Building elevator intelligent security device

Abstract

The invention discloses an intelligent security device for a building elevator, and relates to the technical field of intelligent security for elevators. The device comprises a speed limiter, a bottom pulley, a brake rail, and a safety clamp. The speed limiter and the bottom pulley are connected by a steel wire rope, and the top of the safety clamp is connected to the bottom of a car by a fastener. A deflection rod is movably mounted on the safety clamp through a connecting column, and the end of the deflection rod is connected to a clamping plate clamped on the steel wire rope by a hinge. The invention can limit the speed of the steel wire rope movement by arranging a speed limiter, thereby preventing the car from running too fast. By arranging a deflection rod, the deflection rod can be deflected when the car runs too fast, thereby starting the safety clamp for braking. By arranging a roller brush, the surface of the brake rail can be cleaned, thereby ensuring the braking performance of the safety clamp. By arranging a cleaning rope, the cleaning rope can be used to block the bristles on the surface of the roller brush when the roller brush rotates, thereby cleaning the bristles.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent elevator security, and in particular to an intelligent security device for building elevators. Background Art

[0002] Elevators generally have four safety devices: multiple traction ropes, brake shoes, safety clamps, and buffers. In the traditional elevator hoist braking system, the braking method is as follows: when the car descends too fast, the motor will be used as an electric motor to slow down the car by generating electromagnetic resistance; in addition, the top pulley shaft of the wire rope will be locked by the brake configured on the connecting shaft of the worm reducer; however, both of these braking methods require the traction rope connected to the car to achieve the transmission speed. Once the traction rope breaks, the above two braking methods will fail, and safety clamps and buffers are needed to ensure the safety of the car.

[0003] In Chinese invention patent CN117775920B, an elevator safety clamp linkage device is disclosed, which can brake the car when it descends at an excessive speed even if the traction rope breaks. However, in general, when designing an elevator, the weight of the counterweight is designed to be half of the unloaded car mass plus the rated load weight. Therefore, the counterweight is several hundred kilograms heavier than the unloaded car. When the car is unloaded and the traction rope slips, it is easy for the counterweight to drag the car to the top. This invention and the current prior art can only prevent the car from descending at an excessive speed, and cannot brake the car when the car accelerates to rise. Moreover, the elevator safety clamp is not in contact with the brake rail under normal conditions. The brake rail will inevitably be contaminated with oil and dust in the elevator passage for a long time. In addition, it will gradually accumulate to form sludge due to the influence of temperature and humidity. When the safety clamp needs to be clamped on the brake rail, the problem of insufficient braking force will occur at the same time, which will not only increase the braking distance, but also in severe cases, the braking force may be insufficient to overcome gravity, causing the car to directly accelerate and fall. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an intelligent security device for building elevators, which has the advantages of being able to brake the car when it rises or descends at an excessive speed and being able to prevent oil stains from affecting the braking force, thereby solving the problems raised in the background technology.

[0005] In order to achieve the above-mentioned purpose of being able to brake the car when the car rises and descends at an overspeed and being able to prevent oil pollution from affecting the braking force, the present invention provides the following technical solutions: an intelligent security device for a building elevator, comprising a speed limiter, a bottom pulley, a brake rail, and a safety clamp, wherein the speed limiter and the bottom pulley are connected by a steel wire rope, the safety clamp is slidably clamped on both sides of the brake rail, the top of the safety clamp is connected to the bottom of the car by a fastener, a deflection rod is movably installed on the safety clamp through a connecting column, the end of the deflection rod is connected to a clamping plate clamped on the steel wire rope by a hinge, and the other end of the connecting column is fixedly connected to a rotating column symmetrically arranged with the deflection rod;

[0006] The side wall of the brake rail is provided with a tooth groove, a rolling wheel meshing with the tooth groove is provided inside the safety clamp through a bearing, a side bevel gear is provided on the side of the rolling wheel, a transmission rod is movably connected to the inside of the safety clamp through a bearing, an intermediate gear meshing with the side bevel gear is provided in the middle of the transmission rod, a bottom bevel gear is keyed to the bottom of the transmission rod, and roller brushes for cleaning the side of the brake rail are provided on both sides of the bottom of the safety clamp, and a rotating shaft of the roller brush is inserted into the interior of the safety clamp and keyed to a cleaning gear meshing with the bottom bevel gear;

[0007] The safety clamp has two brake plates symmetrically arranged about the brake rail, the cross-section of the brake plate is an isosceles trapezoid that matches the inner wall of the safety clamp, a wear-resistant layer is arranged on the side of the brake plate that contacts the brake rail, plug-in columns are movably inserted into the two brake plates, the middle of the plug-in columns passes through a vertical groove arranged inside the safety clamp, and a sliding plate is fixedly connected to the other end, and a pull-back elastic member sleeved on the plug-in column is connected between the sliding plate and the brake plate.

