Supply belt, in particular for earthmoving machine

Abstract

The invention relates to a supply belt, in particular for an earthmoving machine, having at least two supply lines, which are arranged next to one another, forming a strip-shaped line arrangement, the diameter of the supply lines not exceeding a maximum line diameter; two lateral guide strings, one of which extends along each edge side of the line assembly and each of which consists of dimensionally stable segments, the segments being positioned one above the other when the supply tape is wound, the height of the segments being greater than the maximum line diameter by a defined amount of protrusion to protect the supply line; and transverse strips arranged separately along the supply tape and extending transversely to the tape longitudinal direction from the connection section of the first lateral guide string to the opposite connection section of the second lateral guide string and connecting them to each other. According to the invention, it is provided that the height of the connecting section is equal to the height of the other sections of the guide string, and that the transverse strip protrudes in the region of the line component of the supply line by a defined amount relative to the height of the connecting section.

Description

Technical Field

[0001] The invention relates to a supply belt, in particular for earth-moving machinery, according to the preamble of claim 1, comprising: at least two supply lines, which are arranged next to each other to form a belt-like line assembly, wherein the diameter of the supply lines does not exceed a maximum line diameter LD; two lateral guide strings, one of which extends along each edge side of the line assembly and each of which consists of dimensionally stable sections, which are arranged one above the other when the supply belt is wound up, wherein the height of the sections is greater than the maximum line diameter LD by a defined projection in order to protect the supply lines; and transverse strips, which are arranged individually along the supply belt and extend transversely to the longitudinal direction of the belt from a connecting section of a first lateral guide string to an opposite connecting section of a second lateral guide string and connect them to each other. Background Art

[0002] For example, a universal supply belt for earth-moving machinery is disclosed in EP1826456 A1. The supply belt has several supply lines arranged next to each other, which form a belt-shaped line assembly. A guide string is arranged along each edge side of the line assembly, which is constructed in the type of a chain by dimensionally stable sections. In order to protect the supply line, the height of the section is greater than the maximum line diameter of the supply line by a defined protrusion. This prevents the supply line from being damaged when the supply belt is rolled up, because the layers wound up one above the other rest on one another in the area of ​​the larger lateral guide string, so that the main forces can be absorbed in the radial direction by the dimensionally stable sections of the lateral guide string. The height of the section determines the height of the supply belt and is also called the system height.

[0003] In addition, a transverse strip is separately provided along the supply belt, which extends transversely to the belt longitudinal direction from a section of the first lateral guide string to the opposite section of the second lateral guide string and connects these sections to each other. The section connected to the transverse strip can be referred to as a connecting section. The transverse strip holds adjacent supply units in place and can also fix them in place. The transverse strip can also connect the supply strip to the lateral guide string, thus providing strain relief for the supply line.

[0004] For this purpose, the transverse strips must be constructed with sufficient mechanical strength. In order to make the supply belt as light as possible, the transverse strips can be made of light metals such as aluminum alloys instead of steel. Due to the limited strength of light metals, the transverse strips must be constructed with relatively large wall thicknesses to prevent bending or breaking, which leads to an increase in the lateral sections and thus an increase in the height of the supply belt. The higher the height of the supply belt, the shorter the length of belt that can be wound or taken up onto the belt reel with the maximum reel diameter. Summary of the invention

[0005] The object underlying the present invention is to provide a supply belt, in particular for an earth-moving machine, which on the one hand has a high stability and on the other hand can be rolled up in a particularly compact manner.

[0006] The object of the invention is achieved by means of a supply belt having the features of claim 1. Preferred embodiments of the invention are specified in the dependent claims.

[0007] The supply belt according to the invention is characterized in that the height of the connecting section is equal to the height of the other sections of the guide string and that the transverse strips in the region of the line components of the supply line protrude by a defined protrusion relative to the height of the connecting section.

