CN111069890A

CN111069890A - Nut tightening device

Info

Publication number: CN111069890A
Application number: CN201911415646.5A
Authority: CN
Inventors: 张宇; 蔡勇; 蔡应龙; 聂坤鹏; 朱辉; 胡宝胜; 徐冲
Original assignee: Wuhan Tongben Auto Parts Co Ltd
Current assignee: Wuhan Tongben Auto Parts Co Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-04-28

Abstract

The invention belongs to the technical field of electric power tools, and particularly relates to a nut screwing device which comprises a fixed plate and a mounting plate, wherein connecting rods are welded at the top and the bottom of the outer wall of one side, opposite to the fixed plate and the mounting plate, of the fixed plate, a driving motor is fixed at the position, close to the center of one side of the mounting plate, of the fixed plate through a bolt, a single fixing head mechanism is fixed at one side, far away from the driving motor, of the fixed plate, and the single fixing head mechanism comprises an electric slip ring fixed on the outer wall of the fixed plate, a transmission pipe sleeved in the electric slip ring, and a fixing head welded at one. The fixing head can be adjusted according to the specification of the screwed nuts, is suitable for nuts with different specifications, saves the time for replacing the fixing head, avoids the loss of the fixing head, can be used for disassembling and screwing one or more nuts, and can be driven by the same driving motor to simultaneously disassemble or screw the nuts, thereby improving the efficiency and saving the time.

Description

Nut tightening device

Technical Field

The invention relates to the technical field of electric power tools, in particular to a nut screwing device.

Background

The Nut is also called Nut (English: Nut) and is a fixing tool, the center of which is provided with a hole, and the inner side of the hole is provided with threads. Nuts, which are parts for tightly connecting mechanical equipment, are often used in conjunction with screws of the same size to secure the relevant joints, and nuts and bolts of the same size can only be connected together by means of internal threads.

The existing nut tightening device comprises a fixed specification wrench, a movable wrench and an electric tightening device which are manually used, the nut tightening efficiency is low, the manpower loss is large, the cost is high, the existing electric tightening device drives a tightening head to tighten a nut through a motor, but the specification of the tightening head is fixed, only the nut with a single specification can be used, and only one tightening head can be driven by one motor.

Disclosure of Invention

Based on the problems posed by the background art, the invention provides a nut tightening device.

The invention provides a nut screwing device, which comprises a fixed plate and a mounting plate, wherein connecting rods are welded at the top and the bottom of the outer wall of one side of the fixed plate, which is opposite to the mounting plate, a driving motor is fixed at the position, which is close to the center of one side of the mounting plate, of the fixed plate through a bolt, a single fixing head mechanism is fixed at one side, which is far away from the driving motor, of the fixed plate, the single fixing head mechanism comprises an electric slip ring fixed on the outer wall of the fixed plate, a transmission pipe sleeved in the electric slip ring, and a fixing head welded at one end, which is far away from the electric slip ring, of the transmission pipe, the fixing head comprises a fixing pipe, six mounting holes distributed at equal intervals are formed in the inner wall of the fixing pipe, air cylinders are fixed in the six mounting holes, clamping plates positioned in the fixing pipe are fixed on piston rods of the six air, the welding of fixed plate bottom has first handle, the welding of mounting panel bottom has the second handle.

Preferably, the splint are close to both sides of fixed pipe one side outer wall and all have welded the telescopic link, and the telescopic link includes sleeve pipe and slidable mounting the connecting rod on the intraductal wall of cover.

Preferably, six of the splints form a regular hexagonal shaped structure.

Preferably, the first handle and the second handle are both of a frame-shaped structure, three grooves which are distributed equidistantly are formed in the inner walls of the first handle and the second handle far away from the fixing head in the vertical direction, and rubber layers are bonded on the inner walls of the grooves.

Preferably, an air pump switch is fixed on the inner wall of the first handle, and a motor switch is fixed on the inner wall of the second handle.

Preferably, the miniature air pump is electrically connected with the electric slip ring through a wire, the electric slip ring and the air pump switch are mutually connected in series, the driving motor and the motor switch are mutually connected in series, the driving motor and the miniature air pump are mutually connected in parallel, the motor switch is connected with a power line, and the middle part of the power line is connected with a reverse switch.

Preferably, the outer wall of one side of the fixing plate, which is far away from the driving motor, is provided with a multi-fixing-head mechanism, and the multi-fixing-head mechanism is composed of a single-fixing-head mechanism and a plurality of single-fixing-head mechanisms which are annularly and equidistantly distributed on the single-fixing-head mechanism.

Preferably, the single fixed head mechanism positioned at the center is sleeved with a driving gear, a plurality of single fixed head mechanisms surrounding the single fixed head mechanism are sleeved with driven gears, and the driving gear is meshed with the driven gears.

The beneficial effects of the invention are as follows:

1. the six fixing heads on the single-head fixing mechanism are provided with the cylinders which can be inflated through the miniature air pump, so that piston rods of the six cylinders are extended to drive the six clamping plates to be close to each other, the six clamping plates can be adjusted according to the specification of the nut screwed down as required, the nut screwing device is suitable for nuts of different specifications, the time for replacing the fixing heads is saved, and the fixing heads are prevented from being lost;

2. the multi-head fixing mechanism can be used for adjusting the position distribution of a plurality of nuts which can be detached as required, and is driven by the same driving motor to detach or screw up the plurality of nuts simultaneously, so that the efficiency is improved, and the time is saved.

Drawings

FIG. 1 is a schematic view of a single fixture head of a nut tightening apparatus according to the present invention;

FIG. 2 is a schematic view of a fixing head structure of a nut tightening device according to the present invention;

FIG. 3 is a schematic view of a multi-fixture head structure of a nut tightening apparatus according to the present invention;

fig. 4 is a schematic view of a multi-fixing-head transmission structure of a nut tightening device according to the present invention.

In the figure: the air pump comprises a fixing plate 1, a mounting plate 2, a connecting rod 3, a driving motor 4, a transmission pipe 5, a fixing head 6, a fixing pipe 7, a clamping plate 8, an air cylinder 9, a telescopic rod 10, an air conveying pipe 11, a miniature air pump 12, an air guide pipe 13, a first handle 14, a second handle 15, a groove 16, an air pump switch 17, a power line 18, a driving gear 19, a driven gear 20, an electric slip ring 21, a motor switch 22 and a lead 23.

Detailed Description

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, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Embodiment 1, referring to fig. 1-2, a nut tightening device includes a fixing plate 1 and a mounting plate 2, connecting rods 3 are welded at the top and bottom of the outer wall of one side of the fixing plate 1 opposite to the mounting plate 2, a driving motor 4 is fixed at the position of the fixing plate 1 close to the center of one side of the mounting plate 2 through bolts, a single fixing head mechanism is fixed at one side of the fixing plate 1 far from the driving motor 4, the single fixing head mechanism includes an electric slip ring 21 fixed on the outer wall of the fixing plate 1, a transmission tube 5 sleeved in the electric slip ring 21, and a fixing head 6 welded at one end of the transmission tube 5 far from the electric slip ring 21, the fixing head 6 includes a fixing tube 7, six mounting holes distributed at equal intervals are formed on the inner wall of the fixing tube 7, cylinders 9 are fixed in the six mounting holes, splints 8 located in the fixing tube 7 are fixed on piston rods of the six cylinders 9, the two sides of the outer wall of one side of the clamping plate 8, which is close to the fixed pipe 7, are respectively welded with a telescopic rod 10, the telescopic rods comprise a sleeve and a connecting rod which is slidably arranged on the inner wall of the sleeve, the six cylinders 9 are sequentially communicated through a gas pipe 11, one of the cylinders 9 is connected with a miniature air pump 12 which is fixed on the outer wall of the transmission pipe 5 through a gas pipe 13, the bottom of the fixed plate 1 is welded with a first handle 14, the bottom of the mounting plate 2 is welded with a second handle 15, the first handle 14 and the second handle 15 are both in frame-shaped structures, three grooves 16 which are distributed equidistantly are respectively arranged on the inner walls of the first handle 14 and the second handle 15, which are far away from the fixed head 6, in the vertical direction, the inner wall of each groove 16 is bonded with a rubber layer, an air pump switch 17 is fixed on the inner wall of the first handle 14, the electric slip ring 21 and the air pump switch 17 are connected in series, the driving motor 4 and the motor switch 22 are connected in series, the driving motor 4 and the micro air pump 12 are connected in parallel, the motor switch 22 is connected with the power line 18, and the middle of the power line 18 is connected with the reverse switch.

Embodiment 2, referring to fig. 2 to 4, a nut tightening device includes a fixing plate 1 and a mounting plate 2, a connecting rod 3 is welded at the top and bottom of the outer wall of one side of the fixing plate 1 opposite to the mounting plate 2, a driving motor 4 is fixed at a position of the fixing plate 1 close to the center of the mounting plate 2 by bolts, a multi-fixing-head mechanism is arranged on the outer wall of one side of the fixing plate 1 far away from the driving motor 4, the multi-fixing-head mechanism is composed of a single-fixing-head mechanism and a plurality of single-fixing-head mechanisms annularly and equidistantly distributed on the single-fixing-head mechanism, a driving gear 19 is sleeved on the single-fixing-head mechanism at the center, and a plurality of single-fixing-head mechanisms arranged around the single-fixing-head mechanism are all sleeved with a driven gear 20, the driving gear 19 is meshed with the driven gear 20, the electric slip ring comprises a transmission pipe 5 sleeved in an electric slip ring 21, and a fixing head 6 welded at one end of the transmission pipe 5 far away from the electric slip ring 21, wherein the fixing head 6 comprises a fixing pipe 7, the inner wall of the fixing pipe 7 is provided with six mounting holes distributed at equal intervals, cylinders 9 are fixed in the six mounting holes, piston rods of the six cylinders 9 are respectively fixed with a clamping plate 8 positioned in the fixing pipe 7, the six clamping plates 8 form a regular hexagonal structure, two sides of the outer wall of one side, close to the fixing pipe 7, of the clamping plate 8 are respectively welded with a telescopic rod 10, each telescopic rod comprises a sleeve and a connecting rod slidably mounted on the inner wall of the sleeve, the six cylinders 9 are sequentially communicated through a gas pipe 11, one of the cylinders 9 is connected with a miniature air pump 12 fixed on the outer wall of the transmission pipe 5 through a gas guide pipe 13, the bottom of the fixing plate 1 is welded with a first handle 14, the bottom, and the inner walls of the first handle 14 and the second handle 15 far away from the fixing head 6 are respectively provided with three grooves 16 distributed at equal intervals along the vertical direction, the inner walls of the grooves 16 are bonded with rubber layers, the inner wall of the first handle 14 is fixed with an air pump switch 17, the inner wall of the second handle 15 is fixed with a motor switch 22, the miniature air pump 12 is electrically connected with an electric slip ring 21 through a lead 23, the electric slip ring 21 and the air pump switch 17 are mutually connected in series, the driving motor 4 and the motor switch 22 are mutually connected in series, the driving motor 4 and the miniature air pump 12 are mutually connected in parallel, the motor switch 22 is connected with a power line 18, and the middle part of the power line 18 is connected with a reversing switch.

When a single nut needs to be disassembled and tightened, the tightening device only provided with a single fixing head mechanism is used, the driving motor 4 is enabled to rotate clockwise by adjusting the reversing switch, the fixing head 6 is sleeved outside the nut, the air pump switch 17 is closed, the miniature air pump 12 supplies air to the six air cylinders 9, piston rods of the six air cylinders 9 drive the six clamping plates 8 to move and clamp the six outer walls of the nut, the motor switch 22 is closed, the driving motor 4 drives the transmission pipe 5 and the fixing head 6 to rotate, the nut is tightened, the transmission pipe 5 rotates in the process, the electric slip ring 21 can maintain the power supply stability of the miniature air pump 12, the reversing switch is adjusted to enable the driving motor 4 to rotate anticlockwise, and the nut can be disassembled by the fixing head 6.

When a plurality of nuts need to be disassembled or screwed down, a plurality of single fixing head mechanisms are arranged according to the fixing positions of the nuts, transmission is formed among the single fixing head mechanisms through gears, and the nuts can be disassembled by simultaneously driving the single fixing head mechanisms through the driving motor 4.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The nut screwing device comprises a fixed plate (1) and a mounting plate (2), and is characterized in that a connecting rod (3) is welded at the top and the bottom of the outer wall of one side of the fixed plate (1) and the mounting plate (2) opposite to each other, a driving motor (4) is fixed at the position, close to the center of one side of the mounting plate (2), of the fixed plate (1) through a bolt, a single fixing head mechanism is fixed at one side, away from the driving motor (4), of the fixed plate (1), and comprises an electric slip ring (21) fixed on the outer wall of the fixed plate (1), a transmission pipe (5) sleeved in the electric slip ring (21) and a fixing head (6) welded at one end, away from the electric slip ring (21), of the transmission pipe (5), wherein the fixing head (6) comprises a fixing pipe (7), six mounting holes distributed equidistantly are formed in the inner wall of the fixing pipe (7), and cylinders (9) are, all be fixed with splint (8) that are located fixed pipe (7), six on the piston rod of six cylinder (9) communicate in proper order through gas-supply pipe (11), and one of them cylinder (9) are connected with through air duct (13) and are fixed in miniature air pump (12) on driving pipe (5) outer wall, fixed plate (1) bottom welding has first handle (14), the welding of mounting panel (2) bottom has second handle (15).

2. The nut tightening device according to claim 1, wherein the clamp plate (8) has a telescopic rod (10) welded to both sides of an outer wall of one side thereof adjacent to the fixed tube (7), and the telescopic rod includes a sleeve and a connecting rod slidably mounted on an inner wall of the sleeve.

3. A nut tightening device according to claim 1, wherein six of the clamping plates (8) constitute a regular hexagonal structure.

4. The nut screwing device according to claim 1, wherein the first handle (14) and the second handle (15) are both frame-shaped structures, three grooves (16) are formed in the inner walls of the first handle (14) and the second handle (15) far away from the fixing head (6) and are distributed at equal intervals along the vertical direction, and rubber layers are bonded on the inner walls of the grooves (16).

5. A nut tightening device according to claim 1, wherein an air pump switch (17) is fixed to the inner wall of the first grip (14), and a motor switch (22) is fixed to the inner wall of the second grip (15).

6. The nut tightening device according to claim 1, wherein the micro air pump (12) is electrically connected with the electrical slip ring (21) through a lead (23), the electrical slip ring (21) and the air pump switch (17) are connected in series, the driving motor (4) and the motor switch (22) are connected in series, the driving motor (4) and the micro air pump (12) are connected in parallel, the motor switch (22) is connected with the power line (18), and the middle of the power line (18) is connected with the reverse switch.

7. A nut tightening device according to claim 1, wherein the outer wall of the fixing plate (1) on the side away from the driving motor (4) is provided with a multi-fixing-head mechanism, and the multi-fixing-head mechanism is composed of a single-fixing-head mechanism and a plurality of single-fixing-head mechanisms annularly and equidistantly distributed on the single-fixing-head mechanism.

8. A nut tightening device according to claim 1, wherein a driving gear (19) is sleeved on the single fixed head mechanism located at the center, and a driven gear (20) is sleeved on each of the plurality of single fixed head mechanisms arranged around the single fixed head mechanism, and the driving gear (19) is meshed with the driven gear (20).