[0008] Preferably, the safety clamp is provided with a top brake hydraulic cylinder and a bottom brake hydraulic cylinder, which are symmetrically arranged up and down about the deflection rod, and an upper hydraulic rod and a lower hydraulic rod are respectively arranged at the top and bottom of the sliding plate. The top brake hydraulic cylinder is connected to the lower hydraulic rod through a high-pressure pipe, and the bottom brake hydraulic cylinder is connected to the upper hydraulic rod through a high-pressure pipe.

[0009] Preferably, the deflection rod and the rotating column are both provided with vertical downward pressure plates, and linkage grooves are opened on both sides of the safety clamp. The interior of the linkage groove is movably connected with the rotating rod through a pin shaft, and the exterior of the pin shaft is sleeved with a torsion spring that limits the rotation of the rotating rod.

[0010] Preferably, the outer end of the rotating rod is pressed against the pressure plate, the inner end of the rotating rod is movably connected to a push-pull connecting rod through a hinge, the bottom of the push-pull connecting rod is connected to an I-beam through a hinge, and a cleaning rope for cleaning the roller brush is provided at the bottom of the I-beam.

[0011] Preferably, a lubricating oil cavity is provided at the bottom of the safety clamp, a refueling bolt for adding lubricating oil to the lubricating oil cavity is provided on the side wall of the safety clamp, and a drain bolt for draining lubricating oil from the lubricating oil cavity is provided on the bottom wall of the safety clamp.

[0012] Preferably, an oil pump is provided on the bottom side wall of the safety clamp, an increasing gear for driving the oil pump is provided on the top of the oil pump, an oil pumping gear meshing with the increasing gear is provided at the bottom of the pullback elastic member, an oil inlet pipe inserted into the bottom of the oil inlet pipe is provided on one side of the bottom of the oil pump, and a filter ball is provided at the end of the oil inlet pipe.

[0013] Preferably, the inner wall of the safety clamp is provided with vertical lubrication grooves at equal intervals, the cross-section of the lubrication groove is T-shaped, one side of the sliding plate is slidably engaged in the interior of the lubrication groove, and an oil outlet pipe is provided on one side of the top of the oil pump, and the other end of the oil outlet pipe is connected to the top of the lubrication groove.

[0014] Preferably, a collecting groove is provided at the bottom of the lubrication groove, one end of the collecting groove is connected to an oil return pipe, and the other end of the oil return pipe is communicated with the lubrication oil chamber.

[0015] Preferably, the speed limiter includes a rotating pulley directly cooperating with the wire rope, and discs are provided on both sides of the rotating pulley. Rotating tubes are distributed in a circular array on the sides of the discs, and a telescopic rod is inserted into the interior of the rotating tube. A counterweight is fixedly connected to the end of the telescopic rod, and the counterweight is connected to the disc by a tensioning elastic member.

[0016] Preferably, two side plates are movably connected at both ends of the rotating shaft of the rotating rope pulley through bearings, a brake ring is provided on the inner side of the side plate, and a plurality of brake blocks cooperating with the counterweight block are provided in a ring array on the inner wall of the brake ring, and a mounting base plate is fixedly connected to the bottom of the side plate, bolt holes are provided at the four corners of the mounting base plate, and two rope holes are symmetrically provided in the middle of the mounting base plate.

[0017] Compared with the prior art, the present invention provides an intelligent security device for building elevators, which has the following beneficial effects:

[0018] The intelligent security device for building elevators can limit the speed of the wire rope movement by setting a speed limiter, thereby preventing the car from running too fast. When the car is running, whether it is moving up or down, the counterweight block inside the speed limiter will be stuck on the brake block when the speed is too fast, thereby further improving the safety of the elevator operation, preventing the car from falling and hitting the top.

[0019] The intelligent security device for building elevators, by setting a deflection rod, can deflect the deflection rod when the car runs too fast, thereby activating the safety clamp for braking, and a top brake hydraulic cylinder and a bottom brake hydraulic cylinder are respectively provided at the top and bottom of the deflection rod, so that timely braking can be achieved when the car rises or descends at an excessive speed, further improving the safety factor of elevator operation.

