Outrigger telescoping device, work machine and usage method

Abstract

The present invention relates to the technical field of engineering machinery, and provides a leg extension device, an operating machine and a method of using the leg extension device, the leg extension device comprising a base, a first telescopic arm, a second telescopic arm, a first sensing element and a second sensing element; the base forms a first inner cavity; the first telescopic arm is pulled and connected to the first inner cavity, and the first telescopic arm forms a second inner cavity; the second telescopic arm is pulled and connected to the second inner cavity; the first sensing element is connected to the cavity wall of the first inner cavity; the second sensing element is connected to the first telescopic arm and the second telescopic arm through a toggle assembly, and the first telescopic arm and the second telescopic arm are suitable for switching the first sensing element and the second sensing element between an identification position and a non-identification position through telescopic movement, and when located at the identification position, the first telescopic arm and the second telescopic arm are both at a predetermined extension distance. The operator can determine whether the first telescopic arm and the second telescopic arm are extended to the position according to the sensing signal, thereby ensuring that the leg is in a fully extended state.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering machinery, and in particular to a leg extension and retracting device, an operating machine and a use method thereof. Background Art

[0002] Cranes, concrete pump trucks and other operating machines are often used in the engineering field. The cantilever system of the operating machine is used to increase the scope of engineering operations and improve the convenience of engineering operations. However, the cantilever system will form a bending moment when working, which will lead to poor stability of the operating machine. Therefore, it is necessary to set up outriggers to increase the stability of the operating machine. At present, the front outriggers of the operating machine are mostly telescopically deployed, and the rear outriggers are mostly swingingly deployed. The four outriggers are deployed to support the ground to form a square or trapezoidal support system, which is used to withstand the weight of the crane or concrete pump truck and the bending moment generated by the weight of the boom system, so as to avoid the overturning of the operating machine during operation. The deployment of the outriggers is a prerequisite for the stability of the operating machine. In the related technology, whether the outrigger assembly is deployed in place depends entirely on the worker's operation. The reliability is low by detecting whether the outrigger is deployed in place by sticking labels or pulling wire sensors. Summary of the invention

[0003] The present invention provides a leg extension and retraction device, which is used to solve the defect of inaccurate leg expansion detection in the related art, and can ensure that the legs are fully expanded, thereby improving the stability of the operating machinery.

[0004] An embodiment of the present invention further provides a working machine.

[0005] The embodiment of the present invention also provides a method for using the leg extension and retracting device.

[0006] According to the first aspect of the present invention, a leg extension and retraction device is provided, comprising:

[0007] A base body, forming a first inner cavity;

[0008] A first telescopic arm, connected to the first inner cavity by pulling, and the first telescopic arm forms a second inner cavity;

[0009] A second telescopic arm, connected to the second inner cavity by pulling;

[0010] A first sensing element connected to the cavity wall of the first inner cavity;

[0011] a second sensing element connected to the first telescopic arm and the second telescopic arm via a toggle assembly;

[0012] Wherein, the first telescopic arm and the second telescopic arm are suitable for switching the first sensing element and the second sensing element between an identification position and a non-identification position through telescopic movement, and when the first sensing element and the second sensing element are located at the identification position, the first telescopic arm and the second telescopic arm are both at a predetermined extension distance.

[0013] According to a leg extension and retracting device provided by the present invention, the predetermined extension distance is the maximum extension distance of the first telescopic arm and the second telescopic arm or a safety interval near the maximum extension distance.

[0014] According to a leg extension and retraction device provided by the present invention, the extension and retraction movement of the first extension arm is suitable for adjusting a partial distance of the second sensing element from the non-identification position to the identification position, and the extension and retraction movement of the second extension arm is suitable for adjusting the remaining distance of the second sensing element from the non-identification position to the identification position.

[0015] According to a leg extension and retraction device provided by the present invention, when the extension and retraction movement of the first extension arm causes the second sensing element to move from the non-identification position to the identification position, the movement is a linear movement;

[0016] When the telescopic movement of the second telescopic arm causes the second sensing element to move from the non-identification position to the identification position, the movement is rotational movement or linear movement.

[0017] According to a leg telescopic device provided by the present invention, a through hole communicating with the first inner cavity and the second inner cavity is formed on the side wall of the first telescopic arm, a protrusion is formed on one side of the second telescopic arm close to the through hole, and the toggle assembly includes:

[0018] A transmission member, formed with a first transmission end and a second transmission end opposite to each other, the transmission member being slidably connected to the first telescopic arm, and the second sensing element being connected to the second transmission end;

[0019] The toggle member is connected to the first transmission end through a connecting rod, the connecting rod is inserted into the through hole, the toggle member is located in the second inner cavity, and the protrusion is used to drive the toggle member to slide relative to the first telescopic arm.

