CN203525176U - Arm head connecting device of telescopic boom, telescopic boom for fire fighting truck, and fire fighting truck - Google Patents
Arm head connecting device of telescopic boom, telescopic boom for fire fighting truck, and fire fighting truck Download PDFInfo
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- CN203525176U CN203525176U CN201320627368.1U CN201320627368U CN203525176U CN 203525176 U CN203525176 U CN 203525176U CN 201320627368 U CN201320627368 U CN 201320627368U CN 203525176 U CN203525176 U CN 203525176U
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- rotating shaft
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Abstract
The utility model relates to the technical field of engineering machinery, and discloses an arm head connecting device of a telescopic boom, the telescopic boom for a fire fighting truck, and the fire fighting truck, which are used for solving the problems in the prior art that the gap of an arm cylinder is difficult to adjust and the friction force is high. The arm head connecting device of the telescopic boom comprises a connecting part, a wheel body and a rotating shaft position adjusting device, wherein the wheel body pushes against an inner segment arm of the telescopic boom, and the wheel body is pivoted to the connecting part by a rotating shaft; the rotating shaft position adjusting mechanism is arranged on the connecting part or is arranged between the connecting part and an outer segment arm of the telescopic boom; the rotating shaft position adjusting mechanism can drive the rotating shaft to move towards the inner segment arm. Due to the adoption of the arm head connecting device of the telescopic boom, the gap between the inner segment arm and the outer segment arm can be adjusted.
Description
Technical field
The utility model relates to technical field of engineering machinery, is specifically related to a kind of telescopic arm arm head jockey, for telescopic arm and the fire fighting truck of fire fighting truck.
Background technology
Elevating fire truck is a kind of important engineering mechanical device.Elevating fire truck refers to have chassis special, and the telescopic arm support that lifting is used is installed, and has professional operating personnel to operate fire fighter can be transported to certain altitude and to realize height rescue or the fire-fighting vehicle of fire-fighting operation.Telescopic arm support, or be called " telescopic arm " is to be changed length and had the abbreviation of the jib of certain load ability by telescopic oil cylinder and telescoping mechanism.Telescopic arm is the main bearing carrier of fire fighting truck, is one of major embodiment of car load height and function.Telescopic arm is nested the forming of more piece box-shaped arm, provides power to realize stretch out and bounce back by oil cylinder and leaf chain.
Referring to Fig. 1, in the fire fighting truck of telescopic arm structure, realizing the rubbing device of linkage function and flexible smooth-going function between adjacent two joint telescopic arms is slide block, and slide block can be divided into nylon slide block 14 and two kinds of versions of idler structure.Wherein, between nylon slide block 14 and telescopic arm, be sliding friction, between idler structure and telescopic arm, be rolling friction.
In the assembling and telescopic process of telescopic arm, due to telescopic arm cylindrical shell size foozle, if adopt nylon slide block 14, the slide block of often need to planing just can reach assembling object.Referring to Fig. 1, between acromere arm 1 and internal segment arm 2, adopt the nylon slide block 14 of up-down structure, in assembling process, by planing nylon slide block 14, adjust upper and lower gap.
In prior art, also have the upside of acromere arm 1 and the upside of internal segment arm 2 to adopt nylon slide block 14, the situation that the downside of the downside of acromere arm 1 and internal segment arm 2 adopts idler structure, realizes the effect of the kinematic pair between telescopic arm with this.Idler structure belongs to rolling friction, can effectively reduce frictional force, thereby be the main selection selection of high rice number fire fighting truck kinematic pair, but idler structure hardness after surface treatment is very large, in assembling process, once there is improper just very difficult adjustment the in the gap of arm cylinder, the loss that even causes arm cylinder or carrying roller to scrap.
As from the foregoing, at least there is following problems in prior art:
1, existing nylon slide block structure, owing to adopting slide block and steel friction, frictional force is larger, the flexible irregularity of telescopic arm.
2, current idler structure is not adjusted the function in upper and lower gap, has a strong impact on to assembling and flexible causing, and often causes scrapping of arm cylinder or carrying roller.
3, existing idler structure, can not realize adjusting, and fit tolerance requirement is strict, assembles up difficulty, not easy to operate.
