CN217596955U

CN217596955U - Torque-adjustable electric wrench

Info

Publication number: CN217596955U
Application number: CN202123152689.4U
Authority: CN
Inventors: 章祥光
Original assignee: Jiangxi Langxu Industrial Co ltd
Current assignee: Jiangxi Langxu Industrial Co ltd
Priority date: 2021-12-15
Filing date: 2021-12-15
Publication date: 2022-10-18
Anticipated expiration: 2031-12-15

Abstract

The utility model relates to an electric spanner technical field specifically discloses an electric spanner with adjustable torsion, including the grab handle, locate driving piece and rotation connection in the grab handle and by driving piece driven drive shaft in the grab handle, grab handle one end is equipped with the connector, the drive shaft free end stretches into in the connector and the rigid coupling has first delivery head, the connector can be dismantled and be connected with the change head, be equipped with reduction gears in the change head, reduction gears's input and first delivery head joint, reduction gears's other end rigid coupling has the second delivery head, the purpose of traditional electric spanner through spring and buckle regulation torque adjusting ring position reaching regulation torsion has been solved, need regularly to dismantle in order to paint lubricating oil, the comparatively trouble problem of operation.

Description

Torque-adjustable electric wrench

Technical Field

The application relates to the technical field of electric wrenches, and particularly discloses an electric wrench with adjustable torque force.

Background

The electric wrench is an electric tool for screwing and unscrewing the bolt and the nut, and is a tool for screwing the high-strength bolt. The high-strength bolt screwing tool is used for initial screwing, final screwing and initial screwing of a torsional shear type high-strength bolt in the construction of large hexagon head high-strength bolts installed on steel structure bridges, factory buildings, chemical engineering and power generation equipment, and has strict requirements on the torque or axial force of bolt fasteners.

For bolts used in different specifications or different places, the required torque is different, while the conventional electric wrench adjusts the torque of the electric wrench by adjusting the position of the torque adjusting ring through a spring, a buckle and the like, but the mode has higher requirement on the elasticity of the spring, the spring can deform in long-term use, the elasticity effect is reduced, and the torque adjustment is not accurate enough.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an aim at solve traditional electric spanner and adjust moment of torsion adjustable ring position through spring and buckle and reach the purpose of adjusting torsion, need regularly dismantle in order to paint lubricating oil, operate comparatively troublesome problem.

In order to achieve the above object, the utility model discloses a basic scheme provides an electric spanner with adjustable torsion, including the grab handle, locate driving piece and rotation connection in the grab handle and by driving piece driven drive shaft, grab handle one end is equipped with the connector, the drive shaft free end stretches into in the connector and the rigid coupling has first delivery head, the connector can be dismantled and be connected with the crossover sub, be equipped with reduction gears in the crossover sub, reduction gears's input and first delivery head joint, reduction gears's other end rigid coupling has the second delivery head.

The principle and effect of this basic scheme lie in:

compared with the prior art, the utility model discloses a set up the conversion head, make electric spanner can export torsion through first output head or second output head, and change the torsion between first output head and the second output head through reduction gears, thereby make first output head and second output head can export different torsion, and adopt the mode of dismantling the connection, need not utilize the spring adjustment, when first output head exports torsion, the second output head is in out-of-operation state, friction is plum has been reduced, the cost of wearing and tearing and maintenance has been reduced, traditional electric spanner has been solved and has reached the purpose of adjusting torsion through spring and buckle regulation torque adjusting ring position, need regularly to dismantle in order to paint lubricating oil, the comparatively troublesome problem of operation.

Furthermore, the speed reducing mechanism is a planetary gear mechanism, a conversion disc is connected in the conversion head in a rotating mode, a clamping joint clamped with the first output head is arranged on one side of the conversion disc, a gear ring is fixedly connected to the other side of the conversion disc, and a sun gear coaxially connected with the second output head and a plurality of planet gears meshed between the gear ring and the sun gear are connected in the conversion head in a rotating mode. The purpose of speed reduction is achieved through the planetary gear mechanism, the transmission is compact, and the structure is stable.

Furthermore, a circular groove is formed in one side, far away from the inside of the clamping head, of the conversion disc, and the gear ring is fixedly connected to the inner wall of the circular groove. The gear ring is fixedly connected with the inner wall of the circular groove, so that the occupied space of the planetary gear mechanism in the conversion head is reduced.

Furthermore, a limiting ring is fixed in the conversion head, a limiting groove matched with the conversion disc is formed in the inner wall of the limiting ring, and the conversion disc is rotatably connected in the limiting groove. The limiting ring and the limiting groove can play a role in limiting and guiding the conversion disc.

Furthermore, the inner wall of the limiting ring is fixedly connected with a fixing ring, and the planet wheels are rotatably connected with the fixing ring. The fixed ring plays a supporting role for the planet wheels.

Furthermore, a connecting shaft is fixedly connected between the planet wheel and the second output head, and a guide frame which is rotatably connected with the connecting shaft is fixedly connected in the conversion head. The guide frame plays the spacing and effect of direction to the connecting axle.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic view of a torque adjustable electric wrench according to an embodiment of the present disclosure;

FIG. 2 is a cross-sectional view of a transition head of a torque adjustable electric wrench according to an embodiment of the present application;

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the objects of the present invention, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.

Reference numerals in the drawings of the specification include: the device comprises a grab handle 1, a conversion head 2, a fixed gear ring 3, a sleeve 4, a second output head 5, a first output head 6, a conversion disk 7, a planet wheel 8, a connecting shaft 9, a sun wheel 10, a limiting ring 11, a fixed ring 12, a guide frame 13 and a clamping head 14.

An embodiment of a torque adjustable electric wrench is shown in fig. 1: including grab handle 1, locate driving piece and rotation connection in grab handle 1 and by driving piece driven drive shaft, the driving piece adopts electric motor, 1 one end of grab handle is equipped with the connector, the drive shaft free end stretches into in the connector and the rigid coupling has first delivery head 6, first delivery head 6 is interior hexagon head, the connector can be dismantled through the internal thread and be connected with the

change head

2, 2 tip of change head still are equipped with the fixed shelves ring 3 that closely laminates with grab handle 1, be equipped with a plurality of screw holes that can communicate each other between fixed shelves ring 3 and the grab handle 1, improve the stability of being connected between change head 2 and the grab handle 1, prevent to rock.

Be equipped with planetary gear reduction gears in the conversion head 2, the 2 internal rotations of conversion head are connected with conversion dish 7, conversion dish 7 one side is equipped with the joint 14 with first output 6 joint, joint 14 is the hexagon column with interior hexagon head adaptation, conversion dish 7 opposite side is equipped with the circular slot, circular slot inner wall rigid coupling has the ring gear, 2 internal rotations of conversion head are connected with sun gear 10 and a plurality of meshing planet wheel 8 between ring gear and sun gear 10, conversion head 2 internal fixation has spacing ring 11, spacing ring 11 inner wall is equipped with the spacing groove with conversion dish 7 adaptation, conversion dish 7 rotates to be connected in the spacing groove, spacing ring 11 inner wall still rigid coupling has solid fixed ring 12, planet wheel 8 all rotates with solid fixed ring 12 to be connected.

The sun gear 10 is fixedly connected with a connecting shaft 9, a guide frame 13 which is rotatably connected with the connecting shaft 9 is fixedly connected in the head changing device, a second output head 5 is fixedly connected at the end part of the connecting shaft 9, the second output head 5 is also a hexagon socket head and is smaller than the second output head 5 in size, and a sleeve 4 used for protecting the second output head 5 is arranged at the end part of the conversion head 2.

The utility model discloses an in the implementation, when adopting first output 6 output torque, second output 5 does not install, is in idle state, when needs use second output 5 output torque, screw up through conversion head 2, with conversion head 2 and connector stable connection, and make 14 card of joint go into in first output 6, make joint 14 drive first output 6 and rotate, and drive second output 5 through planetary gear mechanism and rotate, thereby make second output 5 output torque.

Compared with the prior art, the utility model discloses a set up the conversion head 2, make electric spanner can export torsion through first output head 6 or second output head 5, and change torsion between first output head 6 and the second output head 5 through reduction gears, thereby make first output head 6 and second output head 5 can export different torsion, and adopt the mode of dismantling the connection, need not utilize the spring adjustment, when first output head 6 exports torsion, second output head 5 is in out-of-operation state, the friction is plum has been reduced, the cost of wearing and tearing and maintenance has been reduced, the traditional electric spanner of having solved reaches the purpose of adjusting torsion through spring and buckle regulation moment of torsion adjustable ring position, need regularly dismantle in order to paint lubricating oil, operate comparatively troublesome problem.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention has been disclosed by the preferred embodiment, it is not limited to the present invention, and any person skilled in the art can make modifications or changes equivalent to the equivalent embodiments by utilizing the above disclosed technical contents without departing from the technical scope of the present invention, but all the modifications, changes and changes of the technical spirit of the present invention made to the above embodiments are also within the scope of the technical solution of the present invention.

Claims

1. The utility model provides an electric spanner with adjustable torsion which characterized in that: including the grab handle, locate driving piece and rotation connection in the grab handle and by driving piece driven drive shaft, grab handle one end is equipped with the connector, the drive shaft free end stretches into in the connector and the rigid coupling has first delivery head, the connector can be dismantled and be connected with the change head, be equipped with reduction gears in the change head, reduction gears's input and first delivery head joint, reduction gears's other end rigid coupling has the second delivery head.

2. The torque-adjustable electric wrench as claimed in claim 1, wherein the speed reduction mechanism is a planetary gear mechanism, a switching disk is rotatably connected in the switching head, a clamping joint is provided on one side of the switching disk and is clamped with the first output head, a gear ring is fixedly connected to the other side of the switching disk, and a sun gear coaxially connected with the second output head and a plurality of planetary gears engaged between the gear ring and the sun gear are rotatably connected in the switching head.

3. The torque adjustable electric wrench as claimed in claim 2, wherein the side of the switching plate away from the inside of the locking head is provided with a circular groove, and the gear ring is fixed to the inner wall of the circular groove.

4. A torque adjustable electric wrench as claimed in claim 2 or 3, wherein a limiting ring is fixed in the switching head, a limiting groove adapted to the switching disk is formed on an inner wall of the limiting ring, and the switching disk is rotatably connected in the limiting groove.

5. The torque adjustable electric wrench as claimed in claim 4, wherein the inner wall of the limiting ring is further fixedly connected with a fixing ring, and the planetary gears are rotatably connected with the fixing ring.

6. The torque adjustable electric wrench as claimed in claim 2, wherein a connecting shaft is fixed between the planet gear and the second output head, and a guide frame rotatably connected to the connecting shaft is fixed in the converter.