Assembly type bridge bearing truss easy to disassemble and assemble

Abstract

The utility model discloses an assembly type bridge bearing truss easy to disassemble and assemble, which belongs to the technical field of bridge trusses and comprises lower chords and upper chords, the lower chords are arranged on two sides of a bridge in parallel, the upper chords are horizontally arranged at the tops of the lower chords, sliding sleeves are arranged on the upper chords in a sliding mode, and second cross rods are fixed between the sliding sleeves at the opposite positions of the two upper chords. Insertion locking mechanisms are arranged between the sliding sleeves and the upper chord, V-shaped inclined rods are fixed to the bottom ends of the sliding sleeves, and reinforcing mechanisms are arranged between the bottom ends of the V-shaped inclined rods and the lower chord. The upper chords on the two sides of a bridge can be supported at the same time through the bearing piece composed of the sliding sleeve, the second transverse rod and the V-shaped inclined rod, the positions of the bearing piece and the upper chords can be rapidly fixed through an insertion locking mechanism composed of the T-shaped insertion rod, the first positioning hole and the second positioning hole, and the bearing piece is more convenient and rapid to install.

Description

Technical Field

[0001] This utility model relates to a prefabricated bridge load-bearing truss, and more particularly to a prefabricated bridge load-bearing truss that is easy to assemble and disassemble, belonging to the field of bridge truss technology. Background Technology

[0002] Currently, in the installation of bridge trusses, high-strength bolts are used to fix the chords, web members, and supports. Although this provides high stability, it takes a long time to assemble and disassemble. If a prefabricated bridge load-bearing truss with easy assembly and disassembly is used, as disclosed in patent CN213867294U, although it can be quickly assembled by plugging in the chords, it can only plug in the upper and lower chords. It cannot quickly assemble the chords on both sides of the bridge. In addition, the load-bearing components composed of adjacent chords are separate and cannot form a connection, which affects the stability of the support.

[0003] To address these issues, a modular bridge load-bearing truss that is easy to assemble and disassemble was designed. Summary of the Invention

[0004] The main purpose of this utility model is to provide a prefabricated bridge load-bearing truss that is easy to assemble and disassemble, so as to solve the problems mentioned in the background art.

[0005] The objective of this utility model can be achieved by adopting the following technical solution:

[0006] A prefabricated bridge load-bearing truss that is easy to assemble and disassemble includes a lower chord and an upper chord. The lower chords are arranged parallel to each other on both sides of the bridge. The upper chords are horizontally arranged at the top of each lower chord. Sliding sleeves are slidably arranged on each upper chord. A second crossbar is fixed between the sliding sleeves at opposite points of the two sets of upper chords. A plug-in locking mechanism is provided between the sliding sleeves and the upper chord.

[0007] The bottom of each sliding sleeve is fixed with a V-shaped inclined rod, and a reinforcement mechanism is provided between the bottom of the V-shaped inclined rod and the lower chord.

[0008] Preferably, a first crossbar is evenly fixed between the two sets of lower chords by bolts, and the first crossbars are parallel to each other.

[0009] Preferably, the insertion locking mechanism includes a T-shaped insert rod, a first positioning hole, and a second positioning hole. The top of the sliding sleeve has a first positioning hole, and the upper chord has evenly spaced second positioning holes that mate with the first positioning hole. The T-shaped insert rod is inserted into the interior of the first positioning hole and the second positioning hole.

[0010] Preferably, both ends of the T-shaped insert are fitted with screws, and both ends of the top of the sliding sleeve are provided with threaded holes.

[0011] Preferably, the reinforcement mechanism includes a base, a socket, a plug, a first through hole, a transverse bolt, and a second through hole. The base is fixed to the top of the lower chord. The top of the base has a socket. The bottom of the V-shaped diagonal bar is fixed with a plug. The plug is inserted into the socket. The two ends of the base have first through holes. The plug has a second through hole that matches the first through hole. The second through hole and the first through hole are connected to the transverse bolt.

[0012] Preferably, longitudinal bolts are installed on the side of the base corresponding to the side of the plug, and the end of the plug fits into the end face of the plug hole.

[0013] Preferably, the insert is rectangular in shape, and both ends of the bottom of the insert have rounded chamfers.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model uses a load-bearing component consisting of a sliding sleeve, a second crossbar, and a V-shaped diagonal bar to simultaneously support the upper chord on both sides of the bridge. Furthermore, the insertion and locking mechanism consisting of a T-shaped plug, a first positioning hole, and a second positioning hole can quickly fix the load-bearing component to the upper chord, making the installation of the load-bearing component more convenient and faster.

[0016] 2. This utility model has a reinforcement mechanism consisting of a base, a socket, a first through hole, a transverse bolt, a longitudinal bolt, a plug, and a second through hole at the top of the lower chord. This mechanism can not only stably limit the bottom of the load-bearing component, but also connect adjacent load-bearing components, thereby improving the support stability during use. Attached Figure Description

[0017] Figure 1 This is the front view of the present invention;

[0018] Figure 2 This is a drawing of the load-bearing component of this utility model;

[0019] Figure 3 This is a diagram of the upper chord structure of this utility model;

[0020] Figure 4 This is a structural diagram of the top of the lower chord of this utility model.

[0021] In the diagram: 1. Lower chord; 101. First horizontal bar;

[0022] 2. Upper chord; 3. Sliding sleeve; 4. Second crossbar;

[0023] 5. Insertion locking mechanism; 501. T-shaped insertion rod; 502. First positioning hole; 503. Second positioning hole;

[0024] 6. V-shaped diagonal brace;

[0025] 7. Reinforcing mechanism; 701. Base; 702. Insertion hole; 703. Insertion block; 704. First through hole; 705. Horizontal bolt; 706. Second through hole; 707. Longitudinal bolt. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0027] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0028] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0030] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. Example 1

[0031] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this embodiment proposes a prefabricated bridge load-bearing truss that is easy to assemble and disassemble, including a lower chord 1 and an upper chord 2. The lower chord 1 is arranged parallel to both sides of the bridge, and the upper chord 2 is arranged horizontally on the top of the lower chord 1. Sliding sleeves 3 are slidably arranged on the upper chord 2.

[0032] The inner control of the sliding sleeve 3 has the same shape as the upper chord 2. The inner wall of the sliding sleeve 3 is provided with two longitudinal guide ridges, which cooperate with the longitudinal grooves on the surface of the upper chord 2 to form a ridge-groove guide structure, preventing the sliding sleeve 3 from rotating and ensuring accurate sliding direction.

[0033] A second crossbar 4 is fixed between the sliding sleeves 3 at opposite positions of the two sets of upper chords 2, and a plug-in locking mechanism 5 is provided between the sliding sleeves 3 and the upper chords 2.

[0034] The lower chord 1, upper chord 2, first crossbar 101, and second crossbar 4 are all made of Q355B low alloy high strength structural steel with a yield strength ≥355MPa, which meets the bridge load-bearing requirements.

[0035] The bottom of the sliding sleeve 3 is fixed with a V-shaped inclined rod 6, and a reinforcing mechanism 7 is provided between the bottom of the V-shaped inclined rod 6 and the lower chord 1.

[0036] The sliding sleeve 3, V-shaped diagonal bar 6, and reinforcing mechanism 7 are all made of Q235B carbon structural steel with hot-dip galvanized surface treatment to prevent rust.

[0037] During truss assembly, the lower chord 1 is first placed on both sides of the bridge for connection and fixation. Then, the load-bearing component consisting of the sliding sleeve 3, the second crossbar 4, and the V-shaped diagonal bar 6 is lifted. The two ends of the bottom of the V-shaped diagonal bar 6 are inserted into the interior of the reinforcement mechanism 7 for initial positioning. After the load-bearing component is inserted and positioned, the bottom end of the V-shaped diagonal bar 6 is fixed using the reinforcement mechanism 7. Then, the upper chord 2 is passed through the interior of the sliding sleeve 3. After the upper chord 2 passes through all the sliding sleeves 3, the upper chord 2 is fixed to the sliding sleeve 3 using the insertion locking mechanism 5. The truss assembly is then complete. Example 2

[0038] The solution in Example 1 will be further described below with reference to its specific working method.

[0039] like Figure 1 As shown, in a preferred embodiment, based on the above method, a first crossbar 101 is evenly fixed between the two sets of lower chords 1 by bolts. The first crossbars 101 are parallel to each other, and the bolts are M20 high-strength bolts. Each first crossbar 101 has two bolt holes at both ends. The first crossbars 101 are used to reinforce the lower chords 1 laterally to ensure the stability of the truss.

[0040] like Figure 1As shown, in a preferred embodiment, based on the above method, the insertion locking mechanism 5 further includes a T-shaped insertion rod 501, a first positioning hole 502 and a second positioning hole 503. The top of the sliding sleeve 3 is provided with the first positioning hole 502, and the first positioning hole 502 penetrates the top of the sliding sleeve 3. The hole axis is perpendicular to the axis of the upper chord 2. The upper chord 2 is provided with second positioning holes 503 that cooperate with the first positioning hole 502. The T-shaped insertion rod 501 is inserted into the interior of the first positioning hole 502 and the second positioning hole 503.

[0041] After passing the upper chord 2 through the inside of the sliding sleeve 3 and aligning the first positioning hole 502 with the second positioning hole 503, the T-shaped insert 501 is vertically inserted into the positioning hole to stabilize the position of the upper chord 2 and the sliding sleeve 3.

[0042] like Figure 1 As shown, in a preferred embodiment, based on the above method, screws are installed at both ends of the T-shaped plug 501, and threaded holes are opened at both ends of the top of the sliding sleeve 3. After the T-shaped plug 501 is inserted and installed, the screws are tightened to fix the position of the T-shaped plug 501.

[0043] like Figure 4 As shown, in a preferred embodiment, based on the above method, the reinforcement mechanism 7 further includes a base 701, an insertion hole 702, an insertion block 703, a first through hole 704, a transverse bolt 705, and a second through hole 706. The base 701 is fixed to the top of the lower chord 1, and the base 701 and the lower chord 1 are fixed by welding or M16 bolts. The top of the base 701 has an insertion hole 702, and the bottom of the V-shaped diagonal bar 6 is fixed with an insertion block 703. The insertion block 703 is inserted into the inside of the insertion hole 702. The two ends of the base 701 have first through holes 704, and the insertion block 703 has a second through hole 706 that cooperates with the first through hole 704. The second through hole 706 and the inside of the first through hole 704 are connected and installed with transverse bolts 705.

[0044] During the installation of the load-bearing components, the bottom end of the V-shaped diagonal bar 6 is aligned with the insertion hole 702, and then the insertion block 703 is vertically inserted, with the outer end face of the insertion block 703 fitting against the end face of the insertion hole 702. If two sets of insertion blocks 703 are inserted into a set of insertion holes 702 at the same time, the insertion blocks 703 fit against each other. After the insertion of the insertion blocks 703 is completed, the first through hole 704 and the second through hole 706 are aligned, and the transverse bolt 705 is passed through the inside of the first through hole 704 and the second through hole 706. The nut is tightened at the end of the transverse bolt 705 to fix the bottom end of the V-shaped diagonal bar 6. If two sets of insertion blocks 703 are inserted into a set of insertion holes 702 at the same time, the adjacent V-shaped diagonal bars 6 are connected together to form a stable connection relationship.

[0045] like Figure 4As shown, in a preferred embodiment, based on the above method, longitudinal bolts 707 are further installed on the side of the base 701 corresponding to the side of the insertion block 703. The end of the insertion block 703 is in contact with the end face of the insertion hole 702. The use of longitudinal bolts 707 can squeeze the side of the insertion block 703 and reinforce the position of the insertion block 703.

[0046] like Figure 2 As shown, in a preferred embodiment, based on the above method, the insert 703 is further rectangular in shape, with arc-shaped chamfers at both ends of the bottom of the insert 703. The dimensions of the insert 703 are 80mm long × 50mm wide × 120mm high, and the radius of the arc-shaped chamfers at both ends of the bottom is 10mm. The presence of the arc-shaped chamfers makes it easier to insert the insert 703. Example 3

[0047] The solutions in Embodiments 1 and 2 will be further described below with reference to their specific working methods.

[0048] During truss assembly, the lower chord 1 is first placed on both sides of the bridge. Then, the first crossbar 101 is used for transverse reinforcement between the lower chords 1 to ensure their stability. Next, the insert 703 at the bottom of the V-shaped diagonal bar 6 is vertically inserted into the insertion hole 702, with the outer end face of the insert 703 fitting against the end face of the insertion hole 702. If two sets of inserts 703 are inserted into one set of insertion holes 702 simultaneously, the inserts 703 will fit against each other. After the insertion of the inserts 703 is completed, the first through hole 704 and the second through hole 706 are aligned. The transverse bolt 705 is passed through the inside of the first through hole 704 and the second through hole 706, and the nut is tightened at the end of the transverse bolt 705 to fix the bottom of the V-shaped diagonal bar 6. When the insert blocks 703 are simultaneously inserted into a set of insertion holes 702, the adjacent V-shaped diagonal bars 6 are connected together to form a stable connection. After the load-bearing component is inserted and limited, the upper chord 2 is passed through the inside of the sliding sleeve 3. After aligning the first positioning hole 502 and the second positioning hole 503, the T-shaped insert rod 501 is vertically inserted into the positioning hole to stabilize the position of the upper chord 2 and the sliding sleeve 3. The truss assembly is complete. When disassembling, first unscrew the screws at both ends of the T-shaped insert rod 501, pull out the T-shaped insert rod 501 to unlock the sliding sleeve 3 from the upper chord 2, then unscrew the transverse bolt 705 and the longitudinal bolt 707, pull out the insert block 703 from the insertion hole 702, and finally remove the load-bearing component using a hoisting tool to achieve quick disassembly.

[0049] The above description is only a further embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed by the present utility model, based on the technical solution and concept of the present utility model, shall fall within the protection scope of the present utility model.

Claims

1. A prefabricated bridge load-bearing truss that is easy to assemble and disassemble, comprising a lower chord (1) and an upper chord (2), characterized in that: The lower chord (1) is set parallel to both sides of the bridge. The top of the lower chord (1) is set horizontally with the upper chord (2). The upper chord (2) is slidably set with the sliding sleeve (3). The two sets of upper chords (2) are fixed with the second crossbar (4) between the sliding sleeve (3) at opposite positions. The sliding sleeve (3) and the upper chord (2) are provided with a plug-in locking mechanism (5). The bottom of the sliding sleeve (3) is fixed with a V-shaped inclined rod (6), and a reinforcing mechanism (7) is provided between the bottom of the V-shaped inclined rod (6) and the lower chord (1).

2. The easily assembled and disassembled prefabricated bridge load-bearing truss according to claim 1, characterized in that: Two sets of lower chords (1) are evenly fixed with first crossbars (101) by bolts, and the first crossbars (101) are parallel to each other.

3. A prefabricated bridge load-bearing truss with easy assembly and disassembly according to claim 1, characterized in that: The insertion locking mechanism (5) includes a T-shaped plug (501), a first positioning hole (502) and a second positioning hole (503). The top of the sliding sleeve (3) is provided with the first positioning hole (502), and the upper chord (2) is provided with the second positioning hole (503) that cooperates with the first positioning hole (502). The T-shaped plug (501) is inserted into the first positioning hole (502) and the second positioning hole (503).

4. A prefabricated bridge load-bearing truss with easy assembly and disassembly according to claim 3, characterized in that: Both ends of the T-shaped insert (501) are fitted with screws, and both ends of the top of the sliding sleeve (3) are provided with threaded holes.

5. A prefabricated bridge load-bearing truss with easy assembly and disassembly according to claim 1, characterized in that: The reinforcing mechanism (7) includes a base (701), a socket (702), a plug (703), a first through hole (704), a transverse bolt (705), and a second through hole (706). The base (701) is fixed to the top of the lower chord (1). The top of the base (701) has a socket (702). The bottom of the V-shaped diagonal bar (6) is fixed with a plug (703). The plug (703) is inserted into the socket (702). The two ends of the base (701) have first through holes (704). The plug (703) has a second through hole (706) that matches the first through hole (704). The second through hole (706) and the first through hole (704) are connected and installed with transverse bolts (705).

6. A prefabricated bridge load-bearing truss with easy assembly and disassembly according to claim 5, characterized in that: Longitudinal bolts (707) are installed on the side of the base (701) at the position corresponding to the side of the plug (703), and the end of the plug (703) is in contact with the end face of the socket (702).

7. A prefabricated bridge load-bearing truss with easy assembly and disassembly according to claim 5, characterized in that: The insert (703) is rectangular in shape, and both ends of the bottom of the insert (703) are provided with arc-shaped chamfers.

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