CN206142769U - Flexible drive assembly and aerial working platform - Google Patents

Abstract

The utility model relates to an engineering machine tool field especially relates to a flexible drive assembly and aerial working platform. Flexible drive assembly includes basic arm, two sections arms, three section arm, flexible hydro -cylinder, stretches the rope chain and reaches back the rope chain, flexible hydro -cylinder includes cylinder and telescopic link, the telescopic link stretch out the end rigid coupling in on the basic arm, the cylinder rigid coupling in sections two, on the arms, first sprocket has set firmly on the flexible hydro -cylinder, sections two, the second sprocket has still set firmly on the arms, the second sprocket for first sprocket more be close to in be convenient for on the cylinder the telescopic link stretches out stretches out the end, the one end rigid coupling of retractable sprocket -type strip in on the basic arm, the other end is walked around first sprocket rigid coupling in on the three section arm, the one end rigid coupling that returns the rope chain in on the three section arm, the other end is walked around second sprocket rigid coupling in on the basic arm. The utility model discloses not only have better transmission performance, and have the accurate nature of higher stability, security and transmission.

Description

Flexible transmission component and aerial work platform

【Technical field】

This utility model is related to engineering machinery field, more particularly to a kind of flexible transmission component and aerial work platform.

【Background technology】

Aerial work platform is a kind of advanced aerial operation machine, can greatly improve the work effect of aerial workmen Rate, safety and comfortableness, and labor intensity is reduced, early have been widely used in developed country.China aerial work platform makes With also more and more extensively, such as initial general municipal road lamp is keeped in repair, garden tree pruning, and it is fast with China's economy Speed development, engineering construction, industrial installation, overhaul of the equipments, Factory Building maintenance, shipbuilding, electric power, municipal administration, airport, communication, gardens, traffic Constantly increase Deng the demand to aerial work platform.

At present the telescopic arm of many aerial work platforms implements expanding-contracting action using the traction and gearing of steel wire rope , the stretcher strain that its steel wire rope is produced in distraction procedure is larger so that transmission is inaccurate and unstable, and adopts steel wire Rope causes wire cable rupture implementing expanding-contracting action, easily in overload, so to the operating personnel on aerial work platform and The personnel of periphery produce dangerous.

【Utility model content】

The purpose of this utility model aims to solve the problem that the problems referred to above, there is provided a kind of flexible transmission component and work high above the ground are flat Platform, it can provide accurate telescopic arm expanding-contracting action, and with higher safety.

To realize the purpose, this utility model provides a kind of flexible transmission component, including basic arm, is socketed on the base In this arm and can stretch out from the basic arm two joint arms, be socketed in two joint arm and can be from two joint arm Three joint arms that external part stretches out, telescopic oil cylinder, stretch rope chain bar and return rope chain bar；The telescopic oil cylinder includes cylinder barrel and is socketed on institute The expansion link in cylinder barrel is stated, the external part of the expansion link is fixed on the basic arm, and the cylinder barrel is fixed in two section On arm；The first sprocket wheel is installed with the telescopic oil cylinder, the second sprocket wheel, the second sprocket wheel phase are fixedly provided with two joint arm For the first sprocket wheel is closer on the cylinder barrel external part of being easy to the expansion link to stretch out；One end of the stretching chain is consolidated It is connected on the basic arm, the other end bypasses first sprocket wheel and is fixed in the three joint arms；One end of described time rope chain bar It is fixed in the three joint arms, the other end bypasses second sprocket wheel and is fixed on the basic arm.

Preferably, be provided with the external part of the expansion link on the cylinder barrel being easy to the cylinder barrel to be fixed on described two Connecting portion in joint arm.

Preferably, first sprocket wheel on the telescopic oil cylinder in the external part away from one end oil At cylinder head, second sprocket wheel is in two joint arm at the external part of the expansion link.

Further, described time rope chain bar is fixed in the three joint arms with rope chain bar is stretched by chain connector, described The one end for returning rope chain bar is respectively and fixedly connected with the both sides of the chain connector with the one end for stretching rope chain bar.

Further, the rope chain bar of stretching is provided with chain detection apparatus.

