Auxiliary hoisting mechanism for cantilever steel truss

Abstract

The utility model provides an auxiliary hoisting mechanism for a cantilever steel truss. The cantilever steel truss is provided with a frame body opening. The frame body openings form two frame body opening ends of the cantilever steel truss, and the two frame body opening ends are both used for being connected with a mounting surface; wherein the auxiliary hoisting mechanism comprises two bases and a telescopic rod; the two bases are used for being installed at the opening ends of the two frame bodies respectively. The telescopic rod is arranged between the two bases, and the two ends of the telescopic rod are suitable for being connected with the two bases correspondingly. The telescopic rod comprises an adjusting piece used for adjusting the length of the telescopic rod. When the two bases are installed at the opening ends of the two frame bodies respectively and the two ends of the telescopic rod are connected with the two bases respectively, the adjusting piece can enable the length of the telescopic rod to be increased or decreased, so that the distance between the opening ends of the two frame bodies is increased or decreased. According to the auxiliary hoisting mechanism for the cantilever steel truss, the overall structural strength of the cantilever steel truss is improved, the mounting precision of the cantilever steel truss is improved, and meanwhile the construction efficiency of the cantilever steel truss is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of steel truss hoisting, and more specifically, to an auxiliary hoisting mechanism for cantilever steel trusses. Background Art

[0002] Steel trusses have the characteristics of light weight, good earthquake resistance and fast construction. Therefore, in recent years, steel truss prefabricated structures have developed rapidly and have been widely used in building structures. Among them, in order to achieve architectural appearances of various shapes, various cantilever steel trusses are usually required.

[0003] In the existing cantilever steel truss installation process, it is usually necessary to hoist the cantilever steel truss into place using hoisting equipment.

[0004] The inventors found that if Figure 1 As shown, some cantilever steel trusses in the prior art have frame openings; during the hoisting process of the cantilever steel trusses with frame openings, due to the influence of the cantilever steel trusses' own gravity, the relative position of the open end of the cantilever steel truss and the pre-embedded anchor plate of the floor slab is difficult to lock, resulting in difficulty in the welding process, causing a technical defect of reduced overall construction efficiency. Utility Model Content

[0005] The purpose of the present application is to provide an auxiliary lifting mechanism for a cantilever steel truss, aiming to solve the technical problem that during the existing cantilever steel truss lifting process, the relative position of the open end of the cantilever steel truss and the pre-embedded anchor plate of the floor slab is difficult to lock, resulting in a reduction in the overall construction efficiency.

[0006] To achieve the above-mentioned purpose, the technical solution adopted in the present application is: to provide an auxiliary lifting mechanism for a cantilever steel truss, wherein the cantilever steel truss has a frame opening; the frame opening forms two frame opening ends of the cantilever steel truss, and the two frame opening ends are used to be connected to the installation surface; characterized in that the auxiliary lifting mechanism includes:

[0007] Two bases, used to be installed at the two open ends of the frame respectively; and

[0008] A telescopic rod, arranged between the two bases, and having two ends adapted to be connected to the two bases respectively; the telescopic rod comprises an adjusting member for adjusting its length;

[0009] When the two bases are respectively installed at the two open ends of the frame and the two ends of the telescopic rod are respectively connected to the two bases, the adjusting member can increase or decrease the length of the telescopic rod to increase or decrease the distance between the two open ends of the frame.

[0010] Preferably, the telescopic rod further comprises:

[0011] Two rod sections are arranged between the two bases and are coaxially arranged; and the two rod sections are respectively connected to the two bases, and the adjacent ends thereof are connected through the adjusting member;

[0012] When the two bases are respectively installed at the two frame opening ends and the two rod sections are respectively connected to the two bases, the adjusting member can move the two rod sections toward or away from each other to increase or decrease the distance between the two frame opening ends.

[0013] Preferably, the adjusting member has two slots with openings facing the two rod sections respectively, and the two rod sections are respectively inserted into the two slots; wherein an internal thread structure is provided on the inner peripheral wall of the slot, and the insertion end of the rod section has an external thread structure suitable for threaded connection with the internal thread structure;

[0014] Wherein, when the two bases are respectively mounted on the two open ends of the frame body and the two rod sections are respectively connected to the two bases, rotating the adjusting member can cause the two rod sections to move toward or away from each other.

[0015] Preferably, the outer wall of the adjusting member is provided with a plurality of operating rods spaced apart along its circumference; wherein each of the operating rods extends radially outwardly along the adjusting member, and each of the extending ends of the operating rods is provided with a spherical handle.

[0016] Preferably, each of the slots has a plurality of positioning holes on its inner wall that penetrate through the outer wall of the adjusting member; each of the positioning holes has a first bolt in it, and the first bolt is threadedly connected to the positioning hole;

[0017] Wherein, when the rod section is inserted into the slot body, the first bolt is suitable for being screwed into the slot body to abut against the rod section.

[0018] Preferably, two ends of the telescopic rod are hinged to the two bases respectively.

[0019] Preferably, the auxiliary lifting mechanism further comprises:

[0020] The monitoring component is arranged between the two bases and is used for monitoring the relative positions of the two opening ends of the frame bodies.

[0021] Preferably, the monitoring component comprises:

[0022] a transmitter, fixedly mounted on one of the bases, for generating and outputting signals, with its signal output portion disposed toward the other base; and

[0023] A receiver, fixedly arranged on the other base, for receiving the signal output by the transmitter and detecting the signal strength;

[0024] Wherein, when the relative positions of the two opening ends of the frame bodies change, the signal strength obtained by the receiver changes synchronously.

[0025] Preferably, the auxiliary lifting mechanism further comprises:

[0026] The hoisting structure is used to be installed on the cantilever steel truss and is used to be connected with the hoisting equipment.

[0027] Preferably, the hoisting structure comprises:

[0028] A bracket having a groove suitable for the cantilever steel truss to be embedded in; and

[0029] A lifting lug, arranged on the top of the bracket, for connecting with the lifting equipment;

[0030] Therein, a plurality of second bolts are threadedly connected to the bracket, and each of the second bolts is suitable for being screwed into the groove and abutting against the cantilever steel truss to limit the cantilever steel truss from withdrawing from the groove.

[0031] In the embodiment of the present application, when hoisting the cantilever steel truss, the two bases are first installed on the two frame open ends respectively, and then the two ends of the telescopic rod are connected to the two bases respectively. Finally, the construction personnel adjust the length of the telescopic rod through the adjusting piece, and then adjust and fix the distance between the two frame open ends to facilitate the installation of the cantilever steel truss; after the cantilever steel truss is installed, the two bases and the telescopic rod are removed, or the telescopic rod is removed alone to achieve the recovery of the present mechanism.

[0032] Compared with the prior art, the auxiliary lifting mechanism for the cantilever steel truss provided in the embodiment of the present application improves the structural strength of the cantilever steel truss during overall lifting, avoids offset between the open end of the frame and the embedded anchor plate during welding, improves installation accuracy, and also speeds up the construction efficiency of the cantilever steel truss. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0034] Figure 1 It is a schematic diagram of the main structure of a cantilever steel truss in the prior art;

[0035] Figure 2 A schematic diagram of the main structure of an auxiliary lifting mechanism for a cantilever steel truss provided in an embodiment of the present application;

[0036] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of the A area in the middle;

[0037] Figure 4 A schematic cross-sectional view of an auxiliary lifting mechanism for a cantilever steel truss provided in an embodiment of the present application;

[0038] Figure 5 for Figure 4 Schematic diagram of the enlarged structure of the middle B area;

[0039] Figure 6 A schematic diagram of the three-dimensional structure of the adjusting member used in the embodiment of the present application;

[0040] Among them, the reference numerals in the figure are:

[0041] 1. Base; 2. Telescopic rod; 21. Rod section; 211. External thread structure; 3. Adjustment piece; 31. Internal thread structure; 32. Operating rod; 321. Ball handle; 33. First bolt; 34. Positioning hole; 4. Monitoring component; 41. Transmitter; 42. Receiver; 5. Lifting structure; 51. Bracket; 52. Lifting ear; 53. Second bolt; 6. Cantilever steel truss; 61. Frame opening; 62. Frame opening end. DETAILED DESCRIPTION

[0042] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0043] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0044] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to 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.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0046] Please also read Figure 1 and Figure 2 The auxiliary lifting mechanism for cantilever steel trusses provided in the present application is now described. The auxiliary lifting mechanism for cantilever steel trusses has a frame opening 61, the frame opening 61 forms two frame opening ends 62 of the cantilever steel trusses 6, and the two frame opening ends 62 are both used to connect with the installation surface of the pre-embedded anchor plate of the floor slab; wherein the auxiliary lifting mechanism includes two bases 1 and a telescopic rod 2.

