CN217355192U

CN217355192U - Output shaft assembly of precise linear actuator

Info

Publication number: CN217355192U
Application number: CN202221328851.5U
Authority: CN
Inventors: 季永生; 夏兆农; 钱靖文
Original assignee: Ningbo United Blue Light Technology Co ltd
Current assignee: Ningbo United Blue Light Technology Co ltd
Priority date: 2022-05-30
Filing date: 2022-05-30
Publication date: 2022-09-02
Anticipated expiration: 2032-05-30

Abstract

The utility model discloses an accurate linear actuator output shaft subassembly relates to the output shaft field, including output shaft, bearing and gear, the output shaft includes first axis body, the second axis body and third axis body, the logical groove of screw thread has all been seted up to the left and right sides of the second axis body, the right-hand member of first axis body is fixed with first thread head, threaded connection between first thread head and the logical groove of screw thread, the bearing cup joints on first axis body, the left end of third axis body is fixed with second thread head, threaded connection between second thread head and the logical groove of screw thread. The utility model discloses an output shaft comprises first axis body, the second shaft body and third axis body, and is connected firmly between first axis body and third axis body and the second shaft body, and convenient to detach separates simultaneously, when first axis body or the second shaft body or third axis body damage, only needs to change the first axis body or the second shaft body or the third axis body of damage, need not to change whole output shaft, the cost is reduced.

Description

Output shaft assembly of precise linear actuator

Technical Field

The utility model relates to an output shaft field, concretely relates to accurate linear actuator output shaft subassembly.

Background

The precise linear actuator is mainly used for processing, processing and production application. It can also replace hydraulic or pneumatic cylinders, bringing greater advantages than the conventional technique. Precision linear actuators have many unique designs that have become popular with hydraulic and pneumatic cylinders, as well as cleaner, simpler, and more energy efficient power transmission capabilities. Meanwhile, the actuator can be more simply integrated into a programmable control system, so that the precision is higher and the noise is less. Precision linear actuators can be used in chemical plants, paper mills, welding operations, and outdoor applications. Precision linear actuators are generally a better choice than hydraulic or pneumatic products, are simpler to install, occupy less space, are easier to control, consume less energy, are more precise, require less maintenance, are cleaner and more environmentally friendly.

At present, an output shaft of an existing precise linear actuator is integrally formed, the whole output shaft needs to be replaced after the output shaft is partially damaged, the cost is increased, and the sealing performance between the output shaft and a bearing is poor.

Therefore, there is a need for a precision linear actuator output shaft assembly that solves the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an accurate linear actuator output shaft subassembly to the output shaft of the accurate linear actuator who provides in solving above-mentioned background art is whole integrated into one piece, needs to change whole output shaft after the output shaft local damage, has increased the cost, and the poor problem of sealing performance between output shaft and the bearing.

In order to achieve the above object, the present invention provides the following technical solutions: the output shaft assembly of the precise linear actuator comprises an output shaft, a bearing and a gear, wherein the bearing is sleeved at the left part of the output shaft, the gear is sleeved at the right part of the output shaft, the output shaft comprises a first shaft body, a second shaft body and a third shaft body, the first shaft body is positioned at the left side of the second shaft body, the third shaft body is positioned at the right side of the second shaft body, threaded through grooves are respectively formed in the left side and the right side of the second shaft body, mounting holes are formed in the inner walls of the threaded through grooves at equal intervals, the mounting holes extend to the outer side wall of the second shaft body, a first threaded head is fixed at the right end of the first shaft body, the first threaded head is in threaded connection with the threaded through grooves, the bearing is sleeved on the first shaft body, a second threaded head is fixed at the left end of the third shaft body, the second threaded head is in threaded connection with the threaded through grooves, and nuts are inlaid in the outer side faces of the first threaded head and the second threaded head at equal intervals, the quantity of nut is the same with the quantity of mounting hole, the inside nested locking bolt that has of mounting hole, threaded connection between the tail end of locking bolt and the nut, the gear cup joints on the third axis body, the ring channel has been seted up with the junction of bearing on the first axis body, the quantity of ring channel is provided with two, has all cup jointed first sealing washer on two ring channels.

Preferably, a channel is formed in the middle of the output shaft, the channel penetrates through the left end and the right end of the output shaft, a first through hole is formed in the middle of the left side of the first shaft body, the first through hole extends to the right end face of the first thread head, a second through hole is formed between the two thread through grooves, a third through hole is formed in the middle of the right side of the third shaft body, the third through hole extends to the left end face of the second thread head, the diameters of the first through hole, the second through hole and the third through hole are the same, the first through hole, the second through hole and the third through hole form the channel, the material required for preparing the output shaft is reduced due to the arrangement of the channel, and meanwhile, the weight of the output shaft is reduced.