[0020] The intelligent security device for building elevators can clean the surface of the brake rail by arranging a roller brush, thereby ensuring the braking performance of the safety clamp, and after power transmission between the roller brush and the rolling wheel, the rotation direction of the roller brush can be controlled not to roll along the moving direction of the brake rail, thereby increasing the relative movement speed between the bristles on the surface of the roller brush and the brake rail, improving the cleaning ability of the brake rail surface, and further ensuring the braking performance.

[0021] The intelligent security device for building elevators is provided with a cleaning rope. When the roller brush rotates, the cleaning rope can be used to block the bristles on the surface of the roller brush, thereby cleaning the bristles. When the deflection rod moves, the rotating rod can be rotated. The position of the cleaning rope on the roller brush can be changed by the push-pull connecting rod, so that the things that pop out of the bristles move in the direction away from the brake rail, thereby improving the cleanliness of the brake rail and further ensuring the braking effect of the safety clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front perspective structural schematic diagram of the present invention;

[0023] Figure 2 It is a schematic diagram of the three-dimensional structure of the speed limiter of the present invention;

[0024] Figure 3 It is a schematic diagram of the cross-sectional three-dimensional structure of the speed limiter of the present invention;

[0025] Figure 4 It is a rear-view stereoscopic structural schematic diagram of the present invention;

[0026] Figure 5 For the present invention Figure 4 Schematic diagram of the structure at A in the middle;

[0027] Figure 6 For the present invention Figure 4 Schematic diagram of the structure at B in the middle;

[0028] Figure 7 It is a schematic diagram of the three-dimensional structure of the rotating column of the present invention;

[0029] Figure 8 This is a schematic diagram of the main three-dimensional structure of the safety gear of the present invention;

[0030] Fig. 9 This is a schematic diagram of the internal gear structure of the present invention;

[0031] Fig.10 This is a schematic diagram of the cross-sectional structure of the push-pull connecting rod of the present invention;

[0032] Fig.11 This is a schematic diagram of the three-dimensional structure of the push-pull connecting rod of the present invention;

[0033] Fig.12 It is a schematic diagram of the cross-sectional structure of the sliding plate of the present invention;

[0034] Fig.13 It is a schematic diagram of the three-dimensional structure of the plug-in column of the present invention;

[0035] Fig.14 It is a schematic diagram of the cross-sectional structure of the safety gear of the present invention;

[0036] Fig.15 For the present invention Fig.14 Schematic diagram of the structure at point C in the middle.

[0037] In the figure: 1. speed limiter; 101. mounting base plate; 102. bolt hole; 103. rope hole; 104. side plate; 105. brake ring; 106. rotating rope pulley; 107. brake block; 108. rotating tube; 109. telescopic rod; 110. tension elastic member; 111. counterweight; 2. wire rope; 3. bottom pulley; 4. brake rail; 401. tooth groove; 5. safety clamp; 501. clamping plate; 502. deflection rod; 504. top brake hydraulic cylinder; 505. bottom brake hydraulic cylinder; 506. connecting column; 507. fastener; 508. rotating column; 6. car; 701. pressure plate; 702. rotating rod; 703. linkage groove; 704. 04, I-beam; 705, cleaning rope; 706, push-pull connecting rod; 707, torsion spring; 800, vertical groove; 801, roller brush; 802, rolling wheel; 803, brake plate; 804, side bevel gear; 805, intermediate gear; 806, transmission rod; 807, bottom bevel gear; 808, cleaning gear; 809, pull-back elastic member; 810, plug-in column; 811, sliding plate; 812, upper hydraulic rod; 813, lower hydraulic rod; 900, lubrication groove; 901, oil pump gear; 902, speed increasing gear; 903, oil pump; 904, oil inlet pipe; 905, filter ball; 906, oil outlet pipe; 907, oil return pipe; 908, lubricating oil chamber. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] For an embodiment of the present invention, please refer to Figures 1 to 15 , including a speed limiter 1, a bottom pulley 3, a brake rail 4, and a safety clamp 5. The speed limiter 1 and the bottom pulley 3 are connected by a steel wire rope 2. The safety clamp 5 is slidably clamped on both sides of the brake rail 4. The top of the safety clamp 5 is connected to the bottom of the car 6 by a fastener 507. A deflection rod 502 is movably installed on the safety clamp 5 through a connecting column 506. The end of the deflection rod 502 is connected to a clamping plate 501 clamped on the steel wire rope 2 through a hinge. The other end of the connecting column 506 is fixedly connected to a rotating column 508 symmetrically arranged with the deflection rod 502.

[0040] The side wall of the brake rail 4 is provided with a tooth groove 401, and a rolling wheel 802 meshing with the tooth groove 401 is provided inside the safety clamp 5 through a bearing, and a side bevel gear 804 is provided on the side of the rolling wheel 802. A transmission rod 806 is movably connected to the inside of the safety clamp 5 through a bearing, and an intermediate gear 805 meshing with the side bevel gear 804 is provided in the middle of the transmission rod 806. A bottom bevel gear 807 is keyed to the bottom of the transmission rod 806. Rolling brushes 801 for cleaning the side of the brake rail 4 are provided on both sides of the bottom of the safety clamp 5. The rotating shaft of the rolling brush 801 is inserted into the interior of the safety clamp 5 and is keyed to a cleaning gear 808 meshing with the bottom bevel gear 807.

[0041] During specific use, when the car 6 moves up and down, the safety clamp 5 is driven to move up and down. During the movement of the safety clamp 5, since the brake rail 4 is provided with a tooth groove 401, it can cooperate with the rolling wheel 802. When the safety clamp 5 moves up and down, the rolling wheel 802 will rotate. After the power is transmitted to the roller brush 801 through the side bevel gear 804, the middle gear 805, the transmission rod 806, the bottom bevel gear 807, and the cleaning gear 808, the roller brush 801 can be rotated, thereby cleaning the side of the brake rail 4, preventing the adhesion of dust and oil caused by long-term cleaning, and avoiding the reduction of braking force.

[0042] Two brake plates 803 are symmetrically arranged on the safety clamp 5 with respect to the brake rail 4. The cross-section of the brake plate 803 is an isosceles trapezoid that fits the inner wall of the safety clamp 5. A wear-resistant layer is arranged on the side of the brake plate 803 that contacts the brake rail 4. A plug-in column 810 is movably inserted into the two brake plates 803. The middle part of the plug-in column 810 passes through the vertical groove 800 arranged inside the safety clamp 5, and the other end is fixedly connected with a sliding plate 811. A pull-back elastic member 809 sleeved on the plug-in column 810 is connected between the sliding plate 811 and the brake plate 803.

[0043] During specific use, the safety clamp 5 is braked by sliding the sliding plate 811 up and down. When the sliding plate 811 slides up or down, since the cross-section of the brake plate 803 is an isosceles trapezoid that fits the inner wall of the safety clamp 5, when the brake plate 803 is driven by the plug-in column 810 to move up and down, the brake plate 803 will approach the brake rail 4 along the inclined surface. After the brake plate 803 contacts the brake rail 4, the two brake plates 803 will clamp the brake rail 4 through the inclined surface, and at the same time, the braking force will also be transmitted to the safety clamp 5 through the inclined surface, thereby forming a brake to stop the car 6 from moving.

[0044] like Figure 5 and Fig.12 As shown, the safety clamp 5 is provided with a top brake hydraulic cylinder 504 and a bottom brake hydraulic cylinder 505, and the top brake hydraulic cylinder 504 and the bottom brake hydraulic cylinder 505 are symmetrically arranged about the deflection rod 502, and an upper hydraulic rod 812 and a lower hydraulic rod 813 are respectively arranged at the top and bottom of the sliding plate 811, and the top brake hydraulic cylinder 504 is connected to the lower hydraulic rod 813 through a high-pressure pipe, and the bottom brake hydraulic cylinder 505 is connected to the upper hydraulic rod 812 through a high-pressure pipe.

[0045] During specific use, after the car 6 exceeds the speed limiter 1, the movement of the wire rope 2 is limited, so the deflection rod 502 will be driven to deflect. When the deflection rod 502 is subjected to force to press the top brake hydraulic cylinder 504 or the bottom brake hydraulic cylinder 505, the internal hydraulic oil will be discharged, so that the upper hydraulic rod 812 or the lower hydraulic rod 813 is used to push the sliding plate 811 to move, thereby achieving the purpose of automatic braking when the car 6 exceeds the speed limit.

[0046] like Figure 5-Figure 7 , Fig.10 and Fig.11 As shown, a vertical downward pressure plate 701 is provided on the deflection rod 502 and the rotating column 508, and a linkage groove 703 is opened on both sides of the safety clamp 5. The interior of the linkage groove 703 is movably connected with the rotating rod 702 through a pin shaft, and the outside of the pin shaft is sleeved with a torsion spring 707 for limiting the rotation of the rotating rod 702.

[0047] The outer end of the rotating rod 702 is pressed against the pressure plate 701, and the inner end of the rotating rod 702 is movably connected to a push-pull connecting rod 706 through a hinge. The bottom of the push-pull connecting rod 706 is connected to an I-beam 704 through a hinge, and a cleaning rope 705 for cleaning the roller brush 801 is provided at the bottom of the I-beam 704.

[0048] During specific use, when the car 6 moves up and down, the deflection rod 502 is needed to drive the steel wire rope 2 to move. Since the deflection rod 502 is not in contact with the top brake hydraulic cylinder 504 and the bottom brake hydraulic cylinder 505, the steel wire rope 2 can be pulled only after the deflection rod 502 is limited by the top brake hydraulic cylinder 504 or the bottom brake hydraulic cylinder 505. At this time, since the steel wire rope 2 can move freely, after the deflection rod 502 contacts the top brake hydraulic cylinder 504 or the bottom brake hydraulic cylinder 505, the hydraulic oil inside the top brake hydraulic cylinder 504 or the bottom brake hydraulic cylinder 505 will not be discharged, but the deflection rod 502 and the rotating column 508 will not be discharged. The deflection can make the pressure plate 701 move up and down. When the pressure plate 701 moves up and down, since the torsion spring 707 is provided in the middle of the rotating rod 702, the rotating rod 702 will move up and down following the deflection rod 502. The I-beam 704 is driven by the push-pull connecting rod 706 to move up and down, so that when the roller brush 801 moves upward, the cleaning rope 705 is located in the upper middle part of the roller brush 801. When the roller brush 801 rotates, it is helpful to eject objects on the bristles of the roller brush 801 away from the brake rail 4, preventing the cleaned objects from returning to the brake rail 4, further increasing the cleanliness of the surface of the brake rail 4, thereby ensuring normal braking force.

[0049] like Figure 3 , Fig. 9 , Fig.14 and Fig.15 As shown, a lubricating oil chamber 908 is provided at the bottom of the safety clamp 5, a refueling bolt for adding lubricating oil to the lubricating oil chamber 908 is provided on the side wall of the safety clamp 5, and an oil drain bolt for draining the lubricating oil from the lubricating oil chamber 908 is provided on the bottom wall of the safety clamp 5.

[0050] An oil pump 903 is provided on the bottom side wall of the safety clamp 5, a speed increasing gear 902 for driving the oil pump 903 is provided on the top of the oil pump 903, an oil pumping gear 901 meshing with the speed increasing gear 902 is provided on the bottom of the pull-back elastic member 809, an oil inlet pipe 904 inserted into the bottom of the oil inlet pipe 904 is provided on one side of the bottom of the oil pump 903, and a filter ball 905 is provided on the end of the oil inlet pipe 904.

[0051] The inner wall of the safety clamp 5 is provided with vertical lubrication grooves 900 at equal intervals. The cross-section of the lubrication groove 900 is T-shaped. One side of the sliding plate 811 is slidably engaged in the interior of the lubrication groove 900. An oil outlet pipe 906 is provided on one side of the top of the oil pump 903. The other end of the oil outlet pipe 906 is connected to the top of the lubrication groove 900.

[0052] A collecting groove is provided at the bottom of the lubricating groove 900 , one end of the collecting groove is connected to an oil return pipe 907 , and the other end of the oil return pipe 907 is communicated with the lubricating oil chamber 908 .

[0053] During specific use, during the lifting and lowering process of the car 6, the rotation of the oil pump gear 901 drives the speed increasing gear 902 to make the oil pump 903 work. After the lubricating oil is filtered by the filter ball 905, it is discharged from the oil outlet pipe 906, so that the lubricating oil reaches the top of the lubrication groove 900. Since the gears rotate slowly during movement, the lubricating oil will not be pumped out too quickly. Under the action of gravity, the lubricating oil slides down along the inner wall of the lubrication groove 900, and after contacting the sliding plate 811, it lubricates the position where the sliding plate 811 and the lubrication groove 900 rub against each other. After the lubricating oil flows downward to the bottom of the lubrication groove 900, it will flow back to the lubricating oil chamber 908 from the return oil pipe 907, so that it can be pumped out again to lubricate the inside of the lubrication groove 900.

[0054] like Figure 1-Figure 3 As shown, the speed limiter 1 includes a rotating sheave 106 that directly cooperates with the wire rope 2. Discs are provided on both sides of the rotating sheave 106. Rotating tubes 108 are distributed in a ring array on the sides of the discs. A telescopic rod 109 is inserted into the interior of the rotating tube 108. A counterweight 111 is fixedly connected to the end of the telescopic rod 109. The counterweight 111 is connected to the disc by a tensioning elastic member 110.

