CN202465165U - Double-ratchet manual type winch - Google Patents
Double-ratchet manual type winch Download PDFInfo
- Publication number
- CN202465165U CN202465165U CN2012200935195U CN201220093519U CN202465165U CN 202465165 U CN202465165 U CN 202465165U CN 2012200935195 U CN2012200935195 U CN 2012200935195U CN 201220093519 U CN201220093519 U CN 201220093519U CN 202465165 U CN202465165 U CN 202465165U
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- ratchet
- nut
- knob
- gear wheel
- wheel shaft
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Abstract
The utility model discloses a double-ratchet manual type winch. The winch comprises a support, a ratchet housing, a capstan in the support, a gear shaft which is linked with the capstan and a handle, wherein a ratchet mechanism is arranged on the gear shaft in the ratchet housing; a locking mechanism of the ratchet mechanism is arranged on the side of the support; the ratchet mechanism comprises a first ratchet, a second ratchet and a nut; the first ratchet is fixedly sleeved on the gear shaft; the second ratchet is opposite to the first ratchet and sleeved on the gear shaft in a movable mode; the nut is in thread fit with the gear shaft; opposite friction plates are arranged between the second ratchet and the nut; the locking mechanism comprises a pawl shaft, a double-head pawl and a knob; the pawl shaft is arranged on the side of the support; the double-head pawl is arranged on the pawl shaft and matched with a ratchet group to stop return; and the knob is used for driving the double-head pawl to rotate. According to the double-ratchet manual type winch, a double-ratchet and double-head pawl structure is adopted by a brake system, so that the winch can be braked in the rope unwinding and winding states.
Description
Technical field
The utility model relates to winch, particularly a kind of manual type winch that has two ratchets, double end ratchet.
Background technology
The manual type winch of prior art comprises supporting system, driving system and brake system, wherein:
Described supporting system comprises support and ratchet case, and described driving system comprises capstan winch, gear wheel shaft and the handle in the support, and described brake system comprises the ratchet device on the gear wheel shaft.
Ratchet device on the winch is single ratchet, single head pawl structures in the prior art; Concrete structure is: the extension that extends through cradle at gear wheel shaft is arranged with ratchet, and the ratchet that matches with ratchet then correspondingly is sheathed on the pawl axis that is fixed in this cradle; This cradle also is fixed with the locating part that is used for ratchet is limited to control position, and locating part can keep the mated condition of ratchet and ratchet, prevents the rotation that ratchet is unnecessary and deviates from.
Owing to adopt the ratchet device of single ratchet, single head pawl structures to make the brake system of prior art have following problem: only the winch of putting the rope process to be braked; Do not play restriction capstan winch rotation direction to receiving the rope process; Can't avoid in receiving the rope process, dropping owing to putting the weight that causes of restricting suddenly; Thereby cause industrial accident, can't guarantee the safety of producing.
The utility model content
The utility model provides a kind of pair of ratchet manual type winch, not only can in winch is put the process of rope, brake, and can realize that also winch receives the brake in the rope process.
A kind of pair of ratchet manual type winch; Comprise capstan winch in the support, ratchet case, support, with the gear wheel shaft and the handle of capstan winch interlock; One end of gear wheel shaft passes cradle and ratchet case; Gear wheel shaft in the ratchet case is provided with ratchet device, and cradle is provided with the lockable mechanism of ratchet device; Described ratchet device comprises and axially setting gradually along gear wheel shaft:
Be fixedly set in first ratchet on the gear wheel shaft;
With described first hook tooth to opposing, and be sleeved on second ratchet on the gear wheel shaft versatilely, this second ratchet side of first ratchet dorsad has first friction lining;
With the nut of described gear wheel shaft screw thread fit, be fixed with on this nut and can rotate fit or away from second friction lining of said first friction lining, described taper knob is connected on this nut with the driven gear axle with nut;
Be fixed on the locations that is used for axially stopping said nut of gear shaft terminal head position;
Described lockable mechanism comprises:
Be located at the pawl axis of cradle;
Be arranged on the double end ratchet on the pawl axis, this double end ratchet comprises the pawl body that can rotate around pawl axis and is positioned at and is used on the pawl body respectively to first ratchet and non-return first ratchet and second ratchet of second ratchet;
Being used to drive the double end ratchet rotates also optionally to first ratchet or the non-return knob of second ratchet.
