A safety protection device for vertical shaft hoist

Abstract

The present invention relates to the technical field of shaft hoists, and discloses a safety protection device for shaft hoists, including a hoist platform; a protection unit, the protection unit including a bracket installed on the hoist platform, and a column installed on the bracket; a flipping mechanism, the flipping mechanism is arranged on the column and contacts the steel rope of the hoist body, and the flipping mechanism performs a pulling action on the steel rope; a deceleration mechanism, the deceleration mechanism decelerates the steel rope to avoid damage when protecting the steel rope from falling. The present invention utilizes a flipping mechanism and a deceleration mechanism to ensure the safety of the steel rope of the hoist body. When the steel rope has a tendency to fall, the flipping mechanism quickly pulls the steel rope to avoid rapid falling and ensure the safety of the system. At the same time, the deceleration mechanism can steadily reduce the speed, disperse the impact force, and protect the physical structure of the steel rope. The cooperation of the two effectively solves the technical problem that the brake device is damaged due to rope overload and the rope loses restraint and slides.

Description

Technical Field

[0001] The present invention relates to the technical field of vertical shaft hoist, and more specifically, to a safety protection device for a vertical shaft hoist. Background Art

[0002] Shaft hoists play a vital role in many fields such as mining and underground engineering construction. They are mainly responsible for the vertical transportation of personnel and materials and are key equipment to ensure efficient connection between underground operations and the ground.

[0003] In vertical shaft hoisting operations, there is often the risk of overload. On the one hand, due to operator error, such as loading materials beyond the rated load of the hoist, the tension on the rope far exceeds its designed load-bearing capacity; on the other hand, under some special working conditions, such as unexpected situations such as a can stuck in the shaft, when the hoist tries to continue operating, the rope will suddenly be subjected to a huge additional tension, which can easily cause the rope to overload.

[0004] When the rope is overloaded, not only is its own structure susceptible to irreversible damage, such as a large number of internal steel wire breakages and rope core extrusion, but it will also have a huge impact on components such as the braking device connected to it, which may cause partial structural damage to the braking device and make it unable to perform its braking function normally, causing the rope to lose restraint and cause the rope to slip. Summary of the invention

[0005] The present invention provides a safety protection device for a vertical shaft hoist, which solves the technical problem in the related art that when a rope is overloaded, a great impact will be generated on components such as a braking device connected thereto, which may cause partial structural damage of the braking device and make it unable to perform the braking function normally, thereby causing the rope to lose restraint and cause the rope to slip.

[0006] The present invention provides a safety protection device for a vertical shaft hoist, comprising a hoist platform; a hoist body, the hoist body being mounted on the hoist platform; a protection unit, the protection unit comprising a bracket mounted on the hoist platform, and a column being mounted on the bracket; a flipping mechanism, the flipping mechanism being arranged on the column and in contact with a steel rope of the hoist body, the flipping mechanism performing a pulling action on the steel rope; and a deceleration mechanism, the deceleration mechanism decelerating the steel rope to avoid damage to the steel rope when protecting it from falling.

[0007] As a further optimization scheme of the present invention, the flipping mechanism includes a swing frame arranged on the column and a support seat installed on the column, a rotating shaft is installed on the support seat, and the rotating shaft and the swing frame are connected by a bearing, a first connecting shaft is symmetrically arranged on the swing frame, and a wheel is installed on the first connecting shaft.

[0008] As a further optimization scheme of the present invention, a chuck is installed on one group of the first connecting shafts, and a first gear is provided on the outside of the chuck, the first gear is connected to the swing frame bearing, a plurality of claws are rotatably connected to the chuck via a rotating shaft, a through groove for the chuck to rotate is provided in the first gear, and a plurality of groups of blocking teeth are distributed in a ring shape in the through groove.

[0009] As a further optimization solution of the present invention, a torsion spring is further provided between the clamping claw and the chuck, and a plurality of groups of protruding rods are further installed on the chuck, and the positions of the protruding rods and the clamping claws correspond one to one.

[0010] As a further optimization scheme of the present invention, the bearing on the swing frame is connected to a first shaft rod and a second shaft rod, a second gear is installed on the first shaft rod, the first gear and the second gear are meshingly connected, the first shaft rod and the second shaft rod are connected through a pulley transmission mechanism, a third gear is installed on the second shaft rod, and a fourth gear is meshingly connected to the third gear, and the fourth gear is installed on the rotating shaft.

[0011] As a further optimization scheme of the present invention, the deceleration mechanism includes a connecting frame installed on the column, and a connecting plate is installed on the connecting frame, a swing arm is rotatably connected to the connecting plate through a rotating shaft, and a second connecting shaft is connected to a bearing at one end of the swing arm close to the wheel disc, a roller is installed on the second connecting shaft, a first spring is installed at one end of the swing arm away from the roller, and an end of the first spring away from the swing arm is installed on the connecting plate, and a first limit column and a second limit column are also installed on the connecting plate.

[0012] As a further optimization scheme of the present invention, a limit groove is provided on the swing frame, and a limit rod is slidably connected in the limit groove, and traction frames are installed on both ends of the limit rod. A locking mechanism is provided on the traction frame, and the locking mechanism locks and fixes the decelerated steel rope, thereby protecting the steel rope from falling.

[0013] As a further optimization scheme of the present invention, the locking mechanism includes a fixed frame installed on the bracket, and side panels are symmetrically installed on the fixed frame, movable panels are symmetrically arranged between the side panels, a first clamping block is installed on the movable panel, and a second clamping block is slidably connected to the first clamping block, a first inclined block is installed on the side away from the movable panel, and a second inclined block is arranged on the first inclined block, and the second inclined block is fixedly connected to the traction frame.

[0014] As a further optimization solution of the present invention, a rope binding frame is provided between the side panels, and bayonet holes are symmetrically opened on the rope binding frame, and the positions of the movable plate and the bayonet holes are aligned.

[0015] As a further optimization solution of the present invention, a sliding groove is provided on the first clamping block, and a sliding block is slidably connected in the sliding groove, and a second spring is installed between the sliding block and the sliding groove.

[0016] The beneficial effects of the present invention are as follows: the present invention utilizes a flipping mechanism and a deceleration mechanism to ensure the safety of the steel rope of the hoist body; when the steel rope tends to fall, the flipping mechanism quickly pulls up the steel rope to avoid rapid falling, maintains its position stable to reduce the risk of collision and friction, and ensures the safety of the system; at the same time, the deceleration mechanism can steadily reduce the speed, disperse the impact force, and protect the physical structure of the steel rope; the cooperation of the two effectively solves the technical problem of damage to the braking device due to rope overload and loss of restraint and slipping of the rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the protection unit of the present invention;

[0019] Figure 3 It is a schematic diagram of a partial three-dimensional structure of a protection unit of the present invention;

[0020] Figure 4 The three-dimensional structure diagram of the flip mechanism of the present invention is shown in FIG. Figure 1 ;

[0021] Figure 5 The present invention Figure 4 A magnified view of the structure at center;

[0022] Figure 6 The three-dimensional structure diagram of the flip mechanism of the present invention is shown in FIG. Figure 2 ;

[0023] Figure 7 It is a schematic diagram of a partial three-dimensional structure of the speed reduction mechanism of the present invention;

[0024] Figure 8 It is a partial three-dimensional structural schematic diagram of the locking mechanism of the present invention;

[0025] Fig. 9 The present invention Figure 8 A magnified view of the structure at B in the middle;

[0026] Fig.10 It is a partial cross-sectional structural schematic diagram of the locking mechanism of the present invention.

[0027] In the figure: 100, hoist platform; 200, lifting channel; 300, hoist body; 400, protection unit; 410, bracket; 420, column; 430, reel; 440, flip mechanism; 441, swing frame; 442, support seat; 443, rotating shaft; 444, first connecting shaft; 445, wheel plate; 446, chuck; 447, first gear; 448, claw; 449, protruding rod; 4410, blocking tooth; 4411, first shaft rod; 4412, second gear; 4413, second shaft rod; 4414, pulley transmission mechanism; 4415, third gear; 4416, fourth gear; 450, speed reduction mechanism; 451, connecting frame; 452, connecting plate; 4 53. swing arm; 454. second connecting shaft; 455. roller; 456. first spring; 457. first limiting column; 458. second limiting column; 460. locking mechanism; 461. fixing frame; 462. side plate; 463. rope frame; 464. bayonet; 465. movable plate; 466. first clamping block; 467. second clamping block; 468. slide groove; 469. slider; 4610. second spring; 4611. first tilting block; 4612. second tilting block; 4613. guide column; 4614. third spring; 4615. limiting frame; 4616. pull rod; 4617. clamping plate; 4618. fourth spring; 470. limiting groove; 480. limiting rod; 490. traction frame. DETAILED DESCRIPTION

[0028] The subject matter described herein will now be discussed with reference to example implementations. It should be understood that the discussion of these implementations is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Various examples may omit, replace, or add various processes or components as needed. In addition, the features described in some examples may also be combined in other examples.

