CN109025793A - A kind of shallow pit ladder - Google Patents
A kind of shallow pit ladder Download PDFInfo
- Publication number
- CN109025793A CN109025793A CN201811092083.6A CN201811092083A CN109025793A CN 109025793 A CN109025793 A CN 109025793A CN 201811092083 A CN201811092083 A CN 201811092083A CN 109025793 A CN109025793 A CN 109025793A
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- China
- Prior art keywords
- ladder
- pedestal
- pit
- limit
- gag lever
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- 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.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C9/00—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes
- E06C9/06—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes movably mounted
- E06C9/08—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes movably mounted with rigid longitudinal members
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ladders (AREA)
Abstract
The invention discloses a kind of shallow pit ladders, it is characterised in that: including pedestal and ladder, the pedestal and ladder are installed in pit, and the pedestal is installed on the bottom of pit, and the bottom of the ladder is rotatablely installed through shaft in the left side of the pedestal；The left side top of the pedestal is equipped with an installation protrusion, and the shaft is installed in the installation protrusion；The top right side of the pedestal is equipped with groove, is equipped with a limit switch in the groove, the contact of the limit switch exposes to the top of the pedestal, and the right side of the ladder can be butted on the contact of the limit switch；On front side of the ladder and rear side is respectively equipped with a position-limit mechanism, and when the left side of the ladder is butted on the pit inner wall, the ladder is limited through the position-limit mechanism, rotate the ladder can not around the shaft.The present invention improves ladder safety in utilization and convenience, improves the safety of operator's operation.
Description
Technical field
The present invention relates to a kind of aging blocks to install elevator more particularly to a kind of shallow pit ladder additional.
Background technique
In elevator industry, the setting of elevator pit is very important engineering link, and through slot can be arranged in pit
Buffer, track base and drainage arrangement etc..Meanwhile according to national standards, pit ladder is also essential portion in pit
Part.In the prior art, elevator is installed for some aging blocks additional, ordinary circumstance Dou Shi is arranged before building, pit is dug before aging blocks, so
The installation of elevator is carried out afterwards.But for aging blocks elevator, pit can there is a problem of it is more, if pit dig it is deep, and its
It is easy to dig to low pipeline, sunkens cord etc., it could even be possible to damaging ground.Therefore, the installation of aging blocks elevator, ordinary circumstance is all
It is to dig shallow pit, depth is smaller, and the buffer height in this way inside pit also can be smaller.If staff is the bottom of at
When cheating interior operation or maintenance, elevator really falls down, and the safe space of staff is especially small, is merely able to lie prone in pit
It is interior.Meanwhile general aging blocks install elevator additional, elevator can be smaller, and the width of pit also can be smaller, will lead to pit in this way
It is relatively high that difficulty is arranged in ladder, if be set up directly on pit inner wall, and will lead to carriage downlink when touches pit.
So in actual operation, ladder in pit extremely short does not have any effect actually, meanwhile, many elevators
Ladder can be arranged when acceptance of lift in company, after acceptance(check), directly prevent ladder to electricity to disassembling ladder
The influence of ladder, it is not only illegal, but also will affect safety.
Summary of the invention
It is an object of the present invention to provide a kind of shallow pit ladders to improve what operator used by using the structure
Convenience and safety improve the convenience that ladder is installed in shallow pit, improve the safety that elevator uses.
In order to achieve the above objectives, the technical solution adopted by the present invention is that: a kind of shallow pit ladder, including pedestal and climb
Ladder, the pedestal and ladder are installed in pit, and the pedestal is installed on the bottom of pit, and the bottom of the ladder turns through shaft
The dynamic left side for being installed on the pedestal, rotates clockwise the ladder, the right side of the ladder is butted on the top surface of the pedestal
On, the ladder is rotated counterclockwise, the left side of the ladder is butted on the inner wall of the pit；The left side top of the pedestal
Equipped with an installation protrusion, the shaft is installed in the installation protrusion；The top right side of the pedestal is equipped with groove, described recessed
One limit switch is installed, the contact of the limit switch exposes to the top of the pedestal, the right side of the ladder in slot
It can be butted on the contact of the limit switch；On front side of the ladder and rear side is respectively equipped with a position-limit mechanism, the ladder
When left side is butted on the pit inner wall, the ladder is limited through the position-limit mechanism, makes the ladder can not be around described
Shaft rotation.
In above-mentioned technical proposal, it is described installation protrusion middle part be equipped with lantern ring, the on both sides of the middle of the shaft respectively with institute
The bottom right for stating ladder is fixedly linked, and the middle part turning set of the shaft is set in the lantern ring.
