CN105711652A - Torsion bar assisted turnover mechanism - Google Patents
Torsion bar assisted turnover mechanism Download PDFInfo
- Publication number
- CN105711652A CN105711652A CN201610054489.XA CN201610054489A CN105711652A CN 105711652 A CN105711652 A CN 105711652A CN 201610054489 A CN201610054489 A CN 201610054489A CN 105711652 A CN105711652 A CN 105711652A
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- CN
- China
- Prior art keywords
- torsion bar
- point
- bar
- connecting rod
- arm bar
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/08—Front or rear portions
- B62D25/10—Bonnets or lids, e.g. for trucks, tractors, busses, work vehicles
- B62D25/12—Parts or details thereof
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
- E05C17/00—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith
- E05C17/02—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Superstructure Of Vehicle (AREA)
- Springs (AREA)
Abstract
The invention relates to a torsion bar assisted turnover mechanism and aims at solving the problem of difficult closing caused by a large turning torque of a torsion bar turnover mechanism.The torsion bar assisted turnover mechanism comprises a base and a turnover part hinged to the base, wherein a torsion bar is arranged on the base and is mutually parallel to the rotating axis of the turnover part, one end of the torsion bar is fixedly connected with the base, the other end of the torsion bar is the rotating end rotating with respect to the base, and the rotating end is fixedly connected with a force arm bar.In addition, the torsion bar assisted turnover mechanism further comprises a connecting rod, wherein one end of the connecting rod is hinged to the force arm bar, and the other end of the connecting rod is hinged to the turnover part.The base, the force arm bar, the connecting rod and the turnover part in the torsion bar turnover mechanism form a four-connecting-rod mechanism, the force moment in a later turnover period can be increased in the turnover process of engine cover opening, while the force moment of the torsion bar to the turnover part in the later period of the turnover process of engine cover opening is decreased, accordingly the pull force required for engine cover closing is decreased, and an engine cover is easy to close.
Description
Technical field
The present invention relates to a kind of switching mechanism, more particularly, it relates to a kind of torsion bar booster type double leval jib switching mechanism.
Background technology
Torsion bar turnover mechanism provides power-assisted so that the upset of some articulated mounting is opened by the moment of torsion of torsion bar, owing to it is simple and reliable for structure, therefore uses in a large amount of occasions, for instance open hood for power assisting device in engineering machinery.
The torsion bar turnover mechanism used in engineering machinery is generally divided into single torsion bar turnover mechanism and double; two torsion bar turnover mechanism.For single torsion bar turnover mechanism, its torsion bar center and upset center superposition, torsion bar one end spline is connected with vehicle frame, and the other end and turnover bracket are fixed and be connected, this end can relative frame rotation, the moment of torsion of torsion bar generation is directly delivered on back cover；
For double; two torsion bar turnover mechanisms, owing to having two parallel torsion bars, torsion bar center is misaligned with upset center, in this mechanism, torsion bar one end spline is connected with vehicle frame, and the other end can rotate by relative frame, is provided with at this end and fixes the arm bar being connected with torsion bar, and be connected with turnover bracket by the roller of arm bar end, the moment of torsion that torsion bar produces is delivered on back cover by roller.
Torsion bar turnover mechanism is applied, such as in engineering machinery in the switching process of hood, in the elastic range of torsion bar, along with hood downwardly turns over the increase of rotational angle, power produced by torsion bar upper arm bar end linearly increases, but the sine curve that hood produced gravitational moment in switching process is flip angle increases, and when hood upset is to horizontal level (flip angle is 90 degree), its gravitational moment reaches maximum.Therefore downwardly turning over along with hood, the moment of torsion of torsion bar generation increases with the gravitational moment difference of hood, needs manpower to overcome this torque difference when shutting hood, if this difference is too big, then can cause tail-off problem laboriously.Additionally, for double; two torsion bar turnover mechanisms, in the process turned under hood, the contact point (roller) of arm bar and hood can away from the upset center of rotation of hood, the distance causing impetus that arm bar acts on hood and center of rotation increases, the torsion of torsion bar opplied moment on hood increases, and this also increases the power needed when hood is closed, increases the difficulty of closedown.
Summary of the invention
The technical problem to be solved in the present invention is that when overturning for existing torsion bar turnover mechanism, turning torque forges into the problem of being easily shut off, and provides a kind of torsion bar booster type switching mechanism that can provide stabilizing moment.
The present invention is such that providing a kind of torsion bar booster type switching mechanism for the technical scheme realizing its purpose, including pedestal, the flip piece being hinged on pedestal, described pedestal is provided with torsion bar, the center of rotation of described torsion bar and described flip piece is parallel to each other, one end of described torsion bar is fixing with pedestal to be connected, the other end is the turning end that opposite base rotates, and described turning end is fixedly connected with arm bar；Additionally including connecting rod, one end of described connecting rod is hinged with described arm bar, and the other end is hinged with described flip piece.
In above-mentioned torsion bar booster type switching mechanism, described connecting rod and described arm bar angle are acute angle.
In above-mentioned torsion bar booster type switching mechanism, the pin joint of described connecting rod and described arm bar is B point, and described arm bar is provided with the governor motion regulating B point to torsion bar Yu the spacing of arm bar junction point.
In above-mentioned torsion bar booster type switching mechanism, described connecting rod is the screw-button of adjustable in length, by regulating the length of connecting rod, it may be achieved arm bar.
In above-mentioned torsion bar booster type switching mechanism, governor motion can also is that and includes arranging described arm bar end slotted hole and retaining mechanism, the length direction of described slotted hole is consistent with the length direction of described arm bar, the jointed shaft of described connecting rod and arm bar is arranged in described slotted hole and can move the length direction of former slotted hole, and described retaining mechanism is jointed shaft position in described slotted hole described in locking positioning.
In above-mentioned torsion bar booster type switching mechanism, the junction point of described torsion bar and described arm bar is A point, the pin joint of described arm bar and described connecting rod is B point, the pin joint of described connecting rod and described flip piece is C point, the pin joint of described flip piece and described pedestal is D point, and the tetragon that described A point, B point, C point, D point are constituted is convex quadrangle.
The present invention compared with prior art, torsion bar turnover mechanism of the present invention on machine on hood time, pedestal is vehicle frame, flip piece is hood；Pedestal, arm bar, connecting rod, flip piece constitute quadric chain, and in the switching process opening hood, the spacing of the distance of A point and C point is gradually increased, thus improving hood to open the moment overturning the later stage in switching process；And in the switching process closing hood, the spacing of the distance of A point and C point gradually decreases, thus reducing the torsion bar torque to flip piece, thus reducing the pulling force that the cover that kills engine needs to use, hood is made easily to close.
Accompanying drawing explanation
Fig. 1 be bar switching mechanism of the present invention on machine on hood time structural representation.
Fig. 2 is the structural representation of bar switching mechanism of the present invention；
Fig. 3 is the structural representation of the connecting rod with adjustable in length；
Fig. 4 is the graph of a relation of back cover opening angle and required moment.
Parts title and sequence number in figure:
Back cover 1, torsion bar 2, pedestal 3, arm bar 4, connecting rod 5, flip piece 7.
Detailed description of the invention
Below in conjunction with accompanying drawing, specific embodiments is described.
The upset of the back cover that the torsion bar booster type switching mechanism in the present invention can be used for engineering machinery such as loader is opened, as it is shown in figure 1, when opening for back cover upset, pedestal 3 is the vehicle frame of loader, and flip piece 7 is the skeleton of back cover.
As shown in Figure 2, the flip piece 7 that this torsion bar booster type switching mechanism includes pedestal 3, is hinged on pedestal 3, pedestal 3 is provided with torsion bar 2, the center of rotation of torsion bar 2 and flip piece 7 is parallel to each other, one end of torsion bar 2 is fixing with pedestal 3 to be connected, and can install the adjustment device regulating the initial torsion of torsion bar at this end, and the other end is the turning end that opposite base rotates, turning end arranges spline, is fixedly connected with arm bar 4 by spline；Being connected to connecting rod 5 between the free end and flip piece 7 of arm bar 4, one end of connecting rod 5 is hinged with arm bar 5, and the other end is hinged with flip piece 7.
