Automatic telescopic lifting platform

Abstract

The invention is applicable to the field of mechanical lifting systems. An automatic telescopic lifting platform is driven by a motor and comprises a chassis (2), telescopic columns (3.1, 3.2 and 3.3), an operator hanging basket (4), supporting legs (5) with supporting legs (5.2) and trundles (6). The telescopic columns (3.1, 3.2, 3.3) consist of a fixed column (3.1) and a set of movable columns (3.2, 3.3), where the movable columns (3.2, 3.3) are telescopically arranged and disposed around the base column (3.1), the fixed column (3.1) being fixed to the chassis (2) and the movable column (3.3) being fixed to the operator basket (4). Furthermore, the platform has a first drive plate (7.1) mounted in the operator basket (4) and a second drive plate (7.2) mounted in the chassis (2), the casters (6) have caster locks (6.1), the support feet (5) are retractable, and the legs (5.2) of the support feet (5) are adjustable. The first drive board (7.1) has a selector switch (9), the second drive board (7.2) has a selector switch (9), in the M0 position, the first drive board (7.1) and the second drive board (7.2) are switched off, in the M1 position, the first drive board (7.1) is switched on and the second drive board (7.2) is switched off, and in the M2 position, the first drive board (7.1) is switched off and the second drive board (7.2) is switched on.

Description

Technical Field

[0001] The invention is applied to the field of mechanical lifting systems and relates to an automatic lifting platform with a maximum height of 6 meters, which can be improved for lifting above 6 meters and is designed to be assembled and moved indoors using casters with locks.

[0002] The present invention is an improvement of the invention with the same owner and number BR 202021003709-7. Background Art

[0003] MU8701979-5 “Movable, removable platform for lifting loads and operators for carrying out maintenance at heights relative to the ground” includes equipment with built-in portable modules that can be easily articulated to each other for rapid assembly of kits, which can be transported by manpower, have a base that can be moved by wheels, are equipped with a lifting mechanism that can be activated manually by a crank articulated with a reducer, pulleys and wire ropes, or by any other means (such as racks and hydraulic pistons operated manually or electrically), are equipped with guardrails and an auxiliary table for carrying out work on its upper part, as well as a storage for tools and parts used in the service, and a ladder for the operator to access, all within the scope of the best technical description and specifications for safety and health at work, so as to reduce the positioning time to less than half of that when using ladders, due to the speed of the process used to move the auxiliary equipment, lift the load and the operator, and the reduction in the number of operators involved, and also involve reducing the number of operators by half, from four to two, thereby adding a great productivity gain to maintenance services performed at a high height relative to the ground. "A movable, removable platform for lifting loads and operators in order to carry out maintenance at a height relative to the ground" is purposely constructed with small dimensions for its base area and height, so that, when lowered, it can access various places with limited dimensions in terms of height and width, wherein, in order to compensate for the unstable balance caused by the small base area, it has extendable and retractable auxiliary legs, called outriggers, such as the devices used in crane trucks, to keep it in a safe position on the floor and side walls of the place where it is used. "A movable, removable platform for lifting loads and operators in order to carry out maintenance at a height relative to the ground" provides a high level of safety, reducing the risk level of maintenance at a high height in the electrical control room from 8 to 2, making the rate of "procedural denials" in this environment zero.

[0004] Document BR202019016610-5, "Arrangement introduced in a lifting platform drive assembly" refers to a drive assembly as part of a lifting platform, which belongs to the technical field of accessibility equipment in public transport vehicles, the lifting platform comprising a first and a second platform part; comprising a pair of columns; and comprising a drive assembly, which comprises a pantograph arm for moving the second platform part relative to the first platform part; comprising a telescopic column, formed by a fixed outer tubular part and a movable inner tubular part, and the first part of the platform is mounted in the telescopic column; comprising a pair of racks mounted on the column part; comprising a pair of pinions, which mesh in the racks; comprising a shaft on which a pinion (6) is mounted; comprising a pair of bearings, the shaft is mounted on the pair of bearings and the pair of bearings are mounted on the column part; comprising four polymer guide profiles, mounted inside the column part, and the column part is guided between the four polymer guide profiles; and a motor-reducer assembly (10).

[0005] Document BR102017003407-0, "Lifting platform with loading / unloading board for personnel by mechanical / hydraulic drive means" refers to a lifting platform including a loading / unloading board, coupled and foldable by mechanical and hydraulic drive means, for use in medium and large ships. Its movement is limited by a guide structure, in which the platform moves vertically in a path and a second unit - the loading / unloading board - moves horizontally in a path, foldable relative to the guide structure. The platform is driven by gears fixed on shafts that rotate in roller bearings, driven by roller chains coupled to hydraulically driven gear motors. The board is made of metal profiles, with a hollow non-slip floor and handrails, with a manual mechanical lock in its structure. It is driven by a rack attached to the platform and connected to a spur gear connected to a gear motor with hydraulic drive. The board has guide cars on both sides with forward and reverse displacements. At the ends of the platform, rubber stops limit the path of the board. The platform frame and guide frame include a double-cylinder wave-proof device with compression springs that force the platform downward. For nighttime operation, there are reflectors and signal lights.

[09] Most of the products in this market range are imported, which leads to difficulties in obtaining parts, high costs and long maintenance time. The typical mechanical system of these lifting platforms is driven by chains and slides with lower working heights, or by hydraulic systems and mechanisms of the so-called "scissor" type, particularly for higher lifting loads and working heights. The former are more primitive than the latter in terms of vertical movement dynamics. We are not aware of any equipment that operates in a closed space at a height range of up to 8 meters. Most equipment is equipped with an electric drive from the mechanical system.

[0006] The prior art has some disadvantages, the characteristics and consequences of which will be described below, just like other machines driven by human power.

[0007] This type of equipment is typically operator activated without regard to ergonomics to reduce fatigue and muscle pain when activated by repetitive cycles of longer duration.

[0008] The workstations usually do not have a collaborative surface that could help in the performance of the task, allowing an improvement in the operator's general cognition and his passive safety. The equipment usually does not have means of resisting lateral acceleration and sudden movements that tend to tilt the platform, causing it to tip over.

[0009] Likewise, there is no protection system for the physical environment itself, such as accidental bumps or scratches on walls and floors, etc. It can be observed that there are difficulties in transporting the device, since it is impossible to break it down into smaller parts, which would help reduce the cost of performing tasks (time) and general maintenance.

[0010] The invention patent application BR 202021003709-7 owned by the present applicant mainly utilizes manpower as energy to enable the operator to move vertically to a working height of 6 meters under a total load of 450 kg, solving the inconveniences in the prior art and thus eliminating the inconvenience of higher operating and maintenance costs caused by using other forms of energy.

[0011] As an improvement to the invention of BR 202021003709-7, the present application solves the problems of the prior art and provides a platform with automatic or semi-automatic start-up and an optimized platform lifting system. Summary of the invention

[0012] The present invention is set forth and characterized in the independent claims, while the dependent claims describe other characteristics of the invention or modes of operation related to the main inventive idea.

[0013] An automatic telescopic lifting platform, driven by an electric motor, comprises a chassis (2), telescopic columns (3.1, 3.2, 3.3), an operator's basket (4), a support foot (5) with legs (5.2) and casters (6). The telescopic columns (3.1, 3.2, 3.3) consist of a fixed column (3.1) and a group of movable columns (3.2, 3.3), wherein the movable columns (3.2, 3.3) are telescopically arranged and arranged around a base column (3.1), the fixed column (3.1) is fixed to the chassis (2) and the movable column (3.3) is fixed to the operator's basket (4). In addition, the platform has a first drive plate (7.1) installed in the operator's basket (4) and a second drive plate (7.2) installed in the chassis (2), the casters (6) have caster locks (6.1), the support foot (5) is telescopic, and the legs (5.2) of the support foot (5) are adjustable.

[0014] The support foot (5) has a handle (5.1) configured to position and adjust the adjustable leg (5.2).

[0015] The set of movable columns (3.2, 3.3) consists of three movable columns (3.2) and a movable column (3.3) fixed to the operator's basket (4). Each movable column (3.2, 3.3) is actuated by at least one threaded rod (8), preferably by exactly one threaded rod (8).

[0016] The platform reaches the maximum height H max , H max Preferably 6 meters. In addition, the platform can be used stably at any height H in the operating range, where 0≤H≤H max , where "0" corresponds to the altitude in non-operating mode, and "H max ” corresponds to the maximum altitude reached in operating mode.

[0017] The second drive plate (7.2) has a selector switch (9), wherein, in the M0 position, the first drive plate (7.1) and the second drive plate (7.2) are turned off, in the M1 position, the first drive plate (7.1) is turned on and the second drive plate (7.2) is turned off, and in the M2 position, the first drive plate (7.1) is turned off and the second drive plate (7.2) is turned on.

[0018] The platform is suitable for lifting equipment.

[0019] Purpose

[0020] The object of the present invention is to resolve the inconveniences of the current state of the art using an automated system for raising an operator to working height.

[0021] Another object is to provide a platform lift which is easy to use, easy to maneuver, has a safety lock and has low energy consumption during its use. The platform is stable, allowing safe operation during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] These and other characteristics of the invention will become apparent from the following description of some embodiments thereof given as non-limiting examples with reference to the accompanying drawings, in which:

[0023] Figure 1 A perspective view of the lifting platform in a non-operating mode is shown.

[0024] Figure 2 A perspective view of the lift is shown in operating mode.

[0025] Figure 3 A rear perspective view of the lifting platform is shown in a closed operating mode.

[0026] Figure 4 An exploded view of a movable column of a telescopic column of a lifting platform is shown.

[0027] Figure 5 A perspective view of the platform base is shown in an operational mode.

[0028] Figure 6 A side view of the platform base is shown, showing the second drive plate.

[0029] Figure 7 The drive mode of the second drive plate selector switch is shown.

[0030] Figure 8 A cross-sectional view of a telescoping column drive mechanism is shown.

[0031] Fig. 9A and Fig. 9B A cross-sectional view of a telescopic column in a non-operating mode is shown.

[0032] Fig.10 An exploded view of a telescoping column according to one embodiment is shown.

[0033] To facilitate understanding, the same reference numerals are used to identify the same common elements in the drawings where possible. It is understood that elements and features of one mode can be conveniently combined in other modes without further explanation. DETAILED DESCRIPTION

[0034] Details of some embodiments of the present invention are shown in the accompanying drawings, wherein each example is given by way of illustration and is not to be construed as limiting the invention.

[0035] The platform comprises a set of telescopic columns which move one at a time to perform characteristic vertical movements, the main purpose of which is to provide a telescopic lifting system which allows the operator to perform tasks such as repair and installation of equipment, assembly / disassembly, transfer of loads or any other activities related to logistics, maintenance and engineering at different working heights.

[0036] like Figures 1 to 3 As shown, the invention comprises a chassis (2) with castors (6), the castors comprising castor locks (6.1). Telescopic columns (3.1, 3.2, 3.3) consist of a fixed column (3.1) fixed to the chassis structure (2), a movable column (3.3) fixed to the operator's basket (4) and a set of movable columns (3.2). The movable columns (3.2, 3.3) are connected to each other by at least one threaded rod (8), preferably only one threaded rod (8), which is arranged eccentrically with respect to the geometric center of the cross section of the movable column (3.2, 3.3) and is located inside it ( Figure 4 ). This movement between the columns (3.1, 3.2, 3.3) is performed by a mechanical system consisting of a worm-type shaft equipped with gears that transmit the rotational movement along its entire length, thus moving the column from one direction to another, continuously until its working height is reached (up to 6 meters, the invention is suitable for reaching higher heights). The spindle drive system can be applied to equipment and products with the function of lifting parts, products, tools, equipment or people. The dimensions of the "TR-25 spindle-trapezoidal thread" screw system can be determined according to the load and height to be lifted. Its application can be extended to equipment such as freight elevators, telescopic arms, lifting systems, etc., while its original design as described above remains intact.

[0037] In the examples used in this specification, a maximum height of 6 meters is assumed. The maximum height may vary depending on how the telescopic columns are manufactured. For example, the design dimensions of each of the telescopic columns (3.1, 3.2, 3.3) may vary, or an additional movable column (3.2) may be included to raise or lower the maximum height that the telescopic platform can reach. For the purpose of explanation, the maximum height reached from this point on is considered to be 6 meters.

[0038] The lifting system allows the platform to be stable at any height within the range from 0m (height in non-operating mode) to 6m (maximum height in operating mode). Therefore, the operator can stably stop the platform at any height H, 0≤H≤6m.

[0039] A tubular basket corresponding to the operator's basket (4) is fixed at the upper end of the last movable column (3.3). The operator's basket (4) is equipped with a lockable door for operator access and operator safety when the platform is operating, raised to a height H.

[0040] The actuation of the telescopic column is performed via the drive plates (7.1, 7.2), the operating limits being given by the selector switch (9) located on the second drive plate (7.2). The operating position of the selector switch is Figure 7 In the disconnected position (M0), both the first drive plate (7.1) and the second drive plate (7.2) are disconnected. If the operator wants to lift the platform from inside the operator's basket (4), the selector switch (9) must be in M1 mode. In this configuration, the first drive plate (7.1) is open and the second drive plate (7.2) is closed, and the lifting or closing of the telescopic column (3.1, 3.2, 3.3) is performed by activating the first drive plate (7.1).

[0041] If the operator chooses to drive the platform from the second drive plate (7.2), the selector switch (9) must be in M2 mode. In this configuration, the first drive plate (7.1) is closed and the second drive plate (7.2) is open, and the lifting or closing of the telescopic column (3.1, 3.2, 3.3) is performed by activating the second drive plate (7.2).

