X-shaped leg retracted to position state detection method, device and crane

Abstract

The present application belongs to the field of engineering machinery, and particularly relates to an X-shaped outrigger retracted position detection method, device and crane. The X-shaped outrigger comprises four groups of horizontal outriggers extending in an X shape along the vehicle width direction. The end of the horizontal outrigger away from the vehicle is connected with a vertical outrigger. The ball and socket device is arranged below the vertical outrigger on the horizontal outrigger of the front side and is matched with the locking of the vertical outrigger cylinder ball head. The present application can ensure that the horizontal outrigger of the large-tonnage crane will not lose control due to the oil leakage or failure of the swing cylinder and other unexpected situations during the driving process, and then randomly swing, thereby threatening the driving safety of the vehicle. The present application can also prevent the horizontal outrigger from accidentally extending due to the misoperation when the outrigger is in the retracted state, and then colliding with the cab in front of the vehicle frame, thereby causing damage to the cab.

Description

Technical Field

[0001] The invention belongs to the field of engineering machinery, and particularly relates to a method and device for detecting the retracted position of an X-shaped outrigger, and a crane. Background Art

[0002] In the field of construction machinery, a wheeled crane is a device for lifting heavy objects. In order to improve the chassis stability and safety during crane operation, the chassis is usually equipped with an outrigger device, which includes a swing cylinder, horizontal outriggers, and vertical outriggers. X-type outriggers are a type of support for the crane's movable outriggers, and are used to maintain the crane's stability. Figure 1 、 Figure 2 As shown, it mainly includes a cab, horizontal outriggers, a swing cylinder and a frame.

[0003] During operation, the four horizontal outriggers, driven by the swing cylinders, extend in an "X" shape around the hinge point toward the outside of the frame, ensuring the crane has sufficient span to maintain operational stability. After the operation is completed, the horizontal outriggers, assisted by the swing cylinders, retract to their initial positions on both sides of the frame. To meet road driving requirements, the widest point of the retracted outriggers must not exceed the width of the frame. Furthermore, the outriggers must not swing out of control during operation due to unexpected conditions such as oil leakage or failure of the swing cylinders, potentially compromising vehicle safety. Furthermore, if the outriggers are retracted, the possibility of them being extended by mistake could easily damage the cab in front of the frame.

[0004] Patent No. 201220019058.7 “Crane and its outrigger retraction detection device” (CN202429931U) introduces a crane and its outrigger retraction detection device, such as Figure 3 This detection device ensures that the outriggers are fully retracted, preventing the operator from forgetting to retract the other outriggers before fully retracting the fifth outrigger, thereby avoiding damage to the fifth outrigger. It further prevents the operator from driving without the fifth outrigger in place, thus avoiding accidents. This improves crane operation safety and has the advantage of a simple structure. However, this only describes the detection of the fifth outrigger being fully retracted, and does not cover the detection of the extension of the other outriggers. Summary of the Invention

[0005] In response to the deficiencies in the prior art, the present invention provides a method and device for detecting the retracted state of an X-shaped outrigger, and a crane, to ensure that during the driving process of a large-tonnage crane, the horizontal outriggers will not lose control due to accidents such as oil leakage or failure of the swing cylinder, and thus swing arbitrarily, thereby threatening the driving safety of the vehicle. It can also prevent the horizontal outriggers from accidentally extending due to misoperation when the outriggers are in the retracted state, thereby colliding with the cab in front of the frame and causing damage to the cab.

[0006] The technical scheme provided by the present application is shown as follows.

[0007] The present application provides an X-shaped leg retracted state detection method, the X-shaped leg includes four groups of horizontal legs extending in X-shaped along the vehicle width direction, the end of the horizontal leg away from the vehicle is connected with a vertical leg, the ball socket device is arranged below the vertical leg on the horizontal leg of the front two groups of horizontal legs and matches with the locking of the vertical leg cylinder ball head;

[0008] The detection method comprises:

[0009] Obtaining the position information of the front two groups of horizontal legs, and judging whether the front two groups of horizontal legs are in the completely swing back state;

[0010] When the front two groups of horizontal legs are in the completely swing back state and the vertical leg cylinder ball head is correctly locked in the ball socket device, it is confirmed that the X-shaped leg is in the safe swing back state;

[0011] If the front two groups of horizontal legs are not in the completely swing back state or the vertical leg cylinder ball head is not correctly locked in the ball socket device, an alarm is sent and the vehicle is prohibited from starting or moving until all the legs are correctly swung back and locked.

[0012] Further, the position information of the horizontal leg is obtained by the first detection switch arranged on the fixed frame welded below the hinge of the front two groups of horizontal legs and the vehicle; the detection switch is used to obtain the position of the detection block.

[0013] Further, when the first detection switch detects that the front two groups of horizontal legs are in the completely swing back state, the action of extending the front horizontal leg is limited.

[0014] Further, the first detection switch is used to obtain the position of the detection block; the detection block is located on the arc-shaped edge of the tail of the front two groups of horizontal legs, and the detection block corresponds to the completely swing back position of the front two groups of horizontal legs.

[0015] Further, the detection block comprises a first full retraction detection block and a second full retraction detection block and is symmetrically arranged on both sides of the arc-shaped edge.

[0016] Further, the ball socket device is provided with a second detection switch, the second detection switch is used to cooperate with the detection block on the ball head of the vertical leg, when the front two groups of horizontal legs are in the completely swing back state, the vertical leg is controlled to extend, when the ball head of the vertical leg is in the ball socket device, the second detection switch is closed, a signal of stopping the vertical leg extension is sent to the controller to stop the vertical leg extension action.

[0017] Further, the signal of the detection switch is acquired, and whether the detection switch is normal is judged according to the signal of the detection switch, if the detection switch is invalid, an alarm is given.

[0018] The application also provides an X-type outrigger retracted position state detection device, the X-type outrigger includes four groups of horizontal outriggers extending in X shape along the vehicle width direction, the end of the horizontal outrigger away from the vehicle is connected with a vertical outrigger, the ball socket device matching and locking with the vertical outrigger cylinder ball head is arranged below the vertical outrigger on the horizontal outrigger of the front side two groups;

[0019] The detection device includes:

[0020] The position detection module is used for acquiring the position information of the front side two groups of horizontal outriggers and judging whether the front side two groups of horizontal outriggers are in the completely swing back state;

[0021] The locking state detection module is used for detecting whether the vertical outrigger cylinder ball head is correctly locked in the ball socket device when the front side two groups of horizontal outriggers are in the completely swing back state;

[0022] The control module is used for confirming that the X-type outrigger is in the safe swing back state when the detection results of the position detection module and the locking state detection module show that the front side two groups of horizontal outriggers are in the completely swing back state and the vertical outrigger cylinder ball head is correctly locked in the ball socket device; if the front side two groups of horizontal outriggers are not in the completely swing back state or the vertical outrigger cylinder ball head is not correctly locked in the ball socket device, the alarm module is used for giving an alarm, and the vehicle control system is used for prohibiting the vehicle from starting or moving until all the outriggers are correctly swung back and locked.

[0023] Further, the device also includes an outrigger panel, the outrigger panel is used for giving the horizontal outrigger and the vertical outrigger extension and retraction instructions.

[0024] The application also provides a crane including the X-type outrigger retracted position state detection device.

[0025] Beneficial effects

[0026] 1, the vertical outrigger is located in the detection ball socket device through the detection switch, the swing cylinder is avoided from being caused by oil leakage, failure and other sudden conditions, the outrigger is avoided from swinging randomly and leaving the control, the vehicle driving and personal safety are affected, and the driving safety of the vehicle is improved.

[0027] 2, the horizontal outrigger extension action is limited under the outrigger retracted state through the detection switch, the horizontal outrigger is avoided from being extended by the mistaken operation of a person, the cab in front of the vehicle frame is avoided from being bumped, and the cab is avoided from being damaged, the damage of the cab is reduced, and the maintenance cost of the vehicle is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a prior art X leg retracted state schematic (1, cab; 2, horizontal leg; 3, swing cylinder; 4 - frame);

[0029] Figure 2 is a prior art X leg extended state schematic (1, cab; 2, horizontal leg; 3, swing cylinder; 4 - frame);

[0030] Figure 3 is a prior art fifth leg retracted to detection position extended schematic;

[0031] Figure 4 is an X leg device schematic of the present invention;

[0032] Figure 5 is a ball socket device schematic of the present invention;

[0033] Figure 6 is a swing back detection switch position schematic of the present invention;

[0034] Figure 7 is an X leg safety control method flow chart of the present invention.

[0035] BRIEF DESCRIPTION OF DRAWINGS 1, cab; 2, horizontal leg; 21, fixed bracket; 22, first detection switch; 3, swing cylinder; 4, vertical leg; 41, ball socket device; 42, second detection switch; 5, frame. DETAILED DESCRIPTION

[0036] So that the objects, technical solutions and advantages of the embodiments of the present application are more apparent, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application but not all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0038] It should be noted that similar reference numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0039] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is typically placed when in use. These terms are intended solely to facilitate and simplify the description of the present invention and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," etc., etc., are used solely for distinction and should not be construed as indicating or implying relative importance.

