Temporary support device for long-span truss and installation method for long-span truss

Abstract

The present application relates to a temporary support device for a large-span truss and a method for installing the large-span truss, and relates to the field of building construction. The temporary support device for the large-span truss includes a main support assembly, a support platform, and a mobile assembly; the support platform is connected to the main support assembly so that the main support assembly supports the support platform; the support platform has a groove on the support surface, and the groove has a concave extreme point; the mobile assembly includes a mounting seat and a universal ball, and the universal ball is freely rotatable and connected to the mounting seat; the groove is used to accommodate the universal ball; the installation method of the large-span truss includes the following steps: S1: the main support assembly is in place, and the mobile assembly is fixed to the truss assembly; S2: the truss assembly is hoisted into the groove of the support platform; S3: the universal ball is rotated to the concave extreme point; S4: the truss assembly to be installed is fixed to a wall, beam, column, or an installed truss assembly. The present application has the effect of facilitating the splicing of the truss assembly to be installed with the installed truss assembly.

Description

Technical Field

[0001] The present application relates to the field of building construction, and in particular to a temporary support device for a large-span truss and an installation method for the large-span truss. Background Art

[0002] Trusses are commonly found in the eaves or roofs of buildings. In order to achieve an aesthetically pleasing effect, many buildings currently have eaves or roofs with a large width, which results in the use of long-span truss structures. Figure 1 A large-span truss structure usually includes multiple small truss groups 1. Each truss group 1 includes an upper chord 11, a lower chord 12, an upper chord ball 13, a lower chord ball 14 and a scissors brace 15. The two adjacent upper chords 11 are connected by the upper chord ball 13, and the two adjacent lower chords 12 are connected by the lower chord ball 14. The upper two ends of the scissors bar are each connected to an upper chord ball 13, and the lower two ends are each connected to a lower chord ball 14.

[0003] In the related art, when installing a truss, usually after multiple truss groups 1 are assembled on the ground, the crane's lifting rope is fixed to the truss as a whole, and then the truss as a whole is lifted upward by the crane, and finally the two ends of the assembled truss as a whole are fixed to the beams or walls on both sides of the building. However, at present, due to the large span and heavy weight of some trusses, it is difficult to lift them with a crane; therefore, the trusses are usually divided into multiple groups and lifted in batches in sequence to reduce the weight of a single lifting; during lifting, a support device is built under the installed truss group 1, and then the truss group 1 to be installed is lifted to the installation position by a crane, and personnel assist in moving the truss group 1 to be installed to splice it with the installed truss group 1.

[0004] With respect to the above-mentioned related technologies, in the process of splicing the truss group 1 to be installed and the installed one, personnel are required to assist in moving the truss group 1 to be installed. However, due to the heavy weight of the truss group 1, it is difficult for personnel to perform the moving operation. Therefore, how to facilitate the splicing of the truss group 1 to be installed and the installed truss group 1 is an urgent problem to be solved. Summary of the Invention

[0005] In order to facilitate the splicing of a truss group to be installed with an installed truss group, the present application provides a temporary support device for a large-span truss and an installation method for the large-span truss.

[0006] In a first aspect, the present application provides a temporary support device for a large-span truss, which adopts the following technical solution:

[0007] A temporary support device for a large-span truss, comprising a main support assembly, a support platform and a moving assembly;

[0008] The support platform is connected to the main support assembly so that the support platform is supported by the main support assembly;

[0009] The support platform is provided with a groove on the support surface, and the groove has a concave extreme point;

[0010] The moving assembly includes a mounting seat and a universal ball, and the universal ball is freely rotatably connected to the mounting seat;

[0011] The groove is used for placing the universal ball. When the universal ball is located on the groove surface of the groove, the universal ball can slide along the groove surface of the groove to the concave extreme point under the guidance of gravity.

[0012] By adopting the above technical solution, during operation, the main support assembly is moved below the truss group to be installed, so that when the universal ball is located at the extreme point of the depression, the truss group to be installed is located at the preset installation position; then, the mounting seat is fixed to the truss group to be installed, and the truss group is lifted and moved by a crane, so that the universal ball overlaps the groove surface of the groove on the support surface, and then, the truss group is pushed to move on the support platform, and the universal ball will be rolled to the extreme point of the depression with the help of the inclined surface of the groove, thereby completing the positioning of the truss group; by providing the groove, the truss group can be moved to the desired position more labor-saving and conveniently with the help of the inclined surface and gravity compared to moving the truss group on a plane or in the air; after the truss group is moved to the desired position, the two adjacent truss groups can be fixed by welding or other means.

