Rotor pressing ring

Abstract

The utility model discloses a rotor pressing ring, which comprises a pressing ring, a rotating shaft arranged on the inner side of the pressing ring, and a heat dissipation device arranged on the pressing ring, the heat dissipation device comprises fan blades, ventilation slots, a fixing table and heat dissipation holes, the fan blades are arranged on the side wall of the fixing table, the fixing table is arranged on the inner side of the pressing ring, the heat dissipation holes are arranged on the pressing ring, and the ventilation slots are arranged on the side wall of the pressing ring. A fixing device is installed on one side of the fixing table and comprises a fixing plate, a limiting sleeve, a rotating rod, an inserting sleeve, a reducing groove, a clamping block, a clamping groove and a positioning groove, the inserting sleeve is arranged on one side of the pressing ring, the limiting sleeve is installed in the inserting sleeve, the rotating rod is installed in the limiting sleeve, the clamping groove is formed in the inner side of the inserting sleeve, the clamping block is clamped in the clamping groove, and the fixing plate is installed on one side of the limiting sleeve. According to the novel pressure ring, the function is complete, and the problems of an existing pressure ring in the aspects of heat dissipation, fan mounting and dismounting and the like are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of motor accessories, and more specifically, to a rotor pressing ring. Background Art

[0002] In the field of modern motor manufacturing and application, the rotor pressing ring, as one of the key components of the motor rotor, plays a vital role in fixing the rotor core, transmitting torque, balancing the rotor, etc. However, the rotor pressing ring in the prior art still has some shortcomings in structural design and heat dissipation performance, which affects the reliability and service life of the motor. First of all, the structure of the existing rotor pressing ring is relatively simple, usually adopting an integrated ring structure, and the material is mostly metal materials such as aluminum alloy or stainless steel. Although this structure has certain strength and rigidity, its performance in heat dissipation is relatively poor. Since the motor generates a lot of heat during operation, especially under high speed and heavy load conditions, the rotor temperature will rise sharply. The simple pressing ring structure lacks effective heat dissipation channels and heat dissipation areas, and the heat is difficult to dissipate in time, which can easily lead to excessive rotor temperature, accelerate the aging of insulation materials, and even cause serious consequences such as motor burning.

[0003] Secondly, in order to solve the problem of insufficient heat dissipation of the rotor pressure ring, some existing devices are equipped with fans to assist in heat dissipation. The fan accelerates the heat exchange on the surface of the pressure ring through forced convection, takes away heat and reduces the rotor temperature. However, during the installation of the fan, special tools such as screwdrivers and wrenches are usually required to achieve a reliable connection between the fan and the pressure ring. This installation method is not only complicated to operate, but also inefficient and requires a lot of time and manpower. Especially in mass production and assembly, the low installation efficiency will affect the progress of the entire production process and increase production costs.

[0004] In addition, during the disassembly process of the fan, the prior art also has some shortcomings. Since the fan and the pressure ring are usually connected by fasteners, such as screws and rivets, corresponding tools, such as screwdrivers and pliers, are required for disassembly. This disassembly method is not only inefficient, but also easily causes damage to the fan and the pressure ring. During the disassembly process, a large external force needs to be applied, which can easily lead to problems such as fastener stripping, fan blade deformation, and scratches on the pressure ring surface, affecting the reuse and reliability of the components. Summary of the invention

[0005] In view of the problems existing in the prior art, the utility model provides a rotor pressing ring to solve the technical problems mentioned in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rotor pressure ring, comprising a pressure ring, a rotating shaft is provided on the inner side of the pressure ring, a heat dissipation device is provided on the pressure ring, the heat dissipation device comprises fan blades, ventilation grooves, a fixing platform and heat dissipation holes, the fan blades are arranged on the side wall of the fixing platform, the fixing platform is detachably installed on the inner side of the pressure ring, the heat dissipation holes are arranged on the pressure ring, the ventilation grooves are arranged on the side wall of the pressure ring, a fixing device is installed on one side of the fixing platform, the fixing device comprises a fixing plate, a limiting sleeve, a rotating rod, a plug-in sleeve, a reducing groove, a block, a slot and a positioning groove, the plug-in sleeve is fixedly arranged on one side of the pressure ring, the limiting sleeve is detachably installed in the plug-in sleeve, the rotating rod is movably installed in the limiting sleeve, the slot is arranged on the inner side of the plug-in sleeve, the block is engaged in the slot, the fixing plate is installed on one side of the limiting sleeve, the reducing groove is arranged on the side wall of the rotating rod, the positioning groove is arranged on the side wall of the rotating rod, and the other end of the block is engaged in the positioning groove, and a quick release mechanism is arranged in the limiting sleeve.

[0007] The utility model is further configured that a cooling jacket is provided in the heat dissipation hole, and a cooling plate is provided on one side of the cooling jacket.

[0008] The utility model is further configured that a limit block is provided on the outer side of the rotating shaft, and limit grooves are correspondingly provided on the inner sides of the fixing platform and the pressure ring, and the limit block and the limit groove are matched.

[0009] The utility model is further configured that a second spring is provided inside the clamping block, the other end of the second spring is in contact with the inner wall of the limiting sleeve, and the configuration of the second spring makes the operation of the device more stable.

[0010] The utility model is further configured that a handle is provided on one layer of the fixing plate, and the handle is fixedly mounted on one side of the fixing plate. The configuration of the handle facilitates the use of the fixing plate and the limiting sleeve.

[0011] The utility model is further configured as follows: the quick-release mechanism includes an unlocking rod, a guide plate and a guide groove; the unlocking rod can be movably installed above the rotating rod; the guide plate is arranged at the bottom end of the unlocking rod; the guide groove is opened on the side wall of the rotating rod; and the guide plate is adapted to the guide groove; the quick-release structure can realize quick and easy disassembly of the fan.

[0012] The utility model is further configured such that a slide bar is provided on the outer side of the unlocking rod, and a slide groove is correspondingly provided on the inner side of the limiting sleeve, the slide bar is adapted to the slide groove, and the configuration of the slide bar and the slide groove prevents the unlocking rod from rotating.

[0013] The utility model is further configured that a first spring is provided below the unlocking rod, the other end of the first spring is connected to the top end of the rotating rod, and the provision of the first spring facilitates the automatic resetting of the unlocking rod.

[0014] Compared with the prior art, the utility model provides a rotor pressing ring, which has the following beneficial effects:

[0015] 1. The heat dissipation device includes components such as fan blades, ventilation slots, a fixing platform and heat dissipation holes. By arranging heat dissipation holes and ventilation slots on the pressing ring and installing fan blades on the fixing platform, multi-channel and high-efficiency heat dissipation is achieved. The cooling sleeve and cooling plate arranged in the heat dissipation holes can quickly conduct the heat inside the motor to the outside, expand the heat dissipation area, and improve the heat dissipation effect. The design of the ventilation slots can form natural ventilation when the rotor rotates, take away the heat and reduce the temperature. The setting of the fan blades can accelerate the heat dissipation through forced convection when the motor temperature is too high, ensuring that the motor is within a safe operating temperature range. Compared with the traditional simple pressing ring structure, the heat dissipation device adopts a clever combination of multiple heat dissipation methods and components, starting from multiple angles such as conduction, convection, and radiation, which significantly improves the heat dissipation performance of the pressing ring and extends the service life of the motor.

[0016] 2. The fixing device includes a fixing plate, a limiting sleeve, a rotating rod, a plug-in sleeve, a reducing groove, a clamping block, a clamping slot and a positioning groove. Through the rotational cooperation between the rotating rod and the limiting sleeve, and the clamping connection between the clamping block and the clamping slot and the positioning groove, the fast installation and disassembly between the fixing platform and the pressure ring is realized. This design is not only simple to operate, but also does not require any tools, which greatly improves the assembly and maintenance efficiency. At the same time, the setting of the second spring can ensure the continuous and reliable engagement between the clamping block and the clamping slot to prevent loosening; the design of the positioning groove can prevent the rotating rod from rotating accidentally, thereby improving the stability and safety of the connection. Compared with the traditional bolt connection method, the fixing device adopts a unique clamping and rotation structure to achieve tool-free, fast and reliable installation, which greatly facilitates production and maintenance work.

