Height adjustment device for a tool arrangement of a construction and / or industrial machine and tool arrangement of a construction and / or industrial machine with such a device

Abstract

Height adjustment device (10, 10') of a tool (1000) of a construction and / or utility machine, in particular a dozer blade of a grader, wherein the height adjustment device (10, 10') comprises the following: - a fastening unit (120) for attaching the height adjustment device (10, 10') to the tool (1000), in particular to a side surface (1100, 1100') of the tool (1000); - a substrate guide slide (160) designed to come into contact with a substrate and to perform a guiding function in the contact state; and - a height adjustment arrangement (100) which fixes the substrate guide carriage (160) to the fastening unit (120) in an adjustable manner, in particular releasably, in an at least substantially vertical direction (Z) relative to the fastening unit (120).

Description

Technical field

[0001] The present invention relates to a height adjustment device of a tool of a construction and / or utility machine, in particular a leveling blade of a grader, and to a tool arrangement of a construction and / or utility machine with such a device. State of the art

[0002] It is common practice in road construction to use graders to create level surfaces. These graders, also known as levelers, earth levelers, or road levelers, level the subsoil using a blade, also called a leveling blade.

[0003] A typical grader is known, for example, from the applicant's DE 20 2020 102 876 U1. This grader has a shield arranged on a support frame, the shield being characterized by having two obliquely oriented side parts and a straight central part connecting these side parts.

[0004] Road repairs and maintenance, on the other hand, are usually carried out using large asphalt paving machines. The costs associated with these machines are very high. Furthermore, they are often operated by external companies. A considerable amount of time passes before the work can be carried out; often months go by until the external company has a suitable machine and the personnel for the necessary work. During this waiting period, the road deteriorates, and the damage and traffic disruption increase. This, in turn, increases the costs and effort required for the repairs.

[0005] There is therefore a need to provide a device by which a tool of a construction and / or utility machine, e.g., in particular a leveling tool or grader, can be further developed so that this tool can repair, maintain, and / or fill in areas. The aim is to create a device that makes it possible to use a known grader for paving or filling a path with fill material, especially gravel. Description of the invention

[0006] The invention is therefore based on the objective of providing a device that eliminates the problems and disadvantages of the prior art described above. In particular, existing tools should be more versatile and adaptable.

[0007] This problem is solved overall by the subject matter of independent claim 1. Furthermore, the problem is solved by the subject matter of dependent claim 13. Further possible embodiments of the invention are specified in particular in the dependent claims.

[0008] A height adjustment device according to the invention for a tool of a construction and / or utility machine, in particular a leveling blade of a grader, is specified, wherein the height adjustment device comprises: a fastening unit for attaching the height adjustment device to the tool, in particular to a side surface of the tool, a substrate guide slide which is designed to come into contact with a substrate and to perform a guiding function in the contact state, and a height adjustment arrangement which fixes the substrate guide slide adjustably in an at least substantially vertical direction relative to the fastening unit, in particular releasably.

[0009] The advantages of the invention are obvious. The height adjustment device allows the relative distance between the mounting unit, which can be attached to or is attached to a tool, and the guide slide on the substrate, which comes into contact with the substrate, to be adjusted. This simultaneously allows the working height of the tool, as seen from the substrate, to be set to a predetermined desired working height, which is desirable for the intended purpose. This makes it possible to perform work at a different working height with a tool, which would not be possible without the height adjustment device according to the invention. In addition, the guide slide on the substrate provides guidance and stabilization of the tool for operating a tool equipped with the height adjustment device according to the invention.For example, a grader equipped with the height adjustment device according to the invention can also be used for asphalt paving, and / or for constructing and / or repairing paths, and / or for laying gravel paths. Furthermore, cycle paths and hiking trails, in particular, can also be constructed and / or repaired. This advantageously increases the range of applications and possibilities. A further advantage arises from the mounting unit, which is designed for attaching the height adjustment device to the tool. This enables uncomplicated and quick integration into existing tools, which has a positive effect on retrofitting and sustainability.

[0010] According to an advantageous embodiment of the height adjustment device, the height adjustment arrangement can comprise a height setting element and a height adjustment element that can be set or held in a predetermined position by means of the height setting element. Advantageously, this allows the relative distance along the at least substantially vertical direction to be set with particular precision.

[0011] In particular, the height adjustment element can be set or held in a predetermined position by means of the height adjustment element, thereby allowing the position of the base guide carriage relative to the mounting unit to be adjusted or locked. The height adjustment element can serve as an indicator of the set height.

[0012] According to an advantageous embodiment of the height adjustment device, the height adjustment element can be a rack and the height setting element a pinion, which is arranged to engage with the teeth of the rack and is detachably attached to the mounting unit. Advantageously, this also achieves the effect that the pinion engaging with the teeth of the rack can absorb forces and thus stabilize the height adjustment device. In particular, forces generated during the use of the tool equipped with the height adjustment device can be absorbed easily and reliably without changing the set working height. This advantageously leads to particularly good results during application.

[0013] According to an advantageous embodiment of the height adjustment device, the height adjustment element can have at least one guide recess, preferably two guide recesses, wherein a fastening element is guided through the at least one guide recess and is connectable, in particular detachably, or attached to the fastening unit. Advantageously, this allows the height adjustment to be guided. Particularly when two guide recesses are arranged, tilting of the height adjustment device and, in particular, of the height adjustment element is prevented. This increases the accuracy of the working height setting on the one hand and, on the other hand, prevents downtime for potential repairs.

[0014] Preferably, the at least one guide recess can be designed as an elongated hole. This allows for simple and cost-effective manufacturing of the at least one guide recess.

[0015] In particular, the length of at least one guide recess can define the maximum adjustment length of the height adjustment element. Advantageously, this allows the height adjustment device to be adapted to various application scenarios. For example, the height adjustment element can be selected from a group of height adjustment elements, each with guide recesses of different lengths, so that a height adjustment element with a suitable guide recess length can be chosen according to the intended use. In other words, the height adjustment element is interchangeable, which advantageously increases the versatility of its applications.

[0016] Furthermore, the height adjustment element can be guided and displaced along the at least substantially vertical direction by means of the at least one guide recess and the fastening element. This prevents the height adjustment element from tilting or twisting relative to the fastening unit.

[0017] According to an advantageous embodiment of the height adjustment device, the mounting unit can be attached to the tool via a multitude of screw-nut connections, in particular four screw-nut connections. This ensures a secure and firm connection on the one hand and easy detachability and replaceability on the other. This allows for quick and easy maintenance, repairs, or the replacement of individual elements of the height adjustment device. Existing tools can also be easily retrofitted with the height adjustment device.

[0018] In particular, the mounting height of the fastening unit on the tool and the length of at least one guide recess allow for the adjustment of a predetermined or fixed maximum working height of the tool from the surface. For this purpose, several sets of through holes can also be arranged on the tool, especially on its side surface, designed to connect to the height adjustment device, so that the fastening unit of the height adjustment device can be mounted on the tool at different heights. Alternatively, instead of several sets of through holes, a set of elongated holes can also be arranged on the tool, especially on its side surface.

[0019] According to an advantageous embodiment of the height adjustment device, the height adjustment element can be detachably connected to the mounting unit via a guide and locking element. This connection is achieved through a central through-opening in the guide and locking element, through which a mounting element extends further via the at least one guide recess and is detachably attached to the mounting unit. In the fastened state, the guide and locking element additionally presses the height adjustment element against the mounting unit, thereby advantageously increasing the holding force that keeps the height adjustment device in the set position. This provides additional protection against unintentional adjustment, particularly during use of the tool connected to the height adjustment device.

[0020] According to an advantageous embodiment of the height adjustment device, the guide and locking element can further have two outer through-openings, through each of which a further fastening element is guided and detachably connected to the fastening unit, so that the height adjustment element is arranged between the two outer through-openings, in particular centrally between the two outer through-openings, and can be detachably fastened. This advantageously provides an additional guiding function for the height adjustment element connected by means of the guide and locking element, which advantageously prevents the height adjustment element from tilting or twisting.

[0021] According to an advantageous embodiment of the height adjustment device, the base guide carriage can have a first surface element that comes into contact with the base, which is at least substantially curved, such that the front and / or rear end of the first surface element is bent upwards in the longitudinal direction of the base guide carriage. Advantageously, this allows the surface of the base guide carriage that comes into contact with the base to be guided more effectively on the base and provides better protection against impacts and sudden collisions with unevenness in the base. This protects against jamming or "galling" of the base guide element upon contact with the base. As a result, the guiding function of the height adjustment device can be improved.Positioning the curved section at both ends of the first surface element advantageously allows the sliding and guiding properties of the height adjustment device to be achieved in both directions. In other words, a change of direction is possible without replacing or modifying the height adjustment device.

[0022] According to an advantageous embodiment of this height adjustment device, the base guide carriage has an L-shaped cross-section with a first surface element in contact with the base and a second surface element extending vertically upwards from the first surface element in at least a substantially vertical direction. Advantageously, this reduces the surface area in contact with the base and thus the friction between the base and the height adjustment device, without requiring a reduction in the surface area of ​​the base guide carriage, which is needed, for example, for connection to the height adjustment element. This improves the sliding and guiding properties of the height adjustment device.

[0023] According to an advantageous embodiment of the height adjustment device, a lower end of the height adjustment element can be detachably connected to a region of the base guide slide, preferably centrally located in the longitudinal direction of the base guide slide. This has the advantage that the forces to and from the tool can be transmitted and absorbed as symmetrically as possible by the height adjustment device. Furthermore, this allows for a change of direction during tool use.

[0024] In particular, the lower end of the height adjustment element can be detachably connected to the area of ​​one or the second surface element of the base guide slide, preferably centrally located in the longitudinal direction of the base guide slide, which extends vertically upwards from the first surface element in the at least substantially vertical direction Z. In other words, the connection of the height adjustment element to the base guide slide is realized via the second surface element of the base guide slide. Advantageously, this leaves the first surface element, and thus the sliding or guide surface of the base guide slide, unobstructed. This allows for secure fastening of the base guide slide and the height adjustment element, while simultaneously ensuring that the guiding and sliding properties of the base guide slide are not impaired.For example, the connection is realized using a screw-nut connection, which on the one hand provides a simple and secure connection, and on the other hand allows for easy replacement of the connected elements.

[0025] According to an advantageous embodiment of the height adjustment device, a side of the lower end of the height adjustment element facing the first surface element of the base guide carriage can be convex towards the first surface element. This allows the base guide carriage to have a certain amount of play and to rotate or move along the convex side of the height adjustment element. This allows, for example, impacts from uneven surfaces, such as stones, against which the base guide carriage strikes, to be better cushioned or absorbed without the base guide carriage becoming jammed or the height adjustment device being deformed.

[0026] According to an advantageous embodiment of the height adjustment device, the mounting unit can be designed at least substantially plate-shaped or planar. Advantageously, the outer contour can be designed at least substantially Z-shaped. In other words, recesses, particularly at least substantially triangular or trapezoidal ones, are arranged along the outer contour. This advantageously reduces the weight of the mounting unit and thus of the height adjustment device.

[0027] According to an advantageous embodiment of the height adjustment device, the fastening unit can have receiving openings for receiving and fastening elements. Thus, the remaining elements of the height adjustment device can advantageously be fixed directly or indirectly, i.e., via a further element, to the fastening unit, in particular detachably.

[0028] Preferably, the fasteners, when tightened, can terminate within the fastening unit or be flush with a side of the fastening unit facing the tool. In other words, even when tightened, the fasteners do not protrude from the side of the fastening unit facing the tool, thus facilitating assembly onto the tool. For example, no spacers or similar components need to be placed between the tool and the height adjustment device. This prevents dirt and moisture from accumulating in the gap between the tool and the height adjustment device, which would promote corrosion. This reduces maintenance, repair, and servicing work, thereby avoiding downtime.

[0029] According to an advantageous embodiment of the height adjustment device, the mounting unit can further have through-holes for receiving fasteners by means of which the mounting unit can be attached to or secured to the tool. In particular, the mounting unit can be attached to or secured to the tool via screw-nut connections. This allows for a simple and secure connection to the tool, which facilitates the replaceability of the height adjustment device as well as its repair and maintenance.

[0030] According to an advantageous embodiment of the height adjustment device, the height adjustment arrangement is designed to steplessly adjust the base guide slide in at least an essentially vertical direction relative to the mounting unit. Stepless adjustment, as defined in this application, means that the height or the relative distance between the mounting unit and the base guide slide can assume at least essentially any technically feasible value. In particular, stepless adjustment, as defined in this application, also includes adjustment by means of a height adjustment arrangement designed as a rack and pinion combination. This allows the working height to be set as desired and increases the tool's range of applications.

[0031] The problem underlying the present invention is further solved by a tool arrangement for a construction and / or utility machine, which comprises the following: a tool, in particular a grader blade, and two height adjustment devices as described above, wherein the height adjustment devices are attached to corresponding, opposing side surfaces of the tool, in particular the grader blade, so that the tool is located between the height adjustment devices, such that the ground guide slides of the height adjustment devices are adjustable or set to a predetermined position between a first position and a second position, in particular steplessly.wherein in the first position the surfaces of the substrate guide carriages that come into contact with the substrate are out of contact with the substrate, and in the second position the surfaces of the substrate guide carriages that come into contact with the substrate are in contact with the substrate and the tool occupies a maximum working height as seen from the substrate.

[0032] The advantages described in connection with the previously described height adjustment devices also apply to the tool arrangement, so they will not be described again. Advantageously, the working height of a tool arrangement equipped with two of the previously described height adjustment devices can be set to any desired position, specifically between a first position in which the surfaces of the base guide slides that come into contact with the base are out of contact with the base (i.e.,In the first position, the height adjustment elements are each shifted to a position where the surfaces of the base guide carriages that come into contact with the substrate are vertically positioned above the lower end of the tool (in the direction of the substrate). In a second position, the surfaces of the base guide carriages that come into contact with the substrate are in contact with the substrate, and the tool occupies its maximum working height relative to the substrate. This advantageously allows the working height of the tool to be adapted to the specific situation, enabling the tool to be used for additional applications that would not be possible without the adjustable working height. In other words, the height adjustment devices can also be adjusted to provide only a guiding function but, at least in essence, no change in the working height.This advantageously further increases operational flexibility and possibilities.

[0033] In particular, the substrate guide elements of the height adjustment devices are steplessly adjustable between the first position and the second position. For the purposes of this application, stepless adjustment means that the height or the relative distance between the mounting unit and the substrate guide slide can assume at least substantially any technically possible value. In particular, stepless adjustment for the purposes of this application also includes adjustment by means of a height adjustment arrangement designed as a rack and pinion combination.

[0034] According to an advantageous embodiment of the tool arrangement, the maximum working height of the tool can be a distance of at least 5 cm, in particular between 5 cm and 20 cm, preferably between 10 cm and 15 cm, and most preferably 10 cm. This advantageously allows the tool's application possibilities to be adapted to the respective situation.

[0035] According to an advantageous further development of the tool arrangement, the tool can be a leveling tool.

[0036] According to an advantageous further development of the tool arrangement, the tool can be a grader designed to repair roads with asphalt and / or to pour level layers of fill material, particularly 10 cm to 15 cm high, onto roads. This makes it possible to use known tools in situations and for purposes for which they were not originally intended. This advantageously increases their operational flexibility and range of applications. Brief description of the characters

[0037] The various and exemplary features described above can be combined with one another according to the invention, insofar as this is technically sensible and suitable. Further features, advantages, and embodiments of the invention will become apparent from the following description of exemplary embodiments and with reference to the figures.

[0038] The figures used to illustrate the exemplary embodiments show: Fig. 1 a schematic representation of a height adjustment device according to an embodiment of the invention; Fig. 2A a front view of a height adjustment device according to a further embodiment of the invention; Fig. 2B a side view of the height adjustment device Fig. 2A from direction X; Fig. 3 a front view of a grader having a height adjustment device on each side; and Fig. 4 a side view of the grader from Fig. 3. Ways to implement the invention

[0039] Fig. Figure 1 shows a height adjustment device 10 according to one embodiment in a schematic representation. The height adjustment device 10 comprises a mounting unit 120, a height adjustment arrangement 100, and a base guide slide 160.

[0040] The substrate guide slide 160 is designed to come into contact with a substrate and to perform a guiding function in the contact state. The substrate guide slide 160 can have a first surface element 161, which is designed to come into contact with the substrate. A second surface element 162 can extend perpendicularly from the first surface element 161 in a substantially vertical direction Z.

[0041] In the following, the terms vertical center axis of the height adjustment device 10, 10' and vertical direction Z or Z-direction are used synonymously. In other words, symmetrical to the Z-direction means symmetrical to the vertical center axis. The vertical center axis of the height adjustment device 10, 10' is in Fig. 1 and Fig. 2A is indicated by the dashed line.

[0042] As in Fig. As shown in Figure 1, the first surface element 161 can have a correspondingly upwardly curved area, i.e., bent vertically away from the substrate, at both its front end (i.e., in the X direction) and its rear end (i.e., in the vertical direction Z). The shape of the second surface element 162 follows the shape of the first surface element 161, such that the second surface element 162 has corresponding cut-out areas at the location of the upwardly curved areas of the first surface element 161.

[0043] The height adjustment arrangement 100 can be arranged and, in particular, detachably connected to the second surface element 162 of the substrate guide carriage 160, in particular to a central area of ​​the second surface element 162.

[0044] The height adjustment arrangement 100 is arranged between the substrate guide carriage 160 and the fastening unit 120 such that it fixes the substrate guide carriage 160 to the fastening unit 120 in an adjustable manner in the at least substantially vertical direction Z relative to the fastening unit 120.

[0045] The height adjustment arrangement 100 can comprise a height adjustment element 110 and a height setting element 130. The height adjustment element 110 is fixed, particularly detachably, at a first end region to the base guide carriage 160. The first end region can have a greater extension in the X-direction than the remaining area of ​​the height adjustment element 110. In other words, the height adjustment element 110 has at least substantially the shape of an inverted "T". The side of the first end region facing the first surface element 161 of the base guide carriage 160 can have a convex curvature extending in the direction of the first surface element 161. This allows the first surface element 161 to roll during use, thus preventing it from jamming.

[0046] The first end region of the height adjustment element 110 can be fixed between a stabilizing element 150 and the second surface element 162 of the base guide carriage 160, in particular a region of the second surface element 162 that is central in its longitudinal direction, by means of a screw-nut connection. The stabilizing element 150 is a polyhedron with a base surface that is at least substantially triangular. One surface rests at least substantially flat on the first surface element 161, and a side surface formed perpendicular to this surface contacts the height adjustment element 110.This leads, on the one hand, to a stabilization of the height adjustment device 10 and a better absorption and distribution of forces, and on the other hand, a certain amount of play is created between the substrate guide slide 160 and the height adjustment element 110, so that unevenness in the substrate can be better compensated for and absorbed.

[0047] Fig. Figure 1 further shows that the height adjustment element 110 has a first guide recess 111' and a second guide recess 111" arranged below the first guide recess 111' in the at least substantially vertical direction Z. The first and second guide recesses 111' and 111" shown are designed as elongated slots. However, other contours are also conceivable. It is also conceivable, in principle, to arrange only one guide recess 111".

[0048] The height adjustment element 110 also has a toothed section on one side. In other words, the height adjustment element 110 is designed, at least essentially, as a rack and pinion on one side.

[0049] As in Fig. As shown in Figure 1, the height adjustment arrangement 100 also includes a height adjustment element 130.

[0050] The height adjustment element 130 shown is designed as a pinion and is configured to engage with the teeth of the height adjustment element 110. This provides stabilization and ensures good force absorption and distribution. Particularly during adjustment, the pinion can be disengaged, allowing its rotation around its own axis. In this engagement, the pinion stabilizes the movement of the height adjustment element 110, or the rack.

[0051] In principle, other height adjustment arrangements 100 are also conceivable, which can fix the base guide slide 160 to the mounting unit in an adjustable manner relative to the mounting unit 120.

[0052] Fig. Figure 1 further shows a guide and locking element 140. The guide and locking element 140 is designed as a polyhedron with one side forming an at least substantially flat triangle. The guide and locking element 140 has through holes at its three corner regions, with the outer through holes being arranged symmetrically to the third central through hole.

[0053] The height adjustment element 110, the height setting element 130, and the guide and locking element 140 are detachably fixed to the mounting unit 120. In particular, the height adjustment element 110, the height setting element 130, and the guide and locking element 140 can be fixed to the mounting unit 120 by means of screw connections.

[0054] The fastening unit 120 itself is designed to be fixed to a tool 1000 and, in particular, to a side surface 1100, 1100' of the tool 1000. Fig. 1 This is shown via four screw heads indicated at the corners of the fastening unit 120.

[0055] The fastening unit 120 is shaped at least substantially like a polyhedron, which has substantially triangular recesses on two opposite sides in plan view, so that the fastening unit 120 has at least a substantially "Z"-shaped contour or an hourglass-shaped contour in plan view. This allows weight to be saved and the height adjustment device 10 to be built lighter overall.

[0056] The connections of the in Fig. The elements shown in 1 are related to the embodiment in Fig. 2A and Fig. 2B described in more detail, which also refers to the height adjustment device 10 in Fig. 1 is applicable accordingly.

[0057] Fig. Figure 2A shows a height adjustment device 10' according to a further embodiment. The height adjustment device 10' is, in comparison to the height adjustment device 10, made of Fig. 1. The height adjustment element 110 is designed in a mirror-image fashion. That is, the height adjustment element 110 is mirrored about the vertical direction Z, and the height adjustment element 130, designed as a pinion, is arranged accordingly on the other side to engage with the teeth of the height adjustment element 110. The fastening unit 120 is also mirrored accordingly about the Z direction.

[0058] In other words, at least essentially the same elements can be used for the height adjustment device 10' as for the height adjustment device 10, except that the height adjustment element 110 and the fastening unit 120 must be turned 180° and the height adjustment element 130 must be positioned accordingly.

[0059] The in connection with Fig. The elements described in section 1 are also in Fig. 2A is shown and further description refers to the corresponding figure description. Fig. 1 referred.

[0060] Fig. Figure 2A shows fastening elements 170. The fastening elements 170 secure the fastening unit 120 to the tool 1000. In particular, four fastening elements 170 are shown, which are arranged symmetrically to the Z-direction. The fastening elements 170 are received in corresponding through holes of the fastening unit 120 and are designed to be fixed to the tool 1000 and in particular to a side surface 1100, 1100' of the tool 1000.

[0061] Furthermore, in Fig. Figure 2A shows a fastening element 170' which extends through the first guide recess 111' and is designed to be fixed to the fastening unit 120. In other words, the fastening element 170' is designed to fix the height adjustment element 110 to the fastening unit 120 via the guide recess 111'.

[0062] Three fastening elements 170'' are also shown, which extend through the guide and locking element 140 and are designed to be fixed to the fastening unit 120. As shown in Fig. As can be seen in 2A, the height adjustment element 110 is located between, in particular centrally between, the two outer fastening elements 170'' and the middle fastening element 170'' extends through the second guide recess 111'.

[0063] The height adjustment element 110 is thus fixed to the mounting unit 120 via the fastening element 170' and the fastening elements 170'' by means of the guide and locking element 140. The two outer fastening elements 170'' are also designed to prevent the height adjustment element 110 from tilting or twisting during height adjustment.

[0064] When the connections are loosened, the fastening elements 170', 170'' and the guide and locking element 140 can guide the displacement of the height adjustment element 110 accordingly and protect it against tilting.

[0065] Furthermore, in Fig. 2A shows a fastening element 170''' which extends through the height adjustment element 130 and fixes the height adjustment element 130 to the fastening unit 120.

[0066] Furthermore, in Fig. 2A a fastening element 170'''' shown, which extends through the stabilizing element 150, the first end region of the height adjustment element 110 and the base guide slide 160, in particular the second surface element 162 of the base guide slide 160, and is designed to fix the stabilizing element 150, the first end region of the height adjustment element 110 and the base guide slide 160 to each other.

[0067] In Fig. 2A the height adjustment device 10' is in a different position than in Fig. Figure 1 shows the following. In other words, the base guide slide 160 of the height adjustment device 10 is located in Fig. 1 at a different position in the Z-direction relative to the mounting unit 120 in Fig. 1 as the base guide slide 160 of the height adjustment device 10' in Fig. 2A relative to the mounting unit 120 in Fig. 2A.

[0068] Fig. 2B shows the height adjustment device 10' from Fig. 2A from the in Fig. 2A in the direction X.

[0069] From the view in Fig. 2B shows that the fastening elements 170', 170'', and 170''' are fixed to the fastening unit 120 such that they are located on a side of the fastening unit 120 facing the tool 1000, i.e. in Fig. 2B The left side surface of the fastening unit 120 does not protrude and thus terminates within the fastening unit 120 or is flush with the side of the fastening unit 120 facing the tool 1000. The corresponding receiving openings formed in the fastening unit 120 are designed to receive and fasten the fastening elements 170', 170'', 170'''. In particular, the receiving openings in the fastening unit 120 can be designed as threaded bores and the fastening elements 170', 170'', 170''' as corresponding screws with a length adapted to the respective connection. In other words, as in Fig. As indicated in 2B, the fastening elements 170'', which fix the guide and locking element 140 and the height adjustment element 110 to the fastening unit 120, are longer than the fastening element 170', which only fixes the height adjustment element 110 to the fastening unit 120.

[0070] Furthermore, it is evident that the fastening elements 170, which fix the fastening unit 120 to the tool 1000, are also designed to extend through the tool 1000 and to fix the tool 1000 to the fastening unit 120 by tightening a nut on the corresponding fastening element 170. A washer can optionally be arranged between the nut and the tool 1000.

[0071] The connection between the base guide carriage 160, the height adjustment element 110, and the stabilizing element 150 is also achieved by screwing a nut onto the fastening element 170''''. A washer can optionally be placed between the stabilizing element 150 and the nut.

[0072] Fig. 3 and Fig. Figure 4 shows a tool arrangement and in particular a leveling tool or grader 1000. A grader 1000 generally has a shield arranged on a support frame, the shield being characterized by having two obliquely extending side parts and a straight central part connecting these side parts.

[0073] An in Fig. On each of the four more easily identifiable side surfaces 1100, 1100' of the grader 1000, a height adjustment device 10, 10' as described above is arranged. By means of the two height adjustment devices 10, 10', the working height of the grader 1000 can be set to different positions between a first position in which the ground guide slides 160 of the height adjustment devices 10, 10' are out of contact with the ground, i.e., in the Z-direction above the lower end of the blade of the grader 1000, and a second position in which the ground guide slides are in contact with the ground and raise the lower end of the blade of the grader 1000 to a maximum working height.

[0074] The maximum working height can be specified by the length of the at least one guide recess 111', 111'' and the mounting height of the fastening unit 120 on the side surface 1100, 1100'' of the grader 1000. For example, the maximum working height can be at least 5 cm, for example 5 cm to 20 cm, 10 cm to 15 cm or 10 cm.

[0075] Advantageously, the Grader 1000 can also be used for creating and filling gravel paths and for asphalt paving.

[0076] To adjust the desired working height, the fastening elements 170', 170'' and 170'''' of the height adjustment devices 10, 10' are loosened or removed, the height adjustment elements 110 are moved to the desired position, and the fastening elements 170', 170'' and 170''' are tightened again. The height adjustment elements 130 simultaneously serve as an indicator for the height setting and for improved force absorption and distribution.

[0077] Fasteners 170 and 170'''' only need to be loosened when necessary, e.g. for replacement or repairs.

[0078] The fixing of the fastening unit 120 by means of a screw-nut connection using the fastening elements 170 can be easily retrofitted to existing systems or tools 1000. This increases sustainability, as existing tools can continue to be used and the height adjustment device 10, 10' according to the invention can be easily integrated.

[0079] Even if in Fig. 3 and Fig.Although the tool is depicted and described as a grader, it could also be another type of leveling tool. It is also conceivable to attach the height adjustment device 10 to tools not described in section 4 that require different working heights. For example, the height adjustment device could also be used with seeding and harvesting machines.

[0080] It should be noted that the features of the invention described with reference to individual embodiments or variants, such as the type and design of the individual components as well as their precise dimensions and spatial arrangement, may also be present in other embodiments, unless otherwise specified or is precluded for technical reasons. Furthermore, not all features of such combined features of individual embodiments need necessarily be implemented in a given embodiment. Reference symbol list 10, 10' Height adjustment device 100 Height adjustment arrangement 110 Height adjustment element 111', 111'' guide recess 120 fastening unit 130 Height adjustment element 140 guide and locking element 150 stabilizing element 160 underground guide carriages 161 first surface element that comes into contact with the substrate 162 second surface element extending upwards away from the surface 170-170'''' Fasteners 1000 (leveling) tools or graders 1100, 1100' side surface of the tool QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] DE 20 2020 102 876 U1

[0003]

