A beam height direction positioning mechanism

Abstract

The present invention discloses a truss height positioning mechanism, comprising a bracket assembly, a positioning rod mechanism and a spring assembly respectively arranged on the bracket assembly; the positioning rod mechanism comprises two sets of slide rail assemblies arranged opposite and spaced apart, an upper magnet assembly located between the two sets of slide rail assemblies and sliding vertically along the slide rail assemblies, and a positioning rod assembly sliding horizontally along the slide rail assemblies, wherein the positioning rod mechanism is movably connected to the spring assembly. The structure is reliable and has good performance. Through the cooperation of the positioning rod mechanism and the spring assembly, reliable positioning of the truss height direction is achieved. During the drilling process, the positioning rod is inserted into the drilled hole through the cooperation between the upper magnet, the lower magnet and the spring assembly, thereby reliably fixing the hole, thereby ensuring stable drilling of multiple holes on the truss, convenient operation and accurate positioning.

Description

Technical Field

[0001] The invention relates to the technical field of manufacturing and assembling large-diameter thin-walled cylindrical riveted parts, and in particular to a truss height direction positioning mechanism. Background Art

[0002] Schematic diagram of riveting between trusses and skins in large diameter thin-walled cylindrical riveted parts Figure 1 As shown. The fixed beam is the T-shaped truss. After the T-shaped truss, middle frame, end frame and other riveted parts are assembled, the skin needs to be wrapped around the outer surface of the cylinder. The rivet holes in the truss are first expanded, and then the rivet holes in the skin (skin thickness 1.2-1.5mm) are matched. Finally, the skin is riveted to the T-shaped truss. The rivet holes of the T-shaped truss need to be drilled first. The distance between the two rivet holes is less than or equal to 50mm according to aerospace specifications.

[0003] There are two main methods for processing the rivet holes on traditional trusses that are riveted to the skin: one is the marking method, which involves marking directly on the T-shaped truss, determining the hole location, and then directly drilling the holes on a machine tool. However, the marking method results in large dimensional errors. The second is the mold method, which involves manufacturing a rectangular mold with holes that are the same size, number, and location as the designed holes on the truss. The first hole is then marked on the truss, and the mold is then attached to the truss. The remaining holes are then machined through the holes in the mold. However, the mold method uses a specialized mold that is different for different truss types, is not universal, and has poor results.

[0004] Furthermore, when drilling holes in stringers, vertical positioning is typically achieved by using mechanical components such as hydraulic rams to clamp the stringers from top to bottom, thereby maintaining their height stability. However, the varying types and lengths of stringers make conventional clamping methods inapplicable. Furthermore, the clamping force required is difficult to control, which can easily damage the stringers and cause deformation during drilling, resulting in poor vertical positioning of the stringers. Summary of the Invention

[0005] The object of the present invention is to provide a beam height direction positioning mechanism to solve the problem that the existing riveting holes on beams have poor positioning effect on the beam height direction.

[0006] The technical solution of the present invention to solve the above technical problems is as follows: a beam height direction positioning mechanism, comprising a bracket assembly and a positioning rod mechanism and a spring assembly respectively arranged on the bracket assembly;

[0007] The positioning rod mechanism includes two sets of slide rail assemblies that are relatively and spaced apart, an upper magnet assembly located between the two sets of slide rail assemblies and sliding vertically along the slide rail assemblies, and a positioning rod assembly that slides horizontally along the slide rail assemblies. The positioning rod mechanism is movably connected to the spring assembly.

[0008] Furthermore, the slide rail assembly includes a slide rail body with an L-shaped structure, a vertical slide groove and a horizontal slide groove opened in the slide rail body, and a limit block arranged in the horizontal slide groove, and the limit block is arranged close to the direction of the upper magnet assembly, and a lower magnet is arranged below the end of the horizontal slide groove away from the limit block, the positioning rod assembly slides along the horizontal slide groove, and the upper magnet assembly slides along the vertical slide groove.

[0009] Furthermore, the positioning rod assembly includes a positioning rod, a sliding magnet arranged on the upper surface of the positioning rod, and a telescopic slider arranged on the upper side of the positioning rod. A groove is provided on the upper side of the positioning rod, and a compression spring is provided in the groove. The telescopic slider is connected to the compression spring and moves along the groove. The spring assembly is movably connected to the positioning rod.

[0010] Furthermore, the positioning rod includes an end, an upper rod connected to the end, and a lower rod connected to the lower end of the upper rod. The diameter of the upper rod is larger than the diameter of the lower rod. The telescopic slider and the compression spring are both arranged on the end.

[0011] Furthermore, the spring assembly includes a baffle arranged on the bracket assembly, a spring shaft connected between the baffle and the positioning rod, and a spring arranged on the spring shaft. The spring shaft and the positioning rod are hinged by a pin shaft. A long hole is opened on the baffle, and the end of the spring shaft away from the positioning rod extends out of the long hole. The two ends of the spring are respectively limited at the positions of the baffle and the pin shaft.

[0012] Furthermore, a slide rod is provided in the baffle, and the slide rod is inserted into the strip groove on the spring shaft, and the strip groove is opened at the part of the spring shaft close to the baffle.

[0013] Furthermore, the sliding rod includes a sliding plate located in the baffle and a rod body connected to the sliding plate, and the rod body is inserted into the strip groove of the spring shaft.

[0014] Furthermore, the upper magnet assembly includes an upper magnet slider, an upper magnet arranged on the lower surface of the upper magnet slider, and square slide bars respectively arranged at both ends of the upper magnet slider, and the square slide bars slide up and down along the vertical slide groove of the slide rail assembly.

[0015] Furthermore, the bracket assembly includes a support plate and pillars arranged at the lower ends of the support plate, and the positioning rod mechanism and the spring assembly are arranged on the support plate.

[0016] Furthermore, a square embedded block is provided on the lower surface of the support plate, and a square groove matching the square embedded block is provided inside the pillar.

[0017] The present invention has the following beneficial effects: the present invention provides a truss height direction positioning mechanism, which has a reliable structure and good performance. Through the cooperation of the positioning rod mechanism and the spring assembly, reliable positioning of the truss height direction is achieved. During the punching process, the positioning rod is inserted into the punched hole through the cooperation relationship between the upper magnet, the lower magnet and the spring assembly, so as to be reliably fixed, thereby ensuring stable punching operation of multiple holes on the truss, convenient operation and accurate positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 Schematic diagram of the positioning rod mechanism structure in the present invention;

[0020] Figure 3 Schematic diagram of the structure of the slide rail assembly in the present invention;

[0021] Figure 4 This is a front view of the slide rail assembly of the present invention;

[0022] Figure 5 This is a schematic structural diagram of the positioning rod assembly in the present invention;

[0023] Figure 6 It is a cross-sectional view of the positioning rod assembly in the present invention;

[0024] Figure 7 Schematic diagram of the spring assembly structure of the present invention;

[0025] Figure 8 Schematic diagram of the sliding rod structure in the present invention;

[0026] Figure 9 This is a schematic structural diagram of the upper magnet assembly in the present invention;

[0027] Figure 10 Schematic diagram of the structure of the bracket assembly in the present invention;

[0028] Figure 11 Schematic diagram of the support structure of the present invention;

[0029] In the figure: 1-bracket assembly, 2-positioning rod mechanism, 3-spring assembly, 20-slide rail assembly, 21-upper magnet assembly, 22-positioning rod assembly, 201-slide rail body, 202-vertical slide groove, 203-horizontal slide groove, 204-limit block, 205-lower magnet, 220-positioning rod, 221-sliding magnet, 222-telescopic slider, 223-groove, 224-compression spring, 2201-end, 2202-upper rod, 2203-lower rod, 30-baffle, 31-spring shaft, 32-spring, 33-slide rod, 34-strip groove, 330-slide plate, 331-rod body, 210-upper magnet slider, 211-upper magnet, 212-square slide rod, 10-support plate, 11-pillar, 12-square embedded block, 13-square groove. DETAILED DESCRIPTION

[0030] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0031] like Figure 1 As shown, a truss height positioning mechanism includes a bracket assembly 1, a positioning rod mechanism 2, and a spring assembly 3, respectively disposed on the bracket assembly 1. The spring assembly 3 and the positioning rod mechanism 2 are each connected to the bracket assembly 1 via screws, and the spring assembly 3 and the positioning rod mechanism 2 are hingedly connected via a pin. The coordination between the positioning rod mechanism 2 and the spring assembly 3 enables reliable positioning of the truss height. During the drilling process, the coordination between the upper magnet 211, the lower magnet 205, and the spring assembly 3 allows the positioning rod 220 to be inserted into the drilled hole, thereby providing reliable fixation.

[0032] like Figures 2 to 4As shown, the positioning rod mechanism 2 includes two sets of slide rail assemblies 20 that are relatively and spaced apart, an upper magnet assembly 21 located between the two sets of slide rail assemblies 20 and sliding vertically along the slide rail assemblies 20, and a positioning rod assembly 22 sliding horizontally along the slide rail assembly 20, and the positioning rod mechanism 2 is movably connected to the spring assembly 3. The upper magnet assembly 21 slides in the vertical direction along the slide rail assembly 20, and the positioning rod assembly 22 slides in the horizontal direction along the slide rail assembly 20. The slide groove trajectories of the horizontal slide grooves 203 of the two sets of slide rail assemblies 20 are opposite. Among them, the slide rail assembly 20 includes a slide rail body 201 with an L-shaped structure, a vertical slide groove 202 and a horizontal slide groove 203 opened in the slide rail body 201, and a limit block 204 arranged in the horizontal slide groove 203, and the limit block 204 is arranged close to the direction of the upper magnet assembly 21. The position of the limit stop 204 is the sliding end point of the horizontal slide 203, which is also the starting point of automatic rebound. The design of the limit stop 204 can limit the sliding distance of the positioning rod assembly 22 and prevent the slider in the positioning rod assembly 22 from sliding in the opposite direction. A lower magnet 205 is provided below the end of the horizontal slide 203 away from the limit stop 204. The lower magnet 205 is located at the sliding starting point of the horizontal slide 203 and is also the automatic rebound end point. The design of the lower magnet 205 can effectively prevent the spring 32 from insufficient thrust when the positioning rod assembly 22 approaches the automatic rebound end point, and the lower magnet 205 is used to attract the positioning rod assembly 22 to the sliding starting point.

[0033] like Figures 5 and 6 As shown, the positioning rod assembly 22 includes a positioning rod 220, a sliding magnet 221 disposed on the upper surface of the positioning rod 220, and a telescopic slider 222 disposed on the upper side of the positioning rod 220. The upper side of the positioning rod 220 is provided with a groove 223, in which a compression spring 224 is disposed. The telescopic slider 222 is connected to the compression spring 224 and moves along the groove 223, thereby movably connecting the spring assembly 3 to the positioning rod 220. The telescopic slider 222 slides in the horizontal slot 203 of the slide rail assembly 20, driving the positioning rod 220 to slide, thereby positioning the positioning rod 220 in the drilled hole as needed. The hinge hole of the positioning rod 220 is hinged to the spring shaft 31 of the spring assembly 3 via a pin. The positioning rod 220 and the sliding magnet 221 are fastened by glue, the compression spring 224 is first placed in the groove 223 of the positioning rod 220, and the telescopic slider 222 is then placed in the groove 223 of the positioning rod 220. When the compression spring 224 is compressed, the telescopic slider 222 can be pressed into the groove 223 of the positioning rod 220.

[0034] The positioning rod 220 includes an end 2201, an upper rod 2202 connected to the end 2201, and a lower rod 2203 connected to the lower end of the upper rod 2202. The diameter of the upper rod 2202 is larger than the diameter of the lower rod 2203, thereby forming a stepped axis. The lower rod 2203 with a smaller diameter at the lower end can be reliably positioned in the hole punched on the beam, thereby improving the positioning effect.

[0035] like Figure 7 As shown, the spring assembly 3 includes a baffle 30 disposed on the bracket assembly 1, a spring shaft 31 coupled between the baffle 30 and the positioning rod 220, and a spring 32 disposed on the spring shaft 31. The spring shaft 31 is hinged to the positioning rod 220 via a pin. The baffle 30 is provided with an elongated hole, and the end of the spring shaft 31 away from the positioning rod 220 extends out of the elongated hole. The two ends of the spring 32 are respectively limited to the baffle 30 and the pin. The baffle 30 is fixed to the bracket assembly 1 by screws, and the spring shaft 31 is hinged to the positioning hinge hole via a pin. A slide rod 33 is disposed within the baffle 30 and is inserted into a strip groove 34 on the spring shaft 31. The strip groove 34 is provided in the portion of the spring shaft 31 near the baffle 30. First, place the spring 32 on the spring shaft 31 in a compressed state. Then, insert the slide bar 33 parallel to the strip groove 34 of the spring shaft 31. Align the round rod portion of the slide bar 33 with the strip groove 34 of the spring shaft 31. Rotate the slide bar 33 90 degrees and screw the slide bar 33 to the baffle 30. The slide bar 33 blocks and limits the spring 32 on the spring shaft 31.

[0036] like Figure 8 As shown, in order to improve the structural stability of the slide rod 33, in the present invention, the slide rod 33 includes a slide plate 330 located in the baffle 30 and a rod body 331 connected to the slide plate 330, and the rod body 331 is inserted into the strip groove 34 of the spring shaft 31.

[0037] like Figure 9As shown, the upper magnet assembly 21 includes an upper magnet slider 210, an upper magnet 211 disposed on the lower surface of the upper magnet slider 210, and square slide bars 212 disposed at each end of the upper magnet slider 210. The square slide bars 212 slide up and down along the vertical slot 202 of the slide rail assembly 20. The upper magnet slider 210 and the upper magnet 211 are bonded together by glue. The square slide bars 212 of the upper magnet slider 210 can slide up and down the slide rail assembly 20 to adjust the distance between the adsorption positioning rod assembly 22. When the positioning rod assembly 22 reaches the end of its sliding, it can adsorb the slide rail assembly 20 and move upward along the track. When it reaches the upper vertex, it can borrow the driving force of the spring 32 to disengage the adsorption force between the upper magnet 211 and the sliding magnet 221. The upper magnet slider 210 is fixed to the vertical slot 202 of the slide rail assembly 20 by friction after the nut is tightened. It can also be raised between the square slide bar 212 of the upper magnet slider 210 and the square groove 13 of the vertical slot 202.

[0038] like Figures 10 and 11 As shown, the bracket assembly 1 includes a support plate 10 and struts 11 disposed around the lower ends of the support plate 10. The positioning rod mechanism 2 and the spring assembly 3 are mounted on the support plate 10. A square insert 12 is provided on the lower surface of the support plate 10, and a square slot 13 is provided within the strut 11 to match the square insert 12. The support plate 10 first inserts its square insert 12 into the square slot 13 of the strut 11. The strut 11 and the support plate 10 are then secured with screws and bolts, resulting in a reliable structure and a stable and secure connection.

[0039] During use, the stringer is marked to determine the position of the first riveting hole, and then the positioning rod mechanism 2 is manually slid to the sliding end point of the slide rail, and is attracted by the upper magnet 211. When it reaches the upper return track of the sliding track, it is manually fixed. The stringer is placed on the horizontal positioning mechanism, and the position of the first hole determined by the marking is aligned with the drill tip. The drilling machine is started and the first hole is drilled. After the drilling is completed, the stringer is moved below the sliding starting point, and then the positioning rod mechanism 2 is slowly released to allow the positioning rod 220 to be inserted into the first drilled hole.

[0040] Then, the second hole is drilled. After the second hole is drilled, the positioning rod 220 is inserted into the first hole. The stringer is manually pulled, and the positioning rod 220 moves along the sliding track from the sliding starting point to the sliding end point. At this time, the positioning rod mechanism 2 is attracted by the upper magnet 211. When it reaches the upper vertex, it can borrow the driving force of the spring 32 to break away from the adsorption force between the upper magnet 211 and the sliding magnet 221, move along the upper return track, and after entering the sliding inclined surface, it will be attracted by the lower magnet 205, and the positioning rod 220 will return to the sliding starting point. The positioning rod 220 is inserted into the second hole. Repeating the above steps in sequence can complete the hole drilling operation on the stringer.

[0041] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A beam height positioning mechanism, characterized in that: It comprises a bracket assembly (1), and a positioning rod mechanism (2) and a spring assembly (3) respectively arranged on the bracket assembly (1); The positioning rod mechanism (2) comprises two sets of slide rail assemblies (20) that are arranged oppositely and at intervals, an upper magnet assembly (21) located between the two sets of slide rail assemblies (20) and vertically sliding along the slide rail assemblies (20), and a positioning rod assembly (22) that slides horizontally along the slide rail assemblies (20), and the positioning rod mechanism (2) is movably connected to the spring assembly (3); The slide rail assembly (20) comprises a slide rail body (201) in an L-shaped structure, a vertical slide groove (202) and a horizontal slide groove (203) provided in the slide rail body (201), and a limit block (204) provided in the horizontal slide groove (203), wherein the limit block (204) is provided close to the upper magnet assembly (21), and a lower magnet (205) is provided below one end of the horizontal slide groove (203) away from the limit block (204), the positioning rod assembly (22) slides along the horizontal slide groove (203), and the upper magnet assembly (21) slides along the vertical slide groove (202); The positioning rod assembly (22) includes a positioning rod (220), a sliding magnet (221) arranged on the upper surface of the positioning rod (220), and a telescopic slider (222) arranged on the upper side of the positioning rod (220); a groove (223) is provided on the upper side of the positioning rod (220); a compression spring (224) is provided in the groove (223); the telescopic slider (222) is connected to the compression spring (224) and moves along the groove (223); the spring assembly (3) is movably connected to the positioning rod (220); The positioning rod (220) comprises an end (2201), an upper rod portion (2202) connected to the end (2201), and a lower rod portion (2203) connected to the lower end of the upper rod portion (2202); the diameter of the upper rod portion (2202) is larger than the diameter of the lower rod portion (2203); the telescopic slider (222) and the compression spring (224) are both arranged on the end (2201); The spring assembly (3) includes a baffle (30) arranged on the bracket assembly (1), a spring shaft (31) connected between the baffle (30) and the positioning rod (220), and a spring (32) arranged on the spring shaft (31), wherein the spring shaft (31) and the positioning rod (220) are hingedly connected via a pin, a long hole is provided on the baffle (30), and an end of the spring shaft (31) away from the positioning rod (220) extends out of the long hole, and two ends of the spring (32) are respectively limited at the baffle (30) and the pin position; A slide rod (33) is provided in the baffle (30), and the slide rod (33) is inserted into a strip groove (34) on the spring shaft (31). The strip groove (34) is provided at a portion of the spring shaft (31) close to the baffle (30); The sliding rod (33) comprises a sliding plate (330) located in the baffle (30) and a rod body (331) connected to the sliding plate (330), and the rod body (331) is inserted into the strip groove (34) of the spring shaft (31).

2. The beam height direction positioning mechanism according to claim 1, characterized in that: The upper magnet assembly (21) comprises an upper magnet slider (210), an upper magnet (211) arranged on the lower surface of the upper magnet slider (210), and square slide bars (212) respectively arranged at both ends of the upper magnet slider (210), wherein the square slide bars (212) slide up and down along the vertical slide groove (202) of the slide rail assembly (20).

3. The beam height positioning mechanism according to claim 1 or 2, characterized in that: The bracket assembly (1) comprises a support plate (10) and pillars (11) arranged at the lower ends of the support plate (10), and the positioning rod mechanism (2) and the spring assembly (3) are arranged on the support plate (10).

4. The beam height positioning mechanism according to claim 3, characterized in that: A square embedded block (12) is provided on the lower surface of the support plate (10), and a square groove (13) matching the square embedded block (12) is provided inside the pillar (11).

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