A kind of anti-falling mechanism and lifting transport equipment

Abstract

The application discloses a kind of anti-falling mechanism and lifting transport equipment, and the anti-falling mechanism includes conveying platform, connecting rod mechanism, elastic mechanism, limit switch and self-locking mechanism, conveying platform is installed on lifting belt, connecting rod mechanism includes first connecting rod, second connecting rod and two rocker arms, first connecting rod and second connecting rod both ends are rotatably connected by rocker arm, elastic mechanism is arranged between conveying platform and lifting belt, one end of elastic mechanism is connected with first connecting rod, the other end of elastic mechanism is compressed by lifting belt, limit switch is arranged on second connecting rod, self-locking mechanism is arranged on conveying platform, self-locking mechanism can lock and fix conveying platform on the rack of lifting transport equipment, when lifting belt works, elastic mechanism is compressed, self-locking mechanism is in unlocked state, when lifting belt breaks, elastic mechanism resets and drives first connecting rod to move, first connecting rod drives second connecting rod to make limit switch retract, self-locking mechanism locks conveying platform, so as to prevent conveying platform from falling and damaging, improve safety.

Description

Technical Field

[0001] The present invention relates to the technical field of lifting and transporting equipment, and in particular to an anti-falling mechanism and lifting and transporting equipment. Background Art

[0002] Currently, most lifting and transportation equipment on the market, such as hoists, elevators, stackers, and lifts, utilize synchronous belts, chains, electric hoists, and other mechanisms for lifting. However, during transportation, due to damage or aging of the equipment, and in some cases where the lifting height is very high, the material frame can easily fall due to broken synchronous belts or chains or electrical failure, causing damage to the frame and even posing a serious threat to the safety of workers. Summary of the Invention

[0003] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art and to provide an anti-falling mechanism.

[0004] The present invention also provides a lifting and transportation device including the anti-falling mechanism of the first embodiment.

[0005] According to a first aspect embodiment of the present invention, an anti-fall mechanism is provided, which is applied to a lifting and transporting equipment, including: a conveying platform, a connecting rod mechanism, an elastic mechanism, a limit switch and a self-locking mechanism. The conveying platform is installed on the lifting belt of the lifting and transporting equipment, the connecting rod mechanism includes a first connecting rod, a second connecting rod and two rocking arms, the first connecting rod and the second connecting rod are rotatably connected at both ends by the two rocking arms, the elastic mechanism is arranged between the conveying platform and the lifting belt, one end of the elastic mechanism is connected to the first connecting rod, and the other end of the elastic mechanism is pressed by the lifting belt, the limit switch is arranged on the second connecting rod, and the self-locking mechanism is arranged on the conveying platform, the self-locking mechanism can lock and fix the conveying platform to the frame of the lifting and transporting equipment, when the lifting belt is working, the elastic mechanism is compressed, the limit switch is extended, and the self-locking mechanism is in an unlocked state, when the lifting belt is broken, the elastic mechanism is reset to drive the first connecting rod to move, the first connecting rod drives the second connecting rod to retract the limit switch, and the self-locking mechanism locks and fixes the conveying platform.

[0006] Beneficial effect: This anti-fall mechanism, when the lifting belt is working normally, the elastic mechanism is pressed by the lifting belt, and the self-locking mechanism is in an unlocked state. When the lifting belt breaks, the pressure on the elastic mechanism disappears, and the elastic mechanism is reset under the action of the elastic force, thereby driving the first connecting rod to move, and the first connecting rod drives the second connecting rod to move through the rocker, so that the limit switch retracts, and the self-locking mechanism locks the conveying platform to the frame of the lifting and transporting equipment, thereby preventing the conveying platform from falling and being damaged, and improving safety.

[0007] According to the anti-fall mechanism described in the embodiment of the first aspect of the present invention, the elastic mechanism includes at least one connecting rod, a top plate and a first spring, the connecting rod passes through both ends of the conveying platform, one end of the connecting rod is connected to the first connecting rod, the first spring is installed on the connecting rod, and the first spring is located between the top plate and the end face of the conveying platform, one side of the top plate is installed on the other end of the connecting rod, and the lifting belt presses the other side of the top plate.

[0008] According to the anti-fall mechanism described in the embodiment of the first aspect of the present invention, the self-locking mechanism includes a first inclined block, a second inclined block and a driving assembly, the execution end of the driving assembly is connected to the first inclined block, the second inclined block is arranged opposite to the inclined surface of the first inclined block, and the driving assembly is used to drive the first inclined block to slide relative to the second inclined block.

[0009] According to the anti-fall mechanism described in the embodiment of the first aspect of the present invention, the self-locking mechanism also includes a fixed seat, the driving assembly includes a second spring, the fixed seat is installed on the conveying platform, the fixed seat is provided with a vertical first through hole, the first through hole is set through the top of the fixed seat, the second spring is located in the first through hole, and the two ends of the second spring are respectively in contact with the bottom end of the first inclined block and the bottom wall of the first through hole.

[0010] According to the anti-fall mechanism described in the embodiment of the first aspect of the present invention, the drive assembly also includes a top column, the fixed seat is provided with a first through hole and a second through hole arranged coaxially and vertically, the diameter of the first through hole is larger than the diameter of the second through hole, the second through hole is arranged through the bottom end of the fixed seat, the top column passes through the first through hole and the second through hole, the second spring is installed on the top column, and the first inclined block abuts against the top column.

[0011] According to the anti-fall mechanism described in the embodiment of the first aspect of the present invention, the top column includes a first rod segment and a second rod segment, the diameter of the first rod segment is larger than the diameter of the second rod segment, the top end of the second spring contacts the bottom end of the first rod segment, and the top end of the first rod segment abuts the first inclined block.

[0012] According to the anti-fall mechanism described in the embodiment of the first aspect of the present invention, the self-locking mechanism also includes a limit block for preventing the top column from moving upward, and the limit block is installed on the top column and is located below the fixing seat.

[0013] According to the anti-fall mechanism described in the embodiment of the first aspect of the present invention, the self-locking mechanism also includes a slider and a slide groove, the slider can slide along the slide groove, the direction of the slide groove is parallel to the inclined surface of the first inclined block, and the slider and the slide groove are arranged on the top surfaces of the first inclined block and the second inclined block.

[0014] According to a second aspect of the present invention, a lifting and transporting device is provided, which is characterized in that it includes: a frame, a pulley assembly, a power piece and the anti-fall mechanism described in the first aspect, the pulley assembly includes a lifting belt, a driving wheel and a driven wheel, the driving wheel and the driven wheel are installed through both ends of the frame, the lifting belt is wrapped around the driving wheel and the driven wheel, the power piece is installed on the frame, the output end of the power piece is connected to the driving wheel, and the anti-fall mechanism is installed on the lifting belt.

[0015] Beneficial effect: This lifting and transporting equipment adopts the anti-falling mechanism of the first embodiment. When the lifting belt breaks, the conveying platform can be locked and fixed to prevent falling, thereby improving the safety performance of the lifting and transporting equipment.

[0016] According to the lifting and transporting equipment described in the embodiment of the second aspect of the present invention, the lifting and transporting equipment further includes a guide structure, which is arranged on the conveying platform and is located on both sides of the frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0018] Figure 1 This is a schematic diagram of one side of the self-locking mechanism of the anti-fall mechanism according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the interior of the self-locking machine of the anti-fall mechanism according to an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of one side of the connecting rod mechanism of the anti-fall mechanism according to an embodiment of the present invention;

[0021] Figure 4 This is a side view of the anti-fall mechanism according to an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of a lifting and transporting device according to an embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the lifting and transporting equipment according to an embodiment of the present invention without the frame.

