Automatic lubricating device of bulldozer rotating shaft

Abstract

The invention provides an automatic lubricating device of a bulldozer, which comprises a plurality of first lubricating assemblies and a second lubricating assembly, the plurality of first lubricating assemblies are connected with a first rotating shaft of a lifting actuator close to a bulldozing bucket, a first rotating shaft of a tilting actuator close to two ends of the tilting actuator and a first rotating shaft of a push rod close to the bulldozing bucket in a one-to-one correspondence manner; the first sponge in each first lubricating assembly is arranged in the corresponding first lubricating cylinder in an anti-rotation mode. The first rotating shaft penetrates through the first lubricating cylinder to be connected with the first sponge and is used for extruding the first sponge during rotation; the multiple second lubricating assemblies are connected with the lifting actuator and a second rotating shaft, deviating from the bulldozing bucket, of the push rod in a one-to-one correspondence manner; one end of a second sponge in each second lubricating assembly is fixedly arranged on the first lubricating cylinder, and the other end of the second sponge is connected with the sealing ring. The second rotating shaft is connected with the sealing ring and used for extruding the second sponge through the sealing ring during rotation. According to the implementation mode, automatic lubrication can be carried out, a manual smearing mode is replaced, the workload of workers is reduced, and the lubrication efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bulldozers, and particularly relates to an automatic lubricating device for a bulldozer rotating shaft. BACKGROUND

[0002] A bulldozer is an important engineering machine, which is used for pushing and transporting earthwork. The bulldozer generally comprises a caterpillar or tire type bulldozer body, a bulldozer bucket, two lifting actuators, two tilting actuators and two push rods.

[0003] The two ends of each lifting actuator are pivotally connected to the bulldozer bucket and the upper side of the bulldozer body through rotating shafts. The front end of each push rod is pivotally connected to the bulldozer bucket and the bulldozer body through a rotating shaft. The two ends of each tilting actuator are pivotally connected to the bulldozer bucket and the push rod through rotating shafts. When the bulldozer bucket is lifted or tilted, the rotating shafts are used to transmit torque and change the transmission direction, thereby ensuring the normal operation of the bulldozer.

[0004] However, in actual use, mud and dust will adhere to the rotating shafts. In order to ensure the normal operation of the bulldozer, the rotating shafts need to be lubricated. The related lubricating method is that the workers use tools to apply lubricating oil to the rotating shafts. Since the positions of the rotating shafts are high and low, the manual method is low in efficiency. SUMMARY

[0005] The summary part of the present application is used to introduce the concepts in a brief form, which will be described in detail in the specific embodiments part. The summary part of the present application is not intended to identify the key features or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.

[0006] Some embodiments of the present application provide an automatic lubricating device for a bulldozer rotating shaft to solve the technical problems mentioned in the background part.

[0007] The automatic lubricating device for a bulldozer rotating shaft comprises a plurality of first lubricating assemblies and second lubricating assemblies, wherein, The plurality of first lubricating assemblies are one-to-one connected to the first rotating shafts of the lifting actuators close to the bulldozer bucket, the tilting actuators and the push rods close to the bulldozer bucket; Each first lubricating assembly comprises a first lubricating cylinder and a first sponge for absorbing lubricating oil; the first sponge is rotationally arranged in the first lubricating cylinder; the first rotating shaft is connected to the first sponge through the first lubricating cylinder, and is used to squeeze the first sponge when rotating; The plurality of second lubricating assemblies are one-to-one connected to the second rotating shafts of the lifting actuators and the push rods away from the bulldozer bucket; Each of the second lubricating assemblies comprises a first lubricating cylinder, a second sponge for absorbing lubricating oil, and a sealing ring slidably arranged to the first lubricating cylinder; one end of the second sponge is fixed to the first lubricating cylinder, and the other end is connected with the sealing ring; the second rotating shaft is connected with the sealing ring, and is used for extruding the second sponge through the sealing ring when rotating.

[0008] Optionally, the first lubricating cylinder is fixed to the hinged seat for supporting the first rotating shaft; and a first oil filling pipe is communicated with the top end of the first lubricating cylinder.

[0009] Optionally, a plurality of strip-shaped grooves are uniformly arranged on the outer circumference of the first sponge, a plurality of strip-shaped ribs are arranged on the inner wall of the first lubricating cylinder, and the plurality of strip-shaped grooves are matched with the plurality of strip-shaped grooves.

[0010] Optionally, a plurality of protrusions are arranged in an annular array on the open end of the first rotating shaft; the first sponge is arranged in an annular shape, and a plurality of recesses matched with the plurality of protrusions are arranged on the inner ring of the first sponge; and a plurality of first springs are arranged in an annular array on the first sponge.

[0011] Optionally, the first lubricating assembly further comprises a sealing cover detachably connected with the first lubricating cylinder; a threaded groove is arranged on the end of the first lubricating cylinder facing the sealing cover, and the sealing cover is threadedly connected with the first lubricating cylinder; and a buckle groove is arranged on the side of the sealing cover away from the first lubricating cylinder.

[0012] Optionally, a clamping piece is arranged on the side of the sealing cover close to the first lubricating cylinder, and a positioning groove is radially arranged on the first lubricating cylinder. The clamping piece comprises a clamping plate fixed to the sealing cover, a rotating barrel fixedly connected to the middle part of the clamping plate, a rotating head rod arranged on the top end of the rotating barrel, and a telescopic rod inserted into the rotating barrel and fixedly connected to the bottom end of the rotating head rod. The telescopic rod is rotationally connected with the rotating barrel, and a clamping block outside the rotating barrel is fixedly connected to the bottom end of the telescopic rod; after the sealing cover plate is rotated into position, the clamping block can be rotated into the positioning groove.

[0013] Optionally, the telescopic rod is further sleeved with a second spring, the upper end of the second spring is fixedly connected with the rotating barrel, and the lower end of the second spring is fixedly connected with the telescopic rod.

[0014] Optionally, a connecting block is fixedly arranged on the bulldozer body, the second lubricating cylinder is fixedly connected with the connecting block, the second lubricating assembly further comprises a bearing sleeved to the second rotating shaft, the second rotating shaft passes through the inner ring of the bearing and extends into the second lubricating cylinder. The outer ring of the bearing is fixedly connected with the second lubricating cylinder, and a sealing ring is rotatably sleeved to the side of the second rotating shaft facing the bearing, and the sealing ring is tightly engaged with the outer ring of the bearing.

[0015] Optionally, the second lubricating cylinder is in the form of an annular chamber, and a fixed plate slidably connected with the sealing ring is fixedly arranged above the second lubricating cylinder. The lower part of the sealing ring is fixedly connected with a movable plate connected with the second rotating shaft, and the second sponge is arranged between the fixed plate and the movable plate. When the second rotating shaft rotates, the movable plate extrudes the second sponge.

[0016] Optionally, the upper end of the second lubricating cylinder is provided with a second oil filling pipe communicated with the second sponge, the second oil filling pipe extends out of the connecting block, and an electromagnetic valve is arranged on the second oil filling pipe. The upper part and the lower part of the side of the second lubricating cylinder facing the bearing are provided with upper and lower leak holes, the sealing ring blocks the upper leak hole in the initial position, when the second rotating shaft rotates, the sealing ring is separated from the upper leak hole and blocks the lower leak hole, so that the lubricating liquid is discharged from the upper leak hole, and when the second rotating shaft returns to the initial position, the lubricating liquid is returned to the second sponge from the lower leak hole.

[0017] The above-mentioned embodiments of the present application have the following beneficial effects: According to the connection mode of the first rotating shaft and the second rotating shaft, the first lubricating assembly and the second lubricating assembly are arranged to automatically lubricate, which replaces the manual smearing mode, reduces the work load of the workers, and improves the lubricating effect.

[0018] In the first lubricating assembly, the first rotating shaft rotates to act on the first sponge, so that the first sponge is extruded. In this way, the lubricating oil stored in the first sponge can overflow to lubricate the first rotating shaft.

[0019] In the second lubricating assembly, one end of the second sponge is fixedly connected with the first lubricating cylinder, and the other end is connected with the sealing ring. The second rotating shaft is connected with the sealing ring and can drive the sealing ring to rotate relative to the first lubricating cylinder when rotating. In this way, the second sponge is extruded, and the lubricating oil stored in the second sponge can lubricate the second rotating shaft. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0021] Figure 1 It is a structural schematic view of an embodiment of the automatic lubricating device of the bulldozer of the present application; Figure 2 It is a structural schematic view of some embodiments of the first lubricating assembly and the second lubricating assembly of the present application; Figure 3 It is a structural schematic view of an embodiment of the first lubricating assembly of the present application; Figure 4 Structure diagram of another embodiment of the first lubricating assembly of the present application; Figure 5 Structure diagram of an embodiment of the first sponge of the present application; Figure 6 Structure diagram of an embodiment of the sealing cover of the present application; Figure 7 Structure diagram of Figure 6 Enlarged view of A in FIG. 6; Figure 8 Structure diagram of an embodiment of the second lubricating assembly of the present application; Figure 9 Structure diagram of another embodiment of the second lubricating assembly of the present application.

[0022] Explanation of reference numerals: 1, bulldozer body; 2, bulldozer bucket; 3, lifting actuator; 4, tilting actuator; 5, push rod; 6, first lubricating assembly; 61, first lubricating cylinder; 611, first oil filling pipe; 612, threaded groove; 613, positioning groove; 614, first sponge; 6141, strip-shaped groove; 6142, recess; 6143, first spring; 615, strip-shaped rib; 62, sealing cover; 621, buckle groove; 622, clamping plate; 623, rotating cylinder; 624, rotating head rod; 625, telescopic rod; 626, second spring; 627, clamping block; 7, second lubricating assembly; 71, second lubricating cylinder; 711, upper leakage hole; 712, lower leakage hole; 713, fixing plate; 72, second oil filling pipe; 721, electromagnetic valve; 73, second sponge; 74, sealing ring; 741, movable plate; 75, bearing; 76, sealing ring; 8, first rotating shaft; 81, hinged seat; 82, protruding block; 9, second rotating shaft; 10, connecting block. DETAILED DESCRIPTION

[0023] The technical solutions of the present application will be described clearly and completely below in conjunction with embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0024] In the description of the present application, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like are based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0025] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited. In addition, the terms "mounting", "connecting", "connecting" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0027] Please refer to Figure 1 and Figure 2 An automatic lubricating device for a bulldozer rotating shaft of the present application comprises a plurality of first lubricating assemblies 6 and second lubricating assemblies 7.

[0028] The above-mentioned first lubricating assemblies 6 are connected to the first rotating shaft 8 of the lifting actuator 3 close to the dozer bucket 2, the first rotating shaft 8 at both ends of the tilting actuator 4, and the first rotating shaft 8 of the push rod 5 close to the dozer bucket 2, one by one, for providing lubricating oil to the first rotating shaft 8.

[0029] Please refer to Figures 3 to 5 The first lubricating assembly 6 comprises a first lubricating cylinder 61, a first sponge 614, and a sealing cover 62. The first lubricating cylinder 61 is fixedly arranged on the hinge seat 81 for supporting the first rotating shaft 8, and the top end of the first lubricating cylinder 61 is communicated with a first oil filling pipe 611 for adding lubricating oil into the first lubricating cylinder 61.

[0030] The first sponge 614 is placed in the first lubricating cylinder 61 to prevent rotation. Specifically, the outer circumference of the first sponge 614 is uniformly provided with a plurality of strip-shaped grooves 6141, and the inner wall of the first lubricating cylinder 61 is provided with a plurality of strip-shaped ribs 615, which cooperate with the strip-shaped grooves 6141 to prevent the first sponge 614 from rotating relative to the first lubricating cylinder 61. At the same time, the first sponge 614 can slide along the strip-shaped ribs 615, thereby facilitating replacement of the first sponge 614.

[0031] The open end of the first rotating shaft 8 (the left end of the first rotating shaft 8) Figure 3 extends out of the hinge seat 81 and rotatably extends into the first lubricating cylinder 61 and is connected to the first sponge 614. The open end of the first rotating shaft 8 is annularly provided with a plurality of protrusions 82, and the first sponge 614 can be annularly arranged and provided with a plurality of grooves 6142 on the inner ring that are adapted to the plurality of protrusions 82.

[0032] In use, first, the top end of the first oil filling pipe 611 is opened, and lubricating oil is added to the first lubricating cylinder 61, which is adsorbed and stored by the first sponge 614. During operation of the first rotating shaft 8, the protrusions 82 are rotated to scrape the first sponge 614, and the lubricating oil in the first sponge 614 flows along the protrusions 82. Because the first sponge 614 has adsorption, the amount of flowing lubricating oil is small. As the number of rotations of the first rotating shaft 8 increases, the lubricating oil gradually enters the gap between the first rotating shaft 8 and the hinge seat 81, achieving automatic lubrication.

