GB2623587A

GB2623587A - Accessory for concrete surface preparation

Info

Publication number: GB2623587A
Application number: GB2215647.5A
Authority: GB
Inventors: Pasqualotto Robert
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-10-21
Filing date: 2022-10-21
Publication date: 2024-04-24
Also published as: GB202215647D0

Abstract

An accessory 2 suitable for concrete surface S preparation comprising an arm or boom 21 with a first end 21a connectable to a concrete surface preparation apparatus 3 (e.g. a levelling screed head or spreading tool) and a second end 21b connectable to a vehicle 1 by detachable connection means 22. The accessory may have rotation means 23 e.g. a pivoting hinged connection, for rotating the arm across the surface in a lateral side to side manner, and the arm may be telescopically extendable to allow a large coverage area. Supporting legs, e.g. telescopically extending pistons or rams 24, may be used to support the arm at a distal end. The accessory can be connected to a general use vehicle, such as a tractor or loader, making use of the vehicle’s hydraulic, pneumatic or electrical systems, meaning surface preparation does not require a bespoke vehicle. Sensors may be used to detect the position of parts of the accessory to inform a controller/allow a degree of automated control. Also claimed is a kit of parts comprising the accessory and a tool.

Description

ACCESSORY FOR CONCRETE SURFACE PREPARATION

This invention relates generally to an accessory for preparing a surface, a kit of parts comprising the same and a vehicle comprising such an accessory. More particularly, but not exclusively, this invention relates to an accessory for concrete surface preparation, a kit of parts comprising the same and a vehicle comprising such an accessory.

It is known to use a series of different single-purpose vehicles in the various stages of preparation of concrete surfaces. For example, it is known to use an uncured concrete io levelling vehicle to level uncured concrete. In known vehicles a boom or extendable arm extends from the centre of the vehicle. A screed head is attached to the end of the boom. Prior to use the vehicle is moved into a location in which uncured concrete is to be levelled. In use, the boom is extended with the screed head raised from the ground. The screed head is then lowered into contact with unlevelled uncured concrete and the boom is retracted, pulling the screed head across the uncured concrete to thereby level it.

These known levelling vehicles are both large and heavy. Moreover, such vehicles are purpose built for this single task of levelling uncured concrete. As will be appreciated, such vehicles are relatively expensive to purchase or hire and also to store and transport. It is also known to use other, different, single-purpose vehicles for other stages of preparation of a concrete surface. For example, it is known to use a concrete topping spreader vehicle in order to spread topping material over a wet concrete surface. Access to all of these vehicles may be cost prohibitive. Moreover, storage and transport of these vehicles is relatively expensive.

It is a non-exclusive object of the invention to mitigate one or more of the above-identified problems with prior art vehicles.

Accordingly, a first aspect of the invention provides an accessory for concrete surface preparation (e.g. a concrete surface preparation accessory), the accessory being arranged to be selectively connectable to a vehicle, the accessory comprising an arm having a first end for connection to a concrete surface preparation apparatus and a second end comprising connection means (e.g. connection apparatus) for selective connection to a vehicle, wherein the accessory comprises a rotation means (e.g. rotation apparatus) configured to allow at least part of the arm to be rotated in a side-to-side manner relative to the vehicle to allow repositioning of the concrete surface preparation apparatus.

Provision of the rotation means as part of the accessory itself allows the arm to be rotated relative to a vehicle to which it is attached, even when the vehicle is a general-purpose vehicle (e.g. a loader, tractor or the like). In this way the operator of the accessory does not need to acquire an entire vehicle but only the accessory. Meanwhile, relatively rotating the arm allows a concrete surface preparation apparatus attached to the first end of the arm to operate in a relatively increased area compared to a static arm. This provides time and cost savings.

In embodiments, the accessory according to the first aspect may further comprise a support means. The support means may be attached or attachable to the arm, for example between the first and second ends thereof The support means may be arranged or arrangeable, in use, to contact a surface over which the arm extends, for example in order to at least partially support the arm.

A second aspect of the invention provides an accessory for concrete surface preparation (e.g. a concrete surface preparation accessory), the accessory being arranged to be selectively connectable to a vehicle, the accessory comprising an arm having a first end for connection to a concrete surface preparation apparatus and a second end for connection to a vehicle, wherein the accessory comprises a support means (e.g. support apparatus) attached to the arm between the first and second ends thereof, the support means being arranged or arrangeable, in use, to contact a surface over which the arm extends in order to at least partially support the arm.

It is believed that by the accessory comprising its own support means this enables the accessory to be used with a general-purpose vehicle (e.g. a loader, tractor or the like). The mass of the concrete surface preparation apparatus at the first end of the arm must necessarily be supported. In known single-purpose vehicles it is known to raise the vehicle using stilts to provide stability and hence support the mass of an apparatus at the end of a boom (even when that boom has been extended). However, raising and lowering these stilts is time consuming. Further, loaders, tractors and the like do not include such stilts.

Hence, provision of the support means on the arm of the accessory allows the accessory to be used with a wide variety of vehicles whilst maintaining proper support for the concrete surface preparation apparatus (and, further, saves time and expense). The use of the support means attached to the arm may also allow the arm to have a relatively greater extension than is possible with current vehicles.

In embodiments, the accessory according to the second aspect may include the second end of the arm comprising connection means, e.g. for selective connection to a vehicle. The accessory may comprise a rotation means, for example configured to allow at least part of the arm to be rotated (e.g. in a side-to-side manner relative to the vehicle). The rotation may be to allow repositioning of the concrete surface preparation apparatus.

The features described herein apply to any aspect of the invention.

io In embodiments, the arm may be an extendable and/or retractable arm. The arm may comprise or be a boom, e.g. a telescopic arm or boom. Where the arm is extendable and/or retractable it may be manually extendable and/or retractable. Alternatively, the arm may be automatically extendable and/or retractable. The arm may comprise an actuator, for example for extending and/or retracting the arm. The actuator may be powered or driven pneumatically, hydraulically and/or electrically. The actuator may comprise or be one or more pistons.

In embodiments, the support means may be attached to the arm nearer to the second end of the arm than the first end. The support means may be attached to the arm at or adjacent the second end thereof. The support means may be attached to the arm at plural locations along the length thereof. The support means may be or comprise support apparatus. The support means may comprise plural supports or legs. Each support or leg may be attached to the arm at a different position along the length of the arm. Alternatively, each support or leg may be attached to the arm at the same distance along the length of the arm. First and second of the supports or legs may be attached to the arm at or adjacent opposite sides of the arm, e.g. at the same distance along the arm.

The support means may be fixedly or removably attached to the arm. Where the arm is an extendable and/or retractable arm the support means may be attached to a part of the arm which does not move during extension and/or retraction of the arm. In embodiments, the arm comprises two or more portions. A first portion may retract and/or extend relative to a second portion, in use. In embodiments, the arm comprises three portions. The first and second portions may retract and/or extend relative to the third portion, in use. The third portion may be configured or arranged not to extend or retract, in use (e.g. to be stationary, in use) In embodiments, the support means may be configured to be moveable, in use, for example between a deployed position or condition in which the support means contacts the surface over which the arm extends and a stowed position or condition in which the support means does not contact the surface and/or vice versa.

In embodiments, movement between the deployed and stowed positions or conditions may comprise extension or retraction of at least a portion of the support means and/or comprises rotation of at least a portion of the support means relative to the arm. For example, the io support means may be configured so that at least a portion thereof is extendable or retractable to move between the deployed and stowed positions or conditions. For example, the support means may be configured so that at least a portion thereof is rotatable relative to the arm to move between the deployed and stowed positions or conditions.

In embodiments, the support means may be configured to be automatically moveable, in use, for example between the deployed and stowed positions or conditions and/or vice versa. In embodiments, the support means may be configured to be manually moveable, in use, for example between the deployed and stowed positions or conditions and/or vice versa. The support means may be configured to be both automatically and manually moveable, in use, for example between the deployed and stowed positions or conditions and/or vice versa.

In embodiments, the support means may comprise an actuator, for example for moving the support means between the deployed and stowed positions or conditions and/or vice versa.

The actuator may be automatically controlled, e.g. by a controller. The actuator may comprise a linear actuator and/or a rotational actuator. The actuator may be powered or operated electrically, hydraulically and/or pneumatically driven. The actuator may comprise or be one or more pistons.

In embodiments, the or a length of the support means may be adjustable, in use, for example so as to move the first end of the arm relatively toward or away from the surface under it (e.g. the ground underneath it). In embodiments, the or an angle by which the support means extends from the arm is adjustable, in use, e.g. so as to move the first end of the arm relatively toward or away from the surface under it (for example, the ground underneath it). The support means may be configured to allow its length and/or angle relative to the arm to be adjusted, in use. An actuator of the support means (where provided) may be configured to adjust the length of the support means and/or of the angle of the support means relative to the arm, in use. Beneficially, in this way the arm can be adjusted in order to be substantially parallel to a surface (e.g. a ground surface) even where the ground surface is sloped or non-horizontal.

In embodiments, the support means may comprise one or more legs. The support means may comprise a foot, e.g. at an end of the leg or support means. The foot may be configured or arranged to engage with a surface (e.g. the ground). The foot may be configured to adjust io to the angle of the surface (e.g. the ground) which it contacts, e.g. automatically or manually. The foot may be hingedly attached to the leg. The foot may be configured to be able to at least partially rotate relative to the leg (e.g. to the rest of the support means).

Where rotation means is provided the rotation means may be configured to allow rotation relative to the vehicle over an angle of between 20 and 270 degrees, for example of between 90 and 270 degrees, say between 120 and 240 degrees. The rotation means may be or comprise rotation apparatus. The rotation means may be configured to allow rotation relative to the vehicle over an angle of greater than 90, 120 or 150 degrees.

In embodiments, the rotation means may comprise a pivot about which the arm is rotatable, in use. The rotation means may comprise a hinge. The rotation means may comprise a swivel means (e.g. mechanism). The rotation means may comprise first and second cooperating portions. The first portion may be attached or attachable to the arm or integrally formed therewith. The second portion may be attached or attachable to the connection means and/or to a vehicle. When the first and second portions are engaged with one another the first portion may be rotatable relative to the second portion. One of the first and second portions may comprise or define a recess. The other of the first and second portions may comprise a projection. The projection and recess may be configured (e.g. sized and/or shaped) to cooperate with one another. The projection may be received at least partially within (and/or through) the recess. The recess may be defined within a body, e.g. a boss or tube. The recess and/or the projection may be substantially circular in plan cross-section. The recess and/or the projection may be substantially or partially cylindrical. The projection may tightly or closely fit within the recess, e.g. in use.

In embodiments, the rotation means may comprise an actuator, e.g. for causing rotation of the arm (for example relative to a vehicle to which it is attached). The actuator may be automatically controlled, e.g. by a controller. The actuator may be powered or operated electrically, hydraulically and/or pneumatically driven. The actuator may comprise or be one or more pistons. The actuator may comprise a motor, e.g. a step motor. The actuator may comprise a hydraulic, pneumatic or electric motor. The rotation means may comprise a gear system, for example to transmit power from the actuator to turn the arm, in use.

In embodiments, the rotation means may be configured to allow or provide rotation of the io arm relative to the vehicle in a substantially horizontal plane (e.g. a side-to-side manner relative to the vehicle). The rotation means may be configured to allow or provide rotation of the arm relative to the vehicle in a substantially vertical plane (e.g. a side-to-side manner relative to the vehicle).

In embodiments, the rotation means may be positioned at or adjacent the second end of the arm. The rotation means may be at least partially connected or attached to the connection apparatus. For example, the accessory may comprise a rest or rest surface, for example to which the rotation means is secured or securable. The rest may be secured or attached or depend from the connection apparatus. The rest may be configured to at least partially support the arm, e.g. the second end thereof In embodiments, the rotation means may comprise an indexing mechanism, for example for allowing the arm to be rotated into specific predefined angles relative to the vehicle. The indexing mechanism may comprise a releasable catch, for example for releasably fixing the rotation means at a selected angle.

In embodiments, the rotation means may comprise a rotatable surface or body. The rotatable body may comprise the rotatable surface. The rotatable surface may be fixedly secured or securable to the second end of the arm, e.g. removably. The rotation means may comprises a pivot. The rotatable surface may be configured to be rotatable about the pivot, in use. The rotatable surface may be supported on the rest (where provided). The rotatable surface may be configured to be moveable (e.g. rotatable) in use, relative to the rest. The pivot may extend from or through the rest. The pivot may extend through the rotatable surface. The pivot may be fixedly (e.g. non-rotatably) secured to the rotatable surface or the rest. Alternatively, the pivot may be free to rotate relative to both the rest and rotatable surface. The rotation means may comprise one or more bearings, e.g. between the rest and the rotatable surface. In embodiments, the rotatable surface and arm are configured to be movable (e.g. rotatable) together about the pivot, in use. In embodiments, the rotatable surface and arm are together rotated relative to the rest surface, in use. In embodiments, the rotation means is configured such that the rotatable surface is moveable (e.g. rotatable) relative to the rest surface, in use. In embodiments one or more gears may be provided. The one or more gears may be arranged to cause the rotatable surface to rotate, in use. In embodiments, the rotation means may comprise a actuator (e.g. a motor). The actuator may be arranged to cause the rotatable surface to rotate relative to the rest surface, in use (e.g. via the one or more gears). The actuator may be electrically, pneumatically or hydraulically powered.

The rotation means may comprise a locking means or mechanism, for example to secure the arm into a selected angle relative to a vehicle to which it is connected. The locking means may comprise one or more fixing (e.g. bolt, pin, catch or the like) for securing the arm in a position relative to the rest. The rotatable surface may comprise one or more apertures therethrough, e.g. spaced at regular intervals (for example about and/or adjacent its periphery). The rest may comprise corresponding apertures. In use, a fixing may be secured through an aperture in the rotatable surface and a corresponding aperture in the rest, e.g. to lock the rotation means. The locking means may comprise the or an indexing mechanism.

In embodiments, the connection means may comprise a quick release mechanism, e.g. a removable quick release mechanism. Selective connection of the accessory to a vehicle may comprise a user connecting (e.g. manually) the accessory to the vehicle. The connection means may be or comprise connection apparatus. The connection means may comprise a recess configured to be hooked onto or over a cooperating projection of the vehicle in order to form a connection thereto. The connection means may comprise one or more projection configured to be hooked into a cooperating recess of the vehicle in order to form a connection thereto. The connection means may comprise one or more power connections, for example for powering one or more components of the accessory (e.g. actuators, where provided). The power connectors may be electrical, pneumatic and/or hydraulic. The connection means may comprise one or more control connection, e.g. for controlling one or more component of the accessory. The power connectors may be or comprise one or more quick connect couplings for connecting the accessory to hydraulic, pneumatic and/or electrical supplies (e.g. of a or the vehicle to which the accessory is connected).

In embodiments, the accessory may comprise one or more sensors. The one or more sensors may be configured or arranged to detect an extent of extension of the arm (where the arm is extendable and/or retractable). One or more of the sensors may be configured or arranged to detect the height of the surface under the first end of the arm, in use. For example, one or more of the sensors may be configured or arranged to detect a slope of the surface under the arm, in use. Additionally or alternatively, one or more of the sensors io may be configured or arranged to detect the orientation of the arm, e.g. a relative height of the first and second ends of the arm or a slope of the arm relative to horizontal. The, one, some or each of the sensors may be motion sensors. The, one, some or each of the sensors may be position sensors. The sensors may be contact or non-contact sensors. For example, the, one, some or each of the sensors may be capacitive displacement sensors, eddy-current sensors, hall effect sensors, inductive sensors, piezo-electric sensors, encoders, proximity sensors, ultrasonic sensors or the like.

The accessory may be connected to a vehicle at the second end of the arm (e.g. by the connection means, where provided) for powering of the accessory.

The first end of the arm may comprise at least a portion of an attachment mechanism, e.g. for connecting a concrete surface preparation apparatus. The attachment mechanism may be or comprise a quick release mechanism. The attachment mechanism may be configured to be hooked to a concrete surface preparation apparatus. The attachment mechanism may be configured to allow a concrete surface preparation apparatus to be hooked to it. The attachment mechanism may comprise a hook, latch or other releaseable (e.g. removable) mechanism. The attachment mechanism may comprise a projection configured to cooperate with a hook or latch or other releasable mechanism of a concrete surface preparation apparatus.

A further aspect of the invention provides an accessory for concrete surface preparation (e.g. a concrete surface preparation accessory), the accessory comprising an arm having a first end for connection to a concrete surface preparation apparatus and a second end comprising connection means (e.g. connection apparatus) for selective connection to a vehicle, wherein the accessory comprises a rotation means (e.g. rotation apparatus) configured to allow at least part of the arm to be rotated relative to the vehicle in a substantially horizontal plane to allow repositioning of the concrete surface preparation apparatus.

A further aspect of the invention provides an accessory for concrete surface preparation (e.g. a concrete surface preparation accessory), the accessory comprising an arm having a first end for connection to a concrete surface preparation apparatus and a second end for connection to a vehicle, wherein the accessory comprises a rotation means (e.g. rotation apparatus) configured to allow at least part of the arm to be rotated relative to the vehicle to in a substantially horizontal plane (e.g. in a side-to-side manner relative to the vehicle) to allow repositioning of the concrete surface preparation apparatus.

In embodiments, the accessory according to the further aspects may further comprise a support means. The support means may be attached or attachable to the arm, for example between the first and second ends thereof. The support means may be arranged or arrangeable, in use, to contact a surface over which the arm extends, for example in order to at least partially support the arm.

A further aspect of the invention provides a kit of parts comprising an accessory according to any preceding Claim and a concrete surface preparation apparatus. The kit of parts may comprise a stand-alone controller, e.g. for controlling, in use, the operation of components of the accessory as described herein. For example, the controller may be for controlling operation of the arm, the rotation means, the support means and/or the concrete surface preparation apparatus attached thereto. The controller may be configured or configurable to control operation of one or more actuators of the accessory (where provided). The stand-alone controller may be operably connected or connectable to the accessory and/or the vehicle. For example, the stand-alone controller may be operably connected or connectable to the accessory wirelessly or by wired connection. In use the stand-alone controller may be spaced from the accessory and/or the vehicle to which the accessory is connected or attached. The controller may be for controlling, in use, the operation of the accessory independently of the or a vehicle to which it is connected. For example, the controller may be configured or configurable to control, in use, the operation of the accessory independently of the vehicle to which it is connected.

In embodiments, the concrete surface preparation apparatus may be or comprise a screed head for levelling uncured concrete and/or a spreading apparatus for dispensing topping material. The screed head may comprise one or more of an auger screw part for lateral spreading of uncured concrete, a blade for movement of uncured concrete and a vibration plate for final smoothing of the uncured concrete. The spreading apparatus may comprise a reservoir for holding topping material and a dispenser for dispensing topping material.

A further aspect of the invention provides a kit of parts comprising a stand-alone controller, e.g. for controlling, in use, the operation of components of the accessory as described io herein.

The controller may be configured or configurable (e.g. programmed or programmable) to move the support means (where provided) from the deployed position or condition to the stowed position or condition. For example, the controller may be configured to receive sensor data from the one or more sensors (where provided). The controller may be configured to move the support means from the deployed position or condition to the stowed position or condition upon receipt of sensor data from the one or more sensors. For example, the controller may be configured to move the support means from the deployed position or condition to the stowed position or condition when sensor data from the one or more sensors detects that the extension of the arm has reached a first threshold, for example is equal to or less than a first threshold. Where the arm comprises plural portions the first threshold may correspond to one of the portions being fully retracted or extended. The first threshold may correspond to all moveable portions being fully retracted or extended.

The controller may be configured or configurable (e.g. programmed or programmable) to adjust the or a length of the support means, in use. The controller may be configured or configurable (e.g. programmed or programmable) to adjust the or an angle by which the support means extends from the arm, in use. For example, the controller may be configured to actuate the or an actuator to adjust the or a length of the support means, in use, e.g. in response to sensor data received from the one or more sensor (where provided). Additionally or alternatively, the controller may be configured to actuate the or an actuator to adjust the angle by which the support means extends from the arm, in use, e.g. in response to sensor data received from the one or more sensor (where provided). The controller may be configured or configurable to adjust the support means (e.g. a length thereof or an angle thereof relative to the arm) in order to reach or maintain a desired slope angle of the arm relative to the horizontal (e.g. a desired relative height of the first and second ends of the arm). The desired slope angle (e.g. desired relative height of the first and second ends of the arm) may be pre-set. In this way a surface may be prepared where the surface is at an angle relative to the horizontal.

The controller may be configured or configurable (e.g. programmed or programmable) to control rotation of the arm relative to the vehicle via the rotation means. For example, the controller may be configured or configurable to actuate the actuator of the rotation means io to rotate the arm relative to the vehicle.

In embodiments, the kit of parts may comprise an input device. The input device may be used by an operator or user of the vehicle and/or the accessory, e.g. to control or program the accessory. The input device may be operatively connected or connectable to the controller. The input device may be operatively connected or connectable to the controller via wired or wireless connection. The input device may be for use in or on the vehicle (e.g. in a cabin thereof). Additionally or alternatively, the input device may be for use at a location spaced from or outside of the vehicle.

A further aspect of the invention provides a vehicle for preparing a concrete surface, the vehicle comprising an accessory as described herein.

A further aspect of the invention provides a vehicle for preparing a concrete surface, the vehicle comprising a kit of parts as described herein connected to it. Where the kit of parts comprises a stand-alone controller this may not be connected to the vehicle but may, instead, be spaced from the vehicle, in use. Alternatively, the stand-alone controller may be connected or attached to the vehicle, in use.

In embodiments, the accessory described herein may be connected or connectable to the vehicle at a location which is at or adjacent the end or side of the vehicle. For example, the accessory may be connected or connectable to the vehicle at a location spaced from the centre of the vehicle. Beneficially, the concrete surface preparation apparatus can thereby be moved over a relatively greater area than would be the case were the accessory to be attached to the centre of the vehicle. In particular, the turning circle (via rotation of the rotation means) is relatively greater where the accessory is connected to a vehicle at a location spaced from its centre than it would be were it to extend from the centre of the vehicle. It has been found that in this way, the concrete surface preparation apparatus can be used in locations which would otherwise be difficult to reach (e.g. due to the size of the vehicle). It has also been found that by increasing the working area of the concrete surface preparation apparatus the vehicle has to be moved fewer times in order to complete concrete surface preparation than would otherwise be the case. This results in a time and cost saving. Additionally, through use of a support means attached to the arm the vehicle may be relatively smaller and lighter than known single-purpose vehicles. Without wishing to be bound by any particular theory it is believed that the support provides a pivot with the io vehicle acting as counterbalance to the mass of the concrete surface preparation apparatus. With known single-purpose vehicles the vehicle must be sufficiently heavy to alone support the mass of an apparatus at the end of an extendable boom (absent the mechanical advantage of a pivot).

In embodiments, the vehicle may be a driven or driveable vehicle. Alternatively, the vehicle may not be driven or driveable. In such a circumstance the vehicle may be attached or attachable to a further vehicle which may be driven or driveable. The vehicle or further vehicle may comprise its own source of power. The vehicle or further vehicle may provide the power for the accessory, in use, for example where the power may be electrical, hydraulic and/or pneumatic. The vehicle may comprise means or apparatus for moving from one location to another, for example one or more tracks or wheels. The vehicle may comprise means or apparatus for relatively lowering or raising the accessory relative to a surface thereunder.

Within the scope of this application it is expressly intended that the various aspects, embodiments, examples and alternatives set out in the preceding paragraphs, in the claims and/or in the following description and drawings, and in particular the individual features thereof, may be taken independently or in any combination. That is, all embodiments and/or features of any embodiment can be combined in any way and/or combination, unless such features are incompatible. For the avoidance of doubt, the terms "may", "and/or", "e.g.", "for example" and any similar term as used herein should be interpreted as non-limiting such that any feature so-described need not be present. Indeed, any combination of optional features is expressly envisaged without departing from the scope of the invention, whether or not these are expressly claimed. The applicant reserves the right to change any originally filed claim or file any new claim accordingly, including the right to amend any originally filed claim to depend from and/or incorporate any feature of any other claim although not originally claimed in that manner.

Embodiments of the invention will now be described by way of example only with reference to the accompanying drawings in which: Figure 1 shows a schematic side view of a vehicle with an accessory for concrete surface preparation and a concrete surface preparation apparatus attached to it; Figure 2 shows a schematic plan view of the accessory and concrete surface to preparation apparatus of Figure 1; Figure 2a shows a close-up view of a portion of Figure 2; Figure 2b shows a close-up view similar to Figure 2a in which a locking mechanism has been applied to the accessory; Figure 3 shows a schematic side view of the vehicle of Figure 1 in which the arm is in an extended condition; Figure 4 shows a schematic plan view of the vehicle of Figure 1 in which the arm is in a retracted condition and has been rotated by 90 degrees relative to the vehicle; Figure 5 shows a schematic plan view of the vehicle of Figure 1 in which the arm is in an extended condition and has been rotated by 90 degrees relative to the vehicle; Figure 6 shows a schematic side view of an alternative vehicle with an alternative accessory for concrete surface preparation and a concrete surface preparation apparatus attached to it; Figure 7 shows a schematic side view of the vehicle of Figure 6 in which the arm is an extended condition; Figure 8 shows a schematic end view of the vehicle of Figure 6 in which the arm is an a retracted condition and has been rotated by 90 degrees relative to the vehicle; Figure 9 shows a schematic side view of an alternative vehicle with an accessory for concrete surface preparation and a concrete surface preparation apparatus attached to it; Figure 10 shows a schematic plan view of an alterative vehicle with an accessory for concrete surface preparation and a concrete surface preparation apparatus attached to it; Figure 11 shows a schematic plan view of the vehicle of Figure 10; Figure 12 shows a schematic side view of a concrete surface preparation apparatus; Figure 13 shows a partial cross-sectional side view of the concrete surface preparation apparatus of Figure 12; and Figure 14 shows an partial isometric view of the concrete surface preparation apparatus of Figure 12.

Referring now to Figures 1 to 3, there is shown a vehicle 1 having an accessory 2 for concrete surface preparation according to an embodiment of the invention attached to it. A concrete surface preparation apparatus 3 is attached to the accessory 2. A stand-alone controller 4 for operating the accessory 2 independently of the vehicle 1 is also provided.

In the embodiment shown in Figure 1 the vehicle 1 is a wheel loader. However, it will be appreciated by one skilled in the art that the vehicle 1 may be a different type of vehicle 1. For example, the vehicle 1 may be a crawler loader, a rigid wheel loader, a tractor, or the like. In this embodiment the vehicle 1 has not been adapted for use with the accessory 2.

The accessory 2 for concrete surface preparation comprises an arm 21, connection apparatus (e.g. connection means) 22, rotation apparatus (e.g. rotation means) 23 and support apparatus (e.g. support means) 24.

The arm 21 has first and second ends 21a, 21b. The first end 21a is releasably connected to a concrete surface preparation apparatus 3. The second end 21b comprises the connection apparatus 22. The arm 21 is a telescopic boom in this embodiment. The arm 21 is extendable and retractable, e.g. along its length. The arm 21 is automatically extendable and retractable. The arm 21 includes actuators A. The actuators A are controllable, in use, to extend and retract the arm 21. The arm 21 comprises three portions (as shown in Figure 3). The first portion is adjacent the first end 21a. The third portion is adjacent the second end 21b. The second portion is between the first and third portions. The first and second portions are configured to telescopically extend and retract relative to the second end 21b of the arm 21, in use. The third portion is configured to not extend or retract relative to the second end 21b of the arm 21, in use. The arm 21 is formed from metal.

The support apparatus 24 is attached to the arm 21 between the first and second ends 21a, 21b thereof. The support apparatus 24 is attached to the third (non-extendable) portion of the arm 21 in this embodiment. The support apparatus 24 is arranged to contact the surface S over which the arm 21 extends. The support apparatus 24 at least partially supports the arm 21. The support apparatus 24 comprises one or more legs or supports. In this embodiment the support apparatus 24 comprises two legs (see Figure 2). The two legs are attached at opposite sides of the arm 21. A foot is provided at the end of each of the legs, in order to contact the surface S under the arm 21. The support apparatus 24 comprises one or more actuator A. In this embodiment, there are two actuators A, one for each of the legs. The actuators A are configured to cause the support apparatus 24 to move between a deployed position or condition in which the support apparatus 24 contacts the surface S under the arm 21 and a stowed position or condition in which the support apparatus 24 is not in contact with the surface S under the arm 21. The actuators A are pistons in this embodiment. In this embodiment, the actuators A are configured to cause each of the legs to extend or retract in length. That is to say, the actuators A are configured to cause the foot of each leg to move toward or away from the arm 21. In this embodiment the support apparatus 24 (e.g. the legs) extend in a direction substantially perpendicularly to the longitudinal or principal axis of the arm 21.

The connection apparatus 22 is for selective connection to a vehicle 1. In this embodiment, the connection apparatus 22 is connected to the front of the vehicle 1. The connection apparatus 22 is provided (e.g. attached or connected to) the first end 21a of the arm 21. In embodiments, the connection apparatus 22 may be removably attached or connected to the first end 21a of the arm 21. The connection apparatus 22 may comprise one or more projection or hook. The one or more projection or hook may be configured to be received in corresponding and cooperating recesses in the vehicle 1. In this embodiment, the connection apparatus 22 comprises a plate P. The plate P may include the one or more projection or hook. Additionally or alternatively, the vehicle 1 may comprise the one or more projection or hook and the connection apparatus 22 (e.g. the plate P) may comprise the cooperating recesses). Additionally or alternatively the connection apparatus 22 may be secured to the vehicle 1 via one or more fasteners, e.g. bolts or the like.

The accessory 1 comprises a rest surface SU. In this embodiment, the rest surface SU extends from or is otherwise attached to the plate P of the connection apparatus 22.

The rotation apparatus 23 is configured to allow at least part of the arm 21 to be rotated in a side-to-side manner relative to the vehicle 1 to allow repositioning of the concrete surface preparation apparatus 3.

The rotation apparatus 23 is located at the second end 21b of the arm 21. As shown in Figure 2a, the rotation apparatus 23 comprises a rotatable surface 230. The rotatable surface 230 is fixedly secured to the second end 21b of the arm 21, e.g. removably. The rotation apparatus 23 comprises a pivot 231. The pivot 231 extends through an aperture in the second end 21b of the arm 21, an aperture in the rotatable surface 230 and an aperture in the rest surface SU. In embodiments, the arm 21 is clamped to the rotation apparatus 23 via a clamp and the pivot 231 extends through an aperture in the clamp (additionally or alternatively to an aperture in the arm 21). In embodiments, the rotatable surface 230 and arm 21 are configured to be movable (e.g. rotatable) about the pivot 231, in use. In embodiments, the rotatable surface 230 and arm 21 are together rotated relative to the rest surface SU, in use. In embodiments, the rotation apparatus 23 is configured such that the rotatable surface 230 is moveable (e.g. rotatable) relative to the rest surface SU, in use. In embodiments, bearings (not shown) are provided between the rotatable surface 230 and the rest surface SU. In embodiments one or more gears may be provided. The one or more gears may be arranged to cause the rotatable surface 230 to rotate, in use (e.g. relative to the rest surface SU). In embodiments, the rotation apparatus 23 may comprise a motor or other actuator. The motor or other actuator may be arranged to cause the rotatable surface 230 to rotate relative to the rest surface SU, in use (e.g. via the one or more gears).

The rotatable surface 230 includes apertures AP therethrough, e.g. spaced at regular intervals (for example about and/or adjacent its periphery). Corresponding apertures are provided in the rest surface SU. In use, when the rotatable surface 230 has been manually rotated relative to the rest surface SU into a desired position a fixing F (e.g. a pin or bolt) is positioned through one or more of the apertures AP in the rotatable surface 230 and into the cooperating aperture in the rest surface SU. The apertures AP and fixings F comprise a locking mechanism or means. The fixings F and apertures AP can be seen in Figures 2a and 2b. In embodiments, additionally or alternatively other locking mechanisms may be used. Where the rotation apparatus 23 is not manually operated the fixings F and apertures AP may not be provided.

In embodiments, the rotation apparatus 23 is configured to allow the arm 21 to rotate relative to the vehicle 1 by an angle of greater than 120 degrees, for example greater than 150, 160, 170 or 180 degrees In this embodiment, the concrete surface preparation apparatus 3 comprises a screed head for levelling uncured concrete. In particular, the screed head (as shown in greater detail in Figures 12 to 14) also includes apparatus for topping spreading. As shown in Figures 12 to 14, the screed head comprises an auger screw part 31 for lateral spreading of uncured concrete, a blade 32 for movement of uncured concrete, a vibration plate 33 for final smoothing of the uncured concrete, a reservoir 34 for holding topping material and a dispenser 35 for dispensing topping material.

In embodiments, however, a different type or configuration of concrete surface preparation io apparatus 3 may be used with the accessory 2. To accomplish this, the concrete surface preparation apparatus 3 is removably connected via a connection 36 to the first end 21a of the arm 21. This connection 36 may comprise a quick release mechanism. Additionally or alternatively the connection 36 may comprise one or more fixings, e.g. bolts or the like.

The accessory 2 further comprises one or more sensors 25. At least one of the sensors 25 is configured to detect an extent of extension of the arm 21. At least one of the sensors 25 is configured to detect the height of the surface S under the first end 21a of the arm 21, in use. The sensors 25 may be contact or non-contact sensors. For example, the, one, some or each of the sensors 25 may be capacitive displacement sensors, eddy-current sensors, hall effect sensors, inductive sensors, piezo-electric sensors, encoders, proximity sensors, ultrasonic sensors or the like. The sensors 25 are configured to send sensor data relating to the extent of extension of the arm 21 and/or the height of the surface S under the first end 21a of the arm 21 to the controller 4.

The stand-alone controller 4 is operably connected to the accessory 2. The connection is wireless in this embodiment. However, in embodiments the connection may be at least partially wired. In this embodiment the controller 4 is shown in the cabin of the vehicle 1. However, in embodiments the controller 4 may be spaced from the vehicle 1. The controller 4 may be positioned on or possitionable on the accessory 2 or spaced from the vehicle 1 and the accessory 2, in use.

The controller 4 is configured or configurable to control, in use, the operation of the accessory 2 independently of the vehicle 1 to which it is connected. The controller 4 is configured or configurable to control operation of the actuators A of the arm 21 and the support apparatus 24. Additionally, the controller 4 is configured or configurable to control operation of the concrete surface preparation apparatus 3. The controller 4 is configured to receive sensor data form the one or more sensors 25.

The controller 4 is configured or configurable to move the support apparatus 24 from the or a deployed position or condition to the or a stowed position or condition. The controller 4 comprises an input device 41 for an operator of the vehicle 1 and/or the accessory 2 to control and/or program the accessory 2 and/or the concrete surface preparation apparatus 3.

to Prior to use, the accessory 2 is connected to the vehicle 1. In this embodiment, the accessory 2 is connected to the front of the vehicle 1 via the connection apparatus 22. A concrete surface preparation apparatus 3 is connected to the second end 21b of the arm 21.

In use, the vehicle 1 may be moved to a position in which an uncured concrete surface S is intended to be levelled (where the concrete surface preparation apparatus 3 comprises apparatus for levelling uncured concrete). With the arm 21 in the fully retracted condition the accessory 2 is lifted slightly by the vehicle 1. In this embodiment, the front portion of the wheel loader causes the connection apparatus 22 to tilt so that the concrete surface preparation apparatus 3 is lifted away from the surface (e.g. ground) underneath it. The controller 4 then causes the actuators A of the arm 21 to extend the arm 21 into its fully extended condition. The vehicle 1 lowers the accessory 2 (in this embodiment by causing the connection apparatus 22 to tilt) such that the concrete surface preparation apparatus 3 contacts the surface S to be processed. The controller 4 receives sensor data from the one or more sensor 25, relating to the height of the first end 21a of the arm 21 above the surface S for processing. The controller 4 automatically adjusts the length of the support apparatus 24 so that the height of the first end 21a of the arm 21 is within a predetermined threshold range. In this way, the arm 21 is supported substantially parallel to the surface S thereunder. Advantageously, both sloped surfaces and substantially flat surfaces can be processed, in this way.

The arm 21 is then retracted (controlled by the controller 4 controlling the actuators A of the arm 21) with the concrete surface preparation apparatus 3 being pulled across the uncured concrete surface. When the extension of the arm 21 reaches a first threshold, sensor data from the one or more sensor 25 is sent to the controller 4. On receipt of sensor data indicating that the first threshold has been reached or exceeded the controller 4 causes the actuator(s) A of the support apparatus 24 to move the support apparatus 24 from the deployed to the stowed condition.

The arm 21 is then lifted again by the vehicle 1, as previously described. The arm 21 is then manually rotated relative to the vehicle 1 (e.g. in a side-to-side direction relative to the vehicle 1), via the rotation apparatus 23, into a second angle relative to the vehicle 1. The support apparatus 24 is moved from the stowed to the deployed condition. This movement may occur prior to, at least partially simultaneously with or subsequent to lowering of the to arm 21 to the surface S to be processed. The above steps are then repeated.

As can be seen in Figures 4 and 5, by repeating the above process multiple times a wide area AR (denoted by the dashed lines) can be processed without having to move the vehicle 1. The area which can be processed is generally semi-circular, in this embodiment. The total angle 13 by which the arm 21 can be rotated relative to the vehicle 1 is shown in Figures 4 and 5.

Although the above use of the vehicle 1 and accessory 2 is described with respect to levelling uncured concrete it will be appreciated that the invention is not limited to this process. Additionally or alternatively, the vehicle 1 and accessory 2 may be used to spread topping material over a surface (e.g. a concrete surface) or other surface forming or finishing processes.

It will be appreciated that in embodiments, additionally or alternatively, the arm 21 may be raised and lowered relative to the ground by the vehicle 1 moving the entire accessory 2 vertically (e.g. lifting or lowering the connection apparatus 22).

The actuators A of the accessory 2 (and actuators of the concrete surface preparation apparatus 3) are powered via the vehicle 1, in this embodiment. That is to say, electric, pneumatic or hydraulic power is provided from the vehicle 1 to the actuators A of the accessory 2 (and actuators of the concrete surface preparation apparatus 3). In embodiments, however, this need not be the case.

Referring now to Figures 6 to 8, there is shown an alternative vehicle 11 having an alternative accessory 12 for concrete surface preparation according to an embodiment of the invention attached to it. A concrete surface preparation apparatus 3 as described with respect to Figures 1 to 3 is attached to the accessory 12. A stand-alone controller 4 as described above with respect to Figures 1 to 3 for operating the accessory 12 independently of the vehicle 11 is also provided.

The vehicle 11 shown in Figures 6 to 8 is a crawler loader (e.g. it uses a track for locomotion rather than wheels as in the wheel loader shown in Figures 1 to 3).

The accessory 12 shown in Figures 6 to 8 differs from that shown in Figures 1 to 3 in that io the support apparatus 124 is different. The support apparatus 124 shown in Figures 6 to 8 comprises a single leg. The leg is configured to be pivotable relatively to the arm. The leg is positioned underneath the arm, in use. The actuator A is configured to cause the leg to rotate relative to the arm. The actuator A is configured to cause the leg to rotate relative to the arm between a deployed position or condition in which the leg contacts the surface under the arm (see Figures 7 and 8) and a stowed position or condition in which the leg is not in contact with the surface under the arm (see Figure 6). The actuator A is a piston in this embodiment. Relative rotation of the leg is also used to adjust the relative angle of the arm with respect to the surface thereunder, e.g. in order to achieve or maintain the arm being substantially perpendicular to the surface thereunder (as described above).

It will be appreciated by one skilled in the art that the accessory 12 shown in Figures 6 to 8 can be used with different types of vehicles (e.g. as described herein with respect to the Figures or otherwise) and/or different types of concrete surface preparation apparatus 3.

Referring now to Figure 9, there is shown an alternative vehicle 101 having the accessory 12 shown in Figures 6 to 8 attached to it. A concrete surface preparation apparatus 3 is attached to the accessory 12. A stand-alone controller 4 for operating the accessory 12 independently of the vehicle 101 is also provided. The vehicle 101 shown in Figure 9 is a rigid wheel loader. A rigid wheel loader can be used with any of the accessories described herein.

Referring now to Figures 10 and 11, there is shown an alternative vehicle 201 having the accessory 2 shown in Figures 1 to 3 attached to it. A concrete surface preparation apparatus 3 is attached to the accessory 2. A stand-alone controller 4 for operating the accessory 2 independently of the vehicle 201 is also provided. The vehicle 201 shown in Figures 10 and 11 is an articulated wheel loader.

The vehicle 201 shown in Figures 10 and 11 comprises a hinge along its length. There is thus provided a first vehicle 201a to which the accessory 2 is connected and a second vehicle 201b to which the first vehicle 201a is connected.

As can be seen in Figure 11, use of this vehicle 201 arrangement allows a relatively greater range of motion of the accessory 2 and the concrete surface preparation apparatus 3 than io can be achieved using a single vehicle (e.g. the vehicle 1 shown in Figures 1 to 3). In this way a relatively greater area AR of concrete surface can be prepared without having to move the second vehicle 201b. As will be apparent, the articulated wheel loader can be used with any of the accessories described herein.

It will be appreciated by those skilled in the art that several variations to the aforementioned embodiments are envisaged without departing from the scope of the invention.

For example, although the arms described above with respect to the Figures are explained as being manually rotated relative to the vehicle via the rotation apparatus, this need not be the case. Additionally or alternatively the rotation apparatus may comprise an actuator for causing or enabling rotation of the arm relative to the vehicle. The actuator may be electrically, hydraulically or pneumatically powered.

Additionally or alternatively, although a concrete surface preparation apparatus has been described herein it is envisaged that apparatus suitable for preparing and/or finishing other surfaces may be attached or attachable to the first end of the arm.

It will also be appreciated by those skilled in the art that any number of combinations of the aforementioned features and/or those shown in the appended drawings provide clear advantages over the prior art and are therefore within the scope of the invention described herein.

Claims

Claims 1 An accessory for concrete surface preparation, the accessory being arranged to be selectively connectable to a vehicle, the accessory comprising an arm having a first end for connection to a concrete surface preparation apparatus and a second end comprising connection means for selective connection to a vehicle, wherein the accessory comprises a rotation means configured to allow at least part of the arm to be rotated in a side-to-side manner relative to the vehicle to allow repositioning of the concrete surface preparation apparatus.
2. An accessory according to Claim 1, wherein the accessory further comprises a support means attached to the arm between the first and second ends thereof.
3 An accessory according to Claim 2, wherein the support means is arranged or arrangeable, in use, to contact a surface over which the arm extends in order to at least partially support the arm.
4 An accessory for concrete surface preparation, the accessory being arranged to be selectively connectable to a vehicle, the accessory comprising an arm having a first end for connection to a concrete surface preparation apparatus and a second end for connection to a vehicle, wherein the accessory comprises a support means attached to the arm between the first and second ends thereof, the support means being arranged or arrangeable, in use, to contact a surface over which the arm extends in order to at least partially support the arm.
5. An accessory according to Claim 2, 3 or 4, wherein the support means is attached to the arm nearer to the second end of the arm than the first end.
6 An accessory according to any of Claims 2 to 5, wherein the support means is configured to be moveable, in use, between a deployed position or condition in which the support means contacts the surface over which the arm extends and a stowed position or condition in which the support means does not contact the surface and/or vice versa.
7 An accessory according to Claim 6, wherein movement between the deployed and stowed positions or conditions comprises extension or retraction of at least a portion of the support means and/or comprises rotation of at least a portion of the support means relative to the arm.
8 An accessory according to Claim 6 or 7, wherein the support means is configured to be automatically moveable, in use, between the deployed and stowed positions or conditions and/or vice versa.
9 An accessory to Claim 6, 7 or 8, wherein the support means comprises an actuator for moving the support means between the deployed and stowed positions or conditions and/or vice versa.
10. An accessory according to any of Claims 2 to 10, wherein the support means comprises one or more legs.
11. An accessory according to Claim 4, wherein the second end of the arm comprises connection means for selective connection to a vehicle.
12. An accessory according to Claim 1, 2, 3 or 11, wherein the accessory comprises a rotation means configured to allow at least part of the arm to be rotated in a side-toside manner relative to the vehicle to allow repositioning of the concrete surface preparation apparatus.
13. An accessory according to Claim 1, 2, 3, 11 or 12, wherein the rotation means is configured to allow rotation relative to the vehicle over an angle of between 20 and 270 degrees.
14 An accessory according to any of Claims 1, 2, 3, 11, 12 or 13, wherein the rotation means comprises a pivot about which the arm is rotatable, in use.
15. An accessory according to any of Claims 1, 2, 3, 11, 12, 13, or 14, wherein the rotation means comprises an actuator for causing rotation of the arm relative to a vehicle to which it is attached.
16. An accessory according to any of Claims 1, 2, 3, 11, 12, 13 or 14, wherein the rotation means is positioned at or adjacent the second end of the arm.
17. An accessory according to any of Claims 1,2, 3, 11, 12, 13, 14, 15 or 16, wherein the connection means comprises a quick release mechanism.
18. An accessory according to any preceding Claim, wherein the arm is an extendable and/or retractable arm.
19. An accessory according to Claim 18, wherein the accessory comprises one or more sensors configured or arranged to detect an extent of extension of the arm.
20. A kit of parts comprising an accessory according to any preceding Claim and a concrete surface preparation apparatus.
21. A kit of parts according to Claim 20, wherein the concrete surface preparation apparatus is a screed head for levelling uncured concrete and/or a spreading apparatus for dispensing topping material.
22. A kit of parts according to Claim 20 or 21, comprising a stand-alone controller for controlling, in use, the operation of the arm, the rotation means, the support means and/or the concrete surface preparation apparatus attached thereto.
23 A kit of parts according to Claim 22 when dependent on Claim 19, wherein the stand-alone controller is configured to move the support means from the deployed position or condition to the stowed position or condition when sensor data from the one or more sensor detects that the extension of the extendable and/or retractable arm has reached a first threshold, for example is equal to or less than a first threshold.
24. A vehicle for preparing a concrete surface, the vehicle comprising an accessory according to any of Claims 1 to 19 or the vehicle comprising the kit of parts according to any of Claims 20 to 23 connected to it.
25. A vehicle for preparing a concrete surface according to Claim 24, wherein the arm is connected to the vehicle at a location which is at or adjacent the end or side of the vehicle.