DK174359B1 - Transport unit for decompression of soil areas and method for controlling ground spears on a transport unit. - Google Patents

Description

The invention relates to a transport unit for decompression of soil areas comprising a ground spike, which ground spike comprises an upper end and a tapered lower end relative to the upper end, which spout is injected into the soil area by compressed air to provide an explosion. the lower end of the ground spike, which further comprises a frame, which frame comprises a shear means and a pressure means, on which at least one ground spear is disposed, which shear means and which pressure means provide a horizontal and vertical, displacement of the earth spears relative to the frame.

The invention also relates to a method for controlling ground spears on a transport unit for providing decompression of soil areas, for example grassland.

Swedish Patent Specification No. SE 44 106 B discloses a system for decompression of cultivated land, for example grassland, comprising an air compressor connected via a pipe connection or a hose connection to a container containing sand, fertilizers or the like. From the container, the pipe connection, or hose connection, is led to a handle with a valve and a tubular probe that can be adjusted vertically. At its preferably tapered end, the probe comprises several holes, which open from a to maintain clean supply line while activating a valve on an injector. Through the supply line, the soil can be fed with fertilizer or other along with the air flow.

Using the system, the probe is inserted into the ground to the final depth, corresponding to the desired depth of hatch. Then, through the holes of the probe, compressed air is supplied by actuation of the valve, whereby the soil layer which is above the tip of the probe is blasted. In the resulting cracks, upon further activation of the valve, sand, fertilizers or the like may be supplied from the container.

The system can be further designed to comprise several probes and mounted on a support arm included in a three-point suspended implement, for example pulled by a tractor. The decompression can be done by either a continuous process or a discontinuous process, so that a larger area of soil can be decompressed at a time.

10 In the continuous process, there is an appropriate balance between the forward speed and the time the probes should be in the ground. However, this requires a larger mechanical construction, since the probes must be brought down into the ground simultaneously and the probes are thereby forced to be located at a relatively large distance between them.

15

During the discontinuous process there will be a stop corresponding to the time the probes are on the ground. This process is thus time consuming.

For both systems, the respective heavy construction will leave marks on the ground surface and thus require a subsequent drum.

A similar system with a single probe will, as stated above, be extremely time consuming and therefore unsuitable for larger land areas.

25 For all systems, a further knowledge of the condition of the soil is required, as well as the depth of the probe to be lowered in order for the applied fertilizer or otherwise to be optimally absorbed into the soil. Also, after the blasting of the earth, irregularities will occur. As soil erosion and sand, fertilizers or the like are not combined, this will cost more time.

EP 0134,350 discloses a transport unit for aeration of lawns comprising a rotatable vertical lift frame, attached to a vehicle, for example a tractor to which the lift frame, and on each side, is located an aeration unit, the distance between these can be adjusted.

The aeration unit comprises a frame on which is mounted an accumulator and a vertical air pressure hammer. A grounding spear is placed on the air pressure hammer which is placed in the ground by means of the air pressure hammer and an actuator located on the vehicle. The frame is supported by grooves and by means of laid rolls in the groove, the frame as well as the ground spear can be displaced horizontally.

10

After aeration / oxygenation at a predetermined depth, the ground spike is lifted again by means of the air pressure cylinder and the actuator, to a, also predetermined, height above the ground surface. The lifting frame is thus raised to a predetermined height by the actuator and by further pushing a bracket on the front of the accumulator 15 simultaneously raises the ground spear from the ground and is brought to a predetermined height. Both the positioning and raising of the spear is controlled by a control system.

Thus, the control system comprises a starting unit, a ground depth detector for detecting whether the ground spike is at the predetermined depth, a stop unit consisting of a push button, a ground control switch also consisting of a push button and a compressed air source. The start unit, stop unit and push button are all operated from the driver's seat in the tractor.

The ground depth detector comprises a frame height detector which detects whether the lift frame is at the predetermined height above the ground surface, as well as a ground depth depth detector located between the holding frame and the aeration unit. The frame height detector comprises a frame height sensor including levers rotatable on both sides of the lift frame and the grounding depth detector includes a cam for determining the grounding depth as well as a depth sensor.

When using the transport unit, it is transported to the desired location with the raised frame and aeration units 30 4 DK 174359 B1. By pushing the starter, the frame is lowered to the predetermined height above the ground surface, using the frame height detector, so that the lift frame as well as the lower end of the ground spit is in contact with the ground surface. The activation of the detector causes a connection with the air hammer to be established, which then shoots the ground spike into the ground. When the ground spear is at its predetermined depth, the ground depth detector will be activated to indicate that the ground spear is at the predetermined depth whereby the control system automatically saves the position. When the ground spike is subsequently raised again, the stop unit is activated and the ground spike is brought to the predetermined height above the ground surface. The transport unit is then brought to the next location and the process repeated.

Thus, at the specified decor priming, both ground skewers are pushed into the ground simultaneously, thus not causing the vehicle to simultaneously move in the forward direction. When decorating large areas, this is an extremely slow method due to the many stops, while requiring great precision of the driver to activate the various units at the right time. In addition, the soil is not supplied with sand or foodstuffs during decor priming. In doing so, the method must be repeated frequently, thereby increasing the risk of damage to the upper soil layer.

It is the object of the present invention to provide a transport unit which solves the above problems, and wherein transport means are arranged or arranged. partly to be adjustable to the desired depth so that manure or other can be applied optimally and collectively, and secondly that the transport unit can decompress over a larger area without causing damage to the upper soil layer and this decorum priming is provided. continuously and automatically.

This object is achieved with a transport unit of the kind specified in the introduction, and in which a soil substance is also supplied at the upper end of the soil spear and by means of which holes are provided at the tapered lower end, oriented towards the soil area, from which 5 holes and the undersurface of the soil, the feedstock being supplied and the pressure means comprising a pneumatic cylinder acting for each ground spike and the shear means comprising at least one parallel to the frame and, in the direction of travel of the transport unit, a parallel guide rail, on which a guide rail is mounted, on which the spear is and between which guide rails are arranged rollers connected to each other by a wire, and the control means comprise at least four sensors, two sensors, a first sensor and a third sensor for release of compressed air, a second sensor for supply of the raw material and a fourth sensor for registration of soil -the maximum forward of the spear / ground spears respectively b ague position.

Hereby a transport unit is obtained, where the earth spears can be set partly in relation to the transport unit's transport from one area to another and partly in relation to the use of the transport unit. When the transport unit is transported, air 15 pumps into cylinders, which are attached partly to the arms of the frame and partly to the wheels of the transport unit, whereby the transport unit raises and the ground skewers become free of the driving surface. This will not damage the spears during transport. During decompression, the transport unit is similarly lowered by closing the air out of the cylinders and one ground skewer is placed to assume a forward position and the other ground skewer a rear position. By activating compressed air, the front ground spear is sent into the ground and due to the displacement means, the ground spear, during the forward movement of the transport unit, will slide along the frame to a rear position while the remaining ground spear will assume a front position. Thus, when the rear ground spear assumes a forward position and the ground spear placed in the ground assumes a rear position, the front ground spear will be sent into the ground and the rear ground spear will be picked up accordingly. The spears are thus activated correctly in relation to each other, that is alternately, so that the process becomes continuous.

The respective positions are recorded by sensors, thereby providing a continuous and accurate shift between the working grounders and partly an accurate indication of the position of the individual grounders. Thus, the transport unit will be able to decompress without stopping the same, whereby larger areas can be decompressed even using a few or a single ground spear.

By providing a transport unit according to the invention and as further stated in claim 2, it is achieved that the grounding spear (s), partly when transporting the transporting unit, does not travel along the road surface and partly during use can be pulled up the ground.

By providing a transport unit according to the invention and as further stated in claim 3, it is achieved that no sand is left on the surface and consequent wear on tools. Furthermore, the work process saves time.

By providing a transport unit according to the invention and as further stated in claim 4, it is achieved that the ground spears and the ground roll become free of the road surface and 15 are not damaged during transport from, for example, the garage to the ground area.

According to the preamble of claim 5, the invention also relates to a method for controlling soil skewers on a transport unit for decompressing areas, which soil skewers comprise an upper end and a tapered lower end, which is injected into the soil area by compressed air, relative to the upper end. to provide a blasting of the lower end of the ground spear.

tparnniirincirngrlon or \ f ι η Ηλ) ι? ώ r * v Ar * waH of Hor ί Ηώη γλ \ / γο unHo ii \ ^ \ I ivjbi \ idus- * · i 11 ΙΟ1 IVJV- · υρι ιι iuv / ΐον-η ι v ^ · ii \ L / i lUv / iivyi iv-ι vuu, ul i uuii t / Vio ii vu of the soil spear is added to a soil and in the tapered lower), oriented towards the soil area, holes are made under which blasting sand optionally, in combination with fertilizers or the like, is supplied from the abutment holes and the conveying unit comprises at least one parallel guide rail on which (s) guide rail (s) at least one earth spear is placed and attached to a compressed air cylinder (s). 30 guide rails / guide rails, respectively, which compressed air cylinders during the forward movement of the transport unit provide a vertical, horizontal, displacement of the ground spike (s) relative to the frame of the transport unit and alternately relative to each other, which offset and alternate offset are activated by the position / positions of the grounding / grounding, which / which position / positions are detected by sensors, and which alternating offsetting of each grounding can be further divided into two categories, process cycles.

Hereby a transport unit is obtained which, due to extensive sensors, causes the earth spears to work partly offset and partly offset relative to the frame in such a way that the position of one ground spear relative to the frame determines the position of the other earth spear and vice versa. Thus, during the movement of the transport unit, a continuous and precise shift between the ground spikes will be provided and partly that only one ground spear is in the ground at a time.

15

By using a method according to the invention and as set out in claim 6, it is achieved that the transport unit can be transported to a desired soil area to be decompressed, without the risk of damaging the ground skewers during travel.

By using a method according to the invention and as set out in claim 7, it is achieved that the position of one ground skewer activates the other ground skewer so that the ground skewers work alternately and that the process becomes continuous and hence rapid.

The invention further relates to the use of the transport unit according to claims 1-5 for practicing method 5-7.

The invention will now be explained in more detail with reference to the drawing, in which: FIG. 1 is a perspective view of a transport unit according to the invention, FIG. 2 shows a single ground spear for the transport unit shown in FIG. 1; and FIG. 3 shows a section of a nozzle for dosing sand, fertilizers or the like and activating the nozzle by applying sand, fertilizers or the like to the soil.

Figure 1 shows in perspective a transport unit 1 according to the invention, comprising a frame 4, to which frame 4, and on two opposite sides, a wheel 13 is arranged.

10 The frame 4 has no clear design and can in principle assume any shape. In this embodiment, the frame 4 comprises two parallel-displaced longitudinal sides 18 attached to each other by two transverse sides 19.

On one transverse side 19, and by extension thereof, is attached a pentagonal profile 20 15 to provide the front of the transport unit, which profile 20 comprises two short parallel offsets and, in relation to the longitudinal sides 18 of the frame, also parallel offset, long sides 20 '. Extending along the longitudinal sides 20 'are two inclined sides 20 "which are bent together to secure a drawbar 20"'. On the drawbar 20 "'is provided a pulling device 21, which pulling device 21 can be, for example, a connection or a ball coupling. known, for example, from trailers, which towing device 21 is placed in connection with the towbar of a tractor or similar vehicle.

On one side of the pentagonal profile 20, on the inclined side 20 ”is an adjustable support wheel! 22 comprising a wheel 22 'which abuts on a support when the transport unit 1 is not in use, and a rod 23 attached to the pentagonal profile 20. The support wheel 22 is vertically adjusted by a handle 23' which is immediately located in extension of the support wheel. rod 23. However, the location of the support wheel 22 may also be made elsewhere than said one.

On the other transverse side 19 is attached a ground roller 24 comprising two parallel legs 25 which are oriented towards the ground support. In between the legs 25 is placed a roller 26 which abuts the ground support and thus provides a drum of the soil after the decompression.

5 On each longitudinal side 18 is placed an arm 12, on which is placed a wheel 13. I

extending the junction point between the arm 12 and the wheel 13, and orienting away from the driving support, is a cylinder 14 in the form of a compressed air container. The arm 12 can thus by means of compressed air make a vertical displacement, whereby the frame 4 can be raised or lowered, respectively.

Between the two transverse sides 19 and perpendicular thereto is arranged a displacement means 5 comprising two guide rails 15, each guide rail 15 being attached to the transverse sides 19 by a carriage 16, which is either attached to the upper side 19 of the transverse side 19 '. or underside 19 ". In this embodiment, the plates 16 are attached to the upper side 19 'of the transverse side.

Each guide rail 15 comprises two, in relation to the longitudinal sides 18, parallel-displaced tubes, an inner tube 15 'and an axis parallel outer tube 15'. The outer tube 15 "is located at the longitudinal side 18, however, without coming into direct contact with the 20 longitudinal side 18, while the inner tube 15 'is located at a given distance from the outer tube 15" and oriented towards the other. guide rail 15.

On each guide rail 15, each tube comprises two enclosed and staggered slide arms 27 secured to each other by a carriage 16. The carts 16 can assume any configuration and in this embodiment are longitudinal rectangular in orientation along the interior pipe 15 'and outer pipe 15' respectively. Essential to the invention, however, is partly that the slides 16 do not abut each other such that the distance between the two tubes, the inner tube 15 'and the outer tube 15', respectively, is substantially maintained and partly that the sled 16 on the inner tube 15 ' lies opposite the carriage 16 on the outer tube 15 ”. On the slides 16 is placed an upper plate 16 'which extends substantially along the transverse direction of the plates to provide a bridge 17 between the two tubes 15', 15 ". The upper plate 16 'can likewise assume any shape, but it is essential that it does not exceed the boundary of the frame against the wheel 13 or that both the upper plates 16' abut each other.

5 On each of the upper plates 16 ', and between the outer pipe 15' and the inner pipe 15 ', respectively, a ground spike 2 and a displaced nozzle 8 for supplying sand, fertilizers or the like are arranged. The spear 2 will be further described in Fig. 2 and the nozzle 8 as well as the operation of the same vi! be described as further refined.3.

On each guide rail 15, two rollers, a front roll 10 and a back roll 11, are arranged between the outer pipe 15 "and the inner pipe 15 ', which orient towards the pentagonal profile 20 and to the ground roll 24. The rollers 10, 11 are connected 15 is loaded with a wire 9 and to the neighboring rollers 10, 11 on the opposite guide rail 15 by the wire 9 being passed from the rear roller 11 to the neighboring roller 11. At this wire 9 the sliding mechanism is provided so that one carriage 16 and / or upper plate 16 ', and associated earth spears 2, on one guide rail 15 abut the front transverse side 19, the carriage 16 and / or the upper plate 16' on the opposite guide rail 15 abut the rear Thus, as the front carriage 16 and / or upper plate 16 'slides back, the rear carriage 16 and / or upper plate 16' of the opposite guide screen 15 will slide forward due to the wire 9.

25 For checking where the earth spears 2 are in motion along the frame 4 and to each other, and when the earth spears 2 are to be sent into the ground and supplied with sand, fertilizers or other, eight sensors, two first sensors 7 are arranged on the transport unit 1 ' , two second sensors 7 ", two third sensors 7" "and two fourth sensors 7" ".

The first sensors 7 'are located individually on each earth spear 2 orienting to the inner tube 15' on the guide rail 15 and transmit the earth spears 2 into the ground by compressed air. Further description of the first sensors 7 'and their function will be further described with the description of the fourth sensors 7 "and in FIG. 2.

5 The second sensors 7 "are positioned opposite each other and on each of the longitudinal sides 18 of the frame facing the front of the transport unit, and record when each sled 16 with associated spear 2 has reached the position where the spear 2 is to send sand, fertilizers or other into the ground. Similarly, the third sensors 7 '", which are positioned opposite each other and likewise on each of the longitudinal sides 10 on the earth. The recordings are provided when the carriages 16 touch / hit the respective sensors 7 ”, Τ '.

15 In this embodiment, the second sensors 7 "respectively the third sensors T" are arranged on the upper side of the longitudinal sides 18 and orientate to the arms 12 and to the guide rails 15. However, second positioning is also possible, but it is essential that the distance between the front transverse side 19 and the second sensor 7 "are identical on each longitudinal side 18 and that the distance between the second sensor 7" 20 and the third sensor 7 '"is also identical on each longitudinal side 18 so that the shift between working ground skewers 2 provides a smooth and continuous addition of sand. , nutrients or the like in the given soil area.

By a simultaneous parallel displacement of, for example, the third sensors 7 '", in the longitudinal direction of the frame 4, the impact frequency of the ground skewers 2 can be adjusted. That is, when the third sensors 7 '"are adjusted to the second sensors 7", a higher stroke frequency is obtained and the third sensors 7 "" are adjusted closer to the rear transverse side 19, the stroke frequency is correspondingly less. The impact rate affects the amount of sand, nutrients or other matter to be applied to the soil. The higher the stroke-30 frequency the more sand, fertilizers or other material is added to the soil and vice versa.

How the application of sand, fertilizers or other things is described in FIG. 2 12 DK 174359 B1 and 3.

The spring sensors 7 "", one on each carriage 16 and facing the ground roller 24, in combination with a cam 38 located on the inside of each longitudinal side 18, will also be directed towards the ground roller 24, recording which ground spike 2 is in the neu tral position assumes the maximum backward position.

The first sensor 7 'located on the ground spike 2 correspondingly assumes the maximum forward position vi! actuating and transmitting the ground spear 2 into the ground and providing a blast of the ground 2 lower end of the ground spear.

The sensors described above comprising first sensors 7 ', second sensors 7 ", third sensors 7"' and fourth sensors 7 "" are referred to as control means 7.

15

In addition to the aforementioned sensors 7 ', 7', 7 '', two facing sensors 37 are placed on the pulling device 21. These sensors 37 ensure that the ground spears 2 always operate linearly with respect to the direction of travel. If the pulling device 21 swings out of the line course, the ground skewers 2 will be pulled into the neutral position, that is, both ground skewers 2 are free of the ground and one ground skewer 2 assumes a maximum forward position and the other ground skewer 2 corresponding to a maximum rearward position. For example, when transported from the garage to the work site, compressed air is pumped into the cylinders 14 by the arm 12, so that the transport unit 1 raises to the transport position, whereby the ground skewers 2 and the ground roller 24 are free of the driving surface. In the working position, the earth spears 2 are pulled into the neutral position so that one of the ground sensors 7 "" touches / strikes of cam 38. The air is shut off from the cylinders 14 and the transport unit 1 lowers on the ground roller 24, which is adjusted so that the slides 15 The adjustment is established by moving the legs 25 holding the roller 26 vertically downward and thus adjustable so that the two feed rails 15 can assume a horizontal position regardless of the vehicle used.

in the transport unit 1 described above, a transport unit 1 is based on two guide rails 15, each guide rail 15 comprising a single ground spear 2 and the transport unit 1 comprising eight sensors for controlling where the ground spears 2 are located. their movement along the frame 4, and to each other, as well as when the earth spikes 2 are to be sent into the ground and applied to sand, fertilizers or other. Conveniently, the transport unit 1 may comprise several earth spears 2 and it can be sharpened to comprise a single ground spike 10 2, where the number of sensors is correspondingly maximized or minimized, but where each earth spear 2 regardless of the number of the transport unit 1 comprises at least four sensors. Thus, it is essential for the invention that the ground spear (s) 2 can make a horizontal movement with respect to the frame 4 during the propulsion of the frame so that no stops must be made along the way.

15

Fig. 2 shows a single ground spike 2 to that of Figs. 1, comprising a substantially cylindrical rod 28 comprising an upper end 2 'and a tapered lower end 2' relative to the upper end 2 '. The grounding spear 2 is suspended in the upper plate 16 'on one of the two guide rails and can be adjusted via an intermediate tube 29 to assume different vertical positions depending on how deep the grounding spout 2 is desired to be injected into the ground.

