Horizontal speed reducer high speed end sealing structure

Abstract

The utility model discloses a high -speed end sealing structure of horizontal speed reducer, related to mechanical drive technical field, including cylinder and high -speed axle, the front end fixed with the transparent cover of cylinder, the inside bushing of cylinder is equipped with compensation component, the end surface of transparent cover is equipped with the sealing component of extending to the inside of cylinder and extruding compensation component radial deformation, high -speed axle extends from the speed reducer and passes from the inside of cylinder, compensation component includes the connecting cylinder of being located in the inside of cylinder and the sleeve joint in the outer wall of high -speed axle. The utility model discloses through the arrangement sealed gap between transmission shaft and speed reducer box, and the conical ring can exert radial pressure in the group of sealing petals, make sealing petals deformation and close to high -speed axle, so as to be in response to the problem of the gap of arc end piece due to wear, so that the sealing effect of the sealing device is good and convenient, can promptly protect the purpose of high -speed axle, also prolongs the service life of sealing element.

Description

Technical Field

[0001] This utility model relates to the field of mechanical transmission technology, specifically a high-speed end sealing structure for a horizontal reducer. Background Technology

[0002] Speed ​​reducers are mechanical transmission devices used in many fields. They come in a wide variety of types, including gear reducers, worm gear reducers, and planetary gear reducers, based on transmission type. They also include various specialized transmission devices, such as speed increasers, speed regulating devices, and various composite transmission devices, including flexible transmission devices. Product service areas cover industries such as metallurgy, coal, building materials, shipbuilding, water conservancy, power, construction machinery, and petrochemicals.

[0003] Most existing speed reducers use a cover and a skeleton oil seal for sealing at the high-speed end. During the operation of the speed reducer, the skeleton oil seal is always in contact with the high-speed shaft and rotates at high speed relative to it. Therefore, the machining of the high-speed shaft and the installation of the skeleton oil seal have high requirements. After long-term operation, the skeleton oil seal and the high-speed shaft will wear to a certain extent, which will reduce the sealing effect. In order to ensure the sealing effect, the equipment must be shut down and the oil seal replaced and wear-resistant sleeves added. It may even be necessary to replace the high-speed shaft, which will result in significant time and economic losses. Therefore, a sealing structure for the high-speed end of a horizontal speed reducer is proposed. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a high-speed end sealing structure for a horizontal reducer to solve the technical problems mentioned in the background.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-speed end sealing structure for a horizontal reducer, comprising a cylinder and a high-speed shaft, wherein a through cover is fixed at the front end of the cylinder, a compensation component is sleeved inside the cylinder, and a sealing component is provided on the end face of the through cover extending into the cylinder and compressing the radial deformation of the compensation component, and the high-speed shaft extends out from inside the reducer and passes through the cylinder.

[0006] The compensation component includes a connecting cylinder disposed inside the cylinder and sleeved on the outer wall of the high-speed shaft. Four sets of sealing petals are distributed along the circumference of the end face of the connecting cylinder. An arc-shaped end piece that fits against the outer wall of the high-speed shaft is fixed at the end of each set of sealing petals away from the connecting cylinder. A strip-shaped groove is formed between two adjacent sets of sealing petals. A folding elastic element connecting two adjacent sets of sealing petals is provided in the strip-shaped groove.

[0007] As a preferred technical solution, the four sets of sealing flaps are arranged radially inclined towards the central axis, and the sealing flaps are made of elastic metal material.

[0008] As a preferred technical solution, the sealing assembly includes an outer cylinder sleeved around the four sets of sealing flaps, an inner sleeve connected to the inner cylinder by an internal thread, a conical ring fixed to the end face of the inner sleeve abutting against the outer wall of the curved surface of the four sets of sealing flaps, and an end ring fixed to the end of the outer cylinder on the end face of the cover.

[0009] As a preferred technical solution, the end face of the transparent cover is provided with an annular groove for placing an end ring, and the end ring is detachably connected to the annular groove by bolts.

[0010] As a preferred technical solution, the outer wall of the conical ring is fixed with two sets of arc-shaped blocks that slide inside the cylinder, and a stroke groove is provided at the contact position between the curved inner wall of the cylinder and the arc-shaped blocks.

[0011] As a preferred technical solution, a positioning end ring is fixed at the end of the connecting cylinder away from the sealing flap. Two sets of constraint strips are fixed on the curved outer wall of the positioning end ring, and a groove extending to the end face is opened on the inner wall of the cylinder at the position corresponding to the constraint strips.

[0012] As a preferred technical solution, the outer wall of the high-speed shaft is fitted with a bearing, which is located at the end of the cylinder and fixed inside the reducer box.

