CN204469055U - Crank handle arrestment mechanism - Google Patents
Crank handle arrestment mechanism Download PDFInfo
- Publication number
- CN204469055U CN204469055U CN201520007213.7U CN201520007213U CN204469055U CN 204469055 U CN204469055 U CN 204469055U CN 201520007213 U CN201520007213 U CN 201520007213U CN 204469055 U CN204469055 U CN 204469055U
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- gear shaft
- ratchet
- crank handle
- gear
- friction
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- 230000007246 mechanism Effects 0.000 title claims abstract description 69
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 230000001360 synchronised effect Effects 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 4
- 239000012634 fragment Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 15
- 230000008569 process Effects 0.000 abstract description 12
- 230000007423 decrease Effects 0.000 abstract description 10
- 230000006872 improvement Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003909 pattern recognition Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Abstract
The utility model relates to a kind of crank handle arrestment mechanism, comprise crank handle and be coaxially mounted to nut assembly and the ratchet friction component of gear shaft (40) one end, described gear shaft (40) other end is used for connection mode switching mechanism, described crank handle is fixedly attached to described nut assembly, and described nut assembly comprises: gear shaft nut (20), gear shaft ratchet (16), gear shaft ratchet (14), the elasticity fitting be arranged on second end (17) of described gear shaft ratchet (16).Thereby, it is possible to the ad infinitum thickness difference that produces of friction compensation pad wear, make nut assembly all the time can pressing friction parts and ratchet, avoid due to friction plate excessive wear and cause the serious consequence of being fallen by rescue personnel; Can in decline process, prevent nut assembly and stopping means and be integrated, the pressure avoiding nut assembly and gear shaft (40) no longer to relatively rotate and produce phenomenon.
Description
Technical field
The utility model relates to a kind of arrestment mechanism, particularly crank handle arrestment mechanism.
Background technology
Current crank handle arrestment mechanism mainly contains Miller (Miller) crank handle arrestment mechanism, general rood section tower (Protecta) crank handle arrestment mechanism etc.This type of crank handle arrestment mechanism comprises crank handle, nut assembly, ratchet friction component and gear shaft.Wherein, crank handle is used for manual control knobs, operates crank; Nut assembly, mainly comprises gear shaft nut, for transmitting the pressure that crank loads when crank rotates clockwise, or for unclamping gear shaft when crank rotates counterclockwise; Ratchet friction component, comprises friction means, ratchet and pawl etc., and for unidirectional locked gear shaft, what prevent manual control knobs to lose efficacy is fallen by rescue personnel; Gear shaft is used for being connected with other workpieces such as gear.
When normal work, crank handle arrestment mechanism is also inoperative, but when the staff hung in the sky is once dangerous situation of falling, crank handle arrestment mechanism can realize the braking function in enhanced feature, decline function and the process of rising or falling to relieved staff.
The implementation of enhanced feature is as follows: rotating crank along clockwise direction, nut assembly moves down along the screw thread on gear shaft, is compressed by ratchet by friction means, and makes it to be tightened to one with gear shaft, by rotating clockwise crank continuously, thus realize enhanced feature.
The implementation of decline function is as follows: rotating crank in the counterclockwise direction, nut assembly moves up along the screw thread on gear shaft, earth pressure release between friction means and ratchet, in the moment of this operation, gear shaft, by by the Action of Gravity Field of rescue personnel, is rotated counterclockwise, friction means below nut assembly has compressed again immediately and ratchet, reach new balance, by continuous counterclockwise rotating crank, thus realize decline function.
Rise and the implementation of locking function in decline process as follows: in lifting or decline process, by nut assembly, friction means and ratchet are compressed, ratchet and gear shaft is made to be tightened to one, ratchet and detent system are in engagement all the time, and ratchet system is fixed on upper casing, even if therefore the hand of rescue personnel is after throwing off the folding handle on crank, can not be fallen by rescue personnel or comparatively Sliding with large distance, thus prevent from being fallen by rescue personnel.
But still there is following defect in current crank handle arrestment mechanism:
One, in lifting process, the card article that nut assembly generally adopts the draw-in groove restriction being less than 180 degree to fix with gear shaft, along with the continuous wearing and tearing of friction plate, nut assembly can move down and pressing friction parts and ratchet relatively along gear shaft, for the thickness difference that friction compensation pad wear produces, between the card article causing nut assembly draw-in groove and gear shaft to fix thus, angle will constantly diminish, last until card article is fitted and draw-in groove position and cannot further rotating again completely, now will there is nut assembly cannot relatively move down along gear shaft again, therefore cannot again friction compensation pad wear produce thickness difference, in other words, also just cannot pressing friction parts and ratchet again, the ratchet locking of crank handle arrestment mechanism will be made thus to lose efficacy, thus cause the serious consequence of being fallen by rescue personnel.
Two, in decline process, because nut assembly opposed gear axially moves, therefore nut assembly all adopts stopping means, namely make nut assembly also can only turn to certain angle at most counterclockwise, can be spun out above gear shaft when promoting to prevent nut assembly, but, continue firmly after forwarding maximum angle to, nut assembly will to be integrated with stopping means, at this moment nut assembly and gear shaft would not relatively rotate, this is called as pressure and phenomenon, now cannot fall by rescue personnel smoothly again.
Meanwhile, for current crank handle arrestment mechanism, usual employing pattern switching mechanism switches fall arrest pattern and the rescue mode after falling.Existing pattern switching mechanism is generally by regulating the gear coaxial with gear shaft to be achieved.Specifically, when the key pin on gear and gear shaft departs from, gear and external gear are in relaxed state, and pattern switching mechanism is in fall arrest pattern; When gear engages with the key pin on gear shaft, gear and external gear are in engagement, and pattern switching mechanism is in rescue mode.
But still there is following defect in the pattern switching mechanism structure of current crank handle brake: one, due to gear engage with the key pin on gear shaft time, stress concentrate, so easily damage gear.Two, pattern switching mechanism cannot be observed intuitively to be in that pattern.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of crank handle arrestment mechanism, while realizing existing all functions, the accident caused because friction plate lost efficacy can be prevented on the one hand more safely, can effectively avoid on the other hand pressing and phenomenon and the accident that causes.Further, the utility model can also provide a kind of pattern switching mechanism, can switch between fall arrest pattern and rescue mode easily.
For solving the problems of the technologies described above, crank handle arrestment mechanism of the present utility model, comprise gear shaft, crank handle and be coaxially mounted to nut assembly and the ratchet friction component of gear shaft one end, the gear shaft other end is used for connection mode switching mechanism, crank handle is fixedly attached to nut assembly, ratchet friction component comprises the ratchet mechanism for the one-way movement of control gear axle, it is characterized in that, nut assembly comprises: gear shaft nut, its one end is fixedly connected with crank handle, the other end is threaded io gear shaft, and the inside of gear shaft nut is provided with guide groove; Gear shaft ratchet, it to be accommodated in guide groove and to rotate with the rotation of gear shaft nut, gear shaft ratchet has axially extending bore and the relative first end radially outward given prominence to from outer peripheral face and the second end, and first end is abutted with the inwall circumference of guide groove by biasing member; Gear shaft ratchet, it is accommodated in the axially extending bore of gear shaft ratchet, and have can be fixedly sleeved to the axially extending bore on gear shaft and from radially outward outstanding at least one the relative ratchet cutting edge of a knife or a sword of outer peripheral face, and the ratchet cutting edge of a knife or a sword back side is provided with stop surface; Wherein, nut assembly also comprises the elasticity fitting be arranged on the second end of gear shaft ratchet, and it radially-inwardly stretches out from the second end the outer peripheral face abutting gear shaft ratchet.
