Lifting gas path system

Abstract

The utility model discloses a lifting air path system. The lifting air path system comprises a rack, an operation unit, a lifting air cylinder, a brake unit and at least two balance air cylinders, wherein the operation unit, the lifting air cylinder, the brake unit and the balance air cylinders are installed on the rack. The operation unit can ascend and descend on the rack in the first direction, the operation unit is provided with a waiting station and a working station, and the position of the waiting station is higher than that of the working station; a piston rod of the lifting cylinder is connected with the operation unit through a first floating connection unit; a piston rod of the brake unit is connected with the operation unit through a second floating connection unit, and the brake unit can be locked when the operation unit is located at a waiting station; at least two balance cylinders are located on the two sides of the lifting cylinder and the brake unit, piston rods of the balance cylinders are connected with the operation unit through third floating connection units, and the balance cylinders are used for counteracting the gravity of the operation unit. According to the lifting air path system, it can be guaranteed that the lifting air cylinder is not prone to being damaged, the replacement cost is low under the damaged condition, and the system is more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of production and assembly, in particular to a lifting gas path system. Background Art

[0002] On the production line of automatic engine assembly, many operating units have two positions, one is the low working position and the other is the high waiting position. The operating unit performs assembly work on the engine when it is in the low working position, and gives way to the engine to allow it to pass when it is in the high waiting position.

[0003] When the operating unit moves back and forth between the low working position and the high waiting position, there are usually two mechanisms: one is the motor screw mechanism and the other is the counterweight. For operating units with large weight and impact vibration during work, the motor screw mechanism that drives it to move will wear and affect the positioning accuracy, and the counterweight and pneumatic mechanism also have great risks after long-term work. Utility Model Content

[0004] The utility model provides a lifting gas circuit system, which can ensure that the lifting cylinder is not easily damaged, and has low replacement cost in case of damage, and makes the system more stable.

[0005] In order to achieve the above object, the utility model provides the following technical solutions:

[0006] A lifting air circuit system comprises a frame, an operating unit, a lifting cylinder, a brake unit and at least two balancing cylinders installed on the frame;

[0007] The operating unit can be lifted and lowered along a first direction on the frame, and the operating unit has a waiting station and a working station, and the position of the waiting station is higher than the position of the working station;

[0008] The piston rod of the lifting cylinder is connected to the operating unit via a first floating connection unit, and the lifting cylinder is used to drive the operating unit to move up and down between the waiting station and the working station;

[0009] The piston rod of the brake unit is connected to the operating unit via a second floating connection unit, and the brake unit can be locked when the operating unit is in the waiting position;

[0010] The at least two balancing cylinders are located on both sides of the lifting cylinder and the brake unit, the piston rods of the balancing cylinders are connected to the operating unit via a third floating connection unit, and the balancing cylinders are used to offset the gravity of the operating unit.

[0011] Optionally, it also includes an air source, a precision pressure regulating valve and at least two pilot check valves, the air source is connected to the air inlet of the precision pressure regulating valve, the at least two pilot check valves correspond one-to-one to the at least two balancing cylinders, the air inlet of the pilot check valve is connected to the air outlet of the precision pressure regulating valve, and the air outlet of the pilot check valve is connected to the lower chamber of the corresponding balancing cylinder.

[0012] Optionally, it also includes a medium-pressure three-position five-way solenoid valve, a first throttle valve and a second throttle valve, the air source is connected to the air inlet of the three-position five-way solenoid valve, the first air outlet of the three-position five-way solenoid valve is connected to the air inlet of the first throttle valve, the air outlet of the first throttle valve is connected to the lower chamber of the lifting cylinder, the second air outlet of the three-position five-way solenoid valve is connected to the air inlet of the second throttle valve, and the air outlet of the second throttle valve is connected to the lower chamber of the lifting cylinder.

[0013] Optionally, it also includes a normally open two-position three-way solenoid valve and a quick exhaust valve, the air source is connected to the air inlet of the two-position three-way solenoid valve, the first air outlet of the two-position three-way solenoid valve is connected to the air inlet of the quick exhaust valve and the control port of the pilot check valve, and the air outlet of the quick exhaust valve is connected to the inner cavity of the brake unit.

