CN104786181A - Efficient screwing device - Google Patents

Abstract

The invention discloses a high-efficiency screwdriver, which comprises: a bracket, a motor, a belt transmission mechanism, a worm gear transmission mechanism and a sleeve rod; the motor and the worm gear transmission mechanism are fixed on the bracket; the belt transmission mechanism is connected The motor and the worm gear mechanism; the sleeve rod is arranged on the worm gear mechanism; the motor transmits torque to the sleeve rod through the belt drive mechanism and the worm gear mechanism; the The quill rod includes a quill shaft, a shaft sleeve port and a nut sleeve port; the quill shaft is a two-stage stepped shaft, the small stepped shaft of the quill shaft connects the shaft sleeve port, and the large step of the quill shaft The shaft connects to the nut sleeve port. Through the above method, the present invention can ensure the balance of the tightening torque of the nut, adapt to the operation requirements of the engine, and greatly save the loading and unloading speed of the engine nut; it is easy to use.

Description

A high-efficiency screw

technical field

The invention relates to the field of mechanical engineering, in particular to a high-efficiency screwdriver.

Background technique

The engine is the power unit of the car, and its performance directly affects the driver's control of the entire car. Compared with other components, the assembly technical requirements of the engine are much higher for the nut installation torque and the torque balance of each part. Newly delivered engines need to be installed in batches, and internal faults need to be cleared after equipment failures. Excessive requirements and dense installation locations have greatly affected the improvement of work efficiency. If the nuts can be installed in batches and the input torque can be quantitatively controlled, this problem can be effectively solved.

Contents of the invention

The technical problem mainly solved by the present invention is to provide a high-efficiency screwdriver, which can ensure the balance of the nut tightening torque, adapt to the operation requirements of the engine, and greatly save the loading and unloading speed of the engine nut; it is easy to use.

In order to solve the above-mentioned technical problems, a technical solution adopted by the present invention is to provide a high-efficiency screwdriver, including: a bracket, a motor, a belt transmission mechanism, a worm gear mechanism and a sleeve rod; the motor and the worm gear mechanism are fixed On the bracket; the belt transmission mechanism connects the motor and the worm gear transmission mechanism; the sleeve rod is arranged on the worm gear transmission mechanism; the motor passes through the belt transmission mechanism and the worm gear transmission mechanism The torque is transmitted to the sleeve rod; the sleeve rod includes a sleeve shaft, a shaft sleeve opening and a nut sleeve opening; the sleeve shaft is a two-stage stepped shaft, and the small stepped shaft of the sleeve shaft is connected to the The shaft sleeve port, the large stepped shaft of the sleeve shaft is connected to the nut sleeve port.

Preferably, the belt transmission mechanism includes a transmission belt, a small pulley and a large pulley; the worm gear transmission mechanism includes a housing, a worm wheel and a worm; the small pulley is connected to the motor through a transmission shaft; The large pulley is connected with the worm through a transmission shaft; the worm and the worm are arranged in the housing; and a plurality of worms are distributed on the worm.

Preferably, the shaft sleeve mouth is sleeved on the transmission shaft of the worm wheel; a circular groove is provided on the large stepped shaft end of the sleeve shaft, and the circular groove is sleeved on the shaft sleeve mouth There are notches distributed on the circumference position of the sleeve mouth of the shaft, and the position of the circular groove in the sleeve shaft relative to the notch is provided with a push rod groove, and a push rod is arranged in the push rod groove, and a push rod is arranged in the push rod groove. One end is covered with a small spring and fixed on the groove of the push rod through the small spring, and the other end of the push rod is against the gap; the mouth of the nut sleeve is sleeved on the small stepped shaft of the sleeve shaft; the sleeve A spring is sheathed on the small stepped shaft of the shaft, and the spring is connected to the mouth of the nut sleeve; a protrusion is provided on the small stepped shaft of the sleeve shaft, and a groove corresponding to the protrusion is provided on the mouth of the nut sleeve.

Preferably, the sleeve rod is covered with a limiting plate; a bearing is provided between the limiting plate and the sleeve rod.

The beneficial effects of the present invention are: the present invention can ensure the balance of the nut tightening torque, adapt to the operation requirements of the engine, and greatly save the loading and unloading speed of the engine nut; it is easy to use.

Description of drawings

Figure 1 is a schematic diagram of the front view of a preferred embodiment of a high-efficiency screwdriver in the present invention;

Fig. 2 is a top view structural schematic diagram of a high-efficiency screwdriver of the present invention;

Fig. 3 is a right-view structure schematic diagram of a high-efficiency screwdriver of the present invention;

Fig. 4 is a schematic diagram of the sleeve rod structure of a high-efficiency screwdriver of the present invention;

Fig. 5 is a schematic cross-sectional view of sleeve rod A-A of a high-efficiency screwdriver of the present invention;

Fig. 6 is a schematic cross-sectional view of sleeve rod B-B of a high-efficiency screwdriver of the present invention;

The marks of each part in the accompanying drawings are as follows: 1. bracket; 2. housing; 3. transmission belt; 4. large pulley; 5. worm; 6. worm wheel; 1, spring; 10, limit plate; 11, bearing; 12, motor; 13, small pulley; 14, ejector rod; 15, small spring; 16, shaft sleeve mouth.

Detailed ways

The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

Please refer to Fig. 1 to Fig. 6, the embodiment of the present invention comprises:

A high-efficiency screwdriver, comprising: a bracket 1, a motor 12, a belt transmission mechanism, a worm and gear transmission mechanism and a sleeve rod; the motor 12 and the worm and gear transmission mechanism are fixed on the bracket 1; the belt transmission mechanism is connected to The motor 12 and the worm gear mechanism; the sleeve rod is arranged on the worm gear mechanism; the motor 12 transmits torque to the sleeve rod through the belt drive mechanism and the worm gear mechanism; The sleeve rod includes a sleeve shaft 8, a shaft sleeve opening 16 and a nut sleeve opening 7; the sleeve shaft 8 is a two-stage stepped shaft, which can be better connected with the shaft sleeve opening 16 and the nut sleeve opening 7 connection; the small stepped shaft of the sleeve shaft 8 is connected to the shaft sleeve port 16, and the large stepped shaft of the sleeve shaft 8 is connected to the nut sleeve port 7. Described belt transmission mechanism comprises transmission belt 3, small pulley 13 and large pulley 4; Described worm gear transmission mechanism comprises casing 2, worm wheel 6 and worm screw 5; Described small pulley 13 is connected with described motor 12 by transmission shaft Connect, the motor 12 rotates and drives the small pulley 13 to rotate through the transmission shaft; the transmission belt 3 is sleeved on the small pulley 13 and the large pulley 4, and the small pulley 13 transmits power to the large pulley 4 through the transmission belt 3; Described large belt pulley 4 is connected with described worm screw 5 by transmission shaft, and large belt pulley 14 can drive worm screw 5 to rotate; Described worm wheel 6 and worm screw 5 are arranged in described housing 2, can support worm wheel 6 worm screw 5, guarantee The transmission of the worm gear 6 and the worm 5; a plurality of worm gears 6 are distributed on the worm 5. The shaft sleeve mouth 16 is sleeved on the transmission shaft of the worm wheel 6, and the worm wheel 6 can drive the sleeve rod to rotate; the large stepped shaft end of the sleeve shaft 8 is provided with a circular groove, and the circular groove Sleeve on the shaft sleeve mouth 16; there are notches distributed on the circumference of the shaft sleeve mouth 16, and the position of the circular groove in the sleeve shaft 8 relative to the notch is provided with a push rod groove. A push rod 14 is arranged in the rod groove, and one end of the push rod 14 is covered with a small spring 15 and fixed on the push rod groove through the small spring 15, and the other end of the push rod 14 is against the gap to ensure that the resistance torque is too large , the small spring 15 with stronger rigidity will be compressed, the push rod 14 will be compressed into the groove of the push rod, the sleeve shaft 8 can continue to rotate, and the sleeve mouth 7 set on the nut will not move, ensuring that other The sleeve rod can work normally; the nut sleeve mouth 7 is sleeved on the small stepped shaft of the sleeve shaft 8; a spring 9 is sleeved on the small stepped shaft of the sleeve shaft 8, and the spring 9 is connected to the nut Sleeve mouth 7, spring 9 can guarantee that nut sleeve mouth 7 is aligned with nut quickly; The small stepped shaft of described sleeve shaft 8 is provided with projection, and described nut sleeve mouth 7 is provided with corresponding to projection. Groove, lug is stuck in the groove and can guarantee that sleeve shaft 8 drives nut sleeve mouth 7 to rotate synchronously when rotating. The sleeve rod is covered with a limit plate 10, the limit plate 10 can support all the sleeve rods, and the position of the sleeve rod is limited to ensure the stability of the sleeve rod during rotation; the limit plate Bearing 11 is arranged between 10 and sleeve rod, and bearing 11 can be convenient to sleeve rod to rotate.

When the sleeve rod is positioned with the entire row of nuts, it is difficult to keep the hexagonal direction of each nut consistent; but because the sleeve rod is always in a rotating state when working, the nut sleeve mouth 7 will be compressed by the spring 9, and when the nut When it is aligned with the nut sleeve mouth 7, it can be inserted immediately, and the alignment of multiple nuts can be realized in a short period of time. With the motor 12 as the driving element, the torque is transmitted to each sleeve rod one by one through the belt transmission mechanism and the worm gear transmission mechanism, and finally acts on the nut to complete the loading and unloading of the engine.

When the engine nut needs to be disassembled, the motor 12 is powered, and the torque is output to the worm 5 through the transmission of the belt transmission mechanism, and the worm wheel 6 meshing with the worm 5 starts to rotate, and the worm wheel 6 drives the sleeve rod to rotate, and the sleeve rod Put it on the engine nut and unscrew the nut. When some nuts are rusted or assembled too tightly, the resistance torque is too large, the small spring 15 with stronger rigidity will be compressed, the push rod 14 will be compressed into the push rod groove, and the quill shaft 8 can continue to rotate, and the The nut sleeve mouth 7 on the nut sleeve does not move, so that other sleeve rods can work normally; and this nut adopts a special tool to disassemble.

The invention can ensure the balance of the tightening torque of the nuts, adapt to the running requirements of the engine, save the loading and unloading speed of the engine nuts to a large extent, and is easy to use.

The above is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related technologies fields, all of which are equally included in the scope of patent protection of the present invention.

Claims (4)

1. an efficient stubborn tool, is characterized in that, comprising: support, motor, tape handler, Worm and worm-wheel gearing and socket bar; Described motor and Worm and worm-wheel gearing are fixed on the bracket; Described tape handler connects described motor and Worm and worm-wheel gearing; Described socket bar is arranged on described Worm and worm-wheel gearing; Moment of torsion is passed to described socket bar by described tape handler and Worm and worm-wheel gearing by described motor; Described socket bar comprises quill, axle sleeve nozzle and nut sleeve nozzle; Described quill is secondary multidiameter, and the little multidiameter of quill connects described axle sleeve nozzle, and the large multidiameter of quill connects described nut sleeve nozzle.

2. one according to claim 1 efficiently twists tool, it is characterized in that: described tape handler comprises driving-belt, small pulley and large belt wheel; Described Worm and worm-wheel gearing comprises housing, worm gear and worm screw; Described small pulley is connected with described motor by power transmission shaft; Described large belt wheel is connected with described worm screw by power transmission shaft; Described worm gear and worm screw are arranged in described housing; Described worm screw is distributed with multiple worm gear.

3. one according to claim 2 efficiently twists tool, it is characterized in that: described shaft sleeve muzzle is on the power transmission shaft of described worm gear; The large ladder axle head of described quill is provided with circular groove, and circular groove is enclosed within described axle sleeve nozzle; Described axle sleeve nozzle circumferential position is distributed with breach, on circular groove in described quill, the position of opposed notches is provided with push rod groove, be provided with push rod in push rod groove, one end cover of push rod has little spring and is fixed on push rod groove by little spring, and the other end of push rod is against on breach; Described ut socket muzzle is on the little multidiameter of described quill; On the little multidiameter of described quill, cover has spring, and spring connects described nut sleeve nozzle; The little multidiameter of described quill is provided with projection, and described nut sleeve nozzle is provided with the groove corresponding with projection.

4. one according to claim 3 efficiently twists tool, it is characterized in that: described socket bar overlaps limited location plate; Bearing is provided with between described limiting plate and socket bar.