[0042] like Figure 5 As shown, the positioning of the legs (5.2) of the support foot (5) is carried out with the help of a handle (5.1). This handle (5.1) allows the height of the legs (5.2) to be adjusted, thereby ensuring the stability of the platform during operation.

[0043] The platform has the following advantages:

[0044] - precise linear drives that allow stopping at the height desired by the operator in an automated manner, without shaking,

[0045] - Allows to change the working height at any height H in the range of 0 to 6 meters by lifting the telescopic column,

[0046] - allows the maximum height achieved or the standard working height to be varied by varying the number of movable columns (3.2) and worm or threaded shafts (8) in its final assembly,

[0047] - The operator's basket (4) has a non-slip floor and the door does not open outwards, which increases the operator's confidence in the equipment and the safety of the operation,

[0048] - in operating mode, the attachment of the legs (5.2) on the sides makes it possible to stabilize the device laterally by eliminating accelerations of lateral movements, preventing tilting movements,

[0049] - The presence of a spirit level on the chassis (2) ensures the operator that the device is in a stable position with an angle of inclination less than 5° in the working configuration.

[0050] In the claims presented in this document, reference signs placed between parentheses shall not be construed as limiting factors as to the field of protection.

[0051] Reference Mark List:

[0052] 2 Chassis

[0053] 3.1 Fixed telescopic column

[0054] 3.2 Mobile telescopic column

[0055] 3.3 Mobile telescopic column

[0056] 4 Operator Basket

[0057] 5 Support feet

[0058] 5.1 Handle

[0059] 5.2 Adjustable legs

[0060] 6 Casters

[0061] 6.1 Caster lock

[0062] 7.1 First driver board

[0063] 7.2 Second driver board

[0064] 8 Threaded rod (threaded spindle)

[0065] 8.1 Support bushing for telescopic column drive

[0066] 9.1 Primary transmission system

[0067] 9.2 Lifting drive transmission system

[0068] 10 24V electric motor

[0069] 11 Reducer

Claims

1. A telescopic lifting platform, comprising a chassis (2), telescopic columns (3.1, 3.2, 3.3), an operator's hanging basket (4), a supporting foot (5) with legs (5.2) and casters (6), characterized in that - the telescopic column (3.1, 3.2, 3.3) consists of a fixed column (3.1) and a set of movable columns (3.2, 3.3), wherein the movable columns (3.2, 3.3) are telescopically arranged and arranged around a base column (3.1), the fixed column (3.1) is fixed to the chassis (2) and the movable columns (3.3) are fixed to the operator basket (4), - the platform has a first drive plate (7.1) mounted in the operator's basket (4) and a second drive plate (7.2) mounted in the chassis (2), - the castor (6) has a castor lock (6.1), - the support foot (5) is retractable and the legs (5.2) of the support foot (5) are adjustable, and - The telescopic movement is automatic.

2. The telescopic lifting platform according to claim 1, characterized in that: The support foot (5) has a handle (5.1) configured to position and adjust the adjustable foot (5.2).

3. The telescopic lifting platform according to claim 1, characterized in that: The set of movable columns (3.2, 3.3) includes three movable columns (3.2) and a movable column (3.3) fixed to the operator's basket (4).

4. The telescopic lifting platform according to claim 1, characterized in that: Each movable column (3.2, 3.3) is actuated by at least one threaded rod (8).

5. The telescopic lifting platform according to claim 1, characterized in that: Each movable column (3.2, 3.3) is actuated by exactly one threaded rod (8).

6. The telescopic lifting platform according to claim 1, characterized in that: The automatic lifting system is powered by an electric motor.

7. The telescopic lifting platform according to claim 1, characterized in that: The telescopic lifting platform allows stable use in lifting at a height H, where 0≤H≤H max ,in - "0" corresponds to the altitude in non-operating mode, and -"H max ” corresponds to the maximum altitude reached in operating mode.

8. The telescopic lifting platform according to claim 7, characterized in that: The maximum operating height "H max ” is H max =6m.

9. The telescopic lifting platform according to claim 1, characterized in that: The second drive board (7.2) has a selector switch (9), wherein - in position M0, the first drive plate (7.1) and the second drive plate (7.2) are closed, - in position M1, the first drive plate (7.1) is open and the second drive plate (7.2) is closed, and In position M2, the first drive plate (7.1) is closed and the second drive plate (7.2) is open 10. The telescopic lifting platform according to claim 1, characterized in that: The telescopic lifting platform can be applied to lifting equipment.

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