CN211415031U - Lubricating device for electric hammer impact transmission mechanism - Google Patents

Abstract

The utility model discloses an electric hammer strikes drive mechanism lubricating arrangement, including organism, skull, middle lid, impact slewing mechanism, gear drive, motor, organism skull cooperation constitute connecting rod room and cylinder chamber, be equipped with the oil filler hole on the connecting rod room, the organism constitutes the gear drive room with middle lid cooperation, gear drive installs in the gear drive, impact slewing mechanism includes the connecting rod, the piston, the cylinder, big bevel gear, the cylinder sets up on the cylinder chamber through oiliness bearing and sixth bearing, the piston sets up on the cylinder, be equipped with the impact hammer in the cylinder, the connecting rod correspondence is connected between piston and eccentric shaft, big bevel gear and bevel gear shaft meshing are equipped with the grease proofing second gasket that prevents connecting rod room and cylinder chamber cluster oil at oiliness bearing's terminal surface. After adopting this structure, have simple structure reasonable, the partition is lubricated, lubricated effectual, frictional resistance is little, work efficiency is high, the noise is low, advantages such as long service life.

Description

Lubricating device for electric hammer impact transmission mechanism

Technical Field

The utility model relates to an electric tool technical field, especially a smooth and sealed effectual electric hammer impact drive mechanism lubricating arrangement.

Background

The electric hammer is an electric tool which can drive a drill bit to rotate and can also hammer the drill bit to and fro for drilling, when the electric hammer works, a gear transmission mechanism drives a cylinder through a large bevel gear, the cylinder drives the drill bit to rotate through a drill bushing, the gear transmission mechanism drives a connecting rod through an eccentric shaft, the connecting rod drives a piston to and fro compress air in the cylinder to ensure that the air pressure in the cylinder is changed periodically, and the changed air pressure drives a hammer in the cylinder to and fro strike the drill bit, and is mainly used for drilling on concrete, floor slabs, brick walls and stone materials. The prior electric hammer has the following problems in the using process: firstly, most electric hammers do not strictly distinguish gear drive, connecting rod piston mechanism and cylinder impact mechanism's difference at lubricated in-process, and the lubricating grease with the same row number basically, the lubricating grease of different row numbers is adopted to the minority, but link chamber, cylinder chamber, gear drive room do not set up seal structure each other, and the lubricating grease of different studio is colluded each other, leads to the cylinder lubricated effect poor, and piston seal wearing and tearing speed is big, and piston reciprocating motion resistance is big. Secondly, the shaft end sealing effect of the motor output gear is poor, oil leakage can often occur, the lubricating effect of the gear is seriously affected, the gear transmission noise is large, and the service life of the gear is greatly shortened. Aiming at the problems, many manufacturers and acquaintances develop and develop the products, but no ideal products are seen.

Disclosure of Invention

In order to overcome the problems existing in the prior art, the first object of the utility model is to provide an electric hammer impact transmission mechanism lubricating device which has the advantages of simple and reasonable structure, good partition lubrication effect, small friction resistance, high working efficiency, low noise and long service life.

The utility model solves the technical problems and adopts the technical proposal that the utility model comprises a machine body, a head cover, a middle cover, an impact rotating mechanism, a gear transmission mechanism and a motor fixed on the middle cover, the machine body and the head cover are matched to form a connecting rod chamber and a cylinder chamber, the connecting rod chamber is provided with an oil filling port, the oil filling port is provided with an oil sealing cover, the machine body and the middle cover are matched to form the gear transmission chamber, the gear transmission mechanism is arranged in the gear transmission chamber, the impact rotating mechanism comprises a connecting rod, a piston, a cylinder and a big bevel gear fixed on the cylinder, the cylinder is rotatablely arranged on the cylinder chamber through an oil bearing and a sixth bearing, the piston is arranged on the cylinder in a reciprocating motion way, a hammer with one end matched with the piston and the other end matched with a drill rod is arranged in the cylinder, the connecting rod is correspondingly connected between the eccentric shaft of the piston and the gear, and a second oil-proof gasket for preventing the oil from flowing between the connecting rod chamber and the cylinder chamber is arranged on the end surface of the oil-containing bearing.

