Lifting device for raising supply lines in a greenhouse

Abstract

Lifting device (5) for a greenhouse (1) for lifting at least one supply line (3), in particular a supply line section (42), wherein the lifting device (5) has a support element (6) on which at least - an electrical energy storage device (7) is arranged, - a spindle gear unit electrically connected to the electrical energy storage device (7) is arranged, - a traction device is arranged which comprises at least one deflection element (11) and at least one traction element (12), wherein the traction device is connected to the spindle gear unit by frictional and / or positive locking, wherein the pulling element (12) is connected to a connecting element (13) designed for lifting the supply line (3), in particular the supply line section (42), characterized by the fact that at least one, preferably four, roller elements (40) are arranged on the support element (6), which is designed to rest on the supply line (3), in particular on a supply line section (42), wherein the support element (6) is provided with at least one guide element (43), wherein the support element (6) and / or the guide element (43) is designed for the arrangement of the roller element (40).

Description

[0001] The invention relates to a lifting device for a greenhouse for raising supply lines according to the preamble of patent claim 1.

[0002] Greenhouses for plants and / or crops, in which vegetables, for example, are grown, are known from the state of the art. Within the greenhouses, metal supply lines are provided, in particular meter-long, rail-like heating pipes, which are intended to heat the greenhouse. Several times a year, these heating pipes must be lifted to remove dirt, such as leaves and branches, that has accumulated beneath the heating pipes. Likewise, if plastic sheets are used, which are also located beneath the heating pipes, these must be removed and replaced to clean the soil area below. Until now, the heating pipes, which weigh several kilograms, have been lifted section by section by a team of three to five workers.The repeated and repetitive lifting of the heating pipes leads to health problems for the workers, particularly back problems. In addition, the cleaning of the greenhouse, which requires three to five workers, leads to increased labor costs and, as a result, increased cleaning costs for the greenhouse.

[0003] Therefore, the object of the invention is to provide a lifting device that is easy and comfortable for a worker to operate, which reduces the cleaning costs for the greenhouse.

[0004] The object is achieved by patent claim 1, in particular by the characterizing part of patent claim 1. In the present invention, the hydraulic unit can be replaced by a spindle gear unit.

[0005] A lifting device for a greenhouse is provided for raising at least one supply line, in particular a supply line section, wherein the lifting device has a support element on which at least one electrical energy storage device is arranged. The supply lines can comprise one or more supply line sections that can be lifted by the lifting device. Furthermore, at least one hydraulic unit electrically connected to the electrical energy storage device is arranged on the support element, which hydraulic unit comprises at least one hydraulic pump, a hydraulic cylinder and a piston, in particular a piston rod, provided in the hydraulic cylinder. Furthermore, at least one traction device is arranged on the support element, which comprises at least one deflection element and at least one traction element.The traction device is connected to the hydraulic unit in a force-locking and / or form-locking manner, wherein the traction element is connected to a connecting element designed to lift the supply line, in particular the supply line section.

[0006] According to a preferred embodiment of the lifting device, it can be provided that the preferably manually operated lifting device is designed as a greenhouse supply line lifting device. The greenhouse supply line lifting device can be designed exclusively for use in a greenhouse in which plants and / or growths are cultivated. The preferably manually operated lifting device can be designed as a greenhouse supply line lifting device, which is preferably designed exclusively or substantially for use in a greenhouse in which plants and / or growths and / or other natural products are cultivated. The plants can be, for example, vegetable plants, flowers or fruit plants. The plants and / or growths can be arranged within the greenhouse in rows and mirror-symmetrically to one another in aisles with respect to a longitudinal axis of the greenhouse.

[0007] The greenhouse can be equipped with supply lines, designed, for example, as heating pipes, which are arranged at least partially within the greenhouse, preferably in a rail-like manner on foil. The supply lines can preferably be arranged in pairs along the aisles and can extend several hundred meters to kilometers along these aisles, where, for example, the plants and / or growths are planted. The length of a single supply line is preferably 80m to 120m. However, supply lines can also have a total length of up to 25km or more, for example. Furthermore, these supply lines are composed of one or more strands, wherein each strand can have a length of 100m to 200m.The weight at the point of the supply line to be lifted, especially at the supply line section, can be 80kg to 100kg, which could only be lifted by several people (three to five people).

[0008] Furthermore, the supply lines can be arranged on support bases designed as clamp supports, so that they are arranged at a distance from a ground surface of the greenhouse, for example at a distance of 10 cm to 20 cm from the ground surface. These clamp supports can have a semicircular recess designed to positively and / or non-positively accommodate the supply lines. A surface of the semicircular recess of the clamp support is complementary to the geometric surface of the supply line. When the supply lines, in particular the supply line section, are lifted, these can remain on the supply lines or, alternatively, remain on the ground surface, in which case they must then be subsequently collected, for example to replace the film, which can be arranged underneath the supply lines.

[0009] In principle, the supply lines can be designed for heating and / or irrigating the plants and / or vegetation. For this purpose, a fluid, particularly water, is pumped into the supply line, which preferably has a temperature of 20 degrees Celsius to 100 degrees Celsius for heating purposes.

[0010] The support element can be designed as a chassis and is preferably made of metal, in particular iron. The support element can have a lattice structure for reasons of stability. The support element preferably has a steel tube construction which has a crane-like structure. Furthermore, the support element can be designed for the arrangement of one or more plates, in particular a wooden plate. The plates can serve for the arrangement of technical components, such as an actuating device, parts of the hydraulic unit, the electrical energy storage device, but also as a storage area for tools which may be required when cleaning the greenhouse. Furthermore, it can be provided that the lifting device, in particular the support element, is provided with preferably one or two handles which can be used to control the lifting device.

[0011] The electrical energy storage device can be designed as a battery, for example. It is advantageous if the battery can be charged, thus avoiding the need for frequent battery changes. Preferably, two batteries are provided for the lifting device, which are arranged, for example, in the rear area of ​​the lifting device and also serve as a counterweight to the raised supply line, in particular the supply line section. The electrical energy storage device serves to operate the hydraulic unit. It is also conceivable for the lifting device to be provided with an electric motor drive, which can be powered by the electrical energy storage device. With the help of the electric motor drive, the lifting device could be moved automatically. This would require an operating lever and a control element to accelerate or decelerate the lifting device.

[0012] The hydraulic unit may comprise a compressor, in particular a hydraulic compressor, the hydraulic pump, the hydraulic cylinder, and the piston, in particular the piston rod guided in the hydraulic cylinder, as well as fluid lines. Furthermore, the hydraulic unit may comprise control and / or regulating valves, in particular solenoid valves for controlling the flow of the fluid, as well as bolts.

[0013] The hydraulic cylinder preferably has a cylindrical structure. Oil, for example, can be used as the hydraulic fluid. The pressure acting on the piston, in particular the piston rod, can be varied by a throttle valve associated with the hydraulic unit. Using the hydraulic unit allows for a reliable, safe, fast, and time-saving lifting of the supply lines, in particular supply line sections. Furthermore, the lifting device can comprise an electrical control unit, in particular an electrical circuit, preferably for controlling the hydraulic unit.

[0014] The traction device can be designed, for example, as a cable pulley, chain pulley, pulley block, or the like. The deflection elements of the traction device are preferably designed as cable pulleys or chain pulleys. Depending on the design of the lifting device, one or more deflection elements can be used. Furthermore, the traction device comprises a traction element, which can be designed, for example, as a cable, in particular a steel cable, or a chain.

[0015] The connecting element can, for example, be designed as a hook that is connected to the tension element by means of a positive and / or non-positive connection. The connecting element can be latched, glued, inserted, or knotted to the tension element. Theoretically, multiple connecting elements can also be arranged on the tension element.

[0016] The lifting device according to the invention now offers the advantage that, at best, only a single person is required to lift the supply lines, especially sections of the supply line. Using the lifting device, the supply line can be raised quickly and successively from point to point. The supply line can take on the shape of a Gaussian bell curve along the raised section. Advantageously, the use of fewer personnel makes cleaning the greenhouse more economical and, at the same time, more comfortable for the cleaning staff, because heavy physical labor can be avoided thanks to the use of the lifting device. This permanently ensures the health of the cleaning staff.Furthermore, cleaning of the greenhouse can also be done more quickly because the hydraulic unit in particular ensures that the supply lines can be lifted quickly and safely.

[0017] According to a preferred embodiment of the lifting device, the connecting element can be provided with at least one first contact section, which is at least partially complementary to a geometric shape of an outer surface of the supply line, which is in particular round-shaped. This measure ensures that the supply lines are stably and securely mounted in the connecting element during lifting and / or lowering. Slipping of the supply line, in particular of the supply line section, in the connecting element can thus be essentially eliminated.

[0018] The cleaning costs for the greenhouse can be further reduced if the connecting element is designed as a hook, which comprises the first contact section and preferably a second contact section arranged mirror-symmetrically to the first contact section with respect to a longitudinal axis L of the connecting element. If a second contact section is provided, two mutually parallel supply lines, in particular supply line sections, can be raised and / or lowered simultaneously in one go. This accelerates cleaning of the greenhouse. It is also conceivable for the hook to have several, in particular more than two, contact sections.

[0019] Furthermore, the hook can also be designed as a double hook. For this purpose, the first contact section and preferably the second contact section can be at least partially U-shaped and provided for the temporary and preferably selective reception of a tubular, in particular round-shaped, supply line. With the aid of the preferably two contact sections, two supply lines, in particular supply line sections, running parallel and spaced apart from one another can thus be raised or lowered simultaneously in order to remove the films and / or contaminants beneath the supply lines, in particular supply line sections.

[0020] According to a further preferred embodiment of the lifting device, at least one first support element and preferably a second support element can be arranged on the carrier element. Each support element can preferably be connected to the carrier element via at least one support spring element. The support element can serve to stably mount the lifting device when the supply line is lifted by means of the connecting element. The support element is transferred from its original position, in which the support spring element is in its relaxed state, into an operating position in which the support spring element is in its tensioned or compressed state. The at least one support element can advantageously prevent the lifting device from tipping sideways or forwards or tipping over.The support spring element advantageously ensures that after the connecting element is released from the supply line, the support element automatically returns from the operating position to its original position. The support element can be designed as a plate, for example. It is also conceivable for the support element to be cuboid-shaped or spherical. The support element is preferably made of metal. The support spring elements can be designed to be robust enough to bear the weight of the lifting device and to be compressed when the supply line is lifted, when the additional weight of the supply line acts on the lifting device.

[0021] According to a further preferred embodiment of the lifting device, at least three wheels, preferably four wheels, particularly preferably six wheels, are arranged on the support element, wherein all wheels and support elements can be in contact with a floor surface of the greenhouse when the supply lines are lifted by means of the connecting element. With the aid of the wheels, the lifting device can be moved easily, quickly, and safely along the supply lines. Furthermore, the wheels can each also serve as a support element. Furthermore, it is conceivable for the wheels to be provided with a locking device so that the lifting device remains in a stationary state when the supply line is lifted.If the lifting device is arranged on the supply lines, the wheels can be arranged at a distance from the ground surface during the lifting of the supply line, in particular the supply line section. Preferably, it can be provided that the distance between two wheels arranged on the support element, which are arranged mirror-symmetrically to one another in the direction of travel, is greater than the diameter, in particular the outer diameter of a supply line, preferably of two supply lines arranged next to one another. Depending on the arrangement of the supply lines in the greenhouse, the lifting device can thus be moved next to the supply line, or the lifting device can be moved above the supply line, or the lifting device can be moved on the supply lines. These measures make it possible to increase the flexibility of the lifting device. The wheels can also be designed as rollers.

[0022] According to a further preferred embodiment of the lifting device, the hydraulic cylinder can be connected to the support element by at least one support connecting element, preferably by four support connecting elements. The support connecting elements ensure stable and secure mounting of the hydraulic cylinder. The support connecting elements can be attached separately to the support element or formed integrally with the support element.

[0023] Furthermore, it can be provided that one end of the tension element is arranged on the support element or the hydraulic cylinder, preferably fastened in a force-fitting and / or form-fitting manner.

[0024] According to a further preferred embodiment of the lifting device, it can be provided that the piston is connected to the traction device, in particular to at least one deflection element. Due to this simple and cost-effective design of the lifting device, the traction element, in particular a rope designed as a traction element, can be moved with the aid of the hydraulic unit, in particular with the aid of the piston, which is connected to the connecting element, which is preferably designed as a double hook. The hydraulic unit has the advantage that heavy loads can be lifted in just a few seconds using the lifting device. It would also be conceivable for the traction device, in particular the connecting element, to be additionally connected to an electric drive in order to be able to move the connecting element more slowly for better adjustment to the supply line.

[0025] According to a further preferred embodiment of the lifting device, it can be provided that, during the lifting of a supply line section, the lifting device is arranged on a supply line section adjacent to the supply line section to be lifted. This measure can ensure quick and comfortable lifting by the user.

