CN218468213U

CN218468213U - Speed reducer capable of preventing foreign matters from entering box body

Info

Publication number: CN218468213U
Application number: CN202222788850.5U
Authority: CN
Inventors: 陈秀新; 陈秀益
Original assignee: Wenzhou Jiajie Transmission Machinery Co ltd
Current assignee: Wenzhou Jiajie Transmission Machinery Co ltd
Priority date: 2022-10-21
Filing date: 2022-10-21
Publication date: 2023-02-10
Anticipated expiration: 2032-10-21

Abstract

The utility model relates to a can prevent that foreign matter from getting into speed reducer of box, input shaft and output shaft including the box and installing in the box, be equipped with gear drive assembly between input shaft and the output shaft, set up the input opening that supplies input shaft one end to wear out on the box and still integrated into one piece has the end that stretches out that supplies output shaft to wear out, be equipped with the first sealing washer of contradicting between box and input shaft in the input opening, one side that stretches out the end and be close to the box is equipped with the second sealing washer of contradicting on the output shaft, it has the output flange to stretch out end opposite side fixedly connected with, fixedly connected with cover establishes the shield between output shaft and output flange on the output flange, the lateral wall of shield is contradicted sealedly and serve the third sealing washer near one of stretching out the end with the inside wall of output flange, the third sealing washer is contradicted and is sealed between shield and output shaft, be equipped with the electrostatic absorption mechanism on the inside wall middle part of shield, this structure provides a multiple protection's seal structure and promotes sealing performance.

Description

Speed reducer capable of preventing foreign matters from entering box body

Technical Field

The utility model relates to a speed reducer technical field, especially a can prevent that foreign matter from getting into speed reducer of box.

Background

The speed reducer is mainly used for matching rotating speed and transmitting torque between a prime motor and a working machine or an actuating mechanism, is widely applied to modern machinery, but most of speed reducers are usually installed in places with poor environmental conditions, and the part of the output end of the speed reducer, which is exposed out of a box body, is easy to contact with a lot of dust and foreign matters in work, so that the dust and foreign matters are easily brought into the box body when the output end rotates, but the matching relationship of the internal structure of the speed reducer is more precise, and once the foreign matters enter, the fault of the speed reducer or the damage and the service life of parts are easily shortened.

Traditional speed reducer will be provided with the sealing washer between output shaft and box, seals through the gap of sealing washer between to output shaft and the box, but only seals through the sealing washer, and the mode is more single, and sealing performance is comparatively general, and in addition appear in the in-service work for example the damaged or improper condition of operating personnel installation of sealing washer, will make the speed reducer have the foreign matter to get into inside with difficulty at the during operation.

SUMMERY OF THE UTILITY MODEL

The utility model provides a can prevent that foreign matter from getting into speed reducer of box, it has improved through being provided with first sealing washer, second sealing washer, third sealing washer, shield and being located the electrostatic absorption mechanism on the shield inside wall the utility model discloses a sealing performance can prevent effectively that the foreign matter from getting into inside the box, has solved the above-mentioned problem that exists among the prior art in the use.

The technical scheme of the utility model is realized like this: the utility model provides a can prevent that foreign matter from getting into speed reducer of box, includes the box and installs input shaft and the output shaft in the box, be equipped with gear drive assembly between input shaft and the output shaft, set up the input opening that supplies input shaft one end to wear out on the box, be equipped with the first sealing washer of contradicting between box and input shaft in the input opening, still integrated into one piece has the end that stretches out that supplies output shaft to wear out on the box, stretch out to be equipped with in the end and contradict in the epaxial second sealing washer of output, the second sealing washer is located the one side that stretches out the end and is close to the box, stretch out the end and keep away from one of box and serve fixedly connected with output flange, fixedly connected with shield on the output flange, the shield cover is established between output shaft and output flange, the lateral wall of shield is contradicted sealedly with output flange's, the shield is provided with the third sealing washer in one of stretching out the end, the third sealing washer is contradicted and is sealed between shield and output shaft, be equipped with electrostatic absorption mechanism on shield's the inside wall middle part.