Have employed crank handle arrestment mechanism of the present utility model, have the following advantages: one, intactly can realize existing crank handle arrestment mechanism to the braking function in the enhanced feature of relieved staff, decline function and process of rising or falling; Two, can the ad infinitum thickness difference that produces of friction compensation pad wear, make nut assembly all the time can pressing friction parts and ratchet, thus avoid due to friction plate excessive wear and cause the serious consequence of being fallen by rescue personnel; Three, in decline process, prevent nut assembly and stopping means and be integrated, the pressure avoiding nut assembly and gear shaft no longer to relatively rotate and produce phenomenon, thus making can be fallen smoothly by rescue personnel.
As further improvement of the utility model, elasticity fitting is inserted in radial hole that the second end is arranged, and comprises gear shaft ratchet pin spring and to be driven by gear shaft ratchet pin spring and part protrudes from the pin of radial hole.Further, radial hole is through hole, and elasticity fitting also comprises and to abut with gear shaft ratchet pin spring and to seal pin for suppressing metal or the trip bolt of radial hole.Thus, the effect that pin reliably props up gear shaft ratchet under the effect of gear shaft ratchet pin spring can be realized, ensure ratchet energy and can only one-directional rotation.
As further improvement of the utility model, biasing member is shell fragment or spring, such as gear shaft ratchet spring.Thus, can, according to concrete size and space size, suitable shell fragment or spring be selected more effectively can to play its effect as biasing member.
As further improvement of the utility model, crank handle is fixed on nut assembly by screw.Screw fixation method has simple and firmly feature, and many screws are fixed and can be played such effect.
As further improvement of the utility model, the ratchet mechanism in ratchet friction component comprise ratchet, can with the ratchet that ratchet clamps, the corresponding friction means supported between shoulder of gear shaft that is arranged between ratchet and gear shaft nut respectively and is arranged at ratchet and is located.
As further improvement of the utility model, ratchet is arranged on fixing ratchet base by elastic component, and described elastic component can be ratchet torsion spring.Ratchet can be protected better thus, extend ratchet service life.
As further improvement of the utility model, ratchet friction component also comprises ratchet axle sleeve, is arranged to its interference fit the empty internal of ratchet and can be located at gear shaft by fixed cover.Make ratchet be placed on gear shaft joint by ratchet shaft thus, thus protect ratchet and extend its service life.
As further improvement of the utility model, friction means comprises friction shim and friction plate, and the through hole that at least one friction shim is sheathed on non-circular portion corresponding to gear shaft is set to non-circular, make this friction shim can with gear shaft synchronous axial system.Thus, when ratchet friction component is in the state of compression, better friction effect can be reached, make ratchet friction component together with gear shaft synchronous axial system.
As further improvement of the utility model, pattern switching mechanism is for switching fall arrest pattern and rescue mode.Further, pattern switching mechanism comprises the device of the gear coaxial with gear shaft and adjusting gear opposed gear shaft position.Because the method that have employed adjustment gear opposed gear shaft position carries out pattern switching, and the method not adopting gear of the prior art to engage with the key pin on gear shaft carries out pattern switching, therefore the stress improved when gear engages with gear shaft is concentrated, and extends service life of gear.
As further improvement of the utility model, the device of adjusting gear opposed gear shaft position is the adapter sleeve be placed on gear shaft, one end of adapter sleeve and gear are fitted, the other end abuts the gear handle with adapter sleeve synchronous rotary, adapter sleeve inside is provided with two mutually in the step groove of 90 degree, can transmitting gear handle to regulate the rotational angle of adapter sleeve.Thus, the object of the relative position of adjusting gear opposed gear axle just can be realized by the structure of adapter sleeve inside.
As further improvement of the utility model, gear matches with external gear, and when gear and external gear are in Different Plane, gear and external gear are thrown off, and are in fall arrest pattern; When gear and external gear are in same level, gear engages with external gear, is in rescue mode.Further, the end of gear shaft is provided with the switch mode label corresponding from the different step groove in adapter sleeve, is used to indicate the pattern of pattern switching mechanism.Can switch fall arrest pattern and rescue mode exactly thus, and the concrete pattern residing for pattern switching mechanism can be observed intuitively.
