CN2630213Y - Overload protector for building construction lifter - Google Patents
Overload protector for building construction lifter Download PDFInfo
- Publication number
- CN2630213Y CN2630213Y CN 03226342 CN03226342U CN2630213Y CN 2630213 Y CN2630213 Y CN 2630213Y CN 03226342 CN03226342 CN 03226342 CN 03226342 U CN03226342 U CN 03226342U CN 2630213 Y CN2630213 Y CN 2630213Y
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- CN
- China
- Prior art keywords
- spring
- set screw
- slide block
- fixed
- link plate
- 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.)
- Expired - Fee Related
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- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
An overload protector used for elevator of construction belongs to the technical field of the hoisting machine protective device. The utility model is to solve the technical problem that an overload protective device is provided in a suspension cage traction system, to avoid safety accident owing to overload of suspension cage. A sliding block is installed in a frame and an upper end is fixed on a draw rod of the sliding block, the sliding block is inserted is a sliding slot at a right and a left hanging plate to realize slide matching, and a measuring and control device of spring deformation is also installed between the hanging plate in the frame and the draw rod and the sliding block component. The measuring and control device of spring deformation is composed of two modes, one is a measuring and control structure of plate spring type deformation, the other is a measuring and control structure of pressure spring type deformation. The utility model is especially suitable for various construction elevators to realize overload protection, and the universal practical role can be provided for overload protection of various hoisting machines.
Description
Technical field
The utility model relates to elevator machinery fender guard technical field, especially a kind of overload protection device that is used for building construction hoist.
Background technology
At present, in various building construction hoists, as traction-type construction lifting machine, winding type building hoist etc., its steel rope is terminal directly to be fastenedly connected with the cage top, in work progress, can cause steel rope and cylinder to skid when cage overloads, braking failure, even the steel rope tear fracture, cage falls, and serious safety misadventure takes place.
Summary of the invention
The technical problems to be solved in the utility model is to be provided with overload protection device in the cage traction system of building construction hoist, with the safety misadventure of stopping to take place because of the cage overload.
The technical solution that the utility model proposed is such: the overload protection device that a kind of building construction hoist is used; comprise that building construction hoist reaches by left and right link plate 1,11, ties up the framework that rope sling 2, spacer ring 3 and binding bolt nut are formed; slide block 10 and upper end are housed in the described framework are fixed on pull bar 5 on this slide block 10; described slide block 10 is inlaid in left and right link plate 1, the 11 inboard chutes 12 and makes bearing fit, between link plate 1,11 in described framework and pull bar 5, slide block 10 assemblies spring deformation detection control apparatus is housed also.Described spring deformation detection control apparatus comprises at least one laminated spring 9, spring perch 4, seat board 8, set screw 7 and micro-switch 6, described laminated spring 9 passes its two ends of slide block 10 emptying apertures and is bearing in respectively on the spring perch 4, this spring perch 4 is fixed on the left and right link plate 1,11, described seat board 8 one ends are fixed on the pull bar 5, its other end is equipped with set screw 7, these set screw 7 belows are provided with a micro-switch 6 that is fixed on link plate 1 or 11, and its control signal is connected with this mechanomotive force control circuit by lead.Described spring deformation detection control apparatus comprises at least one pressure spring 13, depression bar 15, set screw 14, spring perch 16 and micro-switch 6, described depression bar 15 passes its two ends of slide block 10 emptying apertures set screw 14 is housed respectively, these set screw 14 bottoms are passed and are fixed on two link plates 1, spring perch 16 on 11, the outer race of set set screw 14 is equipped with at least one pressure spring 13 between depression bar 15 both ends and corresponding spring seat 16, any below is provided with a micro-switch 6 that is fixed on link plate 1 or 11 in described two set screw 14, and its control signal is connected with this mechanomotive force control circuit by lead.Described pressure spring 13 can be belleville spring or coil spring.
Tie up rope sling 2 and be fixed on the last hanger of formation between two link plates 1,11 by bolt and nut connection, the circular hole of pull bar 5 bottoms constitutes hanger down.Working process of the present utility model is: hanger hangs with weight G and main frame when last hanger is applied a upper pulling force F instantly, and laminated spring 9 toward the direction distortion of weight G, glides pull bar 5 under the effect of weight G and tensile force f.When tensile force f reaches certain value, the feeler lever of set screw 7 compressing micro-switchs 6, normally closed interlock is opened, thereby disconnects the electric control loop of main frame, reaches the purpose of overload protection.In addition, the utility model replaces laminated spring also can reach same effect with pressure spring such as disk spring or coil spring.
Compared with prior art; the utlity model has following beneficial effect: the control accuracy height, be active in one's movements, compact conformation, cost be low; it is not applicable to singly that building construction hoist makes overload protection; and for the overload protection of other various elevator machineries, stop safety misadventure, all have general realistic meaning.
Description of drawings
Fig. 1 is the structural representation and the A-A cutaway view thereof of the utility model laminated spring formula overload protection device.
Fig. 2 is the structural representation and the B-B cutaway view thereof of the utility model belleville spring formula overload protection device.
Fig. 3 is the structural representation of an Application Example of the utility model.
The specific embodiment
Embodiment 1:
Referring to shown in Figure 1, steel rope 14 1 ends are tied up and are being tied up on the rope sling 2, and cage is hung on the following hanger of pull bar 5 bottoms.At this moment, laminated spring 9 stress deformations of three stacks, pull bar 5 is to lower slider.When the cage load surpasses rated load, to run into the feeler lever of micro-switch 6 and its normally closed interlock is disconnected with the set screw 7 that pull bar 5 moves down, thereby cut off the main frame current supply circuit, cage can not rise.
Embodiment 2:
Referring to shown in Figure 2, steel rope 14 1 ends are tied up and are being tied up on the rope sling 2, and cage is hung on the following hanger of pull bar 5 bottoms.Belleville spring 13 pressurizeds of each three stack of both sides this moment, the depression bar 15 that moves down with pull bar 5 makes disk spring 13 compressions, the set screw 14 on depression bar 15 of adjusting also moves down with pull bar 5 and moves down together, when the cage load surpasses rated load, set screw 14 is run into the feeler lever of micro-switch 6 and its normally closed interlock is disconnected, thereby cut off the main frame current supply circuit, cage can not rise.
Embodiment 3:
Preferred application embodiment of the utility model is the building construction hoist that laminated spring formula overload protection device is housed; referring to Fig. 3 and shown in Figure 1, it comprises two link plates (1,11), ties up rope sling 2, spacer ring 3, two spring perches 4, pull bar 5, micro-switch 6, set screw 7, set screw seat board 8, laminated spring 9, leading sheave 12, cage 13, steel rope 14, main frame 15 and electric cabinets 16.Two spring perches 4, tie up rope sling 2, spacer ring 3 utilizes bolt and nut to be fixed in two link plates 1,11, this moment, pull bar 5 can only be made the up-and-down movement in the certain distance because the effect of chute 12 on the link plate 1,11.Laminated spring 9 middle parts are by slide block 10 sockets, and two ends are pressed in respectively on left and right each spring perch 4 of one.Set screw seat board 8 is fixed in the right side of pull bar 5 by screw, and micro-switch 6 is equipped with in the relevant position of set screw 7 belows.This micro-switch 6 utilizes screw to be fixed on the link plate 1, and its lead is connected with host computer control circuit in the electric cabinet 16.One end of steel rope 14 is on the reel of main frame 15, and its other end is tied to tying up on the rope sling 2 of overload protection device by leading sheave 12, and the pull bar 5 of this overload protection device lower end is by hanger and cage 13 articulate down.When cage 13 surpassed given load, laminated spring 9 was deformed to the normally closed interlock that makes micro-switch 6 and disconnects, main frame 15 outages, cage can not rise, only shed part load after, meeting safety rate could normal lifting, thereby has stopped safety misadventure.
Claims (4)
1, the overload protection device used of a kind of building construction hoist; comprise building construction hoist and by left and right link plate (1,11), tie up the framework that rope sling (2), spacer ring (3) and binding bolt nut are formed; it is characterized in that: slide block (10) and upper end are housed in the described framework are fixed on pull bar (5) on this slide block (10); described slide block (10) is inlaid in left and right link plate (1,11) the inboard chutes (12) and makes bearing fit, between link plate in described framework (1,11) and pull bar (5), slide block (10) assembly spring deformation detection control apparatus is housed also.
2; overload protection device according to claim 1; it is characterized in that: described spring deformation detection control apparatus comprises at least one laminated spring (9); spring perch (4); seat board (8); set screw (7) and micro-switch (6); described laminated spring (9) passes its two ends of slide block (10) emptying aperture and is bearing in respectively on the spring perch (4); this spring perch (4) is fixed on a left side; right link plate (1; 11) on; described seat board (8) one ends are fixed on the pull bar (5); its other end is equipped with set screw (7); this set screw (7) below is provided with a micro-switch (6) that is fixed on the link plate (1 or 11), and its control signal is connected with this mechanomotive force control circuit by lead.
3; overload protection device according to claim 1; it is characterized in that: described spring deformation detection control apparatus comprises at least one pressure spring (13); depression bar (15); set screw (14); spring perch (16) and micro-switch (6); described depression bar (15) passes its two ends of slide block (10) emptying aperture set screw (14) is housed respectively; this set screw (14) bottom is passed and is fixed on two link plates (1; 11) spring perch on (16); the outer race of set set screw (14) is equipped with at least one pressure spring (13) between depression bar (15) both ends and corresponding spring seat (16); any below is provided with a micro-switch (6) that is fixed on the link plate (1 or 11) in described two set screw (14), and its control signal is connected with this mechanomotive force control circuit by lead.
4, overload protection device according to claim 3 is characterized in that: described pressure spring (13) is belleville spring or coil spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03226342 CN2630213Y (en) | 2003-05-19 | 2003-05-19 | Overload protector for building construction lifter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03226342 CN2630213Y (en) | 2003-05-19 | 2003-05-19 | Overload protector for building construction lifter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2630213Y true CN2630213Y (en) | 2004-08-04 |
Family
ID=34290828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03226342 Expired - Fee Related CN2630213Y (en) | 2003-05-19 | 2003-05-19 | Overload protector for building construction lifter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2630213Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102627211A (en) * | 2012-04-23 | 2012-08-08 | 江苏金土木建设集团华顺工程有限公司 | Lifting overweight protection device for hoister |
| CN110526147A (en) * | 2019-08-27 | 2019-12-03 | 成都金瑞建工机械有限公司 | A kind of bucket proposes mixing plant hopper protective device |
-
2003
- 2003-05-19 CN CN 03226342 patent/CN2630213Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102627211A (en) * | 2012-04-23 | 2012-08-08 | 江苏金土木建设集团华顺工程有限公司 | Lifting overweight protection device for hoister |
| CN110526147A (en) * | 2019-08-27 | 2019-12-03 | 成都金瑞建工机械有限公司 | A kind of bucket proposes mixing plant hopper protective device |
| CN110526147B (en) * | 2019-08-27 | 2021-10-22 | 成都金瑞建工机械有限公司 | Hopper protection device of hopper lifting mixing station |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |