Automatic supporting leg structure

Abstract

The utility model relates to the technical field of aviation tools, and particularly discloses an automatic supporting leg structure. The automatic supporting leg structure comprises an upper supporting leg and a lower supporting leg which are arranged up and down, wherein two parallel rotating shafts are arranged between the upper supporting leg and the lower supporting leg; the rotating shaft is rotationally connected with a group of upper connecting arms and a group of lower connecting arms, one ends, far away from the rotating shaft, of the upper connecting arms are hinged with the upper supporting legs, and one ends, far away from the rotating shaft, of the lower connecting arms are hinged with the lower supporting legs; and a driving assembly for driving the two rotating shafts to get close to or deviate from each other is connected between the two rotating shafts. The automatic supporting leg structure is more convenient to lift and adjust and high in bearing capacity.

Description

Technical Field

[0001] The utility model relates to the technical field of aviation tooling, in particular to an automatic support foot structure. Background Technique

[0002] The existing lift-adjustable support feet generally include an inner tube and an outer tube arranged inside and outside, a lower support foot, an upper support foot, an adjustment mechanism and a locking pin. Among them, the lower support foot and the upper support foot are respectively connected to the inner tube and the outer tube; the adjustment mechanism includes a gear, a rack meshing with the gear and a handle. The gear is rotatably arranged on the outer tube, the rack is fixedly connected to the inner tube, and the handle drives the gear to rotate; the locking pin is detachably connected to the inner tube and the outer tube. When in use, first pull out the locking pin, then rotate the handle to drive the gear to rotate. Through the meshing transmission of the gear and the rack, the outer tube moves up and down relative to the inner tube, thereby driving the upper support foot to move up and down; after moving in place, insert the locking pin to lock the inner tube and the outer tube. However, the height adjustment of this kind of support foot is cumbersome and the load-bearing capacity is limited, which is not suitable for large assembly tooling that requires multiple support feet. Summary of the Invention

[0003] The purpose of the utility model is to provide an automatic support foot structure, which is more convenient for lifting adjustment and has a strong load-bearing capacity.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] An automatic support foot structure includes an upper support foot and a lower support foot arranged up and down. Two parallel rotating shafts are arranged between the upper support foot and the lower support foot; a set of upper connecting arms and a set of lower connecting arms are rotatably connected to the rotating shafts. One end of the upper connecting arm far from the rotating shaft is hinged to the upper support foot, and one end of the lower connecting arm far from the rotating shaft is hinged to the lower support foot; a driving component for driving them to approach or separate from each other is connected between the two rotating shafts. The axial cross-section of the second connecting shaft (51) is T-shaped.

[0006] Furthermore, the driving component includes a lead screw arranged vertically to the two rotating shafts in the horizontal direction, a lead screw nut screwed to the lead screw and a reduction motor; one end of the lead screw is rotatably connected to the first rotating shaft, and the other end movably passes through the second rotating shaft. The lead screw nut is rotatably connected to the second rotating shaft; the reduction motor is installed on the first rotating shaft, and the output end is connected to the lead screw.

[0007] Furthermore, each of the upper connecting arms and each of the lower connecting arms are symmetrically distributed on both sides of the lead screw.

[0008] Furthermore, two sliding guiding components are arranged between the upper support foot and the lower support foot.

[0009] Further, the sliding guide assembly includes a guide block vertically provided with a chute and a sliding rod slidably disposed in the chute; the guide block is connected to the upper support foot; the lower end of the sliding rod is connected to the lower support foot, and the upper end movably passes through the upper support foot.

[0010] Further, an avoidance groove is formed at one end of the upper connecting arm away from the upper support foot, and one end of the lower connecting arm is rotatably located in the avoidance groove; or

[0011] An avoidance groove is formed at one end of the lower connecting arm away from the lower support foot, and one end of the upper connecting arm is located in the avoidance groove.

[0012] Further, two travel switches are connected to the upper support foot, and two pressure plates for triggering the travel switches are connected to the lower support foot.

[0013] Further, the height positions of the two pressure plates are adjustable.

[0014] Further, the upper connecting arm is rotatably disposed in a first groove formed at the bottom of the upper support foot through a first connecting shaft, and the lower connecting arm is rotatably disposed in a second groove formed at the top of the lower support foot through a second connecting shaft; the first connecting shaft is connected to the upper support foot, and the second connecting shaft is connected to the lower support foot.

[0015] Further, the axial cross-sections of the first connecting shaft and the second connecting shaft are in a T shape, and a clamping groove is formed on the large-diameter end surface, and a clamping block is provided in the clamping groove, and the clamping block is connected to the upper support foot or the lower support foot.

[0016] The beneficial effects of the present utility model are as follows: The present utility model provides an automatic support foot structure. Driven by a driving component, two rotating shafts approach or move away from each other, driving each upper connecting arm and lower connecting arm to rotate around the corresponding rotating shaft, so that the upper support foot moves up and down relative to the lower support foot; the lifting adjustment of this automatic support foot structure is more convenient, and it has a strong load-bearing capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of an automatic support foot structure provided by the present utility model.

[0018] Figure 2 is a front view of an automatic support foot structure provided by the present utility model.

[0019] Figure 3 is a schematic structural diagram of an automatic support foot structure provided by the present utility model from another angle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The technical solution of the present utility model will be further described below in conjunction with the accompanying drawings and through specific embodiments.

[0021] As shown in Figures 1 to 3 , an automatic support foot structure includes an upper support foot 1 and a lower support foot 2 arranged up and down. Two parallel rotating shafts 3 are arranged between the upper support foot 1 and the lower support foot 2. A group of upper connecting arms 4 and a group of lower connecting arms 5 are rotatably connected to the rotating shaft 3. One end of the upper connecting arm 4 far from the rotating shaft 3 is hinged to the upper support foot 1, and one end of the lower connecting arm 5 far from the rotating shaft 3 is hinged to the lower support foot 2. A driving component 6 for driving them to approach or depart from each other is connected between the two rotating shafts 3.

[0022] Specifically, as shown in Figure 1 and 2 , the upper connecting arm 4 is rotatably arranged in a first groove opened at the bottom of the upper support foot 1 through a first connecting shaft 41, and the lower connecting arm 5 is rotatably arranged in a second groove opened at the top of the lower support foot 2 through a second connecting shaft 51. The first connecting shaft 41 is connected to the upper support foot 1, and the second connecting shaft 51 is connected to the lower support foot 2. Among them, two vertical plates can be respectively connected to the opposite sides of the upper support foot 1 and the lower support foot 2 to form the first groove / second groove, or connecting blocks provided with the first groove / second groove can be respectively connected to the opposite sides of the upper support foot 1 and the lower support foot 2.

[0023] In this embodiment, the axial cross-sections of the first connecting shaft 41 and the second connecting shaft 51 are T-shaped, and clamping grooves are opened on the large-diameter end faces of the first connecting shaft 41 and the second connecting shaft 51. A clamping block 10 is arranged in the clamping groove, and the clamping block 10 is connected to the upper support foot 1 or the lower support foot 2.

[0024] As an embodiment of the present utility model, an avoidance groove 8 is opened at one end of the upper connecting arm 4 far from the upper support foot 1, and one end of the lower connecting arm 5 is rotatably located in the avoidance groove 8. As another embodiment of the present utility model, an avoidance groove 8 is opened at one end of the lower connecting arm 5 far from the lower support foot 2, and one end of the upper connecting arm 4 is located in the avoidance groove 8. With this structure, the structural strength at the connection of the rotating shaft 3 can be further improved, and the structural stability is higher.

[0025] In this automatic support foot structure, the driving component 6 includes a lead screw 61 arranged perpendicular to the two rotating shafts 3 in the horizontal direction, a lead screw nut 62 screwed to the lead screw 61, and a reduction motor 63. One end of the lead screw 61 is rotatably connected to the first rotating shaft 3, and the other end movably passes through the second rotating shaft 3. The lead screw nut 62 is rotatably connected to the second rotating shaft 3. The reduction motor 63 is installed on the first rotating shaft 3, and the output end of the reduction motor 63 is connected to the lead screw 61.

[0026] During use, driven by the reduction motor 63, the lead screw 61 rotates relative to the two rotating shafts 3, driving the lead screw nut 62 to move axially along the lead screw 61, so that the two rotating shafts 3 approach or move away from each other, and further realizing the lifting movement of the upper support foot 1 relative to the lower support foot 2.

[0027] In this embodiment, four upper connecting arms 4 and four lower connecting arms 5 are provided. Preferably, each upper connecting arm 4 and each lower connecting arm 5 are symmetrically distributed on both sides of the lead screw 61.

[0028] In this automatic support foot structure, in order to prevent the upper support foot 1 from shifting during the lifting movement, two sliding guide assemblies 7 are provided between the upper support foot 1 and the lower support foot 2. The sliding guide assembly 7 includes a guide block 71 vertically provided with a chute and a slide bar 72 slidably disposed in the chute; wherein, the guide block 71 is connected to the upper support foot 1; the lower end of the slide bar 72 is connected to the lower support foot 2, and the upper end movably passes through the upper support foot 1.

[0029] In this automatic support foot structure, the upper support foot 1 is connected with two travel switches 91, and the lower support foot 2 is connected with two pressure plates 92 for triggering the travel switches 91. When the pressure plate 92 triggers the corresponding travel switch 91, the reduction motor 63 stops working.

[0030] Furthermore, the height positions of the two pressure plates 92 are adjustable. As Figure 3 shown, the two pressure plates 92 are connected to the lower support foot 2 through a bracket 21; the pressure plate 92 is provided with a long adjustment hole 921, and the bracket 21 is provided with a screw hole corresponding to the adjustment hole 921; a bolt passes through the adjustment hole 921 and is screwed into the screw hole. During use, the height of the pressure plate 92 on the bracket 21 is adjusted by adjusting the position of the bolt in the adjustment hole 921.

[0031] For an automatic support foot structure of the present utility model, during use, driven by the reduction motor 63, the lead screw 61 rotates relative to the two rotating shafts 3, driving the lead screw nut 62 to move axially along the lead screw 61, so that the two rotating shafts 3 approach each other; due to the approach of the two rotating shafts 3, the upper connecting arm 4 and the lower connecting arm 5 rotate around the corresponding rotating shafts 3, thereby promoting the upward movement of the upper support foot 1 relative to the lower support foot 2; similarly, under the reverse drive of the reduction motor 63, the lead screw 61 rotates in the reverse direction relative to the two rotating shafts 3, driving the lead screw nut 62 to move axially along the lead screw 61, so that the two rotating shafts 3 move away from each other; due to the separation of the two rotating shafts 3, the upper connecting arm 4 and the lower connecting arm 5 rotate around the corresponding rotating shafts 3, thereby promoting the downward movement of the upper support foot 1 relative to the lower support foot 2. The lifting adjustment of this automatic support foot structure is more convenient and has a strong load-bearing capacity.

[0032] The technical principle of the present utility model has been described in combination with specific embodiments above. These descriptions are only for explaining the principle of the present utility model and cannot be construed as limiting the protection scope of the present utility model in any way. Based on the explanations herein, those skilled in the art can readily conceive of other specific embodiments of the present utility model without creative efforts, and these embodiments will fall within the protection scope of the present utility model.

Claims

1. An automatic support foot structure, characterized in that: The invention comprises an upper supporting foot (1) and a lower supporting foot (2) which are arranged in a vertical direction, wherein two parallel rotating shafts (3) are arranged between the upper supporting foot (1) and the lower supporting foot (2); a group of upper connecting arms (4) and a group of lower connecting arms (5) are rotatably connected to the rotating shaft (3); an end of the upper connecting arm (4) away from the rotating shaft (3) is hinged to the upper supporting foot (1), and an end of the lower connecting arm (5) away from the rotating shaft (3) is hinged to the lower supporting foot (2); and a driving component (6) is connected between the two rotating shafts (3) for driving them to move toward or away from each other.

2. The automatic support foot structure according to claim 1, characterized in that: The driving assembly (6) comprises a screw rod (61) arranged perpendicular to the two rotating shafts (3) in a horizontal direction, a screw rod nut (62) threadedly connected to the screw rod (61), and a reduction motor (63); one end of the screw rod (61) is rotatably connected to the first rotating shaft (3), and the other end movably passes through the second rotating shaft (3); the screw rod nut (62) is rotatably connected to the second rotating shaft (3); the reduction motor (63) is mounted on the first rotating shaft (3), and the output end is connected to the screw rod (61).

3. The automatic support foot structure according to claim 2, characterized in that: Each of the upper connecting arms (4) and each of the lower connecting arms (5) are symmetrically distributed on both sides of the screw rod (61).

4. The automatic support foot structure according to claim 1, characterized in that: Two sliding guide assemblies (7) are arranged between the upper supporting foot (1) and the lower supporting foot (2).

5. The automatic support foot structure according to claim 4, characterized in that: The sliding guide assembly (7) comprises a guide block (71) having a slide groove vertically formed therein and a slide rod (72) slidably arranged in the slide groove; the guide block (71) is connected to the upper support leg (1); the lower end of the slide rod (72) is connected to the lower support leg (2), and the upper end movably passes through the upper support leg (1).

6. The automatic support foot structure according to claim 1, characterized in that: An escape groove (8) is provided at one end of the upper connecting arm (4) away from the upper supporting foot (1), and one end of the lower connecting arm (5) is rotated and located in the escape groove (8); or An avoidance groove (8) is provided at one end of the lower connecting arm (5) away from the lower supporting foot (2), and one end of the upper connecting arm (4) is located in the avoidance groove (8).

7. The automatic support foot structure according to claim 1, characterized in that: The upper supporting foot (1) is connected to two travel switches (91), and the lower supporting foot (2) is connected to two pressure plates (92) for triggering the travel switches (91).

8. The automatic support foot structure according to claim 7, characterized in that: The height positions of the two pressing plates (92) are adjustable.

9. The automatic support foot structure according to claim 1, characterized in that: The upper connecting arm (4) is rotatably disposed in a first groove opened at the bottom of the upper supporting foot (1) via a first connecting shaft (41), and the lower connecting arm (5) is rotatably disposed in a second groove opened at the top of the lower supporting foot (2) via a second connecting shaft (51); the first connecting shaft (41) is connected to the upper supporting foot (1), and the second connecting shaft (51) is connected to the lower supporting foot (2).

10. The automatic support foot structure according to claim 9, characterized in that: The axial cross-sections of the first connecting shaft (41) and the second connecting shaft (51) are T-shaped, and the large-diameter end faces are provided with a clamping groove, in which a clamping block (10) is provided, and the clamping block (10) is connected to the upper supporting leg (1) or the lower supporting leg (2).

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