[0020] According to a leg extension and retraction device provided by the present invention, the toggle member and the protrusion are arranged front and back along the extension and retraction direction of the second telescopic arm, and when the protrusion moves in a direction away from the vehicle body, the protrusion drives the toggle member to move together.

[0021] According to a leg extension and retraction device provided by the present invention, the toggle assembly further includes:

[0022] A motion recovery component is connected to the transmission member and the first telescopic arm, and the motion recovery component is suitable for causing the second transmission end to move in a direction away from the through hole.

[0023] According to a leg extension and retraction device provided by the present invention, the motion recovery component comprises:

[0024] The swing arm is rotatably connected to the first telescopic arm through a fixed axis, and the swing arm is formed with a first rotating end and a second rotating end relative to each other. The first rotating end is rotatably connected to the second transmission end, and the second rotating end is connected to the second sensing element. The swing arm is suitable for causing the second transmission end to move in a direction away from the through hole through the action of gravity.

[0025] According to a leg extension and retracting device provided by the present invention, the transmission member includes a pull rope or a transmission rod.

[0026] According to a leg extension and retraction device provided by the present invention, the transmission member is a transmission rod, and the motion recovery component includes:

[0027] An elastic member, two ends of which are respectively connected to the transmission member and the first telescopic arm.

[0028] According to a leg extension and retraction device provided by the present invention, the toggle assembly further includes:

[0029] At least two positioning members, the positioning members are connected to the first telescopic arm, and a slide groove is formed on the positioning member, and the transmission member is slidably connected to the slide groove.

[0030] The working machine provided according to the embodiment of the second aspect of the present invention comprises the leg extension and retracting device provided according to the embodiment of the first aspect of the present invention.

[0031] A method for using a leg extension and retracting device according to a third aspect of the present invention includes:

[0032] Continue to unfold the first telescopic arm and the second telescopic arm;

[0033] When receiving the sensing signal generated by the cooperation of the first sensing element and the second sensing element, the unfolding of the first telescopic arm and the second telescopic arm is terminated.

[0034] According to a method for using a leg extension and retraction device provided by the present invention, when receiving the induction signal generated by the cooperation of the first induction element and the second induction element, the method further includes:

[0035] Issue a prompt message.

[0036] The above one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:

[0037] According to the first aspect of the present invention, the leg extension and retraction device provided by the embodiment includes a base, a first telescopic arm, a second telescopic arm, a first sensing element and a second sensing element; a first inner cavity is formed in the base, the first telescopic arm is connected to the first inner cavity by pulling, a second inner cavity is formed inside the first telescopic arm, and the second telescopic arm is connected to the second inner cavity by pulling; the first sensing element is connected to the cavity wall of the first inner cavity, and the second sensing element is connected to the first telescopic arm and the second telescopic arm through a toggle assembly. The first telescopic arm and the second telescopic arm are suitable for switching the first sensing element and the second sensing element between the identification position and the non-identification position through telescopic movement. When the first sensing element and the second sensing element are in the identification position, the first telescopic arm and the second telescopic arm are both at a predetermined extension distance. The operator can determine whether the first telescopic arm and the second telescopic arm are extended to the position according to the sensing signal, thereby ensuring that the leg is in a fully extended state.

[0038] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the present invention or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0040] Figure 1 The partial cross-section diagram of the leg extension device provided by the embodiment of the present invention is Figure 1 ;

[0041] Figure 2 The partial cross-section diagram of the leg extension device provided by the embodiment of the present invention is Figure 2 ;

[0042] Figure 3 yes Figure 1 AA section view;

[0043] Figure 4 is a schematic diagram of a first telescopic arm and a toggle assembly provided in an embodiment of the present invention;

[0044] Figure 5 is a schematic diagram of a toggle assembly provided by an embodiment of the present invention;

[0045] Figure 6 is a schematic diagram of a second telescopic arm provided in an embodiment of the present invention;

[0046] Figure 7The partial cross-section diagram of the leg extension device provided by the embodiment of the present invention is Figure 3 ;

[0047] Figure 8 It is a flow chart of a method for using the leg extension and retracting device provided in an embodiment of the present invention.

[0048] Reference numerals:

[0049] 100, substrate; 102, first inner cavity; 110, first telescopic arm; 112, second inner cavity; 114, through hole; 120, second telescopic arm; 130, first sensing element; 140, second sensing element;

[0050] 200, toggle assembly; 210, transmission member; 212, first transmission end; 214, second transmission end; 220, toggle member; 222, connecting rod; 230, protrusion; 242, fixed shaft; 244a, swing arm; 244b, elastic member; 246, strip hole; 248, counterweight; 250, positioning member. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] The outriggers being fully deployed is a prerequisite for the stability of the operating machinery. In related technologies, whether the outriggers are fully deployed depends entirely on the workers' operation. The reliability is low by detecting whether the outriggers are fully deployed through methods such as sticking labels or pulling wire sensors.

[0053] According to the first aspect of the present invention, the leg extension device provided by the embodiment is shown in FIG. Figures 1 to 7 , includes a base 100 , a first telescopic arm 110 , a second telescopic arm 120 , a first sensing element 130 , a second sensing element 140 and a toggle assembly 200 .

[0054] In working machines such as cranes and concrete pump trucks, the body is connected with front legs and rear legs, etc., and the front legs and rear legs are used to improve the stability of the working machine. The base 100 of the leg telescopic device is suitable for being connected to the body, and the end of the leg telescopic device away from the body is suitable for being connected to the front legs or the rear legs, and the leg telescopic device is used to adjust the distance between the front legs and the rear legs and the body.

[0055] The base body 100 has great strength and can withstand large bending moments and shear forces, thus avoiding deformation and instability under the self-weight of the vehicle body and the load bending moment. The base body 100 is formed with a first inner cavity 102. An opening communicating with the first inner cavity 102 is formed at one end of the base body 100 away from the vehicle body. The first telescopic arm 110 is telescopically connected to the first inner cavity 102. When the first telescopic arm 110 is fully inserted into the first inner cavity 102, the total length of the base body 100 and the first telescopic arm 110 is the smallest, occupying less space and being convenient for storage. When the first telescopic arm 110 is at a predetermined extended distance, the total length of the base body 100 and the first telescopic arm 110 is the largest, which is beneficial to increasing the extended distance of the outrigger and improving the anti-overturning ability of the working machine.

[0056] The tail of the base body 100 is rotatably connected to the vehicle body. By swinging the angle of the base body 100, the outrigger can be swung to a suitable supporting angle.

[0057] In some embodiments, the base body 100 can be another telescopic arm, and the base body 100 can perform telescopic movement relative to the vehicle body, thereby driving the outrigger to contract or expand.

[0058] In other embodiments, the base body 100 includes a plurality of telescopic joints and can also include other support and cantilever structures.

[0059] The first telescopic arm 110 is formed with a second inner cavity 112. An opening communicating with the second inner cavity 112 is formed at one end of the first telescopic arm 110 away from the base body 100. The second telescopic arm 120 is telescopically connected to the second inner cavity 112. When the second telescopic arm 120 is fully inserted into the second inner cavity 112, the total length of the first telescopic arm 110 and the second telescopic arm 120 is the smallest, occupying less space. When the second telescopic arm 120 is at a predetermined extended distance, the total length of the first telescopic arm 110 and the second telescopic arm 120 is the largest, which is beneficial to improving the anti-overturning ability of the working machine.

[0060] It can be understood that after the outrigger located at the end of the second telescopic arm 120 swings to a suitable supporting angle, by stretching, both the first telescopic arm 110 and the second telescopic arm 120 are at a predetermined extended distance, and the total length of the base body 100, the first telescopic arm 110 and the second telescopic arm 120 is the largest. At this time, the outrigger is fully extended and the anti-overturning ability is the strongest.

[0061] It should be noted that when the first telescopic arm 110 and the second telescopic arm 120 are both at a predetermined extended distance, the base body 100, the first telescopic arm 110 and the second telescopic arm 120 are stably connected, and an anti-disengagement structure is provided between each two of them, so that they will not fall off or deform under the action of external forces.

[0062] In order to ensure that the first telescopic arm 110 and the second telescopic arm 120 are fully deployed during operation, it is necessary to detect the extension distances of the first telescopic arm 110 and the second telescopic arm 120 .

[0063] The leg extension and retraction device provided according to the embodiment of the present invention further includes a first sensing element 130 and a second sensing element 140 .

[0064] It can be understood that one of the first sensing element 130 and the second sensing element 140 is a sensor and the other is a sensing block. When the two are close to each other, a sensing signal will be generated. The sensing signal is suitable for being sent to a display component or a prompt component to remind the operator whether the first telescopic arm 110 and the second telescopic arm 120 are fully deployed.

[0065] In some embodiments, one of the first sensing element 130 and the second sensing element 140 is a signal transmitter, and the other is a signal receiver, so that position sensing can be achieved.

[0066] The first sensing element 130 is disposed in the first inner cavity 102 and connected to the cavity wall of the first inner cavity 102. The second sensing element 140 is connected to the first telescopic arm 110 and the second telescopic arm 120 through the toggle assembly 200. Under the telescopic movement of the first telescopic arm 110 and the second telescopic arm 120, the first sensing element 130 and the second sensing element 140 can be switched between the recognition position and the non-recognition position.

[0067] At the identification position, the first telescopic arm 110 and the second telescopic arm 120 are both at a predetermined extension distance, and the first sensing element 130 corresponds to the second sensing element 140. At this time, the first sensing element 130 or the second sensing element 140 generates a sensing signal, and the operator can confirm that the first telescopic arm 110 and the second telescopic arm 120 are deployed in place at the same time according to the sensing signal.

[0068] In the non-identification position, the first sensing element 130 and the second sensing element 140 are offset from each other, and the first sensing element 130 or the second sensing element 140 does not generate a sensing signal. The operator thereby confirms that the first telescopic arm 110 and the second telescopic arm 120 are not fully deployed and need to be further extended.

[0069] The toggle assembly 200 is connected to the first telescopic arm 110 and the second telescopic arm 120. The toggle assembly 200 is affected by the first telescopic arm 110 and the second telescopic arm 120 at the same time, and only when the first telescopic arm 110 and the second telescopic arm 120 are unfolded into place at the same time, will it drive the second sensing element 140 to correspond to the first sensing element 130.

[0070] In some cases, the predetermined extended distance is the maximum extended distance of the first telescopic arm 110 and the second telescopic arm 120. For example, the maximum extended distance of both the first telescopic arm 110 and the second telescopic arm 120 is 1.00 m. When both the first telescopic arm 110 and the second telescopic arm 120 are extended by 1.00 m, the first sensing element 130 or the second sensing element 140 generates a sensing signal.

[0071] In other cases, the predetermined extended distance is a safety interval near the maximum extended distance. For example, the maximum extended distance of both the first telescopic arm 110 and the second telescopic arm 120 is 1.00 m, and the safety interval is from 0.95 m to 1.00 m. When the extended distances of both the first telescopic arm 110 and the second telescopic arm 120 are between 0.95 m and 1.00 m, the second sensing element 140 corresponds to the first sensing element 130.

[0072] According to the outrigger telescoping device provided by the embodiment of the present invention, the second sensing element 140 is connected to the first telescopic arm 110 and the second telescopic arm 120 through a toggling assembly 200. Under the telescopic movement of the first telescopic arm 110 and the second telescopic arm 120, the first sensing element 130 and the second sensing element 140 can be switched between the recognition position and the non-recognition position.

[0073] In some embodiments, the first telescopic arm 110 is adapted to adjust a partial distance of the second sensing element 140 from the non-recognition position to the recognition position through telescopic movement, and the second telescopic arm 120 is adapted to adjust the remaining partial distance of the second sensing element 140 from the non-recognition position to the recognition position through telescopic movement.

[0074] It can be understood that when the first telescopic arm 110 moves from the initial position to the predetermined extended distance, the second sensing element 140 moves closer to the recognition position by a partial distance from the non-recognition position. When the second telescopic arm 120 moves from the initial position to the predetermined extended distance, the second sensing element 140 moves closer to the recognition position by the remaining partial distance from the non-recognition position. After the two partial distances are superimposed, the second sensing element 140 corresponds to the first sensing element 130.

[0075] It should be noted that the movement processes of the first telescopic arm 110 and the second telescopic arm 120 are independent of each other. The two movement processes when the second sensing element 140 moves closer to the recognition position from the non-recognition position can be carried out simultaneously or separately.

[0076] In some cases, the first telescopic arm 110 and the second telescopic arm 120 drive the second sensing element 140 to move in equal proportion. When both the first telescopic arm 110 and the second telescopic arm 120 are at the predetermined extended distance, the first sensing element 130 and the second sensing element 140 are at the recognition position.

[0077] In other cases, the second sensing element 140 first follows the movement of one of the first telescopic arm 110 or the second telescopic arm 120. After moving to a certain position, the other telescopic arm transmits the second sensing element 140. After the two movements are superimposed, the first sensing element 130 and the second sensing element 140 are in the identification position.

[0078] According to the leg extension and retraction device provided by an embodiment of the present invention, when the extension and retraction movement of the first extension arm 110 causes the second sensing element 140 to move from a non-identification position to an identification position, the movement is a linear movement; when the extension and retraction movement of the second extension arm 120 causes the second sensing element 140 to move from a non-identification position to an identification position, the movement is a rotational movement or a linear movement.

[0079] In some cases, the second sensing element 140 corresponds to the first sensing element 130 after one linear motion and one rotational motion.

[0080] In other cases, the second sensing element 140 corresponds to the first sensing element 130 after two linear movements.

[0081] exist Figures 1 to 7 In the figure, the first sensing element 130 is connected to the cavity wall of the first inner cavity 102. When showing the partial cross-sectional view, in order to show the existence of the first sensing element 130, the first sensing element 130 is left in the figure to facilitate showing the relative position relationship between the first sensing element 130 and the second sensing element 140.

[0082] In some embodiments, a through hole 114 is formed on the side wall of the first telescopic arm 110, and the through hole 114 is connected to the first inner cavity 102 and the second inner cavity 112. A protrusion 230 is formed on the side of the second telescopic arm 120 close to the through hole 114, and the protrusion 230 and the through hole 114 are arranged front and back along the telescopic direction of the second telescopic arm 120.

[0083] The toggle assembly 200 includes a transmission member 210 and a toggle member 220 . The transmission member 210 is formed with a first transmission end 212 and a second transmission end 214 opposite to each other. The transmission member 210 is slidably connected to the first telescopic arm 110 . The second sensing element 140 is connected to the second transmission end 214 .

[0084] It can be understood that the sliding direction of the transmission member 210 is the same as the telescopic direction of the first telescopic arm 110 . When the first telescopic arm 110 extends outward, it can drive the transmission member 210 to move in a direction away from the vehicle body.

[0085] The toggle member 220 is connected to the first transmission end 212 via a connecting rod 222 . A through hole 114 is formed on the first telescopic arm 110 . The connecting rod 222 passes through the through hole 114 . The toggle member 220 is located in the second inner cavity 112 , and the transmission member 210 is located in the first inner cavity 102 .

[0086] When the second telescopic arm 120 extends outward relative to the first telescopic arm 110 , the protrusion 230 drives the toggle member 220 to slide relative to the first telescopic arm 110 , thereby driving the transmission member 210 and the second sensing element 140 to move.

[0087] It should be noted that the size of the through hole 114 is larger than the connecting rod 222, and the connecting rod 222 can move in the through hole 114, thereby causing the toggle member 220 to move relative to the first telescopic arm 110. The through hole 114 can be a bar-shaped hole, and the extension direction of the bar-shaped hole is the same as the telescopic direction of the second telescopic arm 120. The through hole 114 is connected to the first inner cavity 102 and the second inner cavity 112, and the transmission member 210 is connected to the second telescopic arm 120 through the through hole 114.

[0088] In the process of switching from the non-identification position to the identification position, the first telescopic arm 110 drives the transmission member 210 and the second sensing element 140 to extend. When the first telescopic arm 110 extends outward by a predetermined extension distance, the transmission member 210 and the second sensing element 140 move synchronously. When the second telescopic arm 120 extends outward, the protrusion 230 drives the toggle member 220 to move in a direction away from the vehicle body. When the second telescopic arm 120 extends outward by a predetermined extension distance, the connecting rod 222 slides in the through hole 114 to the end away from the vehicle body. Under the joint action of the first telescopic arm 110 and the second telescopic arm 120, the transmission member 210 moves twice, so that the first sensing element 130 and the second sensing element 140 are in the identification position.

[0089] According to an embodiment of the present invention, when the operating machine is working, the first telescopic arm 110 and the second telescopic arm 120 are extended, and the legs are away from the vehicle body, and the legs can support the operating machine; when the operating machine is completed, the first telescopic arm 110 and the second telescopic arm 120 are retracted, and the first sensing element 130 and the second sensing element 140 are switched to the non-recognition position, which is convenient for the next use.

[0090] The toggle assembly 200 further includes a motion recovery component, which is connected to the transmission member 210 and the first telescopic arm 110 . The motion recovery component can enable the second transmission end 214 to move in a direction away from the through hole 114 .

[0091] It can be understood that when the first telescopic arm 110 and the second telescopic arm 120 are retracted, the motion recovery component can automatically restore the transmission member 210 to its initial position, that is, the connecting rod 222 slides from the end away from the vehicle body in the through hole 114 to the end close to the vehicle body, preparing for the next extension detection.

[0092] In some embodiments, the motion recovery component includes a swing arm 244a. A fixed shaft 242 is formed on the outer side wall of the first telescopic arm 110 and extends in the direction of the cavity wall of the first inner cavity 102. The swing arm 244a is rotatably connected to the first telescopic arm 110 through the fixed shaft 242.

[0093] Please refer to Figure 5 , the swing arm 244a is formed with opposite first and second rotating ends, and the first and second rotating ends are located on different sides of the fixed shaft 242. The first rotating end is rotatably connected to the second transmission end 214, and the second rotating end is connected to the second sensing element 140.

[0094] When switching from the non-identification position to the identification position, the transmission member 210 moves in a direction away from the vehicle body. The second transmission end 214 drives the first rotating end to move, causing the second sensing element 140 to rotate around the fixed shaft 242 and gradually approach the first sensing element 130.

[0095] When switching from the identification position to the non-identification position, under the gravity of the second rotating end and the second sensing element 140, the swing arm 244a automatically rotates, causing the transmission member 210 to move in a direction close to the vehicle body, and the connecting rod 222 slides from the end away from the vehicle body within the through hole 114 to the end close to the vehicle body.

[0096] It should be noted that the weight of the second rotating end and the second sensing element 140 is greater than that of the first rotating end, which is sufficient to overcome the resistance during the sliding of the transmission member 210 during rotation.

[0097] In some embodiments, a counterweight portion 248 is provided at the second rotating end, and the counterweight portion 248 is used to balance the resistance during the sliding of the transmission member 210.

[0098] It can be understood that the volume and weight of the counterweight portion 248 are determined according to the sliding resistance of the transmission member 210 to ensure that the swing arm 244a can automatically rotate along the fixed shaft 242.

[0099] In some embodiments, a strip-shaped hole 246 is further formed at the first rotating end, and the second transmission end 214 is rotatably connected to the strip-shaped hole 246.

[0100] It can be understood that when the swing arm 244a rotates around the fixed shaft 242, the first rotating end makes an arc-shaped movement, and the first transmission end 212 makes a linear movement. The strip-shaped hole 246 increases the adaptability during the movement of the two, helps to reduce the resistance of the swing arm 244a to rotate, improves the effectiveness of the motion recovery component, and improves the accuracy of position detection.

[0101] It should be noted that the motion recovery component can make the second transmission end 214 move away from the through hole 114. Under the action of gravity, the transmission member 210 is always in a tension state, so the transmission member 210 can be a transmission rod or a pull rope, and the transmission member 210 can transmit the tension of the rotary arm 244a.

[0102] In some other embodiments, see Figure 7 The motion recovery component includes an elastic member 244b, and two ends of the elastic member 244b are respectively connected to the first telescopic arm 110 and the transmission member 210.

[0103] It is understandable that the elastic member 244b can be a spring, a rubber belt, etc., which can apply a certain force to the transmission member 210 so that the transmission member 210 has a tendency to move, that is, the connecting rod 222 slides from the end away from the vehicle body in the through hole 114 to the end close to the vehicle body.

[0104] It should be noted that the elastic member 244 b can be connected to any position between the first transmission end 212 and the second transmission end 214 .

[0105] In other embodiments, the elastic member 244 b may be connected to the toggle member 220 .

[0106] In some other embodiments, the elastic member 244b may also be connected to the rotary arm 244a.

[0107] It should be noted that when the motion recovery component includes the elastic member 244b, the transmission member 210 is a transmission rod, and the transmission rod can transmit the elastic force of the elastic member 244b.

[0108] In order to improve the position accuracy of the transmission member 210 and the second sensing element 140 , it is necessary to improve the stability of the transmission member 210 when sliding.

[0109] In some embodiments, the toggle assembly 200 further includes a sliding positioning member, which is connected to the first transmission end 212. The sliding positioning member is located in the first inner cavity 102, and the toggle member 220 is located in the second inner cavity 112. The sliding positioning member and the toggle member 220 are located on both sides of the through hole 114, which can clamp and position the side wall of the first telescopic arm 110, thereby improving the stability of the transmission member 210 when sliding.

[0110] In other embodiments, the toggle assembly 200 further includes at least two positioning members 250, the positioning members 250 are connected to the first telescopic arm 110, and the plurality of positioning members 250 are arranged along a straight line. A slide groove is formed on the positioning member 250, and the transmission member 210 is slidably connected to the slide groove.

[0111] When the transmission member 210 moves in the slide groove, it is constrained by the plurality of positioning members 250 and can run smoothly, thereby improving the accuracy of position detection.

[0112] In other embodiments, a groove or a slide rail is formed on the outer side wall of the first telescopic arm 110, and the transmission member 210 is slidably connected to the groove or the slide rail.

[0113] The working machine provided according to the embodiment of the second aspect of the present invention comprises the leg extension and retracting device provided according to the embodiment of the first aspect of the present invention.

[0114] The first sensing element 130 is disposed in the first inner cavity 102 and connected to the cavity wall of the first inner cavity 102. The second sensing element 140 is connected to the first telescopic arm 110 and the second telescopic arm 120 through the toggle assembly 200. Under the telescopic movement of the first telescopic arm 110 and the second telescopic arm 120, the first sensing element 130 and the second sensing element 140 can be switched between the recognition position and the non-recognition position.

[0115] At the identification position, the first telescopic arm 110 and the second telescopic arm 120 are both at a predetermined extension distance, and the first sensing element 130 corresponds to the second sensing element 140. At this time, the first sensing element 130 or the second sensing element 140 generates a sensing signal, and the operator can confirm that the first telescopic arm 110 and the second telescopic arm 120 are deployed in place at the same time according to the sensing signal.

[0116] In the non-identification position, the first sensing element 130 and the second sensing element 140 are offset from each other, and the first sensing element 130 or the second sensing element 140 does not generate a sensing signal, whereby the operator confirms that the first telescopic arm 110 and the second telescopic arm 120 are not fully deployed and need to be further extended.

[0117] It should be noted that the toggle assembly 200 is transmission-connected to the first telescopic arm 110 and the second telescopic arm 120, and is simultaneously acted upon by the first telescopic arm 110 and the second telescopic arm 120, and only when the first telescopic arm 110 and the second telescopic arm 120 are simultaneously unfolded into place, will the second sensing element 140 be driven to contact the first sensing element 130.

[0118] According to the method for using the leg extension and retraction device provided in the third embodiment of the present invention, please refer to Figure 8 ,include:

[0119] S300, continuously unfolding the first telescopic arm and the second telescopic arm.

[0120] S310: When receiving a sensing signal generated by the cooperation of the first sensing element and the second sensing element, stop unfolding the first telescopic arm and the second telescopic arm.

[0121] It can be understood that one of the first sensing element 130 and the second sensing element 140 is a sensor, and the other is a sensing block. When they are in contact or close to each other, an induction signal will be generated. Therefore, it is possible to determine whether the first telescopic arm 110 and the second telescopic arm 120 are fully extended according to the presence or absence of the induction signal.

[0122] The first telescopic arm 110 and the second telescopic arm 120 can be extended manually by an operator, or can be extended by electric, pneumatic, and hydraulic drive devices, such as electric slides, drive cylinders, and hydraulic cylinders.

[0123] The control system is signal-connected to the first sensing element 130 and / or the second sensing element 140 and the drive device. When the control system does not receive the induction signal, it controls the first telescopic arm 110 and the second telescopic arm 120 to continue to extend. When the control system receives the induction signal, it controls the first telescopic arm 110 and the second telescopic arm 120 to stop extending.

[0124] According to the usage method of the outrigger telescopic device provided by the embodiment of the present invention, the first telescopic arm 110 and the second telescopic arm 120 can also be controlled to extend in a semi-automatic form.

[0125] In some embodiments, the outrigger telescopic device further includes a prompting component, and the prompting component includes but is not limited to a display screen, a speaker, or an indicator light, etc.

[0126] In some embodiments, when receiving the induction signal generated by the cooperation of the first sensing element and the second sensing element, the following steps are further included:

[0127] S312, issue a prompt message.

[0128] It can be understood that when the first telescopic arm 110 and the second telescopic arm 120 are fully extended, the prompting component issues a prompt message, such as a text message, a sound message, or a light message, etc.

[0129] When the prompt message is a text message, content such as "fully extended" and "stop extending" can be displayed.

[0130] When the prompt message is a sound message, text voice can be emitted, or warning voice can also be emitted.

[0131] When the prompt message is a light message, green or red lights can be displayed.

[0132] After receiving the signal from the prompting component, the operator can manually control the first telescopic arm 110 and the second telescopic arm 120 to continue to extend or stop extending.

[0133] It should be noted that when the sensing signal generated by the cooperation of the first sensing element 130 and the second sensing element 140 is not received, other prompt information can also be issued, and the content of the prompt information needs to be different, for example, a green light is displayed when it is not fully deployed, and a red light is displayed when it is fully deployed.