[0033] Further, a plurality of first springs 6143 can be annularly arranged inside the first sponge 614. The force generated by the rotation of the protrusions 82 can deform the first sponge 614, and the elastic force of the first springs 6143 can reset the first springs 6143, facilitating subsequent scraping of the protrusions 82 and improving the reliability of the device.

[0034] Please refer to Figure 6 and Figure 7The sealing cover 62 is detachably connected with the first lubricating cylinder 61. Specifically, the end of the first lubricating cylinder 61 facing the sealing cover 62 is provided with a threaded groove 612, which can be screwed with the sealing cover 62. The side of the sealing cover 62 away from the first lubricating cylinder 61 is provided with a buckle groove 621. The side of the sealing cover 62 close to the first lubricating cylinder 61 is provided with a clamping piece, which includes a clamping plate 622 fixedly connected with the sealing cover 62. The middle of the clamping plate 622 is fixedly connected with a rotating drum 623, the top end of the rotating drum 623 is rotatably connected with a rotating head rod 624, the bottom end of the rotating head rod 624 extends into the rotating drum 623 and is fixedly connected with an extension rod 625. The extension rod 625 is rotatably connected with the rotating drum 623, and the bottom end of the extension rod 625 is fixedly connected with a clamping block 627 outside the rotating drum 623. The extension rod 625 is also sleeved with a second spring 626, the upper end of the second spring 626 is fixedly connected with the rotating drum 623, and the lower end of the second spring 626 is fixedly connected with the extension rod 625. The first lubricating cylinder 61 is radially provided with a positioning groove 613 at a position corresponding to the clamping piece, and the clamping block 627 can be clamped into the positioning groove 613.

[0035] During assembly, first, the first sponge 614 is sleeved between the first lubricating cylinder 61 and the protrusion 82. Next, the sealing cover 62 is connected with the threaded groove 612, so that the sealing cover 62 is fixedly arranged on the first lubricating cylinder 61.

[0036] Before the sealing cover 62 is rotated, the rotating head rod 624 needs to be lifted upward, so that the bottom of the clamping block 627 is engaged with the outer edge of the first lubricating cylinder 61. After the sealing cover 62 is rotated to the position, the clamping block 627 coincides with the positioning groove 613, and the first spring 6143 pushes the clamping block 627 into the positioning groove 613.

[0037] Finally, the rotating head rod 624 is rotated, the rotating head rod 624 drives the clamping block 627 to be clamped in the positioning groove 613, and at this time the sealing cover 62 is completely fixed.

[0038] When cleaning the first lubricating cylinder 61, first, the rotating head rod 624 is rotated to drive the extension rod 625 to rotate, and the extension rod 625 drives the clamping block 627 to rotate in the positioning groove 613. Next, the rotating head rod 624 is pulled away from the first lubricating cylinder 61, the rotating head rod 624 drives the extension rod 625 and the clamping block 627 to move, and the clamping block 627 is pulled out of the positioning groove 613. Finally, the sealing cover 62 is rotated to separate the sealing cover 62 from the first lubricating cylinder 61. In this way, the first lubricating cylinder 61 can be cleaned or the first sponge 614 can be replaced.

[0039] It should be noted that the positioning groove is provided with an opening at the upper end, which is matched with the clamping block 627, and the opening is communicated with an annular groove below, which can be used for rotating the clamping block 627.

[0040] By setting the clamping piece, the stability of the sealing cover 62 can be improved, and the sealing cover 62 can be prevented from falling off due to collision and vibration during work.

[0041] Please refer to Figure 8 and Figure 9 and refer back to Figure 1 and Figure 2 , a plurality of second lubricating assemblies 7 are connected to the second rotating shaft 9 of the lifting actuator 3 and the second rotating shaft 9 of the push rod 5 away from the dozer bucket 2 one by one. The above-mentioned second lubricating assembly 7 can be fixed to the bulldozer body 1. Taking the second rotating shaft 9 of the push rod 5 away from the dozer bucket 2 as an example, a connecting block 10 can be fixed to the bulldozer body 1, and the second rotating shaft 9 can be rotatably inserted into the connecting block 10 and connected to the second lubricating assembly 7 fixed in the connecting block 10.

[0042] Specifically, the above-mentioned second lubricating assembly 7 includes a second lubricating cylinder 71 and a bearing 75. The above-mentioned second lubricating cylinder 71 is fixedly connected with the connecting block 10, the second rotating shaft 9 passes through the inner ring of the bearing 75 and extends into the second lubricating cylinder 71. The outer ring of the bearing 75 is fixedly connected with the second lubricating cylinder 71. The side of the second rotating shaft 9 facing the bearing 75 rotatably sleeves a sealing ring 76, which is tightly engaged with the outer ring of the bearing 75, for preventing dust from entering and lubricating oil from leaking.

[0043] The second lubricating cylinder 71 is an annular chamber, a fixed plate 713 is fixedly arranged above the second lubricating cylinder 71. A sealing ring 74 is rotatably arranged in the second lubricating cylinder 71, and the sealing ring 74 is slidably connected with the fixed plate 713. Specifically, the bottom of the fixed plate 713 can be fixedly connected with the inner ring of the second lubricating cylinder 71, and the top plate and side plate of the fixed plate 713 are slidably connected with the inner wall of the sealing ring 74.

[0044] The lower side of the sealing ring 74 is fixedly provided with a movable plate 741, and the movable plate 741 is fixedly connected with the second rotating shaft 9. A second sponge 73 for adsorbing lubricating oil is arranged between the fixed plate 713 and the movable plate 741.

[0045] The upper end of the second lubricating cylinder 71 is provided with a second oil filler pipe 72 communicating with the second sponge 73, and the second oil filler pipe 72 can extend out of the connecting block 10. An electromagnetic valve 721 is arranged on the second oil filler pipe 72. Upper and lower leak holes 711 and 712 are formed on the upper and lower sides of the side of the second lubricating cylinder 71 facing the bearing 75. In the initial position, the sealing ring 74 only blocks the upper leak hole 711.

[0046] In use, first open the electromagnetic valve 721, the lubricating oil from the second oil pipe 72 into the second sponge 73 adsorbed. Second shaft 9 in the working process, through the inner ring of the bearing 75 relative to the second lubricating cylinder 71 rotation, thus driving the movable plate 741 and the sealing ring 74 rotation. Because the second sponge 73 is arranged between the fixed plate 713 and the movable plate 741, the movable plate 741 will extrude the second sponge 73. To Figure 7 For example, the second shaft 9 clockwise rotation, the second sponge 73 is gradually extruded upwards, the sealing ring 74 also rotates clockwise at this time, so as to separate the upper leak hole 711, so that the lubricating liquid is discharged from the upper leak hole 711, into the bearing 75, thereby lubricating the bearing 75 and the second shaft 9, gradually flowing to the bottom end of the bearing 75. While the sealing ring 74 rotates clockwise can always block the lower leak hole 712, so that the lubricating oil cannot be discharged.

[0047] When the second shaft 9 counterclockwise rotation, back to the initial position, the sealing ring 74 block the upper leak hole 711, lubricating liquid can enter the lower leak hole 712, by the second sponge 73 adsorbed. In this way, the lubricating oil can be recycled.

[0048] Finally, the bulldozer body 1 can be provided with a lubricating oil storage device, which can be communicated with the first oil pipe 611 or the second oil pipe 72 through the pipeline, and the lubricating oil is pumped into the first sponge 614 and the second sponge 73, so as to supplement the lubricating oil.

[0049] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An automatic lubrication device for a bulldozer shaft, characterized in that, It includes multiple first lubrication components and second lubrication components, wherein, Multiple first lubrication components are connected one-to-one with the first rotating shafts of the lifting actuator near the bulldozer bucket, the two ends of the tilting actuator, and the push rod near the bulldozer bucket. Each of the first lubrication components includes a first lubrication cylinder and a first sponge for absorbing lubricating oil; the first sponge is placed inside the first lubrication cylinder in an anti-rotation manner; the first rotating shaft passes through the first lubrication cylinder and is connected to the first sponge, for squeezing the first sponge during rotation; Multiple second lubrication components are connected one-to-one with the second rotating shaft of the lifting actuator and push rod opposite to the bulldozer bucket; Each of the second lubrication components includes a first lubrication cylinder, a second sponge for absorbing lubricating oil, and a sealing ring slidably disposed on the first lubrication cylinder; one end of the second sponge is fixed to the first lubrication cylinder, and the other end is connected to the sealing ring; the second rotating shaft is connected to the sealing ring and is used to squeeze the second sponge through the sealing ring during rotation.

2. The automatic lubrication device for bulldozer shafts according to claim 1, characterized in that, The first lubrication cylinder is fixed to a hinged seat for supporting the first rotating shaft; the top end of the first lubrication cylinder is connected to a first oil filling pipe.

3. The automatic lubrication device for bulldozer shafts according to claim 2, characterized in that, The outer circumference of the first sponge is uniformly provided with multiple strip grooves, and the inner wall of the first lubrication cylinder is provided with multiple strip ribs, with the multiple strip grooves cooperating with each other.

4. The automatic lubrication device for bulldozer shafts according to claim 3, characterized in that, The first rotating shaft has a ring array of multiple protrusions on its open end; the first sponge is arranged in a ring, and the inner ring has multiple grooves that are adapted to the multiple protrusions; the first sponge has a ring array of multiple first springs.

5. The automatic lubrication device for bulldozer shafts according to claim 4, characterized in that, The first lubrication assembly also includes a sealing cover detachably connected to a first lubrication cylinder. The end of the first lubrication cylinder facing the sealing cover is provided with a threaded groove and is threadedly connected to the sealing cover. The side of the sealing cover away from the first lubrication cylinder is provided with a snap-fit ​​groove.

6. The automatic lubrication device for bulldozer shafts according to claim 5, characterized in that, The sealing cap is provided with a snap-fit ​​component on the side near the first lubrication cylinder, and the first lubrication cylinder is provided with a positioning groove in the radial direction. The snap-fit ​​component includes a snap-fit ​​plate fixed to the sealing cover, a rotating cylinder fixedly connected to the middle of the snap-fit ​​plate, a rotating head rod provided at the top of the rotating cylinder, and a telescopic rod fixedly connected to the bottom end of the rotating head rod extending into the rotating cylinder. The telescopic rod is rotatably connected to the rotating drum, and a locking block outside the rotating drum is fixedly connected to the bottom end of the telescopic rod; after the sealing cover is rotated into place, the locking block can be screwed into the positioning groove.

7. The automatic lubrication device for bulldozer shafts according to claim 6, characterized in that, The telescopic rod is also fitted with a second spring, the upper end of which is fixedly connected to the rotating drum, and the lower end of which is fixedly connected to the telescopic rod.

8. The automatic lubrication device for bulldozer shafts according to claim 1, characterized in that, A connecting block is fixedly provided on the main body of the bulldozer, and the second lubrication cylinder is fixedly connected to the connecting block. The second lubrication assembly also includes a bearing sleeved on the second rotating shaft, and the second rotating shaft passes through the inner ring of the bearing and extends into the second lubrication cylinder. The outer ring of the bearing is fixedly connected to the second lubrication cylinder, and a sealing ring is rotatably fitted on the side of the second rotating shaft facing the bearing, which is tightly engaged with the outer ring of the bearing.

9. The automatic lubrication device for bulldozer shafts according to claim 8, characterized in that, The second lubrication cylinder is an annular chamber, and a fixed plate that is slidably connected to the sealing ring is fixedly installed at the top inside the second lubrication cylinder; A movable plate that is fixedly connected to the second rotating shaft is fixedly provided below the sealing ring, and the second sponge is placed between the fixed plate and the movable plate; When the second shaft rotates, the movable plate squeezes the second sponge.

10. The automatic lubrication device for bulldozer shafts according to claim 9, characterized in that, The upper end of the second lubrication cylinder is provided with a second oiling pipe that connects to the second sponge. The second oiling pipe extends out of the connecting block and is equipped with a solenoid valve. The second lubrication cylinder has an upper leakage hole and a lower leakage hole on the side facing the bearing. In the initial position, the sealing ring blocks the upper leakage hole. When the second shaft rotates, the sealing ring disengages from the upper leakage hole and blocks the lower leakage hole, allowing the lubricant to be discharged from the upper leakage hole. When the second shaft returns to the initial position, the lubricant flows back to the second sponge from the lower leakage hole.

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