A mechanical linkage structure of a construction hoist

Abstract

The embodiment of the present application provides a mechanical linkage structure of a construction elevator, which relates to the technical field of elevators. The mechanical linkage structure of the construction elevator includes a shaft mounting frame, a speed limiter, a buffer assembly and a clamping assembly; the top seat is equipped with a lifting mechanism for driving the chassis to lift; the pressure rope transmission sleeve is arranged on the speed limiting pulley and the surface of the transmission pulley, and the lower end of the wheel seat is fixed with a limiting block; the elastic compression body is arranged in the tube body, and the frame is equipped with a resistance plate that is supported by the bottom of the chassis; the limiting slider is slidably connected to the base, and a compression spring is connected between the limiting slider and the base; the resistance plate installed through the frame contacts the falling chassis, receives the falling chassis, and provides an upward support force to offset the kinetic energy of the fall. Through sufficient descending deceleration space, the chassis can be effectively and slowly stopped to avoid damage caused by excessive impact force.

Description

Technical Field

[0001] The present application relates to the field of elevators, and in particular, to a mechanical linkage structure of a construction elevator. Background Art

[0002] At present, the elevator is a lifting mechanical equipment or device that carries people or goods on a platform or semi-enclosed platform in a vertical up and down channel. At present, safety issues frequently occur in the construction of buildings. During the construction of the main building project, it must be combined with a construction elevator. The guide frame of the construction elevator, that is, the construction elevator, is connected and fixed to the main structure of the building through a bracket. The construction elevator is used for vertical transportation in construction. It is a dual-purpose elevator for carrying people and materials. Because it is attached to the outside of the main building, it is also called an external elevator. The use of construction elevators in high-rise buildings is becoming more and more common.

[0003] As an important part of the safe operation of the elevator, the speed limiter bears the important responsibility of triggering the emergency braking system when the elevator is overspeeding to prevent the elevator car from falling out of control or hitting the top. The working principle of the traditional centrifugal block speed limiter is based on centrifugal force. When the elevator speed exceeds the predetermined threshold, the centrifugal force causes the block to be thrown outward, thereby triggering a series of mechanical chain reactions to achieve emergency braking of the elevator.

[0004] In the existing centrifugal block speed limiter, when the elevator is overspeeding and braking, the block component of the existing centrifugal block speed limiter will trigger the action of the pressure claw. After the pressure claw rotates, it will disengage from the locking mating surface of the pawl in the ratchet. The pawl will engage with the ratchet under the action of the tension spring. The ratchet rotates and drives the hitting plate component and the rope pressing bracket, so that the rope pressing plate on the rope pressing bracket clamps the wire rope to complete the mechanical action of the speed limiter.

[0005] When the pressure rope on the speed limiter and the lifting wire rope of the elevator break at the same time, the self-locking function of the elevator fails, and the falling chassis can only be received by the buffer mechanism installed at the bottom of the elevator to weaken the kinetic energy of the chassis and reduce the impact;

[0006] The above-mentioned prior art solutions have the following defects: the buffering space of the buffer mechanism installed at the bottom of the elevator is limited. When the chassis is on a low floor, the buffer mechanism can barely absorb the impact. However, if the chassis falls from a high floor, it has a large kinetic energy. At this time, if the chassis is stopped at a high speed in a short distance within a limited vertical space, the chassis and the passengers inside will still suffer great impact damage. Summary of the invention

[0007] The present application aims to solve at least one of the technical problems existing in the prior art. According to the mechanical linkage structure of the construction elevator of the embodiment of the present application, it includes a shaft mounting frame, a speed limiter, a buffer assembly and a clamping assembly;

[0008] The shaft mounting frame comprises a base, a top seat and a column, the lower end of the column is fixed to the base, the upper end of the column is fixed to the top seat, a machine box is arranged between the base and the top seat, and a lifting mechanism for driving the machine box to be lifted and lowered is installed on the top seat;

[0009] The speed limiter includes a speed limiting pulley, a transmission pulley and a pressure rope, the speed limiting pulley is rotatably mounted on the surface of the top seat, the base is provided with a limiting groove, a wheel seat is slidably inserted in the limiting groove, the transmission pulley is rotatably mounted on the upper end of the wheel seat, the pressure rope transmission sleeve is arranged on the speed limiting pulley and the transmission pulley surface, a limiting block is fixed at the lower end of the wheel seat, and the limiting block is slidably arranged in the limiting groove;

