CN216478798U

CN216478798U - A gear box device for pruner

Info

Publication number: CN216478798U
Application number: CN202122561011.5U
Authority: CN
Inventors: 何岳明
Original assignee: Ningbo Tianhong Electronics Co ltd
Current assignee: Ningbo Tianhong Electronics Co ltd
Priority date: 2021-10-22
Filing date: 2021-10-22
Publication date: 2022-05-10
Anticipated expiration: 2031-10-22

Abstract

A gearbox arrangement for a pruner, the gearbox arrangement comprising a gearbox housing; a gear transmission assembly, a motor; the method is characterized in that: the gear transmission assembly comprises a driving wheel connected with the output end of the motor and a driven wheel connected with the blade of the pruning machine, a metal supporting plate is arranged at the position of the gear box shell corresponding to the installation gear shaft, and two ends of the gear shaft of the driven wheel are respectively fixedly arranged in the metal supporting plate. The utility model has the advantages that: the reciprocating cutting motion of pruner blade can produce a large amount of heats, has add the backup pad in the gear box casing, is fixed in the backup pad with the gear shaft on, in the course of the work, can realize the heat dissipation through the metal backup pad with the heat that produces to solve the pruner when long-time operation, because of the burn-out problem that the gear box generates heat and arouses, ensure that the gear shaft can not produce and shift at the in-process that generates heat, improve equipment's safety in utilization and reliability.

Description

A gear box device for pruner

Technical Field

The utility model relates to a pruner, in particular to a gear box device for the pruner.

Background

An electric pruning machine (hedge trimmer) is a tool which is driven by a motor, converts the rotary motion into the reciprocating motion of an upper blade and a lower blade through a transmission device and is used for cutting various shrubs and hedges.

In the prior art, gear transmission is mostly adopted by the pruner as a transmission device to drive the reciprocating motion of the blade, and in the gear transmission process, the safety and the reliability of the whole equipment are often influenced by the problems of installation and matching inside a gear box. For example, the utility model patent application "an electric pruner" with application number 201510863389.7 discloses an electric pruner, comprising: a housing; a drive device; a transmission device; and a shear structure; be equipped with the gear box subassembly in the casing, the casing is through 4 at least double-screw bolts and gear box subassembly fixed connection, and the gear box subassembly includes the gear box, is equipped with the gear box lid on the gear box, all be equipped with 4 at least double-screw bolts via holes on gear box and the gear box lid, the double-screw bolt passes the double-screw bolt via hole with gear box lid and gear box fixed connection, be equipped with down the tang on the gear box, be equipped with the top dead center that corresponds on the gear box lid, top dead center and lower tang cooperate the joint location mutually. The gearbox and the shell are positioned through the studs, and the studs are restricted and associated with each other, so that the phenomenon of over-loose or over-tight matching is solved; the gear box is easy to assemble, and production operation is facilitated.

As the utility model patent ' pruner ' with patent number 201620565753.1 discloses a pruner, including the casing, provide the driving head of power and by receiving power transmission and reciprocating motion's sword strip subassembly, be connected with planetary gear assembly on the driving head, the last eccentric link assembly that is connected with of planetary gear assembly, the driving head drives planetary gear assembly makes eccentric link assembly drive sword strip subassembly reciprocating motion. This patent adopts eccentric gear drive structure to realize power transmission, can reduce the transmission space, and the drive ratio is big, and the transmission is steady, simple to operate.

All only considered the convenient reliability of gear drive structural design and assembly in the above-mentioned current patent, neglected the gear drive in the gear shaft because of the high-speed problem of generating heat that produces of rotating, traditional gear drive structure is because the both ends direct mount of gear shaft is in seting up the shaft hole on the gear box casing, long-time operation back, the gear shaft both ends cause the wearing and tearing in gear box shaft hole very easily owing to generate heat and high-speed operation, and then make the gear box casing produce serious deformation, even damage, can cause scrapping in advance of product from this, influence the life of equipment.

Therefore, the existing pruning machine needs to be further improved and perfected so as to improve the use reliability of the equipment and prolong the service life of the whole pruning machine.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to provide a gear box device for a pruner, which can effectively prevent wear and deformation, in view of the above-mentioned prior art.

The technical scheme adopted by the utility model for solving the technical problems is as follows: a gear box device for pruner, this gear box device is including

A gearbox housing;

the gear transmission assembly is accommodated in the gear box shell;

the motor drives the gear transmission assembly to work, the input end of the gear transmission assembly is connected with the output end of the motor, and the output end of the gear transmission assembly is connected with the pruner blade;

the method is characterized in that: the gear transmission assembly comprises a driving wheel connected with the output end of the motor and a driven wheel connected with the blade of the pruner, a metal support plate is arranged at the position of the gear box shell corresponding to the installation gear shaft, and two ends of the gear shaft of the driven wheel are respectively and fixedly arranged in the metal support plate.

In order to realize diversified speed change, the gear transmission assembly preferably further comprises an intermediate wheel, the intermediate wheel is located between the driving wheel and the driven wheel, and the motor drives the pruner blade to move sequentially through the driving wheel, the intermediate wheel and the driven wheel.

In order to better accelerate heat dissipation and prevent the gear box from deforming, preferably, two ends of the gear shaft of the intermediate wheel (or the intermediate wheel closest to the driven wheel) are respectively fixedly arranged in the metal supporting plate.

Preferably, the metal support plate located on the same side of each gear shaft is of an integrated structure, and the metal support plate is provided with a first shaft hole for the gear shaft of the driven wheel to be inserted into and a second shaft hole for the gear shaft of the intermediate wheel to be inserted into.

Preferably, the metal support plates located on the same side of the gear shafts are of a split structure and comprise a first support plate and a second support plate which are independent of each other, the first support plate is provided with a first shaft hole for inserting the gear shaft of the driven wheel, and the second support plate is provided with a second shaft hole for inserting the gear shaft of the intermediate wheel.

In order to facilitate installation and disassembly, the gear box shell preferably comprises an upper shell and a lower shell which are detachably connected, and the metal supporting plate comprises an upper supporting plate arranged on the upper shell and a lower supporting plate arranged on the lower shell.

Preferably, the metal support plate can be made of various metal materials, preferably an aluminum alloy plate, a copper plate or an iron plate.

For convenience of molding, the metal support plate and the gear case are preferably integrally injection molded.

For convenience of replacement and maintenance, the metal support plate and the gear box shell are detachably and fixedly connected into a whole.

In order to further improve the heat dissipation efficiency and accelerate the temperature reduction, preferably, the metal supporting plate is further provided with a heat dissipation piece.

Compared with the prior art, the utility model has the advantages that: the reciprocating cutting motion of pruner blade can produce a large amount of heats, the backup pad has been add in the gear box casing, be fixed in the backup pad with the gear shaft, compare in original mode of being connected the gear shaft directly with the gear box casing, on the one hand can strengthen the intensity of gear box casing, on the other hand, in equipment working process, can realize the heat dissipation through the metal backup pad with the heat that produces, thereby solve the pruner when long-time operation, burn out the quick-witted problem that arouses because of the gear box generates heat, avoid the position of fixed gear shaft on the gear box to take place to warp, reduce the loss, ensure that the gear shaft can not produce the dislocation at the in-process that generates heat, and then the life of extension equipment, improve equipment's safety in utilization and reliability.

Drawings

Fig. 1 is a schematic view of the whole structure of a pruner according to an embodiment of the present invention.

Fig. 2 is one of exploded perspective views of a pruner according to an embodiment of the present invention.

Fig. 3 is a second exploded perspective view of the pruner according to the embodiment of the present invention.

Fig. 4 is one of assembly sectional views (support plate integrated structure) of the pruner of the embodiment of the present invention.

Fig. 5 is a second assembly sectional view (a split structure of the support plate) of the pruner according to the embodiment of the present invention.

Detailed Description

The utility model is described in further detail below with reference to the accompanying examples.

The present embodiment relates to a pruner, in particular to a gear box device of a pruner, which can be applied to various pruners or hedge trimmer apparatuses.

As shown in fig. 1 to 5, the gear box device of the present embodiment includes a gear box housing 1, a gear transmission assembly 2 and a motor 3, wherein the gear transmission assembly 2 is accommodated in the gear box housing 1, the motor 3 can drive the gear transmission assembly 2 to work, and after the gear transmission assembly 2 changes the speed, the motor can drive the blade 4 of the pruner to work, so as to realize the reciprocating cutting motion; the input end of the gear transmission component 2 is connected with the output end of the motor 3, and the output end of the gear transmission component 2 is connected with the pruner blade 4.

The gear transmission assembly 2 comprises a driving wheel 21 (namely the input end of the gear transmission assembly 2) connected with the output end of the motor 3, an intermediate wheel 22 for bearing the upper part and the lower part and a driven wheel 23 (namely the output end of the gear transmission assembly 2) connected with the pruner blade 4, and the motor 3 drives the pruner blade 4 to move through the driving wheel 21, the intermediate wheel 22 and the driven wheel 23 in sequence;

the driving wheel 21 is a power input end, the driven wheel 23 is a power output end, the number and arrangement mode of the intermediate wheels 22 can be set according to actual speed change requirements, one or more or none of the intermediate wheels 22 can be provided, the embodiment includes one driving wheel 21, one intermediate wheel 22 and one driven wheel 23, referring to fig. 2 and 3, the gear transmission assembly 2 is in the prior art, and can be implemented by adopting various existing gear transmission pair structures.

The pruner of this embodiment is at the during operation, because blade 4's reciprocating cutting motion can produce a large amount of heats, the tradition structure all directly sets up the shaft hole on gear box casing 1, the gear shaft both ends of gear drive subassembly 2 are the direct mount in the shaft hole, because gear box casing 1 is mostly plastic construction, be heated easy deformation, lead to taking place the shifting of gear shaft after the shaft hole warp, finally influence gear drive's precision and efficiency, cause the unable normal work of equipment.

In the embodiment, the gear housing 1 is provided with a metal supporting plate 5, the metal supporting plate 5 is provided with a shaft hole 50, two ends of the gear shaft of the gear transmission assembly 2 can be fixedly mounted on the metal supporting plate 5, and the metal supporting plate 5 can be made of various metal materials, such as a copper plate or an iron plate, preferably an aluminum alloy plate.

The metal supporting plates 5 can be fully distributed on the whole gearbox shell 1, each gear shaft can be fixed on the metal supporting plate 5, however, in order to take cost into consideration, generally, the metal supporting plates 5 are arranged at positions of the gear shaft of the gearbox shell 1 corresponding to the driven wheel 23, the driven wheel 23 is directly connected with the blade 4 (closest to the blade 4), and is also a position where the temperature is easily increased after the blade 4 moves to generate heat, and two ends of the gear shaft 231 of the driven wheel 23 are fixed on the metal supporting plates 5, so that quick heat dissipation can be realized; in general, in order to realize flexible speed change, the gear assembly 2 may include at least one intermediate wheel 22, and the gear shaft 221 of the intermediate wheel 22 next to the driven wheel 23 (i.e. the output end of the gear assembly 2) is also a part which is easy to generate heat, therefore, in this embodiment, the metal support plate 5 is also arranged at the position corresponding to the gear shaft 221 of the intermediate wheel 22, referring to fig. 2 to 4, if there are a plurality of intermediate wheels 22, it is considered that one or two gear shafts of the intermediate wheel 22 next to the driven wheel 23 are fixed to the metal support plate 5, or all the gear shafts of the intermediate wheels 22 are fixed to the metal support plate 5.

In order to facilitate the installation and the disassembly, the gearbox housing 1 of the embodiment comprises an upper housing 11 and a lower housing 12 which are detachably connected, and the metal support plate 5 comprises an upper support plate 51 arranged on the upper housing and a lower support plate 52 arranged on the lower housing.

The metal support plate 5 (the upper support plate 51 or the lower support plate 52) located on the same side of each gear shaft may be an integral structure, and the metal support plate 5 is provided with a first shaft hole for inserting the gear shaft 231 of the driven wheel 23 and a second shaft hole for inserting the gear shaft 221 of the intermediate wheel 22, as shown in fig. 4.

The metal support plate 5 (the upper support plate 51 or the lower support plate 52) located on the same side of each gear shaft may also be a split structure, the metal support plate 5 includes a first support plate and a second support plate which are independent of each other, the first support plate is provided with a first shaft hole for inserting the gear shaft 231 of the driven wheel 23, and the second support plate is provided with a second shaft hole for inserting the gear shaft 221 of the intermediate wheel 22, see fig. 5.

In order to facilitate the processing and forming, the metal supporting plate 5 and the gearbox shell 1 of the embodiment can be integrally formed by injection molding; in consideration of convenience of replacement and maintenance, the metal support plate 5 and the gear case housing 1 are also detachably and fixedly connected to one body, for example, the metal support plate 5 is fixedly embedded in the gear case housing 1 by fixing members such as screws.

In order to further improve the heat dissipation efficiency and accelerate the cooling, a heat dissipation piece (not shown in the figure) can be further arranged on the metal support plate 5 and faces the outer side of the gearbox shell 1, heat generated by movement of the blade 4 is dissipated through the heat dissipation piece after passing through the metal support plate 5, the dissipation of internal heat can be accelerated, and the risk of deformation of the gearbox shell 1 is further effectively reduced.

This embodiment is through adding metal support plate 5 in gear box casing 1 for the gear shaft is fixed on metal support plate 5, can improve gear box casing 1's bulk strength on the one hand, and on the other hand can realize quick heat dissipation through metal support plate 5, reduces the inside temperature of equipment during operation gear box, effectively prevents the aversion of gear box deformation and gear shaft, ensures the security and the reliability that equipment is suitable for, and the life of extension equipment, is applicable to various pruners or hedge trimmer equipment.

Claims

1. A gear box device for pruner, this gear box device is including

A gearbox housing (1);

the gear transmission assembly (2) is accommodated in the gearbox shell (1);

the motor (3) drives the gear transmission assembly (2) to work, the input end of the gear transmission assembly (2) is connected with the output end of the motor (3), and the output end of the gear transmission assembly (2) is connected with the pruner blade (4);

the method is characterized in that: the gear transmission assembly (2) comprises a driving wheel (21) connected with the output end of the motor (3) and a driven wheel (23) connected with the pruner blade (4), a metal support plate (5) is arranged at the position of the gear box shell (1) corresponding to the installation gear shaft, and two ends of the gear shaft of the driven wheel (23) are respectively and fixedly arranged in the metal support plate (5).

2. The gear box device for pruners of claim 1, wherein: the gear transmission assembly (2) further comprises an intermediate wheel (22), the intermediate wheel (22) is located between the driving wheel (21) and the driven wheel (23), and the motor (3) drives the pruner blade (4) to move sequentially through the driving wheel (21), the intermediate wheel (22) and the driven wheel (23).

3. The gear box device for pruners of claim 2, wherein: two ends of a gear shaft of the intermediate wheel (22) are respectively and fixedly arranged in the metal supporting plate (5).

4. The gear box device for pruners of claim 3, wherein: the metal support plates (5) positioned on the same side of each gear shaft are of an integrated structure, and a first shaft hole for the gear shaft of the driven wheel (23) to insert and a second shaft hole for the gear shaft of the intermediate wheel (22) to insert are formed in the metal support plates (5).

5. The gear box device for pruners of claim 4, wherein: the metal support plate (5) which is positioned at the same side of each gear shaft is of a split structure, the metal support plate (5) comprises a first support plate and a second support plate which are mutually independent, a first shaft hole for inserting the gear shaft of the driven wheel (23) is formed in the first support plate, and a second shaft hole for inserting the gear shaft of the intermediate wheel (22) is formed in the second support plate.

6. The gear box device for pruners of claim 1, wherein: the gearbox shell (1) comprises an upper shell and a lower shell which are detachably connected, and the metal supporting plate (5) comprises an upper supporting plate arranged on the upper shell and a lower supporting plate arranged on the lower shell.

7. The gear box device for pruners of claim 1, wherein: the metal supporting plate (5) is an aluminum alloy plate, a copper plate or an iron plate.

8. The gear box device for pruners of claim 1, wherein: the metal support plate (5) and the gearbox shell (1) are integrally formed by injection molding.

9. The gear box device for pruners of claim 1, wherein: the metal supporting plate (5) and the gearbox shell (1) are detachably and fixedly connected into a whole.

10. The gear box device for pruners of claim 1, wherein: the metal supporting plate (5) is also provided with a heat dissipation piece.