A protective buffer device for an elevator

Abstract

The application discloses a protective buffering device for an elevator, which comprises an elevator shaft, a car and two protective buffering devices. During the process of ascending and descending of the elevator, the rollers drive the wheel disc to rotate forward and reversely, thereby driving the rotor of the micro generator to rotate forward and reversely, making the micro generator generate forward and reverse currents, and making the first electromagnet change the magnetic pole. Meanwhile, the elevator generates the phenomena of overweight and weightlessness, making the circular arc slide post slide up and down in the circular arc slide groove, changing the orientation of the first electromagnet and being opposite to the first permanent magnet. When the elevator falls to the bottom, the magnetic field of the first electromagnet increases and repels the first permanent magnet, delaying the descending speed of the car. When the elevator hits the top, the contact between the contact switch and the contact block and the commutator change the current direction of the micro generator, making the magnetic pole of the first electromagnet change again and be the same as that of the first permanent magnet, thereby delaying the ascending speed of the car and achieving the effect of protection and buffering.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of elevator, and particularly relates to a protective buffering device for elevator. BACKGROUND

[0002] The elevator refers to power-driven electromechanical equipment for lifting or parallel conveying of people and goods by using a box body running along a rigid guide rail or a ladder (step) running along a fixed line, including passenger (cargo) elevator, escalator and moving sidewalk, etc. In simple terms, it is a fixed lifting device serving a specified floor. Main components of the elevator include a car, car guide rail, control cabinet, counterweight, guide rail, main machine, brake, speed limiter, steel wire rope, buffer zone, safety gear, frequency converter, mainboard, up-down speed changer, up-down limit, and random call.

[0003] At present, during the up-and-down movement of the car-type elevator, the safety gear and the buffer can play the roles of braking protection and buffering protection. When the car-type elevator fails and the top collision or bottom drop phenomenon occurs, the car of the elevator will quickly rise or quickly descend. Therefore, the buffering effect of the buffer at the top or bottom of the elevator shaft is limited, which can easily cause casualties and damage to the elevator, so a protective buffering device capable of delaying the quick rise and quick descent of the elevator car is designed. SUMMARY

[0004] The present application aims to provide a protective buffering device for elevator to solve the problem that the buffering effect of the buffer at the top or bottom of the elevator shaft is limited when the car-type elevator fails and the top collision or bottom drop phenomenon occurs, which can easily cause casualties and damage to the elevator.

[0005] In order to achieve the above object, the application provides the following technical scheme: a protective buffer device for an elevator, comprising an elevator shaft, a car and two protective buffer devices, longitudinal convex-shaped guide rails are installed on the inner walls of the left and right sides of the elevator shaft, a plurality of first permanent magnets are installed on the side of the front and rear ends of the two convex-shaped guide rails close to the inner wall of the elevator shaft, a contact block is installed on the side of the upper end of the two convex-shaped guide rails close to the car, safety tongs are installed on the side of the left and right ends of the car close to the convex-shaped guide rails, three rollers are installed on the side of the upper and lower ends of the two safety tongs close to the convex-shaped guide rails, the three rollers are distributed in a triangular shape on the outer wall of the convex-shaped guide rail, through hole mounting seats are installed on the upper and lower ends of the two safety tongs, micro generators are installed inside the four through hole mounting seats, the motor shafts of the micro generators extend to the edges of the rollers close to the car, wheel discs are sleeved on the outer walls of the motor shafts of the four micro generators, the edges of the wheel discs are in contact with the edges of the rollers close to the car, a plurality of grooves are formed in the front and rear ends of the two safety tongs, two circular arc sliding grooves are symmetrically formed on the side walls on both sides of each groove, a first electromagnet is movably arranged between the two circular arc sliding grooves, two circular arc sliding columns are symmetrically fixed on the two sides of the first electromagnet, the circular arc sliding columns on the two sides of the first electromagnet are respectively and correspondingly slidably arranged in the circular arc sliding grooves on the two sides, the upper and lower ends of each circular arc sliding column are connected with the upper and lower inner walls of the circular arc sliding groove through a second spring, and a contact switch is installed on the side of the upper and lower ends of the two safety tongs close to the convex-shaped guide rail.

[0006] Preferably, the protective buffer device comprises a first buffer mechanism, a second buffer mechanism and a magnetic force buffer mechanism, the second buffer mechanism is internally provided with the magnetic force buffer mechanism, and the upper surface of the second buffer mechanism is provided with the first buffer mechanism.

[0007] Preferably, the second buffer mechanism comprises a supporting bottom plate, speed reduction buffer assemblies are arranged at the upper surfaces of the four corners of the supporting bottom plate, a supporting top plate is installed at the upper ends of the four speed reduction buffer assemblies, and a second force unloading buffer assembly is arranged between the supporting bottom plate and the supporting top plate.

