Self-lubricating electric hoist

Abstract

This invention relates to the field of electric hoist technology, specifically to a self-lubricating electric hoist, comprising a hoist body, a rope winder, a wire rope, a housing, a lubrication component, a triggering component, a moving component, a rotating component, and a control component. The rope winder is fixedly installed at the bottom of the hoist body, with both ends of the wire rope located within the hoist body and the rope winder, respectively. The top and bottom of the housing are fixedly installed at the bottom of the hoist body and the top of the rope winder, respectively. The lubrication component and the triggering component are fixedly installed within the housing, with the triggering component located below the lubrication component. The moving component is fixedly installed on the inner walls of both sides of the housing, and the rotating component is fixedly installed at the bottom of the housing, with the rotating component located below the moving component. The hoist body is electrically connected to the control component. This invention solves the problem that existing electric hoists cannot self-lubricate and require manual lubrication, thus achieving self-lubrication for the electric hoist.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric hoist, in particular to a self-lubricating electric hoist. BACKGROUND

[0002] Electric hoist is a special lifting equipment, which is installed on the overhead crane, gantry crane and other equipment to help industrial and mining enterprises, warehousing, wharf and other places to lift goods. Electric hoist has the characteristics of small, light, easy to operate, convenient to use and so on. According to its different structure and function, electric hoist can be divided into many types, including ring chain electric hoist, steel wire rope electric hoist, corrosion-resistant electric hoist, double-drum electric hoist, winch, micro electric hoist, group hoist electric hoist and multifunctional lifting machine.

[0003] Steel wire rope electric hoist is often used in industrial production to help lift various heavy objects, which is used very frequently in industrial production. In sheet metal production workshop, steel wire rope electric hoist is installed on gantry crane, which is often used to lift various workpieces and various machine equipment.

[0004] The existing steel wire rope electric hoist, due to long-term lifting of various heavy objects, and in the process of use, the lubricating oil on the steel wire rope will gradually be consumed, which will affect the use of electric hoist, resulting in the electric hoist not smooth in the running process, and the steel wire rope may be stuck when it is stretched or contracted, affecting the safety of use. Due to the loss of lubricating oil, there is a large friction between the steel wire rope and the internal electric hoist, which causes the steel wire rope to be seriously worn and broken. At the same time, after contacting with air for a long time, corrosion and rust will occur on the steel wire rope, which reduces the strength of the steel wire rope. In the existing electric hoist lubrication, the workers usually use brushes to brush lubricating oil on the steel wire rope, which makes the lubrication efficiency low and needs to consume a lot of time for lubrication, increasing the labor intensity of workers. Moreover, the electric hoist needs to be lubricated regularly, which is more complicated to operate.

[0005] In view of the above problems, the present application develops a self-lubricating electric hoist. SUMMARY

[0006] The technical problem to be solved by the present application is that in the existing electric hoist, when lubricating the electric hoist, workers usually use brushes to brush lubricating oil on the steel wire rope, which consumes a lot of time for lubrication, increases the labor intensity and has low lubrication efficiency.

[0007] The application provides the following technical scheme: a self-lubricating electric hoist, comprising an electric hoist body, a rope winding device, a steel wire rope, a machine shell, a lubricating assembly, a triggering assembly, a moving assembly, a rotating assembly and a control assembly; the machine shell is fixedly installed at the bottom of the electric hoist body, the rope winding device is fixedly installed at the bottom of the machine shell, and the two ends of the steel wire rope are located in the electric hoist body and the rope winding device respectively; the specific installation mode can be connected by bolt connection or welding; the lubricating assembly is fixedly installed in the machine shell, and is used for making the lubricating oil intermittently flow out of the oil tank and sprayed on the steel wire rope through the extension of the steel wire rope; the triggering assembly is fixedly installed in the machine shell and located below the lubricating assembly; the triggering assembly triggers the lubricating assembly to work by the friction force generated when the steel wire rope moves relative to the triggering assembly, so that the lubricating oil is sprayed on the steel wire rope; the specific installation mode can be connected by bolt connection or welding; the moving assembly is fixedly installed on the inner walls of the two sides of the machine shell and located at the same horizontal position as the triggering assembly; the moving assembly is used for converting the circular motion of the rope winding device into linear motion through the contraction of the steel wire rope, so that the distance between the triggering assembly and the steel wire rope is increased; the rotating assembly is fixedly installed at the bottom of the machine shell and located below the moving assembly; the rotating assembly is used for transmitting the power of the rope winding device to the moving assembly and converting the clockwise and counterclockwise circular motion into up-down linear motion through the cooperation of the rotating assembly and the moving assembly; the specific installation mode can be connected by bolt connection or welding; and the electric hoist body is electrically connected with the control assembly.

[0008] In order to ensure that the electric hoist does not need to be lubricated manually and does not need to be lubricated regularly during the working process, the electric hoist realizes self-lubrication through friction during the working process; when the electric hoist works, the steel wire rope will generate a certain friction force with the triggering assembly as the steel wire rope extends, so that the triggering assembly is started to drive the lubricating assembly to spray lubricating oil on the steel wire rope, thereby ensuring the lubrication degree of the steel wire rope; the self-lubrication of the electric hoist can be realized during the working process, the time for manual lubrication can be saved, and the labor force can be reduced; compared with regular lubrication, the lubrication by friction does not need to be lubricated separately, and the steel wire rope is lubricated only when it is extended during the working process, and the steel wire rope does not need to be lubricated when it is contracted, and the length of the steel wire rope used during the working process is the lubrication length, so that the lubrication is more efficient.

[0009] The lubricating assembly comprises a box, a plug, a movable column and a compression spring; the box is fixedly installed inside the shell, and the top of the box is fixedly connected with the top of the shell; a circular through hole with a diameter slightly larger than the diameter of the steel wire rope is formed at the central position of the box, a rectangular cavity is formed at the top of the box, two circular grooves are formed at the bottom of the box, and the two circular grooves are located on the diagonal lines respectively, a rectangular groove is formed at the top of the circular groove, symmetric circular holes are formed at the two sides of the rectangular groove, and the two circular holes respectively penetrate the circular through hole and the inner wall of the box; the box is fixedly installed inside the shell, and the specific installation mode can be connected by bolt connection or welding; the plug is movably installed in the rectangular groove at the bottom of the box, and the plug is used to control the outflow of lubricating oil by vertical linear motion; the movable column is fixedly installed at the bottom of the plug, the movable column is located in the circular groove at the bottom of the box, the compression spring is fixedly installed at the top end of the movable column, the compression spring is used to convert the elastic potential energy into tension by the elastic potential energy, and the plug is pulled back to the original position, and the specific installation mode can be connected by bolt connection or welding.

