A lifting mechanism for fire fighting robot

Abstract

The utility model discloses a lifting mechanism for a fire-fighting robot, including a mobile base, a hydraulic cylinder and a lifting frame, wherein the lifting frame is slidably mounted on the top of the mobile base, the hydraulic cylinder is mounted on the top of the mobile base, the top end of the hydraulic cylinder is mounted on the bottom of the lifting frame, the top of the mobile base is fixedly mounted with evenly distributed mounting tubes, the interior of the mounting tubes is slidably mounted with connecting shafts, the top end of the connecting shaft passes through the mounting tubes and is connected to the bottom of the lifting frame. The utility model can play a guiding role when the lifting frame is lifted by setting the mounting tubes and the connecting shafts, and can change the air pressure inside the mounting tubes in conjunction with the air pump and the air pipe so that the connecting shaft has an upward movement tendency, can reduce the load of the hydraulic cylinder when lifting, and improve the stability of the lifting frame, and when the hydraulic cylinder vibrates or the pressure relief is out of control during operation, the air pressure can play a certain buffering role, and can avoid vibration of the lifting frame and the fire extinguishing mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of fire-fighting robots, in particular to a lifting mechanism for a fire-fighting robot. Background Art

[0002] As a type of special robot, firefighting robots are playing an increasingly important role in firefighting and emergency rescue. Firefighting robots can replace firefighting and rescue personnel to enter the scenes of dangerous disasters such as flammable and explosive, toxic, hypoxic, and thick smoke to collect, process, and feedback data, effectively solving the problems of personal safety and insufficient data information collection faced by firefighters in the above-mentioned places. On-site commanders can make scientific judgments on the disaster situation in a timely manner based on their feedback results, and make correct and reasonable decisions on disaster accident site work.

[0003] However, the lifting mechanism of the fire-fighting robot currently on the market lacks good pressure-bearing capacity when in use. As a result, the lifting mechanism will be unstable during the lifting movement, resulting in reduced accuracy of the spray fire-fighting mechanism, which in turn affects the fire-fighting effect.

[0004] Patent application number CN202021988281.3 A lifting mechanism for a fire-fighting robot solves the problem that the lifting mechanisms for fire-fighting robots on the market currently lack good bearing pressure when in use, have poor stability, are prone to shaking, and result in inaccurate position of the spray fire-fighting mechanism, affecting the fire-fighting effect, and when driving on unstable roads, the gravity distribution is uneven, the center of gravity is unstable, and it is easy to overturn. The lifting mechanism comprises a base, a driving motor is installed in the inner cavity of the base, a movable disk is installed at the output end of the driving motor, a positioning rod is fixed at the bottom of the movable disk, a pressure-bearing ball is installed in the middle of the positioning rod, and a lifting frame is installed on the top of the movable disk; the utility model has good bearing pressure, good stability, is not easy to shake, the position of the spray fire-fighting mechanism is accurately adjusted, the fire-fighting effect is good, the center of gravity of the top can be adjusted according to the actual situation of the road surface, the gravity distribution is uniform, the center of gravity is stable, and the fire-fighting robot is not easy to overturn.

[0005] This structure uses multiple sets of springs to improve the robot's pressure-bearing capacity, but in actual use, the lifting of the fire-fighting robot cannot achieve a buffering effect through hard jacking. The spring characteristics will produce repeated contraction, making the fire-fighting robot more unstable. The lifting frame needs to carry the fire-fighting mechanism and continuously lift and lower. If the lifting frame tilts, it will affect the accuracy of the fire-fighting mechanism. Long-term abnormalities will affect the operation of the equipment. Therefore, professionals in this field provide a lifting mechanism for a fire-fighting robot to solve the above-mentioned problems. Utility Model Content