Accompanying drawing explanation
Below in conjunction with accompanying drawing 1-10, preferred version of the present utility model is specifically described.
Fig. 1 is the decomposing schematic representation of crank handle arrestment mechanism of the present utility model.
Fig. 2 is the sectional view of crank handle arrestment mechanism of the present utility model.
Fig. 3 is the installation diagram of crank handle arrestment mechanism of the present utility model.
Fig. 4 is the stereogram of nut assembly of the present utility model.
Fig. 5 is the exploded pictorial side view of pattern switching mechanism of the present utility model.
Fig. 6 is the exploded pictorial stereogram of pattern switching mechanism of the present utility model.
Fig. 7 is the side view of pattern switching mechanism of the present utility model when being in fall arrest pattern.
Fig. 8 is the stereogram of pattern switching mechanism of the present utility model when being in fall arrest pattern.
Fig. 9 is the side view of pattern switching mechanism of the present utility model when being in rescue mode.
Figure 10 is the stereogram of pattern switching mechanism of the present utility model when being in rescue mode.
Figure 11 is the stereogram of adapter sleeve of the present utility model.
Detailed description of the invention
As shown in Figures 1 to 4, crank handle arrestment mechanism of the present utility model comprises crank handle, nut assembly, ratchet friction component and gear shaft 40.
Crank handle comprises the crank 4 that folding handle 2 and one end are attached thereto.The other end of crank 4 is connected with nut assembly.Specifically, crank 4 is positioned at directly over gear shaft nut 20, and 4 screws 6, through 4 through holes on this one end of crank 4, are tightened in 4 corresponding screws of gear shaft nut 20, thus are fixed up in crank 4 end and gear shaft nut 20.
Nut assembly comprises gear shaft nut 20, gear shaft ratchet 16, gear shaft ratchet 14, gear shaft ratchet spring 18, trip bolt 10, gear shaft ratchet pin spring 8 and pin 12.Wherein:
Gear shaft nut 20, its one end is fixedly connected with crank handle, and the other end is threaded io gear shaft 40, and the inside of gear shaft nut 20 is provided with guide groove 19;
Gear shaft ratchet 16, it to be accommodated in guide groove 19 and to rotate with the rotation of gear shaft nut 20, gear shaft ratchet 16 has axially extending bore 13 and the relative first end 15 radially outward given prominence to from outer peripheral face and the second end 17, and first end 15 is abutted with the inwall circumference of guide groove 19 by biasing member;
Gear shaft ratchet 14, it is accommodated in the axially extending bore 13 of gear shaft ratchet 16, and have can be fixedly sleeved to the axially extending bore 13 on gear shaft 40 and from radially outward outstanding at least one the relative ratchet cutting edge of a knife or a sword of outer peripheral face, and the ratchet cutting edge of a knife or a sword back side is provided with stop surface;
In addition, second end 17 of gear shaft ratchet 16 is provided with radial direction through hole 11, the fastened screw 10 of far-end of radial direction through hole 11 is shut, gear shaft ratchet pin spring 8 one end be arranged in radial direction through hole 11 props up trip bolt 10, the other end props up part and is positioned at the pin 12 of radial direction through hole 11, and the part that pin 12 exposes radial direction through hole 11 radially-inwardly stretches out to abut the outer peripheral face of gear shaft ratchet 14.
Ratchet friction component is positioned at immediately below gear shaft nut 20, comprising: the lower friction shim 38 of non-round mesopore, lower friction plate 30, the ratchet 28 with ratchet axle sleeve 26, upper friction plate 24, upper friction shim 22 are from inside to outside placed on gear shaft 40 successively.Wherein, ratchet axle sleeve 26 is positioned at the hollow space of ratchet 28, both employings interference fit closely; The lower friction shim 38 being positioned at the non-round mesopore of bottom is sheathed on the non-circular support shoulder of gear shaft 40 correspondence, make lower friction shim 38 can with gear shaft 40 synchronous axial system.In the same plane of ratchet 28, be provided with the ratchet 32 that can clamp with ratchet 28, fixed pawl 32 is arranged on fixing ratchet base 36 by ratchet torsion spring 34.
