One-way transmission gear box

Abstract

The utility model relates to a one-way transmission gear box which comprises a gear box shell, and an input shaft hole, a first output shaft hole and a second output shaft hole are formed in the gear box shell. A second bearing and a second bevel gear are mounted at the first output shaft hole, a second bearing and a compensation sleeve are mounted at the second output shaft hole, and the thickness of the compensation sleeve is equal to that of the second bevel gear; an output shaft is rotationally installed between the two second bearings, a connecting shaft is fixed to one end of the output shaft, and when the connecting shaft is located at the second output shaft hole, a cover plate is installed at the first output shaft hole; when the direction of the output shaft is turned to enable the connecting shaft to be located at the first output shaft hole, a cover plate is installed at the second output shaft hole. The two output shaft holes capable of being closed are formed, and the installation position of the output shaft is compensated through the compensation sleeve, so that gearboxes in different output directions can be obtained by assembling the same gearbox shell and a transmission mechanism, the production cost is reduced, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gear box technical field especially relates to a one-way transmission gear box. BACKGROUND

[0002] Gear box is a kind of power transmission mechanism, is widely used in the mechanism of transmission power and movement.The existing one-way transmission gear box is mostly fixed structure, need to produce corresponding gear box shell according to the transmission direction of gear box, both increase the manufacturing cost of one-way transmission gear box, and reduce production efficiency.

[0003] Based on the above technical problems, the present application provides a one-way transmission gear box. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a one-way transmission gear box to solve the technical problems mentioned in the background art, and the utility model aims at realizing the following technical scheme:

[0005] A one-way transmission gear box, comprising a gear box shell, an input shaft hole, a first output shaft hole and a second output shaft hole are formed in the gear box shell;An input shaft is installed at the input shaft hole through a first bearing, and one end of the input shaft in the gear box shell is fixed with a first bevel gear;A second bearing and a second bevel gear are installed at the first output shaft hole, a second bearing and a compensation sleeve are installed at the second output shaft hole, the second bevel gear is meshed with the first bevel gear, the second bevel gear and the compensation sleeve are located between the two second bearings, and the axial thickness of the compensation sleeve is equal to the axial thickness of the second bevel gear;An output shaft is rotatably installed between the two second bearings, and the output shaft is provided with a first step and a second step at both ends, and the length of the first step and the second step is equal to the sum of the axial thickness of the second bearing and the second bevel gear;A connecting shaft is fixed to one end of the output shaft close to the second step, the connecting shaft extends out of the gear box shell, and when the connecting shaft is located at the second output shaft hole, a cover plate is installed at the first output shaft hole;When the direction of the output shaft is adjusted so that the connecting shaft is located at the first output shaft hole, a cover plate is installed at the second output shaft hole.

[0006] Further, oil seals are installed at the connecting shaft and the input shaft.

[0007] Further, the first bearing is an angular contact bearing, and the first bearing is at least two.

[0008] Further, the second bearing is a tapered roller bearing.

[0009] Further, the connecting shaft and the output shaft are integrally formed, and an external spline is formed on the peripheral surface of the connecting shaft.

[0010] Further, the first step and the second step are respectively provided with a key groove, and the second bevel gear is fixed at the first step or the second step through a connecting key.

[0011] The technical scheme provided by the embodiment of the application has at least the following technical effects or advantages:

[0012] By setting two closable output shaft holes and using the compensation sleeve to compensate the mounting position of the output shaft, the same set of gear box shell and transmission mechanism can be used to assemble gear boxes with different output directions, thereby reducing the production cost and improving the production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0013] The drawings constituting a part of the specification use to provide further understanding of the present application, the schematic embodiments of the present application and the explanations thereof are used to explain the present application, and do not constitute improper limitation on the present application.

[0014] Figure 1 It is a perspective view of the embodiment 1 of the present application;

[0015] Figure 2 It is a structural schematic view of the embodiment 1 of the present application;

[0016] Figure 3 It is a structural schematic view of the output shaft of the present application;

[0017] Figure 4 It is a perspective view of the embodiment 2 of the present application;

[0018] Figure 5 It is a structural schematic view of the embodiment 2 of the present application.

[0019] In the drawings, 1 is a gear box shell, 11 is an input shaft hole, 12 is a first output shaft hole, 13 is a second output shaft hole, 14 is a flange, 15 is a plug, 16 is a cover plate, 2 is a first bearing, 3 is an input shaft, 4 is a first bevel gear, 5 is an oil seal, 6 is an output shaft, 61 is a first step, 62 is a second step, 63 is a connecting shaft, 7 is a second bearing, 8 is a second bevel gear, and 9 is a compensation sleeve. DETAILED DESCRIPTION

[0020] In order to further explain the technical means and effects adopted by the present application to achieve the predetermined application purposes, the specific embodiments, structures, features and effects according to the present application are described in detail as follows by combining with the drawings and the preferred embodiments.

[0021] Embodiment 1

[0022] As Figures 1-3The single direction transmission gear box shown comprises a gear box shell 1, the gear box shell 1 is a T-shaped structure welded by tubes, the lower side of the gear box shell 1 is provided with an input shaft hole 11, and a flange plate 14 is welded and fixed at the input shaft hole 11. An input shaft 3 is rotatably installed at the input shaft hole 11 through two first bearings 2, and the upper end of the input shaft 3 is fixed with a first bevel gear 4. The gear box shell 1 is connected with a driving mechanism through the flange plate 14, so that the output shaft of the driving mechanism is connected with the input shaft 3 of the gear box, and the input shaft 3 of the gear box is driven to rotate. The driving mechanism can be a motor or an internal combustion engine, and the first bearing 2 is preferably an angular contact bearing which can bear radial load and axial load at the same time and can work at a high speed.

[0023] As shown in the drawings, Figures 1-3 The left side of the gear box shell 1 is provided with a first output shaft hole 12, the right side of the gear box shell 1 is provided with a second output shaft hole 13, and the first output shaft hole 12 and the second output shaft hole 13 are coaxially arranged. The output shaft 6 is rotatably installed between the first output shaft hole 12 and the second output shaft hole 13. The two ends of the output shaft 6 are respectively provided with a first step 61 and a second step 62, the lengths of the first step 61 and the second step 62 are equal, and the first step 61 and the second step 62 are symmetrically provided with key grooves near the middle side of the output shaft 6. The end of the output shaft 6 near the second step 62 is integrally formed with a connecting shaft 63, and the connecting shaft 63 is provided with external splines in the circumferential direction.

[0024] As shown in the drawings, Figure 2 , Figure 3 The first step 61 of the output shaft 6 is installed at the first output shaft hole 12 of the gear box shell 1 through the second bearing 7 and the second bevel gear 8, and the second step 62 of the output shaft 6 is installed at the second output shaft hole 13 of the gear box shell 1 through the second bearing 7 and the compensation sleeve 9, and the connecting shaft 63 extends out of the gear box shell 1 through the second output shaft hole 13. The second bevel gear 8 is fixed with the key groove at the first step 61 of the output shaft 6 through the connecting key, and the second bevel gear 8 is engaged with the first bevel gear 4. When the input shaft 3 drives the first bevel gear 4 to rotate, the first bevel gear 4 drives the second bevel gear 8 to rotate, and then drives the output shaft 6 to rotate. The second bearing 7 is a tapered roller bearing, the tapered roller bearing is provided with a circular truncated cone-shaped roller, the roller is guided by the inner ring large flange, and the design makes the top points of the conical surfaces of the inner ring raceway surface, the outer ring raceway surface and the roller rolling surface intersect at a point on the bearing center line. The two second bearings 7 are oppositely arranged to bear radial load and bidirectional axial load, so that the single direction transmission gear box can bear heavy load and impact load.

[0025] As shown in the drawings, Figure 1 , Figure 2As shown, an oil filling hole is provided on the gearbox housing 1, and a plug 15 is detachably installed at the oil filling hole. A cover plate 16 is installed on the first output shaft hole 12 by bolts. Oil seals 5 are installed at both the connecting shaft 63 and the input shaft 3. During use, lubricating oil is injected into the gearbox housing 1 through the oil filling hole to reduce wear and extend the service life of the gearbox.

[0026] Example 2

[0027] The technical solution of Embodiment 2 is exactly the same as that of Embodiment 1, except that:

[0028] like Figures 3-5 As shown, the first step 61 of the output shaft 6 is mounted at the second output shaft hole 13 of the gearbox housing 1 via the second bearing 7 and the compensation sleeve 9. The second step 62 of the output shaft 6 is mounted at the first output shaft hole 12 of the gearbox housing 1 via the second bearing 7 and the second bevel gear 8. The connecting shaft 63 extends out of the gearbox housing 1 through the first output shaft hole 12. A cover plate 16 is bolted to the second output shaft hole 13 of the gearbox housing 1. This allows for the change of direction of the output shaft 6 of the gearbox.

[0029] The axial length of the compensation sleeve 9 is equal to the axial length of the second bevel gear 8, so that the second bevel gear 8 remains in the same position when the output shaft 6 changes direction.

[0030] The technical solutions provided in this application have at least the following technical effects or advantages:

[0031] By setting two sealable output shaft holes and using a compensation sleeve to compensate for the installation position of the output shaft, gearboxes with different output directions can be assembled using the same gearbox housing and transmission mechanism, thereby reducing production costs and improving production efficiency.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A one-way transmission gearbox, characterised in that, The gear box shell is provided with an input shaft hole, a first output shaft hole and a second output shaft hole; an input shaft is installed at the input shaft hole through a first bearing, and a first bevel gear is fixed at one end of the input shaft in the gear box shell; a second bearing and a second bevel gear are installed at the first output shaft hole, and a second bearing and a compensation sleeve are installed at the second output shaft hole; the second bevel gear is arranged in meshing with the first bevel gear, the second bevel gear and the compensation sleeve are located between the two second bearings, and the axial thickness of the compensation sleeve is equal to the axial thickness of the second bevel gear; an output shaft is rotatably installed between the two second bearings, the output shaft is provided with a first step and a second step at two ends respectively, the length of the first step and the second step is equal to the sum of the axial thickness of the second bevel gear and the second bearing; a connecting shaft is fixed at one end of the output shaft close to the second step, the connecting shaft extends out of the gear box shell, and a cover plate is installed at the first output shaft hole when the connecting shaft is located at the second output shaft hole; when the direction of the output shaft is adjusted so that the connecting shaft is located at the first output shaft hole, a cover plate is installed at the second output shaft hole.

2. A one-way gear box according to claim 1, characterized in that An oil seal is installed at the connecting shaft and the input shaft.

3. A one-way gear box as claimed in claim 1, wherein, The first bearing is an angular contact bearing, and the first bearing is at least two.

4. A one-way gear box as claimed in claim 1, wherein, The second bearing is a tapered roller bearing.

5. A one-way gear box as claimed in claim 1, wherein, The connecting shaft and the output shaft are integrally formed, and an external spline is formed on the peripheral surface of the connecting shaft.

6. A one-way gear box according to claim 1, characterized in that Key grooves are formed at the first step and the second step respectively, and the second bevel gear is fixed at the first step or the second step through a connecting key.

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