[0010] It should be noted that the circular grooves at the bottom of the box are located on the diagonal lines, which are used to install the movable column, the movement of the two movable columns drives the movement of the plug, so as to realize the lubrication of the steel wire rope, the steel wire rope can be lubricated from both sides, the steel wire rope can be fully lubricated, and the movement of the movable column is triggered by the trigger assembly and is intermittent contact, which ensures that the lubricating oil will not be sprayed too much when the steel wire rope is lubricated, so as to prevent the lubricating oil from moving downward with the steel wire rope and affecting the triggering of the trigger assembly, and at the same time, the intermittent triggering can save the lubricating oil and prevent the lubricating oil from being wasted, and the rectangular cavity at the top of the box is used to store the lubricating oil, and the circular holes formed in the rectangular groove at the bottom of the box are used for the circulation of the lubricating oil.

[0011] The trigger assembly comprises a pulley, a rotating shaft, a sliding block and a pressure spring; two pulleys are rotatably installed on two rotating shafts respectively, the pulleys are used to rotate by the friction between the pulleys and the steel wire rope, so as to determine whether the steel wire rope has lubricating oil, and the specific installation mode can be connected by bolt connection or welding; a cylindrical protrusion is arranged outside each pulley, the cylindrical protrusion is used to rotate with the pulley and trigger the lubricating assembly to start when the pulley rotates by friction, and spray lubricating oil on the steel wire rope; an arc groove is formed on the surface of each pulley, and the arc grooves on the surfaces of the two pulleys are located on the same straight line, the arc grooves are used to place the steel wire rope in the two arc grooves, and the friction between the steel wire rope and the arc grooves makes the steel wire rope rotate the pulleys during movement; sliding blocks are rotatably installed at the two ends of the two rotating shafts, and pressure springs are fixedly installed outside the four sliding blocks.

[0012] To ensure the self-lubrication of the electric hoist, the friction between the wire rope and the pulley drives the pulley to rotate, thus achieving self-lubrication of the wire rope. The cylindrical protrusions on the pulleys are used to trigger the lubrication assembly. It should be noted that when the wire rope is extended, the slider on the trigger assembly will not move. The elastic potential energy of the pressure spring keeps the slider and the wire rope at a certain distance. When the wire rope retracts, the slider will compress the spring, causing the two pulleys to move away from the wire rope. This is to ensure that when the wire rope retracts, the trigger assembly will rotate the pulleys, thereby lubricating the wire rope through the lubrication assembly above the trigger assembly. When the lubricated wire rope passes through the trigger assembly, the pulleys on the trigger assembly will not rotate, preventing subsequent wire rope from being lubricated and resulting in uneven lubrication. Therefore, when the wire rope retracts, the pulleys will move away from the wire rope.

[0013] The moving component includes a sleeve, a conical block, and a threaded cap. Multiple strip-shaped protrusions are arranged along the axis on the inner wall of the sleeve, and the tops of these protrusions are conical. These protrusions restrict the rotation of the threaded cap and allow it to move along the axis. The conical design allows the threaded cap to quickly enter the sleeve using its own weight and rotation. Two sleeves are fixedly installed on the inner wall of the housing, and are located directly below the center of the two sliders. The installation can be done by bolting or welding. Conical blocks are slidably installed inside each of the two sleeves, and each conical block has a circular groove at its bottom. A hollow cylinder is placed inside each of the circular grooves, and a threaded cap is rotatably installed at the bottom of each conical block. The conical blocks are used to convert vertical movement into horizontal linear movement, causing the sliders on the trigger component to move in the opposite direction.

[0014] To ensure that the threaded cap can push the conical block, the threaded cap must move in a straight line. The strip-shaped protrusion on the inner wall of the sleeve can restrict the rotation of the threaded cap and convert the rotational motion into linear motion. At the same time, the conical structure on the strip-shaped protrusion allows the threaded cap to quickly enter the strip-shaped protrusion and move in a straight line. The inclined surfaces on both sides of the conical block allow the slider to move quickly to both sides.

[0015] The rotating assembly includes bevel gears, drive shafts, and threaded rods. Two bevel gears are rotatably mounted in the rope winder, transmitting power from the winder to the drive shafts. The forward or reverse rotation of the winder converts circular motion into vertical linear motion, causing the moving assembly to move. Drive shafts are fixedly mounted on each of the two bevel gears, and threaded rods are fixedly mounted on each of the two drive shafts. These threaded rods convert circular motion into vertical linear motion. The connection can be achieved using bolts or welding.

[0016] By using bevel gears to transmit power to the moving components, no other power source is needed. The bevel gears can be driven to rotate according to the forward and reverse rotation of the electric hoist, thereby transmitting power to the threaded rod through the drive shaft. The rotation of the threaded rod allows the threaded cap to make linear motion and pushes the conical block to move, thereby controlling the movement of the pulley on the trigger component.

[0017] Each of the two plugs has a small hole, and a sealing rubber gasket is fixedly installed on each of the two plugs on both sides. The sealing rubber gasket has an "8" shape, and the small hole is located in the lower part of the "8" shape of the sealing rubber gasket. The sealing rubber gasket is used to seal the lubricating oil and ensure that the lubricating oil will not flow out through the gap between the plugs when the plugs are opened or closed.

[0018] Each of the two plugs has a small hole, and a sealing rubber gasket is fixedly installed on each of the two plugs on both sides. The sealing rubber gasket has an "8" shape, and the small hole is located in the lower part of the "8" shape of the sealing rubber gasket. The sealing rubber gasket is used to seal the lubricating oil and ensure that the lubricating oil will not flow out through the gap between the plugs when the plugs are opened or closed. The specific installation method can be bolt connection or adhesive bonding.

