Self-lubricating device for speed increasing gear shaft pair

Abstract

The present invention provides a self-lubricating device for a speed-increasing gear shaft pair, comprising a speed-increasing gear box, a speed-increasing gear assembly, an oil storage tank, a silencer oil baffle plate and a lubricating oil tank. The oil storage tank stores lubricating oil and transports the oil to the meshing point of the speed-increasing gear pair through the lubricating oil tank to achieve continuous and effective lubrication. The silencer oil baffle plate blocks the oil thrown off by the gear below and drains it back to the oil storage tank. The oil storage tank is a trapezoidal body, and the bottom plate is provided with a trapezoidal lubricating oil tank, which can accelerate the flow rate of the oil and improve the lubrication efficiency. The fixed column supports the oil storage tank to ensure stable installation. The cross-section of the silencer oil baffle plate is a 1 / 4 arc, which increases the oil baffle area, is provided with an oil inlet gap and a connecting rod to improve stability, and a chamfer is provided on the upper side to guide the flow of oil. The speed-increasing gear assembly comprises a main speed-increasing gear shaft, a secondary speed-increasing gear shaft and a linkage gear, and the meshing point is located below the lubricating oil tank to ensure sufficient lubrication.

Description

Technical Field

[0001] The invention particularly relates to a self-lubricating device for a speed increasing gear shaft pair. Background Art

[0002] In the prior art, there are mainly the following types of lubrication for gear pairs of speed increasing gear structures: oil immersion lubrication, oil stirring splash lubrication and forced lubrication. In the oil immersion lubrication method, part of the gear teeth below the largest gear are below the liquid level for a long time, and the gears periodically run to the bottom to achieve oil immersion, and bring the lubricating oil to other parts meshing with it during operation. The amount of oil immersed in traditional gearboxes is too much, and the oil stirring consumes a lot of energy, which reduces the transmission efficiency and increases the temperature. In the oil stirring splash lubrication method, the gears throw the lubrication attached to the stirring oil onto the box and other gears during the self-rotation process. In the forced lubrication method, oil is sprayed on one or both sides of the meshing to achieve lubrication of the gear pair, but the utilization rate of the sprayed lubricating oil is low, the forced lubrication structure is complex, and there are high requirements for design calculation and processing. It is difficult to accurately check the actual oil supply pressure and lubricating oil volume of each lubrication point, and the cost is high.

[0003] For example, the Chinese invention patent application document with the publication number "CN106151479A" discloses a gear lubrication device, which is mainly composed of a housing, an oil stirring gear, and an oil dripping device. The oil stirring gear and the oil dripping device are respectively placed below and above the housing. The oil dripping device is composed of a long U-shaped groove and several groups of oil baffles. The bottom plate of the U-shaped groove is provided with several groups of oil dripping holes distributed at intervals along the length. The oil dripping device is arranged above the gear group to collect and redistribute the lubricating oil, thereby achieving lubrication of the gear.

[0004] Since the speed-increasing gearbox has a compact structure, the input speed is as high as 4000 rpm, and the gear linear speed is fast. Although this solution can achieve lubrication of the gears, it is not suitable for the speed-increasing gearbox structure. The oil splash lubrication to the U-shaped groove is affected by the gear meshing rotation direction, speed, structure, etc., which is not only extremely inefficient, but also cannot ensure that the U-shaped groove is filled with oil everywhere, so the lubrication amount and lubrication points cannot be guaranteed. Furthermore, the oil transport only relies on the oil drip hole, and the lubrication effect is poor. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a self-lubricating device for a speed-increasing gear shaft pair in view of the deficiencies of the above-mentioned prior art. By setting an oil storage tank and a lubricating oil tank, active storage and continuous and effective supply of lubricating oil are achieved, and the lubricating oil can be more effectively controlled and distributed.

[0006] To achieve the above object, the present invention provides the following technical solutions: The self-lubricating device of the speed-increasing gear shaft pair comprises a speed-increasing gear box and a speed-increasing gear assembly arranged in the speed-increasing gear box, and is characterized in that an oil storage tank installed on the speed-increasing gear box is provided above the speed-increasing gear assembly, and silencer oil baffle plates are provided on both sides of the oil storage tank, and a lubricating oil tank is provided on the bottom plate of the oil storage tank, and the meshing position of the lubricating oil tank and the speed-increasing gear assembly corresponds to each other up and down.

