CN87207385U - Spring suspender with constant force - Google Patents
Spring suspender with constant force Download PDFInfo
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- CN87207385U CN87207385U CN 87207385 CN87207385U CN87207385U CN 87207385 U CN87207385 U CN 87207385U CN 87207385 CN87207385 CN 87207385 CN 87207385 U CN87207385 U CN 87207385U CN 87207385 U CN87207385 U CN 87207385U
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- load
- frame
- constant force
- revoliving arm
- main shaft
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Abstract
The utility model discloses a spring suspender with the constant force which belongs to the suspension device, comprising a fixing frame, a load connecting part, a rotating frame, a spring, and a load adjusting mechanism. The load adjusting mechanism comprises a load adjusting bolt, a load adjusting nut, and a guide slot which is positioned on the rotating frame and whose shaft line is not passing the shaft center of the main shaft. When adjusting the load, the length and the direction of the rotating arm can be simultaneously changed by adjusting the load adjusting bolt. The spring suspender with the constant force has the advantages of large load adjusting range and small load deviation, and can reduce the manufacturing cost.
Description
The utility model relates to a kind of improved constant force spring hanging frame, and is particularly relevant with load adjusting mechanism in the constant force spring hanging frame.
As the power station, be used for the constant force spring hanging frame of swing pipe road or high-temperature component in nuclear power station and the chemical plant and should have the as far as possible little load degree of deviation and most economical characteristics such as manufacturing cost.
After finishing as the spring manufacturing of constant force spring hanging frame critical piece, its rigidity error partly constitutes by two, and some is a systematic error, and another partly is an accidental error.Systematic error can compensate by the load adjusting mechanism.The load degree of deviation of constant force spring hanging frame also has two partly to constitute, some is the theory load degree of deviation by the equilibrium principle of constant force spring hanging frame, version decision, another partly is the accidental error that comprises spring rate, the error that is caused by factors such as manufacturing, frictions.The theoretical maximum load degree of deviation of constant force spring hanging frame defines with following formula:
The theoretical maximum load degree of deviation=(| assumed (specified) load-setting load |)/(setting load)
In the following formula, the value of the theoretical maximum load degree of deviation in whole load setting range and in the displacement range, obtaining.
Constant force spring hanging frame in the past is shown among Fig. 1 to Fig. 3, and slewing frame 4 is installed in the fixed frame 6 by main shaft 11, and the case 13 of built-in spring 10 and the guide 14 that is positioned on the spring axis direction are fixed on the fixed frame 6.Roller 8 places on the guide 14.The load adjusting mechanism is adjusted bolt 3 by the load that is arranged on the slewing frame 4, be arranged in the gathering sill 19 on the slewing frame 4 and place gathering sill 19 and be combined on load and adjust load on the bolt 3 and adjust nut 20 and constitute, the center line 17 of gathering sill is by spindle axis 18.One end of arm-tie 7 connects with the axle 21 that is arranged in roller 8, the axle 22 that the other end is adjusted on the nut 20 by load in the load adjusting mechanism can connect with slewing frame 4 rotationally, one end of stay-bolt 9 is fixed on the roller shaft 21, the other end is fixed on the end and the pressing plate 27 in order to compression spring 10 that is positioned at spring 10, is propped up the load of hanging and hangs on slewing frame 4 by degree of tightness nut 15, load bolt 16,1 on load bearing.Part 5 is for propping up the hanger that hangs fixed frame 6, and part 25 is for inserting fixed pins to stop slewing frame to rotate in each hole 24 on slewing frame 4 and the fixed frame 6, and part 26 is the lifting hanger of case 13.Part 2 is a displacement indicator.
Constant force spring hanging frame in the past is when using usually, the load of hanging of propping up acts on 4 one load moments of slewing frame by degree of tightness nut 15, load bolt 16, load bearing 1, the spring 10 that is compressive state is adjusted nut 20 by pressing plate 27, stay-bolt 9, arm-tie 7, load, and to act on 4 one directions of slewing frame opposite with load moment, the moment of balance with it in whole displacement range, thus reach the purpose that the constant force twelve Earthly Branches hang load.
In the ordinary course of things, constant force spring hanging frame all need be adjusted to setting load and just can dispatch from the factory, and correspondingly also needs simultaneously to be adjusted to the spring torque of setting with the spring torque of load moment balance.But, because the existence of spring rate systematic error causes actual rigidity to be greater than or less than when setting rigidity, at this moment just need by the load adjusting mechanism make revoliving arm towards less than or greater than the direction adjustment of setting revoliving arm length, with the systematic error of counterbalance spring rigidity, until the spring torque that reaches setting.
In installation or use, since the pipeline that hangs of propping up etc. exist weight error, actual weight often is greater than or less than the load of setting, in order after installing, successfully pin 25 to be extracted from hole 24 so that constant force spring hanging frame normally plays a role, need to change the length of revoliving arm by the load adjusting mechanism, make spring torque towards the direction that is greater than or less than setting spring moment regulate until with the load moment balance of reality till.
