CN101456516B - Conveying system for conveying passenger/goods - Google Patents
Conveying system for conveying passenger/goods Download PDFInfo
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- CN101456516B CN101456516B CN2007101857445A CN200710185744A CN101456516B CN 101456516 B CN101456516 B CN 101456516B CN 2007101857445 A CN2007101857445 A CN 2007101857445A CN 200710185744 A CN200710185744 A CN 200710185744A CN 101456516 B CN101456516 B CN 101456516B
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Abstract
The invention relates to a transportation system for transporting passengers/cargo. The system comprises a splint actuating system which is directly engaged with the lower part of a traction chain through a drive chain and moves a splint of a movable walkway. The drive chain is provided with drive rollers which are made of a deformable and elastic material and are distributed at intervals. The chain links of the traction chain are connected through a connecting shaft; and the lower part is provided with teeth and claws engaged with the driven chain and the rollers.
Description
Technical field
The present invention relates to the delivery system of a kind of passenger or goods, relate in particular to a kind of moving walkways supporting plate actuating system.
Background technology
Traditional passenger conveying appliance,, as mechanical staircase or moving walkways (moving walkway), comprise step or supporting plate (pallet) chain of movement capable of circulation, so that the continuous moving along certain tracks to be provided.These steps or supporting plate are connected in and the synergistic step of actuating device or supporting plate chain ring.This actuating device is comprised of step or supporting plate chain, actuation gear, axle and electric drive motor usually.This CD-ROM drive motor activates this driven wheel, and this driven wheel passes motion to the chain link of step or supporting plate chain.Along with the movement of the chain link of this chain, step or supporting plate move on request.
For guaranteeing little speed fluctuations and the polygon effect that reduces in conventional delivery systems, need a large amount of teeth on actuation gear, this has just caused the diameter of gear larger.This large gear diameter has increased the head portion of system and the size of head portion, thereby has caused and must place aisle with dell.Connection between supporting plate and supporting plate chain is arranged on the below on supporting plate surface usually.Consider the gap that needs between two supporting plates in succession of restriction to meet security needs, the knuckle radius in inclination aisle need be limited.
With the actuating mechanism of forwarder in the midway location engagement, being suggested of other type, the device that for example proposes in document US3677388, WO2004/063078A1 and WO2004/054919A1.The general character of top each invention of mentioning is that they all propose to adopt the chain that with step or supporting plate be connected of linear activated system with mobile any type, and therefore drives supporting plate or the step chain of delivery system.Yet the chain of linear activated system can produce noise with the contacting of metal to metal of the chain internode that is connected with step or supporting plate.The overall structure that proposes in these documents does not allow to reduce the size of forwarder.The stock size in tradition aisle is much larger than size provided by the present invention.
Summary of the invention
The delivery system of the Bidirectional transporting realized that the present invention is designed, as moving walkways, passenger's traveling comfort and safety have been improved, reduced the height of delivery system upper end section and lower end section, reduced the cost of delivery system, need not to carry out large-scale civil engineering work for building dell, and make it to become a kind of light moving walkways system.
The supporting plate actuating system of moving walkways proposed by the invention comprises miniature gear motor, the short supporting plate that includes specially upper groove, little actuation gear, the actuator shaft that level is installed and the driving chain that is formed by messenger chain and a plurality of spaced apart deformable roller.Directly pawl or the engagement of the first arc geared assembly below each traction chain link with design of this driving chain.This short supporting plate allows this returning part that less radius is arranged, so the upper end head of delivery system is compared and can be had less height with scheme of the prior art with the lower end head.This little tooth and pawl design are below each chain link.This supporting plate can be the part of conduction chain, and near this area supported place, is connecting, and to allow the inclination aisle, less knuckle radius is arranged.The pawl engagement of deformable driven roller and chain link below.When the distortion on driven roller surpassed certain level due to larger contact force, this lower tooth can mesh with driving chain.This design has guaranteed that deformable driven roller and driving chain carry on a shoulder pole this larger power altogether.In addition, if the pivot pin of driven roller or bar are because some reason fractures, this actuating system still can continue trouble free service.
A lot of actuating modules can be used for the Large-scale Mobile aisle, and one can be placed in upper end and another can be placed in lower end thus.
