CN202641535U - Drawing type ladder stand for vehicle - Google Patents
Drawing type ladder stand for vehicle Download PDFInfo
- Publication number
- CN202641535U CN202641535U CN 201220283696 CN201220283696U CN202641535U CN 202641535 U CN202641535 U CN 202641535U CN 201220283696 CN201220283696 CN 201220283696 CN 201220283696 U CN201220283696 U CN 201220283696U CN 202641535 U CN202641535 U CN 202641535U
- Authority
- CN
- China
- Prior art keywords
- ladder
- automobile
- slide block
- connecting rod
- pulling type
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 241000282326 Felis catus Species 0.000 claims description 36
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000033001 locomotion Effects 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 10
- 238000000034 method Methods 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C5/00—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles
- E06C5/02—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles with rigid longitudinal members
- E06C5/04—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles with rigid longitudinal members capable of being elevated or extended ; Fastening means during transport, e.g. mechanical, hydraulic
Abstract
The utility model relates to a ladder stand, and in particular relates to a drawing type ladder stand for a vehicle. The drawing type ladder stand for the vehicle comprises a slide block, a slide rail, a left ladder frame, a right ladder frame and footsteps, and is characterized in that the slide block is arranged in the slide rail, the ladder frame comprises an upper support plate, a lower support plate, an upper spandrel girder and a lower spandrel girder, end parts of the upper support plate, the lower support plate, the upper spandrel girder and the lower spandrel girder are hinged mutually to form a parallelogram mechanism integrally, one end of the upper support plate is connected with the slide block, pin holes are uniformly arranged in the ladder frame, a hinged shaft is arranged in each pin hole, and the footsteps are arranged between the left ladder frame and the right ladder frame and are hinged with the ladder frame through an articulated shaft. A guardrail device is arranged on at least one side of the left ladder frame and the right ladder frame. The drawing type ladder stand for the vehicle has the beneficial effects that the footsteps can be always maintained in a horizontal place on platforms with different heights, meanwhile the handrails are unfolded and folded together with the ladder stand, the convenience is brought for use, and safety and reliability are achieved; and the drawing type ladder stand is especially suitable for being used as a vehicle-mounted ladder stand.
Description
Technical field
The utility model relates to a kind of cat ladder technical field, relates in particular to a kind of automobile-used drawing and pulling type cat ladder.
Background technology
Present common in-vehicle ladder has two kinds of fixed ladder, movable ladders, and the former fixedly mounts, and takes up room, and the each use of the latter all needs mobile the installation, uses inconvenient.Although possess ladder also widespread use on the vehicle of various uses of folder function, but existing attic ladder since the limitation of structure remain in some shortcomings: it is narrow at first to be that pedal arranges, when different degree of dip, can not guarantee always level attitude of pedal, use dangerously, the load-bearing dynamics is not enough, is climbing height, is launching alerting ability and also poor in appearance, next is the separately installation of guardrail handrail of attic ladder, and is also very inconvenient in the use.Especially onboard can't combine together with car body during adapted.
The utility model content
The utility model provides a kind of automobile-used drawing and pulling type cat ladder for the awkward deficiency of existing attic ladder.It can easily together with the handrail folding and expanding, guarantee the pedal level attitude in any degree of dip.
The technical solution of the utility model is as follows: a kind of automobile-used drawing and pulling type cat ladder, comprise slide block, slideway, left ladder, right ladder and pedal, it is characterized in that, described slide block is arranged in the described slideway, described ladder comprises upper backup pad, lower supporting plate, upper bearing beam and lower bearing beam, described upper backup pad, lower supporting plate, the end of upper bearing beam and lower bearing beam is hinged, whole formation parallel-crank mechanism, one end of described upper backup pad is connected with described slide block, be evenly equipped with pin-and-hole on the described ladder, be provided with jointed shaft in the described pin-and-hole, described pedal is installed in a described left side, be hinged between the right ladder and by described jointed shaft and described ladder.
The beneficial effects of the utility model are: because the utility model adopts parallelogram sturcutre, each parts is by being articulated and connected, can realize that attic ladder remains level attitude at the expansion process stair treads, thereby make ladder can satisfy the operating needs of differing heights; Also can be to make pedal design wider and do not affect folder function.Easy to use, safe and reliable, be particularly suitable for vehicle-mounted cat ladder.
On the basis of technique scheme, the utility model can also be done following improvement.
Further, at least one side of described left and right ladder is provided with guard bar device, and described guard bar device comprises handrail and main connecting rod, and described main connecting rod and described upper bearing beam, lower bearing beam and handrail are articulated and connected, and forms parallel-crank mechanism.
Adopt the beneficial effect of above-mentioned further scheme to be, when guard bar device launches and be superimposed at ladder, automatically realize guardrail expansion and superimposed, easy to use, and handrail remains and ladder degree of dip keeping parallelism.
Further, on the described main connecting rod with described on the bearing beam place of being hinged be provided with chute.
Adopt the beneficial effect of above-mentioned further scheme to be, when packing up, guard bar device can be servo-actuated more easily at cat ladder.
Further, the bottom of described slide block is provided with roller, and the side of described slide block is provided with slide plate.
Adopt the beneficial effect of above-mentioned further scheme to be, roller design makes cat ladder scaling resistance little, the convenient use.
Further, also be provided with recess on the described bearing beam, described jointed shaft position projection.Described recess is corresponding when cat ladder is packed up with the position of projection.
Adopt the beneficial effect of above-mentioned further scheme to be, the correspondence setting of this recess and projection can make cat ladder when packing up, and projection is mutually chimeric with recess, and it is less to take up room.
Further, described pedal is for adopting the punched-plate flange to make.
Adopt the beneficial effect of above-mentioned further scheme to be, the flange design is not only both artistic and practical, and has strengthened pedal machines intensity.
Further, the bottom of described left and right ladder is provided with pipe.
Adopt the beneficial effect of above-mentioned further scheme to be, this pipe can be used as the handle of artificial scaling cat ladder.
Further, described slideway is provided with the actuating device that promotes described slide block movement.
Further, described actuating device is hydraulic cylinder mechanism or motor drive mechanism.
Adopt the beneficial effect of above-mentioned further scheme to be, adopt actuating device can realize the cat ladder automatic deploying and retracting, especially very necessary for some large-scale cat ladders.
Further, also be provided with auxiliary connecting rod on the described main connecting rod, described auxiliary connecting rod and described main connecting rod are hinged, and described auxiliary connecting rod is parallel with described handrail.
Adopt the beneficial effect of above-mentioned further scheme to be, auxiliary connecting rod is suitable for using at larger cat ladder.
Description of drawings
Fig. 1 is the use status architecture scheme drawing of the automobile-used drawing and pulling type cat ladder of the utility model;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the birds-eye view of Fig. 2;
Fig. 4 is the collapsed state structural representation of the automobile-used drawing and pulling type cat ladder of the utility model;
Fig. 5 is slide block structure scheme drawing of the present utility model.
In the accompanying drawing, the list of parts of each label representative is as follows: 1, lower supporting plate, 2, lower bearing beam, 3, upper bearing beam, 4, pedal, 5, jointed shaft, 6, auxiliary connecting rod, 7, handrail, 8, main connecting rod, 9, upper backup pad, 10, slide plate, 11, roller, 12, slideway, 13, pipe, 14, recess, 15, slide block, 16, chute.
The specific embodiment
Below in conjunction with accompanying drawing principle of the present utility model and feature are described, institute gives an actual example and only is used for explaining the utility model, is not be used to limiting scope of the present utility model.
Arrive shown in Figure 5 such as Fig. 1, a kind of automobile-used drawing and pulling type cat ladder, comprise slide block 15, slideway 12, left ladder, right ladder and pedal 4, described slide block 15 is arranged in the described slideway 12, described ladder comprises upper backup pad 9, lower supporting plate 1, upper bearing beam 3 and lower bearing beam 2, described upper backup pad 9, upper bearing beam 3, lower supporting plate 1, be articulated and connected successively with the end of lower bearing beam 2, whole formation parallel-crank mechanism, one end of described upper backup pad 9 is connected with described slide block 15, be evenly equipped with pin-and-hole on the described ladder, be provided with jointed shaft 5 in the described pin-and-hole, described pedal 4 is installed in a described left side, be hinged with described ladder between the right ladder and by described jointed shaft 5.Described slideway 12 also is provided with positioning plate at the cat ladder exit end.
At least one side of described left and right ladder is provided with guard bar device, and described guard bar device comprises handrail 7 and main connecting rod 8, and described main connecting rod 8 is articulated and connected with described upper bearing beam 3, lower bearing beam 2 and handrail 7, the whole parallel-crank mechanism that forms.
On the described main connecting rod 8 with described on bearing beam 3 places of being hinged be provided with chute 16.
The bottom of described slide block 15 is provided with roller 11, and the side of described slide block 15 is provided with slide plate 10.Slidably cooperate between the upper edge of described slide plate 10 and described slideway 12 and the sidewall.
Also be provided with recess 14 on the described bearing beam, described jointed shaft 5 positions projection.Described recess 14 is corresponding when cat ladder is packed up with the position of projection.
Described pedal 4 is for adopting the punched-plate flange to make.
The bottom of described left and right ladder is provided with pipe 13.
Described slideway 12 is provided with the actuating device that promotes described slide block 15 motions.Described actuating device is hydraulic cylinder mechanism or motor drive mechanism.Such as an end of slideway 12 as described in hydraulic actuating cylinder is fixed on, the piston rod of hydraulic actuating cylinder is connected with described slide block 15, namely can drive the cat ladder automatic deploying and retracting by hydraulic actuating cylinder.
Also be provided with auxiliary connecting rod 6 on the described main connecting rod 8, described auxiliary connecting rod 6 is hinged with described main connecting rod 8, and described auxiliary connecting rod 6 is parallel with described handrail 7.
Principle of work of the present utility model is: when transporting or not using, lift cat ladder by handle, four bearing beams of cat ladder are superimposed, and bearing beam projection and recess 14 cooperate up and down, the pedal 4 superimposed same planes that are in, handrail 7 is equivalent in the cat ladder both sides by bar linkage structure; Ladder enters slideway 12 by slide block 15, and the slide plate 10 of slide block 15 both sides is effectively avoided the collision of ladder and guide rail; Extract cat ladder out slideway 12 by handle during use, slide block 15 moves to slideway positioning plate place and keeps static, handle is positioned over ground, four bearing beams form parallelogram sturcutre take slide block 15 as initial point launch cat ladder, pedal 4 keeps horizontality, in the cat ladder expansion process, ribbed insert is Automatic-expanding under the load-bearing beam action.
Described slideway 12 can be installed in the bottom of vehicle tank, enters when packing up below the casing, does not substantially need independent placement space.
The above only is preferred embodiment of the present utility model, and is in order to limit the utility model, not all within spirit of the present utility model and principle, any modification of doing, is equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (10)
1. automobile-used drawing and pulling type cat ladder, comprise slide block (15), slideway (12), left ladder, right ladder and pedal (4), it is characterized in that, described slide block (15) is arranged in the described slideway (12), described ladder comprises upper backup pad (9), lower supporting plate (1), upper bearing beam (3) and lower bearing beam (2), described upper backup pad (9), lower supporting plate (1), the end of upper bearing beam (3) and lower bearing beam (2) is hinged, whole formation parallel-crank mechanism, one end of described upper backup pad (9) is connected with described slide block (15), be evenly equipped with pin-and-hole on the described ladder, be provided with jointed shaft (5) in the described pin-and-hole, described pedal (4) is installed in a described left side, be hinged between the right ladder and by described jointed shaft (5) and described ladder.
2. automobile-used drawing and pulling type cat ladder according to claim 1, it is characterized in that, at least one side of described left and right ladder is provided with guard bar device, described guard bar device comprises handrail (7) and main connecting rod (8), described main connecting rod (8) is articulated and connected with described upper bearing beam (3), lower bearing beam (2) and handrail (7), forms parallel-crank mechanism.
3. automobile-used drawing and pulling type cat ladder according to claim 2 is characterized in that, described main connecting rod (8) upper with described on bearing beam (3) place of being hinged be provided with chute (16).
4. automobile-used drawing and pulling type cat ladder according to claim 3 is characterized in that, the bottom of described slide block (15) is provided with roller (11), and the side of described slide block (15) is provided with slide plate (10).
5. automobile-used drawing and pulling type cat ladder according to claim 3 is characterized in that, also is provided with recess (14) on the described bearing beam, described jointed shaft (5) position projection.
6. automobile-used drawing and pulling type cat ladder according to claim 3 is characterized in that, described pedal (4) is for adopting the punched-plate flange to make.
7. automobile-used drawing and pulling type cat ladder according to claim 3 is characterized in that, the bottom of described left and right ladder is provided with pipe (13).
8. automobile-used drawing and pulling type cat ladder according to claim 3 is characterized in that, described slideway (12) is provided with the actuating device that promotes described slide block (15) motion.
9. automobile-used drawing and pulling type cat ladder according to claim 8 is characterized in that, described actuating device is hydraulic cylinder mechanism or motor drive mechanism.
10. automobile-used drawing and pulling type cat ladder according to claim 8 is characterized in that, also is provided with auxiliary connecting rod (6) on the described main connecting rod (8), and described auxiliary connecting rod (6) is hinged with described main connecting rod (8), and described auxiliary connecting rod (6) is parallel with described handrail (7).
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 201220283696 CN202641535U (en) | 2012-06-15 | 2012-06-15 | Drawing type ladder stand for vehicle |
PCT/CN2012/078538 WO2013185399A1 (en) | 2012-06-15 | 2012-07-12 | Pull type ladder for vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 201220283696 CN202641535U (en) | 2012-06-15 | 2012-06-15 | Drawing type ladder stand for vehicle |
Publications (1)
Publication Number | Publication Date |
---|---|
CN202641535U true CN202641535U (en) | 2013-01-02 |
Family
ID=47410687
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 201220283696 Expired - Lifetime CN202641535U (en) | 2012-06-15 | 2012-06-15 | Drawing type ladder stand for vehicle |
Country Status (2)
Country | Link |
---|---|
CN (1) | CN202641535U (en) |
WO (1) | WO2013185399A1 (en) |
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CN104553942A (en) * | 2015-01-04 | 2015-04-29 | 无锡市源昌机械制造有限公司 | Folded show car escalator mounting structure |
CN105480241A (en) * | 2016-01-20 | 2016-04-13 | 重庆长客轨道车辆有限公司 | Straddle type monorail vehicle evacuation device |
CN105691308A (en) * | 2016-01-15 | 2016-06-22 | 安徽江淮汽车股份有限公司 | Cargo box boarding device and ladder climbing assembly thereof |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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-
2012
- 2012-06-15 CN CN 201220283696 patent/CN202641535U/en not_active Expired - Lifetime
- 2012-07-12 WO PCT/CN2012/078538 patent/WO2013185399A1/en active Application Filing
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