Further, the Inner Constitution telescopic cavity of the basic arm, two joint arms and three joint arms, the telescopic oil cylinder, first Sprocket wheel, the second sprocket wheel, stretch rope chain bar and return rope chain bar all in the telescopic cavity.

Accordingly, this utility model additionally provides a kind of aerial work platform, including car body, operating board and any of the above-described skill Flexible transmission component described in art scheme, the three joint arms of the flexible transmission component are connected with operating board, the flexible transmission group The basic arm of part is connected with car body.

Preferably, the three joint arms are hinged with operating board, the basic arm is hinged with car body.

Further, the three joint arms are connected by linking arm with operating board, and the basic arm is by support arm and car body Connection.

Further, the linking arm is telescopic arm, between the three joint arms and linking arm and basic arm and support arm it Between be all provided with amplitude oil cylinder.

Compared with prior art, this utility model possesses following advantage：

In flexible transmission component of the present utility model, including basic arm, it is socketed in the basic arm and can be from described Two joint arms stretched out in basic arm, three sections that be socketed in two joint arm and can stretch out from the external part of two joint arm Arm, telescopic oil cylinder, stretch rope chain bar and return rope chain bar, the telescopic oil cylinder includes cylinder barrel and is socketed on flexible in the cylinder barrel Bar, because each part in the flexible transmission component has above-mentioned annexation, the oil guide pipe in by expansion link makes cylinder Cylinder in rodless cavity oil-feed when, under the pressure of hydraulic oil, cylinder barrel can drive two joint arms in the lump to the side away from the external part To movement, so that two joint arms are stretched out from basic arm, and then three can be driven by stretching the gearing of rope chain bar and the first sprocket wheel Joint arm is stretched out from two joint arms, and in this process, the first sprocket wheel is equivalent to a movable pulley so that three joint arms are relative to basic arm Displacement be equal to 2 times of cylinder barrel shift motion (i.e. displacement of two joint arms relative to basic arm)；When the hollow structure in expansion link When making the rod chamber oil-feed in cylinder barrel, cylinder barrel can drive two joint arms in the lump to moving near the direction of the external part, so that two Joint arm bounces back in basic arm, and then can pull three joint arms in two joint arms by returning the gearing of rope chain bar and the second sprocket wheel Retraction, in this process the second sprocket wheel is equivalent to a movable pulley so that three joint arms are equal to cylinder barrel relative to the displacement of basic arm 2 times of shift motion (i.e. displacement of two joint arms relative to basic arm).The process be by the gearing of chain and sprocket wheel come The action of associated arm is driven, the annexation between each part and part is relatively simple, it is stable transmission, accurate and rapid, And the Stability Analysis of Structures of chain is higher and elastic deformation is less, so cause flexible transmission component stability when in use, Accuracy and safety are all higher.

Further, the Inner Constitution telescopic cavity of the basic arm, two joint arms and three joint arms, the telescopic oil cylinder, first Sprocket wheel, the second sprocket wheel, stretch rope chain bar and return rope chain bar all in the telescopic cavity, it can make the structure of this flexible transmission component It is more compact, and then reduce the abrasion of associated components and slow down that its is aging, extend its service life, and also maintenance can be reduced and tieed up Shield frequency, while keeping in repair, safeguarding more convenient, maintenance and maintenance cost are relatively low.

Further, the rope chain bar of stretching is provided with chain detection apparatus, and the chain detection apparatus can real-time detection correlation The state of chain, when related chain occurs fracture or during beyond default loosening value, it can send alarm signal, and with this one is entered Step improves the safety in utilization of the flexible transmission component, it is ensured that the personal safety of operator and other related personnel.

Accordingly, aerial work platform of the present utility model is obtained based on the improvement of above-mentioned flexible transmission component, because This, the characteristics of this aerial work platform equally inherits above-mentioned flexible transmission component.In addition, the three joint arms and operation table-hinges Connect, the basic arm is hinged with car body；The three joint arms are connected by linking arm with operating board, and the basic arm passes through support arm It is connected with car body；The linking arm is telescopic arm, is all set between the three joint arms and linking arm and between basic arm and support arm There is amplitude oil cylinder；Those technical characteristics all can further improve to a certain extent the aerial work platform simple operation, The correlated performance such as stability and safety.

