A large-span truss assembly structure for a steel structure workshop

Abstract

The present application discloses a large-span truss assembly structure of a steel structure factory, which relates to the technical field of steel structure factories, and comprises a fixed seat, a mobile seat, a connecting plate hinged on the top of the fixed seat, and a plurality of foot brake wheels installed at the bottom of the mobile seat; the connecting plate is bolted to one end of the starting frame; the mobile seat is provided with a supporting device for supporting the end of the starting frame away from the fixed seat; the supporting device comprises a through hole provided on the mobile seat, a mobile rod connected to the top wall of the through hole along a vertical sliding movement, a supporting plate installed on the top of the mobile rod, and a driving mechanism installed on the through hole for driving the mobile rod to move. The present application facilitates the assembly of the starting frame.

Description

Technical Field

[0001] The present application relates to the technical field of steel structure workshops, and in particular to a large-span truss assembly structure of a steel structure workshop. Background Art

[0002] At present, in today's era of rapid industrial development, steel structure workshops have become the mainstream choice of modern industrial buildings due to their unique advantages. As an important infrastructure supporting industrial production activities, steel structure workshops not only embody efficient and flexible design concepts, but also integrate a number of advanced technologies to meet the needs of modern industrial production for safety, economy, environmental protection and intelligence.

[0003] The large-span truss of the steel structure workshop in the prior art generally includes an arc-shaped starting frame and a supporting frame installed at the bottom of the starting frame.

[0004] However, the traditional assembly method of the large-span steel tube truss starting frame generally adopts the scaffold sliding method or the multi-vehicle lifting method. However, when the scaffold sliding construction is adopted, a large amount of frame materials and frame erection costs need to be invested. At the same time, if the sliding process is not synchronized, it is easy to cause the frame to become unstable and damaged; when the multi-vehicle lifting construction is adopted, a large amount of lifting machinery is required, and the synchronization requirements are high during lifting, otherwise it is easy to cause the geometric invariance of the starting unit to be destroyed, affecting the installation quality; in summary, it is inconvenient to assemble the starting frame by adopting the scaffold sliding method or the multi-vehicle lifting method. Summary of the invention

[0005] The present application provides a large-span truss assembly structure for a steel structure workshop, which is convenient for assembling a starting frame and adopts the following technical solutions:

[0006] A large-span truss assembly structure of a steel structure factory building, comprising a fixed seat, a movable seat, a connecting plate hinged to the top of the fixed seat and a plurality of brake wheels installed at the bottom of the movable seat; the connecting plate is bolted to one end of a starting frame; a supporting device for supporting the end of the starting frame away from the fixed seat is installed on the movable seat; the supporting device comprises a through hole opened on the movable seat, a movable rod vertically slidably connected to the top wall of the through hole, a supporting plate installed on the top of the movable rod and a driving mechanism installed on the through hole for driving the movable rod to move.

[0007] First, assemble the lifting units of the starting frame on the ground, and then use a lifting machinery to lift one end of the initial section of the starting frame to the fixed seat, and then bolt the connecting plate to the initial section, so as to form a movable hinge support at the fixed seat, which serves as a rotation support point when assembling the lifting units of the starting frame, and the other end of the initial section is placed on the support plate; after the initial section support is completed, assemble the second section unit of the starting frame, and then use a lifting machinery to lift the initial section and the second section as a whole, and then move the movable seat to the lower chord support point of the second section; then assemble the third section truss unit, assemble, lift, put down, and so on, and repeat the cycle until the assembly of all units of the starting frame is completed and in place; in summary, by adopting the above scheme, it is convenient to assemble the starting frame.

[0008] Preferably, a vertical plate is fixedly connected to the top of the fixing seat, one side of the vertical plate is rotatably connected to a horizontal axis, the connecting plate is sleeved on the horizontal axis, one end of the horizontal axis away from the vertical plate is threadedly connected to a limiting nut, and the connecting plate is located between the limiting nut and the vertical plate.

[0009] By adopting the above scheme, the horizontal shaft is provided, which facilitates the initial section of the starting frame to be connected to the connecting plate for rotation; the limiting nut is provided, which can reduce the possibility of separation of the connecting plate and the horizontal shaft.

[0010] Preferably, the driving mechanism includes a driving motor installed at the bottom of the perforation, a screw installed on the output shaft of the driving motor, a guide rod fixed to the inner wall of the perforation, and a movable plate threadedly connected to the screw and slidably connected to the guide rod; the bottom of the movable rod is fixed to the top of the movable plate.

[0011] By adopting the above scheme, when the height of the support plate needs to be adjusted, the drive motor is started first. At this time, the output shaft of the drive motor drives the screw to rotate, and the rotation of the screw drives the movable plate to move vertically. The vertical movement of the movable plate drives the movable rod to move vertically, and the vertical movement of the movable rod drives the support plate to move vertically, thereby adjusting the height of the support plate. In summary, the set drive mechanism facilitates the adjustment of the height of the support plate.

[0012] Preferably, a plurality of support springs are arranged between the support plate and the movable seat, two ends of each of the support springs are respectively fixed to the opposite inner sides of the support plate and the movable seat, and the support springs are always in a compressed state.

[0013] By adopting the above solution, a plurality of supporting springs are provided, which facilitates supporting the supporting plate.

[0014] Preferably, a buffer device for buffering the starting frame is installed on one side of the fixed seat close to the movable seat.

[0015] By adopting the above solution, the buffer device is provided, which is convenient for buffering the starting frame when the starting frame is separated from the support plate, thereby reducing the possibility of rigid contact between the end of the starting frame away from the fixing seat and the ground.

[0016] Preferably, the buffer device includes a horizontal plate fixedly connected to a side of the fixed seat close to the movable seat, a first buffer rod installed on the horizontal plate, and a first fixed plate installed on the top of the first buffer rod; a plurality of first vertical grooves are opened on the top of the first fixed plate, a first vertical rod is slidably connected in each of the first vertical grooves, a first buffer spring is fixedly connected to the bottom of the first vertical rod, and one end of the first buffer spring away from the first vertical rod is fixedly connected to the bottom of the first vertical groove; a first buffer plate is fixedly connected to the top of the plurality of first vertical rods.

[0017] By adopting the above solution, a plurality of first buffer springs and a first buffer plate are provided, which facilitates buffering of the starting frame.

[0018] Preferably, the transverse plate is provided with a first through hole for the first buffer rod to pass through, a retaining ring is fixedly mounted on the side wall of the first buffer rod, a sliding sleeve is fixedly connected to one side of the fixed seat, the first buffer rod is vertically slidably connected to the sliding sleeve, and a plurality of second buffer springs are arranged between the sliding sleeve and the retaining ring; the bottom of the first buffer rod is fixedly connected to a limiting plate, and a plurality of third buffer springs are arranged between the limiting plate and the sliding sleeve.

[0019] By adopting the above solution, a plurality of second buffer springs and a plurality of third buffer springs are provided, so as to further buffer the starting frame.

[0020] Preferably, a braking device for braking the starting frame is installed on the transverse plate.

[0021] By adopting the above solution, the provided braking device can effectively prevent the starting frame from rotating downward.

[0022] Preferably, the braking device includes a second through hole opened in the transverse plate, a second buffer rod vertically slidably connected to the second through hole, and a second fixed plate fixedly connected to the top of the second buffer rod; the top of the second fixed plate is provided with a plurality of second vertical grooves, and each of the second vertical grooves is slidably connected to a second vertical rod; the tops of the plurality of second vertical rods are fixedly connected to a second buffer plate, and the bottom of the second buffer plate is fixedly connected to a plurality of fourth buffer springs, the top of the second fixed plate is provided with an arc groove, and one end of each of the fourth buffer springs away from the second buffer plate is fixedly connected to the bottom of the arc groove; a limiting mechanism for limiting the second buffer rod and a driving mechanism for driving the second buffer rod to move upward are installed on the transverse plate; the driving mechanism includes a vertical tube rotatably connected to the first through hole, and the outer side wall of the first buffer rod is circumferentially connected to the first through hole A plurality of spiral blocks are fixedly connected in sequence, and a plurality of spiral grooves are sequentially opened on the inner wall of the vertical tube along its circumference, and the plurality of spiral blocks are matched with the plurality of spiral grooves in a one-to-one correspondence; a gear is fixedly connected to the outer wall of the vertical tube, and a rack is meshed on the gear, and a third through hole is opened on the fixed seat, and the rack is slidably connected to the third through hole, and a first horizontal groove is opened on both sides of the third through hole, and a first slider is slidably connected in the first horizontal groove, the first slider is fixed to one side of the rack, a first spring is fixed to one side of the first slider, and one end of the first spring away from the first slider is fixed to the inner wall of one end of the first horizontal groove; a driving block is fixedly connected to one end of the rack away from the fixed seat, and an abutting block is fixedly connected to the bottom of the second buffer rod, and inclined surfaces are respectively provided on the opposite inner sides of the driving block and the abutting block, and the two inclined surfaces match each other.