The utility model improves the brake system of the manual type winch of prior art, and particularly the ratchet device of brake system has adopted two ratchets, double end pawl structures.Wherein, the unidirectional tooth of first ratchet can be and put the anticlockwise direction of rope process coupling, and the unidirectional tooth of second ratchet can be and receive the clockwise direction of rope process coupling.In use; Utilizing knob to drive pawl body rotates to change the matching relationship of double end ratchet and first ratchet and second ratchet around pawl axis; Simultaneously, limit assembly can lock when pawl body turns to desired location, and described matching relationship comprises two kinds:
One, puts matching relationship in the rope process; Be specially pawl body and rotate back entering first control position around pawl axis; The ratchet of winning is inserted stop first ratchet to clockwise rotate direction in the teeth groove of first ratchet; This moment, gear wheel shaft can only rotate counterclockwise, and promptly capstan winch can only be put rope work and realize putting fast rope.
Two, receive matching relationship in the rope process; Be specially pawl body and after the pawl axis backward rotation, get into second control position; Make second ratchet insert and stop second ratchet to rotate counterclockwise direction in the teeth groove of second ratchet; This moment the cw driving handle, handle drive nut then the driven gear axle rotate, promptly capstan winch is received rope work; Because nut has axial movement clearance; Therefore when handle drive nut clockwise rotates; Nut can axially move with respect to gear wheel shaft under the directional tagging of screw thread; Fixing second friction lining is with nut first friction lining of fitting on nut, this moment handle, nut, gear wheel shaft and second ratchet gearing.
Second ratchet and gear wheel shaft normal-running fit; Although therefore second ratchet stops second ratchet to rotate counterclockwise direction; But still can through handle drive nut then the driven gear axle rotate counterclockwise; When handle drive nut rotated counterclockwise, nut can axially move with respect to gear wheel shaft under the directional tagging of screw thread, made second fixing on the nut friction lining break away from first friction lining gradually; The locations that is fixed on gear shaft terminal head position until nut stops that handle drives nut and realizes putting rope when the driven gear axle rotates counterclockwise then.
When weight fell rapidly, the gear wheel shaft rotating speed surpassed the handle rotating speed, and this moment, gear wheel shaft was equivalent to imput shaft; Because its fast speed rotates counterclockwise; Cause nut to do cw motion with respect to gear wheel shaft, nut can axially move with respect to gear wheel shaft under the directional tagging of screw thread, and fixing second friction lining is with nut first friction lining of fitting on nut; This moment handle, nut, gear wheel shaft and second ratchet gearing; Because second ratchet stops second ratchet to rotate counterclockwise, therefore realize braking effect, stop weight further to fall.
Optimal technical scheme as the utility model; Described knob comprises the head that is positioned at the ratchet case outside and is connected and inserts the neck of ratchet case with this head; The position, termination that described neck stretches in the ratchet case is fixed with fork, and described pawl body is provided with the groove that cooperates with this fork.
Preferably, be provided with stage clip between the head of the ratchet case outside and knob, this compression spring sleeve is located at the neck of described knob.After knob was accomplished non-return selection to the double end ratchet, stage clip can make knob reply, and promptly fork breaks away from the groove homing, can protect knob not impaired, thereby increase the service life.
In order further to protect stage clip and Knob mechanisms; The position of running through the ratchet case at knob is provided with the tubular locations of captiveing joint with the ratchet case; The neck of knob runs through this tubular locations, and the inwall of described tubular locations is provided with the annular flange flange that is used to stop the stage clip termination.
A tubular locations end of knob head dorsad is provided with the first step that is used for after knob resets, limiting the fork axial motion, and is used to limit the second step that fork rotates.
In order to realize tubular locations fixing on the ratchet case better; And the purpose of reach simple in structure, being convenient to implement; The inwall of ratchet case is provided with the locating plate around the neck distribution of knob, and described locating plate and tubular locations are through the both sides of screw retention at ratchet case corresponding position.
Further, be provided with the limit assembly that is used to keep described double end ratchet control position, described limit assembly comprises:
Be fixed on fix shaft parallel on the cradle with pawl axis;
With pawl body pivotally attached turning block, this turning block sidewall has slot;
Be installed in rotation on the pilot bar on the fix shaft through axle sleeve, the free end of pilot bar inserts described slot;
Be set in the fastening stage clip on the described pilot bar, the two ends of this fastening stage clip push against slot bottom and described axle sleeve respectively.
