CN216242172U - Welded type gear box - Google Patents

Abstract

The utility model provides a welded type gear box which comprises a box body, an input gear, a transition gear and an output gear, wherein the input gear, the transition gear and the output gear are rotatably arranged in the box body and are sequentially meshed along a transmission direction; the box includes roof, bottom plate, curb plate and connecting piece, and roof and bottom plate set up relatively, and all weld with the curb plate all around, all are equipped with the through-hole on roof and the bottom plate, and the connecting piece sets up in the inside of box and both ends respectively with the through-hole of roof, the through-hole welding of bottom plate. The gearbox is welded instead of cast to produce the box body, so that the die sinking cost is saved; the splicing structure, the plurality of rib plates which are symmetrically arranged and the welding connecting piece are added, so that the whole structure is more compact, and the mechanical property is improved; a plurality of symmetrically arranged input gears and transition gears are adopted to drive one output gear together, so that part of radial force of the gears can be offset, and the power transmission is more stable.

Description

Welded type gear box

Technical Field

The utility model relates to the technical field of transmission devices, in particular to a welded type gear box.

Background

In various fields of national economy and national defense industry, gear box products are widely applied as mechanical transmission devices, and the mechanical industry has vigorous demands on the gear box products. Therefore, the gear box industry must accelerate elimination of backward capacity, vigorously develop high-efficiency energy-saving products, increase product updating force and adjust product structures to keep good development momentum.

In the prior art, gearbox products are typically made by a casting process. The casting process has more production procedures, complicated process and easy production of waste products, and simultaneously, the casting product has insufficiently compact structure and poorer mechanical property. Meanwhile, the mold required by the gear box casting process is complex in manufacturing process and high in mold opening cost.

In view of the foregoing, there is a great need for a welded gearbox that solves the problems of the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a welded type gear box, which aims to shorten the production period of the gear box, reduce the production cost and improve the mechanical property of the gear box, and the specific technical scheme is as follows:

a welded type gear box comprises a box body, an input gear, a transition gear and an output gear, wherein the input gear, the transition gear and the output gear are rotatably arranged in the box body and are sequentially meshed along a transmission direction; the box includes roof, bottom plate, curb plate and connecting piece, roof and bottom plate set up relatively, and all weld with the curb plate all around, all be equipped with the through-hole on roof and the bottom plate, the connecting piece sets up in the inside of box and both ends respectively with the through-hole of roof, the through-hole welding of bottom plate.

Preferably, in the above technical solution, the rotation center of the input gear, the rotation center of the transition gear, and the rotation center of the output gear are located on the same straight line.

Preferably, in the above technical solution, the number of the input gear and the number of the transition gears are at least two, and the plurality of input gears and the plurality of transition gears are arranged along the circumference of the output gear.

Preferably, in the above technical solution, the plurality of input gears and the plurality of transition gears are symmetrically distributed along a vertical central axis of the case.

Preferably among the above technical scheme, still include the speed reducer that sets up with input gear one-to-one, the speed reducer sets up on the box, and speed reducer and input shaft.

Preferably in the above technical solution, the plurality of connecting pieces are arranged along the circumference of the output gear and symmetrically distributed according to the vertical central axis of the case.

Preferably, in the above technical solution, the connecting member is a hollow sleeve.

Preferably, the two ends of the connecting piece are respectively welded with sealing plates.

Preferably, the top plate is provided with an installation ring for installing the output shaft, and a plurality of rib plates are arranged along the circumferential direction of the installation ring.

The technical scheme of the utility model has the following beneficial effects:

the gearbox is produced by adopting a welding rather than casting mode, so that the working time is shortened, and the die sinking cost is saved. The splicing structure, the plurality of rib plates which are symmetrically arranged and the welding connecting pieces are additionally arranged, so that the whole structure is more compact, the mechanical property of the structure is improved, and the space is saved. Meanwhile, a plurality of symmetrically arranged input gears and a transition gear are adopted to drive one output gear together, and partial gear radial force can be offset, so that the power transmission is more stable and the failure rate is lower.

