CN204976477U - Automatic spanner is curved dual -purpose joint directly - Google Patents

Abstract

The utility model discloses a straight-bending dual-purpose joint of an automatic wrench, which comprises a fixed shell and a tightening sleeve. The fixed shell has an opening, and an intermediate shaft is installed inside. The side meshes with the connecting bevel gear with an intermediate bevel gear and a transmission bevel gear. The non-gear end of the intermediate bevel gear is connected to the inner wall of the fixed housing through a bearing. The front part of the non-gear end of the transmission bevel gear is fixed with the tightening sleeve. The middle part of the end is connected with a rotary housing through a bearing. The rotary housing covers the fixed housing and is slidably connected with the fixed housing through an intermediate shaft. The utility model adopts the gear transmission and the rotatable tightening sleeve, realizes the use of the automatic wrench in two directions, reduces the labor intensity of the workers when the bolt is connected in the upward tightening direction, and provides convenience for mechanical installation.

Description

An automatic wrench straight-bend dual-purpose joint

technical field

The utility model belongs to the technical field of mechanical installation tools, in particular to an automatic wrench straight-bending dual-purpose joint.

Background technique

At present, with the advancement of science and technology and the development of the machinery industry, the assembly process of many mechanical and electrical equipment is becoming more and more automated or semi-automated, and the use of electric or pneumatic automatic wrenches greatly reduces the operation. The labor intensity of workers has been widely used. But the extension axis of present automatic wrench is mostly on a straight line with the gun body, so that automatic wrench can only apply feed force towards the front like this. On the installation and assembly line of machinery and electrical equipment, some bolts or screws must be tightened from bottom to top, and automatic wrenches need to be used upwards. If the installation and operation space is large enough, there is no problem. For the bolt or screw installation at the lower position or bottom of the machine, since the installed machine cannot be lifted to a higher position, at this time, due to the limited installation space, it will cause great difficulties for the operator, resulting in high labor intensity and easy fatigue.

Utility model content

In order to use the automatic wrench to install bolts or screws with various tightening directions conveniently, the utility model provides a dual-purpose straight and bent joint of the automatic wrench, so that the automatic wrench can apply feeding force in two directions perpendicular to each other.

In order to achieve the above object, the technical scheme that the utility model takes is as follows:

An automatic wrench straight-bend dual-purpose joint, including a fixed shell and a tightening sleeve, the head of the tightening sleeve is hexagonal, wherein: the lower part of the fixed shell is cylindrical, and the upper part is hollow spherical. There is an opening from the spherical top to the right side, and an intermediate shaft is installed through the center of the sphere. Hexagonal, the left and right sides of the intermediate shaft mesh with the connecting bevel gear with an intermediate bevel gear and a transmission bevel gear. The center lines of the intermediate bevel gear and the transmission bevel gear are both perpendicular to the center line of the central shaft. The non-gear end is connected to the inner wall of the fixed housing through bearings, and the non-gear end of the transmission bevel gear is a stepped shaft. The stepped shaft includes a front shaft and a middle shaft, and the front shaft is fixedly connected with the tightening sleeve. The rotary shell covers the fixed shell and is slidingly connected with the fixed shell through the intermediate shaft. The rotary shell includes the rotary shell tail cover and the transmission connection sleeve. The transmission connection sleeve is connected with the middle shaft through the bearing, and the rotary housing tail cover Covering the opening, the left end of the tail cover of the revolving housing is clamped with the fixed housing through the positioning marble, and the fixed housing is provided with a groove that cooperates with the positioning marble.

Preferably, the sub-cone angle of the connecting bevel gear is 45 degrees, and the diameter of the dedendum circle of the front cone surface is larger than the diameter of the intermediate shaft.

Preferably, the sub-cone angle of the intermediate bevel gear is 45 degrees, the intersecting angle with the shaft of the connecting bevel gear is 90 degrees, and the diameter of the dedendum circle of the front bevel surface is larger than the diameter of the intermediate shaft.

Preferably, the sub-cone angle of the transmission bevel gear is 45 degrees, the intersecting angle with the shaft of the coupling bevel gear is 90 degrees, and the diameter of the dedendum circle of the front bevel surface is larger than the diameter of the intermediate shaft.

Preferably, the transmission connection sleeve is cylindrical, and the right end is connected to the tail of the tightening sleeve.

Preferably, the bearing between the transmission connection sleeve and the middle shaft is a needle bearing.

Preferably, the width of the opening is the diameter of the transmission connection sleeve.

Further, the shape of the opening is the track shape of the transmission connecting sleeve turning 90 degrees from the right side to the top on the spherical surface of the fixed housing.

Preferably, the positioning pinballs are pinball screws.

The beneficial effects of the utility model:

The straight and curved dual-purpose joint described in the utility model realizes the rotatable tightening of the casing through gear transmission, and then enables the automatic wrench to be used in two directions perpendicular to each other, especially solving the bolt connection of the worker in the upward tightening direction time-consuming labor-intensive problems. At the same time, the tightening sleeve described in the utility model can be replaced according to installation needs, so that the application range of the automatic wrench straight-bend dual-purpose joint described in the utility model is wider, and it provides convenience for mechanical installation.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the automatic wrench straight-bend dual-purpose joint described in the utility model;

Fig. 2 is a schematic diagram of a 90-degree rotation of the straight-bend dual-purpose joint of the automatic wrench described in the present invention.

detailed description

As shown in Figure 1, an automatic wrench straight-bending dual-purpose joint is provided with a fixed housing 2, the lower part of which is cylindrical, the upper part is hollow spherical, and there is an opening 10 from the top of the spherical shape to the right side. Intermediate shaft 17, said intermediate shaft 17 is horizontal and perpendicular to the transverse direction, below the intermediate shaft 17 is provided with a connecting bevel gear 3 along the central axis of the fixed housing 2, the non-gear end of the lower part of the connecting bevel gear 3 is an outer hexagon, and the middle The left and right sides of shaft 17 are meshed with connecting bevel gear 3 with intermediate bevel gear 15 and transmission bevel gear 11. The gear end is a stepped shaft. The stepped shaft includes a front shaft 6 and a middle shaft 7. The front shaft 6 is fixed with a tightening sleeve 5 through a set screw 4. The end of the tightening sleeve 5 is an inner hexagon, and the middle shaft 7 At the opening 10, a rotary housing 9 is connected through a bearing 8. The rotary housing 9 covers the fixed housing 2 and is slidably connected with the fixed housing 2 through an intermediate shaft 17. The rotary housing 9 includes a rotary housing tail cover 12 and The transmission connection sleeve 13, the transmission connection sleeve 13 is the connection part between the rotary housing 9 and the bearing 8, the rotary housing tail cover 12 covers the opening 10, and the left end of the rotary housing tail cover 10 passes through the positioning marble 13 and the fixed housing 2 Clamping, the fixed housing 2 is provided with a groove that cooperates with the positioning marble 14 . When using the automatic wrench straight-bending dual-purpose joint, first insert the outer hexagonal bolt head part of the non-gear end of the bevel gear 3 into the inner hexagonal groove of the extension shaft of the automatic wrench 1, and then pass the lower part of the fixed shell 2 through the tight Set screw 18 is fixed with the axle sleeve 19 that automatic wrench 1 stretches out axle, then carries out installation work.

Among them, in order to make the driving bevel gear 11 meshed with the connecting bevel gear 3 rotate 90 degrees, it can still mesh with the intermediate bevel gear 15, thereby continuing to link with the connecting bevel gear 3, so the partial cone angle of the connecting bevel gear 3 is selected to be 45 degree, the diameter of the dedendum circle of the front cone surface is greater than the diameter of the intermediate shaft 17; the sub-cone angle of the intermediate bevel gear 15 is 45 degrees, and the angle of intersection with the axis of the connecting bevel gear 3 is 90 degrees, the dedendum circle of the front cone surface The diameter is greater than the diameter of the intermediate shaft 17; the sub-cone angle of the transmission bevel gear 11 is 45 degrees, and the shaft angle with the connecting bevel gear 3 is 90 degrees, and the diameter of the dedendum circle of the front cone surface is greater than the diameter of the intermediate shaft 17. The rotary housing 9 is connected with the transmission bevel gear 11 and the tightening sleeve 5, and rotates with them. In order to ensure the stability of the connection and rotation, the transmission connection sleeve 13 is cylindrical, and the transmission connection sleeve 13 and the middle shaft 7 The bearing 8 adopts a needle roller bearing, and the right end of the transmission connecting sleeve 13 is connected with the tightening sleeve 5 afterbody. In order to ensure the rotation of the rotary housing 9, the opening 10 on the fixed housing 2 is as wide as the diameter of the transmission connection sleeve 13 of the rotary housing 9, and the shape is such that the transmission connection sleeve 13 rotates 90 degrees from the right side to the top of the spherical surface of the fixed housing 2. Degree of track shape, its dimension tolerance select clearance fit tolerance. The tail cover 12 of the rotary housing covers the opening 10, and its size is larger than that of the opening 10 to ensure the safety of the opening 10 when the bevel gear rotates. At the same time, the tail cover 12 of the rotary housing also needs to ensure that it rotates 90 degrees around the intermediate shaft 17, so as not to interfere with the lower part of the fixed housing 2. Considering the fastening and load of the positioning pinball 14, the positioning pinball 14 selects pinball screws for use. The spherical surface on the left side of the fixed housing 2 is provided with two grooves matching pinball screws, so as to realize the clamping connection between the tail cover 12 of the rotary housing and the fixed housing 2, thereby ensuring that the rotary housing 9, the transmission bevel gear 11, Tighten the positioning of sleeve pipe 5 and rotate 90 degrees.

When in use, when the installation needs to be tightened from bottom to top, as shown in Figure 1, the extension shaft of the automatic wrench 1 is linked with the coupling bevel gear 3, and the transmission bevel gear 11 meshes with the coupling bevel gear 3 to realize the transmission of the bevel gear. The direction of rotation of 11 becomes 90 degrees with the connecting bevel gear 3, and the tightening sleeve 5 fixed with the non-gear end of the transmission bevel gear 11 is used to be enclosed within the bolt head that needs to be tightened and tightened, playing the role of a wrench. At this time, the tail cover 12 of the rotary housing covers the opening 10 . When the output direction of the automatic wrench 1 needs to be consistent, the tightening sleeve 5 can be rotated 90 degrees with the rotary housing 8 and the transmission bevel gear 9, as shown in Figure 2. At this time, the transmission bevel gear 11 Will break away from the meshing with the connecting bevel gear 3, and then mesh with the intermediate bevel gear 15, and the automatic wrench 1 rotation and power are transmitted to the tightening sleeve 5, and then the wrench effect is realized by tightening the sleeve 5. Now, the rotary housing tail cover 12 turns to the left side, although there is no covering setting on the opening 10 now, when using the automatic wrench in this state, the worker does not need to hold the right side tightly, so the opening 10 does not constitute danger. Only the direction of rotation of the tightening sleeve 5 at this moment is opposite to the output direction of the extension shaft of the automatic wrench 1, and the tightening direction can be adjusted by the switch of the automatic wrench itself. The non-gear end of the connecting bevel gear 3 can be replaced according to the size of the extended shaft of the automatic wrench 1, and the tightening sleeve 5 can also be replaced according to the size of the bolt or screw to be tightened, so that the straight and curved The applicability of dual-purpose joints is higher.

Claims (9)

1. An automatic wrench straight and bend dual-purpose joint, including a fixed shell (2) and a tightening sleeve (5), the head of the tightening sleeve (5) is an inner hexagon, characterized in that: the fixing The lower part of the casing (2) is cylindrical, and the upper part is hollow spherical. There is an opening (10) from the top of the spherical shape to the right side. An intermediate shaft (17) is installed through the center of the ball. The intermediate shaft (17) is set horizontally. A connecting bevel gear (3) is provided below the shaft (17) along the central axis of the fixed housing (2). The non-gear end of the lower part of the connecting bevel gear (3) is an external hexagon. An intermediate bevel gear (15) and a transmission bevel gear (11) are meshed with the coupling bevel gear (3). The line is vertical, the non-gear end of the left end of the intermediate bevel gear (15) is connected to the inner wall of the fixed housing (2) through the bearing (16), the non-gear end of the transmission bevel gear (11) is a stepped shaft, and the stepped shaft includes the front end shaft (6) and the middle shaft (7), the front end shaft (6) is fixedly connected with the tightening sleeve (5), and a rotary housing (9) is provided, and the rotary housing (9) covers the fixed housing (2) and The intermediate shaft (17) is slidingly connected with the fixed casing (2), the rotary casing (9) includes the rotary casing tail cover (12) and the transmission connection sleeve (13), and the transmission connection sleeve (13) passes through the bearing ( 8) Connected with the central shaft (7), the slewing housing tail cover (12) covers the opening (10), and the left end of the slewing housing tail cover (10) is clamped with the fixed housing (2) through the positioning marble (13) , the fixed housing (2) is provided with a groove matching with the positioning marble (14). 2. An automatic wrench straight-bending dual-purpose joint according to claim 1, characterized in that: the sub-cone angle of the connecting bevel gear (3) is 45 degrees, and the diameter of the root circle of the front cone surface is larger than that in the middle The diameter of the shaft (17). 3. An automatic wrench straight-bending dual-purpose joint according to claim 1, characterized in that: the sub-cone angle of the intermediate bevel gear (15) is 45 degrees, and the angle of intersection with the axis of the bevel gear (3) is 90 degrees, the diameter of the dedendum circle of the front cone surface is greater than the diameter of the intermediate shaft (17). 4. An automatic wrench straight-bending dual-purpose joint according to claim 1, characterized in that: the sub-cone angle of the transmission bevel gear (11) is 45 degrees, and the angle of intersection with the axis of the connecting bevel gear (3) is 90 degrees, the diameter of the dedendum circle of the front cone surface is greater than the diameter of the intermediate shaft (17). 5. The automatic wrench straight-bending dual-purpose joint according to claim 1, characterized in that: the transmission connection sleeve (13) is cylindrical, and the right end is connected to the tail of the tightening sleeve (5). 6. The automatic wrench straight-bending dual-purpose joint according to claim 1, characterized in that: the bearing (7) between the transmission connection sleeve (13) and the middle shaft (7) is a needle bearing. 7. The automatic wrench straight-bend dual-purpose joint according to claim 1, characterized in that: the width of the opening (10) is the diameter of the transmission connection sleeve (13). 8. The automatic wrench straight-bend dual-purpose joint according to claim 7, characterized in that: the shape of the opening (10) is that the transmission connection sleeve (13) is on the spherical surface of the fixed housing (3) from the right side To the top of the track shape turned 90 degrees. 9. The automatic wrench straight-bending dual-purpose joint according to claim 1, characterized in that: the positioning pinball (14) is a pinball screw.