Hanging basket pulley mounting assembly

Abstract

The utility model belongs to the technical field of airplane strength tests, and discloses a hanging basket pulley installation assembly which comprises eight sets of identical installation assemblies, four sets of installation assemblies are installed in front of a hanging basket, and the other four sets of installation assemblies are symmetrically installed behind the hanging basket. Two sets of mounting assemblies are mounted on the left part and the right part of the upper edge of the hanging basket, and the other two sets of mounting assemblies are mounted on the left part and the right part of the lower edge of the hanging basket; one set of mounting assembly comprises a sliding groove, a pulley, a pulley seat and a distance adjusting structure; wherein the sliding groove is fixedly connected with the hanging basket, and the groove direction of the sliding groove is the horizontal direction; the pulleys comprise the first pulley and the second pulley, the first pulley is fixed to the outward side of the sliding groove, the second pulley is fixed to the pulley base, the pulley base is installed on the inward side of the sliding groove in a sliding mode, the distance adjusting structure is installed on the hanging basket and aligned to the inner side of the sliding groove, and the distance adjusting structure adjusts the position of the pulley base in the sliding groove. The device is simple and reliable in structure, easy to process and low in economic cost.

Description

Technical Field

[0001] This utility model belongs to the field of aircraft strength testing technology, and relates to an assembly component between a basket and a column used in aircraft landing gear drop test, specifically a basket pulley installation component. Background Technology

[0002] Currently, before conducting landing gear drop tests, when installing the basket on the drop test rig, the basket is first suspended in the middle of the rig's column, and then pulleys are fixed to the eight corners of the basket with bolts. Because the space between the eight corners of the basket and the column is very limited, the installation of the pulleys and the adjustment of their clearances are extremely inconvenient, time-consuming, and labor-intensive. Furthermore, after the landing gear is installed, it cannot be effectively adjusted if there are small differences between the landing gear attitude angle and the test requirements. Utility Model Content

[0003] To address the aforementioned issues, this invention provides a suspended platform pulley mounting assembly, which effectively avoids the problem of limited installation space, making the installation process more efficient and convenient. Furthermore, after the landing gear is installed, the mounting attitude angle of the landing gear can be effectively adjusted within a small range by adjusting the mounting positions of the various pulleys on the suspended platform.

[0004] The technical solution of this utility model is as follows:

[0005] A suspended platform pulley mounting assembly includes eight identical mounting assemblies. Four sets of mounting assemblies are installed at the front of the suspended platform, and the other four sets are symmetrically installed at the rear of the suspended platform. Among the mounting assemblies installed on the same side, two sets are installed on the upper left and right sides of the suspended platform, and the other two sets are installed on the lower left and right sides of the suspended platform. Each mounting assembly includes a slide groove, a pulley, a pulley seat, and an adjusting structure. The slide groove is fixedly connected to the suspended platform, and the groove direction of the slide groove is horizontal. The pulley includes a first pulley and a second pulley. The first pulley is fixed to the outer side of the slide groove, and the second pulley is fixed to the pulley seat. The pulley seat is slidably installed on the inner side of the slide groove. The adjusting structure is installed on the suspended platform and aligned with the inner side of the slide groove. The adjusting structure adjusts the position of the pulley seat in the slide groove.

[0006] Furthermore, the pulley axle of the first pulley is aligned with the groove direction of the slide, and the roller of the first pulley is perpendicular to the pulley axle of the first pulley and on the same horizontal plane.

[0007] Furthermore, the pulley includes a bearing housing, a pulley shaft, a bearing sleeve, and a bearing; the bearing housing has a double-ear connection structure, the pulley shaft is inserted between the double ears of the bearing housing, the bearing sleeve is placed outside the pulley shaft and between the double ears of the bearing housing, and a bearing sleeve is fitted around the bearing.

