CN112372563B - Full-automatic electric control spanner for narrow space - Google Patents

Abstract

The invention relates to the field of electric tools, and specifically discloses a fully automatic electric control wrench for a narrow space, comprising a wrench base and a wrench upper cover, the wrench upper cover being fixed on the wrench base to form a shell structure with a cavity inside, A driving mechanism is arranged inside the casing, a sleeve is arranged at the front end of the casing, and the driving mechanism drives the sleeve to rotate; a rotating handle is arranged at the front end of the casing, and a rear end of the casing is arranged Set with tail grip. The advantage of the invention is that the angle of the sleeve behind the handle can be changed by rotating the rotary handle and the rear handle, so that the bolts of different angles can be adapted, and the operation is more convenient.

Description

A fully automatic electric control wrench for narrow space

technical field

The invention relates to the field of electric tools, in particular to a fully automatic electric control wrench for narrow spaces.

Background technique

Hexagon bolts are widely used in applications such as narrow connection space, compact structure of parts to be connected, and high requirements for bolt tensile and shear resistance due to their smaller nut than ordinary bolts, less restrictions on installation position and high strength grade. occasion. The tightening and loosening of the hexagonal bolts requires the use of a hexagonal wrench with the corresponding size of the hexagon. In the use of the existing hexagonal wrench, due to the limitation of the installation position, the hexagonal wrench cannot rotate the hexagonal bolt in a full circle, so that the hexagonal bolt can be tightened or loosened. The speed is slow; and the position angle of the bolt is large, and it is difficult to connect the socket of the wrench to the bolt after holding the electric wrench.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the shortcomings of the prior art and provide a fully automatic electric control wrench for narrow spaces.

The object of the present invention is achieved through the following technical solutions: a fully automatic electronically controlled wrench for narrow spaces, comprising a wrench base and a wrench upper cover, the wrench upper cover is fixed on the wrench base to form a shell structure with a cavity inside , a drive mechanism is arranged inside the casing, a sleeve is arranged at the front end of the casing, and the drive mechanism drives the sleeve to rotate;

The front end of the housing is provided with a rotating handle, the rotating handle includes a handle and a rotating outer ring, the handle is fixed on the rotating outer ring, the rotating outer ring is provided with a rotating inner ring, and the rotating outer ring is A gap is set between the ring and the rotating inner ring, a plurality of mounting holes are arranged in a circumferential array on the rotating inner ring, and a rotating handle push rod is arranged in the mounting hole, and one end of the rotating handle push rod is connected with a a spring, the other end of the spring is fixed on the inner wall of the rotating outer ring, the rotating inner ring is sleeved on the casing, and the circumferential array on the casing is provided with locking holes corresponding to the mounting holes;

The rear end of the casing is provided with a tail grip, the tail grip is connected to a rotating block, an electromagnet is arranged inside the rotating block, a fixed magnet is arranged on the casing, and a wrench base is arranged on the wrench base. A rotating hole, a rotating shaft is set on the rotating block, a bearing is sleeved on the rotating shaft, the bearing is matched with the rotating hole, one end of the rotating shaft is provided with a rotating block, and an end surface of the rotating block is provided with The plurality of conductive heads further include a butt plate, the butt plate is fixed on the wrench base, a plurality of coaxially arranged conductive rings are arranged on the butt plate, and the conductive heads are in contact with the corresponding conductive rings.

Specifically, the front end of the casing is set in a stepped shape, and the front end of the casing is provided with a rotating handle block, which is sleeved on the casing and fixed, and is used to rotate the outer ring And the rotating inner ring is limited between the rotating grip stop and the step of the housing.

Specifically, the rotating block is provided with a display screen.

