High-rise lifesaving device

Abstract

The utility model relates to the technical field of lifesaving devices, in particular to a high-rise lifesaving device which comprises a rotating wheel, a hydraulic brake, a hydraulic pump, a hydraulic reversing valve and a speed regulating fly ball used for driving a valve element in the hydraulic reversing valve to move. The runner is in transmission connection with the hydraulic pump and the speed-regulating flyweight; a first spring for pushing a valve core in the direction close to the speed regulating fly ball is arranged in the hydraulic reversing valve; an inlet and one outlet of the hydraulic reversing valve are connected with an oil tank through an oil inlet pipeline and an oil return pipeline respectively, and the other outlet of the hydraulic reversing valve is connected with a hydraulic brake through a brake pipeline. The brake pipeline is connected with a compensation hydraulic cylinder through a compensation pipeline, and a lever is arranged on one side of the compensation hydraulic cylinder and rotates around the middle of the compensation hydraulic cylinder. The hydraulic reversing valve is provided with a push rod used for pushing the first spring in the direction close to the speed adjusting fly ball. The two ends of the lever abut against a piston rod and a push rod of the compensation hydraulic cylinder respectively. According to the utility model, starting and braking can be delayed; and the influence of the outer diameter reduction of the rope ring on the descending speed is reduced as much as possible.

Description

Technical Field

[0001] This utility model relates to the field of life-saving device technology, specifically a high-rise building life-saving device. Background Technology

[0002] Patent application number 202410277340.2 discloses a high-rise rescue device, including a fixed base, an active roller, and a hydraulic braking system for braking the active roller. A rope is wound around the active roller, forming a rope loop. The hydraulic braking system includes an oil tank, a brake, and a hydraulic pump. It also includes a centrifugal speed controller to control whether the hydraulic oil pumped by the hydraulic pump enters the brake or flows back to the oil tank. The active roller is connected to the hydraulic pump and the centrifugal speed controller. A compensation device is also included. This device is installed outside windows on high-rise buildings. In the event of a fire or other dangerous situation inside the building, people escape to the window under the pull of the rope. During escape, when the speed increases to a certain value, the hydraulic braking system brakes and decelerates; when the speed decreases to a certain value, braking stops, and the speed continues to increase, thus maintaining the speed within a certain range. During descent, the outer diameter of the rope loop decreases, affecting the range of descent speed. The compensation device can minimize the impact of the decreasing outer diameter of the rope loop on the descent speed.

[0003] The disadvantages of the patent with application number 202410277340.2 are that the compensation device has a complex structure and poor stability, no cooling device, the device temperature is high during use and cannot work for a long time under high intensity, the rope is easy to loosen and fall off during operation, and the overall structure of the device is not compact enough and too scattered. Utility Model Content

[0004] The main purpose of this utility model is to provide a high-rise building rescue device to solve the problems of the above-mentioned existing technology, such as the complex structure and poor stability of the compensation device, the lack of a cooling device, the high temperature of the device during use making it unable to work for a long time under high intensity, the rope being easy to loosen and fall off during operation, and the overall structure of the device not being compact enough and too scattered.

[0005] To achieve the above objectives, this utility model provides a high-rise rescue device, comprising a rotating wheel with a rope wound around its exterior, a hydraulic brake for braking the rotating wheel, a hydraulic pump for providing power to the hydraulic oil, a hydraulic directional valve for controlling the start and stop of the brake, and a speed-regulating flyweight for driving the movement of the valve core inside the hydraulic directional valve; the rotating wheel is connected to the hydraulic pump and the speed-regulating flyweight via a transmission; the hydraulic directional valve is provided with a first spring that pushes the valve core towards the speed-regulating flyweight; the inlet and one outlet of the hydraulic directional valve are connected to an oil tank via an oil inlet pipe and a return pipe, respectively, and the other outlet is connected to the hydraulic brake via a brake pipe; the brake pipe is connected to a compensating hydraulic cylinder via a compensating pipe, and a lever is provided on one side of the compensating hydraulic cylinder, the lever rotating around its center; the hydraulic directional valve is provided with a push rod for pushing the first spring towards the speed-regulating flyweight; the two ends of the lever abut against the piston rod and push rod of the compensating hydraulic cylinder, respectively.

[0006] Furthermore, the compensation pipeline is equipped with a first check valve that only allows oil to flow towards the compensation hydraulic cylinder.

[0007] Furthermore, a pressure relief valve is installed on the compensation pipeline.

