Pulley block for crane

Abstract

The utility model relates to a pulley block for a crane, which is characterized by comprising a mounting bracket; the rotating wheels are rotationally connected to the mounting bracket; the traction rope penetrates through the surface of the rotating wheel; the lubricating and oiling assembly is arranged on the mounting bracket and comprises an oil tank which is mounted on the mounting bracket and is used for storing lubricating oil, an oil pipe of which one end extends into the oil tank and the other end is positioned above the rotating wheel, and a plurality of oil outlet holes which are formed in the oil pipe and are positioned right above the rotating wheel; lubricating oil is sprayed into the contact portion of the rotating wheel and the traction rope through the oil outlet hole. And the hook is connected with the mounting bracket and is positioned below the rotating wheel. Compared with the prior art, the pulley and the steel wire rope can be maintained easily, abrasion is reduced, and safety accidents are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pulley blocks, in particular to a pulley block for a crane. Background Art

[0002] A pulley block is a mechanical device composed of multiple pulleys. It can change the direction of the applied force or increase the effect of the force, and is widely used in fields such as lifting, transportation, and lifting heavy objects. The basic principle of the pulley block is to change the direction of the force through a fixed pulley and save force through a movable pulley. When used in combination, it can both save force and change the direction of the force. The components of the pulley block include pulleys, ropes, brackets, and hooks or other connecting parts. It can be divided into a simple pulley block and a compound pulley block. The simple pulley block consists of one or more pulleys, and the compound pulley block is composed of multiple pulleys combined. When using a pulley block, safety specifications must be observed to ensure safe operation.

[0003] Patent Publication No. CN217838057U discloses a crane hook pulley block, which relates to the technical field of cranes. Specifically, it includes a pulley box. A fixed block is fixedly connected above the pulley box. A chute is opened inside the fixed block. A slider is slidably connected inside the chute. A first spring is fixedly connected inside the chute. One end of the first spring is fixedly connected to one side of the slider. A first rotating shaft is rotatably connected to one side of the slider. A limiting wheel is rotatably connected to the outer surface of the first rotating shaft. Although it can achieve the purpose of preventing the steel wire rope from slipping out of the pulley, it is not convenient to maintain the pulley and the steel wire rope. If the pulley block is not maintained regularly, the friction between the pulley and the steel wire rope will increase. Lack of lubrication will also accelerate the wear of the pulley and the steel wire rope, and even cause pulley block failures and safety accidents.

[0004] The traditional lubrication method for steel wire ropes uses the method of manually applying lubricating grease. When applying, the crane needs to be shut down for treatment, and the application is uneven, time-consuming and laborious, reducing the use efficiency of the crane. Patent Publication No. CN202852377U discloses a lubricating and oiling device for the steel wire rope of a bridge crane, including an installation bracket, an oil tank, an oil pipe, and a lubricating oil wheel. The lubricating oil wheels are fixed at both ends of the installation bracket. The oil tank is connected to the lubricating oil wheels through the oil pipe. A plurality of oil outlet holes are provided on the working surface of the lubricating oil wheel and a soft material layer is coated on the working surface. The device is arranged above the fixed pulley of the bridge crane through the installation bracket. The lubricating oil wheel is in direct contact with the steel wire rope wound around the fixed pulley and rotates as the steel wire rope moves. After long-term use, wear is likely to occur between the lubricating oil wheel and the steel wire rope, and the movement trajectory of the steel wire rope will be restricted. Summary of the Utility Model

[0005] The purpose of the present utility model is to overcome the defects existing in the above-mentioned prior art and provide a pulley block for a crane, which is beneficial to the maintenance of pulleys and wire ropes, reduces wear, and reduces the occurrence of safety accidents.

[0006] The purpose of the present utility model can be achieved through the following technical solutions:

[0007] A pulley block for a crane, comprising:

[0008] An installation bracket;

[0009] A plurality of runner wheels rotatably connected to the installation bracket;

[0010] A traction rope wound around the outer surface of the runner wheels;

[0011] A lubricating and oiling assembly arranged on the installation bracket, which includes an oil tank for storing lubricating oil installed on the installation bracket, an oil pipe with one end extending into the oil tank and the other end located above the runner wheels, and a plurality of oil outlet holes opened on the oil pipe and located directly above the runner wheels. The oil outlet holes are configured to spray lubricating oil into the contact part between the runner wheels and the traction rope, play a maintenance role for the traction rope and the runner wheels, reduce friction, ensure their good use state, and improve their service life;

[0012] And a hook connected to the installation bracket and located below the runner wheels.

[0013] Furthermore, the installation bracket includes a plurality of rows of vertically arranged installation plates distributed side by side. There is a space for placing the runner wheels between adjacent vertically arranged installation plates, and the installation bracket can support the other components.

[0014] Still further, the runner wheels are connected to the vertically arranged installation plates through rotating shafts. The rotating shafts vertically pass through the centers of the vertically arranged installation plates and the runner wheels, enabling the runner wheels to rotate around the rotating shafts.

[0015] Further, the lubricating and oiling assembly further includes an oil transfer pump located inside the oil tank and connected to the oil pipe.

[0016] Still further, the oil pipe includes:

[0017] A first pipe connected to the oil transfer pump and outputting the lubricating oil in the oil tank;

[0018] And a second pipe with one end connected to the first pipe and the other end connected to the installation bracket. The second pipe is located above the runner wheels. The oil outlet holes are opened on the second pipe and are located directly above the runner wheels. The lubricating oil inside can accurately fall into the contact part between the runner wheels and the traction rope, playing a sufficient lubricating role for it.

[0019] Further, a liquid level gauge for testing the height of the lubricating oil level in the fuel tank is installed on the fuel tank, facilitating the viewing of the oil quantity inside the fuel tank.

[0020] Further, a first through hole for inputting lubricating oil into the fuel tank is provided in the upper part of the fuel tank;

[0021] A second through hole for discharging the lubricating oil in the fuel tank is provided in the lower part of the fuel tank;

[0022] A first sealing head is threadedly connected in the first through hole;

[0023] A second sealing head is threadedly connected in the second through hole.

[0024] Furthermore, the first through hole is located on the upper surface of the fuel tank, and the second through hole is located on the lower surface of the fuel tank.

[0025] Further, a cleaning assembly is provided below the runner, which is located above the hook. The cleaning assembly includes:

[0026] A bottom plate connected to the mounting bracket;

[0027] And a number of bristles connected to the upper surface of the bottom plate and in contact with the outer surface of the towing rope. The bristles are in contact with the towing rope, which can play a role in cleaning the dirt attached to the surface of the towing rope, maintain the towing rope and the runner, reduce friction, ensure its good use state, and improve its service life.

[0028] Furthermore, the inside of the bottom plate is hollow, and a number of third through holes are provided on the surface of the bottom plate. The third through holes are located between several adjacent bristles and do not contact them;

[0029] A fourth through hole is provided at the bottom or side of the bottom plate, and a third sealing head is threadedly connected in the fourth through hole. It can allow the excess lubricating oil dripping from the oil outlet hole to enter the inside of the bottom plate through the third through hole, preventing the excess lubricating oil from dripping to other places and causing pollution.

[0030] Further, a connecting frame is connected to the top of the hook, and the connecting frame is rotatably connected to the mounting bracket through a hanging rod, so that the goods hung on the hook can be kept balanced when rising or falling, which is convenient to use.

[0031] Further, the towing rope is a steel wire rope.

[0032] Compared with the prior art, the present utility model has the following advantages:

[0033] (1) The utility model uses a lubricating and refueling component connected to the mounting bracket, stores lubricating oil in the fuel tank, pumps the lubricating oil through an oil pump, and transports the lubricating oil through an oil pipe. The lubricating oil can be sprayed from the oil outlet hole to the contact part between the runner and the towing rope, playing a lubricating role for the runner and the steel wire rope. Moreover, the lubricating and refueling component does not directly contact the runner and the towing rope, ensuring its good use state and improving the reliability of the pulley block. And it can achieve precise lubrication, neither easily causing waste of lubricating oil nor making the on-site working environment dirtier, messier, and greasier.

[0034] (2) The utility model is provided with a cleaning component. When in use, the brush bristles can contact the surface of the towing rope to clean the dirt attached to the surface of the towing rope. While keeping the towing rope clean and tidy, it can reduce the friction between the towing rope and the runner. At the same time, it can evenly apply the lubricating oil sprayed by the lubricating and refueling component and wipe off the excess lubricating oil for subsequent maintenance of the towing rope.

[0035] (3) The bottom plate of the cleaning component of the utility model is hollow inside. A number of third through holes are provided on the surface of the bottom plate. A fourth through hole is provided at the bottom or side of the bottom plate. A third sealing head is threadedly connected to the fourth through hole. The excess lubricating oil dripping from the oil outlet hole enters the inside of the bottom plate through the third through hole, preventing the excess lubricating oil from dripping to other places and causing pollution, thus making the on-site working environment dirtier, messier, and greasier. In addition, the collected lubricating oil can be reused. Description of the Drawings

[0036] Figure 1 Structural schematic diagram of the pulley block shown in Embodiment 1;

[0037] Figure 2 Structural schematic diagram of the lubricating and refueling component shown in Embodiment 1;

[0038] Figure 3 Internal structural schematic diagram of the fuel tank shown in Embodiment 1;

[0039] Figure 4 Structural schematic diagram of the pulley block shown in Embodiment 2;

[0040] Figure 5 Structural schematic diagram of the cleaning component shown in Embodiment 2;

[0041] Figure 6 Structural schematic diagram of the cleaning component shown in Embodiment 3.

[0042] Explanation of the marks in the figure:

[0043] 1 - Mounting bracket, 11 - Vertical mounting plate, 12 - Rotating shaft, 13 - Hanging rod;

[0044] 2 - runner;

[0045] 3 - towing rope;

[0046] 4 - lubricating and refueling assembly, 41 - fuel tank, 42 - oil pipe, 421 - oil outlet hole, 422 - first pipe, 423 - second pipe, 43 - fuel pump, 44 - liquid level gauge, 45 - first through hole, 451 - first sealing head, 46 - second through hole, 461 - second sealing head;

[0047] 5 - hook;

[0048] 6 - cleaning assembly, 61 - bottom plate, 611 - third through hole, 612 - fourth through hole, 613 - third sealing head, 62 - brush bristles;

[0049] 7 - connecting frame. Detailed implementation mode

[0050] The present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiments are implemented on the premise of the technical solution of the present utility model, and detailed implementation manners and specific operation processes are given. However, the protection scope of the present utility model is not limited to the following embodiments. In the following embodiments or implementation manners, if there is no specifically described functional component or structure, it indicates that they are all conventional components or conventional structures adopted in the art to achieve the corresponding functions.

[0051] It should be noted that in the description of the present utility model, the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0052] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0053] Embodiment 1

[0054] A pulley block for a crane, as Figures 1 to 3 shown, comprising:

[0055] An installation bracket 1;

[0056] A plurality of runners 2 rotatably connected to the installation bracket 1;

[0057] A towing rope 3 wound around the outer surface of the runner 2;

[0058] A lubricating and refueling assembly 4 provided on the installation bracket 1, which includes an oil tank 41 for storing lubricating oil installed on the installation bracket 1, an oil pipe 42 with one end extending into the oil tank 41 and the other end located above the runner 2, and a plurality of oil outlet holes 421 opened on the oil pipe 42 and located directly above the runner 2. The oil outlet holes 421 are configured to spray lubricating oil into the contact part between the runner 2 and the towing rope 3, play a maintenance role for the towing rope 3 and the runner 2, reduce friction, ensure its good use state, and improve its service life;

[0059] And a hook 5 connected to the installation bracket 1 and located below the runner 2.

[0060] In this embodiment, the installation bracket 1 includes a plurality of rows of vertically arranged installation plates 11 distributed side by side. There is a space for placing the runner 2 between adjacent vertically arranged installation plates 11. The installation bracket 1 can support the other components.

[0061] In this embodiment, the runner 2 is connected to the vertically arranged installation plate 11 through a rotating shaft 12. The rotating shaft 12 vertically passes through the center of the vertically arranged installation plate 11 and the runner 2, enabling the runner 2 to rotate around the rotating shaft 12.

[0062] In this embodiment, the lubricating and refueling assembly 4 further includes an oil pump 43 located inside the oil tank 41 and connected to the oil pipe 42.

[0063] In this embodiment, the oil pipe 42 includes:

[0064] A first pipe 422 connected to the oil pump 43 and outputting the lubricating oil in the oil tank 41;

[0065] And a second pipe 423 with one end connected to the first pipe 422 and the other end connected to the installation bracket 1. The second pipe 423 is located above the runner 2. The oil outlet holes 421 are opened on the second pipe 423. The oil outlet holes 421 are located directly above the runner 2, and the lubricating oil inside it can accurately fall into the contact part between the runner 2 and the towing rope 3 to lubricate it sufficiently.

[0066] In this embodiment, a liquid level gauge 44 for testing the height of the lubricating oil level in the fuel tank 41 is installed on the fuel tank 41, facilitating the viewing of the amount of oil inside the fuel tank 41.

[0067] In this embodiment, a first through hole 45 for inputting lubricating oil into the fuel tank 41 is provided in the upper part of the fuel tank 41;

[0068] A second through hole 46 for discharging the lubricating oil in the fuel tank 41 is provided in the lower part of the fuel tank 41;

[0069] A first sealing head 451 is threadedly connected in the first through hole 45;

[0070] A second sealing head 461 is threadedly connected in the second through hole 46.

[0071] In this embodiment, the first through hole 45 is located on the upper surface of the fuel tank 41, and the second through hole 46 is located on the lower surface of the fuel tank 41.

[0072] In this embodiment, a connecting frame 7 is connected to the top of the hook 5, and the connecting frame 7 is rotatably connected to the mounting bracket 1 through a hanging rod 13, enabling the goods hung on the hook 5 to maintain balance when rising or falling, which is convenient to use.

[0073] In this embodiment, the towing rope 3 is a steel wire rope.

[0074] The working principle and working process of the crane pulley block in this embodiment are as follows:

[0075] During use, the pulley block is installed at the use position. During the use of the pulley block, the towing rope 3 rotates around the runner 2. When the operator starts the oil pump 43, the oil pump 43 is used to extract the lubricating oil inside the fuel tank 41, and the lubricating oil is sequentially transported outward through the first pipeline 422 and the second pipeline 423. Subsequently, the lubricating oil sprays out from the oil outlet hole 421 on the second pipeline 423. Since it is directly above the contact position between the runner and the towing rope 3, it falls on the contact part between the runner 4 and the towing rope 3 to lubricate the runner 4 and the towing rope 3 to ensure its use state.

[0076] Embodiment 2

[0077] A pulley block for a crane, as Figure 4 shown, includes:

[0078] A mounting bracket 1;

[0079] A plurality of runners 2 rotatably connected to the mounting bracket 1;

[0080] A towing rope 3 wound around the outer surface of the runner 2;

[0081] A lubricating and refueling assembly 4 is arranged on the mounting bracket 1, which includes an oil tank 41 for storing lubricating oil mounted on the mounting bracket 1, an oil pipe 42 with one end extending into the oil tank 41 and the other end located above the runner 2, and a plurality of oil outlet holes 421 opened on the oil pipe 42 and located directly above the runner 2. The oil outlet holes 421 are configured to spray lubricating oil into the contact part between the runner 2 and the towing rope 3, play a maintenance role for the towing rope 3 and the runner 2, reduce friction, ensure its good use state, and improve its service life;

[0082] And a hook 5 connected to the mounting bracket 1 and located below the runner 2.

[0083] In this embodiment, the mounting bracket 1 includes a plurality of rows of vertically arranged mounting plates 11 distributed in parallel. There is a space for placing the runner 2 between adjacent vertically arranged mounting plates 11, and the mounting bracket 1 can support the rest of the components.

[0084] In this embodiment, the runner 2 is connected to the vertically arranged mounting plate 11 through a rotating shaft 12. The rotating shaft 12 vertically passes through the center of the vertically arranged mounting plate 11 and the runner 2, enabling the runner 2 to rotate around the rotating shaft 12.

[0085] In this embodiment, the lubricating and refueling assembly 4 further includes an oil pump 43 located inside the oil tank 41 and connected to the oil pipe 42.

