CN108531705B

CN108531705B - Multilayer roller conveying system of aluminum alloy hub heat treatment furnace

Info

Publication number: CN108531705B
Application number: CN201810677216.XA
Authority: CN
Inventors: 陶圣年; 许志丹
Original assignee: Nanjing Nianda Furnace Science And Technology Co ltd
Current assignee: Nanjing Nianda Furnace Science And Technology Co ltd
Priority date: 2018-06-27
Filing date: 2018-06-27
Publication date: 2023-09-19
Anticipated expiration: 2038-06-27
Also published as: CN108531705A

Abstract

The invention discloses a multilayer roller conveying system of an aluminum alloy hub heat treatment furnace, which solves the technical problems: aiming at the problem that the multi-layer synchronous conveying system in the prior art aluminum wheel hub heat treatment furnace without charging basket mentioned in the background art cannot meet the following conditions: discharging and aligning; layering feeding and single-layer discharging quenching; the technical problem that different conveying speeds of the large and small hubs meet different heat treatment process requirements is solved. The technical scheme is that the multi-layer roller conveying system of the aluminum alloy hub heat treatment furnace comprises roller driving unit layers which are arranged on the outer side of the furnace body and are equal in number to conveying roller unit layers and are used for driving each conveying roller unit layer to work independently, and the roller driving unit layers are located on the same side of the furnace body. The conveying system has the advantages that the discharging alignment is stable, layered rapid discharging quenching can be realized, different process treatments of the multi-layer hub can be realized in one heat treatment furnace, and the aluminum hub differentiated heat treatment can be perfectly realized.

Description

Multilayer roller conveying system of aluminum alloy hub heat treatment furnace

Technical Field

The invention relates to a multilayer roller conveying system of an aluminum alloy hub heat treatment furnace.

Background

In the production of aluminum alloy hubs, the design and the manufacture are mostly carried out according to an automatic production line, in actual production, the types of the aluminum hubs produced by factories are changed at any time according to different orders, the die casting machine is formed by connecting single machines in parallel, the maneuverability is very strong, and the types of the production hubs can be changed at any time by changing a die according to the change of the orders. However, the heat treatment is carried out without a charging basket, the full-automatic production is carried out, the multi-layer conveying is required as much as possible under the condition of unchanged width of the furnace body, the multi-layer conveying is generally carried out in two or more layers, the sizes of hubs placed on each layer of conveying roller ways are different, different running speeds are required to be set for each layer of used hubs so as to meet the requirements of different heat treatment process time, great influence is caused on production automation, as the manufacturing process of the aluminum hubs is changed, the hubs on each layer are required to be separately quenched, the optimal mechanical performance is achieved, the requirements on heat treatment equipment are higher and higher, and various requirements of feeding, conveying in the furnace and discharging quenching are required to be fully considered when the multi-layer conveying system of the hubs is designed. According to different aluminum hub forming processes, aluminum alloy hubs with different brands, different quenching liquids and the like, the multi-layer roller conveying system of the aluminum alloy hub heat treatment furnace is optimally designed, and the high-efficiency and stable aluminum hub conveying system effectively ensures the manufacturing and development of the aluminum alloy hubs.

At present, the following methods are mainly adopted in many domestic technologies: the whole main speed reducer is driven, and the multilayer conveying rollers simultaneously run under the driving of the speed reducer.

1. The mode can theoretically meet synchronous conveying, but considering that the hubs have burrs and different sizes, particularly under the condition of large difference of the sizes of the hubs, multiple layers of hubs are difficult to reach the discharge port at the same time, so that rapid discharge quenching is difficult to realize at the same time, and quenching faults often occur.

2. At present, a plurality of manufacturers require layered quenching to realize the optimization of the mechanical properties of the hub, one main drive simultaneously drives the three layers of rollers to simultaneously operate, the three layers of rollers need to stop and start and stop and rotate together, and the layered quenching cannot be realized.

3. Many manufacturers require layering different-sized hubs, each layer of hubs has different sizes, the heat treatment temperature in the furnace is consistent, but the heat treatment process time is different, at this time, different hubs can be stored in advance before entering the furnace, placed on different layers according to different hubs before entering the furnace, and then different running time is set for each layer, so that different heat treatment of the hubs can be realized in one heat treatment furnace. This function is not possible with a single speed reducer driving the multi-layer conveyor roller.

Disclosure of Invention

The technical problem to be solved by the invention is that aiming at the problem that the multi-layer synchronous conveying system in the aluminum wheel hub heat treatment furnace without charging basket in the prior art mentioned in the background art cannot meet the following conditions: discharging and aligning; layering feeding and single-layer discharging quenching; the technical problem that different conveying speeds of the large and small hubs meet different heat treatment process requirements is solved.

In order to solve the technical scheme, the design idea of the invention is that a layered conveying system is adopted, each layer of conveying system is independently driven, and the front and rear limit of a furnace body and a unique hub rear end alignment mode are combined to meet various technological requirements of the current aluminum alloy hub heat treatment basket-free conveying.

The specific technical scheme adopted is as follows:

the multi-layer roller conveying system of the aluminum alloy wheel hub heat treatment furnace comprises an aluminum alloy wheel hub heat treatment furnace, wherein the aluminum alloy wheel hub heat treatment furnace comprises a furnace body and at least one layer of conveying roller unit layers arranged in a hearth and used for conveying aluminum alloy wheel hubs, and the conveying roller unit layers comprise conveying rollers arranged side by side; all the conveying rollers partially extend out of the furnace body, and the roller driving unit layer drives the conveying rollers to rotate; defining a feeding accelerating section at the feeding end of the furnace body, defining a discharging accelerating section at the discharging end of the furnace body, wherein the feeding accelerating section is a region formed by at least six conveying rollers at the feeding port in the hearth, and the discharging accelerating section is a region formed by at least six conveying rollers at the discharging port in the hearth;

Each roller driving unit layer comprises a main speed reducer for driving all conveying rollers in the furnace to rotate at a low speed, a feeding speed reducer for driving the conveying rollers positioned in the feeding accelerating section to rotate at a high speed and a discharging speed reducer for driving the conveying rollers positioned in the discharging accelerating section to rotate at a high speed,

the main speed reducer is arranged on the furnace body through a speed reducer bracket, and an output shaft of the main speed reducer is connected with the end part of a conveying roller rod positioned at the position of the main speed reducer through a sprocket coupling;

the feeding speed reducer is arranged on the feeding acceleration section, the feeding speed reducer is arranged on the furnace body through a speed reducer bracket, a first overrunning clutch is arranged on the shaft of the feeding speed reducer, one end of the first overrunning clutch is provided with a third sprocket through a bolt, the first overrunning clutch is connected with a conveying roller rod positioned in the feeding acceleration section through the third sprocket and a sprocket coupling, and the third sprocket and the sprocket coupling are bound together through a chain; a first sprocket and a second overrunning clutch are respectively arranged on two conveying roller bars adjacent to the feeding accelerating section and the low-speed section, the first sprocket is arranged on the conveying roller bar positioned in the feeding accelerating section, the second overrunning clutch is arranged on the conveying roller bar positioned in the low-speed section, one end of the second overrunning clutch is provided with the second sprocket through a bolt, and the second sprocket is connected with the first sprocket through a chain;

The discharging speed reducer is arranged on the discharging acceleration section, the discharging speed reducer is arranged on the furnace body through a speed reducer bracket, a first overrunning clutch is arranged on the shaft of the discharging speed reducer motor, a third sprocket is arranged at one end of the first overrunning clutch through a bolt, the first overrunning clutch is connected with a conveying roller rod positioned in the discharging acceleration section through the third sprocket and a sprocket coupling, and the third sprocket and the sprocket coupling are bound together through a chain; a first sprocket and a second overrunning clutch are respectively arranged on two conveying roller bars adjacent to the discharging accelerating section and the low-speed section, the first sprocket is arranged on the conveying roller bar positioned in the discharging accelerating section, the second overrunning clutch is arranged on the conveying roller bar positioned in the low-speed section, one end of the second overrunning clutch is provided with the second sprocket through a bolt, and the second sprocket is connected with the first sprocket through a chain;

the end parts of all the conveying rollers are provided with driving chain wheels, and the other conveying rollers except for two adjacent conveying rollers provided with a second overrunning clutch and a first chain wheel in the feeding acceleration section and the discharging acceleration section are connected through chains;

a feeding stop detection point for detecting whether the hub is fed or not and a feeding material level detection point for detecting whether the hub is arranged at the feeding station or not are sequentially arranged on the side wall of the feeding acceleration section furnace body along the feeding direction, and the linear distance between the center point of the feeding stop detection point and the feeding inlet of the feeding acceleration section furnace body is 5cm; the straight line distance between the center point of the feeding material level detection point and the center point of the feeding stop detection point is 5-20cm;

A discharging speed conversion detection point for detecting whether the wheel hub reaches a discharging station or not and a discharging material level detection point for detecting whether the wheel hub exists in the discharging station or not are sequentially arranged on the side wall of the discharging acceleration section furnace body along the discharging direction, and the linear distance between the center point of the discharging speed conversion detection point and the discharging port of the discharging acceleration section furnace body is 80-100cm; the straight line distance between the center point of the discharging speed conversion detection point and the center point of the discharging material level detection point is 5-20cm;

photoelectric switches are arranged in the feeding stop detection point, the feeding material level detection point, the discharging speed conversion detection point and the discharging material level detection point.

According to the technical scheme, the multilayer roller conveying system of the aluminum alloy hub heat treatment furnace has the advantages that the discharging alignment is stable: multilayer conveying and layering driving are carried out, the situation that each layer is not disturbed before is guaranteed, a consistently used alignment mode of the front end of a hub feeding furnace is changed, and the rear end of the hub is aligned. The wheel hubs run to the discharge port in the furnace, each layer detects respectively and stops waiting for other layers, all layers can reach the discharge port, the furnace door is opened, and the wheel hubs of all layers are discharged and quenched together rapidly. Meanwhile, the multilayer roller conveying system of the aluminum alloy hub heat treatment furnace can also realize layered rapid discharging quenching: because each layer of rapid driving in and out of the furnace is respectively arranged, the conveying in the furnace is also driven in layers, and each layer is not interfered with each other; and feeding in layers according to beats, wherein the layer of the first material reaches the discharge position first, and quenching is carried out after the layer reaches the discharge position first.

