Gear box tilting device

Abstract

The utility model discloses a gear box tilting device which comprises a driving support and a driving support, the driving support comprises a base, a driving fixed frame, a driving movable frame and a driver, the driving fixed frame is horizontally arranged above the base and can move up and down, and the driving movable frame is rotatably arranged on the driving fixed frame and is in transmission connection with the driver arranged on the driving fixed frame; the passive support comprises a passive fixed frame and a passive movable frame, and the passive movable frame is rotatably arranged on the passive fixed frame; wherein the driven support and the driving support are arranged at intervals along the same horizontal line, and the driving movable frame and the driven movable frame rotate in the direction perpendicular to the horizontal line. According to the invention, the continuous change angle of the gear box under the influence of water ripples at any installation inclination angle can be simulated, so that the gear pair contact spot inspection data recorded when the gear box leaves a factory can provide sufficient and reliable data for actual ship installation and subsequent maintenance of the gear box.

Description

Technical Field

[0001] The utility model relates to the technical field of gear box installation, and more specifically to a gear box tilting device. Background Art

[0002] Marine gearboxes are generally installed on board at a certain inclination angle. The gear pair contact spots of the gearbox are different in the inclined state and the horizontal state. Therefore, before leaving the factory, the gearbox needs to be tilted at a certain angle to check the gear pair contact spots. After the gearbox is installed on board, the gear pair contact spots are reviewed and compared with the factory inspection results to evaluate whether the installation of the marine gearbox is qualified.

[0003] Due to factory restrictions, the gearbox can only select a fixed installation inclination angle for gear pair contact spot inspection according to installation requirements. However, the gearbox is affected by water fluctuations under actual ship use conditions, and its inclination angle will change slightly. Therefore, the factory inspection result at a single angle cannot well evaluate whether the gearbox installation is qualified.

[0004] In summary, how to solve the problem that the current marine gearbox cannot be simulated for gear pair contact spot inspection under actual ship use conditions when it leaves the factory is a problem that needs to be urgently solved by technical personnel in this field. Utility Model Content

[0005] In view of this, the purpose of the utility model is to provide a gearbox tilting device, which can enable the gearbox to simulate the continuously changing angle affected by water ripples at any installation inclination angle, so that the gear pair contact spot inspection data recorded when the gearbox leaves the factory can provide sufficient and reliable data for the actual ship installation and subsequent maintenance of the gearbox.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A gear box tilting device, comprising:

[0008] The active support comprises a base, an active fixed frame, an active movable frame and a driver, wherein the active fixed frame is horizontally and movable up and down and is arranged above the base, and the active movable frame is rotatably arranged on the active fixed frame and is transmission-connected to the driver arranged on the active fixed frame;

[0009] The passive support comprises a passive fixed frame and a passive movable frame, wherein the passive movable frame is rotatably arranged on the passive fixed frame;

[0010] Among them, the passive support and the active support are arranged at intervals along the same horizontal line, and both the active movable frame and the passive movable frame rotate around a direction perpendicular to the horizontal line. The top surfaces of the active movable frame and the passive movable frame are respectively used to support the two sides of the gearbox. When both the active movable frame and the passive movable frame are in a horizontal state, the vertical height from the top surface of the active movable frame to the lowermost end of the active fixed frame is equal to the vertical height from the top surface of the passive movable frame to the lowermost end of the passive fixed frame.

[0011] Preferably, the active fixed frame is provided with a detachable angle scale, and the scale ring of the angle scale is located on the rotation path of the top surface of the active movable frame.

[0012] Preferably, one end of the angle scale away from the scale ring is detachably connected to the active fixed frame through a first fastener.

[0013] Preferably, a mover is provided on the active fixed frame, and the output end of the mover is in transmission connection with one end of the angle scale away from the scale ring, for driving the angle scale away from the active movable frame.

[0014] Preferably, the active fixed frame is detachably connected to the base through a second fastener, for adjusting the vertical height from the lowermost end of the active fixed frame to the lowermost end of the base.

[0015] Preferably, a lifter is provided on the base, and the output end of the lifter is in transmission connection with the active fixed frame, for driving the base to move up and down to adjust the vertical height from the lowermost end of the active fixed frame to the lowermost end of the base.

[0016] Preferably, a controller is further included. The controller is electrically connected to the lifter. The controller is used to calculate the absolute height of the high side relative to the low side after the gearbox is tilted according to the maximum distance between the two sides of the gearbox and the preset installation tilt angle of the gearbox, and control the lifter to drive the base to move until the vertical height from the lowermost end of the active fixed frame to the lowermost end of the base is equal to the absolute height.

[0017] Preferably, a vertical guide post is provided on the base. The top end of the guide post penetrates through the bottom end of the active fixed frame and extends above the bottom end of the active fixed frame, for guiding the up and down movement of the active fixed frame.

[0018] Preferably, the active fixed frame includes an active bottom plate and two active ear seats. The two active ear seats are symmetrically arranged on the active bottom plate, and an active rotating shaft for the active movable frame to sleeved is provided between the two active ear seats;

[0019] The passive fixing frame includes a passive bottom plate and two passive ear seats. The two passive ear seats are symmetrically arranged on the passive bottom plate. A passive rotating shaft for the passive movable frame to sleeved is arranged between the two passive ear seats, and the active rotating shaft is parallel to the passive rotating shaft.

[0020] Preferably, it further includes a test platform. Multiple pairs of the active supports and the passive supports are arranged at intervals along the length direction of the test platform, and each pair of the active supports and the passive supports are arranged at intervals along the width direction of the test platform.

[0021] The gearbox tilting device provided by the present invention is used for checking the contact spots of the gear pair before the marine gearbox leaves the factory. When in use, in the first step, according to the maximum distance between the two sides of the gearbox and the preset installation tilt angle of the gearbox, calculate the absolute height of the high side relative to the bottom side after the gearbox is tilted, and adjust the vertical height between the bottom end of the active fixing frame and the bottom end of the base to be equal to the absolute height; in the second step, place the two sides of the gearbox on the top surfaces of the active movable frame and the passive movable frame respectively to simulate the gearbox being installed on the ship at a fixed installation tilt angle; in the third step, start the driver, control the driver to drive the active movable frame to rotate a certain angle. The absolute value of this angle Δα is smaller than the absolute value of the installation tilt angle α, so that the tilting angle of the gearbox changes to α±Δα. In the fourth step, finally, check the contact spots of the gear pair. It should be noted that after the gearbox completes a check of the contact spots of the gear pair, the driver can still be controlled to continuously drive the active movable frame to rotate a certain angle to simulate the continuous change angle of the gearbox affected by water ripples at the same installation tilt angle, and the above first to fourth steps can also be performed again to simulate the check of the contact spots of the gear pair of the gearbox affected by water waves at other installation tilt angles, so that the data of the contact spots check of the gear pair recorded when the gearbox leaves the factory can provide sufficient and reliable data for the actual ship installation and subsequent maintenance of the gearbox. Description of the Drawings

[0022] 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 use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0023] Figure 1 It is a schematic structural diagram of the active support provided by the present application;

[0024] Figure 2 It is a schematic structural diagram of the passive support provided by the present application;

[0025] Figure 3Schematic diagram of the gearbox provided by this application set at a fixed installation inclination angle;

[0026] Figure 4 Installation schematic diagram of the gearbox tilting device and the gearbox provided by this application;

[0027] Figure 5 Top view of the gearbox tilting device provided by this application.

[0028] Reference numerals:

[0029] 1 - Active support; 2 - Passive support; 3 - Gearbox;

[0030] 11 - Base; 12 - Active fixing frame; 13 - Active movable frame; 14 - Driver; 15 - Angle scale; 16 - First fastener; 17 - Second fastener;

[0031] 21 - Passive fixing frame; 22 - Passive movable frame;

[0032] 121 - Active bottom plate; 122 - Active ear seat; 123 - Active rotating shaft;

[0033] 211 - Passive bottom plate; 212 - Passive ear seat; 213 - Passive rotating shaft. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0035] The core of the present utility model is to provide a gearbox tilting device, which can simulate the continuously changing angle of the gearbox affected by water ripples at any installation inclination angle, so that the data of the gear pair contact spot inspection recorded when the gearbox leaves the factory can provide sufficient and reliable data for the actual ship installation and subsequent maintenance of the gearbox.

[0036] It should be noted that in this embodiment, the orientation or positional relationship indicated by "up", "down", "front", "back", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to this application.

[0037] Please refer to Figures 1 to 4 , this application provides a gearbox tilting device, including an active support 1 and a passive support 2.

[0038] The active support 1 includes a base 11, an active fixing frame 12, an active movable frame 13 and a driver 14. The active fixing frame 12 is horizontal and vertically movable above the base 11. The active movable frame 13 is rotatably arranged on the active fixing frame 12 and is drivingly connected to the driver 14 placed on the active fixing frame 12.

[0039] The passive support 2 includes a passive fixing frame 21 and a passive movable frame 22. The passive movable frame 22 is rotatably arranged on the passive fixing frame 21.

[0040] Among them, the passive support 2 and the active support 1 are arranged at intervals along the same horizontal line, and both the active movable frame 13 and the passive movable frame 22 rotate around a direction perpendicular to the horizontal line. The top surfaces of the active movable frame 13 and the passive movable frame 22 are respectively used to support both sides of the gearbox 3. And when both the active movable frame 13 and the passive movable frame 22 are in a horizontal state, the vertical height from the top surface of the active movable frame 13 to the lowermost end of the active fixing frame 12 is equal to the vertical height from the top surface of the passive movable frame 22 to the lowermost end of the passive fixing frame 21.

[0041] It should be noted that the active support 1 and the passive support 2 are arranged at intervals along the same horizontal line, which can make the active movable frame 13 and the passive movable frame 22 be arranged at intervals along the same horizontal line, so as to realize that the active movable frame 13 and the passive movable frame 22 respectively support both sides of the gearbox 3. The vertical height from the top surface of the active movable frame 13 to the lowermost end of the active fixing frame 12 is equal to the vertical height from the top surface of the passive movable frame 22 to the lowermost end of the passive fixing frame 21. In this way, the absolute height of the high side relative to the low side of the gearbox 3 after tilting can be calculated according to the maximum distance between both sides of the gearbox 3 and the preset installation tilt angle of the gearbox 3, and the vertical height from the lowermost end of the active fixing frame 12 to the lowermost end of the base 11 can be adjusted to be equal to the absolute height, so that the inclination angle of the gearbox 3 placed on the active movable frame 13 and the passive movable frame 22 reaches the preset installation tilt angle. The rotation axes of the active movable frame 13 and the passive movable frame 22 are both perpendicular to the horizontal line along which the active support 1 and the passive support 2 are arranged. If the high side of the gearbox 3 is located on the active movable frame 13, the high side of the gearbox 3 can be driven to rise and fall by rotating the active movable frame 13, so as to realize the fine adjustment of the inclination angle of the gearbox 3.

[0042] Preferably, please refer to Figure 1 , the driver 14 is installed on the side of the active fixing frame 12 away from the passive fixing frame 21, which is convenient for the output end of the driver 14 to be connected to the side of the active movable frame 13 away from the passive movable frame 22, so as to conveniently drive the active movable frame 13 to rotate towards or away from the passive movable frame 22.

[0043] The gearbox tilting device configured with the above structure is used for checking the contact pattern of the gear pair before the marine gearbox 3 leaves the factory. When in use, in the first step, according to the maximum distance L between the two sides of the gearbox 3 and the preset installation tilting angle α of the gearbox 3, calculate the absolute height H of the high side relative to the bottom side after the gearbox 3 is tilted. As shown in Figure 3 , adjust the vertical height from the bottom end of the active fixing frame 12 to the bottom end of the base 11 to be equal to the absolute height H, as shown in Figure 1 ; in the second step, place the two sides of the gearbox 3 on the top surfaces of the active movable frame 13 and the passive movable frame 22 respectively to simulate the gearbox 3 being installed on the ship at a fixed installation tilting angle, as shown in Figure 4 ; in the third step, start the driver 14 and control the driver 14 to drive the active movable frame 13 to rotate by a certain angle. The absolute value of this angle Δα is smaller than the absolute value of the installation tilting angle α, so that the tilting angle of the gearbox 3 changes to α ± Δα. In the fourth step, finally, check the contact pattern of the gear pair. It should be noted that after the gearbox 3 completes one check of the contact pattern of the gear pair, the driver 14 can still be controlled to continuously drive the active movable frame 13 to rotate by a certain angle to simulate the continuously changing angle of the gearbox 3 affected by water ripples at the same installation tilting angle. And the above first to fourth steps can also be carried out again to simulate the check of the contact pattern of the gear pair of the gearbox 3 affected by water waves at other installation tilting angles.

[0044] In summary, the gearbox tilting device of the present application expands the tilting angle range of the gearbox 3, not only enabling the gearbox 3 to simulate different installation tilting angles on the actual ship, but also enabling the gearbox 3 to simulate the continuously changing angle affected by water ripples at any installation tilting angle, so that the data of the contact pattern check of the gear pair recorded when the gearbox 3 leaves the factory can provide sufficient and reliable data for the actual ship installation and subsequent maintenance of the gearbox 3.

[0045] Considering the specific structures of the active fixing frame 12 and the passive fixing frame 21, on the basis of the above embodiment, please refer to Figure 1 and Figure 2 , the active fixing frame 12 includes an active bottom plate 121 and two active ear seats 122. The two active ear seats 122 are symmetrically arranged on the active bottom plate 121. An active rotating shaft 123 for the active movable frame 13 to sleeved is provided between the two active ear seats 122; the passive fixing frame 21 includes a passive bottom plate 211 and two passive ear seats 212. The two passive ear seats 212 are symmetrically arranged on the passive bottom plate 211. A passive rotating shaft 213 for the passive movable frame 22 to sleeved is provided between the two passive ear seats 212, and the active rotating shaft 123 and the passive rotating shaft 213 are parallel to each other. It should be noted that the distances between the two passive ear seats 212 and the two active ear seats 122 need to be set according to the low side and the high side of the gearbox 3 respectively.

[0046] It can be understood that both the active fixing frame 12 and the passive fixing frame 21 are composed of a base plate and two ear seats symmetrically placed thereon. The supporting structure formed by the ear seats and the base plate has high structural bearing strength and can safely and smoothly support the rotation of the movable frame.

[0047] In order to intuitively and accurately control the fine adjustment angle of the gear box 3, based on the above embodiment, please refer to Figure 1 The active fixed frame 12 is provided with a detachable angle scale 15 , and the scale ring of the angle scale 15 is located on the rotation path of the top end surface of the active movable frame 13 .

[0048] Specifically, the conventional angle scale 15 has a scale ring, i.e., a main scale, and a support plate connected thereto. The scale ring is generally rotatable to adjust the angle between it and the horizontal reference plane. The support plate is connected to the active ear seat 122 to realize the installation of the angle scale 15. The scale ring is placed above the top surface of the active movable frame 13, and an angle is left between it and the top surface of the active movable frame 13. This angle is the changing inclination angle of the active movable frame 13, i.e., the fine-tuning angle of the gear box 3. In this way, the angle scale 15 cooperates with the driver 14 to accurately control the fine-tuning of the inclination angle of the gear box 3. After completion, the angle scale 15 is removed from the active movable frame 13 for subsequent use.

[0049] The above angle ruler 15 is a kind of installation method, please refer to Figure 1 The end of the angle scale 15 away from the scale ring is detachably connected to the active fixing frame 12 through a first fastener 16.

[0050] Specifically, the end of the support plate of the angle scale 15 away from the scale ring is fastened to the active ear seat 122 by screws, which not only realizes the detachable setting of the angle scale 15, but also helps to improve the firmness of the installation of the angle scale 15 even if the angle scale 15 is removed from the active movable frame 13.

[0051] Another installation method of the angle scale 15 is that a mover is provided on the active fixed frame 12 , and the output end of the mover is transmission-connected with the end of the angle scale 15 away from the scale ring, so as to drive the angle scale 15 away from the active movable frame 13 .

[0052] Specifically, a mover is provided on the active ear seat 122, and the output end of the mover is connected to the support plate of the angle scale 15, which can drive the support plate to reciprocate in a direction parallel to the active rotating shaft 123 to drive the scale away from the active movable frame 13, thereby realizing the convenient and quick removal of the angle scale 15 from the active movable frame 13.

[0053] Considering the installation method between the active fixing frame 12 and the base 11, based on the above embodiment, please refer to Figure 1, the active fixing bracket 12 is detachably connected to the base 11 through the second fastener 17, and is used to adjust the vertical height of the lowermost end of the active fixing bracket 12 from the lowermost end of the base 11.

[0054] Specifically, the detachable connection between the active bottom plate 121 and the base 11 is realized through a screw and a nut, which not only enables the base 11 to firmly support the active fixing bracket 12, but also enables the detachable setting of the base 11 and the active fixing bracket 12, and is also convenient for adjusting the vertical height of the bottom end face of the active bottom plate 121 from the bottom end face of the base 11, so that the vertical height is equal to the required absolute height.

[0055] To further improve the convenience of adjusting the vertical height of the lowermost end of the active fixing bracket 12 from the lowermost end of the base 11, on the basis of the above embodiment, a lifter is provided on the base 11, and the output end of the lifter is in transmission connection with the active fixing bracket 12, and is used to drive the base 11 to move up and down to adjust the vertical height of the lowermost end of the active fixing bracket 12 from the lowermost end of the base 11.

[0056] Specifically, the fixed end of the lifter is installed on the base 11 and the driving end is connected to the active bottom plate 121. If it is necessary to adjust the vertical height of the lowermost end of the active fixing bracket 12 from the lowermost end of the base 11, that is, to adjust the vertical height of the bottom end face of the active bottom plate 121 from the bottom end face of the base 11, remove the second fastener 17, and use the lifter to drive the active bottom plate 121 to move up and down to accurately adjust the vertical height of the bottom end face of the active bottom plate 121 from the bottom end face of the base 11 to the required absolute height. Therefore, the use of the lifter can realize the automatic adjustment of the vertical height of the bottom end face of the active bottom plate 121 from the bottom end face of the base 11, which is beneficial to improving the convenience and accuracy of the adjustment.

[0057] Preferably, at least two lifters are provided between the base 11 and the active fixing bracket 12, that is, at least two lifters are provided between the base 11 and the active bottom plate 121, which is beneficial to stably driving the active fixing bracket 12 to move up and down.

[0058] Furthermore, the present application further includes a controller, which is electrically connected to the lifter. The controller is used to calculate the absolute height of the high side relative to the low side after the gearbox 3 is tilted according to the maximum distance on both sides of the gearbox 3 and the preset installation tilt angle of the gearbox 3, and control the lifter to drive the base 11 to move until the vertical height of the lowermost end of the active fixing bracket 12 from the lowermost end of the base 11 is equal to the absolute height.

[0059] In this way, by inputting the data of the maximum distance on both sides of the gearbox 3 and the preset installation inclination angle of the gearbox 3 into the controller, the controller can automatically calculate the absolute height of the high side relative to the low side of the gearbox 3 after inclination according to the set programming. The controller transmits a lifting signal to the lifter according to the calculated absolute height, so that the vertical height between the lowermost end of the active fixing frame 12 and the lowermost end of the base 11 is equal to the required absolute height. Therefore, the controller can accurately control the vertical height between the lowermost end of the active fixing frame 12 and the lowermost end of the base 11 according to the set parameters and rules, which is beneficial to improving the accuracy and efficiency of adjusting the installation inclination angle of the gearbox 3.

[0060] Preferably, the controller is also electrically connected to the driver 14 to control the opening and closing of the driver 14 and the extension amount of the output end of the driver 14, which is beneficial to accurately controlling the rotation amount of the active movable frame 13 and further improving the accuracy of fine-tuning the inclination angle of the gearbox 3.

[0061] To ensure that the active fixing frame 12 remains horizontal during the up and down movement, on the basis of the above embodiment, vertical guide columns are provided on the base 11. The top ends of the guide columns penetrate the bottom end of the active fixing frame 12 and extend above the bottom end of the active fixing frame 12 for guiding the up and down movement of the active fixing frame 12.

[0062] Specifically, the bottom ends of the guide columns are installed on the base 11, and the top ends pass through the active bottom plate 121 and extend above the active bottom plate 121. During the up and down movement of the active bottom plate 121 of the active fixing frame 12, the active fixing frame 12 moves up and down along the guide columns. Since the guide columns are vertically arranged, it can be ensured that the active fixing frame 12 remains horizontal during the up and down movement, avoiding the inclination of the active fixing frame 12 and affecting the adjustment accuracy of the vertical height between its lowermost end and the lowermost end of the base 11.

[0063] In addition, please refer to Figure 5 , this application has a test platform, and multiple pairs of active supports 1 and passive supports 2 are arranged at intervals along the length direction of the test platform, and each pair of active supports 1 and passive supports 2 are arranged at intervals along the width direction of the test platform. In this way, the gearbox inclination device of this application can be used to check the gear pair contact spots of different models of gearboxes 3 under the influence of water waves at any installation inclination angle to improve the applicability of this application, and can also be used to check the gear pair contact spots of multiple gearboxes 3 simultaneously under the influence of water waves at any installation inclination angle to improve the inspection efficiency of gear pair contact spots when the gearbox 3 leaves the factory.

[0064] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is the difference from other embodiments. The same and similar parts between each embodiment can be referred to each other.

[0065] The above has introduced in detail a gearbox tilting device provided by the present utility model. Specific examples are used in this article to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present utility model, several improvements and modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A gear box tilting device, characterized in that: include: An active support (1) comprises a base (11), an active fixed frame (12), an active movable frame (13) and a driver (14); the active fixed frame (12) is horizontally and movable up and down above the base (11); the active movable frame (13) is rotatably disposed on the active fixed frame (12) and is transmission-connected to the driver (14) disposed on the active fixed frame (12); A passive support (2) comprises a passive fixed frame (21) and a passive movable frame (22), wherein the passive movable frame (22) is rotatably disposed on the passive fixed frame (21); The passive support (2) and the active support (1) are arranged at intervals along the same horizontal line, and the active movable frame (13) and the passive movable frame (22) both rotate around a direction perpendicular to the horizontal line, the top surface of the active movable frame (13) and the top surface of the passive movable frame (22) are respectively used to support the two side parts of the gear box (3), and when the active movable frame (13) and the passive movable frame (22) are both in a horizontal state, the vertical height of the top surface of the active movable frame (13) from the lowest end of the active fixed frame (12) is equal to the vertical height of the top surface of the passive movable frame (22) from the lowest end of the passive fixed frame (21); The base (11) is provided with a lifter, the output end of which is transmission-connected to the active fixing frame (12) and is used to drive the base (11) to move up and down, so as to adjust the vertical height of the bottom end of the active fixing frame (12) from the bottom end of the base (11); It also includes a controller, which is electrically connected to the lifter, and is used to calculate the absolute height of the high side relative to the bottom side of the gear box (3) after tilting according to the maximum distance between the two sides of the gear box (3) and the preset installation tilt angle of the gear box (3), and control the lifter to drive the base (11) to move until the vertical height of the bottom end of the active fixing frame (12) from the bottom end of the base (11) is equal to the absolute height.

2. The gearbox tilting device according to claim 1, characterized in that: The active fixed frame (12) is provided with a detachable angle scale (15), and the scale ring of the angle scale (15) is located on the rotation path of the top end surface of the active movable frame (13).

3. The gearbox tilting device according to claim 2, characterized in that: One end of the angle scale (15) away from the scale ring is detachably connected to the active fixing frame (12) via a first fastener (16).

4. The gearbox tilting device according to claim 2, characterized in that: The active fixed frame (12) is provided with a mover, and the output end of the mover is transmission-connected to an end of the angle scale (15) away from the scale ring, so as to drive the angle scale (15) away from the active movable frame (13).

5. The gearbox tilting device according to claim 1, characterized in that: The active fixing frame (12) is detachably connected to the base (11) via a second fastener (17) and is used to adjust the vertical height of the bottom end of the active fixing frame (12) from the bottom end of the base (11).

6. The gearbox tilting device according to claim 1, characterized in that: A vertical guide column is provided on the base (11), the top end of the guide column passes through the bottom end of the active fixing frame (12) and extends to above the bottom end of the active fixing frame (12), so as to guide the active fixing frame (12) to move up and down.

7. The gearbox tilting device according to claim 1, characterized in that: The active fixed frame (12) comprises an active bottom plate (121) and two active ear seats (122), the two active ear seats (122) are symmetrically arranged on the active bottom plate (121), and an active rotating shaft (123) for the active movable frame (13) to be sleeved is arranged between the two active ear seats (122); The passive fixed frame (21) comprises a passive bottom plate (211) and two passive ear seats (212), the two passive ear seats (212) are symmetrically arranged on the passive bottom plate (211), a passive rotating shaft (213) for the passive movable frame (22) to be sleeved is arranged between the two passive ear seats (212), and the active rotating shaft (123) and the passive rotating shaft (213) are parallel to each other.

8. The gearbox tilting device according to any one of claims 1 to 7, characterized in that: It also comprises a test platform, wherein a plurality of pairs of the active supports (1) and the passive supports (2) are arranged at intervals along the length direction of the test platform, and each pair of the active supports (1) and the passive supports (2) are arranged at intervals along the width direction of the test platform.

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