CN201593300U - Overload protecting device - Google Patents
Overload protecting device Download PDFInfo
- Publication number
- CN201593300U CN201593300U CN2009202927628U CN200920292762U CN201593300U CN 201593300 U CN201593300 U CN 201593300U CN 2009202927628 U CN2009202927628 U CN 2009202927628U CN 200920292762 U CN200920292762 U CN 200920292762U CN 201593300 U CN201593300 U CN 201593300U
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- China
- Prior art keywords
- roller
- nut
- overload protection
- protection device
- utility
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- 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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Abstract
The utility model discloses an overload protecting device, comprising an adjusting nut (1), a locking nut (2), a mounting screw plate (3), a pressure spring (4), a micro-switch (5), an impacting block (6), a middle roller (7), a lower roller (8), a roller mounting base (9) and an upper roller (10). A drawing steel wire rope (11) passes through three rollers with different axial lines so as to lead the steel wire rope to be in S-shaped trend, horizontal component force is generated on the middle roller (7) by aid of perpendicularly downward gravity of a hanging bracket, the component force compresses the pressure spring (4) and the impacting block (6) to move leftwards through the middle roller (7), when applied load of the hanging bracket exceeds rated load, the impacting block (6) presses the micro-switch (5), and the micro-switch (5) acts on an audible and visual alarm and actively cut off power of a motor, thereby achieving the purpose of overload protection. The overload protecting device can be commonly adaptable to various high-altitude operation hanging brackets.
Description
Technical field
The utility model belongs to building machinery work high above the ground field, particularly, relates to a kind of overload protection device of high-lift operation hanging cradle.
Background technology
Along with being on the increase of building trade high-rise working, the application of hanging basket more and more widely.But through regular meeting many hidden danger appear in the use of hanging basket; not high as awareness of safety owing to the operator; in order to pursue efficient and speed; continue to use the situation of hanging basket to happen occasionally after surpassing rated load; this has brought a lot of potential safety hazards for the application of hanging basket; therefore in order to make the use that obtains of aerial work basket energy safety and reliability, in the design of hanging basket, must set up overload protection device, to adapt to the requirement of present building machinery trouble free service.
But, on the hanging basket of high-rise working overload protection device is not set generally at present owing to the restriction of reasons such as technology, price.Simultaneously because how the rated load difference of different hanging baskets provides a kind of overload protection device tool that can be widely used in any rated load hanging basket to have very important significance.
The utility model content
The purpose of this utility model is at above-mentioned defective of the prior art, proposes the overload protection device on a kind of various hanging baskets that can generally be applicable to work high above the ground, to realize the safety work of hanging basket.
The technical scheme that realizes above-mentioned purpose is as follows:
A kind of overload protection device comprises and adjusts nut 1, locking nut 2, installation spiral shell plate 3, stage clip 4, microswitch 5, collision block 6, middle roller 7, bottom roller 8, roller mount pad 9, upper roller 10; Described installation spiral shell plate 3 is installed on the roller mount pad 9, adjusts nut 1 and is installed in the installation spiral shell plate 3, adjusts nut 1 and is provided with locking nut 2; Described upper roller 10 and bottom roller 8 are fixedly mounted on the roller mount pad 9, and described middle roller 7 is movably arranged on upper roller 10, bottom roller 8 zone lines on the roller mount pad 9; Roller 7 is connected by stage clip 4 with adjustment nut 1 in the middle of described, and is connected with collision block 6 near stage clip 4 one sides on the middle roller 7; Described collision block 6 moving directions are provided with microswitch 5.
Further, described overload protection device also is connected with audible-visual annunciator.
Upper roller in the overload protection device of the present utility model and bottom roller are fixed idler whell; middle roller is an action roller; operating principle of the present utility model utilizes haulage cable to pass through three different axis roller (upper rollers exactly; middle roller; bottom roller) make wire rope form S shape trend; utilize hanging basket gravity vertically downward; produce a horizontal component on the action roller in the middle of the projecting point of S shape wire rope is; this component is moved to the left by the action roller compression press spring and the collision block of centre; when the imposed load of hanging basket reaches rated load; then to impel stage clip and collision block also be certain (being that the rock deformation pressure that the compression of formed horizontal component of rated load and stage clip is produced is in equilibrium state) to the distance of left movement to the horizontal partial pressure that draws of rated load; on this distance, place microswitch; this moment, just in time collision block knocked on the not operating distance of microswitch; collision block continues to be moved to the left when the imposed load of hanging basket surpasses rated load; it is the action of guide sound light crossing-signal that microswitch is just connected; send alarm signal; cut off main power source simultaneously; elevator can't be worked, to guarantee trouble free service.
The utlity model has following beneficial effect:
1, adopts overload protection device, can guarantee the safety in utilization of high-lift operation hanging cradle.
2, the setting of three roller structures in the overload protection device reduces the deadweight component in the horizontal direction of hanging basket and load, has alleviated the stressed of stage clip, has prolonged its application life.
3, adjust being provided with and debugging setting according to different rated loads to overload device of nut, locking nut and installation spiral shell plate in the overload protection device, this overload device can generally be applicable on the various hanging baskets.
