Lubricating device and crane

Abstract

The application relates to the technical field of engineering machinery, and discloses a lubricating device and a crane. The disclosed lubricating device is used for lubricating a rope with a concave-convex surface. The lubricating device comprises an oil storage tank and a piston rod. The oil storage tank is used for storing liquid lubricating medium. The piston rod is provided with an oil outlet channel. The piston rod is movably connected with the oil storage tank. The piston rod is used for being in contact with the concave-convex surface of the rope and moving relative to the oil storage tank with the change of the contact position of the concave-convex surface of the rope, so that the oil outlet and the stop of the oil outlet of the oil outlet channel are realized. The application can solve the problem of poor lubricating effect of the rope lubricated by lubricating grease.

Description

Technical Field

[0001] This application relates to the field of engineering machinery technology, specifically to a lubrication device and a crane. Background Technology

[0002] Ropes are widely used in various fields during production, especially steel wire ropes, which are widely used in metallurgy, oil and gas drilling and extraction, cranes and other machinery, chemical industry, aerospace, and mining development. Proper lubrication of ropes can extend their service life, and related technologies typically use grease lubrication. However, grease lubrication is difficult to reach the rope core, resulting in poor lubrication effectiveness. Summary of the Invention

[0003] In view of this, this application provides a lubrication device and a crane to solve the problem of poor lubrication effect when using grease to lubricate ropes in related technologies.

[0004] To achieve the above objectives, this application provides the following technical solution:

[0005] A lubrication device for lubricating a rope with an uneven surface, the lubrication device comprising an oil reservoir and a piston rod, wherein:

[0006] The oil reservoir is used to store liquid lubricating medium. The piston rod is provided with an oil outlet channel. The piston rod is movably connected to the oil reservoir. The piston rod is used to contact the concave and convex surfaces of the rope and moves relative to the oil reservoir as the contact position with the concave and convex surfaces of the rope changes, so as to realize the oil outlet channel to open and close the oil outlet.

[0007] Optionally, the oil reservoir has an inner cavity for containing liquid lubricating medium;

[0008] The piston rod is movably connected to the oil reservoir. The first end of the piston rod is located inside the inner cavity, and the second end of the piston rod is located outside the inner cavity. The oil outlet channel includes a connected oil inlet and an oil outlet, and the oil outlet is located outside the inner cavity.

[0009] The change in the contact position between the piston rod and the concave and convex surfaces of the rope can drive the piston rod to switch between a first position and a second position. The first position refers to the position of the piston rod when oil is flowing from the oil outlet channel, and the second position refers to the position of the piston rod when oil stops flowing from the oil outlet channel.

[0010] In the first position, the oil inlet is located inside the inner cavity, and oil is discharged from the oil outlet; in the second position, the oil inlet is located outside the inner cavity, and oil discharge from the oil outlet channel stops.

[0011] Optionally, the lubrication device further includes a lever assembly, which includes a first mounting member and a lever. The lever is rotatably mounted at a designated mounting position via the first mounting member, and the distance between the first mounting member and the first end of the lever is less than the distance between the first mounting member and the second end of the lever.

[0012] The first end of the lever is used to contact the concave and convex surfaces of the rope and reciprocates as the contact position with the concave and convex surfaces of the rope changes. The second end of the lever cooperates with the piston rod, and the reciprocating movement of the second end of the lever drives the piston rod to switch between the first position and the second position.

[0013] Optionally, the lubrication device further includes a state adjustment component connected to the piston rod, used to drive the piston rod to switch between a first state and a second state. The first state refers to the state of the piston rod when the lubrication device is in a working state, and the second state refers to the state of the piston rod when the lubrication device is in a non-working state. In the first state, the piston rod is located in the first position or the second position, and in the second state, the piston rod is located in the third position.

[0014] In the third position, the oil inlet is located outside the inner cavity, and the distance between the oil inlet and the cavity wall of the inner cavity is a; in the second position, the distance between the oil inlet and the cavity wall of the inner cavity is b, and a is greater than b.

[0015] Optionally, the state adjustment assembly includes a first elastic element, a fixed pulley, a collar, and a first pull rope;

[0016] One end of the first elastic element is connected to the cavity wall of the inner cavity, and the other end is connected to the piston rod. The fixed pulley is used to be rotatably installed in a designated installation position. The collar is used to be movably fitted onto the outer wall of the rope. The first end of the first pull rope is connected to the collar, and the second end passes around the fixed pulley and is connected to the piston rod. The part of the first pull rope located between the fixed pulley and the piston rod is in the same direction as the movement of the piston rod.

[0017] When the rope is in an inactive state, the rope hangs down, and the hanging rope can pull the piston rod to the third position through the collar and the first pull rope, causing the first elastic element to undergo elastic deformation.

[0018] When the rope is in the working state, the rope is taut, and the first elastic element recovers its deformation to drive the piston rod to move to the first position or the second position.

[0019] Optionally, the state adjustment component includes a first elastic element, a magnetic element, and an electromagnetic element;

[0020] One end of the first elastic element is connected to the cavity wall of the inner cavity, and the other end is connected to the piston rod. Among the magnetic element and the electromagnetic element, one is disposed on the piston rod and located outside the oil reservoir, and the other is used to be fixedly installed at a designated installation position.