[0013] In summary, the present invention has the following main advantages:

[0014] This invention seals the gap between the drive shaft and the reducer housing by setting a sealing flap. At the same time, the conical ring can apply radial compression force to each set of sealing flaps, causing the sealing flaps to deform in the middle and move closer to the high-speed shaft. This addresses the problem of gaps caused by wear of the arc-shaped end plate, making the sealing device effective and convenient. It can protect the high-speed shaft in a timely manner and also extend the service life of the seal. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a cross-sectional view of the present invention;

[0017] Figure 3 This is an unfolded view of the compensation component of this utility model;

[0018] Figure 4 This is a diagram showing the internal structure of the cylindrical body of this utility model;

[0019] Figure 5 This is a first-view structural schematic diagram of the sealing assembly of this utility model;

[0020] Figure 6 This is a second-view structural schematic diagram of the sealing component of this utility model.

[0021] In the diagram: 100, cylinder; 110, cover; 120, high-speed shaft; 130, sealing assembly; 131, end ring; 132, outer cylinder; 133, inner sleeve; 134, conical ring; 135, arc-shaped block; 140, compensation assembly; 141, connecting cylinder; 142, strip groove; 143, sealing flap; 144, folding elastic element; 145, arc-shaped end piece; 146, positioning end ring; 147, constraint strip; 150, bearing; 160, slot; 170, stroke groove. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0023] The embodiments of this utility model will be described below based on its overall structure.

[0024] A sealing structure for the high-speed end of a horizontal reducer, such as Figures 1 to 6 As shown, it includes a cylinder 100 and a high-speed shaft 120. A cover 110 is fixed to the front end of the cylinder 100. A compensation component 140 is sleeved inside the cylinder 100. A sealing component 130 is provided on the end face of the cover 110, extending into the cylinder 100 and compressing the radial deformation of the compensation component 140. The high-speed shaft 120 extends out from the reducer and passes through the cylinder 100.

[0025] The compensation component 140 includes a connecting cylinder 141 disposed inside the cylinder 100 and sleeved on the outer wall of the high-speed shaft 120. Four sets of sealing petals 143 are distributed along the circumferential direction on the end face of the connecting cylinder 141. Each set of sealing petals 143 has an arc-shaped end piece 145 fixed at the end away from the connecting cylinder 141 that fits against the outer wall of the high-speed shaft 120. A strip groove 142 is formed between two adjacent sets of sealing petals 143. A folding elastic member 144 connecting two adjacent sets of sealing petals 143 is provided in the strip groove 142.

[0026] The four sets of sealing flaps 143 are arranged radially inclined towards the central axis, and the sealing flaps 143 are made of elastic metal material;

[0027] The sealing assembly 130 includes an outer cylinder 132 sleeved on the outside of four sets of sealing flaps 143, an inner sleeve 133 connected to the inner cylinder 132 by an internal thread, a conical ring 134 fixed on the end face of the inner sleeve 133 abutting against the curved outer wall of the four sets of sealing flaps 143, and an end ring 131 fixed to the end of the outer cylinder 132 on the end face of the cover 110.

[0028] Two sets of arc-shaped blocks 135 are fixed on the outer wall of the conical ring 134 and slide inside the cylinder 100. A stroke groove 170 is provided at the contact position between the curved inner wall of the cylinder 100 and the arc-shaped blocks 135.

[0029] When the high-speed shaft 120 rotates, its outer wall will wear against the contact point with the sealing petals 143, causing a gap in the outer wall of the high-speed shaft 120. At this time, the reducer can be powered off and stopped, and a rotational force can be applied to the outer cylinder 132. Since the arc block 135 is in the stroke groove 170, it can only move along the axial direction of the cylinder 100. Therefore, the inner sleeve 133 and the conical ring 134 connected to it will not rotate synchronously. When the outer cylinder 132 rotates, the inner sleeve 133 extends out by means of the thread and pushes the conical ring 134 to move. Since the four sets of sealing petals 143 are radially centered and inclined, see the attached manual. Figure 5 It can be seen that the inclination of the four sets of sealing petals 143 is greater as they are closer to the arc-shaped end piece 145. Therefore, the conical ring 134 will squeeze the four sets of sealing petals 143 to continue to deform and converge, so that the arc-shaped end piece 145 is close to the outer wall of the high-speed shaft 120, eliminating the gap and achieving the purpose of sealing. This makes the sealing structure on the reducer have a longer service life and can quickly eliminate the gap on the outer wall of the high-speed shaft 120, thereby indirectly improving the service life of the high-speed shaft 120 and the reducer.

[0030] When the arc-shaped end piece 145 and the four sets of sealing flaps 143 are severely worn, the cover 110 can be removed to take out the cylinder 100, and the connecting cylinder 141 and sealing flaps 143 can be pulled out from the rear end of the cylinder 100 and then reinstalled with brand new ones.

[0031] Please refer to this carefully. Figure 1 The end face of the cover 110 is provided with an annular groove for placing the end ring 131, and the end ring 131 is detachably connected to the annular groove by bolts.

[0032] The end ring 131 facilitates the application of rotational external force to the outer cylinder 132 and the locking of the rotated outer cylinder 132, thereby improving the stability of the sealing flap 143 in sealing the high-speed shaft 120.

