CN201810603U - Multi-purpose speed control pneumatic lift valve for dump truck - Google Patents
Multi-purpose speed control pneumatic lift valve for dump truck Download PDFInfo
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- CN201810603U CN201810603U CN2010205762704U CN201020576270U CN201810603U CN 201810603 U CN201810603 U CN 201810603U CN 2010205762704 U CN2010205762704 U CN 2010205762704U CN 201020576270 U CN201020576270 U CN 201020576270U CN 201810603 U CN201810603 U CN 201810603U
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Abstract
The utility model relates to a multi-purpose speed control pneumatic lift valve for a dump truck. A slowly descending piston (4) is arranged in a gas chamber (5), a screw (L) of the slowly descending piston (4) extending out of a gas chamber end cover (3) is provided with an adjusting nut (2), and an ascending air hole (K1) and a slowly descending air hole (K3) are arranged on a cylindrical wall surface of the gas chamber (5) in the radial direction. The outer ends of an overflow spring and a spring seat (13) in an overflow chamber (Y) are provided with an overflow adjusting screw plug (7) and a connecting threaded sleeve (16). The bottom surface and the side surface of a valve body (10) are respectively provided with a working oil hole (A), one working oil hole (A) is connected with a working oil pipe, and the other working oil hole (A) is sealed by an oil hole screw plug (14). The stroke of the slowly descending piston (4) can be changed through adjusting the adjusting nut (2) according to the slow descending needs of the container of the dump truck, and then the descending speed of the container of the dump truck can be determined. The pressure of an overflow valve can be adjusted conveniently through removing a screw cover (18) and rotating an overflow adjusting screw plug (17) with a hexagonal wrench. The multi-purpose speed control pneumatic lift valve for the dump truck has the function of adjusting the speed and descending slowly, can be separately connected with a hydraulic oil channel, and can also be directly connected with an oil tank. Moreover, the multi-purpose speed control pneumatic lift valve for the dump truck has wide range of application, good supporting performance and high working efficiency.
Description
Technical field
The utility model relates to the dumping car hydraulic system, relates in particular to the air control lifting valve.
Background technique
The air control lifting valve of present domestic dumping car hydraulic system, spool is set in the valve body, valve core upper sleeve dress Returnning spring, spring housing, spring seat, end installing piston, at axial restraint, be provided with relief valve, the spring seat at interior dress overflow spool, overflow spring and two ends on the valve body with nut simultaneously, by 6 screw cappings, spring seat is encapsulated in the spill cavity.Gas compartment is sealed by the air chamber end cap, and last air rising hole axially is opened in gas compartment end cap center, and the decline pore is arranged on the cylindrical radially wall of gas compartment.Though this structure can be controlled the lifting and the decline of oil cylinder by hydraulic circuit, function is not fallen slowly owing to do not possess, and use is restricted.The pressure of adjusting the relief valve on the valve body need unload 6 screws, takes off capping, could adjust the position of spring seat and overflow spring, and then with 6 screws capping be fixed, and loading and unloading are wasted time and energy, and are very inconvenient, cumbersome.
Summary of the invention
The purpose of this utility model, just provide a kind of possess function is fallen slowly, the air control lifting valve of reliable performance, easy to operate, variable-speed, relief valve are easy to adjust, and can select the mounting point of air control lifting valve as required, adaptability is strong, high working efficiency.
