Bailey piece truss
By using a split male and female connector design, combined with limiting components and guide plates, the problem of insufficient connection strength of Bailey truss was solved, achieving higher connection stability and service life, and improving load-bearing capacity and assembly efficiency.
Patent Information
- Application Number
- CN202423106399.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-16
AI Technical Summary
When existing Bailey trusses are fixed with connecting pins, the connection strength is insufficient, making them prone to detachment, and the connection becomes unstable after long-term use.
It adopts a split male and female connector structure. The male connector consists of two plates with an extension and a guide bevel. Combined with limiting parts and mating parts, it can achieve stable insertion and pre-fixation of the male and female connectors.
It improves the connection stability and service life of Bailey trusses, reduces stress concentration caused by thermal expansion and contraction of materials or uneven stress, enhances load-bearing capacity, and improves assembly efficiency.
Smart Images
Figure CN223548721U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of truss technology, and in particular to a Bailey plate truss. Background Technology
[0002] Bailey panels, also known as Bailey frames, Bailey beams, or trusses, are prefabricated load-bearing components widely used in various construction fields.
[0003] Existing Bailey panels generally consist of upper and lower chord assemblies, vertical members, and diagonal members. The vertical members are fixed to the upper and lower chord assemblies by welding. Each upper and lower chord assembly includes two chord members with an inner groove between them. The ends of the upper and lower chord members have male and female joints, both types of joints having connecting pin holes. The two sets of Bailey panel trusses are fixedly connected by connecting pins.
[0004] Regarding the aforementioned technologies, the applicant believes that the method of fixing the two sets of Bailey trusses solely with connecting pins may result in the connecting pins coming loose after prolonged use, and the connection strength needs to be improved. Utility Model Content
[0005] To improve the structural strength of the two sets of trusses, this application provides a Bailey plate truss.
[0006] The Bailey truss provided in this application adopts the following technical solution:
[0007] A Bailey truss includes two sets of parallel upper and lower chord groups, a vertical member connecting the two chord groups, an inclined member inclined between the two chord groups, and a connecting pin. Each of the upper and lower chord groups has a female connector and a male connector at both ends. The female connector includes female plates respectively disposed on opposite outer walls of the chord group, each female plate having a female hole penetrating both end faces. The male connector includes male plates respectively disposed on the inner wall of the chord group, with a gap between the two male plates. Each male plate has an extension horizontally extending outward from the outer side of the chord group, the extension having a male connector. The extension is inserted into the inner side of the chord group of the other truss, and the female and male connectors are fixed by the connecting pin.
[0008] By adopting the above technical solution, the male connector structure, compared with the existing technology, is composed of two separate plates from a single piece. This allows the male connector to better adapt to deformation in different directions under stress. The presence of a gap reduces stress concentration caused by thermal expansion and contraction of the material or uneven stress. This helps extend the service life of the Bailey panels and improve their load-bearing capacity.
[0009] Optionally, the length of the extension is equal to the distance from the end of the upper and lower chord assemblies to the vertical rod.
[0010] By adopting the above technical solution, the length of the extension is equal to the distance from the end of the chord group to the vertical member, so that when the male connector is inserted into the inner groove of another truss, the ends of the two trusses are fitted together when the male connector abuts the vertical member, thereby improving the connection stability of the two trusses.
[0011] Optionally, a guide ramp is provided on the side of the extension away from the upper and lower chord assemblies.
[0012] By adopting the above technical solution and setting the guide slope, the process of inserting the extension of the male connector into the inner groove is smoother, thereby improving the assembly efficiency between trusses.
[0013] Optionally, the male and female connectors are provided with reinforcing grooves on their end faces facing the center of the upper and lower chord groups, and the cross-section of the reinforcing grooves in the vertical direction and the length direction of the chord group is U-shaped.
[0014] By adopting the above technical solution and strengthening the groove design, the structural strength of the male connector and female connector block is improved.
[0015] Optionally, guide plates for guiding the insertion of male connectors are provided on both sides of the bottom of the upper and lower chord assemblies, and the guide plates are respectively provided on opposite sides of the vertical rod.
[0016] By adopting the above technical solution, the guide plate can facilitate the insertion of the extension into the inner groove, guide the insertion of the extension, and ensure the fit between the extension and the upper chord assembly.
[0017] Optionally, the inner grooves of the upper and lower chord assemblies are further provided with support plates for the end of the male connector to abut against.
[0018] By adopting the above technical solution, the support plate can position the insertion of the male connector, while increasing the contact area between the male connector and the chord assembly, thus improving the connection stability of the two trusses.
[0019] Optionally, the guide plate is provided with a limiting member for restricting the male connector from dislodging, and the side wall of the male connector has a mating member adapted to the limiting member, thereby achieving the pre-fixation of the male connector on the guide plate through the limiting member and the mating member.
[0020] By adopting the above technical solution, the cooperation of the limiting component and the mating component can achieve a pre-fixing effect on the installation of the male connector and the chord assembly, so that the construction personnel do not need to use additional tools to fix the male connector, thereby improving the welding and fixing efficiency of the male connector.
[0021] Optionally, the limiting member is a limiting tooth surface, which is arranged along the length direction of the guide plate. The male connector has a limiting groove corresponding to the limiting tooth surface. The mating member is a limiting spring that is rotatably installed in the limiting groove and a limiting spring that connects to the limiting spring.
[0022] By adopting the above technical solution, a form of limiting component and mating component is disclosed. When the male connector is inserted, the limiting spring moves along the limiting tooth surface toward the center of the chord assembly. The limiting spring and the limiting tooth surface mate, reducing the probability of the male connector disengaging from the guide plate.
[0023] Optionally, the limiting member is an elastic limiting strip, one end of which is fixed to the guide plate, and the other end gradually tilts outward toward the outside of the chord assembly. The mating member is an elastic groove provided on the side wall of the male connector and mating with the elastic limiting strip.
[0024] By adopting the above technical solution, another form of limiting component and mating component is disclosed. When the male connector is inserted, the elastic limiting strip can play an elastic clamping role on the side wall of the male connector, and also achieve the pre-fixing effect of the male connector.
[0025] Optionally, the limiting member is an elastic plunger fixed to the guide plate, and the male connector sidewall has a locking groove for the plunger head of the elastic plunger to be engaged.
[0026] By adopting the above technical solution, another form of limiting component and mating component is disclosed. When the male connector is inserted, the plunger head is locked into the locking groove, which also realizes the pre-fixation of the male connector and the guide plate. The structure is simple and the assembly is convenient.
[0027] In summary, this application includes at least one of the following beneficial technical effects:
[0028] 1. This application divides the male connector into two separate plates, which allows the male connector to better adapt to deformation in different directions when under stress. At the same time, the existence of the gap can reduce stress concentration caused by thermal expansion and contraction of materials or uneven stress.
[0029] 2. By setting a guide plate, this application can facilitate the insertion of the extension into the inner groove, which guides the insertion of the extension and ensures the fit between the extension and the upper chord assembly;
[0030] 3. By setting up limiting parts and mating parts, this application can achieve a pre-fixing effect on the installation of male connectors and chord assembly, so that construction personnel do not need to use additional tools to fix the male connectors, thereby improving the welding and fixing efficiency of male connectors. Attached Figure Description
[0031] Figure 1 This is a schematic diagram of the overall structure of Example 1.
[0032] Figure 2 This is a partial structural schematic diagram of the male connector in Example 1.
[0033] Figure 3 This is a schematic diagram of the mating structure of the male connector and the guide plate in Example 2.
[0034] Figure 4 This is a cross-sectional schematic diagram of the male connector and guide plate after they are assembled in Example 2.
[0035] Figure 5 yes Figure 4 A magnified view of a portion of point A in the middle.
[0036] Figure 6 This is a cross-sectional schematic diagram of the male connector and guide plate after they are assembled in Example 3.
[0037] Figure 7 This is a cross-sectional schematic diagram of the male connector and guide plate after they are assembled in Example 4.
[0038] Explanation of reference numerals in the attached drawings: 1. Upper chord assembly; 11. Upper chord; 12. Inner groove; 13. Guide plate; 131. Guide slide groove; 14. Support plate; 15. Limiting tooth surface; 16. Elastic limiting bar; 17. Elastic plunger; 2. Lower chord assembly; 3. Vertical rod; 4. Diagonal rod; 5. Connecting pin; 6. Female connector; 61. Female connector plate; 611. Female connector hole; 62. Reinforcing groove; 7. Male connector; 71. Male connector plate; 711. Extension; 712. Male connector hole; 713. Guide slope; 72. Limiting groove; 73. Limiting ratchet; 731. Limiting spring; 74. Elastic groove; 75. Locking groove. Detailed Implementation
[0039] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.
[0040] This application discloses a Bailey truss.
[0041] Reference Figure 1 A Bailey truss includes two sets of parallel upper and lower chord groups 2, a vertical member 3 connecting the two sets of chords, an inclined member 4 inclined between the two chords, and a connecting pin 5 for connecting adjacent sets of trusses.
[0042] The upper and lower chord groups 2 have the same structure. This application uses the upper chord group 1 as an example to disclose the specific structure of the chord group. Each upper chord group 11 includes two horizontally spaced upper chord members 11, which are U-shaped channel steels. The U-shaped openings of the two upper chord members 11 face away from each other, and an inner groove 12 is formed between the two upper chord members 11.
[0043] Vertical members 3 are arranged vertically between the upper and lower chord groups 2, and their two ends are welded to the upper and lower chord groups 2. The truss has three vertical members 3, which are respectively set at both ends and the middle of the truss in the horizontal direction. Diagonal members 4 are inclined between two adjacent vertical members 3, and the diagonal members 4 are also fixed to the chord groups and vertical members 3 by welding.
[0044] The upper chord assembly 1 has a female connector 6 and a male connector 7 fixedly installed at both ends. The female connector 6 includes two female plates 61 respectively disposed on the outer side wall of the upper chord 11. The female connector 6 has female holes 611 penetrating both end faces.
[0045] Reference Figure 1 and Figure 2 The male connector 7 includes male connector plates 71 respectively disposed on both walls of the inner groove 12. A portion of the male connector plate 71 is inserted into the inner groove 12, and another portion extends horizontally to the outside of the upper chord assembly 1. The portion of the male connector plate 71 extending from the inner groove 12 is defined as an extension 711. The extension 711 has male connector holes 712 that penetrate both end faces and correspond to the female connector.
[0046] When assembling two adjacent sets of trusses, the extension 711 of one set of trusses is inserted into the inner groove 12 of the other set of trusses. When the male connector 712 and the female connector 611 are on the same axis, the connecting pin 5 is passed horizontally through the female connector 6 and the male connector 7 to achieve a fixed connection between the two sets of trusses.
[0047] Specifically, the male connector 7 and the female connector 6 have the same shape, both being rectangular blocks, and their width in the vertical direction is the same as the width of the outer groove of the upper chord 11. The female connector 6 also has a reinforcing groove 62 in the portion facing the middle of the upper chord 11. The reinforcing groove 62 has a U-shaped cross-section in both the vertical direction and the length direction of the upper chord 11.
[0048] The length of the extension 711 is equal to the distance from the top of the upper chord 11 to the top of the vertical member 3. That is, after the extension 711 is inserted into the inner groove 12 and the extension 711 and the vertical member 3 come into contact, the chords of the two trusses are in a close fit with each other, which helps to improve the connection strength of adjacent trusses.
[0049] The extension 711 also has a guide slope 713 at the end away from the vertical rod 3, and the guide slope 713 is evenly arranged on the outer edge of the end face of the extension 711.
[0050] In one embodiment of this application, a Bailey truss connection method is as follows: when assembling two adjacent trusses, the male connector 7 and the female connector 6 are first positioned by plugging them together, so that the male connector hole 712 and the female connector hole 611 are in a coaxial position. Then, the two trusses are fixed by passing the connecting pin 5 through the female connector 6 and the male connector 7 in sequence.
[0051] Example 2:
[0052] Reference Figure 3 To facilitate the connection between the male connector 7 and the upper chord 11, guide plates 13 are provided on both sides of the bottom of the inner groove 12 of the upper chord 11 to guide the insertion of the male connector 7. The guide plate 13 is a U-shaped plate with an upward opening, and its top has a guide groove 131 adapted to the width of the male connector 7.
[0053] Guide plates 13 are welded to opposite sides of the vertical plate. The upper chord assembly 1 also includes a support plate 14 welded to one end of the inner groove 12. The support plate 14 is located on the side of the vertical member 3 facing the middle of the upper chord 11. The support plate 14 can be used to position the insertion depth of the extension 711. After the extension 711 abuts against the support plate 14, the chord assemblies of two adjacent trusses are in abutting state.
[0054] Reference Figure 3 , Figure 4 and Figure 5 The guide plate 13 is also provided with a limiting member to prevent the male connector 7 from dislodging. The side wall of the male connector 7 facing the central axis of the upper chord 1 is provided with a fitting member that mates with the limiting member. Through the limiting member and the fitting member, the stability of the male connector 7 is ensured when welding the male connector 7 and the upper chord 11, thereby reducing the deviation between the female connector hole 611 and the male connector hole 712 when assembling the two trusses.
[0055] In this embodiment, the limiting member is a limiting tooth surface 15 disposed on the inner sidewall of the guide groove 131. The limiting tooth surface 15 is arranged along the length direction of the guide plate 13. The tips of the teeth of the limiting tooth surface 15 are inclined away from the male connector 7.
[0056] The male connector 7 has a limiting groove 72 on its side wall that corresponds to the limiting tooth surface 15, and the limiting groove 72 penetrates one end of the male connector 7. The mating part is a limiting ratchet 73 rotatably mounted to the inner wall of the limiting groove 72, and the tip of the limiting ratchet 73 extends in the opposite direction to the limiting tooth surface 15. A limiting spring 731 is also provided on the side of the limiting ratchet 73 away from the limiting tooth surface 15, which is connected to the bottom wall of the limiting groove 72. The limiting spring 731 provides a tendency for the limiting ratchet 73 to always rotate toward the limiting tooth surface 15.
[0057] Example 3: This example is identical to Example 2 except for the specific forms of the limiting component and the mating component.
[0058] Reference Figure 6In this embodiment, the limiting member is an elastic limiting strip 16, which is a metal strip with elastic deformation capability. The length direction of the elastic limiting strip 16 is parallel to the length direction of the guide plate 13, and one end of the elastic limiting strip 16 is fixed to the inner sidewall of the guide plate 13, while the other end gradually slopes outward toward the upper chord 11. The end of the elastic limiting strip 16 that is fixed to the guide plate 13 is located on the side of the guide plate 13 near the end of the upper chord 11.
[0059] The mating part is an elastic groove 74 set on the side wall of the male connector 7. The elastic groove 74 corresponds to the elastic limiting strip 16. When the male connector 7 is inserted into the guide plate 13, the elastic limiting strip 16 gradually moves to the central axis of the upper chord group 1 under the squeezing action of the inner wall of the elastic groove 74. At the same time, the elastic limiting strip 16 exerts a reverse squeezing force on the male connector 7 to ensure that the male connector 7 is clamped and fixed on the guide plate 13.
[0060] Example 4: This example is identical to Example 2 except for the specific forms of the limiting component and the mating component.
[0061] Reference Figure 7 In this embodiment, the limiting member is an elastic plunger 17 fixed to the inner sidewall of the guide plate 13. The elastic plunger 17 includes a plunger housing, a plunger spring, and a plunger ball head. The length direction of the plunger housing is perpendicular to the length direction of the guide plate 13. One end of the plunger spring is fixed to the inner bottom wall of the plunger housing, and the other end is fixedly connected to the plunger ball head.
[0062] The mating component is a locking groove 75 located on the side wall of the male connector 7, which is compatible with the plunger ball head. When the male connector 7 is inserted into the guide plate 13 and abuts against the support plate 14, the plunger ball head and the locking groove 75 correspond to each other, and the plunger ball head automatically snaps into the locking groove 75, thereby achieving pre-fixation of the guide plate 13 and the male connector 7, ensuring the stability of the male connector 7, and facilitating subsequent welding operations between the male connector 7 and the upper chord rod 11 by construction personnel.
[0063] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A Bailey truss, comprising two sets of parallel upper and lower chord groups (2), a vertical member (3) connecting the two chord groups, an inclined member (4) inclined between the upper and lower chord groups (2), and a connecting pin (5), wherein the upper and lower chord groups (2) are respectively provided with a female connector (6) and a male connector (7), the female connector (6) comprising a female plate (61) respectively provided on the opposite two outer side walls of the chord group, the female plate (61) having a female hole (611) penetrating both end faces, characterized in that, The male connector (7) includes a male connector plate (71) respectively disposed on the two walls of the inner groove (12) of the chord assembly. The male connector plate (71) is provided with an extension (711) extending horizontally out of the outer side of the chord assembly. The extension (711) is provided with a male connector hole (712) corresponding to the female connector hole (611).
2. A Bailey panel truss according to claim 1, characterized in that, The length of the extension (711) is equal to the distance from the end of the upper and lower chord assembly (2) to the vertical rod (3).
3. A Bailey panel truss according to claim 1, characterized in that, The extension (711) has a guide slope (713) on the side away from the upper and lower chord assembly (2).
4. A Bailey panel truss according to claim 1, characterized in that, The male connector (7) and female connector (6) are provided with reinforcing grooves (62) on their end faces facing the center of the upper and lower chord groups (2). The reinforcing grooves (62) are U-shaped in the vertical direction and in the length direction of the chord group.
5. A Bailey panel truss according to claim 1, characterized in that, The bottom sides of the upper and lower chord groups (2) are provided with guide plates (13) for guiding the insertion of the male connector (7), and the guide plates (13) are respectively provided on the opposite sides of the vertical rod (3).
6. A Bailey panel truss according to claim 1, characterized in that, The inner groove (12) of the upper and lower chord assembly (2) is also provided with a support plate (14) for the end of the male connector (7) to abut.
7. A Bailey panel truss according to claim 5, characterized in that, The guide plate (13) is provided with a limiting member for restricting the male connector (7) from coming out. The side wall of the male connector (7) has a mating member that is adapted to the limiting member. The limiting member and the mating member are used to achieve the pre-fixation of the male connector (7) on the guide plate (13).
8. A Bailey truss according to claim 7, characterized in that, The limiting component is a limiting tooth surface (15), which is arranged along the length direction of the guide plate (13). The male connector (7) has a limiting groove (72) corresponding to the limiting tooth surface (15). The mating component is a limiting ratchet (73) rotatably mounted on the limiting groove (72) and a limiting spring (731) connecting the limiting ratchet (73).
9. A Bailey panel truss according to claim 7, characterized in that, The limiting component is an elastic limiting strip (16), one end of which is fixed to the guide plate (13), and the other end gradually tilts towards the outside of the chord assembly. The mating component is an elastic groove (74) provided on the side wall of the male connector (7) and mating with the elastic limiting strip (16).
10. A Bailey truss according to claim 7, characterized in that, The limiting member is an elastic plunger (17) fixed to the guide plate (13), and the side wall of the male connector (7) has a locking groove (75) for the plunger head of the elastic plunger (17) to be inserted.