TWI803900B - Coupling device - Google Patents

Abstract

A shaft coupling device, which has a shaft seat, the shaft seat has a perforation, and several group grooves are radially opened on the circumferential wall of the shaft seat, and a counterweight is respectively grouped in each group design groove, and a non-return The joints are assembled in the circumferential wall of the shaft seat. A flow channel that can communicate with the perforation is formed inside the non-return joint. A tapered hole is formed in the flow channel. A tapered surface corresponding to the shape of the tapered hole is formed at the tapered hole, and the anti-reverse part is pushed by an elastic part to close the flow channel, and a hollow ring-shaped metal is pierced in the through hole of the shaft seat. Thin ring, the outer diameter of the thin metal ring is smaller than the inner diameter of the perforation, so that a chamber for filling hydraulic oil is formed between the thin metal ring and the ring wall of the perforation.

Description

Coupling device

The invention relates to a power transmission mechanism, in particular to a coupling device.

Press, the coupling is a common power transmission element in the field of mechanism transmission, which is mainly used to connect the shafts of two mechanical devices, so that the connected shafts can transmit torque accurately.

However, when the general coupling rotates with the main shaft at high speed, if its moment of inertia is unbalanced, it is easy to vibrate due to the shift of the center of gravity under the action of centrifugal force, making the overall operation and rotation unstable, and there will be a shaft Excessive loss of energy for torque transmission, shortened life of the shaft, reduced machining accuracy, etc., and it is easier to generate noise due to resonance when rotating with the shaft, and all kinds of derived problems are not conducive to the application of high-speed models. In addition, most of the general couplings use the oblique cone design and then use the screw lock method to fix the external axis. The outer axis can be clamped by uniform force, which will cause the outer axis to be easily damaged and reduce the precision of fit.

In view of this, how to solve the above-mentioned problems is the main problem to be solved by the present invention. Therefore, the inventor of this case adheres to the spirit of keeping improving, and finally has the generation of the present invention after continuous hard thinking and trial work.

The main purpose of the present invention is to provide a coupling device, which has the effect of uniformly and stably clamping the external shaft center, and is beneficial to perform online dynamic balance correction work.

In order to achieve the aforementioned purpose, the present invention provides a coupling device, comprising: A cylindrical shaft seat has a perforation through the two ends of the shaft seat along its axial direction. An oil injection channel and an exhaust channel respectively communicating with the through hole are opened on the peripheral wall of the shaft seat, and on the shaft seat One end protrudes outwards to form several protrusions, and the shaft seat is radially provided with several assembly grooves arranged at equiangular intervals and extending toward the axis center of the shaft seat on the circumferential wall adjacent to each protrusion, and each of the A counterweight is respectively assembled in the assembly groove; a non-return joint is assembled in the oil injection channel, and the non-return joint has a first end facing the through hole and a second end opposite to the first end. end, and a flow channel is formed inside the non-return joint through the first end and the second end, the flow channel is formed with a large diameter hole near the first end, and the flow channel is near the second end A small-diameter hole is formed at the end, and a tapered hole that tapers toward the small-diameter hole is connected between the large-diameter hole and the small-diameter hole. An oblique conical surface corresponding to the shape of the tapered hole is formed at the tapered hole, and an elastic member is sleeved on the end of the non-return member facing the through hole, and the two ends of the elastic member respectively bounce against the The non-return member and the non-return joint are on a side wall facing the through hole; and A socket is in the shape of a hollow ring. The socket has a thin metal ring. The metal thin ring of the socket is passed through the through hole. The outer diameter of the metal thin ring is smaller than the inner diameter of the through hole. A chamber for filling hydraulic oil is formed between the metal thin ring and the ring wall of the perforation.

Preferably, the ratio of the depth of each set of grooves to the thickness of the peripheral wall is between 0.85 and 0.95.