[0010] The buffer assembly includes a tube body, a rod body and an elastic compression body, the tube body is fixed to the lower surface of the base, the lower end of the rod body is slidably inserted in the tube body, a frame is fixed to the upper end of the rod body, the frame is slidably connected to the column, the elastic compression body is arranged in the tube body, and the frame is installed with a contact plate that is supported by the bottom of the chassis;

[0011] The clamping assembly includes a clamping block, a connecting rod and a limiting slider, the limiting slider is slidably connected to the base, a compression spring is connected between the limiting slider and the base, one end of the connecting rod is hinged to the limiting slider, and the other end of the connecting rod is hinged to the clamping block, the frame is provided with a clamping slot, the clamping block is engaged with the clamping slot, and a steel wire rope is connected between the limiting slider and the wheel seat.

[0012] When the lifting device is lifted up, the lifting device is in a state of being lifted and lowered, and ...

[0013] In addition, the mechanical linkage structure of the construction elevator according to the embodiment of the present application also has the following additional technical features:

[0014] In a preferred embodiment of the present invention, the lifting mechanism includes a reduction motor, a driving wheel, a pulley and a counterweight. The driving wheel is rotatably installed on the surface of the top seat, the driving shaft of the reduction motor is transmission-connected to the driving wheel, the pulley is rotatably installed on the top of the chassis, the counterweight is slidably arranged in the vertical direction of the shaft mounting frame, and a chain is fixed to the top seat, and the chain passes through the pulley and the driving wheel in sequence and is fixedly connected to the counterweight.

[0015] In a preferred embodiment of the present invention, the reduction motor is fixedly connected to the top seat, a worm is coaxially fixed to the driving shaft of the reduction motor, a worm wheel is coaxially fixed to the driving wheel, the worm is meshed with the worm wheel, and an electromagnetic brake pad is also installed on the driving shaft of the reduction motor.

[0016] In a preferred embodiment of the present invention, four columns are provided, and the four columns are arranged in parallel at the corners. The chassis is arranged in a frame surrounded by the four columns. The shaft mounting frame is fixed with a chassis slide rail, and the chassis slide rail is slidably connected to a chassis slider, and the chassis slider is fixedly connected to the side wall of the chassis.

[0017] In a preferred embodiment of the present invention, a counterweight slide rail is fixed to the shaft mounting frame, and counterweight sliding blocks slidably connected to the counterweight slide rail are respectively fixed to both sides of the counterweight.

[0018] In a preferred embodiment of the present invention, the elastic compression body is a compressed spring or compressed gas, and a sensor for detecting the pressure at the bottom of the tube body is installed inside the tube body.

[0019] In a preferred embodiment of the present invention, the pipe body is a pre-buried pipe, and the pipe body is arranged parallel to the column.

[0020] In a preferred embodiment of the present invention, two clamping blocks are symmetrically arranged, and the two clamping blocks are respectively hinged to the limit sliding block through corresponding connecting rods.

[0021] In a preferred embodiment of the present invention, hinge seats are respectively installed at both ends of the connecting rod, a limiting slide groove is provided on the surface of the base, the limiting slider is slidably engaged in the limiting slide groove, one end of the compression spring is fixedly connected to the inner wall of the limiting slide groove, the other end of the compression spring is fixedly connected to the limiting slider, a guide groove is provided on the surface of the base, and the clamping block is slidably engaged in the guide groove.

[0022] In a preferred embodiment of the present invention, the rod body slides through the through groove opened on the surface of the base, a through hole is opened between the limiting slide groove and the limiting groove, the wire rope slides through the through hole, a guide wheel is installed in the limiting groove, and the surface of the wire rope is arranged corresponding to the wheel groove of the guide wheel.

[0023] Only relying on the elastic force support of the elastic compression body to offset the downward kinetic energy of the chassis, when the chassis is overloaded or the kinetic energy of falling downward is too large, the pressure on the buffer component is too large, causing damage to the buffer component and making the buffer ineffective. For this reason, the following is a specific implementation plan of the mechanical linkage structure of the construction elevator according to the present application with reference to the accompanying drawings:

[0024] In a preferred embodiment of the present invention, a braking mechanism is installed on the frame, and the braking mechanism brakes the frame during the downward sliding process;

[0025] The braking mechanism comprises a roller, a first gear and a rack, the roller is in transmission connection with the surface of the first gear, the first gear is meshed with the rack, a brake block is fixed at one end of the rack, one end of the brake block is arranged corresponding to the surface of the column, and the surface of the roller is in rolling contact with the surface of the column;

[0026] The rack is rotatably mounted on the surface of the frame, a connecting plate is rotatably mounted on the frame, one end of the connecting plate is rotatably connected to the central axis of the roller, the other end of the connecting plate is rotatably connected to the central axis of the first gear, and a torsion spring is mounted on the connecting plate.

