Forcible entry training device for fire fighting

Abstract

The invention relates to the technical field of fire-fighting training devices, in particular to a fire-fighting forcible entry training device which comprises a device shell, a circular tool bit and a circular shell are arranged on the inner wall of the device shell, and a non-rigid transmission mechanism, a liquid switching mechanism and a cooling mechanism are arranged between the circular tool bit and the circular shell; the non-rigid transmission mechanism comprises a first rotating shaft fixedly connected to the circular tool bit and a second rotating shaft rotationally penetrating through the circular shell, the ends, close to each other, of the first rotating shaft and the second rotating shaft are fixedly connected with a second impeller set and a first impeller set correspondingly, and the second impeller set and the first impeller set are arranged in a crossed mode. The sides, close to each other, of the outer walls of the first rotating shaft and the second rotating shaft are rotationally connected with liquid shells. When power is transmitted, rigid transmission is avoided, so that when the circular tool bit is stuck, the motor can be buffered to a certain extent, overload impact of the motor can be relieved, and the service life of the motor is prolonged.

Description

Technical Field

[0001] This invention relates to the field of fire training equipment technology, and in particular to a fire-fighting demolition training device. Background Technology

[0002] In daily fire fighting and rescue operations, traditional methods such as cutting, breaking, and technical unlocking are slow and time-consuming. Furthermore, with the development and application of technological products such as electronic locks and fingerprint locks, the complexity of lock cylinders has increased the difficulty of breaking. Therefore, fire rescue operations require equipment that can quickly break locks, save manpower at the rescue site, and shorten the breaking time. In order to quickly break down security doors during rescue operations, firefighters need to strengthen their practice with breaching devices during regular training to improve their proficiency in using them.

[0003] In existing technology, when a breaching device is working, it generally uses a motor to drive a rotating shaft and a cutting head to rotate, and the cutting head is used to break down the security door to create an escape route. However, since the motor, rotating shaft and cutting head are rigidly connected, when the cutting head gets stuck, it will cause the motor to run under overload, which will damage the motor and affect its service life. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of the prior art by proposing a fire-fighting demolition training device.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a fire-fighting demolition training device, comprising a device shell, wherein a circular blade and a circular shell are provided on the inner wall of the device shell, and a non-rigid transmission mechanism, a liquid switching mechanism and a cooling mechanism are provided between the circular blade and the circular shell; The non-rigid transmission mechanism includes a first rotating shaft fixedly connected to the circular cutter head and a second rotating shaft rotatably passing through the circular shell. A second impeller group and a first impeller group are respectively fixedly connected to one end of the first rotating shaft and the second rotating shaft close to each other. The second impeller group and the first impeller group are arranged in an alternating pattern. A liquid shell is rotatably connected to the outer walls of the first rotating shaft and the second rotating shaft close to each other. The liquid shell is filled with transmission hydraulic oil. The rotation of the first impeller group drives the transmission hydraulic oil and the second impeller group to rotate.

[0006] Preferably, the liquid switching mechanism includes a fixed column fixedly connected to the bottom of the circular shell near the circular cutter head, and four fixed columns are provided. A square box is fixedly connected to the other end of the four fixed columns. A switching tube is fixedly passed through the top of the square box, and the switching tube is fixedly connected to the liquid shell.

[0007] Preferably, an electric cylinder is fixedly connected to the inner side of the fixed column at one end of the circular shell near the circular cutter head. An electric rod is provided on the inner wall of the electric cylinder. The electric rod passes through the square box. An extrusion plate that slides back and forth on the inner wall of the square box is fixedly connected to the other end of the electric rod. The thickness of the extrusion plate is greater than the diameter of the switching tube.

[0008] Preferably, both sides of the outer wall of the liquid shell are fixedly connected to a fixing frame, and both fixing frames are fixedly connected to the circular shell.

[0009] Preferably, the cooling mechanism includes a cooling shell rotatably connected to the outer walls of the first and second rotating shafts corresponding to the outer walls of the liquid shell. The cooling shell and two fixed brackets are fixedly connected through the cooling shell. Three U-shaped rods are fixedly connected to one side of the outer wall of the cooling shell, and a semi-circular plate is fixedly connected to the other end of the three U-shaped rods. A flexible tube is provided on the inner wall of the semi-circular plate.

[0010] Preferably, the cooling mechanism further includes a cooling box fixedly connected to the top of the circular shell near the circular cutter head. A plurality of semiconductor cooling chips are fixedly connected to the outer wall of the cooling box. A first connecting pipe is fixedly connected to the other end of the cooling box. The first connecting pipe is fixedly connected to a semi-circular plate and a flexible hose. A second connecting pipe is fixedly connected to the bottom end of the cooling shell. The second connecting pipe is fixedly connected to a semi-circular plate and a flexible hose. A third connecting pipe is fixedly connected to the top of the cooling shell near the circular shell. The third connecting pipe is fixedly connected to the cooling box.

[0011] Preferably, three sets of fixing plates are fixedly connected to the outer wall of the first rotating shaft, and a fixing shaft is fixedly connected between each of the three sets of fixing plates. Rollers are rotatably connected to the outer walls of the three fixing shafts, and the rollers are used to squeeze the hose.

[0012] Preferably, a drive motor is fixedly connected to one side of the inner wall of the circular shell, the drive end of the drive motor is fixedly connected to the second rotating shaft, a speed sensor is fixedly inserted through the fixed bracket on one side, and an intelligent controller is fixedly connected to the lower part of the circular shell corresponding to the speed sensor at the end of the circular shell near the circular cutter head.

[0013] Preferably, the device housing has first through holes at both the left and right ends, and push handles are fixedly connected to the left and right sides of the outer wall of the circular housing. The two push handles pass through the two first through holes respectively. The device housing has a second through hole at the bottom end, and a switch handle is fixedly connected to the bottom end of the circular housing. The switch handle passes through the second through hole, and a magnetic suction cup is fixedly connected to one side of the outer wall of the device housing.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the non-rigid transmission mechanism, the first impeller group can be driven to rotate by the second rotating shaft. Under the guidance of the transmission hydraulic oil, the first impeller group gradually contacts and meshes with the second impeller group. This transmission method avoids the rigid transmission mode. When the circular cutter head encounters jamming, it can play a certain buffering role on the motor, effectively alleviate the overload impact on the motor, and thus extend the service life of the motor. 2. Through the set liquid switching mechanism, when the first impeller group and the second impeller group are running at high speed and the speed reaches the preset threshold, the electric rod and electric cylinder work together to drive the extrusion plate to move, and collect the transmission hydraulic oil into the square box. Since the first impeller group and the second impeller group are in close contact at high speed at this time, the resistance loss during the rotation process can be effectively reduced, the rotation speed can be increased, thereby speeding up the breaking process of the security door and improving the overall breaking operation efficiency. 3. Through the cooling mechanism, the first rotating shaft can drive the fixed plate and the fixed shaft to revolve around its own axis. When the roller contacts the hose, the roller will rotate, thereby drawing the coolant from the cooling tank and delivering it to the inside of the cooling shell. This cools the power transmission fluid inside the liquid shell, preventing the power transmission fluid from increasing in viscosity due to temperature rise and ensuring that the power transmission fluid maintains good fluidity. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a fire-fighting demolition training device according to the present invention; Figure 2 This is a side view of a fire-fighting demolition training device according to the present invention; Figure 3 This is a structural diagram of the circular blade and circular shell of a fire-fighting demolition training device according to the present invention; Figure 4 This is a structural diagram of a semi-circular plate for a fire-fighting demolition training device according to the present invention; Figure 5 This is a vertical sectional view of the cooling shell and liquid shell of a fire-fighting demolition training device according to the present invention; Figure 6 This is a cross-sectional view of the cooling shell and liquid shell of a fire-fighting demolition training device according to the present invention; Figure 7 This is a structural diagram of the fixed shaft of a fire-fighting demolition training device according to the present invention; Figure 8 This is a structural diagram of the internal structure of the outer shell of a fire-fighting demolition training device according to the present invention; Figure 9 This is a vertical sectional view of the circular shell of a fire-fighting demolition training device according to the present invention.

[0016] In the diagram: 1. Device housing; 2. Magnetic chuck; 3. Circular blade; 4. First through hole; 5. Push handle; 6. Second through hole; 7. Switch handle; 8. Circular shell; 9. Square box; 10. Fixing frame; 11. Semicircular plate; 12. Fixing column; 13. First rotating shaft; 14. U-shaped rod; 15. First connecting pipe; 16. Cooling box; 17. Semiconductor cooling chip; 18. Second rotating shaft; 19. Speed ​​sensor; 20. Intelligent controller; 21. Hoses; 22. Rollers; 23. Fixing plate; 24. Second connecting pipe; 25. Cooling housing; 26. First impeller assembly; 27. Liquid housing; 28. Second impeller assembly; 29. ​​Switching pipe; 30. Extrusion plate; 31. Electric rod; 32. Electric cylinder; 33. Fixing shaft; 34. Drive motor; 35. Third connecting pipe. Detailed Implementation

[0017] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0018] like Figures 1-9 The fire-fighting demolition training device shown includes a device housing 1. A circular cutter head 3 and a circular shell 8 are arranged on the inner wall of the device housing 1. A non-rigid transmission mechanism, a liquid switching mechanism, and a cooling mechanism are arranged between the circular cutter head 3 and the circular shell 8. The non-rigid transmission mechanism provides slight overload protection during power transmission, thereby extending the service life of the power mechanism. The cooling mechanism cools the transmission hydraulic oil, preventing it from overheating and becoming viscous during use. The non-rigid transmission mechanism includes a first rotating shaft 13 fixedly connected to the circular cutter head 3 and a second rotating shaft 18 rotatably passing through the circular shell 8. A second impeller assembly 28 and a first impeller assembly 26 are fixedly connected to one end of the first rotating shaft 13 and the second rotating shaft 18 respectively, with the second impeller assembly 28 and the first impeller assembly 26 arranged alternately. A liquid shell 27 is rotatably connected to one side of the outer walls of the first rotating shaft 13 and the second rotating shaft 18, with transmission hydraulic oil inside the liquid shell 27. The rotation of the first impeller assembly 26 drives the transmission hydraulic oil and the second impeller assembly 28 to rotate.

[0019] like Figure 3 , Figure 4 , Figure 5As shown, the liquid switching mechanism includes four fixed posts 12 fixedly connected to the bottom of the circular shell 8 near the circular cutter head 3. A square box 9 is fixedly connected to the other end of each fixed post 12. A switching pipe 29 is fixedly inserted through the top of the square box 9 and is fixedly connected to the liquid shell 27. The fixed posts 12 fix and limit the square box 9, while the switching pipe 29 can collect the transmission hydraulic oil into the square box 9 during high-speed rotation, reducing resistance during rotation and thus increasing the rotation speed.

[0020] like Figure 3 , Figure 5 As shown, an electric cylinder 32 is fixedly connected to the inner side of the circular shell 8 near the circular cutter head 3, corresponding to the fixed column 12. An electric rod 31 is provided on the inner wall of the electric cylinder 32, and the electric rod 31 passes through the square box 9. The other end of the electric rod 31 is fixedly connected to a pressing plate 30 that slides back and forth on the inner wall of the square box 9. The thickness of the pressing plate 30 is greater than the diameter of the switching pipe 29. By moving the electric rod 31 with the electric cylinder 32, the pressing plate 30 is moved back and forth, thereby allowing the transmission hydraulic oil to be collected or ejected.

[0021] like Figure 4 , Figure 6 As shown, two fixing brackets 10 are fixedly connected to both sides of the outer wall of the liquid shell 27, and both fixing brackets 10 are fixedly connected to the circular shell 8. The fixing brackets 10 can fix and limit the liquid shell 27 to prevent it from rotating.

[0022] like Figure 4 As shown, the cooling mechanism includes a cooling housing 25 rotatably connected to the outer walls of the first rotating shaft 13 and the second rotating shaft 18, corresponding to the outer wall of the liquid housing 27. The cooling housing 25 and two fixed brackets 10 are fixedly connected through it. Three U-shaped rods 14 are fixedly connected to one side of the outer wall of the cooling housing 25, and a semi-circular plate 11 is fixedly connected to the other end of the three U-shaped rods 14. A flexible hose 21 is provided on the inner wall of the semi-circular plate 11. The cooling housing 25 keeps the liquid housing 27 cool, thereby cooling the transmission hydraulic oil inside the liquid housing 27, preventing the transmission hydraulic oil from heating up and becoming viscous, and ensuring the fluidity of the transmission hydraulic oil. The U-shaped rods 14 fix and limit the semi-circular plate 11, ensuring the stability of the semi-circular plate 11.

[0023] like Figure 3 , Figure 4As shown, the cooling mechanism also includes a cooling box 16 fixedly connected to the top of the circular shell 8 near the circular cutter head 3. Multiple semiconductor cooling chips 17 are fixedly connected to the outer wall of the cooling box 16. A first connecting pipe 15 is fixedly connected to the other end of the cooling box 16, and is fixedly connected to a semi-circular plate 11 and a flexible hose 21. A second connecting pipe 24 is fixedly connected to the bottom end of the cooling shell 25, and is fixedly connected to the semi-circular plate 11 and the flexible hose 21. A third connecting pipe 35 is fixedly connected to the top of the cooling shell 25 near the circular shell 8, and is fixedly connected to the cooling box 16. The semiconductor cooling chips 17 can cool the coolant in the cooling box 16, ensuring the cooling effect. Simultaneously, the coolant is transferred through the first connecting pipe 15 into the flexible hose 21, then through the second connecting pipe 24 into the cooling shell 25, and finally through the third connecting pipe 35 back into the cooling box 16, completing the cooling process.

[0024] like Figure 4 , Figure 7 As shown, three sets of fixing plates 23 are fixedly connected to the outer wall of the first rotating shaft 13. Each of the three sets of fixing plates 23 is fixedly connected to a fixing shaft 33. Rollers 22 are rotatably connected to the outer walls of the three fixing shafts 33. The rollers 22 are used to squeeze the hose 21. The rollers 22 are installed on the first rotating shaft 13 through the fixing plates 23, thereby completing the extraction and cooling operation.

[0025] like Figure 3 , Figure 9 As shown, a drive motor 34 is fixedly connected to one side of the inner wall of the circular shell 8. The drive end of the drive motor 34 is fixedly connected to the second rotating shaft 18. A speed sensor 19 is fixedly inserted through a mounting bracket 10 on one side. A smart controller 20 is fixedly connected to the end of the circular shell 8 near the circular cutter head 3, below the speed sensor 19. The drive motor 34 drives the second rotating shaft 18 to rotate. When the second rotating shaft 18 reaches a certain speed, the speed sensor 19 transmits the measured data to the smart controller 20, and the smart controller 20 controls the electric cylinder 32 to complete the extraction of transmission hydraulic oil.

[0026] like Figure 1 , Figure 2As shown, the outer casing 1 of the device has first through holes 4 at both ends. The outer walls of the circular casing 8 are fixedly connected to push handles 5 on both sides, with each push handle 5 passing through one of the first through holes 4. The bottom of the outer casing 1 has a second through hole 6, and the bottom of the circular casing 8 is fixedly connected to a switch handle 7, which passes through the second through hole 6. A magnetic suction cup 2 is fixedly connected to one side of the outer wall of the outer casing 1. The magnetic suction cup 2 can be used to fix the entire device to the security door. Then, the switch handle 7 controls the rotation of the drive motor 34, while the push handles 5 move the circular casing 8 closer to the security door, thus completing the dismantling of the security door.

[0027] Working principle: First, the magnetic chuck 2 is brought into contact with the security door. Then, the magnetic chuck 2 is turned on by the switch and firmly attached to the security door. Then, the drive motor 34 is started by the button on the switch handle 7, which drives the second shaft 18 to rotate. The second shaft 18 drives the first impeller assembly 26 to rotate. Under the action of the transmission hydraulic oil, the first impeller assembly 26 gradually contacts the second impeller assembly 28. The second impeller assembly 28 drives the first shaft 13 and the circular cutter head 3 to rotate. During power transmission, rigid transmission can be avoided. Therefore, when the circular cutter head 3 jams, it can buffer the drive motor 34 to a certain extent, thereby alleviating the overload impact of the drive motor 34 and extending the service life of the drive motor 34. When the second rotating shaft 18 reaches a certain speed, the speed sensor 19 transmits the measured speed to the intelligent controller 20, which then controls the electric cylinder 32 to retract the electric rod 31 and move the extrusion plate 30. At this time, the transmission hydraulic oil flows into the square box 9 through the switching pipe 29 and is stored. Therefore, when transmitting power, the resistance to rotation can be reduced and the rotation speed can be increased, which can break through the security door faster and improve the breaking efficiency. In addition, the first rotating shaft 13 rotates with the fixed plate 23 and the fixed shaft 33, and revolves around the axis of the first rotating shaft 13. Since the roller 22 and the fixed shaft 33 are rotatably connected, the roller 22 rotates when it contacts the hose 21, so that the coolant can be extracted and the coolant is drawn from the cooling tank 16. Then, it flows into the cooling shell 25 through the first connecting pipe 15, the hose 21, and the second connecting pipe 24, and then flows back into the cooling tank 16 through the third connecting pipe 35, thus completing the cooling treatment of the transmission hydraulic oil and preventing the transmission hydraulic oil from becoming viscous. At the same time, the semiconductor cooling chip 17 cools the coolant to ensure the cooling effect of the coolant. At the same time, the circular shell 8 and the circular blade 3 are moved by pushing the handle 5, and the security door is broken open to create a rescue passage.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A fire-fighting demolition training device, comprising a device housing (1), characterized in that: The inner wall of the outer shell (1) of the device is provided with a circular cutter head (3) and a circular shell (8), and a non-rigid transmission mechanism, a liquid switching mechanism and a cooling mechanism are provided between the circular cutter head (3) and the circular shell (8); The non-rigid transmission mechanism includes a first rotating shaft (13) fixedly connected to the circular cutter head (3) and a second rotating shaft (18) rotatably passing through the circular shell (8). The first rotating shaft (13) and the second rotating shaft (18) are respectively fixedly connected to a second impeller group (28) and a first impeller group (26) at one end close to each other. The second impeller group (28) and the first impeller group (26) are arranged in a cross pattern. The outer walls of the first rotating shaft (13) and the second rotating shaft (18) are rotatably connected to a liquid shell (27) at one side close to each other. The liquid shell (27) is filled with transmission hydraulic oil. The first impeller group (26) rotates, causing the transmission hydraulic oil and the second impeller group (28) to rotate.

2. The fire-fighting demolition training device according to claim 1, characterized in that: The liquid switching mechanism includes a fixed column (12) fixedly connected to the bottom of the circular shell (8) near the circular cutter head (3). There are four fixed columns (12). The other end of the four fixed columns (12) is fixedly connected to a square box (9). A switching tube (29) is fixedly passed through the top of the square box (9). The switching tube (29) and the liquid shell (27) are fixedly connected through each other.

3. The fire-fighting demolition training device according to claim 2, characterized in that: An electric cylinder (32) is fixedly connected to the inner side of the fixed column (12) at one end of the circular shell (8) near the circular cutter head (3). An electric rod (31) is provided on the inner wall of the electric cylinder (32). The electric rod (31) passes through the square box (9). An extrusion plate (30) that slides back and forth on the inner wall of the square box (9) is fixedly connected to the other end of the electric rod (31). The thickness of the extrusion plate (30) is greater than the diameter of the switching tube (29).

4. The fire-fighting demolition training device according to claim 1, characterized in that: The liquid shell (27) has fixed brackets (10) on both sides of its outer wall, and both fixed brackets (10) are fixedly connected to the circular shell (8).

5. A fire-fighting demolition training device according to claim 1, characterized in that: The cooling mechanism includes a cooling shell (25) rotatably connected to the outer walls of the first rotating shaft (13) and the second rotating shaft (18) corresponding to the outer wall of the liquid shell (27). The cooling shell (25) and two fixing brackets (10) are fixedly connected through each other. Three U-shaped rods (14) are fixedly connected to one side of the outer wall of the cooling shell (25), and a semi-circular plate (11) is fixedly connected to the other end of the three U-shaped rods (14). A flexible hose (21) is provided on the inner wall of the semi-circular plate (11).

6. A fire-fighting demolition training device according to claim 5, characterized in that: The cooling mechanism also includes a cooling box (16) fixedly connected to the top of the circular shell (8) near the circular cutter head (3). Multiple semiconductor cooling chips (17) are fixedly connected to the outer wall of the cooling box (16). A first connecting pipe (15) is fixedly connected to the other end of the cooling box (16). The first connecting pipe (15) and the semi-circular plate (11) are fixedly connected. The first connecting pipe (15) and the hose (21) are fixedly connected. A second connecting pipe (24) is fixedly connected to the bottom end of the cooling shell (25). The second connecting pipe (24) and the semi-circular plate (11) are fixedly connected. The second connecting pipe (24) and the hose (21) are fixedly connected. A third connecting pipe (35) is fixedly connected to the top of the cooling shell (25) near the circular shell (8). The third connecting pipe (35) and the cooling box (16) are fixedly connected.

7. A fire-fighting demolition training device according to claim 6, characterized in that: The outer wall of the first rotating shaft (13) is fixedly connected to three sets of fixing plates (23), and each of the three sets of fixing plates (23) is fixedly connected to a fixing shaft (33). Each of the three fixing shafts (33) is rotatably connected to a roller (22), which is used to squeeze the hose (21).

8. A fire-fighting demolition training device according to claim 4, characterized in that: A drive motor (34) is fixedly connected to one side of the inner wall of the circular shell (8). The drive end of the drive motor (34) is fixedly connected to the second rotating shaft (18). A speed sensor (19) is fixedly connected through the fixed bracket (10) on one side. A smart controller (20) is fixedly connected to the end of the circular shell (8) near the circular cutter head (3) below the speed sensor (19).

9. A fire-fighting demolition training device according to claim 1, characterized in that: The outer shell (1) of the device is provided with first through holes (4) at both the left and right ends. The outer walls of the circular shell (8) are fixedly connected with push handles (5) on both the left and right sides. The two push handles (5) pass through the two first through holes (4) respectively. The bottom end of the outer shell (1) of the device is provided with a second through hole (6). The bottom end of the circular shell (8) is fixedly connected with a switch handle (7). The switch handle (7) passes through the second through hole (6). A magnetic suction cup (2) is fixedly connected to one side of the outer wall of the device (1).

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