BITE-LADING MACHINE

Description

[0001] The present invention relates to a bait-laying machine for the concealed placement of bait, preferably bait containing poison, in an artificially created tunnel in the ground according to the preamble of claim 1. Further bait-laying machines are shown in the prior art, such as in documents EP 0 018 314 A1, CN 202 819 421 U, GB 764 574 A, FR 2 644 675 A1, ES 1 027 053 U, DE 10 2016 003870 A1.

[0002] Preferably, the bait-laying machine is a mobile machine without its own power source. Accordingly, it can be a mobile attachment for coupling to a carrier and drive vehicle, such as a tractor. These carrier and drive vehicles have coupling devices to move the attached machines from a transport position to a working position, and vice versa. The bait-laying machine can also be called a bait-laying device.

[0003] Rodents, especially voles such as field mice, bank voles, muskrats, water voles, and lemmings, can cause severe damage to root vegetables, perennials, potatoes, fruit trees, and other crops. Rodent control can be achieved using fumigants, poison baits, or mousetraps. Bait that can be eaten by the bait is preferred. The bait must be placed deep inside the rodent tunnels, or in tunnels created with a bait gun or bait machine, and in a location inaccessible to birds. The rodent tunnels must be sealed off from the surface after the bait has been placed. To protect mammals and birds, no bait should remain on the surface.

[0004] The bait machine mentioned at the beginning has become well-known in practice. It has several disadvantages. Most notably, this well-known bait laying machine is not suitable for stony ground. Furthermore, problems can arise with the application and placement of the bait when using this machine.

[0005] Based on this prior art, the present invention aims to provide a bait laying machine that is better suited for placing bait in soil or earth on and / or in which obstacles, in particular hard objects such as stones, are located, and which offers advantageous possibilities for improved bait distribution or improved bait placement in the tunnel created by the tunnel former, and which offers advantageous possibilities for more secure closure of the tunnel created by the tunnel former after the bait has been placed in it.

[0006] This problem is solved by a bait laying machine with the features of independent claim 1. Meaningful embodiments can be found in the subsequent dependent claims and the following descriptive text.

[0007] In this respect, the invention relates to a bait laying machine for the concealed placement of baits, preferably bait, in particular poison baits, in an artificially created tunnel in the ground, comprising a towed trailer comprising a plow body with a share, which can also be called a plow, preferably and a pre-cutter or a coulter or a leading disc coulter or a leading coulter disc, for cutting the soil in front of the share having a share cutting edge, preferably and a pressure body, preferably a pressure roller or closing roller or pressure cylinder rotatable about a horizontal axis of rotation in an operating position, for closing a channel created by means of the pre-cutter orThe furrow, which can also be described as a slit, is previously produced in the soil by means of the coulter and the share, and which has a lower share end, preferably a front share end pointing in the direction of travel, to which a, preferably at least partially hollow, tunnel former, preferably rigidly, is attached, which extends in a longitudinal direction and / or in a direction of travel of the towed trailer and, preferably, which comprises a front, preferably closed, in particular solid, tunnel former end pointing towards the pre-cutter or the coulter in the direction of travel or longitudinal direction for forming a tunnel in the soil, as well as a bait laying channel, preferably designed as a tunnel former cavity, for placing the bait to be laid in the tunnel, preferably wherein the tunnel former cavity of the tunnel former extends in a direction of travel or longitudinal direction.The longitudinally extending lower tunnel former opening opens into the tunnel for the application of the bait, wherein it is provided according to the invention that the tunnel former forms a downwardly monotonously receding profile contour with the lower share end in the direction of travel, or that the lower share end at its front share end and the tunnel former at its front tunnel former end form a downwardly and rearwardly monotonously extending profile contour, preferably so that the tunnel former does not project beyond the lower share end of the share in the direction of travel or forward, preferably towards the pre-cutter.

[0008] These features according to the invention minimize the risk of getting stuck on obstacles on and / or in the ground, especially hard objects such as stones.

[0009] According to a particularly preferred embodiment, it can be provided that the front end of the channel former connects directly, preferably without steps, to a share cutting edge of the share pointing forward in the direction of travel or in the first direction, preferably towards the pre-cutter, and / or that one or the share or the share cutting edge of the share, viewed in a second direction from top to bottom towards the channel former, is inclined or beveled backwards in a third direction, preferably away from the pre-cutter, or is designed with a first bevel, and / or that the front end of the channel former of the channel former, starting from the lower end of the share, is inclined or beveled backwards in a fourth direction, preferably away from the pre-cutter, or is designed with a second bevel.This further reduces the risk of getting stuck on obstacles, especially stones, on or in the ground. In this context, one can speak of the design of the pile with a "negative undercut".