According to the multi-layer roller conveying system of the aluminum alloy hub heat treatment furnace, hub manufacturers with the best heat treatment process are required to carry out differentiated heat treatment on hubs with different wall thicknesses, different aluminum alloy brands or different forming processes, and particularly, the process time is required to be adjusted according to the wall thicknesses, the aluminum alloy brands and the forming processes of the hubs so as to achieve the optimal mechanical properties of the aluminum alloy hubs. And each layer of driving motor is independently provided with a frequency converter, the conveying speed of the multi-layer stick can be independently set according to different process time requirements, the process time is short, the process time is long, and the process time is low, and then the differential heat treatment of the aluminum wheel hub is perfectly realized by combining a layered quenching technology. The frequency converter is separately configured at each layer of driving motor, which is a conventional technology in the prior art, and the speed of each motor is adjusted by adopting the frequency converter to realize the speed adjustment of the conveying roller, which is a conventional technology, and the invention is not described in detail.

The invention provides a multilayer roller conveying system of a second aluminum alloy wheel hub heat treatment furnace, which comprises an aluminum alloy wheel hub heat treatment furnace, wherein the aluminum alloy wheel hub heat treatment furnace comprises a furnace body and at least one conveying roller unit layer which is arranged in a hearth and is used for conveying aluminum alloy wheel hubs, and the conveying roller unit layer comprises conveying rollers which are arranged side by side; all the conveying rollers partially extend out of the furnace body, and the roller driving unit layer drives the conveying rollers to rotate; defining a feeding accelerating section at the feeding end of the furnace body, defining a discharging accelerating section at the discharging end of the furnace body, wherein the feeding accelerating section is a region formed by at least six conveying rollers at the feeding port in the hearth, and the discharging accelerating section is a region formed by at least six conveying rollers at the discharging port in the hearth;

Each roller driving unit layer comprises a main speed reducer, two sub-speed reducers which are connected with the main speed reducer and simultaneously drive all conveying rollers in the furnace to rotate at a low speed, a feeding speed reducer which drives the conveying rollers positioned in the feeding accelerating section to rotate at a high speed and a discharging speed reducer which drives the conveying rollers positioned in the discharging accelerating section to rotate at a high speed,

one main speed reducer is arranged on the furnace body through a speed reducer bracket, the main speed reducer is a double-output motor, the two sub speed reducers are symmetrically arranged relative to the main speed reducer, two output shafts of the main speed reducer are connected with input shafts of the two sub speed reducers through couplings, the output shafts of the sub speed reducers are connected with the end part of a conveying roller rod positioned at the position of the sub speed reducer through sprocket couplings,

The invention provides a multi-layer roller conveying system of a third aluminum alloy hub heat treatment furnace, which comprises an aluminum alloy hub heat treatment furnace, wherein the aluminum alloy hub heat treatment furnace comprises a furnace body and at least one conveying roller unit layer which is arranged in a hearth and is used for conveying aluminum alloy hubs, and the conveying roller unit layer comprises conveying rollers which are arranged side by side; all the conveying rollers partially extend out of the furnace body, and the roller driving unit layer drives the conveying rollers to rotate; defining a feeding accelerating section at the feeding end of the furnace body, defining a discharging accelerating section at the discharging end of the furnace body, wherein the feeding accelerating section is a region formed by at least six conveying rollers at the feeding port in the hearth, and the discharging accelerating section is a region formed by at least six conveying rollers at the discharging port in the hearth;

Each roller driving unit layer comprises a main speed reducer, four sub-speed reducers which are connected with the main speed reducer and simultaneously drive all conveying rollers in the furnace to rotate at a low speed, a feeding speed reducer which drives the conveying rollers positioned in the feeding accelerating section to rotate at a high speed and a discharging speed reducer which drives the conveying rollers positioned in the discharging accelerating section to rotate at a high speed,

the four sub-speed reducers are symmetrically arranged about the main speed reducer, and are all single-input and double-output motors; defining two sub-speed reducers positioned at one side of the main speed reducer as a first sub-speed reducer and a second sub-speed reducer respectively;

the two output shafts of the main speed reducer are connected with the input shafts of two first sub-speed reducers through couplings, the first sub-speed reducers are arranged on the furnace body through speed reducer supports, the first output shafts of the first sub-speed reducers are connected with the end part of one conveying roller rod positioned at the position of the first sub-speed reducers through sprocket couplings, the second output shafts of the first sub-speed reducers are connected with the input shafts of the second sub-speed reducers through couplings, the second sub-speed reducers are arranged on the furnace body through speed reducer supports, and the first output shafts of the second sub-speed reducers are connected with the end part of one conveying roller rod positioned at the position of the second sub-speed reducers through sprocket couplings;

The invention provides a multi-layer roller conveying system of a fourth aluminum alloy hub heat treatment furnace, which comprises an aluminum alloy hub heat treatment furnace, wherein the aluminum alloy hub heat treatment furnace comprises a furnace body and at least one conveying roller unit layer which is arranged in a hearth and is used for conveying aluminum alloy hubs, and the conveying roller unit layer comprises conveying rollers which are arranged side by side; all the conveying rollers partially extend out of the furnace body, and the roller driving unit layer drives the conveying rollers to rotate; defining a feeding accelerating section at the feeding end of the furnace body, defining a discharging accelerating section at the discharging end of the furnace body, wherein the feeding accelerating section is a region formed by at least six conveying rollers at the feeding port in the hearth, and the discharging accelerating section is a region formed by at least six conveying rollers at the discharging port in the hearth;

each roller driving unit layer comprises a main speed reducer, six sub-speed reducers which are connected with the main speed reducer and simultaneously drive all conveying rollers in the furnace to rotate at a low speed, a feeding speed reducer which drives the conveying rollers positioned in the feeding accelerating section to rotate at a high speed and a discharging speed reducer which drives the conveying rollers positioned in the discharging accelerating section to rotate at a high speed,

The main speed reducer is arranged on the furnace body through a speed reducer bracket, the main speed reducer is a double-output motor, six sub speed reducers are symmetrically arranged relative to the main speed reducer, the six sub speed reducers are single-input double-output motors, and two sub speed reducers positioned at one side of the main speed reducer are defined to be a first sub speed reducer, a second sub speed reducer and a third sub speed reducer respectively;

the two output shafts of the main speed reducer are connected with the input shafts of two first sub speed reducers through a shaft coupling, the first sub speed reducers are arranged on a furnace body through a speed reducer bracket, the first output shafts of the first sub speed reducers are connected with the end part of one conveying roller rod positioned at the position of the first sub speed reducer through a chain wheel shaft coupling, the second output shafts of the first sub speed reducers are connected with the input shafts of the second sub speed reducers through a shaft coupling, the second sub speed reducers are arranged on the furnace body through a speed reducer bracket, the first output shafts of the second sub speed reducers are connected with the end part of one conveying roller rod positioned at the position of the second sub speed reducer through a chain wheel shaft coupling, the second output shafts of the second sub speed reducers are connected with the input shaft of the third sub speed reducer through a speed reducer bracket, and the first output shaft chain wheel shaft of the third sub speed reducer is connected with the end part of one conveying roller rod positioned at the position of the third sub speed reducer;

The invention provides a fifth multi-layer roller conveying system of an aluminum alloy hub heat treatment furnace, which comprises an aluminum alloy hub heat treatment furnace, wherein the aluminum alloy hub heat treatment furnace comprises a furnace body and at least one conveying roller unit layer which is arranged in a hearth and is used for conveying aluminum alloy hubs, and the conveying roller unit layer comprises conveying rollers which are arranged side by side; all the conveying rollers partially extend out of the furnace body, and the roller driving unit layer drives the conveying rollers to rotate; defining a feeding accelerating section at the feeding end of the furnace body, defining a discharging accelerating section at the discharging end of the furnace body, wherein the feeding accelerating section is a region formed by at least six conveying rollers at the feeding port in the hearth, and the discharging accelerating section is a region formed by at least six conveying rollers at the discharging port in the hearth;

each roller driving unit layer comprises a main speed reducer, more than six sub-speed reducers which are connected with the main speed reducer and simultaneously drive all conveying rollers in the furnace to rotate at a low speed, a feeding speed reducer which drives the conveying rollers positioned in the feeding accelerating section to rotate at a high speed and a discharging speed reducer which drives the conveying rollers positioned in the discharging accelerating section to rotate at a high speed,

The main speed reducer is arranged on the furnace body through a speed reducer bracket, the main speed reducer is a double-output motor, six sub speed reducers are symmetrically arranged on the main speed reducer, the six sub speed reducers are all single-input double-output motors, two sub speed reducers positioned on one side of the main speed reducer are defined to be a first sub speed reducer, a second sub speed reducer, a third sub speed reducer and a … … Nth sub speed reducer respectively, and N is a positive integer larger than 3;

the two output shafts of the main speed reducer are connected with the input shafts of two first sub speed reducers through a shaft coupling, the first sub speed reducers are arranged on a furnace body through a speed reducer bracket, the first output shafts of the first sub speed reducers are connected with the end part of one conveying roller rod positioned at the position of the first sub speed reducer through a chain wheel shaft coupling, the second output shafts of the first sub speed reducers are connected with the input shafts of the second sub speed reducers through a shaft coupling, the second sub speed reducers are arranged on the furnace body through a speed reducer bracket, the first output shafts of the second sub speed reducers are connected with the end part of one conveying roller rod positioned at the position of the second sub speed reducer through a chain wheel shaft coupling, the second output shafts of the second sub speed reducers are connected with the input shafts … … of the fourth sub speed reducer through a shaft coupling, the third sub speed reducer is arranged on the furnace body through a speed reducer bracket, the second output shafts of the third sub speed reducer are connected with the end part of the third sub speed reducer through a chain wheel shaft coupling, and the first output shafts of the third sub speed reducer are connected with the N-reducer through a second shaft coupling positioned at the position of the second sub speed reducer;

Preferably, the final drive is located in a central position of the furnace body.

Preferably, the speed reducer bracket is welded on the furnace body.

Preferably, the drive sprocket is keyed to the transport roller.

Compared with the prior art, the invention has the advantages that:

1. this aluminum alloy wheel hub heat treatment furnace multilayer roller conveying system, ejection of compact alignment is stable, and according to multilayer wheel hub carried characteristic, wheel hub has aligned at the furnace body front end and has finished, changes the mode that the wheel hub front end aligned in the past, adopts wheel hub rear end alignment mode, is favorable to the interval of the fast, slow roller when furnace body rear end ejection of compact to separate. In the past, the front end of the hub is used for feeding in an alignment mode, when the two rows of hubs are too small in distance, the diameter of the hub is small, so that the second last row of hubs can be discharged, the quenching material table at the rear end of the furnace body cannot accept the two rows of hubs, and the situation that the discharging is uneven and the clamping is serious can occur.

2. The multi-layer roller conveying system of the aluminum alloy hub heat treatment furnace can realize layered rapid discharging quenching.

3. The multi-layer roller conveying system of the aluminum alloy hub heat treatment furnace can realize different process treatments of multi-layer hubs in one heat treatment furnace, and perfectly realize differentiated heat treatment of aluminum hubs.

Drawings

Fig. 1 is a side view of a furnace body of a third embodiment.

Fig. 2 is an enlarged partial view of section A-A of fig. 1.

Fig. 3 is a partial enlarged view of section B-B of fig. 1.

Fig. 4 is a cross-sectional view of C-C of fig. 1.

Detailed Description

In order to make the contents of the present invention more comprehensible, the present invention is further described with reference to fig. 1 to 4 and the detailed description.

The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

Example 1

In this embodiment, three conveying roller unit layers for conveying aluminum alloy hubs are provided in the aluminum alloy hub heat treatment furnace in the prior art, and there are three roller driving unit layers equal to the three conveying roller unit layers in number.

The multi-layer roller conveying system of the aluminum alloy hub heat treatment furnace comprises an aluminum alloy hub heat treatment furnace, wherein the aluminum alloy hub heat treatment furnace comprises a furnace body 1 and at least one conveying roller unit layer which is arranged in a hearth and is used for conveying aluminum alloy hubs, the conveying roller unit layer comprises conveying rollers 2 which are arranged side by side, the multi-layer roller conveying system also comprises roller driving unit layers which are arranged outside the furnace body 1 and are equal in number to the conveying roller unit layers and are used for driving each conveying roller unit layer to work independently, and the roller driving unit layers are positioned on the same side of the furnace body 1; all conveying rollers 2 partially extend out of the furnace body 1, and the roller driving unit layer drives the conveying rollers 2 to rotate; a feeding accelerating section is defined at the feeding end of the furnace body 1, a discharging accelerating section is defined at the discharging end of the furnace body 1, the feeding accelerating section is an area formed by at least six conveying rollers 2 at the feeding port in the hearth, and the discharging accelerating section is an area formed by at least six conveying rollers 2 at the discharging port in the hearth.

Each roller driving unit layer comprises a main speed reducer 4 for driving all conveying rollers 2 in the furnace to rotate slowly, a feeding speed reducer 3 for driving the conveying rollers 2 positioned in the feeding accelerating section to rotate rapidly, and a discharging speed reducer 8 for driving the conveying rollers 2 positioned in the discharging accelerating section to rotate rapidly.

A main speed reducer 4 is arranged on the furnace body 1 through a speed reducer bracket 7, the speed reducer bracket 7 is welded on the furnace body 1, and the main speed reducer 4 is positioned in the middle of the furnace body 1. The output shaft of the main speed reducer 4 is connected with the end part of a conveying roller rod 2 at the position of the main speed reducer 4 through a sprocket coupling 9, and the main speed reducer 4 provides torque for rotating the conveying roller rod 2.

As shown in fig. 4, the feeding speed reducer 3 is arranged at a feeding acceleration section, the feeding speed reducer 3 is arranged on the furnace body 1 through a speed reducer bracket 7, a first overrunning clutch 11 is arranged on a motor shaft of the feeding speed reducer 3, a third sprocket 20 is arranged at one end of the first overrunning clutch 11 through bolts, the first overrunning clutch 11 is connected with a conveying roller rod 2 positioned in the feeding acceleration section through the third sprocket 20 and a sprocket coupler 9, and the third sprocket 20 and the sprocket coupler 9 are bound together through a chain; the two conveying rollers 2 adjacent to the feeding accelerating section and the low-speed section are respectively provided with a first sprocket 18 and a second overrunning clutch 21, the first sprocket 18 is arranged on the conveying roller 2 positioned in the feeding accelerating section, the second overrunning clutch 21 is arranged on the conveying roller 2 positioned in the low-speed section, one end of the second overrunning clutch 21 is provided with a second sprocket 19 through a bolt, and the second sprocket 19 is connected with the first sprocket 18 through a chain 16.

The discharging speed reducer 8 is arranged on the discharging acceleration section, the discharging speed reducer 8 is arranged on the furnace body 1 through a speed reducer bracket 7, a first overrunning clutch 11 is arranged on a motor shaft of the discharging speed reducer 8, a third sprocket 20 is arranged at one end of the first overrunning clutch 11 through a bolt, the first overrunning clutch 11 is connected with a conveying roller rod 2 positioned in the discharging acceleration section through the third sprocket 20 and a sprocket coupler 9, and the third sprocket 20 and the sprocket coupler 9 are bound together through a chain; the two conveying rollers 2 adjacent to the low-speed section in the discharging acceleration section are respectively provided with a first sprocket 18 and a second overrunning clutch 21, the first sprocket 18 is arranged on the conveying roller 2 positioned in the discharging acceleration section, the second overrunning clutch 21 is arranged on the conveying roller 2 positioned in the low-speed section, one end of the second overrunning clutch 21 is provided with a second sprocket 19 through a bolt, and the second sprocket 19 is connected with the first sprocket 18 through a chain 16.

As shown in fig. 4, two overrun clutches, namely a first overrun clutch 11 and a second overrun clutch 21, are respectively arranged in the feeding accelerating section and the discharging accelerating section, and the two overrun clutches are designed to realize the fast and slow conversion between the feeding accelerating section and the low-speed section and between the discharging accelerating section and the low-speed section. Only in the material accelerating section and the discharging accelerating section, the quick and slow conversion is realized through two overrun clutches, and the purposes of quick in and out of the furnace are achieved. Specifically, when all the conveying rollers 2 in the furnace body 1 are in low-speed operation, the first overrunning clutch 11 is opened, and the second overrunning clutch 21 is closed. When the feeding acceleration section needs acceleration, the first overrun clutch 11 is closed, and the second overrun clutch 21 is opened; the low speed section also maintains normal speed operation at this time; similarly, when the discharging acceleration section needs acceleration, the first overrun clutch 11 is closed, and the second overrun clutch 21 is opened; the low speed section also maintains normal speed operation at this time. The overrunning clutch is a conventional technical product in the prior art and is directly purchased.

The end parts of all the conveying rollers 2 are provided with driving chain wheels 10, and the other conveying rollers 2 except for the adjacent two conveying rollers 2 in the feeding accelerating section and the discharging accelerating section, which are provided with a second overrunning clutch 21 and a first chain wheel 18, are connected through chains 16. The purpose of rotating all the conveying rollers 2 together is achieved by arranging a drive sprocket 10 at the end of all the conveying rollers 2 and arranging a chain 16 between the two drive sprockets 10. The drive sprocket 10 referred to herein is a double row sprocket or a triple row sprocket of the prior art. As shown in fig. 4.

In this embodiment, the output shaft of the main speed reducer 4 is connected to the end of a conveying roller 2 located at the position of the main speed reducer 4 through a sprocket coupling 9, and the driving sprocket 10 disposed at the end of the conveying roller 2 is three rows of sprockets, and the three rows of sprockets are connected to the end of the conveying roller 2 through keys for transmitting torque. The first row of chain wheels of the three rows of chain wheels are bound with the chain wheels on the chain wheel coupler 9 through chains, the second row of chain wheels and the third row of chain wheels respectively drive the driving chain wheels 10 on two adjacent sides of the second row of chain wheels and the third row of chain wheels to operate through chains 16, and the driving chain wheels 10 transmit torque to each conveying roller rod 2 through flat keys, so that a plurality of conveying roller rods 2 are driven to operate.

Meanwhile, a first overrunning clutch 11 is arranged on a motor shaft of the feeding speed reducer 3 in the embodiment, the first overrunning clutch 11 is connected with a conveying roller rod 2 positioned in a feeding acceleration section through a third sprocket 20 and a sprocket coupler 9, and the third sprocket 20 and the sprocket coupler 9 are bound together through a chain. The transmission chain wheel 10 arranged at the end part of the conveying roller rod 2 is three rows of chain wheels, and the three rows of chain wheels are connected at the end part of the conveying roller rod 2 through keys and are used for transmitting torque. The first row of chain wheels of the three rows of chain wheels are bound with the chain wheels on the chain wheel coupler 9 through chains, the second row of chain wheels and the third row of chain wheels respectively drive the driving chain wheels 10 on two adjacent sides of the second row of chain wheels and the third row of chain wheels to operate through chains 16, and the driving chain wheels 10 transmit torque to each conveying roller rod 2 through flat keys, so that a plurality of conveying roller rods 2 are driven to operate.

