CN215287781U - Multifunctional stroke limiter - Google Patents
Multifunctional stroke limiter Download PDFInfo
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- CN215287781U CN215287781U CN202121594142.7U CN202121594142U CN215287781U CN 215287781 U CN215287781 U CN 215287781U CN 202121594142 U CN202121594142 U CN 202121594142U CN 215287781 U CN215287781 U CN 215287781U
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Abstract
The utility model provides a multi-functional stroke stopper which characterized in that: a worm and a first bevel gear are fixedly arranged on the transmission shaft; the encoder is connected with an input shaft which is perpendicular to the transmission shaft, a second bevel gear is fixedly arranged on the input shaft, and the second bevel gear is meshed with the first bevel gear; the limiting cam mechanism comprises a central shaft and a plurality of cam assemblies arranged on the central shaft, and the central shaft is vertical to the transmission shaft; the central shaft is in transmission connection with the transmission shaft through a gear transmission mechanism, and the gear transmission mechanism comprises a worm wheel and is meshed with the worm. The advantages are that: the transmission shaft is simultaneously provided with the worm and the first bevel gear, the transmission fit with the encoder is realized through the mutual meshing of the first bevel gear and the second bevel gear, and the transmission fit with the central shaft is realized through the worm and the gear transmission mechanism, so that the whole layout is compact and reasonable, the assembly and disassembly are convenient, and the precision is high.
Description
Technical Field
The utility model relates to a stroke stopper, concretely relates to multi-functional stroke stopper.
Background
Travel limiters are used in control circuits for tower cranes or harbour hoisting machines and similar machines. At present, the current stroke limiter with an encoder on the market is mostly matched with a synchronous belt and a synchronous wheel to realize the transmission between the encoder and a transmission shaft, so that the required functions are completed, but the installation is not only more troublesome, but also the cost is higher.
SUMMERY OF THE UTILITY MODEL
In order to overcome the deficiency of the background art, the utility model provides a multifunctional stroke limiter.
The utility model discloses the technical scheme who adopts: a multifunctional stroke limiter comprises a shell, a transmission shaft, an encoder, a limiting cam mechanism and a gear transmission mechanism, wherein the transmission shaft, the encoder, the limiting cam mechanism and the gear transmission mechanism are arranged in the shell; the encoder is connected with an input shaft which is perpendicular to the transmission shaft, a second bevel gear is fixedly arranged on the input shaft, and the second bevel gear is meshed with the first bevel gear; the limiting cam mechanism comprises a central shaft and a plurality of cam assemblies arranged on the central shaft, and the central shaft is perpendicular to the transmission shaft; the gear transmission mechanism comprises an intermediate shaft, a worm wheel, a first gear, a second gear, a third gear and a fourth gear, the intermediate shaft is arranged in parallel with the central shaft, the worm wheel is rotatably arranged on the central shaft and meshed with the worm, the first gear is rotatably arranged on the central shaft and connected with the worm wheel into a whole, the second gear and the third gear are fixedly arranged on the intermediate shaft and meshed with the first gear, and the fourth gear is fixedly arranged on the central shaft and meshed with the third gear.
The shell comprises a base and an upper cover, wherein positioning bosses are integrally formed at four corners of the base, mounting holes are formed in the positioning bosses, and the base is fixedly connected with the upper cover through fixing screws.
And a sealing gasket is arranged between the base and the upper cover.
The limiting cam mechanism further comprises an adjusting assembly, the cam assembly comprises an upper baffle, a lower baffle and a cam ring, the upper baffle and the lower baffle are fixed on the central shaft, the cam ring is arranged between the upper baffle and the lower baffle and can rotate relative to the upper baffle and the lower baffle, and an inner ring gear is formed in an inner ring of the cam ring; the adjusting assembly comprises an adjusting shaft and an elastic piece, the adjusting shaft is arranged in parallel with the central shaft and penetrates through the upper baffle and the lower baffle, a combination tooth matched with the inner gear ring is formed on the adjusting shaft, the adjusting shaft can slide up and down along the axial direction of the adjusting shaft, the adjusting shaft is provided with a first position which is locked with the upper baffle in a circumferential limiting mode and a second position which is unlocked with the upper baffle and can rotate in the circumferential direction, and the elastic piece can drive the adjusting shaft to keep the first position.
The upper end face of the combination tooth is provided with end face teeth, the lower end face of the upper baffle is correspondingly provided with limit teeth, and when the adjusting shaft is located at the first position, the end face teeth are meshed with the limit teeth to form circumferential limit matching.
The elastic piece is a spring, one end of the spring is abutted against the lower baffle plate, and the other end of the spring is abutted against the lower end face of the combination tooth.
The utility model has the advantages that: the transmission shaft is simultaneously provided with the worm and the first bevel gear, the transmission cooperation with the encoder is realized through the intermeshing of the first bevel gear and the second bevel gear, the encoder is driven to achieve the required purpose, the worm and the gear transmission mechanism are used for realizing the transmission cooperation with the central shaft, and the cam component on the central shaft is driven to rotate to achieve the required purpose.
Drawings
Fig. 1 is a schematic structural diagram 1 of the multifunctional stroke limiter according to the embodiment of the present invention.
Fig. 2 is a schematic structural diagram 2 of the multifunctional stroke limiter according to the embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a limiting cam mechanism according to an embodiment of the present invention.
Fig. 4 is an exploded view of one set of cam assembly and adjustment assembly according to an embodiment of the present invention.
Detailed Description
The embodiments of the present invention will be further explained with reference to the accompanying drawings:
as shown in the figure, the multifunctional travel limiter comprises a shell 1, and a transmission shaft 2, an encoder 3, a limiting cam mechanism 4 and a gear transmission mechanism 5 which are arranged in the shell 1.
A supporting plate is arranged between the base 11 and the upper cover 12, the encoder 3 and the limiting cam mechanism 4 are arranged above the supporting plate, and the gear transmission mechanism 5 is arranged below the supporting plate.
Two ends of the transmission shaft 2 respectively penetrate through the front side wall and the rear side wall of the shell 1, and a worm 21 and a first bevel gear 22 are fixedly arranged on the transmission shaft 2.
The encoder 3 is connected with an input shaft 31 which is arranged perpendicular to the transmission shaft 2, the input shaft 31 penetrates through the support plate and is fixedly provided with a second bevel gear 32, and the second bevel gear 32 is meshed with the first bevel gear 22.
The limiting cam mechanism 4 comprises a central shaft 41 and a plurality of cam assemblies 42 arranged on the central shaft 41, micro switches corresponding to the cam assemblies 42 are further arranged on the supporting plate, the central shaft 41 is perpendicular to the transmission shaft 2, and the central shaft 41 penetrates through the supporting plate downwards.
The gear transmission mechanism 5 comprises an intermediate shaft 51, a worm gear 52, a first gear 53, a second gear 54, a third gear 55 and a fourth gear 56, wherein the intermediate shaft 51 is arranged in parallel with the central shaft 41, the worm gear 52 is rotatably arranged on the central shaft 41 and is meshed with the worm 21, the first gear 53 is rotatably arranged on the central shaft 41 and is connected with the worm gear 52 into a whole, the second gear 54 and the third gear 55 are fixedly arranged in the intermediate shaft 51, the second gear 54 is meshed with the first gear 53, and the fourth gear 56 is fixedly arranged on the central shaft 41 and is meshed with the third gear 55.
The transmission shaft 2 is engaged with the encoder 3 through the first bevel gear 22 and the second bevel gear 32, so that the encoder can be driven to operate to achieve a required purpose, meanwhile, the transmission shaft 2 drives the worm wheel 52 to rotate through the worm 21, because the first gear 53 and the worm wheel 52 are integrated, the first gear 53 can synchronously rotate along with the worm wheel 52, the first gear 53 can drive the second gear 54 to rotate, because the third gear 55 and the second gear 54 are integrated through the intermediate shaft 51, the third gear 55 can synchronously rotate along with the second gear 54, the third gear 55 can drive the fourth gear 56 to rotate, the fourth gear 56 drives the central shaft 41 to synchronously rotate, the central shaft 41 can drive each group of cam assemblies 42 thereon to rotate, and the cam assemblies 42 can be matched with corresponding micro switches to achieve the purpose of control.
By adopting the stroke limiter, the whole layout is compact and reasonable, the dismounting is convenient, and the precision is high.
In addition, a sealing gasket 14 is arranged between the base 11 and the upper cover 12, so that the purposes of sealing and water proofing can be achieved.
The limiting cam mechanism 4 further comprises an adjusting component 43.
The cam assembly 42 comprises an upper baffle 421, a lower baffle 422 and a cam ring 423, wherein the centers of the upper baffle 421 and the lower baffle 422 are fixedly arranged on the central shaft 41, the cam ring 423 is arranged between the upper baffle 421 and the lower baffle 422 and forms a rotating fit with the upper baffle 421 and the lower baffle 422 so as to facilitate the rotating adjustment of the cam ring 23, and an inner ring gear 4231 is formed in the inner ring of the cam ring 423.
The number of the adjusting assemblies 43 is the same as that of the cam assemblies 42, and each group of adjusting assemblies 43 is correspondingly matched with one group of cam assemblies 42 respectively and is used for adjusting the position angle of each group of cam assemblies 42 respectively.
The adjusting assembly 43 comprises an adjusting shaft 431 and an elastic member 432, the adjusting shaft 431 is arranged in parallel with the central shaft 41, the adjusting shafts of the adjusting assemblies of each group have different lengths and are uniformly distributed along the central circumference of the central shaft 41, one end of the adjusting shaft extends into a cam ring 423 matched with one group of cam assemblies 42, a combination tooth 4311 matched with an inner ring gear 4231 of the inner ring of the cam ring 423 is formed, the adjusting shaft 431 can slide up and down along the axial direction of the adjusting shaft 431, and has a first position capable of being locked with the upper baffle 421 for circumferential limit and a second position capable of being unlocked with the upper baffle 421 and rotating circumferentially, and the elastic member 432 can drive the adjusting shaft 431 to keep at the first position.
The adjusting shaft 431 is provided with end face teeth on the upper end face of the combining teeth 4311 and limit teeth correspondingly on the lower end face of the upper baffle 421, and the adjusting shaft 431 can form circumferential limit fit with the upper baffle 421 when in the first position in a mode of meshing the end face teeth with the combining teeth.
The elastic member 432 is a spring, one end of the spring abuts against the lower baffle 422, the other end of the spring abuts against the lower end surface of the combining tooth 4311, and the spring drives the adjusting shaft 431 to move upwards, so that the adjusting shaft 431 is kept at the first position.
An operation hole which can be matched with a screwdriver is formed at the upper end of the adjusting shaft 431.
When the position of the cam assembly needs to be adjusted, firstly, the screwdriver is aligned with the operation hole and pressed downwards, so that the adjusting shaft 431 is pushed to move downwards, the adjusting shaft 431 is enabled to reach the second position, then the rotating screwdriver drives the adjusting shaft 431 to rotate synchronously, the adjusting shaft 431 is matched with the gear between the combination teeth 4311 and the inner gear ring 4231 to achieve rotation adjustment of the cam ring 423, after adjustment is completed, the adjusting shaft 431 is loosened to enable the adjusting shaft 431 to reset under the action of the elastic piece 432 and be kept at the first position, the adjusting shaft 431 is locked and cannot rotate, and meanwhile, the cam ring 423 cannot rotate through the gear matching between the combination teeth 4311 and the inner gear ring 4231.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
The skilled person should understand that: although the present invention has been described in accordance with the above embodiments, the inventive concept is not limited to this embodiment, and any modification of the inventive concept will be included in the scope of the patent claims.
