CN201241307Y - Novel dynamic load buffer and overload protection mechanism of milling and planing wheel drive system - Google Patents
Novel dynamic load buffer and overload protection mechanism of milling and planing wheel drive system Download PDFInfo
- Publication number
- CN201241307Y CN201241307Y CNU2008201120871U CN200820112087U CN201241307Y CN 201241307 Y CN201241307 Y CN 201241307Y CN U2008201120871 U CNU2008201120871 U CN U2008201120871U CN 200820112087 U CN200820112087 U CN 200820112087U CN 201241307 Y CN201241307 Y CN 201241307Y
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- Prior art keywords
- shaft coupling
- drive system
- dynamic load
- shear pin
- milling wheel
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Abstract
Disclosed is a novel dynamic load buffering and overload protection mechanism for a milling wheel drive system. The mechanism is composed of a high elastic coupling and a security shear pin. A driving member of the high elastic coupling is connected with a flywheel of an engine, a driven member is connected with a driving plate of a normal-closed clutch, the power transfer between the driving member and the driven member is realized through a plurality of high elastic cylindrical rubber bodies which are distributed uniformly along a circumference direction. The elastic deformation of the rubber bodies can effectively absorb the dynamic load produced by the running of the milling machine, so the aim that other elements in a transmission system are protected and are not damaged is obtained. The security shear pin is a metal cylindrical pin with a cutting groove, and is arranged between a crisscross transmission shaft of an universal joint in the drive system and an input terminal of a right-angle transmission reduction gearbox, the power can be transmitted to the milling wheel by passing the security shear pin; when an impact load exceeds a security payload of the drive system, the security shear pin is first cut break, so other important parts are guaranteed not to be damaged.
Description
Technical field the utility model relates to the milling wheel transmission mechanism of a kind of highway maintenance with milling machine; especially the milling wheel transmission mechanism that has dynamic load buffering and overload protection, to be specially adapted to milling width be below 1 meter and milling wheel adopts the milling wheel drive system of mechanical linked transmission.
The background technology milling machine is used for the damaged road surface of milling because the scrambling of pavement behavior, the time and mill dark big; the time and mill the depth, the time and material is hard, the time and material softer; the time and material is loose; the time and material is tight, so milling operating mode very severe is during milling; shock loading frequently occurs; dynamic load factor is very big, and dynamic load buffering and overload protecting mechanism should be set in the milling wheel drive system for this reason, with other actuated element in the protection drive system.Milling wheel drive system dynamic load buffering and overload protection form have at present: forms such as hydraulic cushion overload protection method, belt transmission buffering overload protection method.
Hydraulic cushion overload protection method is to utilize the compressibility of liquid and overload overflow valve to realize dynamic load buffering and overload protection, has the strong characteristics of buffering overload protection ability, and this method is applicable to hydraulic drive type drive system.Because hydraulicefficiency is low and the intrinsic technical characteristics such as frequent unlatching of overload overflow valve; must produce bigger influence to the operating efficiency of milling machine, thereby sort buffer overload protection technology is incompatible with pursuing efficient, energy-conservation requirements of the times now.
Belt transmission buffering overload protection method; be state-of-the-art buffering of present milling wheel drive system and overload protection form; the power of its motor passes to milling wheel efficiently by the joint group belt; utilize the flexibility of belt and the performance of skidding to carry out dynamic load buffering and overload protection in the course of work; its buffering overload protection effect is highly desirable; belong to machine driving because of belt transmission simultaneously, it has overcome the ineffective shortcoming of hydraulic drive.But because belt in the course of the work, weares and teares easily because of skidding makes belt, fall short of application life, thereby user's use cost height; Belt transmission generally is adapted at level transferring power at a high speed in addition, and in order to obtain rational milling wheel rotating speed, its drive system need adopt the reductor that volume is little, the transfer torque ability is strong, and this reductor manufacturing cost is higher.So belt transmission type milling machine is a kind of high-performance, expensive product, its is fit to high-end user demand.
The summary of the invention the purpose of this utility model provides that a kind of form of structure is simple, reliability is high, the dynamic load of high efficiency buffering and overload protecting mechanism, and can be widely used in milling width be below 1 meter and milling wheel adopts the milling wheel drive system of mechanical linked transmission.
The technical scheme that its technical problem that solves the utility model adopts is: the right angle transmission reduction box of this protection mechanism is connected with milling wheel by chain, on right angle transmission reduction box, be connected with drive chain case, include highly elastic shaft coupling and safe shear pin, highly elastic shaft coupling is installed between engine flywheel and the normally closed type clutch; Safety device is installed between Hooke's joint power transmission shaft and the right angle transmission reduction box input.
