CN208293647U - Electrohydraulic push rod formula power shovel airstair apparatus for automatically lifting - Google Patents
Electrohydraulic push rod formula power shovel airstair apparatus for automatically lifting Download PDFInfo
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- CN208293647U CN208293647U CN201820639196.2U CN201820639196U CN208293647U CN 208293647 U CN208293647 U CN 208293647U CN 201820639196 U CN201820639196 U CN 201820639196U CN 208293647 U CN208293647 U CN 208293647U
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- push rod
- electrohydraulic push
- airstair
- power shovel
- hydraulic
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Abstract
A kind of Electrohydraulic push rod formula power shovel airstair apparatus for automatically lifting, it is power source using motor, driving hydraulic station dispenses pressure oil to realize the reciprocating motion i.e. rise and fall of airstair of piston rod, it is performed simultaneously unit and control and power unit is installed separately, space is greatly saved, its structure is simple, it is easy to maintain, it is convenient to operate, it is highly-safe, moreover it is possible to the self-locking function of hydraulic system to be utilized well, in the strong vibration of power shovel operation, whereabouts and the loosening of airstair are prevented, guarantees safety when personnel and electric dipper slewing.But also possess automatic overload protection function, improve the safety of complete equipment.
Description
Technical field
The utility model relates to the technical field of workpiece hoisting apparatus more particularly to a kind of Electrohydraulic push rod formula power shovel airstairs
Apparatus for automatically lifting.
Background technique
Expanding increasingly as Open Pit Mines At Home And Abroad is production-scale, mining technology and equipment and technology level increasingly improve,
In order to further increase the economic benefit and labor productivity of enterprise, production cost is reduced, the mine excavator of bigger specification is
Started gradually to replace the excavating equipment of small dimension, outdoor it is standby to adopt installing to enlargement development has been irreversible to become greatly
Gesture.But since mine excavator, that is, power shovel specification of equipment size is more and more taller and bigger, driver climbs up the difficulty of excavator driving cab
Also it increases with it, the airstair being commonly used is the mode using end counterweight, is utilized after operator climbs up power shovel
The counterweight of end is allowed to tilt, this design use it is simple but heavy, due to the shake of power shovel vehicle in digging mine operation
Dynamic airstair to be made to swing up and down, the walking of severe interference power shovel and rotary motion, security risk easy to form cause safety
The generation of accident.
For this purpose, the designer of the utility model, in view of drawbacks described above, by concentrating on studies and designing, synthesis is long-term for many years
Be engaged in the experience and achievement of related industry, researching and designing goes out a kind of Electrohydraulic push rod formula power shovel airstair apparatus for automatically lifting, with gram
Take drawbacks described above.
Utility model content
The technical problems to be solved in the utility model are as follows: provide a kind of power shovel airstair to solve boarding hardly possible, guarantee simultaneously
Stablizing for airstair is fixed when power shovel operation.
To achieve the above object, the utility model discloses a kind of Electrohydraulic push rod formula power shovel airstair apparatus for automatically lifting,
Including at least swing arm, hydraulic cylinder hold-down support, Electrohydraulic push rod, motor and hydraulic station, it is characterised in that:
Airstair is fixed in one end of the swing arm, and the other end is articulated with the piston-rod end of Electrohydraulic push rod, described hydraulic
The lower end of boarding platform is fixed in the upper end of cylinder hold-down support, and in the middle part of the cylinder body of hydraulic cylinder hold-down support and the Electrohydraulic push rod
Rotation connection is relatively rotated to the cylinder body energy opposing hydraulic cylinder hold-down support of Electrohydraulic push rod, and the Electrohydraulic push rod is connected to
Motor and hydraulic station are to realize the flexible of push rod.
Wherein: being additionally provided with limit contact block below the boarding platform and limited with the position to airstair.
Wherein: the motor and hydraulic station are located inside power shovel canopy, and the hydraulic station includes one by motor control
Double-direction gearpump, the double-direction gearpump by the hydraulic cylinder of oil-way integrated block and hydraulic tube and Electrohydraulic push rod be attached with incite somebody to action
High pressure oil can be sent through oil-way integrated block to the hydraulic cylinder of Electrohydraulic push rod.
