CN203655137U - Safety protection device of mine excavator boarding ladder - Google Patents
Safety protection device of mine excavator boarding ladder Download PDFInfo
- Publication number
- CN203655137U CN203655137U CN201320880973.XU CN201320880973U CN203655137U CN 203655137 U CN203655137 U CN 203655137U CN 201320880973 U CN201320880973 U CN 201320880973U CN 203655137 U CN203655137 U CN 203655137U
- Authority
- CN
- China
- Prior art keywords
- airstair
- boarding ladder
- excavator
- stage
- right redundant
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a safety protection device of a mine excavator boarding ladder, relates to mining machinery, and solves the technical problem of potential safety hazards existing in the existing boarding ladder. The boarding ladder is connected to a right auxiliary walking board of an excavator through a pin shaft; one edge of the cylinder is fixed with the right auxiliary walking board; the other edge is connected with the boarding ladder; a baffle plate is welded on the right auxiliary walking board; a gasket group is arranged between the boarding ladder and the right auxiliary walking board; an adjusting seat is arranged at the lower end of the boarding ladder; a limiting switch is arranged on the right auxiliary walking board; a touch plate is arranged at the position corresponding to the limiting switch on the boarding ladder; the limiting switch is connected with a cab control system by an electrical signal line. The safety protection device is applied to the mine excavator boarding ladder, and has the advantages of being simple in structure and low in cost, and the requirements of the international standard on the security standards of the large mine excavator boarding ladder can be met.
Description
Technical field
The utility model belongs to mining machinery class, particularly a kind of safety guard of large-sized mining dredger airstair.
Background technology
At present, World Mining Industry giant, for key links such as buying, use, maintenance and the post-installation reviews of standard mining equiment, has set up EMESRT(Earth Moving Equipment Safety Round Table) tissue.Except the reliability of large-sized mining dredger overall performance and main components, driving member, stressed member is had detailed regulation, the most important thing is that it is minimum mandatory technical requirements that safety is forced to standard.The safety Design of large-sized mining dredger, can cross over international market access threshold smoothly to Chinese large-sized mining dredger product, significant.Wherein, pneumatic airstair safety Design is that safety is forced to the importance requiring.
The pneumatic airstair of excavator comprises: ladder, the cylinder of controlling ladder automatic lifting, bearing pin, baffle plate, shim pack etc.; wherein the safety Design of ladder comprises: the counterweight of controlling ladder slow decreasing; railing that can interlock protection when airstair rises; and walk on stage, other assemblies such as guide strip, the safety Design of airstair directly affects operator and boarding personnel's personal safety.
Existing excavator airstair device, as shown in Fig. 1,2,5,6, it is made up of airstair 1, cylinder 2, bearing pin 3, baffle plate 4, shim pack 5, adjusting seat 6.Airstair 1 is connected in right redundant by bearing pin 3 and walks on stage on 9, cylinder 2 is walked on stage 9 fixing with right redundant on one side, connect with airstair 1 on one side, baffle plate 4 is welded on right redundant and walks on stage on 9, prevent that bearing pin from scurrying out, the gap that shim pack 5 is walked on stage between 9 for adjusting airstair 1 and right redundant, adjusting seat 6 is for adjusting the distance on airstair 1 and ground.In the time that excavator starts work, while giving the certain air pressure of cylinder, piston rod extends, and cylinder supports airstair is raised up to and the right redundant horizontal level of walking on stage; In the time having staff need to go up excavator, driver operation button, discharges the gas in cylinder, and ladder slowly drops to certain position, and people can climb up excavator by airstair.
There is certain potential safety hazard in existing airstair, such as airstair has risen to and the right redundant same level position of walking on stage, has the potential safety hazard that on excavator, staff directly falls down from airstair; If people is in the time of boarding, operating personnel operate mine excavator, and boarding personnel are existed to potential safety hazard equally.
Utility model content
The purpose of this utility model is intended to overcome the shortcoming of prior art, and a kind of safety guard of mine excavator airstair is provided, and solves existing airstair and exist the technical problem of potential safety hazard.
The utility model is achieved through the following technical solutions:
A kind of safety guard of mine excavator airstair, comprise: airstair, cylinder, bearing pin, baffle plate, shim pack, adjusting seat, on the right redundant that airstair is connected in excavator by bearing pin is walked on stage, cylinder is walked on stage fixing with right redundant on one side, another side connects with airstair, baffle plate is welded on right redundant and walks on stage above, and shim pack is arranged between airstair and right redundant walk on stage, and adjusting seat is arranged on airstair lower end; It is characterized in that: mounting limit switch on described right redundant is walked on stage, on described airstair, corresponding limit switch place installs contact plate, limit switch is connected with drivers' cab control system with electrical signal line.
The utility model is because airstair has been installed limit switch on right redundant is walked on stage; on airstair, corresponding limit switch place installed contact plate; pack up while starting working at airstair; touch limit switch, form interlock protection, prevent staff's unexpected injury; touch limit switch simultaneously; give the control room signal of telecommunication, only in the time that airstair rises to permanent position, just allow operation, blocked up the exhausted potential safety hazard of airstair.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of mine excavator airstair prior art;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is a kind of structural representation of safety guard of mine excavator airstair;
Fig. 4 is the top view of Fig. 3;
Fig. 5 is the I portion enlarged drawing of Fig. 3;
Fig. 6 is the B-B sectional view of Fig. 5;
Fig. 7 is the A-A sectional view of Fig. 4.
The utility model is further described by preferred embodiment below in conjunction with accompanying drawing.
The specific embodiment
As Fig. 3, 4, 5, 6, shown in 7, a kind of safety guard of mine excavator airstair, comprise: airstair 1, cylinder 2, bearing pin 3, baffle plate 4, shim pack 5, adjusting seat 6, the right redundant that airstair 1 is connected in excavator by bearing pin 3 is walked on stage on 9, cylinder 2 is walked on stage 9 fixing with right redundant on one side, another side connects with airstair 1, baffle plate 4 is welded on right redundant and walks on stage on 9, prevent that bearing pin from scurrying out, shim pack 5 is arranged on airstair 1 and right redundant is walked on stage between 9, the gap of walking on stage between 9 for adjusting airstair 1 and right redundant, adjusting seat 6 is arranged on airstair 1 lower end, for adjusting the distance on airstair 1 and ground.At the described right redundant mounting limit switch 8 on 9 of walking on stage, on described airstair 1, corresponding limit switch 8 places install contact plates 7, limit switch 8 use electrical signal lines are connected with drivers' cab control system.
In the time that excavator starts work, driver operation button, give the certain air pressure of cylinder 2, piston rod extends, and cylinder supports airstair 1 is raised up to and right redundant 9 horizontal levels of walking on stage, at this moment, airstair enters machine mouth and forms self-closed state by telecommunications control system, contact plate 7 touches limit switch 8 simultaneously, and electrical signal transfer is to control room, and now excavator allows operation; In the time having staff to need upper and lower excavator, driver operation button, discharge the gas in cylinder 2, airstair 1 slowly drops to certain position, and airstair enters machine mouth can be opened automatically by telecommunications control system, and contact plate 7 touches limit switch 8 simultaneously, electrical signal transfer is to control room, now excavator does not allow operation, and staff can go out from entering machine mouth, guarantees staff's safety.
The utility model is simple in structure, and cost is low, can meet the requirement of international standard to large-sized mining dredger airstair safety standards.
Claims (1)
1. the safety guard of a mine excavator airstair, comprise: airstair (1), cylinder (2), bearing pin (3), baffle plate (4), shim pack (5), adjusting seat (6), the right redundant that airstair (1) is connected in excavator by bearing pin (3) is walked on stage on (9), cylinder (2) walk on stage with right redundant on one side (9) fixing, another side connects with airstair (1), baffle plate (4) is welded on right redundant and walks on stage on (9), shim pack (5) is arranged on airstair (1) and right redundant is walked on stage between (9), adjusting seat (6) is arranged on airstair (1) lower end, it is characterized in that: mounting limit switch (8) on described right redundant is walked on stage (9),, corresponding limit switch (8) upper at described airstair (1) locates to install contact plate (7), and limit switch (8) is connected with drivers' cab control system with electrical signal line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320880973.XU CN203655137U (en) | 2013-12-30 | 2013-12-30 | Safety protection device of mine excavator boarding ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320880973.XU CN203655137U (en) | 2013-12-30 | 2013-12-30 | Safety protection device of mine excavator boarding ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203655137U true CN203655137U (en) | 2014-06-18 |
Family
ID=50921537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320880973.XU Expired - Fee Related CN203655137U (en) | 2013-12-30 | 2013-12-30 | Safety protection device of mine excavator boarding ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203655137U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196439A (en) * | 2014-07-10 | 2014-12-10 | 太原重工股份有限公司 | Airstairs locking device and airstairs |
| CN105858273A (en) * | 2016-04-22 | 2016-08-17 | 永城煤电控股集团有限公司 | Compartment cleaning system for coal preparation plant and safety device of compartment cleaning system |
| CN110439056A (en) * | 2019-09-03 | 2019-11-12 | 安徽马钢矿业资源集团有限公司 | A kind of manual quickly retracting bucket type pedal ladder |
-
2013
- 2013-12-30 CN CN201320880973.XU patent/CN203655137U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196439A (en) * | 2014-07-10 | 2014-12-10 | 太原重工股份有限公司 | Airstairs locking device and airstairs |
| CN104196439B (en) * | 2014-07-10 | 2016-04-06 | 太原重工股份有限公司 | The locking device of airstair and airstair |
| CN105858273A (en) * | 2016-04-22 | 2016-08-17 | 永城煤电控股集团有限公司 | Compartment cleaning system for coal preparation plant and safety device of compartment cleaning system |
| CN105858273B (en) * | 2016-04-22 | 2018-11-30 | 永城煤电控股集团有限公司 | System and its safety device are cleared up in coal preparation plant compartment |
| CN110439056A (en) * | 2019-09-03 | 2019-11-12 | 安徽马钢矿业资源集团有限公司 | A kind of manual quickly retracting bucket type pedal ladder |
| CN110439056B (en) * | 2019-09-03 | 2023-04-21 | 安徽马钢矿业资源集团有限公司 | Manual quick winding and unwinding bucket type pedal ladder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140618 Termination date: 20171230 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |