Connecting rod mechanism and device with emergency protection function

Abstract

The utility model discloses a connecting rod mechanism and device with an emergency protection function, the connecting rod mechanism comprises a connecting rod adjusting mechanism, the connecting rod adjusting mechanism comprises an air cylinder, the rod end of the air cylinder is connected with a mechanical adjusting cylinder, and a mechanical adjusting shaft is inserted in the mechanical adjusting cylinder; the pneumatic control system comprises an air pump, one path of the air pump is connected to an electromagnetic on-off valve through a tee joint, the other path of the air pump is connected to an air storage tank through a one-way valve, and an air outlet of the air storage tank is connected with air ports in the two ends of the air cylinder through an electromagnetic reversing valve. The connecting rod mechanism replaces a conventional connecting rod so that the connecting rod mechanism can be a pure rigid connecting rod mechanism in the normal state, the connecting rod immediately extends to the designated state when power is off, the emergency braking action of the brake pedal is achieved, and then the safety of the automatic driving robot is improved; and the risk of braking failure of the automatic driving robot caused by power failure or abnormal conditions is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to automatic driving robot technical field especially relates to a connecting rod mechanism and device with emergency protection function. BACKGROUND

[0002] With the rapid development of automatic driving technology, steering robot, pedal robot, gear shifting robot and other products gradually develop and grow, inject new vitality for automatic driving and automobile test industry, upgrade from traditional manual driving test mode to automatic driving test mode. At the same time, automatic driving safety level attracts more and more attention. Among them, when automatic driving is in power failure or abnormal condition, it is still necessary to keep effective emergency braking action becomes very critical, and the brake pedal robot power failure or abnormal condition caused by braking action failure is an important risk point. SUMMARY

[0003] The main purpose of the utility model is to provide a connecting rod mechanism and device with emergency protection function, aiming at solving the existing technical problems.

[0004] To achieve the above purpose, the utility model provides a connecting rod mechanism with emergency protection function, which comprises:

[0005] The connecting rod adjusting mechanism comprises a cylinder, the rod end of the cylinder is connected with a mechanical adjusting cylinder, and a mechanical adjusting shaft is inserted in the mechanical adjusting cylinder.

[0006] The pneumatic control system comprises an air pump, the air pump is connected to an electromagnetic on-off valve through a three-way branch, another branch is connected to an air storage tank through a check valve, and the air outlet of the air storage tank is connected to the gas ports at both ends of the cylinder through an electromagnetic reversing valve.

[0007] Further, it further comprises a gas rod limiting shaft arranged in parallel with the cylinder, the gas rod limiting shaft is sequentially arranged in a gas rod limiting plate at the rod end of the cylinder and a gas rod limiting fixed plate on the mechanical adjusting cylinder, one end of the gas rod limiting shaft is fixedly connected with the gas rod limiting fixed plate through a nut, and the other end is slidably arranged along the gas rod limiting plate.

[0008] Further, the sliding end of the gas rod limiting shaft is provided with a light shaft fixing ring for adjusting the sliding distance of the gas rod limiting shaft.

[0009] Further, it further comprises a tension and pressure sensor connected with the non-rod end of the cylinder through a cylinder adapter for detecting the thrust provided by the cylinder.

[0010] Further, it further comprises an air pressure sensor connected with the air storage tank for detecting the air pressure in the air storage tank.

[0011] Further, a filter is further included, which is arranged at the air pump outlet.

[0012] Further, a groove is arranged on the mechanical adjusting cylinder, and the air rod limiting fixing plate is fixed to the groove through the air rod limiting fixing member.

[0013] A protection device applied to a pedal robot, comprising the connecting rod mechanism with the emergency protection function, the non-rod end of the air cylinder is connected with the fish eye ball head, the brake swing arm is arranged on the pedal robot, and the mechanical adjusting shaft end is connected with the pedal clamping mechanism.

[0014] The beneficial effects of the utility model are reflected in:

[0015] The connecting rod mechanism in the utility model replaces the conventional connecting rod and can realize the pure rigid connecting rod mechanism in the normal state, and the connecting rod is immediately elongated to the specified state when power failure or abnormality occurs, so that the brake pedal emergency braking is realized, and the safety of the automatic driving robot is improved, and the risk of brake failure caused by power failure or abnormality is solved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the connecting rod adjusting mechanism of the utility model;

[0017] Figure 2 It is a structural schematic view of the connecting rod adjusting mechanism of the utility model Figure 1 It is a structural sectional view schematic view;

[0018] Figure 3 It is a schematic view of the pneumatic control system of the utility model;

[0019] Figure 4 It is a schematic view of the pneumatic control system principle of the utility model;

[0020] Figure 5 It is an application scene view of the connecting rod adjusting mechanism of the utility model;

[0021] BRIEF DESCRIPTION OF DRAWINGS:

[0022] 1, connecting rod adjusting mechanism; 11, air cylinder; 111, air cylinder adapter; 12, mechanical adjusting cylinder; 13, mechanical adjusting shaft; 131, locking nut; 14, air rod limiting shaft; 141, nut; 15, air rod limiting plate; 16, air rod limiting fixing plate; 161, air rod limiting fixing member; 17, optical axis fixing ring; 18, tension and pressure sensor; 2, pneumatic control system; 21, air pump; 22, electromagnetic on-off valve; 23, check valve; 24, air tank; 25, electromagnetic reversing valve; 26, air pressure sensor; 27, filter; 28, controller; 3, fish eye ball head; 4, brake swing arm; 5, pedal robot; 6, pedal clamping mechanism. DETAILED DESCRIPTION

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0024] Please see Figures 1-4 This utility model provides a linkage mechanism with an emergency protection function, comprising:

[0025] The linkage adjustment mechanism 1 includes a cylinder 11, the rod end of the cylinder 11 is connected to a mechanical adjustment cylinder 12, and a mechanical adjustment shaft 13 is inserted into the mechanical adjustment cylinder 12 and locked by a locking nut 131.

[0026] The pneumatic control system 2 includes an air pump 21. One of the air pump 21 is connected to the solenoid on / off valve 22 via a three-way valve, and the other is connected to the air tank 24 via a one-way valve 23. The air outlet of the air tank 24 is connected to the two air ports of the cylinder 11 via a solenoid reversing valve 25.

[0027] The working process of this linkage mechanism is as follows: When energized, the air pump 21 is powered on, the solenoid on / off valve 22 is energized to the left position, and the solenoid directional valve 25 is energized to the left position. High-pressure gas enters the rod end chamber of cylinder 11 through the check valve 23 and the air tank 24. Gas in the non-rod end chamber is discharged into the atmosphere, and the rod stroke is at its minimum. Once the pressure sensor 26 detects that the pressure in the air tank 24 has reached the predetermined range, the air pump 21 and the solenoid on / off valve 22 are de-energized, maintaining high-pressure gas in the air tank 24. The rod maintains its minimum stroke, the solenoid on / off valve 22 is de-energized to the right position, and the air pump 21 is depressurized. When the pressure sensor 26 detects insufficient pressure, the air pump 21 and the solenoid valve are energized to replenish high-pressure gas to the predetermined range. In the event of an accidental power failure, the solenoid directional valve 25 is in the right position, high-pressure gas enters the non-rod end chamber, gas in the cylinder rod end chamber is discharged into the atmosphere, and the rod extends to its preset maximum stroke. After power is restored, and after confirming safety, the entire control and power supply system is manually reset.

[0028] This linkage mechanism is applicable to any situation where the relevant structure is difficult to operate effectively under emergency power failure conditions.

[0029] In one embodiment, the cylinder 11 is further provided with a rod limiting shaft 14 that is parallel to the cylinder 11. The rod limiting shaft 14 passes through the rod limiting plate 15 located at the rod end of the cylinder 11 and the rod limiting fixing plate 16 located on the mechanical adjusting cylinder 12 in sequence. One end of the rod limiting shaft 14 is fixedly connected to the rod limiting fixing plate 16 by a nut 141, and the other end is slidably disposed along the rod limiting plate 15.

[0030] In this embodiment, the extension distance of the cylinder rod end can be adjusted by setting the air rod limiting shaft 14, thereby adapting to different installation requirements.

[0031] In one embodiment, the sliding end of the pneumatic rod limiting shaft 14 is provided with a light axis fixing ring 17 for adjusting the sliding distance of the pneumatic rod limiting shaft 14. This embodiment is configured such that by adjusting the position of the light axis fixing ring 17 on the pneumatic rod limiting shaft 14, the maximum extension amount of the pneumatic rod can be adjusted.

[0032] In one embodiment, a tension / compression sensor 18 is also included, which is connected to the non-rod end of the cylinder 11 via a cylinder adapter 111, for detecting the thrust provided by the cylinder 11.

[0033] In one embodiment, a pressure sensor 26 is also included, connected to the gas tank 24, for detecting the gas pressure inside the gas tank 24. In this embodiment, when the pressure sensor detects that the gas pressure in the gas tank 24 has reached a predetermined range, the air pump 21 and the solenoid valve 22 are de-energized, maintaining high-pressure gas inside the gas tank 24. The air rod maintains its minimum stroke, the solenoid valve 22 is de-energized and operates in the right position, and the air pump 21 is depressurized. When the pressure sensor 26 detects insufficient gas pressure, the air pump 21 and the solenoid valve are energized to replenish high-pressure gas to the predetermined range.

[0034] In one embodiment, a filter 27 is also included, which is disposed at the air outlet of the air pump 21. This configuration in this embodiment is used to filter gas impurities and improve the service life of the entire gas circuit components.

[0035] In one embodiment, the mechanical adjusting cylinder 12 has a groove, and the pneumatic rod limiting fixing plate 16 is fixed to the groove by the pneumatic rod limiting fixing member 161. This configuration in this embodiment facilitates the positioning of the pneumatic rod limiting fixing plate 16 during installation and ensures the stability of its position after positioning, preventing displacement or loosening.

[0036] Additionally, it should be noted that the power supply and signal feedback of the solenoid directional valve 25, solenoid on / off valve 22, air pump 21, air pressure sensor 26, and tension / compression sensor 18 are connected to the controller 28.

[0037] Please see Figure 5The present invention also provides a protective device for a pedal robot, including a linkage mechanism with emergency protection function as described above. The non-rod end of the cylinder 11 is connected to the brake swing arm 4 through the fisheye head 3. The brake swing arm 4 is mounted on the pedal robot 5. The end of the mechanical adjustment shaft 13 is connected to the pedal clamping mechanism 6.

[0038] When this protection device is working normally, the air pump 21 is energized, the solenoid on / off valve 22 is energized and operates in the left position, and the solenoid reversing valve 25 is energized and operates in the left position. High-pressure gas enters the rod end chamber of cylinder 11 through filter 27, check valve 23, and air tank 24. Gas in the non-rod end chamber is discharged into the atmosphere. The rod stroke is at its minimum value. When the pressure sensor detects that the air pressure in the air tank 24 has reached the predetermined range, the air pump 21 and the solenoid on / off valve 22 are de-energized. High-pressure gas is maintained in the air tank 24. The rod maintains its minimum stroke. The solenoid on / off valve 22 is de-energized and operates in the right position. The air pump 21 is depressurized. When the pressure sensor 26 detects that the air pressure is insufficient, the air pump 21 and the solenoid on / off valve 22 are energized to replenish the high-pressure gas to the predetermined range.

[0039] In the event of an unexpected power outage, the electromagnetic reversing valve 25 operates in the right position, allowing high-pressure gas to enter the non-pneumatic rod end chamber, while the gas in the cylinder rod end chamber is discharged into the atmosphere. The pneumatic rod extends to its preset maximum stroke, pushing the pedal clamping mechanism 6 to lock the pedal, thus achieving emergency braking and improving the safety of the driving robot. This eliminates the risk of braking failure due to power outages or abnormal conditions. After power is restored, the entire control and power supply system can be manually reset after confirming safety.

[0040] It should be noted that if the embodiments of this utility model involve directional indicators such as up, down, left, right, front, back, etc., the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indicators will also change accordingly.

[0041] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied. Furthermore, "multiple" refers to two or more. Moreover, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A linkage mechanism with an emergency protection function, characterized in that... ,include: The linkage adjustment mechanism (1) includes a cylinder (11), the rod end of the cylinder (11) is connected to a mechanical adjustment cylinder (12), and a mechanical adjustment shaft (13) is inserted inside the mechanical adjustment cylinder (12); The pneumatic control system (2) includes an air pump (21), which is connected to an electromagnetic on / off valve (22) via a three-way valve, and to an air tank (24) via a one-way valve (23). The air outlet of the air tank (24) is connected to the two ends of the cylinder (11) via an electromagnetic reversing valve (25).

2. The linkage mechanism with emergency protection function as described in claim 1, characterized in that: It also includes a rod limiting shaft (14) arranged parallel to the cylinder (11). The rod limiting shaft (14) passes through the rod limiting plate (15) located at the rod end of the cylinder (11) and the rod limiting fixing plate (16) located on the mechanical adjusting cylinder (12) in sequence. One end of the rod limiting shaft (14) is fixedly connected to the rod limiting fixing plate (16) by a nut (141), and the other end is slidably arranged along the rod limiting plate (15).

3. A linkage mechanism with emergency protection function as described in claim 2, characterized in that: The sliding end of the pneumatic rod limiting shaft (14) is provided with a light axis fixing ring (17) for adjusting the sliding distance of the pneumatic rod limiting shaft (14).

4. A linkage mechanism with emergency protection function as described in claim 1, characterized in that: It also includes a tension / compression sensor (18), which is connected to the non-rod end of the cylinder (11) via a cylinder adapter (111) for detecting the thrust provided by the cylinder (11).

5. A linkage mechanism with emergency protection function as described in claim 1, characterized in that: It also includes a pressure sensor (26), which is connected to the gas storage tank (24) and is used to detect the pressure inside the gas storage tank (24).

6. A linkage mechanism with emergency protection function as described in claim 1, characterized in that: It also includes a filter (27) located at the outlet of the air pump (21).

7. A linkage mechanism with emergency protection function as described in claim 2, characterized in that: The mechanical adjusting cylinder (12) has a groove, and the gas rod limiting fixing plate (16) is fixed to the groove by the gas rod limiting fixing part (161).

8. A protective device for a pedal robot, characterized in that: The linkage mechanism with emergency protection function as described in any one of claims 1-7 is provided, wherein the non-rod end of the cylinder (11) is connected to the brake swing arm (4) through the fisheye head (3), the brake swing arm (4) is provided on the pedal robot (5), and the end of the mechanical adjustment shaft (13) is connected to the pedal clamping mechanism (6).

Images