CN110344750A - A kind of packaged type step ladder - Google Patents
A kind of packaged type step ladder Download PDFInfo
- Publication number
- CN110344750A CN110344750A CN201910648033.XA CN201910648033A CN110344750A CN 110344750 A CN110344750 A CN 110344750A CN 201910648033 A CN201910648033 A CN 201910648033A CN 110344750 A CN110344750 A CN 110344750A
- Authority
- CN
- China
- Prior art keywords
- ladder
- gag lever
- lever post
- packaged type
- front side
- 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.)
- Pending
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C1/00—Ladders in general
- E06C1/02—Ladders in general with rigid longitudinal member or members
- E06C1/14—Ladders capable of standing by themselves
- E06C1/24—Non-hinged free-standing ladders
- E06C1/26—Non-hinged free-standing ladders in one piece
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C1/00—Ladders in general
- E06C1/02—Ladders in general with rigid longitudinal member or members
- E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
- E06C1/387—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders having tip-up steps
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C1/00—Ladders in general
- E06C1/02—Ladders in general with rigid longitudinal member or members
- E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
- E06C1/397—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders characterised by having wheels, rollers, or runners
Landscapes
- Ladders (AREA)
Abstract
A kind of packaged type step ladder, including ladder, it is characterized by: the front side of the ladder from bottom to top sets gradually several grades of steps, two the first roll wheel assemblies are arranged side by side in bottom on front side of the ladder or so, bottom on rear side of the ladder or so fixed two the second roll wheel assemblies side by side, the same side that the bottom of the ladder is located at the first roll wheel assembly also controls fixed two support columns side by side, the rear end of described two first roll wheel assemblies is fixed together by a crossbeam and passes through height adjustment device to be connected with the bottom of first order step, it is articulated at left and right sides of the both ends of the crossbeam and ladder, the rear side of the first order step also be articulated at left and right sides of ladder, it is flat on ladder and can be upturned on front side of the first order step when rear side pivots.The packaged type step ladder security performance is more preferable.
Description
Technical field
The present invention relates to step ladder technical fields, and in particular to a kind of packaged type step ladder.
Background technique
In Working Life, many places need to carry out operation of ascending a height using step ladder.For the ease of moveable step ladder, one
As can ladder base setting four rolling component pass through the brake gear being arranged on roll wheel assembly when people needs to ascend a height
Roll wheel assembly is locked, to prevent step ladder mobile.
But there are following technical problems for existing packaged type step ladder: once since human negligence is forgotten roller group
Part brakes, and people climbs up step ladder and will slide, and so as to cause danger, therefore needs to design a kind of safety at present
The better packaged type step ladder of performance.
Summary of the invention
The technical problem to be solved by the present invention is providing a kind of better packaged type step ladder of security performance.
The technical solution of the invention is as follows: a kind of packaged type step ladder, including ladder, it is characterised in that: the ladder
The front side of frame from bottom to top sets gradually several grades of steps, and two the first idler wheels are arranged side by side in bottom on front side of the ladder or so
Component, fixed two the second roll wheel assemblies, the bottom of the ladder are located at the first rolling side by side for bottom on rear side of the ladder or so
Fixed two support columns, the rear end of described two first roll wheel assemblies are laterally set by one side by side for the same side of wheel assembly also left and right
It sets the crossbeam in ladder front side bottom and is fixed together and passes through height adjustment device and be connected with the bottom of first order step, it is described
Be articulated at left and right sides of the both ends of crossbeam and ladder, the rear side of the first order step also with the left and right sides phase pivot of ladder
It connects, be flat on ladder on front side of the first order step and can be upturned when rear side pivots, the height adjustment device
Two are laterally installed in including a gag lever post, a pedal, a limit plate and an elastic recovery device, the gag lever post
The front end of first roll wheel assembly, the limit plate be arranged in the rear of gag lever post and be equipped with can positioning limit bar position limiting structure,
Gag lever post mutually separates and is located at the top of position limiting structure with position limiting structure when original state, and the elastic recovery device is obliquely installed
In the front side of gag lever post, the upper end of the limit plate and first order step are connected, and lower end is connected with one end of elastic recovery device,
The other end of the elastic recovery device is connected with ladder, and the pedal is arranged in the front side of gag lever post and is installed in one of them
On first roll wheel assembly, when stepping on pedal in the initial state, gag lever post will be located into the position limiting structure of limit plate and make to prop up
The bottom of dagger is hanging and the front side of first order step tilts, when stepping on first order step that front side tilts or step on pedal again
When gag lever post by the position limiting structure for the limit plate that falls off and make support column arrive to ground to play a supportive role.
