CN202621571U - Shunting type hot rolling mill main drive reduction gear box - Google Patents

Shunting type hot rolling mill main drive reduction gear box Download PDF

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Publication number
CN202621571U
CN202621571U CN 201220275371 CN201220275371U CN202621571U CN 202621571 U CN202621571 U CN 202621571U CN 201220275371 CN201220275371 CN 201220275371 CN 201220275371 U CN201220275371 U CN 201220275371U CN 202621571 U CN202621571 U CN 202621571U
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CN
China
Prior art keywords
shaft
gear shaft
gear
shift
output gear
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn - After Issue
Application number
CN 201220275371
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Chinese (zh)
Inventor
陈亮
郑光
薛美华
吕海明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing High Speed Transmission Equipment Group Co Ltd
Nanjing High Speed and Accurate Gear Group Co Ltd
Original Assignee
Nanjing High Speed and Accurate Gear Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Nanjing High Speed and Accurate Gear Group Co Ltd filed Critical Nanjing High Speed and Accurate Gear Group Co Ltd
Priority to CN 201220275371 priority Critical patent/CN202621571U/en
Application granted granted Critical
Publication of CN202621571U publication Critical patent/CN202621571U/en
Anticipated expiration legal-status Critical
Withdrawn - After Issue legal-status Critical Current

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Abstract

The utility model relates to a shunting type hot rolling mill main drive reduction gear box, wherein a box body of the reduction gear box is formed by an upper box body, a middle box body and a lower box body. An output shaft comprises a long output gear shaft and a short output gear shaft, two independent drive systems with the same structures and parameters are symmetrically located on two sides of the long output gear shaft, the short output gear shaft is arranged between the upper box body and the middle box body through a bearing in a supporting mode, and the long output gear shaft and each of shafts in the independent drive systems are arranged between the middle box body and the lower box body through bearings in a supporting mode. Each independent drive system comprises an input gear shaft and a middle gear shaft, a high-low speed gearshift mechanism is arranged on the middle gear shaft, and a high-low speed gearshift gear of the high-low speed gearshift mechanism is meshed with a high-low speed gear of the input gear shaft; an output gear is installed on the long output gear shaft through keys, a gear on the middle gear shaft is meshed with the output gear on the long output gear shaft, and a gear on the long output gear shaft is meshed with a gear on the short output gear shaft; and the high-low speed gearshift mechanism is arranged on the middle gear shaft and can be synchronously adjusted by a synchronous gearshift device.

Description

Shunting hot-rolling mill main transmission reduction gear box
Technical field
The utility model relates to a kind of hot rolling main transmission reduction gear box, especially a kind of shunting hot-rolling mill main transmission reduction gear box.
Background technology
The main transmission reduction gear box is one of key equipment in the equipment of hot rolling in the non-ferrous metal; In the hot rolling field in non-ferrous metal, hot rolling main transmission reduction gear box generally all is to drive two output shafts simultaneously by a motor, the mode of operation of this single input dual output; For powerful hot rolling main transmission reduction gear box; Not only need be equipped with more powerful motor, and each travelling gear, especially import gear shaft and need possess bigger mechanical strength., high-power hot rolling main transmission reduction gear box is improved, two-way output is respectively by transmission system single driving independently for this reason; Adopt the transmission mode of dual input dual output; This mode of operation, though can solve the more powerful motor of needs outfit that conventional gearbox exists preferably, and each travelling gear; Especially import the problem that gear shaft need possess bigger mechanical strength; But the stationary problem of two groups of output shafts but can influence product quality, even the two-way transmission mechanism accurately matees, also tends to the small fluctuation of speed occur because the momentary load that two-way output exists changes the input motor that causes two same models.
In recent years, because the product specification of non-ferrous metal single chassis hot rolling is increasing and kind more and more, this just has higher requirement to the moment of torsion and the range of speeds of gear-box output.No matter be above-mentioned traditional hot rolling main transmission reduction gear box, still, generally all have only a kind of speed ratio, can not satisfy the processing request of non-ferrous metal single chassis hot-rolling mill many products to the hot rolling main transmission reduction gear box of its improved dual input dual output.Therefore, how satisfying big specification of single chassis hot-rolled product and diversified demand, reduce the shared space of entire equipment, is the important topic of paying close attention in the industry.And this demand and non-ferrous metal hot rolling main transmission gearbox are closely related.
The utility model content
The purpose of the utility model is: excessive and motor speed can't satisfy the practical problem of many products rolling mill practice to the shared space of present big specification non-ferrous metal hot rolled plate rolling equipment, and a kind of new shunting hot-rolling mill main transmission reduction gear box is provided.
The purpose of the utility model is achieved in that a kind of shunting hot-rolling mill main transmission reduction gear box, comprises casing, input gear shaft and output shaft, it is characterized in that:
A) described casing is made up of upper box, middle casing and lower box, connects through bolt successively between them;
B) output shaft is long output gear shaft and short output gear shaft, and the independent transmission system symmetry that the two-way structure and parameter is identical is positioned at long output gear shaft both sides, and each in long output gear shaft, short output gear shaft and the independent transmission system is parallel to each other; Wherein, in the joint portion of upper box and middle casing, each in long output gear shaft and the independent transmission system passed through bearings in middle casing and lower box joint portion to short output gear shaft through bearings;
C) independent transmission system comprises input gear shaft and intermediate gear shaft, and intermediate gear shaft is provided with height quick change retaining device, the height quick change retaining gear in the height quick change mechanism respectively with the input gear shaft in high low speed gears engaged; Through key an output gear has been installed on the long output gear shaft, the output gear engagement on the gear of intermediate gear shaft and the long output gear shaft, long output gear shaft cogs with short output gear shaft and is meshing with each other; The intermediate gear shaft of two-way independent transmission system is provided with height quick change retaining device, and height quick change retaining device is through synchronous gearshift adjusted in concert.