Preferably, the inner peripheral walls of each set of grooves are respectively provided with an internal thread section, and the outer peripheral edge of each of the counterweights is provided with an external thread section corresponding to the internal thread section, and each of the counterweights is screwed The assembly is arranged in the corresponding assembly groove, and an embedding groove is recessed on the end face of each counterweight facing the peripheral wall. Furthermore, the openings of the respective assembly grooves are respectively provided with a cover which is tangent to the peripheral wall, so as to seal the counterweight in the corresponding assembly grooves.

Preferably, a cover that is tangent to the circumferential wall is assembled at the outward opening of the oil injection channel to close the oil injection channel and the non-return joint.

Preferably, the non-return joint is used to connect with a grease nozzle, and the grease nozzle has an oil injection port connected with the non-return joint, and an adapter is provided in the oil injection port, and the adapter has a The base fixed in the oil filling port, the connecting piece forms a channel in the form of a hollow ring, and the base protrudes from the side facing the non-return joint with several claws, each of which surrounds the channel And they are arranged at intervals with a gap, and when the oil injection nipple is relatively sleeved on the non-return joint with its oil injection port, the claw blocks will be relatively clamped on the outer circumference of the non-return joint.

Preferably, one end of the through hole expands to form a positioning groove, and one end of the sleeve has a positioning ring for correspondingly inserting into the positioning groove and fixing, and the positioning ring extends toward the through hole of the shaft seat to form a There is the thin metal ring, and the thin metal ring is used for the positioning of the ring beam, an external shaft center inserted from the outside, and a spiral groove is recessed on the inner wall of the thin metal ring.

The above objects and advantages of the present invention can be easily understood from the detailed description of the following selected embodiments and the accompanying drawings.

11: shaft seat

12: Perforation

121: positioning slot

13: Circumferential wall

14: Oil injection channel

141: capping

15: exhaust channel

151: seal

152: arrival part

16: convex part

17: Assembly slot

171: internal thread segment

18: Counterweight

181: slotting

182: external thread segment

19: cover body

D: opening depth

L: wall thickness

21: Check connector

211: side wall

22: first end

23: Second end

24: Runner

25: large diameter hole

26: small diameter hole

27: tapered hole

28: Backstop

281: oblique cone

29: Elastic parts

31: Socket

32: positioning ring

33: metal thin ring

331: spiral groove

34: Containment room

41:Grease nozzle

42: Oil filling port

43: Connector

431: base

44: channel

432: claw block

51: Connector

Figure 1 is an exploded view of the present invention.

Fig. 2 is an axial sectional view of the present invention.

Fig. 3 is a schematic axial cross-sectional view of the present invention when the fuel injector is assembled.

Figure 4 is a schematic structural view of the fuel injector of the present invention.

Figure 5 is a schematic diagram of the use state when the fuel injector is assembled according to the present invention (1).

Figure 6 is a schematic diagram of the use state when the fuel injector is assembled according to the present invention (2).

Fig. 7 is a schematic diagram of the structure of the present invention when the oil injection channel is assembled with a cover.

First of all, please refer to Figures 1 and 2, the coupling device provided by the present invention is mainly composed of a shaft seat 11, a non-reverse joint 21 and a socket 31, wherein:

The shaft seat 11 is in the shape of a hollow cylinder. The shaft seat 11 has a through hole 12 extending through the two ends of the shaft seat 11 along its axial direction at its axial center, and a positioning groove 121 is formed by expanding outward at one end of the through hole 12, and The circumferential wall 13 of the shaft seat 11 is provided with an oil injection passage 14 and an exhaust passage 15 respectively communicating with the through hole 12, and a plurality of protrusions 16 are formed on one end of the shaft seat 11. The shaft seat 11 is adjacent to The circumferential wall 13 of each protrusion 16 is radially provided with 8 to 12 grouping grooves 17 arranged at equiangular intervals and respectively extending toward the axis of the shaft seat 11, and the grouping grooves 17 are respectively grouped. A counterweight 18 is provided. In this embodiment, 12 assembly grooves 17 arranged at equal angles (that is, 30 degrees) are opened on the circumferential wall 13 of the shaft seat 11. Preferably, the depth D of the assembly grooves 17 is The ratio to the wall thickness L of the peripheral wall 13 is between 0.85 and 0.95, and an internal thread segment 171 is respectively provided on the inner peripheral wall of each set of grooves 17, each of the counterweights 18 is made of plastic material, and each of the The counterweights 18 are respectively recessed on the end faces towards the circumferential wall 13 with a slot 181 for locking tools (such as screwdrivers or wrenches) to be clamped and assembled. The external thread section 182 corresponding to the internal thread section 171, the counterweights 18 are screwed and assembled in the assembly groove 17 through the opening ends of the corresponding assembly grooves 17, and the counterweights 18 are screwed through the lock. The screw connection position of each counterweight 18 can be adjusted, and a cover body 19 which is tangent to the circumferential wall 13 is respectively set at the opening of each set of grooves 17, so that the counterweight 18 is enclosed in the corresponding Corresponding groups are set in the grooves 17 , and further, the weight of the counterweight 18 is greater than the weight of the cover 19 .

