CN204265254U - Stroke protector on a kind of hoisting crane - Google Patents
Stroke protector on a kind of hoisting crane Download PDFInfo
- Publication number
- CN204265254U CN204265254U CN201420386607.3U CN201420386607U CN204265254U CN 204265254 U CN204265254 U CN 204265254U CN 201420386607 U CN201420386607 U CN 201420386607U CN 204265254 U CN204265254 U CN 204265254U
- Authority
- CN
- China
- Prior art keywords
- push rod
- hoisting crane
- housing
- backing pin
- backplate
- 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
Links
Landscapes
- Push-Button Switches (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
The utility model discloses the stroke protector on a kind of hoisting crane, push rod inside is equipped with spring and is assemblied in housing, backing pin is equipped with at described push rod two ends, two sides have been bolted backplate to described housing, backplate has the supported hole exposed for push rod one end, the other end of push rod is fixed by the backplate on another side of housing, the lower axis direction of push rod has an elongated hole, one end of backing pin is assemblied in the elongated hole of push rod, the other end of backing pin exposes, this end surface exposing backing pin is provided with groove, micro-switch is contained in the end that the bottom being fixed on housing in groove is positioned at push rod, power lead is connected with the operation electrical equipment on hoisting crane.The technical program can cut off hoisting crane large and small garage journey terminal supplying power accurately; not by the requirement of hoisting crane large and small car stroke limit size, have easy for installation, Anti-bumping protection precision is high; compact conformation, effectively improves the spacing safe reliability of elevator machinery up stroke.
Description
Technical field:
The utility model relates to the stroke protector on a kind of hoisting crane, is specially adapted to the spacing upper use of operation terminal of direct impact during Transport Machinery stroke.
Background technology:
At present; the range limiter that hoisting crane uses; mostly there is stroke protecting device precision low; install loaded down with trivial details, if once spacing malfunctioning, can potential safety hazard be caused; hoisting crane is made to can not get actv. protection; add productive costs and installation difficulty simultaneously, add the work capacity of aloft work to installer, thus increase the cost producing product.
Summary of the invention:
Task of the present utility model proposes one to save production cost, and simplifies installation process, the stroke protector on a kind of hoisting crane that Anti-bumping protection precision is high.
Task of the present utility model completes like this, stroke protector on a kind of hoisting crane, it is characterized in that: push rod inside is equipped with spring and is assemblied in housing, backing pin is equipped with at described push rod two ends, two sides have been bolted backplate to described housing, backplate has the supported hole exposed for push rod one end, the other end of push rod is fixed by the backplate on another side of housing, the lower axis direction of push rod has an elongated hole, one end of backing pin is assemblied in the elongated hole of push rod, the other end of backing pin exposes, this end surface exposing backing pin is provided with groove, micro-switch is contained in the end that the bottom being fixed on housing in groove is positioned at push rod, power lead is connected with the operation electrical equipment on hoisting crane.Described backplate also has waterproof joint, and the shape of described groove is V-shaped, and described micro-switch top has the contact of V-type projection, micro-switch to be in groove in off-state.
The utility model has following effect: the technical program can cut off hoisting crane large and small garage journey terminal supplying power accurately; not by the requirement of hoisting crane large and small car stroke limit size; have easy for installation; Anti-bumping protection precision is high; compact conformation, effectively improves the spacing safe reliability of elevator machinery up stroke.
Accompanying drawing illustrates:
Fig. 1 is structural representation of the present utility model; Fig. 2 is the left view of Fig. 1; Fig. 3 is the right elevation of Fig. 1; Fig. 4 is the structural representation of the utility model detailed description of the invention; Fig. 5 is backing pin mounting structure schematic diagram.
Drawing illustrates: 1, push rod, 2, spring, 3, backing pin, 4, micro-switch, 5, housing, 6, supported hole, 7, waterproof joint, 8, power lead, 9, backing pin, 10, screw, 11, contact, 12, backplate.
Detailed description of the invention:
Embodiment is described in detail in conjunction with above accompanying drawing, as shown in Figure 4, push rod 1 inside is equipped with spring 2 and is assemblied in housing 5 li, backing pin 9 is equipped with at described push rod two ends, two sides have been bolted backplate 12(as shown in Figures 2 and 3 to described housing), backplate 12 has the supported hole 6 exposed for push rod one end, the other end of push rod is fixed by the backplate on another side of housing, described backplate also has waterproof joint 7, the lower axis direction of push rod 1 has an elongated hole, one end of backing pin 3 is assemblied in the elongated hole of push rod, the other end of backing pin exposes, this end surface exposing backing pin is provided with groove, the shape of groove is V-shaped, micro-switch 4 is contained in the end that the bottom being fixed on housing in groove is positioned at push rod, the contact 11 of V-type projection is arranged at described micro-switch top, micro-switch is in groove in off-state, spring in push rod 1 also in the raw, when there being external force, move backward in push rod end, spring 2 is in compressive state under the stop of backing pin 3, because push rod moves backward, the contact of the V-type projection be on the micro-switch in groove is skidded off in the groove of push rod, be closure state with ejector pin contact, when external force disappears, under the action of the spring, push rod restores to the original state, contact 11 now on micro-switch 4 again backhaul in the groove of push rod end, circuit disconnects, power lead 8 is connected with the operation electrical equipment on hoisting crane, cut off the electricity supply and play stroke protective effect, this stroke protector is contained in crane to run on end carriage, track terminal car bumper is answered back to by push rod 1, effectively control crane, the operation of dolly end position.
Claims (2)
1. the stroke protector on a hoisting crane, it is characterized in that: push rod inside is equipped with spring and is assemblied in housing, backing pin is equipped with at described push rod two ends, two sides have been bolted backplate to described housing, backplate has the supported hole exposed for push rod one end, the other end of push rod is fixed by the backplate on another side of housing, the lower axis direction of push rod has an elongated hole, one end of backing pin is assemblied in the elongated hole of push rod, the other end of backing pin exposes, this end surface exposing backing pin is provided with groove, micro-switch is contained in the end that the bottom being fixed on housing in groove is positioned at push rod, power lead is connected with the operation electrical equipment on hoisting crane.
2. the stroke protector on a kind of hoisting crane according to claim 1; it is characterized in that: described backplate also has waterproof joint; the shape of described groove is V-shaped, and described micro-switch top has the contact of V-type projection, micro-switch to be in groove in off-state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420386607.3U CN204265254U (en) | 2014-07-14 | 2014-07-14 | Stroke protector on a kind of hoisting crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420386607.3U CN204265254U (en) | 2014-07-14 | 2014-07-14 | Stroke protector on a kind of hoisting crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204265254U true CN204265254U (en) | 2015-04-15 |
Family
ID=52800133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420386607.3U Expired - Fee Related CN204265254U (en) | 2014-07-14 | 2014-07-14 | Stroke protector on a kind of hoisting crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204265254U (en) |
-
2014
- 2014-07-14 CN CN201420386607.3U patent/CN204265254U/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 | ||
| 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: 20150415 Termination date: 20160714 |