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BR-102025005209-A2 - Stabilization system for self-propelled operating machines.

BR102025005209A2BR 102025005209 A2BR102025005209 A2BR 102025005209A2BR-102025005209-A2

Abstract

A stabilization system for a self-propelled operating machine is described, comprising scissor stabilizers designed to adopt an active configuration, which stabilizes the machine by raising the machine wheels off the ground, and an inactive configuration, in which the wheels are supported on the ground, and each stabilizer comprises a pair of rotating telescopic stabilizer arms; each arm comprises a first segment, rotating between an elevated and an operating position, and a second segment, sliding relative to the first between an extended and closed position and provided with a foot for contact with the ground; first and second means of movement designed to rotate/move the segments between the elevated/closed and operating/extended positions; comprising a processing unit configured to control the first and second means of movement in the steps: rotating the first segments from the operating position to an intermediate position; sliding the second segment of a first arm to the closed position; rotating the first segment of a second arm from the intermediate position to the elevated position; sliding the second segment of the second arm to the closed position; Rotate the first segment of the first arm from the intermediate position to the final position.

Inventors

  • MARCO CITIZENSHIP IOTTI

Assignees

  • MANITOU ITALIA S.R.L.

Dates

Publication Date
20260310
Application Date
20250318
Priority Date
20240319

Claims (15)

  1. 1. Method for controlling a scissor stabilizer (10) of self-propelled operating machines (1), such as telescopic handlers or similar, of the type comprising at least one pair of rotating telescopic stabilizer arms (2a, 2b), wherein each arm (2a, 2b) comprises: a first segment (21a, 21b) rotating between an elevated position and an operating position; a second segment (22a, 22b), sliding relative to the first segment (21a, 21b) between an extended position and a closed position and provided with a foot (20) for contact with the ground; wherein the stabilizer (10) can be activated between an active configuration, in which the first segments (21a, 21b) are in the operating position and the second segments are in the extended position with their respective feet (20) resting on the ground, such that the wheels (11) of said machine (1) are raised off the ground, and an inactive configuration, in which the first segments (21a, 21b) are in the raised position and the second segments (22a, 22b) are in the closed position, such that the wheels (11) rest on the ground; characterized by comprising the following steps for moving the stabilizers (10) from the active configuration to the inactive configuration: rotating the first segments (21a, 21b) from the operating position to an intermediate position (Am); sliding the second segment (22a) of a first arm (2a) to the closed position; rotating the first segment (21b) of a second arm (2b) from said intermediate position to the raised position; slide the second segment (22b) of the second arm (2b) to the closed position; rotate the first segment (21a) of the first arm (2a) from the intermediate position to the final position.
  2. 2. Method, according to claim 1, characterized by the said rotation step of the first segments (21a, 21b) from the operating position to an intermediate position (Am) comprising a first rotation, which moves the first segments (21a, 21b) from the operating position to a reference position between the rest position and the intermediate position (Am), and a second rotation, in which the first segments (21a, 21b) rotate in the opposite direction from the reference position to the intermediate position (Am).
  3. 3. Method, according to claim 1 or 2, characterized by the sliding of the second segment (22a) of a first arm (2a) to the closed position and the rotation of the first segment (21b) of the second arm (2b) from said intermediate position to the raised position occurring simultaneously.
  4. 4. Method, according to any previous claim, characterized by the sliding of the second segment (22b) of the second arm (2b) to the closed position and the rotation of the first segment (21a) of the first arm (2a) from the intermediate position to the final position occurring simultaneously.
  5. 5. Method, according to any previous claim, characterized by the rotation of the first segment (21b) of a second arm (2b) from said intermediate position to the raised position and the sliding of the second segment (22b) of the second arm (2b) to the closed position occurring simultaneously.
  6. 6. Method, according to any previous claim, characterized by the first segments (21a, 21b) performing a total angle of rotation from the operating position to the elevated position, said total angle of rotation depending on the constructive characteristics of the stabilizing device and the stabilizing conditions.
  7. 7. Method, according to any previous claim, characterized in that, in said intermediate position (Am), the angle of inclination of the first segments (21a, 21b) is greater than or equal to 50% of the total angle of rotation of the respective arms (2).
  8. 8. Method, according to any previous claim, characterized in that, in the inactive configuration of the stabilizers (10), the arms (2) are inclined upwards.
  9. 9. Method, according to any previous claim, characterized in that, in the fully closed position of the second segments (22), the arms (2) have a minimum length.
  10. 10. Stabilization system for a self-propelled operating machine (1), such as a telescopic handler or similar, comprising at least two scissor stabilizers (10), designed to adopt an active configuration, in which they stabilize the machine (1) by raising the wheels (11) of the machine (1) from the ground, and an inactive configuration, in which said wheels (11) are supported on the ground, wherein: each stabilizer (10) comprises at least one pair of rotating telescopic stabilizer arms (2a, 2b); each arm (2a, 2b) comprises a first segment (21a, 21b), rotating between a raised position and an operating position, and a second segment (22a, 22b), sliding relative to the first segment (21a, 21b) between an extended position and a closed position and provided with a foot (20) for contact with the ground; first motion means (3) are designed to rotate the first segments (21a, 21b) between the raised position and the said operating position; second motion means are designed to move the second segments (22a, 22b) between the said closed position and the said extended position; characterized by comprising a processing unit configured to control said first and second motion means to perform the following steps: rotate the first segments (21a, 21b) from the operating position to an intermediate position; slide the second segment (22a) of a first arm (2a) to the closed position; rotate the first segment (21b) of a second arm (2b) from the said intermediate position to the raised position; slide the second segment (22b) of the second arm (2b) to the closed position; rotate the first segment (21a) of the first arm (2a) from the intermediate position to the final position.
  11. 11. System, according to claim 10, characterized by the processing unit being configured to control the first and second means of movement to drive said rotation step of the first segments (21a, 21b) from the operating position to an intermediate position (Am) comprising the following steps: - a first rotation, which moves the first segments (21a, 21b) from the operating position to a reference position between the rest position and the intermediate position (Am); - a second rotation, in which the first segments (21a, 21b) rotate in the opposite direction from the reference position to the intermediate position (Am).
  12. 12. System, according to claim 10 or 11, characterized in that the processing unit is configured to control the first and second means of movement to simultaneously drive the sliding of the second segment (22a) of a first arm (2a) to the closed position and the rotation of the first segment (21b) of the second arm (2b) from said intermediate position to the raised position.
  13. 13. System, according to any one of claims 10 to 12, characterized in that the processing unit is configured to control said first and second means of movement to simultaneously drive the sliding of the second segment (22b) of the second arm (2b) to the closed position and the rotation of the first segment (21a) of the first arm (2a) from the intermediate position to the final position.
  14. 14. System, according to any one of claims 10 to 12, characterized in that the processing unit is configured to control said first and second means of movement to simultaneously drive the rotation of the first segment (21b) of a second arm (2b) from the intermediate position to the raised position and the sliding of the second segment (22b) of the second arm (2b) to the closed position.
  15. 15. Self-propelled operating machine (1), such as a telescopic handler or similar, characterized by comprising a stabilization system, as defined in any one of claims 1 to 15.

Description

DESCRIPTION [0001] The present invention relates to a system for stabilizing self-propelled operating machines, in particular rotary telescopic handlers or “telemanipulators”. [0002] There are telescopic handlers in the state of the art, consisting of a vehicle equipped with a mobile structure on wheels, comprising a platform mounted on the structure, which in turn mounts the driver's cab and an operating arm that can be extended telescopically. [0003] At the distal end of the arm there is a device for lifting or moving loads, such as a fork, a cage, a lateral transfer unit, a winch, etc. [0004] To lift and move loads at great heights and with a significant “reach” it is necessary to stabilize the vehicle by raising the wheels above the ground. [0005] There are state-of-the-art stabilizers for telescopic handlers of the type called "scissor lift", consisting of two stabilizing units, located at the front and rear of the vehicle and mounted on its structure, close to the wheels. [0006] Each stabilizing unit comprises a pair of rotating and telescopically extendable arms, generally with a single or double sliding member, which have respective distal ends, intended to be supported on the ground by means of support feet, and proximal ends, articulated to a support structure. [0007] In practice, the stabilizing arms are positioned crossed in relation to each other and, during the lift, move like scissors. [0008] Once the load handling operations are completed, the stabilizers are moved to the non-operational configuration in which they have the minimum overall dimensions, thus lowering the machine until the wheels rest on the ground. [0009] A first example of the sequence involves the arms rotating upwards until the wheels rest on the ground. During this step, the sliding limbs project from the first relative segment or “sleeve” and are therefore still extracted. At this point, the arms are rotated upwards so that they are horizontal and parallel to each other; the sliding limbs are fully retracted only after the arms reach the horizontal position, completing the recovery operations and allowing the operator to begin driving the vehicle. [0010] Although the solution provided for in the state of the art allows for a correct recovery of the stabilizers, the sector has for some time felt the need to accelerate this operation to allow for greater efficiency in the use of operational machines, which represent a limited resource, as they are notoriously very expensive and bulky. [0011] In this context, the technical purpose that forms the basis of this invention is to propose a system for stabilizing self-propelled operating machines and a method for controlling the stabilization, which overcomes the technical problems summarized above. [0012] Other features and advantages of the invention are more apparent in the detailed description below, with reference to a preferred and non-limiting embodiment of a system as illustrated in the accompanying Figures, in which: - Figure 1 is an axonometric view of a telemanipulator that includes the stabilization system according to the invention; - Figures 2, 3 and 4 are front views of the machine of Figure 1 showing different stages of the retraction sequence of the stabilizers included in the proposed system; - Figure 5 is a front view of a stabilizing unit that includes one of the two pairs of stabilizing arms that are provided in the system according to the invention. [0013] With reference to the attached Figures, the numeral 1 indicates in its entirety a vehicle comprising the system according to the invention. [0014] The system, according to the invention, is preferably, but not exclusively, structured to be implemented in a vehicle 1 consisting of a self-propelled operating machine, such as a telemanipulator or an aerial platform, etc., and may be of the rotary type or even of the fixed type, as shown in Figures 1 to 5. [0015] The system, according to the invention, includes stabilizers 10 intended to be mounted on the vehicle 1. According to the illustrated embodiment, each stabilizer 10 comprises at least one pair of telescopic stabilizer arms 2. In the following description, the telescopic stabilizer arms will be referred to simply as arms. [0016] Each arm 2 is provided with a longitudinal axis C. [0017] Preferably, the stabilizers 10 provided in the system, according to the invention, are of the type called “scissor” or “X”, and each includes a pair of arms 2, for example, with a single sliding member. The two pairs of arms are located, respectively, in a front zone and in a rear zone of the vehicle 1, close to the wheels 11. [0018] Note that when the adjective “horizontal” is used in this description, or when reference is made to “horizontal” planes, it is used to refer to horizontality in the case of flat, horizontal ground. [0019] In fact, it is clear that if the ground on which the wheels 11 or stabilizers 10 rest is not regular or is inclined, the “horizontal” refer