CN203624986U - Chain fracture protection device for ascending and descending chain - Google Patents
Chain fracture protection device for ascending and descending chain Download PDFInfo
- Publication number
- CN203624986U CN203624986U CN201320790487.9U CN201320790487U CN203624986U CN 203624986 U CN203624986 U CN 203624986U CN 201320790487 U CN201320790487 U CN 201320790487U CN 203624986 U CN203624986 U CN 203624986U
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- Prior art keywords
- chain
- spring
- dwang
- ascending
- bay
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- Expired - Lifetime
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- 230000001174 ascending effect Effects 0.000 title abstract 9
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 15
- 239000010959 steel Substances 0.000 claims abstract description 15
- 230000003028 elevating effect Effects 0.000 claims description 7
- 230000006835 compression Effects 0.000 abstract 3
- 238000007906 compression Methods 0.000 abstract 3
- 238000005096 rolling process Methods 0.000 abstract 1
- 238000011084 recovery Methods 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000010338 mechanical breakdown Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 210000001138 tear Anatomy 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Forklifts And Lifting Vehicles (AREA)
Abstract
The utility model provides a chain fracture protection device for an ascending and descending chain. The chain fracture protection device comprises a steel sleeve, a pull rod, a first spring, a compression sleeve, an ascending and descending chain, a rotating rod, a second spring and a safe clamp, wherein the steel sleeve is welded on an ascending and descending table, the pull rod passes through the steel sleeve, the first spring and the pressing sleeve are arranged in the steel sleeve and are sheathed on the pull rod, the ascending and descending chain is respectively connected with the two ends of the pull rod through a chain connecting element, the rotating rod is connected with the ascending and descending table through a second pin and can rotate along the second pin shaft, the second spring is positioned under the rotating rod, the safe clamp is arranged on the ascending and descending table and is positioned under the middle part of the rotating rod, the upper end of the second spring is connected with the rotating rod, the lower end of the second spring is connected with a screw rod, the screw rod is connected with the ascending and descending table through a support plate, a rolling wheel and a pull rod of the safe clamp are connected into a whole with the rotating rod through a first pin shaft and can rotate around the second pin shaft, the lower end of the compression sleeve is tightly leaned on the upper surface of the rotating rod, the first spring is a compression spring, and the second spring is a tension spring. The chain fracture protection device has the advantages that the structure is simple, the performance is stable and reliable, and the chain looseness and chain fracture protection can be realized on the ascending and descending chain.
Description
Technical field
The utility model belongs to Machine guarding technical field of structures, is specifically related to a kind of device that lifting chain is carried out to loose chain, chain rupture protection.
Background technology
At present; a lot of bay-lifts are all to carry out cargo lifting by the reciprocal dipping and heaving of lifting chain; cause chain lax because mechanical breakdown makes bay-lift be stuck on column or bay-lift descending speed is out of control sometimes; or chain weares and teares for a long time, corrodes; and cause chain to rupture; produce above-mentioned phenomenon as shut down serious machine injury accident will occur not in time, cause casualties or device damage so that scrap.
Summary of the invention
The purpose of this utility model is to solve the potential safety hazard that prior art equipment exists, and provides a kind of simple in structure, stable performance, reliable, the device that can carry out to lifting chain loose chain, chain rupture protection.
The purpose of this utility model is achieved through the following technical solutions:
A chain breakage protection device for lifting chain, includes the steel bushing being welded on bay-lift, the pull bar that passes steel bushing, is arranged in steel bushing and is sleeved on the first spring and the clamping sleeve on pull bar, is connected to the elevating chain at pull bar two ends by chain fitting; The dwang that is connected with bay-lift by the second bearing pin and can rotates along the second bearing pin, be positioned at the second spring of dwang below, is arranged on bay-lift and is positioned at the safety tongs of below, dwang middle part; The second spring upper end is connected with dwang, lower end connecting screw rod, and screw rod is connected with bay-lift by support plate; The pull bar of safety tongs and roller link into an integrated entity by the first bearing pin and dwang and can be around the second bearing pin rotations; Clamping sleeve lower end is near dwang upper surface; Described the first spring is Compress Spring, and the second spring is extension spring.
The utility model on bay-lift, be positioned at dwang above limit switch is installed.
Elevating chain of the present utility model connects into a closed loop lifting chain by pull bar, chain fitting and bay-lift, when bay-lift is between column during along the normal lifting of guide rail, the chain tension of tensioning is enough to overcome the elastic force of the first spring, makes the first spring application on bay-lift.When bay-lift causes chain slack or chain that fracture occurs on column because fault is stuck in, the elastic force of the first spring is greater than the tension force of chain, compressed the first spring discharges, and extruding is contained in the clamping sleeve in steel bushing downwards, compress casing pressure and dwang, dwang is around the second bearing pin rotation being connected with bay-lift, impel roller in the safety tongs being connected with dwang by the first bearing pin along a camber line upward movement, the gap of roller and guide rail is more and more less, the final friction force that relies on roller and guide rail causes bay-lift to be locked on guide rail, thereby realize the loose chain of lifting chain, chain rupture protection.The second spring can make dwang in the time that equipment normally moves, keep balance, and in enforcement protection process, has the function that reduces impact and the normal rear dwang reset of chain recovery, the Tensity size of adjustable the second spring of screw rod.
The utility model is also provided with the limit switch that carries out loose chain, chain rupture detection alarm.In the time there is loose chain, chain rupture, dwang touches limit switch when rotation, causes equipment alarm to be shut down, thereby realizes double protection functions.
The utility model arranges in bay-lift bilateral symmetry, can realize loose chain, the chain rupture protection of lifting chain, and it is simple in structure, and stable performance, reliable also can avoid implementing the greater impact that protection brings simultaneously.
Accompanying drawing explanation
Fig. 1 is front view of the present utility model;
Fig. 2 is left view of the present utility model;
Fig. 3 is the A-A section drawing of Fig. 1.
In figure, 1-clamping sleeve; The 2-the first spring; 3-elevating chain; 4-pull bar; 5-chain fitting; 6-dwang; 7-safety tongs; 7a-pull bar; 7b-roller; 8-limit switch; 9-bay-lift; The 10-the second spring; 11-screw rod; 12-support plate; 13-guide rail; 14-column; 15-steel bushing; The 16-the first bearing pin; The 17-the second bearing pin.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is further described, but the utility model is not limited to shown in accompanying drawing.
As shown in Figure 1, Figure 2 and Figure 3, the utility model forms a closed loop lifting chain for promoting bay-lift by clamping sleeve 1, the first spring 2, elevating chain 3, pull bar 4, chain fitting 5 with bay-lift 9; Bay-lift is along guide rail 13 up-and-down movements, and rail welding is on column 14.Whole fender guard includes the steel bushing 15 being welded on bay-lift, the pull bar 4 that passes steel bushing, is arranged in steel bushing and is sleeved on the first spring 2 and the clamping sleeve 1 on pull bar, is connected to the elevating chain 3 at pull bar two ends by chain fitting 5; The dwang 6 that is connected with bay-lift 9 by the second bearing pin 17 and can rotates along the second bearing pin, be installed on bay-lift and be positioned at the limit switch 8 of dwang top, be positioned at the second spring 10 of dwang below, be arranged on bay-lift and be positioned at the safety tongs 7 of below, dwang middle part; The second spring upper end is connected with dwang, lower end connecting screw rod 11, and screw rod is connected with bay-lift by support plate 12; The pull bar 7a of safety tongs and roller 7b link into an integrated entity with dwang by the first bearing pin 16 and can be around the second bearing pin rotations; Clamping sleeve 1 lower end is near dwang upper surface; The first spring is Compress Spring, and the second spring is extension spring.
The pull bar of the utility model safety tongs is fixed in the middle of dwang by the first bearing pin 16, and there is roller pull bar bottom, and in the time that dwang rotates, pull bar and roller, along with rotation, cause roller along camber line upward movement; As shown in Figure 3, in the time that elevating chain lifting bay-lift normally moves, the groove of safety tongs ensures enough gaps and slides up and down along guide rail, is unlikely to be stuck on guide rail.