[0014] Optionally, it further comprises an air source processing unit, and the air source is connected with the air inlet of the precision pressure regulating valve, the air inlet of the two-position three-way solenoid valve, and the air inlet of the three-position five-way solenoid valve through the air source processing unit;

[0015] The air source processing unit includes a manual switch valve, a filter pressure reducing valve, an electric switch valve, a safety slow start valve, and an air distributor block; the air inlet of the manual switch valve is connected to the air source, the air outlet of the manual switch valve is connected to the air inlet of the filter pressure reducing valve, the air outlet of the filter pressure reducing valve is connected to the air inlet of the electric switch valve, the air outlet of the electric switch valve is connected to the air inlet of the safety slow start valve, the air outlet of the safety slow start valve is connected to the air inlet of the air distributor block, the first air outlet of the air distributor block is connected to the air inlet of the precision pressure regulating valve, and the second air outlet of the air distributor block is connected to the air inlet of the two-position three-way solenoid valve and the air inlet of the three-position five-way solenoid valve.

[0016] Optionally, the gas source processing unit further includes a pressure detection unit, and the pressure detection unit is used to detect the air pressure at the air inlet of the gas distribution block.

[0017] Optionally, it further includes a first trigger sensor, a second trigger sensor and a control unit;

[0018] The first trigger sensor is used to detect whether the operating unit is in the waiting position;

[0019] The second trigger sensor is used to detect whether the operating unit is in a working position;

[0020] The control unit is connected to the first trigger sensor, the second trigger sensor, the pressure detection unit, the electrically controlled switch valve, the safety slow start valve, the two-position three-way solenoid valve, the three-position five-way solenoid valve, the precision pressure regulating valve and the quick exhaust valve signal. The control unit is used to control the action of the lifting cylinder, the brake unit and the balancing cylinder according to the signals detected by the first trigger sensor, the second trigger sensor and the pressure detection unit.

[0021] Optionally, the frame has at least one guide rail slider, and the operating unit is slidably connected to the guide rail slider along a first direction.

[0022] Optionally, the frame has two guide rail sliders, and the two guide rail sliders are respectively located on both sides of the lifting cylinder and the brake unit.

[0023] Optionally, the rack further includes an upper limit block and a lower limit block, and the upper limit block and the lower limit block are used to limit the lifting range of the operating unit.

[0024] The lifting air circuit system provided by the embodiment of the utility model includes a frame and an operating unit, a lifting cylinder, a brake unit and two balancing cylinders installed on the frame. The piston rod of the lifting cylinder is connected to the operating unit through a first floating connection unit, and the lifting cylinder can drive the lifting of the operating unit. The piston rod of the brake unit is connected to the operating unit through a second floating connection unit, and the brake unit can be locked when the operating unit is in a waiting position. The lifting cylinder and the brake unit are arranged separately, and the first floating connection unit and the second floating connection unit are added, so that the lifting cylinder is not easily damaged and the replacement cost is low in case of damage. The piston rod of the balancing cylinder is connected to the operating unit through a third floating connection unit. The balancing cylinder can offset the gravity of the operating unit itself. The balancing cylinders on both sides and the lifting cylinder in the middle can evenly share the load, making the system more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the structure of a lifting gas path system provided by an embodiment of the utility model;

[0026] Figure 2 A schematic diagram of the structure of another lifting gas path system provided by an embodiment of the utility model;

[0027] Figure 3 A schematic diagram of the gas path connection of a lifting gas path system provided in an embodiment of the utility model.

[0028] icon:

[0029] 1-frame; 2-operating unit; 3-lifting cylinder; 4-brake unit; 5-balancing cylinder; 6-guide rail slider; 7-air source; 8-precision pressure regulating valve; 9-pilot check valve; 10-three-position five-way solenoid valve; 11-first throttle valve; 12-second throttle valve; 13-two-position three-way solenoid valve; 14-quick exhaust valve; 15-manual switch valve; 16-filter pressure reducing valve; 17-electrically controlled switch valve; 18-safety slow start valve; 19-gas distributor; 20-pressure detection unit; 21-first trigger sensor; 22-second trigger sensor; 23-first floating connection unit; 24-second floating connection unit; 25-third floating connection unit. DETAILED DESCRIPTION

[0030] 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.

[0031] Please refer to Figure 1 and 2 The utility model provides a lifting gas circuit system, including a frame 1 and an operating unit 2, a lifting cylinder 3, a brake unit 4 and at least two balancing cylinders 5 installed on the frame 1;

[0032] The operating unit 2 can be lifted and lowered along a first direction on the frame 1. The operating unit 2 has a waiting position and a working position. The position of the waiting position is higher than that of the working position.

[0033] The piston rod of the lifting cylinder 3 is connected to the operating unit 2 via the first floating connection unit 23, and the lifting cylinder 3 is used to drive the operating unit 2 to move up and down between the waiting station and the working station;

[0034] The piston rod of the brake unit 4 is connected to the operating unit 2 via the second floating connection unit 24, and the brake unit 4 can be locked when the operating unit 2 is in the waiting position;

[0035] At least two balancing cylinders 5 are located on both sides of the lifting cylinder 3 and the brake unit 4 . The piston rods of the balancing cylinders 5 are connected to the operating unit 2 via the third floating connection unit 25 . The balancing cylinders 5 are used to offset the gravity of the operating unit 2 .

[0036] The lifting air circuit system provided by the embodiment of the utility model includes a frame 1 and an operating unit 2, a lifting cylinder 3, a brake unit 4 and two balancing cylinders 5 installed on the frame 1. The piston rod of the lifting cylinder 3 is connected to the operating unit 2 through a first floating connection unit, and the lifting cylinder 3 can drive the lifting of the operating unit 2. The piston rod of the brake unit 4 is connected to the operating unit 2 through a second floating connection unit. The brake unit 4 can be locked when the operating unit 2 is in a waiting position. The lifting cylinder 3 and the brake unit 4 are set separately, and the first floating connection unit and the second floating connection unit are added, which can ensure that the lifting cylinder 3 is not easily damaged and the replacement cost is low in case of damage. The piston rod of the balancing cylinder 5 is connected to the operating unit 2 through a third floating connection unit. The balancing cylinder 5 can offset the gravity of the operating unit 2 itself. The balancing cylinders 5 on both sides and the lifting cylinder 3 in the middle can evenly share the load, making the system more stable.

[0037] Specifically, the brake unit 4 may be a locking cylinder. Figure 1 As shown, the number of the above-mentioned balancing cylinders 5 can be two or more than two, which is not limited here and depends on the actual situation.

[0038] Specifically, the specific structures of the first floating connection unit, the second floating connection unit and the third floating connection unit are not limited here and are determined according to actual conditions.

[0039] In the embodiment of the utility model, the frame 1 may have at least one guide rail slider 6, the operating unit 2 and the guide rail slider 6 may be slidably connected along a first direction, and the guide rail slider 6 may guide the operating unit 2 to move up and down and limit the front and back positions.

[0040] For example, Figure 1 As shown, the frame 1 may have two guide rail sliders 6. The lifting cylinder 3 and the brake unit 4 may be located in the middle of the frame 1, and the guide rail sliders 6 may be located on both sides of the lifting cylinder 3 and the brake unit 4, respectively, which can improve the stability of the system. The specific number of the guide rail sliders 6 is not limited here and can be determined according to actual conditions.

[0041] Specifically, the frame 1 may further include an upper limit block and a lower limit block, which may limit the lifting range of the operating unit 2, and the waiting station and the working station of the operating unit 2 may be located between the upper limit block and the lower limit block.

[0042] In the embodiment of the utility model, Figure 3As shown, the lifting gas circuit system may further include an air source 7, a precision pressure regulating valve 8, and at least two pilot check valves 9. The air source 7 is connected to the air inlet of the precision pressure regulating valve 8. The at least two pilot check valves 9 correspond to at least two balancing cylinders 5 one by one. The air inlet of the pilot check valve 9 is connected to the air outlet of the precision pressure regulating valve 8. The air outlet of the pilot check valve 9 is connected to the lower cavity of the corresponding balancing cylinder 5. The gas can enter the lower cavity of the balancing cylinder 5 through the precision pressure regulating valve 8 and the pilot check valve 9 to balance the weight of the operating unit 2. During the descent of the balancing cylinder 5, the precision pressure regulating valve 8 can maintain a constant pressure, and the operating unit 2 descends smoothly.

[0043] In the embodiment of the utility model, the lifting gas circuit system may further include a medium-pressure three-position five-way solenoid valve 10, a first throttle valve 11 and a second throttle valve 12, wherein the gas source 7 is connected to the air inlet of the three-position five-way solenoid valve 10, the first air outlet of the three-position five-way solenoid valve 10 is connected to the air inlet of the first throttle valve 11, the air outlet of the first throttle valve 11 is connected to the lower cavity of the lifting cylinder 3, the second air outlet of the three-position five-way solenoid valve 10 is connected to the air inlet of the second throttle valve 12, and the air outlet of the second throttle valve 12 is connected to the lower cavity of the lifting cylinder 3. When the air inlet of the three-position five-way solenoid valve 10 is connected to the first air outlet, the gas source 7 can be connected to the lower cavity of the lifting cylinder 3, which can drive the piston rod of the lifting cylinder 3 to rise, and then drive the operating unit 2 to rise. When the air inlet and the second air outlet of the three-position five-way solenoid valve 10 are connected, the air source 7 can be connected to the upper chamber of the lifting cylinder 3, which can drive the piston rod of the lifting cylinder 3 to descend, and then drive the operating unit 2 to descend, so that the lifting unit can drive the operating unit 2 to rise and fall.

[0044] In the embodiment of the utility model, the lifting gas path system further includes a normally open two-position three-way solenoid valve 13 and a quick exhaust valve 14, the gas source 7 is connected with the air inlet of the two-position three-way solenoid valve 13, the first air outlet of the two-position three-way solenoid valve 13 is connected with the air inlet of the quick exhaust valve 14 and the control port of the pilot check valve 9, and the air outlet of the quick exhaust valve 14 is connected with the inner cavity of the brake unit 4. Among them, the gas source 7 can enter the inner cavity of the brake unit 4 through the air inlet and the first air outlet of the two-position three-way solenoid valve 13 and the quick exhaust valve 14, and the brake unit 4 is in a released state. The gas source 7 can also ventilate the control port of the pilot check valve 9 through the two-position three-way solenoid valve 13 to make the pilot check valve 9 reversely conductive. After the two-position three-way solenoid valve 13 is reversed, the quick exhaust valve 14 exhausts air, the brake unit 4 can be automatically locked, and the operating unit 2 can be stopped, which can prevent the operating unit 2 from falling rapidly from a high place. For example, when the system is out of gas or power, the two-position three-way solenoid valve 13 can be reversed, and the brake unit 4 can be automatically locked, which can prevent the operating unit 2 from falling rapidly from a high place, thereby playing a safety protection role.

[0045] In the embodiment of the utility model, the lifting gas path system also includes an air source processing unit, and the air source 7 is connected with the air inlet of the precision pressure regulating valve 8, the air inlet of the two-position three-way solenoid valve 13, and the air inlet of the three-position five-way solenoid valve 10 through the air source processing unit; wherein the air source processing unit includes a manual switch valve 15, a filter pressure reducing valve 16, an electric control switch valve 17, a safety slow start valve 18, and an air distributor 19; the air inlet of the manual switch valve 15 is connected with the air source 7, and the air outlet of the manual switch valve 15 is connected with the air source 7. The filter pressure reducing valve 16 is connected to the air inlet, the air outlet of the filter pressure reducing valve 16 is connected to the air inlet of the electric control switch valve 17, the air outlet of the electric control switch valve 17 is connected to the air inlet of the safety slow start valve 18, the air outlet of the safety slow start valve 18 is connected to the air inlet of the gas distributor block 19, the first air outlet of the gas distributor block 19 is connected to the air inlet of the precision pressure regulating valve 8, and the second air outlet of the gas distributor block 19 is connected to the air inlet of the two-position three-way solenoid valve 13 and the air inlet of the three-position five-way solenoid valve 10. The manual switch valve 15 can open and close the gas circuit manually; the filter pressure reducing valve 16 is used to have the functions of both the filter valve and the pressure reducing valve, and can better process the air flow into the gas source processor; the electric control switch valve 17 can realize automatic opening and closing of the gas circuit. When the system is powered off, the electric control switch valve 17 is in a closed state, the gas in the gas circuit is cut off, and the system enters a gas cut-off state; the safety slow start valve 18 is used to prevent the operating unit 2 from rising rapidly when the gas circuit is ventilated.

[0046] Specifically, the gas source processing unit further includes a pressure detection unit 20 , which is used to detect the air pressure at the air inlet of the gas distribution block 19 , and can detect whether there is gas flowing through the gas distribution block 19 .

[0047] In the embodiment of the utility model, Figure 2 As shown, the lifting and lowering air circuit system further includes a first trigger sensor 21, a second trigger sensor 22 and a control unit; wherein the first trigger sensor 21 is used to detect whether the operating unit 2 is in the waiting position; the second trigger sensor 22 is used to detect whether the operating unit 2 is in the working position; the control unit is connected to the first trigger sensor 21, the second trigger sensor 22, the pressure detection unit 20, the electric control switch valve 17, the safety slow start valve 18, the two-position three-way solenoid valve 13, the three-position five-way solenoid valve 10, the precision pressure regulating valve 8 and the quick exhaust valve 14 signal, and the control unit is used to control the action of the lifting cylinder 3, the brake unit 4 and the balancing cylinder 5 according to the signals detected by the first trigger sensor 21, the second trigger sensor 22 and the pressure detection unit 20, that is, to control the action of the electric control switch valve 17, the safety slow start valve 18, the two-position three-way solenoid valve 13, the three-position five-way solenoid valve 10, the precision pressure regulating valve 8 and the quick exhaust valve 14.

[0048] In the embodiment of the utility model, during the lifting and lowering process of the operating unit 2, the specific working process of the lifting and lowering gas circuit system can be:

[0049] When the operating unit 2 rises, the gas enters the lower chamber of the balancing cylinder 5 through the precision pressure regulating valve 8 and the pilot check valve 9 to balance the weight of the operating unit 2; the gas enters the brake unit 4 through the two-position three-way solenoid valve 13 and the quick exhaust valve 14, and the brake unit 4 is in a released state; the gas enters the lower chamber of the lifting cylinder 3 through the three-position five-way solenoid valve 10 and the exhaust throttle valve to push the operating unit 2 up. At this time, the piston rods of the balancing cylinder 5, the lifting cylinder 3, and the brake unit 4 extend at the same time.

[0050] When the operating unit 2 descends, the three-position five-way solenoid valve 10 switches direction, and the gas enters the upper chamber of the lifting cylinder 3 through the three-position five-way solenoid valve 10 and the exhaust throttle valve, pushing the operating unit 2 down. At this time, the two-position three-way solenoid valve 13 does not switch direction, and the pilot check valve 9 is ventilated through the two-position three-way solenoid valve 13 to make it conductive, the piston rod of the balancing cylinder 5 descends, and the air pressure in its lower chamber remains unchanged, and the excess gas is discharged through the exhaust port of the precision pressure regulating valve 8. At this time, the piston rod of the balancing cylinder 5, the piston rod of the lifting cylinder 3, and the piston rod of the brake unit 4 are retracted at the same time.

[0051] When the pressure detection unit 20 detects that the gas source 7 is cut off: the three-position five-way solenoid valve 10 is triggered to enter the neutral holding state, and the piston in the lifting cylinder 3 stops moving; the pilot check valve 9 is in the cut-off state, the piston of the balance cylinder 5 stops moving, and the gas in the lower chamber is maintained; the two-position three-way solenoid valve 13 is reversed, and the brake unit 4 is automatically locked. At this time, the operating unit 2 is in a stopped state, ensuring that the operating unit 2 does not drop rapidly from a high place when the system is cut off.

[0052] When the system is powered off, the electric control switch valve 17 is in a closed state, the gas in the gas path is cut off, and the system enters a gas-off state. At this time, the operating unit 2 is in a stopped state, ensuring that the operating unit 2 does not fall rapidly from a high place when the system is powered off, effectively preventing the load from falling, and playing a safety protection role.

[0053] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A lifting gas path system, characterized in that: It includes a frame and an operating unit, a lifting cylinder, a brake unit and at least two balancing cylinders installed on the frame; The operating unit can be lifted and lowered along a first direction on the frame, and the operating unit has a waiting station and a working station, and the position of the waiting station is higher than the position of the working station; The piston rod of the lifting cylinder is connected to the operating unit via a first floating connection unit, and the lifting cylinder is used to drive the operating unit to move up and down between the waiting station and the working station; The piston rod of the brake unit is connected to the operating unit via a second floating connection unit, and the brake unit can be locked when the operating unit is in the waiting position; The at least two balancing cylinders are located on both sides of the lifting cylinder and the brake unit, the piston rods of the balancing cylinders are connected to the operating unit via a third floating connection unit, and the balancing cylinders are used to offset the gravity of the operating unit.

2. The lifting gas path system according to claim 1, characterized in that: It also includes an air source, a precision pressure regulating valve and at least two pilot check valves, the air source is connected to the air inlet of the precision pressure regulating valve, the at least two pilot check valves correspond one-to-one to the at least two balancing cylinders, the air inlet of the pilot check valve is connected to the air outlet of the precision pressure regulating valve, and the air outlet of the pilot check valve is connected to the lower chamber of the corresponding balancing cylinder.

3. The lifting gas path system according to claim 2, characterized in that: It also includes a medium-pressure three-position five-way solenoid valve, a first throttle valve and a second throttle valve, the air source is connected to the air inlet of the three-position five-way solenoid valve, the first air outlet of the three-position five-way solenoid valve is connected to the air inlet of the first throttle valve, the air outlet of the first throttle valve is connected to the lower chamber of the lifting cylinder, the second air outlet of the three-position five-way solenoid valve is connected to the air inlet of the second throttle valve, and the air outlet of the second throttle valve is connected to the lower chamber of the lifting cylinder.

4. The lifting gas path system according to claim 3, characterized in that: It also includes a normally open two-position three-way solenoid valve and a quick exhaust valve, the air source is connected to the air inlet of the two-position three-way solenoid valve, the first air outlet of the two-position three-way solenoid valve is connected to the air inlet of the quick exhaust valve and the control port of the pilot check valve, and the air outlet of the quick exhaust valve is connected to the inner cavity of the brake unit.

5. The lifting gas path system according to claim 4, characterized in that: It also includes an air source processing unit, through which the air source is connected to the air inlet of the precision pressure regulating valve, the air inlet of the two-position three-way solenoid valve, and the air inlet of the three-position five-way solenoid valve; The air source processing unit includes a manual switch valve, a filter pressure reducing valve, an electric switch valve, a safety slow start valve, and an air distributor block; the air inlet of the manual switch valve is connected to the air source, the air outlet of the manual switch valve is connected to the air inlet of the filter pressure reducing valve, the air outlet of the filter pressure reducing valve is connected to the air inlet of the electric switch valve, the air outlet of the electric switch valve is connected to the air inlet of the safety slow start valve, the air outlet of the safety slow start valve is connected to the air inlet of the air distributor block, the first air outlet of the air distributor block is connected to the air inlet of the precision pressure regulating valve, and the second air outlet of the air distributor block is connected to the air inlet of the two-position three-way solenoid valve and the air inlet of the three-position five-way solenoid valve.

6. The lifting gas path system according to claim 5, characterized in that: The gas source processing unit further comprises a pressure detection unit, and the pressure detection unit is used to detect the air pressure at the air inlet of the gas distribution block.

7. The lifting gas path system according to claim 6, characterized in that: Also includes a first trigger sensor, a second trigger sensor and a control unit; The first trigger sensor is used to detect whether the operating unit is in the waiting position; The second trigger sensor is used to detect whether the operating unit is in a working position; The control unit is connected to the first trigger sensor, the second trigger sensor, the pressure detection unit, the electrically controlled switch valve, the safety slow start valve, the two-position three-way solenoid valve, the three-position five-way solenoid valve, the precision pressure regulating valve and the quick exhaust valve signal. The control unit is used to control the action of the lifting cylinder, the brake unit and the balancing cylinder according to the signals detected by the first trigger sensor, the second trigger sensor and the pressure detection unit.

8. The lifting gas path system according to any one of claims 1 to 7, characterized in that: The frame has at least one guide rail slider, and the operating unit is slidably connected to the guide rail slider along a first direction.

9. The lifting gas path system according to claim 8, characterized in that: The frame has two guide rail slide blocks, and the two guide rail slide blocks are respectively located on both sides of the lifting cylinder and the brake unit.

10. The lifting gas path system according to claim 8, characterized in that: The frame further comprises an upper limit block and a lower limit block, wherein the upper limit block and the lower limit block are used to limit the lifting range of the operating unit.

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