Light and small lifting loop chain type electric hoist

Abstract

The invention discloses a light and small lifting loop chain type electric hoist, and relates to the technical field of electric hoists, the light and small lifting loop chain type electric hoist comprises a motor, the outer wall of the motor is fixedly connected with a small electric cabinet, the outer wall of the motor is respectively provided with a speed reducer device and an electric cabinet, the bottom of the motor is provided with a chain storage box, and the top end of the chain storage box is fixedly connected with a chain guide device; an electric trolley is fixedly connected to the top end of the chain guide device, a chain wheel is rotatably connected to the interior of the chain guide device, a chain is arranged in the chain storage box, and the chain is connected with the chain wheel in a meshed mode. And the alloy steel chain wheel improves the surface hardness of the chain wheel and the surface hardness of the chain, so that the chain wheel and the chain are in meshing transmission and are wear-resistant, the chain biting phenomenon is not easy to occur, and the service life of the chain is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of electric hoists, in particular to a light and small-sized lifting ring chain type electric hoist. Background Art

[0002] Electric hoists are a type of special lifting equipment that is widely used in industrial and mining enterprises, warehouses, docks and other places. Their characteristics include small size, light weight, simple operation and convenient use. Electric hoists are mainly divided into two types: wire rope electric hoists and chain electric hoists. Among them, chain electric hoists are a light and small lifting equipment, mainly composed of an electric motor, a transmission mechanism and a sprocket.

[0003] The chain drive of the chain hoist is a key component to ensure the quality and safety of the chain hoist, while the sprocket in the prior art is a cast steel part. The material of this cast steel sprocket is not stable enough, and it is difficult to ensure the surface hardness after heat treatment. After a long period of use, the size of the sprocket socket becomes larger, causing chain jamming and chain climbing during sprocket and chain transmission. At the same time, the structural principle of the limit device in the sprocket and chain transmission is unreasonable, and the limit is unreliable. Especially in the environment of strong salt spray corrosion in the port, the two compression springs in the spring sleeve on the limiter in the limit device are prone to rust, and the limit rod is too long, easy to bend and rust, resulting in the limit device being easily stuck, thereby causing the limit device to fail. For this reason, the present invention proposes a light and small lifting chain electric hoist. Summary of the invention

[0004] The purpose of the present invention is to make up for the deficiencies of the prior art and to provide a light and small lifting chain electric hoist.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a light and small lifting ring chain electric hoist comprises a motor, an outer wall of the motor is fixedly connected to a small electric control box, the outer wall of the motor is respectively provided with a reducer device and an electric control box, a chain storage box is provided at the bottom of the motor, and a chain guide device is fixedly connected to the top of the chain storage box, an electric trolley is fixedly connected to the top of the chain guide device, a sprocket is rotatably connected to the inside of the chain guide device, a chain is provided inside the chain storage box, and the chain is meshed with the sprocket, a hook device is fixedly connected to the bottom end of the chain, a limit device is provided on the outer wall of the chain, and the limit device is located at the top of the hook device, a chain tail stop device is fixedly connected to the end of the chain away from the hook device, a side connecting plate is fixedly connected to the outer wall of the chain guide device, and two pairs of mounting hanging plates are threadedly connected to the outer wall of the side connecting plate, a buffer cleaning mechanism and an auxiliary buffer mechanism are respectively provided between the opposite sides of a pair of mounting hanging plates, and the chain is located between the pair of buffer cleaning mechanisms.

[0006] As a preferred scheme of the present invention, the limit device is composed of an upper limit bumper, a limit switch mounting plate, an upper limit switch, a lower limit switch and a lower limit bumper, one end of the upper limit bumper and the lower limit bumper are both fixedly connected to the outer wall of the chain, the outer wall of the chain is sleeved with a pair of limit compression springs, one end of the limit compression spring on one side is fixedly connected to the top of the hook device, and the other end of the limit compression spring is fixedly connected to one end of the upper limit bumper, one end of the limit compression spring on the other side is fixedly connected to one end of the lower limit bumper, and the other end of the limit compression spring is fixedly connected to the outer wall of the chain tail stop device, the upper limit switch and the lower limit switch are both installed on one end of the limit switch mounting plate, the upper limit switch is located at the top of the upper limit bumper, and the lower limit switch is located at the top of the lower limit bumper.