The non-return joint 21 is assembled in the oil injection channel 14, the non-return joint 21 has a first end 22 facing the through hole 12, and a second end 23 opposite to the first end 22, and is located at the The inside of the non-return joint 21 is formed with a flow passage 24 passing through the first end 22 and the second end 23. The flow passage 24 is formed with a large diameter hole 25 near the first end 22. The flow passage 24 is near the first end 22. A small-diameter hole 26 is formed at the second end 23, a tapered hole 27 tapered toward the small-diameter hole 26 is connected between the large-diameter hole 25 and the small-diameter hole 26, and a non-reverse member 28 Perforated in the flow channel 24, the anti-reverse member 28 is formed with an oblique tapered surface 281 corresponding to the shape of the tapered hole 27 opposite to the tapered hole 27, and the anti-reverse member 28 faces the through hole An elastic member 29 is sheathed on one end of 12 , and the two ends of the elastic member 29 bounce against the non-reverse member 28 and the side wall 211 of the non-reverse joint 21 facing the through hole 12 respectively. As shown in Figures 3 and 4, the non-return joint 21 is used to connect with an external oil injection nozzle 41, so that hydraulic oil can be injected into the interior of the shaft seat 11 through the non-return joint 21, wherein the injection The oil nozzle 41 has an oil filling port 42 connected with the non-return joint 21, and an engaging piece 43 is provided in the oil filling opening 42, and the connecting piece 43 has a base 431 for being fixedly connected in the oil filling port 42 , the connecting member 43 is formed in a hollow annular ring, and a channel 44 is formed, and the base 431 protrudes from the side facing the non-return joint 21 with several claw pieces 432 , and each claw piece 432 surrounds the channel 44 and is close to each other. There is a gap between them, and through these gaps, the claw blocks 432 can be slightly opened and closed after being stressed, and the oil nozzle 41 is relatively sleeved on the non-return joint 21 with its oil injection port 42 At this time, the claw blocks 432 will be slightly expanded by being pushed by the outer circumference of the non-return joint 21, and firmly clamped on the non-return joint 21 through the elastic recovery force of each claw block 432 itself, so that , that is, it is not necessary to lock and assemble the grease nozzle 41 in a twist-lock manner, so that the assembly work of the grease nozzle 41 can be simpler and faster.

The sleeve 31 is in the shape of a hollow ring. One end of the sleeve 31 has a positioning ring 32 for correspondingly inserting into the positioning groove 121 and fixing it. Thin metal ring 33, this thin metal ring 33 is used for positioning an external axis (not shown) inserted from the outside for the ring beam, this thin metal ring 33 can shrink inward slightly after being compressed, and the metal The outer diameter of the thin ring 33 is slightly smaller than the perforation 12, so that a chamber 34 for filling hydraulic oil is formed between the thin metal ring 33 and the ring wall of the perforation 12. In this embodiment, the position where the sleeve 31 meets the shaft seat 11 is fixed and sealed by welding.

In addition, as shown in Figure 1, the coupling device provided by the present invention has two shaft seats 11 respectively combined with the outer shaft centers when in use, and a connecting piece 51 is clamped between the two shaft seats 11 , so as to connect different external axes for coaxial transmission.

