A foldable support leg that can be quickly deployed and fixed

Abstract

The application relates to the technical field of device support devices, and discloses a folding support leg capable of being quickly unfolded and fixed, which comprises a mounting pipe, a first support leg, a second support leg and a support foot sole; the first support leg, the second support leg and the support foot sole can be folded and stored in the cavity of the mounting pipe; a third rotating shaft is rotatably arranged on the first support leg; a first connecting piece is threadedly arranged on the third rotating shaft; a fourth rotating shaft is rotatably arranged on the second support leg; a second connecting piece is fixedly arranged on the fourth rotating shaft; the first connecting piece and the second connecting piece can be threadedly locked; and when the first connecting piece and the second connecting piece are locked, the second support leg and the first support leg are locked and cannot be folded and rotated relative to each other. The application can effectively avoid height deviation during the unfolding and mounting process, thereby effectively improving the mounting reliability and stability of the device under the conditions of bumping and rocking, and the connection is reliable, the support is stable, and the operation is simple and convenient.

Description

Technical Field

[0001] This invention belongs to the technical field of equipment support devices, specifically, it relates to a folding support leg that can be quickly unfolded and fixed. Background Technology

[0002] In turbulent and swaying environments, it is sometimes necessary to temporarily set up and quickly support and fix transport trolleys, instruments, and other equipment. For example, on the deck of a ship, when it is necessary to quickly connect and install the parts to be installed at the designated installation position, since the equipment on the deck of a ship is usually in a swaying state, it is necessary to ensure the stability of the equipment and the parts to be installed so as not to tilt or sway on the deck. This requires the device to have a sufficiently large support chassis.

[0003] In existing technologies, screw-type support leg structures are generally used to expand the chassis of the equipment. When deploying such support leg structures, each support leg needs to be manually pulled out and tightened to ensure that the support feet are against the deck. However, height deviations can easily occur between the support legs during the tightening process, which can lead to unreliable installation and poor stability of the equipment on the deck of a ship. Furthermore, tightening the support legs is cumbersome, time-consuming, labor-intensive, and has low installation efficiency. Summary of the Invention

[0004] To address or partially address the problems existing in related technologies, this application provides a foldable support leg that can be quickly deployed and fixed. This foldable support leg aims to solve the problem that existing support leg structures used to support and fix equipment in turbulent and swaying environments such as ship decks are prone to height deviations during deployment, resulting in unreliable installation and poor stability.

[0005] This application provides a folding support leg that can be quickly unfolded and fixed, comprising:

[0006] The mounting tube is a hollow tubular structure that is fixedly installed at the bottom of the equipment that needs to be supported.

[0007] The first support leg is slidably embedded in the mounting tube and can be locked and positioned with the mounting tube.

[0008] The second support leg is rotatably hinged to the end of the first support leg away from the mounting tube via the first pivot.

[0009] The supporting foot is rotatably hinged to the end of the second supporting leg away from the first supporting leg via a second pivot.

[0010] The first support leg, the second support leg, and the support foot can be folded and stored in the cavity of the mounting tube;

[0011] The first support leg is rotatably mounted with a third shaft, and a first connector is threaded onto the third shaft. The second support leg is rotatably mounted with a fourth shaft, and a second connector is fixedly mounted onto the fourth shaft. The first connector and the second connector are locked together by threads, and when the first connector and the second connector are locked together, the second support leg and the first support leg are locked together and cannot be rotated or folded relative to each other.

[0012] In one alternative, the first connector includes a support screw and a lock nut. The support screw passes vertically through the third rotating shaft, is threaded to the third rotating shaft, and extends to the inside of the second support leg. The lock nut is movably mounted on the end of the support screw away from the third rotating shaft via a thread.

[0013] The second connecting component includes a fixing bracket and a fixing nut. The fixing bracket is fixedly installed at both ends of the fourth rotating shaft, and the fixing nut is fixedly installed at the end of the fixing bracket away from the fourth rotating shaft. The fixing nut has a smooth through hole along the axial direction.

[0014] The end of the support screw away from the third pivot can slide through the smooth through hole of the fixing nut. The locking nut and the fixing nut are provided with matching threads. The locking nut and the fixing nut form a pair of tightening nuts. When the locking nut and the fixing nut are tightly connected, the support screw and the fixing nut cannot slide relative to each other. At this time, the first connecting piece and the second connecting piece are locked.

