CN219444926U

CN219444926U - Electric wrench

Info

Publication number: CN219444926U
Application number: CN202320267898.3U
Authority: CN
Inventors: 吴祥新; 严慧兵; 董瑞
Original assignee: Hubei Huaxin Machinery Development Co ltd
Current assignee: Hubei Huaxin Machinery Development Co ltd
Priority date: 2023-02-21
Filing date: 2023-02-21
Publication date: 2023-08-01
Anticipated expiration: 2033-02-21

Abstract

An electric wrench comprises a wrench body (1), a transmission shaft (2), a planetary gear mechanism, a gear housing (4), a transmission sleeve (5) and an outer housing (6), wherein the outer housing (6) is arranged at the end part of the housing of the wrench body (1), the transmission shaft (2) is arranged on a power output shaft of the wrench body (1), the transmission shaft (2) is movably arranged in the outer housing (6), the power output end of the transmission shaft (2) is fixedly connected with a sun gear (7) of the planetary gear mechanism, and a group of planetary gear rotating grooves are formed in the outer wall of the gear housing (4); the advantages are that: the planetary gear mechanism is connected with the power output end of the electric wrench, so that the torque force is increased, and the structure is simple.

Description

Electric wrench

Technical Field

The utility model relates to the field of wrench equipment, in particular to an electric wrench.

Background

At present, the torque force of the existing electric wrench is small, a plurality of bolts are still screwed in the production process of the soot blower, and the electric wrench with large torque force is lacking.

Disclosure of Invention

The present utility model is directed to providing an electric wrench for overcoming the above-mentioned drawbacks.

The utility model comprises a wrench body, a transmission shaft, a planetary gear mechanism, a gear housing, a transmission sleeve and an outer housing,

the outer shell is arranged at the end part of the shell of the wrench body, the transmission shaft is arranged on the power output shaft of the wrench body, the transmission shaft is movably arranged in the outer shell, the power output end of the transmission shaft is fixedly connected with the sun gear of the planetary gear mechanism, a group of planetary gear rotating grooves are formed in the outer wall of the gear shell, the center of the gear shell is provided with a power output bulge, the power output bulge is movably arranged in the outer shell through a bearing, the planetary gear mechanism is movably arranged in the gear shell, a group of planetary gears of the planetary gear mechanism are positioned in the corresponding planetary gear rotating grooves, the gear ring of the planetary gear mechanism is arranged on the inner wall of the outer shell, and the transmission sleeve is arranged on the power output bulge.

The end part of the shell of the wrench body is provided with a bearing limit sleeve, and the transmission shaft is movably arranged in the bearing limit sleeve through a bearing.

The planetary gear mechanism comprises three planetary gears, a sun gear and a gear ring, wherein the sun gear is positioned at the center, and the three planetary gears are respectively meshed with the sun gear and the gear ring.

The sun gear and the transmission shaft are integrally cast and formed.

One end of the transmission sleeve is fixedly arranged on the power output bulge, and a prismatic groove is formed in the center of the other end of the transmission sleeve.

The shell body is hollow cylindrical, and the end part of the shell body is provided with an expansion part.

The wrench body is a lithium battery electric wrench.

The diameter of the sun gear is smaller than the diameter of the planet gears.

The utility model has the advantages that: the planetary gear mechanism is connected with the power output end of the electric wrench, so that the torque force is increased, and the structure is simple.

Drawings

Fig. 1 is a schematic diagram of the structure of the present utility model.

Fig. 2 is a schematic view of a partially enlarged structure of fig. 1 according to the present utility model.

Fig. 3 is a schematic view of the structure of the planetary gear mechanism of the present utility model.

Description of the embodiments

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the embodiments of the present utility model, it should be noted that, if the terms "upper," "lower," "inner," "outer," and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like in the description of the present utility model, if any, are used for distinguishing between the descriptions and not necessarily for indicating or implying a relative importance.

In the description of the embodiments of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in the drawings, the utility model comprises a wrench body 1, a transmission shaft 2, a planetary gear mechanism, a gear housing 4, a transmission sleeve 5 and an outer housing 6,

the casing 6 is installed at the casing tip of spanner body 1, transmission shaft 2 is installed on the power take off shaft of spanner body 1, transmission shaft 2 movable mounting is in casing 6, the power take off end of transmission shaft 2 and planetary gear mechanism's sun gear 7 fixed connection, it has a set of planet wheel to rotate the groove to open on the outer wall of gear housing 4, the center department of gear housing 4 is provided with power take off arch 9, power take off arch 9 passes through bearing movable mounting in casing 6, planetary gear mechanism movable mounting is in gear housing 4, planetary gear mechanism's a set of planet gear 8 is located the planet wheel rotation groove that corresponds, planetary gear mechanism's ring gear 10 is installed on casing 6 inner wall, the cover 5 is installed on power take off arch 9.

The end part of the shell of the wrench body 1 is provided with a bearing limit sleeve 11, and the transmission shaft 2 is movably arranged in the bearing limit sleeve 11 through a bearing.

The planetary gear mechanism comprises three planetary gears 8, a sun gear 7 and a gear ring 10, wherein the sun gear 7 is positioned at the center, and the three planetary gears 8 are respectively meshed with the sun gear 7 and the gear ring 10.

The sun gear 7 and the transmission shaft 2 are cast integrally.

One end of the transmission sleeve 5 is fixedly arranged on the power output bulge 9, and a prismatic groove is formed in the center of the other end of the transmission sleeve 5.

The outer casing 6 is hollow cylindrical, and an expansion part is arranged at the end part of the outer casing 6.

The wrench body 1 is a lithium battery electric wrench.

The diameter of the sun gear 7 is smaller than the diameter of the planet gears 8.

The working mode and principle are as follows: as shown in fig. 1, the wrench body 1 outputs power to drive the transmission shaft 2 to rotate, the transmission shaft 2 drives the sun gear 7 to rotate, the sun gear 7 drives a group of planetary gears 8 to rotate, the planetary gears 8 rotate in planetary gear rotating grooves of the gear housing 4, the gear housing 4 is driven to rotate in the gear ring 10, the power output protrusion 9 rotates along with the planetary gears, and the power output protrusion 9 drives the transmission sleeve 5 to rotate. The bolts on the sootblower carriage 100 are twisted through prismatic grooves on the drive sleeve 5. The diameter of the sun gear 7 is smaller than the diameter of the planetary gears 8, and the torque force is increased by the reduction.

Claims

1. An electric wrench is characterized by comprising a wrench body (1), a transmission shaft (2), a planetary gear mechanism, a gear shell (4), a transmission sleeve (5) and an outer shell (6),

the outer casing (6) is installed at the casing tip of spanner body (1), transmission shaft (2) are installed on the power take off shaft of spanner body (1), transmission shaft (2) movable mounting is in outer casing (6), the power take off end of transmission shaft (2) and planetary gear mechanism's sun gear (7) fixed connection, it has a set of planet wheel to rotate the groove to open on the outer wall of gear housing (4), the center department of gear housing (4) is provided with power take off arch (9), power take off arch (9) pass through bearing movable mounting in outer casing (6), planetary gear mechanism movable mounting is in gear housing (4), planetary gear mechanism's a set of planet gear (8) are located the planet wheel rotation groove that corresponds, planetary gear mechanism's ring gear (10) are installed on outer casing (6) inner wall, driving sleeve (5) are installed on power take off arch (9).

2. An electric wrench as claimed in claim 1, wherein the end of the wrench body (1) is provided with a bearing stop collar (11), and the drive shaft (2) is movably mounted in the bearing stop collar (11) by means of a bearing.

3. An electric wrench as claimed in claim 1, wherein the planetary gear mechanism comprises three planetary gears (8), a sun gear (7) and a ring gear (10), the sun gear (7) being centrally located, the three planetary gears (8) being in mesh with the sun gear (7) and the ring gear (10), respectively.

4. An electric wrench as claimed in claim 1, characterised in that the sun gear (7) is cast integrally with the drive shaft (2).

5. An electric wrench as claimed in claim 1, wherein one end of the driving sleeve (5) is fixedly mounted on the power output boss (9), and a prismatic groove is formed in the center of the other end of the driving sleeve (5).

6. An electric wrench as claimed in claim 1, wherein the outer housing (6) is hollow cylindrical, and wherein the end of the outer housing (6) is provided with the expansion portion.

7. An electric wrench as claimed in claim 1, wherein the wrench body (1) is a lithium battery electric wrench.

8. An electric wrench as claimed in claim 1, characterized in that the diameter of the sun gear (7) is smaller than the diameter of the planetary gear (8).