CN107512227A - The sequential telescopic formula access step of adjustable in length - Google Patents
The sequential telescopic formula access step of adjustable in length Download PDFInfo
- Publication number
- CN107512227A CN107512227A CN201710685860.7A CN201710685860A CN107512227A CN 107512227 A CN107512227 A CN 107512227A CN 201710685860 A CN201710685860 A CN 201710685860A CN 107512227 A CN107512227 A CN 107512227A
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- Prior art keywords
- joint arm
- level
- hole
- pin
- locking mechanism
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R3/00—Arrangements of steps or ladders facilitating access to or on the vehicle, e.g. running-boards
- B60R3/02—Retractable steps or ladders, e.g. movable under shock
Abstract
The sequential telescopic formula access step of adjustable in length, belongs to access step technical field, and the technical problem solved, which is to provide, a kind of can adapt to two kinds of chassis heights, the access step of working stability, used technical scheme：Total expansion locking mechanism is arranged on the side of level Four joint arm, it is made up of the mounting seat for being fixed on level Four joint arm side and the stop pin for being vertically connected on mounting seat, turnover locking mechanism is arranged on the top of chassis frame, and turnover locking mechanism and nacelle are located at the both sides of one-level joint arm respectively, turnover locking mechanism is made up of spring catch and mounting bracket, one-level joint arm, two level joint arm, three-level joint arm, level Four joint arm is linked in sequence below chassis frame from top to bottom, in one-level joint arm, two level joint arm, three-level joint arm, level Four joint arm is equipped with the pedal above and below for operating personnel, joint arm locking mechanism is provided with one to level Four joint arm pedal bottom both ends, Pyatyi joint arm is standby joint arm, the present invention is applied to the chassis of two kinds of height.
Description
Technical field
The sequential telescopic formula access step of adjustable in length, belongs to access step technical field.
Background technology
Existing access step is mainly made up of upper and lower section of ladder using collapsible.During work, access step is fully deployed, Ren Yuanke
Step on car operation, during withdrawal, first overturn lower section of ladder to folded state around the section of ladder point of rotation, after locking section of ladder lockable mechanism,
Access step is integrally overturn to chassis upper again.Existing access step can only meet low chassis height, during for height disc height, by
Immutable in access step length, now access step is integrally leaned against in contact locking surface, and it is cantilever beam to cause access step stress
Form, when personnel trample, deformation is rocked larger.
The content of the invention
The technical problems to be solved by the invention be to provide it is a kind of can adapt to two kinds of chassis heights, working stability steps on car
Ladder.
In order to solve the above technical problems, the technical solution adopted in the present invention：The sequential telescopic Shi Dengche of adjustable in length
Ladder, including total expansion locking mechanism, turnover locking mechanism, joint arm locking mechanism, one-level joint arm, two level joint arm, three-level joint arm, four
Level joint arm and Pyatyi joint arm；
Total expansion locking mechanism is arranged on the side of level Four joint arm, is made up of stop pin and mounting seat, the mounting seat is consolidated
The side of level Four joint arm is scheduled on, and lockover hole is provided with mounting seat, the stop pin is vertically connected in mounting seat, and
And the flexible lock hole of level Four joint arm side is stuck in after one end stretching of stop pin；
The turnover locking mechanism is arranged on the top of chassis frame, and turnover locking mechanism and nacelle are located at one-level section respectively
The both sides of arm, the turnover locking mechanism are made up of spring catch and mounting bracket, and the mounting bracket is fixed at the top of chassis frame and used
In the joint arms at different levels for placing retracted state, the spring catch, which is arranged at the top of mounting bracket, to be used to consolidate the joint arms at different levels of retracted state
It is scheduled on mounting bracket；
The one-level joint arm, two level joint arm, three-level joint arm, level Four joint arm are linked in sequence below chassis frame from top to bottom,
One-level joint arm, two level joint arm, three-level joint arm, level Four joint arm are equipped with the pedal above and below for operating personnel, in one-level joint arm, two level
Joint arm, three-level joint arm, the pedal bottom both ends of level Four joint arm are provided with joint arm locking mechanism；
The Pyatyi joint arm is standby joint arm, and the first lock hole, the second lock hole, and the first lock are provided with level Four joint arm side
Hole position is determined above the second lock hole, and the Pyatyi joint arm inserts the first lock hole by spring catch or the second lock hole is realized
With the connection of level Four joint arm；
The structure of the joint arm locking mechanism is：Including mounting blocks, (the first back-moving spring, the first end cap, the first roller, locking
Pin, drive pin, second back-moving spring, the second end cap, the second roller, bent plate, joint arm hole and door, the bent plate are fixed on joint arm
Inside side, the spacing hole coordinated with lock pin is provided with bent plate, the mounting blocks are vertically fixed on the side of joint arms at different levels
Outside, a horizontal through hole and a vertical blind hole that position is intersected are provided with the inside of mounting blocks, and in mounting blocks and section
The junction of arm is provided with and allows the joint arm hole that lock pin passes through, and the lock pin is arranged on the horizontal through hole inside mounting blocks, and
The first roller and (the first back-moving spring are provided with the one end of lock pin away from joint arm, and the first roller is located at horizontal through hole with erecting
The intersection of straight blind hole, described (the first back-moving spring one end be connected with locking pin end, the other end and closes the of horizontal through hole
One end cap connects, and the drive pin is arranged on the vertical blind hole inside mounting blocks, and the first roller and drive pin top is oblique
Face is in contact, and the second back-moving spring is enclosed on drive pin bottom, and the upper end of second back-moving spring is with closing vertical blind hole
The second end cap connection, lower end be connected with being located at the door of drive pin bottom, be provided with the second roller in the bottom of the door.