Utility model content
One of them object of the present utility model be a kind of telescopic arm arm head jockey is proposed, for telescopic arm and the fire fighting truck of fire fighting truck, solved the gap of arm cylinder in prior art and be difficult to the large problem of frictional force of adjusting and adopting nylon slide block structure to cause.
Many technique effects that the utility model optimal technical scheme can produce will describe in detail later.
For achieving the above object, the utility model provides following technical scheme:
The utility model provides a kind of telescopic arm arm head jockey, comprises attaching parts, wheel body and rotating shaft position governor motion, wherein:
Described wheel body is supported on the internal segment arm of telescopic arm, and described wheel body is articulated in described attaching parts by rotating shaft;
Described rotating shaft position governor motion is arranged in described attaching parts or is arranged between the acromere arm of described attaching parts and described telescopic arm; Described rotating shaft position governor motion can drive described rotating shaft to move towards the direction that approaches described internal segment arm.
In preferred or optional embodiment, described attaching parts are fixed on described acromere arm, described attaching parts are fixed block, described wheel body is running roller, described rotating shaft position governor motion comprises to be adjusted screw rod and is arranged at the screw on described fixed block, wherein: on described fixed block, offer groove and be positioned at two adjusting holes on described groove two side, two described adjusting holes are all connected with described groove; Described running roller is arranged in described groove, and described running roller middle part is equipped with described rotating shaft, and the two ends of described rotating shaft are run through respectively in two described adjusting holes, and the size of described adjusting hole in the direction that approaches described internal segment arm is greater than the external diameter of described rotating shaft;
External screw thread in the stem portion of described adjustment screw rod matches with the internal thread of described screw, and one end that the stem portion of described adjustment screw rod is stretched out described screw is connected in described rotating shaft;
The stem portion of described adjustment screw rod can promote described rotating shaft with respect to stem portion described in described screw rotation process and move towards the direction that approaches described internal segment arm.
In preferred or optional embodiment, described adjusting hole is slotted hole.
In preferred or optional embodiment, the quantity of described screw is two pairs, and two described screws of every centering are oppositely arranged and run through respectively same described adjusting hole;
Described in each, in screw, be provided with a described adjustment screw rod, two described rotating shafts of the common contact of described adjustment screw rod.
In preferred or optional embodiment, described attaching parts are bent plate, and described wheel body is support wheel;
Described support wheel is articulated in by described rotating shaft on one end of described bent plate, and the other end of described bent plate and described acromere arm or the structural member being fixedly connected with described acromere arm are flexibly connected;
Described rotating shaft position governor motion comprises to be adjusted bolt and is arranged at described acromere arm or is arranged at the screwed hole on the structural member being fixedly connected with described acromere arm, wherein:
External screw thread in the stem portion of described adjustment bolt matches with the internal thread of described screwed hole, and one end that the stem portion of described adjustment bolt is stretched out described screwed hole is connected on described bent plate;
The stem portion of described adjustment bolt can promote described bent plate with respect to stem portion described in described screwed hole rotation process and rotate towards the direction that approaches described internal segment arm.
In preferred or optional embodiment, the quantity of described bent plate, described support wheel and described rotating shaft position governor motion is all two, one end of two described bent plates by same described rotating shaft respectively with a described support wheel pivot joint.
In preferred or optional embodiment, in the stem portion of described adjustment bolt, elastomer is installed;
Described elastomer connects with described attaching parts and described acromere arm respectively, or described elastomer connects with described attaching parts and the structural member that is fixedly connected with described acromere arm respectively.
In preferred or optional embodiment, described elastomer is the spring being set in the stem portion of described adjustment bolt;
Two ends on described spring axial direction connect with described attaching parts and described acromere arm respectively, or the two ends on described spring axial direction connect with described attaching parts and the structural member that is fixedly connected with described acromere arm respectively.
The utility model also provides a kind of telescopic arm for fire fighting truck, comprises acromere arm and internal segment arm, wherein, also comprises the telescopic arm arm head jockey that the arbitrary technical scheme of the utility model provides.
The utility model provides a kind of fire fighting truck again, comprises the telescopic arm for fire fighting truck that the arbitrary technical scheme of the utility model provides.
