CN207931608U - A kind of access step and large excavator with dead lock for safety mechanism - Google Patents
A kind of access step and large excavator with dead lock for safety mechanism Download PDFInfo
- Publication number
- CN207931608U CN207931608U CN201820264842.1U CN201820264842U CN207931608U CN 207931608 U CN207931608 U CN 207931608U CN 201820264842 U CN201820264842 U CN 201820264842U CN 207931608 U CN207931608 U CN 207931608U
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- China
- Prior art keywords
- ladder
- wirerope
- safety mechanism
- dead lock
- ontology
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Abstract
The utility model discloses a kind of access step and large excavator with dead lock for safety mechanism, access step includes ladder frame, ladder ontology, rope hauling device and dead lock for safety mechanism；Ladder frame is connected at 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；Dead lock for safety mechanism make the wirerope in rope hauling device occur being broken or rope hauling device in power plant power-off run out of steam after, prevent ladder ontology from continuing to fall in ladder frame.The utility model is adapted to the adverse circumstances of mine operating mode, and structure is reliable, and safety and stability is promoted；This mechanical locking mechanism can avoid losing the negative security risk brought suddenly because of wirerope fracture or power in ladder ontology decentralization process.
Description
Technical field
The utility model belongs to engineering machinery field, and in particular to a kind of access step and large size with dead lock for safety mechanism
Excavator.
Background technology
The utility model is related to access step be pull-type, the ladder of such structure is disconnected there are happening suddenly during folding and unfolding ladder
The occasional cases such as electricity, wirerope fracture of rope, if wirerope fracture of rope occurs, ladder ontology is directly sliding from ladder frame rapidly
Under, it is possible to injure the personnel under ladder by a crashing object or smash the object under ladder, this device has some potential safety problems.Therefore,
It is necessary to have dead lock for safety mechanism.
However it is existing in electronic type or fluid pressure type release mechanism have higher requirements to the quality of parts, this practicality is new
Type can greatly reduce the maintenance frequency of parts using Purely mechanical, be a kind of economy, reliable mechanism.
Invention content
Insufficient according to prior art, the utility model provides a kind of access step with dead lock for safety mechanism and large-scale digging
Pick machine, has many advantages, such as simple in structure, and stability is good, response is fast.
The utility model is realized by following technical scheme：
A kind of access step with dead lock for safety mechanism, including：
Ladder frame is connected at 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；And
Dead lock for safety mechanism, make the wirerope in the rope hauling device occur being broken or rope hauling device in power
After device power-off runs out of steam, prevent ladder ontology from continuing to fall in ladder frame.
Preferably, the dead lock for safety mechanism includes connection wirerope, lever corner block and clamping block；The lever triangle
First jiao of block is hinged at the lateral surface bottom of the ladder ontology, second jiao of lever corner block with the steel in rope hauling device
Cable is connected, and the third angle of lever corner block is connected with wirerope is connect；The outer of ladder ontology is hinged in the middle part of the clamping block
At side surface upper part, clamping block bottom is connected with wirerope is connect, and clamping block top is equipped with elastomeric element；Between ladder frame medial surface
Every equipped with multiple blocks；During normal folding and unfolding ladder, elastomeric element is in tensional state, and clamping block is not contacted with block；
Wirerope in rope hauling device occur being broken or rope hauling device in power plant power-off run out of steam after, elastomeric element is in
Contraction state, clamping block are contacted with block, prevent ladder ontology from continuing to fall in ladder frame.
Preferably, second jiao of the lever corner block is hinged with link block, link block again in rope hauling device
Wirerope is connected.
Preferably, described elastomeric element one end is connected with clamping block, the elastomeric element other end and ladder outer body face
On multiple spaced apart through-holes up and down be connected, when elastomeric element is in different through-holes, realize the elastic of elastomeric element
Degree.
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, the adjustable link block includes a screw rod, a U-type groove and a column spinner；Described column spinner one end
It is hinged with the third angle of lever corner block, the column spinner other end is equipped with a through-hole；One end of the screw rod is mutually solid with U-type groove
It connects, an axis pin is equipped at the U-type groove, the connection wirerope is fastened after being pierced by from detour in axis pin by band；Screw rod
The other end is passed through from the through-hole, and a nut is respectively provided on the screw rod of column spinner upper and lower, is realized by two nuts
The adjusting of spiro rod length.
