Use of protection device, half shell and / or locking element and method

Abstract

To provide a protection device, which can protect a cylindrical body from abrasion, can be easily assembled, and can be connected to the cylindrical body without any additional element like a screw or a clamp.SOLUTION: A protection device comprises: at least two half-shells 12 configured to be arranged on an outer face of a cylindrical body 11, the two half-shells each comprising at least one notch; and at least one lock element 14 configured to be arranged in the at least one notch of each half-shell, for connecting the two half-shells and locking the protection device 10 in an assembled state in an axial direction by forming a form- and / or force-fit with the cylindrical body.SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present invention relates to a protective device, the use of half-shells and / or locking elements in a protective device, and a method for assembling such a protective device. [Background technology]

[0002] Protection devices for cylinders, in particular pipes, hoses, cables, etc., are generally known in the prior art. Such protection devices may be placed at critical points of such cylinders, for example corrugated hoses for cables on machines. Such machines may for example be robots, and the protection devices are used to prevent damage to the hoses by friction or rubbing at such critical points that may come into contact with moving parts, for example swing arms, arms or hands. However, such protection devices may be used in other industrial fields and processes. Protection devices usually consist of two parts that are joined together by separate means, for example metal screws, clamps, clips, etc. The assembly of such protection devices is therefore difficult and can be time-consuming. Moreover, subsequent repositioning is only possible with considerable effort. In addition, the separate means, which are mostly made of metal, may cause damage to the machine, since they are not made of plastic like the cylinders.

[0003] It is now apparent that there is a need to provide a better protection device for protecting cylindrical bodies that does not have any metal parts and has a lower weight.

[0004] In light of the above, it is an object of the present invention to provide a protection device which protects a cylinder from wear and which is easier to assemble, in particular to provide a protection device which allows it to be connected to the cylinder without any additional elements such as screws or clamps.

[0005] These and other objects which will become apparent on reading the following description are solved by the subject matter of the independent claims. The dependent claims refer to preferred embodiments of the invention. Summary of the Invention

[0006] According to an aspect of the present invention, there is provided a protection device for protecting a cylindrical body, in particular a pipe, a tube, a cable or a hose, the protection device comprising at least two half shells configured to be arranged on an outer surface of the cylindrical body, wherein each of the at least two half shells comprises at least one cut-out, and at least one locking element configured to be arranged in the at least one cut-out of each half shell for connecting the at least two half shells and locking the protection device in an axially assembled state by forming a form-fit and / or a press-fit with the cylindrical body.

[0007] The protection device may be used on a cylinder or cylindrical element such as a pipe, hose, cable, or similar structure. The cylinder may be flexible. Furthermore, the cylinder may have a textured, smooth, or corrugated surface. The cylinder may also be described as a cylindrical conduit.

[0008] The protection device consists of at least three parts. More precisely, it comprises at least two half shells and at least one locking element. In a preferred embodiment, the protection device may comprise four parts. More precisely, it may comprise two identical half shells and two locking elements.

[0009] The half shells are configured to be arranged on the circumference of the cylinder in the assembled / installed state. In other words, the protection device may be adjacent to and / or in contact with the outer surface of the cylinder. The two half shells are preferably semicircular. Other shapes may be possible. The half shells each comprise at least one cut-out. In the assembled / installed state, the cut-out allows access to the outer surface of the cylinder so that the locking element can be arranged.

[0010] At least one locking element connects the two half shells to each other. For this, the locking element is arranged in a cutout of each half shell. The locking element further locks the protective device in the axial direction of the cylinder, in which the protective device is arranged, by forming a form-fit and / or a press-fit with the outer surface of the cylinder. From this, the locking element has two functions. Moreover, the locking element may be interchangeable. This means that, depending on the surface of the cylinder, different locking elements can be used with the same half shell. For example, a locking element for a cylinder with a corrugated surface may differ from a locking element for a cylinder with a smooth surface.

[0011] The axial direction is the direction perpendicular to the radial direction of the half-shell or cylinder, in other words, the axial direction should be understood as the longitudinal direction of the cylinder.

[0012] The protection device according to the invention allows to be placed at a designated position on the cylinder without additional separate connection means, such as screws, clamps, clips, etc. Furthermore, the assembly and / or disassembly of the protection device according to the invention is easy and time-saving.

[0013] The protection device according to the invention therefore has a modular feature and can be easily configured for different applications. In addition, thanks to the design of the protection device and taking into account the different possible internal contours of the locking elements, which can be quickly, easily and intuitively exchanged, the field of application of the protection device can cover corrugated pipes with different pitches, hoses with smooth surfaces, over-extruded corrugated pipes, cables or components with similar external contours, etc. In other words, thanks to the protection device, the same basic components (half shells) are used for each application and, thanks to the corresponding inserts (locking elements), are designated for the respective application.

[0014] The protective device or protective sleeve according to the invention includes several technical advantages. The protective device according to the invention has a smaller volume and therefore less weight than the protective devices of the prior art. As the protective device is lighter, it weighs less on cylindrical bodies, e.g. corrugated tubes, which is important, for example, in the field of robotics / automation but also in other industrial fields. The protective device can be designed without any metal components. This allows the protective device to absorb the impact instead of breaking in case of a bang or blow. In addition, the weight of the metal screws is also eliminated, which contributes to an additional weight reduction. Furthermore, thinner wall thicknesses are possible, which leads to a further reduction in weight, material savings and faster production times. In addition, the protective device according to the invention has a better flexibility, which has been proven by laboratory analysis. The increased flexibility delays fracture during use, which is important since many movements and impacts occur in the field, e.g. during industrial processes. If the stiffness of the components is excessive, they will break faster due to impacts, since shock absorption is not possible. The protection device according to the invention comprises a locking element instead of a screw and is therefore capable of cushioning against shocks.

[0015] In a preferred embodiment, the locking element is configured to form a form-fit with the at least partially corrugated cylinder. The corrugated surface is particularly well suited for an axial form-fit connection of the cylinder. This embodiment therefore provides a viable solution for connecting a protection device with such a cylinder.

[0016] In a preferred embodiment, the at least two half shells each comprise two cutouts, and the at least two half shells are connected to each other by at least one locking element, in particular two locking elements, arranged in the two cutouts. The two locking elements provide a form-restraint and / or a press-fit for the two half shells, which also provides a fixation of the protection device in the axial direction of the cylinder.

[0017] In an embodiment, the at least two half shells each comprise at least one connecting element at a free end of the at least two half shells. The free ends are located in the circumferential direction of the half shells. The connecting element provides a means for connecting the two half shells, so that the half shells remain in place during installation. The at least one connecting element may help the two half shells to remain in place until the locking element is placed in the cutout and / or until the protection device is placed on its designated position. The connecting element may further provide a means for aligning the half shells in a precise and easy manner.

[0018] In an embodiment, the connection element comprises a dovetail joint and / or a pin-receiving connection or pin-receiving centering. The dovetail joint serves to pre-assemble the two half-shells to each other, which hold the form-fit together. The pin-receiving center the half-shells and prevents them from moving relative to each other. In a preferred embodiment, the connection element comprises both elements. These two connection means allow the connection between the two half-shells without fixing them to the cylinder. In other words, the two half-shells can still be moved in the axial direction of the cylinder to position the protection device.

[0019] In an embodiment, the at least two half shells are at least partially or completely identical to each other. In another embodiment, the protection device comprises two half shells and two locking elements, the two half shells and the two locking elements being identical to each other. By providing the half shells and / or locking elements that are at least partially or completely identical, production costs can be reduced.

[0020] In an embodiment, the locking element is connected to the half shells by a first latch element. The first latch element provides a means for connecting the locking element with the two half shells by form-fitting. The first latch element may thus be provided in the area of ​​the cutouts of the half shells. The locking element may preferably be connected with each half shell by a latch mechanism. The latch mechanism provides a connection means without any additional separate means such as, for example, screws, clamps, clips, etc.

[0021] In an embodiment, the at least one locking element comprises a fastening element for fastening the protection device to the cylinder in the assembled state. There can be different possible fastening elements, for example pressing means such as brackets and jaws or form-fitting means such as protrusions and notches.

[0022] In an embodiment, the fastening element comprises ribs arranged opposite each other at an axial end of at least one locking element adapted to be arranged in at least one cutout of the at least two half-shells in an assembled state. The axial direction of the locking element corresponds to the axial direction of the cylinder in an assembled state. In the assembled state, the rib may project towards the cylinder. The free end of the rib may correspond to the outer surface of the cylinder. The rib extends and interacts with a corrugated surface of the cylinder such that an axial form-fit may be provided.

[0023] In an embodiment, the ribs on one side are spaced apart by a gap, in particular a tapered gap. The gap may allow the locking element to be connected to the two half shells in an easier way. In the assembled state, the brace element of the half shell is located in the gap.

[0024] In an embodiment, in the assembled state, a slit is formed between the locking element and the half shells, in particular in the area of ​​the gap. The slit may provide a means for disassembling the locking element and the two half shells. The slit may be used to enter a screwdriver to lift the locking element. Alternatively, any other tool may be used that may be suitable.

[0025] In an embodiment, the at least two half shells each comprise at least one locking element and at least a second latch connection for connecting the at least two half shells. The second latch element allows a pre-assembly of the protection device. For pre-assembly, the second latch connection allows the locking element to be connected with the two half shells while still allowing the protection device to be moved in the axial direction of the cylinder. The second latch connection is a temporary connection until the protection device is moved to its designated position. When the protection device is in its designated or final position, the locking element can be connected with the two half shells by the first latch connection by pressing the locking element.

[0026] In an embodiment, the at least two half shells and the at least one locking element do not comprise any metal parts and are connected without any additional elements, in particular metal elements such as screws or clamps. In other words, the protection device can be made entirely from plastic materials. This allows for less material and a lighter weight. Furthermore, this allows the protection device to absorb the impact of blows and bangs without breaking.

[0027] By reducing the volume and / or thickness of the protective device, less material is needed to produce the protective device, and therefore production costs, materials, and weight of the protective element may be reduced.

[0028] A further aspect of the invention is directed to the use of a half shell and / or a locking element in a protection device according to one of the preceding embodiments.

[0029] A further aspect of the present disclosure is directed to a method for assembling a protection device according to one of the preceding embodiments, the method comprising the steps of: - providing two half shells and a locking element; - placing two half shells on a cylinder and connecting the two half shells by means of a locking element, or - connecting the two half shells by means of a locking element and sliding the protection device onto the cylinder Equipped with.

[0030] The accompanying drawings, which are included to provide a further understanding of the invention, and which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. [Brief description of the drawings]

[0031] [Figure 1] FIG. 2 is a perspective view of a schematic diagram of a half shell. [Diagram 2] FIG. 2 is a detailed view of the half-shell according to FIG. 1. [Diagram 3] FIG. 2 is a further detail of the half shell according to FIG. 1; [Figure 4] FIG. 2 is a perspective view of a schematic diagram of a locking element. [Diagram 5] FIG. 5 is a further perspective view of the locking element according to FIG. [Figure 6] FIG. 1 is a cross-sectional view of two half shells and a locking element during assembly, also called pre-assembly. [Figure 7] FIG. 2 is a side view of the two half shells and the locking element in an assembled state. [Figure 8] FIG. 2 is a cross-sectional view of the two half shells and the locking element in an assembled state. [Figure 9] FIG. 1 is a perspective view of two half shells being assembled. [Figure 10] FIG. 10 is a perspective view of two half shells according to FIG. 9 in a preassembled state. [Figure 11] FIG. 13 is a perspective view of two half shells and a locking element in a pre-assembled state. [Figure 12] FIG. 12 is a perspective view of the two half shells and the locking element according to FIG. 11 in a preassembled state. [Figure 13]FIG. 13 is a perspective view of the two half shells and the locking element according to FIG. 12 in an assembled state. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0032] 1 shows a half shell 12 of a protection device 10 according to the invention. The half shell 12 is adapted to be placed in a cylindrical body 11.

[0033] The half shell 12 comprises two web elements 21. The two web elements 21 have a semicircular shape and are parallel to each other. The two web elements 21 are connected by a bridge element 22.

[0034] The bridge element 22 extends in the circumferential direction of the web element 21. The bridge element 22 extends between the web elements 21. More precisely, the bridge element 22 is located in the intermediate area of ​​the two web elements 21 in the circumferential direction. The bridge element 22 is flush with the web element 21 on the outer surface of the half-shell 12. In particular, the complete outer surfaces of the web element 21 and the bridge element 22 of the half-shell 12 are flush. The bridge element 22 is not flush with the inner surface of the web element 21. The bridge element 22 and the web element 21 form a step on the inner surface of the half-shell 12. In other words, the bridge element 22 does not extend in the complete radial direction of the web element 21. The inner surface of the web element 21 comes into contact with the outer surface of the cylinder 11 in the assembled state.

[0035] The outer surfaces of the web elements 21 and bridge elements 22 of the half-shells 12 are at least partially rounded. More precisely, the web elements 21 and bridge elements 22 have a convex shape. The term convex should be understood here as curved or bent away from the central longitudinal axis of the cylinder 11 when assembled.

[0036] Brace elements 23 are arranged in the circumferential end areas of the web elements 21. Each brace element 23 extends from one web element 21 to the other web element 21 and connects the two web elements 21. The brace elements 23 each have the form of an arched web.

[0037] The half shell 12 comprises two cutouts 13. The cutouts 13 are arranged between the brace element 23, the bridge element 22 and the web element 21. The cutouts 13 each have a rectangular shape. Other shapes may also be possible.

[0038] FIG. 2 shows a detailed view of the circumferential free ends of the half-shells 12 and the brace element 23. Two connection elements 15 are arranged on the brace element 23. The half-shells 12 shown comprise two different kinds of connection elements 15. The connection elements 15 are further shown in more detail in FIG. 3. One connection element 15 is a dovetail connection 15a and the other connection element 15 is a pin-receiving connection 15b or a centering. The dovetail connection 15a provides easier assembly by holding the half-shells together by a shape constraint. The pin-receiving connection 15b or a centering prevents undesired movements of the half-shells, for example in the axial direction. By combining these two kinds of connection elements 15, a better and more reliable connection between the two half-shells 12 during assembly / installation may be possible. Furthermore, the two half-shells 12 cannot move relative to each other.

[0039] 1 and 2 also show that a first latch element 16 and a second latch element 20 are located at each of the circumferential ends of the bridge element 22. As shown in FIG.

[0040] The first latch element 16 comprises two protrusions on the inner surface of the bridge element 22. The two protrusions are equally spaced from the web element 21.

[0041] The second latch element 20 comprises a recess in the front side of the bridge element 22 in the circumferential direction. The second latch element 20 is therefore closer to the outer surface of the locking element 14 in the assembled state. It is also possible that the protection device 10 may comprise only the first latch element 16.

[0042] The first and second latch elements 16 , 20 interact with corresponding latch elements 24 on the locking element 14 .

[0043] The locking element 14 is shown in detail in Figures 4 and 5. The locking element 14 has an arch-like configuration. The locking element 14 further has convex walls or surfaces, in particular the outer and inner faces which, in the assembled state, are curved outwardly, in particular away from the longitudinal axis of the protection device 10.

[0044] The locking element 14 comprises ribs 17. The ribs 17 are arranged on the axial ends of the locking element 14. More precisely, the locking element 14 comprises two ribs 17 on each axial end. The axial direction is perpendicular to the radius of the semicircular half-shell 12. The ribs 17 project, in the assembled state, away from the convex wall towards the cylinder 11. The shape of the free ends of the ribs 17 corresponds to the cylinder 11. The ribs 17 are configured to interact with the corrugated surface of the cylinder 11 to allow an axial form-fit of the cylinder 11.

[0045] The ribs 17 are an embodiment of fastening elements of the protection device 10. Alternatively, other locking elements 14 may be provided having different fastening elements configured for different cylindrical bodies, e.g. smooth or structured cylindrical bodies 11.

[0046] In addition, the ribs 17 are not distributed over 360°, but over about 40° on two snaps, which means a total of 80°, and this reduction allows the half shells 12 to absorb the impact instead of breaking in case of a blow or blow. This has been proven by impact tests.

[0047] A gap 18 is located between two ribs 17 located on the same axial end. More precisely, the gap 18 is positioned in the center of the locking element 14 in the circumferential direction. The gap 18 is tapered, but may have any other suitable shape. In the assembled state, the two brace elements 23 of the two different half-shells 12 are connected to each other by the connecting element 15. When positioning the locking element 14, the connected brace element 23 is inserted or slid into the gap 18 of the locking element 14.

[0048] The locking element 14 comprises a tongue 25 on each circumferential free end. The tongue 25 extends along the free end of the locking element 14 in a direction parallel to the longitudinal axis of the cylinder 11 in the assembled state. Here, the tongue 25 extends along the entire length of the free end. Other embodiments may be possible. The tongue 25 extends in the same direction as the ribs 17. In other words, the tongue 25 extends / protrudes towards the cylinder in the assembled state.

[0049] Each of the tongues 25 of the locking element 14 is provided with a corresponding latch element 24. The corresponding latch element 24 is disposed on an outer surface of the tongue 25. The outer surface faces in the circumferential direction of the locking element 14. The corresponding latch element 24 is formed as an edge that projects away from the tongue 25. Alternatively, other suitable configurations may be possible.

[0050] The corresponding latch element 24 is designed to interact with the first latch element 16 and the second latch element 20. For example, during assembly of the protection device 10, the locking element 14 may first be connected to the half shell 12 by connecting the second latch element 20 with the corresponding latch element 24 (see FIG. 6). In this state, the two half shells 12 and the locking element 114 may be connected to each other but may not be locked or fixed in the axial direction of the cylinder. Thus, the protection device 10 may still be moved in said direction to be positioned at its designated position on the cylinder. Then, the locking element 14 may be connected by the first latch element 16 and the corresponding latch element 24 (see FIG. 7).

[0051] 8 shows a cross section of the protection device 10 in the assembled state. This figure shows that the ribs 17 are positioned in grooves in the corrugated surface of the cylinder 11.

[0052] 9 to 13 show how the protection device 10 can be assembled and placed on the cylinder 11.

[0053] 9 and 10, the provided half-shells 12 are centered and joined together by connecting elements 15. Then, the locking elements 14 can be inserted into the cutouts 13. First, the locking elements 14 can be connected by a second latching element 20 such that the protection device 10 can still be moved in the axial direction of the cylinder 11.

[0054] Alternatively, the protection device 10 can be pre-assembled (see FIG. 11). In the pre-assembled state, the locking element 14 is connected to the half-shell 12 by the second latch element 20. In this pre-assembled state, the protection device 10 can be slid onto the cylindrical body 11 (see FIG. 12). The protection device 10 can then be moved to its designated position. The designated position can be a position where damage to the cylindrical body, for example by wear, is more likely. The locking element 14 can then be moved to its locked position. The locking element 14 can be moved to its locked position by pressing such that the first latch element 16 interacts with the corresponding latch element 24 and the ribs 17 form a form fit with the corrugated surface of the cylindrical body 11 (see FIG. 13).

