T-beam hoisting device and hoisting method

Abstract

Disclosed in the present invention are a T-beam hoisting device and hoisting method. The hoisting device comprises: a base for supporting a web of a T-beam, the base being provided with a groove lower than the bottom of the web; a web fixture comprising U-shaped rod members and clamping plates, wherein the middle of the pair of the U-shaped rod members is hingedly connected to the bottom of the groove by means of a scissor structure, and two ends of each U-shaped rod member are rotatably connected to the clamping plates; flange protective plates wrapped around two sides of a flange of the T-beam, wherein rope grooves are formed in the outer sides of the flange protective plates; and two steel wire ropes having the lower ends connected to the base, wherein the upper ends of the two steel wire ropes are suspended below a suspension beam. The present invention overcomes the problems of damages to corners of a T-beam, unstable hoisting during hoisting of the T-beam, and the like; a base is arranged, so that the stress uniformity of a web is improved; a web fixture is arranged to fix the base to the T-beam to prevent the T-beam from shaking; and flange protective plates are arranged to protect and limit a flange of the T-beam, so that stable hoisting of the T-beam is achieved, and the flange and the corners of the web can be protected to avoid damage to the T-beam.

Description

T-beam hoisting device and hoisting method TECHNICAL FIELD

[0001] The present application relates to the technical field of bridge engineering, in particular to a T-beam hoisting device and a hoisting method. BACKGROUND

[0002] T-beam hoisting is an important link in bridge construction. After the T-beam is transported from the prefabrication yard to the construction site, it is hoisted smoothly and placed slowly into the installation position during hoisting, which has high requirements for the performance of the hoisting equipment.

[0003] The commonly used method at present is to hoist the T-beam by using steel wire ropes to hold the bottom at both ends of the T-beam. However, since the T-beam has a large self-weight and the force exerted by the steel wire ropes on the T-beam has a small area, stress concentration in the hoisting process will cause damage to the corners of the beam ribs and flanges of the T-beam, affecting the strength of the T-beam. Therefore, it is necessary to set some structures for protecting the corners of the T-beam. Chinese Patent Publication No. CN218809837U, published on April 7, 2023, entitled "Corner protector for hoisting of prefabricated T-beam" discloses a device that can be used for hoisting of T-beams, which includes a flange plate corner protector, an elastic pad layer, a limiting device, and a falling device. When applied to the hoisting of T-beams, it can provide protection for the corners of the T-beam. However, the corner protector provided by this patent only has a certain protective effect on the corners, and the fixing effect on the T-beam is not good enough. It also hinders the setting of other structures for fixing the T-beam, and cannot guarantee the stability and safety of the hoisting process of the T-beam. SUMMARY

[0004] In order to overcome the problems of damage to the corners of the T-beam and unstable hoisting during the hoisting process of the T-beam, the present application provides a T-beam hoisting device and a hoisting method. By setting a base to increase the uniformity of the stress on the beam ribs, setting a beam rib clamp to fix the base and the T-beam, preventing the T-beam from shaking, and using a flange guard plate to protect and limit the flanges of the T-beam, the stable hoisting of the T-beam can be achieved, and the corners of the flanges and beam ribs can be protected to prevent damage.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following scheme:

[0006] The T-beam hoisting device comprises:

[0007] a base for supporting the beam ribs of the T-beam, the base being provided with a groove lower than the bottom of the beam ribs;

[0008] A beam rib clamp comprises U-shaped rods and clamping plates, a pair of the U-shaped rods are hinged in a scissors structure and the hinge shaft is fixed to the groove bottom, the two ends of each U-shaped rod are rotatably connected with a clamping plate, the inner side of the clamping plate is attached to the beam rib and the outer side is provided with a connecting block with a through hole, the connecting blocks of the two clamping plates on one side of the beam rib are connected by a threaded rod passing through the through holes and are fixed by matching nuts;

[0009] A flange guard comprises a pair of U-shaped plates wrapped on both sides of the flange of a T-beam, and a rope groove is formed on the outer side of the flange guard.

[0010] There are at least two steel wires, the lower ends of the two steel wires are respectively connected to the two sides of the base, and the steel wires are suspended under the lifting beam of the hoisting device after passing through the rope groove upward.

[0011] Preferably, a pair of limiting grooves are formed on the bottom of the base along the extension direction of the T-beam, a limiting rod is inserted into each limiting groove, and the two ends of the limiting rod are fixedly connected with the two ends of one of the steel wires.

[0012] Preferably, the groove on the base is a rectangular groove and extends through both sides of the base along the width direction of the T-beam.

[0013] Preferably, two rope grooves are formed on each flange guard, and the two rope grooves are converging upward and arranged in an eight-shaped manner.

[0014] Preferably, a detachable auxiliary plate is arranged on the outer side of the flange guard to cover the rope groove.

[0015] Preferably, a plate clamp is arranged on the outer side of the flange guard, and a plurality of plate clamps are arranged on the left, right and bottom sides of the auxiliary plate to limit and fix the auxiliary plate.

[0016] Preferably, the lifting beam is an adjustable lifting beam, a plurality of limiting columns are arranged on the main beam of the lifting beam at equal intervals, and the steel wires are suspended between the limiting columns on the main beam.

[0017] The application also provides a T-beam hoisting method using the T-beam hoisting device provided in any of the above solutions, and the method comprises the following steps:

[0018] S1: placing the base on the beam rib bottom of the T-beam, rotating the U-shaped rods of the beam rib clamp and adjusting the angle of the clamping plates, so that each clamping plate is attached to the side surface of the beam rib, and the threaded rods are passed through the through holes in the connecting blocks of the two clamping plates on the two sides of the beam rib and are locked and fixed by nuts;

[0019] S2: Wrap the flange guard on both sides of the T-beam, pull the steel wire rope connected to the base up through the rope groove of the flange guard, then hang the steel wire rope to the hoisting beam and adjust the hanging point to the balance position;

[0020] S3: After the T-beam hoisting device is set at both ends of the T-beam in the same way, the T-beam is hoisted and moved to the installation position by the hoisting device, and the steel wire rope, flange guard and base are removed after the T-beam is installed.

[0021] The present application at least includes the following beneficial effects: (1) The base is used to support the T-beam, avoiding stress concentration of the beam rib, and the flange guard is used to protect the flange corner, which can prevent the T-beam corner from being damaged during hoisting; (2) The beam rib clamp is used to fix the T-beam and the base, preventing the T-beam from shaking on the base, ensuring the stability and construction safety of the T-beam during hoisting, and the spacing between the clamping plates of the beam rib clamp is adjustable, which can adapt to different sizes of beam ribs; (3) The rope groove is arranged on the flange guard to gather the steel wire rope upwards, so that the steel wire rope and the flange guard have better matching degree, and the angle of the gathered steel wire rope suspended under the hoisting beam is closer to vertical, which can reduce the shaking degree of the steel wire rope under the hoisting beam; (4) The lower end of the steel wire rope can be connected to the limiting rod clamped under the base, the device can be quickly installed and removed, and the work efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Fig. 1 is a front structure schematic diagram of the present application;

[0023] Fig. 2 is a side structure schematic diagram of the present application;

[0024] Fig. 3 is a base structure top view of the present application;

[0025] Fig. 4 is a base structure bottom view of the present application;

[0026] Fig. 5 is a flange guard structure schematic diagram of the present application.

[0027] In the figure: base 1, T-beam 2, groove 3, U-shaped rod 4, clamping plate 5, connecting block 6, threaded rod 7, flange guard 8, rope groove 9, steel wire rope 10, hoisting beam 11, limiting rod 12, auxiliary plate 13, plate clamp 14. DETAILED DESCRIPTION

[0028] The present application will be further described in detail below with reference to the accompanying drawings, so that those skilled in the art can implement it according to the description.

