CN207905006U - A kind of large excavator access step system - Google Patents
A kind of large excavator access step system Download PDFInfo
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- CN207905006U CN207905006U CN201820264847.4U CN201820264847U CN207905006U CN 207905006 U CN207905006 U CN 207905006U CN 201820264847 U CN201820264847 U CN 201820264847U CN 207905006 U CN207905006 U CN 207905006U
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Abstract
The utility model discloses a kind of large excavator access step systems, including ladder frame, ladder ontology, rope hauling device and locking device.Wherein, ladder frame is hinged at excavator nacelle；Ladder ontology is slidably connected in ladder frame；Rope hauling device is connected with ladder ontology, is slided up and down in ladder frame to draw ladder ontology, when in ladder frame, retraction predetermined length rear-pulling rope device drives ladder frame movement to ladder ontology upwards, causes in the accommodation space that ladder frame is contracted at nacelle；When ladder frame is contracted in the accommodation space at nacelle, locking device is inserted into ladder ontology, to fix ladder ontology.The utility model provides a kind of large excavator access step system, can be controlled and be put down in driver's cabin by driver after a shutdown, is packed up in driver's cabin before work.
Description
Technical field
The utility model belongs to engineering machinery field, and in particular to a kind of large excavator access step system.
Background technology
Mine large excavator because its turntable height is higher, if want to step on vehicle must by retractable access step,
Ladder can must at work be packed up, and be put down when not working, and it is strong to mitigate personnel's labour to be necessary for machine power
Degree.The form that has occurred is not folding now, from vehicle front side, what both sides and rear side were got on the bus.But these structures are in mine
Can all there be the problem of durability stability deficiency under the severe use environment in mountain.
The utility model uses a kind of structure that four-bar linkage structure is combined with stretching structure, by adding to structural member
By force, the optimization of structure installation, improves the service life of ladder to greatest extent.
Invention content
In order to achieve the goal above, the utility model provides a kind of large excavator access step system, can after a shutdown by
Driver controls in driver's cabin and puts down, and is packed up in driver's cabin before work.
The utility model is realized by following technical scheme：
A kind of large excavator access step system, including：
Ladder frame is hinged on by connecting rod group at excavator nacelle；
Ladder ontology is slidably connected in the ladder frame；
Rope hauling device is connected with the ladder ontology, and to draw, ladder ontology is upper in the ladder frame to glide
It is dynamic, when retraction predetermined length rear-pulling rope device drives ladder frame movement to the ladder ontology upwards in ladder frame, cause ladder
Subframe is contracted in the accommodation space at nacelle；And
Locking device, when the ladder frame is contracted in the accommodation space at nacelle, locking device is inserted into the ladder
In sub- ontology, to which ladder ontology be fixed.
Preferably, the rope hauling device includes：
Winding drum is mounted on excavator nacelle bottom plate；
Directive wheel I is mounted on the supporting rack in excavator nacelle bottom plate；
Directive wheel II is mounted on any medial surface bottom of the ladder frame；
Wirerope, one end are wrapped on the winding drum, and the other end changes direction by the directive wheel I and directive wheel II
Afterwards, it is connected on the wirerope hanging point being fixed on the lateral surface bottom of the ladder ontology；And
Power plant provides power for winding drum rotation.
Preferably, the power plant includes electric drive hydraulic pump, hydraulic motor and hydraulic tube；
The electric drive hydraulic pump is mounted on excavator nacelle bottom plate, and the hydraulic motor is connected with winding drum, described
Electric drive hydraulic pump is connected by hydraulic tube with hydraulic motor, driving hydraulic motor rotation, and wirerope is driven to rotate.
Preferably, contact bolt, the outside of the ladder frame are installed on the lateral surface bottom of the ladder ontology
Installation has point of contact on the bottom of face；Rope hauling device traction ladder ontology upward sliding in ladder frame, when contact bolt and connects
After contact so that ladder ontology and ladder frame are opposing stationary, and wirerope drives ladder frame to be contracted in the receiving at nacelle
In space.