[0027] When the frame rises vertically along the shaft mounting frame, the roller rolls in contact with the surface of the column, driving the first gear to rotate, so that the rotation of the first gear pushes the rack to slide, and the sliding of the rack makes the brake block at the end move away from the surface of the column. The torsion spring pushes the connecting plate to rotate around the axis of the first gear, so that the roller elastically fits the surface. When the frame rises, the torsion spring can be compressed so that the roller and the column touch and slide lightly to reduce the friction during the rising process. When the frame slides down, the roller and the surface of the column are pushed by a component force of the torsion spring, so that the roller is close to the surface of the column and drives the roller to rotate in the opposite direction, so that the first The rotation of the gear drives the rack to slide, and the sliding of the rack drives the brake block at the end to come into contact with the surface of the column, braking in real time. At the same time, the rack stops sliding, limiting the rotation of the first gear, so that the rotation of the roller is restricted, and the rolling contact between the roller and the column becomes frictional resistance, further improving the braking effect, providing sufficient braking buffer conditions for the chassis during the falling process, and combining with the elastic support of the elastic compression body to offset the downward kinetic energy of the chassis, avoiding damage to the buffer component when the chassis is overloaded or the kinetic energy of the downward fall is too large, ensuring the normal operation of the buffer function, and protecting the safety of equipment and personnel.

[0028] In a preferred embodiment of the present invention, the frame includes a crossbeam and a sliding sleeve, the sliding sleeve is slidingly mounted on the surface of the column, the sliding sleeve is arranged in a one-to-one correspondence with the column, the sliding sleeve is fixed to the end of the crossbeam, and the slot is opened on the surface of the crossbeam.

[0029] In a preferred embodiment of the present invention, a plurality of the braking mechanisms are provided, each of the braking mechanisms is arranged one-to-one corresponding to the sliding sleeve, a guide groove is opened at the end of the crossbeam, the rack is slidably arranged in the guide groove, and a second gear is coaxially fixed to the roller, and the second gear is meshed with the first gear.

[0030] When the frame rises and docks with the bottom of the descending chassis, there is a large impact force, which will not only damage the equipment, but also cause certain harm to the personnel inside the chassis. For this reason, the following is a specific implementation plan of the mechanical linkage structure of the construction elevator according to this application with reference to the accompanying drawings:

[0031] In a preferred embodiment of the present invention, one side of the contact plate is hinged to the frame by a hinge, and a damping roller in contact with the bottom of the chassis is rotatably installed on the other side of the contact plate. The contact plate is tilted, a damper is installed at the bottom of the contact plate, and a shock-absorbing spring is provided on the outer sleeve.

[0032] The contact plate is installed at an angle so that the inclined high end contacts the end of the chassis first, and the impact force is offset by pressing down on the contact during the rotation of the contact plate around the hinge. The damage to the bottom of the chassis at the moment of impact is reduced by adding a damping roller to roll with the bottom of the chassis. At the same time, a roller body with a damping structure is used to overcome resistance and consume kinetic energy during the rolling contact between the damping roller and the bottom of the chassis, thereby further reducing the impact force. The damper installed at the bottom of the contact plate cooperates with the shock-absorbing spring to serve as the main bearing structure for the impact of the chassis, which is used to absorb the impact kinetic energy, effectively alleviate the power at the moment of impact, and offset the impact force when the frame rises and the bottom of the chassis descends, thereby reducing damage to the equipment and injury to personnel inside the chassis.

[0033] In the case of long-term non-use, in order to ensure that the structure is in an effective state, trigger verification is required. For this purpose, in a preferred embodiment of the present invention, a pusher for pushing the limit slider is installed on the surface of the base, a speed sensor is installed on the surface of the chassis, and the elastic force of the elastic compression body is not greater than the gravity of the chassis;

[0034] The limit slider is driven by the pusher to slide, so that the card assembly is unlocked and the frame moves up. The speed sensor is used to monitor whether the frame movement is normal during the process. The frame is pressed down to a locked state by moving the chassis down to facilitate emergency use when the chassis falls. The installed speed sensor is not only used to detect whether the frame is normal, but also to monitor whether the operating speed of the chassis is normal. If the chassis runs too fast, the limit slider will be directly driven by the pusher to unlock without triggering the unlocking of the card assembly, thereby realizing the anti-fall protection function and improving safety performance.