[0029] according to Figure 1 and Figure 2 As shown, a safety protection device for a vertical shaft hoist includes a hoist platform 100, on which a lifting channel 200 and a hoist body 300 are arranged. The device also includes a protection unit 400, which includes a bracket 410 mounted on the hoist platform 100, a column 420 mounted on the bracket 410, and a reel 430 rotatably connected to the bracket 410 through a bearing.

[0030] A flipping mechanism 440 and a deceleration mechanism 450 are provided on the column 420. The flipping mechanism 440 contacts the steel rope of the hoist body 300, and the flipping mechanism 440 performs a pulling action on the steel rope; the steel rope is decelerated by the deceleration mechanism 450 to avoid damage to the steel rope when protecting it from falling; wherein, a locking mechanism 460 is provided on the bracket 410, and the locking mechanism 460 locks and fixes the decelerated steel rope, so as to protect the steel rope from falling.

[0031] Specifically, the flipping mechanism 440 is in direct contact with the steel rope of the hoist body 300. When an abnormal situation occurs, such as when the steel rope has a tendency to fall, the flipping mechanism 440 can quickly and accurately perform a pulling action on the steel rope. Among them, by performing the pulling action, at the beginning of the unstable state of the steel rope, the pulling action can timely prevent the steel rope from sliding further downward, effectively curb the spread of the dangerous situation, and prevent the steel rope from falling rapidly due to instantaneous loss of control, thereby buying precious time for subsequent protective measures. In addition, the pulling action can keep the relative position of the steel rope as stable as possible, prevent it from violently colliding and rubbing with surrounding equipment or well walls, reduce the risk of damage or even breakage of the steel rope due to accidental collision, and ensure the integrity and safety of the entire lifting system.

[0032] Secondly, during the operation of the shaft hoist, the steel rope plays a key role in carrying heavy objects and ensuring the smooth progress of the hoisting operation. However, when encountering an emergency, such as a sudden power outage, overspeeding, or mechanical failure of the hoist causing abnormal hoisting process, the steel rope needs to be quickly and effectively braked for protection.

[0033] Most traditional protective devices use the method of directly clamping the steel rope to achieve braking. However, due to the huge clamping force applied instantly, the steel rope is very likely to produce serious local deformation, wear and even wire breakage at the stress point, which greatly reduces the service life of the steel rope and increases the cost and maintenance workload of subsequent steel rope replacement. In addition, once the steel rope breaks during the braking process, it will cause serious safety accidents, endangering the lives of underground personnel and the safety of equipment and facilities on the well.

[0034] In this embodiment, by setting up the deceleration mechanism 450, the falling speed of the steel rope can be gradually and smoothly reduced, so that the impact force on the steel rope is evenly dispersed, thereby protecting the physical structure of the steel rope from damage to the greatest extent, ensuring that the steel rope can still be put into normal use in the future even after experiencing such a dangerous situation, thereby reducing the increased cost caused by the frequent replacement of the steel rope due to damage to the steel rope and the impact on the progress of production operations.

[0035] according to Figures 3 to 6As shown, the flip mechanism 440 includes a swing frame 441 arranged on the column 420 and a support base 442 installed on the column 420, a rotating shaft 443 is installed on the support base 442, and the rotating shaft 443 is connected to the swing frame 441 through a bearing, a first connecting shaft 444 is symmetrically provided on the swing frame 441, and the first connecting shaft 444 is connected to the swing frame 441 by a bearing, and a wheel 445 is installed on the first connecting shaft 444.

[0036] Specifically, a chuck 446 is installed on one group of first connecting shafts 444, and a first gear 447 is provided on the outside of the chuck 446, and the first gear 447 is connected to the bearing of the swing frame 441, and a plurality of claws 448 are rotatably connected to the chuck 446 through a rotating shaft, and a torsion spring is also provided between the claw 448 and the chuck 446, one end of the torsion spring is fixedly connected to the claw 448, and the other end of the torsion spring is fixedly connected to the chuck 446, and a plurality of groups of protruding rods 449 are also installed on the chuck 446, and the positions of the protruding rods 449 and the claws 448 correspond one to one, a through groove for the rotation of the chuck 446 is opened in the first gear 447, and a plurality of groups of blocking teeth 4410 are distributed in a ring shape in the through groove.