[0008] Preferably, the speed reduction buffer assembly comprises a sleeve rod welded to the upper surface of the support bottom plate, a conical column extending upward at the bottom center of the sleeve rod, a T-shaped inner rod slidingly connected to the inside of the upper side of the sleeve rod, the upper end of the T-shaped inner rod extending out of the upper surface of the sleeve rod and welded to the lower surface of the support top plate, a longitudinal through circular groove being formed in the middle of the T-shaped inner rod, two symmetrical Chinese character-shaped anti-disengagement circular grooves being formed in the lower side of the T-shaped inner rod and communicating with the through circular groove, a slope square column slidingly connected to the side of the two Chinese character-shaped anti-disengagement circular grooves close to the through circular groove and extending into the inside of the through circular groove, a T-shaped circular rod being welded to the middle of the end of the two slope square columns away from the through circular groove and located in the inside of the Chinese character-shaped anti-disengagement circular groove, a seventh spring being sleeved to the outer wall of the two T-shaped circular rods and located in the inside of the Chinese character-shaped anti-disengagement circular groove, and a brake column being arranged at the other end of the two T-shaped circular rods and located in the inside of the Chinese character-shaped anti-disengagement circular groove.

[0009] Preferably, the secondary force unloading buffer assembly comprises eight first through-hole movable columns, four of which are welded to the upper surface of the support bottom plate and the other four of which are welded to the lower surface of the support top plate, eight first guide rods being welded between the eight first through-hole movable columns, two first through-hole movable columns being slidingly sleeved to the outer wall of each of the eight first guide rods, four symmetrical buffers being arranged on the upper and lower sides of each of the eight first through-hole movable columns, a plurality of sixth springs being arranged on the inner wall of the side of each of the thirty-two buffers away from the first guide rod, a circular arc supporting plate being arranged at the other end of each of the plurality of sixth springs and located in the inside of the open circular groove, a ball being rotatably connected to the inside of the side of each of the thirty-two buffers close to the first guide rod, the ball extending out of the buffer and rolling on the outer wall of the first guide rod, the outer wall of the ball being in contact with the inner wall of the circular arc supporting plate, a third spring being sleeved to the outer wall of each of the eight first guide rods, and the two ends of the third spring being in contact with the first through-hole movable column and the fixed square column, respectively, and four shear type support frames being arranged between the eight first through-hole movable columns.

[0010] Preferably, the middle part of the first guide rod is a circular rod, the two sides of the first guide rod are circular table rods, and the diameter of the two sides of the first guide rod is greater than the diameter of the middle part of the first guide rod.

[0011] Preferably, the primary buffer mechanism comprises a buffer mounted in the middle of the upper surface of the support top plate, the outer wall of the telescopic rod of the buffer is sleeved with a fourth spring, the upper end of the buffer is provided with a connecting plate, the lower surface of the connecting plate is in contact with the top of the fourth spring, the middle of the upper surface of the connecting plate is provided with a silica gel pad, and a primary force relieving and buffering assembly is arranged between the four end surfaces of the connecting plate and the support top plate.

[0012] Preferably, the primary force relieving and buffering assembly comprises a second guide rod, the two ends of the second guide rod are welded with connecting blocks, the connecting blocks are welded with the upper surface of the support top plate, the outer wall of the second guide rod is sleeved with a second through-hole movable column on the side close to the buffer, the second through-hole movable column is located between the two connecting blocks, the outer wall of the second guide rod is sleeved with a fifth spring on the side away from the buffer, one end of the fifth spring is in contact with the second through-hole movable column, and the other end is in contact with the connecting block away from the buffer, and a connecting rod is rotatably connected between the second through-hole movable column and the connecting plate.

[0013] Preferably, the magnetic force buffer mechanism comprises a second electromagnet and a second permanent magnet, the second electromagnet is mounted in the middle of the upper surface of the support bottom plate, the second permanent magnet is mounted in the middle of the lower surface of the support top plate, and the second electromagnet and the second permanent magnet are located between the secondary force relieving and buffering assemblies.

[0014] Compared with the prior art, the application provides a protective buffering device for an elevator, which has the following beneficial effects:

[0015] 1、In the process of moving up and down, the rollers drive the wheel disc to rotate forward and reverse, thereby driving the rotor of the micro generator to rotate forward and reverse, so that the micro generator generates forward and reverse currents, and the first electromagnet changes the magnetic pole.

[0016] 2、In the process of moving up and down, the second electromagnet in the two protective buffering devices also changes the magnetic pole, so that the magnetic pole of the second electromagnet is the same as that of the second permanent magnet, and repulsive force is generated, thereby achieving the effect of buffering protection.

