Laying device for holding and laying a laying material

Abstract

The invention relates to a laying device (11) for holding and laying a material to be laid (33), comprising at least two gripping jaws (12, 14) which are connected to each other by a common pivot axis (16) or which are each arranged with a pivot axis (16) on a support frame (17), with gripping jaws (31) provided at each end of the gripping jaws (12, 14) which are arranged facing each other and spaced apart from each other so that the material to be laid (33) can be positioned between them, with a gripping area (37) formed between the gripping jaws (31) which is bounded on one side by the support frame (17) or by at least one gripping jaw body (29) of the at least one gripping jaw (12, 14) and is open on the opposite side for placing on the material to be laid (33), with a lifting means (24) which is attached to one end of the at least one gripping jaw (12, 14) opposite one of the gripping jaws (31) or to the support frame (17) attacks, by which at least one gripping tool (12,14) can be moved into a gripping position (36) for holding the material to be laid (33), wherein a safety device (41) is provided which detects the presence and / or orientation of the material to be laid (33) in the gripping area (37) after the at least one gripping jaw (12, 14) has been moved into the gripping position (36) for the material to be laid (33) and outputs this information with a display device (50).

Description

[0001] The invention relates to a laying device for holding and laying a laying material.

[0002] DE 10 2015 115 433 A1 discloses a gripping device for gripping a laying material with at least two gripping tongs. This gripping device comprises a support frame on which the at least two gripping tongs are each pivotably mounted about a rotation axis. The gripping tongs have a gripping tong body. A gripping jaw is provided at one end of the gripping tong body. At the opposite end, traction means are provided which engage a head of the support frame. On the head of the support frame is a lifting means, in particular a holding eye, which serves for connection to a carrier device or an excavator or the like. The gripping device is handled by such a carrier device. The support frame has a central part, which is formed, for example, by an outer tube and an inner tube. A switching device is provided in or on this support frame.This switching device enables the grippers to be secured after assuming a gripping position to hold the material being laid.

[0003] Handling installation materials, such as L-shaped angle blocks or concrete barriers, especially New Jersey elements, requires a high level of safety, as such elements are unloaded from the back of a truck and placed on a floor. Loading can also occur above head height. Such handling requires proper gripping of the installation material with the installation device and, in addition, monitoring of the secure gripping position of the installation material relative to the installation device during handling.

[0004] The invention is based on the object of proposing a laying device for holding and laying a laying material, by means of which a gripping position of the laying material relative to the laying device can be monitored.

[0005] This object is achieved by a laying device for holding and laying a laying material, which comprises at least two gripping tongs which are connected to one another by a common axis of rotation or which are connected to a support frame, each with a rotational axis, and each comprise a gripping jaw at one end of the gripping tongs, which face one another and are provided at a distance from one another, so that the laying material can be positioned between them, and with a gripping area formed between the gripping jaws, which is delimited on one side by the support frame or by at least one gripping tong body of the gripping tongs and is open on the opposite side for placement on the laying material, and with a lifting means which engages an end of the at least one gripping tong opposite the gripping jaw or on the support frame, by means of which the at least one gripping tong can be transferred into a gripping position for holding the laying material,A safety device is provided that detects the presence and / or orientation of the material to be laid within the gripping area and indicates this with a display device. This allows the user of the laying device to easily determine whether the material to be laid is properly positioned and / or picked up within the gripping area and then to start laying the material if this is the case. Should the safety device indicate via the display device that the material to be laid is incorrectly aligned within the gripping area, the laying device can be released again and properly positioned relative to the material to assume a secure gripping position, particularly before the laying process begins.

[0006] It is preferably provided that the safety device detects a change in the alignment of the material to be laid relative to the gripping area or a change in the gripping position of the at least one gripping tong after the at least one gripping tong has been transferred into the gripping position and / or during the laying process and outputs this via the display device. Thus, any change in the position of the material to be laid relative to the gripping area of ​​the laying device that may occur during the laying process can be output immediately. If such a change occurs, the laying process can be aborted or reversed. Such a change in the position of the material to be laid relative to the gripping area of ​​the laying device can occur, for example, if the material to be laid is dirty or the gripping jaws on the at least one gripping tong are dirty or coated with oil or another coating that reduces the friction value.

[0007] The indicator device of the safety device can preferably be designed as a mechanical and / or electrical indicator and / or acoustic and / or vibrating and / or optical and / or haptic device. The selection of the indicator device can be adapted to the size and / or positioning on or in the installation device.

[0008] Advantageously, the safety device includes a sensor aligned with the gripping area, which can detect the presence of the material being laid in the gripping area as well as any change in the gripping position of the material being laid in the gripping area. Such a sensor enables a robust design of the safety device for construction operations.

[0009] The sensor of the safety device is preferably designed as a tactile sensor element. If the gripping area is free of any material to be laid or the material to be laid is only partially positioned within the gripping area, the sensor extends fully or only partially into the gripping area. This position is considered an error position. This error position is displayed on the display device. This makes it easy to detect whether the material is partially or not positioned within the gripping area.

[0010] When the material to be laid is properly positioned or present within the gripping area, the sensor is moved out of the gripping area and into a working position. This working position is indicated by the display device.

[0011] This allows the user to immediately see that the material being laid is properly held in the gripping position at the start of installation or during the installation process. Proper presence or proper positioning of the material being laid in the gripping area means that the end face of the material being laid, which is gripped by the installation device, extends as far as it will go into the gripping area and rests against the support frame or at least one gripper body of the at least one gripper, or against the safety device in the gripping area.

[0012] A change in the gripping position of the material to be laid or an improper presence of the material to be laid in the gripping area of ​​the laying device is output by the display device when the sensor moves from the working position to an error position. For example, this change in the gripping position of the material to be laid can be detected by the at least one sensor, which, for example, scans an end face of the material to be laid mechanically or without contact. It can also be provided that the at least one sensor detects a change in the alignment between at least two gripping tongs. By outputting such a change, the user can be signaled of the possible and resulting danger. The display device allows the user to immediately perceive this change.

[0013] The sensor can be designed, for example, as a plunger, in particular a movable plunger, or a lever, in particular a pivoting lever. These are simple, robust construction-site designs that can also be manufactured cost-effectively.

[0014] Advantageously, an indicator section or indicator flag is provided on the plunger or lever designed as a sensor, which is visible in the mechanical indicator device.

[0015] According to a preferred embodiment of the safety device, it comprises a base body in which an opening is provided for the sensor, which is pivotably or displaceably mounted on the base body. An indicator flag is provided on the sensor, which outputs the working position and the error position to the indicator device. The indicator device is preferably provided on the base body. This allows a simple, preferably optical, display to detect the presence and / or orientation of the material to be laid and / or its absence within the gripping area.

[0016] Preferably, the indicator flag, which is provided in particular on the sensor designed as a lever, is positioned and / or guided within a frame with a window. If the sensor assumes the working position, the working flag can be positioned outside the window and thus signals that the material to be laid is correctly positioned in the gripping area. If there is a change in the material to be laid relative to the gripping area or if the material to be laid is not correctly positioned in the gripping area, the indicator flag is moved to an error position. In this error position, the indicator flag is positioned within the window, and it is immediately apparent that action is required or that there is imminent danger.Furthermore, it can be provided that when the sensor is positioned in a home position, i.e., a position where no material to be laid is within the grasping range, the indicator flag is held in the error position. This home position can be indicated, for example, by positioning the indicator flag at an edge or end of the window.

[0017] According to an alternative embodiment of the tactile sensor element as a plunger, the plunger can be slidably guided and captively received in a guide. At an upper end of the plunger, an indicator flag is provided, which can protrude beyond the guide depending on the plunger position. The operating position and the fault position are visible by respective, different color codes. The color code is preferably provided on the indicator flag.

[0018] According to an alternative embodiment, the sensor is designed as a non-contact sensing element. A non-contact sensing element can be, for example, a light barrier, a proximity switch, an inductive sensor, or the like. The signals detected by the non-contact sensing element are forwarded to the electrical display and / or acoustic and / or vibrating and / or optical and / or haptic device, whereby the correspondingly detected signals are assigned to the presence, improper presence, or absence and output. The tactile as well as the non-contact sensing element can also be used in such a way that it is positioned on the support frame or a gripper and monitors a change in the path and / or position of the adjacent gripper. This can also be used to detect, for example, whether a change in the material being laid relative to the gripping area might have occurred.

[0019] Preferably, the safety device with the indicator device is designed as a single assembly and can be retrofitted by mounting it on an existing support frame or on at least one gripper body of the gripper. This has the advantage that laying devices already in operation can be additionally equipped with such a safety device.

[0020] The invention, as well as further advantageous embodiments and developments thereof, are described and explained in more detail below with reference to the examples shown in the drawings. The features shown in the description and the drawings can be used individually or in any combination according to the invention. They show: Fig. 1 a perspective view of a first embodiment of a laying device with a safety device, Fig. 2 a schematic side view of the laying device according to Fig. 1 with a laying material in a gripping position, Fig. 3 a schematic side view of the laying device according to Fig. 1, Fig. 4 a schematic side view of the safety device, Fig. 5 a schematic side view of an alternative embodiment of the safety device to Fig. 4, Fig. 6 a perspective view of an alternative embodiment of the laying device to Fig. 1, Fig. 7 a schematic side view of the laying device Fig. 6, and Fig. 8 a schematic side view in partial section of the laying device according to Fig. 6.

[0021] In Fig. 1 shows a perspective view of a first embodiment of a laying device 11. This laying device 11 comprises two gripping tongs 12, 14, each of which is pivotably mounted about a rotation axis 16 by a support frame 17. The support frame 17 consists of an outer tube 19 and an inner tube 21. A support element 22 is provided on the inner tube 21. This support element 22 serves to accommodate the rotation axes 16. This support element 22 advantageously extends perpendicular to a common vertical axis of the inner tube 21 and the outer tube 19. A switching device 23 acts between the inner tube 21 and the outer tube 19, ensuring the switching from gripping to releasing.

[0022] A lifting device 24 is provided on a head 18 of the support frame 17 or at the upper end of the outer tube 19. This lifting device 24 can, for example, be designed as a retaining eyelet or a retaining bolt, to which a carrier device (not shown in detail) engages for handling the laying device 11. Tensioning devices 26 engage on both sides of the head 18 of the support frame 17. Each tensioning device 26 is connected to a holding section 28 at an end section of the gripping tong body 29 of the gripping tongs 12, 14. The gripping tong body 29 accommodates at least one gripping jaw 31 at an end opposite the holding section 28. Preferably, two gripping tong bodies 29, which are aligned parallel and spaced from one another, form the gripping tongs 12, 14. The two gripping tong bodies 29 of the gripping tongs 12, 14 are preferably connected to a common gripping jaw 31.

[0023] In Fig. 2 is a schematic side view of the laying device 11 according to Fig. 1. Before positioning the laying device 11 on a piece of material 33 to be laid, the gripping tongs 12, 14 are opened so that the laying device 11 can be placed onto the piece of material 33 from above. Advantageously, a support element 22 of the laying device 11 rests on an end face 34 of the piece of material 33 when the gripping tongs 12, 14 are open. The carrier device then performs a lifting movement of the lifting means 24 in order to transfer the gripping tongs 12, 14 to a gripping position 36 for the piece of material 33 to be laid. In this gripping position 36, the gripping jaws 31 rest firmly against the side walls of the piece of material 33 to subsequently lift and lay it. This gripping position of the gripping tongs 12, 14 is secured by the switching device 23.

[0024] In the embodiment according to Fig. 2, the installation material 33 is designed as a concrete barrier, in particular a New Jersey element. Alternatively, other protective walls or L-shaped angle stones or other components used, for example, in road and / or garden landscaping can be provided. These components can have both conical and parallel side walls in the gripping area 37.

[0025] In Fig. 3 is a schematic side view of the laying device 11 according to the Fig. 1 and Fig. 2. In particular, Fig. 1 and Fig. Figure 3 shows the arrangement and positioning of a safety device 41. This safety device 41 is advantageously provided outside the construction volume of the laying device 11, wherein the construction volume of the laying device 11 is formed by the gripping tongs 12, 14, the support element 22, and the support frame 17.

[0026] This safety device 41 is assigned to a gripping area 37 of the laying device 11 or is positioned adjacent to the gripping area 37. The gripping area 37 is formed by a distance between the two opposing gripping jaws 31 of the gripping tongs 12, 14 as well as by a distance between a horizontal plane extending through the gripping jaws 31 and an underside of the support element 22 or a safety device 41 arranged thereon. This gripping area 37 is shown in dashed lines in Fig. 2 and Fig. 3 is shown.

[0027] In Fig. 4 shows a schematic side view of the safety device 41. The safety device 41 comprises a base body 42. The base body 42 is designed, for example, as a plate. An opening 43 is provided on the base body 42. A sensor 44 is assigned to this opening 43. This sensor 44 is designed as a tactile scanning element. The sensor 44 is mounted rotatably about a pivot axis 45. Adjacent to the sensor 44 is a display device 50. This display device 50 comprises an indicator flag 46 and a frame 47 with a window 48, wherein the indicator flag 46 is guided within the frame 47. This indicator flag 46 can be provided with a color, in particular a signal color, so that its position is quickly and easily visible. The sensor 44 and the indicator flag 46 can, for example, be formed from a single component.

[0028] In the Fig. 4, the sensor 44 is arranged in an error position 49. In this error position 49, the sensor 44 extends completely into the gripping area 37. This error position 49 is represented by the indicator flag 46, in which it is visible in the window 48, in particular in a lower area of ​​the window 48 in the frame 47. After positioning the laying device 11 on the laying material 33, as shown in Fig. 2, the sensor 44 is moved upwards by the end face 34 of the material 33 to be laid. If the end face 34 of the material 33 rests against an underside of the base body 42 of the safety device 41, the sensor 44 is moved into a working position 51. In this working position 51, the sensor 44 is positioned in the opening 43. In this working position 51, the indicator flag 46 is positioned outside the window 48, but within the frame 47. This working position 51 is shown in dashed lines in Fig. 4. In this working position 51 of the sensor 44, the window 48 is free of the indicator flag 46. This working position 51 of the sensor 44 signals to the user that the laying material 33 is correctly positioned in the gripping area 37 or that the laying device 11 has been correctly placed on the laying material 33, so that the gripping tongs 12, 14 can then be moved into the gripping position 36. If the laying device 11 is not correctly positioned on the laying material 33, i.e. there is a distance between the end face 34 of the laying material 33 and the safety device 41, in particular the base body 42 of the safety device 41, the sensor 44 remains in the error position 49 and the indicator flag 46 is visible within the window 48 of the display device 50. There is an improper positioning of the laying material 33 in the gripping area 37.This error position 49 is also displayed if, during handling of the laying material 33 with the laying device 11, the laying material 33 moves out of the gripping area 37 even slightly and a distance between the safety device 41 and the end face 34 of the laying material 33 increases.

[0029] At the Fig. 4, the safety device 41 is provided twice on a common base body 42. This results in a positioning of the safety device 41 relative to the laying device 11, as is shown, for example, in Fig. 1 and Fig. 3. This enables the user to determine from either side, with just one glance at the laying device 11, whether the material to be laid 33 is correctly positioned in the gripping space 37. Furthermore, this dual design of the safety device 41 also enables detection of an inclination of the material to be laid 33 in the gripping space 37. For example, the right sensor 44 of the safety device 41 can be provided in the working position 51, whereas the left sensor 44 is in an error position 49. This means that either the laying device is placed at an angle with respect to the end face 34 of the material to be laid 33, and possibly the gripping position 37 was subsequently assumed, or that the material to be laid 33 has sunk to one side within the gripping space 27 during handling.

[0030] In Fig. Figure 5 shows an alternative embodiment of the safety device 41 with the display device 50. In this embodiment, the sensor 44 is also designed as a tactile probe element, in particular in the form of a plunger. This plunger can be moved up and down within the base body 42, which is designed as a tube. The display device 50 is formed on a section of the plunger that protrudes upwards relative to the base body 42. This display device 50 can be implemented by color coding on one end of the plunger, which form the display flag 46. For example, with a retracted plunger, the working position 51 can be visible by a color coding according to the dashed line representation. If the plunger lowers, this working position 51 is no longer visible, so that only the error position 49 is visible.From this, the user in turn concludes that the laying material 33 is not properly positioned in the gripping space 37 of the laying device 11.

[0031] In Fig. 6 is a perspective view of an alternative embodiment of the laying device 11 to Fig. 1. The Fig. 7 shows a schematic side view of the laying device 11 according to Fig. 1. This laying device 11 comprises two gripping tongs 12, 14, each gripping tong 12, 14 being formed by two gripping tong bodies 29 arranged at a distance from one another and aligned parallel to one another. The two gripping tong bodies 29 of each gripping tong 12, 14 are in turn connected to one another by a gripping jaw 31. In this embodiment, the gripping tongs 12, 14 are connected to one another by a common axis of rotation 16. The lifting means 24 engages a holding section 28 of the gripping tong 12. In this embodiment, by way of example and additionally, a switching gate 27 is provided between the holding section 28 and the lifting means 24, by means of which the gripping tongs 12, 14 can be aligned with one another in an open position, thus enabling easier placement of the laying device 11 onto the material 33 to be laid.Even in such an embodiment of the laying device 11, the safety device 41 can be provided with the display device 50.

