CN219745875U - Dabber pole convenient to maintain - Google Patents

Abstract

The utility model relates to the technical field of related equipment of uncoilers and discloses a mandrel rod convenient to maintain, which comprises a main body assembly, a winding part and a winding part, wherein the main body assembly comprises a base, a motor, a main shaft and the winding part, the motor is arranged on one side of the base, the main shaft is positioned on one side of the base, and the winding part is arranged on the surface of the main shaft; and the connecting assembly is arranged on one side of the main body assembly and comprises a pressing piece, a connecting piece and a limiting piece, the pressing piece is arranged on one side of the main shaft, the connecting piece is positioned in the main shaft, the limiting piece is arranged on one side of the connecting piece, the rolling piece comprises a first fixing clamp and a rotating column, the first fixing clamp is arranged on the surface of the main shaft, and the rotating column is positioned in the first fixing clamp. The utility model has the beneficial effects that: the mandrel rod can be quickly disassembled and maintained by arranging the connecting assembly, so that the maintenance time is saved.

Description

Dabber pole convenient to maintain

Technical Field

The utility model relates to the technical field of uncoiler related equipment, in particular to a mandrel rod convenient to maintain.

Background

The uncoiler is special equipment for leveling metal plates, a machine body is of a welded box-shaped structure, a variable-frequency speed regulating motor drives a drum shaft to provide a main power for the uncoiler after reducing speed through a gear box, a core shaft rod is a mechanical part for connecting rotating parts in the uncoiler, in the prior mechanical field, the parts are mutually connected, so that the normal work of large equipment is guaranteed, but some standard mandrels are inconvenient to fix and connect with the parts, and inconvenient to detach after connection, some traditional standard mandrels are used for clamping the parts through limiting strips, but the traditional limiting strips are not used for clamping and fixing the parts well, so that the service life of the parts and the service efficiency of the mechanical equipment are influenced, and the positioning mandrel device of the alloy coiled material uncoiler has the Chinese patent application number 202210291529.8 has the beneficial effects that: through setting up parts such as roller, conductive spring, can make each roller inwards shrink after the main shaft starts rotatory, so can push down the coiled material of constantly thinning, can enough guarantee to open a book going on smoothly, also prevent simultaneously to take place to collapse the dangerous, through adopting the electrorheological fluid, can open a book when main shaft rotation, produce the electric energy and supply power to the electrode plate through closing the coil, so can make the actuating fluid form the solid, further promote the stability of this device.

The existing mandrel rod is damaged after connecting mechanical parts for a long time, when the mandrel rod and other connecting structures are damaged, the whole connecting device cannot be replaced simply and timely, time and labor are wasted, the maintenance time and cost are high, and the operation of the whole mechanical equipment can be influenced.

Disclosure of Invention

This section is intended to outline some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the utility model and in the title of the utility model, which may not be used to limit the scope of the utility model.

The present utility model has been made in view of the above and/or existing problems with the existing mandrel bars that facilitate maintenance. Therefore, the utility model aims to solve the problems that the existing core shaft rod and the connecting structure thereof are damaged after the connecting mechanical parts work for a long time, and when the core shaft rod and other connecting structures are damaged, the whole connecting device cannot be replaced simply and timely, so that time and labor are wasted, the maintenance time and the maintenance cost are high, and the work of the whole mechanical equipment can be influenced.

In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides a dabber pole convenient to maintain, its includes, the main part subassembly, including base, motor, main shaft and shrink rolling element, the motor set up in base one side, the main shaft is located base one side, shrink rolling element set up in the main shaft surface; the method comprises the steps of,

the connecting assembly is arranged on one side of the main body assembly and comprises a pressing piece, a connecting piece and a limiting piece, wherein the pressing piece is arranged on one side of the main shaft, the connecting piece is positioned in the main shaft, and the limiting piece is arranged on one side of the connecting piece.

As a preferred embodiment of the maintenance-friendly mandrel bar according to the utility model, the following applies: the rolling piece comprises a first fixing clamp and a rotating column, wherein the first fixing clamp is arranged on the surface of the main shaft, and the rotating column is positioned in the first fixing clamp.

As a preferred embodiment of the maintenance-friendly mandrel bar according to the utility model, the following applies: the rolling piece further comprises a sliding plate and a sliding rod, the sliding plate is sleeved on the surface of the rotating column, and the sliding rod is located in the sliding plate.