Task of the present utility model is finished like this: improve on the basis of existing air control lifting valve, design a kind of dumping car multipurpose speed governing air control lifting valve, supporting with the dumping car hydraulic system, be provided with in air chamber end cap in gas compartment and the air chamber inner chamber between the valve core piston and fall piston slowly, slowly falling piston stretches out on the screw rod of air chamber end cap outside adjusting nut is set, the outside is by end face swivel nut big envelope, last air rising hole and slow sending down abnormally ascending aperture are on the cylindrical body wall that is opened in gas compartment, be communicated with respectively and fall the control tracheae slowly and rise the control tracheae, overflow spring on the valve body in the spill cavity is provided with overflow with the spring seat outer end and regulates plug screw and be connected swivel nut, and the outside is protected by blind nut suit envelope.Slowly falling middle of piston periphery suit seal ring cooperates with the inwall of gas compartment, the inner boss that has big-diameter blind hole for the centre, the outer end is the screw rod of band seal groove, the suit seal ring cooperates with the end cap mesopore, air chamber end cap outside is stretched out in the screw rod outer end, equipped adjusting nut is in the outside is encapsulated in adjusting nut by swivel nut.Slow sending down abnormally ascending hole and last air rising hole are radial direction through hole, be opened in side by side on the cylindrical body wall of gas compartment with the decline pore, slow sending down abnormally ascending hole is communicated with the air chamber inner chamber that falls slowly between piston and the air chamber end cap, last air rising hole connecting valve core piston and fall air chamber inner chamber between the piston slowly.Overflow is regulated the inner boss pressure of plug screw and is touched the outer end spring seat, and cylindrical body has outside thread, and inner segment is equipped with being connected the swivel nut inner bolt hole, and outer section is equipped with the blind nut inner bolt hole, and plug screw is regulated in the interior suit overflow of blind nut, is encapsulated in to connect on the swivel nut.A work oilhole is respectively offered in the bottom surface of valve body and side, and one of them oilhole is communicated with working tubing, the oilhole screw plug shutoff of another oilhole.During use, the utility model can be arranged on separately and connect oil circuit in the hydraulic system, also can directly be attached on the fuel tank, spill port is directly linked to each other with fuel tank, save oil pipe and device space.When needing the oil cylinder lifting, pull the handle lifting, the control tracheae that rises is by last air rising hole air feed in gas compartment, promoting valve core piston drive spool moves right, the oil inlet hole of opening on the valve body is connected with the work oilhole, and hydraulic oil is pressed into oil cylinder by oil pipe, the lifting that makes progress of promotion oil cylinder piston.Pull handle during decline and descend, the control tracheae that descends is by decline pore air feed in gas compartment, the air inlet of valve core piston right side, promote valve core piston and drive spool to left movement, be communicated with spill port and work oilhole on the valve body, hydraulic oil backflow fuel tank in the oil cylinder, oil cylinder descends.In the time of need falling slowly, pulling handle simultaneously falls slowly, descend the control tracheae by the decline pore, fall the control tracheae by slow sending down abnormally ascending hole air feed in gas compartment simultaneously slowly, and valve core piston falls piston slowly and moves right to left movement, the compression intermediate gas, the retardance valve core piston drives the stroke that spool moves to left, and makes the work oilhole be communicated with the reduced cross-sectional area of spill port, and the hydraulic oil back-flow velocity slows down, the oil cylinder rate of descent slows down, and capacity of the tipping body is realized falling slowly.According to the different reduction of speed requirements of various capacity of the tipping bodys, by adjusting the position of adjusting nut, change the stroke space that falls piston slowly, can determine the capacity of the tipping body rate of descent, can select arbitrarily in adjustment range.It is also very convenient to adjust relief valve pressure, as long as take off blind nut, rotates overflow with the hexagon wrench and regulates plug screw, just can adjust overflow spring pressure as required.
Manufacture experimently, test according to above-mentioned design proposal, the proof the utility model reasonable in design, compact structure, for the dumping car hydraulic system supporting, possess variable-speed and fall function slowly, reliable performance can satisfy the needs of different mounting points on dumping car, and relief valve pressure is adjusted easy to operate, adaptability is strong, matching performance is good, and high working efficiency has reached predetermined purpose preferably.
Description of drawings
Fig. 1 is the section of structure of facing of the present utility model;
Fig. 2 is the section of structure of air chamber end cap 3 of the present utility model;
Fig. 3 is the section of structure that falls piston 4 slowly of the present utility model;
Fig. 4 is the section of structure of connection swivel nut 16 of the present utility model;
Fig. 5 is the section of structure that plug screw 17 is regulated in overflow of the present utility model.
Among the figure, 1-end face swivel nut, 2-adjusting nut, 3-air chamber end cap, piston falls in 4-slowly, 5-gas compartment, 6-valve core piston, 7-spring housing, the 8-spool, 9-valve core spring, 10-valve body, 11-overflow spool, 12-steel ball, 13-spring seat, 14-oilhole screw plug, 15-overflow spring, 16-connects swivel nut, plug screw, 18-blind nut, 19-valve body bonnet are regulated in the 17-overflow; P-oil inlet hole, T-spill port, Y-spill cavity, the A-oilhole of working, the last air rising hole of K1-, K2-decline pore, the slow sending down abnormally ascending of K3-hole, Q-air chamber inner chamber, H-seal ring, F-screw boss, C-seal groove, K-end cap mesopore, the L-screw rod, D-blind hole, J-connecting thread, W-step hole, E-hexagon wrench hole.
Embodiment
Below in conjunction with accompanying drawing mode of execution of the present utility model is described further.
