CN220011972U - Safety protection device for load friction and skid of variable-frequency loop chain electric hoist - Google Patents
Safety protection device for load friction and skid of variable-frequency loop chain electric hoist Download PDFInfo
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- CN220011972U CN220011972U CN202222916480.9U CN202222916480U CN220011972U CN 220011972 U CN220011972 U CN 220011972U CN 202222916480 U CN202222916480 U CN 202222916480U CN 220011972 U CN220011972 U CN 220011972U
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Abstract
The utility model relates to the technical field of hoisting machinery, and discloses a load friction slipping safety protection device of a variable-frequency loop chain electric hoist, which comprises a first friction wheel, wherein a hole is formed in the inner side of the left end of the first friction wheel, a bolt fixing sleeve is arranged in the hole, an adjusting slipping bolt is fixedly connected to the inner side of the bolt fixing sleeve, a deep groove ball bearing is arranged on the outer side of the left end of the adjusting slipping bolt, hole check rings are arranged on the left side and the right side of the deep groove ball bearing, a framework oil seal is arranged on the right side of the hole check rings, and a second friction wheel is arranged on the right side of the framework oil seal. This safety device that skids is rubbed to frequency conversion chain electric block load is provided with full metal lock nut and adjusts the bolt that skids, can change the frictional force of friction disc to realize the function of adjustable moment of torsion, when the weight of heavy object is greater than the biggest frictional force that the friction disc can provide, the heavy object can not be lifted, thereby realizes overload protection's function, and convenient dismantlement, the daily dismantlement maintenance of being convenient for.
Description
Technical Field
The utility model relates to the technical field of hoisting machinery, in particular to a load friction slipping safety protection device of a variable-frequency loop chain electric hoist.
Background
The electric hoist is special hoisting equipment, is arranged on the crown block and the gantry crane, has the characteristics of small volume, light dead weight, simple operation, convenient use and the like, and is used for places such as industrial and mining enterprises, storage, wharfs and the like. The friction slip safety protection device is a device for ensuring the safe operation of the electric hoist through friction force. Most of the electric hoists at present do not have friction slipping safety protection devices, cannot realize the function of adjusting torque, do not have overload protection function, and are inconvenient to detach and maintain daily.
According to the comparison document (patent name: double electric hoist, authorized bulletin number: CN204661217U, application number: CN 201520227461.2), the double electric hoist is provided with two electric hoists, but cannot realize the function of adjusting torque and cannot realize the function of overload protection.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the utility model provides a load friction and skid safety protection device for a variable-frequency loop chain electric hoist, which solves the problems that the double electric hoist provided in the background is provided with two electric hoists, but cannot realize the function of adjusting torque and cannot realize the function of overload protection, and is convenient to use.
(II) technical scheme
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a frequency conversion chain electric block load friction safety arrangement that skids, includes friction wheel one, the left end inboard of friction wheel one is provided with the hole, the inside of hole is provided with the bolt fastening cover, the inside fixedly connected with of bolt fastening cover is adjusted the bolt that skids, the left end outside of adjusting the bolt that skids is provided with deep groove ball bearing, deep groove ball bearing left and right sides is provided with the hole retaining ring, the right side of hole retaining ring is provided with the skeleton oil blanket, the right-hand friction wheel that is provided with of skeleton oil blanket is second, the intermediate position of friction wheel two and friction wheel one is provided with the friction disc, the inside of disc spring is provided with the skewed tooth axle, the intermediate position in skewed tooth axle outside is provided with the stopper, the left end of leaning on the skewed tooth axle outside is provided with B type square head key one, the right-hand member of skewed tooth axle outside is provided with the sleeve, telescopic right side is provided with full metal lock nut.
Preferably, the friction plate is of an annular structure, the friction plate is movably connected with the first friction wheel and the second friction wheel, a motor is connected to the outer side of the first friction wheel, and when the first friction wheel is driven by the motor, the second friction wheel is driven by friction force brought by the friction plate.
