Worm and gear speed reducer

Abstract

The utility model provides a worm and gear speed reducer, and belongs to the technical field of speed reducers. The problem that in the prior art, a speed reducer shell is insufficient in sealing performance is solved. The speed reducer comprises a speed reducer shell and a motor mounting flange, a worm wheel shaft and a worm shaft are arranged in the speed reducer shell, a large through hole and a small through hole are formed in the two sides of the speed reducer shell respectively, and a first deep groove ball bearing and a second deep groove ball bearing are fixedly arranged at the two ends of the worm wheel shaft respectively in a sleeved mode. One end of the worm wheel shaft extends out of the small through hole, the first deep groove ball bearing is connected with the small through hole, a side installation flange is fixedly connected into the large through hole, the interior of the side installation flange is connected with the other end of the worm wheel shaft, and the second deep groove ball bearing is connected with the interior of the side installation flange. The two ends of the worm shaft are fixedly sleeved with a third deep groove ball bearing and a fourth deep groove ball bearing respectively, a front side through hole is formed in the front end of the speed reducer shell, a first connecting ring body is formed at the end of the inner side of the motor mounting flange, extends into the front side through hole and is connected with the speed reducer shell, and a first connecting groove is formed in the first connecting ring body. And a first sealing ring is fixedly mounted in the first connecting groove. The sealing structure has the advantage of being high in sealing performance.

Description

TECHNICAL FIELD

[0001] The utility model belongs to speed reducer technical field relates to a worm gear speed reducer. BACKGROUND

[0002] The worm gear speed reducer is one of commonly used speed reducers, which has compact structure, large transmission ratio and self-locking function under certain conditions.

[0003] The patent with patent publication No. CN202901170U discloses a worm gear speed reducer, which comprises a small speed reducer box, a large speed reducer box, a whole shaft and a connecting flange.

[0004] According to the specification and the specification attached drawings of the patent, it can be seen that in the worm gear speed reducer provided by the patent, the connecting flange is not provided with a sealing structure inside when being connected with the whole shaft, which can cause sealing problems in actual use. UTILITY MODEL CONTENTS

[0005] The utility model discloses a worm gear speed reducer, which can solve the problems in the prior art.

[0006] The utility model discloses a worm gear speed reducer, which can solve the problems in the prior art. A worm gear speed reducer is provided, which comprises a speed reducer shell and a motor mounting flange. The worm shaft is connected to the other end of the worm gear shaft inside the side mounting flange and the second deep groove ball bearing is connected to the inside of the side mounting flange. The worm shaft is connected to the other end of the worm gear shaft inside the side mounting flange and the second deep groove ball bearing is connected to the inside of the side mounting flange. The worm shaft is connected to the other end of the worm gear shaft inside the side mounting flange and the second deep groove ball bearing is connected to the inside of the side mounting flange. The worm shaft is connected to the other end of the worm gear shaft inside the side mounting flange and the second deep groove ball bearing is connected to the inside of the side mounting flange. The worm shaft is connected to the other end of the worm gear shaft inside the side mounting flange and the second deep groove ball bearing is connected to the inside of the side mounting flange.

[0007] In the worm gear speed reducer, the second connecting ring body is provided with a second connecting groove, and the second connecting groove is fixedly provided with a second sealing ring.

[0008] In the worm gear speed reducer, the second connecting ring body is provided with a second connecting groove, and the second connecting groove is fixedly provided with a second sealing ring.

[0009] In the worm gear speed reducer, the second connecting ring body is provided with a second connecting groove, and the second connecting groove is fixedly provided with a second sealing ring.

[0010] In the worm gear speed reducer, the second connecting ring body is provided with a second connecting groove, and the second connecting groove is fixedly provided with a second sealing ring.

[0011] Compared with the prior art, the worm gear speed reducer has the following beneficial effects: 1. By arranging the first sealing ring and the second sealing ring in the motor mounting flange and the inner side of the side mounting flange, the sealing performance of the connection between the motor mounting flange and the side mounting flange and the speed reducer housing is improved; 2. By arranging the cutting surface on the second connecting ring body in the inner side of the side mounting flange, the second connecting ring body and the second deep groove ball bearing can be fully matched when connected, and the sealing effect is improved. BRIEF DESCRIPTION OF DRAWINGS

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

[0013] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0014] Figure 3 It is a schematic diagram of the speed reducer housing structure.

[0015] In the figure: 1, the speed reducer housing; 11, the large hole; 12, the small hole; 13, the front side through hole; 14, the rear oil cover; 15, the air hole; 2, the motor mounting flange; 21, the first connecting ring body; 22, the first connecting groove; 23, the first sealing ring; 3, the worm shaft; 31, the first deep groove ball bearing; 32, the second deep groove ball bearing; 4, the worm shaft; 41, the third deep groove ball bearing; 42, the fourth deep groove ball bearing; 5, the side mounting flange; 51, the second connecting ring body; 52, the second connecting groove; 53, the second sealing ring; 54, the cutting surface; 6, the top sealing plug. DETAILED DESCRIPTION

[0016] The utility model discloses a specific embodiment as follows and further describes the technical scheme of the utility model in connection with the drawings, but the utility model is not limited to these embodiments.

