Solar integrated water purification station for multi-scene application

Abstract

The invention relates to the technical field of water purification equipment, in particular to a multi-scene application solar integrated water purification station which comprises a water purification device body. A mounting plate is arranged at the top of the water purifying device body; the mounting plate is provided with a plurality of solar modules; the solar module comprises a solar panel, a mounting seat, a driving seat and a rotating seat; a first rotating disc and a second rotating disc are rotationally arranged in the middle of the mounting seat; and the top of the first rotating disc is connected with a first bevel gear. According to the invention, by rotating the rotating seat, when the rotating seat drives the first rotating disc to rotate, the first rotating disc can drive the solar panel to rotate through the driving assembly; when the rotating seat drives the second rotating disc to rotate, the second rotating disc can drive the solar panel to swing through the driving assembly; according to the embodiment of the invention, only one driving piece is needed to rotate the rotating seat, so that the functions of rotating and swinging the solar panel can be realized, and the cost is effectively saved.

Description

Technical Field

[0001] The present invention relates to the technical field of water purification equipment, and in particular to a solar-powered integrated water purification station for multi-scenario applications. Background Art

[0002] In the development of modern water purification technology, the introduction of photovoltaic systems not only provides stable power for water purification equipment but also embodies the concepts of green environmental protection and energy conservation. Using solar energy as a clean energy source can significantly reduce energy consumption in the water purification process and reduce dependence on the traditional power grid, making it particularly suitable for remote areas or places without grid coverage.

[0003] However, despite the promising application prospects of photovoltaic systems in water purification equipment, traditional photovoltaic system installation methods have significant limitations. First, most of these systems use a fixed installation method, which means that once the solar panel angle is determined, it is difficult to adjust, which greatly limits the photovoltaic system's power generation efficiency. Second, the fixed installation method makes the photovoltaic system less adaptable to complex and changing installation environments and water purification needs. It cannot flexibly adjust to changes in sunlight conditions, thus affecting the operating efficiency and performance of the water purification equipment.

[0004] Although there are devices on the market that can adjust the angle of solar panels, multiple driving components are required to control the different rotation angles of the solar panels, which has the problem of complex structure and high cost. Summary of the Invention

[0005] The purpose of the present invention is to address the above-mentioned deficiencies in the prior art and to provide a solar integrated water purification station with multi-scenario applications.

[0006] The object of the present invention is achieved through the following technical solution: a solar integrated water purification station for multi-scenario application, comprising a water purification device body; a mounting plate is provided on the top of the water purification device body; the mounting plate is provided with multiple solar modules;

[0007] The solar module includes a solar panel, a mounting base provided on the mounting plate, a driving base rotatably provided on the mounting base, and a rotating base rotatably provided on the driving base; a linkage assembly is provided between the rotating base and the driving base;

[0008] A first rotating disk and a second rotating disk are rotatably provided in the middle of the mounting seat; a driving component is provided between the first rotating disk, the second rotating disk and the solar panel.

[0009] The present invention is further configured such that the drive assembly includes a first bevel gear, a second bevel gear, a third bevel gear, a fourth bevel gear and a one-way bevel gear;

[0010] The first bevel gear and the one-way bevel gear are arranged on the same axis; the second bevel gear is vertically meshed with the first bevel gear; the third bevel gear is vertically meshed with the second bevel gear; the fourth bevel gear is vertically meshed with the one-way bevel gear; a connecting rod is provided between the third bevel gear and the fourth bevel gear;

[0011] The first bevel gear is connected to the first rotating disk; the third bevel gear is connected to the solar panel.

[0012] The present invention is further configured as follows: a sleeve is provided on the top of the second rotating disk; a first connecting arm and a second connecting arm are provided on the top of the sleeve and are arranged opposite to each other; the second bevel gear is rotatably provided on the first connecting arm; a bracket is provided between the third bevel gear and the solar panel; one end of the connecting rod is rotatably connected to the bracket; the fourth bevel gear is rotatably provided on the other end of the connecting rod; and the middle part of the connecting rod is hinged to the second connecting arm.

[0013] The present invention is further configured such that a coil spring is provided between the other end of the connecting rod and the fourth bevel gear.