Consult Fig. 1, on the architecture basics of existing air control lifting valve, improve, in the air chamber inner chamber Q of left end gas compartment 5, be provided with and fall piston 4 slowly, between position upper valve core piston 6 and the air chamber end cap 3, slowly fall and have seal groove C installing seal ring H on piston 4 peripheries, cooperate with gas compartment 5 inwalls.Slowly fall the middle big-diameter blind hole D that has of inner boss of piston 4, outer end screw rod L stretches out the end cap mesopore K outside of air chamber end cap 3, equipped adjusting nut 2, and outside suit end face swivel nut 1 is encapsulated in adjusting nut 2 on gas compartment 5 end faces.Have slow sending down abnormally ascending hole K3 radially, last air rising hole K1 on gas compartment 5 cylndrical surface, hole K2 is arranged side by side with fast sending down abnormally ascending, connects control tracheae separately respectively.Respectively offer a work oilhole A on the horizontal plane of valve body and vertical side, determine that according to the mounting point one of them oilhole connects oil pipe, another oilhole is with 14 shutoff of oilhole screw plug.During work, pull Joystick and open air rising hole K1, gas input gas compartment 5, promote valve core piston 6 from the left side and move right, promote spool 8 and move to the right, be communicated with oil inlet hole P and work oilhole A, hydraulic oil enters valve body 10 from oil inlet hole P, by oil pipe input service oil cylinder, operating cylinder is risen through work oilhole A, lift capacity of the tipping body.When needing to descend, pull Joystick and open fast sending down abnormally ascending hole K2, gas input gas compartment 7, promote valve core piston 6 to left movement from the right side, drive spool 8 and move left, be communicated with work oilhole A and spill port T, hydraulic oil refluxes through work oilhole A from operating cylinder, T flows back to fuel tank by spill port, and the operating cylinder decompression descends.The unlikely decline of capacity of the tipping body is too fast to cause damage in order to make; when opening decline pore K2, open slow sending down abnormally ascending hole K3; make gas promote to fall piston 4 slowly by left side input gas compartment 5 simultaneously and move right, compression right side gas, retardance valve core piston 6 is shifting movement left; the stroke that spool 8 is moved to the left shortens; the opening section of spill port T is long-pending to be dwindled, and the hydraulic oil back-flow velocity is slowed down, and the operating cylinder rate of descent is slowed down thereupon; thereby make capacity of the tipping body realize falling slowly, protection dumping car safety.Adjust the position that the adjusting nut 2 on the piston 4 screw rod L falls in gas compartment 5 exterior edge faces slowly, can change and fall the translation stroke of piston 4 in gas compartment 5 slowly, stroke is long more, and the rate of descent of operating cylinder is slow more.Can according to capacity of the tipping body requirement falls slowly, adjust the position of adjusting nut 2.
In addition, overflow spring 15 back (right side) ends in the spill cavity Y of the top of valve body 10 are provided with the 16 suit overflows of connection swivel nut and regulate plug screw 17, and roof pressure is on spring seat 13 and overflow spring 15, outer end (right-hand member) is regulated overflow in plug screw 17 is sleeved on by blind nut 18, is encapsulated on the end face that connects swivel nut 16.If will change the roof pressure intensity of overflow spring 15, can take off blind nut 18, insert in the hexagon wrench hole E that overflow regulates plug screw 17 exterior edge faces with the hexagon wrench and be rotated, by adjusting the degree of tightness of overflow spring 15, adjust the intensity and the pressure of relief valve, convenient, fast, effective.
Consult Fig. 2, have seal groove C on the periphery of air chamber end cap 3, but the suit seal ring is installed in gas compartment 5 inner ends, stretching out the outer screw boss F of gas compartment 5 end faces can be equipped with end face swivel nut 1.Air chamber end cap 3 centers have end cap mesopore K, can cooperate suit with the screw rod L that falls piston 4 slowly.
Consult Fig. 3, gas compartment 5 is set up between air chamber end cap 3 and valve core piston 6 and is fallen piston 4 slowly, falls slowly on the periphery of piston 4 and offers seal groove C, can install seal ring H and cooperate with gas compartment 5 inner hole walls.Right-hand member boss center has big-diameter blind hole D, can hold the end nut of valve core piston 6.Left end screw rod L stretches out the end cap mesopore K outside of air chamber end cap 3, and is supporting with adjusting nut 2.
Consult Fig. 4, Fig. 5, connect on the swivel nut 16 inner peripheries and have connecting thread J, the center has step hole W, right-hand member is a screw, regulate plug screw 17 with overflow and cooperate suit, overflow is regulated center, plug screw 17 exterior edge face and is had hexagon wrench hole E, adjusts so that the hexagon wrench inserts to rotate.