Preferably, the disc spring is located the intermediate position of friction wheel two and stopper, the external diameter size of stopper is greater than the size of the middle hole of disc spring, and the effect of stopper is with disc spring restriction in certain within range activity, and when the stopper moved to the left side, the disc spring can compress tightly gradually, and the effort that the disc spring other end was applyed to friction wheel two also can increase.
Preferably, the first B-shaped square head key is positioned in a groove in the second friction wheel, the first B-shaped square head key is matched with the groove in the second friction wheel, the second friction wheel can drive the inclined gear shaft to rotate through a structure provided with a buckle, and the inclined gear shaft drives the gear to rotate again, so that the lifting principle is realized.
Preferably, the adjusting slipping bolt is located at the innermost part of the whole structure, the adjusting slipping bolt is movably connected with the helical gear shaft, the adjusting slipping bolt is in threaded connection with the all-metal locking nut, the limiting block can be driven to move by adjusting the tightness of the all-metal locking nut, the limiting block compresses the disc spring, the disc spring compresses the friction wheel II again, and accordingly friction force of the friction plate on the friction wheel I and the friction wheel II is changed, and the torque adjusting function is achieved.
Preferably, the left end outside of skewed tooth axle is provided with deep groove ball bearing and skeleton oil blanket, be swing joint between skewed tooth axle and deep groove ball bearing and the skeleton oil blanket, the smooth rotation of friction pulley one has been guaranteed in the setting of deep groove ball bearing, and the inside leakproofness of deep groove ball bearing has been guaranteed in the setting of skeleton oil blanket, has guaranteed that deep groove ball bearing also can not appear the phenomenon of oil leak in long-time work.
Compared with the prior art, the utility model provides a load friction slipping safety protection device for a variable frequency loop chain electric hoist, which has the following beneficial effects:
1. according to the load friction and skid safety protection device of the variable-frequency loop chain electric hoist, through the arrangement of the all-metal lock nut and the skid adjusting bolt, the friction force of the friction plate on the friction wheel I and the friction wheel II can be changed, so that the torque adjusting function is realized;
2. the friction wheel II in the variable-frequency loop chain electric hoist load friction slipping safety protection device can drive the gear on the helical gear shaft to rotate so as to lift the heavy object, when the weight of the heavy object is larger than the maximum friction force provided by the friction plate, the friction wheel I is driven by the motor, but the friction wheel II cannot rotate, so that slipping occurs, and the heavy object cannot be lifted at the moment, so that the overload protection function is realized;
3. the load friction slipping safety protection device for the variable-frequency loop chain electric hoist is simple in structure, and other components can be taken out of the load friction slipping safety protection device by unscrewing the all-metal locking nut, so that daily disassembly and maintenance are facilitated.
Drawings
FIG. 1 is a schematic perspective view of the first embodiment of the present utility model;
FIG. 2 is a schematic diagram of a second perspective structure of the present utility model;
FIG. 3 is a schematic perspective view of a third embodiment of the present utility model;
FIG. 4 is a schematic cross-sectional view of the present utility model.
