Modulus secondary enveloping worm and worm gear speed reducer

Abstract

The invention discloses a modulus secondary enveloping worm and worm gear speed reducer which comprises a driving mechanism, a worm gear and a worm gear, the transmission assembly is connected to the driving mechanism and is driven by the driving mechanism; the enveloping worm is connected to the transmission assembly, and the transmission assembly drives the enveloping worm to rotate; the enveloping worm is arranged in the enveloping shell in a penetrating mode in the first direction, and the enveloping shell is provided with a first opening end and a second opening end which are oppositely arranged in the second direction; the enveloping worm wheel assembly comprises an enveloping worm wheel and two connecting pieces, the two connecting pieces are arranged at the two shaft ends of the enveloping worm wheel respectively and extend in the second direction, the enveloping worm wheel is arranged in the enveloping shell and meshed with the enveloping worm, and the two connecting pieces extend out of the first opening end and the second opening end of the enveloping shell respectively; wherein the first direction is perpendicular to the second direction. The bearing capacity is high, the transmission stability is good, and the transmission efficiency is high; the extension direction of the driving mechanism is arranged to be parallel to the square tube of the cross beam, the rotatable angle of the photovoltaic panel is increased, and the power generation efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic tracking, and particularly to a modulus secondary envelope worm and worm gear reducer. Background Art

[0002] A photovoltaic tracking bracket is a bracket for installing photovoltaic panels. It adjusts the position of the photovoltaic tracking bracket according to the position of the sun, thereby changing the angle of the photovoltaic panels installed on the photovoltaic tracking bracket to improve the utilization rate of the sun. Generally, a reducer is used to convert the high-speed and low-torque output of the motor into a low-speed and high-torque power suitable for the movement of the photovoltaic tracking bracket, so as to achieve precise adjustment of the angle of the photovoltaic panels. However, the existing reducers have poor transmission smoothness, poor load-bearing capacity, and low transmission efficiency. In addition, the rotatable angle of the photovoltaic panels is small and has limitations. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a modulus secondary envelope worm and worm gear reducer.

[0004] In order to achieve the above purpose, the technical solution provided by an embodiment of the present invention is as follows:

[0005] A modulus secondary envelope worm and worm gear reducer, comprising:

[0006] A driving mechanism;

[0007] A transmission assembly, connected to the driving mechanism and driven by the driving mechanism;

[0008] An envelope worm, connected to the transmission assembly, and the transmission assembly drives the envelope worm to rotate;

[0009] An envelope housing, the envelope worm is disposed in the envelope housing along a first direction, and the envelope housing has a first opening end and a second opening end oppositely disposed along a second direction;

[0010] An envelope worm gear assembly, including an envelope worm gear and two connecting members respectively disposed at two shaft ends of the envelope worm gear and extending along the second direction. The envelope worm gear is disposed in the envelope housing and meshes with the envelope worm, and the two connecting members respectively extend out of the first opening end and the second opening end of the envelope housing;

[0011] Wherein, the first direction is perpendicular to the second direction.

[0012] As a further improvement of the present invention, the driving mechanism extends along the second direction.

[0013] As a further improvement of the present invention, the driving mechanism includes a driving motor, the transmission assembly includes a first bevel gear and a second bevel gear meshing with the first bevel gear. The first bevel gear is connected to the output shaft of the driving motor and moves along with the output shaft, and the enveloping worm is connected to the second bevel gear and moves along with the second bevel gear.

[0014] As a further improvement of the present invention, a bevel gear box housing is further provided. The bevel gear box housing has a third opening end and a fourth opening end. The opening direction of the third opening end is horizontally perpendicular to the opening direction of the fourth opening end. The first bevel gear is placed into the bevel gear box housing along the third opening end, one end of the enveloping worm is placed into the bevel gear box housing along the fourth opening end, the second bevel gear is connected to one end of the enveloping worm, and the third opening end and the fourth opening end of the bevel gear box housing are respectively fixedly connected to the fixing part of the driving motor and the enveloping housing.

[0015] As a further improvement of the present invention, the output shaft of the driving motor is splined to the first bevel gear.

[0016] As a further improvement of the present invention, the second bevel gear is keyed to the enveloping worm.

[0017] As a further improvement of the present invention, a first end cover and a second end cover are further provided. A first bearing is provided on the first bevel gear. The first end cover is threadedly connected into the bevel gear box housing along the third opening end and abuts against the first bearing. Two second bearings are provided on the enveloping worm. One of the second bearings is provided at the other end of the enveloping worm and abuts against the enveloping housing and the enveloping worm respectively. The second end cover is threadedly connected into the enveloping housing and abuts against the other second bearing.

[0018] As a further improvement of the present invention, an enveloping cover plate is fixed to the first opening end of the enveloping housing. The two shaft ends of the enveloping worm gear respectively abut against the enveloping housing and the enveloping cover plate.

[0019] As a further improvement of the present invention, a stop member extends axially along the outer peripheral wall of the enveloping cover plate.

[0020] As a further improvement of the present invention, an installation assembly is further included. The installation assembly includes two installation members oppositely arranged along the second direction, and the two installation members are respectively fixedly connected to the two connection members.

[0021] The beneficial effects of the present invention are:

[0022] (1) The worm and worm gear of the present invention adopt a secondary envelope form, with strong load-bearing capacity, good transmission stability, high transmission efficiency, long service life, high precision and reliability, and can achieve precise adjustment of the angle of the photovoltaic panel.

[0023] (2) The present invention sets the extension direction of the driving mechanism to be parallel to the square tube of the cross beam, and the photovoltaic panel is installed on the square tube of the cross beam, which increases the rotatable angle of the photovoltaic panel and thus improves the power generation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 is a schematic exploded view of the preferred embodiment of the present invention;

[0026] Figure 2 is a perspective view of the preferred embodiment of the present invention;

[0027] Figure 3 is a right view of the preferred embodiment of the present invention;

[0028] Figure 4 is for Figure 3 a sectional view taken along the line A-A of

[0029] Figure 5 is a rear view of the preferred embodiment of the present invention;

[0030] Figure 6 is for Figure 5 a sectional view taken along the line B-B of

[0031] Figure 7 is for Figure 6 an enlarged view of C in

[0032] Figure 8 is a top view of the preferred embodiment of the present invention;

[0033] Figure 9 is for Figure 8 a sectional view taken along the line D-D of

[0034] Figure 10 is for Figure 9 an enlarged view of E in

[0035] In the figure: 1. Driving mechanism, 11. Driving motor, 111. Spline shaft, 112. Fixed part, 2. Transmission component, 21. First bevel gear, 211. Spline hole, 22. Second bevel gear, 221. First groove, 3. Enveloping worm, 31. Second groove, 32. First annular step, 33. Tooth clearance adjusting gasket, 4. Enveloping housing, 41. First open end, 42. Second open end, 43. Enveloping cover plate, 431. Annular convex part, 44. Stopper, 441. Stopper block, 5. Enveloping worm gear assembly, 51. Enveloping worm gear, 52. Connecting piece, 521. Cylindrical connecting part, 522. Hexagonal connecting part, 531. Second annular step, 532. Second oil-free bearing, 6. Bevel gear box housing, 61. Third open end, 62. Fourth open end, 701. Flat key, 702. First end cover, 703. Second end cover, 704. First bearing, 705. Second bearing, 706. Deep groove ball bearing, 707. First oil-free bearing, 8. Mounting piece, 81. Hexagonal mounting part, 82. Quadrilateral mounting part, 83. Rivet. Detailed implementation manners

[0036] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] Please refer to Figure 1 , Figure 2 , this application embodiment discloses a modulus secondary enveloping worm and worm gear reducer, including a driving mechanism 1, a transmission component 2, an enveloping worm 3, an enveloping housing 4, and an enveloping worm gear assembly 5. The transmission component 2 is connected to the driving mechanism 1 and is driven by the driving mechanism 1. The enveloping worm 3 is connected to the transmission component 2, and the transmission component 2 drives the enveloping worm 3 to rotate. The enveloping worm 3 is arranged in the enveloping housing 4 along a first direction, and the enveloping housing 4 has a first open end 41 and a second open end 42 that are oppositely arranged along a second direction. The enveloping worm gear assembly 5 includes an enveloping worm gear 51 and two connecting pieces 52 respectively arranged at both axial ends of the enveloping worm gear 51 and extending along the second direction. The enveloping worm gear 51 is arranged in the enveloping housing 4 and meshes with the enveloping worm 3, and the two connecting pieces 52 respectively extend out of the first open end 41 and the second open end 42 of the enveloping housing 4. Wherein, the first direction is perpendicular to the second direction.

[0038] The enveloping worm 3 and the enveloping worm wheel 51 form a planar double-enveloping toroidal worm and worm wheel pair. Through two enveloping processes, the tooth surfaces of the enveloping worm 3 and the enveloping worm wheel 51 are made to fit more closely, thereby increasing the contact area and load-carrying capacity. During rotation, wear can be effectively reduced, the transmission efficiency and service life can be better improved, and the precise adjustment of the angle of the photovoltaic panel can be further realized.

