Household elevator with safety braking function for household house

Abstract

The invention discloses a household elevator with a safety braking function for a household room, and belongs to the technical field of household elevator safety braking, and the household elevator with the safety braking function comprises an elevator body, a safety braking driving assembly and a buffering assembly. The safety brake driving assembly is arranged, when the elevator stalls, the angle between the pair of movable plates of the elevator shaft can be adjusted through the driving piece, a structure used for braking movement of the elevator is formed in the elevator car, and therefore the brake performance of the elevator is improved; meanwhile, the buffering assembly is arranged and installed in the bottom pit in a compressed mode, the problem that the installation of the buffering device is affected due to the fact that the space of the bottom pit of the household elevator is limited is solved, when the elevator stalls, the compressed buffering assembly can be rapidly recovered to the uncompressed state under the action of the limiting piece, and then the stalled elevator can be buffered; the elevator after stall falling can be effectively buffered, and the safety of personnel and the elevator is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of safety brakes for household elevators, and in particular relates to a household elevator with a safety brake function for household rooms. Background Art

[0002] With the continuous improvement of economic level and the continuous advancement of urbanization and urbanization, people have higher and higher requirements for living standards. At the same time, it is inconvenient for the elderly to go up and down the stairs, and there are safety hazards. Therefore, the demand for small home elevators in the market is becoming more and more urgent.

[0003] When a small home elevator is installed in a home, the height of the elevator pit is limited due to the limitations of the home conditions. It is usually set by digging a certain depth downward from the ground or extending steps upward when it is inconvenient to dig the ground. However, no matter whether the method of digging downward or extending upward is adopted, the space of the pit is limited, so that the installation space of the buffer component at the bottom is limited. When the elevator loses control and falls, the elevator car cannot be adequately buffered, which poses a safety hazard. Therefore, it is necessary to provide a home elevator with a safety braking function.

[0004] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0005] The object of the present invention is to provide a home elevator with a safety braking function for home use, which can solve the problem that the buffer component cannot effectively buffer the elevator car when the elevator falls due to pit limitations, resulting in safety hazards.

[0006] In order to achieve the above object, a technical solution provided by a specific embodiment of the present invention is as follows: A household elevator with a safety braking function for a household room, comprising: The elevator body includes an elevator shaft and an elevator car. The elevator car can move up and down in the elevator shaft through the drive structure. The elevator shaft includes a pair of fixed plates and a pair of movable plates. The pair of fixed plates are installed in a fixed manner. When the home elevator is installed, the pair of fixed plates are installed in a fixed manner at the designed position. The pair of movable plates are rotatably installed at the two end edges between the pair of fixed plates, so that the pair of movable plates can rotate between the pair of fixed plates to adjust the distance between the pair of movable plates. The falling elevator car is braked by adjusting the distance between the pair of movable plates.

[0007] A safety brake drive assembly includes a bidirectional screw, which is installed in a rotating manner at a position near the top of the elevator shaft. A pair of driving members are threadedly connected to the positive and negative threads of the bidirectional screw, and the pair of driving members can be moved away from or closer to each other by rotating the bidirectional screw. The pair of driving members are used to drive a pair of movable plates to rotate between a pair of fixed plates. When the pair of driving members move, the pair of movable plates can be driven to rotate between the pair of fixed plates. When the pair of driving members move away from each other, the upper ends of the pair of movable plates will gradually separate, and the lower ends of the pair of movable plates will gradually approach each other, thereby narrowing the distance between the pair of movable plates near the lower ends, so that the stalled and falling elevator car can be braked by the movable plates.

[0008] A buffer assembly includes a first buffer, a second buffer, a buffer block and a limit assembly, wherein the first buffer is installed at the bottom of the elevator shaft, the second buffer assembly is arranged above the first buffer assembly, and the buffer block is arranged above the second buffer assembly, and the first buffer, the second buffer and the buffer block are all used to buffer the elevator car, and the buffer block is arranged at the uppermost end and is arranged as a flexible buffer, so that the elevator car first contacts the buffer block after falling, so as to make the elevator car and the buffer contact flexibly. A plurality of the first buffer and the second buffer are arranged, and the plurality of the first buffer and the second buffer improve the buffering effect on the elevator car, and ensure the safety of personnel and the elevator car after the elevator car falls and is buffered. Multiple of the first buffer members and the second buffer members are all in a compressed state. Since the space for installing the elevator pit is limited, in order to enable the buffer device installed in the pit to effectively buffer the elevator car after falling under full load and ensure the safety of personnel and the elevator car, the first buffer member and the second buffer member are installed in a compressed state. When the elevator stalls, the first buffer member and the second buffer member can be released to a natural state to buffer the falling elevator car, which can effectively solve the problem of inconvenient installation of the buffer device due to insufficient pit space.

[0009] In one or more embodiments of the present invention, bearings are installed on both side edges of the opposite side walls of a pair of fixed plates, and a rotating shaft is fixedly connected to the side wall edges of the movable plate. The rotating shaft is installed in the bearing, and the rotating shaft rotates in the bearing, so that a pair of movable plates can rotate between a pair of fixed plates.