Since the present invention can be applicable to the moving walkways of supporting plate surface and moving direction keeping parallelism, mechanical staircase (step passenger-carrying between the position of differing heights wherein for example, remain the step plane level), hereinafter, when mentioning supporting plate, the step of mechanical staircase also can be regarded supporting plate as.
Therefore, the present invention relates to a kind of delivery system for the movement of passengers/goods, it comprises:
A plurality of traction chain links, these a plurality of traction chain links utilize pivot pin to link together, and to form the chain that consists of the traction chain link, this pivot pin is perpendicular to vertical throughput direction D;
Transmit the actuating device (described actuating device comprises a plurality of driving chains and gear or other power-transmission system) of actuating movement from least one motor.
The invention is characterized in:
This delivery system comprises actuating device, and this actuating device is configured to transmit actuation movement from this actuating device to the chain that consists of the traction chain link;
The chain link of this conduction chain comprises the function surface with first geared assembly;
This actuating device comprises the second geared assembly, the shape of this second geared assembly matches with the first geared assembly, make this actuating device utilize mechanical interference and engagement between the first geared assembly and the second geared assembly to drive this traction chain link, and drive the described chain that is formed by the traction chain link on this throughput direction D.
System of the present invention can comprise a plurality of load conveying support plates, and this load conveying support plate has:
The stayed surface of carrying passenger/goods;
This function surface, this function surface is opposite with the stayed surface with traction chain link.
System of the present invention wishes that the engagement between driving chain and conduction chain can occur on one or both sides.Therefore, this actuating device can comprise:
According to the first of this throughput direction D between servo-actuated drive wheel and guiding drive wheel;
According to the second portion of this throughput direction D between guiding drive wheel and servo-actuated drive wheel;
Wherein, the mesh regional that is engaged between the first geared assembly and the second geared assembly carries out, and this mesh regional is selected from this first and first adds second portion.
In system of the present invention:
This first geared assembly comprises the concave arc perpendicular to this vertical throughput direction D;
This second geared assembly comprises the driven roller perpendicular to this vertical throughput direction D;
To form the first engagement:
On this first direction that is engaged on perpendicular to this vertical throughput direction D;
When driven roller is accommodated in this concave arc, this first engagement at this actuating device with by the chain that forms of traction chain link between.
Similarly, in system of the present invention:
This first geared assembly comprises a plurality of toothed projections perpendicular to vertical throughput direction D;
This second geared assembly comprises a plurality of recesses perpendicular to vertical throughput direction D;
To form the second engagement:
On this second direction that is engaged on perpendicular to vertical throughput direction D;
When this toothed projections is contained in recess, this second engagement at this actuating device with by the chain that forms of traction chain link between;
When driven roller was out of shape in this first engagement, this second engagement avoided producing large load on described driven roller.
This actuating device can comprise:
At least one pair of is by the driving chain that chain link and sleeve form, and every a pair of driving chain all positioned opposite becomes to make the axle conllinear of this sleeve;
A plurality of driven rollers between driving chain, the axle conllinear of the axle of described driven roller and two opposed sleeves.
In this case, the length of this driven roller is substantially equal to the spacing between every pair of driving chain.
Equally, system of the present invention can comprise the driven roller for each chain link of this conduction chain.
In addition, this actuating device can comprise at least one by the driving chain that chain link and sleeve form, and a plurality of recess configuration become to make this tooth and this driving chain mesh in described recess, and described recess is defined between this chain link and sleeve.
Randomly, this first geared assembly (being tooth and pawl) but tegillum is pressed with the first skin, this first skin comprises the material that is selected from deformable and elastomeric material.
Similarly, this driven roller can be made by the material that is selected from deformable and elastomeric material.
In other situation, but this driven roller tegillum is pressed with the second skin, and this second skin comprises the material that is selected from deformable and elastomeric material.
Equally, this driven roller can be made by polymeric material.
Perhaps, but this driven roller tegillum is pressed with the second skin of being made by polymeric material.
In those situations, the optional own elasticity body of this polymeric material, polyurethane and their combination.
In addition, the sleeve of this driving chain can have the 3rd skin, and the 3rd skin comprises the material that is selected from deformable and elastomeric material.
The 3rd skin can be made by polymeric material.
In those situations, the optional own elasticity body of this polymeric material, polyurethane and their combination.
These first, second, and third skins make the engagement between the different elements that participates in the motion transmission more more level and smooth than the metal-metal contact, except extending the service life of described element, also can have more quietly operation, and weaken in the contact between starting and ending engagement moment.