[0017] 3. The quick-release mechanism includes components such as an unlocking rod, a guide plate and a guide groove. The cooperation between the unlocking rod and the rotating rod realizes the quick unlocking and disassembly of the fixing device. The quick-release mechanism is easy to operate, requires little force, does not require tools, can be controlled with one hand, and is unlocked smoothly without causing damage to components. The setting of the slide bar and the slide groove can ensure the smooth movement and accurate positioning of the unlocking rod, thereby improving the convenience and reliability of disassembly. Compared with the traditional violent disassembly method, the quick-release mechanism adopts a sophisticated guide and transmission structure to achieve smooth and controllable unlocking and disassembly, which not only improves efficiency, but also minimizes damage to the pressure ring and fan blades, thereby extending the service life of components. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a rotor pressure ring in the utility model;

[0019] Figure 2 for Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0020] Figure 3 This is a schematic diagram of the overall structure of the second angle in the utility model;

[0021] Figure 4 It is a cross-sectional structural diagram of the fixing device and the quick-release mechanism in the utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the fixing device and the quick-release mechanism in the utility model without the plug-in sleeve and the limit sleeve.

[0023] In the figure: 1. pressure ring; 2. rotating shaft; 3. fan blade; 4. ventilation slot; 5. fixing platform; 6. heat dissipation hole; 7. fixing plate; 8. limiting sleeve; 9. rotating rod; 10. plug-in sleeve; 11. reducing groove; 12. clamping block; 13. clamping slot; 14. positioning slot; 15. cooling sleeve; 16. cooling plate; 17. limiting block; 18. limiting slot; 19. second spring; 20. handle; 21. unlocking lever; 22. guide plate; 23. guide slot; 24. slide bar; 25. slide slot; 26. first spring. DETAILED DESCRIPTION

[0024] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0026] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0027] See also Figure 1-5A rotor pressing ring comprises a pressing ring 1, a rotating shaft 2 is arranged inside the pressing ring 1, a heat dissipation device is arranged on the pressing ring 1, the heat dissipation device comprises a fan blade 3, a ventilation groove 4, a fixing platform 5 and a heat dissipation hole 6, the fan blade 3 is arranged on the side wall of the fixing platform 5, the fixing platform 5 is detachably mounted on the inner side of the pressing ring 1, the heat dissipation hole 6 is opened on the pressing ring 1, the ventilation groove 4 is opened on the side wall of the pressing ring 1, a fixing device is installed on one side of the fixing platform 5, and the fixing device comprises a fixing plate 7, a limiting sleeve 8, a rotating rod 9, a plug sleeve 10, a reducing groove 11, a card The plug-in sleeve 10 is fixedly arranged on one side of the pressure ring 1, the limiting sleeve 8 is detachably installed in the plug-in sleeve 10, the rotating rod 9 is movably installed in the limiting sleeve 8, the slot 13 is arranged on the inner side of the plug-in sleeve 10, the card block 12 is engaged in the slot 13, the fixing plate 7 is installed on one side of the limiting sleeve 8, the reducing groove 11 is arranged on the side wall of the rotating rod 9, the positioning groove 14 is arranged on the side wall of the rotating rod 9, and the other end of the card block 12 is engaged in the positioning groove 14, and a quick release mechanism is arranged in the limiting sleeve 8.

[0028] A cooling jacket 15 is provided in the heat dissipation hole 6 , and a cooling plate 16 is provided on one side of the cooling jacket 15 .

[0029] A limit block 17 is disposed on the outer side of the rotating shaft 2 , and a limit groove 18 is correspondingly provided on the inner side of the fixing platform 5 and the pressing ring 1 , and the limit block 17 and the limit groove 18 are matched with each other.

[0030] A second spring 19 is disposed inside the clamping block 12 , and the other end of the second spring 19 contacts the inner wall of the limiting sleeve 8 .

[0031] A handle 20 is provided on one layer of the fixing plate 7 , and the handle 20 is fixedly installed on one side of the fixing plate 7 .

[0032] In this embodiment, when installing the device, the fan blade 3 is first installed on the side wall of the fixing platform 5, and then the mounting hole opened on the fixing platform 5 is aligned with the plug-in sleeve 10 set on one side of the pressure ring 1, and then the fixing plate 7 and the limiting sleeve 8 are ensured to be immobile, and the rotating rod 9 is rotated, and the rotating rod 9 will drive the reducing groove 11 to move. Due to the limitation of the side wall of the limiting sleeve 8, the block 12 will not rotate, and then one end of the block 12 will be separated from the positioning groove 14 and enter the reducing groove 11, and the Due to the special structural design of the variable diameter groove 11 and the characteristics of the second spring 19, one end of the block 12 will always fit with the side wall of the variable diameter groove 11, and the other end of the block 12 will gradually move inward. When the rotating rod 9 cannot rotate, the outer side of the block 12 is flush with the side wall of the limiting sleeve 8, and then the rotating rod 9 and the limiting sleeve 8 are inserted into the plug sleeve 10 through the fixing platform 5. When one side of the fixing plate 7 contacts the fixing platform 5, the block 12 will correspond to the position of the slot 13, and then the reverse rotation is achieved. The rotating rod 9 is moved to make one end of the block 12 re-engage in the positioning groove 14, and the second spring 19 is compressed again. The setting of the positioning groove 14 can ensure the stable engagement of the block 12 and the slot 13 to prevent the rotating rod 9 from rotating by itself. At the same time, the other end of the block 12 will extend out of the limiting sleeve 8 again and engage in the slot 13. Then the limiting groove 18 opened on the inner side of the pressing ring 1 and the fixing platform 5 is aligned with the limiting block 17 opened on the rotating shaft 2, and the pressing ring 1 and the fan are installed on the rotating shaft 2 as a whole. When the internal temperature of the motor is high, the heat can be dissipated through the heat dissipation holes 6, and then the internal temperature is conducted to the cooling plate 16 located outside through the cooling sleeve 15, thereby expanding the heat dissipation area. When the rotor rotates, self-ventilation cooling is realized, and the working efficiency of the motor is improved. When the internal temperature of the motor is too high, the fan is turned on, and the fixing platform 5 drives the fan blades 3 to rotate, thereby driving the air to flow through the ventilation slots 4, thereby realizing efficient heat dissipation inside the motor.

[0033] See also Figure 1-5 As a rotor pressing ring implementation method for the quick release mechanism: the quick release mechanism includes an unlocking lever 21, a guide plate 22 and a guide groove 23, the unlocking lever 21 is movably installed above the rotating rod 9, the guide plate 22 is arranged at the bottom end of the unlocking lever 21, the guide groove 23 is opened on the side wall of the rotating rod 9, and the guide plate 22 is adapted to the guide groove 23.

[0034] A slide bar 24 is disposed on the outer side of the unlocking rod 21 , and a slide groove 25 is correspondingly disposed on the inner side of the limiting sleeve 8 , and the slide bar 24 is matched with the slide groove 25 .

[0035] A first spring 26 is provided below the unlocking lever 21 , and the other end of the first spring 26 is connected to the top end of the rotating rod 9 .

[0036] More specifically, when the fan is damaged and needs to be disassembled and replaced, the fixing plate 7 and the limiting sleeve 8 are first fixed by the handle 20 provided on one side of the fixing plate 7 to prevent them from rotating, and then the unlocking rod 21 is pressed, and the unlocking rod 21 will compress the first spring 26, and at the same time the guide plate 22 will move downward. Due to the special structural design of the guide plate 22 and the guide groove 23, the rotating rod 9 will then rotate in the limiting sleeve 8. Due to the limitation of the slide bar 24 and the slide groove 25, the unlocking rod 21 will not rotate, and then the rotating rod 9 will drive the reducing groove 11 to rotate, and then one end of the block 12 will slide out of the positioning groove 14, and will compress the second spring 19 during the sliding out process. When the block After 12 slides from the positioning groove 14 into the reducing groove 11, the second spring 19 will reset. Due to the special structural design of the reducing groove 11 and the automatic reset feature of the second spring 19, when the reducing groove 11 rotates with the rotating rod 9, the second spring 19 will continue to reset, and make one side of the block 12 always keep in contact with the side wall of the reducing groove 11, and at the same time, the other end of the block 12 will gradually detach from the slot 13. When the unlocking rod 21 can no longer be pressed, the block 12 has completely detached from the slot 13, and then the handle 20 is pulled outward to make the limit sleeve 8 and the rotating rod 9 detach from the plug-in sleeve 10, and then the fan can be removed from one side of the pressure ring 1 for replacement.

[0037] In summary, when the overall device is in use or running: when installing the device, first install the fan blade 3 on the side wall of the fixed platform 5, then align the installation hole opened on the fixed platform 5 with the plug-in sleeve 10 set on one side of the pressure ring 1, and then ensure that the fixed plate 7 and the limiting sleeve 8 are not moved, rotate the rotating rod 9, and the rotating rod 9 will drive the reducing groove 11 to move. Due to the limitation of the side wall of the limiting sleeve 8, the block 12 will not rotate, and then one end of the block 12 will be separated from the positioning groove 14 and enter the variable diameter groove 11. In the diameter groove 11, due to the special structural design of the diameter-reducing groove 11 and the characteristics of the second spring 19, one end of the block 12 will always fit with the side wall of the diameter-reducing groove 11, and the other end of the block 12 will gradually move inward. When the rotating rod 9 cannot rotate, the outer side of the block 12 is flush with the side wall of the limiting sleeve 8, and then the rotating rod 9 and the limiting sleeve 8 are inserted into the plug-in sleeve 10 through the fixing platform 5. When one side of the fixing plate 7 contacts the fixing platform 5, the block 12 will correspond to the position of the slot 13, and then After that, the rotating rod 9 is rotated in the opposite direction, so that one end of the block 12 is re-engaged in the positioning groove 14, and the second spring 19 is compressed again. The setting of the positioning groove 14 can ensure the stable engagement of the block 12 and the slot 13 to prevent the rotating rod 9 from rotating by itself. At the same time, the other end of the block 12 will extend out of the limiting sleeve 8 again and be engaged with the slot 13. Then, the limiting groove 18 opened on the inner side of the pressing ring 1 and the fixing platform 5 is aligned with the limiting block 17 opened on the rotating shaft 2, and the pressing ring 1 and the fan are installed on the rotating shaft 2 as a whole. When the internal temperature of the motor is high, the heat can be dissipated through the heat dissipation holes 6, and then the internal temperature is conducted to the cooling plate 16 located outside through the cooling sleeve 15, thereby expanding the heat dissipation area. When the rotor rotates, self-ventilation cooling is realized, and the working efficiency of the motor is improved. When the internal temperature of the motor is too high, the fan is turned on, and the fixing platform 5 will drive the fan blades 3 to rotate, thereby driving the air to flow through the ventilation slots 4, thereby realizing efficient heat dissipation inside the motor.

[0038] When the fan is damaged and needs to be disassembled and replaced, the fixing plate 7 and the limiting sleeve 8 are first fixed by the handle 20 provided on one side of the fixing plate 7 to prevent them from rotating, and then the unlocking rod 21 is pressed, and the unlocking rod 21 will compress the first spring 26, and the guide plate 22 will move downward. Due to the special structural design of the guide plate 22 and the guide groove 23, the rotating rod 9 will rotate in the limiting sleeve 8. Due to the limitation of the sliding bar 24 and the sliding groove 25, the unlocking rod 21 will not rotate. Then the rotating rod 9 will drive the reducing groove 11 to rotate, and then one end of the block 12 will slide out of the positioning groove 14, and the second spring 19 will be compressed during the sliding out process. When the block 12 is After the positioning groove 14 slides into the reducing groove 11, the second spring 19 will reset. Due to the special structural design of the reducing groove 11 and the automatic reset feature of the second spring 19, when the reducing groove 11 rotates with the rotating rod 9, the second spring 19 will continue to reset, and make one side of the block 12 always keep in contact with the side wall of the reducing groove 11, and at the same time, the other end of the block 12 will gradually detach from the slot 13. When the unlocking rod 21 can no longer be pressed, the block 12 has completely detached from the slot 13, and then the handle 20 is pulled outward to make the limit sleeve 8 and the rotating rod 9 detach from the plug-in sleeve 10, and then the fan can be removed from one side of the pressure ring 1 for replacement.

[0039] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A rotor pressing ring, comprising a pressing ring (1), wherein a rotating shaft (2) is provided inside the pressing ring (1), and wherein: The pressing ring (1) is provided with a heat dissipation device, the heat dissipation device comprising a fan blade (3), a ventilation slot (4), a fixing platform (5) and a heat dissipation hole (6), the fan blade (3) is arranged on the side wall of the fixing platform (5), the fixing platform (5) is installed on the inner side of the pressing ring (1), the heat dissipation hole (6) is opened on the pressing ring (1), the ventilation slot (4) is opened on the side wall of the pressing ring (1), a fixing device is installed on one side of the fixing platform (5), the fixing device comprises a fixing plate (7), a limiting sleeve (8), a rotating rod (9), a plug sleeve (10), a reducing groove (11), A clamping block (12), a clamping slot (13) and a positioning slot (14); a plug sleeve (10) is arranged on one side of the pressure ring (1); a limiting sleeve (8) is installed in the plug sleeve (10); a rotating rod (9) is installed in the limiting sleeve (8); the clamping slot (13) is opened on the inner side of the plug sleeve (10); the clamping block (12) is engaged in the clamping slot (13); a fixing plate (7) is installed on one side of the limiting sleeve (8); a reducing slot (11) is opened on the side wall of the rotating rod (9); a positioning slot (14) is arranged on the side wall of the rotating rod (9); and a quick release mechanism is arranged in the limiting sleeve (8).

2. The rotor pressing ring according to claim 1 is characterized in that: A cooling jacket (15) is provided in the heat dissipation hole (6), and a cooling plate (16) is provided on one side of the cooling jacket (15).

3. The rotor pressing ring according to claim 2 is characterized in that: A limit block (17) is provided on the outer side of the rotating shaft (2), and a limit groove (18) is correspondingly provided on the inner side of the fixing platform (5) and the pressing ring (1), and the limit block (17) and the limit groove (18) are matched with each other.

4. The rotor pressing ring according to claim 1 is characterized in that: A second spring (19) is provided on the inner side of the clamping block (12), and the other end of the second spring (19) is in contact with the inner wall of the limiting sleeve (8).

5. The rotor pressing ring according to claim 4 is characterized in that: A handle (20) is provided on one layer of the fixing plate (7), and the handle (20) is fixedly mounted on one side of the fixing plate (7).

6. A rotor pressing ring according to any one of claims 1 to 5, characterized in that: The quick release mechanism comprises an unlocking rod (21), a guide plate (22) and a guide groove (23); the unlocking rod (21) is movably mounted above the rotating rod (9); the guide plate (22) is arranged at the bottom end of the unlocking rod (21); the guide groove (23) is formed on a side wall of the rotating rod (9); and the guide plate (22) is adapted to fit the guide groove (23).

7. The rotor pressing ring according to claim 6 is characterized in that: A slide bar (24) is provided on the outside of the unlocking rod (21), and a slide groove (25) is correspondingly provided on the inside of the limiting sleeve (8), and the slide bar (24) is adapted to fit the slide groove (25).

8. The rotor pressing ring according to claim 7 is characterized in that: A first spring (26) is provided below the unlocking rod (21), and the other end of the first spring (26) is connected to the top end of the rotating rod (9).

Images