The working principle of packaged type step ladder of the present invention is as follows:
When stepping on pedal in the initial state, the first roll wheel assembly is moved downward, and is driven and be installed in the first roll wheel assembly
On gag lever post move downward and navigate in the position limiting structure of limit plate, unclamp pedal after, by elastic recovery device drive limit
Position plate jacks the front side of first order step upwards, so that be upturned on front side of first order step, the first roller group at this time
The bottom of part exceeds the bottom of support column and keeps support column hanging, and such support column loses supporting role, so that it may utilize first
Roll wheel assembly and the second roll wheel assembly keep step ladder mobile；And step on first order step or step on pedal again that front side tilts
When, gag lever post will be disengaged from the position limiting structure of limit plate and move up, and moving up for gag lever post drives the first connected therewith roll wheel assembly
Move up, play a supportive role to make support column that can resist ground, at the same front side tilt first order step again horizontal on ladder,
So as to make one to ascend a height safely without moving.
After adopting the above structure, the invention has the following advantages that
Packaged type step ladder of the present invention can not only be made by stepping on pedal support column vacantly with support two kinds of shapes
Switch under state, and while support column is hanging, also tilt the front side of first order step, on the one hand can make work in this way
Personnel easily determine out that step ladder is currently the state that still can be ascended a height in moveable state, even if on the other hand first
In the case that the front side of grade step tilts, the first roll wheel assembly can also be driven to move down when stepping on first order step and made
Support column resists ground and plays a supportive role, therefore not only has warning function, and can ascend a height under moving condition when can be from turn
The state of ascending a height is changed to, security performance is preferable.
Preferably, the limit plate is arranged in the middle position of first order the bottom of the steps and perpendicular to gag lever post.It should
Setting structure is reasonable, convenient that the position limiting structure matched with gag lever post is arranged on limit plate, and be conducive to the transmitting of power with
And limit plate is to the force of first order step.
Preferably, the position limiting structure is limiting slot.The setting can be such that position limiting structure has the advantages of simple structure and easy realization.
Preferably, the opening size of the limiting slot is greater than the bore of gag lever post.The setting is easy to make gag lever post and limit
Position slot connects or separates.
Preferably, the part that the gag lever post is caught in limiting slot is arranged with flexible protective casing.The setting can protect limit
Bar and limit plate, prevent it to be worn, even if wearing, also only need to change protective case, easy to maintenance and low in cost.
Preferably, the opening size of the limiting slot is greater than the bore of flexible protective casing.The setting is easy to make gag lever post
It is connected or separated with limiting slot.
Preferably, the ladder bottom is respectively arranged on the left side and the right side a fixed plate, the both ends of the crossbeam and first
The rear side of grade step is pivotally connected with the left and right fixed plate of ladder.The setting can be easy to will be in addition to ladder and the second roll wheel assembly
Component is made into an individual module, as long as changing the size of the module in this way, can attach it to different size of ladder
On, it is easy to accomplish the production of scale.
Preferably, the upper end of the limit plate is solid by the bottom of a connecting plate being laterally arranged and first order step
Even.The setting not only makes the connection of limit plate more convenient, but also the intensity of first order step can be made more preferable.
Preferably, the connecting plate is U-board and welds with the bottom of first order step that the upper end of the limit plate is logical
Screw is crossed to be connected with connecting plate.The setting, which can facilitate, is mounted on limit plate on connecting plate, and being convenient for will be screw concealed, makes first
Grade ledge surface finishing is succinct.
Preferably, the elastic recovery device is extension spring.The elastic recovery device structure is simple, at low cost.
