CN201843881U - Hinged bolt with pilot-operated reducing valve - Google Patents
Hinged bolt with pilot-operated reducing valve Download PDFInfo
- Publication number
- CN201843881U CN201843881U CN2010205066271U CN201020506627U CN201843881U CN 201843881 U CN201843881 U CN 201843881U CN 2010205066271 U CN2010205066271 U CN 2010205066271U CN 201020506627 U CN201020506627 U CN 201020506627U CN 201843881 U CN201843881 U CN 201843881U
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- Prior art keywords
- bolt
- guide
- spring
- screw rod
- cavity
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- Expired - Lifetime
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Abstract
The utility model discloses a hinged bolt with a pilot-operated reducing valve, which comprises a bolt head (1) and a screw rod (2), wherein the screw rod is internally provided with a central channel (3); a transverse channel (4) is arranged on the screw rod and is communicated with the central channel (3); the hinged bolt is characterized in that the bolt head is internally provided with a mounting channel communicated with the central channel; the hinged bolt also comprises a pilot valve body (5), a pilot valve core (6), a spring I (7), a spring II (8), a pressure regulating piston (9), a pressure regulating screw rod (10) and a main valve core (11); the bolt is provided with a liquid discharge channel (13) which is communicated with a cavity I (12); and a valve port arranged at the lower end of the pilot valve body (5) is jacked by the pilot valve core (6) under the action of the spring I (7). The hinged bolt with the pilot-operated reducing valve has the advantages that the pressure of a hydraulic circuit is effectively reduced, the mounting space is saved, and the reliability is high; moreover, the hinged bolt is convenient to install and has low failure rate.
Description
Technical field
The utility model relates to bolt field, is a kind of hinge bolt that has piloted reducer specifically.
Background technique
The hinge bolt of prior art generally comprises bolt head and screw rod, is provided with central passage in the described screw rod, and is provided with crosspassage communicates with central passage on the screw rod wall.The hinge bolt purposes is comparatively extensive, be mainly used in Hydraulic Field, as be used in hydraulic block on the oil hydraulic circuit, oil hydraulic pump import and export etc., the crosspassage outlet port generally communicates with hydraulic system, and in the middle of these field using processs, hinge bolt only plays the fluid pressure that hinged effect can not change hydraulic system inside, also can not play the effect of decompression certainly to system.So usually reduction valve need be installed separately on oil hydraulic circuit, associated components such as one-way valve reduce pressure to hydraulic system with realization.
Existing hinge bolt in oil hydraulic circuit only as coupling, all inoperative to fluid pressure, flow, the flow direction etc., control or change pressure, flow, the flow direction of liquid etc., all various types of valves and other component to be installed in the loop, simultaneously controlled liquid be linked up by the hydraulic unit or the actuator of various terminal (comprising hinge bolt) with other.
In the middle of prior art, reduction valve separates with hinge bolt, because the space of assembling is limited, reduction valve is installed has separately been brought difficulty not only for the assembling of installation and part, component have been increased, operation also bothers relatively, and rate of fault also can raise, the reliability variation, be unfavorable for maintenance, brought inconvenience for the reasonable use of device, and be installed separately the overall number of components and the weight that make in the oil hydraulic circuit and all will increase, influenced using scope and working life, reached reliability.
The model utility content
The technical problems to be solved in the utility model is, provides a kind of and can reduce pressure, save installing space, the hinge bolt that has piloted reducer that reliability is high to oil hydraulic circuit.
Technical solution of the present utility model is, a kind of hinge bolt that has piloted reducer of following structure is provided, and comprises bolt head and screw rod, is provided with central passage in the described screw rod, and is provided with crosspassage communicates with central passage on screw rod.
Be provided with the installation passage that communicates with central passage in the described bolt head, described hinge bolt also comprises guide's valve body, guide's spool, spring I, spring II, relief piston, screw press and main valve plug, described guide's valve body is installed in the bolt, is provided with cavity I in guide's valve body; Described relief piston is arranged in the cavity I, and described spring I one end is fixed on the relief piston, and the other end is fixed on guide's spool; Described screw press screws in cavity I and withstands relief piston; Be provided with the drainage passage on bolt, described drainage passage communicates with cavity I; Described guide's spool withstands the valve port that is positioned at guide's valve body lower end under the effect of spring I; Described main valve plug 11 is installed in the central passage 3, be provided with the main valve plug passage that can communicate in the main valve plug 11 with crosspassage, form cavity II between main valve plug and the guide's valve body, the end of described spring II is fixed on guide's valve body, and the other end is fixed on the main valve plug; Be provided with feed pathway in the described screw rod, described feed pathway communicates with central passage.
Adopt above structure, the utility model compared with prior art has the following advantages: adopt the utility model structure, piloted reducer is housed in hinge bolt, the function that makes the utility model collection reduction valve and hinge bolt is an one, the crosspassage outlet is liquid outlet, during normal the use, the hydraulic pressure of liquid outlet is that interior hydraulic pressure of cavity II and the setting power of spring I balance each other, when the hydraulic pressure of liquid outlet is higher than the setting power of spring I, guide's spool is opened, move on the main valve plug simultaneously, and the area that passes through between crosspassage and the feed pathway is reduced until closing, to realize the effect of decompression and voltage stabilizing.The utility model can reduce pressure, save installing space, reliability height oil hydraulic circuit effectively, and is convenient to install, and rate of fault is low.
As improvement, also be provided with the remote control mouth on the described bolt, described remote control mouth is communicated with cavity II.Like this, can realize the remote control of reducing pressure by the remote control mouth is opened,, make the wider practicability that has more of the utility model using scope.