As shown in Figure 2, the junction point of torsion bar 2 and arm bar 4 is A point, and the pin joint of arm bar 4 and connecting rod 5 is B point, and the pin joint of connecting rod 5 and flip piece 7 is C point, the pin joint of flip piece 7 and pedestal 3 is D point, and the tetragon that A point, B point, C point, D point four are constituted is convex quadrangle.Connecting rod 5 and arm bar 4 angle are acute angle.When arm bar 4 rotates counterclockwise around A point, namely when opening hood, the distance between A point and C point is gradually increased, and between CB and DC, formed angle is gradually reduced to right angle by obtuse angle, thus improving hood to open the torque overturning the later stage in switching process；When arm bar rotates clockwise around A point, namely when closing hood, distance between A point and C point is gradually reduced, between CB and DC, formed angle is gradually increased by obtuse angle, thus reducing the torsion bar torque to flip piece, thus reducing the pulling force that the cover that kills engine needs to use, hood is made easily to close.Opening with the process closing back cover, this torsion bar booster type switching mechanism can provide relatively stable torque, this torque curve to have with the gravitational moment of flip piece to flip piece to mate concordance preferably.
In the present embodiment, when torsion bar specification is constant, can meeting, by changing the effective length of arm bar, the force value requirement that multiple back cover opens and closes, and apply the back cover with Different Weight and open, the effective length changing arm bar can pass through following two implementation.
Regulate the first to be achieved in that: realize the change of arm of force size by changing the length of connecting rod 5, as connecting rod 5 uses screw-button, the structure of screw-button is as shown in Figure 3, the distance L between U-shaped left screw rod in screw-button (screw thread is left-handed) and U-shaped right screw rod (screw thread is dextrorotation) is adjusted, thus realizing the change of the length of connecting rod 5 by rotating screw set.
The second regulated is achieved in that: governor motion includes arranging arm bar end slotted hole and retaining mechanism, the length direction of slotted hole is consistent with the length direction of arm bar, the jointed shaft of connecting rod and arm bar is arranged in described slotted hole and can move the length direction of former slotted hole, and described retaining mechanism is jointed shaft position in described slotted hole described in locking positioning.
What Fig. 4 represented is the difference of back cover gravitational moment and lifting mechanism output moment of torsion, this difference is the power that operator apply when being turned on and off back cover, 0 ° of expression back cover closed mode, 55 ° of expression back cover openings, as can be seen from the figure, when back cover cuts out to 0 ° from 55 °, difference between the two is gradually reduced, and the hood made easily is closed.
Claims (6)
1. a torsion bar booster type switching mechanism, including pedestal, the flip piece being hinged on pedestal, described pedestal is provided with torsion bar, the center of rotation of described torsion bar and described flip piece is parallel to each other, one end of described torsion bar is fixing with pedestal to be connected, the other end is the turning end that opposite base rotates, and described turning end is fixedly connected with arm bar；Characterized by further comprising connecting rod, one end of described connecting rod is hinged with described arm bar, and the other end is hinged with described flip piece.
2. torsion bar booster type switching mechanism according to claim 1, it is characterised in that described connecting rod and described arm bar angle are acute angle.
3. torsion bar booster type switching mechanism according to claim 1 and 2, it is characterised in that the pin joint of described connecting rod and described arm bar is B point, described arm bar is provided with the governor motion regulating B point to torsion bar Yu the spacing of arm bar junction point.
4. torsion bar booster type switching mechanism according to claim 1 and 2, it is characterised in that described connecting rod is the screw-button of adjustable in length.
5. torsion bar booster type switching mechanism according to claim 3, it is characterized in that governor motion includes arranging described arm bar end slotted hole and retaining mechanism, the length direction of described slotted hole is consistent with the length direction of described arm bar, the jointed shaft of described connecting rod and arm bar is arranged in described slotted hole and can move along the length direction of slotted hole, and described retaining mechanism is jointed shaft position in described slotted hole described in locking positioning.