[0019] It should be noted that since the lubrication assembly lubricates the wire rope intermittently, the reciprocating motion of the plug during lubrication will reduce the seal between the plug and the rectangular groove. Therefore, installing a sealing rubber gasket on the plug can ensure the sealing effect of the plug. The sealing rubber gasket has an "8" shaped structure, which can effectively seal the round holes and the small holes separately. The small holes on the plug are the channels for the lubricating oil to flow out. By moving the plug, the channels can be opened and closed to control the flow of lubricating oil. The sealing rubber gasket around the small holes ensures that the lubricating oil will not leak.

[0020] When the two pulleys are in self-lubricating working state, the maximum distance between their outer edges is 0.5mm. The radius of the arc groove on the surface of the two pulleys is the radius of the wire rope, and the wire rope is located between the two arc grooves.

[0021] It should be noted that in order to ensure that the pulley can rotate through friction while lubricating the wire rope, and that the lubricated wire rope cannot trigger the pulley to rotate, a distance of 0.5mm must be maintained between the pulley and the wire rope, and this distance cannot exceed 0.5mm. If it exceeds 0.5mm, it will affect the detection of the friction between the wire ropes, resulting in no lubrication of the wire rope. Keeping the maximum distance within 0.5mm will neither affect the detection of the wire rope nor allow for further lubrication of the already lubricated wire rope.

[0022] Inside the sleeve, multiple strip-shaped protrusions are fixedly installed below each elastic plate, and the elastic plates are inclined at 30°. The other end of the multiple elastic plates is located between adjacent rectangular protrusions of the threaded cap when the threaded rod rotates in the opposite direction. The elastic plates are used to convert the rotation of the threaded cap into vertical upward linear motion. The specific installation method can be to connect them by bolts or by welding.

[0023] To ensure the threaded cap can move upwards and rotate with the threaded rod at the bottom, the elastic plate on the bottom of the sleeve is tilted at 30°. When the threaded cap rotates in the same direction as the elastic plate, the threaded cap will compress the elastic plate without affecting its rotation. When the threaded cap rotates in the opposite direction, the elastic plate will engage with the rectangular protrusions around the threaded cap, restricting its rotation. Once the threaded cap can no longer rotate, it will move upwards, and the rectangular protrusions will move with the elastic plate into the strip-shaped protrusions on the sleeve, ensuring the linear movement of the threaded cap.

[0024] The threaded cap is provided with multiple rectangular protrusions around its perimeter, and the bottom of each rectangular protrusion has an inverted conical structure. The maximum diameter of the threaded cap body is equal to the maximum diameter of the hollow cylinder on the conical block.

[0025] It should be noted that the bottom of the rectangular protrusions around the threaded cap is an inverted conical structure. This is to ensure that the threaded cap can quickly engage with the strip protrusions on the inner wall of the sleeve by its own weight at the top of the threaded rod, so as to achieve the downward linear movement of the threaded cap and cooperate with the conical structure on the strip protrusions on the sleeve.

[0026] The threaded rod has protruding blocks radially arranged at the top and middle. The maximum diameter of the protruding blocks is greater than the inner diameter of the threaded cap, and the maximum diameter of the protruding blocks is less than the inner diameter of the hollow cylinder on the conical block.

[0027] The protrusions at the top and middle of the threaded rod are used to limit the movement distance of the threaded cap, ensuring that the threaded cap will not detach from the threaded rod during rotation. They also limit the distance that the threaded cap can push the conical block to move the pulley. The maximum diameter of the protrusion is smaller than the inner diameter of the hollow cylinder on the conical block to ensure that the protrusion can enter the hollow cylinder when the threaded cap pushes the conical block, without affecting the movement of the conical block.

[0028] The beneficial effects of this invention are as follows:

[0029] 1. This invention provides a housing between the electric hoist body and the rope winder. Through the cooperation of the lubrication components and the wire rope, the electric hoist achieves self-lubrication of the wire rope as it extends and retracts during operation. This eliminates the need for manual lubrication, saving a significant amount of time, reducing the labor intensity of workers, and improving lubrication efficiency.

[0030] 2. This invention, by setting a triggering component and a lubrication component inside the housing, and through the cooperation between the triggering component and the lubrication component, as well as the friction between the triggering component and the wire rope, can determine the lubricating oil wear on the wire rope and lubricate the wire rope in a timely manner. There is no need for manual periodic detection of the lubricating oil wear on the wire rope of the electric hoist; it can automatically detect and automatically lubricate.

[0031] 3. This invention, by providing a moving component and a rotating component inside the casing, allows the wire rope on the electric hoist to be lubricated without retracting during operation, but lubrication is required when the wire rope extends. This ensures comprehensive lubrication of the wire rope and allows lubrication to be performed according to the length of the wire rope extended during the working period. Attached Figure Description

[0032] The disclosure of this invention will become more readily understood by referring to the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention.

[0033] Figure 1 This is a three-dimensional structural diagram of a preferred embodiment of the present invention;

[0034] Figure 2 This is a three-dimensional structural diagram of the housing and lubrication assembly according to a preferred embodiment of the present invention;

[0035] Figure 3 This is a three-dimensional structural diagram of the internal structure of the casing according to a preferred embodiment of the present invention;

[0036] Figure 4 This is a three-dimensional structural diagram of a preferred embodiment of the present invention, showing a housing without lubrication components.

[0037] Figure 5 This is a three-dimensional structural diagram of the housing without lubrication components, representing a preferred embodiment of the present invention.

[0038] Figure 6 This is a three-dimensional structural diagram of the casing according to a preferred embodiment of the present invention;

[0039] Figure 7This is a three-dimensional structural diagram of the box body according to a preferred embodiment of the present invention;

[0040] Figure 8 This is a three-dimensional structural schematic diagram of the box body from another perspective of a preferred embodiment of the present invention;

[0041] Figure 9 This is a three-dimensional structural diagram of the lubrication assembly according to a preferred embodiment of the present invention;

[0042] Figure 10 This is a three-dimensional structural diagram of the internal structure of the lubrication assembly according to a preferred embodiment of the present invention;

[0043] Figure 11 This is a three-dimensional structural diagram of the internal structure of the moving component and the rotating component according to a preferred embodiment of the present invention;

[0044] Figure 12 This is a three-dimensional structural diagram of the rotating assembly according to a preferred embodiment of the present invention;

[0045] Figure 13 This is a three-dimensional structural diagram of the sleeve according to a preferred embodiment of the present invention;

[0046] Figure 14 This is a three-dimensional structural schematic diagram of the sleeve from another perspective of a preferred embodiment of the present invention;

[0047] Figure 15 This is a three-dimensional structural diagram of the threaded cap according to a preferred embodiment of the present invention;

[0048] Figure 16 This is a three-dimensional structural diagram of the lubrication assembly without a housing according to a preferred embodiment of the present invention;

[0049] Figure 17 This is a three-dimensional structural diagram of the cone-shaped block according to a preferred embodiment of the present invention;

[0050] Figure 18 This is a three-dimensional structural diagram of the pulley, shaft, and slider according to a preferred embodiment of the present invention.

