CN205772911U - A kind of single-beam weighing platform - Google Patents

A kind of single-beam weighing platform Download PDF

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Publication number
CN205772911U
CN205772911U CN201620619116.8U CN201620619116U CN205772911U CN 205772911 U CN205772911 U CN 205772911U CN 201620619116 U CN201620619116 U CN 201620619116U CN 205772911 U CN205772911 U CN 205772911U
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China
Prior art keywords
roller
strand
portal frame
placement unit
way
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Withdrawn - After Issue
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CN201620619116.8U
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Chinese (zh)
Inventor
桑建伟
代东明
康海民
赵子法
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BEIJING ZHONGYUANTONG SCIENCE AND TECHNOLOGY CO LTD
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BEIJING ZHONGYUANTONG SCIENCE AND TECHNOLOGY CO LTD
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Priority to CN201620619116.8U priority Critical patent/CN205772911U/en
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Abstract

This utility model belongs to strand online weighing equipment technical field, disclose a kind of single-beam weighing platform, it is perpendicular to roller-way length direction including edge and is arranged on a portal frame above roller-way, described portal frame is provided with weighing device, described weighing device connects at least two placement unit for capturing strand, and at least two placement unit is distributed along the length direction of roller-way;The equal liftable of described placement unit.This utility model is by using single portal frame, and weighing device and elevating mechanism are all connected on this portal frame, and weighing device connects at least two placement unit having along the distribution of roller-way length direction, it is achieved to the crawl of strand with weigh;Whole single-beam weighing platform not only floor space is little, distribution on roller-way length direction is smaller, and haulage equipment etc. is the most more convenient, and the impact for troubleshooting is smaller, facilitating the quick handling failure of operator, the impact on strand manufacturing schedule is greatly reduced.

Description

A kind of single-beam weighing platform
Technical field
This utility model relates to strand online weighing equipment technical field, particularly to a kind of single-beam weighing platform.
Background technology
In strand production process, need the strand on roller-way is weighed, in order to the cut-out adjusting strand in time is long Degree.As it is shown in figure 1, the weighing platform that part steel mill uses at present at least includes two gantry being separately positioned on strand two ends Frame, each portal frame is equipped with: lifting hydraulic cylinder, hanging hook assembly etc., and specific works principle is: by two or more gantry Strand on roller-way is sling by the hanging hook assembly on frame, weighs after stablizing certain time, and is fed back to by the weight data of strand Scale system, in order to revise cut lengths, change the Cutting Length of next strand, it is ensured that the weight of strand maintains certain limit In.
As it is shown in figure 1, owing to existing weighing platform at least needs to arrange two portal frames 1, hydraulic cylinder fills 2 at portal frame 1 On, it is achieved promote the operation that strand is weighed;Each portal frame 1 will stride across roller-way and arrange, and each supporting leg of portal frame 1 will account for Use substantial amounts of ground space.Due to the restriction of strand length, two or more portal frames 1 must arrange closer, otherwise Will cause casting blank deformation, impact is weighed;When Continuous Casting Rolls road goes wrong, the strand that such as conticaster produces cannot cut off When opening, because there being fixing, to close on setting multiple portal frames 1 above continuous caster roller way, due to the interference of multiple portal frames 1, That be not switched off, longer strand cannot hang away from roller-way, this accident can be caused to process, have a strong impact on the life of strand Product progress.
Utility model content
(1) to solve the technical problem that
The technical problems to be solved in the utility model is: more for solving existing strand weighing platform portal frame, strand roller Maintenance operation, the problem delaying manufacturing schedule is had a strong impact on when road breaks down.
(2) technical scheme
In order to solve above-mentioned technical problem, this utility model provides a kind of single-beam weighing platform, including along being perpendicular to roller Road length direction is arranged on a portal frame above roller-way, and described portal frame is provided with weighing device, and described weighing device is even Being connected at least two placement unit for capturing strand, at least two placement unit is distributed along the length direction of roller-way;Described The equal liftable of placement unit.
Wherein, described weighing device is connected with described portal frame by elevating mechanism.
Wherein, described portal frame is across a plurality of roller-way be arrangeding in parallel, and on described portal frame, corresponding roller-way is provided with multiple institute Stating weighing device, each described weighing device is respectively connected with at least two placement unit.