[0010] Preferably, the tunnel former opening is open to the rear when viewed in the direction of travel or longitudinal direction, and in a sixth direction away from the front end of the tunnel former, in order not to impede the bait placed in or deployed in the tunnel by means of the tunnel former when the tunnel former moves in the direction of travel or longitudinal direction.

[0011] According to a preferred embodiment, the tunnel former may be designed with a longitudinally extending, substantially cylindrical tunnel former tube, which has substantially cylindrical tunnel former tube walls that define a tunnel former cavity and that span a maximum tunnel former tube wall inner distance or a maximum tunnel former inner diameter to each other, and that a tunnel former opening of the tunnel former tube extending in the drag direction or longitudinal direction, viewed perpendicular to the drag direction or longitudinal direction, has a tunnel former opening width that corresponds substantially to the maximum tunnel former tube wall inner distance or the maximum tunnel former inner diameter of the tunnel former tube, or that is only slightly smaller than the maximum tunnel former tube wall inner distance or the maximum tunnel former inner diameter of the tunnel former tube.This minimizes the risk of the tunnel former opening becoming clogged with bait, thus enabling improved or long-term safe deployment of bait into the tunnel.

[0012] According to one embodiment, the tunnel former opening of the tunnel former tube, extending in the direction of travel or longitudinally, is created by separating or cutting off a lower section of the tunnel former tube for the application of bait into the tunnel. This allows the tunnel former opening to be produced particularly cost-effectively.

[0013] According to a preferred embodiment, the share can be pivotally mounted on a share support, also called a rib, relative to the share support, preferably about one or more horizontal pivot or rotation axes, by means of a mechanism. This mechanism is preferably coupled to the share support on one side and to the share on the other. This allows for advantageous adjustment of the position of the share and the attached channel former relative to the share support, and enables the share to avoid or pass obstacles, such as stones, lying on or in the ground.

[0014] According to a particularly preferred embodiment, the mechanism may comprise a four-link, four-bar linkage with parallel axes of rotation of its joints, or be designed as a four-link, four-bar linkage with parallel axes of rotation of its joints. The linkage is thus a planar four-bar linkage. Preferably, the linkage may be a guide linkage comprising a first linkage, a second linkage, a first guide arm functioning as a first rocker arm, and a second guide arm functioning as a second rocker arm, forming a double arm. The guide linkage may be designed as a parallelogram linkage. The above measures allow for further improved possibilities for adjusting the position of the share and the attached groove former relative to the share carrier, and for deflection or...Passing obstacles, such as stones lying on or in the ground. In particular, the above measures can ensure that the tunnel former, within a vertical range where it can be pivoted from a position just above the surface of the soil to a specific desired working depth, can maintain a substantially constant horizontal position approximately parallel to the surface of the soil. This allows for the advantageous creation of a horizontal tunnel in the soil for placing the bait with minimized forces, especially tensile forces, required to form the tunnel.

[0015] According to a preferred embodiment, the mechanism may include a first spring, preferably hydraulic, which is articulated directly or indirectly to the share carrier on one side and directly or indirectly to the share on the other. This spring force can be used to dampen a pivoting movement of the share relative to the share carrier. This allows for particularly effective handling of obstacles, such as stones. A so-called stone protection system can be achieved. For this purpose, the spring force of the first spring may be adjustable and / or the spring action of the first spring may be lockable. In the unblocked, i.e., activated or released, state of the first spring, a so-called floating position can be achieved, in which the first spring provides advantageous damping of the pivoting movement.If the spring force of the first spring is adjustable, a different degree of damping can be set.

[0016] According to a preferred embodiment, the first spring can be pivotally connected on one side to the share carrier and on the other side to the first guide arm or the second guide arm.

[0017] According to one design variant, the towing trailer may include a pressure body for closing a furrow previously created in the soil by means of the share.

[0018] According to a further development, the pressure body can be rotatable about a horizontal axis of rotation in its operating position. The pressure body, rotatable about this axis, can be equipped with engagement elements, such as teeth, around its outer circumference. These teeth ensure more reliable rotation of the pressure body when it rests on the ground. The pressure body, rotatable about this axis, can be coupled to a metering device for dispensing bait, which is driven by the pressure body. A reservoir for the bait dispensed by the metering device can be associated with the metering device. The metering device can be a metering disc rotatable about an axis of rotation, which has one or more through-openings or...It may have boreholes for the metered release of bait from the storage container into the tunnel former cavity of the tunnel former.

