CN112239172A - Aluminum alloy chain block with load limiting function - Google Patents
Aluminum alloy chain block with load limiting function Download PDFInfo
- Publication number
- CN112239172A CN112239172A CN202011227684.0A CN202011227684A CN112239172A CN 112239172 A CN112239172 A CN 112239172A CN 202011227684 A CN202011227684 A CN 202011227684A CN 112239172 A CN112239172 A CN 112239172A
- Authority
- CN
- China
- Prior art keywords
- gear
- limit
- load limiting
- seat
- year
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D3/00—Portable or mobile lifting or hauling appliances
- B66D3/12—Chain or like hand-operated tackles with or without power transmission gearing between operating member and lifting rope, chain or cable
- B66D3/16—Chain or like hand-operated tackles with or without power transmission gearing between operating member and lifting rope, chain or cable operated by an endless chain passing over a pulley or a sprocket
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/54—Safety gear
- B66D1/58—Safety gear responsive to excess of load
Abstract
The invention discloses an aluminum alloy chain block with a load limiting function, which comprises a shell, wherein a first fixing plate and a second fixing plate are arranged in the shell, a long toothed shaft penetrates through a central hole of the first fixing plate and a central hole of the second fixing plate, one end of the long toothed shaft is provided with a first gear, the other end of the long toothed shaft is provided with a spline, the first gear is connected with a sheet gear set positioned on a first housing, the spline is connected with a brake assembly, the long toothed shaft is also provided with a hoisting chain wheel positioned between the first gear and the brake assembly, one end of the hoisting chain wheel is provided with a second gear connected with the sheet gear set, the hoisting chain wheel is provided with a first convex groove and a second convex groove which are respectively and correspondingly arranged with the first fixing plate and the second fixing plate, a hoisting chain positioned between the first convex groove and the second convex groove is wound on the hoisting chain wheel, and the tail end of the hoisting chain is provided with a. The aluminum alloy chain block with the load limiting function, which adopts the structure, has the advantages of high safety, compact structure, small volume and convenience in carrying.
Description
Technical Field
The invention relates to the technical field of chain blocks, in particular to an aluminum alloy chain block with a load limiting function.
Background
The chain block is also called a fairy block, a chain block, a manual block, is a manual hoisting machine which is simple to use and convenient to carry, and is also called a 'ring chain block' or a 'chain block'. If the object hung by the chain block is overweight in the use process, the chain block can be damaged destructively, and the chain block can be broken due to the fact that a hoisting chain reaches the limit in the serious condition, so that the safety of operating personnel is greatly threatened, and therefore a load limiting function needs to be added to the chain block.
Disclosure of Invention
The invention aims to provide an aluminum alloy chain block with a load limiting function, which has the advantages of high safety, compact structure, small volume and portability.
In order to achieve the purpose, the invention provides an aluminum alloy chain block with a load limiting function, which comprises a shell, wherein one end of the shell is provided with a first cover shell, the other end of the shell is provided with a second cover shell, the top of the shell is provided with an upper hook assembly, a first fixing plate and a second fixing plate which are connected with the inner wall of the shell are arranged in the shell, the first fixing plate and the second fixing plate are arranged in parallel, a long toothed shaft penetrates through a central hole of the first fixing plate and the second fixing plate, one end of the long toothed shaft is provided with a first gear, the other end of the long toothed shaft is provided with a spline, the first gear is connected with a sheet gear set positioned on the first cover shell, the spline is connected with a brake assembly, a hoisting chain wheel positioned between the first gear and the brake assembly is further arranged on the long toothed shaft, one end of the hoisting chain wheel is provided with a second gear connected with the sheet gear set, the lifting chain wheel is provided with a first convex groove and a second convex groove which are respectively arranged correspondingly to the first fixing plate and the second fixing plate, the lifting chain wheel is provided with a lifting chain which is positioned between the first convex groove and the second convex groove in a winding manner, and the tail end of the lifting chain is provided with a lower lifting hook.
Preferably, the plate gear set comprises a first plate gear and a second plate gear which are symmetrically arranged at two ends of the first gear, the first plate gear and the second plate gear are meshed with the first gear, a short shaft is arranged in the middle of one side face, close to the long gear shaft, of the first plate gear and the second plate gear, and the short shaft is meshed with the second gear.
Preferably, the brake assembly include with the adjacent stopper seat that sets up of jack-up sprocket, the hole department of stopper seat be equipped with spline structure assorted recess, be equipped with first friction disc, ratchet, second friction disc and limit on the stopper seat in proper order and carry the seat, limit on carry the seat with stopper seat threaded connection, limit is carried the seat and is stretched out the one end and the limit of stopper seat are carried the dog and are connected, limit carry the dog with spline meshing is connected, be equipped with on the spline with the spring rand of limit on carry the dog butt.