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.
Preferably, the elastomeric element is spring.
Preferably, the rope hauling device includes：
Winding drum is mounted on nacelle bottom plate；
Directive wheel I is mounted on the supporting rack in 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 at the lateral surface bottom for being fixed on 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 pressure
Pump is mounted on nacelle bottom plate, and the hydraulic motor is connected with winding drum, and the electric drive hydraulic pump passes through hydraulic tube and hydraulic pressure
Motor is connected, driving hydraulic motor rotation, and wirerope is driven to rotate.
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.
A kind of large excavator, including the access step above-mentioned with dead lock for safety mechanism.
The utility model advantageous effect：
1. being adapted to the adverse circumstances of mine operating mode, structure is reliable, and safety and stability is promoted；
2. this mechanical locking mechanism can avoid losing suddenly because of wirerope fracture or power in ladder ontology decentralization process
The negative security risk brought；
3. auxiliary realizes the elastic adjusting of spring with the multiple through-holes of upper and lower arranged for interval on the lateral surface of ladder ontology；
4. auxiliary is to be adjusted link block, accurately to adjust the elastic adjusting of spring；
5. 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 full locking mechanism bottom normal condition structural schematic diagram of the utility model peace；
Fig. 2 is the full locking mechanism bottom locking state structural schematic diagram of the utility model peace；
Fig. 3 is normal condition structural schematic diagram at the top of the full locking mechanism of the utility model peace；
Fig. 4 is locking state structural schematic diagram at the top of the full locking mechanism of the utility model peace；
Fig. 5 is the track system configuration schematic diagram of the utility model；
Fig. 6 be I in Fig. 5 at partial enlarged view；
Fig. 7 be II in Fig. 5 at partial enlarged view；
Fig. 8 is the drive system detail view of the utility model；
Fig. 9 is the ladder structure detail view of the utility model；
Figure 10 is the collapsed state of the utility model（Hide pedal in cabin）；
Figure 11 is that the utility model steps on car state（Hide pedal in cabin）；
Figure 12 is the adjustable link block detailed structure view of the utility model.
1- electric drive hydraulic pumps；2- winding drums；3- wireropes；4- hydraulic motors；5- connection wireropes；6- link blocks；7- levers
Corner block；8- directive wheels I；9- directive wheels II；10- ladder frames；11- clamping blocks；12- blocks；13- ladder ontologies；14- bullets
Spring；Link block is adjusted in 15-；15a. screw rods；15b. nuts；15c. U-type grooves；15d. column spinners；15e. axis pins；16- is rolled
Wheel；17- bearings I；18- transverse direction U-type grooves；19- bearings II；The longitudinal directions 20- U-type groove.
Specific implementation mode
Below in conjunction with attached drawing, the utility model is further described by specific embodiment.
The access step with dead lock for safety mechanism of the utility model embodiment, can be used for the big of the utility model embodiment
Type excavator；The utility model applies the large excavator of example, with the utility model embodiment with dead lock for safety mechanism
Access step.
As shown in figure 9, a kind of access step with dead lock for safety mechanism, including ladder frame 10, ladder ontology 13, drawstring
Device and dead lock for safety mechanism；Ladder frame 10 is connected at nacelle；Ladder ontology 13 is slidably connected in ladder frame 10；It draws
Rope device is connected with ladder ontology 13, is slided up and down in ladder frame 10 to draw ladder ontology 13；Dead lock for safety mechanism
So that the wirerope 3 in rope hauling device occur being broken or rope hauling device in power plant power-off run out of steam after, prevent ladder
Sub- ontology 13 continues to fall in ladder frame 10.
As shown in figure 8, 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 nacelle bottom plate；Directive wheel II 9
Mounted on any medial surface bottom of ladder frame 10；For 3 one ends wound of wirerope on winding drum 2, the other end passes through directive wheel I 8
After changing direction with directive wheel II 9, it is connected at the lateral surface bottom for being fixed on ladder ontology 13；Power plant is winding drum 2
Rotation provides power.
