CN220378817U - Gear box for stirrer - Google Patents

Abstract

The utility model belongs to the technical field of mechanical transmission, and discloses a gearbox for a stirrer. The driving assembly comprises a driving piece and an input shaft, the input shaft is rotatably connected to the box body, one end of the input shaft extends out of the box body to be connected with the driving piece, and the other end of the input shaft extends into the box body; the auxiliary driving assembly comprises an auxiliary driving piece, an intermediate shaft and an overrunning clutch, the fixed end of the auxiliary driving piece is connected with the box body, the output end of the auxiliary driving piece is in transmission connection with one end of the intermediate shaft through the overrunning clutch, the intermediate shaft is in rotation connection with the box body, and the other end of the intermediate shaft extends into the box body and is in transmission connection with the input shaft; the output shaft is rotatably connected to the box body and is in transmission connection with the intermediate shaft, the output shaft is of a hollow shaft structure, and the output shaft is configured to be directly connected with the working machine shaft through a key structure. The gearbox is compact in structure, convenient in auxiliary transmission engagement or disengagement switching operation and high in use safety.

Description

Gear box for stirrer

Technical Field

The utility model relates to the technical field of mechanical transmission, in particular to a gear box for a stirrer.

Background

The stirrer is an engineering machine, can be used for stirring cement, sand and stone, various dry powder mortar and other materials, and is widely applied to the industries of chemical industry, food, pharmacy and the like.

The working principle of the stirrer is that a shaft with blades rotates in a cylinder or a groove to stir and mix various raw materials, so as to obtain a target mixture with proper consistency. When the solid components in the stirring medium occupy a larger proportion, the stirring machine needs a larger torque at the initial stage of stirring so as to stir the medium in the cavity of the stirring machine; during the stirring process, the required stirring torque is reduced due to the inertia of the medium in the cavity.

In the prior art, a structure of a main transmission gear box and an auxiliary transmission gear box is generally adopted to realize power output of two same rotation directions, different powers and different output rotating speeds, but most of the structures adopt shifting forks and jaw clutches to realize engagement or disengagement of a main transmission system and an auxiliary transmission system, and the configuration has the problems of complex structure, high manufacturing cost, large space occupation, potential safety hazard caused by difficult switching operation and the like.

Accordingly, there is a need for a gearbox for a blender that addresses the above-described issues.

Disclosure of Invention

The utility model aims to provide a gearbox for a stirrer, which is compact in structure, convenient in auxiliary transmission engagement or disengagement switching operation and high in use safety.

To achieve the purpose, the utility model adopts the following technical scheme:

the gearbox for the mixer comprises a box body and an active driving assembly, wherein the active driving assembly comprises an active driving piece and an input shaft, the input shaft is rotationally connected to the box body, one end of the input shaft extends out of the box body to be connected with the active driving piece, and the other end of the input shaft extends into the box body; the gearbox further comprises:

the auxiliary driving assembly comprises an auxiliary driving piece, an intermediate shaft and an overrunning clutch, wherein the fixed end of the auxiliary driving piece is connected with the box body, the output end of the auxiliary driving piece is in transmission connection with one end of the intermediate shaft through the overrunning clutch, the intermediate shaft is in rotation connection with the box body, and the other end of the intermediate shaft extends into the box body and is in transmission connection with the input shaft;

the output shaft is rotationally connected to the box body and is in transmission connection with the intermediate shaft, the output shaft is of a hollow shaft structure, and the output shaft is configured to be directly connected with the working machine shaft through a key structure.

Optionally, the auxiliary driving assembly further comprises a shaft connecting piece, the shaft connecting piece is coaxially connected with the output end shaft of the auxiliary driving piece, the shaft connecting piece and the overrunning clutch are coaxially arranged, the inner ring of the overrunning clutch is sleeved and fixedly connected with the intermediate shaft, and the outer ring of the overrunning clutch is connected with the shaft connecting piece.

Optionally, the auxiliary driving assembly further comprises a connecting flange, the connecting flange is connected between the fixed end of the auxiliary driving piece and the box body, and the connecting shaft piece and the overrunning clutch are both located in the connecting flange.

Optionally, the auxiliary driving assembly further comprises a first bearing, a transparent cover and a first oil seal, a first bearing hole is formed in the box body, the first bearing is clamped between the inner wall of the first bearing hole and the intermediate shaft, the transparent cover is sleeved outside the intermediate shaft and connected to the box body, one side, deviating from the box body, of the transparent cover is connected with the connecting flange, and the first oil seal is arranged between the transparent cover and the intermediate shaft.

Optionally, a positioning structure is arranged between the transparent cover and the connecting flange, so as to ensure coaxiality when the transparent cover is connected with the connecting flange.

Optionally, the gearbox further comprises a transmission gear set, and one end of the input shaft extending into the box body is in transmission connection with the intermediate shaft through the transmission gear set.

Optionally, the transmission gear set includes an input bevel gear and an output bevel gear which are in meshed connection, the input bevel gear is sleeved and fixedly connected to the input shaft, and the output bevel gear is sleeved and fixedly connected to the intermediate shaft.

Optionally, the gear box further comprises an output gear, a tooth structure is arranged on the shaft section of the intermediate shaft, the output gear is sleeved and fixedly connected to the output shaft, and the output gear is meshed and connected with the tooth structure.

Optionally, the active driving assembly further comprises a cone box body and a second bearing, the cone box body and the input shaft are coaxially arranged, the second bearing is clamped between the cone box body and the input shaft, and the cone box body is connected with the box body.

Optionally, the gearbox further comprises a cooling and lubricating assembly, and an oil outlet of the cooling and lubricating assembly is communicated with the inner cavity of the box body so as to lubricate parts in the box body.

The utility model has the beneficial effects that:

the utility model provides a gearbox for a mixer, which comprises a box body, an active driving assembly, an auxiliary driving piece and an output shaft. Wherein, the input shaft rotates to be connected in the box, and the one end of input shaft stretches out the box and links to each other with initiative driving piece, and the other end stretches into in the box. The driving piece can drive the input shaft to rotate so as to transmit power. The auxiliary drive assembly includes an auxiliary drive, an intermediate shaft, and an overrunning clutch. The output end of the auxiliary driving piece is in transmission connection with one end of an intermediate shaft through an overrunning clutch, the intermediate shaft is in rotary connection with the box body, and the other end of the intermediate shaft extends into the box body and is in transmission connection with the input shaft; the output shaft is rotatably connected to the box body and is in transmission connection with the intermediate shaft. That is, in the initial stage of the start of the gear box, the auxiliary driving member is operated and the active driving member is not operated, the auxiliary driving member transmits the motion and power to the output shaft through the overrunning clutch and the intermediate shaft, and the large torque required in the initial stage of stirring can be obtained by selecting different auxiliary driving members. When the stirring medium period is entered, the active driving part works, the overrunning clutch does not need an operation instruction, the inner ring and the outer ring of the overrunning clutch are automatically separated, and at the moment, the auxiliary driving part stops working. The auxiliary transmission of the gear box is meshed or disconnected, the switching operation is convenient, the reliability is good, and the use safety is high. Meanwhile, the output shaft is of a hollow shaft structure, the output shaft is configured to be directly connected with the working machine shaft through a key structure, a coupler is not needed to be connected, and space is saved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly explain the drawings needed in the description of the embodiments of the present utility model, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the contents of the embodiments of the present utility model and these drawings without inventive effort for those skilled in the art.

FIG. 1 is a schematic diagram of a gearbox provided by an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of a portion of the structure of a gearbox provided by an embodiment of the present utility model;

fig. 3 is a partial enlarged view at a in fig. 2.

In the figure:

1. a case;

2. an active drive assembly; 21. an input shaft; 22. a cone box body; 23. a second bearing; 24. an input end cap; 25. a second oil seal;

3. an auxiliary drive assembly; 31. an auxiliary driving member; 32. an intermediate shaft; 321. a tooth structure; 33. an overrunning clutch; 34. a coupling; 35. a connecting flange; 351. an inner spigot; 36. a first bearing; 37. a transparent cover; 371. a boss; 38. a first oil seal;

41. an output shaft; 42. an output gear; 43. a third bearing; 44. an output end cap; 45. a third oil seal;

5. a drive gear set;

6. cooling the lubrication assembly.