In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a front view of the gearbox of the present invention;

FIG. 2 is an isometric view of a gearbox;

FIG. 3 is a front view of the case of FIG. 1;

FIG. 4 is a rear view of the case of FIG. 1;

FIG. 5 is a cross-sectional view of the case of FIG. 1;

the device comprises a box body 1, a box body 2, a speed reducer 3, an input gear 4, a transition gear 5, an output gear 6, an output shaft 101, an upper side plate 102, a left side plate 103, a rib plate 104, a top plate 105, a sealing plate 106, a lower side plate 107, a bottom plate 108, a right side plate 109, a connecting piece 110 and a mounting ring.

Detailed Description

In order that the utility model may be more fully understood, a more particular description of the utility model will now be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

Example 1:

referring to fig. 1-5, a welded gear box comprises a box body 1, and an input gear 3, a transition gear 4 and an output gear 5 which are rotatably arranged in the box body 1 and sequentially engaged along a transmission direction, wherein the output gear 5 is connected with an output shaft 6, and the input gear 3 is connected with an input shaft; the box body 1 comprises a top plate 104, a bottom plate 107, side plates and a connecting piece 109, wherein the top plate 104 and the bottom plate 107 are arranged oppositely and welded with the side plates all around, through holes are formed in the top plate 104 and the bottom plate 107, the through holes in the top plate 104 and the through holes in the bottom plate 107 are arranged coaxially, and the connecting piece 109 is arranged in the box body 1 and welded with the through holes in the top plate 104 and the through holes in the bottom plate 107 at two ends respectively.

Referring to fig. 3 to 4, the side plates include an upper side plate 101, a left side plate 102, a lower side plate 106 and a right side plate 108, and the upper side plate 101, the left side plate 102, the lower side plate 106, the right side plate 108, a top plate 104 and a bottom plate 107 form a box body 1 with a hollow structure; in this embodiment, the transition gear 4 is also disposed inside the case 1 via a shaft.

Referring to fig. 1, the rotation center of the input gear 3, the rotation center of the transition gear 4, and the rotation center of the output gear 5 are located on the same line. With this arrangement, the theoretical radial resultant force of the transition gear 4 is zero, and the distance between the center of the input gear 3 and the center of the output gear 5 is increased due to the presence of the transition gear 4, so that the installation space of other components can be increased (the other components are not illustrated in the figure, that is, after the distance between the input gear and the output gear is increased, more space can be made inside and outside the case for installing other components).

Referring to fig. 1 and 2, the input gear 3 and the transition gear 4 are each at least two in number, and the plurality of pieces of the input gear 3 and the plurality of pieces of the transition gear 4 are arranged along the circumference of the output gear 5. Preferably, the plurality of input gears 3 and the plurality of transition gears 4 are symmetrically distributed along a vertical central axis of the housing 1. When the number of the input gears 3 and the transition gears 4 is odd, as illustrated in fig. 1 and 2, three pieces of the input gears and the transition gears are arranged on the vertical central axis, and the rest are symmetrically distributed according to the vertical central axis, so that part of the radial force of the gears can be counteracted in a symmetrically distributed manner. The vertical central axis in this embodiment refers to a central axis in the direction along the distance between the upper plate 101 and the lower plate 106, and fig. 1 is a half sectional view cut along the vertical central axis.

Referring to fig. 2, the welded gearbox further includes a speed reducer 2 disposed in one-to-one correspondence with the input gear 3, the speed reducer 2 is disposed on the box body 1, and the speed reducer 2 is connected to the input shaft. The speed reducer is connected with an external driving piece, so that driving force is input into the gear box to drive the input gear, the transition gear and the output gear to rotate, and then the driving force is output by the output shaft, and the working purposes of changing the rotating speed, transmitting power and increasing torque are achieved.

Referring to fig. 1, 3 and 5, the plurality of connecting pieces 109 are arranged along the circumference of the output gear 5 and are symmetrically distributed according to the vertical central axis of the case 1, and the corresponding top plate 104 and bottom plate 107 are also provided with a plurality of through holes; preferably, the connecting member 109 is a hollow sleeve. In this embodiment, the connecting member 109 is provided with six members, and the connecting member 109 adopts a sleeve structure, so that the weight of the box body can be reduced, meanwhile, the structural strength of the box body can be increased, and the deformation of the box body can be reduced. Set up the through-hole on roof and bottom plate, be convenient for weld connecting piece 109 and through-hole wall from the outside, reduced the welded degree of difficulty.

Preferably, the both ends of connecting piece 109 have welded shrouding 105 respectively, and the effect of shrouding is the opening at shutoff connecting piece (being the sleeve) both ends, can decide whether to set up according to actual conditions, and the effect of shrouding is more pleasing to the eye.

Referring to fig. 3, the top plate 104 is provided with a mounting ring 110 for mounting the output shaft 6, and a plurality of rib plates 103 are arranged along the circumferential direction of the mounting ring 110, in this embodiment, eight rib plates 103 are provided, so that the weight of the top plate 104 can be reduced while the stability of the top plate 104 is improved, and meanwhile, the rib plates 103 are arranged on the outer side for facilitating welding.

The working principle of the gear box in the embodiment is as follows:

the three speed reducers 2 rotate in the same direction and at the same speed, the output gear 5 is driven to rotate through the input gear 3 and the transition gear 4 together, and power is output by the output shaft, so that the working purposes of changing the rotating speed, transmitting the power and increasing the torque are achieved.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. A welded gearbox is characterized by comprising a box body (1), and an input gear (3), a transition gear (4) and an output gear (5) which are rotatably arranged in the box body (1) and sequentially meshed along a transmission direction, wherein the output gear (5) is connected with an output shaft (6), and the input gear (3) is connected with an input shaft; the box body (1) comprises a top plate (104), a bottom plate (107), side plates and a connecting piece (109), wherein the top plate (104) and the bottom plate (107) are arranged oppositely and welded with the side plates all around, through holes are formed in the top plate (104) and the bottom plate (107), and the connecting piece (109) is arranged in the box body (1) and welded with the through holes of the top plate (104) and the through holes of the bottom plate (107) at two ends respectively.

2. Welded gearbox according to claim 1, wherein the centre of rotation of the input gear (3), the centre of rotation of the transition gear (4) and the centre of rotation of the output gear (5) are located on the same line.

3. The welded gearbox according to claim 2, wherein the number of input gears (3) and transition gears (4) is at least two, the multiple pieces of input gears (3) and the multiple pieces of transition gears (4) being arranged along the circumference of the output gear (5).

4. Welded gearbox according to claim 3, characterised in that the pieces of input gear (3) and the pieces of transition gear (4) are symmetrically distributed along the vertical centre axis of the housing (1).

5. The welded gearbox according to any one of claims 1 to 4, further comprising a speed reducer (2) arranged in one-to-one correspondence with the input gear (3), wherein the speed reducer (2) is arranged on the box body (1), and the speed reducer (2) is connected with the input shaft.

6. Welded gearbox according to claim 5, in which the multi-piece connections (109) are arranged along the circumference of the output gear (5) and are symmetrically distributed according to the vertical central axis of the housing (1).

7. Welded gearbox according to claim 6, in which the connection piece (109) is a hollow sleeve.

8. The welded gearbox according to claim 7, wherein sealing plates (105) are welded to both ends of the connecting piece (109).

9. The welded gearbox according to any one of claims 1 to 4, wherein the top plate (104) is provided with a mounting ring (110) for mounting the output shaft (6), and a plurality of ribs (103) are arranged along the circumferential direction of the mounting ring (110).

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