[0019] Preferably, the pressure element can be attached to the share so that it is supported by the share. Alternatively, the pressure element can be attached directly or indirectly to the share support so that it is supported by the share support.

[0020] According to a preferred embodiment, a pressure body height adjustment device coupled to the pressure body can be attached to the share or the share carrier. This device allows for adjusting the vertical distance between the pressure body and the share or between the pressure body and the share carrier, and thus for adjusting the pressure force of the pressure body on the soil. This ensures, to a particularly high degree, that the furrow previously created in the soil by the pre-cutter and the share can be reliably closed by the pressure body.

[0021] The pressure body height adjustment device can be coupled to a second spring with an adjustable spring force to set different pressure forces of the pressure body against the soil. This allows for the adjustment of the pressure force depending on the specific soil type and conditions.

[0022] According to a preferred embodiment, a boom can be attached to the share carrier, to which a height guide body for guiding the height of the furrow former is attached, which, viewed in a fifth direction away from the share to the rear, is arranged behind the pressure body and / or behind the furrow former and is designed in such a way that it can be supported on the ground.

[0023] The height guide body can be rotatable about a horizontal axis of rotation in a service position. The height guide roller can be either a height guide roller or a height guide cylinder.

[0024] According to a particularly preferred embodiment, it can be provided that a height guide body height adjustment device coupled to the height guide body is attached to the boom for setting a different vertical working depth of the tunnel former in the soil.

[0025] According to a further development, it can be provided that the height guide body is pivotably mounted on the boom about a height guide body pivot axis. This allows the height guide body height adjustment device to set different vertical working depths of the channel former such that the channel former can pivot relative to the boom about the pivot axis.

[0026] Further advantages, features and aspects can be found in the following description section, in which the invention is explained in more detail using an exemplary embodiment.

[0027] They show Figure 1 shows a bait laying machine in a perspective view; Figure 2 shows the bait laying machine according to Figure 1 in a side view; Figure 3 an enlarged section of the Figure 2 Figure 4 shows the share of the bait laying machine coupled to the mechanism in a perspective view; Figure 5 shows the share coupled to the mechanism in a side view; Figure 6 shows a tractor for coupling to the bait laying machine and the bait laying machine in a working position in which the pre-cutter and the share are each partially in the ground or soil and in which the path former is at a certain working depth in the ground or soil.

[0028] The in Figure 1The mobile bait laying machine 10 shown comprises the mobile towing trailer 12 and serves for the concealed placement of bait, preferably bait, especially poison bait, in a tunnel 13 artificially created in the ground or soil 11 by means of the bait laying machine 10. The bait laying machine 10 or the towing trailer 12 comprises a plow body 14 with a share (plow) 15 having a share-cutting edge 16. The bait laying machine 10 or the towing trailer 12 also comprises a pre-cutter 17, which can also be called a coulter, for cutting the soil 11 in front of the share 15. The pre-cutter 17 is a disc body in the form of a disc coulter or a coulter disc, i.e., a type of disc knife. The disc body 17 is rotatable about a horizontal pre-cutter pivot axis 18 in the operating position 84 of the bait laying machine 10 or the towing trailer 12. The bait laying machine 10 or the towing trailer 12The tow trailer 12 also includes a pressure body 19 for closing a furrow or slit previously created in the ground or soil 11 by means of the pre-cutter 17 and the share 15. The pressure body 19 is a pressure roller. The pressure body 19 is rotatable about a pressure body pivot axis 20 which is horizontal in the operating position 84. The pressure body 19 is articulated to a pressure body bracket 21, which is detachably attached in the area of ​​an upper end 22 of the share 15 and which is supported by the share 15. The share 15 is detachably attached to a share carrier 26 via a mechanism 24 and a bracket 25. The share beam 26 extends along its longitudinal axis 27 in a longitudinal direction 52 parallel to the axis of rotation 20 of the pressure body. The share beam 26 can, as shown, have a square cross-section 28. The share beam 26 is an elongated beam profile.

