CN208184632U - A kind of extension ladder - Google Patents
A kind of extension ladder Download PDFInfo
- Publication number
- CN208184632U CN208184632U CN201820415537.8U CN201820415537U CN208184632U CN 208184632 U CN208184632 U CN 208184632U CN 201820415537 U CN201820415537 U CN 201820415537U CN 208184632 U CN208184632 U CN 208184632U
- Authority
- CN
- China
- Prior art keywords
- ladder
- section
- cleat stanchion
- block
- hole
- 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.)
- Active
Links
Landscapes
- Ladders (AREA)
Abstract
The utility model provides a kind of extension ladder, comprising: left cleat stanchion, the left cleat stanchion include several left section of ladders being slidably connected；Right cleat stanchion, the right cleat stanchion include several right section of ladders being slidably connected；Several crosspieces, the both ends of the crosspiece are installed on opposite left section of ladder and right section of ladder；Locking device, the both ends that the locking device is installed on the crosspiece are suitable for locking or unlock two section of ladder interconnected；The lower end of the left cleat stanchion and right cleat stanchion is equipped with the support composition that can be rotated in a vertical plane.The extension ladder has the advantages that using safe, adaptable.
Description
Technical field
The utility model relates to a kind of extension ladder more particularly to a kind of portable stretchable ladders.
Background technique
The ladder occurred on market today can be divided into three classes, respectively non-telescoping vertical ladder, horse ladder and extension ladder.
First two structure is relatively simple, and vertical ladder is generally fixed on vertical bar by mutual approximately parallel vertical bar and at equal intervals
Cross bar constitute, when use, obliquely relies on ladder on a support, people can then step on cross bar and on；And another horse side of the ladder
It is pivotally connected similar to by two vertical ladder on top, when expansion is in A font from the side, in use, can obliquely rely on
It is used on supporter, also deployable stand on ground uses.The third structure of telescopic ladder is then complex, usually using two ladders
Column and a cross bar are mutually socketed to form by connector sleeve one group of step of composition, then by step as multiple groups, therefore, this structure
So that the cleat stanchion on every group of step wants the small function of being just able to achieve socket and stretch with respect to the diameter of the cleat stanchion of its next group of step, and
And locking mechanism is set on the connector sleeve of every group of step, it is locked by cleat stanchion of the locking mechanism to upper one group of step,
Can make extension ladder upon deployment can reach stable, step on to safely step on for user.
For above-mentioned first two ladder, although simply solving the problems, such as to ascend a height, this structure is but occupied largely
Parking space, be unfavorable for carrying.
For third class extension ladder, application number " 201420028686.0 " name in Chinese invention patent application prospectus
Referred to as " a kind of portable stretchable ladder " discloses a kind of portable stretchable ladder, including left and right cleat stanchion and multiple crosspieces, left and right cleat stanchion
It being successively socketed and is formed by the section of ladder that Multi-section retractable folds, each crosspiece is mounted between opposite left and right section of ladder, and the two of crosspiece
End is equipped with bolt and so that bolt is kept the spring of overhanging trend and make the solution lock-switch of bolt unlock, is all provided on corresponding section of ladder
Pin hole, the lower end of the cleat stanchion are equipped with caster device, easy to carry and carrying.
The cleat stanchion of above-mentioned extension ladder is cylindrical section of ladder socket structure, and the diameter of section of ladder is sequentially reduced from bottom to top,
Number of molds needed for this kind of extension ladder production can thus be made increases, and increases production cost and technology difficulty, and this
Length and width after kind extension ladder is packed up is all bigger, not readily portable and collection, also, the lower end of ladder is fixed knot
Structure, when the use of the supporting surface of ladder being non-planar, ladder places shakiness, has security risk.
Utility model content
The utility model is intended to solve one of the above-mentioned problems of the prior art at least to a certain extent, is this this reality
It is to provide a kind of novel extension ladder with first novel purpose.The extension ladder has the advantages that using safe, adaptable.
According to extension ladder provided by the embodiment of the utility model, comprising:
Left cleat stanchion, the left cleat stanchion include several left section of ladders being slidably connected；
Right cleat stanchion, the right cleat stanchion include several right section of ladders being slidably connected；
Several crosspieces, the both ends of the crosspiece are installed on opposite left section of ladder and right section of ladder；
Locking device, the both ends that the locking device is installed on the crosspiece are suitable for locking or unlock two ladder interconnected
Section；
The lower end of the left cleat stanchion and right cleat stanchion is equipped with the support composition that can be rotated in a vertical plane.
According to one embodiment provided by the utility model, the support composition includes:
Pedestal；
Pivot part, the lower end of the pivot part are fixed on the pedestal, and the pivot part is equipped with connecting hole；
Pivotal axis, the pivotal axis be arranged in the connecting hole by the pivot part be pivotally connected to the left cleat stanchion and
The lower end of right cleat stanchion.
According to one embodiment provided by the utility model, the pivot part includes:
Left plate, the left plate are fixed on the upper left side of the pedestal；
And right side plate, the right side plate are fixed on the upper right side of the pedestal；
The left plate and right side plate are arranged in parallel, and the connection hole horizontal penetrates the left plate and right side plate；It is described
Left plate and right side plate are pivotally connected on left cleat stanchion and right cleat stanchion by the connecting hole that pivotal axis passes through on left plate and right side plate.
According to one embodiment provided by the utility model, each left section of ladder is correspondingly arranged with a right section of ladder and structure phase
Together.
According to one embodiment provided by the utility model, each section of ladder include: sliding slot on the inside of the section of ladder and
Guide rail, the sliding slot is connected to the guide rail and the sliding slot is located at the outside of the guide rail；Cunning on the outside of the section of ladder
Rail, the sliding rail are slidably matched in the guide rail for another section of ladder being connected.
According to one embodiment provided by the utility model, the lower end of the section of ladder is equipped with sliding block, and the sliding block is slidably
Be matched in the sliding slot for another section of ladder being connected, the sliding block is connected to the lower end of the sliding rail.
According to one embodiment provided by the utility model, the first side wall and the first bottom wall that the guide rail includes, wherein
It is at an acute angle between the first side wall and the first bottom wall to be connected, and first bottom wall is parallel to the lateral surface of section of ladder.
According to one embodiment provided by the utility model, the sliding slot includes the second sidewall being mutually connected vertically and
Two bottom walls, wherein the second sidewall is connected with first bottom wall, and second bottom wall is parallel to the lateral surface of section of ladder.
According to one embodiment provided by the utility model, the upper end of each section of ladder, which is equipped with, to be suitable for the cap slider position
Upper limit position block, lower end, which is equipped with, to be suitable for the lower position block of the sliding block lower limit, and the upper limit position block and lower position block are fixed
In the sliding slot.
According to one embodiment provided by the utility model, the crosspiece includes:
Left support block, the left support block are fixed on the lower position block of the left section of ladder；
Right support block, the right support block are fixed on the lower position block of the right section of ladder, and with the left support block pair
It should be arranged；
Pedal, the pedal are overlapped in the upper end of the left support block and right support block that are correspondingly arranged.
According to one embodiment provided by the utility model, the left support block and right support block are equipped with first through hole,
The sliding block is equipped with the second through-hole, the first through hole and second through-hole coaxial arrangement, for installing the locking dress
It sets.
According to one embodiment provided by the utility model, the upper end of each section of ladder is equipped with and locking device cooperation
Pin hole.
According to one embodiment provided by the utility model, the locking device includes:
Shell, the shell are fixed in the first through hole, be formed on the shell from the end face of the shell to
The accommodating chamber that enclosure interior extends；
Bolt, one end of the bolt are slidably arranged in the accommodating chamber, and rest part is contained in described first
In through-hole and the second through-hole；
Actuator, the actuator is connect with the bolt is suitable for driving the bolt to slide in the accommodating chamber,
The bolt is set to be embedded in or exit two section of ladders that the pin hole is connected with locking or unlock.
The beneficial effects of the utility model are: according to extension ladder provided by the embodiment of the utility model, comprising: left cleat stanchion,
The left cleat stanchion includes several left section of ladders being slidably connected；Right cleat stanchion, the right cleat stanchion include several right section of ladders being slidably connected；
Several crosspieces, the both ends of the crosspiece are installed on opposite left section of ladder and right section of ladder；Locking device, the locking device installation
It is suitable for locking or unlock two section of ladder interconnected in the both ends of the crosspiece；The lower end of the left cleat stanchion and right cleat stanchion is equipped with
The support composition that can be rotated in a vertical plane.By the constructional simple design to the left section of ladder and right section of ladder, and on a left side
The lower end of cleat stanchion and right cleat stanchion setting support composition, uses the extension ladder in broken terrain, has and use
Safety, adaptable advantage.
Detailed description of the invention
Fig. 1 is the structure chart of the extension ladder provided by the utility model.
Fig. 2 is the three-dimensional structure diagram after the part section of ladder assembly of the extension ladder provided by the utility model.
Fig. 3 is the three-dimensional structure diagram of the section of ladder of the lowermost end of the extension ladder provided by the utility model.
Fig. 4 is the main view after extension ladder part section of ladder connection provided by the utility model.
Fig. 5 is the inside structure schematic diagram of the extension ladder section of ladder provided by the utility model.
Fig. 6 is the outside structure diagram of the extension ladder section of ladder provided by the utility model.
Fig. 7 is the sectional view of the two section of ladder disk of extension ladder cooperation provided by the utility model.
Fig. 8 is the cut-away section structural schematic diagram of Fig. 4.
Fig. 9 is the enlarged drawing of A-A in Fig. 8.
Figure 10 is the three-dimensional structure diagram of crosspiece described in extension ladder provided by the utility model.