[0047] The two bases 1 are respectively installed on the two frame opening ends 62 by welding, or they can be installed on the two frame opening ends 62 by magnetic attraction; and the two bases 1 need to be precisely positioned during installation to ensure that the two bases 1 are arranged relative to each other.

[0048] The telescopic rod 2 is arranged between the two bases 1, and both ends of the telescopic rod 2 are suitable for being connected to the two bases 1 respectively; the telescopic rod 2 includes an adjusting member 3 for adjusting the length thereof.

[0049] Among them, when the two bases 1 are respectively installed on the two frame opening ends 62 and the two ends of the telescopic rod 2 are respectively connected to the two bases 1, the adjusting member 3 can increase or decrease the length of the telescopic rod 2 to increase or decrease the distance between the two frame opening ends 62, and then adjust the opening size of the two frame opening ends 62 so that the two frame opening ends 62 are connected to the installation surface of the pre-embedded anchor plate of the floor slab.

[0050] In the embodiment of the present application, when hoisting the cantilever steel truss 6, the two bases 1 are first installed on the two frame open ends 62 respectively, and then the two ends of the telescopic rod 2 are respectively connected to the two bases 1. Finally, the construction personnel adjust the length of the telescopic rod 2 through the adjustment member 3, and then adjust and fix the distance between the two frame open ends 62 to facilitate the installation of the cantilever steel truss 6; after the cantilever steel truss 6 is installed, the two bases 1 and the telescopic rod 2 are removed, or the telescopic rod 2 is removed alone to achieve the recovery of the present mechanism.

[0051] Compared with the prior art, the auxiliary lifting mechanism for the cantilever steel truss provided in the embodiment of the present application improves the structural strength of the cantilever steel truss 6 during overall lifting, avoids offset between the frame open end 62 and the embedded anchor plate during welding, improves installation accuracy, and also speeds up the construction efficiency of the cantilever steel truss 6.

[0052] In some embodiments, please refer to Figures 2 to 5 As a specific implementation of the auxiliary lifting mechanism for the cantilever steel truss provided in the present application, the telescopic rod 2 also includes two rod sections 21.

[0053] The two rod sections 21 are both disposed between the two bases 1 , and the two rod sections 21 are coaxially disposed; moreover, the two rod sections 21 are respectively connected to the two bases 1 , and the adjacent ends of the two rod sections 21 are connected via an adjusting member 3 .

[0054] When the two bases 1 are respectively installed at the two frame opening ends 62 and the two rod sections 21 are respectively connected to the two bases 1 , the adjusting member 3 can move the two rod sections 21 toward or away from each other to increase or decrease the distance between the two frame opening ends 62 .

[0055] In some embodiments, please refer to Figures 2 to 6 As a specific embodiment of the auxiliary lifting mechanism for the cantilever steel truss provided in the present application, the adjusting member 3 has two grooves with openings facing the two rod sections 21 respectively, and the two rod sections 21 are respectively inserted into the two grooves; wherein, the inner circumferential walls of the two grooves are provided with internal thread structures 31, and the thread directions of the two internal thread structures 31 are opposite; the insertion ends of the two rod sections 21 respectively have external thread structures 211 suitable for threaded connection with the two internal thread structures 31.

[0056] When the two bases 1 are respectively installed at the two frame opening ends 62 and the two rod sections 21 are respectively connected to the two bases 1 , the construction personnel can move the two rod sections 21 toward or away from each other by rotating the adjustment member 3 .

[0057] By adopting the above technical solution, the two rod sections 21 and the adjusting member 3 together form a forward and reverse tooth transmission screw structure. The forward and reverse tooth transmission screw has the advantages of stable transmission, small space occupation and easy operation. Therefore, construction personnel can realize the toward or away movement of the two rod sections 21 by simply rotating the adjusting member 3.

[0058] In some embodiments, see Figure 6 As a specific embodiment of the auxiliary lifting mechanism for the cantilever steel truss provided in the present application, the outer wall of the adjusting member 3 has a plurality of operating rods 32 arranged at intervals along its circumference, wherein each operating rod 32 extends radially outward of the adjusting member 3, and the extending end of each operating rod 32 has a spherical handle 321.

[0059] By adopting the above technical solution, construction workers can more conveniently apply external force to the adjusting member 3 to make it rotate, thereby improving construction work efficiency.

[0060] In some embodiments, see Figure 6 As a specific implementation of the auxiliary lifting mechanism for the cantilever steel truss provided in the present application, each trough body has a plurality of positioning holes 34 on the inner wall that penetrate the outer wall of the adjusting member 3; each positioning hole 34 has a first bolt 33 inside, and each first bolt 33 is threadedly connected to the corresponding positioning hole 34; the first bolt 33 adopts a pointed set screw to achieve a better tightening effect.

[0061] When the rod section 21 is inserted into the slot, the first bolt 33 is adapted to be screwed into the slot and abut against the rod section 21 .

[0062] By adopting the above technical solution, after the construction personnel adjust the adjustment member 3 so that the opening size of the two frame opening ends 62 meets the installation size requirements, the construction personnel screw the first bolt 33 into the positioning hole 34 and abut against the rod section 21, thereby limiting the rotation of the adjustment member 3 and then locking the position of the two frame opening ends 62, thereby ensuring the dimensional accuracy of the cantilever steel truss 6 during installation and construction.

[0063] In some embodiments, please refer to Figure 2 and Figure 4 As a specific implementation of the auxiliary lifting mechanism for the cantilever steel truss provided in the present application, both ends of the telescopic rod 2 are hinged to the two bases 1 respectively.

[0064] By adopting the above technical solution, when the length of the telescopic rod 2 increases or decreases, the two ends of the telescopic rod 2 are suitable for rotating with the two bases 1 along the hinge axis, thereby offsetting the lateral movement stress generated when the distance between the two frame opening ends 62 increases or decreases, thereby ensuring that the structural strength of the cantilever steel truss 6 is not affected.

[0065] In some embodiments, please refer to Figure 2 and Figure 4 As a specific implementation of the auxiliary lifting mechanism for the cantilever steel truss provided in the present application, the auxiliary lifting mechanism also includes a monitoring component 4.

[0066] The monitoring component 4 is disposed between the two bases 1 and is used to monitor the relative positions of the two frame opening ends 62 .

[0067] In some embodiments, please refer to Figure 2 and Figure 4 As a specific implementation of the auxiliary lifting mechanism for the cantilever steel truss provided in the present application, the monitoring component 4 includes a transmitter 41 and a receiver 42 .

[0068] The transmitter 41 is fixedly mounted on one of the bases 1 for generating and outputting signals, and its signal output portion is disposed toward the other base 1; the transmitter 41 may be a laser generator, which may emit a stable linear laser beam.

[0069] The receiver 42 is fixedly mounted on another base 1, and is used to receive the signal output by the transmitter 41 and monitor the signal strength. The receiver 42 may be a laser sensor. When the laser beam is vertically irradiated onto the laser sensor, the signal strength received by the laser sensor reaches a maximum value. The smaller the angle between the laser beam and the laser sensor, the lower the signal strength received by the laser sensor.

[0070] By adopting the above technical solution, when the relative position of the two frame opening ends 62 changes, the signal strength obtained by the receiver 42 changes synchronously; when the construction personnel adjust the adjustment member 3, they can judge whether the relative position of the two frame opening ends 62 meets the installation requirements based on the signal strength of the receiver 42.

[0071] In some embodiments, see Figure 2 As a specific implementation of the auxiliary lifting mechanism for the cantilever steel truss provided in the present application, the auxiliary lifting mechanism also includes a lifting structure 5.

[0072] The lifting structure 5 is used to be installed on the cantilever steel truss 6, and it is used to be connected to the lifting equipment; when performing the lifting operation of the cantilever steel truss 6, the lifting structure 5 can adapt to the profile used for the cantilever steel truss 6, and the construction personnel can install the lifting structure 5 on the cantilever steel truss 6 during the prefabrication stage of the cantilever steel truss 6, thereby shortening the hanging time in the lifting operation.

[0073] In some embodiments, as a specific implementation of the auxiliary lifting mechanism for the cantilever steel truss provided in the present application, the lifting structure 5 includes a bracket 51 and a lifting lug 52 .

[0074] The bracket 51 has a groove suitable for the cantilever steel truss 6 to be embedded, and the size of the groove is adapted to the profile type of the cantilever steel truss 6 used in the construction.

[0075] The lifting lug 52 is arranged on the top of the bracket 51 . The lifting lug 52 and the bracket 51 are fixed by welding or integrally formed by casting. The lifting lug 52 is used to be connected to the lifting equipment.

[0076] A plurality of second bolts 53 are threadedly connected to the bracket 51 , and each second bolt 53 is suitable for being screwed into the groove and abutting against the cantilevered steel truss 6 to restrict the cantilevered steel truss 6 from withdrawing from the groove.

[0077] By adopting the above technical solution, construction workers can easily install the hoisting structure 5 on the cantilever steel truss 6 when hoisting the cantilever steel truss 6 or in the prefabrication stage of the cantilever steel truss 6, thereby shortening the hanging time in the hoisting operation.

[0078] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An auxiliary lifting mechanism for a cantilever steel truss, wherein the cantilever steel truss has a frame opening; the frame opening forms two frame opening ends of the cantilever steel truss, and both of the frame opening ends are used to be connected to a mounting surface; characterized in that: The auxiliary lifting mechanism comprises: Two bases, used to be installed at the two open ends of the frame respectively; and A telescopic rod, arranged between the two bases, and having two ends adapted to be connected to the two bases respectively; the telescopic rod comprises an adjusting member for adjusting its length; When the two bases are respectively installed at the two open ends of the frame and the two ends of the telescopic rod are respectively connected to the two bases, the adjusting member can increase or decrease the length of the telescopic rod to increase or decrease the distance between the two open ends of the frame.

2. The auxiliary lifting mechanism for cantilever steel truss according to claim 1, characterized in that: The telescopic rod also includes: Two rod sections are arranged between the two bases and are coaxially arranged; and the two rod sections are respectively connected to the two bases, and the adjacent ends thereof are connected through the adjusting member; When the two bases are respectively installed at the two frame opening ends and the two rod sections are respectively connected to the two bases, the adjusting member can move the two rod sections toward or away from each other to increase or decrease the distance between the two frame opening ends.

3. The auxiliary lifting mechanism for cantilever steel trusses according to claim 2, characterized in that: The adjusting member has two slots with openings facing the two rod sections respectively, and the two rod sections are respectively inserted into the two slots; wherein an internal thread structure is provided on the inner peripheral wall of the slot, and the insertion end of the rod section has an external thread structure suitable for threaded connection with the internal thread structure; Wherein, when the two bases are respectively mounted on the two open ends of the frame body and the two rod sections are respectively connected to the two bases, rotating the adjusting member can cause the two rod sections to move toward or away from each other.

4. The auxiliary hoisting mechanism for cantilever steel trusses according to claim 3, characterized in that: The outer wall of the adjusting member is provided with a plurality of operating rods spaced along its circumference; each of the operating rods extends radially outwards of the adjusting member, and the extending end of each operating rod is provided with a spherical handle.

5. The auxiliary hoisting mechanism for cantilever steel trusses according to claim 3, characterized in that: Each of the slots has a plurality of positioning holes on its inner wall that penetrate through the outer wall of the adjusting member; each of the positioning holes has a first bolt in it, and the first bolt is threadedly connected to the positioning hole; Wherein, when the rod section is inserted into the slot body, the first bolt is suitable for being screwed into the slot body to abut against the rod section.

6. The auxiliary lifting mechanism for cantilever steel trusses according to any one of claims 1 to 5, characterized in that: Both ends of the telescopic rod are hinged to the two bases respectively.

7. The auxiliary hoisting mechanism for cantilever steel trusses according to claim 1, characterized in that: The auxiliary lifting mechanism also includes: The monitoring component is arranged between the two bases and is used for monitoring the relative positions of the two opening ends of the frame bodies.

8. The auxiliary hoisting mechanism for cantilever steel trusses according to claim 7, characterized in that: The monitoring components include: a transmitter, fixedly mounted on one of the bases, for generating and outputting signals, with its signal output portion disposed toward the other base; and A receiver, fixedly arranged on the other base, for receiving the signal output by the transmitter and detecting the signal strength; Wherein, when the relative positions of the two opening ends of the frame bodies change, the signal strength obtained by the receiver changes synchronously.

9. The auxiliary hoisting mechanism for cantilever steel trusses according to claim 1, characterized in that: The auxiliary lifting mechanism also includes: The hoisting structure is used to be installed on the cantilever steel truss and is used to be connected with the hoisting equipment.

10. The auxiliary hoisting mechanism for cantilever steel trusses according to claim 9, characterized in that: The hoisting structure comprises: A bracket having a groove suitable for the cantilever steel truss to be embedded in; and A lifting lug, arranged on the top of the bracket, for connecting with the lifting equipment; Therein, a plurality of second bolts are threadedly connected to the bracket, and each of the second bolts is suitable for being screwed into the groove and abutting against the cantilever steel truss to limit the cantilever steel truss from withdrawing from the groove.

Images