Structure capable of being conveniently replaced and used for adjusting center distance of gear pair

Abstract

The utility model relates to the technical field of gear boxes, in particular to a structure capable of being replaced conveniently and used for adjusting the center distance of a gear pair, which comprises an upper box body and a lower box body arranged at the lower end of the upper box body, and an intermediate shaft supporting seat is arranged in the lower box body through a bolt II; through the detachable arrangement of the intermediate shaft supporting seats, the intermediate shaft supporting seats are convenient to replace and install, different intermediate shaft supporting seats can be machined according to different height differences, the requirements of different height differences are met by replacing the intermediate shaft supporting seats, inclined holes which are coaxial with the intermediate shaft rod and have the angle of alpha are machined in the intermediate shaft supporting seats, and the height difference of the intermediate shaft rod is adjusted. Flexural deformation of the intermediate shaft rod can be avoided, and then interaction force and counter-acting force between the intermediate shaft rod and the intermediate shaft supporting seat due to flexural deformation are avoided; and the influence of flexural deflection of the intermediate shaft rod on the installation and working states of the sliding bearing can be avoided, the requirement for the strength of the intermediate shaft supporting seat is lowered, and finally the overall performance of the gearbox is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of gear boxes, and in particular to a structure which can be conveniently replaced and used for adjusting the center distance of gear pairs. Background Art

[0002] For the reducer gearbox, due to the deviation between the actual production product and the theoretical value, different deviation tests are required to verify and evaluate the product performance. For example, the Chinese patent with application number CN201520239065.1 discloses a double-tooth loading test device for gears with load-balancing function, including a loading structure and a supporting structure; the loading structure includes a stepped joint inserted into the nut of the upper bed, a dovetail base fixed to the bottom of the stepped joint, and left and right adjustable brackets installed in the longitudinal guide groove on the bottom surface of the dovetail base, and a loading plate is fixedly installed on the bottom surface of the left and right adjustable brackets; the supporting structure is composed of a shaft system wearing part and a basic support part, which realizes the double-tooth evenly distributed loading of the gear bending fatigue strength test and improves the accuracy of the test results. However, in actual test, the height difference at both ends of the intermediate shaft is achieved by self-adjusting by means of a small swing of the V-shaped bracket. This method will cause a certain degree of flexural deformation of the intermediate shaft and generate great stress on the V-shaped bracket, resulting in a decrease in the oil proportion of the oil circuit in the intermediate shaft area. The friction and wear between the gear pairs affected by heat dissipation and lubrication will affect the overall performance of the gearbox. Utility Model Content

[0003] In view of this, the purpose of the utility model is to propose a structure that can be easily replaced to adjust the center distance of the gear pair, so as to solve the technical problem that the height difference between the two ends of the intermediate shaft in the prior art will cause a certain degree of flexural deformation of the intermediate shaft and generate great stress on the V-shaped bracket.

[0004] Based on the above-mentioned purpose, the utility model provides a structure that can be easily replaced for adjusting the center distance of the gear pair, including an upper box body and a lower box body arranged at the lower end of the upper box body, the interior of the lower box body is provided with an intermediate shaft support seat through bolt two, and the lower box body is also provided with a cylindrical pin for positioning the intermediate shaft support seat, the cylindrical pin is inserted into the intermediate shaft support seat, the intermediate shaft support seat is detachable, and an inclined hole is also arranged in the middle of the intermediate shaft support seat, an intermediate shaft rod is connected to the intermediate shaft support seat, a sliding bearing is installed on the intermediate shaft rod, and the gear in the box is installed on the sliding bearing.

[0005] Furthermore, the intermediate shaft support seat includes an intermediate bearing seat and an intermediate bearing cover, and the inclined hole is coaxially arranged with the intermediate shaft rod.

[0006] Furthermore, the intermediate bearing seat and the intermediate bearing cover are connected by bolts.

[0007] Furthermore, the upper box body and the lower box body form a reducer housing, the gear inside the box is meshedly connected with a large gear, and the gear inside the box and the large gear are both arranged in the reducer housing.

[0008] Furthermore, the intermediate shaft rod and the intermediate shaft support seat are in interference connection.

[0009] The beneficial effects of the utility model are as follows: a structure that can be conveniently replaced to adjust the center distance of the gear pair is adopted by the utility model, and the intermediate shaft support seat can be disassembled. Firstly, it is convenient to replace and install, and secondly, different intermediate shaft support seats can be processed according to different height differences. By replacing the intermediate shaft support seat, the requirements of different height differences can be achieved. The intermediate shaft support seat is processed with an inclined hole coaxial with the intermediate shaft rod at an angle of α, which can avoid the intermediate shaft rod from bending and deformation, thereby avoiding the interaction force and reaction force between the intermediate shaft rod and the intermediate shaft support seat caused by the bending and deformation; it can also avoid the influence of the bending and deformation of the intermediate shaft rod on the installation and working state of the sliding bearing, and reduce the strength requirement for the intermediate shaft support seat, ultimately ensuring the overall performance of the gear box. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0011] Figure 1 It is a schematic diagram of the internal structure of the utility model;

[0012] Figure 2 It is an internal side view of the utility model;

[0013] Figure 3 This is a structural schematic diagram of a loading test intermediate shaft support seat in the utility model;

[0014] Figure 4 It is a structural schematic diagram of another intermediate shaft support seat for loading test in the utility model.