Specifically, the drive mechanism includes a drive motor, a clutch mechanism and a deceleration mechanism, the power output end of the drive motor is connected to the deceleration mechanism through the clutch mechanism, and the clutch mechanism controls the power connection and interruption between the drive motor and the deceleration mechanism, and the deceleration mechanism The mechanism includes a plurality of deceleration assemblies, the deceleration assemblies include a connecting shaft, an input gear and an output gear, the input gear and the output gear are fixed on the connecting shaft, the connecting shaft is rotatably connected with the housing, and the adjacent deceleration assemblies are The input gear meshes with the output gear, the output gear of the final stage reduction assembly is connected with a toothed belt, the toothed belt is connected with the sleeve, and the diameter of the input gear is larger than that of the output gear.

Specifically, the clutch mechanism includes two support seats, a mounting seat is arranged between the support seats, and a main shaft is rotatably connected between the two support seats and the mounting seat, and one end of one main shaft is connected by a coupling One end of the other main shaft is provided with a bevel gear, the bevel gear meshes with the input gear of the reduction mechanism, a first friction wheel is arranged on both of the main shafts, and a mounting groove is arranged on the upper part of the support seat, A friction wheel shaft support block is slidably arranged in the installation groove, a support spring is arranged at the bottom of the friction wheel shaft support block, one end of the support spring is fixed at the bottom of the installation groove, and the top of the friction wheel shaft support block is provided with an electric circuit. A pressure control block, the top of the electric control pressure block is fixedly connected to the support seat, a friction wheel shaft is rotatably arranged between the two friction wheel shaft support blocks, and two second friction wheels are arranged on the friction wheel shaft, and the two friction wheel shafts are provided with two friction wheels. The second friction wheels correspond to the two first friction wheels respectively.

Specifically, a torque sensor is provided on the coupling.

Specifically, the tail grip is provided with a control button.

Specifically, the clutch mechanism includes a support seat, a main shaft is rotatably disposed on the support seat, one end of the main shaft is provided with a bevel gear, the bevel gear meshes with the input gear of the reduction mechanism, and the other end of the main shaft is provided with There is a guide block, the guide block is provided with a mounting column, the mounting column is sleeved with a first surface gear, the output end of the drive motor is provided with a second surface gear, the first surface gear and the second surface gear The face gears are meshed, a first electromagnet is arranged on the end face of the guide block, and a second electromagnet is arranged on the opposite surface of the first face gear and the guide block. The adsorption makes the first surface gear move toward the guide block along the mounting column, so that the first surface gear and the second surface gear are meshed and disconnected.

Specifically, a pressing spring is arranged between the guide block and the first surface gear.

Specifically, a sliding block is provided on the mounting column in the axial direction, a guide hole is provided in the middle of the first surface gear, and a chute is provided on the inner wall of the guide hole in the axial direction. Slider slip fit

The present invention has the following advantages:

1. The rotary grip provided at the front end of the housing and the rear grip provided at the rear end of the housing of the present invention can be rotated, and the angle of the sleeve behind the grip can be changed by rotating the rotary grip and the rear grip. It can adapt to bolts of different angles, and the operation is more convenient.

2. The electronically controlled pressure block provided by the present invention can cooperate with the torque sensor during use, and automatically control the start and stop of the electronically controlled pressure block through the signal of the torque sensor, so that when the detected torque reaches a predetermined value, the electronically controlled pressure block can be automatically controlled. The pressure block moves up, the friction wheel shaft support block moves up under the action of the support spring, the second friction wheel is separated from the first friction wheel, the power is disconnected, and the tightening of the bolts is automatically stopped.

Description of drawings

Fig. 1 is a schematic diagram of the overall internal structure of the wrench housing of the present invention;

2 is a schematic diagram of the external structure of the wrench of the present invention;

FIG. 3 is a schematic structural diagram of the deceleration assembly of the present invention;

FIG. 4 is a schematic diagram of the structure of the rotating baffle and the docking plate of the present invention;

FIG. 5 is a schematic structural diagram of the rotating blocking plate of the present invention;

FIG. 6 is a schematic structural diagram of the docking plate of the present invention;

FIG. 7 is a schematic structural diagram of the rotary grip of the present invention;

FIG. 8 is a schematic diagram of the structure of the support seat of the present invention;

FIG. 9 is a schematic diagram of the overall structure of Embodiment 2 of the present invention;

10 is a schematic structural diagram of the clutch mechanism according to the second embodiment of the present invention;

In the picture: 1- wrench base, 2- first friction wheel, 3- mounting seat, 4- main shaft, 5- reduction assembly, 51- connecting shaft, 52- input gear, 53- output gear, 6- handle, 7- Sleeve, 8-toothed belt, 9-rotating outer ring, 10-rotating inner ring, 11-rotating handle push rod, 12-electric pressure block, 13-second friction wheel, 14-friction wheel shaft, 15- Support seat, 16- friction axle support block, 17- coupling, 18- drive motor, 19- rotating block, 20- tail grip, 21- display screen, 22- spanner cover, 23- fixed magnet, 24- Rotating block, 241-conductive head, 25-bearing, 26-butt plate, 27-conductive ring, 28-spring, 29-support spring, 30-bevel gear, 31-guide block, 32-first surface gear, 33 -Second surface gear, 34-Resistant spring, 35-First electromagnet, 36-Installation post.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention, that is, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The components of the embodiments of the invention generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

Thus, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present invention.

It should be noted that relational terms such as the terms "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Furthermore, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the said element.

The present invention will be further described below with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the following.

Embodiment 1.

As shown in Figures 1 to 8, a fully automatic electric control wrench for a narrow space includes a wrench base 1 and a wrench upper cover 22. The wrench upper cover 22 is fixed on the wrench base 1 to form a shell with a cavity inside. structure, a driving mechanism is arranged inside the casing, a sleeve 7 is arranged at the front end of the casing, and the driving mechanism drives the sleeve 7 to rotate;

The front end of the housing is provided with a rotating handle, the rotating handle includes a handle 6 and a rotating outer ring 9, the handle 6 is fixed on the rotating outer ring 9, and a rotating inner ring is arranged inside the rotating outer ring 9 10. A gap is set between the rotating outer ring 9 and the rotating inner ring 10, a plurality of mounting holes are arranged in a circumferential array on the rotating inner ring 10, and a rotating handle push rod 11 is arranged in the mounting holes, so One end of the rotating handle push rod 11 is connected with a spring 28, the other end of the spring 28 is fixed on the inner wall of the rotating outer ring 9, the rotating inner ring 10 is sleeved on the casing, and the casing The circumferential array on the body is provided with locking holes corresponding to the mounting holes;

The rear end of the casing is provided with a tail grip 20, the tail grip 20 is connected to the rotating block 19, the interior of the rotating block 19 is provided with an electromagnet, the casing is provided with a fixed magnet 23, the The wrench base 1 is provided with a rotating hole, the rotating block 19 is provided with a rotating shaft, a bearing 25 is sleeved on the rotating shaft, the bearing 25 is matched with the rotating hole, and one end of the rotating shaft is provided with a rotating block 24, A plurality of conductive heads 241 are arranged on the end surface of the rotating baffle 24, and also includes a butt plate 26, the butt plate 26 is fixed on the wrench base 1, and a plurality of coaxial arrangements are arranged on the butt plate 26 The conductive ring 27 is connected, and the conductive head 241 is in contact with the corresponding conductive ring 27 . In this solution, both the rotary grip and the tail grip 20 can be rotated. The position of the sleeve of the existing electric wrench is relatively fixed with the position of the handle. Therefore, when the hand holds the handle of the wrench, the position of the sleeve is fixed. , and the posture of the human hand is basically unchanged after holding the handle, only a small adjustment angle, so that after holding the wrench, only the bolt in the right position can be well tightened, and at some special angles, such as The axis of the bolt is at an angle of 60° from the horizontal, which requires the human hand to rotate the corresponding angle to adapt, and such an operation is difficult for the human hand to operate. Therefore, in order to adapt to the tightness of the bolt at a special angle, this scheme will The rotating handle and the rear handle 20 of the wrench are set to be rotatable. When in use, hold the handle 6 and then rotate the handle 6 along the circumferential direction of the housing. When the handle 6 is rotated, the rotating outer ring 9 rotates, and the rotating outer ring 9 Pull the spring 28, and the spring 28 pulls the rotary handle push rod 11 to move axially along the mounting hole. At the beginning, the rotary handle push rod 11 is stuck in the locking hole on the housing, so that the function of the rotary handle push rod 11 is The position of the rotating outer ring 9 is limited. After the rotating handle push rod 11 moves, the rotating handle push rod 11 is disengaged from the locking hole. In this way, without the restriction of the rotating handle push rod 11, the rotating outer ring 9 can Rotate relative to the housing so that the handle 6 is rotated to a suitable position, and then the handle 6 is released, so that the rotary handle push rod 11 continues to be locked into the locking hole under the action of the spring 28, so that the position of the handle 6 is fixed, and then the rear handle is rotated. The handle 20 and the rear grip 20 are provided with buttons to control the on-off and power-off of the electromagnet. When it is necessary to rotate, press the button, and then the electromagnet is powered off, so that the suction force between the electromagnet and the fixed magnet 23 disappears, so that The rotating block 19 can be rotated, and the position of the tail handle 20 and the rotating handle 6 can be easily held by the operator by rotating the tail grip 20. The axis angle of the gripped sleeve corresponds to the angle of the bolt that needs to be tightened, so that In order to facilitate the operator to tighten the bolts, the above solution is particularly suitable for bolts in a narrow space, and the axis of the sleeve is perpendicular to the axis of the casing. In this solution, the electric control center for controlling the wrench is set in the rotating block 19, and the electric control center needs to be electrically connected with electric control elements such as the torque sensor, the electric control pressure block 12, the driving motor 18, etc., so that when the rotating block 19 rotates , it cannot be directly connected to the electronic control element through a wire, which will lead to the winding and damage of the wire. One end of the rotating block 19 is connected with a rotating shaft, and the rotating shaft is rotatably connected to the housing through a bearing. , the rotating baffle 24 is arranged in the casing so that the axial position of the rotating shaft is restricted by the rotating baffle 24, that is, the axial position of the rotating block 19 is restricted. The rotating shaft in this scheme is a hollow shaft, and the wire of the electric control center penetrates into the rotating shaft Then, it is connected to the conductive head 241 provided on the rotating baffle 24, so that when the conductive head 241 contacts the conductive ring 27 on the docking plate 26, the transmission of electrical signals and power can be realized. The conductive ring 27 on the docking plate 26 is embedded in the On the butt plate 26, the butt plate 26 is made of insulating material, and is recently connected with the electric control element through the conductive ring 27, so that the winding of the wires can be avoided.

Further, the front end of the casing is set in a stepped shape, and the front end of the casing is provided with a rotating handle block 22, and the rotating handle block 22 is sleeved on the casing and fixed for rotating the rotating handle. The outer ring 9 and the rotating inner ring 10 are confined between the rotating grip stop 22 and the steps of the housing.

Further, the rotating block 19 is provided with a display screen 21, and the display screen 21 displays the magnitude of the torque detected by the internal torque sensor in real time, which is convenient for the user to control in real time.

Further, the drive mechanism includes a drive motor 18, a clutch mechanism and a deceleration mechanism, the power output end of the drive motor 18 is connected to the deceleration mechanism through the clutch mechanism, and the clutch mechanism controls the power connection and interruption of the drive motor 18 and the deceleration mechanism, The deceleration mechanism includes a plurality of deceleration assemblies 5. The deceleration assemblies include a connecting shaft 51, an input gear 52 and an output gear 53. The input gear 52 and the output gear 53 are fixed on the connecting shaft 51. The connecting shaft 51 is rotatably connected to the housing through a ball bearing, the input gear 52 of the adjacent reduction assembly 5 meshes with the output gear 53, and the output gear 53 of the final reduction assembly 5 is connected to the toothed belt 8, and the toothed belt 8 is connected to the For the sleeve 7 , the diameter of the input gear 52 is larger than that of the output gear 53 . In this scheme, the drive motor 18 is connected to the deceleration mechanism through the clutch mechanism, and the power output and disconnection of the drive motor 18 are controlled by the clutch mechanism. When the bolt is tightened to a predetermined torque, the clutch mechanism automatically disconnects the drive motor 18 from the deceleration mechanism. The deceleration mechanism includes at least three stages of deceleration, each stage of deceleration is composed of a deceleration assembly 5, and the three deceleration assemblies are sequentially connected to the input gear 52 through the output gear 53, so that the power output by the driving motor 18 passes through the deceleration mechanism. The torque is increased to meet the requirements of tightening the bolts, and finally the power is transmitted to the sleeve 7 through the toothed belt 8. The reason for using the toothed belt 8 is that the transmission ratio of the toothed belt 8 is relatively accurate. There are few cases where the torque of the head sleeve 7 changes, and at the same time, in order to meet the requirements of the smaller size of the head.

Further, the clutch mechanism includes two support bases 15, between which a mounting base 3 is arranged, and a main shaft 4 is rotatably connected between the two support bases 15 and the installation base 3, and one of the main shafts 4 One end is connected to the drive motor 18 through the coupling 17, and one end of the other main shaft 4 is provided with a bevel gear 30, the bevel gear 30 meshes with the input gear 52 of the deceleration mechanism, and the two main shafts 4 are provided with a first A friction wheel 2, the upper part of the support base 15 is provided with an installation groove, a friction wheel axle support block 16 is slidably arranged in the installation groove, and a support spring is provided at the bottom of the friction wheel axle support block 16, and one end of the support spring Fixed at the bottom of the installation groove, the top of the friction wheel shaft support block 16 is provided with an electronically controlled pressure block 12, the top of the electronic control pressure block 12 is fixedly connected with the support seat 15, and the two friction wheel shaft support blocks 16 rotate between A friction wheel shaft 14 is provided, and two second friction wheels 13 are arranged on the friction wheel shaft 14 , and the two second friction wheels 13 correspond to the two first friction wheels 2 respectively. When the bolt needs to be tightened, the electric control pressure block 12 is controlled to work, so that the electric control pressure block 12 drives the friction wheel shaft support block 16 to move down along the installation groove and the support spring is compressed. The electric control pressure block 12 can be made of a screw nut In this way, the motor drives the screw to drive the nut to move along the screw, the nut is fixed on the friction wheel shaft support block 16, and the friction wheel shaft support block 16 moves down to drive the friction wheel shaft 14 to move down, so that the two second friction wheels 13 are respectively connected to the two friction wheels 13. The two first friction wheels 2 are in close contact, so that the two main shafts 4 can be powered by the two second friction wheels 13 in close contact with the two first friction wheels 2, so that the power output from the driving motor 187 passes through a The main shaft is transmitted to the friction wheel shaft 14, and then transmitted to the other main shaft 4 through the friction wheel shaft 14, and finally the power is transmitted to the reduction mechanism through the bevel gear 30, wherein the input gear 52 connected with the bevel gear 30 is also a bevel gear. The shaft 17 is provided with a torque sensor, and the torque is detected by the torque sensor. When the detected torque reaches a predetermined torque, the power is cut off, and the electric control pressure block 12 is controlled to work, so that the electric control pressure block 12 is moved upwards, In this way, under the action of the restoring force of the support spring, the friction wheel shaft support block 16 is moved upward, and the second friction wheel 13 is separated from the first friction wheel 2, so that the power is disconnected, and the automatic disconnection of the power after the bolt is tightened is realized, and the operation is simple. The circumference of the first friction wheel 2 is provided with an annular protrusion, and the circumference of the second friction wheel 13 is provided with an annular groove. When the second friction wheel 13 is in contact with the first friction wheel 2, the first friction wheel The annular protrusion of 2 is inserted into the annular groove of the second friction wheel 13 .

Further, the tail grip 20 is provided with control buttons.

Embodiment two,

As shown in FIGS. 9 and 10 , the difference between this embodiment and the first embodiment is that the structure of the clutch mechanism is different. The clutch mechanism in this embodiment includes a support seat 15 , and a main shaft 4 is rotatably disposed on the support seat 15 . One end of the main shaft 4 is provided with a bevel gear 30, which meshes with the input gear 52 of the reduction mechanism, and the other end of the main shaft 4 is provided with a guide block 31, which is connected to the main shaft through the coupling 17. 4 connection, the guide block 31 is provided with a mounting post 36, the mounting post 36 is sleeved with a first surface gear 32, the output end of the drive motor 18 is provided with a second surface gear 33, the first surface gear 33 The face gear 32 meshes with the second face gear 33, the end face of the guide block 31 is provided with a first electromagnet 35, the face of the first face gear 32 opposite to the guide block 31 is provided with a second electromagnet, the When an electromagnet 35 and a second electromagnet are energized, they attract each other, so that the first surface gear 32 moves toward the guide block 31 along the mounting column 36, so that the first surface gear 32 and the second surface gear 33 are meshed and disconnected. In this solution, the clutch mechanism adopts gear meshing transmission to realize power transmission. When the power needs to be disconnected, both the first electromagnet 35 and the second electromagnet are energized, so that since the first electromagnet 35 is fixed on the guide block 31, The second electromagnet is fixed on the first surface gear 32, and the first electromagnet 35 and the second electromagnet are adsorbed to make the first surface gear 32 move along the guide block 31, so that the first surface gear 32 and the second surface gear 33 are engaged. When disconnected, the driving motor 18 drives the second surface gear 33 to idle to realize the disconnection of the power.

Further, a pressing spring 34 is provided between the guide block 31 and the first surface gear 32 . The provided pressing spring 34 will be compressed when the first surface gear 32 moves to the guide block 31, so that the first electromagnet 35 and the second electromagnet are powered off when the first surface gear 32 and the second surface gear 33 need to be meshed. Losing the effect of the magnetic force, the first surface gear 32 meshes with the second surface gear 33 under the action of the restoring force of the pressing spring 34 to realize the power connection.

Further, the mounting column 36 is provided with a sliding block in the axial direction, the middle part of the first surface gear 32 is provided with a guide hole, and the inner wall of the guide hole is provided with a sliding groove in the axial direction. The grooves are slidably fitted with the sliders. The cooperation between the sliding groove and the sliding block in this solution realizes the axial movement and the circumferential limit of the first surface gear 32 .

The above descriptions are only preferred embodiments of the present invention, and do not limit the present invention in any form. Any person skilled in the art, without departing from the scope of the technical solution of the present invention, can use the above-mentioned technical content to make many possible changes and modifications to the technical solution of the present invention, or be modified to equivalent embodiments of equivalent changes. . Therefore, any modifications, equivalent changes and modifications made to the above embodiments according to the technology of the present invention without departing from the content of the technical solution of the present invention all belong to the protection scope of the technical solution of the present invention.

Claims (5)

1. A fully automatic electronically controlled wrench for a narrow space, characterized in that it comprises a wrench base (1) and a wrench upper cover (22), and the wrench upper cover (22) is fixed on the wrench base (1) to form an interior. It is a housing structure with a cavity, a driving mechanism is arranged inside the housing, a sleeve (7) is arranged at the front end of the housing, and the driving mechanism drives the sleeve (7) to rotate; The drive mechanism includes a drive motor (18), a clutch mechanism and a deceleration mechanism, the power output end of the drive motor (18) is connected to the deceleration mechanism through the clutch mechanism, and the clutch mechanism controls the power connection between the drive motor (18) and the deceleration mechanism and interruption, the deceleration mechanism includes a plurality of deceleration assemblies (5), the deceleration assemblies include a connecting shaft (51), an input gear (52) and an output gear (53), the input gear (52) and the output gear ( 53) is fixed on the connecting shaft (51), the connecting shaft (51) is rotatably connected with the casing, the input gear (52) of the adjacent reduction assembly (5) meshes with the output gear (53), and the final stage The output gear (53) of the reduction assembly (5) is connected to a toothed belt (8), the toothed belt (8) is connected to the sleeve (7), and the diameter of the input gear (52) is larger than that of the output gear (53). ); The clutch mechanism includes two support seats (15), a mounting seat (3) is arranged between the support seats (15), and a main shaft is rotatably connected between the two support seats (15) and the mounting seat (3). (4), one end of one main shaft (4) is connected to the drive motor (18) through the coupling (17), and one end of the other main shaft (4) is provided with a bevel gear (30), the bevel gear (30) ) meshes with the input gear (52) of the deceleration mechanism, a first friction wheel (2) is provided on the two main shafts (4), and a mounting groove is provided on the upper part of the support seat (15), and the mounting groove A friction wheel axle support block (16) is slidably arranged, a support spring is provided at the bottom of the friction wheel axle support block (16), one end of the support spring is fixed at the bottom of the installation groove, and the friction wheel axle support block (16) is An electrically controlled pressure block (12) is arranged on the top, the top of the electrically controlled pressure block (12) is fixedly connected with the support seat (15), and a friction axle (14) is rotatably arranged between the two friction axle support blocks (16). , the friction wheel shaft (14) is provided with two second friction wheels (13), and the two second friction wheels (13) correspond to the two first friction wheels (2) respectively; The front end of the housing is provided with a rotating handle, the rotating handle includes a handle (6) and a rotating outer ring (9), the handle (6) is fixed on the rotating outer ring (9), and the rotating outer ring (9) is A rotating inner ring (10) is arranged inside the ring (9), a gap is arranged between the rotating outer ring (9) and the rotating inner ring (10), and a plurality of circumferential arrays are arranged on the rotating inner ring (10). an installation hole, a rotary handle push rod (11) is arranged in the installation hole, one end of the rotary handle push rod (11) is connected with a spring (28), and the other end of the spring (28) is fixed on the rotating handle On the inner wall of the outer ring (9), the rotating inner ring (10) is sleeved on the casing, and locking holes corresponding to the mounting holes are arranged in a circumferential array on the casing; The rear end of the casing is provided with a tail grip (20), the tail grip (20) is connected to a rotating block (19), an electromagnet is arranged inside the rotating block (19), and an electromagnet is arranged inside the casing. A fixed magnet (23) is provided, a rotating hole is provided on the wrench base (1), a rotating shaft is provided on the rotating block (19), and a bearing (25) is sleeved on the rotating shaft, and the bearing (25) ) is matched with the rotating hole, one end of the rotating shaft is provided with a rotating blocking piece (24), the end surface of the rotating blocking piece (24) is provided with a plurality of conductive heads (241), and also includes a docking plate (26), so The docking plate (26) is fixed on the wrench base (1), and a plurality of coaxially arranged conductive rings (27) are arranged on the docking plate (26). The ring (27) contacts the connection. 2 . The fully automatic electronically controlled wrench for narrow spaces according to claim 1 , wherein the front end of the housing is set in a stepped shape, and the front end of the housing is provided with a rotating grip block, 2 . The rotating handle block is sleeved and fixed on the casing, and is used to constrain the rotating outer ring (9) and the rotating inner ring (10) between the rotating handle block and the steps of the casing. 3 . The fully automatic electronically controlled wrench for narrow spaces according to claim 1 , wherein a display screen ( 21 ) is provided on the rotating block ( 19 ). 4 . 4 . The fully automatic electronically controlled wrench for narrow spaces according to claim 1 , wherein a torque sensor is provided on the coupling ( 17 ). 5 . 5 . The fully automatic electric control wrench for narrow spaces according to claim 1 , wherein a control button is provided on the tail grip ( 20 ). 6 .

Images