CN216699721U

CN216699721U - Screw driving device

Info

Publication number: CN216699721U
Application number: CN202221088080.7U
Authority: CN
Inventors: 唐博; 杨世宽
Original assignee: Shenyang Xinchuangyuan Mechanical Equipment Manufacturing Co ltd
Current assignee: Shenyang Xintong Power Station Equipment Manufacturing Co ltd
Priority date: 2022-05-09
Filing date: 2022-05-09
Publication date: 2022-06-07
Anticipated expiration: 2032-05-09

Abstract

The utility model relates to a lead screw driving device, which comprises a driving motor, a rotating shaft, a box body, a transmission gear set, a hollow shaft, a nut, a lead screw and a lead screw adapter, wherein the driving motor is connected with the rotating shaft; the box body comprises a main box body and a cover plate, a cavity is formed in the main box body, the cover plate is fixed above the main box body, the driving motor is installed below the main box body, and a driving gear is arranged on an output shaft of the driving motor and connected with the transmission gear set. The utility model simplifies the structure, improves the transmission efficiency of the driving device, avoids the adoption of a traditional chain mechanism, reduces the noise of equipment, reduces wearing parts in the original driving structure, is convenient to maintain, prolongs the maintenance period, prolongs the service life, and reduces the manufacturing and later maintenance costs.

Description

Screw driving device

Technical Field

The utility model relates to the technical field of smoke dust collecting devices, in particular to a screw rod driving device.

Background

In a workshop of an electrolytic aluminum plant, an anode carbon block is applied in the production process of electrolytic aluminum, various harmful gases and dust such as hydrogen fluoride, asphalt smoke and the like can be generated in the process of taking out the residual part of the anode carbon block, the residual carbon block can be transported to a professional recovery site after the harmful gases and the dust are discharged, and the harmful gases and the dust are recycled by professional equipment in the process of discharging the harmful gases and the dust from the carbon block so as to avoid polluting the atmospheric environment and causing unnecessary damage. Receive factory building structural design's restriction, need collect the cover with recovery plant's smoke and dust during the non-operating condition and receive the bearing stand column space vacant position of factory building, consequently the smoke and dust is collected the cover and is adopted convertible structural design so that save space, drive arrangement in the past is for satisfying the arrangement requirement of driving motor axis and lead screw axis decentraction, adopt the motor to drive the speed reducer and solve the requirement of axis decentraction through chain mechanism, chain mechanism transmission efficiency is low, the pitch of making a noise, it is big to maintain the maintenance volume in the use.

Disclosure of Invention

In order to solve the above-mentioned technical problems, an object of the present invention is to provide a screw driving device.

The above object of the present invention is achieved by the following technical solutions: a lead screw driving device comprises a driving motor, a rotating shaft, a box body, a transmission gear set, a hollow shaft, a nut, a lead screw and a lead screw adapter; the box body comprises a main box body and a cover plate, a cavity is arranged in the main box body, the cover plate is fixed above the main box body, the driving motor is arranged below the main box body, a driving gear is arranged on an output shaft of the driving motor and is connected with a transmission gear set, the driving gear and the transmission gear set are both arranged in the cavity in the main box body, through holes are respectively arranged at the corresponding positions of the lower surfaces of the cover plate and the main box body, a first connecting flange is arranged at the through hole of the cover plate, a second connecting flange is arranged at the through hole of the main box body, a hollow shaft sequentially penetrates through the first connecting flange, the transmission gear set and the second connecting flange along the vertical direction, a first bearing and a second bearing are respectively sleeved outside the hollow shaft, the first bearing is arranged in the first connecting flange, the second bearing is arranged in the second connecting flange, and the hollow shaft is in key connection with the transmission gear set, the lead screw is arranged in the hollow shaft along the vertical direction and is coaxial with the hollow shaft, the length of the lead screw is longer than that of the hollow shaft, the top end of the lead screw is higher than that of the hollow shaft, a nut is fixed on the inner circumferential surface of the top end of the hollow shaft, the nut is sleeved outside the lead screw, the lead screw and the nut are matched to form a lead screw transmission pair, a driving motor drives a driving gear to rotate, so that the driving gear set, the hollow shaft and the nut are driven to rotate together, the lead screw moves up and down along the nut, a lead screw adapter is arranged at the top end of the lead screw, the left end face and the right end face of the main box body are respectively and fixedly connected with a rotating shaft, and the two rotating shafts are coaxially arranged;

and a third connecting flange is arranged below the second connecting flange, the tail end of the hollow shaft is arranged in the third connecting flange, a sealing ring is arranged between the outer peripheral surface of the tail end of the hollow shaft and the inner peripheral surface of the third connecting flange, a fourth connecting flange is arranged below the third connecting flange, a lead screw tail dust cover is fixed below the fourth connecting flange in a welding mode, and the lead screw moves up and down in the lead screw tail dust cover.

Furthermore, the screw rod and the screw rod adapter are connected in a thread or key mode and then fixed by a set screw.

Further, be equipped with scalable dust cover in the upper end outside of hollow shaft, the upper end of scalable dust cover is connected with screw rod adapter, and the lower extreme is connected with first connecting flange, and scalable dust cover is along the tensile or compression reciprocating motion of vertical direction along with the lead screw.

Furthermore, the telescopic dust cover is made of fireproof and high-temperature-resistant materials.

Further, the dust cover at the tail part of the lead screw is made of rigid pipe fittings.

Further, the transmission gear group includes gear shaft, first gear, the teeth of a cogwheel, transmission shaft, second gear and third gear, is connected through the third bearing between the bottom of gear shaft and the main tank body, is connected through the fourth bearing between top and the main tank body the cover is equipped with first gear on the gear shaft, and first gear is located the teeth of a cogwheel below of taking certainly on the gear shaft, first gear with drive gear meshing, the teeth of a cogwheel and the second gear meshing of gear shaft are equipped with the transmission shaft along the vertical direction in the second gear is inside, is connected through the fifth bearing between the top of transmission shaft and the main tank body, is connected through the sixth bearing between the bottom of transmission shaft and the main tank body, second gear and third gear meshing, the hollow shaft runs through the inside and through the key-type connection of third gear along the vertical direction.

Compared with the prior art, the utility model has the beneficial effects that: the utility model simplifies the structure, improves the transmission efficiency of the driving device, avoids the adoption of a traditional chain mechanism, reduces the noise of equipment, reduces wearing parts in the original driving structure, is convenient to maintain, prolongs the maintenance period, prolongs the service life, and reduces the manufacturing and later maintenance costs.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the utility model without limiting the utility model.

FIG. 1 is a schematic sectional view of a screw driving device according to the present invention;

FIG. 2 is a left side view of FIG. 1;

in the figure: 1. the driving motor, 2, a rotating shaft, 31, a main box body, 32, a cover plate, 4, a driving gear, 5, a transmission gear set, 51, a gear shaft, 52, a first gear, 53, a third bearing, 54, gear teeth, 55, a fourth bearing, 56, a second gear, 57, a transmission shaft, 58, a fifth bearing, 59, a sixth bearing, 510, a third gear, 6, a hollow shaft, 7, a screw nut, 8, a lead screw, 9, a set screw, 10, a lead screw adapter, 11, a lead screw tail dust cover, 12, a telescopic dust cover, 13, a first connecting flange, 14, a second connecting flange, 15, a third connecting flange, 16, a fourth connecting flange, 17, a first bearing, 18 and a second bearing.

Detailed Description

As shown in fig. 1-2, a lead screw driving device includes a driving motor 1, a rotating shaft 2, a box, a transmission gear set 5, a hollow shaft 6, a nut 7, a lead screw 8, and a lead screw adapter 10; the box body comprises a main box body 31 and a cover plate 32, a cavity is arranged in the main box body 31, the cover plate 32 is fixed above the main box body 31, the driving motor 1 is arranged below the main box body 31, a driving gear 4 is arranged on an output shaft of the driving motor 1, the driving gear 4 is connected with a transmission gear set 5, the driving gear 4 and the transmission gear set 5 are both arranged in the cavity in the main box body 31, through holes are respectively arranged at corresponding positions of the lower surfaces of the cover plate 32 and the main box body 31, a first connecting flange 13 is arranged at the through hole of the cover plate 32, a second connecting flange 14 is arranged at the through hole of the main box body 31, the hollow shaft 6 sequentially penetrates through the first connecting flange 13, the transmission gear set 5 and the second connecting flange 14 along the vertical direction, a first bearing 17 and a second bearing 18 are respectively sleeved outside the hollow shaft 6, and the first bearing 17 is arranged in the first connecting flange 13, the second bearing 18 is arranged in the second connecting flange 14, the hollow shaft 6 is in key connection with the transmission gear set 5, the lead screw 8 is arranged inside the hollow shaft 6 along the vertical direction and is coaxial with the hollow shaft 6, the length of the lead screw 8 is longer than that of the hollow shaft 6, the top end of the lead screw 8 is higher than that of the hollow shaft 6, a nut 7 is fixed on the inner circumferential surface of the top end of the hollow shaft 6, the nut 7 is sleeved outside the lead screw 8, the lead screw 8 and the nut 7 are matched to form a lead screw transmission pair, the driving motor 1 drives the driving gear 4 to rotate so as to drive the transmission gear set 5, the hollow shaft 6 and the nut 7 to rotate together, the lead screw 8 moves up and down along the nut 7, a lead screw adapter 10 is arranged at the top end of the lead screw 8, the left end face and the right end face of the main box body 31 are respectively and fixedly connected with one rotating shaft 2, and the two rotating shafts 2 are coaxial;

a third connecting flange 15 is installed below the second connecting flange 14, the end of the hollow shaft 6 is arranged in the third connecting flange 15, a sealing ring is installed between the outer peripheral surface of the end of the hollow shaft 6 and the inner peripheral surface of the third connecting flange 15, a fourth connecting flange 16 is installed below the third connecting flange 15, a lead screw tail dust cover 11 is fixed below the fourth connecting flange 16 in a welding mode, and the lead screw 8 moves up and down in the lead screw tail dust cover 11. The screw rod 8 is connected with the screw rod adapter 10 in a threaded or key mode and then fixed through the set screw 9.

The outer portion of the upper end of the hollow shaft 6 is provided with a telescopic dust cover 12, the upper end of the telescopic dust cover 12 is connected with the screw rod adapter 10, the lower end of the telescopic dust cover is connected with the first connecting flange 13, and the telescopic dust cover 12 stretches or compresses in a reciprocating mode along the vertical direction along with the screw rod 8.

The retractable dust cover 12 is made of fireproof and high-temperature resistant material.

The dust cover 11 at the tail part of the screw rod is made of rigid pipe fittings, and has the function of sealing and protecting the screw rod 8.

The transmission gear set comprises a gear shaft 51, a first gear 52, gear teeth 54, a transmission shaft 57, a second gear 56 and a third gear 510, the bottom end of the gear shaft 51 is connected with the main box 31 through a third bearing 53, the top end of the gear shaft is connected with the main box 31 through a fourth bearing 55, a first gear 52 is sleeved on the gear shaft 51, the first gear 52 is positioned below the gear teeth 54 on the gear shaft 51, the first gear 52 is meshed with the driving gear 4, the gear teeth 54 of the gear shaft 51 are meshed with a second gear 56, a transmission shaft 57 is vertically provided inside the second gear 56, a top end of the transmission shaft 57 is connected to the main casing 31 by a fifth bearing 58, a bottom end of the transmission shaft 57 is connected to the main casing 31 by a sixth bearing 59, the second gear 56 is engaged with a third gear 510, and the hollow shaft 6 penetrates the inside of the third gear 510 in the vertical direction and is keyed.

The telescopic dust cover 12 and the dust cover 11 at the tail part of the screw rod are adopted, so that the situation that the resistance is increased due to the fact that dust enters the screw rod 8 and the screw nut 7 can be avoided.

The hollow shaft 6 is used for bearing a lead screw 8, the hollow shaft 6 provides driving torque for a nut 7 and can limit axial displacement of the nut 7, the nut 7 rotates around the axial direction and provides the driving torque for the lead screw 8, a lead screw adapter 10 is used for limiting radial freedom degree of the lead screw 8 and providing an interface with connected equipment, the lead screw 8 is driven to rotate by the nut 7 and is limited by the lead screw adapter 10 to convert the radial rotation of the lead screw 8 into reciprocating motion in the axial direction, and the lead screw 8 can adopt various forms such as a ball screw, a T-shaped lead screw, a threaded lead screw and the like according to lead and strength requirements.

The lead screw 8 can reciprocate up and down along the vertical direction, the lead screw driving device is arranged on the smoke dust collecting device frame body through two rotating shafts 2, the rotating shafts 2 are rotatably connected with the frame body, the lead screw driving device realizes swinging on the smoke dust collecting device frame body through the rotating shafts 2, and the arrangement requirement that the axis of the driving motor 1 is not concentric with the axis of the lead screw 8 is met. The running direction of the screw 8 is controlled by the rotating direction of the driving motor 1, and the driving motor 1 can be controlled manually or by a PLC control system according to actual requirements. The internal parts of the lead screw driving device are of a closed structure, and thin oil is filled in a main box body of the lead screw driving device for lubrication or grease is coated on the surface of a transmission gear set for lubrication.

The above description is only a preferred example of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made to the present invention shall fall within the protection scope of the present invention.

Claims

1. A lead screw driving device is characterized by comprising a driving motor, a rotating shaft, a box body, a transmission gear set, a hollow shaft, a nut, a lead screw and a lead screw adapter; the box body comprises a main box body and a cover plate, a cavity is arranged in the main box body, the cover plate is fixed above the main box body, the driving motor is arranged below the main box body, a driving gear is arranged on an output shaft of the driving motor and is connected with a transmission gear set, the driving gear and the transmission gear set are both arranged in the cavity in the main box body, through holes are respectively arranged at the corresponding positions of the lower surfaces of the cover plate and the main box body, a first connecting flange is arranged at the through hole of the cover plate, a second connecting flange is arranged at the through hole of the main box body, a hollow shaft sequentially penetrates through the first connecting flange, the transmission gear set and the second connecting flange along the vertical direction, a first bearing and a second bearing are respectively sleeved outside the hollow shaft, the first bearing is arranged in the first connecting flange, the second bearing is arranged in the second connecting flange, and the hollow shaft is in key connection with the transmission gear set, the lead screw is arranged in the hollow shaft along the vertical direction and is coaxial with the hollow shaft, the length of the lead screw is longer than that of the hollow shaft, the top end of the lead screw is higher than that of the hollow shaft, a nut is fixed on the inner circumferential surface of the top end of the hollow shaft, the nut is sleeved outside the lead screw, the lead screw and the nut are matched to form a lead screw transmission pair, a driving motor drives a driving gear to rotate, so that the driving gear set, the hollow shaft and the nut are driven to rotate together, the lead screw moves up and down along the nut, a lead screw adapter is arranged at the top end of the lead screw, the left end face and the right end face of the main box body are respectively and fixedly connected with a rotating shaft, and the two rotating shafts are coaxially arranged;

2. The screw drive of claim 1, wherein the screw is secured to the screw adapter by a set screw after being threadably or keyed to the screw adapter.

3. A lead screw drive as claimed in claim 1, wherein a retractable dust cover is provided on the exterior of the upper end of the hollow shaft, the retractable dust cover being connected at its upper end to the lead screw adapter and at its lower end to the first connecting flange, the retractable dust cover reciprocating with the lead screw in a vertical direction in extension or compression.

4. A lead screw drive as set forth in claim 3, wherein said retractable dust cover is made of a fire-resistant and high temperature resistant material.

5. The screw drive of claim 1, wherein the boot is made of rigid tubing.

6. The screw driving device according to claim 1, wherein the transmission gear set comprises a gear shaft, a first gear, gear teeth, a transmission shaft, a second gear and a third gear, a bottom end of the gear shaft is connected with the main housing through a third bearing, a top end of the gear shaft is connected with the main housing through a fourth bearing, a first gear is sleeved on the gear shaft and is positioned below the gear teeth on the gear shaft, the first gear is meshed with the driving gear, the gear teeth of the gear shaft are meshed with the second gear, a transmission shaft is arranged in the second gear along the vertical direction, the top end of the transmission shaft is connected with the main box body through a fifth bearing, the bottom end of the transmission shaft is connected with the main box body through a sixth bearing, the second gear is meshed with the third gear, and the hollow shaft penetrates through the inside of the third gear in the vertical direction and is in key connection with the third gear through the hollow shaft.