A worm gear reduction device

Abstract

The invention discloses a worm gear reduction device, comprising a mounting box, a first output shaft, a second output shaft, an output flange, a first worm, a first worm wheel, a second worm, a second worm wheel, a third worm and a third worm wheel; the first output shaft is pivoted to the mounting box; the first worm wheel is fixed to the first output shaft; the first worm is meshed with the first worm wheel for transmission connection with an external power source; the second worm wheel is sleeved outside the first output shaft, and is axially fixed with the first output shaft and circumferentially rotatable; the second worm is meshed with the second worm wheel for transmission connection with an external power source; the output flange is movably sleeved outside the first output shaft and fixed with the second worm wheel; the second output shaft is pivoted to the mounting box; the third worm wheel is fixedly sleeved outside the second output shaft; the third worm is meshed with the third worm wheel for transmission connection with an external power source. The invention can realize three inputs and three non-interfering reduction outputs, and has a compact structure and reduces space occupation.

Description

Technical Field

[0001] The invention relates to a reduction gear, in particular to a worm gear reduction gear. Background Art

[0002] At present, a reduction gear is often used to adjust the output speed. However, the existing reduction gear can only receive power from one power source, that is, receive one power input, and output it after reducing the speed. Moreover, when a reduction operation of multiple power inputs is required, multiple reduction gears need to be used simultaneously to achieve it, and the overall space occupied by multiple reduction gears is relatively large. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, an object of the present invention is to provide a worm gear reduction device which can realize three inputs and three non-interfering reduction outputs, and has a compact structure and reduces space occupancy.

[0004] The purpose of the present invention is achieved by the following technical solutions:

[0005] A worm gear reduction device, comprising a mounting box, a first output shaft, a second output shaft, an output flange, and a first worm, a first worm wheel, a second worm, a second worm wheel, a third worm and a third worm wheel, all of which are arranged in the mounting box; the first output shaft is pivotally connected to the mounting box, and one side of the first output shaft extends out of the mounting box; the first worm wheel is fixedly sleeved outside the first output shaft; the first worm is pivotally connected to the mounting box and meshes with the first worm wheel, and is used for transmission connection with an external power source; the second worm wheel is sleeved outside the first output shaft and meshes with the first output The shaft is fixed in the axial direction of the first output shaft and can rotate circumferentially; the second worm is pivoted to the installation box and meshes with the second worm wheel, and is used to be connected to an external power source by transmission; the output flange is movably sleeved outside the first output shaft, fixedly connected to the second worm wheel, and located outside the installation box; the second output shaft is pivoted to the installation box, and one side of the second output shaft extends out of the installation box; the third worm wheel is fixedly sleeved outside the second output shaft; the third worm is pivoted to the installation box and meshes with the third worm wheel, and is used to be connected to an external power source by transmission.

[0006] Furthermore, the second worm gear is mounted on the first output shaft through a first bearing; the second worm gear is axially fixed to the first output shaft through a first bearing assembly; the first bearing assembly includes a second bearing and a third bearing; the second bearing and the third bearing are disposed on opposite sides of the second worm gear and respectively abut against the second worm gear; the inner ring of the second bearing is sleeved on the first output shaft, and the outer ring of the second bearing is fixedly connected to the mounting box; the inner ring of the third bearing is sleeved on the first output shaft, and the outer ring of the third bearing is fixedly connected to the mounting box.

[0007] Further, the second bearing, the second worm gear, the third bearing and the first worm gear are sequentially arranged in intervals from one side of the first output shaft to the other side of the first output shaft.

[0008] Further, the first output shaft and the second output shaft are arranged perpendicular to each other, and the second worm, the first output shaft, the first worm and the third worm are arranged in sequence along the axial direction of the second output shaft; the third worm, the second output shaft and the first worm are arranged in sequence along the axial direction of the first output shaft from one side of the first output shaft to the other side of the first output shaft.

[0009] Furthermore, a coupling is fixed to the first worm gear, and is transmission-connected to an external power source via the coupling.

[0010] Furthermore, the first output shaft is mounted on the mounting box via a second bearing assembly.

[0011] Furthermore, the second output shaft is mounted on the mounting box via a third bearing assembly.

[0012] Furthermore, the installation box comprises a box body having an opening and an end cover sealing the opening, and the end cover is detachably fixed to the box body.

[0013] Further, the output flange and the portion of the first output shaft extending out of the installation box are located on the same side of the installation box.

[0014] Furthermore, a limiting lever located outside the installation box is fixed on the second worm gear.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention realizes the first input and reduced-speed output by arranging a first worm wheel, a first worm and a first output shaft, realizes the second input and reduced-speed output by arranging a second worm wheel, a second worm and an output flange, and realizes the three inputs and reduced-speed output by arranging a third worm, a third worm wheel and a second output shaft. In this way, three inputs and three reduced-speed outputs that do not interfere with each other are realized; furthermore, the first worm wheel, the second worm wheel and the second output flange are all sleeved outside the first output shaft. At this time, the above-mentioned components are overlapped with the first output shaft, which can make the overall structure more compact, thereby reducing the overall space occupancy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of the worm gear reduction device of the present invention;

[0018] Figure 2 This is one of the structural schematic diagrams of the worm gear reduction device of the present invention (excluding the installation box);

[0019] Figure 3 This is the second structural schematic diagram of the worm gear reduction device of the present invention (excluding the installation box);

[0020] Figure 4 It is a front view of the worm gear reduction device of the present invention;

[0021] Figure 5 For the present invention Figure 4 AA section view.

[0022] In the figure: 10, mounting box; 20, first output shaft; 30, second output shaft; 40, output flange; 50, first worm; 60, first worm wheel; 70, second worm; 80, second worm wheel; 90, third worm; 100, second bearing; 110, third bearing; 120, coupling; 130, limit stop rod; 140, third worm wheel. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0024] like Figure 1-5A worm gear reduction device shown in the figure includes an installation box 10, a first output shaft 20, a second output shaft 30, an output flange 40, and a first worm 50, a first worm wheel 60, a second worm 70, a second worm wheel 80, a third worm 90 and a third worm wheel 140 all arranged in the installation box 10; the first output shaft 20 is pivotally connected to the installation box 10, and one side of the first output shaft 20 extends out of the installation box 10; the first worm wheel 60 is fixedly sleeved outside the first output shaft 20; the first worm 50 is pivotally connected to the installation box 10 and meshes with the first worm wheel 60, and is used for transmission connection with an external power source; in this way, the external power source drives the first worm 50 to rotate, and the first worm 50 drives the first worm wheel 60 The second worm gear 80 is sleeved outside the first output shaft 20, and is fixed to the first output shaft 20 in the axial direction of the first output shaft 20 and rotatable in the circumferential direction; the second worm 70 is pivoted to the mounting box 10 and meshes with the second worm gear 80, and is used for transmission connection with the external power source; the output flange 40 is movably sleeved outside the first output shaft 20, is fixed to the second worm gear 80, and is located outside the mounting box 10; in this way, the external power source drives the second worm 70 to rotate, and the second worm 70 drives the second worm gear 80 to rotate and decelerates the power of the external power source and outputs it from the output flange 40, realizing the second power input and decelerated output; the second output shaft 30 is pivoted to the mounting box 10 On the mounting box 10, one side of the second output shaft 30 extends out of the mounting box 10; the third worm gear 140 is fixedly sleeved outside the second output shaft 30; the third worm 90 is pivotally connected to the mounting box 10 and meshes with the third worm gear 140, and is used for transmission connection with an external power source; in this way, the external power source drives the third worm gear 90 to rotate, and the third worm gear 90 drives the third worm gear 140 to rotate, and the power of the external power source is decelerated and output from the second output shaft 30, thereby realizing the third power input and decelerated output.

