Motor automatic winding planetary transmission integrated machine head with labyrinth seal

Abstract

The utility model relates to a motor automatic winding planetary transmission integrated machine head with a labyrinth seal, which comprises a gear sleeve, a synchronous pulley, a bearing, a cover plate and a sealing ring, one side surface of a gear inner ring is limited through a first step surface, one side surface of a gear outer ring is limited through a second step surface, a locking nut is fixed on the gear sleeve, and the synchronous pulley is fixed on the gear sleeve. The inner side face of the gear abuts against the other side face of the inner ring of the gear, and the cover plate can abut against the other side face of the outer ring of the gear by additionally arranging the cover plate, so that the two sides of the gear are limited by the first step face, the second step face, the cover plate and the locking nut correspondingly, and it is guaranteed that the inner ring and the outer ring of the gear cannot axially move; in addition, the sealing ring is arranged on the peripheral wall of the cover plate in the radial direction in an outward extending mode, the sealing ring and the third step face at the position of the inner ring of the synchronous belt wheel form a labyrinth seal, and impurities are prevented from entering the bearing.

Description

Technical Field

[0001] This utility model relates to the field of integrated winding head technology, and in particular to an integrated automatic winding planetary transmission head for motors with a labyrinth seal. Background Technology

[0002] Chinese patent CN219268687U discloses an integrated planetary drive head for automatic winding of a motor with a labyrinth seal. In use, this integrated planetary drive head uses a half-structure fixing sleeve to secure the bushing of the planetary winding mechanism, and a clamping mechanism to fix the planetary winding mechanism to a fixed plate. This prevents the planetary winding mechanism from shaking and ensures its stable and reliable fixation. It avoids the problem of existing planetary winding machines, which are typically fixed to a mounting plate with clamps, having an unreliable fixation that causes shaking during operation and ultimately leads to the equipment falling.

[0003] The machine head in the text is set vertically, and the fixing plate is set horizontally. Therefore, the bearing will not shift due to its own weight. If the above mechanism is set horizontally, the outer ring of the bearing will shift, the positioning between the gear sleeve and the timing belt pulley will be inaccurate, and the horizontally set machine head cannot guarantee the sealing at the bearing.

[0004] In summary, how to prevent gear sleeves and gears between timing belt pulleys from shifting has become an urgent problem for researchers in this field. Utility Model Content

[0005] The technical problem to be solved by this utility model is: how to prevent the gear sleeve and the gear between the timing belt pulley from shifting;

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] This utility model is an integrated automatic winding planetary transmission head for motors with a labyrinth seal, comprising: a gear sleeve with a first stepped surface on its outer peripheral wall; a synchronous pulley sleeved on the gear sleeve with a second stepped surface on its inner wall; a bearing disposed between the gear sleeve and the synchronous pulley, with one side of its inner ring abutting against the first stepped surface and one side of its outer ring abutting against the second stepped surface; a locking nut fixedly connected to the outer peripheral wall of the gear sleeve, located on the other side of the bearing, with its end face abutting against the other side of the bearing's inner ring, and a receiving cavity provided at the end face of the locking nut; a cover plate sleeved on the locking nut and located at the receiving cavity, fixedly connected to the locking nut, with the end face of the cover plate abutting against the other side of the bearing's outer ring; and a sealing ring extending radially outward from the outer peripheral wall of the cover plate, the sealing ring forming a labyrinth seal with the third stepped surface at the inner ring of the synchronous pulley.

[0008] In this design, one side of the inner ring of the gear is limited by a first stepped surface, and one side of the outer ring of the gear is limited by a second stepped surface. The locking nut is fixed to the gear sleeve, and its inner side abuts against the other side of the inner ring of the gear. By adding a cover plate, the cover plate can abut against the other side of the outer ring of the gear. In this way, both sides of the gear are limited by the first stepped surface, the second stepped surface, the cover plate, and the locking nut, respectively, ensuring that the inner and outer rings of the gear will not move axially, thereby ensuring that the gear sleeve and the gear between the synchronous pulleys do not deviate. In addition, a sealing ring is provided radially outward on the outer peripheral wall of the cover plate. The sealing ring and the third stepped surface at the inner ring of the synchronous pulley form a labyrinth seal, preventing impurities from entering the bearing.

