Hard limiting structure for servo electric push rod

Abstract

The utility model discloses a hard limit structure for a servo electric push rod, which comprises a base, a servo push rod cylinder body is arranged above the base, a limit plate is arranged above the servo push rod cylinder body, and a servo push rod arranged at the output end of the servo push rod cylinder body penetrates through the center position of the limit plate. Two upper limiting rods and two lower limiting rods are distributed at the corresponding positions of the four corners of the limiting plate and the four corners of the flange plate in a staggered mode, and the upper ends of the two upper limiting rods and the upper ends of the two lower limiting rods penetrate through the flange plate; the lower ends of the two lower limiting rods penetrate through the limiting plate and extend to the position above the flange plate to be fixed through limiting rod nuts, the lower ends of the two lower limiting rods penetrate through the limiting plate and extend to the position below the limiting plate to be fixed through lower limiting flange nuts, the positions, located below the flange plate, of the two upper limiting rods are provided with upper limiting flange nuts, and one side of the flange plate is connected with the upper portion of the displacement detection rod. The utility model realizes the purpose of protecting the internal structure of the host.

Description

Technical Field

[0001] The utility model relates to the technical field, in particular to a hard limit structure for a servo electric push rod. Background Art

[0002] The servo push rod structure itself can determine the push rod position through the displacement sensor and control the push rod to move within the specified stroke. In order to prevent the electric limit from failing and the push rod from exceeding the specified stroke and damaging the host structure, a hard limit structure for the servo electric push rod is proposed. A hard limit structure is added to the servo electric push rod structure to limit the movement of the push rod within a safe range. Utility Model Content

[0003] The utility model aims to provide a hard limit structure for a servo electric push rod, comprising a base, a servo push rod cylinder body is arranged above the base, a limit plate is arranged above the servo push rod cylinder body, a servo push rod arranged at the output end of the servo push rod cylinder body passes through the center position of the limit plate, and extends to the top of the limit plate and is connected to the center position of the bottom of the flange plate, two upper limit rods and two lower limit rods are staggeredly arranged at corresponding positions at the four corners of the limit plate and the flange plate, the upper ends of the two upper limit rods and the two lower limit rods all pass through the flange plate, extend to the top of the flange plate and are fixed by limit rod nuts, the lower ends of the two lower limit rods all pass through the limit plate, and extend to the bottom of the limit plate and are fixed by lower limit flange nuts, the positions of the two upper limit rods located below the flange plate are provided with upper limit flange nuts, one side of the flange plate is connected to the top of the displacement detection rod, and the bottom of the displacement detection rod is connected to the displacement sensor.

[0004] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model can facilitate the limitation of the extension and retraction of the servo push rod by staggeredly arranging upper limit rods and lower limit rods at the four corners between the flange plate and the limit plate, and by the upper limit flange nut arranged on the upper limit rod and the lower limit flange nut arranged on the lower limit rod. The displacement detection rod moves during the movement, so that the displacement sensor monitors the displacement in real time, thereby facilitating the monitoring of the displacement and transmitting the displacement data to the background, indicating that the torque is too large. At this time, the servo push rod stops moving, thereby achieving the purpose of protecting the internal structure of the host. BRIEF DESCRIPTION OF THE DRAWINGS

[0005] Figure 1 It is a structural schematic diagram of the utility model;

[0006] Figure 2 It is a structural schematic diagram of the servo push rod of the utility model when it reaches the maximum extension amount;

[0007] Figure 3 It is a structural schematic diagram of the servo push rod of the utility model when it returns to the minimum extension amount.

[0008] The reference numerals and names in the figures are as follows:

[0009] 1. Adjustment block; 2. Locking nut one; 3. Adjustment rod; 4. Locking nut two; 5. Servo push rod; 6. Limit plate; 7. Servo push rod cylinder; 8. Limit rod nut; 9. Flange plate; 10. Upper limit flange nut; 11. Upper limit rod; 12. Lower limit rod; 13. Displacement detection rod; 14. Lower limit flange nut; 15. Displacement sensor; 16. Base. DETAILED DESCRIPTION

[0010] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0011] As attached Figure 1 As shown, the utility model provides a hard limit structure for a servo electric push rod, including a base 16, a servo push rod cylinder 7 is arranged above the base 16, a limit plate 6 is arranged above the servo push rod cylinder 7, a servo push rod 5 arranged at the output end of the servo push rod cylinder 7 passes through the center position of the limit plate 6, and extends to the top of the limit plate 6 and is connected to the bottom center position of the flange plate 9, two upper limit rods 11 and two lower limit rods 12 are staggeredly arranged at the corresponding positions of the four corners of the limit plate 6 and the flange plate 9, The upper ends of the two upper limit rods 11 and the two lower limit rods 12 pass through the flange plate 9, extend to the top of the flange plate 9 and are fixed by the limit rod nuts 8, the lower ends of the two lower limit rods 12 pass through the limit plate 6, extend to the bottom of the limit plate 6 and are fixed by the lower limit flange nuts 14, the two upper limit rods 11 are located below the flange plate 9 and are provided with upper limit flange nuts 10, one side of the flange plate 9 is connected to the top of the displacement detection rod 13, and the bottom of the displacement detection rod 13 is connected to the displacement sensor 15.

[0012] Specifically, the center position above the limit plate 6 is locked below the adjusting rod 3 by a locking nut 2 4 , and the top of the adjusting rod 3 is locked by a locking nut 1 2 , and an adjusting block 1 is provided above the locking nut 1 2 .

[0013] Specifically, one of the upper limit rods 11 is set at the front end of the right side of the servo push rod 5, and the other upper limit rod 11 is set at the rear end of the left side of the servo push rod 5. One of the lower limit rods 12 is set at the rear end of the right side of the servo push rod 5, and the other lower limit rod 12 is set at the front end of the left side of the servo push rod 5.

[0014] Working principle: When in use, the limit rod can be adjusted to the fixed position on the flange plate 9 according to the travel requirements. When the servo push rod cylinder 7 drives the servo push rod 5 to extend to the maximum extension, as shown in the attached Figure 2 As shown in the figure, the lower limit flange nut 14 collides with the lower limit plate 6. When the servo push rod cylinder 7 drives the servo push rod 5 to return to the minimum extension, as shown in the figure Figure 3 As shown, the upper limit flange nut 10 collides with the upper limit plate 6, the displacement detection rod 13 moves during the movement, and the displacement sensor 15 monitors the displacement in real time. When the upper limit flange nut 10 or the lower limit flange nut 14 collides with the limit plate 6, the displacement sensor 16 transmits the displacement information to the background, indicating that the torque is too large, and the servo push rod 5 stops moving.

[0015] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0016] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 an indirect connection 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 the present invention can be understood according to specific circumstances.

Claims

1. A hard limit structure for a servo electric push rod, comprising a base (16), characterized in that: A servo push rod cylinder (7) is arranged above the base (16), and a limit plate (6) is arranged above the servo push rod cylinder (7). A servo push rod (5) arranged at the output end of the servo push rod cylinder (7) passes through the center position of the limit plate (6) and extends to the top of the limit plate (6) and is connected to the center position of the bottom of the flange plate (9). Two upper limit rods (11) and two lower limit rods (12) are arranged in a staggered manner at corresponding positions at the four corners of the limit plate (6) and the flange plate (9). The two upper limit rods (11) and the two lower limit rods (12) The upper ends of the two lower limit rods (12) penetrate the flange plate (9) and extend to the top of the flange plate (9) to be fixed by the limit rod nut (8), the lower ends of the two lower limit rods (12) penetrate the limit plate (6) and extend to the bottom of the limit plate (6) to be fixed by the lower limit flange nut (14), the two upper limit rods (11) are provided with upper limit flange nuts (10) at the positions below the flange plate (9), one side of the flange plate (9) is connected to the top of the displacement detection rod (13), and the bottom of the displacement detection rod (13) is connected to the displacement sensor (15).

2. The hard limit structure for a servo electric push rod according to claim 1, characterized in that: The lower part of the adjusting rod (3) is locked by a locking nut 2 (4) at the center position above the limit plate (6), and the upper part of the adjusting rod (3) is locked by a locking nut 1 (2), and an adjusting block (1) is arranged above the locking nut 1 (2).

3. The hard limit structure for a servo electric push rod according to claim 1, characterized in that: One of the upper limit rods (11) is arranged at the front end of the right side of the servo push rod (5), and the other upper limit rod (11) is arranged at the rear end of the left side of the servo push rod (5); one of the lower limit rods (12) is arranged at the rear end of the right side of the servo push rod (5), and the other lower limit rod (12) is arranged at the front end of the left side of the servo push rod (5).

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