CN109760146A - A kind of gravity tension device - Google Patents
A kind of gravity tension device Download PDFInfo
- Publication number
- CN109760146A CN109760146A CN201910184183.XA CN201910184183A CN109760146A CN 109760146 A CN109760146 A CN 109760146A CN 201910184183 A CN201910184183 A CN 201910184183A CN 109760146 A CN109760146 A CN 109760146A
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- reel
- gravity
- bracing wire
- wheel
- tension device
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- 230000005484 gravity Effects 0.000 title claims abstract description 32
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract 1
- 239000004033 plastic Substances 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 4
- 230000001939 inductive effect Effects 0.000 description 4
- 244000309464 bull Species 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The invention discloses a kind of gravity tension devices, specifically include that rack, are used to support；Variable force arm assembly, it includes supporting element, stepped wheel, and supporting element is fixedly arranged in rack, and stepped wheel is rotatably set on supporting element, ladder guide wheel includes the first reel, the second reel and rotation axis, and the radius of the first reel is 1.5 ~ 10 times of the second reel radius；Flexible force transmission part is used to transmit pulling force；And weight member, it is rotated using self gravity for drawing the stepped wheel.Present invention is mainly used on band sawing machine, tensile force is provided for moveable guide wheel.The mechanism of the different arm of forces is equipped in this gravity tension device, it is input with lesser gravity, biggish tensile force is converted to by said mechanism, the tensile force stability is high, the component of detection tensile force size is equipped in the present apparatus, as needed can accurate tension adjusting size, the lighter in weight of single counterweight, operator can be readily accomplished operation in weight member.
Description
Technical field
A kind of tensioning apparatus the present invention relates to band sawing machine, in particular on a kind of band sawing machine.
Background technique
Both at home and abroad, wood working band sawing machine research and production have developed decades, and achievement is rich.Currently, being based on band saw
Machine is prototype, and similar band sawing machine is developed in many other fields.But common ground is studied towards accurate and compact
Direction is developed, and the required precision processed first is higher and higher, and to equipment, more stringent requirements are proposed for this, and stability will be got well, cutting
Efficiency wants high；Then whole equipment space occupied wants small, and structure is simple.Cutting accuracy is influenced maximum to be exactly turning for belt wheel
Dynamic stability, this needs the tensile force in cutting belt suitable, and tensile force is constant and stablizes.In use, needed in band saw
Clamp force is larger, at least needs tens kilograms even several hundred kilograms of pulling force.In the prior art, disclosed strainer mainly wraps
Hydranlic tensioner, screw take-up or air pressure tensioning apparatus are included, although these devices can provide biggish tensile force,
It is to have respective defect.Hydraulic device can have hydraulic oil leakage, so that the environment of operation is poor, repair cumbersome；
There is pressure release in air pressure, and can generate noise；Both devices will increase optional equipment, and cost is caused to improve and take up an area
Space enlargement is repaired and cumbersome.And the threaded connection of screw take-up is there are gap, pressure can not be stablized, tensioning
Power is difficult to accurately control, and influences cutting accuracy and service life.It needs to research and develop a kind of tensioning apparatus, constant force tensioning can be provided,
Tensile force stability is high, and apparatus structure is simple, and bulk is small.
The information disclosed in the background technology section is intended only to increase the understanding to general background of the invention, without answering
When being considered as recognizing or imply that the information constitutes the prior art already known to those of ordinary skill in the art in any form.
Summary of the invention
The purpose of the present invention is to provide a kind of gravity tension devices, can provide stable tensile force, and structure is simple, behaviour
Facilitate, manufacturing cost is low.