Claims

[1] Height adjustment device (10, 10') of a tool (1000) of a construction and / or utility machine, in particular a dozer blade of a grader, wherein the height adjustment device (10, 10') comprises the following: - a fastening unit (120) for attaching the height adjustment device (10, 10') to the tool (1000), in particular to a side surface (1100, 1100') of the tool (1000); - a substrate guide slide (160) designed to come into contact with a substrate and to perform a guiding function in the contact state; and - a height adjustment arrangement (100) which fixes the substrate guide carriage (160) to the fastening unit (120) in an adjustable manner, in particular releasably, in an at least substantially vertical direction (Z) relative to the fastening unit (120). [2] Height adjustment device (10, 10') according to claim 1, wherein the height adjustment arrangement (100) comprises a height adjustment element (130) and a height adjustment element (110) which can be adjusted or set or held in a predetermined position by means of the height adjustment element (130). [3] Height adjustment device (10, 10') according to claim 2, wherein the height adjustment element (110) is a rack and the height adjustment element (130) is a pinion which is arranged to engage in a toothing of the rack and is detachably attached to the fastening unit (120). [4] Height adjustment device (10, 10') according to claim 2 or 3, wherein the height adjustment element (110) has at least one guide recess (111', 111''), preferably two guide recesses (111', 111''), wherein a fastening element (170'') is guided through the at least one guide recess (111', 111''), which is connectable or connected to the fastening unit (120), in particular detachably. [5] Height adjustment device (10, 10') according to claim 4, wherein the height adjustment element (110) is detachably connected to the fastening unit (120) via a guide and locking element (140) by means of a central through-opening in the guide and locking element (140), through which a fastening element (170'') extends further through the at least one guide recess (111') and is detachably attached to the fastening unit (120). [6] Height adjustment device (10, 10') according to claim 5, wherein the guide and locking element (140) further has two outer through-openings through which a further fastening element (170'') is guided and detachably connected to the fastening unit (120), so that the height adjustment element (110) is arranged between the two outer through-openings, in particular centrally between the two outer through-openings, and can be detachably fastened. [7] Height adjustment device (10, 10') according to one of the preceding claims, wherein the substrate guide slide (160) has a first surface element (161) that comes into contact with the substrate and is at least substantially curved in shape, such that the front and / or rear end of the first surface element (161) in the longitudinal direction of the substrate guide slide (160) is / are bent upwards. [8] Height adjustment device (10, 19') according to one of the preceding claims, wherein a lower end of the height adjustment element (110) is detachably connected to a region of the substrate guide slide (160) that is preferably central in the longitudinal direction of the substrate guide slide (160). [9] Height adjustment device (10, 10') according to claim 8 in conjunction with claim 7, wherein a side of the lower end of the height adjustment element (110) facing the first surface element (161) of the base guide slide (160) is convex towards the first surface element (161). [10] Height adjustment device (10, 10') according to one of the preceding claims, wherein the fastening unit (120) has receiving openings for receiving and fastening elements (170', 170'', 170'''', 170'''') which, in the fastened state, end within the fastening unit (120) or are flush with a side of the fastening unit (120) facing the tool (1000). [11] Height adjustment device (10, 10') according to one of the preceding claims, wherein the fastening unit (120) further comprises through openings for receiving fastening elements (170) by means of which the fastening unit (120) can be attached or fastened to the tool (1000). [12] Height adjustment device (10, 10') according to one of the preceding claims, wherein the height adjustment arrangement (100) is configured to continuously adjust the substrate guide slide (160) in the at least substantially vertical direction (Z) relative to the fastening unit (120). [13] Tool arrangement for a construction and / or utility machine, comprising the following: - a tool (1000), in particular a grader; and - two height adjustment devices (10, 10') according to one of the preceding claims, wherein the height adjustment devices (10, 10') are attached to corresponding opposing side surfaces (1100, 1100') of the tool (1000), such that the tool (1000) is located between the height adjustment devices (10, 10') in such a way that the base guide slides (160) of the height adjustment devices (10, 10') are adjustable or set to a predetermined position between a first position and a second position, wherein in the first position the surfaces of the base guide slides (160) that come into contact with the base are out of contact with the base and in the second position the surfaces of the base guide slides (160) that come into contact with the base are in contact with the base and the tool (1000) assumes a maximum working height as seen from the base. [14] Tool arrangement according to claim 13, wherein the maximum working height of the tool is a distance of at least 5 cm, in particular between 5 cm and 20 cm, preferably between 10 cm and 15 cm, particularly preferably 10 cm. [15] Tool arrangement according to claim 13 or 14, wherein the tool (1000) is a leveling tool. [16] Tool arrangement according to claim 13 or 14, wherein the tool (1000) is a grader designed to repair roads with asphalt and / or to pour level layers of fill material, in particular 10 cm to 15 cm high, onto roads.

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