Set of parts and method of operation of self-propelled crane

FIELD: mechanical engineering; materials handling facilities.

SUBSTANCE: proposed set of part of self-propelled crane includes chassis, first connecting devices installed on part of said chassis, additional support containing at least one outrigger resting of ground when self-propelled crane is in stationary condition, second connecting devices installed on additional support for butt-joining with said first connecting device on chassis for detachable connection of additional support to said part of chassis. Set includes also pull-type axle unit consisting of at least one wheel installed for rolling along ground, and third connecting devices installed on pull-type axle unit for butt-jointing with said first connecting devices on chassis for detachable connection of said pull-type axle unit with said part of chassis. First connecting devices are made for alternate butt-joint with said second connecting devices or with said third connecting devices providing alternate connection of additional support or said pull-type axle unit to crane, accordingly.

EFFECT: provision of easy transformation or changing of crane chassis structure.

16 cl, 9 dwg

 

The technical field to which the invention relates.

The present invention relates to self-propelled crane. More specifically, the present invention relates to a kit of parts, including the chassis of the mobile crane, the host trailer axles and additional support (outrigger). The invention allows to configure a mobile crane for the purpose of completing the work and specially for the transport movement.

The level of technology

There are various versions of self-propelled cranes, built on the basis of the kit parts, including the chassis with a number of bearing axes and the various components mounted on the chassis or attached to it (see, for example, Russian patent documents No. 92002153, 66 23/80, 1992, 2063923, 66 23/36, 1993 and 2081776, B 62 D 21/02, 1996).

Closest to the invention are kits of parts for self-propelled crane, chassis containing at least one additional support (outrigger)containing at least one ground support element resting on the ground, when a mobile crane is in a stationary state, and connecting means mounted on a part (or parts) of the chassis and the only additional support or each additional support with the possibility of mutual coupling for attaching the specified additional supports (poles) to the specified portion (s) of the chassis (see, e.g. the measures Russian patent No. 2079428, 66 23/00, 1990). Accordingly, a method of operating a mobile crane involves the movement of a mobile crane only during insertion of the support element only or each additional support from contact with the ground.

In the past to effectively serve the global market, manufacturers of self-propelled cranes had to develop a mobile crane, in at least two configurations. For example, figure 1 shows the self-propelled crane 2, developed taking into account a number of factors that are relevant for the US market, while figure 2 presents a mobile crane 4, designed for the European market.

The self-propelled crane 2 has some bearing axis 6, which are spaced at a greater distance, and removable rear additional support 8. Before going on the road in the U.S. additional support 8 must be removed for separate transportation of the vehicle. Remove rear additional support 8 reduces the overall weight of the mobile crane 2. Average additional support 10 can be attached or removed depending on whether additional weight reduction, to ensure compliance with the requirements of the road in relation to weight restrictions.

A relatively large distance between the axes 6 is selected from the matching requirements of the RA is sitting between the axes, established rules governing the permissible load on the bridges across the country, individual States or individual areas. For example, in some areas, the required minimum distance between wheels (defined as the distance from the first axis in the first group of axes to the first axis in the second group) is about 6 meters

Self-propelled crane 2 is adapted for the American market, because it can be moved with most sites without seeking special permits or entitlements in respect of the maximum weight and the distance between the axes. Increased distance between the axes 6 and increased the total length of the self-propelled crane 2, allowing it to conform to the restrictions set out under the rules of the road, somewhat limit the maneuverability of the crane 2 on narrow or winding roads. However, because roads in the U.S. are typically routed with minimum bends and with a relatively large width, the distance between the axles and the total length of the crane, however, does not impede the safe movement of the crane on various construction sites.

Self-propelled crane 4 of figure 2 has a number of bearing axis 12, which are located a relatively short distance, and a fixed rear support 14 and a fixed average additional support 16. Other structural characteristics of nahodneho crane 4 is similar or identical structural characteristics of the mobile crane 2.

Self-propelled crane 4 is particularly well adapted for the European market. The roads in Europe are often narrow with sharp turns. In this regard, it is desirable to have a closer location axis and a reduced overall length, in order to ensure the maneuverability of the mobile crane 4 when his vehicle movement on site. Usually there are no restrictions on the distance between the axes for travel on the bridges that facilitates the reduction of the total length. In addition, the allowable load per axle in Europe are generally much higher than in the US. For example, a typical axle loads for self-propelled cranes in Europe reach 12 so This fact facilitates the use of fixed additional supports on the chassis of the crane. Of course, back additional support 14 or the average additional support 16, if necessary, can be made removable in order to ensure compliance with the European requirements for the axle load.

When the manufacturer of self-propelled cranes trying to develop a new self-propelled crane for the global market, it encounters a problem. If the manufacturer offers a mobile crane chassis, designed for the U.S., it will have an adverse impact on the sales of the crane in Europe due to the low mobility of such a crane on European roads. If izgotovitelyam self-propelled crane chassis, designed for Europe, it will have an adverse impact on the sales of the crane in the United States in connection with the need to frequently seek permissions and privileges on the movement of the crane along the roads in the United States. For this reason, the manufacturer of cranes, oriented to the world market, which previously had to deal with an expensive and time-consuming task of developing, testing and manufacturing of two different chassis for a single model of the crane, one of which is intended for the U.S. market and one for the European market.

The invention

The problem to which the present invention is directed, is to eliminate the financial and time costs of developing, testing and/or manufacturing of two chassis for a single faucet designs and, in spite of this, to create a faucet that meets the requirements of the world market.

A further problem solved by the present invention is the creation of a structure of the chassis, which can be easily converted or rebuilt in accordance with the requirements of the US market, European or any other market.

These and other problems are solved by the creation of a set of parts of a mobile crane. The kit of parts according to the present invention includes: a chassis; first connecting means mounted on part of the chassis; additional support containing at least one ground TNA the element, resting on the ground, when a mobile crane is in a stationary state; second connecting means mounted on the additional support with the possibility of joining with the specified first connecting means on the chassis for removable attaching additional support to the chassis, the host trailer axis, containing at least one wheel installed with the possibility of rolling on the ground, third connecting means installed on the host trailer axis with the possibility of coupling with the first coupling means on the chassis for removable attaching the specified node trailer axle to the specified part of the chassis. The first connecting means is configured to alternate match the specified second connecting means or with specified third connecting means. Thus, the valve may be an alternative attached either additional support or site trailer axis.

In addition, to solve these and other problems is proposed a method of operating a mobile crane. The method involves the following operations: providing a mobile crane, comprising a chassis with first connecting means mounted on a part of the chassis; additional support, provided with a second connecting means which, articulated with the first connecting means, and a host of trailer axles, provided with a third connecting means, the uncoupling of the second connecting means with the first connecting means for separating additional support from a specified portion of the chassis; coupling a third connecting means with the first connecting means for joining node trailer axle to the specified portion of the chassis; bringing at least one wheel included in the site trailer axis, in contact with the earth and the movement of the mobile crane.

Other objectives of the invention and the scope of its application will become clearer from the detailed description of the invention given hereinafter. It should, however, be aware that the detailed description and specific examples, while characterize preferred embodiments of the invention, are given only as examples. Indeed, for specialists in the relevant field the following detailed description will make it apparent various changes and modifications not beyond the intent and scope of the present invention.

List of figures

The present invention will become clearer from the following detailed description and accompanying drawings are only illustrative and, therefore, not granicoat the present invention.

Figure 1 shows, in side view, a mobile crane having a chassis, designed to travel on roads, typical for the United States, and represents the level of technology.

Figure 2 shows, in side view, a mobile crane having a chassis, designed to travel on roads, typical for Europe, and represents the level of technology.

Figure 3 shows, in side view, a mobile crane according to the present invention having a chassis configured to travel on the roads of Europe.

Figure 4 shows, in side view, a mobile crane according to figure 3 with the chassis, configured for movement on the roads of the USA.

Figure 5 is a top view of the removable support attached to the chassis, shown in figure 3.

6 is a side view of the removable support on figure 5.

7 is a top view of a removable node trailer axle, attached to the chassis, shown in figure 3.

Fig is a side view of the removable node trailer axis 7.

Fig.9 is a side view on a mobile crane according to figure 4 with the wheel platform for arrows.

Information confirming the possibility of carrying out the invention

Figure 3 illustrates a variation of the mobile crane 20 of the present invention. Self-propelled crane 20 includes a telescopic boom 21; in addition, its composition may include one or more booths 23 driver/crane operator. With mahogny crane 20 is equipped with tunable chassis 22. Figure 3 shows the chassis 22, configured for movement on European roads.

The kit of parts according to the present invention includes a chassis 22, which contains the first axis 24, the second axis 26, a third axis 28, the fourth axis 30, the fifth axis 32, the sixth axis 34, the seventh axis 36; fixed (non-removable) additional support 38 and removable back support 40. Optionally, the average additional support can also be made removable.

When a mobile crane 20 is moved on European roads, middle and rear additional support can be attached to the chassis 22 (assuming that the weight restrictions for European roads met). If the weight restrictions are a problem, one or both, middle and rear, additional supports 38, 40 can be removed and shipped separately. Further, when a mobile crane 20 is moved on European roads, all axis 24, 26, 28, 30, 32, 34, 36 are carriers, because the distance between the axes is not limited from the point of view of the rules of crossing the bridges.

4 shows a mobile crane 20, chassis 22 which is configured to be driven on U.S. roads. The third axis 28 and the sixth axis 34 is raised, so that they are no longer carrying. The rise of the third and sixth axes 28, 34 may be effected by any suitable known mechanism, for example by using the system the suspension we Megatrack™ in which the hydraulic cylinder and the accumulator acts as a spring. Thus, when the third and the sixth axis 28, 34 are carriers, they can be made manageable.

As shown in figure 4, additional removable rear bearing 40 of the chassis 22 is removed and replaced by the node 42 trailed axis. Of course, the average additional support 38 can also be removed to further reduce the weight of the mobile crane 20. Thanks to the rise of the third and sixth axes 28, 34 and replacing the rear for more support 40 node 42 trailed axis mobile crane 20 can be made to meet the weight limitations established by Federal rules, regulations, and state or local regulations on crossing the bridges.

5 and 6 is a more detailed illustration (top view and side) removable rear additional support 40, is connected to a rear end portion 48 of the chassis 22. The rear end part 48 of the chassis includes first connecting means 50. Rear additional support 40 includes second connecting means 52 for coupling with the first coupling means 50. Rear additional support 40 also includes two ground control element 46. In order to lift and install/remove the rear support 40 may be used bolt 21 of the crane.

7 and 8 illustrate the top and side views, node 42 trailer axles, etc is docked to the rear end portion 48 of the chassis 22. Node 42 trailed axis includes third connecting means 54 for coupling with the first coupling means 50. Third connecting means 54 is preferably similar or identical to the second connecting means 52 additional support 40. Node 42 trailed axis also contains the bearing axis 56 with two or more wheels 58. Node 42 trailed axis preferably also equipped with suspension components. Wheel 58 can be performed managed, unmanaged or self-managed. In order to lift and install/remove the node 42 trailer axis, can be used arrow 21.

First, second and third connecting means 50, 52 and 54 are made in accordance with commercially available and of the connecting means employed in combination with known hosts trailed axis or known additional supports. For this reason, details of the connecting means are of secondary importance for the implementation of the present invention. The present invention can be implemented in combination with any connecting means known or subsequently invented, provided that the second and third connecting means 52, 54 can cochleates with the first connecting means 50, and by providing sufficient stability-high volt the node 42 trailer axles and rear additional support 40.

Node 42 trailed axis can contain more than one axis. When one or more of the axes of the node 42 trailed axis can be performed managed, unmanaged or self-managed.

It should be noted that the rear for more support 40 may be removed, and the node 42 trailed axis is selected, even when the valve is used in Europe, although local rules and do not require such adjustment. Crane operator/driver may prefer this option, especially in a situation where a mobile crane 20 must be moved to the site on such roads in Europe, which are relatively wide and straight.

Fig.9 illustrates the configuration of a mobile crane, similar to figure 4, except that the bolt 21 is deployed and positioned over the rear end part 48 of the chassis 22. The boom 21 is attached to the trailer wheel 60 platform for the crane's boom. This configuration distributes the weight of the mobile crane 20 to more axes. In the result, further reducing the load on one axis than in the configuration in figure 4. In this case, the distance between groups of axes including the axis of the wheeled platform 60 for arrows, will meet the relevant requirements of the current U.S. rules of crossing the bridges. The suspension system, the type of control and wheel diagram for a node trailer axis can be m deficitobama thus, to chassis 22 answered the relevant rules in a particular region of the world, where you must use a mobile crane 20.

The description and the drawings have illustrated the easily tunable self-propelled crane 20, having seven axes and related to the type cranes with a lifting capacity of 500 short tons (about 450 tons). The principles of the present invention can be applied to any chassis of the crane regardless of the number of axles. So, the faucet may have more or fewer than 7 axles; for configuration changes can not be raised the third and sixth, while the other axis.

From the above description it should be obvious that it admits of numerous modifications. Such modifications should not be considered as beyond the ideas and scope of the present invention. All such modifications which would be obvious to the person skilled in the art, are included in the scope of the invention defined by its formula.

1. The kit of parts of a mobile crane, comprising a chassis, a first connecting means mounted on part of the chassis, additional support, containing at least one ground support element resting on the ground, when a mobile crane is in a stationary state, the second connecting means mounted on the additional support with the ability sostakovic the specified first connecting means on the chassis for removable attaching the specified additional support to the chassis, the host trailer axis, containing at least one wheel installed with the possibility of rolling on the ground, and the third connecting means installed on the host trailer axis, with the possibility of joining with the specified first connecting means on the chassis for removable attaching the specified node trailer axle to the specified portion of the chassis, and the specified first connecting means is configured to alternate match the specified second connecting means or with specified third connecting means, thus providing an alternative connection to the faucet specified additional support or specified node trailer axis, respectively.

2. The kit of parts according to claim 1, characterized in that the node trailer axis is controlled.

3. The kit of parts according to claim 1 or 2, characterized in that the node trailer axis contains two axes and at least four wheels.

4. The kit of parts according to any one of the preceding paragraphs, characterized in that the additional support includes two ground reference element.

5. The kit of parts according to any one of the preceding paragraphs, characterized in that it further comprises a shaft mounted on the specified chassis and towed wheeled platform for perception-load the specified arrows while moving the specified crane.

6. Set the t, according to claim 5, characterized in that the specified towed wheeled platform attached to the said arm with the ability to detach.

7. The kit of parts according to any one of the preceding paragraphs, characterized in that the chassis contains a number of axes, each of which carries several wheels.

8. The kit of parts according to claim 7, characterized in that it contains means associated at least with one axis from the specified number of axes for individual lifting of the specified axis with a separation from the land of the wheels associated with the specified axis.

9. The kit of parts according to any one of the preceding paragraphs, characterized in that a specified part of the chassis is the rear end part with respect to the direction of normal movement of the mobile crane.

10. The kit of parts according to claim 1 or 2, characterized in that the node trailer axis contains one axis and at least two wheels.

11. A method of operating a mobile crane, containing the arrow, chassis, provided with first connecting means, additional support, provided with second connecting means, and the host trailer axis, provided with a third connecting means, and the method includes the following operations: undocking the second connecting means with the first connecting means for separating additional support from a specified part of the chassis, the third coupling will connect the selected funds with first connecting means for joining node trailer axle to the specified portion of the chassis, bringing at least one wheel included in the site trailer axis, in contact with the earth and the movement of the mobile crane.

12. The method according to claim 11, characterized in that it further includes the following operations: lifting at least one of the axes of a number of axes that are installed on the chassis and having several wheels, after the host trailer axis was attached to a mobile crane, and the specified lifting is done with the wheels associated with the specified axis from the earth.

13. The method according to claim 11 or 12 characterized in that it further includes the following steps: stop the self-propelled crane, undocking third connecting means with the first connecting means and the branch node trailer axis from the specified portion of the chassis, docking second connecting means with the first connecting means to attach additional supports to the specified portion of the chassis, aligning at least one ground support element in contact with the ground and the crane, to perform its main function.

14. The method according to any of 11 to 13, characterized in that the said first connecting means mounted on the end portion of the chassis, which is the rear relative to the direction of normal movement of the mobile crane.

15. The method according to any of 11 to 14, characterized in that the support shafts, attached to the chassis during movement of the crane, used wheel platform.

16. The method according to item 15, characterized in that it further includes an operation of attaching the specified wheeled platform to the boom.



 

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