Principle of work of the present utility model is as follows: in the time that loose chain or chain rupture appear in elevating chain 3; compressed the first spring 2 moves downward promotion clamping sleeve 1; clamping sleeve extruding dwang 6; thereby dwang rotates around the second bearing pin 17; roller 7b in safety tongs 7 is along a camber line upward movement; when dwang rotates to certain angle; roller finally pushes guide rail 13; rely on roller and guide rail enough large friction force make bay-lift stop motion and be fixed on column 14, thereby realize loose chain and chain rupture is protected.Be provided with limit switch 8 in upper end, dwang turning point distally, at once touch limit switch when dwang rotates at the beginning, cause the equipment shutdown of reporting to the police immediately, thereby realize the double protection functions of equipment.The second spring 10 of installing in lower end, dwang turning point distally, in the time that normally moving, plays equipment the effect of balanced rotation bar, when slowing down the velocity of rotation of dwang after chain breakage, thereby reduce the impact to equipment, the second spring also has the function that the normal rear dwang of chain recovery resets simultaneously.The Tensity size of adjustable the second spring of screw rod 11.
The utility model two cover is symmetricly set in bay-lift both sides, no matter is that bay-lift left side chain breaks, or right side chain breaks, or both sides chain breaks simultaneously, all can realize defencive function, guarantees stability, the reliability of equipment performance.
Claims (2)
1. the chain breakage protection device of a lifting chain, it is characterized in that, include the steel bushing (15) being welded on bay-lift (9), the pull bar (4) that passes steel bushing, be arranged in steel bushing and be sleeved on the first spring (2) and the clamping sleeve (1) on pull bar, being connected to the elevating chain (3) at pull bar two ends by chain fitting (5); The dwang (6) that is connected with bay-lift (9) by the second bearing pin (17) and can rotates along the second bearing pin, be positioned at second spring (10) of dwang below, is arranged on bay-lift and is positioned at the safety tongs (7) of below, dwang middle part; The second spring upper end is connected with dwang, lower end connecting screw rod (11), and screw rod is connected with bay-lift by support plate (12); The pull bar (7a) of safety tongs and roller (7b) link into an integrated entity by the first bearing pin (16) and dwang and can be around the second bearing pin rotations; Clamping sleeve (1) lower end is near dwang upper surface; Described the first spring is Compress Spring, and the second spring is extension spring.
2. the chain breakage protection device of a kind of lifting chain according to claim 1, is characterized in that, on bay-lift, be positioned at dwang above limit switch (8) is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320790487.9U CN203624986U (en) | 2013-12-05 | 2013-12-05 | Chain fracture protection device for ascending and descending chain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320790487.9U CN203624986U (en) | 2013-12-05 | 2013-12-05 | Chain fracture protection device for ascending and descending chain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203624986U true CN203624986U (en) | 2014-06-04 |
Family
ID=50811479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320790487.9U Expired - Lifetime CN203624986U (en) | 2013-12-05 | 2013-12-05 | Chain fracture protection device for ascending and descending chain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203624986U (en) |
-
2013
- 2013-12-05 CN CN201320790487.9U patent/CN203624986U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 650051 people middle road, Panlong District, Kunming, Yunnan Province, No. 6 Patentee after: YUNNAN KSEC DESIGN RESEARCH INSTITUTE Co.,Ltd. Address before: No. 6 people middle road, Kunming, Yunnan Province, Yunnan:Kunchuan building Yunnan Kunchuan Design & Research Institute Patentee before: YUNNAN KSEC DESIGN AND RESEARCH INSTITUTE |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180910 Address after: 650000 401 building, kunhai Industrial Zone, Kunming economic and Technological Development Zone, Yunnan Patentee after: KUNMING KSEC LOGISTIC INFORMATION INDUSTRY Co.,Ltd. Address before: 650051 people middle road, Panlong District, Kunming, Yunnan Province, No. 6 Patentee before: YUNNAN KSEC DESIGN RESEARCH INSTITUTE Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Building 401, Kunchuan Industrial Zone, Guandu District, Kunming City, Yunnan Province Patentee after: Kunchuan Intelligent Technology Co.,Ltd. Address before: 650000 401 building, kunhai Industrial Zone, Kunming economic and Technological Development Zone, Yunnan Patentee before: KUNMING KSEC LOGISTIC INFORMATION INDUSTRY Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140604 |