Preferably, the locations of described gear shaft terminal head position is for stopping bolt, and described nut is stopping between the bolt and first friction lining and this nut has the gap value of axial motion.This gap value can make described nut axially can produce certain displacement with screw thread motion with gear wheel shaft, makes second friction lining can fit or away from first friction lining.
More preferably, described first friction lining and second friction lining are the corresponding annular arrangement of shape, and wherein first friction lining is fixed on the first ratchet side, and described second friction lining is fixed on a side of said nut.
The utility model improves the brake system of the manual type winch of prior art, and particularly the brake system of winch has adopted two ratchets, double end pawl structures, has realized that winch is in the self-actuating brake of putting the rope mode of operation; The winch of the utility model has improved the safety of operation, and simple in structure, is convenient to implement.
Description of drawings:
Fig. 1 is the exploded view of the two ratchet manual type winches of the utility model;
Fig. 2 is the structural representation of the utility model winch tubular locations;
Fig. 3 is the section-drawing of the utility model winch.
The specific embodiment
Introduce the specific embodiment of the utility model below.
A kind of pair of ratchet manual type winch; As shown in Figure 1 and combine Fig. 3; Comprise capstan winch 3 in the support 1, ratchet case 2, support 1, with the gear wheel shaft 4 and the handle 5 of capstan winch 3 interlocks; One end of gear wheel shaft 4 passes cradle 101 and ratchet case 2, and the gear wheel shaft 4 in the ratchet case 2 is provided with ratchet device 6, and cradle 101 is provided with the lockable mechanism 7 of ratchet device.
Ratchet device 6 comprises and axially setting gradually along gear wheel shaft 4:
Be fixedly set in first ratchet 601 on the gear wheel shaft 4;
Opposing with first ratchet, 601 teeth directionals, and be sleeved on second ratchet 602 on the gear wheel shaft 4 versatilely, this second ratchet 602 side of first ratchet 601 dorsad has first friction lining 603;
With the nut 604 of gear wheel shaft 4 screws thread fit (employing Acme thread), be fixed with on this nut 604 to rotate and fit or away from second friction lining 605 of first friction lining 603, handle 5 is socketed on this nut 604 with driven gear axle 4 with nut 604; First friction lining 603 and second friction lining 605 are the corresponding annular arrangement of shape.
Be fixed on position, gear wheel shaft 4 termination be used for axially stopping nut 604 stop bolt 606, stop to be provided with between the bolt 606 and first friction lining to make the gap value that nut 604 can axial motion.
Lockable mechanism 7 comprises:
Be located at the pawl axis 701 of cradle 101;
Be arranged on the double end ratchet on the pawl axis 701, this double end ratchet comprises the pawl body 702 that can rotate around pawl axis 701 and is positioned at and is used on the pawl body 702 respectively first ratchet 601 and non-return first ratchet 703 and second ratchet 704 of second ratchet 602;
Be used to drive that the double end ratchet rotates and optionally to first ratchet 601 or the non-return knob 705 of second ratchet 602.
Also be provided with the limit assembly 8 that is used to keep pawl body 702 control positioies on the cradle 101, limit assembly 8 comprises:
Be fixed on the cradle 101 fix shaft 801 parallel with pawl axis 701;
With pawl body 702 pivotally attached turning blocks 802, these turning block 802 sidewalls have slot;
Be installed in rotation on the pilot bar 804 on the fix shaft 801 through axle sleeve 803, the free end of pilot bar 804 inserts in the slot of turning block 802;
Be set in the fastening stage clip 805 on the pilot bar 804, the two ends of this fastening stage clip 805 push against slot bottom and axle sleeve 803 respectively.
In the present embodiment, the side that pawl body 702 relatively rotates piece 802 is provided with opening, and the pin jointed end of turning block 802 inserts in this opening, and passes through straight pin 806 with the two connection.
Wherein, Knob 705 comprises the head 751 that is positioned at ratchet case 2 outsides and is connected and inserts the neck 752 of ratchet case 2 with this head 751; The position, termination that neck 752 stretches in the ratchet case 2 is fixed with fork 706, and pawl body 702 is provided with the groove 707 that cooperates with this fork 706.
Further, in the present embodiment, be provided with stage clip 708 between the head 751 of ratchet case 2 outsides and knob 705, this stage clip 708 is set on the neck 752 of knob 705.The position of running through ratchet case 2 at knob 705 is provided with the tubular locations 709 of captiveing joint with ratchet case 2, and the neck 752 of knob 705 runs through this tubular locations 709, and the inwall of tubular locations 709 is provided with the annular flange flange that is used to stop stage clip 708 terminations.