In the utility model: the height quick change mechanism on the intermediate gear shaft is: fixedly mount a speed governing external splines cover through key on the intermediate gear shaft; A high speed power shift gear and a low speed power shift gear are for being located at speed governing external splines cover both sides through bearing respectively; High speed and low speed power shift gear overlap the spline segment that a side all contains and speed governing external splines cover is corresponding towards the speed governing external splines; The speed governing external splines puts the inner spline housing that is provided with coupling; The outer wall of inner spline housing is provided with the driving chute; Overdrive inner spline housing at speed governing external splines cover and slide at a high speed or on the spline segment of low speed power shift gear by the logical chute that drives of synchronous gearshift, make inner spline housing or simultaneously and the spline segment engagement of speed governing external splines cover and high speed power shift gear, or make inner spline housing simultaneously and the spline segment of speed governing external splines cover and low speed power shift gear mesh.
In the utility model: the high low-speed gear in the described input gear shaft is meant: the gear on the input gear shaft is a low-speed gear, and the gear that is installed on the input gear shaft through key is a high gear.
In the utility model: described synchronous gearshift is made up of fork, declutch shift shaft, shift fork pivoted arm, slide block; Casing is stretched out in the end of declutch shift shaft; The axis of declutch shift shaft and the axis normal of intermediate gear shaft; Fork is fixedly mounted on the declutch shift shaft end through key, and two pairs of shift fork pivoted arms are fixedly mounted on through key and form two shift forks on the declutch shift shaft, and the top of each shift fork pivoted arm is provided with equal slide block; The position of two shift forks corresponds respectively to the inner spline housing in the height quick change mechanism of two-way independent transmission system, and the slide block on shift fork pivoted arm top places the driving chute of corresponding inner spline housing.
In the utility model: also be provided with the cylinder that is fixedly mounted on the casing in the gearshift synchronously, cylinder rotates declutch shift shaft through the connecting rod driving pendulum rod.
In the utility model: the joint portion of the joint portion of declutch shift shaft and casing and declutch shift shaft and support is equipped with bearing.
In the utility model: casing is all stretched out at the two ends of said declutch shift shaft, and the declutch shift shaft two ends all are installed with fork through key, the cylinder of two synchronization actions of fixed installation on the casing; Declutch shift shaft between two shift forks is provided with the support that is supported in casing.
The advantage of the utility model is, because casing is divided into upper box, middle casing and lower box three parts, and the installation strong point of each is located at the joint portion of upper, middle and lower casing respectively, assembling and safeguard all very convenient; Because the same long output gear shaft of independent transmission system driven in common that the two-way structure and parameter is identical; Have under the prerequisite of identical output parameter; Can suitably reduce standard to gear-box internal mechanical intensity; Reduce production costs, also reduced the high-power requirement that gear-box must satisfy the motor unit simultaneously; Owing on the intermediate gear shaft of the two-way independent transmission system of gear-box, be provided with height quick change retaining device; Height quick change retaining device is by synchronous gearshift adjusted in concert; Thoroughly change hot-rolling mill main transmission reduction gear box and can only possess the situation of single moment of torsion and speed ratio, thereby satisfied the requirement of more products rolling mill practice speed; Because gearshift adopts cylinder control synchronously, has improved remote control ability of the present invention.Compact conformation of the present invention, machining accuracy is high, have two kinds of rotating speeds outputs of height, stationarity is good, and especially two groups of reducing gears adopt independent motor to drive, and have promoted the transmitted power of gear-box, make it can export bigger moment of torsion.
Description of drawings
Fig. 1 is the external structure sketch map of the utility model embodiment.
Fig. 2 is that Fig. 1 E is to view.
Fig. 3 is the A-A cutaway view of Fig. 1.
Fig. 4 is the B-B cutaway view of Fig. 1.
Fig. 5 is the C-C cutaway view of Fig. 3.
Among the figure: 1, upper box, 2, middle casing, 3, lower box, 4, the input gear shaft, 5, the low speed power shift gear; 6, high gear, 7, inner spline housing, 8, the high speed power shift gear, 9, speed governing external splines cover, 10, intermediate gear shaft; 11, output gear, 12, long output gear shaft, 13, fork, 14, declutch shift shaft, 15, the shift fork pivoted arm; 16, slide block, 17, short output gear shaft, 18, cylinder, 19, support.
The specific embodiment
Accompanying drawing discloses the concrete structure of the utility model embodiment without limitation, below in conjunction with accompanying drawing the utility model embodiment is done to describe further.
Visible by Fig. 1, the casing of present embodiment comprises upper box 1, middle casing 2 and lower box 3, connects through bolt successively between them.
Combine Fig. 3 Fig. 4 visible by figure; Output shaft is long output gear shaft 12 and short output gear shaft 17; The independent transmission system symmetry that the two-way structure and parameter is identical is positioned at long output gear shaft 12 both sides, and each in long output gear shaft 12, short output gear shaft 17 and the independent transmission system is parallel to each other; Wherein, in the joint portion of upper box 1 with middle casing 2, each in long output gear shaft 12 and the independent transmission system passed through bearings in middle casing 2 and lower box 3 joint portions to short output gear shaft 17 through bearings.
Independent transmission system comprises input gear shaft 4 and intermediate gear shaft 10; Intermediate gear shaft 10 is provided with height quick change retaining device; High speed power shift gear 8 in the height quick change mechanism and low speed power shift gear 5 respectively with input gear shaft 4 in high low speed gears engaged; Wherein, the gear on the input gear shaft 4 is a low-speed gear, and the gear that is installed on the input gear shaft 4 through key is a high gear 6; Long output gear shaft 12 cogs with short output gear shaft 17 and is meshing with each other, and through key an output gear 11 has been installed on the long output gear shaft 12, output gear 11 engagements on the gear of intermediate gear shaft 10 and the long output gear shaft 12; The intermediate gear shaft of two-way independent transmission system is provided with height quick change retaining device; Wherein, Height quick change mechanism is: overlap 9 through speed governing external splines of key fixed installation on the intermediate gear shaft 10; A high speed power shift gear 8 and a low speed power shift gear 5 overlap 9 both sides for being located at the speed governing external splines through bearing respectively; High speed quick change retaining gear 8 and low speed power shift gear 5 overlap 9 one sides towards the speed governing external splines and all contain the spline segment corresponding with speed governing external splines cover 9; Speed governing external splines cover 9 is provided with the inner spline housing 7 of coupling, and the outer wall of inner spline housing 7 is provided with the driving chute, is slided on the spline segment of speed governing external splines cover 9 and high speed power shift gear 8 or low speed power shift gear 5 by the logical chute inner spline housing 7 of overdriving that drives of synchronous gearshift; Make inner spline housing 7 or simultaneously and the spline segment engagement of speed governing external splines cover 9 and high speed power shift gear 8, or make inner spline housing 7 simultaneously and simultaneously with the spline segment engagement of speed governing external splines cover 9 and low speed power shift gear 5.
Combine Fig. 2 and Fig. 5 visible by Fig. 1; In the present embodiment; Gearshift is made up of cylinder 18, fork 13, declutch shift shaft 14, shift fork pivoted arm 15, slide block 16 synchronously; Casing is stretched out at the both ends of declutch shift shaft 14, the axis normal of the axis of declutch shift shaft 14 and intermediate gear shaft 10, and fork 13 is fixedly mounted on declutch shift shaft 14 ends through key; Two pairs of shift fork pivoted arms 15 are fixedly mounted on through key and form two shift forks on the declutch shift shaft 14; The position that the top of each shift fork pivoted arm 15 is provided with 16, two shift forks of equal slide block corresponds respectively to the inner spline housing 9 in the height quick change mechanism of two-way independent transmission system, and the slide block 16 on shift fork pivoted arm 15 tops places the driving chute of corresponding inner spline housing 7.The cylinder 18 of two synchronization actions, cylinder 18 rotate declutch shift shaft 14 through connecting rod driving pendulum rod 13, on the declutch shift shaft between two shift forks 14, also are provided with the support 19 that is supported in casing.
In the present embodiment, declutch shift shaft 14 also is provided with bearing with the joint portion of casing and the joint portion of declutch shift shaft 14 and support 19.
During practical implementation, an end of said declutch shift shaft 14 all stretches out casing, and the end that declutch shift shaft stretches out casing is installed with fork 13 through key, and a cylinder of fixed installation 18, one cylinders 18 also can be realized the present invention through connecting rod driving pendulum rod 13 on the casing.
During practical implementation, adopt other synchronous gearshifts, the synchronous gearshift like manual or Electromagnetic Control also has same technique effect.

