CN205500666U - Spiral bevel gear ball screw lift - Google Patents

Abstract

The utility model discloses a spiral bevel gear ball screw lift, including the box, rotationally install power input shaft on the box, power input shaft's first end stretches out the outside of box, and power input shaft's second end position is in the box, second end fixedly connected with spiral bevel gear, rotationally install the nut with spiral bevel gear complex ball in the box, rotationally install in the box with ball nut complex ball. The beneficial effects of the utility model are that: ball's lifting speed is fast, and transmission efficiency is high.

Description

Spiral bevel gear ball screw lift

technical field

The utility model relates to the field of machinery, in particular to a spiral bevel gear ball screw elevator.

Background technique

The screw jack usually includes a cylinder with thread on the surface, and the rotation of the worm gear or the nut matched with the thread causes the cylinder to rotate and have axial displacement at the same time, so as to achieve the purpose of lifting.

Utility model content

The purpose of this utility model is to provide a spiral bevel gear ball screw lift, which drives the rotation of the spiral bevel gear through the rotation of the power input shaft, thereby driving the rotation of the ball screw nut, so that the ball screw rotates while having an axial Displacement, completes lifting action with this, to overcome the above-mentioned deficiency that prior art exists.

The purpose of this utility model is achieved through the following technical solutions:

A spiral bevel gear ball screw lift, comprising a box body, on which a power input shaft is rotatably installed, the first end of the power input shaft protrudes from the outside of the box body, and the power input shaft the second end of the shaft is located in the box;

The second end is fixedly connected with a spiral bevel gear;

A ball screw nut cooperating with the spiral bevel gear is rotatably installed in the box;

A ball screw matched with the ball screw nut is rotatably installed in the box.

Further, the utility model also includes a bearing housing and a first tapered roller bearing with an outer ring installed on the bearing housing, a first opening is provided on the housing, and the bearing housing is fixed on the first opening Above, the inner ring of the power input shaft is fixed on the inner ring of the first tapered roller bearing.

Further, an oil seal and a parallel cap are installed between the power input shaft and the bearing seat, and the parallel cap and the oil seal are sequentially arranged along a direction away from the first tapered roller bearing.

Further, the two opposite side walls of the box body are respectively provided with a second opening and a third opening, and a second tapered roller bearing and a third tapered roller bearing are installed on the second opening and the third opening respectively. A roller bearing, one end of the ball screw is rotatably mounted on the second opening through the second tapered roller bearing, and the other end of the ball screw is rotatable through the third tapered roller bearing On the ground and the third opening, the ball screw nut is fixed on the third tapered roller bearing.

Further, the second opening upper cover is closed with an upper cover, and the middle part of the upper cover has a through hole for the ball screw to pass through, and the third opening upper cover is closed with a lower cover, and the lower cover The middle part has a through hole for the ball screw to pass through.

Further, the ball screw includes an upper ball screw and a lower ball screw connected by a connector, and the connector is located between the second tapered roller bearing and the third tapered roller bearing, so The upper ball screw is installed in the second opening, and the lower ball screw is installed in the third opening.

The beneficial effects of the utility model are:

The use of spiral bevel gear transmission makes the speed on the axis generated by the rotation of the ball screw fast. Through the setting of the transmission ratio, the lifting speed (speed on the axis) of the ball screw can reach more than 5000mm/min. Ordinary worm gear screw lift Usually less than 2000/min;

High transmission efficiency, helical bevel gear and ball screw nut mesh transmission, ball screw nut and ball screw thread transmission, the transmission efficiency can reach more than 80%, which is higher than the 40% transmission efficiency of the worm gear transmission;

The structure is simple, and each part is convenient to process and assemble.

Description of drawings

Fig. 1 is a schematic structural view of an embodiment of the utility model.

In the figure: 1. Power input shaft; 2. Oil seal; 3. Combined cap; 4. Bearing seat; 5. First tapered roller bearing; 6. Upper cover; 7. Ball screw; 71. Upper ball screw; 72. Lower ball screw; 8. Second tapered roller bearing; 9. Box; 10. Connector; 11. Ball screw nut; 12. Third tapered roller bearing; 13. Lower cover; 14. Screw bevel gear.

detailed description

preferred embodiment

As shown in Fig. 1, a kind of helical bevel gear 14 ball-screw lifter comprises box body 9, and power input shaft 1 is rotatably installed on the box body 9, and the first end of power input shaft 1 extends out of box body 9 Externally, the second end of the power input shaft 1 is located in the box body 9; the second end is fixedly connected with a spiral bevel gear 14; the box body 9 is rotatably installed with a ball screw nut 11 matched with the spiral bevel gear 14; A ball screw 7 cooperating with a ball screw nut 11 is rotatably installed in the body 9 .

When in use, the power input shaft 1 is connected to the power mechanism through the transmission system, so that the rotation of the power input shaft 1 drives the rotation of the spiral bevel gear 14, thereby driving the rotation of the ball screw nut 11, so that the ball screw 7 rotates At the same time, it has axial displacement, so as to complete the lifting action.

The use of spiral bevel gear 14 transmission makes the speed on the axis generated by the rotation of the ball screw 7 fast. Through the setting of the transmission ratio, the lifting speed (speed on the axis) of the ball screw 7 can reach more than 5000mm/min. Screw elevators are usually less than 2000/min.

The utility model also includes a bearing seat 4 and a first tapered roller bearing 5 whose outer ring is installed on the bearing seat 4. The box body 9 is provided with a first opening, the bearing seat 4 is fixed on the first opening, and the power input shaft 1 The inner ring of the first tapered roller bearing is fixed on the inner ring.

The power input shaft 1 is installed on the bearing seat 4 through the first tapered roller bearing 5, and the bearing seat 4 is fixed on the first opening, so that the power input shaft 1 passes through the bearing seat 4 and extends into the box body 9 through the first opening , so as to mesh with the ball screw nut 11 in the box body 9, the bearing housing 4 and the box body 9 are designed separately, which reduces the size of the parts and facilitates processing and assembly.

An oil seal 2 and a parallel cap 3 are installed between the power input shaft 1 and the bearing seat 4 , and the parallel cap 3 and the oil seal 2 are sequentially arranged along a direction away from the first tapered roller bearing 5 . The parallel cap 3 is also called a lock nut. The first tapered roller bearing 5 is locked on the bearing seat 4 through the parallel cap 3. Since the first tapered roller bearing 5 needs a lubricating environment when it works, it is outside the parallel cap 3. The oil seal 2 is installed to seal the first tapered roller bearing 5 to ensure its lubricating effect.

The two opposite side walls of the box body 9 are respectively provided with a second opening and a third opening, and the second opening and the third opening are respectively equipped with a second tapered roller bearing 8 and a third tapered roller bearing 12. One end of the ball screw 7 is rotatably mounted on the second opening through the second tapered roller bearing 8, and the other end of the ball screw 7 is rotatably connected to the second opening through the third tapered roller bearing 12. On the third opening, the ball screw nut 11 is fixed on the third tapered roller bearing 12 . The second opening and the third opening are provided to facilitate the assembly of the ball screw 7, and the second tapered roller bearing 8 is installed on the second opening, and the third tapered roller bearing 12 is installed on the third opening to withstand the axial Load and radial load, to ensure smooth operation and long service life.

The second opening loam cake 6 is combined with loam cake 6, and the middle part of loam cake 6 has the through hole that passes for ball screw 7, and the third opening loam cake 6 is combined with loam cake 13, and the middle part of loam cake 13 has the through hole for ball screw. The through hole that bar 7 passes through. Casing 9, upper cover 6 plates, and lower cover 13 plates are split design, which facilitates the assembly of ball screw 7.

Due to the height requirements of the lift, the length of the ball screw 7 is usually longer, and it is difficult to process the longer shaft, the cylindricity is not easy to control, and the cost is also high. Therefore, the ball screw 7 is arranged in a separate structure , respectively the upper ball screw 71 and the lower ball screw 72, the two are connected by a connector 10, the connector 10 is located between the second tapered roller bearing 8 and the third tapered roller bearing 12, the upper ball screw 71 Installed in the second opening, the lower ball screw 72 is installed in the third opening. In addition, the ball screw 7 is arranged in a split structure, which reduces weight and facilitates assembly.

Claims (6)

1. A spiral bevel gear ball screw lift, characterized in that it comprises a casing, on which a power input shaft is rotatably installed, and the first end of the power input shaft stretches out of the casing Externally, the second end of the power input shaft is located in the box; The second end is fixedly connected with a spiral bevel gear; A ball screw nut cooperating with the spiral bevel gear is rotatably installed in the box; A ball screw matched with the ball screw nut is rotatably installed in the box. 2. The spiral bevel gear ball screw lift according to claim 1, further comprising a first tapered roller bearing with a bearing housing and an outer ring mounted on the bearing housing, and the housing is provided with The first opening, the bearing seat is fixed on the first opening, and the inner ring of the power input shaft is fixed on the inner ring of the first tapered roller bearing. 3. The spiral bevel gear ball screw lift according to claim 2, wherein an oil seal and a joint cap are installed between the power input shaft and the bearing seat, and the joint cap and the oil seal are separated from each other along the The directions of the first tapered roller bearings are set in sequence. 4. The spiral bevel gear ball screw lift according to claim 1, 2 or 3, wherein a second opening and a third opening are respectively provided on two opposite side walls of the box body, and the second opening A second tapered roller bearing and a third tapered roller bearing are mounted on the second opening and the third opening respectively, and one end of the ball screw is rotatably mounted on the first tapered roller bearing through the second tapered roller bearing. Two openings, the other end of the ball screw is rotatably connected to the third opening through the third tapered roller bearing, and the ball screw nut is fixed on the third tapered roller bearing. 5. The spiral bevel gear ball screw lift according to claim 4, wherein the second opening is covered with an upper cover, and the middle part of the upper cover has a through hole for the ball screw to pass through. The upper cover of the third opening is covered with a lower cover, and the middle part of the lower cover has a through hole for the ball screw to pass through. 6. The spiral bevel gear ball screw lift according to claim 4, wherein the ball screw comprises an upper ball screw and a lower ball screw connected by a connector, and the connector is located at the second Between the second tapered roller bearing and the third tapered roller bearing, the upper ball screw is installed in the second opening, and the lower ball screw is installed in the third opening.