CN214741479U - Vane type pneumatic motor and garden dressing tool - Google Patents

Abstract

The utility model discloses a vane type pneumatic motor and gardens repair tools relates to gardens repair equipment field, include: the rotor is eccentrically arranged in the closed cavity, a plurality of square grooves are formed in the circumference of the rotor, rectangular blades capable of freely sliding along the radial direction of the rotor are arranged in the square grooves, a main air inlet channel used for providing high-pressure gas into the closed cavity is arranged on the sealing element, an exhaust port used for exhausting the high-pressure gas after acting is formed in the stator, and a gap used for allowing part of the high-pressure gas to flow into the square grooves is formed between the blades and the sealing element; the utility model discloses have the gap between well blade and the sealing member, when high-pressure gas got into square groove inside and outwards promoted the blade, the upper end and the sealing member contactless of blade have reduced frictional force between the two, have not only protected the blade, make the blade more convenient for be released moreover, just the utility model discloses the device has simple structure, advantage with low costs.

Description

Vane type pneumatic motor and garden dressing tool

Technical Field

The utility model relates to a gardens repair equipment field especially relates to a vane type air motor and gardens repair instrument.

Background

In daily life, green lands are more and more, a pleasant feeling is brought to people when repairing a new green land, and large-scale green land trimming and maintenance need to cost a large amount of labor force and use various garden tools.

At present, the garden tools used in China mainly comprise: manual garden tool, electronic garden tool and fuel powered garden tool.

Manual garden tools, which work with manually used manual garden tools, are only suitable for use in small areas.

The electric garden tool is divided into a direct current electric garden tool and an alternating current electric garden tool, the direct current electric garden tool is convenient to use and pollution-free, and cannot be widely used at present due to the limitation of various factors; the alternating current electric garden tool is supplied with alternating current, a power line is required to be connected with an alternating current power supply, the use is inconvenient, electric shock is also caused, and each electric garden tool with different functions needs one motor, namely one working head needs one motor.

This is also true of fuel powered garden tools, each of which requires a fuel powered engine.

In the existing garden tools, power is transmitted to a working head through hard connection or transmission of a belt and a chain. Therefore, each working head needs to be provided with a power source and a power transmission mechanism, and the working heads have corresponding power sources and power transmission mechanisms, so that if a green land needs to be trimmed, a plurality of garden tools with different functions are needed to finish the trimming.

The utility model discloses a vane type pneumatic motor, which comprises a cylinder, a containing cavity arranged in the cylinder, a rotor arranged in the containing cavity, a plurality of vanes arranged on the rotor, wherein the vanes comprise a top part contacting with the inner wall of the cylinder and a lower part arranged integrally with the top part, a vent groove arranged along the length direction of the vanes is arranged on the bottom edge of the lower part, a plurality of vane grooves are arranged on the rotor, the vanes are arranged in the vane grooves, based on the description of the vane type pneumatic motor in the prior art, sealing covers are arranged at two ends of the cylinder, an arc groove is arranged on the sealing cover corresponding to the lower part of the vanes for providing high-pressure gas to the lower part of the vanes to push out the vanes, structure setting in the combination file, high-pressure gas in the arc wall can directly get into the air channel, make high-pressure gas more convenient release the blade, however, the structural strength of blade lower part will be reduced in the setting of its air channel, make the blade lower part damage more easily, and then reduced the life of blade, and need the staff more frequent to the blade inspect or change, in addition, the blade is at the in-process of being released, its both ends can produce relative sliding with sealed lid, frictional force that produces during relative sliding will make the blade by wearing and tearing, the life of blade has been reduced.

Therefore, there is a need for a vane-type pneumatic motor that can be pushed out quickly and easily, has low friction when being pushed out, and has a long service life, and a gardening implement using the same.

Disclosure of Invention

The utility model aims at providing a vane type air motor and gardens finishing tool to solve the problem that above-mentioned prior art exists, make the blade can be by convenient release fast, the frictional force that receives when the blade is released is low, blade long service life moreover.

In order to achieve the above object, the utility model provides a following scheme: the utility model provides a vane type pneumatic motor, including cylindrical stator, columniform rotor and sealing member, the both ends of stator with the sealing member is connected and is formed columniform airtight cavity, rotor eccentric settings is in the airtight cavity, the height of rotor with the height of airtight cavity is the same, the both ends of rotor with the sealing member rotates to be connected and one end wherein stretches out the sealing member forms the output shaft, rotor has seted up a plurality of square grooves that run through the rotor both ends in week, the square groove is along the radial setting of rotor, be provided with in the square groove can follow the radial free gliding blade of rotor, the blade is the cuboid, be provided with on the sealing member and be used for to provide high-pressure gas's main inlet channel in the airtight cavity, set up the gas vent that supplies the high-pressure gas after doing work to discharge on the stator, and a gap for allowing part of high-pressure gas to flow into the square groove is formed between the blade and the sealing element.

Preferably, the air outlet of the main air inlet channel is communicated with the upper end of the closed chamber, an auxiliary air inlet channel is further arranged in the sealing element, the air inlet of the auxiliary air inlet channel is communicated with the main air inlet channel, the air outlet of the auxiliary air inlet channel is communicated with the lower end of the closed chamber, and the air outlet of the auxiliary air inlet channel is arranged corresponding to the air outlet of the main air inlet channel.

Preferably, a corner of one end of the blade close to the rotor is provided with a notch.

Preferably, the normal of the tangent plane of the notch is parallel to the plane along which the blade is distributed in its direction of rotation.

Preferably, the material of the blade is phenolic resin with wear resistance.

Preferably, the sealing member is a protective shell, a certain gap is formed between the inner wall of the protective shell and the outer wall of the stator, and a through hole is formed in the protective shell at a position deviating from the exhaust port.

Preferably, the garden trimming tool using the blade type pneumatic motor comprises a high-pressure gas generating device, a high-pressure gas pipe, a joint pipe, the blade type pneumatic motor and a working head which are sequentially connected, wherein an opening and closing switch is arranged at a gas outlet of the joint pipe, a gas inlet of the main gas inlet channel is detachably mounted on the gas outlet of the joint pipe, and an output shaft of the blade type pneumatic motor is connected with the working head and drives the working head to operate.

Preferably, the high-pressure air pipe comprises a main pipeline and a branch pipeline vertically connected to the end part of the main pipeline, the branch pipeline is horizontally arranged, a plurality of air outlets are arranged on the branch pipeline, the main air inlet channels of the blade type pneumatic motors are connected with the air outlets of the branch pipeline through the joint pipes, and a plurality of working heads with different functions are respectively connected with output shafts of the blade type pneumatic motors;

preferably, the device also comprises a support used for fixing the main pipeline and the branch pipeline, the support is connected with the high-pressure gas generating device, and the height of one end of the support, corresponding to the branch pipeline, is higher than that of one end of the support, corresponding to the main pipeline.

Preferably, the high-pressure gas generating device comprises an air compressor and a gas tank, the air compressor is arranged above the gas tank, an air outlet of the air compressor is connected with an air inlet of the gas tank, an air outlet of the gas tank is connected with an air inlet of the high-pressure gas pipe, a travelling wheel is arranged at the bottom of the gas tank, and a pressure gauge and a safety valve are arranged on the gas tank.

The utility model discloses for prior art gain following technological effect:

1. in the utility model, a gap for part of high-pressure gas to flow to the inside of the square groove is arranged between the blade and the sealing element, the arc groove in the prior art is not needed, and after the high-pressure gas enters the closed cavity, a part of the high-pressure gas flows to the bottom of the square groove through the gap, namely the surface of the square groove close to the central axis of the rotor, when the high-pressure gas moves to the bottom of the square groove, the high-pressure gas can be squeezed into the gap between the bottom of the square groove and the blade, in the process of extruding the high-pressure gas, the purpose of pushing the blade from the square groove to the direction far away from the rotor is realized, at the in-process that the blade was promoted by high-pressure gas, because the existence in gap between blade and sealing member, all with the sealing member contact at blade both ends among the prior art relatively, the utility model discloses reduced the area of contact of blade and sealing member, reduced the frictional force that both produced, prolonged the life of blade.