The spring catch includes the second axle sleeve, handle, the second bearing pin, second spring and L-type baffle plate, and the L-type baffle plate is consolidated
It is scheduled at the top of mounting bracket, and L-type baffle plate and the second axle sleeve vertical connection, second axle sleeve are enclosed on outside the second bearing pin, and
And the neck for coordinating installation with handle is provided with one end of the second axle sleeve, it is connected with the second bullet in the middle part of second bearing pin
Spring, lockover hole is stuck in after one end stretching of the second bearing pin, the other end is connected with handle one end, the other end card of the handle
It is connected on the end neck of the second axle sleeve；
The stop pin includes the first axle sleeve, handle, the first bearing pin and the first spring, and first axle sleeve is enclosed on outside the first bearing pin
Portion, and the neck for coordinating installation with handle is provided with one end of the first axle sleeve, the is connected with the middle part of first bearing pin
One spring, flexible lock hole, the other end and handle one end connection of level Four joint arm side are stuck in after one end stretching of the first bearing pin,
The other end of the handle is connected to the end neck of the first axle sleeve.
The present invention working method be：The stop pin of total expansion locking mechanism of the invention uses spring catch form, first axle
Set and the corresponding neck of setting on the first in command, in use, extracting the first in command and rotating, neck mutual dislocation, protect stop pin
Open mode is held, now the first bearing pin is extracted from flexible lock hole, and the joint arms at different levels of access step can complete expanding-contracting action.Step on car
After terraced withdrawal completely, lock pin is stretched out and locked, now the first bearing pin is stepped on through the flexible lock hole in one-level to level Four joint arm
Car ladder will be unable to open.After access step is withdrawn and locked using total expansion locking mechanism completely, access step is overturn to chassis vehicle
Above frame, the handle on turnover locking mechanism is pulled out, when access step is overturn to correct position, unclamps handle, the second bearing pin is worn
Enter the lockover hole on total telescoping mechanism, now access step completes lockover.
The joint arm locking mechanism of the joint arms at different levels of access step：First end cap is connected by screw on mounting blocks, to prevent
(the first back-moving spring is deviate from；Drive pin tip designs have ramp structure, the vertical motion of drive pin can be converted into lock pin
Horizontal movement；First roller is attached by standard bearing pin with lock pin, frictional force during reducing relative motion.Similarly,
Second end cap is connected by screw on mounting blocks, prevents drive pin from deviating from；Second roller, door and drive pin three pass through company
Pin is attached, and the second roller is used to reduce frictional force when moving up between door.
Access step at work, the spacing hole that the lock pin on the joint arm locking mechanism of joint arms at different levels is inserted on bent plate
In, now operating personnel when access step is withdrawn, can be manually pressed by level Four joint arm locking mechanism along access step up to chassis upper
Door, move up drive pin and drive lock pin transverse shifting, until lock pin from the joint arm hole of three-level joint arm take off
Go out, now level Four joint arm unlocks with three-level joint arm, and level Four joint arm can move up, when the pedal and three-level of level Four joint arm
After the contact of joint arm locking mechanism, the drive pin motion of triggering three-level joint arm locking mechanism, make three-level joint arm and two level joint arm arm solution
Except locking；Similarly, after three-level joint arm moves up, triggering two level joint arm unlocks with one-level joint arm, when two level joint arm pedal
After being bonded with one-level joint arm pedal, contraction process is completed.
