Pulley carriage device

Abstract

A pulley frame assembly includes a pulley frame and rollers adjustablely mounted on the pulley frame. The pulley frame assembly further includes a roller adjustment device comprising: a transition frame rotatably supporting the rollers and movably connected to the pulley frame via a rotating connector; an adjustment member including an eccentric shaft passing through the transition frame and the pulley frame, the eccentric shaft including a first shaft section and a second shaft section eccentrically arranged, wherein the first shaft section is connected to the transition frame, and the second shaft section is connected to the pulley frame; and a rotating connector passing through the transition frame and the pulley frame at a distance spaced relative to the eccentric shaft, allowing the transition frame to rotate about the rotating connector. This device reduces the adverse effects of roller stress on the overall lifespan of the device, allows for quick confirmation of whether the rollers are in the correct position, and enables adjustment of the roller position over a wide range.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of aircraft high-lift devices, and in particular, the present application relates to a roller bracket device and an aircraft flap comprising such a roller bracket device. BACKGROUND

[0002] A flap is a part of an aircraft high-lift device, usually installed at the trailing edge of a wing, which can be deflected downward and rearward about a rotation axis to increase the camber of the wing. When the aircraft is taking off, the flap is opened at a small angle to increase the lift, thereby shortening the ground roll distance of the aircraft. When the aircraft is landing, the flap is opened at a large angle to increase both the lift and the drag, thereby facilitating the reduction of the landing speed and the shortening of the ground roll distance of the aircraft. In order to achieve the position requirements of the flap during take-off and landing, a movement mechanism for guiding the movement of the flap needs to be designed. Among them, the flap roller bracket device is a commonly used movement mechanism form, which mainly includes a crank, a rocker arm hinged to the crank, a sliding rail fixed to the wing structure, and a roller bracket hinged to the flap and moving along the sliding rail. When operating the flap, the crank is driven to rotate by a driving mechanism independent of the flap roller bracket device to drive the rocker arm to move, thereby causing the roller bracket to move along the sliding rail, driving the flap to retreat along the sliding rail while deflecting downward, and finally reaching the predetermined deflection angle and position. Since the movement of the mechanism is generally achieved by the rolling friction between the rollers of the roller bracket and the sliding guide plane of the sliding rail, in actual application, in order to ensure the smooth movement of the roller bracket along the sliding rail and the durability of the components, the rollers usually need to be adjusted to the appropriate position to have an appropriate gap between them and the sliding guide plane of the sliding rail. Therefore, a roller adjustment device needs to be provided to perform such position adjustment.

[0003] The main structure of the current roller bracket device is shown in Figure 1 , which includes a roller bracket 601', a transfer bracket 1' movably connected to the roller bracket 601', a roller 602' rotatably connected to the transfer bracket 1', and a roller adjustment device. As shown in the figure, the roller adjustment device used mainly includes a threaded adjusting member 7 and an eccentric adjusting member 8. The threaded adjusting member 7 is vertically threaded through the roller bracket 601' and connected to the transfer bracket 1' at the bottom. By rotating the nut at the top of the threaded adjusting member 7, it is caused to move upward / downward relative to the roller bracket 601', thereby driving the transfer bracket 1' to rotate about the rotation axis, and in turn driving the roller 602' to move upward / downward relative to the sliding guide plane of the sliding rail 9. The eccentric adjusting member 8 mainly includes an eccentric shaft, which is arranged at the rotation axis of the roller 602', and by rotating the eccentric shaft, the roller 602' is caused to move upward / downward relative to the sliding guide plane of the sliding rail 9. The combination of the threaded adjusting member 7 and the eccentric adjusting member 8 can adjust the gap between the roller 602' and the sliding guide plane of the sliding rail 9, achieving the purpose of adjusting the position of the roller. However, this solution has some defects.

[0004] First, placing the eccentric adjusting element 8 on the rotation axis of the roller will adversely affect the service life of the component. Eccentric shafts are typically constructed as multi-segment shafts with stepped diameters. Figure 1 It is known that the two ends of the eccentric shaft pass through the two lugs of the adapter frame. Therefore, the lugs need to be provided with holes of different diameters to receive the corresponding ends of the eccentric shaft, which results in inconsistent structural strength between the two lugs. When the pulley frame device is working, the stress on the roller is directly transmitted to the eccentric shaft, and then to the lugs of the adapter frame. Since the structural strength of the different lugs is different, their durability is also different. Long-term exposure to such large stress will lead to significantly inconsistent aging of the lugs, thus accelerating the wear process of the lugs with weaker structural strength, ultimately resulting in damage to the overall lifespan of the component. Secondly, the dual adjustment device makes the adjustment process of the roller position cumbersome; and the existing device does not have auxiliary positioning parts. Each adjustment requires the use of a feeler gauge to measure whether the gap between the roller and the guide surface of the guide rail reaches the required size, resulting in poor manufacturability and low operating efficiency. Thirdly, due to the size limitations of the airborne equipment, the eccentricity of the eccentric shaft is limited and small, so the roller position can only be adjusted within a small range, and there is a risk that the roller cannot be adjusted to the required position.

[0005] Therefore, there is a need to propose a pulley frame device that includes an improved roller adjustment mechanism, which can solve the problems and defects existing in the prior art. Summary of the Invention

[0006] Therefore, the purpose of this invention is to provide a pulley frame device including an improved roller adjustment device, which improves the load transmission path from the roller to the roller adjustment device and then to other components of the pulley frame device, reduces the adverse effects of inconsistent structural strength on component lifespan, can quickly determine whether the gap between the roller and the guide surface of the guide rail reaches the required size, and utilizes the lever principle to enable a large range of roller position adjustments even with size constraints.

[0007] According to the present application, a trolley device is provided, which comprises a trolley and a roller adjustably mounted on the trolley, and further comprises a roller adjusting device for adjusting the position of the roller in the trolley, the roller adjusting device comprising: an adapter frame, which rotatably supports the roller and is movably connected to the trolley by a rotary connecting member; an adjusting member, which comprises an eccentric shaft passing through the adapter frame and the trolley, the eccentric shaft comprising a first shaft section and a second shaft section arranged eccentrically to each other, wherein the first shaft section is connected to the adapter frame, and the second shaft section is connected to the trolley; and a rotary connecting member, which passes through the adapter frame and the trolley at a position spaced apart from the eccentric shaft by a distance, allowing the adapter frame to rotate around the rotary connecting member. The adjusting member for adjusting the position of the roller according to the present application is arranged on the adapter frame instead of the roller, so that when the roller is stressed, the stress is transmitted to the adapter frame supporting the roller, and then to the trolley through the adjusting member passing through the adapter frame. Since the position of the adapter frame supporting the roller itself releases a certain load, and the roller is spaced apart from the adjusting member by a distance, the load is consumed during transmission, so the stress on the adjusting member is significantly less than the stress on the roller. In this way, even if the structural strength of the part fixing the two ends of the eccentric shaft of the adjusting member in the trolley device is inconsistent, it will not significantly inconsistent in the process of being damaged due to excessive stress, thereby reducing the adverse effects on the overall life of the device.

[0008] According to still another aspect of the present disclosure, the trolley device further comprises a size clamping member, which is detachably fixed to the adapter frame, wherein the size clamping member has multiple sections with different sizes. Different size sections can be selected according to the required gap size, so that the size clamping member can quickly determine whether the roller is adjusted to the required position.

[0009] According to still another aspect of the present disclosure, the adapter frame rotatably supports the roller by a rotary shaft member passing through the adapter frame and the roller.

[0010] According to still another aspect of the present disclosure, the size clamping member is provided with a central fixing hole and an arc-shaped outer contour having multiple sections with different radii from the center of the central fixing hole, wherein the central fixing hole can be fitted to the end of the rotary shaft member. Before operating the roller adjusting device, select the section of the size clamping member corresponding to the required gap, fix the size clamping member to the end of the rotary shaft member so that the section is vertically directed towards the guide surface, and then operate the roller adjusting device to adjust the position of the roller until the size clamping member contacts the guide surface of the slide rail. In this way, the size clamping member can be used to visually determine whether the roller is adjusted in place without the need for repeated measurements using a feeler gauge.

[0011] According to another aspect of the present disclosure, the rotation axis of the rotating connecting piece, the central axis of the second rotating shaft section of the eccentric shaft part, and the rotation axis of the roller are arranged substantially in parallel, and the distance from the rotation axis of the rotating connecting piece to the central axis of the second rotating shaft section is smaller than the distance from the rotation axis of the rotating connecting piece to the rotation axis of the roller. In this way, the adjusting piece, the rotating connecting piece, and the roller form a lever, and the adapter frame moves a small distance with the adjusting piece, so that the roller moves a large distance correspondingly, thereby achieving the purpose of adjusting the position of the roller in a large range.

[0012] According to another aspect of the present disclosure, the adjusting piece further comprises an adjusting handle and a locking part, wherein the locking part is configured to lock the rotation of the eccentric shaft part. Specifically, the locking part comprises a locking flange and a locking ring, wherein the locking flange is integrated with one end of the eccentric shaft part and has external teeth; and the locking ring is movably fixed to the pulley frame and has internal teeth engaged with the external teeth of the locking flange.

[0013] According to another aspect of the present disclosure, the rotating shaft piece comprises a bolt penetrating through the adapter frame and the roller and an adjusting handle screwed on the bolt; and the rotating connecting piece comprises a bolt penetrating through the adapter frame and the pulley frame and an adjusting handle screwed on the bolt.

[0014] According to another aspect of the present disclosure, the adjusting handle comprises an adjusting nut screwed and fixed and having a plurality of grooves, and an adjusting pin radially penetrating through a part of the plurality of grooves of the adjusting nut. The adjusting pin can lock the rotation of the adjusting nut relative to the bolt or the eccentric rotating shaft on which the adjusting nut is screwed, thereby ensuring the stability of the components of the adjusting piece, the rotating shaft piece, and the rotating connecting piece. Meanwhile, the adjusting pin is also beneficial for the operator to hold the adjusting handle and further operate, thereby improving the operation convenience.

[0015] The present disclosure also provides an aircraft flap comprising the pulley frame device as described above.

[0016] The steps of adjusting the position of the roller using the device of the present disclosure are as follows: selecting the size section of the size clamping piece according to the required gap between the roller and the guide surface, fixing the size clamping piece to the end of the rotating shaft piece, and making the corresponding size section vertically face the guide surface of the guide rail; holding the adjusting handle of the adjusting piece and rotating until the size clamping piece contacts the guide surface; sleeving the locking ring around the locking flange to lock the rotating movement of the adjusting piece; and removing the size clamping piece.

[0017] The device of the present application arranges the adjusting member on the adapter frame and separates it from the roller by a certain distance, so that part of the stress borne by the roller is released in the process of transmitting the stress borne by the roller to the adjusting member through the adapter frame, so that the stress borne by the adjusting member is significantly smaller than the stress borne by the roller, thereby reducing the adverse effects of the inconsistent structural strength of the roller adjusting device on the degree of damage caused by long-term bearing of excessive stress, reducing the risk of damage to the overall service life of the device. Secondly, the device of the present application is provided with a size clamping piece, which can determine whether the roller position is adjusted in place according to whether the size clamping piece is in contact with the guide surface of the guide rail, the confirmation process is fast and accurate, and the operation efficiency is improved. In addition, the device of the present application only provides one adjusting member, and the operation process is simple; and the roller, the adjusting member and the rotating connecting piece of the adapter frame form a lever by different distances therebetween, so that the roller moves a long distance by rotating the adjusting member by a small angle, thereby achieving the purpose of adjusting the roller position in a large range.

[0018] This summary of the application is provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description of the application. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter. Other aspects and advantages of the present application will become more readily apparent to those of ordinary skill in the art by referring to the following detailed description of the application in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0019] For a more complete understanding of the present application, reference is made to the following description of exemplary embodiments considered in conjunction with the accompanying drawings. The drawings are not intended to be limiting in nature, but rather are intended to be illustrative. In the drawings:

[0020] Figure 1 is a pulley frame device of the prior art;

[0021] Figure 2 is a perspective view of a pulley frame device according to an exemplary embodiment of the present application;

[0022] Figure 3 is a front view of the pulley frame device of Figure 2 ;

[0023] Figure 4 is a bottom view of the pulley frame device of Figure 2 ;

[0024] Figure 5 is a left side view of the pulley frame device of Figure 2 ;

[0025] Figure 6 is a right side view of the pulley frame device of Figure 2 .

[0026] List of reference signs

[0027] 100 roller adjusting device

[0028] 1 adapter

[0029] 2 adjusting member

[0030] 21 eccentric rotating shaft

[0031] 22 adjusting handle of adjusting member

[0032] 221 adjusting nut of adjusting member

[0033] 222 adjusting pin of adjusting member

[0034] 23 locking portion

[0035] 231 locking flange

[0036] 232 locking ring sleeve

[0037] 3 rotating connecting member

[0038] 31 rotating connecting member bolt

[0039] 22' adjusting handle of rotating connecting member

[0040] 221' adjusting nut of rotating connecting member

[0041] 222' adjusting pin of rotating connecting member

[0042] 4 size clamping member

[0043] 5 rotating shaft member

[0044] 51 rotating shaft member bolt

[0045] 22" adjusting handle of rotating shaft member

[0046] 221" adjusting nut of rotating shaft member

[0047] 222" adjusting pin of rotating shaft member

[0048] 53 rotating shaft member nut

[0049] 600 pulley frame device

[0050] 601 pulley frame

[0051] 602 roller

[0052] 7 prior art screw adjusting member

[0053] 8 prior art eccentric adjusting member

[0054] 9 sliding rail

[0055] 1' adapter of the prior art

[0056] 601' pulley carrier of the prior art

[0057] 602' roller of the prior art DETAILED DESCRIPTION

[0058] The following recitation of the detailed description of the specific embodiments of the present application refer to the accompanying drawings that show specific embodiments in which the present application can be practiced. The embodiments are intended to be illustrative of aspects of the present application and to provide those of ordinary skill in the art with the information needed to make and use the present application. Other embodiments can be utilized and changes can be made without departing from the scope of the present application. Accordingly, the following recitation of the detailed description of the specific embodiments should not be considered to be limiting. The scope of the present application is defined only by the appended claims, and the full range of equivalents of the claims. Identical reference numerals have been used in all the drawings and the specific embodiments to refer to the same or like parts.

[0059] The orientation terms "upper", "lower", and the like, used herein are in reference to the position of the pulley carrier device in the Figure 2 and are of reference and not of limitation.

[0060] Figure 2 A perspective view of a roller adjustment device 100 and a pulley carrier device 600 (partially) according to a preferred embodiment of the present application is shown. As shown, the pulley carrier device 600 generally includes a pulley carrier 601, a roller adjustment device 100 connected to the pulley carrier 601, and a roller 602; the roller adjustment device 100 mainly includes an adapter 1, an adjusting member 2, and a rotating connecting member 3.

[0061] The adapter 1 rotatably supports the roller 602 and is movably connected to the pulley carrier 601 by means of the rotating connecting member 3. Preferably, the adapter 1 rotatably supports the roller 602 by means of a rotating shaft member 5. In the present exemplary embodiment, the adapter 1 supports the roller 602 and has a double ear piece, the roller 602 is inserted into the gap between the double ear piece, and the rotating shaft member 5 is threaded through the double ear piece of the adapter 1 and the roller 602 to connect the two. Similarly, the pulley carrier 601 receives the portion of the adapter 1 configured to have a double ear piece, the adapter 1 is inserted into the gap between the double ear piece, and the adjusting member 2 and the rotating connecting member 3 are threaded through the double ear piece of the pulley carrier 601 and the adapter 1, respectively, to connect the two.

[0062] As Figures 2 to 6As shown, the adjusting member 2 comprises an eccentric shaft 21, an adjusting handle 22 and a locking part 23. The eccentric shaft 21 is arranged through the adapter frame 1 and the pulley frame 601, and comprises a first shaft section and a second shaft section arranged eccentrically to each other. Specifically, the second shaft section is a reference shaft, which comprises two sections with different diameters but coinciding central axes, and the two sections are distributed at two ends of the eccentric shaft 21 and respectively pass through two lugs of the pulley frame 601. One section of the second shaft section (i.e. one end of the eccentric shaft 21) is coupled to the adjusting handle 22 outside the pulley frame 601, and the other section (i.e. the other end of the eccentric shaft 21) is coupled to the locking part 23 outside the pulley frame 601. The first shaft section is an eccentric shaft, which is located between the two sections of the second shaft section and also between the two lugs of the pulley frame 601, and the central axis thereof is also offset relative to the central axes of the two sections of the second shaft section. The first shaft section is arranged through the adapter frame 1 and accommodated in the gap between the two lugs of the pulley frame 601. When the eccentric shaft 21 rotates, the position of the central axis of the eccentric shaft (the first shaft section) relative to the central axes of the reference shaft (the second shaft section) changes, so that the adapter frame 1 passing through the first shaft section also changes.

[0063] The adjusting handle 22 comprises an adjusting nut 221 screwed on one end of the eccentric shaft 21 outside the pulley frame 601, and has a plurality of grooves distributed along the circumferential direction thereof, which are open towards the direction away from the pulley frame 601 along the reference shaft; and an adjusting pin 222 passing through a part of the grooves of the adjusting nut 221 and radially penetrating the eccentric shaft 21, specifically, the adjusting pin 222 passes through two grooves of the adjusting nut 221 symmetrical about the eccentric shaft 21. Such a configuration of the adjusting handle 22 clamps the adjusting nut 221 by means of the adjusting pin 222, prevents the adjusting nut 221 from undesired rotation relative to the eccentric shaft 21, and ensures the stability of the components. In addition, such a configuration also makes it possible to rotate the eccentric shaft 21 by holding the adjusting pin 222 instead of screwing the end of the eccentric shaft 21, which improves the operation convenience. However, the present application is not limited thereto, and the eccentric shaft 21 can also be maintained in place by using nuts, covers or other suitable parts, which can or can not have handles or other components facilitating holding.

[0064] As shown, the adjusting handle 22 comprises an adjusting nut 221 screwed on one end of the eccentric shaft 21 outside the pulley frame 601, and has a plurality of grooves distributed along the circumferential direction thereof, which are open towards the direction away from the pulley frame 601 along the reference shaft; and an adjusting pin 222 passing through a part of the grooves of the adjusting nut 221 and radially penetrating the eccentric shaft 21, specifically, the adjusting pin 222 passes through two grooves of the adjusting nut 221 symmetrical about the eccentric shaft 21. Such a configuration of the adjusting handle 22 clamps the adjusting nut 221 by means of the adjusting pin 222, prevents the adjusting nut 221 from undesired rotation relative to the eccentric shaft 21, and ensures the stability of the components. In addition, such a configuration also makes it possible to rotate the eccentric shaft 21 by holding the adjusting pin 222 instead of screwing the end of the eccentric shaft 21, which improves the operation convenience. However, the present application is not limited thereto, and the eccentric shaft 21 can also be maintained in place by using nuts, covers or other suitable parts, which can or can not have handles or other components facilitating holding. Figure 2 and Figure 6As shown, the locking portion 23 comprises: a locking flange 231 which is integral with one end of the eccentric shaft 21 opposite to the end where the coupling adjusting handle 22 is connected, and is configured to extend radially outward and has external teeth; a locking ring 232 which is movably connected to the pulley frame 601 at one end by means of a connecting member such as a bolt, and is provided with a circular hollow portion at the other end, the diameter of the circular hollow portion is the same as the outer diameter of the locking flange 231, and the inner periphery is provided with internal teeth which engage with the external teeth of the locking flange 231. The locking ring 232 can rotate around the connecting member on the surface of the pulley frame 601, when it is rotated to the position where the circular hollow portion of the locking ring 232 is sleeved on the locking flange 231, the two are engaged; when the locking ring 232 is moved away from the locking flange 231 along the axial direction of the eccentric shaft 21 and is rotated, the two are disengaged. When the locking flange 231 is disengaged from the locking ring 232, the eccentric shaft 21 can rotate around its rotation axis (i.e. the central axis of the second shaft section); when the two are engaged, the external teeth of the locking flange 231 engage with the internal teeth of the locking ring 232, locking the rotation of the eccentric shaft 21.

[0065] The rotation connecting member 3 is spaced apart from the eccentric shaft 21 by a distance, and the rotation connecting member penetrates through the adapter frame 1 and the pulley frame 601, allowing the adapter frame 1 to rotate around the rotation connecting member 3. As shown in Figure 3 and Figure 4 As shown, the rotation connecting member 3 comprises: a rotation connecting member bolt 31 which penetrates through the pulley frame 601 and the adapter frame 1, and extends to the outside of the pulley frame 601 and is provided with a flange extending radially outward; an adjusting handle 22' which is connected to the end of the rotation connecting member bolt 31 opposite to the flange outside the pulley frame 601. The adjusting handle 22' is configured and connected to the rotation connecting member bolt 31 in the same way as the adjusting handle 22 of the eccentric shaft 21 connected to the adjusting member 2 described above, which will not be repeated here. The rotation connecting member 3 and the adjusting member 2 combine to stably accommodate the adapter frame 1 in the pulley frame 601 without undesired displacement, when the eccentric shaft 21 of the rotating adjusting member 2 is rotated, the adapter frame 1 is driven by the first shaft section to rotate around the rotation connecting member 3, more accurately, around the rotation connecting member bolt 31.

[0066] As shown in the exemplary embodiments of the present disclosure, the rotation shaft member 5 penetrates through the adapter frame 1 and the roller 602, so that the adapter frame 1 can rotate to support the roller 602. As shown in Figure 3 and Figure 4As shown, the rotating shaft 5 includes: a rotating shaft bolt 51, which passes through the adapter frame 1 and the roller 602, is connected to the adjusting handle 22” at one end, and has a protrusion extending in the radial direction at the other end, and connects the size clip 4 and the rotating shaft nut 53; the adjusting handle 22” is connected to one end of the rotating shaft bolt 51 on the outside of the adapter frame 1; the rotating shaft nut 53 is screwed onto the other end of the rotating shaft bolt 51 on the outside of the adapter frame 1, and presses against the size clip 4.

[0067] It is important to note that, for example Figures 3 to 6 As shown, the rotation axis of the rotating connector 3 (i.e., the rotation axis of the rotating connector bolt 31), the central axis of the second rotating shaft section of the eccentric shaft 21, and the rotation axis of the roller 602 (coaxial with the rotation axis of the rotating shaft bolt 51) are arranged in basically parallel, and the distance from the rotation axis of the rotating connector 3 to the central axis of the second rotating shaft section is less than the distance from it to the rotation axis of the roller 602. Thus, the eccentric shaft 21, the rotating connector 3, and the roller 602 form a lever with the help of the adapter frame 1. Because the distance from the rotation axis of the rotating connector 3 to the central axis of the second rotating shaft section is shorter, the eccentric shaft 21 can move the roller 602 a larger distance by rotating through a smaller angle, thereby achieving the purpose of adjusting the position of the roller within a larger range.

[0068] Furthermore, the roller adjustment device 100 of this disclosure also includes a size clamp 4, which has a central fixing hole and an arc-shaped outer peripheral profile. The arc-shaped outer peripheral profile has multiple segments with different radii from the center of the central fixing hole. When fixing the size clamp 4, the end of the rotating shaft bolt 51 is passed through the central fixing hole of the size clamp 4 until the size clamp 4 abuts against the protrusion of the rotating shaft bolt 51, and then the rotating shaft nut 53 is tightened until it is firmly against the size clamp 4. Different radius segments of the size clamp 4 correspond to different clearance sizes. Therefore, in actual operation, the corresponding radius segment of the size clamp 4 can be selected according to the required clearance size, and the size clamp 4 is fixed so that the radius segment faces the guide surface of the guide rail. When operating the roller adjustment device 100 of this disclosure, rotating the eccentric shaft 21 until the size clamp 4 contacts the guide surface of the guide rail confirms that the required clearance size has been achieved, thereby completing the roller position adjustment. This significantly improves the efficiency of confirming the clearance size compared to the prior art which uses feeler gauges to measure the clearance size multiple times. Of course, the shape of the size clip 4 is not limited to this embodiment, and other suitable shapes such as polygons can be used; the fixing position of the size clip 4 is also not limited to this embodiment, and it can be fixed to other positions of the adapter 1 that allow the size clip 4 to contact the guide surface of the guide rail.

[0069] The steps for adjusting the roller position using the roller adjustment device 100 disclosed herein are as follows:

[0070] - Selecting the corresponding radius section of the size card 4 according to the gap between the rolling wheel and the guide surface of the guide rail, and fixing the size card 4 so that the section is generally directed to the guide surface of the guide rail;

[0071] - Rotating the eccentric rotating shaft 21 until the size card 4 contacts the guide surface of the guide rail;

[0072] - Ringing the locking ring 232 around the locking flange 231 to lock the rotation of the eccentric rotating shaft 21;

[0073] - Removing the size card 4.

[0074] The pulley frame device of the present application uses the eccentric adjusting member connected to the adapter frame, so that the stress on the rolling wheel is not directly transmitted to the eccentric adjusting member, but is first transmitted to the adapter frame via the rotating shaft member connecting the rolling wheel and the adapter frame, then transmitted from the adapter frame to the eccentric adjusting member, and finally transmitted from the eccentric adjusting member to the pulley frame connected thereto. Since the rotating shaft member helps to release part of the stress, the transmission of the stress over a certain distance is also consumed, so the stress transmitted to the eccentric adjusting member is significantly smaller than the stress on the rolling wheel. In this way, even if the two lugs in the pulley frame connected to the eccentric adjusting member have inconsistent strength due to the through holes with inconsistent sizes, the lug will not be significantly inconsistent in wear degree due to long-term bearing of excessive stress, thereby protecting the overall life of the component and solving the problem of damaged life. Secondly, the present application only uses a single adjusting member to adjust the position of the rolling wheel, and a size card is provided to assist positioning, the adjustment steps are simple, the gap size confirmation process is fast, and the problem of low operation efficiency in the prior art is solved. Thirdly, the present application controls the distance between the rotating axis of the rolling wheel, the rotating axis of the reference axis of the eccentric adjusting member, and the rotating axis of the rotating connecting member, and uses the lever principle to make the rolling wheel move a long distance by rotating the eccentric rotating shaft by a small angle, thereby solving the problem of small adjustment range of the position of the rolling wheel in the prior art due to the limited size of the on-board equipment.

[0075] As used herein, the terms "comprises", "comprising", "includes", "including", "has", "having", "contains", "containing", or any other variation thereof, are intended to cover a non-exclusive inclusion. For example, a method, article, or apparatus that comprises a list of elements is not necessarily limited to only those elements but can include other elements not expressly listed or inherent to such method, article, or apparatus.

[0076] The present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments are merely illustrative and not limiting. Any possible changes and modifications can be made by those skilled in the art without departing from the purpose of the present application and the scope protected by the claims. Therefore, any modification, equivalent change and modification made to the above-mentioned embodiments according to the technical essence of the present application, without departing from the technical solution of the present application, fall within the protection scope defined by the claims of the present application.

Claims

1. A pulley frame device, comprising a pulley frame and a roller adjustably mounted on the pulley frame, and further comprising a roller adjusting device for adjusting the position of the roller in the pulley frame, characterized in that the roller adjusting device comprising: a transfer frame rotatably supporting the roller and movably connected to the pulley frame by a rotary connecting member; an adjusting member comprising an eccentric shaft passing through the transfer frame and the pulley frame, the eccentric shaft comprising a first shaft section and a second shaft section arranged eccentrically to each other, wherein the first shaft section is connected to the transfer frame and the second shaft section is connected to the pulley frame; a rotary connecting member passing through the transfer frame and the pulley frame at a position spaced apart from the eccentric shaft by a distance, allowing the transfer frame to rotate around the rotary connecting member, wherein the roller adjusting device further comprises a size clamping member detachably fixed to the transfer frame, wherein the size clamping member has a plurality of sections with different sizes.

2. The pulley mount apparatus of claim 1, wherein, the transfer frame rotatably supports the roller by a rotary shaft member passing through the transfer frame and the roller.

3. The pulley mount apparatus of claim 2, wherein, the size clamping member is provided with a central fixed hole and an arc-shaped outer contour having a plurality of sections with different radii from the center of the central fixed hole, wherein the central fixed hole is adapted to the end of the rotary shaft member.

4. The pulley frame device according to claim 1, wherein: an axis of rotation of the rotary connecting member, a central axis of the second shaft section of the eccentric shaft, and an axis of rotation of the roller are arranged substantially parallel to each other, a distance from the axis of rotation of the rotary connecting member to the central axis of the second shaft section is smaller than a distance from the axis of rotation of the rotary connecting member to the axis of rotation of the roller.

5. The pulley mount apparatus of claim 1, wherein, the adjusting member further comprises an adjusting handle and a locking portion, wherein the locking portion is configured to lock the rotation of the eccentric shaft.

6. The pulley assembly of claim 5, wherein, the locking portion comprises a locking flange and a locking ring, wherein: the locking flange is integral with one end of the eccentric shaft and has external teeth; the locking ring is movably fixed to the pulley frame and has internal teeth engaged with the external teeth of the locking flange.

7. The pulley frame device according to claim 2, wherein: the rotary shaft member comprises a bolt passing through the transfer frame and the roller and an adjusting handle screwed on the bolt; the rotary connecting member comprises a bolt passing through the transfer frame and the pulley frame and an adjusting handle screwed on the bolt.

8. The pulley assembly of claim 5 or 7, wherein, the adjusting handle comprises: an adjusting nut fixed by screwing and having a plurality of grooves; an adjusting pin radially passing through a portion of the plurality of grooves of the adjusting nut.

9. An aircraft flap comprising the pulley frame device according to any one of claims 1-8.

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