CN201875077U - Lifting nut - Google Patents
Lifting nut Download PDFInfo
- Publication number
- CN201875077U CN201875077U CN2010206183164U CN201020618316U CN201875077U CN 201875077 U CN201875077 U CN 201875077U CN 2010206183164 U CN2010206183164 U CN 2010206183164U CN 201020618316 U CN201020618316 U CN 201020618316U CN 201875077 U CN201875077 U CN 201875077U
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- CN
- China
- Prior art keywords
- nut
- safety
- driving
- fork
- lifting
- 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 discloses a lifting nut pair which comprises a driving set and a driven set, wherein the driving set comprises a driving nut, a driving bracket and a safety upper shifting fork, wherein the driving nut is installed on the driving bracket through a bolt, and the safety upper shifting fork is connected with the driving nut through the bolt; a driven set comprises a safety lower shifting fork, a safety nut, and a proximity switch with a normally-open contact, wherein the proximity switch with the normally-open contact is installed on the driving bracket, and the proximity switch with the normally-open contact is connected with a PLC (programmable logic controller) control cabinet; and the safety nut and the driving nut are indirectly connected through the safety upper shifting fork and the safety lower shifting fork. When the lifting nut pair is used, the gap is produced by means of the abrasion between the screw rod and the nuts; and a proximity switch is adopted as a detection element to detect a preset gap, inform a control system to give an alarm, and remind of an operator that maintenance and replacement are required; therefore, great convenience for the operation is realized; meanwhile, sudden failures of equipment are avoided; and the safety coefficient is improved.
Description
Technical field
The utility model relates to a kind of lifting nut, is specifically related to a kind of lifting nut of belt wear detection device.
Background technique
Lifting drive system mainly is made up of trapezoidal screw, lifting nut, drive unit, counterweight etc.The slide lifting drives power and is driven through worm reducer by AC motor, by screw-nut body with transmission of power to slide and upset dish, by the linear rail guiding, realize the elevating movement of slide and upset dish.Screw mandrel adopts trapezoidal screw, and feed screw nut and worm reducer all have auto-lock function, and slide can accurately be located the arbitrary position in range.
Lifting nut mainly is made up of nut frame, drive nut and jam nut.When drive nut is long-term use in during wear and tear overrun, jam nut contacts with threads of lead screw, thereby prevents that slide from dropping.Because jam nut and leading screw friction locking must could run well behind the replacing drive nut, thereby the security incident that causes because of the nut wearing and tearing in preventing to use for a long time.
Although being provided with the jam nut device prevents from security incident to occur because of nut has worn and torn.But because jam nut and leading screw friction locking must could run well behind the replacing drive nut.Change nut after each replacing jam nut and the leading screw friction locking and comparatively bother, do not have the lifting nut of special band detection device so far.
The model utility content
The utility model has overcome the deficiencies in the prior art, and a kind of easy-to-operat is provided, and the lifting nut of avoiding equipment to break down suddenly simultaneously because this nut has detection device, can be reported to the police automatically, has solved the technical problem that the nut wearing and tearing can't detect.
For solving above-mentioned technical problem, the utility model by the following technical solutions:
A kind of lifting nut, this nut comprise active set and driven group, and active set comprises fork on drive nut, driving arm, the safety, and wherein drive nut is installed on the driving arm by bolt, and safety goes up fork and also is connected with drive nut by bolt; Driven group comprise safety down fork, jam nut and have normally opened contact near switch, wherein fork is connected with jam nut by bolt under the safety, have being installed on the driving arm of normally opened contact near switch, have being connected with the PLC control cabinet near switch of normally opened contact, the PLC control cabinet comprises CPU, storage, input, output interface; Drive nut is connected by the upper and lower fork of safety indirectly with jam nut; Active set and driven group are installed on the elevating screw, and safety leaves the gap between fork and the jam nut down, rotate by elevating screw and make the drive nut lifting, drive nut by driving arm with transmission of power.
Described gap is 1/4th of a pitch.
Have being installed on the spring near switch of normally opened contact, be connected with driving arm by spring, the working stroke of spring is less than the gap.
Compared with prior art, the beneficial effects of the utility model are: a kind of lifting nut is provided, this device utilizes the wearing and tearing between leading screw and the nut to produce the gap, adopt simultaneously near switch as Detecting element, detect the gap of presetting, notice PLC control cabinet is reported to the police, remind the operator to keep in repair and to change, greatly facilitate operation, also avoided equipment to break down suddenly simultaneously, improved safety coefficient.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
Below in conjunction with accompanying drawing the utility model is further elaborated.
As shown in Figure 1, a kind of lifting nut, this nut comprise active set and driven group, and active set comprises fork 3 on drive nut 1, driving arm 2, the safety, wherein drive nut 1 is installed on the driving arm 2 by bolt, also is connected with drive nut 1 by bolt and go up fork 3 safely; Driven group comprise safety down fork 4, jam nut 5 and have normally opened contact near switch 6, wherein fork 4 is connected with jam nut 5 by bolt under the safety, have being installed on the spring 8 of normally opened contact near switch 6, be connected with driving arm 2 by spring 8, the working stroke of spring 8 is less than gap 7 again.Have being connected with the PLC control cabinet near switch 6 of normally opened contact simultaneously, the PLC control cabinet comprises CPU, storage, input, output interface etc.Jam nut 5 is connected by the upper and lower fork 3,4 of safety indirectly with drive nut 1; Active set and driven group are installed on the elevating screw, and safety leaves the gap between fork 4 and the jam nut 5 down, and gap 7 is roughly 1/4th of pitch.Make drive nut 1 lifting by the elevating screw rotation, drive nut 1 passes through driving arm 2 with transmission of power, thereby realizes the equipment load lifting function; Simultaneously, jam nut 5 is elevating movement together also, still, owing to connect by fork between jam nut 5 and the drive nut 1, so 5 of jam nuts are done uncharged elevating movement.In use, drive nut 1 is under loading, and the thread form of screw thread can be worn, and this moment, driven group relative position was constant, and active set will descend for driven relatively group, and the amount of decline is the amount that is worn.When the amount that descends exceeds setting value, have throwing off of normally opened contact near switch 6, the PLC control cabinet is made warning, and prompting must be changed nut and can normally use.
Claims (3)
1. lifting nut, it is characterized in that: this nut comprises active set and driven group, active set comprises fork (3) on drive nut (1), driving arm (2), the safety, wherein drive nut (1) is installed on the driving arm (2) by bolt, also is connected with drive nut (1) by bolt and go up fork (3) safely; Driven group comprise safety down fork (4), jam nut (5) and have normally opened contact near switch (6), wherein fork (4) is connected with jam nut (5) by bolt under the safety, have being installed on the driving arm (2) of normally opened contact near switch (6), have being connected with the PLC control cabinet near switch (6) of normally opened contact, the PLC control cabinet comprises CPU, storage, input, output interface; Drive nut (1) is connected by the upper and lower fork of safety (3,4) indirectly with jam nut (5); Active set and driven group are installed on the elevating screw, and safety leaves gap (7) between fork (4) and the jam nut (5) down, rotate by elevating screw and make drive nut (1) lifting, and drive nut (1) passes through driving arm (2) with transmission of power.
2. lifting nut according to claim 1 is characterized in that: described gap (7) are 1/4th of pitch.
3. lifting nut according to claim 1 is characterized in that: have being installed on the spring (8) near switch (6) of normally opened contact, be connected with driving arm (2) by spring (8), the working stroke of spring (8) is less than gap (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206183164U CN201875077U (en) | 2010-11-22 | 2010-11-22 | Lifting nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206183164U CN201875077U (en) | 2010-11-22 | 2010-11-22 | Lifting nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201875077U true CN201875077U (en) | 2011-06-22 |
Family
ID=44162995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206183164U Expired - Fee Related CN201875077U (en) | 2010-11-22 | 2010-11-22 | Lifting nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201875077U (en) |
-
2010
- 2010-11-22 CN CN2010206183164U patent/CN201875077U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Chengdu GREAT Industrial CO., Ltd. Assignor: Chengdu Hanyan Weida Technology Co., Ltd. Contract record no.: 2013510000125 Denomination of utility model: Lifting nut pair with wear detector Granted publication date: 20110622 License type: Exclusive License Record date: 20131225 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110622 Termination date: 20171122 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |