Stabilizers and construction machinery

Abstract

The present invention provides a stabilizing device and engineering machinery, wherein the second leg is hinged to the leg box through the first leg, and the leg box is provided with an adjustment slot; the pre-tightening end of the adjustment link extends into the adjustment slot and can slide along the extension direction of the adjustment slot, and the adjustment end of the adjustment link is hinged to the second leg; the first leg drives the second leg and the adjustment link to reciprocate between the unfolded position and the retracted position; the pre-tightening mechanism includes an elastic pre-tightening member and an adjustment component, the elastic pre-tightening member is connected to the pre-tightening end and is used to apply a combined pre-tightening force to the adjustment link, and the adjustment component is used to increase or decrease the combined pre-tightening force of the elastic pre-tightening member, so as to adjust the movement stroke of the adjustment link relative to the adjustment slot through the combined pre-tightening force. The present invention can adjust the action angle and the combination timing of the second leg relative to the first leg, thereby ensuring that the first leg and the second leg are unfolded in place before the second leg contacts the ground, and preventing the stabilizing device from shaking and the leg mechanism from having insufficient span, thereby affecting the safety of the operation.

Description

Technical Field

[0001] The present invention belongs to the technical field of engineering machinery, and in particular relates to a stabilizing device and engineering machinery. Background Art

[0002] As a supporting structure, the stabilizer is widely used in various industries for aerial work, cargo handling and other movable engineering machinery products, such as telescopic forklifts. The stabilizer is operated by a power mechanism, so that the boom can be extended to touch the ground and the engineering machinery can be lifted to obtain greater stability. However, the existing stabilizer usually uses a wire rope as a traction component to pull the boom for synchronous movement, but the traction stroke of the boom cannot be adjusted according to the specific working conditions, and the wire rope is prone to wear and breakage during use, and has a short service life. In addition, due to the high flexibility of the wire rope, the boom cannot be limited when the boom is folded, resulting in the boom being easily unfolded due to collision when folded, making the folding stability of the stabilizer poor. Summary of the invention

[0003] The main purpose of the present invention is to provide a stabilizing device and an engineering machine, aiming to solve the technical problems in the prior art that the stabilizing device is unstable in closing and the unfolding stroke cannot be adjusted.

[0004] In order to achieve the above-mentioned objectives, the present invention provides a stabilizing device, which comprises: a leg mechanism, comprising a first leg and a second leg; a leg box, wherein the second leg is hinged to the leg box through the first leg, and the leg box is provided with an adjusting slot; an adjusting connecting rod, wherein the pre-tightening end of the adjusting connecting rod extends into the adjusting slot and can slide along the extension direction of the adjusting slot, and the adjusting end of the adjusting connecting rod is hinged to the second leg; a driving member, which is used to drive the first leg and enable the first leg to drive the second leg and the adjusting connecting rod to reciprocate between an expanded position and a retracted position; a pre-tightening mechanism, comprising an elastic pre-tightening member and an adjusting component, wherein the elastic pre-tightening member is connected to the pre-tightening end and is used to apply a combined pre-tightening force to the adjusting connecting rod, and the adjusting component is used to increase or decrease the combined pre-tightening force of the elastic pre-tightening member, so as to adjust the movement stroke of the adjusting connecting rod relative to the adjusting slot through the combined pre-tightening force.

[0005] In an embodiment of the present invention, the second leg includes: a leg arm, a first end of the leg arm and the adjustment end are hinged; a foot plate, a second end of the leg arm and the foot plate are hinged, the first leg is hinged to the leg arm through a hinge, the length of the leg arm is greater than the length of the first leg, and the hinge is located between the first end of the leg arm and the second end of the leg arm.

[0006] In an embodiment of the present invention, the top of the foot plate and the second end of the leg arm are hinged, a supporting surface is provided at the bottom of the foot plate, the cross-sectional size of the foot plate gradually increases from the top to the bottom, and a foot guide plate is provided on the first leg for abutting the foot plate and making the supporting surface rotate from a horizontal position to a vertical position under the reaction force of the foot guide plate.