[0010] In one or more embodiments of the present invention, the driving assembly includes a first threaded connecting rod and a second threaded connecting rod, the first threaded connecting rod and the second threaded connecting rod are respectively threadedly connected to the square thread of the bidirectional lead screw, the bottoms of the first threaded connecting rod and the second threaded connecting rod are fixedly connected to a mounting plate, the side wall of the mounting plate is fixedly connected to a driving rod, the end of the driving rod away from the mounting plate is fixedly connected to a driving plate, and the side of the driving plate away from the driving rod abuts against the inner side wall of the movable plate. The first threaded connecting rod and the second threaded connecting rod are moved in a direction away from or close to each other by the rotation of the bidirectional lead screw, and the first threaded connecting rod and the second threaded connecting rod will drive their respective mounting plates to move, and the movement of the mounting plate will drive the driving rod to move, and the movement of the driving rod will drive the driving plate to move, so that the movable plate can be pushed to rotate by the movement of the driving plate. At the same time, the driving plate makes the force between the driving rod and the movable plate uniform when pushing, so as to facilitate the stability when pushing the movable plate to rotate. It should be noted that the rotation of the pair of movable plates is to shorten the distance between the lower ends of the pair of movable plates, so that the inner side walls of the pair of movable plates can contact the bottom of the elevator car, so that the falling of the elevator car can be braked by clamping the pair of movable plates. At the same time, when the movable plates are adjusted by rotating, a space that gradually narrows from top to bottom will be formed between the pair of movable plates. Therefore, when the elevator car gradually moves downward between the pair of movable plates, the friction between the elevator car and the movable plates will gradually increase, so that there is a buffer space for braking the elevator car, avoiding hard braking and causing secondary injuries to the personnel in the elevator car. In addition, the adjustment of the distance between the movable plates when rotating should be carried out in combination with the size of the elevator car, so the range of movement of the first threaded connecting rod and the second threaded connecting rod on the bidirectional screw matches the range of adjustment of the movable plate distance.

[0011] In one or more embodiments of the present invention, the first threaded connecting rod and the second threaded connecting rod are respectively at equal distances from the movable plate on the adjacent side, a driven gear is fixedly connected at the center of the bidirectional lead screw, and the first threaded connecting rod and the second threaded connecting rod are symmetrically arranged on both sides of the driven gear, so that the first threaded connecting rod and the second threaded connecting rod drive the driving rod to move by the same distance when they move, so that the angles of rotation of a pair of movable plates are the same, so as to improve the braking effect of the movable plate on the elevator car after falling. The driven gear is meshedly connected with a driving gear, a driving shaft is fixedly connected to the side wall of the driving gear, a driving motor is installed at one end of the driving shaft away from the driving gear, the rotation of the driving motor drives the driving shaft to rotate, the driving shaft rotates and the driving gear rotates, the driving gear rotates and the driven gear rotates, the rotation of the driven gear drives the bidirectional lead screw to rotate, thereby driving the first threaded connecting rod and the second threaded connecting rod to move, and then adjusting the angle of the pair of movable plates. The elevator is also provided with a speed detection device, and the drive motor is controlled by the elevator control device. When the speed detection device detects that the moving speed of the elevator car exceeds the set value, the elevator control device will start the drive motor, so that the drive member drives the adjustment of the angle of a pair of movable plates.

[0012] In one or more embodiments of the present invention, both ends of the bidirectional lead screw are fixedly connected to limit blocks, and the limit blocks are used to limit the range of movement of the first threaded connecting rod and the second threaded connecting rod. A fixed bearing is installed on the outer wall of the limit block, and a support rod is fixedly installed on the outer wall of the fixed bearing. The end of the support rod away from the limit block is fixedly connected to the inner wall of the fixed plate. Since the support rod is fixedly connected, the position of the support rod is fixed, and the limit block can be supported by the support rod to ensure that the position of the bidirectional lead screw is fixed. At the same time, a bearing is arranged between the support rod and the limit block, so that the position of the bidirectional lead screw is fixed and can rotate normally.

[0013] In one or more embodiments of the present invention, a pair of guide blocks are arranged near the bottom between the pair of movable plates in a front-to-back manner, a groove body is provided in the pair of guide blocks, and the guide blocks are slidably connected to a pair of sliding rods at both ends through the groove body, and a compression spring is installed between the ends of the pair of sliding rods placed in the guide blocks, and the ends of the sliding rods placed outside the guide blocks abut against the inner side wall of the movable plate. When the movable plate is adjusted in position under the condition of elevator stall, the lower ends of the pair of movable plates are narrowed, so that the pair of sliding rods can be pushed back into the guide blocks, and the compression springs will be compressed at the same time when they are retracted. When the elevator stall abnormality is relieved, the drive motor rotates in the opposite direction so that the first threaded connecting rod and the second threaded connecting rod move in a manner close to each other, so that the drive rod drives the drive plate to retract, so that the drive plate no longer has an outward pushing force on the upper end of the movable plate, so that the compression spring can push the sliding rod to move outward, so that the sliding rod pushes the lower end of the movable plate to move outward, so that the movable plate is restored to a vertical position.