[0013] Optionally, an auxiliary pushing assembly is further included, wherein the auxiliary pushing assembly includes a connecting piece and two pushing pieces;

[0014] The connecting member is connected to the supporting platform, one end of the pushing member is slidably connected to the connecting member, and a clamping area is formed between the supporting platform and the pushing surfaces of the two pushing members. The size of the clamping area is changed by the pushing member sliding along the connecting member;

[0015] The vertical distances between the concave extreme point and the planes where the pushing surfaces of the two pushing members are located are equal.

[0016] By adopting the above technical solution, when the universal ball needs to be moved, the two pushers are moved toward the side close to each other, which will push the universal ball to move. The universal ball is driven to move by the pushers, and there is no need for direct contact between the person's hands and the universal ball. The mounting seat can be prevented from squeezing the person's hands, thereby improving safety performance during operation.

[0017] Optionally, the connecting member is connected to the supporting platform in a circumferentially rotatable manner, and the concave pole is located at the center position of the connecting member along the circumferential motion trajectory of the supporting platform.

[0018] By adopting the above technical solution, when the connecting part is rotated along the supporting platform, the pushing part is gradually moved toward the extreme point of the depression, and the universal ball is pushed toward the extreme point of the depression from different positions. It can push the universal ball to move from multiple positions, thereby improving the versatility of the product.

[0019] Optionally, it further includes a drive assembly, the drive assembly including a gear ring, a gear and a first motor;

[0020] The gear ring is connected to the support platform in a circumferentially rotatable manner, and the connecting member is fixedly connected to the gear ring to rotate along the support platform along the circumference of the gear ring;

[0021] The gear is rotatably connected to the support platform, and the gear is meshed with the gear ring;

[0022] The first motor is connected between the support platform and the gear ring to provide power for the gear ring to rotate along the support platform.

[0023] By adopting the above technical solution, when the driving connecting member rotates, the first motor drives the gear to rotate, and the gear ring engaged with the gear will rotate with the gear, and the connecting member fixed on the gear ring will rotate synchronously with the gear ring; by setting a driving component to provide power for the rotation of the connecting member, automated operation is realized, which can further reduce the workload of personnel.

[0024] Optionally, the two pushing members are provided with a first embedding groove on the pushing surface, and the first embedding groove is adapted to the universal ball for embedding the universal ball.

[0025] By adopting the above technical solution, when the two pushers clamp the universal ball, the existence of the first embedding groove can fit the universal ball more closely than when the universal ball is clamped by a straight plate-shaped surface, so as to clamp the universal ball more firmly.

[0026] Optionally, the main support assembly includes a base, a cross slide and a first telescopic support leg;

[0027] The support platform is located above the base, and the cross slide is connected between the base and the support platform to drive the support platform to slide along the base;

[0028] The first telescopic support leg is fixedly connected to the base to change the vertical height of the base.

[0029] By adopting the above technical solution, when the position of the support platform needs to be adjusted, the cross slide is turned on to drive the support platform to move. By setting up the cross slide, the support platform can be easily moved to multiple positions. The automated driving method can further reduce the workload of the operators. In addition, when the height of the support platform needs to be adjusted, the height of the support platform can be changed by simply extending and retracting the first telescopic support leg, which further facilitates the alignment operation.

[0030] Optionally, it further includes an auxiliary support assembly, the auxiliary support assembly including a second telescopic support leg, a movable seat and a linear drive member;

[0031] The second telescopic support leg is fixedly connected to the movable base to change the height of the movable base;

[0032] One end of the linear drive member is fixedly connected to the moving seat, and the other end is fixedly connected to the base, so as to change the distance between the base and the moving seat.

[0033] By adopting the above technical solution, when the main support assembly needs to be moved, the linear drive component is extended and the auxiliary support assembly is fixed in place, so that the distance between the main support assembly and the auxiliary support assembly can be changed; by setting the auxiliary support assembly, it is convenient to move the main support assembly to the bottom of the next truss group to be installed.

