CN203130953U - Anti-overloading protection mechanism for vertical screw driving device - Google Patents
Anti-overloading protection mechanism for vertical screw driving device Download PDFInfo
- Publication number
- CN203130953U CN203130953U CN 201320108081 CN201320108081U CN203130953U CN 203130953 U CN203130953 U CN 203130953U CN 201320108081 CN201320108081 CN 201320108081 CN 201320108081 U CN201320108081 U CN 201320108081U CN 203130953 U CN203130953 U CN 203130953U
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- CN
- China
- Prior art keywords
- nut sleeve
- screw mandrel
- slide unit
- protection mechanism
- screw
- 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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Abstract
The utility model relates to an anti-overloading protection mechanism for a vertical screw driving device. The anti-overloading protection mechanism comprises a motor, a reducer casing, a sliding table carriage, a sliding table, a screw and a guide slide. The anti-overloading protection mechanism is characterized in that a nut sleeve with a step at the lower end is disposed in a connecting hole of the screw and a connecting hole of the sliding table, an internal thread of the nut sleeve is connected with a thread of the screw, the outer periphery of the nut sleeve is in sliding fit with a fitting surface of the connecting hole of the sliding table, the lower step of the nut sleeve is fixedly connected with a nut sleeve holder arranged below the nut sleeve, two ends of an inner hole of the nut sleeve are provided with guide holes, a screw guide segment is arranged at the upper end of the screw, an adjustable support rod is arranged at the lower end of the sliding table, an elastic cushion is arranged on a lower holder of the sliding table carriage. According to the technical scheme, anti-overloading protection for the vertical screw driving mechanism is achieved.
Description
Technical field
The utility model relates to the screw mandrel transmission in the mechanical transmission fields, especially a kind of antioverloading protection mechanism of rectilinear spindle gear.
Background technique
Usually use the screw mandrel drive mechanism in the mechanical transmission, namely adopt the rotation of driven by motor screw mandrel, do axial horizontal or vertical movement by nut and operation mechanism on the drive screw mandrel that rotatablely moves of screw mandrel.Existing spindle gear is simple in structure, generally do not set the antioverloading protection mechanism, the displacement distance of screw mandrel transmission is mainly by manually grasping, be easy to generate mechanical failure, such as: when the screw mandrel transmission makes its operation mechanism arrive position, top or position, the end, if the movement of the mechanism that in time do not quit work, stuck situation can appear in screw mandrel and nut, and stall can appear in the motor that drives the screw mandrel transmission, because the motor rotation blockage electric current is higher, and the working life that may reduce motor; If stuck situation often appears in screw mandrel, will speed up the wearing and tearing of screw mandrel and nut, reduce the operating accuracy of spindle gear, directly influence normal operation and the production of equipment.
Summary of the invention
The purpose of this utility model is for solving the deficiency that prior art exists, proposing a kind of rectilinear spindle gear antioverloading protection mechanism.
The technical solution adopted in the utility model is: rectilinear spindle gear antioverloading protection mechanism; comprise motor; speed reducer; carriage saddle; slide unit; screw mandrel and directive slide track; motor and speed reducer are located at the upper end of carriage saddle; two directive slide tracks by carriage saddle up and down the fixed base at two ends be located at carriage saddle above; the upper end of screw mandrel links to each other with the output shaft of speed reducer; the lower end of screw mandrel connects slide unit; the bearing hole at slide unit two ends cooperates with the directive slide track that is located at its left and right sides respectively; slide unit moves up and down at the drive lower edge of screw mandrel directive slide track; it is characterized in that being provided with the nut sleeve that a lower end has step in the attachment hole of described screw mandrel and slide unit; the internal thread of nut sleeve is connected with the screw thread of screw mandrel; the fitting surface of the cylindrical of described nut sleeve and the attachment hole of slide unit is for being slidingly matched; the lower end step of described nut sleeve is connected mutually with the nut sleeve fixed base that is located at its below, and the two ends of described nut sleeve endoporus are provided with the guiding bullport.
The upper end of described screw mandrel is provided with the screw mandrel guide section.
The lower end of described slide unit is provided with Adjustable bracing bar.
The lower fixed seat of described carriage saddle is provided with elastic cushion block, and elastic cushion block is relative with the lower end surface of nut sleeve fixed base.
The beneficial effects of the utility model and characteristics are: by between the screw mandrel of rectilinear lead screw transmission mechanism and slide unit attachment hole nut sleeve being set; offer technological schemes such as guiding bullport at the two ends of nut sleeve endoporus, solved the antioverloading protection problem of rectilinear lead screw transmission mechanism.Wherein: do not do between nut sleeve and the slide unit to be connected firmly, and just hold the slide unit of driving mechanism.Move to outside the transmission range when nut sleeve is descending, the front end of screw mandrel falls in the guiding bullport of nut sleeve, screw mandrel idle running, and the following action edge of nut sleeve is cut off, and is compressed in simultaneously on the elastic cushion block, and slide unit is no longer descending; When the screw mandrel opposite spin, utilize the spring-back force of elastic cushion block that nut sleeve is pushed screw mandrel and move up, and drive slide unit and move up.Move to outside the transmission range when nut sleeve is up, nut sleeve rests on the guide section of screw mandrel upper end, though the screw mandrel of this moment continues rotation, the power of nut sleeve is cut off, makes slide unit no longer up; When the screw mandrel opposite spin, nut sleeve imports screw mandrel by the gravity of self, and slide unit enters downstream state.
