Transmission device of heavy high-speed centrifugal machine

Abstract

The utility model discloses a heavy high-speed centrifugal machine transmission device which comprises a motor and a main shaft connected with a centrifugal machine. Comprising a speed reducer, a transmission shaft, a clutch and a transmission assembly, and the speed reducer is provided with a high-speed gear and a low-speed gear; the speed reducer is connected between the motor and the transmission shaft, the clutch is of an existing structure and is divided into two parts, one part is connected with the transmission shaft, and the other part is connected with the transmission assembly. When the centrifugal machine is started, the speed reducer is in a low gear, and the two parts of the clutch are in a suction state; before the speed reducer is switched to the high gear from the low gear, the clutch is switched to the separation state from the pull-in state; and after the gear of the speed reducer is switched to the high gear and the speed difference value of the two parts of the clutch is within the set range, the clutch is switched to the pull-in state from the separation state. According to the transmission device, the speed reducer with the gear switching function is matched with the clutch, the transmission requirement of the centrifugal machine large in load and high in speed is met, meanwhile, the arrangement form of the transmission device is simplified, the size of the transmission device is reduced, and the transmission device is convenient to install and use.

Description

TECHNICAL FIELD

[0001] The utility model relates to centrifuge equipment technical field, concretely relates to heavy -duty high speed centrifuge transmission. BACKGROUND

[0002] The current traditional horizontal centrifuge load capacity is low, and the transmission device is prone to unstable operation under heavy load and high speed operation, which leads to machine vibration, and the product is also prone to quality problems. With the widening of the application range of centrifuges, the technical requirements of stable operation under heavy load and high speed are put forward for centrifuge transmission devices in the fields of aviation, smelting and other industries.

[0003] Therefore, how to provide a transmission device special for heavy -duty high speed centrifuge, which meets the requirements of strong load capacity and stable output under high speed operation is a problem to be solved by the person skilled in the art. INVENTION CONTENTS

[0004] In view of the above defects in the prior art, a heavy -duty high speed centrifuge transmission device is provided, which realizes stable operation of the centrifuge under heavy load and high speed operation by reasonably switching the transmission speed and torque.

[0005] The utility model discloses a technical scheme adopted to solve the above technical problems:

[0006] The heavy -duty high speed centrifuge transmission device comprises a motor and a main shaft connected with a centrifuge, and comprises a speed reducer, a transmission shaft, a clutch and a transmission assembly, the speed reducer is provided with a high speed gear and a low speed gear, the speed reducer is connected between the motor and the transmission shaft, the clutch adopts the existing structure and is divided into two parts, one part is connected with the transmission shaft, and the other part is connected with the transmission assembly.

[0007] When the centrifuge starts, the speed reducer is in the low gear, and the two parts of the clutch are in the attraction state; before the speed reducer is switched from the low gear to the high gear, the clutch is switched from the attraction state to the separation state; after the speed reducer is switched to the high gear and the speed difference of the two parts of the clutch is within the set range, the clutch is switched from the separation state to the attraction state.

[0008] According to the above technical scheme, one end of the transmission shaft is connected with the output shaft of the speed reducer, and the other end is provided with a transmission shaft mounting seat, the transmission shaft is rotatably connected to the transmission shaft mounting seat through a bearing; one part of the transmission assembly is connected with the main shaft, and the other part of the transmission assembly is rotatably connected to the transmission shaft; one part of the clutch is fixed on the transmission shaft, and the other part of the clutch is fixed on the rotating part of the transmission assembly.

[0009] According to the above technical scheme, the transmission assembly adopts gear transmission, or chain transmission, or belt transmission.

[0010] According to the technical scheme, the transmission assembly comprises a large pulley fixed on the main shaft, a small pulley rotatably connected to the transmission shaft, and a synchronous belt connected between the large pulley and the small pulley.

[0011] According to the technical scheme, the synchronous belt is a toothed belt, the large pulley and the main shaft are connected through a flat key, and the small pulley is rotatably connected to the outer side of the transmission shaft through the first bearing arranged on the left side, the first shaft sleeve arranged in the middle, and the second bearing arranged on the right side.