Preferably, the locking device includes：
Locking cylinder, cylinder body are hinged on the supporting rack on excavator nacelle bottom plate；
Check lock lever, one end and the telescopic rod of the locking cylinder are hinged, and the other end is by the elongation of locking cylinder
It is inserted in place in the locking hole of ladder ontology side bottom, to fixed ladder ontology.
Preferably, further include automatic control system for controlling telescopic rod stretching motion in locking cylinder；It is described from
Autocontrol system includes proximity sensor component and controller；The proximity sensor component includes being separately mounted to excavator extension
Proximity sensor I on supporting rack on Ceiling and proximity sensor II；When proximity sensor I receives ladder frame in place
After signal, controller controls rope hauling device stopping action, and controls locking cylinder and check lock lever is pushed to penetrate locking hole, waits approaching biography
After sensor II receives signal in place, locking cylinder stops locking, and so far entire ladder process of receiving is completed.
Preferably, proximity sensor component further includes on the supporting rack being mounted in excavator nacelle bottom plate close to biography
Sensor III, the proximity sensor IV on ladder frame and the proximity sensor on excavator nacelle bottom plate
Ⅴ；
By locking cylinder, signal is sent to controller to the proximity sensor III in place, and controller controls locking cylinder and shrinks
Check lock lever, and startup rope hauling device is controlled, accommodation space of the ladder frame from nacelle is stretched out, and then rope hauling device continues work
Make so that ladder ontology is in ladder frame slide downward；When proximity sensor IV connects with the locating piece on ladder ontology
It touches, and when proximity sensor V is in contact with the positioning plate in the connecting rod group, controller controls rope hauling device stopping, so far
Terraced process is entirely put to complete.
Preferably, the connecting rod group includes connecting rod I, connecting rod II, connecting rod III and connecting rod IV；The connecting rod III and company
One end of bar IV is respectively hinged at excavator nacelle top, and the other end of connecting rod III and connecting rod IV is respectively hinged at ladder frame top
Portion two sides；One end of the connecting rod I and connecting rod II is respectively hinged on excavator nacelle bottom plate, connecting rod I and connecting rod II it is another
One end is respectively hinged at ladder frame two bottom sides face；Four companies being made up of connecting rod I, connecting rod II, connecting rod III and connecting rod IV
Linkage enables in the accommodation space that ladder frame is contracted at nacelle.
Preferably, mutual corresponding bearing I, two lateral surface of ladder ontology are respectively provided on two medial surface of the ladder frame
On be respectively provided with symmetrical lateral U-type groove, by the cooperation of bearing I and lateral U-type groove, realize ladder ontology in ladder frame
It slides up and down；The bearing II perpendicular with bearing I is additionally provided on one medial surface of the ladder frame, ladder outer body is set on face
There is longitudinal U-type groove, by the cooperation of bearing II and longitudinal U-type groove, prevents ladder ontology double swerve in ladder frame.
Preferably, further include dead lock for safety mechanism, the dead lock for safety mechanism includes connection wirerope, link block, lever
Corner block and clamping block；First jiao of the lever corner block is hinged at the lateral surface bottom of the ladder ontology, lever
Second jiao of corner block is connected with the wirerope in rope hauling device, and the third angle of lever corner block is connected with wirerope is connect；Institute
It states and is hinged at the lateral surface top of ladder ontology in the middle part of clamping block, clamping block bottom is connected with wirerope is connect, clamping block top
Equipped with spring；It is equipped at intervals with multiple blocks in ladder frame medial surface；During normal folding and unfolding ladder, spring, which is in, stretches shape
State, clamping block are not contacted with block；Wirerope in rope hauling device is broken, and spring is in contraction state, clamping block and gear
Block contacts, and prevents ladder ontology (13) from continuing to fall in ladder frame.