[0008] The basic idea of ​​the invention is that the transverse strip in the area of ​​the line assembly of the supply line protrudes by a defined protrusion relative to the height of the adjacent connecting section. The connecting section has the same height as the other sections that are not connected to the transverse strip. The total height of the supply belt is determined by the height of the sections plus the defined protrusion of the transverse strip. However, when winding the supply belt, the height of the winding is determined only by the height of the sections. The protrusion of the transverse strip can extend into the area of ​​the line assembly with the supply line, the maximum diameter of which is smaller than the height of the sections. Therefore, the protrusion can utilize this existing free space on the transverse strip.

[0009] As a result, the transverse strips can be produced with sufficient material thickness and strength without having a negative impact on the height and amount of winding when the supply tape is wound onto the reel. This allows larger lengths of supply tape to be wound onto existing hose reels or tape reels. Alternatively, the transport diameter of the reel can be reduced while the length of the supply tape remains the same, which in some cases means that expensive special transport can be avoided.

[0010] Furthermore, the more compact arrangement results in a lower torque required for winding and unwinding due to the shorter lever and lower weight during operation. In addition, material and manufacturing costs are saved for the construction of the supply belt.

[0011] According to a further development of the invention, it is particularly preferred that the defined protrusion of the transverse strip in the area of ​​the line assembly is equal to or smaller in value than the defined protrusion of the section of the guide string relative to the supply line. This prevents the supply line from being damaged in the line assembly due to the protrusion of the transverse strip, thereby protecting the line.

[0012] In principle, the transverse strips can be constructed in such a way that they protrude only to one side relative to the block section, or be constructed asymmetrically. According to a further development of the invention, it is particularly advantageous if the transverse strips protrude by a defined protrusion relative to the height of the connecting section on both sides in the region of the line assembly of the supply line. In this way, the free space available on the supply belt during winding can be used particularly effectively for the formation of the transverse strips. The sum of the protrusions protruding on both sides should preferably be equal to or smaller in value than the defined protrusion of the section of the guide string relative to the supply line.

[0013] According to another embodiment of the invention, it is preferred that the transverse strips are configured in a frame-like manner with passages spaced apart from one another for receiving and holding the supply lines. In particular, these passages are adapted to the outer diameter of the respective supply lines. The supply lines extend through the passages and are thus held in position relative to one another. The transverse strips are attached to the guide sections or are formed integrally with them, so that the guide strings are also held in position relative to one another and the supply lines as a whole are also held in the desired shape and arrangement.

[0014] Another advantageous embodiment of the invention is that the transverse strips are provided with fastening means, in particular line clamps, which are configured for fixing the supply lines to the transverse strips. By additionally fixing the supply lines directly to the transverse strips, strain relief of the individual supply lines can be achieved. Tensile loads can be absorbed via the transverse strips and the guide strings and preferably via existing tension cables or suspension cables along the supply belt. The tension cables or suspension cables can extend through the channels in the guide sections. This also prevents undesired contraction of the supply lines during winding. Overall, protection and a particularly long life can thereby be achieved.

[0015] In general, the supply lines can be constructed in any suitable form. According to a variant of the invention, it is preferred that the supply lines are constructed as hose lines for conducting liquids or gases, energy lines and / or data lines. The hose lines can be configured in particular for conducting hydraulic fluids, compressed air, cooling fluids, drilling slurries or cutting slurries, or also for conducting slurries with removed soil material. In particular, the power lines can be metal cables for conducting electric current, wherein the cables are provided with suitable insulation. The data lines can also be metal lines or, for example, optical fiber lines. These lines can also be arranged in combination with each other on the supply belt, so that, for example, civil engineering machinery can be effectively supplied with fluids, energy and data via the supply belt.

[0016] According to one embodiment of the invention, it is particularly advantageous to wind the supply tape onto the tape reel in which the windings of the lateral guide strings are arranged one above the other in the wound state. The guide strings are formed in a chain-like manner from segments of essentially identical construction. The segments, which are formed in a dimensionally stable manner from metal or plastic, can be held on at least one tension cable or suspension cable, which extends along the guide strings through one or more passages on the individual segments.

[0017] Tongue- and groove-like elements can be formed on the segments in a manner known per se, by means of which the segments interlock and are held flexibly relative to each other, making it possible to wind up onto a belt reel. The belt reel can be arranged on a fixed base frame or a mobile carrier of the earth-moving machine and can be rotatably mounted. Preferably, the belt reel can be rotationally driven via at least one reel drive, making it possible to actively wind up and unwind the supply belt with the belt reel.

[0018] The transverse strips can be arranged at a distance from each other at any point on the supply belt, between two connecting sections that are opposite each other in the transverse direction. According to one embodiment of the invention, it is advantageous for particularly compact winding that the transverse strips are spaced apart from each other along the supply belt in the longitudinal direction of the belt in such a way that they are not placed directly above each other in the wound-up state. Such a distributed arrangement of the transverse strips along the supply belt prevents two transverse strips from being directly opposite each other and touching each other when the supply belt is wound up. In contrast, dimensionally stable transverse strips are arranged in such a way that they are not directly opposite each other and touching each other when the supply belt is wound on adjacent windings. This allows the transverse strips to effectively utilize the free space on the line layout.

[0019] In principle, the individual segments can be connected to each other in any suitable manner to form a guide string. According to one embodiment of the invention, it is particularly useful that at least one steel cable or suspension cable extends along each guide string, which steel cable or suspension cable extends within the segments. The segments each have a passage through which the steel cable or suspension cable extends. Thus, the segments are held in position to form a guide string and at the same time strain relief can be achieved via the cables.

[0020] The invention also relates to an earth-moving machine, characterized in that at least one supply belt according to the invention is arranged. The earth-moving machine may in particular be a trencher, a diaphragm wall grab, a drilling rig or another soil removal device which during operation has to be connected to several supply lines for the supply of fluids, gases, energy and / or data. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In the following, the present invention is described in more detail with reference to preferred embodiments schematically shown in the accompanying drawings. In the drawings: Figure 1 shows a schematic representation of a supply belt according to the invention; Figure 2 An enlarged detailed view showing a transverse strip for a supply belt according to the invention; Figure 3 Show Figure 2 A front view of a transverse strip; Figure 4 A schematic cross-sectional view showing a supply belt according to the invention with superimposed windings; Figure 5 The conventional supply belt not according to the present invention is shown corresponding to Figure 4 ; and Figure 6 A schematic side view of an earth-moving machine with a supply belt according to the invention is shown. DETAILED DESCRIPTION

[0022] Figure 1 A supply belt 10 according to the invention is shown, which has a total of seven supply lines 12, which are arranged next to each other and form a strip-shaped line assembly 14. A guide string 20 is arranged at each of the two edge sides of the line assembly 14, which is formed by a plurality of dimensionally stable segments 22 arranged in a row. According to the exemplary embodiment shown, the segments 22 can each include two cable passages 24, through which tension cables or suspension cables are guided. As a result, the individual segments 22 are arranged in a chain-like manner with a certain flexibility relative to each other to form the respective guide string 20.

[0023] Arranged individually along the supply belt 10 are transverse strips 30 which extend transversely to the belt longitudinal direction between two connecting sections 32 of the guide strings 20 .

[0024] Figure 2 and Figure 3 The structure of an individual transverse strip 30 is shown. The transverse strip 30 is bar-shaped, has a substantially rectangular cross section and a central strip section 34, to which connecting sections 32 are integrally connected, each of which is integrated in the lateral guide string 20. Passages 36 are provided in the strip section 34 according to the number and size of the supply lines 12 to be accommodated. In the region of the passages 36, fastening means, not shown, such as hose clamps, may be arranged in order to fasten the supply lines 12 to the transverse strip 30. This increases the stability of the supply belt 10 and also provides strain relief for the individual supply lines 12. The passages may be constructed identically or differently to accommodate different line sizes.

[0025] The diameter of the passage 36 is configured according to the maximum line diameter LD of the supply line 12 to be accommodated. In order to prevent the supply line 12 from being crushed when the supply belt 10 is rolled up or wound up, the guide string 20 having the section 22 or the section 32 is configured to have a height H that is greater than the maximum line diameter D of the supply line 12 by a defined amount or protrusion. In order to be able to reliably accommodate the passage 36 for the individual supply lines 12, the transverse strip 30 has a minimum wall thickness W in the central strip section 34 in the height direction relative to the passage 36 toward the outside, as shown in FIG. Figure 3 This results in an overall thickness G of the transverse strip 30 in the central strip section 34, wherein the overall thickness G is greater than the height H of the lateral connecting sections 32 of the transverse strip 30. Therefore, at the transition between the connecting section 32 and the central strip section 34, there is in each case a shoulder 40 with a projection V, as shown in FIG. Figure 3 Clearly shown in.

[0026] In accordance with Figure 2 and Figure 3 In the exemplary embodiment of the present invention, the shoulders 40 are formed toward the upper and lower sides of the transverse strip 30 so that the total thickness G of the central strip section 34 of the transverse strip 30 is calculated by the amount of the height H of the connecting section 32 plus twice the amount of the protrusion amount V on the shoulders 40. Therefore, the height H of the connecting section 32 is smaller than the total thickness of the transverse strip 30 in the region of the central strip section 34, wherein a stepped region is formed on the connecting section 32.

[0027] Advantages of embodiments according to the present invention can be found in particular in Figure 4 , which shows a cross section of a wound layer or winding 18 for forming a supply tape 10 according to the invention.

[0028] Due to the stepped area on the connecting section 32 of the transverse strip 30, the height of the winding is determined only by the height H of the section 22 or the connecting section 32. The protruding part of the material on the central strip section 34 can protrude into the adjacent free space of the adjacent winding 18. The free space of the adjacent winding 18 is formed by the defined protrusion of the height H of the section 22 or the connecting section 32 relative to the maximum line diameter D of the supply line 12.

[0029] The advantages achieved by the embodiment according to the invention are particularly evident compared to conventional supply belts which are constructed with a continuous transverse strip 30' without lateral offset portions, such as Figure 5 As shown in .

[0030] For example, a conventional supply belt of this type with a continuous transverse strip 30' may have a height H of 80 mm. This height H of the transverse strip 30' also determines the height of the other sections of the lateral guide string and thus the height of the individual windings. If such a supply belt is wound onto a belt reel with a hub diameter of typically 1450 mm and an outer diameter of typically 3550 mm, this height H of 80 mm results in a number of layers of possibly 13 layers and thus a winding capacity of 100 meters of the supply belt 10.

[0031] On the other hand, if a supply tape 10 according to the invention is provided in which a thickness reduction of only 2.5 mm is provided on both sides in the region of the connecting sections 32 on the transverse strips 30, this results in a height H of 75 mm for the sections 22 and the individual windings or layers. With the same tape reel design, a total of 14 layers can be wound up with the supply tape 10 according to the invention, with a total tape length of 109 meters.

[0032] On the other hand, if a step of 5 mm is provided on each side of the transverse strip 30 in the region of the connecting section 32 without reducing the strength of the transverse strip 30 in the central strip section 34, a number of 15 layers of the supply tape 10 according to the invention and therefore a maximum winding capacity of 117 meters can be achieved with the same arrangement of the tape reels.

[0033] The supply belt 10 according to the invention can therefore provide a significantly higher capacity for a supply belt 10 having a belt reel of the same design. As a result, a higher capacity and in particular a greater processing depth can be achieved, especially in the case of earth-moving machines, without the outer dimensions of the earth-moving machine being altered by the belt reel. Alternatively, a smaller reel diameter and thus a smaller transport size can be achieved with a given line length.

[0034] Figure 6 An example of an earth-moving machine 50 is shown, which is configured with a mobile carrier 52. The mobile carrier 52 may be configured with a tracked chassis on which a rotatable upper carriage may be mounted.

[0035] The belt reel 60 for the supply belt 10 according to the invention can be rotatably mounted on the upper side of the carrier device 52. The supply line 12 on the supply belt 10 is connected to a corresponding line connection 58 of the carrier device 52 in the region of the hub of the belt reel 60.

[0036] The earth-moving device is connected to the other end of the supply conveyor 10, which in the exemplary embodiment shown is configured as a trencher 51. The trencher 51 shown here can include an upper milling wheel 53 and a lower milling wheel 54. The trencher 51 can preferably include only the lower cutting wheel 54. The supply belt 10 is preferably guided on a deflection roller 63, which is held at the upper end of a boom or mast 64 in order to guide the trencher 51. The boom 64 can be adjusted via an adjustment element 66. The supply belt 10 can be connected to the trencher 51 via a connecting device 56.

Claims

1. A supply belt, particularly for an earth-moving machine (50), comprising: at least two supply lines (12), which are arranged next to each other to form a strip line assembly (14), wherein the diameter of the supply lines (12) does not exceed a maximum line diameter (D), - two lateral guide strings (20), one guide string (20) in each case extending along each edge side of the line assembly (14), and each of the two lateral guide strings (20) consisting of dimensionally stable sections (22) which are positioned one above the other when the supply belt (10) is wound up, wherein the height (H) of the sections (22) is greater than the maximum line diameter (D) by a defined protrusion in order to protect the supply line (12), and - transverse strips (30) arranged individually along the supply belt (10) and extending transversely to the longitudinal direction of the belt from a connecting section (32) of a first lateral guide string (20) to an opposite connecting section (32) of a second lateral guide string (20) and connecting them to one another, Features - the height of the connecting section (32) is equal to the height of the other sections (22) of the guide string (20), and The transverse strip (30) in the region of the line component (14) of the supply line (12) protrudes by a defined amount relative to the height of the connecting section (32).

2. The supply belt according to claim 1, Features The defined protrusion (V) of the transverse strip (30) in the region of the line assembly (14) is numerically equal to or smaller than the defined protrusion of the section (22) of the guide string (20) relative to the supply line (12).

3. The supply belt according to claim 1 or 2, Features The transverse strip (30) in the region of the line component (14) of the supply line (12) protrudes on both sides by a defined protrusion (V) relative to the height of the connecting section (32).

4. The supply belt according to any one of claims 1 to 3, Features The transverse strip (30) is constructed in a frame-like manner with passages (36) spaced apart from one another for receiving and retaining the supply line (12).

5. The supply belt according to any one of claims 1 to 4, Features The transverse strip (30) is provided with fastening means, in particular a line clamp, which is configured for fixing the supply line (12) to the transverse strip (30).

6. A supply belt according to any one of claims 1 to 5, Features The supply line (12) is designed as a hose line, a power line and / or a data line for conducting liquids or gases.

7. A supply belt according to any one of claims 1 to 6, Features The supply belt is wound onto a belt reel (60), wherein the windings of the lateral guide string (20) are positioned one above the other in the wound-up state.

8. The supply belt according to claim 7, Features The transverse strips (30) are spaced apart from one another along the supply strip (10) in the longitudinal direction of the strip in such a way that they are not positioned directly above one another in the wound-up state.

9. A supply belt according to any one of claims 1 to 8, Features At least one steel cable or suspension cable extends along each guide string (20), the steel cable or suspension cable extending within the section (22).

10. An earth-moving machine (50), Features At least one supply belt (10) according to any one of claims 1 to 9 is arranged.

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