CN200981517Y - Back door opening-closing structure for end tipper - Google Patents
Back door opening-closing structure for end tipper Download PDFInfo
- Publication number
- CN200981517Y CN200981517Y CN 200620132718 CN200620132718U CN200981517Y CN 200981517 Y CN200981517 Y CN 200981517Y CN 200620132718 CN200620132718 CN 200620132718 CN 200620132718 U CN200620132718 U CN 200620132718U CN 200981517 Y CN200981517 Y CN 200981517Y
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- Prior art keywords
- back door
- hook
- lock
- moment
- pulling piece
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Abstract
The utility model relates to a back door hoist structure of the end-dump vehicle, and the end-dump vehicle comprises an accessory carriage assembly, a carriage back cross beam, a platform floor and a back door, the back door hoist structure comprises a lock lap which is fixed in the lower portion of the back door, a hook which is connected to the carriage back cross beam by pin joint, locking hook portions which are provided on one side of the hook and are locked on the lock lap or separated with the lock lap, and the lock hook portion which is separated with the lock lap is hided by the platform floor. The back door hoist structure further comprises a drawing component which applies a first moment to the hook and has one end connected to the accessory carriage assembly and the other end connected to the other side of the hook by pin joint, a returning elastic component which has one end connected to the locking hook portions and the other end connected to the carriage back cross beam and applies a second moment to the hook, and the direction of the second moment and the direction of the first moment are opposite. The back door hoist structure can effectively ensure the opening and closing of the back door when the self-dumping vehicle does the rear-tipping, the structure is simple and practical, and simultaneously each component of the structure is not easy to be damaged under any working condition.
Description
Technical field
The utility model relates to a kind of road dumping car, especially relates to a kind of back door on-off structure of end-dump truck.
Background technology
With reference to figure 1, a kind of back door on-off structure of known end-dump truck is taken 3 etc. by rigidity connecting rod 1, L type latch hook 2 and lock and is constituted.One end of rigidity connecting rod 1 is articulated in subframe assembly 4, and the other end is articulated in L type latch hook 2.Lock is taken 3 bottoms that are positioned at the back door (not shown) of dumping car, and lock takes 3 and separates with L type latch hook 2 when opening with L type latch hook 2 interlockings or at the back door can cut out at the back door time.L type latch hook 2 is hinged on the Aft cross member of dumping car, and an end and the rigidity connecting rod 1 of L type latch hook 2 are hinged, the other end has the latch hook portion that takes 3 interlockings with lock of being used for, and the part of latch hook portion is in the outside (that is, along the right-hand side among Fig. 1) of Aft cross member.Like this, as shown in Figure 1, subframe assembly 4, rigidity connecting rod 1 and L type latch hook 2 have formed a four-bar linkage structure, when the body of tipper carriage hypsokinesis is unloaded, power transmits to rigidity connecting rod 1 from subframe assembly 4, and is delivered to L type latch hook 2, thereby applies C.C.W. moment to L type latch hook 2, make L type latch hook 2 and lock take 3 and be separated, thereby make the back door be able to smooth unlatching.After finishing the retroverted state in compartment after the dumping car discharged, lock is taken 3 and is locked together with L type latch hook 2 again, thereby makes car door and compartment be in closed state.
There is following defective in the back door on-off structure of above-mentioned end-dump truck:
1. because the latch hook portion of L type latch hook is positioned at the outside of Aft cross member when the dumping car hypsokinesis unload, so the goods that is fallen is easily pounded and is bumped and damage.
2. the back door on-off structure of this end-dump truck is too complicated, breaks down inconvenient maintenance, and manufacturing cost height easily.
Summary of the invention
In view of the above-mentioned defective that exists in the prior art, a purpose of the present utility model provides a kind of back door on-off structure of end-dump truck, and it can prevent that the goods that falls from damaging the member in this structure when unloading.
Another purpose of the present utility model provides a kind of back door on-off structure of end-dump truck, and it is easy to maintenance, and can be behind discharging vehicle when dumping goods, return, can open or close stable performance simultaneously very easily with dumping the back door.
To achieve these goals, the utility model provides a kind of back door on-off structure of end-dump truck, this dumping car comprises subframe assembly, Aft cross member, cabin floor and back door, and this back door on-off structure comprises: lock is taken, and this lock is taken the bottom of being fixed in this back door; Hook, this hook is articulated in above-mentioned Aft cross member, and a side of this hook has interlocking takes or takes the latch hook portion that separates with this lock in this lock, and this cabin floor covers with this lock and takes this latch hook portion that separates; Pulling piece, an end of this pulling piece is connected in above-mentioned subframe assembly, and the other end is articulated in the opposite side of this hook, and this pulling piece applies first moment to this hook; And the return elastic component, an end of this return elastic component is connected in this latch hook portion, and the other end is connected in above-mentioned Aft cross member, and this return elastic component applies second moment to this hook, and the direction of this second moment is opposite with the direction of this first moment.
Preferably, this lock joint welding is connected on the bottom at this back door.
Preferably, this latch hook portion has opening groove up, and this lock is taken has horizontally extending cylinder, and this closing cylinder is connected to this groove or separates from this groove.
Preferably, above-mentioned Aft cross member comprises hook support, and this hook support is fixed in above-mentioned Aft cross member, and this hook is articulated in this hook support.
Preferably, the other end of this return elastic component is connected in this hook support.
Preferably, be fixed with the pulling piece support on the above-mentioned subframe assembly, an end of this pulling piece is connected in this pulling piece support.
Preferably, this return elastic component is extension spring.
Preferably, this cabin floor all covers with this lock and takes this latch hook portion that separates.
Preferably, this cabin floor partly covers with this lock and takes this latch hook portion that separates.
Preferably, this pulling piece is a drag-line.
Advantage of the present utility model and beneficial effect be, the unlatching at back door when described end-dump truck back door on-off structure can guarantee to turn over behind the dumping car effectively, close, and simple and practical, each member in this structure is all not fragile under any operating mode simultaneously.
Description of drawings
Fig. 1 is a kind of scheme drawing of back door on-off structure of known end-dump truck.
Fig. 2 is the scheme drawing of the back door on-off structure of end-dump truck of the present utility model, wherein links up with and locks the mutual interlocking state together that is in of taking.
Fig. 3 is the scheme drawing of the back door on-off structure of end-dump truck of the present utility model, wherein links up with and locks the state that is separating that is in of taking.
Fig. 4 is the scheme drawing of the back door on-off structure of end-dump truck of the present utility model, and wherein hook is in and takes the state that separates with lock fully.
The specific embodiment
In order to further specify principle of the present utility model and structure, now in conjunction with the accompanying drawings preferred embodiment of the present utility model is elaborated, yet the described embodiment usefulness for furnishing an explanation and explaining only can not be used for limiting scope of patent protection of the present utility model.
As Fig. 2-shown in Figure 4, the back door on-off structure of end-dump truck of the present utility model is used to open or close the back door 40 of dumping car, this dumping car comprises compartment 50, subframe assembly 70, Aft cross member 60, cabin floor 51 and back door 40, compartment 50 is hinged on the subframe assembly 70 by pivot 52, so that the front end in compartment 50 (left hand end as shown in Figure 2) can lifting or can descend during in discharged in when unloading.
As Fig. 2-shown in Figure 4, the back door on-off structure of this end-dump truck comprises: lock takes 30, and this lock is taken 30 bottoms of being fixed in back door 40; Hook 20, this hook 20 is articulated in above-mentioned Aft cross member 60 and can pivots around a pivotal axis 24, one side of this hook 20 has interlocking and takes 30 or take the 30 latch hook portions 23 that separate with this lock in this lock, and this cabin floor 51 covers with this lock and takes 30 these latch hook portions 23 that separate; Flexible pulling piece 10, an end 10a of this pulling piece 10 is connected in above-mentioned subframe assembly 70, and another end 10b is articulated in the opposite side of this hook 20; And return elastic component 22, an end of this return elastic component 22 is connected in this latch hook portion 23, and the other end is connected in Aft cross member 60.
Lock takes 30 can be fixed on the bottom at back door 40 by the mode of welding, be used for cooperating hook 20 to come closing back door 40 or open back door 40.
The lock take 30 and link up with 20 between multiple combination is arranged, can use the various overlap joint fit systems in the known technology.Lock take 30 and hook 20 shape and structure also be not limited to shape shown in Fig. 2-Fig. 4 and structure, but can suitably adjust according to actual needs.