Further, a first overrunning clutch 11 is arranged on a motor shaft of the discharging speed reducer 8 in the embodiment, the first overrunning clutch 11 is connected with a conveying roller rod 2 positioned in a discharging acceleration section through a third sprocket 20 and a sprocket coupler 9, and the third sprocket 20 and the sprocket coupler 9 are bound together through a chain. The transmission chain wheel 10 arranged at the end part of the conveying roller rod 2 is three rows of chain wheels, and the three rows of chain wheels are connected at the end part of the conveying roller rod 2 through keys and are used for transmitting torque. The first row of chain wheels of the three rows of chain wheels are bound with the chain wheels on the chain wheel coupler 9 through chains, the second row of chain wheels and the third row of chain wheels respectively drive the driving chain wheels 10 on two adjacent sides of the second row of chain wheels and the third row of chain wheels to operate through chains 16, and the driving chain wheels 10 transmit torque to each conveying roller rod 2 through flat keys, so that a plurality of conveying roller rods 2 are driven to operate.

Except that the above-mentioned driving chain wheels 10 arranged at the end parts of the three conveying rollers 2 are three rows of chain wheels, the driving chain wheels 10 arranged at the end parts of the rest conveying rollers 2 are double rows of chain wheels, the first row of chain wheels and the second row of chain wheels respectively drive the driving chain wheels 10 at two adjacent sides to the first row of chain wheels and the second row of chain wheels to operate through chains 16, and the driving chain wheels 10 transmit torque to each conveying roller 2 through flat keys, so that a plurality of conveying rollers 2 are driven to operate.

As shown in fig. 1, a feed stop detection point 12 for detecting whether a hub is already fed in place and a feed level detection point 13 for detecting whether a hub is present at a feed station are sequentially provided on the side wall of the feed acceleration stage furnace body 1 along the feed direction, and the straight line distance between the center point of the feed stop detection point 12 and the feed inlet of the feed acceleration stage furnace body 1 is 5cm; the linear distance between the center point of the feed level detection point 13 and the center point of the feed stop detection point 12 is 5-20cm.

The feed stop detection point 12 and the feed level detection point 13 are arranged at the front end of the feed acceleration section of the furnace body 1, and the number of layers is respectively set. Photoelectric switches are arranged in the feeding stop detection point 12 and the feeding level detection point 13 and are used for detecting whether hubs exist or not, and whether hubs exist in the feeding station can be identified while feeding of each layer of hubs is guaranteed. The photoelectric switch is an outsourcing piece.

As shown in fig. 1, a discharging speed conversion detection point 14 for detecting whether a wheel hub has reached a discharging station and a discharging material level detection point 15 for detecting whether the discharging station has a wheel hub are sequentially arranged on the side wall of a discharging acceleration section furnace body 1 along the discharging direction, wherein the linear distance between the central point of the discharging speed conversion detection point 14 and the discharging port of the discharging acceleration section furnace body 1 is 80-100cm; the straight line distance between the center point of the discharging speed and speed conversion detecting point 14 and the center point of the discharging material level detecting point 15 is 5 cm to 20cm.

The discharging speed conversion detecting point 14 and the discharging material level detecting point 15 are arranged at the front end of the discharging accelerating section of the furnace body 1, and a plurality of layers are respectively arranged. Photoelectric switches are arranged in the discharging speed conversion detection point 14 and the discharging material level detection point 15 and are used for detecting whether hubs exist or not. The photoelectric switch at the discharging speed conversion detection point 14 is used for detecting that the hub has reached a discharging station, and if multiple layers all reach the station, the hub can be discharged quickly. If any layer does not arrive, waiting for all layers to reach the rapid tapping quenching again; and the steel can be discharged from the furnace for quenching in a layering way. The photoelectric switch at the discharge material level detection point 15 is used for displaying whether the discharge station has a hub or not. The problem that the next-to-last row of hubs are discharged is avoided when the discharge position of each layer of hubs is at the same vertical position, and the orderly and uniform discharge of the hubs is guaranteed. The photoelectric switch is an outsourcing piece.

Example 2

Each roller driving unit layer comprises a main speed reducer 4, two sub-speed reducers 6 which are connected with the main speed reducer 4 and simultaneously drive all conveying rollers 2 in the furnace to rotate at a low speed, a feeding speed reducer 3 which drives the conveying rollers 2 positioned in a feeding accelerating section to rotate rapidly, and a discharging speed reducer 8 which drives the conveying rollers 2 positioned in a discharging accelerating section to rotate rapidly.

A main speed reducer 4 is arranged on the furnace body 1 through a speed reducer bracket 7, the speed reducer bracket 7 is welded on the furnace body 1, and the main speed reducer 4 is positioned in the middle of the furnace body 1. The main reducer 4 in this embodiment is a dual output motor, two sub-reducers 6 are symmetrically arranged about the main reducer 4, two output shafts of the main reducer 4 are connected with input shafts of the two sub-reducers 6 through a coupling 5, and the output shafts of the sub-reducers 6 are connected with the end part of one conveying roller 2 located at the position of the sub-reducer 6 through a sprocket coupling 9, and the sub-reducers 6 transmit torque to the conveying roller 2.

In this embodiment, the output shafts of the two sub-reducers 6 are connected to the ends of the two conveying rollers 2 located at the positions of the two sub-reducers 6 through a sprocket coupling 9, and the transmission sprockets 10 arranged at the ends of the two conveying rollers 2 are three rows of sprockets, and the three rows of sprockets are connected to the ends of the conveying rollers 2 through keys and are used for transmitting torque. The first row of chain wheels of the three rows of chain wheels are bound with the chain wheels on the chain wheel coupler 9 through chains, the second row of chain wheels and the third row of chain wheels respectively drive the driving chain wheels 10 on two adjacent sides of the second row of chain wheels and the third row of chain wheels to operate through chains 16, and the driving chain wheels 10 transmit torque to each conveying roller rod 2 through flat keys, so that a plurality of conveying roller rods 2 are driven to operate.

Except that the above-mentioned driving chain wheels 10 arranged at the end parts of the four conveying rollers 2 are three rows of chain wheels, the driving chain wheels 10 arranged at the end parts of the rest conveying rollers 2 are double rows of chain wheels, the first row of chain wheels and the second row of chain wheels respectively drive the driving chain wheels 10 at two adjacent sides to the first row of chain wheels and the second row of chain wheels to operate through chains 16, and the driving chain wheels 10 transmit torque to each conveying roller 2 through flat keys, so that a plurality of conveying rollers 2 are driven to operate.

Example 3

As shown in fig. 1, this embodiment is described by taking three conveying roller unit layers for conveying aluminum alloy hubs in a heat treatment furnace for aluminum alloy hubs in the prior art as an example, and there are three roller driving unit layers equal to the three conveying roller unit layers in number.

As shown in fig. 1, each roller driving unit layer comprises a main speed reducer 4, four sub-speed reducers 6 which are connected with the main speed reducer 4 and simultaneously drive all conveying rollers 2 in the furnace to rotate at a low speed, a feeding speed reducer 3 which drives the conveying rollers 2 positioned in the feeding acceleration section to rotate at a high speed, and a discharging speed reducer 8 which drives the conveying rollers 2 positioned in the discharging acceleration section to rotate at a high speed.

As shown in fig. 1 and 3, a main speed reducer 4 is arranged on the furnace body 1 through a speed reducer bracket 7, the speed reducer bracket 7 is welded on the furnace body 1, and the main speed reducer 4 is positioned in the middle of the furnace body 1. The main speed reducer 4 in the embodiment is a double-output motor, four sub-speed reducers 6 are symmetrically arranged about the main speed reducer 4, and the four sub-speed reducers 6 in the embodiment are all single-input double-output motors; two sub-reducers 6 defined on one side of the main reducer 4 are a first sub-reducer and a second sub-reducer, respectively.

As shown in fig. 1 and 3, two output shafts of the main speed reducer 4 are connected with input shafts of two first sub-speed reducers through a shaft coupling 5, the first sub-speed reducers are arranged on the furnace body 1 through a speed reducer bracket 7, the first output shafts of the first sub-speed reducers are connected with the end part of one conveying roller rod 2 positioned at the position of the first sub-speed reducer through a chain wheel shaft coupling 9, the second output shafts of the first sub-speed reducers are connected with the input shafts of the second sub-speed reducers through the shaft coupling 5, the second sub-speed reducers are arranged on the furnace body 1 through the speed reducer bracket 7, and the first output shafts of the second sub-speed reducers are connected with the end part of one conveying roller rod 2 positioned at the position of the second sub-speed reducer through the chain wheel shaft coupling 9; the sub-speed reducer 6 transmits torque to the conveying roller 2.

In this embodiment, as shown in fig. 2, the first output shaft of the first sub-speed reducer is connected to the end of a conveying roller 2 located at the position of the first sub-speed reducer through a sprocket coupling 9, and the driving sprocket 10 provided at the end of the conveying roller 2 is three rows of sprockets, and the three rows of sprockets are connected to the end of the conveying roller 2 by keys for transmitting torque. The first row of chain wheels of the three rows of chain wheels are bound with the chain wheels on the chain wheel coupler 9 through chains, the second row of chain wheels and the third row of chain wheels respectively drive the driving chain wheels 10 on two adjacent sides of the second row of chain wheels and the third row of chain wheels to operate through chains 16, and the driving chain wheels 10 transmit torque to each conveying roller rod 2 through flat keys, so that a plurality of conveying roller rods 2 are driven to operate. Meanwhile, in this embodiment, the first output shaft of the second sub-speed reducer is connected to the end of a conveying roller 2 located at the position of the second sub-speed reducer through a sprocket coupling 9, and a driving sprocket 10 disposed at the end of the conveying roller 2 is three rows of sprockets, and the three rows of sprockets are connected to the end of the conveying roller 2 through keys for transmitting torque. The first row of chain wheels of the three rows of chain wheels are bound with the chain wheels on the chain wheel coupler 9 through chains, the second row of chain wheels and the third row of chain wheels respectively drive the driving chain wheels 10 on two adjacent sides of the second row of chain wheels and the third row of chain wheels to operate through chains 16, and the driving chain wheels 10 transmit torque to each conveying roller rod 2 through flat keys, so that a plurality of conveying roller rods 2 are driven to operate.