[0037] It should be understood that, under normal conditions, due to the action of the torsion spring, the claw 448 is in a relatively retracted position and will not interfere with the blocking tooth 4410 in the first gear 447. The entire structure remains relatively still and does not affect the normal operation of the steel rope and the pulley 445, thereby ensuring the smooth operation of the vertical shaft hoist during routine operations.

[0038] However, when the steel rope moves rapidly due to unexpected circumstances, the situation changes. Under the action of centrifugal force, the chuck 446 throws the claw 448 outward, so that the claw 448 engages with the blocking tooth 4410, driving the first gear 447 to rotate, thereby effectively solving the problem of the need to initiate corresponding protective measures in a very short time in the vertical shaft hoisting operation once the steel rope falls rapidly or other emergency situations occur. This method of automatically triggering the engagement of the claw 448 with the blocking tooth 4410 by centrifugal force can quickly convert the abnormal movement state of the steel rope into subsequent mechanical transmission action without the need for additional complex external monitoring and manual intervention, greatly improving the response speed of the entire safety protection system.

[0039] Furthermore, the first shaft 4411 and the second shaft 4413 are connected to the bearing on the swing frame 441, the second gear 4412 is installed on the first shaft 4411, the first gear 447 and the second gear 4412 are meshed and connected, the first shaft 4411 and the second shaft 4413 are connected through a pulley transmission mechanism 4414, the third gear 4415 is installed on the second shaft 4413, and the third gear 4415 is meshed and connected with a fourth gear 4416, and the fourth gear 4416 is installed on the rotating shaft 443. Among them, the pulley transmission mechanism 4414 has a certain buffering and overload protection capability. When a momentary overload occurs in the entire transmission system, such as excessive impact force caused by abnormal movement of the steel rope, the belt can absorb part of the excess energy by slipping, etc., to avoid damage to components due to excessive force, thereby protecting the integrity of the entire transmission system and further improving the reliability of the flip mechanism 440 under complex working conditions.

[0040] It should be noted that when the steel rope moves quickly, the driving wheel 445 rotates synchronously and rapidly. Under the action of centrifugal force, the chuck 446 throws the claw 448 outward, so that the claw 448 engages with the blocking tooth 4410, driving the first gear 447 to rotate, and the first shaft rod 4411 is driven to rotate through the meshing connection between the first gear 447 and the second gear 4412. Under the action of the pulley transmission mechanism 4414, the second shaft rod 4413 rotates synchronously with the first shaft rod 4411, driving the third gear 4415 to rotate, and the third gear 4415 is meshed with the fourth gear 4416. When the fourth gear 4416 is in a fixed state, the third gear 4415 drives the swing frame 441 to rotate with the fourth gear 4416 as the center, thereby driving the swing frame 441 to swing.

[0041] according to Figure 7 As shown, the speed reduction mechanism 450 includes a connecting frame 451 installed on the column 420, and a connecting plate 452 is installed on the connecting frame 451, a swing arm 453 is rotatably connected to the connecting plate 452 through a rotating shaft, and a second connecting shaft 454 is connected to a bearing at one end of the swing arm 453 close to the wheel disc 445, and a roller 455 is installed on the second connecting shaft 454, and the roller 455 is made of rubber.

[0042] Among them, the rubber roller 455 has good elasticity and friction coefficient. Its elasticity can buffer the steel rope to a certain extent when it comes into contact with the steel rope, avoiding excessive impact force generated instantly due to hard contact. This buffering effect can effectively disperse the external force on the steel rope, and reduce the damage such as breakage and deformation of the steel rope caused by excessive local force.

[0043] At the same time, the moderate friction coefficient enables the roller 455 to provide resistance to the outer surface of the steel rope when in contact with the steel rope, thereby effectively controlling the speed of the steel rope and achieving the purpose of deceleration. During the vertical shaft hoisting process, once the steel rope falls abnormally, the excessively fast falling speed is one of the key factors leading to danger. The resistance generated by the roller 455 can steadily and reliably reduce the falling speed of the steel rope, preventing the steel rope from violently colliding with other equipment due to excessive speed or causing serious damage to itself due to emergency stop, thereby ensuring the safety of the entire hoisting system and the service life of the steel rope.

[0044] Furthermore, a first spring 456 is installed at one end of the swing arm 453 away from the roller 455, and one end of the first spring 456 away from the swing arm 453 is installed on the connecting plate 452. When the wheel 445 swings upward, the wheel 445 pushes the steel rope to contact the roller 455, thereby squeezing the swing arm 453 through the roller 455, so that the swing arm 453 rotates around the rotating shaft, and then stretches the first spring 456, so that the first spring 456 produces elastic deformation. During the deformation of the first spring 456, the first spring 456 provides a pulling force to the swing arm 453, and the pulling force of the first spring 456 cooperates with the friction between the roller 455 and the steel rope, so that the deceleration force on the steel rope is evenly distributed on its outer surface, avoiding the occurrence of local stress concentration, and minimizing the scratches, wear and other damages on the surface of the steel rope caused by the deceleration process.

[0045] Specifically, compared with some methods that simply rely on rigid structures for braking and deceleration, this deceleration method allows the steel rope to reduce its speed more smoothly during the deceleration process, which is more conducive to protecting the steel wire structure inside the steel rope and the external protective layer, ensuring that the steel rope can still maintain good performance after experiencing dangerous conditions and continue to be safely and reliably used in subsequent vertical shaft hoisting operations. It fundamentally reduces the high cost expenditure caused by frequent replacement of steel ropes due to steel rope damage and the impact on the continuity of production operations, and comprehensively improves the safety, stability and economy of vertical shaft hoist operation.

[0046] It should be noted that a first limiting column 457 is installed on the connecting plate 452. When the swing arm 453 swings downward, the first limiting column 457 limits the swing of the swing arm 453, thereby limiting the downward swing range of the swing arm 453 through the first limiting column 457; a second limiting column 458 is installed on the connecting plate 452. When the swing arm 453 swings upward under compression, the second limiting column 458 limits the swing of the swing arm 453, thereby limiting the upward swing range of the swing arm 453 through the second limiting column 458.

[0047] according to Figure 8As shown, the locking mechanism 460 includes a fixing frame 461 installed on the bracket 410, and side panels 462 are symmetrically installed on the fixing frame 461, a rope tying frame 463 is provided between the side panels 462, and the rope tying frame 463 is symmetrically provided with bayonet holes 464, and the rope tying frame 463 is provided with a movable groove for the steel rope to pass through. When the rope tying frame 463 is working, the steel rope passes through the movable groove, so that the steel rope is placed inside the rope tying frame 463 for guiding the steel rope.

[0048] It should be understood that by guiding the movable groove and placing the steel rope inside the rope tie frame 463, the steel rope can be prevented from swinging and deviating randomly during movement, preventing unnecessary friction and collision with other surrounding equipment components, reducing the risk of damage to the surface of the steel rope, and also allowing subsequent locking operations to act more accurately on the steel rope, thereby improving the accuracy and reliability of locking.

[0049] Specifically, according to Fig. 9 and Fig.10 As shown, a movable plate 465 is symmetrically provided between the side plates 462, and the movable plate 465 is aligned with the position of the bayonet 464, a first clamping block 466 is installed on the movable plate 465, and a second clamping block 467 is slidably connected to the first clamping block 466, and the contact surface between the first clamping block 466 and the second clamping block 467 is inclined; when the second clamping block 467 contacts both sides of the steel rope and the steel rope slides between the two groups of second clamping blocks 467, the second clamping block 467 moves along the inclined path of the first clamping block 466, thereby locking and clamping the steel rope.

[0050] Among them, the thickness and stress conditions of the steel rope may change under different working conditions. When the steel rope needs to be locked due to abnormal conditions, as the steel rope slides, the second clamping block 467 can automatically adjust its position according to the inclined contact surface between it and the first clamping block 466, and then fit tightly to the steel rope. Regardless of the specific size and state of the steel rope, reliable locking can be achieved, effectively avoiding locking failure caused by differences in steel rope specifications or irregular stress, greatly improving the adaptability of the locking mechanism 460 to different situations, and enhancing the versatility of the entire vertical shaft hoist safety protection system.