[0029] The pressure body 19, which is rotatable about the pressure body's axis of rotation 20, has engagement elements 30, for example teeth, around its outer circumference 29. These engagement elements, when the pressure body 19 rests on the ground or on the surface 11, ensure more reliable rotation of the pressure body 19 about its axis of rotation 20. The pressure body 19, which is rotatable about its axis of rotation 20, is coupled to a metering device 31 for dispensing the bait, which can be driven by the pressure body 19. A reservoir 32 for receiving the bait dispensed by the metering device 31 is associated with the metering device 31. The metering device 31 can be a metering disc rotatable about a pivot axis. The metering disc can have one or more through-openings or bores.boreholes for metered dispensing of the bait from the storage container 32 into a tunnel former cavity 44 of a tunnel former 43, which will be discussed in more detail below.

[0030] A boom 33 is attached to the share carrier 26 via the bracket 25. The boom 33 has a front boom end 34, which is attached to the bracket 25, and a rear boom end 35 extending away from the front boom end 34. A height guide body 36 is articulated in the area of ​​the rear boom end 35, which points backward away from the pre-cutter 17 or the pressure body 19. This height guide body is a height guide roller. The height guide body 36 is rotatable about a height guide axis 37, which is horizontal in the operating position 84. The height guide axis 37 extends parallel to the pressure body axis 20 and parallel to the pre-cutter axis 18.

[0031] A height-adjustable support foot 39 for securely positioning the bait laying machine 10 on the ground 11 is attached to the share carrier (beam profile) 26 via a support foot bracket 38. The support foot 39 is supported by the share carrier 26. To securely position the bait laying machine 10, the support foot 39 is moved from the Figure 1 , 2 and 6 The support foot transport position 40 shown is transferred vertically downwards into a support foot support position on the ground 11 in such a way that the pre-cutter 17 does not touch the ground 11.

[0032] In its operating position 84, the share 15 extends vertically from top to bottom in a second direction 49. The share 15 has a lower share end 22 to which a partially hollow tunnel former 43 is attached for forming a tunnel 13 in the ground or soil 11 for depositing the bait. The tunnel former 43 extends longitudinally 45 along a longitudinal axis of the tunnel former 43 and in the direction of travel 42 of the towing trailer 12. The tunnel former 43 has a front end 46 pointing towards the pre-cutter 17 for forming the tunnel 13 in the soil 11. The tunnel former 43 has a cavity 44 for the bait to be deposited in the tunnel 13 in the ground or soil 11. The tunnel former cavity 44 of the tunnel former 43 opens into a lower tunnel former opening 48 extending in the longitudinal direction 45 for the deployment of the bait into the tunnel 13 in the ground or soil 11.The groove former 43 forms a downwardly tapering profile contour 41 with the lower share end 23 in the direction of travel 42. Specifically, the lower share end 23 at its front share end 83 and the groove former 43 at its front groove former end 46 form the profile contour 41, which extends downwards and rearwards 51, 53 in a monotonous manner. Consequently, the groove former 43 does not project forwards in the direction of travel 42, or in a first direction 42, preferably towards the pre-cutter 17, beyond the lower share end 23 of the share 15. The front groove former end 46 of the groove former 43 connects directly to the share cutting edge 16 of the share 15, which points forwards in the first direction, or direction of travel 42, preferably towards the pre-cutter 17. The share 15 orThe share cutting edge 16 of the share 15 is, viewed in a second direction 49 downwards towards the groove former 43, inclined or chamfered or formed with a first bevel 60 in a third direction 51 away from the pre-cutter 17. The front groove former end 46 of the groove former 43 is inclined or chamfered or formed with a second bevel 85 in a fourth direction 53, preferably away from the pre-cutter 17, starting from the front share end 83 of the lower share end 23 of the share 15.

[0033] The tunnel former 43 is designed with a substantially cylindrical tunnel former tube 54 extending in the longitudinal direction 45. The tunnel former tube 54 has substantially cylindrical tunnel former tube walls 55 that define and encompass the tunnel former cavity 44. The tunnel former tube walls 55 maintain a maximum tunnel former tube wall internal distance 56 or a maximum tunnel former internal diameter 56 relative to each other. The tunnel former opening 48 of the tunnel former tube 54, extending in the longitudinal direction 45, has, viewed perpendicular to the longitudinal direction 45, a tunnel former opening width 57 which essentially corresponds to the maximum tunnel former tube wall inner distance 56 or the maximum tunnel former inner diameter 56 of the tunnel former tube 54, or which is only slightly smaller than the maximum tunnel former tube wall inner distance 56 or the maximum tunnel former inner diameter 56 of the tunnel former tube 54.The tunnel former opening 48 of the tunnel former tube 54, extending in the longitudinal direction 45, is produced by separating or cutting off a lower tunnel former tube part of the essentially circular cylindrical tunnel former tube 54.

[0034] The share 15 is pivotably mounted relative to a share carrier 26 by means of a mechanism 24. The mechanism 24 is designed as a four-part, four-link linkage with parallel axes of rotation 71, 72, 73, 74 of its joints 67, 68, 69, 70. The linkage is a guide mechanism comprising a first linkage 58, a second linkage 59, a first guide arm 61 functioning as a first rocker arm, and a second guide arm 62 functioning as a second rocker arm, forming a double arm. The first guide arm 61 has a first guide arm end 63 and a second guide arm end 64 extending away from it. The second guide arm 62 has a first guide arm end 65 and a second guide arm end 66 extending away from it. The first coupling 58 is part of the bracket 25 orof the share carrier 26 and the second coupling 59 is part of the share 15. The first guide arm 61 is rotatably connected to the first coupling 58 at the first guide arm end 63 of its guide arm ends 63, 64 via a first joint 67 about a first axis of rotation 71 of the parallel axes of rotation 71, 72, 73, 74 and is rotatably connected to the second coupling 58 at the second guide arm end 64 of its guide arm ends 63, 64 via a second joint 68 about a second axis of rotation 72 of the parallel axes of rotation 71, 72, 73, 74. The second guide arm 62 is rotatably connected to the first coupling 58 at the first guide arm end 65 of its guide arm ends 65, 66 via a third joint 69 about a third axis of rotation 73 of the parallel axes of rotation 71, 72, 73, 74 and is rotatably connected to the second coupling 59 at the second guide arm end 66 of its guide arm ends 65, 66 via a fourth joint 70 about a fourth axis of rotation 74 of the parallel axes of rotation 71, 72, 73, 74.In the operating position 84, the first guide arm 61 is an upper guide arm of the guide arms 61, 62. In the operating position 84, the second guide arm 62 is a lower guide arm of the guide arms 61, 62. The first guide arm 61 has a first guide arm length 75. The second guide arm 62 has a second guide arm length 76. The second guide arm length 76 of the second guide arm 62 is greater than the first guide arm length 75 of the first guide arm 61. The mechanism 24 includes a first spring 77, which is articulated on one side to the bracket 25 or the share carrier 26 and on the other side to the share 15. A spring force can be exerted by means of the first spring 77 to dampen a pivoting movement of the share 15 relative to the share carrier 26.

[0035] In the area of ​​the upper end 22 of the share 15, a pressure body height adjustment device coupled to the pressure body 19 is attached to the share 15 for adjusting a different vertical distance between the pressure body 19 and the share 15 or between the pressure body 19 and the share carrier 26 and thus for adjusting a different pressing force of the pressure body 19 on the soil or on the ground 11.

[0036] A boom 33 is attached to the share carrier 26 by means of the bracket 25, and the height guide body 36 for guiding the height of the furrow former 43 is attached to this boom. The height guide body 36 is located behind the pressure body 19 and behind the furrow former 43 in a fifth direction 79, viewed from the share 15 to the rear, and is designed so that it can be supported on the ground or soil 11.

[0037] In the illustrated embodiment, the bait laying machine 10 or the towed trailer 12 comprises two identical bait laying units for the concealed placement of bait, preferably bait, particularly poison bait, in separate artificially created channels in the soil. The bait laying machine comprises two substantially identical bait laying units 80, 80.1, and 80.2, including, among other things, two substantially identical pre-cutters 17, two substantially identical plow bodies 14, two substantially identical pressure bodies 19, and two substantially identical height control bodies 36. Consequently, this bait laying machine 10 can simultaneously create two channels 13 for placing bait in the soil 11, which can be closed again with the respective pressure body 19. It goes without saying that the bait laying machine can also be equipped with more than two, i.e., with three or four, essentially identical bait laying units.

[0038] On the share carrier or carrier profile 26 of the bait laying machine 10, two identical brackets 25 are detachably attached to each other at an adjustable transverse distance, viewed in the longitudinal direction 27 of the carrier. The respective plow body 14, the respective share 15 with the respective furrow former 43, the respective press plate 19, and the respective height guide 36 are attached to each bracket 25 and are each supported by the share carrier 26. The two pre-cutters 17 have an adjustable transverse distance from each other, viewed in the longitudinal direction 27 of the carrier. The two shares 15 have an adjustable transverse distance from each other, viewed in the longitudinal direction 27 of the carrier. The two press plates 19 have an adjustable transverse distance from each other, viewed in the longitudinal direction 27 of the carrier.The two height guide bodies 36 have an adjustable height guide body transverse distance to each other when viewed in the longitudinal direction 27 of the support. How the bait laying machine works

