Rotating rod device facilitating installation of lithium ion battery material coil

By designing a rotary rod device including a support rod assembly, a support plate, a rotating shaft and an anti-detachment structure, the problems of easy bending and inconvenient installation of the cantilever-shaped rotary rod during the installation of the pole roll in the prior art are solved, and the stable and efficient installation of the pole roll is achieved.

CN223032579UActive Publication Date: 2025-06-27GUIZHOU JIAYING TECH CO LTD
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Patent Information

Application Number
CN202422249947.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-13
Publication Date
2025-06-27
Estimated Expiration
2034-09-13

AI Technical Summary

Technical Problem

The existing lithium-ion battery pole rolling rod device is prone to cause the cantilever-shaped rotating rod to bend when installing the pole roll, and it is difficult to control the direction of movement of the forklift to push the pole roll into the pole.

Method used

A rotary rod device including a support rod assembly, a spaced support plate, a rotary shaft, a support block and an anti-detachment structure is designed. By inserting the support rod assembly into the through hole in the center of the pole roll and installing it with a forklift, the rectangular block on the support head snaps into the support groove, and combining the anti-detachment structure to prevent falling off, the stable installation of the pole roll is achieved.

Benefits of technology

It effectively avoids the bending problem of the cantilever-shaped rotary rod when installing the pole roll, and simplifies the installation process of the pole roll, ensuring the stability and safety of the installation.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of lithium ion battery pole piece production equipment, in particular to a rotating rod device facilitating installation of a lithium ion battery material roll. The rotating rod device comprises a supporting rod assembly and two supporting plates arranged in a spaced mode, rotating shafts are installed on the two supporting plates respectively, and the axes of the two rotating shafts coincide. Supporting blocks are welded to the opposite inner side ends of the two rotating shafts correspondingly. A rectangular supporting groove is formed in the supporting block, and notches are formed in the top face and the inner side end face of the supporting groove. Supporting heads are arranged at the two ends of the supporting rod assembly respectively, and rectangular blocks are arranged on the supporting heads. The rectangular block is clamped in the supporting groove; an anti-falling structure is arranged on the supporting block and used for preventing the rectangular block from falling off from the supporting groove. By the adoption of the pole piece roll pushing device, the problem that in the prior art, a cantilever-shaped rotating rod is adopted for installing a pole piece roll, and bending is prone to being caused is effectively solved, and meanwhile the problem that in the prior art, the moving direction of a forklift is difficult to control so that the pole piece roll can be pushed into the rotating rod is effectively solved.
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Description

Technical Field

[0001] The utility model relates to the technical field of lithium-ion battery pole piece production equipment, in particular to a rotating rod device for facilitating the installation of lithium-ion battery material rolls. Background Art

[0002] During the production process of soft-pack lithium-ion batteries, the pole piece roll needs to be placed on a rotating rod. As the rotating rod rotates, the pole piece gradually unfolds for feeding to the equipment for processing. Since the pole piece roll is relatively heavy, a special rotating rod device is required for feeding. The existing rotating rod devices, such as Figure 1 、 Figure 2 As shown, two inverted U-shaped brackets 101 are installed on the bottom plate 100. A rotating shaft seat 102 is rotatably installed on the top cross beam of one of the brackets 101. A rotating rod is installed on the rotating shaft seat 102. At the same time, a motor box 103 is also installed on the rotating shaft seat 102, and a driving motor is installed inside the motor box 103 to drive the rotating rod to rotate. A clamping plate 104 is provided on the top cross beam of the other bracket 100. The cantilever end of the rotating rod can be clamped in the clamping opening of the clamping plate 104, and the cantilever end of the rotating rod and the clamping opening of the clamping plate 104 are in rotational fit.

[0003] The working principle of the above-mentioned existing rotating rod device is as follows: The pole piece roll is installed on the rotating rod, and the driving motor in the motor box 103 drives the rotating rod to rotate for feeding. When installing the pole piece roll, it is necessary to manually rotate the rotating shaft seat 102 so that the rotating rod forms a cantilever shape after disengaging from the clamping opening of the clamping plate 104 (as shown in Figure 2 ). After using a forklift to fork up the pole piece, align the central hole of the pole piece roll with the cantilever end of the rotating rod, and then move the forklift to push the entire pole piece roll onto the rotating rod. The existing rotating rod device has the following problems: (1) Since the pole piece roll is relatively heavy, the cantilever-shaped rotating rod is likely to be bent during the installation of the pole piece roll; (2) Since there is an angle between the rotating rod and the connection line of the two brackets 100, it is difficult to control the moving direction of the forklift when pushing the pole piece roll onto the rotating rod, so it is inconvenient to push the pole piece roll from the cantilever end to the middle position of the rotating rod. Content of the Utility Model

[0004] The main purpose of the present utility model is to propose a rotating rod device for facilitating the installation of lithium-ion battery material rolls, aiming to solve the above technical problems.

[0005] To achieve the above-mentioned purpose, the utility model proposes a rotating rod device which is convenient for installing lithium-ion battery material coils, comprising a support rod assembly and two support plates arranged at intervals, on which rotating shafts are respectively installed, and the axes of the two rotating shafts coincide; support blocks are respectively welded at the opposite inner ends of the two rotating shafts; a rectangular supporting groove is arranged on the support block, and the top surface and the inner end surface of the supporting groove are both arranged as notches; support heads are respectively arranged at the two ends of the support rod assembly, and a rectangular block is arranged on the support head; and the rectangular block is clamped in the supporting groove; an anti-slip structure is arranged on the support block to prevent the rectangular block from falling off from the supporting groove.

[0006] Preferably, a bearing sleeve is provided on the support plate; and two bearings are provided in the inner hole of the bearing sleeve; and both ends of the rotating shaft are provided as shaft journals and are respectively inserted into the inner holes of the bearings.

[0007] Preferably, a flange plate is provided on the bearing sleeve; and the flange plate abuts against the inner side surface of the support plate; the support plate and the flange plate are fastened and connected by a plurality of screws.

[0008] Preferably, the anti-slip structure includes a disc body; the support block is arranged in a rectangular hole at the center of the disc body, and the two side wall panels of the support groove are connected to the disc body by pins respectively; a guide cylinder is arranged on the flange plate; a yielding inclined surface is arranged on the upper half of the end face of the guide cylinder; and a flat surface is arranged on the lower half of the end face of the guide cylinder; when the disc body rotates around the pin and abuts against the yielding inclined surface of the guide cylinder, the rectangular hole in the center of the disc body and the rectangular block are staggered to form a yielding surface; when the disc body rotates around the pin and abuts against the flat surface of the guide cylinder, the rectangular hole in the center of the disc body forms a blocking limit for the rectangular block; and the flat surface of the guide cylinder and the end face of the disc body are slidably matched.

[0009] Preferably, a vertical limiting steel ball mounting hole is provided on the disc body; a spherical pit is provided on the top surface of one side wall plate of the supporting groove; a steel ball and a spring are installed in sequence in the limiting steel ball mounting hole; a top screw is installed at the mouth of the steel ball mounting hole, one end of the spring is pressed against the top screw, and the other end is pressed against the steel ball; when the disc body rotates around the pin shaft and abuts against the flat surface of the guide cylinder, the steel ball is pressed tightly against the spherical pit.

[0010] Preferably, guide protrusions are respectively provided on the tops of the two side wall plates of the support groove, and guide inclined surfaces are provided on the opposite surfaces of the two guide protrusions.

[0011] Preferably, the support rod assembly comprises a hollow tube body, and an inserting portion is arranged on the support head; the inserting portion is inserted into a central hole at the end of the tube body, and an anti-rotation pin is inserted between the tube body and the inserting portion.

[0012] Preferably, a seat plate is provided at the bottom of the support plate, and anchor bolt holes are provided at the four corners of the seat plate.

[0013] Preferably, the step surfaces at the journals at both ends of the rotating shaft abut against the inner ring end surface of the bearing, and an annular limit platform is provided in the inner hole of the bearing sleeve and abuts against the outer ring of the bearing; the bearing is a deep groove ball bearing.

[0014] Preferably, an end cover is provided on the outer end of the bearing sleeve and is installed by screws; a sealing ring is provided between the inner hole surface of the annular limit platform and the shaft neck of the rotating shaft; and an oil filling hole is provided on the bearing sleeve.

[0015] Due to the adoption of the above technical solution, the beneficial effects of the utility model are as follows:

[0016] (1) By adopting the rotating rod device provided by the utility model, when installing the electrode roll, it is only necessary to remove the support rod assembly from the entire device and insert it into the through hole in the center of the electrode roll, and then use a forklift to fork and move the electrode roll with the support rod assembly installed, so that the support heads at both ends of the support rod assembly are located above the support block, and then slowly lower the entire electrode roll so that the rectangular block on the support head is inserted into the support groove from the notch of the support groove, and then use the anti-slip structure to prevent the rectangular block from falling off the support groove, and the installation of the electrode roll can be completed.

[0017] (2) The present invention effectively overcomes the problem in the prior art that the pole piece roll is easily bent when the pole piece roll is installed using a cantilevered rotating rod.

[0018] (3) When installing the pole piece roll, the utility model removes the support rod assembly and inserts it into the through hole in the center of the pole piece roll. A forklift is used to fork up and install the pole piece roll together with the support rod assembly as a whole, thereby effectively overcoming the problem in the prior art that it is difficult to control the moving direction of the forklift to push the pole piece roll onto the rotating rod.

[0019] (4) In the utility model, when the disc body in the anti-slip structure rotates around the pin shaft and abuts against the inclined surface of the guide cylinder, the rectangular hole in the center of the disc body and the rectangular block are staggered to form a slip; when the disc body rotates around the pin shaft and abuts against the flat surface of the guide cylinder, the rectangular hole in the center of the disc body forms a blocking limit for the rectangular block. Even if the operator forgets to turn the disc body from the inclined state to the vertical state, as long as the support rod assembly rotates during material discharge, the rotating shaft and the disc body can be driven to rotate together. Since the guide cylinder does not rotate, the inclined surface of the guide cylinder blocks the rotating disc body and can automatically straighten the disc body, thereby playing an anti-slip effect. The structure is simple and the anti-slip performance is reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of a transfer rod device in the prior art;

[0022] Figure 2 A schematic diagram of installing a material roll using a rotating rod device in the prior art;

[0023] Figure 3 This is a structural cross-sectional view of the rotating rod device provided by the utility model, and the disc body is in a locked and anti-slip state;

[0024] Figure 4 The explosion of some parts of the utility model Figure 1 ;

[0025] Figure 5 The explosion of some parts of the utility model Figure 2 ;

[0026] Figure 6 It is a three-dimensional structural diagram of the bearing sleeve in the utility model;

[0027] Figure 7 It is a cross-sectional view of the bearing sleeve in the utility model;

[0028] Figure 8 This is a schematic diagram of an assembly formed after the rotating shaft and the supporting block are welded in the utility model;

[0029] Figure 9 This is a schematic diagram of the structure of the support head in the utility model;

[0030] Figure 10 This is a structural cross-sectional view of the rotating rod device provided by the utility model, and the disc body is in a tilted yielding state;

[0031] Figure 11 It is a three-dimensional structural diagram of the utility model, and the disc body is in a locked and anti-loosening state;

[0032] Figure 12 It is a three-dimensional structural diagram of the utility model, and the disc body is in a tilted yielding state.

[0033] Description of the attached reference numerals: 1. support plate; 1a. seat plate; 2. rotating shaft; 3. pipe body; 4. support block; 4a. support groove; 4b. guiding projection; 4c. guiding inclined surface; 4d. spherical pit; 5. support head; 5a. rectangular block; 5b. insertion part; 6. bearing sleeve; 6a. flange plate; 6b. guiding cylinder; 6c. relieving inclined surface; 6d. flat surface; 6e. annular limiting platform; 6f. oil injection hole; 7. bearing; 8. screw; 9. disc body; 9a. limiting steel ball installation hole; 10. pin shaft; 11. steel ball; 12. spring; 13. setscrew; 14. anti-rotation pin; 15. end cover; 16. sealing ring; 100. bottom plate; 101. bracket; 102. rotating shaft seat; 103. motor box; 104. clamping plate. Detailed implementation manners