When access step need of work deploys, level Four joint arm is manually pulled out, now the lock pin in level Four joint arm locking mechanism
Automatically the inclined-plane of bent plate is withdrawn along in three-level joint arm, when lock pin and joint arm hole are to timing, lock pin ejection, is penetrated in hole, this
When three-level joint arm and level Four joint arm mutually locking, pull on level Four joint arm, then take three-level joint arm, two level joint arm and complete out of successively
Into locking, subsequently into the working condition of access step.
Connected between Pyatyi joint arm and level Four joint arm by spring catch mode, spring catch principle and turnover locking mechanism class
Seemingly, under low chassis height, spring catch is located in the first lock hole, when needing to adapt to high chassis height, is manually pulled out shaking hands,
Make spring catch abjection the first locking hole position, now Pyatyi joint arm can slide up and down along on the inside of level Four joint arm, when spring catch enters
After second lock hole, access step reaches high chassis height and locked.
Compared to the prior art the present invention has the advantages that.
First, by setting structure, reasonably total expansion locking mechanism, turnover locking mechanism and joint arm lock machine to the present invention
Structure, the withdrawals of joint arms at different levels and expansion fast power-saving, and access step working stability, safe after deployment.
2nd, Pyatyi joint arm of the invention is standby joint arm, when in face of chassis height higher chassis, passes through spring catch
Pyatyi joint arm is connected with level Four joint arm, can meet the higher bottom of chassis height by stretching out, withdrawing by Pyatyi joint arm
Disk uses, and application is strong.
Brief description of the drawings
Fig. 1 is the schematic diagram of the present invention.
Fig. 2 is that the present invention shrinks fixed schematic diagram.
Fig. 3 is the scheme of installation of total expansion locking mechanism and turnover locking mechanism.
Fig. 4 is the schematic diagram of total expansion locking mechanism locking.
Fig. 5 is the schematic diagram of total expansion locking mechanism unblock.
Fig. 6 is the stereogram of total expansion locking mechanism.
Fig. 7 is the schematic diagram of turnover locking mechanism.
Fig. 8 is the schematic diagram of spring catch in turnover locking mechanism.
Fig. 9 is the connection diagram of Pyatyi joint arm and level Four joint arm.
Figure 10 is the schematic diagram of joint arm locking mechanism.
Figure 11 is the operating diagram of the present invention.
In figure, 1 is one-level joint arm, and 2 be two level joint arm, and 3 be three-level joint arm, and 4 be level Four joint arm, and 5 be Pyatyi joint arm, and 6 are
Turnover locking mechanism, 7 be nacelle, and 8 be chassis frame, and 9 be total expansion locking mechanism, and 10 be joint arm locking mechanism, and 11 be spring
Pin, 12 be the first lock hole, and 13 be the second lock hole, and 14 be pedal, and 61 be spring catch, and 62 be mounting bracket, and 611 be the second axle
Set, 612 be handle, and 613 be the second bearing pin, and 614 be second spring, and 615 be L-type baffle plate, and 91 be stop pin, and 92 be mounting seat,
911 be the first axle sleeve, and 912 be handle, and 913 be the first bearing pin, and 914 be the first spring, and 921 be flexible lock hole, and 922 be upset
Lock hole, 101 be mounting blocks, and 102 be lock pin, and 103 be drive pin, and 104 be (the first back-moving spring, and 105 be the first end cap,
106 be the first roller, and 107 be second back-moving spring, and 108 be the second end cap, and 109 be the second roller, and 110 be bent plate, and 111 be section
Arm aperture, 112 be door.
