An automatic lubrication structure for wire ropes of port quay cranes and container cranes

Abstract

This invention discloses an automatic lubrication structure for wire ropes used in port quay crane container cranes, including a lubrication structure and an installation structure. The lubrication structure includes two sleeves through which the wire rope passes. A lubrication cylinder is installed between the two sleeves. The lubrication cylinder includes a cylinder body with lubricating bristles on its inner side and a driven gear on its outer surface. A single-phase AC motor is installed on the sleeves, and a driving gear is installed on the single-phase AC motor via a connecting rod. The installation structure includes an installation box with a movable cover at the bottom and a movable shaft assembly fixedly installed on the top. The movable shaft assembly is connected and fixed to the two sleeves via an adjusting rod. A lubricating oil tank is installed inside the installation box, and an oil pump is installed on the outside of the installation box. This invention uses a single-phase AC motor to drive the lubrication cylinder to rotate and uses the lubricating bristles to evenly apply lubricating oil to the surface of the wire rope, avoiding lubrication dead zones on the surface of the wire rope.

Description

Technical Field

[0001] This invention relates to the field of wire rope lubrication technology, and in particular to an automatic lubrication structure for wire ropes used in port quay crane container cranes. Background Technology

[0002] Container quay cranes are core loading and unloading equipment in container hub ports. Their lifting, tilting, and trolley traction mechanisms all rely on high-strength steel wire ropes as their core load-bearing and transmission components. These wire ropes operate under conditions of high-frequency heavy loads, sea breezes and salt spray, dust erosion, and continuous reciprocating bending. The quality of lubrication directly determines their fatigue life, corrosion resistance, and overall operational safety. Good lubrication significantly reduces wear between the wires, isolates corrosive media, and extends service life, making it a crucial aspect of quay crane operation and maintenance.

[0003] A lubrication device for the pitch wire rope of a quay container crane, patent number CN 223294610 U, belongs to the field of wire rope lubrication technology. It includes a main support frame, a lubrication sleeve for threading the wire rope on its top side, and an oil injection hole on the lubrication sleeve. Traveling mechanisms are arranged on both sides of the lubrication sleeve at both ends of the main support frame, allowing the traveling mechanisms to move along the wire rope, thereby driving the main support frame to move along the wire rope. An oil supply mechanism is located on the bottom side of the main support frame, connected to an oil delivery pipe. The oil delivery pipe is connected to the oil injection hole on the lubrication sleeve, allowing the oil supply mechanism to deliver lubricating grease into the inner cavity of the lubrication sleeve through the oil delivery pipe and the oil injection hole.

[0004] The above technology has the following problems when used: the wire rope and the lubrication sleeve are relatively fixed. Due to the influence of gravity, the lubricating oil will accumulate at the bottom of the lubrication sleeve, which will reduce the amount of lubricating oil at the top of the wire rope. This will result in uneven lubrication of the wire rope and the easy occurrence of lubrication dead zones. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an automatic lubrication structure for wire ropes used in port quay crane container cranes. This solves the problem in the aforementioned technologies where lubricating oil accumulates below the lubrication sleeve, reducing the amount of lubricating oil at the top of the wire rope, leading to uneven lubrication and potential lubrication dead zones.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: an automatic lubrication structure for wire rope of a port quay crane container crane, comprising a lubrication structure and an installation structure. The lubrication structure includes two coaxial sleeves through which the wire rope passes. A rotatable lubrication cylinder is coaxially installed between the two sleeves. The lubrication cylinder includes a hollow cylinder body with lubrication bristles on the inner side and lubrication holes on the inner wall of the cylinder body. A driven gear is provided on the outer surface of the cylinder body. A single-phase AC motor is installed on one of the sleeves. A connecting rod is connected to the output end of the single-phase AC motor, and a driving gear that meshes with the driven gear is fixedly installed on the connecting rod.

[0007] The mounting structure includes a mounting box with an open bottom. A movable cover is mounted on the bottom of the mounting box via a rotating shaft. A movable shaft assembly is fixedly mounted on the top of the mounting box. The movable shaft assembly is connected and fixed to two sleeves via an adjusting rod. A lubricating oil tank is installed inside the mounting box. An oil pump is installed on the outside of the mounting box. The output end of the oil pump is connected to the inside of the cylinder via an oil suction pipe. The input end of the oil pump extends into the inside of the lubricating oil tank. A mounting bracket is welded to one side of the mounting box.

[0008] Preferably, a connecting pipe is provided on the facing surfaces of the two sleeves, a notch is formed above the connecting pipe, and connecting rings are provided at both ends of the cylinder, which are fitted on the outside of the connecting pipe. Coaxial bearings are installed on the inner and outer sides of the connecting rings, and a fixing ring is installed on one side of the notch by bolts, which is fitted on the outside of the bearing.

[0009] Preferably, two coaxial support rings are fixedly installed on the outer side of the two sleeves, the connecting rod is a cylindrical structure, the connecting rod passes through the support ring, and the connecting rod rotates inside the support ring.

[0010] Preferably, four threaded holes are provided through each of the two sleeves at opposite ends. The four threaded holes are evenly distributed in a ring on the outside of the sleeves, and a limit component is installed in the threaded hole.

[0011] Preferably, the limiting component includes a threaded rod that is threaded to a threaded hole, a handle is provided at the outer end of the threaded rod, a mounting seat is mounted at the inner end of the threaded rod via a bearing connecting seat, a guide wheel is installed in the mounting seat, and a wing nut is threadedly installed at the outer end of the threaded rod.

[0012] Preferably, the top of the mounting box has an oil outlet, the opening of the lubricating oil tank extends into the oil outlet, and the top is provided with a sealing cover. The oil pump input pipe passes through the sealing cover, and the passage is sealed.

[0013] Preferably, the movable cover is provided with a latch, and a horizontal clamping plate is installed on the inner side of the movable cover through a support screw. The diameter of the clamping plate is two-thirds of the diameter of the movable cover. The support screw and the movable cover are threaded together, and the top of the support screw is connected to the clamping plate through a bearing seat. The bottom of the support screw is provided with a wing nut.

[0014] Preferably, the mounting bracket is located on the side of the mounting box, and the mounting bracket has mounting holes.

[0015] Preferably, the movable shaft assembly includes two semicircular plates fixedly connected to the mounting box, and a rotatable shaft is installed between the two semicircular plates via bearings. One end of each of the two adjusting rods is fixedly connected to the shaft, and the other end of each rod is welded with a connecting block. The connecting blocks are fixedly connected to the two sleeves respectively by bolts.

[0016] This invention provides an automatic lubrication structure for wire ropes of container cranes used in port quay cranes, which has the following beneficial effects: This invention uses a single-phase AC motor to drive the lubrication cylinder to rotate, and uses lubrication bristles to evenly apply lubricating oil to the surface of the wire rope, avoiding lubrication dead zones on the surface of the wire rope. At the same time, the movable shaft assembly and adjusting rod can flexibly adjust the tilt angle of the lubrication structure, so that the lubrication structure can be adjusted within a certain angle to follow the traction direction of the wire rope, reducing wear between the wire rope and the lubrication structure and extending the service life of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall appearance of the present invention; Figure 2 This is a cross-sectional schematic diagram of the mounting structure of the present invention; Figure 3 This is a cross-sectional schematic diagram of the lubrication structure of the present invention; Figure 4 for Figure 3 Partial structural diagram; Figure 5 This is a left view of the lubrication cylinder of the present invention; Figure 6 This is a schematic cross-sectional view of the lubrication cylinder of the present invention from the left view direction; Figure 7 This is a schematic diagram of the installation of the limiting component of the present invention.

[0018] In the diagram: 1. Sleeve; 101. Notch; 102. Connecting pipe; 103. Threaded hole; 2. Lubrication cylinder; 201. Cylinder body; 202. Lubrication bristles; 203. Lubrication hole; 204. Connecting ring; 205. Driven gear; 3. Fixed ring; 4. Single-phase AC motor set; 5. Support ring; 6. Connecting rod; 7. Drive gear; 8. Limiting assembly; 801. Threaded rod; 802. Mounting base; 803. Guide wheel; 804. Wing nut; 805. Handle; 9. Mounting box; 901. Oil outlet; 902. Movable cover; 903. Support screw; 904. Pressure plate; 905. Lock; 10. Lubricating oil tank; 11. Oil pump; 12. Mounting bracket; 13. Connecting block; 14. Movable shaft assembly; 15. Oil suction pipe; 16. Adjusting rod. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1-7 This invention provides a technical solution: an automatic lubrication structure for wire ropes of container cranes in ports, comprising a lubrication structure and an installation structure. The lubrication structure includes two coaxial sleeves 1 through which the wire rope passes. A rotatable lubrication cylinder 2 is coaxially installed between the two sleeves 1. The lubrication cylinder 2 includes a hollow cylinder 201, with lubrication bristles 202 provided on the inner side of the cylinder 201. Lubrication holes 203 are formed on the inner wall of the cylinder 201, allowing lubricating oil to flow from the lubrication holes 203 onto the lubrication bristles 202. A driven gear 205 is provided on the outer surface of the cylinder 201. A single-phase AC motor 4 is installed on one of the sleeves 1. The output end of group 4 is connected to a connecting rod 6 via a reducer. A driving gear 7 that meshes with the driven gear 205 is fixedly installed on the connecting rod 6. As a preferred embodiment, the single-phase AC motor group 4 includes, but is not limited to, a single-phase AC motor and the necessary components for realizing the forward and reverse rotation of the single-phase AC motor. The direction of rotation is changed by exchanging the wiring at both ends of the main winding and the auxiliary winding. Its specific structure and working principle are common technologies in the prior art (such as the motor structure used in washing machines). It can realize the fixed-circle forward and reverse rotation of the connecting rod 6, avoiding the oil pipe 15 from breaking due to excessive winding of the lubrication structure. Its specific structure and working principle will not be explained in detail here. The mounting structure includes a mounting box 9 with an open bottom. A movable cover 902 is mounted on the bottom of the mounting box 9 via a rotating shaft, allowing the movable cover 902 to be flipped down and opened. A movable shaft assembly 14 is fixedly mounted on the top of the mounting box 9. The movable shaft assembly 14 is connected and fixed to the two sleeves 1 via an adjusting rod 16. A lubricating oil tank 10 is installed inside the mounting box 9. An oil pump 11 is provided on the outside of the mounting box 9. The output end of the oil pump 11 is connected to the inside of the cylinder 201 via an oil extraction pipe 15. The input end of the oil pump 11 extends into the inside of the lubricating oil tank 10. A mounting bracket 12 is welded to one side of the mounting box 9.

[0021] In this embodiment, a connecting pipe 102 is provided on the facing surfaces of the two sleeves 1. A notch 101 is formed on the upper part of the connecting pipe 102. Connecting rings 204 are provided at both ends of the cylinder 201 and are fitted on the outside of the connecting pipe 102. Coaxial bearings are installed on the inner and outer sides of the connecting ring 204. A fixing ring 3 is installed on one side of the notch 101 by bolts. The fixing ring 3 is fitted on the outside of the bearing. In this way, the bearing and the connecting ring 204 are fixed by the fixing ring 3, so that the connecting ring 204 can rotate flexibly between the two bearings.

[0022] In this embodiment, two coaxial support rings 5 ​​are fixedly installed on the outer side of the two sleeves 1. The connecting rod 6 is a cylindrical structure. The connecting rod 6 passes through the support ring 5 and rotates flexibly within the support ring 5. The support ring 5 limits and fixes the connecting rod 6 to prevent the driving gear 7 from disengaging from the driven gear 205.

[0023] In this embodiment, four threaded holes 103 are respectively provided through the opposite ends of the two sleeves 1. The four threaded holes 103 are evenly distributed in a ring on the outside of the sleeves 1. A limiting component 8 is installed in the threaded hole 103. The limiting component 8 includes a threaded rod 801 that is threadedly engaged with the threaded hole 103. A handle 805 is provided at the outer end of the threaded rod 801. An installation seat 802 is installed at the inner end of the threaded rod 801 through a bearing connecting seat. A guide wheel 803 is installed in the installation seat 802. A wing nut 804 is threadedly installed at the outer end of the threaded rod 801. In actual use, the threaded rod 801 is rotated by the handle 805. The threaded engagement between the threaded rod 801 and the threaded hole 103 is used to adjust the position of the guide wheel 803 in the sleeve 1 until the four guide wheels 803 limit and fix the wire rope on the central axis of the sleeve 1. At the same time, the wing nut 804 is used to fix the threaded rod 801, which facilitates the lubrication cylinder 2 to brush oil on the wire rope.

[0024] In this embodiment, the top of the mounting box 9 is provided with an oil outlet 901, the opening of the lubricating oil tank 10 extends into the oil outlet 901, and a sealing cover is provided on the top. The oil pump 15 at the input end of the oil pump 11 passes through the sealing cover, and the passage is sealed. The sealing treatment can be, but is not limited to, a glue seal.

[0025] In this embodiment, a latch 905 is provided at the movable cover 902, and a horizontal clamping plate 904 is installed on the inner side of the movable cover 902 through a support screw 903. The diameter of the clamping plate 904 is two-thirds of the diameter of the movable cover 902. This arrangement ensures that the clamping plate 904 does not affect the opening and closing of the movable cover 902. The support screw 903 is threadedly engaged with the movable cover 902, and the top of the support screw 903 is connected to the clamping plate 904 through a bearing seat. A wing nut is provided at the bottom of the support screw 903. This arrangement allows the support screw 903 to push the clamping plate 904 upward to push the lubricating oil cylinder 10, enabling the mounting box 9 to install and fix lubricating oil cylinders 10 of different sizes.

[0026] In this embodiment, the mounting bracket 12 is located on the side of the mounting box 9, and the mounting bracket 12 has mounting holes.

[0027] In this embodiment, the movable shaft assembly 14 includes two semicircular plates fixedly connected to the mounting box 9. A rotatable shaft is installed between the two semicircular plates via bearings. One end of each of the two adjusting rods 16 is fixedly connected to the shaft, and the other end is welded with a connecting block 13. The connecting block 13 is fixedly connected to the two sleeves 1 by bolts. With this arrangement, the two sleeves 1 and the lubrication cylinder 2 can be connected and fixed by the angle-fixed adjusting rods 16 and connecting blocks 13, preventing the sleeves 1 from separating from the lubrication cylinder 2. At the same time, the movable shaft assembly 14 makes the angle between the lubrication structure and the mounting structure adjustable. Thus, when the wire rope deviates slightly, the lubrication structure can deviate along with it, facilitating the lubrication of the wire rope.

[0028] Working principle: In practical use, the wire rope is inserted through one end of the sleeve 1, passes through the lubrication cylinder 2, and then exits through the other sleeve 1. The wire rope is fixed at the center of the sleeve 1 by the limiting component 8. The position of the lubrication structure on the wire rope is adjusted, and the mounting bracket 12 is fixed with bolts, thus securing the mounting structure and further limiting and fixing the lubrication structure. When the wire rope moves within the lubrication structure, the oil pump 11 and the single-phase AC motor 4 are started. The oil pump 11 pumps the lubricating oil from the oil tank through the oil extraction pipe 15. The lubricating oil in the cylinder 201 is fed into the cylinder body 201 and flows through the lubrication cylinder 2 to the surface of the lubrication bristles 202. At the same time, the single-phase AC motor 4 drives the connecting rod 6 to rotate forward or backward in a regular manner. The connecting rod 6 drives the lubrication cylinder 2 to rotate forward or backward in a regular manner through the meshing between the driving gear 7 and the driven gear 205 (the number of rotations in both directions is fixed to avoid the oil suction pipe 15 from being wrapped around the lubrication structure too many times and breaking). This allows the lubrication bristles 202 to rotate and brush the wire rope with oil in a regular manner, making the oil brushing more even and avoiding the occurrence of lubrication dead spots.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic lubrication structure for wire ropes of container cranes used in ports, characterized in that: The system includes a lubrication structure and an installation structure. The lubrication structure includes two coaxial sleeves (1), through which a steel wire rope passes. A rotatable lubrication cylinder (2) is coaxially installed between the two sleeves (1). The lubrication cylinder (2) includes a hollow cylinder (201). Lubrication bristles (202) are provided on the inner side of the cylinder (201), and lubrication holes (203) are opened on the inner wall of the cylinder (201). A driven gear (205) is provided on the outer surface of the cylinder (201). A single-phase AC motor (4) is installed on one of the sleeves (1). A connecting rod (6) is connected to the output end of the single-phase AC motor (4). A drive gear (7) that meshes with the driven gear (205) is fixedly installed on the connecting rod (6). The mounting structure includes a mounting box (9) with an open bottom. A movable cover (902) is mounted on the bottom of the mounting box (9) via a rotating shaft. A movable shaft assembly (14) is fixedly mounted on the top of the mounting box (9). The movable shaft assembly (14) is connected and fixed to the two sleeves (1) via an adjusting rod (16). A lubricating oil tank (10) is installed inside the mounting box (9). An oil pump (11) is installed on the outside of the mounting box (9). The output end of the oil pump (11) is connected to the inside of the cylinder (201) via an oil extraction pipe (15). The input end of the oil pump (11) extends into the inside of the lubricating oil tank (10). A mounting bracket (12) is welded to one side of the mounting box (9).