[0007] In an embodiment of the present invention, the leg box is provided with a foot limiting plate, which is arranged close to the bottom of the leg box and is used to limit the supporting surface to a vertical position.

[0008] In an embodiment of the present invention, the leg box is provided with an installation cavity, the side wall of the installation cavity is provided with the adjustment groove, the pre-tightening end is provided with a sliding pin, the sliding pin passes through the installation cavity and extends into the adjustment groove, and the pre-tightening mechanism is accommodated in the installation cavity and connected to the sliding pin.

[0009] In an embodiment of the present invention, an adjustment zone is provided at one end of the adjustment slot away from the second leg, and a cross-sectional dimension of the adjustment zone is larger than a cross-sectional dimension of the sliding pin shaft.

[0010] In an embodiment of the present invention, the preload mechanism further includes a connecting plate and an adjusting shaft, the two ends of the connecting plate are respectively sleeved outside the sliding pin shaft and the adjusting shaft, the adjusting shaft can rotate around its own axis relative to the connecting plate, and the elastic preload member is used to apply a combined preload force to the sliding pin shaft through the adjusting shaft.

[0011] In an embodiment of the present invention, the adjustment assembly includes: a guide seat, which is installed on the leg box and passed through the elastic preload; a guide sleeve, which is arranged at both ends of the elastic preload and is spaced relative to the guide seat, and the guide sleeve is sleeved outside the elastic preload; an adjusting screw, which is passed through the elastic preload, and the adjusting screw passes through the guide seat and is connected to the adjusting shaft; an adjusting bolt, which is threadedly connected to the adjusting screw, and the guide sleeve is located between the adjusting bolt and the guide seat, and the adjusting bolt is used to drive the guide sleeve to compress the elastic preload toward the guide seat.

[0012] In an embodiment of the present invention, the stabilizing device also includes: a positioning component, including a first detection plate and a second detection plate arranged on the first leg; a detection component, including an expansion detector and a contraction detector arranged on the leg box; a controller, the expansion detector is used to send expansion position information to the controller when the first detection plate is detected, and the contraction detector is used to send contraction position information to the controller when the second detection plate is detected, and the controller is used to shut down the driving member according to the expansion position information and the contraction position information.

[0013] In the embodiment of the present invention, the first leg is provided with a first combined bump block, and the second leg is provided with a second combined bump block, and the first combined bump block is used to cooperate with the second combined bump block in a booth position.

[0014] The present invention also provides an engineering machine, comprising the stabilizing device as described above in the claims.

[0015] Through the above technical solution, the stabilizing device provided by the embodiment of the present invention has the following beneficial effects:

[0016] By adjusting the preload end of the connecting rod to be connected with the elastic preload part and extending into the adjustment slot, the second leg and the adjusting connecting rod are hinged, and the combination preload force of the elastic preload part can be increased or decreased by the adjusting component, the deployment trajectory of the second leg can be adjusted, and the action angle and combination timing of the second leg relative to the first leg can be adjusted, so as to ensure that the first leg and the second leg are deployed in place before the second leg contacts the ground, and prevent the stabilizing device from shaking and the leg mechanism from having insufficient span, which affects the safety of the operation. In addition, the elastic preload part and the adjusting connecting rod can cooperate with the leg mechanism, and while ensuring the service life of the adjusting connecting rod, the contraction stability of the first leg and the second leg can also be improved, and the unstable closing of the first leg and the second leg can be avoided.

[0017] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide an understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 is a schematic structural diagram of a stabilizing device according to an embodiment of the present invention;

[0020] Figure 2 is a schematic structural diagram of a stabilizing device in a state according to another embodiment of the present invention;

[0021] Figure 3 is a schematic structural diagram of a stabilizing device in another state according to another embodiment of the present invention;

[0022] Figure 4 is a schematic structural diagram of a stabilizing device in another state according to another embodiment of the present invention;

[0023] Figure 5 is a schematic diagram of the structure of the outrigger box of a stabilizing device according to an embodiment of the present invention;

[0024] Figure 6 is a partial structural schematic diagram of a stabilizing device according to another embodiment of the present invention;

[0025] Figure 7 is a schematic diagram of the structure of an adjusting slide groove of a stabilizing device according to an embodiment of the present invention;

[0026] Figure 8 2 is a schematic diagram of the structure of an adjusting slide groove of a stabilizing device according to another embodiment of the present invention.

[0027] Description of Reference Numerals

[0028] Label Name Label Name

[0029] 100 Stabilizer 41 Sliding pin

[0030] 1 Leg mechanism 5 Driving parts

[0031] 11 First leg 6 preload mechanism

[0032] 111 Foot guide plate 61 Elastic preload

[0033] 112 first detection board 62 adjustment component

[0034] 113 second detection plate 621 guide seat

[0035] 114 first combination collision block 622 guide sleeve

[0036] 12 Second leg 623 Adjusting screw

[0037] 121 Outrigger arm 624 Adjusting bolt

[0038] 1211 second combination block 63 connecting plate

[0039] 122 Foot plate 64 Adjustment shaft

[0040] 123 Support surface 65 Adjustment rod

[0041] 3 Outrigger box 66 Guide cylinder

[0042] 31 Adjustment slide 7 Detection component

[0043] 311 Adjustment area 71 Expand detector

[0044] 32 Foot stop plate 72 Shrinkage detector

[0045] 33 Mounting cavity 8 Hinged part

[0046] 4 Adjusting connecting rod DETAILED DESCRIPTION

[0047] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0048] The stabilizing device according to the present invention will be described below with reference to the accompanying drawings.

[0049] like Figures 1 to 4 As shown, in the embodiment of the present invention, the stabilizing device 100 includes a leg mechanism 1, a leg box 3, an adjusting link 4, a driving member 5 and a pre-tightening mechanism 6: the leg mechanism 1 includes a first leg 11 and a second leg 12; the second leg 12 is hinged to the leg box 3 through the first leg 11, and the leg box 3 is provided with an adjusting slot 31; the pre-tightening end of the adjusting link 4 extends into the adjusting slot 31 and can slide along the extending direction of the adjusting slot 31, and the adjusting end of the adjusting link 4 is hinged to the second leg 12; the driving member 5 is provided with a pre-tightening mechanism 6. The movable member 5 is used to drive the first leg 11, and the first leg 11 drives the second leg 12 and the adjusting link 4 to reciprocate between the expanded position and the retracted position; the preload mechanism 6 includes an elastic preload member 61 and an adjusting assembly 62, the elastic preload member 61 is connected to the preload end and is used to apply a combined preload force to the adjusting link 4, and the adjusting assembly 62 is used to increase or decrease the combined preload force of the elastic preload member 61, so as to adjust the movement stroke of the adjusting link 4 relative to the adjusting slot 31 through the combined preload force.

[0050] It can be understood that the stabilizing device 100 in this embodiment is mainly used in engineering machinery such as telescopic forklifts, and the left and right sides of the leg box 3 are hinged with leg mechanisms 1, and the two leg mechanisms 1 are arranged in mirror symmetry with respect to the central axis of the leg box 3. The elastic preload member 61 can adopt the adjustment spring in the prior art, and can apply elastic pressure or elastic tensile force to the adjustment connecting rod 4 as a preload force. The driving member 5 can adopt the hydraulic cylinder in the prior art, and the cylinder body of the hydraulic cylinder can be hinged to the leg box 3 through a pin shaft, and the piston rod of the hydraulic cylinder and the second leg 12 can be hinged through a pin shaft. The first leg 11 can be hinged to the leg box 3 through a pin shaft, and the first leg 11 and the second leg 12 can be hinged through a pin shaft.

[0051] When the stabilizing device 100 in this embodiment is used, when the stabilizing device 100 is not needed for supporting operations, the first leg 11 and the second leg 12 are in a retracted position relative to the leg box 3, the first leg 11 is folded in the leg box 3, and the second leg 12 is folded in the first leg 11. At this time, the elastic preload member 61 applies a combined preload force to the second leg 12 by adjusting the connecting rod 4, so that the second leg 12 is closely attached to the first leg 11 under the action of the combined preload force; when the stabilizing device 100 is needed for supporting operations, the combined preload force of the elastic preload member 61 can be increased or decreased by adjusting the component 62 according to the actual construction conditions, so that the elastic preload member 61 can be adjusted according to the actual construction conditions. The preload member 61 applies a combined preload force to the second leg 12 through the adjusting link 4. There is an adjusting slot 31 on the leg box 3. The preload end of the adjusting link 4 can slide in the slot, so that the adjusting link 4 can be in different positions in the adjusting slot 31 under the action of the combined preload force. The different positions of the adjusting link 4 in the adjusting slot 31 can control the combined angle between the second leg 12 and the first leg 11. The driving member 5 pushes the first leg 11 to rotate outward relative to the leg box 3, so that the second leg 12 deflects outward under the action of the combined preload force and the driving member 5, thereby adjusting the action angle and the combination timing of the first leg 11 and the second leg 12.

[0052] As the driving member 5 continues to drive the first leg 11 outward, the first leg 11 and the second leg 12 enter a combined state. At this time, the second leg 12 is still a certain distance from the ground. When the driving member 5 continues to drive the first leg 11 outward, the second leg 12 contacts the ground. The driving of the driving member 5 is completed, and the span of the leg mechanism 1 reaches the maximum, ensuring that the first leg 11 and the second leg 12 reach the deployed state before the second leg 12 touches the ground. In the overall motion state, the adjusting link 4 only bears the component force in the gravity direction of the second leg 12, and is not subject to the thrust of the driving member 5, which can avoid the situation where the adjusting link 4 is broken due to insufficient strength, thereby improving the service life and stability of the adjusting link 4.

[0053] In addition, by adjusting the movement trajectory and movement stroke of the second leg 12 using the adjusting link 4 and the preload mechanism 6, one driving component 5 can be used to drive the two-stage leg extension and retraction movement. At the same time, the fully retracted state has a compact size, and the fully extended state has a large span of the leg mechanism 1. The single driving component 5 realizes the two-stage leg movement, which saves the use of hydraulic components, reduces costs, and also improves the reliability, movement speed and working efficiency of the stabilizing device 100.

[0054] In this embodiment, the pre-tightening end of the adjusting connecting rod 4 is connected to the elastic pre-tightening member 61 and extends into the adjusting slot 31, and the second leg 12 and the adjusting connecting rod 4 are hinged. The combining pre-tightening force of the elastic pre-tightening member 61 can be increased or decreased by the adjusting component 62, and the deployment trajectory of the second leg 12 can be adjusted. The action angle and engagement timing of the second leg 12 relative to the first leg 11 are adjusted, thereby ensuring that the first leg 11 and the second leg 12 are fully deployed before the second leg 12 contacts the ground, preventing the stabilizing device 100 from shaking and the leg mechanism 1 from having insufficient span, thereby affecting the safety of the operation.

[0055] In addition, the elastic preload member 61 and the adjusting link 4 can cooperate with the leg mechanism 1 to ensure the service life of the adjusting link 4 while improving the contraction stability of the first leg 11 and the second leg 12, thereby avoiding the unstable closing of the first leg 11 and the second leg 12.

[0056] like Figure 1 and Figure 2 As shown, the second leg 12 includes a leg arm 121 and a foot plate 122, the first end of the leg arm 121 is hinged to the adjustment end; the second end of the leg arm 121 is hinged to the foot plate 122, the first leg 11 is hinged to the leg arm 121 through a hinge 8, the length of the leg arm 121 is greater than the length of the first leg 11, and the hinge 8 is located between the first end of the leg arm 121 and the second end of the leg arm 121. It can be understood that the top of the foot plate 122 can be hinged to the leg arm 121 through a pin.

[0057] In this embodiment, the leg arm 121 is longer than the first leg 11, so that sufficient installation space can be provided for the hinge 8 on the basis of ensuring the span of the leg mechanism 1, so that the hinge point between the adjustment link 4 and the second leg 12 can be away from the hinge 8 between the first leg 11 and the second leg 12. By increasing the torque, the force on the adjustment link 4 can be reduced and the deployment speed of the second leg 12 can be increased. When the first leg 11 and the second leg 12 are in the retracted position, the leg mechanism 1 is in a fully retracted state, and the first leg 11 and the second leg 12 are folded together. At this time, the vehicle is in a movable state, and the distance between the two leg mechanisms 1 does not exceed the width of the entire vehicle, which does not affect the trafficability.

[0058] like Figure 3 and Figure 4 As shown, in the embodiment of the present invention, the top of the foot plate 122 and the second end of the leg arm 121 are hinged, and a supporting surface 123 is provided at the bottom of the foot plate 122. The cross-sectional size of the foot plate 122 gradually increases from the top to the bottom. A foot guide plate 111 is provided on the first leg 11 for abutting the foot plate 122 and allowing the supporting surface 123 to rotate from a horizontal position to a vertical position under the reaction force of the foot guide plate 111.

[0059] The foot guide plate 111 in this embodiment forms an arc-shaped guiding structure by changing its height, so that when the second leg 12 moves to the retracted position, the foot plate 122 is rotated from a horizontal position to a vertical position under the action of the foot guide plate 111. After the first leg 11 and the second leg 12 are retracted into place, it can be ensured that the foot plate 122 is placed on the side of the leg box 3, and the supporting surface 123 with the maximum width is in a vertical position, which can prevent the foot plate 122 from increasing the width of the entire vehicle and affecting the passability of the entire vehicle.

[0060] Specifically, the leg box 3 is provided with a leg limiting plate 32, which is arranged near the bottom of the leg box 3 and is used to limit the support surface 123 to a vertical position. Figure 2 As shown, the foot guide plate 111 and the foot plate 122 are guided and matched, as shown in FIG. Figure 3 As shown, the leg limiting plate and the foot plate 122 are limited in cooperation, and at this time the foot guide plate 111 is located above the foot limiting plate 32, so that during the contraction of the leg mechanism 1, the relative angle between the first leg 11 and the second leg 12 is reduced under the control of the adjusting link 4, the leg mechanism 1 deflects toward the leg box 3, and at the same time the foot plate 122 is turned from a horizontal state to a lateral state, and the foot plate 122 guide plate causes the foot plate 122 to slide sideways along the foot plate 122 guide plate, and finally the foot plate 122 is supported by the foot limiting plate 32 and is in a vertical state, thereby avoiding the shaking of the foot plate 122, so that the first leg 11, the second leg 12 and the leg box 3 can be kept in the most compact state, avoiding the situation that affects the width and passability of the entire vehicle, and further ensuring the stability of the leg contraction.

[0061] The two leg mechanisms 1 are arranged opposite to each other along the left-right direction, and the left-right direction is the width direction of the stabilizing device 100, and the up-down direction is the height direction of the stabilizing device 100. The leg limit plate 32 and the leg guide plate 111 are both arranged in an arc shape, and the curvature of the leg limit plate 32 inherits the curvature of the leg guide plate 111, and are arranged alternately. The leg limit plate 32 is located between the first leg 11 and the second leg 12, which can improve the compactness of the leg mechanism 1 along the thickness direction.

[0062] like Figure 5 and Figure 6 As shown, the leg box 3 is provided with a mounting cavity 33, the side wall of the mounting cavity 33 is provided with an adjustment slot 31, the pre-tightening end is provided with a sliding pin 41, the sliding pin 41 passes through the mounting cavity 33 and extends into the adjustment slot 31, and the pre-tightening mechanism 6 is accommodated in the mounting cavity 33 and connected with the sliding pin 41. In this embodiment, the sliding pin 41 passes through the mounting cavity 33 and extends into the adjustment slot 31, which can improve the compactness of the connection between the adjustment link 4 and the leg box 3, and at the same time, it can prevent the sliding pin 41 from being accidentally touched by external components, thereby improving the reliability of the stabilizing device 100.