[0029] It should be understood that the terms such as "have", "contain" and "include" used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0030] It should be noted that the experimental methods described in the following embodiments are conventional methods, and the materials described are commercially available unless otherwise specified. In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connecting", "arranging" should be interpreted broadly, for example, they can be fixedly connected, arranged, or detachably connected, arranged, or integrally connected, arranged. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances. The orientations or positional relationships indicated by the terms "transverse", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only intended to facilitate the description of the present application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0031] As shown in FIGS. 1-5, the T-beam hoisting device provided by the present application comprises:

[0032] a base 1 for supporting the beam rib of a T-beam 2, the base 1 being provided with a groove 3 lower than the bottom of the beam rib;

[0033] a beam rib clamp comprising a U-shaped rod 4 and a clamping plate 5, a pair of the U-shaped rods 4 being hingedly connected in a scissors structure and the hinging shaft being fixed to the bottom of the groove 3, each end of each of the U-shaped rods 4 being rotatably connected to a clamping plate 5, the inner side of the clamping plate 5 being attached to the beam rib and the outer side being provided with a connecting block 6 with a through hole, the connecting blocks 6 of the two clamping plates 5 on one side of the beam rib being connected by a threaded rod 7 passing through the through holes and being fixed by matching nuts;

[0034] a flange guard plate 8, which is a pair of U-shaped plates wrapped around the two sides of the flange of the T-beam 2, the outer side of the flange guard plate 8 being provided with a rope groove 9;

[0035] at least two steel wire ropes 10, the lower ends of the two steel wire ropes 10 being connected to the two sides of the base 1, the steel wire ropes 10 being suspended under a hoisting beam 11 of a hoisting device after passing through the rope grooves 9 upward.

[0036] The base 1 can be in the shape of a cuboid, the groove 3 is arranged at the middle position of the upper side of the base 1 and can provide sufficient space for the adjustment of the beam rib clamp, the beam rib of the T-beam 2 is arranged on the upper side of the base 1 on both sides of the groove 3. A pair of U-shaped bars 4 are arranged in a scissors structure and the contact positions are respectively provided with shaft sleeves, the hinge shaft is vertically fixed at the center position of the bottom of the groove 3, and the two shaft sleeves are concentrically arranged on the hinge shaft; the two ends of each U-shaped bar 4 are vertical sections upwardly and are respectively arranged on both sides of the beam rib, the ends of the four vertical sections are at the same height, the end of each vertical section is hingedly connected with a clamping plate 5, the hinge position can be the side edge, side surface or bottom surface of the clamping plate 5, the clamping plate 5 is in a vertical state and can rotate in the horizontal direction to be attached to the beam rib, and the rotation of the clamping plate 5 can adapt to the beam rib with a larger width range, the through hole of the connecting block 6 on the clamping plate 5 is in the length direction of the T-beam 2 when it is attached to the beam rib, the threaded rod 7 passes through the through holes of the two connecting blocks 6 and is fixed by a nut, the threaded rod 7 and the horizontal sections of the two U-shaped bars 4 indirectly form a stable triangular structure, the clamping plate 5 is kept attached to the beam rib, and the threaded rod 7 only needs to keep the distance of the clamping plate 5, so the nut only needs to be arranged on the threaded rod 7 at the positions on the opposite sides of the two connecting blocks 6 to meet the fixing requirement, the clamping plate 5 clamps the beam rib from both sides to fix the T-beam 2 on the base 1.

[0037] The flange guard plate 8 is a U-shaped plate, which is buckled on both sides of the flange when installed to include the flange in the concave space, the distance between the upper and lower plates of the flange guard plate 8 can be selected according to the size of the flange of the T-beam 2, as shown in FIG. 5, the rope groove 9 on the outer side of the flange guard plate 8 is through from top to bottom and the depth of the rope groove 9 is sufficient to accommodate the steel wire rope 10, the steel wire rope 10 is positioned in the rope groove 9, and at the same time, the steel wire rope 10 also tightly attaches the flange guard plate 8 to the flange, the flange guard plate 8 prevents the steel wire rope 10 from directly contacting the flange of the T-beam 2 to cause corner damage, and can also play a role in fixing and centralizing the flange. One steel wire rope 10 is connected to each side of the base 1, the two ends of the steel wire rope 10 are connected to the base 1, and the middle position of the steel wire rope 10 is arranged on the hoisting beam 11, the steel wire rope 10 can be connected by arranging a pull ring or a hook on the base 1, or other connection methods with sufficient connection strength can be used, and the two steel wire ropes 10 are equal in length to make the base 1 reach a state of horizontal balance.

