阅读说明：本技术 一种机械设计用转轴锁定机构 (Rotating shaft locking mechanism for mechanical design ) 是由 张丽 于 2021-08-27 设计创作，主要内容包括：本发明公开了一种机械设计用转轴锁定机构,属于机械设备技术领域。该一种机械设计用转轴锁定机构包括：安装座,固定安装于转轴所在的机架；壳体,右端面与安装座固连；通油板,右端面与壳体密封连接,通油板设有第一通油孔和安装孔；液压锁,包括圆柱形锁体、至少两个T形块；封油板,右端面与通油板的左端面滑动密接；壳盖,右端面与封油板左端面密封滑动连接；套管,内通孔与转轴外壁固连,套管穿过锁体的中心通孔与锁体固连；液压油,充满壳体的内腔和通油腔。本发明的一种机械设计用转轴锁定机构能够起到很好的防振和吸振作用,能够有效避免转轴振动造成的锁定不牢,锁定机构磨损和噪音问题。(The invention discloses a rotating shaft locking mechanism for mechanical design, and belongs to the technical field of mechanical equipment. This pivot locking mechanical system for mechanical design includes: the mounting seat is fixedly mounted on the rack where the rotating shaft is located; the right end surface of the shell is fixedly connected with the mounting seat; the right end face of the oil passing plate is hermetically connected with the shell, and the oil passing plate is provided with a first oil passing hole and a mounting hole; the hydraulic lock comprises a cylindrical lock body and at least two T-shaped blocks; the right end surface of the oil sealing plate is in sliding joint with the left end surface of the oil through plate; the right end face of the shell cover is in sealed sliding connection with the left end face of the oil seal plate; the inner through hole of the sleeve is fixedly connected with the outer wall of the rotating shaft, and the sleeve penetrates through the central through hole of the lock body and is fixedly connected with the lock body; and hydraulic oil is filled in the inner cavity of the shell and the oil through cavity. The rotating shaft locking mechanism for mechanical design can play a good role in vibration prevention and vibration absorption, and can effectively avoid the problems of poor locking, abrasion of the locking mechanism and noise caused by the vibration of the rotating shaft.)

1. The utility model provides a pivot locking mechanical system for mechanical design which characterized in that includes:

the mounting seat (101) is fixedly mounted on the frame where the rotating shaft (111) is located;

the right end face of the shell (102) is fixedly connected with the mounting seat (101), and the shell (102) is provided with an eccentric hole;

the right end face of the oil passing plate (103) is connected with the shell (102) in a sealing mode, the oil passing plate (103) is provided with a first oil passing hole (104) and a mounting hole, and the first oil passing hole (104) is communicated with an inner cavity (105) of the shell (102);

the hydraulic lock comprises a cylindrical lock body (201) and at least two T-shaped blocks (206), wherein a central through hole and at least two rectangular grooves (203) are formed in the lock body (201), and the side wall of the large end of each T-shaped block (206) is in sealing sliding connection with different rectangular grooves (203);

the right end face of the oil sealing plate (106) is in sliding close contact with the left end face of the oil passing plate (103), the oil sealing plate (106) is provided with a second oil passing hole (107) and a mounting hole, and the second oil passing hole (107) can be communicated with the first oil passing hole (104);

the right end face of the shell cover (108) is connected with the left end face of the oil sealing plate (106) in a sealing and sliding mode, an oil through cavity (109) is arranged between the shell cover (108) and the oil sealing plate (106), the shell cover (108) is also provided with a mounting hole, and the oil through cavity (109) is communicated with the second oil through hole (107);

the inner through hole of the sleeve (110) is fixedly connected with the outer wall of the rotating shaft (111), the sleeve (110) is connected with the shell cover (108), the oil sealing plate (106) and the mounting hole of the oil through plate (103) in a sealing and sliding mode, the sleeve (110) is fixedly connected with the central through hole of the lock body (201), and the sleeve (110) is connected with the eccentric hole of the shell (102) in a sealing and sliding mode;

hydraulic oil filling the inner cavity (105) of the housing (102) and the oil through cavity (109).

2. A mechanical design spindle locking mechanism according to claim 1, wherein a limiting ring (202) is sleeved on the arc-shaped outer wall of the lock body (201), the limiting ring (202) is provided with a through groove (204), the small end of the T-shaped block (206) passes through the through groove (204) and is in sliding connection with the through groove (204) in a sealing manner, and the large end of the T-shaped block (206) forms a sealed cabin (205) with the limiting ring (202) and the rectangular groove (203).

3. The rotating shaft locking mechanism for mechanical design as claimed in claim 2, wherein the lock body (201) and the limiting ring (202) are both provided with a third oil passing hole (301), one end of the third oil passing hole (301) is communicated with the bottom of the rectangular groove (203), the other end of the third oil passing hole (301) is communicated with the inner cavity (105) of the shell (102), the shell cover (108) is provided with a fourth oil passing hole (302), one end of the fourth oil passing hole (302) is communicated with the oil passing cavity (109), the other end of the fourth oil passing hole (302) is connected with an oil passing pipe (303), the oil passing pipe (303) is connected with an oil supply and oil pumping device, the oil supply and oil pumping device is electrically connected with a main control board, and the main control board is electrically connected with a power supply module.

4. A mechanical design rotating shaft locking mechanism according to claim 3, characterized in that the oil supply and oil pumping device comprises a hydraulic sensor (401), a stop valve (402), a two-way oil pump (403) and an oil tank, the oil pipe (303) is respectively communicated with the hydraulic sensor (401) and the stop valve (402), the stop valve (402) is communicated with the two-way oil pump (403), and the two-way oil pump (403) is communicated with the oil tank.

5. The rotating shaft locking mechanism for mechanical design according to claim 1, wherein a layer of wear-resistant rubber (501) is fixedly connected to a side wall of the inner cavity (105) of the housing (102), a wear-resistant rubber ring (502) is further arranged between the housing cover (108) and the oil seal plate (106), the rubber ring (502) is fixedly connected to the oil seal plate (106), and a right end face of the housing cover (108) is in sealed sliding connection with the rubber ring (502).

6. A mechanical design spindle locking mechanism according to claim 1, characterized in that the oil seal plate (106) is provided with a knob (6) on the side wall.

Technical Field

The invention relates to the technical field of mechanical equipment, in particular to a rotating shaft locking mechanism for mechanical design.

Background

The mechanical industry is the most basic industrial industry, and the power is transmitted by the rotating shaft in mechanical design, and the rotating shaft has the advantages of accurate transmission and high transmission efficiency. When the rotating shaft transmission is used, a braking and locking mechanism needs to be designed to prevent the rotating shaft from rotating when the rotating shaft needs to stop rotating.

Some shafts often operate under vibratory conditions, while conventional mechanical designs use shaft locking mechanisms, which use friction to lock the shaft. When the rotating shaft works under the vibration working condition, the rotating shaft locking mechanism which locks the shaft by friction force easily causes the problems of poor locking, abrasion of the locking mechanism and noise.

Disclosure of Invention

The invention aims to overcome the problems in the prior art and provides a rotating shaft locking mechanism for mechanical design.

The invention provides a rotating shaft locking mechanism for mechanical design, which comprises:

the mounting seat is fixedly mounted on the rack where the rotating shaft is located;

the right end face of the shell is fixedly connected with the mounting seat, and the shell is provided with an eccentric hole;

the right end face of the oil passing plate is connected with the shell in a sealing mode, the oil passing plate is provided with a first oil passing hole and a mounting hole, and the first oil passing hole is communicated with the inner cavity of the shell;

the hydraulic lock comprises a cylindrical lock body and at least two T-shaped blocks, wherein a central through hole and at least two rectangular grooves are formed in the lock body, and the side wall of the large end of each T-shaped block is in sealing sliding connection with different rectangular grooves;

the right end surface of the oil sealing plate is in sliding tight joint with the left end surface of the oil through plate, the oil sealing plate is provided with a second oil through hole and a mounting hole, and the second oil through hole can be communicated with the first oil through hole;

the right end face of the shell cover is connected with the left end face of the oil sealing plate in a sealing sliding mode, an oil through cavity is formed between the shell cover and the oil sealing plate, the shell cover is also provided with a mounting hole, and the oil through cavity is communicated with the second oil through hole;

the inner through hole of the sleeve is fixedly connected with the outer wall of the rotating shaft, the sleeve is in sealed sliding connection with the shell cover, the oil sealing plate and the mounting hole of the oil through plate, the sleeve is fixedly connected with the central through hole of the lock body, and the sleeve is in sealed sliding connection with the eccentric hole of the shell;

and the hydraulic oil is filled in the inner cavity of the shell and the oil through cavity.

Preferably, the arc-shaped outer wall of the lock body is sleeved with a limiting ring, the limiting ring is provided with a through groove, the small head end of the T-shaped block penetrates through the through groove and is in sealing sliding connection with the through groove, and the large head end of the T-shaped block, the limiting ring and the rectangular groove form a sealed cabin.

Preferably, the lock body and the limiting ring are provided with third oil through holes, one end of each third oil through hole is communicated with the bottom of the rectangular groove, the other end of each third oil through hole is communicated with the inner cavity of the shell, the shell cover is provided with a fourth oil through hole, one end of each fourth oil through hole is communicated with the corresponding oil through cavity, the other end of each fourth oil through hole is connected with an oil through pipe, each oil through pipe is connected with an oil supply device and an oil pumping device, the oil supply device and the oil pumping device are electrically connected with a main control board, and the main control board is electrically connected with a power supply module.

Preferably, the oil supply and pumping device comprises a hydraulic sensor, a stop valve, a two-way oil pump and an oil tank, the oil pipe is respectively communicated with the hydraulic sensor and the stop valve, the stop valve is communicated with the two-way oil pump, and the two-way oil pump is communicated with the oil tank.

Preferably, the side wall of the inner cavity of the shell is fixedly connected with a layer of wear-resistant rubber, a wear-resistant rubber ring is further arranged between the shell cover and the oil seal plate, the rubber ring is fixedly connected with the oil seal plate, and the right end face of the shell cover is in sealing sliding connection with the rubber ring.

Preferably, the side wall of the oil seal plate is provided with a knob.

Compared with the prior art, the invention has the beneficial effects that: the hydraulic oil arranged in the rotating shaft locking mechanism for mechanical design has certain vibration absorption effect, and the gas in the sealed cabin in the locking mechanism also has certain compressibility. Therefore, the rotating shaft locking mechanism for mechanical design can play a good role in vibration prevention and vibration absorption, and can effectively avoid the problems of poor locking, abrasion of the locking mechanism and noise caused by the vibration of the rotating shaft. Furthermore, the rotating shaft locking mechanism does not rely on friction force to lock the shaft, so that the rotating shaft locking mechanism can effectively prevent abrasion and has longer service life. When the rotating shaft rotates, the small head end of the T-shaped block can be effectively ensured to be separated from the contact with the inner wall of the shell, so that the purposes of reducing the friction force between the small head end of the T-shaped block and the inner wall of the shell, further reducing the abrasion of the T-shaped block and reducing the rotating resistance of the rotating shaft are achieved. The amount of the supplied hydraulic oil and the amount of the pumped hydraulic oil can be accurately controlled by arranging the hydraulic sensor and the stop valve, and the bidirectional pump is prevented from being damaged by overpressure.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a main sectional view of the structure of the present invention;

FIG. 3 is a cross-sectional view taken along plane A-A of the present invention;

fig. 4 is a perspective view of the lock body of the present invention.

Description of reference numerals:

101. the oil seal structure comprises a mounting seat, 102, a shell, 103, an oil through plate, 104, a first oil through hole, 105, an inner cavity, 106, an oil seal plate, 107, a second oil through hole, 108, a shell cover, 109, an oil through cavity, 110, a sleeve, 111, a rotating shaft, 201, a lock body, 202, a limiting ring, 203, a rectangular groove, 204, a through groove, 205, a seal cabin, 206, a T-shaped block, 301, a third oil through hole, 302, a fourth oil through hole, 303, an oil through pipe, 401, a hydraulic sensor, 402, a stop valve, 403, a two-way oil pump, 501, wear-resistant rubber, 502, a rubber ring and 6 a knob.