[0008] Furthermore, the pulley seat includes a bottom slide plate and a vertical plate, which are fixedly connected and perpendicular to each other. The bottom slide plate is fitted into the groove and can move along the groove. The second pulley is mounted on the vertical plate.

[0009] Furthermore, triangular reinforcing ribs are provided between the bottom slide and the vertical plate.

[0010] Furthermore, the adjustable distance structure includes an adjustable distance rod, a stop block, and a stop block fixing plate. The stop block fixing plate is installed on the suspended platform, and the stop block is installed on the stop block fixing plate. The stop block has a threaded hole in the horizontal center that is in the same direction as the groove direction of the slide. The adjustable distance rod is installed in the threaded hole through external thread. The adjustable distance rod extends towards one end of the slide, and the end of the extended part of the adjustable distance rod is a limiting end.

[0011] The beneficial effects of this utility model are as follows:

[0012] This utility model utilizes welding and threaded connections for fixed connections, resulting in a simple, reliable, and easy-to-process structure with low economic costs. When used in the installation of the landing gear drop test basket, it effectively avoids installation work in confined spaces, facilitating assembly and disassembly and improving installation efficiency. Furthermore, after the landing gear is installed, the installation positions of the pulleys on the basket can be adjusted by regulating the threaded installation length of the eight adjusting rods, allowing for effective adjustment of the landing gear installation attitude angle within a small range, thereby improving the accuracy of the landing gear drop test. Attached Figure Description

[0013] Figure 1 This is a schematic diagram illustrating the application of this utility model.

[0014] Figure 2 This is a schematic diagram of the structure of this utility model.

[0015] Figure 3 This is a schematic diagram of the slide groove of this utility model.

[0016] Figure 4 This is a structural schematic diagram of the pulley of this utility model.

[0017] Figure 5 This is a structural schematic diagram of the bearing housing of this utility model.

[0018] Figure 6 This is a structural schematic diagram of the pulley shaft of this utility model.

[0019] Figure 7 This is a schematic diagram of the bearing sleeve of this utility model.

[0020] Figure 8 This is a structural schematic diagram of the pulley seat of this utility model.

[0021] Figure 9This is a schematic diagram of the adjusting rod of this utility model.

[0022] Figure 10 This is a schematic diagram of the structure of the stop block of this utility model.

[0023] Figure 11 This is a structural schematic diagram of the stop block fixing plate of this utility model.

[0024] Among them, 01 is the suspended basket, 02 is the column of the drop test bench, and 03 is the suspended basket slide rail installation component of this utility model;

[0025] 1 is a sliding groove, 2 is a pulley, 3 is a standard fastening bolt, 4 is a pulley seat, 5 is an adjusting rod, 6 is a standard fastening nut, 7 is a standard spring washer, 8 is a stop block, 9 is a stop block fixing plate, 101 is a straight groove, 201 is a bearing seat, 202 is a pulley shaft, 203 is a bearing sleeve, 204 is a bearing, 205 is a bearing gasket, 206 is a pulley shaft gasket, 207 is a standard small hexagonal flat nut, 208 is a standard cotter pin, 209 is a mounting lug, 210 is a bearing seat mounting hole, and 211 is a pulley shaft mounting hole. 212 is a straight column, 213 is a threaded end, 214 is a cotter pin hole, 215 is a bearing mounting hole, 216 is a limiting platform, 401 is a bottom sliding plate, 402 is a vertical plate, 403 is a short reinforcing rib, 404 is a long reinforcing rib, 405 is a pulley mounting threaded hole, 501 is a limiting end, 502 is a hexagonal platform, 503 is a threaded end, 801 is a limiting block, 802 is a base plate, 803 is a mounting hole, 804 is a boss, 805 is a threaded hole, 901 is a mounting threaded hole, 902 is a fixing plate, and 903 is a square hole. Detailed Implementation

[0026] This section describes embodiments of the present invention, used to explain and illustrate the technical solutions of the present invention. Unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0027] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating directions or positional relationships, are based on the orientation or positional relationships in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or device referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include more than one of those features. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integrated connection; they can refer to a mechanical connection or a point connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Example 1:

[0030] A suspended platform pulley mounting assembly includes eight identical mounting assemblies. Four sets of mounting assemblies are installed at the front of the suspended platform, and the other four sets are symmetrically installed at the rear of the suspended platform. Among the mounting assemblies installed on the same side, two sets are installed on the upper left and right sides of the suspended platform, and the other two sets are installed on the lower left and right sides of the suspended platform. Each mounting assembly includes a slide groove 1, a pulley 2, a pulley seat 4, and an adjusting structure. The slide groove 1 is fixedly connected to the suspended platform, and the groove direction of the slide groove 1 is horizontal. The pulley 2 includes a first pulley and a second pulley. The first pulley is fixed to the outward side of the slide groove 1, and the second pulley is fixed to the pulley seat 4. The pulley seat 4 is slidably installed on the inward side of the slide groove 1. The adjusting structure is installed on the suspended platform and aligned with the inner side of the slide groove 1. The adjusting structure adjusts the position of the pulley seat 4 in the slide groove 1.

[0031] The pulley axle of the first pulley is aligned with the groove direction of the groove 1, and the roller of the first pulley is perpendicular to the pulley axle of the first pulley and on the same horizontal plane.

[0032] The pulley 2 includes a bearing seat 201, a pulley shaft 202, a bearing sleeve 203, and a bearing 204; the bearing seat 201 is a double-ear connection structure, the pulley shaft 202 is inserted between the double ears of the bearing seat 201, the bearing 204 is sleeved outside the pulley shaft 202 and is arranged between the double ears of the bearing seat 201, and a bearing sleeve 203 is sleeved outside the bearing 204.

[0033] The pulley seat 4 includes a bottom slide plate 401 and a vertical plate 402, the bottom slide plate 401 and the vertical plate 402 are fixedly connected and perpendicular to each other, the bottom slide plate 401 is fitted and installed in the chute 1 and can move along the chute in the chute 1, and the second pulley is installed on the vertical plate 402.

[0034] A triangular reinforcing rib is further provided between the bottom slide plate 401 and the vertical plate 402.

[0035] The distance adjustment structure includes a distance adjustment rod 5, a stop block 8, and a stop block fixing plate 9. The stop block fixing plate 9 is installed on the hanging basket, the stop block 8 is installed on the stop block fixing plate 9. A threaded hole 805 in the same direction as the groove direction of the chute 1 is provided at the horizontal center of the stop block 8. The distance adjustment rod 5 is installed in the threaded hole 805 through an external thread. One end of the distance adjustment rod 5 facing the chute 1 extends out, and the end of the extended part of the distance adjustment rod 5 is a limit end 501.

[0036] Embodiment 2:

[0037] A hanging basket pulley installation group includes a chute 1, a pulley 2, a standard fastener bolt 3, a pulley seat 4, a distance adjustment rod 5, a standard fastener nut 6, a standard fastener spring washer 7, a stop block 8, and a stop block fixing plate 9. When in use, 8 sets of the above-mentioned hanging basket pulley installation groups need to be installed. During assembly, refer to Figure 1 and Figure 2 : Coordinate the relative positions of 8 chutes 1 and 8 stop block fixing plates 9 and weld them fixedly on the edges of the upper and lower eight corners of the hanging basket respectively; then hang the hanging basket in the middle of the shock test bench column; then fasten 2 pulleys 2 to the pulley seat 4 through the fastening bolts 3, and complete this operation 8 times in total; then insert 8 pulley seats 4 into 8 chutes 1 correspondingly; then screw the fastening nut 6 onto the distance adjustment rod 5, then put the spring washer 7 onto the threaded end of the distance adjustment rod 5, and then screw the distance adjustment rod 5 into the threaded hole of the stop block 8, and complete this operation 8 times in total; then fasten 8 stop blocks 8 to 8 stop block fixing plates 9 through the fastening bolts 3 correspondingly;至此, the hanging basket pulley installation group assembly is completed. There is no installation in a narrow space in this installation process, making the installation process more efficient and convenient. And after the landing gear is installed, the installation positions of each pulley on the hanging basket can be adjusted by adjusting the threaded installation lengths of 8 distance adjustment rods 5, and the installation attitude angle of the landing gear can be effectively adjusted within a small range.

[0038] Preferably, the chute 1 is an overall square plate, and a "convex"-shaped straight groove 101 is opened in the middle, refer to Figure 3 .

[0039] Preferably, the pulley 2 includes a bearing housing 201, a pulley shaft 202, a bearing sleeve 203, a standard bearing 204, a bearing washer 205, a pulley shaft washer 206, a standard small hexagonal flat nut 207, and a standard cotter pin 208. The bearing housing 201 has a double-ear connection structure, with two mounting ears 209, four bearing housing mounting holes 210, and pulley shaft mounting holes 211, as shown in the reference. Figure 5 The pulley shaft 202 has a bolt-like structure, with a straight column 212, a threaded end 213, and a cotter pin hole 214, as shown in the reference. Figure 6 The bearing sleeve 203 is a cylindrical sleeve structure with a central hole that is symmetrically arranged on both sides. The left and right ends have bearing mounting holes 215, and the central hole is slightly smaller, forming a limiting platform 216. (Refer to...) Figure 7 Refer to the assembly instructions. Figure 4 Install two bearings 204 into the bearing mounting holes 215 at both ends of the bearing sleeve 203. Install one bearing washer 205 into the center hole of the limiting platform 216 of the bearing sleeve 203. Then install two bearing washers 205 at both ends of the bearing sleeve 203. Then, install the above parts as a whole between the two mounting lugs 209 of the bearing housing 201, with the center line coinciding with the center line of the pulley shaft mounting hole 211 of the bearing housing 201. Then, insert the pulley shaft 202 into the outside of the pulley shaft mounting hole 211 of the bearing housing 201 until it is fully inserted. Fit the pulley shaft washer 206 into the threaded end 213 of the pulley shaft 202, screw in the small hexagonal flat nut 207 until it is tight, and then insert the cotter pin 208 into the cotter pin hole 214 of the pulley shaft 202. At this point, the assembly of pulley 2 is completed.

[0040] Preferably, the pulley seat 4 is a right-angle mounting bracket, including a bottom sliding plate 401, a vertical plate 402, short reinforcing ribs 403, long reinforcing ribs 404, and pulley mounting threaded holes 405, as shown in the reference. Figure 8 The bottom slide plate 401 is shaped to fit the straight groove 101 of the slide 1, and the mounting threaded hole 405 is adapted to the bearing housing mounting hole 210.

[0041] Preferably, the adjusting rod 5 is an integral straight bolt structure, including a limiting end 501, a hexagonal platform 502, and a threaded end 503, as shown in the reference. Figure 9 .

[0042] Preferably, the stop block 8 includes a limiting block 801, a base plate 802, a mounting hole 803, a boss 804, and a threaded hole 805, as shown in the figure. Figure 10 The threaded hole 805 is compatible with the threaded end 503 of the adjusting rod 5.

[0043] Preferably, the stop fixing plate 9 includes a threaded hole 901, a fixing plate 902, and a square hole 903, as shown in the figure. Figure 11. The installation threaded hole 901 is adapted to the installation hole 803 of the stop block 8, and the square hole 903 is adapted to the limiting block 801 of the stop block 8.

[0044] Embodiment 3:

[0045] As Figures 1 to 11 shown, the utility model provides a hanging basket pulley installation group, which includes a chute 1, a pulley 2, a standard part fastening bolt 3, a pulley seat 4, an adjustable rod 5, a standard part fastening nut 6, a standard part spring washer 7, a stop block 8, and a stop block fixing plate 9. The pulley 2 includes a bearing seat 201, a pulley shaft 202, a bearing sleeve 203, a standard part bearing 204, a bearing gasket 205, a pulley shaft gasket 206, a standard part small hexagon flat nut 207, and a standard part split pin 208.

[0046] Furthermore, the chute 1 is an overall square plate with a "convex" - shaped straight groove 101 opened in the middle. Refer to Figure 3 . The bearing seat 201 is a double - ear connection structure, provided with two mounting ear pieces 209, 4 bearing seat mounting holes 210 and a pulley shaft mounting hole 211. Refer to Figure 5 ; The pulley shaft 202 is a bolt - like structure, provided with a straight column 212, a threaded end 213 and a split pin hole 214. Refer to Figure 6 ; The bearing sleeve 203 is a cylindrical sleeve structure, the central hole is a left - right symmetric hole, the left and right ends are bearing mounting holes 215, and the middle hole is slightly smaller, forming a limiting platform 216. Refer to Figure 7 ; The standard part bearing 204 selects a national standard part bearing adapted to the bearing sleeve 203; The bearing gasket 205 is adapted to the standard part bearing 204 and the pulley shaft 202; The pulley shaft gasket 206 is adapted to the pulley shaft 202; The standard part small hexagon flat nut 207 selects a national standard part small hexagon flat nut adapted to the threaded end 213 of the pulley shaft 202; The standard part split pin 208 selects a national standard part split pin adapted to the split pin hole 214 of the pulley shaft 202. The standard part fastening bolt 3 selects a national standard part hexagon head bolt adapted to the bearing seat mounting hole 210. The pulley seat 4 is an overall right - angle mounting foot - rest, including a bottom slide plate 401, a vertical plate 402, a short reinforcing rib 403, a long reinforcing rib 404 and a pulley installation threaded hole 405. Refer to Figure 8 , where the shape of the bottom slide plate 401 is adapted to the straight groove 101 of the chute 1, and the installation threaded hole 405 is adapted to the bearing seat mounting hole 210. The adjustable rod 5 is an overall straight column bolt structure, including a limiting end 501, a hexagonal platform 502 and a threaded end 503. Refer to Figure 9The standard fastening nut 6 is a national standard hexagonal nut that is compatible with the threaded end 503 of the adjusting rod 5. The standard spring washer 7 is a national standard spring washer that is compatible with the threaded end 503 of the adjusting rod 5. The stop block 8 includes a limiting block 801, a base plate 802, a mounting hole 803, a boss 804, and a threaded hole 805, as shown in the reference. Figure 10 The threaded hole 805 is adapted to the threaded end 503 of the adjusting rod 5. The stop block fixing plate 9 includes a mounting threaded hole 901, a fixing plate 902, and a square hole 903, as shown in the reference. Figure 11 The threaded hole 901 is adapted to the mounting hole 803 of the stop 8, and the square hole 903 is adapted to the limiting block 801 of the stop 8.

[0047] Furthermore, refer to Figure 4 Install two bearings 204 into the bearing mounting holes 215 at both ends of the bearing sleeve 203, and install one bearing washer 205 into the center hole of the limiting platform 216 of the bearing sleeve 203; then install two bearing washers 205 at both ends of the bearing sleeve 203 respectively; then install the above parts as a whole between the two mounting lugs 209 of the bearing housing 201, with the center line coinciding with the center line of the pulley shaft mounting hole 211 of the bearing housing 201; then insert the pulley shaft 202 into the outside of the pulley shaft mounting hole 211 of the bearing housing 201 to the bottom, put the pulley shaft washer 206 into the threaded end 213 of the pulley shaft 202, screw in the small hexagonal flat nut 207 until it is tight, and then insert the cotter pin 208 into the cotter pin hole 214 of the pulley shaft 202; at this point, the assembly of pulley 2 is completed.

[0048] This utility model requires eight sets to be installed on the suspended platform during use. Refer to the assembly instructions. Figure 1 and Figure 2 The eight sliding grooves 1 and eight stop block fixing plates 9 are coordinated and welded to the eight corners of the suspended platform. The suspended platform is then suspended from the middle of the vertical column of the drop test bench. Two pulleys 2 are then fastened to pulley seats 4 using bolts 3, repeated eight times. The eight pulley seats 4 are then inserted into the corresponding eight sliding grooves 1. The fastening nuts 6 are screwed into the adjusting rods 5, and spring washers 7 are fitted onto the threaded ends of the adjusting rods 5. The adjusting rods 5 are then screwed into the threaded holes of the stop blocks 8, repeated eight times. Finally, the eight stop blocks 8 are fastened to the corresponding eight stop block fixing plates 9 using bolts 3. At this point, the suspended platform pulley assembly is complete. The installation position of each pulley on the suspended platform can be adjusted by adjusting the threaded installation length of the eight adjusting rods 5.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should be covered within the protection scope of this utility model.

Claims

1. A suspended platform pulley mounting assembly, characterized in that, It includes eight identical installation components. Four installation components are installed in front of the suspended platform, and the other four installation components are symmetrically installed behind the suspended platform. Among the installation components installed on the same side, two installation components are installed on the upper left and right sides of the suspended platform, and the other two installation components are installed on the lower left and right sides of the suspended platform. One installation component includes a slide (1), a pulley (2), a pulley seat (4), and an adjustment structure. The slide (1) is fixedly connected to the suspended platform, and the groove direction of the slide (1) is horizontal. The pulley (2) includes a first pulley and a second pulley. The first pulley is fixed on the outer side of the slide (1), and the second pulley is fixed on the pulley seat (4). The pulley seat (4) is slidably installed on the inner side of the slide (1). The adjustment structure is installed on the suspended platform and aligned with the inner side of the slide (1). The adjustment structure adjusts the position of the pulley seat (4) in the slide (1).

2. The suspended platform pulley mounting assembly according to claim 1, characterized in that, The pulley shaft of the first pulley is aligned with the groove direction of the groove (1), and the roller of the first pulley is perpendicular to the pulley shaft of the first pulley and on the same horizontal plane.

3. The suspended platform pulley mounting assembly according to claim 1, characterized in that, The pulley (2) includes a bearing housing (201), a pulley shaft (202), a bearing sleeve (203), and a bearing (204). The bearing housing (201) has a double-ear connection structure. The pulley shaft (202) is inserted between the double ears of the bearing housing (201). The bearing (204) is sleeved outside the pulley shaft (202) and located between the double ears of the bearing housing (201). The bearing sleeve (203) is sleeved outside the bearing (204).

4. The suspended platform pulley mounting assembly according to claim 1, characterized in that, The pulley seat (4) includes a bottom slide plate (401) and a vertical plate (402). The bottom slide plate (401) and the vertical plate (402) are fixedly connected and perpendicular to each other. The bottom slide plate (401) is fitted in the slide groove (1) and can move along the groove in the slide groove (1). The second pulley is installed on the vertical plate (402).

5. A suspended platform pulley mounting assembly according to claim 4, characterized in that, A triangular reinforcing rib is also provided between the bottom sliding plate (401) and the vertical plate (402).

6. The suspended platform pulley mounting assembly according to claim 1, characterized in that, The adjustable distance structure includes an adjustable distance rod (5), a stop block (8) and a stop block fixing plate (9). The stop block fixing plate (9) is installed on the basket, and the stop block (8) is installed on the stop block fixing plate (9). The stop block (8) has a threaded hole (805) in the horizontal center that is in the same direction as the groove direction of the slide (1). The adjustable distance rod (5) is installed in the threaded hole (805) through external thread. The adjustable distance rod (5) extends out of one end toward the slide (1), and the end of the extended part of the adjustable distance rod (5) is a limiting end (501).

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