CN102518392A - Telescopic arm and ambulance with telescopic arm - Google Patents
Telescopic arm and ambulance with telescopic arm Download PDFInfo
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- CN102518392A CN102518392A CN2011104450812A CN201110445081A CN102518392A CN 102518392 A CN102518392 A CN 102518392A CN 2011104450812 A CN2011104450812 A CN 2011104450812A CN 201110445081 A CN201110445081 A CN 201110445081A CN 102518392 A CN102518392 A CN 102518392A
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- arm
- telescopic
- oil cylinder
- joint
- telescopic oil
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Abstract
The invention discloses a telescopic arm, which comprises a first section arm and a second section arm capable of being slidingly arranged in the first section arm. A telescopic oil cylinder connected with the first section arm and the second section arm is arranged on the outsides of the first section arm and the second section arm, and the telescopic oil cylinder drives the two section arms to stretch out and draw back. The telescopic arm changes the mode that the telescopic oil cylinder is arranged in the first section arm in the past into a mode that the telescopic oil cylinder is arranged on the outsides of the first section arm and the second section arm, connected with the first section arm and the second section arm and used for driving the two section arms to stretch out and draw back. Therefore, assembly, disassembly and maintenance of the telescopic oil cylinder can be all conducted on the outside of the telescopic arm, and assembly and maintenance work of the telescopic arm are facilitated. In addition, more usable space is obtained in the first section arm so as to facilitate the increasing of section arm quantity of the whole telescopic arm and expand the largest extending length of the telescopic arm.
Description
Technical field
The present invention relates to the fire fighting truck technical field, particularly relate to a kind of telescopic arm.In addition, the invention still further relates to a kind of fire fighting truck with above-mentioned telescopic arm.
Background technology
Fire fighting truck is being brought into play crucial effects aspect society and the resident's security of the lives and property as being specifically designed to fire fighting and the first aid vehicle of speedily carrying out rescue work ensureing.Usually be equipped with various fire-fighting equipments and utensil on the fire fighting truck, for example water storing tank, giant etc., some is used for the fire fighting truck that building recovers and also is equipped with aerial ladder.When the building height that dangerous situation takes place uses collapsible aerial ladder when not being very high usually, this type aerial ladder each joint arm under off working state folds, when work then the effect at hydraulic jack down expansion to aerial stretching, extension.
Along with the development of building trade, high-rise building emerges in an endless stream, and the incident high-altitude problem of speedily carrying out rescue work also becomes a firemanic new problem.The lifting height of collapsible aerial ladder depends on the quantity that saves arm; The joint arm is many more, and its height that can reach after stretching is also just high more, but after finishing the work; The too much joint arm of quantity folds and will occupy very big space; Bring very big inconvenience for going of fire fighting truck, but also cause the overall dimensions of a car of fire fighting truck to exceed the regulation of country about the engineering truck overall dimensions easily, the aerial ladder that fire fighting truck was equipped with that therefore is used for speedily carrying out rescue work in the high-altitude is mainly telescopic aerial ladder.
So-called telescopic aerial ladder is exactly to adopt a plurality of joint arms that are sleeved on together to form telescopic arm, realizes the flexible of telescopic aerial ladder thereby under the driving of telescopic oil cylinder, can slide relatively between two adjacent joint arms.Except that outermost layer joint arm, each joint arm outside all is with another joint arm, and outermost layer joint arm is hinged on the fire fighting truck, can't move vertically, can only rotate around jointed shaft.
Specify the structure of telescopic arm commonly used at present below in conjunction with accompanying drawing.
Shown in Figure 1 is the internal construction sketch map of the present telescopic arm of using always; Telescopic arm to have four joint joint arms is an example; The afterbody that saves arm 1 at one of telescopic arm is fixedly connected with first telescopic oil cylinder 2; Be fixedly connected with second telescopic oil cylinder, 4, the first telescopic oil cylinders 2 at the afterbody of two joint arms 3 and stretch in the two joint arms 3 and is fixedly connected, be connected with away from an end of two joint arms, 3 afterbodys at second telescopic oil cylinder 4 and be used to drive three and save the leaf chain mechanism 7 that arms 5 and four save arms 6 with second telescopic oil cylinder 4.Telescopic arm is at first first telescopic oil cylinder, 2 elongations when stretching out, and two joint arms, 3 to four joints, 6 arms are stretched out from a joint arm 1 simultaneously, reach its stroke up to first telescopic oil cylinder 2.Subsequently, second telescopic oil cylinder 4 begins elongation, and three joint arms 5 and four joint arms 6 are also protruding under the acting in conjunction of second telescopic oil cylinder 4 and leaf chain mechanism 7.
Be not difficult to find the shortcoming that existing telescopic arm exists through above-mentioned introduction to existing telescopic arm; In this prior art telescopic arm commonly used will connect first telescopic oil cylinder 2 that a joint arm 1 and two saves arms 3 be arranged on one save arm 1 inside; And the inside of a joint arm 1 also will hold other joint arm; Make this just very limited joint arm inner space more crowded, all caused obstacle for the assembling of telescopic arm and maintenance.And the narrow joint arm quantity that can hold in the joint arm 1 that limited in space has also produced restriction to the accessible maximum length of telescopic arm.
Summary of the invention
The purpose of this invention is to provide a kind of telescopic arm, the assembling of this telescopic arm and keep in repair conveniently, and a joint can hold more joint arm in the arm.Another object of the present invention provides a kind of fire fighting truck with above-mentioned telescopic arm.
For solving the problems of the technologies described above, the present invention provides a kind of telescopic arm, comprising: a joint arm; Two joint arms are slidably disposed in the said joint arm, with said two joint arm outer setting the telescopic oil cylinder that is connected with the two are arranged at a said joint arm, and it is flexible that said telescopic oil cylinder drives said two joint arms.
Preferably, the cylinder barrel of said telescopic oil cylinder is connected with a said joint arm, and the piston rod of said telescopic oil cylinder is connected with said two joint arms.
Preferably, a said joint arm is provided with holder, and the cylinder barrel of said telescopic oil cylinder is installed on the said holder.
Preferably, be provided with groove at the arm head place of said two joint arms, the piston rod of said telescopic oil cylinder stretches in the said groove.
Preferably, be provided with through hole at the arm head place of a said joint arm, the piston rod of said telescopic oil cylinder passes said through hole and stretches in the said groove.
Preferably, on the arm head of a said joint arm, be connected with guide strip, the piston rod of said telescopic oil cylinder passes said guide strip simultaneously and said through hole stretches in the said groove.
Preferably, said groove away from said one the joint arm an end be provided with the baffle plate that is connected with the piston rod of said telescopic oil cylinder.
Preferably, said telescopic oil cylinder is one, is arranged on the upper surface of a said joint arm and said two joint arms between two parties.
Preferably, said telescopic oil cylinder is two, is symmetricly set on the both sides of a said joint arm and said two joint arm upper surfaces.
The present invention also provides a kind of fire fighting truck, and this fire fighting truck has above-mentioned telescopic arm.
Telescopic arm of the present invention had changed the mode that in the past telescopic oil cylinder is arranged on a joint arm inside; The substitute is at a joint arm and be connected, be used to drive the flexible telescopic oil cylinder of two joint arms with a joint arm and two joint arms with the outer setting of two joint arms; So just make operating personnel when telescopic oil cylinder being carried out dismounting, can both carry out, made things convenient for the carrying out of telescopic arm assembling and maintenance in the telescopic arm outside with maintenance.And, also make a joint arm inside obtain more space capable of using, help the increase of whole telescopic arm joint arm quantity, thus the maximum elongation length of expansion telescopic arm.
Description of drawings
Fig. 1 is the internal construction sketch map of telescopic arm in the prior art;
Fig. 2 is the front view of telescopic arm of the present invention;
Fig. 3 is the vertical view of telescopic arm of the present invention;
Fig. 4 be among Fig. 2 A to sectional drawing;
Fig. 5 be among Fig. 2 C to sectional drawing;
Fig. 6 be among Fig. 2 B to sectional drawing;
Fig. 7 be among Fig. 2 D to sectional drawing;
Fig. 8 is an I place enlarged drawing among Fig. 3.
The specific embodiment
Core of the present invention provides a kind of telescopic arm, the assembling of this telescopic arm and keep in repair conveniently, and a joint can hold more joint arm in the arm.Another core of the present invention provides a kind of fire fighting truck with above-mentioned telescopic arm.
In order to make those skilled in the art person understand the present invention program better, the present invention is done further detailed description below in conjunction with the accompanying drawing and the specific embodiment.
Please refer to the front view of a kind of specific embodiment of telescopic arm of the present invention shown in Figure 2.
As can be seen from Figure 2; In the specific embodiment of this kind telescopic arm; Telescopic arm comprises a joint arm 10 and two joint arms 30; Two joint arms 30 are slidably mounted in the joint arm 10, and also are provided with telescopic oil cylinder 50 in the outside of a joint arm 10 and two joint arms 30, and this telescopic oil cylinder 50 is connected with two joint arms 30 with a joint arm 10.Particularly, an end of telescopic oil cylinder 50 is connected on the joint arm 10, and the other end is connected on the two joint arms 30, when telescopic oil cylinder 50 stretches, just can drive two joint arms, 30 synchronization telescopes like this.
According to the specific embodiment shown in Fig. 2, the cylinder barrel 51 of telescopic oil cylinder 50 is connected on the joint arm 10, and the piston rod 53 of telescopic oil cylinder 50 is connected on the two joint arms 30.From the vertical view of the specific embodiment of telescopic arm shown in Figure 3, can find out; One joint arm 10 is provided with holder 11; This holder 11 can be welded on the joint arm 10; Also can use bolt that holder 11 is fixed on the joint arm 10, the cylinder barrel 51 of telescopic oil cylinder 50 is connected realization on the holder 11 with being connected through the cylinder barrel 51 with telescopic oil cylinder 50 of a joint arm 10.Particularly, can be with reference to the A of Fig. 2 shown in Figure 4 to sectional drawing, the cylinder barrel 51 of telescopic oil cylinder 50 is installed on the holder 11 through bolt 20.
Be installed to for 2 joint 30 last times of arms at piston rod 53 with telescopic oil cylinder 50; At first to make the piston rod 53 of telescopic oil cylinder 50 pass the arm head of a joint arm 10; As shown in Figure 5; On the arm head of a joint arm 10, be provided with the through hole 13 that the piston rod 53 that supplies telescopic oil cylinder 50 passes specially, the piston rod 53 of telescopic oil cylinder 50 through with obtained the effect that supports cooperating of through hole 13, the piston rod 53 of through hole 13 guiding telescopic oil cylinders 50 extends to two joint arms 30 along the axis direction of telescopic oil cylinder 50; And finally be connected on the two joint arms 30; Avoid in the telescopic process of piston rod 53 piston rod 53 bending to occur along with the increase of extension elongation, thereby make piston rod 53 depart from the axis direction of telescopic oil cylinder 50, cause 10 motions of two joint arms, 30 relative joint arms to have some setbacks.
For the further axial direction extension that guarantees the piston rod 53 of telescopic oil cylinder 50 along telescopic oil cylinder 50; Can on the arm head of a joint arm 10, guide strip 70 be set; The installation site of guide strip 70 can be installed in the side of the arm head of a joint arm 10 near the cylinder barrel 51 of telescopic oil cylinder 50 according to the mode shown in Fig. 2 and Fig. 3, also can be installed in the side of the arm head of a joint arm 10 near two joint arms 30 according to a kind of mode that does not illustrate in the drawings.Shown in Figure 6 for the piston rod 53 of telescopic oil cylinder 50 passes the sectional drawing of guide strip 70, guide strip 70 is installed in the arm head place of a joint arm 10 through bolt 20.
Will be connected with two joint arms 30 after the arm head of a joint arm 10 stretches out at the piston rod 53 of telescopic oil cylinder 50, the concrete syndeton that the piston rod 53 of telescopic oil cylinder 50 and two saves arms 30 can be with reference to figure 7 and Fig. 8.
As shown in Figure 7; Arm head place at two joint arms 30 is provided with groove 31; Be positioned at the both sides of arm head of two joint arms 30 according to this groove 31 of the embodiment shown in Fig. 7, stretch into immediately after the piston rod 53 of telescopic oil cylinder 50 stretches out from the arm head of a joint arm 10 in the groove 31 on two joint arms, 30 arm heads, use bolt 20 to be screwed into then from the side of piston rod 53; Piston rod 53 is fixed in the groove 31, and this also means that having accomplished telescopic oil cylinder 50 saves being connected of arms 30 with two simultaneously.
Because the piston rod 53 of telescopic oil cylinder 50 need pass the through hole 13 at a joint arm 10 arm head places; This just require assembling one joint arm 10 and two joints during arms 30 through hole 13 corresponding with the position of groove 31, could guarantee that like this piston rod 53 can be all the time moves along the axis direction of telescopic oil cylinder 50.In the embodiment that guide strip 70 is not set; Higher to through hole 13 and groove 31 in locational degree of correspondence; And the internal diameter of through hole 13 also will be provided with reference to the external diameter of piston rod 53; Needing piston rod 53 and through hole 13 is interference fits, can not occur excessive gap between the two, could guarantee effective support of 13 pairs of piston rods 53 of through hole like this.
Yet in the embodiment that is provided with guide strip 70; Guide strip 70 needs to form interference fits with piston rod 53; And the internal diameter of through hole 13 can be provided with more greatly, forms matched in clearance with piston rod 53, and guide strip 70 adopts dismountable connected mode to be installed on the arm head of a joint arm 10 simultaneously.When piston rod 53 is connected with the arm head of two joint arms 30; Make piston rod 53 pass guide strip 70 and through hole 13 earlier; Wouldn't be fixed on guide strip 70 on the arm head of a joint arm 10 this moment; Can not the cylinder barrel 51 of telescopic oil cylinder 50 be fixed on the holder 11, when treating that piston rod 53 stretches into the groove 31 on two joint arms, 30 arm heads, because through hole 13 is a matched in clearance with piston rod 53; And the cylinder barrel 51 of guide strip 70 and telescopic oil cylinder 50 does not all have fixing; So can also adjust this moment to the position of telescopic oil cylinder 50, make the axis of piston rod 53 whole telescopic oil cylinder 50 after passing through hole 13 to stretch into groove 31 be in parastate with the axis of a joint arm 10 and two joint arms 30, can make the steady and smooth crustal extension motion under the driving of telescopic oil cylinder 50 of two joint arms 30 like this.Position definite back control telescopic oil cylinder 50 of treating telescopic oil cylinder 50 is flexible repeatedly several times; If the piston rod 53 of telescopic oil cylinder 50 can stretch into groove 31 swimmingly and from groove 31, withdraw from equally swimmingly; The position that telescopic oil cylinder 50 is described has reached requirement; Just can be fixed on piston rod 53 in the groove 31 this moment, also can guide strip 70 be fixed on the arm head of a joint arm 10 simultaneously, and the cylinder barrel 51 of telescopic oil cylinder 50 also can be fixing with holder 11.
Through above-mentioned setting; The installation of telescopic oil cylinder 50 has had firm installation effect diametrically; In order to obtain firm installation effect in the axial direction equally; In a kind of specific embodiment shown in Figure 8, at the end setting baffle plate 90 that with the piston rod 53 of telescopic oil cylinder 50 be connected of groove 31 away from a joint arm 10, this baffle plate 90 is installed on the piston rod 53 through bolt 20; Axial arm head to two joint arms 30 along telescopic oil cylinder 50 applies a pressure, to improve telescopic oil cylinder 50 firm degree in the axial direction.
Telescopic arm of the present invention is when operation; Along with will driving two joint arms 30, stretching out of telescopic oil cylinder 50 from a joint arm 10, stretch out; Reach its range two joint arms 30 stop motions up to telescopic oil cylinder 50,, just need this moment two joint arms, 30 interior oil cylinders to continue to stretch out if the length of telescopic arm also is not enough to satisfy the operation needs at this moment; Linkage driving three joint arms through oil cylinder and leaf chain mechanism, four joint arms etc. stretch out from two joint arms 30, and the length of lengthening telescopic arm is to satisfy the operation needs.Because after telescopic oil cylinder 50 being arranged on a joint arm 10 outsides, a joint arm 10 inside have obtained bigger space capable of using, can utilize this part space of increase in a joint arm 10, to arrange more joint arm, the extension elongation of expansion telescopic arm.
More than the syndeton of telescopic oil cylinder 50 and a joint arm 10 and two joint arms 30 is illustrated, next, the top view illustration telescopic oil cylinder 50 that refers again to telescopic arm of the present invention shown in Figure 3 saves at a joint arm 10 and two and on the arms 30 quantity and position is set.
Embodiment shown in Figure 3 be a joint arm 10 and two save arms 30 upper surfaces bilateral symmetry two telescopic oil cylinders 50 are set; Such structural strength is better; And can make the flexible more steady of two joint arms 30, be more suitable for the bigger situation of telescopic arm volume and weight.In a kind of embodiment that does not illustrate in the drawings; Telescopic oil cylinder 50 can also medially be arranged on the upper surface of a joint arm 10 and two joint arms 30; This embodiment is primarily aimed at telescopic arm volume and the less situation of weight, and a telescopic oil cylinder 50 is enough to reach requirement, has practiced thrift cost.
Except above-mentioned telescopic arm, the present invention also provides a kind of fire fighting truck, and this fire fighting truck has above-mentioned telescopic arm.As for the syndeton of concrete structure and the telescopic arm and the fire fighting truck of fire fighting truck, the those of ordinary skill in this field can be known from prior art and know, repeats no more for this part content this paper that belongs to the prior art category.
More than telescopic arm provided by the present invention and the fire fighting truck with this telescopic arm have been carried out detailed introduction.Used concrete example among this paper principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (10)
1. telescopic arm comprises:
One joint arm (10);
Two joint arms (30) are slidably disposed in the said joint arm (10),
It is characterized in that with said two joint arm (30) outer setting the telescopic oil cylinder (50) that is connected with the two being arranged at a said joint arm (10), it is flexible that said telescopic oil cylinder (50) drives said two joint arms (30).
2. telescopic arm as claimed in claim 1 is characterized in that, the cylinder barrel (51) of said telescopic oil cylinder (50) is connected with a said joint arm (10), and the piston rod (53) of said telescopic oil cylinder (50) is connected with said two joint arms (30).
3. telescopic arm as claimed in claim 2 is characterized in that, a said joint arm (10) is provided with holder (11), and the cylinder barrel (51) of said telescopic oil cylinder (50) is installed on the said holder (11).
4. telescopic arm as claimed in claim 3 is characterized in that, is provided with groove (31) at the arm head place of said two joint arms (30), and the piston rod (53) of said telescopic oil cylinder (50) stretches in the said groove (31).
5. telescopic arm as claimed in claim 4 is characterized in that, is provided with through hole (13) at the arm head place of a said joint arm (10), and the piston rod (53) of said telescopic oil cylinder (50) passes said through hole (13) and stretches in the said groove (31).
6. telescopic arm as claimed in claim 5; It is characterized in that; On the arm head of a said joint arm (10), be connected with guide strip (70), the piston rod (53) of said telescopic oil cylinder (50) passes said guide strip (70) simultaneously and said through hole (13) stretches in the said groove (31).
7. telescopic arm as claimed in claim 6 is characterized in that, said groove (31) away from said one the joint arm (10) an end be provided with the baffle plate (90) that is connected with the piston rod (53) of said telescopic oil cylinder (50).
8. like each described telescopic arm in the claim 1 to 7, it is characterized in that said telescopic oil cylinder (50) is one, be arranged on the upper surface of a said joint arm (10) and said two joint arms (30) between two parties.
9. like each described telescopic arm in the claim 1 to 7, it is characterized in that said telescopic oil cylinder (50) is two, be symmetricly set on the both sides of a said joint arm (10) and said two joint arm (30) upper surfaces.
10. a fire fighting truck has telescopic arm, it is characterized in that, said telescopic arm is each described telescopic arm in the claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104450812A CN102518392A (en) | 2011-12-27 | 2011-12-27 | Telescopic arm and ambulance with telescopic arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104450812A CN102518392A (en) | 2011-12-27 | 2011-12-27 | Telescopic arm and ambulance with telescopic arm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102518392A true CN102518392A (en) | 2012-06-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104450812A Pending CN102518392A (en) | 2011-12-27 | 2011-12-27 | Telescopic arm and ambulance with telescopic arm |
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| Country | Link |
|---|---|
| CN (1) | CN102518392A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106955444A (en) * | 2017-04-28 | 2017-07-18 | 三汽车制造有限公司 | Fire fighting truck |
| CN113752769A (en) * | 2021-08-20 | 2021-12-07 | 中国北方车辆研究所 | Telescopic arm device for vehicle obstacle crossing |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE9407224U1 (en) * | 1994-04-27 | 1994-10-20 | Lauer, Oskar Viktor, 64759 Sensbachtal | Device for attaching another telescopic cylinder to the 2nd telescopic extension of a truck assembly crane by 2 further telescopic extensions hydr. from u. retract |
| US5678708A (en) * | 1993-04-26 | 1997-10-21 | Hiab Ab | Extendible crane boom |
| KR20060079691A (en) * | 2005-01-03 | 2006-07-06 | 주식회사 세인이엔지 | Telescopic boom of an aerial lift |
| CN201317633Y (en) * | 2008-12-17 | 2009-09-30 | 三角轮胎股份有限公司 | Special-purpose electric vehicle for loading and unloading tire molding drum |
| CN202023774U (en) * | 2010-07-27 | 2011-11-02 | 徐州重型机械有限公司 | Elevating platform fire truck |
| CN202409905U (en) * | 2011-12-27 | 2012-09-05 | 徐州重型机械有限公司 | Telescopic arm and fire truck with the same |
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2011
- 2011-12-27 CN CN2011104450812A patent/CN102518392A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5678708A (en) * | 1993-04-26 | 1997-10-21 | Hiab Ab | Extendible crane boom |
| DE9407224U1 (en) * | 1994-04-27 | 1994-10-20 | Lauer, Oskar Viktor, 64759 Sensbachtal | Device for attaching another telescopic cylinder to the 2nd telescopic extension of a truck assembly crane by 2 further telescopic extensions hydr. from u. retract |
| KR20060079691A (en) * | 2005-01-03 | 2006-07-06 | 주식회사 세인이엔지 | Telescopic boom of an aerial lift |
| CN201317633Y (en) * | 2008-12-17 | 2009-09-30 | 三角轮胎股份有限公司 | Special-purpose electric vehicle for loading and unloading tire molding drum |
| CN202023774U (en) * | 2010-07-27 | 2011-11-02 | 徐州重型机械有限公司 | Elevating platform fire truck |
| CN202409905U (en) * | 2011-12-27 | 2012-09-05 | 徐州重型机械有限公司 | Telescopic arm and fire truck with the same |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106955444A (en) * | 2017-04-28 | 2017-07-18 | 三汽车制造有限公司 | Fire fighting truck |
| CN106955444B (en) * | 2017-04-28 | 2022-04-29 | 三一汽车制造有限公司 | Fire engine |
| CN113752769A (en) * | 2021-08-20 | 2021-12-07 | 中国北方车辆研究所 | Telescopic arm device for vehicle obstacle crossing |
| CN113752769B (en) * | 2021-08-20 | 2024-05-31 | 中国北方车辆研究所 | Telescopic arm device for obstacle surmounting of vehicle |
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Application publication date: 20120627 |