[0032] In Fig. 8 is a schematic sectional view of the laying device 11 according to Fig. 7. For example, the base body 42 of the safety device 41 is positioned on the gripper body 29 of the gripper 14. The sensor 44 can be positioned in the gripping area 37 through the opening 43 in the base body 42, provided that a laying material 33 is not located in the gripping area 37. The display device 50 of the safety device 41 can be led out between the gripper body 29 of the gripper 14 laterally and above the rotation axis 16. In the Fig.In the position of the sensor 44 shown in Figure 8, it is arranged in an error position 49. If the laying material 33 is completely positioned within the gripping area 37, the sensor 44 is pivoted toward the opening 43 and positioned within the opening 43 so that the indicator flag 46 is in the working position 51 and lies outside the window 48. QUOTES CONTAINED IN THE DESCRIPTION

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

[0000] DE 10 2015 115 433 A1

[0002]

Claims

[1] Laying device for holding and laying a laying material (33), - with at least two gripping tongs (12, 14) which are connected to one another by a common axis of rotation (16) or which are arranged on a support frame (17) with a respective axis of rotation (16), - with gripping jaws (31) provided at each end of the gripping tongs (12, 14), which are arranged facing one another and spaced apart from one another so that the laying material (33) can be positioned therebetween, - with a gripping area (37) formed between the gripping jaws (31), which is delimited on one side by the support frame (17) or by at least one gripping tong body (29) of the at least one gripping tong (12, 14) and is open on the opposite side for placement on the material to be laid (33), - with a lifting means (24) which engages an end of the at least one gripping tongs (12, 14) opposite the gripping jaws (31) or on the support frame (17), by means of which the at least one gripping tongs (12, 14) can be transferred into a gripping position (36) for holding the laying material (33), characterized by , - that a safety device (41) is provided which detects the presence and / or orientation of the laying material (33) in the gripping area (37) and outputs it with a display device (50). [2] Laying device according to claim 1, characterized bythat the safety device (41) detects a change in the orientation of the laying material (33) in the gripping area (37) or a change in the gripping position (36) of the at least one gripping tong (12, 14) after the at least one gripping tong (12, 14) has been transferred into the gripping position (36) for the laying material (33) and / or that the safety device (41) detects a change in the orientation of the laying material (33) in the gripping area (37) or a change in the gripping position (36) of the at least one gripping tong (12, 14) during a laying process and outputs it in the display device (50). [3] Laying device according to claim 1 or 2, characterized by that the display device (50) is designed as a mechanical and / or electrical display and / or as an optical and / or acoustic and / or vibrating device. [4] Laying device according to one of the preceding claims, characterized bythat the safety device (41) has at least one sensor (44) aligned with the gripping area (37), by means of which the presence of the laying material (33) in the gripping area (37) as well as a change in the position and / or the orientation of the laying material (33) in the gripping area (37) or the change in the gripping position of the at least one gripping tong (12, 14) can be detected. [5] Laying device according to claim 4, characterized by that the sensor (44) is designed as a tactile probe element and projects into the gripping area (37) if the gripping area (37) is free of a laying material (33) or the laying material (33) is only partially positioned in the gripping area (37), and outputs an error position (49) in the display device (50). [6] Laying device according to claim 5, characterized bythat the sensor (44) is positioned in the gripping area (37), adjacent to the gripping area (37) or outside the gripping area (37) when the laying material (33) is properly present and outputs a working position (51) in the display device (50). [7] Laying device according to one of claims 4 to 6, characterized by that the sensor (44) is designed as a plunger, in particular a displaceable plunger or a lever, in particular a pivotable lever. [8] Laying device according to one of claims 4 to 7, characterized bythat the safety device (41) has a base body (42) in which an opening (43) is provided for the sensor (44), which is pivotably or displaceably received on the base body (42) and on the sensor (44) an indicator flag (46) is provided, which indicates the working position (51) and the error position (49) in the indicator device (50) which is preferably provided on the base body (42). [9] Laying device according to claim 8, characterized by that the indicator flag (46), which is provided in particular on the sensor (44) designed as a lever, is guided within a frame (47) with a window (48), and the sensor (44) is not visible in the window (48) of the frame (47) in the working position (51) and the sensor (44) is visible in the window (48) of the frame (47) in the error position (49). [10] Laying device according to claim 8, characterized byin that in the sensor (44) designed as a plunger, the indicator flag (46) projects through a free end region of the base body (42) designed as a guide tube and is provided with at least one color code which indicates the working position (51) and / or the error position (49). [11] Laying device according to one of claims 1 to 4, characterized by that the sensor (44) is designed as a contactless sensing element, in particular as a light barrier, as a proximity switch or an inductive sensor, which transmits the detected signals to the electrical display and / or optical and / or acoustic and / or vibrating and / or haptic device and outputs the display device (50), the working position (51) or the error position (49). [12] Laying device according to one of the preceding claims, characterized bythat the safety device (41) with the display device (50) is designed as an assembly and can be retrofitted to existing laying devices (11).

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