[0021] When the electromagnetic component is energized, the electromagnetic component and the magnetic component attract each other, driving the piston rod to move to the third position, and the first elastic component undergoes elastic deformation.

[0022] When the electromagnetic component is de-energized, the magnetic component separates from the electromagnetic component, the first elastic component recovers its deformation, and drives the piston rod to move to the first position or the second position.

[0023] Optionally, the lubrication device further includes a ratchet and pawl mechanism and a cam, wherein the pawl of the ratchet and pawl mechanism is hinged to the second end of the lever, and the cam is connected to the ratchet of the ratchet and pawl mechanism so that the ratchet drives the cam to rotate;

[0024] The cam can abut against the piston rod. When the cam abuts against the piston rod, the piston rod is in the first position when the cam is at the far repose angle, and in the second position when the cam is outside the far repose angle.

[0025] Optionally, the state adjustment assembly includes a first elastic element, a connecting rod, a magnetic element, an electromagnetic element, and a third elastic element;

[0026] One end of the first elastic element is connected to the cavity wall of the inner cavity, and the other end is connected to the piston rod. The first end of the connecting rod is rotatably connected to the second end of the piston rod. Of the magnetic element and the electromagnetic element, one is provided on the connecting rod, and the other is used to be installed in a designated installation position. One end of the third elastic element is connected to the piston rod, and the other end is connected to the connecting rod.

[0027] When the electromagnetic component is energized, the electromagnetic component and the magnetic component attract each other, the connecting rod separates from the cam, the first elastic component recovers its deformation and drives the piston rod to the third position, and the third elastic component generates elastic deformation;

[0028] When the electromagnetic component is de-energized, the magnetic component separates from the electromagnetic component, and the third elastic component recovers its deformation to drive the connecting rod to abut against the cam and drive the connecting rod to be located on the extension line of the piston rod. The connecting rod drives the piston rod to move to the first position or the second position, and the first elastic component undergoes elastic deformation.

[0029] Optionally, the lubrication device further includes multiple limiting mechanisms, which are spaced apart along the direction of rope movement in the working state. Each limiting mechanism includes two detachably connected limiting blocks, and the surface of each limiting block is provided with a through groove. The through grooves of the two limiting blocks face each other to form a through hole for the rope to pass through.

[0030] A crane includes a rope and a lubrication device, the rope having an uneven surface, the lubrication device being used to lubricate the rope, the lubrication device including the lubrication device described above.

[0031] During the lubrication of the rope using the lubrication device of this application, the change in the contact position between the piston rod and the rope drives the piston rod to move, causing the oil outlet channel to switch between oil discharge and no oil discharge. When oil is discharged from the oil outlet channel, the lubricating oil in the oil tank flows out to lubricate the rope, achieving oil lubrication of the rope. The oil lubrication can wet the rope core, resulting in a better lubrication effect. Therefore, this application can solve the problem of poor lubrication effect when using grease to lubricate ropes in related technologies. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of a first type of lubrication device provided in the first position according to an embodiment of this application.

[0034] Figure 2 This is a schematic diagram of the structure of the first type of lubrication device provided in the embodiments of this application in the second position.

[0035] Figure 3 This is a schematic diagram of the structure of the first type of lubrication device provided in the embodiments of this application in the third position.

[0036] Figure 4 This is a schematic diagram of the structure of a second type of lubrication device provided in the first position according to an embodiment of this application.

[0037] Figure 5 This is a schematic diagram of the structure of the second type of lubrication device provided in the second position according to the embodiments of this application.

[0038] Figure 6 This is a schematic diagram of the structure of the second type of lubrication device provided in the embodiments of this application in the third position.

[0039] Figure 7 This is a schematic diagram of the structure of the third type of lubrication device provided in the first position according to the embodiments of this application.

[0040] Figure 8 This is a schematic diagram of the third type of lubrication device provided in the embodiments of this application in the second position.

[0041] Figure 9 This is a schematic diagram of the third type of lubrication device provided in the embodiments of this application in a third position.

[0042] Explanation of reference numerals in the attached figures:

[0043] 100. Oil reservoir; 110. Inner cavity;

[0044] 200. Piston rod; 210. First oil groove;

[0045] 310. First mounting component; 320. Lever; 321. Second oil tank; 330. Flow guide;

[0046] 410. First elastic element; 420. Fixed pulley; 430. Collar; 440. First pull rope; 450. Second elastic element; 460. Magnetic element; 470. Electromagnetic element; 480. Connecting rod; 490. Third elastic element; 4100. Second pull rope;

[0047] 500. Ratchet and pawl mechanism; 510. Pawl; 520. Ratchet;

[0048] 600, Cam;

[0049] 710. First rolling element; 720. Second rolling element;

[0050] 800. Limiting mechanism; 810. Limiting block;

[0051] 900. Liquid level sensor;

[0052] 1000, rope. Detailed Implementation

[0053] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0054] like Figures 1 to 9As shown in the figure, this application provides a lubrication device for lubricating a rope 1000 with an uneven surface. The uneven surface of the rope 1000 has staggered ridges and grooves, such as a wire rope. The wire rope is made of multiple steel wires twisted together, making the surface of the wire rope uneven.

[0055] The lubrication device includes an oil reservoir 100 and a piston rod 200. The oil reservoir 100 has an inner cavity 110 for containing a liquid lubricating medium (e.g., lubricating oil) for storing the liquid lubricating medium.

