CN2467572Y - Overload protector for screw headstock gear - Google Patents
Overload protector for screw headstock gear Download PDFInfo
- Publication number
- CN2467572Y CN2467572Y CN 01207451 CN01207451U CN2467572Y CN 2467572 Y CN2467572 Y CN 2467572Y CN 01207451 CN01207451 CN 01207451 CN 01207451 U CN01207451 U CN 01207451U CN 2467572 Y CN2467572 Y CN 2467572Y
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- CN
- China
- Prior art keywords
- collision block
- transmission arm
- frame
- worm
- plane
- 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 overload protector for a screw headstock gear, comprising a fixed machine frame parallel with a worm screw, a clamping groove arranged on the worm screw and a top bumper arranged in the clamping groove. A transversal transmission arm is fixedly connected with the top bumper and connected to the machine frame through a longitudinal transmission shaft; the terminal of the longitudinal transmission shaft is provided with a bottom bumper; both sides of the terminal of the bottom bumper are provided with microswitches. The utility model uses acting force of the worm screw to control the closing of the microswitches through the position relationship of the bottom bumper and the microswitches so as to realize that the switches are triggered to automatically cut off a power supply when the screw headstock gear is overloaded; mechanical failure caused by overload is avoided, and economic loss is reduced.
Description
The utility model relates to a kind of overload protection arrangement, particularly a kind of worm-type open-close machine overload protection arrangement.
At present, the worm-type open-close machine that is used for sluice, ship lock is when the overload phenomenon occurring, and motor still can work on, and causes the mechanical breakdown that causes because of overload, and economic loss is bigger.
The purpose of this utility model is: a kind of worm-type open-close machine overload protection arrangement is provided, when worm-type open-close machine when the overload phenomenon occurring, can cut off the power supply automatically by trigger switch, avoid the mechanical breakdown that causes because of overload, reduce economic loss.
The utility model is achieved in that a kind of worm-type open-close machine overload protection arrangement, comprises the fixed frame parallel with scroll bar, offers draw-in groove on the scroll bar, is provided with the top collision block in the described draw-in groove; Laterally transmission arm is fixedlyed connected with the top collision block with scroll bar is vertical; Laterally transmission arm is connected on the frame by longitudinal drive shaft; Longitudinal drive shaft is vertical with horizontal transmission arm and pass frame, be provided with horizontal transmission arm at its end and be positioned at same plane and the bottom collision block parallel with horizontal transmission arm with longitudinal drive shaft, the terminal both sides of collision block, bottom are provided with two and are fixed on microswitch on the frame by carriage, the bottom collision block with the corresponding position of microswitch be a spacing plane, both sides, spacing plane are connected with the transition inclined-plane, and the transition inclined-plane is corresponding with the contact position, end of microswitch and be separated with certain distance.
Described longitudinal drive shaft comprises connecting axle that is fixed on the horizontal transmission arm and the pipe spreader that passes frame that is fixedly connected with frame.
Described horizontal transmission arm is connected by axle with the top collision block.
Also be provided with fixedly cushion block between described bottom collision block and the frame.
The utility model is owing to the power that adopts transmission device will act on the scroll bar is delivered on the collision block of bottom, when headstock gear transships, scroll bar is subjected to active force and closes by the position relation control microswitch of bottom collision block and microswitch, thereby closing of control power supply, realized when the overload phenomenon appears in worm-type open-close machine, can cut off the power supply automatically by trigger switch, avoid the mechanical breakdown that causes because of overload, reduce economic loss.Both sides, the spacing plane of collision block, bottom are connected with the transition inclined-plane, can overcome the microswitch contact distortion that causes because of moment of torsion is excessive in electric motor starting moment, improve service precision of the present utility model.
Below in conjunction with accompanying drawing the utility model is described further.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the A-A sectional view of Fig. 1.
As shown in Figure 1,11 is the lifting screw of worm-type open-close machine, and 12 is turbine, and 13 is the butterfly spring of turbine end, and fixed frame 4 is parallel with scroll bar 15, offers draw-in groove 1 on the scroll bar.Be provided with top collision block 2 in the draw-in groove 1.Laterally transmission arm 3 and scroll bar are vertical is connected with top collision block 2 by spools 10; Laterally transmission arm 3 is connected on the frame 4 by longitudinal drive shaft 9; Longitudinal drive shaft 9 is vertical with horizontal transmission arm and pass frame, and 5 is pipe spreader among the figure, the hole of 18 expression axle sleeves, and power transmission shaft 9 rotates in hole 18.Be provided with horizontal transmission arm at the longitudinal drive shaft end and be positioned at same plane and the bottom collision block 8 parallel with horizontal transmission arm with longitudinal drive shaft, the terminal both sides of collision block, bottom are provided with two and are fixed on microswitch on the frame by carriage 14 and 14 ', 6 and 6 ' the end contact that has shown two microswitches among the figure.7 and 7 ' is transition inclined-plane on the collision block of bottom among the figure.
