Multi-linkage gearbox with high sealing performance

Abstract

The utility model discloses a multi-linkage gear box with strong sealing performance, which relates to the technical field of gear boxes and comprises a gear box body, a box cover is mounted at the top of the gear box body through bolts, an input shaft is arranged on the outer wall of the gear box body, and an adjusting rod is arranged to adjust the sealing performance of the gear box body. When the connecting part of the gearbox output shaft and the gearbox is effectively sealed and used through the sealing ring, in order to improve the sealing and protecting stability of the sealing ring on the connecting part and prevent the situation that the sealing ring is loosened due to vibration caused by long-time rotating motion of the output shaft, the first bolt can be loosened after the sealing ring is inserted, and the sealing ring can be prevented from being loosened. Meanwhile, after the adjusting rod is tightly attached to the outer wall of the sealing ring, the first bolt is rotated again, and the first bolt slides into the adjusting groove through the limiting effect of the first nut; and the effect of clamping and sealing stability of the adjusting rod to the sealing ring is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of gearboxes, in particular to a multi-connected gearbox with strong sealing performance. Background Technique

[0002] The gearbox is an important mechanical component widely used in wind power generation units. Its main function is to transmit the power generated by the wind turbine under the action of wind to the generator and make it obtain the corresponding rotation speed. Usually, the rotation speed of the wind turbine is very low, far from reaching the rotation speed required for the generator to generate electricity. It must be realized through the speed-increasing effect of the gear pair in the gearbox. Therefore, the gearbox is also called a speed-increasing box.

[0003] For example, the gearbox with strong sealing performance disclosed in the publication number CN207893111U at least includes: a gearbox body, an upper top cover is installed on the top of the gearbox body, an oil supply device is fixedly installed on the surface of the upper top cover, an input shaft and an output shaft are respectively arranged on one side of the gearbox body, and the axes of the input shaft and the output shaft are on the same straight line. Shaft seals are embedded on the surfaces of the input shaft and the output shaft. A high-compression-rate seal ring is arranged in the upper top cover, which is beneficial to isolating air and water vapor from entering the inside of the gearbox through the gap between the upper top cover and the gearbox body, and improving the overall airtightness; shaft seals are embedded at the surface connection parts of the input shaft, the output shaft and the gearbox body, which is beneficial to the tight connection between the input shaft, the output shaft and the gearbox body, and improving the overall airtightness; an oil supply device is arranged, on the one hand, it is beneficial to seal through the oil fluid and improve the sealing performance, and on the other hand, it is beneficial to lubricate the input shaft and the output shaft with the oil fluid to avoid the problem that the working efficiency of the input shaft and the output shaft is reduced due to friction.

[0004] However, when the multi-connected gearbox with strong sealing performance is in use, although the connection part of the output end can be sealed by means of a seal ring, the positioning effect after the insertion of the seal ring is not high, which easily causes the output end of the gearbox to rotate for a long time, resulting in the synchronous vibration of the seal ring and causing the seal ring to loosen, affecting the sealing and protection stability effect of the seal ring on the output end.

[0005] Therefore, in view of this, research and improvement are carried out on the existing structural deficiencies, and a multi-connected gearbox with strong sealing performance is proposed. Content of the Utility Model

[0006] The purpose of the utility model is to provide a multi-connected gearbox with strong sealing performance to solve the problem of low positioning effect after the insertion of the seal ring proposed in the above background technique.

[0007] To achieve the above object, the present utility model provides the following technical solution: a multi-connected gearbox with strong sealing performance, including a gearbox body, the top of the gearbox body is installed with a box cover through bolts, the outer wall of the gearbox body is provided with an input shaft, the outer wall of the input shaft is fixedly connected with an input gear, the outer wall of the input gear is engaged with a connecting gear rotatably connected to the inner wall of the gearbox, the outer wall of the connecting gear is engaged with an output gear rotatably connected to the inner wall of the gearbox, the rotation center of the output gear is fixedly connected with an output shaft extending to the outer wall of the gearbox, the outer wall of the output shaft is inserted with a connecting sealing ring that fits against the outer wall of the gearbox, the outer wall of the box cover is fixedly connected with a connecting plate, the outer wall of the connecting plate is slidably connected with an adjusting rod that fits against the side wall of the connecting sealing ring, the outer wall of the connecting plate is provided with a first nut, the inner wall of the first nut is threadedly connected with a first bolt that slidably connects to the outer wall of the adjusting rod, and an adjusting groove is formed at the connecting portion of the outer wall of the adjusting rod and the first bolt.