[0034] Optionally, two auxiliary support assemblies are provided, and the main support assembly is connected between the two auxiliary support assemblies.

[0035] By adopting the above technical solution, when it is necessary to move the main support assembly, the linear drive member in the first auxiliary support assembly is extended to move the first auxiliary support assembly forward; then the first jack is retracted to separate the first support pier from the ground; then, while the linear drive member in the first auxiliary support assembly is retracted, the linear drive member in the second auxiliary support assembly is extended to push the main support assembly toward the side of the first auxiliary support assembly, then, the first jack is extended to make the first support pier contact with the ground; finally, the linear drive member in the second auxiliary support assembly is retracted, so that the second auxiliary support assembly can be moved toward the side of the first auxiliary support assembly, thereby completing the movement of the main support assembly and the two auxiliary support assemblies; by arranging the main support assembly between the two auxiliary support assemblies, the main support assembly can be made more stable, and at the same time, the main support assembly can be pushed forward more stably.

[0036] Optionally, an electromagnet is fixedly connected to the mounting base.

[0037] By adopting the above technical solution, when fixing the mounting seat and the truss group, the electromagnet is energized to fix the electromagnet and the steel truss group; by providing the electromagnet, the steel truss group and the mounting seat can be fixedly connected.

[0038] In a second aspect, the present application provides a method for installing a large-span truss, which adopts the following technical solution:

[0039] A method for installing a large-span truss comprises the following steps:

[0040] S1: The main support assembly is in place and the moving assembly is fixed to the truss group;

[0041] S2: Hoist the truss assembly into the groove of the support platform;

[0042] S3: Move the universal ball in the groove so that the universal ball rotates to the extreme point of the depression;

[0043] S4: Fix the truss group to be installed on the wall, beam, column or the installed truss group.

[0044] By adopting the above technical solution, during operation, the main support assembly is first moved to the bottom of the truss group to be installed, and the moving assembly is fixed to the truss group; then, the truss group is lifted by a crane and placed in the groove, and finally the universal ball is pushed to the extreme point of the depression and the truss group to be installed is fixed; this solution can facilitate the placement of the truss group to be installed by setting the groove.

[0045] In summary, this application includes at least one of the following beneficial technical effects:

[0046] 1. By setting the groove, the truss group can be moved to the desired position more easily and labor-savingly by using the inclined surface and gravity, compared with moving the truss group on a plane or in the air;

[0047] 2. The drive assembly and the auxiliary push assembly can further facilitate personnel to move the universal ball to the desired position;

[0048] 3. By setting up a cross slide, it is convenient for personnel to move the support platform to the required position. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is a structural diagram of a truss group in the background technology of this application;

[0050] Figure 2 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0051] Figure 3 This is a schematic structural diagram of the main support assembly and the auxiliary support assembly in an embodiment of the present application;

[0052] Figure 4 This is a schematic diagram of the structure of the drive assembly in an embodiment of the present application;

[0053] Figure 5 is a schematic cross-sectional structural diagram of a drive assembly in an embodiment of the present application;

[0054] Figure 6 This is a schematic structural diagram of the auxiliary pusher assembly in an embodiment of the present application;

[0055] Figure 7 It is a structural diagram of the mobile component in an embodiment of the present application;

[0056] Figure 8 is a schematic cross-sectional structural diagram of a mobile assembly in an embodiment of the present application;

[0057] Figure 9 It is a structural diagram of the electromagnet, electric push rod and clamping block in the embodiment of the present application.

[0058] Explanation of reference numerals: 1. truss group; 11. upper chord; 12. lower chord; 13. upper chord ball; 14. lower chord ball; 15. scissors brace; 2. main support assembly; 21. base; 22. first telescopic support leg; 221. first support pier; 222. first jack; 23. cross slide; 24. second motor; 3. support platform; 31. rotating ring groove; 32. guide groove; 33. rotating groove; 34. groove; 4. auxiliary support assembly; 41. second telescopic support leg; 411. second jack; 412. second support pier; 413. caster; 42. moving seat; 43. linear drive member; 5. Drive assembly; 51, gear ring; 511, guide ring; 52, gear; 53, first motor; 6, auxiliary pusher assembly; 61, connector; 611, slideway; 62, third motor; 63, bidirectional screw; 64, slider; 65, pusher; 651, pusher surface; 652, clamping area; 653, first slot; 654, fillet; 7, moving assembly; 71, mounting base; 711, second slot; 712, third slot; 713, fourth slot; 714, fifth slot; 715, electromagnet; 716, electric push rod; 717, clamping block; 72, ball seat; 721, ball groove; 73, universal ball; DETAILED DESCRIPTION

[0059] The following is combined with Figure 2-9 This application is described in further detail.

[0060] The embodiment of the present application discloses a temporary support device for a large-span truss. Figure 2 、 Figure 3 and Figure 4The temporary support device of the large-span truss includes a main support assembly 2, a support platform 3, an auxiliary support assembly 4, a driving assembly 5, an auxiliary pushing assembly 6 and a moving assembly 7; an auxiliary support assembly 4 is provided on each side of the main support assembly 2, so that the main support assembly 2 can move through the auxiliary support assembly 4; the support platform 3 is connected to the main support assembly 2, so that the main support assembly 2 drives the support platform 3 to move; the auxiliary pushing assembly 6 is connected to the support platform 3 through the driving assembly 5, so that the driving assembly 5 drives the auxiliary pushing assembly 6 to make a circular rotation on the support platform 3; the auxiliary pushing assembly 6 is used to clamp the moving assembly 7; the moving assembly 7 is used to carry the truss group 1.

[0061] Reference Figure 3 The main support assembly 2 includes a base 21, multiple first telescopic support legs 22 and a cross slide 23; the base 21 is a rectangular base. In this embodiment, four first telescopic support legs 22 are provided, and the four first telescopic support legs 22 are respectively located below the four corners of the base 21 to ensure that the base 21 remains horizontal; the first telescopic support leg 22 includes a first support pier 221 and a first jack 222. The first jack 222 is vertically arranged, and the cylinder body of the first jack 222 is fixedly connected to the top wall of the first support pier 221 by a flange and screws, and the piston rod of the first jack 222 is fixedly connected to the bottom wall of the base 21 by a flange and screws, so that the height of the base 21 can be changed by the first jack 222.

[0062] Reference Figure 2 and Figure 3 The support platform 3 is horizontally arranged, and the cross slide 23 is connected between the base 21 and the support platform 3 to adjust the horizontal position of the support platform 3. In addition, in order to be able to adjust the angle to adapt to the installed truss group 1 by rotating the support platform 3 on the base 21, one of the slide rails of the cross slide 23 is fixedly connected to the top wall of the base 21 by screws, and the top wall of the other slide rail is fixedly connected to the second motor 24 by a flange and screws, so that the second motor 24 can slide horizontally on the base 21 through the cross slide 23; the output shaft of the second motor 24 is vertically arranged, and the output shaft of the second motor 24 is fixedly connected to the bottom of the support platform 3 by a key connection, so that the second motor 24 drives the support platform 3 to rotate in the horizontal direction; of course, in this embodiment, the second motor 24 is only provided to drive the support platform 3 to rotate, and other structures that can drive the support platform 3 to rotate can also be used.

[0063] Reference Figure 3The auxiliary support assembly 4 includes a second telescopic support leg 41, a movable seat 42 and a linear drive member 43; the second telescopic support leg 41 includes a second jack 411, a second support pier 412 and a plurality of casters 413; the cylinder of the second jack 411 is fixedly connected to the top wall of the second support pier 412 by screws and flanges, and the piston rod of the second jack 411 is fixedly connected to the bottom wall of the movable seat 42 by screws and flanges; the casters 413 are fixedly connected to the bottom wall of the second support pier 412; the movable seat 42 is a rectangular seat, and each movable seat 42 bottom wall is provided with Four second telescopic support legs 41 are respectively located at the four corners of the moving seat 42 to ensure the balance of the moving seat 42; the moving seat 42 is located on the side of the base 21 in the horizontal direction, and the linear drive member 43 is a structure that can realize linear drive. In this embodiment, the linear drive member 43 is preferably a jack, and the driving direction of the linear drive member 43 is horizontal. One end of the linear drive member 43 is fixedly connected to the moving seat 42, and the other end is fixedly connected to the base 21 to realize the change of the horizontal distance between the base 21 and the moving seat 42.

[0064] Reference Figure 3 、 Figure 4 and Figure 5 In this embodiment, two driving assemblies 5 are provided on each supporting platform 3 to adapt to the overlap of the two lower chord balls 14. In other embodiments, the driving assemblies 5 can also be set to multiple according to the number of lower chord balls 14; the driving assembly 5 includes a gear ring 51, a gear 52 and a first motor 53; the top wall of the supporting platform 3 is a supporting surface, and an annular rotating ring groove 31 is provided on the supporting surface of the supporting platform 3. In this embodiment, the gear ring 51 is an outer gear ring, and the gear ring 51 is coaxially placed in the rotating ring groove 31. In order to ensure that the gear ring 51 rotates smoothly in the rotating ring groove 31, the supporting platform 3 is provided with an annular guide groove 32 on the bottom wall of the rotating ring groove 31, and an annular guide ring 511 is coaxially welded to the bottom wall of the gear ring 51. The guide ring 511 is located in the guide groove 32 and can rotate circumferentially in the guide groove 32. In this embodiment, the longitudinal sections of the guide groove 32 and the guide ring 511 are both dovetail-shaped to match each other to prevent the guide ring 511 from escaping from the guide groove 32. In addition, in this embodiment, the axes of the two gear rings 51 in the two driving assemblies 5 form a virtual plane, the output shaft of the second motor 24 coincides with the virtual plane, and the axes of the two gear rings 51 are symmetrically arranged on both sides of the output shaft of the second motor 24.

[0065] Reference Figure 4 and Figure 5The support platform 3 is provided with a rotating groove 33 on the side of the rotating ring groove 31. The rotating groove 33 is communicated with the rotating ring groove 31. The gear 52 is located in the rotating groove 33, and the gear 52 is engaged with the gear ring 51; the casing of the first motor 53 is fixedly connected to the bottom wall of the support platform 3 by screws, and the output shaft of the first motor 53 is coaxially fixedly connected with the rotating shaft. The rotating shaft is provided in the support platform 3, and the rotating shaft can rotate along the support platform 3. After passing through the support platform 3, the rotating shaft is coaxially fixedly connected to the gear 52 by a key connection, so that the first motor 53 drives the gear 52 to rotate through the rotating shaft.

[0066] Reference Figure 6 The auxiliary pushing assembly 6 includes a connecting piece 61, a third motor 62, a bidirectional screw 63, two sliders 64 and two pushing pieces 65. The connecting piece 61 is fixedly connected to the gear ring 51 to rotate in a circle with the gear ring 51. The long side of the connecting piece 61 is consistent with the tangent direction of its installation position on the gear ring 51; a side wall of the connecting piece 61 close to the axis of the gear ring 51 is provided with a slide groove 611 along its own long side direction; the bidirectional screw 63 is arranged in parallel in the slide groove 611, and both ends are rotatably connected to the end wall of the connecting piece 61; the third motor 62 is a servo motor, and the casing of the third motor 62 is fixedly connected to the outer wall of the connecting piece 61 by screws. After the output shaft of the third motor 62 passes through the end wall of the connecting piece 61 It is coaxially fixedly connected to the bidirectional screw 63 by a key connection; the slider 64 is located in the slide groove 611, and the slider 64 can slide in the slide groove 611 along the long side of the connecting member 61, and the two sliders 64 are each threadedly connected to a threaded segment of the bidirectional screw 63, so that the two sliders 64 are driven to move in opposite directions by the bidirectional screw 63 during rotation; each pusher 65 is welded to a slider 64 to slide along the connecting member 61 with the slider 64; the pusher 65 is used to clamp other structures, so the side of the two pushers 65 that is close to each other is the pushing surface 651 of the pusher 65, and a clamping area 652 for clamping other structures is formed between the pushing surfaces 651 of the two pushers 65.