By adopting the technical scheme, when foreign matters contact the output shaft, at first the shield can keep off the foreign matters outside the box as a first layer of barrier, if some small foreign matters enter the shield, the electrostatic adsorption mechanism can adsorb the small foreign matters to prevent the small foreign matters from entering the box, meanwhile, the third sealing ring is in conflict sealing between the shield and the output shaft, the foreign matters can be prevented from entering the box after escaping from the electrostatic adsorption plate to further enhance the sealing performance, the second sealing ring is sealed with the first sealing ring matched with the box, the leakage of lubricating oil inside the speed reducer box and the external foreign matters can be prevented from entering the box, in the structure, the second sealing ring, the third sealing ring and the electrostatic adsorption mechanism on the inner side wall of the shield can form four layers of barriers for preventing the foreign matters from entering the box at the extending end, and better sealing effect can be provided compared with the traditional speed reducer, thereby further preventing the foreign matters from entering the box to damage parts inside the speed reducer, and meanwhile, the design of the output flange can facilitate operators to replace and dismantle the shield, the parts such as the electrostatic adsorption mechanism and the like at the position of the output end.

The utility model discloses further set up to: the electrostatic adsorption mechanism is including being annular electrostatic adsorption board, set up the annular holding tank that is used for placing electrostatic adsorption board on the inside wall of shield, equal fixedly connected with rubber pad on the both ends of electrostatic adsorption board, the rubber pad cooperation is installed in the annular holding tank, set up the chamber that holds of opening towards third sealing washer in the shield, it is equipped with the power supply ware of being connected with the electrostatic adsorption board electricity to hold the intracavity.

Through adopting above-mentioned technical scheme, the power supply ware is holding the intracavity and connecting electrostatic adsorption board and making it produce static for the power supply of electrostatic adsorption board, thereby make it produce the adsorption affinity to the foreign matter, and the annular design of electrostatic adsorption board can make the electrostatic adsorption board produce even adsorption affinity to the working space that it located, and the rubber pad can play insulating effect when the electrostatic adsorption board switches on, the opening design that holds the chamber can make things convenient for operating personnel to change dismantlement power supply ware or charge to the power supply ware, operating personnel can take off the third sealing washer after pulling down the shield and just can directly operate the power supply ware.

The utility model discloses further set up to: and a magnetic adsorption mechanism is fixedly arranged in the extending end, is positioned between the second sealing ring and the dust cover and is sleeved outside the output shaft in a clearance manner.

Through adopting above-mentioned technical scheme, in case there is the metallic foreign matter of iron system or other metallic foreign matters that can be attracted by magnet break through inside the third sealing washer gets into the input, magnetic adsorption mechanism can adsorb it, prevents that it from getting into the box.

The utility model discloses further set up to: the magnetic adsorption mechanism comprises an annular magnet, an annular groove is formed in the inner side wall of the extending end, and the annular magnet is installed in the annular groove in a matched mode.

Through adopting above-mentioned technical scheme, because the space between output and the output shaft is the annular cross section, consequently can form even adsorption affinity to this space with magnet design annular and install in the annular groove that stretches out on the end inside wall to better produce the adsorption effect to the foreign matter.

The utility model discloses further set up to: the annular magnet is composed of at least three magnet segments, and a fixing mechanism for fixing the magnet segments into an annular shape is arranged in the extending end.

Through adopting above-mentioned technical scheme, the design of magnet section can make annular magnet's installation dismantle and become more convenient, and fixed establishment can further strengthen annular magnet's structural stability, prevents that the magnet section from dropping and damaging other structures.

The utility model discloses further set up to: the fixing mechanism comprises a front fixing hoop and a rear fixing hoop, the front fixing hoop is pressed on one side of the annular magnet, the rear fixing hoop is pressed on the other side of the annular magnet, and the front fixing hoop and the rear fixing hoop are fixed through bolts.

Through adopting above-mentioned technical scheme, when operating personnel fixes the magnet section, only need through the bolt with preceding fixed hoop and back fixed hoop fix in ring magnet's both sides can.

The utility model discloses further set up to: the output shaft is provided with two and is located the both sides of input shaft respectively, gear drive assembly is including the pinion of fixed connection on the input shaft and the gear wheel of fixed connection on the output shaft, the pinion meshes with the gear wheel mutually.

By adopting the technical scheme, when the speed reducer works, the input shaft drives the pinion to rotate, when the pinion rotates, the gearwheel can synchronously rotate with the pinion due to meshing with the pinion, when the gearwheel rotates, the output shaft synchronously rotates with the gearwheel and forms a speed reduction effect through a rotation speed ratio between the gearwheel and the pinion, and the two output shafts are designed into two output shafts, so that the speed reducer can simultaneously drive the two executing mechanisms to work.