[0023] By adopting the above scheme, when the first buffer rod moves downward under the action of gravity of the starting frame, the first buffer rod drives the vertical tube to rotate under the action of the spiral block and the spiral groove, the rotation of the vertical tube drives the gear to rotate, the rotation of the gear drives the rack to move, and the rack movement drives the driving block to move. At this time, the driving block drives the abutment block upward under the action of the inclined surface, and the upward movement of the abutment block can drive the second buffer rod to move upward, and the upward movement of the second buffer rod drives the second buffer plate and the fourth buffer spring to move upward, and then the second buffer rod is limited by the limiting mechanism, which makes it easy to brake the starting frame, thereby further reducing the possibility of rigid contact between the end of the starting frame away from the fixed seat and the ground; in summary, the provided braking device makes it easy to brake the starting frame.

[0024] Preferably, the limiting mechanism includes a fourth through hole opened on one side of the second through hole, an insert plate slidably connected to the fourth through hole, a second horizontal groove opened on one side of the fourth through hole, a second slider slidably connected to the second horizontal groove, and a second spring fixedly connected to one side of the second slider; the second slider is fixedly connected to one side of the insert plate; when the second buffer rod is in an initial state, the second spring is in a compressed state, and one end of the second spring away from the second slider is fixedly connected to an inner wall of one end of the second horizontal groove; a slot is opened on one side of the second buffer rod, one end of the insert plate is inserted into the slot, and the other end is fixedly connected to a vertical block; an electric push rod is installed at the bottom of the horizontal plate, and a push block is fixedly connected to the output end of the electric push rod, and the push block abuts against a side of the vertical block close to the horizontal plate.

[0025] By adopting the above scheme, when the second buffer rod moves to align the plug plate with the slot, the second slider drives the plug plate to be plugged into the slot under the action of the second spring, thereby limiting the second buffer rod; when it is necessary to separate the plug plate from the slot, the electric push rod is started first, and the output end of the electric push rod drives the push block to move in the direction close to the vertical block, thereby separating the plug plate from the slot.

[0026] In summary, this application has the following beneficial effects:

[0027] 1. First, assemble the hoisting units of the starting frame on the ground, and then use a lifting machine to lift one end of the initial section of the starting frame to the fixed seat, and then bolt the connecting plate to the initial section, so as to form a movable hinge support at the fixed seat as the rotation support point when assembling the lifting unit of the starting frame, and the other end of the initial section is placed on the support plate; after the initial section support is completed, assemble the second section unit of the starting frame, and then use a lifting machine to lift the initial section and the second section as a whole, and then move the movable seat to the lower chord support point of the second section; then assemble the third section truss unit, assemble, lift, put down, and so on, repeat the cycle until all the units of the starting frame are assembled and in place; in summary, by adopting the above scheme, it is convenient to assemble the starting frame;

[0028] 2. The buffer device is provided to buffer the starting frame when the starting frame is separated from the support plate, thereby reducing the possibility of rigid contact between the end of the starting frame away from the fixed seat and the ground;

[0029] 3. When the first buffer rod moves downward under the action of gravity of the starting frame, the first buffer rod drives the vertical tube to rotate under the action of the spiral block and the spiral groove, the rotation of the vertical tube drives the gear to rotate, the rotation of the gear drives the rack to move, and the rack drives the driving block to move. At this time, the driving block drives the abutment block upward under the action of the inclined surface, and the upward movement of the abutment block can drive the second buffer rod to move upward. The upward movement of the second buffer rod drives the second buffer plate and the fourth buffer spring to move upward, and then the second buffer rod is limited by the limiting mechanism, which makes it easy to brake the starting frame, thereby further reducing the possibility of rigid contact between the end of the starting frame away from the fixed seat and the ground; in summary, the provided braking device is convenient for braking the starting frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present application;