[0051] In addition, a slide groove 468 is provided on the first clamping block 466, and a slider 469 is slidably connected in the slide groove 468, a second spring 4610 is installed between the slider 469 and the slide groove 468, and the slider 469 is fixedly connected to the second clamping block 467; through the setting of the second spring 4610, when the steel rope is locked and fixed, the second spring 4610 is in a deformed state, and when the steel rope and the second clamping block 467 are released from contact, the second spring 4610 is reset to control the second clamping block 467 to move to the initial position of the second clamping block 467. At the same time, during the locking process, the deformation of the second spring 4610 can buffer the instantaneous impact force applied by the steel rope.

[0052] Furthermore, a sawtooth surface is provided on the side close to the second clamping block 467, and the sawtooth surface is inclined, and when the two sawtooth surfaces are in contact, they are arranged in a shape of being wide at the top and narrow at the bottom. When the steel rope needs to be locked, as the second clamping block 467 moves, the sawtooth surfaces bite each other, and due to its inclination and the shape of being wide at the top and narrow at the bottom, the closer it bites into the steel rope, the tighter it bites, so that once the steel rope is locked, it is difficult to accidentally slip off due to external force, which greatly improves the reliability of locking.

[0053] It should be noted that a limiting groove 470 is provided on the swing frame 441, and a limiting rod 480 is slidably connected in the limiting groove 470, and a traction frame 490 is installed at both ends of the limiting rod 480; when the swing frame 441 rotates, the traction frame 490 is lifted upward through the limiting groove 470 and the limiting rod 480. A first tilting block 4611 is installed on the side away from the movable plate 465, and a second tilting block 4612 is provided on the first tilting block 4611, and the inclined surfaces of the first tilting block 4611 and the second tilting block 4612 are in contact with each other, and the second tilting block 4612 is fixedly connected to the traction frame 490. When the traction frame 490 lifts the second inclined block 4612 upward, the second inclined block 4612 squeezes the first inclined block 4611, so that the first inclined block 4611 moves along the inclined path, thereby squeezing the movable plate 465, so that the two groups of movable plates 465 are close to each other, thereby driving the second clamping block 467 and the steel rope to fit together, so as to lock and fix the steel rope.

[0054] In other embodiments, a sliding sleeve for limiting the upward and downward sliding movement of the traction frame 490 may be installed on the side plate 462 , thereby ensuring that the traction frame 490 remains stable when moving up and down.

[0055] It should be noted that a guide column 4613 is slidably connected inside the movable plate 465, and the movement of the movable plate 465 is limited by the guide column 4613, so that the movement of the movable plate 465 is more stable, and a third spring 4614 is provided on the guide column 4613; when the movable plate 465 moves on the guide column 4613, the third spring 4614 is squeezed or stretched, so that the third spring 4614 produces elastic deformation, thereby having a restoring force; when the squeezing or stretching of the movable plate 465 is released, the third spring 4614 assists the movable plate 465 to return to its initial state; one end of the third spring 4614 is fixedly connected to the side plate 462, and the other end of the third spring 4614 is fixedly connected to the movable plate 465.

[0056] according to Figure 8 As shown, a limit frame 4615 is installed on the side away from the side plate 462, and a pull rod 4616 is slidably connected to the limit frame 4615, and a clamping plate 4617 is installed on the pull rod 4616, and the clamping plate 4617 is in contact with the outer wall of the traction frame 490. When the traction frame 490 pulls the second inclined block 4612 upward, the clamping plate 4617 can be inserted into the bottom space of the traction frame 490 to block the downward movement path of the traction frame 490, so that the traction frame 490 cannot move downward, thereby fixing the movable plate 465, which is convenient for locking and fixing the steel rope.

[0057] A slot matching the card plate 4617 is provided on the side plate 462, and a fourth spring 4618 is provided on the pull rod 4616, and one end of the fourth spring 4618 is installed on the limit frame 4615, and the other end of the fourth spring 4618 is installed on the pull rod 4616. When the equipment returns to normal and the locking structure needs to be released, the staff pulls the pull rod 4616 outward to compress the fourth spring 4618 to produce elastic deformation, thereby releasing the limit of the card plate 4617 and the traction frame 490 and restoring the normal operation of the equipment.

[0058] An example of the present specific implementation mode is described above, but the present embodiment is not limited to the above-mentioned specific implementation mode, which is merely illustrative and not restrictive. A person skilled in the art may make many forms inspired by the present embodiment, all of which are protected by the present embodiment.

Claims

1. A safety protection device for a vertical shaft hoist, characterized in that: include: Hoist platform (100); A hoist body (300), wherein the hoist body (300) is installed on the hoist platform (100); A protection unit (400), the protection unit (400) comprising a bracket (410) mounted on the elevator platform (100), and a column (420) mounted on the bracket (410); A turnover mechanism (440), the turnover mechanism (440) being arranged on the column (420) and in contact with the steel rope of the hoist body (300), the turnover mechanism (440) performing a lifting action on the steel rope; The turning mechanism (440) comprises a swing frame (441) provided on the column (420) and a support seat (442) installed on the column (420); a rotating shaft (443) is installed on the support seat (442); the rotating shaft (443) and the swing frame (441) are connected via a bearing; a first connecting shaft (444) is symmetrically provided on the swing frame (441); and a wheel disc (445) is installed on the first connecting shaft (444); A chuck (446) is mounted on one of the first connecting shafts (444), and a first gear (447) is disposed outside the chuck (446), the first gear (447) is connected to a bearing of a swing frame (441), a plurality of claws (448) are rotatably connected to the chuck (446) via a rotating shaft, a through slot for the chuck (446) to rotate is provided in the first gear (447), and a plurality of groups of blocking teeth (4410) are distributed in an annular shape in the through slot; A deceleration mechanism (450), wherein the deceleration mechanism (450) decelerates the steel rope to avoid damage to the steel rope when it falls; The speed reduction mechanism (450) comprises a connecting frame (451) mounted on a column (420), and a connecting plate (452) is mounted on the connecting frame (451), a swing arm (453) is rotatably connected to the connecting plate (452) via a rotating shaft, and an end of the swing arm (453) close to the wheel disc (445) is bearing-connected to a second connecting shaft (454), a roller (455) is mounted on the second connecting shaft (454), a first spring (456) is mounted on an end of the swing arm (453) away from the roller (455), and an end of the first spring (456) away from the swing arm (453) is mounted on the connecting plate (452), and a first limiting column (457) and a second limiting column (458) are also mounted on the connecting plate (452); The swing frame (441) is provided with a limit slot (470), and a limit rod (480) is slidably connected in the limit slot (470). Both ends of the limit rod (480) are mounted with a traction frame (490). The traction frame (490) is provided with a locking mechanism (460). The locking mechanism (460) locks and fixes the decelerated steel rope, thereby protecting the steel rope from falling.

2. A safety protection device for a vertical shaft hoist according to claim 1, characterized in that: A torsion spring is also provided between the clamping claw (448) and the chuck (446), and a plurality of groups of protruding rods (449) are also installed on the chuck (446), and the positions of the protruding rods (449) and the clamping claws (448) correspond one to one.

3. A safety protection device for a vertical shaft hoist according to claim 1, characterized in that: The swing frame (441) is connected to a first shaft (4411) and a second shaft (4413) by a bearing, the first shaft (4411) is mounted with a second gear (4412), the first gear (447) and the second gear (4412) are meshingly connected, the first shaft (4411) and the second shaft (4413) are connected via a pulley transmission mechanism (4414), the second shaft (4413) is mounted with a third gear (4415), the third gear (4415) is meshingly connected with a fourth gear (4416), and the fourth gear (4416) is mounted on the rotating shaft (443).

4. A safety protection device for a vertical shaft hoist according to claim 1, characterized in that: The locking mechanism (460) comprises a fixing frame (461) mounted on the bracket (410), and side plates (462) are symmetrically mounted on the fixing frame (461), and movable plates (465) are symmetrically arranged between the side plates (462), and a first clamping block (466) is mounted on the movable plate (465), and a second clamping block (467) is slidably connected to the first clamping block (466), and a first tilting block (4611) is mounted on the side away from the movable plate (465), and a second tilting block (4612) is arranged on the first tilting block (4611), and the second tilting block (4612) is fixedly connected to the traction frame (490).

5. A safety protection device for a vertical shaft hoist according to claim 4, characterized in that: A rope binding frame (463) is provided between the side plates (462), and a bayonet (464) is symmetrically provided on the rope binding frame (463), and the movable plate (465) is aligned with the bayonet (464).

6. A safety protection device for a vertical shaft hoist according to claim 4, characterized in that: The first clamping block (466) is provided with a sliding groove (468), and a sliding block (469) is slidably connected in the sliding groove (468), and a second spring (4610) is installed between the sliding block (469) and the sliding groove (468).

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