Sealed electric actuator

Abstract

The utility model belongs to the technical field of electric actuators, and particularly relates to a sealed electric actuator which comprises an installation shell, a speed reducer installed in the installation shell, a motor fixing frame installed in the installation shell in a threaded connection mode, a motor installed on the inner side of the motor fixing frame and a supporting table installed on the inner side of the installation shell. The top of the supporting table is provided with a sealant groove and a second sealing groove, the top of the mounting shell is provided with a sealing shell, the bottom of the sealing shell is provided with a sealant groove matching ring plate and a second sealing ring plate, the bottom of the second sealing ring plate is provided with a sealing rubber strip, the side face of the mounting shell is provided with a mounting base, and the top of the mounting base is provided with a lead screw and a guide groove. A pressing block device is slidably installed on the guide groove, a rotary knob is arranged at the top of the lead screw, and a through hole is formed between the rotary knob and the bottom end of the lead screw in a penetrating mode, the sealing strength between the sealing shell and the installation shell can be improved, the sealing shell can be pressed, and the sealing stability is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to electric actuator technical field, concretely relates to a sealed electric actuator. BACKGROUND

[0002] Electric actuator is a kind of drive device that can provide linear or rotary motion, it uses certain driving energy and works under the action of certain control signal.This kind of actuator can use liquid, gas, electric power or other energy and be converted into driving action by motor, cylinder or other device.Its basic type has partial rotation, multiple rotation and straight stroke three driving modes, the shell of current electric actuator generally includes two sets of shell body, and the joint seam between the two sets of shell body is sealed by filling with sealing glue, plays the role of waterproof and dustproof, but in the long-time use process, because of the vibration of equipment operation, motor heating and other reasons, sealing glue is prone to delamination, which affects the sealing effect. SUMMARY

[0003] In view of the above problems, the utility model aims at providing a sealed electric actuator, which improves the sealing strength between the sealing shell and the mounting shell body through two sealing procedures, and can press the sealing shell, thereby improving the installation stability of the sealing shell and ensuring the close contact between the sealing shell and the mounting shell body, and effectively improving the sealing stability.

[0004] To achieve the above purpose, the utility model provides the following technical scheme: a sealed electric actuator, including mounting shell body, the inside of mounting shell body is installed with speed reducer, the inside of mounting shell body is screw-connected and installed with motor fixing frame, the inner side of motor fixing frame is installed with motor, the inner side of mounting shell body is installed with support table, the top of support table is equipped with sealing glue groove and two sealing grooves, the top of mounting shell body is equipped with sealing shell, the bottom of sealing shell is equipped with sealing glue groove matching ring plate and two sealing ring plates, the bottom of two sealing ring plates is equipped with sealing glue strip, the side of mounting shell body is installed with mounting seat, the top of mounting seat is installed with lead screw and guide groove, the guide groove is slidably installed with pressing block device, the top of lead screw is equipped with knob, the through hole is arranged between the bottom end of knob and lead screw, the mounting seat is equipped with screw hole in alignment with the through hole, the lock bolt is screw-connected through the through hole and the screw hole.

[0005] The utility model discloses beneficial effect is: utilize the sealing glue groove, sealing glue groove cooperation circle board and sealing glue cooperation, form first sealing, utilize two sealing circle board, two sealing groove and sealing glue strip's cooperation, form second sealing, through two sealing procedure, promote the sealing strength between sealing shell and installation shell, after sealing shell installation is finished, use knob rotation screw rod to drive outer pressure piece together with inner pressure piece and move down, when inner pressure piece and sealing shell contact, continue to rotate knob, make outer pressure piece continue to move down, until the bottom of outer pressure piece and the bottom plate of inner pressure piece contact, in this process, spring is compressed constantly, and a downward force is applied to inner pressure piece, to the pressing effect of sealing shell, and further improve the installation stability of sealing shell and guarantee the contact compactness between it and installation shell, effectively improve sealing stability.

[0006] In order to connect with the power input shaft of the equipment:

[0007] As a further improvement of the above technical solution: the installation shell is provided with an output shaft passing port, and the output shaft of the speed reducer passes through the output shaft passing port.

[0008] The beneficial effect of the improvement is that the output shaft of the speed reducer passes through the output shaft passing port to connect with the power input shaft of the equipment.

[0009] In order to seal between the output shaft passing port and the output shaft of the speed reducer:

[0010] As a further improvement of the above technical solution: a sealing element is installed between the output shaft passing port and the output shaft of the speed reducer.

[0011] The beneficial effect of the improvement is that the sealing element is used for sealing between the output shaft passing port and the output shaft of the speed reducer.

[0012] In order to output power:

[0013] As a further improvement of the above technical solution: the output shaft of the motor is connected with the input shaft of the speed reducer through a shaft coupling.

[0014] The beneficial effect of the improvement is that the output shaft of the motor drives the output shaft of the speed reducer to rotate, so as to output power through the output shaft of the speed reducer.

[0015] In order to form first sealing:

[0016] As a further improvement of the above technical solution: the sealing glue groove and the sealing glue groove cooperation circle board are filled with sealing glue.

[0017] The beneficial effect of the improvement is that the sealing glue groove, the sealing glue groove cooperation circle board and the sealing glue cooperate to form first sealing.

[0018] In order to play the pressing effect on the sealing shell:

[0019] As a further improvement of the above technical solution: the pressing block device comprises an outer pressing block, an inner pressing block is inserted and installed in the inner part of the outer pressing block, a spring is connected between the inner pressing block and the outer pressing block, and the lead screw is threadedly connected with the outer pressing block.

[0020] The improved beneficial effect is that the knob is used to rotate the lead screw to drive the outer pressing block to move downward together with the inner pressing block, when the inner pressing block contacts the sealing shell, the knob is continuously rotated to make the outer pressing block continuously move downward until the bottom of the outer pressing block contacts the bottom plate of the inner pressing block, in this process, the spring is continuously compressed to exert a downward force on the inner pressing block, thereby playing a pressing effect on the sealing shell.

[0021] In order to improve the stability of the locking bolt when locking:

[0022] As a further improvement of the above technical solution: the outer side of the knob is covered with a rubber anti-skid layer.

[0023] The improved beneficial effect is that the rubber anti-skid layer is used to improve the friction force, so as to facilitate the rotation and improve the stability of the locking bolt when locking.

[0024] In order to fix the knob:

[0025] As a further improvement of the above technical solution: a friction gasket is arranged between the hexagonal head of the locking bolt and the knob.

[0026] The improved beneficial effect is that after the hexagonal head of the locking bolt abuts against the knob, the friction gasket is used to fix the knob by the friction force between the friction gasket and the knob, so as to avoid the rotation of the knob with the lead screw.

[0027] The parts not involved in the device are the same as or can be realized by the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a right front axis measurement structure schematic diagram of the utility model.

[0029] Figure 2 It is a sectional view schematic diagram of the utility model.

[0030] Figure 3 It is a local section structure schematic diagram of the utility model.

[0031] Figure 4 It is a local sectional view schematic diagram of the utility model.

[0032] Figure 5 It is a bottom structure schematic diagram of the sealing shell in the utility model.

[0033] In the diagram: 1. Mounting housing; 2. Output shaft through port; 3. Reducer; 4. Friction pad; 5. Seal; 6. Motor mounting bracket; 7. Motor; 8. Support platform; 9. Sealing groove; 10. Second sealing groove; 11. Sealing shell; 12. Sealing groove mating ring plate; 13. Second sealing ring plate; 14. Sealing strip; 15. Mounting base; 16. Lead screw; 17. Guide groove; 18. Outer pressure block; 19. Inner pressure block; 20. Spring; 21. Knob; 22. Through hole; 23. Screw hole; 24. Locking bolt. Detailed Implementation