To sum up, this utility model not only has preferable transmission performance, and with higher stability, safety and transmission Accuracy；Meanwhile, its is simple and compact for structure, and maintenance, repair are all more convenient, and maintenance, repair cost is relatively low, and service life is longer, It is also more convenient using operating.

【Description of the drawings】

Fig. 1 is a kind of structural representation of an exemplary embodiments of aerial work platform in this utility model；

Fig. 2 is the structural representation of the flexible transmission component of the aerial work platform shown in Fig. 1；

Fig. 3 is the partial enlarged drawing of part A in Fig. 2；

Fig. 4 is the partial enlarged drawing of part B in Fig. 2；

Fig. 5 stretches out status architecture schematic diagram for the flexible transmission component shown in Fig. 2；

Fig. 6 is the structural representation of the inside key transmission component of the flexible transmission component shown in Fig. 2, wherein, key is passed Dynamic component includes the first sprocket wheel, the second sprocket wheel, stretches rope chain bar, returns rope chain bar and telescopic oil cylinder etc.；

Fig. 7 is another status architecture schematic diagram of the inside key transmission component of the flexible transmission component shown in Fig. 2；

Fig. 8 is another status architecture schematic diagram of the inside key transmission component of the flexible transmission component shown in Fig. 2；

Fig. 9 is the structural representation of the telescopic oil cylinder of the flexible transmission component shown in Fig. 2；

Figure 10 is the partial enlarged drawing of C portion in Fig. 9.

【Specific embodiment】

Below in conjunction with the accompanying drawings this utility model is further described with exemplary embodiment, wherein identical in accompanying drawing Label all refers to identical part.Additionally, if it is known that the detailed description of technology is for illustrating feature of the present utility model It is unnecessary, then is omitted.

A kind of structural representation such as Fig. 1 institutes of one exemplary embodiments of aerial work platform that this utility model is provided Show, the flexible transmission that the aerial work platform includes car body 1, operating board 3 and couples together the car body 1 and operating board 3 Component 2.

It should be noted that the car body 1 includes vehicle frame, drive system, control system, wheel set etc., the operation Platform 3 is provided with guard rail etc..

Wherein, accompanying drawing 1～10 is referred to, its typical case for disclosing the flexible transmission component of this utility model jointly implements Example.The flexible transmission component 2 include basic arm 21, two joint arms 22, three joint arms 23, telescopic oil cylinder 24, stretch rope chain bar 27 and return Rope chain bar 28.

Two joint arm 22 is socketed in the basic arm 21 and can stretch from the basic arm 21 (upside shown in Fig. 5) Go out, the three joint arms 23 are socketed in two joint arm 22 and can be from the external part (upside shown in Fig. 5) of two joint arm 22 Stretch out.

The telescopic oil cylinder 24 includes the cylinder barrel 241 being fixed in two joint arm 22 and is socketed in the cylinder barrel 241 Expansion link 242, the expansion link 242 is inside hollow structure, the hollow structure 247 in the expansion link 242 and cylinder barrel 241 Cavity is communicated, be provided with oil guide pipe 245 in the hollow structure 247 on the expansion link 242, and the expansion link 242 stretches out End (downside shown in Fig. 7) is fixed on the basic arm 21.Preferably, the external part end face of the expansion link 242 passes through clamp 8 It is fixed on basic arm 21, is provided with the external part of the expansion link 242 on the cylinder barrel 241 and is easy to the cylinder barrel 241 The connecting portion being fixed in two joint arm 22, the connecting portion may include pin shaft hole, i.e., inserted in pin shaft hole by bearing pin, with This is realizing that cylinder barrel 241 is fixed in two joint arms 22；Certainly, the connecting portion on cylinder barrel 241 can also be located at other of cylinder barrel 241 Position, such as middle part of cylinder barrel 241 etc..

Additionally, being installed with the first sprocket wheel 25 on the telescopic oil cylinder 24, the second sprocket wheel 26 is installed with two joint arm 22, Second sprocket wheel 26 is closer to the external part of the cylinder barrel 241 relative to the first sprocket wheel 25；The one of the stretching chain 27 End is fixed on the basic arm 21, and the other end bypasses first sprocket wheel 25 and is fixed in the three joint arms 23, that is, stretch chain The two ends of bar 27 are all in the downside (on the basis of the direction that relevant drawings in Figure of description are put) of the first sprocket wheel 25；It is described The one end for returning rope chain bar 28 is fixed in the three joint arms 23, and the other end bypasses second sprocket wheel 26 and is fixed in the basic arm On 21, that is, upside of the two ends of rope chain bar 28 all in the second sprocket wheel 26 is gone back to (with the side that relevant drawings in Figure of description are put To on the basis of).Preferably, first sprocket wheel 25 on the telescopic oil cylinder 24 in external part its described away from At the oil cylinder head of one end, second sprocket wheel 26 is in two joint arm 22 at the external part of the expansion link 242；It is logical The frame mode is crossed, the first sprocket wheel 25 and the second sprocket wheel 26 the upper and lower (with phase in Figure of description of cylinder barrel 241 can be divided into On the basis of the direction that Radix Aconiti Coreani figure is put) at the position at two ends, it can be ensured that cylinder barrel 241 is more smoothly moved, and then drives dependent part The steady transmission of part and stretching motion；Certainly, the sprocket wheel 26 of first sprocket wheel 25 and second also can arrange other correct positions, For example the first sprocket wheel 25 is located at the position on cylinder barrel 241 in the middle part of cylinder barrel, or the second sprocket wheel 26 is leaned in two joint arms 22 At the position at the nearly middle part of cylinder barrel 241 etc..

Wherein, as shown in Fig. 9～10, the inner chamber of the cylinder barrel 241 of the telescopic oil cylinder 24 is by 242 points of expansion link to there is bar Chamber 244 and rodless cavity 243, i.e., the cavity that the inner chamber of cylinder barrel 241 part Chong Die with expansion link 242 is formed is rod chamber 244, the inner chamber of cylinder barrel 241 it is not overlap with expansion link 242 and in the end of expansion link 242 right side (to scheme in Figure of description On the basis of 10 directions put) part be rodless cavity 243；The hollow structure 247 of the expansion link 242 passes through interface channel 246 connect with rod chamber 244；Oil guide pipe 245 in the hollow structure 247 of the expansion link 242 and the hollow structure 247 all has External oil pipe is communicated.

Further, described time rope chain bar 28 with stretch 27 respective terminations of rope chain bar by chain connector 29 it is affixed In the three joint arms 23, and each termination is respectively and fixedly connected with the both sides of the chain connector 29；By the frame mode, Have and be easy to stretch rope chain bar 27, return and preferably realize that linkage is acted between rope chain bar 28 and three joint arms 23.Certainly, stretch rope chain bar 27 with Returning rope chain bar 28 also being fixedly connected by different connection member realizations and three joint arms 23 respectively.

Further, the rope chain bar 27 of stretching is provided with chain detection apparatus；The chain detection apparatus can real-time detection phase The state of chain is closed, when related chain occurs fracture or during beyond default loosening value, it can send alarm signal, come true with this The safety in utilization of the flexible transmission component 2 is protected, and then guarantees operator and the personal safety of other related personnel.Specifically , chain detection apparatus can be located at and stretch one end that rope chain bar 27 is connected with basic arm 21.

Preferably, the basic arm 21, two joint arms 22 and three joint arms 23 are all preferably hollow structure, certainly, described basic Arm 21, two joint arms 22 and three joint arms 23 are not limited to internal for hollow structure, and it is alternatively its that can realize meeting aforementioned condition His structure.

Further, the hollow structure inside of the basic arm 21, two joint arms 22 and three joint arms 23 constitutes telescopic cavity, described Telescopic oil cylinder 24, the first sprocket wheel 25, the second sprocket wheel 26, stretch rope chain bar 27 and return rope chain bar 28 all in the telescopic cavity；Its Can make the more compact structure of this flexible transmission component 2, and then reduce the abrasion of associated components and slow down that its is aging, extend it and use Life-span, and also maintenance and frequency of maintenance can be reduced, while keeping in repair, safeguarding more convenient, maintenance and maintenance cost are relatively low, separately Outward, also can reduce to a certain extent because the exposure of above-mentioned associated components makes outside the probability for touching injury by mistake of related personnel.When So, by telescopic oil cylinder 24, the first sprocket wheel 25, the second sprocket wheel 26, stretch rope chain bar 27 and return the part such as rope chain bar 28 and be located at telescopic cavity It is also outward feasible (i.e. on the outer wall of basic arm 21, two joint arms 22 and three joint arms 23).

To sum up, because expansion link 242 is affixed on basic arm 21, therefore when by appropriate liquid media drive cylinder barrel When 241, cylinder barrel 241 can drive two joint arms 22 to move (on the basis of the direction that relevant drawings in Figure of description are put) in the lump upwards It is dynamic, so that two joint arms 22 are stretched out from the upper end of basic arm 21, and then by stretching the gearing of the sprocket wheel 25 of rope chain bar 27 and first Three joint arms 23 are pulled to stretch out from the upper end of two joint arms 22, with infusion fluid medium is continued in cylinder barrel 241, two joint arms 22 and three are saved Arm 23 can continue upward end and extend, until it reaches required shift motion or maximum preset stroke；Wherein, in this process, One sprocket wheel 25 is equivalent to a movable pulley so that three joint arms 23 are equal to the shift motion of cylinder barrel 241 relative to the displacement of basic arm 21 2 times of (i.e. displacement of two joint arms 22 relative to basic arm 21), so have and are easy to a certain degree improving flexible stroke.

When the hollow structure 247 in by expansion link 242 makes 244 oil-feed of rod chamber in cylinder barrel 241, the meeting of cylinder barrel 241 Two joint arms 22 are driven to move down in the lump, so that two joint arms 22 are retracted from the upper end of basic arm 21, and then by returning rope chain bar 28 And second the gearing of sprocket wheel 26 three joint arms 23 can be pulled to bounce back in two joint arms 22, enter with lasting in expansion link 242 Oil, two joint arms 22 can continue to be bounced back to lower end with three joint arms 23, until it reaches required retraction degree is fully retracted in place；Its In, in this process, the second sprocket wheel 26 is equivalent to a movable pulley so that three joint arms 23 are equal to relative to the displacement of basic arm 21 2 times of the shift motion of cylinder barrel 241 (i.e. displacement of two joint arms 22 relative to basic arm 21).

Preferably, comprehensive Fig. 1 and other relevant drawings, the three joint arms 23 realize hinge by linking arm 5 with operating board 3 Connect, i.e., three joint arms 23 are hinged with linking arm 5, and linking arm 5 is connected with operating board 3, the linking arm 5 has is easy to operating board 3 even Connect and further realize in the horizontal direction of arm 5 a certain degree of extension and retraction；The basic arm 21 is by support arm 4 and car body 1 is hinged, i.e., basic arm 21 is hinged with support arm 4, and support arm 4 is flexibly connected with the associated components on car body 1；In addition, described three Amplitude oil cylinder 6 is all provided between joint arm 23 and linking arm 5 and between basic arm 21 and support arm 4, it can cause three joint arms 23, connect Connect arm 5 and the amplitude oil cylinder 6 that is connected with each other with it constitute a stable triangular structure, and basic arm 21, support arm 4 and The amplitude oil cylinder 6 being connected with each other with it also constitutes a stable triangular structure, and then the aerial work platform is being made With higher stability and safety during industry.Certainly, between the three joint arms 23, linking arm 5 and amplitude oil cylinder 6, Yi Jiji Other functions part is also had between this arm 21, support arm 4 and amplitude oil cylinder 6, associated components of levelling function etc. are used for example as.

When aerial work platform need to rise arm operation, two joint arms 22 in the flexible transmission component 2 of control are stretched with three joint arms 23 Go out, now, can synchronously stretch out under the drive of three joint arms 23 with the operating board 3 of the connection of flexible transmission component 2, meanwhile, it is also controllable Make related amplitude oil cylinder 6, support arm 4 and linking arm 5 to adjust extension angle or the position of associated arm, until operating board 3 is arrived Up to default operating position or maximum extension stroke.