[0007] As a preferred scheme of the present invention, the reducer device is composed of a housing, an input shaft, an input shaft cover, a friction plate, a clutch plate, a gear shaft, a gear, an oil seal sleeve, a housing cover, an output shaft and a disc spring. One end of the housing is fixedly connected to the outer wall of the motor, the input shaft is rotatably connected to the inner wall of the housing through a bearing, and one end of the input shaft is fixedly connected to the output end of the motor, the disc spring is fixedly connected between the input shaft and the outer wall of the bearing, the input shaft cover and the clutch plate are both sleeved on the outer wall of the input shaft, the friction plate is fixedly connected to the inner wall of the housing, and the friction plate is in contact with the clutch plate, multiple gear shafts are rotatably connected to the inner wall of the housing through bearings, and the gears are sleeved on the outer walls of the gear shafts, the oil seal sleeve is fixedly connected to one end of the housing, and the housing cover is fixedly connected to the other end of the housing, the output shaft is rotatably connected to the inner wall of the housing through a bearing, and one end of the output shaft is fixedly connected to one end of the sprocket.

[0008] As a preferred solution of the present invention, the chain guide device is composed of a left chain guide seat, a chain guide plate, a right chain guide seat, a chain splitter plate and a chain guide positioning sleeve. The left chain guide seat and the right chain guide seat are connected by a chain guide positioning sleeve. The chain guide plate and the chain splitter plate are both located between the left chain guide seat and the right chain guide seat, and the sprocket is located between the chain guide plate and the chain splitter plate.

[0009] As a preferred scheme of the present invention, a pair of the buffer cleaning mechanisms each include a pair of U-shaped plates, a plurality of flexible rollers are rotatably connected inside the pair of U-shaped plates, a liquid storage frame is fixedly connected between opposite sides of a pair of mounting hangers, and a pair of telescopic rods are fixedly connected between one end of the liquid storage frame and one end of the U-shaped plate, a movable rod is fixedly connected to one end of the U-shaped plate, a circular hole is drilled at one end of the liquid storage frame, and the end of the movable rod away from the U-shaped plate passes through the circular hole and extends into the liquid storage frame, a buffer spring is sleeved on the outer wall of the movable rod, one end of the buffer spring is fixedly connected to one end of the U-shaped plate, and the other end of the buffer spring is fixedly connected to one end of the liquid storage frame.

[0010] As a preferred solution of the present invention, a cleaning brush body is fixedly connected between opposite sides of a pair of mounting hangers, and the cleaning brush body is in contact with the chain, a connecting plate is fixedly connected to the adjacent ends of a pair of U-shaped plates, and a pair of collision balls are fixedly connected to the inner wall of the connecting plate, and the outer walls of the two pairs of collision balls are in contact with one end of the cleaning brush body.

[0011] As a preferred solution of the present invention, the tops of the two pairs of liquid storage frames are both provided with liquid injection ports, the tops of the liquid injection ports are sleeved with sealing plugs, and the outer wall of the sealing plug is in close contact with the inner wall of the liquid injection port.

[0012] As a preferred solution of the present invention, a pair of the auxiliary buffer mechanisms each include a pair of circular plates, the top ends of the pair of circular plates are respectively threadedly connected to the top ends of a pair of liquid storage frames, the bottom ends of the pair of circular plates are fixedly connected to sealing round blocks, the top ends of the pair of liquid storage frames are opened with circular openings, and the inner walls of the circular openings are in close contact with the outer walls of the sealing round blocks, the bottom ends of the sealing round blocks are fixedly connected to round rods, and the bottom ends of the round rods are fixedly connected to film frames, a multi-microporous reaction ball is placed inside the film frame, one end of the movable rod away from the U-shaped plate is fixedly connected to a sealing plate, and the sealing plate is in close contact with the inner wall of the liquid storage frame, a carbon dioxide aqueous solution is provided between the liquid storage frame and the sealing plate, and the film frame is located on the top of the carbon dioxide aqueous solution, one end of the sealing plate is fixedly connected to a cutting knife, and the cutting knife is located on one side of the film frame.

[0013] Compared with the prior art, this light and small lifting chain electric hoist has the following beneficial effects:

[0014] 1. The present invention ensures that the chain and sprocket will not fall off or climb during their service life through unique sprocket design and manufacturing. The alloy steel sprocket is provided to increase the surface hardness of the sprocket and the surface hardness of the chain, making the meshing transmission of the sprocket and the chain wear-resistant and less prone to chain biting, thereby extending the service life of the chain.

[0015] 2. The present invention provides a limit device, and when the hook device rises to the limit position, the upper limit bumper hits the spring sleeve. Due to the buffering effect of the limit compression spring, the upper limit bumper directly hits the limit switch, thereby achieving the upper limit purpose; when the hook device descends to the limit position, the lower limit switch hits the spring sleeve, so that the upper plane of the spring sleeve directly hits the lower limit bumper, thereby achieving the lower limit purpose, and the limit is reliable and stable.

