Hydraulic cylinder structure for adjusting impeller of long shaft type movable blade adjustable fan

Abstract

The invention relates to the technical field of hydraulic cylinders, and discloses a hydraulic cylinder structure for adjusting a long shaft type movable blade adjustable fan impeller, the hydraulic cylinder structure comprises a positioning sleeve and a fan shell, the outer wall of the positioning sleeve is fixedly connected with a plurality of sliding blocks, and the inner wall of the fan shell is provided with a plurality of sliding grooves; the outer wall of the sliding block is slidably connected to the inner wall of the sliding groove, the inner wall of the positioning sleeve is rotatably connected with a buffering ferrule, the inner wall of the buffering ferrule is fixedly connected with a plurality of springs, the inner wall of the positioning sleeve is rotatably connected with a transmission disc, and a buffering groove is formed in the inner wall of the transmission disc. Vibration generated during operation of the fan is transmitted to the buffering ferrule through the springs on the inner wall of the buffering groove, a buffering space is formed between the buffering ferrule and the buffering groove, and the multiple springs on the outer wall of the buffering groove are used for buffering the transmission disc, so that impact and vibration between the cylinder body and the impeller adjusting mechanism are buffered during operation of the fan; and the effect of prolonging the overall service life of the equipment is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic cylinders, in particular to a hydraulic cylinder structure used for adjusting an impeller of a long-shaft type fan with adjustable moving blades. Background Art

[0002] In many fields of industrial production, such as electricity, chemical industry, metallurgy and other industries, long-axis adjustable blade fans play a key role. When the fan is running, it is extremely important to flexibly adjust the impeller blade angle according to different working conditions. This is directly related to the precise control of air volume and air pressure, which in turn affects production efficiency and energy consumption levels. With the continuous improvement of industrial automation and refinement, there is a need for hydraulic cylinders that can stably, efficiently and accurately adjust the impeller, as well as long-life hydraulic cylinders to ensure the reliable operation of the fan under complex working conditions and help the smooth advancement of production processes in various industries. When adjusting the impeller of a traditional hydraulically driven fan, it is firmly fixed to the corresponding parts of the impeller adjustment mechanism through bolts, pins and other connectors to ensure effective transmission of force.

[0003] However, in the existing technology, the impeller is fixed to the corresponding part on the adjustment mechanism by bolts, pins, etc., which will cause the rapid movement of the hydraulic cylinder to cause greater vibration and impact at the connection with the fan adjustment structure, affecting the overall service life of the equipment. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a hydraulic cylinder structure for adjusting the impeller of a long-axis movable blade fan, which solves the problem that vibration and impact are easily generated at the connection between the hydraulic cylinder and the fan adjustment structure, thus affecting the service life of the entire equipment.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a hydraulic cylinder structure for adjusting the impeller of a long-axis movable blade adjustable fan, comprising a positioning sleeve and a fan housing, the outer wall of the positioning sleeve is fixedly connected with a plurality of sliders, the inner wall of the fan housing is provided with a plurality of slide grooves, the outer wall of the slide is slidably connected to the inner wall of the slide groove, the inner wall of the positioning sleeve is rotatably connected with a buffer ring, the inner wall of the buffer ring is fixedly connected with a plurality of springs, the inner wall of the positioning sleeve is rotatably connected with a transmission plate, the inner wall of the transmission plate is provided with a buffer groove, the bottom end of the spring is fixedly connected to the inner wall of the buffer groove, the outer wall of the transmission plate is fixedly connected with a cylinder body, the interior of the cylinder body is fixedly connected with a servo valve, the outer wall of the servo valve is slidably connected with a piston body, the servo valve slides axially inside the piston body, the outer wall of the servo valve is provided with a limiting component, and the limiting component is used for limiting the servo valve when it slides axially.

[0006] Preferably, the limit assembly includes a limit plate, the interior of the limit plate is fixedly connected to the outer wall of the servo valve, the outer wall of the piston body is fixedly connected to a support column, the outer wall of the support column is fixedly connected to a buffer pad, and the lower surface of the limit plate is arranged on the outer wall of the buffer pad.

[0007] Preferably, the inner wall of the positioning sleeve is slidably connected with a connecting shaft, and the bottom end of the connecting shaft is fixedly connected with a positioning plate.

[0008] Preferably, a positioning plate is fixedly connected to the outer wall of the connecting shaft, a fixing groove is provided inside the positioning sleeve, and the outer wall of the positioning plate is slidably connected to the inner wall of the fixing groove.

[0009] Preferably, the bottom end of the connecting shaft is fixedly connected with a first gear, the inner wall of the positioning sleeve is fixedly connected with a plurality of first racks, and an outer wall on one side of the first gear is meshedly connected with the outer wall of the first rack.

[0010] Preferably, the outer wall of the connecting shaft is fixedly connected to a second gear, the inner wall of the fan housing is axially slidably connected to a second rack, and the second gear is meshedly connected to the outer wall of the second rack on the other side outer wall corresponding to the position of the first gear.

[0011] Preferably, the outer wall of the connecting shaft is rotatably connected to a bearing, and the outer wall of the bearing is fixedly connected to the inside of the fan housing.

[0012] Preferably, a fan blade is fixedly connected to the top end of the connecting shaft.

[0013] Working principle: When the hydraulic cylinder mechanism is needed, it is turned on to run the fan, and hydraulic oil is introduced through the servo valve, and then the cylinder body is driven by the piston body to push the transmission plate to move to the right. At this time, the transmission plate can drive the positioning sleeve to slide to the right, and then the positioning sleeve can slide on the inner wall of the slide groove through the slider, thereby driving multiple first racks on its inner wall to move synchronously, and when the first rack moves, it can drive the first gear to rotate through the meshing connection, thereby driving multiple connecting shafts to rotate. At the same time, when the connecting shaft rotates, it can synchronize the second gear to drive the second rack supported by the inner wall of the fan casing to rotate in the opposite direction, that is, the first rack and the second rack are used to limit the two sides of the connecting shaft, so that the rotation angle of the fan blades can be adjusted by rotating the connecting shaft on the inner wall of the bearing. The positioning plate on the outer wall of the shaft rotates through the fixed groove to reduce the uneven load on the fan blades, thereby hydraulically driving the angle adjustment of multiple fan blades to achieve precise angle control and ensure the stability of the fan blades. When the cylinder body moves to the right, it will drive the servo valve to move axially, and at the same time can drive the limit plate to move synchronously. At this time, the buffer pad can limit the limit plate to avoid excessive movement of the cylinder body. When the fan blades are working, the transmission plate will vibrate, and the vibration of the transmission plate can be transmitted to the position of the buffer ring through the spring on the inner wall of the buffer groove. A buffer space is provided between the buffer ring and the buffer groove, and then the transmission plate is buffered by multiple springs on the outer wall of the buffer groove, thereby achieving a buffering effect on the cylinder body and the servo valve, thereby improving the service life of the hydraulic cylinder.

[0014] The present invention provides a hydraulic cylinder structure for adjusting the impeller of a long-axis type fan with adjustable moving blades. It has the following beneficial effects: 1. The present invention transmits the vibration of the fan during operation to the buffer ring through the spring on the inner wall of the buffer groove. Since there is a buffer space between the buffer ring and the buffer groove, the transmission plate is buffered by means of multiple springs on the outer wall of the buffer groove, thereby achieving the effect of buffering the impact and vibration between the cylinder body and the impeller adjustment mechanism when the fan is running, thereby achieving the effect of increasing the overall service life of the equipment.

[0015] 2. The present invention introduces hydraulic oil through the servo valve, and the piston body and the cylinder body push the transmission plate to move right, driving the positioning sleeve to slide, and the first rack moves through the slider and the slide groove, meshing the first gear and driving the connecting shaft to rotate. The connecting shaft is further limited by the second gear and the second rack to avoid the deviation of the connecting shaft, and then the angle of the fan blades is adjusted through the bearing to achieve the effect of precise control of the fan blades and stable operation when the fan is running. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A perspective view of the present invention; Figure 2It is a partial structural schematic diagram of a positioning sleeve of a hydraulic cylinder structure used for adjusting the impeller of a long-axis type fan with adjustable moving blades according to the present invention; Figure 3 It is a partial structural schematic diagram of a buffer ring of a hydraulic cylinder structure for adjusting the impeller of a long-axis type adjustable moving blade fan of the present invention; Figure 4 It is a schematic diagram of a partial structure of a spring of a hydraulic cylinder structure for adjusting an impeller of a long-axis type fan with adjustable moving blades according to the present invention; Figure 5 The present invention is a schematic diagram of the local structure of a connecting shaft of a hydraulic cylinder structure for adjusting an impeller of a long-shaft type fan with adjustable moving blades.