[0063] In the embodiment of the present invention, an adjustment area 311 is provided at one end of the adjustment slot 31 away from the second leg 12, and the cross-sectional dimension of the adjustment area 311 is larger than the cross-sectional dimension of the sliding pin 41. The adjustment slot 31 can move the sliding pin 41 along a prescribed trajectory to limit the movement of the adjustment link 4, and the adjustment link 4 is connected to the second leg 12, thereby controlling the movement of the second leg 12. Figure 7 As shown, the adjustment slot 31 is an oblong waist hole, the inner section is a slightly larger diameter, and the outer section is a slightly smaller diameter. The adjustment area 311 on the larger side can adjust and balance the size deviation to balance the problem of the leg not being fully recovered due to processing errors. The leg mechanism 1 can be kept in the maximum folding state after contraction to ensure that the distance between the two leg mechanisms 1 is minimized. In other embodiments, the adjustment slot 31 can be an oblong hole, or other shapes, such as semi-arc, half-moon, rectangle, etc., but the working principle and the purpose to be achieved are the same.

[0064] like Figure 6 As shown, the preload mechanism 6 also includes a connecting plate 63 and an adjusting shaft 64. The two ends of the connecting plate 63 are respectively sleeved on the sliding pin 41 and the adjusting shaft 64. The adjusting shaft 64 can rotate around its own axis relative to the connecting plate 63, and the elastic preload member 61 is used to apply a combined preload force to the sliding pin 41 through the adjusting shaft 64. There are two connecting plates 63, and the two ends of the adjusting shaft 64 are respectively connected to the two connecting plates 63. The adjusting shaft 64 in this embodiment can rotate around its own axis relative to the connecting plate 63, and can provide the adjusting shaft 64 with a rotational freedom, so that the combined preload force of the elastic preload member 61 to the bracket of the adjusting link 4 through the adjusting shaft 64 and the connecting plate 63 has an upward or downward component force, which offsets the up and down direction components between the sliding pin 41 and the adjusting slot 31, thereby reducing the wear between the sliding pin 41 and the adjusting slot 31, and improving the service life of the adjusting link 4.

[0065] like Figure 4 and Figure 6 As shown, the adjustment component 62 includes a guide seat 621, a guide sleeve 622, an adjustment screw 623 and an adjustment bolt 624: the guide seat 621 is installed on the leg box 3 and is inserted into the elastic preload member 61; the guide sleeve 622 and the guide seat 621 are relatively spaced apart at both ends of the elastic preload member 61, and the guide sleeve 622 is sleeved outside the elastic preload member 61; the adjustment screw 623 is inserted into the elastic preload member 61, the adjustment screw 623 passes through the guide seat 621 and is connected to the adjustment shaft 64; the adjustment bolt 624 is threadedly connected to the adjustment screw 623, and the guide sleeve 622 is located between the adjustment bolt 624 and the guide seat 621, and the adjustment bolt 624 is used to drive the guide sleeve 622 to compress the elastic preload member 61 toward the guide seat 621.

[0066] The elastic preload member 61 in this embodiment is a compression spring, and the guide seat 621 and the guide sleeve 622 guide the left and right ends of the elastic preload member 61 respectively, so as to ensure the compression track of the elastic preload member 61, avoid the elastic preload member 61 from deforming upward or downward, ensure that the elastic preload member 61 and the adjusting screw 623 are not subjected to lateral force, and effectively ensure the use effect and service life. Specifically, the combination preload force of the elastic preload member 61 can be adjusted and preloaded by adjusting the bolt 624 and the adjusting screw 623. Thereby, the timing of the engagement of the first leg 11 and the second leg 12 is adjusted, so that the leg mechanism 1 can complete the leg deployment action before it is away from the ground. Avoid the shaking caused by the failure of the first leg 11 and the second leg 12 to fully engage after the foot plate 122 contacts the ground, and the dangerous situation of the leg mechanism 1 having a small span.

[0067] like Figure 3 As shown, in another embodiment, the elastic preload member 61 is a tension spring, and the adjustment assembly 62 includes an adjustment rod 65 and a guide cylinder 66. The adjustment rod 65 and the leg box 3 are threadedly connected. The elastic preload member 61 is located in the guide cylinder 66, one end extends out of the guide cylinder 66 and is connected to the connecting plate 63, and the other end extends out of the guide cylinder 66 and is connected to the adjustment rod 65. The stretching length of the elastic preload member 61 is adjusted by adjusting the extension length of the adjusting rod 65 relative to the adjusting connecting rod 4, thereby increasing or decreasing the combined preload force.

[0068] It should be noted that the stabilizing device 100 also includes a positioning component, a detection component 7 and a controller; the positioning component includes a first detection plate 112 and a second detection plate 113 arranged on the first leg 11; the detection component 7 includes an expansion detector 71 and a contraction detector 72 arranged on the leg box 3; the expansion detector 71 is used to send expansion position information to the controller when the first detection plate 112 is detected, and the contraction detector 72 is used to send contraction position information to the controller when the second detection plate 113 is detected, and the controller is used to shut down the driving member 5 according to the expansion position information and the contraction position information.

[0069] In this embodiment, the current state of the leg mechanism 1 can be determined by the positioning component, the detection component 7 and the controller to prevent misoperation and affect the safety and passability of the vehicle. The detection component 7 is installed in the leg box 3, and the detection harness can be hidden in the installation cavity 33 to prevent the harness from being damaged by external factors and affect the safety of the vehicle. The first detection plate 112 cooperates with the deployment detector 71, so that the deployment detector 71 can detect the first detection plate 112 when the leg mechanism 1 reaches the fully open state, thereby determining that the state is the fully open state of the leg. The second detection plate 113 cooperates with the contraction detector 72, so that the contraction detector 72 can detect the second detection plate 113 when the leg mechanism 1 reaches the fully contracted state, thereby determining that the state is the fully contracted state of the leg. When the leg reaches the specified position, the controller is used to shut down the drive member 5 according to the deployment in place information and the contraction in place information, which can prevent danger caused by the leg not reaching the specified position. In other embodiments, the detection component 7 can be installed on the first leg 11, and the positioning component can be installed on the second leg 12.

[0070] Specifically, the first leg 11 is provided with a first combined bump block 114, and the second leg 12 is provided with a second combined bump block 1211. The first combined bump block 114 is used to limit the cooperation with the second combined bump block 1211 in the unfolded position. When the first leg 11 and the second leg 12 are unfolded and combined, the first combined bump block 114 is combined with the second combined bump block 1211, and the first leg and the second leg are combined at this time. The force transmission can be achieved by combining the first combined bump block 114 with the second combined surface. In addition, the length of the leg arm 121 is greater than the length of the first leg 11, which can make the second combined bump block 1211 on the second leg 12 away from the hinge 8, thereby reducing the pressure between the first combined bump block 114 and the second combined bump block 1211, avoiding the risk of damage to the two structural parts, and thus increasing the stability and safety of the whole vehicle operation.

[0071] The present invention further proposes an engineering machinery, which includes a stabilizing device 100 as described above in the claims. The specific structure of the stabilizing device 100 refers to the above-mentioned embodiment. Since the engineering machinery adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0072] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0073] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0074] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0075] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A stabilizing device, characterized in that: The stabilizing device comprises: A leg mechanism (1) comprising a first leg (11) and a second leg (12); A leg box (3), wherein the second leg (12) is hinged to the leg box (3) via the first leg (11), and the leg box (3) is provided with an adjustment slide groove (31); An adjusting connecting rod (4), wherein the pre-tightening end of the adjusting connecting rod (4) extends into the adjusting sliding groove (31) and can slide along the extension direction of the adjusting sliding groove (31), and the adjusting end of the adjusting connecting rod (4) is hinged to the second supporting leg (12); A driving member (5) for driving the first supporting leg (11) and causing the first supporting leg (11) to drive the second supporting leg (12) and the adjusting connecting rod (4) to reciprocate between an extended position and a retracted position; A preload mechanism (6), comprising an elastic preload member (61) and an adjustment assembly (62), wherein the elastic preload member (61) is connected to the preload end and is used to apply a combined preload force to the adjustment link (4), and the adjustment assembly (62) is used to increase or decrease the combined preload force of the elastic preload member (61), so as to adjust the movement stroke of the adjustment link (4) relative to the adjustment slot (31) by the combined preload force, so that the adjustment link (4) is in different positions in the adjustment slot (31) under the action of the combined preload force, and the different positions of the adjustment link (4) in the adjustment slot (31) can control the combined angle between the second leg (12) and the first leg (11); The second leg (12) comprises: A leg arm (121), wherein the first end of the leg arm (121) and the adjustment end are hingedly connected; A foot plate (122), the second end of the leg arm (121) is hinged to the foot plate (122), the first leg (11) is hinged to the leg arm (121) via a hinge (8), and the hinge (8) is located between the first end of the leg arm (121) and the second end of the leg arm (121).

2. The stabilizing device according to claim 1, characterized in that: The length of the supporting leg arm (121) is greater than the length of the first supporting leg (11).

3. The stabilizing device according to claim 1, characterized in that: The top of the support foot plate (122) is hinged to the second end of the support leg arm (121); a support surface (123) is provided at the bottom of the support foot plate (122); the cross-sectional size of the support foot plate (122) gradually increases from the top to the bottom; a support foot guide plate (111) is provided on the first support leg (11) for abutting against the support foot plate (122) and allowing the support surface (123) to rotate from a horizontal position to a vertical position under the reaction force of the support foot guide plate (111).

4. The stabilizing device according to claim 3, characterized in that: The leg box (3) is provided with a leg limiting plate (32), which is arranged close to the bottom of the leg box (3) and is used to limit the support surface (123) to a vertical position.

5. The stabilizing device according to any one of claims 1 to 4, characterized in that: The leg box (3) is provided with an installation cavity (33), the side wall of the installation cavity (33) is provided with the adjustment slot (31), the pre-tightening end is provided with a sliding pin (41), the sliding pin (41) passes through the installation cavity (33) and extends into the adjustment slot (31), and the pre-tightening mechanism (6) is accommodated in the installation cavity (33) and connected to the sliding pin (41).

6. The stabilizing device according to claim 5, characterized in that: An adjustment area (311) is provided at one end of the adjustment slot (31) away from the second leg (12), and the cross-sectional dimension of the adjustment area (311) is greater than the cross-sectional dimension of the sliding pin shaft (41).

7. The stabilizing device according to claim 5, characterized in that: The preload mechanism (6) further comprises a connecting plate (63) and an adjusting shaft (64), the two ends of the connecting plate (63) being respectively sleeved on the sliding pin shaft (41) and the adjusting shaft (64), the adjusting shaft (64) being capable of rotating around its own axis relative to the connecting plate (63), and the elastic preload member (61) being used for applying a combined preload force to the sliding pin shaft (41) via the adjusting shaft (64).

8. The stabilizing device according to claim 7, characterized in that The adjustment component (62) comprises: A guide seat (621) is installed on the leg box (3) and penetrates into the elastic preload member (61); A guide sleeve (622) is arranged at opposite ends of the elastic preload member (61) with a relative spacing from the guide seat (621), and the guide sleeve (622) is sleeved outside the elastic preload member (61); An adjusting screw (623) is inserted into the elastic preload member (61), and the adjusting screw (623) passes through the guide seat (621) and is connected to the adjusting shaft (64); The adjusting bolt (624) is threadedly connected to the adjusting screw (623), and the guide sleeve (622) is located between the adjusting bolt (624) and the guide seat (621). The adjusting bolt (624) is used to drive the guide sleeve (622) to compress the elastic preload member (61) toward the guide seat (621).

9. The stabilizing device according to any one of claims 1 to 4, characterized in that The stabilizing device (100) further comprises: A positioning assembly, comprising a first detection plate (112) and a second detection plate (113) arranged on the first leg (11); A detection assembly (7), comprising an expansion detector (71) and a contraction detector (72) arranged on the outrigger box (3); The controller is configured to: the expansion detector (71) is configured to send expansion in place information to the controller when the first detection plate (112) is detected; the contraction detector (72) is configured to send contraction in place information to the controller when the second detection plate (113) is detected; and the controller is configured to shut down the driving member (5) according to the expansion in place information and the contraction in place information.

10. The stabilizing device according to any one of claims 1 to 4, characterized in that The first supporting leg (11) is provided with a first combined bumping block (114), and the second supporting leg (12) is provided with a second combined bumping block (1211), and the first combined bumping block (114) is used for limiting the cooperation with the second combined bumping block (1211) at the booth position.

11. An engineering machine, characterized in that: The construction machine comprises the stabilizing device (100) according to any one of claims 1 to 10.

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