The function of the wear-compensating of friction plate is by comprising gear shaft ratchet 16, gear shaft ratchet 14, gear shaft ratchet spring 18, pin 12, pin for suppressing metal 10 and gear shaft ratchet pin spring 8 are achieved at interior nut assembly, specific implementation process prescription is as follows: promote by the process of rescue personnel in enforcement, under crank handle drives, gear shaft 40 rotates clockwise, upper friction plate 24 and lower friction plate 30 can constantly be worn consumption, gear shaft nut 20 can all the time along the screw thread of gear shaft 40, compress upper friction shim 22 below, upper friction plate 24, ratchet 28, lower friction plate 30 and lower friction shim 38, now, because gear shaft ratchet 14 is fixed on gear shaft 40, when promoting, gear shaft ratchet 16 will turn clockwise together with gear shaft nut 20, and gear shaft ratchet 14 can be striden across rotate clockwise, and it is not interrupted, thus realize the thickness difference of ad infinitum friction compensation pad wear generation, make nut assembly all the time can pressing friction parts and ratchet
The function of pressing also phenomenon is avoided to be by comprising gear shaft ratchet 16, gear shaft ratchet 14, gear shaft ratchet spring 18, pin 12, pin for suppressing metal 10 and gear shaft ratchet pin spring 8 are achieved at interior nut assembly, specific implementation process prescription is as follows: implementing to put down in the process by rescue personnel, under crank handle drives, gear shaft 40 rotates counterclockwise, if there is pressure and phenomenon in the ratchet friction component be now positioned at below gear shaft nut 20, so when rotating counterclockwise gear shaft nut 20, due to the pressure of gear shaft ratchet spring 18, just make gear shaft ratchet 16 and gear shaft nut 20 keep geo-stationary and together with rotate, when gear shaft ratchet 14 encountered by pin 12, gear shaft ratchet 16 starts to compress gear shaft ratchet spring 18, now gear shaft ratchet 16 and gear shaft nut 20 start to relatively rotate, until gear shaft ratchet 16 other end and gear shaft nut 20 press and together with, now be rotated further gear shaft nut 20, pin 12 will promote the rotation of gear shaft nut 20, the pressure of ratchet friction component state will be released, thus start to realize decline function, at this time gear shaft nut 20 and gear shaft ratchet 16 are because of the pressure having the gear ratchet spring 18 being now in compressive state, would not be pressed also, thus can fall by rescue personnel smoothly.
As shown in Figure 5 and Figure 6, gear shaft 40 disconnected in the other end connection mode switching mechanism of nut assembly and ratchet friction component, pattern switching mechanism is for switching fall arrest pattern and rescue mode.The pattern-recognition mechanism of crank handle arrestment mechanism of the present utility model, comprises gear shaft 40 and is arranged in gear 42, adapter sleeve 44, gear handle 46, the switch mode label 48 on gear shaft 40 successively.The bottom of adapter sleeve 44 directly props up gear 42, by changing adapter sleeve 44 and the binding site of gear shaft 40, just can change the position of gear 42 relative to gear shaft 40.The bottom of gear handle 46 directly props up the top of adapter sleeve 44, and gear handle 46 and adapter sleeve 44 can synchronous rotaries, and switch mode label 48 is affixed on the visible position, top of gear handle 46.