[0016] 3. The buffer cleaning mechanism and the auxiliary buffer mechanism provided in the present invention can drive a pair of cleaning brushes to clean the surface of the lifting chain, reduce the adhesion of dust, and thus reduce the friction loss when the chain is meshing with the sprocket. At the same time, when the chain and the objects are affected by external force or sudden start and stop, when the chain and the objects are deflected, the buffering effect of the buffer spring is combined with the fountain impact effect produced by the mixture of the multi-porous reaction ball and the carbon dioxide aqueous solution to offset and buffer the swinging force, thereby reducing the collision friction between the chain and the chain guide device in the swinging state, reducing the loss of the chain and extending the service life of the chain.

[0017] Other advantages, objectives and features of the present invention will be set forth in part in the following description and, in part, will be apparent to those skilled in the art based on an examination of the following or may be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 For the present invention Figure 1 Schematic diagram of the local split structure in ;

[0020] Figure 3 It is a schematic diagram of a partial three-dimensional structure of the present invention;

[0021] Figure 4 It is a structural schematic diagram of the limiting device in the present invention;

[0022] Figure 5 For the present invention Figure 4 Schematic diagram of the cross-section structure in ;

[0023] Figure 6 It is a structural schematic diagram of the reducer device in the present invention;

[0024] Figure 7 It is a schematic structural diagram of the chain guide device in the present invention;

[0025] Figure 8 For the present invention Figure 7 Schematic diagram of the structure of the middle sprocket and the left chain guide seat;

[0026] Fig. 9 It is a three-dimensional structural schematic diagram of the buffer cleaning mechanism and the auxiliary buffer mechanism in the present invention;

[0027] Fig.10 It is a schematic diagram of the partial split structure of the buffer cleaning mechanism in the present invention;

[0028] Fig.11 For the present invention Fig.10 The enlarged structural diagram at A in the middle;

[0029] Fig.12 It is a schematic diagram of the partial cross-section structure of the auxiliary buffer mechanism in the present invention.

[0030] In the figure: 1. motor; 2. small electric control box; 3. electric trolley; 4. chain storage box; 5. electric control box; 6. hook device; 7. chain; 8. limit compression spring; 9. limit device; 901. upper limit bumper; 902. limit switch mounting plate; 903. upper limit switch; 904. lower limit switch; 905. lower limit bumper; 10. reducer device; 1001. box body; 1002. input shaft; 1003. input shaft plug cover; 1004. friction plate; 1005. clutch plate; 1006. gear shaft; 1007. gear; 1008. oil seal sleeve; 1009. box cover; 10010. output shaft; 10011. disc spring; 11. sprocket; 12. chain guide device; 1201. left chain guide seat; 1202. chain guide plate; 1203, right chain guide seat; 1204, chain dividing plate; 1205, chain guide positioning sleeve; 13, chain tail stop device; 14, side connecting plate; 15, installation hanging plate; 16, buffer cleaning mechanism; 1601, U-shaped plate; 1602, flexible roller; 1603, liquid storage frame; 16031, liquid filling port; 16032, sealing plug; 1604, telescopic rod; 1605, movable rod; 1606, buffer spring; 1607, connecting plate; 1608, collision ball; 1609, cleaning brush body; 17, auxiliary buffer mechanism; 1701, round plate; 1702, sealing round block; 1703, round rod; 1704, film frame; 1705, multi-microporous reaction ball; 1706, carbon dioxide aqueous solution; 1707, sealing plate; 1708, cutting knife. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] like Figure 1-Figure 12As shown, the present invention provides a technical solution: a light and small lifting chain electric hoist, including a motor 1, a small electric control box 2 is fixedly connected to the outer wall of the motor 1, a reducer device 10 and an electric control box 5 are respectively provided on the outer wall of the motor 1, a chain storage box 4 is provided at the bottom of the motor 1, and a chain guide device 12 is fixedly connected to the top of the chain storage box 4, an electric trolley 3 is fixedly connected to the top of the chain guide device 12, a sprocket 11 is rotatably connected to the inside of the chain guide device 12, a chain 7 is provided inside the chain storage box 4, and the chain 7 is meshed and connected with the sprocket 11 The bottom end of the chain 7 is fixedly connected to a hook device 6, a limit device 9 is provided on the outer wall of the chain 7, and the limit device 9 is located at the top of the hook device 6, the end of the chain 7 away from the hook device 6 is fixedly connected to a chain tail stop device 13, the outer wall of the chain guide device 12 is fixedly connected to a side connecting plate 14, and the outer wall of the side connecting plate 14 is threadedly connected to two pairs of mounting hanging plates 15, a buffer cleaning mechanism 16 and an auxiliary buffer mechanism 17 are respectively provided between the opposite sides of a pair of mounting hanging plates 15, and the chain 7 is located between the pair of buffer cleaning mechanisms 16.