[0009] To illustrate how the cover plate is connected to the timing pulley, this utility model uses bolts to fix the cover plate and the locking nut together.

[0010] To ensure the stability between the synchronous pulley and the gear sleeve, this utility model uses two bearings, with a bearing spacer between the two bearings. The bearing spacer is sleeved on the gear sleeve, and the side of the bearing spacer abuts against the side of the inner ring of the bearing.

[0011] In this design, two bearings are used to ensure that the axis of the synchronous pulley and the axis of the gear sleeve are always horizontal, and to ensure that the distance between the two bearings does not change. A bearing spacer is provided between the two bearings.

[0012] The bearing spacer only restricts the distance between the inner rings of the bearing to remain unchanged. In order to ensure that the distance between the outer rings of the two bearings does not change, the present invention adopts two elastic retaining ring grooves on the inner wall of the synchronous pulley; elastic retaining rings are provided in the elastic retaining ring grooves, and the side of the elastic retaining rings abuts against the side of the corresponding outer ring of the bearing.

[0013] The inner wall of the synchronous belt pulley has two elastic retaining ring grooves, and elastic retaining rings are installed in the elastic retaining ring grooves. The elastic retaining rings abut against the outer ring of the bearing. In this way, the two elastic retaining rings cooperate with the bearing spacer rings to limit the distance between the two bearings to remain unchanged.

[0014] The beneficial effects of this utility model are as follows: This utility model is an integrated head for automatic winding planetary transmission of motor with a labyrinth seal. One side of the inner ring of the gear is limited by a first stepped surface, and one side of the outer ring of the gear is limited by a second stepped surface. The locking nut is fixed on the gear sleeve, and its inner side abuts against the other side of the inner ring of the gear. By adding a cover plate, the cover plate can abut against the other side of the outer ring of the gear. In this way, both sides of the gear are limited by the first stepped surface, the second stepped surface, the cover plate, and the locking nut, respectively, ensuring that the inner and outer rings of the gear will not move axially, thereby ensuring that the gear sleeve and the gear between the synchronous belt pulleys do not deviate. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 It is an exploded view of the lock nut and cover plate;

[0018] Figure 3 This is a schematic diagram of the synchronous belt pulley.

[0019] Figure 4 This is a schematic diagram of the gear sleeve structure;

[0020] In the figure: 1-gear sleeve, 11-first step surface, 2-synchronous belt pulley, 21-second step surface, 22-third step surface, 23-elastic retaining ring groove, 3-bearing, 4-locking nut, 41-accommodating cavity, 5-cover plate, 51-sealing ring, 6-bolt, 7-bearing spacer ring, 8-elastic retaining ring. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0022] like Figure 1-4 As shown, this utility model is an integrated automatic winding planetary transmission head for motors with a labyrinth seal, comprising: a gear sleeve 1, the outer peripheral wall of which is provided with a first stepped surface 11; a synchronous pulley 2 sleeved on the gear sleeve 1, the inner wall of which is provided with a second stepped surface 21; a bearing 3, which is disposed between the gear sleeve 1 and the synchronous pulley 2, one side of its inner ring abutting against the first stepped surface 11, and one side of its outer ring abutting against the second stepped surface 21; and a locking nut 4, which is fixedly connected to the outer peripheral wall of the gear sleeve 1 and is located on the bearing. On the other side of 3, its end face abuts against the other side of the inner ring of the bearing 3, and a receiving cavity 41 is provided at the end face of the locking nut 4; a cover plate 5 is sleeved on the locking nut 4 and located at the receiving cavity 41, and is fixedly connected to the locking nut 4, and the end face of the cover plate 5 abuts against the other side of the outer ring of the bearing 3; a sealing ring 51 is provided on the outer peripheral wall of the cover plate 5, extending radially outward, and the sealing ring 51 and the third step surface 22 at the inner ring of the synchronous pulley 2 form a labyrinth seal;

[0023] In this design, one side of the inner ring of the gear is limited by a first stepped surface, and one side of the outer ring of the gear is limited by a second stepped surface. The locking nut is fixed to the gear sleeve, and its inner side abuts against the other side of the inner ring of the gear. By adding a cover plate, the cover plate can abut against the other side of the outer ring of the gear. In this way, both sides of the gear are limited by the first stepped surface, the second stepped surface, the cover plate, and the locking nut, respectively, ensuring that the inner and outer rings of the gear will not move axially, thereby ensuring that the gear sleeve and the gear between the synchronous pulleys do not deviate. In addition, a sealing ring is provided radially outward on the outer peripheral wall of the cover plate. The sealing ring and the third stepped surface at the inner ring of the synchronous pulley form a labyrinth seal, preventing impurities from entering the bearing.

[0024] like Figure 1-4 As shown, to illustrate how the cover plate is connected to the synchronous pulley, this utility model uses the cover plate 5 and the locking nut 4 to be fixedly connected by bolts 6.

[0025] like Figure 1-4 As shown, in order to ensure the stability between the synchronous pulley and the gear sleeve, the present invention uses two bearings 3, and a bearing spacer 7 is provided between the two bearings 3. The bearing spacer 7 is sleeved on the gear sleeve 1, and the side of the bearing spacer 7 abuts against the side of the inner ring of the bearing 3 respectively.

[0026] In this design, two bearings are used to ensure that the axis of the synchronous pulley and the axis of the gear sleeve are always horizontal, and to ensure that the distance between the two bearings does not change. A bearing spacer is provided between the two bearings.

[0027] The bearing spacer only restricts the distance between the inner rings of the bearing to remain unchanged. In order to ensure that the distance between the outer rings of the two bearings does not change, the present invention adopts two elastic retaining ring grooves on the inner wall of the synchronous pulley; elastic retaining rings are provided in the elastic retaining ring grooves, and the side of the elastic retaining rings abuts against the side of the corresponding outer ring of the bearing.

[0028] like Figure 1-4 As shown, the inner wall of the synchronous pulley 2 is provided with two elastic retaining ring grooves 23, and elastic retaining rings 8 are provided in the elastic retaining ring grooves 23. The elastic retaining rings 8 abut against the outer ring of the bearing 3. In this way, the two elastic retaining rings 8 cooperate with the bearing spacer ring 7 to limit the distance between the two bearings 3 from changing.

[0029] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An integrated automatic winding planetary transmission head for motors with a labyrinth seal, characterized in that, include: The gear sleeve has a first stepped surface on its outer peripheral wall; The synchronous pulley, which is fitted outside the gear sleeve, has a second stepped surface on its inner wall; The bearing is disposed between the gear sleeve and the synchronous belt pulley, with one side of its inner ring abutting against the first stepped surface and one side of its outer ring abutting against the second stepped surface. A locking nut is fixedly connected to the outer peripheral wall of the gear sleeve, located on the other side of the bearing, with its end face abutting against the other side of the inner ring of the bearing, and a receiving cavity is provided at the end face of the locking nut; A cover plate, which is fitted onto the locking nut and located in the receiving cavity, is fixedly connected to the locking nut, and the end face of the cover plate abuts against the other side of the outer ring of the bearing; A sealing ring is provided on the outer peripheral wall of the cover plate, extending radially outward. The sealing ring and the third step surface at the inner ring of the synchronous pulley form a labyrinth seal.

2. The integrated automatic winding planetary transmission head for motors with a labyrinth seal according to claim 1, characterized in that, The cover plate and the locking nut are fixedly connected by bolts.

3. The integrated automatic winding planetary transmission head for motors with a labyrinth seal according to claim 1, characterized in that, The bearing is provided in two parts, and a bearing spacer is provided between the two bearings. The bearing spacer is sleeved on the gear sleeve, and the side of the bearing spacer abuts against the side of the inner ring of the bearing.

4. The integrated automatic winding planetary transmission head for motors with a labyrinth seal according to claim 3, characterized in that, The inner wall of the synchronous belt pulley is provided with two elastic retaining ring grooves; An elastic retaining ring is provided in the elastic retaining ring groove, and the side of the elastic retaining ring abuts against the side of the corresponding outer ring of the bearing.

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