Double-end grease injection device for rolling bearing

Abstract

The utility model provides a rolling bearing double-end grease injection device which comprises a device body, an operation platform is arranged on the device body, a bearing fixing plate is arranged on the operation platform and used for fixing and keeping a rolling bearing in a vertical state, and the two sides of the bearing fixing plate are each provided with a grease injection head. The end face of the side, facing the bearing fixing plate, of the grease injection head is provided with a plurality of oil nozzles distributed in a circumferential array mode, and the number of the oil nozzles is equal to the number of intervals between every two adjacent rolling bodies in the rolling bearing. Each grease injection head is provided with a grease injection position making contact with the end face of the corresponding rolling bearing and a bearing taking and placing position disengaging from the end face of the corresponding rolling bearing, and the grease injection heads can be driven to be switched between the grease injection positions and the bearing taking and placing positions. And each oil nozzle on the grease injection head is embedded into a gap between a retainer of the rolling bearing and a bearing ring. The grease homogenizing device can save consumed grease homogenizing time and improve the production efficiency of bearings.

Description

Technical Field

[0001] The utility model belongs to the technical field of bearing grease injection equipment design, and in particular relates to a double-head grease injection device for a rolling bearing. Background Art

[0002] When rolling bearings are in operation, there is lubricating oil or grease inside to reduce the friction and wear between the bearing rings and rolling elements at high speeds, reduce bearing heat, and increase the service life of the bearings. During the assembly process of rolling grease lubricated bearings, each bearing needs to be quantitatively greased. For the bearing grease injection process, most manufacturers currently perform a single grease injection. The amount of grease injected into the bearing in a single grease injection usually has errors and requires repeated load-bearing measurements. In addition, the grease is not injected in the center of the bearing raceway, and the bearing grease uniformity process takes more time, affecting the production efficiency of the bearing. Utility Model Content

[0003] Therefore, the utility model provides a double-head grease injection device for rolling bearings, which can solve the technical problems in the prior art that rolling grease lubricated bearings adopt a single grease injection method during the grease injection process, the grease injection amount usually has errors, repeated load-bearing measurements are required, and the grease is not injected in the center of the bearing raceway. The bearing greasing process takes more time, which affects the production efficiency of the bearing.

[0004] In order to solve the above problems, the utility model provides a double-head grease injection device for rolling bearings, including a device body, the device body having an operating platform, the operating platform being provided with a bearing fixing plate, the bearing fixing plate being used to fix the rolling bearing in an upright state, a grease injection head being respectively provided on both sides of the bearing fixing plate, the grease injection head having a plurality of oil nozzles arranged in a circumferential array on an end face on one side facing the bearing fixing plate, the number of the oil nozzles being equal to the number of intervals between two adjacent rolling elements in the rolling bearing, and each of the grease injection heads having a grease injection position in contact with the end face of the rolling bearing and a bearing pick-up and place position out of contact with the end face of the rolling bearing, the grease injection head being able to be driven to switch between the grease injection position and the bearing pick-up and place position, and when the grease injection head is in the grease injection position, each of the oil nozzles on the grease injection head is embedded in the gap between the retaining frame and the bearing ring of the rolling bearing.

[0005] In some embodiments, the double-head grease injection device for rolling bearings also includes two transverse driving components, which are respectively used to drive each of the grease injection heads to switch between the grease injection position and the bearing pick-up and placement position, and the transverse driving component includes a telescopic cylinder, and the grease injection head is assembled on the free end of the extension rod of the telescopic cylinder.

[0006] In some embodiments, the telescopic cylinder is a hydraulic cylinder; and / or the grease injection head is detachably assembled on the free end of the extension rod.

[0007] In some embodiments, a disc-shaped bracket is assembled on the free end of the extension rod, and the grease injection head is detachably connected to the disc-shaped bracket.

[0008] In some embodiments, a pedestal is provided on the operating platform, and the bearing fixing plate is detachably assembled on the pedestal.

[0009] In some embodiments, a recessed groove is provided on the top surface of the pedestal, and the bottom end of the bearing fixing plate is inserted into the recessed groove. A fastener is also provided on the pedestal, and the fastener is used to fix the bearing fixing plate in the recessed groove.

[0010] In some embodiments, a circular arc groove is formed on the top end surface of the bearing fixing plate, the curvature radius of the circular arc groove is the same as the curvature radius of the outer ring of the fixed rolling bearing, and shock-absorbing pads are respectively provided at both ends of the circular arc groove.

[0011] In some embodiments, the rolling bearing double-head grease injection device also includes a pressure fluid pumping device, and a telescopic cylinder forward control button and a telescopic cylinder backward control button are provided on the operating platform. The pressure fluid pumping device is configured to: when the telescopic cylinder forward control button is pressed, it operates to extend the extension rod of the telescopic cylinder to the grease injection position; when the telescopic cylinder backward control button is pressed, it operates to retract the extension rod of the telescopic cylinder to the bearing picking and placing position.

[0012] In some embodiments, the top end surface of the bearing fixing plate and one side of the circular arc groove have an upwardly extending protrusion, and a sensing component is provided on the protrusion, and the sensing head of the sensing component is used to detect whether the rolling bearing is placed in the circular arc groove; a box body is formed in the main body of the device, and a lubricating grease storage barrel is placed in the box body, and the lubricating grease storage barrel is controllably connected with each of the grease injection heads via a grease pumping component, and the grease pumping component is configured to: when the sensing component senses the rolling bearing, delay operation for a first time period, and stop operation after it has run for a second time period; and the pressure fluid pumping device is also configured to: when the sensing component senses the rolling bearing, operate to extend the extension rod of the telescopic cylinder to the grease injection position, and when the grease pumping component stops operating, operate to retract the extension rod of the telescopic cylinder to the bearing pick-up and placement position.

[0013] The utility model provides a double-head grease injection device for a rolling bearing, which has the following beneficial effects: a grease injection head is respectively arranged on the left and right sides of a rolling bearing in an upright state, and a plurality of oil nozzles arranged in a circumferential array on the grease injection head correspond one by one to the interval positions of each rolling body to achieve uniform grease injection on both sides of the rolling bearing, and the grease is injected into the rolling center position, which saves time for uniform grease injection and improves the production efficiency of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. The drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of a double-head grease injection device for rolling bearings in one embodiment of the utility model;

[0016] Figure 2 yes Figure 1 A partial enlarged view of the middle A;

[0017] Figure 3 yes Figure 1 A top view of

[0018] Figure 4 yes Figure 3 A partial enlarged view of point B in the middle;

[0019] Figure 5 yes Figure 1 Front view of .

[0020] The accompanying drawings are marked as follows:

[0021] 1. Device body; 11. Operating platform; 12. Base; 121. Fastener; 13. Telescopic cylinder forward control button; 14. Telescopic cylinder backward control button; 21. Bearing fixing plate; 22. Shock-absorbing pad; 23. Sensing component; 3. Grease injection head; 31. Oil nozzle; 41. Telescopic cylinder; 42. Disc bracket; 5. Lubricating grease storage barrel; 51. Oil pipe; 6. Grease pumping component; 100. Rolling bearing. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0024] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0025] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0026] See also Figures 1 to 5As shown, according to an embodiment of the utility model, a rolling bearing double-head grease injection device (double-head, i.e., two grease injection heads) is provided, comprising a device body 1, the device body 1 having an operating platform 11, the operating platform 11 having a bearing fixing plate 21, the bearing fixing plate 21 being used to fix the rolling bearing 100 in an upright state, the aforementioned upright state means that the central axis of the rolling bearing 100 is parallel to the plane of the operating platform 11, a grease injection head 3 is respectively provided on both sides of the bearing fixing plate 21, the grease injection head 3 having a plurality of oil nozzles 31 arranged in a circumferential array on one end face facing the bearing fixing plate 21, the number of the oil nozzles 31 being proportional to the interval between two adjacent rolling elements in the rolling bearing 100 The number of grease heads 3 is equal, and each grease head 3 has a grease injection position in contact with the end face of the rolling bearing 100 and a bearing pick-up and placement position out of contact with the end face of the rolling bearing 100. The grease head 3 can be driven to switch between the grease injection position and the bearing pick-up and placement position, and when the grease head 3 is in the grease injection position, each oil nozzle 31 on the grease head 3 is embedded in the gap between the retaining frame and the bearing ring of the rolling bearing 100. It should be noted that, according to the raceway design of different rolling bearings 100, the layout diameter of each oil nozzle 31 on the grease head 3 can be matched with the specific gap size of the bearing (for example, it can be the gap between the retaining frame and the outer ring of the bearing or the gap between the retaining frame and the inner ring of the bearing).

[0027] In this technical solution, a grease injection head 3 is respectively arranged on the left and right sides of the rolling bearing 100 in an upright state, and a plurality of oil nozzles 31 arranged along a circumferential array on the grease injection head 3 are used to correspond one by one to the interval positions of each rolling body to achieve uniform grease injection on both sides of the rolling bearing 100, and the grease is injected into the rolling center position, which saves time for uniform grease injection and improves the production efficiency of the bearing.

[0028] In some embodiments, the double-head grease injection device for rolling bearings also includes two lateral driving components (not marked in the figure), which are respectively used to drive each of the grease injection heads 3 to switch between the grease injection position and the bearing pick-up and placement position, and the lateral driving component includes a telescopic cylinder 41, and the grease injection head 3 is assembled on the free end of the extending rod of the telescopic cylinder 41, so that the position adjustment of each grease injection head 3 is more precise, and the automated position adjustment can further improve the production efficiency of the bearing.

[0029] In a preferred embodiment, the telescopic cylinder 41 is a hydraulic cylinder, which has higher position adjustment accuracy than a pneumatic cylinder and lower cost than an electric push rod.

[0030] The grease injection head 3 is detachably assembled on the free end of the extension rod, so that different types of grease injection heads 3 can be replaced to achieve grease injection operations on rolling bearings 100 of different types.

[0031] In another preferred embodiment, a disc-shaped bracket 42 is assembled on the free end of the extension rod, and the grease head 3 is detachably connected to the disc-shaped bracket 42. Specifically, the detachable connection between the grease head 3 and the disc-shaped bracket 42 can be achieved by a plurality of screws evenly arranged along the circumferential direction. It should be noted that the disc-shaped bracket 42 can apply force to the grease head 3 more evenly and thus ensure that each oil nozzle 31 on the grease head 3 accurately enters the corresponding gap position.

[0032] In some embodiments, a pedestal 12 is provided on the operating platform 11, and the pedestal 12 is detachably connected to the operating platform 11 by bolts, and the bearing fixing plate 21 is detachably assembled on the pedestal 12, so that bearing fixing plates 21 with appropriate sizes can be used for rolling bearings 100 of different models and specifications, thereby improving the versatility of the double-head grease injection device.

[0033] In a specific embodiment, a recessed groove (not marked in the figure) is provided on the top surface of the pedestal 12, and the bottom end of the bearing fixing plate 21 is inserted into the recessed groove, and a fastener 121 is also provided on the pedestal 12, and the fastener 121 is used to fix the bearing fixing plate 21 in the recessed groove, and the fastener 121 can be a bolt. In this technical solution, the positioning connection between the recessed groove and the bottom end of the bearing fixing plate 21 is achieved by inserting and fitting, and the two are connected as a whole by the fastener 121, which has a simple structure and is easy to operate.

[0034] In some embodiments, a circular arc groove (not marked in the figure) is formed on the top end face of the bearing fixing plate 21, and the curvature radius of the circular arc groove is the same as the curvature radius of the outer ring of the fixed rolling bearing 100, and shock-absorbing pads 22 are respectively provided at both ends of the circular arc groove to prevent the grease injection heads 3 on both sides from making hard contact with the rolling bearing 100 when approaching the rolling bearing 100, thereby preventing damage to the rolling bearing 100.

[0035] In some embodiments, the rolling bearing double-head grease injection device also includes a pressure fluid pumping device (not shown in the figure). For example, when the aforementioned telescopic cylinder 41 is an oil cylinder, the aforementioned pressure fluid pumping device corresponds to a hydraulic pump. A telescopic cylinder forward control button 13 and a telescopic cylinder backward control button 14 are provided on the operating platform 11. The pressure fluid pumping device is configured as follows: when the telescopic cylinder forward control button 13 is pressed, it operates to extend the extension rod of the telescopic cylinder 41 to the grease injection position; when the telescopic cylinder backward control button 14 is pressed, it operates to retract the extension rod of the telescopic cylinder 41 to the bearing pick-up and placement position, thereby manually selecting and pressing the corresponding button to achieve control of the forward or backward movement of the telescopic cylinder 41. For example, when replacing grease injection heads 3 of different models, the operator presses the aforementioned telescopic cylinder backward control button 14 so that the grease injection heads 3 on both sides are in a position away from the rolling bearing 100, that is, the aforementioned bearing pick-up and placement position, so that the operator can replace the grease injection heads 3.

[0036] In some embodiments, the top end surface of the bearing fixing plate 21 and one side of the circular arc groove has an upwardly extending protrusion (not marked in the figure), and the protrusion is provided with a sensing component 23 (specifically, an infrared sensor can be used), and the sensing head of the sensing component 23 is used to detect whether the rolling bearing 100 is placed in the circular arc groove; a box body (not shown in the figure) is formed in the device body 1, and a lubricating grease storage barrel 5 is placed in the box body, and the lubricating grease storage barrel 5 is connected to each of the injection molding machines via a grease pumping component 6 and a corresponding oil pipe 51. The grease head 3 is controllably connected, and the grease pumping component 6 is configured to: when the sensing component 23 senses the rolling bearing 100, it runs for a first delay time (for example, 3 seconds), and stops running after running for a second delay time (for example, 2 seconds); and the pressure fluid pumping device is also configured to: when the sensing component 23 senses the rolling bearing 100, it runs to extend the extension rod of the telescopic cylinder 41 to the grease injection position, and when the grease pumping component 6 stops running, it runs to retract the extension rod of the telescopic cylinder 41 to the bearing pick-up and placement position.

[0037] In this technical solution, real-time detection of the rolling bearing 100 is achieved by setting a sensing component 23 on the bearing fixing plate 21, and the grease pumping component 6 and the pressure fluid pumping device are associated with the sensing component 23 in operation control. After the rolling bearing 100 is placed on the bearing fixing plate 21, the grease injection operation can be automatically performed, thereby further improving the grease injection efficiency and the bearing production efficiency.

[0038] It is easy for those skilled in the art to understand that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0039] The above is only a preferred embodiment of the utility model, and is not intended to limit the utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the utility model should be included in the protection scope of the utility model. The above is only a preferred implementation of the utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the utility model, and these improvements and variations should also be regarded as the protection scope of the utility model.

Claims

1. A double-head grease injection device for rolling bearings, characterized in that: The invention comprises a device body (1), wherein the device body (1) is provided with an operating platform (11), wherein the operating platform (11) is provided with a bearing fixing plate (21), wherein the bearing fixing plate (21) is used to fix and maintain a rolling bearing (100) in an upright state, wherein a grease injection head (3) is provided on both sides of the bearing fixing plate (21), wherein the grease injection head (3) has a plurality of oil nozzles (31) arranged in a circumferential array on an end surface of one side facing the bearing fixing plate (21), wherein the number of the oil nozzles (31) is equal to the number of the rolling bearing (100). The number of intervals between two adjacent rolling elements is equal, and each of the grease injection heads (3) has a grease injection position in contact with the end face of the rolling bearing (100) and a bearing pick-up and placement position out of contact with the end face of the rolling bearing (100). The grease injection head (3) can be driven to switch between the grease injection position and the bearing pick-up and placement position, and when the grease injection head (3) is in the grease injection position, each of the oil nozzles (31) on the grease injection head (3) is embedded in the gap between the retaining frame and the bearing ring of the rolling bearing (100).

