Top chord turning tool

Abstract

The utility model discloses an upper chord turning-over tool which is used for turning over an upper chord, the upper chord comprises a box body, a top plate and two U-shaped ribs, the two U-shaped ribs are arranged on the top plate and located on the two sides of the box body, the upper chord turning-over tool comprises a first lifting lug and a second lifting lug, the first lifting lug is welded to a panel of the box body, and the second lifting lug is welded to a panel of the box body. And the second lifting lug is detachably connected with one of the two U-shaped ribs. The first lifting lug is welded to the panel of the box body, the second lifting lug is detachably connected with one of the two U-shaped ribs, the first lifting lug plays a main bearing role, and the second lifting lug assists in turning over, so that the number of welded lifting lugs can be reduced, and the workload of cutting off the lifting lugs, cutting, grinding and supplementary coating in the later period is reduced.

Description

Technical Field

[0001] The present application belongs to the technical field of tooling equipment, and in particular relates to a top chord turning tool. Background Art

[0002] The bridge has a double-layer box girder structure, in which the sheet girder is divided into an upper chord, a lower chord and a web. The upper chord needs to be turned over 90 degrees for horizontal assembly. The upper chord adopts a box-shaped section, the total height of the chord is about 3.5m, the two U ribs of the top plate extend outside the box, the total width is about 2.7m, the length of the upper chord unit ranges from 7.6-18.8m, and the weight ranges from 16.2t to 38t. Due to the extension of the U rib of the upper chord, it cannot be turned over by rolling.

[0003] In the prior art, the turning tooling of the upper chord generally welds ears on the panel and the web for turning. The ears need to be cut off after turning, but welding and removing the ears will damage the parent material. At the same time, after cutting the ears, grinding and repainting are required, which increases the workload. Utility Model Content

[0004] In order to solve the technical problems in the prior art that welding and removal of the lifting lugs will cause damage to the base material, and that cutting the lifting lugs requires grinding and repainting, which increases the workload, the present application provides a chord turning tool.

[0005] The present application provides an upper chord turning tool for turning the upper chord, wherein the upper chord comprises a box body, a top plate and two U-shaped ribs, wherein the two U-shaped ribs are arranged on the top plate and located on both sides of the box body, and the upper chord turning tool comprises a first lifting ear and a second lifting ear, wherein the first lifting ear is welded to the panel of the box body, and the second lifting ear is detachably connected to one of the two U-shaped ribs.

[0006] In some optional embodiments, the second lifting ear includes a lifting ear body, a pad and two connecting plates, the lifting ear body is perpendicular to the pad, the lifting ear body and the connecting plates are respectively connected to two sides of the pad, the two connecting plates and the pad form a recessed portion, the recessed portion is sleeved on the U-shaped rib, and the two connecting plates are respectively detachably connected to the two side plates of the U-shaped rib.

[0007] In some optional embodiments, the second lifting ear further includes two clamping plates, the clamping plates and the connecting plates are respectively clamped on two sides of the side plate, and the clamping plates and the connecting plates are both detachably connected to the side plate.

[0008] In some optional embodiments, a plurality of mounting holes are provided on the side plate of the U-shaped rib, a plurality of first connecting holes are provided on the connecting plate, a plurality of second connecting holes are provided on the clamping plate, and the second lifting ear also includes a plurality of connecting bolts and connecting nuts, and the connecting bolts pass through the first connecting hole, the mounting hole, and the second connecting hole and are connected to the connecting nuts.

[0009] In some optional embodiments, the connecting bolts are high-strength bolts.

[0010] In some optional embodiments, the second lifting ear further includes two first ribs connected to the pad, and the two first ribs are respectively connected to two sides of the lifting ear body along the width direction.

[0011] In some optional embodiments, the two first ribs and the lifting ear body form an I-shaped structure.

[0012] In some optional embodiments, the width direction of the lifting ear body is parallel to a line connecting the midpoints of the two side plates of the U-shaped rib.

[0013] In some optional embodiments, the second lifting ear further includes at least two second ribs, and the second ribs are respectively connected to the connecting plate and the pad.

[0014] In some optional embodiments, the lifting ear body is made of Q370qD steel plate.

[0015] Compared with the prior art, the upper chord turning tool provided by the utility model has the following beneficial effects:

[0016] The first lifting ear is welded to the panel of the box body, and the second lifting ear is detachably connected to one of the two U-shaped ribs. The first lifting ear plays a major load-bearing role, and the second lifting ear assists in turning over, which can reduce the number of welded lifting ears and reduce the workload of cutting, grinding and repainting of the lifting ears in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of an upper chord turning tool in one or more embodiments of the utility model is shown;

[0018] Figure 2 A schematic diagram of the structure of the second lifting lug of the upper chord turning tool in one or more embodiments of the utility model in the main viewing angle is shown;

[0019] Figure 3 A schematic diagram of the structure of the second lifting ear of the upper chord turning tool in one or more embodiments of the utility model is shown in a top view;

[0020] Figure 4 A schematic structural diagram of a first rib plate of an upper chord turning tooling in one or more embodiments of the utility model is shown;

[0021] Figure 5 A schematic structural diagram of a second rib plate of an upper chord turning tool in one or more embodiments of the utility model is shown.

[0022] Explanation of the reference numerals: 100-upper chord, 110-box body, 120-top plate, 130-U-shaped rib, 131-side plate; 1-first lifting ear; 2-second lifting ear, 21-lifting ear body, 22-pad, 23-connecting plate, 231-first connecting hole, 24-clamp, 241-second connecting hole, 25-connecting bolt, 26-connecting nut, 27-first rib plate, 28-second rib plate. DETAILED DESCRIPTION

[0023] In order to make the technical personnel in the technical field to which the present application belongs to understand the present application more clearly, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0024] Please refer to Figure 1-Figure 5 As shown, an embodiment of the present application provides an upper chord turning tool for turning over an upper chord 100, wherein the upper chord 100 includes a box body 110, a top plate 120 and two U-shaped ribs 130, wherein the two U-shaped ribs 130 are arranged on the top plate 120 and are located on both sides of the box body 110, and the upper chord turning tool includes a first lifting ear 1 and a second lifting ear 2, wherein the first lifting ear 1 is welded to a panel of the box body 110, and the second lifting ear 2 is detachably connected to one of the two U-shaped ribs 130.

[0025] The upper chord turning tool proposed in the embodiment of the present application is welded to the panel of the box body 110 through the first lifting ear 1, and the second lifting ear 2 is detachably connected to one of the two U-shaped ribs 130. The first lifting ear 1 plays a major load-bearing role, and the second lifting ear 2 assists in turning, which can reduce the number of welded lifting ears and reduce the workload of cutting, grinding and repainting of the lifting ears in the later stage.

[0026] In some optional embodiments, the second lifting ear 2 includes a lifting ear body 21, a pad 22 and two connecting plates 23, the lifting ear body 21 is perpendicular to the pad 22, the lifting ear body 21 and the connecting plates 23 are respectively fixedly connected to the pad 22, and the fixed connection here can be fixed by welding, and the lifting ear body 21 and the connecting plates 23 are respectively located on both sides of the pad 22, and the two connecting plates 23 and the pad 22 form a concave portion, and the concave portion is sleeved on the U-shaped rib 130, and the two connecting plates 23 are respectively detachably connected to the two side plates 131 of the U-shaped rib 130. Through the detachable connection of the two connecting plates 23 and the two side plates 131 of the U-shaped rib 130, the detachable connection of the second lifting ear 2 and the U-shaped rib 130 is realized, which is convenient for the installation and removal of the second lifting ear 2, and the second lifting ear 2 does not need to be welded, thereby reducing the number of welded lifting ears and reducing the workload of cutting, grinding and repainting of the lifting ears in the later stage. The detachable connection in this embodiment can be bolted.

[0027] In some optional embodiments, the second lifting ear 2 further includes two clamping plates 24, and the clamping plates 24 and the connecting plates 23 are respectively clamped on both sides of the side plate 131, and the clamping plates 24 and the connecting plates 23 are both detachably connected to the side plate 131. By clamping the clamping plates 24 and the connecting plates 23 on both sides of the side plate 131, and then detachably connecting the clamping plates 24 and the connecting plates 23 to the side plate 131, it is possible to prevent the side plate 131 from being damaged due to excessive force locally, thereby improving the stability and reliability of the device.

[0028] In some optional embodiments, the side plate 131 of the U-shaped rib 130 is provided with a plurality of mounting holes, the connecting plate 23 is provided with a plurality of first connecting holes 231, the clamping plate 24 is provided with a plurality of second connecting holes 241, and the second lifting ear 2 further includes a plurality of connecting bolts 25 and connecting nuts 26, the connecting bolts 25 pass through the first connecting holes 231, the mounting holes and the second connecting holes 241 and are connected with the connecting nuts 26. The connecting bolts 25 pass through the first connecting holes 231, the mounting holes and the second connecting holes 241 and are connected with the connecting nuts 26, so that the connecting plate 23 and the clamping plate 24 are detachably connected to the side plate 131. In this embodiment, the number of the first connecting holes 231 of each connecting plate 23 and the number of the second connecting holes 241 of each clamping plate 24 are both 8, the 8 holes are arranged in two rows, each row has 4 holes, the total number of the connecting bolts 25 is 16, and the number of the connecting bolts 25 can be actually set according to the load requirement.

[0029] In some optional embodiments, the connecting bolts 25 are high-strength bolts. The connecting bolts 25 are 8.8-grade high-strength bolts. There are 16 connecting bolts 25, and the ultimate shear load of each connecting bolt 25 is about 8 tons, which meets the safety lifting requirements.

[0030] In some optional embodiments, the second lifting eye 2 further includes two first ribs 27 connected to the pad 22, and the two first ribs 27 are respectively connected to the two sides of the lifting eye body 21 along the width direction. By connecting the first ribs 27 to the two sides of the lifting eye body 21 along the width direction, the connection between the lifting eye body 21 and the pad 22 is strengthened, thereby improving the lifting capacity of the second lifting eye 2. The width direction of the lifting eye body 21 described above is parallel to the top surface of the pad 22.