[0034] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0035] like Figures 1-5 As shown, a sealed electric actuator includes a mounting housing 1, a reducer 3 installed inside the mounting housing 1, a motor mounting bracket 6 screwed into the mounting housing 1, a motor 7 installed inside the motor mounting bracket 6, a support platform 8 installed inside the mounting housing 1, a sealing groove 9 and a second sealing groove 10 on the top of the support platform 8, a sealing shell 11 on the top of the mounting housing 1, and a sealing groove mating ring plate 12 and a second sealing ring plate 13 on the bottom of the sealing shell 11. The bottom of the second sealing ring plate 13 is provided with a sealing strip 14. The side of the mounting housing 1 is provided with a mounting base 15. The top of the mounting base 15 is provided with a lead screw 16 and a guide groove 17. A pressure block device is slidably installed on the guide groove 17. The top of the lead screw 16 is provided with a knob 21. A through hole 22 is provided between the knob 21 and the bottom end of the lead screw 16. The mounting base 15 is provided with a screw hole 23 aligned with the through hole 22. The locking bolt 24 passes through the through hole 22 and is threadedly connected to the screw hole 23.

[0036] The first seal is formed by the cooperation of the sealant groove 9, the sealant groove cooperation ring plate 12 and the sealant, the second seal is formed by the cooperation of the second seal ring plate 13, the second seal groove 10 and the sealant strip 14, and the sealing strength between the sealing shell 11 and the mounting shell 1 is improved through the two sealing procedures. After the sealing shell 11 is installed, the knob 21 is rotated to drive the outer pressing block 18 to move downward together with the inner pressing block 19. When the inner pressing block 19 contacts the sealing shell 11, the knob 21 is continuously rotated to make the outer pressing block 18 continue to move downward until the bottom of the outer pressing block 18 contacts the bottom plate of the inner pressing block 19. In this process, the spring 20 is continuously compressed to exert a downward force on the inner pressing block 19, thereby pressing the sealing shell 11, improving the installation stability of the sealing shell 11 and ensuring the close contact between the sealing shell 11 and the mounting shell 1, and effectively improving the sealing stability.

[0037] The mounting shell 1 is provided with an output shaft passing port 2, and the output shaft of the speed reducer 3 passes through the output shaft passing port 2.

[0038] The output shaft of the speed reducer 3 passes through the output shaft passing port 2 to be connected with the power input shaft of the equipment.

[0039] A sealing element 5 is installed between the output shaft passing port 2 and the output shaft of the speed reducer 3.

[0040] The sealing element 5 is used for sealing between the output shaft passing port 2 and the output shaft of the speed reducer 3.

[0041] The output shaft of the motor 7 is connected with the input shaft of the speed reducer 3 through a coupling.

[0042] The output shaft of the motor 7 drives the output shaft of the speed reducer 3 to rotate, so as to output power through the output shaft of the speed reducer 3.

[0043] The sealant groove 9 and the sealant groove cooperation ring plate 12 are filled with sealant.

[0044] The first seal is formed by the cooperation of the sealant groove 9, the sealant groove cooperation ring plate 12 and the sealant.

[0045] The pressing block device includes an outer pressing block 18, an inner pressing block 19 is inserted into the inner part of the outer pressing block 18, a spring 20 is connected between the inner pressing block 19 and the outer pressing block 18, and a lead screw 16 is threadedly connected with the outer pressing block 18.

[0046] The knob 21 is used to rotate the screw rod 16 to drive the outer pressing block 18 and the inner pressing block 19 to move downwards, when the inner pressing block 19 contacts with the sealing shell 11, the knob 21 is continuously rotated, the outer pressing block 18 continuously moves downwards until the bottom of the outer pressing block 18 contacts with the bottom plate of the inner pressing block 19, in this process, the spring 20 is continuously compressed to exert a downward force on the inner pressing block 19, thereby pressing the sealing shell 11.

[0047] The outer side of the knob 21 is covered with a rubber anti-skid layer.

[0048] The rubber anti-skid layer is used to improve the friction force, facilitate the rotation and improve the stability when the locking bolt 24 is locked.

[0049] The hexagonal bolt head of the locking bolt 24 is provided with a friction pad 4 between the knob 21.

[0050] After the hexagonal bolt head of the locking bolt 24 is tightly contacted with the knob 21, the friction pad 4 is used to fix the knob 21 by the friction force between the friction pad 4 and the knob 21, thereby avoiding the rotation of the knob 21 and the screw rod 16.

[0051] The working principle and use process of the utility model are as follows: when the utility model is used, after the motor 7 and the speed reducer 3 are installed, the sealing glue is filled into the sealing glue groove 9, the sealing glue groove 9 cooperation ring plate and the second sealing ring plate 13 on the sealing shell 11 are aligned with the sealing glue groove 9 and the second sealing groove 10 on the installation shell body 1 and are inserted, the sealing glue groove 9, the sealing glue groove cooperation ring plate 12 and the sealing glue cooperate to form the first sealing, the second sealing is formed by the cooperation of the second sealing ring plate 13, the second sealing groove 10 and the sealing glue strip 14, the sealing strength between the sealing shell 11 and the installation shell body 1 is improved by the two sealing procedures, after the sealing shell 11 is installed, the knob 21 is used to rotate the screw rod 16 to drive the outer pressing block 18 and the inner pressing block 19 to move downwards, when the inner pressing block 19 contacts with the sealing shell 11, the knob 21 is continuously rotated, the outer pressing block 18 continuously moves downwards until the bottom of the outer pressing block 18 contacts with the bottom plate of the inner pressing block 19, in this process, the spring 20 is continuously compressed to exert a downward force on the inner pressing block 19, thereby pressing the sealing shell 11, further improving the installation stability of the sealing shell 11 and ensuring the close contact between the sealing shell 11 and the installation shell body 1, then the locking bolt 24 is rotated to be screwed into the screw hole 23 and is tightened, the bolt head is tightly contacted with the knob 21, the friction pad 4 is used to fix the knob 21 by the friction force between the friction pad 4 and the knob 21, thereby avoiding the rotation of the knob 21 and the screw rod 16.

Claims

1. A sealed electric actuator, comprising a mounting housing (1), a reducer (3) is mounted in the interior of the mounting housing (1), a motor fixing frame (6) is screw mounted in the interior of the mounting housing (1), a motor (7) is mounted in the interior of the motor fixing frame (6), characterized in that: The inner side of the mounting shell (1) is provided with a support table (8), the top of the support table (8) is provided with a sealing glue groove (9) and a double sealing groove (10), the top of the mounting shell (1) is provided with a sealing shell (11), the bottom of the sealing shell (11) is provided with a sealing glue groove matching ring plate (12) and a double sealing ring plate (13), the bottom of the double sealing ring plate (13) is provided with a sealing glue strip (14), the side of the mounting shell (1) is provided with a mounting seat (15), the top of the mounting seat (15) is provided with a lead screw (16) and a guide groove (17), the guide groove (17) is slidably provided with a pressing block device, the top of the lead screw (16) is provided with a knob (21), a through hole (22) is provided between the knob (21) and the bottom end of the lead screw (16), the mounting seat (15) is provided with a screw hole (23) aligned with the through hole (22), and a locking bolt (24) is threadedly connected with the screw hole (23) through the through hole (22).

2. A sealed electric actuator according to claim 1, characterized in that: The mounting shell (1) is provided with an output shaft passing port (2), and the output shaft of the speed reducer (3) passes through the output shaft passing port (2).

3. A sealed electric actuator according to claim 2, characterised in that: The output shaft passing port (2) and the output shaft of the speed reducer (3) are provided with a sealing element (5).

4. A sealed electric actuator according to claim 1, characterized in that: The output shaft of the motor (7) is connected with the input shaft of the speed reducer (3) through a connecting shaft.

5. A sealed electric actuator according to claim 1, characterized in that: The sealing glue groove (9) and the sealing glue groove matching ring plate (12) are filled with sealing glue.

6. A sealed electric actuator according to claim 1, characterized in that: The pressing block device comprises an outer pressing block (18), an inner pressing block (19) is inserted and mounted in the inner side of the outer pressing block (18), a spring (20) is connected between the inner pressing block (19) and the outer pressing block (18), and the lead screw (16) is threadedly connected with the outer pressing block (18).

7. A sealed electric actuator according to claim 1, characterized in that: The outer side of the knob (21) is covered with a rubber anti-skid layer.

8. A sealed electric actuator according to claim 1, characterized in that: The hexagonal head of the locking bolt (24) is provided with a friction gasket (4) between the knob (21).

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