[0008] Further, the bottom of the adjusting rod is snap-connected with a plug block, a slot is formed at the connecting portion of the bottom of the adjusting rod and the plug block, the outer wall of the plug block is fixedly connected with a wiping block that fits against the outer wall of the output shaft, the outer wall of the adjusting rod is provided with a second nut, the inner wall of the second nut is threadedly connected with a second bolt that slidably connects to the outer wall of the plug block, and a clamping groove is formed at the connecting portion of the outer wall of the plug block and the second bolt.

[0009] Further, the adjusting rods are symmetrically arranged on both sides of the connecting sealing ring.

[0010] Further, the adjusting groove is formed in a "one" shape on the outer wall of the adjusting rod.

[0011] Further, the inner wall contour of the adjusting groove is larger than the outer wall contour of the first bolt.

[0012] Further, the wiping blocks and the adjusting rods are arranged in a one-to-one correspondence.

[0013] Further, the inner wall contour of the slot is adapted to the outer wall contour of the plug block.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] 1. By providing an adjusting rod, when effectively sealing the connection part between the output shaft of the gearbox and the gearbox through a sealing ring, in order to improve the sealing stability of the sealing ring for the connection part and prevent the sealing ring from vibrating and loosening due to the long-term rotational movement of the output shaft, after inserting the sealing ring, the first bolt can be loosened to make the first bolt slide out of the adjusting groove, driving the adjusting rod to closely fit the outer wall of the sealing ring. At the same time, after the adjusting rod closely fits the outer wall of the sealing ring, the first bolt is rotated again, and through the limiting effect of the first nut, the first bolt slides into the adjusting groove, achieving the effect of the adjusting rod clamping and sealing the sealing ring stably;

[0016] 2. By providing an inserting block, when sealing and protecting the connection part of the output shaft through a sealing ring, in order to improve the wiping and cleaning effect on the lubricating oil that may seep out, the inserting block can be inserted into the bottom of the adjusting rod through the connection of the inserting slot, and the second bolt is rotated. Through the limiting effect of the second nut, the second bolt slides into the clamping slot, achieving the effect of conveniently clamping and replacing the wiping block. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of the gearbox;

[0018] Figure 2 is a schematic diagram of the internal structure of the gearbox;

[0019] Figure 3 is a schematic diagram of the connection structure between the adjusting rod and the connecting sealing ring;

[0020] Figure 4 is an exploded structural schematic diagram of the connection between the inserting block and the inserting slot.

[0021] In the figure: 1, gearbox body; 2, box cover; 3, input shaft; 4, input gear; 5, connecting gear; 6, output gear; 7, output shaft; 8, connecting sealing ring; 9, connecting plate; 10, adjusting rod; 11, first nut; 12, first bolt; 13, adjusting groove; 14, inserting block; 15, wiping block; 16, inserting slot; 17, second nut; 18, second bolt; 19, clamping slot. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Embodiment 1: As Figures 1-3As shown in the figure, a multi-connected gearbox with strong sealing performance includes a gearbox body 1. The top of the gearbox body 1 is installed with a box cover 2 through bolts. The outer wall of the gearbox body 1 is provided with an input shaft 3. An input gear 4 is fixedly connected to the outer wall of the input shaft 3. A connecting gear 5 that is rotationally connected to the inner wall of the gearbox body 1 is meshed with the outer wall of the input gear 4. An output gear 6 that is rotationally connected to the inner wall of the gearbox body 1 is meshed with the outer wall of the connecting gear 5. An output shaft 7 extending to the outer wall of the gearbox body 1 is fixedly connected to the rotation center of the output gear 6. A connecting sealing ring 8 that fits with the outer wall of the gearbox body 1 is inserted on the outer wall of the output shaft 7. A connecting plate 9 is fixedly connected to the outer wall of the box cover 2. An adjusting rod 10 that fits with the side wall of the connecting sealing ring 8 is slidably connected to the outer wall of the connecting plate 9. A first nut 11 is arranged on the outer wall of the connecting plate 9. A first bolt 12 that is slidably connected to the outer wall of the adjusting rod 10 is threadedly connected to the inner wall of the first nut 11. An adjusting groove 13 is opened at the connecting part of the outer wall of the adjusting rod 10 and the first bolt 12.