Claims (7)

1. a shunting hot-rolling mill main transmission reduction gear box comprises casing, input gear shaft and output shaft, it is characterized in that:
A) described casing is made up of upper box, middle casing and lower box, connects through bolt successively between them;
B) output shaft is long output gear shaft and short output gear shaft, and the independent transmission system symmetry that the two-way structure and parameter is identical is positioned at long output gear shaft both sides, and each in long output gear shaft, short output gear shaft and the independent transmission system is parallel to each other; Wherein, in the joint portion of upper box and middle casing, each in long output gear shaft and the independent transmission system passed through bearings in middle casing and lower box joint portion to short output gear shaft through bearings;
C) independent transmission system comprises input gear shaft and intermediate gear shaft, and intermediate gear shaft is provided with height quick change retaining device, the height quick change retaining gear in the height quick change mechanism respectively with the input gear shaft in high low speed gears engaged; Through key an output gear has been installed on the long output gear shaft, the output gear engagement on the gear of intermediate gear shaft and the long output gear shaft, long output gear shaft cogs with short output gear shaft and is meshing with each other; The intermediate gear shaft of two-way independent transmission system is provided with height quick change retaining device, and height quick change retaining device is through synchronous gearshift adjusted in concert.
2. shunting hot-rolling mill main transmission reduction gear box according to claim 1; It is characterized in that: the height quick change mechanism on the intermediate gear shaft is: fixedly mount a speed governing external splines cover through key on the intermediate gear shaft; A high speed power shift gear and a low speed power shift gear are for being located at speed governing external splines cover both sides through bearing respectively; High speed and low speed power shift gear overlap the spline segment that a side all contains and speed governing external splines cover is corresponding towards the speed governing external splines; The speed governing external splines puts the inner spline housing that is provided with coupling; The outer wall of inner spline housing is provided with the driving chute; Overdrive inner spline housing at speed governing external splines cover and slide at a high speed or on the spline segment of low speed power shift gear by the logical chute that drives of synchronous gearshift, make inner spline housing or simultaneously and the spline segment engagement of speed governing external splines cover and high speed power shift gear, or make inner spline housing simultaneously and the spline segment of speed governing external splines cover and low speed power shift gear mesh.
3. shunting hot-rolling mill main transmission reduction gear box according to claim 1; It is characterized in that: the high low-speed gear in the described input gear shaft is meant: the gear on the input gear shaft is a low-speed gear, and the gear that is installed on the input gear shaft through key is a high gear.
4. according to the described shunting hot-rolling mill of one of claim 1 ~ 3 main transmission reduction gear box; It is characterized in that: described synchronous gearshift is made up of fork, declutch shift shaft, shift fork pivoted arm, slide block; Casing is stretched out in the end of declutch shift shaft; The axis of declutch shift shaft and the axis normal of intermediate gear shaft; Fork is fixedly mounted on the declutch shift shaft end through key, and two pairs of shift fork pivoted arms are fixedly mounted on through key and form two shift forks on the declutch shift shaft, and the top of each shift fork pivoted arm is provided with equal slide block; The position of two shift forks corresponds respectively to the inner spline housing in the height quick change mechanism of two-way independent transmission system, and the slide block on shift fork pivoted arm top places the driving chute of corresponding inner spline housing.
5. shunting hot-rolling mill main transmission reduction gear box according to claim 4 is characterized in that: also be provided with the cylinder that is fixedly mounted on the casing in the gearshift synchronously, cylinder rotates declutch shift shaft through the connecting rod driving pendulum rod.
6. shunting hot-rolling mill main transmission reduction gear box according to claim 5, it is characterized in that: the joint portion of the joint portion of declutch shift shaft and casing and declutch shift shaft and support is equipped with bearing.
7. shunting hot-rolling mill main transmission reduction gear box according to claim 6, it is characterized in that: casing is all stretched out at the two ends of said declutch shift shaft, and the declutch shift shaft two ends all are installed with fork through key, the cylinder of two synchronization actions of fixed installation on the casing; Declutch shift shaft between two shift forks is provided with the support that is supported in casing.
CN 201220275371 2012-06-12 2012-06-12 Shunting type hot rolling mill main drive reduction gear box Withdrawn - After Issue CN202621571U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220275371 CN202621571U (en) 2012-06-12 2012-06-12 Shunting type hot rolling mill main drive reduction gear box

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220275371 CN202621571U (en) 2012-06-12 2012-06-12 Shunting type hot rolling mill main drive reduction gear box

Publications (1)

Publication Number Publication Date
CN202621571U true CN202621571U (en) 2012-12-26

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Application Number Title Priority Date Filing Date
CN 201220275371 Withdrawn - After Issue CN202621571U (en) 2012-06-12 2012-06-12 Shunting type hot rolling mill main drive reduction gear box

Country Status (1)

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CN (1) CN202621571U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102699037A (en) * 2012-06-12 2012-10-03 南京高精齿轮集团有限公司 Divided flow type master transmission reduction gear box of hot rolling mill

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102699037A (en) * 2012-06-12 2012-10-03 南京高精齿轮集团有限公司 Divided flow type master transmission reduction gear box of hot rolling mill
CN102699037B (en) * 2012-06-12 2014-04-02 南京高精齿轮集团有限公司 Divided flow type master transmission reduction gear box of hot rolling mill

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C14 Grant of patent or utility model
GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20121226

Effective date of abandoning: 20140402

RGAV Abandon patent right to avoid regrant