[0014] In one or more embodiments of the present invention, a plurality of blocking blocks are fixedly connected to the inner side wall of the movable plate, and the plurality of blocking blocks are evenly arranged on the inner side wall in a front-to-back and up-and-down manner. The blocking blocks are made of rubber material, and protective layers are arranged at the left and right edges of the bottom of the elevator car. When the angle of the movable plate changes, the movable plate will drive the blocking blocks to rotate. In order to prevent the movable plate from directly contacting the elevator car when braking the fall of the elevator car, a plurality of blocking blocks are arranged on the side wall of the movable plate, and a limiting block is arranged at the bottom of the elevator car, so that the contact between the limiting block and the driving plate can achieve the braking of the elevator car. At the same time, when the elevator car falls under full load, there is a large impact force, so that when the protective layer contacts the blocking block, the blocking block will be squeezed or torn, so as to achieve the braking of the elevator car. Since the damage of the blocking block is easy to restore, the damage to the elevator car can be avoided while braking the elevator car.

[0015] In one or more embodiments of the present invention, the first buffer member includes a base, the base is installed at the bottom of the elevator shaft, a sleeve is fixedly connected to the base, a telescopic rod is telescopically installed in the sleeve, a first buffer spring is sleeved on the side wall of the telescopic rod, and a support block is fixedly connected to the telescopic rod. By retracting the telescopic rod in the base, the first buffer spring can be compressed, so that the compression of the first buffer spring can achieve buffering of the impact of the elevator car falling.

[0016] In one or more embodiments of the present invention, a first mounting plate is installed between the first buffer member and the second buffer member, and the first mounting plate makes it easy to compress the first buffer member while stabilizing the second buffer member after installation. A second mounting plate is installed between the second buffer member and the buffer block, and the second mounting plate is used to support the buffer block while facilitating the compression of the second buffer member. The support block is fixedly connected to the bottom of the buffer block, and the second buffer member includes a second buffer spring and a telescopic protective sleeve, and the telescopic protective sleeve is sleeved on the outside of the second buffer spring, and the telescopic protective sleeve makes the second buffer spring stable when it is telescoped. The lower end of the second buffer spring is installed on the first mounting plate, and the upper end of the second buffer spring is installed on the bottom of the second mounting plate, so that the second buffer spring is stable after installation.

[0017] In one or more embodiments of the present invention, there are multiple limit assemblies, and the multiple limit assemblies are respectively arranged at the edge positions of the four corners of the second mounting plate, and the limit assemblies include a slide groove, and the slide groove is opened at the edge position of the bottom of the second mounting plate, and the slide groove is provided with a slide-out groove on the side away from the edge of the second mounting plate, and a slider is slidably connected in the slide groove, and the end of the slider placed on the lower side of the slide groove is fixedly connected to a connecting rod, and the end of the connecting rod away from the slider is fixedly connected to the sliding rod. In order to be able to install the first buffer and the second buffer in the pit, the first buffer and the second buffer need to be in a compressed state after installation, so that the space occupied by the first buffer and the second buffer after installation is small. When the elevator stalls, it is necessary to quickly restore the first buffer and the second buffer to a non-stressed state in order to buffer the fall of the elevator car, so it is necessary to release the compression force on the first buffer and the second buffer. By setting a limit assembly, when the elevator falls abnormally, the angle of the movable plate will change. When the lower ends of a pair of movable plates are narrowed, the sliding rod is pushed back. When the sliding rod retracts, the connecting rod is driven to move. When the connecting rod moves, the slider is driven to move, so that the slider slides from the slide groove to the slide-out groove. Under the upward elastic force of the first buffer and the second buffer, the slider can be disengaged from the slide-out groove, so that the second mounting plate and the slider are separated, and the first buffer and the second buffer can be quickly restored to a non-stressed state. At the same time, when the warning is released, it is only necessary to compress the second mounting plate during installation, and the slider is sleeved in the slide-out groove. When the sliding rod moves outward, the slider can be driven by the connecting rod to slide and connect in the slide groove. The restriction between the slide groove and the slider ensures that the first buffer and the second buffer are in a compressed state. In addition, when installing an elevator, the limitation of the pit space makes the installation of the buffer device always a difficult problem to solve. In the present application, not only the buffer assembly can be installed in the limited pit, but also two groups of buffer assemblies, namely the first buffer member and the second buffer member, are installed, so that the first buffer member and the second buffer member can jointly buffer the fall of the elevator, thereby ensuring the safety of people and the elevator after the elevator falls through effective buffering.