Embodiment
As Figure 1-Figure 11, the sequential telescopic formula access step of adjustable in length, including total expansion locking mechanism 9, upset
Locking mechanism 6, joint arm locking mechanism 10, one-level joint arm 1, two level joint arm 2, three-level joint arm 3, level Four joint arm 4 and Pyatyi joint arm 5；
Total expansion locking mechanism 9 is arranged on the side of level Four joint arm 4, is made up of stop pin 91 and mounting seat 92, the peace
Dress seat 92 is fixed on the side of level Four joint arm 4, and is provided with lockover hole 922 in mounting seat 92, and the stop pin 91 is vertical
It is connected in mounting seat 92, and the flexible lock hole 921 of the side of level Four joint arm 4 is stuck in after one end stretching of stop pin 91；
The turnover locking mechanism 6 is arranged on the top of chassis frame 8, and turnover locking mechanism 6 and nacelle 7 are located at one respectively
The both sides of level joint arm 1, the turnover locking mechanism 6 are made up of spring catch 61 and mounting bracket 62, and the mounting bracket 62 is fixed on bottom
The top of jiggering frame 8 is used for the joint arms at different levels for placing retracted state, and the spring catch 61 is arranged on the top of mounting bracket 62 and is used to receive
The joint arms at different levels for the state of returning are fixed on mounting bracket 62；
The one-level joint arm 1, two level joint arm 2, three-level joint arm 3, level Four joint arm 4 are linked in sequence under chassis frame from top to bottom
Side, is equipped with the pedal 14 above and below for operating personnel, one in one-level joint arm 1, two level joint arm 2, three-level joint arm 3, level Four joint arm 4
Level joint arm 1, two level joint arm 2, three-level joint arm 3, the bottom both ends of pedal 14 of level Four joint arm 4 are provided with joint arm locking mechanism 10；
The Pyatyi joint arm 5 is standby joint arm, and the first lock hole 12, the second lock hole 13 are provided with the side of level Four joint arm 4, and
First lock hole 12 is located at the top of the second lock hole 13, the Pyatyi joint arm 5 by spring catch 11 insert the first lock hole 12 or
The second lock hole of person 13 realizes the connection with level Four joint arm 4；
The structure of the joint arm locking mechanism 10 is：Including mounting blocks 101, (the first back-moving spring 104, the first end cap 105, first
Roller 106, lock pin 102, drive pin 103, second back-moving spring 107, the second end cap 108, the second roller 109, bent plate 110,
Joint arm hole 111 and door 112, the bent plate 110 are fixed on inside joint arm side, are provided with bent plate 110 and match somebody with somebody with lock pin 102
The spacing hole of conjunction, the mounting blocks 101 are vertically fixed on outside the side of joint arms at different levels, and position is provided with the inside of mounting blocks 101
Put an intersecting horizontal through hole and a vertical blind hole, and be provided with the junction of mounting blocks 101 and joint arm and to allow lock pin
The 102 joint arm holes 111 passed through, the lock pin 102 are arranged on the horizontal through hole inside mounting blocks 101, and in lock pin 102
One end away from joint arm is provided with the first roller 106 and (the first back-moving spring 104, and the first roller 106 be located at horizontal through hole and
The intersection of vertical blind hole, described one end of (the first back-moving spring 104 is connected with the end of lock pin 102, the other end and closing are horizontal
First end cap 105 of through hole connects, and the drive pin 103 is arranged on the vertical blind hole inside mounting blocks 101, and the first roller
106 are in contact with the inclined-plane on the top of drive pin 103, and the second back-moving spring 107 is enclosed on the bottom of drive pin 103, and second
The upper end of back-moving spring 107 is connected with closing the second end cap 108 of vertical blind hole, gear of the lower end with being located at the bottom of drive pin 103
Lid 112 is connected, and the second roller 109 is provided with the bottom of the door 112.
The spring catch 61 includes the second axle sleeve 611, the 612, second bearing pin 613 of handle, second spring 614 and L-type baffle plate
615, the L-type baffle plate 615 is fixed on the top of mounting bracket 62, and the vertical connection of 615 and second axle sleeve of L-type baffle plate 611, described
Second axle sleeve 611 is enclosed on outside the second bearing pin 613, and is provided with one end of the second axle sleeve 611 and is coordinated installation with handle 612
Neck, second spring 614 is connected with the middle part of second bearing pin 613, upset is stuck in after one end stretching of the second bearing pin 613
Lock hole 921, the other end are connected with 612 one end of handle, and the other end of the handle 612 is connected to the end of the second axle sleeve 611
Neck；
The stop pin 91 includes the first axle sleeve 911, handle 912, the first bearing pin 913 and the first spring 914, first axle sleeve
911 are enclosed on outside the first bearing pin 913, and the neck for coordinating installation with handle 912 is provided with one end of the first axle sleeve 911,
The middle part of first bearing pin 913 is connected with the first spring 914, and level Four joint arm 4 one is stuck in after one end stretching of the first bearing pin 913
Flexible lock hole 921, the other end and one end of handle 912 of side connect, and the other end of the handle 912 is connected to the first axle sleeve
911 end neck.