[0039] For the sake of convenience of explanation, Figure 2 the first direction and the second direction are marked in [reference], the first direction is the X-axis direction in the figure, and the second direction is the Y-axis direction in the figure.

[0040] Please refer to Figure 2 , the driving mechanism 1 extends along the second direction. The crossbeam square tube extends along the second direction and is fixedly connected to two connecting pieces 52. When the crossbeam square tube is driven by the reducer to rotate, the photovoltaic panel is fixed to the crossbeam square tube through purlins and rotates together with the crossbeam square tube. Since the extending direction of the driving mechanism 1 is parallel to that of the crossbeam square tube, the rotatable angle of the photovoltaic panel is increased, and the power generation efficiency is improved.

[0041] In an embodiment, please refer to Figure 1 、 Figure 3 、 Figure 4 , the driving mechanism 1 includes a driving motor 11, and the transmission component 2 includes a first bevel gear 21 and a second bevel gear 22 meshing with the first bevel gear 21. The first bevel gear 21 is connected to the output shaft of the driving motor 11 and moves along with the output shaft, and the enveloping worm 3 is connected to the second bevel gear 22 and moves along with the second bevel gear 22. The output shaft of the driving motor 11 rotates, driving the first bevel gear 21 to rotate, the first bevel gear 21 drives the second bevel gear 22 to rotate, and the second bevel gear 22 then drives the enveloping worm 3 to rotate, thereby driving the enveloping worm wheel 51 to rotate.

[0042] Of course, it can be understood that in order to enable the driving mechanism 1 to be arranged to extend along the second direction and at the same time be able to drive the enveloping worm 3 to rotate, the driving mechanism 1 can also be set as a motor. At this time, the transmission component can be a gear transmission mechanism such as a skew-intersecting spatial transmission mechanism, or the transmission component can also be a chain transmission mechanism, a universal joint transmission mechanism or a ratchet and pawl mechanism.

[0043] Please refer to Figure 1 、 Figure 3 、 Figure 4, a bevel gear box housing 6 is further provided. The bevel gear box housing 6 has a third opening end 61 and a fourth opening end 62. The opening direction of the third opening end 61 is horizontally perpendicular to the opening direction of the fourth opening end 62. The first bevel gear 21 is inserted into the bevel gear box housing 6 along the third opening end 61, and one end of the enveloping worm 3 is inserted into the bevel gear box housing 6 along the fourth opening end 62. The second bevel gear 22 is connected to one end of the enveloping worm 3. The third opening end 61 and the fourth opening end 62 of the bevel gear box housing 6 are respectively fixedly connected to the fixing part 112 of the driving motor 11 and the enveloping housing 4.

[0044] Please refer to Figure 3 , Figure 4 , preferably, the output shaft of the driving motor 11 is splined to the first bevel gear 21. It not only has high load-bearing capacity, good centering, good guiding property, uniform force, but also can quickly transmit motion and power, with high standardization degree and reduced production cost. Preferably, the output shaft is a spline shaft 111, and a spline hole 211 is provided inside one shaft end of the first bevel gear 21 close to the driving motor 11, and the spline shaft 111 is fitted into the spline hole 211. However, it can be understood that the output shaft of the driving motor 11 and the first bevel gear 21 can also be fixedly connected by pins, set screws, flanges, etc., which are not limited herein.

[0045] In order to improve the connection stability and rapidity between the second bevel gear 22 and the enveloping worm 3, please refer to Figures 5 - 7 , preferably, the second bevel gear 22 is keyed to the enveloping worm 3. Specifically, at least one first groove 221 is provided on the inner peripheral wall of the second bevel gear 22, at least one second groove 31 is provided on the outer peripheral wall of one end of the enveloping worm 3, and at least one flat key 701 is further provided. One part of the flat key 701 is fitted into the first groove 221, and the other part is fitted into the second groove 31.

[0046] In this embodiment, a first annular step 32 is further provided at one end of the enveloping worm 3, a tooth clearance adjusting gasket 33 is provided at the first annular step 32, and the second bevel gear 22 abuts against the tooth clearance adjusting gasket 33. Due to possible dimensional deviations in the processing of the first bevel gear 21 and the second bevel gear 22, the meshing state of the first bevel gear 21 and the second bevel gear 22 is adjusted to the best state through the tooth clearance adjusting gasket 33.