[0018] Compared with the prior art, the present invention is provided with a safety brake drive assembly. When the elevator stalls, the angle between a pair of movable plates in the elevator shaft can be adjusted by the drive member, so that a structure for braking the movement of the elevator is formed in the elevator car, thereby improving the braking performance of the elevator; at the same time, a buffer assembly is provided, and the buffer assembly is installed in the pit in a compressed manner, thereby overcoming the problem of the limited space in the pit of a home elevator affecting the installation of the buffer device. When the elevator stalls, the action of the limit member will cause the compressed buffer assembly to quickly return to an uncompressed state, so that the stalled elevator can be buffered, so that the elevator can be effectively buffered after the stall and fall, thereby ensuring the safety of personnel and the elevator. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of a household elevator with a safety braking function for a household room in one embodiment of the present invention; Figure 2 The interior of an elevator shaft of a home elevator with a safety brake function for a home in one embodiment of the present invention is schematically shown. Figure 1 ; Figure 3 The interior of an elevator shaft of a home elevator with a safety brake function for a home in one embodiment of the present invention is schematically shown. Figure 2 ; Figure 4 In one embodiment of the present invention Figure 3 The enlarged view of point A in the middle; Figure 5 The interior of an elevator shaft of a home elevator with a safety brake function for a home in one embodiment of the present invention is schematically shown. Figure 3 ; Figure 6 In one embodiment of the present invention Figure 5 The enlarged view of point B in the middle; Figure 7 It is a cross-sectional view of a household elevator with a safety braking function for a household room in one embodiment of the present invention; Figure 8 is a cross-sectional view of a buffer assembly according to an embodiment of the present invention; Fig. 9 is a cross-sectional view of a guide rod in one embodiment of the present invention; Fig.10 The figure is a schematic diagram of the connection between the fixed plate and the movable plate of the elevator shaft in one embodiment of the present invention.

[0021] Description of main reference numerals: 1- elevator body, 11- elevator shaft, 1101- fixed plate, 1102- movable plate, 12- elevator car, 13- bearing, 14- rotating shaft, 2- safety brake drive assembly, 21- bidirectional screw, 22- first threaded connecting rod, 23- second threaded connecting rod, 24- mounting plate, 25- driving rod, 26- driving plate, 27- limiting block, 28- driven gear, 29- driving gear, 210- driving shaft, 211- driving motor, 212- supporting rod, 213- guide block, 214- sliding rod, 215 -compression spring, 216-blocking block, 217-protective layer, 3-buffer assembly, 31-first buffer member, 3101-base, 3102-sleeve, 3103-telescopic rod, 3104-first buffer spring, 3105-support block, 32-second buffer member, 3201-second buffer spring, 3202-telescopic protective sleeve, 33-buffer block, 34-first mounting plate, 35-second mounting plate, 36-limiting assembly, 3601-slide groove, 3602-slider, 3603-slide-out groove, 3604-connecting rod. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings 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 should fall within the scope of protection of the present invention.

[0023] like Figure 1~Figure 3 As shown, a household elevator with a safety braking function for a household room in one embodiment of the present invention comprises an elevator body 1, a safety braking drive component 2 and a buffer component 3.

[0024] like Figure 1~Figure 3 As shown, the elevator body 1 includes an elevator shaft 11 and an elevator car 12. The elevator car 12 can move up and down in the elevator shaft 11 driven by a driving structure. The elevator shaft 11 includes a pair of fixed plates 1101 and a pair of movable plates 1102. The pair of fixed plates 1101 are installed in a fixed manner. When the home elevator is installed, the pair of fixed plates 1101 are installed in a fixed manner at the designed position. A pair of movable plates 1102 are rotatably installed at the two end edges between the pair of fixed plates 1101, so that the pair of movable plates 1102 can rotate between the pair of fixed plates 1101, so as to adjust the spacing between the pair of movable plates 1102, that is, to adjust the angle between the pair of movable plates 1102, and brake the falling elevator car 12 by adjusting the spacing between the pair of movable plates 1102.

[0025] like Fig.10 As shown, bearings 13 are installed at the edges of both sides of the opposite side walls of a pair of fixed plates 1101, and a rotating shaft 14 is fixedly connected to the edge of the side wall of the movable plate 1102. The rotating shaft 14 is installed in the bearing 13. Through the rotation of the rotating shaft 14 in the bearing 13, the pair of movable plates 1102 can rotate between the pair of fixed plates 1101.

[0026] like Figure 1 , Figure 2 and Figure 4 As shown, the safety brake drive assembly 2 includes a bidirectional lead screw 21, which is installed in a rotating manner at a position near the top of the elevator shaft 11, and a pair of driving members are threadedly connected on the positive and negative threads of the bidirectional lead screw 21. The rotation of the bidirectional lead screw 21 can make the pair of driving members move in a way of moving away from or approaching each other. The pair of driving members is used to drive a pair of movable plates 1102 to rotate between a pair of fixed plates 1101. When the pair of driving members moves, the pair of movable plates 1102 can be driven to rotate between the pair of fixed plates 1101. And when the pair of driving members move in a way of moving away from each other, the upper ends of the pair of movable plates 1102 will gradually separate, and under the action of the rotating shaft 14, the lower ends of the pair of movable plates 1102 will gradually approach each other, so that the distance between the pair of movable plates 1102 and the lower ends becomes narrower, so that the elevator car 12 that is stalled and falling is braked by the movable plate 1102.