[0035] In a preferred embodiment of the present invention, the pusher includes a cam and a driver, the cam is rotatably mounted on one side of the limit slider, and the driver is used to drive the cam to rotate; the driver is a stepper motor, and the drive shaft of the stepper motor is fixed to the cam.

[0036] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 It is a schematic diagram of the three-dimensional structure of the mechanical linkage structure of the construction elevator provided in the embodiment of the present application;

[0039] Figure 2 A schematic diagram of the three-dimensional structure of a speed limiter provided in an embodiment of the present application;

[0040] Figure 3 A schematic diagram of the structure of a buffer assembly provided in an embodiment of the present application;

[0041] Figure 4 A schematic diagram of the three-dimensional structure of a clamping assembly provided in an embodiment of the present application;

[0042] Figure 5 A schematic diagram of the three-dimensional structure of the installation position of the steel wire rope provided in the embodiment of the present application;

[0043] Figure 6 A schematic diagram of the three-dimensional structure of the brake mechanism provided in the embodiment of the present application;

[0044] Figure 7 A schematic diagram of a three-dimensional structure of a framework provided in an embodiment of the present application;

[0045] Figure 8 A schematic diagram of a three-dimensional structure of a first gear meshing with a second gear provided in an embodiment of the present application;

[0046] Fig. 9 A schematic diagram of a side view structure provided for an embodiment of the present application;

[0047] Fig.10 This is a schematic diagram of a three-dimensional structure of a base portion provided in an embodiment of the present application.

[0048] In the figure: 100, shaft mounting frame; 110, base; 111, limit groove; 130, top seat; 150, column; 170, chassis; 180, pusher; 181, cam; 182, driver; 190, lifting mechanism; 191, reduction motor; 192, driving wheel; 193, pulley; 194, counterweight; 300, speed limiter; 310, speed limiting pulley; 330, driving pulley; 350, pressure rope; 370, wheel seat; 371, limit block; 500, buffer assembly; 510, tube body; 530, rod body; 55 0, elastic compression body; 570, frame; 571, slot; 573, beam; 575, sleeve; 580, contact plate; 581, hinge; 582, damping roller; 583, damper; 584, shock-absorbing spring; 700, clamping assembly; 710, clamping block; 730, connecting rod; 750, limiting slider; 751, compression spring; 770, wire rope; 900, braking mechanism; 910, roller; 911, second gear; 930, first gear; 950, rack; 951, brake block; 970, connecting plate; 971, torsion spring. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme 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 part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0051] The mechanical linkage structure of a construction elevator according to an embodiment of the present application is described below with reference to the accompanying drawings;

[0052] like Figure 1-Figure 10 As shown, the mechanical linkage structure of the construction elevator according to the embodiment of the present application includes a shaft mounting frame 100, a speed limiter 300, a buffer assembly 500 and a clamping assembly 700;

[0053] The shaft mounting frame 100 includes a base 110, a top seat 130 and a column 150, wherein the lower end of the column 150 is fixed to the base 110, and the upper end of the column 150 is fixed to the top seat 130. A machine box 170 is arranged between the base 110 and the top seat 130, and a lifting mechanism 190 for driving the machine box 170 to be lifted and lowered is installed on the top seat 130;

[0054] The speed limiter 300 includes a speed limiting pulley 310, a transmission pulley 330 and a pressure rope 350. The speed limiting pulley 310 is rotatably mounted on the surface of the top seat 130. The base 110 is provided with a limiting groove 111. A wheel seat 370 is slidably inserted in the limiting groove 111. The transmission pulley 330 is rotatably mounted on the upper end of the wheel seat 370. The pressure rope 350 is transmission-sleeved on the speed limiting pulley 310 and the surface of the transmission pulley 330. A limiting block 371 is fixed at the lower end of the wheel seat 370. The limiting block 371 is slidably arranged in the limiting groove 111.

[0055] The buffer assembly 500 includes a tube body 510, a rod body 530 and an elastic compression body 550. The tube body 510 is fixed to the lower surface of the base 110. The lower end of the rod body 530 is slidably inserted in the tube body 510. A frame 570 is fixed to the upper end of the rod body 530. The frame 570 is slidably connected to the column 150. The elastic compression body 550 is arranged in the tube body 510. The frame 570 is installed with a contact plate 580 that is supported by the bottom of the chassis 170.