[0134] In summary, the leg extension device, operating machine and use method provided according to the embodiment of the present invention include a base 100, a first telescopic arm 110, a second telescopic arm 120, a first sensing element 130 and a second sensing element 140; a first inner cavity 102 is formed in the base 100, the first telescopic arm 110 is pulled and connected to the first inner cavity 102, a second inner cavity 112 is formed inside the first telescopic arm 110, and the second telescopic arm 120 is pulled and connected to the second inner cavity 112; the first sensing element 130 is connected to the cavity wall of the first inner cavity 102, and the second sensing element 140 is connected to the first telescopic arm 110 and the second telescopic arm 120 through the toggle assembly 200, and the second sensing element 140 can be switched between the identification position and the non-identification position. In the identification position, the first telescopic arm 110 and the second telescopic arm 120 are both at a predetermined extension distance, at which time the first sensing element 130 corresponds to the second sensing element 140, and the first sensing element 130 or the second sensing element 140 generates a sensing signal to remind the operator that the legs are fully extended. In the non-identification position, the first sensing element 130 and the second sensing element 140 are staggered, the first telescopic arm 110 and the second telescopic arm 120 are not fully extended, and no sensing signal is generated. The operator can judge whether the leg is in a fully extended state based on this.

[0135] The leg extension and retraction device, operating machine and use method provided in the embodiments of the present invention can solve the problem that the wire sensor is easily damaged and has low reliability during the process of leg extension and retraction, and can also solve the problem that the reflected light of the laser displacement detection device has refraction changes, thereby avoiding inaccurate position detection.

[0136] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A outrigger telescopic device, characterized in that, include: A base body, forming a first inner cavity; A first telescopic arm, connected to the first inner cavity by pulling, and the first telescopic arm forms a second inner cavity; A second telescopic arm, connected to the second inner cavity by pulling; A first sensing element connected to the cavity wall of the first inner cavity; a second sensing element connected to the first telescopic arm and the second telescopic arm via a toggle assembly; The first telescopic arm and the second telescopic arm are suitable for switching the first sensing element and the second sensing element between the identification position and the non-identification position through telescopic movement, and when the first sensing element and the second sensing element are located at the identification position, the first telescopic arm and the second telescopic arm are both at a predetermined extension distance; The telescopic movement of the first telescopic arm is suitable for adjusting a portion of the distance between the second sensing element from the non-identification position to the identification position, and the telescopic movement of the second telescopic arm is suitable for adjusting the remaining portion of the distance between the second sensing element from the non-identification position to the identification position; The side wall of the first telescopic arm is formed with a through hole communicating with the first inner cavity and the second inner cavity, and a protrusion is formed on one side of the second telescopic arm close to the through hole. The toggle assembly includes: A transmission member, formed with a first transmission end and a second transmission end opposite to each other, the transmission member being slidably connected to the first telescopic arm, and the second sensing element being connected to the second transmission end; The toggle member is connected to the first transmission end through a connecting rod, the connecting rod is inserted into the through hole, the toggle member is located in the second inner cavity, and the protrusion is used to drive the toggle member to slide relative to the first telescopic arm.

2. The outrigger telescopic device according to claim 1, characterized in that, The toggle assembly also includes: A motion recovery component is connected to the transmission member and the first telescopic arm, and the motion recovery component is suitable for causing the second transmission end to move in a direction away from the through hole.

3. The outrigger telescoping device according to claim 2, characterized in that, The motion recovery component comprises: The swing arm is rotatably connected to the first telescopic arm through a fixed axis, and the swing arm is formed with a first rotating end and a second rotating end relative to each other. The first rotating end is rotatably connected to the second transmission end, and the second rotating end is connected to the second sensing element. The swing arm is suitable for causing the second transmission end to move in a direction away from the through hole through the action of gravity.

4. The outrigger telescoping device according to claim 3, wherein, The transmission member includes a pull rope or a transmission rod.

5. The outrigger telescopic device according to claim 2, characterized in that, The transmission member is a transmission rod, and the motion recovery component includes: An elastic member, two ends of which are respectively connected to the transmission member and the first telescopic arm.

6. The outrigger telescopic device according to any one of claims 1 to 5, characterized in that, The toggle assembly also includes: At least two positioning members, the positioning members are connected to the first telescopic arm, and a slide groove is formed on the positioning member, and the transmission member is slidably connected to the slide groove.

7. An earthmoving machine, characterized in that, It comprises the leg extension and retracting device according to any one of claims 1 to 6.

8. A method for using the outrigger telescopic device according to any one of claims 1 to 6, characterized in that, include: Continue to unfold the first telescopic arm and the second telescopic arm; When receiving the sensing signal generated by the cooperation of the first sensing element and the second sensing element, the unfolding of the first telescopic arm and the second telescopic arm is terminated.

9. The method for using the outrigger telescopic device according to claim 8, characterized in that, When the sensing signal generated by the cooperation between the first sensing element and the second sensing element is received, the method further includes: Issue a prompt message.

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