CN201367329Y - Mechanical overload protection device of electric capstan - Google Patents
Mechanical overload protection device of electric capstan Download PDFInfo
- Publication number
- CN201367329Y CN201367329Y CNU2009201144457U CN200920114445U CN201367329Y CN 201367329 Y CN201367329 Y CN 201367329Y CN U2009201144457 U CNU2009201144457 U CN U2009201144457U CN 200920114445 U CN200920114445 U CN 200920114445U CN 201367329 Y CN201367329 Y CN 201367329Y
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- CN
- China
- Prior art keywords
- permanent seat
- protection device
- electric capstan
- fixed plate
- overload protection
- 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 - Fee Related
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- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
Abstract
The utility model discloses a mechanical overload protection device of an electric capstan. The protection device comprises a fixing seat (2) and a block nut (9), wherein the fixing seat (2) is connected with the output shaft of an electric motor; an elastic device, a gasket (4), a fixing sheet (5), four roll balls (6), a centrifugal sheet (7) and an adjustment sheet (8) are sequentially arranged in the inner cavity of the fixing seat (2); the centrifugal sheet (7) is connected with a braking device; the end surface of the fixing sheet (5) is provided with blind holes I (5.1), and the other end thereof pushes against the gasket (4); the four roll balls (6) are respectively and tightly matched in the blind holes I (5.1); four blind holes II (7.1) are arranged on the end surface of the centrifugal sheet (7); the adjustment sheet (8) is connected with the fixing seat (2) by screw thread, and the other end of the adjustment sheet (8) is connected with the block nut (9) by screw thread; and a locating device is arranged on the fixing seat (2). When in overload running, the mechanical overload protection device can prevent the electric motor from being damaged and can not cause damage to a reducer gear, a vehicle frame and a steel cable. In addition, the utility model has the advantages that the cost is low, the device can protect the electric capstan rapidly, and the working reliability is good.
Description
Technical field
The utility model relates to the capstan winch technical field, specifically is a kind of machine overload protection device of electric capstan.
Background technology
Electric capstan is mainly used in cross country car, agricultural vehicle, yacht and other special vehicles, is the self-protection and the draw gear of vehicle, boats and ships.In the needs towage, rescue comprise the field save oneself etc. driving, when navigating situation, electric capstan plays very big effect.Each electric capstan has a specified pulling force, and the pulling force when using will transship when surpassing specified pulling force.But the electric capstan of prior art does not have the machine overload protection device; its structure generally comprises motor; epicyclic reduction gear etc.; motor and epicyclic reduction gear directly link together by brake equipment; so just have following shortcoming: when electric capstan in when overload; electric current can become big moment; cause motor to burn out; and can cause the gear of the epicyclic reduction gear in the electric capstan to damage; the pulling force that vehicle frame bears is excessive; vehicle frame and electric capstan are caused separate and damage; while also can make steel rope surpass holding capacity and damage, and long-term overload is used even ruptured.Electric capstan is if adopt the circuit overloads fender guard; when overload running; need to detect earlier the overload phenomenon; and then take appropriate measures; so just there is certain time-delay, can not retarder stopped operating, so there is potential safety hazard in generation when transshipping; thereby this class circuit overloads fender guard poor reliability also makes the circuit complexity of electric capstan.Present user is 10000 pounds specified pulling force if desired, damages in order not make electric capstan overload, generally buys the electric capstan of 12000 pounds or bigger specified pulling force, and cost is increased.
The utility model content
The technical problems to be solved in the utility model is; provide a kind of electric capstan when overload running, can avoid that motor is burnt out, not low to reducer gear, vehicle frame, damage of steel cable and cost, the machine overload protection device that can protect electric capstan, electric capstan that its functional reliability is good rapidly.
The technical solution of the utility model is, a kind of machine overload protection device with electric capstan of following structure is provided, comprise and motor output shaft bonded assembly permanent seat, block nut, the internal cavity of described permanent seat be provided with successively from the inside to surface springing, pad, fixed plate, four balls, with brake equipment bonded assembly centrifugal film, adjustment sheet; The end face of one end of described springing and the internal cavity of permanent seat offsets, and its other end and pad offset; The end face of one end of described fixed plate is provided with four axial blind holes along the circumference five equilibrium, and its other end and pad offset; Described four balls difference close-fitting is in four blind hole I; The end face of one end of described centrifugal film is provided with four blind hole II that can distinguish ccontaining four balls; One end of described adjustment sheet and the centre hole of permanent seat are spirally connected, and its other end is spirally connected with the block nut that is close to the permanent seat end face; Described permanent seat is provided with the registration device that a restriction fixed plate rotates in a circumferential direction.
