CN107964998B - Multifunctional pilot-operated pedal valve mechanism and using method thereof - Google Patents
Multifunctional pilot-operated pedal valve mechanism and using method thereof Download PDFInfo
- Publication number
- CN107964998B CN107964998B CN201810018506.3A CN201810018506A CN107964998B CN 107964998 B CN107964998 B CN 107964998B CN 201810018506 A CN201810018506 A CN 201810018506A CN 107964998 B CN107964998 B CN 107964998B
- Authority
- CN
- China
- Prior art keywords
- pedal
- sliding
- pilot
- valve
- lock pin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/2004—Control mechanisms, e.g. control levers
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
- E02F9/2267—Valves or distributors
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Control Devices (AREA)
- Operation Control Of Excavators (AREA)
Abstract
The invention relates to a multifunctional pilot-operated pedal valve mechanism and a using method thereof, which comprises a bidirectional pilot-operated valve, a pedal plate, a fixed bracket, a sliding bracket and a lock pin, wherein the bidirectional pilot-operated valve is assembled on a large bottom plate of a cab, the pedal plate is assembled on the bidirectional pilot-operated valve, an E-shaped sliding groove is arranged above the fixed bracket, an opening of the E-shaped sliding groove faces downwards, a I-shaped sliding groove is arranged below the fixed bracket, the sliding bracket is arranged between the bidirectional pilot-operated valve and the fixed bracket, the top of the sliding bracket is provided with an eccentric groove, the middle of the sliding bracket is provided with a vertical blind hole sliding groove, the bottom of the sliding bracket is provided with a threaded hole, the lock pin is in a T shape, one end of a big head is a sliding block, and the other end of the big head is a long round rod. The multifunctional pilot operated pedal valve mechanism and the use method thereof provided by the invention have the advantages of simple structure, low cost, convenience in operation and high reliability, realize the functions of fixing a pedal, a one-way control switch and a two-way control switch by adjusting the position of the lock pin, meet the operation modes of most additional machines and tools, and improve the selectivity of the additional machines and tools and the quick switching of the operation modes.
Description
Technical Field
The invention belongs to the technical field of engineering machinery, and particularly relates to a multifunctional pilot operated pedal valve mechanism and a using method thereof.
Background
Engineering machine tool, especially excavator can often add various machines in order to satisfy the demand of different operating modes, and various machines need different operation modes, and the tradition method is that every machines correspond an operating switch, but engineering machine tool cab space just very compact originally, and the overall arrangement is more difficult, and control circuit is also more, and later stage driver need know the function that every switch corresponds earlier, and adjacent switch still leads to the accident because of the maloperation easily moreover, so no matter make, use or later stage maintenance all inconvenient.
Disclosure of Invention
The invention aims to provide a multifunctional pilot operated pedal valve mechanism and a using method thereof, which have the characteristics of simple structure, low cost, convenient operation and high reliability, can realize three functions of fixing a pedal, a one-way control switch and a two-way control switch by adjusting the position of a lock pin, and meet the operation mode of most additional machines and tools.
In order to realize the purpose, the invention adopts the technical scheme that:
a multifunctional pilot operated pedal valve mechanism comprises a bidirectional pilot operated valve, a pedal plate, a fixed support, a sliding support and a lock pin, wherein the bidirectional pilot operated valve is assembled on a large bottom plate of a cab through a bolt and is generally positioned at the position where the right foot of a driver is placed, the pedal plate is assembled on the bidirectional pilot operated valve through a bolt, the driver can step forward and backward by using the foot, the fixed support is positioned on one side of the bidirectional pilot operated valve, the sliding support is arranged between the fixed support and the bidirectional pilot operated valve, an E-shaped sliding groove and a linear sliding groove are formed in the fixed support, the lock pin penetrates through the sliding support and slides along the E-shaped sliding groove, and the sliding support slides forward and backward along the linear sliding groove.
