CN105697488B - Positioning nail and insulating ladder connecting unit - Google Patents
Positioning nail and insulating ladder connecting unit Download PDFInfo
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- CN105697488B CN105697488B CN201610164456.0A CN201610164456A CN105697488B CN 105697488 B CN105697488 B CN 105697488B CN 201610164456 A CN201610164456 A CN 201610164456A CN 105697488 B CN105697488 B CN 105697488B
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- positioning nail
- positioning
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
- F16B7/18—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections using screw-thread elements
- F16B7/185—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections using screw-thread elements with a node element
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/08—Special construction of longitudinal members, or rungs or other treads
- E06C7/082—Connections between rungs or treads and longitudinal members
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/10—Reinforcements for ladders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
- F16B7/20—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections using bayonet connections
Abstract
The invention relates to the field of ladders, in particular to a positioning nail and a safety connecting accessory for enhancing the stability of a ladder, namely an insulating ladder connecting unit. An insulation ladder connection unit comprising: the ladder comprises rungs, a ladder frame, a connecting assembly for connecting the rungs and the ladder frame and a locking element; the coupling assembly comprises a lock nut and a screw in threaded connection with the lock nut; the locking element includes a first pin, a second pin, and a locating pin. The ladder frame further enhances the connection between the ladder frame and the rungs, enhances the connection stability, and simultaneously can ensure that the structure is self-locked and can not be disassembled, thereby preventing artificial damage.
Description
Technical Field
The invention relates to the field of ladders, in particular to a positioning nail and a safety connecting accessory for enhancing the stability of a ladder, namely an insulating ladder connecting unit.
Background
The insulating ladder is mainly used for special climbing tools in electric power engineering, telecommunication engineering, electrical engineering, hydroelectric engineering and the like, the insulating ladder has the characteristics of good light weight, high strength, insulation, corrosion resistance and aging resistance, the life safety of a user is guaranteed to the greatest extent, and the metal-free insulating ladder has the characteristics of no static electricity generation, no collision and no spark, and has irreplaceable absolute advantages in the chemical industry or the mining industry.
Whether the performance of the ladder is stable or not needs to be embodied through the ladder frame, the rungs and the connecting structures between the ladder frame and the rungs, the connecting structures between the ladder frame and the rungs of the existing ladder comprise various types, most of the connecting structures only have rung sheaths, and the ladder frame and the rungs are fixed only by adopting gluing and glue nail threading modes;
the prior art, such as the published chinese patent 200520027109.0, is a combined structure of ladder rungs and ladder frames, which comprises a rung body installed between two hollow ladder posts, wherein both ends of the rung body have assembling ends connected with the ladder posts; the joint of the ladder frame and the ladder rung is preset with a support sleeve which can transversely support the inner wall of the hollow ladder frame. However, the structure can not ensure the stability between the ladder frame and the rungs of the ladder, and the ladder frame and the rungs are still hidden in safety hazards, and are easily damaged after being damaged by human factors, or after long-time use, the rungs and the ladder frame are not connected tightly, so that safety problems are caused. This kind of phenomenon is urgently to be solved, and ladder frame between the step rod be connected insecure, very easily dismantle, lead to the safety problem.
Disclosure of Invention
The invention aims to provide a positioning nail and an insulating ladder connecting unit, which are used for solving the technical problems of potential safety hazards caused by unstable connection, easy falling and easy disassembly of rungs between ladder frames in the prior art, solving the problem that a nonmetal connecting device can reach or exceed the effect of a metal connecting structure of carbon steel and the like under the condition of high insulation, and avoiding adopting non-permanent modes of gluing and the like.
The positioning nail provided by the invention comprises a groove which is arranged at the tail end of the positioning nail and extends along the axial direction of the positioning nail, at least one first boss is arranged on the surface of the positioning nail, and the boss is positioned in the surface area of the positioning nail corresponding to the groove.
Furthermore, the positioning nail comprises a fixing part at the head end and a clamping part at the tail end, the groove penetrates through the clamping part, and the first boss is located on the outer surface of the clamping part;
the clamping part is a polygonal cylinder.
