High-sealing double-curved-surface gear reducer shell

Abstract

The utility model relates to the technical field of speed reducers, and discloses a high-sealing double-curved-surface gear speed reducer shell which comprises a shell body and a protective cover, an external thread seat is arranged on the inner end face of the shell body, an internal thread hole matched with the external thread seat is formed in the side edge of the protective cover, and a locking structure is arranged between the external thread seat and the internal thread hole. The locking structure comprises a groove formed in the side wall of the inner threaded hole, an ejector block arranged in the groove and a buckle base installed on the outer threaded base, the buckle base is matched with the ejector block, and one side of the ejector block is connected with the interior of the groove through a spring. According to the utility model, the external threaded seat and the internal threaded hole are arranged in a matching manner, so that the connection part is reinforced while the shell and the protective cover are assembled, and a gap generated at the connection part of the shell and the protective cover due to machine vibration is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of reducers, in particular to a high-sealing hyperbolic gear reducer housing. Background Art

[0002] The existing hypoid gear reducer housing usually uses a protective cover assembled by screws at one end of the housing to seal and protect the internal gears to prevent dust from entering the reducer and affecting the gear transmission. However, during the operation of the hypoid gear reducer, due to machine vibration, the connection between the housing and the protective cover may become loose, resulting in a gap between the housing and the protective cover and oil leakage. Therefore, it is very necessary to improve the connection between the housing and the protective cover to ensure the firmness of the connection. Utility Model Content

[0003] The utility model aims to provide a high-sealing hypoid gear reducer housing to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-sealed hyperbolic gear reducer housing, comprising a housing and a protective cover, an externally threaded seat is provided on the inner end surface of the housing, an internally threaded hole matching the externally threaded seat is provided on the side of the protective cover, a locking structure is provided between the externally threaded seat and the internally threaded hole, the locking structure comprises a groove provided on the side wall of the internally threaded hole, a top block provided in the groove, and a buckle seat installed on the externally threaded seat, the buckle seat matches the top block, and one side of the top block is connected to the inside of the groove through a spring.

[0005] By means of the matching setting between the external thread seat and the internal thread hole, the connection is reinforced while the shell and the protective cover are assembled, so as to avoid a gap between the shell and the protective cover due to machine vibration. During assembly, the internal thread hole is first aligned with the external thread seat, and then the protective cover is rotated for threaded connection. During the rotation, the top block will abut against the buckle seat, and the protective cover is continued to be rotated to press the buckle seat into the groove. When pressed in, the top block is retreated by the oblique resistance to make way for the buckle seat, and the spring is compressed. When the buckle seat abuts against the inner wall of the groove, the top block returns to its position under the elastic force of the spring to limit the buckle seat, thereby completing the fixation.

[0006] The following improvement is made in the present application: a sliding slope is provided on one end of the buckle seat away from the external thread seat. The top block moves along the sliding slope to make way for the buckle seat more conveniently and quickly, effectively improving efficiency.

[0007] The following improvements are made in the present application: a guide rod is provided inside the spring, a slide groove matching the guide rod is provided on the top block, one end of the guide rod is fixedly connected to the inner wall of the groove, and the other end is plugged into the top block. When the top block moves back to compress the spring, the guide rod goes deep into the slide groove, and the guide rod is provided to regulate the moving route of the top block, thereby ensuring the smooth progress of the limit locking process, and at the same time, effectively improving the connection stability between the spring and the top block.

[0008] The following improvements are made in the present application: a positioning ring seat is provided on the inner end surface of the housing outside the external thread seat, and a positioning groove matching the positioning ring seat is provided on the protective cover. The positioning ring seat and the positioning groove are matched to facilitate assembly.

[0009] The following improvements are made in the present application: baffles are provided on both sides of the shell, and the baffles are fixedly connected to the shell and the protective cover by bolts. The shell, the protective cover and the baffles are arranged in coordination to form a closed space inside, further improving the overall structural strength.

[0010] The following improvement is made in the present application: fasteners are provided at the four outer corners of the connection between the shell and the protective cover. The fasteners are arranged in an L-shaped structure, and their two ends are respectively connected and fixed to the top and side of the shell and the protective cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative labor:

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 This is a schematic diagram of the connection between the housing and the protective cover in the utility model;

[0014] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0015] In the figure: 1, shell; 11, positioning ring seat; 12, baffle; 13, fastener; 2, protective cover; 21, internal thread hole; 22, positioning groove; 3, external thread seat; 4, groove; 41, top block; 411, slide groove; 42, buckle seat; 43, spring; 44, guide rod. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] Example