[0017] 3. In the event of an elevator falling to the bottom or overshooting, the silicone pad provides initial protection and cushioning; the extension and retraction of the fourth spring and the buffer further enhance initial cushioning; the sliding of the second through-hole movable post on the outer wall of the second guide rod, along with the extension and retraction of the fifth spring, provides initial force relief and cushioning; the sliding of the eight first through-hole movable posts on the outer walls of the eight first guide rods to the sides causes the thirty-two third springs to extend and retract, completing a secondary force relief and cushioning operation. Simultaneously, the ball bearings roll on the outer walls of the first guide rods to the sides, moving towards the interior of the open spherical groove. At this point, the sixth spring... The extension and retraction of the ball joint causes it to press against the first guide rod, reducing the ball's rotation speed and providing a secondary speed reduction buffer. The sliding of the inverted T-shaped inner rod within the inner and outer outer rods, along with the extension and retraction of the seventh spring, provides a secondary force relief buffer. Simultaneously, when the conical column extends into the through-groove and contacts the two inclined square columns, it pushes the two inclined square columns, the two T-shaped round rods, and the two brake pins to slide outwards within the two U-shaped anti-detachment grooves. When the two brake pins contact the inner walls on both sides of the outer outer rod, braking and speed reduction occur, thus providing a secondary speed reduction buffer and improving the protective effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a protective buffer device for elevators proposed in this invention.

[0019] Figure 2 for Figure 1 A magnified structural diagram of part A;

[0020] Figure 3 for Figure 1 A schematic diagram of the enlarged structure of part B;

[0021] Figure 4 A three-dimensional structural diagram of the protective buffer device;

[0022] Figure 5 A three-dimensional structural diagram of the protective buffer device from another perspective;

[0023] Figure 6 A three-dimensional structural diagram of the primary stress relief buffer assembly;

[0024] Figure 7 This is a three-dimensional structural diagram of the secondary stress relief buffer assembly;

[0025] Figure 8 for Figure 7 A schematic diagram of a partial sectional view of the structure from the front;

[0026] Figure 9 for Figure 8 A magnified structural diagram of part C;

[0027] Figure 10 It is the front view structure schematic diagram of the deceleration buffer assembly;

[0028] Figure 11 It is the D part enlarged structure schematic diagram of Figure 10

[0029] Figure 12 It is the combination stereogram structure schematic diagram of the first electromagnet and the circular arc slide column;

[0030] Figure 13 It is the principle module diagram of the magnetic force buffer.

[0031] In the figure: 1, the first permanent magnet; 2, safety clamp; 3, convex-shaped guide rail; 4, support bottom plate; 5, first spring; 6, car; 7, elevator shaft; 8, contact block; 9, micro generator; 10, wheel disc; 11, through-hole mounting seat; 12, first electromagnet; 13, circular arc slide; 14, second spring; 15, contact switch; 16, roller; 17, connecting plate; 18, connecting block; 19, support top plate; 20, fixed square column; 21, scissor-type support frame; 22, second electromagnet; 23, first guide rod; 24, outer sleeve rod; 25, first through-hole movable column; 26, third spring; 27, inverted T-shaped inner rod; 28, second through-hole movable column; 29, buffer; 30, fourth spring; 31, silica gel pad; 32, connecting rod; 33, second permanent magnet; 34, fifth spring; 35, second guide rod; 36, ball bearing; 37, circular arc supporting plate; 38, sixth spring; 39, open circular ball groove; 40, through circular groove; 41, circular cone column; 42, T-shaped circular rod; 43, inclined square column; 44, seventh spring; 45, middle-shaped anti-disengagement circular groove; 46, brake column; 47, circular arc slide column. DETAILED DESCRIPTION

[0032] The application will be further described in detail below with reference to the accompanying drawings.

[0033] Please refer to Figures 1-13 , the application provides a technical scheme: a protective buffer device for an elevator, comprising an elevator shaft 7, a car 6 and two protective buffer devices, longitudinal convex-shaped guide rails 3 are installed on the inner walls of the left and right sides of the elevator shaft 7, a plurality of first permanent magnets 1 are installed on the side close to the inner wall of the elevator shaft 7 at the front and rear ends of the two convex-shaped guide rails 3, and a contact block 8 is installed on the side close to the car 6 at the upper side of the two convex-shaped guide rails 3.