Detailed Description

The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; either mechanically or electrically. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

The embodiment provides a gearbox for a stirrer, which can provide larger torque at the initial stage of stirring so as to be suitable for the working condition of on-load starting; and the power and the rotating speed are improved in the middle stirring period, the torque is reduced, and the stirring operation efficiency is improved. As shown in fig. 1 and 2, the gearbox comprises a housing 1, an active drive assembly 2, an auxiliary drive 3 and an output shaft 41.

Wherein the active drive assembly 2 comprises an active drive and an input shaft 21. The input shaft 21 is rotatably connected to the case 1, one end of the input shaft 21 extends out of the case 1 to be connected to the driving member, and the other end extends into the case 1. In this embodiment, the active driving member is a main driving motor when the mixer is operating normally, and the main driving motor can provide high-power and high-rotation-speed power driving when the device is operating normally. The output end of the driving member is connected to the input shaft 21 to drive the input shaft 21 to rotate and to transmit force.

Specifically, as shown in fig. 2, the active drive assembly 2 further includes a cone housing 22, a second bearing 23, an input end cap 24, and a second oil seal 25. The box 1 is provided with a first mounting hole corresponding to the mounting position of the input shaft 21, and the first mounting hole, the conical box 22, the second bearing 23, the input end cover 24 and the input shaft 21 are all coaxially arranged. The cone case 22 is partially inserted into the first mounting hole and connected with the case 1, the input shaft 21 is penetrated through the cone case 22, and a second bearing 23 is interposed between the input shaft 21 and the cone case 22 to facilitate rotation of the input shaft 21. The input end cover 24 is sleeved outside the input shaft 21 and connected to one side of the cone box 22, which is away from the box 1, and the second oil seal 25 is arranged between the input end cover 24 and the input shaft 21 so as to ensure the tightness in the box 1. In this embodiment, the cone case 22 is a connecting member that is conventionally used in the art to connect shaft-type parts and case-type parts.

With continued reference to fig. 2, the accessory drive assembly 3 includes an accessory drive 31, an intermediate shaft 32, and an overrunning clutch 33. The fixed end of the auxiliary driving piece 31 is connected to the box body 1, the output end of the auxiliary driving piece 31 is in transmission connection with one end of the intermediate shaft 32 through the overrunning clutch 33, the intermediate shaft 32 is in rotation connection with the box body 1, and the other end of the intermediate shaft 32 extends into the box body 1 and is in transmission connection with the input shaft 21; the output shaft 41 is rotatably connected to the housing 1 and is in driving connection with the intermediate shaft 32. In the present embodiment, the auxiliary driving member 31 may be selected as an auxiliary transmission gear motor.

That is, in the initial stage of the start-up of the gear box, the auxiliary drive 31 is operated and the active drive is not operated, the auxiliary drive 31 transmits the motion and power to the output shaft 41 through the overrunning clutch 33 and the intermediate shaft 32, and a large torque required in the initial stage of the stirring can be obtained by selecting a different auxiliary drive 31. When the stirring medium period is entered, the active driving member is operated, the overrunning clutch 33 does not need an operation command, the inner and outer rings are automatically disengaged, and at this time, the auxiliary driving member 31 stops operating. The embodiment utilizes the automatic clutch function of the overrunning clutch 33 to facilitate the auxiliary transmission engagement or disengagement switching operation of the gear box, and has good reliability and high use safety.

Meanwhile, the output shaft 41 is of a hollow shaft structure, the output shaft 41 is configured to be directly connected with the working machine shaft through a key structure, and a coupling is not needed for connection, so that space is saved.

Specifically, as shown in fig. 2, the auxiliary drive assembly 3 further includes a coupling 34. The coupling 34 is coaxially connected to the output shaft of the auxiliary driving member 31, the coupling 34 is coaxially disposed with the overrunning clutch 33, the inner ring of the overrunning clutch 33 is sleeved and fixedly connected to the intermediate shaft 32, and the outer ring of the overrunning clutch 33 is connected to the coupling 34. That is, the inner ring of the overrunning clutch 33 is identical to the rotation speed and the rotation direction of the intermediate shaft 32, and the outer ring of the overrunning clutch 33 is identical to the rotation speed and the rotation direction of the coupling 34, i.e., the output shaft of the auxiliary drive 31. According to the working principle of the overrunning clutch 33, when there is no relative motion between the inner ring, the outer ring and the wedge block, that is, the steering is the same and the rotating speed is the same, the overrunning clutch 33 can transmit torque; otherwise, the slip state is referred to as overrun, and the overrun clutch 33 is automatically disengaged.