[0055] In figure 13 slits 19 can be seen on the outer surface of the protection device 10 in the area of ​​the gap 18 (see figure 6 ) of the locking element 14. The slits 19 are designed for dismantling the protection device 10, for example with the aid of a screwdriver or a hook.

[0056] The invention and design of the protection device 10 or protection sleeve allows for quick and easy fixing and repositioning of said protection device without using any additional metal or metal-like material. The protection device 10 can be adapted to different cylinders 11, in particular by switching the locking elements 14. In other words, the locking elements 14 can be equipped with different internal shapes or surfaces depending on the intended application.

[0057] Any disclosures and embodiments described herein relate to the protection devices and methods outlined above or below, and vice versa. Benefits provided by any of the embodiments and examples apply equally to all other embodiments and examples, and vice versa.

[0058] It should be noted that all embodiments of the invention relating to methods may be carried out in the order of steps described, but this need not be the only required order of steps of the method. The methods presented herein may be carried out in another order of the disclosed steps without departing from the respective method, unless expressly stated below to the contrary.

[0059] Other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed invention, from a study of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the indefinite articles "a" or "an" do not exclude a plurality. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage. Any reference signs in the claims should not be interpreted as limiting the scope of the claims. The invention as originally claimed in the present application is set forth below. [1] A protection device for protecting a cylindrical body (11), in particular a pipe, a tube, a cable or a hose, comprising: at least two half shells (12) configured to be placed on the outer surface of said cylindrical body (11), wherein said at least two half shells (12) each comprise at least one notch (13); at least one locking element (14) configured to be arranged in the at least one cut-out (13) of each half-shell (12) for connecting the at least two half-shells (12) and for locking the protection device (10) in the axially assembled state by forming a form-fit and / or a force-fit with the cylindrical body (11); A protection device comprising: [2] The protection device according to [1], characterized in that the at least one locking element (14) is configured to form a form fit with the at least partially corrugated cylindrical body (11). [3] The protective device according to [1] or [2], characterized in that the at least two half shells (12) each have two cutouts (13), and the at least two half shells (12) are connected to each other by at least one locking element, in particular two locking elements (14), arranged in the two cutouts (13). [4] A protective device as described in any one of [1] to [3], characterized in that each of the at least two half shells (12) has at least one connecting element (15) located at a free end of the at least two half shells (12). [5] The protective device according to [4], characterized in that the at least one connection element (15) comprises a dovetail joint (15a) and / or a pin-receiving connection portion (15b). [6] A protective device as described in any one of [1] to [5], characterized in that the at least two half shells (12) are at least partially or completely identical to each other. [7] A protective device as described in any one of [1] to [6], characterized in that the at least one locking element (14) is connected to the at least two half shells (12) by a first latch element (16). [8] A protection device as described in any one of [1] to [7], characterized in that at least one locking element (14) is provided with a fastening element for fastening the protection device to the cylindrical body (11) in an assembled state. [9] The protective device according to [8], characterized in that the fastening elements have ribs (17) arranged opposite each other at an axial end of the at least one locking element (14) configured to be placed in the at least one cutout (13) of the at least two half shells (12) in the assembled state.

[10] The protective device according to [9], characterized in that, in the assembled state, at least one slit (19) is formed between the at least one locking element (14) and the half shell (12) for disassembling the protective device (10).

[11] A protective device as described in any one of [7] to

[10] , characterized in that each of the at least two half shells (12) has the at least one locking element (14) and at least a second latch element (20) for pre-assembling the at least two half shells (12).

[12] A protective device as described in any one of [1] to

[11] , characterized in that the at least two half shells (12) and the at least one locking element (14) do not comprise any metal parts and are connected without any additional elements, in particular metal elements such as screws or clamps.

[13] Use of a half shell (12) and / or a locking element (14) in a protective device according to any one of [1] to

[12] .

[14] A method for assembling the protection device (10) according to any one of [1] to

[12] , comprising the steps of: - providing two half shells (12) and at least one locking element (14), - placing the two half shells (12) on a cylindrical body (11) and connecting the two half shells (12) by means of the at least one locking element (14), or - connecting the two half shells by means of a locking element (14) and sliding said protection device onto the cylinder (11). A method comprising:

[0060] [List of reference numbers] 10 Protection Devices 11 Cylinder 12 half shells 13 Cutout 14 Rock Elements 15 Connection elements 15a Dovetail joint 15b Pin receiving connection part 16 First Latch Element 17 Ribs 18 Gap 19 Slit 20 Second latch element 21 Web Elements 22 Bridge elements 23 Brace elements 24 Corresponding Latch Elements 25 Tongue

Claims

1. A protection device for protecting a cylindrical body (11), comprising: - two half shells (12) adapted to be placed on the outer surface of said cylinder (11), wherein said two half shells (12) each comprise at least one notch (13); at least one locking element (14) adapted to be arranged in and straddling said at least one cut-out (13) of each half-shell (12) for connecting said two half-shells (12) and for locking said protection device (10) in the axially assembled state by forming a form-fit and / or a force-fit with said cylindrical body (11); A protection device comprising:

2. A protective device as described in claim 1, wherein the cylindrical body (11) is a pipe, tube, cable or hose.

3. 2. The protection device according to claim 1, characterized in that the at least one locking element (14) is configured to form a form-fit with the at least partially corrugated cylindrical body (11).

4. 2. A protection device according to claim 1, characterized in that the two half-shells (12) each comprise two cut-outs (13), and the two half-shells (12) are connected to each other by means of two locking elements (14) arranged in the two cut-outs (13).

5. 2. A protection device according to claim 1, characterized in that the two half-shells (12) each comprise a connecting element (15) located at the opposite free ends of the two half-shells (12).

6. 6. A protection device according to claim 5, characterized in that the connection element (15) comprises a dovetail joint (15a) and / or a pin-receiving connection (15b).

7. 2. A protection device according to claim 1, characterized in that the two half-shells (12) are at least partially or completely identical to each other.

8. 2. A protection device according to claim 1, characterized in that said at least one locking element (14) is connected to said two half-shells (12) by a first latch element (16).

9. 2. A protection device according to claim 1, characterized in that the at least one locking element (14) comprises a fastening element for fastening the protection device to the cylindrical body (11) in the assembled state.

10. 10. The protection device according to claim 9, characterized in that the fastening element comprises ribs (17) arranged opposite each other at an axial end of the locking element (14) adapted to be placed in the at least one cut-out (13) of the two half-shells (12) in the assembled state.

11. 11. The protection device according to claim 10, characterized in that in the assembled state, at least one slit (19) is formed between the locking element (14) and the half shells (12) for disassembling the protection device (10).

12. 9. A protection device according to claim 8, characterized in that the two half-shells (12) each comprise the locking element (14) and at least a second latch element (20) for pre-assembling the two half-shells (12).

13. 2. A protection device according to claim 1, characterized in that the two half shells (12) and the locking element (14) do not comprise any metal parts and are connected without any additional elements.

14. A protective device as described in claim 13, wherein the additional element is a metal element such as a screw or a clamp.

15. Use of a half shell (12) and / or a locking element (14) in a protection device according to claim 1.

16. A method for assembling the protection device (10) of claim 1, comprising the steps of: - providing two half shells (12) and a locking element (14), - placing said two half-shells (12) on a cylinder (11) and connecting said two half-shells (12) by means of said locking elements (14), or - the locking element (14) connects the two half-shells by means of a second latch (20) and slides said protection device in a pre-assembled state onto the cylinder (11). A method comprising:

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