[0056] The clamping assembly 700 includes a clamping block 710, a connecting rod 730 and a limiting slider 750. The limiting slider 750 is slidably connected to the base 110. A compression spring 751 is connected between the limiting slider 750 and the base 110. One end of the connecting rod 730 is hinged to the limiting slider 750, and the other end of the connecting rod 730 is hinged to the clamping block 710. The frame 570 is provided with a clamping slot 571. The clamping block 710 is engaged with the clamping slot 571. A steel wire rope 770 is connected between the limiting slider 750 and the wheel seat 370.

[0057] According to the mechanical linkage structure of the construction elevator in the embodiment of the present application, the pressure rope 350 is sleeved between the speed limiting pulley 310 and the transmission pulley 330 to form a transmission wheel assembly, so that the wheel seat 370 is tightened. At this time, the limit block 371 abuts against the top of the limit groove 111, so that the wire rope 770 is tightened, and the compression spring 751 is compressed to a certain extent and has a certain elastic force. The clamping block 710 cooperates and is clamped in the clamping groove 571, so that the frame 570 is locked at the bottom of the shaft mounting frame 100. When the pressure rope 350 breaks, the upward pulling force of the wheel seat 370 disappears, and the balance of the compressed compression spring 751 is broken. The compression spring 751 pushes the limit slider 750 to slide, driving the connecting rod 730 to pull the card block 710 to separate from the card slot 571, and the locked frame 570 is unlocked. The elastic compression body 550 arranged in the tube body 510 pushes the rod body 530 to move upward, and the rod body 530 pushes the frame 570 at the upper end to move upward rapidly, and the resistance plate 580 installed through the frame 570 contacts the fallen chassis 170, receives the fallen chassis 170, and at the same time provides an upward supporting force to offset the kinetic energy of the fall. Through sufficient descending deceleration space, the chassis 170 can be effectively and slowly stopped to avoid damage caused by excessive impact force.

[0058] In addition, the mechanical linkage structure of the construction elevator according to the embodiment of the present application also has the following additional technical features:

[0059] Specifically, if Figure 1-Figure 3 As shown, in a specific embodiment of the present invention, the lifting mechanism 190 includes a reduction motor 191, a driving wheel 192, a pulley 193 and a counterweight 194. The driving wheel 192 is rotatably mounted on the surface of the top seat 130. The driving shaft of the reduction motor 191 is transmission-connected to the driving wheel 192. The pulley 193 is rotatably mounted on the top of the chassis 170. The counterweight 194 is slidably arranged in the vertical direction of the shaft mounting frame 100. A chain is fixed to the top seat 130. The chain passes through the pulley 193 and the driving wheel 192 in sequence and is fixedly connected to the counterweight 194.

[0060] In a specific embodiment of the present invention, the reduction motor 191 is fixedly connected to the top seat 130, a worm is coaxially fixed to the driving shaft of the reduction motor 191, a worm wheel is coaxially fixed to the driving wheel 192, the worm is meshed with the worm wheel, and an electromagnetic brake pad is also installed on the driving shaft of the reduction motor 191.

[0061] In a specific embodiment of the present invention, four columns 150 are provided, and the four columns 150 are arranged in parallel at the corners. The chassis 170 is arranged in a frame surrounded by the four columns 150. The shaft mounting frame 100 is fixed with a chassis slide rail, and the chassis slide rail is slidably connected to a chassis slider, and the chassis slider is fixedly connected to the side wall of the chassis 170.

[0062] In a specific embodiment of the present invention, a counterweight slide rail is fixed to the shaft mounting frame 100, and counterweight sliding blocks slidably connected to the counterweight slide rail are respectively fixed to both sides of the counterweight 194.

[0063] In a specific embodiment of the present invention, the elastic compression body 550 is a compressed spring or compressed gas, and a sensor for detecting the pressure at the bottom of the tube body 510 is installed inside the tube body 510 .

[0064] In a specific embodiment of the present invention, the pipe body 510 is a pre-buried pipe, and the pipe body 510 is arranged parallel to the column 150 .

[0065] Specifically, if Figure 4-Figure 5 As shown, in a specific embodiment of the present invention, two clamping blocks 710 are symmetrically arranged, and the two clamping blocks 710 are respectively hinged to the limiting slider 750 through correspondingly connected connecting rods 730.