[0047] A first end cover 702 and a second end cover 703 are also provided. A first bearing 704 is provided on the first bevel gear 21. The first end cover 702 is threadedly connected to the bevel gear box housing 6 along the third open end 61 and abuts against the first bearing 704. Two second bearings 705 are provided on the enveloping worm 3. One of the second bearings 705 is provided at the other end of the enveloping worm 3 and abuts against the enveloping housing 4 and the enveloping worm 3 respectively. The second end cover 703 is threadedly connected to the enveloping housing 4 and abuts against the other second bearing 705. The outer ring of the first bearing 704 is limited within the bevel gear box housing 6, and the inner ring of the first bearing 704 is fitted on the first bevel gear 21. By pressing the first bevel gear 21 with the first end cover 702, its axial movement is avoided, ensuring the stable rotation of the first bevel gear 21. Preferably, the first bearing 704 is a tapered roller bearing. To further improve the stability of the rotation of the first bevel gear 21, a deep groove ball bearing 706 is preferably fitted on the first bevel gear 21. By pressing the other second bearing 705 with the second end cover 703, the enveloping worm 3 is pressed, avoiding the axial movement of the enveloping worm 3 and ensuring the stable rotation of the enveloping worm 3. Preferably, the second bearing 705 is a flat thrust bearing. To further improve the stability of the rotation of the enveloping worm 3, two first oil-free bearings 707 are preferably fitted on the enveloping worm 3.

[0048] To avoid the axial movement of the enveloping worm gear 51, preferably, an enveloping cover plate 43 is fixed to the first open end 41 of the enveloping housing 4, and the two shaft ends of the enveloping worm gear 51 abut against the enveloping housing 4 and the enveloping cover plate 43 respectively. Please refer to Figures 8 - 10 , preferably, the connecting member 52 includes a cylindrical connecting portion 521. The cylindrical connecting portion 521 is connected to the shaft end of the enveloping worm gear 51. The outer diameter of the cylindrical connecting portion 521 is smaller than the outer diameter of the enveloping worm gear 51, and a second annular step 531 is formed between the cylindrical connecting portion 521 and the enveloping worm gear 51. A third annular step 411 is formed at the first open end 41 of the enveloping housing 4. The inner wall of the enveloping housing 4 abuts against the second annular step 531 close to the second open end 42. The enveloping cover plate 43 is provided with an annular protrusion 431, and the annular protrusion 431 is fixed within the third annular step 411, thereby restricting the axial movement of the enveloping worm gear 51 and ensuring the radial rotation of the enveloping worm gear 51. To improve the smoothness of the rotation of the enveloping worm gear 51, preferably, second oil-free bearings 532 are provided at both second annular steps 531, and the inner wall of the enveloping housing 4 and the enveloping cover plate 43 abut against the two second oil-free bearings 532 respectively. Preferably, the cylindrical connecting portion 521 is integrally formed and connected to the enveloping worm gear 51.

[0049] Preferably, a stop member 44 extends axially along the outer peripheral wall of the enveloping cover plate 43. The rotation angle of the enveloping worm gear 51 is limited by the stop member 44 to prevent the rotation angle from being too large when the control circuit is abnormal. Specifically, the stop member 44 includes two stop blocks 441 arranged at intervals.

[0050] To facilitate the fixation of the crossbeam square tube to the speed reducer, an installation component is further included. The installation component includes two installation members 8 arranged oppositely along the second direction, and the two installation members 8 are respectively fixedly connected to the two connecting members 52. The crossbeam square tube is fixedly connected to the two installation members 8. When the enveloping worm wheel 51 is driven to rotate, the crossbeam square tube on the two installation members 8 can be driven to rotate through the two connecting members 52, thereby driving the photovoltaic panel on the crossbeam square tube to rotate.

[0051] The connecting member 52 further includes a polygonal connecting portion. The installation member 8 includes a first polygonal installation portion and a second polygonal installation portion. Both the first polygonal installation portion and the second polygonal installation portion are hollow inside. The polygonal connecting portion is in shape matching and fixedly connected with the first polygonal installation portion. Specifically, the polygonal connecting portion is integrally formed and connected with the cylindrical connecting portion 521. The first polygonal installation portion and the second polygonal installation portion are integrally formed and connected. The polygonal connecting portion is a hexagonal connecting portion 522, the first polygonal installation portion is a hexagonal installation portion 81, and the second polygonal installation portion is a quadrilateral installation portion 82. During installation, the hexagonal connecting portion 522 is placed into the hexagonal installation portion 81 and fixedly connected by a rivet 83. The crossbeam square tube for installing the photovoltaic panel is fixedly connected to the two quadrilateral installation portions 82.

[0052] The working principle of the present invention is as follows:

[0053] The spline shaft 111 of the driving motor 11 is inserted into the spline hole 211 of the first bevel gear 21. When the driving motor 11 works, the first bevel gear 21 is driven to rotate through the spline shaft 111, thereby driving the second bevel gear 22 to rotate. The second bevel gear 22 then drives the enveloping worm 3 to rotate. The enveloping worm 3 drives the enveloping worm wheel 51 to rotate. The enveloping worm wheel 51 then drives the hexagonal installation portion 81 and the quadrilateral installation portion 82 to rotate through the hexagonal connecting portion 522. The quadrilateral installation portion 82 is fixedly connected to the crossbeam square tube, so as to drive the crossbeam square tube to rotate. The photovoltaic panel is fixed to the crossbeam square tube through purlins, so as to finally drive the photovoltaic panel to rotate.

[0054] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0055] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only one independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A modulus quadratic enveloping worm and worm gear reducer, characterized in that Comprising: A driving mechanism; A transmission assembly, connected to the driving mechanism and driven by the driving mechanism; An enveloping worm, connected to the transmission assembly, and the transmission assembly drives the enveloping worm to rotate; An enveloping housing, the enveloping worm is disposed in the enveloping housing along a first direction, and the enveloping housing has a first opening end and a second opening end oppositely disposed along a second direction; An enveloping worm gear assembly, including an enveloping worm gear and two connecting members respectively disposed at two axial ends of the enveloping worm gear and extending along the second direction. The enveloping worm gear is disposed in the enveloping housing and meshes with the enveloping worm, and the two connecting members respectively extend out of the first opening end and the second opening end of the enveloping housing; Wherein, the first direction is perpendicular to the second direction.

2. The modular quadratic enveloping worm and worm gear reducer according to claim 1, characterized in that, The driving mechanism extends along the second direction.

3. The modulus quadratic enveloping worm and worm gear speed reducer according to claim 1 or 2, characterized in that The driving mechanism includes a driving motor, the transmission assembly includes a first bevel gear and a second bevel gear meshing with the first bevel gear. The first bevel gear is connected to the output shaft of the driving motor and moves along with the output shaft, and the enveloping worm is connected to the second bevel gear and moves along with the second bevel gear.

4. The modular quadratic envelope worm and worm gear reducer according to claim 3, characterized in that, A bevel gear box housing is further provided. The bevel gear box housing has a third opening end and a fourth opening end, and the opening directions of the third opening end and the fourth opening end are horizontally perpendicular to each other. The first bevel gear is placed into the bevel gear box housing along the third opening end, one end of the enveloping worm is placed into the bevel gear box housing along the fourth opening end, the second bevel gear is connected to one end of the enveloping worm, and the third opening end and the fourth opening end of the bevel gear box housing are respectively fixedly connected to the fixing part of the driving motor and the enveloping housing.

5. The modulus quadratic enveloping worm and worm gear speed reducer according to claim 3, characterized in that, The output shaft of the driving motor is spline-connected to the first bevel gear.

6. The modulus secondary enveloping worm and worm gear speed reducer according to claim 3, characterized in that, The second bevel gear is flat-key connected to the enveloping worm.

7. The modular quadratic enveloping worm and worm gear reducer according to claim 1, characterized in that, A first end cover and a second end cover are further provided. A first bearing is provided on the first bevel gear. The first end cover is threadedly connected into the bevel gear box housing along the third opening end and abuts against the first bearing. Two second bearings are provided on the enveloping worm. One of the second bearings is disposed at the other end of the enveloping worm and abuts against the enveloping housing and the enveloping worm respectively. The second end cover is threadedly connected into the enveloping housing and abuts against the other second bearing.

8. The modulus quadratic envelope worm and worm gear speed reducer according to claim 1, characterized in that, A covering plate is fixed to the first opening end of the enveloping housing, and two axial ends of the enveloping worm gear respectively abut against the enveloping housing and the covering plate.

9. The modulus quadratic envelope worm and worm gear speed reducer according to claim 8, characterized in that, A stop member extends axially along the outer peripheral wall of the covering plate.

10. The modulus secondary enveloping worm and worm gear reducer according to claim 1, characterized in that, An installation assembly is further included. The installation assembly includes two installation members oppositely disposed along the second direction, and the two installation members are respectively fixedly connected to the two connecting members.

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