More specifically still, the auxiliary drive assembly 3 further comprises a connecting flange 35. The connecting flange 35 is connected between the fixed end of the auxiliary driving member 31 and the case 1, and the coupling member 34 and the overrunning clutch 33 are both located in the connecting flange 35. The connection flange 35 can support and position the auxiliary drive 31. Meanwhile, the connecting flange 35 can also provide protection, dust prevention and water prevention for parts such as the connecting shaft 34, the overrunning clutch 33 and the like, and the service life of the parts is prolonged.

More specifically, the auxiliary drive assembly 3 further includes a first bearing 36, a transparent cover 37, and a first oil seal 38. The box 1 is provided with a first bearing hole corresponding to the penetrating position of the intermediate shaft 32, and the first bearing 36 is clamped between the inner wall of the first bearing hole and the intermediate shaft 32. The transparent cover 37 is sleeved outside the intermediate shaft 32 and is connected to the box body 1, one side of the transparent cover 37, which is away from the box body 1, is connected with the connecting flange 35, and the first oil seal 38 is arranged between the transparent cover 37 and the intermediate shaft 32 so as to ensure the tightness in the box body 1.

Further, in order to ensure coaxiality when the transparent cover 37 is connected with the connecting flange 35, a positioning structure is further provided between the transparent cover 37 and the connecting flange 35. In this embodiment, an annular boss 371 is protruded from the upper portion of the transparent cover 37, and an inner spigot 351 is formed by protruding the bottom of the connection flange 35 from the annular boss. When the transparent cover 37 is connected with the connecting flange 35, the boss 371 extends into the inner spigot 351 to be matched with the inner spigot 351 in a positioning way, so that coaxiality between the transparent cover 37 and the connecting flange 35 can be ensured. Of course, in other embodiments, the inner spigot 351 may be concavely formed at the bottom of the connecting flange 35, and can be matched with the boss 371 on the transparent cover 37 in a positioning manner.

Optionally, with continued reference to fig. 2, the gearbox further comprises a drive gear set 5. The end of the input shaft 21 extending into the box 1 is in driving connection with the intermediate shaft 32 through the driving gear set 5. Specifically, the transmission gear set 5 includes an input bevel gear and an output bevel gear which are in meshed connection, the input bevel gear is sleeved and fixedly connected to the input shaft 21, and the output bevel gear is sleeved and fixedly connected to the intermediate shaft 32. The bevel gear can bear larger torque and load, has strong bearing capacity, stable transmission of the bevel gear and small vibration and noise.

Optionally, as shown in fig. 2, the gearbox further comprises an output gear 42. The shaft section of the intermediate shaft 32 is provided with a tooth structure 321, the output gear 42 is sleeved and fixedly connected with the output shaft 41, and the output gear 42 is meshed and connected with the tooth structure 321 on the intermediate shaft 32 so as to transmit power.

Specifically, the gearbox further comprises a third bearing 43, an output end cap 44 and a third oil seal 45. A second bearing hole is formed in the box body 1 at a position corresponding to the output shaft 41, and a third bearing 43 is clamped between the inner wall of the second bearing hole and the output shaft 41. The output end cover 44 is sleeved outside the output shaft 41 and connected to the box 1, and the third oil seal 45 is arranged between the output end cover 44 and the output shaft 41 so as to ensure the tightness in the box 1.

Preferably, two third oil seals 45 are provided between the output end cap 44 and the output shaft 41. The output end adopts double oil seals, so that the oil leakage prevention performance is improved, and the sealing is more reliable.

