Front wheel mechanism of chain correction machine

Abstract

According to the technical scheme, the positive wheel mechanism of the chain correcting machine is characterized in that the positive wheel mechanism comprises a main body, four supporting legs are fixedly installed at the bottom of the main body, a U-shaped installation frame is fixedly installed at the top of the main body, two limiting holes are formed in the top of the U-shaped installation frame, and a threaded hole is formed in the top of the main body; the correcting assembly is arranged in the U-shaped mounting frame and used for correcting the chain, arranging the main body and bearing and supporting other parts, the supporting legs play a role in supporting the main body, the U-shaped mounting frame provides mounting space and supporting for the correcting assembly, and the limiting holes are matched with the limiting columns to limit the movement range of the correcting assembly. The threaded hole generates counter-acting force on the threaded column, rotary motion is converted into axial pressure in the thread direction, the axial pressure is applied to the chain, effective correction of the chain is achieved, the correction assembly converts power and pressure provided by the outside into correction force for the chain, and the chain reaches the specified precision and quality standard.

Description

TECHNICAL FIELD

[0001] The utility model relates to chain correction technical field, concretely relates to a chain correction machine positive gear mechanism. BACKGROUND

[0002] With the rapid development of modern industry, various mechanical equipment on the dependence of chain is increasing, and the quality and performance of chain put forward more stringent requirements, in precision machinery, automation production line, logistics conveying system etc.

[0003] According to the patent with the announcement number CN202398782U, a hoisting chain correction machine overcomes the defects of insufficient correction force of pure cam mechanism, and cannot meet the correction force requirement of chain with line diameter more than 12mm, comprising a bed frame and chain correction components and chain walking components arranged on the bed frame, the chain correction components include left and right drag clamping mechanisms, the right drag clamping mechanism is hinged with a swing arm, and the swing arm is connected with a cam mechanism; the left and right drag clamping mechanisms are provided with chain clamping mechanisms, the chain clamping mechanism includes a drive cylinder, a clamping cam connected with the drive cylinder and a clamp assembly matched with the clamping cam; the chain walking components include a chain walking plate, a chain walking mechanism and a chain walking rocker arm mechanism, the cam mechanism provides the action signal of the drive cylinder of the chain clamping mechanism, matches the rotation track of the cam with the clamping action of the drive cylinder, provides larger correction force, and can correct the chain with line diameter more than 12mm.

[0004] In the above scheme, the chain correction machine uses a stretching correction method, mainly applies tension to the whole chain, and improves the shape of the chain through overall stretching, however, in actual use, the chain often deforms, twists or has uneven pitch, and the overall stretching method is difficult to accurately correct these local problems, and it is difficult to meet the correction requirements of high-precision chains, if the stretching force is too large, the chain may be stretched too much, the chain pitch is lengthened, and the normal use of the chain is affected, and if the stretching force is insufficient, the deformation of the chain cannot be effectively corrected. UTILITY MODEL CONTENTS

[0005] In view of the defects of the prior art, the utility model provides a chain correction machine positive gear mechanism, which solves the problems mentioned in the background art.

[0006] The above technical purpose of the utility model is realized through the following technical scheme:

[0007] The application discloses a chain correction machine positive gear mechanism, which comprises a main body, four supporting legs fixedly arranged at the bottom of the main body, a U-shaped mounting frame fixedly arranged at the top of the main body, two limiting holes formed in the top of the U-shaped mounting frame, and a threaded hole formed in the top of the main body; and a correction assembly arranged in the U-shaped mounting frame and used for correcting the chain.

[0008] By adopting the technical scheme, the main body is arranged as a basic carrier of the whole chain correction machine positive gear mechanism, and bears and supports other components; the supporting legs support the main body; the U-shaped mounting frame provides mounting space and support for the correction assembly; the limiting holes are matched with limiting columns in the correction assembly to limit the movement range of the correction assembly; the threaded hole generates a reaction force on the threaded column, so that the rotational movement is converted into axial pressure in the threaded direction, which is transmitted to the correction wheel through the mounting plate and other components and finally applied to the chain to effectively correct the chain; and the correction assembly converts the power and pressure provided from outside into correction force on the chain through the cooperative work of the components in the correction assembly, so that the chain reaches the specified accuracy and quality standard.

[0009] Preferably, the correction assembly comprises a mounting plate movably sleeved in the U-shaped mounting frame, a first installation groove formed in the top of the mounting plate, a first motor fixedly arranged in the first installation groove, a threaded column fixedly arranged at one end of a rotating shaft of the first motor, the threaded column being threadedly connected with the threaded hole, two limiting columns fixedly arranged at the top of the mounting plate and movably sleeved with the limiting holes, and limiting discs fixedly arranged at the top of the two limiting columns.

[0010] By adopting the technical scheme, the mounting plate is arranged to provide a stable mounting platform for the first motor, the limiting columns and other components; the first installation groove is used for mounting the first motor; the first motor drives the threaded column to rotate through the rotation of the rotating shaft; in the chain correction process, the power output by the first motor is converted into axial pressure through the threaded column, thereby providing necessary pressure support for the chain correction; the threaded column generates axial thrust through cooperation with the threaded hole; the thrust is transmitted to the correction wheel and other components through the mounting plate and finally applied to the chain, thereby becoming effective pressure for correcting the chain; the limiting columns limit the movement direction of the mounting plate and the correction assembly; and the limiting discs prevent the limiting columns from being pulled out of the limiting holes of the U-shaped mounting frame, thereby ensuring the stability of the assembly.

[0011] Preferably, the correction assembly further comprises two link plates fixedly arranged at the bottom of the mounting plate, installation holes formed in one side of the two link plates, second motors fixedly arranged in the two installation holes respectively, a correction wheel fixedly arranged between the two second motors, and a first groove formed in the outer circular wall of the correction wheel.

[0012] By adopting the technical scheme, the connecting plate is arranged as a connecting and supporting structure, the correction wheel and the second motor are stably connected with the mounting plate, the mounting hole is used for mounting the second motor, the second motor provides continuous and stable rotating power for the correction wheel, the correction wheel is driven to rotate at high speed through the rotating of the second motor, when the chain is corrected, the rotating correction wheel fully contacts with the surface of the chain to apply friction force and extrusion force to the chain, thereby realizing the correction operation of the chain, the first groove is matched with the shape of the chain, can be closely attached with the chain during work, increases the contact area and friction force between the correction wheel and the chain, makes the correction force applied by the correction wheel to the chain more uniform and effective, thereby improving the effect and precision of the chain correction.

[0013] Preferably, a rectangular hole is formed in the top of the main body, second mounting grooves are formed in the inner sides of the rectangular hole, bearings are fixedly installed in the inner sides of the second mounting grooves, an auxiliary wheel is movably sleeved in the rectangular hole, connecting columns are fixedly installed on the outer circumferential wall of the auxiliary wheel, and second grooves are formed in the outer circumferential wall of the auxiliary wheel.

[0014] By adopting the technical scheme, the rectangular hole is arranged to provide installation space for the auxiliary wheel, the second mounting grooves are used for mounting the bearings, the bearings reduce the friction force when the auxiliary wheel rotates, the auxiliary wheel can rotate flexibly and smoothly, the auxiliary wheel cooperates with the correction wheel to support and constrain the chain from the other side, helps the correction wheel to better apply pressure to the chain, the chain can keep a stable state when being corrected, the precision and effect of the correction are improved, the connecting columns make the connection between the auxiliary wheel and the bearings firm and reliable during the rotation of the auxiliary wheel, and the stability and reliability of the auxiliary wheel during the work are ensured, and the second grooves can be closely attached with the chain, increase the contact area and friction force between the auxiliary wheel and the chain, and make the support and constraint of the auxiliary wheel to the chain more effective, thereby better assisting the correction wheel to correct the chain.

[0015] Preferably, two first supporting blocks are fixedly installed on the top of the main body, right chain walking supporting plates are fixedly installed on the top of the first supporting blocks, two second supporting blocks are fixedly installed on the top of the main body, and left chain walking supporting plates are fixedly installed on the top of the second supporting blocks.

[0016] By adopting the technical scheme, the first supporting blocks are arranged to provide stable and reliable support for the right chain walking supporting plates, when the chain passes through the correction assembly to complete the correction, the right chain walking supporting plates provide a specific moving path and a support platform for the chain, the second supporting blocks provide powerful support for the left chain walking supporting plates, and the left chain walking supporting plates smoothly move the chain to the grooves of the auxiliary wheel, and prepare for the subsequent correction work.

[0017] Preferably, one side of the main body is fixedly provided with a connecting plate, one side of the connecting plate is provided with a third mounting groove, and the third mounting groove is fixedly provided with a third motor.

[0018] By adopting the above technical scheme, the connecting plate is arranged to provide a reliable mounting position for the third motor, the third mounting groove is arranged to mount the third motor, and the third motor drives the rotating shaft to rotate through its own rotating movement, thereby driving the chain running gear to rotate.

[0019] In summary, the utility model mainly has the following beneficial effects:

[0020] The main body is arranged to bear and support other components, the supporting legs support the main body, the U-shaped mounting frame provides installation space and support for the correction assembly, the limiting hole limits the movement range of the correction assembly, the threaded hole generates a reaction force on the threaded column, thereby converting the rotating movement into axial pressure in the threaded direction and applying it to the chain, the correction assembly converts the power and pressure provided from the outside into a correction force on the chain, the mounting plate is arranged to provide a stable installation platform for the first motor, the limiting column and other components, the first motor drives the threaded column to rotate through the rotation of its rotating shaft, and the power output by the first motor is converted into axial pressure by the threaded column to provide necessary pressure support for chain correction, the threaded column generates a thrust force in the axial direction, which is applied to the chain as an effective pressure for correcting the chain, the limiting column limits the movement direction of the mounting plate and the correction assembly, the limiting disc prevents the limiting column from being pulled out of the limiting hole of the U-shaped mounting frame, the connecting plate stably connects the correction wheel and the second motor to the mounting plate, the mounting hole is arranged to mount the second motor, and the second motor drives the correction wheel to rotate when correcting the chain, fully contacts the surface of the chain, and applies friction and extrusion force to the chain to correct the chain, thereby realizing the correction operation of the chain, the first groove is adapted to the shape of the chain and can be tightly attached to the chain during work, thereby increasing the contact area and friction between the correction wheel and the chain, making the correction force applied by the correction wheel to the chain more uniform and effective, and thereby improving the effect and precision of chain correction.

[0021] The rectangular hole is arranged, a mounting space is provided for the auxiliary wheel, the second mounting groove is used for mounting the bearing, the bearing reduces friction when the auxiliary wheel rotates, the auxiliary wheel cooperates with the correction wheel to help the correction wheel to better apply pressure to the chain, the connecting column makes the connection between the auxiliary wheel and the bearing firm and reliable during rotation, the second groove can be closely attached to the chain, so that the support and constraint of the auxiliary wheel on the chain are more effective, the first supporting block is arranged to provide stable and reliable support for the right chain moving plate, the right chain moving plate provides a specific moving path and a support platform for the chain after the chain passes through the correction assembly and is corrected, the second supporting block provides powerful support for the left chain moving plate, the left chain moving plate smoothly moves the chain to the groove of the auxiliary wheel, the connecting plate is arranged to provide a reliable mounting position for the third motor, the third mounting groove is used for mounting the third motor, the third motor drives the rotating shaft to rotate through its own rotating movement, and then drives the chain moving gear to rotate, the chain moving gear is meshed with the chain, can ensure good meshing between the chain moving gear and the chain, provides stable driving force, makes the chain keep stable during movement, avoids slipping or jamming phenomenon, and realizes continuous and accurate conveying of the chain, and provides necessary power support for the correction process of the chain. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic view of the three-dimensional structure of the utility model;

[0023] Figure 2 is a schematic view of the U-shaped mounting rack structure of the utility model;

[0024] Figure 3 is a schematic view of the auxiliary wheel structure of the utility model;

[0025] Figure 4 is a schematic view of the connecting plate structure of the utility model;

[0026] Figure 5 is a schematic view of the mounting plate structure of the utility model;

[0027] Figure 6 is a schematic view of the link plate structure of the utility model.

[0028] The drawings show that: 1, main body; 2, support leg; 3, U-shaped mounting rack; 4, limiting hole; 5, threaded hole; 6, mounting plate; 7, first mounting groove; 8, first motor; 9, threaded column; 10, limiting column; 11, limiting disc; 12, link plate; 13, mounting hole; 14, second motor; 15, correction wheel; 16, first groove; 17, rectangular hole; 18, second mounting groove; 19, bearing; 20, auxiliary wheel; 21, connecting column; 22, second groove; 23, first supporting block; 24, right chain moving plate; 25, second supporting block; 26, left chain moving plate; 27, connecting plate; 28, third mounting groove; 29, third motor; 30, chain moving gear. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0030] refer to Figure 1 , Figure 2 , Figure 5 and Figure 6A chain correction machine positive gear mechanism, including: the main body 1, four support legs 2 are fixedly installed at the bottom of the main body 1, the U-shaped mounting bracket 3 is fixedly installed at the top of the main body 1, two limiting holes 4 are opened at the top of the U-shaped mounting bracket 3, and the threaded hole 5 is opened at the top of the main body 1;Correction assembly, the correction assembly is arranged in the inside of the U-shaped mounting bracket 3, for correcting chain, setting the main body 1 as the basic carrier of the whole chain correction machine positive gear mechanism, bearing and supporting other components, the support leg 2 plays the role of supporting the main body 1, the U-shaped mounting bracket 3 provides mounting space and support for the correction assembly, the limiting hole 4 is matched with the limiting column 10 in the correction assembly, the movement range of the correction assembly is limited, the threaded hole 5 generates a counterforce to the threaded column 9, so that the rotary motion is converted into axial pressure in the threaded direction, is transmitted to the correction wheel 15 through the installation plate 6 and other components, is finally applied to the chain, realizes the effective correction to the chain, the correction assembly converts the power and pressure provided by the outside into the correction force to the chain through the cooperative work of the inside components, so that the chain reaches the specified accuracy and quality standard, the correction assembly includes: the installation plate 6, the inside of the U-shaped mounting bracket 3 movably sheaths the installation plate 6, the first installation groove 7 is opened at the top of the installation plate 6, the first motor 8 is fixedly installed in the inside of the first installation groove 7, the threaded column 9 is fixedly installed at one end of the rotating shaft of the first motor 8, the threaded column 9 is screw-connected with the threaded hole 5, two limiting columns 10 are fixedly installed at the top of the installation plate 6, the limiting column 10 is movably sheathed with the limiting hole 4, two limiting discs 11 are respectively fixedly installed at the top of the two limiting columns 10, the installation plate 6 is provided, which provides a stable mounting platform for the first motor 8, the limiting column 10 and other components, the first installation groove 7 is used for installing the first motor 8, the first motor 8 drives the threaded column 9 to rotate through the rotation of the rotating shaft, and the power output in the chain correction process is converted into axial pressure through the threaded column 9, so as to provide necessary pressure support for chain correction, the threaded column 9 is matched with the threaded hole 5, the threaded column 9 generates axial thrust, the thrust is transmitted to the correction wheel 15 and other components through the installation plate 6, is finally applied to the chain, and becomes effective pressure for correcting the chain, the limiting column 10 limits the movement direction of the installation plate 6 and the correction assembly, the limiting disc 11 prevents the limiting column 10 from being separated from the limiting hole 4 of the U-shaped mounting bracket 3, and the stability of the assembly is ensured, the correction assembly further includes: two link plates 12, the bottom of the installation plate 6 is fixedly installed with the two link plates 12, two mounting holes 13 are respectively formed in one side of the two link plates 12, two second motors 14 are respectively fixedly installed in the inside of the mounting holes 13, the correction wheel 15 is fixedly installed between the two second motors 14, the first recess 16 is formed on the outer circular wall of the correction wheel 15, the link plate 12 is provided as a connecting and supporting structure, stably connects the correction wheel 15 and the second motor 14 with the installation plate 6, and the mounting hole 13 is used for installing the second motor 14,The second motor 14 provides continuous and stable rotating power for the correction wheel 15, drives the correction wheel 15 to rotate at high speed through the rotation of the second motor 14, and when the correction chain is corrected, the rotating correction wheel 15 is in full contact with the surface of the chain, so as to apply friction and extrusion force to the chain, thereby realizing the correction operation of the chain. The first groove 16 is matched with the shape of the chain and can be closely combined with the chain during work, so as to increase the contact area and friction between the correction wheel 15 and the chain, make the correction force applied by the correction wheel 15 to the chain more uniform and effective, and thus improve the effect and precision of the chain correction.

[0031] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4The rectangular hole 17 is arranged at the top of the main body 1, the two second mounting grooves 18 are respectively arranged at the two sides of the inside of the rectangular hole 17, the two bearings 19 are respectively fixedly installed in the two second mounting grooves 18, the auxiliary wheel 20 is movably sleeved in the inside of the rectangular hole 17, the two connecting columns 21 are respectively fixedly installed at the two ends of the auxiliary wheel 20, the connecting column 21 is fixedly installed on the inner circular wall of the inner ring of the bearing 19, and the second groove 22 is arranged on the outer circular wall of the auxiliary wheel 20. The rectangular hole 17 is arranged to provide an installation space for the auxiliary wheel 20, the second mounting groove 18 is used for installing the bearing 19, the bearing 19 reduces the friction force when the auxiliary wheel 20 rotates, so that the auxiliary wheel 20 can rotate flexibly and smoothly, the auxiliary wheel 20 cooperates with the correction wheel 15 to support and constrain the chain from the other side, helps the correction wheel 15 to better exert pressure on the chain, so that the chain can keep a stable state when being corrected, improves the correction accuracy and effect, the connecting column 21 makes the connection between the auxiliary wheel 20 and the bearing 19 firm and reliable during rotation, and ensures the stability and reliability of the auxiliary wheel 20 during the working process, the second groove 22 can be closely combined with the chain, the contact area and the friction force between the auxiliary wheel 20 and the chain are increased, the support and constraint of the auxiliary wheel 20 on the chain are more effective, so that the correction wheel 15 is better assisted to correct the chain, the two first supporting blocks 23 are fixedly installed at the top of the main body 1, the right chain moving supporting plate 24 is fixedly installed at the top of the two first supporting blocks 23, the two second supporting blocks 25 are fixedly installed at the top of the main body 1, and the left chain moving supporting plate 26 is fixedly installed at the top of the two second supporting blocks 25. The first supporting block 23 is arranged to provide stable and reliable support for the right chain moving supporting plate 24, when the chain passes through the correction assembly and is corrected, the right chain moving supporting plate 24 provides a specific moving path and a support platform for the chain, the second supporting block 25 provides powerful support for the left chain moving supporting plate 26, and the left chain moving supporting plate 26 smoothly moves the chain to the groove of the auxiliary wheel 20, and prepares for subsequent correction work. The connecting plate 27 is fixedly installed on one side of the main body 1, the third mounting groove 28 is arranged on one side of the connecting plate 27, the third motor 29 is fixedly installed in the third mounting groove 28, and the chain moving gear 30 is fixedly installed at one end of the rotating shaft of the third motor 29. The connecting plate 27 is arranged to provide a reliable mounting position for the third motor 29, the third mounting groove 28 is used for installing the third motor 29, the third motor 29 drives the rotating shaft to rotate through the rotation of the third motor 29, and then drives the chain moving gear 30 to rotate. According to the actual needs of chain correction, it can be ensured that the chain moving gear 30 can drive the chain to move at a suitable speed and strength, meets the conveying requirements of chains of different specifications and materials, the chain moving gear 30 is meshed with the chain, can ensure good meshing between the chain moving gear 30 and the chain, provides stable driving force, and makes the chain keep stable during movement, avoids slipping or jamming phenomenon, and realizes continuous and accurate conveying of the chain.Provide necessary power support for the correction process of the chain.

[0032] Working principle: please refer to Figures 1-6 As shown in use, the chain to be corrected is placed smoothly on the left and right chain walking plates 26 and 24, ensuring that the chain is placed neatly on the plate without twisting or winding phenomenon, the power of the device is turned on, the third motor 29 is started, the third motor 29 drives the chain walking gear 30 to start rotating, the chain walking gear 30 generates enough traction force by closely meshing with the starting end link of the chain, and pulls the chain to move smoothly along the left chain walking plate 26 to the correction area, when the chain moves to the area where the auxiliary wheel 20 and the correction wheel 15 are located, the second motor 14 drives the correction wheel 15 to rotate at high speed, the first groove 16 on the outer wall of the correction wheel 15 tightly fits the chain, and during the rotation of the correction wheel 15, the chain is subjected to continuous and uniform extrusion force and friction force, at the same time, the auxiliary wheel 20 rotates freely under the support of the bearing 19, and the second groove 22 on the outer wall of the auxiliary wheel 20 cooperates with the chain to support and constrain the chain from the other side, and the shape and pitch of the chain are accurately corrected by the correction wheel 15, the first motor 8 drives the threaded column 9 to rotate, and since the threaded column 9 is screwed with the threaded hole 5 at the top of the U-shaped mounting frame 3, the mounting plate 6 will move up and down in the U-shaped mounting frame 3, so as to accurately adjust the pressure of the correction wheel 15 on the chain, and ensure that the correction effect reaches the best, and the corrected chain leaves the area of the correction wheel 15 and the auxiliary wheel 20 under the continuous pulling of the chain walking gear 30, and moves smoothly along the right chain walking plate 24 and is output.

[0033] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A chain straightening machine positive wheel mechanism, characterized in that, include: The main body (1) has four support legs (2) fixedly installed at the bottom and a U-shaped mounting bracket (3) fixedly installed at the top. The U-shaped mounting bracket (3) has two limiting holes (4) at the top and a threaded hole (5) at the top. A calibration component, which is disposed inside the U-shaped mounting bracket (3), is used to calibrate the chain.

2. The chain straightening machine positive wheel mechanism according to claim 1, characterized in that, The correction component includes: Mounting plate (6), which is movably fitted inside the U-shaped mounting bracket (3), has a first mounting groove (7) on its top, and a first motor (8) is fixedly installed inside the first mounting groove (7). A threaded post (9) is fixedly installed at one end of the rotating shaft of the first motor (8), and the threaded post (9) is threadedly connected to the threaded hole (5). Two limiting posts (10) are fixedly installed on the top of the mounting plate (6), and the limiting posts (10) are movably fitted to the limiting hole (4). Limiting plates (11) are fixedly installed on the top of the two limiting posts (10).

3. The chain straightening machine positive wheel mechanism according to claim 2, characterized in that, The correction component also includes: Two connecting plates (12) are fixedly installed on the bottom of the mounting plate (6). Each of the two connecting plates (12) has a mounting hole (13) on one side. A second motor (14) is fixedly installed inside each of the two mounting holes (13). A correction wheel (15) is fixedly installed between the two second motors (14). A first groove (16) is provided on the outer circular wall of the correction wheel (15).

4. The chain straightening machine positive wheel mechanism according to claim 1, characterized in that, The top of the main body (1) is provided with a rectangular hole (17). The two sides of the inside of the rectangular hole (17) are respectively provided with second mounting grooves (18). The two second mounting grooves (18) are respectively fixedly installed with bearings (19). An auxiliary wheel (20) is movably sleeved inside the rectangular hole (17). The two ends of the auxiliary wheel (20) are respectively fixedly installed with connecting columns (21). The connecting columns (21) are fixedly installed on the inner circular wall of the inner ring of the bearing (19). A second groove (22) is provided on the outer circular wall of the auxiliary wheel (20).

5. The chain straightening machine positive wheel mechanism according to claim 4, characterized in that, Two first support blocks (23) are fixedly installed on the top of the main body (1), and a right chain tray (24) is fixedly installed on the top of the two first support blocks (23). Two second support blocks (25) are fixedly installed on the top of the main body (1), and a left chain tray (26) is fixedly installed on the top of the two second support blocks (25).

6. The chain straightening machine positive wheel mechanism according to claim 5, characterized in that, A connecting plate (27) is fixedly installed on one side of the main body (1). A third mounting groove (28) is opened on one side of the connecting plate (27). A third motor (29) is fixedly installed inside the third mounting groove (28). A chain gear (30) is fixedly installed at one end of the rotating shaft of the third motor (29).

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