Preferably, adopt alloy steel integration forging shaping between first axis body and the first thread head, the whole of second axis body adopts alloy steel forging shaping, adopt alloy steel integration forging shaping between third axis body and the second thread head for first axis body, second axis body and third axis body structural strength are big, and are not fragile.

Preferably, the surfaces of the first shaft body, the second shaft body and the third shaft body are provided with carburized layers, so that the surfaces of the shaft bodies are carburized, higher hardness is obtained, the wear resistance and the fatigue resistance are enhanced, and the service life of the output shaft is prolonged.

Preferably, a second sealing ring is arranged between the first thread head and the inner end wall of the thread through groove, a third sealing ring is arranged at the end face contact position of the first shaft body and the second shaft body, the sealing performance among the first shaft body, the third shaft body and the second shaft body is improved through the second sealing ring and the third sealing ring, and the sealing performance is good.

Preferably, first sealing washer, second sealing washer and third sealing washer all adopt the fluorine to glue the sealing washer, and the fluorine glues the sealing washer and has extreme high-quality sealed function, and has the function of very excellent stretching resistance, and ageing-resistant, wearability is good for first sealing washer, second sealing washer and third sealing washer long service life, and guaranteed this output shaft subassembly's sealing performance.

Preferably, be fixed with on the third axis body and keep off ring and spacing ring, the spacing ring is located the right side that keeps off the ring, the shaft body surface that lies in on the third axis body and keep off between ring and the spacing ring is equidistant to be fixed with the lug, the gear is located and keeps off between ring and the spacing ring, keep off and be provided with the gasket between ring and the spacing ring and the gear, keep off the equidistant slot of having seted up of middle part round hole wall of ring, slot and lug phase-match can increase the frictional force between gear and the third axis body for the gear is stable firm in the installation on the third axis body, the phenomenon of skidding can not appear.

Preferably, keep off ring and lug and third axis body integrated into one piece, the third axis body be provided with the external screw thread with the junction of spacing ring on the surface, the inner wall of spacing ring be provided with external screw thread assorted internal thread, threaded connection between spacing ring and the third axis body for the installation is simple between spacing ring and the third axis body, the dismantlement between the spacing ring of being convenient for simultaneously and the third axis body, the dismantlement of the gear of being convenient for.

In the technical scheme, the utility model provides a technological effect and advantage:

1. the output shaft is composed of a first shaft body, a second shaft body and a third shaft body, the first shaft body, the third shaft body and the second shaft body are connected through threads and fixed through locking bolts, so that the first shaft body, the third shaft body and the second shaft body are firmly connected, and meanwhile, the first shaft body, the third shaft body and the second shaft body are convenient to disassemble and separate;

2. the two annular grooves are formed in the joint of the first shaft body and the bearing, the two annular grooves are respectively sleeved with the first sealing ring, and the first sealing rings are fluorine rubber sealing rings, so that the sealing performance of the bearing and the first shaft body during assembly can be improved;

3. the middle part of the output shaft is provided with the channel which can be used for passing through pipelines, gas or liquid oil, so that the using effect of the output shaft is improved, the material required for preparing the output shaft is reduced due to the arrangement of the channel, and the weight of the output shaft is reduced;

4. through be provided with on the third axis body and keep off the ring, spacing ring and lug, and be provided with at the inner annular wall of gear with lug assorted slot, when the gear assembled on the third axis body, the slot cup joints on the lug, can increase the frictional force between gear and the third axis body, make the gear installation on the third axis body stable firm, the phenomenon of skidding can not appear, and spacing ring and third axis body threaded connection, be convenient for the dismantlement between spacing ring and the third axis body, thereby conveniently dismantle the gear get off.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a perspective view of the present invention;

fig. 3 is a schematic view of a first shaft of the present invention;

fig. 4 is a schematic view of the present invention shown in fig. 3 with the bearing removed;

fig. 5 is a schematic view of fig. 4 with the first seal ring removed in accordance with the present invention;

fig. 6 is a schematic view of a second shaft of the present invention;

fig. 7 is a schematic view of a third shaft according to the present invention;

fig. 8 is an exploded view of the third shaft of the present invention;

fig. 9 is a partial sectional view of the present invention.