[0019] like Figure 1-3 As shown, a high-sealed hyperbolic gear reducer housing is mainly composed of a housing 1 and a protective cover 2; wherein, a cavity for placing gears is provided inside the housing 1, and an external threaded seat 3 is integrally formed on the inner end face of the housing 1 located outside the cavity, and a through hole matching the cavity is provided in the middle of the external threaded seat 3; an internal threaded hole 21 matching the external threaded seat 3 is provided on the side of the protective cover 2, and a locking structure is provided between the external threaded seat 3 and the internal threaded hole 21, and through the matching setting between the external threaded seat 3 and the internal threaded hole 21, the connection is reinforced while the housing 1 and the protective cover 2 are assembled, so as to avoid the generation of a gap at the connection between the housing 1 and the protective cover 2 due to machine vibration; a positioning ring seat 11 is provided on the inner end face of the housing 1 located outside the external threaded seat 3, and a positioning groove 22 is provided on the protective cover 2, and the positioning ring seat 11 corresponds to the positioning groove 22 for easy assembly.

[0020] In order to further improve the overall structural strength, baffles 12 are set on both sides of the shell 1, and fasteners 13 are set at the four corners of the outer side of the connection between the shell 1 and the protective cover 2; the baffle 12 is fixedly connected to the shell 1 and the protective cover 2 by bolts, and the fastener 13 is set in an L-shaped structure, and its two ends are respectively connected and fixed to the top and side of the shell 1 and the protective cover 2.

[0021] The locking structure includes a groove 4 opened on the side wall of the internal threaded hole 21, a top block 41 arranged in the groove 4 and a buckle seat 42 installed on the external threaded seat 3, the buckle seat 42 cooperates with the top block 41, one side of the top block 41 is connected to the inside of the groove 4 through a spring 43, a sliding slope 421 is provided on the end of the buckle seat 42 away from the external threaded seat 3, a guide rod 44 is provided in the spring 43, a slide groove 411 cooperating with the guide rod 44 is opened on the top block 41, one end of the guide rod 44 is fixedly connected to the inner wall of the groove 4, and the other end is plugged into the top block 41. During assembly, first align the internal threaded hole 21 with the external threaded seat 3, and then rotate the protective cover 2 for threaded connection. During the rotation, the top block 41 will abut against the buckle seat 42. Continue to rotate the protective cover 2 to press the buckle seat 42 into the groove 4. When pressed in, the top block 41 retreats to make way for the buckle seat 42 due to the oblique resistance and compresses the spring 43. When the buckle seat 42 abuts against the inner wall of the groove 4, the top block 41 returns to its position under the elastic force of the spring 43 to limit the buckle seat 42, thereby completing the fixation.

Claims

1. A highly sealed hypoid gear reducer housing, comprising a housing (1) and a protective cover (2), characterized in that: An external thread seat (3) is provided on the inner end surface of the shell (1); an internal thread hole (21) matching with the external thread seat (3) is provided on the side of the protective cover (2); a locking structure is provided between the external thread seat (3) and the internal thread hole (21); the locking structure comprises a groove (4) provided on the side wall of the internal thread hole (21), a top block (41) arranged in the groove (4), and a buckle seat (42) installed on the external thread seat (3); the buckle seat (42) matches with the top block (41); and one side of the top block (41) is connected to the inside of the groove (4) through a spring (43).

2. The high-sealing hypoid gear reducer housing according to claim 1, characterized in that: An end of the buckle seat (42) away from the external thread seat (3) is provided with a sliding inclined surface (421).

3. The high-sealing hypoid gear reducer housing according to claim 1, characterized in that: A guide rod (44) is arranged inside the spring (43), a slide groove (411) matching with the guide rod (44) is provided on the top block (41), one end of the guide rod (44) is fixedly connected to the inner wall of the groove (4), and the other end is plugged into the top block (41).

4. The high-sealing hypoid gear reducer housing according to claim 1, characterized in that: A positioning ring seat (11) is provided on the inner end surface of the housing (1) outside the external thread seat (3), and a positioning groove (22) matching the positioning ring seat (11) is provided on the protective cover (2).

5. The high-sealing hypoid gear reducer housing according to claim 1, characterized in that: Baffles (12) are provided on both sides of the shell (1), and the baffles (12) are fixedly connected to the shell (1) and the protective cover (2) by means of bolts.

6. The high-sealing hypoid gear reducer housing according to claim 5, characterized in that: Fasteners (13) are provided at the four outer corners of the connection between the shell (1) and the protective cover (2); the fastener (13) is arranged in an L-shaped structure, and its two ends are respectively connected and fixed to the top and side of the shell (1) and the protective cover (2).

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