CN201066632Y - Adjustable stroke limit switch - Google Patents
Adjustable stroke limit switch Download PDFInfo
- Publication number
- CN201066632Y CN201066632Y CNU2007201550080U CN200720155008U CN201066632Y CN 201066632 Y CN201066632 Y CN 201066632Y CN U2007201550080 U CNU2007201550080 U CN U2007201550080U CN 200720155008 U CN200720155008 U CN 200720155008U CN 201066632 Y CN201066632 Y CN 201066632Y
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- CN
- China
- Prior art keywords
- switch
- motor
- normally closed
- stage worm
- thread form
- 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 - Lifetime
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Abstract
The utility model relates to an adjustable travel limit switch used for controlling the travel location of a moving object driven by a motor. The utility model is characterized in that the switch comprises a casing (1), an input shaft (2) arranged on the drive transmission shaft of the motor, a first level worm (3) arranged inside the casing (1), a first level worm wheel (4) meshed with the first level worm (3), a second level worm (5) which is coaxial with the first worm wheel (4), a second level worm wheel (6) meshed with the second level worm (5), an output shaft iron bar (7) which is coaxial with the second level worm wheel (6) and is extended out of the casing (1), a protective case (8) fixed in the casing (1), a tooth-shaped switch regulating seat (9) arranged inside the protective case (8), and two normal-closed switches (10, 11) arranged on the tooth-shaped switch regulating seat (9). The wire connection points on the normal-closed switches (10, 11) are connected with the control circuit of a control motor by a wire. The utility model has wide application scope, in particular applicable to the control of the gantry frame nacelle used for construction in building industry and the position control of the two ends of an object when the object automatically moves out and home driven by the motor.
Description
Technical field
The utility model be a kind of to the motor driven object time control the object that drives at the adjustable travel limit switch of its travel position of the time limit system of advancing.
Background technology
At present, be installed in extreme position in employings such as the employed limit switch of mechanical field, travel switches, by the direct or indirect movement device that touches limit switch of electric motor driven object, make switch motion, cut off the power supply on the Motor Control circuit, reach the stroke limit effect of control object.But these limit switches have certain defective: one: because of electric motor driven object when touching these limit switches, object has certain inertia distance, the slow a little object of these limit switches actions will break the movement device of limit switch personnel operation unsafe factor when strengthening maintenance cost and maintain and replace switch.Its two: because of it is installed in object extreme limit of travel position, certain distance is arranged, need lay pipeline and lead during installation, the unsafe factor when having strengthened construction cost and personnel operation from the Motor Control element.Also have some limit switches can be installed on the nearer position of motor in the market, but the complicated volume of its project organization is big, there is certain limitation in control range and field.
The utility model content
The purpose of the utility model design provide a kind of simple in structure, volume is little, control range is big, and is applied widely, can adjust extreme position at any time, and the adjustable travel limit switch put of stroke limit that can random two-way adjustment control object.
The purpose of this utility model realizes by following structure:
A kind of adjustable travel limit switch, it is characterized in that it by shell, be positioned on the power shaft on the motor driven power transmission shaft, be positioned on one-level worm screw in the shell, with the first-stage worm gear of one-level worm engaging, with the coaxial second-stage worm of first-stage worm gear, bump iron with the second-stage worm gear of second-stage worm engagement, output shaft coaxial with second-stage worm gear and that stretch out shell, the protecting crust that is fixed together with shell, be installed in the interior thread form switch adjustment seat of protecting crust, be installed in two normally closed switchs compositions on the thread form switch adjustment seat; Wiring point on the normally closed switch is connected with the control circuit of lead with the control motor;
Described power shaft one end that is installed on the motor shaft is that wire connection, an end are joggle;
The described thread form switch adjustment seat that is installed in the protecting crust is circular, which is provided with normally closed switch lock hole, support fixation seat and slidable adjustment tooth;
Described thread form switch adjustment seat be provided with two can be on thread form switch adjustment seat the normally closed switch of slidable adjustment, switch is provided with lock screw and elastic steel ball;
Described one-level worm screw, second-stage worm are single start worm.
The beneficial effects of the utility model are: applied widely, be specially adapted to the building industry construction need be done the spacing control in automatic back and forth movement two ends with the security control and the object of portal frame hanging basket under the dragging of motor adjustable travel limit switch.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described in further detail:
Fig. 1: be structure construction schematic diagram of the present utility model;
Fig. 2: A-A is to cutaway view;
Fig. 3: B-B is to cutaway view;
Fig. 4: be thread form switch adjustment seat;
Fig. 5: be the one way control winding diagram of the utility model control motor circuit;
Fig. 6: be the roundtrip control winding diagram of the utility model control motor circuit.
Embodiment
As shown in Figure 1, be that the example preface is stated with control portal frame hanging basket travel position, an end of power shaft 2 is installed on the spool shaft that drives portal frame hanging basket hoist engine and (connects) other end and one-level worm screw 3 joggles with one heart.One-level worm screw 3 is a single start worm, and its rotation axis sees through shell 1 and power shaft 2 joggles by Bearing Installation end in shell 1.First- stage worm gear 4 and 3 engagements of one-level worm screw.First-stage worm gear 4 and second-stage worm 5 are the coaxial combination body, and second-stage worm 5 is a single start worm, by Bearing Installation in shell 1.Second-stage worm gear 6 and second-stage worm 5 engagements.The rotation axis of second-stage worm gear 6 and output shaft bump iron 7 on same axle, and output shaft bumps iron 7 and stretches out outside the shell 1, by Bearing Installation in shell 1.Protecting crust 8 is fixed on the rectangular enclosure 1.Thread form switch adjustment seat 9 is installed in the protecting crust 8, and this thread form switch adjustment seat 9 is circular, and the thread form tooth is established at the edge, and it is concentric that rotation axis on its center of circle and the second-stage worm gear 6 and output shaft bump iron 7.Thread form switch adjustment seat 9 is provided with the normally closed switch 10 and/or 11 that normally closed switch lock hole 12, support fixation seat 13, slidable adjustment tooth 14 and two can slide in thread form switch adjustment seat adjusted.Thread form switch adjustment seat 9 is fixedlyed connected with shell 1 by three support fixation seats 13, and the center of circle of thread form switch adjustment seat 9 is concentric with the center of circle that output shaft bumps iron 7, and normally closed switch lock hole 12 slides with the lock screw on the normally closed switch 10 and/or 11 and rivets.Elastic steel ball on slidable adjustment tooth 14 and the normally closed switch 10 and/or 11 is slidingly connected.Two normally closed switchs 10 that can slide in thread form switch adjustment seat adjusted and/or 11 can be adjusted fixing on thread form switch adjustment seat according to setting needs in 360 ° of scopes.Two wiring points on the normally closed switch 10 and/or 11 are connected in series with the control circuit of controlling motor.Control principle: when lifting drum rotating band driven input shaft 2 rotates, power shaft 2 and one-level worm screw 3 are rotated synchronously, one-level worm screw 3 drives first-stage worm gear 4 and second-stage worm 5 is rotated, second-stage worm 5 drives second-stage worm gear 6 and rotates, finally bump iron 7 and thread form switch adjustment seat 9 in, does the round rotation of 360 ° of scopes to be positioned on output shaft on second-stage worm gear 6 rotation axiss, touch the contact on two normally closed switchs 10 and/or 11 on the thread form switch adjustment seat, make normally closed switch 10 and/or 11 actions, cut off the power supply on the control Motor Control circuit, to the purpose of control portal frame hanging basket stroke limit.
The adjustable travel limit switch is controlled the distance of object stroke: one-level worm screw 3, second-stage worm 5 are single start worm, the number of teeth of first-stage worm gear 4, second-stage worm gear 6 is 9 teeth above (also can make the adjustable travel limit switch of other tooth worm gears according to object stroke needs), design the worm gear of the different numbers of teeth, just can make the adjustable travel limit switch of different model, control different distance.Because of the distance of controlling the object stroke is exactly that output shaft bumps the radian that iron 7 rotates, control largest object stroke distances is exactly that output shaft bumps 360 ° of iron one weeks of 7 rotations.With first-stage worm gear 4, the number of teeth of second-stage worm gear 6 all is that 17 teeth calculate.Second-stage worm gear 6 and output shaft bump 7 and rotate 360 °, second-stage worm 5 and first-stage worm gear 4 just need to rotate for 17 weeks, one-level worm screw 3 just needs to rotate 17 * 17=280 week, just drive all numbers that portal frame hanging basket lifting drum is rotated, calculate 0.25m * 3.14 * 289 weeks=227m with lifting drum diameter 0.25m (do not contain lifting drum and be involved in the diameter that steel wire rope increases).So the adjustable travel limit switch largest object stroke distances of this model is 227m, in the 227m scope, the arbitrary spacing position of object in the 227m stroke just can be controlled in normally closed switch 10 on the adjusting thread form switch adjustment seat 9 and/or 11 position.
Installing and using of adjustable travel limit switch:
(1), install: an end of power shaft 2 is installed in (connection with one heart) on the spool shaft that drives portal frame hanging basket hoist engine, and one-level worm screw 3 joggles on the other end and the shell 1 are fixed on shell 1 on the lifting drum position then.Arbitrary normally closed switch 10 on the thread form switch adjustment seat 9 in the protecting crust 8 or/and two wiring points of 11 are connected in series with the control circuit of lead with the control motor, is installed.
