An elevator counterweight adjusting device with safety monitoring and protection function

Abstract

The present application relates to elevator counterweight adjustment related technical field, disclose a kind of elevator counterweight adjusting device with safety monitoring protection function, including elevator shaft, the inside one side of elevator shaft vertically slidingly equipped with car, the inside other side of elevator shaft vertically slidingly equipped with counterweight assembly, the side of elevator shaft vertically is equipped with several limiting components;The present application can timely monitor the change of car weight by the weight detection mechanism of car itself, so as to be able to timely control limiting component to quickly limit counterweight assembly, so as to avoid the displacement of counterweight assembly, prevent displacement when a large number of personnel or heavy objects enter the car, so as to improve the safety of car.

Description

Technical Field

[0001] This invention belongs to the technical field of elevator counterweight adjustment, and more specifically, it relates to an elevator counterweight adjustment device with safety monitoring and protection functions. Background Technology

[0002] Elevator counterweight, commonly known as a counterweight, consists of the elevator car and counterweight symmetrically mounted on the traction sheave of the main unit. When the car is half-loaded, the weights of the car and counterweight are approximately equal. At this time, the traction machine only needs to overcome friction to drive the elevator, achieving a labor-saving effect. During elevator commissioning or maintenance, it is sometimes necessary to adjust the counterweight to maintain its optimal balance. Stable and convenient adjustment of the counterweight is crucial for improving elevator operating efficiency, ensuring passenger safety, reducing equipment wear, maintaining balance, and adapting to changes in usage. However, existing elevator counterweight adjustment technologies have the following drawbacks:

[0003] 1. In the existing technology, during the elevator commissioning stage, the weight of the counterweight needs to be adjusted according to the maximum load of the car. However, when adjusting the counterweight components, there is a lack of limiting components, which makes it difficult to quickly adjust the weight of the counterweight components, thus affecting the efficiency of elevator commissioning.

[0004] 2. In the existing technology, during normal use of an elevator, the car and the counterweight assembly are connected by traction steel wire ropes, which are hung on the traction sheave. The traction sheave is driven by the traction mechanism, thereby moving the car up and down in the elevator shaft. However, when the weight inside the car suddenly changes too much, due to the lack of a limiting structure, it is not possible to limit and fix the counterweight assembly and the car when they stop moving, which can easily damage the braking system and pose safety problems.

[0005] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided an elevator counterweight adjustment device with safety monitoring and protection functions, in order to achieve a more practical and valuable purpose. Summary of the Invention

[0006] This invention provides an elevator counterweight adjustment device with safety monitoring and protection functions, which overcomes the above-mentioned defects in the prior art.

[0007] The purpose and effectiveness of this invention, which provides an elevator counterweight adjustment device with safety monitoring and protection functions, are achieved through the following specific technical means:

[0008] An elevator counterweight adjustment device with safety monitoring and protection functions includes an elevator shaft. A car is vertically slidably mounted on one side of the elevator shaft, and a counterweight assembly is vertically slidably mounted on the other side of the elevator shaft. Several limiting components are vertically mounted on one side of the elevator shaft. The counterweight assembly includes a housing. A first counterweight block is mounted on the upper side of the housing, and a protective cover is mounted on the lower side of the first counterweight block. A first sliding plate is slidably mounted inside the protective cover, and several limiting rods are fixedly mounted on the lower side of the first sliding plate. Several second counterweight blocks are placed on the lower side of the housing. A concave block is fixedly mounted on one side of each first counterweight block, and the concave block has two... The walls are provided with several openings; the limiting component includes a first housing, the interior of which is provided with an L-shaped partition, and the interior of the first housing is divided into an adjustment cavity and a limiting cavity by the L-shaped partition. The limiting cavity is fixedly provided with a second housing, which slides vertically inside the concave block. Several pairs of locking blocks are slidably provided on both sides of the second housing. Each pair of locking blocks has two first elastic protrusions on the side away from each other. A movable plate is slidably provided on the upper side inside the limiting cavity. A top rod is fixedly provided on the lower side of the movable plate. The lower ends of the top rod are slidably in contact with the inclined surfaces on the sides of each pair of locking blocks that are close to each other.

[0009] A further technical solution includes a plurality of first limiting holes vertically provided on each limiting rod, a plurality of second limiting holes penetrating vertically on each second counterweight, a plurality of third limiting holes penetrating horizontally on each second counterweight, a first hydraulic telescopic rod provided on one side of the first sliding plate, an E-shaped block fixedly provided at the extended end of the first hydraulic telescopic rod, a plurality of second hydraulic telescopic rods provided on the lower side of the E-shaped block, a first fixing steel pin provided at the extended end of each second hydraulic telescopic rod, a limiting plate provided inside the adjusting cavity, a plurality of second fixing steel pins provided on the side of the limiting plate near the protective cover, and a driving assembly for driving the limiting plate to move horizontally and vertically inside the adjusting cavity.

[0010] In a further technical solution, each of the first fixed steel pins slides horizontally within the first limiting hole and the third limiting hole. A plurality of limiting rods correspond one-to-one with a plurality of second limiting holes. Each limiting rod slides vertically within the second limiting hole. The first limiting holes on the plurality of limiting rods correspond to the plurality of third limiting holes. Two sliders are fixedly provided on the lower side of each pair of locking blocks. Two elastic elements are connected between one side of each pair of sliders and the two side walls of the second housing. A first sliding groove is provided in the middle of one side of the first housing. The concave block slides vertically within the first sliding groove.

[0011] In a further technical solution, two fixing blocks are symmetrically fixed on one side of the first counterweight, and two second sliding grooves are symmetrically provided on one side of the first housing, with the two fixing blocks sliding vertically within the two second sliding grooves respectively.

[0012] A further technical solution is provided with two pairs of fixing plates on both sides of the two fixing blocks, and two pairs of buffer plates symmetrically arranged on both sides of the inner side of the limiting cavity. Each pair of fixing plates has several slots on the side away from each other, and each pair of buffer plates has a sloping structure at both ends on the side close to each other. Each pair of buffer plates has several second elastic protrusions on the two sloping surfaces on the side close to each other, and each second elastic protrusion is in contact with the slot.

[0013] A further technical solution is provided in which two pairs of pressure plates are symmetrically slidably arranged on both sides of the inner side of the limiting cavity, and two pairs of movable blocks are symmetrically arranged on the lower sides of both ends of the movable plate. The side of each pair of movable blocks that is close to each other is in contact with the inclined surface of each pair of pressure plates that is far from each other. Two first hollow elastic elements are connected between each pair of pressure plates and each pair of buffer plates. Each pair of buffer plates slides horizontally inside the limiting cavity. Two electric telescopic rods are fixedly arranged on the upper side of the inner side of the limiting cavity, and the extended ends of the two electric telescopic rods are fixedly connected to the upper side of the movable plate.

[0014] In a further technical solution, two limiting blocks are slidably provided in the middle of the side of each pair of buffer plates that are close to each other, and several third elastic protrusions are provided on the side of each pair of limiting blocks that are close to each other, and each third elastic protrusion is in contact with the slot.

[0015] In a further technical solution, two second hollow elastic elements are provided on the side of each pair of limiting blocks that are far apart from each other and are respectively connected to the interior of each pair of buffer plates. The interior of each pair of second hollow elastic elements is respectively connected to the interior of each pair of first hollow elastic elements by two connecting channels.

[0016] In a further technical solution, two first stepper motors are installed on the inner sides of the protective cover, and two first lead screws are respectively provided at the output ends of the two first stepper motors. The outer sides of the two first lead screws are respectively in threaded contact with the two ends of the first slide plate. A traction mechanism is provided at the upper end of the elevator shaft, and the car, traction mechanism, and counterweight assembly are connected by steel cables.

[0017] In a further technical solution, the driving component includes a second slide plate, on which two multi-stage telescopic rods are symmetrically mounted. The extended ends of the two multi-stage telescopic rods are fixedly connected to one side of the limiting plate. Two second stepper motors are respectively installed on both sides of the interior of the adjustment cavity. The output ends of the two second stepper motors are respectively provided with two second lead screws. The outer sides of the two second lead screws are respectively in threaded contact with the two ends of the second slide plate. A fixing plate is fixedly provided on one side of the lower end of the L-shaped partition. The fixing plate is located inside the adjustment cavity. Several second counterweights are placed on the upper side of the fixing plate.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention provides an elevator counterweight adjustment device with safety monitoring and protection functions. By using a weight detection mechanism built into the car, the device can monitor changes in the car's weight in a timely manner, so as to control the limit component to quickly limit the counterweight component, thereby preventing displacement of the counterweight component and preventing displacement when a large number of people or heavy objects enter the car, thus improving the safety of the car.

[0020] This invention discloses an elevator counterweight adjustment device with safety monitoring and protection functions. Through the arrangement of locking blocks, first elastic protrusions, sliders, a second housing, concave blocks, and openings, the outer housing moves, causing the concave blocks to slide vertically within a first sliding groove, and the second housing to slide vertically within the groove of the concave blocks. The outer sides of each pair of first elastic protrusions slide into contact with the side walls of the concave blocks, causing the two first elastic protrusions and two locking blocks to move closer together. This movement of the two locking blocks causes the two sliders to move closer together, and the two sliders, in turn, stretch the two elastic elements, generating elastic force. When the concave blocks move so that the two first elastic protrusions align with the two openings, the elastic force of the two elastic elements causes the two locking blocks and the first elastic protrusions to move away from each other, allowing the two first elastic protrusions to enter the two openings respectively, thus providing a buffering effect for the vertical movement of the concave blocks. Furthermore, through the setting of the top rod, the movable plate moves downward, driving the top rod to move downward. The lower ends of the top rod contact the inclined surfaces of each pair of locking blocks, thereby causing each pair of locking blocks to move away from the first elastic protrusion. Several pairs of locking blocks enter several pairs of through holes to limit and fix the concave blocks, thereby limiting and fixing the counterweight assembly and preventing displacement when a large number of people or heavy objects enter the car, thus improving the safety of the car.

[0021] This invention discloses an elevator counterweight adjustment device with safety monitoring and protection functions. Through the arrangement of fixed blocks, fixed plates, slots, buffer plates, and second elastic protrusions, the movement of two fixed blocks drives the movement of two pairs of fixed plates. The plates are pressed into contact with the second elastic protrusions through the slots. Each pair of buffer plates has beveled ends on its adjacent side. This allows the fixed blocks to move upwards or downwards within the second groove into the middle of the adjacent side of each pair of buffer plates. During this process, the pressure and buffering effect of the second elastic protrusions on the fixed plates gradually increases, which is beneficial for buffering the vertical movement of the outer shell. This aligns the lower end of the adjustment cavity with the lower end of the protective cover, facilitating the limiting and fixing of the counterweight assembly and the car. Furthermore, through the arrangement of movable blocks, pressure plates, and a first hollow elastic element, the downward movement of the movable plate drives the two pairs of movable blocks downwards. By having the sides of each pair of movable blocks approaching each other contact the inclined surfaces of each pair of pressure plates away from each other, the pressure plates move closer together. This movement of the pressure plates causes the two first hollow elastic elements and the two buffer plates to move closer together. The two buffer plates then move closer together, causing the two limiting blocks to move closer together. This, in turn, causes several pairs of third elastic protrusions to move closer together. These third elastic protrusions then press against several slots on the two fixed plates, strengthening the limiting and fixing effect on the outer shell. Finally, through the second hollow elastic elements and the connecting channels, the two pressure plates continue to move closer together, and the two buffer plates are held in place by the two fixed plates. This allows the solution inside the two first hollow elastic elements to enter the two second hollow elastic elements through the two connecting channels. The expansion of the two second hollow elastic elements acts on the two limiting blocks, further strengthening the limiting and fixing effect of the two limiting blocks on the outer shell and improving the limiting and fixing effect on the counterweight assembly, thus preventing safety accidents. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Figure 1 This is a schematic diagram of the first isometric structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the second isometric structure of the present invention;