Wherein, described weighing device includes: first crossbeam, second cross beam and be connected to first crossbeam and second cross beam it Between LOAD CELLS, second cross beam is positioned at the lower section of first crossbeam, and described placement unit hangs on below second cross beam, first Crossbeam is connected with described elevating mechanism.
Wherein, described placement unit is suspension ring, and described suspension ring can drop between the adjacent rollers on roller-way, and strand passes through Time be formed directly into described suspension ring.
Wherein, described placement unit also includes the suspension hook being connected to above suspension ring.
Wherein, described portal frame is character "door" form structure, including two supporting legs and be connected to the top between two described supporting legs Beam, described elevating mechanism is connected with described back timber.
This utility model also disclosed a kind of single-beam weighing platform, is perpendicular to roller-way length direction including edge and is arranged on roller-way One portal frame of top, described portal frame is provided with weighing device, and described weighing device connects to be had for capturing strand extremely Few two placement units, at least two placement unit is distributed along the length direction of roller-way;The equal liftable of described placement unit;
Described placement unit is all connected with described weighing device by elevating mechanism.
Wherein, described portal frame is across a plurality of roller-way be arrangeding in parallel, and on described portal frame, corresponding roller-way is provided with multiple institute Stating weighing device, each described weighing device is respectively connected with at least two placement unit.
Wherein, described weighing device includes: first crossbeam, second cross beam and be connected to first crossbeam and second cross beam it Between LOAD CELLS, second cross beam is positioned at the lower section of first crossbeam, and described placement unit hangs on below second cross beam, first Crossbeam is connected with described portal frame.
Wherein, described placement unit is suspension ring, and described suspension ring can drop between the adjacent rollers on roller-way, and strand passes through Time be formed directly into described suspension ring.
Wherein, described portal frame is character "door" form structure, including two supporting legs and be connected to the top between two described supporting legs Beam, described first crossbeam is connected with described back timber.
(3) beneficial effect
Technique scheme has the advantage that this utility model one single-beam weighing platform, by using single dragon Door frame, weighing device and elevating mechanism are all connected on this portal frame, and weighing device connects to be had along the distribution of roller-way length direction At least two placement unit, it is achieved to the crawl of strand with weigh;Whole single-beam weighing platform not only floor space is little, at roller-way Distribution on length direction is smaller, and personnel walk on the ground, haulage equipment etc. is the most more convenient, for processing strand not Cut and need the impact of troubleshooting hung away smaller, facilitate the quick handling failure of operator, strand is produced into The impact of degree is greatly reduced.
Accompanying drawing explanation
Fig. 1 is the structural representation of strand weighing platform in prior art;
Fig. 2 is one of structural representation of single-beam weighing platform described in this utility model embodiment one;
Fig. 3 is described in this utility model embodiment one the two of the structural representation of single-beam weighing platform.
Wherein, 1, portal frame;11, supporting leg;2, hydraulic cylinder;3, elevating mechanism;4, weighing device;41, first crossbeam;42、 LOAD CELLS;43, second cross beam;44, suspension ring;45, suspension hook;5, strand;6, roller-way;61, roller.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, detailed description of the invention of the present utility model is described in further detail.Below Embodiment is used for illustrating this utility model, but is not limited to scope of the present utility model.
In description of the present utility model, it should be noted that except as otherwise noted, " multiple " are meant that two or two More than individual;Term " on ", D score, "left", "right", " interior ", " outward ", " front end ", " rear end ", " head ", the instruction such as " afterbody " Orientation or position relationship are based on orientation shown in the drawings or position relationship, are for only for ease of description this utility model and simplification Describe rather than indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and behaviour Make, therefore it is not intended that to restriction of the present utility model.Additionally, term " first ", " second ", " the 3rd " etc. are only used for describing Purpose, and it is not intended that indicate or hint relative importance.
In description of the present utility model, in addition it is also necessary to explanation, unless otherwise clearly defined and limited, term " peace Dress ", should be interpreted broadly " being connected ", " connection ", for example, it may be fix connection, it is also possible to be to removably connect, or integratedly Connect;Can be to be mechanically connected, it is also possible to be electrical connection;Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary. For the ordinary skill in the art, the visual concrete condition above-mentioned term of understanding specifically containing in this utility model Justice.