[0027] like Figure 1 , Figure 2 and Figure 4 As shown, the driving assembly includes a first threaded connecting rod 22 and a second threaded connecting rod 23, which are respectively threadedly connected to the square threads of the bidirectional lead screw 21, and the bottoms of the first threaded connecting rod 22 and the second threaded connecting rod 23 are fixedly connected to a mounting plate 24, and a driving rod 25 is fixedly connected to the side wall of the mounting plate 24, and an end of the driving rod 25 away from the mounting plate 24 is fixedly connected to a driving plate 26, and the side of the driving plate 26 away from the driving rod 25 abuts against the inner side wall of the movable plate 1102. The first threaded connecting rod 22 and the second threaded connecting rod 23 move in a direction away from or close to each other through the rotation of the bidirectional lead screw 21, and the first threaded connecting rod 22 and the second threaded connecting rod 23 will drive their respective mounting plates 24 to move, and the movement of the mounting plate 24 drives the driving rod 25 to move, and the movement of the driving rod 25 drives the driving plate 26 to move, so that the movable plate 1102 can be driven to rotate by the movement of the driving plate 26. At the same time, the driving plate 26 makes the force between the driving rod 25 and the movable plate 1102 uniform when pushing, so as to facilitate the stability when pushing the movable plate 1102 to rotate.

[0028] It should be noted that, since the pair of movable plates 1102 rotate in order to achieve the narrowing of the distance between the lower ends of the pair of movable plates 1102, the inner side walls of the pair of movable plates 1102 can act on the bottom of the elevator car 12, so that the falling of the elevator car 12 can be braked by the clamping of the pair of movable plates 1102. At the same time, when the movable plates 1102 are adjusted by rotating, a space that gradually narrows from top to bottom will be formed between the pair of movable plates 1102, so that when the elevator car 12 gradually moves downward between the pair of movable plates 1102, the friction between the elevator car 12 and the movable plates 1102 will gradually increase, so that the braking of the elevator car 12 has a buffer space, avoiding secondary injuries to the personnel in the elevator car 12 caused by hard braking. In addition, the adjustment of the distance between the movable plates 1102 when they rotate should be carried out in combination with the size of the elevator car 12. Therefore, the range of movement of the first threaded connecting rod 22 and the second threaded connecting rod 23 on the bidirectional screw 21 matches the adjustment range of the distance between the movable plates 1102, ensuring that after the angle of the movable plate 1102 is adjusted, the elevator car 12 can slowly fall while interacting with the movable plate 1102.

[0029] like Figure 4 and Figure 7 As shown, the first threaded connecting rod 22 and the second threaded connecting rod 23 are respectively at equal distances from the movable plate 1102 on the adjacent side, and a driven gear 28 is fixedly connected to the center position of the bidirectional lead screw 21. The first threaded connecting rod 22 and the second threaded connecting rod 23 are symmetrically arranged on both sides of the driven gear 28, so that when the first threaded connecting rod 22 and the second threaded connecting rod 23 move, the driving rod 25 moves the same distance, so that the pair of movable plates 1102 rotate at the same angle, so as to improve the braking effect of the movable plate 1102 on the elevator car 12 after falling. The driven gear 28 is meshedly connected with the driving gear 29, and the driving shaft 210 is fixedly connected to the side wall of the driving gear 29. The driving motor 211 is installed at the end of the driving shaft 210 away from the driving gear 29. The rotation of the driving motor 211 drives the driving shaft 210 to rotate, and the driving shaft 210 drives the driving gear 29 to rotate when the driving shaft 210 rotates. When the driving gear 29 rotates, it drives the driven gear 28 to rotate. The rotation of the driven gear 28 drives the two-way screw 21 to rotate, thereby driving the first threaded connecting rod 22 and the second threaded connecting rod 23 to move, and then adjusting the angle of the pair of movable plates 1102. In addition, the elevator is provided with a speed detection device, and the driving motor 211 is controlled by the elevator control device. When the speed detection device detects that the moving speed of the elevator car 12 exceeds the set value, the elevator control device will start the driving motor 211, so that the driving member drives the angle of the pair of movable plates 1102 to be adjusted.

[0030] like Figure 1 and Figure 4As shown, both ends of the bidirectional lead screw 21 are fixedly connected to the limit blocks 27, and the limit blocks 27 are used to limit the range of movement of the first threaded connecting rod 22 and the second threaded connecting rod 23. A fixed bearing is installed on the outer wall of the limit block 27, and a support rod 212 is fixedly installed on the outer wall of the fixed bearing. The end of the support rod 212 away from the limit block 27 is fixedly connected to the inner wall of the fixed plate 1101. Since the support rod 212 is fixedly connected, the position of the support rod 212 is fixed, and the limit block 27 can be supported by the support rod 212 to ensure that the position of the bidirectional lead screw 21 is fixed. At the same time, a bearing is arranged between the support rod 212 and the limit block 27, so that the position of the bidirectional lead screw 21 is fixed and can rotate normally.