Claims (6)
1. The utility model provides a multi-functional stroke stopper, includes casing (1) and installs transmission shaft (2), encoder (3), spacing cam mechanism (4) and gear drive (5) in casing (1), its characterized in that:
two ends of the transmission shaft (2) respectively penetrate through the front side wall and the rear side wall of the shell (1), and a worm (21) and a first bevel gear (22) are fixedly arranged on the transmission shaft (2);
the encoder (3) is connected with an input shaft (31) which is perpendicular to the transmission shaft (2), a second bevel gear (32) is fixedly arranged on the input shaft (31), and the second bevel gear (32) is meshed with the first bevel gear (22);
the limiting cam mechanism (4) comprises a central shaft (41) and a plurality of cam assemblies (42) arranged on the central shaft (41), and the central shaft (41) is vertical to the transmission shaft (2);
the gear transmission mechanism (5) comprises an intermediate shaft (51), a worm wheel (52), a first gear (53), a second gear (54), a third gear (55) and a fourth gear (56), wherein the intermediate shaft (51) is arranged in parallel with the central shaft (41), the worm wheel (52) is rotatably arranged on the central shaft (41) and meshed with the worm (21), the first gear (53) is rotatably arranged on the central shaft (41) and connected with the worm wheel (52) into a whole, the second gear (54) and the third gear (55) are fixedly arranged in the intermediate shaft (51), the second gear (54) is meshed with the first gear (53), and the fourth gear (56) is fixedly arranged on the central shaft (41) and meshed with the third gear (55).
2. The multi-functional travel stop of claim 1, wherein: the shell (1) comprises a base (11) and an upper cover (12), wherein a positioning boss (111) is integrally formed at the four corners of the base (11), a mounting hole is formed in the positioning boss (111), and the base (11) and the upper cover (12) are fixedly connected through a fixing screw (13).
3. The multi-functional travel stop of claim 2, wherein: a sealing gasket (14) is arranged between the base (11) and the upper cover (12).
4. The multi-functional travel stop of claim 1, wherein: the limiting cam mechanism (4) also comprises an adjusting component (43),
the cam assembly (42) comprises an upper baffle (421), a lower baffle (422) and a cam ring (423), the upper baffle (421) and the lower baffle (422) are fixed on a central shaft (41), the cam ring (423) is arranged between the upper baffle (421) and the lower baffle (422) and can rotate relative to the upper baffle (421) and the lower baffle (422), and an inner ring gear (4231) is formed in the inner ring of the cam ring (423);
the adjusting assembly (43) comprises an adjusting shaft (431) and an elastic piece (432), the adjusting shaft (431) is arranged in parallel to the central shaft (41) and penetrates through the upper baffle (421) and the lower baffle (422), a combination tooth (4311) matched with the inner gear ring (4231) is formed on the adjusting shaft (431), the adjusting shaft (431) can slide up and down along the axial direction of the adjusting shaft, the adjusting shaft has a first position which is locked with the upper baffle (421) in a circumferential limiting mode and a second position which is unlocked with the upper baffle (421) and can rotate in the circumferential direction, and the elastic piece (432) can drive the adjusting shaft (431) to be kept at the first position.
5. The multi-functional travel stop of claim 4, wherein: the upper end face of the combination tooth (4311) is provided with end face teeth, the lower end face of the upper baffle (421) is correspondingly provided with limit teeth, and when the adjusting shaft (431) is located at the first position, the end face teeth are meshed with the limit teeth to form circumferential limit matching.
6. The multi-functional travel stop of claim 4, wherein: the elastic piece (432) is a spring, one end of the spring is abutted against the lower baffle (422), and the other end of the spring is abutted against the lower end face of the combination tooth (4311).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121594142.7U CN215287781U (en) | 2021-07-14 | 2021-07-14 | Multifunctional stroke limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121594142.7U CN215287781U (en) | 2021-07-14 | 2021-07-14 | Multifunctional stroke limiter |
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| Publication Number | Publication Date |
|---|---|
| CN215287781U true CN215287781U (en) | 2021-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121594142.7U Active CN215287781U (en) | 2021-07-14 | 2021-07-14 | Multifunctional stroke limiter |
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| Country | Link |
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| CN (1) | CN215287781U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115057352A (en) * | 2022-08-18 | 2022-09-16 | 河南华工实业集团有限公司 | Embedded gear ratio speed governing crane wheel |
-
2021
- 2021-07-14 CN CN202121594142.7U patent/CN215287781U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115057352A (en) * | 2022-08-18 | 2022-09-16 | 河南华工实业集团有限公司 | Embedded gear ratio speed governing crane wheel |
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