[0051] In the diagram: 1. Electric hoist body; 2. Rope winder; 3. Wire rope; 4. Housing; 5. Lubrication assembly; 51. Box; 511. Circular through hole; 512. Rectangular cavity; 513. Circular groove; 514. Rectangular groove; 515. Circular hole; 52. Plug; 521. Fine hole; 522. Sealing rubber gasket; 53. Moving column; 54. Compression spring; 6. Trigger assembly; 61. Pulley; 611. 612. Cylindrical protrusion; 62. Arc groove; 63. Rotating shaft; 64. Slider; 7. Pressure spring; 7. Moving assembly; 71. Sleeve; 711. Strip protrusion; 712. Elastic sheet; 72. Conical block; 721. Circular groove; 722. Hollow cylinder; 73. Threaded cap; 731. Rectangular protrusion; 8. Rotating assembly; 81. Bevel gear; 82. Drive shaft; 83. Threaded rod; 831. Protrusion. Detailed Implementation

[0052] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0053] In Example 1, during operation, the electric hoist automatically lubricates the wire rope 3 based on its lubrication level. The lubrication requirement is determined by the friction between the wire rope 3 and the pulley 61 on the trigger assembly 6. When the friction is high, the pulley 61 on the trigger assembly 6 rotates as the wire rope 3 extends, causing the movable column 53 on the lubrication assembly 5 to move. This moves the stopper 52, allowing lubricating oil in the housing 51 to flow out through the stopper 52, thus lubricating the wire rope 3. No manual lubrication is required; the wire rope 3 self-lubricates during operation. The lubrication length of the wire rope 3 is determined by its extension length during operation, and specific sections of the wire rope 3 with high friction can be lubricated individually.

[0054] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 11 and Figure 12As shown, a self-lubricating electric hoist includes a hoist body 1, a rope winder 2, a wire rope 3, a housing 4, a lubrication component 5, a triggering component 6, a moving component 7, a rotating component 8, and a control component. The housing 4 is fixedly installed at the bottom of the hoist body 1, and the rope winder 2 is fixedly installed at the bottom of the housing 4. The two ends of the wire rope 3 are located inside the hoist body 1 and the rope winder 2, respectively, and are connected by bolts. The lubrication component 5 is fixedly installed inside the housing 4. The lubrication component 5 allows lubricating oil to intermittently flow from an oil tank and spray onto the wire rope 3 as it extends. The triggering component 6 is fixedly installed inside the housing 4 and is located below the lubrication component 5. The triggering component activates the lubrication component by the friction generated when the wire rope moves relative to it, causing the lubricating oil to be sprayed onto the wire rope. The specific installation method can be bolt connection; the moving component 7 is fixedly installed on the inner walls of both sides of the housing 4 and is at the same horizontal position as the trigger component 6. The moving component 7 is used to convert the circular motion on the rope winder 2 into linear motion by the contraction of the wire rope 3, thereby increasing the distance between the trigger component 6 and the wire rope 3; the rotating component 8 is fixedly installed at the bottom of the housing 4 and is located below the moving component 7. The rotating component 8 is used to transmit the power on the rope winder 2 to the moving component 7, and through the mutual cooperation between the rotating component 8 and the moving component 7, converts the clockwise and counterclockwise circular motion into up and down linear motion. The specific installation method is bolt connection; the electric hoist body 1 is electrically connected to the control component, and the control component controls the start-up and operation of the electric hoist body 1, so that the entire device can work in a coordinated and stable manner.

[0055] When the electric hoist is working, the control component first controls the start of the electric hoist. Then, the wire rope 3 will slowly extend from the rope reel 2 and pass through the inside of the housing 4. When passing through the inside of the housing 4, the wire rope 3 will first pass through the trigger component 6 and then through the lubrication component 5. When the wire rope 3 passes through the trigger component 6, if the friction between the wire rope 3 and the trigger component 6 is large, the trigger component 6 will be activated by friction during the extension and movement of the wire rope 3. In turn, the trigger component 6 will activate the lubrication component 5, which will spray lubricating oil onto the wire rope 3. As the wire rope 3 moves, the trigger component 6 and the lubrication component 5 work together to coat the wire rope 3 with lubricating oil, achieving self-lubrication of the electric hoist. During this process, the rotating component 8 will also be activated as the wire rope 3 extends, but this will not affect the operation of the electric hoist.

[0056] When the wire rope 3 retracts, the control component controls the electric hoist body 1 to rotate in the opposite direction. During the rotation, the power on the rope winder 2 is transmitted to the rotating component 8, causing the rotating component 8 to start. The rotating component 8 drives the rotating moving component 7 to move and cuts off the trigger component 6, so that when the wire rope 3 retracts, the trigger component 6 will not be activated and lubricating oil will not be sprayed on the wire rope 3.

[0057] like Figure 2 , Figure 3 , Figure 7 , Figure 8 , Figure 9 , Figure 10 and Figure 16 As shown, the lubrication assembly 5 includes a housing 51, a plug 52, a movable column 53, and a compression spring 54. The housing 51 is fixedly installed inside the housing 4, and the top of the housing 51 is fixedly connected to the top of the housing 4. A circular through hole 511 with a diameter slightly larger than that of the steel wire rope 3 is opened at the center of the housing 51. A rectangular cavity 512 is opened at the top of the housing 51. Two circular grooves 513 are opened at the bottom of the housing 51, and the two circular grooves 513 are located on opposite diagonals. A rectangular groove 514 is opened at the top of the circular grooves 513. Symmetrical circular holes 515 are opened on both sides of the rectangular grooves 514, and the two circular holes 515 are... The circular through-hole 511 and the inner wall of the housing 51 are not penetrated; the housing 51 is fixedly installed inside the casing 4, specifically by bolt connection; a plug 52 is movably installed in the rectangular groove 514 at the bottom of the housing 51, the plug 52 is used to control the flow of lubricating oil through vertical linear movement; a movable column 53 is fixedly installed at the bottom of the plug 52, the movable column 53 is located in the circular groove 513 at the bottom of the housing 51, and a compression spring 54 is fixedly installed at the top of the movable column 53, the compression spring 54 is used to pull the plug 52 back to its original position by converting its own elastic potential energy into tension; the connection is made by welding.

[0058] During operation, the electric hoist activates the trigger assembly 6, which in turn activates the lubrication assembly 5. The movable column 53 on the lubrication assembly 5 is then subjected to pressure from the trigger assembly 6, causing the movable column 53 to move upward. This causes the movable column 53 to compress the compression spring 54, which in turn causes the plug plate 52 to move upward. This allows the lubricating oil inside the housing 51 to flow out through the round hole 515 on the rectangular groove 514, into the circular through hole 511, and then spray onto the wire rope 3, thus lubricating the wire rope 3.

[0059] like Figure 3 , Figure 4 , Figure 5 and Figure 18As shown, the triggering assembly 6 includes pulleys 61, rotating shafts 62, sliders 63, and pressure springs 64. Two pulleys 61 are rotatably mounted on two rotating shafts 62. The pulleys 61 rotate due to friction with the wire rope 3, thereby determining whether there is lubricating oil on the wire rope 3. The pulleys are connected by welding. Cylindrical protrusions 611 are provided on the outer sides of each pulley 61. These protrusions trigger the lubrication assembly as the pulleys rotate due to friction. When component 5 is activated, lubricating oil is sprayed onto the wire rope 3. Two arc-shaped grooves 612 are respectively formed on the surfaces of the two pulleys 61, and these grooves are aligned on the same straight line. The arc-shaped grooves 612 are used to place the wire rope 3 within them, and the friction between the wire rope 3 and the arc-shaped grooves 612 causes the wire rope 3 to rotate as it moves. Slider blocks 63 are rotatably mounted at both ends of the two rotating shafts 62, and pressure springs 64 are fixedly mounted on the outer sides of the four sliders 63.

[0060] When the wire rope 3 extends, due to the friction between the wire rope 3 and the pulley 61 on the trigger assembly 6, the pulley 61 on the trigger assembly 6 will rotate during the movement of the wire rope 3. During the rotation of the pulley 61 and the rotating shaft 62, the cylindrical protrusion 611 on the outer side of the pulley 61 will rotate together with the pulley 61. At the same time, the cylindrical protrusion 611 will exert an upward pressure on the lubrication assembly 5, causing the lubrication assembly 5 to start.

[0061] When the wire rope 3 retracts, it drives the rotating component 8 to rotate. The rotating component 8 drives the moving component 7 to move, which in turn applies outward pressure to the slider 63, causing the slider 63 to move outward. During this movement, the slider 63 compresses the pressure spring 64. The slider 63 then drives the rotating shaft 62 and pulley 61 to move outward, increasing the distance between the two pulleys 61 and the wire rope 3. When the wire rope 3 retracts, the lubrication component 5 will not be triggered. When the wire rope 3 extends, the moving component 7 will not apply pressure to the slider 63. Through the elastic potential energy of the pressure spring 64, the slider 63 will return to its original position, and the pulleys 61 will come into contact with the wire rope 3.

[0062] like Figure 3 , Figure 4 , Figure 5 , Figure 11 , Figure 13 , Figure 14 , Figure 15 and Figure 17As shown, the moving assembly 7 includes a sleeve 71, a conical block 72, and a threaded cap 73. Multiple strip-shaped protrusions 711 are respectively arranged along the axis on the inner wall of the sleeve 71, and the tops of the multiple strip-shaped protrusions 711 are conical structures. The strip-shaped protrusions 711 are used to restrict the rotation of the threaded cap 73 and allow the threaded cap 73 to move along the axis. The conical structure is designed so that the threaded cap 73 can quickly enter the sleeve 71 through its own weight and rotation. Two sleeves 71 are respectively fixedly installed on the inner sidewall of the housing 4, and the two... The sleeves 71 are located directly below the center position between the two sliders 63, and are installed by bolt connection. Conical blocks 72 are slidably installed inside the two sleeves 71, and circular grooves 721 are opened at the bottom of the two conical blocks 72. Hollow cylinders 722 are respectively provided in the two circular grooves 721. Threaded caps 73 are rotatably installed at the bottom of the two conical blocks 72. The conical blocks 72 are used to convert vertical movement into horizontal linear movement, so that the sliders 63 on the trigger assembly 6 move in the opposite direction.

[0063] When the wire rope 3 retracts, the power of the electric hoist will be transmitted from the rope reel 2 to the rotating component 8. The rotation of the rotating component 8 causes the threaded cap 73 on the moving component 7 to move upward in the sleeve 71, and pushes the conical block 72 to move upward, applying an outward force to the slider 63 on the trigger component 6, causing the slider 63 to move. When the threaded cap 73 moves to the top, it will continue to rotate with the rotating component 8 and will no longer move upward.

[0064] When the wire rope 3 extends, the rotating component 8 rotates in the opposite direction, causing the threaded cap 73 on the moving component 7 to move downward inside the sleeve 71. The conical block 72, due to its own weight and the elastic potential energy of the pressure spring 64 on the trigger component 6, will move downward and return to its original position. When the threaded cap 73 moves to the lowest end, it will continue to rotate with the rotating component 8 and will no longer move downward.

[0065] like Figure 2 , Figure 3 , Figure 4 , Figure 11 and Figure 12 As shown, the rotating assembly 8 includes bevel gears 81, drive shafts 82, and threaded rods 83. Two bevel gears 81 are rotatably mounted in the rope winder 2. The bevel gears 81 transmit power from the rope winder 2 to the drive shafts 82, and through the forward or reverse rotation of the rope winder 2, convert circular motion into vertical linear motion, causing the moving assembly 7 to move. Drive shafts 82 are fixedly mounted on the two bevel gears 81, and threaded rods 83 are fixedly mounted on the two drive shafts 82. The threaded rods 83 convert circular motion into vertical linear motion, and are connected by welding.

[0066] When the wire rope 3 extends, the power of the electric hoist is transmitted from the rope reel 2 to the rotating assembly 8. The power is then transmitted to the drive shaft 82 via the bevel gear 81 on the rotating assembly 8. The drive shaft 82 drives the threaded rod 83 to rotate in the forward direction. When the wire rope 3 retracts, the power of the electric hoist is also transmitted from the rope reel 2 to the rotating assembly 8. The power is then transmitted to the drive shaft 82 via the bevel gear 81 on the rotating assembly 8. The drive shaft 82 drives the threaded rod 83 to rotate in the reverse direction.

[0067] like Figure 10 and Figure 16 As shown, each of the two plug pieces 52 has a fine hole 521. A sealing rubber gasket 522 is fixedly installed on each of the two plug pieces 52 on both sides. The sealing rubber gasket 522 has an "8" shaped structure, and the fine hole 521 is located in the lower part of the "8" shaped structure of the sealing rubber gasket 522. The sealing rubber gasket 522 is used to seal the lubricating oil to ensure that the lubricating oil will not flow out through the gap between the plug pieces 52 when the plug pieces 52 are opened or closed. The specific installation method is to connect them by adhesive bonding.

[0068] When the stopper 52 moves upward, the fine hole 521 on the stopper 52 will communicate with the round hole 515 on the rectangular groove 514 on the housing 51, so that the lubricating oil flows out through the fine hole 521 on the stopper 52 and into the round hole 515 on the other side, and lubricates the wire rope 3. When the stopper 52 moves downward, it will seal the round hole 515, so that the lubricating oil in the round hole 515 cannot flow through the fine hole 521 on the stopper 52, and the wire rope 3 will not be lubricated.

[0069] When the two pulleys 61 are in self-lubricating working state, the maximum distance between their outer edges is 0.5mm. The radius of the arc grooves 612 on the wheel surfaces of the two pulleys 61 is the radius of the wire rope 3, and the wire rope 3 is located between the two arc grooves 612.

[0070] When the wire rope 3 moves, the two pulleys 61 will rotate due to friction, thus determining whether the wire rope 3 needs to be lubricated. At the same time, when the lubricated wire rope 3 extends, the pulleys 61 will not rotate due to the reduction of friction.

[0071] like Figure 11 , Figure 13 and Figure 14As shown, multiple strip-shaped protrusions 711 inside the sleeve 71 are respectively fixedly installed below the elastic plates 712, and the elastic plates 712 are inclined at 30°. The other end of the multiple elastic plates 712 is located between the adjacent rectangular protrusions 731 of the threaded cap 73 when the threaded rod (83) rotates in the opposite direction. The elastic plates 712 are used to convert the rotation of the threaded cap 73 into a vertically upward linear motion. The specific installation method is to connect them by welding.

[0072] When the wire rope 3 contracts, the rotating component 8 rotates continuously during the contraction process, causing the threaded cap 73 on the moving component 7 to move downwards and to the lowest end. The threaded cap 73 will then rotate and continuously compress the elastic sheet 712.

[0073] like Figure 15 As shown, the threaded cap 73 is provided with a plurality of rectangular protrusions 731 around its perimeter, and the bottom of the rectangular protrusions 731 is an inverted conical structure. The maximum diameter of the threaded cap 73 body is equal to the maximum diameter of the hollow cylinder 722 on the conical block 72.

[0074] As the threaded cap 73 moves upward, it will push the hollow cylinder 722 on the conical block 72 to move upward, causing the entire conical block 72 to move upward and causing the slider 63 on the trigger assembly 6 to slide outward.

[0075] like Figure 11 and Figure 12 As shown, the threaded rod 83 has a protruding block 831 radially arranged at the top and middle. The maximum diameter of the protruding block 831 is greater than the inner diameter of the threaded cap 73, and the maximum diameter of the protruding block 831 is smaller than the inner diameter of the hollow cylinder 722 on the conical block 72.

[0076] When the wire rope 3 is contracted, the threaded rod 83 will continue to rotate, causing the threaded cap 73 on the moving assembly 7 to move to the protrusion 831 at the top of the threaded rod 83, so that the threaded cap 73 will no longer move upward and will rotate with the threaded rod 83.

[0077] During operation, when the electric hoist is working, the control component first controls the electric hoist to start, and then the wire rope 3 will slowly extend from the rope reel 2, pass through the inside of the housing 4, and when passing through the inside of the housing 4, the wire rope 3 will first pass through the trigger component 6.

[0078] Due to the friction between the wire rope 3 and the pulley 61 on the trigger assembly 6, the wire rope 3 will rotate as it moves, causing the pulley 61 on the trigger assembly 6 to rotate. The pulley 61 will then rotate the shaft 62. As the pulley 61 rotates, the cylindrical protrusion 611 on the outer side of the pulley 61 will rotate along with it. When the cylindrical protrusion 611 rotates to the upper position, it will exert an upward pressure on the lubrication assembly 5, causing the movable column 53 on the lubrication assembly 5 to be subjected to upward pressure and move upward. This causes the movable column 53 to compress the compression spring 54 and drive the plug 52 to move upward. The fine hole 521 on the plug 52 will communicate with the round hole 515 on the rectangular groove 514 on the housing 51, so that the lubricating oil flows out through the fine hole 521 on the plug 52 and into the round hole 515 on the other side. It then flows out through the circular through hole 511 and lubricates the wire rope 3. When the cylindrical protrusion 611 on the pulley 61 rotates past the upper position, the movable column 53 on the lubrication assembly 5 will not be subjected to upward pressure.

[0079] At this time, the compression spring 54 on the movable column 53 will exert downward pressure on the movable column 53 due to elastic potential energy. As a result, the movable column 53 will drive the plug 52 to move downward in the rectangular groove 514. The round hole 515 on the rectangular groove 514 and the fine hole 521 on the plug 52 will be misaligned, so that the lubricating oil in the housing 51 will not flow out through the plug 52. As the pulley 61 continues to rotate, the cylindrical protrusion 611 on the pulley 61 will continue to exert upward pressure on the movable column 53 on the lubrication assembly 5, so that the lubricating oil in the housing 51 will flow out again and lubricate the wire rope 3 again, thus achieving lubrication of the wire rope 3.

[0080] During this process, the power of the electric hoist will be transmitted from the rope reel 2 to the rotating component 8, causing the bevel gear 81 on the rotating component 8 to rotate. The bevel gear 81 transmits the power to the drive shaft 82, which in turn drives the threaded rod 83 to rotate in the forward direction. Since the threaded cap 73 on the moving component 7 is always on the protrusion 831 at the bottom of the threaded rod 83, the threaded cap 73 will rotate with the threaded rod 83. During the rotation, the rectangular protrusions 731 around the threaded cap 73 will continuously apply pressure to the elastic plate 712 on the inner wall of the bottom of the sleeve 71, causing the elastic plate 712 to be compressed.

[0081] When the wire rope 3 retracts, the control component controls the electric hoist body 1 to rotate in the reverse direction. During this rotation, the power on the rope reel 2 is transmitted to the rotating component 8, causing the rotating component 8 to start. The bevel gear 81 on the rotating component 8 rotates, and the bevel gear 81 transmits power to the drive shaft 82. The drive shaft 82 drives the threaded rod 83 to rotate in the reverse direction. Because the threaded rod 83 rotates in the reverse direction, the threaded cap 73 on the moving component 7 rotates in the reverse direction. Since the elastic plate 712 is engaged between the rectangular protrusions 731 around the threaded cap 73, the rotation of the threaded cap 73 is restricted. 73 will move upwards, and the rectangular protrusions 731 around the threaded cap 73 will move to the strip protrusions 711 on the inner wall of the sleeve 71 and continue to move upwards. During the upward movement, the top of the threaded cap 73 will contact the hollow cylinder 722 on the conical block 72 and push the conical block 72 to move upwards. When the threaded cap 73 moves to the top, since the rectangular protrusions 731 around the threaded cap 73 disengage from the strip protrusions 711 on the inner wall of the sleeve 71, it will continue to rotate with the threaded rod 83 on the rotating assembly 8 and will no longer move upwards.

[0082] When the conical block 72 moves upward, it will cause the slider 63 on the trigger assembly 6 to apply outward pressure, causing the slider 63 to move outward. During the movement, the slider 63 will compress the pressure spring 64. The slider 63 drives the rotating shaft 62 and the pulley 61 to move outward, increasing the distance between the two pulleys 61 and the wire rope 3. When the wire rope 3 contracts, the lubrication assembly 5 will not be triggered to start.

[0083] When the electric hoist body 1 rotates forward, extending the wire rope 3, the bevel gear 81 on the rotating assembly 8 rotates. The bevel gear 81 transmits power to the drive shaft 82, which in turn drives the threaded rod 83 to rotate forward. This causes the threaded cap 73 on the moving assembly 7 to rotate forward. Due to its own weight, the rectangular protrusions 731 around the threaded cap 73 move to the space between the strip-shaped protrusions 711 on the inner wall of the sleeve 71, causing the threaded cap 73 to move downward. The conical block 72, due to its own weight, ... The elastic potential energy of the pressure springs 64 on both sides of the slider 63 on the trigger assembly 6 will cause the cone block 72 to move downward and return to its original position. When the threaded cap 73 moves to the bottom, the rectangular protrusions 731 around the threaded cap 73 will disengage from the strip protrusions 711 on the inner wall of the sleeve 71 and enter between the elastic plates 712 on the bottom inner wall of the sleeve 71, causing the elastic plates 712 to be compressed. At this time, the threaded cap 73 will continue to rotate with the threaded rod 83 on the rotating assembly 8 and will no longer move downward.

[0084] Example 2: Unlike Example 1, when lubricating the entire wire rope 3 of the electric hoist, the wire rope 3 needs to be fully extended. As the wire rope 3 slowly extends, the friction between the wire rope 3 and the pulley 61 on the trigger assembly 6 will cause the pulley 61 on the trigger assembly 6 to rotate, thereby applying pressure to the movable column 53 on the lubrication assembly 5. This causes the movable column 53 to move, driving the plug 52 to move. The lubricating oil inside the housing 51 will flow out through the plug 52, thereby lubricating the wire rope 3. This ensures that the entire wire rope 3 can be lubricated, rather than just the working section of the wire rope 3. This prevents the non-working section of the wire rope 3 from rusting and being damaged due to long-term disuse.

[0085] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A self-lubricating electric hoist, comprising an electric hoist body (1), a rope winding device (2), a steel wire rope (3), a machine shell (4), a lubricating assembly (5), a triggering assembly (6), a moving assembly (7), a rotating assembly (8) and a control assembly; characterized in that: The electric hoist body (1) bottom fixed installation has the machine shell (4), the machine shell (4) bottom fixed installation has the rope winding device (2), the steel wire rope (3) both ends are located in electric hoist body (1) and the rope winding device (2) inside, the machine shell (4) inside fixed installation has lubricating assembly (5), the lubricating assembly (5) is used to through the extension of steel wire rope (3), and through trigger assembly (6) makes lubricating oil intermittently from the tank, and is sprayed on steel wire rope (3);The machine shell (4) inside fixed installation has trigger assembly (6), and the trigger assembly (6) is located below lubricating assembly (5), the trigger assembly (6) is triggered by the friction force generated when the relative motion of steel wire rope (3) and it, lubricating assembly (5) work, make lubricating oil be sprayed on steel wire rope (3);The moving assembly (7) fixed installation is in the machine shell (4) both sides inner wall, and with the trigger assembly (6) is in the same horizontal position, the moving assembly (7) is used for through the contraction of steel wire rope (3), make the distance between trigger assembly (6) and steel wire rope (3) increase;The rotating assembly (8) fixed installation is in the machine shell (4) inner bottom, and the rotating assembly (8) is located below moving assembly (7), the rotating assembly (8) is used for the power on the rope winding device (2), is transmitted to moving assembly (7), and through the mutual cooperation of rotating assembly (8) and moving assembly (7), the clockwise and counterclockwise circular motion is converted into vertical straight line motion;Electric hoist body (1) and control assembly electric connection; The trigger assembly (6) includes pulley (61), shaft (62), slider (63) and pressure spring (64);Two the pulley (61) is rotatably mounted on two the shaft (62), the pulley (61) is used for by the friction force between the pulley (61) and steel wire rope (3), make the pulley (61) rotate, so as to determine whether the steel wire rope (3) has lubricating oil;Two the pulley (61) outside is provided with cylindrical convex (611), the cylindrical convex (611) is used for when the pulley (61) rotates by friction, along with the pulley (61) rotation, and trigger lubricating assembly (5) start, spray lubricating oil to steel wire rope (3);Two the pulley (61) wheel surface is respectively provided with arc groove (612), and two the pulley (61) wheel surface arc groove (612) is located on the same straight line, the arc groove (612) is used for placing steel wire rope (3) in two arc grooves (612), and through the friction force between steel wire rope (3) and arc groove (612), make steel wire rope (3) in the process of movement, drive the pulley (61) rotation;Two the shaft (62) both ends rotatably mounted slider (63), four the slider (63) outside fixed installation has pressure spring (64) respectively. When the steel wire rope (3) is stretched out, the pulley (61) on the trigger assembly (6) will be rotated in the process of the steel wire rope (3) moving due to the friction between the steel wire rope (3) and the pulley (61) on the trigger assembly (6), and the cylindrical protrusion (611) outside the pulley (61) will rotate with the pulley (61) in the process of the pulley (61) and the rotating shaft (62) rotating, and the cylindrical protrusion (611) will apply an upward pressure to the lubricating assembly (5) at the same time, so that the lubricating assembly (5) is started.

2. A self-lubricating electric hoist according to claim 1, characterized in that: The lubricating assembly (5) comprises a box body (51), a plug (52), a movable column (53) and a compression spring (54); the box body (51) is fixedly installed inside the machine shell (4), and the top of the box body (51) is fixedly connected with the top of the machine shell (4); a circular through hole (511) with a diameter slightly larger than the diameter of the steel wire rope (3) is formed at the center position of the box body (51), a rectangular cavity (512) is formed at the top of the box body (51), two circular grooves (513) are formed at the bottom of the box body (51), and the two circular grooves (513) are located on the diagonals, respectively, a rectangular groove (514) is formed at the top of the circular groove (513), and symmetric circular holes (515) are formed at the two sides of the rectangular groove (514), and the two circular holes (515) penetrate the circular through hole (511) and the inner wall of the box body (51), respectively; the box body (51) is fixedly installed inside the machine shell (4), the plug (52) is movably installed in the rectangular groove (514) at the bottom of the box body (51), the plug (52) is used to control the outflow of lubricating oil through vertical linear motion; the movable column (53) is fixedly installed at the bottom of the plug (52), the movable column (53) is located in the circular groove (513) at the bottom of the box body (51), and the compression spring (54) is fixedly installed at the top end of the movable column (53), the compression spring (54) is used to convert the elastic potential energy into tension through the elastic potential energy, and pulls the plug (52) to reset.

3. The self-lubricating electric hoist according to claim 1, characterized in that: The moving assembly (7) comprises a sleeve (71), a tapered block (72) and a threaded cap (73); the inner wall of the sleeve (71) is provided with a plurality of strip-shaped protrusions (711) along the axis, and the top ends of the strip-shaped protrusions (711) are tapered structures, which are used to limit the rotation of the threaded cap (73) and make the threaded cap (73) move along the axis, and the tapered structure is designed to make the threaded cap (73) quickly enter the inside of the sleeve (71) by its own gravity and rotation; two sleeves (71) are fixedly installed on the inner side walls of the shell (4), and the two sleeves (71) are located below the center positions between the two sliders (63); the tapered blocks (72) are slidably installed in the two sleeves (71), and the bottoms of the two tapered blocks (72) are provided with circular grooves (721), and the two circular grooves (721) are provided with hollow cylinders (722); and the threaded caps (73) are rotatably installed at the bottoms of the two tapered blocks (72).

4. The self-lubricating electric hoist according to claim 1, characterized in that: The rotating assembly (8) comprises bevel gears (81), transmission shafts (82) and threaded rods (83); two bevel gears (81) are rotatably installed in the rope winding device (2), which is used to transmit power to the transmission shaft (82) in the rope winding device (2), and convert the circular motion into vertical linear motion through the forward rotation or reverse rotation of the rope winding device (2), so that the moving assembly (7) moves; the transmission shafts (82) are fixedly installed on the two bevel gears (81), and the threaded rods (83) are fixedly installed on the two transmission shafts (82), which are used to convert the circular motion into vertical linear motion.

5. The self-lubricating electric hoist according to claim 2, characterized in that: The two spacers (52) are provided with holes (521), and the two spacers (52) are fixedly installed with sealing rubber pads (522) on the two sides, which are "8" shaped structures, and the holes (521) are located below the "8" shaped structures, which are used to seal the lubricating oil and ensure that the lubricating oil does not flow out through the gap between the spacers (52) when the spacers (52) are opened or closed.

6. The self-lubricating electric hoist according to claim 1, characterized in that: The maximum distance between the outer edges of the two pulleys (61) in the self-lubricating working state is 0.5mm, the radius of the circular groove (612) on the surface of the pulley (61) is the radius of the steel wire rope (3), and the steel wire rope (3) is located between the two circular grooves (612).

7. The self-lubricating electric hoist according to claim 3, characterized in that: The bottoms of the plurality of strip-shaped protrusions (711) in the sleeve (71) are fixedly installed with elastic sheets (712), which are inclined at an angle of 30°, and the other ends of the elastic sheets (712) are located between the adjacent rectangular protrusions (731) of the threaded cap (73) when the threaded rod (83) is reversely rotated, which are used to convert the rotation of the threaded cap (73) into vertical upward linear motion.

8. The self-lubricating electric hoist according to claim 3, characterized in that: The threaded cap (73) is provided with a plurality of rectangular protrusions (731) around it, and the bottom end of the rectangular protrusions (731) is inverted conical structure, the maximum diameter of the threaded cap (73) body is equal to the maximum diameter of the hollow cylinder (722) on the conical block (72).

9. The self-lubricating electric hoist according to claim 4, characterized in that: The threaded rod (83) is provided with protrusions (831) at the top and middle, the maximum diameter of the protrusions (831) is greater than the inner diameter of the threaded cap (73), and the maximum diameter of the protrusions (831) is less than the inner diameter of the hollow cylinder (722) on the conical block (72).

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