To achieve the above object, the present invention provides a kind of gravity tension devices comprising:
Rack is used to support；
Variable force arm assembly, the variable force arm assembly include supporting element, stepped wheel, and the supporting element is fixedly arranged in rack, the rank
Ladder wheel is rotatably set on supporting element, and the ladder guide wheel includes the first reel, the second reel and rotation axis, and described the
The radius of one reel is 1.5 ~ 10 times of the second reel radius；
Flexible force transmission part is used to transmit pulling force, and the flexible force transmission part includes the first bracing wire and the second bracing wire, and described first draws
One end of line is fixedly arranged on first reel, and the other end of first bracing wire is linked with weight member, second bracing wire
One end be fixedly arranged on second reel, the other end of second bracing wire is set on the tensioning sliding block in the rack；
And
Weight member is rotated using self gravity for drawing the stepped wheel, and the weight member is hung in the first bracing wire.
Preferably, in above-mentioned technical proposal, the rack be equipped with rotatable directive wheel, the directive wheel for changing
The direction of pull of second bracing wire.
Preferably, in above-mentioned technical proposal, the flexible force transmission part is steel wire, plastic cord or cloth material strip.
Preferably, in above-mentioned technical proposal, first reel and second reel are removably sheathed on institute
It states in rotation axis, first reel, second reel and the rotation axis are mutually arranged concentrically.
Preferably, in above-mentioned technical proposal, it is logical that bending is offered on first reel and second reel
Hole.
Preferably, in above-mentioned technical proposal, second bracing wire is equipped with tension sensor, and the tension sensor is used for
Pulling force size is detected, the signal output line of the tension sensor is connected on the input port of the Signal Monitor.
Preferably, in above-mentioned technical proposal, the tension sensor is the resistance strain type sensor of " S " type structure.
The invention has the following beneficial effects:
First, using principle of moment balance, it is equipped with the mechanism of the different arm of forces in this gravity tension device, is defeated with lesser gravity
Enter, biggish tensile force is converted to by said mechanism, for being tensioned band saw, the tensile force in band saw is determined by gravity, can be with
It is set as a constant force tensioning, and stability is high.
Second, the size of tensile force can be monitored in bracing wire, can accurately be adjusted as needed.
Third, the lighter in weight of single counterweight, operator can be readily accomplished operation.
Detailed description of the invention
Fig. 1 is the rearview of gravity tension device according to the present invention.
Fig. 2 is the rearview of gravity tension device according to the present invention.
Fig. 3 is the main view of stepped wheel in gravity tension device according to the present invention.
Fig. 4 is the perspective view of the explosion of stepped wheel in gravity tension device according to the present invention.
Main appended drawing reference explanation:
1- rack, 2- are tensioned sliding block, 3- guide rail, 4- tension sensor, 5- directive wheel, 6- supporting element, 7- stepped wheel, 71- first
Reel, the first line hole of 711-, the second reel of 72-, the second line hole of 721-, 73- rotation axis, 74 buckles, 81- first are drawn
Line, the second bracing wire of 82-, 9- weight member, 10- adapting table, 11- inductive switch, 12- signal adapter, R1- bull wheel radius, R2-
Steamboat radius.
Specific embodiment
With reference to the accompanying drawing, specific embodiments of the present invention will be described in detail, it is to be understood that guarantor of the invention
Shield range is not limited by the specific implementation.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " includes " or its change
Changing such as "comprising" or " including " etc. will be understood to comprise stated element or component, and not exclude other members
Part or other component parts.
As shown in Figures 1 to 4, it is shown that the structural representation of gravity tension device according to the preferred embodiment of the present invention
Figure, which mainly includes rack 1, supporting element 6, stepped wheel 7, the first bracing wire 81, the second bracing wire 82 and weight member 9
Deng, supporting element 6 is fixedly arranged in rack 1, stepped wheel 7 rotatably be set to supporting element 6 on, the first bracing wire 81 and the second bracing wire 82 divide
She Yu not be on stepped wheel 7, weight member 9 is hung in the first bracing wire 81, and specific embodiment is as follows:
Rack 1 is equipped with guide rail 3, and the guide rail 3 is arranged in parallel, and guide rail 3 is equipped with matched guide rail slide block, and tensioning sliding block 2 is solid
Surely it is connected on the guide rail slide block of guide rail 3, tensioning sliding block 2 can move up and down along guide rail 3.