[0056] The piston rod 200 is provided with an oil outlet channel. The piston rod 200 is movably connected to the oil reservoir 100. The piston rod 200 is used to contact the concave and convex surfaces of the rope 1000. The piston rod 200 can move relative to the oil reservoir 100 as the contact position with the concave and convex surfaces of the rope 1000 changes, so as to realize the oil outlet channel to open and close the oil outlet channel. When the oil outlet channel is open, the lubricating oil in the oil reservoir 100 flows out through the oil outlet channel and drips onto the rope 1000 to lubricate the rope 1000.

[0057] The surface of the rope 1000 has staggered ridges and grooves. The radial distances of the surfaces of the ridges and grooves from the axis of the rope 1000 are different. The radial distances of the piston rod 200 from the axis of the rope 1000 when it contacts the ridges are different from the radial distances of the piston rod 200 from the axis of the rope 1000 when it contacts the grooves. Therefore, the change in the contact position between the piston rod 200 and the rope 1000 can drive the piston rod 200 to reciprocate relative to the oil reservoir 100.

[0058] During the process of lubricating the rope 1000 using the lubrication device, the lubrication device is installed in the designated installation position. When the rope 1000 moves, the rope 1000 and the piston rod 200 move relative to each other, so that the contact position between the piston rod 200 and the rope 1000 switches back and forth between the convex ridge and the groove, driving the piston rod 200 to move relative to the oil reservoir 100.

[0059] During the lubrication of the rope 1000 using the lubrication device of this embodiment, the change in the contact position between the piston rod 200 and the rope 1000 drives the piston rod 200 to move, causing the oil outlet channel to switch between oil outlet and no oil outlet. When oil is outletped, the lubricating oil in the oil reservoir 100 flows out to lubricate the rope 1000, achieving oil lubrication of the rope 1000. The oil lubrication can wet the rope core, resulting in a good lubrication effect. Therefore, this application can solve the problem of poor lubrication effect when using grease to lubricate ropes in related technologies.

[0060] Furthermore, by using the lubrication device in this embodiment to lubricate the rope 1000, the oil outlet channel switches back and forth between oiling and stopping, achieving intermittent oiling, which can reduce the oiling frequency and reduce the waste of lubricating oil.

[0061] There are various structures that enable and stop oil discharge through the oil outlet channel by moving the piston rod 200 relative to the oil reservoir 100.

[0062] In one optional embodiment, the oil tank 100 may be provided with an oil outlet communicating with the inner cavity and a one-way switch. The first end of the one-way switch is rotatably connected to the oil outlet, and the second end can rotate around the first end toward the inside of the inner cavity. The oil outlet is provided with a limiting member, and the one-way switch is mounted on the limiting member to block the oil outlet.

[0063] The piston rod 200 is rotatably connected to the one-way switch via a shaft. Movement of the piston rod 200 causes the one-way switch to rotate. When the piston rod 200 moves closer to the inner cavity, it opens the one-way switch, and the oil outlet channel of the piston rod 200 is immersed in the lubricating oil within the inner cavity, allowing oil to flow out. When the piston rod 200 moves away from the inner cavity, it causes the one-way switch to mount on the limiting component, blocking the oil outlet. The oil outlet channel of the piston rod 200 and the inner cavity are isolated from each other by the one-way switch, thus stopping oil flow.

[0064] In another optional embodiment, the first end of the piston rod 200 may be located inside the inner cavity 110, and the second end of the piston rod 200 may be located outside the inner cavity 110. The oil outlet channel includes an oil inlet, a first oil groove 210 and an oil outlet. The oil inlet and the oil outlet are connected through the first oil groove 210, and the oil outlet is located outside the inner cavity 110.

[0065] The piston rod 200 is movably disposed in the oil reservoir 100 so that the piston rod 200 switches between a first position and a second position relative to the oil reservoir 100 as the contact position with the concave and convex surfaces of the rope 1000 changes. The first position refers to the position of the piston rod 200 when oil is flowing from the oil outlet channel, and the second position refers to the position of the piston rod 200 when oil stops flowing from the oil outlet channel.

[0066] In the first position, the oil inlet is located inside the inner cavity 110, and the lubricating oil in the inner cavity 110 flows sequentially through the oil inlet, the first oil groove 210, and the oil outlet to the outside of the oil reservoir 100, and oil is discharged from the oil outlet channel. In the second position, the oil inlet is located outside the inner cavity 110, and oil cannot be discharged from the oil outlet, and oil discharge from the oil outlet channel stops.

[0067] In practical use, in order to ensure that the lubricating oil in the oil tank 100 can flow out smoothly and onto the rope 1000, the lubrication device can be installed above the rope 1000.

[0068] In an alternative embodiment, when lubricating the rope 1000 using a lubrication device, the piston rod 200 may be in direct contact with the rope 1000.

[0069] In another optional embodiment, in order to increase the travel of the piston rod 200 when the contact position with the rope 1000 changes, the lubrication device may further include a lever assembly. The lever assembly may include a first mounting member 310 and a lever 320. The first mounting member 310 may be a hinge seat, and the lever 320 may be hinged to the first mounting member 310. The first mounting member 310 may be fixedly installed at a designated installation position so that the lever 320 is rotatably installed at the designated installation position through the first mounting member 310. The distance between the first mounting member 310 and the first end of the lever 320 is less than the distance between the first mounting member 310 and the second end of the lever 320.

[0070] The first end of lever 320 abuts against the rope 1000, contacting the uneven surface of the rope 1000, and reciprocates as the contact position with the uneven surface changes. The second end of lever 320 can cooperate with piston rod 200, so that piston rod 200 makes transmission contact with the uneven surface of rope 100 through lever 320. The first end of lever 320 can reciprocate relative to oil reservoir 100 as the contact position with the uneven surface changes. The reciprocating movement of the first end of lever 320 can drive the second end of lever 320 to reciprocate, and the reciprocating movement of the second end of lever 320 can drive piston rod 200 to switch between a first position and a second position. Optionally, the second end of lever 320 can be hinged to piston rod 200.

[0071] In this structure, when the contact position between the first end of the lever 320 and the concave and convex surfaces of the rope 1000 changes, the lever 320 will rotate around the hinge position with the first mounting member 310. The displacement of the second end of the lever 320 is greater than the displacement of the first end of the lever 320. This increases the displacement of the piston rod 200 when it contacts the concave and convex surfaces at different positions through the lever assembly, which helps to switch the position of the oil inlet between the inside and outside of the inner cavity 110.

[0072] When the lubrication device of this application is used to lubricate the rope 1000, the first end of the lever 320 abuts against the rope 1000 and contacts the rope 1000. During the movement of the rope 1000, the contact position between the lever 320 and the rope 1000 changes. During the process of the contact position between the lever 320 and the rope 1000 changing from the convex ridge to the groove, the lever 320 rotates around the first mounting member 310, driving the piston rod 200 to move to the first position. When the piston rod 200 contacts the groove, the piston rod 200 is in the first position, the oil inlet is in the inner cavity 110, the oil inlet is immersed in the lubricating oil, so that oil comes out of the oil inlet and oil comes out of the oil outlet channel.

[0073] During the process of switching the contact position between lever 320 and rope 1000 from groove to convex, lever 320 rotates around first mounting part 310, driving piston rod 200 to move to second position until piston rod 200 contacts convex. At the second position, piston rod 200 is located outside inner cavity 110, oil inlet is outside oil outlet, and oil outlet cannot output oil, and oil outlet channel stops outputting oil.

[0074] In an alternative embodiment, when lubricating the rope 1000 using a lubrication device, the lever 320 may be in direct contact with the rope 1000.

[0075] In another alternative embodiment, the first end of the lever 320 is rotatably provided with a first rolling element 710 via a pivot. The first rolling element 710 can be a roller, and it is used to contact the uneven surface of the rope 1000, so that the lever 320 indirectly contacts the rope 1000 through the first rolling element 710. In this structure, during the process of lubricating the rope 1000 using a lubrication device, the first rolling element 710 contacts the rope 1000. During the relative movement of the rope 1000 and the lubrication device, the first rolling element 710 and the rope 1000 roll together, reducing wear on the rope 1000 and the lever 320.

[0076] In a further technical solution, in this embodiment of the application, the lubrication device may further include a state adjustment component, which is connected to the piston rod 200 and is used to drive the piston rod 200 to switch between a first state and a second state. The first state refers to the state of the piston rod 200 when the lubrication device is in the working state, and the second state refers to the state of the piston rod 200 when the lubrication device is in the non-working state.

[0077] In the first state, the piston rod 200 is in the first or second position, and the lubrication device is in working condition. In the second state, the piston rod 200 is in the third position. In the third position, the oil inlet is outside the inner cavity 110, and the distance between the oil inlet and the cavity arm of the inner cavity 110 is a. In the second position, the distance between the oil inlet and the cavity arm of the inner cavity 110 is b. Since a is greater than b, the lubrication device is in non-working condition.

[0078] In this case, the state of the piston rod 200 can be adjusted by the state adjustment component, thereby adjusting the state of the lubrication device. When the lubrication device does not need to work, the lubrication device can be adjusted to the second state by the state adjustment component to prevent oil leakage from the lubrication device, avoid waste of lubricating oil, and improve the reliability of the lubrication device.

[0079] There are various structures for the state adjustment component; please refer to this document for one alternative embodiment. Figures 1 to 3 The state adjustment component may include a first elastic element 410, a collar 430, and a first pull rope 440.

[0080] The first elastic element 410 can be a spring or an elastic column. One end of the first elastic element 410 can be fixedly connected to the cavity wall of the inner cavity 110 by means of bonding, bolting, snapping, welding, etc., and the other end can be fixedly connected to the piston rod 200 by the above connection methods. The collar 430 is used to movably fit on the outer wall of the rope 1000. That is, there is a gap between the inner ring of the collar 430 and the outer wall of the rope 1000. During the axial movement of the rope 1000, the collar 430 can remain stationary with the rope 1000. The first end of the first pull rope 440 can be connected to the collar 430, and the second end can be connected to the piston rod 200.

[0081] When the rope 1000 is not in operation, due to the reduction of axial force, the rope 1000 will sag. The sag of the rope 1000 can pull the piston rod 200 to the third position through the collar 430 and the first pull rope 440. The first elastic element 410 extends, generates elastic deformation, and accumulates the potential energy to recover the deformation.

[0082] When the rope 1000 is in the working state, the rope 1000 is taut, the tension of the collar 430 and the first pull rope 440 on the piston rod 200 decreases or disappears, the first elastic element 410 recovers its deformation under the action of the accumulated potential energy, and the first elastic element 410 retracts to drive the piston rod 200 to move to the first position or the second position.

[0083] With this structure, no additional power source is required for either the switching of the lubrication device between working and non-working states (i.e., the first state and the second state) or the switching of the lubrication device between oil outlet and oil non-outlet states (i.e., the first position and the second position) during the working state, which can reduce the cost of the lubrication device.

[0084] To improve the positional stability of the collar 430 and thus provide sufficient tension to the piston rod 200, the collar 430 can be connected to the second mounting seat via the second pull rope 4100. When the rope 1000 is lubricated using a lubrication device, the second mounting seat can be installed in a designated mounting position.

[0085] The state adjustment assembly may also include a second elastic element 450, which is a spring or an elastic column. One end of the second elastic element 450 is connected to the second pull rope 4100 or the collar 430, and the other end can be connected to a designated installation position via a third mounting member when the rope 1000 is lubricated using a lubrication device. When the rope 1000 is hanging, the second elastic element 450 extends, generates elastic deformation, and accumulates the potential energy to recover the deformation. As the rope 1000 gradually tensions from the hanging state, the second elastic element 450 recovers its deformation, restoring the auxiliary rope 1000 to the tensioned position.

[0086] In a further technical solution, the state adjustment component may also include a fixed pulley 420, which is rotatably mounted in a designated installation position via a fourth mounting member (e.g., a hinged seat). A first end of a first pull rope 440 is connected to a collar 430, and a second end passes around the fixed pulley 420 and is connected to the piston rod 200. A portion of the first pull rope 440 located between the fixed pulley 420 and the piston rod 200 is aligned with the direction of movement of the piston rod 200. In this case, it is possible to prevent the first pull rope 440 from pulling the piston rod 200 in a direction intersecting with the set direction of movement of the rope 1000, thus preventing the piston rod 200 from deflecting and improving the movement accuracy of the piston rod 200. It should be noted that the set direction of movement here refers to the direction of movement of the piston rod 200 when switching between the first position (or the second position) and the third position.

[0087] There are various structures for the state adjustment component. In another optional embodiment, please refer again. Figures 4 to 6 The state adjustment component may include a first elastic element 410, a magnetic element 460, and an electromagnetic element 470.

[0088] The first elastic element 410 can be a spring or an elastic column. One end of the first elastic element 410 can be fixedly connected to the cavity wall of the inner cavity 110, and the other end can be fixedly connected to the piston rod 200. Among the magnetic element 460 and the electromagnetic element 470, one can be provided on the piston rod 200 and located outside the oil reservoir 100, while the other is used for fixed installation at a designated installation position. This embodiment has a simpler structure, which helps to simplify the structure of the lubrication device.

[0089] Optionally, the magnetic component 460 can be a permanent magnet, such as a magnet, and the electromagnetic component 470 can be an electromagnetic coil. The magnetic component 460 can be fixedly connected to the second end of the piston rod 200 by means of bonding, welding, bolting, etc. When using a lubrication device to lubricate the rope 1000, the electromagnetic component 470 can be installed at the designated installation position by means of bonding, welding, bolting, etc.

[0090] When the electromagnetic component 470 is energized, the electromagnetic component 470 and the magnetic component 460 attract each other, driving the piston rod 200 to move to the third position. The first elastic component 410 extends, generates elastic deformation, and accumulates the potential energy to recover the deformation.

[0091] When the electromagnetic component 470 is de-energized, the magnetic component 460 separates from the electromagnetic component 470, the first elastic component 410 recovers its deformation, and the first elastic component 410 retracts to drive the piston rod 200 to move to the first position or the second position.

[0092] In the above scheme, the piston rod 200 and the rope 1000 move relative to each other by a set of adjacent protrusions and grooves to form an oil discharge cycle. One oil discharge cycle completes one oil discharge. In this case, the oil discharge cycle is short and the oil discharge frequency is high, which can easily lead to lubricant waste.

[0093] Therefore, please refer to this. Figures 7 to 9 In this embodiment, the lubrication device may further include a ratchet and pawl mechanism 500 and a cam 600. The ratchet and pawl mechanism 500 includes a ratchet 520 and a pawl 510. The pawl 510 is inserted into the tooth groove of the ratchet 520 to achieve the engagement of the ratchet 520 and the pawl 510. The pawl 510 can be hinged to a connecting rod, and the connecting rod can be rotatably connected to the second end of the lever 320 so that the pawl 510 is hinged to the second end of the lever 320. The cam 600 and the ratchet 520 can be fixedly connected by a pin so that the ratchet 520 drives the cam 600 to rotate. Figures 7 to 9 In this context, 'e' represents the eccentricity of cam 600.

[0094] The cam 600 can abut against the piston rod 200. When the cam 600 abuts against the piston rod 200, the piston rod 200 cooperates with the lever 320 through the cam 600, the ratchet and pawl mechanism 500 and the connecting rod.

[0095] When the cam 600 abuts against the piston rod 200, and the rope 1000 moves relative to the lever 320, causing the lever 320 to contact the groove on the concave-convex surface of the rope 1000, the lever 320 drives the pawl 510 to move in the first direction (e.g., vertically upward) via the connecting rod, and the ratchet 520 does not rotate. When the lever 320 contacts the protrusion on the concave-convex surface of the rope 1000, the lever 320 drives the pawl 510 to move in the opposite direction of the first direction (e.g., vertically downward) via the connecting rod, and the pawl 510 drives the ratchet 520 to rotate. The cam 600 rotates with the rotation of the ratchet 520, and the piston rod 200 moves with the rotation of the cam 600, so that the cam 600 drives the piston rod 200 to move between the first position and the second position. When the cam 600 is at the far repose angle, the piston rod 200 is at the first position, and when the cam 600 is outside the far repose angle, the piston rod 200 is at the second position.

[0096] In this structure, one rotation of the ratchet 520 and cam 600 constitutes one oil delivery cycle, and oil is delivered once per cycle. This reduces the oil delivery frequency and alleviates the problem of lubricant waste. Furthermore, in this structure, when the number of teeth on the ratchet 520 is n, the lever 320 passes through an adjacent set of protrusions and grooves on the rope 1000 n times. Therefore, changing the number of teeth on the ratchet 520 allows for adjustment of the oil delivery cycle.

[0097] Optionally, in order to ensure good contact between the cam 600 and the piston rod 200, the cam 600 may be located on the extension line of the piston rod 200.

[0098] Please refer to this again. Figures 7 to 9 When the lubrication device includes a ratchet and pawl mechanism 500 and a cam 600, the state adjustment component may include a first elastic element 410, a connecting rod 480, a magnetic element 460, and an electromagnetic element 470.

[0099] The first elastic element 410 can be a spring or an elastic column. One end of the first elastic element 410 can be fixedly connected to the cavity wall of the inner cavity 110, and the other end can be fixedly connected to the piston rod 200. The first end of the connecting rod 480 can be rotatably connected to the second end of the piston rod 200. Among the magnetic element 460 and the electromagnetic element 470, one can be provided on the connecting rod 480, and the other is used to be installed at a designated installation position when the rope 1000 is lubricated using a lubrication device.

[0100] When the electromagnetic component 470 is energized, the electromagnetic component 470 and the magnetic component 460 attract each other, the connecting rod 480 separates from the cam 600, and the first elastic component 410 restores its deformation to drive the piston rod 200 to move to the third position.

[0101] When the electromagnetic component 470 is de-energized, the magnetic component 460 separates from the electromagnetic component 470, the connecting rod 480 abuts against the cam 600, and drives the piston rod 200 to move to the first position or the second position. At this time, the first elastic component 410 can be compressed to generate elastic deformation and accumulate potential energy to recover deformation. When the electromagnetic component 470 is energized, it drives the piston rod 200 to move to the third position.

[0102] In a further technical solution, the state switching component may also include a third elastic element 490, which may be a spring or an elastic column. One end of the third elastic element 490 may be rotatably connected to the piston rod 200 through a hinge seat and a rotating shaft, and the other end may be rotatably connected to the connecting rod 480 through a hinge seat and a rotating shaft.

[0103] When the electromagnetic component 470 is energized, the third elastic component 490 elongates and undergoes elastic deformation, accumulating potential energy to recover its deformation. When the electromagnetic component 470 is de-energized, the third elastic component 490 recovers its deformation, driving the connecting rod 480 to abut against the cam 600. When the third elastic component 490 is at its original length, its extension direction can be aligned with the extension direction of the piston rod 200, so that the third elastic component 490 can drive the connecting rod 480 to be located on the extension line of the piston rod 200, and the cam 600 is also located on the extension line of the piston rod 200, ensuring contact between the piston rod 200, the connecting rod 480, and the cam 600.

[0104] In this case, the third elastic element 490 can not only assist the connecting rod 480 in resetting, but also improve the positional stability of the connecting rod 480 when the lubrication device is in the first state, ensuring the contact between the piston rod 200, the connecting rod 480 and the cam 600, and improving the reliability of the lubrication device.

[0105] The second end of the connecting rod 480 can directly contact the cam 600. Alternatively, the second end of the connecting rod 480 can also be rotatably provided with a second rolling element 720 via a pivot. In this case, the wear between the connecting rod 480 and the cam 600 can be reduced, thus extending the life of the lubrication device. Optionally, the second rolling element 720 can be a roller.

[0106] In the above embodiment, the piston rod 200 has an oil outlet. When oil is discharged from the oil outlet, the rope 1000 can be lubricated. In order for the lubricating oil flowing out of the oil outlet to drip onto the rope 1000 and lubricate the rope 1000, the vertical height of the oil tank 100 and the piston rod 200 can be higher than the vertical height of the rope 1000, and the piston rod 200 can be located directly above the rope 1000 so that the lubricating oil flowing out of the oil outlet can drip onto the rope 1000.

[0107] However, the above embodiments require high positional accuracy between the piston rod 200 and the rope 1000. Therefore, in this embodiment, the lever 320 may be provided with a second oil groove 321, which may be aligned with the oil outlet so that the second oil groove 321 communicates with the oil outlet.

[0108] Alternatively, the lubrication device may also include a guide member 330, one end of which can be connected to the piston rod 200 and communicate with the oil outlet (or the first oil groove 210 of the piston rod 200), and the other end can be connected to the lever 320 and communicate with the second oil groove 321, so that the second oil groove 321 communicates with the oil outlet. The second oil groove 321 extends from the first end to the second end of the lever 320. In this case, the lubricating oil can flow more accurately into the rope 1000, reducing lubricating oil waste, and the accuracy requirements for the positional relationship between the rope 1000 and the piston rod 200 are low.