[0040] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0041] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0042] Example 1

[0043] An embodiment of the present invention provides a method for detecting the retracted state of an X-shaped support leg, wherein the X-shaped support leg includes four groups of horizontal support legs 2 extending in an X-shape along the width direction of the vehicle. When the horizontal support legs 2 are extended, the ends away from the vehicle are connected to vertical support legs 4. Ball and socket devices 41 are provided below the vertical support legs 4 on the two front groups of horizontal support legs 2, and are matched and locked with the ball heads of the cylinders of the vertical support legs 4.

[0044] The detection method comprises:

[0045] Obtain position information of the two front sets of horizontal legs 2 to determine whether the two front sets of horizontal legs 2 are in a fully swung back state;

[0046] When the two groups of horizontal legs 2 on the front side are in a fully swung back state, and the ball heads of the vertical legs 4 cylinders are correctly locked in the ball and socket devices 41, it is confirmed that the X-shaped legs are in a safe swung back state;

[0047] If the two front horizontal support legs 2 are not in a fully retracted state or the vertical support leg 4 cylinder ball head is not correctly locked in the ball and socket device 41, an alarm will be sounded and the vehicle will be prohibited from starting or moving until all the support legs are correctly swung back and locked.

[0048] In the embodiment, the position information of the horizontal legs is obtained by the first detection switch 22 arranged on the fixed frame welded below the hinge between the two groups of horizontal legs 2 at the front side and the vehicle.

[0049] In the embodiment, when the first detection switch 22 detects that the two groups of horizontal legs 2 at the front side are in the fully swing-back state, the action of extending the horizontal legs 2 at the front side is limited.

[0050] In the embodiment, the first detection switch 22 is used to obtain the position of the detection block; the detection block is located at the arc-shaped edge of the tail of the two groups of horizontal legs 2 at the front side, and the detection block corresponds to the fully swing-back position of the two groups of horizontal legs 2 at the front side.

[0051] In the embodiment, the detection block includes a first full-retraction detection block and a second full-retraction detection block and is symmetrically arranged on both sides of the arc-shaped edge.

[0052] In the embodiment, the second detection switch 42 is arranged at the ball socket device 41, and the second detection switch 42 is used to cooperate with the detection block on the ball head of the vertical leg 4; when the two groups of horizontal legs 2 at the front side are in the fully swing-back state, the vertical leg 4 is controlled to extend; when the ball head of the vertical leg 4 is in the ball socket device 41, the second detection switch 42 is closed, a signal for stopping the extension of the vertical leg 4 is sent to the controller to stop the extension action of the vertical leg 4.

[0053] In the embodiment, the signal of the detection switch is obtained, and whether the detection switch is in normal operation is judged according to the signal of the detection switch; if the detection switch is invalid, an alarm prompt is given.

[0054] Embodiment 2

[0055] The embodiment provides an X-shaped leg retraction state detection device, which mainly includes an X-shaped leg device, a detection switch (a proximity switch), a ball socket device 41, a controller, and a display. The specific implementation scheme is as follows:

[0056] a. The leg device is as shown in FIG. 1. Figure 4 The main components include a cab 1, four groups of horizontal legs 2, a swing cylinder 3, a vertical leg 4, and a vehicle frame 5.

[0057] b. The ball socket device is as shown in FIG. 2. Figure 5As shown: the detection switch 42 is installed at the ball socket device 41. When the oil cylinder ball head of the vertical leg 4 is extended to the ball socket device 41 in the retracted state of the outrigger, the purpose is to limit the outward swing of the vertical leg 4 in the retracted state. When the second detection switch 42 at the ball socket device 41 detects the oil cylinder ball head of the vertical leg 4, the second detection switch 42 is closed, and the second detection switch 42 signal is transmitted to the controller, and the controller outputs the stop vertical leg 4 extension action command to avoid damage to the ball socket device 41 due to excessive extension and retraction of the vertical leg 4.

[0058] c. Horizontal leg swing back detection device, as shown in Figure 6 As shown: the first detection switch 22 is fixed on the fixed bracket 21 welded at the hinge of the front two groups of horizontal legs 2 and the frame 5. When the front two groups of horizontal legs 2 are in the fully swung back state, the first detection switch 22 detects the swung back horizontal leg 2, and the second detection switch 22 is turned on to transmit the electrical signal to the controller. The controller receives the signal of the second detection switch 22, and the controller issues a horizontal leg horizontal extension action limiting command. In the retracted state of the vehicle, the horizontal leg 2 is prevented from being extended by mistake, which will damage the cab 1 in front of the frame 5.

[0059] d. X-shaped outrigger safety control method flow chart and X-shaped outrigger safety control system diagram, as shown in Figure 7 The system includes outrigger panel, controller, outrigger detection switch, display. The specific detection implementation is as follows:

[0060] a) The outrigger panel is responsible for issuing the swing cylinder 3, horizontal leg 2 and vertical leg 4 extension command. After the controller receives the corresponding outrigger extension command sent by the outrigger panel, the swing cylinder 3, horizontal leg device and vertical leg device execute the action command sent by the controller.

[0061] b) When the front two groups of horizontal legs 2 are in the fully retracted state, the controller receives the signal of the first detection switch 22 at the tail of the horizontal leg 2, and the controller issues a horizontal leg 2 horizontal extension action stop command;

[0062] When the horizontal leg 2 is in the retracted state, the controller receives the signal of the second detection switch 42 at the ball socket device 41, and the controller issues a vertical leg 4 extension action stop command;

[0063] c) The display sets the interface of the horizontal leg 2 and the vertical leg 4 detection switch state. When the detection switch at a certain outrigger fails or fails, the display interface can accurately display the state of the detection switch. At the same time, it can also display the fault information of the detection switch, accurately locate the position of the detection switch, and facilitate fault troubleshooting.

[0064] The main interface of the outrigger operation displays the state of the outrigger detection switch in real time, which is convenient for the operator to intuitively check whether the outrigger extension is in place.

[0065] Embodiment 3

[0066] The embodiment of the present application also provides an X-shaped outrigger retracted position state detection device, the X-shaped outrigger comprising four groups of horizontal outriggers 2 extending in an X shape along the vehicle width direction, the end of the horizontal outrigger 2 away from the vehicle being connected with a vertical outrigger 4, and a ball socket device 41 being arranged below the vertical outrigger 4 on the horizontal outriggers 2 of the front two groups and being matched with the ball head of the vertical outrigger 4 for locking;

[0067] The detection device comprises:

[0068] a position detection module, configured to acquire position information of the front two groups of horizontal outriggers 2 and to determine whether the front two groups of horizontal outriggers 2 are in a fully swung back state;

[0069] a locking state detection module, configured to detect whether the ball head of the vertical outrigger 4 is correctly locked in the ball socket device 41 when the front two groups of horizontal outriggers 2 are in the fully swung back state;

[0070] a control module, configured to confirm that the X-shaped outrigger is in a safe swung back state when the detection results of the position detection module and the locking state detection module show that the front two groups of horizontal outriggers 2 are in the fully swung back state and the ball head of the vertical outrigger 4 is correctly locked in the ball socket device 41, and configured to issue an alarm through an alarm module and to prohibit the vehicle from starting or moving through a vehicle control system when any of the detection results of the position detection module or the locking state detection module shows an abnormality, i.e., the front two groups of horizontal outriggers 2 are not in the fully swung back state or the ball head of the vertical outrigger 4 is not correctly locked in the ball socket device 41.

[0071] In the embodiment, the device further comprises an outrigger panel, the outrigger panel being configured to issue outrigger 2 and vertical outrigger 4 extension and retraction instructions.

[0072] Embodiment 4

[0073] A crane comprising the X-shaped outrigger retracted position state detection device of Embodiment 3.

[0074] Abbreviations and key terms definition

[0075] X-shaped outrigger: a support form of movable outrigger, which can freely swing around a hinge point and is unfolded in an “X” shape in a working state.

[0076] Detection switch (proximity switch): a non-contact proximity switch which can be turned on or off when an object approaches the switch sensing surface to a certain distance without mechanical direct contact operation with the moving part.

[0077] Controller: A safe, intelligent controller that converts input signals into output signals through calculations, consisting of a microprocessor, memory, input / output (I / O) interfaces, analog-to-digital converters (A / D), and large-scale integrated circuits such as shapers and drivers.

[0078] Display: A device that displays electronic signals on a screen via a specific transmission device. It is used to display and store the vehicle's operating status.

[0079] Outrigger panel: An electrical device used to control the extension and retraction of the outriggers.

