Lubricating device and lubricating mechanism for gear of slewing mechanism

Abstract

The invention discloses a lubricating device and a lubricating mechanism for a gear of a slewing mechanism, which can solve the problem that the upper part of a gear meshing part of the slewing mechanism is insufficiently lubricated by adding lubricating devices on two sides of a slewing speed reducer in the slewing mechanism. The structure of the lubricating device can be better matched with an existing slewing mechanism, and lubricating grease is lifted. According to the lubricating mechanism, full lubrication of the upper middle portion of the meshing portion of the slewing reducer gear and the slewing bearing inner gear ring is achieved, abrasion of the tooth surface of the gear can be reduced, the time for generating noise, transmission efficiency reduction and other problems caused by abrasion of the tooth surface can be prolonged, and the service life of the slewing bearing inner ring and the slewing reducer gear is prolonged. And the economic cost and the maintenance time cost caused by abrasion of the inner gear ring of the slewing mechanism and the tooth surface of the gear of the slewing speed reducer are reduced.

Description

Technical Field

[0001] The invention relates to a lubricating device and a lubricating mechanism for a slewing mechanism gear, belonging to the technical field of slewing bearing and slewing reducer gear lubricating devices. Background Art

[0002] The slewing mechanism is a device that connects the vehicle upper body and the chassis. Its core components are the slewing bearing and the slewing assembly. The inner ring of the slewing bearing is connected to the chassis, and the outer ring is connected to the turntable, and they are assembled by bolt connection. The slewing mechanism drives the rotation of the excavator upper body by meshing the slewing reducer gear at the bottom of the slewing assembly with the inner gear ring of the slewing bearing. Lubrication is essential for gear transmission. Once lubrication fails, excessive wear of the tooth surface, distortion of the tooth shape, and increased clearance between the teeth will occur, which will generate impact and noise, reduce the gear transmission efficiency, reduce the working efficiency of the equipment, and even cause faults such as broken teeth, reducing the service life of the slewing bearing.

[0003] At present, the main method for lubricating the slewing bearing and the slewing reducer gear pair, such as the excavator, is to design a butter pool for storing grease between the lower frame, the upper frame (turntable) and the slewing mechanism, and inject 5mm-20mm of grease into the butter pool to submerge the lower surface of the slewing reducer gear. When the excavator upper vehicle rotates, the grease in the butter pool is brought up by the rotation and meshing extrusion of the slewing reducer gear itself, and splashed onto the inner gear ring of the slewing bearing and the upper part of the upper gear of the slewing reducer to achieve lubrication of the gear pair. The grease in the butter pool should be replaced regularly to ensure the lubrication effect.

[0004] In the existing lubrication method, since the excavator is under low speed and heavy load when performing the rotation action, the grease is also affected by its own gravity and viscosity characteristics. Therefore, the amount of grease splashed onto the gear ring by the rotation of the rotary reducer is small and the splash height is low, and the purpose of fully lubricating the middle and upper parts of the gear pair cannot be achieved.

[0005] The existing slewing bearing gear lubrication scheme can only fully lubricate the lower part of the gear pair and play a basic lubrication role in the middle, but cannot fully lubricate the upper part. Failure to fully lubricate the gear pair will aggravate the wear between the gears and reduce the service life of the slewing mechanism.

[0006] Therefore, those skilled in the art are in urgent need of improving the existing lubrication technology for slewing bearing gears. Summary of the invention

[0007] Purpose: In order to overcome the deficiencies in the prior art, the present invention provides a lubricating device and a lubricating mechanism for a slewing mechanism gear. The lubricating device uses the principle of a spiral pump to lift the grease to the upper part of the gear pair, thereby achieving lubrication of the middle and upper parts of the gear. The lubricating mechanism uses lubricating devices added to both sides of the slewing reducer gear. The upper gear of the lubricating device meshes with the inner gear ring of the slewing bearing and rotates with the rotation of the upper vehicle, while driving the spiral rod connected thereto to rotate. The rotation of the spiral rod lifts the grease to the upper part of the inner gear ring of the slewing bearing. Under the extrusion of the closed cavity of the lubricating device, the grease flows to the upper part of the gear of the inner gear ring of the slewing bearing, thereby achieving full lubrication of the middle and upper parts of the gear.

[0008] Technical solution: To solve the above technical problems, the technical solution adopted by the present invention is:

[0009] In the first aspect, a lubrication device for a rotary mechanism gear comprises: a housing, a first opening is provided on the housing, the first opening is used to allow the teeth of a driven component to extend from the first opening, and a second opening is provided on the housing, the second opening is used for grease to flow into the housing from the second opening. A main shaft is provided in the housing, a driven component is provided on the main shaft at the first opening, the driven component is used to drive the main shaft to rotate, and a spiral blade is provided on the main shaft between the first opening and the second opening. The top end of the main shaft extends from the top of the housing, and a shaft sleeve is provided on the top end of the main shaft.

[0010] As a preferred solution, a first guide plate and a second guide plate are respectively provided on both sides of the second opening.

[0011] As a preferred solution, the opening angles of the first guide plate and the second guide plate are set to a V-shaped structure.

[0012] As a preferred solution, an upper cover is also provided on the top of the shell.

[0013] As a preferred solution, a bottom cover is provided at the bottom of the shell, a through hole is provided on the bottom cover, a sphere is provided in the through hole, and one end of the sphere is clamped on the bottom end of the main shaft.

[0014] As a preferred solution, a mounting portion is provided at the periphery of the top of the shell, and a through hole is provided on the mounting portion.

[0015] In the second aspect, a lubrication mechanism for a rotating mechanism gear comprises: a large base plate of a turntable and a grease pool, and at least two lubrication devices, wherein the two lubrication devices are respectively a first lubrication device and a second lubrication device. The first lubrication device and the second lubrication device both comprise: a housing, wherein a first opening is provided on the housing, and the first opening is used to allow the teeth of a driven component to extend from the first opening, and a second opening is provided on the housing, and the second opening is used for grease to flow into the housing from the second opening. A main shaft is provided in the housing, and a driven component is provided on the main shaft at the first opening, and the driven component is used to drive the main shaft to rotate, and a spiral blade is provided on the main shaft between the first opening and the second opening. The top end of the main shaft extends from the top of the housing, and a shaft sleeve is provided on the top end of the main shaft.

[0016] A first lubricating device is provided on the counterclockwise rotation side of the output gear of the rotary reducer, and a second lubricating device is provided on the clockwise rotation side of the output gear of the rotary reducer. The driven component of the first lubricating device meshes with the inner gear ring of the rotary bearing, and the driven component of the second lubricating device meshes with the inner gear ring of the rotary bearing. The sleeve of the first lubricating device is clamped in the first blind hole on the large bottom plate of the turntable, and the sleeve of the second lubricating device is clamped in the second blind hole on the large bottom plate of the turntable. The housing of the first lubricating device is connected to the large bottom plate of the turntable, and the housing of the second lubricating device is connected to the large bottom plate of the turntable. The bottom of the housing of the first lubricating device is in contact with the bottom plate of the butter pool, and the bottom of the housing of the second lubricating device is in contact with the bottom plate of the butter pool. The spiral blades of the first lubricating device are set as a left-handed structure, and the spiral blades of the second lubricating device are set as a right-handed structure.

[0017] As a preferred solution, the first lubricating device and the second lubricating device both further include: an upper cover, and the top of the housing of the first lubricating device and the second lubricating device is also provided with an upper cover.

[0018] As a preferred embodiment, the first lubrication device and the second lubrication device also include: a sphere. The bottom of the shell of the first lubrication device and the second lubrication device is provided with a bottom cover, and the bottom cover is also provided with a through hole. The sphere is provided in the through hole, and one end of the sphere is clamped on the bottom end of the main shaft, and the other end of the sphere is clamped on the bottom plate of the butter pool.

[0019] As a preferred solution, the second opening of the first lubricating device is oriented in a counterclockwise direction, and the second opening of the second lubricating device is oriented in a clockwise direction.

[0020] As a preferred solution, the first lubrication device and the second lubrication device both further include: a first guide plate and a second guide plate, and the first guide plate and the second guide plate are respectively provided on both sides of the second opening of the first lubrication device and the second lubrication device.

[0021] As a preferred solution, the opening angles of the first guide plate and the second guide plate of the first lubricating device and the second lubricating device are both set to a V-shaped structure.

[0022] As a preferred solution, the periphery of the top of the housing of the first lubricating device and the second lubricating device are both provided with mounting parts, and the mounting parts are provided with through holes.

[0023] As a preferred solution, the distances between the first lubrication device, the second lubrication device and the output gear of the rotary reducer are all smaller than a threshold value, so that the maximum diameter circle of the lubrication device housing is tangent or nearly tangent to the mounting hole of the rotary reducer, and the gear pitch circle is tangent or nearly tangent to the pitch circle of the inner gear ring of the slewing bearing.

[0024] As a preferred solution, a first gap is provided between the bottom of the driven component of the first lubricating device and the second lubricating device and the housing.

[0025] As a preferred solution, a second gap is provided between the upper surface of the main shaft top and the lower surface of the sleeve of the first lubrication device and the second lubrication device.

[0026] As a preferred solution, a third gap is provided between the main shaft and the through hole of the first lubrication device and the second lubrication device.

[0027] Beneficial effects: The present invention provides a lubricating device and a lubricating mechanism for a rotary mechanism gear. The structure of the lubricating device of the present invention can better cooperate with the existing rotary mechanism to achieve an improvement in grease.

[0028] The lubrication mechanism of the present invention adds lubrication devices on both sides of the slewing reducer in the slewing mechanism, which can solve the problem of insufficient lubrication of the upper part of the meshing part of the slewing mechanism gear. Achieving sufficient lubrication of the middle and upper part of the meshing part between the slewing reducer gear and the inner gear ring of the slewing support can reduce the wear of the gear tooth surface, prolong the time for problems such as noise and reduced transmission efficiency caused by tooth surface wear, and increase the life of the inner ring of the slewing support and the slewing reducer gear. Reduce the economic cost and maintenance time cost caused by the wear of the inner gear ring of the slewing mechanism and the tooth surface of the slewing reducer gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the lubrication device of the present invention from one perspective.

[0030] Figure 2 It is a structural schematic diagram of the lubrication device of the present invention from another perspective.

[0031] Figure 3 It is a front view structural schematic diagram of the lubrication device of the present invention.

[0032] Figure 4The schematic diagram of the structure of the lubrication device of the present invention is shown in FIG. 1 , with the upper cover removed.

[0033] Figure 5 It is a cross-sectional schematic diagram of the lubrication mechanism of the present invention.

[0034] Figure 6 It is a bottom schematic diagram of the lubrication mechanism of the present invention.

[0035] Figure 7 for Figure 6 A partial enlarged schematic diagram of part I.

[0036] Figure 8 for Figure 6 Schematic diagram of the cross section of AA, where: Figure 8 The middle Ⅱ is an enlarged view of the structure between the gear and the upper housing. Figure 8 Figure Ⅲ in the middle is an enlarged view of the structure between the sleeve and the main shaft. Figure 8 Figure IV in the middle is an enlarged view of the structure between the through hole and the bottom of the main shaft.

[0037] Fig. 9 It is a schematic diagram of the three-dimensional structure of the first lubrication device and the second lubrication device.

[0038] Fig.10 It is a schematic diagram of the structure of the first lubrication device and the second lubrication device, wherein: Fig.10 Figure a is a schematic diagram of the right-hand structure of the first lubrication device. Fig.10 Figure b is a schematic diagram of the left-hand structure of the second lubrication device. DETAILED DESCRIPTION

[0039] The following is a clear and complete description of the technical solutions in the examples of the present invention in conjunction with the accompanying drawings in the examples 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 those skilled in the art without creative work are within the protection scope of the present invention.

[0040] The present invention will be further described below in conjunction with specific embodiments.

[0041] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0042] Embodiment 1:

[0043] This embodiment introduces a lubricating device for a rotary mechanism gear, such as Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the lubricating device 1 comprises: an upper housing 101, an oil delivery component 102, the bottom of the upper housing 101 is connected to the top of the oil delivery component 102, and the bottom of the upper housing 101 is in conduction with the top of the oil delivery component 102. The upper housing 101 is provided with a first opening 103, which is used to allow the gear teeth to extend from the first opening, the bottom of the oil delivery component 102 is provided with a bottom cover 104, and the upper part of the oil delivery component 102 is provided with a second opening 105, which is used for grease to flow into the oil delivery component from the second opening. A main shaft 106 is provided in the upper housing 101 and the oil delivery component 102, a gear 107 is provided on the main shaft 106 in the upper housing 101, and a spiral blade 108 is provided on the main shaft 106 below the gear 107. The top end of the main shaft 106 extends from the top of the upper housing 101, and the top end of the main shaft 106 is provided with a shaft sleeve 109.

[0044] Furthermore, a first guide plate 110 and a second guide plate 111 are respectively disposed on both sides of the second opening 105 .

[0045] Furthermore, the opening angles of the first guide plate 110 and the second guide plate 111 are set to a V-shaped structure.

[0046] Furthermore, an upper cover 112 is disposed on the top of the upper shell 101 .

[0047] Furthermore, a through hole is provided on the bottom cover 104 , a sphere 113 is provided in the through hole, and one end of the sphere 113 is clamped on the bottom end of the main shaft 106 .

[0048] Furthermore, a mounting portion 114 is disposed around the top of the upper shell 101 , and a through hole 115 is disposed on the mounting portion 114 .

[0049] Furthermore, the oil delivery component 102 is configured as a tubular structure.

[0050] Furthermore, in one embodiment, the upper shell 101 and the oil delivery component 102 are combined into a shell, a main shaft 106 is arranged in the shell, a first opening 103 and a second opening 106 are also arranged on the shell, a gear 107 is arranged on the main shaft 106 at the first opening, and a spiral blade 108 is arranged on the main shaft between the first opening 103 and the second opening 106.

[0051] Furthermore, the gear 107 is designed as a driven component of a multi-stage gear system, a combination of a ratchet and a gear, or a combination of the above structures, and the driven component is used to provide power to the main shaft 106 .

[0052] Embodiment 2:

[0053] This embodiment introduces a lubrication mechanism for a rotary mechanism gear, such as Figure 5As shown, it includes: a turntable base plate 2, a rotary reducer 3, and a butter pool 4. The conventional structure of the rotary mechanism is that a rotary reducer 3 is arranged on the turntable base plate 2, and the turntable base plate 2 is fixed to the outer ring 501 of the rotary support 5. The gear 301 of the rotary reducer 3 is meshed with the inner gear ring 502 of the rotary support 5, and the inner gear ring 502 of the rotary support 5 is fixed to the lower vehicle, and the inner gear ring 502 of the rotary support 5 and the lower vehicle structure constitute an annular butter pool 4.

[0054] like Figure 6 As shown, it also includes: at least two lubricating devices described in Example 1, and the two lubricating devices described in Example 1 are respectively a first lubricating device 6 and a second lubricating device 7. The first lubricating device 6 and the second lubricating device 7 both include: an upper shell, an oil delivery component, the bottom of the upper shell is connected to the top of the oil delivery component, and the bottom of the upper shell is in conduction with the top of the oil delivery component. A first opening is provided on the upper shell, for allowing the teeth of the gear to extend from the first opening, a bottom cover is provided at the bottom of the oil delivery component, and a second opening is provided on the top of the oil delivery component, for grease to flow into the oil delivery component from the second opening. A main shaft is provided in the upper shell and the oil delivery component, a gear is provided on the main shaft in the upper shell, and a spiral blade is provided on the main shaft below the gear. The top end of the main shaft extends from the top of the upper shell, and a shaft sleeve is provided at the top end of the main shaft.

[0055] A first lubricating device 6 is provided on the counterclockwise rotating side of the gear 301 of the rotary reducer, and a second lubricating device 7 is provided on the clockwise rotating side of the gear 301 of the rotary reducer 3. The gear of the first lubricating device 6 meshes with the inner gear ring 502, and the gear of the second lubricating device 7 meshes with the inner gear ring 502. The sleeve of the first lubricating device 6 is clamped in the first blind hole on the large base plate 2 of the turntable, and the sleeve of the second lubricating device 7 is clamped in the second blind hole on the large base plate 2 of the turntable. The upper shell of the first lubricating device 6 is connected to the large base plate 2 of the turntable, and the upper shell of the second lubricating device 7 is connected to the large base plate 2 of the turntable. The bottom cover of the first lubricating device 6 contacts the bottom plate of the butter pool 4, and the bottom cover of the second lubricating device 7 contacts the bottom plate of the butter pool 4. The spiral blades of the first lubricating device 6 are set as a left-handed structure, and the spiral blades of the second lubricating device 7 are set as a right-handed structure.

[0056] Furthermore, the first lubrication device 6 and the second lubrication device 7 both include: an upper cover. The top of the upper shell of the first lubrication device 6 and the second lubrication device 7 is also provided with an upper cover, which is used to further allow the grease lifted by the spiral blade to flow from the first opening on the semi-enclosed space formed by the upper shell and the upper cover to the upper part of the inner gear ring.

[0057] Furthermore, the first lubrication device 6 and the second lubrication device 7 both include: a sphere, and a through hole is provided on the bottom cover of the first lubrication device 6 and the second lubrication device 7, and a sphere is provided in the through hole, and one end of the sphere is clamped on the bottom end of the main shaft, and the other end of the sphere is clamped on the bottom plate of the butter pool 4.

[0058] Furthermore, the second opening of the first lubricating device 6 is oriented in a counterclockwise direction, and the second opening of the second lubricating device 7 is oriented in a clockwise direction.

[0059] Furthermore, the first lubricating device 6 and the second lubricating device 7 each further include: a first guide plate and a second guide plate. The first guide plate and the second guide plate are respectively provided on both sides of the second opening of the first lubricating device 6 and the second lubricating device 7.

[0060] Furthermore, the opening angles of the first guide plate and the second guide plate of the first lubricating device 6 and the second lubricating device 7 are both set to a V-shaped structure.

[0061] Furthermore, the periphery of the top of the upper shell of the first lubricating device 6 and the second lubricating device 7 are both provided with a mounting portion, and the mounting portion is provided with a through hole.

[0062] Furthermore, the clockwise rotation direction refers to the clockwise rotation direction of the large base plate of the turntable when looking up from the disembarkation position.

[0063] Further, such as Figure 7 As shown, the first opening of the first lubricating device 6 faces the inner gear ring 502, and the gear 107 of the first lubricating device 6 extends from the first opening to mesh with the inner gear ring 502. Similarly, the first opening of the second lubricating device 7 faces the inner gear ring 502, and the gear 107 of the second lubricating device 7 extends from the first opening to mesh with the inner gear ring 502.

[0064] Furthermore, the distances between the first lubrication device 6, the second lubrication device 7 and the gear 301 of the rotary reducer 3 are all smaller than a threshold value, so that the maximum diameter circle of the lubrication device housing is tangent to the mounting hole of the rotary reducer, and the gear pitch circle is tangent to the pitch circle of the inner gear ring of the rotary bearing.

[0065] Further, such as Figure 8 As shown, the top of the upper shell of the second lubricating device 7 is installed on the bottom of the turntable large base plate 2. Figure 8 Part of Figure II A first gap 2 - 7 is provided between the bottom of the gear in the upper housing of the second lubricating device 7 and the bottom of the upper housing.

[0066] The shaft sleeve of the second lubricating device 7 is clamped in the second blind hole of the turntable base plate 2. The shaft sleeve is made of copper and has a clearance fit with the second blind hole. Before assembly, the second blind hole should be coated with butter. Figure 8 Part of Figure III The middle sleeve and the main shaft are interference fit, and there is a second gap 2-8 between the upper surface of the main shaft and the lower surface of the sleeve, and the size of the second gap is 0.5-1mm.

[0067] The bottom of the main shaft of the second lubrication device 7 extends out from the through hole of the bottom cover and contacts with the bottom of the butter pool 4 through the ball. The spacing of the through holes is 2-5-1. There is a third gap 2-9 between the main shaft and the through holes. At the same time, the main shaft and the bottom plate of the butter pool are in contact through a steel ball to assist in limiting the movement in the up and down directions, while also ensuring the second gap 2-8 between the main shaft and the sleeve, and the first gap 2-7 between the gear and the upper shell.

[0068] During operation, the friction between the steel ball and the main shaft and the bottom plate of the grease pool is rolling friction, and at the same time, it is submerged under the grease, reducing the friction damage of the components. The first gap 2-7, the second gap 2-8, and the third gap 2-9 also achieve self-lubrication due to the passage of grease.

[0069] Similarly, the structure of the first lubricating device is consistent with the above description, which is used to increase the service life of the lubricating device.

[0070] Embodiment 3:

[0071] This embodiment introduces the working principle of a lubrication device for a rotating mechanism gear. The gear rotates under the action of external power, driving the spiral blade on the main shaft to rotate upward, which is used to drive the grease entering from the second opening on the oil delivery component to enter the upper shell through the upward rotating spiral blade and flow out from the first opening on the upper shell to lubricate the components meshing with the gear.

[0072] In order to increase the service life of the lubrication device, the following design is adopted.

[0073] The sleeve is made of copper and has a clearance fit with the blind hole. The blind hole should be coated with butter before assembly.

[0074] The sleeve and the main shaft are interference fit, and there is a gap between the upper surface of the main shaft and the lower surface of the sleeve, with a gap size of 0.5-1mm.

[0075] In order to reduce the spindle's runout caused by its excessive length during operation, a through hole is added to the bottom of the housing to form a clearance fit with the spindle. At the same time, the spindle and the bottom plate of the grease pool are in contact through steel balls to assist in limiting the upward and downward movement, while also ensuring the clearance between the spindle and the sleeve, and the clearance between the gear and the housing. During operation, the friction between the steel ball and the spindle and the bottom plate is rolling friction, and it is submerged below the grease, reducing friction damage to components.

[0076] The above gaps also achieve self-lubrication due to the passage of grease.

[0077] Embodiment 4:

[0078] This embodiment introduces the working principle of a lubrication mechanism for a rotary mechanism gear. Fig. 9 As shown in the figure, the upper part of the lubricating device is inserted into the blind hole and fixed to the large bottom plate of the turntable with bolts. The blind hole, the copper sleeve, the main shaft, the lower part of the housing and the ball together constrain all degrees of freedom of the lubricating device except axial rotation. The lower part of the lubricating device contacts the bottom plate of the grease pool through the steel ball, which is used to assist in limiting the movement of the lubricating device in the up and down directions, so that there is a gap between the gear and the housing.

[0079] Two blind holes are opened on the large bottom plate of the turntable, which are respectively used to install the first lubrication device and the second lubrication device. The first lubrication device and the second lubrication device have similar structures. The main difference is that the rotation direction of the screw rod in the lubrication device is exactly opposite to the guide direction of the bottom oil suction port. The rotation direction of the screw rod in the first lubrication device is left-handed, and the opening of the bottom oil suction port is facing counterclockwise, while the rotation direction of the screw rod in the second lubrication device is right-handed, and the opening of the bottom oil suction port is facing clockwise.

[0080] The positions of the first blind hole and the second blind hole should be as close as possible to the slewing reducer. For example, the maximum diameter circle of the lubrication device housing should be tangent to the mounting hole of the slewing reducer to determine the positions of the first blind hole and the second blind hole. However, interference between the lubrication device and the output pinion of the slewing reducer should be avoided. The gear pitch circle of the lubrication device should be tangent to the pitch circle of the inner gear ring of the slewing bearing to ensure smooth transmission.

[0081] like Figure 6 As shown, when the upper car rotates in a clockwise direction relative to the inner gear ring of the slewing bearing (note: the inner gear ring and the lower car are fixed), the gears of the first lubricating device and the second lubricating device are meshed with the gears of the inner gear ring of the slewing bearing, and the gears rotate counterclockwise under the rotation of the upper car. Since the second opening of the second lubricating device is facing the clockwise rotation direction, which is the same as the rotation direction of the upper car, the second lubricating device, driven by the upper car, introduces the grease from the second opening into the second lubricating device. At the same time, Fig.10 As shown in (a), since the spiral blade of the second lubrication device is a right-handed structure, when the spiral blade rotates counterclockwise driven by the gear, the spiral blade lifts the grease to the upper part of the inner gear ring of the slewing bearing, thereby achieving lubrication of a section of the gear pair rotating in the clockwise direction.