In order to describe the interior shape of adapter sleeve 44 better, adapter sleeve 44 is turned, Figure 11 is its stereogram, the top of adapter sleeve 44 is the gear shaft through hole 60 suitable with gear shaft 40, adapter sleeve 44 inside is provided with two mutually in the step groove 66 and 64 of 90 degree, the bottom of adapter sleeve 44 is annular 62, for directly propping up gear 42.Because gear handle 46 and adapter sleeve 44 are synchronous rotaries, therefore by transmitting gear handle 46, the angle of adapter sleeve 44 can be changed, and then different step groove 66 or 64 dropping place in adapter sleeve 44 can be made in the correspondence position of gear shaft 40, thus the relative position of adjusting gear 42 opposed gear axle 40.
As shown in Figure 7 and Figure 8, for correspondence position in step groove 64 dropping place in adapter sleeve 44 to the axle of gear shaft 40, now gear 42 is just in the position lower relative to gear shaft 40, therefore gear 42 is lower than external gear 50 place plane, both throw off, and now pattern switching mechanism is in fall arrest pattern.As shown in Figure 9 and Figure 10, for correspondence position in step groove 66 dropping place in adapter sleeve 44 to the axle of gear shaft 40, now gear 42 is just in the position higher relative to gear shaft 40, therefore gear 42 and external gear 50 are positioned at same plane, both engagements, now pattern switching mechanism is in rescue mode.
As is seen in figs 7-10, because gear handle 46 and adapter sleeve 44 are synchronous rotaries, therefore the concrete dropping place step groove that the switch mode label 48 being affixed on gear handle 46 top visible location can demonstrate in adapter sleeve 44 is exactly 66 or 64, if step groove 66 corresponding rescue mode, if the corresponding fall arrest pattern of step groove 64, therefore switch mode label 48 is used to indicate the pattern of pattern switching mechanism.
By reference to the accompanying drawings embodiment of the present utility model is elaborated above, but the utility model is not limited to above-mentioned embodiment, in the ken that art those of ordinary skill possesses, various change can also be made under the prerequisite not departing from the utility model aim.
Claims (14)
1. a crank handle arrestment mechanism, comprise gear shaft (40), crank handle and be coaxially mounted to nut assembly and the ratchet friction component of described gear shaft (40) one end, described gear shaft (40) other end is used for connection mode switching mechanism, described crank handle is fixedly attached to described nut assembly, described ratchet friction component comprises the ratchet mechanism for controlling described gear shaft (40) one-way movement, it is characterized in that, described nut assembly comprises:
Gear shaft nut (20), its one end is fixedly connected with described crank handle, and the other end is threaded io described gear shaft (40), and the inside of described gear shaft nut (20) is provided with guide groove (19);
Gear shaft ratchet (16), it to be accommodated in described guide groove (19) and to rotate with the rotation of described gear shaft nut (20), described gear shaft ratchet (16) has axially extending bore (13) and the relative first end (15) radially outward given prominence to from outer peripheral face and the second end (17), and described first end (15) is abutted with the inwall circumference of described guide groove (19) by biasing member;
Gear shaft ratchet (14), it is accommodated in the axially extending bore (13) of described gear shaft ratchet (16), and have can be fixedly sleeved to the axially extending bore on described gear shaft (40) and from radially outward outstanding at least one the relative ratchet cutting edge of a knife or a sword of outer peripheral face, the described ratchet cutting edge of a knife or a sword back side is provided with stop surface;
Wherein, described nut assembly also comprises the elasticity fitting on the second end (17) being arranged on described gear shaft ratchet (16), and it radially-inwardly stretches out from described second end (17) outer peripheral face abutting described gear shaft ratchet (14).
2. crank handle arrestment mechanism as claimed in claim 1, it is characterized in that, described elasticity fitting is inserted in the upper radial hole (11) arranged of described second end (17), and comprises gear shaft ratchet pin spring (8) and by described gear shaft ratchet pin spring (8) flexible drive and part protrudes from the pin (12) of radial hole (11).
3. crank handle arrestment mechanism as claimed in claim 2, it is characterized in that, described radial hole (11) is through hole, and described elasticity fitting also comprises and to abut with described gear shaft ratchet pin spring (8) and to seal pin for suppressing metal or the trip bolt (10) of described radial hole (11).
4. crank handle arrestment mechanism as claimed in claim 1, it is characterized in that, described biasing member is shell fragment or spring.
5. crank handle arrestment mechanism as claimed in claim 1, is characterized in that, described crank handle is fixed on described nut assembly by screw (6).
6. crank handle arrestment mechanism as claimed in claim 1, it is characterized in that, the described ratchet mechanism in described ratchet friction component comprises ratchet (28), the ratchet (32) that can clamp with described ratchet (28), the corresponding friction means supported between shoulder of described gear shaft (40) that is arranged between described ratchet (28) and described gear shaft nut (20) respectively and is arranged at described ratchet (28) and is located.
7. crank handle arrestment mechanism as claimed in claim 6, it is characterized in that, described ratchet (32) is arranged on fixing ratchet base (36) by elastic component.
8. crank handle arrestment mechanism as claimed in claim 6, it is characterized in that, described ratchet friction component also comprises ratchet axle sleeve (26), is arranged to its interference fit the empty internal of described ratchet (28) and can be located at described gear shaft (40) by fixed cover.
9. crank handle arrestment mechanism as claimed in claim 6, it is characterized in that, described friction means comprises friction shim (22,38) and friction plate (24,30), the through hole that described friction shim (38) is sheathed on non-circular portion corresponding to described gear shaft (40) is set to non-circular, make described friction shim (38) can with described gear shaft (40) synchronous axial system.
10. the crank handle arrestment mechanism as described in as arbitrary in claim 1 to 9, it is characterized in that, described pattern switching mechanism is for switching fall arrest pattern and rescue mode.
11. crank handle arrestment mechanisms as claimed in claim 10, it is characterized in that, described pattern switching mechanism comprises the gear (42) coaxial with described gear shaft (40) and regulates the device of described gear (42) relative described gear shaft (40) position.
12. crank handle arrestment mechanisms as claimed in claim 11, it is characterized in that, the device of described adjusting gear opposed gear shaft position is the adapter sleeve (44) be placed on described gear shaft, one end and the described gear (42) of described adapter sleeve (44) are fitted, the other end abuts the gear handle (46) with described adapter sleeve (44) synchronous rotary, described adapter sleeve (44) inside is provided with two mutually in the step groove (64 of 90 degree, 66), described gear handle (46) can be rotated to regulate the rotational angle of described adapter sleeve (44).
13. crank handle arrestment mechanisms as claimed in claim 12, it is characterized in that, described gear (42) matches with external gear (50), when described gear (42) is in Different Plane with external gear, described gear (42) and described external gear (50) are thrown off, and are in fall arrest pattern; When described gear (42) is in same level with described external gear (50), described gear (42) engages with described external gear (50), is in rescue mode.
14. crank handle arrestment mechanisms as claimed in claim 13, it is characterized in that, the end of described gear shaft (40) is provided with the switch mode label (48) corresponding from the different step groove (64,66) in described adapter sleeve (44).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520007213.7U CN204469055U (en) | 2015-01-06 | 2015-01-06 | Crank handle arrestment mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520007213.7U CN204469055U (en) | 2015-01-06 | 2015-01-06 | Crank handle arrestment mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204469055U true CN204469055U (en) | 2015-07-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520007213.7U Expired - Fee Related CN204469055U (en) | 2015-01-06 | 2015-01-06 | Crank handle arrestment mechanism |
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| Country | Link |
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| CN (1) | CN204469055U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110815288A (en) * | 2018-08-09 | 2020-02-21 | 达明机器人股份有限公司 | Brake device of robot arm |
-
2015
- 2015-01-06 CN CN201520007213.7U patent/CN204469055U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110815288A (en) * | 2018-08-09 | 2020-02-21 | 达明机器人股份有限公司 | Brake device of robot arm |
| CN110815288B (en) * | 2018-08-09 | 2022-06-21 | 达明机器人股份有限公司 | Brake device of robot arm |
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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: 20150715 Termination date: 20220106 |