[0012] According to the technical scheme, the transition disc is further provided, the first threaded hole is arranged on the clutch, the first bolt connection through hole matched with the first threaded hole is arranged on the transition disc, the second threaded hole is arranged on the transition disc, and the second bolt connection through hole matched with the second threaded hole is arranged on the small pulley; the small pulley and the transition disc are connected through the threaded fastener, and the transition disc and a part of the clutch are connected through the threaded fastener; and a gap is left between the transition disc and the transmission shaft.

[0013] According to the technical scheme, the inner hole is arranged on the end head of the transmission shaft connected with the speed reducer, and the output shaft of the speed reducer is fixedly connected in the inner hole through a flat key; and the other part of the clutch is fixedly connected on the outer wall of the transmission shaft through a flat key.

[0014] According to the technical scheme, the transmission shaft mounting seat is further provided, the platform and the transmission shaft mounting seat are arranged on the support seat, and the motor and the speed reducer are fixedly mounted on the platform; the bearing hole is arranged in the transmission shaft mounting seat, and the other end of the transmission shaft is mounted in the transmission shaft mounting seat through the third bearing.

[0015] According to the technical scheme, the second shaft sleeve and the flange are further provided; the limiting protrusion is arranged on the transmission shaft at the transition disc, and the limiting protrusion is attached to the end face of the second bearing close to the speed reducer; the second shaft sleeve is sleeved on the transmission shaft between the small pulley and the transmission shaft mounting seat, and the two ends of the second shaft sleeve are attached to the end faces of the first bearing and the third bearing respectively; and the flange is fixed to the other end of the transmission shaft mounting seat, and the flange is attached to the other end face of the third bearing.

[0016] The utility model discloses have following beneficial effect:

[0017] 1. In the low-speed heavy load stage of starting, the motor drives the speed reducer to rotate at low speed, the clutch is attracted, and the transmission shaft drives the clutch, the transmission assembly and the main shaft to rotate.

[0018] Based on the above process, the transmission device adopts the form of the speed reducer with gear shifting matched with the clutch, meets the transmission demand of the centrifugal machine with large load and high speed, simplifies the arrangement form of the transmission device, reduces the size of the transmission device, and makes the installation and use of the transmission device convenient.

[0019] 2. The clutch and part of the transmission assembly are installed on the transmission shaft and are radially supported, so that the stability of torque transmission is ensured.

[0020] 3. First, the transition disc is fixedly installed on part of the clutch by passing the threaded fastener through the first threaded hole and the first bolt connection through hole; second, the small pulley is fixedly installed on the transition disc by passing the threaded fastener through the second threaded hole and the second bolt connection through hole. Based on the above structure, the small pulley, the transition disc, and part of the clutch are fixedly connected; in addition, since the first threaded hole and the second threaded hole are located on the same side and are operated in sequence, there is no interference in the operation process, and the connection process and the subsequent disassembly process are ensured to be convenient and fast.

[0021] 4. Under the action of the limiting protrusion, the first shaft sleeve, the second shaft sleeve, and the flange, the axial movement of the first bearing, the second bearing, and the third bearing is limited, the small pulley is ensured to rotate stably on the transmission shaft, and the stability of torque transmission during the motor driving spindle process is ensured.

[0022] The above description is only a summary of the technical scheme of the present application. In order to more clearly understand the technical means of the present application, and can be implemented according to the content of the specification, the following will be described in detail with the preferred embodiments of the present application and the accompanying drawings. The specific implementation of the present application is given in detail by the following embodiments and their accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings described herein are used to provide further understanding of the present application, constitute a part of this application, and the schematic embodiments of the present application and their descriptions are used to explain the present application, and do not constitute improper limitation on the present application.

[0024] Figure 1 is a structure schematic view of the embodiment provided by the present application;

[0025] Figure 2 is a local structure schematic view of the embodiment provided by the present application;

[0026] In the figure, 1, motor; 2, main shaft; 3, speed reducer; 4, transmission shaft; 4-1, inner hole; 4-2, limiting protrusion; 5, clutch; 5-1, first threaded hole; 6, transmission assembly; 6-1, large pulley; 6-2, small pulley; 6-21, second bolt connection through hole; 6-3, synchronous belt; 6-4, first bearing; 6-5, first shaft sleeve; 6-6, second bearing; 7, flat key; 8, transition disc; 8-1, first bolt connection through hole; 8-2, second threaded hole; 9, threaded fastener; 10, support; 10-1, platform; 10-2, transmission shaft mounting seat; 10-3, third bearing; 11, second shaft sleeve; 12, flange. DETAILED DESCRIPTION

[0027] The following detailed description of the application is presented in connection with the attached drawings Figure 1 The principles and features of the present application are described, the examples are used to explain the present application, and are not intended to limit the scope of the present application. In the following paragraphs, the present application is described in more detail with reference to the accompanying drawings. The advantages and features of the present application will be more apparent from the following description and claims. It should be noted that the drawings are greatly simplified and use non-precise proportions, only to facilitate, clearly assist in explaining the purpose of the embodiments of the present application.

[0028] It should be noted that when the assembly is referred to as "fixed" to another assembly, it can be directly on another assembly or there can be a middle assembly. When an assembly is considered "connected" to another assembly, it can be directly connected to another assembly or there can be a middle assembly. When an assembly is considered "disposed" on another assembly, it can be directly disposed on another assembly or there can be a middle assembly. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0030] Referring to Figures 1-2 As shown in the figure, the heavy-duty high-speed centrifuge transmission device provided by the present application.

[0031] Example 1

[0032] The transmission device comprises a motor 1 and a main shaft 2 connected with a centrifugal machine, a speed reducer 3, a transmission shaft 4, a clutch 5 and a transmission assembly 6, the speed reducer is provided with a high-speed gear and a low-speed gear, the speed reducer is connected between the motor and the transmission shaft, the clutch adopts an existing structure and is divided into two parts, one part is connected with the transmission shaft and the other part is connected with the transmission assembly.

[0033] When the centrifugal machine starts, the speed reducer is in the low-speed gear and the two parts of the clutch are in the attraction state; before the speed reducer is switched from the low-speed gear to the high-speed gear, the clutch is switched from the attraction state to the separation state; after the speed reducer is switched from the low-speed gear to the high-speed gear and the speed difference between the two parts of the clutch is within a set range, the clutch is switched from the separation state to the attraction state.

[0034] The speed reducer with gear switching and the clutch are arranged, so that the transmission device can switch between a larger speed range and a load range.

[0035] In the low-speed heavy load stage of starting, the motor drives the speed reducer to operate in the low-speed gear, the clutch is attracted, the transmission shaft drives the clutch, the transmission assembly and the main shaft to rotate. When accelerating to the intermediate speed, the clutch is released, at this time, the clutch, the transmission assembly and the main shaft rotate by inertia; the speed reducer is switched to the high-speed gear, when the speed reducer accelerates again, the speed of the two parts of the clutch is the same or the speed difference is within a set range, the clutch is attracted, the transmission shaft drives the clutch, the transmission assembly and the main shaft to accelerate to a higher speed, so as to realize heavy load high-speed transmission.

[0036] Based on the above process, the transmission device adopts the form of the speed reducer with gear switching matched with the clutch, which meets the transmission demand of the centrifugal machine with large load and high speed, simplifies the arrangement form of the transmission device, reduces the size of the transmission device, and makes the installation and use of the transmission device convenient.

[0037] Embodiment 2

[0038] The structure and principle of embodiment 2 are close to those of embodiment 1, and the difference lies in that: in order to simplify the structure of the transmission device and ensure the stability of the operation of the transmission device, one end of the transmission shaft is connected with the output shaft of the speed reducer, the other end is provided with a transmission shaft mounting seat 10-2, the transmission shaft is rotatably connected to the transmission shaft mounting seat through a bearing; one part of the transmission assembly is connected with the main shaft, the other part of the transmission assembly is rotatably connected to the transmission shaft; one part of the clutch is fixed on the transmission shaft, the other part of the clutch is fixed on the rotating part of the transmission assembly.

[0039] In this embodiment, the clutch and one part of the transmission assembly are both installed on the transmission shaft, which is radially supported, so as to ensure the stability of the torque transmission. Moreover, a separate intermediate shaft is avoided for the transmission assembly, so as to reduce the number of components of the transmission device.

[0040] In the embodiments 1-2, the transmission assembly adopts gear transmission, or chain transmission, or belt transmission.