[0109] Optionally, the flow guide 330 can be a flow guide pipe, or the flow guide 330 can be a flow guide rod with a flow guide groove.

[0110] During the operation of the rope 1000, the rope 1000 may sway or jump. The swaying or jumping of the rope 1000 may cause the rope 1000 to separate from the lubrication device (specifically, it may separate from the first rolling element 710 of the lubrication device), resulting in lubrication failure.

[0111] To address the aforementioned issues, in this embodiment, the lubrication device may further include multiple limiting mechanisms 800. These limiting mechanisms 800 are spaced apart along the direction of movement of the rope 1000 during operation. Each limiting mechanism 800 has a through hole for the rope 1000 to pass through, and the piston rod 200 is located between two adjacent limiting mechanisms 800. In this case, the limiting mechanisms 800 limit the rope 1000, restricting its range of movement and preventing excessive shaking or jumping. This ensures that even if the rope 1000 moves within its range of movement, it will not separate from the lubrication device (specifically, the first rolling element 710), thus improving the reliability of the lubrication device.

[0112] When the rope 1000 passes through the perforation, the rope 1000 and the perforation can be radially restrained. In this case, excessive swaying or jumping of the rope 1000 is prevented, which not only prevents the rope 1000 from separating from the lubrication device, but also ensures that the position of the axis of the rope 1000 remains constant or undergoes a slight change, thereby improving the reliability of the piston rod 200 moving with changes in the contact position with the rope 1000.

[0113] In a further technical solution, the limiting mechanism 800 may include two limiting blocks 810 detachably connected by bolts. The surfaces of the limiting blocks 810 are provided with through slots, and the through slots of the two limiting blocks 810 face each other to form a through hole. This structure facilitates changing the engagement position between the limiting mechanism 800 and the rope 1000.

[0114] In this embodiment of the application, the lubrication device may further include a liquid level sensor 900, which is disposed in the oil storage tank 100 and is used to detect the liquid level of the liquid lubricating medium in the oil storage tank 100 so as to add lubricating oil to the oil storage tank 100 in a timely manner.

[0115] It should be noted that the specified installation position mentioned above varies with the installation position of the lubrication device. For example, when the lubrication device needs to lubricate the wire rope of a crane or other working machinery, the lubrication device can be installed on the working machinery, and the specified installation position can be the corresponding position of the working machinery.

[0116] Based on the above-described lubrication device, this application embodiment also provides a crane, which includes a rope 1000 and the above-described lubrication device. The rope 1000 has an uneven surface, and the lubrication device is used to lubricate the rope 1000. Since the crane has the above-described lubrication device, the beneficial effects of the crane brought by the lubrication device can be found in the above content, and will not be repeated here.

[0117] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0118] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0119] It should also be noted that in the apparatus, equipment, and methods of this application, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this application.

[0120] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0121] It should be understood that the qualifiers “first,” “second,” “third,” “fourth,” “fifth,” and “sixth” used in the description of the embodiments of this application are only used to more clearly illustrate the technical solutions and are not intended to limit the scope of protection of this application.

[0122] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A lubricating device, characterized in that For lubricating a rope (1000) with an uneven surface, the lubrication device includes an oil reservoir (100) and a piston rod (200), wherein: The oil reservoir (100) is used to store liquid lubricating medium. The piston rod (200) is provided with an oil outlet channel. The piston rod (200) is movably connected to the oil reservoir (100). The piston rod (200) is used to contact the concave and convex surfaces of the rope (1000) and moves relative to the oil reservoir (100) as the contact position with the concave and convex surfaces of the rope (1000) changes, so as to realize the oil outlet channel to open and close the oil outlet. The oil reservoir (100) has an inner cavity (110) for containing liquid lubricating medium. The piston rod (200) is movably connected to the oil reservoir (100). The first end of the piston rod (200) is located inside the inner cavity (110), and the second end of the piston rod (200) is located outside the inner cavity (110). The oil outlet channel includes a connected oil inlet and an oil outlet, and the oil outlet is located outside the inner cavity (110). The change in the contact position between the piston rod (200) and the concave and convex surfaces of the rope (1000) can drive the piston rod (200) to switch between a first position and a second position. The first position refers to the position of the piston rod (200) when oil is flowing from the oil outlet channel, and the second position refers to the position of the piston rod (200) when oil stops flowing from the oil outlet channel. In the first position, the oil inlet is located inside the inner cavity (110), and oil is discharged from the oil outlet; in the second position, the oil inlet is located outside the inner cavity (110), and oil is stopped from being discharged from the oil outlet channel. The lubrication device further includes a lever assembly, which includes a first mounting member (310) and a lever (320). The lever (320) is rotatably mounted at a designated installation position via the first mounting member (310). The distance between the first mounting member (310) and the first end of the lever (320) is less than the distance between the first mounting member (310) and the second end of the lever (320). The first end of the lever (320) is used to contact the concave and convex surfaces of the rope (1000) and reciprocates as the contact position with the concave and convex surfaces of the rope (1000) changes. The second end of the lever (320) cooperates with the piston rod (200). The reciprocating movement of the second end of the lever (320) drives the piston rod (200) to switch between the first position and the second position.

2. The lubricating device according to claim 1, characterized in that The lubrication device further includes a state adjustment component, which is connected to the piston rod (200) and is used to drive the piston rod (200) to switch between a first state and a second state. The first state refers to the state of the piston rod (200) when the lubrication device is in a working state, and the second state refers to the state of the piston rod (200) when the lubrication device is in a non-working state. In the first state, the piston rod (200) is located in the first position or the second position, and in the second state, the piston rod (200) is located in the third position. In the third position, the oil inlet is located outside the inner cavity (110), and the distance between the oil inlet and the cavity wall of the inner cavity (110) is a; in the second position, the distance between the oil inlet and the cavity wall of the inner cavity (110) is b, and a is greater than b.

3. The lubricating device according to claim 2, characterized in that The state adjustment assembly includes a first elastic element (410), a fixed pulley (420), a collar (430), and a first pull rope (440). One end of the first elastic element (410) is connected to the cavity wall of the inner cavity (110), and the other end is connected to the piston rod (200). The fixed pulley (420) is used to be rotatably installed in a designated installation position. The collar (430) is used to be movably sleeved on the outer wall of the rope (1000). The first end of the first pull rope (440) is connected to the collar (430), and the second end passes around the fixed pulley (420) and is connected to the piston rod (200). The part of the first pull rope (440) located between the fixed pulley (420) and the piston rod (200) is consistent with the moving direction of the piston rod (200). When the rope (1000) is in an inactive state, the rope (1000) hangs down, and the hanging rope (1000) can pull the piston rod (200) to the third position through the collar (430) and the first pull rope (440), and the first elastic element (410) generates elastic deformation; When the rope (1000) is in the working state, the rope (1000) is tensioned, and the first elastic element (410) restores its deformation to drive the piston rod (200) to move to the first position or the second position.

4. The lubrication device according to claim 2, characterized in that, The state adjustment component includes a first elastic element (410), a magnetic element (460), and an electromagnetic element (470). One end of the first elastic element (410) is connected to the cavity wall of the inner cavity (110), and the other end is connected to the piston rod (200). Among the magnetic element (460) and the electromagnetic element (470), one is provided on the piston rod (200) and located outside the oil reservoir (100), and the other is used to be fixedly installed at a designated installation position. When the electromagnetic component (470) is energized, the electromagnetic component (470) and the magnetic component (460) attract each other, driving the piston rod (200) to move to the third position, and the first elastic component (410) undergoes elastic deformation. When the electromagnetic component (470) is de-energized, the magnetic component (460) separates from the electromagnetic component (470), the first elastic component (410) recovers its deformation, and drives the piston rod (200) to move to the first position or the second position.

5. The lubrication device according to claim 2, characterized in that, The lubrication device further includes a ratchet and pawl mechanism (500) and a cam (600). The pawl (510) of the ratchet and pawl mechanism (500) is hinged to the second end of the lever (320). The cam (600) is connected to the ratchet (520) of the ratchet and pawl mechanism (500) so that the ratchet (520) drives the cam (600) to rotate. The cam (600) can abut against the piston rod (200). When the cam (600) abuts against the piston rod (200), the piston rod (200) is in the first position when the cam (600) is at the far repose angle, and the piston rod (200) is in the second position when the cam (600) is outside the far repose angle.

6. The lubrication device according to claim 5, characterized in that, The state adjustment assembly includes a first elastic element (410), a connecting rod (480), a magnetic element (460), an electromagnetic element (470), and a third elastic element (490). One end of the first elastic element (410) is connected to the cavity wall of the inner cavity (110), and the other end is connected to the piston rod (200). The first end of the connecting rod (480) is rotatably connected to the second end of the piston rod (200). Among the magnetic element (460) and the electromagnetic element (470), one is provided on the connecting rod (480), and the other is used to be installed in a designated installation position. One end of the third elastic element (490) is connected to the piston rod (200), and the other end is connected to the connecting rod (480). When the electromagnetic component (470) is energized, the electromagnetic component (470) and the magnetic component (460) attract each other, the connecting rod (480) separates from the cam (600), the first elastic component (410) recovers its deformation and drives the piston rod (200) to the third position, and the third elastic component (490) generates elastic deformation; When the electromagnetic component (470) is de-energized, the magnetic component (460) separates from the electromagnetic component (470), and the third elastic component (490) recovers its deformation to drive the connecting rod (480) to abut against the cam (600) and drive the connecting rod (480) to be located on the extension line of the piston rod (200). The connecting rod (480) drives the piston rod (200) to move to the first position or the second position, and the first elastic component (410) generates elastic deformation.

7. The lubrication device according to claim 1, characterized in that, The lubrication device also includes a plurality of limiting mechanisms (800), which are spaced apart along the moving direction of the rope (1000) in the working state. Each limiting mechanism (800) includes two detachably connected limiting blocks (810). The surface of each limiting block (810) is provided with a through groove. The through grooves of the two limiting blocks (810) are opposite to each other to form a through hole for the rope (1000) to pass through.

8. A crane, characterized in that, The device includes a rope (1000) and a lubrication device, the rope (1000) having an uneven surface, the lubrication device being used to lubricate the rope (1000), the lubrication device including the lubrication device according to any one of claims 1 to 7.

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