[0031] like Figure 5 and Fig. 9 As shown, a pair of guide blocks 213 are arranged in a front-to-back manner near the bottom between the pair of movable plates 1102, a slot body is provided in the pair of guide blocks 213, and the guide blocks 213 are slidably connected to a pair of sliding rods 214 at both ends through the slot body, and a compression spring 215 is installed between one end of the pair of sliding rods 214 placed in the guide blocks 213, and one end of the sliding rod 214 placed outside the guide blocks 213 abuts against the inner side wall of the movable plate 1102. When the movable plate 1102 is adjusted in position in the case of elevator stall, the lower ends of the pair of movable plates 1102 are narrowed, so that the pair of sliding rods 214 can be pushed back into the guide blocks 213, and the compression spring 215 will be compressed at the same time when retracting. When the elevator stall anomaly is resolved, the drive motor 211 rotates in the opposite direction so that the first threaded connecting rod 22 and the second threaded connecting rod 23 move closer to each other, so that the drive rod 25 drives the drive plate 26 to retract, so that the drive plate 26 no longer has an outward pushing force on the upper end of the movable plate 1102. Therefore, the compression spring 215 can push the sliding rod 214 to move outward, so that the sliding rod 214 pushes the lower end of the movable plate 1102 to move outward, so that the movable plate 1102 can be restored to a vertical position.

[0032] like Figure 2 , Figure 3 and Figure 5As shown, a plurality of blocking blocks 216 are fixedly connected to the inner side wall of the movable plate 1102, and the plurality of blocking blocks 216 are evenly arranged on the inner side wall of 1201 in a front-to-back and up-and-down manner. The blocking blocks 216 are made of rubber material, and a protective layer 217 is arranged at the left and right edges of the bottom of the elevator car 12. When the angle of the movable plate 1102 changes, the movable plate 1102 will drive the blocking blocks 216 to rotate. In order to prevent the movable plate 1102 from directly contacting the elevator car 12 when braking the fall of the elevator car 12, a plurality of blocking blocks 216 are arranged on the side wall of the movable plate 1102, and a limit block 27 is arranged at the bottom of the elevator car 12, so that the contact between the limit block 27 and the driving plate 26 realizes the braking of the elevator car 12 by 1201. At the same time, when the elevator car 12 falls at full load, there is a large impact force, so that when the protective layer 217 and the blocking block 216 come into contact, the blocking block 216 will be squeezed or torn, so as to achieve braking of the elevator car 12. Since the damage to the blocking block 216 is easy to restore, the elevator car 12 can be braked and the elevator can be restored at the same time.

[0033] like Figure 3 and Figure 7 As shown, the buffer assembly 3 includes a first buffer 31, a second buffer 32, a buffer block 33 and a limit assembly 36. The first buffer 31 is installed at the bottom of the elevator shaft 11, the second buffer assembly 32 is arranged above the first buffer assembly 31, and the buffer block 33 is arranged above the second buffer assembly 32. The first buffer 31, the second buffer 32 and the buffer block 33 are all used to buffer the elevator car 12. At the same time, the buffer block 33 is arranged at the uppermost end and is arranged as a flexible buffer, so that the elevator car 12 first contacts the buffer block 33 after falling, so as to make the elevator car 12 and the buffer contact flexibly. A plurality of first buffers 31 and second buffers 32 are provided, and a plurality of first buffers 31 and second buffers 32 improve the buffering effect on the elevator car 12, ensuring the safety of personnel and the elevator car 12 after the elevator car 12 falls and is buffered. Multiple first buffers 31 and second buffers 32 are all in a compressed state. Since the space for installing the elevator pit is limited, in order to enable the buffer device installed in the pit to effectively buffer the elevator car 12 after the full load falls, and ensure the safety of personnel and the elevator car 12, the first buffer 31 and the second buffer 32 are installed in a compressed state. When the elevator stalls, the first buffer 31 and the second buffer 32 can be released to a natural state to buffer the fallen elevator car 12, which can well solve the problem that the buffer device is not easy to install due to insufficient pit space. The position of the first buffer 31 and the second buffer 32 in a compressed state can be limited by the limit assembly 36, so that the first buffer 31 and the second buffer 32 will not release themselves when they are in a compressed state.

[0034] like Figure 8 As shown, the first buffer member 31 includes a base 3101, which is installed at the bottom of the elevator shaft 11, and a sleeve 3102 is fixedly connected to the base 3101. A telescopic rod 3103 is telescopically installed in the sleeve 3102, and a first buffer spring 3104 is sleeved on the side wall of the telescopic rod 3103. A support block 3105 is fixedly connected to the telescopic rod 3103. By retracting the telescopic rod 3103 in the base 3101, the first buffer spring 3104 can be compressed, so that the compression of the first buffer spring 3104 can achieve buffering of the impact of the elevator car 12 after falling.

[0035] like Figure 7 and Figure 8 As shown, a first mounting plate 34 is installed between the first buffer member 31 and the second buffer member 32, and the first mounting plate 34 makes the second buffer member 32 stable after installation and facilitates the compression of the first buffer member 31. A second mounting plate 35 is installed between the second buffer member 32 and the buffer block 33, and the second mounting plate 35 is used to support the buffer block 33 and facilitate the compression of the second buffer member 32. The support block 3105 is fixedly connected to the bottom of the buffer block 33, and the second buffer member 32 includes a second buffer spring 3201 and a telescopic protective sleeve 3202, and the telescopic protective sleeve 3202 is sleeved on the outside of the second buffer spring 3201, and the telescopic protective sleeve 3202 makes the second buffer spring 3201 stable when it is telescoped. The lower end of the second buffer spring 3201 is installed on the first mounting plate 34, and the upper end of the second buffer spring 3201 is installed on the bottom of the second mounting plate 35, so that the second buffer spring 3201 is stable after installation.

[0036] like Figure 5 Combination Figure 6As shown, there are multiple limit assemblies 36, and the multiple limit assemblies 36 are respectively arranged at the edge positions of the four corners of the second mounting plate 35, so that the four corners of the second mounting plate can be limited by the limit assemblies, so that the first buffer 31 and the second buffer 32 are stable when they are limited by the second mounting plate 35 when they are compressed. The limit assembly 36 includes a slide groove 3601, the slide groove 3601 is opened at the edge position of the bottom of the second mounting plate 35, and a slide-out groove 3603 is opened on the side of the slide groove 3601 away from the edge of the second mounting plate 35. A slider 3602 is slidably connected in the slide groove 3601, and one end of the slider 3602 placed on the lower side of the slide groove 3601 is fixedly connected to a connecting rod 3604, and one end of the connecting rod 3604 away from the slider 3602 is fixedly connected to the sliding rod 214. In order to install the first buffer 31 and the second buffer 32 in the pit, the first buffer 31 and the second buffer 32 need to be in a compressed state after installation, so that the first buffer 31 and the second buffer 32 occupy less space after installation. When the elevator stalls, the first buffer 31 and the second buffer 32 need to be quickly restored to a non-stressed state to buffer the fall of the elevator car 12, so the compression force on the first buffer 31 and the second buffer 32 needs to be released. By setting the limit assembly 36, when the elevator falls abnormally, the angle of the movable plate 1102 will change. When the lower ends of a pair of movable plates 1102 are narrowed, the sliding rod 214 is pushed to retract. When the sliding rod 214 retracts, it will drive the connecting rod 3604 to move. When the connecting rod 3604 moves, it drives the slider 3602 to move, so that the slider 3602 slides from the slide groove 3601 to the slide-out groove 3603. Under the upward elastic force of the first buffer 31 and the second buffer 32, the slider 3602 can be disengaged from the slide-out groove 3603, so that the second mounting plate 35 and the slider 3602 can be disengaged, so that the first buffer 31 and the second buffer 32 can be quickly restored to a non-stressed state. At the same time, when the warning is lifted, it is only necessary to compress the second mounting plate 35 during installation, and insert the slider 3602 into the slide-out groove 3603. When the sliding rod 214 moves outward, the slider 3602 can be driven by the connecting rod 3604 to slide and connect in the slide groove 3601. The restriction between the slide groove 3601 and the slider 3602 ensures that the first buffer 31 and the second buffer 32 are in a compressed state.

[0037] In addition, when installing an additional elevator, the limitation of the pit space makes the installation of the buffer device always a difficult problem to solve. In the present application, not only the buffer assembly can be installed in the limited pit, but also two groups of buffer assemblies, the first buffer member 31 and the second buffer member 32, are installed. Thus, the first buffer member 31 and the second buffer member 32 jointly buffer the fall of the elevator, thereby improving the buffering effect of the elevator after the fall, and ensuring the safety of the personnel and the elevator after the elevator falls.

[0038] When in use, when the elevator is running and the speed detection device detects that the elevator running speed exceeds the warning value, the elevator control system will start the drive motor 211, and the drive motor 211 drives the bidirectional screw 21 to rotate, so that the first threaded connecting rod 22 and the second threaded connecting rod 23 move in the direction away from each other, and the first threaded connecting rod 22 and the second threaded connecting rod 23 will drive the respectively connected drive rod 25 to move, and push the pair of 1201 to rotate between the pair of 1202 through the drive plate 26, so that the angle between the pair of 1201 changes, so that the distance between the lower ends of the pair of 1201 is narrowed, and the lower end side wall of 1201 will push the sliding rod 214 to retract, and when the sliding rod 214 retracts, it drives the connecting rod 3604 to move, and the connecting rod 3604 drives the slider 3602 to slide from the slide groove 3601 to the slide out groove 3603. , under the upward elastic force of the first buffer member 31 and the second buffer member 32, the second mounting plate 35 and the slider 3602 are separated, so that the first buffer member 31 and the second buffer member 32 can be restored to an uncompressed state; at the same time, when the elevator stalls and causes the elevator car 12 to fall abnormally, the lower end of the elevator car 12 will contact the blocking block 216 set on the inner wall 1201 which is narrowed at the lower end, thereby blocking the falling of the elevator car 12 by the blocking block 216, so that the blocking block 216 can be driven by 1201 to brake the falling of the elevator car 12, and at the same time, when the elevator car 12 falls and contacts the buffer block 33, the buffer block 33, the second buffer member 32 and the first buffer member 31 can buffer the elevator car 12 respectively, thereby ensuring that the elevator car 12 can be effectively buffered when it stalls and falls even when it is fully loaded.