The present invention is the sequential telescopic formula access step of multistage joint arm composition, is working condition after multistage joint arm stretching, is used for
Staff's steps on car operation, and after multistage joint arm withdraws and folded, contraction is fixed between driver's cabin and nacelle, switches to driving
State, it is after multistage joint arm folding is fixed and concordant with the outside of nacelle 7 on chassis frame 8.
Above-described embodiment is the explanation to structure of the present invention and unrestricted, is made without departing from the principles of the present invention
Deformation is also within protection scope of the present invention.
Claims (2)
1. the sequential telescopic formula access step of adjustable in length, it is characterised in that：Including total expansion locking mechanism（9）, lockover
Mechanism（6）, joint arm locking mechanism（10）, one-level joint arm（1）, two level joint arm（2）, three-level joint arm（3）, level Four joint arm（4）With five
Level joint arm（5）；
Total expansion locking mechanism（9）It is arranged on level Four joint arm（4）Side, by stop pin（91）And mounting seat（92）Group
Into the mounting seat（92）It is fixed on level Four joint arm（4）Side, and in mounting seat（92）Provided with lockover hole（922）,
The stop pin（91）It is vertically connected on mounting seat（92）On, and stop pin（91）One end stretch out after be stuck in level Four joint arm
（4）The flexible lock hole of side（921）；
The turnover locking mechanism（6）It is arranged on chassis frame（8）Top, and turnover locking mechanism（6）And nacelle（7）Point
Wei Yu not one-level joint arm（1）Both sides, the turnover locking mechanism（6）By spring catch（61）And mounting bracket（62）Composition, it is described
Mounting bracket（62）It is fixed on chassis frame（8）Top is used for the joint arms at different levels for placing retracted state, the spring catch（61）Set
In mounting bracket（62）Top is used to the joint arms at different levels of retracted state being fixed on mounting bracket（62）；
The one-level joint arm（1）, two level joint arm（2）, three-level joint arm（3）, level Four joint arm（4）It is linked in sequence from top to bottom on chassis
Below vehicle frame, in one-level joint arm（1）, two level joint arm（2）, three-level joint arm（3）, level Four joint arm（4）It is equipped with operating personnel
Under pedal（14）, in one-level joint arm（1）, two level joint arm（2）, three-level joint arm（3）, level Four joint arm（4）Pedal（14）Bottom
Both ends are provided with joint arm locking mechanism（10）；
The Pyatyi joint arm（5）For standby joint arm, in level Four joint arm（4）Side is provided with the first lock hole（12）, the second lock hole
（13）, and the first lock hole（12）Positioned at the second lock hole（13）Top, the Pyatyi joint arm（5）Pass through spring catch（11）Insert
Enter the first lock hole（12）Or second lock hole（13）Realize and level Four joint arm（4）Connection；
The joint arm locking mechanism（10）Structure be：Including mounting blocks（101）, (the first back-moving spring（104）, the first end cap
（105）, the first roller（106）, lock pin（102）, drive pin（103）, second back-moving spring（107）, the second end cap（108）、
Second roller（109）, bent plate（110）, joint arm hole（111）And door（112）, the bent plate（110）It is fixed in joint arm side
Portion, in bent plate（110）On be provided with and lock pin（102）The spacing hole of cooperation, the mounting blocks（101）It is vertically fixed on sections at different levels
Outside the side of arm, in mounting blocks（101）Inside be provided with position intersect a horizontal through hole and a vertical blind hole, and
In mounting blocks（101）It is provided with the junction of joint arm and allows lock pin（102）The joint arm hole passed through（111）, the lock pin（102）
It is arranged on mounting blocks（101）Internal horizontal through hole, and in lock pin（102）One end away from joint arm is provided with the first roller
（106）And (the first back-moving spring（104）, and the first roller（106）It is described positioned at horizontal through hole and the intersection of vertical blind hole
(the first back-moving spring（104）One end and lock pin（102）End connection, the first end cap of the other end and closing horizontal through hole
（105）Connection, the drive pin（103）It is arranged on mounting blocks（101）Internal vertical blind hole, and the first roller（106）With
Drive pin（103）The inclined-plane on top is in contact, the second back-moving spring（107）It is enclosed on drive pin（103）Bottom, and second
Back-moving spring（107）Second end cap of the upper end with closing vertical blind hole（108）Connection, lower end and it is located at drive pin（103）Bottom
The door at end（112）Connection, in the door（112）Bottom be provided with the second roller（109）.
