Sealing end cover of speed reducer

Abstract

The utility model discloses a speed reducer sealing end cover, and relates to the technical field of speed reducers. The cap comprises a cap body and a positioning lantern ring integrally and fixedly connected to the rear end of the cap body. Assembling holes are uniformly formed in the outer side of the cap in the circumferential direction; the outer wall of the positioning lantern ring is fixedly sleeved with a first sealing gasket. A mounting through hole is formed in the middle of the cap; the mounting through hole is eccentrically arranged relative to the positioning lantern ring; an adjusting sleeve is rotationally sleeved in the mounting through hole; a shaft penetrating hole is formed in the adjusting sleeve; the shaft penetrating hole is eccentrically arranged relative to the mounting through hole; the rear end of the adjusting sleeve is integrally and fixedly connected with a shaft sleeve; the shaft sleeve is coaxially communicated with the shaft penetrating hole; when the adjusting sleeve rotates until the distance between the axis of the shaft penetrating hole and the axis of the mounting through hole is the farthest, the shaft sleeve coaxially corresponds to the positioning lantern ring. The speed reducer has the advantages that the distance between the transmission shafts can be flexibly adjusted within a certain range, the number of reduction ratio combinations which can be achieved is increased, and the use flexibility of the speed reducer is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of speed reducer especially relates to a speed reducer sealing end cover. BACKGROUND

[0002] Speed reducer is a kind of independent component by the gear transmission, worm transmission, gear-worm transmission composed in rigid shell, commonly used as the speed reducer of the drive member and work machine between speed reduction transmission device.Speed reducer sealing end cover is usually arranged at the transmission shaft end portion in speed reducer, for realizing the sealing between transmission shaft and speed reducer shell.However, the position for installing transmission shaft end portion on current sealing end cover is fixed, the spacing between transmission shafts in speed reducer is not adjustable, the gear set type on adjacent transmission shafts is single, only a few speed reduction ratio combinations can be achieved, the use flexibility of speed reducer is insufficient. SUMMARY

[0003] The utility model provides a kind of speed reducer sealing end cover, it can flexibly adjust the spacing between transmission shafts within a certain range, increase the number of speed reduction ratio combinations that can be achieved, improve the use flexibility of speed reducer.

[0004] The technical scheme adopted by the utility model is as follows: a kind of speed reducer sealing end cover is provided, including cap and the positioning sleeve ring integrally connected in the rear end of cap;Cap outside is evenly opened with assembly hole along circumference;First sealing pad is fixedly connected on the outer wall of positioning sleeve ring;Cap middle part is opened with installation through-hole;Installation through-hole is eccentric with respect to positioning sleeve ring;Adjusting sleeve is rotatably connected in installation through-hole;Thread hole is opened on adjusting sleeve;Thread hole is eccentric with respect to installation through-hole;Adjusting sleeve rear end is integrally connected with the sleeve;Sleeve is coaxially communicated with thread hole;When adjusting sleeve rotates to the farthest distance between the axis of thread hole and the axis of installation through-hole, sleeve is coaxially corresponding with positioning sleeve ring;Positioning and locking mechanism is arranged on the front end of adjusting sleeve;

[0005] The positioning and locking mechanism includes the external gear ring integrally connected on the front end of adjusting sleeve;External gear ring is coaxially corresponding with installation through-hole;Cap front end is fixedly connected with sliding sleeve;Sliding sleeve is slidably connected with clamping block;Locking teeth are opened on the side of clamping block close to external gear ring;Locking teeth are correspondingly clamped with the outer periphery of external gear ring;Control screw is rotatably connected on clamping block;Control screw is arranged along the direction parallel to clamping block;Control screw is screw-connected with sliding sleeve.

[0006] Further optimize the technical scheme, the outer wall of the adjusting sleeve of a kind of speed reducer sealing end cover is fixedly connected with second sealing pad.

[0007] Further optimize the technical scheme, the external gear ring of a kind of speed reducer sealing end cover is fixedly connected with anti-skid boss along circumference on the front end.

[0008] Further optimize the technical scheme, a speed reducer sealing end cover outer gear ring inside corresponding thread connection has a cover.

[0009] The utility model discloses beneficial effect lies in:

[0010] 1, the positioning collar can be sleeved into the mounting hole position on the speed reducer, and the sealing of the mounting hole position on the speed reducer is realized through the first sealing gasket, and the connection and fixation between the cap and the speed reducer can be realized through the assembling hole.