6. torsion bar booster type switching mechanism according to claim 1, it is characterized in that the junction point of described torsion bar and described arm bar is A point, the pin joint of described arm bar and described connecting rod is B point, the pin joint of described connecting rod and described flip piece is C point, the pin joint of described flip piece and described pedestal is D point, and the tetragon that described A point, B point, C point, D point are constituted is convex quadrangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610054489.XA CN105711652B (en) | 2016-01-27 | 2016-01-27 | Torsion bar booster type switching mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610054489.XA CN105711652B (en) | 2016-01-27 | 2016-01-27 | Torsion bar booster type switching mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105711652A true CN105711652A (en) | 2016-06-29 |
| CN105711652B CN105711652B (en) | 2018-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610054489.XA Active CN105711652B (en) | 2016-01-27 | 2016-01-27 | Torsion bar booster type switching mechanism |
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| Country | Link |
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| CN (1) | CN105711652B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108612427A (en) * | 2018-03-05 | 2018-10-02 | 金刚幕墙集团有限公司 | A kind of swing-arm type skylight |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08230721A (en) * | 1995-02-27 | 1996-09-10 | Mitsubishi Motors Corp | Cab tilt device |
| CN201395999Y (en) * | 2009-05-25 | 2010-02-03 | 南京依维柯汽车有限公司 | Front engine veil gemel |
| CN102144071A (en) * | 2008-09-04 | 2011-08-03 | 奥迪股份公司 | Motor vehicle having a mechanism for moving a panel or door |
| KR20120033876A (en) * | 2010-09-30 | 2012-04-09 | 현대자동차주식회사 | One line type torsion bar of hinge for trunk lid |
| CN202966461U (en) * | 2012-12-28 | 2013-06-05 | 中国重汽集团济南动力有限公司 | Front overhang and turnover mechanism for light truck cab |
| CN103359182A (en) * | 2012-04-10 | 2013-10-23 | 通用汽车环球科技运作有限责任公司 | Decklid hinge counterbalance system with a combination torque rod and torque tube assembly |
| US20140367995A1 (en) * | 2013-06-12 | 2014-12-18 | Hyundai Motor Company | Cab tilting device |
| CN105128945A (en) * | 2015-08-18 | 2015-12-09 | 广西柳工机械股份有限公司 | Engine hood lifting mechanism |
-
2016
- 2016-01-27 CN CN201610054489.XA patent/CN105711652B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08230721A (en) * | 1995-02-27 | 1996-09-10 | Mitsubishi Motors Corp | Cab tilt device |
| CN102144071A (en) * | 2008-09-04 | 2011-08-03 | 奥迪股份公司 | Motor vehicle having a mechanism for moving a panel or door |
| CN201395999Y (en) * | 2009-05-25 | 2010-02-03 | 南京依维柯汽车有限公司 | Front engine veil gemel |
| KR20120033876A (en) * | 2010-09-30 | 2012-04-09 | 현대자동차주식회사 | One line type torsion bar of hinge for trunk lid |
| CN103359182A (en) * | 2012-04-10 | 2013-10-23 | 通用汽车环球科技运作有限责任公司 | Decklid hinge counterbalance system with a combination torque rod and torque tube assembly |
| CN202966461U (en) * | 2012-12-28 | 2013-06-05 | 中国重汽集团济南动力有限公司 | Front overhang and turnover mechanism for light truck cab |
| US20140367995A1 (en) * | 2013-06-12 | 2014-12-18 | Hyundai Motor Company | Cab tilting device |
| CN105128945A (en) * | 2015-08-18 | 2015-12-09 | 广西柳工机械股份有限公司 | Engine hood lifting mechanism |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108612427A (en) * | 2018-03-05 | 2018-10-02 | 金刚幕墙集团有限公司 | A kind of swing-arm type skylight |
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| Publication number | Publication date |
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| CN105711652B (en) | 2018-03-23 |
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