[0024] Anti-fall mechanism 10;

[0025] Conveying platform 100;

[0026] Linkage mechanism 200, first link 210, second link 220, first rocker 231, second rocker 232, intermediate link 240;

[0027] Elastic mechanism 300, connecting rod 310, top plate 320, first spring 330;

[0028] Limit switch 400;

[0029] Self-locking mechanism 500, first inclined block 510, anti-slip structure 511, second inclined block 520, fixing seat 530, top column 541, second spring 542, slider 550, and slide groove 560;

[0030] Frame 20, base 21, top seat 22, guide rail 23;

[0031] Pulley assembly 30, lifting belt 31, driving pulley 32, driven pulley 33;

[0032] Power member 40;

[0033] Guide structure 50. DETAILED DESCRIPTION

[0034] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it should not be understood as a limitation on the scope of protection of the present invention.

[0035] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0036] In the description of the present invention, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0037] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0038] Reference Figures 1 to 4 , an anti-fall mechanism, used in lifting and transportation equipment, includes: a conveying platform 100, a connecting rod mechanism 200, an elastic mechanism 300, a limit switch 400 and a self-locking mechanism 500.

[0039] The conveying platform 100 is mounted on the lifting belt of the lifting and transporting equipment. The linkage mechanism 200 includes a first link 210, a second link 220, and two rockers. The first and second links 210 and 220 are rotatably connected at both ends by the two rockers. An elastic mechanism 300 is positioned between the conveying platform 100 and the lifting belt. One end of the elastic mechanism 300 is connected to the first link 210, and the other end is compressed by the lifting belt. A limit switch 400 is positioned on the second link 220. A self-locking mechanism 500 is provided on the conveying platform 100 and can lock the conveying platform 100 to the frame of the lifting and transporting equipment.

[0040] Reference Figure 3 and Figure 4 Specifically, the rocker is divided into a first rocker 231 and a second rocker 232. The first connecting rod 210, the second connecting rod 220, the first rocker 231, and the second rocker 232 form a parallelogram structure. The first connecting rod 210 and the second connecting rod 220 are arranged in parallel, and the first rocker 231 and the second rocker 232 are arranged in parallel. The ends of the first rocker 231 are rotatably connected to the first connecting rod 210 and the second connecting rod 220 via a rotating shaft, and the ends of the second rocker 232 are rotatably connected to the first connecting rod 210 and the second connecting rod via a rotating shaft.

[0041] The first connecting rod 210 is arranged along the length direction of the frame, and the elastic mechanism 300 can drive the first connecting rod 210 to move horizontally along the width direction of the frame. The movement of the first connecting rod 210 drives the two ends of the second connecting rod 220 to move in the opposite direction of the first connecting rod 210 through the first rocker 231 and the second rocker 232, thereby ultimately realizing the control of the limit switch 400.

[0042] When the lifting belt is working, the elastic mechanism 300 is in a compressed state, the limit switch 400 extends to block the self-locking mechanism 500, and the self-locking mechanism 500 is in an unlocked state. When the lifting belt breaks, the elastic mechanism 300 resets and drives the first connecting rod 210 to move. The first connecting rod 210 drives the second connecting rod 220 to retract the limit switch 400, and the self-locking mechanism 500 locks and fixes the conveying platform 100, thereby preventing the conveying platform 100 from falling and improving safety.

[0043] The conveying platform 100 includes a vertical portion and a horizontal portion that are perpendicular to each other, the vertical portion is fixed to the lifting belt, and the horizontal portion is used to place the material frame. Of course, the horizontal portion can also be provided with a horizontally arranged electric conveying roller.

[0044] Reference Figure 3 and Figure 4The elastic mechanism 300 includes at least one connecting rod 310, a top plate 320, and a first spring 330. The self-locking mechanism 500 and the connecting rod mechanism 200 are respectively located on two opposite sides of the conveying platform 100. The connecting rod 310 passes through both ends of the conveying platform 100. One end of the connecting rod 310 is connected to the first connecting rod 210. The first spring 330 is installed on the connecting rod 310. The first spring 330 is located between the top plate 320 and the end surface of the conveying platform 100. One side of the top plate 320 is installed on the other end of the connecting rod 310, and the lifting belt presses the other side of the top plate 320.