[0039] When the bait laying machine 10 or the towed trailer 12 is moved forward in the towing direction 42 or in a travel direction 82 by means of a mobile work machine 81, for example, a tractor, and lowered from a transport position in which all its components are lifted from the ground or soil 11, into the working position 84, also referred to as the operating position, in which part of the pre-cutter 17 and the path former 43 have been transferred into the ground or soil 11, the bait laying machine 10 first cuts the ground or soil 11 into a slit shape with the pre-cutter 17 in the form of a disc coulter. The resulting slit can also be called a furrow. This is followed by the share 15, at the lower share end 23 of which the path former 43 is attached, which encompasses the downwardly open path former tube 54. The tunnel former 43 can be used to create channels in the soil or...An artificial tunnel 13 is created in the soil 11 for placing bait, preferably poison bait. The tunnel former 43 also serves to place the bait in the tunnel 13. Behind the share 15 follows the heavy pressure body 19, in the exemplary embodiment the pressure roller rotatable about the pressure body's axis of rotation 20, which on the one hand securely closes the slot formed by the disc coulter 17 and the share 15 and on the other hand provides the drive for the metering device 31 for metering the bait. Adjusting the pre-cutter (cutter)

[0040] The six-disc cutter 17 should cut a slot approximately 4 to 8 cm deep into the ground or soil 11. The depth is adjusted using a grid of holes 86. The holes in the grid 86 are spaced approximately 23 mm apart. A bolt or screw must be positioned in the correct grid for this purpose. The cutting force should be set so that the six-disc cutter 17 can deflect upwards when passing over hard objects such as stones or rocks without the machine 10 lifting, while simultaneously providing sufficient cutting force to create the slot to the desired depth in the ground or soil 11. To increase the cutting force, the spring 87 can be tightened using a nut. To decrease the cutting force, the spring 87 can be loosened using the nut. A combination wrench can be used for both adjustments. Stone protection setting

[0041] The optional stone protection device 88 can preferably be a hydraulic stone protection device. This device can be designed such that, at a specific trigger pressure, the mechanism 24 causes the share 15, together with the channel former 43, to pivot upwards in order to prevent major damage to the share 15 and / or the channel former 43 from hard objects, for example, stones or rocks on or in the soil 11, and / or to prevent the share 15 and / or the channel former 43 from becoming stuck on the hard objects. The stone protection device 88 can be controlled by means of a hydraulic control, preferably manually controlled, such that a specific maximum hydraulic pressure is initially applied. Subsequently, the hydraulic control can be switched to a so-called float control.The hydraulic pressure can then be released to a desired value using the hydraulic control, which can be read on a manometer and at which the stone protection device 88 should trigger. Adjusting the working depth of the tunnel former

[0042] The working depth of the channel former 43 is selectable between ≥120 mm and 220 mm in 20 mm increments 91 by means of a height guide body height adjustment device 50, which is coupled to the height guide body 36. The desired working depth is set using a scale 89. To set the working depth, a plug 90 must be inserted into the designated cutouts of the scale 91 and secured with a locking device, for example, a snap-in plug. Two plugs 90 must be inserted for each laying unit 80; 80.1, 80.2. The working depth must be set identically on both sides, i.e., for both laying units 80; 80.1, 80.2. This work can be carried out using the combination tool wrench, which is inserted into the designated hexagon. Adjusting the sealing roller

[0043] The sealing roller 19, also referred to as the pressure roller, must always reliably close the slit created in the soil 11 by the disc 17 and the share 15. The height of the sealing roller 19 is adjusted using a grid of holes. The holes in the grid are spaced approximately 23 mm apart. In its basic setting, the sealing roller 19 should always be set approximately 4 to 6 cm lower than the height control roller 36. To achieve this, a first screw 92, whose bolt extends through an arc-shaped or curved slot 93, must be loosened, and a second screw 94 must be positioned in the correct grid. The first screw 92 must then be tightened again. The pressure force should be adjusted so that the sealing roller 19 always exerts the force sufficient to close the previously created slit.To increase the contact pressure, the spring 95 is tightened using a nut 96. Alternatively, the distance between the pressure roller 19 and the height control roller 36 can be increased (again). To decrease the contact pressure, the spring 95 is loosened further using the nut 96. Alternatively, the distance between the pressure roller 19 and the height control roller 36 can be decreased (again). The combination wrench can be used for both adjustments. Attachment to a tractor

[0044] The bait-laying machine 10 can be attached to a tractor 81 via its three-point linkage, using its lower links 97 and top link 98. The lower links 97 must be fixed in the center to prevent the bait-laying machine 10 (also referred to as an implement) or the towing trailer 12 from swinging. The lower links 97 must be adjusted to the same height on both sides. The implement (bait-laying machine 10) is then attached to the lower links 97. The existing coupling pins must be properly secured. The top link 98 is then attached. In the working position 84 of the share 15 (also referred to as a plow) with the furrow former 43, the lower links 97 of the tractor 81 should be positioned slightly downwards towards the tractor or parallel to the ground 11 (i.e., from the mounting point of the implement 10 frame towards the tractor 81). In the working position 84 of the plow 15, the top link 98 of the tractor should be engaged.Tractor 81 slopes slightly towards this point. Share 15 can also be referred to as a plowshare. Field deployment

[0045] During field operation, it is important to note that the lowered machine 10 must not be driven in reverse. The machine 10 and its components are designed exclusively for forward travel. Tight turns should be avoided with the machine 10 lowered. REFERENCE MARK LIST

[0046] 10 Bait laying machine / machine / device 11 Soil / earth / soil 12 Towing trailer 13 Gear 14 Plough body 15 Share (plough) 16 Share cutting edge 17 Pre-cutter / cutter / disc coulter / six-disc 18 Pre-cutter pivot axis 19 Pressing body / pressing roller / closing roller 20 Pressing body pivot axis 21 Pressing body bracket 22 (Upper) end of share / share end 23 (Lower) end of share / share end 24 Mechanism / linkage / guide gear 25 Bracket 26 Share support / support profile 27 Support longitudinal axis 28 Cross-section of 26 29 Outer circumference of 19 30 Engagement body / teeth 31 Metering device 32 Hopper 33 Boom 34 (front) boom end of 33 35 (rear) boom end of 33 36 Height guide body / height guide roller 37 Height guide body pivot axis 38 Support foot bracket 39 Support foot 40 Support foot transport position 41 Profile contour 42 (first) direction / tow direction / forward 43 Band former 44 Bait laying channel / band former cavity 45 Longitudinal direction (to 43) 46 Front band former end 47 Rear band former end48 (lower) channel former opening 49 (second) direction / downwards 50 Height guide body height adjustment device 51 (third) direction / backwards 52 Beam longitudinal direction 53 (fourth) direction / backwards 54 Channel former tube 55 Channel former tube wall 56 (maximum) Channel former tube wall inner distance / (maximum) Channel former tube wall inner diameter 57 Channel former opening width 58 (first) coupler of 24 59 (second) coupler of 24 60 (first) inclined (of 15, 16) 61 (first) (upper) guide arm / swing 62 (second) (lower) guide arm / swing 63 (first) guide arm end of 61 64 (second) Guide arm end of 61 65 (first) Guide arm end of 62 66 (second) Guide arm end of 62 67 (first) Joint of 61 68 (second) Joint of 61 69 (third) Joint of 62 70 (fourth) Joint of 62 71 (first) Axis of rotation of 67 72 (second) Axis of rotation of 68 73 (third) Axis of rotation of 69 74 (fourth) Axis of rotation of 70 75 (first) Guide arm length of 61 76 (second) Guide arm length of 62 77 (first) Spring (at 24)78 Pressure body height adjustment device 79 (fifth) direction / rearward 80 Bait laying unit / laying unit 80.1 (first) bait laying unit 80.2 (second) bait laying unit 81 (mobile) work machine / tractor 82 Direction of travel 83 (front) share end 84 Operating position / working position (of 10) 85 (second) slope (of 43, 46) 86 Hole grid (at 17) 87 (third) spring (at 17) 88 Stone retainer 89 Scale 90 Plug 91 (Hole) grid (to 50) 92 (first) screw 93 (arc-shaped) slotted hole 94 (second screw) 95 (second) spring (to 50) 96 Nut 97 Lower link 98 Top link

Claims

1. A bait laying machine (10) for the concealed depositing of bait in an artificially created tunnel (13) in the ground (11), comprising a towed trailer (12) which comprises a plough body (14) with a share (15), wherein the share (15) has a lower share end (23) to which a tunnel former (43) is attached, wherein the tunnel former (43) extends in a towing direction (42) of the towed trailer (12) and comprises a front tunnel former end (46) pointing in the towing direction (42) for forming a tunnel (13) in the ground (11), as well as a bait depositing channel (44) for dispensing the bait to be deposited in the tunnel (13), characterised in that the tunnel former (43), in the towing direction (42), forms a profile contour (41) with the lower share end (23) that flows monotonically downwards.

2. The bait laying machine according to claim 1, characterised in that the front tunnel former end (46) of the tunnel former (43) adjoins directly a share cutting edge (16) of the share (15) that points forward in the towing direction (42).

3. The bait laying machine according to claim 1 or 2, characterised in that one or the share cutting edge (16) of the share (15), viewed in a second direction (49) downwards towards the tunnel former (43), is designed to be inclined or bevelled rearwards in a third direction (51) or with a first slope (60).

4. The bait laying machine according to any one of the preceding claims, characterised in that the front tunnel former end (46) of the tunnel former (43), starting from the lower share end (23) of the share (15), is designed to be inclined or bevelled rearwards in a fourth direction (53) or with a second slope (85).

5. The bait laying machine according to any one of the preceding claims, characterised in that the tunnel former (43) is designed with a substantially cylindrical tunnel former tube (54) extending in the longitudinal direction (45), which has substantially cylindrical tunnel former tube walls (55) that delimit a tunnel former hollow space (44) and which define between them a maximum tunnel former tube wall inner spacing (56) or a maximum tunnel former inner diameter (56), and that a tunnel former opening (48) of the tunnel former tube (54) extending in the towing direction (42), viewed perpendicularly to the towing direction (42), has a tunnel former opening width (57) which substantially corresponds to the maximum tunnel former tube wall inner spacing (56) or the maximum tunnel former inner diameter (56) of the tunnel former tube (54) or which is only slightly smaller than the maximum tunnel former tube wall inner spacing (56) or the maximum tunnel former inner diameter (56) of the tunnel former tube (54).

6. The bait laying machine according to any one of the preceding claims, characterised in that the tunnel former opening (48) of the tunnel former tube (54) extending in the towing direction (42) for dispensing the bait into the tunnel (13) is produced by separating or cutting off a lower tunnel former tube part of the tunnel former tube (54).

7. The bait laying machine according to any one of the preceding claims, characterised in that the share (15) is pivotably mounted on a share carrier (26) relative thereto by means of a mechanism (24).

8. The bait laying machine according to claim 7, characterised in that the mechanism (25) comprises or is designed as a four-bar and four-joint linkage with parallel pivot axes (71, 72, 73, 74) of its joints (67, 68, 69, 70).

9. The bait laying machine according to claim 8, characterised in that the linkage (25) is a guidance linkage which comprises a first coupler (58), a second coupler (59), a first guide arm (61) functioning as a first swing arm, and a second guide arm (62) functioning as a second swing arm, which form a double arm.

10. The bait laying machine according to any one of claims 7 to 9, characterised in that the mechanism (25) comprises a first spring (77) which is articulated on the one hand to the share carrier (26) and on the other hand to the share (15) and by means of which a spring force can be exerted in order to damp a pivoting movement of the share (15) relative to the share carrier (26).

11. The bait laying machine according to any one of the preceding claims, characterised in that the towed trailer (12) comprises a pressure body (19) for closing a furrow previously created in the ground (11) by means of the share (15), wherein a pressure body height adjustment device (78) coupled to the pressure body (19) is attached to the share (15) or to the share carrier (26) for setting a variably large vertical distance between the pressure body (19) and the share (15) or between the pressure body (19) and the share carrier (26) and thus for setting a variably large pressure force of the pressure body (19) on the ground (11).

12. The bait laying machine according to claim 11, characterised in that the pressure body height adjustment device (78) is coupled with a second spring (95) with an adjustable spring force, for setting a variably large pressure force of the pressure body (19) on the ground (11).

13. The bait laying machine according to any one of the preceding claims, characterised in that an outrigger (33) is attached to the share carrier (26), on which a height guidance body (36) for the height guidance of the tunnel former (43) is mounted, which, viewed rearwards away from the share (15) in a fifth direction (79), is arranged behind the pressure body (19) and / or behind the tunnel former (43) and is designed such that it can be supported on the ground (11).

14. The bait laying machine according to claim 13, characterised in that a height guidance body height adjustment device (50) coupled to the height guidance body (36) is attached to the outrigger (33) for setting a variably large vertical working depth of the tunnel former (43) in the ground (11).

15. The bait laying machine according to claim 13 or 14, characterised in that the height guidance body (36) is pivotably articulated to the outrigger (33) about a height guidance body pivot axis (37).