Variable force arm assembly is additionally provided in rack 1, variable force arm assembly includes supporting element 6 and stepped wheel 7, and supporting element 6 utilizes spiral shell
Bolt is fixed in rack 1, and stepped wheel 7 is spindle rotationally arranged on the bearing of supporting element 6, stepped wheel 7 include the first reel 71,
Second reel 72, rotation axis 73 and buckle 74,72 sets of the first reel 71 and the second reel are inserted in rotation axis 73, are utilized
The relative rotation of key connection limitation circumferencial direction, the radius R1 of first reel 71 is 72 radius R2 of the second reel
1.5 ~ 10 times.
Flexible force transmission part is equipped on variable force arm assembly, flexible force transmission part includes the first bracing wire 81 and the second bracing wire 82, the
One end of two bracing wires 82 passes through the first line hole 721 on the second reel 72, enters from periphery, is pierced by, reserves from end face
The end of a thread of certain length is connected to the top of tensioning sliding block 2 for being stuck in buckle 74, the other end of the second bracing wire 82.First draws
One end of line 81 passes through the first line hole 711 on the first reel 71, enters from periphery, is pierced by from end face, reserves certain
The end of a thread of length is for being stuck in buckle 74, and the other end of the first bracing wire 81 is for the company's of extension weight member.
Weight member 9 is multiple individual counterweights, can be connected between each other by hook, and counterweight passes through hook carry
In the first bracing wire 81, due to gravity, when gravity is sufficiently large, the first bracing wire 81 of traction is moved downward, so that stepped wheel 7
Take-up campaign is made in rotation, the second bracing wire 82, and the tensioning sliding block 2 in rack 1 is driven to move up, and achievees the effect that be tensioned band saw.
Weight member 9 is arranged right below adapting table 10, and the top surface of adapting table 10 is equipped with rubber layer, and when band saw is snapped, counterweight can fall suddenly,
Adapting table 10 can work as a buffer.
In a preferred embodiment of the invention, rack 1 is equipped with directive wheel 5, and directive wheel is set to the second bracing wire
82 need to change the vertical direction of the second bracing wire 82 can be made excessively to arrive horizontal direction at nyctitropic intermediate inflection point.Directive wheel 5 wraps
Support shaft and guide wheel are included, the support shaft is fixedly arranged in rack 1, and the guide wheel is rotatably set in the support shaft, guide wheel
Outer circle offers U-typed slot, and the second bracing wire 82 is prevented to be detached from directive wheel 5.
In a preferred embodiment of the invention, first bracing wire 81 and second bracing wire 82 can be used
Finer wire, high-intensitive plastic cord or strap, it has been disclosed that the high-strength plastic stockline tensile strength of sale is up to 600MPa, commonly
Iron wire is 150MPa, and metal plated steel wire 400-480MPa, plastic cord has better flexibility, so plastic cord is more suitable for transmitting
Pulling force.
In a preferred embodiment of the invention, first reel 71 is nested in the shaft 73, and
It is mutually arranged concentrically, second reel 72 is nested in the shaft 73, and is mutually arranged concentrically, the two of rotation axis 73
End opens up screw thread, using nut check, limits the first reel 71 and the second reel 72 moves axially.
In a preferred embodiment of the invention, pulling force is equipped between the second bracing wire 82 and tensioning sliding block 2 and is passed
Sensor 4, the output signal line of tension sensor 4 are connected to the input port on signal adapter 12, signal adapter 12 be with
The matched device for digit-displaying of tension sensor 4, can directly display the pulling force or pressure in tension sensor 4, pulling force after energization
For positive number, pressure is negative.
In a preferred embodiment of the invention, tension sensor 4 is that the pressure of " S " type weighing senses
The tension sensor 4 of device, the model is checked, and measures linearly related parameter with the object of the known weight of standard, then
Setting correct parameter can accurately measure.
In a preferred embodiment of the invention, it is equipped with inductive switch 11 in the obliquely downward of weight member 9, induction is opened
The output signal line of pass 11 is connected on the input port of signal adapter 12, and inductive switch 11 is passed through when weight member 9 falls
Front when, inductive switch 11, which can be triggered, to be generated a signal and feeds back to signal adapter 12, it can be determined that with sawed-off,
It shuts down to control band sawing machine, or issues other control instructions.