The utility model discloses further set up to: the end, far away from the extending end, of the dustproof cover is provided with a limiting step protruding outwards, the end face, far away from the extending end, of the output flange is abutted against the limiting step, and the electrostatic adsorption mechanism is located between the limiting step and the third sealing ring.

Through adopting above-mentioned technical scheme, can prevent the shield displacement, avoid the shield to change the operating position of other spare parts to maintain the normal work of speed reducer.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive labor.

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

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

FIG. 3 isbase:Sub>A schematic sectional view taken along the line A-A in FIG. 2;

FIG. 4 is a schematic cross-sectional view taken along the line B-B in FIG. 2;

FIG. 5 is an enlarged partial view of FIG. 4 at A;

FIG. 6 is an enlarged partial view of the portion B in FIG. 4;

fig. 7 is a front view of the ring magnet of the present invention in combination with a fixing mechanism.

The reference numbers in the figures: the device comprises a box body 1, an input shaft 2, a pinion 21, an output shaft 3, a gearwheel 31, an input opening 4, a protruding end 5, an annular groove 51, an annular magnet 52, a magnet section 53, a front fixing hoop 54, a rear fixing hoop 55, a bolt 56, a first sealing ring 6, a second sealing ring 7, a third sealing ring 8, an output flange 9, a dust cover 10, a limiting step 101, an electrostatic adsorption plate 102, an annular accommodating groove 103, a rubber pad 104, an accommodating cavity 105 and a power supply 106.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying fig. 1-7 in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example (b):

as shown in fig. 1 to 7, the present invention discloses a speed reducer capable of preventing foreign matters from entering a box, the speed reducer comprises a box 1, an input shaft 2 and an output shaft 3 installed in the box 1, wherein a gear transmission assembly is arranged between the input shaft 2 and the output shaft 3, the gear transmission assembly is used for adjusting the rotation speed ratio between the input shaft 2 and the output shaft 3 to form a speed reduction effect, an input opening 4 for one end of the input shaft 2 to penetrate out is arranged on the box 1, a first sealing ring 6 abutting against the box 1 and the input shaft 2 is arranged in the input opening 4, the first sealing ring 6 can prevent lubricating oil in the box 1 from leaking out from the input opening 4, an extension end 5 for the output shaft 3 to penetrate out is further integrally formed on the box 1, a second sealing ring 7 abutting against the output shaft 3 is arranged in the extension end 5, the second sealing ring 7 can prevent lubricating oil in the box 1 from leaking out from the output end, meanwhile, the first sealing ring 6 and the second sealing ring 7 can be matched with the box body 1 to isolate the space inside the box body 1 from the space outside the box body 1 so as to prevent foreign matters outside the box body 1 from entering the box body 1, in addition, the second sealing ring 7 is positioned on one side of the extending end 5 close to the box body 1, an output flange 9 is fixedly connected on one end of the extending end 5 far away from the box body 1, a dustproof cover 10 is fixedly connected on the output flange 9, the dustproof cover 10 is sleeved between the output shaft 3 and the output flange 9, the outer side wall of the dustproof cover 10 is in abutting seal with the inner side wall of the output flange 9, when the foreign matters contact the output shaft 3, the dustproof cover 10 is firstly used as a first layer of barrier to block the foreign matters outside the box body 1, a third sealing ring 8 is arranged on one end of the dustproof cover 10 close to the extending end 5, and the third sealing ring 8 is in abutting seal between the dustproof cover 10 and the output shaft 3, be equipped with electrostatic absorption mechanism on the inside wall middle part of shield 10, if some tiny foreign matters get into shield 10 then electrostatic absorption mechanism can adsorb earlier to these small foreign matters and prevent that it from getting into box 1, the sealed entering box 1 that can prevent the foreign matters after fleing from electrostatic absorption board 102 of third sealing washer 8 conflict between shield 10 and output shaft 3 simultaneously, in this structure, second sealing washer 7, third sealing washer 8, electrostatic absorption mechanism on shield 10 and the shield 10 inside wall can form the four layers and prevent that the foreign matters from getting into box 1's protective screen at the end of stretching out 5 formation, compare in traditional speed reducer and can provide better sealed effect, thereby further prevent that the foreign matters from getting into box 1 and destroying the inside spare part of speed reducer, simultaneously output flange 9's design can make things convenient for operating personnel to change in the position of output and dismantle shield 10, spare parts such as electrostatic absorption mechanism.

The specific structure of the electrostatic adsorption mechanism can be as follows: the electrostatic adsorption mechanism is including being annular electrostatic adsorption board 102, it is mainly in order to make electrostatic adsorption board 102 produce even adsorption affinity to its workspace of locating to design electrostatic adsorption board 102 annular, and offer the annular holding tank 103 that is used for placing electrostatic adsorption board 102 on the inside wall of shield 10, equal fixedly connected with rubber pad 104 on the both ends of electrostatic adsorption board 102, rubber pad 104 cooperation is installed in annular holding tank 103, the chamber 105 that holds of opening towards third sealing washer 8 has been seted up in shield 10, hold and be equipped with the power supply ware 106 of being connected with electrostatic adsorption board 102 electricity in the chamber 105, the theory of operation of this structure is: power supply 106 holds chamber 105 in-connection electrostatic absorption board 102 and for electrostatic absorption board 102 power supply make it produce static to make it produce adsorption affinity to the foreign matter, and rubber pad 104 can play insulating effect when electrostatic absorption board 102 circular telegram and prevent that electrostatic absorption board 102 from electrically conducting to the speed reducer, hold the open design of chamber 105 simultaneously and can make things convenient for operating personnel to change dismantlement power supply 106 or charge power supply 106, operating personnel can take off third sealing washer 8 after dismantling shield 10 and just can directly operate power supply 106.

The magnetic adsorption mechanism is fixedly installed in the extension end 5, the magnetic adsorption mechanism is located between the second sealing ring 7 and the dust cover 10, the magnetic adsorption mechanism is sleeved outside the output shaft 3 in a clearance mode, and in case that metal foreign bodies made of iron or other metal foreign bodies capable of being attracted by magnets break through the third sealing ring 8 and enter the input end, the magnetic adsorption mechanism can adsorb the metal foreign bodies and prevent the metal foreign bodies from entering the box body 1.

The magnetic adsorption mechanism can be specifically structured as follows: magnetic adsorption mechanism has seted up annular groove 51 including annular magnet 52 on stretching out the inside wall of end 5, and annular magnet 52 cooperation is installed in annular groove 51, should encircle the magnet design annular mainly because the space between output and the output shaft 3 is annular cross section, and annular magnet 52's shape then just in time can form more even adsorption affinity in this space to better produce the adsorption effect to metallic foreign matter.

In this embodiment, ring magnet 52 comprises four magnet sections 53 as shown in fig. 7, be equipped with in the end 5 that stretches out and be used for being annular fixed establishment with magnet section 53, operating personnel can put into magnet section 53 one by one in the annular groove 51 and enclose into an annular then fix ring magnet 52 through fixed establishment can when the installation, this structure can make ring magnet 52's installation dismantlement become more convenient, and fixed establishment's design can further strengthen ring magnet 52's structural stability and can prevent that magnet section 53 from dropping and damaging other structures.

The specific structure of the fixing mechanism can be as follows: the fixing mechanism comprises a front fixing hoop 54 and a rear fixing hoop 55, the front fixing hoop 54 is pressed on one side of the annular magnet 52, the rear fixing hoop 55 is pressed on the other side of the annular magnet 52, the front fixing hoop 54 and the rear fixing hoop 55 are fixed through a bolt 56, and when an operator fixes the magnet section 53, the front fixing hoop 54 and the rear fixing hoop 55 only need to be fixed on two sides of the annular magnet 52 through the bolt 56.

Meanwhile, two output shafts 3 in the speed reducer are arranged and are respectively positioned on two sides of the input shaft 2, the structure can enable the speed reducer to simultaneously drive two actuating mechanisms to work, the gear transmission assembly specifically comprises a small gear 21 fixedly connected to the input shaft 2 and a large gear 31 fixedly connected to the output shaft 3, the small gear 21 is meshed with the large gear 31, when the speed reducer works, the input shaft 2 drives the small gear 21 to rotate, when the small gear 21 rotates, the large gear 31 can synchronously rotate with the small gear 21 due to meshing with the small gear 21, and when the large gear 31 rotates, the output shaft 3 synchronously rotates with the large gear and forms a speed reduction effect through a rotating speed ratio between the large gear 31 and the small gear 21.

The end, far away from the extending end 5, of the dustproof cover 10 is provided with a limiting step 101 protruding outwards, the end face, far away from the extending end 5, of the output flange 9 is abutted to the limiting step 101, the electrostatic adsorption mechanism is located between the limiting step 101 and the third sealing ring 8, the dustproof cover 10 can be prevented from being displaced due to the design of the limiting step 101, the dustproof cover 10 is prevented from changing the working positions of other parts, and therefore normal work of the speed reducer is maintained.