Described highly elastic shaft coupling is made up of shaft coupling driving link, cylindrical high elastic rubber body and shaft coupling driven member, the shaft coupling driving link links to each other with engine flywheel by bolt, the shaft coupling driven member links to each other with the normally closed type clutch driving plate by bolt, between shaft coupling driving link and shaft coupling driven member, be connected with the high resiliency cylindrical rubber, the high resiliency cylindrical rubber is a plurality of, evenly distributes at circumferencial direction.
Described safety device comprises input flange, needle bearing, safe shear pin, nut and output spline housing, input flange is socketed on the output spline housing, between input flange and output spline housing needle bearing is arranged, input flange is connected with nut by safe shear pin with the output spline housing.
Described safe shear pin is a kind of round metal pin that has grooving.
Beneficial effect: by device highly elastic shaft coupling and safe shear pin in the milling wheel drive system, realize dynamic load buffering and overload protection function, wherein highly elastic shaft coupling plays the buffering dynamic load, and safe shear pin plays overload protective function.
Highly elastic shaft coupling described in the utility model is made up of driving link, cylindrical high elastic rubber body and driven member part.Its shaft coupling driving link links to each other with engine flywheel by bolt; the power of motor is imported thus; the shaft coupling driven member also links to each other by the driving disc spacing pressing of bolt with the normally closed type clutch; power spreads out of thus; the yielding coupling master; from the transmission of power between part is by the master; the equally distributed high resiliency cylindrical rubber of several circumferencial directions body between driven member is realized; this high resiliency cylindrical rubber body has high resiliency; become rigidity; shock-resistant; high temperature resistant; characteristics such as wear-resistant; when shock loading does not appear in system; the master of its yielding coupling; driven member rotates with same rotating speed; but shock loading appears at that moment in the milling process; the driven member rotating speed of its yielding coupling will take place sharply to change; and its driving link still turns round with former speed because of its inertia; very big dynamic loading then occurred in the system this moment; but, thereby reached the purpose that other elements are not damaged in the protection drive system because the elastic deformation of rubber bodies has absorbed most shock loadings effectively in the shaft coupling.
Safe shear pin described in the utility model is a kind of round metal pin that has grooving; be arranged between the Hooke's joint power transmission shaft and right angle transmission reduction box input of drive system; power will just can pass to milling wheel through safe shear pin; when shock loading is cushioned the back but its value during still above the safe load of drive system component; safe shear pin is at first cut off, and guarantees that each important spare part of protection power train under especially big shock loading is not damaged.
The utility model has the advantages that the function that can realize cushioning dynamic load and overload protection, and manufacturing cost and use cost is low, high efficiency.
Description of drawings further specifies the utility model below in conjunction with drawings and Examples.
Fig. 1 is an example structure system drawing of the present utility model.
Fig. 2 is the assembling drawing between engine flywheel, highly elastic shaft coupling, the normally closed type clutch.
Fig. 3 is the three-dimensional assembling drawing of highly elastic shaft coupling.
Fig. 4 is the assembling drawing of safety device.
Fig. 5 is the structure chart of safe shear pin.
The specific embodiment
Embodiment 1: a kind of novel milling wheel drive system dynamic load buffering and overload protecting mechanism; in Fig. 1; engine flywheel 1 outputs power to normally closed type clutch 3 by highly elastic shaft coupling 2, again through axle 4, output flange 5, Hooke's joint power transmission shaft 6, safety device 7, right angle transmission speed reducer 8, drive chain case 9 the most at last transmission of power give milling wheel 10.
In Fig. 2, Fig. 3, highly elastic shaft coupling 2 comprises shaft coupling driving link 2-1, cylindrical high elastic rubber body 2-2 and shaft coupling driven member 2-3.Wherein, shaft coupling driving link 2-1 is connected on the engine flywheel 1 by bolt 15, and power is imported thus; Shaft coupling driven member 2-3 links to each other with normally closed type clutch driving plate 3-1 by bolt 12; Several cylindrical high elastic rubber body 2-2 put into the groove of shaft coupling driven member 2-3, and insert together in the shaft coupling driving link 2-1 corresponding grooves, its power promptly spreads out of by the order of shaft coupling driving link 2-1, cylindrical high elastic rubber body 2-2, shaft coupling driven member 2-3, clutch driving plate 3-1.Highly elastic shaft coupling 2 and normally closed type clutch 3 form an enclosed construction by being connected shell 13 and bell housing 14 is supported on the flywheel shell of engine 11.Axle 4 links to each other with normally closed type clutch driven plate 3-2 by spline, and power can be passed to output flange 5 from here after the clutch closure.
In Fig. 4, Fig. 5, safety device 7 comprises input flange 7-1, needle bearing 7-2, safety pin 7-3, nut 7-4 and output spline housing 7-5.Wherein, input flange 7-1 is supported on the output spline housing 7-5 by needle bearing 7-2, and links together by 2 safety pin 7-4,2 nut 7-5; transferring power; once shock loading is excessive in the transmission system, safe shear pin will be cut off, and protects other important driving members.
