CN200979452Y

CN200979452Y - A blade bracing structure and a spiral scale with such structure

Info

Publication number: CN200979452Y
Application number: CN 200620158587
Authority: CN
Inventors: 孙凯
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-11-28
Filing date: 2006-11-28
Publication date: 2007-11-21
Anticipated expiration: 2016-11-28

Abstract

The utility model relates to a knife edge bearing structure and a spiral scale which has this structure, wherein, the knife edge bearing structure has a holder, a supporting unit which is mounted on the holder and a supported unit which is arranged on a supported object. The supporting unit and the supported unit are connected by flexible material in rope form. The spiral scale has at least one spiral delivery mechanism, wherein, one end of the spiral delivery mechanism is connected with a load cell and the other end is arranged with the knife edge bearing structure. The number of the utility model components is greatly reduced. The device structure is simplified. The producing cost is reduced. The deficit of load fluctuation of supported unit because of mismachining tolerance is overcome which can not be overcome in well-know technology, thereby greatly improving integral accuracy of devices using the knife edge bearing structure. The spiral scale of the utility model improves weighing accuracy as employing the knife edge bearing structure.

Description

Edge of a knife supporting construction and helix balance with this structure

Technical field

The utility model relates to a kind of edge of a knife supporting construction, especially a kind of edge of a knife supporting construction that adopts flexible ropy to constitute between support component and supported parts, and the helix balance with this edge of a knife supporting construction.

Background technology

In commercial production, scientific research, need carry out effective support to object usually, for example in processes such as weighing, accurate for guaranteeing weighing, the support that weighed object can be stabilized makes all upper and lower activities of energy of its two ends again, reaches dynamic equilibrium state.

Known edge of a knife structure normally is made of one group of cross-spring sheet, and the edge of a knife fulcrum structure with helix balance is the example explanation below.

Helix balance be applied to usually with granular material by given pace continuous from the operation that feed bin is sent, as shown in Figure 1, 2, 3, helix balance 1 mainly has: top spiral conveying mechanism 11, bottom spiral conveying mechanism 12, one end of top spiral conveying mechanism 11 is provided with charging aperture 13, the other end is provided with first discharging opening 14, described first discharging opening 14 is corresponding with the feeding mouth 15 on being arranged on bottom spiral conveying mechanism 12, and the other end of described bottom spiral conveying mechanism 12 is provided with second discharging opening 17.And an end of described bottom spiral conveying mechanism 12 is connected with load sensor 18, the other end is established has a known edge of a knife fulcrum 16, also this edge of a knife fulcrum 16 can be called fulcrum, prop up bottom spiral conveying mechanism 12 by this edge of a knife, and can guarantee simultaneously that the front portion of bottom spiral conveying mechanism 12 and rear portion can upper and lower activities.If when at this moment the inventory in the bottom spiral conveying mechanism 12 changed, the load sensor 18 of its front end can be measured the variation of weight, and send corresponding signal, this signal is transformed to mass flow by corresponding instrument again.What of institute's convey materials common described top spiral conveying mechanism 11 adjustable speeds control by changing its rotating speed.

Above-mentioned known edge of a knife fulcrum 16 is to be made of one group of cross-spring sheet, mainly comprise: a bearing 161, first web member 162 is installed on it, the mutually orthogonal elastic supporting member for supporting optical member of making by spring steel plate 164,165 that is equipped with on first web member 162, described elastic supporting member for supporting optical member 164 is connected with second web member 166 respectively with 165, and described second web member 166 is connected with described bottom spiral conveying mechanism 12.Above-mentioned edge of a knife fulcrum 16 is 2 covers altogether, are installed in the both sides of bottom spiral conveying mechanism 12 respectively, thereby have hung bottom spiral conveying mechanism 12.