Further, the material of the positioning nails is reinforced nylon or POM.
The invention provides an insulating ladder connecting unit, which comprises a step rod, a ladder frame, a connecting assembly for connecting the step rod and the ladder frame and a locking element;
the coupling assembly comprises a lock nut and a screw in threaded connection with the lock nut; the locking element comprises a first pin, a second pin and a positioning pin;
the lock nut is positioned inside the foot stick; the rungs and the lock nuts are fixedly connected through the first pins, the screws are in threaded connection with the lock nuts, and the rungs, the lock nuts and the screws are fixedly connected with the ladder frame through the second pins;
the axial center of the screw is provided with a longitudinal through hole extending along the axial direction of the screw, and a transverse hole which is in cross communication with the longitudinal through hole; the longitudinal through hole is used for accommodating the positioning nail, and the transverse hole is used for being connected with the first boss in a clamped mode, so that the head end of the positioning nail is abutted to the second pin.
Furthermore, the lower part of the longitudinal through hole is a round hole, the upper part of the longitudinal through hole is a polygonal hole, the polygonal hole is matched with the clamping part of the positioning nail for use, and the round hole is matched with the fixing part of the positioning nail for use;
the fixing part is a cylindrical part, the polygonal hole is a hexagonal hole, and the clamping part is a hexagonal column part.
Further, the ladder frame with still be provided with the step rod sheath between the step rod, the step rod sheath includes the sheath body, be provided with the lip that prevents sheath body lateral shifting on the sheath body terminal surface, the relative both sides face of sheath body is provided with the second boss of taking the slope, the terminal surface of second boss with leave the clearance of placing the frame wall of ladder frame between the lip.
Furthermore, one side of the ladder frame, which is filled with the rungs, is provided with a big square hole, and one side opposite to the big square hole is provided with a small square hole which is coaxial with the big square hole.
Further, the first pin with the second pin sets up perpendicularly, the second pin with the location nail sets up perpendicularly, the location nail with first pin sets up perpendicularly.
Furthermore, two end surfaces of the first pin are flush with the outer contour surface of the foot stick respectively;
and two end surfaces of the second pin are flush with the outer contour surface of the ladder frame respectively.
Further, the transverse hole of the screw is a square hole, and the length of the square hole in the axial direction of the screw is greater than or equal to the length of the first boss in the axial direction of the positioning nail.
The invention has the beneficial effects that:
the positioning nail provided by the invention is a safety device added for ensuring that the second pin does not fall off automatically in long-term use, the hexagonal column part of the positioning nail is provided with two surfaces respectively provided with a first boss with a slope, and the hexagonal column is longitudinally provided with a groove with a height exceeding that of the first boss. When the positioning nail is installed in the hexagonal hole of the screw, the first boss is stressed in a slope mode, the hexagonal column part is elastically deformed to enable the longitudinal grooves of the hexagonal column part to be combined, and the fixing part of the positioning nail is pinned into the corresponding hole of the second pin; the positioning nail is assembled in place, meanwhile, the first bosses on the two sides are embedded into square holes in the hexagonal hole wall of the screw, and the shape of the longitudinal groove of the positioning nail is restored; because the first boss of the hexagonal column part of the positioning nail is embedded into the square hole of the hexagonal hole wall of the screw, the positioning nail cannot fall off automatically.