In order to make hook 20 and the lock combination of taking between 30 more firm, can take 30 at lock and along continuous straight runs is set (in other words, direction perpendicular to paper) cylinder 31 of Yan Shening, and has opening groove 231 up in the latch hook portion 23, lock take 30 with hook 20 when locking together cylinder 31 snap in the groove 231, lock take 30 with hook 20 when separating cylinder 31 from groove 231, breaks away from, can increase hook 20 like this and lock and take the firmness that combines between 30.
The end of linking up with 20 left sides (left-hand side shown in Fig. 1) has through hole, and bearing pin inserts in the through hole.The end 10b of pulling piece 10 is connected in this bearing pin, thereby makes pulling piece 10 to pivot around this bearing pin.
The bottom of hook 20 has the through hole 27 that is used to install pivot 24, makes hook 20 to pivot around pivot 24.
Aft cross member 60 preferably includes hook support 21, and hook support 21 can be fixed on the Aft cross member 60 by modes such as welding, can be hinged on this hook support 21 and link up with 20, makes that like this fixing of hook 20 is more stable.
As shown in Figure 3, at hook 20 with after separate at back door 40, the latch hook portion 23 of hook 20 is by the back end shield of cabin floor 51,20 the latch hook portion 23 of preferably linking up with is fully by the back end shield of cabin floor 51, bumps and damages with regard to having guaranteed that latch hook portion 23 is not fallen when the dumping car hypsokinesis is unloaded goods is pounded like this.
Return elastic component 22 1 ends are fixed in the latch hook portion 23, and the other end of return elastic component 22 is fixed on hook support 21.The effect of return elastic component 22 is to apply a moment to hook 20, and this moment is opposite with the moment direction that pulling piece imposes on hook 20.
This return elastic component 22 is preferably extension spring.
To the working process of end-dump truck of the present utility model back door on-off structure be elaborated below.
As shown in Figure 2, the lock take 30 with the hook 20 interlockings together, back door 40 is in closed condition, thereby pulling piece 10 is tightened to hook 20 and is applied C.C.W. first moment, return elastic component 22 also is in extended state and applies clws second moment to hook 20 at this moment, simultaneously first moment is greater than second moment, thereby guaranteed that back door 40 is in closed condition.
Referring to figs. 2 and 3, suppose that 50 to be in closed condition be to be the h1 (see figure 2) in the compartment for the end 10a of pulling piece and the straight-line distance between the 10b, when 50 hypsokinesis of the compartment of dumping car are unloaded, because 50 edges, compartment rotate counterclockwise, thereby make the end 10a of pulling piece and distance h 2 (see figure 3)s between the 10b less than h1.Like this, pulling piece puts on hook 20 first moment and puts on second moment of hook 20 less than return elastic component 22, clockwise rotates around pivot 24 thereby link up with 20, and lock is taken 30 and is able to break away from from linking up with 20 gradually.
Take 30 at lock and break away from a flash from linking up with 20, latch hook portion 23 is positioned under the cabin floor 51, and is completely or partially covered by cabin floor 51.Under the situation that latch hook portion 23 is covered by cabin floor 51 fully, the goods of whereabouts can not pounded fully and run into latch hook portion 23, thereby has guaranteed that hook 20 is not damaged.Under the situation that latch hook portion 23 is partly covered by cabin floor 51, expose cabin floor 51 owing to have only the latch hook portion 23 of part, and in the compartment when 50 hypsokinesis are to maximum angle, latch hook portion 23 still can be covered by cabin floor 51, and this moment, the quantity that falls of goods was maximum, pounded and bumped and damage thereby can avoid linking up with 20 goods that fallen to a certain extent when lot cargo falls.
As shown in Figure 4, back door 40 (not shown) are complete opening, and railway carriage 50 is in maximum reclined position, and lock is taken 30 and broken away from from linking up with 20 fully.
After discharged, opposite with said process, the home position is got back in compartment 50 gradually under the effect of power, and lock is taken 30 and is locked on hook 20, and pulling piece is also tightened gradually and made return elastic component 22 stretch.Back door 40 is fully closed compartment 50 like this.
To sum up, the unlatching at back door when end-dump truck of the present utility model back door on-off structure can guarantee to turn over behind the dumping car effectively, close, and simple and practical, each member in this structure is all not fragile under any operating mode simultaneously.