With 12 pull-ups of bottom spiral conveying mechanism and bear the part weight of this bottom spiral conveying mechanism 12, guarantee the displacement that bottom spiral conveying mechanisms 12 can not produce along horizontal axis by vertically disposed elastic supporting member for supporting optical member 164 by horizontally disposed elastic supporting member for supporting optical member 165.By means of two that are separately positioned on bottom spiral conveying mechanism 12 both sides vertical elastic supporting member for supporting optical member 164 and two horizontal resiliency support members 165, thereby with bottom spiral conveying mechanism 12 resiliency supported, guarantee 16 effects of playing a fulcrum of this edge of a knife fulcrum, load sensor 18 has not been applied extra power.

But because, above-mentioned two groups of elastic supporting member for supporting optical member 164,165 that are made of spring leaf can not reach theoretic precision, at production with in using, anyway adjust the position and the angle of described elastic supporting member for supporting optical member 164,165, all can't reach theoretic precision.It is absolute smooth and guarantee that the line between the point of crossing of 4 elastic supporting member for supporting optical member of spiral conveying mechanism 12 both sides, bottom must pass the center of 4 latch plates that constitute this elastic supporting member for supporting optical member simultaneously that the elastic supporting member for supporting optical member 164,165 that promptly requires is in theory wanted, this is difficult to accomplish in actual production, just will produces bigger deviation after maintenance of equipment.Particularly when the position of the load sensor 18 that is arranged on its front end changes, will drive elastic supporting member for supporting optical member 164,165 by bottom spiral conveying mechanism 12 and produce elastic deformation, then the center of the latch plate of the line between the point of crossing of this elastic supporting member for supporting optical member 164,165 and this elastic supporting member for supporting optical member will produce the skew greater than the installation site, promptly this elastic supporting member for supporting optical member can produce and be commonly called as " other strength ", thereby this deformation force is applied on the bottom spiral conveying mechanism 12, cause the loading of testee to change, influence measuring accuracy.And the number of components of this known edge of a knife fulcrum 16 is many (mainly to be comprised: 2 of elastic supporting member for supporting optical member, fixedly first and second web member of elastic supporting member for supporting optical member is 2,8 on the screw that elastic supporting member for supporting optical member and web member are fixed, 4 (not shown)s of screw of fixing above-mentioned first and second web member; Amount to 16), processing, assembling complexity, calibration expense height easily produces bigger error.

The design people is according to the research and development of for many years edge of a knife being supported, proposed to overcome defective in the prior art, can play the good supporting effect to supported parts, and the edge of a knife supporting construction that can not cause its loading to change, and the helix balance with this edge of a knife supporting construction.

Summary of the invention

The technical problems to be solved in the utility model is: a kind of edge of a knife supporting construction is provided, especially a kind ofly between support component and supported parts, adopt that flexible ropy is connected, as can not cause supported parts loading variation edge of a knife supporting construction, and the helix balance with this edge of a knife supporting construction.

For this reason, a kind of edge of a knife supporting construction that the utility model proposes, wherein, described edge of a knife supporting construction has a bearing, be arranged on the support component on the bearing, and be arranged on the supported parts on the supported object, be connected by flexible ropy between described support component and the supported parts.

Aforesaid edge of a knife supporting construction, wherein, described support component is positioned at supported upper parts of components, and support component and supported parts are column.

Aforesaid edge of a knife supporting construction, wherein, described flexible ropy be intertwined and connected described support component and supported parts.

Aforesaid edge of a knife supporting construction, wherein, described flexible ropy is wrapped on described support component and the supported parts with 8 fonts, and the two ends of flexible ropy are separately fixed on the described support component.

Aforesaid edge of a knife supporting construction, wherein, described flexible ropy is a wire rope.

Aforesaid edge of a knife supporting construction, wherein, described support component and supported parts are cylindrical parts, and its axial both sides are respectively equipped with rib.

A kind of helix balance with aforesaid edge of a knife supporting construction, described helix balance has at least one spiral conveying mechanism, and wherein, an end of described spiral conveying mechanism is connected with load sensor, and the other end is provided with described edge of a knife supporting construction.