Another feature of system of the present invention expectation is, the connection by pivot pin between supporting plate utilizes lubricant to lubricate, and this lubricant is selected from dry lubricant and moistening lubrication prescription.
Being connected and can realizing by ball bearing of main shaft or friction bearing between the axle of this driven roller and this driven roller.
In addition, this driving chain can have the deflector roll coaxial with each coupling spindle, this deflector roll limits the path of this driving chain fully by guide and inverse pairs guide, to allow driving chain be pushed and work, and can avoid as making this driving chain be pulled work necessary tension force in the tensioning shaft of described driving chain.
In a word, the present invention relates to a kind ofly by driving chain, directly with the bottom of conduction chain, mesh the supporting plate actuating system of the supporting plate that activates moving walkways.This driving chain has the driven roller spaced apart of being made by deformable and elastomeric material.The chain link of conduction chain has tooth and the pawl with driving chain and roller engagement in bottom.Short supporting plate and traction system allow return phase that less radius is arranged, and have therefore reduced the height of aisle head.In addition, the surface near supporting plate that is set up due to adapter shaft, thereby the inclination moving walkways that likely the design transition radius is less and need not between supporting plate to open wide large space, reduced the overall length that is used for the moving walkways at the concrete elevation angle, and the space that allows to exist between supporting plate reduces.This system allows in the different piece setting of the moving walkways actuating more than.In the present invention, the overall dimensions of moving walkways has dwindled, and has guaranteed low noise and low vibration, has improved passenger's traveling comfort.
Description of drawings
Below briefly described a series of accompanying drawings to help understanding better the present invention, these accompanying drawings are about one embodiment of the invention, and it is as the indefiniteness example.
Fig. 1 is the schematic diagram with inclination moving walkways of actuating system of the present invention.
Fig. 2 is the schematic diagram of the moving walkways parallel with actuating system of the present invention.
Fig. 3 and 4 is the enlarged side views with the supporting plate actuating system of the one or both sides of conduction chain engagement.
Fig. 5 is the transparent view with the supporting plate actuating system of conduction chain engagement.
Fig. 6 is the birds-eye view of amplification with driving chain of deformable driven roller.
Fig. 7 is the transparent view that demonstrates Contact Tooth and the traction chain link that contacts circular arc.
Fig. 8 demonstrates the lateral plan with the outer field Contact Tooth of lamination and the traction chain link that contacts circular arc.
Fig. 9 is the transparent view of driving chain, has laterally assembled guiding piece to limit the path of driving chain fully.
Figure 10 is the detailed perspective view with deformable driven roller and driving chain of the side direction guiding roller that limits path.
The specific embodiment
It is to be applied to moving walkways that the present invention will be described as.But, should be appreciated that design described in the invention also can be applicable to the delivery system of other type.The system in the present invention that should also be noted that can realize two-way conveying articles/people.
Fig. 1 shows the moving walkways with a supporting construction, and this supporting construction comprises upper end section or upper end head (1), lower end section or lower end head (2) and interlude (3).The crawling band consists of a series of chain links (100) that connect by pivot pin (4).These chain links (100) are kept by bearing roller (200), and bearing roller is by guide (230) guiding, and this guide is according to the support contour design of moving walkways.This guide (230) comprise the section of returning (211) and under return to section (210), they are at two ends of this system guiding chain links (100).Compare with aisle of the prior art, on return section (211) and under return to the radius of section (210) can be very little, aisle can greatly reduce the height of head.
In a preferred structure, tow chain (100) is driven by actuating device, this actuating device consists of at least two driving chains (300), this driving chain (300) has deformable driven roller (330), and this driven roller is configured to the first arc contact device (130) engagement with the bottom of the chain link (100) of this chain.Deformable driven roller (330) in being assemblied in the first arc contact device (130), this conduction chain is also driven by the second profile of tooth contact device (131) of chain link (100) bottom.The recess engagement that these teeth (131) are configured to and limit between the chain link of driving chain (300) and sleeve.This system also comprises a fixed part (500), this fixed part is configured to the side contacts with driving chain (300), this side is in contrast to driving chain that side with traction chain link (100) engagement, in order in mesh regional, driving chain (300) is pushed against on traction chain link (100), to avoid the separation between driving chain (300) and traction chain link (100).