In a preferred embodiment of the invention, a specific embodiment analysis is selected, if bull wheel radius R1 is
10 times of steamboat radius R2, for the gravity of weight member 9 as input power, gravity will be amplified 10 times, using as the second bracing wire 82
In tensile force.Because at work, tensioning sliding block 2 is in tensioning state, according to principle of moment balance, the first reel 71
Radius, that is, bull wheel radius R1 is arm of force L1, and radius, that is, steamboat radius R2 of the second reel 72 is arm of force L2, if the gravity of counterweight 9
For M1, according to equalising torque company, you can get it, and the pulling force in the second bracing wire 82 is sized for 10 times of M1.It is equivalent to gravity
The gravity of part 9 amplifies 10 times, is provided as tensile force.In practical operation, worker only needs to gradually add single counterweight, according to
The show value of signal adapter 12 reaches required tensile force.Single counterweight weight can be set between 1Kg-5Kg,
Ordinary people is easy to operation can be completed.
The aforementioned description to specific exemplary embodiment of the invention is in order to illustrate and illustration purpose.These descriptions
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to the above instruction, can much be changed
And variation.The purpose of selecting and describing the exemplary embodiment is that explaining specific principle of the invention and its actually answering
With so that those skilled in the art can be realized and utilize a variety of different exemplary implementation schemes of the invention and
Various chooses and changes.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (7)
1. a kind of gravity tension device characterized by comprising
Rack is used to support；
Variable force arm assembly, the variable force arm assembly include supporting element, stepped wheel, and the supporting element is fixedly arranged in rack, the rank
Ladder wheel is rotatably set on supporting element, and the ladder guide wheel includes the first reel, the second reel and rotation axis, and described the
The radius of one reel is 1.5 ~ 10 times of the second reel radius；
Flexible force transmission part is used to transmit pulling force, and the flexible force transmission part includes the first bracing wire and the second bracing wire, and described first draws
One end of line is fixedly arranged on first reel, and the other end of first bracing wire is linked with weight member, second bracing wire
One end be fixedly arranged on second reel, the other end of second bracing wire is set on the tensioning sliding block in the rack；
And
Weight member is rotated using self gravity for drawing the stepped wheel, and the weight member is hung in the first bracing wire.
2. a kind of gravity tension device according to claim 1, which is characterized in that the rack is equipped with and rotatably leads
To wheel, the directive wheel for changing second bracing wire direction of pull.
3. a kind of gravity tension device according to claim 1, which is characterized in that the flexible force transmission part is steel wire, modeling
Stockline or cloth material strip.
4. a kind of gravity tension device according to claim 1, which is characterized in that first reel and described second
Reel is removably sheathed in the rotation axis, first reel, second reel and the rotation axis phase
Mutually it is arranged concentrically.
5. a kind of gravity tension device according to claim 4, which is characterized in that first reel and described second
Bending through-hole is offered on reel.
6. a kind of gravity tension device according to claim 1, which is characterized in that second bracing wire is passed equipped with pulling force
Sensor, for the tension sensor for detecting pulling force size, the signal output line of the tension sensor is connected to the signal
On the input port of display.
