CN203412881U - Shear pin mechanism in large chain wheel of dryer material bed driving protection device - Google Patents
Shear pin mechanism in large chain wheel of dryer material bed driving protection device Download PDFInfo
- Publication number
- CN203412881U CN203412881U CN201320532926.6U CN201320532926U CN203412881U CN 203412881 U CN203412881 U CN 203412881U CN 201320532926 U CN201320532926 U CN 201320532926U CN 203412881 U CN203412881 U CN 203412881U
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- Prior art keywords
- material bed
- shear pin
- shear
- force
- flange
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Abstract
The utility model discloses a shear pin mechanism in a large chain wheel of a dryer material bed driving protection device. A flange, a large gear and a flange cover are connected through two shear pins. A hexagonal top cap is arranged at one end of each shear pin rod, and a screw fastener is arranged at the other end of each shear pin rod. An annular groove is formed in the middle part of each shear pin rod, and is positioned in a contact surface between the flange and the large gear. The shear pin rods are 105mm long, and have diameters Phi of 12mm, and the annular grooves in the middle parts of the shear pin rods are 3mm wide and 2mm deep. When the rated tensile force of a material bed exceeds normal tensile force for mechanical causes or other causes, a chain of the material bed can transmit the force to one dislocation part, another dislocation part 3 needs to overcome strengthened transmission force through the shear pins to drive a material bed driving shaft to rotate, and when dislocation force on the shear pins is stronger than shear strength, the shear pins can be cut out under the action of the dislocation force, the material bed driving shaft losing the driving force can slowly stop rotating, and a speed reducer idly rotates, so that the material bed is protected, and damage to the speed reducer is avoided.
Description
Technical field
The utility model belongs to machinery part, relates to a kind of dryer material bed and drives the shear pin mechanism in protective gear hinge wheel.
Background technique
Current drying chance runs into when material bed breaks down, original shear pin on hinge wheel fails to be cut off, and because finding can to press emergency stop switch in time, at this moment material bed is just out of service, if find not in time, material bed will suffer to damage, speed reducer may be burnt.
Model utility content
The utility model object is to provide a kind of dryer material bed and drives the shear pin mechanism in protective gear hinge wheel; solving dryer can run into when material bed breaks down; original shear pin fails to be cut off, and material bed is by the problem of suffering to damage, speed reducer may be burnt.
Particular content of the present utility model:
A kind of dryer material bed drives the shear pin mechanism in protective gear hinge wheel; it is characterized in that: between flange and blind flange, gearwheel is housed; flange, gearwheel and blind flange are connected by two shear pins; there is hexagonal top cap shearing pin rod one end; the shearing pin rod the other end has spiral shell button; there is circular groove the centre of shearing pin rod, and the position of shearing pin rod pressed on ring shape groove is on the surface of contact between flange and gearwheel.
The long 105mm of shearing pin rod, diameter of phi 12mm, the groove width 3mm of the circular groove in the middle of shearing pin rod, groove depth 2mm.
The utility model effect:
The shearing force that this dryer material bed drives the shearing carrying diameter of the shear pin in protective gear hinge wheel to meet shear pin is less than material bed and is subject to maximum pulling force, and when material bed exceeds its specified pulling force, shear pin will be cut off.The deformable contour that the shear deformation zone that groove provides can meet shear pin cut-out texturing zone does not exceed circular groove, thereby has avoided and rotation changing of the relative positions parts formation interference, is convenient to more renew shear pin.
Accompanying drawing explanation
Fig. 1 is that dryer material bed drives the shear pin plan view in protective gear hinge wheel.
Fig. 2 is that dryer material bed drives the shear pin left view in protective gear hinge wheel.
Fig. 3 is that dryer material bed drives hinge wheel assembling plan view.
Fig. 4 is that dryer material bed drives hinge wheel assembling plan view.
In figure:
1, flange, 2, blind flange, 3, gearwheel 4, shear pin, 5 hexagonal top caps.
Embodiment
A kind of dryer material bed as shown in Figure 3,4 drives the shear pin mechanism in protective gear hinge wheel, between flange and blind flange, gearwheel is housed, and flange, gearwheel and blind flange are connected by two shear pins.The position of shearing pin rod pressed on ring shape groove is on the surface of contact between flange and gearwheel.
There is hexagonal top cap shearing pin rod one end as shown in Figure 1, 2, and the shearing pin rod the other end has spiral shell button, and there is circular groove the centre of shearing pin rod, the long 105mm of shearing pin rod, diameter of phi 12mm, the groove width 3mm of the circular groove in the middle of shearing pin rod, groove depth 2mm.