[0086] In this embodiment, the oil pipe 42 includes:

[0087] A first pipe 422 connected to the oil pump 43 and outputting the lubricating oil in the oil tank 41;

[0088] And a second pipe 423 with one end connected to the first pipe 422 and the other end connected to the mounting bracket 1. The second pipe 423 is located above the runner 2. The oil outlet holes 421 are opened on the second pipe 423 and are located directly above the runner 2. The lubricating oil inside it can accurately fall into the contact part between the runner 2 and the towing rope 3, providing sufficient lubrication for it.

[0089] In this embodiment, a liquid level gauge 44 for testing the liquid level height of the lubricating oil in the oil tank 41 is installed on the oil tank 41, facilitating the viewing of the oil volume inside the oil tank 41.

[0090] In this embodiment, a first through hole 45 for inputting lubricating oil into the oil tank 41 is provided at the upper part of the oil tank 41;

[0091] A second through hole 46 for discharging the lubricating oil in the oil tank 41 is provided at the lower part of the oil tank 41;

[0092] A first sealing head 451 is connected to the first through hole 45 by internal thread;

[0093] A second sealing head 461 is connected to the second through hole 46 by internal thread.

[0094] In this embodiment, the first through hole 45 is located on the upper surface of the fuel tank 41, and the second through hole 46 is located on the lower surface of the fuel tank 41.

[0095] In this embodiment, as Figure 5 shown, a cleaning assembly 6 is arranged below the runner 2, which is located above the hook 5. The cleaning assembly 6 includes:

[0096] A bottom plate 61 connected to the mounting bracket 1;

[0097] and a plurality of bristles 62 connected to the upper surface of the bottom plate 61 and in contact with the outer surface of the towing rope 3. The bristles 62 are in contact with the towing rope 3, which can play a role in cleaning the dirt attached to the surface of the towing rope 3, maintain the towing rope 3 and the runner 2, reduce friction, ensure its good use state, and improve its service life.

[0098] In this embodiment, a connecting frame 7 is connected to the top of the hook 5. The connecting frame 7 is rotatably connected to the mounting bracket 1 through a hanging rod 13, so that the goods hung on the hook 5 can be kept balanced when rising or falling, which is convenient to use.

[0099] In this embodiment, the towing rope 3 is a steel wire rope.

[0100] The working principle and working process of the crane pulley block in this embodiment are as follows:

[0101] During use, the pulley block is installed at the use position. During the use of the pulley block, the towing rope 3 rotates around the runner 2. The rotating towing rope 3 can be in contact with the bristles 62, and the bristles 62 can be used to clean the dirt attached to the surface of the towing rope 3. When the operator starts the oil pump 43, the oil pump 43 is used to extract the lubricating oil inside the fuel tank 41, and the lubricating oil is sequentially transported outward through the first pipeline 422 and the second pipeline 423. Subsequently, the lubricating oil sprays out from the oil outlet hole 421 on the second pipeline 423. Since it is directly above the contact position between the runner and the towing rope 3, it falls on the contact part between the runner 4 and the towing rope 3 to lubricate the runner 4 and the towing rope 3 to ensure its use state.

[0102] Embodiment 3

[0103] A crane pulley block, comprising:

[0104] Mounting bracket 1;

[0105] A plurality of runners 2 rotatably connected to the mounting bracket 1;

[0106] A traction rope 3 wound around the outer surface of the runner 2;

[0107] A lubricating and refueling assembly 4 provided on the mounting bracket 1, which includes an oil tank 41 for storing lubricating oil mounted on the mounting bracket 1, a fuel pipe 42 with one end extending into the oil tank 41 and the other end located above the runner 2, and a plurality of oil outlet holes 421 opened on the fuel pipe 42 and located directly above the runner 2. The oil outlet holes 421 are configured to spray lubricating oil into the contact part between the runner 2 and the traction rope 3, play a maintenance role for the traction rope 3 and the runner 2, reduce friction, ensure its good use state, and improve its service life;

[0108] And a hook 5 connected to the mounting bracket 1 and located below the runner 2.

[0109] In this embodiment, the mounting bracket 1 includes a plurality of rows of vertically arranged mounting plates 11 distributed in parallel. There is a space for placing the runner 2 between adjacent vertically arranged mounting plates 11. The mounting bracket 1 can support the remaining components.

[0110] In this embodiment, the runner 2 is connected to the vertically arranged mounting plate 11 through a rotating shaft 12. The rotating shaft 12 vertically passes through the center of the vertically arranged mounting plate 11 and the runner 2, enabling the runner 2 to rotate around the rotating shaft 12.

[0111] In this embodiment, the lubricating and refueling assembly 4 further includes a fuel pump 43 located inside the oil tank 41 and connected to the fuel pipe 42.

[0112] In this embodiment, the fuel pipe 42 includes:

[0113] A first pipe 422 connected to the fuel pump 43 and outputting the lubricating oil in the oil tank 41;

[0114] And a second pipe 423 with one end connected to the first pipe 422 and the other end connected to the mounting bracket 1. The second pipe 423 is located above the runner 2. The oil outlet holes 421 are opened on the second pipe 423. The oil outlet holes 421 are located directly above the runner 2, and the lubricating oil inside it can accurately fall into the contact part between the runner 2 and the traction rope 3 to lubricate it sufficiently.

[0115] In this embodiment, a liquid level gauge 44 for testing the liquid level height of the lubricating oil in the oil tank 41 is installed on the oil tank 41, which is convenient for checking the oil quantity inside the oil tank 41.

[0116] In this embodiment, a first through hole 45 for inputting lubricating oil into the fuel tank 41 is provided at the upper part of the fuel tank 41;

[0117] A second through hole 46 for discharging the lubricating oil in the fuel tank 41 is provided at the lower part of the fuel tank 41;

[0118] A first sealing head 451 is threadedly connected in the first through hole 45;

[0119] A second sealing head 461 is threadedly connected in the second through hole 46.

[0120] In this embodiment, the first through hole 45 is located on the upper surface of the fuel tank 41, and the second through hole 46 is located on the lower surface of the fuel tank 41.

[0121] In this embodiment, a cleaning assembly 6 is provided below the runner 2 and above the hook 5. The cleaning assembly 6 includes:

[0122] A bottom plate 61 connected to the mounting bracket 1;

[0123] And a plurality of bristles 62 connected to the upper surface of the bottom plate 61 and in contact with the outer surface of the towing rope 3. The bristles 62 are in contact with the towing rope 3, which can clean the dirt attached to the surface of the towing rope 3, maintain the towing rope 3 and the runner 2, reduce friction, ensure its good working state, and extend its service life.

[0124] In this embodiment, as Figure 6 shown, the interior of the bottom plate 61 is hollow, and a plurality of third through holes 611 are provided on the surface of the bottom plate 61. The third through holes 611 are located between a plurality of adjacent bristles 62 and are not in contact with them;

[0125] A fourth through hole 612 is provided at the bottom or side of the bottom plate 61. A third sealing head 613 is threadedly connected in the fourth through hole 612, which can allow the excess lubricating oil dripping from the oil outlet hole 421 to enter the interior of the bottom plate 61 through the third through holes 611, preventing the excess lubricating oil from dripping to other places and causing pollution.

[0126] In this embodiment, a connecting frame 7 is connected to the top of the hook 5. The connecting frame 7 is rotatably connected to the mounting bracket 1 through a hanging rod 13, so that the goods hung on the hook 5 can be kept balanced when rising or falling, which is convenient to use.

[0127] In this embodiment, the towing rope 3 is a steel wire rope.

[0128] The working principle and process of the crane pulley block in this embodiment are as follows:

[0129] During use, the pulley block is installed at the usage position. During the use of the pulley block, the towing rope 3 rotates around the runner 2. The rotating towing rope 3 can come into contact with the bristles 62. The bristles 62 can be used to clean the dirt attached to the surface of the towing rope 3. When the operator starts the oil pump 43, the oil pump 43 is used to extract the lubricating oil inside the fuel tank 41 and convey the lubricating oil outward successively through the first pipe 422 and the second pipe 423. Subsequently, the lubricating oil sprays out through the oil outlet hole 421 on the second pipe 423. Since it is directly above the contact position between the runner and the towing rope 3, it falls on the contact part between the runner 4 and the towing rope 3 to lubricate the runner 4 and the towing rope 3 to ensure their usage state. The excess lubricating oil falls into the bottom plate 61 through the third through hole 611 for effective collection. After it is full, it can be discharged from the fourth through hole 612 or poured back into the fuel tank 41 for secondary use.

[0130] The above description of the embodiments is to enable those of ordinary skill in the art to understand and use the utility model. It is obvious that those who are familiar with the technology in this field can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative labor. Therefore, the present utility model is not limited to the above embodiments, and the improvements and modifications made by those skilled in the art without departing from the scope of the present utility model according to the disclosure of the present utility model should be within the protection scope of the present utility model.

Claims

1. A pulley block for a crane, characterized in that: include: Mounting bracket (1); Rotating a plurality of rotating wheels (2) connected to the mounting bracket (1); A traction rope (3) wound around the outer surface of the rotating wheel (2); A lubrication and oiling assembly (4) arranged on the mounting bracket (1), comprising an oil tank (41) for storing lubricating oil mounted on the mounting bracket (1), an oil pipe (42) with one end extending into the oil tank (41) and the other end located above the rotating wheel (2), and a plurality of oil outlet holes (421) opened on the oil pipe (42) and located directly above the rotating wheel (2), wherein the oil outlet holes (421) are configured to spray the lubricating oil into the contact portion between the rotating wheel (2) and the traction rope (3); And a hook (5) connected to the mounting bracket (1) and located below the rotating wheel (2).

2. A pulley block for a crane according to claim 1, characterized in that: The mounting bracket (1) comprises a plurality of rows of vertical mounting plates (11) arranged in parallel, and there is space between adjacent vertical mounting plates (11) for placing the rotating wheel (2).

3. A pulley block for a crane according to claim 2, characterized in that: The rotating wheel (2) is connected to the vertical mounting plate (11) via a rotating shaft (12), and the rotating shaft (12) vertically passes through the vertical mounting plate (11) and the center of the rotating wheel (2), so that the rotating wheel (2) rotates around the rotating shaft (12).

4. A pulley block for a crane according to claim 1, characterized in that: The lubrication and oiling assembly (4) further comprises an oil delivery pump (43) located inside the oil tank (41) and connected to the oil pipe (42).

5. A pulley block for a crane according to claim 4, characterized in that: The oil pipe (42) comprises: a first pipeline (422) connected to the oil delivery pump (43) and outputting the lubricating oil in the oil tank (41); and a second pipe (423) having one end connected to the first pipe (422) and the other end connected to the mounting bracket (1), wherein the second pipe (423) is located above the rotating wheel (2), and the oil outlet hole (421) is provided on the second pipe (423).

6. A pulley block for a crane according to claim 1, characterized in that: The oil tank (41) is provided with a level meter (44) for testing the height of the lubricating oil level in the oil tank (41).

7. A pulley block for a crane according to claim 1, characterized in that: The upper portion of the oil tank (41) is provided with a first through hole (45) for inputting lubricating oil into the oil tank (41); A second through hole (46) for discharging lubricating oil in the oil tank (41) is provided at the lower part of the oil tank (41); The first through hole (45) is internally threadedly connected to a first sealing head (451); The second through hole (46) is internally threadedly connected to a second sealing head (461).

8. The pulley block for a crane according to claim 1, characterized in that: A cleaning assembly (6) is provided below the rotating wheel (2) and is located above the hook (5). The cleaning assembly (6) comprises: A base plate (61) connected to the mounting bracket (1); and a plurality of brush bristles (62) connected to the upper surface of the bottom plate (61) and in contact with the outer surface of the traction rope (3).

9. A pulley block for a crane according to claim 8, characterized in that: The bottom plate (61) is hollow inside, and a plurality of third through holes (611) are arranged on the surface of the bottom plate (61), wherein the third through holes (611) are located between a plurality of adjacent bristles (62) and do not contact the bristles (62); A fourth through hole (612) is provided at the bottom or side of the bottom plate (61), and a third sealing head (613) is internally threadedly connected to the fourth through hole (612).

10. The pulley block for a crane according to claim 1, characterized in that: The top of the hook (5) is connected to a connecting frame (7), and the connecting frame (7) is rotatably connected to the mounting bracket (1) via a hanging rod (13).

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