CN108330984B - Assembled cat ladder with adjustable pedal angle - Google Patents
Assembled cat ladder with adjustable pedal angle Download PDFInfo
- Publication number
- CN108330984B CN108330984B CN201810090620.7A CN201810090620A CN108330984B CN 108330984 B CN108330984 B CN 108330984B CN 201810090620 A CN201810090620 A CN 201810090620A CN 108330984 B CN108330984 B CN 108330984B
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- China
- Prior art keywords
- angle
- rod
- support rod
- pedal
- ladder
- 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.)
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- 241000282326 Felis catus Species 0.000 title description 11
- 238000000034 method Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G27/00—Temporary arrangements for giving access from one level to another for men or vehicles, e.g. steps, ramps
Abstract
The invention provides an assembled ladder with an adjustable pedal angle, which comprises a plurality of sections of ladder standard sections which are assembled and connected in sequence, wherein each ladder standard section comprises side beams arranged on two sides of the ladder, a first support rod, a second support rod and pedals arranged on the first support rod and the second support rod, two ends of the first support rod are respectively hinged with the side beams, the pedals are fixed on the first support rod, the included angle between the pedals and the side beams is the largest angle when a foundation pit is the largest slope expansion coefficient in engineering, the included angle between the pedals and the side beams is the smallest angle when the foundation pit is the smallest slope expansion coefficient, and the connecting points of the second support rod and the side beams are adjustably arranged between line segments which are positioned on the side beams and are cut off by the included angle formed by the largest angle and the smallest angle on parallel lines parallel to the side edges of the side beams. The invention achieves the aim of adjusting the angle between the pedal and the boundary beam by adjusting the position of the second support rod at the bottom of the pedal, and can be applied to foundation pits with various slope releasing coefficients.
Description
Technical Field
The invention relates to the technical field of ladders, in particular to an assembled ladder with an adjustable pedal angle.
Background
In foundation pit engineering, the cat ladder of business turn over foundation pit adopts traditional manual work to set up the scaffold frame generally, and because of its dead weight is big, and the pedal angle can not change the scheduling cause can not reuse after cat ladder transformation position and foundation pit ramp slope coefficient change, all need set up again after demolising, and consuming time and effort, so how can be in the foundation pit re-use of different slope coefficients under the circumstances of not dismouting cat ladder again become an important research topic.
Disclosure of Invention
In view of the above problems, the present invention aims to provide an assembled ladder with an adjustable pedal angle, so as to solve the problem that the ladder in the prior art needs to be disassembled again when being used in foundation pits with different slope laying coefficients.
In order to achieve the above object, the present invention is achieved by the following technical solutions:
the utility model provides an assembled cat ladder of footboard angularly adjustable, its includes the multistage cat ladder standard festival of assembled connection in proper order, every section the cat ladder standard festival is including setting up in the boundary beam of cat ladder both sides, setting up in both sides first bracing piece and second bracing piece between the boundary beam and set up first bracing piece with footboard on the second bracing piece, the both ends of first bracing piece respectively with both sides the boundary beam articulates, the footboard is fixed on the first bracing piece so that first bracing piece rotates thereby drives the footboard rotates, thereby the foundation ditch is when the biggest slope coefficient of putting in the engineering the footboard with contained angle between the boundary beam is the biggest angle, the foundation ditch is when the minimum slope coefficient of putting the footboard with the contained angle between the boundary beam is the minimum angle, the second bracing piece with both sides the tie point of boundary beam is adjustably set up on being located on the boundary beam and with on the parallel line of boundary beam side is parallel through the biggest angle with between a line section of the contained angle that the minimum angle formed.
Preferably, the distance from the hinge point of the first support rod and the boundary beam to one side of the boundary beam is equal to the distance from the connecting point of the second support rod and the boundary beam to the other side of the boundary beam.
Preferably, the side beam is provided with a first through hole, the first through hole is located at a line segment where an included angle formed by the maximum angle and the minimum angle is cut off on the parallel line, two ends of the second support rod are respectively penetrated in the first through hole and connected with the side beam at two sides through fasteners, and two ends of the second support rod are further provided with limiting devices for limiting the second support rod to move in the first through hole.
Preferably, the limiting device comprises a linkage rod and a plurality of gears arranged on the side beam, one end of the linkage rod is connected with the second supporting rod, and the other end of the linkage rod is fixedly connected with one gear among the gears.
Preferably, the plurality of gears are a plurality of second through holes with different heights arranged on the side beam.
Preferably, two adjacent linkage rods are connected by a first connecting rod.
Preferably, a limiting piece is further arranged at the middle position of the bottom surface of the pedal, a third through hole is formed in the limiting piece, and the second support rod is clamped in the third through hole.
Preferably, the length of the third through hole is equal to the length of the first through hole.
Preferably, each standard section of the ladder is further provided with a second connecting rod, one part of the second connecting rod is fixedly connected with the lower part of the standard section of the ladder, and the other part of the second connecting rod is connected with the upper part of the adjacent next section of standard section of the ladder through a fastener.
Preferably, a plurality of railings are arranged on the upper side edge of the side beam at equal intervals. .
Compared with the prior art, the invention has at least the following beneficial effects: according to the invention, the second support rod positions at the bottom of the pedal are controlled through the plurality of interconnected linkage rods, so that the purpose of adjusting the angles of the pedal and the side beams is achieved, the ladder can be applied to foundation pits with various slope laying coefficients, and the foundation pits with different depths can be met through the ladder assembled by the standard sections with various lengths, so that the foundation pits with multiple depths and multiple slope laying coefficients can be used on the premise of not dismantling the ladder, the foundation pits with multiple processes and multiple positions can be reused, the vertical transportation of personnel is met, and meanwhile, the requirements of safe civilized construction standard chemical lands are met.
To the accomplishment of the foregoing and related ends, one or more aspects of the invention comprise the features hereinafter particularly pointed out. The following description and the annexed drawings set forth in detail certain illustrative aspects of the invention. These aspects are indicative, however, of but a few of the various ways in which the principles of the invention may be employed. Furthermore, the invention is intended to include all such aspects and their equivalents.
Drawings
Other objects and attainments together with a more complete understanding of the invention will become apparent and appreciated by referring to the following description taken in conjunction with the accompanying drawings. In the drawings:
fig. 1 is a schematic structural view of an assembled ladder stand according to an embodiment of the invention;
FIG. 2 is a schematic structural view of a standard section of a ladder stand according to the present invention;
FIG. 3 is a schematic view of a limiting device according to the present invention;
FIG. 4 is a schematic view of a first connecting rod according to the present invention;
fig. 5 is a schematic structural view of the limiting plate of the present invention.
The same reference numerals will be used throughout the drawings to refer to similar or corresponding features or functions.
Detailed Description
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, the invention provides an assembled ladder with an adjustable pedal angle, which comprises a plurality of sections of ladder standard sections 1 assembled and connected in sequence, in this embodiment, a second connecting rod (not shown) with the thickness of 5mm and the length of 300mm is arranged at the lower part of each section of ladder standard section 1, one part of the second connecting rod is welded with the section of ladder standard section 1, a plurality of bolt holes are formed in the other part of the second connecting rod along the length direction, and correspondingly, a plurality of bolt holes are also formed in the upper part or the base of the next section of ladder standard section 1, and the plurality of bolts penetrate through the bolt holes in the second connecting rod and the plurality of bolt holes in the next section of ladder standard section 1 to fixedly connect the section of ladder standard section 1 with the next section of ladder standard section 1.
Referring to fig. 2 and 3, each segment of the standard section 1 of the ladder includes side rails 10 disposed at both sides of the ladder, first and second support bars 11 and 12 disposed between the side rails 10 at both sides, and a step 13 disposed on the first and second support bars 11 and 12. Both ends of the first support bar 11 are hinged to the side sills 10, respectively, and the hinge point is located at a distance of 2-5cm from the lower side of the tilting of the side sills 10, preferably, the hinge point is located at a distance of 3cm from the lower side of the tilting of the side sills 10. Specifically, a hole 100 is formed 3cm away from the lower side of the side beam 10, two ends of the first supporting rod 11 respectively penetrate through the holes 100 on the side beams 10 on two sides, and two ends of the first supporting rod 11 are fixed on the side beams 10 on two sides through pins. When the boundary beam 10 forms 45 degrees with the ground, the vertical distance between the hinging points on two adjacent ladder stand standard sections 1 is 200mm. The bottom surface of the pedal 13 is welded and fixed with the first support rod 11, the first support rod 11 is rotated, and the pedal rotates along with the rotation of the first support rod 11.
The side beam 10 is further provided with a first through hole 101, two ends of the second supporting rod 12 respectively penetrate through the first through hole 101 to be connected with the side beams 10 on two sides, specifically, according to the maximum slope expansion coefficient and the minimum slope expansion coefficient which can be met by a foundation pit in engineering, the included angle between the pedal 13 and the side beams 10 is correspondingly referred to as a maximum angle and a minimum angle respectively, the first through hole 101 is provided with a line segment 20 which is formed by the included angle alpha formed by the maximum angle and the minimum angle and is cut on a parallel line 2 which is 2-5cm away from the upper side when the side beam is inclined, in this embodiment, the first through hole 101 is located on the line segment 20 which is formed by the included angle alpha formed by the maximum angle and the minimum angle and is cut on the parallel line 2 which is 3cm away from the upper side when the side beam 10 is inclined, namely the first through hole 101 is a strip-shaped through hole. When the ladder stand is used, the ladder stand is placed in a foundation pit, the first supporting rod 11 is rotated to enable the pedal 13 on the first supporting rod 11 to be kept horizontal with the ground, the positions of the two ends of the second supporting rod 12 in the first through hole 101 are adjusted according to the pedal 13, and the two ends of the second supporting rod 12 are fixed on the boundary beam 10 through bolts. In order to prevent both ends of the second support bar 12 from being displaced in the first through hole 101, both ends of the second support bar 12 are provided with stopper means, respectively. Referring to fig. 3, the limiting device includes a linkage rod 3 and a plurality of gears disposed on the side beam 10, and in this embodiment, the plurality of gears are a plurality of second through holes 102 disposed on the side beam 10 at different heights. One end of the link lever 3 is connected with one end of the second support lever 12, and the other end of the link lever 3 is also provided with a bolt hole which is fixedly connected with one second through hole 102 of the plurality of gear positions by a bolt so that the link lever 3 can fix the end side of the second support lever 12 at a position required in the first through hole 101. As shown in fig. 4, every two adjacent linkage rods 3 are connected through a first connecting rod 4, so that the linkage rods 3 on one side beam 10 of each section of the standard ladder stand section 1 can be adjusted in place at one time. The first connecting rod 4 can be made of a steel plate with the length of 350mm, the width of 40mm and the thickness of 10mm, and the first connecting rod 4 and two adjacent linkage rods 3 can be fixed together in a fastening mode. The pedal 13 is supported by the first support rod 11 and the second support rod 12, and the first support rod 11 is hinged with the side beam 10, in order to make the pedal 13 not easy to be kicked over, a U-shaped limiting plate 5 is welded on the center of the bottom surface of the pedal 13, a third through hole 50 is formed in the limiting plate 5, and the second support rod 12 penetrates through the third through hole 50 and is limited by the limiting plate 5. The length of the third through hole 50 is equal to the length of the first through hole 101 to facilitate the adjustment of the angle of the pedal 13.
In order to improve the safety of the cat ladder, a plurality of rails 6 are respectively welded on the upper side edges of the side beams 10 on two sides of the cat ladder at equal intervals, and the rails 6 are perpendicular to the side beams 10 or the rails 6 are perpendicular to the ground. In this embodiment, a length of 200mm steel pipe with a diameter of 40mm is welded to the upper side edge of the side rail 10 every 1.5m as the base of the balustrade 6.
When the ladder stand of the embodiment is applied, the standard sections of the multi-section ladder stand are assembled and connected so that the standard sections meet the depth requirement of a foundation pit, then according to the slope releasing coefficient of the foundation pit, the first support 11 is rotated so that the pedal 13 on the first support rod 11 is horizontal, and the position of the second support rod 12 in the first through hole 101 is adjusted so that the pedal 13 is kept horizontal under the joint support of the first support rod 11 and the second support rod 12. And adjusting the plurality of linkage rods 3 at the two ends of the second support rod 12, and after the adjustment, fixedly connecting each linkage rod 3 with one second through hole 102 corresponding to a plurality of gears on the boundary beam 10 through bolts, so that the whole adjustment process is finished. According to the invention, the second support rod positions at the bottom of the pedal are controlled through the plurality of interconnected linkage rods, so that the purpose of adjusting the angles of the pedal and the side beams is achieved, the ladder can be applied to foundation pits with various slope laying coefficients, and the foundation pits with different depths can be met through the ladder assembled by the standard sections with various lengths, so that the foundation pits with multiple depths and multiple slope laying coefficients can be used on the premise of not dismantling the ladder, the foundation pits with multiple processes and multiple positions can be reused, the vertical transportation of personnel is met, and meanwhile, the requirements of safe civilized construction standard chemical lands are met.
The assembled ladder according to the present invention with an adjustable pedal angle is described above by way of example with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that various modifications may be made to the assembled ladder described above in which the pedal angle is adjustable without departing from the teachings of the present invention. Accordingly, the scope of the invention should be determined from the following claims.
Claims (5)
1. The assembled ladder stand with the adjustable pedal angle is characterized by comprising a plurality of sections of ladder stand standard sections which are assembled and connected in sequence, wherein each section of ladder stand standard section comprises side beams arranged on two sides of the ladder stand, a first supporting rod, a second supporting rod and pedals arranged on the first supporting rod and the second supporting rod, the first supporting rod and the second supporting rod are arranged between the side beams, and two ends of the first supporting rod are respectively hinged with the side beams on two sides; the side beams are provided with first through holes, the first through holes are positioned at line segments, which are cut off on parallel lines, of included angles formed by the maximum angles and the minimum angles, two ends of the second support rods are respectively penetrated in the first through holes and connected with the side beams at two sides through fasteners, and two ends of the second support rods are also provided with limiting devices for limiting the movement of the second support rods in the first through holes; the limiting device comprises a linkage rod and a plurality of gears arranged on the side beam, wherein the gears are a plurality of second through holes with different heights arranged on the side beam; one end of the linkage rod is connected with the second support rod, the other end of the linkage rod is provided with a bolt hole, the bolt hole is correspondingly fixedly connected with one second through hole in the plurality of gears through a bolt, so that the linkage rod fixes the end side of the second support rod at a position required by the first through hole, every two adjacent linkage rods are connected through a first connecting rod, and one-time adjustment of the linkage rod on one side edge beam of each section of ladder stand standard section is realized; a limiting piece is further arranged in the middle of the bottom surface of the pedal, a third through hole is formed in the limiting piece, and the second support rod is clamped in the third through hole; the pedal is fixed on the first support rod so that the first support rod rotates to drive the pedal to rotate, an included angle between the pedal and the side beams is the largest angle when a foundation pit is the largest slope expansion coefficient in engineering, an included angle between the pedal and the side beams is the smallest angle when the foundation pit is the smallest slope expansion coefficient, and connection points of the second support rod and the side beams on two sides are adjustably arranged between line segments which are positioned on the side beams and are cut off by the included angle formed by the largest angle and the smallest angle on parallel lines which are parallel to the side edges of the side beams;
when the assembled ladder stand with the adjustable pedal angle is applied, the standard sections of the multi-section ladder stand are assembled and connected to meet the depth requirement of a foundation pit, then the first support is rotated to enable the pedal on the first support rod to be horizontal according to the slope release coefficient of the foundation pit, and the position of the second support rod in the first through hole is adjusted to enable the pedal to be kept horizontal under the joint support of the first support rod and the second support rod; and adjusting a plurality of linkage rods at two ends of the second support rod, and after the adjustment is finished, fixedly connecting each linkage rod with one second through hole corresponding to a plurality of gears on the boundary beam through bolts, so that the whole adjustment process is finished.
2. The step angle adjustable modular ladder of claim 1, wherein a distance from a hinge point of the first support bar and the side rail to one side of the side rail is equal to a distance from a connection point of the second support bar and the side rail to the other side of the side rail.
3. The step angle adjustable modular ladder of claim 1, wherein the third through hole has a length equal to the length of the first through hole.
4. The assembled ladder stand with adjustable pedal angle as set forth in claim 1, wherein each of the ladder stand standard sections is further provided with a second connecting rod, a portion of the second connecting rod is fixedly connected with the lower portion of the ladder stand standard section, and another portion of the second connecting rod is connected with the upper portion of the adjacent next ladder stand standard section through a fastener.
5. The step angle adjustable modular ladder of claim 1, wherein a plurality of rails are equally spaced on the upper side of the side rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810090620.7A CN108330984B (en) | 2018-01-30 | 2018-01-30 | Assembled cat ladder with adjustable pedal angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810090620.7A CN108330984B (en) | 2018-01-30 | 2018-01-30 | Assembled cat ladder with adjustable pedal angle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108330984A CN108330984A (en) | 2018-07-27 |
| CN108330984B true CN108330984B (en) | 2024-02-02 |
Family
ID=62926816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810090620.7A Active CN108330984B (en) | 2018-01-30 | 2018-01-30 | Assembled cat ladder with adjustable pedal angle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108330984B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109186923B (en) * | 2018-11-19 | 2020-04-21 | 温州大学瓯江学院 | Device for detecting wind resistance of plate in wind tunnel |
| CN112252769A (en) * | 2020-10-12 | 2021-01-22 | 喻正良 | Temporary passing device for building construction |
| CN115012698A (en) * | 2022-05-19 | 2022-09-06 | 中国建筑第二工程局有限公司 | Steel stair with fastener with pin type clamping piece as main body fastener and installation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2718120Y (en) * | 2004-05-14 | 2005-08-17 | 深圳市中生建实业发展有限公司 | Universal unit assembly type assembling stairway |
| JP3177555U (en) * | 2012-05-28 | 2012-08-09 | 矢橋林業 株式会社 | Assembling staircase |
| CN204059960U (en) * | 2014-07-30 | 2014-12-31 | 西安市建筑工程总公司 | A kind of cast-in-situ stair shaping steel die plate |
| CN105035326A (en) * | 2015-06-19 | 2015-11-11 | 中国航空工业集团公司西安飞机设计研究所 | Pedal angle adjustable-type ladder |
| CN205063797U (en) * | 2015-10-12 | 2016-03-02 | 连云港黄海勘探技术有限公司 | Rig cat ladder of adjustable footboard angle |
| CN205823143U (en) * | 2016-07-14 | 2016-12-21 | 嘉兴市誉高涂料有限公司 | A kind of step ladder |
| CN206625776U (en) * | 2017-03-30 | 2017-11-10 | 浙江科隆五金股份有限公司 | Foldable ladder with illumination functions |
-
2018
- 2018-01-30 CN CN201810090620.7A patent/CN108330984B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2718120Y (en) * | 2004-05-14 | 2005-08-17 | 深圳市中生建实业发展有限公司 | Universal unit assembly type assembling stairway |
| JP3177555U (en) * | 2012-05-28 | 2012-08-09 | 矢橋林業 株式会社 | Assembling staircase |
| CN204059960U (en) * | 2014-07-30 | 2014-12-31 | 西安市建筑工程总公司 | A kind of cast-in-situ stair shaping steel die plate |
| CN105035326A (en) * | 2015-06-19 | 2015-11-11 | 中国航空工业集团公司西安飞机设计研究所 | Pedal angle adjustable-type ladder |
| CN205063797U (en) * | 2015-10-12 | 2016-03-02 | 连云港黄海勘探技术有限公司 | Rig cat ladder of adjustable footboard angle |
| CN205823143U (en) * | 2016-07-14 | 2016-12-21 | 嘉兴市誉高涂料有限公司 | A kind of step ladder |
| CN206625776U (en) * | 2017-03-30 | 2017-11-10 | 浙江科隆五金股份有限公司 | Foldable ladder with illumination functions |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108330984A (en) | 2018-07-27 |
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