CN211805822U

CN211805822U - Electric spanner

Info

Publication number: CN211805822U
Application number: CN202020445211.7U
Authority: CN
Inventors: 胡坤平; 税梦瑶
Original assignee: Panzhihua University
Current assignee: Panzhihua University
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2020-10-30
Anticipated expiration: 2030-03-31

Abstract

The utility model relates to an electric wrench belongs to spanner instrument technical field. The utility model is provided with a self-adaptive sliding rail with arc-shaped rail lines, and a clamp block slides on the sliding rail to realize contraction and expansion; when the clamp is implemented, the rotating direction of the screwing device is matched with the contraction direction of the clamp block, and the clamp block is automatically locked by utilizing the centrifugal force generated by the rotation of the screwing device. Because the utility model provides a radial realization that anchor clamps piece can twist the device soon contracts, expands, therefore can be applicable to the nut or the bolt of multiple specification, and it is very convenient to use. Furthermore, the utility model discloses be provided with universal transmission at the middle part of worm, borrow this and to realize revolving the relative position who revolves wrong device and handle shell and adjust, when implementing, can adjust according to the operating mode requirement. The utility model discloses utilize the flexible axle transmission to make the main part separation of driving motor, power and spanner, during the implementation, can reduce operating personnel's hand burden.

Description

Electric spanner

Technical Field

The utility model relates to an electric wrench belongs to spanner instrument technical field.

Background

The electric wrench is an electric tool for screwing and unscrewing bolts and nuts, and is mostly used for initial screwing, final screwing and initial screwing of torsional shear type high-strength bolts in the construction of mounting large-hexagon-head high-strength bolts for steel structure bridges, building construction, chemical engineering and power generation equipment, and occasions with strict requirements on torque or axial force of bolt fasteners.

The joint of traditional construction worker electric spanner can only one to one, adopts the mode of changing the joint to adapt to usually in the face of not unidimensional nut and bolt, and the joint of a specification can only be applicable to a nut or bolt, and is facing longer bolt and narrow and small bolt in space simultaneously, can't use, and is very inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: provided is an electric wrench which can be applied to nuts or bolts of various specifications.

For solving the technical problem the utility model discloses the technical scheme who adopts is: the electric wrench comprises a shell, wherein a rotatably arranged screwing device is arranged on the shell, the screwing device is provided with a driving device for driving the screwing device to rotate, and the screwing device comprises a fixing ring, a self-adaptive sliding rail and a clamp block; the outer ring of the fixing ring is in running fit with the shell, the self-adaptive sliding rail is fixedly arranged on the inner ring of the fixing ring, and the clamp block is slidably arranged on the self-adaptive sliding rail; the clamp blocks are arranged into a plurality of pieces and combined to form a screwing station; the self-adaptive sliding rails are also provided with a plurality of pieces, and the self-adaptive sliding rails correspond to the clamp blocks one by one; the track line of the self-adaptive sliding track is distributed in an arc shape, and the distance between the arc distribution line and the excircle center of the fixing ring is gradually increased or gradually decreased in the direction from the first end to the second end of the arc distribution line.

Further, the method comprises the following steps: the head of the clamp block is provided with a connecting column, an anti-slip head is sleeved on the connecting column, and the anti-slip head is fixed on the connecting column at the head of the clamp block through a fastening screw.

Further, the method comprises the following steps: the self-adaptive sliding rails are three pieces which are arranged at equal intervals.

Further, the method comprises the following steps: the casing includes the handle shell, and the both sides of handle shell are provided with handle antiskid silica gel.

Further, the method comprises the following steps: the driving device of the screwing device comprises a worm gear transmission mechanism and a driving motor; the worm gear and worm transmission mechanism comprises a worm and a worm wheel, the worm wheel is fixedly arranged on the outer ring of the fixing ring, and the worm wheel and the fixing ring are arranged coaxially; the worm is rotatably arranged on the shell, a transmission end of the worm and the worm wheel form a gear transmission mechanism, and an input end of the worm is connected with an output end of the driving motor.

Further, the method comprises the following steps: the middle part of the worm is provided with a universal transmission device which is provided with a reversing control rod, a reversing valve control wheel and a reversing valve. Correspondingly, the machine shell comprises a screwing part shell and a handle shell, wherein a rotating connecting structure is formed between the screwing part shell and the handle shell through a rotating shaft and a rotating shaft mounting shell, and the rotating connecting structure is arranged at a corresponding position of the universal transmission device.

Further, the method comprises the following steps: the input end of the worm is provided with a flexible shaft connector which is connected with a flexible shaft motor connector through a flexible shaft; the flexible shaft motor connector is used for connecting a driving motor, the driving motor is provided with a wireless control circuit, and the wireless control circuit comprises a control switch arranged on the casing.

The utility model has the advantages that: the track line of the self-adaptive sliding rail is distributed in an arc shape, and the clamp block slides on the sliding rail to realize contraction and expansion; when the clamp is implemented, the rotating direction of the screwing device is matched with the contraction direction of the clamp block, and the clamp block is automatically locked by utilizing the centrifugal force generated by the rotation of the screwing device. Because the utility model provides a radial realization that anchor clamps piece can twist the device soon contracts, expands, therefore can be applicable to the nut or the bolt of multiple specification, and it is very convenient to use. Furthermore, the utility model discloses be provided with universal transmission at the middle part of worm, borrow this and to realize revolving the relative position who revolves wrong device and handle shell and adjust, when implementing, can adjust according to the operating mode requirement. The utility model discloses utilize the flexible axle transmission to make the main part separation of driving motor, power and spanner, during the implementation, can reduce operating personnel's hand burden.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a front view of the present invention.

Fig. 3 is a partial schematic view of the transmission structure of the present invention.

The labels in the figure are: 1-machine shell, 2-rotating shaft mounting shell, 3-rotary operating button, 4-handle antiskid silica gel, 5-handle shell, 6-worm positioning mechanism five, 7-tail end shell, 8-connecting protective rubber, 9-flexible shaft connector, 10-flexible shaft, 11-flexible shaft motor connector, 12-control switch, 13-rotating shaft, 14-screwing part shell, 16-fixing ring, 17-sliding rail base, 18-self-adaptive sliding rail, 19-clamp block, 20-fastening screw, 21-antiskid head, 22-worm wheel, 23-worm wheel transmission gear, 24-worm positioning mechanism one, 25-worm transmission gear, 26-universal transmission device, 27-worm positioning mechanism two, 28-reversing control rod, 29-a reversing valve control wheel, 30-a reversing valve, 31-a worm, 32-a worm positioning mechanism III, 33-a worm positioning mechanism IV and 34-a transmission device power protection device.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

As shown in fig. 1 to 3, the present invention includes a casing 1, a screwing device rotatably disposed on the casing 1, the screwing device being provided with a driving device for driving the screwing device to rotate, the screwing device including a fixing ring 16, a self-adaptive sliding rail 18 and a clamp block 19; the outer ring of the fixed ring 16 forms a running fit with the casing 1, the adaptive slide rail 18 is fixedly arranged on the inner ring of the fixed ring 16 (generally, a fixed integral structure is arranged through the slide rail base 17), and the clamp block 19 is slidably arranged on the adaptive slide rail 18; the clamp blocks 19 are arranged in multiple pieces and combined to form a screwing station; the self-adaptive sliding rails 18 are also arranged in a plurality of pieces, and the self-adaptive sliding rails 18 correspond to the clamp blocks 19 one by one; the track line of the adaptive slide rail 18 is distributed in an arc shape, and the distance between the arc distribution line and the outer circle center of the fixed ring 16 is gradually increased or decreased from the first end to the second end of the arc distribution line, thereby realizing the contraction and expansion of the clamp block 19 in the radial direction of the screwing device. In practice, the rotation direction of the screwing device is matched with the contraction direction of the clamp block 19, and the clamp block 19 is automatically locked by the centrifugal force generated by the rotation of the screwing device.

In order to make the structure more reliable, the head of the clamp block 19 is provided with a connecting column, an anti-slip head 21 is sleeved on the connecting column, and the anti-slip head 21 is fixed on the connecting column at the head of the clamp block 19 through a fastening screw 20. The adaptive slide rail 18 is three pieces arranged at regular intervals, and accordingly, the clamp block 19 is also provided in 3 pieces.

For convenient operation: the machine shell 1 comprises a handle shell 5, and handle anti-slip silica gel 4 is arranged on two sides of the handle shell 5.

For further convenience of operation: the driving device of the screwing device comprises a worm gear transmission mechanism and a driving motor; the worm and gear transmission mechanism comprises a worm 31 and a worm wheel 22, the worm wheel 22 is fixedly arranged on the outer ring of the fixing ring 16, and the worm wheel 22 and the fixing ring 16 are coaxially arranged; the worm 31 is rotatably arranged on the machine shell 1, a transmission end of the worm 31 and the worm wheel 22 form a gear transmission mechanism, and an input end of the worm 31 is connected with an output end of the driving motor; the middle of the worm 31 is provided with a universal transmission 26, and the universal transmission 26 is provided with a reversing control rod 28, a reversing valve control wheel 29 and a reversing valve 30. Accordingly, the housing 1 includes a screw part housing 14 and a handle housing 5, and a rotary connection structure (one of the rotary shaft 13 and the rotary shaft mounting housing 2 is fixedly connected to the screw part housing 14, and the other is fixedly connected to the handle housing 5) is formed between the screw part housing 14 and the handle housing 5 through the rotary shaft 13 and the rotary shaft mounting housing 2, and is disposed at a corresponding position of the universal transmission device 26. The utility model discloses be provided with universal drive device 26 at the middle part of worm 31, borrow this to realize revolving the relative position who revolves device and handle shell 5 and adjust, when implementing, can adjust according to the operating mode requirement, can realize two-way 60 degrees rotations in this embodiment (promptly at the visual angle that 2 is shown, revolve the device and can upwards 60 degrees rotations, also can 60 degrees rotations downwards). For convenient operation, the reversing valve 30 can be operated by rotating the operation button 3 designed at a proper position; when the angle adjusting device is used, the reversing valve control wheel 29 is unlocked by pressing the reversing valve 30, the screwing device is pulled in a manual mode to realize angle adjustment, and the reversing valve 30 is pressed again after the adjustment is finished, so that the reversing valve control wheel 29 is locked, and the adjustment is finished.

On the basis, the utility model is provided with a flexible shaft connector 9 at the input end of the worm 31, and the flexible shaft connector 9 is connected with a flexible shaft motor connector 11 through a flexible shaft 10; the flexible shaft motor connector 11 is used for connecting a driving motor, the driving motor is provided with a wireless control circuit, and the wireless control circuit comprises a control switch 12 arranged on the machine shell 1. The utility model discloses utilize the flexible axle transmission to make the main part separation of driving motor, power and spanner, during the implementation, can reduce operating personnel's hand burden. In implementation, the control switch 12 controls the driving motor to be turned on and off in a wireless remote control mode through a wireless control module built in the wrench. The wireless control module power supply may be powered by a miniature battery.

It should be noted that both the "rotation adjusting structure between the screwing device and the handle housing 5" and the "flexible shaft transmission" described above may be implemented in combination.

The universal transmission device 26 and the flexible shaft transmission are both the existing mature technologies, which can be seen in Baidu encyclopedia.

Claims

1. Electric spanner, including casing (1), be provided with on casing (1) and rotate the device of twisting soon that sets up, twist soon and set up its pivoted drive arrangement of drive, its characterized in that: the screwing device comprises a fixing ring (16), a self-adaptive sliding rail (18) and a clamp block (19); the outer ring of the fixed ring (16) is in running fit with the shell (1), the self-adaptive sliding rail (18) is fixedly arranged on the inner ring of the fixed ring (16), and the clamp block (19) is slidably mounted on the self-adaptive sliding rail (18); the clamp blocks (19) are arranged in multiple pieces and combined to form a screwing station; the self-adaptive sliding rails (18) are also arranged into a plurality of pieces, and the self-adaptive sliding rails (18) correspond to the clamp blocks (19) one by one; the track line of the self-adaptive sliding track (18) is distributed in an arc shape, and the distance between the arc distribution line and the excircle center of the fixed ring (16) is gradually increased or decreased in the direction from the first end to the second end of the arc distribution line.

2. The power wrench of claim 1, wherein: the head of the clamp block (19) is provided with a connecting column, an anti-slip head (21) is sleeved on the connecting column, and the anti-slip head (21) is fixed on the connecting column at the head of the clamp block (19) through a fastening screw (20).

3. The power wrench of claim 1, wherein: the adaptive sliding rails (18) are three pieces which are arranged at equal intervals.

4. The power wrench of claim 1, wherein: the machine shell (1) comprises a handle shell (5), and handle anti-slip silica gel (4) is arranged on two sides of the handle shell (5).

5. The electric wrench as claimed in any one of claims 1 to 4, wherein: the driving device of the screwing device comprises a worm gear transmission mechanism and a driving motor; the worm and gear transmission mechanism comprises a worm (31) and a worm wheel (22), the worm wheel (22) is fixedly arranged on the outer ring of the fixing ring (16), and the worm wheel (22) and the fixing ring (16) are coaxially arranged; the worm (31) is arranged on the shell (1) in a rotating mode, a transmission end of the worm (31) and the worm wheel (22) form a gear transmission mechanism, and an input end of the worm (31) is connected with an output end of the driving motor.

6. The power wrench of claim 5, wherein: a universal transmission device (26) is arranged in the middle of the worm (31), and the universal transmission device (26) is provided with a reversing control rod (28), a reversing valve control wheel (29) and a reversing valve (30); the machine shell (1) comprises a screwing part shell (14) and a handle shell (5), a rotating connection structure is formed between the screwing part shell (14) and the handle shell (5) through a rotating shaft (13) and a rotating shaft installation shell (2), and the rotating connection structure is arranged at the corresponding position of the universal transmission device (26).

7. The power wrench of claim 5, wherein: the input end of the worm (31) is provided with a flexible shaft connector (9), and the flexible shaft connector (9) is connected with a flexible shaft motor connector (11) through a flexible shaft (10); the flexible shaft motor connector (11) is used for connecting a driving motor, the driving motor is provided with a wireless control circuit, and the wireless control circuit comprises a control switch (12) arranged on the casing (1).