As shown in fig. 1, in this embodiment, there are two first sub-reducers and two second sub-reducers, so that three rows of sprockets are disposed at the ends of four conveying rollers 2, three rows of sprockets are disposed at the ends of two conveying rollers 2 connected to the feeding reducer 3 and the discharging reducer 8, the driving sprockets 10 disposed at the ends of the remaining conveying rollers 2 are double rows of sprockets, the first row and the second row of sprockets drive the driving sprockets 10 at two adjacent sides thereof through chains 16 respectively, and the driving sprockets 10 transmit torque to each conveying roller 2 through a flat key, so as to drive the conveying rollers 2 to operate.

Example 4

The multi-layer roller conveying system of the aluminum alloy wheel hub heat treatment furnace comprises an aluminum alloy wheel hub heat treatment furnace, wherein the aluminum alloy wheel hub heat treatment furnace comprises a furnace body 1 and at least one conveying roller unit layer which is arranged in a hearth and is used for conveying aluminum alloy wheel hubs, and the conveying roller unit layer comprises conveying rollers 2 which are arranged side by side; all conveying rollers 2 partially extend out of the furnace body 1, and the roller driving unit layer drives the conveying rollers 2 to rotate; a section of feeding accelerating section is defined at the feeding end of the furnace body 1, a section of discharging accelerating section is defined at the discharging end of the furnace body 1, the feeding accelerating section is a region formed by at least six conveying roller bars 2 positioned at the feeding port in the furnace chamber, and the discharging accelerating section is a region formed by at least six conveying roller bars 2 positioned at the discharging port in the furnace chamber;

Each roller driving unit layer comprises a main speed reducer 4, six sub-speed reducers 6 which are connected with the main speed reducer 4 and simultaneously drive all conveying rollers 2 in the furnace to rotate at a low speed, a feeding speed reducer 3 which drives the conveying rollers 2 positioned in a feeding accelerating section to rotate rapidly, and a discharging speed reducer 8 which drives the conveying rollers 2 positioned in a discharging accelerating section to rotate rapidly.

A main speed reducer 4 is arranged on the furnace body 1 through a speed reducer bracket 7, the speed reducer bracket 7 is welded on the furnace body 1, and the main speed reducer 4 is positioned in the middle of the furnace body 1. The main speed reducer 4 in this embodiment is a dual output motor, six sub-speed reducers 6 are symmetrically arranged about the main speed reducer 4, the six sub-speed reducers 6 in this embodiment are all single input dual output motors, and two sub-speed reducers 6 defined on one side of the main speed reducer 4 are respectively a first sub-speed reducer, a second sub-speed reducer and a third sub-speed reducer.

The two output shafts of the main speed reducer 4 are connected with the input shafts of two first sub-speed reducers through a shaft coupling 5, the first sub-speed reducers are arranged on the furnace body 1 through a speed reducer bracket 7, the first output shafts of the first sub-speed reducers are connected with the end part of one conveying roller rod 2 positioned at the position of the first sub-speed reducer through a chain wheel shaft coupling 9, the second output shafts of the first sub-speed reducers are connected with the input shafts of the second sub-speed reducers through a shaft coupling 5, the second sub-speed reducers are arranged on the furnace body 1 through a speed reducer bracket 7, the first output shafts of the second sub-speed reducers are connected with the end part of one conveying roller rod 2 positioned at the position of the second sub-speed reducer through a chain wheel shaft coupling 9, the second output shafts of the second sub-speed reducers are connected with the input shafts of the third sub-speed reducer through a chain wheel shaft coupling 5, the third sub-speed reducer is arranged on the furnace body 1, and the first output shafts of the third sub-speed reducer are connected with the end part of one conveying roller rod 2 positioned at the position of the third sub-speed reducer.

In this embodiment, torque is transmitted to the conveying roller 2 through six sub-reducers 6.

In this embodiment, the first output shaft of the first sub-speed reducer is connected to the end of a conveying roller 2 located at the position of the first sub-speed reducer through a sprocket coupling 9, and a driving sprocket 10 disposed at the end of the conveying roller 2 is three rows of sprockets, and the three rows of sprockets are connected to the end of the conveying roller 2 through keys for transmitting torque. The first row of chain wheels of the three rows of chain wheels are bound with the chain wheels on the chain wheel coupler 9 through chains, the second row of chain wheels and the third row of chain wheels respectively drive the driving chain wheels 10 on two adjacent sides of the second row of chain wheels and the third row of chain wheels to operate through chains 16, and the driving chain wheels 10 transmit torque to each conveying roller rod 2 through flat keys, so that a plurality of conveying roller rods 2 are driven to operate. Meanwhile, in this embodiment, the first output shaft of the second sub-speed reducer is connected to the end of a conveying roller 2 located at the position of the second sub-speed reducer through a sprocket coupling 9, and a driving sprocket 10 disposed at the end of the conveying roller 2 is three rows of sprockets, and the three rows of sprockets are connected to the end of the conveying roller 2 through keys for transmitting torque. The first row of chain wheels of the three rows of chain wheels are bound with the chain wheels on the chain wheel coupler 9 through chains, the second row of chain wheels and the third row of chain wheels respectively drive the driving chain wheels 10 on two adjacent sides of the second row of chain wheels and the third row of chain wheels to operate through chains 16, and the driving chain wheels 10 transmit torque to each conveying roller rod 2 through flat keys, so that a plurality of conveying roller rods 2 are driven to operate. Further, the first output shaft sprocket coupling 9 of the third sub-speed reducer is connected to the end of a conveying roller 2 located at the position where the third sub-speed reducer is located, and the driving sprocket 10 disposed at the end of the conveying roller 2 is three rows of sprockets, and the three rows of sprockets are connected to the end of the conveying roller 2 through keys and are used for transmitting torque. The first row of chain wheels of the three rows of chain wheels are bound with the chain wheels on the chain wheel coupler 9 through chains, the second row of chain wheels and the third row of chain wheels respectively drive the driving chain wheels 10 on two adjacent sides of the second row of chain wheels and the third row of chain wheels to operate through chains 16, and the driving chain wheels 10 transmit torque to each conveying roller rod 2 through flat keys, so that a plurality of conveying roller rods 2 are driven to operate.

The motor shaft of the feeding speed reducer 3 in the embodiment is provided with a first overrun clutch 11, the first overrun clutch 11 is connected with a conveying roller rod 2 positioned in the feeding acceleration section through a third sprocket 20 and a sprocket coupler 9, and the third sprocket 20 and the sprocket coupler 9 are bound together through a chain. The transmission chain wheel 10 arranged at the end part of the conveying roller rod 2 is three rows of chain wheels, and the three rows of chain wheels are connected at the end part of the conveying roller rod 2 through keys and are used for transmitting torque. The first row of chain wheels of the three rows of chain wheels are bound with the chain wheels on the chain wheel coupler 9 through chains, the second row of chain wheels and the third row of chain wheels respectively drive the driving chain wheels 10 on two adjacent sides of the second row of chain wheels and the third row of chain wheels to operate through chains 16, and the driving chain wheels 10 transmit torque to each conveying roller rod 2 through flat keys, so that a plurality of conveying roller rods 2 are driven to operate.

The motor shaft of the discharging speed reducer 8 in the embodiment is provided with a first overrunning clutch 11, the first overrunning clutch 11 is connected with a conveying roller rod 2 positioned in the discharging acceleration section through a third sprocket 20 and a sprocket coupler 9, and the third sprocket 20 and the sprocket coupler 9 are bound together through a chain. The transmission chain wheel 10 arranged at the end part of the conveying roller rod 2 is three rows of chain wheels, and the three rows of chain wheels are connected at the end part of the conveying roller rod 2 through keys and are used for transmitting torque. The first row of chain wheels of the three rows of chain wheels are bound with the chain wheels on the chain wheel coupler 9 through chains, the second row of chain wheels and the third row of chain wheels respectively drive the driving chain wheels 10 on two adjacent sides of the second row of chain wheels and the third row of chain wheels to operate through chains 16, and the driving chain wheels 10 transmit torque to each conveying roller rod 2 through flat keys, so that a plurality of conveying roller rods 2 are driven to operate.

In this embodiment, there are two first sub-reducers, two second sub-reducers and two third sub-reducers, so that three rows of sprockets are arranged at the end parts of six conveying rollers 2, three rows of sprockets are arranged at the end parts of two conveying rollers 2 connected with the feeding reducer 3 and the discharging reducer 8, the driving sprockets 10 arranged at the end parts of the rest conveying rollers 2 are double rows of sprockets, the first row and the second row of sprockets respectively drive the driving sprockets 10 at two adjacent sides to operate through the chain 16, and the driving sprockets 10 transmit torque to each conveying roller 2 through a flat key, so as to drive a plurality of conveying rollers 2 to operate.

Example 5

The multi-layer roller conveying system of the aluminum alloy wheel hub heat treatment furnace comprises an aluminum alloy wheel hub heat treatment furnace, wherein the aluminum alloy wheel hub heat treatment furnace comprises a furnace body 1 and at least one conveying roller unit layer which is arranged in a hearth and is used for conveying aluminum alloy wheel hubs, and the conveying roller unit layer comprises conveying rollers 2 which are arranged side by side; all conveying rollers 2 partially extend out of the furnace body 1, and the roller driving unit layer drives the conveying rollers 2 to rotate; a feeding accelerating section is defined at the feeding end of the furnace body 1, a discharging accelerating section is defined at the discharging end of the furnace body 1, the feeding accelerating section is an area formed by at least six conveying rollers 2 at the feeding port in the hearth, and the discharging accelerating section is an area formed by at least six conveying rollers 2 at the discharging port in the hearth.

Each roller driving unit layer comprises a main speed reducer 4, more than six sub-speed reducers 6 which are connected with the main speed reducer 4 and simultaneously drive all conveying rollers 2 in the furnace to rotate slowly, a feeding speed reducer 3 which drives the conveying rollers 2 positioned in the feeding acceleration section to rotate rapidly, and a discharging speed reducer 8 which drives the conveying rollers 2 positioned in the discharging acceleration section to rotate rapidly.

A main speed reducer 4 is arranged on the furnace body 1 through a speed reducer bracket 7, the speed reducer bracket 7 is welded on the furnace body 1, and the main speed reducer 4 is positioned in the middle of the furnace body 1. The main speed reducer 4 in this embodiment is a dual output motor, six sub-speed reducers 6 are symmetrically arranged about the main speed reducer 4, all sub-speed reducers 6 are single input dual output motors, two sub-speed reducers 6 defined on one side of the main speed reducer 4 are respectively a first sub-speed reducer, a second sub-speed reducer, a third sub-speed reducer and a … … nth sub-speed reducer, and N is a positive integer greater than 3.

The two output shafts of the main speed reducer 4 are connected with the input shafts of the two first sub speed reducers through a shaft coupling 5, the first sub speed reducers are arranged on the furnace body 1 through a speed reducer bracket 7, the first output shafts of the first sub speed reducers are connected with the end parts of one conveying roller rod 2 at the position of the first sub speed reducers through a chain wheel shaft coupling 9, the second output shafts of the first sub speed reducers are connected with the input shafts of the second sub speed reducers through a shaft coupling 5, the second sub speed reducers are arranged on the furnace body 1 through a speed reducer bracket 7, the first output shafts of the second sub speed reducers are connected with the end parts of one conveying roller rod 2 at the position of the second sub speed reducers through a chain wheel shaft coupling 9, the second output shafts of the second sub speed reducers are connected with the input shafts of the third sub speed reducers through a chain wheel coupling 5, the third sub speed reducers are arranged on the furnace body 1 through a chain wheel coupling 9, the second output shafts of the third sub speed reducers are connected with the end parts of one conveying roller rod 2 at the position of the third sub speed reducers through a chain wheel coupling 9, and the second output shafts of the third sub speed reducers are connected with the second shafts of the second N1 through a shaft coupling 2 through a shaft coupling 385.

In this embodiment, torque is transmitted to the conveying roller 2 through the 2N sub-reducers 6.

In this embodiment, the first output shaft of the first sub-speed reducer is connected to the end of a conveying roller 2 located at the position of the first sub-speed reducer through a sprocket coupling 9, and a driving sprocket 10 disposed at the end of the conveying roller 2 is three rows of sprockets, and the three rows of sprockets are connected to the end of the conveying roller 2 through keys for transmitting torque. The first row of chain wheels of the three rows of chain wheels are bound with the chain wheels on the chain wheel coupler 9 through chains, the second row of chain wheels and the third row of chain wheels respectively drive the driving chain wheels 10 on two adjacent sides of the second row of chain wheels and the third row of chain wheels to operate through chains 16, and the driving chain wheels 10 transmit torque to each conveying roller rod 2 through flat keys, so that a plurality of conveying roller rods 2 are driven to operate. Meanwhile, in this embodiment, the first output shaft of the second sub-speed reducer is connected to the end of a conveying roller 2 located at the position of the second sub-speed reducer through a sprocket coupling 9, and a driving sprocket 10 disposed at the end of the conveying roller 2 is three rows of sprockets, and the three rows of sprockets are connected to the end of the conveying roller 2 through keys for transmitting torque. The first row of chain wheels of the three rows of chain wheels are bound with the chain wheels on the chain wheel coupler 9 through chains, the second row of chain wheels and the third row of chain wheels respectively drive the driving chain wheels 10 on two adjacent sides of the second row of chain wheels and the third row of chain wheels to operate through chains 16, and the driving chain wheels 10 transmit torque to each conveying roller rod 2 through flat keys, so that a plurality of conveying roller rods 2 are driven to operate. Further, the first output shaft sprocket coupling 9 of the third sub-speed reducer is connected to the end of a conveying roller 2 located at the position where the third sub-speed reducer is located, and the driving sprocket 10 disposed at the end of the conveying roller 2 is three rows of sprockets, and the three rows of sprockets are connected to the end of the conveying roller 2 through keys and are used for transmitting torque. The first row of chain wheels of the three rows of chain wheels are bound with the chain wheels on the chain wheel coupler 9 through chains, the second row of chain wheels and the third row of chain wheels drive the driving chain wheels 10 on two adjacent sides of the chain wheels to operate through chains 16, the driving chain wheels 10 transmit torque to each conveying roller rod 2 through flat keys, so that a plurality of conveying roller rods 2 are driven to operate, … … is connected to the end part of one conveying roller rod 2 positioned at the position of the third sub-speed reducer through the first output shaft chain wheel coupler 9 of the N sub-speed reducer, the driving chain wheels 10 arranged at the end part of the conveying roller rod 2 are three rows of chain wheels, and the three rows of chain wheels are connected to the end part of the conveying roller rod 2 through keys and are used for transmitting torque. The first row of chain wheels of the three rows of chain wheels are bound with the chain wheels on the chain wheel coupler 9 through chains, the second row of chain wheels and the third row of chain wheels respectively drive the driving chain wheels 10 on two adjacent sides of the second row of chain wheels and the third row of chain wheels to operate through chains 16, and the driving chain wheels 10 transmit torque to each conveying roller rod 2 through flat keys, so that a plurality of conveying roller rods 2 are driven to operate.

In this embodiment, there are two first sub-reducers, two second sub-reducers, two third sub-reducers … and two nth sub-reducers, so that there are three rows of sprockets at the end of 2N conveying rollers 2, three rows of sprockets at the end of two conveying rollers 2 connected with the feeding reducer 3 and the discharging reducer 8, and two driving sprockets 10 at the end of the rest conveying rollers 2 are double rows of sprockets, the first row and the second row of sprockets drive the driving sprockets 10 at two adjacent sides thereof through chains 16 respectively, and the driving sprockets 10 transmit torque to each conveying roller 2 through flat keys, so as to drive a plurality of conveying rollers 2 to operate.

The multi-layer roller conveying system of the aluminum alloy hub heat treatment furnace in the five embodiments has the following characteristics:

1. and (3) discharging alignment is stable: according to the characteristics of multi-layer hub conveying, the front end of the furnace body 1 is aligned, the previous hub front end alignment mode is changed, and the hub rear end alignment mode is adopted, so that the separation of the fast roller and the slow roller during discharging of the rear end of the furnace body 1 is facilitated. In the past, the front end of the hub is used for feeding in an alignment mode, if the distance between two rows of hubs is too small during discharging, the diameter of the hub is also small, the situation that the hub in the penultimate row is also followed during discharging is caused, and the quenching material table at the rear end of the furnace body 1 cannot accept the two rows of hubs, so that the situation that the discharging is uneven and the clamping is serious can occur.

Multilayer conveying and layering driving are carried out, the situation that each layer is not disturbed before is guaranteed, a consistently used alignment mode of the front end of a hub feeding furnace is changed, and the rear end of the hub is aligned. The wheel hub moves to the discharge gate in the stove, can adopt every layer to detect just stopping waiting for other layers respectively, and all layers reach the discharge gate just to open, and the quick ejection of compact quenching of wheel hub. The multi-layer stick conveying can be adopted, the multi-layer stick conveying is not interfered with each other, and the other layers are waited for when arriving first until all the layers are in place, and then the multi-layer stick conveying is rapidly discharged. The simultaneous tapping or layered tapping can be selected according to the requirements of customers.

The feed stop detection point 12 and the feed level detection point 13 are provided at the front end of the furnace body 1, and the number of layers is set up. The feed stop detection point 2 is used to detect that the hub has been fed into position and the feed level detection point 13 is used to show whether the feed station has a hub. And the feeding station can identify whether the hub exists at the feeding station while feeding each layer of hub in place is guaranteed.

The discharging speed conversion detection point 14 and the discharging material level detection point 15 are arranged at the discharging acceleration section at the rear end of the furnace body 1, and the number of layers is more than that. The discharging speed switching detection point 14 is used for detecting that the hub has reached a discharging station, and if multiple layers reach the station, the hub can be discharged rapidly; if any layer is not reached, waiting for all layers to reach and restarting the rapid tapping quenching, the discharging material level detecting point 15 is used for displaying whether the discharging station has a hub or not. The problem that the next-to-last row of hubs are discharged is avoided when the discharge position of each layer of hubs is at the same vertical position, and the orderly and uniform discharge of the hubs is guaranteed.

2. Can realize layered rapid discharge quenching: adopt roller driving unit layer to carry out conveyor layering setting, every layer of roller driving unit layer sets up all transport roller 2 in the drive furnace and slowly rotate main reducer 4, all transport roller 2 in the drive furnace slowly pivoted divide speed reducer 6 when linking to each other with main reducer 4, a drive is located the transport roller 2 fast pivoted feeding speed reducer 3 and a drive is located the transport roller 2 fast pivoted ejection of compact speed reducer 8 of ejection of compact acceleration section of feeding acceleration section, do not interfere each other between every layer. The specific implementation principle is that the main speed reducer 4 transmits torque to the sub-speed reducer 6 on the same layer through the coupling 5, the sub-speed reducer 6 is a single-input double-output type speed reducer, and the torque transmitted by the main speed reducer 4 is transmitted to the next sub-speed reducer 6 on the same layer through an output shaft at the other end of the sub-speed reducer 6, so that the torque is serially connected. The sub-speed reducer 6 transmits torque to a transmission sprocket 10 through a sprocket coupling 9, the transmission sprocket 10 is a three-row sprocket, the first row is connected with the sprocket coupling 9 on the output shaft of the sub-speed reducer 6, the second row and the third row respectively drive the transmission sprocket 10 on two sides to operate through a chain 16, and the transmission sprocket 10 transmits torque to each conveying roller rod 2 through a flat key, so that the operation of a plurality of conveying roller rods 2 is driven. The speed of the conveying roller bars 2 on each layer is consistent at a slow speed, and the speed is switched between a fast speed and a slow speed only at the feeding and discharging stations through the overrunning clutch 11, so that the purposes of fast feeding and discharging are achieved. As each layer of the rapid driving device for entering and exiting the furnace is respectively arranged, the conveying in the furnace is also driven in layers, and each layer is not interfered with each other. And feeding in layers according to beats, wherein the layer of the first material reaches the discharge position first, and quenching is carried out after the layer reaches the discharge position first.

