Connecting structure for shell and end cover of speed reducer

Abstract

The utility model relates to the technical field of speed reducers, in particular to a speed reducer shell and end cover connecting structure which comprises a speed reducer shell, an output shaft and a base. A shell connecting face is arranged at one end of the speed reducer shell, an end cover is installed on the outer side of the shell connecting face in a plug-in mode, the side faces of the four corners of the end cover are each provided with a set of plug-in positioning pieces, plug holes are formed in the side walls, corresponding to the plug-in positioning pieces, of the shell connecting face, and the side, away from the end cover, of the shell connecting face communicates with a main plug pipe with the same diameter as the plug holes. The inserting positioning piece comprises a main inserting rod fixed to the side wall of the end cover, a plurality of elastic limiting rods are annularly and elastically arranged on the circumferential side wall of an elastic inserting rod base pipe at equal intervals, the main inserting rod is connected with the inserting channel in an inserting mode, and positioning holes are formed in the positions, corresponding to the elastic limiting rods, of the circumferential side wall of the inner end of the inserting channel; and a spring compression ring slidably sleeves the outer side of the main insertion pipe, far away from the shell connecting surface, of the positioning hole. The structure is extremely convenient to assemble and disassemble, and structures such as the interior of the speed reducer shell are convenient to maintain and replace.

Description

Technical Field

[0001] The utility model relates to the technical field of reducers, in particular to a connection structure between a reducer housing and an end cover. Background Art

[0002] Reducers are generally used for low-speed and high-torque transmission equipment. They reduce the speed of the motor, internal combustion engine or other high-speed power through the large gear with a small number of teeth on the input shaft of the reducer. In general, a reducer is a power transmission mechanism that uses a gear speed converter to reduce the number of revolutions of the motor to the desired number of revolutions and obtain a larger torque.

[0003] The existing patent authorization number is: CN202992117U, which discloses a connection structure between a reducer housing and an end cover, including a reducer housing and two symmetrical bases fixed at the lower end of the reducer housing, and also including an end cover fixedly connected to the front end of the reducer housing, and the end cover and the reducer housing are an integrated structure, the upper end of the reducer housing is provided with a nameplate and a vent hole, and the lower end of the reducer housing is provided with an oil drain plug. According to the technical solution of the utility model, the integrated structure of the end cover and the reducer housing is easy to fine-process, there is no accumulated processing size tolerance of the split structure, the shape and position tolerance of the end cover and the reducer housing is reduced, and it is more beautiful; and the processing cost of turning and drilling the end cover is saved. Through the analysis of the above connection structure, it can be known that the integrated design increases the anti-torsion properties of the reducer housing as a whole and saves the trouble of frequent installation and removal of the end cover, but in actual use, there are still major defects. The integrated design causes the output shaft and the structure inside the housing to fail once, and it is impossible to quickly repair and replace them from the output shaft. Moreover, for the reducer, the output shaft has a high probability of damage and failure due to long-term operation. The outer end cover and the housing are integrated, which is extremely unfavorable for later maintenance.

[0004] Therefore, in view of the above-mentioned problems, the present technical solution designs a connection structure between the reducer housing and the end cover. Utility Model Content

[0005] The purpose of the utility model is to provide a connection structure between a reducer housing and an end cover to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a reducer housing and end cover connection structure, including a reducer housing, an output shaft, and a base; the output shaft is arranged at one end of the reducer housing, the base is fixedly installed at the bottom of the reducer housing, a housing connection surface is arranged at one end of the reducer housing, an end cover is plug-inly installed on the outer side of the housing connection surface, a group of plug-in positioning parts are respectively installed on the four corners of the end cover, a plug-in hole is opened on the side wall of the housing connection surface corresponding to the plug-in positioning part, a main plug-in pipe with the same diameter as the plug-in hole is connected on the side away from the end cover, the plug-in hole and the main plug-in pipe are connected to form a plug-in channel, the plug-in positioning part includes a main plug rod fixed on the side wall of the end cover, an elastic plug rod base tube with a diameter smaller than the main plug rod is installed at the end of the main plug rod, a plurality of elastic limit rods are elastically arranged at equal intervals in an annular manner on the circumferential side wall of the elastic plug rod base tube, the main plug rod is fixed on the side wall of the end cover, an elastic plug rod base tube with a diameter smaller than the main plug rod is installed at the end of the main plug rod, a plurality of elastic limit rods are elastically arranged at equal intervals on the circumferential side wall of the elastic plug rod base tube, The plug rod is plugged into the plug-in channel, and a positioning hole is opened on the circumferential side wall of the inner end of the plug-in channel at the position of the elastic limit rod. When the main plug rod is plugged into the plug-in channel and moved, the elastic limit rod elastically moves into the corresponding positioning hole. At this time, the main plug rod is positioned in the plug-in channel, and a spring compression ring is provided on the outer sliding sleeve of the main plug tube away from the outer shell connection surface through the positioning hole. Under manual control, the spring compression ring passes through the outer side of the positioning hole to gradually apply pressure to the end of the elastic limit rod extending to the outer side of the positioning hole, and compresses it into the inside of the main plug tube, thereby realizing the main plug rod to move quickly from the plug-in channel, that is, realizing the rapid installation and removal function between the end cover of this structure and the outer shell connection surface, that is, compared with the end cover and the outer shell connection surface of the integrated design, this structure is extremely convenient to install and disassemble, and it is also convenient to repair and replace the structures such as the inner part of the reducer shell.

[0007] Compared with the prior art, the beneficial effects of the utility model are as follows: by adopting the method of plugging the plug-in positioning piece into the plug-in channel, cooperating with the elastic limit between the elastic limit rod and the positioning hole, the end cover and the shell connection surface are quickly and stably installed, and then the arc-shaped compression groove on the inner side of the spring compression ring is used to gradually apply pressure to the end of the elastic limit rod, and the elastic limit rod is compressed into the main plug tube, thereby removing the main plug rod from the plug-in channel to realize the quick disassembly function. By utilizing the cooperation between the above structures, the shell connection surface and the end cover are ensured to be quickly installed and disassembled, and it is also convenient for maintenance and replacement of the inside of the reducer shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the main structure of the connection structure between the reducer housing and the end cover.

[0009] Figure 2 It is a schematic diagram of the three-dimensional structure of the end cover in the connection structure between the reducer housing and the end cover.

[0010] Figure 3 It is a schematic diagram of the main structure of the end cover in the connection structure between the reducer housing and the end cover.

[0011] Figure 4for Figure 3 Schematic diagram of the enlarged structure of A.

[0012] Figure 5 for Figure 1 A schematic diagram of the enlarged structure of B;

[0013] Among them: reducer housing 10, output shaft 11, base 12, housing connecting surface 13, end cover 14, plug-in positioning piece 15, main plug rod 16, slide bar 17, slide rail 18, main plug tube 19, elastic plug rod base tube 20, elastic limiting rod 21, spring connecting ring 22, spring 23, positioning hole 24, spring compression ring 25, arc compression slide groove 26, slider 27, slide groove 28. DETAILED DESCRIPTION

[0014] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0015] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0016] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0017] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0018] See also Figure 1-Figure 5The reducer housing and the end cover connection structure include a reducer housing 10, an output shaft 11, and a base 12; the output shaft 11 is arranged at one end of the reducer housing 10, and the base 12 is fixedly installed at the bottom of the reducer housing 10; a housing connection surface 13 is arranged at one end of the reducer housing 10, and an end cover 14 is installed on the outer side of the housing connection surface 13 in a plug-in manner; a group of plug-in positioning members 15 are respectively installed on the four corners of the end cover 14; a plug-in hole is opened on the side wall of the housing connection surface 13 corresponding to the plug-in positioning member 15, and a main plug-in pipe 19 with the same diameter as the plug-in hole is connected to the side away from the end cover 14, and the plug-in hole and the main plug-in pipe 19 are connected to form a plug-in channel, and the plug-in positioning member 15 includes a main plug rod 16 fixed on the side wall of the end cover 14, and an elastic plug rod base tube 20 with a diameter smaller than the main plug rod 16 is installed at the end of the main plug rod 16, and a plurality of elastic limiting rods 21 are elastically arranged at equal intervals in an annular manner on the circumferential side wall of the elastic plug rod base tube 20, and the main plug rod 16 and the plug The connecting channel is plugged in, and a positioning hole 24 is opened on the circumferential side wall of the inner end of the plug-in channel at the position corresponding to the elastic limiting rod 21. When the main plug-in rod 16 is plugged into the plug-in channel and moved, until the elastic limiting rod 21 elastically moves into the corresponding positioning hole 24, the main plug-in rod 16 is positioned in the plug-in channel. The positioning hole 24 is away from the outer side of the main plug-in tube 19 of the shell connection surface 13 and is slidably sleeved with a spring compression ring 25. Under manual control, the spring compression ring 25 passes through the outer side of the positioning hole 24 to gradually apply pressure to the end of the elastic limiting rod 21 extending to the outer side of the positioning hole 24, and compresses it into the main plug-in tube 19, thereby realizing the main plug-in rod 16 to move quickly from the plug-in channel, that is, realizing the quick installation and removal function between the end cover 14 of this structure and the shell connection surface 13, that is, compared with the end cover 14 and the shell connection surface 13 of the integrated design, this structure is extremely convenient to install and disassemble, and it is also convenient to repair and replace the internal structure of the reducer housing 10.

[0019] In the embodiment of the present invention, in order to ensure the stability of the main plug rod 16 after being plugged into the plugging channel, a plurality of evenly distributed slide bars 17 are annularly installed on the side wall of the main plug rod 16, and the slide bars 17 are parallel to the axis of the main plug rod 16. A slide rail 18 is provided on the inner wall of the plugging channel corresponding to the slide bars 17, and the slide bars 17 slide along the inside of the slide rail 18 to ensure the stability of the main plug rod 16 in the plugging channel;

[0020] Specifically, a plurality of through holes are provided in an annular manner on the circumferential outer wall of the elastic plug-in rod base tube 20, and an elastic limiting rod 21 is telescopically connected in the through hole. The inner end of the elastic limiting rod 21 extends to the inside of the elastic plug-in rod base tube 20 and is commonly connected to a fixing block, which is installed on the inner wall of the elastic plug-in rod base tube 20. A spring connecting ring 22 is installed on the outer wall of the elastic limiting rod 21 located inside the elastic plug-in rod base tube 20. A plurality of springs 23 are elastically connected in an annular manner at equal intervals between the spring connecting ring 22 and the fixing block, and the elastic action of the spring 23 is utilized to provide adjustment for the extension and contraction of the elastic limiting rod 21;

[0021] It should be noted that when designing the distance between the elastic limit rod 21 and the end of the main plug-in rod 16, and the distance between the positioning hole 24 and the inner end of the slide rail 18, prior testing is required to ensure that after the main plug-in rod 16 is fully inserted into the insertion channel, the end of the slide bar 17 is completely moved to the inner end of the slide rail 18, and the elastic limit rod 21 moves to the positioning hole 24 and extends outward at the same time.

[0022] In one embodiment of the present invention, an arc-shaped compression groove 26 is provided on the inner wall of the spring compression ring 25 on the side facing the positioning hole 24. When the arc-shaped compression groove 26 moves toward the outside of the positioning hole 24, the elastic limiting rod 21 is compressed into the main plug tube 19 through the gradually increased pressure inside the arc-shaped compression groove 26. A plurality of sliders 27 are installed at equal intervals in a ring at a position away from the arc-shaped compression groove 26 inside the spring compression ring 25. A groove 28 parallel to the axis of the main plug tube 19 is provided on the outer wall of the main plug tube 19 corresponding to the slider 27. The slider 27 is placed in the groove 28 and slides, thereby limiting the movement of the spring compression ring 25 placed outside the main plug tube 19 to prevent the spring compression ring 25 from detaching from the outside of the main plug tube 19.