In conjunction with Fig. 2, tubular locations 709 end of knob 705 heads 751 dorsad is provided with the first step 791 that is used for after knob resets, limiting fork 706 axial motions, and is used to limit the second step 792 that fork 706 rotates.
The inwall of ratchet case 2 can also be provided with the locating plate 710 around neck 752 distributions of knob 705, and locating plate 710 passes through the both sides of screw retention at ratchet case 2 corresponding positions with tubular locations 709.
The locations of gear shaft terminal head position is for stopping bolt, and described nut is stopping between the bolt and first friction lining and this nut has the gap value of axial motion.
In order to make the setting of ratchet device more succinct; Structure is convenient to realize (can on the winch basis of prior art, improve); The present embodiment that is arranged on of first ratchet 601 and second ratchet 602 has adopted following structure: the endoporus of first ratchet 601 is a hexagonal hole; Gear wheel shaft 4 is fixed with one or six square nuts, 9, the first ratchets 601 cooperating and gear wheel shaft 4 interlocks through endoporus and this six square nut 9 with the root that cradle 101 intersects; Second ratchet 602 is sheathed on the gear wheel shaft 4 between first ratchet 601 and the nut 604 and is distributed with relative friction lining.
In the utility model; Second ratchet 602 must be received the non-return effect to capstan winch 3 in the rope process with realization with gear wheel shaft 4 interlocks when receiving rope; Therefore adopted the applying between the friction lining to make that second ratchet 602 links with gear wheel shaft 4 in receiving the rope process, concrete working process is following:
Put the rope process for rotating counterclockwise handle, this moment is owing to exist the gap between the head of bolt and the extension, nut and the motion of gear wheel shaft screw thread produce longitudinal travel make friction lining each other away from, so second ratchet and gear wheel shaft are not linkage status at this moment;
Receive the rope process for clockwise rotating handle, nut and the motion of gear wheel shaft screw thread produce longitudinal travel makes friction lining fit each other, and this moment, second ratchet and gear wheel shaft were linkage status at this moment.
In order to make restriction first position of ratchet 601 on gear wheel shaft 4 better, be provided with elastic spring 10 in the endoporus of first ratchet 601.Bolt 606 passes the end that spring shim 12 and axle head pad 11 are locked at gear wheel shaft 4 successively, realizes the axial limiting to nut 604.Pawl axis 701 is provided with circlip for shaft 13 and breaks away to prevent the double end ratchet.
In order to realize the restriction of double end ratchet rotational angle, prevent inordinate rotation and damage the parts of ratchet device that fork 706 can be criss-cross, the angle of rotating with the second step 792 engagement limits forks 706 of tubular locations 709.
In order to protect the parts of ratchet device better, prevent the wearing and tearing in the operational process, the thickness of locating plate 710 is not less than the thickness of fork 706, locating plate 710 be provided with can be at axial ccontaining fork 706 take in mouthfuls 711.
The specific operation process of the utility model is:
Put when rope, knob 705 is inwardly pressed, what make that the fork 17 that is fixed on the knob 705 breaks away from locatings plate 710 takes in mouthfuls 711; Then fork 706 snaps in the groove 706 on the pawl body 702 into; Driving the double end ratchet and press anticlockwise motion to the first ratchet 703 and 601 engagements of first ratchet, is that the double end ratchet gets into first control position, stops first ratchet 601 to clockwise rotate; This moment, gear wheel shaft 4 can only rotate counterclockwise, and promptly capstan winch can only be put rope.
After fork 706 drives pawl body 702 rotations; Unclamp knob 705; Under the effect of stage clip 708; Knob 705 resets together with fork 706, and fork 706 can get into first step 791 and second step 792 present positions, and under the restriction of first step 791 and second step 792 retainer shaft to circumferential position.
Can cross the dead point between pilot bar 804 when the double end ratchet is in first control position in the limit assembly 8 and the turning block 802, turning block 802 can compress the double end ratchet under fastening stage clip 805 effects, makes first ratchet 703 and first ratchet 601 keep mated condition.
Inwardly press when knob 705, what make that the fork that is fixed on the knob 705 706 breaks away from locatings plate 710 takes in mouthfuls 711; Then fork 706 snaps in the groove 706 on the pawl body 702 into, drives the double end ratchet and moves in the direction of the clock to second ratchet 704 and second ratchet 602 and mesh, and promptly the double end ratchet gets into second control position, stops second ratchet 602 to rotate counterclockwise.