[0026] Figure 3 This is an isometric structural diagram of the counterweight component in this invention;

[0027] Figure 4 This is a front view schematic diagram of the counterweight component and the adjustment component in this invention;

[0028] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure at point AA;

[0029] Figure 6 for Figure 5 A magnified view of the structure at point E in the middle;

[0030] Figure 7 for Figure 5 Schematic diagram of the cross-sectional structure at point BB;

[0031] Figure 8 for Figure 5 Schematic diagram of the cross-sectional structure at the CC section;

[0032] Figure 9 This is a right-side structural schematic diagram of the counterweight component and the adjustment component in this invention;

[0033] Figure 10 for Figure 9 Schematic diagram of the cross-sectional structure at the middle DD section;

[0034] Figure 11 for Figure 10 A magnified view of the structure at point F in the middle;

[0035] Figure 12 for Figure 10 A magnified view of the structure at point G in the middle;

[0036] Figure 13 for Figure 12 A magnified view of the structure at point H in the middle.

[0037] Explanation of reference numerals in the attached figures:

[0038] Elevator shaft 10, traction mechanism 11, car 12, outer shell 13, first counterweight 14, first housing 15, protective cover 16, second counterweight 17, first slide rail 18, second slide rail 19, L-shaped partition 20, adjusting cavity 21, limiting cavity 22, electric telescopic rod 23, movable plate 24, top rod 25, first sliding plate 26, first stepper motor 27, first lead screw 28, limiting rod 29, first limiting hole 30, first hydraulic telescopic rod 31, E-block 32, second hydraulic telescopic rod 33, first fixing steel pin 34, second limiting hole 35, third Limiting hole 36, fixing plate 37, second stepper motor 38, second lead screw 39, second slide plate 40, multi-stage telescopic rod 41, through port 42, locking block 43, first elastic protrusion 44, slider 45, concave block 46, fixing block 47, fixing plate 48, slot 49, movable block 50, pressure plate 51, buffer plate 52, first hollow elastic element 53, second elastic protrusion 54, limiting block 55, second hollow elastic element 56, connecting channel 57, third elastic protrusion 58, elastic element 59, limiting plate 60, second fixing steel pin 61, second housing 62. Detailed Implementation

[0039] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0040] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0042] As attached Figure 1 To be continued Figure 13 As shown:

[0043] This invention provides an elevator counterweight adjustment device with safety monitoring and protection functions.

[0044] See attached document Figure 1 To be continued Figure 13 The elevator shaft 10 includes a car 12 that slides vertically on one side of the elevator shaft 10 and a counterweight assembly that slides vertically on the other side of the elevator shaft 10. Several limiting components are vertically provided on one side of the elevator shaft 10. The counterweight assembly includes a housing 13. A first counterweight block 14 is provided on the upper side of the housing 13. A protective cover 16 is provided on the lower side of the first counterweight block 14. A first sliding plate 26 is slidably provided inside the protective cover 16. Several limiting rods 29 are fixedly provided on the lower side of the first sliding plate 26. Several second counterweight blocks 17 are placed on the lower side of the housing 13. A concave block 46 is fixedly provided on one side of the first counterweight block 14. Several openings 42 are provided on both sides of the concave block 46. The limiting assembly includes a first housing 15, with an L-shaped partition 20 inside the first housing 15. The first housing 15 is divided into an adjustment cavity 21 and a limiting cavity 22 by the L-shaped partition 20. A second housing 62 is fixedly installed inside the limiting cavity 22. The second housing 62 slides vertically inside the concave block 46. Several pairs of locking blocks 43 are slidably provided on both sides of the second housing 62. Two first elastic protrusions 44 are provided on the side of each pair of locking blocks 43 that are far apart from each other. A movable plate 24 is slidably provided on the upper side inside the limiting cavity 22. A push rod 25 is fixedly provided on the lower side of the movable plate 24. The lower ends of the push rod 25 slide in contact with the inclined surfaces of each pair of locking blocks 43 that are close to each other.

[0045] Preferred options are shown in the appendix. Figure 4 To be continued Figure 6 Each limiting rod 29 is provided with several first limiting holes 30 vertically, each second counterweight 17 is provided with several second limiting holes 35 penetrating vertically, and each second counterweight 17 is provided with several third limiting holes 36 penetrating horizontally. A first hydraulic telescopic rod 31 is provided on one side of the first sliding plate 26. An E-type block 32 is fixedly provided at the extended end of the first hydraulic telescopic rod 31. Several second hydraulic telescopic rods 33 are provided on the lower side of the E-type block 32. A first fixing steel pin 34 is provided at the extended end of each second hydraulic telescopic rod 33. A limiting plate 60 is provided inside the adjusting cavity 21. Several second fixing steel pins 61 are provided on the side of the limiting plate 60 near the protective cover 16. A drive assembly for driving the limiting plate 60 to move horizontally and vertically is provided inside the adjusting cavity 21.

[0046] Preferred options are shown in the appendix. Figure 4 To be continued Figure 6 Appendix Figure 12 Appendix Figure 13Each first fixed steel pin 34 slides horizontally within the first limiting hole 30 and the third limiting hole 36. Several limiting rods 29 correspond one-to-one with several second limiting holes 35. Each limiting rod 29 slides vertically within the second limiting hole 35. The first limiting holes 30 on several limiting rods 29 correspond to several third limiting holes 36. Two sliders 45 are fixedly provided on the lower side of each pair of locking blocks 43. Two elastic elements 59 are connected between one side of each pair of sliders 45 and the two side walls of the second housing 62. A first sliding groove 18 is provided in the middle of one side of the first housing 15. The concave block 46 slides vertically within the first sliding groove 18.

[0047] Preferred options are shown in the appendix. Figure 3 To be continued Figure 4 Two fixing blocks 47 are symmetrically fixed on one side of the first counterweight 14, and two second sliding grooves 19 are symmetrically provided on one side of the first housing 15. The two fixing blocks 47 slide vertically in the two second sliding grooves 19 respectively.

[0048] Preferred options are shown in the appendix. Figure 3 Appendix Figure 10 To be continued Figure 11 Two pairs of fixing plates 48 are provided on both sides of the two fixing blocks 47. Two pairs of buffer plates 52 are symmetrically provided on both sides of the inner side of the limiting cavity 22. Several slots 49 are provided on the side of each pair of fixing plates 48 that are far apart from each other. Both ends of the side of each pair of buffer plates 52 that are close to each other are inclined. Several second elastic protrusions 54 are provided on the two inclined surfaces of the side of each pair of buffer plates 52 that are close to each other. Each second elastic protrusion 54 is in contact with the slot 49.

[0049] Preferred options are shown in the appendix. Figure 10 To be continued Figure 12 Two pairs of pressure plates 51 are symmetrically slidably arranged on both sides of the inner side of the limiting cavity 22. Two pairs of movable blocks 50 are symmetrically arranged on the lower sides of both ends of the movable plate 24. The side of each pair of movable blocks 50 that is close to each other is in contact with the inclined surface of each pair of pressure plates 51 that is far away from each other. Two first hollow elastic elements 53 are connected between each pair of pressure plates 51 and each pair of buffer plates 52. Each pair of buffer plates 52 slides horizontally inside the limiting cavity 22. Two electric telescopic rods 23 are fixedly arranged on the upper side of the inner side of the limiting cavity 22. The extended ends of the two electric telescopic rods 23 are fixedly connected to the upper side of the movable plate 24.

[0050] Preferred options are shown in the appendix. Figure 10 To be continued Figure 11 Two limiting blocks 55 are slidably provided in the middle of the side of each pair of buffer plates 52 that are close to each other. Several third elastic protrusions 58 are provided on the side of each pair of limiting blocks 55 that are close to each other. Each third elastic protrusion 58 is in pressure contact with the slot 49.

[0051] Preferred options are shown in the appendix. Figure 10 To be continued Figure 11 Each pair of limiting blocks 55 has two second hollow elastic elements 56 connected to the interior of each pair of buffer plates 52 on the side that is far apart from each other. The interior of each pair of second hollow elastic elements 56 is connected to the interior of each pair of first hollow elastic elements 53 by two connecting channels 57.

[0052] Preferred options are shown in the appendix. Figure 1 Appendix Figure 2 Appendix Figure 7 The protective cover 16 has two first stepper motors 27 installed on its inner sides. The output ends of the two first stepper motors 27 are provided with two first lead screws 28. The outer sides of the two first lead screws 28 are in threaded contact with the two ends of the first slide plate 26. The upper end of the elevator shaft 10 is provided with a traction mechanism 11. The car 12, the traction mechanism 11, and the counterweight assembly are connected by steel cables.

[0053] Preferred options are shown in the appendix. Figure 5 Appendix Figure 6 Appendix Figure 8 The drive assembly includes a second slide plate 40, on which two multi-stage telescopic rods 41 are symmetrically mounted. The extended ends of the two multi-stage telescopic rods 41 are fixedly connected to one side of the limiting plate 60. Two second stepper motors 38 are respectively installed on both sides of the interior of the adjustment cavity 21. Two second lead screws 39 are respectively provided at the output ends of the two second stepper motors 38. The outer sides of the two second lead screws 39 are respectively in threaded contact with the two ends of the second slide plate 40. A fixing plate 37 is fixedly provided on one side of the lower end of the L-shaped partition 20. The fixing plate 37 is located inside the adjustment cavity 21. Several second counterweights 17 are placed on the upper side of the fixing plate 37.

[0054] Specific usage of this invention:

[0055] When the elevator is operating normally, the traction mechanism 11 activates the control cable to move. The two ends of the cable are connected to the car 12 and the counterweight assembly, respectively, causing the car 12 to move to the corresponding floor and the counterweight assembly to move to the side of the corresponding limit assembly. The movement of the outer casing 13 causes the concave block 46 and the two fixed blocks 47 to move, allowing the concave block 46 to slide vertically within the first slide groove 18, and the two fixed blocks 47 to slide vertically within the two second slide grooves 19, respectively. The movement of the two fixed blocks 47 drives the movement of the two pairs of fixed plates 48. They are pressed and contacted by the second elastic protrusions 54 through the slots 49. Both ends of the side of each pair of buffer plates 52 that are close to each other are inclined. As the fixed blocks 47 move upward in the second slide groove 19 and enter the middle of the side of each pair of buffer plates 52 that are close to each other, or as the fixed blocks 47 move downward in the second slide groove 19 and enter the middle of the side of each pair of buffer plates 52 that are close to each other, the pressure and buffering degree of the fixed plates 48 by the second elastic protrusions 54 gradually increases. This is beneficial for buffering the up and down movement of the outer shell 13. It also allows the fixed blocks 47 to enter the middle of the side of each pair of buffer plates 52 that are close to each other to perform a limiting function, so as to limit and fix the counterweight component and the car 12.

[0056] Simultaneously, the movement of the outer shell 13 causes the concave block 46 to slide vertically within the first slide groove 18, and the second shell 62 to slide vertically within the groove of the concave block 46. Through the sliding contact between the outer sides of each pair of first elastic protrusions 44 and the side walls of the concave block 46, the two first elastic protrusions 44 and the two locking blocks 43 move closer together. The two locking blocks 43 moving closer together cause the two sliders 45 to move closer together, and the two sliders 45 moving closer together stretch the two elastic elements 59, generating elastic force. When the concave block 46 moves so that the two first elastic protrusions 44 correspond to the two openings 42, under the elastic force of the two elastic elements 59, the two locking blocks 43 and the first elastic protrusions 44 move away from each other, allowing the two first elastic protrusions 44 to enter the two openings 42 respectively, thus providing a buffering effect for the vertical movement of the concave block 46 and protecting the car 12.