2. In the utility model, the gas outlet of the main gas inlet channel is communicated with the upper end of the closed chamber, the sealing element is internally provided with an auxiliary gas inlet channel, the gas inlet of the auxiliary gas inlet channel is communicated with the main gas inlet channel, the gas outlet is communicated with the lower end of the closed chamber, the gas outlet of the auxiliary gas inlet channel is correspondingly arranged with the gas outlet of the main gas inlet channel, when the blade is pushed out from the square groove by high-pressure gas, the high-pressure gas entering from the main gas inlet channel can apply a downward force on the upper end of the blade, and then the gravity of the blade is added, so that the friction between the lower end of the blade and the sealing element is increased, the auxiliary gas inlet channel is arranged at the position corresponding to the main gas inlet channel in the application, the high-pressure gas blows upwards to provide an upward force for the blade, namely, the downward total force applied by the blade to the sealing element is reduced, and the friction between the main gas inlet channel and the main gas inlet channel is reduced, thereby reducing the wear rate of the blade.

3. The utility model discloses well blade is close to the bight of the one end of rotor is provided with the incision, blow in the back from the upper end of airtight cavity when high-pressure gas, one of them part blows to the square trough inside through the gap, the high-pressure draught that gets into the square trough inside can at first contact notched tangent plane, apply a component force along the blade by the direction of release to the blade, this component force makes the blade by release certain distance, release certain distance back, high-pressure gas is more convenient, the quick clearance between entering square trough bottom and blade, and then make high-pressure gas can be more quick release the blade.

4. The utility model discloses well sealing member is the protection casing, protection shells inner wall with the outer wall of stator has certain clearance, the position of skew gas vent is provided with the through-hole on the protection casing, and the existence of protection casing provides better protection effect for parts such as its inside stator and rotor, and in addition because the through-hole on the protection casing does not correspond with the position of gas vent, and high-pressure gas is followed stator discharge back, earlier through the clearance of stator and protection casing, is discharged by the through-hole on the protection casing again, and the flow that high-pressure gas long distance and buckle has reduced its flow velocity, and then has reduced the noise that produces when exhausting.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

FIG. 1 is a schematic structural diagram of a vane-type pneumatic motor according to the present invention;

FIG. 2 is an enlarged view of the structure at A in FIG. 1;

FIG. 3 is a schematic structural view of the blade of the present invention;

FIG. 4 is a top view of the internal structure of the vane-type pneumatic motor of the present invention;

FIG. 5 is a schematic structural view of the garden trimming tool of the present invention;

wherein, 1, stator; 2. a rotor; 3. a square groove; 4. a blade; 5. an output shaft; 6. a gap; 7. cutting; 8. a main intake passage; 9. a protective housing; 10. an exhaust port; 11. a bearing; 12. an air compressor; 13. a safety valve; 14. a pressure gauge; 15. a gas tank; 16. a high-pressure air pipe; 17. a support; 18. and (4) a joint pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model aims at providing a vane type air motor and gardens finishing tool to solve the problem that prior art exists, make the blade can be by quick convenient release, the frictional force that receives when the blade is released is low, blade long service life moreover.

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.

Referring to fig. 1-4, a vane type pneumatic motor is provided, which includes a cylindrical stator 1, a cylindrical rotor 2 and a sealing member, wherein two ends of the stator 1 are connected to the sealing member to form a cylindrical sealed cavity, the rotor 2 is eccentrically disposed in the sealed cavity, the height of the rotor 2 is the same as that of the sealed cavity, two ends of the rotor 2 are rotatably connected to the sealing member through a bearing 11, and one end of the rotor 2 extends out of the sealing member to form an output shaft 5, the rotor 2 is circumferentially provided with a plurality of square grooves 3 penetrating through two ends of the rotor 2, the square grooves 3 are radially disposed along the rotor 2, vanes 4 capable of freely sliding along the radial direction of the rotor 2 are disposed in the square grooves 3, the vanes 4 are rectangular, two planes of the vanes 4 distributed along the rotation direction of the rotor 2 are attached to the inner wall of the square grooves 3, the sealing member is provided with a main air inlet channel 8 for providing high-pressure air into the sealed cavity, the stator 1 is provided with an exhaust port 10 for discharging high-pressure gas after acting, a plane where the axis of the rotor 2 and the axis of the stator 1 are located is used as a dividing plane, the closed cavity is divided into two chambers, the air inlet and the exhaust port 10 of the main air inlet channel 8 are located in different cavities, a gap 6 is formed between the blade 4 and the sealing element, namely the height of the blade 4 along the axis of the rotor 2 is smaller than that of the square groove 3 along the axis of the rotor 2, the gap 6 and the inner wall of the square groove 3 form a channel for part of the high-pressure gas to flow into the square groove 3, after part of the high-pressure gas flows into the square groove 3 through the gap 6, the high-pressure gas can be squeezed into the gap between the bottom of the square groove 3 and the blade 4, in the squeezing process of the high-pressure gas, the purpose of pushing the blade 4 from the square groove 3 to the direction far away from the rotor 2 is realized, and because one end of the blade 4 is not in contact with the sealing element, the contact area between the blade 4 and the sealing element is reduced, the generation of friction force is reduced, the protection of the blades 4 is facilitated, and the service life of the blades 4 is prolonged.

In order to ensure that high-pressure gas entering the closed chamber enters the bottom of the square groove 3 through a gap 6 between the blade 4 and the sealing element more quickly to push out the blade 4, the gas outlet of the main gas inlet channel 8 can be communicated with the upper end of the closed chamber, when the main gas inlet channel 8 is positioned at the upper end of the closed chamber, the downward force is generated on the blade 4 by the downward-blowing high-pressure gas, and the self gravity of the blade 4 is added to increase the friction force between the lower end of the blade 4 and the sealing element, therefore, an auxiliary gas inlet channel can be arranged in the sealing element, the gas inlet of the auxiliary gas inlet channel is communicated with the main gas inlet channel 8, the gas outlet is communicated with the lower end of the closed chamber, the gas outlet of the auxiliary gas inlet channel is arranged corresponding to the gas outlet of the main gas inlet channel 8, the high-pressure gas in the auxiliary gas inlet channel blows upwards to provide an upward force for the blade 4, and the downward total force applied to the sealing element by the blade 4 is reduced, the friction force between the two is reduced, the abrasion rate of the blade 4 is reduced, and the service life of the blade 4 is prolonged; when there is certain fitting gap between blade 4 lower extreme and the sealing member, the high-pressure gas who gets into from vice inlet channel also has partly can enter into square groove 3 inside through this fitting gap to the cooperation upper end gets into the high-pressure gas of the inside of square groove 3, and is quick to push out blade 4.

The corner part of one end, close to the rotor 2, of the blade 4 is provided with a notch 7, the corner part notch 7 close to one side of the gap 6 can be arranged or the notches 7 at two corner parts are arranged, when the corner part notch 7 close to one side of the gap 6 is close to, high-pressure gas is blown into the square groove 3 from the upper end of the closed cavity, one part of the high-pressure gas is blown into the square groove 3 through the gap 6, the high-pressure gas flow entering the square groove 3 firstly contacts the tangent plane of the notch 7 before being squeezed into the gap between the bottom of the square groove 3 and the blade 4, a component force along the pushing direction of the blade 4 is applied to the blade 4, the blade 4 is pushed out for a certain distance by the component force, and after the certain distance is pushed out, the high-pressure gas can more conveniently and rapidly enter the gap between the bottom of the square groove 3 and the blade 4, and further the blade 4 is pushed out more rapidly; when two equal incisions 7 in bight set up, and when having certain fitting clearance between blade 4 lower extreme and the sealing member, two bights all can receive high-pressure gas's impact, and then mutually support and release certain distance with blade 4, and this kind of mode makes blade 4's the speed of releasing faster.

The normal line of the tangent plane of the notch 7 is parallel to the plane of the blade 4 distributed along the rotation direction, when high-pressure gas acts on the tangent plane, the high-pressure gas only generates force in the pushing direction and the vertical direction of the blade 4 to the blade 4, and does not generate component force in other directions, so that the problem that the force in the direction towards the inner wall of the square groove 3 is generated, and the friction force between the blade 4 and the square groove 3 is increased is solved.

The shape of the notch 7 is not limited to a plane, and may be an arc surface or a step surface, etc.

The material of the blade 4 is a high molecular compound of phenolic resin, and the blade has the characteristics of light weight, wear resistance and high hardness.

The sealing member is protection casing 9, for the internals provides a good protection, be provided with certain clearance with protection casing 9 inner wall and stator 1's outer wall, and the skew gas vent 10's on the protection casing 9 position is provided with the through-hole, after high-pressure gas discharges from stator 1's gas vent 10, earlier through stator 1 and protection casing 9's clearance, discharge by the through-hole on the protection casing 9 again, high-pressure gas long distance and the flow of buckling have reduced its flow velocity, and then the noise that produces when having reduced the exhaust.

As shown in figure 5, the garden trimming tool using the blade type pneumatic motor comprises a high-pressure gas generating device, a high-pressure gas pipe 16, a joint pipe 18, the blade type pneumatic motor and a working head which are sequentially connected, wherein the high-pressure gas generating device, the high-pressure gas pipe 16 and the joint pipe 18 form a high-pressure gas generating and conveying system, an opening and closing switch is arranged at a gas outlet of the joint pipe 18, a gas inlet of a main gas inlet channel 8 is detachably arranged on a gas outlet of the joint pipe 18, high-pressure gas can be conveyed into the pneumatic blade type motor by opening the opening and closing switch, an output shaft 5 of the pneumatic blade type motor is connected with the working head and drives the working head to operate, and when the working head is not used any more, the opening and closing switch can be closed, the blade type pneumatic motor is detached, and the garden trimming tool is convenient to transport.

In order to realize the multi-purpose of one machine, the high-pressure air pipe 16 comprises a main pipeline and a branch pipeline vertically connected to the end part of the main pipeline, the branch pipeline is horizontally arranged, a plurality of air outlets are arranged on the branch pipeline, the main air inlet channels 8 of the blade type pneumatic motors are connected with the air outlets of the branch pipeline through joint pipes 18, and a plurality of working heads with different functions are respectively connected with the output shafts 5 of the blade type pneumatic motors.

The length of the joint pipe 18 may be set to various lengths so as to move the position of the vane-type air motor without moving the high-pressure gas generating apparatus.

In order to ensure the stability of the pipeline when transmitting high-pressure gas, a support 17 is arranged below the main pipeline and the branch pipelines, the support 17 is connected with the high-pressure gas generating device, the height of one end, corresponding to the branch pipeline, of the support 17 is higher than that of one end, corresponding to the main pipeline, of the support 17, the output head is lifted by a certain height, and therefore workers can install the blade type pneumatic motor conveniently.

The high-pressure gas generating device comprises an air compressor 12 and a gas tank 15, wherein the air compressor 12 is arranged above the gas tank 15, a gas outlet of the air compressor 12 is connected with a gas inlet of the gas tank 15, a gas outlet of the gas tank 15 is connected with a gas inlet of a high-pressure gas pipe 16, a travelling wheel is arranged at the bottom of the gas tank 15, and a pressure gauge 14 and a safety valve 13 are arranged on the gas tank 15.

In the actual use process: the air compressor 12, the air tank 15, the high-pressure air pipe 16, the joint pipe 18, the vane type pneumatic motor and the working heads are assembled in sequence, different working heads can be selected and assembled according to needs, and the working heads with the mowing function can be used for lawn trimming on greenbelts; the shrub trimming can be connected with a working head with a shrub cutting function; the soil turning can be connected with a working head with a soil turning function; the saw tree can be connected with a working head with a chain saw function; a working head with a water pump function can be connected for irrigation; the blowing and sucking ground can be connected with a working head with a blowing and sucking function and the like; opening an on-off switch of the joint pipe 18 corresponding to the working head according to the working head required to be used;

starting an air compressor 12, compressing air by the air compressor 12, then sequentially passing through an air tank 15, a high-pressure air pipe 16 and a connector pipe 18, then entering a main air inlet channel 8 and an auxiliary air inlet channel of the blade type pneumatic motor, respectively blowing the air from the upper end and the lower end of a closed cavity to the inside of the square groove 3, blowing part of high-pressure air flow blown in from the upper end to the inside of the square groove 3 through a gap 6 between the blade 4 and a protective shell 9, firstly contacting the high-pressure air flow entering the inside of the square groove 3 with the tangent plane of a notch 7, applying a component force along the pushing direction of the blade 4 to the blade 4, pushing the blade 4 out for a certain distance, enabling the high-pressure air flow to flow into a cavity between the blade 4 and a rotor 2 in the pushing process of the blade 4, applying a force along the pushing direction of the blade 4 to the blade 4, pushing the blade 4 out until one end of the blade 4 is abutted against the inner wall of a stator 1, and forming a working cavity between the adjacent pushed blades 4, the other part of the high-pressure airflow and the high-pressure airflow blown in from the lower end enter the working chamber and push the blades 4 to rotate, and the high-pressure air after acting is discharged from the exhaust port 10; when high-pressure airflow blown in from the lower end enters the working chamber, an upward force can be provided for the blades 4, the downward total force borne by the blades 4 is reduced, and the friction force between the blades 4 and the inner wall of the lower end of the closed chamber is reduced;

the blades 4 rotate to drive the rotor 2 to rotate, the rotor 2 rotates to drive the output shaft 5 to rotate, the output shaft 5 rotates to drive the working head to operate, and workers trim gardens through the operating working head.

The adaptability that carries out according to actual demand all is in the protection scope of the utility model.

It should be noted that, as is obvious to a person skilled in the art, the invention is not limited to details of the above-described exemplary embodiments, but can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

The utility model discloses a concrete example is applied to explain the principle and the implementation mode of the utility model, and the explanation of the above example is only used to help understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.

Claims (10)

1. The utility model provides a vane type pneumatic motor, includes the stator of cylinder, columniform rotor and sealing member, the both ends of stator with the sealing member is connected and is formed columniform airtight cavity, rotor eccentric settings is in the airtight cavity, the height of rotor with the height of airtight cavity is the same, the both ends of rotor with the sealing member rotates to be connected and wherein one end stretches out the sealing member forms the output shaft, rotor circumference is upwards seted up a plurality of and is run through the square groove at rotor both ends, the square groove is followed the radial setting of rotor be provided with in the square groove can follow the radial free gliding blade of rotor, the blade is the cuboid, its characterized in that, be provided with on the sealing member and be used for to provide high-pressure gas's main inlet channel in the airtight cavity, set up the gas vent that supplies the high-pressure gas after doing work to discharge on the stator, and a gap for allowing part of high-pressure gas to flow into the square groove is formed between the blade and the sealing element.

2. The pneumatic vane motor as claimed in claim 1, wherein the outlet of the main air inlet channel communicates with the upper end of the sealed chamber, a secondary air inlet channel is further disposed in the sealing member, the inlet of the secondary air inlet channel communicates with the main air inlet channel, the outlet of the secondary air inlet channel communicates with the lower end of the sealed chamber, and the outlet of the secondary air inlet channel is disposed corresponding to the outlet of the main air inlet channel.

3. The vane air motor as recited in claim 2, wherein a corner of the one end of the vane adjacent to the rotor is provided with a notch.

4. The vane air motor as claimed in claim 3, wherein the normal of the tangential plane of the cut-out is parallel to the plane of the vane along the rotation direction thereof.

5. The vane-type air motor as claimed in claim 4, wherein the vane is made of phenolic resin with wear resistance.

6. The pneumatic vane motor as claimed in claim 1, wherein the sealing member is a protective housing having a gap between an inner wall thereof and an outer wall of the stator, and the protective housing is provided with a through hole at a position offset from the exhaust port.

7. A garden trimming tool applying the vane type pneumatic motor as claimed in any one of claims 1 to 6, characterized by comprising a high-pressure gas generating device, a high-pressure gas pipe, a joint pipe, the vane type pneumatic motor and a working head which are connected in sequence, wherein an opening and closing switch is arranged at a gas outlet of the joint pipe, a gas inlet of the main gas inlet channel is detachably mounted on the gas outlet of the joint pipe, and an output shaft of the vane type pneumatic motor is connected with the working head and drives the working head to operate.

8. The gardening trimming tool according to claim 7, wherein the high pressure air pipe comprises a main pipe and a branch pipe vertically connected to the end of the main pipe, the branch pipe is horizontally arranged, the branch pipe is provided with a plurality of air outlets, the main air inlet channels of the vane-type pneumatic motors are connected to the air outlets of the branch pipe through the joint pipes, and a plurality of working heads with different functions are respectively connected to the output shafts of the vane-type pneumatic motors.

9. The gardening finishing tool according to claim 8, further comprising a bracket for fixing the main pipe and the branch pipe, the bracket being connected to the high pressure gas generating means, wherein the bracket has a height corresponding to an end of the branch pipe higher than a height corresponding to an end of the main pipe.

10. The gardening tool of claim 9, wherein the high pressure gas generating device comprises an air compressor and a gas tank, the air compressor is arranged above the gas tank, an air outlet of the air compressor is connected with an air inlet of the gas tank, an air outlet of the gas tank is connected with an air inlet of the high pressure gas pipe, a walking wheel is arranged at the bottom of the gas tank, and a pressure gauge and a safety valve are arranged on the gas tank.

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