CN111237389B - Secondary shearing protection device - Google Patents
Secondary shearing protection device Download PDFInfo
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- CN111237389B CN111237389B CN202010039357.6A CN202010039357A CN111237389B CN 111237389 B CN111237389 B CN 111237389B CN 202010039357 A CN202010039357 A CN 202010039357A CN 111237389 B CN111237389 B CN 111237389B
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- Prior art keywords
- sleeve
- shaft
- shearing
- pin
- shaped
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G11/00—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P7/00—Securing or covering of load on vehicles
- B60P7/06—Securing of load
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D9/00—Couplings with safety member for disconnecting, e.g. breaking or melting member
- F16D9/06—Couplings with safety member for disconnecting, e.g. breaking or melting member by breaking due to shear stress
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/182—Level alarms, e.g. alarms responsive to variables exceeding a threshold
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
Abstract
The invention relates to a secondary shearing protection device which comprises a U-shaped connecting lug, an outer sleeve, a thrust bearing, an I-shaped sleeve, a primary shearing sleeve, a secondary shearing shaft and a belleville spring set, wherein the upper part of the U-shaped connecting lug penetrates through the outer sleeve and is connected with a connecting shaft and a nut, the thrust bearing is sleeved between the U-shaped connecting lug and the outer sleeve, the belleville spring set is arranged in the primary shearing sleeve, the I-shaped sleeve is arranged in the primary shearing sleeve and is positioned above the belleville spring set, the upper end part of the secondary shearing shaft penetrates through the primary shearing sleeve and the belleville spring set and penetrates through the I-shaped sleeve, the lower end part of the secondary shearing shaft is connected with a pin shaft and a nut, the primary shearing sleeve, the secondary shearing shaft and the I-shaped sleeve are fixed through a safety pin, the upper end part of the primary shearing sleeve extends into an inner hole of the outer sleeve. The secondary shearing protection device can achieve primary shearing early warning, the secondary shearing protection device is separated, and the safety pin can be replaced and can be repeatedly used after being reassembled.
Description
Technical Field
The invention belongs to the field of manufacturing of metallurgical hoisting tension, binding and impact arresting connecting pieces, and particularly relates to a device for protecting the safety of bound objects or impacted objects through secondary shearing of safety pins during tension binding and impact arresting operations.
Background
At present, large-scale valuable equipment transportation and military products are impacted and blocked, the early warning is made when the early overload is required to achieve the purpose that a safety pin is quickly sheared off at the first stage, the safety of bound objects is protected, and the adjustment is made in time; and when the impact force value reaches the upper limit of the rated maximum force value, the secondary shearing protection device is separated to protect the impact object from being damaged.
Disclosure of Invention
The invention aims to provide a secondary shearing protection device which can achieve primary shearing early warning, is separated from a secondary shearing protection device, and can be repeatedly used after a safety pin is replaced and reassembled.
The invention relates to a secondary shearing protection device, which comprises a connecting shaft, a U-shaped connecting lug, an outer sleeve, a thrust bearing, an I-shaped sleeve, a primary shearing sleeve, a secondary shearing shaft, a belleville spring group, a long screw rod, a safety pin and a pin shaft, wherein the outer sleeve adopts an inverted cylinder structure, a longitudinal inner hole is formed in the center of the I-shaped sleeve along the axis direction of the I-shaped sleeve, two lug plates are arranged at the upper part of the U-shaped connecting lug, a stepped shaft is arranged at the lower part of the U-shaped connecting lug, the upper part of the U-shaped connecting lug penetrates through the bottom of the cylinder, the connecting shaft penetrates through the two lug plates and is fixed by a nut, the thrust bearing is sleeved on the outer surface of the stepped shaft of the U-shaped connecting lug, a tightening ring of the thrust bearing is matched with the stepped shaft, a loosening ring of the thrust bearing is tightly attached to the inner wall of the outer sleeve, the belleville, The butterfly spring group penetrates into a longitudinal inner hole of the I-shaped sleeve, the safety pin penetrates through the first-stage shearing sleeve, the second-stage shearing shaft and the I-shaped sleeve and fixes the first-stage shearing sleeve, the second-stage shearing shaft and the I-shaped sleeve, the pin shaft penetrates through the two connecting lugs at the lower end part of the second-stage shearing shaft and is fixed by the nuts, the upper end part of the first-stage shearing sleeve extends into the inner hole of the outer sleeve, the end part of the long screw penetrates through the outer sleeve, the I-shaped sleeve and the first-stage shearing sleeve and is fixed by the nuts, and the.
