Fabricated building steel beam hoisting device and construction method thereof

Abstract

The invention discloses an assembly type building steel beam hoisting device and a construction method thereof.The assembly type building steel beam hoisting device comprises a steel beam and a hoisting tool, the hoisting tool is connected with the steel beam through a suspension mechanism and serves as the upper side fixing end of the steel beam, the suspension mechanism comprises first limiting heads which are embedded in the two axial sides of the steel beam in a point division mode, and the gravity center of the steel beam is arranged between the two first limiting heads; a second limiting head embedded with a steel beam is arranged under the first limiting head, the second limiting head and the first limiting head are connected and fixed through a connecting plate, the side direction of the connecting plate is connected with a connecting assembly, and the connecting plate is used in cooperation with a vertical rod piece arranged on one side of the connecting plate so that the steel beam can stably ascend and descend in the arrangement direction of the vertical rod piece in the traction process in the vertical direction. The mode that the vertical rods limit the preset track is adopted for treatment, the limiting blocks are arranged on the outer sides of the additionally-arranged connecting plates, the vertically-through through grooves are formed in the limiting blocks, and position limitation of the vertical rods is matched, so that the lifting appliance can ascend and descend along the vertical rods all the time, and the shaking problem is avoided.

Description

Technical Field

[0001] The invention relates to the field of lifting tools, in particular to an assembled building steel beam lifting device and a construction method thereof. Background Art

[0002] At present, within the scope of safe operation of lifting operations, the angle allowed for the wire rope to be extended is relatively limited. According to the relevant provisions for the lifting of prefabricated structures in the Technical Standard for Prefabricated Concrete Buildings GB / T 51231-2016, the horizontal angle of wire rope lifting should not be greater than 60° and should not be less than 45°. The lifting is carried out by traction through the wire rope. When the length of the beam is too long, the distance between the two sets of lifting points distributed along its length is small, and the two sides of the lifting point extend long, making it difficult to maintain balance and shaking during the lifting process under the influence of the dead weight, affecting the accurate lifting positioning.

[0003] This case was created to solve the above problems. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the present invention provides an assembled building steel beam hoisting device and a construction method thereof, which solve the problems raised in the above-mentioned background technology.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: an assembled building steel beam lifting device, comprising a steel beam and a lifting device, wherein the lifting device is connected to the steel beam through a suspension mechanism and serves as an upper fixed end of the steel beam, the suspension mechanism comprises first limit heads embedded at points along the axial sides of the steel beam, and the center of gravity of the steel beam is placed between the two first limit heads, and a second limit head embedded in the steel beam is provided directly below the first limit head, and the two are connected and fixed by a connecting plate, and the side connection of the connecting plate is connected with a connecting component, and is used in conjunction with a vertical rod provided on one side thereof, so that the steel beam can be smoothly raised and lowered along the vertical rod arrangement direction during the vertical traction process.

[0008] As a preferred solution, further, the vertical rod member includes multiple vertical rods, wherein a trolley is arranged directly below the steel beam, the vertical rods are supported on the trolley and extend upward to the height of the hanger, and two vertical rods are respectively arranged on the diagonal sides of the steel beam.

[0009] As a preferred solution, further, the connection component includes a limit block, and a through slot extending vertically therethrough is provided on the limit block, and the size of the through slot is adapted to the vertically arranged vertical rod.

[0010] As a preferred solution, further, a through groove whose size is larger than the vertical rod is formed on the limit block, and a plurality of connecting blocks with intervals are arranged circumferentially in the through groove, and a buffer guide wheel is provided between two adjacent connecting blocks, and a buffer rod is pivotally connected to the middle part of the buffer guide wheel, and slots are respectively formed at two independent outer ends of the connecting block, and springs are respectively connected to the two ends of the buffer rod, and the outer ends of the springs extend into the slot and are connected to the inner wall thereof.

[0011] As a preferred solution, further, the size of the notch at the connecting block is larger than the size of the spring and the buffer rod.

[0012] As a preferred solution, further, the vertical rod member includes a vertically arranged sliding rod frame, which is supported on the trolley and extends upward to the height of the hanger. The sliding rod frame adopts two sliding rod frames respectively arranged on the diagonal sides of the steel beam, and a long groove is opened on the inner side thereof.

[0013] As a preferred embodiment, further, the connection component includes a fixed seat, a rotating seat is pivotally connected to the outer side of the fixed seat, and a guide wheel is pivotally connected to the rotating seat, wherein the guide wheel is placed in a long groove for sliding connection, and the width of the long groove is adapted to the thickness of the guide wheel.

[0014] As a preferred solution, further, a slide plate one and a slide plate two with a size difference are respectively connected between the two limit heads at the same height, and a slide plate two with a relatively larger size is provided with a slide groove on the inner side, and the slide plate one is slidably connected thereto.

[0015] A construction method of an assembled building steel beam hoisting device, comprising the following steps:

[0016] S1. Embed the first limit head at points on both sides of the axial direction of the steel beam and embed the second limit head at points on the lower side, and the first limit head and the second limit head are connected and fixed by a connecting plate;

[0017] S2. According to the length of the steel beam to be hoisted, adjust the relative distance between the slide plate 1 and the slide plate 2 so that the center of gravity of the steel beam needs to be placed between the two first limit heads, and the beam can be relatively horizontal when hoisted;

[0018] S3, placing the vertical rods on the first limit heads on both sides of the diagonal corners, and inserting them into the limit blocks to form a through slot that runs vertically through the limit blocks, so as to limit the preset track of the horizontal beam in the vertical direction;

[0019] S4. The lower end of the vertical rod is connected and fixed to the trolley, and the upper end extends upward to the height of the sling, or the lower end is independent and the upper end is connected to the sling.

[0020] (III) Beneficial effects

[0021] After adopting the above technical scheme, an assembled building steel beam lifting device and a construction method thereof provided by the present invention have the following beneficial effects compared with the prior art: a vertical rod is used to limit a preset trajectory, a limit block is set on the outer side of the additional connecting plate, a through groove is opened on the limit block that passes through the upper and lower parts, and the position of the vertical rod is limited, so that the hoist can always move along the vertical rod during the lifting and lowering process to avoid shaking problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of an example of the present invention;

[0023] Figure 2 This is a schematic diagram of an improved part of Example 1 of the present invention;

[0024] Figure 3 This is a schematic diagram of Example 2 of the present invention;

[0025] Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged local structure in the middle.

[0026] In the figure, 1. steel beam; 2. limit head; 3. extension plate; 31. slide plate 1; 32. slide plate 2; 4. wire rope; 5. lifting ear; 6. connecting plate; 7. limit block; 8. vertical rod; 9. through groove; 10. connecting block; 11. buffer guide wheel; 12. buffer rod; 13. spring; 14. slide rod frame; 15. slide groove; 16. long groove; 17. fixed seat; 18. rotating seat; 19. guide wheel. DETAILED DESCRIPTION

[0027] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0028] See attached Figure 1 As shown, a prefabricated building steel beam lifting device includes a steel beam 1 and a lifting device, wherein the lifting device is connected to the steel beam 1 through a suspension mechanism and serves as an upper fixed end of the steel beam 1. The steel beam 1 includes a vertical rod 8, an upper flange plate, and a lower flange plate. The suspension mechanism includes a first limit head 2, which is engaged at points along both sides of the axial direction of the steel beam 1 (the limit head 2 slides horizontally into the matching position of the steel beam 1), and the center of gravity of the steel beam 1 is placed between the two first limit heads 2, and lifting ears 5 are set on both sides of the upper end of the first limit head 2 to connect with the lifting device.

[0029] A second limit head 2 for engaging with the steel beam 1 is provided directly below the first limit head 2, and the two are connected and fixed by a connecting plate 6. The first limit head 2 and the second limit head 2 are provided with transverse through grooves, and the steel beam 1 is pressed against by screwed screws and pressure blocks, so that the steel beam 1 can be fastened in the transverse through grooves (conventional design, no detailed description is given). During the hoisting process of the hoist, the force application point is at the junction of the first limit head 2 and the steel beam 1, and there is a spacing between the two first limit heads 2, so a bending force will appear at the junction of the first limit head 2 and the steel beam 1, especially when the weight of the steel beam 1 is too large, and the phenomenon that there are multiple long steel beams 1 spliced ​​by welding is prone to bending problems. Therefore, the setting of the second limit head 2 allows the force-bearing end of the steel beam 1 to extend to the vertical whole, that is, the force-bearing point is increased to avoid bending problems.

[0030] Furthermore, a slide plate 1 31 and a slide plate 2 32 with a size difference are respectively connected between the two limit heads 2 at the same height. A slide groove 15 is provided on the inner side of the relatively larger slide plate 2 32, and the slide plate 1 31 is slidably connected thereto, so that the force at the joint between the limit head 2 and the steel beam 1 can be supported by extended buffering in the horizontal direction, thereby increasing the uniform force points of the steel beam 1, thereby preventing damage due to the distance between the lifting points, the large length of the steel beam 1, and the excessive weight.

[0031] It should be noted that the lifting is carried out by traction through the steel wire rope 4, which is prone to shaking during parallel movement, affecting the accurate positioning problem. Figure 1 As shown, the first embodiment adopts the method of limiting the preset trajectory by the vertical rod 8. By setting a limit block 7 on the outer side of the additional connecting plate 6, a through slot 9 is provided on the limit block 7, which is through from top to bottom. The size of the through slot 9 is adapted to the vertically arranged vertical rod 8, so that the sling can always move along the vertical rod 8 during the lifting and lowering process, avoiding the shaking problem.

[0032] There are many ways to set the vertical rod 8. For example, a trolley with a certain weight can be set just below the steel beam 1, and the vertical rod 8 can be supported on the trolley. During the transfer of the steel beam 1, the trolley (vertical rod 8) moves with it to reduce the shaking problem. Of course, the vertical rod 8 can also extend from top to bottom, that is, its upper end is connected to the sling (such as connecting a horizontal extension bracket at the sling) and the lower end is independent. Secondly, the vertical rod 8 can be set on the diagonal side of the steel beam 1.

[0033] In the second embodiment, when the through slot 9 is provided on the limit block 7, a side effect force is likely to occur, that is, it is difficult for the two limit heads 2 to support and erect the steel beam 1 to be absolutely level, resulting in a displacement / deviation of its center of gravity. After the deviation occurs, it will appear tilted, so there is a certain deviation in the gravity applied to the vertical rods 8 on both sides, which leads to a large friction between the limit block 7 and the vertical rod 8 during the lifting process, so it is necessary to increase the driving force. When the deviation of the tilt is too large, it is also easy to cause the vertical rod 8 to bend.

[0034] Therefore, the limit block 7 is improved to form a buffer at the contact point with the vertical rod 8 to reduce the bending caused by the direct hard force conversion between the two. Figure 2 As shown, a plurality of connecting blocks 10 with intervals are arranged circumferentially in the through slot 9 of the limit block 7, a guide wheel is arranged between two adjacent connecting blocks 10, a buffer rod 12 is pivotally connected to the middle of the guide wheel, and two independent outer ends of the connecting block 10 are respectively provided with slots, and the two ends of the buffer rod 12 are respectively connected to springs 13, and the outer ends of the springs 13 extend into the slot and are connected to the inner wall thereof.

[0035] Compared with the direct contact between the through slot 9 and the vertical rod 8, the contact between the guide wheel and the vertical rod 8 can reduce friction to a greater extent, and when the cross beam is slightly tilted, the circumferential spring 13 can play a certain buffering effect, and the force applied by the tilt will not be directly transmitted to the vertical rod 8. The size of the notch at the connecting block 10 is larger than the size of the spring 13 and the buffer rod 12, so that a certain degree of deflection can be achieved.

[0036] As a further preferred embodiment, the position limit block 7 and the connecting plate 6 can be connected in a pivoted manner instead of being fixed, so that the force of the cross beam tilting will not be transmitted to the vertical rod 8. At the same time, a coil spring 13 can be provided at the pivot joint between the two, so that the position limit block 7 returns to its initial state after being free of force.

[0037] Embodiment 3: In the above example, there will always be an additional force on the vertical rod 8, and this example further improves it. The vertical rod 8 in embodiment 2 is replaced with a slide rod frame 14, and a long groove 16 is opened on the inner side of the slide rod frame 14. Secondly, the limit seat is replaced with a fixed seat 17, and a rotating seat 18 is pivotally connected to the outer side of the fixed seat 17, and a guide wheel is pivotally connected to the rotating seat 18, wherein the guide wheel is placed in the long groove 16 for sliding connection, and the width of the long groove 16 is adapted to the thickness of the guide wheel.

[0038] The above design is that even if the entire beam is deflected, the rotating seat 18 will not deflect therewith due to the pivot connection, so the guide wheel can maintain its original state to a certain extent and be vertically slidably connected with the slide rod frame 14 to achieve guidance of the preset trajectory.

[0039] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A prefabricated building steel beam lifting device, comprising a steel beam and a lifting device, wherein the lifting device is connected to the steel beam through a suspension mechanism and serves as an upper fixed end of the steel beam, characterized in that: The suspension mechanism includes first limit heads that are embedded at points on both sides of the axial direction of the steel beam, and the center of gravity of the steel beam is placed between the two first limit heads. A second limit head that is embedded in the steel beam is provided directly below the first limit head. The two are connected and fixed by a connecting plate. The connecting plate is laterally connected with a connecting component and is used in conjunction with a vertical rod provided on one side thereof to ensure that the steel beam can be smoothly raised and lowered along the direction in which the vertical rods are arranged during the vertical traction process.

2. According to claim 1, the prefabricated building steel beam lifting device is characterized in that: A slide plate 1 and a slide plate 2 with a size difference are respectively connected between the two limit heads at the same height. A slide plate 1 and a slide plate 2 with a relatively larger size are provided on the inner side of the slide plate 2, and the slide plate 1 is slidably connected with the slide plate 1.

3. According to claim 1, the prefabricated building steel beam lifting device is characterized in that: The vertical rods include a plurality of vertical rods, wherein a trolley is arranged directly below the steel beam, the vertical rods are supported on the trolley and extend upward to the height of the hanger, and two vertical rods are respectively arranged at the diagonal sides of the steel beam.

4. The assembled building steel beam lifting device according to claim 3 is characterized in that: The connection assembly comprises a limit block, on which a through slot is formed which passes through the upper and lower parts, and the size of the through slot is adapted to the vertically arranged vertical rod.

5. The assembled building steel beam hoisting device according to claim 3 is characterized in that: The limit block is provided with a through slot whose size is larger than the vertical rod, and a plurality of connecting blocks with intervals are arranged circumferentially in the through slot, and a buffer guide wheel is provided between two adjacent connecting blocks, and a buffer rod is pivotally connected to the middle part of the buffer guide wheel, and two independent outer ends of the connecting block are respectively provided with slots, and the two ends of the buffer rod are respectively connected with springs, and the outer ends of the springs extend into the slot and are connected with the inner wall thereof.

6. The assembled building steel beam hoisting device according to claim 5, characterized in that: The size of the notch at the connection block is larger than the size of the spring and the buffer rod.

7. The assembled building steel beam hoisting device according to claim 1, characterized in that: The vertical rod member comprises a vertically arranged sliding rod frame, which is supported on a trolley and extends upward to the height of a sling. The sliding rod frame is composed of two rods respectively arranged on the diagonal sides of a steel beam, and a long groove is opened on the inner side thereof.

8. The assembled building steel beam hoisting device according to claim 7, characterized in that: The connection component includes a fixed seat, a rotating seat is pivotally connected to the outer side of the fixed seat, and a guide wheel is pivotally connected to the rotating seat, wherein the guide wheel is placed in a long groove for sliding connection, and the width of the long groove is adapted to the thickness of the guide wheel.

9. An assembled building steel beam hoisting device and a construction method thereof according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1. Embed the first limit head at points on both sides of the axial direction of the steel beam and embed the second limit head at points on the lower side, and the first limit head and the second limit head are connected and fixed by a connecting plate; S2. According to the length of the steel beam to be hoisted, adjust the relative distance between the slide plate 1 and the slide plate 2 so that the center of gravity of the steel beam needs to be placed between the two first limit heads, and the beam can be relatively horizontal when hoisted; S3, placing the vertical rods on the first limit heads on both sides of the diagonal corners, and inserting them into the limit blocks to form a through slot that runs vertically through the limit blocks, so as to limit the preset track of the horizontal beam in the vertical direction; S4. The lower end of the vertical rod is connected and fixed to the trolley, and the upper end extends upward to the height of the sling, or the lower end is independent and the upper end is connected to the sling.

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