CN213505723U - Overweight protection device of chain block - Google Patents
Overweight protection device of chain block Download PDFInfo
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- CN213505723U CN213505723U CN202022712907.4U CN202022712907U CN213505723U CN 213505723 U CN213505723 U CN 213505723U CN 202022712907 U CN202022712907 U CN 202022712907U CN 213505723 U CN213505723 U CN 213505723U
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- protection device
- chain block
- mounting groove
- outer end
- overweight
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Abstract
The utility model discloses a chain block's overweight protection device, including hand sprocket and protection device, protection device sets up in the inside of hand sprocket, the inside of hand sprocket is conical structure with protection device's outer end, and the central axis coincidence, be provided with first screw thread on the hand sprocket, the last mounting groove that is provided with of protection device, subtract heavy recess and protection platform, the protection platform sets up in the outer end that subtracts heavy recess, subtract heavy recess and set up in mounting groove's outer end, the transmission shaft is worn to be equipped with at mounting groove's center, the transmission shaft sets up on chain block, subtract and be provided with a plurality of lightening hole on the heavy recess, protection device's side is provided with the second screw thread, second screw thread and first threaded connection, protection device's bottom is provided with distance sensor. The utility model adopts the above structure an overweight protection device of chain block can adapt to different chain block's limit for weight value through adjusting the precession degree of depth, simple structure, and is with low costs, and work efficiency is high.
Description
Technical Field
The utility model belongs to the technical field of overweight protection device technique and specifically relates to an overweight protection device of chain block is related to.
Background
The chain block is also called chain block, is suitable for the production and construction of factories, miners, agriculture, electric power and buildings, cargo hoisting, vehicle loading and unloading and the like, and particularly has important functions for open-air and powerless operation. The common chain block overweight protection device is not adjustable and has no universality, namely, the device can not adapt to the weight limit values of different chain blocks, has a complex structure, is not easy to install, causes high cost and low working efficiency, and simultaneously increases the installation cost of workers.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a chain block's overweight protection device can adapt to different chain block's limit for weight value through adjusting the precession degree of depth, simple structure, and is with low costs, and work efficiency is high.
In order to achieve the purpose, the utility model provides an overweight protection device of a chain block, which comprises a hand chain wheel and a protection device, wherein the protection device is arranged inside the hand chain wheel, the inside of the hand chain wheel and the outer end of the protection device are both in a conical structure, the central axes of the hand chain wheel and the protection device are coincided, and the hand chain wheel is provided with a first thread;
the protection device is provided with a mounting groove, a weight reduction groove and a protection platform, the protection platform is arranged at the outer end of the weight reduction groove, the weight reduction groove is arranged at the outer end of the mounting groove, a transmission shaft is arranged in the center of the mounting groove in a penetrating mode, the transmission shaft is arranged on the chain block, a plurality of weight reduction holes are formed in the weight reduction groove, second threads are arranged at the outer end of the protection device and connected with the first threads, and a distance sensor is arranged at the bottom end of the protection device.
Preferably, the front end of the protection platform is higher than the front end of the weight reduction groove, the front end of the weight reduction groove is higher than the front end of the mounting groove, and the front end of the mounting groove is higher than the front end of the transmission shaft.
Preferably, the mounting groove is provided with a first reinforcing rib with a circular structure.
Preferably, the hand chain wheel is provided with a second reinforcing rib with a conical structure and a third reinforcing rib with a circular structure, the third reinforcing rib is arranged at the inner end of the second reinforcing rib, and the outer end of the hand chain wheel is arranged to be of a cylindrical structure.
Preferably, the mounting groove is in threaded connection with the transmission shaft.
Preferably, the distance sensor is an optical distance sensor.
Therefore, the utility model adopts the above structure an overweight protection device of chain block can adapt to different chain block's limit for weight value through adjusting the precession degree of depth, simple structure, and is with low costs, and work efficiency is high.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural view of an embodiment of an overweight protection device of a chain block of the present invention;
fig. 2 is a cross sectional view of an embodiment of the overweight protection device of the chain block of the present invention;
wherein 1: a hand sprocket; 2: a protection device; 3: installing a groove; 4: a weight-reducing groove; 5: a protection table; 6: a drive shaft; 7: lightening holes; 8: a first reinforcing rib; 9: a second reinforcing rib; 10: and a third reinforcing rib.
Detailed Description
The technical solution of the present invention is further explained by the accompanying drawings and examples.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
Examples
The utility model provides a chain block's overweight protection device, including hand sprocket 1 and protection device 2, protection device 2 sets up in the inside of hand sprocket 1, and the outside of 1 inside and protection device 2 of hand sprocket is conical structure, and the coincidence of the central axis, is provided with first screw thread on the hand sprocket 1.
