (12).

8. A pilot operated check valve assembly for a hydraulic mount according to claim 5 wherein: the venting plug (13) is provided as a venting plug with a check ball and the venting plug (13) is provided in a threaded coupling with the valve body (5).

9. A pilot operated check valve arrangement for a hydraulic mount according to any one of claims 1 to 8 wherein: the valve body (5) and the plug (1), the valve rod (2), the valve casing (3), the reset spring (4), the valve seat (6), the high-pressure spring (7), the pressing threaded sleeve (8), the valve sleeve (9), the ejector rod (10), the pilot spring (11) and the valve plug (12) are distributed in a pilot unloading mode, and the center line of the plug (1), the center line of the valve rod (2), the center line of the valve casing (3), the center line of the reset spring (4), the center line of the valve seat (6), the center line of the high-pressure spring (7), the center line of the pressing threaded sleeve (8), the center line of the valve sleeve (9), the center line of the ejector rod (10), the center line of the pilot spring (11) and the center line of the valve plug (12) are arranged on the same straight line, one plug (1), one valve rod (2), one valve casing (3), one reset spring (4), one valve seat (6), A high pressure spring (7), a pressing screw sleeve (8), a valve sleeve (9), a push rod (10), a pilot spring (11) and a valve plug (12) are arranged to form a group of pilot unloading components and at least two groups of pilot unloading components are arranged in the valve body (5), a sleeve part (81) is arranged to be in threaded connection with the rod part (21), the sleeve part (81) is arranged to be in connection with a step hole body (62), a seat part (61) is arranged to be in connection with the rod part (21), the seat part (61) is arranged to be in contact connection with the valve cylinder part (31), a contact body (24) is arranged to be in contact connection with the push rod (10), the valve cylinder part (31) is arranged to be in connection with the block part (502), an annular flange body (34) is arranged to be in connection with the rod part (21), the step flange body (22) is arranged to be in connection with the valve cylinder part (31), and a gap between the valve cylinder, Sealing rings are respectively arranged between the annular flange body (34) and the rod part (21), between the step body (22) and the valve cylinder part (31), between the seat part (61) and the rod part (21), between the valve sleeve (9) and the valve body (5), between the valve sleeve (9) and the valve plug (12), between the valve sleeve (9) and the ejector rod (10) and between the valve plug (12) and the block part (502).

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