The insulating ladder connecting unit, the second pin and the positioning nail are the most main safety and protection components. Because general non-metallic material exists cold and hot deformation big, ageing defect such as the performance decay is obvious that causes, so for avoiding causing the connection to become flexible because of the material defect when design ladder frame is connected with the step, guarantee ladder utensil bulk strength performance, the second pin has been increased, for guaranteeing that the second pin can not drop by oneself has increased the location nail part that has anti-drop design again, just so can guarantee that the ladder utensil can not cause the step and be connected not hard up or drop with the ladder frame because of the material performance problem in long-term the use, thereby guarantee ladder frame and step joint strength, the security performance of insulating elevator has been improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural view of a positioning nail of an insulation ladder connection unit provided by the invention;
FIG. 2 is an assembled view of an insulated ladder attachment unit without a rung shroud according to the present invention;
FIG. 3 is a schematic view of the structure of a rung of the connection unit of the insulating ladder according to the present invention;
fig. 4 is a schematic structural view of a locking nut of the insulating ladder connecting unit provided by the invention;
fig. 5 is a schematic structural view of a second pin of the insulation ladder connection unit provided by the present invention;
fig. 6 is a schematic structural view of a screw of the insulation ladder connection unit provided by the present invention;
fig. 7 is a schematic structural view of a ladder frame of an insulation ladder connection unit provided by the present invention;
FIG. 8 is a schematic view of the structure of the rung shroud of the ladder connecting unit according to the present invention;
FIG. 9 is an assembled view of an insulated ladder attachment unit with a rung shroud in accordance with the present invention;
FIG. 10 is a schematic view of the construction of the rung assembly provided in example 3;
fig. 11 is a schematic view of the structure of the ladder frame assembly provided in embodiment 3;
FIG. 12 is a schematic view of the assembled rung assembly and ladder frame assembly provided in example 3;
FIG. 13 is the schematic view of the screw-in structure of FIG. 12 provided in example 3;
FIG. 14 is the schematic view of FIG. 13 provided in example 3 after the second pin is installed;
fig. 15 is a schematic structural view of fig. 14 after the positioning pin is installed, provided in embodiment 3.
Reference numerals:
1-step on the rod; 2-locking the nut;
3-step on the rod sheath; 4-ladder frame;
5-a second pin; 6-a screw;
7-positioning nails; 8-a first pin;
11-a second aperture; 12-a third aperture;
21-fourth orifice; 22-fifth orifice;
31-a raised lip; 32-a second boss;
51-sixth orifice; 61-a first orifice;
62-square hole; 71-a stationary part;
72-hexagonal pillar portion; 721-a first boss;
722-groove.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
As shown in fig. 1, in the positioning nail provided by this embodiment, a groove extending along the axial direction of the positioning nail is disposed at the tail end of the positioning nail, at least one first boss is disposed on the surface of the positioning nail, and the boss is located in a surface region of the positioning nail corresponding to the groove.
In an alternative of this embodiment, the positioning pin 7 includes a fixing portion at the head end and a fastening portion at the tail end, the groove 722 penetrates the fastening portion, the first boss 721 is located on the outer surface of the fastening portion, the fixing portion is a cylindrical portion 71, and the fastening portion is a hexagonal cylindrical portion 72.
In the alternative of this embodiment, the positioning pin 7 is made of reinforced nylon or POM, and POM is polyoxymethylene;
or the material of the positioning nail 7 is selected from one of reinforced plastics.
The positioning pin 7 provided by this embodiment is used in cooperation with the screw 6, when the positioning pin 7 is installed in the hexagonal hole of the screw 6, the slope of the first boss 721 is stressed, the hexagonal cylindrical portion 72 generates elastic deformation, the grooves 722 of the hexagonal cylindrical portion 72 are merged, and the fixing portion 71 of the positioning pin 7 is pinned in the corresponding hole of the second pin 5; the positioning nail 7 is assembled in place, meanwhile, the first bosses 721 on the two sides are inlaid in the square hole 62 of the screw 6, and the shape of the groove 722 of the positioning nail 7 is restored; since the first boss 721 of the hexagonal cylindrical portion 72 of the positioning pin 7 is fitted into the square hole 62 of the screw 6, the positioning pin 7 does not fall off by itself.
Example 2
As shown in fig. 1 and fig. 2-7, the insulating ladder connecting unit provided in this embodiment includes the technical features of embodiment 1, and further includes a rung 1, a ladder frame 4, a connecting assembly connecting the rung 1 and the ladder frame 4, and a locking element;
the coupling assembly comprises a lock nut 2 and a screw 6 in threaded connection with the lock nut 2; the locking element comprises a first pin 8, a second pin 5 and a positioning pin 7;
the lock nut 2 is positioned inside the foot stick 1; the foot stick 1 is fixedly connected with the lock nut 2 through a first pin 8, the screw 6 is in threaded connection with the lock nut 2, and the foot stick 1, the lock nut 2 and the screw 6 are fixedly connected with the ladder frame 4 through a second pin 5;
the axis of the screw 6 is provided with a longitudinal through hole extending along the axial direction of the screw 6 and a transverse hole communicated with the longitudinal through hole in a crossing way; the longitudinal through hole is used for accommodating the positioning nail 7, and the transverse hole is used for being clamped with the first boss 721, so that the head end of the positioning nail 7 is abutted to the second pin 5.
In an alternative of this embodiment, the lower portion of the longitudinal through hole is a circular hole, the upper portion is a hexagonal hole, the hexagonal hole is used in cooperation with the hexagonal column portion 72 of the positioning nail 7, and the circular hole is used in cooperation with the fixing portion 71 of the positioning nail 7.
In the alternative of the embodiment, one side of the ladder frame 4, which is arranged in the foot stick 1, is provided with a large square hole, and the side opposite to the large square hole is provided with a small square hole which is coaxial with the large square hole;
the big square hole can limit the rotation of the foot stick; the small square hole can further limit the rotation of the foot stick.
In the alternative of this embodiment, the first pin 8 is disposed perpendicular to the second pin 5, the second pin 5 is disposed perpendicular to the positioning pin 7, and the positioning pin 7 is disposed perpendicular to the first pin 8.
In an alternative of this embodiment, the two end faces of the first pin 8 are respectively flush with the outer contour face of the rung 1;
the two end faces of the second pin 5 are flush with the outer contour faces of the stiles 4, respectively.
In an alternative of this embodiment, the transverse hole of the screw 6 is a square hole 62, and the length of the square hole 62 in the axial direction of the screw 6 is greater than or equal to the axial length of the first boss 721 in the positioning pin 7.
Furthermore, a table top is arranged inside the screw 6, a round hole is formed in the direction of the table top extending to the exposed end of the threaded column along the axis, a hexagonal hole is formed in the direction of the table top extending to the end face of the screw along the axis, and the round hole is connected with the hexagonal hole through the table top;
the screw 6 is provided with a square hole 62 and a first small hole 61 for the second pin 5 to pass through on the threaded column along the radial direction of the threaded column.
Furthermore, a second small hole 11 for the first pin 8 to pass through is arranged on one surface of the foot stick 1 for stepping, and a third small hole 12 matched with the first small hole 61 is also arranged on the foot stick 1;
the lock nut 2 is provided with a fourth small hole 21 matched with the second small hole 11 and a fifth small hole 22 matched with the third small hole 12;
a sixth aperture 51 in the second pin 5 is machined into a hole in the screw 6 at the rear edge of the second pin 5 for the passage of the locating pin 7.
Example 3
As shown in fig. 1 and 3 to 9, the insulation ladder connection unit of the present embodiment includes not only all the technical features of the above embodiment 2, but also the following features:
in the alternative of this embodiment, still be provided with step rod sheath 3 between ladder frame 4 and step rod 1, step rod sheath 3 includes the sheath body, is provided with the lip 31 that prevents sheath body lateral shifting on the sheath body terminal surface, and the relative both sides face of sheath body is provided with the second boss 32 of taking the slope, leaves the clearance of placing the frame wall of ladder frame 4 between the terminal surface of second boss 32 and lip 31.
The installation process is as follows:
under the action of external force, the first pin 8 passes through the fourth small hole 21 of the locking nut 2 and the second small hole 11 of the foot stick 1, so as to ensure that the foot stick 1 and the locking nut 2 are fixed to form a foot stick assembly, as shown in figure 10;
the rung assemblies are arranged in the square holes at the side, provided with the convex lips 31, of the rung sheaths 3 of the ladder frame assemblies to form the rung ladder frame assemblies, as shown in fig. 12;
screwing a screw 6 into a locking nut 2 of a rung ladder frame combination for screwing, transmitting screwing force to a rung 1 through a first pin 8, pressing a rung sheath 3 and a ladder frame 4 by the rung 1 so as not to generate axial movement, controlling axial rotation by matching a ladder frame 4 special-shaped hole with the rung sheath 3 and the rung 1, and screwing the screw 6 by utilizing a hexagonal hole in the screw 6 or a twelve square shape outside the screw 6, as shown in fig. 13;
the second pin 5 is arranged in a corresponding hole of the combination of the rung 1 and the ladder frame 4, and has the function of tightly locking the screw 6, the lock nut 2 and the rung 1 to avoid the phenomenon of loosening, falling off and the like of the screw 6 due to long-term use, as shown in fig. 14;
the positioning nail 7 is arranged in the combination of the rung 1 and the ladder frame 4 along the inner hexagonal hole of the screw 6, the upper part of the positioning nail 7 is hexagonal and is the same as the inner hexagonal hole of the screw 6, the first bosses 721 at the two sides are saw-toothed, the middle of the upper part of the positioning nail 7 is provided with a groove 722, when the first bosses 721 are arranged in the arranging process, the middle groove 722 is extruded by the inner wall of the hole of the screw 6 to be combined, when the positioning nail 7 is assembled in place, the first bosses 721 enter the square hole at the side surface of the screw 6, and the groove is recovered, so that the positioning nail 7 can be self-locked in the screw 6 and cannot be separated; the lower part of the positioning nail 7 is cylindrical, and the cylindrical shape is inserted into a middle round hole of the second pin 5 to ensure that the second pin does not fall off, as shown in fig. 15.
The structure is characterized in that the tenon-and-mortise structural design ensures that the whole connecting structure cannot fail under the condition of unintentional damage by external force, and the connecting structure cannot be disassembled under the condition of not damaging parts after assembly, so that the life safety accidents of a user are prevented from being damaged due to loosening, falling and the like of the parts, which are generated by aging of non-metal parts, of the connecting part of the ladder frame and the step stick in the use process due to artificial misoperation and long-term use as far as possible.
With the insulating ladder connection structure of the present embodiment, the second pin 5 and the positioning pin 7 are the most important safety and protection components. Because general non-metallic material exists cold and hot deformation big relatively general metallic material, it is ageing to cause the performance decay defect such as obvious, the event is when design ladder frame 4 is connected with step 1 for avoiding causing because of the material defect to be connected not hard up, guarantee ladder utensil bulk strength performance, second pin 5 has been increased, for guaranteeing that second pin 5 can not drop by oneself and increased the location nail 7 parts that have the anti-drop design again, just so can guarantee that ladder utensil can not cause step 1 and ladder frame 4 to be connected not hard up or drop because of the material performance problem in long-term use, thereby guarantee ladder frame 4 and step 1's joint strength, the security performance of insulating ladder has been improved.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. An insulating ladder linkage unit which characterized in that: comprises a rung, a ladder frame, a connecting component for connecting the rung and the ladder frame and a locking element;
the coupling assembly comprises a lock nut and a screw in threaded connection with the lock nut; the locking element comprises a first pin, a second pin and a positioning pin;
the lock nut is positioned inside the foot stick; the rungs and the lock nuts are fixedly connected through the first pins, the screws are in threaded connection with the lock nuts, and the rungs, the lock nuts and the screws are fixedly connected with the ladder frame through the second pins;
the tail end of the positioning nail is provided with a groove extending along the axial direction of the positioning nail, the surface of the positioning nail is provided with at least one first boss, and the first boss is positioned in the surface area of the positioning nail corresponding to the groove;
the axis of the screw is provided with a longitudinal through hole extending along the axial direction of the screw, and a transverse hole communicated with the longitudinal through hole in a cross way; the longitudinal through hole is used for accommodating the positioning nail, and the transverse hole is used for being clamped with the first boss, so that the fixing part of the positioning nail is pinned into a corresponding hole of the second pin;
the positioning nail comprises a fixing part at the head end and a clamping part at the tail end, the groove penetrates through the clamping part, and the first boss is positioned on the outer surface of the clamping part;
the clamping part is a polygonal cylinder;
the positioning nails are made of reinforced nylon or POM.
