CN215928570U

CN215928570U - Large-torque self-locking valve worm gear box

Info

Publication number: CN215928570U
Application number: CN202122362983.1U
Authority: CN
Inventors: 黄正通; 郑中华; 金欣欣; 唐翔翔
Original assignee: Zhejiang Xunjie Transmission Technology Co ltd
Current assignee: Zhejiang Xunjie Transmission Technology Co ltd
Priority date: 2021-09-28
Filing date: 2021-09-28
Publication date: 2022-03-01
Anticipated expiration: 2031-09-28

Abstract

The utility model discloses a high-torque self-locking valve worm gear box, which comprises a box body, wherein one side of the box body is provided with an end cover through a first bolt, the end cover is in sealed insertion connection with an opening at one side of the box body, the inner wall of the bottom of the box body is rotatably connected with a connecting shaft, the outer wall of the connecting shaft is fixedly sleeved with a worm gear, one side of the end cover close to the box body is rotatably connected with a tapered roller bearing, and one side of the end cover close to the tapered roller bearing is provided with an O-shaped ring which is tightly abutted against the tapered roller bearing. Is beneficial to the maintenance of the reduction gearbox.

Description

Large-torque self-locking valve worm gear box

Technical Field

The utility model relates to the technical field of worm gear reduction boxes, in particular to a high-torque self-locking valve worm gear box.

Background

The worm gear reduction box is fully called as a worm gear reduction box or a worm gear reducer and a worm gear reducer, and mainly comprises a worm gear or a gear, a shaft, a bearing, a case and the like, and the worm gear or the gear, the shaft and the bearing are supported by the case, so that the case shell of the reducer has enough hardness to avoid the reduction of transmission quality caused by deformation after loading.

The worm gear reduction box is a driving structure used by a valve, the performance of the worm gear reduction box directly influences the quality of the valve, the valve worm gear box in the prior art does not have a self-locking function, and the valve can rotate due to the touch of slight external force, so that the valve can be automatically opened, and the pipeline leakage is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem that a valve gear box in the prior art does not have self-locking performance, and provides a high-torque self-locking valve worm gear box.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a big moment self-locking type valve worm gear case, includes the box, the end cover is installed through first bolt in one side of box, the sealed grafting of one side opening part of end cover and box, the bottom inner wall of box rotates and is connected with the connecting axle, fixed cover is equipped with the worm wheel on the outer wall of connecting axle, one side that the end cover is close to the box rotates and is connected with tapered roller bearing, one side that the end cover is close to tapered roller bearing is provided with the O type circle of closely conflicting with tapered roller bearing, tapered roller bearing's inner circle fixedly connected with and the single-end worm of worm wheel engaged with, one side of box is provided with and is used for driving single-end worm to carry out pivoted drive assembly, there is the top cap at the top of box through second bolt fixed mounting.

Preferably, the driving assembly comprises a driving shaft fixedly connected with one side of the single-headed worm, one end of the driving shaft extends to the outer side of the box body and is fixedly inserted with a hand wheel, and one side of the hand wheel far away from the driving shaft is fixedly connected with a grab handle.

Preferably, two convex blocks are symmetrically arranged on two sides of the driving shaft, and a groove which is inserted into the two convex blocks is formed in one side, close to the driving shaft, of the hand wheel.

Preferably, a valve position indicator is mounted on the top of the box body through a third bolt.

Preferably, one side of the box body, which is far away from the first bolt, is provided with a hand wheel gland through a fourth bolt in a sealing manner, one side of the hand wheel gland is provided with a through hole, an oil seal framework is fixedly connected in the through hole, and the driving shaft penetrates through the oil seal framework.

Preferably, one side of the box body, which is far away from the single-head worm, is symmetrically connected with two adjusting bolts in a penetrating manner, and one end, which is positioned in the box body, of one adjusting bolt is tightly abutted against one side of the single-head worm.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the valve, the handle is held to drive the hand wheel to rotate, the hand wheel rotates to drive the driving shaft to rotate, the driving shaft rotates to drive the single-headed worm to rotate, the single-headed worm rotates to drive the worm wheel to rotate, the connecting shaft is connected with the valve rod, the connecting shaft is driven to rotate while the worm wheel rotates, the connecting shaft is used for driving the valve rod to rotate, the valve opening and closing effect is achieved, the rotating angle of the valve rod can be known through the valve position indicator arranged at the top of the box body, and the condition of the valve can be better known.

2. According to the utility model, the oil seal framework arranged in the through hole of the hand wheel gland is used for plugging a gap between the driving shaft and the through hole and preventing lubricating oil in the hand wheel from leaking, so that a sealing effect is achieved, the hand wheel is of a detachable structure, the groove is separated from the clamping with the bump by pulling down the hand wheel, the hand wheel is disassembled to change the model of the hand wheel so as to adapt to the preference of a user, and parts in the reduction gearbox are all of a thread fixing structure and can be completely detached, so that the maintenance of the reduction gearbox is more facilitated.

The utility model has simple structure, the connecting shaft can be driven to rotate by rotating the hand wheel, the effect of opening and closing the valve is achieved, the worm wheel cannot rotate by using the single-head worm and the worm wheel in a matching way, the worm wheel has self-locking property, the hand wheel is of a detachable structure, the model of the hand wheel can be replaced according to the preference of the hand wheel, the whole reduction gearbox is easy to detach and install, and the maintenance of the reduction gearbox is facilitated.

Drawings

FIG. 1 is a top cross-sectional view of a high torque self-locking valve worm gear case according to the present invention;

FIG. 2 is a front view of a high torque self-locking valve worm gear case according to the present invention;

FIG. 3 is a top view of a high torque self-locking valve worm gear case according to the present invention;

fig. 4 is an enlarged view of a portion a of a high torque self-locking valve worm gear case according to the present invention.

In the figure: 1. a box body; 2. a worm gear; 3. adjusting the bolt; 4. a first bolt; 5. an end cap; 6. an O-shaped ring; 7. a tapered roller bearing; 8. a single-start worm; 9. a bump; 10. an oil seal framework; 11. a hand wheel gland bush; 12. a connecting shaft; 13. a hand wheel; 14. a handle; 15. a top cover; 16. a second bolt; 17. a valve position indicator; 18. a third bolt; 19. a drive shaft; 20. a groove; 21. and a fourth bolt.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Example one

Referring to fig. 1-4, a high-torque self-locking valve worm gear case, including box 1, end cover 5 is installed through first bolt 4 in one side of box 1, end cover 5 and the sealed grafting of one side opening part of box 1, the bottom inner wall of box 1 rotates and is connected with connecting axle 12, fixed cover is equipped with worm wheel 2 on the outer wall of connecting axle 12, one side that end cover 5 is close to box 1 rotates and is connected with tapered roller bearing 7, one side that end cover 5 is close to tapered roller bearing 7 is provided with O type circle 6 that closely contradicts with tapered roller bearing 7, the inner circle fixedly connected with of tapered roller bearing 7 and the single-end worm 8 that worm wheel 2 meshed, one side of box 1 is provided with and is used for driving single-end worm 8 to carry out pivoted drive assembly, there is top cap 15 at the top of box 1 through second bolt 16 fixed mounting.

Example two

The embodiment is improved on the basis of the first embodiment: referring to fig. 1-4, a high-torque self-locking valve worm gear case comprises a case body 1, a valve position indicator 17 is installed on the top of the case body 1 through a third bolt 18, the rotating angle of a valve rod can be known through the valve position indicator 17 installed on the top of the case body 1, the condition of a valve can be better known, an end cover 5 is installed on one side of the case body 1 through a first bolt 4, the end cover 5 is hermetically inserted into an opening on one side of the case body 1, a connecting shaft 12 is rotatably connected to the inner wall of the bottom of the case body 1, a worm gear 2 is fixedly sleeved on the outer wall of the connecting shaft 12, a tapered roller bearing 7 is rotatably connected to one side of the end cover 5 close to the case body 1, an O-shaped ring 6 closely abutted against the tapered roller bearing 7 is arranged on one side of the end cover 5 close to the tapered roller bearing 7, a single-end worm 8 meshed with the worm gear 2 is fixedly connected to the inner ring of the tapered roller bearing 7, one side of the box body 1, which is far away from the single-head worm 8, is symmetrically and threadedly connected with two adjusting bolts 3, one end of one adjusting bolt 3, which is positioned in the box body 1, is tightly abutted against one side of the single-head worm 8, one side of the box body 1 is provided with a driving assembly for driving the single-head worm 8 to rotate, the driving assembly comprises a driving shaft 19 fixedly connected with one side of the single-head worm 8, one side of the box body 1, which is far away from the first bolt 4, is hermetically provided with a hand wheel gland 11 through a fourth bolt 21, one side of the hand wheel gland 11 is provided with a through hole, an oil seal framework 10 is fixedly connected in the through hole, the driving shaft 19 penetrates through the oil seal framework 10, the oil seal framework 10 arranged in the through hole of the hand wheel gland 11 is used for plugging a gap between the driving shaft 19 and the through hole to prevent lubricating oil inside from leaking, the sealing effect is achieved, and two convex blocks 9 are symmetrically arranged on two sides of the driving shaft 19, a groove 20 which is inserted with the two convex blocks 9 is arranged on one side of the hand wheel 13 which is close to the driving shaft 19, the hand wheel 13 is a detachable structure, the groove 20 is separated from the clamping with the convex block 9 by pulling down the hand wheel 13, the hand wheel 13 is disassembled to change the model of the hand wheel 13 so as to adapt to the favor of a user, one end of the driving shaft 19 extends to the outer side of the box body 1 and is fixedly inserted with the hand wheel 13, one side of the hand wheel 13 far away from the driving shaft 19 is fixedly connected with a holding handle 14, the holding handle 14 is held to drive the hand wheel 13 to rotate, the hand wheel 13 rotates to drive the driving shaft 19 to rotate, the driving shaft 19 rotates to drive the single-head worm 8 to rotate, the single-head worm 8 rotates to drive the worm wheel 2 to rotate, the connecting shaft 12 is connected with the valve rod, thereby drive connecting axle 12 and rotate when worm wheel 2 rotates, use connecting axle 12 to drive the valve rod and rotate, reach the effect of ooff valve, there is top cap 15 at the top of box 1 through second bolt 16 fixed mounting.

The working principle is as follows: the handle 14 is held to drive the hand wheel 13 to rotate, the hand wheel 13 rotates to drive the driving shaft 19 to rotate, the driving shaft 19 rotates to drive the single-end worm 8 to rotate, the single-end worm 8 rotates to drive the worm wheel 2 to rotate, the connecting shaft 12 is connected with the valve rod, the connecting shaft 12 is driven to rotate while the worm wheel 2 rotates, the valve rod is driven to rotate by using the connecting shaft 12 to achieve the effect of opening and closing the valve, the rotating angle of the valve rod can be known through a valve position indicator 17 arranged at the top of the box body 1, the condition of the valve can be better known, an oil seal framework 10 is arranged in a through hole of the hand wheel gland 11 and is used for sealing a gap between the driving shaft 19 and the through hole and preventing lubricating oil inside from leaking, the sealing effect is achieved, the hand wheel 13 is of a detachable structure, the groove 20 is separated from being clamped with the bump 9 by pulling down the hand wheel 13, the model of the hand wheel 13 is detached, adapt to user's hobby to the part in the reducing gear box is thread fixing structure, and is whole to dismantle, more is favorable to the maintenance to the reducing gear box.

However, as is well known to those skilled in the art, the working principle and wiring method of the valve position indicator 17 are common and are conventional means or common knowledge, and will not be described herein, and those skilled in the art can make any selection according to their needs or convenience.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The high-torque self-locking valve worm gear box comprises a box body (1) and is characterized in that an end cover (5) is installed on one side of the box body (1) through a first bolt (4), the end cover (5) is in sealed insertion connection with an opening on one side of the box body (1), a connecting shaft (12) is rotatably connected to the inner wall of the bottom of the box body (1), a worm gear (2) is fixedly sleeved on the outer wall of the connecting shaft (12), a tapered roller bearing (7) is rotatably connected to one side, close to the box body (1), of the end cover (5), an O-shaped ring (6) tightly abutted against the tapered roller bearing (7) is arranged on one side, close to the tapered roller bearing (7), a single-head worm (8) meshed with the worm gear (2) is fixedly connected to the inner ring of the tapered roller bearing (7), and a driving assembly for driving the single-head worm (8) to rotate is arranged on one side of the box body (1), and a top cover (15) is fixedly arranged at the top of the box body (1) through a second bolt (16).

2. The high-torque self-locking valve worm-gear box is characterized in that the driving assembly comprises a driving shaft (19) fixedly connected with one side of the single-head worm (8), one end of the driving shaft (19) extends to the outer side of the box body (1) and is fixedly connected with a hand wheel (13) in an inserted mode, and a grab handle (14) is fixedly connected to one side, far away from the driving shaft (19), of the hand wheel (13).

3. The high-torque self-locking valve worm gear box according to claim 2, wherein two protrusions (9) are symmetrically arranged on two sides of the driving shaft (19), and a groove (20) which is inserted into the two protrusions (9) is formed in one side of the hand wheel (13) close to the driving shaft (19).

4. A high torque self-locking valve worm gear case according to claim 1, characterized in that the valve position indicator (17) is mounted on the top of the case (1) by a third bolt (18).

5. The high-torque self-locking valve worm-gear case according to claim 2, wherein a hand wheel gland (11) is hermetically mounted on one side of the case body (1) far away from the first bolt (4) through a fourth bolt (21), a through hole is formed in one side of the hand wheel gland (11), an oil seal framework (10) is fixedly connected in the through hole, and the driving shaft (19) penetrates through the oil seal framework (10).

6. The high-torque self-locking valve worm-gear box according to claim 1, characterized in that two adjusting bolts (3) are symmetrically and penetratingly connected to one side of the box body (1) far away from the single-headed worm (8), and one end of one of the adjusting bolts (3) in the box body (1) is tightly abutted to one side of the single-headed worm (8).