[0067] Reference Figure 7 and Figure 8 The moving component 7 includes a mounting seat 71, a ball seat 72 and a universal ball 73; the ball seat 72 is welded to the bottom wall of the mounting seat 71, and a ball groove 721 is opened on the bottom wall of the ball seat 72. A portion of the universal ball 73 that is larger than 1 / 2 is located in the ball groove 721 and can rotate freely in all directions in the ball groove 721.

[0068] Reference Figure 7 and Figure 8The supporting platform 3 is used to carry the universal ball 73. For this purpose, a groove 34 is provided on the supporting surface of the supporting platform 3. The groove 34 can be conical or hemispherical. It should be clarified that the hemispherical shape here does not have to be half of a sphere. A sphere that is less than half is also within the scope of the hemispherical shape of this application. Its main purpose is to provide an inclined surface that can guide the universal ball 73 to move to the lowest point. In this embodiment, the groove 34 is preferably hemispherical; therefore, the groove 34 includes a concave pole, which is the lowest point of the groove 34. When the universal ball 73 overlaps the groove wall of the groove 34, the universal ball 73 can slide along the groove wall of the groove 34 to the concave pole with the assistance of gravity.

[0069] Reference Figure 6 、 Figure 7 and Figure 8 The auxiliary pushing assembly 6 is used to clamp the universal ball 73. To this end, the vertical distance from the concave pole to the plane where the pushing surfaces 651 on the two pushing pieces 65 are located is equal; in order to clamp the ball more firmly by the pushing piece 65, a first embedding groove 653 is opened on the pushing surface 651 of the pushing piece 65, and the first embedding groove 653 is adapted to part of the outer wall of the universal ball 73. Specifically, when the universal ball 73 is located at the concave pole of the groove 34 and the two pushing pieces 65 clamp the universal ball 73, the universal ball 73 is adapted to be clamped in the first embedding groove 653; further, when the two pushing pieces 65 clamp the universal ball 73, in order to facilitate guiding the universal ball 73 into the first embedding groove 653, the pushing piece 65 is provided with a rounded corner 654 at the edge of the first embedding groove 653 to form a guiding surface that facilitates the ball to enter the first embedding groove 653.

[0070] Reference Figure 8 and Figure 9 The mounting seat 71 is used to support the truss group 1. To this end, the top wall of the mounting seat 71 is provided with a second embedding groove 711 for embedding the lower chord ball 14 and a third embedding groove 712 for embedding the lower chord rod 12. In this embodiment, there are four third embedding grooves 712, and the four third embedding grooves 712 are evenly distributed along the circumference of the second embedding groove 711, and the third embedding grooves 712 are connected to the second embedding groove 711.

[0071] Reference Figure 8 and Figure 9When the truss group 1 is fixed to the mounting base 71, a fourth embedding groove 713 and a fifth embedding groove 714 are opened on the inner wall of the third embedding groove 712 of the mounting base 71. The mounting base 71 is fixedly connected to an electromagnet 715 in the fourth embedding groove 713. After power is applied, the electromagnet 715 can be adsorbed with the lower chord rod 12 embedded in the third embedding groove 712 to fix the lower chord rod 12 on the mounting base 71; an electric push rod 716 is fixedly connected to the mounting base 71 in the fifth embedding groove 714, and a clamping block 717 is fixedly connected to the push rod of the electric push rod 716. The electric push rod 716 can push the clamping block 717 to slide back and forth in and out of the fifth embedding groove 714; in order to ensure that the clamping block 717 and the electromagnet 715 can clamp the lower chord rod 12, when the lower chord rod 12 is located in the fifth embedding groove 714, the lower chord rod 12 is provided with a clamping block 717 and an electromagnet 715 on both sides of the horizontal direction.

[0072] The implementation principle of a temporary support device for a large-span truss in an embodiment of the present application is as follows: the main support assembly 2 and the auxiliary support assembly 4 are moved to the bottom of the truss group 1 to be installed, and the moving assembly 7 is installed on the truss group 1 to be installed. Finally, the truss group 1 is lifted by a crane so that the universal ball 73 in the moving assembly 7 is overlapped on the support platform 3, and then the universal ball 73 is pushed to the extreme point of the depression by the auxiliary pushing assembly 6. Subsequently, the support platform 3 and the universal ball 73 are moved by the cross slide 23 and the second motor 24 so that the truss group 1 to be installed and the installed truss group 1 are docked.