[0015] In one alternative, when the first connector and the second connector are locked together, the line connecting the projections of the first, third, and fourth rotating shafts in the vertical plane forms a triangle.

[0016] In one alternative embodiment, the first support leg includes a mounting part and a connecting part. The mounting part is a tubular structure that matches the mounting tube. The mounting part can be slidably fitted inside the mounting tube and can be locked and positioned with the mounting tube. The connecting part is fixedly embedded in the mounting part and extends beyond the mounting part. A third rotating shaft and a first rotating shaft are rotatably mounted on the upper and lower sides of the end of the connecting part away from the mounting part, respectively.

[0017] The second support leg is wrapped around the outside of the connecting part, and the end of the second support leg away from the supporting foot is hinged to the connecting part through the first pivot.

[0018] In one alternative embodiment, the connecting part of the first support leg is a hollow, top-opening groove structure, and the second support leg is a hollow, bottom-opening groove structure. When the second support leg and the first support leg are folded together, a receiving cavity is formed between the second support leg and the first support leg, and the first connector and the second connector are placed in the receiving cavity.

[0019] In one alternative, the top and side walls of the mounting portion of the first support leg near the end of the second support leg have notches to form a first positioning portion, and the side wall of the second support leg has notches to form a second positioning portion.

[0020] When the second support leg is folded and retracted with the first support leg, the second positioning part and the first positioning part are just locked together. At this time, the top surface of the folded second support leg is coplanar with the top surface of the mounting part, and the outer wall surface of the second support leg is coplanar with the plane of the outer wall surface of the mounting part.

[0021] In one alternative, the top wall of the mounting portion of the first support leg near the position of the first positioning portion has a notch to form a first placement groove;

[0022] The top surface of the second support leg after folding is a flat structure, and the lower ends of the top wall and side walls of the second support leg after folding have notches to form a second placement groove.

[0023] The bottom of the supporting foot is a flat structure, and the bottom surface of the supporting foot is flat when it is unfolded. The supporting foot can rotate around the second pivot and fold together with the second supporting leg.

[0024] When the first support leg, the second support leg, and the support foot are folded together, the first placement slot and the second placement slot are connected, and the support foot is placed in the first placement slot and the second placement slot. At this time, the bottom surface of the support foot when it is unfolded is coplanar with the top surface of the second support leg after it is folded and the top surface of the mounting part of the first support leg. The outer wall surface of the support foot is coplanar with the outer wall surface of the second support leg and the outer wall surface of the mounting part.

[0025] In one alternative, a locking groove is provided on one side wall of the mounting tube along the length direction, and a first screw hole matching the locking groove is provided on the top wall of the mounting part of the first support leg. The mounting part and the mounting tube can be locked and positioned by a locking screw passing through the locking groove and the first screw hole.

[0026] The beneficial effects of this application are:

[0027] This application features a foldable first support leg, a second support leg, and a support foot that can be stored within an installation tube. A first connector and a second connector are used to lock the first and second support legs together, ensuring reliable connection, stable support, and good load-bearing capacity. The first and second connectors are threaded together for easy operation and installation. The locking process of the first and second connectors does not interfere with the position or angle of the first and second support legs, allowing them to be locked after the position and angle have been adjusted. This prevents positional deviations during locking, effectively avoiding height deviations during the unfolding and installation of the foldable support legs. This significantly improves the reliability and stability of the equipment under bumpy and swaying conditions.

[0028] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the overall structure and unfolded state in one embodiment of this application;

[0031] Figure 2 This is a schematic diagram of the overall structure and folded / collapsed state in one embodiment of this application;

[0032] Figure 3 This is a schematic diagram of the unfolded state of the first supporting leg, the second supporting leg, and the supporting foot in one embodiment of this application;

[0033] Figure 4 This is a schematic diagram of the projection of the first, third, and fourth rotating shafts in a vertical plane according to an embodiment of this application;

[0034] Figure 5 This is a schematic diagram showing the installation positions of the first connector and the second connector in one embodiment of this application;

[0035] Figure 6 This is a schematic diagram of the first supporting leg, the second supporting leg, and the supporting foot in a semi-folded state according to an embodiment of this application;

[0036] Figure 7 This is a schematic diagram of the folded and retracted state of the first support leg, the second support leg, and the support foot in one embodiment of this application.

[0037] The following are the reference numerals in the diagram: 1, mounting tube; 101, locking groove;

[0038] 2. First support leg; 21. Mounting part; 22. Connecting part; 200. Receiving cavity; 211. First positioning part; 212. First placement groove; 213. First screw hole;

[0039] 3. Second support leg; 31. Second positioning part; 32. Second placement slot;

[0040] 4. Support the ball of the foot;

[0041] 5. First connecting piece; 51. Support screw; 52. Locking nut;

[0042] 6. Second connecting piece; 61. Fixing bracket; 62. Fixing nut; 620. Smooth through hole;

[0043] 7. First pivot; 8. Second pivot; 9. Third pivot; 10. Fourth pivot; 11. Locking screw. Detailed Implementation

[0044] The specific embodiments of this application will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but are not intended to limit the scope of this application. Similarly, the following examples are only some embodiments of this application, not all embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0045] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0047] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0048] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0049] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0050] Existing support leg structures used to support and fix equipment in turbulent and swaying environments such as ship decks have problems such as unreliable installation and poor stability due to height deviations during deployment, as well as being cumbersome to operate, time-consuming and labor-intensive, and having low installation efficiency.

[0051] To address the aforementioned problems, this application proposes improvements and innovations, including the following embodiments.

[0052] In one implementation, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 7A foldable support leg that can be quickly unfolded and fixed is provided, comprising: a mounting tube 1, which is a hollow tubular structure and is fixedly installed at the bottom of the equipment to be supported; a first support leg 2, which is slidably embedded in the mounting tube 1 and can be locked and positioned with the mounting tube 1; a second support leg 3, which is rotatably hinged to the end of the first support leg 2 away from the mounting tube 1 via a first pivot 7; and a support foot 4, which is rotatably hinged to the end of the second support leg 3 away from the first support leg 2 via a second pivot 8; the first support leg 2, the second support leg 3, and the support foot 4 can be folded and stored in the cavity of the mounting tube 1.

[0053] Thus, the first support leg 2, the second support leg 3, and the support foot 4 are sequentially hinged and installed through the first pivot 7 and the second pivot 8, so that the folding support leg can be used to support the equipment and can also be folded and stored through the mounting tube 1. The operation is simple, the use is convenient, and it is easy to fold and store without affecting the normal use of the equipment in the later stage. When the folding support leg is not in use, the first support leg 2, the second support leg 3, and the support foot 4 are in a folded and stored in the mounting tube 1.

[0054] In this embodiment, a third rotating shaft 9 is rotatably mounted on the first support leg 2, and a first connecting member 5 is threadedly mounted on the third rotating shaft 9. A fourth rotating shaft 10 is rotatably mounted on the second support leg 3, and a second connecting member 6 is fixedly mounted on the fourth rotating shaft 10. The first connecting member 5 and the second connecting member 6 can be locked together by threads, and when the first connecting member 5 and the second connecting member 6 are locked together, the second support leg 3 and the first support leg 2 are locked together and cannot be rotated or folded relative to each other.

[0055] Thus, when it is necessary to unfold and install this folding support leg, firstly, the first support leg 2, the second support leg 3, and the support foot 4 are pulled out from the mounting tube 1. The amount of the first support leg 2 pulled out of the mounting tube 1 is adjusted, the angle between the first support leg 2 and the second support leg 3 is adjusted, and the support foot 4 is made to be close to the deck of the ship. Then, by locking the first connector 5 and the second connector 6 with threads, the connection length of the first connector 5 and the second connector 6 between the first support leg 2 and the second support leg 3 is fixed. This restricts the degree of freedom of rotation of the second support leg 3 and the first support leg 2, so that the second support leg 3 and the first support leg 2 are in a locked state that cannot be rotated or folded relative to each other. Thus, the first support leg 2 and the second support leg 3 form a stable support structure to effectively support the equipment.

[0056] In this embodiment, the locking of the first support leg 2 and the second support leg 3 is achieved by locking the first connector 5 and the second connector 6. The locking process of the first connector 5 and the second connector 6 does not interfere with the position and angle of the first support leg 2 and the second support leg 3. Therefore, the locking of the first support leg 2 and the second support leg 3 can be performed after the position and angle have been adjusted, ensuring that there is no positional deviation during the locking process. This effectively avoids height deviations between the various folding support legs installed at the bottom of the equipment during the unfolding and installation process, thereby effectively improving the installation reliability and stability of the equipment under bumpy and swaying environmental conditions such as on a ship's deck. In this embodiment, the locking connection of the first connector 5 and the second connector 6 is firm and stable, ensuring reliable connection, stable support, and good load-bearing capacity for the first support leg 2 and the second support leg 3. Furthermore, the first connector 5 and the second connector 6 can be locked together by threads, making operation simple and installation convenient.

[0057] This folding support leg supports the equipment by setting up a foldable and unfoldable first support leg 2, second support leg 3, and support foot 4. It can form a sufficiently large support chassis on the deck below the equipment, which can effectively ensure the stability of the equipment and the parts to be installed, and ensure that the equipment does not tilt or sway on the deck. This folding support leg can fully meet the needs of temporary construction and quick support for the installation of transport trolleys, instruments and other equipment in turbulent and swaying environments such as on the deck of a ship.

[0058] In some implementations, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 The first connecting member 5 includes a support screw 51 and a locking nut 52. The support screw 51 is threaded through the third rotating shaft 9 and extends to the inner side of the second support leg 3. The locking nut 52 is movably installed at the end of the support screw 51 away from the third rotating shaft 9 via a thread. The second connecting member 6 includes a fixing bracket 61 and a fixing nut 62. The fixing bracket 61 is fixedly installed at both ends of the fourth rotating shaft 10. The fixing nut 62 is fixedly installed at the end of the fixing bracket 61 away from the fourth rotating shaft 10, and the fixing nut 62 has a smooth through hole 620 in the axial direction. The end of the support screw 51 away from the third rotating shaft 9 can slide through the smooth through hole 620 of the fixing nut 62. The locking nut 52 and the fixing nut 62 are provided with matching threads. The locking nut 52 and the fixing nut 62 form a pair of tightening nuts. When the locking nut 52 and the fixing nut 62 are tightly connected, the support screw 51 and the fixing nut 62 cannot slide relative to each other. At this time, the first connecting member 5 and the second connecting member 6 are locked.

[0059] Thus, by threading the support screw 51 to the third rotating shaft 9, the first connecting piece 5 and the first supporting leg 2 are rotatably connected. By fixing the fixing bracket 61 to both ends of the fourth rotating shaft 10, the second connecting piece 6 and the second supporting leg 3 are rotatably connected. The support screw 51 is slidably inserted into the smooth through hole 620 of the fixing nut 62, causing the connection length between the first connecting piece 5 and the second connecting piece 6 between the third rotating shaft 9 and the fourth rotating shaft 10 to change with the sliding of the support screw 51. This allows the first supporting leg 2 and the second supporting leg 3 to rotate by allowing the support screw 51 to slide within the smooth through hole 620. The locking nut 52 and the fixing nut 62 are also connected. The locking nut 52 and the fixing nut 62 are provided with matching threads, so that they form a pair of tightening nuts on the support screw 51. When the tightening nuts are tightly connected, the support screw 51 and the fixing nut 62 cannot slide relative to each other. At this time, the first connecting piece 5 and the second connecting piece 6 are in a locked state, that is, the connection length of the first connecting piece 5 and the second connecting piece 6 between the third rotating shaft 9 and the fourth rotating shaft 10 is fixed, thereby restricting the rotational freedom of the second support leg 3 and the first support leg 2, so that the second support leg 3 and the first support leg 2 are in a locked state that cannot be rotated or folded relative to each other, thereby forming a stable support structure between the first support leg 2 and the second support leg 3, and thus achieving effective support for the equipment.

[0060] In some implementations, please refer to Figure 1 , Figure 3 , Figure 4 , Figure 5 When the first connecting piece 5 and the second connecting piece 6 are locked, the line connecting the projections of the first rotating shaft 7, the third rotating shaft 9, and the fourth rotating shaft 10 in the vertical plane forms a triangle. Thus, when the first connecting piece 5 and the second connecting piece 6 are locked to lock the first support leg 2 and the second support leg 3, the line connecting the projections of the first rotating shaft 7, the third rotating shaft 9, and the fourth rotating shaft 10 in the vertical plane forms a triangle. The connection length between the first connecting piece 5 and the second connecting piece 6 and the third rotating shaft 9 and the fourth rotating shaft 10 is fixed, meaning the length of the longer side of the triangle is fixed. Furthermore, the positions of the first rotating shaft 7 and the third rotating shaft 9 on the first support leg 2 are fixed, and the position of the fourth rotating shaft 10 on the second support leg 3 is fixed, meaning the lengths of the two shorter sides of the triangle are fixed, and the angle is fixed. Therefore, the triangle shape formed by the projections of the first rotating shaft 7, the third rotating shaft 9, and the fourth rotating shaft 10 in the vertical plane is fixed. At this time, the first support leg 2 and the second support leg 3, which are in a locked state, are reliably connected, have high stability, high structural strength, and good load-bearing capacity, which can effectively ensure the reliability and stability of the equipment installed on this folding support leg on the ship's deck.

[0061] In some implementations, please refer to Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 The first support leg 2 includes a mounting part 21 and a connecting part 22. The mounting part 21 is a tubular structure that matches the mounting tube 1. The mounting part 21 can be slidably sleeved inside the mounting tube 1 and can be locked and positioned with the mounting tube 1. The connecting part 22 is fixedly embedded in the mounting part 21 and extends beyond the mounting part 21. The upper and lower sides of the end of the connecting part 22 away from the mounting part 21 are respectively rotatably mounted with a third rotating shaft 9 and a first rotating shaft 7. The second support leg 3 is covered and disposed on the outside of the connecting part 22. The end of the second support leg 3 away from the supporting foot 4 is hinged to the connecting part 22 through the first rotating shaft 7.

[0062] Thus, by making the mounting part 21 a tubular structure that matches the mounting tube 1 and can be slidably fitted inside the mounting tube 1, and by fixing the connecting part 22 inside the mounting part 21, and by covering the outside of the connecting part 22 with the second support leg 3, the connecting part 22 of the second support leg 3 and the first support leg 2 are arranged in an inner and outer covering state. On the one hand, this can avoid interference with the third pivot 9 when the second support leg 3 is folded and retracted. On the other hand, it can provide a placement space for the second support leg 3 to be folded and retracted on the first support leg 2, so as to facilitate the folding and retraction of the second support leg 3 and the first support leg 2. In this way, the first support leg 2, the second support leg 3, and the support foot 4 can be stored as a whole inside the mounting tube 1 after being folded and retracted.

[0063] In some implementations, please refer to Figure 1 , Figure 3 , Figure 6 The connecting part 22 of the first support leg 2 is a hollow, top-opening groove structure, and the second support leg 3 is a hollow, bottom-opening groove structure. When the second support leg 3 and the first support leg 2 are folded together, a receiving cavity 200 is formed between them, and the first connecting member 5 and the second connecting member 6 are placed inside the receiving cavity 200. In this way, by constructing a receiving cavity 200 between the second support leg 3 and the first support leg 2, the receiving cavity 200 can provide installation space and a reliable installation position for the first connecting member 5 and the second connecting member 6. At the same time, the receiving cavity 200 can also provide displacement space for the support screw 51 that slides in the smooth through hole 620 of the fixing nut 62 during the rotation of the second support leg 3 and the first support leg 2.

[0064] In some implementations, please refer to Figure 1 , Figure 3 , Figure 6 , Figure 7The top and side walls of the mounting portion 21 of the first support leg 2, near the end of the second support leg 3, have notches to form a first positioning portion 211, and the side wall of the second support leg 3 has notches to form a second positioning portion 31. When the second support leg 3 and the first support leg 2 are folded together, the second positioning portion 31 and the first positioning portion 211 are just engaged. At this time, the top surface of the folded second support leg 3 is coplanar with the top surface of the mounting portion 21, and the outer side wall of the second support leg 3 is coplanar with the plane of the outer side wall of the mounting portion 21.

[0065] Thus, by constructing a first positioning part 211 on the mounting part 21 of the first support leg 2 and correspondingly constructing a second positioning part 31 on the second support leg 3, the second positioning part 31 and the first positioning part 211 can be engaged when the second support leg 3 and the first support leg 2 are folded together. This allows the second positioning part 31 and the first positioning part 211 to provide space for the second support leg 3 to be folded together on the first support leg 2 when the first support leg 2, the second support leg 3, and the support foot 4 are folded together. This facilitates the folding and folding of the second support leg 3 and the first support leg 2, and allows the folded and folded first support leg 2, the second support leg 3, and the support foot 4 to be stored as a whole inside the mounting tube 1.

[0066] In some implementations, please refer to Figure 1 , Figure 3 , Figure 6 , Figure 7 The top wall of the mounting part 21 of the first support leg 2 near the first positioning part 211 has a notch to form a first placement groove 212; the top surface of the second support leg 3 after folding is a flat structure, and the lower ends of the top wall and side walls of the second support leg 3 after folding have notches to form a second placement groove 32; the bottom of the support foot 4 is a flat structure, and the bottom surface of the support foot 4 when unfolded is a flat surface, and the support foot 4 can rotate around the second pivot 8 and fold together with the second support leg 3; thus, when the first support leg 2, the second support leg 3, and the support foot 4 are folded together, the first placement groove 212 and the second placement groove 32 are connected, and the support foot 4 is placed in the first placement groove 212 and the second placement groove 32. At this time, the bottom surface of the support foot 4 when unfolded is coplanar with the top surface of the second support leg 3 after folding and the top surface of the mounting part 21 of the first support leg 2, and the outer wall surface of the support foot 4 is coplanar with the plane containing the outer wall surface of the second support leg 3 and the outer wall surface of the mounting part 21.

[0067] Thus, by constructing a first placement groove 212 on the first support leg 2 and a second placement groove 32 on the second support leg 3, when the first support leg 2, the second support leg 3, and the support foot 4 are folded and folded together, the connected first placement groove 212 and second placement groove 32 provide a placement space for the support foot 4, so that the support foot 4 can be stored together with the first support leg 2 and the second support leg 3 in the installation tube 1 after folding and folding.

[0068] In some implementations, please refer to Figure 1 , Figure 2 , Figure 7 A locking groove 101 is provided on one side wall of the mounting tube 1 along the length direction. A first screw hole 213 matching the locking groove 101 is provided on the top wall of the mounting part 21 of the first support leg 2. The mounting part 21 and the mounting tube 1 can be locked and positioned by a locking screw 11 that passes through the locking groove 101 and the first screw hole 213.

[0069] Thus, the locking screw 11 and the first screw hole 213 can always match the telescopic displacement of the mounting part 21 of the first support leg 2 in the mounting tube 1 through the locking groove 101. The mounting part 21 of the first support leg 2 can be locked or its position adjusted in the mounting tube 1 by passing the locking screw 11 through the locking groove 101 and the first screw hole 213 and tightening or loosening it with the mounting tube 1, so as to fix or adjust the position of the first support leg 2 and the second support leg 3.

[0070] Finally, it should be noted that although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention, all of which should be included within the protection scope of this application.

Claims

1. A folding support leg that can be quickly unfolded and fixed, characterized in that, include: The mounting tube (1) is a hollow tubular structure, and the mounting tube (1) is fixedly installed at the bottom of the equipment that needs to be supported and fixed. The first support leg (2) is slidably embedded in the mounting tube (1) and can be locked and positioned with the mounting tube (1); The second support leg (3) is rotatably hinged to the end of the first support leg (2) away from the mounting tube (1) via the first pivot (7); Support foot (4), which is rotatably hinged to the end of the second support leg (3) away from the first support leg (2) via a second pivot (8); The first support leg (2), the second support leg (3), and the support foot (4) can be folded and stored in the cavity of the mounting tube (1); The first support leg (2) is rotatably mounted with a third rotating shaft (9), and a first connecting piece (5) is threadedly mounted on the third rotating shaft (9). The second support leg (3) is rotatably mounted with a fourth rotating shaft (10), and a second connecting piece (6) is fixedly mounted on the fourth rotating shaft (10). The first connecting piece (5) and the second connecting piece (6) can be locked together by threads. When the first connecting piece (5) and the second connecting piece (6) are locked together, the second support leg (3) and the first support leg (2) are locked together and cannot be rotated or folded relative to each other. The first connector (5) includes a support screw (51) and a locking nut (52). The support screw (51) passes vertically through the third rotating shaft (9) and is threadedly connected to the third rotating shaft (9) and extends to the inner side of the second support leg (3). The locking nut (52) is movably installed on the end of the support screw (51) away from the third rotating shaft (9) by means of threads. The second connector (6) includes a fixing bracket (61) and a fixing nut (62). The fixing bracket (61) is fixedly installed on both ends of the fourth rotating shaft (10). The fixing nut (62) is fixedly installed on the end of the fixing bracket (61) away from the fourth rotating shaft (10). The fixing nut (62) has a smooth through hole (620) in the axial direction. The end of the support screw (51) away from the third rotating shaft (9) can be slidably inserted into the smooth through hole (620) of the fixing nut (62). The locking nut (52) and the fixing nut (62) are provided with matching threads. The locking nut (52) and the fixing nut (62) form a pair of tightening nuts. When the locking nut (52) and the fixing nut (62) are tightly connected, the support screw (51) and the fixing nut (62) cannot slide relative to each other. At this time, the first connecting member (5) and the second connecting member (6) are locked. The first support leg (2) includes a mounting part (21) and a connecting part (22). The mounting part (21) is a tubular structure that matches the mounting tube (1). The mounting part (21) is slidably sleeved inside the mounting tube (1). The mounting part (21) can be locked and positioned with the mounting tube (1). The connecting part (22) is fixedly embedded in the mounting part (21) and extends beyond the mounting part (21). The upper and lower sides of the end of the connecting part (22) away from the mounting part (21) are respectively rotatably mounted with a third rotating shaft (9) and a first rotating shaft (7). The second support leg (3) is covered and disposed outside the connecting part (22). The end of the second support leg (3) away from the support foot (4) is hinged to the connecting part (22) through the first rotating shaft (7). The top and side walls of the mounting portion (21) of the first support leg (2) near the end of the second support leg (3) have notches to form a first positioning portion (211), and the side wall of the second support leg (3) has notches to form a second positioning portion (31). When the second support leg (3) and the first support leg (2) are folded together, the second positioning portion (31) and the first positioning portion (211) are just engaged. At this time, the top surface of the second support leg (3) after folding is coplanar with the top surface of the mounting portion (21), and the outer side wall of the second support leg (3) is coplanar with the plane of the outer side wall of the mounting portion (21).

2. The folding support leg that can be quickly unfolded and fixed according to claim 1, characterized in that: When the first connector (5) and the second connector (6) are locked together, the line connecting the projections of the first rotating shaft (7), the third rotating shaft (9), and the fourth rotating shaft (10) in the vertical plane forms a triangle.

3. A folding support leg that can be quickly unfolded and fixed according to claim 1, characterized in that: The connecting part (22) of the first support leg (2) is a groove-shaped structure with a hollow interior and an open top. The second support leg (3) is a groove-shaped structure with a hollow interior and an open bottom after folding. When the second support leg (3) and the first support leg (2) are folded together, a receiving cavity (200) is formed between the second support leg (3) and the first support leg (2). The first connector (5) and the second connector (6) are placed in the receiving cavity (200).

4. A folding support leg that can be quickly unfolded and fixed according to claim 1, characterized in that: The top wall of the mounting portion (21) of the first support leg (2) near the first positioning portion (211) has a notch to form a first placement groove (212). The top surface of the second support leg (3) after folding is a planar structure, and the lower ends of the top wall and side walls of the second support leg (3) after folding have notches to form a second placement groove (32). The bottom of the supporting foot (4) is a flat structure, and the bottom surface of the supporting foot (4) is a plane when it is unfolded. The supporting foot (4) can rotate around the second pivot (8) and fold together with the second supporting leg (3). When the first support leg (2), the second support leg (3), and the support foot (4) are folded together, the first placement groove (212) and the second placement groove (32) are connected. The support foot (4) is placed in the first placement groove (212) and the second placement groove (32). At this time, the bottom surface of the support foot (4) when unfolded is coplanar with the top surface of the second support leg (3) after folding and the top surface of the mounting part (21) of the first support leg (2). The outer wall surface of the support foot (4) is coplanar with the plane containing the outer wall surface of the second support leg (3) and the outer wall surface of the mounting part (21).

5. A folding support leg that can be quickly unfolded and fixed according to claim 1, characterized in that: A locking groove (101) is provided on one side wall of the mounting tube (1) along the length direction. A first screw hole (213) matching the locking groove (101) is provided on the top wall of the mounting part (21) of the first support leg (2). The mounting part (21) and the mounting tube (1) can be locked and positioned by a locking screw (11) that passes through the locking groove (101) and the first screw hole (213).

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