Description of the reference numerals:

1 output shaft, 2 bearings, 3 gears, 4 first shaft bodies, 5 second shaft bodies, 6 third shaft bodies, 7 threaded through grooves, 8 first through holes, 9 mounting holes, 10 first threaded heads, 11 second threaded heads, 12 nuts, 13 locking bolts, 14 annular grooves, 15 first sealing rings, 16 channels, 17 second through holes, 18 third through holes, 19 carburized layers, 20 second sealing rings, 21 third sealing rings, 22 baffle rings, 23 limiting rings, 24 convex blocks and 25 slots.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.

The utility model provides a precision linear actuator output shaft assembly as shown in figures 1-7, including output shaft 1, bearing 2 and gear 3, bearing 2 cup joints the left part of output shaft 1, gear 3 cup joints the right part of output shaft 1, output shaft 1 includes first axle body 4, second axle body 5 and third axle body 6, first axle body 4 is located the left side of second axle body 5, third axle body 6 is located the right side of second axle body 5, threaded through groove 7 has all been seted up to the left and right sides of second axle body 5, mounting hole 9 has been seted up to the inner wall of threaded through groove 7 equidistant, mounting hole 9 extends to the lateral wall of second axle body 5, the right-hand member of first axle body 4 is fixed with first thread head 10, threaded connection between first thread head 10 and the threaded through groove 7, bearing 2 cup joints on first axle body 4, the left end of third axis body 6 is fixed with second thread head 11, threaded connection between second thread head 11 and the logical groove 7 of screw thread, the impartial interval of lateral surface of first thread head 10 and second thread head 11 is inlayed and is had nut 12, the quantity of nut 12 is the same with the quantity of mounting hole 9, the inside nestification of mounting hole 9 has locking bolt 13, threaded connection between locking bolt 13's the tail end and the nut 12, gear 3 cup joints on third axis body 6, ring channel 14 has been seted up with the junction of bearing 2 on the first axis body 4, ring channel 14's quantity is provided with two, has all cup jointed first sealing washer 15 on two ring channels 14.

The middle of the output shaft 1 is provided with a channel 16, the channel 16 penetrates through the left end and the right end of the output shaft 1, the middle of the left side of the first shaft body 4 is provided with a first through hole 8, the first through hole 8 extends to the right end face of the first thread head 10, a second through hole 17 is arranged between the two thread through grooves 7, the middle of the right side of the third shaft body 6 is provided with a third through hole 18, the third through hole 18 extends to the left end face of the second thread head 11, the diameters of the first through hole 8, the second through hole 17 and the third through hole 18 are the same, the channel 16 is formed by the first through hole 8, the second through hole 17 and the third through hole 18, the material required for preparing the output shaft 1 is reduced due to the arrangement of the channel 16, and the weight of the output shaft 1 is reduced.

The implementation mode is specifically as follows: the output shaft 1 is composed of a first shaft body 4, a second shaft body 5 and a third shaft body 6, a first thread head 10 on the first shaft body 4 is in threaded connection with a thread through groove 7 on the second shaft body 5, a second thread head 11 on the third shaft body 6 is in threaded connection with the thread through groove 7 on the second shaft body 5, and then sequentially penetrates through a mounting hole 9 on the second shaft body 5 through a bolt and is connected with a corresponding nut 12, so that the first shaft body 4, the third shaft body 6 and the second shaft body 5 are simply and firmly connected, and meanwhile, the disassembly and separation are convenient, when the first shaft body 4 or the second shaft body 5 or the third shaft body 6 is damaged, only the damaged first shaft body 4 or second shaft body 5 or third shaft body 6 needs to be replaced, the whole output shaft 1 does not need to be replaced, the cost is reduced, and a first through hole 8 on the first shaft body 4, a second through hole 17 on the second shaft body 5 and a third through hole 18 on the third shaft body 6 form a channel 16, the setting of passageway 16 can be used for through the pipeline, gas or liquid oil, the result of use of output shaft 1 has been improved, and the setting of passageway 16 has reduced the required material of preparation output shaft 1, output shaft 1's weight has been alleviateed simultaneously, two ring channels 14 have been seted up with bearing 2's junction on the first axis body 4, and all cup jointed first sealing washer 15 on two ring channels 14, can improve the leakproofness when bearing 2 assembles with the first axis body 4, the output shaft that this embodiment has specifically solved the accurate linear actuator that exists among the prior art is whole integrated into one piece, need change whole output shaft after the output shaft local damage, and the cost is increased, and the problem of the sealing performance difference between output shaft and the bearing.

As shown in fig. 4-7, the first shaft 4 and the first screw head 10 are integrally forged and formed by alloy steel, the second shaft 5 is integrally forged and formed by alloy steel, and the third shaft 6 and the second screw head 11 are integrally forged and formed by alloy steel, so that the first shaft 4, the second shaft 5 and the third shaft 6 have high structural strength and are not easily damaged.