Figure 11 is the structural schematic diagram of support composition and crosspiece described in extension ladder provided by the utility model.
The structure chart that the locking device of left and right two of Figure 12 extension ladder provided by the utility model connects together.
Figure 13 is the structural schematic diagram of the locking device of the extension ladder provided by the utility model.
Specific embodiment
The technical issues of in order to keep the utility model solved, technical solution and beneficial effect are more clearly understood, below
In conjunction with accompanying drawings and embodiments, the present invention will be further described in detail.It should be appreciated that specific implementation described herein
Example is only used to explain the utility model, is not used to limit the utility model.
In the description of the present invention, it should be understood that term " on ", "lower", "left", "right" instruction orientation or
Positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing the present invention and simplifying the description,
Rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, because
This should not be understood as limiting the present invention.In addition, defining " first ", the feature of " second " can be expressed or imply
Ground includes one or more of the features；" multiple " refer to two or more.It needs in the description of the present invention,
It is noted that unless otherwise clearly defined and limited, term " setting ", " connection ", " connected " should broadly understood, tool
The set-up mode of body, connection type can be set as the case may be, be not particularly limited, for the ordinary skill people of this field
For member, its concrete meaning in the present invention can be understood as the case may be.
Extension ladder provided by the embodiment of the utility model is specifically described below with reference to Fig. 1-13.
As shown in Figs 1-4, according to extension ladder provided by the embodiment of the utility model, comprising:
Left cleat stanchion, the left cleat stanchion include several left section of ladders 52 being slidably connected, can between two left section of ladder 52 interconnected
With opposite sliding, each section of ladder is mutually unfolded to realize the elongation of left cleat stanchion；
Right cleat stanchion, the right cleat stanchion include several left section of ladders 51 being slidably connected, can between two left section of ladder 51 interconnected
With opposite sliding, each section of ladder is mutually unfolded to realize the elongation of right cleat stanchion；
Several crosspieces 53, the both ends of the crosspiece 53 are installed on opposite left section of ladder 52 and right section of ladder 51, herein, phase
Pair left section of ladder 52 and right section of ladder 51 refer to two section of ladders with same absolute altitude, when extension ladder elongation, crosspiece 53 can be with
It is trampled for user；
Locking device, the both ends that the locking device is installed on the crosspiece 53 are suitable for locking or unlock interconnected two
Section of ladder, herein, in addition to locking device is not installed at 53 both ends of crosspiece being located on the left section of ladder 52 of the lowermost and right section of ladder 51,
It is mounted on the locking device on remaining crosspiece 53, when the two interconnected section of ladder of the locking device locking, each section of ladder is not
It can slide, extension ladder is in elongation state, when the locking device unlocks two interconnected section of ladder, slides between each section of ladder
It realizes and shrinks, extension ladder is in compressive state；
The lower end of the left cleat stanchion and right cleat stanchion is equipped with the support composition 6 that can be rotated in a vertical plane.It herein, " can
Rotate in a vertical plane " refer to: the support composition 6 being installed on left cleat stanchion is located at left 52 institute of section of ladder of left cleat stanchion the lowermost
Any perpendicular in, and can be rotated around the bottom end of the left section of ladder 52；The support composition 6 being installed on right cleat stanchion, position
In in any perpendicular where the right section of ladder of right cleat stanchion the lowermost 51, and can be rotated around the bottom end of the right section of ladder 51；It is left
Two any planes where section of ladder 52 and right section of ladder 51 can be arranged in parallel.The lower end of the support composition 6 can be equipped with anti-
Skidding, to prevent when using the extension ladder, left cleat stanchion and right cleat stanchion and ground skid.It can be around the left cleat stanchion and right cleat stanchion
The setting of the support composition 6 pivoted in vertical plane, allows ladder can be by adjusting when out-of-flatness ground uses
The angle of support composition 6 makes the contact of ladder more evenly with ground, so that ladder more steady, improves the safety of entire extension ladder
Property and adaptability.Herein, it is to be understood that " opposite sliding " is not limited to sliding slot rail structure, is also possible to column type
The structure of sleeve or the relative motion form and structure of piston type, can broadly understood opposite can stretch between two components
Contracting.As shown in figure 3, according to one embodiment provided by the utility model, the support composition 6 includes:
Pedestal 61, pedestal 61 can be set to rectangular or square bulk, naturally it is also possible to be setting for other adaptability
Count shape, non-slip mat has can be set in the bottom end of pedestal 61, to prevent when using the extension ladder, left cleat stanchion and right cleat stanchion with
It skids on ground；
The upper end of the pedestal 61 is fixed in pivot part, the lower end of the pivot part, and the pivot part can be with the bottom
Seat 61 can be integrated, and the seperated design that may be a detachable connection, the pivot part is equipped with connecting hole in order to support
Composition 6 is installed on left cleat stanchion and right cleat stanchion；
Pivotal axis 64, described in the pivotal axis 64 is arranged in the connecting hole and is pivotally connected to support composition 6
The lower end of left cleat stanchion and right cleat stanchion, the pivotal axis 64 easy to support can form 6 pivot.Correspondingly, can be in left cleat stanchion
The structure of the pivotal axis 64 is adapted to the lower end of right cleat stanchion setting connecting hole or connection frame etc., so as to the pivotal axis
64 cooperations.Herein, the pivotal axis 64 can be bolt, is also possible to pin shaft or other are suitable for the support and form 6 pivots
The connector turned.
As shown in figure 3, according to one embodiment provided by the utility model, the pivot part includes:
Left plate 62, the left plate 62 are fixed on the upper left side of the pedestal 61；
With right side plate 63, the right side plate 63 is fixed on the upper right side of the pedestal 61；
The left plate 62 and right side plate 63 are arranged in parallel, and the connection hole horizontal penetrates the left plate 62 and right side plate
63, left plate 62 and right side plate 63 are pivotally connected to by the connecting hole that the pivotal axis 64 passes through on left plate 62 and right side plate 63
On left cleat stanchion and right cleat stanchion.There is certain spacing, such structure can be easy to support group between left plate 62 and right side plate 63
At 6 installation and pivot.When the connecting hole is set to the lower end of the left cleat stanchion and right cleat stanchion, left cleat stanchion and right cleat stanchion can
It is formed between the left plate 62 on 6 and right side plate 63 with being located in the support, pivotal axis 64 is arranged in 62 He of left plate
Connecting hole on right side plate 63 and in the connecting hole of cleat stanchion so that support composition 6 can be rotated around the pivotal axis 64, also or,
When with connection frame perhaps other structures for being adapted to the pivotal axis 64 replace the connecting hole when connection frame or other are suitable
It can be located between the left plate 62 and right side plate 63 on the support composition 6 in the structure for connecting the pivotal axis 64, pivot
Shaft 64 is arranged in the connection frame or other are adapted in the structure of the pivotal axis 64, so that support composition 6 can be around
The pivotal axis 64 rotates.Herein, the left plate 62 and right side plate 63 can be integrated with the pedestal 61, can also be with
For the structure being detachably connected.
Picture 1-4, according to one embodiment provided by the utility model, each left ladder, 52 is corresponding with a right section of ladder 51
It is arranged and structure is identical.
As illustrated in figs. 5-7, according to one embodiment provided by the utility model, the left section of ladder 52 and right section of ladder 51 it is interior
Side is equipped with sliding slot 81 and guide rail 80, and the sliding slot 81 is connected to the guide rail 80 and the sliding slot 81 is located at the outer of the guide rail 80
Side；Outside is equipped with sliding rail 83, and in two section of ladders being connected, the sliding rail 83 positioned at the section of ladder of upside is slidably matched with institute
It states in guide rail 80；
Lower end is equipped with sliding block 84, and in two section of ladders being connected, the sliding block 84 positioned at the section of ladder of upside is slidable
It is matched in the sliding slot 81.The setting and cooperation of the sliding rail 83 and the guide rail 80 can prevent two section of ladder interconnected
Between transverse direction fall off, transverse direction here is the direction perpendicular to section of ladder side；The setting and cooperation of the sliding block 84 and sliding slot 81
Sliding two section of ladders can be oriented to.
As illustrated in figs. 5-7, according to one embodiment provided by the utility model, the guide rail 80 includes the first side wall 801
With the first bottom wall 802, wherein at an acute angle between the first side wall 801 and the first bottom wall 802 be connected, " at an acute angle is connected " is
The angle for referring to 801 place plane of the first side wall and 802 place plane of the first bottom wall is acute angle, and first bottom wall 802 is parallel
In the lateral surface of section of ladder.Such structure can prevent the transverse direction between two section of ladder interconnected from falling off.
As illustrated in figs. 5-7, according to one embodiment provided by the utility model, the sliding slot 81 includes being mutually connected vertically
Second sidewall 812 and the second bottom wall 811, wherein the second sidewall 812 and first bottom wall 802 connection, and described the
Two bottom walls 811 are parallel to the lateral surface of section of ladder.Such structure is conducive to the sliding of sliding block 84, reduces rubbing when sliding block 84 slides
Power is wiped, so that extension ladder is more labor-saving when flexible, helps to improve the experience of user.