2. the sequential telescopic formula access step of adjustable in length according to claim 1, it is characterised in that：The spring catch
（61）Including the second axle sleeve（611）, handle（612）, the second bearing pin（613）, second spring（614）With L-type baffle plate（615）, institute
State L-type baffle plate（615）It is fixed on mounting bracket（62）Top, and L-type baffle plate（615）With the second axle sleeve（611）Vertical connection, institute
State the second axle sleeve（611）It is enclosed on the second bearing pin（613）Outside, and in the second axle sleeve（611）One end be provided with and handle（612）
Coordinate the neck of installation, in second bearing pin（613）Middle part be connected with second spring（614）, the second bearing pin（613）One
End is stuck in lockover hole after stretching out（921）, the other end and handle（612）One end connects, the handle（612）Other end card
It is connected on the second axle sleeve（611）End neck；
The stop pin（91）Including the first axle sleeve（911）, handle（912）, the first bearing pin（913）With the first spring（914）, institute
State the first axle sleeve（911）It is enclosed on the first bearing pin（913）Outside, and in the first axle sleeve（911）One end be provided with and handle（912）
Coordinate the neck of installation, in first bearing pin（913）Middle part be connected with the first spring（914）, the first bearing pin（913）One
End is stuck in level Four joint arm after stretching out（4）The flexible lock hole of side（921）, the other end and handle（912）One end connects, described
Hand（912）The other end be connected to the first axle sleeve（911）End neck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710685860.7A CN107512227B (en) | 2017-08-11 | 2017-08-11 | Sequential telescopic boarding ladder with adjustable length |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710685860.7A CN107512227B (en) | 2017-08-11 | 2017-08-11 | Sequential telescopic boarding ladder with adjustable length |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107512227A true CN107512227A (en) | 2017-12-26 |
| CN107512227B CN107512227B (en) | 2023-05-30 |
Family
ID=60722002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710685860.7A Active CN107512227B (en) | 2017-08-11 | 2017-08-11 | Sequential telescopic boarding ladder with adjustable length |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107512227B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109264557A (en) * | 2018-12-01 | 2019-01-25 | 江苏汉东机械有限公司 | A kind of staircase for engineering machinery |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000054616A (en) * | 1998-08-10 | 2000-02-22 | Masaru Morino | Telescopic body |
| CN101223332A (en) * | 2005-06-01 | 2008-07-16 | 泰利斯泰普斯股份公司 | Collapsible ladder with locking mechanism |
| CN201116445Y (en) * | 2007-09-07 | 2008-09-17 | 简世坤 | Extension ladder |
| CN202202799U (en) * | 2011-07-28 | 2012-04-25 | 四川航泰航空装备有限公司 | Telescopic ladder |
| CN202300169U (en) * | 2011-07-08 | 2012-07-04 | 王万兴 | Extension ladder with device for preventing hands from being clamped |
| CN203808816U (en) * | 2014-04-25 | 2014-09-03 | 江苏捷诚车载电子信息工程有限公司 | Retractable boarding ladder |
| CN104590135A (en) * | 2015-01-28 | 2015-05-06 | 江苏捷诚车载电子信息工程有限公司 | Folding overturn-type boarding ladder |
-
2017
- 2017-08-11 CN CN201710685860.7A patent/CN107512227B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000054616A (en) * | 1998-08-10 | 2000-02-22 | Masaru Morino | Telescopic body |
| CN101223332A (en) * | 2005-06-01 | 2008-07-16 | 泰利斯泰普斯股份公司 | Collapsible ladder with locking mechanism |
| CN201116445Y (en) * | 2007-09-07 | 2008-09-17 | 简世坤 | Extension ladder |
| CN202300169U (en) * | 2011-07-08 | 2012-07-04 | 王万兴 | Extension ladder with device for preventing hands from being clamped |
| CN202202799U (en) * | 2011-07-28 | 2012-04-25 | 四川航泰航空装备有限公司 | Telescopic ladder |
| CN203808816U (en) * | 2014-04-25 | 2014-09-03 | 江苏捷诚车载电子信息工程有限公司 | Retractable boarding ladder |
| CN104590135A (en) * | 2015-01-28 | 2015-05-06 | 江苏捷诚车载电子信息工程有限公司 | Folding overturn-type boarding ladder |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109264557A (en) * | 2018-12-01 | 2019-01-25 | 江苏汉东机械有限公司 | A kind of staircase for engineering machinery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107512227B (en) | 2023-05-30 |
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