[0014] The present invention is further configured such that a connecting column is provided in the middle of the mounting seat; the connecting column is provided through the first rotating disk and the first bevel gear; the one-way bevel gear is rotatably provided on the top of the connecting column;

[0015] A connecting rod is provided on the top of the sleeve; the connecting rod is rotatably arranged on the connecting column.

[0016] The present invention is further configured such that a placement cavity is provided in the middle of the rotating seat; the first rotating disk and the second rotating disk are rotatably disposed in the placement cavity;

[0017] A locking assembly is provided between the rotating seat, the first rotating disk and the second rotating disk.

[0018] The present invention is further configured such that the locking assembly includes a plurality of first fixing grooves provided along the outer periphery of the first rotating disk, a plurality of second fixing grooves provided along the outer periphery of the second rotating disk, a first fixing pin telescopically provided on the rotating base, and a second fixing pin telescopically provided on the rotating base;

[0019] The rotating seat is provided with a first telescopic slot and a second telescopic slot along the circumferential direction of the placement cavity; the first fixing pin is telescopically arranged in the first telescopic slot; a first tension spring is provided between the first fixing pin and the bottom wall of the first telescopic slot; the first fixing pin is used to be clamped with the first fixing slot; the second fixing pin is telescopically arranged in the second telescopic slot; a second tension spring is provided between the second fixing pin and the bottom wall of the second telescopic slot; the second fixing pin is used to be clamped with the second fixing slot.

[0020] The present invention is further configured such that a first permanent magnet is provided at one end of the first fixing pin close to the bottom wall of the first telescopic slot; a second permanent magnet is provided at one end of the second fixing pin close to the bottom wall of the second telescopic slot;

[0021] A driving cavity is provided in the middle of the driving seat; the rotating seat is rotatably provided in the driving cavity; a third permanent magnet is provided on the inner wall of the driving cavity; the magnetic pole directions of the first permanent magnet, the second permanent magnet and the third permanent magnet are the same.

[0022] The present invention is further configured such that the linkage assembly includes an annular groove circumferentially provided on the inner wall of the driving cavity and a linkage pin telescopically provided on the outer wall of the rotating seat;

[0023] The annular groove is provided with a plurality of limiting grooves; one end of the limiting groove is provided with an inclined surface; the other end of the limiting groove is provided with a blocking step; the linkage pin is movably provided in the annular groove.

[0024] The present invention is further configured such that the outer wall of the driving seat is provided with ratchet teeth; and the mounting seat is provided with a pawl that cooperates with the ratchet teeth.

[0025] The beneficial effects of the present invention are as follows: the present invention rotates the rotating seat, and when the rotating seat drives the first rotating disk to rotate, the first rotating disk can drive the solar panel to rotate through the driving component; when the rotating seat drives the second rotating disk to rotate, the second rotating disk can drive the solar panel to swing through the driving component; this embodiment only requires one driving component to rotate the rotating seat, that is, it can realize the functions of rotating and swinging the solar panel, effectively saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The invention is further described with reference to the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the invention. A person skilled in the art can obtain other drawings based on the following drawings without making any creative effort.

[0027] Figure 1 It is a structural schematic diagram of the present invention;

[0028] Figure 2 It is a schematic structural diagram of the solar module of the present invention;

[0029] Figure 3 is a schematic structural diagram of the solar module of the present invention from another perspective;

[0030] Figure 4 is a cross-sectional view of the solar module of the present invention with the solar panel hidden;

[0031] Figure 5 This is a schematic diagram of the structure of the mounting seat, the driving seat and the rotating seat of the present invention;

[0032] Figure 6 It is a cross-sectional view of the mounting seat, the driving seat and the rotating seat of the present invention;

[0033] Figure 7 This is an exploded view of the structure of the mounting seat, the driving seat and the rotating seat of the present invention;

[0034] Among them: 1. Water purification device body; 11. Mounting plate; 12. Solar module; 2. Solar panel; 21. Bracket; 3. Mounting seat; 31. Connecting column; 32. Ratchet; 4. Drive seat; 41. Drive cavity; 42. Third permanent magnet; 43. Annular groove; 44. Limiting groove; 45. Inclined surface; 46. Blocking step; 47. Ratchet; 5. Rotating seat; 51. Placement cavity; 52. First telescopic slot; 53. First fixing pin; 54. First tension spring; 55. First permanent magnet ; 56. Second telescopic slot; 57. Second fixed pin; 58. Second tension spring; 59. Second permanent magnet; 50. Linkage pin; 6. First rotating disk; 61. First fixed slot; 7. Second rotating disk; 71. Sleeve; 72. Connecting rod; 73. First connecting arm; 74. Second connecting arm; 75. Connecting rod; 76. Coil spring; 77. Second fixed slot; 81. First bevel gear; 82. Second bevel gear; 83. Third bevel gear; 84. Fourth bevel gear; 85. One-way bevel gear. DETAILED DESCRIPTION

[0035] The present invention is further described with reference to the following examples.

[0036] Depend on Figures 1 to 7 It can be seen that the solar integrated water purification station for multiple scenarios described in this embodiment includes a water purification device body 1; a mounting plate 11 is provided on the top of the water purification device body 1; and a plurality of solar modules 12 are provided on the mounting plate 11;

[0037] The solar module 12 includes a solar panel 2, a mounting base 3 provided on a mounting plate 11, a driving base 4 rotatably provided on the mounting base 3, and a rotating base 5 rotatably provided on the driving base 4; a linkage assembly is provided between the rotating base 5 and the driving base 4; wherein the rotating base 5 is connected to a driving member, which may be a motor, for driving the rotating base 5 to rotate, although the driving member is not shown in the figure;

[0038] A first rotating disk 6 and a second rotating disk 7 are rotatably provided in the middle of the mounting base 3 ; a driving assembly is provided between the first rotating disk 6 , the second rotating disk 7 and the solar panel 2 .

[0039] Specifically, the solar integrated water purification station for multiple scenarios described in this embodiment can effectively utilize solar energy by providing a mounting plate 11 on the top of the water purification device body 1 and arranging multiple solar modules 12 on the mounting plate 11;

[0040] In addition, this embodiment can rotate the rotating base 5. When the rotating base 5 drives the first rotating disk 6 to rotate, the first rotating disk 6 can drive the solar panel 2 to rotate through the driving component; when the rotating base 5 drives the second rotating disk 7 to rotate, the second rotating disk 7 can drive the solar panel 2 to swing through the driving component; this embodiment only requires one driving component to rotate the rotating base 5, that is, it can realize the function of rotating and swinging the solar panel 2, which effectively saves costs.

[0041] The present embodiment describes a solar integrated water purification station for multi-scenario applications, wherein the driving assembly includes a first bevel gear 81, a second bevel gear 82, a third bevel gear 83, a fourth bevel gear 84 and a one-way bevel gear 85; the first bevel gear 81 and the one-way bevel gear 85 are arranged on the same axis; the second bevel gear 82 is vertically meshed with the first bevel gear 81; the third bevel gear 83 is vertically meshed with the second bevel gear 82; the fourth bevel gear 84 is vertically meshed with the one-way bevel gear 85; a connecting rod 75 is provided between the third bevel gear 83 and the fourth bevel gear 84; the first bevel gear 81 is connected to the first rotating disk 6; the third bevel gear 83 is connected to the solar panel 2. In the embodiment of the solar-powered integrated water purification station for multiple scenarios, a sleeve 71 is provided on the top of the second rotating disk 7; a first connecting arm 73 and a second connecting arm 74 are provided on the top of the sleeve 71 in opposite positions; the second bevel gear 82 is rotatably mounted on the first connecting arm 73; a bracket 21 is provided between the third bevel gear 83 and the solar panel 2; one end of the connecting rod 75 is rotatably connected to the bracket 21; the fourth bevel gear 84 is rotatably mounted on the other end of the connecting rod 75; and the middle portion of the connecting rod 75 is hinged to the second connecting arm 74. In the embodiment of the solar-powered integrated water purification station for multiple scenarios, a coil spring 76 is provided between the other end of the connecting rod 75 and the fourth bevel gear 84. The present embodiment describes a solar integrated water purification station for multi-scenario applications, in which a connecting column 31 is provided in the middle of the mounting base 3; the connecting column 31 passes through the first rotating disk 6 and the first bevel gear 81; the one-way bevel gear 85 is rotatably arranged on the top of the connecting column 31; a connecting rod 72 is provided on the top of the sleeve 71; the connecting rod 72 is rotatably arranged on the connecting column 31.

[0042] Specifically, in the solar integrated water purification station for multiple scenarios described in this embodiment, when the first rotating disk 6 rotates, the first rotating disk 6 drives the first bevel gear 81 to rotate, and the first bevel gear 81 drives the second bevel gear 82 to rotate. Since a coil spring 76 is provided between the other end of the connecting rod 75 and the fourth bevel gear 84, the fourth bevel gear 84 cannot overcome the effect of the coil spring 76 to rotate. As a result, when the second bevel gear 82 rotates, it can drive the third bevel gear 83 to rotate along its own axis, thereby driving the solar panel 2 to rotate around the axis of the third bevel gear 83 through the bracket 21;

[0043] When the second rotating disk 7 rotates, the second rotating disk 7 drives the first connecting arm 73 and the second connecting arm 74 to rotate around the axis of the one-way bevel gear 85 through the sleeve 71. Since the fourth bevel gear 84 is vertically meshed with the one-way bevel gear 85 and the one-way bevel gear 85 cannot rotate at this time, when the second connecting arm 74 rotates around the axis of the one-way bevel gear 85, the fourth bevel gear 84 can rotate along its own axis. In the process of the fourth bevel gear rotating along its own axis, the middle part of the connecting rod 75 rotates at the hinge of the second connecting arm 74, thereby driving the solar panel 2 to swing around the axis of the fourth bevel gear through the bracket 21.

[0044] This embodiment describes a solar integrated water purification station for multi-scenario applications, wherein a placement cavity 51 is provided in the middle of the rotating seat 5; the first rotating disk 6 and the second rotating disk 7 are rotated in the placement cavity 51; a locking assembly is provided between the rotating seat 5, the first rotating disk 6 and the second rotating disk 7. The present embodiment describes a solar integrated water purification station for multi-scenario applications, wherein the locking assembly includes a plurality of first fixed grooves 61 arranged along the outer periphery of the first rotating disk 6, a plurality of second fixed grooves 77 arranged along the outer periphery of the second rotating disk 7, a first fixed pin 53 telescopically arranged on the rotating seat 5, and a second fixed pin 57 telescopically arranged on the rotating seat 5; the rotating seat 5 is provided with a first telescopic groove 52 and a second telescopic groove 56 along the circumferential direction of the placement cavity 51; the first fixed pin 53 is telescopically arranged in the first telescopic groove 52; a first tension spring 54 is provided between the first fixed pin 53 and the bottom wall of the first telescopic groove 52; the first fixed pin 53 is used to engage with the first fixed groove 61; the second fixed pin 57 is telescopically arranged in the second telescopic groove 56; a second tension spring 58 is provided between the second fixed pin 57 and the bottom wall of the second telescopic groove 56; the second fixed pin 57 is used to engage with the second fixed groove 77. In the embodiment of the present invention, a solar integrated water purification station with multiple scenarios is provided, wherein the first fixed pin 53 is provided with a first permanent magnet 55 at one end near the bottom wall of the first telescopic slot 52; the second fixed pin 57 is provided with a second permanent magnet 59 at one end near the bottom wall of the second telescopic slot 56; a driving cavity 41 is provided in the middle of the driving seat 4; the rotating seat 5 is rotatably provided in the driving cavity 41; a third permanent magnet 42 is provided on the inner wall of the driving cavity 41; the magnetic pole direction of the first permanent magnet 55, the magnetic pole direction of the second permanent magnet 59, and the magnetic pole direction of the third permanent magnet 42 are the same. In the embodiment of the present invention, a solar integrated water purification station with multiple scenarios is provided, wherein the linkage assembly includes an annular groove 43 circumferentially provided on the inner wall of the driving cavity 41 and a linkage pin 50 telescopically provided on the outer wall of the rotating seat 5; the annular groove 43 is provided with a plurality of limiting grooves 44; one end of the limiting groove 44 is provided with an inclined surface 45; the other end of the limiting groove 44 is provided with a blocking step 46; and the linkage pin 50 is movably provided in the annular groove 43. In the solar integrated water purification station for multiple scenarios described in this embodiment, the outer wall of the driving seat 4 is provided with a ratchet 47 ; the mounting seat 3 is provided with a pawl 32 that cooperates with the ratchet 47 .

[0045] Specifically, in the solar integrated water purification station for multiple scenarios described in this embodiment, under the action of the first tension spring 54 and the second tension spring 58, the first fixing pin 53 retracts into the first telescopic groove 52, and the second fixing pin 57 retracts into the second telescopic groove 56; at this time, when the rotating seat 5 rotates, it cannot drive the first rotating disk 6 and the second rotating disk 7 to rotate.

[0046] When the rotating seat 5 rotates clockwise, the driving seat 4 is engaged with the ratchet 47 and the pawl 32, and the driving seat 4 and the mounting seat 3 form an integrated structure. When the rotating seat 5 rotates clockwise, when the linkage pin 50 moves to the limiting groove 44, it can re-enter the annular groove 43 through the inclined surface 45. That is to say, when the rotating seat 5 rotates clockwise, the rotating seat 5 always rotates relative to the driving seat 4.

[0047] When the rotating seat 5 rotates clockwise, the first permanent magnet 55 is aligned with the third permanent magnet 42, and the linkage pin 50 just falls into one of the limit slots 44, and the magnetic directions of the first permanent magnet 55 and the third permanent magnet 42 are the same, so that the first fixing pin 53 is retracted to overcome the effect of the first tension spring 54, and the first fixing pin 53 extends into the placement cavity 51 and engages with the first fixing slot 61 of the first rotating disk 6; at this time, the rotating seat 5 is driven to rotate in the opposite direction. Due to the effect of the blocking step 46, when the rotating seat 5 rotates in the opposite direction, the rotating seat 5 drives the driving seat 4 to rotate synchronously, and the ratchet 47 and the pawl 32 do not hinder the rotation of the driving seat 4. In the process of the rotating seat 5 driving the driving seat 4 to rotate synchronously, the relative position between the first permanent magnet 55 and the third permanent magnet 42 will not change, that is, when the rotating seat 5 rotates in the opposite direction, it can drive the driving seat 4 and the first rotating disk 6 to rotate in the opposite direction synchronously, so as to drive the solar panel 2 to rotate around the axis of the third bevel gear 83.

[0048] When it is necessary to drive the second rotating disk 7 to rotate, it is only necessary to rotate the driving seat 4 clockwise again, so that the third permanent magnet 42 is separated from the first permanent magnet 55, and the first fixing pin 53 is retracted into the first telescopic slot 52 under the action of the first tension spring 54; until the rotating seat 5 is rotated to the point where the second permanent magnet 59 is aligned with the third permanent magnet 42, the linkage pin 50 just falls into one of the limit slots 44, and the second permanent magnet 59 has the same magnetic direction as the third permanent magnet 42, so that the second fixing pin 57 is retracted to overcome the action of the second tension spring 58, and the second fixing pin 57 is extended to the placement cavity 51 and aligned with the second rotating disk 7 The second fixing groove 77 is engaged; at this time, the rotating seat 5 is driven to rotate in the opposite direction. Due to the effect of the blocking step 46, when the rotating seat 5 rotates in the opposite direction, the rotating seat 5 drives the driving seat 4 to rotate synchronously, and the ratchet 47 and the pawl 32 do not hinder the rotation of the driving seat 4. In the process of the rotating seat 5 driving the driving seat 4 to rotate synchronously, the relative position between the second permanent magnet 59 and the third permanent magnet 42 will not change. In other words, when the rotating seat 5 rotates in the opposite direction, it can drive the driving seat 4 and the second rotating disk 7 to rotate in the opposite direction synchronously, so as to drive the solar panel 2 to swing around the axis of the fourth bevel gear 84.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A solar integrated water purification station for multi-scenario applications, characterized by: It comprises a water purification device body; a mounting plate is provided on the top of the water purification device body; and a plurality of solar modules are provided on the mounting plate; The solar module comprises a solar panel, a mounting seat arranged on the mounting plate, a driving seat rotatably arranged on the mounting seat, and a rotating seat rotatably arranged on the driving seat; a linkage assembly is arranged between the rotating seat and the driving seat; A first rotating disk and a second rotating disk are rotatably arranged in the middle of the mounting seat; a driving component is arranged between the first rotating disk, the second rotating disk and the solar panel.

2. According to the multi-scenario application solar integrated water purification station of claim 1, it is characterized by: The driving assembly includes a first bevel gear, a second bevel gear, a third bevel gear, a fourth bevel gear and a one-way bevel gear; The first bevel gear and the one-way bevel gear are arranged on the same axis; the second bevel gear is vertically meshed with the first bevel gear; the third bevel gear is vertically meshed with the second bevel gear; the fourth bevel gear is vertically meshed with the one-way bevel gear; a connecting rod is arranged between the third bevel gear and the fourth bevel gear; The first bevel gear is connected to the first rotating disk; the third bevel gear is connected to the solar panel.

3. According to the multi-scenario application solar integrated water purification station of claim 2, it is characterized by: A sleeve is provided on the top of the second rotating disk; a first connecting arm and a second connecting arm are provided on the top of the sleeve which are arranged opposite to each other; the second bevel gear is rotatably arranged on the first connecting arm; a bracket is provided between the third bevel gear and the solar panel; one end of the connecting rod is rotatably connected to the bracket; the fourth bevel gear is rotatably arranged on the other end of the connecting rod; and the middle part of the connecting rod is hinged to the second connecting arm.

4. According to claim 3, a solar integrated water purification station for multiple scenarios is characterized in that: A coil spring is arranged between the other end of the connecting rod and the fourth bevel gear.

5. According to claim 3, a solar integrated water purification station for multiple scenarios is characterized by: A connecting column is provided in the middle of the mounting seat; the connecting column penetrates the first rotating disk and the first bevel gear; the one-way bevel gear is rotatably arranged on the top of the connecting column; A connecting rod is provided on the top of the sleeve; the connecting rod is rotatably arranged on the connecting column.

6. The solar integrated water purification station for multiple scenarios according to claim 1 is characterized by: A placement cavity is provided in the middle of the rotating seat; the first rotating disk and the second rotating disk are rotatably disposed in the placement cavity; A locking assembly is provided between the rotating seat, the first rotating disk and the second rotating disk.

7. The solar integrated water purification station for multiple scenarios according to claim 6 is characterized by: The locking assembly includes a plurality of first fixing grooves arranged along the outer circumference of the first rotating disk, a plurality of second fixing grooves arranged along the outer circumference of the second rotating disk, a first fixing pin telescopically arranged on the rotating seat, and a second fixing pin telescopically arranged on the rotating seat; The rotating seat is provided with a first telescopic groove and a second telescopic groove along the circumferential direction of the placement cavity; the first fixing pin is telescopically arranged in the first telescopic groove; a first tension spring is provided between the first fixing pin and the bottom wall of the first telescopic groove; the first fixing pin is used to be clamped with the first fixing groove; the second fixing pin is telescopically arranged in the second telescopic groove; a second tension spring is provided between the second fixing pin and the bottom wall of the second telescopic groove; the second fixing pin is used to be clamped with the second fixing groove.

8. The solar integrated water purification station for multiple scenarios according to claim 7 is characterized by: A first permanent magnet is disposed at one end of the first fixing pin close to the bottom wall of the first telescopic slot; a second permanent magnet is disposed at one end of the second fixing pin close to the bottom wall of the second telescopic slot; A driving cavity is provided in the middle of the driving seat; the rotating seat is rotatably arranged in the driving cavity; A third permanent magnet is disposed on the inner wall of the driving cavity; the magnetic pole directions of the first permanent magnet, the second permanent magnet and the third permanent magnet are the same.

9. The solar integrated water purification station for multiple scenarios according to claim 8 is characterized by: The linkage assembly comprises an annular groove arranged on the inner wall of the driving cavity along the circumferential direction and a linkage pin telescopically arranged on the outer wall of the rotating seat; The annular groove is provided with a plurality of limiting grooves; one end of the limiting groove is provided with an inclined surface; the other end of the limiting groove is provided with a blocking step; and the linkage pin is movably arranged in the annular groove.

10. The solar integrated water purification station for multiple scenarios according to claim 1 is characterized by: The outer wall of the driving seat is provided with ratchet teeth; the mounting seat is provided with a pawl matched with the ratchet teeth.

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