Therefore, Shi Ji revoliving arm adjustment amount is above-mentioned two part adjustment amount sums.In the time will increasing revoliving arm length, adjust bolt 3 and make load adjust nut 20 to rise by regulating load, and will set revoliving arm length 29 and promptly change to length 30 and promptly put 31 to the distance of putting between 18 from position, axle center 28 to the distance between the spindle axis 18 of axle 22 along gathering sill 19.Otherwise, when need reduce revoliving arm length, then make load adjust bolt and get final product by the reverse direction adjusting.
In above-mentioned adjustment process, because the center line of gathering sill 19 is by spindle axis 18, setting nut 20 then is to move along groove 19, and the revoliving arm axis overlaps with gathering sill center line 17, therefore, only be to have changed the length of revoliving arm and the direction that do not change the revoliving arm axis by regulating.
At present, the load degree of deviation of constant force spring hanging frame refers generally to be designated as and is less than or equal to 6% in the world, and the load setting range that offers the user is to set load ± 10%, and resemble above-mentioned in the past constant force spring hanging frame, when its load adjustment amount is setting load ± 10%, promptly do not consider the systematic error of spring rate is compensated, at this moment its theoretical maximum load degree of deviation is 2%, when increasing the load regulated quantity, the theoretical maximum load degree of deviation must improve, because the theoretical maximum load degree of deviation is big, this just requires to be limited in the very little scope by the load degree of deviation that factors such as friction cause, so manufacturing cost just improves, also limited simultaneously the reduction of the overall load degree of deviation of constant force spring hanging frame value, in addition, since little to the compensation range of spring rate systematic error, correspondingly just require spring to improve manufacturing accuracy and manufacturing cost.
The purpose of this utility model just is to propose a kind of shortcoming that overcomes above-mentioned constant force spring hanging frame, promptly by reducing the overall load degree of deviation that the theoretical maximum load degree of deviation reduces constant force spring hanging frame, the load range of adjustment is increased, and the constant force spring hanging frame that manufacturing cost is reduced.
Formation of the present utility model, a kind of constant force spring hanging frame is mainly by fixed frame, be arranged on the main shaft, the slewing frame that rotates around main shaft with respect to fixed frame, be used for making the spring of slewing frame around the main shaft start, be used for making slewing frame around the load connector of main shaft start and be arranged on the slewing frame, the spring torque that acts on the slewing frame by change changes a load adjusting mechanism that hangs a load formation, of the present utility model being characterised in that: described load adjusting mechanism is a kind of when adjusting load, the length of revoliving arm can not only be changed, and the load adjusting mechanism of the direction of revoliving arm axis can be changed simultaneously.Described load adjusting mechanism is by being arranged at gathering sill, the load adjustment bolt on the slewing frame and being arranged in the gathering sill, being combined on load adjusts on the bolt, and can adjust the nut formation along the load that groove moves, the gathering sill center line is 5 °-20 ° with the angle of the revoliving arm axis that is positioned at desired location (the residing position of revoliving arm axis when promptly not carrying out the load adjustment), its direction is for being starting point with the revoliving arm axis that is positioned at desired location, towards and the slewing frame equidirectional deflection of rotating around main shaft.
Effect of the present utility model, in foundation constant force spring hanging frame of the invention process, when except the center line of gathering sill and the angle between the revoliving arm axis at desired location are not determined, after all the other comprise that all parameters of load regulation all are determined, then the theoretical maximum load degree of deviation of constant force spring hanging frame is the function of above-mentioned angle, get different angles, just can obtain the different theoretical maximum load degrees of deviation.When this angle is got a non-vanishing angle, that is: when the center line that makes gathering sill is by spindle axis, adjust bolt by regulating load, just can be implemented in when changing revoliving arm length, change the direction (direction of alleged revoliving arm axis promptly is meant the revoliving arm axis and passes through the angle of the perpendicular line of spindle axis) of revoliving arm axis herein.Especially working as the gathering sill center line is 5 °～20 ° with the angle that is positioned at the revoliving arm axis of desired location, its direction is for being initial point with the revoliving arm axis that is positioned at desired location, towards with slewing frame when the equidirectional deflection that main shaft rotates, then in certain load setting range, can reduce the theoretical maximum load degree of deviation of constant force spring hanging frame significantly.
Description of drawings:
The front view of the constant force spring hanging frame in the past that Fig. 1 represents with section for part.
Fig. 2 is the left view of constant force spring hanging frame shown in Figure 1.
Fig. 3 is the detail drawing of load adjusting mechanism in the constant force spring hanging frame shown in Figure 1.
Fig. 4 is the front view of the constant force spring hanging frame of implementing according to the utility model partly represented with section.
Fig. 5 is in the constant force spring hanging frame shown in Figure 4, the detail drawing of load adjusting mechanism.
Embodiment: the constant force spring hanging frame of foundation the utility model being implemented below in conjunction with accompanying drawing gives further instruction.