Detailed Description

Detailed description of the preferred embodimentsthe following detailed description of the present invention will be given with reference to the accompanying drawings 1-4, but it should be understood that the scope of the present invention is not limited to the specific embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Example 1:

as shown in fig. 1 to 4, the present invention provides a shaft locking mechanism for mechanical design, comprising: the hydraulic oil seal device comprises a mounting seat 101, a shell 102, an oil through plate 103, a hydraulic lock, an oil seal plate 106, a shell cover 108 and a sleeve 110, wherein the mounting seat 101 is fixedly mounted on a rack where a rotating shaft 111 is located; the right end face of the shell 102 is fixedly connected with the mounting seat 101, and the shell 102 is provided with an eccentric hole; the right end surface of the oil passing plate 103 is connected with the shell 102 in a sealing manner, the oil passing plate 103 is provided with a first oil passing hole 104 and a mounting hole, and the first oil passing hole 104 is communicated with an inner cavity 105 of the shell 102; the hydraulic lock comprises a cylindrical lock body 201 and at least two T-shaped blocks 206, wherein a central through hole and at least two rectangular grooves 203 are formed in the lock body 201, and the side wall of the large end of each T-shaped block 206 is in sealing sliding connection with different rectangular grooves 203; the right end surface of the oil sealing plate 106 is in sliding close contact with the left end surface of the oil through plate 103, the oil sealing plate 106 is provided with a second oil through hole 107 and a mounting hole, and the second oil through hole 107 can be communicated with the first oil through hole 104; the right end face of the shell cover 108 is connected with the left end face of the oil sealing plate 106 in a sealing sliding mode, an oil through cavity 109 is formed between the shell cover 108 and the oil sealing plate 106, the shell cover 108 is also provided with a mounting hole, and the oil through cavity 109 is communicated with the second oil through hole 107; the inner through hole of the sleeve 110 is fixedly connected with the outer wall of the rotating shaft 111, the sleeve 110 is in sealed sliding connection with the mounting holes of the shell cover 108, the oil sealing plate 106 and the oil through plate 103, the sleeve 110 is fixedly connected with the central through hole of the lock body 201, and the sleeve 110 is in sealed sliding connection with the eccentric hole of the shell 102; hydraulic oil filling the internal cavity 105 of the housing 102 and the oil through cavity 109.

The working principle of example 1 is now briefly described:

when the rotating shaft 111 does not need to be locked, that is, when the rotating shaft 111 locking mechanism of the present invention does not work, the oil seal plate 106 is rotated by hand to communicate the second oil passing hole 107 of the oil seal plate 106 with the first oil passing hole 104 of the oil passing plate 103, and at this time, the inner cavity 105 of the housing 102, the first oil passing hole 104, the second oil passing hole 107, and the oil passing cavity 109 communicate with each other. The rotating shaft 111 drives the sleeve 110 fixed on the rotating shaft to rotate, the sleeve 110 drives the hydraulic lock body 201 fixed on the sleeve to rotate, and the lock body 201 drives the T-shaped block 206 to rotate. The plurality of T-blocks 206 divide the interior cavity 105 of the housing 102 into a plurality of separate small chambers that are filled with hydraulic fluid and that have different volumes due to the sliding sealing connection of the sleeve 110 through the eccentric aperture of the housing 102 to the housing 102. When the lock body 201 drives the T-shaped block 206 to rotate, the big head end of the T-shaped block 206 slides up and down in the rectangular groove 203. Therefore, the volume of these small chambers changes, and when the small chambers with large volumes change to small chambers with small volumes, the hydraulic oil in the small chambers is discharged into the oil passage chamber 109 between the oil seal plates 106 of the case cover 108 through the first oil passage hole 104 and the second oil passage hole 107. When the small chamber having a small volume is changed to a small chamber having a large volume, the hydraulic oil in the oil passage chamber 109 is sucked into the small chamber through the first oil passage hole 104 and the second oil passage hole 107. Thus, the rotation shaft 111 is ensured to rotate normally.

When the rotating shaft 111 needs to be locked, that is, when the rotating shaft 111 locking mechanism of the present invention is operated, the oil sealing plate 106 is rotated by hand to seal the first oil passing hole 104 of the oil passing plate 103 with the oil sealing plate 106, and at this time, the inner cavity 105 of the housing 102 cannot communicate with the oil passing cavity 109. When pivot 111 had the pivoted trend this moment, can indirectly drive T-shaped piece 206 and have the pivoted trend, nevertheless because it is isolated with a plurality of independent locuses to seal oil board 106, the hydraulic oil in the locuses can not circulate each other, because the existence of hydraulic oil, the locuses volume can ' T change, and then under the effect of hydraulic oil, can exert the resistance to T-shaped piece 206, lead to T-shaped piece 206 can ' T rotate, and then lead to lock body 201 can ' T rotate, and then indirectly lead to the unable rotation of pivot 111. Even if the rotating shaft 111 vibrates continuously, the hydraulic oil has a certain vibration absorption effect, so that the vibration-proof effect can be achieved well. Furthermore, the locking mechanism of the rotating shaft 111 of the present invention does not rely on friction force to lock the shaft, so that it can effectively prevent abrasion and has a long service life.

Example 2:

in addition to embodiment 1, in order to reduce the friction between the small end of the T-block 206 and the inner wall of the housing 102 when the rotating shaft 111 rotates normally.

As shown in fig. 2 and 3, a limiting ring 202 is sleeved on the arc-shaped outer wall of the lock body 201, the limiting ring 202 is provided with a through groove 204, the small head end of the T-shaped block 206 passes through the through groove 204 and is in sliding connection with the through groove 204 in a sealing manner, and the large head end of the T-shaped block 206, the limiting ring 202 and the rectangular groove 203 form a sealed cabin 205.

When the rotating shaft 111 normally rotates, the T-shaped block 206 is under the action of centrifugal force, so that the T-shaped block 206 tends to be away from the rotating shaft 111, and because the large-end of the T-shaped block 206, the limit ring 202 and the rectangular groove 203 form the sealed cabin 205, under the action of air pressure, the centrifugal force of the T-shaped block 206 is partially offset by atmospheric pressure in the opposite direction, so that the pressure of the T-shaped block 206 on the inner wall of the housing 102 is reduced, and the friction force between the T-shaped block 206 and the inner wall of the housing 102 is reduced. And the gas in the sealed cabin 205 also has certain compressibility, so that the vibration generated by the rotating shaft 111 in normal operation can be reduced.

Example 3:

on the basis of embodiment 2, in order to reduce the friction between the small end of the T-block 206 indirectly carried by the rotating shaft 111 and the inner wall of the housing 102 when the rotating shaft 111 does not need to be locked, i.e. when the locking mechanism of the rotating shaft 111 does not work, the abrasion of the T-block 206 is reduced and the rotation resistance of the rotating shaft 111 is reduced.

As shown in fig. 2 and 3, the lock body 201 and the limiting ring 202 are both provided with a third oil passing hole 301, one end of the third oil passing hole 301 is communicated with the bottom of the rectangular groove 203, the other end of the third oil passing hole 301 is communicated with the inner cavity 105 of the housing 102, the housing cover 108 is provided with a fourth oil passing hole 302, one end of the fourth oil passing hole 302 is communicated with the oil passing cavity 109, the other end of the fourth oil passing hole 302 is connected with an oil passing pipe 303, the oil passing pipe 303 is connected with an oil supplying and pumping device, the oil supplying and pumping device is electrically connected with a main control board, and the main control board is electrically connected with a power module.