[0031] Figure 2 This is a structural schematic diagram highlighting the supporting device in the embodiment of the present application;

[0032] Figure 3 This is a structural schematic diagram highlighting the buffer device in the embodiment of the present application;

[0033] Figure 4 This is a structural schematic diagram highlighting the braking device in the embodiment of the present application;

[0034] Figure 5 This is a structural schematic diagram highlighting the internal structure of the first fixing plate in the embodiment of the present application;

[0035] Figure 6 This is a structural schematic diagram highlighting the internal structure of the second fixing plate in the embodiment of the present application;

[0036] Figure 7 This is a structural schematic diagram highlighting the spiral block and the spiral groove in the embodiment of the present application.

[0037] Description of the accompanying drawings: 1. Starting frame; 2. Fixed seat; 21. Connecting plate; 22. Vertical plate; 23. Horizontal axis; 24. Limiting nut; 3. Moving seat; 31. Foot brake wheel; 4. Support device; 41. Perforation; 42. Moving rod; 43. Support plate; 44. Driving motor; 45. Lead screw; 46. Guide rod; 47. Moving plate; 48. Support spring; 5. Buffer device; 51. Transverse plate; 511. First through hole; 52. First buffer rod; 53. First fixed plate; 531. First vertical groove; 532. First vertical rod; 533. First buffer spring; 54. First buffer plate; 55. Retaining ring; 56. Sliding sleeve; 57. Second buffer spring; 58. Limiting plate; 59. Third buffer spring; 6. Braking device 61. second through hole; 62. second buffer rod; 63. second fixing plate; 631. second vertical slot; 632. second vertical rod; 633. arc slot; 64. second buffer plate; 65. fourth buffer spring; 7. driving mechanism; 71. vertical tube; 711. spiral slot; 72. spiral block; 73. gear; 74. rack; 75. third through hole; 751. first horizontal slot; 752. first slider; 753. first spring; 76. driving block; 77. abutment block; 78. inclined plane; 8. limiting mechanism; 81. fourth through hole; 811. second horizontal slot; 812. second slider; 813. second spring; 82. plug plate; 83. slot; 84. vertical block; 85. electric push rod; 86. push block. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-7 This application is described in further detail.

[0039] The same parts are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper", "lower", "bottom" and "top" used in the following description refer to directions in the drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0040] This application discloses a large-span truss assembly structure of a steel structure factory building, referring to Figure 1 , including a fixed seat 2, a movable seat 3, a connecting plate 21 hinged to the top of the fixed seat 2 and a plurality of foot brake wheels 31 installed at the bottom of the movable seat 3; the connecting plate 21 is bolted to one end of the starting frame 1; a supporting device 4 is installed on the movable seat 3 for supporting the end of the starting frame 1 away from the fixed seat 2.

[0041] Reference Figure 1A vertical plate 22 is vertically fixed to the top of the fixed seat 2, and a horizontal shaft 23 is horizontally rotatably connected to one side of the vertical plate 22 through a bearing, and a connecting plate 21 is sleeved on the horizontal shaft 23. One end of the horizontal shaft 23 away from the vertical plate 22 is threadedly connected to a limiting nut 24, and the connecting plate 21 is located between the limiting nut 24 and the vertical plate 22. The horizontal shaft 23 is provided to facilitate the initial section of the starting frame 1 to connect with the connecting plate 21 and rotate together; the limiting nut 24 is provided to reduce the possibility of separation between the connecting plate 21 and the horizontal shaft 23.

[0042] Reference Figure 1-Figure 2 The supporting device 4 includes a through hole 41 opened on the moving seat 3, a moving rod 42 connected to the top wall of the through hole 41 along the vertical sliding direction, a supporting plate 43 horizontally installed on the top of the moving rod 42, and a driving mechanism installed on the through hole 41 for driving the moving rod 42 to move; the moving rod 42 is set to pass through the top wall of the through hole 41. First, assemble the hoisting units of the starting frame 1 on the ground, and then use a lifting machinery to lift one end of the initial section of the starting frame 1 to the fixed seat 2, and then bolt the connecting plate 21 to the initial section, so as to form a movable hinge support at the fixed seat 2, which serves as a rotation support point when assembling the hoisting units of the starting frame 1, and the other end of the initial section is placed on the support plate 43; after the initial section support is completed, assemble the second section unit of the starting frame 1, and then use a lifting machinery to lift the initial section and the second section as a whole, and then move the movable seat 3 to the lower chord support point of the second section; then assemble the third section truss unit, assemble, lift, put down, and so on, and repeat the cycle until the assembly of all units of the starting frame 1 is completed and in place; in summary, by adopting the above scheme, it is convenient to assemble the starting frame 1.