The invention relates to a secondary shearing protection device, wherein a belleville spring group comprises a plurality of belleville springs which are sequentially overlapped along the axial direction of a primary shearing sleeve.
The secondary shearing protection device is characterized in that the two adjacent belleville springs are arranged oppositely.
The invention relates to a secondary shearing protection device, wherein the lower part of an I-shaped sleeve is provided with a transverse pin hole, and the diameter of the transverse pin hole for accommodating the head end of a safety pin is larger than that of the transverse pin hole for accommodating the tail end of the safety pin.
The secondary shearing protection device also comprises a split pin and a check ring, wherein the split pin is arranged at the tail end of the safety pin.
The invention relates to a secondary shearing protection device, wherein a safety pin penetrates through a transverse pin hole, and the head of the safety pin is positioned in the transverse pin hole.
The invention relates to a secondary shearing protection device, wherein two oblong holes are formed in the middle part of an I-shaped sleeve in opposite positions, and a long screw penetrates through the two oblong holes.
The invention relates to a secondary shearing protection device, wherein a pin shaft is a straight-head pin shaft.
The invention relates to a secondary shearing protection device, wherein a connecting shaft is a hexagonal head connecting shaft.
The secondary shearing protection device has the following beneficial effects:
1. the practicality is strong, both has been applicable to the transportation and has binded and pulling force hoist and mount, is applicable to rigging again and blocks or the dictyosome blocks, can effectually protect by the transported substance and by the impacter of blocking not damaged.
2. The safety pin can realize the early warning of the first-stage shearing and the separation of the second-stage shearing protection device.
3. The safety pin has the advantages of simple structure, low cost, replaceable safety pin, reusability of other parts except the safety pin, safety and reliability.
The secondary shear protection device of the present invention is further described below with reference to the accompanying drawings.
Drawings
FIG. 1 is an exploded view of a secondary shear protection device of the present invention;
FIG. 2 is a front cross-sectional view of the secondary shear protection device of the present invention;
FIG. 3 is a left side view of the secondary shear protection device of the present invention;
FIG. 4 is a force diagram of the secondary shear protection device of the present invention as it is pulled through the binding;
fig. 5 is a force diagram of the secondary shear protection device of the present invention at impact arresting.
Detailed Description
As shown in fig. 1-3, the secondary shearing protection device of the invention comprises a connecting shaft 1, a U-shaped connecting lug 2, an outer sleeve 3, a thrust bearing 4, an i-shaped sleeve 5, a primary shearing sleeve 6, a secondary shearing shaft 7, a belleville spring group 8, a long screw 9, a safety pin 10, a pin shaft 11, a split pin 12, a retainer ring 13 and a plurality of nuts 14.
Referring to fig. 2 and 3, the outer casing 3 is in the form of an inverted cylinder 31, and the cylinder 31 has a mounting hole 32 at the center of the bottom wall.
Referring to fig. 1 and 2, the U-shaped engaging lug 2 has two lugs 21 at its upper part and a stepped shaft 22 at its lower part, the diameter of the lowermost part of the stepped shaft 22 is larger than that of the upper part of the stepped shaft 22, the upper part of the U-shaped engaging lug 2 passes through the bottom of the cylinder 31, and the connecting shaft 1 passes through the two lugs 21 and is fixed by the nut 14. As shown in fig. 2, the thrust bearing 4 is sleeved on the outer surface of the stepped shaft 22 of the U-shaped engaging lug 2, the tightening ring 41 of the thrust bearing 4 is matched with the stepped shaft 22, the tightening ring 41 is clamped on the step of the stepped shaft 22, and the loosening ring 42 of the thrust bearing 4 is tightly attached to the inner wall of the outer sleeve 3.
As shown in fig. 1 and 2, the i-shaped sleeve 5 is a cylindrical structure with an i-shaped cross section, a longitudinal inner hole 51 is formed in the center of the i-shaped sleeve 5 along the axial direction of the i-shaped sleeve, two transverse pin holes 52 are formed in the corresponding positions of the lower portion of the i-shaped sleeve 5, and two oblong holes 53 are formed in the corresponding positions of the middle portion of the i-shaped sleeve 5. As shown in fig. 2, the belleville spring group 8 is arranged in an inner hole of the first-stage shearing sleeve 6, the i-shaped sleeve 5 is arranged in an inner hole 61 of the first-stage shearing sleeve 6 and is positioned above the belleville spring group 8, the upper end portion of the second-stage shearing shaft 7 penetrates through the first-stage shearing sleeve 6 and the belleville spring group 8 and penetrates into a longitudinal inner hole 51 of the i-shaped sleeve 5, the safety pin 10 penetrates through the first-stage shearing sleeve 6, the second-stage shearing shaft 7 and the i-shaped sleeve 5 and fixes the first-stage shearing shaft, the pin shaft 11 penetrates through two connecting lugs at the lower end portion of the second-stage shearing shaft 7 and is fixed by the nut 14, the upper end portion of the first-stage shearing sleeve 6 extends into an inner hole 33 of the outer sleeve 3, the end portion of the long screw 9 penetrates through the outer sleeve 3, the long round hole 53 of the i-shaped sleeve 5 and the hole 62.
As shown in fig. 1 and 2, the belleville spring group 8 includes a plurality of belleville springs 81, the plurality of belleville springs 81 are sequentially stacked along the axial direction of the primary shearing sleeve 6, and two adjacent belleville springs 81 are disposed opposite to each other.
As shown in fig. 2, the transverse pin hole (the right-hand transverse pin hole 52 in fig. 2) receiving the head end of the shear pin 10 has a larger diameter than the transverse pin hole (the left-hand transverse pin hole 52 in fig. 2) receiving the tail end of the shear pin 10, the shear pin 10 passes through the transverse pin hole 52 with the head of the shear pin 10 positioned within the transverse pin hole 52, and the cotter pin 12 is fitted to the tail end of the shear pin 10.
As shown in fig. 2, the pin 11 is a straight-head pin, and the connecting shaft 1 is a hexagonal-head connecting shaft. The shear pin 10 decreases in diameter from the head end to the tail end.
When the secondary shearing protection structure is assembled, the U-shaped connecting lug 2 and the thrust bearing 4 are assembled and then connected with the outer sleeve 3; sequentially loading a belleville spring 81 into an inner hole of a first-stage shearing sleeve 6, then penetrating a second-stage shearing shaft 7 through the first-stage shearing sleeve 6 and the belleville spring 81, simultaneously loading an I-shaped sleeve 5 into the first-stage shearing sleeve 6, connecting the first-stage shearing sleeve 6, the second-stage shearing shaft 7 and the I-shaped sleeve 5 by using a safety pin 10, loading the I-shaped sleeve end of the assembly into an inner hole of an outer sleeve 3, hinging the I-shaped sleeve end by using a long screw 9, and fixing the outer end of the long screw 9 by using a nut 14; and finally, connecting the hexagonal head connecting shaft 1 with the U-shaped connecting lug 2 and fixing the hexagonal head connecting shaft by using a nut 14, connecting the linear head pin shaft 11 with the second-stage shearing shaft 7 and fixing the linear head pin shaft by using the nut 14, and limiting the safety pin 10 by using a retainer ring 13 and a split pin 12.