When the rotating shaft 111 does not need to be locked, that is, when the rotating shaft 111 locking mechanism of the present invention does not work, the oil seal plate 106 is rotated by hand to communicate the second oil passing hole 107 of the oil seal plate 106 with the first oil passing hole 104 of the oil passing plate 103, and at this time, the inner cavity 105 of the housing 102, the first oil passing hole 104, the second oil passing hole 107, and the oil passing cavity 109 communicate with each other. Meanwhile, the oil supply and pumping unit starts pumping oil, and a part of hydraulic oil is discharged from the oil through cavity 109, so that the T-shaped block 206 is sucked into the rectangular groove 203, and the small end of the T-shaped block 206 is separated from the inner wall of the shell 102. When the rotary shaft 111 rotates, even if the T-block 206 tends to protrude from the rectangular groove 203 by the centrifugal force, the T-block 206 cannot protrude from the rectangular groove 203 because the volume of the hydraulic oil cannot be increased. Therefore, when the rotating shaft 111 rotates, the small end of the T-shaped block 206 can be effectively ensured to be separated from the inner wall of the housing 102, so that the friction between the small end of the T-shaped block 206 and the inner wall of the housing 102 is reduced, and the purposes of reducing the abrasion of the T-shaped block 206 and reducing the rotation resistance of the rotating shaft 111 are achieved.

When the rotating shaft 111 needs to be locked, that is, when the locking mechanism of the rotating shaft 111 of the present invention is operated, the oil supplying and pumping unit starts supplying oil, so that the T-shaped block 206 is completely protruded from the rectangular groove 203. Then, the oil seal plate 106 is rotated by hand to seal the first oil passage hole 104 of the oil passage plate 103 with the oil seal plate 106, and at this time, the locking mechanism of the rotating shaft 111 of the present invention can function normally. Further, when the rotating shaft 111 tends to rotate, a part of the hydraulic oil enters the rectangular groove 203 through the third oil passing hole 301 and starts to press the large end of the T-shaped block 206, so that the pressure of the small end of the T-shaped block 206 on the inner wall of the housing 102 is increased, and the friction between the T-shaped block 206 and the inner wall of the housing 102 is increased.

Example 4:

on the basis of embodiment 3, in order to enable the oil supply and pumping device to accurately control the amount of supplied hydraulic oil and pumped hydraulic oil, the equipment is prevented from being damaged by overpressure.

As shown in fig. 1, the oil supplying and pumping device includes a hydraulic sensor 401, a stop valve 402, a two-way oil pump 403 and an oil tank, the oil pipe 303 is respectively communicated with the hydraulic sensor 401 and the stop valve 402, the stop valve 402 is communicated with the two-way oil pump 403, the two-way oil pump 403 is communicated with the oil tank, and both the hydraulic sensor 401 and the two-way oil pump 403 are electrically connected with the main control board.

When the oil supply and pumping unit needs to pump oil, the stop valve 402 is opened, the main control board controls the bidirectional oil pump 403 to start pumping oil, the hydraulic sensor 401 transmits a hydraulic pressure value monitored in real time to the main control board, and when the hydraulic pressure value reaches a preset pressure, the main control board controls the bidirectional oil pump 403 to stop pumping oil and close the stop valve 402. The same principle is used when the oil supply device and the oil pumping device need oil supply. The hydraulic sensor 401 and the stop valve 402 can accurately control the amount of the hydraulic oil to be supplied and the amount of the hydraulic oil to be pumped, and damage to the bidirectional pump caused by overpressure is prevented.

As a preferable scheme, as shown in fig. 2 and 3, a layer of wear-resistant rubber 501 is fixedly connected to a side wall of the inner cavity 105 of the housing 102, a wear-resistant rubber ring 502 is further disposed between the housing cover 108 and the oil seal plate 106, the rubber ring 502 is fixedly connected to the oil seal plate 106, and a right end face of the housing cover 108 is in sealed sliding connection with the rubber ring 502. The wear-resistant rubber 501 arranged on the side wall of the inner cavity 105 of the shell 102 not only can effectively prevent the T-shaped block 206 from being worn, but also can be beneficial to sealing. The same applies to the arrangement of the rubber ring.

As a preferable scheme, as shown in fig. 1-3, the oil seal plate 106 is provided with a knob 6 on the side wall. The knob is arranged to facilitate the operation of an operator.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.