The protection device 2 is provided with an installation groove 3, a weight reduction groove 4 and a protection table 5, the protection table 5 is arranged at the outer end of the weight reduction groove 4, the weight reduction groove 4 is arranged at the outer end of the installation groove 3, a transmission shaft 6 penetrates through the center of the installation groove 3, the transmission shaft 6 is arranged on the chain block, a plurality of weight reduction holes 7 are formed in the weight reduction groove 4, the front end of the protection table 5 is higher than the front end of the weight reduction groove 4, the front end of the weight reduction groove 4 is higher than the front end of the installation groove 3, the front end of the installation groove 3 is higher than the front end of the transmission shaft 6, and the ring rings are buckled with one-level protection, so that the transmission is more stable. The outer end of the protection device 2 is provided with a second thread, the second thread is connected with the first thread, and the bottom end of the protection device 2 is provided with an optical distance sensor. The first reinforcing ribs 8 of the circular structure are arranged on the mounting grooves 3, so that the connection strength of the mounting grooves 3 and the transmission shaft 6 is increased. The hand sprocket 1 is provided with the second strengthening rib 9 of conical structure and the third strengthening rib 10 of circular structure, and third strengthening rib 10 sets up in the inner of second strengthening rib 9, and the outer end of hand sprocket 1 sets up to cylindrical structure, simple to operate, and second strengthening rib 9 and third strengthening rib 10 are all in order to increase the intensity of hand sprocket 1 itself. The mounting groove 3 is in threaded connection with the transmission shaft 6, and transmission is stable and simple. Learn through a large amount of experiments, the maximum friction value of each inboard position of protection device 2 precession hand sprocket 1 is the biggest weight value that the restriction promoted promptly, and the precession is more inside, and the weight value of restriction is big more to the restriction volume that the chain block that adapts to the difference corresponds.
When in work, the protection device is screwed into the hand chain wheel under the condition that the weight value limited by the chain block is known, the precession position can be known by measuring the distance between the bottom end of the protection device and the bottom end of the hand chain wheel through an optical distance sensor, the position corresponds to the limited weight value of the chain block, the hand chain wheel is installed on the transmission shaft after being adjusted, and is finally installed on the chain block, then the hand chain is pulled, the chain drives the hand chain wheel to rotate, the hand chain wheel is connected with the second thread through the first thread to transmit power, so that the installation groove drives the transmission shaft to rotate, the transmission shaft lifts the heavy object through a friction plate, a ratchet wheel, a brake, a lifting chain and the like on the transmission shaft, if the weight of the chain block exceeds the limit weight, the protection device does not rotate along with the hand chain wheel, the hand chain wheel idles on the protection device, and the heavy object cannot be lifted, so that the chain block is protected from being damaged.
Therefore, the utility model adopts the above structure an overweight protection device of chain block can adapt to different chain block's limit for weight value through adjusting the precession degree of depth, simple structure, and is with low costs, and work efficiency is high.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the preferred embodiments, those skilled in the art should understand that: the technical solution of the present invention can still be modified or replaced by other equivalent means, and the modified technical solution can not be separated from the spirit and scope of the technical solution of the present invention.
Claims (6)
1. An overweight protection device of chain block which characterized in that:
the protective device is arranged inside the hand chain wheel, the inside of the hand chain wheel and the outer end of the protective device are both in a conical structure, the central axes of the hand chain wheel and the outer end of the protective device are coincident, and first threads are arranged on the hand chain wheel;
the protection device is provided with a mounting groove, a weight reduction groove and a protection platform, the protection platform is arranged at the outer end of the weight reduction groove, the weight reduction groove is arranged at the outer end of the mounting groove, a transmission shaft is arranged in the center of the mounting groove in a penetrating mode, the transmission shaft is arranged on the chain block, a plurality of weight reduction holes are formed in the weight reduction groove, second threads are arranged at the outer end of the protection device and connected with the first threads, and a distance sensor is arranged at the bottom end of the protection device.
2. The overweight protection device of chain block of claim 1, wherein: the front end of the protection platform is higher than the front end of the weight reduction groove, the front end of the weight reduction groove is higher than the front end of the mounting groove, and the front end of the mounting groove is higher than the front end of the transmission shaft.
3. The overweight protection device of chain block of claim 2, wherein: and a first reinforcing rib with a circular structure is arranged on the mounting groove.
4. An overweight protection device of chain block as claimed in claim 3, characterized in that: the hand chain wheel is provided with a second reinforcing rib with a conical structure and a third reinforcing rib with a circular structure, the third reinforcing rib is arranged at the inner end of the second reinforcing rib, and the outer end of the hand chain wheel is arranged to be of a cylindrical structure.
5. The overweight protection device of chain block of claim 4, wherein: the mounting groove is in threaded connection with the transmission shaft.
6. The overweight protection device of chain block of claim 5, wherein: the distance sensor is an optical distance sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022712907.4U CN213505723U (en) | 2020-11-20 | 2020-11-20 | Overweight protection device of chain block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022712907.4U CN213505723U (en) | 2020-11-20 | 2020-11-20 | Overweight protection device of chain block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213505723U true CN213505723U (en) | 2021-06-22 |
Family
ID=76424858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022712907.4U Active CN213505723U (en) | 2020-11-20 | 2020-11-20 | Overweight protection device of chain block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213505723U (en) |
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2020
- 2020-11-20 CN CN202022712907.4U patent/CN213505723U/en active Active
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