The constant force spring hanging frame of implementing according to the utility model is shown among Fig. 4, Fig. 5, among the figure, then use with identical in the past label with the parts that constant force spring hanging frame was identical in the past and to represent, and for constant force spring hanging frame was identical in the past the part that belongs to known technology repeated description no longer then.
As shown in Figure 5, residing position when not carrying out the load adjustment, axle center of the axle 22 on the nut 20 is adjusted for being fixed in load in position 28, point 31 is residing position after having carried out the load adjustment, axle center of axle 22, straight line 34 is the perpendicular line by spindle axis 18, and straight line 35 is the axis that does not carry out load revoliving arm when adjusting by position 28 and spindle axis 18.The load adjusting mechanism is adjusted bolt 3 by the load that is arranged on the slewing frame 4, and gathering sill 38 is arranged in the gathering sill 38 and is combined on load and adjusts load on the bolt 3 and adjust nut 20 and constitute.Gathering sill center line 17 is 13 °～15 ° with the optimum angle 37 of axis 35, its direction is for being starting point with axis 35, court and slewing frame 4 are around equidirectional (the being direction as shown in arrow 39) deflection of main shaft 11 rotations, and arm-tie 7 is connected on the axle 22 that is fixed on the load adjustment nut 20 rotationally.Spring in constant force spring hanging frame, exist a systematic error maybe to be greater than or less than when setting load in its rigidity of having made rear spring when hanging real load on constant force spring hanging frame, just can adjust these problems that solves by the load adjusting mechanism, the rigidity of supposing spring exists a negative deviation or real load when setting load (promptly predesignate hang load), then adjust bolt 3 by adjusting load, make load adjust nut 20 and 28 move to position 31 from the position along gathering sill 38, at this moment the preseting length 29(of revoliving arm is that position 28 is to the distance between the spindle axis 18) to change to length 30(be that position 31 is to the distance between the spindle axis 18), the direction of revoliving arm axis is changed into: the angle 33 that changes to revoliving arm axis 36 and perpendicular line 34 from the angle 32 of revoliving arm axis 35 and perpendicular line 34; Otherwise, when spring rate exists an overgauge or real load less than setting load, then can make load adjust bolt 3 and adjust in the opposite direction, till load moment and spring torque balance.
According to the constant force spring hanging frame that the above embodiments are implemented, its effect is very significant, when the load adjustment amount for set load ± 20% the time, its theoretical maximum load degree of deviation is 0.8%. Compare with constant force spring hanging frame in the past according to the constant force spring hanging frame that the utility model is implemented, at first, when having improved the load adjustment amount, reduced the theoretical maximum load degree of deviation; Secondly, owing to improved the load adjustment amount, therefore also correspondingly improved the scope to the spring rate systematic error compensation, the accuracy of manufacture that can greatly reduce thus spring requires and manufacturing cost; At last, owing to reducing of the theoretical maximum load degree of deviation, this has just created a fabulous condition for the constant force spring hanging frame of making the little economical rationality of a kind of population deviation degree.
Claims (2)
1, a kind of constant force spring hanging frame that belongs to a device for hoisting, comprise fixed frame, be arranged on the main shaft, the slewing frame that rotates around main shaft with respect to fixed frame, be used for making the spring of slewing frame around the main shaft start, be used for making slewing frame around the load connector of main shaft start and be arranged on the slewing frame, acting on spring torque on the slewing frame by change changes and hangs the load adjusting mechanism of load, described load adjusting mechanism is by the gathering sill that is arranged on the slewing frame, load is adjusted bolt and is arranged in the gathering sill, being combined on load adjusts on the bolt, and can adjust the nut formation along the load that groove moves, of the present utility model being characterised in that: the gathering sill center line is 5 °～20 ° with the angle of the revoliving arm axis that is positioned at desired location (the residing position of revoliving arm axis when promptly not carrying out the load adjustment), its direction is for being starting point with the revoliving arm axis that is positioned at desired location, towards and the slewing frame equidirectional deflection of rotating around main shaft.
2, according to the described constant force spring hanging frame of claim 1, it is characterized in that: the gathering sill center line is 13 °～15 ° with the optimum angle that is positioned at the revoliving arm axis of desired location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87207385 CN87207385U (en) | 1987-08-10 | 1987-08-10 | Spring suspender with constant force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87207385 CN87207385U (en) | 1987-08-10 | 1987-08-10 | Spring suspender with constant force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87207385U true CN87207385U (en) | 1988-10-26 |
Family
ID=4822830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87207385 Withdrawn CN87207385U (en) | 1987-08-10 | 1987-08-10 | Spring suspender with constant force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87207385U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089095A (en) * | 2014-06-30 | 2014-10-08 | 江苏大力城电气有限公司 | Constant support and hanger |
-
1987
- 1987-08-10 CN CN 87207385 patent/CN87207385U/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089095A (en) * | 2014-06-30 | 2014-10-08 | 江苏大力城电气有限公司 | Constant support and hanger |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |