CN214989936U - Input shaft of chain block for axial movement and positioning of brake seat - Google Patents
Input shaft of chain block for axial movement and positioning of brake seat Download PDFInfo
- Publication number
- CN214989936U CN214989936U CN202120769399.5U CN202120769399U CN214989936U CN 214989936 U CN214989936 U CN 214989936U CN 202120769399 U CN202120769399 U CN 202120769399U CN 214989936 U CN214989936 U CN 214989936U
- Authority
- CN
- China
- Prior art keywords
- shaft
- brake seat
- shaft section
- positioning groove
- shaft part
- 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.)
- Active
Links
Images
Landscapes
- Braking Arrangements (AREA)
Abstract
The utility model discloses an input shaft of a chain block for axial movement and positioning of a brake seat, which comprises a main shaft section, a stepped shaft section and a shaft shoulder positioned between the main shaft section and the stepped shaft section, wherein the stepped shaft section comprises a shaft part for circumferential fixing and a smooth shaft part, the smooth shaft part is provided with an inner positioning groove and an outer positioning groove for selective elastic positioning of the brake seat at intervals, the inner positioning groove is adjacent to the shaft part for circumferential fixing, and the shaft part for circumferential fixing is positioned between the shaft shoulder and the inner positioning groove; the brake seat moving outwards or inwards along the axis of the stepped shaft section can correspondingly position the corresponding outer positioning groove and the corresponding inner positioning groove, and the brake seat is correspondingly in clearance fit with the smooth shaft part or is circumferentially fixed with the shaft part for circumferential fixation. After the scheme is adopted, the stepped shaft section forms double-station selective positioning, when the brake seat is matched with the hollow sleeve of the smooth shaft part, the friction transmission fails, and the hoisting station can be quickly adjusted in an idle state; when the brake and the shaft part for circumferential fixation are circumferentially fixed, the friction transmission can be recovered, and the hoisting load can be recovered.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to an input shaft of a chain block for axial movement and positioning of a brake seat, which belongs to the technical field of input shafts of chain blocks.
[ background of the invention ]
In the existing chain block, the whole long shaft is in a smooth shaft structure form, and the structural arrangement is usually as follows: the middle shaft section is used as a smooth main shaft section which is matched with the hoisting chain wheel in an empty sleeve mode, the shaft section which penetrates out of the hoisting chain wheel and is positioned outside the driving side wall belongs to a smooth stepped shaft section, and the shaft section which penetrates out of the hoisting chain wheel and extends into the reduction gear box is a gear shaft section.
After carefully analyzing the above overall structure, it was found that: the prior input shaft has the following technical defects:
the input shaft is basically fixed relative to the brake on the stepped shaft section, namely the stepped shaft section lacks a structure for multifunctional movable positioning of the brake seat. On one hand, the brake seat and the input shaft cannot meet the requirement that the brake seat and the input shaft form clearance fit after being positioned, namely, the brake cannot form a friction transmission failure relation with the long shaft, and correspondingly, the hoisting chain wheel cannot freely rotate without being limited by the rotating speed, namely, the requirement that the hoisting chain is quickly dragged to efficiently adjust the hoisting station of the lower hook assembly cannot be met; on the other hand, the stepped section shaft section cannot be provided for the brake seat to reselect a positioning position and then is circumferentially fixed, so that the brake cannot integrally rotate with the input shaft due to the fact that friction transmission cannot be recovered under the action of axial positive pressure external force borne by the brake, the integrally rotating power cannot be transmitted to the gear speed reducing mechanism, and the hoisting chain wheel cannot reliably and stably recover hoisting load under the control of the speed ratio of the speed reducing mechanism.
[ Utility model ] content
In view of the above-mentioned deficiencies in the prior art, the present invention provides an input shaft of a chain block for axial movement and positioning of a brake seat.
Therefore, the utility model adopts the following technical scheme:
the utility model provides a supply ring chain block's of brake seat axial displacement location usefulness input shaft, the input shaft is including supplying jack-up sprocket empty sleeve complex main shaft section and extending the outside step shaft section of drive side wall board, and step shaft section and main shaft section transition form the shaft shoulder, and step shaft section supplies the installation stopper, and the stopper includes the ratchet of taking the double friction disc of brake seat and empty sleeve on the brake seat, jack-up sprocket supports on drive side wall board and speed reduction side wall board with rotating, and its improvement point lies in: the stepped shaft section is divided into a circumferential fixing shaft part and a smooth shaft part, and an outer positioning groove and an inner positioning groove which can be used for selective elastic positioning of the brake seat are arranged on the smooth shaft part at intervals, wherein the inner positioning groove is adjacent to the circumferential fixing shaft part, and the circumferential fixing shaft part is positioned between the shaft shoulder and the inner positioning groove; when the brake seat moving outwards along the axial direction of the stepped shaft section is elastically positioned in the outer positioning groove, the brake seat is in clearance fit with the smooth shaft section, when the brake seat moving inwards along the axial direction of the stepped shaft section is elastically positioned in the inner positioning groove, the brake seat is circumferentially fixed with the shaft section for circumferential fixation, and an inner hole of the brake seat is axially positioned on the shaft shoulder.