Preferably, the third angle of the lever corner block is hinged with adjustable link block, be adjusted link block again with
Connection wirerope is connected, to adjust connection wirerope tightness.
Preferably, second jiao of the lever corner block is hinged with link block, link block again in rope hauling device
Wirerope is connected.
Preferably, further include idler wheel, which is mounted on the ladder ontology below clamping block；The connection steel
Cable is passed through from idler wheel, to change connection wirerope position, is allowed to abut ladder outer body face.
The utility model advantageous effect：
1. the ladder in the utility model provides personnel, the basic of digging machine uses function up and down；
2. being adapted to the adverse circumstances of mine operating mode, structure is reliable；
3. auxiliary can to greatest extent be protected with logic control device to avoid error starting excavator when ladder down state
The safety of witness person and this ladder；
4. auxiliary with mechanical locking mechanism, can be avoided in ladder ontology decentralization process because wirerope fracture or power are unexpected
Lose the negative security risk brought；
5. ladder shrink when only fraction expose to nacelle exterior, this design reduce ladder at work with external object
The possibility of body collision；
6. ladder can arbitrarily control the length of ladder ontology stretching in the case of mine surface injustice, to adapt under ladder
Landform；
7. auxiliary further strengthens the stabilization of ladder ontology with forced locking device；
8. auxiliary further increases ladder ontology during folding and unfolding ladder and personnel is in upper descending stair with track system configuration
When stability.
Description of the drawings
Fig. 1 is the driving and fastening system detail view of the utility model；
Fig. 2 is the ladder structure detail view of the utility model；
Fig. 3 is the folding and unfolding ladder pilot process design sketch of the utility model；
Fig. 4 is the collapsed state of the utility model（Hide pedal in cabin）；
Fig. 5 is that the utility model steps on car state（Hide pedal in cabin）；
Fig. 6 is that the utility model puts proximity sensor group partial enlarged view during ladder；
Fig. 7 is the track system configuration schematic diagram of the utility model；
Fig. 8 be I in Fig. 7 at partial enlarged view；
Fig. 9 be II in Fig. 7 at partial enlarged view；
Figure 10 is the full locking mechanism bottom normal condition structural schematic diagram of the utility model；
Figure 11 is the full locking mechanism bottom locking state structural schematic diagram of the utility model；
Figure 12 is normal condition structural schematic diagram at the top of the full locking mechanism of the utility model；
Figure 13 is locking state structural schematic diagram at the top of the full locking mechanism of the utility model；
Figure 14 is the adjustable link block detailed structure view of the utility model.
In figure：1- electric hydraulic pumps；2. winding drum；3. wirerope；4. hydraulic motor；5. locking cylinder；6. proximity sensor
Component；6-1. proximity sensors I；6-2. proximity sensors II；6-3. proximity sensors III；6-4. proximity sensors IV；6-5.
Proximity sensor V；7. check lock lever；8. directive wheel I；9. directive wheel II；10. ladder frame；11. contact point；12. wirerope is hung
Point；13. ladder ontology；14. contacting bolt；15. locking hole；16. connecting rod I；17. bearing I；18. connecting rod II；19. connecting rod III；
20. connecting rod IV；21. lateral U-type groove；22. locating piece；23. positioning plate；24. connecting wirerope；25. link block；26. adjustable connect
Connect block；26a. screw rods；26b. nuts；26c. U-type grooves；26d. column spinners；26e. axis pins；27. lever corner block；28. bullet
Spring；29. clamping block；30. idler wheel；31. block；32. bearing II；33. longitudinal U-type groove.
Specific implementation mode
Below in conjunction with attached drawing, the utility model is further described by specific embodiment.