[0024] Furthermore, the adjusting rods 10 are symmetrically arranged on both sides of the connecting sealing ring 8, which is beneficial to improve the installation and use stability of the sealing ring by symmetrically arranging the adjusting rods 10 on both sides of the connecting sealing ring 8.

[0025] Furthermore, the adjusting groove 13 is opened in a "one" shape on the outer wall of the adjusting rod 10, which is beneficial to effectively adjust the descending distance of the adjusting rod 10 by opening the adjusting groove 13 in a "one" shape on the outer wall of the adjusting rod 10.

[0026] Furthermore, the inner wall contour of the adjusting groove 13 is larger than the outer wall contour of the first bolt 12, which is beneficial to achieve the effect of stable sealing use at the output end of the gearbox by setting the inner wall contour of the adjusting groove 13 to be larger than the outer wall contour of the first bolt 12.

[0027] Embodiment 2: As Figure 1 、 Figure 2 and Figure 4As shown in the figure, a multi - joint gearbox with strong sealing performance proposed by the utility model. Compared with the first embodiment, as another implementation mode of the utility model, a plug 14 is snap - connected to the bottom of the adjusting rod 10. A slot 16 is opened at the connecting part between the bottom of the adjusting rod 10 and the plug 14. A wiping block 15 that fits the outer wall of the output shaft 7 is fixedly connected to the outer wall of the plug 14. A second nut 17 is arranged on the outer wall of the adjusting rod 10. The inner wall of the second nut 17 is thread - connected with a second bolt 18 that is slidably connected to the outer wall of the plug 14. A clamping groove 19 is opened at the connecting part between the outer wall of the plug 14 and the second bolt 18. During operation, by setting the plug 14, when sealing and protecting the connecting part of the output shaft 7 through a sealing ring, in order to improve the wiping and cleaning effect of the possibly leaked lubricating oil, the plug 14 can be inserted into the bottom of the adjusting rod 10 through the connection of the slot 16, and the second bolt 18 is rotated. Through the limiting effect of the second nut 17, the second bolt 18 slides into the clamping groove 19, achieving the effect of conveniently clamping and replacing the wiping block 15 for use.

[0028] Furthermore, the wiping block 15 and the adjusting rod 10 are arranged in a one - to - one correspondence. This is beneficial for the wiping block 15 and the adjusting rod 10 to be arranged in a one - to - one correspondence to play a role in wiping the sealing ring in all directions.

[0029] Furthermore, the inner wall contour of the slot 16 and the outer wall contour of the plug 14 are adapted to each other. This is beneficial for the inner wall contour of the slot 16 and the outer wall contour of the plug 14 to be adapted to each other to achieve the effect of conveniently clamping and replacing the wiping block 15 for use.

[0030] Working principle: When using this multi - joint gearbox with strong sealing performance, first, when effectively sealing the connecting part between the output shaft 7 of the gearbox and the gearbox through a sealing ring, in order to improve the sealing stability of the sealing ring for the connecting part and prevent the sealing ring from vibrating and loosening due to the long - term rotational movement of the output shaft 7, after inserting the sealing ring, the first bolt 12 can be loosened so that the first bolt 12 slides out of the adjusting groove 13, driving the adjusting rod 10 to closely fit the outer wall of the sealing ring. At the same time, after the adjusting rod 10 closely fits the outer wall of the sealing ring, the first bolt 12 is rotated again. Through the limiting effect of the first nut 11, the first bolt 12 slides into the adjusting groove 13, achieving the effect of the adjusting rod 10 clamping and sealing the sealing ring stably.

[0031] Finally, when sealing and protecting the connecting part of the output shaft 7 through a sealing ring, in order to improve the wiping and cleaning effect of the possibly leaked lubricating oil, the plug 14 can be inserted into the bottom of the adjusting rod 10 through the connection of the slot 16, and the second bolt 18 is rotated. Through the limiting effect of the second nut 17, the second bolt 18 slides into the clamping groove 19, achieving the effect of conveniently clamping and replacing the wiping block 15 for use.

[0032] This is the working principle of a multi - joint gearbox with strong sealing performance.

[0033] The embodiments of the present utility model are given for purposes of illustration and description, and are not exhaustive or limit the present utility model to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to better explain the principles and practical applications of the present utility model, and to enable those of ordinary skill in the art to understand the present utility model and design various embodiments with various modifications suitable for specific purposes.

Claims

1. A multi-gearbox with strong sealing performance, comprising a gearbox body (1), characterized in that: A case cover (2) is installed on the top of the gear case (1) by means of bolts; an input shaft (3) is arranged on the outer wall of the gear case (1); an input gear (4) is fixedly connected to the outer wall of the input shaft (3); a connecting gear (5) is meshed with the outer wall of the input gear (4) and is rotatably connected to the inner wall of the gear case (1); an output gear (6) is meshed with the outer wall of the connecting gear (5) and is rotatably connected to the inner wall of the gear case (1); an output shaft (7) extending to the outer wall of the gear case (1) is fixedly connected to the rotation center of the output gear (6); and the output shaft (7) is ) is plugged into the outer wall of the gear box body (1), the outer wall of the box cover (2) is fixedly connected to a connecting plate (9), the outer wall of the connecting plate (9) is slidably connected to an adjusting rod (10) that is in contact with the side wall of the connecting seal ring (8), the outer wall of the connecting plate (9) is provided with a first nut (11), the inner wall of the first nut (11) is threadedly connected to a first bolt (12) that is slidably connected to the outer wall of the adjusting rod (10), and an adjusting groove (13) is provided at the connection portion between the outer wall of the adjusting rod (10) and the first bolt (12).

2. A multi-gearbox with strong sealing performance according to claim 1, characterized in that: The bottom of the adjusting rod (10) is snap-connected with an insert block (14); a slot (16) is provided at the connection position between the bottom of the adjusting rod (10) and the insert block (14); a wiping block (15) which is in contact with the outer wall of the output shaft (7) is fixedly connected to the outer wall of the insert block (14); a second nut (17) is provided on the outer wall of the adjusting rod (10); a second bolt (18) which is slidably connected to the outer wall of the insert block (14) is threadedly connected to the inner wall of the second nut (17); and a slot (19) is provided at the connection position between the outer wall of the insert block (14) and the second bolt (18).

3. A multi-gearbox with strong sealing performance according to claim 1, characterized in that: The adjusting rod (10) is symmetrically arranged on both sides of the connecting sealing ring (8).

4. A multi-gearbox with strong sealing performance according to claim 1, characterized in that: The adjusting groove (13) is formed in a straight line and is arranged on the outer wall of the adjusting rod (10).

5. The multi-gearbox with strong sealing performance according to claim 1, characterized in that: The inner wall profile of the adjustment groove (13) is larger than the outer wall profile of the first bolt (12).

6. A multi-gearbox with strong sealing performance according to claim 2, characterized in that: The wiping block (15) and the adjusting rod (10) are arranged in a one-to-one correspondence.

7. A multi-gearbox with strong sealing performance according to claim 2, characterized in that: The inner wall contour of the slot (16) is adapted to the outer wall contour of the insert block (14).

Images