Embodiment one:
As shown in Figures 2 and 3, this utility model discloses a kind of single-beam weighing platform, including along being perpendicular to roller-way 6 length Direction is arranged on a portal frame 1 above roller-way 6, and described portal frame 1 is provided with weighing device 4, and described weighing device 4 connects Having at least two placement unit for capturing strand 5, at least two placement unit is distributed along the length direction of roller-way 6;Described The equal liftable of placement unit.During use, strand 5 is sling by placement unit from the two ends of strand 5, and aloft hovers a period of time Make strand 5 stable, then read strand 5 weight that weighing device 4 claims, adjust the Cutting Length of strand 5 the most in good time, will casting The weight of base 5 maintain one suitably in the range of.Certainly, for long strand 5, the quantity of placement unit can increase To three, four etc., multiple placement unit even distribution, it is to avoid strand 5 is deformed phenomenon because stress excessively concentrates.So As long as a portal frame 1 just can realize the online weighing to the strand 5 on roller-way 6, whole single-beam weighing platform not only takes up an area Area is little, and the distribution on roller-way 6 length direction is smaller, and personnel walk on the ground, haulage equipment etc. is the most more convenient, The impact of the troubleshooting that needs hang away for process strand 5 is cut is smaller, facilitates operator quickly to process event Barrier, the impact on strand 5 manufacturing schedule is greatly reduced.Elevating mechanism 3 is preferably hydraulic cylinder 2.
Concrete, described weighing device 4 is connected with described portal frame 1 by elevating mechanism 3.I.e. in weighing process, whole Individual weighing device 4 is all as what elevating mechanism 3 moved up and down together, and such structure is higher to the requirement of elevating mechanism 3, Elevating mechanism 3 needs the force rate born bigger;But elevating mechanism 3 will not weighing result impact, and weighing result is more accurate.
Preferably, as in figure 2 it is shown, described portal frame 1 is across a plurality of roller-way 6 be arrangeding in parallel, corresponding on described portal frame 1 Roller-way 6 is provided with multiple described weighing device 4, and each described weighing device 4 is respectively connected with at least two placement unit.I.e. one dragon Many group elevating mechanisms 3 and weighing device 4 can be set on door frame 1 simultaneously, be simultaneous for a plurality of roller-way 6 and carry out weighing operation, greatly Decrease greatly the floor area taken when portal frame 1 is installed.
Concrete, as it is shown on figure 3, described weighing device 4 includes: first crossbeam 41, second cross beam 43 and be connected to first LOAD CELLS 42 between crossbeam 41 and second cross beam 43, second cross beam 43 is positioned at the lower section of first crossbeam 41, described crawl Unit hangs on below second cross beam 43, and first crossbeam 41 is connected with described elevating mechanism 3.
LOAD CELLS 42 is preferably provided with two, is separately mounted to the position at the two ends of first crossbeam 41.Second cross beam 43 be provided with multiple horizontal distribution, for installing the connecting hole of placement unit, the convenient installation site to placement unit is carried out Fine setting, until meeting the requirement that strand 5 is weighed, it is achieved the weighing to the strand 5 of different length, it is ensured that strand 5 uniform force.
It addition, if strand 5 length changes greatly, when fine setting cannot solve, if strand 5 entirety is longer, can be second One or more placement units are increased, it is to avoid strand 5 deforms in the middle of crossbeam 43;If strand 5 is the shortest, second cross beam 43 two ends Placement unit can't reach, and can only utilize the two or more placement units in the middle part of second cross beam 43 to capture.
I.e. on the premise of not mobile gantry frame 1, this utility model can realize carrying out the strand 5 of different length online Weigh, and can guarantee that strand 5 uniform force, will not deform.