Lower end at slide unit arranges Adjustable bracing bar, can adjust the descending moving range of slide unit as required, when slide unit came downwards to desired location, Adjustable bracing bar was supported on the weight of slide unit on the lower fixed seat of carriage saddle, and making can be by excessive compression between slide unit and the elastic cushion block.
Description of drawings
Fig. 1 is the structural representation of one of embodiment when slide unit is in lower position;
Fig. 2 is the structural representation of one of embodiment when slide unit is in upper position;
Fig. 3 is nut sleeve structure sectional view of the present utility model;
Fig. 4 is embodiment's two structural representations when slide unit is in lower position;
Fig. 5 is embodiment's two structural representations when slide unit is in upper position.
Number in the figure is represented respectively: 1-motor, 2-speed reducer, 3-carriage saddle, 4-directive slide track, the 5-screw mandrel, 6-slide unit, 7-nut sleeve, 8-nut sleeve fixed base, 9-elastic cushion block, 10-Adjustable bracing bar, the 11-upper fixed seat, 12-lower fixed seat, 13-screw mandrel guide section, 14-slide unit bearing, the 15-bullport that leads, the 16-bearing, the 17-dirt-proof boot, 18-operation mechanism connecting rod, 19-operation mechanism is head fixedly.
Embodiment
The utility model will be further described below in conjunction with accompanying drawing:
Fig. 1, Figure 2 shows that an embodiment of the utility model basic structure, wherein, rectilinear spindle gear is mainly by motor 1, speed reducer 2, carriage saddle 3, slide unit 6, screw mandrel 5 and directive slide track 4 are formed, motor 1 and speed reducer 2 are located at the upper end of carriage saddle 3, two directive slide tracks 4 pass through the fixed base 11 at carriage saddle two ends about in the of 3,12 be located at carriage saddle above, the upper end of screw mandrel 5 links to each other with the output shaft of speed reducer 2, the bearing hole that is located at the slide unit bearing 14 at slide unit 6 two ends matches with the directive slide track 4 that is located at its left and right sides respectively, and slide unit 6 moves up and down at the drive lower edge of screw mandrel 5 directive slide track 4.The action of spindle gear can be controlled by mechanical, electric or manual mode.
The utility model is provided with nut sleeve 7(that a lower end has a step as shown in Figure 3 in the attachment hole of screw mandrel 5 and slide unit 6), the internal thread of nut sleeve 7 is connected with the screw thread of screw mandrel 5, and the fitting surface of the attachment hole of the cylindrical of nut sleeve 7 and slide unit 6 adopts and is slidingly matched.The lower end step of described nut sleeve 7 is connected mutually with the nut sleeve fixed base 8 that is located at its below, one end of nut sleeve fixed base 8 links to each other with a side directive slide track 4 by attachment hole or bayonet socket, makes nut sleeve fixed base 8 and nut sleeve 7 one and moves up and down along directive slide track 4.Can adopt multiple Placement between described nut sleeve 7 and the nut sleeve fixed base 8, as making square the lower end step of nut sleeve 7 or polygonal, match with the attachment hole of nut sleeve fixed base 8 same shapes, also can adopt the mode that adds set screw, its objective is to prevent that nut sleeve 7 from rotating with the rotation of screw mandrel 5.In addition, the utility model is established guiding bullport 15 at the two ends of nut sleeve 7 endoporus; Establish screw mandrel guide section 13 in the upper end of screw mandrel 5; Establish Adjustable bracing bar 10 in the lower end of slide unit 6; Lower fixed seat 12 at carriage saddle 3 arranges elastic cushion block 9, and elastic cushion block 9 is relative with the lower end surface of nut sleeve fixed base 8, and elastic cushion block 9 can adopt schemes such as elastic block rubber or spring to make.Constitute the antioverloading protection mechanism of a complete rectilinear spindle gear thus.
Fig. 4, Fig. 5 are the embodiments that the utility model connects operation mechanism outward, and wherein Fig. 4 is the structural representation when slide unit is in lower position, and Fig. 5 is the structural representation when slide unit is in upper position, and its basic structure and a last embodiment are identical.Difference is: slide unit 6 is connected with operation mechanism's connecting rod 18, the bearing hole that operation mechanism's connecting rod 18 passes the bearing 16 that is located on the lower fixed seat 12 stretches out downwards, dirt-proof boot 17 is housed on operation mechanism's connecting rod 18, be provided with fixing 19 of operation mechanism in the underpart of operation mechanism's connecting rod 18, by this fixedly head-clamp hold or the operation mechanism of connection device, as the photoelectricity cutting head, electricity, oxygen welding is first-class, drives operation mechanism's connecting rod 18 by spindle gear and moves up and down to carry out work.