Optionally, as shown in fig. 1, the gearbox further comprises a cooling and lubrication assembly 6. The oil outlet of the cooling and lubricating assembly 6 is communicated with the inner cavity of the box body 1 so as to lubricate the parts in the box body 1. The cooling and lubricating assembly 6 in this embodiment is obtained by outsourcing, and is mounted on the side of the box body 1, the oil outlet of the cooling and lubricating assembly 6 is communicated with the oil inlet hole at the top of the box body 1, and the oil return hole of the cooling and lubricating assembly 6 is communicated with the oil drain hole at the bottom of the box body 1. The cooling and lubricating assembly 6 can lubricate each bearing and gear engagement part in the box body 1, thereby ensuring the use safety of the gearbox and prolonging the service life.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. The gearbox for the mixer comprises a box body (1) and an active driving assembly (2), wherein the active driving assembly (2) comprises an active driving piece and an input shaft (21), the input shaft (21) is rotatably connected with the box body (1), one end of the input shaft (21) extends out of the box body (1) to be connected with the active driving piece, and the other end of the input shaft extends into the box body (1); characterized in that the gearbox further comprises:

the auxiliary driving assembly (3) comprises an auxiliary driving piece (31), an intermediate shaft (32) and an overrunning clutch (33), wherein the fixed end of the auxiliary driving piece (31) is connected with the box body (1), the output end of the auxiliary driving piece (31) is in transmission connection with one end of the intermediate shaft (32) through the overrunning clutch (33), the intermediate shaft (32) is in rotation connection with the box body (1), and the other end of the intermediate shaft (32) extends into the box body (1) and is in transmission connection with the input shaft (21);

the output shaft (41), output shaft (41) rotate connect in box (1), and with jackshaft (32) transmission connection, output shaft (41) are hollow shaft structure, output shaft (41) are configured to be directly with the work machine shaft of mixer through key structure.

2. Gearbox for a mixer according to claim 1, characterized in that the auxiliary drive assembly (3) further comprises a shaft coupling (34), the shaft coupling (34) being coaxially connected to the output shaft of the auxiliary drive (31), the shaft coupling (34) being coaxially arranged with the overrunning clutch (33), the inner ring of the overrunning clutch (33) being sleeved and fixedly connected to the intermediate shaft (32), the outer ring of the overrunning clutch (33) being connected to the shaft coupling (34).

3. Gearbox for a mixer according to claim 2, characterized in that the auxiliary drive assembly (3) further comprises a connection flange (35), the connection flange (35) being connected between the fixed end of the auxiliary drive (31) and the box (1), the shaft (34) and the overrunning clutch (33) being both located in the connection flange (35).

4. A gearbox for a mixer according to claim 3, wherein the auxiliary drive assembly (3) further comprises a first bearing (36), a transparent cover (37) and a first oil seal (38), wherein the box body (1) is provided with a first bearing hole, the first bearing (36) is clamped between the inner wall of the first bearing hole and the intermediate shaft (32), the transparent cover (37) is sleeved outside the intermediate shaft (32) and connected to the box body (1), one side of the transparent cover (37) away from the box body (1) is connected with the connecting flange (35), and the first oil seal (38) is arranged between the transparent cover (37) and the intermediate shaft (32).

5. Gearbox for a mixer according to claim 4, characterized in that a positioning structure is provided between the transparent cover (37) and the connection flange (35), said positioning structure being configured to maintain the coaxiality of the transparent cover (37) with the connection flange (35).

6. Gearbox for a mixer according to claim 1, characterized in that it also comprises a transmission gear set (5), the end of the input shaft (21) that extends into the box (1) being in transmission connection with the intermediate shaft (32) via the transmission gear set (5).

7. Gearbox for a mixer according to claim 6, characterized in that the drive gear set (5) comprises an input bevel gear and an output bevel gear in meshed connection, the input bevel gear being nested and fixedly connected to the input shaft (21), the output bevel gear being nested and fixedly connected to the intermediate shaft (32).

8. Gearbox for a mixer according to claim 1, characterized in that it further comprises an output gear (42), the shaft section of the intermediate shaft (32) is provided with a tooth structure (321), the output gear (42) is sleeved and fixedly connected to the output shaft (41), and the output gear (42) is in meshed connection with the tooth structure (321).

9. Gearbox for a mixer according to claim 1, characterized in that the active drive assembly (2) further comprises a cone housing (22) and a second bearing (23), the cone housing (22) being arranged coaxially with the input shaft (21), the second bearing (23) being sandwiched between the cone housing (22) and the input shaft (21), the cone housing (22) being connected to the housing (1).

10. Gearbox for a mixer according to any of the claims 1-9, characterized in that it further comprises a cooling and lubrication assembly (6), the oil outlet of which cooling and lubrication assembly (6) communicates with the inner cavity of the box (1).