An adjustable hanger suitable for vertical unstable truss structure

Abstract

The present invention discloses an adjustable sling suitable for a vertical unstable truss-type structure, and relates to the technical field of bridge steel structure hoisting, including a rod fixing system and a lifting lug system, wherein the rod fixing system includes a frame and a locking rod, one side of the fixing system is open, and a limiting rod is provided on the opening of the fixing system, and the space formed by the frame and the limiting rod is used to place the oblique rod of the truss-type structure to be hoisted, and the locking rod passes through the limiting rod and the side of the frame facing the limiting rod; the lifting lug system includes a main lifting lug arranged above the frame for hoisting the truss-type structure to be hoisted and assisting the adjustable sling in dismantling, an upper lug plate arranged below the upper cross bar of the truss-type structure to be hoisted, and a lower lug plate arranged above the lower cross bar of the truss-type structure to be hoisted. The present invention can effectively ensure the normal hoisting of the truss-type structure to be hoisted.

Description

Technical Field

[0001] The invention relates to the technical field of bridge steel structure hoisting, and in particular to an adjustable hoist suitable for a vertical unstable truss-type structure. Background Art

[0002] In the field of engineering construction, steel structure bridge components are usually hoisted in whole segments or trusses. After hoisting, they are assembled with other steel structure bridge components to form a complete structure.

[0003] However, for some vertical truss-type structures, they cannot form a closed structure before being spliced ​​with adjacent components, that is, they are in an unstable state before being assembled with other components. Direct lifting can easily cause deformation of the rods and damage the truss-type structure, and in severe cases even have an adverse effect on the entire engineering structure. Summary of the invention

[0004] In view of the defects existing in the prior art, the object of the present invention is to provide an adjustable hoist suitable for a vertical unstable truss-type structure, which can effectively ensure the normal lifting of the truss-type structure to be hoisted.

[0005] In order to achieve the above purpose, the technical solution adopted by the present invention is, including:

[0006] A rod fixing system, the rod fixing system comprises a frame and a locking rod, one side of the fixing system is open, a limiting rod is provided on the opening of the fixing system, a space enclosed by the frame and the limiting rod is used to place the oblique rod of the truss-type structure to be hoisted, and the locking rod passes through the limiting rod and the side of the frame facing the limiting rod;

[0007] The lifting ear system includes a main lifting ear arranged above the frame for lifting the truss-piece structure to be lifted and assisting the adjustable lifting device in dismantling, an upper ear plate arranged below the upper cross bar of the truss-piece structure to be lifted and used to connect the adjustable lifting device with the upper cross bar of the truss-piece structure to be lifted, and a lower ear plate arranged above the lower cross bar of the truss-piece structure to be lifted and used to connect the adjustable lifting device with the lower cross bar of the truss-piece structure to be lifted.

[0008] Based on the above technical solution, the truss structure to be hoisted includes an upper cross bar and a lower cross bar, a vertical bar is connected between the upper cross bar and the lower cross bar, an inclined diagonal bar is provided on each side of the vertical bar, and the bottom of the diagonal bar is fixed at the connection between the vertical bar and the lower cross bar.

[0009] On the basis of the above technical solution, the top of the vertical rod is fixed to the middle of the upper cross bar, and the bottom of the vertical rod is fixed to the middle of the lower cross bar.

[0010] Based on the above technical solution, both ends of the limit rod are provided with pins, the pin at the top end of the limit rod is connected to the upper side of the frame, and the pin at the bottom end of the limit rod is connected to the lower side of the frame.

[0011] On the basis of the above technical solution, a cushion block is provided in the frame.

[0012] On the basis of the above technical solution, the locking rod includes high-precision rolled threaded steel bars and two tensioning shoulder poles. The high-precision rolled threaded steel bars pass through the limit rod and the side of the frame opposite to the limit rod. One end of the high-precision rolled threaded steel bars passes through the limit rod and extends out of the limit rod, and the other end passes through the side of the frame and extends out of the side of the frame. Among the two tensioning shoulder poles, one pair of tensioning shoulder poles is located on the part of the high-precision rolled threaded steel bars extending out of the limit rod, and the other pair of tensioning shoulder poles is located on the part of the high-precision rolled threaded steel bars extending out of the side of the frame.

[0013] On the basis of the above technical solution, it also includes an adjustable system located between the frame and the lower ear plate for adjusting the distance between the frame and the lower ear plate.

[0014] Based on the above technical solution, the adjustable system includes a suspension rod, a rod segment, a screw rod and a rod joint connected in sequence from top to bottom, the top end of the suspension rod is connected to the frame, and the bottom end of the rod joint is connected to the lower ear plate.

[0015] Compared with the prior art, the advantages of the present invention are: by combining with an unstable vertical truss-type structure to be hoisted, the upper cross bar, diagonal bar and lower cross bar of the truss-type structure to be hoisted are fixed, so that the truss-type structure to be hoisted forms a closed stable structure, preventing the truss-type structure to be hoisted from being deformed during hoisting and affecting its use, and effectively ensuring the normal lifting of the truss-type structure to be hoisted. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an adjustable hanger applicable to a vertical unstable truss-type structure in an embodiment of the present invention;

[0017] Figure 2 This is a schematic structural diagram of a truss-type structure to be hoisted in an embodiment of the present invention;

[0018] Figure 3 It is a schematic diagram of an adjustable lifting device installed on a truss structure to be lifted.

[0019] In the figure: 1-frame, 2-limit rod, 3-tension pole, 4-fine-rolled threaded steel bar, 5-spacer, 6-hanging rod, 7-rod segment, 8-screw rod, 9-rod joint, 10-main lifting ear, 11-upper ear plate, 12-lower ear plate, 13-upper cross bar, 14-lower cross bar, 15-diagonal rod, 16-vertical rod. DETAILED DESCRIPTION

[0020] The embodiment of the present invention provides an adjustable hoist suitable for a vertical unstable truss-type structure, which can be combined with an unstable vertical truss-type structure to be hoisted, so that the truss-type structure to be hoisted forms a closed stable structure, thereby preventing the truss-type structure to be hoisted from being deformed during hoisting and affecting its use. The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0021] See also Figure 1 As shown, an adjustable hanger suitable for a vertical unstable truss-type structure provided by an embodiment of the present invention includes a rod fixing system and a lifting ear system. The rod fixing system includes a frame 1 and a locking rod, one side of the fixing system is open, and a limit rod 2 is provided on the opening of the fixing system. The space enclosed by the frame 1 and the limit rod 2 is used to place the oblique rod 15 of the truss-type structure to be hoisted, and the locking rod passes through the limit rod 2 and the side of the frame 1 opposite to the limit rod 2. The lifting ear system includes a main lifting ear 10 arranged above the frame 1 for hoisting the truss-type structure to be hoisted and assisting the adjustable hanger in dismantling, an upper ear plate 11 arranged below the upper cross bar 13 of the truss-type structure to be hoisted and used to connect the adjustable hanger with the upper cross bar 13 of the truss-type structure to be hoisted, and a lower ear plate 12 arranged above the lower cross bar 14 of the truss-type structure to be hoisted and used to connect the adjustable hanger with the lower cross bar 14 of the truss-type structure to be hoisted.

[0022] See also Figure 2 As shown, the truss-type structure to be hoisted in the embodiment of the present invention comprises an upper cross bar 13 and a lower cross bar 14, a vertical bar 16 is connected between the upper cross bar 13 and the lower cross bar 14, and an inclined diagonal bar 15 is provided on each side of the vertical bar 16, and the bottom of the diagonal bar 15 is fixed to the connection between the vertical bar 16 and the lower cross bar 14. The adjustable hangers of the embodiment of the present invention need to be used together when in use, and the two adjustable hangers are respectively located on both sides of the truss-type structure to be hoisted, one of which locks the upper cross bar 13, the diagonal bar 15 and the lower cross bar 14 on one side of the truss-type structure to be hoisted, and the other adjustable hanger locks the upper cross bar 13, the diagonal bar 15 and the lower cross bar 14 on the other side of the truss-type structure to be hoisted, so that the truss-type structure to be hoisted becomes a closed and stable structure to avoid deformation during the hoisting process.