In above-mentioned technical proposal, the position-limit mechanism includes stop collar, gag lever post and spring, the outer edge surface of the stop collar
It is fixedly installed on the side wall of the ladder, the middle part movement of the gag lever post is inserted in the stop collar, the gag lever post
Outer edge surface be equipped with an annular protrusion, the spring pocket be set to the gag lever post outer edge surface on, the top of the spring is supported
In on the bottom surface of the stop collar, it is butted at the top of the spring on the top surface of the stop collar.
In above-mentioned technical proposal, the both ends of the shaft top surface is equipped with a through-hole, and the bottom of the gag lever post is inserted in institute
It states in through-hole, is respectively equipped with a limit hole, the side of ladder described in the limit hole face on the both ends top surface of the installation protrusion
Wall setting.
In above-mentioned technical proposal, the ladder is rotated counterclockwise, the left side of the ladder is butted on the inner wall of the pit
On, the spring pushes the bottom of the gag lever post to pass through the through-hole and is inserted in the limit hole；The gag lever post is pulled up,
Overcome the elastic force of the spring, the bottom of the gag lever post can be detached from the limit hole.
In above-mentioned technical proposal, the ladder includes connecting plate, two blocks of side plates and complex root cross bar, two blocks of side plates
Bottom is installed vertically on the two sides of the connecting plate, cross bar described in complex root be from top to bottom arranged at intervals at two blocks of side plates it
Between, and the both ends of complex root cross bar are connected with the medial surface of two blocks of side plates respectively, the outer edge surface of the shaft and the company
The bottom of fishplate bar is connected, and the stop collar of position-limit mechanism described in two groups is installed on the side wall of two blocks of side plates.
In above-mentioned technical proposal, it is equipped with a bar shaped groove above two pieces of side plate side walls, is additionally provided with a pull rod, institute
State the top that pull rod is set to top cross bar, the both ends of the pull rod are each passed through the corresponding bar shaped groove and respective side
It is connected at the top of gag lever post.
In above-mentioned technical proposal, under the spring-compressed state, it is set at the top of the gag lever post at the top of the ladder
Lower section.
In above-mentioned technical proposal, the top of the every side plate is equipped with the support plate extended to the right, the top of the support plate
Setting is flushed at the top of face and the side plate.
In above-mentioned technical proposal, the bottom of every piece of support plate is equipped with a stiffening plate, the stiffening plate and the support
Plate is obliquely installed, and the top of the stiffening plate is connected with the bottom of the support plate, the bottom of the stiffening plate and the side plate
Right side be connected；When the ladder right side is butted on the base top surface, the stiffening plate is set to the right side of the pedestal.
Due to the above technical solutions, the present invention has the following advantages over the prior art:
1. ladder and pedestal are mounted on the bottom of pit in the present invention, ladder is rotatably installed on pedestal, is not being needed
When use, it is only necessary to ladder folding is placed on base top surface, the occupancy in space can be reduced in this way, be suitable for shallow bottom
Hole, will not influence the normal use of elevator, needs in use, only needing to dig ladder on the side wall for leaning against pit, Ji Keshi
The function of existing ladder, practical, the shallow pit small suitable for space uses；
2. limit switch is arranged in the present invention on pedestal, the safety return circuit connection of limit switch and elevator, ladder not
In use, ladder is contacted with limit switch, the safety return circuit of elevator is normal, such elevator can normal use, work as staff
When in pit, ladder is dug, releases the contact with limit switch, the safety return circuit of such elevator will disconnect, elevator
It stops using, can guarantee the safety that staff works in pit；
3. ladder can limit ladder by position-limit mechanism after the flop during use in the present invention,
In this way can the stability that uses of ladder, while after ladder overturning, can using the top of ladder and the setting of support plate, into
One protective effect of row can be limited if fallen under elevator by the top and support plate of ladder, guarantee operator behaviour
The safety of work.
Detailed description of the invention
Fig. 1 is that ladder is pressed in the structural schematic diagram on pedestal in the embodiment of the present invention one；
Fig. 2 is that ladder is against the structural schematic diagram on pit side wall in the embodiment of the present invention one；
Fig. 3 is the schematic cross-sectional view of Fig. 2；
Fig. 4 is the partial enlarged view of Fig. 3；
Fig. 5 is the front structural scheme of mechanism of ladder in the embodiment of the present invention one；
Fig. 6 is the structural schematic diagram after pull rod lifts upwards in Fig. 5 state.