At the tapered lower end 2 "are arranged four to six holes 3 or more, the holes 3 being evenly placed around the end 2". The taper of the lower end 2 ”25 can be provided in several ways, for example, cone shaped, pyramid shaped or other. It is most convenient, however, that the height of the taper is only a small part in relation to the total height of the ground spike, since the spear 2 is hereby easier to inject into the ground and partly strong enough to withstand any stones without cracking or otherwise be damaged.

30 14 DK 174359 B1 On the upper end 2 'is arranged a first sensor 7' in the form of a contact comprising a substantially horizontal rod 30 with a vertical contact tip 30 'relative to the rod 30. The first sensor 7 'is positioned to orient towards the inner tube of the guide rail.

In the immediate extension of the upper end 2 'and substantially axis parallel to the ground spike 2 is mounted a pressure means 6 comprising a compressed air cylinder. When the sledge 16 of the ground spider touches / strikes the second sensor 7 ”, located on the longitudinal side 18 of the frame, the air pressure cylinder 6 is activated, whereby the ground spear 2 vi! send 10 sand, fertilizers or other soil. Similarly, when the spear 2 is in a position where the carriage 16 touches / strikes the third sensor 7 ", the ground spike 2 is pulled up again by the compressed air as well. At the end of the stroke, the first sensor 7 'is activated on the second ground spike 2, which thus sends the ground spike 2 into the ground.

15

As shown in FIG. 1, on top plate 16 'is further positioned on nozzle 8 (see also Fig. 3). From this nozzle 8, sand, fertilizers or a combination thereof are fed to the upper end 2 ', from which it is directed down to the holes 3 on the lower end 2' '. Thus, during the injection of the spear into the soil, 20 sand and / or fertilizers will be applied simultaneously in the cracks of the ruptured soil.

It should be noted that during the treatment of the soil, the transport unit 1 moves in a continuous forward motion.

Figure 3 is a sectional view of the device shown in 1 and FIG. 2, for dispensing sand, fertilizers or the like, comprising a cylindrical container at the lower end thereof, oriented towards the upper plate 16 '(see Fig. 1), two bores, an air inlet 31 and an outlet 32 for air, are located; sand and / or fertilizers to the upper end of the earth spear.

A chamber 33 for the supply of sand and / or fertilizers is arranged between the air inlet 31 and the outlet 32, and by extension thereof. The supply of sand and / or fertilizers is provided by a hose (not shown) which connects to a channel 34 which runs from the upper wall 33 'of the chamber and terminates at the upper end of the nozzle 8. From here the sand and / or the fertilizer for the chamber 33. In the boundary junction between the channel 34 and the chamber 33 is a valve 35 and in the boundary junction between the chamber 33 and the outlet 32 a membrane 36 comprising a hole 36 'is arranged.

Thus, when sand and / or fertilizers are to be filled, this is done via duct 34, and the valve 35 will assume a position (indicated by a) whereby the chamber 33 is "filled". When applying sand and / or fertilizers to the soil, compressed air is supplied from the ground air piston cylinder 6 to the air inlet 31 and due to the air expansion, valve 35 will close (indicated by b), thereby pressing the sand and / or fertilizer 15 through the hole 36 'of the diaphragm, further through the outlet 32. From the outlet 32, the sand and / or fertilizer is fed to the soil spear.

20 25 30

Claims (8)