After adopting above structure; the utility model compared with prior art; have the following advantages: owing between the output shaft of motor and brake equipment, be provided with a machine overload protection device; the torsion of motor output overcomes the tension force of springing when overload running; make and originally rely on ball to be positioned at producing relative rotation together with brake equipment bonded assembly centrifugal film with motor output shaft bonded assembly permanent seat; even the motor of electric capstan skids; do not make electric current moment change big; avoid motor to be burnt out; and the torsion of motor output is not delivered to retarder; can not cause the gear of the epicyclic reduction gear in the electric capstan to damage; also the pulling force that vehicle frame is born is excessive and cause damage, also can not make steel rope surpass holding capacity simultaneously and damages.Machine overload protection device of the present utility model can be instant the protection electric capstan in the safe handling of overload, its physical construction good reliability, as long as and the user when buying electric capstan, meet specified pulling force, make cost low.
As improvement, described springing is the seat cushion that viton is made, and its better elastic can make fixed plate do high-revolving axial motion when overload, and good temperature resistance can not wear out it in the environment of a large amount of heats that high-speed cruising produces simultaneously.
Description of drawings
Accompanying drawing 1 is the exploded perspective view of the machine overload protection device of electric capstan of the present utility model.
Accompanying drawing 2 is the assembling scheme drawing of the machine overload protection device of electric capstan of the present utility model.
Accompanying drawing 3 is the A-A generalized section of Fig. 2.
As shown in the figure: 1, screw, 2, permanent seat, 2.1, tapped through hole, 3, cushion, 4, pad, 5, fixed plate, 5.1, blind hole I, 5.2, breach, 6, ball, 7, centrifugal film, 7.1, blind hole II, 8, adjustment sheet, 9, block nut.
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
As Fig. 1, Fig. 2, shown in Figure 3, the machine overload protection device of electric capstan of the present utility model, comprise and motor output shaft bonded assembly permanent seat 2, block nut 9, the internal cavity of described permanent seat 2 be provided with successively from the inside to surface springing, pad 4, fixed plate 5, four balls 6, with brake equipment bonded assembly centrifugal film 7, adjustment sheet 8; Be that the machine overload protection device is mounted between motor output shaft and the brake equipment; described and motor output shaft bonded assembly permanent seat 2 is meant; one end of described permanent seat 2 is provided with the hole that an energy cooperates with motor output shaft; described and brake equipment bonded assembly centrifugal film 7 is meant; described centrifugal film 7 is provided with the interior hexagonal through hole that an energy cooperates with brake equipment; described adjustment sheet 7 is provided with an interior hexagonal through hole that can allow brake equipment pass; its cross-sectional area makes brake equipment realize interlock and not influence adjustment sheet 8 with centrifugal film 7 greater than the interior hexagonal through hole on the centrifugal film 7.The end face of one end of described springing and the internal cavity of permanent seat 2 offsets, and its other end and pad 4 offset; Described springing is meant the seat cushion of being made by viton 3, and under the normality, seat cushion 3 is compressed, has certain force of strain.The end face of one end of described fixed plate 5 is provided with four axial blind hole I 5.1 along the circumference five equilibrium, and described four balls, 6 difference close-fittings are in four blind hole I 5.1; The end face of one end of described centrifugal film 7 is provided with four blind hole II 7.1 that can distinguish ccontaining four balls 6.When not transshipping, fixed plate 5 is positioned at centrifugal film 7 by ball 6; When overload, ball 6 breaks away from separations from the blind hole II7.1 of centrifugal film 7, offsets with the end face of centrifugal film 7, and moves in a circle along the end face of centrifugal film 7, and centrifugal film 7 and fixed plate 5 relatively rotate at this moment.One end of described adjustment sheet 8 and the centre hole of permanent seat 2 are spirally connected; its other end is spirally connected with the block nut 9 that is close to permanent seat 2 end faces; can adjust the amount of compression of seat cushion 3 like this by adjustment sheet 8; adjustment sheet 8 screws in to the internal cavity of permanent seat 2 more; the amount of compression of the amount of compression of its seat cushion 3 is big more; the specified pulling force of the machine overload protection device of its electric capstan is also big more, otherwise more little.Described permanent seat 2 is provided with the registration device that a restriction fixed plate 5 rotates in a circumferential direction.