[0066] In a specific embodiment of the present invention, hinge seats are respectively installed at both ends of the connecting rod 730, a limiting slide groove is opened on the surface of the base 110, the limiting slider 750 is slidably engaged in the limiting slide groove, one end of the compression spring 751 is fixedly connected to the inner wall of the limiting slide groove, the other end of the compression spring 751 is fixedly connected to the limiting slider 750, a guide groove is opened on the surface of the base 110, and the clamping block 710 is slidably engaged in the guide groove.

[0067] Specifically, if Fig.10 As shown, in a specific embodiment of the present invention, the rod body 530 slides through the through groove opened on the surface of the base 110, a through hole is opened between the limiting slide groove and the limiting groove 111, the wire rope 770 slides through the through hole, a guide wheel is installed in the limiting groove 111, and the surface of the wire rope 770 is arranged corresponding to the wheel groove of the guide wheel.

[0068] Only relying on the elastic force support of the elastic compression body 550 to offset the downward kinetic energy of the chassis, when the chassis is overloaded or the kinetic energy of falling downward is too large, the pressure on the buffer assembly 500 is too large, causing the buffer assembly 500 to be damaged, making the buffer ineffective. For this reason, the following is a specific implementation plan of the mechanical linkage structure of the construction elevator according to the present application with reference to the accompanying drawings:

[0069] Specifically, if Figure 6-Figure 8 As shown, in a specific embodiment of the present invention, a brake mechanism 900 is installed on the frame 570, and the brake mechanism 900 brakes the frame 570 during the sliding process;

[0070] The braking mechanism 900 includes a roller 910, a first gear 930 and a rack 950. The roller 910 is in transmission connection with the surface of the first gear 930. The first gear 930 is meshed with the rack 950. A brake block 951 is fixed to one end of the rack 950. One end of the brake block 951 is arranged corresponding to the surface of the column 150. The surface of the roller 910 is in rolling contact with the surface of the column 150.

[0071] The rack 950 is rotatably mounted on the surface of the frame 570 , and a connecting plate 970 is rotatably mounted on the frame 570 . One end of the connecting plate 970 is rotatably connected to the central axis of the roller 910 , and the other end of the connecting plate 970 is rotatably connected to the central axis of the first gear 930 . The connecting plate 970 is installed with a torsion spring 971 .

[0072] During the vertical ascent of the frame 570 along the shaft mounting frame 100, the roller 910 rolls in contact with the surface of the column 150, driving the first gear 930 to rotate, so that the first gear 930 rotates and pushes the rack 950 to slide. The rack 950 slides so that the brake block 951 at the end is away from the surface of the column 150. The torsion spring 971 pushes the connecting plate 970 to rotate around the axis of the first gear 930, so that the roller 910 elastically fits the surface of the column 150. During the ascent of the frame 570, the torsion spring 971 may be compressed so that the roller 910 and the column 150 touch and slide lightly to reduce the friction during the ascent. When the frame 570 slides down, the roller 910 and the surface of the column 150 are pushed by a component force of the torsion spring 971, so that the roller 910 is close to the column 150. The surface of the roller 910 is driven to rotate in the opposite direction, so that the first gear 930 rotates to drive the rack 950 to slide. The sliding of the rack 950 drives the brake block 951 at the end to contact the surface of the column 150, and brakes in real time. At the same time, the rack 950 no longer slides, which limits the rotation of the first gear 930, so that the rotation of the roller 910 is restricted. The rolling contact between the roller 910 and the column 150 becomes a frictional conflict, which further improves the braking effect, provides sufficient braking buffer conditions for the chassis 170 during the falling process, and combines the elastic support of the elastic compression body 550 to offset the downward kinetic energy of the chassis, avoiding damage to the buffer assembly 500 when the chassis is overloaded or the kinetic energy of the downward fall is too large, ensuring the normal operation of the buffer function and protecting the safety of equipment and personnel.

[0073] In a specific embodiment of the present invention, the frame 570 includes a crossbeam 573 and a sliding sleeve 575. The sliding sleeve 575 is slidably mounted on the surface of the column 150. The sliding sleeve 575 is arranged in a one-to-one correspondence with the column 150. The sliding sleeve 575 is fixed at the end of the crossbeam 573. The slot 571 is opened on the surface of the crossbeam 573.

[0074] In a specific embodiment of the present invention, a plurality of braking mechanisms 900 are provided, each of the braking mechanisms 900 is arranged one-to-one corresponding to the sliding sleeve 575, a guide groove is opened at the end of the crossbeam 573, the rack 950 is slidably set in the guide groove, and the roller 910 is coaxially fixed with a second gear 911, and the second gear 911 is meshed with the first gear 930.

[0075] When the frame 570 rises and docks with the bottom of the descending chassis 170, there is a large impact force, which will not only damage the equipment, but also cause certain harm to the personnel inside the chassis 170. For this reason, the following is a specific implementation plan of the mechanical linkage structure of the construction elevator according to the present application with reference to the accompanying drawings:

[0076] Specifically, if Figure 7-Figure 9 As shown, in a specific embodiment of the present invention, one side of the contact plate 580 is hinged to the frame 570 via a hinge 581, and the other side of the contact plate 580 is rotatably mounted with a damping roller 582 that contacts the bottom of the chassis 170, the contact plate 580 is tilted, a damper 583 is mounted at the bottom of the contact plate 580, and the outer sleeve is provided with a shock-absorbing spring 584.

[0077] The contact plate 580 is installed at an angle so that the inclined high end contacts the end of the chassis 170 first, and the impact force is offset by pressing the contact downward during the process of the contact plate 580 rotating around the hinge 581. The damage to the bottom of the chassis 170 at the moment of impact is reduced by adding a damping roller 582 to roll with the bottom of the chassis 170. At the same time, a roller body with a damping structure is used to overcome resistance and consume kinetic energy during the rolling contact between the damping roller 582 and the bottom of the chassis 170, thereby further reducing the impact force. The damper 583 installed at the bottom of the contact plate 580 cooperates with the shock-absorbing spring 584 to serve as the main bearing structure for the impact of the chassis 170, which is used to absorb the impact kinetic energy, effectively alleviate the power at the moment of impact, and offset the impact force when the frame 570 rises and docks with the bottom of the chassis 170, thereby reducing damage to the equipment and injury to personnel inside the chassis 170.

[0078] In order to ensure that the structure is in a valid state when it is not used for a long time, trigger verification needs to be performed. For this purpose, in the specific implementation of the present invention, specifically, Fig.10 As shown, a pusher 180 for pushing the limit slider 750 is installed on the surface of the base 110, a speed sensor is installed on the surface of the chassis 170, and the elastic force of the elastic compression body 550 is not greater than the gravity of the chassis 170;

[0079] The limit slider 750 is driven to slide by the pusher 180, so that the card assembly 700 is unlocked, the frame 570 moves up, and the speed sensor is used to monitor whether the frame 570 is in a normal state during the upward movement. The frame 570 is pressed down to a locked state by the chassis 170 to facilitate emergency use when the chassis 170 falls. The installed speed sensor is not only used to detect whether the frame 570 is normal, but also to monitor whether the running speed of the chassis 170 is normal. If the running speed of the chassis 170 is too fast, without triggering the unlocking of the card assembly 700, the limit slider 750 will be directly driven by the pusher 180 to unlock, thereby realizing the anti-fall protection function and improving safety performance.

[0080] In a specific embodiment of the present invention, the pusher 180 includes a cam 181 and a driver 182. The cam 181 is rotatably mounted on one side of the limiting slider 750, and the driver 182 is used to drive the cam 181 to rotate; the driver 182 is a stepper motor, and the driving shaft of the stepper motor is fixed to the cam 181.

[0081] The above description is only an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

Claims

1. A mechanical linkage structure of a construction hoist, characterized in that: include A shaft mounting frame (100), the shaft mounting frame (100) comprising a base (110), a top seat (130) and a column (150), the lower end of the column (150) being fixed to the base (110), the upper end of the column (150) being fixed to the top seat (130), a machine box (170) being arranged between the base (110) and the top seat (130), and the top seat (130) being provided with a lifting mechanism (190) for driving the machine box (170) to be lifted or lowered; A speed limiter (300), the speed limiter (300) comprising a speed limiting pulley (310), a driving pulley (330) and a pressure rope (350), the speed limiting pulley (310) being rotatably mounted on the surface of the top seat (130), the base (110) being provided with a limiting groove (111), a wheel seat (370) being slidably inserted into the limiting groove (111), the driving pulley (330) being rotatably mounted on the upper end of the wheel seat (370), the pressure rope (350) being transmission sleeved on the surfaces of the speed limiting pulley (310) and the driving pulley (330), a limiting block (371) being fixed at the lower end of the wheel seat (370), the limiting block (371) being slidably arranged in the limiting groove (111); A buffer assembly (500), the buffer assembly (500) comprising a tube body (510), a rod body (530) and an elastic compression body (550), the tube body (510) being fixed to the lower surface of the base (110), the lower end of the rod body (530) being slidably inserted into the tube body (510), a frame (570) being fixed to the upper end of the rod body (530), the frame (570) being slidably connected to the column (150), the elastic compression body (550) being arranged in the tube body (510), and the frame (570) being installed with a contact plate (580) receiving the bottom of the chassis (170); A clamping assembly (700), the clamping assembly (700) comprising a clamping block (710), a connecting rod (730) and a limiting slider (750), the limiting slider (750) being slidably connected to the base (110), a compression spring (751) being connected between the limiting slider (750) and the base (110), one end of the connecting rod (730) being hinged to the limiting slider (750), the other end of the connecting rod (730) being hinged to the clamping block (710), the frame (570) being provided with a clamping slot (571), the clamping block (710) being matched and clamped to the clamping slot (571), and a steel wire rope (770) being connected between the limiting slider (750) and the wheel seat (370).

