High-rise lifesaving device

Abstract

The invention 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. 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] The invention relates to the technical field of lifesaving devices, in particular to a high-rise lifesaving device. Background Art

[0002] The patent with application number 202410277340.2 discloses a high-rise life-saving device, including a fixed seat, an active roller, and a hydraulic braking system for braking the active roller; a rope is wound around the active roller, and the rope is wound around the active roller to form a rope loop, and the hydraulic braking system includes an oil tank, a brake and a hydraulic pump; it also includes a centrifugal speed governor; the centrifugal speed governor is used to control the hydraulic oil pumped out of the hydraulic pump to enter the brake or return to the oil tank, and the active roller is connected to the hydraulic pump and the centrifugal speed governor by transmission; it also includes a compensation device; this device is installed outside the window of a high floor, when a dangerous situation such as a fire occurs in the high-rise building, the personnel escape out of the window under the traction of the rope; when the personnel escape, when the speed increases to a certain value, the hydraulic braking system brakes and decelerates, when the speed decreases to a certain value, the braking stops, and the speed continues to increase, so as to maintain the speed within a certain range; during the descent process, the outer diameter of the rope loop becomes smaller, affecting the range of the descent speed, and the compensation device can minimize the impact of the reduction in the 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, there is no cooling device, the temperature of the device is high when in use and it cannot work at high intensity for a long time, the rope is easy to loosen and fall off during operation, and the overall structure of the device is not compact enough and is too scattered. Summary of the invention

[0004] The main purpose of the present invention is to provide a high-rise lifesaving device to solve the problems in the above-mentioned prior art that the compensation device has a complex structure and poor stability, there is no cooling device, the temperature of the device is too high when in use and it cannot work for a long time at high intensity, the rope is easy to loosen and fall off during work, and the overall structure of the device is not compact enough and is too scattered.

[0005] To achieve the above object, the present invention provides a high-rise building rescue device, which includes a runner externally wound with a rope, a hydraulic brake for braking the runner, a hydraulic pump for providing power to the hydraulic oil, a hydraulic reversing valve for controlling the start and stop of braking, and a speed regulating flyweight for driving the spool inside the hydraulic reversing valve to move; the runner is drivingly connected to the hydraulic pump and the speed regulating flyweight; a first spring for pushing the spool in the direction close to the speed regulating flyweight is provided inside the hydraulic reversing valve; the inlet and one of the outlets of the hydraulic reversing valve are respectively connected to an oil tank through an oil inlet pipe and an oil return pipe, and the other outlet is connected to the hydraulic brake through a brake pipe; the brake pipe is connected to a compensation hydraulic cylinder through a compensation pipe, and a lever is provided on one side of the compensation hydraulic cylinder, and the lever rotates around its middle part; a push rod for pushing the first spring in the direction close to the speed regulating flyweight is provided on the hydraulic reversing valve; the two ends of the lever are respectively abutted against the piston rod of the compensation hydraulic cylinder and the push rod.

[0006] Further, a first one-way valve that only allows the oil to flow in the direction of the compensation hydraulic cylinder is provided on the compensation pipe.

[0007] Further, a pressure relief valve is provided on the compensation pipe.

[0008] Further, the outer diameter of the runner is 40 cm - 120 cm.

[0009] Further, the brake pipe is connected to a needle cylinder, the needle cylinder abuts against a communication switch, the communication 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 spray head facing the hydraulic brake; the water tank is connected to a booster pump.

[0010] Further, a cavity is provided inside the runner, and a fixing frame is provided inside the cavity; the fixing frame is fixedly connected to the housing of the hydraulic pump, and the driving shaft of the hydraulic pump is rotatably connected to the fixing frame; the hydraulic pump is connected to the oil inlet pipe, and a second one-way valve is provided on the pipe between the hydraulic pump and the hydraulic reversing valve; the speed regulating flyweight is also rotatably connected to the fixing frame.

[0011] Further, the hydraulic brake includes a brake cylinder fixedly connected to the fixing frame, a brake block fixedly connected to the piston rod of the brake cylinder, and a brake drum fixedly connected to the runner; the brake drum is located outside the fixing frame.

[0012] Further, a side wall is provided on one side of the runner, and an opening is provided on the other side; an installation groove is provided inside the side wall, the inner wall of the installation groove is fixedly connected to the outer ring of a planetary gear, and the output shaft of the sun gear of the planetary gear is fixedly connected to the driving shaft of the hydraulic pump; the speed regulating flyweight includes a rotating shaft, a movable sleeve movably connected to the rotating shaft, and a flyweight for driving 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 spool of the hydraulic reversing valve.

[0013] Further, a planet carrier is provided on the planet gear. A planet carrier shaft is fixedly connected to the planet carrier. The planet 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 planet carrier shaft. The other end of the stop rod is fixedly connected to a limit frame. Two rollers are oppositely arranged on the limit frame.

[0014] Further, a second spring for pushing the push rod towards the direction of the first spring is provided outside the push rod. An adjusting nut is threadedly connected to the hydraulic control valve. One end of the second spring abuts against the adjusting nut.

[0015] By providing a lever, a push rod, and a compensation hydraulic cylinder, the present invention can enable the compensation hydraulic cylinder to push the lever and then push the push rod, increasing the resistance received by the centrifugal governor when pushing the valve core, thereby delaying the start of braking; minimizing the influence of the decrease in the outer diameter of the rope loop on the descending speed as much as possible; driving the push rod through the compensation hydraulic cylinder, with better stability.

[0016] By providing a first one-way valve, the present invention 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 each time; the effect of delaying braking each time can be gradually accumulated.

[0017] By providing a water pipe, a spray head, and a water tank, the present invention can cool the hydraulic brake; by providing a connection switch, it can start spraying water mist for cooling while braking, and stop cooling after braking ends, avoiding waste of water.

[0018] By providing a limit frame and two rollers, the present invention can always guide and lock the position of the locking rope, ensuring the extraction direction of the rope during operation and making it not easy to loosen and fall off.

[0019] Most components of the present invention are arranged inside the runner, with a more compact and scientific structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The schematic diagrams in the specification forming a 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 to the present invention.

[0021] Figure 1 It is a schematic structural diagram of the high-rise building rescue device in the embodiment; In the figure: 1, runner; 101, side wall; 2, planetary gear; 201, planet carrier; 202, planet carrier shaft; 3, hydraulic pump; 4, fixing bracket; 5, centrifugal governor; 501, rotating shaft; 502, movable sleeve; 503, flyweight; 6, hydraulic control valve; 601, first spring; 602, spool; 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, fuel tank; 11, compensation hydraulic cylinder; 12, lever; 13, needle cylinder; 14, connection switch; 15, water pipe; 16, water tank; 17, booster pump; 18, first check valve; 19, pressure relief valve; 20, second check valve; 21, stop lever. Detailed implementation mode

[0022] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0023] As Figure 1 shown, according to an embodiment of the present invention, a high-rise building rescue device is provided, including a runner 1 externally wound with a rope 9, a hydraulic brake 8 for braking the runner, a hydraulic pump 3 for providing power for hydraulic oil, a hydraulic control valve 6 for controlling the start and stop of braking, and a speed-regulating flyweight 5 for driving the spool 602 in the hydraulic control valve 6 to move; the runner 1 is drivingly connected to the hydraulic pump 3 and the speed-regulating flyweight 5, and the hydraulic pump 3 is a gear pump; the hydraulic control valve 6 is provided with one inlet and two outlets, and the spool 602 for commutation is movably connected in the hydraulic control valve 6; a first spring 601 for pushing the spool 602 in the direction close to the speed-regulating flyweight 5 is arranged in the hydraulic control valve 6; the inlet and one of the outlets of the hydraulic control valve 6 are respectively connected to a fuel tank 10 through an oil inlet pipe and an oil return pipe, and the other outlet is connected to the hydraulic brake 8 through a brake pipe; the brake pipe is connected to a compensation hydraulic cylinder 11 through a compensation pipe, and a lever 12 is arranged on one side of the compensation hydraulic cylinder 11, and the lever 12 rotates around the middle thereof; a push rod 603 for pushing the first spring 601 in the direction close to the speed-regulating flyweight 5 is arranged on the hydraulic control valve 6; the two ends of the lever 12 are respectively abutted against the piston rod of the compensation hydraulic cylinder 11 and the push rod 603.

[0024] A first check valve 18 that only allows the oil to flow in the direction of the compensation hydraulic cylinder 11 is arranged on the compensation pipe; the first check valve 18 is a one-way throttle valve, and the speed of the piston rod extending outwards in the compensation hydraulic cylinder 11 is controlled by adjusting the flow rate of the first check valve 18, so as to control the compensation amount of the compensation hydraulic cylinder 11 each time it works.

[0025] A pressure relief valve 19 is provided on the compensation pipeline. The pressure relief valve 19 is used to relieve the pressure of the compensation hydraulic cylinder 11 when the high-rise building rescue device is reused.

[0026] According to different functional models and usage places, the outer diameter of the runner 1 is 40 cm - 120 cm; multiple layers of ropes are wound around the outside of the runner 1 to form a rope loop; a retaining ring for preventing the rope 9 from scattering is provided at the edge of the runner 1.

[0027] The braking pipeline is connected to a needle-shaped oil cylinder 13. The needle-shaped oil cylinder 13 abuts against a communication switch 14. The communication 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 spray head facing the hydraulic brake 8; the water tank 16 is connected to a booster pump 17. The booster pump 17 is used to pressurize the inside of the connected water tank 16.