[0043] Reference Figure 1-Figure 2 The driving mechanism includes a driving motor 44 installed at the bottom of the through hole 41, a lead screw 45 vertically installed on the output shaft of the driving motor 44, a guide rod 46 vertically fixed to the inner wall of the through hole 41, and a moving plate 47 threadedly connected to the lead screw 45 and vertically slidably connected to the guide rod 46; the guide rod 46 penetrates the moving plate 47, and the bottom of the moving rod 42 is fixed to the top of the moving plate 47. When it is necessary to adjust the height of the support plate 43, the driving motor 44 is started first, and at this time the output shaft of the driving motor 44 drives the lead screw 45 to rotate, and the lead screw 45 rotates to drive the moving plate 47 to move vertically, and the moving plate 47 moves vertically to drive the moving rod 42 to move vertically, and the moving rod 42 moves vertically to drive the support plate 43 to move vertically, so that the height of the support plate 43 can be adjusted; in summary, the driving mechanism is set up to facilitate the adjustment of the height of the support plate 43.

[0044] Reference Figure 1-Figure 2A plurality of support springs 48 are vertically arranged between the support plate 43 and the movable seat 3, and the two ends of each support spring 48 are respectively fixed to the opposite inner sides of the support plate 43 and the movable seat 3, and the support spring 48 is always in a compressed state. The plurality of support springs 48 are arranged to facilitate supporting the support plate 43.

[0045] Reference Figure 3-Figure 5 A buffer device 5 for buffering the starting frame 1 is installed on one side of the fixed seat 2 close to the movable seat 3. The buffer device 5 is provided to buffer the starting frame 1 when the starting frame 1 is separated from the support plate 43, thereby reducing the possibility that the end of the starting frame 1 away from the fixed seat 2 is in rigid contact with the ground.

[0046] Reference Figure 3-Figure 5 The buffer device 5 includes a horizontal plate 51 fixedly connected to the fixed seat 2 near the movable seat 3, a first buffer rod 52 vertically installed on the horizontal plate 51, and a first fixed plate 53 horizontally installed on the top of the first buffer rod 52; a plurality of first vertical slots 531 are provided on the top of the first fixed plate 53, a first vertical rod 532 is vertically slidably connected in each first vertical slot 531, a first buffer spring 533 is vertically fixedly connected to the bottom of the first vertical rod 532, and one end of the first buffer spring 533 away from the first vertical rod 532 is fixedly connected to the bottom of the first vertical slot 531; a first buffer plate 54 is fixedly connected to the top of the plurality of first vertical rods 532. The plurality of first buffer springs 533 and the first buffer plate 54 are provided to facilitate buffering the starting frame 1.

[0047] Reference Figure 3-Figure 5 The horizontal plate 51 is provided with a first through hole 511 for the first buffer rod 52 to pass vertically. A retaining ring 55 is fixedly sleeved on the side wall of the first buffer rod 52. A sliding sleeve 56 is fixedly connected to one side of the fixed seat 2. The first buffer rod 52 is vertically slidably connected to the sliding sleeve 56. A plurality of second buffer springs 57 are arranged between the sliding sleeve 56 and the retaining ring 55. The two ends of each second buffer spring 57 are respectively fixed to the opposite inner sides of the sliding sleeve 56 and the retaining ring 55. The bottom of the first buffer rod 52 is fixedly connected to a limiting plate 58. A plurality of third buffer springs 59 are vertically arranged between the limiting plate 58 and the sliding sleeve 56. The two ends of each third buffer spring 59 are respectively fixed to the opposite inner sides of the sliding sleeve 56 and the limiting plate 58. The plurality of second buffer springs 57 and the plurality of third buffer springs 59 are arranged to further buffer the starting frame 1.

[0048] A brake device 6 for braking the starting frame 1 is installed on the transverse plate 51. The brake device 6 can effectively prevent the starting frame 1 from rotating downward.

[0049] Reference Figure 4 , Figure 6The braking device 6 includes a second through hole 61 opened in the horizontal plate 51, a second buffer rod 62 vertically slidably connected to the second through hole 61, and a second fixed plate 63 fixedly connected to the top of the second buffer rod 62; a plurality of second vertical grooves 631 are opened on the top of the second fixed plate 63, and a second vertical rod 632 is vertically slidably connected in each second vertical groove 631; a second buffer plate 64 is fixedly connected to the top of the plurality of second vertical rods 632, and a plurality of fourth buffer springs 65 are vertically fixedly connected to the bottom of the second buffer plate 64, an arc groove 633 is opened on the top of the second fixed plate 63, and one end of each fourth buffer spring 65 away from the second buffer plate 64 is fixedly connected to the bottom of the arc groove 633; ​​a limiting mechanism 8 for limiting the second buffer rod 62 and a driving mechanism 7 for driving the second buffer rod 62 to move upward are installed on the horizontal plate 51.

[0050] Reference Figure 4 , Figure 6 as well as Figure 7The driving mechanism 7 includes a vertical tube 71 connected to the first through hole 511 by a bearing, and a plurality of spiral blocks 72 are fixedly connected to the outer wall of the first buffer rod 52 in sequence along its circumference, and a plurality of spiral grooves 711 are sequentially provided on the inner wall of the vertical tube 71 in sequence along its circumference, and the plurality of spiral blocks 72 are matched with the plurality of spiral grooves 711 in a one-to-one correspondence; a gear 73 is fixedly connected to the outer wall of the vertical tube 71, and a rack 74 is meshed on the gear 73, and a third through hole 75 is provided on the fixed seat 2, and the rack 74 is slidably connected to the third through hole 75 along the length direction of the horizontal plate 51, and both sides of the third through hole 75 are provided with The first horizontal groove 751, in which the first slider 752 is slidably connected along the length direction of the horizontal plate 51, the first slider 752 is fixed to one side of the rack 74, one side of the first slider 752 is fixed to a first spring 753, and one end of the first spring 753 away from the first slider 752 is fixed to the inner wall of one end of the first horizontal groove 751; the end of the rack 74 away from the fixed seat 2 is fixed to the driving block 76, and the bottom of the second buffer rod 62 is fixed to the abutment block 77, and the driving block 76 and the abutment block 77 are respectively provided with inclined surfaces 78 on the opposite inner sides, and the two inclined surfaces 78 match each other. When the first buffer rod 52 moves downward under the action of gravity of the starting frame 1, the first buffer rod 52 drives the vertical pipe 71 to rotate under the action of the spiral block 72 and the spiral groove 711, and the rotation of the vertical pipe 71 drives the gear 73 to rotate, the gear 73 rotates to drive the rack 74 to move, and the rack 74 moves to drive the driving block 76 to move. At this time, the driving block 76 drives the abutment block 77 to move upward under the action of the inclined surface 78. The upward movement of the abutment block 77 can drive the second buffer rod 62 to move upward, and the second buffer rod 62 moves upward to drive the second buffer plate 64 and the fourth buffer spring 65 to move upward, and then the second buffer rod 62 is limited by the limiting mechanism 8, which makes it easy to brake the starting frame 1, thereby further reducing the possibility of the end of the starting frame 1 away from the fixed seat 2 having rigid contact with the ground; in summary, the provided braking device 6 is convenient for braking the starting frame 1.

[0051] Reference Figure 4The limiting mechanism 8 includes a fourth through hole 81 opened at one side of the second through hole 61, a plug plate 82 slidably connected to the fourth through hole 81 along the length direction of the horizontal plate 51, a second horizontal groove 811 opened at one side of the fourth through hole 81, a second slider 812 slidably connected to the second horizontal groove 811 along the length direction of the horizontal plate 51, and a second spring 813 fixedly connected to one side of the second slider 812; the second slider 812 is fixedly connected to one side of the plug plate 82; when the second buffer rod 62 is in the initial state, the second spring 813 is in a compressed state, and one end of the second spring 813 away from the second slider 812 is fixedly connected to the inner wall of one end of the second horizontal groove 811; a slot 83 is opened at one side of the second buffer rod 62, one end of the plug plate 82 is plugged into the slot 83, and the other end is fixedly connected to a vertical block 84; an electric push rod 85 is horizontally installed at the bottom of the horizontal plate 51, and a push block 86 is fixedly connected to the output end of the electric push rod 85, and the push block 86 abuts against the side of the vertical block 84 close to the horizontal plate 51. When the second buffer rod 62 moves to align the plug plate 82 with the slot 83, the second slider 812 drives the plug plate 82 to plug into the slot 83 under the action of the second spring 813, thereby limiting the second buffer rod 62; when it is necessary to separate the plug plate 82 from the slot 83, the electric push rod 85 is started first, and the output end of the electric push rod 85 drives the push block 86 to move in the direction close to the vertical block 84, thereby separating the plug plate 82 from the slot 83.

[0052] Working principle: first, assemble the hoisting units of the starting frame 1 on the ground, and then use a lifting machinery to lift one end of the initial section of the starting frame 1 to the fixed seat 2, and then bolt the connecting plate 21 to the initial section, so as to form a movable hinge support at the fixed seat 2, which serves as a rotation support point when assembling the hoisting units of the starting frame 1, and the other end of the initial section is placed on the support plate 43; after the initial section support is completed, assemble the second section unit of the starting frame 1, and then use a lifting machinery to lift the initial section and the second section as a whole, and then move the movable seat 3 to the lower chord support point of the second section; then assemble the third section truss unit, assemble, lift, put down, and so on, and repeat the cycle until the assembly of all units of the starting frame 1 is completed and in place; in summary, by adopting the above scheme, it is convenient to assemble the starting frame 1.

[0053] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A large-span truss assembly structure for a steel structure workshop, characterized by: The invention comprises a fixed seat (2), a movable seat (3), a connecting plate (21) hinged to the top of the fixed seat (2), and a plurality of foot brake wheels (31) installed at the bottom of the movable seat (3); the connecting plate (21) is bolted to one end of a starting frame (1); a supporting device (4) is installed on the movable seat (3) for supporting the end of the starting frame (1) away from the fixed seat (2); the supporting device (4) comprises a through hole (41) opened on the movable seat (3), a movable rod (42) connected to the top wall of the through hole (41) in a vertical sliding direction, a supporting plate (43) installed on the top of the movable rod (42), and a driving mechanism installed on the through hole (41) for driving the movable rod (42) to move; A buffer device (5) for buffering the starting frame (1) is installed on one side of the fixed seat (2) close to the movable seat (3); The buffer device (5) comprises a transverse plate (51) fixedly connected to a side of the fixed seat (2) close to the movable seat (3), a first buffer rod (52) installed on the transverse plate (51), and a first fixed plate (53) installed on the top of the first buffer rod (52); a plurality of first vertical grooves (531) are provided on the top of the first fixed plate (53), a first vertical rod (532) is slidably connected in each of the first vertical grooves (531), a first buffer spring (533) is fixedly connected to the bottom of the first vertical rod (532), and one end of the first buffer spring (533) away from the first vertical rod (532) is fixedly connected to the bottom of the first vertical groove (531); a first buffer plate (54) is fixedly connected to the top of the plurality of first vertical rods (532); The transverse plate (51) is provided with a first through hole (511) for the first buffer rod (52) to pass through; a retaining ring (55) is fixedly sleeved on the side wall of the first buffer rod (52); a sliding sleeve (56) is fixedly connected to one side of the fixed seat (2); the first buffer rod (52) is vertically slidably connected to the sliding sleeve (56); a plurality of second buffer springs (57) are arranged between the sliding sleeve (56) and the retaining ring (55); a limit plate (58) is fixedly connected to the bottom of the first buffer rod (52); a plurality of third buffer springs (59) are arranged between the limit plate (58) and the sliding sleeve (56); A braking device (6) for braking the starting frame (1) is installed on the transverse plate (51); The braking device (6) comprises a second through hole (61) provided in the transverse plate (51), a second buffer rod (62) vertically slidably connected to the second through hole (61), and a second fixing plate (63) fixedly connected to the top of the second buffer rod (62); a plurality of second vertical grooves (631) are provided on the top of the second fixing plate (63), and a second vertical rod (632) is slidably connected in each of the second vertical grooves (631); a second buffer plate (64) is fixedly connected to the top of the plurality of second vertical rods (632). ), a plurality of fourth buffer springs (65) are fixedly connected to the bottom of the second buffer plate (64), an arc-shaped groove (633) is provided on the top of the second fixed plate (63), and one end of each of the fourth buffer springs (65) away from the second buffer plate (64) is fixedly connected to the bottom of the arc-shaped groove (633); a limiting mechanism (8) for limiting the second buffer rod (62) and a driving mechanism (7) for driving the second buffer rod (62) to move upward are installed on the transverse plate (51); The driving mechanism (7) comprises a vertical tube (71) rotatably connected to the first through hole (511); the outer wall of the first buffer rod (52) is fixedly connected with a plurality of spiral blocks (72) in sequence along its circumference; the inner wall of the vertical tube (71) is provided with a plurality of spiral grooves (711) in sequence along its circumference; and the plurality of spiral blocks (72) are matched with the plurality of spiral grooves (711) in a one-to-one correspondence; A gear (73) is fixedly connected to the outer wall of the vertical tube (71), and a rack (74) is meshed on the gear (73). A third through hole (75) is provided on the fixed seat (2), and the rack (74) is slidably connected to the third through hole (75). First horizontal grooves (751) are provided on both sides of the third through hole (75), and a first slider (752) is slidably connected in the first horizontal groove (751). The first slider (752) is fixedly connected to one side of the rack (74). The first slider (752) is fixedly connected to one side of the rack (74). A first spring (753) is fixedly connected to one side of the block (752), and one end of the first spring (753) away from the first slider (752) is fixedly connected to the inner wall of one end of the first horizontal groove (751); one end of the rack (74) away from the fixed seat (2) is fixedly connected to a driving block (76), and a contact block (77) is fixedly connected to the bottom of the second buffer rod (62), and inclined surfaces (78) are respectively provided on the opposite inner sides of the driving block (76) and the contact block (77), and the two inclined surfaces (78) match each other; The limiting mechanism (8) comprises a fourth through hole (81) provided on one side of the second through hole (61), a plug plate (82) slidably connected to the fourth through hole (81), a second horizontal groove (811) provided on one side of the fourth through hole (81), a second slider (812) slidably connected to the second horizontal groove (811), and a second spring (813) fixedly connected to one side of the second slider (812); the second slider (812) is fixedly connected to one side of the plug plate (82); when the second buffer rod (62) is in an initial state, the second spring (813) In a compressed state, one end of the second spring (813) away from the second sliding block (812) is fixedly connected to the inner wall of one end of the second horizontal groove (811); a slot (83) is provided on one side of the second buffer rod (62); one end of the plug plate (82) is plugged into the slot (83), and the other end is fixedly connected to a vertical block (84); an electric push rod (85) is installed at the bottom of the horizontal plate (51), and a push block (86) is fixedly connected to the output end of the electric push rod (85), and the push block (86) abuts against a side of the vertical block (84) close to the horizontal plate (51).

2. The large-span truss assembly structure of a steel structure factory building according to claim 1 is characterized by: A vertical plate (22) is fixedly connected to the top of the fixing seat (2), one side of the vertical plate (22) is rotatably connected to a horizontal shaft (23), the connecting plate (21) is sleeved on the horizontal shaft (23), one end of the horizontal shaft (23) away from the vertical plate (22) is threadedly connected to a limiting nut (24), and the connecting plate (21) is located between the limiting nut (24) and the vertical plate (22).

3. The large-span truss assembly structure of a steel structure factory building according to claim 1 is characterized by: The driving mechanism comprises a driving motor (44) mounted on the bottom of the through hole (41), a lead screw (45) mounted on the output shaft of the driving motor (44), a guide rod (46) fixedly connected to the inner wall of the through hole (41), and a moving plate (47) threadedly connected to the lead screw (45) and slidably connected to the guide rod (46); the bottom of the moving rod (42) is fixedly connected to the top of the moving plate (47).

4. The large-span truss assembly structure of a steel structure factory building according to claim 1 is characterized by: A plurality of support springs (48) are arranged between the support plate (43) and the movable seat (3), and two ends of each support spring (48) are respectively fixed to the opposite inner sides of the support plate (43) and the movable seat (3), and the support springs (48) are always in a compressed state.

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