[0023] The working principle of the utility model is: in the idle part of the device, all the driving parts mentioned above, which refer to the power elements, electrical components and the adapted power supply, are connected through wires, and the electrical connection is completed in a sequential working order. The detailed connection means are well-known technologies in the field. The following mainly introduces the working principle and process, and does not explain the electrical control. When the end cover 14 needs to be connected and installed with the shell connection surface 13, the end cover 14 is directly moved toward the shell connection surface 13, and the main plug rod 16 on the end cover 14 is plugged into the corresponding plug channel. At the same time, the slide bar 17 slides along the corresponding slide rail 18 until the elastic limit rod 21 extends into the corresponding positioning hole 24, and then cooperates with the rotation restriction of the slide bar 17 and the slide rail 18 to firmly install the main plug rod 16 and the elastic plug rod base tube 20 in the plug-in channel. When it is disassembled later, the spring compression ring 25 is manually slid toward the positioning hole 24, and the structure of the arc-shaped compression slide groove 26 is used to apply pressure to the elastic limit rod 21 extending to the outside of the positioning hole 24 until the elastic limit rod 21 is compressed into the main plug tube 19, and then the main plug rod 16 is moved out of the plug-in channel.

[0024] The above describes in detail the preferred implementation of this patent, but this patent is not limited to the above implementation. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of this patent.

Claims

1. The connection structure between the reducer housing and the end cover is characterized by: The invention comprises a reducer housing (10), an output shaft (11), and a base (12); the output shaft (11) is arranged at one end of the reducer housing (10), the base (12) is fixedly installed at the bottom of the reducer housing (10), the reducer housing (10) is provided with a housing connection surface (13) at one end, an end cover (14) is plug-in-installed on the outer side of the housing connection surface (13), a group of plug-in positioning pieces (15) are respectively installed on the four corners of the end cover (14), a plug hole is opened on the side wall of the housing connection surface (13) corresponding to the plug-in positioning piece (15), and a main plug pipe (19) with the same diameter as the plug hole is connected to the side away from the end cover (14), and the plug hole is connected to the main plug pipe (19) with the same diameter as the plug hole. The plug-in channel is formed by connecting the main plug-in rod (16) to the plug-in channel, and the plug-in positioning member (15) includes a main plug-in rod (16) fixed on the side wall of the end cover (14). An elastic plug-in rod base tube (20) having a diameter smaller than that of the main plug-in rod (16) is installed at the end of the main plug-in rod (16). A plurality of elastic limiting rods (21) are elastically arranged at equal intervals in an annular manner on the circumferential side wall of the elastic plug-in rod base tube (20). The main plug-in rod (16) is plug-connected to the plug-in channel, and a positioning hole (24) is provided at a position corresponding to the elastic limiting rod (21) on the circumferential side wall at the inner end of the plug-in channel. A spring compression ring (25) is slidably sleeved on the outer side of the main plug-in tube (19) away from the shell connection surface (13).

2. The connection structure between the reducer housing and the end cover according to claim 1, characterized in that: A plurality of evenly distributed slide bars (17) are annularly mounted on the side wall of the main plug rod (16), the slide bars (17) being parallel to the axis of the main plug rod (16), a slide rail (18) being provided on the inner wall of the insertion channel corresponding to the slide bars (17), and the slide bars (17) slide along the inside of the slide rail (18).

3. The connection structure between the reducer housing and the end cover according to claim 2, characterized in that: A plurality of through holes are provided in an annular manner on the circumferential outer wall of the elastic plug-rod base tube (20), an elastic limiting rod (21) is telescopically connected in the through hole, the inner end of the elastic limiting rod (21) extends into the interior of the elastic plug-rod base tube (20) and is commonly connected to a fixing block, the fixing block being mounted on the inner wall of the elastic plug-rod base tube (20), a spring connecting ring (22) is mounted on the outer wall of the elastic limiting rod (21) located inside the elastic plug-rod base tube (20), a plurality of springs (23) are elastically connected in an annular manner at equal intervals between the spring connecting ring (22) and the fixing block.

4. The connection structure between the reducer housing and the end cover according to claim 3, characterized in that: An arc-shaped compression slide groove (26) is provided on the inner side wall of the spring compression ring (25) facing the positioning hole (24); a plurality of sliders (27) are installed at equal intervals in a ring shape in a position away from the arc-shaped compression slide groove (26) inside the spring compression ring (25); a slide groove (28) parallel to the axis of the main insert tube (19) is provided on the outer side wall of the main insert tube (19) corresponding to the slider (27); the slider (27) is placed in the slide groove (28) to slide.

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