[0007] With the above technical solution, the oil storage tank is used to store lubricating oil and provide sufficient lubricating oil for the speed-increasing gear pair; the muffler oil baffle is used to block the lubricating oil thrown into the gear below and drain the lubricating oil into the oil storage tank; the lubricating oil tank transports the lubricating oil in the oil storage tank to the meshing part of the speed-increasing gear pair to ensure the lubrication effect, and the amount of lubricating oil transported is larger and faster than that of the drip hole. Compared with the prior art, by setting up an oil storage tank, active storage of lubricating oil is achieved, and in conjunction with the lubricating oil tank, continuous and effective supply of lubricating oil to the meshing part is achieved. Compared with the passive lubrication method in the prior art that relies on stirring and splashing oil, the method provided by the present application can more effectively control and distribute lubricating oil, ensuring that there is always enough lubricating oil supply at the gear meshing part.

[0008] The self-lubricating device of the above-mentioned speed-increasing gear shaft pair can be further configured as follows: the bottom plate of the oil storage tank is provided with a through opening, and bent oil guide plates are respectively provided on both sides of the opening, and the end of each group of oil guide plates away from the oil storage tank is inclined toward the speed-increasing gear assembly, and the two groups of oil guide plates are symmetrically arranged and the two and the opening form a trapezoidal lubricating oil tank, the large end of the lubricating oil tank faces the top of the oil storage tank, and the small end faces the meshing part of the speed-increasing gear assembly; the oil storage tank is a trapezoidal body, and the large end of the trapezoidal body faces upward, and the small end faces the speed-increasing gear assembly.

[0009] With the above technical solution, two sets of oil guide plates cooperate with the opening to form a trapezoidal lubricating oil groove, which can not only more accurately guide the lubricating oil to the meshing transmission of the speed-increasing gear assembly, but also accelerate the flow rate of the oil due to the structural factors of the trapezoidal body with a large top and a small bottom, thereby achieving more efficient and accurate lubrication. The two sets of oil guide plates are respectively connected to the bend of the oil storage tank. This connection method can flexibly adjust the bending angle of the oil guide plate (tools such as wrenches can be used or the oil guide plate can be directly moved manually). After CFD software simulation software analysis and combined with actual operation, the oil output and oil flow rate of the lubricating oil groove are changed to better adapt to actual working conditions.

[0010] The self-lubricating device of the above-mentioned speed increasing gear shaft pair can be further configured as follows: an end plate is fixed above the speed increasing gear box, the oil storage tank is distributed in the speed increasing gear box, a plurality of groups of fixing columns are connected above the bottom plate of the oil storage tank, and the upper ends of the fixing columns are fixedly connected to the end plate.

[0011] With the above technical solution, the oil storage tank is arranged on the inner side of the end plate to prevent the oil from splashing out of the speed increasing gearbox. The fixing column not only supports the oil storage tank, but also ensures that the oil storage tank can be stably installed in the speed increasing gearbox.

[0012] The self-lubricating device of the above-mentioned speed increasing gear shaft pair can be further configured as follows: the lower end of the silencer oil baffle plate is welded and fixed to the side of the oil storage tank, the cross-section of the silencer oil baffle plate is a 1 / 4 arc, and the silencer oil baffle plate is bent towards the side away from the oil storage tank.

[0013] By adopting the above technical solution, the silencer oil baffle plate is set to have a cross-section of 1 / 4 arc, which increases the oil baffle area and allows more lubricating oil to be diverted into the oil storage tank.

[0014] The self-lubricating device of the above-mentioned speed-increasing gear shaft pair can be further configured as follows: there is an oil inlet gap between the lower end of the silencer oil baffle plate and the side of the oil storage tank, and a plurality of groups of spaced connecting rods are arranged at the oil inlet gap, one end of the connecting rod is welded and fixed to the side of the oil storage tank, and the other end is bent and connected to the lower end of the silencer oil baffle plate.

[0015] By adopting the above technical solution, an oil inlet gap is set, and the oil can be smoothly drained from the oil inlet gap to the oil storage tank under the guidance of the silencer oil baffle plate. The connecting rod is used to improve the connection stability between the silencer oil baffle plate and the speed increasing gearbox.

[0016] The self-lubricating device of the speed increasing gear shaft pair mentioned above can be further configured as follows: a chamfer is provided on the upper end side surface of the noise reducing oil baffle plate.

[0017] By adopting the above technical solution and setting the chamfer, the lubricating oil thrown out by the gear can be more effectively guided to flow along the silencer oil baffle, thereby reducing oil loss.

[0018] The self-lubricating device of the above-mentioned speed-increasing gear shaft pair can be further configured as follows: the speed-increasing gear assembly includes a main speed-increasing gear shaft and a secondary speed-increasing gear shaft which are parallel to each other and arranged at intervals, the main speed-increasing gear shaft is linked to a main speed-increasing gear, the secondary speed-increasing gear shaft is linked to a secondary speed-increasing gear, the main speed-increasing gear and the secondary speed-increasing gear are meshed with each other and the meshing points are distributed below the lubricating oil groove.

[0019] The beneficial effects of the present invention are as follows: by adding a silencer oil baffle plate and an oil storage tank, the silencer oil baffle plate blocks the oil, and the oil storage tank collects and supplies the oil. When the gearbox is running, the main speed-increasing gear and the auxiliary speed-increasing gear mesh with each other and rotate continuously. Each silencer oil baffle plate will block the lubricating oil thrown into the main speed-increasing gear and the auxiliary speed-increasing gear below. Every time the main speed-increasing gear and the auxiliary speed-increasing gear rotate one circle, the silencer oil baffle plate will block the oil once, and the lubricating oil will be collected in the oil storage tank as the main speed-increasing gear and the auxiliary speed-increasing gear rotate. The lubricating oil thrown out during the self-rotation of the main speed-increasing gear and the auxiliary speed-increasing gear adheres to the inner wall of the box, and part of it will also enter the oil storage tank. The lubricating oil stored in the oil storage tank is supplied to the main speed-increasing gear and the auxiliary speed-increasing gear pair through the lubrication slot hole. A large proportion of the lubricating oil is provided through the lubrication slot, so that the main speed-increasing gear and the auxiliary speed-increasing gear pair can continuously obtain sufficient lubricating oil.

[0020] Compared with the prior art, the present invention can effectively realize the lubrication of the main speed increasing gear shaft and the auxiliary speed increasing gear shaft gear pair, especially ensure that there is sufficient lubricating oil at the gear meshing position, and through the meshing of the main speed increasing gear and the auxiliary speed increasing gear, it also greatly improves the oil stirring and heat dissipation of the main speed increasing gear and the auxiliary speed increasing gear; the self-lubricating device of the speed increasing gear pair described in the present invention has a simple structure and high reliability, and can be realized by only making very small changes to the existing design, and is very easy to apply and promote.

[0021] The present invention is further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 It is a schematic diagram of the structure of the oil storage tank and the noise-absorbing oil baffle plate according to an embodiment of the present invention; Figure 3 It is a schematic cross-sectional view of an oil storage tank according to an embodiment of the present invention; Figure 4 A schematic cross-sectional view of a noise-absorbing oil baffle according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of a noise-absorbing oil baffle according to an embodiment of the present invention; Figure 6 It is a bottom view schematically showing an embodiment of the present invention.

[0023] Label notes: speed increasing gearbox 1, oil storage tank 2, silencer oil baffle plate 3, lubricating oil tank 4, oil guide plate 5, end plate 6, fixing column 7, oil inlet gap 8, connecting rod 9, chamfer 10, main speed increasing gear shaft 11, auxiliary speed increasing gear shaft 12, main speed increasing gear 13, auxiliary speed increasing gear 14. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] like Figures 1 to 6 The self-lubricating device of the speed-increasing gear shaft pair shown includes a speed-increasing gear box 1 and a speed-increasing gear assembly arranged in the speed-increasing gear box 1. An oil storage tank 2 installed on the speed-increasing gear box 1 is arranged above the speed-increasing gear assembly. Silence oil baffles 3 are arranged on both sides of the oil storage tank 2. A lubricating oil tank 4 is arranged on the bottom plate of the oil storage tank 2. The lubricating oil tank 4 corresponds to the meshing part of the speed-increasing gear assembly. The oil storage tank 2 is used to store lubricating oil and provide sufficient lubricating oil for the speed-increasing gear pair; the silencer oil baffle 3 is used to block the lubricating oil that enters from the gear below and drain the lubricating oil into the oil storage tank 2; the lubricating oil tank 4 transports the lubricating oil in the oil storage tank 2 to the meshing part of the speed-increasing gear pair to ensure the lubrication effect, and the amount of lubricating oil transported is larger and faster than that of the drip hole. Compared with the prior art, by setting the oil storage tank 2, active storage of lubricating oil is realized, and in conjunction with the lubricating oil tank 4, continuous and effective supply of lubricating oil to the meshing part is achieved. Compared with the passive lubrication method in the prior art that relies on stirring and splashing oil, the method provided by the present application can more effectively control and distribute the lubricating oil, ensuring that there is always sufficient lubricating oil supply at the gear meshing point.

[0026] The bottom plate of the oil storage tank 2 is provided with a through opening, and the two sides of the opening are respectively provided with oil guide plates 5 formed by bending, and the end of each group of oil guide plates 5 away from the oil storage tank 2 is inclined toward the speed-increasing gear assembly, and the two groups of oil guide plates 5 are symmetrically arranged and the two and the opening form a trapezoidal lubricating oil groove 4, and the large end of the lubricating oil groove 4 faces the top of the oil storage tank 2, and the small end faces the meshing part of the speed-increasing gear assembly; the oil storage tank 2 is a trapezoidal body, and the large end of the trapezoidal body faces the top, and the small end faces the speed-increasing gear assembly. The two groups of oil guide plates 5 cooperate with the opening to form a trapezoidal lubricating oil groove 4, which can not only more accurately guide the lubricating oil to the meshing transmission part of the speed-increasing gear assembly, but also accelerate the flow rate of the oil due to the structural factor that the trapezoidal body is large at the top and small at the bottom, thereby achieving more efficient and accurate lubrication. The two sets of oil guide plates 5 are respectively connected to the bends of the oil storage tank 2. This connection method can flexibly adjust the bending angle of the oil guide plate 5 (tools such as wrenches can be used, or the oil guide plate 5 can be directly moved manually). After CFD software simulation software analysis and combined with actual operation, the oil output and oil flow rate of the lubricating oil tank 4 are changed to better adapt to actual working conditions.

[0027] An end plate 6 is fixed above the speed increasing gearbox 1, and the oil storage tank 2 is distributed in the speed increasing gearbox 1. Two sets of fixing columns 7 are connected above the bottom plate of the oil storage tank 2, and the upper ends of the fixing columns 7 are fixedly connected to the end plate 6. The oil storage tank 2 is arranged on the inner side of the end plate 6 to prevent the oil from splashing out of the speed increasing gearbox 1. The fixing columns 7 not only play the role of supporting the oil storage tank 2, but also ensure that the oil storage tank 2 can be stably installed in the speed increasing gearbox 1.

[0028] The lower end of the silencer oil baffle plate 3 is welded and fixed to the side of the oil storage tank 2, and the cross section of the silencer oil baffle plate 3 is a 1 / 4 arc, and the silencer oil baffle plate 3 is bent toward the side away from the oil storage tank 2. The silencer oil baffle plate 3 is set to have a cross section of a 1 / 4 arc, which increases the oil baffle area, so that more lubricating oil can be drained into the oil storage tank 2.

[0029] There is an oil inlet gap 8 between the lower end of the silencer oil baffle plate 3 and the side of the oil storage tank 2. A plurality of groups of spaced connecting rods 9 are provided at the oil inlet gap 8. One end of the connecting rod 9 is welded and fixed to the side of the oil storage tank 2, and the other end is bent and connected to the lower end of the silencer oil baffle plate 3. The oil inlet gap 8 is provided so that the oil can be smoothly drained from the oil inlet gap 8 to the oil storage tank 2 under the guidance of the silencer oil baffle plate 3. The connecting rod 9 is used to improve the connection stability between the silencer oil baffle plate 3 and the speed increasing gearbox 1.

[0030] The upper side surface of the silencer oil baffle plate 3 is provided with a chamfer 10, which can more effectively guide the lubricating oil thrown out by the gear to flow along the silencer oil baffle plate 3, thereby reducing oil loss.

[0031] The speed-increasing gear assembly includes a main speed-increasing gear shaft 11 and a secondary speed-increasing gear shaft 12 which are parallel to each other and arranged at intervals. The main speed-increasing gear shaft 11 is linked to a main speed-increasing gear 13, and the secondary speed-increasing gear shaft 12 is linked to a secondary speed-increasing gear 14. The main speed-increasing gear 13 and the secondary speed-increasing gear 14 are meshed with each other and the meshing points are distributed below the lubricating oil groove 4.

[0032] In this embodiment, by adding the silencer oil baffle plate 3 and the oil storage tank 2, the silencer oil baffle plate 3 blocks the oil, and the oil storage tank 2 collects and supplies the oil. When the gearbox is running, the main speed-increasing gear 13 and the auxiliary speed-increasing gear 14 mesh with each other and rotate continuously. Each silencer oil baffle plate 3 will block the lubricating oil thrown into the main speed-increasing gear 13 and the auxiliary speed-increasing gear 14 below. Every time the main speed-increasing gear 13 and the auxiliary speed-increasing gear 14 rotate one circle, the silencer oil baffle plate 3 will block the oil once, and the lubricating oil will be collected in the oil storage tank 2 as the main speed-increasing gear 13 and the auxiliary speed-increasing gear 14 rotate. The lubricating oil thrown out during the self-rotation of the main speed-increasing gear 13 and the auxiliary speed-increasing gear 14 adheres to the inner wall of the box, and part of it will also enter the oil storage tank 2. The lubricating oil stored in the oil storage tank 2 is supplied to the main speed-increasing gear 13 and the auxiliary speed-increasing gear 14 through the lubrication slot hole. A large proportion of lubricating oil is provided through the lubrication slot, so that the main speed-increasing gear 13 and the auxiliary speed-increasing gear 14 can continuously obtain sufficient lubricating oil.

[0033] Compared with the prior art, the present embodiment can effectively realize the lubrication of the main speed-increasing gear shaft 11 and the auxiliary speed-increasing gear shaft 12 gear pair, especially ensure that there is sufficient lubricating oil at the gear meshing position, and through the meshing of the main speed-increasing gear 13 and the auxiliary speed-increasing gear 14, the oil stirring and heat dissipation of the main speed-increasing gear 13 and the auxiliary speed-increasing gear 14 are greatly improved; the self-lubricating device of the speed-increasing gear pair of the present invention has a simple structure and high reliability, and can be realized by only making a small change to the existing design, and is very easy to apply and promote.

Claims

1. A self-lubricating device for a speed-increasing gear shaft pair, comprising a speed-increasing gear box and a speed-increasing gear assembly arranged in the speed-increasing gear box, characterized in that: An oil storage tank installed on the speed-increasing gear box is provided above the speed-increasing gear assembly, and silencer oil baffles are provided on both sides of the oil storage tank. A lubricating oil tank is provided on the bottom plate of the oil storage tank, and the meshing part of the lubricating oil tank and the speed-increasing gear assembly corresponds to each other up and down.

2. The self-lubricating device of the speed increasing gear shaft pair according to claim 1, characterized in that: The bottom plate of the oil storage tank is provided with a through opening, and bent oil guide plates are respectively provided on both sides of the opening. The end of each group of oil guide plates away from the oil storage tank is inclined toward the speed increasing gear assembly. The two groups of oil guide plates are symmetrically arranged and form a trapezoidal lubricating oil tank with the opening. The large end of the lubricating oil tank faces the top of the oil storage tank, and the small end faces the meshing part of the speed increasing gear assembly. The oil storage tank is a trapezoidal body, and the large end of the trapezoidal body faces upward, and the small end faces the speed increasing gear assembly.

3. The self-lubricating device of the speed increasing gear shaft pair according to claim 2, characterized in that: An end plate is fixed above the speed increasing gearbox, the oil storage tank is distributed in the speed increasing gearbox, a plurality of groups of fixing columns are connected above the bottom plate of the oil storage tank, and the upper ends of the fixing columns are fixedly connected to the end plate.

4. The self-lubricating device of the speed increasing gear shaft pair according to claim 3 is characterized in that: The lower end of the silencer oil baffle plate is welded and fixed to the side of the oil storage tank. The cross section of the silencer oil baffle plate is a 1 / 4 arc, and the silencer oil baffle plate is bent towards the side away from the oil storage tank.

5. The self-lubricating device of the speed increasing gear shaft pair according to claim 4, characterized in that: There is an oil inlet gap between the lower end of the silencer oil baffle plate and the side of the oil storage tank, and a plurality of groups of spaced connecting rods are arranged at the oil inlet gap. One end of the connecting rod is welded and fixed to the side of the oil storage tank, and the other end is bent and connected to the lower end of the silencer oil baffle plate.

6. The self-lubricating device of the speed increasing gear shaft pair according to claim 5, characterized in that: The upper end side surface of the noise-absorbing and oil-blocking plate is provided with a chamfer.

7. The self-lubricating device of the speed increasing gear shaft pair according to any one of claims 1 to 5, characterized in that: The speed-increasing gear assembly includes a main speed-increasing gear shaft and a secondary speed-increasing gear shaft which are parallel to each other and arranged at intervals. The main speed-increasing gear shaft is linked to a main speed-increasing gear, and the secondary speed-increasing gear shaft is linked to a secondary speed-increasing gear. The main speed-increasing gear and the secondary speed-increasing gear are meshed with each other and the meshing points are distributed below the lubricating oil groove.

Images