2. The automatic lubrication structure for wire ropes of container cranes used in port quay cranes according to claim 1, characterized in that: A connecting pipe (102) is provided on the facing surfaces of the two sleeves (1). A notch (101) is formed above the connecting pipe (102). A connecting ring (204) is provided at both ends of the cylinder (201) and is fitted on the outside of the connecting pipe (102). Coaxial bearings are installed on the inner and outer sides of the connecting ring (204). A fixing ring (3) is installed on one side of the notch (101) by bolts. The fixing ring (3) is fitted on the outside of the bearing.

3. The automatic lubrication structure for wire ropes of container cranes used in port quay cranes according to claim 1, characterized in that: Two coaxial support rings (5) are fixedly installed on the outside of the two sleeves (1). The connecting rod (6) is a cylindrical structure. The connecting rod (6) passes through the support ring (5) and rotates inside the support ring (5).

4. The automatic lubrication structure for wire ropes of container cranes for port quay cranes according to claim 1, characterized in that: The two sleeves (1) are respectively provided with four threaded holes (103) at opposite ends. The four threaded holes (103) are evenly distributed in a ring on the outside of the sleeves (1). Limiting components (8) are installed in the threads of the threaded holes (103).

5. The automatic lubrication structure for wire ropes of container cranes for port quay cranes according to claim 4, characterized in that: The limiting assembly (8) includes a threaded rod (801) that is threaded to the threaded hole (103). The outer end of the threaded rod (801) is provided with a handle (805). The inner end of the threaded rod (801) is mounted with a mounting seat (802) through a bearing connecting seat. A guide wheel (803) is installed in the mounting seat (802). A wing nut (804) is threadedly installed at the outer end of the threaded rod (801).

6. The automatic lubrication structure for wire ropes of container cranes for port quay cranes according to claim 1, characterized in that: The top of the mounting box (9) is provided with an oil outlet (901), the opening of the lubricating oil tank (10) extends into the oil outlet (901), and a sealing cover is provided on the top. The oil pump (11) input pipe (15) passes through the sealing cover, and the passage is sealed.

7. The automatic lubrication structure for wire ropes of container cranes for port quay cranes according to claim 1, characterized in that: A latch (905) is provided at the movable cover (902), and a horizontal clamping plate (904) is installed on the inner side of the movable cover (902) through a support screw (903). The diameter of the clamping plate (904) is two-thirds of the diameter of the movable cover (902). The support screw (903) is threadedly engaged with the movable cover (902), and the top of the support screw (903) is connected to the clamping plate (904) through a bearing seat. A wing nut (804) is provided at the bottom of the support screw (903).

8. The automatic lubrication structure for wire ropes of container cranes for port quay cranes according to claim 1, characterized in that: The mounting bracket (12) is located on the side of the mounting box (9), and mounting holes are provided on the mounting bracket (12).

9. The automatic lubrication structure for wire ropes of container cranes for port quay cranes according to claim 1, characterized in that: The movable shaft assembly (14) includes two semicircular plates that are fixedly connected to the mounting box (9). A rotatable shaft is installed between the two semicircular plates via bearings. One end of each of the two adjusting rods (16) is fixedly connected to the shaft, and the other end is welded with a connecting block (13). The connecting block (13) is fixedly connected to the two sleeves (1) respectively by bolts.

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