[0045] A groove is provided at the top of the conveying platform 100, with the opening of the groove facing the side of the lifting belt. The elastic mechanism 300 can be installed in the groove, and the spring is installed between the top plate 320 and the bottom plate of the groove, so that the spring returns to push the top plate 320, so that the top plate 320 drives the first connecting rod 210 to move. Since the lifting belt needs to support the elastic mechanism 300 at this point and the lifting belt needs to be able to move upward, the groove for installing the elastic mechanism 300 allows the lifting belt to pass normally and meets the condition that the lifting belt presses the elastic mechanism 300.

[0046] Specifically, there are two connecting rods 310, which pass through the bottom plate of the groove and are connected to the first connecting rod 210. The part of the connecting rod 310 located in the groove is fitted with the first spring 330, and the top plate 320 is installed on the top of the two connecting rods 310. On the one hand, it can support the first spring 330, and at the same time facilitate the lifting of the belt tightening elastic mechanism 300.

[0047] The first connecting rod 210 is similar in shape to the groove. The first connecting rod 210 includes a main plate and side plates located on both sides of the main plate. The side plates are rotatably connected to the first rocker 231 and the second rocker 232 . The main plate is connected to the connecting rod 310 .

[0048] Reference Figure 3 and Figure 4 The connecting rod mechanism 200 further includes an intermediate connecting rod 240, which is disposed between the first connecting rod 210 and the second connecting rod 220. The intermediate connecting rod 240 has two ends that are rotatably connected to the rocker arm. The intermediate connecting rod 240 is groove-shaped and can enhance the stability of the connecting rod mechanism 200.

[0049] Reference Figure 1 and Figure 2The self-locking mechanism 500 includes a first inclined block 510, a second inclined block 520, and a drive assembly. The execution end of the drive assembly is connected to the first inclined block 510, and the second inclined block 520 is arranged opposite to the inclined surface of the first inclined block 510. The drive assembly is used to drive the first inclined block 510 to slide relative to the second inclined block 520. The second inclined block 520 can be fixedly mounted on the conveying platform, and the second inclined block 520 and the first inclined block 510 form a square block as a whole. The length of the bottom side of the first inclined block 510 must be greater than or equal to the distance between the first inclined block 510 and the frame, so as to ensure that the first inclined block 510 can be locked on the frame.

[0050] Reference Figure 1 and Figure 2 The self-locking mechanism further includes a fixed seat 530, and the driving assembly includes a second spring 542. The fixed seat 530 is mounted on the conveying platform 100. The fixed seat 530 is provided with a vertical first through-hole. The first through-hole is provided through the top of the fixed seat 530. The second spring 542 is located in the first through-hole, and the two ends of the second spring 542 respectively contact the bottom end of the first inclined block 510 and the bottom wall of the first through-hole. Specifically, the first through-hole can be a square hole or a circular hole that passes through the top of the fixed seat 530. The depth of the first through-hole is less than the height of the fixed seat 530, so that the bottom surface of the second spring 542 can abut against the wall surface of the bottom wall of the first through-hole. The top of the second spring 542 contacts the bottom surface of the first inclined block 510, so that the fixed seat 530, the second spring 542 and the first inclined block 510 form an elastic system. The movement of the first inclined block 510 is achieved through the expansion and contraction of the second spring 542. Furthermore, in the initial state, the second spring 542 is compressed and, due to the action of the limit switch 400, is in an energy-storing state. When the limit switch is withdrawn, the second spring 542 resets, driving the first inclined block 510 upward, thereby locking the first inclined block 510 against the frame. Furthermore, this solution directly utilizes the second spring 542 as the power element, resulting in a simple structure and low cost.

[0051] It is easy to understand that the length of the second spring 542 in the initial state is greater than the depth of the first through hole, and the second spring 542 can only be compressed to a state flush with the depth of the first through hole. Therefore, the difference between the length of the second spring in the initial state and the depth of the first through hole is approximately the distance moved by the first inclined block 510. The specific parameters of the second spring 542 can be selected according to actual needs.