In order to prevent the brake seat from sliding through the outer positioning groove due to the fact that an operator applies violent rough force to the brake seat instantly to cause the brake seat not to be positioned in time, the shaft end of the smooth shaft part is provided with a clamping groove, a shaft check ring is arranged in the clamping groove, and the brake seat can be prevented from being separated from the smooth shaft part due to the arrangement of the shaft check ring.
Preferably, the circumferential fixing shaft portion is provided with an external spline to which the brake seat is coupled.
Preferably, the circumferential fixing shaft portion is provided with a polygonal head to which the brake base is coupled.
The utility model discloses the fact has following advantage and positive effect:
the stepped shaft section of the input shaft is provided with a shaft part for circumferential fixation and a smooth shaft part, after the smooth shaft part is respectively additionally provided with an inner positioning groove and an outer positioning groove, the stepped shaft section has a brake seat for axial movement and is respectively and correspondingly positioned on the inner positioning groove and the outer positioning groove, and the stepped shaft section forms a double-station selective positioning function, namely, when the brake seat is positioned on the outer positioning groove, the brake seat is in clearance fit with the smooth shaft part, at the moment, because the friction transmission of the brake fails, the dragging speed of the hoisting chain can not be limited by the rotating speed of the hoisting chain wheel, and the requirement that the loop chain block quickly drags the hoisting chain in an idle state so as to efficiently adjust the hoisting station of the lower hoisting hook assembly is met; when the brake seat is positioned on the inner positioning groove, the brake seat and the shaft part for circumferential fixation form a circumferential fixation state, when the brake bears the action of axial positive pressure external force, the brake seat and the shaft part for circumferential fixation can integrally rotate with the input shaft due to the fact that friction transmission can be recovered, and at the moment, the hoisting chain wheel is controlled by the speed ratio of the speed reducing mechanism, so that hoisting load can be reliably and stably recovered.
[ description of the drawings ]
FIG. 1 is a schematic structural view of an input shaft of the chain block of the present invention;
FIG. 2 is a schematic view of the brake;
fig. 3 shows a state diagram of the brake elastically positioned in the outer positioning groove (no-load state, friction drive failure).
[ detailed description ] embodiments
The utility model provides a supply ring chain block's input shaft of brake seat axial displacement location usefulness, the input shaft is including supplying 4 empty complex main shaft sections 10 of jack-up sprocket and extending the outside stepped shaft section 11 of drive side wall board X, stepped shaft section 11 and the transition of main shaft section 10 form the shaft shoulder 1', stepped shaft section 11 supplies the installation stopper, the stopper includes brake seat 2 and the empty ratchet of taking the double friction disc of sleeving on brake seat 2, jack-up sprocket 4 supports on drive side wall board X and speed reduction side wall board with rotating, its improvement point lies in: the stepped shaft section 11 is divided into a circumferential fixing shaft part 111 and a smooth shaft part 112, and the smooth shaft part 112 is provided with an outer positioning groove 112R and an inner positioning groove 112L at intervals, which can be used for selective elastic positioning of the brake seat 2, wherein the inner positioning groove 112L is adjacent to the circumferential fixing shaft part 111, and the circumferential fixing shaft part 111 is positioned between a shaft shoulder 1' and the inner positioning groove 112L; when the brake seat 2 moving outward in the axial direction of the stepped shaft section 11 is elastically positioned in the outer positioning groove 112R, the brake seat 2 is in clearance fit with the smooth shaft section 112, and when the brake seat 2 moving inward in the axial direction of the stepped shaft section 11 is elastically positioned in the inner positioning groove 112L, the brake seat 2 is circumferentially fixed to the circumferential fixing shaft section 111, and the inner hole of the brake seat 2 is axially positioned in the shoulder 1'.
When the elastic positioning is implemented, an elastic positioning component is arranged in a radial screw hole 200 formed in the boss part 20, the elastic positioning component consists of a positioning pin 31, a pressure spring 32 and a headless slotted screw 33 which is screwed in the radial screw hole 200 in sequence, the positioning pin 31, the pressure spring 32 and the headless slotted screw 33 are sequentially arranged in the radial screw hole 200, the inner end of the pressure spring 32 is abutted against the pin shoulder of the positioning pin 31, and the outer end of the pressure spring is abutted against the headless slotted screw 33.
The ratchet with double friction plates is specifically an inner friction plate 20a, a ratchet 20b and an outer friction plate 20c, which are sequentially sleeved on the boss part 20 of the brake seat 2 in an empty manner, the inner friction plate, the ratchet and the outer friction plate can be of a split structure, and the inner friction plate and the outer friction plate can be respectively sintered on the inner side surface and the outer side surface of the ratchet.
The smooth shaft portion 112 is provided at its shaft end with a snap groove 112-1 in which a retainer ring C for a shaft is fitted.
In a specific embodiment, the circumferential fixing shaft 111 is provided with an external spline for coupling the brake holder 2, and in this case, an inner hole wall of the brake holder 2 is provided with an adaptive internal spline.
As another specific implementation structure, the circumferential fixing shaft 111 is provided with a polygonal head for coupling the brake seat 2, and in this case, the inner hole wall of the brake seat 2 is provided with a polygonal hole (not shown).
The multi-angle head can be processed into a hexagonal head or an octagonal head; the decelerating side wall panels are of known construction and are not shown.
Claims (4)
1. The utility model provides a supply ring chain block's of brake seat axial displacement location usefulness input shaft, the input shaft is including supplying jack-up sprocket empty sleeve complex main shaft section and extending the outside step shaft section of drive side wall board, and step shaft section and main shaft section transition form the shaft shoulder, and step shaft section supplies the installation stopper, and the stopper includes the ratchet of taking the double friction disc of brake seat and empty sleeve on the brake seat, jack-up sprocket supports on drive side wall board and speed reduction side wall board with rotating, its characterized in that: the stepped shaft section is divided into a circumferential fixing shaft part and a smooth shaft part, and an outer positioning groove and an inner positioning groove which can be used for selective elastic positioning of the brake seat are arranged on the smooth shaft part at intervals, wherein the inner positioning groove is adjacent to the circumferential fixing shaft part, and the circumferential fixing shaft part is positioned between the shaft shoulder and the inner positioning groove;
when the brake seat moving outwards along the axial direction of the stepped shaft section is elastically positioned in the outer positioning groove, the brake seat is in clearance fit with the smooth shaft section, when the brake seat moving inwards along the axial direction of the stepped shaft section is elastically positioned in the inner positioning groove, the brake seat is circumferentially fixed with the shaft section for circumferential fixation, and an inner hole of the brake seat is axially positioned on the shaft shoulder.
2. The input shaft of the chain block for axially moving and positioning the brake seat as claimed in claim 1, wherein: the smooth shaft part is provided with a clamping groove at the shaft end, and a retaining ring for the shaft is arranged in the clamping groove.
3. The input shaft of the chain block for axially moving and positioning the brake seat as claimed in claim 1 or 2, wherein: and the shaft part for circumferential fixation is provided with an external spline for connecting the brake seat.
4. The input shaft of the chain block for axially moving and positioning the brake seat as claimed in claim 1 or 2, wherein: the shaft part for circumferential fixation is provided with a multi-angle head for connecting the brake seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120769399.5U CN214989936U (en) | 2021-04-14 | 2021-04-14 | Input shaft of chain block for axial movement and positioning of brake seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120769399.5U CN214989936U (en) | 2021-04-14 | 2021-04-14 | Input shaft of chain block for axial movement and positioning of brake seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214989936U true CN214989936U (en) | 2021-12-03 |
Family
ID=79136959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120769399.5U Active CN214989936U (en) | 2021-04-14 | 2021-04-14 | Input shaft of chain block for axial movement and positioning of brake seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214989936U (en) |
-
2021
- 2021-04-14 CN CN202120769399.5U patent/CN214989936U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102059408B (en) | Main shaft device for numerical controlled gear hobbing machine | |
| CN203362896U (en) | Energy-saving overrun clutch | |
| CN207315899U (en) | Clutch control mechanism and its internal speed changer of application | |
| CN103438190B (en) | Many cam self-adaptings multidrive countershaft | |
| CN214989936U (en) | Input shaft of chain block for axial movement and positioning of brake seat | |
| CN109081258B (en) | Heavy-duty type multistage spiral lifting device | |
| CN110939698B (en) | Full-mechanical self-adaptive automatic speed change system with reverse gear | |
| CN215048291U (en) | Brake capable of being elastically positioned on input shaft and used for chain block | |
| CN105299217A (en) | Pendulum type self-adaption automatic variable speed drive assembly of electric motorcycle inner rotor motor bow cone | |
| CN216618342U (en) | Manual-automatic integrated hydraulic wheel cylinder for adjusting brake clearance | |
| CN2407175Y (en) | Pin shaft type clutch | |
| CN202203294U (en) | Quick-change type ball-cage universal coupling | |
| CN213121112U (en) | Device for simulating rolling bearing slipping | |
| CN111017106B (en) | Compact type large-load central driving type self-adaptive electric driving assembly | |
| CN111075854B (en) | Central-drive adaptive electric drive assembly with multi-plate friction clutch | |
| CN213510500U (en) | Drill rod clamping structure applied to through hole type power head | |
| CN205244320U (en) | Reducing gear box locking device | |
| CN207522507U (en) | A kind of ZJ17 rolling up and connecting machine spider oil seal circle dismantling device | |
| CN111204407A (en) | Fixed shaft type large-load self-adaptive electric drive assembly adopting central drive form | |
| CN219139649U (en) | Automobile slider | |
| CN214146321U (en) | Tooth-shaped expansion sleeve mechanism | |
| CN201187535Y (en) | Engaging type clutch | |
| CN202833635U (en) | Novel bearing | |
| CN218434290U (en) | Slip ring | |
| CN203702918U (en) | Multifunctional wet lubricating electromagnetic clutch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |