A precise lubricating device for step chain
Patent Information
- Application Number
- CN202610909941.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-06-23
- Publication Date
- 2026-10-16
AI Technical Summary
由于梯级链9不停的运动，上述滴油润滑的方式无法保证润滑油能精准附着在梯级链9的销轴92上，整体润滑时间长，易造成润滑油浪费且需要人工辅助加油
1、本发明通过顶起件的配合使用，当顶起件处于第一位置时，喷油嘴与梯级链上的铰接位置相对应。在梯级链行进过程中，顶起件与滚轮相接触并沿着滚轮的轮面移动，以能够顶动活塞杆并压缩储油腔，以迫使储油腔内的润滑油经由喷油嘴喷出至铰接位置，从而对销轴进行润滑。当顶起件处于第二位置时，带动活塞杆移动并解除对储油腔的压缩，从而阻止喷油口喷油。上述方式的结合，仅在梯级链上的铰接位置到位时完成喷油，自动实现对梯级链上的各个铰接位置精准润滑，且润滑充分，降低润滑油的消耗量，省时省力，有效满足梯级链的润滑需求，实用性强。
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Figure CN122920055A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of elevator technology, and in particular to a precision lubrication device for elevator chain steps. Background Technology
[0002] like Figure 1-3 The diagram shows a ladder chain and a ladder chain lubrication device in the prior art. The ladder chain 9 includes several sets of sequentially hinged links 91. The beginning and end ends of two adjacent sets of links 91 are hinged by a pin 92, thus forming a hinge position at the pin 92. A roller 93 is sleeved on the pin 92 via a bearing. During use of the ladder chain 9, the pin 92 (i.e., the hinge position) needs to be lubricated. The aforementioned ladder chain lubrication device is fixed to the angled member 83 of the comb plate by fasteners. The ladder chain lubrication device includes a connecting seat 8 and a brush 81 mounted on the connecting seat 8. The left and right distance of the connecting seat 8 is adjusted by a transverse elongated hole 84 on the angled member 83, thereby adjusting the left and right distance of the brush 81. The vertical clearance between the brush 81 and the ladder chain 9 is adjusted by a vertical elongated hole 82 on the connecting seat 8, ensuring a certain distance between the brush 81 and the ladder chain 9. By supplying lubricating oil to the brush 81, the lubricating oil drips down the brush 81 onto the ladder chain 9. When a pin 92 passes by, the lubricating oil drips onto the pin 92 to lubricate it. However, because the ladder chain 9 is constantly moving, the above-mentioned drip lubrication method cannot guarantee that the lubricating oil will adhere precisely to the pin 92 of the ladder chain 9. The overall lubrication time is long, which easily leads to the waste of lubricating oil and requires manual assistance in lubrication. Summary of the Invention
[0003] To address the aforementioned technical problems, the purpose of this invention is to propose a precision lubrication device for ladder chains, which can automatically and precisely lubricate each hinge position on the ladder chain, ensuring sufficient lubrication, reducing lubricant consumption, saving time and effort, effectively meeting the lubrication needs of ladder chains, and possessing strong practicality.
[0004] The technical solution of the present invention is implemented as follows: a ladder chain precision lubrication device, wherein the ladder chain includes several sets of chain links that are sequentially hinged to form hinge positions, and rollers connected to the hinge positions and rotating around their own central axis; the precision lubrication device includes a cylinder, a piston rod, an oil injector, an oil supply device, and a lifting component; The cylinder has a working position located on one side of the ladder chain; The piston portion of the piston rod moves in a sealed manner in the direction of approaching or moving away from the ladder chain; an oil storage chamber is formed on one side of the piston portion of the piston rod inside the cylinder; an oil inlet and an oil outlet communicating with the oil storage chamber are provided on the side wall of the cylinder. The oil supply device is connected to the oil inlet and is used to deliver lubricating oil into the oil storage chamber. The fuel injector is arranged facing the ladder chain and is connected to the fuel outlet; A lifting member is provided on the end of the piston rod away from the piston portion; The lifting member has a contact end facing the ladder chain, and has a first position and a second position relative to the ladder chain in the direction of travel of the ladder chain. In the working position and the first position, the contact end of the jacking member contacts the roller and is able to move relative to the roller along the roller surface as the ladder chain travels, and the grease nipple corresponds to the hinge position; in the working position and the second position, the jacking member is located between two adjacent rollers of the ladder chain; The spring is located between the piston rod and the cylinder and has a spring force that drives the piston rod to move toward the ladder chain.
[0005] Furthermore, the lifting member is a wheel structure with a guide wheel surface forming the contact end.
[0006] Furthermore, the wheel structure is rotatably arranged around its own central axis, and the central axis of the wheel structure is arranged in the same direction as the central axis of the roller.
[0007] Furthermore, the oil supply device includes an oil pump and a check valve; the oil pump, check valve, and oil inlet are connected in sequence via pipelines.
[0008] Furthermore, the fuel injector and the fuel outlet are connected by a hose.
[0009] Furthermore, the cylinder has a non-operating position away from the operating position; the precision lubrication device also includes a drive mechanism for driving the cylinder back and forth between the operating and non-operating positions; in the non-operating position, the contact end of the jack is prevented from contacting the roller when the ladder chain travels.
[0010] Furthermore, the driving device includes an electromagnet; when the electromagnet is energized, it attracts the cylinder to move to a non-working position; when the electromagnet is de-energized, it releases the cylinder to the working position.
[0011] Furthermore, the piston portion of the piston rod is sealed to the inner wall of the cylinder by an O-ring.
[0012] Furthermore, the beginning and end ends of two adjacent sets of chain links are hinged to each other by a pin; each chain link includes two chain pieces arranged at relatively intervals; the roller is disposed between the two chain pieces and is sleeved on the pin by a bearing.
[0013] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: 1. This invention utilizes a lifting component. When the lifting component is in the first position, the oil injector corresponds to the hinge position on the ladder chain. During the ladder chain's movement, the lifting component contacts the roller and moves along the roller's surface, thereby actuating the piston rod and compressing the oil reservoir. This forces the lubricating oil in the reservoir to be sprayed out through the oil injector to the hinge position, thus lubricating the pin. When the lifting component is in the second position, it moves the piston rod and releases the compression of the oil reservoir, thereby preventing oil from spraying from the injector. This combination ensures that oil spraying is completed only when the hinge position on the ladder chain is in place, automatically and precisely lubricating each hinge position on the ladder chain. The lubrication is thorough, reducing oil consumption, saving time and effort, effectively meeting the lubrication needs of the ladder chain, and demonstrating strong practicality.
[0014] 2. This invention utilizes a drive device to move the cylinder back and forth between the working and non-working positions. When in the non-working position, the cylinder, piston rod, and lifting member are all moved away from the ladder chain, and a certain gap is maintained between the lifting member and the rollers on the ladder chain, thereby preventing the contact end of the lifting member from contacting the rollers and ensuring the normal operation of the ladder chain is not affected. Attached Figure Description
[0015] The technical solution of the present invention will be further described below with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of a ladder chain and a ladder chain lubrication device in the prior art; Figure 2 This is a schematic diagram of a ladder chain lubrication device in the prior art. Figure 3 This is a schematic diagram of a ladder chain structure in the prior art; Figure 4 This is a schematic diagram of the lifting member of the present invention in the first position; Figure 5 This is a schematic diagram of the lifting member of the present invention in the second position; The components are as follows: 1. Cylinder block; 11. Oil reservoir; 12. Oil inlet; 13. Oil outlet; 2. O-ring; 3. Piston rod; 31. Piston part; 32. Limiting plate; 33. Spring; 4. Lifting component; 5. Injector; 51. Hose; 6. Oil pump; 61. Check valve; 7. Drive unit; 8. Connecting seat; 81. Brush; 82. Vertical elongated hole; 83. Angle component; 84. Horizontal elongated hole; 9. Ladder chain; 91. Chain link; 911. Chain piece; 92. Pin; 93. Roller. Detailed Implementation
[0016] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention.
[0017] like Figure 4-5 The diagram illustrates a precision lubrication device for a ladder chain according to this embodiment. This device enables lubrication of a ladder chain 9 in the prior art. The ladder chain 9, as described in the background section, comprises several sets of chain links 91 sequentially hinged to form hinged positions, and rollers 93 connected to the hinged positions and rotating about their own central axis. Specifically, each chain link 91 includes two chain plates 911 arranged at relatively intervals. In two adjacent sets of chain links 91, pin holes are machined at the beginning and end of the chain plates 911 of one set and the end of the chain plates 911 of the other set. By inserting pins 92 into these pin holes, the beginning and end ends of adjacent sets of chain links 91 are hinged together, forming a hinged position at the pins 92. Snap rings are installed at both ends of the pins 92 to restrict movement of the pins 92 along the central axis. Roller 93 is positioned between two chain links 911 and is connected to pin 92 via a bearing, allowing it to rotate around its central axis. During the movement of the ladder chain 9, roller 93 and pin 92 follow the movement.
[0018] The precision lubrication device of this embodiment includes a cylinder body 1, a piston rod 3, an oil injector 5, an oil supply device, and a lifting member 4. The cylinder body 1 is arranged on one side of the ladder chain 9 in the thickness direction (i.e., the width direction of the chain links 911) to have a working position. A piston chamber is machined inside the cylinder body 1. The piston rod 3 is a conventional component in the prior art, which includes a rod body and a piston portion 31 assembled on one end of the rod body. The piston portion 31 of the piston rod 3 is arranged in a sealed manner in the piston chamber in a direction close to or away from the ladder chain 9 (up and down in this embodiment). An O-ring 2 is fitted on the outer wall of the piston portion 31 of the piston rod 3, and a sealing fit is formed between the outer wall of the piston portion 31 of the piston rod 3 and the inner wall of the cylinder body through the O-ring 2. A closed oil reservoir 11 is formed in the piston chamber of the cylinder body 1 on the side of the piston portion 31 of the piston rod 3 facing away from the ladder chain 9. With the above structural design, when the piston rod 3 moves in the piston chamber, the oil reservoir 11 can be expanded or compressed.
[0019] The cylinder body 1 has an oil inlet 12 and an oil outlet 13 machined on its side wall, which communicate with the oil reservoir 11. An oil supply device is connected to the oil inlet 12 and is used to supply lubricating oil to the oil reservoir 11. This oil supply device includes an oil pump 6 and a one-way valve 61. The oil pump 6, the one-way valve 61, and the oil inlet 12 are connected in sequence via pipes. The one-way valve 61 prevents the lubricating oil in the oil reservoir 11 from being discharged from the oil inlet 12.
[0020] The aforementioned fuel injector 5 is arranged facing the ladder chain 9. The fuel injector 5 and the oil outlet 13 are connected by a hose 51. The lubricating oil in the oil reservoir 11 can be delivered to the fuel injector 5 through the oil outlet 13 and the hose 51, and then sprayed onto the ladder chain 9 through the fuel injector 5.
[0021] A lifting member 4 is mounted on the end of the piston rod 3 furthest from the piston portion 31. The piston rod 3 and the lifting member 4 can move as a whole in a direction approaching or away from the ladder chain 9. The lifting member 4 has a contact end facing the ladder chain 9. When the ladder chain 9 moves, the lifting member 4 has a first position and a second position relative to the ladder chain 9 in the direction of travel of the ladder chain 9. When the cylinder 1 is in the working position and the lifting member 4 is in the first position, the contact end of the lifting member 4 contacts the roller 93 and can move relative to the roller 93 along the wheel surface of the roller 93 during the travel of the ladder chain 9, and the aforementioned oil nozzle corresponds to the hinge position. With the above structural design, when the lifting member 4 moves along the wheel surface of the roller 93, it can force the lifting member 4 to move away from the ladder chain 9, thereby causing the piston rod 3 to move and compress the oil storage chamber 11, so as to force the lubricating oil in the oil storage chamber 11 to be delivered to the oil injector 5 through the oil outlet 13, and spray the lubricating oil to the hinge position on the ladder chain 9.
[0022] When the cylinder 1 is in the working position and the lifting member 4 is in the second position, the lifting member 4 is located between two adjacent rollers 93 of the ladder chain 9. When the lifting member 4 disengages from the rollers 93, the piston rod 3 releases its compression on the oil reservoir 11, making it difficult for the lubricating oil in the oil reservoir 11 to be discharged from the oil outlet 13.
[0023] In this embodiment, a limiting plate 32 is installed on the piston rod 3, and the aforementioned spring 33 is sleeved on the piston rod 3 and abuts against the limiting plate 32 and the cylinder 1. The spring 33 has elastic force, which can drive the piston rod 3 to move towards the ladder chain 9. During the movement of the ladder chain 9, the elastic force of the spring 33 enables the lifting member 4 and the piston rod 3 to reciprocate in the direction of approaching or moving away from the ladder chain 9.
[0024] In this embodiment, the lifting member 4 is a wheel structure with a guide wheel surface forming a contact end. This guide wheel surface allows the lifting member 4 to smoothly contact and disengage from the roller 93 and move smoothly along the wheel surface of the roller 93. The central axis of this wheel structure is connected to the piston rod 3 via a bearing, enabling the wheel structure to rotate around its own central axis. The central axis of the wheel structure is arranged in the same direction as the central axis of the roller 93.
[0025] In this embodiment, the cylinder 1 has a non-operating position away from the working position. The precision lubrication device in this embodiment also includes a drive device 7. This drive device 7 is used to drive the cylinder 1 back and forth between the working position and the non-operating position. In the non-operating position, the cylinder 1, the lifting member 4, the piston rod 3, and the nozzle 5 are all away from the ladder chain 9. The drive device 7 includes an electromagnet. Ferromagnetic materials are arranged on the cylinder 1. When the electromagnet is energized, it can attract the cylinder 1 to move to the non-operating position. When the electromagnet is de-energized, it releases the cylinder 1 to the working position. A limit structure is provided for the cylinder 1 to guide the cylinder 1 to move between the working position and the non-operating position. Through the above structural design, when in the non-operating position, the cylinder 1, the piston rod 3, and the lifting member 4 are all away from the ladder chain 9, and a certain gap is maintained between the lifting member 4 and the roller 93 on the ladder chain 9, thereby preventing the contact end of the lifting member 4 from contacting the roller 93, and not affecting the normal operation of the ladder chain 9.
[0026] In practical use, the cylinder 1 moves to the working position, and the control oil pump 6 delivers lubricating oil to the oil reservoir 11 through the oil inlet 12. During the movement of the ladder chain 9, when the lifting member 4 is in the first position, the nozzle 5 corresponds to the hinge position on the ladder chain 9. The lifting member 4 contacts the roller 93 and moves along the surface of the roller 93 to push the piston rod 3 and compress the oil reservoir 11, forcing the lubricating oil in the oil reservoir 11 to be delivered to the nozzle 5 through the oil outlet 13, and then sprayed out through the nozzle 5 to the hinge position (i.e., the pin 92), thereby lubricating the pin 92. When the lifting member 4 is in the second position, under the elastic force of the spring 33, the piston rod 3 moves and releases the compression of the oil reservoir 11. The lubricating oil in the oil reservoir 11 is difficult to discharge from the oil outlet 13, thereby preventing the nozzle from spraying oil. In the above method, the lifting component 4 switches back and forth between the first and second positions to achieve oil spraying at each hinge position of the ladder chain 9. Oil spraying is completed only when the hinge position on the ladder chain 9 is in place, automatically achieving precise and sufficient lubrication at each hinge position on the ladder chain 9, reducing oil consumption, saving time and effort, and effectively meeting the lubrication needs of the ladder chain 9.
[0027] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.
Claims
1. A precision lubrication device for a ladder chain, wherein the ladder chain comprises a plurality of chain links sequentially hinged to form hinge positions, and rollers connected to the hinge positions and rotating about their own central axis; the precision lubrication device comprises a cylinder, a piston rod, an oil injector, an oil supply device, and a lifting component; characterized in that: The cylinder has a working position located on one side of the ladder chain; The piston portion of the piston rod is sealed and movable within the cylinder body in a direction close to or away from the ladder chain; an oil storage chamber is formed on one side of the piston portion of the piston rod within the cylinder body; an oil inlet and an oil outlet communicating with the oil storage chamber are provided on the side wall of the cylinder body. The oil supply device is connected to the oil inlet and is used to deliver lubricating oil into the oil storage chamber. The fuel injector is arranged facing the ladder chain and is connected to the fuel outlet; A lifting member is provided on the end of the piston rod away from the piston portion; The lifting member has a contact end facing the ladder chain, and has a first position and a second position relative to the ladder chain in the direction of travel of the ladder chain. In the working position and the first position, the contact end of the jacking member contacts the roller and is able to move relative to the roller along the roller surface as the ladder chain travels, and the grease nipple corresponds to the hinge position; in the working position and the second position, the jacking member is located between two adjacent rollers of the ladder chain; The spring is located between the piston rod and the cylinder and has a spring force that drives the piston rod to move toward the ladder chain.
2. The precision lubrication device for a ladder chain according to claim 1, characterized in that: The lifting member is a wheel structure with a guide wheel surface forming the contact end.
3. The precision lubrication device for a ladder chain according to claim 2, characterized in that; The wheel structure is arranged to rotate around its own central axis, and the central axis of the wheel structure is arranged in the same direction as the central axis of the roller.
4. The precision lubrication device for a ladder chain according to claim 1, characterized in that: The oil supply device includes an oil pump and a check valve; the oil pump, check valve, and oil inlet are connected in sequence by pipelines.
5. The precision lubrication device for a ladder chain according to claim 1, characterized in that: The fuel injector and the fuel outlet are connected by a hose.
6. The precision lubrication device for a ladder chain according to claim 1, characterized in that: The cylinder has a non-operating position away from the operating position; the precision lubrication device also includes a drive mechanism for moving the cylinder back and forth between the operating and non-operating positions; in the non-operating position, the contact end of the jack is prevented from contacting the roller when the ladder chain travels.
7. A precision lubrication device for a ladder chain according to claim 6, characterized in that: The driving device includes an electromagnet; when the electromagnet is energized, it attracts the cylinder to move to a non-working position; when the electromagnet is de-energized, it releases the cylinder to the working position.
8. The precision lubrication device for a ladder chain according to claim 1, characterized in that: The piston section of the piston rod and the inner wall of the cylinder are sealed together by an O-ring.
9. A precision lubrication device for a ladder chain according to claim 1, characterized in that: The beginning and end of two adjacent sets of chain links are hinged to each other by a pin; each chain link includes two chain pieces arranged at relatively intervals; the roller is disposed between the two chain pieces and is sleeved on the pin by a bearing.