Detailed description of the invention:
Fig. 1 is the structural schematic diagram of packaged type step ladder of the present invention；
Fig. 2 is another structural schematic diagram of packaged type step ladder of the present invention；
Fig. 3 is the partial enlargement diagram in Fig. 2 at A；
Fig. 4 is status diagram when packaged type step ladder of the present invention is ascended a height；
Fig. 5 is the partial enlargement diagram in Fig. 4 at B；
Fig. 6 is status diagram when packaged type step ladder of the present invention is mobile；
Fig. 7 is the partial enlargement diagram in Fig. 6 at C；
In figure: 1- ladder, 2- step, the first roll wheel assembly of 3-, the second roll wheel assembly of 4-, 5- support column, 6- crossbeam, 7- high
Spend regulating device, 8- gag lever post, 9- pedal, 10- limit plate, 11- elastic recovery device, 12- position limiting structure, 13- flexible protective
Set, 14- fixed plate, 15- connecting plate.
Specific embodiment
With reference to the accompanying drawing, and in conjunction with the embodiments the present invention is described further.
Embodiment:
A kind of packaged type step ladder, including ladder 1, the front side of the ladder 1 from bottom to top set gradually several grades of platforms
Two the first roll wheel assemblies 3, the bottom or so of 1 rear side of ladder is arranged side by side in rank 2, the bottom or so of 1 front side of ladder
Fixed two the second roll wheel assemblies 4 side by side, the bottom of the ladder 1 are located at the same side also left and right of the first roll wheel assembly 3 side by side
Fixed two support columns 5, the cross that the rear end of described two first roll wheel assemblies 3 is horizontally installed on 1 front side bottom of ladder by one
Beam 6 is fixed together and is connected by height adjustment device 7 with the bottom of first order step 2, the both ends of the crossbeam 6 and ladder
1 left and right sides is articulated, and the left and right sides of the rear side of the first order step 2 also with ladder 1 is articulated, the first order platform
The front side of rank 2 is flat on ladder 1 and can be upturned when rear side pivots, and the height adjustment device 7 includes a limit
8, one, bar, 9, one, pedal limit plate 10 and an elastic recovery device 11, the gag lever post 8 are laterally installed in two first
The front end of roll wheel assembly 3, the limit plate 10 be arranged in the rear of gag lever post 8 and be equipped with can positioning limit bar 8 position limiting structure
12, gag lever post 8 separates and is located at the top of position limiting structure 12, the elastic recovery device with 12 phase of position limiting structure when original state
11 are inclined at the front side of gag lever post 8, and the upper end of the limit plate 10 and first order step 2 are connected, and lower end and elasticity are restored
One end of device 11 is connected, and the other end of the elastic recovery device 11 is connected with ladder 1, and the pedal 9 is arranged in gag lever post 8
Front side and be installed on one of them first roll wheel assembly 3, when stepping on pedal 9 in the initial state, gag lever post 8 be will be located into
In the position limiting structure 12 of limit plate 10 and keep the bottom of support column 5 hanging and the front side tilting of first order step 2, on front side of stepping on
The first order step 2 of tilting or gag lever post 8 by the position limiting structure 12 for the limit plate 10 that falls off and makes support column when stepping on pedal 9 again
5, which arrive to ground, plays a supportive role.
The working principle of packaged type step ladder of the present invention is as follows:
When stepping on pedal 9 in the initial state, the first roll wheel assembly 3 is moved downward, and is driven and be installed in the first roller group
Gag lever post 8 on part 3 is moved downward and is navigated in the position limiting structure 12 of limit plate 10, after unclamping pedal 9, restores dress by elasticity
The front side that 11 driving limit plates 10 jack first order step 2 upwards is set, so that the front side of first order step 2 is upturned,
The bottom of the first roll wheel assembly 3 exceeds the bottom of support column 5 and keeps support column 5 hanging at this time, and such support column 5 loses support and makees
With, so that it may keep step ladder mobile using the first roll wheel assembly 3 and the second roll wheel assembly 4；And step on the first order that front side tilts
Step 2 or when stepping on pedal 9 again, gag lever post 8 will be disengaged from the position limiting structure 12 of limit plate 10 and move up, and gag lever post 8 moves up
It drives the first connected therewith roll wheel assembly 3 to move up, plays a supportive role to make support column 5 that can resist ground, while front side is stuck up
Horizontal is on ladder 1 again for the first order step 2 risen, so as to make one to ascend a height safely without moving.
Packaged type step ladder of the present invention can not only be made by stepping on pedal 9 support column 5 vacantly with support two kinds
Switch under state, and while support column 5 is hanging, also tilt the front side of first order step 2, on the one hand can make in this way
Staff easily determines out that step ladder is currently the state that still can be ascended a height in moveable state, even if on the other hand existing
In the case that the front side of first order step 2 tilts, the first roll wheel assembly 3 can also be driven when stepping on first order step 2
When moving down and so that support column 5 is resisted ground and play a supportive role, therefore not only there is warning function, and can ascend a height under moving condition
It can be automatically switched to the state of ascending a height, security performance is preferable.
Preferably, the limit plate 10 is arranged in the middle position of 2 bottom of first order step and perpendicular to gag lever post
8.The setting structure is reasonable, convenient that the position limiting structure 12 matched with gag lever post 8 is arranged on limit plate 10, and is conducive to power
Transmitting and limit plate 10 to the force of first order step 2.
Preferably, the position limiting structure 12 is limiting slot.The setting can make 12 structure of position limiting structure simple, be easy to real
It is existing.
Preferably, the opening size of the limiting slot is greater than the bore of gag lever post 8.The setting be easy to make gag lever post 8 with
Limiting slot connects or separates.
Preferably, the part that the gag lever post 8 is caught in limiting slot is arranged with flexible protective casing 13.The setting can protect limit
Position bar 8 and limit plate 10, prevent it to be worn, even if wearing, also only need to change protective case, easy to maintenance and cost
It is cheap.
Preferably, the opening size of the limiting slot is greater than the bore of flexible protective casing 13.The setting is easy to make to limit
Bar 8 is connected or separated with limiting slot.
Preferably, 1 bottom of ladder is respectively arranged on the left side and the right side a fixed plate 14, the both ends of the crossbeam 6 and
The rear side of first order step 2 is pivotally connected with the left and right fixed plate 14 of ladder 1.The setting can be easy to that ladder 1 and the second idler wheel will be removed
Component other than component 4 is made into an individual module, as long as changing the size of the module in this way, can attach it to difference
On the ladder 1 of size, it is easy to accomplish the production of scale.
Preferably, the upper end of the limit plate 10 passes through the bottom of the connecting plate 15 being laterally arranged and first order step 2
Portion is connected.The setting not only makes the connection of limit plate 10 more convenient, but also the intensity of first order step 2 can be made more preferable.
Preferably, the connecting plate 15 is U-board and welds with the bottom of first order step 2, the limit plate 10
Upper end is connected by screw with connecting plate 15.The setting, which can facilitate, is mounted on limit plate 10 on connecting plate 15, and is convenient for spiral shell
Nail is hidden, and keeps 2 surface finishing of first order step succinct.
Preferably, the elastic recovery device 11 is extension spring.11 structure of elastic recovery device is simple, cost
It is low.
Claims (10)
1. a kind of packaged type step ladder, including ladder (1), it is characterised in that: the front side of the ladder (1) is from bottom to top successively
Several grades of steps (2) are set, and two the first roll wheel assemblies (3), the ladder is arranged side by side in bottom on front side of the ladder (1) or so
Fixed two the second roll wheel assemblies (4), the bottom of the ladder (1) are located at the first idler wheel side by side for bottom on rear side of frame (1) or so
Fixed two support columns (5), the rear end of described two first roll wheel assemblies (3) pass through side by side for the same side of component (3) also left and right
One crossbeam (6) for being horizontally installed on ladder (1) front side bottom is fixed together and by height adjustment device (7) and first order platform
The bottom of rank (2) is connected, and is articulated at left and right sides of the both ends and ladder (1) of the crossbeam (6), the first order step (2)
Rear side be also articulated at left and right sides of ladder (1), be flat on front side of the first order step (2) on ladder (1) and can
It is upturned when rear side pivots, the height adjustment device (7) includes a gag lever post (8), a pedal (9), a limit
Position plate (10) and an elastic recovery device (11), before the gag lever post (8) is laterally installed in two the first roll wheel assemblies (3)
End, the limit plate (10) setting gag lever post (8) rear and be equipped with can positioning limit bar (8) position limiting structure (12), just
Gag lever post (8) mutually separates and is located at the top of position limiting structure (12) with position limiting structure (12) when beginning state, and the elasticity restores dress
The front side that (11) are inclined at gag lever post (8) is set, the upper end and first order step (2) of the limit plate (10) are connected, lower end
It is connected with one end of elastic recovery device (11), the other end of the elastic recovery device (11) is connected with ladder (1), described to step on
Plate (9) is arranged the front side in gag lever post (8) and is installed on one of them first roll wheel assembly (3), steps in the initial state
When pedal (9), gag lever post (8) will be located into the position limiting structure (12) of limit plate (10) and keep the bottom of support column (5) hanging
And the front side of first order step (2) tilts, when stepping on the first order step (2) or again step on pedal (9) time limit that front side tilts
Position bar (8) is by the position limiting structure (12) of the limit plate that falls off (10) and makes support column (5) arrive to ground to play a supportive role.
2. a kind of packaged type step ladder according to claim 1, it is characterised in that: the limit plate (10) setting is the
The middle position of level-one step (2) bottom and perpendicular to gag lever post (8).
3. a kind of packaged type step ladder according to claim 1, it is characterised in that: the position limiting structure (12) is limit
Slot.
4. a kind of packaged type step ladder according to claim 3, it is characterised in that: the opening size of the limiting slot is big
Bore in gag lever post (8).
5. a kind of packaged type step ladder according to claim 3, it is characterised in that: the gag lever post (8) is caught in limit
The part of slot is arranged with flexible protective casing (13).
6. a kind of packaged type step ladder according to claim 5, it is characterised in that: the opening size of the limiting slot is big
Bore in flexible protective casing (13).
7. a kind of packaged type step ladder according to claim 1, it is characterised in that: the left and right of ladder (1) bottom
Two sides are respectively equipped with a fixed plate (14), the rear side of the both ends of the crossbeam (6) and first order step (2) with ladder (1)
Left and right fixed plate (14) pivot joint.
8. a kind of packaged type step ladder according to claim 1, it is characterised in that: the upper end of the limit plate (10) is logical
The bottom for crossing connecting plate (15) and first order step (2) that one is laterally arranged is connected.
9. a kind of packaged type step ladder according to claim 8, it is characterised in that: the connecting plate (15) is U-board
And welded with the bottom of first order step (2), the upper end of the limit plate (10) is connected by screw with connecting plate (15).
10. a kind of packaged type step ladder according to claim 1, it is characterised in that: the elastic recovery device (11)
For extension spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910648033.XA CN110344750A (en) | 2019-07-17 | 2019-07-17 | A kind of packaged type step ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910648033.XA CN110344750A (en) | 2019-07-17 | 2019-07-17 | A kind of packaged type step ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110344750A true CN110344750A (en) | 2019-10-18 |
Family
ID=68174957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910648033.XA Pending CN110344750A (en) | 2019-07-17 | 2019-07-17 | A kind of packaged type step ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110344750A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116132A (en) * | 2009-12-30 | 2011-07-06 | 上海博途物流设备有限公司 | Positioning device for moveable step ladder |
| CN203145818U (en) * | 2013-03-31 | 2013-08-21 | 肖惠明 | Safe operation ladder convenient to move |
-
2019
- 2019-07-17 CN CN201910648033.XA patent/CN110344750A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116132A (en) * | 2009-12-30 | 2011-07-06 | 上海博途物流设备有限公司 | Positioning device for moveable step ladder |
| CN203145818U (en) * | 2013-03-31 | 2013-08-21 | 肖惠明 | Safe operation ladder convenient to move |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20191018 |
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| WD01 | Invention patent application deemed withdrawn after publication |