[0073] When installing the mobile assembly 7 on the truss group 1 to be installed, first use a crane to lift the truss group 1 to be installed to a certain height, wherein the specific height is based on the convenience of allowing personnel standing on the ground to install the mobile assembly 7, usually 1m-1.5m; then, move the mobile assembly 7 below the truss group 1 to be installed, and make the lower chord 12 located in the third embedding groove 712, and the lower chord ball 14 located in the second embedding groove 711, then, energize the electromagnet 715 and the electric push rod 716, while the electromagnet 715 adsorbs the lower chord 12, the electric push rod 716 pushes the clamping block 717 to move, so as to fix the lower chord 12 in the third embedding groove 712, and the connection between the mobile assembly 7 and the truss group 1 to be installed is completed. Next, use a crane to lift the truss group 1 to be installed onto the support platform 3, and then use the auxiliary pushing assembly 6 to move the lower chord ball 14 to the concave extreme point of the groove 34.

[0074] When the auxiliary pusher assembly 6 moves the lower chord ball 14, the third motor 62 drives the bidirectional screw 63 to rotate. Under the guidance of the slide 611, the bidirectional screw 63 will drive the two sliders 64 to move toward the side that is close to each other, and the pusher 65 will move synchronously with the slider 64 toward the side that is close to each other. When the two pushers 65 are close to each other, the first motor 53 drives the gear ring 51 to rotate through the gear 52, so that the auxiliary pusher assembly 6 as a whole performs a circular motion. In the process of the two pushers 65 rotating and approaching each other, the lower chord ball 14 will be gradually pushed to the concave extreme point of the groove 34, so that the lower chord ball 14 is in place. After the lower chord ball 14 is in place, the cross slide 23 and the second motor 24 drive the support platform 3 to move or rotate in the horizontal direction to splice the chord rods and chord balls in the truss group 1 to be installed and the installed truss group 1.

[0075] After a truss group 1 to be installed is spliced, the electromagnet 715 and the electric push rod 716 are powered off to remove the fixed relationship between the moving component 7 and the truss group 1. Subsequently, the first jack 222 and the second jack 411 are moved downward synchronously so that the base 21 drives the moving component 7 to separate from the truss group 1. Subsequently, the main support component 2 is moved to the next position to be installed.

[0076] When moving the main support assembly 2, in order to facilitate the distinction between the two auxiliary support assemblies 4, one of the auxiliary support assemblies 4 is named the first auxiliary support assembly 4 and the other auxiliary support assembly 4 is named the second auxiliary support assembly 4; when moving, the linear drive 43 in the first auxiliary support assembly 4 is extended to make the first auxiliary support assembly 4 move forward as a whole; then the first jack 222 is retracted to separate the first support pier 221 from the ground; then the linear drive 43 in the first auxiliary support assembly 4 is retracted and the linear drive 43 in the second auxiliary support assembly 4 is extended, so that the main support assembly 2 can be pushed toward the side of the first auxiliary support assembly 4, then the first jack 222 is extended to make the first support pier 221 contact with the ground; finally, the linear drive 43 in the second auxiliary support assembly 4 is retracted, so that the second auxiliary support assembly 4 can be moved toward the side of the first auxiliary support assembly 4, thereby completing the movement of the main support assembly 2 and the two auxiliary support assemblies 4.

[0077] The present application also discloses a method for installing a long-span truss, which comprises the following steps:

[0078] S1: The main support assembly 2 is in place, and the moving assembly 7 is fixed to the truss group 1;

[0079] When moving the main support assembly 2, it is necessary to ensure that the universal ball 73 is connected to the concave pole and the truss group 1 to be installed is located in the preset installation position; before moving and fixing it to the truss group 1, first use a crane to lift the truss group 1 to be installed so that personnel can fix the moving assembly 7 to the truss group 1 to be installed;

[0080] S2: Use a crane to hoist the truss assembly 1 into the groove 34 of the support platform 3;

[0081] S3: The universal ball 73 is pushed to move in the groove 34 by the driving assembly 5 and the auxiliary pushing assembly 6, so as to rotate the universal ball 73 to the extreme point of the depression;

[0082] S4: Fix the truss group 1 to be installed on a wall, a beam, a column or an installed truss group 1.

