CN211202680U

CN211202680U - Clutch of water drilling machine

Info

Publication number: CN211202680U
Application number: CN201921189057.5U
Authority: CN
Inventors: 李美龙
Original assignee: Zhejiang Province Yongkang City Jindu Industry And Trade Co ltd
Current assignee: Zhejiang Province Yongkang City Jindu Industry And Trade Co ltd
Priority date: 2019-07-25
Filing date: 2019-07-25
Publication date: 2020-08-07
Anticipated expiration: 2029-07-25

Abstract

The utility model provides a clutch of water drilling machine belongs to electric tool technical field. It has solved the easy problem of hindering the people of current water drilling machine when stalling. This water rig's clutch includes the gear shaft, the gear, the elastic component, fastener and flange piece, be equipped with spacing portion on the gear shaft, the gear cover is established on the gear shaft and can be for gear revolve, gear shaft and gear correspondence connect output shaft and motor, the one end of gear shaft passes the gear in proper order, the flange piece, be connected with the fastener behind the elastic component, the flange can follow gear shaft axial back and forth movement and circumference synchronous rotation, be equipped with separation and reunion structure between flange piece and the gear, under the axial elasticity effect of elastic component, the flange piece can make separation and reunion structure keep at the bonding state. The clutch of the water drilling machine is used for power transmission of the motor and the output shaft, when the output shaft is locked, the gear is separated from the gear shaft, locked-rotor torsion of the output shaft is released, and people are prevented from being injured by recoil of the machine. The disc spring can be repeatedly deformed and extruded and can be used for multiple times.

Description

Clutch of water drilling machine

Technical Field

The utility model belongs to the technical field of electric tool, a water drilling machine, in particular to clutch of water drilling machine is related to.

Background

The water drilling machine is a common electric tool and is specially used for drilling holes, such as air conditioning holes, fire fighting pipeline holes and the like. The working principle of the drilling machine is that an electric motor provides power, an output shaft is driven to rotate after the power is transmitted by a gear mechanism, and drilling is carried out through a drill bit on the output shaft.

Because the machine torsion is great, under the condition that the drill bit blocks in the use, can make the machine recoil hurt people. At present, in order to take measures in the industry, a safety clutch is added, a friction force of a friction plate is utilized to fix a gear, when an output shaft is locked, under the condition that a drill blocking torsion force exceeds the friction force at two ends of the gear, the gear and the output shaft rotate and slip relatively, and therefore the torsion force of locked rotation of the output shaft is released, and an operator is prevented from being injured. Because of the dependence on the friction force, the friction sheet is worn when the friction plate is used for a long time, the friction force is reduced, the torque force capable of resisting is smaller and smaller, and the actual effect is poorer and poorer.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problems existing in the existing water drilling machine and providing a water drilling machine clutch with continuously stable clutch effect.

The purpose of the utility model can be realized by the following technical proposal:

the utility model provides a clutch of water drilling machine, a be used for transmitting the power of water drilling machine motor for the output shaft, a serial communication port, this clutch includes the gear shaft, the gear, the elastic component, fastener and flange piece, be equipped with spacing portion on the gear shaft, the gear cover is established on the gear shaft and can be for gear revolve, gear shaft and gear correspondence connect output shaft and motor, the one end of gear shaft passes the gear in proper order, the flange piece, be connected with the fastener behind the elastic component, the flange can be followed gear shaft axial back and forth movement and circumference synchronous rotation, be equipped with separation and reunion structure between flange piece and the gear, when separation and reunion structure combines, the gear, flange piece and gear shaft synchronous revolution, when separation and reunion structure separates, gear and flange piece rotate relatively, under the axial elasticity effect of elastic component, the flange piece can.

The fastening piece and the limiting part are used together, the gear, the flange plate and the elastic piece between the fastening piece and the limiting part are compressed in the axial direction of the gear shaft to form a linkage body, the elastic piece is compressed, the elastic force acts on the flange plate to enable the flange plate and the gear shaft to be in a combined state, and the flange plate always rotates synchronously with the gear shaft, so that the gear shaft, the gear and the flange plate are in a synchronous rotating state, and the whole body can be used as a transmission part to complete power transmission between the motor and the output shaft. In case the drill bit card is dead, the output shaft stalling, the rotational speed of gear shaft and gear is asynchronous, and the separation and reunion structure action overcomes elastic component elasticity, makes flange piece and gear separation, and gear shaft rotation each other are skidded, release output shaft stalling's torsion to bring the injury to operating personnel.

In the above clutch of a kind of water drilling machine, the said separation and reunion structure include several separation and reunion holes that run through the terminal surface of both sides of flange plate, one side of the gear facing the flange plate is provided with a plurality of guide slots corresponding to above-mentioned separation and reunion hole one-to-one, all correspond in each separation and reunion hole and be provided with the separation and reunion piece, the inner of separation and reunion piece can stretch out from the inner of guide slot and support in corresponding the guide slot, the outer end of separation and reunion piece can stretch out from the outer end of guide slot and support on the medial surface of flange plate, and the separation and reunion piece has the corresponding port that one end stretches out the guide slot at any moment, be equipped with the guide inclined plane that drives the separation and.

When the output shaft is locked, the rotating speeds of the output shaft and the gear are asynchronous, and the output shaft and the flange plate are always in a synchronous rotating state, so that the rotating speeds of the flange plate and the gear are inconsistent and rotate relatively, the clutch piece moves relative to the gear, climbs along the guide inclined plane until completely separating from the guide groove, and the flange plate and the gear are separated.

In the clutch of the water drilling machine, the clutch hole is a circular gap and is formed in the outer peripheral surface of the flange plate, the clutch piece is a steel ball, the thickness of the flange plate is smaller than the diameter of the steel ball, and the opening of the gap is smaller than the diameter of the steel ball.

In the clutch of the water drilling machine, the steel balls are positioned on the same circumference and are arranged at equal intervals, the guide grooves are arc-shaped, and the guide grooves are positioned on the same circumference.

In the clutch of the water drilling machine, the guide inclined planes are positioned at two ends of the guide grooves, and the guide inclined planes of two adjacent guide grooves are connected through the retaining groove. The cross sections of the guide groove, the guide inclined plane and the retaining groove are matched with the steel balls, and the steel balls are always positioned in an annular running groove formed by sequentially butting the guide groove, the guide inclined plane and the retaining groove and cannot fall off.

In the clutch of the water drilling machine, a first gasket is further padded between the elastic element and the flange plate.

In the clutch of the water drilling machine, the elastic part is a disc spring, a plum blossom-shaped through hole is formed in the center of the disc spring, and the gear shaft penetrates through the through hole.

In the clutch of the water drilling machine, a second gasket is also arranged between the limiting part and the gear, and a friction plate is padded between the second gasket and the gear.

In the clutch of the water drilling machine, one side of the gear facing the flange plate is provided with a concave cavity, the guide groove is formed in the bottom surface of the concave cavity, and the steel ball and the flange plate are both positioned in the concave cavity.

In the clutch of the water drilling machine, the clutch piece is a roller pin.

Compared with the prior art, the clutch of the water drilling machine is used for power transmission of the motor and the output shaft, when the output shaft is locked, the gear and the gear shaft are separated, locked-rotor torsion of the output shaft is released, and people are prevented from being injured by recoil of the machine. The disc spring can be repeatedly deformed and extruded and can be used for multiple times.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

Fig. 3 is an exploded view of the present invention.

Fig. 4 is a schematic view of the structure of the flange plate.

Fig. 5 is a schematic view of the structure of the gear.

In the figure, 1, a gear shaft; 2. a gear; 3. an elastic member; 4. a fastener; 5. a flange sheet; 6. a limiting part; 7. a bearing; 8. a second gasket; 9. a first gasket; 10. a friction plate; 11. a clutch hole; 12. a clutch member; 13. a through hole; 14. a limiting section; 15. a limiting plane; 16. a circular arc curved surface; 17. an arc-shaped notch; 18. a concave cavity; 19. a guide groove; 20. a guide ramp; 21. a holding recess; 22. and (6) perforating.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

Example 1

As shown in fig. 1-3, the clutch of the water drilling machine is used for transmitting the power of the motor of the water drilling machine to an output shaft, and the clutch comprises a gear shaft 1, a gear 2, an elastic member 3, a fastening member 4 and a flange plate 5, wherein in the embodiment, the gear shaft 1 is in transmission connection with the output shaft, and the gear 2 is in transmission connection with the motor, or vice versa.

Be equipped with spacing portion 6 on the gear shaft 1, gear 2 overlaps through bearing 7 and establishes on gear shaft 1 and can rotate for gear 2, gear 2 is passed in proper order to one end of gear shaft 1, flange piece 5, elastic component 3 back and fastener 4 threaded connection, when fastener 4 screws, together with spacing portion 6, compress tightly gear 2 between them, flange piece 5, elastic component 3 together, be equipped with first gasket 9 between flange piece 5 elastic component 3, it has second gasket 8 to fill up between gear 2 and the spacing portion 6, it has friction disc 10 to fill up between second gasket 8 and the gear 2.

As shown in fig. 4, a plurality of engaging holes 11 are formed in the periphery of the flange plate 5 at intervals, the engaging holes 11 are circular gaps, the engaging holes 11 are located on the same circumference and are arranged at equal intervals, the engaging holes 11 penetrate through the end faces of the two sides of the flange plate 5, and engaging and disengaging pieces 12 are correspondingly arranged in the engaging holes 11. In this embodiment, the clutch member 12 is a steel ball, the thickness of the flange 5 of the steel ball is smaller than the diameter of the steel ball, and the opening of the gap is smaller than the diameter of the steel ball.

The center of the flange plate 5 is provided with a through hole 13, and the shape of the through hole 13 is matched with the cross section shape of a limiting section 14 of the gear shaft 1. The flange piece 5 is sleeved on the limiting section 14 of the gear shaft 1 through the through hole 13, and the flange piece 5 can move back and forth along the limiting section 14 and synchronously rotate with the gear shaft 1. The inner wall of the through hole 13 is provided with a limiting plane 15 and an arc curved surface 16 which are alternately arranged, and an arc notch 17 is arranged at the joint of the arc curved surface 16 and the limiting plane 15, so that the assembly is convenient.

As shown in fig. 5, a concave cavity 18 is formed in one side of the gear 2 facing the flange piece 5, a plurality of circular arc-shaped guide grooves 19 are formed in the bottom surface of the concave cavity 18 at intervals, and the plurality of guide grooves 19 are located on the same circumference and correspond to the steel balls one by one. Both ends of each guide groove 19 are provided with guide slopes 20, and the guide slopes 20 of two adjacent guide grooves 19 are connected by a holding groove 21. The recesses of the cross sections of the guide groove 19, the guide inclined surface 20 and the retaining groove 21 are matched with the steel balls, and the steel balls are always positioned in an annular running groove formed by the sequential butt joint of the guide groove 19, the guide inclined surface 20 and the retaining groove 21 and cannot fall off.

The elastic member 3 is a disc spring, a quincunx through hole 22 is formed at the center of the disc spring, and the gear shaft 1 passes through the through hole 22.

After assembly, the fastening member 4 is screwed, and together with the limiting portion 6, the second gasket 8, the friction plate 10, the gear 2, the flange plate 5, the first gasket 9 and the elastic member 3 are pressed together in the axial direction of the gear shaft 1, and the elastic member 3 is compressed and deformed in the axial direction. Two ends of the steel ball simultaneously extend out from two sides of the flange piece 5, the first gasket 9 is pressed on the outer end of the steel ball under the pressure action of the elastic piece 3, and the inner ends of the steel ball are correspondingly clamped in the corresponding guide grooves 19 one by one. The gear 2 is driven by the motor to rotate, the flange piece 5 is driven by the steel balls to rotate together, and the flange piece 5 is positioned on the limiting section 14 of the gear shaft 1 and rotates synchronously with the gear shaft 1 all the time, so that the gear shaft 1 can also rotate together with the flange piece and finally drives the output shaft to output.

When the output shaft is locked, the motor continues to work, torque force is applied to force the gear 2 to rotate, the gear 2 and the flange piece 5 are caused to rotate relatively, the steel balls roll along the guide groove 19 and climb along the guide inclined plane 20, the steel balls move towards one side of the elastic piece 3, the outer end of the elastic piece pushes the first gasket 9 open, the elastic piece 3 is extruded and deformed by the first gasket 9, and after the steel balls completely climb out of the guide groove 19 and the guide inclined plane 20, the torque force of the motor is released.

Example 2

In this embodiment, the clutch member 12 is a needle roller, the engaging hole 11 of the flange plate 5 is a circular hole, and the rest is the same as that of embodiment 1.

It is to be understood that in the claims, the specification of the present invention, all "including … …" are to be interpreted in an open-ended manner, i.e. in a manner equivalent to "including at least … …", and not in a closed manner, i.e. in a manner not to be interpreted as "including … … only".

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides a clutch of water drilling machine, a be used for transmitting the power of water drilling machine motor for the output shaft, a serial communication port, this clutch includes the gear shaft, the gear, the elastic component, fastener and flange piece, be equipped with spacing portion on the gear shaft, the gear cover is established on the gear shaft and can be for gear revolve, gear shaft and gear correspondence connect output shaft and motor, the one end of gear shaft passes the gear in proper order, the flange piece, be connected with the fastener behind the elastic component, the flange can be followed gear shaft axial back and forth movement and circumference synchronous rotation, be equipped with separation and reunion structure between flange piece and the gear, when separation and reunion structure combines, the gear, flange piece and gear shaft synchronous revolution, when separation and reunion structure separates, gear and flange piece rotate relatively, under the axial elasticity effect of elastic component, the flange piece can.

2. The clutch of the water drilling machine according to claim 1, wherein the clutch structure includes a plurality of clutch holes penetrating end faces of both sides of the flange plate, one side of the gear facing the flange plate is provided with a plurality of guide grooves corresponding to the clutch holes one to one, each clutch hole is correspondingly provided with a clutch piece, the inner end of the clutch piece can extend out from the inner end of the guide hole and abut against the corresponding guide groove, the outer end of the clutch piece can extend out from the outer end of the guide hole and abut against the inner side face of the flange plate, and at any moment, the clutch piece has at least one corresponding port with one end extending out of the guide hole, and the guide groove is internally provided with a guide inclined plane for driving the clutch piece to be away from the guide groove when the clutch piece and the gear move relatively.

3. The clutch of claim 2, wherein the engaging hole is a circular notch formed on an outer circumferential surface of the flange plate, the engaging member is a steel ball, a thickness of the flange plate is smaller than a diameter of the steel ball, and an opening of the notch is smaller than the diameter of the steel ball.

4. The clutch of claim 3, wherein the steel balls are arranged on the same circumference at equal intervals, the guide grooves are circular arc-shaped, and a plurality of guide grooves are arranged on the same circumference.

5. The clutch of a water drilling machine according to claim 2, 3 or 4, wherein the guide slopes are located at both ends of the guide groove, and the guide slopes of two adjacent guide grooves are connected by the holding groove.

6. The clutch of claim 1, 2, 3 or 4, wherein a first spacer is further padded between the elastic member and the flange plate.

7. The clutch of claim 1, 2, 3 or 4, wherein the elastic member is a disc spring, a hole is formed in the center of the disc spring, and the gear shaft passes through the hole.

8. The clutch of the water drilling machine according to claim 1, 2, 3 or 4, wherein a second gasket is also arranged between the limiting part and the gear, and a friction plate is padded between the second gasket and the gear.

9. A clutch for a water drilling machine according to claim 3 or 4, characterized in that the side of the gear facing the flange plate is provided with a cavity, the guide groove is provided on the bottom surface of the cavity, and the steel ball and the flange plate are both positioned in the cavity.

10. The clutch of claim 2, wherein the clutch member is a needle roller.