DE20303383U1 - Equestrian track maintenance cart with two-part swivel hoe - Google Patents

Abstract

A power (16) driven ground-maintenance cart has a wheeled chassis (14) with two axles and four wheels. The chassis draws a rake (19) consisting of a first heavy section (25) which is attached to the chassis, and a second lighter section (26) linked to the first (25). The rake assembly (19) is attached to the chassis by a swivel mount.

Description

20 The invention relates firstly to a device for self-propelled

Treatment of a ground surface, in particular a riding arena, according to the preamble of claim 1.

Such a device, which goes back to the applicant, is known from DE 201 12 731 U1.

The device described therein works in a highly satisfactory manner, which is ensured in particular by the pivoting arrangement of the tools, in particular the rake tool, on the chassis of the device. In this context, it is particularly important that the tool can exert a very high contact force on the ground surface, on the one hand, and on the other hand, due to its pivoting, in particular freely pivoting back arrangement, also has a certain amount of play, so that

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the tool can automatically pivot upwards, i.e. towards the chassis, when it encounters greater resistance. The adjustment mechanism only allows the tool to be set to the lowest possible position relative to the riding arena floor, whereby the tool can pivot freely in a higher position, but only against its own weight.

In order to achieve a sufficiently high contact pressure, the applicant has so far developed two embodiments: In a first variant, the rake tool is designed to be very heavy overall, so that a high contact pressure of the tool can be achieved due to the tool's own weight. In an alternative embodiment, a tool with a lower mass is provided, which can, however, be weighted down by additional weights, as shown in particular in Fig. 1 of DE 201 12 731 U1.

The invention is based on the object of developing the known device according to the preamble of claim 1 with regard to more variable application possibilities while enabling convenient operation.

The invention solves this problem with the features of claim 1, in particular with those of the characterizing part, and is accordingly characterized in that the tool is divided into a first element having a large mass, which is attached directly to the chassis, and a second, light element, wherein the second element can be detachably attached to the first element via a coupling device.

The principle of the invention is therefore essentially to divide the tool into two sections or parts, one of which is relatively heavy and provides the mass required for a high contact force. This first element is directly on the

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Chassis is pivotally attached in the conventional way and can be addressed by the adjustment device. A second element is relatively light and can be detachably attached to the first element using the coupling device. In this way, a particularly simple exchange of a tool, for example to adapt to a certain ground condition, is possible with particularly low operating forces and can be carried out by practically anyone. To do this, only the second element needs to be exchanged, while the first element can remain attached to the device.

The large mass of the first element provides a certain basic weight for the tool, which achieves sufficient pressure or pressing force for all possible applications. Of course, for certain applications, the weight of the tool can be increased by additional masses.

The device according to the invention for self-propelled processing of a soil surface also differs from other, non-generic devices of the prior art, which are usually referred to as tractors. These usually have attachments in the form of agricultural tractors with corresponding tools. However, these are very large.

Tractors are very heavy, which can destroy or at least permanently damage the sometimes very sensitive surfaces, such as riding arena surfaces. The use of such attachments or towed equipment is therefore fundamentally disadvantageous. Typically, the towed equipment, i.e. the actual tool, is coupled to a lifting device on the tractor. The lifting device is also pivotally connected to the tractor, but cannot be described as the first element of a tool in the sense of the present invention.

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According to the invention, the first element has a large mass, which serves to exert a large contact force on the ground surface. Likewise, the attachment cannot be described as the second, light element of the tool, since it is usually very heavy. A light element in the sense of the invention is an element that can be easily carried by a user by hand.

The device according to the invention can be designed in such a way that it has an extremely low weight and is very narrow and manoeuvrable. At the same time, however, the possibility is provided of exerting a higher weight on individual tool parts, for example on the tips of the tines, due to the high weight of the first element, than would be possible with an attachment for an agricultural tractor.

According to an advantageous embodiment of the invention, the second element forms a type of tool head and is interchangeable to adapt to a specific condition of a floor surface. A particular advantage here is that the second element as a functional unit is only light in weight, whereby different tool heads can be made available for different floor surfaces or different processing steps. The tool head itself can be easily and conveniently interchanged using the coupling device which functions like an adapter.

According to a further advantageous embodiment of the invention, the first element is designed as a carrier plate. This embodiment offers the possibility of assigning a particularly large mass to the first element. A carrier plate in the sense of the invention is understood to be a solid element which is plate-shaped or shovel-shaped. It can, as in the case of

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Embodiment according to the drawings, but also in the basic form of an angle element. In particular, it is intended to design the carrier plate as a solid metal element, to which, for example, a cable pull or a lever-like pulling element can act to pivot the carrier plate. Since the first and second elements are connected to one another in the assembled state, pivoting the first element by means of the adjustment device simultaneously causes pivoting of the second element.

According to a further advantageous embodiment of the invention, the coupling device is assigned a clamping device by means of which the second element can be clamped relative to the first element. In this embodiment, the replacement of a second element is particularly simple, since, for example, the possibility is provided of initially only loosely attaching the second element to the first element and then securely fixing it in a simple manner using the clamping device. In a further embodiment of the invention, the clamping device can be assigned a clamping lever with which the operating forces for fixing can be kept particularly low.

According to a further advantageous embodiment of the invention, coupling means, in particular projections and/or recesses, are assigned to the first element, which cooperate with corresponding counter-coupling means, in particular recesses and/or projections on the second element. This embodiment of the invention enables a particularly simple and secure attachment of the second element to the first element. . .

According to a further advantageous embodiment of the invention, stop elements for a coupling movement are assigned to the first element and/or the second element.

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This embodiment further simplifies the attachment of the second element to the first element.

The invention further relates to a tool for processing a ground surface and for attachment to a device for self-propelled processing according to the preamble of claim 16.

Such a tool is known from DE 201 12 731 U1 cited at the beginning. The known workpiece is made in one piece and is pivotably attached to the chassis of the device. It has a relatively high weight in order to generate sufficient contact pressure on the floor surface.

The object of the invention is to further develop the known tool in such a way that a high level of operating comfort is provided with more variable application possibilities.

The invention solves this problem with the features of claim 16 and is accordingly characterized in that the tool is divided into a first element having a large mass, which can be attached directly to the chassis, and a second, light element, wherein the second element can be attached to the first element via a coupling device.

Further advantages of the invention emerge from the uncited subclaims and from the following descriptions of several embodiments shown in the drawings.

The drawings show:

Fig. 1 shows a schematic side view of the basic type of a device according to the invention for self-propelled

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Treatment of a soil surface as known from its structural design from DE 201 12 731 U1,

Fig. 2 in perspective, broken-off schematic view a first embodiment of a rake tool with

only one prong,

Fig. 3 the embodiment according to Fig. 2 with ten inserted tines,

Fig. 4 in a representation according to Fig. 3 a second embodiment of a second element of the rake tool, which has spring tines,

Fig. 5 in a single view a pair of spring tines,

Fig. 6 shows a third embodiment of a tool according to the invention, the second element of which comprises a combination of a rake tool with a roller,

Fig. 7 shows a fourth embodiment of a tool according to the invention, the second element of which has a rotary harrow device,

Fig. 8 shows a fifth embodiment of a tool according to the invention, the second element of which has a vibrating device,

Fig. 9 the second element from Fig. 8 according to view arrow IX in a schematic side view,

Fig. 10 shows a schematic plan view of the first and second elements according to the embodiment of the device according to Fig. 3

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in a pre-assembly state, wherein the second element is rotated approximately 90 degrees about its longitudinal axis, and

Fig. 11 in a schematic, partially sectioned, broken-off view approximately along section line Xl - Xl in Fig. 10 the

Connection area between the first and the second element in the assembled state.

The device designated in its entirety with 10 in Fig. 1 corresponds in its original type to the device described in DE 201 12 731 U1. The content of this utility model is hereby fully included in the content of the present patent application. To avoid repetition, the basic principle of the known device 10 is only briefly explained with reference to Fig. 1: The device 10 is used to work on a ground surface 11, in particular a riding arena. Alternatively, the device can also be used to work on other areas of sports facilities or other agricultural areas.

The device is typically three-wheeled and has a first front axle 12 with a single wheel and a second rear axle 13 with two wheels, the latter being driven by a motor 16. A seat 15 for a user 17 is arranged on a chassis 14.

In the case of a horse trained to work on a riding arena

Device 10 is provided with a sliding tool 18 between the two axles 12, 13. In the direction of travel X behind the second axle 13, a raking tool 19 and a smoothing tool 20 are provided.

In the following, only the tool 19 will be considered in more detail, which is only shown schematically in Fig. 1 and has a

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Pivot axis 21 is pivotally connected to the chassis 14. An adjustment device 22, which is only indicated schematically, comprises an adjustment lever 23, which can be connected to the tool 19, for example, via a cable 24. By actuating the adjustment lever 23, the tool 19 can be raised and pivoted about the pivot axis 21. In this way, individual processing depths can be set.

The tool 19 according to the invention is first described in detail below with reference to Fig. 2:

First, a first element 25 is provided, which is designed as a carrier plate 27. A second element 26, which is designed essentially in the manner of a carrier strip 34, can be detachably fastened to this.

The first element 25 has fastening eyes 28, by means of which it can be fixed to the chassis shown in Fig. 1 and pivoted about a pivot axis 21. A user 17 can adjust the height of the tool 19 by means of a pulling element 29, which is only shown schematically in Fig. 2 and is part of the adjusting device 22, which is only shown schematically in Fig. 1, and which is pivotally connected to the first element 25 via a pivot axis 30. Instead of the pulling element 29, a cable pull or the like can of course also be used.

The first element 25 also has a fastening flange 25 at its end remote from the fastening point on the chassis 14. Plug-in elements 33 are arranged on this flange, which are not shown in Fig. 2, but can be seen, for example, in Figs. 3 and 10. Fig. 3 shows a position in which the plug-in elements 32 are still in plug-in receptacles 33 located on the second element 26.

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have not penetrated. The state shown in Fig. 3 is therefore a pre-assembly state.

A plurality of receptacles 36 are provided on the support bar 34, in which a specific number of tines 35 can be detachably fastened in adaptation to a specific condition of the ground or the ground surface.

In addition, the second element 26 has two essentially wedge-shaped stop elements 37, the function of which will be described later. A hook element 38 is provided centrally on the second element 26, which interacts with a tensioning device 39 arranged on the first element 25. The tensioning device 39 comprises a tensioning lever 40 which can be pivoted about a pivot axis 43, as well as a spring element 41 and an eyelet-like gripper member 42 which can grasp the hook element 38.

The attachment of the second element 26 to the first element 25 can be accomplished in the following way:

First, the second element 26, i.e. the support strip 34, is brought close to the fastening flange 31 of the first element 25. For this purpose, the prongs 35 can already be inserted into the receptacles 36. However, the latter can also be done later.

At this point in time, the second element 26 can be displaced in a particularly simple manner, since the second element 26 has only a very small mass and is therefore very light.

In the simplest case, the second element 26 is now moved in the direction of travel X relative to the first element 25, which is attached to the device 10 and is essentially stationary, until the stop elements 37 strike the fastening flange 31. A user is

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therefore, an optimal positioning of the second element 26 with regard to its longitudinal alignment to the first element 25 is signaled in a simple manner. Now an alignment of the second element 26 along the double arrow Y, which can be easily checked visually, takes place until the plug-in receptacles 33 are arranged in accordance with the plug-in elements 32 and the plug-in elements 32 can penetrate into the plug-in receptacles 33.