[0038] In the use of the device for T beam 2 hoisting, the two ends of the T beam 2 are pre-erected on the beam trolley or base, the base 1 is placed at the bottom of the beam rib of the T beam 2, the U-shaped rod 4 of the beam rib clamp is turned to clamp the beam rib, the angle of the clamping plate 5 is adjusted during the process to make the inner side face the beam rib, until each clamping plate 5 is attached to the side of the beam rib, the threaded rod 7 is used to pass through the through hole on the connecting block 6 of the two clamping plates 5 on both sides of the beam rib, and the threaded rod 7 is locked and fixed with the through hole without relative sliding; the flange guard plate 8 is wrapped around the two sides of the T beam 2, the steel wire rope 10 connected to the base 1 is pulled up and passes through the rope groove 9 of the flange guard plate 8, then the steel wire rope 10 is hung on the beam 11 and the hanging point is adjusted to the position of the device balance, and some structures can be arranged at the hanging point to limit the sliding displacement of the steel wire rope 10; after the T beam hoisting device is arranged at both ends of the T beam 2 in the same way, the T beam 2 is lifted and slowly moved to the installation position by the lifting device, and after the T beam 2 is installed, the steel wire rope 10, the flange guard plate 8 and the base 1 are removed.

[0039] The device avoids the problem of stress concentration caused by direct contact of the steel wire rope 10 with the beam rib by using the base 1 to support the T beam 2, and protects the corner of the flange edge by using the flange guard plate 8, which can prevent the corner of the T beam 2 from being damaged during hoisting; the beam rib clamp is used to fix the T beam 2 and the base 1, which prevents the T beam 2 from shaking on the base 1, ensures the stability and positioning accuracy of the T beam 2 during hoisting, and makes the construction safer and more efficient, and the spacing of the clamping plate 5 of the beam rib clamp can be adjusted, so that the clamping plate 5 can clamp different sizes of beam ribs, and the angle of the clamping plate 5 is maintained by the threaded rod 7 to ensure that the clamping plate 5 does not come off.

[0040] In another technical solution, as shown in Figure 4, a pair of limiting grooves are provided on the bottom of the base 1 along the extension direction of the T beam 2, a limiting rod 12 is connected in the limiting groove, and the two ends of the limiting rod 12 are fixedly connected with the two ends of the steel wire rope 10. Openings are provided at both ends of the limiting groove for the steel wire rope 10 to pass through. The limiting groove is provided on the bottom of the base 1 and has an extension length close to the length of the base 1, so that the position of the steel wire rope 10 connected to the base 1 avoids the position of the groove 3 on the base 1, the steel wire rope 10 is directly wound on the limiting rod 12 and fixed with a rope buckle, or a rod sleeve is provided on the limiting rod 12 to connect the steel wire rope 10, the corresponding position in the limiting groove has a widened avoiding space and an opening is provided for the steel wire rope 10 to pass through the side of the base 1. When the steel wire rope 10 is pulled, the limiting rod 12 is upwardly clamped in the limiting groove to provide sufficient connection stability, and the limiting rod 12 and the steel wire rope 10 can be quickly installed and removed to improve the work efficiency.

[0041] As shown in FIG. 3, the groove 3 on the base 1 is a rectangular slot, and extends through both sides of the base 1 along the width direction of the T-beam 2. The structure of extending through both sides can provide sufficient space for the beam rib clamp to move, and facilitate the staff to observe and adjust the state of the clamp. The plane of the base 1 with the rectangular slot is in an arc shape, and the support surfaces at both ends can provide sufficient support for the T-beam 2.

[0042] The hanging beam 11 is an adjustable hanging beam 11, and a plurality of limiting columns are arranged at equal intervals on the main beam of the hanging beam 11. The steel wire rope 10 is suspended between the limiting columns on the main beam. When the device is used to hoist T-beams 2 with different flange widths, the steel wire rope can be placed at a suitable stress angle by adjusting the position of the limiting column where the steel wire rope 10 is located, so as to ensure that the device has high stability and reliability when hoisting T-beams 2 of different sizes.

[0043] In another technical solution, as shown in FIG. 5, each of the flange protection plates 8 is provided with two sections of the rope groove 9, and the two sections of the rope groove 9 are gathered upward and arranged in an eight-character shape. In order to ensure the stability of the support for the T-beam 2, the base 1 generally has a large length, and the connection position of the steel wire rope 10 on the base 1 also has a large span. By arranging the upward-gathered rope grooves 9 on the flange protection plate 8, the steel wire rope 10 and the flange protection plate 8 have better cooperation. The two sections of the rope groove 9 are symmetrically distributed and gathered upward. After passing through the rope groove 9, the distance between the two steel wire ropes 10 can be shortened to adapt to the width of the hanging beam 11. After the steel wire rope 10 is gathered, the downward angle of the steel wire rope 10 suspended under the hanging beam 11 is closer to vertical, which can reduce the shaking degree of the steel wire rope 10 under the hanging beam 11.

[0044] As shown in FIGS. 1 and 2, the outer side of the flange protection plate 8 is provided with a detachable auxiliary plate 13 for covering the rope groove 9. The auxiliary plate 13 is attached to the outer side of the flange protection plate 8, and the two can be connected by a clamping groove buckle, bolt connection or hinge cooperation buckle, etc. In the process of assembling the device before hoisting, the steel wire rope 10 is in a relaxed state. The auxiliary plate 13 is used to limit the steel wire rope 10 in the rope groove 9, so as to prevent the steel wire rope 10 from falling off and improve the installation efficiency. When hoisting the T-beam 2, the auxiliary plate 13 can also prevent the steel wire rope 10 from accidentally coming off.

[0045] The outer side of the flange protection plate 8 is provided with a plate clamp 14, and a plurality of plate clamps 14 are respectively arranged on the left, right and lower three sides of the auxiliary plate 13 to limit and fix the auxiliary plate 13. The clamping space of the plate clamp 14 is matched with the thickness of the auxiliary plate 13. The auxiliary plate 13 is inserted from the top for fixation. One plate clamp 14 is arranged on the left and right two sides of the auxiliary plate 13 respectively to limit and support. One plate clamp 14 is arranged on the lower two ends respectively to support. The auxiliary plate 13 is very convenient to insert or extract from the top.

[0046] The application also provides a T-beam hoisting method using the T-beam hoisting device provided in any of the above solutions. The method comprises the following steps:

[0047] S1: Place the base 1 at the bottom of the beam rib of the T-beam 2, rotate the U-shaped rod 4 of the beam rib clamp and adjust the angle of the clamping plate 5, so that each clamping plate 5 is attached to the side of the beam rib, and the threaded rod 7 is connected to the through hole on the connecting block 6 through the two clamping plates 5 on both sides of the beam rib, and is locked and fixed with a nut;

[0048] S2: Wrap the flange guard 8 around both sides of the T-beam 2, pull the steel wire rope 10 connected to the base 1 up and through the rope groove 9 of the flange guard 8, then hang the steel wire rope 10 on the beam 11 and adjust the hanging point to the balance position;

[0049] S3: After the T-beam 2 hoisting device is set up at both ends of the T-beam 2 in the same way, the T-beam 2 is lifted and moved to the installation position by the lifting device, and the steel wire rope 10, flange guard 8 and base 1 are removed after the T-beam 2 is installed.

[0050] This method uses the base 1 with beam rib clamps to support the T-beam 2, avoiding the problem of stress concentration at the corners caused by direct contact of the beam rib with the steel wire rope 10, and using the flange guard 8 to protect the corners of the flange, which can prevent the corners of the beam rib and flange of the T-beam 2 from being damaged during hoisting; by using the beam rib clamp to fix the T-beam 2 to the base 1, the T-beam 2 is prevented from shaking on the base 1, ensuring the stability and positioning accuracy of the T-beam 2 during hoisting, making the construction safer and more efficient, and the spacing of the clamping plates 5 of the beam rib clamp can be adjusted, so that the beam rib can be clamped by adjusting the U-shaped rod 4 and the clamping plate 5, and the angle is maintained by the threaded rod 7 to ensure that the clamping plate 5 does not come off, and this method can be applied to the hoisting of T-beams 2 of different sizes without the need to replace the clamp.

