CN204173790U - A kind of suspension type limit switch - Google Patents
A kind of suspension type limit switch Download PDFInfo
- Publication number
- CN204173790U CN204173790U CN201420638594.4U CN201420638594U CN204173790U CN 204173790 U CN204173790 U CN 204173790U CN 201420638594 U CN201420638594 U CN 201420638594U CN 204173790 U CN204173790 U CN 204173790U
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- limit switch
- magnetic patch
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- weight
- lifting equipment
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Abstract
The utility model discloses a kind of suspension type limit switch, its structure comprises limit switch body, suspension cord, antihunting rope, cable conductor, fixing magnetic patch, movable magnetic patch, guide rod, contact, normally closed point, spring and apertured partition; Described limit switch body is arranged on below weight-lifting equipment; The lower end of described suspension cord is fixed on the upper middle position of limit switch body, and the upper end of suspension cord is fixed on the bottom of weight-lifting equipment; One end of antihunting rope is fixed on the side of limit switch body, and the other end is fixed on the below of the fixed end of weight-lifting equipment steel rope; The inner chamber of described limit switch body is provided with fixing magnetic patch, movable magnetic patch, guide rod, contact, normally closed point, spring and apertured partition.The suspension hook upper limit that this limit switch can effectively avoid " weight " slippage to cause is spacing malfunctioning, and the suspension hook upper limit that causes due to reasons such as travel switch projecting shaft lockings can also be avoided spacing malfunctioning.
Description
Technical field
The utility model relates to a kind of limit switch, specifically a kind of suspension type limit switch.
Background technology
For relatively large overhead traveling crane class weight-lifting equipment, generally all adopt coder spacing as the suspension hook upper limit, for small lifting equipment as " hoist ceiling crane " etc., the method that general then employing travel switch adds a weight is spacing as the suspension hook upper limit, use the weight-lifting equipment of this inhibiting device, its suspension hook upper limit is spacing generally all not too to work, be very easy to malfunctioning, think through long-term observation, malfunctioning reason has three kinds, one is because weight presses down travel switch for a long time, the spring fatigue in travel switch is caused to follow the string, when causing suspension hook to rise to picking-up weight, spring still can not be upspring, the normally closed point in travel switch is caused not open, cause spacing malfunctioning, there is suspension hook overwind trouble, two be the projecting shaft of travel switch due to oneself corrosion of being failure to actuate for a long time, or stuck with paste dead by dust, cause projecting shaft " locking ", even if weight is held up, spring does not have fatigue yet but still normally closed point cannot be opened, and the suspension hook upper limit still can be caused spacing malfunctioning, and suspension hook overwind trouble occurs, three is weight slippages when running into lifting hook pulley shell upper, even if at this moment projecting shaft does not have locking, spring does not have tired or normally closed point cannot be opened, and the suspension hook upper limit still can be caused spacing malfunctioning, and suspension hook overwind trouble occurs.
Utility model content
The purpose of this utility model is to provide a kind of suspension type limit switch, the suspension hook upper limit that this limit switch can effectively avoid " weight " slippage to cause is spacing malfunctioning, the suspension hook upper limit that causes due to reasons such as travel switch projecting shaft lockings can also be avoided spacing malfunctioning, therefore, this limit switch effectively can solve the spacing easily malfunctioning problem of the small lifting equipment suspension hook upper limit, can meet the demand of small lifting equipment to the spacing safe and reliable aspect of the suspension hook upper limit.
The technical scheme in the invention for solving the technical problem is: a kind of suspension type limit switch, and its structure comprises limit switch body, suspension cord, antihunting rope, cable conductor, fixing magnetic patch, movable magnetic patch, guide rod, contact, normally closed point, spring and apertured partition; Described limit switch body is arranged on below weight-lifting equipment; The lower end of described suspension cord is fixed on the upper middle position of limit switch body, and the upper end of suspension cord is fixed on the bottom of weight-lifting equipment; One end of antihunting rope is fixed on the side of limit switch body, and the other end is fixed on the below of the fixed end of weight-lifting equipment steel rope; The inner chamber of described limit switch body is provided with fixing magnetic patch, movable magnetic patch, guide rod, contact, normally closed point, spring and apertured partition.
Further, the inner chamber middle and lower part of described limit switch body is provided with apertured partition; Described fixing magnetic patch is arranged on the middle part of limit switch chamber body diapire, is respectively equipped with a movable magnetic patch, movable magnetic patch is fixed with guide rod in the both sides of fixing magnetic patch; The lower end connection activity magnetic patch of described guide rod, upper end, through connection contact after apertured partition, the guide rod between contact and apertured partition is set with spring; Described contact connects normally closed point; One end connecting cable wire of described normally closed point wherein one one end, the relay of wherein one the other end connection weight-lifting equipment of described cable conductor, one end of the other end connecting cable wire of normally closed point wherein another strand, the other end of wherein another strand of described cable conductor connects the relay of weight-lifting equipment, forms close circuit.
Further, described limit switch body 1 is mounted in 30 ~ 50 centimeters below weight-lifting equipment.
Further, one end of described antihunting rope is below 35 ~ 55 centimeters of the fixed end being fixed on weight-lifting equipment steel rope.
Further, described movable magnetic patch, guide rod, spring, contact and normally closed point are respectively two groups, and normally closed point 9 series combination of two groups uses.
The beneficial effects of the utility model are:
1, this limit switch utilizes fixing magnetic patch can the feature of quick adsorption on steel lifting hook pulley shell, catch " target " create condition for movable magnetic patch is flutterred, the magnetic patch quick adsorption therefore, it is possible to innervate also opens rapidly normally closed point, and limit switch is played one's part to the full.
2, the device owing to utilizing movable magnetic patch to open normally closed point is provided with two covers in this limit switch, therefore, further increases the reliability of this limit switch.
3, the suspension hook upper limit utilizing this limit switch can not only effectively avoid " weight " slippage to cause is spacing malfunctioning, the suspension hook upper limit that causes due to reasons such as travel switch projecting shaft lockings can also be avoided spacing malfunctioning, therefore, this limit switch effectively can solve the spacing easily malfunctioning problem of the small lifting equipment suspension hook upper limit, can meet the demand of small lifting equipment to the spacing safe and reliable aspect of the suspension hook upper limit.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is using state figure of the present utility model.
In figure: 1, limit switch body, 2, suspension cord, 3, antihunting rope, 4, cable conductor, 5, fixing magnetic patch, 6, movable magnetic patch, 7, guide rod, 8, contact, 9, normally closed point, 10, spring, 11, apertured partition, 12, weight-lifting equipment, 13, weight-lifting equipment steel rope, 14, fixed end.
Detailed description of the invention
With reference to Figure of description, a kind of suspension type limit switch of the present utility model is described in detail below.
As shown in Figure 1 and Figure 2, a kind of suspension type limit switch of the present utility model, its structure comprises limit switch body 1, suspension cord 2, antihunting rope 3, cable conductor 4, fixing magnetic patch 5, movable magnetic patch 6, guide rod 7, contact 8, normally closed point 9, spring 10 and apertured partition 11; Described limit switch body 1 is arranged on below weight-lifting equipment 12; The lower end of described suspension cord 2 is fixed on the upper middle position of limit switch body 1, and the upper end of suspension cord 2 is fixed on the bottom of weight-lifting equipment 12; One end of antihunting rope 3 is fixed on the side of limit switch body 1, and the other end is fixed on the below of the fixed end 14 of weight-lifting equipment steel rope 13; The inner chamber of described limit switch body is provided with fixing magnetic patch 5, movable magnetic patch 6, guide rod 7, contact 8, normally closed point 9, spring 10 and apertured partition 11.
The inner chamber middle and lower part of described limit switch body 1 is provided with apertured partition 11; Described fixing magnetic patch 5 is arranged on the middle part of limit switch body 1 bottom wall of inner cavity, is respectively equipped with a movable magnetic patch 6, movable magnetic patch 6 is fixed with guide rod 7 in the both sides of fixing magnetic patch 5; The lower end connection activity magnetic patch 6 of described guide rod 7, upper end, through connection contact 8 after apertured partition, the guide rod 7 between contact 8 and apertured partition 11 is set with spring 10; Described contact 8 connects normally closed point 9; One end connecting cable wire 4 of described normally closed point 9 wherein one one end, the relay of wherein one the other end connection weight-lifting equipment of described cable conductor 4, one end of the other end connecting cable wire 4 of normally closed point 9 wherein another strand, the other end of wherein another strand of described cable conductor 4 connects the relay of weight-lifting equipment, forms close circuit.
Described limit switch body 1 is mounted in 30 ~ 50 centimeters below weight-lifting equipment 12.
One end of described antihunting rope 3 is below 35 ~ 55 centimeters of the fixed end 14 being fixed on weight-lifting equipment steel rope 13.
Described movable magnetic patch 6, guide rod 7, spring 10, contact 8 and normally closed point 9 are respectively two groups, and normally closed point 9 series combination of two groups uses.Because the device utilizing movable magnetic patch to open normally closed point is provided with two covers in this limit switch, therefore, further increase the reliability of this limit switch.
Limit switch of the present utility model utilizes fixing magnetic patch can the feature of quick adsorption on steel lifting hook pulley shell, catch " target " create condition for movable magnetic patch is flutterred, the magnetic patch quick adsorption therefore, it is possible to innervate also opens rapidly normally closed point, and limit switch is played one's part to the full.The suspension hook upper limit utilizing this limit switch can not only effectively avoid " weight " slippage to cause is spacing malfunctioning, the suspension hook upper limit that causes due to reasons such as travel switch projecting shaft lockings can also be avoided spacing malfunctioning, therefore, this limit switch effectively can solve the spacing easily malfunctioning problem of the small lifting equipment suspension hook upper limit, can meet the demand of small lifting equipment to the spacing safe and reliable aspect of the suspension hook upper limit.
The above, just explain through diagrams principles more of the present utility model, this specification sheets is not the utility model to be confined in shown described concrete structure and Applicable scope, therefore every corresponding modify of being likely utilized and equivalent, all belong to the scope of the claims that the utility model is applied for.
Except technical characteristic described in specification sheets, all the other technical characteristics are those skilled in the art's known technology.
Claims (5)
1. a suspension type limit switch, is characterized in that, comprises limit switch body, suspension cord, antihunting rope, cable conductor, fixing magnetic patch, movable magnetic patch, guide rod, contact, normally closed point, spring and apertured partition; Described limit switch body is arranged on below weight-lifting equipment; The lower end of described suspension cord is fixed on the upper middle position of limit switch body, and the upper end of suspension cord is fixed on the bottom of weight-lifting equipment; One end of antihunting rope is fixed on the side of limit switch body, and the other end is fixed on the below of the fixed end of weight-lifting equipment steel rope; The inner chamber of described limit switch body is provided with fixing magnetic patch, movable magnetic patch, guide rod, contact, normally closed point, spring and apertured partition.
2. a kind of suspension type limit switch according to claim 1, is characterized in that, the inner chamber middle and lower part of described limit switch body is provided with apertured partition; Described fixing magnetic patch is arranged on the middle part of limit switch chamber body diapire, is respectively equipped with a movable magnetic patch, movable magnetic patch is fixed with guide rod in the both sides of fixing magnetic patch; The lower end connection activity magnetic patch of described guide rod, upper end, through connection contact after apertured partition, the guide rod between contact and apertured partition is set with spring; Described contact connects normally closed point; One end connecting cable wire of described normally closed point wherein one one end, the relay of wherein one the other end connection weight-lifting equipment of described cable conductor, one end of the other end connecting cable wire of normally closed point wherein another strand, the other end of wherein another strand of described cable conductor connects the relay of weight-lifting equipment, forms close circuit.
3. a kind of suspension type limit switch according to claim 1, is characterized in that, described limit switch body is mounted in 30 ~ 50 centimeters below weight-lifting equipment.
4. a kind of suspension type limit switch according to claim 1, is characterized in that, one end of described antihunting rope is below 35 ~ 55 centimeters of the fixed end being fixed on weight-lifting equipment steel rope.
5. a kind of suspension type limit switch according to claim 1, is characterized in that, described movable magnetic patch, guide rod, spring, contact and normally closed point are respectively two groups, and the normally closed some series combination of two groups uses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420638594.4U CN204173790U (en) | 2014-10-30 | 2014-10-30 | A kind of suspension type limit switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420638594.4U CN204173790U (en) | 2014-10-30 | 2014-10-30 | A kind of suspension type limit switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204173790U true CN204173790U (en) | 2015-02-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420638594.4U Active CN204173790U (en) | 2014-10-30 | 2014-10-30 | A kind of suspension type limit switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204173790U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104326366A (en) * | 2014-10-30 | 2015-02-04 | 山东钢铁股份有限公司 | Suspension type limit switch |
| CN107055335A (en) * | 2017-06-08 | 2017-08-18 | 青岛海西重机有限责任公司 | A kind of dead-weight lifting altitude position-limit mechanism, crane and method |
-
2014
- 2014-10-30 CN CN201420638594.4U patent/CN204173790U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104326366A (en) * | 2014-10-30 | 2015-02-04 | 山东钢铁股份有限公司 | Suspension type limit switch |
| CN104326366B (en) * | 2014-10-30 | 2016-04-13 | 山东钢铁股份有限公司 | A kind of suspension type limit switch |
| CN107055335A (en) * | 2017-06-08 | 2017-08-18 | 青岛海西重机有限责任公司 | A kind of dead-weight lifting altitude position-limit mechanism, crane and method |
| CN107055335B (en) * | 2017-06-08 | 2018-09-14 | 青岛海西重机有限责任公司 | A kind of dead-weight lifting altitude position-limit mechanism, crane and method |
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