[0008] Furthermore, the outer diameter of the rotor is 40cm-120cm.

[0009] Furthermore, the brake pipe is connected to a needle cylinder, the needle cylinder abuts against a connecting switch, the connecting switch is connected to a water pipe, one end of the water pipe is connected to a water tank, and the other end is connected to a nozzle facing the hydraulic brake; the water tank is connected to a booster pump.

[0010] Furthermore, the inside of the impeller is provided with a cavity, and a fixed frame is provided inside the cavity; the housing of the hydraulic pump is fixedly connected to the fixed frame, and the drive shaft of the hydraulic pump is rotatably connected to the fixed frame; the hydraulic pump is connected to the oil inlet pipe, and a second check valve is provided in the pipe between the hydraulic pump and the hydraulic directional valve; a speed-regulating flyweight is also rotatably connected to the fixed frame.

[0011] Furthermore, the hydraulic brake includes a brake cylinder fixedly connected to the fixed frame, a brake block fixedly connected to the piston rod of the brake cylinder, and a brake drum fixedly connected to the rotating wheel; the brake drum is located on the outside of the fixed frame.

[0012] Furthermore, one side of the rotating wheel is provided with a sidewall, and the other side is provided with an opening; an installation groove is provided inside the sidewall, and the inner wall of the installation groove is fixedly connected to the outer ring of the planetary gear, and the output shaft of the sun gear of the planetary gear is fixedly connected to the drive shaft of the hydraulic pump; the speed-regulating fly hammer includes a rotating shaft, a movable sleeve movably connected to the rotating shaft, and a fly hammer that drives the movable sleeve to move; the output shaft of the sun gear of the planetary gear is connected to the rotating shaft through gear transmission, and the movable sleeve is connected to the valve core of the hydraulic reversing valve.

[0013] Furthermore, a planetary carrier is provided on the planetary gear, and a planetary carrier shaft is fixedly connected to the planetary carrier. The planetary carrier shaft is rotatably connected to the side wall. One end of a stop rod located on one side of the side wall is fixedly connected to the planetary carrier shaft, and the other end of the stop rod is fixedly connected to a limit frame. Two rollers are arranged opposite each other on the limit frame.

[0014] Furthermore, a second spring is provided on the outer side of the push rod for pushing the push rod closer to the first spring; the hydraulic directional valve is provided with a threaded adjusting nut, and one end of the second spring abuts against the adjusting nut.

[0015] This invention, by setting up a lever, a push rod, and a compensating hydraulic cylinder, enables the compensating hydraulic cylinder to push the lever and then the push rod, increasing the resistance encountered by the centrifugal speed controller when pushing the valve core, thereby delaying the start braking; minimizing the impact of the reduced outer diameter of the rope loop on the descent speed; and improving stability by using the compensating hydraulic cylinder to drive the push rod.

[0016] By setting a first check valve, this utility model can prevent the hydraulic oil in the compensation hydraulic cylinder from flowing back, and can push the piston rod in the compensation hydraulic cylinder outwards a little each time; it can gradually accumulate the effect of delaying braking each time.

[0017] This invention can cool down a hydraulic brake by setting up a water pipe, a nozzle, and a water tank; by setting up a connecting switch, it can start spraying water mist to cool down while braking, and stop cooling down after braking ends, thus avoiding water waste.

[0018] This invention uses a limit frame and two rollers to guide and lock the position of the rope at all times, ensuring that the rope is pulled out during operation and is not easy to loosen or fall off.

[0019] Most of the components of this invention are located inside the rotating wheel, resulting in a more compact and scientific structure. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0021] Figure 1 This is a schematic diagram of the high-rise building rescue device in the embodiment;

[0022] In the diagram: 1. Rotary wheel; 101. Side wall; 2. Planetary gear; 201. Planetary carrier; 202. Planetary carrier shaft; 3. Hydraulic pump; 4. Fixed frame; 5. Centrifugal speed controller; 501. Rotary shaft; 502. Movable sleeve; 503. Flying hammer; 6. Hydraulic directional valve; 601. First spring; 602. Valve core; 603. Push rod; 604. Second spring; 605. Adjusting nut; 7. Roller; 8. Hydraulic brake; 801. Brake cylinder; 802. Brake block; 803. Brake drum; 9. Rope; 10. Oil tank; 11. Compensating hydraulic cylinder; 12. Lever; 13. Needle cylinder; 14. Connecting switch; 15. Water pipe; 16. Water tank; 17. Booster pump; 18. First check valve; 19. Pressure relief valve; 20. Second check valve; 21. Stop rod. Detailed Implementation

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] like Figure 1 As shown, according to an embodiment of this utility model, a high-rise rescue device is provided, including a rotating wheel 1 with a rope 9 externally wound around it, a hydraulic brake 8 for braking the rotating wheel, a hydraulic pump 3 for providing power to the hydraulic oil, a hydraulic directional valve 6 for controlling the start and stop of the brake, and a speed-regulating flyweight 5 for driving the valve core 602 inside the hydraulic directional valve 6 to move; the rotating wheel 1 is connected to the hydraulic pump 3 and the speed-regulating flyweight 5, and the hydraulic pump 3 is a gear pump; the hydraulic directional valve 6 is provided with one inlet and two outlets, and a valve core 602 for reversing is movably connected inside the hydraulic directional valve 6; the hydraulic directional valve 6 is provided with a valve core 602 for reversing the direction of movement. The speed-regulating fly hammer 5 pushes the first spring 601 of the valve core 602 in the direction of the speed regulation fly hammer 5; the inlet and one of the outlets of the hydraulic directional valve 6 are connected to the oil tank 10 through the oil inlet pipe and the oil return pipe respectively, and the other outlet is connected to the hydraulic brake 8 through the brake pipe; the brake pipe is connected to the compensating hydraulic cylinder 11 through the compensating hydraulic cylinder 11, and a lever 12 is provided on one side of the compensating hydraulic cylinder 11, which rotates around its middle part; the hydraulic directional valve 6 is provided with a push rod 603 for pushing the first spring 601 in the direction of the speed regulation fly hammer 5; the two ends of the lever 12 abut against the piston rod and the push rod 603 of the compensating hydraulic cylinder 11 respectively.

[0025] The compensation pipeline is equipped with a first check valve 18 that only allows oil to flow towards the compensation hydraulic cylinder 11. The first check valve 18 is a one-way throttle valve. By adjusting the flow rate of the first check valve 18, the speed at which the piston rod inside the compensation hydraulic cylinder 11 extends outward is controlled, thereby controlling the compensation amount of the compensation hydraulic cylinder 11 each time it works.

[0026] A pressure relief valve 19 is installed on the compensation pipeline. The pressure relief valve 19 is used to relieve pressure on the compensation hydraulic cylinder 11 when the high-rise rescue device is used for secondary purposes.

[0027] Depending on the different functions and applications, the outer diameter of the wheel 1 is 40cm-120cm; multiple layers of rope are wound around the outside of the wheel 1 to form a rope loop; the edge of the wheel 1 is provided with a retaining ring to prevent the rope 9 from falling off.

[0028] The brake pipe is connected to a needle cylinder 13, which abuts against a connecting switch 14. The connecting switch 14 is connected to a water pipe 15, one end of which is connected to a water tank 16, and the other end is connected to a nozzle facing the hydraulic brake 8. The water tank 16 is connected to a booster pump 17, which is used to pressurize the inside of the water tank 16.

[0029] The rotating wheel 1 has an internal cavity, and a fixed frame 4 is installed inside the cavity. The fixed frame 4 is fixedly connected to the floor or wall of the escape floor. The housing of the hydraulic pump 3 is fixedly connected to the fixed frame 4, and the drive shaft of the hydraulic pump 3 is rotatably connected to the fixed frame 4. The hydraulic pump 3 is connected to the oil inlet pipe, and a second check valve 20 is installed on the pipe between the hydraulic pump 3 and the hydraulic directional valve 6. The second check valve 20 prevents the oil in the hydraulic directional valve 6 from flowing back to the hydraulic pump 3. A speed-regulating flying hammer 5 is also rotatably connected to the fixed frame 4.

[0030] The hydraulic brake 8 includes a brake cylinder 801 fixedly connected to the fixed frame 4, a brake block 802 fixedly connected to the piston rod of the brake cylinder 801, and a brake drum 803 fixedly connected to the rotating wheel; the brake drum 803 is located on the outside of the fixed frame 4.

[0031] One side of the rotating wheel 1 is provided with a side wall 101, and the other side is provided with an opening; a mounting groove is provided in the side wall 101, and the outer ring of the planetary gear 2 is fixedly connected to the inner wall of the mounting groove. The output shaft of the sun gear of the planetary gear 2 is fixedly connected to the drive shaft of the hydraulic pump 3; the speed-regulating fly hammer 5 includes a rotating shaft 501, a movable sleeve 502 movably connected to the rotating shaft, and a fly hammer 503 that drives the movable sleeve 502 to move; the output shaft of the sun gear of the planetary gear 2 is connected to the rotating shaft 501 through gear transmission, and the movable sleeve 502 is connected to the valve core 602 of the hydraulic reversing valve 6.

[0032] Planetary gear 2 is provided with planetary carrier 201, and planetary carrier shaft 202 is fixedly connected to planetary carrier 201. Planetary carrier shaft 202 is rotatably connected to side wall 101. One end of stop rod 21 located on one side of side wall 101 is fixedly connected to planetary carrier shaft 202, and the other end of stop rod 21 is fixedly connected to limit frame. Stop rod 21 is fixed to the wall by bracket. Two rollers 7 are arranged opposite each other on limit frame, and rope 9 passes through rollers 7. When the device is in use, the rope 9 is pulled down from rollers 7. When not in use, rollers 7 lock the end of rope 9.

[0033] The outer side of the push rod 603 is provided with a second spring 604 for pushing the push rod 603 toward the first spring 601; the hydraulic directional valve 6 is provided with a threaded adjusting nut 605, one end of the second spring 604 abuts against the adjusting nut 605; the adjusting nut 605 can adjust the magnitude of the thrust of the second spring 604 pushing the push rod 603.

[0034] The design principle of this device is to keep the speed of personnel during escape within a range greater than V2 and less than V1. During escape, the linear velocity of the falling rope and the angular velocity of the rope loop formed by the rope winding have a certain linear relationship, that is, V (linear velocity of the falling rope) = ω (angular velocity of the rope loop) R (radius of the rope loop). When the radius of the rope loop remains unchanged, the linear velocity of the falling rope and the rotational speed of the centrifugal speed regulator shaft also have a certain linear relationship.

[0035] Assuming the rope loop radius R remains constant, the rotational speeds N1 and N2 of the centrifugal speed controller are obtained based on the values ​​of V1 and V2. When the centrifugal speed controller reaches N1, the valve core is pushed to block the outlet flowing to the return pipe, while the other outlet opens, allowing the oil to flow to the hydraulic brake, thus enabling the hydraulic brake to engage. This ensures that the hydraulic brake engages each time the rope's descent speed increases to V1. When the centrifugal speed controller reaches N2, braking ends, the valve core is pulled to block the outlet flowing to the braking pipe, while the other outlet opens, reducing the rope's descent speed to V2.

[0036] However, in actual use, as the rope falls, the radius R of the rope loop gradually decreases. When the centrifugal speed controller reaches N1 to brake, the speed of the rope falling is less than V1, and after braking, the speed is less than V2. If this continues, the speed of the rope falling will enter a smaller speed range after each deceleration, and the descent speed will become slower and slower, unable to be maintained in a range greater than V2 and less than V1.

[0037] This invention incorporates a lever, a push rod, and a compensating hydraulic cylinder. Each time oil enters the brake line, a portion of the oil flows into the compensating hydraulic cylinder. This allows the compensating hydraulic cylinder to rotate the lever, which in turn pushes the push rod, increasing the resistance encountered by the centrifugal speed controller when pushing the valve core, thus delaying the braking initiation. It also minimizes the impact of the reduced outer diameter of the rope loop on the descent speed. Furthermore, using the compensating hydraulic cylinder to drive the push rod provides better stability.

[0038] By setting a first check valve, this utility model can prevent the hydraulic oil in the compensation hydraulic cylinder from flowing back, and can push the piston rod in the compensation hydraulic cylinder outwards a little each time; it can gradually accumulate the effect of delaying braking each time.

[0039] During installation and testing, this utility model device supplies hydraulic oil to the hydraulic pump 3, hydraulic reversing 6, and brake pipeline to ensure that the device operates and brakes quickly and effectively.

[0040] This invention can cool down a hydraulic brake by setting up a water pipe, a nozzle, and a water tank; by setting up a needle cylinder 13 to connect a switch 14, it can start spraying water mist to cool down while braking, and stop cooling down after braking ends, thus avoiding water waste.

[0041] This utility model uses a limit frame and two rollers 7 to guide and lock the position of the rope 9 at all times, ensuring that the rope is pulled out during operation and is not easy to loosen or fall off.

[0042] Most of the components of this invention are located inside the rotating wheel, resulting in a more compact structure.