Wherein: 1. a friction wheel I; 2. a hole; 3. a bolt fixing sleeve; 4. adjusting a slipping bolt; 5. deep groove ball bearings; 6. a hole retainer ring; 7. a framework oil seal; 8. a friction wheel II; 9. a friction plate; 10. a disc spring; 11. a helical gear shaft; 12. a limiting block; 13. b-shaped square head key I; 14. b-type square head key II; 15. a sleeve; 16. an all-metal lock nut.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-4, the present utility model provides a technical solution: the utility model provides a frequency conversion endless chain electric hoist load friction safety arrangement that skids, including friction wheel one 1, the left end inboard of friction wheel one 1 is provided with hole 2, the inside of hole 2 is provided with bolt fixing sleeve 3, the inside fixedly connected with of bolt fixing sleeve 3 adjusts slip bolt 4, the left end outside of adjusting slip bolt 4 is provided with deep groove ball bearing 5, the left and right sides of deep groove ball bearing 5 are provided with hole retaining ring 6, the right side of hole retaining ring 6 is provided with skeleton oil blanket 7, the right side of skeleton oil blanket 7 is provided with friction wheel two 8, the intermediate position of friction wheel two 8 and friction wheel one 1 is provided with friction disc spring 10, the inside of disc spring 10 is provided with helical gear axle 11, the intermediate position outside helical gear axle 11 is provided with stopper 12, the left end that leans towards the outside of helical gear axle 11 is provided with B type square head key one 13, the right end that leans towards the outside of helical gear axle 11 is provided with B type square head key two 14, the right end of helical gear axle 11 is provided with sleeve 15, sleeve 15 right side is provided with full metal locking nut 16;
the friction plate 9 is of an annular structure, the friction plate 9 is movably connected with the friction wheel 1 and the friction wheel 8, the disc spring 10 is positioned in the middle of the friction wheel 8 and the limiting block 12, the outer diameter of the limiting block 12 is larger than the middle hole of the disc spring 10, the B-shaped square head key 13 is positioned in a groove in the friction wheel 8, the B-shaped square head key 13 is matched with the groove in the friction wheel 8, the outer side of the friction wheel 1 is connected with a motor, when the friction wheel 1 is driven by the motor, the friction wheel 8 is also driven by friction force brought by the friction plate 9, the limiting block 12 is used for limiting the disc spring 10 to move within a certain range, when the limiting block 12 moves leftwards, the disc spring 10 is gradually compressed, the acting force applied by the other end of the disc spring 10 to the friction wheel 8 is also increased, and through the structure provided with a buckle, the friction wheel 8 can drive the helical gear 11 to rotate, and the helical gear 11 drives the gear to rotate, so that the lifting principle is realized;
the adjusting slipping bolt 4 is located at the innermost part of the whole structure, the adjusting slipping bolt 4 is movably connected with the helical gear shaft 11, the adjusting slipping bolt 4 is in threaded connection with the all-metal lock nut 16, the deep groove ball bearing 5 and the framework oil seal 7 are arranged at the outer side of the left end of the helical gear shaft 11, the helical gear shaft 11 is movably connected with the deep groove ball bearing 5 and the framework oil seal 7, the limiting block 12 can be driven to move by adjusting the tightness of the all-metal lock nut 16, the limiting block 12 tightly presses the disc spring 10, the disc spring 10 further presses the friction wheel two 8, friction force of the friction plate 9 on the friction wheel one 1 and the friction wheel two 8 can be changed, the function of adjusting torque is achieved, the arrangement of the deep groove ball bearing 5 ensures smooth rotation of the friction wheel one 1, the arrangement of the framework oil seal 7 ensures the tightness of the interior of the deep groove ball bearing 5, and the phenomenon that oil leakage of the deep groove ball bearing 5 cannot occur in long-time working.