As shown in figure 5, according to one embodiment provided by the utility model, the upper end of the left section of ladder 52 and left section of ladder 51
Equipped with the upper limit position block 90 being suitable for 84 upper limit of sliding block, lower end is equipped with the lower limit being suitable for 84 lower limit of sliding block
Block 91, the upper limit position block 90 and lower position block 91 are fixed in the sliding slot 81.The upper limit position block 90 and lower position block 91
Upper limit and lower limit when can be slided to the left section of ladder 52 and left section of ladder 51, to prevent from falling off between two section of ladders.Extension ladder
In elongation, when each section of ladder slides into upper limit, limit is realized in the top of sliding block 84 and the bottom end contact of upper limit position block 90, with
Prevent the section of ladder positioned at upside from skidding off guide rail 80；When extension ladder is shunk, the lower end of sliding block 84 and the upper termination of lower position block 91
Lower limit is realized in touching, meanwhile, the lower end surface of sliding block 84 can protrude from the crosspiece 53 being connected on same section of ladder with sliding block 84
Bottom face, so that having certain gap after limit between two adjacent crosspieces 53, the distance in the gap can be greater than a palm
Thickness, the hand of user is crushed when preventing ladder from shrinking.
As shown in Figure 10, according to one embodiment provided by the utility model, the crosspiece 53 includes:
Left support block 532, the left support block 532 are fixed on the lower position block 91 of the left section of ladder 52；
Right support block 533, the right support block 533 are fixed on the lower position block 91 of the right section of ladder 51, and with it is described
Left support block 532 is correspondingly arranged；
Pedal 531, the pedal 531 are overlapped in the upper end of the left support block 532 and right support block 533 that are correspondingly arranged.It is left
Supporting block 532 and the structure having the same of right support block 533, pedal 531 is provided separately with supporting block, can be in order to entire ladder
The processing and production of son, and be conducive to the installation of locking device.It herein, can be on left support block 532 and right support block 533
Equipped with horizontal bolt hole 550 and vertical screw hole 560, corresponding bolt hole, Ke Yitong can be set on lower position block 91
It crosses bolt left support block 532 and right support block 533 are installed on the lower position block 91, it can be by screw by pedal 531
Peace turns on left support block 532 and right support block 533.It should be noted that left support block 532 and right support block 533 can also be with
It is not fixed on lower position block 91, bolt hole, left support block 532 and the right side can also be directly set on left section of ladder 52 and section of ladder 51
Supporting block 533 can be directly fixed by bolts in the bolt hole on left section of ladder 52 and left section of ladder 51.
As shown in Figure 10, according to one embodiment provided by the utility model, the left support block 532 and right support block
533 are equipped with first through hole 540, and first through hole 540 can be horizontally placed on the left support block 532 and right support block 533
Center, the sliding block 84 be equipped with the second through-hole 85, the first through hole 540 and second through-hole 85 coaxial arrangement, use
In the installation locking device.Setting can be in order to the locking between the installation and each section of ladder of locking device in this way.
As shown in Fig. 2, according to one embodiment provided by the utility model, the upper end of the left section of ladder 52 and right section of ladder 51
It is equipped with the first pin hole 521 and the second pin hole 511 with locking device cooperation.On left section of ladder 52 and left section of ladder 51
Pin hole is arranged can be in order to the locking between each section of ladder, and structure is simple, saves processing and manufacturing and material cost.
The top of one embodiment according to the present utility model, the left section of ladder 52 and left section of ladder 51 can be equipped with rubber pad
Or the protectors such as plastic mattress, protector can play the role of protecting section of ladder internal structure, in addition can also prevent the side of section of ladder from cutting
It hurts sb.'s feelings, while also may make that ladder is more beautiful generous.
As shown in figures 8-13, according to one embodiment provided by the utility model, the locking device includes:
Shell 1, the shell 1 can be fixed on the lower part of left section of ladder 52 and right section of ladder 51, can further be fixed on
In the inner opposite end of the first through hole 540, it is formed with inside from the end face of the shell 1 to shell 1 and prolongs on the shell 1
The accommodating chamber 11 stretched；
Bolt 2, one end of the bolt 2 are slidably arranged in the accommodating chamber 11, and rest part is contained in described
In first through hole 540 and the second through-hole 85；
Actuator 3, the actuator 3 is connect with the bolt 2 is suitable for driving the bolt 2 in the accommodating chamber 11
Sliding, and then make the insertion of the bolt 2 or exit two section of ladders that 2 hole of bolt is connected with locking or unlock.It is such
Locking structure structure is simple, easy to operate, and the use of entire extension ladder can be made more convenient.
Such as Figure 13, further, the locking device further includes elastic component 4, the elastic component 4 and the bolt 2 and shell
Body 1, which is connected, is suitable for driving the bolt 2 to slide in the accommodating chamber 11, and the elastic component 4 and the actuator 3 are right
The bolt 2 provides direction opposite effect power.The effect of opposite direction is provided to bolt 2 by elastic component 4 and actuator 3
Power can make the structure of actuator 3 simpler, and actuator 3 need to provide a unidirectional power drive bolt 2 to a side
To movement.Actuator 3 can drive bolt 2 to move downward, and elastic component 4 can drive bolt 2 to move right at this time；Driving
Part 3 can also drive bolt 2 to move right, and elastic component 4 can drive bolt 2 to move downward at this time, and two ways can be real
The technical principle and scheme of existing the utility model, there is no single restrictions here.
Such as Figure 13, further, the elastic component 4 can be sheathed on the bolt 2, and one end is connected to the shell
On body 1, the other end is connected on the bolt 2.Elastic component 4, which is sheathed on the bolt 2, can provide more stable driving force,
Installation space can be saved simultaneously, to reduce the volume of entire locking device.It equally, can be to slotting after elastic component 4 is fixed
Pin 2 provides leftward or rightward elastic force, and driving force provided by actuator 3 also needs to do the variation of adaptability at this time, need to guarantee bullet
Property part 4 and actuator 3 to bolt 2 provide opposite direction active force.
Such as Figure 13, further, the bolt 2 includes to the sequentially connected glissile segment 21 of from left to right, positioning section 22 and card
Connect section 23；The junction of the glissile segment 21 and positioning section 22 is formed with the first positioning region 221, the positioning section 22 and clamping section
23 junction is formed with the second positioning region 222, and the glissile segment 21 is slidably arranged in the accommodating chamber 11 of the shell 1
Interior, the clamping section 23 cooperates with first pin hole 521 and the second pin hole 511 with locking or the unlock extension ladder,
The elastic component 4 is sheathed on the glissile segment 21 and its right end is connected to first positioning region 221, at this point, elastic component 4 is right
Bolt 2 provides elastic force to the right, and to the left, elastic component 4 has the function of that locking, actuator 3 have solution to the driving force of actuator 3
The effect of lock；Second positioning region 222 cooperates with the inner wall of the left section of ladder 52 and right section of ladder 51.The bolt 2 is set as
Three stage structure, can in order to the installation and positioning of elastic component 4, meanwhile, clamping section 23 can be with the first through hole on extension ladder
521 and second the cooperation of through-hole 511 to realize lockings and unlock to two connected section of ladders, first in clamping section 23 and extension ladder
When pin hole 521 and the second pin hole 511 cooperate, the left section of ladder 52 and right ladder of second positioning region 222 and the extension ladder
The inner wall cooperation of section 51, to prevent bolt 2 from completely disengaging section of ladder under the action of 4 elastic force of elastic component.
According to one embodiment provided by the utility model, the left end of the elastic component 4 is connected to the right side of the shell 1
End.Elastic component interferes the mobile generation of bolt 2 when can prevent bolt 2 from sliding in accommodating chamber 11 in this way.For example, when elasticity
When the left end of part 4 is connected to the inner left wall of accommodating chamber 11, when bolt 2 slides to the left, the left end of bolt 2 is easily produced with elastic component 4
Raw interference.
As shown in Figure 1, the actuator 3 includes bracing wire 31 and driving according to one embodiment provided by the utility model
Block 32, the drive block 32 are set on the glissile segment 21 of the bolt 2, and the left end that the bracing wire 31 passes through the shell 1 connects
In on the drive block 32.Such structure can be fixed on extension ladder in order to locking system, at the same also help reduction at
This.Specifically, drive block 32 can drive bolt 2 to slide to the left end of accommodating chamber 11 when pulling to Zola and moving the bracing wire 31,
Realize the unlock of extension ladder.
As shown in Figure 1, the glissile segment 21 is accommodated equipped with drive block according to one embodiment provided by the utility model
Slot 41 and bracing wire holding tank 42, the drive block holding tank 41 extend inwardly from the surface of the glissile segment 21, the bracing wire
Holding tank 42 extends horizontally to the drive block holding tank 41 and the drive block holding tank from the left side of the glissile segment 21
41 connections, described to be embedded in the drive block holding tank 41 from drive block 32, the bracing wire 31 passes through the bracing wire holding tank
42 and the drive block 32 connect.The design of such structure, can in order to drive block 32 and bracing wire 31 from bolt 2 disassembly with
Installation is further conducive to entire locking device and is fixed on installation on extension ladder, and reduces cost when maintenance.
Specifically, on the left support block 532 and right support block 531 of 51 two sides of the bottom of the left section of ladder 52 and right section of ladder
Two locking devices are respectively arranged in one through-hole 540, the bracing wire 31 of two locking devices links together, and locking device is inserted
The clamping section 23 of pin 2 can protrude from the lateral wall of the left section of ladder 52 and right section of ladder 51 that are connected with crosspiece 53, when positioned at upside
Section of ladder relative to be located at downside section of ladder slide into upper limit when, under the action of 4 elastic force of spring, the sliding of the bolt 2
Section 31 is moved to the right end of accommodating chamber 11, and the clamping section 23 of bolt 2 is connected in first pin hole 521 and the second bolt automatically
In hole 511, locking is realized between two section of ladders, when needing to unlock, pulls the bracing wire 31, bracing wire 31 drives the bolt 2 to appearance
Receive the left end movement of chamber 11, the clamping section 23 of bolt 2 is detached from first pin hole 521 and the second pin hole 511, two section of ladders
Between realize unlock so that shrink.It should be noted that the left end of 2 direction of motion of bolt and right end are shown in Figure 13 here
What direction was described.
According to extension ladder provided by the embodiment of the utility model, comprising:
Left cleat stanchion, the left cleat stanchion include several left section of ladders 52 being slidably connected；Right cleat stanchion, the right cleat stanchion includes several
The right section of ladder 51 being slidably connected；Several crosspieces 53, the both ends of the crosspiece 53 are installed on opposite left section of ladder 52 and right section of ladder 51
On；Locking device, the both ends that the locking device is installed on the crosspiece 53 are suitable for locking or unlock two section of ladder interconnected；
The lower end of the left cleat stanchion and right cleat stanchion is equipped with the support composition 6 that can be rotated in a vertical plane.By to the left section of ladder
52 and right section of ladder 51 constructional simple design, and support composition 6 is set in the lower end of left cleat stanchion and right cleat stanchion, so that this is flexible
Ladder can be used in broken terrain, be had the advantages that using safe, adaptable.
In the description of the present invention, it should be understood that term " on ", "lower", "left", "right", " one end ", " in
Between ", " circumference ", " top ", " bottom end ", " left end ", the instructions such as " right end " orientation or positional relationship be based on the figure
Orientation or positional relationship is merely for convenience of describing the present invention and simplifying the description, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to the utility model
Limitation.
In addition, term " first ", " another " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature." multiple ", " several " are meant that at least two in the description of the present invention,
Such as two, three etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be
Mechanical connection is also possible to be electrically connected or can communicate each other；It can be directly connected, the indirect phase of intermediary can also be passed through
Even, the connection inside two elements or the interaction relationship of two elements be can be, unless otherwise restricted clearly.For this
For the those of ordinary skill in field, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the description of this specification, the description of reference term " one embodiment ", " example " etc. means to combine and be somebody's turn to do
Embodiment or example particular features, structures, materials, or characteristics described are contained at least one embodiment of the utility model
Or in example.In the present specification, the schematic representation of the above terms does not necessarily have to refer to the same embodiment or example.
Moreover, particular features, structures, materials, or characteristics described can be in any one or more of the embodiments or examples with suitable
Mode combines.In addition, without conflicting with each other, those skilled in the art can be by difference described in this specification
The feature of embodiment or example and different embodiments or examples is combined.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are in the scope of the utility model
Inside it can make changes, modifications, alterations, and variations to the above described embodiments.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (13)
1. a kind of extension ladder characterized by comprising
Left cleat stanchion, the left cleat stanchion include several left section of ladders being slidably connected；
Right cleat stanchion, the right cleat stanchion include several right section of ladders being slidably connected；
Several crosspieces, the both ends of the crosspiece are installed on opposite left section of ladder and right section of ladder；
Locking device, the both ends that the locking device is installed on the crosspiece are suitable for locking or unlock two section of ladder interconnected；
The lower end of the left cleat stanchion and right cleat stanchion is equipped with the support composition that can be rotated in a vertical plane.
2. extension ladder according to claim 1, which is characterized in that the support, which forms, includes:
Pedestal；
Pivot part, the lower end of the pivot part are fixed on the pedestal, and the pivot part is equipped with connecting hole；Pivotal axis, institute
It states pivotal axis and is arranged in the lower end that the pivot part is pivotally connected to the left cleat stanchion and right cleat stanchion in the connecting hole.
3. extension ladder according to claim 2, which is characterized in that the pivot part includes:
Left plate, the left plate are fixed on the upper left side of the pedestal；
And right side plate, the right side plate are fixed on the upper right side of the pedestal；
The left plate and right side plate are arranged in parallel, and the connection hole horizontal penetrates the left plate and right side plate；The pivot
Left plate and right side plate are pivotally connected on left cleat stanchion and right cleat stanchion by the connecting hole that axis passes through on left plate and right side plate.
4. extension ladder according to claim 1, which is characterized in that each left section of ladder is correspondingly arranged and ties with a right section of ladder
Structure is identical.
5. extension ladder according to claim 1 or 4, which is characterized in that each section of ladder includes:
Sliding slot and guide rail on the inside of the section of ladder, the sliding slot is connected to the guide rail and the sliding slot is located at the guide rail
Outside；
Sliding rail on the outside of the section of ladder, the sliding rail are slidably matched with the guide rail for another section of ladder being connected
In.
6. extension ladder according to claim 5, which is characterized in that the lower end of the section of ladder is equipped with sliding block, and the sliding block can
Sliding is matched in the sliding slot for another section of ladder being connected, and the sliding block is connected to the lower end of the sliding rail.
7. extension ladder according to claim 6, which is characterized in that the first side wall and the first bottom wall that the guide rail includes,
It is wherein at an acute angle between the first side wall and the first bottom wall to be connected, and first bottom wall is parallel to the lateral surface of section of ladder.
8. extension ladder according to claim 7, which is characterized in that the sliding slot includes the second sidewall being mutually connected vertically
With the second bottom wall, wherein the second sidewall is connected with first bottom wall, and second bottom wall is parallel to the outside of section of ladder
Face.
9. extension ladder according to claim 5, which is characterized in that the upper end of each section of ladder, which is equipped with, to be suitable for on the sliding block
The upper limit position block of limit, lower end are equipped with the lower position block being suitable for the sliding block lower limit, the upper limit position block and lower position block
It is fixed in the sliding slot.
10. extension ladder according to claim 9, which is characterized in that the crosspiece includes:
Left support block, the left support block are fixed on the lower position block of the left section of ladder；
Right support block, the right support block are fixed on the lower position block of the right section of ladder, and corresponding with the left support block are set
It sets；
Pedal, the pedal are overlapped in the upper end of the left support block and right support block that are correspondingly arranged.
11. extension ladder according to claim 10, which is characterized in that the left support block and right support block are equipped with first
Through-hole, the sliding block is equipped with the second through-hole, the first through hole and second through-hole coaxial arrangement, for installing the lock
Determine device.
12. extension ladder according to claim 11, which is characterized in that the upper end of each section of ladder is equipped with and the locking device
The pin hole of cooperation.
13. extension ladder according to claim 12, which is characterized in that the locking device includes:
Shell, the shell are fixed in the first through hole, are formed on the shell from the end face of the shell to shell
The accommodating chamber of internal stretch；
Bolt, one end of the bolt are slidably arranged in the accommodating chamber, and rest part is contained in the first through hole
In the second through-hole；
Actuator, the actuator is connect with the bolt is suitable for driving the bolt to slide in the accommodating chamber, makes institute
It states bolt insertion or exits two section of ladders that the pin hole is connected with locking or unlock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820415537.8U CN208184632U (en) | 2018-03-27 | 2018-03-27 | A kind of extension ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820415537.8U CN208184632U (en) | 2018-03-27 | 2018-03-27 | A kind of extension ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208184632U true CN208184632U (en) | 2018-12-04 |
Family
ID=64437865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820415537.8U Active CN208184632U (en) | 2018-03-27 | 2018-03-27 | A kind of extension ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208184632U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110921364A (en) * | 2019-12-18 | 2020-03-27 | 廖文赟 | Vehicle-mounted butt-joint conveying device |
| CN111114572A (en) * | 2020-01-16 | 2020-05-08 | 广州广冷华旭制冷空调实业有限公司 | Externally hung ladder, sleeping berth and carriage |
| CN112160704A (en) * | 2020-10-10 | 2021-01-01 | 浙江奥鹏工贸有限公司 | Novel bamboo joint ladder |
-
2018
- 2018-03-27 CN CN201820415537.8U patent/CN208184632U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110921364A (en) * | 2019-12-18 | 2020-03-27 | 廖文赟 | Vehicle-mounted butt-joint conveying device |
| CN111114572A (en) * | 2020-01-16 | 2020-05-08 | 广州广冷华旭制冷空调实业有限公司 | Externally hung ladder, sleeping berth and carriage |
| CN112160704A (en) * | 2020-10-10 | 2021-01-01 | 浙江奥鹏工贸有限公司 | Novel bamboo joint ladder |
| CN112160704B (en) * | 2020-10-10 | 2024-04-16 | 浙江奥鹏工贸有限公司 | Novel bamboo joint ladder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208184632U (en) | A kind of extension ladder | |
| EP3207827B1 (en) | Travel bed | |
| CN204846212U (en) | Two -wheeled balance car that can fold up fast | |
| CN201033581Y (en) | Improved dragging frame | |
| CN207561646U (en) | A kind of infanette | |
| CN102824013A (en) | Retractable wheel combination | |
| EP2832253A1 (en) | Pull rod bag with stretchable wheels and wheel stretching operation mechanism | |
| CN205854367U (en) | A kind of electrodynamic balance car | |
| CN107600139A (en) | A kind of multi-functional tortoise car | |
| CN207128278U (en) | A kind of 3D printer disassembled DIY | |
| CN207579894U (en) | A kind of multi-purpose wheelbarrow | |
| CN207403774U (en) | A kind of multi-functional tortoise vehicle | |
| CN203777196U (en) | Movable folding bed | |
| CN201429769Y (en) | Simple support screen structure | |
| CN104594578A (en) | Combined moveable armrest | |
| CN101446176B (en) | Collapsible ladder | |
| CN208486656U (en) | A kind of more adaptive type Hard link safe fences | |
| CN104314376A (en) | Luggage combination lock | |
| CN204527038U (en) | A kind of automobile luggage racks | |
| AT514066A4 (en) | ladder | |
| CN103932853A (en) | Movable folding bed | |
| CN211092976U (en) | Bed fence | |
| CN203064003U (en) | Baby carriage | |
| CN104325903B (en) | Take and have the seat of multiple state for rear row user | |
| CN104957878B (en) | Multifunctional convenient table |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |