An adaptive high-reliability locking device

Abstract

This invention provides an adaptive, high-reliability locking device, comprising a guide rail; a locking tongue and a pressure block are sequentially arranged above the guide rail, and a long sensing plate, an electric push rod, a limit seat, a tension rod, and an adjusting fixing seat are sequentially arranged below the guide rail; a proximity switch mounting seat is installed on the long sensing plate, and a sleeve is provided on the limit seat; the long sensing plate is connected to the electric push rod via a first pin, the electric push rod is connected to the limit seat, the limit seat is connected to the tension rod via a tension spring, and the tension rod is connected to the adjusting fixing seat. This invention features adaptive locking, ensuring that the erecting body can be locked even when the angle of rotation to the final position is slightly different; the reliability of the judgment is improved through dual judgment, and the integrated overrunning clutch causes the electric push rod to idle when the output force exceeds the rated value. Even if the electronic control judgment fails, the mechanical mechanism will limit the output force through idle rotation, resulting in high reliability.

Description

Technical Field

[0001] This invention relates to an adaptive, high-reliability locking device. Background Technology

[0002] High-precision instrument platforms have stringent requirements for the locking and unlocking of the erection system. Currently, commonly used locking and unlocking devices include hydraulic cylinder locking and unlocking devices, which lock by extending the piston rod of the locking cylinder into two relatively movable parts, and unlock by retracting the piston rod. However, since the erection system requires locking and unlocking between the erecting body and the fixed frame, and the space at the connection between the erecting body and the fixed frame is limited, using a hydraulic cylinder locking and unlocking device in this area would result in insufficient space and low reliability, so it has not been adopted. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention provides an adaptive, highly reliable locking device.

[0004] The present invention is achieved through the following technical solutions.

[0005] This invention provides an adaptive high-reliability locking device, comprising a guide rail; a locking tongue and a pressure block are sequentially arranged above the guide rail, and a long sensing plate, an electric push rod, a limit seat, a tension rod, and an adjusting fixing seat are sequentially arranged below the guide rail; a proximity switch mounting seat is installed on the long sensing plate, and a sleeve is provided on the limit seat; the long sensing plate is connected to the electric push rod through a first pin, the electric push rod is connected to the limit seat, the limit seat is connected to the tension rod through a tension spring, and the tension rod is connected to the adjusting fixing seat; a second proximity switch and a first proximity switch are respectively connected to both sides of the proximity switch mounting seat, and a wear-resistant copper plate is connected to the lower side of the locking tongue.

[0006] The sleeve is connected to the limiting seat via the seventh screw and the second pin.

[0007] A first retaining ring and a third pin are provided between the tension spring and the tension rod.

[0008] A first wire threaded sleeve is provided between the tensioning rod and the adjusting fixed seat.

[0009] One end of the guide rail is provided with a cover plate, which is connected to the guide rail by a third washer and a sixth screw.

[0010] The latch is connected to the guide rail via a fourth washer, a fifth washer, and an eighth screw. The bottom of the latch is installed inside the guide rail. A first copper sliding sleeve and a second copper sliding sleeve are respectively provided between the bottom two sides of the latch and the inner wall of the guide rail. The first copper sliding sleeve is connected to the latch via a first screw, a second wire thread sleeve, and a second screw. The second copper sliding sleeve is connected to the latch via a pad, a grid, and a second retaining ring.

[0011] The adjusting mounting base is connected to the guide rail via an adjusting nut and a fifth screw.

[0012] The pressure block is connected to the guide rail by a pin.

[0013] Between the pad and the second retaining ring, there are sequentially arranged a roller and a sensing plate that are connected to the locking tongue.

[0014] The wear-resistant copper plate is connected to the locking tongue by a third screw, a first washer, a second washer, and a fourth screw.

[0015] The beneficial effects of this invention are as follows: it has locking self-adaptability, ensuring that the erecting body can be locked even when the angle of rotation of the erecting body is slightly different; the reliability of judgment is improved by dual judgment; the integrated overrunning clutch makes the electric push rod idle when the output force exceeds the rated value, and even if the electronic control judgment fails, the mechanical system will limit the output force by idling, which is highly reliable. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention;

[0017] Figure 2 This is the left view of the present invention;

[0018] Figure 3 This is a top view of the present invention;

[0019] In the diagram: 1-Guide rail, 2-First wire thread sleeve, 3-Needle roller, 4-Second wire thread sleeve, 5-First screw, 6-Grate, 7-Pack, 8-Second screw, 9-Proximity switch mounting base, 10-Long sensing plate, 11-Adjusting nut, 12-First proximity switch, 13-Second proximity switch, 14-Electric push rod, 15-First copper sliding sleeve, 16-Third screw, 17-First washer, 18-Second washer, 19-Fourth screw, 20-Third washer, 21-Fifth screw 22-4th washer, 23-5th washer, 24-6th screw, 25-7th screw, 26-8th screw, 27-1st retaining ring, 28-pin, 29-pressure block, 30-tension spring, 31-wear-resistant copper plate, 32-cover plate, 33-sensor plate, 34-sleeve, 35-1st pin, 36-2nd pin, 37-3rd pin, 38-2nd retaining ring, 39-tensioning rod, 40-adjusting fixing seat, 41-limiting seat, 42-2nd copper sliding sleeve, 43-locking tongue. Detailed Implementation

[0020] The technical solution of the present invention is further described below, but the scope of protection is not limited to what is described.

[0021] like Figures 1-3An adaptive high-reliability locking device is shown, comprising a guide rail 1; a locking tongue 43 and a pressure block 29 are arranged sequentially above the guide rail 1, and a long sensing plate 10, an electric push rod 14, a limiting seat 41, a tensioning rod 39, and an adjusting fixing seat 40 are arranged sequentially below the guide rail 1; a proximity switch mounting seat 9 is installed on the long sensing plate 10, and a sleeve 34 is provided on the limiting seat 41; the long sensing plate 10 is connected to the electric push rod 14 through a first pin 35, the electric push rod 14 is connected to the limiting seat 41, the limiting seat 41 is connected to the tensioning rod 39 through a tension spring 30, and the tensioning rod 39 is connected to the adjusting fixing seat 40; a second proximity switch 13 and a first proximity switch 12 are respectively connected to both sides of the proximity switch mounting seat 9, and a wear-resistant copper plate 31 is connected to the lower side of the locking tongue 43.

[0022] The sleeve 34 is connected to the limiting seat 41 by the seventh screw 25 and the second pin 36.

[0023] A first retaining ring 27 and a third pin 37 are provided between the tension spring 30 and the tension rod 39.

[0024] A first wire threaded sleeve 2 is provided between the tensioning rod 39 and the adjusting fixing seat 40.

[0025] One end of the guide rail 1 is provided with a cover plate 32, which is connected to the guide rail 1 by a third washer 20 and a sixth screw 24.

[0026] The locking tongue 43 is connected to the guide rail 1 through the fourth washer 22, the fifth washer 23 and the eighth screw 26, and the bottom of the locking tongue 43 is installed inside the guide rail 1; the bottom sides of the locking tongue 43 are respectively provided with a first copper sliding sleeve 15 and a second copper sliding sleeve 42 between them and the inner wall of the guide rail 1. The first copper sliding sleeve 15 is connected to the locking tongue 43 through the first screw 5, the second wire thread sleeve 4 and the second screw 8, and the second copper sliding sleeve 42 is connected to the locking tongue 43 through the pad 7, the grille 6 and the second retaining ring 38.

[0027] The adjusting mounting base 40 is connected to the guide rail 1 via the adjusting nut 11 and the fifth screw 21.

[0028] The pressure block 29 is connected to the guide rail 1 via pin 28.

[0029] Between the pad 7 and the second retaining ring 38, there are sequentially arranged a roller 3 and a sensing plate 33 connected to the locking tongue 43.

[0030] The wear-resistant copper plate 31 is connected to the locking tongue 43 by the third screw 16, the first washer 17, the second washer 18 and the fourth screw 19.

[0031] Specifically, the present invention has locking self-adaptive properties, and uses tension spring 30 to tighten the entire electric push rod 14, ensuring that the erecting body can be locked even when the angle of the erecting body flipping into position is slightly different.

[0032] Specifically, the electric actuator 14 integrates an overrunning clutch and uses a servo motor. Locking is primarily determined by an absolute encoder, supplemented by current detection; unlocking is determined by dual proximity switches. This dual-detection system improves reliability. The integrated overrunning clutch allows the electric actuator 14 to idle when the output force exceeds the rated value. Even if the electronic control fails, the mechanical system will limit the output force through idling, ensuring high reliability.

[0033] Specifically, the tensioning rod 39 can be made of 40Cr material and hot-dip galvanized, the adjusting nut 11 can be hot-dip galvanized, the limit seat 41, locking tongue 43, guide rail 1, pressure block 29, and adjusting fixing seat 40 can be made of aluminum alloy, and the electric push rod 14 adopts a maintenance-free design, so that the entire locking device is maintenance-free during its life cycle.

[0034] Specifically, this locking device can be used as a locking module for universal installation on different vehicles, resulting in a high degree of standardization.

[0035] The working principle of this invention is as follows:

[0036] When the electric push rod 14 retracts in the pre-locking state, the friction between the guide rail 1 and the limiting seat 41 is less than the tension of the tension spring 30. Therefore, the piston rod end of the electric push rod 14 will not move towards the tension spring 30 under the limiting action of the limiting seat 41. The tension spring 30 can eliminate the gap in the locking device. The cylinder of the electric push rod 14 moves at the same time as the electric push rod 14 retracts. The locking tongue 43 moves along the guide rail 1 under the action of the cylinder of the electric push rod 14, thereby realizing the locking and unlocking of the lifting body by the locking tongue 43.

Claims

1. An adaptive high-reliability locking device, comprising a guide rail (1), characterized in that: The guide rail (1) is provided with a locking tongue (43) and a pressure block (29) in sequence above it, and a long sensing plate (10), an electric push rod (14), a limit seat (41), a tension rod (39) and an adjusting fixing seat (40) in sequence below it; a proximity switch mounting seat (9) is installed on the long sensing plate (10), and a sleeve (34) is provided on the limit seat (41); the long sensing plate (10) is connected to the electric push rod (14) through a first pin (35), the electric push rod (14) is connected to the limit seat (41), the limit seat (41) is connected to the tension rod (39) through a tension spring (30), and the tension rod (39) is connected to the adjusting fixing seat (40); a second proximity switch (13) and a first proximity switch (12) are respectively connected to both sides of the proximity switch mounting seat (9), and a wear-resistant copper plate (31) is connected to the lower side of the locking tongue (43). The latch (43) is connected to the guide rail (1) through the fourth washer (22), the fifth washer (23) and the eighth screw (26), and the bottom of the latch (43) is installed inside the guide rail (1); the bottom sides of the latch (43) are respectively provided with a first copper sliding sleeve (15) and a second copper sliding sleeve (42) between them and the inner wall of the guide rail (1). The first copper sliding sleeve (15) is connected to the latch (43) through the first screw (5), the second wire thread sleeve (4) and the second screw (8), and the second copper sliding sleeve (42) is connected to the latch (43) through the pad (7), the grid (6) and the second retaining ring (38); between the pad (7) and the second retaining ring (38), there are sequentially provided a roller (3) and a sensing plate (33) connected to the latch (43).

2. The adaptive high-reliability locking device as described in claim 1, characterized in that: The sleeve (34) is connected to the limiting seat (41) by the seventh screw (25) and the second pin (36).

3. The adaptive high-reliability locking device as described in claim 1, characterized in that: A first retaining ring (27) and a third pin (37) are provided between the tension spring (30) and the tension rod (39).

4. The adaptive high-reliability locking device as described in claim 1, characterized in that: A first wire threaded sleeve (2) is provided between the tensioning rod (39) and the adjusting fixing seat (40).

5. The adaptive high-reliability locking device as described in claim 1, characterized in that: One end of the guide rail (1) is provided with a cover plate (32), which is connected to the guide rail (1) by a third washer (20) and a sixth screw (24).

6. The adaptive high-reliability locking device as described in claim 1, characterized in that: The adjusting mounting base (40) is connected to the guide rail (1) via the adjusting nut (11) and the fifth screw (21).

7. The adaptive high-reliability locking device as described in claim 1, characterized in that: The pressure block (29) is connected to the guide rail (1) by a pin (28).

8. The adaptive high-reliability locking device as described in claim 1, characterized in that: The wear-resistant copper plate (31) is connected to the latch (43) by a third screw (16), a first washer (17), a second washer (18) and a fourth screw (19).

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