RU220244U1 - GEARBOX - Google Patents

Abstract

A device is claimed for a combined power take-off gearbox of a food processor, consisting of a housing, an input shaft, a planetary gearbox, first and second output shafts, characterized in that the gearbox is made according to the scheme of a planetary gearbox, including a sun gear, a ring gear, a carrier and a single satellite gear, an input the shaft is rigidly connected to the first output shaft and the sun gear of the gearbox, the second output shaft is connected to the satellite gear shaft. The axis of rotation of the second output shaft is deflected outward by an angle of 3-8°. The carrier is made with a counterweight. The gear ratio between the sun and ring gears is 1:4.26. The axis of rotation of the second output shaft is deflected outward by an angle of 6.5°.

Description

The claimed technical solution relates to kitchen appliances and specifically to food processors - devices for mixing liquid and consistency mixtures and media.

State of the art

Devices are known from the prior art that contain a mechanism for driving attachments that require a complex trajectory of movement.

Known is the patent US 4065811 A (Domestic appliance for conditioning food such as salads (application US 7381787 6A 1976-11-02)), disclosing a drive device for a food processor attachment for mixing consistency products, including salads.

The nozzle with its own gearbox is connected to the power output shaft of the combine. Due to its own gearbox, it allows you to rotate the attached activator attachment along a complex trajectory - around its own axis and at the same time precess around the axis of the drive shaft.

The disadvantage of the design is some cumbersomeness and the need to disconnect the attachment containing the entire mechanism from the combine when switching to another application.

In addition, the design is strongly focused specifically on working with salads, and less so on working with flour products, which greatly reduces its versatility.

Known patent GB 205698 A (Improvements in machines for the mixing, aerating and like treatment of cake-making and other materials), revealing a mechanism for mixing consistency products, having a power drive, capable of performing complex movements - rotation around its own axis, rotational movement along orbital trajectory with the ability to change the angle of inclination of the rotation axis.

The disadvantage of the design is its bulkiness. Another disadvantage is the difficulty or impossibility of disconnecting from the power drive, i.e. narrow drive specialization.

The patent CN 103277465 A (Planetary drive structure of stirrer) is known, revealing a mechanism for mixing consistency products, capable of performing complex movements - rotation around its own axis, rotational movement along an orbital trajectory. The output shaft is driven by satellite gears.

The disadvantage of the design is that the gearbox does not have a direct output shaft for attachments that do not require a complex movement path.

The patent CN 104367215 A (Differential multi-drive device) is known, revealing a mechanism for mixing consistency products, capable of performing complex movements - rotation around its own axis, rotational movement along an orbital trajectory. The output shaft is directly driven by the input shaft and the carrier, but is not driven by the pinion gear.

There is a well-known patent EP 3912537 A1 (KITCHEN DEVICE AND SYSTEM FOR FOOD PREPARATION WITH COPLANAR DRIVE), revealing a mechanism for mixing consistency products, capable of performing complex movements - rotation around its own axis, rotational movement along an orbital trajectory. There is a drive from the carrier and from the satellite gear, which is driven into rotation by the ring gear. No direct drive from the input shaft.

The patent GB 2453546 A (Planetary drive system) is known, revealing a mechanism for mixing consistency products, capable of performing complex movements - rotation around its own axis, rotational movement along an orbital trajectory. There are outputs from the satellite gears - parallel to the axis and at an angle (precessing). There is no direct exit without reduction.

There is a well-known patent CN 210276954 U (Chef machine dough kneading hook and eggbeater interface separation structure), revealing a mechanism for mixing consistency products, capable of performing complex movements - rotation around its own axis, rotational movement along an orbital trajectory. There are two output shafts parallel to the axis of the input shaft. Output shafts are from satellite gears. There is no direct output from the input shaft without reduction.

There is a known patent RU 2513380 C2 (KITCHEN APPLIANCE WITH PLANETARY GEAR), revealing a mechanism for mixing consistency products, capable of performing complex movements - rotation around its own axis, rotational movement along an orbital trajectory. The gearbox includes a planetary gear with one or more satellite gears. The output shaft drive is direct and from the carrier.

The technical solution for patent application No. US 4065811 A was selected as a prototype.

The technical result achieved by the claimed design is an increase in the completeness of processing the volume of mixed dough by the combine activator, a reduction, up to the complete disappearance, of unprocessed areas.

The problem solved by the described design is to obtain a device with improved consumer qualities, as well as increase the reliability of the device.

The specified technical result cannot be obtained by known methods and devices.

ACCEPTED NOTATIONS

1 - gear housing

2 - input shaft

3 - ring gear

4 - carrier, carrier elements

4a - counterweight

5 - second output shaft

6 - first output shaft

7 - nozzle

8 - satellite gear

9 - sun gear

DESCRIPTION OF GRAPHIC MATERIAL

Figure 1 shows a layout diagram of the gearbox (the housing is not shown).

Figure 2 shows a cross-sectional diagram of a gearbox with an attached activator for mixing consistent products.

Figure 3 shows a cross-sectional diagram of the gearbox with an attached screw for a meat grinder.

Figure 4 shows a diagram of the gearbox assembly from large components.

Figure 5 shows a detailed diagram of the gearbox assembly from parts.

Figure 6 shows the trajectories of movement using the example of two activator points (a) and (b).

Figure 7 shows an example of the trajectories of movement of the activator elements, illustrating the degree of sweeping of the volume of the mixed product.

SHORT DESCRIPTION

The declared technical result was achieved through the use of the proposed gearbox design, including an electric drive, including a planetary gearbox modified in comparison with the classical simplified design, input (drive) and output (driven) shafts. The use of a sun gear as a drive and driven shaft allows for direct transmission to drive attachments that do not require a complex rotation path.

An essential feature is that as one of the outputs, a satellite gear shaft is used, deviated from parallelism to the axis of the sun gear shaft by a certain angle outward, which makes it possible to obtain a complex movement of the connected activator. The activator receives rotation around its axis and at the same time - precessing movement around the axis of the sun gear.

DETAILED DESCRIPTION

The declared technical result was achieved, among other things, due to the simplification of the design of the gearbox, including with an electric drive, including a planetary gearbox with a modified, compared to the classical, simplified design, input (drive) and output (driven) shafts.

The classic design of the planetary gearbox has been modified to simplify it. The single satellite gear interacts with the sun and orbital (ring) gears. The satellite gear shaft (second output shaft) is one of the output shafts of the gearbox, designed to connect the activator, which performs a complex movement for mixing consistency substances and mixtures. The sun gear shaft (the first output shaft) is the drive shaft of the gearbox and, at the same time, the output shaft for attachments that do not require complex movement.

An essential feature is that the satellite gear shaft is used as the second output shaft, deflected from parallelism to the sun gear rotation axis by a small angle - usually within 3-8 degrees outward, towards the periphery, which makes it possible to obtain complex movement of the connected activator. The activator receives rotation around its axis and at the same time - precessing movement around the axis of the sun gear.

By selecting the gear ratio, the angle of deflection of the activator rotation axis and the spatial configuration of the activator, a high or close to complete degree of sweeping of the entire volume of the mixed consistency product, substance or mixture of substances by the activator elements is obtained.

For the selected gear ratio from the sun gear to the ring gear 1:4.26, taking into account the geometric configuration of the activator, the inclination angle of the satellite gear shaft axis is equal to 6.5 degrees.

Figure 6 shows the trajectories of movement using the example of two points of the activator (a) and (b), and also Figure 7 shows an example of the trajectories of movement of the activator elements, illustrating the degree of sweeping the volume of the mixed product.

The inventive design also allows the simultaneous use of two activators for better mixing, for example, of dough. To do this, it is necessary at the design stage to select such parameters of the sun and satellite gears in order to synchronize the mutual movement of the activators in order to avoid mutual interference, as well as to develop the geometric parameters of both activators for maximum efficiency of their joint work.

The coverage area of the stirred medium is considered to be the path through which the activator elements pass plus the immediate vicinity of each activator element, the size of which varies depending on the degree of viscosity of the stirred medium. For baking dough and a number of other mixtures and substances most often mixed in everyday life, the closest vicinity is considered to be the area in the vicinity of up to 6 mm from the activator element.

The device works as follows.

The device is located in housing 1.

Input shaft 2 is connected to a drive, which can be either manual (for example, with a multiplier) or electric.

The output of the gearbox is two shafts 5 and 6. For attachments that do not require complex movement, only rotation, the output shaft 6 is connected directly to the input shaft 2. The sun gear 9 of the planetary gearbox is fixed to this shaft. A single satellite gear 8 engages with the sun gear 9. The satellite gear 8 is connected to the carrier 4. The satellite gear 8 also engages with the ring gear 3 (epicyclic wheel). The ring gear 3 is fixedly fixed on the gearbox housing 1. The axis of the satellite gear 8 shaft may not be parallel to the axis of the input shaft 2 and the axis of the direct output shaft 6, but is deflected towards the periphery by an angle of 3 - 8 degrees, depending on the spatial configuration of the activator 7 , geometric parameters of the container, gear ratios of the gears involved in the movement. Since satellite gear 8 is the only satellite gear of the gearbox, in order to avoid increased vibrations when working on the carrier, a counterweight 4a is added.

Shaft 5 of satellite gear 8 is the output shaft for attachments 7 that require complex movements.

The ratio of the number of gear teeth involved in meshing and the geometric configuration of the activator make it possible to achieve complete coverage of the entire volume of the mixed medium.

The claimed device is industrially applicable, since each element, unit, unit can be manufactured industrially under serial and mass production conditions.

Claims (5)

1. A device for a combined power take-off gearbox of a food processor, consisting of a housing, an input shaft, a planetary gearbox, the first and second output shafts, characterized in that the gearbox is made according to the scheme of a planetary gearbox, including a sun gear, a ring gear, a carrier and a single satellite gear, the input shaft is rigidly connected to the first output shaft and the sun gear of the gearbox, the second output shaft is connected to the satellite gear shaft. 2. The combined gearbox device according to claim 1, characterized in that the axis of rotation of the second output shaft is deflected outward by an angle of 3-8°. 3. The combined gearbox device according to claim 1, characterized in that the carrier is made with a counterweight. 4. The combined gearbox device according to claim 1, characterized in that the gear ratio between the sun and ring gears is 1:4.26. 5. The combined gearbox device according to claim 4, characterized in that the axis of rotation of the second output shaft is deflected outward by an angle of 6.5°.