CN203392684U - Novel stretching device - Google Patents
Novel stretching device Download PDFInfo
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- CN203392684U CN203392684U CN201320442257.3U CN201320442257U CN203392684U CN 203392684 U CN203392684 U CN 203392684U CN 201320442257 U CN201320442257 U CN 201320442257U CN 203392684 U CN203392684 U CN 203392684U
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- expanding force
- regulating mechanism
- force regulating
- adjusting wheel
- track adjusting
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Abstract
The utility model relates to a novel stretching device, and solves the problem that adjustable range is limited and requirements to the mounting environment are high in the existing stretching device. The stretching device comprises a guide pulley, a steel wire rope winded around the guide pulley and a stretching force detector. The guide pulley is mounted in a pit of a well via a fixed support, a stretching force regulating mechanism is arranged below the guide pulley and comprises a chuck and a winding shaft with diameter adjustable, the winding shaft comprises a plurality of pawls and is arranged on the chuck, the stretching force detector is connected with a controller connected with an elevator control cabinet, and the elevator control cabinet is connected with the stretching force regulating mechanism. The novel stretching device has the advantages that balance weight setting and balance weight operating headspace are deleted, so that requirements of pit depth of the well is lowered, and application range is wider; adjustable range is large, so that requirements of all stretching fore of over-speed governors can be met; automation is realized, maintenance man hours are saved and safety of maintenance staff is improved.
Description
Technical field
The utility model relates to a kind of safety protection apparatus for elevator, relates in particular to that a kind of setting range is large, low to installation environment requirement, the novel swelling device of self-align.
Background technology
The rotation of governor sheave is to lean on the friction force of speed limiter wire rope to drive, and in order to be enough to that the nonslipping drive rope sheave of steel rope is rotated, steel rope needs certain predetermincd tension; According to GB GB7588 requirement, when velocity limiter moves, the tension force of governor rope must not be less than the greater of following two values: 1) safety tongs its act on 2 times of required power, or 2) 300N.
And speed limiter wire rope itself is elastic body, be to elongate or shorten along with factor impacts such as the temperature in hoistway, humidity variation, elevator operations.For guaranteeing the tension force of speed limiter wire rope, steel rope below needs to arrange swelling device.
On elevator, the most frequently used swelling device mainly contains swing arm type, two kinds of swelling devices of vertical Lift type at present.The two is all by pressing guide plate to be connected on guide rail, but the similar counterweight ratio of tensioner principle is different.
Swing arm type swelling device structure is generally: expansion tightening wheel and clump weight are fixed in swing arm, and be rotated along centre of gration, the weight of clump weight determined by the jib-length ratio of expansion tightening wheel jib-length and counterweight fixed position, generally clump weight weight be velocity limiter requirement weight 1/2 ~ 3/4.This swing arm type swelling device because of the saving of its counterweight, the reason such as simple in structure be that its application is very extensive, but be also because cantilever structure is that its setting range is very limited, must repair and maintenance personnel regularly to speed limiter wire rope, cut maintenance, very easily because of repair and maintenance, produce and stop terraced accident not in time, and then cause client's complaint.
In addition, vertical Lift type swelling device structure is: expansion tightening wheel and clump weight above-below direction layout, and clump weight can be along guide groove up-and-down movement, and the weight of clump weight equals the weight that velocity limiter requires in such cases.Although vertical Lift type swelling device has strengthened variable range, because its structure design restriction is higher to the requirement of pit depth, so its range of use is also restricted.Along with the continuous increase of depth of building, day by day urgent to the demand of little pit, large hoisting depth, former swelling device structure can not meet market demand.
As the patent No. Chinese utility model that is 201020189553.3, a kind of elevator expansion apparatus is disclosed, its structure comprises the support being fixed on guide rail, on support, be connected with expansion tightening wheel and clump weight, also comprise a vertical movement apparatus, vertical movement apparatus one side is fixed with support, and another side and expansion tightening wheel are fixed.This expansion tightening wheel device is swing arm type mechanism, just there is above-mentioned shortcoming, support and clump weight need to take up room, elevator hoistways is had relatively high expectations, swing arm type structure swelling device setting range is very limited in addition, must repair and maintenance personnel regularly to speed limiter wire rope, cut maintenance, very easily because repair and maintenance produce and stop terraced accident not in time.
Summary of the invention
The utility model mainly solved existing swelling device setting range limited, installation environment is required to high problem, provide that a kind of setting range is large, low to installation environment requirement, the novel swelling device of self-align.
The utility model solves the technical scheme that its technical matters adopts: a kind of novel swelling device, comprise track adjusting wheel, steel rope in track adjusting wheel around the home, described track adjusting wheel is arranged on well pit by fixed support, expanding force regulating mechanism is set below track adjusting wheel, described expanding force regulating mechanism comprises chuck and is arranged on the adjustable winding axle of diameter consisting of some ratchets on chuck, described steel rope is walked around track adjusting wheel one rear flank and is wrapped on expanding force regulating mechanism, and then rap around on track adjusting wheel opposite side, swelling device also comprises the expanding force detector that detects wire rope tension-force, described expanding force detector is connected on a controller, controller is connected with elevator control cabinet, elevator control cabinet control linkage expanding force regulating mechanism.The utility model is directly installed on well pit bottom surface, and has cancelled counterweight setting and weight counterbalance operation headspace, and this makes well pit depth requirements very little, and field of application is wider.The expanding force regulating mechanism that the utility model adopts can improve and reduce expanding force, and setting range is wider, can meet the requirement of institute's speed limiter expanding force.The utility model has adopted automatic adjusting expanding force, this expanding force detector detects the expanding force of steel rope in real time, and data are passed to pine to controller, controller calculates current wire rope tension-force, and itself and the wire rope tension-force threshold value of setting are compared, if be less than threshold value, controller sends increases expanding force order to elevator control cabinet, by elevator control cabinet, to expanding force regulating mechanism, powered, and control expanding force regulating mechanism and increase to be wound around shaft diameter and to increase wire rope tension-force, until current detection to wire rope tension-force reach threshold value requirement, controlling expanding force regulating mechanism quits work.If current wire rope tension-force is greater than threshold value, controller sends and reduces expanding force order to elevator control cabinet, its control process instead once, until current detection to wire rope tension-force reach threshold value requirement, control expanding force regulating mechanism and quit work.Realized automation control, monitoring steel wire rope expanding force, has guaranteed velocity limiter accuracy of action constantly, has improved the safety of velocity limiter action.While expanding force state enters hoistway without repair and maintenance personnel and checks, has improved repair and maintenance personnel's self-security.
As a kind of preferred version, the chuck of described expanding force regulating mechanism is rotationally connected guide roller below, described ratchet is provided with four, ratchet front end is circular arc panel, and the cylindrical winding axle of the common formation of panel of four ratchet front ends, is provided with orienting lug on ratchet, on chuck relevant position, be provided with the guide groove radially extending, orienting lug is embedded in guide groove, is provided with and drives the flexible automated drive of ratchet on ratchet rear end, and automated drive is controlled to be connected on elevator control cabinet.Chuck synchronously rotates with track adjusting wheel, and the panel of four ratchet front ends can synchronously stretch along guide groove under automated drive drives, and this makes the diameter of the winding axle of formation become large or reduce, and gives and is wrapped in the steel rope increase being wound around on axle or reduces expanding force.Automated drive work is controlled by elevator control cabinet.This automated drive can be pneumatic, hydraulic pressure or electronic actuator.
As a kind of preferred version, described expanding force regulating mechanism is provided with two, be respectively main expanding force regulating mechanism and from expanding force regulating mechanism, two expanding force regulating mechanisms are arranged on track adjusting wheel below symmetrically and side by side, described steel rope is walked around after track adjusting wheel by inner side on the winding axle entering at main expanding force regulating mechanism, steel rope lays out parallel extending from the winding axle of expanding force regulating mechanism after the winding axle of main expanding force regulating mechanism, and by outside around entering on the winding axle from expanding force regulating mechanism, steel rope lays out from the winding axle of expanding force regulating mechanism on track adjusting wheel opposite side.Expanding force regulating mechanism arranges two, makes to dispatch less, and degree of regulation is higher, has also reduced repair and maintenance frequency simultaneously, has reduced repair and maintenance cost.
As a kind of preferred version, described steel rope is wound around a circle or is wound around multi-turn on the winding axle of expanding force regulating mechanism.Be wound around multi-turn and make expanding force degree of regulation less, variable range is larger.
As a kind of preferred version, the described expanding force regulating mechanism winding Zhou center of circle is less than winding axle radius and track adjusting wheel radius sum to the distance of the vertical line at place, the track adjusting wheel center of circle.Steel rope can be tightly in track adjusting wheel like this, and again can be tightly around being wound around on axle.
As a kind of preferred version, on described chuck, be provided with safety switch, safety switch is arranged on and is wound around the end position that axle increases, and safety switch has trigger end, and trigger end is towards towards being wound around axle, and described safety switch is connected in elevator safety loop.Set and be wound around the limit that shaft diameter increases, at winding axle, increase extreme position safety switch is set, like this when winding shaft diameter increases to the limit, trigger safety switch, this explanation steel wire rope looseness degree has reached adjustable upper limit, elevator safety loop disconnects, and elevator is out of service, needs after manual regulation rope capacity place in operation again.
The utility model has the advantages that: 1. cancelled counterweight setting, reduced the space of the shared space of former clump weight and clump weight operation, made well pit depth requirements very littlely, field of application is wider; 2. variable range is very large, can meet the requirement of institute's speed limiter expanding force; 3. realize automation, can to expanding force, control effectively in real time, also reduced repair and maintenance requirement and repair and maintenance frequency; 4. expanding force status signal feeds back to control housing, and repair and maintenance personnel check without entering hoistway, has saved repair and maintenance man-hours, has also improved repair and maintenance personnel's self-security simultaneously.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present utility model;
Fig. 2 is a kind of circuit block diagram of automatically controlling in the utility model.
The main expanding force regulating mechanism of 1-track adjusting wheel 2-fixed support 3-steel rope 4-5-is from expanding force regulating mechanism 6-chuck 7-panel 8-expanding force detector 9-controller 10-elevator control cabinet 11-automated drive 12-safety switch 13-ratchet.
The specific embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is further described.
Embodiment:
A kind of novel swelling device of the present embodiment, as shown in Figure 1, comprises track adjusting wheel 1, and track adjusting wheel is arranged on mounting bracket 2, and mounting bracket is bolted on well pit ground.Below track adjusting wheel, be provided with two expanding force regulating mechanisms, be respectively main expanding force regulating mechanism 4 and be arranged side by side and symmetry is arranged on track adjusting wheel below from expanding force regulating mechanism 5, two expanding force regulating mechanisms.
This main expanding force regulating mechanism 4 is with the same from the structure of expanding force regulating mechanism 5, they all comprise a circular chuck 6, chuck is arranged on mounting bracket by axle, on chuck, be provided with four ratchets 13, ratchet front end is circular arc panel 7, the cylindrical winding axle for lay winding wire ropes of the common formation of panel of four ratchet front ends, on ratchet, be provided with orienting lug, on chuck relevant position, be provided with the guide groove radially extending, orienting lug is embedded in guide groove, is provided with and drives the flexible automated drive 11 of ratchet on ratchet rear end.The winding Zhou center of circle of two expanding force regulating mechanisms is less than winding axle radius and track adjusting wheel radius sum to the distance of the vertical line at place, the track adjusting wheel center of circle.
Steel rope is walked around after track adjusting wheel by inner side on the winding axle entering at main expanding force regulating mechanism, steel rope lays out parallel extending from the winding axle of expanding force regulating mechanism after the winding axle of main expanding force regulating mechanism, and by outside around entering on the winding axle from expanding force regulating mechanism, steel rope lays out from the winding axle of expanding force regulating mechanism on track adjusting wheel opposite side.This steel rope is wound around a circle or is wound around multi-turn on the winding axle of two expanding force regulating mechanisms.
As depicted in figs. 1 and 2, swelling device also comprises the expanding force detector 8 that detects wire rope tension-force, and expanding force detector is connected on a controller 9, and controller is connected with elevator control cabinet 10, elevator control cabinet is connected with automated drive, controls automated drive work.
In addition, in order further to protect swelling device, be provided with safety switch 12 on chuck 6, safety switch is arranged on and is wound around the end position that axle increases, and safety switch has trigger end, and trigger end is towards being wound around axle, and safety switch is connected in elevator safety loop.
The principle of work of swelling device is: during work, expanding force detector detects the expanding force of steel rope in real time, and send data to controller, controller calculates current wire rope tension-force, and itself and the wire rope tension-force threshold value of setting are compared, if be less than threshold value, controller sends increases expanding force order to elevator control cabinet, by elevator control cabinet, to expanding force regulating mechanism, powered, and control automated drive work in expanding force regulating mechanism, outwards promote panel, making to be wound around shaft diameter increases, thereby increased wire rope tension-force, until current detection to wire rope tension-force reach threshold value requirement, controller is controlled expanding force regulating mechanism and is quit work.If current wire rope tension-force is greater than threshold value, controller sends and reduces expanding force order to elevator control cabinet, its similar process, also by elevator control cabinet, to expanding force regulating mechanism, powered, and control automated drive work in expanding force regulating mechanism, inwardly hand-pulled noodles plate, making to be wound around shaft diameter reduces, thereby reduced wire rope tension-force, until current detection to wire rope tension-force reach threshold value requirement, controller is controlled expanding force regulating mechanism and is quit work.
In addition when regulating expanding force, be wound around shaft diameter and increase to end position always, this explanation steel wire rope looseness degree has reached adjustable upper limit, be wound around axle and can encounter the trigger end of safety switch, triggering safety switch disconnects, elevator safety loop disconnects, and elevator is out of service, needs after manual regulation rope capacity place in operation again.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various modifications or supplement or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although more used track adjusting wheel, fixed support, steel rope, main expanding force regulating mechanism herein, from terms such as expanding force regulating mechanisms, do not get rid of the possibility of using other term.Use these terms to be only used to describe more easily and explain essence of the present invention; They are construed to any additional restriction is all contrary with spirit of the present invention.
Claims (6)
1. a novel swelling device, comprise track adjusting wheel, steel rope in track adjusting wheel around the home, it is characterized in that: described track adjusting wheel (1) is arranged on well pit by fixed support (2), expanding force regulating mechanism is set below track adjusting wheel, described expanding force regulating mechanism comprises chuck (6) and is arranged on the adjustable winding axle of diameter consisting of some ratchets on chuck, described steel rope is walked around track adjusting wheel one rear flank and is wrapped on expanding force regulating mechanism, and then rap around on track adjusting wheel opposite side, swelling device also comprises the expanding force detector (8) that detects wire rope tension-force, described expanding force detector is connected on a controller (9), controller is connected with elevator control cabinet (10), elevator control cabinet control linkage expanding force regulating mechanism.
2. a kind of novel swelling device according to claim 1, the chuck (6) that it is characterized in that described expanding force regulating mechanism is rotationally connected guide roller (1) below, described ratchet (13) is provided with four, ratchet front end is circular arc panel, the cylindrical winding axle of the common formation of panel of four ratchet front ends, on ratchet, be provided with orienting lug, on chuck relevant position, be provided with the guide groove radially extending, orienting lug is embedded in guide groove, on ratchet rear end, be provided with and drive the flexible automated drive of ratchet, automated drive is controlled to be connected on elevator control cabinet (10).
3. a kind of novel swelling device according to claim 2, it is characterized in that described expanding force regulating mechanism is provided with two, be respectively main expanding force regulating mechanism (4) and from expanding force regulating mechanism (5), two expanding force regulating mechanisms are arranged on track adjusting wheel below symmetrically and side by side, described steel rope is walked around after track adjusting wheel by inner side on the winding axle entering at main expanding force regulating mechanism, steel rope lays out parallel extending from the winding axle of expanding force regulating mechanism after the winding axle of main expanding force regulating mechanism, and by outside around entering on the winding axle from expanding force regulating mechanism, steel rope lays out from the winding axle of expanding force regulating mechanism on track adjusting wheel opposite side.
4. according to a kind of novel swelling device described in claim 1 or 2 or 3, it is characterized in that described steel rope (3) is wound around a circle or is wound around multi-turn on the winding axle of expanding force regulating mechanism.
5. a kind of novel swelling device according to claim 3, is characterized in that the described expanding force regulating mechanism winding Zhou center of circle is less than winding axle radius and track adjusting wheel radius sum to the distance of the vertical line at track adjusting wheel (1) place, the center of circle.
6. according to a kind of novel swelling device described in claim 1 or 2 or 3, it is characterized in that being provided with on described chuck (6) safety switch (12), safety switch is arranged on and is wound around the end position that axle increases, safety switch has trigger end, trigger end is towards being wound around axle, and described safety switch is connected in elevator safety loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320442257.3U CN203392684U (en) | 2013-07-22 | 2013-07-22 | Novel stretching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320442257.3U CN203392684U (en) | 2013-07-22 | 2013-07-22 | Novel stretching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203392684U true CN203392684U (en) | 2014-01-15 |
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ID=49904231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320442257.3U Expired - Lifetime CN203392684U (en) | 2013-07-22 | 2013-07-22 | Novel stretching device |
Country Status (1)
| Country | Link |
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| CN (1) | CN203392684U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104692212A (en) * | 2015-03-17 | 2015-06-10 | 江南嘉捷电梯股份有限公司 | Elevator tensioner |
| CN110877848A (en) * | 2018-09-05 | 2020-03-13 | 通力股份公司 | Elevator driving mechanism and elevator |
-
2013
- 2013-07-22 CN CN201320442257.3U patent/CN203392684U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104692212A (en) * | 2015-03-17 | 2015-06-10 | 江南嘉捷电梯股份有限公司 | Elevator tensioner |
| CN110877848A (en) * | 2018-09-05 | 2020-03-13 | 通力股份公司 | Elevator driving mechanism and elevator |
| CN110877848B (en) * | 2018-09-05 | 2023-02-03 | 通力股份公司 | Elevator driving mechanism and elevator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 310019 No. nine, 28 Ring Road, Hangzhou, Zhejiang, Jianggan District Patentee after: Otis Electrical Elevator Co.,Ltd. Address before: 310019 No. nine, 28 Ring Road, Hangzhou, Zhejiang, Jianggan District Patentee before: Xizi Otis Elevator Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140115 |