Preferably, the load limiting seat is sequentially sleeved with a load limiting pressing sheet, a load limiting spring and a load limiting adjusting nut, the load limiting adjusting nut is in threaded connection with the load limiting seat, the load limiting pressing sheet and the outer side of the load limiting spring are sleeved with a hand-pulling chain wheel connected with the load limiting pressing sheet, the load limiting seat is provided with load limiting grooves which are uniformly distributed on a contact surface of the load limiting pressing sheet, openings of the load limiting grooves are gradually increased, lugs matched with the load limiting groove structures are arranged on the outer edge of the load limiting pressing sheet, the number of the lugs is half of the number of the load limiting grooves, two adjacent lugs form connecting grooves of the load limiting pressing sheet, one end of the hand-pulling chain wheel is provided with a connecting block corresponding to the connecting grooves, and a hand-pulling chain is sleeved on the hand-pulling chain wheel.
Preferably, the upper hook assembly comprises an upper hook shaft located on the outer wall of the housing, and the upper hook shaft is connected with the upper hook through a shaft sleeve.
Therefore, the aluminum alloy chain block with the load limiting function, which adopts the structure, has the advantages of high safety, compact structure, small volume and portability.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a schematic view of an embodiment of an aluminum alloy chain block with load limiting function according to the present invention;
fig. 2 is a schematic view of an embodiment of a load limiting seat in the aluminum alloy chain block with a load limiting function according to the invention.
Reference numerals
1. A housing; 2. a first housing; 3. a second housing; 4. an upper hook shaft; 5. an upper hook; 6. a first fixing plate; 7. a second fixing plate; 8. a long pinion shaft; 9. a first gear; 10. a spline; 11. a hoisting sprocket; 12. a second gear; 13. a hoisting chain; 14. a lower hook; 15. a second plate gear; 16. a minor axis; 17. a brake seat; 18. a ratchet wheel; 19. a load limiting seat; 20. a load limiting stop block; 21. limiting the load and pressing the sheet; 22. a load limiting spring; 23. a chain wheel is pulled by hand; 24. pulling a chain by hand; 25. a load limiting groove; 26. a bump; 27. and a load limiting adjusting nut.
Detailed Description
Embodiments of the present invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic view of an embodiment of an aluminum alloy chain block with a load limiting function, and fig. 2 is a schematic view of an embodiment of a load limiting seat in the aluminum alloy chain block with the load limiting function, as shown in the figure, the aluminum alloy chain block with the load limiting function comprises a shell 1, wherein a first housing 2 is arranged at one end of the shell 1, a second housing 3 is arranged at the other end of the shell 1, and the shell 1 is conveniently opened by the first housing 2 and the second housing 3, so that the chain block can be conveniently inspected and maintained. The top of casing 1 is equipped with lifting hook 5 subassembly, goes up lifting hook 5 subassembly including being located the last hook shaft 4 on the 1 outer wall of casing, goes up hook shaft 4 and is connected with last lifting hook 5 through the axle sleeve, goes up lifting hook 5 and conveniently fixes chain block. The inner wall of the shell 1 is provided with a first fixing plate 6 and a second fixing plate 7 which are connected with the inner wall of the shell 1, the first fixing plate 6 and the second fixing plate 7 are arranged in parallel, a long toothed shaft 8 penetrates through the central holes of the first fixing plate 6 and the second fixing plate 7, and the first fixing plate 6 and the second fixing plate 7 are used for horizontally fixing the long toothed shaft 8 in the shell 1.
One end of the long gear shaft 8 is provided with a first gear 9, the first gear 9 is connected with a sheet gear set arranged on the first housing 2, the other end of the long gear shaft 8 is provided with a spline 10, the spline 10 is connected with a brake assembly, the long gear shaft 8 is further provided with a hoisting chain wheel 11 arranged between the first gear 9 and the brake assembly, and one end of the hoisting chain wheel 11 is provided with a second gear 12 connected with the sheet gear set. Power on the brake assembly is transmitted to the long gear shaft 8 through the spline 10, the long gear shaft 8 transmits the power to the sheet gear set through the first gear 9, and the sheet gear set transmits the power to the hoisting chain wheel 11 through the second gear 12, so that the lifting of heavy objects is realized.
The hoisting chain wheel 11 is provided with a first convex groove and a second convex groove which are respectively arranged corresponding to the first fixing plate 6 and the second fixing plate 7, and the first convex groove and the second convex groove are used for connecting the first fixing plate 6 and the second fixing plate 7, so that the position of the hoisting chain wheel 11 on the long gear shaft 8 is fixed. A lifting chain 13 positioned between the first convex groove and the second convex groove is wound on the lifting chain wheel 11, a lower hook 14 is arranged at the tail end of the lifting chain 13, and the lower hook 14 is used for connecting a heavy object.
The plate gear set comprises a first plate gear and a second plate gear 15 which are symmetrically arranged at two ends of the first gear 9, the first plate gear and the second plate gear 15 are meshed with the first gear 9, a short shaft 16 is arranged in the middle of one side face, close to the long tooth shaft 8, of the first plate gear and the second plate gear 15, the short shaft 16 is meshed with the second gear 12, power on the long tooth shaft 8 is transmitted to the first plate gear and the second plate gear 15, and then the power is transmitted to the second gear 12 through the short shaft 16 on the first plate gear and the second plate gear 15.
The brake assembly comprises a brake seat 17 which is arranged adjacent to the hoisting chain wheel 11, a groove which is matched with the spline 10 in structure is arranged at the inner hole of the brake seat 17, a first friction plate, a ratchet wheel 18, a second friction plate and a load limiting seat 19 are sequentially arranged on the brake seat 17, and the ratchet wheel 18 plays a role in braking and can prevent a heavy object from sliding downwards after the heavy object is lifted. The load limiting seat 19 is in threaded connection with the brake seat 17, one end, extending out of the brake seat 17, of the load limiting seat 19 is connected with the load limiting stop 20, the load limiting stop 20 is in meshed connection with the spline 10, and the load limiting stop 20 is used for preventing subsequent heavy object descending difficulty caused by locking of threads between the load limiting seat 19 and the brake seat 17 in the heavy object lifting process. The spline 10 is provided with a spring collar abutted against the load limiting stop 20, and the spring collar is used for limiting the load limiting stop 20 and the load limiting seat 19 and preventing the load limiting seat 19 from falling off the brake seat 17 when the load limiting seat 19 is separated from the second friction plate.
The load limiting base 19 is sequentially sleeved with a load limiting pressing piece 21, a load limiting spring 22 and a load limiting adjusting nut 27, the load limiting adjusting nut 27 is in threaded connection with the load limiting base 19, and the load limiting adjusting nut 27 is used for pressing the load limiting spring 22 tightly so as to tightly press the load limiting pressing piece 21 on the load limiting base 19. And hand-pulling chain wheels 23 connected with the load limiting pressing sheets 21 are arranged on the outer sides of the load limiting pressing sheets 21 and the load limiting springs 22, and hand-pulling chains 24 are sleeved on the hand-pulling chain wheels 23. Load limiting grooves 25 which are uniformly distributed are formed in the contact surface of the load limiting seat 19 and the load limiting pressing piece 21, the opening of each load limiting groove 25 is gradually enlarged, convex blocks 26 which are matched with the load limiting grooves 25 in structure are arranged on the outer edge of each load limiting pressing piece 21, and the number of the convex blocks 26 is half of the number of the load limiting grooves 25. The breach between two adjacent lugs 26 forms the spread groove of limit for tonnage preforming 21, and the one end of hand power sprocket 23 is equipped with the connecting block that corresponds the setting with the spread groove, and the cooperation of connecting block and spread groove is used and is realized hand power sprocket 23 and limit for tonnage preforming 21's being connected.
During lifting, the hand chain 24 is pulled to drive the hand chain wheel 23 to rotate, the rotating power on the hand chain wheel 23 is transmitted to the load limiting pressing sheet 21, the load limiting pressing sheet 21 drives the load limiting seat 19 to rotate, the power on the load limiting seat 19 is transmitted to the brake seat 17, the power on the brake seat 17 is transmitted to the long toothed shaft 8 through the spline 10, the power on the long toothed shaft 8 is transmitted to the plate gear set through the first gear 9, the power on the plate gear set is transmitted to the second gear 12, the power on the second gear 12 is transmitted to the lifting chain wheel 11, and lifting of heavy objects is achieved. When the object is overweight, the connecting block on the chain wheel 23 pushes the lug 26 on the load limiting pressing sheet 21, so that the lug 26 is separated from the load limiting groove 25 on the load limiting seat 19, the power transmission of the load limiting pressing sheet 21 to the load limiting seat 19 is interrupted, the heavy object cannot be lifted, the condition that the lifting chain 13 is broken due to the fact that the lifting chain reaches the limit is effectively avoided, the personal safety of operating personnel is guaranteed, and the safety of the chain block is improved.