3. Different process treatments of the multi-layer hub can be realized in one heat treatment furnace, and the differentiated heat treatment of the aluminum hub can be perfectly realized. The hub manufacturers with the best heat treatment process require different wall thicknesses, different aluminum alloy brands or different forming processes to carry out differentiated heat treatment, and particularly in process time, the hubs are required to be adjusted according to the wall thicknesses, the aluminum alloy brands and the forming processes so as to achieve the optimal mechanical properties of the aluminum alloy hub. And the main speed reducer 4 of each layer is independently provided with a frequency converter in a layered driving manner, the conveying speed of each layer of conveying roller rod 2 can be independently set according to different process time requirements, the process time is short, the process time is long, and the speed is slow, and then the differential heat treatment of the aluminum wheel hub is perfectly realized by combining a layered quenching technology.

The invention is not related in part to the same or implemented in part by the prior art.

The embodiments described herein are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Equivalent changes and modifications of the invention are intended to be within the scope of the present invention.

Claims

1. The multi-layer roller conveying system of the aluminum alloy wheel hub heat treatment furnace comprises an aluminum alloy wheel hub heat treatment furnace, wherein the aluminum alloy wheel hub heat treatment furnace comprises a furnace body (1) and at least one conveying roller unit layer which is arranged in a hearth and is used for conveying aluminum alloy wheel hubs, and the conveying roller unit layer comprises conveying rollers (2) which are arranged side by side; all conveying rollers (2) partially extend out of the furnace body (1), and the roller driving unit layer drives the conveying rollers (2) to rotate; a feeding accelerating section is defined at the feeding end of the furnace body (1), a discharging accelerating section is defined at the discharging end of the furnace body (1), and a low-speed section is defined between the feeding accelerating section and the discharging accelerating section; the feeding accelerating section is a region formed by at least six conveying rollers (2) at a feeding hole in the hearth, and the discharging accelerating section is a region formed by at least six conveying rollers (2) at a discharging hole in the hearth;

each roller driving unit layer comprises a main speed reducer (4) for driving all conveying rollers (2) in the furnace to rotate at a low speed, a feeding speed reducer (3) for driving the conveying rollers (2) positioned in the feeding accelerating section to rotate at a high speed and a discharging speed reducer (8) for driving the conveying rollers (2) positioned in the discharging accelerating section to rotate at a high speed,

A main speed reducer (4) is arranged on the furnace body (1) through a speed reducer bracket (7), and an output shaft of the main speed reducer (4) is connected with the end part of a conveying roller (2) positioned at the position of the main speed reducer (4) through a sprocket coupling (9);

the feeding speed reducer (3) is arranged on the feeding acceleration section, the feeding speed reducer (3) is arranged on the furnace body (1) through a speed reducer bracket (7), a first overrunning clutch (11) is arranged on a motor shaft of the feeding speed reducer (3), a third sprocket (20) is arranged at one end of the first overrunning clutch (11) through a bolt, the first overrunning clutch (11) is connected with a conveying roller (2) positioned in the feeding acceleration section through the third sprocket (20) and a sprocket coupling (9), and the third sprocket (20) and the sprocket coupling (9) are bound together through a chain; a first sprocket (18) and a second overrunning clutch (21) are respectively arranged on two conveying roller bars (2) adjacent to the feeding accelerating section and the low-speed section, the first sprocket (18) is arranged on the conveying roller bar (2) positioned in the feeding accelerating section, the second overrunning clutch (21) is arranged on the conveying roller bar (2) positioned in the low-speed section, a second sprocket (19) is arranged at one end of the second overrunning clutch (21) through a bolt, and the second sprocket (19) is connected with the first sprocket (18) through a chain (16);

The discharging speed reducer (8) is arranged on the discharging acceleration section, the discharging speed reducer (8) is arranged on the furnace body (1) through a speed reducer bracket (7), a first overrunning clutch (11) is arranged on a motor shaft of the discharging speed reducer (8), a third sprocket (20) is arranged at one end of the first overrunning clutch (11) through a bolt, the first overrunning clutch (11) is connected with a conveying roller (2) positioned in the discharging acceleration section through the third sprocket (20) and a sprocket coupling (9), and the third sprocket (20) and the sprocket coupling (9) are bound together through a chain; a first sprocket (18) and a second overrunning clutch (21) are respectively arranged on two conveying roller bars (2) adjacent to the low-speed section in the discharging acceleration section, the first sprocket (18) is arranged on the conveying roller bar (2) positioned in the discharging acceleration section, the second overrunning clutch (21) is arranged on the conveying roller bar (2) positioned in the low-speed section, a second sprocket (19) is arranged at one end of the second overrunning clutch (21) through a bolt, and the second sprocket (19) is connected with the first sprocket (18) through a chain (16);

the end parts of all the conveying roller bars (2) are provided with driving chain wheels (10), and the other conveying roller bars (2) except for two adjacent conveying roller bars (2) provided with a second overrunning clutch (21) and a first chain wheel (18) in the feeding accelerating section and the discharging accelerating section are connected through chains (16);

A feeding stop detection point (12) for detecting whether a hub is fed or not and a feeding material level detection point (13) for detecting whether a hub is arranged at a feeding station or not are sequentially arranged on the side wall of the feeding acceleration section furnace body (1) along the feeding direction, and the linear distance between the central point of the feeding stop detection point (12) and the feeding inlet of the feeding acceleration section furnace body (1) is 5cm; the straight line distance between the center point of the feeding material level detecting point (13) and the center point of the feeding stop detecting point (12) is 5cm to 20cm;

a discharging speed conversion detection point (14) for detecting whether a wheel hub reaches a discharging station or not and a discharging material level detection point (15) for detecting whether the wheel hub exists at the discharging station or not are sequentially arranged on the side wall of the discharging acceleration section furnace body (1) along the discharging direction, and the linear distance between the central point of the discharging speed conversion detection point (14) and a discharging hole of the discharging acceleration section furnace body (1) is 80-100cm; the straight line distance between the center point of the discharging speed conversion detection point (14) and the center point of the discharging material level detection point (15) is 5-20cm;

photoelectric switches are arranged in the feeding stop detection point (12), the feeding material level detection point (13), the discharging speed conversion detection point (14) and the discharging material level detection point (15).

2. The multi-layer roller conveying system of the aluminum alloy hub heat treatment furnace as claimed in claim 1, wherein the main speed reducer (4) is positioned at the middle part of the furnace body (1).

3. The multi-layer roller conveying system of the aluminum alloy hub heat treatment furnace according to claim 1, wherein a speed reducer bracket (7) is welded on the furnace body (1).

4. The multi-layer roller conveyor system of an aluminum alloy hub heat treatment furnace according to claim 1, wherein the transmission sprocket (10) is connected with the conveying roller (2) by a key.

5. The multi-layer roller conveying system of the aluminum alloy wheel hub heat treatment furnace comprises an aluminum alloy wheel hub heat treatment furnace, wherein the aluminum alloy wheel hub heat treatment furnace comprises a furnace body (1) and at least one conveying roller unit layer which is arranged in a hearth and is used for conveying aluminum alloy wheel hubs, and the conveying roller unit layer comprises conveying rollers (2) which are arranged side by side; all conveying rollers (2) partially extend out of the furnace body (1), and the roller driving unit layer drives the conveying rollers (2) to rotate; a feeding accelerating section is defined at the feeding end of the furnace body (1), a discharging accelerating section is defined at the discharging end of the furnace body (1), the feeding accelerating section is an area formed by at least six conveying rollers (2) at the feeding port in the hearth, and the discharging accelerating section is an area formed by at least six conveying rollers (2) at the discharging port in the hearth;

Each roller driving unit layer comprises a main speed reducer (4), two sub-speed reducers (6) which are connected with the main speed reducer (4) and simultaneously drive all conveying rollers (2) in the furnace to rotate at a low speed, a feeding speed reducer (3) which drives the conveying rollers (2) positioned in a feeding accelerating section to rotate at a high speed and a discharging speed reducer (8) which drives the conveying rollers (2) positioned in a discharging accelerating section to rotate at a high speed,

one main speed reducer (4) is arranged on the furnace body (1) through a speed reducer bracket (7), the main speed reducer (4) is a double-output motor, two sub speed reducers (6) are symmetrically arranged relative to the main speed reducer (4), two output shafts of the main speed reducer (4) are connected with input shafts of the two sub speed reducers (6) through a coupling (5), the output shafts of the sub speed reducers (6) are connected with the end part of one conveying roller rod (2) positioned at the position of the sub speed reducer (6) through a sprocket coupling (9),

6. The multi-layer roller conveyor system of the aluminum alloy hub heat treatment furnace according to claim 5, wherein the main speed reducer (4) is positioned at the middle part of the furnace body (1).

7. The multi-layer roller conveying system of the aluminum alloy hub heat treatment furnace according to claim 5, wherein the speed reducer bracket (7) is welded on the furnace body (1).

8. The multi-layer roller conveyor system of an aluminum alloy hub heat treatment furnace according to claim 5, wherein the transmission sprocket (10) is connected with the conveying roller (2) by a key.