Further, it has four pilot oil mouths to open on the two-way pilot control valve, including oil inlet P mouth, working oil mouth A mouth, working oil mouth B mouth and oil return port T mouth, two three-way valves respectively have at the front and back both ends of two-way pilot control valve, the intercommunication of oil inlet P mouth and working oil mouth A mouth is controlled to the three-way valve through the front end, the intercommunication of oil inlet P mouth and working oil mouth B mouth is controlled to the three-way valve through the rear end, can open or close through the valve core that the seesaw top clamp plate drove front and back correspondence around driving, realize different working oil mouths oil return, thereby the different actions of control main valve core, the work of different oil circuits of drive.
Furthermore, a first stop block and a second stop block are welded on one side of the pedal, and the first stop block and the second stop block are respectively positioned above the front end and the rear end of the bidirectional pilot control valve and have a certain distance therebetween.
Furthermore, the fixed support is a flat plate and is fixed on a large cab bottom plate on the right side of the two-way pilot control valve, an E-shaped sliding groove is formed above the fixed support, the opening of the E-shaped sliding groove faces downwards, a transverse I-shaped sliding groove is formed below the fixed support, and one end of the long round locking pin rod sinks into the E-shaped sliding groove and slides in the E-shaped sliding groove to shift or limit the position.
Furthermore, the sliding support is a flat plate, the sliding support is installed between the two-way pilot control valve and the fixed support and is tightly attached to the fixed support, an eccentric groove is formed in the top of the sliding support, a stop block arranged on the pedal plate at a specific position is cut into the eccentric groove, a vertical blind hole sliding groove is formed in the center of the sliding support, one end of a lock pin is sunk into the blind hole to slide, a threaded hole is formed in the bottom of the sliding support, and a screw penetrates through the linear sliding groove in the fixed support and then is screwed into the threaded hole to limit the freedom degree of the sliding support in the left-right and up-down directions so that the sliding support can only slide back and forth.
Furthermore, the lock pin is T-shaped, one end of a big end of the lock pin is a sliding block and is sunk into a blind hole sliding groove of the sliding support to slide up and down in the blind hole sliding groove and is used for adjusting the front and back positions of the sliding support when sliding left and right, the other end of the lock pin is a long round rod which penetrates through an E-shaped sliding groove in the fixed support and is suspended for a certain distance, and the long round rod of the lock pin slides and shifts or is positioned in the E-shaped sliding groove.
Furthermore, the front end and the rear end of the two-way pilot control valve are provided with mounting holes for connecting a large bottom plate of a cab through bolts, the top of the two-way pilot control valve is provided with two threaded holes, the bottom of the pedal plate is provided with bolt mounting holes matched with the threaded holes at the top of the two-way pilot control valve, and the pedal plate is assembled on the two-way pilot control valve through bolts.
Furthermore, one end of the long round rod penetrates through an E-shaped sliding groove in the fixed support, and the long round rod is clamped into a clamping groove of the E-shaped sliding groove in the fixed support under the self-gravity action of the locking pin when no external force is applied, so that all degrees of freedom of the sliding support are limited.
Furthermore, when the lock pin is positioned in the clamping groove in the middle of the E-shaped sliding groove, the sliding support supports the first stop block and the second stop block of the pedal plate, the pedal plate cannot tilt back and forth and is only equivalent to a support, and the pedal plate can be safely trodden;
when the lock pin moves to the foremost end, the eccentric groove at the top of the sliding support is just positioned below the first stop block at the front end of the pedal, when the pedal is stepped forward, the first stop block slides into the eccentric groove, the pedal can tilt forward, so that the valve core at the front end of the bidirectional pedal valve is opened, the second stop block at the rear end of the pedal is still supported by the sliding support and cannot be stepped backward, only single pipeline communication can be realized at the moment, and one action of the machine tool is controlled;
when the lock pin moves to the rearmost end, the eccentric groove of the sliding support is positioned above the second stop block at the rear end of the pedal, the first stop block at the front end exceeds the front edge of the stop block, the pedal can be stepped forwards and backwards, a corresponding pilot hydraulic pipeline is connected, and two actions of the machine tool are controlled.
Compared with the prior art, the invention has the following advantages:
the invention discloses a multifunctional pilot operated pedal valve mechanism and a using method thereof, and the multifunctional pilot operated pedal valve mechanism comprises a bidirectional pilot operated valve, a pedal plate, a fixed support, a sliding support and a lock pin, wherein the bidirectional pilot operated valve is assembled on a large bottom plate of a cab through a bolt and is generally positioned at the position where the right foot of a driver is placed, the pedal plate is assembled on the bidirectional pilot operated valve, the driver can step on the bidirectional pilot operated valve by using the foot, an E-shaped chute is arranged above the fixed support, the opening of the E-shaped chute is downward, a I-shaped chute is arranged below the fixed support, the sliding support is arranged between the bidirectional pilot operated valve and the fixed support, the top of the sliding support is provided with an eccentric groove, the middle of the sliding support is provided with a vertical blind hole chute, the bottom of the sliding support is provided with a threaded hole, the lock pin is T-shaped, one end of the big end is provided with a slide block, and the middle of the big end is provided with a long round bar. The multifunctional pilot operated pedal valve mechanism and the use method thereof have the characteristics of simple structure, low cost, convenient operation and high reliability, three functions of a fixed pedal, a one-way control switch and a two-way control switch can be realized by adjusting the position of the lock pin, the operation modes of most additional machines and tools are met, and the selectivity of the additional machines and tools and the quick switching of the operation modes are greatly improved.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a schematic diagram of the construction of the bi-directional pilot operated valve of the present invention;
FIG. 3 is a schematic diagram of the operation of the bi-directional pilot operated valve of the present invention;
FIG. 4 is a schematic view of the footrest of the present invention;
FIG. 5 is a schematic structural view of a fixing bracket of the present invention;
FIG. 6 is a schematic structural view of the sliding support of the present invention;
FIG. 7 is a schematic view of the latch of the present invention;
wherein, 1-a bidirectional pilot operated valve; 2-a foot pedal; 201-a first stop; 202-a second stop; 3-fixing a bracket; 4-a sliding bracket; 5-a lock pin; 6-big bottom plate of cab.
Detailed Description
The present invention will be further described with reference to the following examples.
As shown in fig. 1 to 7, a multifunctional pilot operated foot valve mechanism comprises a bidirectional pilot operated valve 1, a pedal 2, a fixed bracket 3, a sliding bracket 4 and a lock pin 5, wherein the bidirectional pilot operated valve 1 is assembled on a large bottom plate 6 of a cab and is generally positioned at a position where a right foot of a driver is placed, the pedal 2 is assembled on the bidirectional pilot operated foot valve 1, and the driver can step the pedal 2 forwards and backwards by using the foot.
Fig. 2 is a schematic structural diagram of the bidirectional pilot operated valve, mounting holes are formed in the front end and the rear end of the bidirectional pilot operated valve 1, the bidirectional pilot operated valve 1 is assembled on a cab large bottom plate 6 through bolts penetrating through the mounting holes, and two threaded holes are formed in the top of the bidirectional pilot operated valve 1 and used for connecting a pedal 2 through bolts.
Fig. 3 is a working schematic diagram of the bidirectional pilot operated valve, and the bidirectional pilot operated valve 1 has four pilot oil ports in total, which are respectively: the two-way pilot operated valve 1 is provided with two three-way valves at the front end and the rear end respectively, the three-way valve at the front end controls the communication between the oil inlet P and the working oil port A, the three-way valve at the rear end controls the communication between the oil inlet P and the working oil port B, the three-way valves are in a normally closed state when no external force is applied, the top pressing plate can be tilted back and forth to drive the corresponding valve cores at the front end and the rear end to be opened or closed, oil return of different working oil ports is realized, different actions of the valve cores are controlled, different oil ways are driven to work, when pressure is applied at the front end, the three-way valve at the front end is opened, the oil supply port P is communicated with the working oil port A, hydraulic oil drives the valve cores connected with the working oil port A, so that corresponding machines are further driven to work, when pressure is applied at the rear end, the three-way valve at the rear end is opened, the main valve port P is communicated with the working oil port B, the hydraulic oil drives the valve cores connected with the working oil port B, and further drives the corresponding machines to enter another working state.
As shown in fig. 4, the top of the pedal plate 2 is used for placing the sole of a driver, and a good friction effect is provided between the pedal plate 2 and the driver, so as to facilitate stable pedaling, a bolt mounting hole matched with the threaded hole at the top of the two-way pilot operated valve 1 is formed at the bottom of the pedal plate 2, the bottom of the pedal plate 2 is attached to the two-way pilot operated valve 1 and fastened with the two-way pilot operated valve 1 through a bolt, a first stop 201 and a second stop 202 are welded to one side of the pedal plate 2 in a protruding manner, and the first stop 201 and the second stop 202 are respectively located above the front end and the rear end of the two-way pilot operated valve 1 and have a certain distance therebetween.
The fixed support 3 is a flat plate and is welded on one side of the bidirectional pilot foot valve 1, the fixed support 3 is fixed on a cab large bottom plate 6 on the right side of the bidirectional pilot control valve 1, an E-shaped sliding groove is formed in the upper portion of the fixed support, the opening of the fixed support faces downwards, the E-shaped sliding groove comprises a clamping groove located in the middle and two clamping grooves symmetrically located at two ends, and a transverse I-shaped sliding groove is formed in the lower portion of the fixed support, and is shown in figure 5.
As shown in fig. 6, the sliding bracket 4 is a flat plate, the top of the sliding bracket 4 is provided with an eccentric groove, the eccentric groove is a gap, the first stopper 201 or the second stopper 202 on the pedal 2 at a specific position can be cut into the eccentric groove, the center of the sliding bracket 4 is provided with a vertical blind hole chute, one end of the lock pin 5 sinks into the blind hole chute and can slide up and down, the front and back position of the sliding bracket 4 can be adjusted when the sliding bracket slides left and right, the bottom of the sliding bracket 4 is provided with a threaded hole, the sliding bracket 4 is positioned between the bidirectional pilot pedal valve 1 and the fixed bracket 3 and clings to the fixed bracket 3, and a screw passes through the gasket and the linear chute on the fixed bracket 3 and is screwed into the threaded hole below the sliding bracket 4, so that the sliding bracket 4 clings to the fixed bracket 3, the freedom degrees of the sliding bracket 4 in the left and right directions and up and down can be limited, and can only slide back and forth along the linear chute.
As shown in fig. 7, the lock pin 5 is in a T-shaped structure, one end of the large end of the lock pin 5 is a sliding block, the sliding block is placed in a vertical blind hole sliding groove of the sliding support 4 and can slide up and down in the blind hole sliding groove, the front and back positions of the sliding support 4 can be adjusted during left and right sliding, the other end of the lock pin 5 is a long round rod, one end of the long round rod penetrates through an E-shaped sliding groove of the fixed support 3 and then is suspended for a certain distance, the long round rod can slide and shift or be positioned in the E-shaped sliding groove, and the long round rod is clamped into one clamping groove of the E-shaped sliding groove on the fixed support under the self-gravity action of the lock pin 5 when no external force is applied, so that all degrees of freedom of the sliding support 4 are limited.
A method of using a multi-function pilot operated foot valve mechanism, comprising:
when the lock pin 5 is placed in the clamping groove in the middle of the E-shaped sliding groove in the fixed support 3, the eccentric groove in the top of the sliding support 4 is positioned between the first stop 201 and the second stop 202 on the pedal plate 2, the sliding support 4 supports the first stop 201 and the second stop 202 of the pedal plate 2, and the pedal plate 2 cannot tilt back and forth, is only equivalent to a support and can be safely trodden.
The lock pin 5 is lifted upwards, the sliding support 4 can be pushed forwards and pushed together to move, when the lock pin 5 moves to the foremost end, the lock pin 5 can be drawn into a clamping groove of an E-shaped sliding groove under the action of self gravity, the sliding support 4 is locked, the eccentric groove in the top of the sliding support 4 is just positioned below the first stop block 201 at the front end of the pedal 2, when the pedal 2 is stepped forwards, the first stop block 201 slides into the eccentric groove, the pedal 2 can tilt forwards, so that a valve core at the front end of the bidirectional pilot control valve 1 is opened, the second stop block 202 at the rear end of the pedal 2 is still supported by the sliding support 4 and cannot be stepped backwards, and therefore only single pipeline communication can be realized, and one action of machines and tools is controlled.
When the lock pin 5 is lifted upwards and slides to the rearmost end along the E-shaped sliding groove, the sliding support 4 also moves to the rearmost end, the lock pin 5 slides into the clamping groove of the E-shaped sliding groove under the action of self gravity, the sliding support 4 is locked, the eccentric groove of the sliding support 4 is positioned above the second stop block 202 at the rear end of the pedal 2 at the moment, the first stop block 201 at the front end exceeds the front edge of the stop block, the pedal 2 can tilt forwards and backwards, different valve cores on the bidirectional pilot pedal valve 1 are opened, two groups of different pilot hydraulic pipelines are connected, and therefore two actions of the machine tool are controlled.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (8)
1. The multifunctional pilot operated pedal valve mechanism is characterized by comprising a bidirectional pilot operated valve (1), a pedal plate (2), a fixed support (3), a sliding support (4) and a lock pin (5), wherein the bidirectional pilot operated valve (1) is assembled on a large cab bottom plate (6), the pedal plate (2) is assembled on the bidirectional pilot operated valve (1) and can be stepped on forwards and backwards, the fixed support (3) is positioned on one side of the bidirectional pilot operated valve (1), the sliding support (4) is arranged between the two fixed support (1) and the fixed support, an E-shaped sliding groove and a linear sliding groove are formed in the fixed support (3), the lock pin (5) penetrates through the sliding support (4) and slides along the E-shaped sliding groove, and the sliding support (4) slides forwards and backwards along the linear sliding groove.
2. The multifunctional pilot operated pedal valve mechanism according to claim 1, wherein the bidirectional pilot operated valve (1) is provided with four pilot oil ports, including an oil inlet port P, a working oil port a, a working oil port B and an oil return port T, the two-position three-way valve is respectively arranged at the front end and the rear end of the bidirectional pilot operated valve (1), the communication between the oil inlet port P and the working oil port a is controlled by the three-way valve at the front end, and the communication between the oil inlet port P and the working oil port B is controlled by the two-way valve at the rear end.
3. The multifunctional pilot-operated foot valve mechanism as claimed in claim 1, wherein a first stop (201) and a second stop (202) are welded to one side of the foot pedal (2), and the first stop (201) and the second stop (202) are respectively located above the front end and the rear end of the bidirectional pilot-operated valve (1) with a certain distance therebetween.
4. The multifunctional pilot-operated pedal valve mechanism as claimed in claim 1, characterized in that the fixed bracket (3) is a flat plate, the fixed bracket (3) is fixed on a cab large floor (6) on the right side of the bidirectional pilot-operated valve (1), an "E" -shaped chute is formed above the fixed bracket (3) and has a downward opening, a transverse "linear" -shaped chute is formed below the fixed bracket (3), and one end of the lock pin (5) sinks into the "E" -shaped chute and slides therein.
5. The multifunctional pilot operated pedal valve mechanism according to claim 1, wherein the sliding bracket (4) is a flat plate, the sliding bracket (4) is installed between the bidirectional pilot operated valve (1) and the fixed bracket (3) and clings to the fixed bracket (3), the top of the sliding bracket (4) is provided with an eccentric groove, a stop block arranged on the pedal plate (2) at a specific position is scratched into the eccentric groove, the center of the sliding bracket (4) is provided with a vertical blind hole sliding chute, one end of the lock pin (5) is sunk into the blind hole to slide, the bottom of the sliding bracket (4) is provided with a threaded hole, and a screw passes through the I-shaped sliding chute on the fixed bracket (3) and then is screwed into the threaded hole to limit the freedom degrees of the sliding bracket (4) in the left-right and up-down directions so that the sliding bracket can only slide back and forth.
6. The multifunctional pilot operated pedal valve mechanism according to claim 1, wherein the lock pin (5) is of a T-shaped structure, one end of the large end of the lock pin (5) is a sliding block and sinks into a blind hole sliding groove of the sliding support (4) to slide in the blind hole sliding groove, the other end of the lock pin (5) is a long round rod and penetrates through an E-shaped sliding groove on the fixed support (3) to hang out for a certain distance, and the long round rod of the lock pin (5) slides and shifts or is positioned in the E-shaped sliding groove.
7. The multifunctional pilot-operated pedal valve mechanism as claimed in claim 1, wherein the two-way pilot-operated valve (1) is provided with mounting holes at the front and rear ends for bolting with a cab large bottom plate (6), the two-way pilot-operated valve (1) is provided with two threaded holes at the top, the pedal (2) is provided with bolt mounting holes at the bottom matched with the threaded holes at the top of the two-way pilot-operated valve (1), and the pedal (2) is bolted on the two-way pilot-operated valve (1).
8. Use of a multi-functional pilot operated foot valve mechanism according to any one of claims 1-7, comprising:
a lock pin (5) is arranged in a clamping groove in the middle of an E-shaped sliding groove on a fixed support (3), an eccentric groove in the top of a sliding support (4) is positioned between a first stop block (201) and a second stop block (202) on a pedal (2), the sliding support (4) supports the first stop block (201) and the second stop block (202) of the pedal (2), and the pedal (2) cannot tilt forwards and backwards and is used for treading;
the lock pin (5) is lifted upwards, pushed forwards and pushed to synchronously move with the sliding support (4), when the lock pin moves to the foremost end, the lock pin (5) slides into a clamping groove of an E-shaped sliding groove under the action of self gravity, the sliding support (4) is locked, an eccentric groove in the top of the sliding support (4) is positioned below a first stop block (201) at the front end of the pedal (2), when the pedal (2) is stepped forwards, the first stop block (201) slides into the eccentric groove, the pedal (2) tilts forwards, and then a valve core at the front end of the bidirectional pilot control valve (1) is opened, at the moment, a second stop block (202) at the rear end of the pedal (2) is supported by the sliding support (4) and cannot be stepped backwards, single pipeline communication is realized, and one action of machines is controlled;
when the lock pin (5) is lifted upwards and slides to the rearmost end along the E-shaped sliding groove, the sliding support (4) moves to the rearmost end synchronously, the lock pin (5) slides into the clamping groove of the E-shaped sliding groove under the action of self gravity, the sliding support (4) is locked, the eccentric groove of the sliding support (4) is positioned above the second stop block (202) at the rear end of the pedal (2), the first stop block (201) at the front end exceeds the front edge of the stop block, the pedal (2) can tilt forwards and backwards, different valve cores on the bidirectional pilot control valve (1) are opened, two groups of different pilot hydraulic pipelines are switched on, and therefore two actions of the machine are controlled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810018506.3A CN107964998B (en) | 2018-01-09 | 2018-01-09 | Multifunctional pilot-operated pedal valve mechanism and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810018506.3A CN107964998B (en) | 2018-01-09 | 2018-01-09 | Multifunctional pilot-operated pedal valve mechanism and using method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107964998A CN107964998A (en) | 2018-04-27 |
| CN107964998B true CN107964998B (en) | 2023-02-14 |
Family
ID=61993412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810018506.3A Active CN107964998B (en) | 2018-01-09 | 2018-01-09 | Multifunctional pilot-operated pedal valve mechanism and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107964998B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458787B (en) * | 2022-02-16 | 2022-11-15 | 江苏钛铭液压科技有限公司 | Embedded double-control self-locking pedal valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102776911A (en) * | 2012-07-27 | 2012-11-14 | 三一重机有限公司 | Pedal plate for crawler-type engineering machinery |
| CN202691260U (en) * | 2012-07-24 | 2013-01-23 | 中联重科股份有限公司渭南分公司 | Pilot pedal valve and excavator |
| CN103046605A (en) * | 2011-10-17 | 2013-04-17 | 神钢建设机械株式会社 | Upper machine body for operating machine, and operating machine having the same |
| CN207846526U (en) * | 2018-01-09 | 2018-09-11 | 徐州徐工挖掘机械有限公司 | A kind of foot-operated valve system of multi-functional pilot control |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7857090B2 (en) * | 2008-03-07 | 2010-12-28 | Deere & Company | Auxiliary input arrangement |
-
2018
- 2018-01-09 CN CN201810018506.3A patent/CN107964998B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103046605A (en) * | 2011-10-17 | 2013-04-17 | 神钢建设机械株式会社 | Upper machine body for operating machine, and operating machine having the same |
| CN202691260U (en) * | 2012-07-24 | 2013-01-23 | 中联重科股份有限公司渭南分公司 | Pilot pedal valve and excavator |
| CN102776911A (en) * | 2012-07-27 | 2012-11-14 | 三一重机有限公司 | Pedal plate for crawler-type engineering machinery |
| CN207846526U (en) * | 2018-01-09 | 2018-09-11 | 徐州徐工挖掘机械有限公司 | A kind of foot-operated valve system of multi-functional pilot control |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107964998A (en) | 2018-04-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101877988B1 (en) | Boom cylinder control circuit for construction machinery | |
| CN101090859B (en) | Fork positioner | |
| EP2597211B1 (en) | Hydraulic excavator | |
| US20120031088A1 (en) | Hydraulic drive system for construction machine | |
| CN107964998B (en) | Multifunctional pilot-operated pedal valve mechanism and using method thereof | |
| CN101624165A (en) | Combined counterweight device and crane using same | |
| CN113882444A (en) | Bulldozing hydraulic system and excavator with dozing blade function of floating | |
| EP1595032B1 (en) | Tool holder with hydraulic coupling means | |
| CN102242745B (en) | Highly integrated proportion flow distribution valve | |
| CN206346729U (en) | Rock drill automatic rollback control system | |
| CN207846526U (en) | A kind of foot-operated valve system of multi-functional pilot control | |
| CN202924686U (en) | Clamping arm clamping structure | |
| CN1328515C (en) | Differential speed accelerating circuits | |
| CN210766969U (en) | Swing arm descending return oil reuse control device and excavator | |
| CN102536938B (en) | Liquid controlled multi-way valve | |
| KR101809406B1 (en) | Multifunctional forceps device for excavators | |
| CN111120435A (en) | Hydraulic locking buffer valve, hydraulic system and land leveler | |
| CN101294590A (en) | Three-level electrohydraulic servo valve emergency protecting equipment | |
| CN103088868A (en) | Novel hydraulic excavator multifunctional auxiliary tool controller | |
| CN219386457U (en) | Automatic switching connector of excavator | |
| CN213674841U (en) | Drilling tool | |
| CN216185546U (en) | Quick locking mechanism for automobile cab | |
| CN214465189U (en) | Hydraulic system of drilling machine | |
| CN220283378U (en) | Counterweight control system and crane | |
| CN106761660A (en) | Rock drill automatic rollback control system and its control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |