CN215699572U

CN215699572U - Circumferentially distributed group bolt fastening device

Info

Publication number: CN215699572U
Application number: CN202121704696.8U
Authority: CN
Inventors: 余尚宇; 吴立华; 董继勇
Original assignee: Nanjing Cigu Technology Co Ltd
Current assignee: Nanjing Cigu Technology Co Ltd
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2022-02-01
Anticipated expiration: 2031-07-26

Abstract

The utility model discloses a circumferentially distributed group bolt fastening device which comprises a gear box, wherein the gear box comprises an upper end cover and a lower end cover; a planetary wheel structure is arranged in the gear box, the planetary wheel structure comprises a sun wheel positioned in the center and planetary wheels uniformly distributed around the sun wheel, the sun wheel is meshed with the planetary wheels, a main shaft is arranged in the center of the sun wheel, the main shaft is connected with a power source for driving the sun wheel to rotate, a driven shaft is arranged in the center of the planetary wheel, and the end part of the driven shaft penetrates through a lower end cover of the gear box and is connected with a bolt aligning mechanism for connecting with a bolt; the utility model utilizes gear transmission to simultaneously drive the planet wheels to rotate in an approximately simultaneous state, all bolts are synchronously screwed in, the stress of assembled parts is ensured to be uniform, the assembling quality is improved, the torque overload protection chuck carries out overload protection, and the bolts are aligned with the alignment sleeve to ensure that the bolts cannot be skewed; the operation is simple, the working efficiency is high, the investment cost is low, and the automatic production line can be matched for use.

Description

Circumferentially distributed group bolt fastening device

Technical Field

The utility model relates to the technical field of mechanical assembly, in particular to a circumferentially distributed group bolt fastening device.

Background

As a common mechanical connection mode, bolts need to be screwed in the mechanical manufacturing process, some bolts are regularly distributed, and the number of the bolts is large. For example, in a magnetic suspension motor assembly, a motor base is connected with a motor shell through 16M 10 bolts and uniformly distributed on the same circumference. Generally, a worker screws bolts one by using a wrench, so that the working efficiency of motor assembly is extremely low, and in the process of screwing the bolts, if an operator does not screw the bolts in a correct sequence, assembly difficulty can occur among parts, and product parts can be deformed or even damaged and scrapped seriously.

SUMMERY OF THE UTILITY MODEL

The technical purpose is as follows: aiming at the defects that the existing circumferentially distributed bolt fastening mainly depends on manual tightening, long time is consumed for dismounting and mounting, and the working efficiency is low, the utility model discloses a circumferentially distributed group bolt fastening device which can synchronously perform bolt tightening after positioning and has high assembly efficiency.

The technical scheme is as follows: in order to achieve the technical purpose, the utility model adopts the following technical scheme:

a circumferentially distributed group bolt fastening device comprises a gear box, wherein the gear box comprises an upper end cover and a lower end cover; set up the planet wheel structure in the gear box, the planet wheel structure is including the sun gear that is located the center and the planet wheel of equipartition around the sun gear, sun gear and planet wheel intermeshing, the sun gear center is equipped with the main shaft, the main shaft with be used for driving sun gear pivoted power supply and be connected, be equipped with the driven shaft at the planet wheel center, the tip of driven shaft passes the lower tip of gear box and is connected with the bolt alignment mechanism that is used for with bolted connection.

Preferably, the bolt aligning mechanism of the utility model comprises a screwdriver bit which is matched and connected with the end part of the bolt, the upper part of the screwdriver bit is provided with a torque overload protection chuck, the top of the torque overload protection chuck is connected with the driven shaft, the lower part of the screwdriver bit clamps the screwdriver bit, the lower part of the screwdriver bit is provided with a bolt aligning sleeve which is used for assisting the connection of the screwdriver bit and the bolt, the bolt aligning sleeve is concentrically sleeved on the outer ring of the screwdriver bit, the lower part of the bolt aligning sleeve is provided with an aligning hole which is matched and connected with the bolt, and the lower end part of the screwdriver bit is positioned in the aligning hole.

Preferably, the bolt alignment sleeve is embedded with an outer magnetic ring and an inner magnetic ring for adsorbing the bolt in the alignment hole, and the inner magnetic ring is positioned at the top of the alignment hole and sleeved on the outer ring of the screwdriver head; the outer magnetic ring is positioned at the lower end of the aligning hole.

Preferably, the upper end of the main shaft penetrates through the upper end cover of the gear box and then is connected with the power source, and first bearings are arranged at the joints of the main shaft, the upper end cover and the lower end cover; the upper end cover is provided with a base which is used for concentrically fixing the power source on the outer ring of the main shaft, the base fixes the power source, and a power shaft of the power source is connected with the main shaft in a matching way.

Preferably, the center of the main shaft is provided with a square hole for connecting with the power shaft.

Preferably, a second bearing is arranged at the joint of the driven shaft and the gear box, a driven shaft end cover for plugging the top of the driven shaft is arranged on the upper end cover, and the driven shaft end cover is in screw connection with the driven shaft through a driven shaft end cover.

Preferably, the upper end cover and the lower end cover of the gear box are connected through end cover screws, and the upper end cover is provided with hanging rings which are uniformly distributed by taking the main shaft as the center.

Preferably, the side surface of the lower end cover is provided with a handle for assisting in pressing down for bolt fastening, the handle is symmetrically arranged relative to the gear box, and the handle is provided with a switch for operating the power source.

Has the advantages that: the circumferentially distributed group bolt fastening device provided by the utility model has the following beneficial effects:

1. the bolt aligning mechanism is directly driven by the power source to screw the bolt after the bolt is placed in the bolt aligning mechanism, so that the bolt aligning mechanism is simple and convenient to operate and high in working efficiency. The assembly speed is improved.

2. According to the utility model, all the bolts are screwed in approximately synchronously through the planetary wheel structure, so that the stress uniformity of the assembled parts is ensured, and the assembling quality is improved.

3. The utility model can automatically adjust according to the distribution and the quantity of the bolts, has flexible use and low investment cost, and can be matched with an automatic production line for use.

4. The main shaft of the utility model is provided with the square hole for connection, so that the power source can be rapidly disassembled, the movement of storage is convenient, and the maintenance is convenient.

5. The bolt aligning mechanism is provided with the overload protection chuck, so that the overload protection chuck does not exceed the final fastening torque value, the equipment is protected, and the safety is improved.

6. According to the utility model, the external magnetic ring and the internal magnetic ring for adsorbing the bolt are embedded in the aligning hole, and the internal and external strong magnetic rings can adsorb the target bolt so as not to fall off downwards before being screwed.

7. The upper end cover is provided with the hanging ring, and the hanging ring is matched with the tension balancer, so that the device and the bolt can be conveniently detached.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.

FIG. 1 is an overall structural view of the present invention;

FIG. 2 is a schematic diagram of a planet gear of the present invention;

FIG. 3 is a front cross-sectional view of the present invention;

the automatic gearbox comprises a gear box 1, an upper end cover 2, a lower end cover 3, a sun wheel 4, a planet wheel 5, a main shaft 6, a driven shaft 7, a power source 8, a bolt aligning structure 9, a screwdriver head 10, an overload protection chuck 11, a bolt aligning sleeve 12, an aligning hole 13, a bolt 14, an external magnetic ring 15, an internal magnetic ring 16, a first bearing 17, a base 18, a second bearing 19, a driven shaft end cover 20, a driven shaft end cover screw 21, an end cover screw 22, a lifting ring 23, a handle 24 and a switch 25.

Detailed Description

The present invention will be more clearly and completely described below by way of a preferred embodiment in conjunction with the accompanying drawings, without thereby limiting the scope of the utility model to the described embodiment.

As shown in fig. 1 and 2, the circumferentially distributed group bolt fastening device provided by the utility model comprises a gear case 1, wherein the gear case 1 comprises an upper end cover 2 and a lower end cover 3; set up the planet wheel structure in gear box 1, the planet wheel structure is including being located central sun gear 4 and the planet wheel 5 of equipartition around the sun gear, sun gear 4 and planet wheel 5 intermeshing, sun gear 4 center is equipped with main shaft 6, main shaft 6 is connected with the power supply 8 that is used for driving sun gear pivoted, is equipped with driven shaft 7 at planet wheel 5 center, the tip of driven shaft 7 passes the lower end cover 3 of gear box and is connected with the bolt aligning mechanism 9 that is used for being connected with bolt 14.

As shown in fig. 3, the upper end cover 2 and the lower end cover 3 of the gear box 1 are connected through an end cover screw 22, a hanging ring 23 is arranged on the upper end cover 2, the hanging ring 23 is uniformly distributed by taking a main shaft as a center, a handle 24 for assisting in pressing down to perform bolt fastening is arranged on the side surface of the lower end cover 3, the handle 24 is symmetrically arranged relative to the gear box, a switch 25 for controlling a power source is arranged on the handle 24, the handle is connected with a tension balancer through the hanging ring 23, and after the bolt fastening is completed, the fastening device can be easily folded upwards under the action of tension.

The upper end of a main shaft 6 penetrates through an upper end cover 2 of a gear box and then is connected with a power source 8, first bearings 17 are arranged at the joints of the main shaft 6, the upper end cover 2 and a lower end cover 3, and a square hole for connecting with a power shaft is formed in the center of the main shaft 6; the upper end cover 2 is provided with a base 18 for concentrically fixing a power source on the outer ring of the main shaft 6, the base 18 fixes the power source 8, a power shaft of the power source is connected with the main shaft in a matching way, and the square hole is designed, so that the power source is convenient to detach and maintain and has small limitation on the power source.

The joint of the driven shaft 7 and the gear box 1 is provided with a second bearing 19, the upper end cover 2 is provided with a driven shaft end cover 20 used for plugging the top of the driven shaft, and the driven shaft end cover 20 is connected with the driven shaft 7 through a driven shaft end cover screw 21, so that the driven shaft can be conveniently assembled, and meanwhile, the overall appearance effect of the device is ensured.

The bolt alignment mechanism 9 of the present invention includes a bit 10 for mating engagement with the end of a bolt 14, the upper part of the bit 10 is provided with a moment overload protection chuck 11, the top of the moment overload protection chuck 11 is connected with the driven shaft 7, before tightening, each moment overload protection chuck is adjusted according to the moment required by the bolt fastening of the parts so as to ensure that the moment overload protection chuck does not exceed the final fastening moment value, the lower part of the moment overload protection chuck 11 clamps the batch head 10, the lower part of the batch head 10 is provided with a bolt aligning sleeve 12 for assisting the connection of the batch head and a bolt 14, the bolt aligning sleeve 12 is concentrically sleeved on the outer ring of the batch head 10, the lower part of the bolt aligning sleeve is provided with an aligning hole 13 for being connected with the bolt 14 in a matching way, the lower end part of the batch head 10 is positioned in the aligning hole 13, the bolt 14 is filled and inserted into the aligning hole 13, and the batch head is inserted into a connecting counter hole at the end part of the bolt in the insertion process.

An outer magnetic ring 15 and an inner magnetic ring 16 for adsorbing the bolt are embedded in the aligning hole of the bolt aligning sleeve 12, and the inner magnetic ring 16 is positioned at the top of the aligning hole 13 and is sleeved on the outer ring of the batch head 10; the outer magnetic ring 15 is positioned at the lower end of the aligning hole 13, and the inner and outer strong magnetic rings can attract the target bolt so that the target bolt cannot fall off downwards before being screwed down.

When the circumferentially distributed group bolt fastening device disclosed by the utility model is used, a pneumatic or electric wrench is adopted as a power source, the square head of the power source is aligned and inserted into the square hole of the main shaft, the power source is locked and fixed by the base 18 and is kept connected with the main shaft 6, and then each moment overload protection chuck 11 is adjusted according to the moment required by bolt fastening of parts, so that the moment overload protection chuck does not exceed the final fastening moment value, and the overload protection is performed in the screwing process, so that the device and the product are prevented from being damaged; selecting a tension balancer with the bearing weight meeting the use requirement, fixing the tension balancer above an assembly station, and hanging a bolt fastening device on the tension balancer through three hanging rings; the bolts to be fastened are filled and inserted into the bolt aligning sleeve 12, the hexagon socket head is inserted into the hexagon socket holes of the bolts in the inserting process, and the inner magnetic ring and the outer magnetic ring can attract the target bolts so that the target bolts cannot fall off downwards before being screwed; after all the bolts are installed, the fastener device is pressed down from the balancer through the handle 24, the bolts 14 are inserted in alignment with the screw holes, the switch 25 is started, the sun wheel 4 drives the planet wheels 5 to rotate through gear transmission, each bolt rotates synchronously, all the bolts are screwed into the threaded holes of the parts at the same time, and fastening is completed; and finally, lifting the fastening device, wherein the fastening device can be easily separated from the bolt under the action of the tension balancer, and is folded upwards for next use.

The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the utility model and these are intended to be within the scope of the utility model.

Claims

1. A circumferentially distributed group bolt fastening device is characterized by comprising a gear box (1), wherein the gear box (1) comprises an upper end cover (2) and a lower end cover (3); set up the planet wheel structure in gear box (1), the planet wheel structure is including sun gear (4) and the planet wheel (5) of equipartition around the sun gear that are located the center, sun gear (4) and planet wheel (5) intermeshing, sun gear (4) center is equipped with main shaft (6), main shaft (6) are connected with power supply (8) that are used for driving sun gear pivoted, be equipped with driven shaft (7) at planet wheel (5) center, the tip of driven shaft (7) passes lower cover (3) of gear box and is connected with the bolt alignment mechanism (9) that are used for being connected with bolt (14).

2. The circumferentially distributed group bolt fastening device according to claim 1, wherein the bolt aligning mechanism (9) comprises a screwdriver bit (10) which is used for being connected with the end part of the bolt in a matched mode, a torque overload protection chuck (11) is arranged at the upper part of the screwdriver bit (10), the top of the torque overload protection chuck (11) is connected with the driven shaft (7), the screwdriver bit (10) is clamped by the lower part of the torque overload protection chuck, a bolt aligning sleeve (12) which is used for assisting the screwdriver bit to be connected with the bolt (14) is arranged at the lower part of the screwdriver bit (10), the bolt aligning sleeve (12) is concentrically sleeved on the outer ring of the screwdriver bit (10), an aligning hole (13) which is used for being connected with the bolt (14) in a matched mode is arranged at the lower part of the bolt aligning sleeve, and the lower end part of the screwdriver bit (10) is located in the aligning hole (13).

3. The circumferentially distributed group bolt fastening device according to claim 2, wherein the bolt aligning sleeve (12) is embedded with an outer magnetic ring (15) and an inner magnetic ring (16) for adsorbing bolts in the aligning hole, and the inner magnetic ring (16) is positioned at the top of the aligning hole (13) and sleeved on the outer ring of the bit (10); the outer magnetic ring (15) is positioned at the lower end of the aligning hole (13).

4. The fastening device for the bolts with the circumferentially distributed groups according to claim 1, wherein the upper end of the main shaft (6) penetrates through the upper end cover (2) of the gear box and then is connected with the power source (8), and the main shaft (6) is provided with a first bearing (17) at the connection part with the upper end cover (2) and the lower end cover (3); the upper end cover (2) is provided with a base (18) which is used for concentrically fixing the power source on the outer ring of the main shaft (6), the base (18) fixes the power source (8), and the power shaft of the power source is connected with the main shaft in a matching way.

5. The fastening device for the bolts with the circumferentially distributed groups according to claim 4, wherein a square hole for connecting with a power shaft is formed in the center of the main shaft (6).

6. The fastening device for the bolts with the circumferentially distributed groups according to claim 1, wherein a second bearing (19) is arranged at the joint of the driven shaft (7) and the gear box (1), a driven shaft end cover (20) for sealing the top of the driven shaft is arranged on the upper end cover (2), and the driven shaft end cover (20) is connected with the driven shaft (7) through a driven shaft end cover screw (21).

7. The circumferentially distributed group bolt fastening device according to claim 1, wherein the upper end cover (2) and the lower end cover (3) of the gear box (1) are connected through an end cover screw (22), the upper end cover (2) is provided with a hanging ring (23), and the hanging rings (23) are uniformly distributed by taking the main shaft as a center.

8. A circumferentially distributed group bolt fastening device according to claim 1, wherein a handle (24) for assisting bolt fastening by pressing is provided on the side of the lower end cover (3), the handle (24) is symmetrically provided with respect to the gear box, and a switch (25) for operating the power source is provided on the handle (24).