As a preferred embodiment of the maintenance-friendly mandrel bar according to the utility model, the following applies: the rolling piece further comprises a second fixing clamp, an expansion piece and a sleeve, wherein the second fixing clamp is arranged at the end part of the sliding plate, the expansion piece is arranged at the end part of the sliding plate, and the sleeve is arranged in the second fixing clamp.

As a preferred embodiment of the maintenance-friendly mandrel bar according to the utility model, the following applies: the pressing piece comprises a supporting block and a rolling shaft, wherein the supporting block is arranged on one side of the main shaft, and the rolling shaft is positioned in the supporting block.

As a preferred embodiment of the maintenance-friendly mandrel bar according to the utility model, the following applies: the pressing piece further comprises a pressing plate and a first spring, the pressing plate is sleeved on the surface of the roller, and the first spring is arranged on one side of the pressing plate.

As a preferred embodiment of the maintenance-friendly mandrel bar according to the utility model, the following applies: the connecting piece comprises a mandrel rod and a limit nut, wherein the mandrel rod is arranged in the main shaft, and the limit nut is positioned at the end part of the mandrel rod.

As a preferred embodiment of the maintenance-friendly mandrel bar according to the utility model, the following applies: the limiting piece comprises a baffle and a second spring, the baffle is arranged at the end of the mandrel rod, and the second spring is positioned at one side of the baffle.

As a preferred embodiment of the maintenance-friendly mandrel bar according to the utility model, the following applies: the limiting part further comprises a supporting frame and a rolling column, the supporting frame is arranged on one side of the mandrel rod, and the rolling column is located in the supporting frame.

As a preferred embodiment of the maintenance-friendly mandrel bar according to the utility model, the following applies: the limiting piece further comprises an extrusion plate and a third spring, the extrusion plate is sleeved on the surface of the rolling column, and the third spring is arranged on one side of the extrusion plate.

The utility model has the beneficial effects that: the mandrel rod can be quickly disassembled and maintained by arranging the connecting assembly, so that the maintenance time is saved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:

FIG. 1 is a block diagram of a convenient maintenance core shaft.

Fig. 2 is a cross-sectional structural view of a core shaft for easy maintenance.

Fig. 3 is an enlarged structural view of the core shaft at X in fig. 2 for easy maintenance.

Detailed Description

In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present utility model is not limited to the specific embodiments disclosed below.

Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the utility model. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Example 1

Referring to fig. 1 to 3, in a first embodiment of the present utility model, a mandrel rod with easy maintenance is provided, where the mandrel rod with easy maintenance includes a main body assembly 100 and a connection assembly 200, the main body assembly 100 is used for unreeling coiled materials, the connection assembly 200 is used for connecting and fixing a mandrel rod 202a, the mandrel rod 202a is connected and removed conveniently through cooperation of the main body assembly 100 and the connection assembly 200, and the mandrel rod 202a and other connection structures are convenient for later maintenance, and when the rod body portion of the mandrel rod 202a and other connection structures are damaged, the whole connection device can be quickly maintained and replaced.

Specifically, the main body assembly 100 includes a base 101, a motor 102, a spindle 103, and a rolling member 104, where the motor 102 is disposed on one side of the base 101, the spindle 103 is disposed on one side of the base 101, and the rolling member 104 is disposed on a surface of the spindle 103.

The base 101 is used as a bearing main body, a bearing function is provided for a part body at the top of the base, the motor 102 is fixed on one side of the base 101 in a fixing mode such as bolt fixing, the motor 102 is used for providing driving force for the uncoiler, the main shaft 103 is located on one side of the base 101, the coil shrinking piece 104 is fixedly connected to the surface of the main shaft 103, the motor 102 is connected with the main shaft 103 through a rotating shaft and used for driving the main shaft 103 to rotate, the motor 102 drives the rotating shaft to drive the main shaft 103 to work, the main shaft 103 drives the coil shrinking piece 104 to rotate, and the coil shrinking piece 104 is used for fixing coiled materials, so that coiled materials are uncoiled or coiled.

The connecting assembly 200 is arranged on one side of the main body assembly 100 and comprises a pressing piece 201, a connecting piece 202 and a limiting piece 203, wherein the pressing piece 201 is arranged on one side of the main shaft 103, the connecting piece 202 is positioned in the main shaft 103, and the limiting piece 203 is arranged on one side of the connecting piece 202.

The pressing piece 201 presses the limiting piece 203 to enable the limiting piece 203 to be separated from the main shaft 103, so that the connecting piece 202 can be easily detached, the connecting piece 202 is used for supporting the rolling piece 104, meanwhile, the rolling piece 104 can be controlled to be scaled, the limiting piece 203 is used for fixing the connecting piece 202 in the main shaft 103, when the connecting piece 202 needs to be maintained, a pushing force is provided for the pressing piece 201, the pressing piece 201 presses the limiting piece 203 to enable the limiting piece 203 to be separated from the main shaft 103, and therefore the connecting piece 202 can be easily detached.

Specifically, the rolling member 104 includes a first fixing clip 104a and a rotating column 104b, the first fixing clip 104a is disposed on the surface of the spindle 103, and the rotating column 104b is disposed in the first fixing clip 104 a.

The first fixing clamp 104a is fixed on the surface of the main shaft 103 through bolts, the shape of the first fixing clamp 104a is a circular ring, two vertical plates are arranged on the surface of the first fixing clamp 104a, circular grooves are formed in the vertical plates, the first fixing clamp 104a enables the rolling piece 104 to be fixedly connected with the main shaft 103, the motor 102 drives the main shaft 103 to work and operate through a rotating shaft, the main shaft 103 drives the rolling material to operate through the first fixing clamp 104a, the number of the rotating columns 104b is 12, the rotating columns 104b penetrate through the circular grooves on the surface of the first fixing clamp 104a, the rotating columns 104b are connected in the circular grooves of the first fixing clamp 104a in a rotating mode, and the rotating columns 104b are used for driving other parts in the rolling piece 104 to work and rotate.

Specifically, the rolling element 104 further includes a sliding plate 104c and a sliding rod 104d, the sliding plate 104c is sleeved on the surface of the rotating column 104b, and the sliding rod 104d is located in the sliding plate 104 c.

The number of the sliding plates 104c is 12, one end of the sliding plate 104c is rotationally connected to the surface of the rotating column 104b, circular notches are formed in the middle of the sliding plate 104c, the sliding plate 104c is used for facilitating contraction or expansion of the coil shrinking piece 104, the number of the sliding rods 104d is 3, the sliding rods penetrate through the circular notches of the sliding plate 104c, the sliding rods 104d are rotationally connected in the circular notches of the sliding plate 104c, the sliding rods 104d are used for fixing the two sliding plates 104c on the same side, deflection and deformation of the two sliding plates are prevented, and when a coil needs to be fixed or removed by an uncoiler, an external driving force is provided for the sliding plates 104c, so that the sliding plates 104c and the sliding rods 104d are mutually matched to achieve contraction or expansion, and the coil is fixed.

Specifically, the rolling element 104 further includes a second fixing clip 104e, an expansion piece 104f, and a sleeve 104g, where the second fixing clip 104e is disposed at an end of the sliding plate 104c, the expansion piece 104f is disposed at an end of the sliding plate 104c, and the sleeve 104g is disposed in the second fixing clip 104 e.

The second fixing clamp 104e is sleeved on the surface of the sleeve 104g, the second fixing clamp 104e is connected with the sleeve 104g through threads in a rotating way, a thread groove is formed in the surface of the sleeve 104g, the thread groove matched with the sleeve 104g is formed in the inner wall of the second fixing clamp 104e, the shape of the second fixing clamp 104e is a circular ring, two vertical plates are arranged on the surface of the second fixing clamp 104e, circular grooves are formed in the vertical plates, the second fixing clamp 104e supports the rolling piece 104, meanwhile, the sliding plate 104c in a moving working state is limited, the rolling piece is convenient to stretch better, the number of the expansion pieces 104f is 3, a circular notch is formed in one side of the expansion piece 104f, the sliding plate 104c is connected with the expansion piece 104f through a rotating way, the surface of the expansion piece 104f is directly contacted with the rolling material and used for placing the rolling material, the sleeve 104g is connected in the second fixing clamp 104e through threads in a rotating way, threads are formed in the surface of the sleeve 104g, the second fixing clamp 104e is convenient to slide according to a certain track to prevent the second fixing clamp from deviating, a cylinder table is arranged at one end part of the sleeve 104g, the other end of the sleeve 104g is sleeved on the surface of the connecting piece 202, the sleeve 104g can be fixedly connected with the main shaft 103 through the connecting piece 202, when coil materials are required to be uncoiled, the sleeve 104g and the main shaft 103 are in a fixed connection state through the connecting piece 202, the motor 102 provides driving force to drive the main shaft 103 to work and rotate, the main shaft 103 synchronously rotates the sleeve 104g and the main shaft through the first fixing clamp 104a and the second fixing clamp 104e, so that an expansion piece 104f at the end part of the sliding plate 104c is driven to support the coil materials borne outside, the coil materials are driven to operate, when coil materials with different inner diameters are required to be processed, the sleeve 104g and the main shaft 103 are not fixedly connected through the connecting piece 202, the second fixing clamp 104e rotates on the surface of the sleeve 104g under the driving of the external force, and the second fixing clamp 104e drives the sliding plate 104c to stretch, thereby adjusting to the corresponding inner diameter for different coil stock.

Example 2

Referring to fig. 2 to 3, this embodiment is based on the previous embodiment, which is a second embodiment of the present utility model.

Specifically, the pressing member 201 includes a supporting block 201a and a roller 201b, the supporting block 201a is disposed on one side of the spindle 103, and the roller 201b is disposed in the supporting block 201 a.

The surface of supporting block 201a is provided with two risers, and circular slot has all been seted up to the riser for pressing piece 201 is fixed in main shaft 103, thereby makes pressing piece 201 control locating part 203, and roller 201b rotates to be connected in supporting block 201a, is convenient for pressing piece 201 presses.

Specifically, the pressing member 201 further includes a pressing plate 201c and a first spring 201d, the pressing plate 201c is sleeved on the surface of the roller 201b, and the first spring 201d is disposed on one side of the pressing plate 201 c.

The pressing plate 201c is rotatably connected to the surface of the roller 201b, a bump is formed at the bottom of the pressing plate 201c and used for extruding the limiting piece 203, one end of the first spring 201d is fixed on one side of the pressing plate 201c, the other end of the first spring 201d is fixed on the surface of the spindle 103, the first spring 201d is used for supporting and limiting the pressing plate 201c, when the connecting piece 202 needs to be maintained, the pressing plate 201c extrudes the first spring 201d to deform under the pushing of external force, so that the bump at the bottom of the pressing plate 201c passes through the notch formed on the surface of the spindle 103 and extrudes the limiting piece 203, the connecting piece 202 is separated from the spindle 103, and the connecting piece 202 can be easily taken out for maintenance and replacement.

Specifically, the connector 202 includes a spindle shaft 202a and a stop nut 202b, the spindle shaft 202a is disposed in the spindle 103, and the stop nut 202b is disposed at an end of the spindle shaft 202 a.

The spindle shaft 202a is arranged in the spindle 103, the middle part of the spindle shaft 202a is in a cylinder with a larger diameter, the two ends of the spindle shaft 202a are cylinders with a smaller diameter, the end parts of the spindle shaft 202a are provided with screw grooves, the limit nut 202b is rotationally connected in the spindle shaft 202a through the screw grooves, so that the sleeve 104g is fixed on the spindle shaft 202a, the spindle 103 is indirectly and fixedly connected with the sleeve 104g, the sleeve 104g and the spindle 103 are rotated together, when the uncoiling inner diameter needs to be adjusted, the limit nut 202b is rotated, the fastening of the sleeve 104g is released, the sleeve 104g is slidably connected on the surface of the spindle shaft 202a, at the moment, the spindle 103 and the sleeve 104g are not in an indirect and fixedly connected state any more, an external force is provided to enable the sleeve 104g to rotate, and the sleeve 104g rotates to drive the second fixing clamp 104e to rotate, so that the sliding plate 104c stretches, and the coiled material is fixed.

Example 3

Referring to fig. 2 to 3, a third embodiment of the present utility model is based on the first two embodiments.

Specifically, the limiting member 203 includes a blocking plate 203a and a second spring 203b, the blocking plate 203a is disposed at an end of the spindle shaft 202a, and the second spring 203b is disposed on one side of the blocking plate 203 a.

The baffle 203a is disposed at an end of the spindle shaft 202a, and is used for supporting the spindle shaft 202a, two ends of the second spring 203b are respectively fixed on one side of the baffle 203a and an inner wall of the spindle 103, when the spindle shaft 202a is installed after maintenance is completed, the spindle shaft 202a can press the baffle 203a, so that the baffle 203a presses the second spring 203b to deform, when the spindle shaft 202a needs to be maintained, an external force is provided to press the pressing plate 201c to release the limit of the limiting piece 203 on the spindle shaft 202a, and at this time, the second spring 203b resumes deformation to enable the spindle shaft 202a to pop out for a certain distance, so that the spindle shaft 202a is easier to take out.

Specifically, the limiting member 203 further includes a supporting frame 203c and a rolling post 203d, the supporting frame 203c is disposed on one side of the spindle shaft 202a, and the rolling post 203d is disposed in the supporting frame 203 c.

The support frame 203c is fixed in core axostylus axostyle 202a one side, and the surface of support frame 203c is provided with two risers, and the circular slot has all been seted up to the riser for spacing to pressing piece 201 other parts, and the rolling post 203d rotates to be connected in supporting piece 201a, conveniently presses to locating part 203.

Specifically, the limiting member 203 further includes a pressing plate 203e and a third spring 203f, the pressing plate 203e is sleeved on the surface of the rolling post 203d, and the third spring 203f is disposed on one side of the pressing plate 203 e.

The circular groove is formed in the surface of the extrusion plate 203e, the extrusion plate 203e is rotationally connected to the surface of the rolling column 203d, the top of the extrusion plate 203e is provided with the protruding block, one end of the third spring 203f is fixed to one side of the extrusion plate 203e, the protruding block formed in the top of the extrusion plate 203e is clamped in the spindle 103 under the elastic action of the third spring 203f, so that the spindle 202a is fixed, meanwhile, the protruding block formed in the top of the extrusion plate 203e is located on one side of the protruding block formed in the bottom of the pressing plate 201c, when the spindle 202a needs to be maintained, the protruding block formed in the top of the extrusion plate 203e is clamped and limited by the notch formed in the spindle 103 at this moment, the pressing plate 201c extrudes the first spring 201d to deform under the pushing of the external force, so that the protruding block formed in the bottom of the pressing plate 201c penetrates through the notch formed in the surface of the spindle 103 to push the extrusion plate 203e to press the third spring 203f, and the spindle 202a is separated from the spindle 202a, and the spindle 202a can be easily taken out for maintenance and replacement at this moment.

When the mandrel rod is not damaged in use, the limiting nut 202b is screwed by external force to fixedly connect the sleeve 104g with the mandrel rod 202a, the limiting piece 203 fixedly connected with the surface of the mandrel rod 202a enables the sleeve 104g to be in an indirect fixed state with the spindle, the motor 102 drives the spindle 103 to work and operate through the rotating shaft, the rotating shaft drives the first fixing clamp 104a fixedly connected with the surface of the spindle to start rotating, other parts in the first fixing clamp 104a and the rolling piece 104 are mutually matched, so that coiled materials borne on the surface of the expansion piece 104f start to operate, at the moment, the uncoiler, the mandrel rod 202a and the sleeve 104g rotate together, the uncoiler starts to perform coiled materials, when the inner diameters of uncoiling of different coiled materials need to be adjusted, the limiting nut 202b is rotated to enable the sleeve 104g to be only in sliding connection with the surface of the mandrel rod 202a, at the moment, the spindle 103 and the sleeve 104g are not in the indirect fixed connection state any more, the sleeve 104g can be rotated by providing external force, the sleeve 104g drives the second fixing clamp 104e to rotate, and the expansion piece 104f is rotated, and thus the expansion piece 104f is adjusted through expansion of the expansion plate 104 c.

When the mandrel rod is damaged or needs to be maintained, when the mandrel rod 202a needs to be maintained through external force, the pressing plate 201c presses the first spring 201d to deform under the pushing of the external force, so that the protruding block at the bottom of the pressing plate 201c penetrates through the notch formed in the surface of the spindle 103, and further the protruding block on the surface of the pressing plate 203e is pressed, so that the protruding block on the surface of the pressing plate 203e is not clamped into the spindle 103 any more, the limiting of the mandrel rod 202a and the spindle 103 is removed, the mandrel rod 202a can be easily taken out for maintenance and replacement at the moment, after the maintenance is completed, the mandrel rod 202a is pushed into the spindle 103, the end of the mandrel rod 202a presses the baffle 203a to deform the second spring 203b, and under the action of the reset elastic force of the third spring 203f, the protruding block formed at the top of the pressing plate 203e and the notch formed in the surface of the spindle 103 are clamped, and the whole installation and disassembly processes are time-saving, labor-saving, simple and convenient.