Actuating to driving chain (300) comprises: small drive gear (310,320), guide wheel, this guiding drive wheel (310) and flower wheel, servo-actuated drive wheel (320), they are by axle drive shaft (311,321) maintenance, motor drive shaft, motor drive shaft (311) and servo axis, servo-actuated axle drive shaft (321).Motor drive shaft (311) drives actuating by actuating device, and this actuating device forms by activating chain (400), and this driving chain is activated by the gear motor (410) that level is installed on moving walkways upper end section (1).
Fig. 5 shows the basic structure of supporting plate actuating system (100), shows little actuation gear (310,320) and axle (311,321), is used for activating this driving chain (300) and deformable driven roller (330) thereof.
Fig. 6 shows the enlarged view of the driving chain (300) with spaced apart deformable driven roller (330).This driven roller (330) can be made by the second lamination outer (340), maybe can have the second lamination outer (340), this second lamination outer (340) is made by deformable or elastomeric material, for example the poly-mer of polyurethane, elastic body or any type.The 3rd skin (351) of sleeve (350) and the described sleeve of coating also can be found out in the drawings.
Fig. 7 shows in detail the first arc contact device or pawl (130) and the second profile of tooth contact device (131) that is positioned at traction chain link (100) below.In order to activate this tow chain (100), some deformable driven rollers (330) will with pawl (130) engagement of the same quantity of chain link (100) below., when the contact force that deformable driven roller (330) bears excessive (this may be the elongation due to the tow chain that wearing and tearing cause (100) or driving chain (300)), will produce in deformable driven roller (330) than the more distortion of expection.This situation will cause the recess that limits between the tooth (131) of traction chain link below and chain link at driving chain (300) and sleeve to be meshed.As a result, this larger power will be shared jointly by deformable driven roller (330) and tooth (131).This design has guaranteed that this chain of this traction chain link (100) under any circumstance all can be activated safely, and can extend the life-span of deformable driven roller (330) and driving chain (300).
Fig. 8 shows one section traction chain link with pawl (130) and tooth (131), this pawl (130) and tooth (131) are coated with one deck deformable or elastomeric material (190,191), as the polymeric material of elastic body, polyurethane or any type.
the first skin (190, 191), the second skin (340) and the 3rd skin (351) make the engagement between the different elements that participates in the motion transmission more level and smooth than the metal-metal contact, this means to have and more quietly operate and weakened in the contact between starting and ending engagement moment, extended in addition the service life of described element, namely, the life-span of the life-span of the first geared assembly that is formed by concave arc (130) and tooth (131) and the second geared assembly of being formed by driven roller (330) and the recess (331) that limits between the sleeve (350) of driving chain (300) and chain link (360).
Fig. 1 shows in detail the have transitional region inclination forwarder of (240,241,242,243).Due to the pivot pin that connects traction chain link (100) or the position of bar (4), this knuckle radius can reduce, and makes the overall dimensions of this forwarder less than the size of structure of the prior art.
Fig. 9 shows in detail the have deflector roll driving chain (300) of (370), this deflector roll cycles through guiding and pairing guide path (400), thereby allow the top set (300A) of this driving chain be pushed and work, so that traction chain link (100) is mobile.Due to this configuration, thereby needn't be in the tensioning shaft (321) of driving chain with large tension force, guarantee that this chain works by traction all the time, this has also increased the service life of this chain and the safety under the overload situations of aisle.
This deflector roll (370) utilizes a major axis (355) to be installed on the side of driving chain, as shown in figure 10.
In other words, this system also comprises:
Guide (400) and pairing guide (400), be positioned at driving chain (300) both sides to limit the path of driving chain (300);
A plurality of deflector rolls (370):
The coaxial installation of axle (355) with the sleeve of driving chain (300);
Be configured to cycle through guide (400) and pairing guide (400), to avoid because the loss of tension on driving chain (300) causes this chain skew, and avoid, in tensioning shaft (321), hightension was arranged.
Claims (25)
1. the delivery system of a movement of passengers/goods comprises:
A plurality of traction chain links (100), these a plurality of traction chain links (100) utilize pivot pin (4) to link together, and to form the chain that consists of traction chain link (100), this pivot pin (4) is perpendicular to vertical throughput direction (D);
Transmit the actuating device (400) of actuating movement from least one motor (410);
This delivery system comprises actuating device (300,320,321,310,311), and this actuating device (300,320,321,310,311) is configured to transmit actuation movement from this actuating device (400) to the chain that consists of traction chain link (100);
This traction chain link (100) comprises the function surface with the first geared assembly (130,131);
This actuating device comprises the second geared assembly (330,331), the shape of this second geared assembly and the first geared assembly (130,131) match, make this actuating device utilize the first geared assembly (130,131) engagement between and the second geared assembly (330,331) drives this traction chain link (100), and at the described chain that is formed by traction chain link (100) of the upper driving of this throughput direction (D);
It is characterized in that,
This first geared assembly comprises the concave arc (130) perpendicular to this vertical throughput direction (D);
This second geared assembly comprises the driven roller (330) perpendicular to this vertical throughput direction (D);
To form the first engagement (130-330):
This first engagement (130-330) is on the direction of vertical throughput direction (D) perpendicular to this;
When driven roller (330) was accommodated in this concave arc (130), this first engagement (130-330) was positioned between this actuating device (300) and the chain by traction chain link (100) formation;
Wherein this first geared assembly also comprises a plurality of toothed projections (131) perpendicular to vertical throughput direction (D);
This second geared assembly comprises a plurality of recesses (331) perpendicular to vertical throughput direction (D);
To form the second engagement (131-331):
This second engagement (131-331) is on the direction perpendicular to vertical throughput direction (D);
When this toothed projections (131) was contained in recess (331), this second engagement (131-331) was positioned between this actuating device (300) and the chain by traction chain link (100) formation;
When driven roller (330) was out of shape in this first engagement (130-330), this second engagement (131-331) was avoided at the large load of the upper generation of described driven roller (330);
Wherein this actuating device comprises:
At least two driving chains (300) that formed by chain link (360) and sleeve (350), driving chain (300) all positioned opposite become to make axle (355) conllinear of this sleeve;
Driven roller (330) is positioned between two driving chains (300), axle (355) conllinear of the axle (5) of described driven roller (330) and two opposed sleeves;
Wherein except described driven roller (330) is assemblied in this concave arc (130), this driving chain (300) is also driven by described a plurality of toothed projections (131), the recess engagement that described a plurality of toothed projections (131) are configured to when driven roller is out of shape and limit between the chain link of driving chain (300) and sleeve.
2. the system as claimed in claim 1, is characterized in that, comprises a plurality of load conveying support plates, and this load conveying support plate has:
The stayed surface (160) of carrying passenger/goods;
This function surface, this function surface is opposite with the stayed surface with traction chain link (100) (160).
3. system as described in any one in claim 1-2, is characterized in that, this actuating device (300) comprising:
Be positioned at first (300A) between servo-actuated drive wheel (320) and guiding drive wheel (310) according to this throughput direction (D);
Be positioned at the second portion (300B) that guides between drive wheel (310) and servo-actuated drive wheel (320) according to this throughput direction (D);
Wherein, the first geared assembly (130,131) mesh regional that is engaged between and the second geared assembly (330,331) carries out, and this mesh regional is selected from this first (300A) and first (300A) adds second portion (300B).
4. the system as claimed in claim 1, is characterized in that, the length of this driven roller (330) is substantially equal to the spacing between every pair of driving chain (300).
5. the system as claimed in claim 1, is characterized in that, comprises the driven roller (330) for each traction chain link (100).
6. system as described in any one in claim 1-2,4-5, is characterized in that, this first geared assembly (130,131) tegillum is pressed with the first skin (190,191), and this first skin comprises deformable material.
7. system as described in any one in claim 1-2,4-5, is characterized in that, this first geared assembly (130,131) tegillum is pressed with the first skin (190,191), and this first skin comprises elastomeric material.
8. system as described in any one in claim 1-2,4-5, is characterized in that, this driven roller (330) is made by deformable material.
9. system as described in any one in claim 1-2,4-5, is characterized in that, this driven roller (330) is made by elastomeric material.
10. system as described in any one in claim 1-2,4-5, is characterized in that, this driven roller (330) tegillum is pressed with the second skin (340), and this second skin comprises deformable material.
11. system as described in any one in claim 1-2,4-5, is characterized in that, this driven roller (330) tegillum is pressed with the second skin (340), and this second skin comprises elastomeric material.
12. system as claimed in claim 8, is characterized in that, this driven roller (330) is made by polymeric material.
