CN116690477A - Opening screwing device - Google Patents

Abstract

The invention provides an opening tightening device, which comprises a shell and a transmission assembly arranged on the shell, wherein the transmission assembly comprises a driving gear, an opening gear, a transmission assembly and a driving piece for driving the driving gear to rotate, and the driving piece comprises a driving gear, a driving gear and a driving gear, wherein the driving gear is arranged on the driving assembly, and the driving gear is arranged on the driving assembly and comprises a driving gear and a driving piece. The driving gear and the opening gear are both rotatably arranged in the shell; the transmission assembly is arranged between the driving gear and the opening gear and is used for connecting the driving gear and the opening gear in a transmission manner; the shell is provided with a yielding notch corresponding to the opening on the opening gear; the shell is provided with a reset component which defines that the driving gear rotates positively when the tightening device is in a working state; when the driving gear rotates reversely and the opening is aligned with the yielding notch, the reset component acts on the transmission component to stop the driving gear. The reset component provided by the invention can enable the opening of the opening screwing device to be aligned with the yielding gap rapidly and accurately, so that the assembly and separation efficiency of the screw rod and the opening screwing device is improved, and the working difficulty is reduced.

Description

Opening screwing device

Technical Field

The invention relates to the technical field of electric tools, in particular to an opening tightening device.

Background

The common spanner consumes time and labor when the nut is screwed, so that the ratchet spanner is produced, but when the ratchet spanner is used, the screw rod needs to pass through the ratchet spanner, and after the use is finished, the ratchet spanner also needs to be taken out along the axial direction of the screw rod. For the use scenes with larger length such as the suspender, the defect of the ratchet wrench is obvious, and the construction efficiency is influenced.

Then, open ended wrenches are emerging on the market, facilitating the separation of the screw from the wrench by means of the open ended gears. The open gear is often arranged on the shell, a notch corresponding to the opening of the open gear is arranged on the shell, and when the nut is screwed, the opening of the open gear rotates to correspond to the notch, and then the screw rod can be separated from the wrench. However, in the practical use process, it is found that it is difficult to determine the positions of the opening gear and the notch on the housing, that is, it is difficult to precisely align the opening with the notch, thereby affecting the separation efficiency of the screw rod and the wrench in the previous construction and the installation efficiency of the screw rod and the wrench in the next construction.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide an opening tightening device which has a simple structure, is convenient to operate and can effectively improve the working efficiency.

The embodiment of the invention is realized by the following technical scheme:

an opening screwing device comprises a shell and a transmission assembly arranged on the shell, wherein the transmission assembly comprises a driving gear, an opening gear, a transmission assembly and a driving piece used for driving the driving gear to rotate, and the driving piece comprises a driving gear, a driving piece and a driving piece, wherein the driving gear is arranged on the driving piece, and the driving piece is arranged on the driving gear, and comprises a driving gear, a driving gear and a driving piece. The driving gear and the opening gear are both rotatably arranged in the shell; the transmission assembly is arranged between the driving gear and the opening gear and is used for connecting the driving gear and the opening gear in a transmission manner; a yielding notch corresponding to the opening on the opening gear is arranged on the shell; the shell is provided with a reset component, and the driving gear is defined to rotate positively when the tightening device is in a working state; when the driving gear is reversed and the opening is aligned with the yielding gap, the reset assembly acts on the transmission assembly to stop the driving gear.

According to a preferred embodiment, the reset assembly comprises a swing buckle rotatably mounted on the shell, and the end face of the driving gear is provided with a clamping groove matched with the swing buckle; the swing buckle is characterized by further comprising a torsion spring arranged between the swing buckle and the shell, when the driving gear is reversed and the opening is aligned with the yielding notch, the torsion spring acts on the swing buckle to enable the swing buckle to be clamped to the clamping groove so that the driving gear stops rotating.

According to a preferred embodiment, the end face of the driving gear is provided with a containing groove, and the swing buckle is in sliding fit with the inner side face of the containing groove; the clamping groove is arranged on the inner side surface of the accommodating groove.

According to a preferred embodiment, the driving gear has a pitch diameter D1 and the opening gear has a pitch diameter D2; d1/d2=n, N being a positive integer.

According to a preferred embodiment, the number of the clamping grooves is N, and the N clamping grooves are circumferentially and uniformly distributed on the inner side surface of the accommodating groove.

According to a preferred embodiment, further comprising a swinging member and an inductive switch cooperating with the swinging member, wherein: the swinging piece and the swinging buckle synchronously swing; when the swing buckle is clamped into the clamping groove and the opening is aligned with the yielding notch, the swing piece moves to the sensing position of the sensing switch.

According to a preferred embodiment, the swing buckle is rotatably mounted to the shell through a rotating shaft, a swing groove is formed in the inner side surface of the shell, and the rotating shaft is arranged at the bottom of the swing groove; the torsion spring is sleeved on the rotating shaft; one end of the torsion spring is abutted to the swing buckle, and the other end of the torsion spring is abutted to the inner wall of the swing groove.

According to a preferred embodiment, the opening is provided with a split nut sleeve embedded therein.

According to a preferred embodiment, the pitch diameter of the drive gear and the pitch diameter of the opening gear are equal.

According to a preferred embodiment, the telescopic device further comprises a telescopic mechanism, and the housing is mounted to a telescopic end of the telescopic mechanism.

According to a preferred embodiment, the opening tightening device comprises a control module, and the inductive switch is in communication connection with the control module.

According to a preferred embodiment, the transmission assembly comprises two transmission gears; the two transmission gears are rotatably arranged in the shell; the two transmission gears are arranged between the driving gear and the opening gear and are respectively meshed with the driving gear and the opening gear.

The technical scheme of the embodiment of the invention has at least the following advantages and beneficial effects:

the reset component provided by the invention can enable the opening of the opening screwing device to be aligned with the yielding gap rapidly and accurately, so that the assembly and separation efficiency of the screw rod and the opening screwing device is improved, and the working difficulty is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a transmission assembly according to an embodiment of the present invention;

FIG. 2 is an enlarged schematic view of a portion of the structure shown at A in FIG. 1;

fig. 3 is a schematic perspective view of an opening tightening device according to an embodiment of the present invention;

fig. 4 is a schematic front view of an opening tightening device according to an embodiment of the present invention;

fig. 5 is a schematic perspective view of an assembled swing member and an inductive switch according to an embodiment of the present invention.

Icon: 11. a drive gear; 111. a receiving groove; 1111a, a first side; 1111b, a second side; 112. a clamping groove; 12. a transmission gear; 121. a bearing; 122. a fixed shaft; 13. a split gear; 131. an open nut sleeve; 132. an opening; 14. a case main body; 141. a swinging groove; 142. a square shaft; 15. a cover; 16. an inductive switch; 17. a driving member; 18. a swinging member; 21. swing buckle; 22. a torsion spring; 23. a rotating shaft; 3. an expansion bolt; 31. a screw rod; 32. a lock nut; 4. and giving way gaps.

Detailed Description

For a better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1 to 5, an opening tightening device includes a housing and a transmission assembly mounted on the housing, the transmission assembly includes a driving gear 11, an opening gear 13, two transmission gears 12, and a driving member 17 for driving the driving gear 11 to rotate, wherein: the driving gear 11, the opening gear 13 and the two transmission gears 12 are all rotatably arranged in the shell; the two transmission gears 12 are arranged between the driving gear 11 and the opening gear 13 and meshed with the driving gear 11 and the opening gear 13 respectively; the driving piece 17 is fixedly arranged outside the shell; the shell is provided with a yielding notch 4 corresponding to an opening 132 on the opening gear 13; the shell is provided with a reset component, and the driving gear 11 rotates positively when the tightening device is in a working state; when the drive gear 11 is inverted and the opening 132 is aligned with the relief notch 4, the reset assembly acts on the drive assembly to stall the drive gear 11.

In this embodiment, the housing includes a housing main body 14 and a housing cover 15, and the driving gear 11, the opening gear 13, and the two transmission gears 12 are rotatably mounted in the housing main body 14, and the driving member 17 is mounted outside the housing main body 14. As shown in fig. 1, 3 and 4, the driving member 17 is preferably a motor. The output shaft of the drive 17 here extends into the housing body 14 and is connected to the drive gear 11 via a square shaft 142. In use, the driver 17 drives the drive gear 11 in rotation, the drive gear 11 transmitting torque to the opening gear 13 via the transfer gear 12. As shown in fig. 1, two transmission gears 12 are provided to ensure that at least one transmission gear 12 meshes with the opening gear 13 at the same time, and power interruption of the transmission assembly can be avoided. In the present embodiment, a fixed shaft 122 is provided in the case main body 14, and the transmission gear 12 is rotatably mounted to the fixed shaft 122 through a bearing 121.

Specifically, the expansion bolts 3 shown in fig. 3 and 4 are exemplified. The expansion bolt 3 comprises a screw rod 31, a lock nut 32 is connected to the screw rod 31 in a threaded manner, the upper end of the expansion bolt 3 is embedded into a preset hole in use, and then the expansion bolt 3 can be fixed in the hole by rotating the lock nut 32. In this embodiment, the opening 132 of the opening gear 13 is aligned with the relief notch 4, then the screw rod 31 is inserted into the opening gear 13 through the relief notch 4 and the opening 132 and is coaxial with the opening gear 13, and then the opening tightening device is lifted upwards to enable the lock nut 32 to be inserted into the opening 132 to form a clamping connection; then, the driving piece 17 is started to enable the driving gear 11 to rotate positively, namely the tightening device is in a working state (the lock nut 32 is screwed upwards) until the lock nut 32 is installed, and the driving piece 17 stops running; the operator moves the tightening device downward such that the lock nut 32 and the opening 132 are disengaged; and then the driving piece 17 is started again, at the moment, the driving piece 17 is reversed to drive the driving gear 11 to rotate reversely, when the opening 132 is aligned with the yielding gap 4, the reset component acts on the transmission component to stop the driving gear 11, the driving piece 17 stops running, and at the moment, the worker moves the opening screwing device to enable the screw rod 31 to be separated from the opening screwing device through the opening 132 and the yielding gap 4 in sequence. In this embodiment, the opening 132 and the yielding gap 4 can be aligned quickly and accurately by the resetting component, so that the assembly and separation efficiency of the screw rod 31 and the opening tightening device are improved, and the working difficulty is reduced.

Further, as shown in fig. 1 and 2, the reset assembly includes a swing buckle 21 rotatably mounted to the housing through a rotation shaft 23, and the end surface of the driving gear 11 is configured with a clamping groove 112 matched with the swing buckle 21; the device further comprises a torsion spring 22 arranged between the swing buckle 21 and the shell, when the driving gear 11 is reversed and the opening 132 is aligned with the yielding notch 4, the torsion spring 22 acts on the swing buckle 21 so that the swing buckle 21 can be clamped to the clamping groove 112 to stop the driving gear 11. Further, an accommodating groove 111 is formed on the end surface of the driving gear 11, and the swing buckle 21 is slidably attached to the inner side surface of the accommodating groove 111; the clamping groove 112 is disposed on the inner side surface of the accommodating groove 111. Specifically, as shown in fig. 2 and 5, the swing buckle 21 is in a block shape, an arc convex surface is configured on an end surface clamped with the clamping groove 112, and an arc concave surface having the same radius as the arc convex surface and being adapted to the bottom surface of the clamping groove 112 is configured. The accommodating groove 111 is used for letting out the swing buckle 21, so that spatial interference between the swing buckle 21 and the driving gear 11 is avoided, and the design that the swing buckle 21 is embedded in the accommodating groove 111 is compact in structure, the space occupied by the driving gear 11 is used as an accommodating space of a reset assembly, and the size of the opening screwing device can be reduced; at the same time, the weight of the driving gear 11 can be reduced to a certain extent. In this embodiment, when the swing buckle 21 is fully clamped with the clamping groove 112, the arc concave surface is attached to the arc convex surface. The structural design of the cooperation of the arc-shaped concave surface and the arc-shaped convex surface can improve the precision of the cooperation of the swing buckle 21 and the clamping groove 112, and further improve the relative position precision of the opening 132 and the avoidance notch when the opening 132 and the avoidance notch are in an aligned state.

In this embodiment, the relief notch 4 is aligned with the opening 132 when the arcuate convex and arcuate concave surfaces are in engagement.

In this embodiment, the accommodating groove 111 is an annular groove, and the inner side surface of the accommodating groove 111 includes a first side surface 1111a and a second side surface 1111b, where the clamping groove 112 is disposed on the first side surface 1111 a. The first side 1111a has a disc-shaped structure, and after the clamping groove 112 is formed, the first side 1111a cooperates with the mechanism of the swing buckle 21 and the torsion spring 22, which are the same as the ratchet mechanism in operation principle. Specifically, as shown in fig. 1 and 2, when the driving gear 11 rotates counterclockwise, it rotates forward, and at this time, the swing buckle 21 always slides against the first side 1111a, so that the driving gear 11 can rotate infinitely, and the opening tightening device is in a working state; when the driving gear 11 rotates clockwise, it is reversed, and the swing buckle 21 can slide along the first side 1111a and be clamped into the clamping groove 112, so as to limit the driving gear 11.

In other embodiments, the slot 112 may also be disposed on the second side 1111b, where the torsion spring 22 acts on the swing buckle 21 to slidably engage the second side 1111 b.

In this embodiment, in order to facilitate the control of the opening 132 and the yielding notch 4, the diameter of the pitch circle of the driving gear 11 is D1, and the diameter of the pitch circle of the opening gear 13 is D2; d1/d2=n, N being a positive integer. Further, the number of the clamping grooves 112 is N, and the N clamping grooves 112 are circumferentially and uniformly distributed on the inner side surface of the accommodating groove 111. In this embodiment, preferably, n=1. Namely, the pitch diameter of the driving gear 11 is equal to the pitch diameter of the opening gear 13; i.e. the transmission ratio between the driving gear 11 and the opening gear 13 is 1:1, the number of the clamping grooves 112 is one. I.e. when the driving gear 11 rotates once, the opening gear 13 also rotates once.

In other embodiments, n=3 is illustrated. The number of the clamping grooves 112 is three, and at this time, the transmission ratio between the driving gear 11 and the opening gear 13 is 1:3, that is, when the driving gear 11 rotates once, the opening gear 13 rotates three weeks, that is, when the opening gear 13 rotates once, the driving gear 11 rotates one third of the circle. In use, any one of the three slots 112 cooperates with the swing buckle 21 to align the opening 132 with the yielding notch 4 when the drive gear 11 is counter-rotated and stopped.

It should be noted that the transmission ratio should not be too small, i.e. the size of the reference circle of the driving gear 11 should not be too large, otherwise the size of the opening tightening device would be increased, and the use is inconvenient.

As shown in fig. 1 to 5, the free end of the rotating shaft 23 extends outside the housing; the rotating shaft 23 is provided with a swinging piece 18, and the swinging piece 18 is positioned outside the shell; the housing is provided with an inductive switch 16 which cooperates with the oscillating member 18.

In this embodiment, the inductive switch 16 is a slot switch, and the swinging member 18 is a swinging needle matched with the slot switch. When the swing buckle 21 is clamped into the clamping groove 112 and the opening 132 is aligned with the yielding notch 4, the swing member 18 is located in the inductive switch 16. In this embodiment, the swinging member 18 is fixedly connected to the rotating shaft 23, and the swinging buckle 21 is fixedly connected to the rotating shaft 23. When the swing buckle 21 slides on the first side 1111a and passes through the clamping groove 112, the swing buckle 21 swings, so that the swing piece 18 is driven to swing through the rotating shaft 23, when the swing buckle 21 is clamped into the clamping groove 112 and the arc-shaped concave surface is attached to the arc-shaped convex surface, the swing piece 18 blocks the opposite light of the induction switch 16, and at the moment, the opening 132 is aligned with the yielding gap 4; when the swing buckle 21 is separated from the clamping groove 112, i.e. the arc concave surface and the arc convex surface, the swing piece 18 is separated from the inductive switch 16, and the opening 132 and the yielding gap 4 are in a non-aligned state, so that whether the opening 132 and the yielding gap 4 are aligned, i.e. whether the opening gear 13 is completely reset, can be judged by an electric signal of the inductive switch 16. The opening tightening device provided in this embodiment further includes a control module in communication with the inductive switch 16. The control module here may be configured to a robotic arm or robot for automated use of the opening tightening device.

In this embodiment, as shown in fig. 1 and 2, a swing groove 141 is formed on the inner side surface of the housing, that is, the inner side surface of the housing main body 14, and the rotating shaft 23 is disposed at the bottom of the swing groove 141; the torsion spring 22 is sleeved on the rotating shaft 23; one end of the torsion spring 22 is abutted to the swing buckle 21, and the other end is abutted to the inner wall of the swing groove 141. The pendulum groove 141 is used here for mounting the torsion spring 22.

In this embodiment, the opening 132 is embedded with an open nut sleeve 131. The split nut housing 131 is here used to engage the lock nut 32. The split nut housing 131 herein is removable to facilitate replacement of other models so that the split tightening device can accommodate the installation of more models of lock nuts 32.