Preferably, carburized layers 19 are arranged on the surfaces of the first shaft body 4, the second shaft body 5 and the third shaft body 6, so that the surfaces of the shaft bodies are carburized, higher hardness is obtained, the wear resistance and the fatigue resistance are enhanced, and the service life of the output shaft 1 is prolonged.

A second sealing ring 20 is arranged between the first thread head 10 and the second thread head 11 and the inner end wall of the thread through groove 7, a third sealing ring 21 is arranged at the contact part of the end surfaces of the first shaft body 4 and the second shaft body 5, the third shaft body 6 and the second shaft body 5, the sealing performance among the first shaft body 4, the third shaft body 6 and the second shaft body 5 is improved through the second sealing ring 20 and the third sealing ring 21, and the sealing performance is good.

First sealing washer 15, second sealing washer 20 and third sealing washer 21 all adopt the fluorine rubber sealing washer, and the fluorine rubber sealing washer has extreme high-quality sealed function, and has the function of very excellent stretching resistance, and ageing-resistant, the wearability is good for first sealing washer 15, second sealing washer 20 and third sealing washer 21 long service life, and guaranteed this output shaft subassembly's sealing performance.

The implementation mode is specifically as follows: the second sealing ring 20 is arranged between the first threaded head 10 and the second threaded head 11 and the inner end wall of the threaded through groove 7, the third sealing ring 21 is arranged at the contact part of the first shaft body 4 and the third shaft body 6 with the end surface of the second shaft body 5, the sealing performance between the first shaft body 4 and the second shaft body 5 is effectively ensured, the sealing performance of the output shaft 1 is ensured, the first shaft body 4 and the first threaded head 10 are integrally forged and formed by alloy steel, the second shaft body 5 is integrally forged and formed by alloy steel, the third shaft body 6 and the second threaded head 11 are integrally forged and formed by alloy steel, so that the first shaft body 4, the second shaft body 5 and the third shaft body 6 have high structural strength, are not easy to damage and have long service life, and carburized layers 19 are arranged on the surfaces of the first shaft body 4, the second shaft body 5 and the third shaft body 6 to increase carbon on the surfaces of the shaft bodies, the high-strength precision linear actuator has the advantages that the high hardness is obtained, the wear resistance and the fatigue resistance are enhanced, the service life of the output shaft 1 is prolonged, and the problems that the output shaft of the precision linear actuator in the prior art is low in strength, easy to damage and short in service life are solved.

As shown in fig. 2 and 7-8, a stop ring 22 and a limit ring 23 are fixed on the third shaft body 6, the limit ring 23 is located on the right side of the stop ring 22, bumps 24 are fixed on the surface of the shaft body of the third shaft body 6 between the stop ring 22 and the limit ring 23 at equal intervals, the gear 3 is located between the stop ring 22 and the limit ring 23, spacers are arranged between the stop ring 22 and the limit ring 23 and the gear 3, slots 25 are formed in the middle circular hole wall of the stop ring 22 at equal intervals, and the slots 25 are matched with the bumps 24, so that the friction between the gear 3 and the third shaft body 6 can be increased, the gear 3 is stably and firmly mounted on the third shaft body 6, and no slip phenomenon occurs.

Keep off ring 22 and lug 24 and the integrated shaping of third axis body 6, the third axis body 6 be provided with the external screw thread on the surface with the junction of spacing ring 23, the inner wall of spacing ring 23 be provided with external screw thread assorted internal thread, threaded connection between spacing ring 23 and the third axis body 6 for the installation is simple between spacing ring 23 and the third axis body 6, and the dismantlement between spacing ring 23 of being convenient for and the third axis body 6 of being convenient for simultaneously, the dismantlement of the gear 3 of being convenient for.

The implementation mode is specifically as follows: when the gear 3 is assembled, the limit ring 23 is firstly taken down from the third shaft body 6, then the gear 3 is sleeved on the third shaft body 6, the slot 25 on the inner annular wall of the gear 3 is aligned with the lug 24 on the third shaft body 6, then the gear 3 is moved, the slot 25 on the inner annular wall of the gear 3 is sleeved on the lug 24, the friction force between the gear 3 and the third shaft body 6 can be increased through the lug 24, so that the third shaft body 6 can drive the gear 3 to rotate without slipping, then the limit ring 23 is arranged on the third shaft body 6 in a threaded manner to limit the gear 3, the limit ring 23 and the baffle ring 22 extrude the gear 3, so that the gear 3 is stably and firmly arranged on the third shaft body 6, when the gear 3 needs to be disassembled for replacement, the limit ring 23 is rotated to be separated from the third shaft body 6, then the gear 3 is moved reversely, and the gear 3 can be disassembled from the third shaft body 6, make things convenient for the change and the recovery of gear 3, the gear welded fastening that exists among the prior art specifically has been solved to this embodiment on the output shaft, dismantles the very inconvenient problem of change.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.