Claims (10)
1. the back door on-off structure of an end-dump truck, this dumping car comprises subframe assembly, Aft cross member, cabin floor and back door, it is characterized in that, this back door on-off structure comprises:
Lock is taken, and this lock is taken the bottom of being fixed in this back door;
Hook, this hook is articulated in above-mentioned Aft cross member, and a side of this hook has interlocking takes or takes the latch hook portion that separates with this lock in this lock, and this cabin floor covers with this lock and takes this latch hook portion that separates;
Flexible pulling piece, an end of this pulling piece is connected in above-mentioned subframe assembly, and the other end is articulated in the opposite side of this hook, and this pulling piece applies first moment to this hook; And
The return elastic component, an end of this return elastic component is connected in this latch hook portion, and the other end is connected in above-mentioned Aft cross member, and this return elastic component applies second moment to this hook, and the direction of this second moment is opposite with the direction of this first moment.
2. back door as claimed in claim 1 on-off structure is characterized in that this lock joint welding is connected on the bottom at this back door.
3. back door as claimed in claim 1 on-off structure is characterized in that, this latch hook portion has opening groove up, and this lock is taken has horizontally extending cylinder, and this closing cylinder is connected to this groove or separates from this groove.
4. back door as claimed in claim 1 on-off structure is characterized in that above-mentioned Aft cross member comprises hook support, and this hook support is fixed in above-mentioned Aft cross member, and this hook is articulated in this hook support.
5. back door as claimed in claim 4 on-off structure is characterized in that, the described other end of this return elastic component is connected in this hook support.
6. back door as claimed in claim 1 on-off structure is characterized in that, is fixed with the pulling piece support on the above-mentioned subframe assembly, and an end of this pulling piece is connected in this pulling piece support.
7. back door as claimed in claim 1 on-off structure is characterized in that, this return elastic component is extension spring.
8. back door as claimed in claim 1 on-off structure is characterized in that, this cabin floor all covers with this lock takes this latch hook portion that separates.
9. back door as claimed in claim 1 on-off structure is characterized in that, this cabin floor partly covers with this lock takes this latch hook portion that separates.
10. back door as claimed in claim 1 on-off structure is characterized in that, this pulling piece is a drag-line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620132718 CN200981517Y (en) | 2006-08-22 | 2006-08-22 | Back door opening-closing structure for end tipper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620132718 CN200981517Y (en) | 2006-08-22 | 2006-08-22 | Back door opening-closing structure for end tipper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200981517Y true CN200981517Y (en) | 2007-11-28 |
Family
ID=38908679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620132718 Expired - Fee Related CN200981517Y (en) | 2006-08-22 | 2006-08-22 | Back door opening-closing structure for end tipper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200981517Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101786433A (en) * | 2010-03-24 | 2010-07-28 | 山东迅力特种汽车有限公司 | Turnover-type self-discharging semitrailer with low gravity centre supported by rear hub |
| CN101856988A (en) * | 2010-06-21 | 2010-10-13 | 三一重型装备有限公司 | Self-locking mechanism of discharging gate of self-dumping transport vehicle and self-dumping transport vehicle |
| CN101985329A (en) * | 2010-09-20 | 2011-03-16 | 扬州市金威机械有限公司 | Medium-sized hopper assembly |
| KR101977766B1 (en) * | 2017-11-21 | 2019-05-14 | (주)하나로특장 | Cargo box automatic lock device for scum dump and dump truck |
-
2006
- 2006-08-22 CN CN 200620132718 patent/CN200981517Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101786433A (en) * | 2010-03-24 | 2010-07-28 | 山东迅力特种汽车有限公司 | Turnover-type self-discharging semitrailer with low gravity centre supported by rear hub |
| CN101786433B (en) * | 2010-03-24 | 2013-01-02 | 山东迅力特种汽车有限公司 | Turnover-type self-discharging semitrailer with low gravity centre supported by rear hub |
| CN101856988A (en) * | 2010-06-21 | 2010-10-13 | 三一重型装备有限公司 | Self-locking mechanism of discharging gate of self-dumping transport vehicle and self-dumping transport vehicle |
| CN101856988B (en) * | 2010-06-21 | 2012-01-04 | 三一重型装备有限公司 | Self-locking mechanism of discharging gate of self-dumping transport vehicle and self-dumping transport vehicle |
| CN101985329A (en) * | 2010-09-20 | 2011-03-16 | 扬州市金威机械有限公司 | Medium-sized hopper assembly |
| KR101977766B1 (en) * | 2017-11-21 | 2019-05-14 | (주)하나로특장 | Cargo box automatic lock device for scum dump and dump truck |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071128 Termination date: 20090922 |