It should be noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present utility model may be modified or substituted without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered in the scope of the claims of the present utility model.

Claims (10)

1. Dabber pole convenient to maintain, its characterized in that: comprising the steps of (a) a step of,

the main body assembly (100) comprises a base (101), a motor (102), a main shaft (103) and a rolling piece (104), wherein the motor (102) is arranged on one side of the base (101), the main shaft (103) is positioned on one side of the base (101), and the rolling piece (104) is arranged on the surface of the main shaft (103); the method comprises the steps of,

the connecting assembly (200) is arranged on one side of the main body assembly (100), and comprises a pressing piece (201), a connecting piece (202) and a limiting piece (203), wherein the pressing piece (201) is arranged on one side of the main shaft (103), the connecting piece (202) is positioned in the main shaft (103), and the limiting piece (203) is arranged on one side of the connecting piece (202).

2. The maintenance-friendly spindle shaft as set forth in claim 1, wherein: the rolling piece (104) comprises a first fixing clamp (104 a) and a rotating column (104 b), wherein the first fixing clamp (104 a) is arranged on the surface of the main shaft (103), and the rotating column (104 b) is positioned in the first fixing clamp (104 a).

3. The maintenance-friendly spindle shaft as set forth in claim 2, wherein: the rolling piece (104) further comprises a sliding plate (104 c) and a sliding rod (104 d), the sliding plate (104 c) is sleeved on the surface of the rotating column (104 b), and the sliding rod (104 d) is located in the sliding plate (104 c).

4. A maintenance-friendly spindle rod as defined in claim 3, wherein: the rolling piece (104) further comprises a second fixing clamp (104 e), an expansion piece (104 f) and a sleeve (104 g), wherein the second fixing clamp (104 e) is arranged at the end part of the sliding plate (104 c), the expansion piece (104 f) is arranged at the end part of the sliding plate (104 c), and the sleeve (104 g) is arranged in the second fixing clamp (104 e).

5. The maintenance-friendly core shaft as claimed in claim 3 or 4, wherein: the pressing piece (201) comprises a supporting block (201 a) and a rolling shaft (201 b), the supporting block (201 a) is arranged on one side of the main shaft (103), and the rolling shaft (201 b) is located in the supporting block (201 a).

6. The maintenance-friendly spindle shaft as set forth in claim 5, wherein: the pressing piece (201) further comprises a pressing plate (201 c) and a first spring (201 d), the pressing plate (201 c) is sleeved on the surface of the roller (201 b), and the first spring (201 d) is arranged on one side of the pressing plate (201 c).

7. The maintenance-friendly spindle shaft as set forth in claim 6, wherein: the connecting piece (202) comprises a mandrel rod (202 a) and a limit nut (202 b), wherein the mandrel rod (202 a) is arranged in the main shaft (103), and the limit nut (202 b) is positioned at the end part of the mandrel rod (202 a).

8. The maintenance-friendly spindle shaft as set forth in claim 7, wherein: the limiting piece (203) comprises a baffle (203 a) and a second spring (203 b), the baffle (203 a) is arranged at the end part of the mandrel rod (202 a), and the second spring (203 b) is arranged at one side of the baffle (203 a).

9. The maintenance-friendly spindle shaft as set forth in claim 8, wherein: the limiting piece (203) further comprises a supporting frame (203 c) and a rolling column (203 d), wherein the supporting frame (203 c) is arranged on one side of the mandrel rod (202 a), and the rolling column (203 d) is located in the supporting frame (203 c).

10. The maintenance-friendly spindle shaft as set forth in claim 9, wherein: the limiting piece (203) further comprises a squeezing plate (203 e) and a third spring (203 f), the squeezing plate (203 e) is sleeved on the surface of the rolling column (203 d), and the third spring (203 f) is arranged on one side of the squeezing plate (203 e).