[0034] ​The left and right ends of the car 6 are installed with safety tongs 2 close to one side of the convex-shaped guide rail 3, and the car 6 is stopped and clamped on the convex-shaped guide rail 3 through the safety tongs 2, the upper and lower ends of the two safety tongs 2 are installed with three rollers 16 close to one side of the convex-shaped guide rail 3, and the three rollers 16 are distributed in a triangular structure outside the convex-shaped guide rail 3, and in the process of the car 6 moving up and down, the three rollers 16 roll on the outer wall of the convex-shaped guide rail 3, the upper and lower ends of the two safety tongs 2 are installed with through hole mounting seats 11, the inside of the four through hole mounting seats 11 is installed with micro generators 9, and the motor shaft of the micro generator 9 extends to the edge of the roller 16 close to the car 6, the outer wall of the motor shaft of the four micro generators 9 is sleeved with a wheel disc 10, and the edge of the wheel disc 10 is in contact with the edge of the roller 16 close to the car 6, and in the process of the car 6 moving up and down, the wheel disc 10 drives the rotor of the micro generator 9 to rotate forward and reverse, so that the micro generator 9 generates forward current and reverse current, and the first electromagnet 12 changes the magnetic pole, a plurality of grooves are formed in the front and rear ends of the two safety tongs 2, two circular arc sliding grooves 13 are symmetrically formed on the side walls of each groove, a first electromagnet 12 is movably arranged between the two circular arc sliding grooves 13, two circular arc sliding columns 47 are symmetrically fixed on the two sides of the first electromagnet 12, the circular arc sliding columns 47 on the two sides of the first electromagnet 12 are respectively and correspondingly slidably arranged in the two circular arc sliding grooves 13 on the two sides, and the upper and lower ends of each circular arc sliding column 47 are connected with the upper and lower inner walls of the circular arc sliding groove 13 through the second spring 14. When the car is not moving, the first electromagnet 12 is kept in a vertical state by the second spring 1 at the upper and lower ends of the circular arc sliding column 47. In the process of the car 6 moving up and down, according to the phenomenon of overweight and weightlessness, the circular arc sliding column 47 can slide up and down in the circular arc sliding groove 13, and the direction of the first electromagnet 12 is changed, so that the first electromagnet 12 is diagonally opposite to the first permanent magnet 1, and the speed of the car 6 sliding up and down is slowed down through the mutual repulsion of the first electromagnet 12 and the first permanent magnet 1, and a contact switch 15 is installed on the upper and lower ends of the two safety tongs 2 close to one side of the convex-shaped guide rail 3, as shown in Figure 13 , the magnetic pole of the first electromagnet 12 is changed through the contact of the contact switch 15 and the contact block 8 and the commutator, so that the magnetic pole of the first electromagnet 12 is changed again and is the same as that of the first permanent magnet 1, so that the car 6 can be protected and buffered;

[0035] Two protective buffering devices are installed on the upper and lower ends of the elevator shaft 7, and the two protective buffering devices are used to buffer and protect the car 6, and through the two protective buffering devices, the falling bottom phenomenon and the top collision phenomenon of the car 6 can be buffered and protected.

[0036] The protective buffering device comprises a first buffering mechanism, a second buffering mechanism and a magnetic buffering mechanism, the second buffering mechanism is internally provided with the magnetic buffering mechanism, the upper surface of the second buffering mechanism is provided with the first buffering mechanism, and the protective buffering device can achieve buffering protection.

[0037] The second buffering mechanism comprises a supporting bottom plate 4, the upper surface of the supporting bottom plate 4 is provided with four speed reduction buffering assemblies at four corners, the upper ends of the four speed reduction buffering assemblies are provided with a supporting top plate 19, and the second buffering mechanism is provided between the supporting bottom plate 4 and the supporting top plate 19.

[0038] The speed reduction buffering assembly comprises an outer sleeve rod 24, the outer sleeve rod 24 is welded to the upper surface of the supporting bottom plate 4, the bottom center of the outer sleeve rod 24 is provided with a conical column 41 extending upward, the inner side of the upper side of the outer sleeve rod 24 is slidably connected with a T-shaped inner rod 27, the upper end of the T-shaped inner rod 27 penetrates and extends out of the upper surface of the outer sleeve rod 24 and is welded to the lower surface of the supporting top plate 19, the middle part of the T-shaped inner rod 27 is provided with a longitudinal through circular groove 40, the lower side of the T-shaped inner rod 27 is provided with two symmetrical Chinese character-shaped anti-disengagement circular grooves 45, the two Chinese character-shaped anti-disengagement circular grooves 45 are in communication with the through circular groove 40, the side close to the through circular groove 40 of the two Chinese character-shaped anti-disengagement circular grooves 45 is slidably connected with a bevel square column 43, the bevel square column 43 extends into the inner part of the through circular groove 40, the middle part of the end away from the through circular groove 40 of the two bevel square columns 43 is welded with a T-shaped circular rod 42, the T-shaped circular rod 42 is located in the inner part of the Chinese character-shaped anti-disengagement circular groove 45, the outer wall of the two T-shaped circular rods 42 is sleeved with a seventh spring 44, the seventh spring 44 is located in the inner part of the Chinese character-shaped anti-disengagement circular groove 45, the other end of the two T-shaped circular rods 42 is provided with a brake column 46, the brake column 46 is located in the inner part of the Chinese character-shaped anti-disengagement circular groove 45, the outer wall of the outer sleeve rod 24 and the outer wall of the T-shaped inner rod 27 are sleeved with a first spring 5, the two ends of the first spring 5 are in contact with the supporting bottom plate 4 and the supporting top plate 19 respectively, the T-shaped inner rod 27 slides up and down in the inner part of the outer sleeve rod 24 and the seventh spring 44 is stretched and contracted, so that secondary buffering work is achieved, when the conical column 41 extends into the inner part of the through circular groove 40 and is in contact with the two bevel square columns 43, the two bevel square columns 43, the two T-shaped circular rods 42 and the two brake columns 46 are pushed to slide outward in the inner part of the two Chinese character-shaped anti-disengagement circular grooves 45, when the two brake columns 46 are in contact with the inner walls of the two sides of the outer sleeve rod 24, braking and speed reduction work is achieved, so that speed reduction buffering work is achieved.