[0026] According to a further preferred embodiment of the lifting device, it can be provided that at least one, preferably four rolling elements are arranged on the support element, which is designed to rest on the supply line, in particular on a supply line section. The rolling elements can preferably be made of nylon. The rolling elements can ensure that the lifting device can be moved or displaced easily and safely on the supply lines, in particular on the respective supply line sections, via at least one, preferably four actuating handles arranged on the support element. It is advisable to arrange two rolling elements designed as rollers on each side of the support element, on the left and right. These rollers can, for example, have the shape of a cylinder.

[0027] According to a further preferred embodiment of the lifting device, the support element can be provided with at least one guide element, wherein the support element and / or the guide element is designed to accommodate the rolling element. Thus, the guide element and / or support element can serve, on the one hand, to support the at least one wheel, and, on the other hand, it ensures stable guidance of the lifting device on the supply line, thus preventing the user from accidentally tipping or tipping the lifting device off the supply lines.

[0028] According to a further preferred embodiment of the lifting device, it can be provided that at least two wheels, preferably four wheels, are arranged on the support element, wherein the wheels are arranged at a distance from a ground surface when lifting the supply line, in particular a supply line section. When using preferably four rolling elements, the friction generated between the rolling elements and the supply lines during movement of the lifting device on the respective supply line sections is reduced, in particular when the wheels are spaced from the ground surface during movement of the lifting device. If, for example, the lifting device is not arranged on the supply lines, the wheels serve for simple and comfortable movement of the lifting device on the ground surface.Furthermore, two central wheels can be arranged on the support element of the lifting device, which serve for a stable movement of the lifting device on the ground surface, in particular on a roadway section.

[0029] The wheels can be designed as front wheels and / or rear wheels of the lifting device. In particular, the wheels can be designed as swivel wheels which are arranged so as to be rotatable and / or pivotable by 360 degrees about their own axis. The wheels, in particular the rear wheels and the front wheels of the lifting device, can be arranged in particular at a distance of at least 2 cm to 8 cm from the ground surface, in particular a surface of the roadway section. The rolling elements of the lifting device can be arranged in particular at a distance of at least 15 cm to 25 cm from the ground surface, in particular the surface of the roadway section. The center wheels can then be arranged on the surface of the ground surface, in particular of the roadway section.Consequently, with an even weight distribution, the lifting device can be designed as a rocker, allowing it to be easily pivoted or rotated around its own axis on the roadway section. This allows a user to easily and conveniently move the lifting device from the ground surface, in particular the roadway section, to the supply line, allowing the rolling elements to come into contact with the corresponding supply lines. At the same time, the wheels, in particular the front wheels, the rear wheels, and the center wheels, are preferably arranged at a distance from the ground surface.

[0030] The construction of the lifting device can be made very stable if the support element has a front section that is essentially V-shaped or U-shaped, wherein a first leg and a second leg of the V-shaped or U-shaped front section are connected to one another by a base. This construction extends the service life of the lifting device, particularly in the case of very heavy supply lines. Due to the V-shaped structure of the support element, the lifting device can be moved very close to the supply line. The lifting device, in particular one leg of the V-shaped structure of the front section, should be arranged essentially parallel to at least one supply line.This measure makes it possible to keep the distance between the lifting device and the supply line as small as possible in order to connect the connecting element to the supply line comfortably, easily and safely.

[0031] According to a preferred embodiment of the lifting device, the support element can have a connecting section, which preferably connects the first leg and the second leg, wherein a pivotable or rotatable first mast is arranged on the connecting section, which is at least partially provided for the arrangement of the traction device, in particular the deflection element. The first mast can be connected via a connecting section to the at least one support element, which moves in the same direction when the first mast is rotated or pivoted. The traction device, which preferably has a crane-like structure, can comprise this mast. The connecting section should be formed from a stable cuboid-shaped web in order to provide sufficient surface area for the arrangement of the mast.Furthermore, the connecting section should be made of a metal, such as iron, and have a minimum thickness of 0.5 cm to 2.5 cm. The connecting section can be part of the support element. The connecting section can also be subsequently connected to the support element, for example, by means of a screw connection or welded joint. It should be ensured that the connecting section remains immobile relative to other sections of the support element when the supply line, in particular the supply line section, is lifted by the lifting device.

[0032] The design of the lifting device can be further simplified if the first mast has a first mast section and a second mast section, wherein the first mast section and the second mast section are arranged at a substantially right angle to one another. This arrangement allows the mast to be designed in the shape of a gallows. This increases the reach of the connecting element and ensures that the connecting element can be placed over the supply lines in simple and less time-consuming steps. This makes positioning the connecting element on the supply line considerably easier for the worker, particularly if the mast is pivotable or movable, preferably able to rotate about its own longitudinal axis.

[0033] In order to be able to ensure the movement of the connecting element, in particular of the pulling element, at any time, it can be provided that a second mast designed as a guide element is arranged on the first mast, in particular on the first and / or second mast section of the first mast, at a distance from the first mast, which second mast is also provided for arranging the pulling force device, in particular the deflection element, and is designed for arranging and guiding the piston.

[0034] This advantageous measure makes it possible to keep the installation space for the individual components of the lifting device as small as possible. The result is a compact lifting device that can be operated easily and safely by a single worker.

[0035] The construction of the lifting device can be made very compact and cost-effective if the support element in the front section comprises a bearing element for mounting a wheel, in particular a front wheel of the lifting device. In this way, the installation space of the lifting device between the legs of the V-shaped or U-shaped front section can advantageously be used to arrange the front wheel there. This also advantageously prevents the legs of the V-shaped or U-shaped front section from touching the supply line first when the lifting device strikes a supply line and thus the front wheel, in particular a tire of the front wheel, remains unaffected. This can further increase the service life of the lifting device, in particular the front wheel.The V-shaped front section can be extended if it is provided with at least one damping element, which is made of an elastic material, preferably rubber, for example. When the supply line is lifted by the lifting device, high forces act on the support element. It is therefore preferably provided that the bearing element is connected to the front section, in particular to the first leg via a first support element, and to the second leg via a second support element and preferably to the base of the front section via a third support element, and is connected to the first mast, in particular to the first mast section and / or second mast section, via a fourth support element. This measure advantageously ensures that the front wheel remains undamaged when the supply line, in particular the supply line section, is lifted.This measure also ensures that the service life of the front wheel is extended. The front wheel preferably has a smaller diameter than the rear wheels. In order to support the wheel, in particular the front wheel, safely and easily, it can be provided that a wheel suspension is provided for the wheel, in particular for the front wheel, wherein a spring element is arranged in the bearing element and is connected to the wheel suspension and / or the front wheel, wherein a relative movement is provided between the bearing element and the front wheel and / or the wheel suspension when the supply line is lifted. In the unloaded state of the lifting device, when the connecting element is not yet in the process of lifting the supply lines, the spring element can be in a relaxed state.When the supply line is lifted by the lifting device, the support element can lower toward the ground surface of the greenhouse, compressing the spring element. When the gravity forces acting on the connecting element are no longer acting, the spring element can be returned to its original, relaxed state, and the support element can move back to its original position.

[0036] In addition, the lifting device according to the invention offers the advantage that, thanks to the pivotable first mast, the adjacent supply lines, which can be arranged to the left and / or right of the supply lines on which the lifting device is currently located, can also be lifted by the lifting device. Furthermore, the first mast and the support element connected thereto should preferably be arranged parallel to the supply line on which the lifting device is currently located during the movement of the lifting device. To advantageously ensure this, the first mast and the connecting section connected thereto can be pivoted or rotated in this direction, so that the first mast and the connecting section are aligned in the direction of travel of the lifting device.Once the point at which the adjacent supply line is to be lifted is reached—approximately every 8 to 15 meters, preferably 10 meters—the first mast can be automatically or manually rotated or pivoted toward the adjacent supply line. The support element can pivot along with the line because it can be connected to the first mast via the connecting section. The support element can rest on the floor surface of the greenhouse, providing advantageous support for the lifting device and protecting it from tipping or tipping over.

[0037] The hydraulic unit, in particular the hydraulic cylinder, could alternatively be replaced by a pneumatic cylinder unit, in particular by a pneumatic cylinder. It is also conceivable for the hydraulic unit to be replaced by a spindle gear unit. The spindle gear unit can comprise at least one spindle unit, a thread, and a follower. The follower can move relatively along the longitudinal axis of the spindle gear unit or the spindle unit, in particular during rotation of the spindle unit. In this case, the piston, in particular the piston rod, can be set in translational motion.

[0038] The invention and the technical environment are explained in more detail below with reference to the figures. It should be noted that the figures show particularly preferred embodiments of the invention, but the invention is not limited thereto. In the present invention, the hydraulic unit can be replaced by a spindle gear unit.

[0039] The figures show: Fig. 1 a greenhouse with plants and supply lines, Fig. 2 the greenhouse without plants with supply lines and a lifting device according to a first embodiment, Fig. 3a the lifting device according to the invention according to the first embodiment in a side view, Fig. 3b the lifting device according to the invention according to the first embodiment in a front view, Fig. 3c the lifting device according to the invention according to the first embodiment in a rear view, Fig. 3d the lifting device according to the invention according to the first embodiment in a plan view, Fig. 4a a lifting device according to the invention according to a second embodiment in a perspective view, Fig. 4b the lifting device according to the invention according to the second embodiment in a further modified and more detailed perspective view, Fig. 5a a lifting device according to the invention according to a third embodiment in a side view, Fig. 5b a section of the lifting device according to the invention according to the third embodiment in a side view, and Fig. 6 another greenhouse without plants with supply lines and a simplified lifting device according to the third embodiment.

[0040] In the Fig. 1 and in the Fig. 2 shows a greenhouse 1 for arranging crops and / or plants 2, such as vegetables. Supply lines 3 are arranged in the greenhouse 1, preferably in a rail-like manner and spaced apart from one another, on support bases 4. These supply lines are designed, for example, as heating pipes or water pipes and serve to heat or irrigate the plants 2. A film (not shown in detail) may be located beneath the supply lines 3 and, if applicable, the support bases 4, on which plant residues may be arranged, which must be removed. Furthermore, there is also a need to replace the film after a certain period of use. As shown in the Fig. As visualized in Figure 2, the supply lines 3 must be raised. For this purpose, a lifting device 5 is provided, which includes an electrical circuit for controlling the lifting device. The preferably manually operable and electro-hydraulic lifting device 5 can be designed as a greenhouse supply line lifting device, which is designed exclusively for use in the greenhouse 1 in which the plants and / or growths are cultivated. The lifting device 5 further includes an electrical circuit for controlling the lifting device.

[0041] In the Fig. 3a to 3d schematically show a lifting device 5 according to a first embodiment. The lifting device 5 has a support element 6, on which two electrical energy storage devices 7, preferably designed as batteries, are arranged. The electrical energy storage devices 7 are electrically connected to a hydraulic unit arranged on the support element 6, which comprises a hydraulic pump 8, a hydraulic cylinder 9, and a piston 10 provided in the hydraulic cylinder 9. The hydraulic unit can also comprise a compressor, in particular a hydraulic compressor. Furthermore, a traction device designed as a cable pull or alternatively as a chain pull or pulley block is arranged at least partially on the support element 6. This traction device preferably comprises deflection elements 11 designed as cable pulleys or chain pulleys and at least one traction element 12 designed as a cable or alternatively as a chain.The traction device is connected to the hydraulic unit in a force-locking and / or form-locking manner. The piston 10 can be connected to the traction device, in particular to at least one deflection element 11. One end of the traction element 12 can be fastened to the support element 6 and / or to a plate 33, preferably made of wood, in particular plywood, which is connected to the support element 6.

[0042] The tension element 12 is connected to a connecting element 13 designed for lifting the supply lines 3, wherein the connecting element 13, which is preferably designed as a hook, in particular as a double hook, has a first contact section 14 and a second contact section 15, which are each designed at least partially complementary to a geometric shape of the outer surface of the supply line 3. The hook can be designed as a pipe hook. The hook, in particular a double hook, comprises the first contact section 14 and the second contact section 15, which is arranged mirror-symmetrically to the first contact section 14 with respect to a longitudinal axis L of the connecting element 13, as can be clearly seen in the Fig. 3a. Here, the first contact section 14 and the second contact section 15 are each at least partially U-shaped and are intended for the temporary and selective reception of a tubular, in particular round-shaped, supply line 3.

[0043] Furthermore, in the present embodiment of the lifting device 5, three wheels, in particular two rear wheels 16 and one front wheel 17, are arranged on the carrier element 6.

[0044] Furthermore, two handle elements 18 for guiding and controlling the lifting device 5 are arranged on the support element 6. Preferably, two support elements 19 are arranged on the support element 6, wherein each support element 19 is preferably connected to the support element 6 via at least one support spring element (not shown in detail). The support spring elements are designed to be robust enough to support the weight of the lifting device 5 and to be compressed when the supply line 3 is lifted, when the additional weight of the supply line 3 acts on the lifting device 5.

[0045] The support element 6 has a front section that is substantially V-shaped or alternatively U-shaped, wherein a first leg 20 and a second leg 21 of the V-shaped front section are connected to one another by a base 22. The support element 6 comprises, in the front section, a bearing element 23 for supporting the front wheel 17 of the lifting device 5. The bearing element 23 is connected to the front section, in particular via a first support element 24 to the first leg 20, and via a second support element 25 to the second leg 21, and via a third support element 26 to the base 22 of the front section.Furthermore, a wheel suspension 27 is provided for the front wheel 17, wherein a spring element (not shown in detail) is arranged in the bearing element 23 and is connected to the wheel suspension 27 and / or the front wheel 17. When the supply line 3 is lifted, a relative movement is provided between the bearing element 23 and the front wheel 17 and / or the wheel suspension 23. When the supply lines 3 are lifted by means of the connecting element 13, preferably all wheels 16, 17 and support elements 19 are in contact with a ground surface of the greenhouse 1. The spring element is located in a tube above the wheel suspension 27, in particular a front wheel suspension. Under load, the front wheel 17 sinks far enough that the respective support element 19 touches the ground and thus provides support.

[0046] The support element 6 has a connecting section 28, which preferably connects the first leg 20 and the second leg 21. Arranged on the connecting section 28 is, in particular, a pivotable or rotatable first mast 29, which can be provided at least partially for arranging the traction device, in particular the deflection elements 11. The first mast 29 has a first mast section 30 and a second mast section 31, wherein the first mast section 30 and the second mast section 31 are arranged at a substantially right angle to one another.On the first mast 29, in particular on the first mast section 30 and / or on the second mast section 31 of the first mast 29, a second mast 32 designed as a guide element is arranged at a distance from the first mast 29, which second mast 32 is also provided for arranging the traction device, in particular the deflection elements 11, and is designed for arranging and guiding the piston 10.

[0047] Furthermore, the bearing element 23 can preferably be connected to the first mast 29, in particular to the first mast section 30 and / or second mast section 31 via a fourth support element.

[0048] An operating device 34 for operating and controlling the lifting device 5, in particular for actuating the traction device, can be provided on the plate 33.

[0049] In the Fig. 4a schematically shows a lifting device 5 according to a second embodiment, which essentially has the same function as the lifting device 5 according to the first embodiment. A significant difference from the embodiment according to the Fig. 3a - 3d is that the lifting device comprises four wheels 35, which are arranged on a support element 6. The distance between two wheels 35 arranged on the support element 6, which are arranged mirror-symmetrically to one another with respect to a longitudinal axis L' provided in the direction of travel, is greater than the diameter, in particular the outer diameter of a supply line 3, preferably of two supply lines 3 arranged next to one another. Thus, the supply lines 3 can be located between two batteries arranged on the support element 6 and designed as electrical energy storage devices 7, when the lifting device 5 is moved along the supply lines 3.

[0050] In the Fig. 4b is a modified and more detailed variant of the lifting device 5 of the Fig. 4a shown.

[0051] The lifting device 5 has a support element 6, on which two electrical energy storage devices 7, preferably designed as batteries, are arranged. The electrical energy storage devices 7 are electrically connected to a hydraulic unit arranged on the support element 6, which comprises a hydraulic pump 8, a hydraulic cylinder 9, and a piston 10 provided in the hydraulic cylinder 9. The hydraulic pump 8 is connected to the hydraulic cylinder 9 via connecting lines (not shown in detail), which can be arranged, for example, in or on the support element 6.

[0052] The hydraulic cylinder 9 is connected to the support element 6 by four support connecting elements 45, wherein the support connecting elements 45 are preferably arranged on an upper, in particular uppermost, section of the lifting device 5. One end of the tension element 12 is preferably fastened to the support element 5 and / or to the hydraulic cylinder 9 in a force-fitting and / or form-fitting manner.

[0053] The hydraulic unit can also comprise a compressor, in particular a hydraulic compressor. Furthermore, a traction device designed as a cable pull or alternatively as a chain pull or pulley block is arranged at least partially on the support element 6, which traction device here preferably comprises deflection elements 11 designed as cable pulleys or chain pulleys and at least one traction element 12 designed as a cable or alternatively as a chain. The traction device is connected to the hydraulic unit in a force-locking and / or form-locking manner. The piston 10 can be connected to the traction device, in particular to at least one deflection element 11. One end of the traction element 12 can be force-lockingly fastened to the support element 6 and / or to a plate 33, preferably made of wood, in particular plywood, which is connected to the support element 6.

[0054] The pulling element 12 is connected to a connecting element 13 designed for lifting the supply lines 3. The connecting element 13, which is preferably designed as a hook, in particular as a double hook, has a first contact section 14 and a second contact section 15, which are each designed at least partially to complement a geometric shape of the outer surface of the supply line 3. The hook can be designed as a pipe hook. The hook, in particular a double hook, comprises the first contact section 14 and the second contact section 15, which is arranged mirror-symmetrically to the first contact section 14 with respect to a longitudinal axis L of the connecting element 13. Here, the first contact section 14 and the second contact section 15 are each designed at least partially U-shaped and are intended for the temporary and selective reception of a tubular, in particular round-shaped, supply line 3.

[0055] The lifting device 5 comprises four wheels 35 arranged on a support element 6. The distance between two wheels 35 arranged on the support element 6, which are arranged mirror-symmetrically to one another with respect to a longitudinal axis L' provided in the direction of travel, is greater than the diameter, in particular the outer diameter, of a supply line 3, preferably of two supply lines 3 arranged side by side. Thus, the supply lines 3 can be located between two batteries arranged on the support element 6 and designed as electrical energy storage devices 7 when the lifting device 5 is moved along the supply lines 3, in particular a supply line section.

[0056] Furthermore, four handle elements 18 for guiding and controlling the lifting device 5 are arranged on the support element 6.

[0057] An operating device (not shown in detail) for operating and controlling the lifting device 5, in particular for actuating the traction device, can be provided on the plate 33.

[0058] In the Fig. 5a and Fig. 5b schematically shows a lifting device 5 according to a third embodiment. The lifting device 5 has a support element 6, on which one or two electrical energy storage devices 7, in particular designed as batteries, are arranged. The electrical energy storage devices 7 are electrically connected to a hydraulic unit arranged on the support element 6, which comprises a hydraulic pump 8, a hydraulic cylinder 9, and a piston 10 provided in the hydraulic cylinder 9. The hydraulic unit can also comprise a compressor, in particular a hydraulic compressor. Furthermore, a traction device designed as a cable pull or alternatively as a chain pull or pulley block is arranged at least partially on the support element 6. This traction device preferably comprises deflection elements 11 designed as cable pulleys or chain pulleys and at least one traction element 12 designed as a cable or alternatively as a chain.The traction device is connected to the hydraulic unit in a force-locking and / or form-locking manner. The piston 10 can be connected to the traction device, in particular to at least one deflection element 11. One end of the traction element 12 can be fastened to the support element 6 and / or to a plate 33, preferably made of wood, in particular plywood, which is connected to the support element 6.

[0059] The pulling element 12 is connected to a connecting element 13 designed for lifting the supply lines 3. The connecting element 13, which is preferably designed as a hook, in particular as a double hook, has a first contact section 14 and a second contact section 15, which are each designed at least partially to complement a geometric shape of the outer surface of the supply line 3. The hook can be designed as a pipe hook. The hook, in particular a double hook, comprises the first contact section 14 and the second contact section 15, which is arranged mirror-symmetrically to the first contact section 14 with respect to a longitudinal axis L of the connecting element 13. Here, the first contact section 14 and the second contact section 15 are each designed at least partially U-shaped and are intended for the temporary and selective reception of a tubular, in particular round-shaped, supply line 3.

[0060] Furthermore, in the present embodiment of the lifting device 5, six wheels, in particular two rear wheels 16 and two front wheels 17 as well as two center wheels 39, are arranged on the support element 6, which serve for a stable movement of the lifting device 5 on the ground surface.

[0061] Furthermore, four roller elements 40, in particular made of nylon, are preferably arranged on the support element 6 and are designed to rest on the supply line 3, in particular on a supply line section 41. The supply line section 41 is an area on which the lifting device 5 is currently (temporarily) located. In addition to the supply line section 41 in the Fig. 5a, there is another supply line section 42 on the left side. The supply lines 3 located in this supply line section 42 can be lifted by means of the lifting device 5, in particular by the connecting element 13.

[0062] Preferably, four rolling elements 40, which may be cylindrical, are arranged on the support element 6. The rolling element 40, which is preferably designed as a cylindrical roller, serves to rest on the supply line 3, in particular on a supply line section 41. Furthermore, the support element 6 can be provided with at least one guide element 43, which is designed to arrange the respective rolling element 40. The guide elements 43 serve to ensure a safe and stable movement of the lifting device 5 on the supply lines 3. In the present embodiment according to the Fig. 5a, Fig. 5b, the lifting device 5 comprises four roller elements 40 and four guide elements 43, wherein each guide element 43 is assigned exactly one roller element 40.

[0063] As described above, the four wheels, in particular two front wheels 16 and two rear wheels 17, are mounted on the carrier element 6 in the side view according to the Fig. 5a, Fig. 5b, only one front wheel 16 and one rear wheel 17 are shown, wherein the four wheels 16, 17 are arranged at a distance from a ground surface, in particular of the greenhouse 1, when the supply line 3, in particular a supply line section 42, is lifted. When the supply line 3, in particular a supply line section 42, is lifted, the preferably two center wheels 39 are also arranged at a distance from a ground surface. The rear wheels 16, the front wheels 17, and the center wheels 39 can each be connected to one another by a common axle.

[0064] Furthermore, four handle elements 18 for guiding and controlling the lifting device 5 are arranged on the carrier element 6, wherein in the Fig. 5a, only two handle elements 18 are visualized. A support element 19 is preferably arranged on the carrier element 6, wherein the support element 19 can preferably be connected to the carrier element 6 via at least one support spring element (not shown in detail).

[0065] The support element 6 has a connecting section (not shown in detail) arranged on the plate 33, which is designed for the arrangement of a pivotable or rotatable first mast 29. The first mast 29 serves at least partially for the arrangement of the traction device, in particular the deflection elements 11. The first mast 29 has a first mast section 30 and a second mast section 31, wherein the first mast section 30 and the second mast section 31 are arranged at a substantially right angle to one another. On the first mast 29, in particular on the first mast section 30 and / or on the second mast section 31 of the first mast 29, a second mast 32 designed as a guide element is arranged at a distance from the first mast 29, which second mast 32 is also provided for the arrangement of the traction device, in particular the deflection elements 11, and can be provided for the arrangement and guidance of the piston 10.

[0066] Furthermore, the first mast 29 can be connected to a stepped mast section 44, at the end of which the support element 19 can be arranged. The support element 19 can be extended by means of a further hydraulic unit or the hydraulic unit when the traction device is actuated in order to provide even better support for the lifting device 5.

[0067] An operating device 34 for operating and controlling the lifting device 5, in particular for actuating the traction device, can be provided on the plate 33.

[0068] In the following, for the two previously described embodiments, the lifting of the supply line 3 with the lifting device 5 according to the Fig. 3a-3d or the Fig. 4a-4b described.

[0069] A user moves the lifting device 5 by means of the handle elements 18 towards the supply line 3. The user then actuates the operating device 34, which starts the hydraulic unit. The piston 10 is moved vertically downwards, so that the pulling device, in particular the pulling element 12 connected to the piston 10 preferably via the deflection element 11, is set in motion. The connecting element 13, which is connected to the pulling element 12, is moved in the direction of the supply line 3. It would also be conceivable for the pulling force device, in particular the connecting element 13, to be additionally and / or alternatively connected to an electric drive in order to be able to move the connecting element 13 towards the supply line 3 more slowly for better adjustment. The hydraulic device or, alternatively, the electric drive is stopped again by means of the operating device 34.

[0070] In a further step, the user connects the supply line 3 to the connecting element 13. The user then actuates the operating device 34, which restarts the hydraulic unit. The piston 10 is moved vertically upwards, so that the pulling device, in particular the pulling element 12 connected to the piston 10, preferably via the deflecting element 11, is set in motion. The connecting element 13, which is connected to the pulling element 12, is moved upwards together with the supply line 3, so that the supply line 3 is arranged at a distance from the ground surface. The hydraulic device is stopped again using the operating device 34. In the raised section, the supply line 3 runs along a Gaussian bell curve. By using the hydraulic unit, a reliable, safe, fast, and time-saving lifting of the supply line 3 can be achieved.In this case, the supply line 3 can be raised at least 0.5 m above the ground surface, preferably up to 1.0 m, within one to two seconds. During the lifting of the supply line 3, the lifting device 5 lowers due to the weight of the raised section of the supply line 3 and is supported by the spring-loaded support elements 19. The entire supply lines 3 of the greenhouse 1 are hooked into previously suspended hooks designed as additional connecting elements 36, which are each connected, for example, via a connecting cable 37 or a connecting chain, preferably to a roof structure 38 of the greenhouse 1, and remain there (see . Fig. 2). Only after the new foils have been installed are all connecting lines 3 lowered again.

[0071] As a result, the lifting device 5 can be used to successively lift the entire supply lines 3 from the ground surface upwards into the hooks suspended from the roof structure 38, which are preferably 1.2 m apart from the ground surface, in order to suspend them there permanently or temporarily. The entire greenhouse 1 can then be freed of dirt and film, which can be up to 100 m or more long, and the ground surface can be cleaned. Subsequently, new film, in particular film strips, are laid, and the supply lines 3 are successively lowered from the hooks, which are preferably designed as an upper suspension, to the ground surface using the lifting device 5.

[0072] In the Fig. 6 shows a further greenhouse 1 in which, for example, the lifting device 5 according to the third embodiment shown in the Fig. 5a, Fig. 5b could be used. The other previously described lifting devices 5 can also be used in this greenhouse 1 according to the Fig. 6 can be used. In the Fig. 6, the lifting device 5 is according to the Fig. 5a, Fig. 5b is a highly simplified visualization. An entrance area 47 for the lifting device 5 is provided in the greenhouse 1, which can be designed, for example, as a door. Behind the door is a track section 46, preferably designed as a concrete slab, for the lifting device 5, allowing it to be moved easily and quickly to the corresponding supply lines 3.

[0073] In the greenhouse 1, supply lines 3 are arranged, preferably in a rail-like manner and spaced apart from one another, on support bases 4. These supply lines are designed, for example, as heating pipes or water pipes and serve to heat or irrigate the plants and / or growths (not shown in detail). A film (not shown in detail) may be located beneath the supply lines 3 and, if applicable, the support bases 4, on which plant residues may be located, which must be removed. Furthermore, there is also a need to replace the film after a certain period of use. As shown in the Fig. 6 visualized, the supply lines 3 must be lifted. For this purpose, the lifting device 5 is used according to the Fig. 5a, Fig. 5b, wherein the lifting device 5 comprises an electrical circuit for controlling the same. The preferably manually operable and electro-hydraulic lifting device 5 can be designed as a greenhouse supply line lifting device, which is preferably designed exclusively for use in the greenhouse 1 in which the plants and / or growths are cultivated. The lifting device 5 further comprises an electrical circuit for controlling the same.

[0074] The following is used to lift the supply line 3 with the lifting device 5 according to the embodiment of the Fig. 5a and Fig. 5b.

[0075] The lifting device 5 can preferably be pushed by a user through the entrance area 47 onto the track section 46, with the main load of the lifting device 5 preferably acting on the center wheels 39. The front wheels 17 and the rear wheels 16 can be designed as swivel wheels. The rear wheels 16 and the front wheels 17 of the lifting device 5 can be arranged, in particular, at a distance of at least 2 cm from a surface of the track section 46, and the center wheels 39 can be arranged on the surface of the track section 46. Consequently, with an even weight distribution, the lifting device 5 can be designed as a rocker, so that it can be easily pivoted or rotated on the track section 46 about its own axis, in particular by 360 degrees.The rolling elements 40 of the lifting device 5 can be arranged, in particular, at a distance of at least 15 cm from the ground surface, in particular the surface of the track section 46. Thus, a user can easily and comfortably move the lifting device 5 from the track section 46 onto the supply lines 3, wherein the rolling elements 40 then come into contact with the corresponding supply lines 3 and the rear wheels 16, the front wheels 17, and the center wheels 39 are arranged at a distance from the ground surface.

[0076] The lifting device 5 can alternatively be pushed onto the supply lines 3, for example, using a ramp (not shown in detail). The rolling elements 40 come into contact with the supply lines, and the front wheels 17, the rear wheels 16, and the center wheels 39 are then arranged at a distance from the floor surface of the greenhouse 1.

[0077] A user can move the lifting device 5 by means of the handle elements 18 on the supply lines 3 from one supply line section 41 to the next supply line section 41. The user then actuates the operating device 34, which starts the hydraulic unit. The piston 10 is moved vertically downwards, so that the pulling device, in particular the pulling element 12 connected to the piston 10 preferably via the deflection element 11, is set in motion. The connecting element 13, which is connected to the pulling element 12, is moved in the direction of the supply line 3, in particular in the direction of the supply line section 42. It would also be conceivable that, additionally and / or alternatively, the pulling device, in particular the connecting element 13, is also connected to an electric drive in order to be able to move the connecting element 13 more slowly towards the supply line 3 for better adjustment.The hydraulic device or alternatively the electric drive is stopped again by means of the operating device 34.

[0078] In a further step, the user connects the supply line 3, in particular the supply line section 42, to the connecting element 13. The user then actuates the operating device 34, which restarts the hydraulic unit. The piston 10 is moved vertically upwards, so that the pulling device, in particular the pulling element 12 connected to the piston 10, preferably via the deflecting element 11, is set in motion. The connecting element 13, which is connected to the pulling element 12, is moved upwards together with the supply line 3, so that the supply line 3, in particular the supply line section 42, is arranged at a distance from the ground surface. The hydraulic device is stopped again by means of the operating device 34. The supply line 3, in particular the supply line section 42, runs along a Gaussian bell curve in the raised section.By using the hydraulic unit, a reliable, safe, fast, and time-saving lifting of the supply line 3, in particular the supply line section 42, can be achieved. Within one to two seconds, the supply line 3, in particular the supply line section 42, can be raised at least 0.5 m above the ground surface, preferably up to 1.0 m. During the lifting of the supply line 3, in particular the supply line section 42, the lifting device 5 is supported by means of the rolling elements 40 on the supply line section 41 on which the lifting device 5 is arranged.

[0079] The entire supply lines 3 of the greenhouse 1 are suspended in previously suspended hooks designed as further connecting elements 36, which are each connected, for example, via a connecting cable (not shown) or a connecting chain (not shown), preferably to a roof structure 38 of the greenhouse 1, and remain there (similar to Fig. 2). Only after the new foils have been installed are all connecting lines 3 lowered again.