The utility model discloses a further scheme, gear drive include the eccentric shaft, fix pinion, bevel gear axle on the eccentric shaft, fix the epaxial gear wheel of bevel gear, the eccentric shaft passes through second bearing and third bearing and rotationally sets up in gear drive chamber and is connected with the connecting rod, bevel gear axle through fourth bearing and fifth bearing rotationally set up in gear drive chamber and with big bevel gear engagement, the output gear axle of motor cover in the middle of through the rotatable setting of first bearing and respectively with pinion and gear wheel engagement.

The utility model discloses a further scheme, the both sides correspondence of third bearing is equipped with and prevents the sealing washer and the grease proofing gasket of connecting rod room and gear drive room cluster oil with the eccentric shaft cooperation, and the terminal surface of fifth bearing is equipped with and prevents the sealed friction gasket of cylinder chamber and gear drive room cluster oil with the bevel gear axle cooperation.

The utility model discloses a further scheme, the gear drive room side of first bearing is equipped with the first grease proofing gasket and the grease proofing packing ring that prevent the oil leak with the cooperation of output gear axle.

After adopting above-mentioned structure, compare with prior art and have following advantage and effect: firstly, lubricate according to the functional requirement subregion strictly, gear drive room adopts ordinary lubricating grease, and the connecting rod room adopts lubricating oil, and the cylinder chamber adopts high temperature lubricating grease, and sealed cooperation each other does not have the cluster of oil mutually between each studio, can guarantee that different studios reach different lubricated effect. And secondly, the first oil-proof gasket and the oil-proof gasket which are matched with the output gear shaft to prevent oil leakage are arranged on the gear transmission chamber side of the first bearing, so that the gear transmission chamber can be ensured to be oil-tight.

Drawings

Fig. 1 is a schematic view of the fitting structure of the present invention.

The device comprises a motor 1, an output gear shaft 2, a first bearing 3, an oil-proof gasket 4, a second bearing 5, a middle cover 6, a pinion 7, an eccentric shaft 8, a third bearing 9, a sealing ring 10, a first oil-proof gasket 11, a fourth bearing 12, a gearwheel 13, a friction gasket 14, a fifth bearing 15, a bevel gear shaft 16, a machine body 17, an oil sealing cover 18, an oil filling port 19, a connecting rod 20, an oil bearing 21, a second oil-proof gasket 22, a piston 23, a large bevel gear 24, a large bevel gear 25, a hammer 26, a head cover 27 and a sixth bearing 28.

Detailed Description

Fig. 1 shows a specific embodiment of the lubricating device for the impact transmission mechanism of the electric hammer of the present invention, which comprises a machine body 17, a head cover 27, a middle cover 6, an impact rotation mechanism, a gear transmission mechanism, and a motor 1 fixed on the middle cover 6, wherein the machine body 17 and the head cover 27 are matched to form a connecting rod chamber and a cylinder chamber, the connecting rod chamber is provided with an oil filling port 19, the oil filling port 19 is provided with an oil sealing cover 18, the machine body 17 and the middle cover 6 are matched to form a gear transmission chamber, the gear transmission mechanism is installed in the gear transmission chamber, the impact rotation mechanism comprises a connecting rod 20, a piston 23, a cylinder 25, and a large bevel gear 24 fixed on the cylinder 25, the cylinder 25 is rotatably arranged on the cylinder chamber through an oil bearing 21 and a sixth bearing 28, the piston 23 is reciprocatingly arranged on the cylinder 25, the cylinder 25 is internally provided with an impact hammer 26 having one, the connecting rod 20 is correspondingly connected between the piston 23 and the eccentric shaft 8 of the gear transmission mechanism and is positioned in the connecting rod chamber, the big bevel gear 24 is meshed with the bevel gear shaft 16 of the gear transmission mechanism, and the end surface of the oil-containing bearing 21 is provided with a second oil-proof gasket 22 for preventing the oil from flowing between the connecting rod chamber and the cylinder chamber.

In order to ensure stable and reliable transmission, the gear transmission mechanism comprises an eccentric shaft 8, a pinion 7 fixed on the eccentric shaft, a bevel gear shaft 16 and a gearwheel 13 fixed on the bevel gear shaft 16, the eccentric shaft 8 is rotatably arranged in a gear transmission chamber through a second bearing 5 and a third bearing 9 and is connected with a connecting rod 20, the bevel gear shaft 16 is rotatably arranged in the gear transmission chamber through a fourth bearing 12 and a fifth bearing 15 and is meshed with a big bevel gear 24, and an output gear shaft 2 of the motor 1 is rotatably arranged on an intermediate cover 6 through a first bearing 3 and is respectively meshed with the pinion 7 and the gearwheel 13.

In order to prevent the oil leakage between the connecting rod chamber and the gear transmission chamber and between the cylinder chamber and the gear transmission chamber, two sides of the third bearing 9 are correspondingly provided with a sealing ring 10 and an oil-proof gasket which are matched with the eccentric shaft 8 to prevent the oil leakage between the connecting rod chamber and the gear transmission chamber, and the end surface of the fifth bearing 15 is provided with a sealing friction gasket 14 which is matched with the bevel gear shaft 16 to prevent the oil leakage between the cylinder chamber and the gear transmission chamber.

In order to prevent the oil leakage of the gear transmission chamber, the gear transmission chamber side of the first bearing 3 is provided with a first oil-proof gasket 11 and an oil-proof washer 4 which are matched with the output gear shaft 2 to prevent the oil leakage.

The above description is only the specific embodiment of the present invention, and is not intended to limit the present invention in any form, and the present invention does not depart from the technical solution of the present invention, and the made simple modification, equivalent change or modification all fall into the protection scope of the present invention.

Claims (4)

1. The utility model provides an electric hammer strikes drive mechanism lubricating arrangement, includes organism (17), skull (27), middle lid (6), strikes slewing mechanism, gear drive, fixes motor (1) on middle lid (6), characterized by: the engine body (17) and the head cover (27) are matched to form a connecting rod chamber and a cylinder chamber, an oil filling port (19) is arranged on the connecting rod chamber, an oil sealing cover (18) is arranged on the oil filling port (19), the engine body (17) and the middle cover (6) are matched to form a gear transmission chamber, the gear transmission mechanism is arranged in the gear transmission chamber, the impact rotation mechanism comprises a connecting rod (20), a piston (23), a cylinder (25) and a big bevel gear (24) fixed on the cylinder (25), the cylinder (25) is rotatably arranged on the cylinder chamber through an oil bearing (21) and a sixth bearing (28), the piston (23) is arranged on the cylinder (25) in a reciprocating manner, a punching hammer (26) with one end matched with the piston (23) and the other end matched with the drill rod is arranged in the cylinder (25), and the connecting rod (20) is correspondingly connected between the piston (23) and the eccentric shaft (8), the big bevel gear (24) is engaged with a bevel gear shaft (16) of the gear transmission mechanism, and a second oil-proof gasket (22) for preventing oil from flowing between the connecting rod chamber and the cylinder chamber is arranged on the end surface of the oil-containing bearing (21).

2. The lubricating device for the impact transmission mechanism of the electric hammer as claimed in claim 1, wherein: the gear transmission mechanism comprises an eccentric shaft (8), a pinion (7) fixed on the eccentric shaft (8), a bevel gear shaft (16) and a bull gear (13) fixed on the bevel gear shaft (16), the eccentric shaft (8) is rotatably arranged in a gear transmission chamber through a second bearing (5) and a third bearing (9) and is connected with a connecting rod (20), the bevel gear shaft (16) is rotatably arranged in the gear transmission chamber through a fourth bearing (12) and a fifth bearing (15) and is meshed with a bull bevel gear (24), and an output gear shaft (2) of the motor (1) is rotatably arranged on a middle cover (6) through a first bearing (3) and is respectively meshed with the pinion (7) and the bull gear (13).

3. The lubricating device for the impact transmission mechanism of the electric hammer as claimed in claim 2, wherein: and the two sides of the third bearing (9) are correspondingly provided with a sealing ring (10) and an oil-proof gasket which are matched with the eccentric shaft (8) to prevent the oil leakage between the connecting rod chamber and the gear transmission chamber, and the end surface of the fifth bearing (15) is provided with a sealing friction gasket (14) which is matched with the bevel gear shaft (16) to prevent the oil leakage between the cylinder chamber and the gear transmission chamber.

4. The electric hammer impact transmission mechanism lubricating apparatus according to claim 2 or 3, wherein: the side of the gear transmission chamber of the first bearing (3) is provided with a first oil-proof gasket (11) and an oil-proof gasket (4) which are matched with the output gear shaft (2) to prevent oil leakage.

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