In the same manner, two joint arms 22 and three joint arms when aerial work platform need to receive arm operation, in the flexible transmission component 2 of control 23 retractions, now, can synchronously bounce back with the operating board 3 of the connection of flexible transmission component 2 under the drive of three joint arms 23, meanwhile, also Can control related amplitude oil cylinder 6, support arm 4 and linking arm 5 to adjust angle or the position of associated arm, until operating board 3 times It is reduced to default operating position or original non-extension state.

To sum up, this utility model is the action that associated arm is driven by the gearing of chain and sprocket wheel, each part It is stable transmission, accurate and rapid and the annexation between part is relatively simple, and chain Stability Analysis of Structures is higher and bullet Property deformation it is less, and then cause flexible transmission component stability when in use, accuracy and safety all higher.

Therefore, this utility model not only has preferable transmission performance, and with higher stability, safety and transmission Accuracy；Meanwhile, its is simple and compact for structure, and maintenance, repair are all more convenient, and maintenance, repair cost is relatively low, and service life is longer, It is also more convenient using operating.

Although having been illustrated with some exemplary embodiments of the present utility model above, those skilled in the art will Understand, in the case of without departing from principle of the present utility model or spirit, these exemplary embodiments can be made a change, this The scope of utility model is limited by claim and its equivalent.

Claims (10)

1. a kind of flexible transmission component, it is characterised in that including basic arm, be socketed in the basic arm and can be from the base Two joint arms stretched out in this arm, the three joint arms that be socketed in two joint arm and can stretch out from the external part of two joint arm, Telescopic oil cylinder, stretch rope chain bar and return rope chain bar；The telescopic oil cylinder includes cylinder barrel and the expansion link being socketed in the cylinder barrel, institute The external part for stating expansion link is fixed on the basic arm, and the cylinder barrel is fixed in two joint arm；On the telescopic oil cylinder Be installed with the first sprocket wheel, be fixedly provided with the second sprocket wheel in two joint arm, second sprocket wheel relative to the first sprocket wheel closer to The external part for being easy to the expansion link to stretch out on the cylinder barrel；One end of the stretching chain is fixed on the basic arm, The other end bypasses first sprocket wheel and is fixed in the three joint arms；One end of described time rope chain bar is fixed in the three joint arms On, the other end bypasses second sprocket wheel and is fixed on the basic arm.

2. stretch as claimed in claim 1 transmission component, it is characterised in that stretching out near the expansion link on the cylinder barrel It is provided with end and is easy to the cylinder barrel to be fixed on the connecting portion in two joint arm.

3. stretch as claimed in claim 1 or 2 transmission component, it is characterised in that first sprocket wheel is located at the flexible oil On cylinder in the external part away from one end oil cylinder head at, second sprocket wheel close institute in two joint arm State at the external part of expansion link.

4. stretch as claimed in claim 1 transmission component, it is characterised in that described time rope chain bar passes through chain with rope chain bar is stretched Connector is fixed in the three joint arms, and one end of described time rope chain bar is respectively and fixedly connected with the chain with the one end for stretching rope chain bar The both sides of connector.

5. stretch as claimed in claim 1 transmission component, it is characterised in that the rope chain bar of stretching is provided with chain detection dress Put.

6. as claimed in claim 1 flexible transmission component, it is characterised in that the basic arm, two joint arms and three joint arms it is interior Portion constitutes telescopic cavity, the telescopic oil cylinder, the first sprocket wheel, the second sprocket wheel, stretches rope chain bar and returns rope chain bar all in described flexible In chamber.

7. a kind of aerial work platform, it is characterised in that including car body, operating board and as described in any one of claim 1～6 Flexible transmission component, the three joint arms of the flexible transmission component are connected with operating board, the basic arm of the flexible transmission component with Car body connects.

8. aerial work platform as claimed in claim 7, it is characterised in that the three joint arms are hinged with operating board, the base This arm is hinged with car body.

9. aerial work platform as claimed in claim 7 or 8, it is characterised in that the three joint arms are by linking arm and operation Platform connects, and the basic arm is connected by support arm with car body.

10. aerial work platform as claimed in claim 9, it is characterised in that the linking arm is telescopic arm, the three joint arms Amplitude oil cylinder is all provided between linking arm and between basic arm and support arm.