Wherein: being additionally provided with Digiplex, the Digiplex, which is equipped with, sends wireless signal to control the wireless of motor
Communication module.
Wherein: the cylinder body on both sides of the middle of the Electrohydraulic push rod is equipped with pin shaft, and the hydraulic cylinder hold-down support is for Electrohydraulic push rod
The pin hole protruded into for alignment pin is placed and is equipped with, the pin hole is greater than the diameter of pin shaft to which Electrohydraulic push rod is rotated by pin shaft
It is connected to hydraulic cylinder hold-down support.
Wherein: the swing arm is articulated with the piston rod of Electrohydraulic push rod by pin shaft, also passes through internal screw thread group on the pin shaft
Dress spherical plain bearing rod end is connected to the piston rod of Electrohydraulic push rod.
Wherein: the oil-way integrated block in the hydraulic station includes pressure self-locking mechanism.
Wherein: the oil-way integrated block in the hydraulic station also includes that the overflow valve in oil circuit is protected to realize that overload is automatic
Protective function.
By above structure it is found that the Electrohydraulic push rod formula power shovel airstair apparatus for automatically lifting of the utility model is with as follows
Effect:
1, structure is simple, easy to maintain, and it is convenient to operate, highly-safe, is able to achieve the raising and lowering of airstair, solves to step on
The problem of machine hardly possible.
2, the self-locking function of hydraulic system can be utilized well, in the strong vibration of power shovel operation, prevent airstair
Whereabouts and loosening, guarantee personnel and safety when electric dipper slewing.But also possess automatic overload protection function, improve the whole series
The safety of equipment.
The detailed content of the utility model can be obtained by aftermentioned explanation and institute's attached drawing.
Detailed description of the invention
Fig. 1 shows the structural schematic diagram of the Electrohydraulic push rod formula power shovel airstair apparatus for automatically lifting of the utility model.
Fig. 2 shows the motion state schematic diagram of the utility model figure rise and fall.
Appended drawing reference:
1- swing arm 2- pin shaft 3- washer 4- round steel 5- internal screw thread assembles spherical plain bearing rod end 6- and limits contact block 7- hydraulic cylinder
Hold-down support 8- Electrohydraulic push rod 9- motor 10- hydraulic station.
Specific embodiment
Referring to Fig. 1 and 2, it is shown that the Electrohydraulic push rod formula power shovel airstair apparatus for automatically lifting of the utility model.
The Electrohydraulic push rod formula power shovel airstair apparatus for automatically lifting includes at least swing arm 1, hydraulic cylinder hold-down support 7, electricity
The top lower edge of airstair 102 is fixed in one end of liquid push rod 8, motor 9 and hydraulic station 10, the swing arm 1, and the other end is articulated with
The lower end of boarding platform 101 is fixed in the upper end of the piston-rod end of Electrohydraulic push rod 8, the hydraulic cylinder hold-down support 7, and hydraulic
It is rotatablely connected in the middle part of the cylinder body of cylinder hold-down support 7 and the Electrohydraulic push rod 8, thus the cylinder body energy opposing hydraulic cylinder of Electrohydraulic push rod 8
Hold-down support 7 is relatively rotated (referring to fig. 2), and the Electrohydraulic push rod 8 is connected to motor 9 and hydraulic station 10 to realize push rod
It is flexible.
Wherein, the lower section of the boarding platform 101 is additionally provided with limit contact block 6, is limited with the position to airstair 101
System.
Wherein, the motor 9 and hydraulic station 10 are located inside power shovel canopy, and the hydraulic station 10 includes one by motor 9
The double-direction gearpump of control, so that using motor as power source, the double-direction gearpump passes through oil-way integrated block and hydraulic tube
It is attached with the hydraulic cylinder of Electrohydraulic push rod 8, wherein the high pressure oil of the double-direction gearpump can be sent through oil-way integrated block to electricity
The hydraulic cylinder of liquid push rod 8 realizes that the reciprocating motion of the piston rod of Electrohydraulic push rod 8 is the rise and fall of airstair.
Optionally, the utility model can also be equipped with Digiplex, and the Digiplex, which is equipped with, sends wireless signal
To control the wireless communication module of motor 9, thus it is positive (anti-) to rotation by Digiplex control driving motor, make hydraulic oil
It by double-direction gearpump pressure oil output, through oil-way integrated block, send to oil cylinder, realizes the i.e. airstair of reciprocating motion of piston rod
Rise and fall.