The working principle of the secondary shearing protection structure is as follows:
1) when the pulling and binding object is transported on a vehicle, the middle part of the binding chain or the rigging is connected with the pin shaft 11 and the connecting shaft 1 at the two ends of the secondary shearing protection structure, two tail ends are reserved, one tail end of the binding chain or the rigging is connected with the bound object, the other tail end of the binding chain or the rigging is connected with the transport vehicle, and the pretightening force reaches the value F; when the impact force value or the pulling force value reaches the rope rated minimum limit force value N, the first-stage shearing sleeve 6 shears one side of the opening pin end of the safety pin 10, an early warning is given, the bound rope is loosened, the rope is required to be tightly adjusted and the safety pin is replaced, if the safety pin is not replaced in time, the second-stage shearing shaft 7 drives the I-shaped sleeve 5 to directly act the force value on the belleville spring group 8, the compression of the belleville spring reaches the force value buffering, when the impact force value or the pulling force value reaches the rope rated maximum limit force value P, the second-stage shearing shaft 7 simultaneously shears two sides of the safety pin 10, and the assembly parts of the second-stage shearing shaft 7 and the first-shaped pin shaft 11 are separated from other assembly parts of the second-stage shearing protection structure, so that. The force is shown in figure 4.
2) When the block is impacted and blocked, two ends of the block rigging or the net are respectively connected with a secondary shearing protection structure and are fixedly connected with fixed objects at the two ends, and the pre-tightening force reaches a value F; when the impact force value or the tension value reaches the minimum limit force value N of the arresting rigging, the first-stage shearing sleeve 6 shears the end of the opening pin of the safety pin 10 on one side, the impact force value continuously increases while the arresting rigging is loosened, the second-stage shearing shaft 7 drives the I-shaped sleeve 5 to directly act on the force value on the belleville spring group 8, the compression of the belleville spring is reduced after the force value buffering is achieved, the belleville spring is compressed to a certain degree, when the impact force value or the tension value reaches the maximum limit force value P of the arresting rigging, the second-stage shearing shaft 7 simultaneously shears the two sides of the safety pin 10, and the assembly parts of the second-stage shearing shaft 7 and the first-shaped pin shaft 11 are separated from the other assembly parts of the second-stage. The force is shown in figure 5.
According to the principle, when binding is carried out, the binding chain or the rope is loosened after primary shearing, an early warning is given, and the binding is adjusted in time; when the impact is carried out, the force value reaches the upper limit of the rated maximum force value, the secondary shearing is carried out, the structure is protected from being separated through secondary shearing, the impact object is protected from being damaged, and the safety is guaranteed.
The secondary shearing protection structure has the following beneficial effects:
1. the practicality is strong, both has adapted transportation to bind and pulling force hoist and mount, is fit for rigging again and blocks or the dictyosome blocks, can effectually protect by the transported substance and by the impacter of blocking not damaged.
2. The safety pin realizes secondary shearing, can give an early warning, and can also buffer and fall the ability.
3. Simple structure, low cost, safety and reliability, and can be repeatedly used except that the safety pin is replaceable.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (9)
1. A secondary shearing protection device is characterized in that: comprises a connecting shaft (1), a U-shaped connecting lug (2), an outer sleeve (3), a thrust bearing (4), an I-shaped sleeve (5), a primary shearing sleeve (6), a secondary shearing shaft (7), a belleville spring group (8), a long screw (9), a safety pin (10) and a pin shaft (11), wherein the outer sleeve (3) adopts an inverted cylinder body (31) structure, a longitudinal inner hole (51) is formed in the center of the I-shaped sleeve (5) along the axis direction of the I-shaped sleeve, two lug plates (21) are arranged on the upper portion of the U-shaped connecting lug (2), a stepped shaft (22) is arranged on the lower portion of the U-shaped connecting lug (2), the upper portion of the U-shaped connecting lug (2) penetrates through the bottom of the cylinder body (31), the connecting shaft (1) penetrates through the two lug plates (21) and is fixed by a nut, the thrust bearing (4) is sleeved on the outer surface of the stepped shaft (22) of the, a loose ring (42) of the thrust bearing (4) is tightly attached to the inner wall of the outer sleeve (3), a belleville spring group (8) is arranged in an inner hole of a first-stage shearing sleeve (6), an I-shaped sleeve (5) is arranged in the inner hole of the first-stage shearing sleeve (6) and is positioned above the belleville spring group (8), the upper end part of a second-stage shearing shaft (7) penetrates through the first-stage shearing sleeve (6) and the belleville spring group (8) and penetrates into a longitudinal inner hole (51) of the I-shaped sleeve (5), a safety pin (10) penetrates through the first-stage shearing sleeve (6), the second-stage shearing shaft (7) and the I-shaped sleeve (5) and fixes the first-stage shearing shaft, a pin shaft (11) penetrates through two connecting lugs at the lower end part of the second-stage shearing shaft (7) and is fixed by a nut, the upper end part of the first-stage shearing sleeve (6) extends into the inner hole of the outer sleeve (3), the end part of a long screw, the I-shaped sleeve (5) is positioned below the U-shaped connecting lug (2) and the thrust bearing (4).