Wherein: 1, pedestal；2, ladder；3, pit；4, shaft；5, installation protrusion；6, groove；7, limit switch；8, lantern ring；
9, stop collar；10, gag lever post；11, spring；12, through-hole；13, limit hole；14, connecting plate；15, side plate；16, cross bar；17, item
Shape through slot；18, pull rod；19, support plate；20, stiffening plate；21, annular protrusion.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and embodiments:
Embodiment one: referring to shown in Fig. 1~6, a kind of shallow pit ladder, including pedestal 1 and ladder 2, the pedestal 1 and
Ladder 2 is installed in pit 3, and the pedestal 1 is installed on the bottom of pit 3, and the bottom of the ladder 2 is rotatablely installed through shaft 4
In the left side of the pedestal 1, the ladder 2 is rotated clockwise, the right side of the ladder 2 is butted on the top surface of the pedestal 1,
The ladder 2 is rotated counterclockwise, the left side of the ladder 2 is butted on the inner wall of the pit 3；It pushes up in the left side of the pedestal 1
Portion is equipped with an installation protrusion 5, and the shaft 4 is installed in the installation protrusion 5；The top right side of the pedestal 1 is equipped with groove
6, a limit switch 7 is installed in the groove 6, the contact of the limit switch 7 exposes to the top of the pedestal 1, described
The right side of ladder 2 can be butted on the contact of the limit switch 7；2 front side of ladder and rear side are respectively equipped with a limit
Mechanism, when the left side of the ladder 2 is butted on 3 inner wall of pit, the ladder 2 is limited through the position-limit mechanism, makes institute
Stating ladder can not rotate around the shaft.
In the present embodiment, under elevator operation, ladder rotation is covered on the top surface of pedestal.Meanwhile limit is opened
Pass is connect with the safety return circuit of elevator, and when ladder is against on the top surface of pedestal, limit switch is touched, and the safety return circuit of elevator connects
Logical, elevator can operate normally.When in use, elevator first runs to top floor, to making elevator stop transport, then operator
Member opens the layer door of bottom, enters and carries out Job Operations in pit.It enters after pit, operator is counterclockwise by ladder
Overturning, is butted on the left side of ladder on the side wall of pit, while position-limit mechanism can limit ladder, prevents ladder from turning
It is dynamic, and after ladder and limit switch disengaging, the safety return circuit of elevator disconnects, and elevator is not available, can guarantee to grasp in this way
Make the safety that personnel operate in pit.After pit work is completed, operator can climb out of staff from ladder
Pit, then operator, which releases limit of the position-limit mechanism to ladder, makes ladder be butted on the top of pedestal ladder urged clockwise
Portion contacts ladder with limit switch, and such elevator can normally be run.
Referring to shown in Fig. 1~6, the middle part of the installation protrusion 5 is equipped with lantern ring 8, the on both sides of the middle of the shaft 4 respectively with
The bottom right of the ladder 2 is fixedly linked, and the middle part turning set of the shaft 4 is set in the lantern ring 8.
Referring to shown in Fig. 1~6, the position-limit mechanism includes stop collar 9, gag lever post 10 and spring 11, the stop collar 9
Outer edge surface is fixedly installed on the side wall of the ladder 2, and the middle part movement of the gag lever post 10 is inserted in the stop collar 9,
The outer edge surface of the gag lever post 10 is equipped with an annular protrusion 21, and the spring 11 is sheathed on the outer edge surface of the gag lever post 10
On, the top of the spring 11 is butted on the bottom surface of the stop collar 9, and the top of the spring 11 is butted on the stop collar 9
On top surface.
The 4 both ends top surface of shaft is equipped with a through-hole 12, and the bottom of the gag lever post 10 is inserted in the through-hole 12,
It is respectively equipped with a limit hole 13 on the both ends top surface of the installation protrusion 5, the side wall of ladder 2 described in 13 face of limit hole is set
It sets.
The ladder is rotated counterclockwise, the left side of the ladder is butted on the inner wall of the pit, and the spring pushes
The bottom of the gag lever post passes through the through-hole and is inserted in the limit hole；The gag lever post is pulled up, the spring is overcome
The bottom of elastic force, the gag lever post can be detached from the limit hole.
In the present embodiment, in normal state, ladder is in the top of pedestal, needs counterclockwise to rotate ladder, make
When ladder is leaned against above pit side wall, ladder is directly overturn, during overturning, if the end of gag lever post touches
When pedestal can not rotate, operator pulls up gag lever post, makes in the bottom crimp to through-hole of gag lever post, continues to rotate,
After through-hole face pedestal, unclamping gag lever post can also rotate even if such gag lever post touches pedestal, work as limit
After bar turns at limit hole, due to the presence of spring, spring will push gag lever post and be butted in limit hole, and this makes it possible to right
Ladder is limited.After operator operates completion in pit, after climbing out of pit using ladder, catch on gag lever post
It draws, so that gag lever post is detached from limit hole, then operator pushes ladder to rotate clockwise, and such ladder can pass through gravity
Direct movement and inclination completes the storage of ladder on pedestal.Wherein, elastic buffer block is set on the top surface of pedestal, is existed in this way
It is buffered when ladder folding storage, prevents from damaging.
Referring to shown in Fig. 5,6, the ladder 2 includes 14, two blocks of side plates 15 of connecting plate and complex root cross bar 16, described in two pieces
The bottom of side plate 15 is installed vertically on the two sides of the connecting plate 14, and cross bar 16 described in complex root is from top to bottom arranged at intervals at two
Between side plate 15 described in block, and the both ends of complex root cross bar 16 are connected with the medial surface of two blocks of side plates 15 respectively, and described turn
The outer edge surface of axis is connected with the bottom of the connecting plate, and the stop collar of position-limit mechanism described in two groups is installed on two blocks of side plates
On side wall.
It is equipped with a bar shaped groove 17 above two pieces of 15 side walls of side plate, is additionally provided with a pull rod 18, the pull rod 18
It is set to the top of top cross bar, the both ends of the pull rod are each passed through the gag lever post of the corresponding bar shaped groove and respective side
Top is connected.
Under the spring-compressed state, the lower section at the top of the ladder is set at the top of the gag lever post.
Wherein, by the setting of pull rod, it is convenient for the lifting of two groups of gag lever posts in this way, catches pull rod, two can be promoted simultaneously
Group gag lever post, overcomes the elastic force of two groups of springs.
Referring to shown in Fig. 1~6, the top of the every side plate 15 is equipped with the support plate 19 extended to the right, the support plate
19 top surface flushes setting with the top of the side plate 15.
The bottom of every piece of support plate 19 is equipped with a stiffening plate 20, and the stiffening plate is obliquely installed with the support plate,
The top of the stiffening plate is connected with the bottom of the support plate, the right side phase of the bottom of the stiffening plate and the side plate
Even；When the ladder right side is butted on the base top surface, the stiffening plate is set to the right side of the pedestal.
In the present embodiment, when ladder is leaned against above pit side wall, ladder, which erects, to be come, while the limit by gag lever post
Position, the position of ladder is fixed.Using the ladder of standing, a protection can be played the role of, even if elevator is fallen, also can
A support enough is carried out using ladder, operator can be protected.Further, setting by support plate and stiffening plate
It sets, the width being capable of increasing after ladder standing comes increases the coverage area to pit, further increases safety.
Claims (10)
1. a kind of shallow pit ladder, it is characterised in that: including pedestal and ladder, the pedestal and ladder are installed in pit,
The pedestal is installed on the bottom of pit, and the bottom of the ladder is rotatablely installed in the left side of the pedestal, clockwise through shaft
The ladder is rotated, the right side of the ladder is butted on the top surface of the pedestal, rotates counterclockwise the ladder, the ladder
Left side be butted on the inner wall of the pit；The left side top of the pedestal is equipped with an installation protrusion, and the shaft is installed on
In the installation protrusion；The top right side of the pedestal is equipped with groove, is equipped with a limit switch, the limit in the groove
The contact of switch exposes to the top of the pedestal, and the right side of the ladder can be butted on the contact of the limit switch；
On front side of the ladder and rear side is respectively equipped with a position-limit mechanism, when the left side of the ladder is butted on the pit inner wall, institute
It states ladder to limit through the position-limit mechanism, rotate the ladder can not around the shaft.
2. shallow pit ladder according to claim 1, it is characterised in that: the middle part of the installation protrusion is equipped with lantern ring,
Bottom right of the on both sides of the middle of the shaft respectively with the ladder is fixedly linked, and the middle part turning set of the shaft is set to institute
It states in lantern ring.
3. shallow pit ladder according to claim 1, it is characterised in that: the position-limit mechanism includes stop collar, limit
Bar and spring, the outer edge surface of the stop collar are fixedly installed on the side wall of the ladder, and the middle part of the gag lever post is mobile to insert
In the stop collar, the outer edge surface of the gag lever post is equipped with an annular protrusion, and the spring pocket is set to the gag lever post
Outer edge surface on, be butted at the top of the spring on the bottom surface of the stop collar, the stop collar be butted at the top of the spring
Top surface on.