[0031] In some optional embodiments, the two first ribs 27 form an "I"-shaped structure with the lifting ear body 21. The "I"-shaped structure can make the first ribs 27 at both ends and both sides of the lifting ear body 21 symmetrical, so that the force is more uniform, and a more stable structure is formed between the lifting ear body 21 and the first ribs 27, thereby improving the stability and reliability of the device.

[0032] In some optional embodiments, the width direction of the lifting ear body 21 is parallel to the line connecting the midpoints of the two side plates 131 of the U-shaped rib 130. By making the width direction of the lifting ear body 21 parallel to the line connecting the midpoints of the two side plates 131 of the U-shaped rib 130, when the lifting ear body 21 is subjected to force, the shear load is just applied to the two side plates 131, and the two side plates 131 of the U-shaped rib 130 can better bear the shear load, thereby improving the reliability and stability of the device.

[0033] In some optional embodiments, the second lifting ear 2 further includes at least two second ribs 28, and the second ribs 28 are respectively connected to the connecting plate 23 and the pad 22. The second ribs 28 are respectively connected to the connecting plate 23 and the pad 22 to strengthen the connection between the connecting plate 23 and the pad 22, so as to prevent the connecting plate 23 from being disconnected or pulled apart from the pad 22 during the load-bearing process, thereby improving the integrity of the device, improving the load-bearing capacity of the device, and thus improving reliability and stability.

[0034] In some optional embodiments, the lifting lug body 21 is made of Q370qD steel plate. Q370qD steel plate is a bridge plate with an allowable load of 70 tons. The remaining material of the bridge can be used to make the lifting lug body 21, which can improve the utilization rate of the remaining material and avoid waste while ensuring strength.

[0035] The working principle of the upper chord turning tooling proposed in the utility model is: the lifting ear body 21 and the connecting plate 23 are respectively fixedly connected to the pad 22, the lifting ear body 21 and the connecting plate 23 are respectively located on both sides of the pad 22, the two connecting plates 23 and the pad 22 form a recessed portion, the recessed portion is sleeved on the U-shaped rib 130, and is clamped on both sides of the side plate 131 by the clamping plate 24 and the connecting plate 23 respectively, and the connecting bolt 25 passes through the first connecting hole 231, the mounting hole and the second connecting hole 241 and is connected with the connecting nut 26 to realize the detachable connection between the connecting plate 23 and the clamping plate 24 and the side plate 131; the first lifting ear 1 plays a major load-bearing role, and the second lifting ear 2 assists in turning over, which can reduce the number of welded lifting ears and reduce the workload of cutting, grinding and repainting the lifting ears in the later stage.

[0036] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0037] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise" and "counterclockwise" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0038] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0040] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A top chord turning tool, used for turning the top chord, the top chord comprising a box body, a top plate and two U-shaped ribs, the two U-shaped ribs are arranged on the top plate and located on both sides of the box body, characterized in that: The upper chord turning tool comprises a first lifting ear and a second lifting ear, wherein the first lifting ear is welded to the panel of the box body, and the second lifting ear is detachably connected to one of the two U-shaped ribs.

2. The upper chord turning tool according to claim 1, characterized in that: The second lifting ear includes a lifting ear body, a pad and two connecting plates, the lifting ear body is perpendicular to the pad, the lifting ear body and the connecting plates are respectively connected to two sides of the pad, the two connecting plates and the pad form a recessed portion, the recessed portion is sleeved on the U-shaped rib, and the two connecting plates are respectively detachably connected to the two side plates of the U-shaped rib.

3. The upper chord turning tool according to claim 2, characterized in that: The second lifting ear also includes two clamping plates, the clamping plates and the connecting plates are clamped on both sides of the side plate respectively, and the clamping plates and the connecting plates are both detachably connected to the side plate.

4. The upper chord turning tool according to claim 3, characterized in that: A plurality of mounting holes are arranged on the side plate of the U-shaped rib, a plurality of first connecting holes are arranged on the connecting plate, a plurality of second connecting holes are arranged on the clamping plate, and the second lifting ear also includes a plurality of connecting bolts and connecting nuts, and the connecting bolts pass through the first connecting hole, the mounting hole and the second connecting hole and are connected to the connecting nuts.

5. The upper chord turning tool according to claim 4, characterized in that: The connecting bolts are high-strength bolts.

6. The upper chord turning tool according to claim 2, characterized in that: The second lifting ear further includes two first rib plates connected to the backing plate, and the two first rib plates are respectively connected to two sides of the lifting ear body along the width direction.

7. The upper chord turning tool according to claim 6, characterized in that: The two first ribs and the lifting ear body form an "I"-shaped structure.

8. The upper chord turning tool according to claim 7, characterized in that: The width direction of the lifting ear body is parallel to the line connecting the midpoints of the two side plates of the U-shaped rib.

9. The upper chord turning tool according to claim 2, characterized in that: The second lifting ear further includes at least two second ribs, and the second ribs are respectively connected to the connecting plate and the pad.

10. The upper chord turning tool according to any one of claims 2 to 9, characterized in that: The lifting ear body is made of Q370qD steel plate.

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