[0041] Taking the belt transmission as an example, the transmission assembly comprises a large pulley 6-1 fixed on the main shaft, a small pulley 6-2 rotatably connected to the transmission shaft, and a synchronous belt 6-3 connected between the large pulley and the small pulley.

[0042] Preferably, the synchronous belt adopts a toothed belt, the large pulley and the main shaft are connected through a flat key 7, and the small pulley is rotatably connected to the outside of the transmission shaft through the first bearing 6-4 located on the left side, the first shaft sleeve 6-5 located in the middle, and the second bearing 6-6 located on the right side.

[0043] Embodiment 3

[0044] The structure and principle of embodiment 3 are similar to those of embodiment 2, and the difference lies in that, based on the preferred transmission assembly given above, in order to facilitate the connection of the small pulley and the clutch, a transition disc 8 is further included, a first threaded hole 5-1 is provided on the clutch, and a first bolt connection through hole 8-1 matched with the first threaded hole is provided on the transition disc; a second threaded hole 8-2 is provided on the transition disc, and a second bolt connection through hole 6-21 matched with the second threaded hole is provided on the small pulley; the small pulley and the transition disc, and a part of the transition disc and the clutch are connected through threaded fasteners 9; and a gap is left between the transition disc and the transmission shaft.

[0045] In the above structure, first, the threaded fasteners pass through the first threaded hole and the first bolt connection through hole to realize the fixed installation of the transition disc on a part of the clutch; second, the threaded fasteners pass through the second threaded hole and the second bolt connection through hole to realize the fixed installation of the small pulley on the transition disc. Based on the above structure, the small pulley, the transition disc, and a part of the clutch are fixedly connected; in addition, since the first threaded hole and the second threaded hole are located on the same side, they are operated in sequence without interference in the operation process, ensuring that the connection process and the subsequent disassembly process are convenient and fast.

[0046] In the above embodiments 1-3, a preferred connection form of the transmission shaft and the speed reducer is given, an inner hole 4-1 is provided at the end of the transmission shaft connected to the speed reducer, and the output shaft of the speed reducer is fixedly connected in the inner hole through a flat key; the other part of the clutch is fixedly connected to the outer wall of the transmission shaft through a flat key.

[0047] In the above embodiments 1-3, a preferred transmission device is arranged in the form of a heavy-duty high-speed centrifuge, further comprising a support 10, a platform 10-1 and a transmission shaft mounting seat 10-2 are arranged on the support, and a motor and a speed reducer are fixedly arranged on the platform; a bearing hole is arranged in the transmission shaft mounting seat, and the other end of the transmission shaft is arranged in the transmission shaft mounting seat through a third bearing 10-3.

[0048] In the above embodiments 1-3, in order to achieve axial positioning of the first bearing, the second bearing and the third bearing on the transmission shaft, a second shaft sleeve 11 and a flange 12 are further included; a limiting protrusion 4-2 is arranged at the transition disc of the transmission shaft, and the limiting protrusion is attached to the end face of the second bearing close to the speed reducer; the second shaft sleeve is arranged on the transmission shaft between the small pulley and the transmission shaft mounting seat, and the two ends of the second shaft sleeve are attached to the end faces of the first bearing and the third bearing, respectively; the flange is fixed to the other end of the transmission shaft mounting seat, and the flange is attached to the other end face of the third bearing.

[0049] Under the action of the limiting protrusion, the first shaft sleeve, the second shaft sleeve and the flange, the axial movement of the first bearing, the second bearing and the third bearing is limited, the small pulley rotates stably on the transmission shaft, and the stability of torque transmission during the process of driving the main shaft by the motor is ensured.

[0050] In use, during the low-speed heavy-load stage of starting, the motor drives the speed reducer to operate at a low speed, the clutch is attracted, the transmission shaft drives the small pulley, the synchronous belt, the large pulley and the main shaft to rotate through the clutch. When accelerating to an intermediate speed, the two parts of the clutch are separated, at this time, the small pulley, the large pulley, the synchronous belt and the main shaft rotate by inertia; the speed reducer is switched to a high-speed gear, and when the speed reducer is accelerated to an intermediate speed again, the clutch is attracted, and the transmission shaft drives the small pulley, the synchronous belt, the large pulley and the main shaft to accelerate to a higher speed.