[0051] The number of devices and the scale of processing described herein are used to simplify the description of the present application. Applications, modifications and variations of the present application will be apparent to those skilled in the art.

[0052] Although the embodiments of the present application have been disclosed as above, they are not limited to the applications and embodiments listed in the specification, and can be fully applied to various fields suitable for the present application, and additional modifications can be easily realized by those skilled in the art, therefore the present application is not limited to specific details and the figures shown and described herein, without departing from the general concept defined by the claims and the equivalent scope.

Claims

1. A T-beam hoisting device, characterized by comprising: The device comprises: a base for supporting the beam rib of the T-beam, the base being provided with a groove lower than the bottom of the beam rib; a beam rib clamp comprising U-shaped rods and clamping plates, a pair of the U-shaped rods being hinged in a scissors structure and the hinge shaft being fixed to the bottom of the groove, each end of the U-shaped rod being rotatably connected to a clamping plate, the inner side of the clamping plate being attached to the beam rib and the outer side being provided with a connecting block with a through hole, the connecting blocks of the two clamping plates on one side of the beam rib being connected by a threaded rod passing through the through holes and being fixed by matching nuts; flange protection plates, each of which is a pair of U-shaped plates wrapped around the two sides of the flange of the T-beam, the outer side of the flange protection plate being provided with a rope groove; at least two steel wires, the lower ends of the two steel wires being connected to the two sides of the base respectively, the steel wires passing through the rope grooves upwards and being hung under the hoisting beam of the hoisting device.

2. The T-beam hoisting device according to claim 1, characterized in that, A pair of limiting grooves are provided on the bottom of the base along the extension direction of the T-beam, a limiting rod is inserted into each limiting groove, and the two ends of the limiting rod are fixedly connected to the two ends of one of the steel wires, and the limiting grooves are provided with openings for the steel wires to pass out.

3. The T-beam hoisting apparatus according to claim 1, wherein The groove on the base is a rectangular groove and extends through the two sides of the base along the width direction of the T-beam.

4. The T-beam hoisting apparatus according to claim 1, wherein Each of the flange protection plates is provided with two sections of the rope grooves, and the two sections of the rope grooves are gathered upwards and arranged in an eight-shaped manner.

5. The T-beam hoist device of claim 1, wherein, The outer side of the flange protection plate is provided with a detachable auxiliary plate for covering the rope grooves.

6. The T-beam hoisting apparatus according to claim 5, wherein The outer side of the flange protection plate is provided with a plate clamp, and a plurality of plate clamps are used to limit and fix the auxiliary plate from the left, right and bottom sides.

7. The T-beam hoist device of claim 1, wherein, The hoisting beam is an adjustable hoisting beam, and a plurality of limiting columns are arranged on the main beam of the hoisting beam at equal intervals, and the steel wires are hung between the limiting columns on the main beam.

8. A method of hoisting a T-beam, characterized in that The method comprises the following steps: S1: placing the base on the bottom of the beam rib of the T-beam, rotating the U-shaped rods of the beam rib clamp and adjusting the angle of the clamping plates, so that each clamping plate is attached to the side surface of the beam rib, and the threaded rods are passed through the through holes in the connecting blocks of the two clamping plates on the two sides of the beam rib and are locked and fixed by nuts; S2: wrapping the T-beam with the flange protection plates, pulling up the steel wires connected to the base, passing the steel wires through the rope grooves of the flange protection plates upwards, and then hanging the steel wires on the hoisting beam and adjusting the hanging points to the balance position; S3: in the same way, after the T-beam hoisting device is arranged at the two ends of the T-beam, the T-beam is lifted and moved to the installation position by the hoisting device, and after the T-beam is installed, the steel wires, the flange protection plates and the base are removed.

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