4. shallow pit ladder according to claim 3, it is characterised in that: it is logical that the both ends of the shaft top surface is equipped with one
Hole, the bottom of the gag lever post are inserted in the through-hole, are respectively equipped with a limit hole on the both ends top surface of the installation protrusion,
The side wall of ladder described in the limit hole face is arranged.
5. shallow pit ladder according to claim 4, it is characterised in that: rotate counterclockwise the ladder, the ladder
Left side be butted on the inner wall of the pit, the spring push the gag lever post bottom pass through the through-hole be inserted in institute
It states in limit hole；The gag lever post is pulled up, the elastic force of the spring is overcome, the bottom of the gag lever post can be detached from the limit
Hole.
6. shallow pit ladder according to claim 4, it is characterised in that: the ladder includes connecting plate, two blocks of side plates
And complex root cross bar, the bottom of two blocks of side plates are installed vertically on the two sides of the connecting plate, cross bar described in complex root is by upper
It is arranged at intervals under between two blocks of side plates, and the both ends of the complex root cross bar medial surface phase with two blocks of side plates respectively
Even, the outer edge surface of the shaft is connected with the bottom of the connecting plate, and the stop collar of position-limit mechanism described in two groups is installed on two pieces
On the side wall of the side plate.
7. shallow pit ladder according to claim 6, it is characterised in that: be equipped with above two pieces of side plate side walls
One bar shaped groove is additionally provided with a pull rod, and the pull rod is set to the top of top cross bar, and the both ends of the pull rod are each passed through
It is connected at the top of the corresponding bar shaped groove and the gag lever post of respective side.
8. shallow pit ladder according to claim 3, it is characterised in that: under the spring-compressed state, the limit
The lower section at the top of the ladder is set at the top of bar.
9. shallow pit ladder according to claim 6, it is characterised in that: the top of the every side plate, which is equipped with, prolongs to the right
Setting is flushed at the top of the support plate stretched, the top surface of the support plate and the side plate.
10. shallow pit ladder according to claim 9, it is characterised in that: the bottom of every piece of support plate is equipped with one
Stiffening plate, the stiffening plate are obliquely installed with the support plate, and the top of the stiffening plate is connected with the bottom of the support plate,
The bottom of the stiffening plate is connected with the right side of the side plate；It is described when the ladder right side is butted on the base top surface
Stiffening plate is set to the right side of the pedestal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811092083.6A CN109025793A (en) | 2018-09-19 | 2018-09-19 | A kind of shallow pit ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811092083.6A CN109025793A (en) | 2018-09-19 | 2018-09-19 | A kind of shallow pit ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109025793A true CN109025793A (en) | 2018-12-18 |
Family
ID=64617221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811092083.6A Pending CN109025793A (en) | 2018-09-19 | 2018-09-19 | A kind of shallow pit ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109025793A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007276959A (en) * | 2006-04-07 | 2007-10-25 | Mitsubishi Electric Corp | Pit ladder device for elevator |
| JP2010064869A (en) * | 2008-09-11 | 2010-03-25 | Toshiba Elevator Co Ltd | Pit ladder device |
| JP2014218327A (en) * | 2013-05-08 | 2014-11-20 | 三菱電機株式会社 | Pit ladder device of elevator |
| CN205936382U (en) * | 2016-07-25 | 2017-02-08 | 日立电梯（中国）有限公司 | Pit ladder device |
| CN107829673A (en) * | 2017-11-05 | 2018-03-23 | 方松科 | A kind of rope ladder that upper end locking is controlled by bottom |
| CN209354054U (en) * | 2018-09-19 | 2019-09-06 | 通用电梯股份有限公司 | Shallow pit ladder |
-
2018
- 2018-09-19 CN CN201811092083.6A patent/CN109025793A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007276959A (en) * | 2006-04-07 | 2007-10-25 | Mitsubishi Electric Corp | Pit ladder device for elevator |
| JP2010064869A (en) * | 2008-09-11 | 2010-03-25 | Toshiba Elevator Co Ltd | Pit ladder device |
| JP2014218327A (en) * | 2013-05-08 | 2014-11-20 | 三菱電機株式会社 | Pit ladder device of elevator |
| CN205936382U (en) * | 2016-07-25 | 2017-02-08 | 日立电梯（中国）有限公司 | Pit ladder device |
| CN107829673A (en) * | 2017-11-05 | 2018-03-23 | 方松科 | A kind of rope ladder that upper end locking is controlled by bottom |
| CN209354054U (en) * | 2018-09-19 | 2019-09-06 | 通用电梯股份有限公司 | Shallow pit ladder |
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