The utility model can be connected installing with oil circuit in the dumping car hydraulic system, the downward connection of spill port T directly is installed on the fuel tank, makes more compact structure, and application area is more extensive.Two work oilhole A divide side and the bottom surface that is located at valve body 10, select for use one of them to be communicated with working tubing according to the mounting point during work, and another installs and uses flexible, convenient with 14 shutoff of oilhole screw plug.The utility model can satisfy the requirement of the different slow reduction of speed degree of various capacity of the tipping bodys, and matching performance is good, and highly versatile is fit to the hydraulic system of all kinds of dumping cars such as sinciput formula dumping car, abdomen act formula dumping car, midsplit type dumping car, side dump dumping car supporting.
Claims (5)
1. dumping car multipurpose speed governing air control lifting valve, supporting with the dumping car hydraulic system, it is characterized in that being provided with in air chamber end cap (3) in gas compartment (5) and the air chamber inner chamber (Q) between the valve core piston (6) and fall piston (4) slowly, slowly falling piston (4) stretches out on the screw rod (L) of air chamber end cap (3) outside adjusting nut (2) is set, the outside is by end face swivel nut (1) big envelope, last air rising hole (K1) and slow sending down abnormally ascending hole (K3) radially are opened on the cylindrical body wall of gas compartment (5), be communicated with respectively and fall the control tracheae slowly and rise the control tracheae, the overflow spring (15) that valve body (10) is gone up in the spill cavity (Y) is provided with overflow adjusting plug screw (17) and is connected swivel nut (16) with spring seat (13) outer end, and the outside is protected by blind nut (18) suit envelope.
2. according to the described dumping car multipurpose of claim 1 speed governing air control lifting valve, it is characterized in that the said middle part periphery suit seal ring (H) that falls piston (4) slowly cooperates with the inwall of gas compartment (5), the inner boss that has big-diameter blind hole (D) for the centre, the outer end is the screw rod (L) of band seal groove (C), the suit seal ring cooperates with end cap mesopore (K), air chamber end cap (3) outside is stretched out in screw rod (L) outer end, equipped adjusting nut (2) is in the outside is encapsulated in adjusting nut (2) by swivel nut (1).
3. according to the described dumping car multipurpose of claim 1 speed governing air control lifting valve, it is characterized in that said slow sending down abnormally ascending hole (K3) and last air rising hole (K1) are radial direction through hole, be opened in side by side on the cylindrical body wall of gas compartment (5) with decline pore (K2), slow sending down abnormally ascending hole (K3) is communicated with the air chamber inner chamber (Q) that falls slowly between piston (4) and the air chamber end cap (3), last air rising hole (K1) connection valve core piston (6) and fall air chamber inner chamber (Q) between the piston (4) slowly.
4. according to the described dumping car multipurpose of claim 1 speed governing air control lifting valve, the inner boss pressure that it is characterized in that said overflow adjusting plug screw (17) is touched outer end spring seat (13), cylindrical body has outside thread, inner segment is with to be connected swivel nut (16) inner bolt hole equipped, outer section is equipped with blind nut (18) inner bolt hole, plug screw (17) is regulated in the interior suit overflow of blind nut (18), is encapsulated in to connect on the swivel nut (16).
5. according to the described dumping car multipurpose of claim 1 speed governing air control lifting valve, a work oilhole (A) is respectively offered in the bottom surface and the side that it is characterized in that said valve body (10), one of them oilhole is communicated with working tubing, oilhole screw plug (14) shutoff of another oilhole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205762704U CN201810603U (en) | 2010-10-18 | 2010-10-18 | Multi-purpose speed control pneumatic lift valve for dump truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205762704U CN201810603U (en) | 2010-10-18 | 2010-10-18 | Multi-purpose speed control pneumatic lift valve for dump truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201810603U true CN201810603U (en) | 2011-04-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205762704U Expired - Fee Related CN201810603U (en) | 2010-10-18 | 2010-10-18 | Multi-purpose speed control pneumatic lift valve for dump truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201810603U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103161779A (en) * | 2011-12-15 | 2013-06-19 | 阜新北鑫星液压有限公司 | Full-system protective speed-regulating pneumatic operated reversing valve |
-
2010
- 2010-10-18 CN CN2010205762704U patent/CN201810603U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103161779A (en) * | 2011-12-15 | 2013-06-19 | 阜新北鑫星液压有限公司 | Full-system protective speed-regulating pneumatic operated reversing valve |
| CN103161779B (en) * | 2011-12-15 | 2016-06-29 | 阜新北鑫星液压有限公司 | Total system protection speed-regulating pneumatic reversing valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110427 Termination date: 20121018 |