Aforesaid helix balance, wherein, described edge of a knife supporting construction has a supporting seat, this supporting seat is separately positioned on the both sides of described spiral conveying mechanism, described edge of a knife supporting seat is provided with support component, the both sides of described spiral conveying mechanism are respectively equipped with supported parts, a flexible ropy be intertwined and connected described support component and supported parts.

Aforesaid helix balance, wherein, described edge of a knife supporting construction is arranged on the charging aperture bottom of described spiral conveying mechanism, and the center line of edge of a knife supporting construction is corresponding with the center line of charging aperture.

Aforesaid helix balance, wherein, described helix balance has the top spiral conveying mechanism, the bottom spiral conveying mechanism, one end of top spiral conveying mechanism is provided with first charging aperture, the other end is provided with first discharging opening, and described first discharging opening is corresponding with second charging aperture on being arranged on the bottom spiral conveying mechanism, and the other end of described bottom spiral conveying mechanism is provided with second discharging opening; One end of described bottom spiral conveying mechanism is connected with load sensor, and the other end is provided with described edge of a knife supporting construction; Described edge of a knife supporting construction has a supporting seat, this supporting seat is separately positioned on the both sides of described bottom spiral conveying mechanism, described edge of a knife supporting seat is provided with support component, the both sides of described bottom spiral conveying mechanism are respectively equipped with supported parts, a flexible ropy be intertwined and connected described support component and supported parts; Described edge of a knife supporting construction is arranged on the second charging aperture bottom of described bottom spiral conveying mechanism, and the center line of edge of a knife supporting construction is corresponding with the center line of second charging aperture.

The characteristics and the advantage of edge of a knife supporting construction of the present utility model are:

Edge of a knife supporting construction of the present utility model is compared with known technology, be reduced to 5 parts by 16 original parts, therefore number of components significantly reduces, simplified the structure of device, reduced manufacturing cost, overcome the defective that causes supported parts loading to change owing to the mismachining tolerance that can't overcome in the known technology simultaneously, thereby significantly improved the overall precision of the device that uses this edge of a knife supporting construction.

Helix balance of the present utility model, owing to adopted above-mentioned edge of a knife supporting construction, described edge of a knife supporting construction is under the action of gravity of the bottom of helix balance spiral conveying mechanism, flexible ropy is " X " type, the flexible ropy at this place is two triangles that drift angle is relative, so can guarantee the bottom spiral conveying mechanism does not in axial direction move, and this leg-of-mutton " fulcrum " can not produce extra torsion and loading to whole scale body, not only play effective supporting but also can not produce extra torsion (" the other strength " that is commonly called as) effect thereby can be good at reaching, therefore improved the accuracy of weighing sensor.

Description of drawings

Fig. 1 is a kind of structural representation of known edge of a knife fulcrum;

Fig. 2 is the structural representation that known edge of a knife fulcrum is applied to helix balance;

Fig. 3 is the schematic side view of Fig. 2 middle and lower part spiral conveying mechanism;

Fig. 4 is an edge of a knife supporting construction synoptic diagram of the present utility model;

Fig. 5 is the helix balance structural representation with described edge of a knife supporting construction of the present utility model;

Fig. 6 is the schematic side view of Fig. 5 middle and lower part spiral conveying mechanism.

Embodiment

Now contrast accompanying drawing and describe embodiment of the present utility model in detail, make technique effect of the present utility model, technical characterictic and technical matters to be solved more apparent.

Shown in Fig. 4,6, the edge of a knife supporting construction 24 that the utility model proposes has bearing 241, be arranged on the support component 242 on the bearing 241, be arranged on the supported parts 243 on the supported object, be connected by flexible ropy 240 between described support component 242 and the supported parts 243.Described flexible ropy 240 can be a wire rope, also can be by having certain intensity and flexible other material known constitutes.