2. The mechanical linkage structure of a construction elevator according to claim 1, characterized in that: The lifting mechanism (190) comprises a reduction motor (191), a driving wheel (192), a pulley (193) and a counterweight (194); the driving wheel (192) is rotatably mounted on the surface of the top seat (130); the driving shaft of the reduction motor (191) is transmission-connected to the driving wheel (192); the pulley (193) is rotatably mounted on the top of the chassis (170); the counterweight (194) is slidably arranged in the vertical direction of the shaft mounting frame (100); a chain is fixed to the top seat (130); the chain passes through the pulley (193) and the driving wheel (192) in sequence and is fixedly connected to the counterweight (194).

3. The mechanical linkage structure of a construction elevator according to claim 2, characterized in that: The reduction motor (191) is fixedly connected to the top seat (130); a worm is coaxially fixed to the driving shaft of the reduction motor (191); a worm wheel is coaxially fixed to the driving wheel (192); the worm is meshed with the worm wheel; and an electromagnetic brake pad is also installed on the driving shaft of the reduction motor (191).

4. The mechanical linkage structure of a construction elevator according to claim 1, characterized in that: Four upright posts (150) are provided, and the four upright posts (150) are arranged in parallel at the corners. The chassis (170) is arranged in a frame frame surrounded by the four upright posts (150). The shaft mounting frame (100) is fixed with a chassis slide rail, and the chassis slide rail is slidably connected to a chassis slider, and the chassis slider is fixedly connected to the side wall of the chassis (170).

5. The mechanical linkage structure of a construction elevator according to claim 2, characterized in that: The shaft mounting frame (100) is fixed with a counterweight slide rail, and counterweight sliding blocks slidably connected to the counterweight slide rail are respectively fixed on both sides of the counterweight (194).

6. The mechanical linkage structure of a construction elevator according to claim 1, characterized in that: The elastic compression body (550) is a compressed spring or compressed gas, and a sensor for detecting the pressure at the bottom of the tube body (510) is installed inside the tube body (510).

7. The mechanical linkage structure of a construction elevator according to claim 1, characterized in that: The pipe body (510) is a pre-buried pipe, and the pipe body (510) is arranged parallel to the column (150).

8. The mechanical linkage structure of a construction elevator according to claim 1, characterized in that: Two clamping blocks (710) are symmetrically arranged, and the two clamping blocks (710) are respectively hinged to the limiting sliding block (750) via correspondingly connected connecting rods (730).

9. The mechanical linkage structure of a construction elevator according to claim 1, characterized in that: Both ends of the connecting rod (730) are respectively provided with hinge seats, a limit slide groove is provided on the surface of the base (110), the limit slide block (750) is slidably engaged in the limit slide groove, one end of the compression spring (751) is fixedly connected to the inner wall of the limit slide groove, and the other end of the compression spring (751) is fixedly connected to the limit slide block (750), and a guide groove is provided on the surface of the base (110), and the clamping block (710) is slidably engaged in the guide groove.

10. The mechanical linkage structure of a construction elevator according to claim 9, characterized in that: The rod body (530) slides through a through groove provided on the surface of the base (110); a through hole is provided between the limiting sliding groove and the limiting groove (111); the steel wire rope (770) slides through the through hole; a guide wheel is installed in the limiting groove (111); and the surface of the steel wire rope (770) is arranged corresponding to the wheel groove of the guide wheel.

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