CN102910537A - Counterweight limit switch device of hoisting mechanism - Google Patents
Counterweight limit switch device of hoisting mechanism Download PDFInfo
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- CN102910537A CN102910537A CN2012103828950A CN201210382895A CN102910537A CN 102910537 A CN102910537 A CN 102910537A CN 2012103828950 A CN2012103828950 A CN 2012103828950A CN 201210382895 A CN201210382895 A CN 201210382895A CN 102910537 A CN102910537 A CN 102910537A
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- limit switch
- counterweight
- switch device
- bolt
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Abstract
The invention discloses a counterweight limit switch device of a hoisting mechanism, and relates to hoisting transport machinery. The counterweight limit switch device solves the technical problems that the existing device has a complex structure, and is difficult to maintain and heavy in the prior art. The counterweight limit switch device comprises a limit switch installed at the upper part of a trolley frame, a counterweight device installed at the lower part of the trolley frame and positioned in a position through which a cable wire on a balance arm of the hoisting mechanism can penetrate, and a thin steel wire connected with the limit switch and the counterweight device. The counterweight limit switch is characterized in that the counterweight device comprises a bolt, a nut, a lifting bolt, a weight, a lantern ring and an adjusting pad; the weight and the lantern ring are assembled into a whole body through the bolt and the nut; the adjusting pad is laid between the weight and the lantern ring; and the lifting bolt connected with the thin steel wire is installed at the center of the upper plane of the weight. The counterweight limit switch device is applied to the hoisting mechanism of a hoisting machine, and has the advantages of simple structure, convenience in installation and maintenance and light weight.
Description
Technical field
The invention belongs to the handling machinery technical field; Be particularly related to the hammer limit switch device of crane hoisting mechanism.
Background technology
According to the requirement of crane safety rules; rotation and weight two cover limit switches will be arranged on crane hoisting mechanism; namely install the rotary stopper switching device additional, install hammer limit switch device additional at suspender at reel afterbody (or speed reducer output shaft outer end), come the normal operation of duplicate protection lifting mechanism.The hammer limit switch device of prior art, its structure is as shown in Figure 1: at support 1.1 of bottom welding of trolley frame 1, support 1.1 is connected with movement weight rod 03 by an axle, movement weight rod 03 passes the top of suspender 2, its other end is a finer wire 4, finer wire top links to each other with the limit switch 5 that is comprised of switch lever 5.1 and lever tail briquetting 5.2, and limit switch 5 is installed in the top of trolley frame 1.
According to the principle of work of heavy hammer limiting switch, when the head of limit switch lever is the level of state, mechanism's normal operation; Lever head cuts off the power supply when lifting 30 ° of angles, and mechanism quits work.Therefore, the design weight of movement weight rod 03 is surpassed the weight of the lever tail briquetting 5.2 of heavy hammer limiting switch 5, can realize spacing operation.Under normal circumstances, the head of movement weight rod 03 tension limit switch lever 5.1 makes it to be the level of state mechanism's normal operation; When suspender 2 rose to the limes superiors position, cover just held up movement weight rod 03 on the suspender, and at this moment switch lever afterbody briquetting 5.2 lifts lever head, the limit switch outage, and lifting mechanism quits work.The shortcoming that prior art exists is complex structure, maintenance difficult, and installation weight is heavier.
Summary of the invention
The object of the invention is to overcome the shortcoming of prior art, a kind of weight hammer type limit switch device of lifting mechanism is provided, solve hammer limit switch device complex structure, the maintenance difficult of existing crane hoisting mechanism, the technical matters that installation weight is heavier.
Technical scheme of the present invention is achieved in that
A kind of weight hammer type limit switch device of lifting mechanism, comprise: be installed in trolley frame top, the limit switch that is formed by switch lever and lever tail briquetting, be installed in the trolley frame bottom, be positioned at the weight-driven that the steel rope string that can make on the lifting mechanism equilibrium arm is crossed, and the finer wire that connects limit switch and weight-driven, it is characterized in that: described weight-driven is by bolt, nut, ringbolt, pouring weight, the collar and adjusting pad form, described pouring weight and the described bolt of the described collar, nut is installed together, be placed with described adjusting pad between described pouring weight and the described collar, the upper planar central of described pouring weight is equipped with the described ringbolt that is connected with described finer wire.
Further, the steel rope string on the described lifting mechanism equilibrium arm is crossed the annular distance of the described collar.
Further, the weight of described weight-driven is greater than the weight of described lever tail briquetting.
The present invention compared with prior art, owing at trolley frame the weight-driven that is comprised of bolt, nut, ringbolt, pouring weight, the collar and adjusting pad has been installed, pouring weight and the collar are installed together with bolt, nut, the upper planar central of pouring weight is equipped with the ringbolt that is connected with finer wire, the annular distance of the collar can make the steel rope string mistake on the lifting mechanism equilibrium arm, when suspender rises to limes superiors, cover can hold up pouring weight on the suspender, at this moment switch lever afterbody briquetting lifts lever head, the limit switch outage, lifting mechanism quits work.The present invention is used for crane hoisting mechanism, has simple in structurely, and installation, maintenance is convenient, the advantage that installation weight is light.
Description of drawings
Fig. 1 is the structural representation of the weight hammer type limit switch device of prior art;
Fig. 2 is the installation site scheme drawing of the present invention in crane hoisting mechanism;
Fig. 3 is structural representation of the present invention (front view);
Fig. 4 is the birds-eye view of Fig. 3.
The present invention is further illustrated by preferred embodiment below in conjunction with accompanying drawing.
The specific embodiment
Shown in Fig. 2,3,4, a kind of weight hammer type limit switch device of lifting mechanism, comprise: the limit switch 5 that is installed in trolley frame 1 top, is formed by switch lever 5.1 and lever tail briquetting 5.2, be installed in trolley frame 1 bottom, be positioned at the weight-driven 3 that the steel rope 6 that can make on the lifting mechanism equilibrium arm was gone here and there, and the finer wire 4 that connects limit switch 5 and weight-driven 3; Described weight-driven 3 is comprised of bolt 3.1, nut 3.2, ringbolt 3.3, pouring weight 3.4, the collar 3.5 and adjusting pad 3.6, described pouring weight 3.4 is installed together with the described bolt 3.1 of the described collar 3.5 usefulness, nut 3.2, be placed with described adjusting pad 6 between described pouring weight 3.4 and the described collar 3.5, the upper planar central of described pouring weight 3.4 is equipped with the described ringbolt 3.3 that is connected with described finer wire 4.
Steel rope 6 on the described lifting mechanism equilibrium arm was gone here and there the annular distance 3.5.1 of the described collar 3.5.
The weight of described weight-driven 3 is greater than the weight of described lever tail briquetting 5.2.
Working process of the present invention;
According to the principle of work of heavy hammer limiting switch, when the head of limit switch lever is the level of state, mechanism's normal operation; Lever head cuts off the power supply when lifting 30 ° of angles, and mechanism quits work.Because the weight (moment of flexure of generation) of weight-driven 3 is greater than the weight (moment of flexure of generation) of described lever tail briquetting 5.2, under normal circumstances, the head of weight-driven 3 tension limit switch levers 5.1 makes it to be the level of state mechanism's normal operation; When suspender 2 rises to the limes superiors position, cover holder pouring weight 3.4 on the suspender, at this moment switch lever afterbody briquetting 5.2 lifts lever head, the limit switch outage, lifting mechanism quits work.
Claims (3)
1. the weight hammer type limit switch device of a lifting mechanism, comprise: be installed in trolley frame (1) top, the limit switch (5) that is formed by switch lever (5.1) and lever tail briquetting (5.2), be installed in trolley frame (1) bottom, be positioned at the weight-driven (3) that the steel rope (6) that can make on the lifting mechanism equilibrium arm was gone here and there, and the finer wire (4) that connects limit switch (5) and weight-driven (3), it is characterized in that: described weight-driven (3) is by bolt (3.1), nut (3.2), ringbolt (3.3), pouring weight (3.4), the collar (3.5) and adjusting pad (3.6) form, described pouring weight (3.4) and the described collar (3.5) are with described bolt (3.1), nut (3.2) is installed together, be placed with described adjusting pad (3.6) between described pouring weight (3.4) and the described collar (3.5), the upper planar central of described pouring weight (3.4) is equipped with the described ringbolt (3.3) that is connected with described finer wire (4).
2. weight hammer type limit switch device according to claim 1 is characterized in that: the steel rope (6) on the described lifting mechanism equilibrium arm was gone here and there the annular distance (3.5.1) of the described collar (3.5).
3. weight hammer type limit switch device according to claim 1, it is characterized in that: the weight of described weight-driven (3) is greater than the weight of described lever tail briquetting (5.2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103828950A CN102910537A (en) | 2012-09-27 | 2012-09-27 | Counterweight limit switch device of hoisting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103828950A CN102910537A (en) | 2012-09-27 | 2012-09-27 | Counterweight limit switch device of hoisting mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102910537A true CN102910537A (en) | 2013-02-06 |
Family
ID=47609148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103828950A Pending CN102910537A (en) | 2012-09-27 | 2012-09-27 | Counterweight limit switch device of hoisting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102910537A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113772551A (en) * | 2021-09-27 | 2021-12-10 | 大连华锐重工集团股份有限公司 | Hook top punching detection device for floating crane |
| CN116462101A (en) * | 2023-05-10 | 2023-07-21 | 江苏省特种设备安全监督检验研究院 | Height limiter with safety protection function for lifter |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5447266A (en) * | 1977-09-21 | 1979-04-13 | Hitachi Ltd | Limit switch for hoist etc. |
| CN201209099Y (en) * | 2008-04-25 | 2009-03-18 | 重庆钢铁(集团)有限责任公司 | Lifting position limiter for fixed pulley |
| CN201228213Y (en) * | 2008-05-22 | 2009-04-29 | 孙佩杰 | Heavy hammer matched with electric gourd multi-protection controller |
| WO2009089628A1 (en) * | 2008-01-16 | 2009-07-23 | Load Systems International Inc. | Upper hoist limiter |
| CN201746237U (en) * | 2010-07-27 | 2011-02-16 | 卫华集团有限公司 | Hoist and counter weight type height limiting device thereof |
-
2012
- 2012-09-27 CN CN2012103828950A patent/CN102910537A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5447266A (en) * | 1977-09-21 | 1979-04-13 | Hitachi Ltd | Limit switch for hoist etc. |
| WO2009089628A1 (en) * | 2008-01-16 | 2009-07-23 | Load Systems International Inc. | Upper hoist limiter |
| CN201209099Y (en) * | 2008-04-25 | 2009-03-18 | 重庆钢铁(集团)有限责任公司 | Lifting position limiter for fixed pulley |
| CN201228213Y (en) * | 2008-05-22 | 2009-04-29 | 孙佩杰 | Heavy hammer matched with electric gourd multi-protection controller |
| CN201746237U (en) * | 2010-07-27 | 2011-02-16 | 卫华集团有限公司 | Hoist and counter weight type height limiting device thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113772551A (en) * | 2021-09-27 | 2021-12-10 | 大连华锐重工集团股份有限公司 | Hook top punching detection device for floating crane |
| CN116462101A (en) * | 2023-05-10 | 2023-07-21 | 江苏省特种设备安全监督检验研究院 | Height limiter with safety protection function for lifter |
| CN116462101B (en) * | 2023-05-10 | 2024-01-05 | 江苏省特种设备安全监督检验研究院 | Height limiter with safety protection function for lifter |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130206 |