Described registration device is a screw 1, the circumference of described permanent seat 2 is provided with a radially tapped through hole 2.1, described fixed plate 5 excircles are provided with a radial indentation 5.2, described breach 5.2 axially connects the both ends of the surface of fixed plate 5, described screw 1 passes tapped through hole 2.1 backs and embeds breach 5.2, fixed plate 5 is positioned at permanent seat 2, and when overload, fixed plate 5 is axially moved.
When electric capstan does not transship, rely on the tension force of compressed seat cushion 3, centrifugal film 7 is positioned at fixed plate 5 by ball 6 links, motor output passes to retarder; Electric capstan when overload,, centrifugal film 7 is relatively rotated by ball 6 and fixed plate 5 when torsion has overcome the tension force of compressed seat cushion 3, at this moment, ball 6 breaks away from from the blind hole II7.1 of centrifugal film 7, and fixed plate 5 axially moves, be that motor skids, do not pass to retarder.
Claims (3)
1, a kind of machine overload protection device of electric capstan, it is characterized in that: comprise and motor output shaft bonded assembly permanent seat (2), block nut (9), the internal cavity of described permanent seat (2) be provided with successively from the inside to surface springing, pad (4), fixed plate (5), four balls (6), with brake equipment bonded assembly centrifugal film (7), adjustment sheet (8); The end face of the internal cavity of one end of described springing and permanent seat (2) offsets, and its other end and pad (4) offset; The end face of one end of described fixed plate (5) is provided with four axial blind hole I (5.1) along the circumference five equilibrium, and its other end and pad (4) offset; Described four balls (6) difference close-fitting is in four blind hole I (5.1); The end face of one end of described centrifugal film (7) is provided with four blind hole II (7.1) that can distinguish ccontaining four balls (6); The centre hole of one end of described adjustment sheet (8) and permanent seat (2) is spirally connected, and its other end is spirally connected with the block nut (9) that is close to permanent seat (2) end face; Described permanent seat (2) is provided with the registration device that a restriction fixed plate (5) rotates in a circumferential direction.
2, the machine overload protection device of electric capstan according to claim 1; it is characterized in that: described registration device is a screw (1); the circumference of described permanent seat (2) is provided with a radially tapped through hole (2.1); described fixed plate (5) excircle is provided with a radial indentation (5.2); described breach (5.2) axially connects the both ends of the surface of fixed plate (5), and described screw (1) passes tapped through hole (2.1) back and embeds breach (5.2).
3, the machine overload protection device of electric capstan according to claim 1 is characterized in that: described springing is the seat cushion (3) that viton is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201144457U CN201367329Y (en) | 2009-02-23 | 2009-02-23 | Mechanical overload protection device of electric capstan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201144457U CN201367329Y (en) | 2009-02-23 | 2009-02-23 | Mechanical overload protection device of electric capstan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201367329Y true CN201367329Y (en) | 2009-12-23 |
Family
ID=41486224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009201144457U Expired - Fee Related CN201367329Y (en) | 2009-02-23 | 2009-02-23 | Mechanical overload protection device of electric capstan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201367329Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105692482A (en) * | 2014-11-25 | 2016-06-22 | 力山工业股份有限公司 | Overload protection device for winch and winch with overload protection device |
| CN110217711A (en) * | 2019-05-31 | 2019-09-10 | 淮南巧天机械设备技术有限公司 | A kind of single-beam crane electric block |
-
2009
- 2009-02-23 CN CNU2009201144457U patent/CN201367329Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105692482A (en) * | 2014-11-25 | 2016-06-22 | 力山工业股份有限公司 | Overload protection device for winch and winch with overload protection device |
| CN110217711A (en) * | 2019-05-31 | 2019-09-10 | 淮南巧天机械设备技术有限公司 | A kind of single-beam crane electric block |
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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: 20091223 Termination date: 20140223 |