As can be seen from Figure 2, the bottom collision block 8 with the corresponding position of microswitch be a spacing plane 16,16 both sides, spacing plane are connected with transition inclined-plane 7, and transition inclined-plane 7 is corresponding with end contact 6 positions of microswitch on being connected carriage 14 and be separated with certain distance.Longitudinal drive shaft comprises connecting axle that is fixed on the horizontal transmission arm and the pipe spreader that passes frame 5 that is fixedly connected with frame.Also be provided with fixedly cushion block 17 between bottom collision block 8 and the frame 4.
When the actual use of the utility model, because the pressure that acts on the scroll bar 15 is excessive, when the overload phenomenon promptly occurring, the axial displacement aggravation of scroll bar, be that axial force strengthens on the scroll bar, by horizontal transmission arm and longitudinal drive shaft with this force transmission to the collision block of bottom, the bottom collision block takes place and the equidirectional displacement of scroll bar, the end contact of microswitch is hit pressure by the bottom collision block, thereby closing of control power supply, realized when the overload phenomenon appears in worm-type open-close machine, can cutting off the power supply automatically by trigger switch.In collision block both sides, bottom microswitch being set respectively can be limited the displacement of scroll bar both direction respectively.Both sides, the spacing plane of collision block, bottom are connected with the transition inclined-plane, can overcome the microswitch contact distortion that causes because of moment of torsion is excessive in electric motor starting moment, improve service precision of the present utility model.
Claims (4)
1. a worm-type open-close machine overload protection arrangement comprises the fixed frame parallel with scroll bar, offers draw-in groove on the scroll bar, it is characterized in that: be provided with the top collision block in the described draw-in groove; Laterally transmission arm is vertical with scroll bar flexibly connects with the top collision block; Laterally transmission arm is connected on the frame by longitudinal drive shaft; Longitudinal drive shaft is vertical with horizontal transmission arm and pass frame, be provided with horizontal transmission arm at its end and be positioned at same plane and the bottom collision block parallel with horizontal transmission arm with longitudinal drive shaft, the terminal both sides of collision block, bottom are provided with two and are fixed on microswitch on the frame by carriage, the bottom collision block with the corresponding position of microswitch be a spacing plane, both sides, spacing plane are connected with the transition inclined-plane, and the transition inclined-plane is corresponding with the contact position, end of microswitch and be separated with certain distance.
2. worm-type open-close machine overload protection arrangement according to claim 1 is characterized in that: described longitudinal drive shaft comprises connecting axle that is fixed on the horizontal transmission arm and the pipe spreader that passes frame that is fixedly connected with frame.
3. worm-type open-close machine overload protection arrangement according to claim 1 is characterized in that: described horizontal transmission arm is connected by axle with the top collision block.
4. worm-type open-close machine overload protection arrangement according to claim 1 is characterized in that: also be provided with fixedly cushion block between described bottom collision block and the frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01207451 CN2467572Y (en) | 2001-03-07 | 2001-03-07 | Overload protector for screw headstock gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01207451 CN2467572Y (en) | 2001-03-07 | 2001-03-07 | Overload protector for screw headstock gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2467572Y true CN2467572Y (en) | 2001-12-26 |
Family
ID=33627842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01207451 Expired - Fee Related CN2467572Y (en) | 2001-03-07 | 2001-03-07 | Overload protector for screw headstock gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2467572Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1300414C (en) * | 2005-03-30 | 2007-02-14 | 中国水利水电科学研究院 | Mechanical clutch protector of automatic control gate |
| CN104074173A (en) * | 2014-07-02 | 2014-10-01 | 江苏武东机械有限公司 | Protection device for spiral bevel gear screw-type open-close machine |
-
2001
- 2001-03-07 CN CN 01207451 patent/CN2467572Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1300414C (en) * | 2005-03-30 | 2007-02-14 | 中国水利水电科学研究院 | Mechanical clutch protector of automatic control gate |
| CN104074173A (en) * | 2014-07-02 | 2014-10-01 | 江苏武东机械有限公司 | Protection device for spiral bevel gear screw-type open-close machine |
| CN104074173B (en) * | 2014-07-02 | 2015-09-23 | 江苏武东机械有限公司 | A kind of protective device of spiral bevel gear worm-type open-close machine |
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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: 20011226 |