[0028] A cavity is provided inside the runner 1, and a fixing frame 4 is provided in the cavity; the fixing frame 4 is fixedly connected to the floor or wall of the escape floor; the fixing frame 4 is fixedly connected to the housing of the hydraulic pump 3. The driving shaft of the hydraulic pump 3 is rotatably connected to the fixing frame 4; the hydraulic pump 3 is connected to an oil inlet pipeline. A second one-way valve 20 is provided in the pipeline between the hydraulic pump 3 and the hydraulic directional control valve 6; the second one-way valve 20 prevents the oil in the hydraulic directional control valve 6 from flowing back to the hydraulic pump 3; a speed-regulating flyweight 5 is also rotatably connected to the fixing frame 4.

[0029] The hydraulic brake 8 includes a brake cylinder 801 fixedly connected to the fixing 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 runner; the brake drum 803 is located outside the fixing frame 4.

[0030] One side of the runner 1 is provided with a side wall 101, and the other side is provided with an opening; an installation groove is provided inside the side wall 101. The inner wall of the installation groove is fixedly connected to the outer ring of the planetary gear 2. The sun gear output shaft of the planetary gear 2 is fixedly connected to the driving shaft of the hydraulic pump 3; the speed-regulating flyweight 5 includes a rotating shaft 501, a movable sleeve 502 movably connected to the rotating shaft, and a flyweight 503 for driving 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 directional control valve 6.

[0031] A planet carrier 201 is provided on the planetary gear 2. A planet carrier shaft 202 is fixedly connected to the planet carrier 201. The planet 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 planet carrier shaft 202, and the other end of the stop rod 21 is fixedly connected to a limit frame; the stop rod 21 is fixed to the wall through a bracket; two rollers 7 are oppositely arranged on the limit frame, and the rope 9 passes through the rollers 7; when the device is in use, the rope 9 is pulled out downward from the rollers 7, and when not in use, the rollers 7 lock the rope end of the rope 9.

[0032] On the outer side of the push rod 603, there is a second spring 604 for pushing the push rod 603 in the direction close to the first spring 601; an adjusting nut 605 is threadedly connected to the hydraulic control valve 6, and 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 for pushing the push rod 603.

[0033] The design principle of this device is to keep the speed of personnel during escape within an interval greater than V2 and less than V1; when personnel escape, there is a certain linear relationship between the linear speed of the rope falling and the angular speed of the rotation of the rope loop formed by the winding of the rope, that is, V (linear speed of the rope falling) = ω (angular speed of the rotation of the rope loop) × R (radius of the rope loop); when the radius of the rope loop remains unchanged, there is also a certain linear relationship between the linear speed of the rope falling and the rotational speed of the rotating shaft of the centrifugal governor.

[0034] Assume that the radius R of the rope loop remains unchanged, and the rotational speeds N1 and N2 of the centrifugal governor are obtained according to the values of V1 and V2; when the rotational speed of the centrifugal governor reaches N1, it pushes the valve core to block the outlet of the flow to the return pipeline, and the other outlet opens, and the hydraulic oil flows to the hydraulic brake to make the hydraulic brake brake; in this way, every time the falling speed of the rope increases to V1, the hydraulic brake can brake; when the rotational speed of the centrifugal governor reaches N2, the braking ends, and the valve core is pulled to block the outlet of the flow to the braking pipeline, and the other outlet opens, and the falling speed of the rope decreases to V2. However, in the actual use process, as the rope falls, the radius R of the rope loop gradually decreases. When the rotational speed of the centrifugal governor reaches N1 for braking, the falling speed of the rope is less than V1, and the speed is less than V2 after the braking ends; if this continues, the falling speed of the rope will enter a smaller speed interval every time after deceleration, and the falling speed will become slower and slower, and it cannot be maintained within an interval greater than V2 and less than V1.

[0035] In the present invention, by providing a lever, a push rod, and a compensation hydraulic cylinder, every time the hydraulic oil enters the braking pipeline, part of the hydraulic oil will enter the compensation hydraulic cylinder; it can make the compensation hydraulic cylinder push the lever to rotate, and then push the push rod, increasing the resistance received by the centrifugal governor when pushing the valve core, thereby delaying the start of the braking timing; as much as possible reducing the influence of the decrease in the outer diameter of the rope loop on the falling speed; driving the push rod through the compensation hydraulic cylinder, with better stability.

[0036] In the present invention, by providing a first one-way valve, the hydraulic oil in the compensation hydraulic cylinder can be prevented from flowing back, and the piston rod in the compensation hydraulic cylinder can be pushed outwards each time; the effect of delaying braking each time can be gradually accumulated.

[0037] During the installation and detection of the device of the present invention, hydraulic oil is conveyed to the hydraulic pump 3, the hydraulic directional control valve 6 and the brake pipeline to ensure rapid and effective braking during the operation of the device.

[0038] By arranging a water pipe, a sprinkler head and a water tank, the present invention can cool down the hydraulic brake; by arranging the needle-shaped oil cylinder 13 to connect with the switch 14, it can start spraying water mist for cooling while braking, and stop cooling after braking ends, thus avoiding waste of water.

[0039] By arranging a limit frame and two rollers 7, the position of the locking rope 9 is guided at all times, ensuring the extraction direction of the rope during operation and making it not easy to loosen and fall off.

[0040] Most components of the present invention are arranged inside the runner, making the structure more compact.

[0041] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A high-rise lifesaving device, comprising a rotating wheel (1) with a rope (9) wound around the outside, a hydraulic brake (8) for braking the rotating wheel, a hydraulic pump (3) for providing power for hydraulic oil, a hydraulic reversing valve (6) for controlling the start and stop of the brake, and a speed regulating flyweight (5) for driving the valve core (602) in the hydraulic reversing valve (6); the rotating wheel (1) is connected to the hydraulic pump (3) and the speed regulating flyweight (5); a first spring (601) is provided in the hydraulic reversing valve (6) for pushing the valve core (602) toward the speed regulating flyweight (5); the characteristics are as follows: The inlet and one of the outlets of the hydraulic reversing 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, a lever (12) is provided on one side of the compensating hydraulic cylinder (11), and the lever (12) rotates around its center; the hydraulic reversing valve (6) is provided with a push rod (603) for pushing the first spring (601) toward the speed regulating flyweight (5); the two ends of the lever (12) are respectively in contact with the piston rod and the push rod (603) of the compensating hydraulic cylinder (11).

2. The high-rise lifesaving device according to claim 1, characterized in that: The compensation pipeline is provided with a first one-way valve (18) which only allows oil to flow in the direction of the compensation hydraulic cylinder (11).

3. The high-rise lifesaving device according to claim 2, characterized in that: The compensating pipeline is provided with a pressure relief valve (19).

4. The high-rise lifesaving device according to claim 1, characterized in that: The outer diameter of the rotating wheel (1) is 40 cm-120 cm.

5. The high-rise lifesaving device according to claim 1, characterized in that: The brake pipe is connected to a needle-type oil cylinder (13), the needle-type oil cylinder (13) is abutted 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 lifesaving device according to claim 1, characterized in that: The wheel (1) is provided with a cavity inside, and a fixing frame (4) is provided in the cavity; the fixing frame (4) is fixedly connected to the housing of a hydraulic pump (3), and the driving shaft of the hydraulic pump (3) is rotatably connected to the fixing frame (4); the hydraulic pump (3) is connected to an oil inlet pipeline, and a second one-way valve (20) is provided on the pipeline between the hydraulic pump (3) and the hydraulic reversing valve (6); and a speed regulating flyweight (5) is also rotatably connected to the fixing frame (4).

7. The high-rise lifesaving device according to claim 6, characterized in that: The hydraulic brake (8) comprises a brake cylinder (801) fixedly connected to a fixing frame (4), a brake block (802) fixedly connected to a piston rod of the brake cylinder (801), and a brake drum (803) fixedly connected to a rotating wheel; the brake drum (803) is located outside the fixing frame (4).

8. The high-rise lifesaving device according to claim 1, characterized in that: The rotating wheel (1) is provided with a side wall (101) on one side and an opening on the other side; a mounting groove is provided in the side wall (101); the inner wall of the mounting groove is fixedly connected to the outer ring of the planetary gear (2); the sun gear output shaft of the planetary gear (2) is fixedly connected to the driving shaft of the hydraulic pump (3); the speed regulating flyweight (5) comprises a rotating shaft (501), a movable sleeve (502) movably connected to the rotating shaft, and a flyweight (503) driving the movable sleeve (502) to move; the sun gear output shaft of the planetary gear (2) is connected to the rotating shaft (501) via a gear transmission, and the movable sleeve (502) is connected to a valve core (602) of a hydraulic reversing valve (6).

9. The high-rise lifesaving device according to claim 8, characterized in that: The planetary gear (2) is provided with a planet carrier (201), the planet carrier (201) is fixedly connected to a planet carrier shaft (202), and the planet carrier shaft (202) is rotatably connected to the side wall (101); the planet carrier shaft (202) is fixedly connected to one end of a stop rod (21) located on one side of the side wall (101), and the other end of the stop rod (21) is fixedly connected to a limit frame, and two rollers (7) are relatively arranged on the limit frame.

10. The high-rise lifesaving device according to claim 1, characterized in that: A second spring (604) is provided on the outer side of the push rod (603) for pushing the push rod (603) towards the first spring (601); a threaded adjustment nut (605) is provided on the hydraulic reversing valve (6), and one end of the second spring (604) is in contact with the adjustment nut (605).

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