As further improvement, in the described central passage one-way valve is housed, described one-way valve comprises spool and spring III, one-way valve is positioned at the below of main valve plug.Like this, when the liquid reverse direction operation was worked, a part of liquid came out from feed pathway, and some can be opened one-way valve and come out from central passage, has increased the circulation area of reverse flow.
Description of drawings
Accompanying drawing is the structural representation that the utility model has the hinge bolt of piloted reducer.
As shown in the figure 1, bolt head, 2, screw rod, 3, central passage, 4, crosspassage, 5, guide's valve body, 6, guide's spool, 7, spring I, 8, spring II, 9, relief piston, 10, screw press, 11, main valve plug, 12, cavity I, 13, the drainage passage, 14 damping holes, 15, main valve plug passage, 16, cavity II, 17, feed pathway, 18 remote control mouths, 19, nonreturn valve core, 20, spring III.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
The hinge bolt that has piloted reducer of the present utility model comprises bolt head 1 and screw rod 2, is provided with central passage 3 in the described screw rod, and is provided with crosspassage 4 can communicates with central passage 3 on screw rod.
Be provided with the installation passage that communicates with central passage in the described bolt head, described hinge bolt also comprises guide's valve body 5, guide's spool 6, spring I7, spring II8, relief piston 9, screw press 10 and main valve plug 11, described guide's valve body 5 is installed in the bolt head 1, is provided with cavity I12 in guide's valve body 5; Described relief piston 9 is arranged in the cavity I12, and described spring I7 one end is fixed on the relief piston 9, and the other end is fixed on guide's spool 6; Described screw press 10 screws in cavity I12 and withstands relief piston 9; Be provided with drainage passage 13 on bolt, described drainage passage 13 communicates with cavity I12; Described guide's spool 6 withstands the valve port that is positioned at guide's valve body 5 lower ends under the effect of spring I7; Described main valve plug 11 is installed in the central passage 3, be provided with the main valve plug passage 15 that can communicate in the main valve plug 11 with crosspassage 4, form cavity II16 between main valve plug 11 and the guide's valve body 5, the end of described spring II8 is fixed on guide's valve body 5, and the other end is fixed on the main valve plug 11; Be provided with feed pathway 17 in the described screw rod 2.
Also be provided with remote control mouth 18 on the described bolt, described remote control mouth 18 is communicated with cavity II16.
In the described central passage 3 one-way valve is housed, described one-way valve comprises nonreturn valve core 19 and spring III20, and one-way valve is positioned at the below of main valve plug 11.
Claims (3)
1. hinge bolt that has piloted reducer, comprise bolt head (1) and screw rod (2), be provided with central passage (3) in the described screw rod, and being provided with crosspassage (4) on screw rod communicates with central passage (3), it is characterized in that: be provided with the installation passage that communicates with central passage in the described bolt head, described hinge bolt also comprises guide's valve body (5), guide's spool (6), spring I (7), spring II (8), relief piston (9), screw press (10) and main valve plug (11), described guide's valve body (5) is installed in the bolt head (1), is provided with cavity I (12) in guide's valve body (5); Described relief piston (9) is arranged in the cavity I (12), and described spring I (7) one ends are fixed on the relief piston (9), and the other end is fixed on guide's spool (6); Described screw press (10) screws in cavity I (12) and withstands relief piston (9); Be provided with drainage passage (13) on bolt, described drainage passage (13) communicates with cavity I (12); Described guide's spool (6) withstands the valve port that is positioned at guide's valve body (5) lower end under the effect of spring I (7); Described main valve plug (11) is installed in the central passage (3), be provided with the main valve plug passage (15) that can communicate in the main valve plug (11) with crosspassage (4), form cavity II (16) between main valve plug (11) and the guide's valve body (5), the end of described spring II (8) is fixed on guide's valve body (5), and the other end is fixed on the main valve plug (11); Be provided with feed pathway (17) in the described screw rod (2), described feed pathway (17) communicates with central passage (3).
2. the hinge bolt that has piloted reducer according to claim 1 is characterized in that: also be provided with remote control mouth (18) on the described bolt, described remote control mouth (18) is communicated with cavity II (16).
3. the hinge bolt that has piloted reducer according to claim 1, it is characterized in that: described central passage is equipped with one-way valve in (3), described one-way valve comprises nonreturn valve core (19) and spring III (20), and one-way valve is positioned at the below of main valve plug (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205066271U CN201843881U (en) | 2010-08-22 | 2010-08-22 | Hinged bolt with pilot-operated reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205066271U CN201843881U (en) | 2010-08-22 | 2010-08-22 | Hinged bolt with pilot-operated reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201843881U true CN201843881U (en) | 2011-05-25 |
Family
ID=44038773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205066271U Expired - Lifetime CN201843881U (en) | 2010-08-22 | 2010-08-22 | Hinged bolt with pilot-operated reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201843881U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943202A (en) * | 2010-08-22 | 2011-01-12 | 林友根 | Link bolt with pilot type reducing valve |
| CN111043127A (en) * | 2019-12-12 | 2020-04-21 | 绍兴山耐高压紧固件有限公司 | Bolt fastener with pressure relief mechanism |
-
2010
- 2010-08-22 CN CN2010205066271U patent/CN201843881U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943202A (en) * | 2010-08-22 | 2011-01-12 | 林友根 | Link bolt with pilot type reducing valve |
| CN101943202B (en) * | 2010-08-22 | 2012-03-14 | 林友根 | Link bolt with pilot type reducing valve |
| CN111043127A (en) * | 2019-12-12 | 2020-04-21 | 绍兴山耐高压紧固件有限公司 | Bolt fastener with pressure relief mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110525 Effective date of abandoning: 20120314 |