[0052] In some of the embodiments, reference Figure 1 and Figure 2The drive assembly includes a top post 541 and a second spring 542. The fixed base 530 is provided with a first through hole and a second through hole arranged coaxially and vertically. The diameter of the first through hole is larger than that of the second through hole. The first through hole is located on the side close to the first inclined block 510, that is, the first through hole passes through the top of the fixed base 530, and the second through hole passes through the bottom of the fixed base 530. The first through hole and the second through hole form a T-shaped through hole with a larger top and a smaller bottom. On the one hand, it facilitates the bottom contact of the second spring 542. On the other hand, it allows the top post 541 to pass through the first and second through holes, so that the top post 541 can move up and down along the axis of the first and second through holes. The second spring 542 is located between the bottom end of the first inclined block 510 and the wall surface of the bottom wall of the first through hole. The top end of the second spring 542 abuts the bottom of the first inclined block 510. The second spring 542 is mounted on the top post 541, and the first inclined block 510 abuts the top post 541. The first inclined block 510 and the top column 541 can be clamped and fixed, the top end of the second spring 542 is fixed by the bottom surface of the first inclined block 510, and the bottom end of the second spring 542 contacts the wall surface of the bottom wall of the first through hole, so that the second spring 542 can be compressed by the first inclined block 510, but at this time the initial length of the second spring 542 is designed to be greater than the length of the first through hole.

[0053] When the lifting belt is working properly, the second spring 542 is in a compressed state. When the lifting belt breaks, the link mechanism 200 drives the limit switch 400 to retract, and the top of the first inclined block 510 is no longer blocked by the limit switch 400. Since the second spring 542 is in a compressed state, the first inclined block 510 has a tendency to move upward, thereby achieving self-locking of the first inclined block 510.

[0054] Reference Figure 1 The fixing seat 530 includes a bottom and a side, and the bottom and the side are arranged in an L shape. The bottom is provided with a first through hole and a second through hole arranged coaxially, and the top column 541 passes through the first through hole and the second through hole. The shapes of the first through hole and the second through hole can be designed according to actual needs.

[0055] In some embodiments, the top column 541 includes a first rod segment and a second rod segment. The diameter of the first rod segment is larger than the diameter of the second rod segment. The first rod segment is located above the second rod segment. The second spring 542 is mounted on the second rod segment, and the top end of the second spring 542 contacts the bottom end of the first rod segment. The top end of the first rod segment abuts the first bevel 510, and the bottom end of the second spring 542 contacts the wall surface of the bottom wall of the first through hole. At this time, the two ends of the second spring 542 are limited by the bottom end of the first rod segment and the wall surface of the bottom wall of the first through hole. The initial length of the second spring 542 does not need to be greater than the length of the first through hole. The first rod segment is similar to an end cap, which can ensure that the second spring 542 is completely located in the first through hole, ensuring the performance of the second spring. Of course, the first rod segment can also be detachably mounted on the top end of the second rod segment.

[0056] In some embodiments, the self-locking mechanism further includes a stopper mounted on the top post 541, located below the fixing base 530. The stopper prevents the top post 541 from moving upward. Specifically, the stopper can be circular or square in shape and can be removably mounted on the top post 541. The maximum surface length of the stopper is greater than the diameter of the second through hole, thereby preventing the stopper from passing through the second through hole and restricting the upward movement of the top post 541.

[0057] When the lifting belt is working normally, there is a certain distance d between the limit block and the bottom of the fixed seat 530. When the lifting belt breaks, the top column 541 moves upward, thereby driving the limit block to move upward. The distance moved by the top column is the initial distance d between the limit block and the bottom of the fixed seat 530. In order to ensure that the anti-fall mechanism can be locked, the initial distance d between the limit block and the bottom of the fixed seat 530 needs to be set to the distance moved by the first inclined block 510.

[0058] The limit block can limit the movement of the top column 541. By setting the distance between the limit block and the bottom of the fixed seat 530 in the initial state, the movement distance of the first inclined block 510 is guaranteed, the locking effect of the anti-fall mechanism is guaranteed, and the first inclined block 510 is prevented from moving too long, causing wear on the frame. The limit block also makes it easier to control the movement distance of the first inclined block 510.

[0059] The limiting block can move along the second rod section of the top column, thereby adjusting the upward movement distance of the first inclined block 510. The limiting block can be a nut, which has a simple structure and is easy to install.

[0060] Specifically, in one embodiment, the top column 541 includes a threaded section, an intermediate optical axis section, and a head section, and the limiting member is a nut. The head section abuts against the first bevel block 510, and the diameter of the head section is larger than the diameter of the second spring 542. The second spring 542 is mounted on the intermediate optical axis section, and the two ends of the second spring 542 contact the head section and the bottom wall of the first through hole. The head section abuts against the first bevel block 510, and the threaded section is located at the bottom end of the intermediate optical axis section. The threaded section is provided with external threads, and the threaded section extends out of the second through hole. The nut is threadedly connected to the threaded section. The top column 541 can compress the second spring 542, and then the nut can be tightened upward to fix the top column 541, thereby facilitating the installation of the first bevel block 510 and the second bevel block 520. The nut can also serve as a limiting member to adjust the distance that the first bevel block 510 moves upward, thereby adjusting the locking force of the first bevel block 510 on the frame.

[0061] This anti-fall mechanism achieves locking of the first inclined block 510 by adopting the cooperation between the top column 541 and the second spring 542 . The spring has a relatively sensitive response and can quickly achieve self-locking.

[0062] It is easy to understand that the driving component can also be a structure such as a lifting cylinder, a linear motor, etc. The switch of the driving component is set to a limit switch 400. The limit switch 400 is driven by the connecting rod mechanism 200 to make the lifting cylinder and the linear motor work, thereby driving the first inclined block 510 to slide relative to the second inclined block 520, and finally achieving locking.

[0063] The limit switch 400 is a limit rod. One end of the limit rod is connected to the second connecting rod 220, and the other end extends through the conveying platform 100 to prevent the first inclined block 510 from moving upward. The conveying platform 100 is provided with a through hole located above the first inclined block 510. In the initial state, one end of the limit rod extends through the through hole and prevents the first inclined block 510 from moving upward. The other end of the limit rod is connected to the second connecting rod 220. When the limit rod extends from the through hole, it blocks the movement of the first inclined block 510, while when it retracts from the through hole, it locks the position.

[0064] In some embodiments, a side of the first inclined block 510 close to the frame is provided with an anti-slip structure 511. Specifically, the anti-slip structure 511 can ensure a more stable locking effect between the first inclined block 510 and the frame, preventing the first inclined block 510 from slipping and the frame, thereby preventing the anti-fall failure.

[0065] The anti-slip structure 511 can be made of spring rubber. The anti-slip structure 511 can be made of detachable spring rubber blocks, which are arranged at intervals on the side of the first oblique block 510 close to the frame. By setting multiple spring rubber blocks, the anti-slip structure 511 has a better effect.

[0066] Reference Figure 1As can be easily understood, the self-locking mechanism further includes a slider 550 and a slide groove 560. The slider 550 can slide along the slide groove 560. The direction of the slide groove 560 is parallel to the inclined surface of the first inclined block 510. The slider 550 and the slide groove 560 are arranged on the top surfaces of the first inclined block 510 and the second inclined block 520. By setting the slider 550 and the slide groove 560, the first inclined block 510 can be made more stable when locked in motion. Specifically, the slider 550 is a folding plate, including a first plate and a second plate perpendicular to each other. The first plate is fixed to the second inclined block 520 by screws. The slide groove 560 is arranged on the first inclined block 510. The second plate cooperates with the slide groove 560, and the second plate can slide in the slide groove 560. Of course, the slide groove 560 can also be arranged on the second inclined block 520, and the slider 550 can be installed on the first inclined block 510.

[0067] Reference Figure 5 and Figure 6 A lifting and transporting device includes: a frame 20, a pulley assembly 30, a power member 40, and the anti-fall mechanism 10 described in the first embodiment. The pulley assembly 30 includes a lifting belt 31, a driving pulley 32, and a driven pulley 33. The driving pulley 32 and the driven pulley 33 are mounted at both ends of the frame 20. The lifting belt 31 is wound around the driving pulley 32 and the driven pulley 33. The power member 40 is mounted on the frame 20, and the output end of the power member 40 is connected to the driving pulley 32. The anti-fall mechanism 10 is mounted on the lifting belt 31.

[0068] Specifically, the lifting and transporting equipment can be a hoist, an elevator, a stacker, etc. In this embodiment, the lifting and transporting equipment is a hoist.

[0069] The frame 20 includes a base 21, a top seat 22, and a guide rail portion 23. The guide rail portion 23 is located between the base 21 and the top seat 22. The driving wheel 32 is mounted on the base 21, the driven wheel 33 is mounted on the top seat 22, and the power member 40 is mounted on the base 21. The power member 40 and the driving wheel 32 can be connected via a reducer and a rotating shaft. The guide rail portion 23 extends in the vertical height direction. The conveying platform 100 is driven to rise and fall by the lifting belt 31. The self-locking mechanism 500 is located on both sides of the guide rail portion 23. When the lifting belt 31 breaks, the self-locking mechanism 500 works, and the first inclined block 510 slides upward to the inside and contacts and locks with the guide rail portion 23, thereby fixing the conveying platform 100 on the guide rail portion 23, preventing the conveying platform 100 from falling after the lifting belt 31 breaks, thereby improving the safety of the elevator.

[0070] Specifically, the power element 40 is a motor, the lifting belt 31 is a synchronous belt, and the driving pulley 32 and the driven pulley 33 are synchronous pulleys. The conveying platform 100 and the synchronous belt are fixed together by a fixing plate. One side of the fixing plate is provided with teeth that mesh with the synchronous belt. The fixing plate is fixed to the conveying platform 100 with screws. The synchronous belt is clamped between the fixing plate and the conveying platform 100, and the synchronous belt and the fixing plate are meshed.

[0071] Reference Figure 5 In some embodiments, the elevator further includes a guide structure 50 disposed on the conveying platform 100 and located on both sides of the frame 20. As will be readily understood, the guide structures 50 are disposed on both sides of the side of the conveying platform 100 secured to the synchronous belt via a fixing plate. The guide structures 50 guide the guide rail portion 23 of the frame 20, preventing the conveying platform 100 from shaking during lifting. Specifically, the guide structures 50 may be implemented as guide rollers, elastic plates, or cylindrical rollers.

[0072] In this embodiment, the guide structure 50 utilizes guide rollers. The guide rollers are removably mounted on the conveyor platform via guide shafts. Rolling friction between the guide rollers and the frame 20 minimizes damage, and installation and removal are convenient. The specific number of guide rollers can be adjusted based on actual needs and is not limited here. The figure shows four pairs of guide rollers.

[0073] When the elevator is operating normally, the actuator end of the power element 40 drives the driving wheel 32 to rotate, thereby driving the lifting belt 31 to move. The lifting belt 31 then drives the conveyor platform to move. At this time, the lifting belt 31 is in a tensioned state, pressing the elastic mechanism 300. If the lifting belt 31 breaks or is damaged, the lifting belt 31 is no longer tensioned, and the pressure on the elastic mechanism 300 disappears. The elastic mechanism 300 needs to reset, thereby driving the first connecting rod 210 to move laterally. The elastic mechanism 300, as the sensing part of the lifting belt 31, can react quickly and provide corresponding feedback. After the first connecting rod 210 moves laterally, it drives the first rocker arm 231 and the second rocker arm 232 connected thereto to swing, thereby driving the second connecting rod 220 to move laterally in the opposite direction of the movement of the first connecting rod 210, and finally pulling out the limit rod. After the limit rod is pulled out, the top of the first inclined block 510 is unobstructed, and the second spring changes from a compressed state to its original state, thereby pushing the first inclined block 510 upward, so that the first inclined block 510 can finally lock the conveying platform 100, realize the anti-fall function, and improve the safety of the elevator.

[0074] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the scope of the present invention.

Claims

1. An anti-fall mechanism, used on lifting and transporting equipment, characterized in that: include: A conveying platform is installed on the lifting belt of the lifting and transporting equipment; A connecting rod mechanism includes a first connecting rod, a second connecting rod and two rocking rods, wherein both ends of the first connecting rod and the second connecting rod are rotatably connected through the two rocking rods; an elastic mechanism, disposed between the conveying platform and the lifting belt, wherein one end of the elastic mechanism is connected to the first connecting rod, and the other end of the elastic mechanism is pressed by the lifting belt; a limit switch, disposed on the second connecting rod; A self-locking mechanism is provided on the conveying platform, and the self-locking mechanism can lock and fix the conveying platform on the frame of the lifting and transporting equipment; When the lifting belt is working, the elastic mechanism is compressed, the limit switch is extended, and the self-locking mechanism is in an unlocked state. When the lifting belt is broken, the elastic mechanism is reset to drive the first connecting rod to move, and the first connecting rod drives the second connecting rod to retract the limit switch, and the self-locking mechanism locks and fixes the conveying platform.

2. The anti-fall mechanism according to claim 1, characterized in that: The elastic mechanism includes at least one connecting rod, a top plate and a first spring. The connecting rod passes through both ends of the conveying platform. One end of the connecting rod is connected to the first connecting rod. The first spring is installed on the connecting rod, and the first spring is located between the top plate and the end face of the conveying platform. One side of the top plate is installed on the other end of the connecting rod, and the lifting belt presses the other side of the top plate.

3. The anti-fall mechanism according to claim 1, characterized in that: The self-locking mechanism includes a first inclined block, a second inclined block and a driving assembly, the execution end of the driving assembly is connected to the first inclined block, the second inclined block is arranged opposite to the inclined surface of the first inclined block, and the driving assembly is used to drive the first inclined block to slide relative to the second inclined block.

4. The anti-fall mechanism according to claim 3, characterized in that: The self-locking mechanism also includes a fixed seat, the driving assembly includes a second spring, the fixed seat is installed on the conveying platform, the fixed seat is provided with a vertical first through hole, the first through hole is set through the top of the fixed seat, the second spring is located in the first through hole, and the two ends of the second spring are respectively in contact with the bottom end of the first inclined block and the bottom wall of the first through hole.

5. The anti-fall mechanism according to claim 4, characterized in that: The driving assembly also includes a top column, and the fixing seat is provided with a first through hole and a second through hole arranged coaxially and vertically, the diameter of the first through hole is larger than the diameter of the second through hole, the second through hole is set through the bottom end of the fixing seat, the top column passes through the first through hole and the second through hole, the second spring is installed on the top column, and the first inclined block abuts against the top column.

6. The anti-fall mechanism according to claim 5, characterized in that: The top column includes a first rod segment and a second rod segment, the diameter of the first rod segment is larger than the diameter of the second rod segment, the top end of the second spring contacts the bottom end of the first rod segment, and the top end of the first rod segment abuts against the first inclined block.

7. The anti-fall mechanism according to claim 5 or 6, characterized in that: The self-locking mechanism further includes a limit block for preventing the top column from moving upward, wherein the limit block is mounted on the top column and is located below the fixing seat.

8. The anti-fall mechanism according to claim 3, characterized in that: The self-locking mechanism further includes a slider and a slide groove, wherein the slider can slide along the slide groove, the slide groove direction is parallel to the inclined surface of the first inclined block, and the slider and the slide groove are arranged on the top surfaces of the first inclined block and the second inclined block.

9. A lifting and transporting device, characterized in that: include: frame; A pulley assembly includes a lifting belt, a driving wheel, and a driven wheel, wherein the driving wheel and the driven wheel are installed at both ends of the frame, and the lifting belt is wound around the driving wheel and the driven wheel; A power member is mounted on the frame, and an output end of the power member is connected to the driving wheel; as well as The anti-fall mechanism according to any one of claims 1 to 8, wherein the anti-fall mechanism is mounted on the lifting belt.

10. The lifting and transporting equipment according to claim 9, characterized in that: The lifting and transporting equipment further comprises a guide structure, which is arranged on the conveying platform and is located on both sides of the frame.

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