Working principle: firstly, the right side of friction pulley 1 is provided with friction disc 9, the right side of friction disc 9 is provided with friction pulley two 8, when the motor in friction pulley 1 outside drives friction pulley two 1 and rotates, because the frictional force that friction pulley 9 provided, friction pulley two 8 also can follow and take place the rotation together, because B type square head key one 13 of skewed tooth axle 11 left end is located the inside recess of friction pulley two 8, so skewed tooth axle 11 also can take place the rotation, thereby drive the gear and rotate together, thereby reach the effect of lifting the heavy object, through the full metal lock nut 16 of tightening the extreme right side, skewed tooth axle 11 and stopper 12 can begin to move left, dish spring 10 can be compressed tightly gradually, the pressure of dish spring 10 to the friction pulley two 8 of left side also can gradually increase, the frictional force of friction pulley two 8 pairs friction disc 9 also can gradually increase, thereby can realize the function of adjustable moment, when full metal lock nut 16 adjusts the very tight state, friction pulley 9's frictional force is also the biggest, can be in the time when the friction pulley 1 is difficult to take place the heavy object, the heavy object is located the time, the heavy object is difficult to be taken place by the rotation through the friction pulley 1, the heavy object is realized, the heavy object is difficult to the side 1 is realized, the friction pulley 1 is rotated through the heavy object is realized, the heavy object is difficult to the rotation, the friction pulley 1 has been difficult to be had the condition when the friction pulley 1 has been rotated, and can be rotated down by the heavy object 1, and can be broken down, and can be easily by the friction pulley 1.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a frequency conversion chain electric block load friction safety device that skids, includes friction pulley one (1), its characterized in that: the inside hole (2) that is provided with of left end of friction pulley (1), the inside of hole (2) is provided with bolt fastening cover (3), the inside fixedly connected with of bolt fastening cover (3) is adjusted and is slipped bolt (4), the left end outside of adjusting and slipping bolt (4) is provided with deep groove ball bearing (5), deep groove ball bearing (5) left and right sides is provided with hole retainer ring (6), the right side of hole retainer ring (6) is provided with skeleton oil blanket (7), the right-hand friction pulley second (8) that is provided with of skeleton oil blanket (7), the intermediate position of friction pulley second (8) and friction pulley first (1) is provided with friction disc spring (10), the inside of disc spring (10) is provided with skewed tooth axle (11), the intermediate position in skewed tooth axle (11) outside is provided with stopper (12), the left end in the outside of skewed tooth axle (11) is provided with B type square head key (13), the right side of skewed tooth axle (11) is provided with full sleeve (15) in the outside, all right side (15) are provided with end sleeve (15).
2. The variable frequency endless chain electric hoist load friction slip safety arrangement of claim 1, characterized in that: the friction plate (9) is of an annular structure, and the friction plate (9) is movably connected with the first friction wheel (1) and the second friction wheel (8).
3. The variable frequency loop chain electric hoist load friction slip safety device according to claim 2, characterized in that: the disc spring (10) is positioned at the middle position of the friction wheel II (8) and the limiting block (12), and the outer diameter size of the limiting block (12) is larger than the size of a middle hole of the disc spring (10).
4. The variable frequency endless chain electric hoist load friction slip safety arrangement of claim 3, characterized in that: the first B-shaped square head key (13) is positioned in a groove in the second friction wheel (8), and the first B-shaped square head key (13) is matched with the groove in the second friction wheel (8).
5. The variable frequency loop chain electric block load friction slip safety device according to claim 4, wherein: the adjusting slipping bolt (4) is located at the innermost part of the whole structure, the adjusting slipping bolt (4) is movably connected with the helical gear shaft (11), and the adjusting slipping bolt (4) is in threaded connection with the all-metal locking nut (16).
6. The variable frequency loop chain electric block load friction slip safety device according to claim 5, wherein: the left end outside of skewed tooth axle (11) is provided with deep groove ball bearing (5) and skeleton oil blanket (7), be swing joint between skewed tooth axle (11) and deep groove ball bearing (5) and skeleton oil blanket (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222916480.9U CN220011972U (en) | 2022-10-30 | 2022-10-30 | Safety protection device for load friction and skid of variable-frequency loop chain electric hoist |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222916480.9U CN220011972U (en) | 2022-10-30 | 2022-10-30 | Safety protection device for load friction and skid of variable-frequency loop chain electric hoist |
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| Publication Number | Publication Date |
|---|---|
| CN220011972U true CN220011972U (en) | 2023-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222916480.9U Active CN220011972U (en) | 2022-10-30 | 2022-10-30 | Safety protection device for load friction and skid of variable-frequency loop chain electric hoist |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220011972U (en) |
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- 2022-10-30 CN CN202222916480.9U patent/CN220011972U/en active Active
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