In the practical application: when nut sleeve 7 descending moving to outside the transmission range, the front end of screw mandrel 5 falls in the guiding bullport 15 of nut sleeve 7, screw mandrel 5 idle running, and the following action edge of nut sleeve 7 is cut off, and is compressed in simultaneously on the elastic cushion block 9, and slide unit 6 is no longer descending; When screw mandrel 5 opposite spins, utilize the spring-back force of elastic cushion block 9 that nut sleeve 7 is pushed screw mandrel 5 and move up, and drive slide unit 6 and move up.When nut sleeve 7 up moving to outside the transmission range, nut sleeve 7 rests on the screw mandrel guide section 13 of screw mandrel 5 upper ends, though the screw mandrel 5 of this moment continues rotation, the power of nut sleeve 7 is cut off, makes slide unit 6 no longer up; When screw mandrel 5 opposite spins, nut sleeve 7 imports screw mandrel 5 by the gravity of self, and slide unit 6 enters downstream state.
The Adjustable bracing bar 10 that slide unit 6 lower ends arrange, can adjust the descending moving range of slide unit 6 as required, when slide unit 6 came downwards to desired location, Adjustable bracing bar 10 was supported on the weight of slide unit 6 on the lower fixed seat 12 of carriage saddle 3, and making can be by excessive compression between slide unit 6 and the elastic cushion block 9.
Claims (4)
1. rectilinear spindle gear antioverloading protection mechanism; comprise motor; speed reducer; carriage saddle; slide unit; screw mandrel and directive slide track; motor and speed reducer are located at the upper end of carriage saddle; two directive slide tracks by carriage saddle up and down the fixed base at two ends be located at carriage saddle above; the upper end of screw mandrel links to each other with the output shaft of speed reducer; the lower end of screw mandrel connects slide unit; the bearing hole at slide unit two ends cooperates with the directive slide track that is located at its left and right sides respectively; slide unit moves up and down at the drive lower edge of screw mandrel directive slide track; it is characterized in that being provided with the nut sleeve (7) that a lower end has step in the attachment hole of described screw mandrel (5) and slide unit (6); the internal thread of nut sleeve (7) is connected with the screw thread of screw mandrel (5); the fitting surface of the attachment hole of the cylindrical of described nut sleeve (7) and slide unit (6) is for being slidingly matched; the lower end step of described nut sleeve (7) is connected mutually with the nut sleeve fixed base (8) that is located at its below, and the two ends of described nut sleeve (7) endoporus are provided with guiding bullport (15).
2. rectilinear spindle gear antioverloading protection mechanism according to claim 1 is characterized in that the upper end of described screw mandrel (5) is provided with screw mandrel guide section (13).
3. rectilinear spindle gear antioverloading protection mechanism according to claim 1 and 2 is characterized in that the lower end of described slide unit (6) is provided with Adjustable bracing bar (10).
4. rectilinear spindle gear antioverloading protection mechanism according to claim 1; the lower fixed seat (12) that it is characterized in that described carriage saddle (3) is provided with elastic cushion block (9), and elastic cushion block (9) is relative with the lower end surface of nut sleeve fixed base (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320108081 CN203130953U (en) | 2013-03-11 | 2013-03-11 | Anti-overloading protection mechanism for vertical screw driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320108081 CN203130953U (en) | 2013-03-11 | 2013-03-11 | Anti-overloading protection mechanism for vertical screw driving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203130953U true CN203130953U (en) | 2013-08-14 |
Family
ID=48938933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320108081 Expired - Fee Related CN203130953U (en) | 2013-03-11 | 2013-03-11 | Anti-overloading protection mechanism for vertical screw driving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203130953U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578150A (en) * | 2018-12-29 | 2019-04-05 | 中国船舶重工集团公司第七0三研究所 | A kind of UGT6001 gas turbine inlet adjustable guide vane driving mechanism |
| CN110319167A (en) * | 2018-03-31 | 2019-10-11 | 广东欧珀移动通信有限公司 | The control method of driving assembly, electronic device and electronic device |
-
2013
- 2013-03-11 CN CN 201320108081 patent/CN203130953U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110319167A (en) * | 2018-03-31 | 2019-10-11 | 广东欧珀移动通信有限公司 | The control method of driving assembly, electronic device and electronic device |
| CN109578150A (en) * | 2018-12-29 | 2019-04-05 | 中国船舶重工集团公司第七0三研究所 | A kind of UGT6001 gas turbine inlet adjustable guide vane driving mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20160311 |