Modular system for the construction of a compact jack for lifting heavy loads, especially in the bodywork of the automotive industry.

Abstract

Modular construction kit for a compact jack for lifting heavy loads, especially for use in the bodywork of the automotive industry, comprising a base plate (2), a tubular housing (1) to be arranged orthogonally on the base plate (2), one or more grooved roller(s) (4) arranged in an associated housing (1) which are arranged orthogonally on the base plate (2), rolling bearings (5, 6) which support the respective grooved roller (4) at its end faces in opposite directions of rotation, an electric motor (10) whose direction of rotation is reversible, one or more roller pin(s) (8) which engage(s) in the respective groove (7) of the associated grooved roller (4), and a lifting carriage (9) which is movably driven by the electric motor (10) via the associated roller pin(s) and the associated grooved roller (4).wherein the electric motor (10) is assigned to the housing (1) on the base plate (2) in installation positions differing by 90 degrees from each other and drives the associated grooved roller (4) in opposite directions via a spur gear drive, thereby raising or lowering the load.

Description

TECHNICAL AREA

[0001] The invention relates to a modular construction kit for a compact jack for lifting heavy loads, in particular for use in body construction and in the automotive industry. STATE OF THE ART

[0002] In car body manufacturing, numerous lifting devices for lifting entire car bodies are state of the art. Such lifting devices, for example, transfer body parts or entire car bodies between different levels. Grooved rollers, driven by motors, have also been used in this context. These are generally complex and structurally sophisticated devices. TASK

[0003] The object of the invention is to propose a modular construction kit for a compact jack, which makes it possible to provide compact jacks of different sizes and arrangements using a modularly constructed kit. SOLUTION TO THE TASK

[0004] This problem is solved according to the invention by a modular construction kit for a compact jack for lifting heavy loads, in particular for use in bodywork construction in the automotive industry, comprising a base plate, a tubular housing to be arranged orthogonally on the base plate, one or more grooved roller(s) arranged in an associated housing and arranged orthogonally on the base plate, rolling bearings which support the respective grooved roller at its end faces in opposite directions of rotation, an electric motor whose direction of rotation is reversible, one or more roller pin(s) which engage(s) in the respective groove of the associated grooved roller, and a lifting carriage which is movably driven by the electric motor via the associated roller pin and the associated grooved roller.wherein the electric motor is assigned to the housing on the base plate parallel to the grooved roller, as well as at 90 degrees to the grooved roller and around this axis in installation positions differing by 90 degrees from each other, and drives the assigned grooved roller in opposite directions via a spur gear drive, thereby raising or lowering the load.

[0005] Such a modular system is not only inexpensive to manufacture, but can also be assembled with simple components to create various compact jack sizes and configurations, depending on the operating conditions and installation positions. Depending on the available space, such a compact jack can be assembled from the modular system without special tools and, if necessary, serviced (i.e., disassembled). The optional arrangement of the electric motor with its spur gear in different configurations and angles relative to the housing allows for extensive adaptation to the specific spatial conditions. Repairs can also be carried out easily and therefore cost-effectively on-site. FURTHER INVENTIVE DESIGNS

[0006] Further inventive embodiments are described in claims 2 to 10.

[0007] Claim 2 describes a modular system in which the groove(s) of the associated groove roller have / have a helix angle that is determined by the load profile. This means that the acceleration and speed profile, and possibly the deceleration, are also determined by the helix angle of the respective groove roller. For example, the helix angle at one or both ends of the groove roller can be configured as a detent angle (zero helix).

[0008] A particularly advantageous embodiment according to claim 3 is one in which the electric motor is arranged on the base plate such that it can be mounted offset in 90-degree increments about both a vertical axis and both horizontal axes. This arrangement allows for flexible alignment of the electric motor in multiple positions, thereby achieving optimal adaptation to different installation situations and operating conditions.

[0009] This allows for optimal adaptation to the specific spatial conditions where the compact jack is to be installed. Even in confined spaces, assembly, maintenance, or disassembly can be carried out without difficulty.

[0010] Claim 4 describes an embodiment characterized in that the acute angle in opposite directions is 22.5 degrees each, totaling 45 degrees, with an incremental overall swivel angle of the lifting carriage, for example, a stepwise arrangement of the lifting carriage, by a total of 180 degrees. This design enables flexible positioning of the lifting column in a total of 16 different angular positions, thereby achieving optimal adaptation to various installation situations.

[0011] Preferably, according to claim 5, the tubular housing is provided with a longitudinal opening, which has rails on both sides for guiding the lifting carriage. According to claim 6, the rails for the lifting carriage are connected to the housing by screw connections. The housing is made of a cast material GG or GGG. Embodiments in which the housing is made of cast aluminum are also conceivable.

[0012] Claim 7 is characterized in that the housing has longitudinal projections arranged at a distance from each other over a circumference.

[0013] Claim 8 describes an embodiment in which several compact jacks consisting of modular components are arranged one behind the other and / or next to each other. Claim 9 is characterized in that the component in question consists of several compact jacks arranged next to and / or one behind the other, forming a stationary or mobile unit. This makes it possible, for example, for the mobile unit to be motor-driven and for its movement sequence to be programmed.

[0014] Claim 10 is characterized in that the movable unit is motor-driven and its movement sequence is programmable. BRIEF DESCRIPTION OF THE FIGURES

[0015] The drawing illustrates the invention – partly schematically – using several exemplary embodiments. It shows: Fig. 1 to 6: A compact jack with an electric motor arranged horizontally in relation to the housing and a spur gear transmission; Fig. 7 to 12: a further embodiment of the invention with an electric motor with spur gear transmission, which is arranged with its longitudinal axis orthogonal to a base plate next to a housing, wherein the electric motor ( Fig. 11) in the Fig. 11 shown in plan view is arranged to the left at an acute angle (twisted) in relation to the housing; Fig. 13 to 18: another embodiment in which the electric motor is arranged with its longitudinal axis orthogonal to a base plate and thus parallel to the longitudinal axis of a groove roller next to the housing; Fig. 19: a cross-section through a compact jack and Fig. 20: a perspective view of the Fig. 19 visible compact lifters in a different viewing direction. DETAILED DESCRIPTION OF THE INVENTION

[0016] In the drawing, reference numeral 1 denotes a cast, tubular housing that is orthogonally arranged and fastened to a base plate 2. The base plate 2 is larger in dimension than the diameter of the housing 1. Two spaced-apart eyebolts 3 are attached to the upper end of the housing 1, for example, screwed in, to which a transport device, such as a crane hook, a crane cable, or the like, can be detachably connected in order to transport the compact jack.

[0017] A grooved roller 4 is arranged in the housing 1, rotatably mounted at its two end faces by means of rolling bearings 5, 6 in opposite directions. In the illustrated embodiment, the grooved roller 4 has a groove 7 which is application-specific, defined, for example, by its helix angle, acceleration, constant speed, and deceleration or standstill. The grooved roller 4 can be provided with a detent (zero helix angle) at both ends or at only one end. It is also possible to equip the grooved roller 4 with a groove 7 along its entire length, which has a uniform helix angle over its entire length.

[0018] In the illustrated embodiment, a roller pin 8 engages in the groove 7 of the grooved roller 4. This roller pin is associated with the lifting carriage 9, which is movable in the longitudinal direction of the grooved roller 4 and is guided on rails 12, 13 that are interchangeably attached to the housing 1 by screws. The screw heads can be covered by suitable caps. A load (not shown), for example, a body panel, a car body, or the like, can be connected to the lifting carriage 9.

[0019] The lifting carriage 9 is driven by a controllable or adjustable electric motor, for example a servo motor, which is designated by reference numeral 10 in the drawing.

[0020] In the embodiment according to Fig. In scales 1 to 6, the electric motor is arranged with its longitudinal axis horizontally, which is particularly evident from the Fig. 1 to 4 emerges.

[0021] Out of Fig. Figure 5 shows that the housing 1 is rotated relative to the electric motor 10, for example, by an acute angle to one side. In the illustrated embodiment, this acute angle is 22.5 degrees. The rotation can also be performed in incremental intermediate positions to both sides in the illustrated embodiment, each in increments of 22.5 degrees, thus totaling 45 degrees. The lifting carriage can be positioned incrementally by a total of 180 degrees.

[0022] In the embodiment according to the Fig. In contrast, in sections 7 to 12, the electric motor 10 is arranged with its longitudinal axis next to the housing 1, which is clearly evident from Fig. 7, Fig. 9 and Fig. 12 can be seen.

[0023] In the embodiment according to the Fig. In sections 13 to 18, the electric motor 10 is also arranged next to the housing 1, although the housing is positioned opposite the electric motor 10 in contrast to the embodiment according to the Fig. 1 to 6 are not arranged at an acute angle.

[0024] Reference numeral 14 in Fig. 9 denotes an electrical plug to which an electrical cable can be connected to supply power to the electric motor.

[0025] The height H is 460 mm ( Fig. 1).

[0026] All individual components of the modular system for all embodiments, namely housing 1, base plate 2, electric motor 10, spur gear drive, grooved roller 4, and lifting carriage 9, are interchangeable or designed so that they can be assembled from the modular system according to the operating conditions and available space. No special tools are required for this. The overall dimensions of the housing are also variable. The main components of the modular system, namely housing 1, base plate 2, electric motor 10, and grooved roller 4, and their arrangement in the compact lifter remain consistent even under different operating requirements and installation conditions.

[0027] For example, one or more compact jacks can be assigned to a common base plate, to which a battery and an electric drive are assigned, in order to supply the resulting lifting platform to certain positions and thereby transport body parts or entire car bodies, which are raised or lowered to the respective desired position by the compact jack(s).

[0028] Individual compact lifts can also be equipped with wheels, which are assigned to the base plate 2 and driven by an electric motor 10 powered by a battery. The entire system can be programmable. The respective base plates of pallet trucks or individual compact lifts are equipped with sensors that allow the programmable pallet trucks or individual compact lifts to move safely and autonomously to the desired positions and transport their assigned loads.

[0029] The housing is made of relatively thick-walled cast metal, either cast iron (GG) or cast aluminum, and in the illustrated embodiment has vertical projections arranged at intervals around its circumference.

[0030] Reference numeral 15 denotes a longitudinal opening in the housing 1.

[0031] The features described in the claims and in the description, as well as those shown in the drawing, can be essential for the realization of the invention, both individually and in any combination. REFERENCE MARK 1 case 2 Base plate 3 eye bolts 4 groove roller 5 rolling bearings 6 rolling bearings 7 Nut 8 roller bolts 9 lifting carriages 10 Electric motor 11 sleds 12 rail 13 rail 14 plugs, electrical 15 Longitudinal penetration

Claims

[1] Modular kit for the construction of a compact jack for lifting heavy loads, in particular for use in the bodywork of the automotive industry, comprising a base plate (2), a tubular housing (1) to be arranged orthogonally on the base plate (2), one or more grooved roller(s) (4) arranged in an associated housing (1) which are arranged orthogonally on the base plate (2), rolling bearings (5, 6) which support the respective grooved roller (4) at its end faces in opposite directions of rotation, an electric motor (10) which is reversible in its direction of rotation, one or more roller pin(s) (8) which engage(s) in the respective groove (7) of the associated grooved roller (4), a lifting carriage (9) which is movably driven by the electric motor (10) via the associated roller pin(s) and the associated grooved roller (4),wherein the electric motor (10) is assigned to the housing (1) on the base plate (2) in installation positions differing by 90 degrees from each other and drives the associated grooved roller (4) in opposite directions via a spur gear drive, thereby raising or lowering the load. [2] Modular kit according to claim 1, characterized by , that the groove(s) (7) of the associated groove roller (4) has / have an angle of inclination which is determined by the load profile. [3] Modular kit according to claim 1 or 2, characterized by , that the electric motor (10) is arranged on the base plate (2) in opposite directions at an acute angle with respect to the longitudinal axis of the housing (1). [4] Modular kit according to claim 3, characterized by, that the acute angle in opposite directions is 22.5 degrees each, totaling 45 degrees, with an incremental total swivel angle of the lifting carriage (9), for example, stepwise arrangement of the lifting carriage (9) by a total of 180 degrees. [5] Modular system according to claim 1 or one of claims 2 to 4, characterized by , that the housing (1) is provided with a longitudinal opening and has rails (12, 13) on opposite sides for guiding the lifting carriage (9), which are detachably connected to the housing (1). [6] Modular system according to claim 1 or any one of claims 2 to 5, characterized by , that the rails (12, 13) are connected to the housing (1) by screw connections. [7] Modular system according to claim 1 or any one of claims 2 to 6, characterized by , that the housing (1) has longitudinal projections arranged at a distance from each other over a circumference. [8] Modular system according to claim 1 or any one of claims 2 to 7, characterized by that several compact jacks consisting of modular kits are arranged one behind the other and / or next to each other. [9] Modular kit according to claim 8, characterized by , that the relevant modular system consists of several compact jacks arranged next to and / or behind one another, forming a stationary or mobile unit. [10] Kit according to claim 9, characterized by that the mobile unit is motor-driven and its movement sequence is programmable.

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