13. system as claimed in claim 10, is characterized in that, this driven roller (330) tegillum is pressed with the second skin (340) of being made by polymeric material.
14. system as claimed in claim 12, is characterized in that, this polymeric material is selected from elastic body.
15. system as claimed in claim 12, is characterized in that, this polymeric material is selected from polyurethane.
16. system as described in any one in claim 1-2,4-5, is characterized in that, the sleeve (350) of this driving chain (300) is coated with the 3rd skin (351), and the 3rd skin comprises deformable material.
17. system as described in any one in claim 1-2,4-5, is characterized in that, the sleeve (350) of this driving chain (300) is coated with the 3rd skin (351), and the 3rd skin comprises elastomeric material.
18. system as claimed in claim 16, is characterized in that, the 3rd skin (351) is made by polymeric material.
19. system as claimed in claim 18, is characterized in that, this polymeric material is selected from elastic body.
20. system as claimed in claim 18, is characterized in that, this polymeric material is selected from polyurethane.
21. system as described in any one in claim 1-2,4-5 is characterized in that the connection by pivot pin (4) between chain link utilizes lubricant to lubricate, this lubricant is selected from dry lubricant and moistening lubrication prescription.
22. system as described in any one in claim 1-2,4-5, is characterized in that, being connected by ball bearing of main shaft between the axle (5) of this driven roller (330) and this driven roller (330) realizes.
23. system as described in any one in claim 1-2,4-5, it is characterized in that, also comprise fixed part (500), this fixed part is formed on driving chain (300) and the opposite opposite side of side traction chain link (100) engagement and contacts with driving chain (300), at this mesh regional, driving chain (300) is pushed against on traction chain link (100), to avoid the separation between driving chain (300) and traction chain link (100).
24. system as described in any one in claim 1-2,4-5, is characterized in that, also comprises:
Be positioned on driving chain (300) both sides guide (400) and the guide (400) that matches with the path that limits driving chain (300);
A plurality of deflector rolls (370):
The coaxial installation of axle (355) of this deflector roll and each sleeve of driving chain (300);
This deflector roll is configured to cycle through this guide (400) and pairing guide (400), to avoid because the loss of tension on driving chain (300) causes the chain skew, and avoids, in tensioning shaft (321), hightension was arranged.
25. system as claimed in claim 24, is characterized in that, also comprises bearing in the axle (5 ') of chain and the connection between deflector roll (370).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101857445A CN101456516B (en) | 2007-12-13 | 2007-12-13 | Conveying system for conveying passenger/goods |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101857445A CN101456516B (en) | 2007-12-13 | 2007-12-13 | Conveying system for conveying passenger/goods |
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| Publication Number | Publication Date |
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| CN101456516A CN101456516A (en) | 2009-06-17 |
| CN101456516B true CN101456516B (en) | 2013-11-13 |
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| CN2007101857445A Active CN101456516B (en) | 2007-12-13 | 2007-12-13 | Conveying system for conveying passenger/goods |
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| JP2011051730A (en) * | 2009-09-02 | 2011-03-17 | Toshiba Elevator Co Ltd | Conveyor device |
| CN103359596A (en) * | 2012-04-10 | 2013-10-23 | 通力股份公司 | Pedal chain, chain wheel and moving sidewalk for conveyance system |
| IN2014DN11022A (en) | 2012-07-10 | 2015-09-25 | Otis Elevator Co | |
| AT515201B1 (en) * | 2014-03-11 | 2015-07-15 | Rosendahl Nextrom Gmbh | Device for conveying elongated objects |
| CN108177932A (en) * | 2018-02-28 | 2018-06-19 | 商丘腾跃包装机械有限公司 | A kind of bottle blowing machine transmission device |
| CN109230273B (en) * | 2018-09-19 | 2024-06-11 | 浙江金福隆机床附件有限公司 | Long-distance drag chain waist collapse preventing device |
| US11479446B2 (en) * | 2018-10-30 | 2022-10-25 | Inventio Ag | Conveying chain for a panel belt of a moving walkway of small overall height |
| CN111173885A (en) * | 2020-03-06 | 2020-05-19 | 重庆科技学院 | Anode vertical mould multi-pole buffer receiver |
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| JP昭54-159987A 1979.12.18 |
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| CN101456516A (en) | 2009-06-17 |
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