[0025] As can be seen from the above, the worm gear reduction device realizes three inputs and three outputs by providing the first output shaft 20, the second output shaft 30, the output flange 40, the first worm 50, the first worm wheel 60, the second worm 70, the second worm wheel 80, the third worm 90 and the third worm wheel 140, and the first worm wheel 60, the second worm wheel 80 and the second output flange 40 are all sleeved outside the first output shaft 20, that is, the above components are overlapped with the first output shaft 20, which can make the overall structure more compact, thereby reducing the overall space occupation. Reduce the overall volume and reduce space occupation.

[0026] Specifically, the second worm gear 80 is installed on the first output shaft 20 through the first bearing; the second worm gear 80 is axially fixed to the first output shaft 20 through the first bearing assembly; the first bearing assembly includes a second bearing 100 and a third bearing 110; the second bearing 100 and the third bearing 110 are respectively disposed on opposite sides of the second worm gear 80 and respectively abut against the second worm gear 80. It can be understood that the second bearing 100, the second worm gear 80 and the third bearing 110 are arranged along the axial direction of the first output shaft 20, so that the second worm gear 80 is restricted from axially moving relative to the first output shaft 20 on the first output shaft 20; the inner ring of the second bearing 100 is sleeved on the first output shaft 20, and the outer ring of the second bearing 100 is fixedly connected to the mounting box 10; the inner ring of the third bearing 110 is sleeved on the first output shaft 20 In this way, the outer ring of the third bearing 110 is fixedly connected to the mounting box 10 ; thus, the first output shaft 20 also supports the second bearing 100 and the third bearing 110 , thereby improving the installation stability of the second bearing 100 and the third bearing 110 .

[0027] More specifically, the second bearing 100, the second worm gear 80, the third bearing 110 and the first worm gear 60 are arranged in sequence from one side of the first output shaft 20 to the other side of the first output shaft 20. At this time, the third bearing 110 separates the first worm gear 60 and the second worm gear 80, thereby avoiding mutual interference between the first worm gear 60 and the second worm gear 80.

[0028] Specifically, the first output shaft 20 and the second output shaft 30 are arranged perpendicular to each other. At this time, the first output shaft 20 and the second output shaft 30 extend out from different sides of the installation box 10 respectively, and the first output shaft 20 and the second output shaft 30 can be staggered in three-dimensional space, so that the first output shaft 20 and the second output shaft 30 can be connected to the external force-bearing components respectively. More specifically, the second worm 70, the first output shaft 20, the first worm 50 and the third worm 90 are arranged in sequence along the axial direction of the second output shaft 30. The first output shaft 20 staggers the first worm 50 and the second worm 70 to avoid mutual interference between the two, and the second worm 70 is located between the first output shaft 20 and the third worm 90, so that the third worm 90 and the first There is a certain gap between the output shafts 20, such as from, to avoid mutual interference between the third worm 90 and the first output shaft 20, that is, to form an orderly arrangement, avoid mutual interference, and make the arrangement more compact; the third worm 90, the second output shaft 30 and the first worm 50 are arranged in sequence from one side of the first output shaft 20 to the other side of the first output shaft 20 in the axial direction of the first output shaft 20. At this time, in the axial direction of the first output shaft 20, the third worm 90 and the second output shaft 30 correspond to the second bearing 100, the second worm wheel 80 and the third bearing 110 respectively, so there is no need to increase the space occupied in the axial direction of the first output shaft 20, which further makes the structure more compact, that is, further reduces the overall volume.

[0029] Furthermore, the first worm 50 is fixed with a coupling 120, and is connected to the external power source through the coupling 120, that is, the coupling 120 transmits the power of the external power source to the first worm 50; of course, the coupling 120 can also be set on the second worm 70 and the third worm 90, respectively, and they can be connected to the external power source through the coupling 120.

[0030] The first output shaft 20 mentioned above can be installed on the installation box 10 through the second bearing 100 assembly. Of course, the second output shaft 30 can also be installed on the installation box 10 through the third bearing 110 assembly.

[0031] Preferably, the installation box 10 includes a box body with an opening and an end cover covering the opening, and the end cover is detachably fixed to the box body, and the components located in the installation box 10 can be repaired and replaced by removing the end cover; it can be understood that the first worm 50, the first worm wheel 60, the second worm 70, the second worm wheel 80, the third worm 90 and the third worm wheel 140 are all arranged in the box body.

[0032] Specifically, the output flange 40 and the portion of the first output shaft 20 extending out of the installation box 10 are located on the same side of the installation box 10 .

[0033] The above-mentioned limit push rod 130 can also be provided. The limit push rod 130 is fixedly connected to the second worm gear 80 and is located outside the installation box 10. In this way, the limit push rod 130 can be used to abut against an external limit component or an external touch switch, so as to know the rotation position of the output flange 40 and judge whether it has been rotated to the limited position.

[0034] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A worm gear reduction device, characterized in that: The invention comprises a mounting box, a first output shaft, a second output shaft, an output flange, and a first worm, a first worm wheel, a second worm, a second worm wheel, a third worm and a third worm wheel, all of which are arranged in the mounting box; the first output shaft is pivoted on the mounting box, and one side of the first output shaft extends out of the mounting box; the first worm wheel is fixedly sleeved outside the first output shaft; the first worm is pivoted on the mounting box and meshed with the first worm wheel, and is used for transmission connection with an external power source; the second worm wheel is sleeved outside the first output shaft, and is fixed to the first output shaft in the axial direction of the first output shaft and rotatable in the circumferential direction; the second worm is pivoted on the mounting box and meshed with the second worm wheel, and is used for transmission connection with an external power source; the output flange is movably sleeved outside the first output shaft, fixedly connected to the second worm wheel, and is located outside the mounting box; the second output shaft is pivoted on the mounting box, and one side of the second output shaft extends out of the mounting box; the third worm wheel is fixedly sleeved outside the second output shaft; the third worm is pivoted on the mounting box and meshed with the third worm wheel, and is used for transmission connection with an external power source; The second worm gear is mounted on the first output shaft through a first bearing; the second worm gear is axially fixed to the first output shaft through a first bearing assembly; the first bearing assembly includes a second bearing and a third bearing; the second bearing and the third bearing are disposed on opposite sides of the second worm gear and respectively abut against the second worm gear; the inner ring of the second bearing is sleeved on the first output shaft, and the outer ring of the second bearing is fixedly connected to the mounting box; the inner ring of the third bearing is sleeved on the first output shaft, and the outer ring of the third bearing is fixedly connected to the mounting box; The second bearing, the second worm gear, the third bearing and the first worm gear are arranged in sequence from one side of the first output shaft to the other side of the first output shaft; the first worm is fixed with a coupling and is connected to an external power source through the coupling.

2. The worm gear reduction device according to claim 1, characterized in that: The first output shaft and the second output shaft are arranged perpendicular to each other, and the second worm, the first output shaft, the first worm and the third worm are arranged in sequence along the axial direction of the second output shaft; the third worm, the second output shaft and the first worm are arranged in sequence along the axial direction of the first output shaft from one side of the first output shaft to the other side of the first output shaft.

3. The worm gear reduction device according to claim 1, characterized in that: The first output shaft is mounted on the mounting box through a second bearing assembly.

4. The worm gear reduction device according to claim 1, characterized in that: The second output shaft is mounted on the mounting box via a third bearing assembly.

5. The worm gear reduction device according to claim 1, characterized in that: The installation box comprises a box body with an opening and an end cover for sealing the opening, and the end cover is detachably fixed on the box body.

6. The worm gear reduction device according to claim 1, characterized in that: The output flange and the portion of the first output shaft extending out of the mounting box are located on the same side of the mounting box.

7. The worm gear reduction device according to claim 1, characterized in that: A limiting lever located outside the installation box is fixed on the second worm gear.

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