[0011] The mounting through hole is eccentrically arranged relative to the positioning collar, the adjusting sleeve is rotatably sleeved in the mounting through hole, and the penetrating shaft hole is eccentrically arranged relative to the mounting through hole, so that the distance between the penetrating shaft hole axis and the positioning collar axis can be changed through the rotation of the adjusting sleeve; the penetrating shaft hole can be used for the transmission shaft to pass out, the shaft sleeve can be used for being connected with the transmission shaft, and the transmission shaft position can be adjusted through the change of the distance between the penetrating shaft hole axis and the positioning collar axis, so that gears with different diameters can be installed on the transmission shaft, and the reduction ratio can be changed.

[0012] 2, the outer gear ring is coaxial with the mounting through hole, the outer gear ring is integrally connected to the adjusting sleeve, so that the outer gear ring can rotate with the adjusting sleeve; through the adjustment of the control screw, the locking teeth on the clamping block can be clamped with the outer periphery of the outer gear ring, the outer gear ring is locked, and the adjusting sleeve is locked, so that the mounting position of the transmission shaft is locked. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the structural schematic diagram of the utility model;

[0014] Figure 2 It is the structural schematic diagram when the transmission shaft is installed;

[0015] Figure 3 It is the structural exploded view of the adjusting sleeve;

[0016] Figure 4 It is the structural schematic diagram when the cover is installed;

[0017] Figure 5 It is the state schematic diagram when the shaft sleeve and the positioning collar are coaxial.

[0018] In the drawing, 1, transmission shaft, 2, cap, 3, positioning collar, 4, assembling hole, 5, first sealing gasket, 6, mounting through hole, 7, adjusting sleeve, 8, penetrating shaft hole, 9, shaft sleeve, 10, outer gear ring, 11, sliding sleeve, 12, clamping block, 13, locking tooth, 14, control screw, 15, second sealing gasket, 16, anti-skid boss, 17, cover. DETAILED DESCRIPTION

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0020] like Figure 1 As shown, a reducer sealing end cover includes a cap 2 and a positioning collar 3 integrally fixed to the rear end of the cap 2; the cap 2 has uniformly spaced assembly holes 4 along its outer circumference; a first sealing gasket 5 is fitted and fixed to the outer wall of the positioning collar 3; an installation through hole 6 is opened in the middle of the cap 2; the installation through hole 6 is eccentrically positioned relative to the positioning collar 3; an adjusting sleeve 7 is rotatably fitted inside the installation through hole 6; a through-shaft hole 8 is opened on the adjusting sleeve 7; the through-shaft hole 8 is eccentrically positioned relative to the installation through hole 6; a bushing 9 is integrally fixed to the rear end of the adjusting sleeve 7; the bushing 9 is coaxially connected to the through-shaft hole 8; when the adjusting sleeve 7 rotates to the point where the distance between the axis of the through-shaft hole 8 and the axis of the installation through hole 6 is the farthest, the bushing 9 is coaxially corresponding to the positioning collar 3; a positioning locking mechanism is provided at the front end of the adjusting sleeve 7.

[0021] like Figure 2 As shown, the positioning and locking mechanism includes an outer gear ring 10 integrally fixed to the front end of the adjusting sleeve 7; the outer gear ring 10 is coaxially corresponding to the mounting through hole 6; a sliding sleeve 11 is fixed to the front end of the cap 2; a snap-fit ​​block 12 is slidably connected inside the sliding sleeve 11; a locking tooth 13 is opened on the side of the snap-fit ​​block 12 near the outer gear ring 10; the locking tooth 13 is snap-fitted and corresponds to the outer peripheral surface of the outer gear ring 10; a control screw 14 is rotatably connected to the snap-fit ​​block 12; the control screw 14 is set in a direction parallel to the snap-fit ​​block 12; the control screw 14 is threadedly connected to the sliding sleeve 11.

[0022] The reduction ratio of a speed reducer is the ratio of the number of teeth between gear sets. The number of teeth of a standard gear is directly related to the diameter of the gear. Therefore, the most direct way to change the reduction ratio is to change the diameter ratio of the gear set.

[0023] Because the position of the end of the traditional sealing end cover is fixed, the spacing between the transmission shafts 1 inside the reducer cannot be changed. That is, the total diameter of the meshing gears cannot be changed. Obviously, under this premise, if you want to change the diameter ratio of the gear set, you can only replace all the gears together, which is not flexible and convenient.

[0024] In this technical solution, the distance between the axis of the bushing 9 and the axis of the positioning ring 3 can be changed by rotating the adjusting sleeve 7 within the mounting through hole 6. Figure 2 As shown, bushing 9 is used to install drive shaft 1 (bearings, bearing seats and other components can be installed inside bushing 9 to ensure smooth rotation of drive shaft 1), and positioning collar 3 is used to install with reducer housing. Therefore, when the axial distance between bushing 9 and positioning collar 3 changes, the distance between drive shaft 1 installed at one location and drive shaft 1 at another location can be changed. At this time, if you want to change the diameter ratio of the gear set, you only need to replace the gear on the drive shaft 1. Obviously, it is flexible and convenient enough, and the combination of changeable reduction ratios is greatly increased.

[0025] During the above process, when the adjusting sleeve 7 is rotated into position, simply turn the control screw 14 to drive the locking block 12 to move closer to the outer gear ring 10 that is integrated with the adjusting sleeve 7. By locking the teeth 13 with the outer peripheral surface of the outer gear ring 10, the positioning of the adjusting sleeve 7 can be achieved.

[0026] When the adjusting sleeve 7 rotates to the point where the distance between the center of the through hole 8 and the center of the mounting through hole 6 is the greatest, the bushing 9 and the positioning collar 3 are coaxially aligned. Figure 5 As shown, this is the installation state of the reducer at its standard reduction ratio. In this state, regardless of the angle at which the cap 2 is installed with the reducer housing, the through-shaft hole 8 is coaxial with the positioning collar 3. It should also be noted that this is not the state where the drive shafts 1 are furthest apart, because the installation angle of the cap 2 can be changed.

[0027] like Figure 3 As shown, the outer wall of the adjusting sleeve 7 is fitted with a second sealing gasket 15, which can ensure the seal between the adjusting sleeve 7 and the mounting through hole 6, and ensure the reliability after installation.

[0028] like Figure 4 As shown, anti-slip protrusions 16 are evenly fixed at the front end of the external gear ring 10 along the circumferential direction. The rotation of the adjusting sleeve 7 can be easily controlled manually through the anti-slip protrusions 16.

[0029] like Figure 4 As shown, the external gear ring 10 has a corresponding threaded connection to the cover 17. In some cases, the end of the drive shaft 1 does not extend out of the reducer, so the cover 17 can be provided to seal the reducer in this case.

[0030] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A reducer seal end cap characterized by: The utility model relates to a kind of cap and positioning ring, including cap (2) and the positioning ring (3) integrally connected in the rear end of cap (2);Cap (2) outside is evenly opened along circumference and is equipped with assembly hole (4);The first sealing pad (5) is fixed with in the outer wall sleeve of positioning ring (3);Cap (2) middle part is opened and is equipped with installation through-hole (6);Installation through-hole (6) is eccentric to positioning ring (3) and is arranged;Adjusting sleeve (7) is rotatably sleeved in installation through-hole (6);Adjusting sleeve (7) is opened and is equipped with through shaft hole (8);Through shaft hole (8) is eccentric to installation through-hole (6) and is arranged;Adjusting sleeve (7) rear end is integrally connected with shaft sleeve (9);Shaft sleeve (9) is coaxially communicated with through shaft hole (8);When adjusting sleeve (7) is rotated to the farthest distance between the axis of through shaft hole (8) and the axis of installation through-hole (6), shaft sleeve (9) is coaxially corresponding with positioning ring (3);Adjusting sleeve (7) front end is provided with positioning locking mechanism; The positioning locking mechanism includes the external gear ring (10) integrally connected in the front end of adjusting sleeve (7);External gear ring (10) is coaxially corresponding with installation through-hole (6);Cap (2) front end is fixed with sliding sleeve (11);Sliding sleeve (11) is slidably connected with clamping block (12);Locking tooth (13) is opened on the side of clamping block (12) close to external gear ring (10);Locking tooth (13) and the outer periphery of external gear ring (10) are connected with each other;Control screw (14) is rotatably connected on clamping block (12);Control screw (14) is arranged in the direction parallel to clamping block (12);Control screw (14) is threadedly connected with sliding sleeve (11).

2. A reducer sealing end cover according to claim 1, characterized in that: The second sealing pad (15) is fixed with on the outer wall of adjusting sleeve (7).

3. A reducer sealing end cover according to claim 1, characterized in that: Anti-skid boss (16) is fixed on the front end of external gear ring (10) along circumference.

4. A reducer sealing end cover according to claim 1, characterized in that: Corresponding threaded connection has cover (17) in the inside of external gear ring (10).

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