Bearing grease injection head

Abstract

The utility model relates to the technical field of grease injection heads, in particular to a bearing grease injection head which comprises a bearing body, a grease injection pipe is connected to the bearing body, a pressing sleeve is connected to the grease injection pipe in an inserted mode, a clamping assembly is arranged in the pressing sleeve, a sealing plate is arranged at the top of the pressing sleeve, a guide cylinder is connected to the sealing plate, and the guide cylinder is connected to the bearing body. A fixing disc is welded to the top of the guide cylinder, a grease injection rod is inserted into the fixing disc, one end of the grease injection rod extends out of the fixing disc, and the other end of the grease injection rod is matched with the clamping assembly in an inserted mode. The bearing grease injection head provided by the utility model can inject grease into a bearing in installation and use, and is convenient to operate; the clamping head is matched with the annular cavity in a clamping mode, the top of the grease injection pipe is sealed through the sealing ring, the sealing performance in the grease injection process is greatly improved, meanwhile, injected grease is prevented from overflowing, and the grease injection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of grease injection heads, in particular to a bearing grease injection head. Background Art

[0002] Bearings are an important component in modern mechanical equipment, generally consisting of an outer ring, an inner ring, rollers and a cage. During the bearing assembly process, grease needs to be injected into the groove between the outer ring and the inner ring, that is, into the gap between two adjacent rollers. Since the gap between two adjacent rollers is very small, the accuracy of the grease injection device must be high enough to ensure sufficient and uniform grease injection, as well as accurate and fast grease injection.

[0003] The utility model patent with patent publication number CN217635008U discloses a uniform grease injection head for tapered bearing rollers, including an oil storage cap, a top of the oil storage cap is provided with an injection port, an oil receiving pan is fixedly connected to the bottom of the oil storage cap, a cavity is formed between the oil storage cap and the oil receiving pan, and the oil receiving pan is provided with a plurality of oil channel holes connected to the cavity. The utility model can temporarily store the lubricating oil entering from the oil pump through the cavity formed by the oil storage cap and the oil receiving pan, and then guide the lubricating oil through the oil channel holes to enter the oil injection gap of the tapered bearing rollers.

[0004] However, when this structure is actually used, it can only grease bearings that have not been installed. Some existing bearings will lack oil after installation and use, so oil injection holes will be opened on the bearings for subsequent grease injection. When this structure is greased, the bearing cover plate has been installed, making it inconvenient to inject grease. Therefore, a bearing grease injection head is proposed, which can be used to inject grease into bearings with grease injection holes during installation and use. Utility Model Content

[0005] In view of the above-mentioned defects, the purpose of the utility model is to provide a bearing grease injection head, which can be used to inject grease into bearings during installation and use, and is easy to operate; the sealing performance is greatly enhanced during the grease injection process, while grease overflow is avoided, thereby improving the grease injection efficiency.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a bearing grease injection head, including a bearing body, a grease injection tube is connected to the bearing body, the grease injection tube is plugged with a press sleeve, a clamping assembly is arranged in the press sleeve, a sealing plate is arranged on the top of the press sleeve, a guide cylinder is connected to the sealing plate, a fixed disk is welded on the top of the guide cylinder, a grease injection rod is plugged in the fixed disk, one end of the grease injection rod protrudes out of the fixed disk and the other end is plugged with the clamping assembly.

[0007] As a preferred technical solution, the clamping assembly includes a plurality of clamping blocks, and the plurality of clamping blocks are arranged at equal angles in the circumferential direction.

[0008] As a preferred technical solution, the clamping block is an integrally formed structure.

[0009] As a preferred technical solution, a clamping block groove is provided at the middle position of the outer side of each clamping block, the upper part of the clamping block groove is a connecting head, and the lower part of the clamping block groove is a clamping head;

[0010] The inner side of the connector is provided with an inclined surface, and the inclined surfaces of the connectors of the multiple clamping blocks are arranged in a ring shape to form a tapered groove.

[0011] As a preferred technical solution, the other end of the grease injection rod is a conical head, and the conical head of the grease injection rod is inserted into the conical groove.

[0012] As a preferred technical solution, the pressing sleeve includes a pressing plate and a sleeve, and a spring is horizontally connected to the outer side of the connecting head, and the spring is also connected to the sleeve.

[0013] As a preferred technical solution, the sleeve is connected above the pressure plate, and the top ends of the various clamping blocks are arranged in a ring shape and connected to the inner wall of the sleeve.

[0014] As a preferred technical solution, a sealing ring is provided at the bottom of the pressing plate.

[0015] As a preferred technical solution, an annular cavity is provided in the grease injection tube, a grease injection hole is provided at the bottom end of the annular cavity, and the grease injection hole is communicated with the bearing body.

[0016] As a preferred technical solution, a thread groove is provided on the top of the outer wall of the grease injection tube, and a sealing cap is sleeved on the thread groove.

[0017] The utility model provides a bearing grease injection head, which can inject grease into the bearing being installed and used, and the operation is convenient; the clamping head is engaged with the annular cavity, and the top of the grease injection tube is sealed by a sealing ring, so that the sealing performance during the grease injection process is greatly enhanced, and at the same time, the grease overflow is avoided, thereby improving the grease injection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the connection structure between the grease injection head and the bearing of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the grease injection head of the utility model;

[0020] Figure 3 This is a schematic diagram of the matching structure of the grease injection rod and the clamping assembly of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the clamping block of the utility model;

[0022] Figure 5 It is a structural schematic diagram of the compression sleeve of the utility model;

[0023] Figure 6 It is a schematic diagram of the cross-sectional structure of the grease injection tube of the utility model.

[0024] 1-bearing body, 2-grease injection tube, 3-pressing sleeve, 301-pressure plate, 302-sleeve, 4-sealing plate, 5-guide cylinder, 6-fixing plate, 7-grease injection rod, 8-sealing cap, 9-clamping assembly, 901-spring, 902-connector, 903-clamp, 10-annular cavity, 11-grease injection hole. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in combination with the embodiments below. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0026] See also Figures 1 to 3 The utility model provides a bearing grease injection head, including a bearing body 1, a grease injection tube 2 is connected to the bearing body 1, a press sleeve 3 is inserted into the grease injection tube 2, a clamping assembly 9 is arranged in the press sleeve 3, a sealing plate 4 is arranged on the top of the press sleeve 3, a guide cylinder 5 is connected to the sealing plate 4, a fixed disk 6 is welded on the top of the guide cylinder 5, a grease injection rod 7 is inserted in the fixed disk 6, one end of the grease injection rod 7 protrudes out of the fixed disk 6 and the other end is plugged and matched with the clamping assembly 9.

[0027] The above-mentioned components are preferably connected by welding.

[0028] See also Figure 1 and Figure 6 The grease injection tube 2 has an annular cavity 10, and a grease injection hole 11 is provided at the bottom end of the annular cavity 10, and the grease injection hole 11 is connected to the bearing body 1. The top of the outer wall of the grease injection tube 2 is provided with a thread groove, and a sealing cap 8 is sleeved on the thread groove.

[0029] See also Figure 5 The pressing sleeve 3 includes a pressing plate 301 and a sleeve 302 . A through hole is opened at the center of the pressing plate 301 , and a sealing ring is pasted on the bottom of the pressing plate 301 .

[0030] The sleeve 302 is connected above the pressing plate 301 , and the top ends of the clamping blocks are arranged in a ring shape and connected to the inner wall of the sleeve 302 .

[0031] When the pressure plate 301 is pressed onto the grease injection tube 2, the sealing ring at the bottom is deformed by the pressure, so that the grease injection tube 2 can be sealed during the grease injection process. The setting of the sleeve 302 can not only install the clamping assembly 9, but also allow the clamping assembly 9 to have room for movement when the grease injection rod 7 is inserted into the grease injection.

[0032] See also Figure 3 and Figure 4 The clamping assembly 9 includes a plurality of integrally formed clamping blocks, and the plurality of clamping blocks are arranged at equal angles in the circumferential direction.

[0033] In order to reduce the weight of the clamping block, a clamping block groove can be provided at the middle position of the outer side of each clamping block, and the upper side of the clamping block groove is a connector 902, and the lower side of the clamping block groove is a clamping head 903. The inner side of the connector 902 is provided with an inclined surface, and the inclined surfaces of the connectors 902 of multiple clamping blocks are arranged in a ring to form a conical groove. The other end of the grease injection rod 7 is a conical head, and the conical head of the grease injection rod 7 is inserted in the conical groove. The outer side of the connector 902 is connected to a spring 901 in the horizontal direction, and the spring 901 is also connected to the sleeve 302.

[0034] The conical head of the grease injection rod 7 is inserted between each connecting head 902. When grease is injected, pressure is generated on the inclined surface, which compresses each spring 901. The connecting head 902 and the clamping head 903 are synchronously supported outward, so that the clamping head 903 can be clamped in the annular cavity 10. During the grease injection process, the grease injection head is connected and cooperated with the bearing, and the sealing ring is used to seal the connection to avoid grease overflow, thereby improving the efficiency of grease injection.

[0035] By unscrewing the sealing cap 8 sleeved on the grease injection tube 2 connected to the bearing body 1, and then inserting each clamp head 903 into the annular cavity 10, by pushing the grease injection rod 7, the connecting head 902 is expanded outward due to the pressure, each spring 901 is compressed, and each clamp head 903 is engaged with the top of the annular cavity 10, and the sealing ring at the bottom of the pressure plate 301 seals the top of the grease injection tube 2. During the insertion of the grease injection rod 7, the end of the grease injection rod 7 is connected and engaged with the grease injection hole 11, and grease is injected through the grease injection equipment, so that the grease enters the grease injection hole 11 from the grease injection rod 7, and is thus injected into the bearing body 1. After the grease injection is completed, the grease injection rod 7 is lifted up to pull the entire grease injection head out of the grease injection tube 2. The operation is convenient, and the grease injection tube 2 can be sealed by screwing on the sealing cap 8.

[0036] It should be noted that the grease injection rod 7 and the fixed plate 6 are both installed on the grease injection device, the grease injection rod 7 is connected to the grease injection end of the grease injection device, and the fixed plate 6 is connected to the housing of the grease injection device.

[0037] The utility model provides a bearing grease injection head, which is clamped and matched with the grease injection tube through the clamping head, and during the clamping process, the sealing ring can seal the grease injection tube, thereby preventing grease from overflowing during the grease injection process and improving the grease injection efficiency; through the arrangement of the grease injection rod, the fixing plate, and the clamping assembly, during the grease injection process, the clamping assembly can be automatically connected and matched with the grease injection tube, thereby improving the sealing and firmness of the connection of the grease injection tube, thereby facilitating grease injection, and the entire grease injection process is simple to operate. After the grease injection is completed, the grease injection rod can be pulled out to automatically separate the grease injection head from the bearing, thereby improving the convenience of use.

[0038] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field can make various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A bearing grease injection head, comprising a bearing body (1), characterized in that: The bearing body (1) is connected to a grease injection tube (2), a pressing sleeve (3) is inserted into the grease injection tube (2), a clamping assembly (9) is arranged inside the pressing sleeve (3), a sealing plate (4) is arranged on the top of the pressing sleeve (3), a guide cylinder (5) is connected to the sealing plate (4), a fixed plate (6) is welded on the top of the guide cylinder (5), a grease injection rod (7) is inserted into the fixed plate (6), one end of the grease injection rod (7) protrudes out of the fixed plate (6) and the other end is plugged into and matched with the clamping assembly (9).

2. A bearing grease injection head according to claim 1, characterized in that: The clamping assembly (9) comprises a plurality of clamping blocks, and the plurality of clamping blocks are arranged at equal angles in the circumferential direction.

3. A bearing grease injection head according to claim 2, characterized in that: The clamping block is an integrally formed structure.

4. A bearing grease injection head according to claim 2, characterized in that: A clamping block groove is provided at the middle position of the outer side of each clamping block, a connecting head (902) is located above the clamping block groove, and a clamping head (903) is located below the clamping block groove; The inner side of the connecting head (902) is provided with an inclined surface, and the inclined surfaces of the connecting heads (902) of the multiple clamping blocks are arranged in a ring shape to form a tapered groove.

5. A bearing grease injection head according to claim 4, characterized in that: The other end of the grease injection rod (7) is a conical head, and the conical head of the grease injection rod (7) is inserted into the conical groove.

6. A bearing grease injection head according to claim 4, characterized in that: The pressing sleeve (3) comprises a pressing plate (301) and a sleeve (302); a spring (901) is connected to the outer side of the connecting head (902) in a horizontal direction; and the spring (901) is also connected to the sleeve (302).

7. A bearing grease injection head according to claim 6, characterized in that: The sleeve (302) is connected above the pressing plate (301), and the top ends of the various clamping blocks are arranged in a ring shape and connected to the inner wall of the sleeve (302).

8. A bearing grease injection head according to claim 6, characterized in that: A sealing ring is provided at the bottom of the pressing plate (301).

9. A bearing grease injection head according to claim 1, characterized in that: An annular cavity (10) is provided in the grease injection tube (2), a grease injection hole (11) is provided at the bottom end of the annular cavity (10), and the grease injection hole (11) is communicated with the bearing body (1).

10. A bearing grease injection head according to claim 1, characterized in that: The top of the outer wall of the grease injection tube (2) is provided with a thread groove, and a sealing cap (8) is sleeved on the thread groove.

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