[0039] The secondary force relief buffer assembly comprises eight first through-hole movable columns 25, four of which are welded to the upper surface of the support bottom plate 4, and the other four are welded to the lower surface of the support top plate 19. First guide rods 23 are welded between the eight first through-hole movable columns 25, and the number of the first guide rods 23 is eight. Two first through-hole movable columns 25 are slidably sleeved on the outer wall of each of the eight first guide rods 23. Four symmetrically arranged buffers 29 are arranged on the upper and lower sides of the eight first through-hole movable columns 25. A plurality of sixth springs 38 are arranged on the inner wall of the side of the thirty-two buffers 29 away from the first guide rods 23. The other end of each sixth spring 38 is provided with an arc supporting plate 37, which is located in the opening spherical groove 39. A ball 36 is rotatably connected to the inner side of the side of each buffer 29 close to the first guide rod 23. The ball 36 penetrates and extends out of the buffer 29 and rolls on the outer wall of the first guide rod 23. At the same time, the outer wall of the ball 36 is in contact with the inner wall of the arc supporting plate 37. A third spring 26 is sleeved on the outer wall of each of the two sides of the eight first guide rods 23, and the two ends of the third spring 26 are in contact with the first through-hole movable column 25 and the fixed square column 20, respectively. A shearing type support frame 21 is arranged between the eight first through-hole movable columns 25, and the number of the shearing type support frames 21 is four. The middle part of the first guide rod 23 is a circular rod, and the two sides of the first guide rod 23 are circular table rods. The diameter of the two sides of the first guide rod 23 is greater than that of the middle part of the first guide rod 23. When the eight first through-hole movable columns 25 slide on the outer wall of the eight first guide rods 23 towards the two sides, the thirty-two third springs 26 will perform the extension and retraction work, and the secondary force relief buffer work is completed. At the same time, the ball 36 rolls on the outer wall of the first guide rod 23 towards the two sides, and the ball 36 moves towards the inside of the opening spherical groove 39. At this time, the extension and retraction of the sixth spring 38 will cause the ball 36 to be tightly pressed against the first guide rod 23, thereby reducing the rotation speed of the ball 36 and achieving the speed reduction and buffering work.

[0040] The primary buffer mechanism comprises a buffer 29 installed in the middle part of the upper surface of the support top plate 19. The outer wall of the extension rod of the buffer 29 is sleeved with a fourth spring 30. The upper end of the buffer 29 is provided with a connecting plate 17, and the lower surface of the connecting plate 17 is in contact with the top of the fourth spring 30. The upper surface of the connecting plate 17 is provided with a silica gel pad 31. A primary force relief buffer assembly is arranged between the four end faces of the connecting plate 17 and the support top plate 19. The extension and retraction of the fourth spring 30 and the buffering of the buffer 29 complete the preliminary buffering work.

[0041] The first force relieving and buffering assembly comprises a second guide rod 35, two ends of the second guide rod 35 are welded with connecting blocks 18, the connecting blocks 18 are welded with the upper surface of the supporting top plate 19, the outer wall of the second guide rod 35 is slidably sleeved with a second through-hole movable column 28 on the side close to the buffer 29, the second through-hole movable column 28 is located between the two connecting blocks 18, the outer wall of the second guide rod 35 is sleeved with a fifth spring 34 away from the buffer 29, one end of the fifth spring 34 is in contact with the second through-hole movable column 28, and the other end is in contact with the connecting block 18 away from the buffer 29, and the connecting rod 32 is rotatably connected between the second through-hole movable column 28 and the connecting plate 17; the preliminary force relieving and buffering work is completed through the outward sliding of the second through-hole movable column 28 on the outer wall of the second guide rod 35 and the expansion and contraction of the fifth spring 34.

