A crown block sheave bearing shaft body multi-lubricating port lubricating device

Abstract

The utility model discloses a kind of sky car pulley set bearing shaft body multi-injection grease port lubricating devices, specifically related to heavy machinery lubricating technical field, including main shaft mechanism, the outer wall of main shaft mechanism is provided with pulley set mechanism, the main shaft mechanism includes main body cylinder, the inner ring of main body cylinder is uniformly fixed and installed with several oil delivery hollow rings, the outer wall of several oil delivery hollow rings is respectively annular array fixedly connected with several oil outlet pipes passing through its inner cavity.The utility model relates to a kind of sky car pulley set bearing shaft body multi-injection grease port lubricating devices, by multi-injection grease port design, each bearing corresponding independent oil delivery path, including oil delivery connecting pipe, oil delivery hollow ring and oil outlet pipe, so that lubricating grease can be directly, evenly injected into each bearing inside, effectively solve the problem that traditional single oil port lubricating system in far end bearing is insufficient lubrication due to flow resistance, to significantly reduce bearing wear, prolong the service life of bearing, improve equipment operation reliability.

Description

Technical Field

[0001] This utility model relates to the field of heavy machinery lubrication technology, and in particular to a multi-grease-injection port lubrication device for the shaft of a crane pulley block bearing. Background Technology

[0002] In the field of heavy machinery lubrication technology, particularly concerning the bearings of liquid overhead crane pulley blocks used in equipment such as cranes and port machinery, the design of the lubrication system directly affects the reliability and service life of the equipment. Currently, traditional pulley block lubrication systems generally adopt a single-port grease injection structure, where grease is injected from one end of the shaft and discharged to the other end via an internal oil passage. The existing technology has the following problems: Because the grease encounters significant resistance during its flow within the shaft, bearings located at the far end are difficult to adequately lubricate, resulting in a prolonged state of insufficient lubrication. This exacerbates bearing wear, leading to frequent premature bearing failures due to poor lubrication. This not only increases the equipment failure rate but also significantly raises maintenance and replacement costs. Operators cannot intuitively and accurately judge the grease filling status of each bearing, which can easily lead to some bearings being over-lubricated while others are under-lubricated, affecting the overall lubrication effect. Utility Model Content

[0003] The main purpose of this utility model is to provide a multi-greasing port lubrication device for the shaft of a crane pulley block bearing, which can effectively solve the problems mentioned in the background art, such as insufficient lubrication of the distal bearing caused by grease injection through a single grease port, and over-lubrication or under-lubrication caused by the operator's inability to accurately judge the lubrication status of each bearing.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A multi-grease-injection lubrication device for a crane pulley block bearing shaft includes a main shaft mechanism. The outer wall of the main shaft mechanism is provided with a pulley block mechanism. The main shaft mechanism includes a main cylinder. A plurality of hollow oil-supplying rings are uniformly fixedly installed on the inner ring of the main cylinder. A plurality of oil outlet pipes penetrating the inner cavity of the plurality of hollow oil-supplying rings are fixedly connected in a ring array on the outer wall of the plurality of hollow oil-supplying rings. An oil-supply connecting pipe is fixedly connected to the inner ring of the plurality of hollow oil-supplying rings. The plurality of oil-supply connecting pipes are distributed in a ring array in the inner cavity of the main cylinder, and the front end of the plurality of oil-supply connecting pipes extends to the front side of the main cylinder and is provided with an oil replenishment mechanism.

[0005] Preferably, a pressure sensor is fixedly installed on the outer wall of several oil supply connecting pipes near the side of the oil supply hollow ring. The monitoring probe of the pressure sensor extends through the inner cavity of the oil supply connecting pipe to monitor the lubrication status in real time and ensure that the filling is in place.

[0006] Preferably, the pulley block mechanism includes a plurality of pulley discs, each of which has a through-hole for mounting bearings extending from front to back. Bearings are fixedly mounted on the inner ring of each of the through-holes, and each of the bearings is fixedly sleeved on the outer wall of the main body cylinder.

