Supply belts, especially supply belts for civil engineering machinery.

Abstract

To provide a supply belt for civil engineering machinery which has high stability and can be wound up compactly.SOLUTION: The supply belt comprises: at least two supply lines which are arranged side by side to form a belt-like line assembly and which have diameters less than a maximum line diameter; lateral guide strands which run along respective end edges of both ends of the line assembly and are constructed of dimensionally uniform multiple segments positioned to overlap each other when the supply belt is wound up, where, for protection of the supply lines, the height of each segment exceeds the maximum line diameter by a prescribed projection amount; and crossbars, which extend transversely to a longitudinal direction of the belt from a connecting segment of the first lateral guide strand to an opposite connecting segment of the second lateral guide strand, thereby linking them together.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a supply belt, particularly a supply belt for construction machinery. The supply belt of the present invention is at least two supply lines arranged adjacent to each other to form a belt-shaped line assembly, and the diameter of each supply line is the maximum line diameter [[END Diameter D not exceeding a certain value, at least two supply lines, and two side guide strands extending along the edges on both sides of the line assembly, each guide strand being composed of a plurality of segments with no dimensional variation, the plurality of segments overlapping each other when the supply belt is wound up, and the height of each segment exceeding the maximum line diameter by a predetermined protrusion amount in order to protect the supply line Diameter D not exceeding a certain value, two side guide strands, and a plurality of cross belts individually arranged along the supply belt, the cross belts extending across the belt longitudinal direction from the joining segment of the first side guide strand to the joining segment of the second side guide strand on the opposite side and connecting them to each other. The supply belt according to the preamble of claim 1.

Background Art

[0002] A general supply belt for construction machinery is disclosed in, for example, Patent Document 1. This supply belt has a plurality of supply lines arranged adjacent to each other to form a belt-shaped line assembly. Guide strands are provided at the edges on both sides of the line assembly, and the guide strands are chain-made of a plurality of segments with no dimensional variation. In order to protect the supply belt, each segment has a height exceeding the maximum line diameter of the supply line by a predetermined protrusion amount. This prevents damage to the supply line when the supply belt is wound up. The reason is that the layers wound overlapping each other are located above the lower layer in the region of the larger side guide strand, so that in the radial direction, the main force is absorbed by the segments with no dimensional variation of the side guide strand. Since the height of the supply belt is determined by the height of the segment, the height of the segment is also called the system height.

[0003] Furthermore, the transverse strips are positioned independently along the supply belt, traversing the longitudinal direction of the belt, extending from one segment of the first lateral guide strand to the opposite segment of the second lateral guide strand, connecting them to each other. The segments connected to the transverse strips can also be called connecting segments. The transverse strips can hold adjacent supply units in place and secure them in place. The transverse strips also allow supply strips to be connected to the lateral guide strands, thus reducing tension in the supply line.

[0004] Therefore, the transverse belt must be manufactured to have sufficient mechanical strength. To make the supply belt as lightweight as possible, the transverse belt can be made from light metals such as aluminum alloy instead of steel. Since the strength of light metals is not very high, the transverse belt needs to have a relatively large wall thickness to prevent bending or breakage, which means that the lateral segments become larger and, consequently, the height of the supply belt increases. As the height of the supply belt increases, the length of belt that can be wound around or wound onto a belt drum with the maximum drum diameter decreases. [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] European Patent Application Publication No. 1826456 [Overview of the Initiative] [Problems that the invention aims to solve]

[0006] The fundamental objective of this invention is to provide a supply belt, particularly one for civil engineering machinery, that is highly stable while being able to be wound up in an extremely compact manner. [Means for solving the problem]

[0007] The object of the present invention is achieved by using a supply belt having the features described in claim 1. Preferred embodiments of the present invention are given in the dependent claims.

[0008] The supply belt according to the present invention is characterized in that the height of the connecting segment is equal to the height of the other segments of the guide strand, and the transverse band protrudes by a predetermined amount relative to the height of the connecting segment in the region of the line assembly of the supply line.

[0009] The basic concept of this invention is that a transverse strip protrudes by a predetermined amount relative to the height of adjacent connecting segments within the area of ​​the line assembly of the supply line. The connecting segments have the same height as other segments that are not connected to the transverse strip. The total height of the supply belt is determined by the height of the segments plus the predetermined protrusion amount of the transverse strip. However, if the supply belt is wound, the winding height is determined only by the height of the segments. The protrusion amount of the transverse strip can be absorbed within the area of ​​the line assembly having the supply line, and the maximum diameter of the supply line is smaller than the height of the segments. Therefore, this free space in the transverse strip can be utilized at the protrusion.

[0010] As a result, a transverse belt can be manufactured with sufficient material thickness and strength, and this does not negatively affect the height and number of turns when the supply belt is wound onto the drum. Therefore, longer supply belts can be wound onto existing hose drums or belt drums. Alternatively, the conveying diameter of the reel can be reduced while maintaining the length of the supply belt, which, depending on the situation, means that expensive dedicated conveying means can be avoided.

[0011] Furthermore, the more compact configuration results in a shorter lever and reduced operating weight, thus lowering the torque required for winding and unwinding. Additionally, material and manufacturing costs are reduced in the production of the supply belt.

[0012] According to a further development of the present invention, a predetermined protrusion amount of the transverse strip in the area of ​​the line assembly is less than or equal to a predetermined protrusion amount of the guide strand segment relative to the supply line. This prevents the supply line from being damaged within the line assembly by the protrusion of the transverse strip, thereby protecting the line.

[0013] In principle, the transverse strip may be configured to protrude on only one side of the block-shaped segment, and may be configured asymmetrically. According to a further development of the present invention, it is particularly advantageous for the transverse strip to protrude on both sides by a predetermined amount relative to the height of the connecting segment within the area of ​​the line assembly of the supply line. This allows the free space present in the supply belt to be utilized very effectively for the formation of the transverse strip during winding. Preferably, the sum of the protrusions on both sides is less than or equal to a predetermined protrusion amount of the guide strand segment relative to the supply line.

[0014] According to a further embodiment of the present invention, the transverse strip is configured in a frame shape having a plurality of passages, which are spaced apart from each other to receive and hold the supply lines. Specifically, the passages are formed to match the outer diameter of each supply line. The supply lines are passed through the passages and held in place relative to each other. Since the transverse strip is attached to or formed integrally with the segments of the guide strands, the guide strands are also held in place relative to each other, and the entire supply line is held in a desired shape and arrangement.

[0015] Another advantageous embodiment of the present invention is a fastening device configured to secure the supply line to the transverse, specifically, a line clamp provided on the transverse. By adding a configuration that directly secures the supply line to the transverse, a reduction in tension on each supply line can be achieved. Tensile loads can be absorbed along the supply line by the transverse and guide strands, preferably via existing tension or suspension cables. The tension or suspension cables may be routed through channels within segments of the guide strands. This avoids undesirable tightening of the supply line during winding. As a result, overall protection and an extremely long service life can be achieved.

[0016] In general, the supply line can be configured in any suitable form. According to one modification of the present invention, the supply line is preferably configured as a hose line for carrying liquid or gas, as an energy line, and / or as a data line. The hose line can be configured in particular to carry hydraulic fluid, or compressed air, or coolant, or excavation slurry, or cutting slurry, or to transport slurry together with removed soil material. The power line may be a metal cable for carrying electric current, and the cable may be adequately insulated. The data line may also be a metal wire, but may be, for example, an optical fiber. These lines can be combined and arranged on the supply belt so that fluid, energy, and data can be efficiently supplied from the supply belt to, for example, a construction machine.

[0017] In one embodiment of the present invention, it is particularly advantageous that the supply belt is wound onto a belt drum, and the winding portion of the lateral guide strand is positioned in an overlapping manner in the wound state. The guide strand is formed in a manner in which segments of essentially the same structure are linked together in a chain. The segments, manufactured from metal or plastic to avoid dimensional variations, can be held by at least one tension cable or suspension cable extending along the guide strand within one or more passages of the individual segments.

[0018] In a known manner, tongue-shaped and groove-shaped components can be formed on the segments, and these components can be used to connect and hold the segments together in a flexible manner that allows them to be wound onto a belt drum. The belt drum can be installed on a fixed base frame of civil engineering machinery or a movable conveying device, and can also be rotatably mounted. The belt drum may be rotationally driven by at least one drum drive unit, and it is preferable that this rotational drive can wind and unwind the supply belt onto the belt drum.

[0019] Multiple crossbars can be positioned at a distance from each other at each point of the supply belt, between two connecting segments that are opposite each other in the lateral direction. According to one embodiment of the present invention, particularly for compact winding, it is advantageous to position the crossbars at intervals along the supply belt in the longitudinal direction of the belt so that the crossbars do not directly overlap each other when the supply belt is wound up. By distributing the crossbars along the supply belt in this way, it is possible to avoid two crossbars facing each other and coming into contact when the supply belt is wound up. Crossbars with stable dimensions are positioned so that they do not face each other and come into contact when the supply belt is wound over adjacent winding sections. This allows for effective use of space within the line configuration for the crossbars.

[0020] In principle, each segment can be connected in any suitable manner to form a guide strand. According to one embodiment of the present invention, it is particularly useful if at least one steel cable or suspension cable extends along each guide strand and these cables extend within the segments. Each segment has a passage through which the steel cable or suspension cable can pass. This allows the segments to be held in place to form a guide strand while simultaneously reducing tension on the cables.

[0021] The present invention further relates to a construction machine characterized in that at least one supply belt according to the present invention is arranged. This construction machine may specifically be a trench cutter, or a diaphragm gripping device, or an excavation rig, or other soil removal device that needs to be connected to several supply lines for supplying liquid, gas, energy, and / or data during operation.

[0022] Hereinafter, the present invention will be described in detail with reference to the preferred embodiments schematically shown in the drawings. The drawings are as follows.

Brief Description of the Drawings

[0023] [Figure 1] It is a schematic diagram of the supply belt according to the present invention. [Figure 2] It is an enlarged detailed view of the cross-section of the supply belt according to the present invention. [Figure 3] It is a front view of the cross-section in FIG. 2. [Figure 4] It is a schematic cross-sectional view of the supply belt according to the present invention wound in a superimposed manner. [Figure 5] It is a view showing a conventional supply belt different from the present invention in a state corresponding to FIG. 4. [Figure 6] It is a schematic side view of a construction machine equipped with the supply belt according to the present invention.

Modes for Carrying Out the Invention

[0024] FIG. 1 shows a supply belt 10 according to the present invention having a total of seven supply lines 12. These supply lines 12 are arranged adjacent to each other to form a belt-shaped line assembly 14. Guide strands 20 are provided at each end edge on both sides of the line assembly 14, and each guide strand 20 is composed of a plurality of segments 22 arranged in a row and having no variation in dimensions. In the illustrated exemplary embodiment, each segment 22 has two cable passages 24 through which a tension cable or a suspension cable passes. As a result, the individual segments 22 are arranged in a chain-like manner with a certain degree of flexibility with respect to each other to form each guide strand 20.

[0025] Along the supply belt 10, a plurality of transverse strips 30 are individually arranged, and each transverse strip 30 extends between the two connecting segments 32 of both guide strands 20 so as to traverse the longitudinal direction of the belt.

[0026] Figures 2 and 3 show the structure of each transverse strip 30. The transverse strip 30 is a rod-shaped member with a roughly rectangular cross-section, and includes a central strip 34 formed by the joining of two connecting segments 32, each incorporated into the lateral guide strands 20 on both sides, in the manner of a single part. The strip 34 is provided with passages 36 corresponding to the number and dimensions of the supply lines 12 to be accommodated. The supply lines 12 can be fixed to the transverse strip 30 by placing fixing devices, such as hose clamps (not shown), in the area of ​​the passages 36. This improves the stability of the supply belt 10 and reduces tension on each supply line 12. Multiple passages may have the same configuration or may have different configurations to accommodate lines of different sizes.

[0027] The diameter of the passage 36 is the maximum line diameter of the supply line 12 to accommodate. Diameter D The settings are adjusted accordingly. To prevent damage to the supply line 12 when the supply belt 10 is hoisted or unwound, the guide strand 20, which has segments 22 and their respective connecting segments 32, is formed to a height H that exceeds the maximum line diameter D of the supply line 12 by a predetermined amount of protrusion. To ensure that the passages 36 of each supply line 12 are securely accommodated, the transverse strip 30 has a minimum wall thickness W in the central strip 34 that extends outward in the height direction from the passages 36, as shown in Figure 3. As a result, the total thickness G of the transverse strip 30 in the central strip 34 is greater than the height H of the connecting segments 32 on the sides of the transverse strip 30. Therefore, as shown in Figure 3, there are shoulders 40 that protrude by an amount V at the transition between the two connecting segments 32 and the central strip 34.

[0028] In the exemplary embodiments shown in Figures 2 and 3, the shoulder portion 40 is formed on both the upper and lower sides of the transverse band 30. Therefore, the total thickness G of the central band portion 34 of the transverse band 30 is calculated by adding twice the protrusion amount V of the shoulder portion 40 to the height H of the connecting segment 32. As a result, the height H of the connecting segment 32 becomes smaller than the total thickness of the central band portion 34 of the transverse band 30, and a stepped region is provided in the connecting segment 32.

[0029] The advantages of the embodiment according to the present invention can be seen in particular in the schematic diagram shown in Figure 4, which shows a cross-section of the winding layer or winding portion 18 constituting the supply belt 10 according to the present invention.

[0030] Due to the stepped region of the connecting segment 32 in the transverse strip 30, the winding height for a single pass is determined by either the height of the segment 22 or the height of the connecting segment 34 alone. The protruding portion of the material in the central strip 34 can protrude into the adjacent space of the adjacent winding section 18. The space of the adjacent winding section 18 is formed by a predetermined amount of protrusion of the height H of the segment 22 or the connecting segment 32 relative to the maximum line diameter D of the supply line 12.

[0031] Compared to a conventional supply belt constructed using a continuous transverse strip 30' without a lateral offset portion, as shown in Figure 5, the advantages obtained by the embodiment of the present invention are particularly clear.

[0032] A conventional supply belt having this type of continuous transverse strip 30' may have, for example, a height H of 80 mm. This height H of the transverse strip 30' also defines the height of the other segments of the lateral guide strands, and consequently the height of each winding section. When such a supply belt is wound onto a standard belt drum having a typical hub diameter of 1450 mm and a typical outer diameter of 3550 mm, the number of layers obtained with this 80 mm height H is 13, and the maximum winding length of the supply belt 10 is 100 meters.

[0033] On the other hand, when the supply belt 10 according to the present invention is provided, the thickness on both sides of the transverse belt 30 is reduced by 2.5 mm in the region of the connecting segment 32 of the transverse belt 30, so that the height of the segment 22 and the height of each winding section or each layer become 75 mm H. When the supply belt 10 according to the present invention is used with a belt drum of the same design, the total belt length of 109 meters can be wound into a total of 14 layers.

[0034] Furthermore, if a 5 mm step is provided on both sides of the transverse strip 30 in the region of the connecting segment 32, without impairing the strength of the central strip portion 34 of the transverse strip 30, then a belt drum with the same configuration can achieve 15 layers of the supply belt 10 according to the present invention, and consequently, a maximum winding amount of 117 meters.

[0035] Therefore, the supply belt 10 according to the present invention can provide a very high storage capacity of the supply belt 10 with a belt drum of the same design. Thus, a high storage capacity, in particular a larger processing depth, can be achieved without changing the external dimensions of the civil engineering machinery according to the belt drum, and in the case of civil engineering machinery, a particularly high storage capacity can be achieved. Furthermore, when using a predetermined line length, the diameter of the drum, and consequently the movement dimension, can be reduced.

[0036] Figure 6 shows an example of a civil engineering machine 50 equipped with a mobile transport device 52. The mobile transport device 52 can be configured by mounting a crawler chassis on which a rotatable upper carriage can be attached.

[0037] The belt drum 60 of the supply belt 10 according to the present invention can be rotatably mounted on the upper part of the conveying device 52. The supply line 12 of the supply belt 10 is connected to the corresponding line connection part 58 of the conveying device 52 in the hub area of ​​the belt drum 60.

[0038] A civil engineering device is connected to the opposite end of the supply conveyor 10, and the civil engineering device is configured as a trench cutter 51 in the illustrated exemplary embodiment. An upper crushing wheel 53 and a lower crushing wheel 54 can be mounted on the illustrated trench cutter 51. The trench cutter 51 can also preferably be used with only the lower cutting wheel 54. The supply belt 10 is preferably guided by deflection rollers 63 held at the upper end of the boom or mast 64 to guide the trench cutter 51. The boom 64 can be adjusted by adjustment parts 66. The supply belt 10 can be connected to the trench cutter 51 via a connecting device 56.

Claims

1. A supply belt for civil engineering machinery, At least two supply lines arranged adjacent to each other to form a belt-shaped line assembly, wherein the diameter of each supply line does not exceed the maximum line diameter (D), Two lateral guide strands extending along the edges on both sides of the line assembly, each lateral guide strand comprising a plurality of segments having no dimensional variation, the plurality of segments being arranged to overlap each other when the supply belt is wound up, and the height (H) of each segment exceeding the maximum line diameter (D) by a first predetermined protrusion to protect the supply line, A transverse strip individually arranged along the supply belt, extending across the longitudinal direction of the belt from the connecting segment of a first lateral guide strand, which is one of the two lateral guide strands, to the connecting segment of the second lateral guide strand on the opposite side, and connecting them together, Includes, The height of the aforementioned connecting segment is equal to the height of the other segments of the lateral guide strand. In the region of the line assembly of the supply line, the transverse strip protrudes with a second predetermined amount relative to the height of the connecting segment. Supply belt.

2. A supply belt according to claim 1, The second predetermined protrusion amount (V) of the transverse strip in the region of the line assembly is less than or equal to the first predetermined protrusion amount of the plurality of segments of the lateral guide strand relative to the supply line. Supply belt.

3. A supply belt according to claim 1, In the region of the line assembly of the supply line, the transverse strip has both sides facing adjacent layers on both sides when the supply belt is wound and stacked, protruding from the height of the connecting segment by the second predetermined amount (V). Supply belt.

4. A supply belt according to claim 1, The aforementioned crossing is configured as a frame having passages spaced apart from each other, to receive and hold the supply line. Supply belt.

5. A supply belt according to claim 1, Specifically, a fixing device, which is a line clamp, is provided on the transverse strip, and the fixing device is configured to fix the supply line to the transverse strip. Supply belt.

6. A supply belt according to claim 1, The at least two supply lines are configured as hose lines for supplying liquid or gas, and / or as energy lines, and / or as data lines. Supply belt.

7. A supply belt according to claim 1, When the supply belt is wound around the belt drum, in the winding state, the winding portions of the lateral guide strands are arranged to overlap each other. Supply belt.

8. The supply belt according to claim 7, The transverse strips are arranged at intervals along the longitudinal direction of the supply belt so that they do not overlap with each other when wound up. Supply belt.

9. A supply belt according to claim 1, A supply belt having at least one steel cable or suspension cable extending along each lateral guide strand, the steel cable or suspension cable passing through the segment.

10. A civil engineering machine equipped with a supply belt according to any one of claims 1 to 9.

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