2. The double-head grease injection device for rolling bearings according to claim 1, characterized in that: It also includes two transverse driving components, which are respectively used to drive each of the grease injection heads (3) to switch between the grease injection position and the bearing pick-up and placement position. The transverse driving component includes a telescopic cylinder (41), and the grease injection head (3) is assembled on the free end of the extension rod of the telescopic cylinder (41).

3. The double-head grease injection device for rolling bearings according to claim 2, characterized in that: The telescopic cylinder (41) is a hydraulic cylinder; and / or the grease injection head (3) is detachably assembled on the free end of the extension rod.

4. The rolling bearing double-head grease injection device according to claim 2, characterized in that: A disc-shaped bracket (42) is assembled on the free end of the extension rod, and the grease injection head (3) is detachably connected to the disc-shaped bracket (42).

5. The rolling bearing double-head grease injection device according to claim 1, characterized in that: A pedestal (12) is provided on the operating platform (11), and the bearing fixing plate (21) is detachably assembled on the pedestal (12).

6. The rolling bearing double-head grease injection device according to claim 5, characterized in that: A recessed groove is provided on the top surface of the pedestal (12), and the bottom end of the bearing fixing plate (21) is inserted into the recessed groove. A fixing piece (121) is also provided on the pedestal (12), and the fixing piece (121) is used to fix the bearing fixing plate (21) in the recessed groove.

7. The rolling bearing double-head grease injection device according to claim 2, characterized in that: A circular arc groove is formed on the top end surface of the bearing fixing plate (21), the curvature radius of the circular arc groove is the same as the curvature radius of the outer ring of the fixed rolling bearing (100), and shock absorbing pads (22) are respectively provided at both ends of the circular arc groove.

8. The rolling bearing double-head grease injection device according to claim 7, characterized in that: The pressure fluid pumping device also includes a pressure fluid pumping device. A telescopic cylinder forward control button (13) and a telescopic cylinder backward control button (14) are provided on the operating platform (11). The pressure fluid pumping device is configured to: when the telescopic cylinder forward control button (13) is pressed, the pressure fluid pumping device operates to extend the extension rod of the telescopic cylinder (41) to the grease injection position; when the telescopic cylinder backward control button (14) is pressed, the pressure fluid pumping device operates to retract the extension rod of the telescopic cylinder (41) to the bearing placement position.

9. The rolling bearing double-head grease injection device according to claim 8, characterized in that: The top end surface of the bearing fixing plate (21) and one side of the circular arc groove has a protruding portion extending upward, and a sensing component (23) is provided on the protruding portion. The sensing head of the sensing component (23) is used to detect whether the rolling bearing (100) is placed in the circular arc groove; a box body is formed in the device body (1), and a lubricating grease storage barrel (5) is arranged in the box body. The lubricating grease storage barrel (5) is controllably connected to each of the grease injection heads (3) via a grease pumping component (6), and the grease pumping component (6) is connected to the grease injection head (3). The component (6) is configured to: when the sensing component (23) senses the rolling bearing (100), delay operation for a first time period, and stop operation after running for a second time period; and the pressure fluid pumping device is also configured to: when the sensing component (23) senses the rolling bearing (100), operate to extend the extension rod of the telescopic cylinder (41) to the grease injection position, and when the grease pumping component (6) stops operating, operate to retract the extension rod of the telescopic cylinder (41) to the bearing placement position.

Images