Synchronous control multi-shaft tightening device

Abstract

The utility model discloses a synchronously-controlled multi-shaft tightening device, and relates to the technical field of mechanical disassembly and assembly. The bolt driving device comprises a gear transmission assembly, a first bolt driving assembly is arranged at the front end of the gear transmission assembly, the first bolt driving assembly comprises a first base, the first base is evenly and fixedly installed at the front end of the gear transmission assembly, and a first driving shaft is rotationally connected to the interior of the first base, penetrates through the first base and extends forwards. The first sleeve is connected to the front side of the first driving shaft in a sleeving mode, and the first spring is fixedly connected between the rear end of the first sleeve and the outer wall of the rear side of the first driving shaft. The multi-shaft screw-out and screw-up device can drive multiple shafts to rotate at the same time to achieve screw-out and screw-up of a bolt, the torque is kept uniform, the product quality is improved, the phenomena that due to misoperation, excessive screw-up is caused during disassembly, the bolt cannot be screwed in during assembly, and the bolt slips and falls off are avoided, stable disassembly and assembly are guaranteed, and the production efficiency is improved. And meanwhile, the wrench head can be aligned with the bolt for cap recognition, so that the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of mechanical disassembly and assembly technology, specifically to a multi-axis tightening device with synchronous control. Background Technology

[0002] In the field of machinery, bolts are often used for assembly and fixing. Therefore, when disassembling and assembling machinery, bolts need to be unscrewed and tightened. In some assembly scenarios, there are many bolts and they are evenly distributed. To improve work efficiency, a multi-axis drive method can be used to realize the synchronous unscrewing and tightening of multiple bolts.

[0003] For example, Chinese utility model patent CN223222818U discloses a bolt tightening device with adjustable four-axis spacing, which can realize the linkage adjustment of four tightening axes in the lateral and longitudinal directions, so as to adapt to the varied, complex and numerous bolt tightening operations on the axle, which helps to improve the efficiency of bolt tightening assembly and reduce equipment procurement and maintenance costs.

[0004] However, considering the aforementioned patents and existing technologies, the current multi-axis tightening devices still have the following shortcomings during use:

[0005] Existing multi-axis tightening devices use individual drives, making it difficult to uniformly control the tightening torque. This results in inconsistent bolt tightness, reducing product quality. Furthermore, when unscrewing and tightening bolts, different directions of drive rotation are required. However, existing multi-axis tightening devices lack limit devices, making it easy for misoperation to drive rotation in opposite directions. This can lead to over-tightening during disassembly and bolts not being able to be screwed in during assembly, causing stripping and falling off. Additionally, because of the multi-axis drive, it is not convenient to align and identify bolt caps, all of which reduce work efficiency. Utility Model Content

[0006] The purpose of this invention is to solve the problems mentioned above, such as the difficulty in uniformly controlling the tightening torque, resulting in inconsistent bolt tightening, reduced product quality, easy misoperation of reverse-direction drive rotation, over-tightening during disassembly, bolts not being able to be screwed in during assembly and stripping and falling off, and the inconvenience of bolt alignment and head recognition due to multi-axis drive, all of which reduce work efficiency. This invention provides a synchronously controlled multi-axis tightening device.

[0007] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0008] A synchronously controlled multi-axis tightening device includes a gear transmission assembly. A bolt drive assembly is located at the front end of the gear transmission assembly. The bolt drive assembly includes a base, which is uniformly and fixedly installed at the front end of the gear transmission assembly. A drive shaft is rotatably connected to the interior of the base and extends forward through it. A sleeve is fitted onto the front side of the drive shaft. A spring is fixedly connected between the rear end of the sleeve and the rear outer wall of the drive shaft. A ratchet is fixedly installed on the periphery of the area inside the base. Two ratchet blocks are symmetrically rotatably connected inside the base and located on both sides of the bottom of the ratchet. A spring is fixedly connected to the outer wall of the base between the ends of the ratchet blocks that are furthest from each other. A limiting rod is rotatably connected inside the base and located at the center between the left and right ratchet blocks. The limiting rod extends forward to the front side of the front end face of the base, and a lever is fixedly connected to the front end of the limiting rod.

[0009] Furthermore, the front side of the drive shaft one adopts a square head design, and the sleeve one is connected to the front side of the drive shaft one by the square head of the drive shaft one. The sleeve one is then connected to the front side of the drive shaft one by limiting the sliding connection.

[0010] Furthermore, the sleeve has symmetrical waist holes on both sides of the middle section, and a positioning pin is fixedly inserted into the front side of the drive shaft. Both sides of the positioning pin extend outward into the interior of the waist hole.

[0011] Furthermore, the top of the limiting rod is designed with a protrusion, which can disengage the ratchet blocks on the left and right sides from the ratchet wheel during the left and right swinging of the limiting rod.

[0012] Furthermore, depending on the application scenario, the bolt drive assembly one at the front end of the gear transmission assembly can be switched to bolt drive assembly two. Bolt drive assembly two includes a base two, which is uniformly and fixedly installed at the front end of the gear transmission assembly. The mounting sleeve is fixedly connected to the center of the front end of the base two. The drive shaft two is rotatably connected to the inside of the base two and the mounting sleeve through a bearing. The ratchet sleeve is fitted onto the outer side of the front side of the drive shaft two. The spring three is fixedly connected between the rear end of the ratchet sleeve one and the rear outer wall of the drive shaft two. The transmission shaft is rotatably connected to the inside of the front side of the mounting sleeve through a bearing. The ratchet sleeve two is fixedly connected to the rear end of the transmission shaft. The transmission shaft extends forward to the front side of the front end of the mounting sleeve. The sleeve two is fitted onto the front side of the transmission shaft. The spring four is fixedly connected between the rear end of the sleeve two and the rear outer wall of the transmission shaft.

[0013] Furthermore, the front side of the second drive shaft adopts a square head design. By connecting the square head on the front side of the second drive shaft with the first ratchet cylinder, the ratchet cylinder can achieve a front-to-back limiting sliding connection on the front side of the second drive shaft.

[0014] Furthermore, the first and second ratchet cylinders are aligned front to back, and the adjacent ends of the first and second ratchet cylinders are provided with staggered ratchet teeth.

[0015] Furthermore, the gear transmission assembly includes a housing and a drive shaft. The drive shaft is rotatably connected to the center of the housing via bearings, and extends rearward to the rear side of the housing. The rear side of the drive shaft is used for transmission connection with an electric wrench. The central gear is fixedly installed on the periphery of the drive shaft located inside the housing. The driven shaft is rotatably connected to the inside of the housing via bearings, and the driven shafts are evenly distributed on the outside of the drive shaft. The planetary gears are fixedly installed on the periphery of the driven shaft located inside the housing, and all planetary gears mesh with the central gear.

[0016] Furthermore, the driven shaft extends forward to the front side of the front end of the housing, and the driven shaft is connected to drive shaft one or drive shaft two via a front square head plug.

[0017] Furthermore, fixed rings are symmetrically fixedly installed on the front and rear sides of the outer side of the box, and a connecting ring is rotatably connected to the center of the outer side of the box through the fixed rings. The inner wall of the connecting ring is embedded with a wear-resistant ring, and a lifting ring is fixedly installed at the top of the connecting ring. The lifting ring is used to connect with the auxiliary robotic arm.

[0018] The beneficial effects of this utility model are as follows:

[0019] 1. This utility model, through the design of the gear transmission assembly, utilizes the meshing of the central gear and the outer planetary gears to simultaneously drive the driven shaft to rotate in the same direction, thereby achieving the unscrewing and tightening of bolts. This ensures uniform torque and improves product quality. Furthermore, the design of the ratchet in the bolt drive assembly and the ratchet blocks on its left and right sides below it allows for control of the rotation direction of the drive wrench head via the rotation limit rod. This prevents the wrench head from rotating in the opposite direction due to misoperation, thus avoiding over-tightening during disassembly and preventing the bolt from slipping and falling off during assembly. This ensures stable disassembly and assembly. At the same time, the elastic telescopic design of the sleeve also facilitates the alignment of the sleeved wrench head with the bolt cap, thereby improving work efficiency.

[0020] 2. This utility model, through the design of ratchet sleeve one and ratchet sleeve two between the drive shaft two and the transmission shaft in the bolt drive assembly two, when the wrench head is engaged with the bolt, while ensuring that the sleeve two stops rotating after the bolt has completed the capping, can drive the uncapped sleeve two to rotate to achieve automatic capping, and after all capping is completed, synchronous drive rotation is performed, thereby enabling the wrench head to better engage with the bolt to complete the capping operation, thus improving the bolt disassembly and assembly efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of this utility model. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure of this utility model. Figure 2 ;

[0023] Figure 3 This is a three-dimensional structural diagram of a portion of the gear transmission assembly and the bolt drive assembly of this utility model;

[0024] Figure 4 This is a three-dimensional structural diagram of the bolt drive assembly of this utility model;

[0025] Figure 5 This is a partial cross-sectional perspective view of the three-dimensional structure of the bolt drive assembly of this utility model. Figure 1 ;

[0026] Figure 6 This is an exploded three-dimensional view of the driven shaft and bolt drive assembly of this utility model;

[0027] Figure 7 This is an exploded three-dimensional view of the bolt drive assembly of this utility model;

[0028] Figure 8 This is a partial cross-sectional perspective view of the three-dimensional structure of the bolt drive assembly of this utility model. Figure 2 ;

[0029] Figure 9 This is a three-dimensional structural diagram of the bolt drive assembly of this utility model;

[0030] Figure 10 This is a partial three-dimensional structural diagram of the bolt drive assembly of this utility model;

[0031] Figure 11 This is a partial exploded three-dimensional view of the bolt drive assembly of this utility model;

[0032] Figure 12 This is an exploded view of the three-dimensional structure of the drive shaft 2 and ratchet cylinder 1 of this utility model.

[0033] Reference numerals in the attached drawings: 1. Gear transmission assembly; 101. Housing; 102. Drive shaft; 103. Central gear; 104. Driven shaft; 105. Planetary gear; 2. Bolt drive assembly one; 201. Base one; 202. Drive shaft one; 2021. Locating pin; 203. Sleeve one; 2031. Waist hole; 204. Spring one; 205. Ratchet; 206. Ratchet block; 2061. Spring two; 207. Limiting rod; 3. Bolt drive assembly two; 301. Base two; 302. Mounting cylinder; 303. Drive shaft two; 304. Ratchet cylinder one; 305. Spring three; 306. Drive shaft; 307. Ratchet cylinder two; 308. Sleeve two; 309. Spring four; 4. Fixing ring; 5. Connecting ring; 6. Lifting ring. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0035] A preferred embodiment of the present invention, a synchronously controlled multi-axis tightening device, will be described in detail below:

[0036] Example 1

[0037] like Figures 1-2 , Figures 4-8 As shown, a synchronously controlled multi-axis tightening device includes a gear transmission assembly 1. A bolt drive assembly 2 is located at the front end of the gear transmission assembly 1. The bolt drive assembly 2 includes a base 201, which is uniformly and fixedly installed at the front end of the gear transmission assembly 1. A drive shaft 202 is rotatably connected to the interior of the base 201 and extends forward through the base 201. A sleeve 203 is fitted onto the front side of the drive shaft 202. A spring 204 is fixedly connected between the rear end of the sleeve 203 and the rear outer wall of the drive shaft 202. A ratchet 205 is fixedly installed on the outer side of the drive shaft 202 located within the interior region of the base 201. The base has two ratchet blocks 206, which are symmetrically connected and rotate left and right inside the base 201. They are located on both sides of the bottom of the ratchet 205. The ends of the ratchet blocks 206 that are far apart from each other are fixedly connected to the inner wall of the base 201 with springs 2061. The limiting rod 207 is rotatably connected inside the base 201 and is located in the center between the left and right ratchet blocks 206. The limiting rod 207 extends forward to the front side of the front end face of the base 201, and a lever is fixedly connected to the front end of the limiting rod 207, so that the limiting rod 207 can be rotated by the lever on the front side of the base 201.

[0038] like Figures 5-7As shown, the front side of the drive shaft 202 adopts a square head design. The sleeve 203 is connected to the square head of the drive shaft 202, achieving a front-to-back sliding connection between the sleeve and the drive shaft 202. Therefore, while the drive shaft 202 can drive the sleeve 203 to rotate, the sleeve 203 can also move back and forth on the front side of the drive shaft 202.

[0039] like Figures 6-7 As shown, symmetrical waist holes 2031 are provided on both sides of the middle of the sleeve 203. A positioning pin 2021 is fixedly inserted into the front side of the drive shaft 202, and both sides of the positioning pin 2021 extend outward into the interior of the waist hole 2031. By cooperating with the waist hole 2031, the stability of the limiting sliding connection between the drive shaft 202 and the sleeve 203 is improved, and the forward and backward movement distance of the sleeve 203 is also limited.

[0040] like Figure 8 As shown, the top of the limiting rod 207 has a raised design, which allows the ratchet blocks 206 on the left and right sides to disengage from the ratchet wheel 205 during the left and right swinging of the limiting rod 207. Therefore, by rotating the limiting rod 207, one of the ratchet blocks 206 on the left and right sides can be selectively engaged with the ratchet wheel 205, thereby limiting the drive shaft 202 in one direction in different directions.

[0041] like Figures 2-3 As shown, the gear transmission assembly 1 includes a housing 101 and a drive shaft 102. The drive shaft 102 is rotatably connected to the center of the housing 101 via bearings, and extends rearward to the rear side of the rear end of the housing 101. The rear side of the drive shaft 102 is used for transmission connection with an electric wrench. A central gear 103 is fixedly installed on the outer periphery of the area inside the housing 101 of the drive shaft 102. A driven shaft 104 is rotatably connected to the inside of the housing 101 via bearings, and the driven shafts 104 are evenly distributed on the outer periphery of the drive shaft 102. Planetary gears 105 are fixedly installed on the outer periphery of the area inside the housing 101 of the driven shafts 104, and all planetary gears 105 mesh with the central gear 103. Therefore, when the central gear 103 rotates, it can simultaneously drive the outer planetary gears 105 to rotate in the same direction, and drive the driven shafts 104 to rotate in the same direction.

[0042] like Figures 5-6 As shown, the driven shaft 104 extends forward to the front side of the front end of the housing 101, and the driven shaft 104 is connected to the drive shaft 202 via a front square head plug. Therefore, when the planetary gear 105 drives the driven shaft 104 to rotate in the same direction, it can drive the front drive shaft 202 to rotate in the same direction.

[0043] like Figures 1-2As shown, fixing rings 4 are symmetrically fixed on the front and rear sides of the outer side of the housing 101. A connecting ring 5 is rotatably connected to the center of the outer side of the housing 101 via the fixing rings 4. The inner wall of the connecting ring 5 is embedded with a wear-resistant ring. A lifting ring 6 is fixedly installed at the top of the connecting ring 5, which is used to connect with the auxiliary robotic arm. The connection between the lifting ring 6 and the auxiliary robotic arm can provide auxiliary support for the multi-axis tightening device, making the multi-axis tightening device more labor-saving during use. By utilizing the limiting rotational connection between the fixing rings 4 and the connecting ring 5 at the center of the outer side of the housing 101, the position of the housing 101 can be rotated and adjusted, thereby achieving better alignment.

[0044] In this embodiment, during use, the multi-axis tightening device is moved to the mechanical installation or disassembly location by the action of the auxiliary robotic arm. Then, according to the type of bolt, the wrench head is fitted onto the front side of the sleeve 203 and aligned with the bolt.

[0045] By utilizing the elastic telescopic design of the sleeve 203 and the spring 204, when aligning multiple sets of bolts, the misaligned wrench head and sleeve 203 can elastically retract and complete the alignment during rotation. After alignment, the wrench head will pop out again to engage with the bolt, which facilitates the identification of bolt caps for multiple sets of bolts.

[0046] After the socket 203 is engaged with the bolt, the electric wrench drives the drive shaft 102 to rotate, which in turn drives the center gear 103 to rotate. During the rotation of the center gear 103, the planetary gears 105 mesh with each other outside the center gear 103, which simultaneously drive the planetary gears 105 to rotate in the same direction, which in turn drives the driven shaft 104 to rotate in the same direction, which in turn drives the drive shaft 202 to rotate in the same direction. This causes the drive shaft 202 to drive the socket 203 and the wrench head to rotate. Therefore, the electric wrench can rotate in different directions to unscrew and tighten the bolt.

[0047] By using the design of ratchet blocks 206 on the left and right sides below the ratchet 205 on the periphery of the drive shaft 202, and with the action of the spring 2061, the rotation of the limiting rod 207 can selectively engage one of the ratchet blocks 206 on the left and right sides with the ratchet 205. When one of the ratchet blocks 206 is engaged with the ratchet 205, the drive shaft 202 can only rotate in one direction, thus limiting the drive shaft 202 in different directions. Therefore, when unscrewing or tightening the bolt, the rotation direction of the drive sleeve 203 and the wrench head can be controlled, avoiding the wrench head from rotating in the opposite direction due to misoperation. This prevents over-tightening during disassembly and avoids the bolt from being unable to be screwed in during assembly, resulting in stripped threads and falling off.

[0048] Example 2

[0049] Furthermore, such as Figures 9-12 As shown, depending on the application scenario, the bolt drive assembly 1 at the front end of the gear transmission assembly 1 can be switched to bolt drive assembly 2 at the front end of the gear transmission assembly 1. Bolt drive assembly 2 at the front end of the gear transmission assembly 1 includes a base 2 301, which is uniformly fixedly installed at the front end of the gear transmission assembly 1. The mounting cylinder 302 is fixedly connected to the center of the front end of the base 2 301. The drive shaft 2 303 is rotatably connected to the inside of the base 2 301 and the mounting cylinder 302 through a bearing. The ratchet cylinder 1 304 is sleeved on the outer side of the front side of the drive shaft 2 303. The spring 3 305 is fixedly connected between the rear end of the ratchet cylinder 1 304 and the rear outer wall of the drive shaft 2 303. The transmission shaft 306 is rotatably connected to the inside of the front side of the mounting cylinder 302 through a bearing. The ratchet cylinder 2 307 is fixedly connected to the rear end of the transmission shaft 306. The transmission shaft 306 extends forward to the front side of the front end of the mounting cylinder 302. The sleeve 2 308 is sleeved on the front side of the transmission shaft 306. The spring 4 309 is fixedly connected between the rear end of the sleeve 2 308 and the rear outer wall of the transmission shaft 306.

[0050] like Figure 12 As shown, the front side of drive shaft 2 303 adopts a square head design. The square head of drive shaft 2 303 engages with ratchet cylinder 1 304 to achieve a front-to-back sliding connection of ratchet cylinder 1 304 on the front side of drive shaft 2 303. Therefore, while drive shaft 2 303 can drive ratchet cylinder 1 304 to rotate, ratchet cylinder 1 304 can also move back and forth on the front side of drive shaft 2 303.

[0051] like Figures 10-11 As shown, ratchet cylinder 1 304 and ratchet cylinder 2 307 are aligned front to back, and staggered ratchet teeth are provided at adjacent ends of ratchet cylinder 1 304 and ratchet cylinder 2 307. When the ratchet teeth at adjacent ends of ratchet cylinder 1 304 and ratchet cylinder 2 307 are engaged, ratchet cylinder 1 304 can drive ratchet cylinder 2 307 to rotate in one direction.

[0052] In this assembly, the driven shaft 104 in the gear transmission assembly 1 is connected to the drive shaft 303 via a front square head connector. This enables the gear transmission assembly 1 to drive the drive shaft 303 to rotate synchronously.

[0053] In this embodiment, it is mainly applied to the unscrewing and disassembly of bolts. When the wrench head on the front side of the second sleeve 308 is engaged with the bolt, before the stable engagement, the second sleeve 308 does not push the drive shaft 306 and the second ratchet sleeve 307 to press against the first ratchet sleeve 304. At this time, when the second sleeve 308 completes the engagement with the bolt cap, the elastic extension and contraction of the first ratchet sleeve 304 will not cause the drive shaft 306 and the second sleeve 308 to rotate. However, the second sleeve 308, which is not engaged with the bolt cap, will drive the second ratchet sleeve 307 to rotate through friction when the first ratchet sleeve 304 rotates, thereby driving the drive shaft 306 and the second sleeve 308 to rotate. This achieves the engagement of the uncapped second sleeve 308, allowing the wrench head on the front side of the second sleeve 308 to better engage with the bolt, improve the cap engagement operation, and increase the disassembly efficiency.

[0054] After the wrench head and bolt are engaged, the ratchet cylinder 2 307 is pressed backward against the ratchet cylinder 1 304 by the pressure near the bolt. This causes the ratchet cylinder 1 304 to compress the spring 305 backward, achieving a stable pressing engagement between the ratchet cylinder 1 304 and the ratchet cylinder 2 307. As the drive shaft 2 303 rotates synchronously, the engagement between the ratchet cylinder 1 304 and the ratchet cylinder 2 307 can also drive the drive shaft 306 and the sleeve 2 308 to rotate in one direction, thereby driving the wrench head to rotate in one direction to unscrew the bolt.

[0055] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A synchronously controlled multi-spindle screwing device comprising a gear transmission assembly (1), characterized in that, The front end of the gear transmission assembly (1) is provided with a bolt driving assembly one (2), the bolt driving assembly one (2) comprises: The base one (201) is uniformly fixedly installed at the front end of the gear transmission assembly (1); The driving shaft one (202) is rotatably connected to the inside of the base one (201) and extends forwardly through the base one (201); The sleeve one (203) is sleeved on the front side of the driving shaft one (202); The spring one (204) is fixedly connected between the rear end of the sleeve one (203) and the rear side outer wall of the driving shaft one (202); The ratchet wheel (205) is fixedly installed on the periphery of the driving shaft one (202) in the inside area of the base one (201); The ratchet blocks (206) are two in number, the two ratchet blocks (206) are rotatably connected in the inside of the base one (201) and are located on the two sides of the bottom of the ratchet wheel (205), and the ends of the ratchet blocks (206) away from each other are fixedly connected with the springs two (2061) between the inner walls of the base one (201); The limiting rod (207) is rotatably connected in the inside of the base one (201), and the limiting rod (207) is located at the central position between the left and right ratchet blocks (206), the limiting rod (207) extends forwardly to the front side of the front end surface of the base one (201), and the front end of the limiting rod (207) is fixedly connected with the push rod.

2. The synchronously controlled multi-spindle screwing device according to claim 1, characterized in that The front side of the driving shaft one (202) is designed as a square head, the sleeve one (203) is sleeved on the square head of the front side of the driving shaft one (202), and the front and rear limiting sliding connection of the sleeve one (203) on the front side of the driving shaft one (202) is realized.

3. The synchronously controlled multi-spindle screwing device according to claim 1, characterized in that, The waist holes (2031) are symmetrically formed in the middle of the sleeve one (203), the positioning pins (2021) are fixedly inserted on the front side of the driving shaft one (202), and the positioning pins (2021) extend outwardly to the inside of the waist holes (2031) on the two sides.

4. The synchronously controlled multi-spindle screwing device according to claim 1, characterized in that The top of the limiting rod (207) is designed as a protrusion, and in the process of swinging left and right, the left and right ratchet blocks (206) can be respectively separated from the ratchet wheel (205).

5. The synchronously controlled multi-spindle screwing device according to claim 1, characterized in that, The bolt driving assembly one (2) at the front end of the gear transmission assembly (1) can be switched to the bolt driving assembly two (3), the bolt driving assembly two (3) comprises: The base two (301) is uniformly fixedly installed at the front end of the gear transmission assembly (1); The mounting cylinder (302) is fixedly connected at the central position of the front end of the base two (301); The driving shaft two (303) is rotatably connected in the inside of the base two (301) and the mounting cylinder (302) through a bearing; The ratchet cylinder one (304) is sleeved on the outside of the front side of the driving shaft two (303); Spring three (305), the spring three (305) is fixedly connected between the rear end of the ratchet cylinder one (304) and the outer wall of the rear side of the driving shaft two (303); Transmission shaft (306), the transmission shaft (306) is rotatably connected to the inside of the front side of the mounting cylinder (302) through a bearing; Ratchet cylinder two (307), the ratchet cylinder two (307) is fixedly connected to the rear end of the transmission shaft (306); Sleeve two (308), the transmission shaft (306) extends forward to the front side of the front end of the mounting cylinder (302), and the sleeve two (308) is sleeved on the front side of the transmission shaft (306); Spring four (309), the spring four (309) is fixedly connected between the rear end of the sleeve two (308) and the outer wall of the rear side of the transmission shaft (306).

6. The synchronously controlled multi-spindle screwing device according to claim 5, characterized in that The front side of the driving shaft two (303) adopts a square head design, and the ratchet cylinder one (304) is connected in front and back limiting sliding mode on the front side of the driving shaft two (303) through the sleeve of the square head on the front side of the driving shaft two (303) and the ratchet cylinder one (304).

7. The synchronously controlled multi-spindle screwing device according to claim 5, characterized in that, The ratchet cylinder one (304) and the ratchet cylinder two (307) are aligned front and back, and the adjacent end of the ratchet cylinder one (304) and the ratchet cylinder two (307) is provided with a staggered ratchet.

8. The synchronously controlled multi-spindle screwing device according to claim 5, characterized in that, The gear transmission assembly (1) comprises: Box (101), driving shaft (102), the driving shaft (102) is rotatably connected to the central part inside the box (101) through a bearing, and the driving shaft (102) extends rearward to the rear side of the rear end of the box (101), and the rear side of the driving shaft (102) is used for transmission connection with the electric wrench; Center gear (103), the center gear (103) is fixedly installed on the periphery of the driving shaft (102) in the inside region of the box (101); Driven shaft (104), the driven shaft (104) is rotatably connected to the inside of the box (101) through a bearing, and the driven shaft (104) is evenly distributed on the outside of the driving shaft (102); Planetary gear (105), the planetary gear (105) is fixedly installed on the periphery of the driven shaft (104) in the inside region of the box (101), and the planetary gear (105) is engaged with the center gear (103).

9. The synchronously controlled multi-spindle screwing device according to claim 8, characterized in that The driven shaft (104) extends forward to the front side of the front end of the box (101), and the driven shaft (104) is transmission connected with the driving shaft one (202) or the driving shaft two (303) through the front side square head plug-in mode.

10. Synchronized controlled multi-spindle screwing apparatus according to claim 8 or 9, characterized in that, The front and back sides of the outside of the box (101) are symmetrically fixedly installed with a fixed ring (4), the central part of the outside of the box (101) is rotatably connected with a connecting ring (5) through the fixed ring (4), the inner wall of the connecting ring (5) is embedded with a wear-resistant ring, the top end of the connecting ring (5) is fixedly installed with a lifting ring (6), and the lifting ring (6) is used for connecting with an auxiliary mechanical arm.

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