4, also be provided with audible-visual annunciator in this overload protection device, when hanging basket surpasses rated load, can in time remind operating personnel, avoided because damage and personnel's danger of the machine that overload causes.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Description of drawings
Accompanying drawing is used to provide further understanding of the present utility model, and constitutes the part of manual, is used from explanation the utility model with embodiment one of the present utility model, does not constitute restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the fundamental diagram of the utility model overload protection device.
In conjunction with the accompanying drawings, Reference numeral is as follows among the utility model embodiment:
1-adjusts nut; The 2-locking nut; 3-installs the spiral shell plate; The 4-stage clip; The 5-microswitch; The 6-collision block; Roller in the middle of the 7-; The 8-bottom roller; 9-roller mount pad; The 10-upper roller; The 11-haulage cable;
The specific embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the utility model, and be not used in qualification the utility model.
As Fig. 1, overload protection device of the present utility model comprises adjusts nut 1, locking nut 2, installation spiral shell plate 3, stage clip 4, microswitch 5, collision block 6, middle roller 7, bottom roller 8, roller mount pad 9, upper roller 10.Spiral shell plate 3 wherein is installed is installed on the roller mount pad 9, adjust nut 1 and be installed in the installation spiral shell plate 3, adjust nut 1 and be provided with locking nut 2.Upper roller 10 and bottom roller 8 are fixedly mounted on the roller mount pad 9, and middle roller 7 is movably arranged on upper roller 10, bottom roller 8 zone lines on the roller mount pad 9; Middle roller 7 is connected by stage clip 4 with adjustment nut 1, and is connected with collision block 6 near stage clip 4 one sides on the middle roller 7; Collision block 6 moving directions are provided with microswitch 5.
Overload protection device of the present utility model is installed on the hole of advancing to restrict of the traction enhancement machine top on the hanging basket.
Before the use; at first overload protection device need be debugged according to the rated load of hanging basket; in its debug process; spiral shell plate 3 is installed to be installed on roller mount pad 9 side plates; adjusting nut 1 is installed in the installation spiral shell plate 3; adjusting rotating about of nut 1 is to be used for adjusting stage clip 4; be used for the balance adjustment; pressure that acts on the middle roller and the vertical force decomposition horizontal component on middle roller 7 that acts on the haulage cable 11 are balanced each other; this moment, collision block 6 was moved to the left; its inclined-plane rigidly connects on the roller that touches microswitch 5, and microswitch 5 is failure to actuate.The good back of levelling just is locked at locking nut 2 to adjust on the nut 1 and makes it locking, and marks envelope with red line.
This overload protection device also is connected with audible-visual annunciator.
When load surpasses rated load; the horizontal component that acts on the vertical force on the haulage cable 11 and change on middle roller 7 also increases thereupon; this power continues compression press spring 4; produce collision block 6 continues to be moved to the left thereupon; promptly make it collision block 6 and depress microswitch 5; audible-visual annunciator on the actuating signal control electric wiring of microswitch 5; and cut initiatively driving motor power supply; cause equipment to quit work; thereby reached the purpose of overload protection; after overload was removed, equipment promptly recovered operate as normal.
It should be noted that at last: the above only is preferred embodiment of the present utility model, be not limited to the utility model, although the utility model is had been described in detail with reference to previous embodiment, for a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (2)
1. overload protection device, it is characterized in that, comprise and adjust nut (1), locking nut (2), installation spiral shell plate (3), stage clip (4), microswitch (5), collision block (6), middle roller (7), bottom roller (8), roller mount pad (9), upper roller (10);
Described installation spiral shell plate (3) is installed on the roller mount pad (9), adjusts nut (1) and is installed in the installation spiral shell plate (3), adjusts nut (1) and is provided with locking nut (2);
Described upper roller (10) and bottom roller (8) are fixedly mounted on the roller mount pad (9), and described middle roller (7) is movably arranged on upper roller (10), bottom roller (8) zone line on the roller mount pad (9);
Roller (7) is connected by stage clip (4) with adjustment nut (1) in the middle of described, and middle roller (7) upward is connected with collision block (6) near stage clip (4) one sides; Described collision block (6) moving direction is provided with microswitch (5).
2. a kind of overload protection device according to claim 1 is characterized in that described overload protection device also is connected with audible-visual annunciator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202927628U CN201593300U (en) | 2009-12-08 | 2009-12-08 | Overload protecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202927628U CN201593300U (en) | 2009-12-08 | 2009-12-08 | Overload protecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201593300U true CN201593300U (en) | 2010-09-29 |
Family
ID=42775367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202927628U Expired - Fee Related CN201593300U (en) | 2009-12-08 | 2009-12-08 | Overload protecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201593300U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464358A (en) * | 2016-01-13 | 2016-04-06 | 中国葛洲坝集团第一工程有限公司 | Multi-layer construction basket |
-
2009
- 2009-12-08 CN CN2009202927628U patent/CN201593300U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464358A (en) * | 2016-01-13 | 2016-04-06 | 中国葛洲坝集团第一工程有限公司 | Multi-layer construction basket |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100929 Termination date: 20111208 |