[0080] As a result, the lifting device 5 according to the embodiment of the Fig. 3a-3d of the Fig. 4a-4b serve to lift the entire supply lines 3 or with the lifting device 5 according to the Fig. 5a, Fig. 5b, except for the last supply line section located at the edge, are successively lifted from the ground surface upwards into the hooks suspended from the roof structure 38, which are preferably 1.2 m apart from the ground surface, in order to suspend them there permanently or temporarily. Then, the entire greenhouse 1 can be freed of dirt and films, which can be up to 100 m or more long, and the ground surface can be cleaned. Subsequently, new films, in particular film strips, are laid, and the supply lines 3 are successively lowered from the hooks, which are preferably designed as an upper suspension, to the ground surface using the lifting device 5.

[0081] In addition, the lifting device 5 according to the invention according to the Fig. 5a, Fig. 5b has the advantage that the pivotable first mast 29 can also lift the adjacent supply lines 3, which are arranged to the left and / or right of the supply lines 3, on which the lifting device 5 is located, as shown in the Fig. 6. The first mast 29 and the support element 19 connected thereto should preferably be arranged parallel to the supply line 3 on which the lifting device 5 is arranged during movement of the lifting device 5. To ensure this, the first mast 29 and the connecting section 44 connected thereto can be pivoted or rotated in this direction, so that the first mast and the connecting section 44 are aligned in the direction of travel of the lifting device 5.

[0082] Once the point is reached (approximately every 10 m) at which the adjacent supply lines 3 are to be lifted, the first mast 29 can be automatically or manually rotated or pivoted toward the adjacent supply line 3. The support element 19 pivots along with it because it is connected to the first mast 29 via the connecting section 44. The lifting of the adjacent supply lines 3 is carried out as described above. The support element 19 can rest on the floor surface of the greenhouse 1, thereby ensuring advantageous support of the lifting device 5 and protecting it from tipping or tipping over. List of reference symbols 1 greenhouse 2 plants 3 supply line 4 support bases 5 Lifting device 6 support element 7 electrical energy storage 8 Hydraulic pump 9 hydraulic cylinders 10 pistons 11 deflection elements 12 Tension element 13 Connecting element 14 First contact section 15 Second contact section 16 rear wheel 17 front wheel 18 Handle element 19 Support element 20 First leg 21 Second leg 22 Base 23 Bearing element 24 First support element 25 Second support element 26 Third support element 27 Wheel suspension 28 connecting section 29 First mast 30 First mast section 31 Second mast section 32 Second mast 33 plate 34 Operating device 35 wheels 36 Additional connecting element 37 connecting rope 38 Roof construction 39 center wheel 40 rolling elements 41 supply line section 42 Adjacent supply line section to 41 43 guide elements 44 Stair-shaped mast section 45 beam connecting elements 46 road section 47 Entrance area for the lifting device 5

Claims

[1] Lifting device (5) for a greenhouse (1) for lifting at least one supply line (3), in particular a supply line section (42), wherein the lifting device (5) has a carrier element (6) on which at least - an electrical energy storage device (7) is arranged, - a spindle gear unit electrically connected to the electrical energy storage device (7) is arranged, - a traction device is arranged which comprises at least one deflection element (11) and at least one traction element (12), wherein the traction device is connected to the spindle gear unit in a force-locking and / or form-locking manner, wherein the tension element (12) is connected to a connecting element (13) designed to lift the supply line (3), in particular the supply line section (42), characterized by , that at least one, preferably four rolling elements (40) are arranged on the carrier element (6), which is designed to rest on the supply line (3), in particular on a supply line section (42), wherein the carrier element (6) is provided with at least one guide element (43), wherein the carrier element (6) and / or the guide element (43) is designed for arranging the rolling element (40). [2] Lifting device (5) according to claim 1, characterized by that the connecting element (13) has at least one first contact section (14) which is at least partially complementary to a geometric shape of an outer surface of the supply line (3), which is in particular round-shaped. [3] Lifting device (5) according to claim 1 or 2, characterized bythat the connecting element (13) is designed as a hook which comprises the first contact section (14) and preferably a second contact section (15) arranged mirror-symmetrically to the first contact section (14) with respect to a longitudinal axis L of the connecting element (13). [4] Lifting device (5) according to claim 2 or 3, characterized by that at least the first contact section (14) and preferably the second contact section (15) are at least partially U-shaped and are provided for the temporary and selective reception of a tubular, in particular round-shaped, supply line (3). [5] Lifting device (5) according to at least one of the preceding claims 1 to 4, characterized bythat at least one first support element (19) and preferably one second support element (19) is arranged on the support element (6), wherein preferably each support element (19) is connected to the support element (6) via at least one support spring element. [6] Lifting device (5) according to claim 5, characterized by that the distance between two wheels (16, 17, 35) arranged on the carrier element (6), which are arranged mirror-symmetrically to one another in the direction of travel, is greater than the diameter, in particular the outer diameter of a supply line (3), preferably of two supply lines (3) arranged next to one another. [7] Lifting device (5) according to at least one of claims 1 to 6, characterized by that the traction device is designed as a cable pull. [8] Lifting device (5) according to at least one of claims 1 to 7, characterized bythat one end of the tension element (12) is arranged on the support element (6), preferably fastened in a force-fitting and / or form-fitting manner. [9] Lifting device (5) according to at least one of claims 1 to 7, characterized by that the traction device, in particular the connecting element, is additionally connected to an electric drive. [10] Lifting device (5) according to at least one of claims 1 to 9, characterized by that during the lifting of a supply line section (42) the lifting device (5) is arranged on a supply line section (41) adjacent to the supply line section (42) to be lifted. [11] Lifting device (5) according to at least one of claims 1 to 10, characterized by that the spindle gear unit comprises at least a spindle unit, a thread and a follower. [12] Lifting device (5) according to at least one of claims 1 to 11, characterized bythat the lifting device (5) is provided with an electric motor drive which is operated by the electrical energy storage device. [13] Lifting device (5) according to claim 12, characterized by that the lifting device can be moved automatically by means of the electric motor drive. [14] Lifting device (5) according to claim 13, characterized by that an operating lever and a control element are provided to accelerate or decelerate the lifting device. [15] Lifting device (5) according to at least one of claims 1 to 14, characterized by that at least two wheels (35, 39), preferably four wheels (35, 39) are arranged on the support element (6), wherein the wheels (35, 39) are arranged at a distance from a ground surface when the supply line (3), in particular a supply line section (42), is lifted. [16] Lifting device (5) according to at least one of claims 1 to 15, characterized bythat the preferably manually operated lifting device (5) is designed as a greenhouse supply line lifting device. [17] Lifting device (5) according to claim 16, characterized by that the greenhouse supply line lifting device is designed exclusively for use in a greenhouse (1) in which plants (2) and / or crops are grown.

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