Lubricating device of movable pulley block

Abstract

The utility model discloses a lubricating device of a movable pulley block, which comprises a movable pulley shaft, cylindrical counterbores are arranged at the centers of two end faces of the movable pulley shaft, shaft stopping plates are tightly attached to the two end faces of the movable pulley shaft, two bolts penetrate through each shaft stopping plate, and the shaft stopping plates are fixed on the end faces of the movable pulley shaft by the two bolts. Mandrels are installed in the cylindrical counterbores at the two ends of the movable pulley shaft, a plurality of lubricating grooves are formed in the mandrels, grooves matched with the shaft stopping plates in thickness are formed in the positions, close to the ends, of the mandrels, the grooves and the shaft stopping plates are clamped and fixed, a plurality of oil holes are formed in the movable pulley shaft, one ends of the oil holes are connected with the middle of the pulley, and the other ends of the oil holes are communicated with the lubricating grooves corresponding to the mandrels. According to the movable pulley block lubricating device, the problem that the strength of a movable pulley shaft is affected due to the fact that the number of required lubricating holes is large when the multiplying power of a pulley block of an existing movable pulley block lubricating device is large is solved, the influence on the structure of the pulley shaft is small, and the mandrel is convenient to machine, flexible to install and convenient to maintain.

Description

Technical Field

[0001] The utility model belongs to the technical field of lubrication and protection devices, and particularly relates to a lubrication device for a moving pulley block. Background Technique

[0002] In the hoist equipment of a hydropower station, the moving pulley block, as an important lifting component, is responsible for opening and closing various gates, trash racks, etc. The moving pulley block usually adopts a self-lubricating sliding bearing. Since the moving pulley block often needs to operate in water and is long-term exposed to the natural environment, although the self-lubricating sliding bearing reduces the maintenance requirements in the short term, in a humid and corrosive environment, the performance of the bearing material will be affected, resulting in the situation that the moving pulley block will jam or the self-lubrication fails, affecting its normal operation, having potential safety risks, and having a relatively high maintenance cost.

[0003] The traditional lubrication method for the moving pulley block is to process a plurality of lubrication holes on the moving pulley shaft, and each hole corresponds to a pulley for lubrication. However, when the ratio of the moving pulley block is relatively large, the number of required lubrication holes increases, which not only increases the processing difficulty but also affects the strength of the moving pulley shaft, thus affecting the stability and reliability of the entire pulley block. Content of the Utility Model

[0004] The purpose of the utility model is to provide a lubrication device for a moving pulley block, which solves the problem that when the ratio of the existing moving pulley block lubrication device is relatively large, the number of required lubrication holes is relatively large, affecting the strength of the moving pulley shaft.

[0005] The technical solution adopted by the utility model is that the lubrication device for the moving pulley block includes a moving pulley shaft. Cylindrical counterbored holes are opened at the centers of both end faces of the moving pulley shaft. Stop shafts are closely attached to both end faces of the moving pulley shaft. Two bolts are penetrated through each stop shaft, and the two bolts fix the stop shaft on the end face of the moving pulley shaft. Core shafts are installed in the cylindrical counterbored holes at both ends of the moving pulley shaft. A plurality of lubrication grooves are opened on the core shafts. Grooves matching the thickness of the stop shafts are provided near the ends of the core shafts, and the grooves are clamped and fixed with the stop shafts. A plurality of oil holes are opened on the moving pulley shaft. One end of the oil hole is connected to the middle of the pulley, and the other end is communicated with the corresponding lubrication groove on the core shaft.

[0006] The characteristics of the utility model also lie in that:

[0007] Lubrication holes corresponding to each lubrication groove are opened at the ends of the core shafts, and each lubrication groove is respectively communicated with the corresponding lubrication hole.

[0008] Hexagon socket head cap screws are threadedly connected in the lubrication holes at the ends of the core shafts.

[0009] Washers are sleeved between the stop shafts and the bolts.

[0010] The cylindrical counterbore diameter and depth of the movable pulley shaft are equal to the diameter and length of the end of the mandrel.

[0011] The number of lubrication holes is correspondingly opened according to the number of pulleys in the movable pulley block, and the angles of the lubrication holes are evenly distributed.

[0012] The machining length of each lubrication groove is consistent with the perpendicular bisector of the corresponding pulley, and the machining depth of the lubrication groove is equal to the diameter of the lubrication hole.

