Spherical hinge structure and electric actuating mechanism

Abstract

The utility model relates to a spherical hinge structure and an electric actuating mechanism, and relates to the technical field of boilers. The spherical hinge structure comprises a spherical hinge front end part, a screw rod part, a spherical hinge rear end part, a connecting assembly and a damping assembly, one end of the screw part is arranged on the front end part of the spherical hinge; the rear end part of the spherical hinge is in threaded connection with one end, far away from the front end part of the spherical hinge, of the screw rod; the connecting assembly is arranged on the screw rod part in a sleeving mode and located between the spherical hinge front end part and the spherical hinge rear end part, and an annular hollow area is formed between the inner wall of the connecting assembly and the screw rod; the damping assembly is arranged in the annular hollow area in a penetrating mode, and the damping assembly abuts against the inner wall of the connecting assembly and the screw rod part. According to the technical scheme disclosed by the utility model, the problems of vibration and unstable connection state at the joint of the existing spherical hinge and the connecting rod can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of boilers, in particular to a spherical hinge structure and an electric actuator. Background Art

[0002] The boiler flue damper mechanism is a valve in the boiler flue and is an important component used to adjust the boiler's supply air and induced air volume. The valve opening (boiler flue damper mechanism) is usually adjusted through an actuator. Electric actuators are a widely used type of actuator.

[0003] Electric actuators are characterized by low fluctuations and high stability during operation and adjustment. However, during medium- and long-term operation, problems such as excessive periodic flow, damper valve position jamming, and abnormal actuator rod vibration often occur. These can lead to significant fluctuations in boiler negative pressure, air pressure, and oxygen content. This not only affects the boiler's stable operation and environmental emission standards, but also causes increased boiler energy consumption and decreased thermal efficiency. Research has found that the cause of these problems is vibration at the connection between the electric actuator's ball hinge and the connecting rod, resulting in an unstable connection. Therefore, how to reduce this vibration at the connection has become an urgent issue. Utility Model Content

[0004] The embodiments of the present invention provide a spherical hinge structure and an electric actuator, which can solve the problems of vibration at the connection between the existing spherical hinge and the connecting rod and unstable connection state.

[0005] In a first aspect, an embodiment of the present invention provides a spherical hinge structure, comprising:

[0006] Ball hinge front end;

[0007] a screw portion, one end of which is disposed on the front end portion of the spherical hinge;

[0008] The rear end portion of the spherical hinge is threadedly connected to an end of the screw rod away from the front end portion of the spherical hinge;

[0009] a connecting assembly sleeved on the screw portion and located between the front end portion of the spherical hinge and the rear end portion of the spherical hinge, with an annular hollow area being defined between the inner wall of the connecting assembly and the screw; and

[0010] The shock absorbing component is passed through the annular hollow area, and the shock absorbing component is respectively in contact with the inner wall of the connecting component and the screw portion.

[0011] In one embodiment, the shock absorbing assembly comprises:

[0012] a first buffer and shock-absorbing ring, sleeved on the screw portion, wherein the first buffer and shock-absorbing ring is partially inserted into the annular hollow area and abuts against the inner wall of the connecting assembly;

[0013] a second buffer and shock-absorbing ring, arranged opposite to the first buffer and shock-absorbing ring in the axial direction of the screw portion, the second buffer and shock-absorbing ring being sleeved on the screw portion and partially inserted into the annular hollow area, and the second buffer and shock-absorbing ring being in contact with the inner wall of the connecting assembly; and

[0014] The main shock-absorbing ring is sleeved on the screw portion, the inner wall of the main shock-absorbing ring is in contact with the screw portion, and the outer wall of the main shock-absorbing ring is in contact with the inner wall of the first buffer shock-absorbing ring, the inner wall of the second buffer shock-absorbing ring, and the inner wall of the connecting assembly respectively.

[0015] In one embodiment, the connecting assembly includes a first connecting portion located between the first buffer and shock-absorbing ring and the second buffer and shock-absorbing ring, wherein the annular hollow area is located between an inner wall of the first connecting portion and the screw.

[0016] In one embodiment, the first connecting portion includes:

[0017] A driver connection port is sleeved on the screw portion;

[0018] a spherical hinge end gasket, sleeved on the screw portion, with two sides of the spherical hinge end gasket respectively abutting against the driver connection port and the first buffer shock-absorbing ring; and

[0019] A driver connection port end gasket is sleeved on the screw portion, and two sides of the driver connection port end gasket are respectively in contact with the driver connection port and the second buffer shock-absorbing ring;

[0020] Wherein, the main shock-absorbing ring abuts against the inner wall of the gasket at the driver connection port end, the first buffer shock-absorbing ring abuts against the inner wall of the spherical hinge end gasket, and the second buffer shock-absorbing ring abuts against the inner wall of the gasket at the driver connection port end.

[0021] In one embodiment, the first buffer and shock absorbing ring and the second buffer and shock absorbing ring both include:

[0022] Main body ring;

[0023] an outer limiting ring segment, disposed on one side of the main body ring; and

[0024] An inner limiting ring segment is provided on one side of the main body ring, and the inner limiting ring segment is located inside the outer limiting ring segment;

[0025] Wherein, the inner limiting ring segment is arranged in the annular hollow area.

[0026] In one embodiment, the driver connection port is provided with a first limiting ring segment and a second limiting ring segment, the first limiting ring segment is coaxially arranged with the screw portion and is respectively located on both sides of the driver connection ring, the second limiting ring segment is coaxially arranged with the screw portion and is respectively located on both sides of the driver connection ring, and the second limiting ring segment is located inside the first limiting ring segment;

[0027] The outer limiting ring segment is located between the first limiting ring segment and the second limiting ring segment, and the spherical hinge end gasket and the driver connection port end gasket are both located between the second limiting ring segment and the inner limiting ring segment.

[0028] In one embodiment, the spherical hinge structure further includes a connecting rod bolt, which is passed through the first buffer shock-absorbing ring, the first connecting portion and the second buffer shock-absorbing ring to fix the shock-absorbing assembly to the first connecting portion.

[0029] In one embodiment, the connection assembly further includes a second connection portion, wherein the second connection portion includes:

[0030] a connecting rod, sleeved on the screw portion, the connecting rod being located between the second buffer and shock-absorbing ring and the rear end portion of the spherical hinge;

[0031] a reinforcing gasket, sleeved on the screw portion, with two sides of the reinforcing gasket respectively abutting against the second buffer shock-absorbing ring and the connecting rod;

[0032] The connecting rod end gasket is sleeved on the screw rod portion, and two sides of the connecting rod end gasket are respectively in contact with the connecting rod and the rear end portion of the spherical hinge.

[0033] In one embodiment, the main shock absorbing ring is a rubber shock absorbing ring.

[0034] In a second aspect, an embodiment of the present invention provides an electric actuator, comprising the spherical hinge structure as described above.

[0035] Compared with the prior art, the advantage of the embodiment of the present utility model is that by arranging the shock-absorbing component to pass through the annular hollow area, and the shock-absorbing component respectively abutting against the inner wall and the screw part of the connecting component, the shock-absorbing component fills the annular hollow area and reduces the gap between the connecting component and the screw, thereby playing a shock-absorbing role, absorbing and reducing abnormal vibrations during operation and adjustment, reducing abnormal fluctuations in boiler operating parameters, and while ensuring safe and stable operation, improving the thermal efficiency of the boiler, reducing operating costs, reducing inspection and maintenance costs, and extending the operating life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The present invention will be described in more detail below based on embodiments with reference to the accompanying drawings.

[0037] Figure 1 This is a structural diagram of a spherical hinge structure provided by an embodiment of the present utility model;

[0038] Figure 2 yes Figure 1 A schematic structural diagram of a shock absorbing assembly provided in the embodiment;

[0039] Figure 3 It is a structural diagram of an electric actuator in the prior art;

[0040] Figure 4 It is a structural diagram of the electric actuator in the prior art from another perspective;

[0041] Figure 5 It is a schematic diagram of the spherical hinge structure of the electric actuator in the prior art.

[0042] Reference numerals:

[0043] 1. Valve, 2. Actuator; 3. Ball hinge;

[0044] 10. Front end of spherical hinge;

[0045] 20. Screw part;

[0046] 30. Rear end of ball hinge;

[0047] 40. Connecting assembly; 410. First connecting portion; 4101. Driver connecting port; 4102. Spherical hinge end gasket; 4103. Driver connecting port end gasket; 4105. First limiting ring segment; 4106. Second limiting ring segment; 420. Second connecting portion; 4201. Connecting rod; 4202. Reinforcement gasket; 4203. Connecting rod end gasket;

[0048] 50. Shock-absorbing assembly; 510. First buffer and shock-absorbing ring; 5101. Main body ring; 5102. Outer limiting ring segment; 5103. Inner limiting ring segment; 520. Second buffer and shock-absorbing ring; 530. Main shock-absorbing ring.

[0049] 60. Connecting rod bolt. DETAILED DESCRIPTION

[0050] The present invention will be further described below with reference to the accompanying drawings.

[0051] The boiler flue damper mechanism is a valve in the boiler flue and is an important component used to adjust the boiler's supply air and induced air volume. The valve opening (boiler flue damper mechanism) is usually adjusted through an actuator. Electric actuators are a widely used type of actuator.

[0052] like Figure 3 、 Figure 4 As shown, the electric actuator includes an actuator 2 and a connecting rod 4201. The position transmitter is a position sending device of the electric actuator and is used to reflect the opening of the valve 1 (boiler flue damper mechanism). One end of the connecting rod 4201 is connected to the valve 1 (boiler flue damper mechanism) through a spherical hinge 3, and the other end is hinged to the actuator 2 through a spherical hinge 3. The actuator 2 includes a motor, a reducer and a position transmitter. The position transmitter is a position sending device of the electric actuator and is used to reflect the opening of the valve 1 (boiler flue damper mechanism). The actuator 2 is used to convert electrical energy into mechanical energy, drive the spherical hinge 3 to drive the connecting rod 4201 to move, and achieve the purpose of changing the opening of the valve 1.

[0053] Electric actuators have the characteristics of small fluctuations and high stability during operation and adjustment. However, in the medium and long-term operation process, problems such as excessive period quantity, damper valve position jamming, and abnormal vibration of the actuator rod often occur, resulting in large changes in boiler negative pressure, wind pressure, and oxygen content. This not only affects the stable operation of the boiler and environmental protection emission standards, but also causes increased boiler energy consumption and decreased thermal efficiency. Research has found that the cause of the above problems is the vibration of the connection between the ball hinge of the electric actuator and the connecting rod 4201, and the unstable connection state. Specifically, Figure 5 As shown, the spherical hinge includes a spherical hinge front end 10, a spherical hinge middle end, a spherical hinge rear end 30, and a screw. One end of the screw is connected to the spherical hinge front end 10 and the other end is threadedly connected to the spherical hinge rear end 30. The spherical hinge middle end is sleeved on the screw and located between the spherical hinge front end 10 and the spherical hinge rear end 30. The spherical hinge middle end includes a spherical hinge end gasket 4102, a driver connection port 4101, a driver connection port end gasket 4103, a connecting rod 4201, and a connecting rod end gasket 4203. However, due to the large gap between the spherical hinge middle end and the screw, the screw will continuously move in the hollow area during operation, thereby generating vibration. Therefore, how to reduce the vibration of the connection has become an urgent problem that needs to be solved.

[0054] Example 1

[0055] like Figure 1As shown, in order to solve the above technical problems, an embodiment of the present invention provides a spherical hinge structure, including a spherical hinge front end 10, a screw portion 20, a spherical hinge rear end 30, a connecting assembly 40 and a shock-absorbing assembly 50; one end of the screw portion 20 is arranged on the spherical hinge front end 10; the spherical hinge rear end 30 is threadedly connected to an end of the screw away from the spherical hinge front end 10; the connecting assembly 40 is sleeved on the screw portion 20 and is located between the spherical hinge front end 10 and the spherical hinge rear end 30, and an annular hollow area is provided between the inner wall of the connecting assembly 40 and the screw; the shock-absorbing assembly 50 is penetrated into the annular hollow area, and the shock-absorbing assembly 50 is respectively abutted against the inner wall of the connecting assembly 40 and the screw portion 20.

[0056] As can be seen from the above, by arranging the shock-absorbing component 50 to pass through the annular hollow area, and the shock-absorbing component 50 respectively abuts against the inner wall of the connecting component 40 and the screw part 20, the shock-absorbing component 50 fills the annular hollow area and reduces the gap between the connecting component 40 and the screw, thereby playing a shock-absorbing role, absorbing and reducing abnormal vibrations during operation and adjustment, reducing abnormal fluctuations in boiler operating parameters, and ensuring safe and stable operation while improving the thermal efficiency of the boiler, reducing operating costs, reducing inspection and maintenance costs, and extending the operating life of the equipment.

[0057] It should be noted that the spherical hinge front end portion 10 and the spherical hinge rear end portion 30 are both semicircular spheres, and the spherical hinge front end portion 10, the spherical hinge rear end portion 30 and the screw portion 20 are coaxially arranged.

[0058] It should also be noted that the screw portion 20 and the spherical hinge front end portion 10 are connected to each other including but not limited to by integral molding with a mold or welding.

[0059] Example 2

[0060] like Figure 1 As shown, the spherical hinge structure includes a spherical hinge front end 10, a screw portion 20, a spherical hinge rear end 30, a connecting assembly 40 and a shock-absorbing assembly 50; one end of the screw portion 20 is arranged on the spherical hinge front end 10; the spherical hinge rear end 30 is threadedly connected to an end of the screw away from the spherical hinge front end 10; the connecting assembly 40 is sleeved on the screw portion 20 and is located between the spherical hinge front end 10 and the spherical hinge rear end 30, and an annular hollow area is provided between the inner wall of the connecting assembly 40 and the screw; the shock-absorbing assembly 50 is penetrated into the annular hollow area, and the shock-absorbing assembly 50 is respectively abutted against the inner wall of the connecting assembly 40 and the screw portion 20.

[0061] As can be seen from the above, by arranging the shock-absorbing component 50 to pass through the annular hollow area, and the shock-absorbing component 50 respectively abuts against the inner wall of the connecting component 40 and the screw part 20, the shock-absorbing component 50 fills the annular hollow area and reduces the gap between the connecting component 40 and the screw, thereby playing a shock-absorbing role, absorbing and reducing abnormal vibrations during operation and adjustment, reducing abnormal fluctuations in boiler operating parameters, and ensuring safe and stable operation while improving the thermal efficiency of the boiler, reducing operating costs, reducing inspection and maintenance costs, and extending the operating life of the equipment.

[0062] It should be noted that the spherical hinge front end portion 10 and the spherical hinge rear end portion 30 are both semicircular spheres, and the spherical hinge front end portion 10, the spherical hinge rear end portion 30 and the screw portion 20 are coaxially arranged.

[0063] It should also be noted that the screw portion 20 and the spherical hinge front end portion 10 are connected to each other including but not limited to by integral molding with a mold or welding.

[0064] like Figure 1 As shown, in some embodiments, the shock absorbing assembly 50 includes a first buffer shock absorbing ring 510, a second buffer shock absorbing ring 520 and a main shock absorbing ring 530; the first buffer shock absorbing ring 510 is sleeved on the screw portion 20, the first buffer shock absorbing ring 510 is partially inserted into the annular hollow area, and the first buffer shock absorbing ring 510 is in contact with the inner wall of the connecting assembly 40; the second buffer shock absorbing ring 520 and the first buffer shock absorbing ring 510 are aligned in the axial direction of the screw portion 20. In terms of the setting, the second buffer and shock-absorbing ring 520 is sleeved on the screw part 20 and partially inserted into the annular hollow area, and the second buffer and shock-absorbing ring 520 is in contact with the inner wall of the connecting component 40; the main shock-absorbing ring 530 is sleeved on the screw part 20, and the inner wall of the main shock-absorbing ring 530 is in contact with the screw part 20, and the outer wall of the main shock-absorbing ring 530 is in contact with the inner wall of the first buffer and shock-absorbing ring 510, the inner wall of the second buffer and shock-absorbing ring 520, and the inner wall of the connecting component 40 respectively.

[0065] By providing the first buffer shock-absorbing ring 510 and the second buffer shock-absorbing ring 520, not only the gap between the connecting component 40 and the screw can be reduced, but also the driver connecting port 4101 and the connecting rod 4201 of the connecting component 40 can be limited to prevent their positions from changing.

[0066] It should be noted that the first buffer and shock-absorbing ring 510 and the second buffer and shock-absorbing ring 520 are made of steel.

[0067] like Figure 1 As shown, in some embodiments, the connecting assembly 40 includes a first connecting portion 410 located between a first buffer and shock absorbing ring 510 and a second buffer and shock absorbing ring 520 , wherein the annular hollow area is located between the inner wall of the first connecting portion 410 and the screw.

[0068] like Figure 1 As shown, in some embodiments, the first connecting portion 410 includes a driver connecting port 4101, a spherical hinge end gasket 4102, and a driver connecting port end gasket 4103; the driver connecting port 4101 is sleeved on the screw portion 20; the spherical hinge end gasket 4102 is sleeved on the screw portion 20, and the two sides of the spherical hinge end gasket 4102 are respectively in contact with the driver connecting port 4101 and the first buffer shock absorbing ring 510; the driver connecting port end gasket The sheet 4103 is sleeved on the screw portion 20, and the two sides of the driver connection port end gasket 4103 are respectively in contact with the driver connection port 4101 and the second buffer shock-absorbing ring 520; among them, the main shock-absorbing ring 530 is in contact with the inner wall of the driver connection port end gasket 4103, the first buffer shock-absorbing ring 510 is in contact with the inner wall of the spherical hinge end gasket 4102, and the second buffer shock-absorbing ring 520 is in contact with the inner wall of the driver connection port end gasket 4103.

[0069] By installing spherical hinge end gaskets 4102 and driver connection end gaskets 4103 on either side of driver connection port 4101, they prevent loosening and vibration, ensuring stability and safety. Because the spacing between spherical hinge end gaskets 4102, driver connection end gaskets 4103, driver connection port 4101, and screw portion 20 is different, the split structure of the main shock-absorbing ring 530, the first buffer shock-absorbing ring 510, and the second buffer shock-absorbing ring 520 together fill the gap between the first connection portion 410 and the screw. This not only facilitates installation and avoids interference, but also ensures sufficient filling and a good shock-absorbing effect.

[0070] It should be noted that the inner diameter of the spherical hinge end gasket 4102 is identical to the inner and outer diameters of the driver connection port gasket 4103; the aperture of the driver connection port 4101 is larger than the inner diameter of the spherical hinge end gasket 4102. Therefore, the main shock-absorbing ring 530 includes a first shock-absorbing section and second shock-absorbing sections disposed at both ends of the first shock-absorbing section. The outer diameter of the first shock-absorbing section is larger than that of the second shock-absorbing section. The first shock-absorbing section is located between the driver connection port 4101 and the screw portion 20, one of the second shock-absorbing sections is located between the driver connection port gasket 4103 and the screw portion 20, and the other second shock-absorbing section is located between the spherical hinge end gasket 4102 and the screw portion 20.

[0071] It should also be noted that if Figure 3 、 Figure 4 As shown, driver connection ports 4101 are respectively provided at both ends of the connecting rod 4201, and both are connected to the driver connection port 4101 through a spherical hinge structure. One end of the driver connection port 4101 away from the connecting rod 4201 is connected to the actuator 2, thereby driving the connecting rod 4201 to rotate, and the other end of the driver connection port 4101 away from the connecting rod 4201 is connected to the valve 1 (boiler flue damper mechanism).

[0072] It should also be noted that the spherical hinge end gasket 4102 and the driver connection end gasket 4103 are metal gaskets.

[0073] like Figure 2 As shown, in some embodiments, the first buffer shock-absorbing ring 510 and the second buffer shock-absorbing ring 520 both include a main body ring 5101, an outer limiting ring segment 5102 and an inner limiting ring segment 5103; the outer limiting ring segment 5102 is arranged on one side of the main body ring 5101; the inner limiting ring segment 5103 is arranged on one side of the main body ring 5101, and the inner limiting ring segment 5103 is located inside the outer limiting ring segment 5102; wherein, the inner limiting ring segment 5103 is passed through the annular hollow area.

[0074] By providing an inner limiting ring segment 5103 extending through the annular hollow area, the outer wall of the inner limiting ring segment 5103 of the first buffer and shock-absorbing ring 510 abuts the inner wall of the spherical hinge end gasket 4102, and the outer wall of the inner limiting ring segment 5103 of the second buffer and shock-absorbing ring 520 abuts the inner wall of the driver connection port end gasket 4103, thereby reducing the gap. In addition, the outer limiting ring segment 5102 of the first buffer and shock-absorbing ring 510 cooperates with the driver connection port 4101 to limit the driver connection port 4101 and the spherical hinge end gasket 4102, preventing their position from shifting. At the same time, the outer limiting ring segment 5102 of the second buffer and shock-absorbing ring 520 cooperates with the driver connection port 4101 to limit the driver connection port 4101 and the driver connection port end gasket 4103, preventing their position from shifting.

[0075] It should be noted that the two sides of the main ring 5101 of the first buffer shock-absorbing ring 510 are respectively in contact with the front end 10 of the spherical hinge and the spherical hinge end gasket 4102, and the end of the inner limit ring segment 5103 away from the main ring 5101 is in contact with the driver connection port 4101.

[0076] It should also be noted that the two sides of the main ring 5101 of the second buffer shock-absorbing ring 520 are respectively abutted against the clamping gasket and the driver connection port end gasket 4103, and the end of the inner limit ring segment 5103 away from the main ring 5101 is abutted against the driver connection port 4101.

[0077] In some embodiments, a first limiting ring segment 4105 and a second limiting ring segment 4106 are provided on the driver connecting port 4101. The first limiting ring segment 4105 is coaxially arranged with the screw portion 20 and is respectively located on both sides of the driver connecting ring. The second limiting ring segment 4106 is coaxially arranged with the screw portion 20 and is respectively located on both sides of the driver connecting ring. The second limiting ring segment 4106 is located inside the first limiting ring segment 4105; wherein, the outer limiting ring segment 5102 is located between the first limiting ring segment 4105 and the second limiting ring segment 4106, and the spherical hinge end gasket 4102 and the driver connecting port end gasket 4103 are both located between the second limiting ring segment 4106 and the inner limiting ring segment 5103.

[0078] The first limiting ring segment 4105, the second limiting ring segment 4106 cooperate with the outer limiting segment to limit the driver connection port 4101, and the second limiting ring segment 4106 cooperates with the inner limiting ring segment 5103 to provide an installation position for the spherical hinge end gasket 4102 and the driver connection port end gasket 4103, thereby playing a limiting role.

[0079] like Figure 1 As shown, in some embodiments, the spherical hinge structure further includes a connecting rod bolt 60, which is passed through the first buffer shock-absorbing ring 510, the first connecting portion 410 and the second buffer shock-absorbing ring 520 to fix the shock-absorbing assembly 50 to the first connecting portion 410.

[0080] The connecting rod bolt 60 is provided to reinforce and position the entire structure. The connecting rod bolt 60 is used to integrate the first buffer and shock-absorbing ring 510, the first connecting portion 410 and the second buffer and shock-absorbing ring 520 into a whole, ensuring that the position of the driver connecting port 4101 does not change.

[0081] It should be noted that the connecting rod bolt 60 includes a bolt body and a nut threadedly connected to the bolt body.

[0082] like Figure 1 As shown, in some embodiments, the connecting assembly 40 also includes a second connecting part 420, and the second connecting part 420 includes a connecting rod 4201, a reinforcement gasket 4202 and a connecting rod end gasket 4203; the connecting rod 4201 is sleeved on the screw rod part 20, and the connecting rod 4201 is located between the second buffer shock-absorbing ring 520 and the rear end part 30 of the spherical hinge; the reinforcement gasket 4202 is sleeved on the screw rod part 20, and the two sides of the reinforcement gasket 4202 are respectively abutted against the second buffer shock-absorbing ring 520 and the connecting rod 4201; the connecting rod end gasket 4203 is sleeved on the screw rod part 20, and the two sides of the connecting rod end gasket 4203 are respectively abutted against the connecting rod 4201 and the rear end part 30 of the spherical hinge.

[0083] By arranging connecting rod end gaskets 4203 and reinforcement gaskets 4202 on both sides of the connecting rod 4201, the functions of preventing loosening and vibration are achieved, thereby ensuring stability and safety; by arranging the reinforcement gasket 4202, an installation position is reserved for the nut of the connecting rod bolt 60 in the axial direction to avoid interference and friction on the equipment; at the same time, the compactness of the overall structure is ensured.

[0084] It should be noted that the distance between the connecting rod bolt 60 and the screw portion 20 is L1, the radius of the connecting rod end gasket 4203 is R1, and L1>R1, thereby reserving an installation position for the nut of the connecting rod bolt 60.

[0085] In some embodiments, the main shock-absorbing ring 530 is a rubber shock-absorbing ring.

[0086] By setting up a rubber shock-absorbing ring to absorb vibrations and reserve a vibration margin, the tiny vibrations generated during daily operation can be released through the rubber shock-absorbing ring.

[0087] Example 3

[0088] The embodiment of the present invention further provides an electric actuator, comprising the spherical hinge structure of any embodiment of the present invention, thereby having all the technical effects brought about by the technical solutions of the above embodiments.

[0089] While the present invention has been described with reference to preferred embodiments, various modifications may be made and equivalent components may be substituted without departing from the scope of the present invention. In particular, the various technical features described in the various embodiments may be combined in any manner, provided no structural conflicts exist. The present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A spherical hinge structure, characterized in that: include: Ball hinge front end; a screw portion, one end of which is disposed on the front end portion of the spherical hinge; The rear end portion of the spherical hinge is threadedly connected to an end of the screw rod away from the front end portion of the spherical hinge; a connecting assembly sleeved on the screw portion and located between the front end portion of the spherical hinge and the rear end portion of the spherical hinge, with an annular hollow area being defined between the inner wall of the connecting assembly and the screw; and The shock absorbing component is passed through the annular hollow area, and the shock absorbing component is respectively in contact with the inner wall of the connecting component and the screw portion.

2. The spherical hinge structure according to claim 1, characterized in that: The shock absorbing assembly comprises: a first buffer and shock-absorbing ring, sleeved on the screw portion, wherein the first buffer and shock-absorbing ring is partially inserted into the annular hollow area and abuts against the inner wall of the connecting assembly; a second buffer and shock-absorbing ring, arranged opposite to the first buffer and shock-absorbing ring in the axial direction of the screw portion, the second buffer and shock-absorbing ring being sleeved on the screw portion and partially inserted into the annular hollow area, and the second buffer and shock-absorbing ring being in contact with the inner wall of the connecting assembly; and The main shock-absorbing ring is sleeved on the screw portion, the inner wall of the main shock-absorbing ring is in contact with the screw portion, and the outer wall of the main shock-absorbing ring is in contact with the inner wall of the first buffer shock-absorbing ring, the inner wall of the second buffer shock-absorbing ring, and the inner wall of the connecting assembly respectively.

3. The spherical hinge structure according to claim 2, characterized in that: The connecting assembly includes a first connecting portion located between the first buffer and shock-absorbing ring and the second buffer and shock-absorbing ring, wherein the annular hollow area is located between the inner wall of the first connecting portion and the screw.

4. The spherical hinge structure according to claim 3, characterized in that: The first connecting portion includes: A driver connection port is sleeved on the screw portion; a spherical hinge end gasket, sleeved on the screw portion, with two sides of the spherical hinge end gasket respectively abutting against the driver connection port and the first buffer shock-absorbing ring; and A driver connection port end gasket is sleeved on the screw portion, and two sides of the driver connection port end gasket are respectively in contact with the driver connection port and the second buffer shock-absorbing ring; Wherein, the main shock-absorbing ring abuts against the inner wall of the gasket at the driver connection port end, the first buffer shock-absorbing ring abuts against the inner wall of the spherical hinge end gasket, and the second buffer shock-absorbing ring abuts against the inner wall of the gasket at the driver connection port end.

5. The spherical hinge structure according to claim 4, characterized in that: The first buffer and shock absorbing ring and the second buffer and shock absorbing ring both include: Main body ring; an outer limiting ring segment, disposed on one side of the main body ring; and An inner limiting ring segment is provided on one side of the main body ring, and the inner limiting ring segment is located inside the outer limiting ring segment; Wherein, the inner limiting ring segment is arranged in the annular hollow area.

6. The spherical hinge structure according to claim 5, characterized in that: The driver connection port is provided with a first limiting ring segment and a second limiting ring segment, the first limiting ring segment is coaxially arranged with the screw portion and is respectively located on both sides of the driver connection ring, the second limiting ring segment is coaxially arranged with the screw portion and is respectively located on both sides of the driver connection ring, and the second limiting ring segment is located inside the first limiting ring segment; The outer limiting ring segment is located between the first limiting ring segment and the second limiting ring segment, and the spherical hinge end gasket and the driver connection port end gasket are both located between the second limiting ring segment and the inner limiting ring segment.

7. The spherical hinge structure according to any one of claims 3 to 6, characterized in that: The spherical hinge structure further includes a connecting rod bolt, which is passed through the first buffer shock-absorbing ring, the first connecting portion and the second buffer shock-absorbing ring to fix the shock-absorbing assembly to the first connecting portion.

8. The spherical hinge structure according to any one of claims 2 to 7, characterized in that: The connecting assembly further includes a second connecting portion, the second connecting portion including: a connecting rod, sleeved on the screw portion, the connecting rod being located between the second buffer and shock-absorbing ring and the rear end portion of the spherical hinge; a reinforcing gasket, sleeved on the screw portion, with two sides of the reinforcing gasket respectively abutting against the second buffer shock-absorbing ring and the connecting rod; The connecting rod end gasket is sleeved on the screw rod portion, and two sides of the connecting rod end gasket are respectively in contact with the connecting rod and the rear end portion of the spherical hinge.

9. The spherical hinge structure according to any one of claims 2 to 7, characterized in that: The main shock-absorbing ring is a rubber shock-absorbing ring.

10. An electric actuator, characterized in that: The invention comprises a spherical hinge structure as claimed in any one of claims 1 to 9.

Images