阅读说明：本技术 一种驱动轴的注油装置 (Oiling device of drive shaft ) 是由 张蓓 于 2021-01-11 设计创作，主要内容包括：本发明涉及驱动轴生产技术领域,具体的说是一种驱动轴的注油装置,包括注油筒,所述注油筒内安插有内筒,所述内筒一端固定连接有筒套,所述筒套套设在注油筒上且筒套外表面加工有外螺纹,所述注油筒靠近筒套的一端外表面固定连接有限位环,所述限位环背离筒套的一侧设有内螺纹帽,所述内螺纹帽套设在注油筒上并与筒套螺纹连接,所述内筒外表面开设有沿内筒长度方向布置的加油口,所述内筒内滑动安装有活塞,所述活塞外表面固定有凸块,所述凸块延伸至加油口内并与加油口内壁相贴合,与现有技术相比,本发明具有如下有益效果：实现便捷添加黄油,避免黄油聚集在注油筒的筒口部位,减少资源浪费,提高黄油的添加效率。(The invention relates to the technical field of production of driving shafts, in particular to an oil injection device of a driving shaft, which comprises an oil injection cylinder, wherein an inner cylinder is inserted into the oil injection cylinder, one end of the inner cylinder is fixedly connected with a cylinder sleeve, the cylinder sleeve is sleeved on the oil injection cylinder, external threads are processed on the outer surface of the cylinder sleeve, a limiting ring is fixedly connected with the outer surface of one end, close to the cylinder sleeve, of the oil injection cylinder, an internal thread cap is arranged on one side, away from the cylinder sleeve, of the limiting ring, the internal thread cap is sleeved on the oil injection cylinder and is in threaded connection with the cylinder sleeve, an oil filling port arranged along the length direction of the inner cylinder is formed in the outer surface of the inner cylinder, a piston is arranged in the inner cylinder in a sliding mode, a convex block is fixed on the outer surface of: the convenient butter that adds of realization avoids the butter gathering at the nozzle position of annotating a section of thick bamboo, reduces the wasting of resources, improves the interpolation efficiency of butter.)

1. The utility model provides an oiling device of drive shaft, includes oiling section of thick bamboo (1), its characterized in that: an inner barrel (16) is inserted into the oil injection barrel (1), a barrel sleeve (19) is fixedly connected to one end of the inner barrel (16), the barrel sleeve (19) is sleeved on the oil injection barrel (1), external threads are machined on the outer surface of the barrel sleeve (19), a limiting ring (20) is fixedly connected to the outer surface of one end, close to the barrel sleeve (19), of the oil injection barrel (1), an internal thread cap (9) is arranged on one side, deviating from the barrel sleeve (19), of the limiting ring (20), the internal thread cap (9) is sleeved on the oil injection barrel (1) and is in threaded connection with the barrel sleeve (19), an oil filling port (22) arranged along the length direction of the inner barrel (16) is formed in the outer surface of the inner barrel (16), a piston (17) is arranged in the inner barrel (16) in a sliding mode, an electric push rod (4) movable end is fixedly connected to the middle of one side of the piston (17), carry and install two supports (3) on the disc (5) annular side symmetry, the one end and the oiling section of thick bamboo (1) fixed connection of carrying disc (5) are kept away from in support (3), piston (17) surface mounting has lug (21), lug (21) extend to in oil filler hole (22) and laminate mutually with oil filler hole (22) inner wall.

2. The oil injecting device for a drive shaft according to claim 1, wherein: support (3) keep away from one end fixedly connected with ring (2) of carrying dish (5), ring (2) cover is established on oiling section of thick bamboo (1), be equipped with solid fixed ring (15) in ring (2), gu fixed ring (15) cover is established on oiling section of thick bamboo (1) and with oiling section of thick bamboo (1) fixed connection, two screw holes have been seted up to ring (2) surface symmetry, gu fixed ring (15) surface set up two and screw hole matched with pinhole (26), screw hole female connection has extensible to screw thread post (13) in pinhole (26), the one end fixedly connected with handle (14) of ring (2) are kept away from in screw thread post (13).

3. The oil injecting device for a drive shaft according to claim 1, wherein: the one side middle part position that year dish (5) deviate from electric putter (4) installs detachable twine line pole (6), twine line pole (6) keep away from one end fixedly connected with who carries dish (5) and be used for limiting spacing dish (7) of power cord position.

4. The oil injecting device for a drive shaft according to claim 1, wherein: barrel casing (19) internal surface is seted up along spacing groove (27) that barrel casing (19) axis direction was arranged, the one end external surface that annotates a section of thick bamboo (1) is in barrel casing (19) is fixed with spacing strip (25) with spacing groove (27) matched with, spacing strip (25) are inserted in spacing groove (27), spacing strip (25) and an oiling section of thick bamboo (1) are integrated into one piece structure.

5. The oil injecting device for a drive shaft according to claim 1, wherein: the one end surface processing that inner tube (16) are close to barrel casing (19) has first ring channel, install in the first ring channel with the first rubber circle (18) of oiling barrel (1) inner wall laminating mutually, the one end surface that first ring channel was kept away from in inner tube (16) has seted up the second ring channel, install in the second ring channel with second rubber circle (24) of oiling barrel (1) inner wall laminating mutually, oil filler hole (22) set up between first ring channel and second ring channel, first rubber circle (18) are the same with second rubber circle (24) specification.

6. The oil injecting device for a drive shaft according to claim 1, wherein: one side of piston (17) installation electric putter (4) is fixed with connection pad (28), one side fixedly connected with that connection pad (28) deviate from piston (17) inserts a section of thick bamboo (29), electric putter (4) expansion end assign in insert a section of thick bamboo (29) and with insert a section of thick bamboo (29) fixed connection.

7. The oil injecting device for a drive shaft according to claim 1, wherein: one side middle part position fixedly connected with that a barrel casing (19) was kept away from to oiling section of thick bamboo (1) is linked together with oiling section of thick bamboo (1) oil-out (23), threaded connection has first nut (10) on oil-out (23), first nut (10) and high pressure hose (11) fixed connection communicate with each other, the one end fixedly connected with of first nut (10) and drive shaft oiling mouth threaded connection's second nut (12) are kept away from in high pressure hose (11).

8. The oil injecting device for a drive shaft according to claim 1, wherein: electric putter (4) cylinder body end fixedly connected with stiffener (8), the one end and support (3) fixed connection of electric putter (4) are kept away from in stiffener (8).

9. The oil injecting device for a drive shaft according to claim 1, wherein: the barrel sleeve (19) and the inner barrel (16) are of an integrally formed structure, and the lug (21) and the piston (17) are of an integrally formed structure.

10. The oil injecting device for a drive shaft according to claim 1, wherein: oiling section of thick bamboo (1) is close to one end surface processing of spacing ring (20) has conical surface (30), spacing ring (20) are equipped with oil storage cover (31) towards one side of conical surface (30), oil storage cover (31) cover is established on oiling section of thick bamboo (1) and oil storage cover (31) and barrel casing (19) internal surface laminate mutually, a plurality of inserted bar (31) is evenly installed towards the one side of spacing ring (20) in oil storage cover (31), a plurality of and inserted bar (32) matched with jack are evenly seted up towards the one side of oil storage cover (31) in spacing ring (20), inserted bar (32) are inserted in the jack.

Technical Field

The invention discloses an oiling device for a driving shaft, and belongs to the technical field of driving shaft production.

Background

The drive shaft is a component of a power train used in a rear wheel drive vehicle or a four wheel drive vehicle, which transmits power of an engine to rear wheels, and is one of indispensable parts on an automobile, and oil needs to be injected into the automobile drive shaft in a production process.

At present, when utilizing a section of thick bamboo of annotating to squeeze into the butter in the automobile drive axle, when the butter in a section of thick bamboo of annotating is used up the back, generally need the manual work to add the butter in the section of thick bamboo of annotating, nevertheless have certain viscosity because of the butter, and the opening of a section of thick bamboo of annotating is less, at the interpolation butter in-process, the nozzle part of a section of thick bamboo of annotating gathers more butter easily, has been added the butter in a section of thick bamboo of annotating in addition and has been taken out by the refueling instrument easily, and the butter.

Disclosure of Invention

In view of the shortcomings in the prior art, the present invention is directed to a device for injecting oil into a drive shaft to solve the above problems.

In order to achieve the purpose, the invention is realized by the following technical scheme: an oiling device of a driving shaft comprises an oiling barrel, wherein an inner barrel is inserted into the oiling barrel, one end of the inner barrel is fixedly connected with a barrel sleeve, the barrel sleeve is sleeved on the oiling barrel, the outer surface of the barrel sleeve is provided with external threads, one end of the oiling barrel close to the barrel sleeve is fixedly connected with a limiting ring, one side of the limiting ring, which is far away from the barrel sleeve, is provided with an internal thread cap, the internal thread cap is arranged on the oiling barrel and is in threaded connection with the barrel sleeve, the outer surface of the inner barrel is provided with an oiling port arranged along the length direction of the inner barrel, a piston is slidably arranged in the inner barrel, the middle position of one surface of the piston is fixedly connected with an electric push rod movable end, a cylinder body end of the electric push rod is fixedly connected with a carrying disc, two supports are symmetrically arranged on the annular side surface of the carrying disc, the lug extends into the oil filler and is attached to the inner wall of the oil filler.

Specifically, the support is kept away from the one end fixedly connected with ring that carries the dish, the ring cover is established on annotating a oiling section of thick bamboo, be equipped with solid fixed ring in the ring, gu fixed ring cover establish on annotating a oiling section of thick bamboo and with annotate oiling section of thick bamboo fixed connection, two screw holes have been seted up to ring surface symmetry, gu fixed ring surface sets up two and screw hole matched with pinholes, screw hole female connection has the screw thread post of extensible to pinhole, the one end fixedly connected with handle of ring is kept away from to the screw thread post.

Specifically, carry a dish and deviate from electric putter's one side middle part position and install detachable twine the line pole, twine the line pole and keep away from the spacing dish that the one end fixedly connected with of carrying the dish was used for limiting power line position.

Specifically, the barrel casing internal surface is seted up along the spacing groove that barrel casing axis direction was arranged, the one end surface that annotates oil a section of thick bamboo is in the barrel casing is fixed with the spacing strip with spacing groove matched with, spacing strip assigns into the spacing inslot, spacing strip and notes oil a section of thick bamboo be integrated into one piece structure.

Specifically, the inner tube is close to the one end surface processing of barrel casing and has first ring channel, install the first rubber circle of laminating mutually with oiling section of thick bamboo inner wall in the first ring channel, the one end surface that first ring channel was kept away from to the inner tube has seted up the second ring channel, install the second rubber circle of laminating mutually with oiling section of thick bamboo inner wall in the second ring channel, the oil filler hole sets up between first ring channel and second ring channel, first rubber circle is the same with second rubber circle specification.

Specifically, a connecting disc is fixed to one face of the piston, where the electric push rod is installed, the connecting disc is fixedly connected with an inserting cylinder away from the piston, and the movable end of the electric push rod is inserted into the inserting cylinder and fixedly connected with the inserting cylinder.

Specifically, the oil-out that a barrel casing was kept away from to the oiling section of thick bamboo one side middle part position fixedly connected with and oiling section of thick bamboo were linked together, threaded connection has first nut on the oil-out, first nut and high pressure hose fixed connection communicate with each other, the one end fixedly connected with that the first nut was kept away from to the high pressure hose and drive shaft oiling mouth threaded connection's second nut.

Specifically, electric putter cylinder body end fixedly connected with stiffener, the one end and the support fixed connection of electric putter are kept away from to the stiffener.

Specifically, the barrel sleeve and the inner barrel are of an integrally formed structure, and the lug and the piston are of an integrally formed structure.

Specifically, the processing of the one end surface that an oiling section of thick bamboo is close to the spacing ring has the conical surface, the spacing ring is equipped with the oil storage cover towards one side of conical surface, the oil storage ways is established on an oiling section of thick bamboo and oil storage cover and barrel casing internal surface laminate mutually, a plurality of inserted bar is evenly installed to the one side of oil storage cover face to the spacing ring, a plurality of and inserted bar matched with jack have evenly been seted up towards the one side of oil storage cover to the spacing ring, the inserted bar is inserted in the jack.

The invention has the beneficial effects that:

1. according to the oil injection device for the driving shaft, disclosed by the invention, when the inner cylinder is inserted into the oil injection cylinder, the cylinder sleeve processed with the external thread is sleeved on the oil injection cylinder, and then the internal thread cap is screwed on the cylinder sleeve until the internal thread cap and the cylinder sleeve are tightly attached to the limiting ring, so that the fixed connection between the inner cylinder and the oil injection cylinder is completed, and the later-stage disassembly and assembly of the inner cylinder are facilitated.

2. According to the oil injection device for the driving shaft, disclosed by the invention, after the inner cylinder is arranged in the oil injection cylinder, the grease is added into the inner cylinder through the oil filling port, so that the operation space for adding the grease into the inner cylinder is enlarged, after the grease in the inner cylinder is added, the inner cylinder is inserted into the oil injection cylinder and is fixedly connected with the oil injection cylinder, the grease is conveniently added, the grease is prevented from being accumulated at the cylinder opening part of the oil injection cylinder, the resource waste is reduced, and the grease addition efficiency is improved.

3. According to the oil injection device of the driving shaft, the convex block is arranged on the outer surface of the piston and extends into the oil filling port, so that when the piston moves under the action of the electric push rod, the piston drives the convex block to move along the oil filling port, and grease in the oil filling port is extruded out.

4. According to the oil injection device of the driving shaft, the first rubber ring and the second rubber ring are arranged on the outer surface of the inner cylinder, and the oil filling port is positioned between the first rubber ring and the second rubber ring, so that the first rubber ring and the second rubber ring jointly improve the sealing property between the inner cylinder and the oil injection cylinder, and the grease is prevented from overflowing through a gap between the inner cylinder and the oil injection cylinder in the oil injection process.

5. According to the oil injection device for the driving shaft, disclosed by the invention, when the inner cylinder is inserted into the oil injection cylinder, a small amount of lubricating oil attached to the surface of the inner cylinder is scraped into the oil storage sleeve by the conical surface, so that the aim of temporarily storing the lubricating oil is fulfilled, the lubricating oil attached to the surface of the inner cylinder is prevented from being attached to the surfaces of other parts at will, and the scraped lubricating oil can be transferred by detaching the oil storage sleeve.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic view of an oil injection device for a drive shaft according to the present invention;

FIG. 2 is an enlarged view of the position A of the oil injection device of the driving shaft according to the present invention;

FIG. 3 is a schematic view showing the assembly of a piston, an inner cylinder and an oil cylinder in the oil injecting device for a driving shaft according to the present invention;

FIG. 4 is a perspective view of an oil injection cylinder in the oil injection device of the driving shaft according to the present invention;

FIG. 5 is a perspective view of an inner cylinder of the oiling device for a driving shaft according to the present invention;

FIG. 6 is an enlarged view of FIG. 5 at B;

FIG. 7 is a perspective view of a piston of the oil injection apparatus for a driving shaft according to the present invention;

in the figure: 1. the oil filling device comprises an oil filling cylinder, 2, a circular ring, 3, a support, 4, an electric push rod, 5, a carrying disc, 6, a winding rod, 7, a limiting disc, 8, a reinforcing rod, 9, an internal thread cap, 10, a first nut, 11, a high-pressure hose, 12, a second nut, 13, a threaded column, 14, a handle, 15, a fixing ring, 16, an inner cylinder, 17, a piston, 18, a first rubber ring, 19, a cylinder sleeve, 20, a limiting ring, 21, a bump, 22, an oil filling port, 23, an oil outlet, 24, a second rubber ring, 25, a limiting strip, 26, a pin hole, 27, a limiting groove, 28, a connecting disc, 29, an inserting cylinder, 30, a conical surface, 31, an oil storage sleeve, 32 and an inserting rod.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

Referring to fig. 1 to 7, the present invention provides a technical solution: the utility model provides an oiling device of drive shaft, including annotating a section of thick bamboo 1, it has inner tube 16 to place in annotating a section of thick bamboo 1, 16 one end fixedly connected with barrel casing 19 of inner tube, 19 covers of barrel casing establish annotate a section of thick bamboo 1 on and 19 surface processing of barrel casing have the external screw thread, annotate a section of thick bamboo 1 and be close to one end surface fixedly connected with spacing ring 20 of barrel casing 19, one side that spacing ring 20 deviates from barrel casing 19 is equipped with internal thread cap 9, internal thread cap 9 covers establishes on annotating a section of thick bamboo 1 and with 19 threaded connection of barrel casing, when placeing inner tube 16 in annotating a section of thick bamboo 1, make the barrel casing 19 cover that has the external screw thread of processing establish on annotating a section of thick bamboo 1, twist internal thread cap 9 on barrel casing 19 afterwards, until internal thread cap 9 and barrel casing 19 all closely laminate with spacing ring 20.

The outer surface of the inner cylinder 16 is provided with an oil filling port 22 arranged along the length direction of the inner cylinder 16, the inner cylinder 16 is added with butter into the inner cylinder 16 by using the oil filling port 22 after being arranged in the oiling cylinder 1, so that the operation space for adding the butter into the inner cylinder 16 is enlarged, after the butter in the inner cylinder 16 is added, the inner cylinder 16 is inserted into the oiling cylinder 1 and is fixedly connected with the oiling cylinder 1, the phenomenon that the butter is gathered at the cylinder port of the oiling cylinder 1 is avoided, the resource waste is reduced, and the butter adding efficiency is improved.

A piston 17 is arranged in the inner cylinder 16 in a sliding mode, the movable end of the electric push rod 4 is fixedly connected to the middle of one surface of the piston 17, after the circuit of the electric push rod 4 is switched on, the electric push rod 4 is controlled to extend, and then the electric push rod 4 drives the piston 17 to extrude grease in the inner cylinder 16, so that the grease is extruded out.

4 cylinder body end fixedly connected with of electric putter carries dish 5, carries and to install two supports 3 on the 5 annular sides of dish symmetrically, and support 3 keeps away from the one end and the oiling section of thick bamboo 1 fixed connection who carries dish 5, and support 3 and year dish 5 provide the support carrier for electric putter 4 jointly.

The outer surface of the piston 17 is fixed with a projection 21, the projection 21 extends into the oil filling opening 22 and is attached to the inner wall of the oil filling opening 22, the projection 21 is arranged on the outer surface of the piston 17, the projection 21 extends into the oil filling opening 22, and therefore when the piston 17 moves under the action of the electric push rod 4, the piston 17 drives the projection 21 to move along the oil filling opening 22, and grease in the oil filling opening 22 is squeezed out.

As an embodiment of the present invention: support 3 keeps away from one end fixedly connected with ring 2 of year dish 5, 2 covers of ring are established on oiling section of thick bamboo 1, be equipped with solid fixed ring 15 in the ring 2, gu fixed ring 15 covers establishes on oiling section of thick bamboo 1 and with 1 fixed connection of oiling section of thick bamboo, two screw holes have been seted up to 2 outer surface symmetries of ring, gu fixed ring 15 outer surface sets up two and screw hole matched with pinhole 26, screw hole female connection has the screw thread post 13 of extensible to pinhole 26 in, screw thread post 13 keeps away from one end fixedly connected with handle 14 of ring 2, establish ring 2 cover after on solid fixed ring 15, make screw hole and pinhole 26 align, utilize handle 14 to twist screw thread post 13 in the screw hole afterwards, and make screw thread post 13 one end extend to in the pinhole 26, realize the mesh of fixed connection ring 2 and solid fixed ring 15, be convenient for the dismouting of support 3 and.

As an embodiment of the present invention: carry dish 5 and deviate from electric putter 4's one side middle part position and install detachable winding pole 6, winding pole 6 keeps away from the spacing dish 7 that the one end fixedly connected with who carries dish 5 is used for limiting power line position, twines the power cord on electric putter 4 on winding pole 6, and then the power cord on electric putter 4 is between spacing dish 7 and year dish 5 under the restriction, plays the purpose of accomodating the power cord, prevents that the power cord on electric putter 4 from putting impaired at will.

As an embodiment of the present invention: the spacing groove 27 that arranges along barrel casing 19 axis direction is seted up to barrel casing 19 internal surface, the one end external surface that an oiling section of thick bamboo 1 is in barrel casing 19 is fixed with the spacing strip 25 with spacing groove 27 matched with, spacing strip 25 assigns into spacing groove 27, spacing strip 25 and an oiling section of thick bamboo 1 be integrated into one piece structure, when establishing barrel casing 19 cover on an oiling section of thick bamboo 1, make spacing strip 25 on an oiling section of thick bamboo 1 assign into spacing groove 27 on barrel casing 19 in, thereby prevent that barrel casing 19 and an oiling section of thick bamboo 1 from taking place relative rotation, be convenient for the dismouting of internal thread cap 9 and barrel casing 19.

As an embodiment of the present invention: a first annular groove is processed on the outer surface of one end of the inner cylinder 16 close to the cylinder sleeve 19, a first rubber ring 18 attached to the inner wall of the oil filling cylinder 1 is installed in the first annular groove, a second annular groove is opened on the outer surface of one end of the inner cylinder 16 far away from the first annular groove, a second rubber ring 24 attached to the inner wall of the oil filling cylinder 1 is installed in the second annular groove, an oil filling port 22 is arranged between the first annular groove and the second annular groove, the first rubber ring 18 and the second rubber ring 24 are in the same specification, the first annular groove provides an installation space for the first rubber ring 18, the second annular groove provides an installation space for the second rubber ring 24, the first rubber ring 18 and the second rubber ring 24 are installed on the outer surface of the inner cylinder 16, the oil filling port 22 is located between the first rubber ring 18 and the second rubber ring 24, and therefore the first rubber ring 18 and the second rubber ring 24 jointly improve the sealing performance between the inner cylinder 16 and the oil, the grease can be prevented from overflowing through the gap between the inner barrel 16 and the grease filling barrel 1 during the grease filling process.

As an embodiment of the present invention: one side of piston 17 installation electric putter 4 is fixed with connection pad 28, and the one side fixedly connected with that connection pad 28 deviates from piston 17 inserts a section of thick bamboo 29, and electric putter 4 expansion end is inserted and is inserted in inserting a section of thick bamboo 29 and with inserting a section of thick bamboo 29 fixed connection, installs connection pad 28 on piston 17 to install on connection pad 28 and insert a section of thick bamboo 29, the dismouting of electric putter 4 and piston 17 of being convenient for.

As an embodiment of the present invention: oil-out 23 that a barrel casing 19 was kept away from to oiling barrel 1 one side middle part position fixedly connected with was linked together with oiling barrel 1, threaded connection has first nut 10 on oil-out 23, first nut 10 communicates with each other with 11 fixed connection of high pressure hose, the one end fixedly connected with that first nut 10 was kept away from to high pressure hose 11 and drive shaft oiling mouth threaded connection's second nut 12, twist first nut 10 on oil-out 23, and be connected second nut 12 with the epaxial oiling mouth of drive shaft, and then realize being connected of oiling barrel 1 and drive shaft, be convenient for to the interior oiling of drive shaft.

As an embodiment of the present invention: 4 cylinder body end fixedly connected with stiffeners 8 of electric putter, stiffener 8 keep away from the one end and the 3 fixed connection of support of electric putter 4, and the stability of 4 installations of electric putter is improved in the design of stiffener 8.

As an embodiment of the present invention: the sleeve 19 and the inner cylinder 16 are integrally formed, and the lug 21 and the piston 17 are integrally formed, so that the structural stability is improved.

As an embodiment of the present invention: the outer surface of one end of the oil filling cylinder 1 close to the limiting ring 20 is processed with a conical surface 30, one side of the limiting ring 20 facing the conical surface 30 is provided with an oil storage sleeve 31, the oil storage sleeve 31 is sleeved on the oil filling cylinder 1 and the oil storage sleeve 31 is attached to the inner surface of the cylinder sleeve 19, one surface of the oil storage sleeve 31 facing the limiting ring 20 is uniformly provided with a plurality of inserted rods 31, one surface of the limiting ring 20 facing the oil storage sleeve 31 is uniformly provided with a plurality of insertion holes matched with the inserted rods 32, the inserted rods 32 are inserted into the insertion holes to sleeve the oil storage sleeve 31 on the oil filling cylinder 1, and the inserting rod 32 is inserted into the inserting hole to realize the insertion of the oil storage sleeve 31, when the inner cylinder 16 is inserted into the oil injection cylinder 1, a small amount of lubricating oil adhered to the surface of the inner cylinder 16 is scraped into the oil storage sleeve 31 by the tapered surface 30, therefore, the purpose of storing lubricating oil is achieved, the lubricating oil adhered to the surface of the inner cylinder 16 is prevented from being adhered to the surfaces of other parts randomly, and the scraped lubricating oil can be transferred by removing the oil storage sleeve 31.

The specific implementation mode is as follows: when the inner cylinder 16 is inserted into the oil injection cylinder 1, the cylinder sleeve 19 which is processed with the external thread is sleeved on the oil injection cylinder 1, and then the internal thread cap 9 is screwed on the cylinder sleeve 19 until the internal thread cap 9 and the cylinder sleeve 19 are tightly attached to the limiting ring 20, so that the fixed connection between the inner cylinder 16 and the oil injection cylinder 1 is completed, and the later-stage disassembly and assembly of the inner cylinder 16 are facilitated.

After the inner cylinder 16 is arranged in the oil injection cylinder 1, grease is added into the inner cylinder 16 through the oil filling port 22, so that the operation space for adding the grease into the inner cylinder 16 is enlarged, after the grease in the inner cylinder 16 is added, the inner cylinder 16 is inserted into the oil injection cylinder 1 and is fixedly connected with the oil injection cylinder 1, the grease is prevented from being gathered at the cylinder port of the oil injection cylinder 1, the resource waste is reduced, and the grease adding efficiency is improved.

A projection 21 is arranged on the outer surface of the piston 17, and the projection 21 extends into the oil filling opening 22, so that when the piston 17 moves under the action of the electric push rod 4, the piston 17 drives the projection 21 to move along the oil filling opening 22, and grease in the oil filling opening 22 is squeezed out.

While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.