[0057] Secondly, when the two fixed plates 48 contact the two limiting blocks 55 respectively, the car 12 moves to the corresponding floor, and the traction mechanism 11 stops. The car 12 opens, and the weight detection mechanism built into the car 12 detects a large number of people or heavy objects entering the car 12. At this time, the control system controls the two electric telescopic rods 23 to extend and drive the movable plate 24 to move downward. The downward movement of the movable plate 24 drives the top rod 25 to move downward. The two sides of the lower end of the top rod 25 contact the inclined side of each pair of locking blocks 43, so that each pair of two locking blocks 43 moves away from the first elastic protrusion 44. Several pairs of locking blocks 43 enter several pairs of openings 42 to limit and fix the concave block 46, preventing the counterweight assembly from shifting and preventing the car 12 from shifting.

[0058] Simultaneously, the movable plate 24 moves downward, causing the two pairs of movable blocks 50 to move downward. Each pair of movable blocks 50, with one side closer to the other, contacts the inclined surface of each pair of pressure plates 51, causing the pressure plates 51 to move closer together. This movement of the two pressure plates 51 causes the two first hollow elastic elements 53 and the two buffer plates 52 to move closer together. The two buffer plates 52 then move the two limiting blocks 55 closer together, which in turn causes several pairs of third elastic protrusions 58 to move closer together. These third elastic protrusions 58 then press against several slots 49 on the two fixed plates 48, thereby strengthening the limiting and fixing effect on the outer shell 13 and improving the limiting and fixing effect on the car 12 and the counterweight assembly.

[0059] Then, the two pressure plates 51 continue to move closer to each other, and the two buffer plates 52 are held in place by the two fixing plates 48. This allows the solution in the two first hollow elastic elements 53 to enter the two second hollow elastic elements 56 through the two connecting channels 57, causing the two second hollow elastic elements 56 to expand and act on the two limiting blocks 55 respectively. This further strengthens the limiting and fixing effect of the two limiting blocks 55 on the outer shell 13, preventing displacement when a large number of people or heavy objects enter the car 12, thereby improving the safety of the car 12.

[0060] Finally, after a large number of people or heavy objects enter the car 12, the electric telescopic rod 23 retracts, causing the movable plate 24 to move upward. The upward movement of the movable plate 24 causes the top rod 25 to move upward. The upward movement of the top rod 25 disengages from several pairs of locking blocks 43, thereby causing the several pairs of locking blocks 43 to approach each other under the elastic force of several pairs of elastic elements 59. This allows the several pairs of locking blocks 43 to disengage from several pairs of openings 42, so that the second housing 62 can slide vertically within the groove of the concave block 46. The traction mechanism 11 starts to control the movement of the steel cable, which is connected to the car 12 and the counterweight assembly at both ends, thereby moving the car 12 to the corresponding floor.

[0061] During the elevator commissioning phase, the weight of the counterweight assembly needs to be adjusted according to the maximum load capacity of the car 12. The traction mechanism 11 initiates the movement of the control cable, connecting the two ends of the cable to the car 12 and the counterweight assembly respectively, thereby moving the car 12 to the corresponding floor and moving the counterweight assembly to one side of the corresponding limit assembly. The movement of the outer casing 13 drives the concave block 46 and the two fixed blocks 47 to move, thereby causing the concave block 46 to slide vertically in the first slide groove 18, and the two fixed blocks 47 to slide vertically in the two second slide grooves 19 respectively. The movement of the two fixed blocks 47 drives the movement of the two pairs of fixed plates 48. They are pressed and contacted by the second elastic protrusions 54 through the slots 49. Both ends of the side of each pair of buffer plates 52 that are close to each other are inclined. As the fixed blocks 47 move upward in the second slide groove 19 and enter the middle of the side of each pair of buffer plates 52 that are close to each other, or as the fixed blocks 47 move downward in the second slide groove 19 and enter the middle of the side of each pair of buffer plates 52 that are close to each other, the pressure and buffering degree of the fixed plates 48 by the second elastic protrusions 54 gradually increases. This is beneficial for buffering the up and down movement of the outer shell 13. It also allows the fixed blocks 47 to enter the middle of the side of each pair of buffer plates 52 that are close to each other to perform a limiting function, so as to limit and fix the counterweight component and the car 12.

[0062] Simultaneously, the movement of the outer shell 13 causes the concave block 46 to slide vertically within the first slide groove 18, and the second shell 62 to slide vertically within the groove of the concave block 46. Through the sliding contact between the outer sides of each pair of first elastic protrusions 44 and the side walls of the concave block 46, the two first elastic protrusions 44 and the two locking blocks 43 move closer together. The two locking blocks 43 moving closer together cause the two sliders 45 to move closer together, and the two sliders 45 moving closer together stretch the two elastic elements 59, generating elastic force. When the concave block 46 moves so that the two first elastic protrusions 44 correspond to the two openings 42, under the elastic force of the two elastic elements 59, the two locking blocks 43 and the first elastic protrusions 44 move away from each other, allowing the two first elastic protrusions 44 to enter the two openings 42 respectively, thus providing a buffering effect for the vertical movement of the concave block 46 and protecting the car 12.

[0063] When it is necessary to adjust the weight of the counterweight component, the control system uses the limit component to limit the counterweight component, so that the weight of the counterweight component can be adjusted quickly.

[0064] When the weight of the counterweight assembly is increased, the control system activates two first stepper motors 27, which in turn drive two first lead screws 28 to rotate clockwise. The outer sides of the two first lead screws 28 engage with the threads at both ends of the first slide plate 26, causing the first slide plate 26 to move upwards. This upward movement of the first slide plate 26 drives three limit rods 29 and several second counterweights 17 to move upwards, thus freeing up the lower interior of the outer casing 13. At this time, the control system activates two second stepper motors 38, which in turn drive two second lead screws 39 to rotate clockwise. The outer sides of the two second lead screws 39 engage with the threads at both ends of the second slide plate 40, causing the second slide plate 40 to move upwards. This upward movement of the second slide plate 40 drives two multi-stage telescopic rods 41, limit plates 60, and three second fixing pins 61 to move upwards. When the three second fixed steel pins 61 are aligned with the three third limiting holes 36 on the second counterweight 17 located at the highest point on the upper side of the fixed plate 37, the two multi-stage telescopic rods 41 extend and drive the limiting plate 60 and the three second fixed steel pins 61 to move, so that the three second fixed steel pins 61 enter the three third limiting holes 36 of the second counterweight 17.