[0015] The markings in the figure are:

[0016] 1. Upper box body; 2. Lower box body; 3. Intermediate bearing cover; 4. Bolt 1; 5. Intermediate bearing seat; 6. Bolt 2; 7. Cylindrical pin; 8. Gear inside the box; 9. Sliding bearing; 10. Intermediate shaft. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0018] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0019] The embodiment of the utility model provides a structure that can be easily replaced to adjust the center distance of the gear pair, such as Figure 1-4 As shown, it includes an upper box body 1 and a lower box body 2 arranged at the lower end of the upper box body 1, an intermediate shaft support seat is arranged inside the lower box body 2 through a bolt 6, and a cylindrical pin 7 for positioning the intermediate shaft support seat is also arranged on the lower box body 2, and the cylindrical pin 7 is inserted on the intermediate shaft support seat. The intermediate shaft support seat is detachable, and an inclined hole is also arranged in the middle of the intermediate shaft support seat. An intermediate shaft rod 10 is connected to the intermediate shaft support seat, a sliding bearing 9 is installed on the intermediate shaft rod 10, and an internal gear 8 is installed on the sliding bearing 9, and the intermediate shaft support seat is located inside the reducer housing.

[0020] In this embodiment, the intermediate shaft support seat includes an intermediate bearing seat 5 and an intermediate bearing cover 3. The inclined hole is coaxially arranged with the intermediate shaft rod 10. The intermediate bearing seat 5 and the intermediate bearing cover 3 are connected by bolts 4. The intermediate shaft support seat is processed with an inclined hole coaxial with the intermediate shaft rod 10 at an angle of α, which can avoid the intermediate shaft rod 10 from bending and deformation, thereby avoiding the interaction force and reaction force between the intermediate shaft rod 10 and the intermediate shaft support seat caused by the bending and deformation; it can also avoid the influence of the bending and deformation of the intermediate shaft rod 10 on the installation and working state of the sliding bearing 9, and reduce the strength requirement of the intermediate shaft support seat; the intermediate shaft support seat can be detached and arranged, firstly, it is convenient to replace and install, and secondly, different intermediate shaft support seats can be processed according to different height differences, and different height difference requirements can be achieved by replacing the intermediate shaft support seat.

[0021] In this embodiment, when the intermediate shaft support seat needs to be replaced, the upper housing 1 and the lower housing 2 are first disassembled, and then the intermediate shaft support seat to be replaced is removed by removing the bolts 1 4 connecting the intermediate bearing seat 5 and the intermediate bearing cover 3, and the bolts 2 6 connecting the lower housing 2 and the intermediate shaft support seat, and then the cylindrical pin 7 is used to achieve the positioning requirement of the intermediate shaft support seat to be replaced, and then the corresponding bolts 1 4 and bolts 2 6 are tightened again, and finally the upper housing 1 and the lower housing 2 are assembled. The center distance of the gear pair can be adjusted by replacing different intermediate shaft support seats.

[0022] In this embodiment, the upper housing 1 and the lower housing 2 form a reducer housing, the gear 8 inside the housing is meshed with a large gear, the gear 8 inside the housing and the large gear are both arranged in the reducer housing, and the intermediate shaft 10 is interference connected with the intermediate shaft support seat.

[0023] In addition, holes with larger diameters are reserved at positions corresponding to the intermediate shaft 10 on the upper housing 1 and the lower housing 2 , and the angle change of the intermediate shaft 10 will not affect the upper housing 1 and the lower housing 2 .

[0024] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0025] The utility model is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. A structure that can be easily replaced and used to adjust the center distance of a gear pair, comprising an upper box body (1) and a lower box body (2) arranged at the lower end of the upper box body (1), characterized in that: An intermediate shaft support seat is provided inside the lower housing (2) through bolt 2 (6). A cylindrical pin (7) for positioning the intermediate shaft support seat is also provided on the lower housing (2). The cylindrical pin (7) is inserted into the intermediate shaft support seat. The intermediate shaft support seat is detachable. An inclined hole is also provided in the middle of the intermediate shaft support seat. An intermediate shaft rod (10) is connected to the intermediate shaft rod (10). A sliding bearing (9) is installed on the intermediate shaft rod (10). An internal gear (8) is installed on the sliding bearing (9).

2. A structure that can be easily replaced to adjust the center distance of a gear pair according to claim 1, characterized in that: The intermediate shaft support seat comprises an intermediate bearing seat (5) and an intermediate bearing cover (3), and the inclined hole is coaxially arranged with the intermediate shaft rod (10).

3. The structure for adjusting the center distance of a gear pair that can be easily replaced according to claim 2 is characterized in that: The intermediate bearing seat (5) and the intermediate bearing cover (3) are connected via bolt one (4).

4. The structure for adjusting the center distance of a gear pair that can be easily replaced according to claim 1 is characterized in that: The upper housing (1) and the lower housing (2) form a reducer housing, the gear (8) inside the housing is meshedly connected with a large gear, and the gear (8) inside the housing and the large gear are both arranged in the reducer housing.

5. The structure for adjusting the center distance of a gear pair that can be easily replaced according to claim 1 is characterized in that: The intermediate shaft rod (10) and the intermediate shaft support seat are in interference connection.

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