As shown in Fig. 2, a kind of large excavator access step system, including ladder frame 10, ladder ontology 13, rope hauling device
And locking device.Wherein, ladder frame 10 is hinged at excavator nacelle；Ladder ontology 13 is slidably connected at ladder frame 10
It is interior；Rope hauling device is connected with ladder ontology 13, is slided up and down in ladder frame 10 to draw ladder ontology 13, when ladder sheet
Body 13 drives ladder frame 10 to move in 10 upward retraction predetermined length rear-pulling rope device of ladder frame, and ladder frame 10 is caused to receive
Contracting is in the accommodation space at nacelle；When ladder frame 10 is contracted in the accommodation space at nacelle, locking device is inserted into ladder
In sub- ontology 13, to which ladder ontology 13 be fixed.
As shown in Figure 1, rope hauling device includes winding drum 2, directive wheel I 8, directive wheel II 9, wirerope 3 and power plant；Volume
Cylinder 2 is raised on excavator nacelle bottom plate；Directive wheel I 8 is mounted on the supporting rack on excavator nacelle bottom plate；It is oriented to
Take turns the II 9 any medial surface bottoms for being mounted on ladder frame 10；3 one ends wound of wirerope is on winding drum 2, and the other end is by being oriented to
I 8 are taken turns with behind the change of directive wheel II 9 direction, is connected on the wirerope hanging point 12 on the lateral surface bottom for being fixed on ladder ontology 13；
Power plant provides power for the rotation of winding drum 2.
Power plant includes electric drive hydraulic pump 1, hydraulic motor 4 and hydraulic tube；Electric drive hydraulic pump 1, which is mounted on, to be excavated
On machine nacelle bottom plate, hydraulic motor 4 is connected with winding drum 2, and electric drive hydraulic pump 1 is connected by hydraulic tube with hydraulic motor 4,
It drives hydraulic motor 4 to rotate, and wirerope 3 is driven to rotate.
One end of connecting rod III 19 and connecting rod IV 20 is respectively hinged at excavator nacelle top, connecting rod III 19 and connecting rod IV 20
The other end is respectively hinged at 10 top two sides of ladder frame；One end of connecting rod I 16 and connecting rod II 18 is respectively hinged at excavator
On nacelle bottom plate, the other end of connecting rod I 16 and connecting rod II 18 is respectively hinged at 10 two bottom sides face of ladder frame；Pass through connecting rod I
16, the four-bar mechanism that connecting rod II 18, connecting rod III 19 and connecting rod IV 20 are constituted enables ladder frame 10 to be contracted in nacelle
In the accommodation space at place.
Ladder ontology 13 is slided up and down by guide rail mechanism in ladder frame 10.
As shown in Fig. 2, being equipped with contact bolt 14, the lateral surface of ladder frame 10 on the lateral surface bottom of ladder ontology 13
Installation has point of contact 11 on bottom；Rope hauling device draws the upward sliding in ladder frame 10 of ladder ontology 13, when contact bolt
After 14 contact with contact point 11 so that ladder ontology 13 and ladder frame 10 are opposing stationary, and wirerope 3 drives ladder frame 10 to receive
Contracting is in the accommodation space at nacelle.
As shown in Figure 1, locking device packet locking cylinder 5, check lock lever 7；The cylinder body of locking cylinder 5 is hinged on excavator nacelle
On supporting rack on bottom plate；7 one end of check lock lever and the telescopic rod of locking cylinder 5 are hinged, and the other end is stretched by locking cylinder 5
It grows and is inserted in place in the locking hole 15 of 13 side bottom of ladder ontology, to fixed ladder ontology 13.
As shown in figure 4, automatic control system includes proximity sensor component 6 and controller；Proximity sensor component 6 includes
II 6-2 of I 6-1 of proximity sensor and proximity sensor being separately mounted on the supporting rack on excavator nacelle bottom plate；When close
I 6-1 of sensor receives ladder frame 10 in place after signal, and controller controls rope hauling device stopping action, and controls locking oil
Cylinder 5 pushes check lock lever 7 to penetrate locking hole 15, and after waiting for that II 6-2 of proximity sensor receives signal in place, locking cylinder 5 stops
Locking, it is so far entire to receive terraced process completion.
As shown in Figure 5, Figure 6, proximity sensor component 6 further includes on the supporting rack being mounted in excavator nacelle bottom plate
III 6-3 of proximity sensor, IV 6-4 of proximity sensor on ladder frame 10 and on the excavator nacelle bottom plate
V 6-5 of proximity sensor；By locking cylinder, signal is sent to controller, controller control lock to III 6-3 of proximity sensor in place
Locking oil cylinder 5 shrinks check lock lever 7, and controls startup rope hauling device, and accommodation space of the ladder frame 10 from nacelle is stretched out, and is then drawn
Rope device works on so that ladder ontology 13 is in 10 slide downward of ladder frame；As IV 6-4 of proximity sensor and it is located at ladder
Locating piece 22 on ontology 12 is in contact, and when V 6-5 of proximity sensor is in contact with the positioning plate 23 in the connecting rod group,
Controller, which controls rope hauling device, to be stopped, and is so far entirely put terraced process and is completed.
As shown in Fig. 7, Fig. 8, Fig. 9, mutual corresponding bearing I 17, ladder sheet are respectively provided on 10 liang of medial surfaces of ladder frame
It is respectively provided with symmetrical lateral U-type groove 21 on 13 liang of lateral surfaces of body, by the cooperation of bearing I 17 and lateral U-type groove 21, realizes ladder
Sub- ontology 13 slides up and down in ladder frame 10.
The bearing II 32 perpendicular with bearing I 17,13 lateral surface of ladder ontology are additionally provided on 10 1 medial surface of ladder frame
It is equipped with longitudinal U-type groove 33, by the cooperation of bearing II 32 and longitudinal U-type groove 33, prevents ladder ontology 13 in ladder frame 10
Middle double swerve.
As shown in Figure 10, Figure 11, Figure 12, Figure 13, dead lock for safety mechanism includes connection wirerope 24, link block 25, lever three
Hornblock 27 and clamping block 29；First jiao of lever corner block 27 is hinged at the lateral surface bottom of ladder ontology 13, lever three
Second jiao of hornblock 27 is hinged with link block 25, and link block 25 is connected with the wirerope 3 in rope hauling device again, lever corner block
27 the third angle is hinged with adjustable link block 26, and link block 26 is adjusted and is connected with wirerope 24 is connect；Clamping block 29
Middle part is hinged at the lateral surface top of ladder ontology 13, and 29 bottom of clamping block is connected with wirerope 24 is connect, 29 top of clamping block
Equipped with spring 28, idler wheel 30 is equipped on the ladder ontology 13 below clamping block 29, connection wirerope 5 is passed through from idler wheel 16, used
To change 5 position of connection wirerope, it is allowed to abut 13 lateral surface of ladder ontology.
As shown in figure 14, it includes a screw rod 26a, a U-type groove 26c and a column spinner 26d that link block 26, which is adjusted,；Column spinner
The one end 26d and the third angle of lever corner block 27 are hinged, and the column spinner 26d other ends are equipped with a through-hole；One end of screw rod 26a with
U-type groove 26c Joints, are equipped with an axis pin 26e at U-type groove 26c, and connection wirerope 24 passes through after being pierced by from detour in axis pin 26e
Band fastens；The other end of screw rod 26a is passed through from through-hole, and a spiral shell is respectively provided on the screw rod 26a of column spinner 26d upper and lowers
Female 26b realizes the adjusting of screw rod 26a length by two nut 26b, to 28 tightness of indirect adjustment spring.
It is equipped at intervals with multiple blocks 31 in 10 medial surface of ladder frame；During normal folding and unfolding ladder, spring 28 is in
Tensional state, clamping block 29 are not contacted with block 31；Wirerope 3 in rope hauling device is broken, and spring 28 is in contraction-like
State, clamping block 29 are contacted with block 31, prevent ladder ontology 13 from continuing to fall in ladder frame 10.