(2), debugging: will carry out field adjustable after the adjustable travel limit switch installs, when a direction of independent control spacing, referring to Fig. 1.The hoist engine hanging basket is risen to the spacing location brake of needs, adjust in the protecting crust 8 any one normally closed switch 10 on the thread form switch adjustment seats 9 or 11 position then, make contact on normally closed switch 10 or 11 touch output shaft and bump the iron that bumps on the iron 7, allow normally closed switch 10 or 11 be in normally open, the lock screw of tightening on normally closed switch 10 or 11 is fixed this switch, when the portal frame hanging basket descends, normally closed switch 10 or 11 returns to normally off again, when the portal frame hanging basket rises to this position, the iron that bumps that output shaft bumps on the iron 7 touches contact on normally closed switch 10 or 11 again, normally closed switch 10 or 11 disconnects again, cut off the power supply on the control Motor Control circuit, the portal frame hanging basket stops to rise and reaches spacing purpose.
When if motor-driven object needs do back and forth movement or needs the positive and negative rotation of motor in stroke, referring to Fig. 6.Set the revolution of spacing point in two ends or motor, two normally closed switchs 10 and 11 on the thread form switch adjustment seat 9 in the protecting crust 8 are adjusted to desired location.How to adjust with adjusting the portal frame hanging basket described.Then the wiring point on two normally closed switchs is connected in series with the interlocking normally closed interlock on lead and the Motor Control circuit and gets final product.
The utility model is applied widely, the stroke limit control of portal frame hanging basket when being specially adapted to the building industry construction.
Claims (5)
1. adjustable travel limit switch, it is characterized in that it is by shell (1), be positioned on the power shaft (2) on the motor driven power transmission shaft, be positioned on the one-level worm screw (3) in the shell (1), first-stage worm gear (4) with one-level worm screw (3) engagement, the second-stage worm (5) coaxial with first-stage worm gear (4), second-stage worm gear (6) with second-stage worm (5) engagement, output shaft coaxial with second-stage worm gear (6) and that stretch out shell (1) bumps iron (7), the protecting crust (8) that is fixed together with shell (1), be installed in the thread form switch adjustment seat (9) in the protecting crust (8), be installed in two normally closed switchs (10 on the thread form switch adjustment seat (9), 11) form; Wiring point on the normally closed switch (10,11) is connected with the control circuit of lead with the control motor.
2. adjustable travel limit switch according to claim 1, power shaft (2) one ends that it is characterized in that being installed on the motor shaft are that wire connection, an end are joggle.
3. adjustable travel limit switch according to claim 1, the thread form switch adjustment seat (9) that it is characterized in that being installed in the protecting crust (8) is circular, which is provided with normally closed switch lock hole (12), support fixation seat (13) and slidable adjustment tooth (14).
4. claim 1 or 3 described adjustable travel limit switches is characterized in that thread form switch adjustment seat (9) is provided with two normally closed switchs (10,11) that can go up slidable adjustment in thread form switch adjustment seat (9), and switch is provided with lock screw and elastic steel ball.
5. the described adjustable travel limit switch of claim 1 is characterized in that one-level worm screw (3), second-stage worm (5) are single start worm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201550080U CN201066632Y (en) | 2007-07-19 | 2007-07-19 | Adjustable stroke limit switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201550080U CN201066632Y (en) | 2007-07-19 | 2007-07-19 | Adjustable stroke limit switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201066632Y true CN201066632Y (en) | 2008-05-28 |
Family
ID=39483815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201550080U Expired - Lifetime CN201066632Y (en) | 2007-07-19 | 2007-07-19 | Adjustable stroke limit switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201066632Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102354253A (en) * | 2011-07-15 | 2012-02-15 | 中国电子科技集团公司第二十六研究所 | Inhibiting device with over-360 degree rotation stroke |
| CN103811203A (en) * | 2012-11-09 | 2014-05-21 | 周家龙 | Limit switch adjusting apparatus of high-voltage isolating switch electric operating mechanism |
| WO2020056625A1 (en) * | 2018-09-19 | 2020-03-26 | 炼马机电（东莞）有限公司 | Driver |
-
2007
- 2007-07-19 CN CNU2007201550080U patent/CN201066632Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102354253A (en) * | 2011-07-15 | 2012-02-15 | 中国电子科技集团公司第二十六研究所 | Inhibiting device with over-360 degree rotation stroke |
| CN102354253B (en) * | 2011-07-15 | 2013-05-08 | 中国电子科技集团公司第二十六研究所 | Inhibiting device with over-360 degree rotation stroke |
| CN103811203A (en) * | 2012-11-09 | 2014-05-21 | 周家龙 | Limit switch adjusting apparatus of high-voltage isolating switch electric operating mechanism |
| WO2020056625A1 (en) * | 2018-09-19 | 2020-03-26 | 炼马机电（东莞）有限公司 | Driver |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Lu Gang Road Show in 071000 districts in Hebei city of Baoding province No. 125 Patentee after: Hebei construction group Limited by Share Ltd Address before: 071051, No. 54 West 329, new urban district, Hebei, Baoding Patentee before: Heibei Construction Group Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080528 |