[0055] Two ends of the rotating shaft of the rotating rope pulley 106 are movably connected to two side plates 104 through bearings. A brake ring 105 is arranged on the inner side of the side plate 104. The inner wall of the brake ring 105 is arranged in a ring array with multiple brake blocks 107 cooperating with the counterweight block 111. The bottom of the side plate 104 is fixedly connected to the mounting base plate 101. Bolt holes 102 are opened at the four corners of the mounting base plate 101, and two rope holes 103 are symmetrically opened in the middle of the mounting base plate 101.

[0056] During specific use, when the steel wire rope 2 rotates too fast, it can drive the rotating sheave 106 to rotate at high speed. Since counterweight blocks 111 are arranged in a circular array on both sides of the rotating sheave 106, the counterweight blocks 111 will be thrown outward under the action of centrifugal force, and the telescopic rod 109 will extend from the inside of the rotating tube 108 to stretch the tensioning elastic member 110. After the counterweight block 111 reaches a position where it can be clamped with the brake block 107, the brake ring 105 can be used to lock the rotating sheave 106. At this time, the steel wire rope 2 slips on the rotating sheave 106, causing the car 6 to start braking.

[0057] The specific steps and principles of this device are as follows:

[0058] First, when the elevator starts running, if the car 6 is moving downward, Figure 5As shown, the deflection rod 502 can be deflected upward, so that the deflection rod 502 contacts the top brake hydraulic cylinder 504. However, at this time, the car 6 is not overspeeding, and the deflection rod 502 does not press tightly after contacting the top brake hydraulic cylinder 504, and the hydraulic oil in the top brake hydraulic cylinder 504 does not flow out. When the car 6 rises, the deflection rod 502 contacts the bottom brake hydraulic cylinder 505 downward;

[0059] At the same time, if Figure 4 and Fig. 9 As shown, when the car 6 moves downward, due to the meshing of the rolling wheel 802 and the tooth groove 401, when the safety clamp 5 follows the car 6 to descend, the rolling wheel 802 will be driven to rotate, and the power is transmitted to the roller brush 801 through the transmission of the side bevel gear 804, the middle gear 805, the transmission rod 806, the bottom bevel gear 807, and the cleaning gear 808, so that the roller brush 801 rotates while descending, and the brake rail 4 moves upward relative to the brush bristles at the position where the brush bristles on the roller brush 801 contact, and the brush bristles move downward relative to the brake rail 4, so that the surface of the brake rail 4 can be cleaned as much as possible. When the car 6 rises, the brake rail 4 moves downward relative to the brush bristles, and the brush bristles move upward relative to the brake rail 4;

[0060] When the deflection rod 502 deflects upward, Figure 7 As shown, since the deflection rod 502 and the rotating column 508 are connected by the same connecting column 506, the deflection rod 502 and the rotating column 508 can be rotated at the same time, so that the pressure plates 701 on both sides rotate upward, as shown in FIG. Fig.10 and Fig.11 As shown, a torsion spring 707 is provided in the middle of the rotating rod 702. The torsion spring 707 causes the outer end of the rotating rod 702 to rotate upward and always keep close to the pressure plate 701. The inner end of the rotating rod 702 also rotates downward under the action of the torsion spring 707, and the push-pull connecting rod 706 is used to push the I-beam 704 downward. Figure 6 As shown, the cleaning rope 705 is moved to the lower middle position of the roller brush 801, and the bristles at the contact position of the roller brush 801 and the cleaning rope 705 rotate upward. After the bristles pass through the cleaning rope 705, the debris on the bristles will be ejected, and the ejection direction is obliquely upward away from the brake rail 4, so as to prevent the cleaned materials from attaching to the brake rail 4 again. When the car 6 rises, the cleaning rope 705 is moved to the upper middle position of the roller brush 801, and the bristles at the contact position of the roller brush 801 and the cleaning rope 705 rotate downward, which can also eject the materials on the bristles and keep them away from the brake rail 4.