[0013] The beneficial effects of the present utility model are:

[0014] In the lubrication device of the movable pulley block provided by the present utility model, by installing mandrels in the cylindrical counterbore at both ends of the movable pulley shaft, lubrication grooves corresponding to the lubrication of each pulley are provided on the mandrels. According to the requirements of the pulleys to be lubricated, lubricating oil is injected from the lubrication holes corresponding to the end faces of the mandrels on both sides. The lubrication holes are directly connected to the lubrication grooves. The lubrication grooves are channels on the mandrels, responsible for guiding the lubricating oil from the lubrication holes to the oil holes on the movable pulley shaft. The lubricating oil flows through these oil holes along the channels on the shaft and finally reaches each pulley that needs lubrication to lubricate the corresponding pulley, thereby achieving the one-to-one lubrication effect on the pulleys. The lubrication holes and lubrication grooves are both provided on the mandrels installed later, solving the problem that in the existing lubrication device of the movable pulley block, when the pulley block ratio is large, the number of required lubrication holes is large, affecting the strength of the movable pulley shaft. It has little impact on the structure of the pulley shaft, the mandrel is convenient to machine, flexible to install, and convenient to maintain. It not only improves the reliability and safety of the movable pulley block, but also reduces the long-term maintenance cost. It improves the operation efficiency of the hydropower station. In addition, due to the design of the mandrel allowing more precise lubrication, this helps to reduce the waste of lubricating oil, thereby reducing the operating cost and the impact on the environment.

[0015] By directly screwing the external hexagonal plug into the lubrication hole on the mandrel, this design not only prevents the leakage of the lubricating liquid, ensuring that the lubricating oil will not flow out during the injection process, but also ensures that the lubricating oil can be effectively delivered to the designated lubrication point, thus providing a simple and effective sealing mechanism. The external hexagonal plug forms a closed environment by being tightened in the lubrication hole, thereby maintaining the integrity of the lubrication system. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of the lubrication device of the movable pulley block of the present utility model;

[0017] Figure 2 For the present utility model Figure 1 isometric view;

[0018] Figure 3 It is a schematic structural diagram of the mandrel of the present utility model;

[0019] Figure 4This is a schematic diagram of the end face of the mandrel of the present utility model.

[0020] In the figure: 1. Movable pulley shaft; 2. Shaft stop plate; 3. Bolt; 4. Washer; 5. Mandrel; 6. External hexagonal plug. Specific embodiments

[0021] The present utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] The lubrication device for the movable pulley set provided by the present utility model, as Figure 1 shown, includes a movable pulley shaft 1. Cylindrical countersunk holes are provided at the centers of both end faces of the movable pulley shaft 1. As Figure 2 shown, shaft stop plates 2 are closely attached to both end faces of the movable pulley shaft 1. Two bolts 3 are inserted through each shaft stop plate 2. The two bolts 3 fix the shaft stop plate 2 to the end face of the movable pulley shaft 1. Washers 4 are sleeved between the shaft stop plate 2 and the bolts 3 to prevent the bolts 3 from loosening and ensure the more firm fixation of the shaft stop plate 2.

[0023] A mandrel 5 is installed in the cylindrical countersunk holes at both ends of the movable pulley shaft 1. As Figure 3 shown, a plurality of lubrication grooves are provided on the mandrel 5. A groove matching the thickness of the shaft stop plate 2 is provided near the end of the mandrel 5. The groove is clamped and fixed with the shaft stop plate 2 to complete the fixation of the mandrel 5 and the shaft stop plate 2. A plurality of oil holes are provided on the movable pulley shaft 1. One end of the oil hole is connected to the middle part of the pulley, and the other end is communicated with the corresponding lubrication groove of the mandrel 5.

[0024] Lubrication holes corresponding to each lubrication groove are provided at the end of the mandrel 5. Each lubrication groove is respectively communicated with the corresponding lubrication hole. The lubrication groove is a channel on the mandrel, responsible for guiding the lubricating oil from the lubrication hole to the oil hole on the movable pulley shaft. The lubricating oil flows through these oil holes, along the channels on the shaft, and finally reaches each pulley that needs lubrication.

[0025] External hexagonal plugs 6 are threadedly connected to the lubrication holes on the mandrel 5 to prevent the lubricating oil from flowing out.

[0026] The diameter of the small hole of the cylindrical countersunk hole of the movable pulley shaft 1 is equal to the outer diameter of the body of the mandrel 5. The cylindrical diameter and cylindrical depth of the cylindrical countersunk hole of the movable pulley shaft 1 are equal to the end diameter and length of the mandrel 5.

[0027] As Figure 4 shown, the number of lubrication holes is correspondingly opened according to the number of pulleys of the movable pulley set, and the angles of the lubrication holes are evenly distributed. The processing length of each lubrication groove is consistent with the perpendicular bisector of the corresponding pulley, and the processing depth of the lubrication groove is equal to the diameter of the lubrication hole.