[0065] Next, the control system activates two second stepper motors 38, which in turn drive two second lead screws 39 to rotate forward, causing the limiting plate 60 and three second fixed steel pins 61 to move upward, thus moving the second counterweight 17 upward. The two multi-stage telescopic rods 41 retract, causing the limiting plate 60 and three second fixed steel pins 61 to move, thus misaligning the second counterweight 17 with the fixed plate 37. The two second stepper motors 38 then activate, causing the two second lead screws 39 to rotate in reverse, thus moving the limiting plate 60 and second fixed steel pins 61 downward, moving the second counterweight 17 to the lower end of the adjusting cavity 21. At this point, the lower end of the adjusting cavity 21 is aligned with the lower end of the outer shell 13. The two multi-stage telescopic rods 41 extend, causing the limiting plate 60 and three second fixed steel pins 61 to move, thus moving the second counterweight 17 horizontally to the lower end of the outer shell 13.

[0066] Then, the control system starts the two first stepper motors 27, which in turn drive the two first lead screws 28 to reverse, causing the first slide plate 26 to move downwards. This downward movement of the first slide plate 26 drives the three limit rods 29 downwards, so that the lower ends of the three limit rods 29 enter the three second limit holes 35 of the second counterweight 17. At this time, the two multi-stage telescopic rods 41 retract, causing the limit plate 60 to move horizontally. The second counterweight 17 is then limited by the three limit rods 29, causing the three second fixing steel pins 61 to disengage from the three third limit holes 36 of the second counterweight 17. The first slide plate 26 continues to move downwards, driving the three limit rods 29 downwards, so that the three limit rods 29 pass through the second counterweight 17 vertically. When the three first limit holes 30 on the three limit rods 29 correspond to the three first limit holes 30 on the second counterweight 17, the two first stepper motors 27 stop.

[0067] Finally, the control system retracts the three second hydraulic telescopic rods 33, causing the three first fixed steel pins 34 to disengage from the three limiting rods 29. The first hydraulic telescopic rods 31 extend, causing the E-block 32 and the three second hydraulic telescopic rods 33 to move downwards. When the three first fixed steel pins 34 align with the three third limiting holes 36 of the lowest second counterweight block 17, the three second hydraulic telescopic rods 33 extend, causing the three first fixed steel pins 34 to move. This allows the three first fixed steel pins 34 to enter the three first limiting holes 30 of the three limiting rods 29 and the three third limiting holes 36 of the same second counterweight block 17, thereby increasing the number of second counterweight blocks 17 on the three limiting rods 29 and increasing the weight of the counterweight assembly.

[0068] When the weight of the counterweight assembly is reduced, the control system retracts the three second hydraulic telescopic rods 33, causing the three first fixing steel pins 34 to disengage from the three limiting rods 29. The retraction of the first hydraulic telescopic rods 31 causes the E-block 32 and the three second hydraulic telescopic rods 33 to move upwards, aligning the three first fixing steel pins 34 with the three third limiting holes 36 of the second counterweight block 17. The three first fixing steel pins 34 extending from the three second hydraulic telescopic rods 33 then enter the three first limiting holes 30 of the three limiting rods 29 and the three third limiting holes 36 of the same second counterweight block 17. At this time, the number of second counterweight blocks 17 limited on the three limiting rods 29 decreases, and the first sliding plate 26 moves upwards, causing the three limiting rods 29 to move upwards, thus disengaging the three limiting rods 29 from the lowest second counterweight block 17.

[0069] Next, the limiting plates 60 and three second fixing pins 61 of the two multi-stage telescopic rods 41 extend horizontally, causing the three second fixing pins 61 to enter the three third limiting holes 36 of the second counterweight 17. The second sliding plate 40 moves upward, causing the limiting plates 60 and the three second fixing pins 61 to move upward, thereby lifting the second counterweight 17. The retraction of the two multi-stage telescopic rods 41 causes the limiting plates 60 and the three second fixing pins 61 to move horizontally, thereby moving the second counterweight 17 into the first housing 15, so as to reduce the number of second counterweights 17 in the outer housing 13, thereby reducing the weight of the counterweight assembly.

[0070] Finally, after the counterweight assembly is adjusted, the electric telescopic rod 23 retracts, causing the movable plate 24 to move upward. The upward movement of the movable plate 24 causes the top rod 25 to move upward. The upward movement of the top rod 25 disengages from the several pairs of locking blocks 43. Under the elastic force of the several pairs of elastic elements 59, the several pairs of locking blocks 43 move closer to the first elastic protrusion 44, thereby disengaging the several pairs of locking blocks 43 from the several pairs of openings 42, allowing the second housing 62 to slide vertically within the groove of the concave block 46. The traction mechanism 11 starts to control the movement of the steel cable, connecting the two ends of the steel cable to the car 12 and the counterweight assembly respectively, thereby moving the car 12 to the corresponding floor. Through the counterweight assembly, the limiting assembly, and the weight detection mechanism built into the car 12, the car 12 can perform safety monitoring and protection.