[0017] As Figures 1 to 3 The utility model discloses a worm gear reducer, including reducer casing 1, motor installation flange 2, side installation flange 5, worm wheel shaft 3 and worm shaft 4, worm wheel shaft 3 and worm shaft 4 are arranged in the inside of reducer casing 1, and worm wheel shaft 3 and worm shaft 4 are perpendicular to each other and are connected with each other, and worm wheel shaft 3 and worm shaft 4 are connected with each other, and the front end of reducer casing 1 is provided with front side through -hole 13, and the inner side end of motor installation flange 2 forms first connecting ring body 21, and first connecting ring body 21 is inserted into front side through -hole 13 and is connected with reducer casing 1, and first connecting ring body 21 is provided with first connecting groove 22, and first connecting groove 22 is fixedly installed with first sealing ring 23, when first connecting ring body 21 is inserted into front side through -hole 13 and is connected, first sealing ring 23 is contacted with the inner wall of front side through -hole 13 and realizes sealing effect.

[0018] As Figures 1 to 3 The utility model discloses a worm gear reducer, including reducer casing 1, motor installation flange 2, side installation flange 5, worm wheel shaft 3 and worm shaft 4, worm wheel shaft 3 and worm shaft 4 are arranged in the inside of reducer casing 1, and worm wheel shaft 3 and worm shaft 4 are perpendicular to each other and are connected with each other, and worm wheel shaft 3 and worm shaft 4 are connected with each other, and the front end of reducer casing 1 is provided with front side through -hole 13, and the inner side end of motor installation flange 2 forms first connecting ring body 21, and first connecting ring body 21 is inserted into front side through -hole 13 and is connected with reducer casing 1, and first connecting ring body 21 is provided with first connecting groove 22, and first connecting groove 22 is fixedly installed with first sealing ring 23, when first connecting ring body 21 is inserted into front side through -hole 13 and is connected, first sealing ring 23 is contacted with the inner wall of front side through -hole 13 and realizes sealing effect.

[0019] As Figures 1 to 3 The utility model discloses a worm gear reducer, including reducer casing 1, motor installation flange 2, side installation flange 5, worm wheel shaft 3 and worm shaft 4, worm wheel shaft 3 and worm shaft 4 are arranged in the inside of reducer casing 1, and worm wheel shaft 3 and worm shaft 4 are perpendicular to each other and are connected with each other, and worm wheel shaft 3 and worm shaft 4 are connected with each other, and the front end of reducer casing 1 is provided with front side through -hole 13, and the inner side end of motor installation flange 2 forms first connecting ring body 21, and first connecting ring body 21 is inserted into front side through -hole 13 and is connected with reducer casing 1, and first connecting ring body 21 is provided with first connecting groove 22, and first connecting groove 22 is fixedly installed with first sealing ring 23, when first connecting ring body 21 is inserted into front side through -hole 13 and is connected, first sealing ring 23 is contacted with the inner wall of front side through -hole 13 and realizes sealing effect.

[0020] Further, as Figure 2 The upper end of second connecting ring body 51 is provided with cutting surface 54, and cutting surface 54 forms a groove in the inner side end of second connecting ring body 51, so that the lower end of cutting surface 54 is closely attached to the upper end of second deep groove ball bearing 32, thereby achieving auxiliary sealing effect.

[0021] Further, as Figures 1 to 3As shown, the top end of the speed reducer housing 1 is provided with a vent hole 15, and a top sealing plug 6 is sealingly connected in the vent hole 15.

[0022] The specific embodiments described herein merely exemplify the spirit of the present application. Those skilled in the art to which the present application belongs can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

[0023] Although various terms are used herein more frequently, the possibility of using other terms is not excluded. The use of these terms is only for the convenience of describing and explaining the essence of the present application; any additional limitation by interpreting them is contrary to the spirit of the present application.

Claims

1. A worm reduction gear, comprising a reduction gear housing (1) and a motor mounting flange (2), a worm shaft (3) and a worm wheel shaft (4) are arranged inside the reduction gear housing (1), characterized in that: The large through hole (11) and the small through hole (12) are respectively arranged on the two sides of the reducer shell (1), the first deep groove ball bearing (31) and the second deep groove ball bearing (32) are respectively fixedly sleeved on the two ends of the worm shaft (3), one end of the worm shaft (3) extends out of the small through hole (12) and the first deep groove ball bearing (31) is connected with the small through hole (12), the side mounting flange (5) is fixedly connected in the large through hole (11), the other end of the worm shaft (3) is connected with the inside of the side mounting flange (5) and the second deep groove ball bearing (32) is connected with the inside of the side mounting flange (5), the third deep groove ball bearing (41) and the fourth deep groove ball bearing (42) are respectively fixedly sleeved on the two ends of the worm shaft (4), the front side through hole (13) is arranged at the front end of the reducer shell (1), the first connecting ring body (21) is formed at the inner side end of the motor mounting flange (2), the first connecting ring body (21) extends into the front side through hole (13) and is connected with the reducer shell (1), the first connecting groove (22) is arranged in the first connecting ring body (21), the first sealing ring (23) is fixedly installed in the first connecting groove (22), and the third deep groove ball bearing (41) is connected with one side of the first connecting ring body (21).

2. A worm and gear speed reducer according to claim 1, characterized in that: The second connecting ring body (51) is formed in the inside of the side mounting flange (5), the second connecting groove (52) is arranged in the second connecting ring body (51), and the second sealing ring (53) is fixedly installed in the second connecting groove (52).

3. A worm and gear speed reducer according to claim 2, characterized in that: The cutting surface (54) is arranged at the upper end of the second connecting ring body (51), and the lower end of the cutting surface (54) is attached to the upper end of the second deep groove ball bearing (32).

4. A worm and gear speed reducer according to claim 1, characterized in that: The rear oil cover (14) is arranged at the rear side of the reducer shell (1), and the fourth deep groove ball bearing (42) is attached to the inside of the rear oil cover (14).

5. A worm and gear speed reducer according to claim 1, characterized in that: The vent hole (15) is arranged at the top end of the reducer shell (1), and the top sealing plug (6) is sealingly connected in the vent hole (15).

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