Claims

1. A method for detecting the retracted state of an X-shaped outrigger, characterized in that: The X-shaped legs include four groups of horizontal legs extending in an X-shape along the width direction of the vehicle. When the horizontal legs are extended, the ends away from the vehicle are connected to vertical legs. Ball and socket devices are provided below the vertical legs on the two front groups of horizontal legs, which match and lock with the ball heads of the vertical leg cylinders. The detection method comprises: Obtain the position information of the two sets of horizontal support legs on the front side and determine whether the two sets of horizontal support legs on the front side are in a fully swung back state; When the two sets of horizontal outriggers on the front side are in the fully swung back state and the ball heads of the vertical outrigger cylinders are correctly locked in the ball and socket devices, confirm that the X-type outriggers are in the safe swung back state; If the two sets of horizontal outriggers on the front side are not in the fully retracted state or the ball heads of the vertical outrigger cylinders are not properly locked in the ball and socket devices, an alarm will sound and the vehicle will be prohibited from starting or moving until all outriggers are properly swung back and locked; The position information of the horizontal legs is obtained by a first detection switch provided on a fixing frame welded below the hinged joints of the two front sets of horizontal legs and the vehicle; A second detection switch is provided at the ball-and-socket device, and the second detection switch is used to cooperate with the detection block on the ball head of the vertical leg. When the two groups of horizontal legs located on the front side are in a fully swung-back state, the vertical leg is controlled to be extended. When the ball head of the vertical leg is in the ball-and-socket device, the second detection switch is closed, and a signal to stop extending the vertical leg is sent to the controller to stop the vertical leg extension action.

2. The method for detecting the retracted state of an X-shaped outrigger according to claim 1, characterized in that: When the first detection switch detects that the two groups of front horizontal legs are in the fully swung back state, the extension movement of the front horizontal legs is restricted.

3. The method for detecting the retracted state of an X-shaped outrigger according to claim 1, characterized in that: The first detection switch is used to obtain the position of the detection block; the detection block is located at the arc-shaped edge of the tail of the two front sets of horizontal legs, and the detection block corresponds to the two front sets of horizontal legs fully swinging back to the position.

4. The method for detecting the retracted state of an X-shaped outrigger according to claim 3, characterized in that: The detection blocks include a first fully shrinkable detection block and a second fully shrinkable detection block and are symmetrically arranged on both sides of the arc edge.

5. The method for detecting the retracted state of an X-shaped outrigger according to claim 1, characterized in that: The detection switch includes a first detection switch and a second detection switch. The signal of the detection switch is obtained, and whether the detection switch is operating normally is judged according to the signal of the detection switch. If the detection switch fails, an alarm prompt is issued.

6. An X-shaped leg retracted position detection device, characterized in that: The X-shaped legs include four groups of horizontal legs extending in an X-shape along the width direction of the vehicle. When the horizontal legs are extended, the ends away from the vehicle are connected to vertical legs. Ball and socket devices are provided below the vertical legs on the two front groups of horizontal legs, which match and lock with the ball heads of the vertical leg cylinders. The detection device comprises: A position detection module is used to obtain the position information of the two sets of horizontal legs on the front side and determine whether the two sets of horizontal legs on the front side are in a fully swung back state; The locking state detection module is used to detect whether the ball heads of the vertical leg cylinders are correctly locked in the ball and socket devices when the two sets of horizontal legs on the front side are in the fully swung back state; a control module configured to confirm that the X-shaped outriggers are in a safe swung-back state when the detection results of the position detection module and the locking state detection module indicate that the two front sets of horizontal outriggers are in a fully swung-back state and the ball heads of the vertical outrigger cylinders are correctly locked in the ball-and-socket devices; and to issue an alarm through the alarm module if the two front sets of horizontal outriggers are not in a fully retracted state or the ball heads of the vertical outrigger cylinders are not correctly locked in the ball-and-socket devices, and to prohibit the vehicle from starting or moving through the vehicle control system until all outriggers are correctly swung back and locked; The position information of the horizontal legs is obtained by a first detection switch provided on a fixing frame welded below the hinged joints of the two front sets of horizontal legs and the vehicle; A second detection switch is provided at the ball-and-socket device, and the second detection switch is used to cooperate with the detection block on the ball head of the vertical leg. When the two groups of horizontal legs located on the front side are in a fully swung-back state, the vertical leg is controlled to be extended. When the ball head of the vertical leg is in the ball-and-socket device, the second detection switch is closed, and a signal to stop extending the vertical leg is sent to the controller to stop the vertical leg extension action.

7. The X-shaped leg retracted position detection device according to claim 6, further comprising a leg panel, wherein the leg panel is used to issue horizontal leg and vertical leg extension and retraction instructions.

8. A crane, characterized in that: It includes the X-shaped support leg retracted position state detection device as described in claim 6.

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