Lubricating device for steel wire rope of crane

Abstract

The utility model relates to the technical field of cranes, in particular to a crane steel wire rope lubricating device which comprises a lubricating frame. A vertically-through lubricating opening is formed in the middle of the lubricating frame, a plurality of ball grooves are formed in the two sides of the inner wall of the lubricating opening, lubricating balls are rotationally connected into the ball grooves, oil storage cavities, pressure relief cavities and a plurality of oil outlet channels are formed in the left end and the right end in the lubricating frame, the pressure relief cavities are located on the outer sides of the oil storage cavities, and partition plates are arranged between the oil storage cavities and the adjacent pressure relief cavities. The plurality of ball grooves are communicated with the plurality of oil outlet channels one by one; the steel wire rope is lubricated through the lubricating balls, the lubricating effect of the steel wire rope is guaranteed, after the steel wire rope is lubricated, the oil outlet communicated between the oil outlet channel and the oil storage cavity is covered with the sealing cover, lubricating oil in the oil storage cavity is prevented from entering the oil outlet channel and the ball grooves all the time, and the lubricating effect of the steel wire rope is guaranteed. Therefore, waste of the lubricating oil is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, in particular to a lubricating device for a crane steel wire rope. Background Technique

[0002] The crane is an important device in the production of the metallurgical industry, and its safe operation is an important part of our daily equipment management. And the key hoisting steel wire rope is a crucial part in the hoisting system of the metallurgical crane. Therefore, the maintenance and upkeep of the steel wire rope are relatively very important. So, it is often necessary to lubricate the steel wire rope to reduce its wear.

[0003] Referring to a self-lubricating device for a crane steel wire rope disclosed in the Chinese patent authorization announcement number CN214580359U, which belongs to the field of cranes, including a fixing plate. The surface of the fixing plate is provided with a first through hole, and the inner wall of the first through hole is equidistantly provided with semi-circular grooves. The inside of the fixing plate is symmetrically provided with first cavities, and the inner walls of the first cavities are slidably installed with pressing plates. The inside of the fixing plate is symmetrically provided with second cavities, and the inner walls of the second cavities are symmetrically provided with chutes. The inner walls of the chutes are fixedly installed with electromagnets, and the inner walls of the chutes are slidably installed with metal plates. It generates magnetic force through the energization of the electromagnet to magnetically adsorb the metal plate, so that the connecting rod pushes the pressing plate to extrude the lubricating oil inside the first cavity, and under the action of structures such as round holes and ball bearings, lubricates the steel wire rope. Through the action of the second spring, the sealing plug is kept stable to avoid the detachment of the sealing plug when the lubricating oil is extruded and moves, and the ejector rod can be pulled to drive the sealing plug to disengage from the oil injection hole, which is convenient for the addition of lubricating oil;

[0004] By referring to the above comparative documents, it can be seen that the prior art still has the following deficiencies. When lubricating the steel wire rope through the ball bearing, lubricating oil is injected into the semi-circular groove through the round hole, and then the ball bearing is lubricated through the semi-circular groove, and finally the steel wire rope is lubricated through the ball bearing. However, the round hole and the first cavity are in a long-term interconnected state, so the lubricating oil in the first cavity will always be injected into the round hole and the semi-circular groove, so the steel wire rope will always be lubricated. Since the steel wire rope does not need to be continuously lubricated after lubrication, continuously lubricating the steel wire rope with lubricating oil will cause serious waste of lubricating oil. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a lubricating device for a crane steel wire rope to solve problems such as serious waste of lubricating oil.

[0006] To achieve the above purposes, the utility model is realized through the following technical solutions: A lubricating device for a crane steel wire rope, including a lubricating frame;

[0007] A lubricating frame has a lubricating port that penetrates vertically through the middle. On both sides of the inner wall of the lubricating port, a number of ball grooves are provided. Lubricating balls are rotatably connected in the ball grooves. On both the left and right ends inside the lubricating frame, an oil storage chamber, a pressure relief chamber, and a number of oil outlet channels are provided. The pressure relief chamber is located outside the oil storage chamber. A partition is provided between each oil storage chamber and the adjacent pressure relief chamber. The number of ball grooves is in one-to-one communication with the number of oil outlet channels. An oil outlet is connected between each oil outlet channel and the adjacent oil storage chamber. A sealing cover that covers the oil outlet is provided in each oil outlet channel;

[0008] A piston plate is fitted in each oil storage chamber. A push rod is fixed between each sealing cover and the adjacent piston plate. A push-pull drive assembly is provided outside each piston plate.

