Valve nut tightening wrench
By introducing gear assemblies A and B of the third gear into the valve nut tightening wrench to drive the second gear from both sides, and using wear-resistant rings and ball bearings, the problem of severe wear on the sleeve and gears was solved, extending the service life of the equipment.
Patent Information
- Application Number
- CN202423320747.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-30
AI Technical Summary
The socket and gear of traditional valve nut tightening wrenches wear out severely due to excessive torque, resulting in a short service life.
The No. 2 gear is driven from both sides by No. 3 gear assembly A and No. 3 gear assembly B. Combined with wear-resistant rings and ball bearings, the torque is evenly distributed and wear is reduced.
This improves the service life of sleeves and gears, reduces wear, and extends the service life of the equipment.
Smart Images
Figure CN223671119U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of wrench, concretely is a valve nut tightening wrench. BACKGROUND
[0002] The nut of the valve needs to be tightened with the screw rod, and the traditional nut tightening wrench drives the sleeve through a gear transmission assembly. However, the traditional sleeve is only engaged with one gear, so that the torque borne by the sleeve and each gear is too large, which increases the wear of the sleeve and the gear and reduces the service life.
[0003] Therefore, it is necessary to provide a valve nut tightening wrench. SUMMARY
[0004] The valve nut tightening wrench provided by the utility model effectively solves the problem of short service life of the existing valve tightening wrench.
[0005] The utility model adopts the technical scheme of:
[0006] A valve nut tightening wrench, comprising a lower cover, a sleeve, an upper cover, a bearing seat arranged on the upper cover, a first ball bearing arranged in the bearing seat, a transmission shaft connected with the inner ring of the first ball bearing, a first gear coaxially fixed on the transmission shaft, a gear transmission assembly arranged between the upper cover and the lower cover, the first gear is in transmission connection with the gear transmission assembly, the sleeve comprises a second gear arranged between the upper cover and the lower cover and a cylindrical protrusion coaxially fixed on one end of the second gear and protruding from the upper cover, and the cylindrical protrusion is provided with a key groove. The third gear assembly A and the third gear assembly B are symmetrically arranged on both sides of the connecting line of the axis of the gear transmission assembly and the axis of the second gear, the third gear assembly A is engaged with the gear transmission assembly and the second gear at the same time, and the third gear assembly B is engaged with the gear transmission assembly and the second gear at the same time.
[0007] Further, the gear transmission assembly comprises three connecting shafts, six second ball bearings and three fourth gears arranged in a line and engaged in sequence, the two ends of each connecting shaft are connected with the opposite sides of the upper cover and the lower cover respectively, each connecting shaft is connected with the inner rings of two second ball bearings respectively, and the three fourth gears are coaxially rotationally connected with the three connecting shafts through the second ball bearings.
[0008] Further, a first wear-resistant ring is arranged between the sleeve and the upper cover, and a second wear-resistant ring is arranged between the sleeve and the lower cover.
[0009] Further, a fourth ball bearing is further arranged on the lower cover, and the inner ring of the fourth ball bearing is connected with the transmission shaft.
[0010] Further, the third gear assembly A comprises a third shaft fixedly connected with the upper cover and the lower cover, a third ball bearing with an inner ring fixedly connected with the third shaft, and a third gear connected with an outer ring of the third ball bearing.
[0011] The beneficial effects of the utility model are that the second gear is driven from both sides by the third gear assembly A and the third gear assembly B, so that the second gear is more evenly stressed, and the service life of each sleeve and gear is improved. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 The utility model provides a whole schematic view of valve nut tightening wrench.
[0013] Figure 2 The utility model provides a whole schematic view of valve nut tightening wrench.
[0014] Figure 3 The utility model provides a whole schematic view of valve nut tightening wrench.
[0015] Marked as: 1, lower cover; 2, sleeve; 3, upper cover; 4, bearing seat; 5, first ball bearing; 6, transmission shaft; 7, first gear; 8, gear transmission assembly; 21, second gear; 22, cylindrical convex; 201, key groove; 9, third gear assembly A; 10, third gear assembly B; 801, connecting shaft; 802, second ball bearing; 803, fourth gear; 11, first wear-resistant ring; 12, second wear-resistant ring; 91, third shaft; 92, third ball bearing; 93, third gear; 13, fourth ball bearing. DETAILED DESCRIPTION
[0016] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the specific embodiment of the utility model is described in detail below with reference to the drawings.
[0017] As Figure 1 And Figure 2As shown in the figure, the valve nut tightening wrench provided by the embodiment of the application comprises a lower cover 1, a sleeve 2, an upper cover 3, a bearing seat 4 arranged on the upper cover 3, a first ball bearing 5 arranged in the bearing seat 4, a transmission shaft 6 connected with the inner ring of the first ball bearing 5, a first gear 7 coaxially and fixedly arranged on the transmission shaft 6, a gear transmission assembly 8 arranged between the upper cover 3 and the lower cover 1, the first gear 7 is in transmission connection with the gear transmission assembly 8, the sleeve 2 comprises a second gear 21 arranged between the upper cover 3 and the lower cover 1 and a cylindrical protrusion 22 coaxially and fixedly arranged at one end of the second gear 21 and protruding from the upper cover 3, the cylindrical protrusion 22 is provided with a key groove 201. It also comprises a third gear 93A assembly A 9 and a third gear 93B which are the same in structure, the third gear 93A assembly A 9 and the third gear 93B are symmetrically arranged on both sides of the line connecting the axis of the gear transmission assembly 8 and the axis of the second gear 21, the third gear 93A assembly A 9 is in meshing with the gear transmission assembly 8 and the second gear 21 at the same time, and the third gear 93B is in meshing with the gear transmission assembly 8 and the second gear 21 at the same time. The second gear 21 is provided with an avoidance through hole for avoiding the screw rod connected with the nut.
[0018] In actual use, the nut is limited by the key groove 201 and the cylindrical protrusion 22. Through the rotation of the transmission shaft 6, the first gear 7 is driven to rotate synchronously, and then the gear transmission assembly 8 is driven to rotate, and then the third gear 93A assembly A 9 and the third gear 93B are driven to rotate synchronously through the gear transmission assembly 8, so that the third gear 93A assembly A 9 and the third gear 93B drive the second gear 21 to mesh in and out at the same time, so that the second gear 21 drives the cylindrical protrusion 22 to rotate synchronously, thereby driving the nut to rotate.
[0019] In the above design, the third gear 93A assembly A 9 and the third gear 93B drive the second gear 21 from both sides at the same time, so that the second gear 21 is more evenly stressed, and the service life of each gear is improved.
[0020] Specifically, as shown in the figures, Figure 2 and Figure 3 The gear transmission assembly 8 comprises three connecting shafts 801, six second ball bearings 802 and three fourth gears 803 arranged in line and meshed in turn, the two ends of each connecting shaft 801 are connected with the opposite sides of the upper cover 3 and the lower cover 1 respectively, each connecting shaft 801 is connected with the inner rings of two second ball bearings 802 respectively, and the three fourth gears 803 are coaxially and rotationally connected with the three connecting shafts 801 through the second ball bearings 802. The fourth gear 803 close to the transmission shaft 6 is in meshing with the first gear 7, and the fourth gear 803 close to the sleeve 2 is in meshing with the third gear 93A assembly A 9 and the third gear 93B at the same time.
[0021] In actual use, the entire gear transmission assembly 8 is driven by the meshing of adjacent fourth gears 803.
[0022] In the above design, the structural design and specific implementation of the gear transmission assembly 8 can effectively achieve stable transmission.
[0023] Specifically: such as Figure 2 As shown, a first wear-resistant ring 11 is provided between the sleeve 2 and the upper cover 3, and a second wear-resistant ring 12 is provided between the sleeve 2 and the lower cover 1.
[0024] In actual use, during the rotation of sleeve 2, the first wear-resistant ring 11 and the second wear-resistant ring 12 come into contact with the outer wall of sleeve 2.
[0025] In the above design, the structural design and specific implementation of the first wear-resistant ring 11 and the second wear-resistant ring 12 can effectively protect the sleeve 2.