[0017] Among them, 1. positioning sleeve; 2. slider; 3. fan housing; 4. slide groove; 5. buffer ring; 6. spring; 7. transmission plate; 8. cylinder body; 9. servo valve; 10. piston body; 11. support column; 12. buffer pad; 13. limit plate; 14. connecting shaft; 15. positioning plate; 16. fixing groove; 17. first gear; 18. first rack; 19. second gear; 20. second rack; 21. bearing; 22. fan blade; 23. buffer groove. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Please see attached Figure 1 -Attached Figure 4 The embodiment of the present invention provides a hydraulic cylinder structure for adjusting the impeller of a long-axis movable blade adjustable fan, including a positioning sleeve 1 and a fan housing 3, the outer wall of the positioning sleeve 1 is fixedly connected with a plurality of sliders 2, the inner wall of the fan housing 3 is provided with a plurality of slide grooves 4, the outer wall of the slider 2 is slidably connected to the inner wall of the slide groove 4, the inner wall of the positioning sleeve 1 is rotatably connected with a buffer ring 5, the inner wall of the buffer ring 5 is fixedly connected with a plurality of springs 6, the inner wall of the positioning sleeve 1 is rotatably connected with a transmission plate 7, the inner wall of the transmission plate 7 is provided with a buffer groove 23, the bottom end of the spring 6 is fixedly connected to the inner wall of the buffer groove 23, the outer wall of the transmission plate 7 is fixedly connected with a cylinder body 8, the interior of the cylinder body 8 is fixedly connected with a servo valve 9, the outer wall of the servo valve 9 is slidably connected with a piston body 10, the servo valve 9 slides axially inside the piston body 10, the outer wall of the servo valve 9 is provided with a limiting component, and the limiting component is used for limiting the servo valve 9 when it slides axially.

[0020] Specifically, the positioning sleeve 1 has a fixed support function for the slider 2, and the positioning sleeve 1 can slide on the inner wall of the fan casing 3 through the slider 2, and the slide groove 4 can limit the sliding position of the positioning sleeve 1, and then when the fan casing 3 rotates, the positioning sleeve 1 can be driven to rotate synchronously through the slider 2, and the positioning sleeve 1 can rotate on the outer wall of the buffer ring 5, and the buffer ring 5 has a fixed support function for the spring 6, and the transmission plate 7 can fix the position of the spring 6. The buffer ring 5 uses the distance between the spring 6 and the buffer groove 23 as a buffer space, which can ensure that the positioning sleeve 1 has a buffering effect on the transmission plate 7 when rotating, and the transmission plate 7 has a fixed support function for the cylinder body 8, thereby ensuring the stability of the cylinder body 8 and improving the service life of the cylinder body 8. The cylinder body 8 is fixed to the servo valve 9, and the cylinder body 8 can be driven to slide on the outer wall of the piston body 10 by passing hydraulic oil into the servo valve 9, thereby driving the positioning sleeve 1 to slide on the inner wall of the fan casing 3 through the transmission plate 7.

[0021] Reference Figure 4 The limit assembly includes a limit plate 13, the interior of the limit plate 13 is fixedly connected to the outer wall of the servo valve 9, the outer wall of the piston body 10 is fixedly connected to the support column 11, the outer wall of the support column 11 is fixedly connected to the buffer pad 12, and the lower surface of the limit plate 13 is arranged on the outer wall of the buffer pad 12.

[0022] Specifically, the piston body 10 has a fixed supporting function for the support column 11, and the support column 11 can fix the position of the buffer pad 12. When the servo valve 9 and the cylinder body 8 move to the left synchronously, the limit plate 13 can be driven to move synchronously. When the limit plate 13 contacts the buffer pad 12, the moving position of the cylinder body 8 can be limited, and excessive displacement of the cylinder body 8 can be avoided.

[0023] Reference Figure 2 and Figure 5 The inner wall of the positioning sleeve 1 is slidably connected with a connecting shaft 14, and the bottom end of the connecting shaft 14 is fixedly connected with a positioning plate 15; the outer wall of the connecting shaft 14 is fixedly connected with the positioning plate 15, and a fixing groove 16 is opened inside the positioning sleeve 1, and the outer wall of the positioning plate 15 is slidably connected to the inner wall of the fixing groove 16.

[0024] Specifically, the positioning sleeve 1 can support the sliding position of the connecting shaft 14. At the same time, when the positioning sleeve 1 moves, the groove corresponding to the connecting shaft 14 can ensure the sliding space of the positioning sleeve 1, and the connecting shaft 14 has a fixed supporting function for the positioning plate 15. When the positioning sleeve 1 moves, the positioning plate 15 slides on the inner wall of the fixing groove 16, and then the positioning plate 15 can ensure the stability of the connecting shaft 14 through the fixing groove 16 to prevent the connecting shaft 14 from position displacement.

[0025] Reference Figure 2The bottom end of the connecting shaft 14 is fixedly connected with a first gear 17, the inner wall of the positioning sleeve 1 is fixedly connected with a plurality of first racks 18, and one side outer wall of the first gear 17 is meshedly connected to the outer wall of the first rack 18; the outer wall of the connecting shaft 14 is fixedly connected with a second gear 19, and the inner wall of the fan housing 3 is axially slidably connected with a second rack 20, and the other side outer wall of the second gear 19 corresponding to the position of the first gear 17 is meshedly connected to the outer wall of the second rack 20; the outer wall of the connecting shaft 14 is rotatably connected with a bearing 21, and the outer wall of the bearing 21 is fixedly connected to the inside of the fan housing 3; the top of the connecting shaft 14 is fixedly connected with a fan blade 22.