9. The multi-layer roller conveying system of the aluminum alloy wheel hub heat treatment furnace comprises an aluminum alloy wheel hub heat treatment furnace, wherein the aluminum alloy wheel hub heat treatment furnace comprises a furnace body (1) and at least one conveying roller unit layer which is arranged in a hearth and is used for conveying aluminum alloy wheel hubs, and the conveying roller unit layer comprises conveying rollers (2) which are arranged side by side; all conveying rollers (2) partially extend out of the furnace body (1), and the roller driving unit layer drives the conveying rollers (2) to rotate; a feeding accelerating section is defined at the feeding end of the furnace body (1), a discharging accelerating section is defined at the discharging end of the furnace body (1), the feeding accelerating section is an area formed by at least six conveying rollers (2) at the feeding port in the hearth, and the discharging accelerating section is an area formed by at least six conveying rollers (2) at the discharging port in the hearth;

Each roller driving unit layer comprises a main speed reducer (4), four sub-speed reducers (6) which are connected with the main speed reducer (4) and simultaneously drive all conveying rollers (2) in the furnace to rotate at a low speed, a feeding speed reducer (3) which drives the conveying rollers (2) positioned in a feeding accelerating section to rotate at a high speed and a discharging speed reducer (8) which drives the conveying rollers (2) positioned in a discharging accelerating section to rotate at a high speed,

the main speed reducer (4) is arranged on the furnace body (1) through a speed reducer bracket (7), the main speed reducer (4) is a double-output motor, the four sub speed reducers (6) are symmetrically arranged relative to the main speed reducer (4), and the four sub speed reducers (6) are all single-input double-output motors; two sub-reducers (6) positioned at one side of the main reducer (4) are defined as a first sub-reducer and a second sub-reducer respectively;

two output shafts of the main speed reducer (4) are connected with input shafts of two first sub-speed reducers through a shaft coupling (5), the first sub-speed reducers are arranged on the furnace body (1) through a speed reducer bracket (7), the first output shafts of the first sub-speed reducers are connected with the end part of one conveying roller rod (2) positioned at the position of the first sub-speed reducers through a chain wheel shaft coupling (9), the second output shafts of the first sub-speed reducers are connected with the input shafts of the second sub-speed reducers through the shaft coupling (5), the second sub-speed reducers are arranged on the furnace body (1) through the speed reducer bracket (7), and the first output shafts of the second sub-speed reducers are connected with the end part of one conveying roller rod (2) positioned at the position of the second sub-speed reducers through the chain wheel shaft coupling (9);

10. The multi-layer roller conveyor system of an aluminum alloy hub heat treatment furnace according to claim 9, wherein the main speed reducer (4) is located at the middle position of the furnace body (1).

11. The multi-layer roller conveyor system of an aluminum alloy hub heat treatment furnace according to claim 9, wherein the speed reducer bracket (7) is welded on the furnace body (1).

12. The multi-layer roller conveyor system of an aluminum alloy hub heat treatment furnace according to claim 9, wherein the transmission sprocket (10) is connected with the conveying roller (2) by a key.

13. The multi-layer roller conveying system of the aluminum alloy wheel hub heat treatment furnace comprises an aluminum alloy wheel hub heat treatment furnace, wherein the aluminum alloy wheel hub heat treatment furnace comprises a furnace body (1) and at least one conveying roller unit layer which is arranged in a hearth and is used for conveying aluminum alloy wheel hubs, and the conveying roller unit layer comprises conveying rollers (2) which are arranged side by side; all conveying rollers (2) partially extend out of the furnace body (1), and the roller driving unit layer drives the conveying rollers (2) to rotate; a feeding accelerating section is defined at the feeding end of the furnace body (1), a discharging accelerating section is defined at the discharging end of the furnace body (1), the feeding accelerating section is an area formed by at least six conveying rollers (2) at the feeding port in the hearth, and the discharging accelerating section is an area formed by at least six conveying rollers (2) at the discharging port in the hearth;

Each roller driving unit layer comprises a main speed reducer (4), six sub-speed reducers (6) which are connected with the main speed reducer (4) and simultaneously drive all conveying rollers (2) in the furnace to rotate at a low speed, a feeding speed reducer (3) which drives the conveying rollers (2) positioned in a feeding accelerating section to rotate at a high speed and a discharging speed reducer (8) which drives the conveying rollers (2) positioned in a discharging accelerating section to rotate at a high speed,

the main speed reducer (4) is arranged on the furnace body (1) through a speed reducer bracket (7), the main speed reducer (4) is a double-output motor, six sub speed reducers (6) are symmetrically arranged relative to the main speed reducer (4), the six sub speed reducers (6) are all single-input double-output motors, and two sub speed reducers (6) positioned at one side of the main speed reducer (4) are defined to be a first sub speed reducer, a second sub speed reducer and a third sub speed reducer respectively;

the two output shafts of the main speed reducer (4) are connected with the input shafts of two first sub speed reducers through a shaft coupling (5), the first sub speed reducers are arranged on the furnace body (1) through a speed reducer bracket (7), the first output shafts of the first sub speed reducers are connected with the end part of one conveying roller rod (2) at the position of the first sub speed reducers through a chain wheel shaft coupling (9), the second output shafts of the first sub speed reducers are connected with the input shafts of the second sub speed reducers through the shaft coupling (5), the second sub speed reducers are arranged on the furnace body (1) through a speed reducer bracket (7), the first output shafts of the second sub speed reducers are connected with the end part of one conveying roller rod (2) at the position of the second sub speed reducers through a chain wheel shaft coupling (9), the second output shafts of the second sub speed reducers are connected with the input shaft of the third sub speed reducers through a chain wheel shaft coupling (5), the third sub speed reducers are arranged on the furnace body (1), and the first output shafts of the third sub speed reducers are connected with the chain wheel shaft coupling (9) of the third sub speed reducers;

14. The multi-layer roller conveyor system of an aluminum alloy hub heat treatment furnace as claimed in claim 13, wherein the main speed reducer (4) is located at a middle position of the furnace body (1).

15. The multi-layer roller conveyor system of an aluminum alloy hub heat treatment furnace according to claim 13, wherein the speed reducer bracket (7) is welded on the furnace body (1).

16. The multi-layer roller conveyor system of an aluminum alloy hub heat treatment furnace as claimed in claim 13, wherein the transmission sprocket (10) is connected with the conveying roller (2) by a key.

17. The multi-layer roller conveying system of the aluminum alloy wheel hub heat treatment furnace comprises an aluminum alloy wheel hub heat treatment furnace, wherein the aluminum alloy wheel hub heat treatment furnace comprises a furnace body (1) and at least one conveying roller unit layer which is arranged in a hearth and is used for conveying aluminum alloy wheel hubs, and the conveying roller unit layer comprises conveying rollers (2) which are arranged side by side; all conveying rollers (2) partially extend out of the furnace body (1), and the roller driving unit layer drives the conveying rollers (2) to rotate; a feeding accelerating section is defined at the feeding end of the furnace body (1), a discharging accelerating section is defined at the discharging end of the furnace body (1), the feeding accelerating section is an area formed by at least six conveying rollers (2) at the feeding port in the hearth, and the discharging accelerating section is an area formed by at least six conveying rollers (2) at the discharging port in the hearth;

Each roller driving unit layer comprises a main speed reducer (4), more than six sub-speed reducers (6) which are connected with the main speed reducer (4) and simultaneously drive all conveying rollers (2) in the furnace to rotate at a low speed, a feeding speed reducer (3) which drives the conveying rollers (2) positioned in a feeding accelerating section to rotate at a high speed and a discharging speed reducer (8) which drives the conveying rollers (2) positioned in a discharging accelerating section to rotate at a high speed,

the main speed reducer (4) is arranged on the furnace body (1) through a speed reducer bracket (7), the main speed reducer (4) is a double-output motor, six sub speed reducers (6) are symmetrically arranged relative to the main speed reducer (4), the six sub speed reducers (6) are all single-input double-output motors, two sub speed reducers (6) which are defined to be positioned at one side of the main speed reducer (4) are respectively a first sub speed reducer, a second sub speed reducer, a third sub speed reducer and a … … Nth sub speed reducer, and N is a positive integer greater than 3;

two output shafts of the main speed reducer (4) are connected with input shafts of two first sub speed reducers through a shaft coupling (5), the first sub speed reducers are arranged on a furnace body (1) through a speed reducer bracket (7), the first output shafts of the first sub speed reducers are connected with the end part of a conveying roller rod (2) positioned at the position of the first sub speed reducer through a chain wheel shaft coupling (9), the second output shafts of the first sub speed reducers are connected with the input shafts of the second sub speed reducer through the shaft coupling (5), the first output shafts of the second sub speed reducers are arranged on the furnace body (1) through the speed reducer bracket (7), the first output shafts of the second sub speed reducers are connected with the end part of a conveying roller rod (2) positioned at the position of the second sub speed reducer through the chain wheel shaft coupling (9), the second output shafts of the second sub speed reducers are connected with the input shafts of third sub speed reducers through the shaft coupling (5) positioned at the position of the third sub speed reducer bracket (1), the first output shafts of the third sub speed reducers are connected with the first output shafts of the third sub speed reducers through the speed reducers (62) positioned at the position of the third sub speed reducer bracket (1) through the shaft coupling (5), the first output shafts of the third sub speed reducers are connected with the second output shafts of the third sub speed reducers are connected with the third shafts of the third speed reducer shafts of the speed reducer (2) at the speed reducer shafts of the speed reducer N1, the first output shaft of the Nth sub-speed reducer is connected with the end part of a conveying roller rod (2) positioned at the position of the Nth sub-speed reducer through a sprocket coupling (9);

18. The multi-layer roller conveyor system of an aluminum alloy hub heat treatment furnace as claimed in claim 17, wherein the main speed reducer (4) is located at a middle position of the furnace body (1).

19. The multi-layer roller conveyor system of an aluminum alloy hub heat treatment furnace according to claim 17, characterized in that a speed reducer bracket (7) is welded on the furnace body (1).

20. The multi-layer roller conveyor system of an aluminum alloy hub heat treatment furnace as claimed in claim 17, wherein the transmission sprocket (10) is connected with the conveying roller (2) by a key.