[0033] According to the overall structure of the device, the items are first hung on the hook device 6, and then the motor 1 cooperates with the reducer device 10 to drive the sprocket 11 in the chain guide device 12 to rotate slowly, so that the chain 7 can rise stably, and the dust on the surface of the chain 7 is cleaned by the buffer cleaning mechanism 16 to reduce the friction loss when the chain 7 and the sprocket 11 are engaged. Then, when it rises to the extreme position, it is fixed by the limit device 9 to maintain stability. Next, the electric trolley 3 drives the suspended items to move horizontally. During the movement, when the chain 7 and the items swing due to sudden start and stop or external force, the buffer cleaning mechanism 16 cooperates with the auxiliary buffer mechanism 17 to buffer the swing of the chain 7. In actual application, the motor in this scheme is generally a single-speed lifting motor or a double-speed lifting motor, and the specific type and model are determined according to actual usage.

[0034] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the limit device 9 is composed of an upper limit bumper 901, a limit switch mounting plate 902, an upper limit switch 903, a lower limit switch 904 and a lower limit bumper 905, one end of the upper limit bumper 901 and the lower limit bumper 905 are fixedly connected to the outer wall of the chain 7, and the outer wall of the chain 7 is sleeved with a pair of limit compression springs 8, one end of the limit compression spring 8 on one side is fixedly connected to the top of the hook device 6, and the other end of the limit compression spring 8 is fixedly connected to one end of the upper limit bumper 901, one end of the limit compression spring 8 on the other side is fixedly connected to one end of the lower limit bumper 905, and the other end of the limit compression spring 8 is fixedly connected to the outer wall of the chain tail stop device 13, the upper limit switch 903 and the lower limit switch 904 are both installed on one end of the limit switch mounting plate 902, the upper limit switch 903 is located at the top of the upper limit bumper 901, and the lower limit switch 904 is located at the top of the lower limit bumper 905.

[0035] By setting the limit device 9, the hook device 6 rises to the limit position, and the upper limit block 901 hits the spring sleeve. Due to the buffering effect of the limit compression spring 8, the upper limit block 901 directly hits the limit switch 903, thereby achieving the upper limit purpose; when the hook device 6 descends to the limit position, the lower limit switch 904 hits the spring sleeve, so that the upper plane of the spring sleeve directly hits the lower limit block 905, thereby achieving the lower limit purpose, optimizing the structural design of the limit device 9, and not prone to jamming and failure. The limit compression spring 8 is made of stainless steel material, which can make the limit compression spring 8 not easy to rust, and the sprocket 11 is made of alloy steel material, which can enhance its surface hardness, so that the meshing transmission of the sprocket 11 and the chain 7 is wear-resistant and not prone to chain biting, thereby extending the service life of the chain 7.

[0036] like Figure 1 , Figure 2 ,and Figure 6As shown, the reducer device 10 is composed of a housing 1001, an input shaft 1002, an input shaft plug cover 1003, a friction plate 1004, a clutch plate 1005, a gear shaft 1006, a gear 1007, an oil seal sleeve 1008, a housing cover 1009, an output shaft 10010 and a disc spring 10011. One end of the housing 1001 is fixedly connected to the outer wall of the motor 1, the input shaft 1002 is rotatably connected to the inner wall of the housing 1001 through a bearing, and one end of the input shaft 1002 is fixedly connected to the output end of the motor 1, the disc spring 10011 is fixedly connected between the input shaft 1002 and the outer wall of the bearing, and the input shaft plug cover 1003 and The clutch discs 1005 are all sleeved on the outer wall of the input shaft 1002, the friction plates 1004 are fixedly connected to the inner wall of the casing 1001, and the friction plates 1004 are in contact with the clutch discs 1005, a plurality of gear shafts 1006 are rotatably connected to the inner wall of the casing 1001 through bearings, and the gears 1007 are sleeved on the outer walls of the gear shafts 1006, the oil seal sleeve 1008 is fixedly connected to one end of the casing 1001, and the casing cover 1009 is fixedly connected to the other end of the casing 1001, the output shaft 10010 is rotatably connected to the inner wall of the casing 1001 through bearings, and one end of the output shaft 10010 is fixedly connected to one end of the sprocket 11.

[0037] Through the setting of the reducer device 10, the output end of the motor 1 drives the input shaft 1002 to rotate, and through the transmission between the multiple gears 1007 and the gear shaft 1006, the rotation speed of the input shaft 1002 is reduced, so that the output shaft 10010 drives the sprocket 11 to rotate slowly, so as to drive the chain 7 to rise and fall stably, and the objects can be lifted stably. In actual use, the sizes of the multiple gears 1007 and the gear shaft 1006 are not required to be consistent. The corresponding sizes can be selected according to actual use requirements to drive the gears 1007 and the gear shaft 1006, and the disc spring 10011 can be used for bearing preload to maintain constant pressure on the bearing and reduce wear.

[0038] like Figure 1 , Figure 2 , Figure 7 and Figure 8 As shown, the chain guide device 12 is composed of a left chain guide seat 1201, a chain guide plate 1202, a right chain guide seat 1203, a chain splitter plate 1204 and a chain guide positioning sleeve 1205. The left chain guide seat 1201 and the right chain guide seat 1203 are connected via the chain guide positioning sleeve 1205, the chain guide plate 1202 and the chain splitter plate 1204 are both located between the left chain guide seat 1201 and the right chain guide seat 1203, and the sprocket 11 is located between the chain guide plate 1202 and the chain splitter plate 1204.

[0039] By setting the chain guide device 12, when the sprocket 11 rotates, the traction chain 7 moves, and the chain guide plate 1202 can ensure that the chain 7 maintains the correct track during the movement, avoiding the chain 7 from deviating or jumping the track, thereby maintaining the stability and accuracy of the transmission system.

[0040] like Figure 3 , Fig. 9 , Fig.10 , Fig.11 and Fig.12 As shown, a pair of buffer cleaning mechanisms 16 each include a pair of U-shaped plates 1601, a plurality of flexible rollers 1602 are rotatably connected inside the pair of U-shaped plates 1601, a liquid storage frame 1603 is fixedly connected between opposite sides of a pair of mounting hangers 15, and a pair of telescopic rods 1604 are fixedly connected between one end of the liquid storage frame 1603 and one end of the U-shaped plate 1601, a movable rod 1605 is fixedly connected to one end of the U-shaped plate 1601, a circular hole is drilled at one end of the liquid storage frame 1603, and an end of the movable rod 1605 away from the U-shaped plate 1601 passes through the circular hole and extends into the liquid storage frame 1603, and the movable rod 1605 05 is provided with a buffer spring 1606 on the outer wall, one end of the buffer spring 1606 is fixedly connected to one end of the U-shaped plate 1601, and the other end of the buffer spring 1606 is fixedly connected to one end of the liquid storage frame 1603, a cleaning brush body 1609 is fixedly connected between the opposite sides of a pair of mounting hangers 15, and the cleaning brush body 1609 is in contact with the chain 7, a pair of U-shaped plates 1601 are fixedly connected at one end thereof, and a pair of collision balls 1608 are fixedly connected to the inner wall of the connecting plate 1607, and the outer walls of the two pairs of collision balls 1608 are in contact with one end of the cleaning brush body 1609.

[0041] By setting the buffer cleaning mechanism 16, since the cleaning brush body 1609 is in contact with the chain 7, the dust on the surface of the chain 7 can be brushed during the lifting process of the chain 7, so that the dust is not easy to cause an impact when the chain 7 is meshing with the sprocket 11, thereby reducing the friction loss when the chain 7 is meshing with the sprocket 11. In addition, when the chain 7 and the object are affected by external force or sudden start and stop, when the chain 7 and the object are deflected, the swinging chain 7 contacts with the multiple flexible rollers 1602 and squeezes them and the U-shaped plate 1601 to move toward the liquid storage frame 1603, so that the pair of telescopic rods 1604 shrinks, the movable rod 1605 extends into the liquid storage frame 1603, and squeezes the buffer spring 1606. The rolling of the flexible roller 1602 can to a certain extent control the chain 7. The swinging impact is absorbed and dispersed, and the elastic buffer of the buffer spring 1606 is used to initially buffer the swinging chain 7, thereby reducing the collision friction between the chain 7 and the chain guide device 12 in the swinging state, reducing the loss of the chain 7, and extending the service life of the chain 7. Moreover, when the U-shaped plate 1601 moves under the extrusion action, it also drives the connecting plate 1607 and a pair of collision balls 1608 to move synchronously, so that the pair of collision balls 1608 are separated from the cleaning brush body 1609. After buffering and resetting, the pair of collision balls 1608 contact and collide with the cleaning brush body 1609 again, generating vibration, shaking off the dust remaining in the cleaning process of the cleaning brush body 1609, reducing residue and interference, and facilitating the subsequent cleaning of the cleaning brush body 1609.

[0042] like Fig.11 and Fig.12 As shown, a liquid injection port 16031 is opened at the top of the two pairs of liquid storage frames 1603 , a sealing plug 16032 is sleeved on the top of the liquid injection port 16031 , and the outer wall of the sealing plug 16032 is in close contact with the inner wall of the liquid injection port 16031 .

[0043] By setting the liquid injection port 16031, it is convenient to add the carbon dioxide aqueous solution 1706 into the liquid storage frame 1603. After the addition is completed, the sealing plug 16032 is covered to seal it.

[0044] like Figure 3 , Fig.10 , Fig.11 and Fig.12As shown, the pair of auxiliary buffer mechanisms 17 each include a pair of circular plates 1701, the top ends of the pair of circular plates 1701 are respectively threadedly connected to the top ends of the pair of liquid storage frames 1603, the bottom ends of the pair of circular plates 1701 are fixedly connected to a sealing round block 1702, the top ends of the pair of liquid storage frames 1603 are each opened with a round opening, and the inner wall of the round opening is in close contact with the outer wall of the sealing round block 1702, the bottom end of the sealing round block 1702 is fixedly connected to a round rod 1703, and the bottom end of the round rod 1703 is fixedly connected to a film frame 1704, and the film frame A multi-porous reaction ball 1705 is placed inside 1704, and a sealing plate 1707 is fixedly connected to one end of the movable rod 1605 away from the U-shaped plate 1601, and the sealing plate 1707 is in close contact with the inner wall of the liquid storage frame 1603, a carbon dioxide aqueous solution 1706 is provided between the liquid storage frame 1603 and the sealing plate 1707, and the film frame 1704 is located on the top of the carbon dioxide aqueous solution 1706, and a cutting knife 1708 is fixedly connected to one end of the sealing plate 1707, and the cutting knife 1708 is located on one side of the film frame 1704.

[0045] Through the setting of the auxiliary buffer mechanism 17, when the swing force of the chain 7 is too large, it is difficult to effectively buffer by relying on the initial buffer alone, so that the U-shaped plate 1601 and the movable rod 1605 move too much, and the movable rod 1605 drives the sealing plate 1707 and the cutting knife 1708 to move toward the film frame 1704, so that the cutting knife 1708 contacts the film frame 1704 and cuts the film frame 1704, so that the multi-porous reaction ball 1705 falls into the carbon dioxide aqueous solution 1706. The multi-porous reaction ball 1705 is made of Mentos candy blocks. The carbon dioxide aqueous solution 1706 is in a saturated state and contains a large amount of pressurized dissolved carbon dioxide gas. The multiple micropores in the multi-porous reaction ball 1705 can provide a large number of nucleation points for the formation of carbon dioxide bubbles. At the same time, the gum arabic component inside the microporous reaction ball 1705 made of Mentos candy helps to reduce the surface tension of the liquid, which makes it easier for bubbles to detach from the liquid and grow, prompting a large amount of carbon dioxide to be released and form bubbles, and driving the liquid to spray, forming a fountain effect. The impact effect generated by the fountain effect and the extrusion effect on the sealing plate 1707 interact and offset each other, further reducing the collision and friction between the chain 7 and the chain guide device 12 in the swinging state, thereby effectively reducing the loss of the chain 7. The overall structural design of the buffer cleaning mechanism 16 and the auxiliary buffer mechanism 17 is compact and simple, does not require the drive of electronic equipment, is easy to install, and is not likely to cause excessive weight gain when installed on the electric hoist, and is not likely to interfere with the operation of the electric hoist.