[0028] The lubricating device for the movable pulley block provided by the utility model has the following working principle: According to the pulleys of the movable pulley block to be lubricated, lubricating oil is injected from the lubricating holes corresponding to each pulley at the end faces of the two side mandrels 5. The lubricating oil flows through the lubricating grooves to the oil holes on the movable pulley shaft 1, and then flows along the oil holes to the positions of the pulleys to be lubricated, completing the lubrication of the corresponding pulleys of the movable pulley block. The external hexagonal plug 6 is directly screwed into the lubricating hole on the mandrel 5 to prevent the lubricating oil from flowing out.

[0029] Embodiment 1

[0030] The lubricating device for the movable pulley block proposed in this embodiment, as Figure 1 shown, includes a movable pulley shaft 1. Cylindrical counterbored holes are opened at the centers of both end faces of the movable pulley shaft 1. As Figure 2 shown, retaining plates 2 are closely attached to both end faces of the movable pulley shaft 1. Two bolts 3 are inserted through each retaining plate 2, and the two bolts 3 fix the retaining plate 2 to the end face of the movable pulley shaft 1. Mandrels 5 are installed in the cylindrical counterbored holes at both ends of the movable pulley shaft 1. As Figure 3 shown, a number of lubricating grooves are opened on the mandrel 5. Grooves matching the thickness of the retaining plate 2 are provided near the ends of the mandrel 5, and the grooves are clamped and fixed with the retaining plate 2. A number of oil holes are opened on the movable pulley shaft 1. One end of the oil hole is connected to the middle part of the pulley, and the other end is communicated with the corresponding lubricating groove on the mandrel 5.

[0031] Embodiment 2

[0032] The lubricating device for the movable pulley block proposed in this embodiment, as Figure 1 shown, includes a movable pulley shaft 1. Cylindrical counterbored holes are opened at the centers of both end faces of the movable pulley shaft 1. As Figure 2 shown, retaining plates 2 are closely attached to both end faces of the movable pulley shaft 1. Two bolts 3 are inserted through each retaining plate 2, and the two bolts 3 fix the retaining plate 2 to the end face of the movable pulley shaft 1. Mandrels 5 are installed in the cylindrical counterbored holes at both ends of the movable pulley shaft 1. As Figure 3 shown, a number of lubricating grooves are opened on the mandrel 5. Grooves matching the thickness of the retaining plate 2 are provided near the ends of the mandrel 5, and the grooves are clamped and fixed with the retaining plate 2. A number of oil holes are opened on the movable pulley shaft 1. One end of the oil hole is connected to the middle part of the pulley, and the other end is communicated with the corresponding lubricating groove on the mandrel 5. Lubricating holes corresponding to each lubricating groove are opened at the ends of the mandrel 5, and each lubricating groove is respectively communicated with the corresponding lubricating hole.

[0033] External hexagonal plugs 6 are threadedly connected to the lubricating holes at the ends of the mandrel 5.

[0034] Washers 4 are sleeved between the retaining plates 2 and the bolts 3.

[0035] Embodiment 3

[0036] The lubricating device for the movable pulley block proposed in this embodiment, as Figure 1As shown, it includes a movable pulley shaft 1. Cylindrical countersunk holes are provided at the centers of both end faces of the movable pulley shaft 1. As Figure 2 shown, stop shaft plates 2 are closely attached to both end faces of the movable pulley shaft 1. Two bolts 3 are inserted through each stop shaft plate 2, and the two bolts 3 fix the stop shaft plate 2 to the end face of the movable pulley shaft 1. Core shafts 5 are installed in the cylindrical countersunk holes at both ends of the movable pulley shaft 1. As Figure 3 shown, a number of lubricating grooves are provided on the core shaft 5. Grooves matching the thickness of the stop shaft plate 2 are provided near the ends of the core shaft 5, and the grooves are clamped and fixed with the stop shaft plate 2. A number of oil holes are provided on the movable pulley shaft 1. One end of the oil hole is connected to the middle part of the pulley, and the other end is communicated with the corresponding lubricating groove of the core shaft 5. Lubricating holes corresponding to each lubricating groove are provided at the ends of the core shaft 5, and each lubricating groove is respectively communicated with the corresponding lubricating hole.

[0037] Hexagon socket head cap plugs 6 are threadedly connected to the lubricating holes at the ends of the core shaft 5.

[0038] Washers 4 are sleeved between the stop shaft plate 2 and the bolts 3.

[0039] The small hole diameter of the cylindrical countersunk hole of the movable pulley shaft 1 is equal to the outer diameter of the body of the core shaft 5, and the cylindrical diameter and cylindrical depth of the cylindrical countersunk hole of the movable pulley shaft 1 are equal to the end diameter and length of the core shaft 5.

[0040] Embodiment 4

[0041] The lubricating device for the movable pulley set proposed in this embodiment, as Figure 1 shown, includes a movable pulley shaft 1. Cylindrical countersunk holes are provided at the centers of both end faces of the movable pulley shaft 1. As Figure 2 shown, stop shaft plates 2 are closely attached to both end faces of the movable pulley shaft 1. Two bolts 3 are inserted through each stop shaft plate 2, and the two bolts 3 fix the stop shaft plate 2 to the end face of the movable pulley shaft 1. Core shafts 5 are installed in the cylindrical countersunk holes at both ends of the movable pulley shaft 1. As Figure 3 shown, a number of lubricating grooves are provided on the core shaft 5. Grooves matching the thickness of the stop shaft plate 2 are provided near the ends of the core shaft 5, and the grooves are clamped and fixed with the stop shaft plate 2. A number of oil holes are provided on the movable pulley shaft 1. One end of the oil hole is connected to the middle part of the pulley, and the other end is communicated with the corresponding lubricating groove of the core shaft 5. Lubricating holes corresponding to each lubricating groove are provided at the ends of the core shaft 5, and each lubricating groove is respectively communicated with the corresponding lubricating hole.

[0042] Hexagon socket head cap plugs 6 are threadedly connected to the lubricating holes at the ends of the core shaft 5.

[0043] Washers 4 are sleeved between the stop shaft plate 2 and the bolts 3.

[0044] The small hole diameter of the cylindrical countersunk hole of the movable pulley shaft 1 is equal to the outer diameter of the body of the core shaft 5, and the cylindrical diameter and cylindrical depth of the cylindrical countersunk hole of the movable pulley shaft 1 are equal to the end diameter and length of the core shaft 5.

[0045] As Figure 4 shown, the number of lubricating holes is correspondingly opened according to the number of pulleys in the movable pulley block, and the angles of the lubricating holes are evenly distributed. The machining length of each lubricating groove is consistent with the perpendicular bisector of the corresponding pulley, and the machining depth of the lubricating groove is equal to the diameter of the lubricating hole.

Claims

1. Lubricating device for a movable pulley block, characterized in that, It includes a movable pulley shaft (1). Column-shaped countersunk holes are provided at the centers of both end faces of the movable pulley shaft (1). Stop shaft plates (2) are closely attached to both end faces of the movable pulley shaft (1). Two bolts (3) are inserted through each stop shaft plate (2), and the two bolts (3) fix the stop shaft plate (2) to the end face of the movable pulley shaft (1). Core shafts (5) are installed in the column-shaped countersunk holes at both ends of the movable pulley shaft (1). A number of lubricating grooves are provided on the core shafts (5). Grooves matching the thickness of the stop shaft plates (2) are provided near the ends of the core shafts (5), and the grooves are fixedly connected to the stop shaft plates (2) in a clamping manner. A number of oil holes are provided on the movable pulley shaft (1). One end of each oil hole is connected to the middle part of the pulley, and the other end is communicated with the corresponding lubricating groove.

2. The lubricating device for the movable pulley block according to claim 1, characterized in that, Lubricating holes corresponding to each lubricating groove are provided at the ends of the core shaft (5), and each lubricating groove is respectively communicated with the corresponding lubricating hole.

3. The lubricating device for the movable pulley block according to claim 2, characterized in that, Hexagon socket head cap screws (6) are threadedly connected in the lubricating holes on the core shafts (5).

4. The lubricating device for the movable pulley block according to claim 1, wherein, Washers (4) are sleeved between the stop shaft plates (2) and the bolts (3).

5. The lubrication device for the movable pulley block according to claim 1, characterized in that, The diameter of the small hole of the column-shaped countersunk hole of the movable pulley shaft (1) is equal to the outer diameter of the body of the core shaft (5), and the column-shaped diameter and column-shaped depth of the column-shaped countersunk hole of the movable pulley shaft (1) are equal to the end diameter and length of the core shaft (5).

6. The lubrication device for the movable pulley block according to claim 2, characterized in that, The number of the lubricating holes is correspondingly provided according to the number of pulleys of the movable pulley block, and the angles of the lubricating holes are evenly distributed.

7. The lubricating device for the movable pulley block according to claim 6, characterized in that, The processing length of each lubricating groove is consistent with the perpendicular bisector of the corresponding pulley, and the processing depth of the lubricating groove is equal to the diameter of the lubricating hole.

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