[0026] Specifically: such as Figure 3 As shown, a No. 4 ball bearing 13 is also provided on the lower cover 1, and the inner ring of the No. 4 ball bearing 13 is connected to the drive shaft 6.
[0027] In actual use, the drive shaft 6 is rotatably connected to the lower cover 1 via ball bearing 13.
[0028] In the above design, the design and specific implementation of the No. 4 ball bearing 13 can effectively reduce friction on the transmission shaft 6 during rotation.
[0029] Specifically: such as Figure 2 and Figure 3 As shown, the No. 3 gear 93 assembly A9 includes a No. 3 shaft 91 that is fixedly connected to the upper cover 3 and the lower cover 1 at both ends, a No. 3 ball bearing 92 whose inner ring is fixedly connected to the No. 3 shaft 91, and a No. 3 gear 93 connected to the outer ring of the No. 3 ball bearing 92.
[0030] In actual use, gear 93 is driven to rotate by gear transmission assembly 8, and during the rotation, it drives the outer ring of ball bearing 92 to rotate synchronously.
[0031] In the above design, the structural design and specific implementation of the No. 3 gear 93 component A9 can effectively drive the No. 2 gear 21.
[0032] In further detail, it should be understood that the above description is only a specific embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A valve nut tightening wrench, comprising a lower cover (1), a sleeve (2), an upper cover (3), a bearing seat (4) disposed on the upper cover (3), a first ball bearing (5) disposed in the bearing seat (4), a drive shaft (6) connected to the inner ring of the first ball bearing (5), a first gear (7) coaxially fixed on the drive shaft (6), and a gear transmission assembly (8) disposed between the upper cover (3) and the lower cover (1), wherein the first gear (7) is connected to the gear transmission assembly (8) in a transmission connection, the sleeve (2) comprising a second gear (21) disposed between the upper cover (3) and the lower cover (1) and a cylindrical protrusion (22) coaxially fixed to one end of the second gear (21) and protruding from the upper cover (3), wherein the cylindrical protrusion (22) is provided with a keyway (201), characterized in that: Also included are structure same No. 3 gear assembly A (9) and No. 3 gear assembly B (10), the No. 3 gear assembly A (9) and No. 3 gear assembly B (10) are symmetrically arranged at the two sides of the connecting line of the axis of the gear transmission assembly (8) and the axis of No. 2 gear (21), the No. 3 gear assembly A (9) is engaged with the gear transmission assembly (8) and No. 2 gear (21) simultaneously, the No. 3 gear assembly B (10) is engaged with the gear transmission assembly (8) and No. 2 gear (21) simultaneously.
2. The valve nut tightening wrench of claim 1, wherein: The gear transmission assembly (8) includes three connecting shafts (801), six No. 2 ball bearings (802) and three linearly arranged and sequentially engaged No. 4 gears (803), the two ends of each connecting shaft (801) are connected with the opposite side of the upper cover (3) and the lower cover (1), each connecting shaft (801) is connected with the inner ring of two No. 2 ball bearings (802), and the three No. 4 gears (803) are coaxially rotatably connected with the three connecting shafts (801) through the No. 2 ball bearings (802).
3. The valve nut tightening wrench of claim 1, wherein: A No. 1 wear-resistant ring (11) is arranged between the sleeve (2) and the upper cover (3), and a No. 2 wear-resistant ring (12) is arranged between the sleeve (2) and the lower cover (1).
4. The valve nut tightening wrench of claim 1, wherein: A No. 4 ball bearing (13) is further arranged on the lower cover (1), and the inner ring of the No. 4 ball bearing (13) is connected with the transmission shaft (6).
5. The valve nut tightening wrench of claim 1, wherein: The No. 3 gear assembly A (9) includes a No. 3 shaft (91) fixedly connected with the upper cover (3) and the lower cover (1) at both ends, a No. 3 ball bearing (92) with the inner ring fixedly connected with the No. 3 shaft (91), and a No. 3 gear (93) connected with the outer ring of the No. 3 ball bearing (92).