[0023] In the embodiment of the present invention, the top of the vertical rod 16 is fixed to the middle of the upper crossbar 13, and the bottom of the vertical rod 16 is fixed to the middle of the lower crossbar 14. Pins are provided at both ends of the limit rod 2. The pin at the top of the limit rod 2 is connected to the upper side of the frame 1, and the pin at the bottom of the limit rod 2 is connected to the lower side of the frame 1. A cushion block 5 is provided in the frame 1. The locking rod comprises a fine-rolled threaded steel bar 4 and two tensioning poles 3. The fine-rolled threaded steel bar 4 passes through the limit rod 2 and the side of the frame 1 facing the limit rod 2. One end of the fine-rolled threaded steel bar 4 passes through the limit rod 2 and extends out of the limit rod 2, and the other end passes through the side of the frame 1 and extends out of the side of the frame 1. Among the two tensioning poles 3, one pair of tensioning poles 3 is located on the portion of the fine-rolled threaded steel bar 4 extending out of the limit rod 2, and the other pair of tensioning poles 3 is located on the portion of the fine-rolled threaded steel bar 4 extending out of the side of the frame 1.

[0024] The adjustable hanger of the embodiment of the present invention also includes an adjustable system located between the frame 1 and the lower ear plate 12 for adjusting the distance between the frame 1 and the lower ear plate 12. The adjustable system includes a hanger rod 6, a rod segment 7, a screw rod 8 and a rod joint 9 connected in sequence from top to bottom. The top end of the hanger rod 6 is connected to the frame 1, and the bottom end of the rod joint 9 is connected to the lower ear plate 12. The distance between the rod segment 7 and the rod joint 9 is fine-tuned by rotating the screw rod 8 to adjust the length of the adjustable hanger to adapt to the distance between the upper cross bar 13 and the lower cross bar 14. The main lifting lug 10 is welded to the frame 1 and is used for the lifting of the truss and the subsequent auxiliary removal of the hanger. The upper ear plate 11 is used to connect the upper cross bar 13 with the adjustable hanger of the present invention, and the lower ear plate 12 is used to connect the lower cross bar 14 with the adjustable hanger of the present invention. By adjusting the number of rod segments 7 and the length of the screw rod 8, the total length of the hanger can be adjusted to adapt to the structural dimensions of trusses of different heights.

[0025] The following combination Figure 3 The use process of the adjustable hanger according to the embodiment of the present invention is described.

[0026] For the installation of the adjustable hanger on one side of the truss-type structure to be hoisted, first weld the upper ear plate 11 under the upper cross bar 13 on this side, weld the lower ear plate 12 on the lower cross bar 14, then place the diagonal bar 15 on this side in the frame 1, install the limit rod 2, put on the pin, plug the spacer 5 between the diagonal bar 15 and the frame 1, then install the tension shoulder pole 3, and tighten the tension shoulder pole 3 through the fine-rolled threaded steel bar 4, and then use the pin to connect the upper ear plate 11 and the frame 1, so as to fix the truss to be hoisted. The upper cross bar 13 and the diagonal bar 15 of the truss structure are then adjusted according to the height of the truss structure to be hoisted. The spacing between the rod segments 7 and the rod joints 9 is fine-tuned by rotating the screw rod 8. The lower ear plate 12 is then connected to the rod joints 9 to fix the lower cross bar 14 of the truss structure to be hoisted. The installation of the adjustable hanger on the other side of the truss structure to be hoisted is the same as the above installation process, so as to achieve the fixation of the unstable truss structure to be hoisted and facilitate hoisting.

[0027] The adjustable hoist suitable for the vertical unstable truss-piece structure of the embodiment of the present invention is combined with the unstable vertical truss-piece structure to be hoisted, so as to fix the upper cross bar 13, the inclined bar 15 and the lower cross bar 14 of the truss-piece structure to be hoisted, so that the truss-piece structure to be hoisted forms a closed stable structure, prevents the truss-piece structure to be hoisted from being deformed during hoisting and affecting its use, and effectively ensures the normal lifting of the truss-piece structure to be hoisted.

[0028] The present invention is not limited to the above-mentioned embodiments. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

Claims

1. An adjustable hanger suitable for a vertical unstable truss structure, characterized in that: include: A rod fixing system, the rod fixing system comprising a frame (1) and a locking rod, one side of the fixing system is open, a limiting rod (2) is provided on the opening of the fixing system, a space enclosed by the frame (1) and the limiting rod (2) is used to place an inclined rod (15) of a truss-type structure to be hoisted, and the locking rod passes through the limiting rod (2) and the frame (1) and is opposite to the side of the limiting rod (2); A lifting lug system, the lifting lug system comprising a main lifting lug (10) arranged above the frame (1) for lifting the truss-piece structure to be lifted and assisting the adjustable lifting device in dismantling, an upper lug plate (11) arranged below the upper crossbar (13) of the truss-piece structure to be lifted and for connecting the adjustable lifting device to the upper crossbar (13) of the truss-piece structure to be lifted, and a lower lug plate (12) arranged above the lower crossbar (14) of the truss-piece structure to be lifted and for connecting the adjustable lifting device to the lower crossbar (14) of the truss-piece structure to be lifted; The truss-type structure to be hoisted comprises an upper crossbar (13) and a lower crossbar (14); a vertical bar (16) is connected between the upper crossbar (13) and the lower crossbar (14); an inclined diagonal bar (15) is provided on each side of the vertical bar (16); and the bottom of the diagonal bar (15) is fixed to the connection between the vertical bar (16) and the lower crossbar (14); The locking rod comprises a finely rolled threaded steel bar (4) and two tensioning poles (3), wherein the finely rolled threaded steel bar (4) passes through the limit rod (2) and the side of the frame (1) facing the limit rod (2), one end of the finely rolled threaded steel bar (4) passes through the limit rod (2) and extends outward from the limit rod (2), and the other end passes through the side of the frame (1) and extends outward from the side of the frame (1), and among the two tensioning poles (3), one pair of tensioning poles (3) is located on the portion of the finely rolled threaded steel bar (4) extending outward from the limit rod (2), and the other pair of tensioning poles (3) is located on the portion of the finely rolled threaded steel bar (4) extending outward from the side of the frame (1); It also includes an adjustable system located between the frame (1) and the lower ear plate (12) for adjusting the distance between the frame (1) and the lower ear plate (12); The adjustable system comprises a suspension rod (6), a rod segment (7), a screw rod (8) and a rod joint (9) connected in sequence from top to bottom, the top end of the suspension rod (6) is connected to the frame (1), and the bottom end of the rod joint (9) is connected to the lower ear plate (12).

2. An adjustable hanger suitable for a vertical unstable truss structure according to claim 1, characterized in that: The top of the vertical rod (16) is fixed to the middle of the upper cross rod (13), and the bottom of the vertical rod (16) is fixed to the middle of the lower cross rod (14).

3. The adjustable hanger for a vertical unstable truss structure according to claim 1, characterized in that: Pins are provided at both ends of the limit rod (2); the pin at the top end of the limit rod (2) is connected to the upper side of the frame (1); and the pin at the bottom end of the limit rod (2) is connected to the lower side of the frame (1).

4. The adjustable hanger for a vertical unstable truss structure according to claim 1, characterized in that: A cushion block (5) is provided inside the frame (1).

Images