2. The insulation ladder connection unit as claimed in claim 1, wherein: the lower part of the longitudinal through hole is a round hole, the upper part of the longitudinal through hole is a polygonal hole, the polygonal hole is matched with the clamping part of the positioning nail for use, and the round hole is matched with the fixing part of the positioning nail for use.
3. The insulation ladder connection unit of claim 2, wherein: ladder frame with still be provided with the step rod sheath between the step rod, the step rod sheath includes the sheath body, be provided with the lip that prevents sheath body lateral shifting on the sheath body terminal surface, the relative both sides face of sheath body is provided with the second boss of taking the slope, the terminal surface of second boss with leave between the lip and place the clearance of the frame wall of ladder frame.
4. The insulation ladder connection unit as claimed in claim 3, wherein: one side of the ladder frame, which is filled into the rungs, is provided with a large square hole, and the side opposite to the large square hole is provided with a small square hole which is coaxial with the large square hole.
5. The insulation ladder connection unit as claimed in claim 1, wherein: the first pin and the second pin are arranged vertically, the second pin and the positioning pin are arranged vertically, and the positioning pin and the first pin fixing part pin are arranged vertically.
6. The insulation ladder connection unit as claimed in claim 1, wherein: two end surfaces of the first pin are flush with the outer contour surface of the step bar respectively;
and two end surfaces of the second pin are flush with the outer contour surface of the ladder frame respectively.
7. The insulation ladder connection unit as claimed in claim 1, wherein: the transverse hole of the screw is a square hole, and the length of the square hole in the axial direction of the screw is greater than or equal to the length of the first boss in the axial direction of the positioning nail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610164456.0A CN105697488B (en) | 2016-03-22 | 2016-03-22 | Positioning nail and insulating ladder connecting unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610164456.0A CN105697488B (en) | 2016-03-22 | 2016-03-22 | Positioning nail and insulating ladder connecting unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105697488A CN105697488A (en) | 2016-06-22 |
| CN105697488B true CN105697488B (en) | 2023-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610164456.0A Active CN105697488B (en) | 2016-03-22 | 2016-03-22 | Positioning nail and insulating ladder connecting unit |
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| Country | Link |
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| CN (1) | CN105697488B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112664128A (en) * | 2020-12-24 | 2021-04-16 | 淄博职业学院 | Crawling device for electromechanical equipment installation |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1429641A1 (en) * | 1963-07-25 | 1969-03-20 | Leopold Osthoff | Storage rack |
| AU7326974A (en) * | 1973-09-12 | 1976-03-18 | Fibre Glass Australia Pty Ltd | Fibre glass ladder |
| CN2823524Y (en) * | 2005-09-30 | 2006-10-04 | 天津市金锚集团有限责任公司 | Ladder jointing structure |
| CN201155298Y (en) * | 2007-12-27 | 2008-11-26 | 天津市金锚集团有限责任公司 | Fixing and mounting structure of rungs and frame |
| CN201288493Y (en) * | 2007-12-29 | 2009-08-12 | 冷鹭浩 | Ladder |
| CN201982425U (en) * | 2011-01-06 | 2011-09-21 | 荆州奥克兰塑业有限公司 | Plastic fastener for auto body outer panel |
| CN102678697B (en) * | 2012-06-05 | 2016-03-30 | 湖南省金为型材有限公司 | A kind of pipe connection fitting |
| CN205423432U (en) * | 2016-03-22 | 2016-08-03 | 天津市金锚家居用品有限公司 | Location nail and insulating terraced linkage unit |
-
2016
- 2016-03-22 CN CN201610164456.0A patent/CN105697488B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105697488A (en) | 2016-06-22 |
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