2. The secondary shear protection device of claim 1, wherein: the butterfly spring group (8) comprises a plurality of butterfly springs (81), and the plurality of butterfly springs (81) are sequentially overlapped along the axial direction of the primary shearing sleeve (6).
3. The secondary shear protection device of claim 2, wherein: the two adjacent belleville springs (81) are arranged oppositely.
4. The secondary shear protection device of claim 3, wherein: two transverse pin holes (52) are formed in the lower parts of the I-shaped sleeves (5) in opposite positions, and the diameter of the transverse pin hole for accommodating the head end of the safety pin (10) is larger than that of the transverse pin hole for accommodating the tail end of the safety pin (10).
5. The secondary shear protection device of claim 4, wherein: the safety pin further comprises a split pin (12) and a retainer ring (13), wherein the split pin (12) is arranged at the tail end of the safety pin (10).
6. The secondary shear protection device of claim 5, wherein: the safety pin (10) passes through the transverse pin hole (52) and the head of the safety pin (10) is positioned in the transverse pin hole (52).
7. The secondary shear protection device of claim 6, wherein: two long circular holes (53) are formed in the opposite positions of the middle of the I-shaped sleeve (5), and the long screw (9) penetrates through the two long circular holes (53).
8. The secondary shear protection device of claim 7, wherein: the pin shaft (11) is a straight-head pin shaft.
9. The secondary shear protection device of claim 8, wherein: the connecting shaft (1) is a hexagonal head connecting shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010039357.6A CN111237389B (en) | 2020-01-15 | 2020-01-15 | Secondary shearing protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010039357.6A CN111237389B (en) | 2020-01-15 | 2020-01-15 | Secondary shearing protection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111237389A CN111237389A (en) | 2020-06-05 |
| CN111237389B true CN111237389B (en) | 2021-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010039357.6A Active CN111237389B (en) | 2020-01-15 | 2020-01-15 | Secondary shearing protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111237389B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU4939093A (en) * | 1992-09-04 | 1994-03-29 | Canada Coupling, Inc. | Improved swivel pulling eye with breakaway |
| US6007267A (en) * | 1998-07-16 | 1999-12-28 | Kenneth Roberts | Mechanical load fuse assembly |
| US8424846B1 (en) * | 2009-09-18 | 2013-04-23 | Lincoln Precision Machining Company | Overload warning system for a winch hoist |
| CN203975237U (en) * | 2014-07-23 | 2014-12-03 | 锦州鑫鼎航空维修工程有限公司 | Plane draw bar shear pin fracture detection alarm device |
| CN105042003B (en) * | 2015-09-08 | 2017-06-09 | 山东省水电设备厂 | The cutting pin machine overload protection structure of multistage overload prevention |
| CN207793860U (en) * | 2018-01-25 | 2018-08-31 | 河北宝力工程装备股份有限公司 | A kind of Multistage damping bearing |
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2020
- 2020-01-15 CN CN202010039357.6A patent/CN111237389B/en active Active
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| Publication number | Publication date |
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| CN111237389A (en) | 2020-06-05 |
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Effective date of registration: 20230817 Address after: 072550 Liuling Road, Xushui District, Baoding City, Hebei Province Patentee after: HEBEI JULI EMERGENCY EQUIPMENT TECHNOLOGY Co.,Ltd. Address before: 072550 Xushui District, Baoding City, Hebei Province, Juli Road Patentee before: JULI SLING Co.,Ltd. |