[0043] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-rise building rescue device, comprising a wheel (1) with a rope (9) externally wound around it, a hydraulic brake (8) for braking the wheel, a hydraulic pump (3) for providing power to hydraulic oil, a hydraulic directional valve (6) for controlling the start and stop of the brake, and a speed-regulating flyweight (5) for driving the movement of the valve core (602) inside the hydraulic directional valve (6); the wheel (1) is connected to the hydraulic pump (3) and the speed-regulating flyweight (5); the hydraulic directional valve (6) is provided with a first spring (601) that pushes the valve core (602) toward the speed-regulating flyweight (5); characterized in that, The inlet and one of the outlets of the hydraulic directional valve (6) are connected to an oil tank (10) via an oil inlet pipe and an oil return pipe, respectively, and the other outlet is connected to a hydraulic brake (8) via a brake pipe; the brake pipe is connected to a compensating hydraulic cylinder (11) via a compensating pipe, and a lever (12) is provided on one side of the compensating hydraulic cylinder (11), and the lever (12) rotates around its middle part; the hydraulic directional valve (6) is provided with a push rod (603) for pushing the first spring (601) towards the speed-regulating fly hammer (5); the two ends of the lever (12) abut against the piston rod and the push rod (603) of the compensating hydraulic cylinder (11), respectively.

2. The high-rise building rescue device as described in claim 1, characterized in that, The compensation pipeline is equipped with a first check valve (18) that only allows oil to flow toward the compensation hydraulic cylinder (11).

3. The high-rise building rescue device as described in claim 2, characterized in that, The compensation pipeline is equipped with a pressure relief valve (19).

4. The high-rise building rescue device as described in claim 1, characterized in that, The outer diameter of the wheel (1) is 40cm-120cm.

5. The high-rise building rescue device as described in claim 1, characterized in that, The brake pipe is connected to a needle cylinder (13), the needle cylinder (13) abuts against a connecting switch (14), the connecting switch (14) is connected to a water pipe (15), one end of the water pipe (15) is connected to a water tank (16), and the other end is connected to a nozzle facing the hydraulic brake (8); the water tank (16) is connected to a booster pump (17).

6. The high-rise building rescue device as described in claim 1, characterized in that, The inside of the rotating wheel (1) is provided with a cavity, and a fixed frame (4) is provided in the cavity; the fixed frame (4) is fixedly connected to the housing of the hydraulic pump (3), and the drive shaft of the hydraulic pump (3) is rotatably connected to the fixed frame (4); the hydraulic pump (3) is connected to the oil inlet pipe, and a second check valve (20) is provided in the pipe between the hydraulic pump (3) and the hydraulic reversing valve (6); a speed regulating fly hammer (5) is also rotatably connected to the fixed frame (4).

7. The high-rise building rescue device as described in claim 6, characterized in that, The hydraulic brake (8) includes a brake cylinder (801) fixedly connected to the fixed frame (4), a brake block (802) fixedly connected to the piston rod of the brake cylinder (801), and a brake drum (803) fixedly connected to the rotating wheel; the brake drum (803) is located on the outside of the fixed frame (4).

8. The high-rise building rescue device as described in claim 1, characterized in that, The rotating wheel (1) has a side wall (101) on one side and an opening on the other side; the side wall (101) has an installation groove, the inner wall of the installation groove is fixedly connected to the outer ring of the planetary gear (2), and the sun gear output shaft of the planetary gear (2) is fixedly connected to the drive shaft of the hydraulic pump (3); the speed-regulating fly hammer (5) includes a rotating shaft (501), a movable sleeve (502) movably connected to the rotating shaft, and a fly hammer (503) that drives the movable sleeve (502) to move; the sun gear output shaft of the planetary gear (2) is connected to the rotating shaft (501) through gear transmission, and the movable sleeve (502) is connected to the valve core (602) of the hydraulic reversing valve (6).

9. The high-rise building rescue device as described in claim 8, characterized in that, The planetary gear (2) is provided with a planetary carrier (201), and a planetary carrier shaft (202) is fixedly connected to the planetary carrier (201). The planetary carrier shaft (202) is rotatably connected to the side wall (101). One end of a stop rod (21) located on one side of the side wall (101) is fixedly connected to the planetary carrier shaft (202). The other end of the stop rod (21) is fixedly connected to a limit frame. Two rollers (7) are arranged opposite each other on the limit frame.

10. The high-rise building rescue device as described in claim 1, characterized in that, The push rod (603) is provided with a second spring (604) on its outer side for pushing the push rod (603) towards the first spring (601); the hydraulic reversing valve (6) is provided with a threaded adjusting nut (605), and one end of the second spring (604) abuts against the adjusting nut (605).

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