Preferably, described placement unit is suspension ring 44, described suspension ring 44 can drop to the adjacent rollers 61 on roller-way 6 it Between, strand 5 is formed directly into described suspension ring 44 through out-of-date.As it is shown on figure 3, suspension ring 44 are just to strand 5, strand 5 carries through roller 61 Coming over to be formed directly in suspension ring 44, strand 5 arrives specific bit and postpones, elevating mechanism 3 drive weighing device 4 together with suspension ring 44 on Rising, the strand 5 penetrating suspension ring 44 is lifted, and reads the weighing results of weighing device 4 after strand 5 is stable.Weigh end Weighing device 4, suspension ring 44, strand 5 are put down by rear lifting mechanism 3 more together, strand 5 fall on roller 61 after suspension ring 44 continue to Lower motion a small distance is in order to avoid affecting strand 5 and moving;Strand 5 continues forward and through suspension ring 44 under the driving of roller 61, Suspension ring 44 remain stationary as, and wait hanging and take off a strand 5.
Further, described placement unit also includes the suspension hook 45 being connected to above suspension ring 44.I.e. second cross beam 43 with hang Connected by suspension hook 45 between ring 44, be convenient for changing suspension ring 44.
Concrete, as shown in Figures 2 and 3, described portal frame 1 is character "door" form structure, including two supporting legs 11 and be connected to Back timber between two described supporting legs 11, described elevating mechanism 3 is connected with described back timber.Supporting leg 11 fixes on the ground, takies Be ground space, back timber is connected between two supporting legs 11;In prior art, multiple portal frames 1 close on setting, supporting leg 11 and Lifting operation and terrestrial operation all can be impacted by back timber, and causing trouble cannot process in time, seriously delays the production of strand 5 Progress.And this utility model uses single portal frame 1, roller-way 6 prevents one arrive back timber, be easy to during lifting keep away Open, roller-way 6 side only one of which supporting leg 11, the most easily avoid during carrying so that the strand 5 being not switched off can quickly be hung Walking, fault handling time is greatly shortened, and the impact on strand 5 manufacturing schedule is the least.
Embodiment two:
The present embodiment is different from the installation site differing only in elevating mechanism 3 of embodiment one.
Concrete, this utility model also disclosed a kind of single-beam weighing platform, is perpendicular to roller-way 6 length direction including edge and sets Putting a portal frame 1 above roller-way 6, described portal frame 1 is provided with weighing device 4, described weighing device 4 connect have for Capturing at least two placement unit of strand 5, at least two placement unit is distributed along the length direction of roller-way 6;Described crawl is single Unit's all liftables;
Described placement unit is all connected with described weighing device 4 by elevating mechanism 3.Elevating mechanism 3 is preferably hydraulic cylinder 2。
I.e. weighing device 4 is integrally fixed on portal frame 1, and elevating mechanism 3 is suspended on dress of weighing together with placement unit Putting below 4, only placement unit and strand 5 are along with elevating mechanism 3 raising and lowering.
During use, strand 5 is sling by placement unit from the two ends of strand 5, and a period of time of aloft hovering makes strand 5 steady Fixed, then read strand 5 weight that weighing device 4 claims, the convenient Cutting Length in good time adjusting strand 5, by the weight of strand 5 Maintain one suitably in the range of.Certainly, for long strand 5, the quantity of placement unit can increase to three, four Individual etc., multiple placement unit even distribution, it is to avoid strand 5 is deformed phenomenon because stress excessively concentrates.If so one Portal frame 1 just can realize the online weighing to the strand 5 on roller-way 6, and whole single-beam weighing platform not only floor space is little, Distribution on roller-way 6 length direction is smaller, and personnel walk on the ground, haulage equipment etc. is the most more convenient, for processing Strand 5 is cut and needs the impact of troubleshooting hung away smaller, facilitates the quick handling failure of operator, to strand The impact of 5 manufacturing schedules is greatly reduced.
On the basis of weighing using single portal frame 1 to realize, it is useful that the program has had resulted in described in embodiment one Effect, adds in this programme, and elevating mechanism 3 has only to bear placement unit and the action of gravity of strand 5, in weighing process The active force that elevating mechanism 3 is subject to is less, and the requirement to elevating mechanism 3 reduces further, reduces equipment cost.
Preferably, described portal frame 1 is across a plurality of roller-way 6 be arrangeding in parallel, and on described portal frame 1, corresponding roller-way 6 is provided with Multiple described weighing devices 4, each described weighing device 4 is respectively connected with at least two placement unit.Can on i.e. one portal frame 1 To arrange many group elevating mechanisms 3 and weighing device 4 simultaneously, it is simultaneous for a plurality of roller-way 6 and carries out weighing operation, greatly reduce dragon The floor area that door frame 1 takies when installing.