Power plant includes electric drive hydraulic pump 1, hydraulic motor 4 and hydraulic tube；Electric drive hydraulic pump 1 is mounted on nacelle
On 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, drives liquid
Pressure motor 4 rotates, and wirerope 3 is driven to rotate.
As shown in Fig. 5, Fig. 6, Fig. 7, 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 18 on 13 liang of lateral surfaces of body, by the cooperation of bearing I 17 and lateral U-type groove 18, realizes ladder
Sub- ontology 13 slides up and down in ladder frame 10；It is additionally provided with the axis perpendicular with bearing I 17 on 10 1 medial surface of ladder frame
II 19 are held, 13 lateral surface of ladder ontology is equipped with longitudinal U-type groove 20, by the cooperation of bearing II 19 and longitudinal U-type groove 20, prevents
The double swerve in ladder frame 10 of ladder ontology 13.
As shown in Figure 1, Figure 2, Figure 3, Figure 4, dead lock for safety mechanism includes connection wirerope 5, lever corner block 7 and clamping block
11；At the lateral surface bottom that first jiao of lever corner block 7 is hinged on ladder ontology 13, second jiao and drawing of lever corner block 7
Wirerope 3 in rope device is connected, and the third angle of lever corner block 7 is connected with wirerope 5 is connect；11 middle part of clamping block is hinged on
At the lateral surface top of ladder ontology 13,11 bottom of clamping block is connected with wirerope 5 is connect, and 11 top of clamping block is equipped with elastomeric element
（Present specification uses spring 14）, i.e. elastomeric element one end is connected with clamping block 11, the outside of the other end and ladder ontology 13
Through-hole on face is connected, and through-hole has multiple, the upper and lower arranged for interval on the lateral surface of ladder ontology 13, when elastomeric element is in not
In same through-hole, the tightness of elastomeric element is realized；It is equipped at intervals with multiple blocks 12 in 10 medial surface of ladder frame；Normal
During folding and unfolding ladder, elastomeric element is in tensional state, and clamping block 11 is not contacted with block 12；Wirerope in rope hauling device
3 occur being broken or rope hauling device in power plant power-off run out of steam after, elastomeric element is in contraction state, clamping block 11
It is contacted with block 12, prevents ladder ontology 13 from continuing to fall in ladder frame 10.
Further scheme：Second jiao of lever corner block 7 is hinged with link block 6, link block 6 again in rope hauling device
Wirerope 3 is connected.
Further scheme：The third angle of lever corner block 7 is hinged with adjustable link block 15, and link block 15 is adjusted
And it is connected with wirerope 5 is connect, to adjust connection 5 tightness of wirerope, to accurately adjust elastomeric element（Present specification
Using spring 14）Elasticity.
As shown in figure 12, it includes a screw rod 15a, a U-type groove 15c and a column spinner 15d that link block 15, which is adjusted,；Column spinner
The one end 15d and the third angle of lever corner block 7 are hinged, and the column spinner 15d other ends are equipped with a through-hole；One end of screw rod 15a and U
Type groove 15c Joints, are equipped with an axis pin 15e at U-type groove 15c, and connection wirerope 5 passes through bundle after being pierced by from detour in axis pin 15e
Band fastening；The other end of screw rod 15a is passed through from through-hole, and a nut is respectively provided on the screw rod 15a of column spinner 15d upper and lowers
15b realizes the adjusting of screw rod 15a length by two nut 15b.
Further include idler wheel 16, which is mounted on the ladder ontology 13 of 11 lower section of clamping block；Connect wirerope 5 from
It is passed through in idler wheel 16, to change 5 position of connection wirerope, is allowed to abut 13 lateral surface of ladder ontology.