[0061] When the car 6 is running upward, Fig. 9 As shown, the transmission rod 806 can also drive the oil pump gear 901 to rotate. Fig.14 and 15As shown in FIG. 1 , the speed increasing gear 902 meshing with the oil pump gear 901 can drive the oil pump 903 to work, and the lubricating oil is filtered by the filter ball 905 and then discharged from the oil outlet pipe 906, so that the lubricating oil reaches the top of the lubrication groove 900. Since the gear rotates slowly during the movement, the lubricating oil will not be pumped out too quickly. Fig.12 As shown, under the action of gravity, the lubricating oil slides down along the inner wall of the lubricating groove 900, and after contacting the sliding plate 811, lubricates the position where the sliding plate 811 and the lubricating groove 900 rub against each other. After the lubricating oil flows downward to the bottom of the lubricating groove 900, it will flow back to the lubricating oil chamber 908 from the oil return pipe 907, so as to be pumped out again to lubricate the inside of the lubricating groove 900.

[0062] When the speed of the car 6 is too fast, the deflection rod 502 will first drive the steel wire rope 2 to move at a high speed. When the steel wire rope 2 rotates too fast, it can drive the rotating rope wheel 106 to rotate at a high speed. Since the counterweight blocks 111 are arranged in a circular array on both sides of the rotating rope wheel 106, the counterweight blocks 111 will be thrown outward under the action of centrifugal force, and the telescopic rod 109 will extend from the inside of the rotating tube 108 to stretch the tension elastic member 110. After the counterweight block 111 reaches a position where it can be clamped with the brake clamp 107, the brake ring 105 can be used to lock the rotating rope wheel 106. At this time, the steel wire rope 2 slips on the rotating rope wheel 106, and the friction between the steel wire rope 2 and the rotating rope wheel 106 is used to brake the steel wire rope 2;

[0063] When the wire rope 2 is braked, the force on the deflection rod 502 will increase. When the car 6 descends at high speed, the middle part of the deflection rod 502 presses the top brake hydraulic cylinder 504. When the car 6 rises at high speed, the middle part of the deflection rod 502 presses the bottom brake hydraulic cylinder 505. After the hydraulic oil inside the top brake hydraulic cylinder 504 enters the lower hydraulic rod 813, the sliding plate 811 is pushed up, and the brake plate 803 moves up under the drive of the plug-in column 810. Since the cross-section of the brake plate 803 is the same as that of the mounting plate The inner wall of the full clamp 5 fits the isosceles trapezoid. When the brake plate 803 is driven by the plug-in column 810 to move up and down, the brake plate 803 will approach the brake rail 4 along the inclined surface. After the brake plate 803 contacts the brake rail 4, the two brake plates 803 will clamp the brake rail 4 through the inclined surface, and at the same time, the braking force will be transmitted to the safety clamp 5 through the inclined surface, thereby forming a brake to stop the movement of the car 6. When the car 6 descends at high speed, the two brake plates 803 are moved downward in the same way to brake the car 6.

