CN215565642U - Special portable safe cat ladder of foundation ditch - Google Patents
Special portable safe cat ladder of foundation ditch Download PDFInfo
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- CN215565642U CN215565642U CN202121230032.2U CN202121230032U CN215565642U CN 215565642 U CN215565642 U CN 215565642U CN 202121230032 U CN202121230032 U CN 202121230032U CN 215565642 U CN215565642 U CN 215565642U
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Abstract
The application provides a special portable safety ladder stand for a foundation pit, which comprises a ladder stand upper end structure, a ladder body structure and a ladder stand base, wherein the top of the ladder body structure is fixedly connected with the ladder stand upper end structure; one end of the steel bar fastener penetrates through the through hole, the steel bar fastener is connected with the vertical steel plate through a first bolt, one end of the first U-shaped connecting piece is fixedly arranged on the vertical steel plate, the other end of the first U-shaped connecting piece is connected with the ladder body structure, and the ladder is lighter in weight, regular in size, convenient to transport and assemble and capable of saving field labor; the method is suitable for foundation pits with various depths: according to the utility model, when the height of the ladder stand can be adjusted according to the actual depth of the foundation pit, the angle of the extension piece of the telescopic ladder stand and the angle of the connecting piece at the upper end of the ladder stand can be adjusted; the safety is improved.
Description
Technical Field
The utility model relates to the field of facilities for an upper channel and a lower channel of a foundation pit, in particular to a special portable safety ladder stand for the foundation pit.
Background
In the construction of foundation pit engineering, the ladder stand of upper and lower foundation pit is an indispensable important facility.
The upper and lower foundation pit channels in the prior art mainly comprise bamboo ladders and reinforcing steel bar manufacturing vertical ladders and ladder cages, and the existing foundation pit channels mainly have the following problems that the bamboo ladders and the reinforcing steel bar vertical ladders depend on the side walls and the pit bottoms of the foundation pits, the geological conditions of the pit bottoms of the foundation pits and the temporary excavation faces are poor, the bamboo ladders and the reinforcing steel bar vertical ladders are easy to slip, and the construction period is influenced if a concrete base is poured for geological treatment; bamboo ladder, reinforcing bar erect ladder primary structure step stick are horizontal bamboo, reinforcing bar, and operating personnel need the trick just can accomplish upper and lower foundation ditch process with, and the foundation ditch arouses the incident easily about overcast and rainy weather, operating personnel carry some instruments. The force analysis of the ladder cage can be known as follows: ladder cage dead weight, ladder cage bear live load and are transmitted by the foundation contact surface bearing at the bottom of the pit through the ladder cage, and the ladder cage is from great, the geological conditions at the bottom of the pit is poor, need pour the concrete base before the installation ladder cage just can satisfy its bearing demand, accomplish from pouring the concrete base to the ladder cage installation and occupy about 7 days of time limit for a project, have seriously influenced the progress of linear foundation ditch construction. Ladder cage is mill's customization processing, and every section ladder cage height-fixing, the different degree of depth demands of foundation ditch that ladder cage highly does not match for solving this problem, need set up interim framed bent from foundation ditch edge to ladder cage main part, and form, height, length are unset are set up to interim framed bent, have certain potential safety hazard scheduling problem.
Therefore, the seeking of the portable safety ladder special for the foundation pit becomes a problem to be solved urgently.
SUMMERY OF THE UTILITY MODEL
For solving above-mentioned technical problem, this application improves a special portable safe cat ladder of foundation ditch.
A portable safety ladder stand special for a foundation pit comprises a ladder stand upper end structure, a ladder body structure and a ladder stand base, wherein the top of the ladder body structure is fixedly connected with the ladder stand upper end structure; the through-hole is passed to rebar fastener's one end, rebar fastener pass through first bolt with found the steel sheet and be connected, the one end of first U-shaped connecting piece is fixed to be set up found on the steel sheet, the other end of first U-shaped connecting piece with ladder body structural connection.
Preferably, the ladder body structure includes first steel side pipe ladder roof beam and second steel side pipe ladder roof beam of mutual parallel arrangement, first steel side pipe ladder roof beam with it marks time to be provided with the decorative pattern steel sheet between second steel side pipe ladder roof beam, first steel side pipe ladder roof beam with all be provided with the stand on the second steel side pipe ladder roof beam, the quantity of stand is a plurality of, and the fixed handrail that is provided with on the stand of establishing.
Preferably, a second U-shaped connecting piece is arranged on the side face of the ladder body structure, a stand column structure is arranged on the second U-shaped connecting piece, and the bottom of the stand column structure is arranged on the ladder stand base.
Preferably, first steel side pipe ladder roof beam with all be provided with the through-hole on the second steel side pipe ladder roof beam, the decorative pattern steel sheet mark time through the second bolt respectively with first steel side pipe ladder roof beam with second steel side pipe ladder roof beam is connected.
The beneficial effect of this application:
1. the ladder stand is lighter in weight, regular in size, convenient to transport and assemble and capable of saving field labor;
2. the method is suitable for foundation pits with various depths: according to the utility model, when the height of the ladder stand can be adjusted according to the actual depth of the foundation pit, the angle of the extension piece of the telescopic ladder stand and the angle of the connecting piece at the upper end of the ladder stand can be adjusted;
3. improve cat ladder security: the upper end structure of the crawling ladder is connected with the ladder body structure through a first U-shaped connecting piece, and the upper end structure of the crawling ladder is connected with the foundation pit supporting beam and the crown beam together, so that the overall structure of the crawling ladder is safer; through adjustment cat ladder upper end connecting piece angle, the angle of marking time remains throughout and makes the angle of marking time more accord with the human demand at horizontal position, and the cat ladder is safer about operating personnel.
4. The occupied construction period is shortened: the ladder stand base adopts the steel plate as an enlarged foundation, and the ladder stand is suitable for temporary excavation surfaces of various geological foundation pits and various geological foundation pits. In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without any creative effort.
Drawings
FIG. 1 is the structural schematic diagram of the special portable safety ladder stand for foundation pit that this application provided.
Fig. 2 is a schematic structural diagram of the upper end of the ladder provided by the application.
The ladder comprises a ladder stand, a ladder body, a ladder stand base, a 4-upright post structure, a steel plate, a reinforcing steel fastener, a first U-shaped connecting piece, a first bolt, a second U-shaped connecting piece, a first steel square tube ladder beam, a second steel square tube ladder beam, a 23-patterned steel plate step, a 24-upright post, a 25-armrest and a 26-second bolt, wherein the ladder stand comprises a ladder stand upper end structure 1, a ladder body structure 2, a ladder stand base 3, an upright post structure 4, a steel plate 11, a steel bar fastener 12, a first U-shaped connecting piece, a first bolt 14, a second U-shaped connecting piece 15, a first steel square tube ladder beam 21, a second steel square tube ladder beam 22, a patterned steel plate step 23, an upright post 24, an armrest 25 and a second bolt.
Detailed Description
Referring to fig. 1, for this application provides a portable safe cat ladder's special purpose in foundation ditch structure sketch map.
Referring to fig. 2, a schematic structural diagram of the upper end of the ladder stand is provided in the present application.
A portable safety ladder stand special for a foundation pit comprises a ladder stand upper end structure 1, a ladder body structure 2 and a ladder stand base 3, wherein the top of the ladder body structure 2 is fixedly connected with the ladder stand upper end structure 1, the ladder stand base 3 is fixedly arranged on the ground plane, the ladder stand upper end structure 1 comprises a vertical steel plate 11, a reinforcing steel bar fastener 12 and a first U-shaped connecting piece 13, and the effects of stable connection and ladder stand rotation are achieved; the vertical steel plate 11 is provided with a through hole; the through-hole is passed to rebar fastener 12's one end, rebar fastener 12 through first bolt 14 with found steel sheet 11 and be connected, the one end of first U-shaped connecting piece 13 is fixed to be set up found on the steel sheet 11, the other end of first U-shaped connecting piece 13 with ladder body structure 2 is connected. The steel bar fastening piece 12 is an L-shaped fastening piece, the L-shaped fastening piece is formed by bending and anchoring HPB300 phi 20 round steel, the length of the bent anchor is consistent with the height of the foundation pit crown beam and the support beam, the length of the carved thread at the other end of the L-shaped fastening piece is not less than 10cm, the carved thread end of the L-shaped fastening piece penetrates through a 0.5cm thick steel plate to be drilled and fixed by using a nut, and the L-shaped fastening piece and the 0.5 thick steel plate form a U-shaped structure and are fastened on the foundation pit crown beam and the foundation pit support beam.
The ladder stand base and the ladder beam are connected in a socket joint mode and penetrate through the reserved drilled holes through bolts to fix the two parts, the ladder stand base is composed of a U-shaped connecting piece, a socket joint pipe and a 1cm steel plate, the U-shaped connecting piece and the 1cm steel plate are connected in a welding mode, and the U-shaped connecting piece and the socket joint pipe are fixed through bolts.
The patterned steel plate stepping structure comprises a ladder stand, wherein the ladder stand is in one-way passage, the stepping width of the ladder stand is 60cm, the ladder stand is stepped by adopting a threaded steel plate to be bent into a Z shape, two pieces of HPB300 phi 15 round steel are welded at the bottom of the step to serve as stepping bearing main ribs, both ends of the stepping bearing main ribs are all carved with threads, the length of the carved threads is not less than 10cm, and the stepping bearing main ribs penetrate through a ladder beam to reserve holes and are fixed on two sides of the ladder beam through nuts when a ladder body is assembled.
Ladder body structure, ladder body adopt 70X 50X 5 steel square pipe, 60X 40X 5 steel square pipe to constitute and extend the ladder roof beam, for increasing ladder roof beam extension length, the ladder roof beam adopts two kinds of sizes rigid square pipe sockets and spigot joints together, and the ladder roof beam all has the reservation drilling, adopts the bolt to link together steel square pipe after reaching demand length.
Preferably, the ladder body structure 2 includes first steel side pipe ladder beam 21 and second steel side pipe ladder beam 22 of mutual parallel arrangement, first steel side pipe ladder beam 21 with it marks time 23 to be provided with the decorative pattern steel sheet between second steel side pipe ladder beam 22, first steel side pipe ladder beam 21 with all be provided with stand 24 on the second steel side pipe ladder beam 22, stand 24's quantity is a plurality of, and the fixed handrail 25 that is provided with on the stand 24 of establishing.
Preferably, a second U-shaped connecting piece 15 is arranged on the side surface of the ladder body structure 2, a column structure 4 is arranged on the second U-shaped connecting piece 15, and the bottom of the column structure 4 is arranged on the ladder stand base 3. The effects of stable connection and rotation of the ladder stand are achieved. The stand structure is cat ladder bearing stand, adopts to extend the structural formula when the ladder roof beam, at ladder roof beam linkage segment welding U type connecting piece, and U type connecting piece, cat ladder bearing stand adopt the socket joint mode equipment and adopt the bolt to pass and reserve the hole on constructing the accessory and fix, and bearing pole setting bottom sets up the cat ladder base, but increases the bearing capacity of cat ladder body through cat ladder bearing stand.
Preferably, the first steel square pipe ladder beam 21 and the second steel square pipe ladder beam 22 are all provided with through holes, the pattern steel plate step 23 is respectively connected with the first steel square pipe ladder beam 21 and the second steel square pipe ladder beam 22 through a second bolt 26.
The beneficial effect of this application:
1. the ladder stand is lighter in weight, regular in size, convenient to transport and assemble and capable of saving field labor;
2. the method is suitable for foundation pits with various depths: according to the utility model, when the height of the ladder stand can be adjusted according to the actual depth of the foundation pit, the angle of the extension piece of the telescopic ladder stand and the angle of the connecting piece at the upper end of the ladder stand can be adjusted;
3. improve cat ladder security: the upper end structure of the crawling ladder is connected with the ladder body structure through a first U-shaped connecting piece, and the upper end structure of the crawling ladder is connected with the foundation pit supporting beam and the crown beam together, so that the overall structure of the crawling ladder is safer; through adjustment cat ladder upper end connecting piece angle, the angle of marking time remains throughout and makes the angle of marking time more accord with the human demand at horizontal position, and the cat ladder is safer about operating personnel.
4. The occupied construction period is shortened: the ladder stand base adopts the steel plate as an enlarged foundation, and the ladder stand is suitable for temporary excavation surfaces of various geological foundation pits and various geological foundation pits.
Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the utility model disclosed herein. This application is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the utility model and including such departures from the present disclosure as come within known or customary practice within the art to which the utility model pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the utility model being indicated by the following claims.
It will be understood that the utility model is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.
Claims (4)
1. A portable safety ladder stand special for a foundation pit is characterized by comprising a ladder stand upper end structure (1), a ladder body structure (2) and a ladder stand base (3), wherein the top of the ladder body structure (2) is fixedly connected with the ladder stand upper end structure (1), the ladder stand base (3) is fixedly arranged on the ground plane, the ladder stand upper end structure (1) comprises a vertical steel plate (11), a reinforcing steel fastener (12) and a first U-shaped connecting piece (13), and the vertical steel plate (11) is provided with a through hole; the one end of rebar fastener (12) passes the through-hole, rebar fastener (12) through first bolt (14) with found steel sheet (11) and connect, the one end of first U-shaped connecting piece (13) is fixed to be set up found on steel sheet (11), the other end of first U-shaped connecting piece (13) with ladder body structure (2) are connected.
2. The portable safety ladder stand special for the foundation pit as claimed in claim 1, wherein the ladder body structure (2) comprises a first steel square tube ladder beam (21) and a second steel square tube ladder beam (22) which are arranged in parallel, a patterned steel plate step (23) is arranged between the first steel square tube ladder beam (21) and the second steel square tube ladder beam (22), the first steel square tube ladder beam (21) and the second steel square tube ladder beam (22) are both provided with a plurality of upright posts (24), and the upright posts (24) are fixedly provided with handrails (25).
3. The portable safety ladder stand special for the foundation pit as claimed in claim 1, wherein a second U-shaped connecting piece (15) is arranged on the side surface of the ladder body structure (2), a column structure (4) is arranged on the second U-shaped connecting piece (15), and the bottom of the column structure (4) is arranged on the ladder stand base (3).
4. The portable safety ladder stand special for the foundation pit as claimed in claim 2, wherein through holes are formed in the first steel square pipe ladder beam (21) and the second steel square pipe ladder beam (22), and the patterned steel plate steps (23) are connected with the first steel square pipe ladder beam (21) and the second steel square pipe ladder beam (22) through second bolts (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121230032.2U CN215565642U (en) | 2021-06-03 | 2021-06-03 | Special portable safe cat ladder of foundation ditch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121230032.2U CN215565642U (en) | 2021-06-03 | 2021-06-03 | Special portable safe cat ladder of foundation ditch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215565642U true CN215565642U (en) | 2022-01-18 |
Family
ID=79865844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121230032.2U Active CN215565642U (en) | 2021-06-03 | 2021-06-03 | Special portable safe cat ladder of foundation ditch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215565642U (en) |
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2021
- 2021-06-03 CN CN202121230032.2U patent/CN215565642U/en active Active
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