The course of work：
When driver is in driver's cabin, the receipts ladder button in driver's cabin is pressed, interior storage battery is for electric drive electric hydaulic
Pump 1, to drive hydraulic motor 4 that winding drum 2, the rotation of winding drum 2 is driven to pull wirerope 3, steel by the hydraulic oil in hydraulic tube
Cable is connected to wirerope hanging point 12 after directive wheel I 8 and directive wheel II 9 change direction, and ladder ontology 13 is pulled up at this time, leads to
Cross the upward sliding in ladder frame 10 of bearing I 17.After bolt 14 to be contacted is contacted with contact point 11, ladder reaches such as Fig. 3 institutes
The state shown.Wirerope 3 drives ladder frame 10, connecting rod I 16, connecting rod II 18, connecting rod III 19, connecting rod IV 20 and warehouse to form later
Parallel motion, after the state to be exercised to Fig. 4,15 axis of locking hole is overlapped with 7 axis of check lock lever, proximity sensor I
After 6-1 receives signal in place, controller is by controlling the solenoid valve being connected with hydraulic motor 4 so that winding drum stops moving
Make, and so that locking cylinder 5 pushes check lock lever 7 to penetrate locking hole 15 by controlling the solenoid valve being connected with locking cylinder 5,
After waiting for that II 6-2 of proximity sensor receives signal in place, locking cylinder 5 stops locking, and so far entire ladder process of receiving is completed.
When driver presses the terraced button of putting in driver's cabin, by locking cylinder, signal is sent III 6-3 of proximity sensor in place
To controller, controller controls locking cylinder 5 and shrinks check lock lever 7, and interior storage battery is for electric drive electric hydraulic pump 1, to pass through
Hydraulic oil driving hydraulic motor 4 in hydraulic tube drives winding drum 2, winding drum 2 to rotate, receiving of the ladder frame 10 from nacelle
Space is stretched out, and then rope hauling device works on so that ladder ontology 13 works as proximity sensor in 10 slide downward of ladder frame
IV 6-4 is in contact with the locating piece 22 on ladder ontology 13, and V 6-5 of proximity sensor determines in connecting rod group
When position plate 23 is in contact, controller, which controls rope hauling device, to be stopped, and is so far entirely put terraced process and is completed.
During normal folding and unfolding ladder, dead lock for safety mechanism is in normal condition, runs out of steam if power-off suddenly occurs,
Situations such as wirerope 3 is broken, then dead lock for safety system will change to locking state automatically, caused by preventing 13 freely falling body of ladder ontology
Damage.It is as follows that it makees principle：Wirerope 24 is connected under normal condition and spring 28 is tensed by wirerope 3, it is assumed that steel during folding and unfolding ladder
Cable 3 is broken suddenly, and the balance on lever corner block 27 is broken, the spring 28 in tensional state will pull clamping block 29,
It connects wirerope 24, pull adjustable 26 1 pieces of link block upwards along idler wheel 30.Shape is locked to which clamping block 29 is pulled to Figure 13
State, edge block block 31, generate braking action, prevent ladder ontology 13 from continuing to fall, to play locked protective effect,
Block 31 is evenly arranged along ladder stroke, therefore has protective effect in ladder stroke.
Above are merely preferred embodiments of the utility model, it should be pointed out that：For the ordinary skill people of the art
For member, without departing from the principle of this utility model, several improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as the scope of protection of the utility model.
Claims (10)
1. a kind of large excavator access step system, which is characterized in that including：
Ladder frame（10）, it is hinged at excavator nacelle by connecting rod group；
Ladder ontology（13）, it is slidably connected at the ladder frame（10）It is interior；
Rope hauling device, with the ladder ontology（13）It is connected, to draw ladder ontology（13）In the ladder frame（10）
It inside slides up and down, when the ladder ontology（13）In ladder frame（10）Upward retraction predetermined length rear-pulling rope device drives ladder
Frame（10）Movement, causes ladder frame（10）It is contracted in the accommodation space at nacelle；And
Locking device, when the ladder frame（10）It is contracted in the accommodation space at nacelle, locking device is inserted into the ladder
Sub- ontology（13）In, thus by ladder ontology（13）It is fixed.
2. a kind of large excavator access step system according to claim 1, which is characterized in that the rope hauling device packet
It includes：
Winding drum (2) is mounted on excavator nacelle bottom plate；
Directive wheel I (8) is mounted on the supporting rack in excavator nacelle bottom plate；
Directive wheel II (9) is mounted on the ladder frame（10）Any medial surface bottom；
Wirerope（3）, one end is wrapped on the winding drum (2), and the other end is by the directive wheel I (8) and directive wheel II (9)
After changing direction, it is connected to and is fixed on the ladder ontology（13）Lateral surface bottom on wirerope hanging point (12) on；And
Power plant provides power for winding drum (2) rotation.
3. a kind of large excavator access step system according to claim 2, it is characterised in that：The power plant includes
Electric drive hydraulic pump (1), hydraulic motor (4) and hydraulic tube；
The electric drive hydraulic pump (1) is mounted on excavator nacelle bottom plate, the hydraulic motor (4) and winding drum (2) phase
Even, the electric drive hydraulic pump (1) is connected by hydraulic tube with hydraulic motor (4), and driving hydraulic motor (4) rotates, and band
Dynamic wirerope (3) rotation.
4. a kind of large excavator access step system according to claim 1, it is characterised in that：The ladder ontology（13）
Lateral surface bottom on be equipped with contact bolt (14), the ladder frame（10）Lateral surface bottom on install and have point of contact
(11)；
Rope hauling device draws ladder ontology（13）In ladder frame（10）Interior upward sliding, when contact bolt (14) and contact point
(11) after contacting so that ladder ontology（13）With ladder frame（10）Opposing stationary, wirerope (3) drives ladder frame (10) to receive
Contracting is in the accommodation space at nacelle.
5. a kind of large excavator access step system according to claim 1, which is characterized in that the locking device packet
It includes：
Locking cylinder（5）, cylinder body is hinged on the supporting rack on excavator nacelle bottom plate；
Check lock lever（7）, one end and the locking cylinder（5）Telescopic rod be hinged, the other end passes through locking cylinder（5）Stretch
It grows and is inserted in place in ladder ontology（13）The locking hole of side bottom（15）In, to fixed ladder ontology（13）.
6. a kind of large excavator access step system according to claim 5, it is characterised in that：Further include for controlling lock
Locking oil cylinder（5）The automatic control system of middle telescopic rod stretching motion；
The automatic control system includes proximity sensor component（6）And controller；
The proximity sensor component（6）Including the proximity sensor being separately mounted on the supporting rack on excavator nacelle bottom plate
Ⅰ（6-1）With proximity sensor II（6-2）；
When proximity sensor I（6-1）Receive ladder frame（10）In place after signal, controller, which controls rope hauling device, to be stopped moving
Make, and controls locking cylinder（5）It pushes check lock lever (7) to penetrate locking hole (15), waits for proximity sensor II（6-2）It receives in place
After signal, locking cylinder（5）Stop locking, so far entire ladder process of receiving is completed.
7. a kind of large excavator access step system according to claim 1, it is characterised in that：The connecting rod group includes
Connecting rod I（16）, connecting rod II（18）, connecting rod III（19）And connecting rod IV（20）；
The connecting rod III（19）With connecting rod IV（20）One end be respectively hinged at excavator nacelle top, connecting rod III（19）And connecting rod
Ⅳ（20）The other end be respectively hinged at ladder frame（10）Top two sides；
The connecting rod I（16）With connecting rod II（18）One end be respectively hinged on excavator nacelle bottom plate, connecting rod I（16）And connecting rod
Ⅱ（18）The other end be respectively hinged at ladder frame（10）Two bottom sides face；
Pass through connecting rod I（16）, connecting rod II（18）, connecting rod III（19）And connecting rod IV（20）The four-bar mechanism of composition makes ladder
Frame（10）It can be contracted in the accommodation space at nacelle.