[0042] The magnetic force buffering mechanism comprises a second electromagnet 22 and a second permanent magnet 33, the second electromagnet 22 is installed on the upper surface of the middle part of the supporting bottom plate 4, the second permanent magnet 33 is installed on the lower surface of the middle part of the supporting top plate 19, the second electromagnet 22 and the second permanent magnet 33 are located between the second force relieving and buffering assembly, and the magnetic force buffering work is completed through the mutual repulsion of the second electromagnet 22 and the second permanent magnet 33.

[0043] The working principle and use process of the application are as follows: after the application is installed, and in the installation process, according to the height of the floor, the two contact blocks 8 are installed on the corresponding outer walls of the upper sides of the convex-shaped guide rails 3, the workers complete the electrical connection work of the plurality of first electromagnets 12, the micro generators 9, the contact switches 15 and the internal commutators of the elevator controller through the electric wires, when the elevator works and the car 6 moves up and down, the rollers 16 on the upper and lower sides of the two safety clamps 2 roll on the outer walls of the two convex-shaped guide rails 3, at this time, the rollers 16 drive the wheel discs 10 to rotate forward or reversely, thereby driving the rotors of the micro generators 9 to rotate forward and reversely, so that the micro generators 9 generate forward current or reverse current, and the first electromagnets 12 generate magnetic fields, at the same time, in the process that the elevator moves upward or downward, the elevator generates the phenomenon of excess weight or weightlessness, so that the circular arc sliding columns 47 can slide up and down in the circular arc sliding grooves 13 and change the orientations of the first electromagnets 12, so that the first electromagnets 12 are obliquely opposite to the first permanent magnets 1.

[0044] Specifically, when the elevator is in normal operation, the car 6 is lowered, the first electromagnet 12 is in weightlessness, the arc slide column 47 on both sides of the first electromagnet 12 can slide upward in the arc slide groove 13, the upper end of the first electromagnet 12 is away from the car 6, the lower end is close to the car 6, at this time, the outer side of the first electromagnet 12 faces the downward direction, which can better cooperate with the first permanent magnet 1; at the same time, the roller 16 can drive the wheel disc 10 to rotate forward when the car 6 is lowered, so that the micro generator 9 generates a forward current, the first electromagnet 12 can generate a magnetic field after the current is input, and the magnetic poles of the opposite sides of the first electromagnet 12 and the first permanent magnet 1 are the same, the first permanent magnet 1 has an upward thrust on the first electromagnet 12, which slows down the speed of the car 6,

[0045] When the car 6 is raised, the first electromagnet 12 is in overweight, the arc slide column 47 on both sides of the first electromagnet 12 can slide downward in the arc slide groove 13, the upper end of the first electromagnet 12 is close to the car 6, the lower end is away from the car 6, at this time, the outer side of the first electromagnet 12 faces the upward direction; at the same time, the roller 16 can drive the wheel disc 10 to rotate reversely when the car 6 is lowered, so that the micro generator 9 generates a reverse current, the magnetic poles of the opposite sides of the first electromagnet 12 and the first permanent magnet 1 are the same in reverse, the first permanent magnet 1 has an upward suction force on the first electromagnet 12, thereby reducing the energy consumption when the car 6 is raised;

[0046] When the elevator falls to the bottom, the car 6 will quickly descend, the roller 16 will drive the wheel disc 10 to quickly rotate forward, so that the current of the micro generator 9 increases, thereby increasing the magnetic field of the first electromagnet 12, and repelling the first permanent magnet 1, so that the repulsive force increases, slows down the speed of the car 6, and has the effect of buffering and protecting the car 6;

[0047] When the elevator hits the top, the car 6 will quickly rise, so that the micro generator 9 generates a reverse current and increases the voltage, so that the car 6 rises, when the contact switch 15 and the contact block 8 are in contact, the commutator changes the direction of the current of the micro generator 9, so that the magnetic pole of the first electromagnet 12 changes again, the magnetic poles of the opposite sides of the first electromagnet 12 and the first permanent magnet 1 are the same, the first permanent magnet 1 has a downward thrust on the first electromagnet 12, thereby slowing down the speed of the car 6, and having the effect of protection and buffering;

[0048] And when the car 6 moves up and down, the current generated by the micro generator 9 makes the second electromagnet 22 in the two protective buffer devices generate the same magnetic pole as the second permanent magnet 33, so that the second electromagnet 22 repels the second permanent magnet 33, which has a buffering and protective effect. When the car 6 contacts the silica gel pad 31, the silica gel pad 31 has a preliminary protective and buffering effect. At the same time, through the extension and contraction of the fourth spring 30 and the buffering of the buffer 29, the preliminary buffering work is completed. The second through-hole movable column 28 will also slide outward on the outer wall of the second guide rod 35, and the fifth spring 34 will also perform extension and contraction work to complete the preliminary force relief buffering work.

[0049] In addition, through the sliding of the inverted T-shaped inner rod 27 on the inner sleeve rod 24 and the extension and contraction of the seventh spring 44, the secondary force relief buffering work is achieved. At the same time, when the conical column 41 extends into the through circular groove 40 and contacts the two inclined square columns 43, the two inclined square columns 43, the two T-shaped circular rods 42, and the two brake columns 46 will slide outward in the two Chinese character-shaped anti-disengagement circular grooves 45. When the two brake columns 46 contact the inner walls of the two sides of the sleeve rod 24, the brake deceleration work is performed, thereby achieving secondary deceleration buffering work and improving the protective effect. At the same time, the eight first through-hole movable columns 25 will slide to the sides on the outer walls of the eight first guide rods 23, which will make the thirty-two third springs 26 perform extension and contraction work to complete the secondary force relief buffering work. The balls 36 will also roll to the sides on the outer walls of the first guide rods 23, which will make the balls 36 move to the inside of the open spherical groove 39. At this time, through the extension and contraction of the sixth spring 38, the balls 36 will be tightly pressed against the first guide rods 23, which will reduce the speed of the balls 36 and achieve secondary deceleration buffering work, thereby completing the buffering and protection of the car 6.

Claims

1. A protective buffer device for an elevator, comprising an elevator shaft (7), a car (6) and two protective buffer devices, characterized in that: The left and right inner walls of the elevator shaft (7) are provided with longitudinal N-shaped guide rails (3), the front and rear ends of the two N-shaped guide rails (3) are provided with a plurality of first permanent magnets (1) which are arranged at equal intervals in the longitudinal direction and are close to the inner wall of the elevator shaft (7), and the upper side of one end of the two N-shaped guide rails (3) is provided with a contact block (8) which is close to the car (6). The left and right ends of the car (6) are provided with safety clamps (2) which are close to the N-shaped guide rails (3), the upper and lower ends of the two safety clamps (2) are provided with three rollers (16) which are close to the N-shaped guide rails (3), and the three rollers (16) are arranged in a triangular shape on the outer wall of the N-shaped guide rails (3), the upper and lower ends of the two safety clamps (2) are provided with through hole mounting seats (11), the inside of the four through hole mounting seats (11) is provided with micro generators (9) which are arranged in a penetrating manner, the motor shaft of the micro generator (9) extends to the edge of the roller (16) which is close to the car (6), the outer wall of the motor shaft of the four micro generators (9) is sleeved with a wheel disc (10), and the edge of the wheel disc (10) is in contact with the edge of the roller (16) which is close to the car (6), a plurality of grooves are formed in the front and rear ends of the two safety clamps (2), two arc sliding grooves (13) are symmetrically formed on the side walls of each groove, a first electromagnet (12) is movably arranged between the two arc sliding grooves (13), two arc sliding columns (47) are symmetrically fixed on the two sides of the first electromagnet (12), the arc sliding columns (47) on the two sides of the first electromagnet (12) are correspondingly and slidably arranged in the arc sliding grooves (13) on the two sides, respectively, and the upper and lower ends of each arc sliding column (47) are connected with the upper and lower inner walls of the arc sliding groove (13) through a second spring (14), and a contact switch (15) is arranged on the side of the upper and lower ends of the two safety clamps (2) which is close to the N-shaped guide rails (3). The two protection and buffering devices are arranged on the upper and lower ends of the elevator shaft (7), and the two protection and buffering devices are used for buffering and protecting the car (6).

2. A protective buffer device for an elevator according to claim 1, characterized in that The protection and buffering device comprises a first buffering mechanism, a second buffering mechanism and a magnetic buffering mechanism, the second buffering mechanism is internally provided with the magnetic buffering mechanism, and the upper surface of the second buffering mechanism is provided with the first buffering mechanism.

3. A protective buffer device for an elevator according to claim 2, characterized in that The second buffering mechanism comprises a supporting bottom plate (4), speed reduction buffering assemblies are arranged at the upper surfaces of the four corners of the supporting bottom plate (4), a supporting top plate (19) is arranged at the upper ends of the four speed reduction buffering assemblies, and a second force unloading buffering assembly is arranged between the supporting bottom plate (4) and the supporting top plate (19).