Described support component 242 is positioned at the top of supported parts 243, presents down vertical installment state, and support component 242 and supported parts 243 are column, is best with the cylindrical parts, adopts cylindrical parts conveniently to process, and reduces production costs.The two ends of described flexible ropy 240 are separately fixed on described support component 242 and the supported parts 243, for example, one end of flexible ropy 240 can be fixed on the described support component 242, being 8 fonts then is wrapped on described support component 242 and the supported parts 243, at last its other end is fixed on the described support component 242, so described support component 242 and supported parts 243 are connected.This flexibility ropy 240 can twine a circle or a multi-turn according to required load capacity.

For preventing that flexible ropy 240 from coming off, be respectively equipped with the rib 244 that erects in the axial both sides of described support component 242 and supported parts 243.

Adopt edge of a knife supporting construction 24 of the present utility model, compare with known technology, amount of parts significantly reduces, reducing to 5 by 16 of known technology (mainly comprises: 1 of flexible ropy, 2 of support component and supported parts, 2 (not shown)s of the screw of fixed support part and supported parts), simplified the structure of device, overcome the defective that causes supported parts loading to change by the mismachining tolerance that can't overcome in the known technology simultaneously, thereby significantly improved the overall precision of the device that uses this edge of a knife supporting construction.

Please cooperate referring to Fig. 5, be a kind of helix balance 2 that adopts edge of a knife supporting construction of the present utility model, it has top spiral conveying mechanism 22, bottom spiral conveying mechanism 21, one end of top spiral conveying mechanism 22 is provided with first charging aperture 221, the other end is provided with first discharging opening 222, and described first discharging opening 222 is corresponding with second charging aperture 211 on being arranged on bottom spiral conveying mechanism 21, and the other end of described bottom spiral conveying mechanism 21 is provided with second discharging opening 212.Wherein, one end of described bottom spiral conveying mechanism 21 is connected with load sensor 23, the other end is provided with described edge of a knife supporting construction 24, for playing stable support to helix balance, is respectively equipped with an edge of a knife supporting construction 24 in the both sides of bottom spiral conveying mechanism 21.The both sides of described bottom spiral conveying mechanism 21 are respectively equipped with supported parts 243, by flexible ropy 240 be intertwined and connected described support component 242 and supported parts 243.

Be to reduce the influence of material, described edge of a knife supporting construction 24 is arranged on second charging aperture, 211 bottoms of bottom spiral conveying mechanism 21, and the center line of edge of a knife supporting construction 24 is corresponding with the center line of charging aperture, promptly is positioned at same plane weighing.

Under the action of gravity of bottom spiral conveying mechanism 21, flexible ropy 240 is " X " type as shown in Fig. 4,5, the flexible ropy at this place is two triangles that drift angle is relative, so can guarantee bottom spiral conveying mechanism 21 does not in axial direction move, and this leg-of-mutton " fulcrum " can not produce extra torsion and loading to whole scale body, can not produce the effect of extra torsion again thereby can reach existing supporting role, so improve the accuracy of weighing sensor 23.

The comparison of the margin of error that is in use produced with one group of embodiment data declaration helix balance that adopts edge of a knife supporting construction of the present utility model and the helix balance that adopts known edge of a knife fulcrum:

Described helix balance body 2 is diameter 300mm, and distance is 1600mm between the charging and discharging mouth, and the inventory that can fill in the helix balance body is 35 kilograms; This weight is promptly as 100%.In helix balance body 2, during no material, measure its " tare weight " (being zero point); Then with the sensor 23 of front end up and down, left and right four direction each move 50mm, record " zero point " variable quantity average out to of the helix balance that adopts known edge of a knife fulcrum: above-below direction ± 6.6%, left and right directions ± 4.7%.

The helix balance that adopts the fulcrum (can be described as the edge of a knife again) 24 that flexible ropy 240 (wire rope) forms is done same test, and the distance that moves on the front end sensors 23 upper and lower, left and right directions is reached 200mm, cause the variable quantity at " zero point " to be to helix balance of the present utility model: above-below direction ± 0.13%, left and right directions are ± 0.18%.This is because when the position of the sensor 23 of front end changes, make the bottom spiral conveying mechanism 21 that constitutes helix balance 2 parts also produce corresponding change in location, at this moment, the flexible ropy 240 that is wrapped on support component 242 and the supported parts 243 can produce corresponding the slip on support component 242 and supported parts 243, and reach a new equilibrium point, but " X " type triangle of its formation does not change, can as known configurations, not produce what is called " other strength ", therefore, can not apply external force to bottom spiral conveying mechanism 21 yet, thus the accuracy that improved weighing greatly.