In this embodiment, the opening tightening device further includes a telescopic mechanism, and the housing is mounted to a telescopic end of the telescopic mechanism. The telescopic mechanism can be any telescopic rod in the prior art, and can also be a lifting mechanism, and the opening tightening device can be longitudinally lifted through the telescopic mechanism so as to avoid the ascending operation of staff.

It should be noted that in other embodiments, the reset assembly may include a location marker point and a sensor that monitors the location marker point. For example, a position mark point is set on the opening gear 13, a sensor corresponding to the position mark point is set on the shell, when the driving gear 11 rotates forward, the sensor is powered off and does not work, when the driving gear 11 rotates backward, the sensor is powered on, when the position mark point on the opening gear 13 passes through the sensor, the sensor monitors a signal and sends the signal to the central processor, and the central processor controls the driving piece 17 to stop rotating.

The technical means disclosed by the scheme of the invention is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.

Claims (12)

1. The utility model provides a device is screwed up to opening, its characterized in that includes the casing and installs the drive assembly on the casing, drive assembly includes driving gear, opening gear, drive assembly and is used for driving gear pivoted driving piece, wherein:

the driving gear and the opening gear are both rotatably arranged in the shell; the transmission assembly is arranged between the driving gear and the opening gear and is used for connecting the driving gear and the opening gear in a transmission manner;

a yielding notch corresponding to the opening on the opening gear is arranged on the shell;

the shell is provided with a reset component, and the driving gear is defined to rotate positively when the tightening device is in a working state;

when the driving gear is reversed and the opening is aligned with the yielding gap, the reset assembly acts on the transmission assembly to stop the driving gear.

2. The opening tightening device of claim 1, wherein the reset assembly comprises a swing catch rotatably mounted to the housing, an end face of the drive gear being configured with a catch groove that mates with the swing catch;

the swing buckle is characterized by further comprising a torsion spring arranged between the swing buckle and the shell, when the driving gear is reversed and the opening is aligned with the yielding notch, the torsion spring acts on the swing buckle to enable the swing buckle to be clamped to the clamping groove so that the driving gear stops rotating.

3. The opening tightening device according to claim 2, wherein an accommodating groove is formed in an end face of the driving gear, and the swing buckle is slidably attached to an inner side face of the accommodating groove;

the clamping groove is arranged on the inner side surface of the accommodating groove.

4. A split tightening apparatus as claimed in claim 3, wherein the drive gear has a pitch diameter D1 and the split gear has a pitch diameter D2;

d1/d2=n, N being a positive integer.

5. The opening tightening device according to claim 4, wherein the number of the clamping grooves is N, and the N clamping grooves are circumferentially and uniformly distributed on the inner side surface of the accommodating groove.

6. The opening tightening device of any one of claims 2-5, further comprising a swing member and an inductive switch coupled to the swing member, wherein:

the swinging piece and the swinging buckle synchronously swing;

when the swing buckle is clamped into the clamping groove and the opening is aligned with the yielding notch, the swing piece moves to the sensing position of the sensing switch.

7. The opening tightening device according to claim 6, wherein the swing buckle is rotatably mounted to the housing through a rotation shaft, a swing groove is provided on an inner side surface of the housing, and the rotation shaft is provided at a bottom of the swing groove;

the torsion spring is sleeved on the rotating shaft;

one end of the torsion spring is abutted to the swing buckle, and the other end of the torsion spring is abutted to the inner wall of the swing groove.

8. The split tightening device as claimed in any one of claims 1 to 5 or 7, wherein the split is embedded with a split nut sleeve.

9. The split tightening device according to any one of claims 1 to 5 or 7, wherein the pitch diameter of the drive gear and the pitch diameter of the split gear are equal.

10. The opening tightening device of any one of claims 1-5 or 7, further comprising a telescoping mechanism, the housing being mounted to a telescoping end of the telescoping mechanism.

11. The opening tightening device of claim 6, wherein the opening tightening device comprises a control module, the inductive switch being communicatively coupled to the control module.

12. The opening tightening device of claim 1, wherein the drive assembly comprises two drive gears;

the two transmission gears are rotatably arranged in the shell; the two transmission gears are arranged between the driving gear and the opening gear and are respectively meshed with the driving gear and the opening gear.