Based on technique scheme, the utility model embodiment at least can produce following technique effect: above-mentioned telescopic arm arm head jockey, there is attaching parts, rotating shaft, wheel body and rotating shaft position governor motion, between wheel body and internal segment arm, be rolling friction, can effectively reduce the frictional force in telescopic arm telescopic process.Rotating shaft position governor motion can be adjusted the position of rotating shaft, due to wheel body and rotating shaft pivot joint, the change of rotating shaft position can driven wheel body position change, and then realize the object of adjusting gap between internal segment arm and acromere arm, thereby guarantee flexible ride comfort and the fine motion between internal segment arm and acromere arm.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, forms the application's a part, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the annexation schematic diagram between internal segment arm and acromere arm on telescopic arm in prior art;
The telescopic arm arm head jockey that Fig. 2 provides for the utility model embodiment and the annexation perspective view between internal segment arm and acromere arm;
The telescopic arm arm head jockey that Fig. 3 provides for the utility model embodiment and the annexation master between internal segment arm and acromere arm look schematic diagram;
The telescopic arm arm head jockey that Fig. 4 provides for the utility model embodiment and the annexation schematic top plan view between internal segment arm and acromere arm;
Schematic diagram is looked on the telescopic arm arm head jockey that Fig. 5 provides for the utility model embodiment and the annexation right side between internal segment arm and acromere arm;
The telescopic arm arm head jockey that Fig. 6 provides for the utility model embodiment is arranged on the local enlarged diagram of acromere arm upside and side;
The telescopic arm arm head jockey that Fig. 7 provides for the utility model embodiment is arranged on the local enlarged diagram of acromere arm downside;
The telescopic arm arm head jockey that Fig. 8 provides for the utility model embodiment is arranged on the partial schematic sectional view of acromere arm downside;
Reference numeral: 1, acromere arm; 2, internal segment arm; 3, fixed block; 4, adjust screw rod; 5, running roller; 6, rotating shaft; 7, fixed axis; 8, bent plate; 9, adjust bolt; 10, screw; 11, adjusting hole; 12, support wheel; 13, screwed hole; 14, nylon slide block; 15, backstop.
The specific embodiment
Can understand the distinctive points between content of the present utility model and the utility model and prior art with reference to accompanying drawing Fig. 1～Fig. 8 and word content below.Below, by accompanying drawing and the mode of enumerating optional embodiment more of the present utility model, the technical solution of the utility model (comprising optimal technical scheme) is described in further detail.It should be noted that: any technical characterictic in the present embodiment, any technical scheme is all the technical characterictic of plurality of optional or one or more in optional technical scheme, cannot exhaustive all alternative technical characterictics of the present utility model and alternative technical scheme in order to describe succinct need in presents, also the embodiment that is not easy to each technical characterictic all emphasizes that it is one of optional numerous embodiments, so those skilled in the art should know: any technical characterictic in the present embodiment and any technical scheme all do not limit protection domain of the present utility model, protection domain of the present utility model should comprise that those skilled in the art do not pay the thinkable any alternate embodiments of creative work.
Technical scheme the utility model being provided below in conjunction with Fig. 2～Fig. 8 is carried out more detailed elaboration, and arbitrary technological means that the utility model is provided is replaced or any two or more technological means that the utility model is provided or technical characterictic combine mutually and the technical scheme that obtains all should be within protection domain of the present utility model.
As shown in Fig. 2～Fig. 8, the utility model embodiment provides a kind of telescopic arm arm head jockey, comprise attaching parts, wheel body and rotating shaft position governor motion, wherein: wheel body is supported on the internal segment arm 2 of telescopic arm, and wheel body is articulated in attaching parts by rotating shaft 6; Rotating shaft position governor motion be arranged in attaching parts or be arranged on attaching parts and the acromere arm 1 of telescopic arm between; Rotating shaft position governor motion can drive rotating shaft 6 to move towards the direction that approaches internal segment arm 2.
Fire fighting truck has telescopic arm, and telescopic arm comprises interconnective internal segment arm 2 and acromere arm 1, and internal segment arm 2 and acromere arm 1 are all box-shaped arm.Between internal segment arm 2 and acromere arm 1, there is gap, and both can relative sliding.Particularly, there is following direction in the gap between internal segment arm 2 and acromere arm 1: upper side clearance, underside gap, side clearance (specifically comprising gap, left side and gap, right side).The telescopic arm arm head jockey that the utility model embodiment provides is for adjusting the gap on above-mentioned any direction between internal segment arm 2 and acromere arm 1.If above-mentioned telescopic arm arm head jockey is all set in multiple directions, the corresponding gap that also just can realize in adjustment multiple directions.
Attaching parts can have various structures form, such as frame structure, platy structure or block structure.The mode that rotating shaft position governor motion is adjusted rotating shaft 6 positions has two kinds, and a kind of is that the position of rotating shaft 6 in attaching parts changed, thereby drives wheel body to approach or away from internal segment arm 2; Another kind is that the position of attaching parts is changed, thereby drives wheel body to approach or away from internal segment arm 2.Hereinafter will provide two kinds of preferred implementations to describe this two kinds of modes in detail.
The telescopic arm arm head jockey that technique scheme provides, adopt wheel body to support internal segment arm 2, when the gap between internal segment arm 2 and acromere arm 1 need to be adjusted, can regulate by rotating shaft position governor motion the position of wheel body, with make it near or away from internal segment arm 2, and then realize the object of adjusting gap between internal segment arm 2 and acromere arm 1, thereby guarantee flexible ride comfort and the fine motion between internal segment arm 2 and acromere arm 1.And, between wheel body and internal segment arm 2, be rolling friction, can effectively reduce the frictional force in telescopic arm telescopic process.
Introduce in detail rotating shaft position governor motion below and adjust the first kind of way of rotating shaft 6 positions: the position of rotating shaft 6 in attaching parts changed, thereby drive wheel body to approach or away from internal segment arm 2.
Referring to Fig. 6, attaching parts are fixed on acromere arm 1, and attaching parts are preferably fixed block 3, and wheel body is preferably running roller 5, and rotating shaft position governor motion specifically comprises to be adjusted screw rod 4 and is arranged at the screw 10 on fixed block 3.Fixed block 3 is welded on acromere arm 1.Wherein: on fixed block 3, offer groove and 11, two adjusting holes 11 of two adjusting holes of being positioned on groove two side are all connected with groove; Running roller 5 is arranged in groove, and running roller 5 middle parts are equipped with rotating shaft 6, and the two ends of rotating shaft 6 are run through respectively in two adjusting holes 11, and the size of adjusting hole 11 in the direction that approaches internal segment arm 2 is greater than the external diameter of rotating shaft 6.The external screw thread of adjusting in the stem portion of screw rod 4 matches with the internal thread of screw 10, and one end that the stem portion of adjustment screw rod 4 is stretched out screw 10 is connected in rotating shaft 6.Adjust the stem portion of screw rod 4 with respect in screw 10 rotation processes, the stem portion of adjusting screw rod 4 can promote rotating shaft 6 and move towards the direction that approaches internal segment arm 2.If screw rod 4 is adjusted in reverse rotation, rotating shaft 6 can be moved towards the direction away from internal segment arm 2.Adjusting hole 11 is specially slotted hole.The change of rotating shaft 6 position in slotted hole can drive the change of distance between running roller 5 and internal segment arm 2, namely realized the size of adjusting gap between acromere arm 1 and internal segment arm 2, and then assurance acromere arm 1 in running, keep capable of regulating to contact with internal segment arm 2, realize the ride comfort of semi-girder running.
Adopt the telescopic arm arm head jockey of technique scheme to can be used for regulating the gap of any direction between internal segment arm 2 and acromere arm 1, preferably adjust the gap of upside and side between internal segment arm 2 and acromere arm 1.
As from the foregoing, the stem portion of adjusting screw rod 4 can promote rotating shaft 6 with respect to stem portion in screw 10 rotation processes and move towards the direction that approaches internal segment arm 2, the stem portion of adjusting so screw rod 4 rotates backward with respect to screw 10, just can make rotating shaft 6 away from internal segment arm 2.This means, adopt technique scheme, can not only reduce the gap between internal segment arm 2 and acromere arm 1, can also increase the gap between internal segment arm 2 and acromere arm 1.
Preferably adopt the fixing above-mentioned rotating shaft 6 of following manner: the quantity of screw 10 is two pairs, two screws 10 of every centering are oppositely arranged and run through respectively same adjusting hole 11; In each screw 10, be provided with one and adjust the common contact rotating shaft 6 of 4, two adjustment screw rods 4 of screw rod.That is to say, every one end of rotating shaft 6 all adopts two adjustment screw rods 4 to realize its relative position in adjusting hole 11, and realization is adjusted and move unobstructed.
Introduce in detail rotating shaft position governor motion below and adjust the second way of rotating shaft 6 positions: the position of attaching parts is changed, thereby drive wheel body to approach internal segment arm 2.
Referring to Fig. 7 and Fig. 8, attaching parts are preferably bent plate 8, and wheel body is preferably support wheel 12; Support wheel 12 is articulated in by rotating shaft 6 on one end of bent plate 8, and the other end of bent plate 8 and acromere arm 1 or the structural member being fixedly connected with acromere arm 1 are flexibly connected (be specially by fixed axis 7 and realize pivot joint) herein; Rotating shaft position governor motion comprises to be adjusted bolt 9 and is arranged at acromere arm 1 or is arranged at the screwed hole 13 on the structural member being fixedly connected with acromere arm 1, wherein: the external screw thread of adjusting in the stem portion of bolt 9 matches with the internal thread of screwed hole 13, and the stem portion of adjustment bolt 9 one end of stretching out screwed hole 13 be connected on bent plate 8; The stem portion of adjusting bolt 9 can promote bent plate 8 with respect to stem portion in screwed hole 13 rotation processes and rotate towards the direction that approaches internal segment arm 2.The stem portion of adjusting bolt 9 preferably withstands on the bending place of bent plate 8.Adjust the below that bolt 9 is positioned at fixed axis 7, by screwing or screwing out, adjust bolt 9, bent plate 8 is rotated around fixed axis 7, so make to be arranged on the rotating shaft 6 of bent plate 8 ends and support wheel 12 near or away from internal segment arm 2.Above-mentioned implementation, drives bent plate 8 by adjusting bolt 9, realizes the object that support wheel 12 is adjusted up and down, thereby realizes the ride comfort of semi-girder telescopic process.
The telescopic arm arm head jockey of employing technique scheme can be used for regulating the gap of any direction between acromere arm 1 and internal segment arm 2, preferably adjusts the gap of downside between acromere arm 1 and internal segment arm 2.
Referring to Fig. 5 and Fig. 7, herein, the quantity of bent plate 8, support wheel 12 and rotating shaft position governor motion is all two, one end of two bent plates 8 by same rotating shaft 6 respectively with support wheel 12 pivot joints.The installation that can simplify telescopic arm arm head jockey is so set.The part that rotating shaft 6 is positioned at two bent plate 8 outsides is provided with backstop 15, in case spline axle 6 comes off, backstop 15 is specially bearing pin herein.Support wheel 12 and above-mentioned running roller 5 can adopt same structure.
For realizing flexible contact, avoid sending the problems such as the sound, shake, in the stem portion of adjustment bolt 9, elastomer is installed; Elastomer connects with bent plate 8 and acromere arm 1 respectively, or elastomer connects with bent plate 8 and the structural member that is fixedly connected with acromere arm 1 respectively.Elastomer is such as being rubber blanket etc.
Elastomer is preferably the spring being set in the stem portion of adjusting bolt 9; Two ends on spring axial direction connect with bent plate 8 and acromere arm 1 respectively, or the two ends on spring axial direction connect with bent plate 8 and the structural member that is fixedly connected with acromere arm 1 respectively.Above-mentioned two kinds of modes can realize Elastic Contact, to reduce the sound and jitter problem.
The telescopic arm arm head jockey that technique scheme provides, can realize the kinematic pair setting of complete rolling between telescopic arm, has realized the dynamic process between adjacent expansion arm, has solved semi-girder because of the manufacture overproof reason shake causing and a difficult problem of making sound.Above-mentioned telescopic arm arm head jockey, can be applied to fire fighting truck or have the equipment of similar structures.For lower rice number, the less vehicle of overlap joint counter-force, uses above-mentioned telescopic arm arm head jockey, can make flexible ride comfort and fine motion between acromere arm 1 and internal segment arm 2 be highly improved.
The utility model embodiment also provides a kind of telescopic arm for fire fighting truck, comprises acromere arm 1 and internal segment arm 2, and it also comprises the telescopic arm arm head jockey that the arbitrary technical scheme of the utility model provides.
Shown in Figure 2, the top of acromere arm 1 and internal segment arm 2 upsides and side is respectively provided with the telescopic arm arm head jockey (referring to Fig. 6) of the above-mentioned the first implementation of two covers, downside is provided with the telescopic arm arm head jockey (referring to Fig. 7 and Fig. 8) of the above-mentioned the second implementation of two covers, and bent plate 8 and support wheel 12 on two telescopic arm arm head jockeys of this of downside have been linked to be one by same rotating shaft 6.The gap of upside, downside and side capable of regulating all between acromere arm 1 and internal segment arm 2, to solve irregularity flexible in assembling and semi-girder running and a shake difficult problem.
The telescopic arm for fire fighting truck that technique scheme provides, when design floating structure, the opening of employing and elasticity connect the kinematic pair problem between adjacent two joint arms in telescopic process that solves, and have solved the flexible smooth-going problem of telescopic arm.
The utility model embodiment provides a kind of fire fighting truck again, and it comprises the telescopic arm for fire fighting truck that the arbitrary technical scheme of the utility model provides.
The fire fighting truck that technique scheme provides, can adjust the gap between internal segment arm and acromere arm, and can reduce the frictional resistance of telescopic arm when flexible.
Above-mentioned arbitrary technical scheme disclosed in the utility model unless otherwise stated, if it discloses number range, so disclosed number range is preferred number range, any it should be appreciated by those skilled in the art: preferred number range is only the obvious or representative numerical value of technique effect in many enforceable numerical value.Because numerical value is more, cannot be exhaustive, so the utility model just discloses part numerical value to illustrate the technical solution of the utility model, and the above-mentioned numerical value of enumerating should not form the restriction of the utility model being created to protection domain.
If used the words such as " first ", " second " to limit parts herein, those skilled in the art should know: the use of " first ", " second " is only used to be convenient to describe above parts are distinguished as not having outside Stated otherwise, and above-mentioned word does not have special implication.
Simultaneously, if above-mentioned the utility model discloses or has related to parts or the structural member of connection fastened to each other, so, unless otherwise stated, be fixedly connected with and can be understood as: can dismantle and be fixedly connected with (for example using bolt or screw to connect), also can be understood as: non-removable being fixedly connected with (for example rivet, weld), certainly, connection fastened to each other also can for example, be replaced (obviously cannot adopt except integrally formed technique) by integral type structure (use casting technique is integrally formed to be created).
In addition, in the disclosed arbitrary technical scheme of above-mentioned the utility model applied for the term that represents position relationship or shape unless otherwise stated its implication comprise and its approximate, similar or approaching state or shape.Arbitrary parts that the utility model provides can be both to be assembled by a plurality of independent parts, the produced separate part of the technique that also can be one of the forming.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; Although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the field are to be understood that: still can modify or part technical characterictic is equal to replacement the specific embodiment of the present utility model; And not departing from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technical scheme scope that the utility model asks for protection.
Claims (10)
1. a telescopic arm arm head jockey, is characterized in that, comprises attaching parts, wheel body and rotating shaft position governor motion, wherein:
Described wheel body is supported on the internal segment arm of telescopic arm, and described wheel body is articulated in described attaching parts by rotating shaft;
Described rotating shaft position governor motion is arranged in described attaching parts or is arranged between the acromere arm of described attaching parts and described telescopic arm; Described rotating shaft position governor motion can drive described rotating shaft to move towards the direction that approaches described internal segment arm.
2. telescopic arm arm head jockey according to claim 1, it is characterized in that: described attaching parts are fixed on described acromere arm, described attaching parts are fixed block, described wheel body is running roller, described rotating shaft position governor motion comprises to be adjusted screw rod and is arranged at the screw on described fixed block, wherein: on described fixed block, offer groove and be positioned at two adjusting holes on described groove two side, two described adjusting holes are all connected with described groove; Described running roller is arranged in described groove, and described running roller middle part is equipped with described rotating shaft, and the two ends of described rotating shaft are run through respectively in two described adjusting holes, and the size of described adjusting hole in the direction that approaches described internal segment arm is greater than the external diameter of described rotating shaft;
External screw thread in the stem portion of described adjustment screw rod matches with the internal thread of described screw, and one end that the stem portion of described adjustment screw rod is stretched out described screw is connected in described rotating shaft;
The stem portion of described adjustment screw rod can promote described rotating shaft with respect to stem portion described in described screw rotation process and move towards the direction that approaches described internal segment arm.