Concrete, described weighing device 4 includes: first crossbeam 41, second cross beam 43 and be connected to first crossbeam 41 and the LOAD CELLS 42 between two crossbeams 43, second cross beam 43 is positioned at the lower section of first crossbeam 41, and described placement unit hangs on Below second cross beam 43, first crossbeam 41 is connected with described portal frame 1.
LOAD CELLS 42 is preferably provided with two, is separately mounted to the position at the two ends of first crossbeam 41.Second cross beam 43 be provided with multiple horizontal distribution, for installing the connecting hole of elevating mechanism 3, convenient to elevating mechanism 3 and placement unit Installation site is finely adjusted, until meeting the requirement that strand 5 is weighed, it is achieved the weighing to the strand 5 of different length, it is ensured that strand 5 uniform force.
It addition, if strand 5 length changes greatly, when fine setting cannot solve, if strand 5 entirety is longer, then can be One or more placement units are increased, it is to avoid strand 5 deforms in the middle of two crossbeams 43;If strand 5 is the shortest, second cross beam 43 two ends Placement unit can't reach, can only utilize the two or more placement units in the middle part of second cross beam 43 to capture.
I.e. on the premise of not mobile gantry frame 1, this utility model can realize carrying out the strand 5 of different length online Weigh, and can guarantee that strand 5 uniform force, will not deform.
Preferably, described placement unit is suspension ring 44, described suspension ring 44 can drop to the adjacent rollers 61 on roller-way 6 it Between, strand 5 is formed directly into described suspension ring 44 through out-of-date.Suspension ring 44 are just to strand 5, and strand 5 comes directly to wear through roller 61 conveying Entering in suspension ring 44, strand 5 arrives specific bit and postpones, and elevating mechanism 3 drives weighing device 4 to rise together with suspension ring 44, penetrates and hangs The strand 5 of ring 44 is lifted, and reads the weighing results of weighing device 4 after strand 5 is stable.Weigh end rear lifting mechanism Weighing device 4, suspension ring 44, strand 5 are put down by 3 more together, strand 5 fall on roller 61 after suspension ring 44 to continue to move downward one little Segment distance is in order to avoid affecting strand 5 and moving;Strand 5 continues forward under the driving of roller 61 and through suspension ring 44, suspension ring 44 keep Motionless, wait hanging and take off a strand 5.
Further, described placement unit also includes the suspension hook 45 being connected to above suspension ring 44.I.e. second cross beam 43 with hang Connected by suspension hook 45 between ring 44, be convenient for changing suspension ring 44.
Concrete, described portal frame 1 is character "door" form structure, including two supporting legs 11 and be connected to two described supporting legs 11 it Between back timber, described first crossbeam 41 is connected with described back timber.Supporting leg 11 fixes on the ground, and take is ground space, top Beam is connected between two supporting legs 11;In prior art, multiple portal frames 1 close on setting, and supporting leg 11 and back timber all can be to lifting behaviour Making and terrestrial operation impacts, causing trouble cannot process in time, seriously delays the manufacturing schedule of strand 5.And this practicality is new Type uses single portal frame 1, roller-way 6 has prevented one arrive back timber, has been easy to avoid during lifting, and roller-way 6 side is only One supporting leg 11, the most easily avoids during carrying so that the strand 5 being not switched off can quickly be hung away, and fault handling time is big Big shortening, the impact on strand 5 manufacturing schedule is the least.
As can be seen from the above embodiments, this utility model by using single portal frame 1, weighing device 4 and lifting Mechanism 3 is all connected on this portal frame 1, and weighing device 4 connects has at least two along the distribution of roller-way 6 length direction to capture single Unit, it is achieved to the crawl of strand 5 with weigh;Whole single-beam weighing platform not only floor space is little, on roller-way 6 length direction Being distributed smaller, personnel walk on the ground, haulage equipment etc. is the most more convenient, cut and need for processing strand 5 The impact of the troubleshooting hung away is smaller, facilitates the quick handling failure of operator, and the impact on strand 5 manufacturing schedule is big Big reduction;A plurality of roller-way 6 is arranged at below same portal frame 1, then further reduces the floor space of portal frame 1, improve The production efficiency of strand 5;Either described in embodiment one elevating mechanism 3 is arranged on weighing device 4 and portal frame 1 it Between, or elevating mechanism 3 is arranged between each placement unit and weighing device 4 as described in embodiment two, it is all in profit The further improvement strand 5 on roller-way 6 carried out on the basis of the operation of online weighing is realized with single portal frame 1.
The above is only preferred implementation of the present utility model, it is noted that for the common skill of the art For art personnel, on the premise of without departing from this utility model know-why, it is also possible to make some improvement and replacement, these change Enter and replace and also should be regarded as protection domain of the present utility model.

Claims (12)

1. a single-beam weighing platform, it is characterised in that include that edge is perpendicular to roller-way length direction and is arranged on above roller-way Individual portal frame, described portal frame is provided with weighing device, and described weighing device connects to have grabs at least two capturing strand Taking unit, at least two placement unit is distributed along the length direction of roller-way;The equal liftable of described placement unit.
2. single-beam weighing platform as claimed in claim 1, it is characterised in that described weighing device passes through elevating mechanism with described Portal frame connects.
3. single-beam weighing platform as claimed in claim 2, it is characterised in that described portal frame is across a plurality of roller be arrangeding in parallel Road, on described portal frame, corresponding roller-way is provided with multiple described weighing device, and each described weighing device is respectively connected with at least two Placement unit.
4. single-beam weighing platform as claimed in claim 3, it is characterised in that described weighing device includes: first crossbeam, second Crossbeam and the LOAD CELLS being connected between first crossbeam and second cross beam, second cross beam is positioned at the lower section of first crossbeam, institute Stating placement unit and hang on below second cross beam, first crossbeam is connected with described elevating mechanism.
5. the single-beam weighing platform as described in any one of Claims 1-4, it is characterised in that described placement unit is suspension ring, institute Stating between the adjacent rollers that suspension ring can drop on roller-way, strand is formed directly into described suspension ring through out-of-date.
6. single-beam weighing platform as claimed in claim 5, it is characterised in that described placement unit also includes being connected on suspension ring The suspension hook of side.
7. the single-beam weighing platform as described in any one of claim 2 to 4, it is characterised in that described portal frame is door font knot Structure, including two supporting legs and be connected to the back timber between two described supporting legs, described elevating mechanism is connected with described back timber.
8. a single-beam weighing platform, it is characterised in that include that edge is perpendicular to roller-way length direction and is arranged on above roller-way Individual portal frame, described portal frame is provided with weighing device, and described weighing device connects to have grabs at least two capturing strand Taking unit, at least two placement unit is distributed along the length direction of roller-way;The equal liftable of described placement unit;
Described placement unit is all connected with described weighing device by elevating mechanism.
9. single-beam weighing platform as claimed in claim 8, it is characterised in that described portal frame is across a plurality of roller be arrangeding in parallel Road, on described portal frame, corresponding roller-way is provided with multiple described weighing device, and each described weighing device is respectively connected with at least two Placement unit.
10. single-beam weighing platform as claimed in claim 9, it is characterised in that described weighing device includes: first crossbeam, the Two crossbeams and the LOAD CELLS being connected between first crossbeam and second cross beam, second cross beam is positioned at the lower section of first crossbeam, Described placement unit hangs on below second cross beam, and first crossbeam is connected with described portal frame.
The 11. single-beam weighing platforms as described in any one of claim 8 to 10, it is characterised in that described placement unit is suspension ring, Described suspension ring can drop between the adjacent rollers on roller-way, and strand is formed directly into described suspension ring through out-of-date.
12. single-beam weighing platforms as claimed in claim 10, it is characterised in that described portal frame is character "door" form structure, including Two supporting legs and be connected to the back timber between two described supporting legs, described first crossbeam is connected with described back timber.
CN201620619116.8U 2016-06-21 2016-06-21 A kind of single-beam weighing platform Withdrawn - After Issue CN205772911U (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105923546A (en) * 2016-06-21 2016-09-07 北京中远通科技有限公司 Single-beam weighing platform

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105923546A (en) * 2016-06-21 2016-09-07 北京中远通科技有限公司 Single-beam weighing platform

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