A front support leg device

Abstract

The present application discloses a front-supporting leg device, which includes a fixed bracket, a movable bracket, and a leg body; the movable bracket is connected to the fixed bracket by a first elastic structure, and the first elastic structure can push the movable bracket to the ground; the leg body is rotatably connected to the movable bracket, and a second elastic structure is provided between the leg body and the movable bracket, and the second elastic structure can push the leg body to the ground. In the present application, when the leg body is in a retracted state, the leg body rotates close to the movable bracket to reduce the volume of the front-supporting leg device, which is convenient for storage and transportation; when the leg body is in an extended state, the first elastic structure drives the movable bracket to move toward the ground, and at the same time, driven by the first elastic structure, the leg body quickly moves toward the ground by rotating, ensuring that the leg body continuously presses the ground, thereby enhancing the supporting effect of the front-supporting leg device.

Description

Technical Field

[0001] The present application relates to the field of supporting devices, and in particular to a front supporting leg device. Background Art

[0002] Some lifting engineering machinery has certain requirements on the stability of the entire equipment when lifting heavy materials or lifting materials to a height that is too high. In order to prevent the equipment from tipping over and ensure the safety of surrounding objects and personnel, a common solution is to use outriggers to increase the supporting area between the equipment and the ground, reduce the burden on the tires, and improve the vehicle's anti-overturning ability.

[0003] However, due to factors such as the flatness of the site ground and the deformation of the outriggers due to long-term use, it is difficult for the outriggers to always maintain a large contact area with the ground, resulting in a reduction in the supporting function of the outriggers. Utility Model Content

[0004] In order to solve at least one of the above technical problems, the present application provides a front support leg device, and the technical solution adopted is as follows:

[0005] The present application provides a front-supporting leg device, which includes a fixed bracket, a movable bracket, and a leg body; the movable bracket is connected to the fixed bracket via a first elastic structure, and the first elastic structure can push the movable bracket to the ground; the leg body is rotatably connected to the movable bracket, and a second elastic structure is provided between the leg body and the movable bracket, and the second elastic structure can push the leg body to the ground.

[0006] The embodiments of the present application have at least the following beneficial effects: in the present application, when the leg body is in a retracted state, the leg body rotates close to the movable bracket to reduce the volume of the front-supporting leg device, which is convenient for storage and transportation; when the leg body is in an extended state, the first elastic structure drives the movable bracket to move toward the ground. At the same time, driven by the first elastic structure, the leg body quickly moves toward the ground by rotating, ensuring that the leg body continues to press the ground, thereby enhancing the supporting effect of the front-supporting leg device.

[0007] In certain embodiments of the present application, a guide assembly is provided between the fixed bracket and the movable bracket, and the movable bracket moves in a vertical direction along the guide assembly.

[0008] In certain embodiments of the present application, the guide assembly includes a slide rail and a slider that are interlocked with each other, and the slide rail and the slider are respectively arranged on the movable bracket and the fixed bracket, so that the fixed bracket is slidably connected to the movable bracket.

[0009] In some embodiments of the present application, the fixed end of the first elastic structure is disposed on the fixed bracket, and the output end of the first elastic structure is disposed on the movable bracket;

[0010] The fixed end of the second elastic structure is rotatably connected to the movable bracket, and the output end of the second elastic structure is rotatably connected to the leg body.

[0011] In certain embodiments of the present application, a mounting assembly is provided on the movable bracket, and the leg body is rotatably connected to the mounting assembly.

[0012] In some embodiments of the present application, the mounting assembly includes a plurality of mounting plates, each of which is located on two sides of the leg body;

[0013] A positioning assembly is provided on each of the mounting plates, and the positioning assembly is used to position the leg body in a retracted state or an extended state.

[0014] In certain embodiments of the present application, the positioning assembly includes a first leg positioning hole and a second leg positioning hole, and a third leg positioning hole is provided on the leg body;

[0015] When the leg body is in a retracted state, the leg body rotates to dock the third leg positioning hole with the first leg positioning hole. When the leg body is in an extended state, the leg body rotates to dock the third leg positioning hole with the second leg positioning hole.

[0016] In certain embodiments of the present application, the positioning assembly also includes a first pin, and when the leg body is in a retracted state, the first pin can be inserted into the first leg positioning hole and the third leg positioning hole; when the leg body is in an extended state, the first pin can be inserted into the second leg positioning hole and the third leg positioning hole.

[0017] In certain embodiments of the present application, a stopper is provided on the movable bracket, and when the leg body is in a retracted state, the leg body abuts against the stopper.

[0018] In certain embodiments of the present application, a first bracket positioning hole is provided on the block, a second bracket positioning hole and a third bracket positioning hole are provided on the fixed bracket, and the front support leg device also includes a second latch, which is inserted into the first bracket positioning hole and the second bracket positioning hole to place the movable bracket in a high position, and the second latch is inserted into the first bracket positioning hole and the third bracket positioning hole to place the movable bracket in a low position.

[0019] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 It is a structural schematic diagram of the front support leg device of the present application;

[0022] Figure 2 It is a structural schematic diagram of a fixed bracket and a movable bracket in the front support leg device of the present application;

[0023] Figure 3 It is a structural schematic diagram of the guide assembly in the front support leg device of the present application;

[0024] Figure 4 It is a bottom view of the outrigger body in the front-supporting outrigger device of the present application.

[0025] Reference numerals:

[0026] Fixed bracket 101; movable bracket 102; first elastic structure 103; slide rail 104; slider 105;

[0027] Leg body 201; second elastic structure 202; universal wheel 203;

[0028] Mounting plate 301; first leg positioning hole 302; second leg positioning hole 303; first latch 304;

[0029] Block 401 ; third bracket positioning hole 402 ; second latch 403 . DETAILED DESCRIPTION

[0030] This section will combine Figures 1 to 4 Embodiments of the present application are described in detail, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0031] In the description of the present application, it should be understood that if the terms "center", "middle", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like are used to indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. The features defined as "first" and "second" are used to distinguish the feature names, rather than having special meanings. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, "multiple" means two or more.

[0032] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] like Figure 1 As shown, the embodiment of the present application provides a front-supporting leg device, which includes a fixed bracket 101, a movable bracket 102 and a leg body 201. Several front-supporting leg devices can be arranged in parallel on the relevant equipment.

[0034] The movable bracket 102 is connected to the fixed bracket 101, and the leg body 201 is connected to the movable bracket 102. The movable bracket 102 can move vertically on the fixed bracket 101, so that the movable bracket 102 can switch between a high position and a low position. The leg body 201 can rotate on the movable bracket 102 to switch the leg body 201 between a retracted state and an extended state.

[0035] When the front-supporting leg device is stored or transported, the leg body 201 is initially moved away from the ground by rotating, and the overall volume of the front-supporting leg device is reduced, which provides convenience for storage or transportation. At the same time, the movable bracket 102 moves to a high position, thereby driving the height of the leg body 201 to be raised, so that the leg body 201 is further away from the ground.

[0036] When the front-supporting leg device is working, the movable bracket 102 moves to a low position, driving the height of the leg body 201 to drop, so that the leg body 201 is initially close to the ground. At the same time, the leg body 201 is further close to the ground by rotating, and the first elastic structure 103 and the second elastic structure 202 on the front-supporting leg device provide the leg body 201 with a force to move toward the ground, ensuring that the leg body 201 is in close contact with the ground, providing reliable support for the equipment carrying the front-supporting leg device, thereby improving the anti-overturning ability.

[0037] In some examples, the fixing bracket 101 is substantially formed in a plate shape, and the fixing bracket 101 is fixedly connected to a side wall of a related device, so that the position of the fixing bracket 101 in the vertical direction is approximately constant.

[0038] like Figure 3 As shown, the movable bracket 102 is connected to the fixed bracket 101 through the first elastic structure 103. When the front support leg device is stored or transported, the movable bracket 102 moves to a high position, compresses the first elastic structure 103, and reduces the length of the first elastic structure 103; when the front support leg device is working, the first elastic structure 103 gradually restores the length in the natural state, thereby pushing the movable bracket 102 to move to a low position, so that the movable bracket 102 gradually approaches the ground.

[0039] In some examples, the first elastic structure 103 uses a gas spring, the fixed end of the first elastic structure 103 is connected to the fixed bracket 101, and the output end of the first elastic structure 103 is connected to the movable bracket 102. In order to enable the first elastic structure 103 to assist the movable bracket 102 to move to a low position, the height of the fixed end of the first elastic structure 103 is greater than the height of the output end of the first elastic structure 103, that is, the output end of the first elastic structure 103 faces the ground.

[0040] In some examples, to ensure that the movable bracket 102 moves vertically relative to the fixed bracket 101, a guide assembly is provided between the fixed bracket 101 and the movable bracket 102, and the guide assembly is provided in the vertical direction. The movable bracket 102 moves vertically along the guide assembly, thereby approaching or moving away from the ground.

[0041] In some examples, the guide assembly includes a slide rail 104 and a slider 105 , and the slide rail 104 and the slider 105 can slide relative to each other, and the slide rail 104 and the slider 105 are interlocked with each other to avoid separation between the two.

[0042] Furthermore, the positions of the slider 105 and the slide rail 104 can be adjusted adaptively. The slider 105 is arranged on the fixed bracket 101, and the slide rail 104 is arranged on the movable bracket 102; or the slider 105 is arranged on the movable bracket 102, and the slide rail 104 is arranged on the fixed bracket 101.

[0043] Specifically, a recessed portion is provided on the slider 105, and the slide rail 104 is embedded in the recessed portion to form a mutually interlocking sliding connection; or a recessed portion is provided on the slide rail 104, and the slider 105 is embedded in the recessed portion to form a mutually interlocking sliding connection.

[0044] The leg body 201 is rotatably connected to the movable bracket 102 , and the position where the leg body 201 is connected to the movable bracket 102 is at the bottom of the movable bracket 102 . In addition, a second elastic structure 202 is provided between the leg body 201 and the movable bracket 102 .

[0045] When the front-supporting leg device is stored or transported, the leg body 201 is moved away from the ground by rotation, and at the same time, the leg body 201 is close to the movable bracket 102, that is, the leg body 201 is in a retracted state. In this process, the second elastic structure 202 is compressed, so that the length of the second elastic structure 202 is reduced. When the front-supporting leg device is working, the second elastic structure 202 gradually restores the length of the natural state, thereby pushing the leg body 201 to rotate. In this process, the leg body 201 is away from the movable bracket 102, and at the same time, the leg body 201 gradually approaches the ground, that is, the leg body 201 is in an extended state.

[0046] It can be understood that the first elastic structure 103 initially pushes the leg body 201 toward the ground by driving the movable bracket 102 to move, and the second elastic structure 202 further pushes the leg body 201 toward the ground by driving the leg body 201 to rotate. If the leg body 201 is separated from the ground, the elastic force of the first elastic structure 103 and the second elastic structure 202 needs to be overcome to ensure that the leg body 201 is maintained in a position close to the ground.

[0047] In some examples, the second elastic structure 202 is a gas spring, the fixed end of the second elastic structure 202 is connected to the movable bracket 102, and the output end of the second elastic structure 202 is connected to the leg body 201. In order for the second elastic structure 202 to assist the leg body 201 in rotating to the extended state, the output end of the second elastic structure 202 faces the ground.

[0048] It can be understood that the change in the length of the second elastic structure 202 will cause a corresponding change in the inclination angle of the second elastic structure 202. In order to ensure the connection stability between the leg body 201 and the second elastic structure 202, the output end of the second elastic structure 202 is rotatably connected to the leg body 201; at the same time, in order to ensure the connection stability between the movable bracket 102 and the second elastic structure 202, the fixed end of the second elastic structure 202 is rotatably connected to the movable bracket 102.

[0049] like Figure 4 As shown, a universal wheel 203 is provided at the bottom of the leg body 201. When the leg body 201 is in an extended state, the leg body 201 contacts the ground through the universal wheel 203, which facilitates the front-supporting leg device to move on the ground and improves versatility.

[0050] In some examples, a mounting assembly is disposed on the movable bracket 102 , and the mounting assembly is rotatably connected to the leg body 201 , thereby realizing a rotatable connection between the movable bracket 102 and the leg body 201 .

[0051] like Figure 2 As shown, in some examples, the mounting assembly includes a plurality of mounting plates 301, specifically, two mounting plates 301 are provided, and the two mounting plates 301 are respectively located on opposite sides of the leg body 201. It can be understood that the leg body 201 is rotatably connected to the two mounting plates 301 respectively.

[0052] Furthermore, a positioning assembly is provided on the mounting plate 301, and the positioning assembly can position the leg body 201 in a retracted state or an extended state. When the leg body 201 is positioned in the retracted state, the second elastic structure 202 remains in a compressed state; when the leg body 201 is positioned in the extended state, the second elastic structure 202 remains approximately in a natural state.

[0053] In some examples, the positioning assembly includes a first leg positioning hole 302, a second leg positioning hole 303 and a first latch 304, and a third leg positioning hole is provided on the leg body 201. When the leg body 201 is in different states, the third leg positioning hole cooperates with the first leg positioning hole 302 and the second leg positioning hole 303, respectively, so as to position the leg body 201 at different positions.

[0054] Among them, when the leg body 201 is in the retracted state, the third leg positioning hole on the leg body 201 is connected with the first leg positioning hole 302, and the first pin 304 is inserted into the first leg positioning hole 302 and the third leg positioning hole, thereby achieving a positioning effect and preventing the leg body 201 from rotating toward the ground.

[0055] Furthermore, when the leg body 201 is in an extended state, the third leg positioning hole on the leg body 201 is docked with the second leg positioning hole 303, and the first pin 304 is inserted into the second leg positioning hole 303 and the third leg positioning hole, thereby achieving a positioning effect and preventing the leg body 201 from rotating away from the ground.

[0056] It is worth noting that when the second elastic structure 202 can give the leg body 201 a sufficiently large downward pressure, the leg body 201 does not need an additional positioning structure. Therefore, the first latch 304 can be selectively used in conjunction with the leg positioning hole according to actual needs. If the first latch 304 is not used in conjunction with the leg positioning hole, the leg body 201 has a certain floating margin.

[0057] like Figure 2 As shown, in some examples, a stopper 401 is provided on the movable bracket 102, and the stopper 401 defines the limit position of the leg body 201 during the process of the leg body 201 rotating toward the movable bracket 102. It is understandable that when the leg body 201 is in the retracted state, the leg body 201 abuts against the stopper 401.

[0058] In some examples, the stopper 401 is provided with a first bracket positioning hole, the fixed bracket 101 is provided with a second bracket positioning hole and a third bracket positioning hole 402, and the front support leg device further includes a second latch 403. When the movable bracket 102 is in different positions, the first bracket positioning hole cooperates with the second bracket positioning hole and the third bracket positioning hole 402 respectively, so as to position the movable bracket 102 at different positions.

[0059] Specifically, the second latch 403 is inserted into the first bracket positioning hole and the second bracket positioning hole, so that the movable bracket 102 is in a high position; the second latch 403 is inserted into the first bracket positioning hole and the third bracket positioning hole 402, so that the movable bracket 102 is in a low position.

[0060] It is worth noting that when the first elastic structure 103 can give the movable bracket 102 a sufficiently large downward pressure, the movable bracket 102 does not need an additional positioning structure. Therefore, the second latch 403 can be selectively used to match the bracket positioning hole according to actual needs. If the second latch 403 is not used to match the bracket positioning hole, the movable bracket 102 has a certain floating margin.

[0061] In the description of this specification, if the reference terms "one embodiment", "some examples", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" appear, it 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 application. In this specification, the schematic representation of the above terms does 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.

[0062] The above describes the implementation methods of the present application in detail in conjunction with the accompanying drawings, but the present application is not limited to the above implementation methods. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present application.

Claims

1. A front support leg device, characterized in that: include: Fixed bracket; A movable bracket, wherein the movable bracket is connected to the fixed bracket via a first elastic structure, and the first elastic structure is capable of pushing the movable bracket toward the ground; The leg body is rotatably connected to the movable bracket, and a second elastic structure is provided between the leg body and the movable bracket, and the second elastic structure can push the leg body toward the ground.

2. The front support leg device according to claim 1, characterized in that: A guide assembly is provided between the fixed bracket and the movable bracket, and the movable bracket moves in a vertical direction along the guide assembly.

3. The front support leg device according to claim 2, characterized in that: The guide assembly comprises a slide rail and a slider which are interlocked with each other. The slide rail and the slider are respectively arranged on the movable bracket and the fixed bracket so that the fixed bracket is slidably connected with the movable bracket.

4. The front support leg device according to claim 1, characterized in that: The fixed end of the first elastic structure is arranged on the fixed bracket, and the output end of the first elastic structure is arranged on the movable bracket; The fixed end of the second elastic structure is rotatably connected to the movable bracket, and the output end of the second elastic structure is rotatably connected to the leg body.

5. The front support leg device according to claim 1, characterized in that: The movable bracket is provided with a mounting assembly, and the leg body is rotatably connected to the mounting assembly.

6. The front support leg device according to claim 5, characterized in that: The mounting assembly includes a plurality of mounting plates, each of which is located on both sides of the leg body; A positioning assembly is provided on each of the mounting plates, and the positioning assembly is used to position the leg body in a retracted state or an extended state.

7. The front support leg device according to claim 6, characterized in that: The positioning assembly comprises a first leg positioning hole and a second leg positioning hole, and the leg body is provided with a third leg positioning hole; When the leg body is in a retracted state, the leg body rotates to dock the third leg positioning hole with the first leg positioning hole. When the leg body is in an extended state, the leg body rotates to dock the third leg positioning hole with the second leg positioning hole.

8. The front support leg device according to claim 7, characterized in that: The positioning assembly also includes a first latch, which can be inserted into the first leg positioning hole and the third leg positioning hole when the leg body is in a retracted state; when the leg body is in an extended state, the first latch can be inserted into the second leg positioning hole and the third leg positioning hole.

9. The front support leg device according to claim 6, characterized in that: The movable bracket is provided with a stopper, and when the leg body is in a retracted state, the leg body abuts against the stopper.

10. The front support leg device according to claim 9, characterized in that: The block is provided with a first bracket positioning hole, the fixed bracket is provided with a second bracket positioning hole and a third bracket positioning hole, the front support leg device also includes a second latch, the second latch is inserted into the first bracket positioning hole and the second bracket positioning hole to place the movable bracket in a high position, and the second latch is inserted into the first bracket positioning hole and the third bracket positioning hole to place the movable bracket in a low position.

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