7. a kind of gravity tension device according to claim 6, which is characterized in that the tension sensor is " S " type knot
The resistance strain type sensor of structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910184183.XA CN109760146A (en) | 2019-03-12 | 2019-03-12 | A kind of gravity tension device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910184183.XA CN109760146A (en) | 2019-03-12 | 2019-03-12 | A kind of gravity tension device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109760146A true CN109760146A (en) | 2019-05-17 |
Family
ID=66458244
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910184183.XA Pending CN109760146A (en) | 2019-03-12 | 2019-03-12 | A kind of gravity tension device |
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| Country | Link |
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| CN (1) | CN109760146A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3810409A (en) * | 1971-04-06 | 1974-05-14 | Letson & Burpee Ltd | Bandmill strain mechanism |
| JPS5035783A (en) * | 1973-05-28 | 1975-04-04 | ||
| JPS51108393A (en) * | 1975-03-20 | 1976-09-25 | Keiichiro Ishida | KOCHORYOKUOBINOKOSOCHINIOKERU NOKOHASON BOSHIHO |
| US5176055A (en) * | 1987-03-05 | 1993-01-05 | Seneca Sawmill Company | Bandmill with automatic track and strain control system |
| CA1322933C (en) * | 1987-03-05 | 1993-10-12 | Edward Komori | Bandmill with automatic track and strain control system |
| EP0947274A2 (en) * | 1998-03-06 | 1999-10-06 | Forestry And Forest Products Research Institute | Bandsaw having a blade tensioning device and a vibration absorber |
| CN101768969A (en) * | 2010-01-19 | 2010-07-07 | 上海工程机械厂有限公司 | Upright post type pile driving frame with post-tensioning device |
| CN202828760U (en) * | 2012-09-14 | 2013-03-27 | 江苏通达机械设备制造有限公司 | Vehicle-type gravity tensioning device |
| CN104309996A (en) * | 2014-10-17 | 2015-01-28 | 金川集团股份有限公司 | Tensioning device of suspension bridge type belt conveyer |
| CN206665537U (en) * | 2017-03-31 | 2017-11-24 | 兖州煤业股份有限公司 | A kind of tensioning apparatus and the ribbon conveyer with the tensioning apparatus |
| CN207432373U (en) * | 2017-10-31 | 2018-06-01 | 深圳市美华居实业有限公司 | A kind of tensioning apparatus of wood working band sawing machine |
| CN108927854A (en) * | 2018-09-11 | 2018-12-04 | 张荣华 | A kind of log multi-disc band sawing machine being tensioned in real time |
| CN210161327U (en) * | 2019-03-12 | 2020-03-20 | 桂林航天工业学院 | Gravity tensioning device |
-
2019
- 2019-03-12 CN CN201910184183.XA patent/CN109760146A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3810409A (en) * | 1971-04-06 | 1974-05-14 | Letson & Burpee Ltd | Bandmill strain mechanism |
| JPS5035783A (en) * | 1973-05-28 | 1975-04-04 | ||
| JPS51108393A (en) * | 1975-03-20 | 1976-09-25 | Keiichiro Ishida | KOCHORYOKUOBINOKOSOCHINIOKERU NOKOHASON BOSHIHO |
| US5176055A (en) * | 1987-03-05 | 1993-01-05 | Seneca Sawmill Company | Bandmill with automatic track and strain control system |
| CA1322933C (en) * | 1987-03-05 | 1993-10-12 | Edward Komori | Bandmill with automatic track and strain control system |
| EP0947274A2 (en) * | 1998-03-06 | 1999-10-06 | Forestry And Forest Products Research Institute | Bandsaw having a blade tensioning device and a vibration absorber |
| CN101768969A (en) * | 2010-01-19 | 2010-07-07 | 上海工程机械厂有限公司 | Upright post type pile driving frame with post-tensioning device |
| CN202828760U (en) * | 2012-09-14 | 2013-03-27 | 江苏通达机械设备制造有限公司 | Vehicle-type gravity tensioning device |
| CN104309996A (en) * | 2014-10-17 | 2015-01-28 | 金川集团股份有限公司 | Tensioning device of suspension bridge type belt conveyer |
| CN206665537U (en) * | 2017-03-31 | 2017-11-24 | 兖州煤业股份有限公司 | A kind of tensioning apparatus and the ribbon conveyer with the tensioning apparatus |
| CN207432373U (en) * | 2017-10-31 | 2018-06-01 | 深圳市美华居实业有限公司 | A kind of tensioning apparatus of wood working band sawing machine |
| CN108927854A (en) * | 2018-09-11 | 2018-12-04 | 张荣华 | A kind of log multi-disc band sawing machine being tensioned in real time |
| CN210161327U (en) * | 2019-03-12 | 2020-03-20 | 桂林航天工业学院 | Gravity tensioning device |
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