[0006] In view of the problems existing in the prior art, the purpose of the utility model is to provide a lifting mechanism for a fire-fighting robot, which can reduce the load of the hydraulic cylinder during lifting and improve the stability of the lifting frame. At the same time, by setting an infrared transmitter affected by gravity and a fixed infrared receiver, the stability of the lifting frame can be monitored.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A lifting mechanism for a fire-fighting robot comprises a mobile base, a hydraulic cylinder and a lifting frame, wherein the lifting frame is slidably mounted on the top of the mobile base, the hydraulic cylinder is mounted on the top of the mobile base, the top end of the hydraulic cylinder is mounted on the bottom of the lifting frame, the top of the mobile base is fixedly mounted with evenly distributed mounting tubes, a connecting shaft is slidably mounted inside the mounting tube, the top end of the connecting shaft penetrates the mounting tube and is connected to the bottom of the lifting frame, an air pipe is connected inside the mounting tube, an air pressure sensor is mounted on the inner wall of the mounting tube, an infrared receiver is fixedly mounted on the bottom of the lifting frame, a mounting seat is fixedly mounted on the bottom of the lifting frame, a circular groove is provided inside the mounting seat, a ball sleeve is movably mounted inside the circular groove, a gravity plate is fixedly connected to the bottom of the ball sleeve, an infrared transmitter is fixedly mounted on the gravity plate, the infrared transmitter is located on the left side of the infrared receiver, a processor and a signal transmission module are integrated inside the lifting frame, and the signal transmission module, the infrared receiver and the air pressure sensor are all connected to the processor signal.

[0009] As a further description of the above technical solution: a buzzer is installed on the lifting frame, and the buzzer is connected to the processor signal.

[0010] As a further description of the above technical solution: the outer ring of the connecting shaft is fixedly connected with a sealing ring, and the sealing ring is slidably connected to the inner wall of the mounting cylinder.

[0011] As a further description of the above technical solution: a counterweight block is fixedly installed on the left side of the gravity plate, and the counterweight block is made of metal material.

[0012] As a further description of the above technical solution: an expansion groove is provided at the bottom of the mounting seat, and the interior of the expansion groove is connected to the interior of the circular groove.

[0013] As a further description of the above technical solution: a filter screen is installed on the inner wall of the installation cylinder, and the air pipe is located at the bottom of the filter screen.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] In the utility model, a mounting tube and a connecting shaft are provided to play a guiding role when the lifting frame is lifted or lowered, and the air pump and the air pipe can be used to change the air pressure inside the mounting tube so that the connecting shaft has an upward movement tendency, which can reduce the load of the hydraulic cylinder during lifting and improve the stability of the lifting frame. When the hydraulic cylinder vibrates or the pressure is released out of control during operation, the air pressure can play a certain buffering role, thereby avoiding vibration of the lifting frame and the fire extinguishing mechanism. At the same time, an infrared transmitter affected by gravity and a fixed infrared receiver are provided to monitor the stability of the lifting frame, and a signal can be transmitted in time when the lifting frame is tilted, thereby avoiding the lifting frame tilting, resulting in inaccurate adjustment of the fire extinguishing mechanism, or long-term abnormality, resulting in damage to the fire-fighting robot and making it unusable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view cross-sectional structural schematic diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal three-dimensional structure of the installation tube of the utility model;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the gravity plate of the utility model;

[0019] Figure 4 It is a schematic diagram of the principle of the utility model.

[0020] Description of the numbers in the figure:

[0021] 1. Mobile base; 2. Hydraulic cylinder; 3. Lifting frame; 4. Mounting tube; 5. Connecting shaft; 6. Air pipe; 7. Air pressure sensor; 8. Infrared receiver; 9. Mounting seat; 10. Round groove; 11. Ball sleeve; 12. Gravity plate; 13. Infrared transmitter; 14. Processor; 15. Signal transmission module; 16. Buzzer; 17. Sealing ring; 18. Counterweight block; 19. Expansion slot; 20. Filter. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention;

[0023] See also Figures 1 to 4In the utility model, a lifting mechanism for a fire-fighting robot comprises a mobile base 1, a hydraulic cylinder 2 and a lifting frame 3. The lifting frame 3 is slidably mounted on the top of the mobile base 1. The hydraulic cylinder 2 is mounted on the top of the mobile base 1. The top of the hydraulic cylinder 2 is mounted on the bottom of the lifting frame 3. The top of the mobile base 1 is fixedly mounted with evenly distributed mounting tubes 4. The interior of the mounting tube 4 is slidably mounted with a connecting shaft 5. The top of the connecting shaft 5 penetrates the mounting tube 4 and is connected to the bottom of the lifting frame 3. The interior of the mounting tube 4 is connected with an air pipe 6. The inner wall of the mounting tube 4 is mounted with an air pressure sensor 7. An infrared receiver 8 is fixedly installed at the bottom of the lifting frame 3, a mounting seat 9 is fixedly installed at the bottom of the lifting frame 3, a circular groove 10 is opened inside the mounting seat 9, a sleeve ball 11 is movably installed inside the circular groove 10, a gravity plate 12 is fixedly connected to the bottom of the sleeve ball 11, an infrared transmitter 13 is fixedly installed on the gravity plate 12, and the infrared transmitter 13 is located on the left side of the infrared receiver 8. A processor 14 and a signal transmission module 15 are integrated inside the lifting frame 3, and the signal transmission module 15, the infrared receiver 8 and the air pressure sensor 7 are all connected to the processor 14 signal.

[0024] An expansion groove 19 is formed at the bottom of the mounting seat 9 , and the interior of the expansion groove 19 is communicated with the interior of the circular groove 10 .

[0025] A plurality of air pumps are installed on the top of the mobile base 1, and the air pumps are connected with the air pipe 6 to supply air to the inside of the installation tube 4, and the processor 14 can obtain the signal sent by the operator to the hydraulic cylinder 2. When in use, the operator controls the plurality of hydraulic cylinders 2 to operate simultaneously, and the hydraulic cylinder 2 lifts the lifting frame 3 upward, and the fire extinguishing mechanism installed on the top of the lifting frame 3 begins to lift. At this time, the processor 14 controls the air pump to work, and the air pump inflates the inside of the installation tube 4 through the inside of the air pipe 6, so that the air pressure inside the installation tube 4 is enhanced, and the connecting shaft 5 will also move inside the installation tube 4 when the lifting frame 3 moves vertically. At this time, the connecting shaft 5 is pushed upward by the air pressure, thereby playing a certain auxiliary role in the lifting of the lifting frame 3. The air pressure sensor 7 will monitor the internal pressure of the installation tube 4 in real time and transmit it to the processor 14. The processor 14 sets the air pressure value to match the hydraulic cylinder 2, that is, the air pump stops operating after the hydraulic cylinder 2 remains stable, and the plurality of connecting shafts 5 play an auxiliary supporting role for the lifting frame 3. At the same time, if the hydraulic cylinder 2 vibrates or When the pressure relief is out of control, the lifting frame 3 is pressed downward, and the gas inside the installation tube 4 can play a certain buffering role to prevent the lifting frame 3 and the fire extinguishing mechanism from vibrating. At the same time, during the use of the lifting frame 3, if the lifting frame 3 always remains stable, the gravity plate 12 under the action of gravity remains vertically downward, so that the infrared transmitter 13 emits infrared rays to the right, and the infrared receiver 8 receives the signal, the processor 14 transmits the state of the lifting frame 3 to the operator through the signal transmission module 15. Through the coordinated use of the sleeve ball 11 and the circular groove 10, the gravity plate 12 can be tilted in any direction. That is, if the lifting frame 3 is tilted and unstable during the lifting process, the gravity plate 12 remains vertical and the infrared receiver 8 tilts with the lifting frame 3, so that the infrared receiver 8 cannot receive the signal, and the processor 14 transmits the state of the lifting frame 3 again through the signal transmission module 15 to facilitate timely maintenance, so as to prevent the lifting frame 3 from tilting, resulting in inaccurate adjustment of the fire extinguishing mechanism or long-term abnormality, resulting in damage to the fire-fighting robot and inability to use.

[0026] In the utility model, the installation tube 4 and the connecting shaft 5 are provided to play a guiding role when the lifting frame 3 is lifted or lowered, and the air pump and the air pipe 6 can be used to change the air pressure inside the installation tube 4 so that the connecting shaft 5 has an upward movement tendency, which can reduce the load of the hydraulic cylinder 2 during lifting to improve the stability of the lifting frame 3, and when the hydraulic cylinder 2 vibrates or the pressure is released out of control during operation, the air pressure can play a certain buffering role, which can avoid the amplitude of the lifting frame 3 and the fire extinguishing mechanism. At the same time, by providing an infrared transmitter 13 affected by gravity and a fixed infrared receiver 8, the stability of the lifting frame 3 can be monitored, and a signal can be transmitted in time when the lifting frame 3 is tilted, so as to avoid the lifting frame 3 tilting, resulting in inaccurate adjustment of the fire extinguishing mechanism, or long-term abnormality, which will cause the fire-fighting robot to be damaged and unable to be used.

[0027] See also Figure 4, wherein: a buzzer 16 is installed on the lifting frame 3, and the buzzer 16 is connected to the processor 14 by signal.

[0028] In the present invention, when the abnormality processor 14 of the lifting frame 3 receives a signal, it controls the buzzer 16 to operate, and the buzzer 16 generates a buzzing sound to remind nearby personnel, so that they can understand the equipment status in time and perform maintenance in time.

[0029] See also Figure 1 and 2 , wherein: the outer ring of the connecting shaft 5 is fixedly connected with a sealing ring 17, and the sealing ring 17 is slidably connected with the inner wall of the mounting tube 4.

[0030] In the present invention, the provision of the sealing ring 17 can further improve the sealing performance of the mounting tube 4, thereby preventing the gas sent into the air pipe 6 from escaping and thus failing to change the air pressure.

[0031] See also Figure 3 , wherein: a counterweight block 18 is fixedly installed on the left side of the gravity plate 12, and the counterweight block 18 is made of metal material.

[0032] In the present invention, the counterweight block 18 made of metal can increase the weight of the gravity plate 12 , so that the weight on the left and right sides of the gravity plate 12 is balanced, so as to keep the stability of the gravity plate 12 .

[0033] See also Figure 3 , wherein: a filter screen 20 is installed on the inner wall of the installation cylinder 4 , and the air pipe 6 is located at the bottom of the filter screen 20 .

[0034] In the present invention, the filter screen 20 can prevent debris from entering the installation tube 4 and affecting the normal operation of the connecting shaft 5 without affecting the airflow.

[0035] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A lifting mechanism for a fire-fighting robot, comprising a mobile base (1), a hydraulic cylinder (2) and a lifting frame (3), wherein the lifting frame (3) is slidably mounted on the top of the mobile base (1), the hydraulic cylinder (2) is mounted on the top of the mobile base (1), and the top end of the hydraulic cylinder (2) is mounted on the bottom of the lifting frame (3), characterized in that: The top of the mobile base (1) is fixedly mounted with evenly distributed mounting tubes (4), the interior of the mounting tube (4) is slidably mounted with a connecting shaft (5), the top end of the connecting shaft (5) passes through the mounting tube (4) and is connected to the bottom of the lifting frame (3), the interior of the mounting tube (4) is connected with an air pipe (6), and an air pressure sensor (7) is mounted on the inner wall of the mounting tube (4); An infrared receiver (8) is fixedly mounted on the bottom of the lifting frame (3); a mounting seat (9) is fixedly mounted on the bottom of the lifting frame (3); a circular groove (10) is provided inside the mounting seat (9); a sleeve ball (11) is movably mounted inside the circular groove (10); a gravity plate (12) is fixedly connected to the bottom of the sleeve ball (11); an infrared transmitter (13) is fixedly mounted on the gravity plate (12); the infrared transmitter (13) is located on the left side of the infrared receiver (8); a processor (14) and a signal transmission module (15) are integrated inside the lifting frame (3); the signal transmission module (15), the infrared receiver (8) and the air pressure sensor (7) are all signal-connected to the processor (14).

2. A lifting mechanism for a fire-fighting robot according to claim 1, characterized in that: A buzzer (16) is installed on the lifting frame (3), and the buzzer (16) is connected to the processor (14) by signal.

3. The lifting mechanism for a fire-fighting robot according to claim 1, characterized in that: The outer ring of the connecting shaft (5) is fixedly connected with a sealing ring (17), and the sealing ring (17) is slidably connected to the inner wall of the mounting cylinder (4).

4. The lifting mechanism for a fire-fighting robot according to claim 1, characterized in that: A counterweight block (18) is fixedly mounted on the left side of the gravity plate (12), and the counterweight block (18) is made of metal material.

5. The lifting mechanism for a fire-fighting robot according to claim 1, characterized in that: An expansion groove (19) is provided at the bottom of the mounting seat (9), and the interior of the expansion groove (19) is connected to the interior of the circular groove (10).

6. The lifting mechanism for a fire-fighting robot according to claim 1, characterized in that: A filter screen (20) is installed on the inner wall of the installation cylinder (4), and the air pipe (6) is located at the bottom of the filter screen (20).

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