The course of work：
As shown in Figure 10, when driver is in driver's cabin, the receipts ladder button in driver's cabin is pressed, interior storage battery power supply is driven
Dynamic electric hydraulic pump 1, to drive hydraulic motor 4 that winding drum 2, the rotation of winding drum 2 is driven to draw by the hydraulic oil in hydraulic tube
Dynamic wirerope 3, wirerope are connected to after directive wheel I 8 and directive wheel II 9 change direction and are fixed on the outer of the ladder ontology 13
At side bottom, ladder ontology 13 is pulled up at this time, by bearing I 17 in ladder frame 10 upward sliding.Wait for ladder ontology
13 completely into in ladder frame 10, and wirerope 3 drives ladder frame 10 and parallel motion later, causes ladder frame
10 are contracted in the terraced process of the entire receipts of completion in the accommodation space at nacelle.
As shown in figure 11, when driver presses the terraced button of putting in driver's cabin, interior storage battery is for electric drive electric hydraulic pump
1, to drive hydraulic motor 4 that winding drum 2, winding drum 2 is driven to rotate by hydraulic oil in hydraulic tube, ladder frame 10 is from extension
Accommodation space at cabin is stretched out, and then rope hauling device works on so that ladder ontology 13 in 10 slide downward of ladder frame, when
Terraced process completion is so far entirely put after touching ground in 13 bottom of ladder ontology.
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.Its operation principle is as follows：Wirerope 5 is connected under normal condition and spring 14 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 7 is broken, and the spring 14 in tensional state will pull clamping block 11, connect
It connects wirerope 5, pull adjustable 15 1 pieces of link block upwards along idler wheel 16.To which clamping block 11 is pulled to Fig. 4 locking states,
Edge blocks block 12, generates braking action, prevents ladder ontology 13 from continuing to fall, to play locked protective effect, block
12 are evenly arranged along ladder stroke, therefore have protective effect in ladder stroke.
Although with reference to the application is exemplary embodiment described, it is to be understood that, term used be explanation and it is exemplary,
Term and not restrictive.The spirit or reality that can be embodied in a variety of forms without departing from utility model due to the application
Matter, it should therefore be appreciated that above-described embodiment is not limited to any details above-mentioned, and should be spiritual defined by appended claims
Accompanying is all should be with the whole variations and remodeling widely explained, therefore fallen into claim or its equivalent scope in range to weigh
Profit requires to be covered.
Claims (10)
1. a kind of access step with dead lock for safety mechanism, which is characterized in that including：
Ladder frame（10）, it is connected at nacelle；
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）
Inside slide up and down；And
Dead lock for safety mechanism makes the wirerope in the rope hauling device（3）Occur be broken or rope hauling device in power
After device power-off runs out of steam, prevent ladder ontology (13) in ladder frame（10）In continue to fall.
2. a kind of access step with dead lock for safety mechanism according to claim 1, it is characterised in that：The dead lock for safety
Mechanism includes connection wirerope（5）, lever corner block（7）And clamping block（11）；
The lever corner block（7）First jiao be hinged on the ladder ontology（13）Lateral surface bottom at, lever corner block
（7）Second jiao with the wirerope in rope hauling device（3）It is connected, lever corner block（7）The third angle with connect wirerope（5）It is connected
It connects；
The clamping block（11）Middle part is hinged on ladder ontology（13）Lateral surface top at, clamping block（11）Bottom with connect steel
Cable（5）It is connected, clamping block（11）Top is equipped with elastomeric element；
In ladder frame（10）Medial surface is equipped at intervals with multiple blocks（12）；
During normal folding and unfolding ladder, elastomeric element is in tensional state, clamping block（11）With block（12）It does not contact；
Wirerope in rope hauling device（3）Occur be broken or rope hauling device in power plant power-off run out of steam after, elasticity
Component is in contraction state, clamping block（11）With block（12）Contact, prevents ladder ontology (13) in ladder frame（10）Relaying
It is continuous to fall.
3. a kind of access step with dead lock for safety mechanism according to claim 2, it is characterised in that：The elastomeric element
One end and clamping block（11）It is connected, the elastomeric element other end and ladder ontology（13）It is multiple spaced apart up and down on lateral surface
Through-hole is connected, and when elastomeric element is in different through-holes, realizes the tightness of elastomeric element.
