A low-noise horizontal reducer for petrochemical pan / tilt

Abstract

The present invention relates to the technical field of reducers, and discloses a low-noise reducer for a petrochemical pan-tilt head. The present invention comprises: a shell capable of accommodating lubricating oil inside, and a first shaft rod and a second shaft rod rotatably installed in the shell, the first shaft rod and the second shaft rod are respectively sleeved with meshing worm sleeves and worm wheels, and the first shaft rod is provided with two shaft rod stabilizing mechanisms; the shaft rod stabilizing mechanism comprises an outer ring installed on the inner wall of the shell and a rotating wheel sleeved on the first shaft rod, the rotating wheel is sleeved with a threaded conveying cylinder, an overflow chamber is provided between the outer ring and the rotating wheel, and the rotating wheel is provided with a plurality of first discharge holes distributed in an annular shape and connected to the overflow chamber. The present invention forms a stable centripetal pressure by conveying the lubricating oil inside the reducer, thereby ensuring the stability of the shaft rod when it rotates, thereby reducing the noise generated by vibration when the shaft rod rotates.

Description

Technical Field

[0001] The invention relates to the technical field of reducers, and in particular to a low-noise reducer for a petrochemical pan / tilt platform. Background Art

[0002] A worm gear reducer is a reduction transmission device, which is often used as a transmission part to connect with a gimbal stabilizer. It will generate a lot of noise during operation. Under the premise of eliminating mechanical failures, the noise mainly comes from the friction and collision between the worm gear transmission teeth, and the vibration caused by the collision between the worm gear and the worm. Among them, the shaft of the worm wheel can increase the stiffness and stability of the shaft by adjusting the ratio between the worm wheel and the shaft to make the shaft diameter larger, thereby reducing the vibration amplitude. However, the shaft of the worm is restricted by the worm, resulting in a limited adjustable range of its diameter. In particular, the shaft of the worm is more slender than the shaft of the worm wheel, and is more susceptible to vibration and noise. In addition, vibration will also aggravate bearing wear and cause problems such as axial center offset, which in turn leads to increased vibration.

[0003] At present, the main problem with the friction and collision between the worm gear transmission teeth is the difference in precision between the transmission teeth and the wear after long-term use, which leads to the increase in the gap between the transmission teeth. The solution to this technical problem is mainly to improve the lubrication effect and the processing accuracy between the parts. However, there has been a lack of more effective ways to suppress the vibration of the worm shaft. Therefore, it is necessary to propose a low-noise reducer. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a low-noise level reducer for a petrochemical pan / tilt.

[0005] The present invention is implemented by the following technical scheme: a housing capable of containing lubricating oil, and a first shaft and a second shaft rotatably mounted in the housing, wherein the first shaft and the second shaft are respectively sleeved with meshing worm sleeves and worm wheels, and the first shaft is provided with two shaft stabilizing mechanisms;

[0006] The shaft rod stabilization mechanism includes an outer ring installed on the inner wall of the shell and a rotating wheel mounted on the first shaft rod, a threaded conveying cylinder is mounted on the rotating wheel, an overflow chamber is arranged between the outer ring and the rotating wheel, and a plurality of first discharge holes distributed in an annular shape and connected to the overflow chamber are arranged on the rotating wheel, so that the threaded conveying cylinder can rotate with the first shaft rod, and the lubricating oil in the shell is transported to the overflow chamber through the first discharge holes to form a discharge pressure to improve the stability of the first shaft rod.

[0007] As a further improvement of the above scheme, the rotating wheel is limitedly connected to the first shaft rod, the threaded conveying cylinder is rotatably sleeved on the rotating wheel, a circular gear is provided at one end of the rotating wheel, a gear ring is provided on the threaded conveying cylinder, and a double gear is rotatably installed on the outer ring, and the double gears are respectively meshed with the circular gear and the gear ring, so that the threaded conveying cylinder can not only rotate with the help of the power of the first shaft rod, but also increase the rotation speed on the original basis.

[0008] As a further improvement of the above scheme, a plurality of second discharge holes distributed in an annular shape and connected to the plurality of first discharge holes are provided on the corresponding rotating wheel, and the outlet ends of the plurality of second discharge holes are opposite to one end of the worm sleeve, so that the lubricating oil can be discharged through the second discharge holes and push the worm sleeve, so that the worm sleeve and the worm wheel always maintain a tight meshing.

[0009] As a further improvement of the above scheme, a shaft rod stabilizing mechanism is provided with a second discharge hole, and the overflow chamber arranged thereon is smaller than the overflow chamber of the shaft rod stabilizing mechanism without the second discharge hole, thereby reducing the displacement of the first discharge hole and ensuring that the lubricating oil discharged from the second discharge hole has sufficient power to push the worm sleeve to move.

[0010] As a further improvement of the above scheme, a shaft rod stabilizing mechanism is provided with a second discharge hole, and the outlet end of the first discharge hole is smaller than the outlet end of the first discharge hole on the shaft rod stabilizing mechanism without the second discharge hole, so as to limit the discharge volume of the first discharge hole while ensuring that the lubricating oil discharged has sufficient pressure to maintain the stability of the first shaft rod.

[0011] As a further improvement of the above scheme, a plurality of overflow grooves distributed in an annular shape are provided at one end of the worm sleeve close to the second discharge hole, and the plurality of overflow grooves respectively correspond to the plurality of second discharge holes, so as to serve as a guide path for the lubricating oil to be discharged stably and thereby push the worm sleeve to engage closely with the worm wheel.

[0012] As a further improvement of the above scheme, a spring is provided on the first shaft rod, and the two ends of the spring are respectively against the worm sleeve and the corresponding rotating wheel, so that the worm sleeve can be pushed back and tightened, so that the worm sleeve can adjust the axial position after being impacted by the lubricating oil, and can also be limited to the current position and remain stable under normal conditions.

[0013] As a further improvement of the above solution, a limiting sleeve is sleeved on the spring, and the limiting sleeve consists of two parts, an inner sleeve and an outer sleeve, so that the spring can be limited and the stability of the spring is improved.

[0014] As a further improvement of the above scheme, a plurality of limiting grooves distributed in an annular shape are arranged on the first shaft rod, and a plurality of corresponding limiting ribs are arranged on the sleeve holes of the worm sleeve and the rotating wheel, so that the first shaft rod can synchronously drive the worm sleeve and the rotating wheel to rotate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] By arranging a shaft stabilizing mechanism on the worm shaft that is prone to vibration in the reducer, the first shaft can drive the threaded conveying cylinder to rotate when it rotates, and the threaded conveying cylinder can convey the lubricating oil, so that when the lubricating oil is discharged, pressure will be generated in the overflow chamber, so that a stable centripetal force is formed when the first shaft rotates, thereby ensuring the stability of the first shaft when it rotates, suppressing the vibration generated during the transmission process, thereby reducing the noise generated by the vibration of the first shaft, and by improving the stability of the first shaft, the burden on the bearing can also be reduced, thereby reducing the wear on the bearing, and avoiding the noise caused by excessive wear of the bearing;

[0017] By arranging an equal acceleration transmission structure of a circular gear and a double gear on the shaft rod stabilization mechanism, the thread conveying cylinder can not only rotate with the help of the power of the first shaft rod, but also further increase the rotation speed on the original basis, thereby increasing the delivery amount of the lubricating oil of the thread conveying cylinder and thereby increasing the pressure of the lubricating oil discharged into the overflow chamber, thereby improving the stabilization effect on the first shaft rod;

[0018] By adding a plurality of second discharge holes on one of the rotating wheels, the shaft stabilizing mechanism can not only ensure the stability of the first shaft by means of the pressure generated when the lubricating oil is transported, but also can make a certain degree of axial displacement of the worm sleeve, so that wear occurs between the transmission teeth of the worm sleeve and the worm wheel, resulting in the inability of the two to mesh tightly. In this way, the two can also be tightly meshed, so that there will be no noise due to the gap when the two are transmitting. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is an overall display diagram of the low-noise level reducer for the petrochemical pan-tilt platform of the present invention;

[0020] Figure 2 A cross-sectional view showing a low-noise level reducer for a petrochemical pan / tilt platform of the present invention;

[0021] Figure 3 A planar cross-sectional view of a low-noise level reducer for a petrochemical pan / tilt platform of the present invention;

[0022] Figure 4 It is a three-dimensional display diagram of the first shaft, the worm sleeve and the shaft stabilizing mechanism;

[0023] Figure 5 It is a planar cross-sectional illustration of the first shaft, the worm sleeve and the shaft stabilizing mechanism;

[0024] Figure 6 The disassembled display diagram of the first shaft rod, the worm gear sleeve and the shaft rod stabilizing mechanism;

[0025] Figure 7 This is a disassembled display diagram of the shaft stabilization mechanism;

[0026] Figure 8 This is a separate display diagram of the worm gear sleeve;

[0027] Fig. 9 It is a cross-sectional view showing the spring and the limiting sleeve.

[0028] Description of main symbols:

[0029] 1. Housing; 2. First shaft; 3. Worm sleeve; 4. Second shaft; 5. Worm wheel; 6. Bearing; 7. Retaining cylinder; 8. Outer ring; 9. Rotating wheel; 10. Overflow chamber; 11. First discharge hole; 12. Threaded conveying cylinder; 13. Double gear; 14. Circular gear; 15. Second discharge hole; 16. Overflow groove; 17. Inner cylinder; 18. Outer cylinder; 19. Spring. DETAILED DESCRIPTION

[0030] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0031] Please combine Figures 1 to 9 , a low-noise level reducer for a petrochemical pan-tilt head, comprising: a housing 1 capable of containing lubricating oil, and a first shaft 2 and a second shaft 4 rotatably mounted in the housing 1, the first shaft 2 and the second shaft 4 are both stepped shafts, the first shaft 2 and the second shaft 4 are both provided with bearings 6, the first shaft 2 and the second shaft 4 are respectively sleeved with meshing worm sleeves 3 and worm wheels 5, the first shaft 2 is provided with two shaft stabilizing mechanisms, and a sleeve 7 is provided between the bearing 6 and the shaft stabilizing mechanism, which cooperates with the first shaft 2 of the stepped shaft, and can limit the shaft stabilizing mechanism, so as to ensure the stability of the shaft stabilizing mechanism, the first shaft 2 is provided with a plurality of limiting grooves distributed in an annular manner, and the worm sleeve 3 is provided with a plurality of corresponding limiting ribs, so that the first shaft 2 can synchronously drive the worm sleeve 3 to rotate;

[0032] The shaft stabilizing mechanism includes an outer sleeve 8 mounted on the inner wall of the housing 1 and a rotating wheel 9 limitedly sleeved on the first shaft 2. The sleeve hole of the rotating wheel 9 is provided with limiting ribs that can correspond to the limiting grooves of the first shaft 2. The rotating wheel 9 can rotate synchronously with the first shaft 2, and the centrifugal force generated when it rotates will also promote the discharge of lubricating oil. A threaded conveying cylinder 12 is rotatably sleeved on the rotating wheel 9. An overflow chamber 10 is provided between the outer sleeve 8 and the rotating wheel 9. A plurality of first discharge holes 11 distributed in an annular shape and connected to the overflow chamber 10 are provided on the rotating wheel 9. The threaded conveying cylinder 12 can rotate with the first shaft 2, and the lubricating oil in the shell 1 is transported to the overflow chamber 10 through the first discharge hole 11 to form a discharge pressure to improve the stability of the first shaft 2. A circular gear 14 is arranged at one end of the rotating wheel 9, a gear ring is arranged on the threaded conveying cylinder 12, and a double gear 13 is rotatably installed on the outer ring 8. The double gear 13 is respectively meshed with the circular gear 14 and the gear ring, so that the threaded conveying cylinder 12 can not only rotate with the help of the power of the first shaft 2, but also increase the rotation speed on the original basis.

[0033] Through the above technical solution, by setting a shaft stabilizing mechanism on the worm shaft that is prone to vibration in the reducer, the first shaft 2 can drive the threaded conveying cylinder 12 to rotate when it rotates, and the threaded conveying cylinder 12 can convey the lubricating oil, so that when the lubricating oil is discharged, pressure will be generated in the overflow chamber 10, so that a stable centripetal force is formed in the first shaft 2 when it rotates, thereby ensuring the stability of the first shaft 2 when it rotates, suppressing the vibration generated during the transmission process, thereby reducing the noise generated by the vibration of the first shaft 2, and by improving the stability of the first shaft 2 At the same time, it can also reduce the burden on the bearing 6, thereby reducing the wear on the bearing 6 and avoiding the noise caused by excessive wear of the bearing; by arranging the equal acceleration transmission structure of the circular gear 14 and the double gear 13 on the shaft rod stabilization mechanism, the threaded conveying cylinder 12 can not only rotate with the help of the power of the first shaft rod 2, but also can further increase the speed on the original basis, so as to increase the delivery amount of the lubricating oil of the threaded conveying cylinder 12, and thereby increase the pressure of the lubricating oil discharged into the overflow chamber 10, so as to improve the stabilization effect on the first shaft rod 2.

[0034] The corresponding rotating wheel 9 is provided with a plurality of second discharge holes 15 distributed in an annular manner and connected with the plurality of first discharge holes 11. The outlet ends of the plurality of second discharge holes 15 are opposite to one end of the worm sleeve 3, so that the lubricating oil can be discharged through the second discharge holes 15 and push the worm sleeve 3, so that the worm sleeve 3 and the worm wheel 5 always maintain a tight meshing. The shaft rod stabilizing mechanism provided with the second discharge holes 15, the overflow chamber 10 provided thereon is smaller than the overflow chamber 10 of the shaft rod stabilizing mechanism without the second discharge holes 15, thereby reducing the displacement of the first discharge holes 11 and ensuring that the lubricating oil discharged from the second discharge holes 15 has sufficient power to push the worm sleeve 3 to move. The shaft rod stabilizing mechanism provided with the second discharge holes 15, the outlet end of the first discharge hole 11 of which is smaller than the outlet end of the first discharge hole 11 on the shaft rod stabilizing mechanism without the second discharge holes 15, is used to limit the displacement of the first discharge hole 11 while ensuring that the lubricating oil discharged has sufficient pressure to maintain the stability of the first shaft 2.

[0035] Through the above technical solution, the shaft stabilization mechanism can not only ensure the stability of the first shaft 2 by means of the pressure generated when the lubricating oil is transported, but also can perform a certain degree of axial displacement on the worm sleeve 3, so that wear occurs between the transmission teeth of the worm sleeve 3 and the worm wheel 5, resulting in the inability of the two to mesh tightly. In this way, the two can be tightly meshed, so that there will be no noise due to the gap when the two are transmitting.

[0036] A plurality of annularly distributed overflow grooves 16 are provided at one end of the worm sleeve 3 close to the second discharge hole 15. The plurality of overflow grooves 16 respectively correspond to the plurality of second discharge holes 15, serving as a guide path for the lubricating oil to be discharged stably and thereby driving the worm sleeve 3 to mesh closely with the worm wheel 5.

[0037] A spring 19 is sleeved on the first shaft 2, and the two ends of the spring 19 are respectively against the worm sleeve 3 and the corresponding rotating wheel 9, so that the worm sleeve 3 can be pushed back and tightened, so that the worm sleeve 3 can not only adjust the axial position after being impacted by the lubricating oil, but also be limited to the current position and remain stable under normal conditions. A limiting sleeve is sleeved on the spring 19, and the limiting sleeve consists of two parts: an inner sleeve 17 and an outer sleeve 18, so that the spring 19 can be limited and the stability of the spring 19 is improved.

[0038] Through the above technical solution, if only the spring 19 or the second discharge hole 15 is provided, the position adjustment of the worm sleeve 3 can also be achieved, so that it can still keep a close fit with the worm wheel 5 even after the transmission teeth are worn. However, if only the second discharge hole 15 is provided, the worm sleeve 3 is easy to slide on the first shaft 2 under normal conditions. When the reducer is reassembled after maintenance, the worm sleeve 3 needs to be adjusted to a position matching with the worm wheel 5 to achieve installation so that the two can mesh normally. If only the spring 19 is provided, the worm sleeve 3 will fit closely with the worm wheel 5 under the push of the spring 19. However, when the reducer is disassembled and maintained, the limitation of the worm wheel 5 is lost, and the worm sleeve 3 will be pushed to a state of being misaligned with the worm wheel 5. This requires that the position of the worm sleeve 3 be adjusted during assembly. Therefore, the spring 19 cooperates with the second discharge hole 15 to form a limited area between the spring 19 and the corresponding rotating wheel 9 to limit the position of the worm sleeve 3. The lubricating oil is then discharged from the second discharge hole 15 to push the worm sleeve 3 to adjust the position of the worm sleeve 3, thereby satisfying its stability and achieving its adjustability.

[0039] The implementation principle of a low-noise level reducer for a petrochemical pan / tilt in the embodiment of the present application is:

[0040] When the first shaft 2 is driven by the driving device to drive the worm sleeve 3 to rotate, the worm sleeve 3 will drive the worm wheel 5 and the second shaft 4 to rotate. At the same time, the first shaft 2 will also drive the two rotating wheels 9 and the circular gear 14 installed on the two rotating wheels 9 to rotate. The circular gear 14 drives the threaded conveying cylinder 12 provided with a gear ring to rotate through the double gear 13. The threaded conveying cylinder 12 conveys the lubricating oil in the housing 1 during the rotation process, so that the lubricating oil enters the first discharge hole 11, and then is discharged into the overflow chamber 10, and a strong pressure is formed in the overflow chamber 10, and finally overflows from the overflow chamber 10, so as to ensure the stability of the first shaft 2 through the pressure generated when the lubricating oil is discharged, suppress the vibration of the first shaft 2, and reduce the noise generated by the vibration;

[0041] At the same time, when the other rotating wheel 9 discharges the lubricating oil through the first discharge hole 11, the lubricating oil will also be discharged through the second discharge hole 15. The pressure generated by the lubricating oil discharged from the multiple second discharge holes 15 during discharge can push the worm sleeve 3, so that the worm sleeve 3 keeps a close fit with the worm wheel 5 while pushing the spring 19, so that the transmission teeth of the worm sleeve 3 and the worm wheel 5 can still keep a close meshing when they are worn, thereby avoiding the noise caused by the inability of the worm sleeve 3 and the worm wheel 5 to be closely meshed after being worn.

[0042] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A low-noise level reducer for a petrochemical pan / tilt, comprising: A housing (1) capable of containing lubricating oil, and a first shaft (2) and a second shaft (4) rotatably mounted in the housing (1), wherein the first shaft (2) and the second shaft (4) are respectively sleeved with meshing worm sleeves (3) and worm wheels (5), characterized in that: The first shaft (2) is provided with two shaft stabilization mechanisms, the shaft stabilization mechanisms comprising an outer ring (8) mounted on the inner wall of the housing (1) and a rotating wheel (9) sleeved on the first shaft (2), a threaded conveying cylinder (12) sleeved on the rotating wheel (9), an overflow chamber (10) being provided between the outer ring (8) and the rotating wheel (9), and a plurality of first discharge holes (11) distributed in an annular shape and connected to the overflow chamber (10) being provided on the rotating wheel (9), so that the threaded conveying cylinder (12) can rotate with the first shaft (2) and transport the lubricating oil in the housing (1) to the overflow chamber (10) through the first discharge holes (11) to form a discharge pressure to improve the stability of the first shaft (2); The rotating wheel (9) is limitedly connected to the first shaft (2), the threaded conveying cylinder (12) is rotatably sleeved on the rotating wheel (9), one end of the rotating wheel (9) is provided with a circular gear (14), a toothed ring is provided on the threaded conveying cylinder (12), and a double gear (13) is rotatably mounted on the outer ring (8), the double gear (13) is respectively meshed with the circular gear (14) and the toothed ring, so that the threaded conveying cylinder (12) can not only rotate with the help of the power of the first shaft (2), but also increase the rotation speed on the original basis; The first shaft (2) is provided with a plurality of limiting grooves distributed in an annular shape, and the sleeve holes of the worm sleeve (3) and the rotating wheel (9) are provided with a plurality of corresponding limiting ribs, so that the first shaft (2) can synchronously drive the worm sleeve (3) and the rotating wheel (9) to rotate.

2. The low noise level reducer for petrochemical pan / tilt head according to claim 1, characterized in that: The corresponding rotating wheel (9) is provided with a plurality of second discharge holes (15) distributed in an annular shape and connected to the plurality of first discharge holes (11); outlet ends of the plurality of second discharge holes (15) are all opposite to one end of the worm sleeve (3), so that lubricating oil can be discharged through the second discharge holes (15) and push the worm sleeve (3), so that the worm sleeve (3) and the worm wheel (5) are always tightly meshed.

3. The low noise level reducer for the petrochemical pan / tilt head according to claim 2, characterized in that: The shaft rod stabilizing mechanism is provided with a second discharge hole (15), and the overflow chamber (10) provided thereon is smaller than the overflow chamber (10) of the shaft rod stabilizing mechanism not provided with the second discharge hole (15), thereby reducing the discharge volume of the first discharge hole (11), ensuring that the lubricating oil discharged from the second discharge hole (15) has sufficient power to push the worm sleeve (3) to move.

4. The low noise level reducer for the petrochemical pan / tilt head according to claim 2, characterized in that: The shaft rod stabilizing mechanism is provided with a second discharge hole (15), and the outlet end of the first discharge hole (11) is smaller than the outlet end of the first discharge hole (11) on the shaft rod stabilizing mechanism not provided with the second discharge hole (15), so as to limit the discharge volume of the first discharge hole (11) while ensuring that the lubricating oil discharged has sufficient pressure to maintain the stability of the first shaft rod (2).

5. The low noise level reducer for the petrochemical pan / tilt head according to claim 2, characterized in that: A plurality of overflow grooves (16) distributed in an annular shape are provided at one end of the worm sleeve (3) close to the second discharge hole (15), and the plurality of overflow grooves (16) respectively correspond to the plurality of second discharge holes (15), so as to serve as a guide path to allow the lubricating oil to be discharged stably and thereby promote the worm sleeve (3) to mesh tightly with the worm wheel (5).

6. The low noise level reducer for the petrochemical pan / tilt head according to claim 1, characterized in that: A spring (19) is sleeved on the first shaft (2), and two ends of the spring (19) respectively abut against the worm sleeve (3) and the corresponding rotating wheel (9), thereby being able to push the worm sleeve (3) back and tighten it, so that the worm sleeve (3) can be adjusted in axial position after being impacted by lubricating oil, and can also be limited to a current position and remain stable under normal conditions.

7. The low noise level reducer for the petrochemical pan / tilt head according to claim 6, characterized in that: The spring (19) is sleeved with a limiting sleeve, the limiting sleeve consisting of an inner sleeve (17) and an outer sleeve (18), thereby limiting the spring (19) and improving the stability of the spring (19).

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