The edge of a knife supporting construction that the utility model proposes, be not limited to be applied in the helix balance as shown in Figure 5, it is equally applicable to have in the helix balance of one or more spiral conveying mechanisms, need also to can be applicable to single-point to support simultaneously and reaches in any structure of edge of a knife effect.

Herein, be the place ahead with direction shown in the arrow in scheming.

The above person of thought, it only is specific embodiment of the utility model, when can not limiting scope of the invention process with this, i.e. equivalent variations and the modification of being done according to the utility model content of the patent generally all should still belong in the scope that the utility model claims contain.

Claims

1, a kind of edge of a knife supporting construction, it is characterized in that: described edge of a knife supporting construction has a bearing, be arranged on the support component on the bearing, and be arranged on the supported parts on the supported object, be connected by flexible ropy between described support component and the supported parts.

2, edge of a knife supporting construction as claimed in claim 1, it is characterized in that: described support component is positioned at supported upper parts of components, and support component and supported parts are column.

3, edge of a knife supporting construction as claimed in claim 1 or 2 is characterized in that: described flexible ropy be intertwined and connected described support component and supported parts.

4, edge of a knife supporting construction as claimed in claim 3 is characterized in that: described flexible ropy is wrapped on described support component and the supported parts with 8 fonts, and the two ends of flexible ropy are separately fixed on the described support component.

5, edge of a knife supporting construction as claimed in claim 3 is characterized in that: described flexible ropy is a wire rope.

6, edge of a knife supporting construction as claimed in claim 2 is characterized in that: described support component and supported parts are cylindrical parts, and its axial both sides are respectively equipped with rib.

7, a kind of helix balance with edge of a knife supporting construction as claimed in claim 1, described helix balance has at least one spiral conveying mechanism, it is characterized in that: an end of described spiral conveying mechanism is connected with load sensor, and the other end is provided with described edge of a knife supporting construction.

8, helix balance as claimed in claim 7, it is characterized in that: described edge of a knife supporting construction has a supporting seat, this supporting seat is separately positioned on the both sides of described spiral conveying mechanism, described edge of a knife supporting seat is provided with support component, the both sides of described spiral conveying mechanism are respectively equipped with supported parts, a flexible ropy be intertwined and connected described support component and supported parts.

9, as claim 7 or 8 described helix balances, it is characterized in that: described edge of a knife supporting construction is arranged on the charging aperture bottom of described spiral conveying mechanism, and the center line of edge of a knife supporting construction is corresponding with the center line of charging aperture.

10, as claim 7 or 8 described helix balances, it is characterized in that: described helix balance has the top spiral conveying mechanism, the bottom spiral conveying mechanism, one end of top spiral conveying mechanism is provided with first charging aperture, the other end is provided with first discharging opening, described first discharging opening is corresponding with second charging aperture on being arranged on the bottom spiral conveying mechanism, and the other end of described bottom spiral conveying mechanism is provided with second discharging opening; One end of described bottom spiral conveying mechanism is connected with load sensor, and the other end is provided with described edge of a knife supporting construction; Described edge of a knife supporting construction has a supporting seat, this supporting seat is separately positioned on the both sides of described bottom spiral conveying mechanism, described edge of a knife supporting seat is provided with support component, the both sides of described bottom spiral conveying mechanism are respectively equipped with supported parts, a flexible ropy be intertwined and connected described support component and supported parts; Described edge of a knife supporting construction is arranged on the second charging aperture bottom of described bottom spiral conveying mechanism, and the center line of edge of a knife supporting construction is corresponding with the center line of second charging aperture.