4. a kind of access step with dead lock for safety mechanism according to claim 2, it is characterised in that：The lever triangle
Block（7）The third angle and adjustable link block（15）It is hinged, link block is adjusted（15）Again with connect wirerope（5）It is connected,
To adjust connection wirerope（5）Tightness.
5. a kind of access step with dead lock for safety mechanism according to claim 4, it is characterised in that：
The adjustable link block（15）Including a screw rod（15a）, a U-type groove（15c）With a column spinner（15d）；
The column spinner（15d）One end and lever corner block（7）The third angle be hinged, column spinner（15d）The other end is equipped with one
Through-hole；
The screw rod（15a）One end and U-type groove（15c）Joint, in the U-type groove（15c）Place is equipped with an axis pin（15e）,
The connection wirerope（5）From axis pin（15e）Middle detour is fastened after being pierced by by band；
Screw rod（15a）The other end passed through from the through-hole, in column spinner（15d）The screw rod of upper and lower（15a）On be respectively provided with
One nut（15b）, pass through two nuts（15b）Realize screw rod（15a）The adjusting of length.
6. a kind of access step with dead lock for safety mechanism according to claim 2, it is characterised in that：It further include idler wheel
（16）, the idler wheel（16）It is mounted on clamping block（11）The ladder ontology of lower section（13）On；
The connection wirerope（5）From idler wheel（16）In pass through, to change connection wirerope（5）Position is allowed to abut ladder ontology
（13）Lateral surface.
7. a kind of access step with dead lock for safety mechanism according to claim 1 is it is characterized in that, the rope hauling device
Including：
Winding drum (2) is mounted on nacelle bottom plate；
Directive wheel I (8) is mounted on the supporting rack in 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 at；And
Power plant provides power for winding drum (2) rotation.
8. a kind of access step with dead lock for safety mechanism according to claim 7, it is characterised in that：The power plant
Including electric drive hydraulic pump (1), hydraulic motor (4) and hydraulic tube；
The electric drive hydraulic pump (1) is mounted on nacelle bottom plate, and the hydraulic motor (4) is connected with winding drum (2), described
Electric drive hydraulic pump (1) is connected by hydraulic tube with hydraulic motor (4), and driving hydraulic motor (4) rotates, and drives wirerope
(3) it rotates.
9. a kind of access step with dead lock for safety mechanism 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（18）, pass through bearing I（17）With lateral U-type groove（18）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（19）, ladder ontology
（13）Lateral surface is equipped with longitudinal U-type groove（20）, pass through bearing II（19）With longitudinal U-type groove（20）Cooperation, prevent ladder sheet
Body（13）In ladder frame（10）Middle double swerve.
10. a kind of large excavator, it is characterised in that：Dead lock for safety mechanism is carried including claim 1 to 9 any one of them
Access step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820264842.1U CN207931608U (en) | 2018-02-23 | 2018-02-23 | A kind of access step and large excavator with dead lock for safety mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820264842.1U CN207931608U (en) | 2018-02-23 | 2018-02-23 | A kind of access step and large excavator with dead lock for safety mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207931608U true CN207931608U (en) | 2018-10-02 |
Family
ID=63652987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820264842.1U Withdrawn - After Issue CN207931608U (en) | 2018-02-23 | 2018-02-23 | A kind of access step and large excavator with dead lock for safety mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207931608U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108177601A (en) * | 2018-02-23 | 2018-06-19 | 徐州徐工挖掘机械有限公司 | Access step and large excavator with dead lock for safety mechanism |
-
2018
- 2018-02-23 CN CN201820264842.1U patent/CN207931608U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108177601A (en) * | 2018-02-23 | 2018-06-19 | 徐州徐工挖掘机械有限公司 | Access step and large excavator with dead lock for safety mechanism |
| CN108177601B (en) * | 2018-02-23 | 2023-07-25 | 徐州徐工挖掘机械有限公司 | Boarding ladder with safety locking mechanism and large excavator |
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| GR01 | Patent grant | ||
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| AV01 | Patent right actively abandoned | ||
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| AV01 | Patent right actively abandoned |
Granted publication date: 20181002 Effective date of abandoning: 20230725 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20181002 Effective date of abandoning: 20230725 |