A virtual leg detection mechanism and manufacturing method thereof

Abstract

The present invention provides a virtual leg detection mechanism, including a connecting seat; the upper end surface of the connecting seat is connected to a cylinder, the lower end surface is connected to a ball head seat, and the inner bottom of the connecting seat is connected to a breathable valve; the ball head seat and the connecting seat are connected by a guide column, and a first spring is sleeved on the guide column; one side of the connecting seat is connected to a support, and one end of the support is connected to a protective tube; a micro switch is arranged in the support, and the micro switch is connected to the connecting seat through a push rod. The present invention has a compact structure and is suitable for installation and use of various leg structures; it has sensitive induction, the virtual leg judgment load can be arbitrarily changed and set, and the feedback is direct and simple; it has the advantages of high protection level, stable operation, simple manufacturing and assembly, etc.

Description

Technical Field

[0001] The invention relates to a virtual leg detection mechanism and a manufacturing method thereof, belonging to the technical field of mechanical design. Background Art

[0002] Since virtual leg detection is an indispensable and important part of vehicle-mounted support and can effectively solve the safety and reliability problems of vehicle-mounted platform support, the virtual leg detection mechanism is widely used in various fields. Due to its compact structure, simple and reliable structure, low cost and strong protection capability, the application prospect of the virtual leg detection mechanism is bright.

[0003] Existing virtual leg detection technology has defects such as low reliability: ① In the vehicle-mounted platform of the electric cylinder outrigger, the servo motor current mutation is often used to judge the virtual leg. This method requires current detection during the operation of the electric cylinder, but the reliability is not high. When the temperature changes greatly or the consistency of the electric cylinder varies, it may cause a sudden change in the current value and cause misjudgment. ② In the vehicle-mounted platform of the hydraulic outrigger, pressure sensors are often used to determine the virtual leg situation of the outrigger. The pressure sensor is also affected by the ambient temperature and the consistency of the cylinder body, and has low reliability. ③ The above methods are all indirect judgments on the virtual leg situation and cannot directly reflect whether there is a virtual leg. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a virtual leg detection mechanism and a manufacturing method thereof, which can effectively solve the defects of the prior art such as low reliability, high requirements for the cylinder body, and inability to intuitively feedback the virtual leg status.

[0005] The present invention is achieved through the following technical solutions.

[0006] The present invention provides a virtual leg detection mechanism, which includes a connecting seat; the upper end surface of the connecting seat is connected to a cylinder, the lower end surface is connected to a ball head seat, and the inner bottom of the connecting seat is connected to a breathable valve; the ball head seat and the connecting seat are connected by a guide column, and a first spring is sleeved on the guide column; one side of the connecting seat is connected to a support, and one end of the support is connected to a protective tube; a micro switch is arranged in the support, and the micro switch is connected to the connecting seat through a push rod.

[0007] The cylinder barrel and the connecting seat are connected by screws, and the air-permeable valve and the connecting seat are threadedly connected.

[0008] The guide column passes through the ball head seat and is threadedly connected with the connecting seat.

[0009] The support is connected to the connecting seat through screws.

[0010] A spiral cable is arranged in the protection tube, and the spiral cable is electrically connected to the micro switch.

[0011] The micro switch is connected to the support through a screw.

[0012] A second spring is sleeved on the push rod.

[0013] One side of the connecting seat is provided with an outer edge countersunk hole for installing the ejector rod.

[0014] An O-shaped sealing ring is arranged on the connection surface where the outer edge countersunk hole contacts the ball head seat.

[0015] A manufacturing method of a virtual leg detection mechanism includes the following steps:

[0016] ① The connecting seat is installed at the lower end of the cylinder, and the interior of the connecting seat is a cylindrical cavity; the lower end of the connecting seat is connected to the ball head seat through a guide column, and the axial position is limited by the guide column at the same time. The connecting seat and the ball head seat are separated by a first spring and a gap is left;

[0017] ②The micro switch is fixed on the connection seat, and the line is protected by the support and protective tube. The cable adopts spiral cable and can be retracted;

[0018] ③Install the air valve on the upper end of the connecting seat;

[0019] ④ An O-ring installation groove is provided on the outer edge of the large end of the ball head seat, and an O-ring sealing ring is installed in the O-ring installation groove.

[0020] The beneficial effects of the present invention are: compact structure, suitable for installation and use in various leg structures; sensitive sensing, the virtual leg judgment load can be arbitrarily changed and set, and the feedback is direct and simple; high protection level, stable operation, simple manufacturing and assembly, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 It is a working process state diagram of the present invention;

[0023] In the figure: 1-cylinder, 2-connecting seat, 3-first spring, 4-guide column, 5-ball head seat, 6-spiral cable, 7-protective tube, 8-support, 9-micro switch, 10-second spring, 11-thrust rod, 12-O-ring, 13-breathing valve. DETAILED DESCRIPTION

[0024] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0025] like Figure 1 and Figure 2A virtual leg detection mechanism shown in the figure includes a connecting seat 2; the upper end surface of the connecting seat 2 is connected to a cylinder 1, the lower end surface is connected to a ball head seat 5, and the inner bottom of the connecting seat 2 is connected to a breathable valve 13; the ball head seat 5 and the connecting seat 2 are connected through a guide column 4, and a first spring 3 is sleeved on the guide column 4; one side of the connecting seat 2 is connected to a support 8, and one end of the support 8 is connected to a protective tube 7; a micro switch 9 is arranged in the support 8, and the micro switch 9 is connected to the connecting seat 2 through a push rod 11.

[0026] The cylinder 1 is connected to the connecting seat 2 by screws, and the air vent valve 13 is connected to the connecting seat 2 by threads.

[0027] The guide column 4 passes through the ball head seat 5 and is threadedly connected to the connecting seat 2.

[0028] The support 8 is connected to the connecting base 2 by screws.

[0029] A spiral cable 6 is disposed in the protection tube 7 , and the spiral cable 6 is electrically connected to the micro switch 9 .

[0030] The micro switch 9 is connected to the support 8 via screws.

[0031] The second spring 10 is sleeved on the push rod 11 .

[0032] One side of the connecting seat 2 is provided with an outer edge countersunk hole for mounting the top rod 11 .

[0033] An O-ring 12 is provided on the connection surface where the outer edge counterbore contacts the ball head seat 5 .

[0034] Also included is a manufacturing method of a virtual leg detection mechanism, the steps are as follows:

[0035] ① The connecting seat 2 is installed at the lower end of the cylinder 1, and the interior of the connecting seat 2 is a cylindrical cavity; the lower end of the connecting seat 2 is connected to the ball head seat 5 through the guide column 4, and the axial position is limited by the guide column 4. The connecting seat 2 and the ball head seat 5 are separated by the first spring 3 and a gap is left;

[0036] ② The micro switch 9 is fixed on the connection base 2, and the line is protected by the support 8 and the protective tube 7. The cable adopts a spiral cable 6 and can be retracted;

[0037] ③ Install the air valve 13 on the upper end of the connecting seat 2;

[0038] ④ An O-ring mounting groove is provided on the outer edge of the large end of the ball head seat 5, and an O-ring sealing ring 12 is installed in the O-ring mounting groove.

[0039] The working principle of the present invention is: when the ball head seat 5 is subjected to an upward load, the ball head seat 5 overcomes the elastic force of the first spring 3 and the gravity of the ball head seat 5 and moves upward, and moves upward through the inclined surface of the bayonet on the outer edge of the ball head seat 5. The inclined surface contacts the arc surface of the push rod 11, pushing the push rod 11 to overcome the elastic force of the second spring 10 and move outward, triggering the sensing contact of the micro switch 9. After the micro switch 9 is triggered, a ground contact signal is fed back, and whether there is a virtual leg is determined by the switch signal.

Claims

1. A method for manufacturing a virtual leg detection mechanism, the detection mechanism comprising a connecting seat (2), characterized in that: The upper end surface of the connecting seat (2) is connected to a cylinder (1), the lower end surface is connected to a ball head seat (5), and the inner bottom of the connecting seat (2) is connected to a breathable valve (13); the ball head seat (5) and the connecting seat (2) are connected via a guide column (4), and a first spring (3) is sleeved on the guide column (4); one side of the connecting seat (2) is connected to a support (8), and one end of the support (8) is connected to a protective tube (7); a micro switch (9) is provided in the support (8), and the micro switch (9) is connected to the connecting seat (2) via a push rod (11); The manufacturing method comprises the following steps: ① The connecting seat (2) is mounted on the lower end of the cylinder (1), and the interior of the connecting seat (2) is a cylindrical cavity; the lower end of the connecting seat (2) is connected to the ball head seat (5) via a guide column (4), and the guide column (4) is used to limit the axial position, and the connecting seat (2) and the ball head seat (5) are separated by a first spring (3) and a gap is left in the middle; ② The micro switch (9) is fixed on the connecting base (2), and the line is protected by the support (8) and the protective tube (7). The cable adopts a spiral cable (6) which can be retracted; ③ Install a vent valve (13) on the upper end of the connecting seat (2); ④ An O-ring installation groove is provided on the outer edge of the large end of the ball head seat (5), and an O-ring sealing ring (12) is installed in the O-ring installation groove.

2. The manufacturing method of the virtual leg detection mechanism according to claim 1, characterized in that: The cylinder barrel (1) and the connecting seat (2) are connected via screws, and the air vent valve (13) and the connecting seat (2) are threadedly connected.

3. The manufacturing method of the virtual leg detection mechanism according to claim 1, characterized in that: The guide column (4) passes through the ball head seat (5) and is threadedly connected to the connecting seat (2).

4. The manufacturing method of the virtual leg detection mechanism according to claim 1, characterized in that: The support (8) is connected to the connecting seat (2) via screws.

5. The manufacturing method of the virtual leg detection mechanism according to claim 1, characterized in that: A spiral cable (6) is arranged inside the protective tube (7), and the spiral cable (6) is electrically connected to the micro switch (9).

6. The manufacturing method of the virtual leg detection mechanism according to claim 1, characterized in that: The micro switch (9) is connected to the support (8) via screws.

7. The manufacturing method of the virtual leg detection mechanism according to claim 1, characterized in that: A second spring (10) is sleeved on the push rod (11).

8. The manufacturing method of the virtual leg detection mechanism according to claim 1, characterized in that: One side of the connecting seat (2) is provided with an outer edge countersunk hole for mounting a push rod (11).

9. The manufacturing method of the virtual leg detection mechanism according to claim 8, characterized in that: An O-shaped sealing ring (12) is provided on the connection surface where the outer edge countersunk hole contacts the ball head seat (5).

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