CN108675101B - Step fixing buckle - Google Patents
Step fixing buckle Download PDFInfo
- Publication number
- CN108675101B CN108675101B CN201810815548.XA CN201810815548A CN108675101B CN 108675101 B CN108675101 B CN 108675101B CN 201810815548 A CN201810815548 A CN 201810815548A CN 108675101 B CN108675101 B CN 108675101B
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- Prior art keywords
- positioning protrusion
- nut
- bolt
- clasp
- support plane
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- 238000005452 bending Methods 0.000 claims description 18
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B23/00—Component parts of escalators or moving walkways
- B66B23/08—Carrying surfaces
- B66B23/12—Steps
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- Connection Of Plates (AREA)
Abstract
The invention discloses a step fixing buckle, which comprises: a buckle part, a bolt and a nut. The head of the bolt is adapted to be supported on a first support plane of the snap-in part and the nut is adapted to be supported on a second support plane of the snap-in part. A first positioning protrusion is formed on the outer side of the first support plane of the buckle component, and is suitable for being abutted on a screw head of the bolt for preventing the bolt from moving radially outwards. A second positioning protrusion is formed on the outer side of the second supporting plane of the buckle component, and the second positioning protrusion is suitable for abutting against the nut and is used for preventing the nut from rotating. Therefore, the invention can effectively improve the clasping force of the buckle component, thereby ensuring that the steps are reliably fixed on the step shaft, reducing the risk of collision accidents caused by movement of the steps and protecting the personal safety of passengers.
Description
Technical Field
The present invention relates to a step fixing buckle, and more particularly, to a step fixing buckle suitable for fixing an escalator step on a step shaft.
Background
In the prior art, a through hole is formed on the end of the step of the escalator, a step shaft passes through the through hole on the end of the step, and a step fixing buckle is respectively arranged on two sides of the step. The step fixing buckle is sleeved on the step shaft, and the bolt and the nut on the step fixing buckle can be screwed down to enable the step fixing buckle to be tightly held on the step shaft, so that the step is fixed on the step shaft, and the step cannot move left and right along the axial direction of the step shaft.
However, in the prior art, when the bolts and nuts on the step fixing clasp are tightened, the bolts move in the radial direction of the step shaft and contact and interfere with the inner wall of the step fixing clasp, which consumes a certain torque, resulting in insufficient locking torque of the bolts and nuts and easy loosening of the step fixing clasp. In addition, in the prior art, when the bolt and the nut are screwed down, the nut cannot be well fixed, the nut is easy to rotate, the locking moment of the bolt and the nut can be reduced, and the step fixing buckle is easy to loosen.
Disclosure of Invention
The present invention is directed to solving at least one of the above-mentioned problems and disadvantages of the prior art.
A step fixing buckle is suitable for fixing steps of an escalator on a step shaft. This step fixed buckle includes: a catching member having a through hole allowing the step shaft to pass therethrough and first and second coupling ends facing and spaced apart from each other, an opening communicating with the through hole being defined between the first and second coupling ends; a bolt adapted to pass through the first connection end portion and the second connection end portion in a first direction perpendicular to an axial direction and a radial direction of the through hole; and a nut adapted to be screwed onto the bolt. A first support plane perpendicular to the first direction is formed on a side of the first connection end facing away from the opening, a screw head of the bolt is adapted to be supported on the first support plane, a second support plane perpendicular to the first direction is formed on a side of the second connection end facing away from the opening, and the nut is adapted to be supported on the second support plane. A first positioning protrusion protruding along the first direction is formed on the outer side of the first supporting plane, and is suitable for being abutted on a screw head of the bolt so as to prevent the bolt from moving outwards along the radial direction of the through hole; a second positioning protrusion protruding in the first direction is formed on the outer side of the second support plane, and is adapted to abut against the nut for preventing the nut from rotating.
According to an exemplary embodiment of the present invention, through grooves allowing the bolts to pass are formed on the first and second connection ends; when the step fixing clasp is fastened to the step shaft by the bolt and the nut, the first positioning protrusion and the second positioning protrusion position the bolt at a position not in contact with the inner wall of the through groove.
According to another exemplary embodiment of the present invention, the nut is a polygonal nut having at least four corners, a positioning wall surface perpendicular to the second supporting plane is formed at an inner side of the second supporting plane, and the nut is adapted to be clamped between the positioning wall surface and the second positioning protrusion to prevent the nut from rotating.
According to another exemplary embodiment of the present invention, the opening extends in a radial direction of the through hole.
According to another exemplary embodiment of the present invention, the snap member comprises: a pair of plate-like body portions parallel to and spaced apart from each other, the through-holes being formed on the pair of plate-like body portions; a first connecting portion connecting first end portions of the pair of plate-like body portions; and a second connecting portion connecting second end portions of the pair of plate-like body portions, the first connecting portion and the first end portion constituting a first connecting end portion of the buckle member, the second connecting portion and the second end portion constituting a second connecting end portion of the buckle member.
According to another exemplary embodiment of the present invention, the first positioning protrusion is formed on the first connection portion, and the second positioning protrusion is formed on the second connection portion.
According to another exemplary embodiment of the invention, the plate-like body part is C-shaped as a whole.
According to another exemplary embodiment of the present invention, the snap member is a single unitary member made by bending the sheet Zhang Liaoban.
According to another exemplary embodiment of the present invention, when the snap member is deployed as a single Zhang Liaoban, the Shan Zhangliao plate has a transverse axis of symmetry and a longitudinal axis of symmetry perpendicular to the transverse axis of symmetry; the transverse symmetry axis is the symmetry center line of the first connecting part, the first positioning bulge, the second connecting part and the second positioning bulge.
According to another exemplary embodiment of the present invention, when the fastening member is unfolded as the single Zhang Liaoban, first concave portions are formed at both sides of the first positioning protrusion, respectively, and second concave portions are formed at both sides of the second positioning protrusion, respectively, the first supporting plane is a bottom surface of the first concave portion, and the second supporting plane is a bottom surface of the second concave portion.
According to another exemplary embodiment of the present invention, the snap feature is formed after the Shan Zhangliao panel is bent 90 degrees along a first and a second bend line, which are parallel to the lateral symmetry axis.
According to another exemplary embodiment of the present invention, the first and second connection portions are located between the first and second bend lines when the snap member is deployed as a single Zhang Liaoban.
According to another exemplary embodiment of the present invention, the first positioning protrusion and the second positioning protrusion are located at an intermediate position between the first bending line and the second bending line when the catching member is unfolded as a single Zhang Liaoban.
In the foregoing respective exemplary embodiments according to the present invention, the first positioning protrusion for preventing the radial movement of the bolt and the second positioning protrusion for preventing the rotation of the nut are formed on the catching member, so that the holding force of the catching member can be effectively improved. Therefore, the invention can effectively prevent the fastener from loosening, ensure that the steps are reliably fixed on the step shaft, reduce the risk of collision accidents caused by movement of the steps and protect the personal safety of passengers.
Other objects and advantages of the present invention will become apparent from the following description of the invention with reference to the accompanying drawings, which provide a thorough understanding of the present invention.
Drawings
Fig. 1 shows a schematic view of steps of an escalator being fixed on a step shaft by step fixing buckles according to an example embodiment of the invention;
FIG. 2 is a perspective view of the step attachment clasp of FIG. 1;
fig. 3 shows a schematic view of the clasp part of the step ladder clasp of fig. 2 when unfolded as a single Zhang Liaoban.
Detailed Description
The technical scheme of the invention is further specifically described below through examples and with reference to the accompanying drawings. In the specification, the same or similar reference numerals denote the same or similar components. The following description of embodiments of the present invention with reference to the accompanying drawings is intended to illustrate the general inventive concept and should not be taken as limiting the invention.
Furthermore, in the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the present disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in the drawings in order to simplify the drawings.
According to one general technical concept of the present invention, there is provided a step fixing buckle adapted to fix steps of an escalator to a step shaft. This step fixed buckle includes: a catching member having a through hole allowing the step shaft to pass therethrough and first and second coupling ends facing and spaced apart from each other, an opening communicating with the through hole being defined between the first and second coupling ends; a bolt adapted to pass through the first connection end portion and the second connection end portion in a first direction perpendicular to an axial direction and a radial direction of the through hole; and a nut adapted to be screwed onto the bolt. A first support plane perpendicular to the first direction is formed on a side of the first connection end facing away from the opening, a screw head of the bolt is adapted to be supported on the first support plane, a second support plane perpendicular to the first direction is formed on a side of the second connection end facing away from the opening, and the nut is adapted to be supported on the second support plane. A first positioning protrusion protruding along the first direction is formed on the outer side of the first supporting plane, and is suitable for being abutted on a screw head of the bolt so as to prevent the bolt from moving outwards along the radial direction of the through hole; a second positioning protrusion protruding in the first direction is formed on the outer side of the second support plane, and is adapted to abut against the nut for preventing the nut from rotating.
Fig. 1 shows a schematic view of the steps 20 of an escalator being secured to a step shaft 30 by step securing catches 10 according to an example embodiment of the invention; fig. 2 is a perspective view of the step fixing clasp 10 shown in fig. 1.
As shown in fig. 1 and 2, in the illustrated embodiment, a through hole is formed at an end of the steps 20 of the escalator, a step shaft 30 passes through the through hole at the end of the steps 20, and one step fixing buckle 10 is provided at each side of the steps 20. The step fixing buckle 10 is sleeved on the step shaft 30, and the step fixing buckle 10 can be tightly held on the step shaft 30 by tightening the bolt 11 and the nut 12 on the step fixing buckle 10, so that the step 20 is fixed on the step shaft 30, and the step 20 cannot move along the axial direction of the step shaft 30.
As shown in fig. 1 and 2, in the illustrated embodiment, the step fixing clasp 10 mainly includes: a snap-in part 100, a bolt 11 and a nut 12.
As shown in fig. 1 and 2, in the illustrated embodiment, the snap member 100 has a through hole 140 allowing the step shaft 30 to pass therethrough and first and second coupling ends 100a and 100b facing and spaced apart from each other. An opening 130 communicating with the through-hole 140 is defined between the first connection end portion 100a and the second connection end portion 100b.
As shown in fig. 1 and 2, in the illustrated embodiment, the bolt 11 is adapted to pass through the first and second connection ends 100a and 100b in a first direction Z perpendicular to the axial and radial directions of the through hole 140. The nut 12 is adapted to be screwed onto the bolt 11.
As shown in fig. 1 and 2, in the illustrated embodiment, a first support plane 111a perpendicular to the first direction Z is formed on a side of the first connection end 100a facing away from the opening 130, and the head of the bolt 11 is adapted to be supported on the first support plane 111 a.
As shown in fig. 1 and 2, in the illustrated embodiment, a second support plane 112a perpendicular to the first direction Z is formed on a side of the second connection end 100b facing away from the opening 130, and the nut 12 is adapted to be supported on the second support plane 112 a.
As shown in fig. 1 and 2, in the illustrated embodiment, a first positioning protrusion 101 protruding in the first direction Z is formed outside the first support plane 111a, the first positioning protrusion 101 being adapted to abut on a screw head of the bolt 11 for preventing the bolt 11 from moving outward in a radial direction of the through hole 140.
As shown in fig. 1 and 2, in the illustrated embodiment, a second positioning protrusion 102 protruding in the first direction Z is formed on the outer side of the second support plane 112a, the second positioning protrusion 102 being adapted to abut against the nut 12 for preventing the nut 12 from rotating.
As shown in fig. 1 and 2, in the illustrated embodiment, through grooves 150 allowing the bolts 11 to pass therethrough are formed on the first and second connection ends 100a and 100b. When the step fixing clasp 10 is fastened to the step shaft 30 by the bolts 11 and nuts 12, the first positioning protrusion 101 and the second positioning protrusion 102 position the bolts 11 at positions not in contact with the inner wall of the through groove 150. In this way, the bolt 11 can be prevented from contacting and interfering with the inner wall of the snap-in member 100, so that the locking moment of the bolt 11 and the nut 12 is not reduced.
As shown in fig. 1 and 2, in the illustrated embodiment, the nut 12 is a multi-angle nut having at least four corners. A positioning wall surface 103 perpendicular to the second support plane 112a is formed inside the second support plane 112 a. The nut 12 is adapted to be clamped between the positioning wall 103 and the second positioning boss 102 to prevent the nut 12 from rotating. In this way, the nut 12 does not rotate, so that the nut 12 is prevented from loosening, and the locking moment of the bolt 11 and the nut 12 is ensured.
As shown in fig. 1 and 2, in the illustrated embodiment, the opening 130 extends in a radial direction of the through-hole 140.
As shown in fig. 1 and 2, in the illustrated embodiment, the snap member 100 mainly includes: a pair of plate-like body portions 110, a first connecting portion 121, and a second connecting portion 122. The pair of plate-like body portions 110 are parallel to and spaced apart from each other. The through-hole 140 is formed on the pair of plate-like body portions 110. The first connection portion 121 connects the first end portions 111 of the pair of plate-like body portions 110. The second connection portion 122 connects the second end portions 112 of the pair of plate-like body portions 110.
As shown in fig. 1 and 2, in the illustrated embodiment, the first connection portion 121 and the first end portion 111 constitute a first connection end portion 100a of the buckle component 100. The second connecting portion 122 and the second end portion 112 constitute a second connecting end portion 100b of the buckle element 100.
As shown in fig. 1 and 2, in the illustrated embodiment, the first positioning protrusion 101 is formed on the first connection part 121, and the second positioning protrusion 102 is formed on the second connection part 122.
As shown in fig. 1 and 2, in the illustrated embodiment, the plate-like body portion 110 is generally C-shaped.
Fig. 3 shows a schematic view of the clasp part 100 of the step ladder securement clasp 10 shown in fig. 2 when extended to form a single Zhang Liaoban.
As shown in fig. 1-3, in the illustrated embodiment, the snap feature 100 may be a single, unitary piece made by bending the sheet Zhang Liaoban.
As shown in fig. 1-3, in the illustrated embodiment, when the snap member 100 is deployed as a single Zhang Liaoban, the single Zhang Liaoban has a transverse axis of symmetry X and a longitudinal axis of symmetry Y perpendicular to the transverse axis of symmetry X. The lateral symmetry axis X is the symmetry center line of the first connecting portion 121, the first positioning boss 101, the second connecting portion 122, and the second positioning boss 102.
As shown in fig. 1 to 3, in the illustrated embodiment, when the clip member 100 is deployed as a single Zhang Liaoban, the first recess 161 is formed on both sides of the first positioning protrusion 101, the second recess 162 is formed on both sides of the second positioning protrusion 102, the first support plane 111a is a bottom surface of the first recess 161, and the second support plane 112a is a bottom surface of the second recess 162.
As shown in fig. 1 to 3, in the illustrated embodiment, the snap member 100 shown in fig. 2 may be formed after the single Zhang Liao panel shown in fig. 3 is bent 90 degrees along the first and second bending lines L1 and L1. As shown in fig. 3, the first and second bending lines L1 and L1 are parallel to the transverse symmetry axis X.
As shown in fig. 1 to 3, in the illustrated embodiment, when the buckle component 100 is deployed as a single Zhang Liaoban, the first and second connection parts 121 and 122 are located between the first and second bending lines L1 and L1.
As shown in fig. 1 to 3, in the illustrated embodiment, when the catching member 100 is spread out as a single Zhang Liaoban, the first and second positioning protrusions 101 and 102 are located at an intermediate position between the first and second bending lines L1 and L1.
In the foregoing embodiment of the present invention, as shown in fig. 1 to 3, the first positioning protrusion 101 and the second positioning protrusion 102 are located at a material-removing section on the unfolding structure of the buckle part 100, and thus the material utilization rate is improved, so that the cost is not increased. Meanwhile, the first positioning protrusion 101 and the second positioning protrusion 102 are located at the middle part between the two bending lines L1 and L2 on the unfolding structure of the buckle component 100, and have certain guiding and helping effects on the bending forming process of the buckle component 100.
Those skilled in the art will appreciate that the embodiments described above are exemplary and that modifications may be made by those skilled in the art, and that the structures described in the various embodiments may be freely combined without conflict in terms of structure or principle.
Although the present invention has been described with reference to the accompanying drawings, the examples disclosed in the drawings are intended to illustrate preferred embodiments of the invention and are not to be construed as limiting the invention.
Although a few embodiments of the present general inventive concept have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the general inventive concept, the scope of which is defined in the claims and their equivalents.
It should be noted that the word "comprising" does not exclude other elements or steps, and that the word "a" or "an" does not exclude a plurality. In addition, any element numbers of the claims should not be construed as limiting the scope of the invention.
Claims (13)
1. A step fixing clasp adapted to fix a step (20) of an escalator on a step shaft (30), the step fixing clasp (10) comprising:
a snap member (100) having a through hole (140) allowing the step shaft (30) to pass therethrough and first and second coupling end portions (100 a, 100 b) facing and spaced apart from each other, an opening (130) communicating with the through hole (140) being defined between the first and second coupling end portions (100 a, 100 b);
a bolt (11) adapted to pass through the first connection end portion (100 a) and the second connection end portion (100 b) in a first direction perpendicular to the axial direction and the radial direction of the through hole (140); and
a nut (12) adapted to be screwed onto said bolt (11),
a first support plane (111 a) perpendicular to the first direction (Z) is formed on a side of the first connection end (100 a) facing away from the opening (130), the head of the bolt (11) being adapted to be supported on the first support plane (111 a),
a second support plane (112 a) perpendicular to the first direction (Z) is formed on a side of the second connecting end (100 b) facing away from the opening (130), the nut (12) being adapted to be supported on the second support plane (112 a),
the method is characterized in that:
a first positioning protrusion (101) protruding along the first direction (Z) is formed on the outer side of the first supporting plane (111 a), and the first positioning protrusion (101) is suitable for abutting against a screw head of the bolt (11) so as to prevent the bolt (11) from moving outwards along the radial direction of the through hole (140);
a second positioning protrusion (102) protruding in the first direction (Z) is formed on the outer side of the second support plane (112 a), and the second positioning protrusion (102) is suitable for abutting against the nut (12) for preventing the nut (12) from rotating.
2. The step fixing clasp of claim 1, wherein:
a through groove (150) allowing the bolt (11) to pass therethrough is formed in the first connection end portion (100 a) and the second connection end portion (100 b);
when the step fixing clasp (10) is fastened on the step shaft (30) by the bolt (11) and the nut (12), the first positioning protrusion (101) and the second positioning protrusion (102) position the bolt (11) at a position not in contact with the inner wall of the through groove (150).
3. The step fixing clasp of claim 1, wherein:
the nut (12) is a polygonal nut having at least four corners, a positioning wall surface (103) perpendicular to the second supporting plane (112 a) is formed on the inner side of the second supporting plane (112 a), and the nut (12) is adapted to be clamped between the positioning wall surface (103) and the second positioning protrusion (102) to prevent the nut (12) from rotating.
4. The step fixing clasp of claim 1, wherein: the opening (130) extends in a radial direction of the through hole (140).
5. The step fixing clasp of claim 1, wherein:
the clasp part (100) comprises:
a pair of plate-shaped body parts (110) parallel to each other and spaced apart from each other, the through holes (140) being formed on the pair of plate-shaped body parts (110);
a first connection part (121) for connecting first end parts (111) of the pair of plate-shaped main body parts (110); and
a second connection portion (122) for connecting the second end portions (112) of the pair of plate-shaped body portions (110),
the first connecting portion (121) and the first end portion (111) constitute a first connecting end portion (100 a) of the buckle member (100),
the second connection portion (122) and the second end portion (112) constitute a second connection end portion (100 b) of the snap member (100).
6. The step fixing clasp of claim 5, wherein:
the first positioning protrusion (101) is formed on the first connection portion (121), and the second positioning protrusion (102) is formed on the second connection portion (122).
7. The step fixing clasp of claim 5, wherein: the plate-like body portion (110) is C-shaped as a whole.
8. The step fixing clasp of claim 5, wherein:
the snap-in component (100) is a single unitary component made by bending a single Zhang Liaoban.
9. The step fixing clasp of claim 8, wherein:
when the clasp part (100) is unfolded as a single Zhang Liaoban, the Shan Zhangliao plate has a transverse symmetry axis (X) and a longitudinal symmetry axis (Y) perpendicular to the transverse symmetry axis (X);
the transverse symmetry axis (X) is a symmetry center line of the first connecting portion (121), the first positioning protrusion (101), the second connecting portion (122) and the second positioning protrusion (102).
10. The step fixing clasp of claim 8, wherein:
when the fastening member (100) is unfolded into a single piece Zhang Liaoban, first concave portions (161) are formed on two sides of the first positioning protrusion (101), second concave portions (162) are formed on two sides of the second positioning protrusion (102), the first support plane (111 a) is a bottom surface of the first concave portions (161), and the second support plane (112 a) is a bottom surface of the second concave portions (162).
11. The step-securing clasp of claim 9, wherein:
the snap member (100) is formed after the Shan Zhangliao panel is bent 90 degrees along a first bending line (L1) and a second bending line (L1), the first bending line (L1) and the second bending line (L1) being parallel to the transverse symmetry axis (X).
12. The step-securing clasp of claim 11, wherein:
when the snap member (100) is unfolded as a sheet Zhang Liaoban, the first and second connection portions (121, 122) are located between the first and second bending lines (L1, L1).
13. The step-securing clasp of claim 11, wherein:
when the snap member (100) is unfolded as a single Zhang Liaoban, the first positioning protrusion (101) and the second positioning protrusion (102) are located at an intermediate portion between the first bending line (L1) and the second bending line (L1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810815548.XA CN108675101B (en) | 2018-07-24 | 2018-07-24 | Step fixing buckle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810815548.XA CN108675101B (en) | 2018-07-24 | 2018-07-24 | Step fixing buckle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108675101A CN108675101A (en) | 2018-10-19 |
| CN108675101B true CN108675101B (en) | 2024-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810815548.XA Active CN108675101B (en) | 2018-07-24 | 2018-07-24 | Step fixing buckle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108675101B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109230971B (en) * | 2018-10-30 | 2024-03-15 | 江苏飞亚金属制品有限公司 | Transmission shaft installation part of elevator step |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990028078U (en) * | 1997-12-24 | 1999-07-15 | 이종수 | Footrest fastening device for passenger conveyor |
| CN2920945Y (en) * | 2006-07-12 | 2007-07-11 | 顾晓隆 | Staircase steps adapted to repairing and changing |
| CN206126629U (en) * | 2016-09-21 | 2017-04-26 | 苏州市张桥五金有限公司 | Step shaft assembly |
| CN107626884A (en) * | 2017-11-01 | 2018-01-26 | 杭州东华链条集团有限公司 | A kind of escalator chain step chain press mounting die |
| CN208585930U (en) * | 2018-07-24 | 2019-03-08 | 迅达（中国）电梯有限公司 | Step fixed card buckle |
-
2018
- 2018-07-24 CN CN201810815548.XA patent/CN108675101B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990028078U (en) * | 1997-12-24 | 1999-07-15 | 이종수 | Footrest fastening device for passenger conveyor |
| CN2920945Y (en) * | 2006-07-12 | 2007-07-11 | 顾晓隆 | Staircase steps adapted to repairing and changing |
| CN206126629U (en) * | 2016-09-21 | 2017-04-26 | 苏州市张桥五金有限公司 | Step shaft assembly |
| CN107626884A (en) * | 2017-11-01 | 2018-01-26 | 杭州东华链条集团有限公司 | A kind of escalator chain step chain press mounting die |
| CN208585930U (en) * | 2018-07-24 | 2019-03-08 | 迅达（中国）电梯有限公司 | Step fixed card buckle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108675101A (en) | 2018-10-19 |
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