Claims

1. Accurate linear actuator output shaft subassembly, including output shaft (1), bearing (2) and gear (3), bearing (2) cup joint the left part at output shaft (1), gear (3) cup joint the right part at output shaft (1), its characterized in that: the output shaft (1) comprises a first shaft body (4), a second shaft body (5) and a third shaft body (6), wherein the first shaft body (4) is positioned on the left side of the second shaft body (5), the third shaft body (6) is positioned on the right side of the second shaft body (5), threaded through grooves (7) are formed in the left side and the right side of the second shaft body (5), mounting holes (9) are formed in the inner wall of each threaded through groove (7) at equal intervals, the mounting holes (9) extend to the outer side wall of the second shaft body (5), a first threaded head (10) is fixed at the right end of the first shaft body (4), the first threaded head (10) is in threaded connection with the threaded through grooves (7), a bearing (2) is sleeved on the first shaft body (4), a second threaded head (11) is fixed at the left end of the third shaft body (6), and the second threaded head (11) is in threaded connection with the threaded through grooves (7), the external side impartial interval of first thread head (10) and second thread head (11) is inlayed and is had nut (12), the quantity of nut (12) is the same with the quantity of mounting hole (9), the inside nestification of mounting hole (9) has locking bolt (13), threaded connection between the tail end of locking bolt (13) and nut (12), gear (3) cup joint on third axis body (6), ring channel (14) have been seted up with the junction of bearing (2) on first axis body (4), the quantity of ring channel (14) is provided with two, has all cup jointed first sealing washer (15) on two ring channel (14).

2. The precision linear actuator output shaft assembly of claim 1, wherein: the middle part of the output shaft (1) is provided with a channel (16), the channel (16) penetrates through the left end and the right end of the output shaft (1), the middle part of the left side of the first shaft body (4) is provided with a first through hole (8), the first through hole (8) extends to the end face of the right side of the first thread head (10), a second through hole (17) is arranged between the two thread through grooves (7), the middle part of the right side of the third shaft body (6) is provided with a third through hole (18), the third through hole (18) extends to the end face of the left side of the second thread head (11), the diameters of the first through hole (8), the second through hole (17) and the third through hole (18) are the same, and the channel (16) is formed by the first through hole (8), the second through hole (17) and the third through hole (18).

3. The precision linear actuator output shaft assembly of claim 1, wherein: adopt alloy steel integration forging forming between first axis body (4) and first thread head (10), the whole of second axis body (5) adopts alloy steel forging forming, adopt alloy steel integration forging forming between third axis body (6) and second thread head (11).

4. The precision linear actuator output shaft assembly of claim 1, wherein: and carburized layers (19) are arranged on the surfaces of the first shaft body (4), the second shaft body (5) and the third shaft body (6).

5. The precision linear actuator output shaft assembly of claim 1, wherein: and a second sealing ring (20) is arranged between the first threaded head (10) and the second threaded head (11) and the inner end wall of the threaded through groove (7), and a third sealing ring (21) is arranged at the contact part of the end surfaces of the first shaft body (4) and the second shaft body (6) and the second shaft body (5).

6. The precision linear actuator output shaft assembly of claim 5, wherein: the first sealing ring (15), the second sealing ring (20) and the third sealing ring (21) are all made of fluorine rubber.

7. The precision linear actuator output shaft assembly of claim 1, wherein: be fixed with on the third axis body (6) and keep off ring (22) and spacing ring (23), spacing ring (23) are located the right side that keeps off ring (22), lie in on the third axis body (6) and keep off the axle body surface equidistant lug (24) that is fixed with between ring (22) and spacing ring (23), gear (3) are located and keep off between ring (22) and spacing ring (23), keep off and be provided with the gasket between ring (22) and spacing ring (23) and gear (3), keep off the equidistant slot (25) of having seted up in the middle part hole wall of ring (22), slot (25) and lug (24) phase-match.

8. The precision linear actuator output shaft assembly of claim 7 wherein: the stop ring (22), the bump (24) and the third shaft body (6) are integrally formed, external threads are arranged at the joint of the surface of the third shaft body (6) and the limiting ring (23), internal threads matched with the external threads are arranged on the inner wall of the limiting ring (23), and the limiting ring (23) is in threaded connection with the third shaft body (6).