Therefore, the aluminum alloy chain block with the load limiting function, which adopts the structure, has the advantages of high safety, compact structure, small volume and portability.
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 of ordinary skill in the art should understand that: modifications and equivalents may be made to the invention without departing from the spirit and scope of the invention.
Claims (5)
1. The utility model provides an aluminum alloy chain block with limit for tonnage function which characterized in that: the brake device comprises a housin, the one end of casing is equipped with first housing, the other end of casing is equipped with the second housing, the top of casing is equipped with the lifting hook subassembly, be equipped with in the casing with first fixed plate and second fixed plate that the inner wall of casing is connected, first fixed plate with second fixed plate parallel arrangement, first fixed plate with the long tooth axle wears to be equipped with in the centre bore of second fixed plate, the one end of long tooth axle is equipped with first gear, the other end of long tooth axle is equipped with the spline, first gear with be located piece gear group on the first housing is connected, the spline is connected with the braking component, the epaxial position that still is equipped with of long tooth first gear with hoisting sprocket between the braking component, hoisting sprocket's one end be equipped with the second gear of piece gear group connection, be equipped with on the hoisting sprocket with first fixed plate with the second fixed plate corresponds first tongue and the second fixed plate that set up respectively The lifting chain wheel is provided with a lifting chain between the first convex groove and the second convex groove in a winding mode, and the tail end of the lifting chain is provided with a lower lifting hook.
2. The aluminum alloy chain block with the load limiting function of claim 1, wherein: the sheet gear set comprises a first sheet gear and a second sheet gear which are symmetrically arranged at two ends of the first gear, the first sheet gear and the second sheet gear are meshed with the first gear, a short shaft is arranged at the middle part of one side face, close to the long gear shaft, of the first sheet gear and the second sheet gear, and the short shaft is meshed with the second gear.
3. The aluminum alloy chain block with the load limiting function of claim 2, wherein: the brake assembly include with the adjacent stopper seat that sets up of jack-up sprocket, the hole department of stopper seat be equipped with spline structure assorted recess, it carries the seat to be equipped with first friction disc, ratchet, second friction disc and limit in proper order on the stopper seat, limit carry the seat with stopper seat threaded connection, limit is carried the seat and is stretched out the one end and the limit of stopper seat are carried the dog and are connected, limit carry the dog with spline meshing is connected, be equipped with on the spline with the spring rand of limit year dog butt.
4. The aluminum alloy chain block with the load limiting function of claim 3, wherein: the limit carries the seat and goes up in proper order the cover and be equipped with limit year preforming, limit year spring and limit year adjusting nut, limit year adjusting nut with limit year seat threaded connection, limit year preforming with the outside cover of limit year spring be equipped with the hand power sprocket that limit year preforming is connected, limit carry the seat with be equipped with evenly distributed's limit year groove on the contact surface of limit year preforming, the opening in limit year groove increases gradually, limit year the outer edge of preforming be equipped with limit year groove structure assorted lug, just the quantity of lug is the half of limit year groove quantity, adjacent two breach formation between the lug the spread groove of limit year preforming, the one end of hand power sprocket be equipped with the spread groove corresponds the connecting block that sets up, the cover is equipped with hand power chain on the hand power sprocket.
5. The aluminum alloy chain block with the load limiting function of claim 4, wherein: the upper lifting hook assembly comprises an upper hook shaft positioned on the outer wall of the shell, and the upper hook shaft is connected with the upper lifting hook through a shaft sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011227684.0A CN112239172A (en) | 2020-11-06 | 2020-11-06 | Aluminum alloy chain block with load limiting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011227684.0A CN112239172A (en) | 2020-11-06 | 2020-11-06 | Aluminum alloy chain block with load limiting function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112239172A true CN112239172A (en) | 2021-01-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011227684.0A Pending CN112239172A (en) | 2020-11-06 | 2020-11-06 | Aluminum alloy chain block with load limiting function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112239172A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112960581A (en) * | 2021-04-14 | 2021-06-15 | 浙江双鸟机械有限公司 | Chain block |
-
2020
- 2020-11-06 CN CN202011227684.0A patent/CN112239172A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112960581A (en) * | 2021-04-14 | 2021-06-15 | 浙江双鸟机械有限公司 | Chain block |
| CN112960581B (en) * | 2021-04-14 | 2022-05-31 | 浙江双鸟机械有限公司 | Chain block |
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