Grease adding trolley for bearing

Abstract

The grease adding trolley comprises a trolley body, an oil barrel arranged on the trolley body and two pressing air cylinders, the two pressing air cylinders are symmetrically arranged on the trolley body with the oil barrel as the center, telescopic shafts of the two pressing air cylinders face upwards and are connected with an air cylinder support, an oil pump is arranged on the air cylinder support, and the oil pump is connected with the oil barrel. An oil pumping pipe is arranged on the oil pump and extends downwards into the oil drum, a gland is arranged at the lower end of the oil pumping pipe, the middle of the gland arches upwards to form a frustum cavity, the lower end of the oil pumping pipe extends into the frustum cavity, and the bottom of the oil pumping pipe is of a closed structure. A plurality of oil injection holes are formed in the side wall of the oil pumping pipe and located in the frustum cavity. According to the utility model, the grease in the grease barrel can be completely pressed into the oil pumping pipe while the stable injection of the grease is ensured.

Description

Technical Field

[0001] The utility model relates to the field of grease injection, in particular to a grease filling trolley for bearings. Background Art

[0002] During the processing of the bearing, it is necessary to inject grease into it. At present, a grease injection machine is used for grease injection. For example, in the utility model patent with the authorization announcement date of 2022.02.11 and the authorization announcement number of CN215807815U, a roller bearing grease injection machine is disclosed, including a base, a fixed plate and an oil valve, a push-pull handrail, two electric telescopic rods, a crossbeam, two fixed columns, an extrusion column, an extrusion cover, an oil pump, and an oil extraction pipe. The oil extraction pipe runs through the extrusion cover and extends a little bit. During operation, the entire device is pulled to the grease injection point by pushing and pulling the handrail, and the two electric telescopic rods are started to drive the extrusion cover into the grease barrel. The two extrusion columns are retracted into the two fixed columns under the action of force. After the spring is deformed in place, the two electric telescopic rods stop working, the oil valve is opened, the oil pump is started, and the butter in the grease barrel is injected into the roller bearing along the oil extraction pipe. During the injection process, as the butter in the grease barrel gradually decreases, the extrusion cover slowly descends under the action of the spring, and the butter in the grease barrel continues to be squeezed to avoid the situation where the butter with high viscosity in the grease barrel is not easy to flow and a vacuum occurs, so as to ensure the stable injection of grease.

[0003] However, in actual operation, since the oil extraction pipe passes through the extrusion cover and extends out a little bit, as the extrusion cover is continuously pressed down, some grease will remain in the dead corner formed by the oil extraction pipe and the extrusion cover, and the grease in the grease barrel cannot be completely extracted. Over time, the grease in the dead corner will deteriorate, and then affect the new grease poured into the grease barrel. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings, the purpose of the utility model is to provide a grease-adding trolley for bearings which can ensure stable grease injection and completely press the grease in the grease barrel into the oil extraction pipe.

[0005] In order to achieve the above purpose, one of the technical solutions adopted by the utility model is: a grease-adding trolley for bearings, comprising a trolley, an oil barrel arranged on the trolley and two clamping cylinders, the two clamping cylinders are symmetrically arranged on the trolley with the oil barrel as the center, the telescopic axes of the two clamping cylinders are upward and are connected with cylinder brackets, an oil pump is arranged on the cylinder bracket, an oil extraction pipe is arranged on the oil pump, the oil extraction pipe extends downward into the oil barrel, a pressure cover is arranged at the lower end of the oil extraction pipe, the middle part of the pressure cover is arched upward to form a frustum cavity, the lower end of the oil extraction pipe extends into the frustum cavity, the bottom of the oil extraction pipe is a closed structure, a plurality of oil injection holes are arranged on the side wall of the oil extraction pipe, and the plurality of oil injection holes are located in the frustum cavity.

[0006] The utility model has the beneficial effect of using a grease-adding trolley for bearings as follows: the oil filling holes at the bottom of the existing oil extraction pipe are changed to the side walls of the oil extraction pipe and are distributed in a conical cavity that arches upward in the middle of the gland; when the gland moves downward with the clamping cylinder, grease will be continuously introduced into the conical cavity; the grease is pumped into the oil extraction pipeline through the joint action of the oil pump and the gland, thereby reducing the grease residue in the existing dead corners, ensuring that the grease in the oil barrel is completely pressed into the oil extraction pipe, and reducing the number of times the gland is cleaned; similar to the prior art, the oil pump and the gland can prevent the grease from being difficult to flow due to its high viscosity through their action, thereby ensuring stable injection of the grease.

[0007] Preferably, the gland includes a cone sleeve and a plurality of gland rings, the plurality of gland rings are stacked from top to bottom, and the outer diameter and inner diameter of the plurality of gland rings are continuously increased from top to bottom, the bottom outer ring of the cone sleeve is locked and fixed with the inner diameter side of the top gland ring, and the outer diameter side of the upper gland ring is locked and fixed with the inner diameter side of the lower gland ring. The outer diameter side of the upper gland ring is locked and fixed with the inner diameter side of the lower gland ring to form a multi-stage oil storage cavity, and its outer diameter becomes smaller from bottom to top, which is conducive to completely draining grease into the cone cavity; the plurality of gland rings and the gland rings and the cone sleeve are detachably connected to facilitate cleaning of the gland.

[0008] Preferably, the frustum sleeve comprises:

[0009] A sleeve body, wherein the lower end of the sleeve body is in a frustum shape, and the outer ring of the lower end of the sleeve body is provided with a circle of mounting flanges, and the mounting flanges are locked and fixed with the inner diameter side of the uppermost gland ring, and the upper end of the sleeve body is provided with a snap ring, and the snap ring has a notch, and the snap ring is sleeved on the lower end of the oil pumping pipe;

[0010] A locking block, wherein the shape of the locking block matches that of the notch, and the inner diameter formed by the locking block and the clamping ring matches the outer diameter of the oil pumping pipe;

[0011] The locking block and the clamping ring are locked and fixed by bolts.

[0012] The locking block and the clamping ring are matched to each other so that the cone sleeve can be conveniently installed on the oil pumping pipe.

[0013] Preferably, a sealing structure is provided between the outer wall of the gland and the inner wall of the oil barrel, so as to ensure a certain pressure under the gland to avoid pressure release, which would result in the inability to completely inject grease into the oil extraction pipe.

[0014] Preferably, the sealing structure is a rubber ring, and an installation groove for installing the rubber ring is provided on the outer side wall of the gland.

[0015] Preferably, a hand-operated switch valve is provided on the cylinder bracket, and the hand-operated switch valve is connected to the oil pump through a pipeline to start and shut down the oil pump.

[0016] Preferably, a pressure regulating valve is provided on the pipeline, and the pressure regulating valve is fixed on the cylinder bracket to adjust the pressure in the pipeline.

[0017] Preferably, a metering valve is provided on the pipeline, and different amounts of grease can be adjusted for different bearings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the first angle of this embodiment;

[0019] Figure 2 is a three-dimensional diagram from a second angle of this embodiment;

[0020] Figure 3 A three-dimensional diagram of the oil pump, the oil pumping pipe and the gland in the embodiment of the present invention at a first angle;

[0021] Figure 4 A second-angle stereoscopic view of the oil pump, the oil pumping pipe, and the gland of this embodiment;

[0022] Figure 5 This is a front view of the oil pump, oil pumping pipe and gland assembly of this embodiment;

[0023] Figure 6 for Figure 5 Sectional view at AA in the middle;

[0024] Figure 7 for Figure 6 A partial enlarged view of point B in the middle.

[0025] In the figure:

[0026] 1. Trolley; 2. Oil drum; 3. Clamping cylinder; 4. Cylinder bracket; 5. Oil pump; 6. Oil extraction pipe; 7. Gland; 8. Cone cavity; 9. Oil filling hole; 10. Cone sleeve; 10a. Sleeve body; 10b. Mounting flange; 10c. Snap ring; 10d. Locking block; 11. Gland ring; 12. Hand-turned switch valve; 13. Pressure regulating valve. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0028] See also Figure 1As shown, the present embodiment discloses a grease trolley for bearings, comprising a trolley 1, an oil barrel 2 and two pressing cylinders 3 arranged on the trolley 1. The two pressing cylinders 3 are symmetrically arranged on the trolley 1 with the oil barrel 2 as the center. The telescopic axes of the two pressing cylinders 3 face upward and are connected to a cylinder bracket 4. An oil pump 5 is arranged on the cylinder bracket 4. An oil extraction pipe 6 is arranged on the oil pump 5. The oil extraction pipe 6 extends downward into the oil barrel 2. A pressure cover 7 is arranged at the lower end of the oil extraction pipe 6. The characteristic is that the middle part of the pressure cover 7 is arched upward to form a frustum cavity 8. The lower end of the oil extraction pipe 6 extends into the frustum cavity 8. The bottom of the oil extraction pipe 6 is a closed structure. A plurality of oil injection holes 9 are arranged on the side wall of the oil extraction pipe 6. The plurality of oil injection holes 9 are located in the frustum cavity 8.

[0029] like Figure 3-Figure 7 As shown, the gland 7 includes a frustum sleeve 10 and a plurality of gland rings 11. The plurality of gland rings 11 are stacked from top to bottom, and the outer diameters and inner diameters of the plurality of gland rings 11 are continuously increased from top to bottom. The bottom outer ring of the frustum sleeve 10 is locked and fixed with the inner diameter side of the top gland ring 11, and the outer diameter side of the upper gland ring 11 is locked and fixed with the inner diameter side of the lower gland ring 11.

[0030] Wherein, the cone sleeve 10 comprises:

[0031] The sleeve 10a has a frustum-shaped lower end. The outer ring of the lower end of the sleeve 10a is provided with a circle of mounting flange 10b. The mounting flange 10b is locked and fixed with the inner diameter side of the uppermost gland ring 11. The upper end of the sleeve 10a has a snap ring 10c. The snap ring 10c has a notch. The snap ring 10c is sleeved on the lower end of the oil pumping pipe 6.