4. A protective buffer device for an elevator according to claim 3, characterized in that: The speed reduction buffer assembly comprises an outer sleeve rod (24) welded on the upper surface of the support bottom plate (4), the bottom center of the outer sleeve rod (24) is provided with a conical column (41) extending upward, the inner side of the upper side of the outer sleeve rod (24) is slidably connected with a inverted T-shaped inner rod (27), the upper end of the inverted T-shaped inner rod (27) penetrates and extends out of the upper surface of the outer sleeve rod (24), and is welded with the lower surface of the support top plate (19), the middle part of the inverted T-shaped inner rod (27) is provided with a longitudinal through circular groove (40), the lower side of the inverted T-shaped inner rod (27) is provided with two symmetrical Chinese character-shaped anti-disengagement circular grooves (45), the two Chinese character-shaped anti-disengagement circular grooves (45) are communicated with the through circular groove (40), the side of the two Chinese character-shaped anti-disengagement circular grooves (45) close to the through circular groove (40) is slidably connected with a bevel square column (43), the bevel square column (43) extends into the inside of the through circular groove (40), the middle part of the end of the two bevel square columns (43) away from the through circular groove (40) is welded with a T-shaped circular rod (42), the T-shaped circular rod (42) is located in the inside of the Chinese character-shaped anti-disengagement circular groove (45), the outer wall of the two T-shaped circular rods (42) is sleeved with a seventh spring (44), the seventh spring (44) is located in the inside of the Chinese character-shaped anti-disengagement circular groove (45), the other end of the two T-shaped circular rods (42) is provided with a brake column (46), and the brake column (46) is located in the inside of the Chinese character-shaped anti-disengagement circular groove (45), the outer wall of the outer sleeve rod (24) and the outer wall of the inverted T-shaped inner rod (27) are sleeved with a first spring (5), and the two ends of the first spring (5) are respectively in contact with the support bottom plate (4) and the support top plate (19).

5. A protective bumper for an elevator as defined in claim 3, characterized by: The secondary force relief buffer assembly comprises eight first through-hole movable columns (25), four of which are welded on the upper surface of the support bottom plate (4), and the other four are welded on the lower surface of the support top plate (19), eight first guide rods (23) are welded between the eight first through-hole movable columns (25), the number of the first guide rods (23) is eight, two first through-hole movable columns (25) are slidably sleeved on the outer wall of each of the eight first guide rods (23), four symmetrically arranged buffers (29) are arranged on the upper and lower sides of the eight first through-hole movable columns (25), a plurality of sixth springs (38) are arranged on the inner wall of the side of the thirty-two buffers (29) away from the first guide rod (23), the other end of the sixth spring (38) is provided with an arc supporting plate (37), and the arc supporting plate (37) is located in the opening spherical groove (39), a ball (36) is rotatably connected to the inner side of the side of the thirty-two buffers (29) close to the first guide rod (23), the ball (36) penetrates and protrudes out of the buffer (29) and rolls on the outer wall of the first guide rod (23), and the outer wall of the ball (36) is in contact with the inner wall of the arc supporting plate (37), a third spring (26) is sleeved on the outer wall of the two sides of each of the eight first guide rods (23), and the two ends of the third spring (26) are in contact with the first through-hole movable column (25) and the fixed square column (20) respectively, and a shear type support frame (21) is arranged between the eight first through-hole movable columns (25), and the number of the shear type support frames (21) is four.

6. A protective bumper for an elevator as defined in claim 5, characterized by: The middle part of the first guide rod (23) is a circular rod, the two sides of the first guide rod (23) are circular truncated cone rods, and the diameter of the two sides of the first guide rod (23) is greater than that of the middle part of the first guide rod (23).

7. A protective bumper for an elevator as defined in claim 6, characterized by: The primary buffer mechanism comprises a buffer (29), the buffer (29) is installed on the upper surface of the middle part of the support top plate (19), a fourth spring (30) is sleeved on the outer wall of the telescopic rod of the buffer (29), a connecting plate (17) is arranged on the upper end of the buffer (29), the lower surface of the connecting plate (17) is in contact with the top of the fourth spring (30), a silica gel pad (31) is arranged on the upper surface of the middle part of the connecting plate (17), and a primary force relief buffer assembly is arranged between the four end surfaces of the connecting plate (17) and the support top plate (19).

8. A protective bumper for an elevator as defined in claim 7, characterized by: The primary force relief buffer assembly comprises a second guide rod (35), both ends of the second guide rod (35) are welded with connecting blocks (18), the connecting blocks (18) are welded with the upper surface of the support top plate (19), the outer wall of the second guide rod (35) is slidably sleeved with a second through-hole movable column (28) on the side close to the buffer (29), the second through-hole movable column (28) is located between the two connecting blocks (18), the outer wall of the second guide rod (35) is sleeved with a fifth spring (34) on the side away from the buffer (29), one end of the fifth spring (34) is in contact with the second through-hole movable column (28), the other end is in contact with the connecting block (18) away from the buffer (29), and the second through-hole movable column (28) and the connecting plate (17) are rotatably connected with a connecting rod (32).

9. A protective bumper for an elevator as defined in claim 8, characterized by: The magnetic force buffer mechanism comprises a second electromagnet (22) and a second permanent magnet (33), the second electromagnet (22) is installed in the middle of the upper surface of the support bottom plate (4), the second permanent magnet (33) is installed in the middle of the lower surface of the support top plate (19), and the second electromagnet (22) and the second permanent magnet (33) are located between the secondary force relief buffer assembly.

Images