CN205824089U - Lifting deceleration machine for large cargo - Google Patents

Abstract

A lift-type reducer for large goods, including a body, in which there is a screw for lifting in the vertical direction, one end of the screw is located in the body and covered with a worm wheel, the worm wheel is connected to a worm, the worm runs through the body and passes through the body The first tapered roller bearing inside is connected to the body in rotation, the end of the worm extending out of the body is the output end, and the two ends of the worm along the axial direction are respectively sleeved with the second tapered roller bearing and the third tapered roller bearing, and the worm is located at the second Between the tapered roller bearing and the third tapered roller bearing, the shape and size of the second tapered roller bearing and the third tapered roller bearing are exactly the same, and are used to set the screw screw fixedly connected to the two worm gears, but the cylindrical bearing cannot Control the rotating speed of lead screw, cause the lifting height of lead screw can not be controlled accurately.

Description

Elevating reducer for large cargo

technical field

The utility model relates to the field of reducers, in particular to a lift-type reducer used for large goods.

Background technique

The reducer plays the role of matching the speed and transmitting torque between the prime mover and the working machine or the actuator. The reducer is a relatively precise machine. The purpose of using it is to reduce the speed and increase the torque. According to the number of transmission stages, it can be divided into single-stage and multi-stage reducers; according to the shape of the gear wheel, it can be divided into cylindrical gear reducers, bevel gear reducers and conical-cylindrical gear pulley reducers; according to the layout of the transmission, it can be divided into It is divided into expansion type, split flow type and coaxial shaft type reducer. The reducer is an independent component composed of gear transmission, worm transmission, and gear-worm transmission enclosed in a rigid shell. It is often used as a reduction transmission device between the original moving part and the working machine. It plays the role of matching speed and transmitting torque between prime mover and working machine or actuator, and is widely used in modern machinery.

The existing cylindrical bearing installed in the body of the lifting reducer used for large cargo is used for the screw that is fixedly connected with the inner sleeve of a worm wheel, but the cylindrical bearing cannot control the speed of the screw, so the lifting height of the screw cannot be obtained. accurate control.

Utility model content

The purpose of the utility model is to provide a lifting reducer for large goods. Tapered roller bearings are arranged in the body to reduce the rotation speed of the screw and improve the accuracy of the lifting height of the screw.

The above purpose of the utility model is achieved through the following technical proposals: a lift-type reducer for large goods, including a body, the body is provided with a lead screw for lifting along the vertical direction, one end of the lead screw is located in the body and the outer cover There is a worm wheel, and the worm wheel is connected to the worm screw. The worm screw runs through the body and is connected to the body through the first tapered roller bearing in the body. The end of the worm extending out of the body is the output end. The roller bearing and the third tapered roller bearing, the worm is located between the second tapered roller bearing and the third tapered roller bearing, and the shape and size of the second tapered roller bearing and the third tapered roller bearing are exactly the same.

By adopting the above-mentioned technical solution, the output end of the worm is connected to the motor, and the motor drives the worm to rotate, and the worm is connected to the first tapered roller bearing in the body for rotation, the first tapered roller bearing is used to bear the radial load of the worm, and the first When the tapered roller bearing is used to bear the radial load, the rotation of the worm wheel drives the screw fixedly connected with it to rotate. The second tapered roller bearing and the third tapered roller bearing arranged at both ends of the worm wheel are used to bear the load with large cargo. When the screw is lifted and lowered, the worm wheel produces a huge radial load. At the same time, the second tapered roller bearing and the third tapered roller bearing limit the rotation of the worm wheel, so that the speed of the screw is also limited, which further improves the lifting speed of the screw. accuracy.

Preferably, the second tapered roller bearing is arranged obliquely from bottom to top, and the third tapered roller bearing is arranged obliquely from top to bottom.

By adopting the above technical scheme, the second tapered roller bearing is arranged obliquely from bottom to top, bearing the radial load of the worm wheel, and at the same time generates an obliquely downward axial component force; the third tapered roller bearing is arranged from top to top The downward inclined setting bears the radial load of the worm wheel, and at the same time generates an inclined upward axial component force; the two axial component forces are the same in magnitude and opposite in direction, which can cancel each other out, ensuring that the service life of the worm wheel is extended.

Preferably, an oil inlet is provided on one side of the machine body, and the oil inlet is arranged obliquely from top to bottom.

By adopting the above technical scheme, since the second tapered roller bearing and the third tapered roller bearing in the lifting reducer are in a non-stop working state, they need to be lubricated by lubricating oil to avoid the second tapered roller bearing and the third tapered roller bearing. The sub-bearings generate huge friction and cause the bearings to break. Since the paste-like synthetic lithium-based grease is used as a lubricant, in order to make it enter the body smoothly, the oil inlet is inclined from top to bottom, so that the lithium-based grease slides under the action of gravity. into the body.

Preferably, the body is located directly below the lead screw and has an oil outlet, and the oil outlet is equipped with a plug for blocking the oil outlet.

By adopting the above technical scheme, since the second tapered roller bearing and the third tapered roller bearing in the lifting reducer are in a non-stop working state, it is necessary to add a paste-like synthetic lithium-based grease as a lubricant; after a period of use Afterwards, it is necessary to replace the paste-like synthetic lithium-based grease. The invalid paste-like synthetic lithium-based grease settles at the bottom of the body and is discharged through the oil outlet at the bottom. When it is necessary to replace the paste-like synthetic lithium-based grease, separate the plug and the body to discharge the invalid paste-like synthetic lithium-based grease; after replacing the paste-like synthetic lithium-based grease, seal the oil outlet with a plug .

Preferably, the plug is a horizontal "E" shape, and flanges for sealing the machine body are provided at both ends of the plug.

By adopting the above technical scheme, the flanges provided at both ends of the horizontal "E"-shaped plug are reeded to the machine body, which is convenient for disassembly and can also ensure the sealing performance of the plug and the body.

Preferably, the plug is made of oil-repellent elastic material.

By adopting the above technical scheme, since the synthetic lithium-based grease is oily, in order to prevent the plug from being corroded by the invalid synthetic lithium-based grease and cause the plug to break, the plug is made of oil-repellent material; at the same time, it is convenient for the plug and the body Sealing and dismounting, the plug is made of elastic material.

Preferably, the side of the worm gear close to the bottom of the body has a notch, the notch is located directly below the oil outlet, and the end of the screw located in the body is provided with a threaded opening along the axial direction, and a pressure plate is arranged in the notch, and the pressure plate is located on the diameter of the worm wheel. To both sides, the threaded ports of the pressure plate and the lead screw are connected by screws.

By adopting the above technical solution, the screw passes through the pressure plate and is fixedly connected to the threaded opening, the two ends of the pressure plate are in conflict with the two ends of the worm wheel, and the pressure plate and the screw are arranged to limit the axial movement of the lead screw.

Preferably, the other end of the worm extends out of the machine body, and the other end of the worm is an output end.

By adopting the above technical solution, the output end of the worm is connected to the motor, and both ends extend out of the body, and both are output ends, which can solve the problem that the motor reducer cannot be installed due to terrain restrictions.

Description of drawings

Figure 1 is a schematic structural diagram of a lifting reducer for large cargo;

Figure 2 is a top view of the lifting reducer for large cargo.

Reference signs: 1, body; 2, lead screw; 3, worm wheel; 4, worm; 5, first tapered roller bearing; 6, second tapered roller bearing; 7, third tapered roller bearing; 8, Oil inlet; 9, oil outlet; 10, plug; 11, notch; 12, threaded port; 13, pressure plate.

detailed description

Below in conjunction with accompanying drawing, the utility model is described in further detail.

As shown in Figures 1 and 2, a lifting reducer for large goods includes a body 1, a screw 2 is arranged vertically on the body 1, one end of the screw 2 is a working end, and the other end is arranged in the body 1. The lead screw 2 in the body 1 covers the worm gear 3, one side of the body 1 runs through both ends in the horizontal direction and rotates to connect the worm 4 at the penetration, the worm 4 and the worm wheel 3 are connected in rotation, and the two ends of the worm 4 cover the first tapered roller bearing 5. The first tapered roller bearing 5 is used to bear the huge radial load generated by the rotation of the worm wheel 3 driven by the worm 4. There are two first tapered roller bearings 5, and the first tapered roller bearing 5 bears the radial load of the worm 4. An axial force is generated at the same time as the load. Since the first tapered roller bearing 5 is placed in an opposite direction, the generated axial forces cancel each other out, and at the same time, it can also limit the rotation speed of the worm 4, that is, limit the rotation speed of the worm wheel 3. , because the worm gear 3 is fixedly connected with the leading screw 2, that is, the speed of the lifting of the leading screw 2 is initially limited.

As shown in Figure 1, in order to further limit the lifting speed of the screw 2, by setting the second tapered roller bearing 6 and the third tapered roller bearing 7 at the two ends of the worm wheel 3, the worm 4 is located between the second tapered roller bearing 6 and the third tapered roller bearing 7. Between the third tapered roller bearings 7, the second tapered roller bearings 6 and the third tapered roller bearings 7 provided at the two ends of the worm wheel 3 are used to bear the huge radial force generated by the worm wheel 3 when the screw rod lifts with large goods. load, while the second tapered roller bearing 6 and the third tapered roller bearing 7 limit the rotation of the worm wheel 3 at the same time, so that the speed at which the leading screw 2 rises is also limited, further improving the accuracy of the lifting of the leading screw 2. The second tapered roller bearing 6 is arranged obliquely from bottom to top, bears the radial load of the worm wheel 3, and at the same time generates an axial component obliquely downward; the third tapered roller bearing 7 is arranged obliquely from top to bottom , bears the radial load of the worm gear 3, and at the same time generates an oblique upward axial component force; the two axial component forces have the same magnitude and opposite directions, which can cancel each other out, ensuring that the service life of the worm gear 3 is extended.

Since the first tapered roller bearing 5, the second tapered roller bearing 6, and the third tapered roller bearing 7 are used to withstand the friction force and the lifting force of the lifting reducer when the lifting reducer is working, the three bearings are worn It is very serious. In order to reduce the wear of the bearing, add the paste-like synthetic lithium-based grease through the oil inlet 8 set on one side of the body 1. In order to make the paste-like synthetic lithium-based grease enter the body 1 smoothly, the oil inlet 8 is from the top However, if it is set on a downward slope, under the action of gravity, the pasty synthetic lithium-based grease can accelerate into the body 1 . After using for a period of time, the paste-like synthetic lithium-based grease will become invalid, and it is necessary to replace the paste-like synthetic lithium-based grease; Port 9 is used to discharge the invalid paste-like synthetic lithium-based grease, remove the plug 10 sealed in the oil outlet 9 in the shape of a horizontal "E" to discharge the invalid paste-like synthetic lithium-based grease; when cleaning is completed After that, it is enough to seal the plug 10 to the oil outlet 9. In order to seal and facilitate the disassembly of the plug 10, the plug 10 is set to a horizontal "E" shape, and flanges are arranged at both ends of the plug 10, and the flanges Buckle the body 1; further facilitate the disassembly and sealing of the oil outlet 9, the plug 10 is made of elastic material; at the same time, the paste-like synthetic lithium-based grease is oily, in order to prolong the service life of the plug 10, the plug 10 has a repellent Oily material is made, so the plug 10 is made of oil-repellent elastic material.

In the process of lifting the lead screw 2, in order to prevent the lead screw 2 from detaching from the worm wheel 3, the worm wheel 3 is provided with a notch 11 near the bottom of the body 1, the notch 11 is located directly below the oil outlet 9, and the two ends of the pressure plate 13 and the worm wheel The two ends of 3 are in conflict, and the screw is fixedly connected through the threaded port 12 at one end of the lead screw 2 arranged in the body 1 through the pressure plate 13, and the pressure plate 13 and the screw are arranged to limit the axial movement of the lead screw 2.

As shown in Figure 2, both ends of the worm 4 run through the body 1, and both ends are output ends, which can ensure that at least one end of the lifting reducer for large cargo can work with the motor when the terrain is limited.

This specific embodiment is only an explanation of the utility model, and it is not a limitation of the utility model. After reading this description, those skilled in the art can make modifications to the embodiment without creative contribution according to needs, but as long as it is within the utility model All new claims are protected by patent law.

Claims (8)

1. for the lifting deceleration machine of large cargo, including body (1), be vertically provided with in body (1) for The leading screw (2) of lifting, described leading screw (2) one end is positioned at body (1) and the outer worm gear (3) that is cased with, and described worm gear (3) rotation is even Worm screw (4), described worm screw (4) is had to run through body (1) and by the first taper roll bearing (5) in body (1) and body (1) being rotationally connected, it is outfan that worm screw (4) extends one end of body (1), it is characterized in that: described worm screw (4) two ends vertically Being cased with the second taper roll bearing (6) and the 3rd taper roll bearing (7) respectively, described worm screw (4) is positioned at the second taper roller Between bearing (6) and the 3rd taper roll bearing (7), the second taper roll bearing (6) and the 3rd taper roll bearing (7) shape Identical with size.

Lifting deceleration machine for large cargo the most according to claim 1, is characterized in that: described second taper roller Bearing (6) is obliquely installed from bottom to top, and described 3rd taper roll bearing (7) is obliquely installed from top to bottom.

Lifting deceleration machine for large cargo the most according to claim 1, is characterized in that: described body (1) side Being provided with oil-in (8), described oil-in (8) is obliquely installed from top to bottom.

Lifting deceleration machine for large cargo the most according to claim 1, is characterized in that: described body (1) is positioned at The underface of leading screw (2) has oil-out (9), and described oil-out (9) is furnished with the plug (10) for blocking oil-out (9).

Lifting deceleration machine for large cargo the most according to claim 4, is characterized in that: described plug (10) is horizontal stroke " E " type crouched, and plug (10) two ends are provided with the flange for body-sealing (1).

Lifting deceleration machine for large cargo the most according to claim 5, is characterized in that: described plug (10) is by refusing The elastomeric material of oiliness is made.

Lifting deceleration machine for large cargo the most according to claim 6, is characterized in that: described worm gear (3) is close The side of body (1) bottom has notch (11), and described notch (11) is positioned at immediately below oil-out (9), and described leading screw (2) is positioned at One end in body (1) has screw thread mouth (12) vertically, is provided with pressing plate (13), described pressing plate (13) position in described notch (11) In worm gear (3) radially opposite sides, the screw thread mouth (12) of described pressing plate (13) and leading screw (2) is connected by screw.

Lifting deceleration machine for large cargo the most according to claim 1, is characterized in that: described worm screw (4) another End extends body (1), and the other end of worm screw (4) is outfan.