CN219712269U

CN219712269U - Gear box for large electric pick

Info

Publication number: CN219712269U
Application number: CN202321066790.4U
Authority: CN
Inventors: 翟东京
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-05-06
Filing date: 2023-05-06
Publication date: 2023-09-19
Anticipated expiration: 2033-05-06

Abstract

The utility model discloses a gear box for a large electric pick, which comprises a box body and a shell, wherein a gear set is arranged in the box body, a motor is arranged in the shell, the box body is connected with the shell through bolts, the motor drives the gear set to rotate, the gear set comprises a large gear and a small gear which are in meshed connection, more than two through holes and threaded holes are formed in the shell, the through holes are communicated with the threaded holes, the box body and the shell are fixed through the threaded holes by bolts, more than two positioning holes are formed in the large gear, internal threads are formed in the inner wall of each positioning hole, angles between two adjacent positioning holes are identical, and the positioning holes are distributed on the same circumference concentric with the large gear. The gear box for the large electric pick can be maintained conveniently, and the internal structure of the gear box is not damaged in the disassembling process.

Description

Gear box for large electric pick

Technical Field

The utility model relates to the field of electric picks, in particular to a gear box for a large electric pick.

Background

The electric pick is a double-insulation handheld electric tool taking a single-phase series excited motor as power, has the characteristics of safety, reliability, high efficiency, convenient operation and the like, is widely applied to pipeline laying, mechanical installation, water supply and drainage facility construction, interior decoration, port facility construction and other construction engineering construction, and is suitable for crushing, leveling, digging, slotting, cutting and other operations on concrete, masonry, asphalt pavement by pick drills or other suitable accessories, such as chisels, shovels and the like. The structure of the electric pick gearbox commonly used in the market is shown in fig. 1, the shell is tightly matched with the gearbox, and when the shell needs to be maintained and taken out, the shell can be taken down only by knocking with an iron hammer, the plastic shell is easy to damage, and the taking-out process is quite troublesome. And secondly, when the gear needs to be taken down in the maintenance process, the clamp spring at the large gear is usually taken out, and then the spindle nose of the large gear is knocked by an iron hammer to take down the gear. However, when the hammer is used for knocking, the shaft head, the distance ring, the bearing and the supporting seat are all damaged, and particularly the bearing seat is seriously damaged, so that the whole gearbox is finally required to be replaced. In conclusion, the existing gearbox is inconvenient to maintain, and the maintenance cost is increased.

Disclosure of Invention

The utility model aims to provide a gear box for a large electric pick, which can be maintained conveniently without damaging the internal structure of the gear box.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a gear box for big electric pick, includes box and casing, install the gear train in the box, be equipped with the motor in the casing, the box passes through bolted connection with the casing, the motor drives the gear train and rotates, the gear train is including gear wheel and the pinion of meshing connection, be equipped with more than two through-holes and screw hole on the casing, the through-hole communicates with the screw hole, the bolt passes the screw hole and fixes box and casing, be equipped with more than two locating holes on the gear wheel, be equipped with the internal thread on the locating hole inner wall, two adjacencies be the angle the same between the locating hole, the locating hole distributes on same circumference concentric with the gear wheel.

Preferably, the threaded holes and the through holes are respectively provided with four, and the central axes of the threaded holes and the through holes coincide.

Preferably, the screw holes are provided at four corners of the housing, respectively.

Preferably, the number of the positioning holes is four, and the included angle between every two adjacent positioning holes is 90 degrees.

Preferably, the upper end of the box body is provided with a perforation, the inner wall of the perforation is provided with an internal thread, the perforation coincides with the central axis of the motor output shaft, and the perforation is communicated with the box body.

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

1) Through setting up screw hole and perforation, the usable screw rod is taken off the casing fast.

2) By arranging the positioning holes, the large gear can be quickly detached by using the screw, and the shaft head, the distance ring, the bearing and the supporting seat are not damaged in the detaching process;

3) Through setting up the perforation, can utilize the screw rod to dismantle casing and motor together fast.

Drawings

FIG. 1 is a schematic diagram of a prior art gear box for a large electric pick;

FIG. 2 is a schematic view of a gear box for a large electric pick according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a part of a gear box for a large electric pick according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram of a part of a gear box for a large electric pick according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a gear box for a large electric pick according to an embodiment of the present utility model when a housing is detached;

in the figure, 1, a box body, 2, a shell, 3, a motor, 4, a large gear, 5, a rotating shaft, 6, a shaft head, 7, a bearing pressing plate, 8, a distance ring, 9, a bearing, 10, a through hole, 11, a threaded hole, 12, a positioning hole, 13, a perforation, 14, a screw, 15 and a bearing seat.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all 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.

Referring to fig. 1, the conventional gear box for a large electric pick comprises a box body 1 and a shell 2, wherein a gear set is installed in the box body 1, a motor 3 is arranged in the shell 2, the box body 1 is connected with the shell 2 through bolts, and the motor 3 drives the gear set to rotate through a transmission mechanism. The gear set comprises a large gear 4 and a small gear which are connected in a meshed mode, a rotating shaft 5 is arranged at the center of the large gear 4, a shaft head 6 is fixed at the upper end of the rotating shaft 5, a bearing pressing plate 7 is arranged at the lower end of the large gear 4, a distance ring 8 is arranged outside the shaft head 6 and at the lower end of the large gear 4, the rotating shaft 5 is arranged on a bearing 9, the bearing 9 is arranged on a bearing seat 15, and the bearing seat 15 is arranged in the box body 1.

Referring to fig. 2-5, the gear box for a large electric pick of the present utility model is provided with four through holes 10 and threaded holes 11 on a housing 2, the through holes 10 and the threaded holes 11 are respectively disposed at four corners of the housing 2, the through holes 10 are communicated with the threaded holes 11, and the central axes of the through holes are coincident, and bolts pass through the threaded holes 11 to fix the box 1 with the housing 2.

Four positioning holes 12 are formed in the large gear 4, internal threads are formed in the inner wall of each positioning hole 12, an included angle between two adjacent positioning holes 12 is 90 degrees, and the positioning holes 12 are distributed on the same circumference concentric with the large gear 4.

The upper end of the box body 1 is provided with a perforation 13, the inner wall of the perforation 13 is provided with internal threads, the perforation 13 coincides with the central axis of the output shaft of the motor 3, and the perforation 13 is communicated with the box body 1.

Working principle: when the shell 2 needs to be disassembled, there are two modes, the first mode is as shown in fig. 3, firstly, the bolts connecting the shell 2 and the box 1 are removed, then the screw 14 is taken out to extend into the through holes 13, the screw 14 is screwed into the box 1, and then the shell 2 and the motor 3 are ejected out by the screw 14; in the second mode, as shown in fig. 5, the bolts connecting the housing 2 and the case 1 are removed, then two screws 14 are taken out to extend into the through holes 10 at two opposite angles respectively, then the screws 14 are rotated to gradually move the housing 2 out by screwing the screws into the bottoms of the threaded holes 11. When the gear needs to be removed, as shown in fig. 4, the two screws 14 are respectively inserted into the two opposite positioning holes 12, and the screws 14 are screwed to the bottoms of the positioning holes 12 until the screws abut against the bearing pressing plate 7, and the two screws 14 are rotated in turn, so that the large gear 4 rises along with the rotation of the screws 14, and is removed.

The foregoing is merely illustrative and explanatory of the utility model, as it is well within the scope of the utility model, as it is intended to provide those skilled in the art with various modifications, additions and substitutions to the specific embodiments disclosed and those skilled in the art without departing from the scope of the utility model as disclosed in the accompanying claims.

Claims

1. The utility model provides a gear box for big electric pick, includes box and casing, install the gear train in the box, be equipped with the motor in the casing, the box passes through bolted connection with the casing, the motor drives the gear train and rotates, the gear train includes gear wheel and pinion that the meshing is connected, its characterized in that: the novel gear box is characterized in that more than two through holes and threaded holes are formed in the shell, the through holes are communicated with the threaded holes, the bolts penetrate through the threaded holes to fix the box body and the shell, more than two positioning holes are formed in the large gear, internal threads are formed in the inner wall of each positioning hole, the angles between two adjacent positioning holes are identical, and the positioning holes are distributed on the same circumference concentric with the large gear.

2. A gear box for a large electric pick according to claim 1, characterized in that: the threaded holes and the through holes are respectively provided with four, and the central axes of the threaded holes and the through holes coincide.

3. A gear box for a large electric pick according to claim 2, characterized in that: the threaded holes are respectively formed in four corners of the shell.

4. A gear box for a large electric pick according to claim 1, characterized in that: the locating holes are four, and the included angle between every two adjacent locating holes is 90 degrees.

5. A gear box for a large electric pick according to claim 1, characterized in that: the upper end of the box body is provided with a perforation, the inner wall of the perforation is provided with an internal thread, the perforation coincides with the central axis of the motor output shaft, and the perforation is communicated with the box body.