[0071] This invention discloses an elevator counterweight adjustment device with safety monitoring and protection functions. Through the arrangement of locking blocks 43, first elastic protrusions 44, sliders 45, a second housing 62, concave blocks 46, and openings 42, the housing 13 moves, causing the concave blocks 46 to slide vertically within the first sliding groove 18, and the second housing 62 to slide vertically within the groove of the concave blocks 46. The outer sides of each pair of first elastic protrusions 44 slide into contact with the side walls of the concave blocks 46, causing the two first elastic protrusions 44 and the two locking blocks 43 to move closer together. This movement of the two locking blocks 43 causes the two sliders 45 to move closer together, and the two sliders 45 stretch the two elastic elements 59, generating elastic force. When the concave blocks 46 move, aligning the two first elastic protrusions 44 with the two openings 42, the elastic force of the two elastic elements 59 causes the two locking blocks 43 and the first elastic protrusions 44 to move away from each other, allowing the two first elastic protrusions 44 to enter the two openings 42 respectively, thus providing a buffering effect for the counterweight assembly. Furthermore, by setting the top rod 25, the movable plate 24 moves downward, driving the top rod 25 to move downward. The lower ends of the top rod 25 contact the inclined surfaces of each pair of locking blocks 43, thereby causing each pair of locking blocks 43 to move away from the first elastic protrusion 44. Several pairs of locking blocks 43 enter several pairs of openings 42 to limit and fix the concave block 46, thereby limiting and fixing the counterweight assembly and preventing displacement when a large number of people or heavy objects enter the car 12, thus improving the safety of the car 12.

[0072] The present invention provides an elevator counterweight adjustment device with safety monitoring and protection functions. Through the arrangement of fixed blocks 47, fixed plates 48, slots 49, buffer plates 52, and second elastic protrusions 54, the movement of two fixed blocks 47 drives the movement of two pairs of fixed plates 48. The slots 49 and second elastic protrusions 54 are pressed into contact. Each pair of buffer plates 52 has inclined ends on the side closest to each other. This allows the fixed blocks 47 to move upwards into the middle of the side closest to each pair of buffer plates 52 within the second slide groove 19, or downwards into the middle of the side closest to each pair of buffer plates 52 within the second slide groove 19. During this process, the fixed plates 48 are gradually compressed and buffered by several second elastic protrusions 54, which helps to buffer the vertical movement of the outer shell 13. Furthermore, the fixed blocks 47 can enter the middle of the side closest to each pair of buffer plates 52 for a limiting effect, thereby aligning the lower end of the adjustment cavity 21 with the lower end of the protective cover 16, facilitating the limiting and fixing of the counterweight adjustment assembly, and also facilitating the limiting and fixing of the car 12. Then, through the arrangement of movable blocks 50, pressure plates 51, and first hollow elastic elements 53, the movable plate 24 moves downward, causing the two pairs of movable blocks 50 to move downward. The sides of each pair of movable blocks 50 that are close to each other contact the inclined surfaces of each pair of pressure plates 51 that are far apart from each other, thus bringing each pair of pressure plates 51 closer together. The two pressure plates 51 moving closer together cause the two first hollow elastic elements 53 and the two buffer plates 52 to move closer together. The two buffer plates 52 moving closer together cause the two limiting blocks 55 to move closer together, thus bringing several pairs of third elastic protrusions 58 closer together. The several pairs of third elastic protrusions 58 press against several slots 49 on the two fixed plates 48, thereby strengthening the limiting and fixing effect on the outer shell 13. Finally, through the setting of the second hollow elastic element 56 and the connecting channel 57, the two pressure plates 51 continue to move closer to each other and cooperate. The two buffer plates 52 are held in place by the two fixing plates 48, so that the solution in the two first hollow elastic elements 53 enters the two second hollow elastic elements 56 through the two connecting channels 57 respectively. This causes the two second hollow elastic elements 56 to expand and act on the two limiting blocks 55 respectively, further strengthening the limiting and fixing effect of the two limiting blocks 55 on the outer shell 13, further improving the limiting and fixing effect on the counterweight assembly, and preventing the occurrence of safety accidents.

[0073] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. An elevator counterweight adjustment device with safety monitoring and protection functions, characterized in that: The system includes an elevator shaft (10), a car (12) is vertically slidably disposed on one side of the elevator shaft (10), a counterweight assembly is vertically slidably disposed on the other side of the elevator shaft (10), and several limiting components are vertically disposed on one side of the elevator shaft (10); the counterweight assembly includes a housing (13), a first counterweight block (14) is disposed on the upper side of the housing (13), a protective cover (16) is disposed on the lower side of the first counterweight block (14), a first sliding plate (26) is slidably disposed inside the protective cover (16), several limiting rods (29) are fixedly disposed on the lower side of the first sliding plate (26), several second counterweight blocks (17) are placed on the lower side of the housing (13), a concave block (46) is fixedly disposed on one side of the first counterweight block (14), and several openings (42) are provided on both sides of the concave block (46); The limiting component includes a first housing (15), an L-shaped partition (20) is provided inside the first housing (15), and an adjustment cavity (21) and a limiting cavity (22) are separated inside the first housing (15) by the L-shaped partition (20). A second housing (62) is fixedly provided inside the limiting cavity (22). The second housing (62) slides vertically inside the concave block (46). Several pairs of locking blocks (43) are slidably provided on both sides of the second housing (62). Two first elastic protrusions (44) are provided on the side of each pair of locking blocks (43) that are far apart from each other. A movable plate (24) is slidably provided on the upper side inside the limiting cavity (22). A top rod (25) is fixedly provided on the lower side of the movable plate (24). The two sides of the lower end of the top rod (25) are slidably in contact with the inclined surface of each pair of locking blocks (43) that are close to each other. Two sliders (45) are fixedly provided on the lower side of each pair of the card blocks (43). Two elastic elements (59) are connected between one side of each pair of sliders (45) and the two side walls of the second housing (62). A first groove (18) is provided in the middle of one side of the first housing (15). The concave block (46) slides vertically in the first groove (18). The movement of the outer shell causes the concave block to slide vertically within the first groove, and the second shell to slide vertically within the groove of the concave block. Through the sliding contact between the outer side of each pair of first elastic protrusions and the two side walls of the concave block, the two first elastic protrusions and the two locking blocks move closer to each other. The two locking blocks move closer to each other, causing the two sliders to move closer to each other. The two sliders move closer to each other, stretching the two elastic elements and generating elastic force. When the concave block moves so that the two first elastic protrusions correspond to the two openings, under the elastic force of the two elastic elements, the two locking blocks and the first elastic protrusions move away from each other, so that the two first elastic protrusions enter the two openings respectively, so as to buffer the up and down movement of the concave block. The movable plate moves downward, causing the top rod to move downward. The two sides of the lower end of the top rod contact the inclined surface of each pair of locking blocks that are close to each other, thereby causing each pair of two locking blocks to move away from the first elastic protrusion. Several pairs of locking blocks enter several pairs of through holes to facilitate the limiting and fixing of the concave block.