[0051] The above is only a preferred embodiment of the present application, and does not limit the present application in any form; any person skilled in the art can easily implement the present application according to the drawings and the above description; however, any equivalent changes, modifications and evolution made by those skilled in the art within the scope of the technical scheme of the present application, using the above disclosed technical content, are equivalent embodiments of the present application; at the same time, any equivalent changes, modifications and evolution of the above embodiments according to the essential technology of the present application are still within the protection scope of the technical scheme of the present application.

Claims

1. A drive for a heavy duty high speed centrifuge comprising an electric motor and a main shaft connected to the centrifuge, characterised in that: The transmission assembly comprises a transmission shaft, a transmission component, and a clutch, the transmission shaft is connected between the motor and the transmission component, the clutch is divided into two parts, one part is connected with the transmission shaft, and the other part is connected with the transmission component; When the centrifuge starts, the clutch is in the attracted state, and the transmission shaft is in the low gear; before the transmission shaft is switched from the low gear to the high gear, the clutch is switched from the attracted state to the separated state; after the transmission shaft is switched from the low gear to the high gear and the speed difference between the two parts of the clutch is within the set range, the clutch is switched from the separated state to the attracted state.

2. A heavy duty high speed centrifuge drive as claimed in claim 1, wherein: One end of the transmission shaft is connected with the output shaft of the transmission, and the other end is provided with a transmission shaft mounting seat, the transmission shaft is rotatably connected to the transmission shaft mounting seat through a bearing; one part of the transmission component is connected with the main shaft, and the other part of the transmission component is rotatably connected to the transmission shaft; one part of the clutch is fixed on the transmission shaft, and the other part of the clutch is fixed on the transmission component located on the rotating part of the transmission shaft.

3. The heavy-duty high-speed centrifuge drive apparatus according to claim 1, characterized by: The transmission component adopts gear transmission, chain transmission, or belt transmission.

4. A heavy duty high speed centrifuge drive as claimed in claim 3, wherein: The transmission component comprises a large pulley fixed on the main shaft, a small pulley rotatably connected to the transmission shaft, and a synchronous belt connected between the large pulley and the small pulley.

5. A heavy duty high speed centrifuge drive as claimed in claim 4, wherein: The synchronous belt adopts a toothed belt, the large pulley and the main shaft are connected through a flat key, and the small pulley is rotatably connected to the outside of the transmission shaft through the adjacent first bearing located on the left side, the first shaft sleeve located in the middle, and the second bearing located on the right side.

6. The heavy-duty high-speed centrifuge drive apparatus according to claim 4, characterized by: A transition disc is further included, a first threaded hole is arranged on the clutch, and a first bolt connection through hole matched with the first threaded hole is arranged on the transition disc; a second threaded hole is arranged on the transition disc, and a second bolt connection through hole matched with the second threaded hole is arranged on the small pulley; the small pulley and the transition disc, and the transition disc and one part of the clutch are connected through threaded fasteners; a gap is left between the transition disc and the transmission shaft.

7. A heavy duty high speed centrifuge drive as claimed in any of claims 2 to 6, characterised in that: An inner hole is arranged on the end of the transmission shaft connected with the transmission, and the output shaft of the transmission is fixedly connected in the inner hole through a flat key; the other part of the clutch is fixedly connected to the outer wall of the transmission shaft through a flat key.

8. The heavy-duty high-speed centrifuge drive apparatus according to claim 5, characterized by: A transmission shaft mounting seat is further included, a platform and the transmission shaft mounting seat are arranged on the support seat, and the motor and the transmission are fixedly installed on the platform; a bearing hole is arranged in the transmission shaft mounting seat, and the other end of the transmission shaft is installed in the transmission shaft mounting seat through a third bearing.

9. A heavy duty high speed centrifuge drive as claimed in claim 8, characterised in that: A second shaft sleeve and a flange are further included; a limiting protrusion is arranged on the transmission shaft at the transition disc, and the limiting protrusion is attached to the end face of the second bearing close to the transmission; the second shaft sleeve is sleeved on the transmission shaft between the small pulley and the transmission shaft mounting seat, and the two ends of the second shaft sleeve are attached to the end faces of the first bearing and the third bearing respectively; the flange is fixed to the other end of the transmission shaft mounting seat, and the flange is attached to the other end face of the third bearing.

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