[0046] Working principle: First, hang the object on the hook device 6, then the output end of the motor 1 drives the input shaft 1002 to rotate, and through the transmission between multiple gears 1007 and the gear shaft 1006, the speed of the input shaft 1002 is reduced, so that the output shaft 10010 drives the sprocket 11 to rotate slowly, and the chain guide device 12 pulls the chain 7, the hook device 6 and the object to move upward stably. At the same time, the cleaning brush body 1609 sweeps the dust on the surface of the chain 7 during its rise, and the hook device 6 rises to the limit The upper limit block 901 hits the spring sleeve, and due to the buffering effect of the limit compression spring 8, the upper limit block 901 directly hits the upper limit switch 903 to fix the upper limit. Then, the electric trolley 3 drives the suspended objects to move horizontally. During the movement, when the chain 7 and the objects are deflected due to sudden start and stop or external force, the swinging chain 7 contacts with the multiple flexible rollers 1602 and squeezes them and the U-shaped plate 1601 to move toward the liquid storage frame 1603, so that a pair of telescopic rods 1604 contracts, the movable rod 1605 extends into the liquid storage frame 1603 and squeezes the buffer spring 1606, and uses the rolling of the flexible roller 1602 and the elastic buffering of the buffer spring 1606 to perform preliminary buffering on the swinging chain 7. When the swinging force of the chain 7 is too large, the movement range of the U-shaped plate 1601 and the movable rod 1605 is too large, and the preliminary buffering is difficult to effectively buffer, the movable rod 1605 drives the sealing plate 1707 and the cutting knife 1708 to move toward the film frame 1704, so that the cutting knife 1708 It contacts with the film frame 1704 and cuts the film frame 1704, so that the microporous reaction ball 1705 falls into the carbon dioxide aqueous solution 1706, causing the carbon dioxide gas in the carbon dioxide aqueous solution 1706 to be released, and drives the liquid to spray outward to form a fountain, which washes on the sealing plate 1707, and cushions the squeezing movement of the sealing plate 1707, thereby further cushioning the swing of the chain 7, reducing the collision friction between the chain 7 and the chain guide device 12 in the swinging state, and reducing the loss of the chain 7.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A light and small lifting chain electric hoist, comprising a motor (1), characterized in that: The outer wall of the motor (1) is fixedly connected to a small electric control box (2), and the outer wall of the motor (1) is respectively provided with a reducer device (10) and an electric control box (5), the bottom of the motor (1) is provided with a chain storage box (4), and the top of the chain storage box (4) is fixedly connected to a chain guide device (12), the top of the chain guide device (12) is fixedly connected to an electric trolley (3), the interior of the chain guide device (12) is rotatably connected to a sprocket (11), the interior of the chain storage box (4) is provided with a chain (7), and the chain (7) is meshedly connected to the sprocket (11), and the bottom of the chain (7) is fixedly connected to a hanging device (3). A hook device (6), a limit device (9) is provided on the outer wall of the chain (7), and the limit device (9) is located at the top of the hook device (6), the end of the chain (7) away from the hook device (6) is fixedly connected to a chain tail stop device (13), the outer wall of the chain guide device (12) is fixedly connected to a side connecting plate (14), and the outer wall of the side connecting plate (14) is threadedly connected to two pairs of mounting hanging plates (15), a buffer cleaning mechanism (16) and an auxiliary buffer mechanism (17) are respectively provided between opposite sides of a pair of the mounting hanging plates (15), and the chain (7) is located between the pair of buffer cleaning mechanisms (16).

2. A light and small lifting chain electric hoist according to claim 1, characterized in that: The limit device (9) is composed of an upper limit bumper (901), a limit switch mounting plate (902), an upper limit switch (903), a lower limit switch (904) and a lower limit bumper (905), one end of each of the upper limit bumper (901) and the lower limit bumper (905) is fixedly connected to the outer wall of the chain (7), the outer wall of the chain (7) is sleeved with a pair of limit compression springs (8), one end of the limit compression spring (8) located on one side is fixedly connected to the top end of the hook device (6), and the other end of the limit compression spring (8) is fixedly connected to the upper limit One end of the bump block (901) is fixedly connected, one end of the limit compression spring (8) located on the other side is fixedly connected to one end of the lower limit bump block (905), and the other end of the limit compression spring (8) is fixedly connected to the outer wall of the chain tail stop device (13), the upper limit switch (903) and the lower limit switch (904) are both installed on one end of the limit switch mounting plate (902), the upper limit switch (903) is located at the top of the upper limit bump block (901), and the lower limit switch (904) is located at the top of the lower limit bump block (905).

3. A light and small lifting chain electric hoist according to claim 1, characterized in that: The reducer device (10) is composed of a housing (1001), an input shaft (1002), an input shaft plug cover (1003), a friction plate (1004), a clutch plate (1005), a gear shaft (1006), a gear (1007), an oil seal sleeve (1008), a housing cover (1009), an output shaft (10010) and a disc spring (10011); one end of the housing (1001) is fixedly connected to the outer wall of the motor (1); the input shaft (1002) is rotatably connected to the inner wall of the housing (1001) via a bearing; one end of the input shaft (1002) is fixedly connected to the output end of the motor (1); the disc spring (10011) is fixedly connected between the input shaft (1002) and the outer wall of the bearing; the input shaft plug cover (100 3) and the clutch plate (1005) are both sleeved on the outer wall of the input shaft (1002), the friction plate (1004) is fixedly connected to the inner wall of the housing (1001), and the friction plate (1004) is in contact with the clutch plate (1005), the plurality of gear shafts (1006) are rotatably connected to the inner wall of the housing (1001) through bearings, and the gear (1007) is sleeved on the outer wall of the gear shaft (1006), the oil seal sleeve (1008) is fixedly connected to one end of the housing (1001), and the housing cover (1009) is fixedly connected to the other end of the housing (1001), the output shaft (10010) is rotatably connected to the inner wall of the housing (1001) through bearings, and one end of the output shaft (10010) is fixedly connected to one end of the sprocket (11).

4. A light and small lifting chain electric hoist according to claim 1, characterized in that: The chain guide device (12) is composed of a left chain guide seat (1201), a chain guide plate (1202), a right chain guide seat (1203), a chain splitter plate (1204) and a chain guide positioning sleeve (1205); the left chain guide seat (1201) and the right chain guide seat (1203) are connected via the chain guide positioning sleeve (1205); the chain guide plate (1202) and the chain splitter plate (1204) are both located between the left chain guide seat (1201) and the right chain guide seat (1203); and the sprocket (11) is located between the chain guide plate (1202) and the chain splitter plate (1204).

5. The light and small lifting chain electric hoist according to claim 1 is characterized in that: The pair of buffer cleaning mechanisms (16) each comprises a pair of U-shaped plates (1601), the interiors of the pair of U-shaped plates (1601) are rotatably connected to a plurality of flexible rollers (1602), a liquid storage frame (1603) is fixedly connected between opposite sides of the pair of mounting hangers (15), and a pair of telescopic rods (1604) are fixedly connected between one end of the liquid storage frame (1603) and one end of the U-shaped plate (1601), and a movable rod (1604) is fixedly connected to one end of the U-shaped plate (1601). 1605), a circular hole is drilled at one end of the liquid storage frame (1603), and the end of the movable rod (1605) away from the U-shaped plate (1601) passes through the circular hole and extends into the liquid storage frame (1603), the outer wall of the movable rod (1605) is provided with a buffer spring (1606), one end of the buffer spring (1606) is fixedly connected to one end of the U-shaped plate (1601), and the other end of the buffer spring (1606) is fixedly connected to one end of the liquid storage frame (1603).

6. A light and small lifting chain electric hoist according to claim 5, characterized in that: A cleaning brush body (1609) is fixedly connected between opposite sides of a pair of mounting hangers (15), and the cleaning brush body (1609) is in contact with the chain (7); a connecting plate (1607) is fixedly connected to the adjacent ends of a pair of U-shaped plates (1601), and a pair of collision balls (1608) are fixedly connected to the inner wall of the connecting plate (1607); and the outer walls of the two pairs of collision balls (1608) are in contact with one end of the cleaning brush body (1609).

7. A light and small lifting chain electric hoist according to claim 5, characterized in that: The tops of the two pairs of liquid storage frames (1603) are each provided with a liquid injection port (16031), the tops of the liquid injection ports (16031) are sleeved with sealing plugs (16032), and the outer wall of the sealing plug (16032) is in close contact with the inner wall of the liquid injection port (16031).

8. The light and small lifting chain electric hoist according to claim 5 is characterized by: The pair of auxiliary buffer mechanisms (17) each comprises a pair of circular plates (1701), the top ends of the pair of circular plates (1701) are respectively threadedly connected to the top ends of a pair of liquid storage frames (1603), the bottom ends of the pair of circular plates (1701) are fixedly connected to a sealing round block (1702), the top ends of the pair of liquid storage frames (1603) are each opened with a round opening, and the inner wall of the round opening is in close contact with the outer wall of the sealing round block (1702), the bottom end of the sealing round block (1702) is fixedly connected to a round rod (1703), and the bottom end of the round rod (1703) is fixedly connected to a film frame (1704), and the film frame (1 A multi-porous reaction ball (1705) is placed inside the U-shaped plate (1604), and a sealing plate (1707) is fixedly connected to one end of the movable rod (1605) away from the U-shaped plate (1601), and the sealing plate (1707) is in close contact with the inner wall of the liquid storage frame (1603), a carbon dioxide aqueous solution (1706) is provided between the liquid storage frame (1603) and the sealing plate (1707), and the film frame (1704) is located on the top of the carbon dioxide aqueous solution (1706), and a cutting knife (1708) is fixedly connected to one end of the sealing plate (1707), and the cutting knife (1708) is located on one side of the film frame (1704).

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