[0082] Similarly, when the upper car rotates counterclockwise relative to the inner gear ring of the slewing bearing, the gear of the first lubricating device rotates clockwise under the rotation of the upper car. The second opening of the first lubricating device faces counterclockwise, which is the same as the rotation direction of the upper car. Therefore, the first lubricating device, driven by the upper car, introduces the grease from the second opening into the first lubricating device. Fig.10As shown in (b), since the spiral blade of the first lubrication device is a left-handed structure, when the spiral blade rotates clockwise driven by the gear, the spiral blade lifts the grease to the upper part of the inner gear ring of the slewing bearing, thereby achieving lubrication of a section of the gear pair rotating in the counterclockwise direction.

[0083] The invention is designed based on the principle of a screw pump, and uses the rotation of the excavator upper vehicle to provide power to drive the lubrication device to work, so as to lift the grease in the grease pool to the upper part of the meshing gear pair, and fully lubricate the meshing gear pair;

[0084] The lubrication device is directly fixed on the large base plate, and contacts the bottom plate of the grease pool through steel balls at the lower part of the device, so as to constrain the movement of the lubrication device in the axial direction and ensure its necessary clearance. At the same time, the clearance between the shaft sleeve and the main shaft of this device realizes self-lubrication due to the passage of grease, thereby reducing its own wear.

[0085] The location of the lubrication device installation hole on the large base plate should be as close as possible to the rotary reducer position to ensure the lubrication effect. The location can be determined by referring to the following methods: a. The maximum diameter circle of the lubrication device housing is tangent or nearly tangent to the rotary reducer installation hole; b. The pitch circle of the lubrication device gear is tangent to the pitch circle of the inner gear ring of the slewing bearing; c. If the installation hole interferes with the slewing reducer, the position mentioned in item a should be adjusted, but the pitch circle of the meshing gears must be tangent to ensure smooth transmission; d. There should be at least 2 devices, and the rotation direction of the spiral rod at different positions is different to ensure that the upper part of the inner teeth of the slewing bearing can be lubricated regardless of whether the slewing mechanism is rotating forward or reverse.

[0086] The device is not limited to the above-described form, and the gears may also be inverted, as long as the lower grease collecting port of the screw rod is immersed in the grease.

[0087] In another form, the gear meshing with the inner gear ring can be designed as a combination of a multi-stage gear system, a ratchet and a gear combination, and other structural forms.

[0088] The present invention is not limited to the excavator industry, but can also be used in other industries such as the meshing lubrication of the slewing bearing gear of a crane.

[0089] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A lubricating device for a rotary mechanism gear, comprising: A shell, characterized in that: a first opening is provided on the shell, the first opening is used to allow the teeth of the driven component to extend from the first opening, and a second opening is provided on the shell, the second opening is used for grease to flow into the shell from the second opening; a main shaft is provided in the shell, a driven component is provided on the main shaft at the first opening, the driven component is used to drive the main shaft to rotate, and a spiral blade is provided on the main shaft between the first opening and the second opening; the top end of the main shaft extends from the top of the shell, and the top end of the main shaft is provided with a sleeve.

2. The lubricating device for a rotary mechanism gear according to claim 1, characterized in that: A first guide plate and a second guide plate are respectively arranged on both sides of the second opening.

3. The lubrication device for a rotary mechanism gear according to claim 2, characterized in that: The opening angles of the first guide plate and the second guide plate are set to a V-shaped structure.

4. The lubricating device for a rotary mechanism gear according to claim 1, characterized in that: An upper cover is also arranged on the top of the shell.

5. The lubricating device for a rotary mechanism gear according to claim 1, characterized in that: A bottom cover is arranged at the bottom of the shell body, a through hole is arranged on the bottom cover, a sphere is arranged in the through hole, and one end of the sphere is clamped on the bottom end of the main shaft.

6. The lubricating device for a rotary mechanism gear according to claim 1, characterized in that: A mounting portion is arranged around the top of the shell, and a through hole is arranged on the mounting portion.

7. A lubrication mechanism for a rotary mechanism gear, comprising: The large bottom plate of the turntable and the grease pool are characterized in that: they also include: at least two lubricating devices, the two lubricating devices are respectively a first lubricating device and a second lubricating device; the first lubricating device and the second lubricating device both include: a shell, a first opening is provided on the shell, the first opening is used to make the teeth of the driven component extend from the first opening, a second opening is provided on the shell, the second opening is used for grease to flow into the shell from the second opening; a main shaft is provided in the shell, a driven component is provided on the main shaft at the first opening, the driven component is used to drive the main shaft to rotate, and a spiral blade is provided on the main shaft between the first opening and the second opening; the top end of the main shaft extends from the top of the shell, and the top end of the main shaft is provided with a sleeve; A first lubrication device is provided on the counterclockwise rotation side of the output gear of the rotary reducer, and a second lubrication device is provided on the clockwise rotation side of the output gear of the rotary reducer; the driven component of the first lubrication device is meshed with the inner gear ring of the rotary bearing, and the driven component of the second lubrication device is meshed with the inner gear ring of the rotary bearing; the sleeve of the first lubrication device is clamped in the first blind hole on the large bottom plate of the turntable, and the sleeve of the second lubrication device is clamped in the second blind hole on the large bottom plate of the turntable; the housing of the first lubrication device is connected to the large bottom plate of the turntable, and the housing of the second lubrication device is connected to the large bottom plate of the turntable; the bottom of the housing of the first lubrication device is in contact with the bottom plate of the butter pool, and the bottom of the housing of the second lubrication device is in contact with the bottom plate of the butter pool; the spiral blades of the first lubrication device are set as a left-handed structure, and the spiral blades of the second lubrication device are set as a right-handed structure.

8. The lubrication mechanism for the gear of a rotary mechanism according to claim 7, characterized in that: The first lubricating device and the second lubricating device both further include an upper cover. The upper cover is also provided on the top of the housing of the first lubricating device and the second lubricating device.

9. The lubrication mechanism for the gear of a rotary mechanism according to claim 7, characterized in that: The first lubrication device and the second lubrication device both further include: a sphere. A bottom cover is provided at the bottom of the shell of the first lubrication device and the second lubrication device. A through hole is also provided on the bottom cover. A sphere is provided in the through hole. One end of the sphere is clamped on the bottom end of the main shaft, and the other end of the sphere is clamped on the bottom plate of the butter pool.

10. The lubrication mechanism for the gear of a rotary mechanism according to claim 7, characterized in that: The second opening of the first lubricating device is oriented in a counterclockwise direction, and the second opening of the second lubricating device is oriented in a clockwise direction.

11. The lubrication mechanism for the gear of a rotary mechanism according to claim 7, characterized in that: The first lubricating device and the second lubricating device both further include: a first guide plate and a second guide plate. The first guide plate and the second guide plate are respectively arranged on both sides of the second opening of the first lubricating device and the second lubricating device.

12. The lubrication mechanism for the gear of a rotary mechanism according to claim 11, characterized in that: The opening angles of the first guide plate and the second guide plate of the first lubricating device and the second lubricating device are both set to a V-shaped structure.

13. The lubrication mechanism for the gear of a rotary mechanism according to claim 7, characterized in that: The periphery of the top of the shell of the first lubricating device and the second lubricating device are both provided with a mounting portion, and the mounting portion is provided with a through hole.

14. The lubrication mechanism for the gear of a rotary mechanism according to claim 7, characterized in that: The distances between the first lubrication device, the second lubrication device and the output gear of the rotary reducer are all smaller than a threshold value.

15. The lubrication mechanism for the gear of a rotary mechanism according to claim 7, characterized in that: A first gap is provided between the bottom of the driven component of the first lubricating device and the second lubricating device and the housing.

16. The lubrication mechanism for the gear of a rotary mechanism according to claim 7, characterized in that: A second gap is provided between the upper surface of the main shaft top and the lower surface of the sleeve of the first lubricating device and the second lubricating device.

17. The lubrication mechanism for the gear of a rotary mechanism according to claim 9, characterized in that: A third gap is provided between the main shaft and the through hole of the first lubricating device and the second lubricating device.

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