Same reason; After fork 706 drives pawl body 702 rotations; Unclamp knob 705, under the effect of stage clip 708, knob 705 resets together with fork 706; Fork 706 can get into first step 791 and second step 792 present positions, and under the restriction of first step 791 and second step 792 retainer shaft to circumferential position.Can cross the dead point between pilot bar 804 when the double end ratchet is in second control position in the limit assembly 8 and the turning block 802, turning block 802 can compress the double end ratchet under fastening stage clip 805 effects, makes second ratchet 704 and second ratchet 602 keep mated condition.
When weight fell rapidly, gear wheel shaft 4 rotating speeds surpassed handle 5 rotating speeds, and this moment, gear wheel shaft 4 was equivalent to imput shaft; Because its fast speed rotates counterclockwise; Cause nut 604 to do the cw motion with respect to gear wheel shaft 4, nut 604 can axially move with respect to gear wheel shaft 4 under the directional tagging of screw thread, and second fixing on nut 604 friction lining 605 is with nut 604 applyings first friction lining 603; Second friction lining 605 is fitted and is compressed first friction lining, 603 back handles 5, nut 604, gear wheel shaft 4 and 602 interlocks of second ratchet; Because second ratchet 704 stops second ratchet 602 to rotate counterclockwise, and therefore can realize braking effect, stops weight further to fall.
Claims (9)
1. two ratchet manual type winch; Comprise capstan winch in the support, ratchet case, support, with the gear wheel shaft and the handle of capstan winch interlock; One end of gear wheel shaft passes cradle and ratchet case, and the gear wheel shaft in the ratchet case is provided with ratchet device, and cradle is provided with the lockable mechanism of ratchet device; It is characterized in that described ratchet device comprises and axially setting gradually along gear wheel shaft:
Be fixedly set in first ratchet on the gear wheel shaft;
With described first hook tooth to opposing, and be sleeved on second ratchet on the gear wheel shaft versatilely, this second ratchet side of first ratchet dorsad has first friction lining;
With the nut of described gear wheel shaft screw thread fit, be fixed with on this nut and can rotate fit or away from second friction lining of said first friction lining, described taper knob is connected on this nut with the driven gear axle with nut;
Be fixed on the locations that is used for axially stopping said nut of gear shaft terminal head position;
Described lockable mechanism comprises:
Be located at the pawl axis of cradle;
Be arranged on the double end ratchet on the pawl axis, this double end ratchet comprises the pawl body that can rotate around pawl axis and is positioned at and is used on the pawl body respectively to first ratchet and non-return first ratchet and second ratchet of second ratchet;
Being used to drive the double end ratchet rotates also optionally to first ratchet or the non-return knob of second ratchet.
2. as claimed in claim 1 pair of ratchet manual type winch; It is characterized in that; Described knob comprises the head that is positioned at the ratchet case outside and is connected and inserts the neck of ratchet case with this head; The position, termination that described neck stretches in the ratchet case is fixed with fork, and described pawl body is provided with the groove that cooperates with this fork.
3. as claimed in claim 2 pair of ratchet manual type winch is characterized in that, is provided with stage clip between the head of the ratchet case outside and knob, and this compression spring sleeve is located at the neck of described knob.
4. as claimed in claim 3 pair of ratchet manual type winch; It is characterized in that; The position of running through the ratchet case at knob is provided with the tubular locations of captiveing joint with the ratchet case; The neck of knob runs through this tubular locations, and the inwall of described tubular locations is provided with the annular flange flange that is used to stop the stage clip termination.
5. as claimed in claim 4 pair of ratchet manual type winch is characterized in that, a tubular locations end of knob head dorsad is provided with the first step that is used for after knob resets, limiting the fork axial motion, and is used to limit the second step that fork rotates.
6. like claim 4 or 5 described pairs of ratchet manual type winches, it is characterized in that the inwall of ratchet case is provided with the locating plate around the neck distribution of knob, described locating plate and tubular locations are through the both sides of screw retention at ratchet case corresponding position.
7. as claimed in claim 1 pair of ratchet manual type winch is characterized in that, is provided with the limit assembly that is used to keep described double end ratchet control position, and described limit assembly comprises:
Be fixed on fix shaft parallel on the cradle with pawl axis;
With pawl body pivotally attached turning block, this turning block sidewall has slot;
Be installed in rotation on the pilot bar on the fix shaft through axle sleeve, the free end of pilot bar inserts described slot;
Be set in the fastening stage clip on the described pilot bar, the two ends of this fastening stage clip push against slot bottom and described axle sleeve respectively.
8. as claimed in claim 1 pair of ratchet manual type winch is characterized in that, the locations of described gear shaft terminal head position is for stopping bolt, and described nut is stopping between the bolt and first friction lining and this nut has the gap value of axial motion.
9. like claim 1 or 8 described pairs of ratchet manual type winches; It is characterized in that; Described first friction lining and second friction lining are the corresponding annular arrangement of shape, and wherein first friction lining is fixed on the first ratchet side, and described second friction lining is fixed on a side of said nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200935195U CN202465165U (en) | 2012-03-13 | 2012-03-13 | Double-ratchet manual type winch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200935195U CN202465165U (en) | 2012-03-13 | 2012-03-13 | Double-ratchet manual type winch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202465165U true CN202465165U (en) | 2012-10-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200935195U Expired - Lifetime CN202465165U (en) | 2012-03-13 | 2012-03-13 | Double-ratchet manual type winch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202465165U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105293331A (en) * | 2015-11-18 | 2016-02-03 | 镇江华虹机械有限公司 | Automatically-controlled efficient winch for integrated breeding industry |
| CN107215794A (en) * | 2017-06-06 | 2017-09-29 | 杭州洛基机械制造有限公司 | Squelch type winch |
| CN108386539A (en) * | 2016-05-04 | 2018-08-10 | 施耐德电气(厦门)开关设备有限公司 | A kind of novel main shaft locking system and lifting handcart driving device |
| CN109938939A (en) * | 2019-04-29 | 2019-06-28 | 江苏苏云医疗器材有限公司 | Flat push lever driving device and wheelchair suitable for wheelchair |
| CN110194423A (en) * | 2019-06-24 | 2019-09-03 | 哈尔滨通达工业环保自动化有限公司 | A kind of anti-reverse transmission system of emergency evacuation door of train |
| US20210309497A1 (en) * | 2018-10-09 | 2021-10-07 | Feradyne Outdoors, Llc | Winch |
| CN114458913A (en) * | 2022-01-27 | 2022-05-10 | 淄博朗达复合材料有限公司 | Pulley principle lifting rod |
| CN116239059A (en) * | 2023-05-12 | 2023-06-09 | 上海果纳半导体技术有限公司 | Crown block lifting device |
-
2012
- 2012-03-13 CN CN2012200935195U patent/CN202465165U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105293331A (en) * | 2015-11-18 | 2016-02-03 | 镇江华虹机械有限公司 | Automatically-controlled efficient winch for integrated breeding industry |
| CN108386539A (en) * | 2016-05-04 | 2018-08-10 | 施耐德电气(厦门)开关设备有限公司 | A kind of novel main shaft locking system and lifting handcart driving device |
| CN107215794A (en) * | 2017-06-06 | 2017-09-29 | 杭州洛基机械制造有限公司 | Squelch type winch |
| US20210309497A1 (en) * | 2018-10-09 | 2021-10-07 | Feradyne Outdoors, Llc | Winch |
| US11884524B2 (en) * | 2018-10-09 | 2024-01-30 | Feradyne Outdoors, Llc | Winch |
| CN109938939A (en) * | 2019-04-29 | 2019-06-28 | 江苏苏云医疗器材有限公司 | Flat push lever driving device and wheelchair suitable for wheelchair |
| CN110194423A (en) * | 2019-06-24 | 2019-09-03 | 哈尔滨通达工业环保自动化有限公司 | A kind of anti-reverse transmission system of emergency evacuation door of train |
| CN110194423B (en) * | 2019-06-24 | 2024-01-30 | 哈尔滨通达工业环保自动化有限公司 | Train emergency evacuation door anti-reversing transmission system |
| CN114458913A (en) * | 2022-01-27 | 2022-05-10 | 淄博朗达复合材料有限公司 | Pulley principle lifting rod |
| CN116239059A (en) * | 2023-05-12 | 2023-06-09 | 上海果纳半导体技术有限公司 | Crown block lifting device |
| CN116239059B (en) * | 2023-05-12 | 2023-08-11 | 上海果纳半导体技术有限公司 | Crown block lifting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121003 |