3. telescopic arm arm head jockey according to claim 2, is characterized in that, described adjusting hole is slotted hole.
4. telescopic arm arm head jockey according to claim 2, is characterized in that, the quantity of described screw is two pairs, and two described screws of every centering are oppositely arranged and run through respectively same described adjusting hole;
Described in each, in screw, be provided with a described adjustment screw rod, two described rotating shafts of the common contact of described adjustment screw rod.
5. telescopic arm arm head jockey according to claim 1, is characterized in that, described attaching parts are bent plate, and described wheel body is support wheel;
Described support wheel is articulated in by described rotating shaft on one end of described bent plate, and the other end of described bent plate and described acromere arm or the structural member being fixedly connected with described acromere arm are flexibly connected;
Described rotating shaft position governor motion comprises to be adjusted bolt and is arranged at described acromere arm or is arranged at the screwed hole on the structural member being fixedly connected with described acromere arm, wherein:
External screw thread in the stem portion of described adjustment bolt matches with the internal thread of described screwed hole, and one end that the stem portion of described adjustment bolt is stretched out described screwed hole is connected on described bent plate;
The stem portion of described adjustment bolt can promote described bent plate with respect to stem portion described in described screwed hole rotation process and rotate towards the direction that approaches described internal segment arm.
6. telescopic arm arm head jockey according to claim 5, it is characterized in that, the quantity of described bent plate, described support wheel and described rotating shaft position governor motion is all two, one end of two described bent plates by same described rotating shaft respectively with a described support wheel pivot joint.
7. telescopic arm arm head jockey according to claim 5, is characterized in that, in the stem portion of described adjustment bolt, elastomer is installed;
Described elastomer connects with described attaching parts and described acromere arm respectively, or described elastomer connects with described attaching parts and the structural member that is fixedly connected with described acromere arm respectively.
8. telescopic arm arm head jockey according to claim 7, is characterized in that,
Described elastomer is the spring being set in the stem portion of described adjustment bolt;
Two ends on described spring axial direction connect with described attaching parts and described acromere arm respectively, or the two ends on described spring axial direction connect with described attaching parts and the structural member that is fixedly connected with described acromere arm respectively.
9. for a telescopic arm for fire fighting truck, comprise acromere arm and internal segment arm, it is characterized in that, also comprise the arbitrary described telescopic arm arm head jockey of claim 1-8.
10. a fire fighting truck, is characterized in that, comprises the telescopic arm for fire fighting truck claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320627368.1U CN203525176U (en) | 2013-10-11 | 2013-10-11 | Arm head connecting device of telescopic boom, telescopic boom for fire fighting truck, and fire fighting truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320627368.1U CN203525176U (en) | 2013-10-11 | 2013-10-11 | Arm head connecting device of telescopic boom, telescopic boom for fire fighting truck, and fire fighting truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203525176U true CN203525176U (en) | 2014-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320627368.1U Withdrawn - After Issue CN203525176U (en) | 2013-10-11 | 2013-10-11 | Arm head connecting device of telescopic boom, telescopic boom for fire fighting truck, and fire fighting truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203525176U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103495267A (en) * | 2013-10-11 | 2014-01-08 | 徐州重型机械有限公司 | Arm head connection device of telescopic arm, telescopic arm for fire fighting truck and fire fighting truck |
| CN110512544A (en) * | 2019-09-19 | 2019-11-29 | 武汉比邻科技发展有限公司 | Scalable height limiter is adjusted in one kind |
-
2013
- 2013-10-11 CN CN201320627368.1U patent/CN203525176U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103495267A (en) * | 2013-10-11 | 2014-01-08 | 徐州重型机械有限公司 | Arm head connection device of telescopic arm, telescopic arm for fire fighting truck and fire fighting truck |
| CN103495267B (en) * | 2013-10-11 | 2015-12-16 | 徐州重型机械有限公司 | Telescopic arm arm head jockey, for the telescopic arm of fire fighting truck and fire fighting truck |
| CN110512544A (en) * | 2019-09-19 | 2019-11-29 | 武汉比邻科技发展有限公司 | Scalable height limiter is adjusted in one kind |
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