16 DK 174359 B1 A soil decompression transport unit (1) comprising a ground spike (2), said ground spike (2) comprising an upper end (2 ') and a tapered lower end (2) relative to the upper 5 end (2'). "), Which ground spike (2) is injected into the ground area by compressed air to provide a blast of the ground located at the lower end (2") of the ground spike, which transport unit (1) further comprises a frame (4), which frame (4) comprises a shear means (5) and a pressure means (6), on which shear means (5) or at least one ground spear (2), or which shear means (5) or pressure means (6), respectively, provide a horizontal and vertical, respectively. displacement of the earth spears (2) relative to the frame (4), characterized in that a soil substance is applied to the upper end (2 ') and that the tapered lower end (2 ") facing the soil area is arranged holes (3), from which formed holes (3), and the bursting of the soil. 15, the compressor (6) comprises a compressed air cylinder known for each spear (2) and the displacement means (5) comprises at least one of the frame (4) and in relation to the direction of travel of the transport unit, parallel guide rail (15), said guide rail (15) is provided with a plate (16 ') on which the ground spike (2) is placed and between which guide rail (15) is arranged rollers (10, 11) connected to each other by a wire (9) and that the control means (7) comprise at least four sensors, two sensors, a first sensor (7 ') and a third sensor (7' ") for the release of compressed air, a second sensor (7") for the supply of the soil and a fourth sensor (7 ") ") For recording the maximum forward and backward position of the ground spear (s) (2), respectively. 25 Transport unit (1) according to claim 1, characterized in that the horizontal or vertical displacement of a ground spear (2) is actuated by control means (7) and by the application of more than one ground spear (2), the activation of the horizontal and vertical displacement of one ground spear (2) is provided by the position of another ground spear (2). 17 DK 174359 B1 Transport unit (1) according to claim 1 or 2, characterized in that the soil comprises sand and / or fertilizers, which material is supplied to a nozzle (8) located in connection with the upper end (2 ') of the spear, which nozzle (8) comprises a valve (35), which valve (35) is actuated by the pressure means (6). 5 Transport unit (1) according to any one of the preceding claims, characterized in that a rotating wheel (13) and a cylinder (14) are arranged on two opposite sides of the frame (4), relative to the frame (4). cylinder (14) provides a vertical displacement of the frame (4) relative to the wheels (13). 10 A method of controlling a ground spear (2) on conveying unit (1) for decompression of land, said ground spear (2) comprising an upper end (2 ') and a, relative to the upper end (2'), tapered lower end (2 "), which earth spike (2) is injected into the soil area by compressed air to provide a burst of the ground located at the lower end (2") of the ground spikes, characterized in that at the upper end (2 ') a soil substance is applied to the spear (2) and holes (3) in the tapered lower (2 ") facing the soil area under which blasting sand is possibly supplied in combination with fertilizers or the like from the applied holes (3) and the transport unit (1) comprises at least one parallel guide rail (15) relative to the direction of travel of the transport unit (15) on which / which guide rail / guide rails (15) at least one ground spike (2) is placed and attached to a compressed air cylinder (6), which guide rail / guide rails (15), respectively, which compressed air cylinders (5) during the forward movement of the transport unit provide a vertical, respectively horizontal, displacement of the earth spout (s) (2) relative to the frame of the transport unit (4) and alternately relative to each other. offset and alternate offset are activated by the position / positions of the earthing / grounders, which / which position / positions are recorded by sensors (7), and which alternating offsets of each earthing (2) can be further divided into two categories, start and process. 30 Process according to claim 5, characterized in that the starting process is carried out by: 18 DK 174359 B1, compressed air is pumped into cylinders (14) at the wheels of the transport unit (13), the transport unit (1) is transported to the work site, after which the air is withdrawn from the cylinders (14), the displacement means (6) is set to the starting position / neutral position by means of of a wire (9) arranged on the guide rails (15) such that one ground spear (2) in relation to the other ground spear (2) assumes a forward and displaced position. 10 Process according to claims 6-7, characterized in that the process process comprising at least two earth spears (2) is carried out by sending one earth spear (2) into the ground by compressed air from the applied pneumatic cylinder (6) of the ground spike and is maintained when the fourth sensor (7 "" on the second ground spike (2) touches / strikes a comb (38), the ground spike (2) sent into the ground is applied to sand and / or fertilizers when the second sensor (7 ") is touched / hit by the plate (16 '), the 20 earth spear (2) sent into the ground is removed from the ground by air pressure when the third sensor (7' ") is touched / hit by the plate (16 ') and when the fourth sensor (7" M) touches / frames the cam (38) assumes the second ground spike (2) a forward position and is sent into the ground, also at 25 air pressure, sequence repeated until the desired ground area is decompressed. Use of the transport unit (1) according to claims 1-5 and the method 30 according to claims 5-7, preferably for golf courses.