By actuating the clamping lever 40 from its rest position shown in Fig. 3 by pivoting it clockwise about the pivot axis 43, the gripper member 42 can grasp the hook element 38. By subsequently pivoting the clamping lever 40 back into its rest position shown in Fig. 3, which is preferably locked at the dead center, the second element 26 is clamped relative to the first element 25 and is permanently secured to the first element 25.

The first element 25 can be made almost as solid as desired, since the large mass of the first element 25 does not pose a problem for the replacement of the second element 26, which can be referred to as the tool head. The pivoting of the overall heavy tool 19 can be carried out by the adjustment device 22 via suitable transmission gears etc., so that the operating force for adjusting the heavy tool 19 can be kept low overall.

Fig. 4 shows an alternative embodiment of a second element 26, in which spring tines 44 are now provided instead of the fixed, i.e. essentially stable or unyielding tines 35 shown in Figs. 2 and 3. Fig. 5 shows that each pair of spring tines 44 is made from a one-piece, appropriately cut, bent piece of spring steel,

BJJ Kleinmaschinen GmbH · · ···. . · · \ . ;

so that two sections of spiral windings 45 are provided between the two spring prongs 44.

The spring tines are also used to loosen up a riding surface in particular, but are used instead of the rigid tines for surfaces that contain textile materials such as plastic chips, plastic fibers and sand. Such spring tines are also used for riding surfaces with mats.

The embodiment of Fig. 6 shows a further tool 19, the second element 26 of which comprises a roller element 46 in addition to a carrier bar 34 with spring tines 44. The roller element 46 is connected to the carrier bar 34 via a drawbar 47.

In this embodiment, the weight force resulting from the large mass of the first element 25 acts essentially on the support bar 34 and thus on the spring tines 44. However, other embodiments are also conceivable in which the large weight of the first element 25 is transferred directly to the axis 48 of the rolling element 46 and thus to the roller 26.

Likewise, an embodiment is conceivable such that the second element 26 comprises exclusively a roller element 46 and no additional support strip 34 for the tines 35, 44.

A further advantage is that the actual tool head, i.e. the second element 26, can be designed to be particularly light. The second element 26, designed as a roller, can therefore have a significantly lower weight than would actually be necessary to achieve the desired rolling properties. The required pressing force can in turn be applied by the first element 25, which is attached directly to the chassis 14.

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Fig. 7 shows a further embodiment of a second element 26, wherein rotary harrows 49 are assigned to the carrier bar 34 provided with the same plug-in receptacles 33. Here, a plurality of tines 50 are provided, each of which can be rotated about a vertical axis 51. For this purpose, a drive or motor 52 is arranged on the carrier bar 34, which drives all tines 50 synchronously via a chain drive 53.

The rotary harrows are used, for example, to loosen and mix the riding arena ground, whereby the high weight of the first element 25 can ensure that the tines 50 of the rotary harrows 49 can penetrate sufficiently deeply into the ground.

Another embodiment of a second element 26 for a tool 19 is shown in Fig. 8. Here, a vibrating mechanism 54 in the form of a vibrating plate is provided. From Fig. 9 it can be seen that the vibrating mechanism 54 is essentially bowl-shaped in cross section and has a vibrating surface 55. A motor 52 drives a shaft 56, which interacts in a known manner with eccentrics 57, which are only indicated schematically. The rotation of the shaft 56 and the eccentric arrangement of end pieces result in a conversion of the rotary movement of the shaft 56 into a vibrating movement.

In this way, a surface, especially a riding arena surface, can be compacted.

Here too, the large mass of the first element 25 advantageously leads to the fact that very high compression forces can be achieved, but the second element 26 can be designed to be particularly light.

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The provision of the coupling device, which comprises the clamping device 39, the hook element 38, the plug elements 32 and the plug receptacles 33, additionally enables a reduction in the vibration transmission of the strong vibrations of the shaking mechanism 54 to the chassis 14 of the device 10. Operation is therefore more pleasant for a user.

Another embodiment of a tool 19 (not shown) provides that the second element 26 is designed in the manner of a scraper and has, for example, a strip made of rubber or metal. This can be designed in a straight, elongated manner like a ruler or can also be curved. With such a scraper element, for example, riding arena surfaces and also floors in stables, e.g. in cattle stalls or pigsties, can be cleaned.

For the sake of clarity, the same reference symbols have been used in the description of the figures for identical or comparable elements.

Claims (16)

1. Device ( 10 ) for the self-propelled processing of a ground surface ( 11 ), in particular a riding arena, with two axles ( 12 , 13 ), at least one of which is driven by a motor ( 16 ), and with a chassis ( 14 ) to which at least one tool ( 19 ), in particular a rake tool, is pivotally attached and can be pivoted by means of an adjusting device ( 22 ), characterized in that the tool ( 19 ) is divided into a first element ( 25 ) having a large mass, which is attached directly to the chassis ( 14 ), and a second, light element ( 26 ), wherein the second element ( 25 ) can be detachably attached to the first element via a coupling device ( 32 , 33 , 37 , 38 , 39 , 42 ). 2. Device according to claim 1, characterized in that the second element ( 26 ) forms a type of tool head and is exchangeable in adaptation to a specific condition of the ground surface ( 11 ). 3. Device according to claim 1 or 2, characterized in that the first element ( 25 ) is designed as a carrier plate ( 27 ). 4. Device according to one of the preceding claims, characterized in that the coupling device is assigned a clamping device ( 39 ), by means of which the second element ( 26 ) can be clamped relative to the first element ( 25 ). 5. Device according to one of the preceding claims, characterized in that the first element ( 25 ) is assigned coupling means ( 32 ), in particular projections and/or recesses, which cooperate with corresponding counter-coupling means ( 33 ), in particular recesses and/or projections, on the second element ( 26 ). 6. Device according to one of the preceding claims, characterized in that the first element ( 25 ) and/or the second element ( 26 ) are assigned stop elements ( 37 ) for a coupling movement. 7. Device according to one of the preceding claims, characterized in that the second element ( 26 ) is designed as a carrier strip ( 34 ). 8. Device according to one of the preceding claims, characterized in that prongs ( 35 , 44 ) are assigned to the second element ( 26 ). 9. Device according to claim 8, characterized in that the tines ( 35 , 44 ) are detachably attachable to the second element ( 26 ). 10. Device according to claim 8 or 9, characterized in that the tines are essentially inelastic. 11. Device according to one of claims 8 or 9, characterized in that the tines are designed as spring tines ( 44 ). 12. Device according to one of the preceding claims, characterized in that the second element ( 26 ) comprises a roller ( 46 ). 13. Device according to one of the preceding claims, characterized in that the second element ( 26 ) is provided with a shaking mechanism ( 54 ). 14. Device according to one of the preceding claims, characterized in that rotary harrows ( 49 ) are associated with the second element ( 26 ). 15. Device according to one of the preceding claims, characterized in that a scraper is associated with the second element ( 26 ). 16. Tool ( 19 ) for working on a ground surface ( 11 ) and for attachment to a device ( 10 ) for self-propelled working on the ground surface, in particular for attachment to a device according to claim 1, which has two axes ( 12 , 13 ), at least one of which is driven by a motor ( 16 ), and which has a chassis ( 14 ) to which the tool ( 19 ) can be pivotally attached, characterized in that the tool ( 19 ) is divided into a first element ( 25 ) having a large mass, which can be attached directly to the chassis ( 14 ), and a second, light element ( 26 ), the second element ( 26 ) being attachable to the first element ( 25 ) via a coupling device ( 32 , 33 , 37 , 38 , 39 , 42 ). is.