[0039] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0040] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A household elevator with a safety braking function for a household room, characterized in that: include: An elevator body, comprising an elevator shaft and an elevator car, wherein the elevator shaft comprises a pair of fixed plates and a pair of movable plates, wherein the pair of fixed plates are fixedly installed, and the pair of movable plates are rotatably installed at both end edges between the pair of fixed plates; A safety brake drive assembly includes a bidirectional lead screw, which is rotatably mounted near the top of the elevator shaft, and a pair of drive members are threadedly connected to the forward and reverse threads of the bidirectional lead screw, and the pair of drive members are used to drive a pair of movable plates to rotate between a pair of fixed plates; The buffer assembly includes a first buffer component, a second buffer component, a buffer block and a limit assembly. The first buffer component is installed at the bottom of the elevator shaft, the second buffer component is arranged above the first buffer component, and the buffer block is arranged above the second buffer component. A plurality of the first buffer components and the second buffer components are provided, and the plurality of the first buffer components and the second buffer components are all in a compressed state.

2. A household elevator with a safety braking function for a household room according to claim 1, characterized in that: Bearings are installed at both side edges of the opposite side walls of a pair of fixed plates, and a rotating shaft is fixedly connected to the side wall edges of the movable plate, and the rotating shaft is installed in the bearing.

3. A household elevator with a safety braking function for a household room according to claim 1, characterized in that: The driving assembly includes a first threaded connecting rod and a second threaded connecting rod, the first threaded connecting rod and the second threaded connecting rod are respectively threadedly connected to the square threads of the bidirectional screw, the bottoms of the first threaded connecting rod and the second threaded connecting rod are fixedly connected to a mounting plate, a driving rod is fixedly connected to the side wall of the mounting plate, an end of the driving rod away from the mounting plate is fixedly connected to the driving plate, and a side of the driving plate away from the driving rod abuts against the inner wall of the movable plate.

4. A household elevator with a safety braking function for a household room according to claim 3, characterized in that: The first threaded connecting rod and the second threaded connecting rod are respectively at equal distances from the movable plate on the adjacent side. A driven gear is fixedly connected at the center position of the bidirectional lead screw. The first threaded connecting rod and the second threaded connecting rod are symmetrically arranged on both sides of the driven gear. The driven gear is meshedly connected with a driving gear. A driving shaft is fixedly connected to the side wall of the driving gear, and a driving motor is installed at the end of the driving shaft away from the driving gear.

5. A household elevator with a safety braking function for a household room according to claim 4, characterized in that: Both ends of the bidirectional lead screw are fixedly connected to a limit block, a fixed bearing is installed on the outer wall of the limit block, a support rod is fixedly installed on the outer wall of the fixed bearing, and one end of the support rod away from the limit block is fixedly connected to the inner wall of the fixed plate.

6. A household elevator with a safety braking function for a household room according to claim 1, characterized in that: A pair of guide blocks are arranged between the pair of movable plates near the bottom in a front-to-back manner, a groove body is opened in the pair of guide blocks, and the guide blocks are slidably connected to a pair of sliding rods at both ends through the groove body, and a compression spring is installed between the ends of the pair of sliding rods placed in the guide blocks, and the end of the sliding rod placed on the outside of the guide block abuts against the inner wall of the movable plate.

7. A household elevator with a safety brake function for a household room according to claim 1, characterized in that: A plurality of blocking blocks are fixedly connected to the inner side wall of the movable plate, and the blocking blocks are evenly arranged on the inner side wall in a front-to-back and up-and-down manner. The blocking blocks are made of rubber material, and protective layers are provided on the left and right edges of the bottom of the elevator car.

8. A household elevator with a safety braking function for a household room according to claim 1, characterized in that: The first buffer member includes a base, which is installed at the bottom of the elevator shaft. A sleeve is fixedly connected to the base, a telescopic rod is telescopically installed in the sleeve, a first buffer spring is sleeved on the side wall of the telescopic rod, and a support block is fixedly connected to the telescopic rod.

9. A household elevator with a safety brake function for a household room according to claim 8, characterized in that: A first mounting plate is installed between the first buffer member and the second buffer member, a second mounting plate is installed between the second buffer member and the buffer block, the support block is fixedly connected to the bottom of the buffer block, the second buffer member includes a second buffer spring and a telescopic protective sleeve, the telescopic protective sleeve is sleeved on the outside of the second buffer spring, the lower end of the second buffer spring is installed on the first mounting plate, and the upper end of the second buffer spring is installed on the bottom of the second mounting plate.

10. A household elevator with a safety braking function for a household room according to claim 6, characterized in that: There are multiple limit assemblies, and the multiple limit assemblies are respectively arranged at the edge positions of the four corners of the second mounting plate. The limit assemblies include a slide groove, and the slide groove is opened at the edge position of the bottom of the second mounting plate. The slide groove is provided with a slide-out groove on the side away from the edge of the second mounting plate. A slider is slidably connected in the slide groove, and one end of the slider placed on the lower side of the slide groove is fixedly connected to a connecting rod, and the end of the connecting rod away from the slider is fixedly connected to the sliding rod.

Images