The utility model that should point out simultaneously indicates the terminology, like: the references to "front", "rear", "vertical", "horizontal", etc. indicate orientations or positional relationships based on the orientation or positional relationship shown in the drawings, which are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the invention.

The above description is only for the preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a can prevent speed reducer of foreign matter entering box, includes box (1) and installs input shaft (2) and output shaft (3) in box (1), its characterized in that: a gear transmission component is arranged between the input shaft (2) and the output shaft (3), an input opening (4) for one end of the input shaft (2) to penetrate out is arranged on the box body (1), a first sealing ring (6) which is abutted between the box body (1) and the input shaft (2) is arranged in the input opening (4), an extension end (5) for the output shaft (3) to penetrate out is also integrally formed on the box body (1), a second sealing ring (7) which is propped against the output shaft (3) is arranged in the extension end (5), the second sealing ring (7) is positioned on one side of the extending end (5) close to the box body (1), an output flange (9) is fixedly connected to one end of the extending end (5) far away from the box body (1), the output flange (9) is fixedly connected with a dustproof cover (10), the dust cover (10) is sleeved between the output shaft (3) and the output flange (9), the outer side wall of the dustproof cover (10) is in interference sealing with the inner side wall of the output flange (9), a third sealing ring (8) is arranged at one end of the dustproof cover (10) close to the extending end (5), the third sealing ring (8) is abutted and sealed between the dust cover (10) and the output shaft (3), and an electrostatic adsorption mechanism is arranged in the middle of the inner side wall of the dust cover (10).

2. A reduction gear unit capable of preventing foreign matter from entering a casing, according to claim 1, wherein: the electrostatic adsorption mechanism is including being annular electrostatic adsorption board (102), offer annular holding tank (103) that are used for placing electrostatic adsorption board (102) on the inside wall of shield (10), equal fixedly connected with rubber pad (104) on the both ends of electrostatic adsorption board (102), rubber pad (104) cooperation is installed in annular holding tank (103), set up chamber (105) that hold of opening towards third sealing washer (8) in shield (10), it is equipped with power supply ware (106) of being connected with electrostatic adsorption board (102) electricity in chamber (105) to hold.

3. A speed reducer capable of preventing foreign matter from entering a casing, according to claim 1, wherein: a magnetic adsorption mechanism is fixedly installed in the extension end (5), is positioned between the second sealing ring (7) and the dust cover (10), and is sleeved outside the output shaft (3) in a clearance mode.

4. A reduction gear unit capable of preventing foreign matter from entering a casing, according to claim 3, wherein: the magnetic adsorption mechanism comprises an annular magnet (52), an annular groove (51) is formed in the inner side wall of the extending end (5), and the annular magnet (52) is installed in the annular groove (51) in a matched mode.

5. A speed reducer capable of preventing foreign matter from entering a casing, according to claim 4, wherein: the annular magnet (52) is composed of at least three magnet segments (53), and a fixing mechanism for fixing the magnet segments (53) in an annular shape is arranged in the extending end (5).

6. A reduction gear unit capable of preventing foreign matter from entering a casing, according to claim 5, wherein: the fixing mechanism comprises a front fixing hoop (54) and a rear fixing hoop (55), the front fixing hoop (54) is pressed on one side of the annular magnet (52), the rear fixing hoop (55) is pressed on the other side of the annular magnet (52), and the front fixing hoop (54) and the rear fixing hoop (55) are fixed through a bolt (56).

7. A speed reducer capable of preventing foreign matter from entering a casing, according to claim 1, wherein: the output shaft (3) is equipped with two to be located the both sides of input shaft (2) respectively, the gear drive subassembly is including pinion (21) and gear wheel (31) of fixed connection on output shaft (3) on fixed connection on input shaft (2), pinion (21) and gear wheel (31) mesh mutually.

8. A reduction gear unit capable of preventing foreign matter from entering a casing, according to claim 1, wherein: one end, far away from the extending end (5), of the dustproof cover (10) is provided with a limiting step (101) protruding outwards, the end face, far away from the extending end (5), of the output flange (9) is abutted to the limiting step (101), and the electrostatic adsorption mechanism is located between the limiting step (101) and the third sealing ring (8).