2. The elevator counterweight adjustment device with safety monitoring and protection function according to claim 1, characterized in that: Each of the limiting rods (29) is provided with a plurality of first limiting holes (30) vertically, and each of the second counterweights (17) is provided with a plurality of second limiting holes (35) penetrating vertically. Each of the second counterweights (17) is provided with a plurality of third limiting holes (36) penetrating horizontally. A first hydraulic telescopic rod (31) is provided on one side of the first sliding plate (26). An E-type block (32) is fixedly provided at the extended end of the first hydraulic telescopic rod (31). A plurality of second hydraulic telescopic rods (33) are provided on the lower side of the E-type block (32). A first fixing steel pin (34) is provided at the extended end of each second hydraulic telescopic rod (33). A limiting plate (60) is provided inside the adjusting cavity (21). A plurality of second fixing steel pins (61) are provided on the side of the limiting plate (60) near the protective cover (16). A driving component for driving the limiting plate (60) to move horizontally and vertically is provided inside the adjusting cavity (21).

3. The elevator counterweight adjustment device with safety monitoring and protection function according to claim 2, characterized in that: Each of the first fixed steel pins (34) slides horizontally within the first limiting hole (30) and the third limiting hole (36). A plurality of limiting rods (29) correspond one-to-one with a plurality of second limiting holes (35). Each of the limiting rods (29) slides vertically within the second limiting hole (35). A plurality of the first limiting holes (30) on the limiting rods (29) correspond to a plurality of the third limiting holes (36).

4. The elevator counterweight adjustment device with safety monitoring and protection function according to claim 1, characterized in that: Two fixing blocks (47) are symmetrically fixed on one side of the first counterweight (14), and two second sliding grooves (19) are symmetrically provided on one side of the first housing (15). The two fixing blocks (47) slide vertically in the two second sliding grooves (19) respectively.

5. The elevator counterweight adjustment device with safety monitoring and protection function according to claim 4, characterized in that: Two pairs of fixing plates (48) are provided on both sides of the two fixing blocks (47). Two pairs of buffer plates (52) are symmetrically provided on both sides of the inner side of the limiting cavity (22). Several slots (49) are provided on the side of each pair of fixing plates (48) that are far apart from each other. Both ends of the side of each pair of buffer plates (52) that are close to each other are inclined. Several second elastic protrusions (54) are provided on the two inclined surfaces of the side of each pair of buffer plates (52) that are close to each other. Each second elastic protrusion (54) is in contact with the slot (49) by compression.

6. The elevator counterweight adjustment device with safety monitoring and protection function according to claim 5, characterized in that: Two pairs of pressure plates (51) are symmetrically slidably arranged on both sides of the inner side of the limiting cavity (22). Two pairs of movable blocks (50) are symmetrically arranged on the lower sides of both ends of the movable plate (24). The side of each pair of movable blocks (50) that is close to each other is in contact with the inclined surface of each pair of pressure plates (51) that is far away from each other. Two first hollow elastic elements (53) are connected between each pair of pressure plates (51) and each pair of buffer plates (52). Each pair of buffer plates (52) slides horizontally inside the limiting cavity (22). Two electric telescopic rods (23) are fixedly arranged on the upper side of the inner side of the limiting cavity (22). The protruding ends of the two electric telescopic rods (23) are fixedly connected to the upper side of the movable plate (24).

7. An elevator counterweight adjustment device with safety monitoring and protection functions according to claim 6, characterized in that: Two limiting blocks (55) are slidably provided in the middle of the side of each pair of buffer plates (52) that are close to each other. Several third elastic protrusions (58) are provided on the side of each pair of limiting blocks (55) that are close to each other. Each third elastic protrusion (58) is in contact with the slot (49) by compression.

8. The elevator counterweight adjustment device with safety monitoring and protection function according to claim 7, characterized in that: Each pair of limiting blocks (55) has two second hollow elastic elements (56) connected to the interior of each pair of buffer plates (52) on the side that is far apart from each other. The interior of each pair of second hollow elastic elements (56) is connected to the interior of each pair of first hollow elastic elements (53) by two connecting channels (57).

9. The elevator counterweight adjustment device with safety monitoring and protection function according to claim 1, characterized in that: Two first stepper motors (27) are installed on the inner sides of the protective cover (16). The output ends of the two first stepper motors (27) are respectively provided with two first lead screws (28). The outer sides of the two first lead screws (28) are respectively in threaded contact with the two ends of the first slide plate (26). The upper end of the elevator shaft (10) is provided with a traction mechanism (11). The car (12), the traction mechanism (11), and the counterweight assembly are connected by steel cables.

10. An elevator counterweight adjustment device with safety monitoring and protection functions according to claim 2, characterized in that: The drive assembly includes a second slide plate (40), on which two multi-stage telescopic rods (41) are symmetrically mounted. The extended ends of the two multi-stage telescopic rods (41) are fixedly connected to one side of the limiting plate (60). Two second stepper motors (38) are respectively installed on both sides of the interior of the adjustment cavity (21). The output ends of the two second stepper motors (38) are respectively provided with two second lead screws (39). The outer sides of the two second lead screws (39) are respectively in threaded contact with the two ends of the second slide plate (40). A fixing plate (37) is fixedly provided on one side of the lower end of the L-shaped partition (20). The fixing plate (37) is located inside the adjustment cavity (21). Several second counterweights (17) are placed on the upper side of the fixing plate (37).

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