[0026] Specifically, the connecting shaft 14 has a fixed supporting function for the first gear 17. When the positioning sleeve 1 moves, it can drive the first rack 18 to move synchronously, thereby driving the first gear 17 to rotate. When the first gear 17 drives the connecting shaft 14 to rotate, it can synchronously drive the second gear 19 to rotate. When the second gear 19 rotates, it can drive the second rack 20 to move in the opposite direction on the inner wall of the fan casing 3, thereby ensuring the bilateral limiting of the connecting shaft 14 and ensuring the accuracy of the rotation angle of the connecting shaft 14. The bearing 21 can support the rotation position of the connecting shaft 14. At the same time, the connecting shaft 14 has a fixed supporting function for the fan blades 22, and then the rotation angle of the fan blades 22 can be accurately adjusted through the connecting shaft 14.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic cylinder structure for adjusting the impeller of a long-axis type fan with adjustable moving blades, comprising a positioning sleeve (1) and a fan housing (3), characterized in that: The outer wall of the positioning sleeve (1) is fixedly connected to a plurality of sliders (2), the inner wall of the fan housing (3) is provided with a plurality of slide grooves (4), the outer wall of the slider (2) is slidably connected to the inner wall of the slide groove (4), the inner wall of the positioning sleeve (1) is rotatably connected to a buffer ring (5), the inner wall of the buffer ring (5) is fixedly connected to a plurality of springs (6), the inner wall of the positioning sleeve (1) is rotatably connected to a transmission disc (7), the inner wall of the transmission disc (7) is provided with a buffer groove (23), the bottom end of the spring (6) is fixedly connected to the inner wall of the buffer groove (23), the outer wall of the transmission disc (7) is fixedly connected to a cylinder body (8), the interior of the cylinder body (8) is fixedly connected to a servo valve (9), the outer wall of the servo valve (9) is slidably connected to a piston body (10), the servo valve (9) slides axially inside the piston body (10), and the outer wall of the servo valve (9) is provided with a limit assembly, the limit assembly is used to limit the servo valve (9) when it slides axially.

2. A hydraulic cylinder structure for adjusting the impeller of a long-axis type fan with adjustable moving blades according to claim 1, characterized in that: The limit assembly comprises a limit plate (13), the interior of the limit plate (13) is fixedly connected to the outer wall of the servo valve (9), the outer wall of the piston body (10) is fixedly connected to a support column (11), the outer wall of the support column (11) is fixedly connected to a buffer pad (12), and the lower surface of the limit plate (13) is arranged on the outer wall of the buffer pad (12).

3. The hydraulic cylinder structure for adjusting the impeller of a long-axis type adjustable moving blade fan according to claim 1, characterized in that: The inner wall of the positioning sleeve (1) is slidably connected to a connecting shaft (14), and the bottom end of the connecting shaft (14) is fixedly connected to a positioning plate (15).

4. The hydraulic cylinder structure for adjusting the impeller of a long-axis type fan with adjustable moving blades according to claim 3 is characterized in that: A positioning plate (15) is fixedly connected to the outer wall of the connecting shaft (14), a fixing groove (16) is provided inside the positioning sleeve (1), and the outer wall of the positioning plate (15) is slidably connected to the inner wall of the fixing groove (16).

5. The hydraulic cylinder structure for adjusting the impeller of a long-axis type fan with adjustable moving blades according to claim 4, characterized in that: The bottom end of the connecting shaft (14) is fixedly connected to a first gear (17), the inner wall of the positioning sleeve (1) is fixedly connected to a plurality of first racks (18), and an outer wall of one side of the first gear (17) is meshingly connected to the outer wall of the first rack (18).

6. A hydraulic cylinder structure for adjusting the impeller of a long-axis type fan with adjustable moving blades according to claim 5, characterized in that: The outer wall of the connecting shaft (14) is fixedly connected to a second gear (19), the inner wall of the fan housing (3) is axially slidably connected to a second rack (20), and the outer wall of the second gear (19) corresponding to the position of the first gear (17) is meshedly connected to the outer wall of the second rack (20).

7. A hydraulic cylinder structure for adjusting the impeller of a long-axis type fan with adjustable moving blades according to claim 6, characterized in that: The outer wall of the connecting shaft (14) is rotatably connected to a bearing (21), and the outer wall of the bearing (21) is fixedly connected to the inside of the fan housing (3).

8. The hydraulic cylinder structure for adjusting the impeller of a long-axis type fan with adjustable moving blades according to claim 7, characterized in that: The top end of the connecting shaft (14) is fixedly connected to a fan blade (22).

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