Automatic lubricating grease filling device

Abstract

The utility model provides an automatic lubricating grease filling device, which relates to the technical field of lubricating grease filling, and comprises a base, a top plate and a filling cylinder, the left part and the right part of the base are respectively and rotatably connected with a group of rotating shafts, the lower ends of the group of rotating shafts at the front side of the right part are arranged at the upper end of a motor, and screw rods are fixed at the upper ends of the rotating shafts; a movable pressing plate is movably arranged on the lead screw, a top plate is arranged below the movable pressing plate in parallel, a piston rod is arranged at the lower end of the top plate and moves in a filling cylinder in a lifting mode, an oil filling pipe opening is connected to the lower portion of the rear side face of the filling cylinder, a check valve is installed at the oil filling pipe opening, and a chain wheel is installed at the upper end of the lead screw; and the chain wheel is in transmission connection with a chain. The piston rod is conveniently and stably pressed to move downwards, the moving-down direction is stable and reliable, abrasion between the piston rod and the inner wall of the oil injection cylinder is reduced, a piston moving-down limiting structure is arranged, lubricating grease is prevented from leaking to the position above the piston plate, and using is safer and more reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of lubricating grease filling, in particular to an automatic lubricating grease filling device. Background Art

[0002] With the rapid development of the automobile industry, the energy loss and wear caused by the friction pairs of automobile moving parts cannot be ignored. The lubrication system plays a vital role. The centralized lubrication system of automobile chassis has become a necessary device for large and medium-sized buses above Grade 2. The main part of the centralized lubrication system is grease, which is a structural dispersion system formed by base oil, thickener and various additives.

[0003] In the specification of a lithium-based grease automatic filling device in the prior art (publication number CN104696693A), it is mentioned that "it includes a support with a circular groove on the top, an oil barrel is fixedly connected to the support, the oil barrel is clamped in the circular groove on the top of the support, an oil suction pipe is provided at the bottom of the oil barrel, the oil suction pipe extends from the bottom of the support and the end is fixedly connected to the oil pump, and the oil pump is provided with an oil outlet pipe. A circular piston is provided in the oil barrel, a screw is installed in the middle of the top of the piston, the upper end of the screw extends from the top of the oil barrel, a sleeve is fixedly connected to the middle of the top of the oil barrel, the upper end of the screw is inserted into the sleeve, and a freely rotatable secondary bevel gear is installed on the top of the sleeve". However, the screw in the prior art lacks stable guidance when moving downward, and the piston is also limited after moving downward, which can easily press over the oil nozzle, causing the lubricating grease in the oil nozzle to enter between the upper end surface of the piston and the oil barrel, resulting in grease jamming, and it is not stable and reliable to use. Utility Model Content

[0004] In order to overcome the defects of the prior art, an automatic grease filling device is provided to solve the problem that the screw in the prior art lacks stable guidance when moving downward, and the piston is limited after moving downward, which makes it easy to press over the oil nozzle, causing the grease in the oil nozzle to enter between the upper end surface of the piston and the oil barrel, causing grease jamming, and the use is not stable and reliable.

[0005] To achieve the above-mentioned purpose, an automatic lubricating grease filling device is provided, comprising a base, a top plate and a filling cylinder, the left and right parts of the base are rotatably connected with a group of rotating shafts, and the lower end of a group of rotating shafts on the front side of the right part is installed on the upper end of the motor, a screw rod is fixed to the upper end of the rotating shaft, and a movable pressure plate is movably arranged on the screw rod, a top plate is arranged parallel to the lower side of the movable pressure plate, and a piston rod is arranged at the lower end of the top plate, the piston rod is lifted and moved in the filling cylinder, and a refueling pipe opening is connected to the lower part of the rear side surface of the filling cylinder, and a check valve is installed at the refueling pipe opening.

[0006] Furthermore, a sprocket wheel is installed on the upper end of the screw rod, and a chain is connected to the sprocket wheel for transmission, and two sets of movable sleeves are fixed to the left and right ends of the movable pressure plate, and each set of movable sleeves is movably connected to the corresponding screw rod on the same side.

[0007] Furthermore, two groups of guide rods are arranged on the left and right parts of the lower end surface of the movable pressure plate, and springs are arranged on the outer sleeves of the guide rods, and the lower ends of the springs are pressed on the upper end surface of the top plate.

[0008] Furthermore, two groups of first holes are opened on the left and right parts of the top plate, each group of first holes is arranged outside a corresponding group of rotating shafts on the same side, and the lower end of the piston rod is fixed to the middle part of the piston, and a sealing surface layer is provided on the outer side of the piston, and the sealing surface layer is made of silicone rubber.

[0009] Furthermore, an upper fixed plate is provided on the top of the filling cylinder, and the piston rod is arranged through the center of the upper fixed plate, and a limiting block is provided on the lower part of the inner wall of the filling cylinder, and an oil outlet pipe is provided in the middle part of the lower end of the filling cylinder, and a lower joint is provided at the lower end of the oil outlet pipe.

[0010] Furthermore, a stainless steel inner surface layer is provided on the inner side of the filling cylinder, an upper cover is disposed on the upper portion of the filling cylinder, and two groups of second holes are provided on the upper left and right portions of the upper side of the upper cover, and each group of second holes is disposed outside the corresponding rotating shaft on the same side.

[0011] The beneficial effects of the utility model are:

[0012] 1. The utility model uses a motor to rotate the shaft clockwise to drive the screw rod to rotate together, so that through the transmission effect between the chain wheel and the chain at the upper end of each group of screw rods, the four groups of screw rods rotate together clockwise to drive the movable pressure plate to move straight up, and the counterclockwise rotation of the shaft and screw rod will drive the movable pressure plate to move straight down;

[0013] 2. The movable pressure plate moves downward to suppress the spring and the top plate, and will press the piston rod and the piston downward together. The piston will press the lubricating grease in the filling cylinder out through the oil outlet pipe to achieve the purpose of automatic filling of lubricating grease. The movable pressure plate and the top plate play an elastic buffering role to avoid excessive punching. When the movable pressure plate moves upward, the piston rod and the piston move upward synchronously, and at the same time, lubricating grease will be injected into the filling cylinder through the filling pipe.

[0014] 3. The first set of holes on the left and right parts of the top plate of the utility model are arranged outside the rotating shaft, which plays a role of straight positioning, so that the piston rod and the piston can be pressed down stably and reliably.

[0015] 4. The filling cylinder of the utility model is stably covered on the filling cylinder, and the inner surface of the stainless steel provided on the inner wall of the filling cylinder is smooth and rust-proof, so that the outer surface of the piston can be in smooth contact, which is convenient for smooth up and down movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view schematic diagram of an embodiment of the utility model;

[0017] Figure 2 It is a top view schematic diagram of an embodiment of the utility model;

[0018] Figure 3 It is a cross-sectional schematic diagram of an embodiment of the utility model;

[0019] Figure 4 This is a schematic diagram of the filling cylinder effect of an embodiment of the utility model.

[0020] In the figure: 1. base; 10. motor; 11. rotating shaft; 12. screw rod; 13. sprocket wheel; 14. chain; 15. movable pressure plate; 16. guide rod; 17. movable sleeve; 18. spring; 2. top plate; 20. first set of holes; 21. piston rod; 22. piston; 23. sealing surface; 3. filling cylinder; 30. stainless steel inner surface; 31. upper cover; 32. upper fixing plate; 33. second set of holes; 34. limit block; 35. filling pipe opening; 36. oil outlet pipe; 37. lower joint. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the utility model clearer, the utility model is further described in detail in combination with the accompanying drawings and embodiments. The specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model. Specific details such as specific system structures and technologies are proposed in order to more thoroughly understand the embodiments of the utility model. The described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. However, it should be clear to those skilled in the art that the utility model can also be implemented in other embodiments without these specific details. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present disclosure.

[0022] The specific implementation of the utility model is described in detail below with reference to the accompanying drawings.

[0023] Figure 1 It is a front view schematic diagram of an embodiment of the utility model, Figure 2 A schematic top view of an embodiment of the utility model, Figure 3 A cross-sectional schematic diagram of an embodiment of the utility model and Figure 4 This is a schematic diagram of the filling cylinder effect of an embodiment of the utility model.

[0024] Reference Figures 1 to 4As shown, the utility model provides an automatic lubricating grease filling device, including a base 1, a top plate 2 and a filling cylinder 3, the left and right parts of the base 1 are rotatably connected with a group of rotating shafts 11, and the lower ends of a group of rotating shafts 11 on the front side of the right part are installed on the upper end of the motor 10, a screw rod 12 is fixed to the upper end of the rotating shaft 11, and a movable pressure plate 15 is movably arranged on the screw rod 12, a top plate 2 is arranged below the movable pressure plate 15 in parallel, and a piston rod 21 is arranged at the lower end of the top plate 2, the piston rod 21 is movable in the filling cylinder 3, and the lower part of the rear side surface of the filling cylinder 3 is connected with a filling pipe opening 35.

[0025] In this embodiment, a sprocket wheel 13 is installed at the upper end of the screw rod 12, and a chain 14 is transmission-connected to the sprocket wheel 13, and two sets of movable sleeves 17 are fixed to the left and right ends of the movable pressure plate 15, and each set of movable sleeves 17 is movably connected to the corresponding screw rod 12 on the same side; two sets of guide rods 16 are provided on the left and right parts of the lower end surface of the movable pressure plate 15, and a spring 18 is arranged on the outer sleeve of the guide rod 16, and the lower end of the spring 18 is pressed on the upper end surface of the top plate 2.

[0026] As a preferred embodiment, the utility model rotates the shaft 11 clockwise by the motor 10, driving the screw rod 12 to rotate together, so that through the transmission effect between the sprocket wheel 13 and the chain 14 at the upper end of each group of screw rods 12, the four groups of screw rods 12 rotate together clockwise to drive the movable pressure plate 15 to move straight up, and the counterclockwise rotation of the shaft 11 and the screw rod 12 will drive the movable pressure plate 15 to move straight down;

[0027] The movable pressure plate 15 moves downward to suppress the spring 18 and the top plate 2, and will press the piston rod 21 and the piston 22 downward together. The piston 22 will press the lubricating grease in the filling cylinder 3 out through the oil outlet pipe 36, so as to achieve the purpose of automatic filling of lubricating grease. Among them, the 8 between the movable pressure plate 15 and the top plate 2 plays the role of elastic buffer to avoid excessive punching; when the movable pressure plate 15 moves forward, the piston rod 21 and the piston 22 move upward synchronously, and at the same time, the lubricating grease will be injected into the filling cylinder 3 through the filling pipe opening 35.

[0028] In this embodiment, two groups of first holes 20 are opened on the left and right parts of the top plate 2, and each group of first holes 20 is arranged outside the corresponding group of rotating shafts 11 on the same side, and the lower end of the piston rod 21 is fixed to the middle of the piston 22, and a sealing surface layer 23 is provided on the outer side of the piston 22, and the sealing surface layer 23 is made of silicone rubber.

[0029] As a preferred embodiment, the first set of holes 20 on the left and right parts of the top plate 2 of the utility model are sleeved outside the rotating shaft 11, which plays a straight positioning effect, so that the piston rod 21 and the piston 22 can be pressed down stably and reliably.

[0030] In this embodiment, an upper fixing plate 32 is provided on the top of the filling cylinder 3, and the piston rod 21 is arranged through the center of the upper fixing plate 32, and a limiting block 34 is provided on the lower part of the inner wall of the filling cylinder 3, and an oil outlet pipe 36 is provided in the middle of the lower end of the filling cylinder 3, and a lower joint 37 is provided at the lower end of the oil outlet pipe 36; an upper cover 31 is arranged on the upper outer sleeve of the filling cylinder 3, and two groups of second holes 33 are opened on the upper left and right parts of the upper side of the upper cover 31, and each group of second holes 33 is arranged outside the corresponding rotating shaft 11 on the same side.

[0031] As a preferred embodiment, the filling cylinder 3 of the utility model is stably covered on the filling cylinder 3, and the stainless steel inner surface layer 30 provided on the inner wall of the filling cylinder 3 is smooth and rust-proof, so that the outer surface of the piston 22 can be in smooth contact, which is convenient for smooth up and down movement.

[0032] The utility model can effectively solve the problems in the prior art that the screw rod lacks stable guidance when moving downward, and the piston is limited after moving downward, which makes it easy to press over the oil nozzle, causing the lubricating grease in the oil nozzle to enter between the upper end surface of the piston and the oil barrel, resulting in grease jamming and unstable and unreliable use. The utility model facilitates and stably presses the piston rod to move downward, the downward movement direction is stable and reliable, and the wear between the piston rod and the inner wall of the oil filling cylinder is reduced. A piston downward movement limiting structure is provided to prevent the lubricating grease from leaking into the upper part of the piston plate, which is safer and more reliable to use.

[0033] The above embodiments are used to explain the present invention rather than to limit the present invention. Any modifications and changes made to the present invention within the spirit of the present invention and the scope of the claims for protection shall be included in the protection scope of the present invention.

Claims

1. An automatic lubricating grease filling device, characterized in that: The invention comprises a base (1), a top plate (2) and a filling cylinder (3), wherein the left and right parts of the base (1) are both rotatably connected to a group of rotating shafts (11), and the lower end of a group of rotating shafts (11) on the front side of the right part is mounted on the upper end of a motor (10), a screw rod (12) is fixed to the upper end of the rotating shaft (11), and a movable pressure plate (15) is movably arranged on the screw rod (12), a top plate (2) is arranged below the movable pressure plate (15) in parallel, and a piston rod (21) is arranged at the lower end of the top plate (2), and the piston rod (21) is movable in the filling cylinder (3), and a refueling pipe opening (35) is connected to the lower part of the rear side surface of the filling cylinder (3), and a check valve is installed on the refueling pipe opening (35).

2. The automatic lubricating grease filling device according to claim 1, characterized in that: A sprocket wheel (13) is installed at the upper end of the screw rod (12), and a chain (14) is transmission-connected to the sprocket wheel (13), and two groups of movable sleeves (17) are fixed at both left and right ends of the movable pressure plate (15), and each group of movable sleeves (17) is movably connected to the corresponding screw rod (12) on the same side.

3. The automatic lubricating grease filling device according to claim 1, characterized in that: Two groups of guide rods (16) are arranged on the left and right parts of the lower end surface of the movable pressing plate (15), and springs (18) are arranged on the outer sleeves of the guide rods (16), and the lower ends of the springs (18) are pressed on the upper end surface of the top plate (2).

4. The automatic lubricating grease filling device according to claim 1, characterized in that: The left and right parts of the top plate (2) are each provided with two groups of first holes (20), each group of first holes (20) is sleeved outside a corresponding group of rotating shafts (11) on the same side, and the lower end of the piston rod (21) is fixed to the middle of the piston (22), and a sealing surface layer (23) is provided on the outer side of the piston (22), and the sealing surface layer (23) is made of silicone rubber.

5. The automatic lubricating grease filling device according to claim 1, characterized in that: An upper fixing plate (32) is arranged at the top of the filling cylinder (3), and the piston rod (21) is arranged through the center of the upper fixing plate (32), and a limit block (34) is arranged at the lower part of the inner wall of the filling cylinder (3), and an oil outlet pipe (36) is arranged at the middle part of the lower end of the filling cylinder (3), and a lower joint (37) is arranged at the lower end of the oil outlet pipe (36).

6. The automatic lubricating grease filling device according to claim 1, characterized in that: The inner side surface of the filling cylinder (3) is provided with a stainless steel inner surface layer (30), the upper portion of the filling cylinder (3) is covered with an upper cover (31), and the upper left and right portions of the upper side of the upper cover (31) are provided with two groups of second holes (33), and each group of second holes (33) is sleeved outside the corresponding rotating shaft (11) on the same side.

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