It wherein, is the relative rotation for realizing hydraulic cylinder hold-down support 7 and the Electrohydraulic push rod 8, the cylinder of the Electrohydraulic push rod 8
Body on both sides of the middle is equipped with pin shaft, and the hydraulic cylinder hold-down support 7 places for Electrohydraulic push rod 8 and is equipped with the pin protruded into for alignment pin
Hole, the pin hole is greater than the diameter of pin shaft, so that Electrohydraulic push rod 8 can be rotationally connected with hydraulic cylinder hold-down support 7 by pin shaft.
The Electrohydraulic push rod of the utility model and motor and hydraulic station are separate types as a result, executive component, that is, Electrohydraulic push rod
Be installed on boarding mesa base, be movably hinged mode using pin shaft and connect, can rotation at a certain angle, and hydraulic station and electricity
Machine is then fixedly mounted on inside power shovel canopy, is attached by hydraulic tube and hydraulic cylinder, taken up space very little.
Wherein, the swing arm 1 is articulated with the piston rod of Electrohydraulic push rod 8 by pin shaft 2, and washer 3 can be socketed on pin shaft 2
With round steel 4, also the piston rod that spherical plain bearing rod end 5 be connected to Electrohydraulic push rod 8 can be assembled by internal screw thread on the pin shaft 2, from
And the piston rod end of Electrohydraulic push rod 8 is connect with airstair using internal screw thread assembling spherical plain bearing rod end, it may be convenient to dismantle
Replacement and maintenance.
Wherein, the oil-way integrated block in the hydraulic station includes pressure self-locking mechanism, so as to utilize hydraulic system
Self-locking function, in motor stalls, piston rod can be rested on certain position, and pressure oil is in state of pressure keeping, guarantee to step on
The stability of machine ladder, it can be very good to lock its movement, in the strong vibration of power shovel operation, prevent airstair whereabouts and
It loosens, guarantees safety when personnel and electric dipper slewing operation.
The oil-way integrated block in the hydraulic station also includes the overflow valve in oil circuit simultaneously, to realize that overload is automatic
Defencive function, when Electrohydraulic push rod work, the over proof power output of the external force as suffered by piston rod or piston have arrived terminal, motor
It is still rotating, at this moment oil pressure is increased to the pressure of setting in oil circuit, and overflow valve quickly and accurately overflow is realized that overload is automatic and protected
Shield.Though motor is rotating, will not burn.
The utility model power shovel airstair can prove that its structure is simple by actual utilization, easy to maintain, and operation is just
Victory, it is highly-safe.
As shown in Fig. 2, the motor 9 inside power shovel canopy mentions when operator presses the rising button on Digiplex
Power supply source, motor 9 are operated with brake hydraulic station 10, and hydraulic station 10 provides high pressure oil to 8 oil inlet end of Electrohydraulic push rod, and Electrohydraulic push rod 8 pushes away
The Forward of piston bar, piston rod and swing arm 1 assemble spherical plain bearing rod end 5 hingedly by internal screw thread, while swing arm 1 and airstair weld
It connects in succession, so airstair is slowly risen under the action of piston rod, when reaching limit 6 position of contact block, limit contact
Block 6 issues signal, and control motor 9 is shut down, and due to the pressure self-locking mechanism in hydraulic station 10, piston rod rests on certain immediately
On position, and it is in state of pressure keeping, airstair is fixed on safe raised position at this time, and power shovel can take safely walking or return
Transfer to industry.When there are personnel to prepare boarding, remote controler declines button is pressed, motor 9 obtains signal reversion, and Electrohydraulic push rod hydraulic cylinder is living
Stopper rod recycling, airstair drops to restraining position, and is locked by pressure self-locking mechanism, and what operator can be safe climbs up power shovel
Platform.This Electrohydraulic push rod formula automatic lifting airstair is safe and effective, easy to operate.
It is readily apparent that above description and record is only citing rather than in order to limit the disclosure of the utility model
Content, application or use.Although describing and being described in the accompanying drawings embodiment, the utility model in embodiment
Do not limit by attached drawing example and be described as in embodiment it is now recognized that optimal mode to implement the religion of the utility model
The specific examples led, the scope of the utility model will include any implementation for falling into the description and appended claims of front
Example.
Claims (8)
1. a kind of Electrohydraulic push rod formula power shovel airstair apparatus for automatically lifting, including at least swing arm, hydraulic cylinder hold-down support, electro-hydraulic push away
Bar, motor and hydraulic station, it is characterised in that:
Airstair is fixed in one end of the swing arm, and the other end is articulated with the piston-rod end of Electrohydraulic push rod, and the hydraulic cylinder is solid
The lower end of boarding platform is fixed in the upper end for determining support, and rotates in the middle part of the cylinder body of hydraulic cylinder hold-down support and the Electrohydraulic push rod
Connection is relatively rotated to the cylinder body energy opposing hydraulic cylinder hold-down support of Electrohydraulic push rod, and the Electrohydraulic push rod is connected to motor
With hydraulic station to realize the flexible of push rod.
2. Electrohydraulic push rod formula power shovel airstair apparatus for automatically lifting as described in claim 1, it is characterised in that: the boarding is flat
Limit contact block is additionally provided with below platform to limit with the position to airstair.
3. Electrohydraulic push rod formula power shovel airstair apparatus for automatically lifting as described in claim 1, it is characterised in that: the motor and
Hydraulic station is located inside power shovel canopy, and the hydraulic station includes a double-direction gearpump by motor control, the two-way gear
Pump is attached by the hydraulic cylinder of oil-way integrated block and hydraulic tube and Electrohydraulic push rod can send high pressure oil through oil-way integrated block
To the hydraulic cylinder of Electrohydraulic push rod.
4. Electrohydraulic push rod formula power shovel airstair apparatus for automatically lifting as described in claim 1, it is characterised in that: be additionally provided with wireless
Remote controler, the Digiplex are equipped with the wireless communication module for sending wireless signal to control motor.
5. Electrohydraulic push rod formula power shovel airstair apparatus for automatically lifting as described in claim 1, it is characterised in that: described electro-hydraulic to push away
The cylinder body on both sides of the middle of bar is equipped with pin shaft, and the hydraulic cylinder hold-down support is placed and is equipped with for Electrohydraulic push rod and protruded into for alignment pin
Pin hole, the pin hole is greater than the diameter of pin shaft to which Electrohydraulic push rod by pin shaft is rotationally connected with hydraulic cylinder hold-down support.
6. Electrohydraulic push rod formula power shovel airstair apparatus for automatically lifting as described in claim 1, it is characterised in that: the swing arm is logical
The piston rod that pin shaft is articulated with Electrohydraulic push rod is crossed, is also connected to by internal screw thread assembling spherical plain bearing rod end on the pin shaft electro-hydraulic
The piston rod of push rod.
7. Electrohydraulic push rod formula power shovel airstair apparatus for automatically lifting as claimed in claim 3, it is characterised in that: the hydraulic station
In oil-way integrated block include pressure self-locking mechanism.
8. Electrohydraulic push rod formula power shovel airstair apparatus for automatically lifting as claimed in claim 3, it is characterised in that: the hydraulic station
In oil-way integrated block also include the overflow valve in oil circuit to realize automatic overload protection function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820639196.2U CN208293647U (en) | 2018-05-02 | 2018-05-02 | Electrohydraulic push rod formula power shovel airstair apparatus for automatically lifting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820639196.2U CN208293647U (en) | 2018-05-02 | 2018-05-02 | Electrohydraulic push rod formula power shovel airstair apparatus for automatically lifting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208293647U true CN208293647U (en) | 2018-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820639196.2U Active CN208293647U (en) | 2018-05-02 | 2018-05-02 | Electrohydraulic push rod formula power shovel airstair apparatus for automatically lifting |
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| CN (1) | CN208293647U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110878571A (en) * | 2019-12-13 | 2020-03-13 | 中铁工程机械研究设计院有限公司 | Swing ladder safety control system for electric shovel |
-
2018
- 2018-05-02 CN CN201820639196.2U patent/CN208293647U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110878571A (en) * | 2019-12-13 | 2020-03-13 | 中铁工程机械研究设计院有限公司 | Swing ladder safety control system for electric shovel |
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