[0033] Please refer to this carefully. Figure 4 and Figure 5 A positioning end ring 146 is fixed at the end of the connecting cylinder 141 away from the sealing flap 143. Two sets of constraint strips 147 are fixed on the curved outer wall of the positioning end ring 146. A groove 160 extending to the end face is opened on the inner wall of the cylinder 100 at the position corresponding to the constraint strips 147.

[0034] The constraint strip 147 is inserted into the slot 160 to limit the movement of the connecting cylinder 141 and the four sets of sealing flaps 143, thereby preventing them from rotating synchronously with the high-speed shaft 120 and thus achieving the purpose of sealing.

[0035] The outer wall of the high-speed shaft 120 is fitted with a bearing 150, which is located at the end of the cylinder 100 and fixed inside the reducer box.

[0036] During use, when the high-speed shaft 120 rotates, its outer wall will wear against the contact point with the sealing petals 143, causing a gap in the outer wall of the high-speed shaft 120. At this time, the reducer can be powered off and stopped, and a rotational force can be applied to the outer cylinder 132. Since the arc block 135 is in the stroke groove 170, it can only move along the axial direction of the cylinder 100. Therefore, the inner sleeve 133 and the conical ring 134 connected to it will not rotate synchronously. When the outer cylinder 132 rotates, the inner sleeve 133 extends out by the thread and pushes the conical ring 134 to move. Since the four sets of sealing petals 143 are radially centered and inclined, see the attached instruction manual. Figure 5 It can be seen that the inclination of the four sets of sealing petals 143 is greater as they approach the end of the arc-shaped end piece 145. Therefore, the conical ring 134 will squeeze the four sets of sealing petals 143 to continue to deform and converge, so that the arc-shaped end piece 145 is close to the outer wall of the high-speed shaft 120, eliminating the gap and achieving the purpose of sealing. This makes the sealing structure on the reducer have a longer service life and can quickly eliminate the gap on the outer wall of the high-speed shaft 120, thereby indirectly improving the service life of the high-speed shaft 120 and the reducer. The parts not mentioned in this device are the same as or can be implemented using existing technology.

[0037] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A high-speed end sealing structure for a horizontal reducer, comprising a cylindrical body (100) and a high-speed shaft (120), characterized in that: The front end of the cylinder (100) is fixed with a cover (110), and a compensation component (140) is sleeved inside the cylinder (100). The end face of the cover (110) is provided with a sealing component (130) that extends into the cylinder (100) and compresses the compensation component (140) to radial deformation. The high-speed shaft (120) extends out from the reducer and passes through the cylinder (100). The compensation component (140) includes a connecting cylinder (141) disposed inside the cylinder (100) and sleeved on the outer wall of the high-speed shaft (120). The end face of the connecting cylinder (141) is provided with four sets of sealing petals (143) distributed along its circumference. Each set of sealing petals (143) has an arc-shaped end piece (145) fixed at the end away from the connecting cylinder (141) that fits against the outer wall of the high-speed shaft (120). A strip groove (142) is formed between two adjacent sets of sealing petals (143). A folding elastic element (144) connecting two adjacent sets of sealing petals (143) is provided in the strip groove (142).

2. The high-speed end sealing structure of a horizontal reducer according to claim 1, characterized in that: The four sets of sealing flaps (143) are arranged radially inclined towards the central axis, and the sealing flaps (143) are made of elastic metal material.

3. The high-speed end sealing structure of a horizontal reducer according to claim 1, characterized in that: The sealing assembly (130) includes an outer cylinder (132) sleeved on the outside of four sets of sealing flaps (143), an inner sleeve (133) threaded inside the outer cylinder (132), a conical ring (134) fixed to the end face of the inner sleeve (133) and abutting against the curved outer wall of the four sets of sealing flaps (143), and an end ring (131) fixed to the end of the outer cylinder (132) on the end face of the cover (110).

4. The high-speed end sealing structure of a horizontal reducer according to claim 3, characterized in that: The end face of the cover (110) is provided with an annular groove for placing an end ring (131), and the end ring (131) is detachably connected to the annular groove by bolts.

5. The high-speed end sealing structure of a horizontal reducer according to claim 3, characterized in that: The outer wall of the conical ring (134) is fixed with two sets of arc-shaped blocks (135) that slide inside the cylinder (100). The inner wall of the cylinder (100) is provided with a travel groove (170) at the contact position between the arc-shaped blocks (135).

6. The high-speed end sealing structure of a horizontal reducer according to claim 1, characterized in that: The connecting cylinder (141) is fixed with a positioning end ring (146) at one end away from the sealing flap (143). The curved outer wall of the positioning end ring (146) is fixed with two sets of constraint strips (147). The inner wall of the cylinder (100) is provided with a slot (160) extending to the end face at the position corresponding to the constraint strips (147).

7. The high-speed end sealing structure of a horizontal reducer according to claim 1, characterized in that: The outer wall of the high-speed shaft (120) is fitted with a bearing (150), which is located at the end of the cylinder (100) and fixed inside the reducer box.

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