[0064] The above description is only a preferred specific implementation mode of the present invention. Although the embodiments of the present invention have been shown and described, it can be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents. The protection scope of the present invention is not limited to the above embodiments. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, can make equivalent substitutions or changes according to the technical solution and inventive concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An intelligent security device for a building elevator, comprising a speed limiter (1), a bottom pulley (3), a brake rail (4), and a safety clamp (5), wherein the speed limiter (1) and the bottom pulley (3) are connected by a steel wire rope (2), the safety clamp (5) is slidably engaged on both sides of the brake rail (4), and the top of the safety clamp (5) is connected to the bottom of the car (6) by a fastener (507), characterized in that: A deflection rod (502) is movably mounted on the safety clamp (5) via a connecting column (506); the end of the deflection rod (502) is connected to a clamping plate (501) clamped on the steel wire rope (2) via a hinge; and the other end of the connecting column (506) is fixedly connected to a rotating column (508) symmetrically arranged with the deflection rod (502); The side wall of the brake rail (4) is provided with a tooth groove (401), a rolling wheel (802) meshing with the tooth groove (401) is provided inside the safety clamp (5) via a bearing, a side bevel gear (804) is provided on the side of the rolling wheel (802), a transmission rod (806) is movably connected inside the safety clamp (5) via a bearing, an intermediate gear (805) meshing with the side bevel gear (804) is provided in the middle of the transmission rod (806), a bottom bevel gear (807) is keyed to the bottom of the transmission rod (806), rolling brushes (801) for cleaning the side of the brake rail (4) are provided on both sides of the bottom of the safety clamp (5), and a rotating shaft of the rolling brush (801) is inserted into the interior of the safety clamp (5) and is keyed to a cleaning gear (808) meshing with the bottom bevel gear (807); The safety clamp (5) is provided with two brake plates (803) symmetrically with respect to the brake rail (4), the cross section of the brake plate (803) is an isosceles trapezoid that matches the inner wall of the safety clamp (5), the side of the brake plate (803) that contacts the brake rail (4) is provided with a wear-resistant layer, the two brake plates (803) are internally movably plugged with a plug-in column (810), the middle part of the plug-in column (810) passes through a vertical groove (800) provided inside the safety clamp (5), and the other end is fixedly connected with a sliding plate (811), and a pull-back elastic member (809) sleeved on the plug-in column (810) is connected between the sliding plate (811) and the brake plate (803); The deflection rod (502) and the rotating column (508) are both provided with a pressing plate (701) pointing vertically downwards, and linkage grooves (703) are provided on both sides of the safety clamp (5). The interior of the linkage groove (703) is movably connected to the rotating rod (702) via a pin shaft, and the exterior of the pin shaft is sleeved with a torsion spring (707) for limiting the rotation of the rotating rod (702); the outer end of the rotating rod (702) is tightly pressed against the pressing plate (701), and the inner end of the rotating rod (702) is movably connected to a push-pull connecting rod (706) via a hinge, and the bottom of the push-pull connecting rod (706) is connected to an I-shaped rod (704) via a hinge, and a cleaning rope (705) for cleaning the roller brush (801) is provided at the bottom of the I-shaped rod (704); An oil pump (903) is disposed on the bottom side wall of the safety clamp (5); a speed increasing gear (902) for driving the oil pump (903) is disposed on the top of the oil pump (903); an oil pumping gear (901) meshing with the speed increasing gear (902) is disposed at the bottom of the pullback elastic member (809); an oil inlet pipe (904) inserted into the bottom of the oil inlet pipe (904) is disposed on one side of the bottom of the oil pump (903); a filter ball (905) is disposed at the end of the oil inlet pipe (904); and the oil pumping gear (901) is connected to the bottom of the transmission rod (806); The safety clamp (5) is provided with a top brake hydraulic cylinder (504) and a bottom brake hydraulic cylinder (505), the top brake hydraulic cylinder (504) and the bottom brake hydraulic cylinder (505) are symmetrically arranged about the deflection rod (502) up and down, the top and bottom of the sliding plate (811) are respectively provided with an upper hydraulic rod (812) and a lower hydraulic rod (813), the top brake hydraulic cylinder (504) is connected to the lower hydraulic rod (813) through a high-pressure pipe, and the bottom brake hydraulic cylinder (505) is connected to the upper hydraulic rod (812) through a high-pressure pipe; The bottom of the safety clamp (5) is provided with a lubricating oil chamber (908), the side wall of the safety clamp (5) is provided with a refueling bolt for adding lubricating oil to the inside of the lubricating oil chamber (908), and the bottom wall of the safety clamp (5) is provided with an oil drain bolt for draining the lubricating oil from the lubricating oil chamber (908); The inner wall of the safety clamp (5) is provided with vertical lubrication grooves (900) at equal intervals, the cross section of the lubrication groove (900) is T-shaped, one side of the sliding plate (811) is slidably engaged in the interior of the lubrication groove (900), and one side of the top of the oil pump (903) is provided with an oil outlet pipe (906), the other end of the oil outlet pipe (906) is connected to the top of the lubrication groove (900); A collecting groove is provided at the bottom of the lubricating groove (900), one end of the collecting groove is connected to an oil return pipe (907), and the other end of the oil return pipe (907) is connected to the lubricating oil chamber (908).

2. The intelligent security device for building elevators according to claim 1 is characterized in that: The speed limiter (1) comprises a rotating rope wheel (106) directly matched with the steel wire rope (2), the rotating rope wheel (106) is provided with discs on both sides, the sides of the discs are provided with rotating tubes (108) distributed in a ring array, the rotating tubes (108) are inserted with telescopic rods (109) inside, the ends of the telescopic rods (109) are fixedly connected with counterweights (111), and the counterweights (111) are connected to the discs via a tensioning elastic member (110).

3. The intelligent security device for building elevators according to claim 2 is characterized in that: Two side plates (104) are movably connected at both ends of the rotating shaft of the rotating rope wheel (106) via bearings; a brake ring (105) is arranged on the inner side of the side plate (104); a plurality of brake blocks (107) cooperating with a counterweight (111) are arranged in a circular array on the inner wall of the brake ring (105); a mounting base plate (101) is fixedly connected to the bottom of the side plate (104); bolt holes (102) are provided at four corners of the mounting base plate (101); and two rope holes (103) are symmetrically provided in the middle of the mounting base plate (101).

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