And as shown in Figures 5 and 6, when the coupling device provided by the present invention is in use, the user only needs to directly socket the oil injection port 42 of the oil injection nozzle 41 on the non-return joint 21, and then use an oil injection machine (in the figure (not shown) When hydraulic oil is supplied to the oil injection nozzle 41, the hydraulic oil will push away the non-return member 28 in the flow channel 24, so that a space for the hydraulic oil to flow is formed between the inclined tapered surface 281 and the tapered hole 27 , and the hydraulic oil flows from here through the large-diameter hole 25 and the oil injection channel 14 and is injected into the chamber 34, and, in the process of continuously injecting hydraulic oil into the chamber 34, a certain pressure will be generated in the chamber 34, And because the hydraulic oil system surrounds the thin metal ring 33 in the chamber 34, the pressure will be evenly applied to the outer circumference of the thin metal ring 33, and the thin metal ring 33 will be deformed slightly inward, and then the thin metal ring 33 will be slightly retracted, so that the thin metal ring 33 that passes through The outer shaft center in the thin metal ring 33 can be fixed by the thin metal ring 33 that shrinks inwardly, and because the hydraulic oil system uniformly applies force to the thin metal ring 33, it is also made to be clamped by the thin metal ring 33. The outer axis produces a stable clamping effect with uniform force. In addition, as shown in FIG. 6, one end of the exhaust channel 15 communicates with the chamber 34, and the other end communicates with the outside. The exhaust channel 15 is used to discharge hydraulic oil when the chamber 34 is injected. The air in the chamber 34, and when the air in the chamber 34 is exhausted, the exhaust passage 15 is provided with a seal 151 that seals the chamber 34 at the end that communicates with the outside, and an abutment is provided between the exhaust passage 15 and the seal 151. 152 , and the resisting member 152 is pressed by the sealing member 151 to position and seal the exhaust channel 15 , so that the exhaust channel 15 is completely sealed.

Next, as shown in Figure 7, when the pressure of the hydraulic oil in the chamber 34 reaches a certain level, the non-return member 28 is pushed back through the elastic force of the elastic member 29 at the large-diameter hole 25, so that the non-return The inclined cone surface 281 of the member 28 is pressed against the wall of the tapered hole 27 again. At this time, the oil injection nozzle can be removed, and a valve corresponding to the circumferential wall 13 is assembled at the outward opening of the oil injection passage 14. The trimmed cover 141 is used to close the oil injection channel 14 and the non-return joint 21, so as to avoid the problem of wind shear when the shaft seat 11 is rotated due to the exposure of the non-return joint 21.

And further matching is shown in Figure 2, the inner wall of the thin metal ring 33 is concavely provided with a spiral groove 331 extending axially, and when the thin metal ring 33 shrinks inwardly in the radial direction, the spiral groove 331 331 can make the thin metal ring 33 move toward the radial axis on average when the oil pressure is activated and deformed by force, so that the inner wall of the thin metal ring 33 is evenly clamped on the outer axis to ensure that the outer axis will not be worn Or damaged to affect the precision of fit.

In addition, the coupling device of the present invention is further equipped with counterweights 18 in the assembly grooves 17 of the shaft seat 11. Therefore, after the user performs spectrum analysis through the dynamic balance measuring instrument, he only needs to use the twist lock Adjusting the screw connection position of each counterweight 18 can be used to change the moment of inertia of the shaft seat 11, and individual adjustments can be made in response to various situations, thereby realizing the correction of dynamic balance, and adjusting each counterweight At 18 o'clock, it can be used to apply sealant to locate the adjusted position of each counterweight 18, so that the dynamic balance correction work can be simpler and faster, and it is beneficial to install the coupling device provided by the present invention in the working position Carry out the correction work of dynamic balance on the line after; Moreover, the present invention is provided with a cover body 19 that is tangent to the circumferential wall 13 respectively at the opening of each group of grooves 17, which can effectively avoid the problems provided by the present invention. The wind shear problem occurs when the shaft coupling device rotates, and the setting of the weight of the counterweight 18 is greater than the weight of the cover 19 can ensure the stability of its rotation.

However, the disclosures of the above embodiments are only used to illustrate the present invention, not to limit the present invention, so any changes in numerical values or replacement of equivalent elements should still fall within the scope of the present invention.

To sum up, when it can make those who are familiar with this technology understand that the present invention can clearly achieve the above-mentioned purpose, it actually complies with the provisions of the Patent Law, so the application is filed according to the law.

11: shaft seat

12: Perforation

121: positioning slot

13: Circumferential wall

14: Oil injection channel

15: exhaust channel

16: convex part

17: Assembly slot

18: Counterweight

181: slotting

19: cover body

21: Check connector

31: Socket

32: positioning ring

33: metal thin ring

331: spiral groove

51: Connector

Claims (6)

A shaft coupling device, comprising: a hollow cylindrical shaft seat, with a through hole penetrating both ends of the shaft seat along its axial direction, and an oil injection channel respectively communicating with the through hole and a Exhaust channel, and several protrusions are formed on one end of the shaft seat. On the circumferential wall adjacent to each protrusion, the shaft seat is radially opened with several shafts arranged at equiangular intervals and facing the shaft seat respectively. An assembly groove extending from the center, and a counterweight is respectively assembled in each assembly groove; a non-return joint is assembled in the oil injection channel, and the non-return joint has a first end facing the through hole, and A second end opposite to the first end, and a flow channel passing through the first end and the second end is formed inside the non-return joint, and a large diameter is formed near the first end of the flow channel A small-diameter hole is formed near the second end of the flow channel, a tapered hole that tapers toward the small-diameter hole is connected between the large-diameter hole and the small-diameter hole, and a non-reverse member is passed through In the flow channel, the non-return member is formed with an oblique tapered surface corresponding to the shape of the tapered hole opposite to the tapered hole, and an elastic member is sleeved on the end of the non-return member facing the through hole. The two ends of the elastic member respectively spring against the side wall of the non-return member and the non-return joint facing the through hole. The non-return joint is used for connecting with a grease nozzle. connected to the oil filling port, and a connecting piece is provided in the oil filling port. The connecting piece has a base for being fixed in the oil filling port. The connecting piece forms a channel in a hollow ring shape, and the base There are several claws protruding toward one side of the non-return joint, and the claws surround the channel and are arranged at intervals with a gap between them, and the oil nozzle When the oil filling port is relatively sleeved on the non-return joint, the claw blocks will be relatively clamped on the outer circumference of the non-return joint; and a sleeve is in a hollow ring shape, and the sleeve has a metal thin Ring, the socket is set in the through hole with its thin metal ring, the outer diameter of the thin metal ring is smaller than the inner diameter of the through hole, so that a hole for filling hydraulic oil is formed between the thin metal ring and the through hole Containment room. The coupling device according to claim 1, wherein the ratio of the depth of each set of grooves to the thickness of the circumferential wall is between 0.85 and 0.95. The coupling device as described in Claim 1, wherein, the inner peripheral walls of each grouping groove are respectively provided with an internal thread segment, and the outer peripheral edge of each counterweight is provided with an external thread corresponding to the internal thread segment Each of the counterweights is screwed and assembled in the corresponding assembly groove, and a slot is respectively recessed on the end surface of each of the counterweights facing the circumferential wall. The coupling device as described in claim 3, wherein, the openings of the grooves of each assembly are respectively provided with a cover body which is tangent to the circumferential wall, so as to seal the counterweight in the corresponding assembly. in the slot. The coupling device according to claim 1, wherein a cover tangent to the circumferential wall is assembled at the outward opening of the oil injection channel to close the oil injection channel and the non-return joint. The shaft coupling device as described in claim 1, wherein one end of the through hole is expanded outward to form a positioning groove, and one end of the sleeve has a positioning ring for correspondingly inserting into the positioning groove and fixing, the positioning The thin metal ring is formed by extending the ring towards the through hole of the shaft seat, and the thin metal ring is used for positioning the ring beam to an external shaft center inserted from the outside, and a spiral groove is recessed on the inner wall of the thin metal ring .

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