[0007] Preferably, the inner rings of the plurality of bearings are provided with a plurality of oil inlet holes that penetrate their inner cavities in an annular array, and the plurality of oil outlet pipes on the outer wall of the plurality of oil supply hollow rings are respectively connected to the plurality of oil inlet holes of the plurality of bearing inner rings, for injecting grease into the plurality of bearings in an annular manner.

[0008] Preferably, each of the several oil replenishment mechanisms includes an oil replenishment pipe, and the several oil replenishment pipes are respectively fixedly connected to one end of the several oil delivery connecting pipes that pass through the front side of the main body cylinder. The outer wall of the oil replenishment pipe is provided with a threaded wall, and a protective threaded cap is installed on the outer thread of the threaded wall. A sealing rubber plug is fixedly installed on the inner wall of the protective threaded cap near the oil replenishment pipe. The sealing rubber plug is engaged with the inner ring of the oil replenishment pipe to seal the oil replenishment pipe.

[0009] Preferably, a duckbill check valve is fixedly installed on the inner ring of the refueling pipe, and the duckbill check valve allows for one-way flow towards the oil delivery connection pipe.

[0010] Compared with the prior art, the present invention has the following beneficial effects: 1. This utility model provides a multi-grease port lubrication device for the shaft of a crane pulley block bearing. Through the multi-grease port design, each bearing corresponds to an independent oil delivery path, including an oil delivery connecting pipe, an oil delivery hollow ring, and an oil outlet pipe, so that the grease can be directly and evenly injected into the interior of each bearing. This effectively solves the problem of insufficient lubrication of the far-end bearings due to high flow resistance in the traditional single-oil port lubrication system, thereby significantly reducing bearing wear, extending bearing service life, and improving the reliability of equipment operation.

[0011] 2. This utility model provides a multi-greasing port lubrication device for the shaft of a crane pulley block bearing. By setting a pressure sensor on the oil supply connection pipe, the pressure change during the grease filling process can be monitored in real time. When the pressure reaches the set value, it indicates that the grease has been filled in place. The operator can then accurately control the amount of grease injected to avoid over-lubrication or under-lubrication of some bearings, ensuring consistent overall lubrication effect, reducing maintenance costs and equipment failure rate. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the main shaft mechanism of this utility model; Figure 3 This utility model Figure 2 Enlarged schematic diagram of point A in the middle; Figure 4 This is a schematic diagram of the pulley block mechanism of this utility model; Figure 5 This is a schematic diagram of the oil replenishment mechanism of this utility model.

[0013] In the diagram: 1. Main shaft mechanism; 11. Main cylinder; 12. Hollow oil supply ring; 13. Oil outlet pipe; 14. Oil supply connecting pipe; 141. Pressure sensor; 15. Oil replenishment mechanism; 151. Oil filling pipe; 152. Duckbill check valve; 153. Threaded wall; 154. Protective threaded cap; 155. Sealing rubber plug; 2. Pulley block mechanism; 21. Pulley disc; 22. Bearing mounting through hole; 23. Bearing; 24. Oil inlet hole. Detailed Implementation

[0014] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0015] like Figure 1 As shown, a multi-grease-injection lubrication device for the shaft of a crane pulley block bearing includes a main shaft mechanism 1 and a pulley block mechanism 2. The pulley block mechanism 2 is sleeved on the outer wall of the main shaft mechanism 1 to form an integral structure.

[0016] The specific structure of spindle mechanism 1 is as follows: Figure 2 and Figure 3 As shown, the main shaft mechanism 1 includes a main cylinder 11, which is a cylindrical structure. Several oil-supplying hollow rings 12 are uniformly fixedly installed on its inner ring. Each oil-supplying hollow ring 12 is an annular hollow pipe. Several oil outlet pipes 13 are fixedly connected to the outer wall of each oil-supplying hollow ring 12 in an annular array. The oil outlet pipes 13 penetrate the inner cavity of the oil-supplying hollow ring 12. An oil-supplying connecting pipe 14 is fixedly connected to the inner ring of each oil-supplying hollow ring 12. The oil-supplying connecting pipes 14 are distributed in an annular array in the inner cavity of the main cylinder 11. The front end of the oil-supplying connecting pipe 14 extends to the front side of the main cylinder 11 and is connected to an oil replenishment mechanism 15. A pressure sensor 141 is fixedly installed on the outer wall of the oil-supplying connecting pipe 14 near the oil-supplying hollow ring 12. The monitoring probe of the pressure sensor 141 extends into the inner cavity of the oil-supplying connecting pipe 14 to monitor the pressure status of the grease in real time and ensure that the grease is filled in place. The hollow oil delivery ring 12 is fixedly installed on the inner ring of the main body cylinder 11 by welding to ensure structural stability and sealing. The oil outlet pipe 13 is welded to the hollow oil delivery ring 12 and sealed with sealant or O-rings to prevent grease leakage. The oil delivery connecting pipe 14 is fixed to the hollow oil delivery ring 12 by welding and a sealing ring is set at the connection to ensure the sealing of the grease flow path. The monitoring probe of the pressure sensor 141 is sealed with an oil-resistant sealing ring between itself and the inner cavity of the oil delivery connecting pipe 14 to prevent grease leakage. The signal line of the pressure sensor 141 is led out through the reserved hole of the main body cylinder 11 and connected to an external PLC or display instrument or other monitoring system for real-time pressure display and alarm triggering. The pressure sensor 141 is model 2SMPP-02, which is existing technology, and its specific working principle will not be described in detail here.

[0017] The specific structure of pulley block mechanism 2 is as follows: Figure 4 As shown, the pulley block mechanism 2 includes several pulley discs 21. Each pulley disc 21 has a bearing mounting through hole 22 that runs from front to back. A bearing 23 is fixedly installed in the inner ring of the bearing mounting through hole 22. The bearing 23 is fixedly sleeved on the outer wall of the main body cylinder 11. Each bearing 23 has several oil inlet holes 24 arranged in an annular array in the inner ring. The oil inlet holes 24 pass through the inner cavity of the bearing 23. The oil outlet pipe 13 on the outer wall of the oil delivery hollow ring 12 is connected to the oil inlet hole 24 of the inner ring of the bearing 23, so that the grease can be injected into the bearing 23 from the oil outlet pipe 13 through the oil inlet hole 24 in an annular manner to achieve uniform lubrication.

[0018] The specific structure of the oil replenishment mechanism 15 is as follows: Figure 5 As shown, each oil replenishment mechanism 15 includes an oil filling pipe 151, which is fixedly connected to one end of the oil supply connection pipe 14 that passes through the front side of the main body cylinder 11. The outer wall of the oil filling pipe 151 is provided with a threaded wall 153, and a protective threaded cap 154 ​​is threadedly installed on the threaded wall 153. A sealing rubber plug 155 is fixedly installed on the inner wall of the protective threaded cap 154. When the protective threaded cap 154 ​​is tightened, the sealing rubber plug 155 engages with the inner ring of the oil filling pipe 151 to form a seal, preventing dust and impurities from entering. A duckbill one-way valve 152 is fixedly installed on the inner ring of the oil filling pipe 151. The duckbill one-way valve 152 flows in one direction toward the oil supply connection pipe 14 to prevent grease backflow.

[0019] The working principle of the multi-grease port lubrication device on the bearing shaft of the overhead crane pulley block will be explained in detail below.

[0020] like Figure 1-5As shown, when lubrication of bearing 23 is required, the operator opens the protective threaded cap 154 ​​of the oil replenishment mechanism 15, connects the grease gun to the oil filling pipe 151, and the grease enters the oil supply connection pipe 14 under pressure through the duckbill check valve 152. The duckbill check valve 152 ensures that the grease can only flow in one direction to the oil supply connection pipe 14 to prevent backflow. The grease flows along the oil supply connection pipe 14 into the corresponding oil supply hollow ring 12, and then is injected into the interior of bearing 23 through the oil outlet pipe 13 and the oil inlet hole 24 of bearing 23. Since each bearing 23 corresponds to an independent oil supply path, the grease can be evenly distributed. The grease is directly injected into each bearing 23 to avoid insufficient lubrication of the distant bearings. The pressure sensor 141 monitors the grease pressure in the oil supply pipe 14 in real time. When the pressure reaches the set value, it indicates that the grease has been filled in place, and the operator can stop grease injection to prevent over-lubrication or under-lubrication. After lubrication, tighten the protective thread cap 154 ​​and seal the rubber plug 155 to ensure that the oil filling pipe 151 is sealed and keep the inside clean. This utility model achieves independent lubrication of each bearing through the multi-greasing port design, ensuring lubrication uniformity and reliability, extending the service life of the bearings, and reducing maintenance costs.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-grease-injection lubrication device for the shaft of a crane pulley block bearing, comprising a main shaft mechanism (1), characterized in that: The outer wall of the main shaft mechanism (1) is provided with a pulley block mechanism (2). The main shaft mechanism (1) includes a main body cylinder (11). A number of oil-transporting hollow rings (12) are uniformly fixedly installed on the inner ring of the main body cylinder (11). A number of oil outlet pipes (13) penetrating the inner cavity are fixedly connected to the outer wall of the oil-transporting hollow rings (12) in a ring array. An oil-transporting connecting pipe (14) is fixedly connected to the inner ring of the oil-transporting hollow rings (12). The oil-transporting connecting pipes (14) are distributed in a ring array in the inner cavity of the main body cylinder (11), and the front end of the oil-transporting connecting pipes (14) penetrates to the front side of the main body cylinder (11) and is provided with an oil replenishment mechanism (15).

2. The multi-grease-injection port lubrication device for the bearing shaft of a crane pulley block according to claim 1, characterized in that: Pressure sensors (141) are fixedly installed on the outer wall of several oil supply connecting pipes (14) near the oil supply hollow ring (12). The monitoring probe of the pressure sensor (141) extends through the inner cavity of the oil supply connecting pipe (14) to monitor the lubrication status in real time and ensure that the filling is in place.

3. The multi-grease-injection port lubrication device for the bearing shaft of a crane pulley block according to claim 1, characterized in that: The pulley block mechanism (2) includes several pulley discs (21), each of which has a through bearing mounting hole (22) that runs from front to back. Each of the several through bearing mounting holes (22) has a bearing (23) fixedly mounted on its inner ring. Each of the several bearings (23) is fixedly sleeved on the outer wall of the main body cylinder (11).

4. The multi-grease-injection port lubrication device for the bearing shaft of a crane pulley block according to claim 3, characterized in that: The inner rings of several bearings (23) are arranged in an annular array with several oil inlet holes (24) penetrating their inner cavities, and several oil outlet pipes (13) on the outer wall of several oil supply hollow rings (12) are respectively connected to several oil inlet holes (24) of the inner rings of several bearings (23) to inject grease into several bearings (23) in an annular manner.

5. The multi-grease-injection port lubrication device for the bearing shaft of a crane pulley block according to claim 1, characterized in that: Each of the aforementioned oil replenishment mechanisms (15) includes an oil replenishment pipe (151). The oil replenishment pipes (151) are respectively fixedly connected to one end of the main body cylinder (11) through which the oil supply connection pipes (14) pass. The outer wall of the oil replenishment pipe (151) is provided with a threaded wall (153). A protective threaded cap (154) is installed on the outer thread of the threaded wall (153). A sealing rubber plug (155) is fixedly installed on the inner wall of the protective threaded cap (154) near the oil replenishment pipe (151). The sealing rubber plug (155) is engaged with the inner ring of the oil replenishment pipe (151) to seal the oil replenishment pipe (151).

6. The multi-grease-injection port lubrication device for the bearing shaft of a crane pulley block according to claim 5, characterized in that: The inner ring of the refueling pipe (151) is fixedly equipped with a duckbill one-way valve (152), which flows unidirectionally toward the oil delivery connection pipe (14).

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