Gear shifting speed reducer for fluid control equipment

Abstract

The utility model provides a gear shifting speed reducer for fluid control equipment, which relates to the technical field of speed reducing mechanical equipment and comprises an outer shell, a first speed reducing cavity and a second speed reducing cavity are arranged in the outer shell, and a secondary sun gear, a secondary planet gear, a planet carrier, a primary sun gear, a primary planet gear and a first transmission gear are arranged in the first speed reducing cavity. A second input shaft is rotationally arranged in the second speed reduction cavity, the second input shaft is sleeved with a second transmission gear, and the second transmission gear is meshed with the outer teeth of the first transmission gear. The gear shifting speed reducer has the advantages that when the first input shaft of the gear shifting speed reducer works, the first transmission gear is fixed, and the planetary speed reduction structure in the first speed reduction cavity works; when the second input shaft works, the first transmission gear and the second transmission gear are in meshing transmission. The two input shafts of the gear shifting speed reducer work independently, so that the output shaft can output different rotating speeds and torques, the gear shifting process of the speed reducer is conveniently achieved, gear shifting is reliable, and efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of speed reduction mechanical equipment, in particular to a gear-shift speed reducer for fluid control equipment. Background Art

[0002] In the modern industrial field, reducers are important transmission components in mechanical equipment. Their function is to reduce the output speed and increase the torque. Reducers are widely used. In the fluid production process, two products of different specifications can be produced under the same production conditions with different process requirements. Different process requirements require the reducer to have two output speeds. At this time, although the reducer can output two speeds by using equipment such as variable frequency motors and frequency converters, the investment cost and maintenance cost of the frequency conversion equipment are high. At present, the gear shifting of the reducer is mostly achieved by a shift fork shifting device. The shift fork shifting device usually adopts two left and right shift forks and a shift rod installed on the same core shaft. The left and right shift forks are connected to the core shaft through a key or a tension sleeve. However, both of these connection methods have certain disadvantages. The former requires that the keyway positions of the left and right shift forks be consistent, and the keyway positions on the corresponding core shafts must also be consistent; the latter has a relatively complex structure and is troublesome to assemble and maintain. In short, both connection methods have relatively high requirements on the processing accuracy of parts, and are troublesome to install and debug, which affects the shifting effect of the reducer, thereby affecting the operation of the entire transmission system. The reliability is low, which seriously affects the service life of the reducer, and there are certain safety hazards when the operator uses it. Utility Model Content

[0003] In view of this, in order to enable the reduction device to shift and output two different speeds and improve the shifting efficiency and reliability of the reducer, the utility model provides a shift reducer for fluid control equipment, including:

[0004] An outer shell is provided with a first deceleration chamber and a second deceleration chamber, the second deceleration chamber is located on the side of the first deceleration chamber, two ends of the first deceleration chamber are respectively an input end and an output end, a first input shaft is rotatably provided in the input end, and an output shaft is rotatably provided in the output end;

[0005] A secondary sun gear, a secondary planetary gear, a planet carrier, a primary sun gear, a primary planetary gear and a first transmission gear are arranged in the first reduction chamber; a first mounting inner hole is arranged at the end of the first input shaft, the secondary sun gear is pressed into the first mounting inner hole, and the secondary sun gear can rotate synchronously with the first input shaft; the secondary planetary gear is meshed with the secondary sun gear, the planet carrier is provided with a secondary pin shaft perpendicular to the end face of the planet carrier, the secondary planetary gear is rotatably sleeved on the secondary pin shaft, a second mounting inner hole is arranged in the middle part of the planet carrier, the primary sun gear is arranged in the second mounting inner hole of the planet carrier, the primary sun gear can rotate synchronously with the planet carrier, the primary sun gear is meshed with the primary planetary gear, the inner ring and the outer ring of the first transmission gear are respectively provided with internal teeth and external teeth, and the secondary planetary gear is meshed with the internal teeth of the first transmission gear; a primary pin shaft is arranged on the output shaft, and the primary planetary gear is sleeved on the primary pin shaft;

[0006] And a second input shaft rotatably arranged in the second deceleration chamber, the second input shaft is sleeved with a second transmission gear, the second transmission gear can rotate synchronously with the second input shaft, and the second transmission gear is meshed with the outer teeth of the first transmission gear.

[0007] Furthermore, the outer shell includes a left box body and a right box body connected to the left box body, the left box body is provided with a first accommodating chamber and a second deceleration chamber arranged in parallel, the right box body is provided with a second accommodating chamber, the first accommodating chamber and the second accommodating chamber are connected to form the first deceleration chamber.

[0008] Furthermore, the first input shaft and the output shaft are coaxially arranged.

[0009] Furthermore, the left box is connected to a first drive motor and a second drive motor, the first drive motor is connected to the first input shaft, and the second drive motor is connected to the second input shaft.

[0010] Furthermore, the input end and the output end of the first deceleration chamber are respectively provided with a front flange and a rear flange.

[0011] Furthermore, the left box body and the right box body are both provided with mounting stoppers, and the front flange and the rear flange are respectively connected to the mounting stoppers of the left box body and the right box body, and are both fixed by hexagonal screws.

[0012] Furthermore, the number of the first-stage planetary gear, the second-stage planetary gear, the first-stage pin shaft, and the second-stage pin shaft are all three.

[0013] Furthermore, the primary pin is connected to the output shaft by means of an interference fit, and the secondary pin is connected to the planet carrier by means of an interference fit.

[0014] Furthermore, both ends of the first transmission gear are rotatably arranged in the first reduction chamber via single-row deep groove ball bearings.

[0015] Furthermore, both ends of the second transmission gear are rotatably arranged in the second speed reduction chamber through single-row deep groove ball bearings.

[0016] The beneficial effects of the gear-shift reducer for fluid control equipment of the utility model are as follows:

[0017] (1) The gear-shifting reducer has a first input shaft, a second input shaft and an output shaft, wherein the first input shaft is connected to the output shaft through a planetary reduction structure, and the second input shaft is externally meshed with the first transmission gear in the planetary reduction structure through a second transmission gear. When the first input shaft is working, the first transmission gear is fixed and the planetary reduction structure is working; when the second input shaft is working, the first transmission gear is meshed with the second transmission gear for transmission, that is, when the first input shaft and the second input shaft of the gear-shifting reducer work independently, the output shaft outputs different speeds and torques, thereby conveniently realizing the gear shifting process of the reducer with high efficiency.

[0018] (2) The gear shift reducer has a novel structure and can achieve different speed adjustments through different motors. It is easy to operate and has high reliability. At the same time, the gear shift reducer has a compact structure, smooth transmission, and simple assembly. After shifting, it uses the external meshing transmission between the first transmission gear and the second transmission gear to achieve gear shifting without power impact, shortening the gear shifting stroke and synchronization time, which not only saves costs but also improves the working efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a cross-sectional view of a gear-shift reducer for fluid control equipment according to an embodiment of the utility model.

[0020] In the above figure: 1-left housing, 11-right housing, 12-front flange, 13-rear flange, 14-first drive motor, 15-second drive motor, 2-first input shaft, 3-second input shaft, 4-output shaft, 41-primary pin shaft, 5-secondary sun gear, 51-secondary planetary gear, 6-planet carrier, 61-secondary pin shaft, 7-primary sun gear, 71-primary planetary gear, 8-first transmission gear, 81-second transmission gear. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model clearer, the implementation mode of the utility model will be further described below in conjunction with the accompanying drawings.

[0022] Please refer to Figure 1 The utility model provides a gear-shift reducer for a fluid control device, comprising:

[0023] Outer shell.

[0024] The outer shell includes a left box 1 and a right box 11, wherein the left box 1 is a double-cavity structure, wherein the left box is provided with a first accommodating chamber and a second deceleration chamber arranged in parallel, wherein the first accommodating chamber and the second deceleration chamber are connected at the sides, wherein the right box 11 is provided with a second accommodating chamber, and the left box 1 and the right box 11 are connected together to form the outer shell, wherein the end of the first accommodating chamber and the end of the second accommodating chamber are connected to each other to form a first deceleration chamber, i.e., the second deceleration chamber is located at the side of the first deceleration chamber, and the two ends of the first deceleration chamber are respectively an input end and an output end. The input end and the output end of the first deceleration chamber are respectively provided with a front flange 12 and a rear flange 13.

[0025] A first input shaft 2 is rotatably provided in the input end of the first deceleration chamber through a bearing, an output shaft 4 is rotatably provided in the output end of the first deceleration chamber through a bearing, and a second input shaft 3 is rotatably provided in the second deceleration chamber. In this embodiment, a first drive motor 14 and a second drive motor 15 are connected to the left housing, the first drive motor 14 is connected to the first input shaft 2, and the second drive motor 15 is connected to the second input shaft 3.

[0026] The first reduction chamber is provided with a secondary sun gear 5, a secondary planetary gear 51, a planet carrier 6, a primary sun gear 7, a primary planetary gear 71 and a first transmission gear 8, wherein the secondary sun gear 5, the secondary planetary gear 51, the planet carrier 6, the primary sun gear 7 and the primary planetary gear 71 are arranged in sequence; the number of the secondary planetary gear 51 and the number of the primary planetary gear 71 are both multiple.

[0027] The end of the first input shaft 2 is provided with a first mounting inner hole, and the secondary sun gear 5 is pressed into the first mounting inner hole, and the secondary sun gear 5 can rotate synchronously with the first input shaft 2; the secondary planetary gear 51 is meshed with the secondary sun gear 5, and the planetary carrier 6 is provided with a secondary pin shaft 61 perpendicular to the end face of the planetary carrier 6, and the secondary planetary gear 51 is rotatably sleeved on the secondary pin shaft 61, and the middle part of the planetary carrier 6 is provided with a second mounting inner hole, and the primary sun gear 7 is arranged in the second mounting inner hole of the planetary carrier 6, and the primary sun gear 7 can rotate synchronously with the planetary carrier, and the primary sun gear 7 is meshed with multiple primary planetary gears 71, and the inner wall of the right case body is provided with a circle of gear teeth, and all the primary planetary gears 71 are meshed with the gear teeth on the inner wall of the right case body.

[0028] The inner ring and the outer ring of the first transmission gear 8 are respectively provided with internal teeth and external teeth, and the secondary planetary gear 51 is meshed with the internal teeth of the first transmission gear 8 .

[0029] The output shaft 4 is provided with a primary pin shaft 41 , and the primary planetary gear 71 is sleeved on the primary pin shaft 41 . In this embodiment, the first input shaft 2 is coaxially arranged with the output shaft 4 .

[0030] The second input shaft 3 is sleeved with a second transmission gear 81 . The second transmission gear 81 can rotate synchronously with the second input shaft. The second transmission gear 81 is meshed with the external teeth of the first transmission gear 8 .

[0031] In this embodiment, the first input shaft 2 and the second input shaft 3 are connected to the first drive motor 14 and the second drive motor 15 respectively, wherein when the gear shift reducer is working, the first drive motor 14 and the second drive motor 15 work independently, that is, when the first drive motor 14 starts, the second drive motor 15 stops; when the second drive motor 15 starts, the first drive motor 14 stops. Specifically, when the first drive motor 14 is working, the first transmission gear 8 and the second transmission gear 81 are both fixed, at this time, the first drive motor 14 drives the first input shaft 2 and the secondary sun gear 5 to rotate, and the rotation of the secondary sun gear 5 drives all the secondary planetary gears 51 to rotate, thereby driving the planet carrier 6 and the primary sun gear 7 installed in the second mounting inner hole of the planet carrier 6 to rotate through the secondary pin shaft 61; the primary sun gear 7 rotates, driving all the primary planetary gears 71 to rotate, and then driving the output shaft 4 to rotate through the primary pin shaft; that is, when the first drive motor 14 is working, the first drive motor 14 is decelerated through the two-stage planetary reduction mechanism.

[0032] At this time, after the gear shift, the second drive motor 15 starts, and the first drive motor 14 stops. At this time, the secondary sun gear 5 is fixed, and the second drive motor 15 drives the second transmission gear 81 to rotate, and the second transmission gear 81 drives the first transmission gear 8 to rotate, so that all the secondary planetary gears 51 rotate, and then drive the output shaft 4 to rotate, that is, when the second drive motor 15 is working, the second drive motor 15 is driven by the second transmission gear 81, the first transmission gear 8 meshing transmission mechanism and the primary planetary reduction mechanism.

[0033] In the above process, when the first input shaft 2 and the second input shaft 3 of the gear-shifting reducer work independently, the output shaft 4 outputs different speeds and torques before and after the gear shifting, thereby conveniently realizing the gear shifting process of the reducer with high efficiency. Moreover, after the gear shifting reducer shifts, the external meshing transmission of the first transmission gear 8 and the second transmission gear 81 is used to realize the gear shifting without power impact, which can shorten the gear shifting stroke and synchronization time.

[0034] Preferably, the left box body and the right box body are both provided with mounting stoppers, and the front flange and the rear flange are respectively connected to the mounting stoppers of the left box body and the right box body, and are both fixed by hexagonal screws.

[0035] Preferably, the number of the primary planetary gear 71, the secondary planetary gear 51, the primary pin shaft 41, and the secondary pin shaft 61 are all three. The primary pin shaft 41 is connected to the output shaft by interference fit, and the secondary pin shaft 61 is connected to the planet carrier 6 by interference fit.

[0036] Preferably, both ends of the first transmission gear 8 are rotatably disposed in the first reduction chamber via single-row deep groove ball bearings. Both ends of the second transmission gear 81 are rotatably disposed in the second reduction chamber via single-row deep groove ball bearings.

[0037] In this document, the directional words such as front, back, top, and bottom are defined by the positions of the components in the drawings and the positions of the components relative to each other, and are only for the sake of clarity and convenience in expressing the technical solution. It should be understood that the use of the directional words should not limit the scope of protection claimed in this application.

[0038] In the absence of conflict, the above embodiments and features in the embodiments may be combined with each other.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gear-shift reducer for a fluid control device, characterized in that: include: An outer shell is provided with a first deceleration chamber and a second deceleration chamber, the second deceleration chamber is located on the side of the first deceleration chamber, two ends of the first deceleration chamber are respectively an input end and an output end, a first input shaft is rotatably provided in the input end, and an output shaft is rotatably provided in the output end; A secondary sun gear, a secondary planetary gear, a planet carrier, a primary sun gear, a primary planetary gear and a first transmission gear are arranged in the first reduction chamber; a first mounting inner hole is arranged at the end of the first input shaft, the secondary sun gear is pressed into the first mounting inner hole, and the secondary sun gear can rotate synchronously with the first input shaft; the secondary planetary gear is meshed with the secondary sun gear, the planet carrier is provided with a secondary pin shaft perpendicular to the end face of the planet carrier, the secondary planetary gear is rotatably sleeved on the secondary pin shaft, a second mounting inner hole is arranged in the middle part of the planet carrier, the primary sun gear is arranged in the second mounting inner hole of the planet carrier, the primary sun gear can rotate synchronously with the planet carrier, the primary sun gear is meshed with the primary planetary gear, the inner ring and the outer ring of the first transmission gear are respectively provided with internal teeth and external teeth, and the secondary planetary gear is meshed with the internal teeth of the first transmission gear; a primary pin shaft is arranged on the output shaft, and the primary planetary gear is sleeved on the primary pin shaft; And a second input shaft rotatably arranged in the second deceleration chamber, the second input shaft is sleeved with a second transmission gear, the second transmission gear can rotate synchronously with the second input shaft, and the second transmission gear is meshed with the outer teeth of the first transmission gear.

2. A gear-shift reducer for fluid control equipment according to claim 1, characterized in that: The outer shell includes a left shell and a right shell connected to the left shell. The left shell is provided with a first accommodating chamber and a second deceleration chamber arranged in parallel. The right shell is provided with a second accommodating chamber. The end of the first accommodating chamber is connected with the end of the second accommodating chamber to form the first deceleration chamber.

3. The gear-shift reducer for fluid control equipment according to claim 1, characterized in that: The first input shaft is coaxially arranged with the output shaft.

4. A gear-shift reducer for fluid control equipment according to claim 2, characterized in that: The left box is connected to a first drive motor and a second drive motor. The first drive motor is connected to the first input shaft, and the second drive motor is connected to the second input shaft.

5. The gear-shift reducer for fluid control equipment according to claim 2, characterized in that: The input end and the output end of the first deceleration chamber are respectively provided with a front flange and a rear flange.

6. A gear-shift reducer for fluid control equipment according to claim 5, characterized in that: The left box body and the right box body are both provided with mounting stoppers, the front flange and the rear flange are respectively connected to the mounting stoppers of the left box body and the right box body, and the front flange and the rear flange are both fixed by hexagonal screws.

7. The gear-shift reducer for fluid control equipment according to claim 5, characterized in that: The number of the first-stage planetary gear, the second-stage planetary gear, the first-stage pin shaft and the second-stage pin shaft are all three.

8. The gear-shift reducer for fluid control equipment according to claim 7, characterized in that: The primary pin is connected to the output shaft by means of interference fit, and the secondary pin is connected to the planet carrier by means of interference fit.

9. The gear-shift reducer for fluid control equipment according to claim 1, characterized in that: Both ends of the first transmission gear are rotatably arranged in the first speed reduction chamber through single-row deep groove ball bearings.

10. The gear-shift reducer for fluid control equipment according to claim 1, characterized in that: Both ends of the second transmission gear are rotatably arranged in the second speed reduction chamber through single-row deep groove ball bearings.

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