[0009] Preferably, pressure relief ports and internal thread oil injection holes are provided on both sides of the upper end of the lubricating frame. The pressure relief ports communicate with the adjacent pressure relief chambers.

[0010] Preferably, the partition is fixed inside the lubricating frame, and a number of pressure relief holes are provided on the partition. The pressure relief chambers communicate with the oil storage chambers through the pressure relief holes.

[0011] Preferably, the internal thread oil injection holes communicate with the adjacent oil storage chambers. Threaded sealing plugs are provided on the internal thread oil injection holes, and the threaded sealing plugs are in threaded match with the internal thread oil injection holes.

[0012] Preferably, the push-pull drive assembly includes a forward and reverse motor, a lead screw, a push plate, and a piston rod. The forward and reverse motors are fixed on the inner side walls of the pressure relief chambers. One end of the lead screw is connected to the power end of the forward and reverse motor, and the other end of the lead screw is rotatably connected to the other inner side wall of the pressure relief chamber.

[0013] Preferably, the push plates are threadedly sleeved on the periphery of the lead screw. The piston rod is fixed between the adjacent piston plate and the push plate, and the piston rod slidably penetrates through the adjacent partition.

[0014] The present utility model provides a crane wire rope lubricating device, which has the following beneficial effects:

[0015] By providing a plurality of lubricating balls to lubricate the wire rope, it is beneficial to ensure the lubrication effect of the wire rope. Moreover, after the wire rope is lubricated, the oil outlet connected between the oil outlet channel and the oil storage chamber is covered by the sealing cover, which is beneficial to prevent the lubricating oil in the oil storage chamber from continuously entering the oil outlet channel and the ball groove. Therefore, it is beneficial to reduce the waste of lubricating oil. And pressure relief holes, pressure relief chambers, and pressure relief ports are provided, which is beneficial to ensure the smoothness of the piston plate when moving in the oil storage chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2This is a partially enlarged structural schematic diagram of part A of the utility model;

[0018] Figure 3 This is a schematic diagram of the overall lubrication working structure of the utility model.

[0019] Figures 1-3 Wherein: lubricating frame 1, oil storage cavity 2, oil outlet channel 3, ball groove 4, lubricating port 5, lubricating ball 6, internal thread oil injection hole 7, thread sealing plug 8, piston plate 9, push rod 10, piston rod 11, push plate 12, forward and reverse motor 13, lead screw 14, partition 15, oil outlet 16, sealing cover 17, pressure relief cavity 18, pressure relief port 19, pressure relief hole 20. Specific implementation manner

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-3 , the present utility model provides a technical solution: a crane wire rope lubricating device, including a lubricating frame 1, a lubricating port 5 penetrating up and down is opened in the middle of the lubricating frame 1, a plurality of ball grooves 4 are opened on both sides of the inner wall of the lubricating port 5, lubricating balls 6 are rotatably connected in the ball grooves 4, oil storage cavities 2, pressure relief cavities 18 and a plurality of oil outlet channels 3 are opened at both the left and right ends inside the lubricating frame 1, and the pressure relief cavity 18 is located outside the oil storage cavity 2. A partition 15 is provided between each oil storage cavity 2 and the adjacent pressure relief cavity 18. The plurality of ball grooves 4 are in one-to-one communication with the plurality of oil outlet channels 3. An oil outlet 16 is communicated between each oil outlet channel 3 and the adjacent oil storage cavity 2. A sealing cover 17 covering the oil outlet 16 is provided in each oil outlet channel 3. A piston plate 9 is matched in each oil storage cavity 2. A push rod 10 is fixed between each sealing cover 17 and the adjacent piston plate 9. A push-pull driving assembly is provided outside each piston plate 9. The push-pull driving assembly includes a forward and reverse motor 13, a lead screw 14, a push plate 12 and a piston rod 11. The forward and reverse motors 13 are fixed on the inner side walls of the pressure relief cavities 18. One end of the lead screw 14 is connected to the power end of the forward and reverse motor 13, and the other end of the lead screw 14 is rotatably connected to the other inner side wall of the pressure relief cavity 18. The push plates 12 are threadedly sleeved on the periphery of the lead screw 14. The piston rod 11 is fixed between the adjacent piston plate 9 and the push plate 12, and the piston rod 11 slidably penetrates through the adjacent partition 15.

[0022] When lubricating the wire rope through this lubrication device, with the wire rope of the crane passing through the lubrication port 5 and the lubricating balls 6 in contact with the surface of the wire rope, the forward and reverse motor 13 works to drive the lead screw 14 to rotate forward. The lead screw 14 will drive the push plate 12, the piston rod 11, the piston plate 9, the push rod 10 and the sealing cover 17 to move towards the wire rope. At this time, the sealing cover 17 opens at the oil outlet 16. Then the piston plate 9 will push the lubricating oil in the oil storage cavity 2, and the lubricating oil will enter the oil outlet passage 3 and the ball groove 4. The lubricating oil in the ball groove 4 will adhere to the lubricating balls 6. When the wire rope moves along the lubricating balls 6, the lubricating balls 6 rotate. Therefore, the lubricating balls 6 will lubricate the wire rope. So, by arranging multiple lubricating balls 6 to lubricate the wire rope, it is beneficial to ensure the lubrication effect of the wire rope.

[0023] In this embodiment, the forward and reverse motors 13 are both fixed on the inner side wall of the pressure relief cavity 18. One end of the lead screw 14 is connected to the power end of the forward and reverse motor 13, and the other end of the lead screw 14 is rotatably connected to the other inner side wall of the pressure relief cavity 18. The push plates 12 are all threadedly sleeved on the periphery of the lead screw 14, and the piston rods 11 are fixed between the adjacent piston plates 9 and the push plates 12.

[0024] After the wire rope is lubricated, the forward and reverse motor 13 works to drive the lead screw 14 to rotate reversely. The lead screw 14 will drive the push plate 12, the piston rod 11, the piston plate 9, the push rod 10 and the sealing cover 17 to move away from the wire rope until the sealing cover 17 covers the oil outlet 16. So, the oil outlet 16 where the oil outlet passage 3 communicates with the oil storage cavity 2 is covered by the sealing cover 17, which is beneficial to prevent the lubricating oil in the oil storage cavity 2 from continuously entering the oil outlet passage 3 and the ball groove 4. Therefore, it is beneficial to reduce the waste of lubricating oil.

[0025] In this embodiment, pressure relief ports 19 and internal thread oil injection holes 7 are opened on both sides of the upper end of the lubrication frame 1. The pressure relief ports 19 communicate with the adjacent pressure relief cavities 18. The partition plate 15 is fixed in the lubrication frame 1, and a number of pressure relief holes 20 are opened on the partition plate 15. The pressure relief cavities 18 communicate with the oil storage cavity 2 through the pressure relief holes 20.

[0026] And the pressure relief holes 20, the pressure relief cavities 18 and the pressure relief ports 19 are provided. When the piston plate 9 moves in the oil storage cavity 2, the pressure relief holes 20, the pressure relief cavities 18 and the pressure relief ports 19 will discharge the air pressure outside the lubrication frame 1, which is beneficial to ensure the smoothness of the piston plate 9 when moving in the oil storage cavity 2.

[0027] In this embodiment, the internal thread oil injection holes 7 communicate with the adjacent oil storage cavity 2, and threaded sealing plugs 8 are covered on the internal thread oil injection holes 7, and the threaded sealing plugs 8 are threadedly matched with the internal thread oil injection holes 7.

[0028] By covering the internal-threaded oil injection hole 7 with the threaded sealing plug 8, and threading the threaded sealing plug 8 onto the internal-threaded oil injection hole 7, when the piston plate 9 moves within the oil storage chamber 2, it is possible to prevent the threaded sealing plug 8 from being pushed out of the internal-threaded oil injection hole 7 due to excessive air pressure. Moreover, by manually opening the threaded sealing plug 8, lubricating oil can be conveniently added into the oil storage chamber 2 through the internal-threaded oil injection hole 7.

[0029] Working principle:

[0030] When lubricating the wire rope with this lubrication device, the forward and reverse motor 13 works to drive the lead screw 14 to rotate forward. The lead screw 14 will drive the push plate 12, piston rod 11, piston plate 9, push rod 10 and sealing cover 17 to move towards the wire rope. At this time, the sealing cover 17 opens at the oil outlet 16. Then, the piston plate 9 will push the lubricating oil in the oil storage chamber 2. The lubricating oil will enter the oil outlet passage 3 and the ball groove 4. The lubricating oil in the ball groove 4 will adhere to the lubricating balls 6. When the wire rope moves along the lubricating balls 6, the lubricating balls 6 rotate. Therefore, the lubricating balls 6 will lubricate the wire rope. After the wire rope is lubricated, the forward and reverse motor 13 works to drive the lead screw 14 to rotate in reverse. The lead screw 14 will drive the push plate 12, piston rod 11, piston plate 9, push rod 10 and sealing cover 17 to move away from the wire rope until the sealing cover 17 covers the oil outlet 16.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A crane wire rope lubrication device, comprising a lubrication rack (1), characterized in that: A lubrication port (5) extending vertically is provided in the middle of the lubrication rack (1), a plurality of ball grooves (4) are provided on both sides of the inner wall of the lubrication port (5), and lubrication balls (6) are rotatably connected in the ball grooves (4). An oil storage chamber (2), a pressure relief chamber (18) and a plurality of oil outlet channels (3) are provided at the left and right ends of the lubrication rack (1), and the pressure relief chamber (18) is located outside the oil storage chamber (2). A partition plate (15) is provided between each of the oil storage chambers (2) and the adjacent pressure relief chamber (18). A plurality of the ball grooves (4) are connected to a plurality of oil outlet channels (3) one by one. An oil outlet (16) is provided between each of the oil outlet channels (3) and the adjacent oil storage chambers (2), and a sealing cover (17) covering the oil outlet (16) is provided in each of the oil outlet channels (3); The oil storage chamber (2) is matched with a piston plate (9), a push rod (10) is fixed between the sealing cover (17) and the adjacent piston plate (9), and a push-pull drive component is provided outside the piston plate (9).

2. A crane wire rope lubrication device according to claim 1, characterized in that: Pressure relief ports (19) and internally threaded oil filling holes (7) are provided on both sides of the upper end of the lubrication rack (1), and the pressure relief ports (19) are communicated with adjacent pressure relief chambers (18).

3. A crane wire rope lubrication device according to claim 2, characterized in that: The partition plate (15) is fixed in the lubrication rack (1), and a plurality of pressure relief holes (20) are formed on the partition plate (15), and the pressure relief chamber (18) is connected to the oil storage chamber (2) through the pressure relief holes (20).

4. A crane wire rope lubrication device according to claim 2, characterized in that: The internally threaded oil filling holes (7) are all in communication with the adjacent oil storage chamber (2), and the internally threaded oil filling holes (7) are all covered with threaded sealing plugs (8), and the threaded sealing plugs (8) are thread-matched with the internally threaded oil filling holes (7).

5. The crane wire rope lubrication device according to claim 1, characterized in that: The push-pull drive assembly comprises a forward and reverse motor (13), a screw rod (14), a push plate (12) and a piston rod (11); the forward and reverse motor (13) is fixed to the inner wall of the pressure relief chamber (18); one end of the screw rod (14) is connected to the power end of the forward and reverse motor (13); and the other end of the screw rod (14) is rotatably connected to the other inner wall of the pressure relief chamber (18).

6. A crane wire rope lubrication device according to claim 5, characterized in that: The push plates (12) are all threadedly sleeved on the outer periphery of the screw rod (14); the piston rod (11) is fixed between the adjacent piston plates (9) and the push plates (12); and the piston rod (11) slides through the adjacent partition plates (15).

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