Crankshaft connecting rod lubricating device for high-speed warp knitting machine

Abstract

The utility model relates to the technical field of warp knitting machines, in particular to a crankshaft connecting rod lubricating device for a high-speed warp knitting machine. Comprising an oil tank, a lubricating oil pump and a plurality of connecting rod frame crankshaft connecting rod assemblies fixed to the oil tank. The lubricating oil pump communicates with the oil tank through an oil inlet pipe assembly and is connected to the oil way lubricating device through an oil outlet pipe assembly. The oil way lubricating device comprises two first-stage pipelines and a plurality of second-stage pipelines, inlets of the two first-stage pipelines are communicated with the flow divider, the second-stage pipelines are distributed and connected to the two first-stage pipelines, every two different second-stage pipelines with the corresponding positions between the two first-stage pipelines form a group, and the first-stage pipelines and the second-stage pipelines are communicated with the flow divider. The lubricating grease can be provided for the crankshaft connecting rod assembly in the high-speed warp knitting machine during high-speed transmission through the structure that the crankshaft connecting rod assembly is arranged on the connecting rod frame and corresponds to and communicates with the corresponding connecting rod frame crankshaft connecting rod assembly, and the effect that when the high-speed warp knitting machine operates at a high speed, joints such as the crankshaft connecting rod assembly in the high-speed warp knitting machine are locked due to oil loss is achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of warp knitting machines, and in particular to a crankshaft connecting rod lubrication device for a high-speed warp knitting machine. Background Technology

[0002] The market for high-speed warp knitting machines, such as Trico and Raschel, is developing rapidly. Domestic warp knitting machine technology is keeping pace with international developments, continuously improving machine performance in all aspects. The market not only demands higher quality fabrics from warp knitting machines but also seeks to increase machine output efficiency. This has led to increasingly higher machine speeds and longer widths for warp knitting machines; currently, high-speed warp knitting machines have widths ranging from 138 to 366 inches, or even longer. The internal crankshaft and connecting rod transmission mechanisms are facing increasingly higher requirements, and their lubrication mechanisms are becoming more challenging. This often results in internal bearings and other transmission nodes locking up due to lack of lubrication, affecting machine quality and production efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a crankshaft connecting rod lubrication device for high-speed warp knitting machines, addressing the deficiencies in existing technologies. This device provides stable lubricating grease to the crankshaft connecting rod assembly in the high-speed warp knitting machine during high-speed transmission, and solves the problem of locking up of joints such as the crankshaft connecting rod assembly due to lack of lubrication during high-speed operation.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: It includes an oil tank, a lubricating oil pump, and several connecting rod frame crankshaft connecting rod assemblies fixed on the oil tank; the lubricating oil pump is connected to the oil tank via an inlet pipe assembly, and the lubricating oil pump is connected to an oil circuit lubrication device via an outlet pipe assembly; the oil circuit lubrication device includes two primary pipelines and several secondary pipelines, the inlets of the two primary pipelines are respectively connected to a distributor, and the several secondary pipelines are distributed and connected to the two primary pipelines. Each pair of different secondary pipelines corresponding to the positions of the two primary pipelines forms a group, and corresponds to and is connected to a corresponding connecting rod frame crankshaft connecting rod assembly; the lubricating oil pump draws lubricating oil from the oil tank to the oil circuit lubrication device, and then sequentially acts on the connecting rod frame crankshaft connecting rod assembly through the primary pipelines and the secondary pipelines.

[0005] Furthermore, the lubricating oil pump is connected to the oil tank at the middle position through the oil inlet pipe assembly, and the lubricating oil pump is connected to the oil circuit lubrication device at the middle position of the oil tank through the oil outlet pipe assembly.

[0006] Furthermore, the distributor is located in the middle of the oil tank, and the oil circuit lubrication device is symmetrically arranged on both sides with the distributor as the center.

[0007] Furthermore, each pair of different secondary pipelines between the two primary pipelines forms a group, symmetrically connected to and corresponding to one of the connecting rod frame crankshaft connecting rod assemblies on both sides with the distributor as the center.

[0008] Furthermore, one of the secondary pipelines distributed on the primary pipeline is connected to a nozzle on the connecting rod crankshaft connecting rod assembly to form a spray device.

[0009] Furthermore, several of the secondary pipelines are distributed and connected to the two primary pipelines via three-way valves.

[0010] Furthermore, pressure relief valves are installed at both ends of one of the primary pipelines.

[0011] Furthermore, a filter screen is provided at the connection between the oil inlet pipe assembly and the oil tank.

[0012] Furthermore, the two primary pipelines undergo corresponding dimensional changes depending on their installation locations.

[0013] Furthermore, the secondary pipeline undergoes corresponding dimensional changes depending on its installation location.

[0014] The system comprises an oil tank, a lubricating oil pump, and several connecting rod frames and crankshaft connecting rod assemblies fixed to the oil tank. The lubricating oil pump is connected to the oil tank via an inlet pipe assembly and to an oil circuit lubrication device via an outlet pipe assembly. The oil circuit lubrication device includes two primary pipes and several secondary pipes. The inlets of the two primary pipes are respectively connected to a distributor. The several secondary pipes are distributed and connected to the two primary pipes. Each pair of different secondary pipes between the two primary pipes forms a group and corresponds to and is connected to a corresponding connecting rod frame and crankshaft connecting rod assembly. The lubricating oil pump draws lubricating oil from the oil tank to the oil circuit lubrication device and then acts on the connecting rod frame and crankshaft connecting rod assembly through the primary and secondary pipes in sequence. This structure provides stable lubricating grease to the crankshaft connecting rod assembly in a high-speed warp knitting machine during high-speed transmission and solves the problem of locking of the crankshaft connecting rod assembly and other joints due to lack of lubrication during high-speed operation of the high-speed warp knitting machine. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the crankshaft connecting rod lubrication device for a high-speed warp knitting machine according to this utility model;

[0017] Figure 2 This is a schematic diagram from another perspective of the crankshaft connecting rod lubrication device for a high-speed warp knitting machine according to this utility model;

[0018] Figure 3 This is a schematic diagram of the pipeline system of the crankshaft connecting rod lubrication device for a high-speed warp knitting machine according to this utility model;

[0019] Figure 4 This is a schematic diagram of the connecting rod frame crankshaft connecting rod assembly of this utility model;

[0020] Figure 5 This is a schematic diagram of the crankshaft connecting rod assembly of this utility model from another perspective.

[0021] Figure label:

[0022] 1. Oil tank; 2. Lubricating oil pump; 3. Connecting rod frame, crankshaft, and connecting rod assembly; 4. Nozzle; 5. Oil inlet pipe assembly; 6. Oil circuit lubrication device; 7. Primary pipeline; 8. Secondary pipeline; 9. Diverter. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] In the description of this utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inner", and "outer" are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] A crankshaft connecting rod lubrication device for a high-speed warp knitting machine, such as Figures 1-5As shown, the system includes an oil tank 1, a lubricating oil pump 2, and several connecting rod frame crankshaft connecting rod assemblies 3 fixed on the oil tank 1. The lubricating oil pump 2 is connected to the oil tank 1 via an oil inlet pipe assembly 4, and the lubricating oil pump 2 is connected to an oil circuit lubrication device 6 via an oil outlet pipe assembly 5. The oil circuit lubrication device 6 includes two primary pipes 6-1 and several secondary pipes 6-2. The inlets of the two primary pipes 6-1 are respectively connected to a distributor 7. The several secondary pipes 6-2 are distributed and connected to the two primary pipes 6-1. Each pair of different secondary pipes 6-2 between the two primary pipes 6-1 forms a group, which corresponds to and is connected to a corresponding connecting rod frame crankshaft connecting rod assembly 3. The lubricating oil pump 2 draws lubricating oil from the oil tank 1 to the oil circuit lubrication device 6, and then acts on the connecting rod frame crankshaft connecting rod assembly 3 through the primary pipes 6-1 and the secondary pipes 6-2 in sequence.

[0026] Specifically, the lubricating oil is distributed to two primary pipelines 6-1 through the distributor 7, and then multiple sets of secondary pipelines 6-2 are extended from the primary pipelines 6-1 to form a "main trunk-branch" network. This structure can adapt to the needs of ultra-long spans and ensure that the lubricating oil is evenly delivered to each connecting rod crankshaft connecting rod assembly 3, avoiding the problem of insufficient end lubrication caused by pressure decay in traditional single pipelines. The secondary pipelines 6-2 between the two primary pipelines 6-1 are divided into groups, with each group corresponding to one connecting rod crankshaft connecting rod assembly 3. This design, through a spatially adaptable layout, precisely matches the motion phase and load differences of the crankshaft connecting rod, achieving differentiated oil distribution. This prevents local nodes from locking up due to lubrication lag at high speeds. Two independent primary pipelines 6-1 are used for parallel oil delivery. If one pipeline becomes blocked or leaks, the other can still maintain at least 50% lubrication capacity, significantly reducing the risk of machine downtime due to oil circuit failures and ensuring continuous production. The lubricating oil pump 2 stably draws oil from the oil tank 1 through the inlet pipe assembly 4 and delivers it to the oil circuit lubrication device 6 through the outlet pipe assembly 5. Combined with the pump's pressure adaptive adjustment function, a constant lubricating oil flow can be maintained at different speeds of the warp knitting machine, solving the problem of lubrication interruption caused by oil pressure fluctuations at high speeds. The connecting rod frame crankshaft connecting rod assembly 3 is directly fixed above the oil tank 1. During disassembly, old oil can be recovered through the oil collection trough in the oil tank 1. Simultaneously, the secondary pipeline 6-2 uses a quick-connect coupling design for easy replacement of blocked pipelines. This structure reduces maintenance downtime and lowers the risk of lubricating oil leakage and contamination. The overall solution eliminates the defects of insufficient oil supply at the end of the traditional single pipeline, adapts constant pressure oil supply to the high-frequency motion of the crankshaft and connecting rod, uses redundant design to resist local oil circuit failures, and uses modular structure to simplify cleaning and component replacement processes.

[0027] As a preferred embodiment of the above, such as Figures 1-5As shown, the lubricating oil pump 2 is connected to the oil tank 1 in the middle position through the oil inlet pipe assembly 4, and the lubricating oil pump 2 is connected to the oil circuit lubrication device 6 in the middle position of the oil tank 1 through the oil outlet pipe assembly 5.

[0028] Specifically, oil is drawn from the middle of the oil tank 1 through the oil inlet pipe assembly 4, avoiding the sediment and impurities at the bottom and the foam accumulation area at the top. This ensures that the oil sucked into the lubricating oil pump 2 is pure and has optimal fluidity, reducing the risk of filter clogging and extending the service life of the lubricating oil pump 2. During the operation of the high-speed warp knitting machine, the oil level in the oil tank 1 may fluctuate due to oil consumption or tilting. The central connection design ensures that the oil inlet pipe assembly 4 is always within the effective oil depth range, avoiding the problem of cavitation and oil interruption caused by excessively low oil levels in traditional bottom-suction systems, thus ensuring continuous lubrication. The oil outlet pipe assembly 5 connects from the middle of the oil tank 1 to the oil circuit lubrication device 6, shortening the total length of the pipeline from the outlet of the lubricating oil pump 2 to the lubrication point. Combined with the symmetrical distribution in the middle... The design reduces pipe bends and fluid resistance, allowing the lubricating oil pump 2 to output higher oil pressure at the same power, adapting to the lubrication needs of long-distance applications. At the same time, the oil temperature in the middle of the oil tank 1 is less affected by the external environment and machine heat dissipation (compared to the top or bottom). The lubricating oil pump 2 draws oil with a stable temperature from the middle and delivers it to the oil circuit lubrication device 6 through the oil outlet pipe assembly 5. This reduces viscosity changes caused by localized excessive oil temperature, maintaining consistent lubrication performance. Furthermore, the inlet and outlet pipe assemblies are centrally located in the middle of the oil tank 1, allowing for simultaneous monitoring of the oil pump 2's status, filter replacement, and pipe sealing checks from a single maintenance location. Compared to a distributed interface design, this improves maintenance efficiency.

[0029] As a preferred embodiment of the above, such as Figures 1-5 As shown, the distributor 7 is located in the middle of the oil tank 1, and the oil circuit lubrication device 6 is symmetrically arranged on both sides with the distributor 7 as the center.

[0030] As a preferred embodiment of the above, such as Figures 1-5 As shown, each pair of different secondary pipelines 6-2 between the two primary pipelines 6-1 forms a group, which are symmetrically connected to and correspond to one of the connecting rod frame crankshaft connecting rod assemblies 3 on both sides with the distributor 7 as the center.

[0031] Specifically, the distributor 7 is located in the middle of the oil tank 1, and the oil circuit lubrication device 6 extends symmetrically to both sides with the distributor 7 as the center, so that the inlet pressure of the two primary pipelines 6-1 is consistent. Combined with the secondary pipelines 6-2 symmetrically grouped and connected to the connecting rod assembly 3 of the crankshaft, this eliminates the pressure difference of oil supply on both sides caused by the traditional offset distributor, and ensures the uniformity of lubrication in the left and right areas of the long-width warp knitting machine. The secondary pipelines 6-2 group symmetrically arranged with the distributor 7 as the center can match the symmetrical movement phase of the crankshaft connecting rod assembly 3. When the connecting rod assembly 3 of the crankshaft on one side is under high load, the symmetrically distributed secondary pipelines 6-2 dynamically increase the oil supply in that area through the oil circuit pressure self-regulation function, avoiding instantaneous oil shortage caused by sudden load changes. The symmetrical layout of the primary pipelines 6-1 and the secondary pipelines 6-2 makes the path length and bending angle of the lubricating oil from the distributor 7 to each lubrication point equal, which greatly reduces the pressure fluctuation caused by the difference in flow resistance. This design balances the load on the lubricating oil pump 2, reducing operating vibration and energy consumption, and adapting to the high-speed requirements of warp knitting machines. The symmetrical oil circuit structure centered on the distributor 7 allows for flexible matching of warp knitting machines with different widths by increasing or decreasing the number of secondary pipelines 6-2, without the need to redesign the main oil circuit, significantly shortening the equipment modification cycle. When blockage or leakage occurs in the symmetrically grouped secondary pipelines 6-2, the faulty group can be quickly located by comparing the oil pressure data on the left and right sides, and maintenance on one side does not affect the normal operation of the other side, minimizing downtime.

[0032] As a preferred embodiment of the above, such as Figures 1-5 As shown, one of the secondary pipelines 6-2 distributed on the primary pipeline 6-1 is connected to the nozzle 3-1 on the connecting rod frame crankshaft connecting rod assembly 3 to form a spray device.

[0033] Specifically, the lubricating oil is atomized through the nozzle 3-1 and delivered to the friction surface of the crankshaft connecting rod assembly 3 through the secondary pipeline 6-2. Compared with the traditional dripping or brushing method, the lubricant coverage area is increased, which is especially suitable for the instantaneous lubrication needs under the high-speed reciprocating motion of the crankshaft connecting rod.

[0034] As a preferred embodiment of the above, such as Figures 1-5 As shown, several secondary pipelines 6-2 are distributed and connected to two primary pipelines 6-1 via three-way valves.

[0035] Specifically, the secondary pipeline 6-2 is connected to two primary pipelines 6-1 simultaneously via a three-way valve. When one primary pipeline 6-1 is blocked or experiences abnormal pressure, the three-way valve can automatically switch to supply oil to the other pipeline, ensuring uninterrupted lubrication of the corresponding connecting rod crankshaft connecting rod assembly 3 and improving the system's fault tolerance. The three-way valve has a built-in flow regulation module that can dynamically allocate the oil volume ratio between the two primary pipelines 6-1 and the secondary pipeline 6-2 based on the real-time load data of the crankshaft connecting rod assembly 3, thereby improving the overall lubrication efficiency.

[0036] As a preferred embodiment of the above, such as Figures 1-5 As shown, one of the primary pipelines 6-1 is equipped with pressure relief valves at both ends.

[0037] Specifically, the pressure relief valves at both ends of the primary pipeline 6-1 can dynamically adjust their opening thresholds based on the output pressure of the lubricating oil pump 2. When the pressure in the pipeline exceeds the set value, the valves automatically open to release pressure, guiding excess lubricating oil back to the oil tank 1. This prevents pipeline rupture or nozzle 3-1 atomization failure, protecting the transmission nodes of the connecting rod frame crankshaft connecting rod assembly 3. The pressure relief valves at both ends of the primary pipeline 6-1, through their symmetrical layout, can balance the axial pressure gradient of the long-width oil circuit lubrication device 6. When the pressure drops at the distal end due to increased flow resistance, the valve at the proximal end appropriately releases pressure, forcing the lubricating oil pump 2 to increase its output pressure to compensate for the demand at the distal end, ensuring consistent lubrication pressure throughout the entire area.

[0038] As a preferred embodiment of the above, such as Figures 1-5 As shown, a filter screen is provided at the connection between the oil inlet pipe assembly 4 and the oil tank 1.

[0039] Specifically, by setting a filter screen at the inlet of the oil tank 1 of the oil inlet pipe assembly 4, it effectively intercepts impurities such as suspended particles and metal shavings in the oil, preventing them from entering the lubricating oil pump 2 and the subsequent oil circuit lubrication device 6, avoiding blockage of the nozzle 3-1 or jamming of the three-way valve, thus protecting the transmission node from the source.

[0040] As a preferred embodiment of the above, such as Figures 1-5 As shown, the two primary pipelines 6-1 have corresponding size variations depending on their installation positions.

[0041] As a preferred embodiment of the above, such as Figures 1-5 As shown, the secondary pipeline 6-2 varies in size depending on its location.

[0042] Specifically, depending on the location of the pipeline, the diameters of the primary pipeline 6-1 and the secondary pipeline 6-2 can be different. The diameter of the primary pipeline 6-1 increases step by step, while the diameter of the secondary pipeline 6-2 decreases step by step. This is achieved by offsetting the flow resistance gradient, eliminating the oil pressure attenuation at the far end caused by the excessively long span, and ensuring the consistency of lubrication pressure for all connecting rod crankshaft connecting rod assemblies 3.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A crankshaft connecting rod lubrication device for a high-speed warp knitting machine, characterized in that: It includes an oil tank (1), a lubricating oil pump (2), and several connecting rod frames, crankshaft, and connecting rod assemblies (3) fixed on the oil tank (1); The lubricating oil pump (2) is connected to the oil tank (1) through an oil inlet pipe assembly (4), and the lubricating oil pump (2) is connected to the oil circuit lubrication device (6) through an oil outlet pipe assembly (5); The oil lubrication device (6) includes two primary pipelines (6-1) and several secondary pipelines (6-2). The inlets of the two primary pipelines (6-1) are respectively connected to the distributor (7). The several secondary pipelines (6-2) are distributed and connected to the two primary pipelines (6-1). Each pair of different secondary pipelines (6-2) between the two primary pipelines (6-1) forms a group and corresponds to and is connected to a corresponding connecting rod frame crankshaft connecting rod assembly (3). The lubricating oil pump (2) draws the lubricating oil in the oil tank (1) to the oil circuit lubrication device (6), and then acts on the connecting rod frame crankshaft connecting rod assembly (3) through the first-level pipeline (6-1) and the second-level pipeline (6-2) in sequence.

2. A crankshaft connecting rod lubricating device for a high-speed warp knitting machine according to claim 1, wherein in, The lubricating oil pump (2) is connected to the oil tank (1) in the middle position through the oil inlet pipe assembly (4), and the lubricating oil pump (2) is connected to the oil circuit lubrication device (6) in the middle position of the oil tank (1) through the oil outlet pipe assembly (5).

3. A crankshaft connecting rod lubricating device for a high-speed warp knitting machine according to claim 2, characterized in that The distributor (7) is located in the middle of the oil tank (1), and the oil circuit lubrication device (6) is symmetrically arranged on both sides with the distributor (7) as the center.

4. A crankshaft connecting rod lubricating device for a high-speed warp knitting machine according to claim 3, wherein Each pair of two different secondary pipelines (6-2) between the two primary pipelines (6-1) forms a group, which are symmetrically connected to and correspond to one of the connecting rod frame crankshaft connecting rod assemblies (3) on both sides with the distributor (7) as the center.

5. A crankshaft connecting rod lubricating device for a high-speed warp knitting machine according to claim 1, wherein The secondary pipeline (6-2) distributed on one of the primary pipelines (6-1) is connected to the nozzle (3-1) on the connecting rod frame crankshaft connecting rod assembly (3) to form a spray device.

6. A crankshaft connecting rod lubrication device for a high-speed warp knitting machine according to claim 1, characterized in that, Several of the secondary pipelines (6-2) are distributed and connected to the two primary pipelines (6-1) via three-way valves.

7. A crankshaft connecting rod lubricating device for a high speed warp knitting machine according to claim 1, wherein One of the primary pipelines (6-1) is equipped with pressure relief valves at both ends.

8. A crankshaft connecting rod lubricating device for a high speed warp knitting machine according to claim 1, wherein A filter screen is provided at the connection between the oil inlet pipe assembly (4) and the oil tank (1).

9. A crankshaft connecting rod lubrication device for a high-speed warp knitting machine according to claim 1, characterized in that, The two primary pipelines (6-1) are sized differently depending on their location.

10. A crankshaft connecting rod lubricating device for a high speed warp knitting machine according to claim 9, wherein The secondary pipeline (6-2) varies in size depending on its location.

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