As Fig. 3, the shear constitution shown in 4 is that shear pin transmits feed bed live axle flange 1 in the mode that is excessively connected by the moment of torsion of sprocket wheel 3.Two rotation changing of the relative positions part laminating changing of the relative positions face positions are shear pin shearing section, and there is a circular groove shearing section, and groove center is for shearing center of effort, and groove inner diameter is sheared carrying diameter for design, and the width of groove and the degree of depth are shear deformation containment region.Shear shearing force that carrying diameter meets shear pin and be less than material bed and be subject to maximum pulling force, when material bed exceeds its specified pulling force, shear pin will be cut off.The deformable contour that the shear deformation zone that groove provides can meet shear pin cut-out texturing zone does not exceed circular groove, thereby has avoided and rotation changing of the relative positions parts formation interference, is convenient to more renew shear pin.
Shear pin structure Design and Calculation:
1, the material of shear pin:
Q235, its yield strength is σ s=240Mpa
2, computation of cutting force formula
In on て (shearing stress)=F(shear plane, make a concerted effort)/A(sectional area)≤[て] (bolt allowable shear stress) [て]=σ s/3.5-5
3, size Selection and position
The centre distance of two shearing bearing pins is 160mm
4, the shearing force of shear pin
Shear pin maximum allowable shearing stress [て] is 68.57Mpa, the output torque of speed reducer is 2010Nm, the gear ratio of little chain gear and gearwheel is 19:48, the output torque of transmission shaft is 5078Nm, shearing force F≤the 13088N of transmission shaft to shear pin, F > 13088N shear pin will be cut off.
Dryer material bed drives protective gear, and the transmission of its driving force is by chain, to pass to the hinge wheel on dryer material bed live axle by the little chain gear on speed reducer output shaft, and gearwheel drives material bed drive shaft turns.And in hinge wheel structure, being provided with overcurrent protection structure, structure is changing of the relative positions shear constitution, a pair of changing of the relative positions parts 1 and 3, consists of with the shear pin 4 of the restriction changing of the relative positions parts changing of the relative positions.The shear strength of shear pin 4 is set as being less than the specified pulling force of material bed, when the specified pulling force of material bed is subject to machinery or other reasons when exceeding its correct tension, material bed chain will pass to power changing of the relative positions parts 1, and changing of the relative positions parts 3 need overcome the driving force of increase to drive material bed drive shaft turns by shear pin, when the changing of the relative positions power on shear pin of acting on is greater than shear strength, changing of the relative positions power will be cut off shear pin (following Fig. 2), loses the material bed live axle of driving force, can slowly stop operating.And speed reducer forms idle running, play preservative bed and speed reducer and be not damaged.
Claims (2)
1. a dryer material bed drives the shear pin mechanism in protective gear hinge wheel; it is characterized in that: between flange and blind flange, gearwheel is housed; flange, gearwheel and blind flange are connected by two shear pins; there is hexagonal top cap shearing pin rod one end; the shearing pin rod the other end has spiral shell button; there is circular groove the centre of shearing pin rod, and the position of shearing pin rod pressed on ring shape groove is on the surface of contact between flange and gearwheel.
2. dryer material bed drives the shear pin mechanism in protective gear hinge wheel according to claim 1, it is characterized in that: the long 105mm of shearing pin rod, diameter of phi 12mm, the groove width 3mm of the circular groove in the middle of shearing pin rod, groove depth 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320532926.6U CN203412881U (en) | 2013-08-29 | 2013-08-29 | Shear pin mechanism in large chain wheel of dryer material bed driving protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320532926.6U CN203412881U (en) | 2013-08-29 | 2013-08-29 | Shear pin mechanism in large chain wheel of dryer material bed driving protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203412881U true CN203412881U (en) | 2014-01-29 |
Family
ID=49975770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320532926.6U Expired - Fee Related CN203412881U (en) | 2013-08-29 | 2013-08-29 | Shear pin mechanism in large chain wheel of dryer material bed driving protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203412881U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438068A (en) * | 2013-08-29 | 2013-12-11 | 天津机辆轨道交通装备有限责任公司 | Shear pin mechanism in large chain wheel of drying machine material bed driving and protecting device |
| CN108895147A (en) * | 2018-09-21 | 2018-11-27 | 中车资阳机车有限公司 | A kind of split type Quick universal gear mechanism |
-
2013
- 2013-08-29 CN CN201320532926.6U patent/CN203412881U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438068A (en) * | 2013-08-29 | 2013-12-11 | 天津机辆轨道交通装备有限责任公司 | Shear pin mechanism in large chain wheel of drying machine material bed driving and protecting device |
| CN108895147A (en) * | 2018-09-21 | 2018-11-27 | 中车资阳机车有限公司 | A kind of split type Quick universal gear mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140129 Termination date: 20170829 |