CN202538209U - Supporting leg vertical oil cylinder limiting protection device and fire-fighting truck provided with same - Google Patents
Supporting leg vertical oil cylinder limiting protection device and fire-fighting truck provided with same Download PDFInfo
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- CN202538209U CN202538209U CN2012201253615U CN201220125361U CN202538209U CN 202538209 U CN202538209 U CN 202538209U CN 2012201253615 U CN2012201253615 U CN 2012201253615U CN 201220125361 U CN201220125361 U CN 201220125361U CN 202538209 U CN202538209 U CN 202538209U
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- pin
- oil cylinder
- vertical oil
- supporting leg
- vertical
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Abstract
The utility model discloses a supporting leg vertical oil cylinder limiting protection device, which comprises a vertical sleeve and a locking pin, wherein a vertical oil cylinder is arranged on the vertical sleeve; a cylinder rod of the vertical oil cylinder is taken as a fixed end, and a cylinder barrel is taken as a movable end; the vertical sleeve is provided with pin holes which are distributed longitudinally and perforated transversely; each pin hole is positioned in an annular region on the head part of the cylinder barrel on the aspect of cross section; and the locking pin is inserted into a pin hole which is positioned above the cylinder sleeve and is closest to the locking pin, and is used for limiting the retraction of the vertical oil cylinder. According to the device, dual protection can be provided on the basis of original single protection, so that retraction amount of a supporting leg vertical oil cylinder is controlled, and accidental retraction situations are avoided. The utility model further discloses a fire-fighting truck provided with the supporting leg vertical oil cylinder limiting protection device.
Description
Technical field
The utility model relates to technical field of engineering machinery, particularly the vertical oil cylinder limiting and protecting device of the supporting leg of fire fighting truck.The utility model also relates to the fire fighting truck that is provided with said protective device.
Background technology
Elevating platform fire truck is a kind of fire-fighting vehicle that has chassis special, lifting arm support is installed; Car is provided with the hydraulic pressure raised platform; And there are professional operating personnel to operate; Supply fire fighter's fire such as skyscraper, tall and big facility, oil tank of putting out a fire to save life and property of ascending a height, the rescue trapped personnel rescues valuable goods and materials and accomplishes other rescue tasks.
Please refer to Fig. 1, Fig. 2, Fig. 1 is the retracted state sketch map of the movable supporting legs of Elevating platform fire truck; Fig. 2 is the view of stretching out of the movable supporting legs of Elevating platform fire truck.
Movable supporting legs 2 is used to support fire fighting truck, is box structure, and its arrangement form has " H " and " X " two kinds of forms; The supporting leg of two kinds of forms generally all is designed to telescopic structure, and at non-job state, movable supporting legs is a retracted state; In operation process, movable supporting legs is for stretching out state.
The vertical oil cylinder 3 of supporting leg is installed on the fire fighting truck movable supporting legs 2, and its axis normal is in ground, stretches out during operation to make tire liftoff, thereby supports the car load operation and come the whole vehicle of leveling through controlling its stroke.
Because in the course of work, movable supporting legs 2 supports whole getting on the bus and carries out operation, the vertical oil cylinder 3 of supporting leg stretches out, and makes tire liftoff, and comes the whole vehicle of leveling through the stroke of the vertical oil cylinder 3 of control supporting leg.The vertical oil cylinder 3 of supporting leg this moment is faced the counter-force of supporting leg with bearing.
Fire fighting truck in the market, the vertical oil cylinder 3 general hydraulic way of passing through of supporting leg guarantee that promptly the force value in the oil cylinder cavity is certain, reach and bear the purpose that outrigger reaction does not bounce back.
Please refer to Fig. 3, Fig. 4, Fig. 3 is the hydraulic schematic diagram that passes through the vertical oil cylinder of the locked supporting leg of balanced valve in the prior art; Fig. 4 is the hydraulic schematic diagram that passes through the vertical oil cylinder of the locked supporting leg of hydraulic lock in the prior art.
As shown in the figure, the hydraulic way that prevents the vertical oil cylinder of supporting leg 3 retractions is controlled through hydraulic valve and is realized, commonly used at present have balanced valve 4, a hydraulic lock 5 etc.
In the actual job engineering, because hydraulic pressure, the vertical oil cylinder 3 of supporting leg has certain amount of recovery through the regular hour; The huge fire fighting truck of particularly high rice number; Because outrigger reaction is bigger, under the situation that the vertical oil cylinder 3 of supporting leg self is locked, still to controls the amount of recovery of oil cylinder and guarantee that the zero accident rebound phenomenon takes place; Has only the locked single protection of oil cylinder and the vertical oil cylinder retraction of existing supporting leg is spacing, so need more safeguard measure.
Therefore, how for the spacing reliable protection more that provides of the vertical oil cylinder retraction of supporting leg, be the present technical issues that need to address of those skilled in the art.
The utility model content
First purpose of the utility model provides the vertical oil cylinder limiting and protecting device of a kind of supporting leg.This device can provide duplicate protection on the basis of original single protection, thereby realizes the control of the vertical oil cylinder amount of recovery of supporting leg and prevent the generation of unexpected retraction situation.
Second purpose of the utility model provides a kind of fire fighting truck that is provided with said protective device.
In order to realize above-mentioned first purpose, the utility model provides a kind of supporting leg vertical oil cylinder limiting and protecting device, comprises the vertical sleeve that is used to install said vertical oil cylinder, and the cylinder bar of said vertical oil cylinder is that stiff end, cylinder barrel are movable end, further comprises lock pin; Said vertical sleeve is provided with the pin-and-hole of vertical distribution and lateral direction penetrating, and each said pin-and-hole all is positioned at the annular region of cylinder barrel head on cross section, and said lock pin insertion is positioned at said cylinder barrel top and nearest with it pin-and-hole limits said vertical oil cylinder retraction.
Preferably, said pin-and-hole is two rows, and two row's pin-and-holes vertically are staggered.
Preferably, said lock pin is provided with and limits its axially movable positioning element.
Preferably, said positioning element is a pin assembly, comprises connecting axle and alignment pin; Said alignment pin is the staircase structural model of an end diameter less than other end diameter, and its miner diameter end vertical fixing is in an end of said connecting axle, and the other end of said connecting axle vertically passes the through hole of said lock pin one end and cooperates with said via clearance; The bigger diameter end of said alignment pin inserts another pin-and-hole near said lock pin, and is stuck on this pin-and-hole through its annular boss.
Preferably, the coaxial Coupling Shaft that the miner diameter end of said alignment pin is provided with, and be fixed in said connecting axle through said Coupling Shaft.
Preferably, the miner diameter end of said alignment pin and Coupling Shaft are provided with the catch perpendicular with it, form draw-in groove between the annular boss of said catch and bigger diameter end, and are stuck on the pin-and-hole through said draw-in groove.
Preferably, the diameter of said alignment pin bigger diameter end is identical with the diameter of said lock pin.
Preferably, the said connecting axle end that passes said lock pin is provided with handle.
Preferably, an end and the said Coupling Shaft of said connecting axle are welded to connect, and the other end is threaded with said handle.
For realizing above-mentioned second purpose, the utility model provides a kind of fire fighting truck, comprises chassis and movable supporting legs, and said movable supporting legs is provided with the vertical oil cylinder limiting and protecting device of above-mentioned each described supporting leg.
The utility model is on single protection basis; Increase mechanical position limitation, realize duplicate protection, the vertical oil cylinder limiting and protecting device of the supporting leg that is provided is made up of lock pin, vertical sleeve and vertical oil cylinder jointly; Be applicable to the vertical oil cylinder that the cylinder bar is fixed, cylinder barrel is movable; Wherein vertical sleeve is provided with the pin-and-hole of vertical distribution and lateral direction penetrating, when vertical oil cylinder is propped the car load operation, lock pin is installed in is positioned at cylinder barrel top and nearest with it pin-and-hole.If the amount of recovery of vertical oil cylinder is excessive; Then the annular region of its cylinder barrel head can arrive and be supported on the lock pin; Under the restriction of lock pin, can not continue retraction; Therefore the maximum amount of recovery of vertical oil cylinder is merely the distance of cylinder barrel head to the lower edge of lock pin, thus when realizing duty to the control of vertical oil cylinder amount of recovery and can prevent the generation of unexpected retraction situation, the safety and the reliability of the operation of assurance car load.
In addition, owing to mainly utilized existing structure to realize limit function, therefore simple in structure, easy to operate, cost is relatively low.
In a kind of preferred version, said pin-and-hole is two rows, and two row's pin-and-holes vertically are staggered.Like this, under the prerequisite that guarantees the vertical sleeve structural strength, the fore-and-aft distance between the adjacent pin-and-hole in the left and right sides is littler, thus make the cylinder barrel head to the distance of the lower edge of lock pin by further refinement, can obtain higher limit accuracy.
In another kind of preferred version; Said lock pin is provided with pin assembly, and said pin assembly comprises connecting axle and alignment pin, and the free degree on the said lock pin circumferencial direction is limited by pin-and-hole; The free degree is axially limited by alignment pin; Through pin-and-hole and alignment pin the displacement of lock pin all directions all is restricted, thereby lock pin is fixed on the vertical sleeve reliably, and this structure is easy to assembling, dismounting.
The fire fighting truck that the utility model provided is provided with the vertical oil cylinder limiting and protecting device of above-mentioned supporting leg; Because the vertical oil cylinder limiting and protecting device of above-mentioned supporting leg has above-mentioned technique effect, the fire fighting truck that is provided with the vertical oil cylinder limiting and protecting device of this supporting leg also should possess the corresponding techniques effect.
Description of drawings
Fig. 1 is the retracted state sketch map of the movable supporting legs of Elevating platform fire truck;
Fig. 2 is the view of stretching out of the movable supporting legs of Elevating platform fire truck;
Fig. 3 is the hydraulic schematic diagram that passes through the vertical oil cylinder of the locked supporting leg of balanced valve in the prior art;
Fig. 4 is the hydraulic schematic diagram that passes through the vertical oil cylinder of the locked supporting leg of hydraulic lock in the prior art;
Fig. 5 is the structural representation of the vertical oil cylinder of the vertical oil cylinder limiting and protecting device of supporting leg that the utility model provides;
Fig. 6 is the structural representation of the vertical sleeve of the vertical oil cylinder limiting and protecting device of supporting leg that the utility model provides;
Fig. 7 is the lock pin of the vertical oil cylinder limiting and protecting device of supporting leg that the utility model provides and the structural representation of pin assembly thereof;
Fig. 8 is the decomposing schematic representation of Fig. 7;
Front schematic view when Fig. 9 is in place for lock pin and pin assembly;
Figure 10 is the side view of Fig. 9;
Figure 11 is the local enlarged diagram of Fig. 9;
Figure 12 is the A-A view of Figure 11.
Among Fig. 1 to Fig. 4:
1. vertical oil cylinder 4. balanced valves of fixed supporting leg 2. movable supporting legs 3. supporting legs 5. hydraulic lock
Among Fig. 5 to Figure 12:
10. cylinder bar 20. cylinder barrels 30. vertical sleeve 40. pin-and-holes 50. lock pin 50-1. through holes 60. movable supporting legs 70. connecting axles 80. Coupling Shaft 90. catch 100. alignment pins 110. handles
The specific embodiment
The core of the utility model provides the vertical oil cylinder limiting and protecting device of a kind of supporting leg.This device can provide duplicate protection on the basis of original single protection, thereby realizes the control of the vertical oil cylinder amount of recovery of supporting leg and prevent the generation of unexpected retraction situation.
Another core of the utility model provides a kind of fire fighting truck that is provided with said protective device.
In order to make those skilled in the art person understand the utility model scheme better, the utility model is done further to specify below in conjunction with the accompanying drawing and the specific embodiment.
Please refer to Fig. 5, Fig. 6, Fig. 5 is respectively the vertical oil cylinder of the vertical oil cylinder limiting and protecting device of supporting leg that the utility model provides and the structural representation of vertical sleeve with Fig. 6.
In a kind of specific embodiment, the vertical oil cylinder limiting and protecting device of the supporting leg that the utility model provides is applicable to the vertical oil cylinder that the cylinder bar is fixed, cylinder barrel is movable.This vertical oil cylinder is made up of cylinder bar 10 and cylinder barrel 20, is installed in the vertical sleeve 30, and cylinder bar 10 is fixing with respect to vertical sleeve 30, and cylinder barrel 20 can move up and down along vertical sleeve 30 inwalls.
Because pin-and-hole 40 is staggered; Therefore under the prerequisite that guarantees vertical sleeve 30 structural strengths; Fore-and-aft distance between the adjacent pin-and-hole 40 in the left and right sides is littler, thus make cylinder barrel 20 heads to the distance of the lower edge of lock pin 50 by further refinement, can obtain higher limit accuracy.
The bearing of trend of above-mentioned pin-and-hole 40 is consistent with the length direction of movable supporting legs 60, it is understandable that, under the prerequisite that does not influence operation, the bearing of trend of pin-and-hole 40 also can be perpendicular to the length direction of movable supporting legs 60.
In order to prevent that lock pin 50 from moving axially, can fix through installing routine techniques means such as split pin, jump ring additional at lock pin 50 1 ends.A kind of reliable lock pin limit method of assembling, dismounting and switching performance that is easy to more is provided again here.
Please refer to Fig. 7, Fig. 8, Fig. 7 is the lock pin of the vertical oil cylinder limiting and protecting device of supporting leg that the utility model provides and the structural representation of pin assembly thereof; Fig. 8 is the decomposing schematic representation of Fig. 7.
Please refer to Fig. 9, Figure 10, Figure 11, Figure 12, the front schematic view when Fig. 9 is in place for lock pin and pin assembly; Figure 10 is the side view of Fig. 9; Figure 11 is the local enlarged diagram of Fig. 9; Figure 12 is the A-A view of Figure 11.
As shown in the figure, during the vehicle operation, the cylinder bar 10 of vertical oil cylinder is fixing with respect to vertical sleeve 30, and the cylinder barrel 20 of vertical oil cylinder stretches out along vertical sleeve 30 inwalls, props the car load operation.
According to the position of cylinder barrel 20 heads, lock pin 50 and pin assembly are installed.At first lock pin 50 is inserted on the vertical sleeve 30 and be positioned at cylinder barrel 20 above-head, and immediate with it pin-and-hole 40; Hold handle 110 then; The alignment pin 100 that makes pin assembly moves closing on the pin-and-hole; Thereby regulate the relative position of lock pin 50 and pin assembly, the alignment pin 100 of pin assembly can be inserted on the vertical sleeve from the nearer pin-and-hole of lock pin installing hole, and the catch 90 of alignment pin 100 is developed with the vertical sleeve outer surface; Under the gravity effect, the draw-in groove that the alignment pin 100 of pin assembly and catch are 90 just is stuck on this pin-and-hole automatically.
At this moment the displacement of lock pin 50 all directions all is restricted; If the amount of recovery of vertical oil cylinder is excessive; Therefore then the annular region of its cylinder barrel 20 heads can arrive and be supported on the lock pin 50, under the restriction of lock pin 50, can not continue retraction, and the maximum amount of recovery of vertical oil cylinder is merely the distance of cylinder barrel 20 heads to the lower edge of lock pin 50; Thereby to the control of vertical oil cylinder amount of recovery and can prevent the generation of unexpected retraction situation, guarantee the safety and the reliability of car load operation when realizing duty.
From figure, be not difficult to find out,, installation and removal become very simple because therefore connecting axle 70 can, can eliminate the influence of foozle on the one hand with respect to lock pin 50 motions; On the other hand, except that the pin-and-hole 40 at end, other each pin-and-holes 40 behind the lock pin 50 of packing into, both can pack into the pin-and-hole 40 of its above and below of the alignment pin 100 of pin assembly, another row's meta pin-and-hole 40 of side or below on it of also can packing into.
As a kind of possible replacement scheme, connecting axle 70 also can be fixedly connected with lock pin 50, but this kind configuration flexibility is relatively poor, and quality of fit is had higher requirements.
Because movable supporting legs 60 is made up of main box and vertical sleeve 30; Therefore the pin-and-hole 40 of the first half can be positioned within the wallboard scope of main box; The pin-and-hole 40 of the latter half can be positioned at outside the wallboard scope of main box, during near lock pin 50 is packed wallboard into pin-and-hole 40, because connecting axle 70 is across between lock pin 50 and Coupling Shaft 80; Therefore, can cross over wallboard and unaffected.
The vertical oil cylinder limiting and protecting device of above-mentioned supporting leg only is a kind of preferred version of the utility model, specifically is not limited thereto, and can make pointed adjustment according to actual needs on this basis, thereby obtain different embodiment.For example, move axially or the like,, just illustrate no longer one by one here because mode in the cards is more through other mechanics limit lock pins.
Except above-mentioned lifting arm support, the utility model also provides a kind of fire fighting truck, comprises chassis and movable supporting legs, and said movable supporting legs is provided with the vertical oil cylinder limiting and protecting device of supporting leg mentioned above, and all the other structures please refer to prior art, and this paper repeats no more.
Particularly, said fire fighting truck is an Elevating platform fire truck.
More than vertical oil cylinder limiting and protecting device of supporting leg and fire fighting truck that the utility model provided have been carried out detailed introduction.Used concrete example among this paper the principle and the embodiment of the utility model are set forth, the explanation of above embodiment just is used to help to understand the core concept of the utility model.Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (10)
1. the vertical oil cylinder limiting and protecting device of supporting leg comprises the vertical sleeve that is used to install said vertical oil cylinder, and the cylinder bar of said vertical oil cylinder is that stiff end, cylinder barrel are movable end, it is characterized in that, further comprises lock pin; Said vertical sleeve is provided with the pin-and-hole of vertical distribution and lateral direction penetrating, and each said pin-and-hole all is positioned at the annular region of cylinder barrel head on cross section, and said lock pin insertion is positioned at said cylinder barrel top and nearest with it pin-and-hole limits said vertical oil cylinder retraction.
2. the vertical oil cylinder limiting and protecting device of supporting leg according to claim 1 is characterized in that said pin-and-hole is two rows, and two row's pin-and-holes vertically are staggered.
3. the vertical oil cylinder limiting and protecting device of supporting leg according to claim 2 is characterized in that, said lock pin is provided with and limits its axially movable positioning element.
4. the vertical oil cylinder limiting and protecting device of supporting leg according to claim 3 is characterized in that said positioning element is a pin assembly, comprises connecting axle and alignment pin; Said alignment pin is the staircase structural model of an end diameter less than other end diameter, and its miner diameter end vertical fixing is in an end of said connecting axle, and the other end of said connecting axle vertically passes the through hole of said lock pin one end and cooperates with said via clearance; The bigger diameter end of said alignment pin inserts another pin-and-hole near said lock pin, and is stuck on this pin-and-hole through its annular boss.
5. the vertical oil cylinder limiting and protecting device of supporting leg according to claim 4 is characterized in that, the coaxial Coupling Shaft that the miner diameter end of said alignment pin is provided with, and be fixed in said connecting axle through said Coupling Shaft.
6. the vertical oil cylinder limiting and protecting device of supporting leg according to claim 5; It is characterized in that; Be provided with the catch perpendicular between the miner diameter end of said alignment pin and the Coupling Shaft, form draw-in groove between the annular boss of said catch and bigger diameter end, and be stuck on the pin-and-hole through said draw-in groove with it.
7. according to the vertical oil cylinder limiting and protecting device of each described supporting leg of claim 4 to 6, it is characterized in that the diameter of said alignment pin bigger diameter end is identical with the diameter of said lock pin.
8. the vertical oil cylinder limiting and protecting device of supporting leg according to claim 5 is characterized in that the end that said connecting axle passes said lock pin is provided with handle.
9. the vertical oil cylinder limiting and protecting device of supporting leg according to claim 8 is characterized in that, an end and the said Coupling Shaft of said connecting axle are welded to connect, and the other end is threaded with said handle.
10. a fire fighting truck comprises chassis and movable supporting legs, it is characterized in that, said movable supporting legs is provided with the vertical oil cylinder limiting and protecting device of aforesaid right requirement 1 to 9 each described supporting leg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201253615U CN202538209U (en) | 2012-03-28 | 2012-03-28 | Supporting leg vertical oil cylinder limiting protection device and fire-fighting truck provided with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201253615U CN202538209U (en) | 2012-03-28 | 2012-03-28 | Supporting leg vertical oil cylinder limiting protection device and fire-fighting truck provided with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202538209U true CN202538209U (en) | 2012-11-21 |
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ID=47158907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201253615U Expired - Lifetime CN202538209U (en) | 2012-03-28 | 2012-03-28 | Supporting leg vertical oil cylinder limiting protection device and fire-fighting truck provided with same |
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| Country | Link |
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| CN (1) | CN202538209U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103030070A (en) * | 2012-12-28 | 2013-04-10 | 中铁二十四局集团上海铁建工程有限公司 | Portal crane capable of travelling and operating on ramp |
| CN106629286A (en) * | 2016-12-13 | 2017-05-10 | 上海交通大学 | Falling testing tower |
-
2012
- 2012-03-28 CN CN2012201253615U patent/CN202538209U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103030070A (en) * | 2012-12-28 | 2013-04-10 | 中铁二十四局集团上海铁建工程有限公司 | Portal crane capable of travelling and operating on ramp |
| CN103030070B (en) * | 2012-12-28 | 2016-02-17 | 中铁二十四局集团上海铁建工程有限公司 | A kind of can the transfer crane of traveling and operation on ramp |
| CN106629286A (en) * | 2016-12-13 | 2017-05-10 | 上海交通大学 | Falling testing tower |
| CN106629286B (en) * | 2016-12-13 | 2019-11-15 | 上海交通大学 | It falls and tests tower |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170213 Address after: 221004 Jiangsu Province, Xuzhou City Yunlong District No. 165 Patentee after: Xugong fire safety equipment Co. Ltd. Address before: 221004 Xuzhou, Zhejiang Province, Jiangsu Road No. 165 Patentee before: Xuzhou Heavy Machinery Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20121121 |
|
| CX01 | Expiry of patent term |