Claims (4)
1, a kind of novel milling wheel drive system dynamic load buffering and overload protecting mechanism, the right angle transmission reduction box of this protection mechanism is connected with milling wheel by chain, on right angle transmission reduction box, be connected with drive chain case, it is characterized in that: include highly elastic shaft coupling and safety device, highly elastic shaft coupling is installed between engine flywheel and the normally closed type clutch; Safety device is installed between Hooke's joint power transmission shaft and the right angle transmission reduction box input.
2, a kind of novel milling wheel drive system dynamic load buffering according to claim 1 and overload protecting mechanism; it is characterized in that: described highly elastic shaft coupling is made up of shaft coupling driving link, cylindrical high elastic rubber body and shaft coupling driven member; the shaft coupling driving link links to each other with engine flywheel by bolt; the shaft coupling driven member links to each other with the normally closed type clutch driving plate by bolt; between shaft coupling driving link and shaft coupling driven member, be connected with the high resiliency cylindrical rubber; the high resiliency cylindrical rubber is a plurality of, evenly distributes at circumferencial direction.
3, a kind of novel milling wheel drive system dynamic load buffering according to claim 1 and overload protecting mechanism; it is characterized in that: described safety device comprises input flange, needle bearing, safe shear pin, nut and output spline housing; input flange is socketed on the output spline housing; between input flange and output spline housing needle bearing is arranged, input flange is connected with nut by safe shear pin with the output spline housing.
4, a kind of novel milling wheel drive system dynamic load buffering according to claim 3 and overload protecting mechanism, it is characterized in that: described safe shear pin is a kind of round metal pin that has grooving.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201120871U CN201241307Y (en) | 2008-05-12 | 2008-05-12 | Novel dynamic load buffer and overload protection mechanism of milling and planing wheel drive system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201120871U CN201241307Y (en) | 2008-05-12 | 2008-05-12 | Novel dynamic load buffer and overload protection mechanism of milling and planing wheel drive system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201241307Y true CN201241307Y (en) | 2009-05-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201120871U Expired - Lifetime CN201241307Y (en) | 2008-05-12 | 2008-05-12 | Novel dynamic load buffer and overload protection mechanism of milling and planing wheel drive system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201241307Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562058A (en) * | 2011-12-05 | 2012-07-11 | 三一重型装备有限公司 | Overload protecting device for running wheel of coal mining machine and coal mining machine provided with overload protecting device |
| CN103569731A (en) * | 2013-11-05 | 2014-02-12 | 安徽工贸职业技术学院 | Buffer device of paper cutter |
| CN105134208A (en) * | 2015-07-09 | 2015-12-09 | 三一重型装备有限公司 | Travel wheel overload protection apparatus, travelling mechanism and coal cutter |
| CN105970786A (en) * | 2016-07-05 | 2016-09-28 | 王柱盛 | Automatic control cutter with overload protection function |
| EP3828431A1 (en) * | 2019-11-26 | 2021-06-02 | Christian Maier GmbH & Co. KG Maschinenfabrik | Rotary feed-through |
| US11203842B2 (en) | 2019-10-10 | 2021-12-21 | Caterpillar Paving Products Inc. | Torque limiting device for road milling machine |
-
2008
- 2008-05-12 CN CNU2008201120871U patent/CN201241307Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562058A (en) * | 2011-12-05 | 2012-07-11 | 三一重型装备有限公司 | Overload protecting device for running wheel of coal mining machine and coal mining machine provided with overload protecting device |
| CN102562058B (en) * | 2011-12-05 | 2015-04-22 | 三一重型装备有限公司 | Coal mining machine |
| CN103569731A (en) * | 2013-11-05 | 2014-02-12 | 安徽工贸职业技术学院 | Buffer device of paper cutter |
| CN105134208A (en) * | 2015-07-09 | 2015-12-09 | 三一重型装备有限公司 | Travel wheel overload protection apparatus, travelling mechanism and coal cutter |
| CN105134208B (en) * | 2015-07-09 | 2018-11-13 | 三一重型装备有限公司 | Traveling wheel overload protection arrangement, walking mechanism and coalcutter |
| CN105970786A (en) * | 2016-07-05 | 2016-09-28 | 王柱盛 | Automatic control cutter with overload protection function |
| CN105970786B (en) * | 2016-07-05 | 2017-03-15 | 王柱盛 | Carry overload protection automatically controls cutting machine |
| US11203842B2 (en) | 2019-10-10 | 2021-12-21 | Caterpillar Paving Products Inc. | Torque limiting device for road milling machine |
| EP3828431A1 (en) * | 2019-11-26 | 2021-06-02 | Christian Maier GmbH & Co. KG Maschinenfabrik | Rotary feed-through |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090520 |
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| CX01 | Expiry of patent term |