8. a kind of large excavator access step system according to claim 1, it is characterised in that：
The ladder frame（10）Mutual corresponding bearing I is respectively provided on two medial surfaces（17）, ladder ontology（13）Two lateral surfaces
On be respectively provided with symmetrical lateral U-type groove（21）, pass through bearing I（17）With lateral U-type groove（21）Cooperation, realize ladder ontology
（13）In ladder frame（10）In slide up and down；
The ladder frame（10）It is additionally provided on one medial surface and bearing I（17）Perpendicular bearing II（32）, ladder ontology
（13）Lateral surface is equipped with longitudinal U-type groove（33）, pass through bearing II（32）With longitudinal U-type groove（33）Cooperation, prevent ladder sheet
Body（13）In ladder frame（10）Middle double swerve.
9. a kind of large excavator access step system according to claim 1, it is characterised in that：Further include that safety lock crashes
Structure, the dead lock for safety mechanism include connection wirerope（24）, link block（25）, lever corner block（27）And clamping block（29）；
The lever corner block（27）First jiao be hinged in the ladder ontology（13）Lateral surface bottom at, lever triangle
Block（27）Second jiao with the wirerope in rope hauling device（3）It is connected, lever corner block（27）The third angle with connect wirerope
（24）It is connected；
The clamping block（29）Middle part is hinged on ladder ontology（13）Lateral surface top at, clamping block（29）Bottom with connect steel
Cable（24）It is connected, clamping block（29）Top is equipped with spring（28）；
In ladder frame（10）Medial surface is equipped at intervals with multiple blocks（31）；
During normal folding and unfolding ladder, spring（28）In tensional state, clamping block（29）With block（31）It does not contact；
Wirerope in rope hauling device（3）It is broken, spring（28）In contraction state, clamping block（29）With block（31）It connects
It touches, prevents ladder ontology (13) in ladder frame（10）In continue to fall.
10. a kind of large excavator access step system according to claim 9, it is characterised in that：The lever corner block
（27）The third angle and adjustable link block（26）It is hinged, link block is adjusted（26）Again with connect wirerope（24）It is connected,
To adjust connection wirerope（24）Tightness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820264847.4U CN207905006U (en) | 2018-02-23 | 2018-02-23 | A kind of large excavator access step system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820264847.4U CN207905006U (en) | 2018-02-23 | 2018-02-23 | A kind of large excavator access step system |
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| CN207905006U true CN207905006U (en) | 2018-09-25 |
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| CN201820264847.4U Active CN207905006U (en) | 2018-02-23 | 2018-02-23 | A kind of large excavator access step system |
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| Country | Link |
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| CN (1) | CN207905006U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108193734A (en) * | 2018-02-23 | 2018-06-22 | 徐州徐工挖掘机械有限公司 | Large excavator access step system |
| US12030460B2 (en) | 2019-07-05 | 2024-07-09 | Jaguar Land Rover Limited | Ladder assembly for a vehicle |
-
2018
- 2018-02-23 CN CN201820264847.4U patent/CN207905006U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108193734A (en) * | 2018-02-23 | 2018-06-22 | 徐州徐工挖掘机械有限公司 | Large excavator access step system |
| CN108193734B (en) * | 2018-02-23 | 2023-04-28 | 徐州徐工挖掘机械有限公司 | Boarding ladder system of large excavator |
| US12030460B2 (en) | 2019-07-05 | 2024-07-09 | Jaguar Land Rover Limited | Ladder assembly for a vehicle |
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