[0032] The locking block 10d matches the shape of the notch, and the inner diameter formed by the locking block 10d and the clamping ring 10c matches the outer diameter of the oil pumping pipe 6;

[0033] The locking block 10d and the clamping ring 10c are fixed by bolts.

[0034] A sealing structure is provided between the outer wall of the gland 7 and the inner wall of the oil barrel 2 . The sealing structure in this embodiment is a rubber ring. A mounting groove for mounting the rubber ring is provided on the outer wall of the gland 7 .

[0035] In addition, if Figure 1 , Figure 2 As shown, a manual switch valve 12 is arranged on the cylinder bracket 4, and the manual switch valve 12 is connected to the oil pump 5 through a pipeline. A pressure regulating valve 13 is arranged on the pipeline, and the pressure regulating valve 13 is fixed on the cylinder bracket 4. A quantitative valve is arranged on the pipeline.

[0036] The working principle of this embodiment:

[0037] After the cart 1 is pushed to the oil filling station, the hand-operated switch valve 12 is started, the pressure regulating valve 13 is pre-adjusted, the clamping cylinder 3 is started, and the cylinder bracket 4 is driven to move downward, and the oil pump 5 on the cylinder bracket 4 and the oil extraction pipe 6 at the bottom are moved downward accordingly. With the combined effect of the oil pump 5 and the continued downward movement of the gland 7, the grease is pumped out from the oil extraction pipe 6 and leads to the grease processing position of the bearing through the connecting pipe connected to the oil extraction pipe 6. When the gland 7 needs to be cleaned, the locking block 10d and the gland ring 11 can be disassembled, and then installed after cleaning.

[0038] The above implementation modes are only for illustrating the technical concept and features of the utility model, and their purpose is to allow people familiar with this technology to understand the content of the utility model and implement it. It cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A grease trolley for bearings, comprising a trolley (1), an oil barrel (2) and two pressing cylinders (3) arranged on the trolley (1), wherein the two pressing cylinders (3) are symmetrically arranged on the trolley (1) with the oil barrel (2) as the center, the telescopic axes of the two pressing cylinders (3) are upward and connected to a cylinder bracket (4), an oil pump (5) is arranged on the cylinder bracket (4), an oil pump (5) is arranged on the oil pump (5), the oil pump (6) is extended downward into the oil barrel (2), and a pressure cover (7) is arranged at the lower end of the oil pump (6), characterized in that: The middle part of the pressure cover (7) is arched upward to form a conical cavity (8), the lower end of the oil extraction pipe (6) extends into the conical cavity (8), the bottom of the oil extraction pipe (6) is a closed structure, and a plurality of oil injection holes (9) are arranged on the side wall of the oil extraction pipe (6), and the plurality of oil injection holes (9) are located in the conical cavity (8).

2. The grease adding trolley according to claim 1, characterized in that: The pressure cover (7) includes a conical sleeve (10) and a plurality of pressure cover rings (11). The plurality of pressure cover rings (11) are stacked from top to bottom, and the outer diameters and inner diameters of the plurality of pressure cover rings (11) are continuously increased from top to bottom. The bottom outer ring of the conical sleeve (10) is locked and fixed with the inner diameter side of the top pressure cover ring (11), and the outer diameter side of the upper pressure cover ring (11) is locked and fixed with the inner diameter side of the lower pressure cover ring (11).

3. The grease adding trolley according to claim 2, characterized in that: The frustum sleeve (10) comprises: A sleeve (10a), wherein the lower end of the sleeve (10a) is in a frustoconical shape, and the outer ring of the lower end of the sleeve (10a) is provided with a circle of mounting flange (10b), and the mounting flange (10b) is locked and fixed with the inner diameter side of the uppermost gland ring (11), and the upper end of the sleeve (10a) is provided with a snap ring (10c), and the snap ring (10c) has a notch, and the snap ring (10c) is sleeved on the lower end of the oil pumping pipe (6); A locking block (10d), wherein the locking block (10d) matches the shape of the notch, and the inner diameter formed by the locking block (10d) and the clamping ring (10c) matches the outer diameter of the oil pumping pipe (6); The locking block (10d) and the clamping ring (10c) are locked and fixed by bolts.

4. The grease adding trolley according to claim 1, characterized in that: A sealing structure is provided between the outer wall of the gland (7) and the inner wall of the oil barrel (2).

5. The grease adding trolley according to claim 4, characterized in that: The sealing structure is a rubber ring, and an installation groove for installing the rubber ring is provided on the outer side wall of the gland (7).

6. The grease adding trolley according to claim 1, characterized in that: A hand-operated switch valve (12) is provided on the cylinder support (4), and the hand-operated switch valve (12) is connected to the oil pump (5) through a pipeline.

7. The grease adding trolley according to claim 6, characterized in that: The pipeline is provided with a pressure regulating valve (13), and the pressure regulating valve (13) is fixed on the cylinder bracket (4).

8. The grease adding trolley according to claim 6, characterized in that: A quantitative valve is arranged on the pipeline.

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