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035] It should be noted that all the directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0036] Combined with Figures 3 to 12 As shown, it is a specific embodiment of a rotating rod device for facilitating the installation of a lithium-ion battery coil provided by the present invention. The device includes a rotating rod assembly and two spaced support plates 1. Rotating shafts 2 are respectively installed on the two support plates 1, and the axes of the two rotating shafts 2 coincide; Support blocks 4 are respectively welded to the inner ends of the two rotating shafts 2 facing each other; A rectangular support groove 4a is provided on the support block 4, and the top surface and the inner end surface of the support groove 4a are both provided as notches; Support heads 5 are respectively provided at both ends of the support rod assembly, and rectangular blocks 5a are provided on the support heads 5; And the rectangular block 5a is clamped in the support groove 4a; An anti-detachment structure is provided on the support block 4 to prevent the rectangular block 5a from falling out of the support groove 4a.

[0037] By adopting the above structure, when installing the pole piece roll, only need to remove the support rod assembly from the whole device, insert it into the through hole in the center of the pole piece roll, then use a forklift to lift and move the pole piece roll after installing the support rod assembly, so that the support heads 5 at both ends of the support rod assembly are located above the support blocks 4, and then slowly lower the whole pole piece roll, so that the rectangular blocks 5a on the support heads 5 are snapped into the support grooves 4a from the notches of the support grooves 4a, and then use the anti - detachment structure to prevent the rectangular blocks 5a from falling off from the support grooves 4a, then the installation of the pole piece roll can be completed.

[0038] In this embodiment, a bearing sleeve 6 is arranged on the support plate 1; and two bearings 7 are arranged in the inner hole of the bearing sleeve 6; the two ends of the rotating shaft 2 are set as journal shafts and are respectively inserted into the inner holes of the bearings 7. By using the bearings 7, the smooth rotation of the rotating shaft 2 is ensured.

[0039] During actual use, in order to meet the feeding requirements, a driving motor (not shown in the figure) can be connected to the outer end of one of the rotating shafts 2 to drive the whole support rod assembly to rotate, so as to facilitate the realization of the feeding function. The installation of the driving motor is a conventional existing structure and will not be elaborated here.

[0040] Combined with Figure 3 、 Figure 4 and Figure 11 As shown, a flange plate 6a is arranged on the bearing sleeve 6; and the flange plate 6a abuts against the inner side surface of the support plate 1; the support plate 1 and the flange plate 6a are fixedly connected by a plurality of screws 8.

[0041] Combined with Figure 3 、 Figure 5 、 Figures 10 to 12As shown, the anti-slip structure includes a disc body 9; the support block 4 is arranged in a rectangular hole at the center of the disc body 9, and the two side wall plates of the support groove 4a are connected to the disc body 9 through a pin shaft 10 respectively; a guide cylinder 6b is arranged on the flange plate 6a; the upper half of the end surface of the guide cylinder 6b is provided with a yielding inclined surface 6c; the lower half of the end surface of the guide cylinder 6b is provided with a flat surface 6d; when the disc body 9 rotates around the pin shaft 10 and abuts against the yielding inclined surface 6c of the guide cylinder 6b, the rectangular hole at the center of the disc body 9 and the rectangular block 5a are staggered to form a yielding position, at which time the pole piece roll can be installed, or the support rod assembly can be removed. When the disc body 9 rotates around the pin shaft 10 and abuts against the flat surface 6d of the guide cylinder 6b, the rectangular hole at the center of the disc body 9 forms a blocking limit for the rectangular block 5a, preventing the rectangular block 5a on the support rod assembly from falling off from the support groove 4a. The flat surface 6d of the guide cylinder 6b is in sliding cooperation with the end surface of the disc body 9. Even if the operator forgets to turn the disc body 9 from the inclined state to the vertical state after the pole piece roll is installed, as long as the support rod assembly rotates during material discharge, the rotating shaft 1 and the disc body 9 can be driven to rotate together. Since the guide cylinder 6a does not rotate, the inclined surface 6c of the guide cylinder 6a blocks the rotating disc body 9 and can automatically adjust the disc body 9 to the vertical state, thereby playing a role in preventing it from falling off.

[0042] Combination Figure 4 , 5 , 8 and Figure 11 As shown; a vertical limit steel ball installation hole 9a is provided on the disc body 9; a spherical concave pit 4d is provided on the top surface of one side wall plate of the support groove 4a; a steel ball 11 and a spring 12 are installed in sequence in the limit steel ball installation hole 9a; a top screw 13 is installed at the mouth of the steel ball installation hole 9a, one end of the spring 12 presses on the top screw 13, and the other end presses on the steel ball 11; when the disc body 9 rotates around the pin 10 and abuts against the flat surface 6d of the guide cylinder 6b, the steel ball 11 presses tightly on the spherical concave pit 4d. The spring 12 always forms a thrust on the steel ball 11. When the support rod assembly needs to be removed, the operator can move the disc body 9 to rotate around the pin 10, and the steel ball 11 can slide out of the spherical concave pit 4d. When the disc body 9 is reset to the vertical state, the steel ball 11 falls into the spherical pit 4d, playing a blocking and limiting role, and is used to limit the disc body 9 from rotating around the pin shaft 10 by itself.

[0043] Combination Figure 4 As shown, guide protrusions 4b are respectively provided on the tops of the two side wall plates of the support groove 4a, and guide slopes 4c are provided on the opposite surfaces of the two guide protrusions 4b. When installing the pole piece roll, the two oppositely arranged guide slopes 4c guide the rectangular block 5a on the support head 5, so that the rectangular block 5a can slide into the support groove 4a of the support block 4.

[0044] Combined with Figure 3 , Figure 9 As shown, the support rod assembly includes a hollow tube body 3, and a plug-in portion 5b is provided on the support head 5; the plug-in portion 5b is inserted into the central hole at the end of the tube body 3, and an anti-rotation pin 14 is inserted between the tube body 3 and the plug-in portion 5b.

[0045] Combined with Figure 3 , Figure 11 As shown, a seat plate 1a is provided at the bottom of the support plate 1, and anchor bolt holes are provided at the four corner positions of the seat plate 1a. By providing the seat plate 1a, it is convenient to install the entire device on the ground through anchor bolts.

[0046] Combined with Figure 3 , Figure 7 As shown, the stepped surfaces at the two ends of the shaft neck of the rotating shaft 2 abut against the inner ring end surfaces of the bearings 7, and an annular limiting platform 6e is provided in the inner hole of the bearing sleeve 6 and abuts against the outer ring of the bearing 7; the bearing 7 is a deep groove ball bearing. By jointly forming an axial limiting effect by using the stepped surface at the shaft neck and the annular limiting platform 6e, axial movement of the rotating shaft 1 is avoided.

[0047] Combined with Figure 3 , Figure 4 As shown, an end cover 15 is installed on the outer side end of the bearing sleeve 6 by screws; a sealing ring 16 is provided between the inner hole surface of the annular limiting platform 6e and the shaft neck of the rotating shaft 2; an oil injection hole 6f is provided on the bearing sleeve 6. By using the oil injection hole 6f, lubricating oil can be injected into the interior of the bearing sleeve 6 for lubricating the bearing 7.

[0048] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made under the concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A rotating rod device for facilitating installation of lithium-ion battery rolls, characterized in that: It comprises a support rod assembly and two spaced support plates (1), on which rotating shafts (2) are respectively mounted, and the axes of the two rotating shafts (2) coincide with each other; and support blocks (4) are respectively welded to the opposite inner ends of the two rotating shafts (2); A rectangular support groove (4a) is provided on the support block (4), and the top surface and inner end surface of the support groove (4a) are both provided with notches; support heads (5) are provided at both ends of the support rod assembly, and a rectangular block (5a) is provided on the support head (5); and the rectangular block (5a) is clamped in the support groove (4a); An anti-falling structure is provided on the support block (4) to prevent the rectangular block (5a) from falling off from the support groove (4a).

2. A rotating rod device for facilitating installation of lithium-ion battery rolls as claimed in claim 1, characterized in that: A bearing sleeve (6) is arranged on the support plate (1); and two bearings (7) are arranged in the inner hole of the bearing sleeve (6); and both ends of the rotating shaft (2) are arranged as shaft journals and are respectively inserted into the inner holes of the bearings (7).

3. A rotating rod device for facilitating installation of lithium-ion battery rolls as claimed in claim 2, characterized in that: A flange plate (6a) is provided on the bearing sleeve (6); the flange plate (6a) abuts against the inner side surface of the support plate (1); the support plate (1) and the flange plate (6a) are fastened and connected by a plurality of screws (8).

4. A rotating rod device for facilitating installation of lithium-ion battery rolls as claimed in claim 3, characterized in that: The anti-slip structure comprises a disc body (9); the support block (4) is arranged in a rectangular hole at the center of the disc body (9); the side wall plates of the support groove (4a) are connected to the disc body (9) via pins (10); a guide cylinder (6b) is arranged on the flange plate (6a); the upper half of the end surface of the guide cylinder (6b) is provided with a yielding inclined surface (6c); the lower half of the end surface of the guide cylinder (6b) is arranged as a straight surface (6d); When the disc body (9) rotates around the pin shaft (10) and abuts against the yielding inclined surface (6c) of the guide cylinder (6b), the rectangular hole in the center of the disc body (9) and the rectangular block (5a) are staggered to form yielding; When the disc body (9) rotates around the pin shaft (10) and abuts against the flat surface (6d) of the guide cylinder (6b), the rectangular hole in the center of the disc body (9) forms a blocking limit for the rectangular block (5a); and the flat surface (6d) of the guide cylinder (6b) and the end surface of the disc body (9) are slidably matched.

5. A rotating rod device for facilitating installation of lithium-ion battery rolls as claimed in claim 4, characterized in that: A vertical limiting steel ball mounting hole (9a) is provided on the disc body (9); a spherical concave pit (4d) is provided on the top surface of one side wall plate of the support groove (4a); a steel ball (11) and a spring (12) are sequentially installed in the limiting steel ball mounting hole (9a); a top screw (13) is installed at the mouth of the steel ball mounting hole (9a), one end of the spring (12) presses on the top screw (13), and the other end presses on the steel ball (11); when the disc body (9) rotates around the pin shaft (10) and abuts against the flat surface (6d) of the guide cylinder (6b), the steel ball (11) presses tightly against the spherical concave pit (4d).

6. A rotating rod device for facilitating installation of lithium-ion battery rolls as claimed in claim 1, characterized in that: Guide protrusions (4b) are respectively arranged on the tops of the two side wall plates of the support groove (4a), and guide inclined surfaces (4c) are arranged on the opposite surfaces of the two guide protrusions (4b).

7. A rotating rod device for facilitating installation of lithium-ion battery rolls as claimed in claim 1, characterized in that: The support rod assembly comprises a hollow tube body (3), and an inserting portion (5b) is arranged on the support head (5); the inserting portion (5b) is inserted into the central hole at the end of the tube body (3), and an anti-rotation pin (14) is inserted between the tube body (3) and the inserting portion (5b).

8. A rotating rod device for facilitating installation of lithium-ion battery rolls as claimed in claim 1, characterized in that: A seat plate (1a) is arranged at the bottom of the support plate (1), and anchor bolt holes are arranged at the four corners of the seat plate (1a).

9. A rotating rod device for facilitating installation of lithium-ion battery rolls as claimed in claim 2, characterized in that: The step surfaces at the journals at both ends of the rotating shaft (2) abut against the inner ring end surface of the bearing (7); an annular limit platform (6e) is provided in the inner hole of the bearing sleeve (6) and abuts against the outer ring of the bearing (7); the bearing (7) is a deep groove ball bearing.

10. A rotating rod device for facilitating installation of lithium-ion battery rolls as claimed in claim 9, characterized in that: An end cover (15) is provided at the outer end of the bearing sleeve (6) and is installed by screws; a sealing ring (16) is provided between the inner hole surface of the annular limit platform (6e) and the journal of the rotating shaft (2); and an oil injection hole (6f) is provided on the bearing sleeve (6).