[0083] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A temporary support device for a large-span truss, characterized in that: It comprises a main support assembly (2), a support platform (3) and a moving assembly (7); The support platform (3) is connected to the main support assembly (2), so that the support platform (3) is supported by the main support assembly (2); The support platform (3) is provided with a groove (34) on the support surface, and the groove (34) has a concave extreme point; The moving assembly (7) comprises a mounting seat (71) and a universal ball (73), wherein the universal ball (73) is freely rotatably connected to the mounting seat (71); The groove (34) is used for placing the universal ball (73). When the universal ball (73) is located on the groove surface of the groove (34), the universal ball (73) can slide along the groove surface of the groove (34) to the concave extreme point under the guidance of gravity; It also includes an auxiliary pushing assembly (6), which includes a connecting piece (61) and two pushing pieces (65); The connecting member (61) is connected to the supporting platform (3), one end of the pushing member (65) is slidably connected to the connecting member (61), a clamping area (652) is formed between the supporting platform (3) and the pushing surfaces (651) of the two pushing members (65), and the size of the clamping area (652) is changed by the pushing member (65) sliding along the connecting member (61); The vertical distances between the concave extreme point and the plane where the pushing surfaces (651) of the two pushing members (65) are located are equal.

2. The temporary support device for a large-span truss according to claim 1, characterized in that: The connecting member (61) is connected to the supporting platform (3) in a circumferentially rotatable manner, and the concave pole is located at the center position of the connecting member (61) along the circumferential motion trajectory of the supporting platform (3).

3. The temporary support device for a long-span truss according to claim 2, characterized in that: It also includes a drive assembly (5), wherein the drive assembly (5) includes a gear ring (51), a gear (52) and a first motor (53); The gear ring (51) is connected to the support platform (3) in a circumferentially rotatable manner, and the connecting member (61) is fixedly connected to the gear ring (51) so as to rotate along the support platform (3) along with the gear ring (51); The gear (52) is rotatably connected to the support platform (3), and the gear (52) is meshed with the gear ring (51); The first motor (53) is connected between the support platform (3) and the gear ring (51) to provide power for the gear ring (51) to rotate along the support platform (3).

4. The temporary support device for a large-span truss according to claim 3, characterized in that: The two pushing members (65) are provided with a first embedding groove (653) on the pushing surface (651), and the first embedding groove (653) is adapted to the universal ball (73) so as to allow the universal ball (73) to be embedded.

5. The temporary support device for a long-span truss according to any one of claims 1 to 4, characterized in that: The main support assembly (2) comprises a base (21), a cross slide (23) and a first telescopic support leg (22); The support platform (3) is located above the base (21), and the cross slide (23) is connected between the base (21) and the support platform (3) to drive the support platform (3) to slide along the base (21); The first telescopic support leg (22) is fixedly connected to the base (21) to change the vertical height of the base (21).

6. The temporary support device for a long-span truss according to claim 5, characterized in that: It also includes an auxiliary support assembly (4), wherein the auxiliary support assembly (4) includes a second telescopic support leg (41), a movable seat (42) and a linear drive member (43); The second telescopic supporting leg (41) is fixedly connected to the movable seat (42) to change the height of the movable seat (42); One end of the linear drive member (43) is fixedly connected to the movable seat (42), and the other end is fixedly connected to the base (21) to change the distance between the base (21) and the movable seat (42).

7. The temporary support device for a long-span truss according to claim 6, characterized in that: Two auxiliary support assemblies (4) are provided, and the main support assembly (2) is connected between the two auxiliary support assemblies (4).

8. The temporary support device for a long-span truss according to claim 7, characterized in that: An electromagnet (715) is fixedly connected to the mounting seat (71).

9. A method for installing a long-span truss, using the temporary support device according to any one of claims 1 to 8, characterized in that: The steps include: S1: The main support assembly (2) is in place, and the moving assembly (7) is fixed to the truss assembly (1); S2: hoisting the truss assembly (1) into the groove (34) of the support platform (3); S3: moving the universal ball (73) in the groove (34) so ​​that the universal ball (73) rotates to the concave extreme point; S4: Fix the truss group (1) to be installed on a wall, a beam, a column or an installed truss group (1).

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