A movable cradle for installing roof trusses

Abstract

The present invention discloses a movable cradle for installing a roof truss, which belongs to the technical field of truss installation auxiliary frame structures. When the telescopic rod is shortened, the angle between the support rod and the stand is reduced, and the stand gradually descends and rests on the ground on the side of the temporary track. The supporting threaded columns on both sides of the stand can be adjusted respectively to ensure that the stands on both sides are supported on the bottom surface. Through the support of the stand, the stand is in surface contact with the ground, which increases the contact surface between the movable cradle and the ground. Relying on the friction stress between the ground and the stand, it is ensured that the movable cradle will not deviate on the temporary track when it is in a fixed position. This structure does not require other equipment for fixing the stand, and the fixing operation method is simple. The fixed stand is supported by the positioning part, and will neither shake nor deviate along the track direction, thereby ensuring the aligned installation of the roof truss, improving installation efficiency, and reducing installation errors.

Description

Technical Field

[0001] The invention belongs to the technical field of truss installation auxiliary frame structures, and particularly relates to a movable cradle for installing a roof truss. Background Art

[0002] Stadiums, shopping malls, warehouses and other buildings have a spacious indoor environment. They are built with steel frame as the skeleton support. When building the frame structure, it is necessary to build the supporting steel structure of the side wall of the house first, and then build the roof truss on the top of the supporting steel structure. The roof truss needs to be transferred from the steel frame to the construction location in sequence through a mobile tire frame. The mobile tire frame, as a mobile support frame supporting the roof truss, needs to have strong support, flexible mobility, and stability after being fixed in position. More temporary tracks and mobile tire frames are set according to the length of the roof truss. The existing mobile tire frame The frame is built on a temporary track, and the mobile platform is responsible for supporting the bottom of the roof truss and moving the roof truss. When the roof truss is moved to the installation position, the frame stops moving and waits for the roof truss to be fixed. When the roof truss is too long, the roof truss will vibrate and generate deflection force during the installation process. At this time, the mobile platform set on the temporary track will be subjected to force and produce a small offset. Long-term offset may cause the installation position of the roof truss to change, resulting in misalignment and installation. Since the mobile frame must be moved and set on the temporary track, it is difficult to avoid a small offset by directly locking the sliding position. Summary of the Invention

[0003] In view of this, an object of the present invention is to provide a movable tire frame for installing a roof truss, which increases the supporting effect of the tire frame by providing a positioning structure while also preventing the tire frame from deflecting.

[0004] In order to achieve the above object, the present invention provides the following technical solutions:

[0005] The present invention includes a stand, the bottom of the stand is provided with a rail seat slidably mounted on the track, and positioning parts are respectively provided on both sides of the stand, and the positioning part includes two support rods, the support rods are hinged on the side surface of the upper end of the stand, and a stand is rotatably provided between the free ends of the two support rods, and the stand is an isosceles triangle cylinder; it also includes two telescopic rods, the telescopic rod includes an outer tube and an inner tube, one end of the inner tube is slidably mounted in the outer tube, and a rotating shaft is fixed between the two inner tubes, and a bearing seat is provided on the side surface of the lower end of the stand, the rotating shaft is rotatably arranged on the bearing seat, and the ends of the two outer tubes are respectively rotatably provided with sliders, the sliders are slid on the two support rods, and a connecting beam is fixed between the two outer tubes, and it also includes a supporting threaded column, the end of the supporting threaded column is rotatably arranged inside the middle section of the rotating shaft, and the middle section of the supporting threaded column is threadedly connected to the connecting beam.

[0006] Furthermore, a plurality of protruding ridges are arranged along the axis extension direction on the outer side of the stand, a pressure plate is vertically slidably provided inside the stand, a plurality of ejector pins are fixed to the bottom of the pressure plate, and a downward pressure threaded column is also included, the lower end of the downward pressure threaded column is rotatably set in the middle of the pressure plate, the middle section is threadedly connected to the top of the stand, and a pinhole for the ejector pin to pass through is provided on the bottom surface of the stand.

[0007] Furthermore, the outer ends of the supporting threaded column and the pressing threaded column are both fixed with rotating handles.

[0008] Furthermore, the pinholes are evenly located on the bottom surface of the groove between the protruding edges on the bottom surface of the stand.

[0009] Furthermore, a synchronization shaft is fixed between the hinged ends of the two support rods.

[0010] The beneficial effects of the present invention are:

[0011] The present invention further locks the fixed state of the mobile tire frame by arranging positioning parts on both sides; by turning the handle, the supporting threaded column can be rotated, and the supporting threaded column rotates in the middle section of the rotating shaft and produces relative displacement with the connecting beam. At this time, the distance between the connecting beam and the rotating shaft changes, and the length of the two telescopic rods changes; when the movable tire frame moves on the temporary track, the telescopic rod supports the support rod so that the seat at the end of the support rod is suspended in the air. After the movable tire frame determines the position, the handle of the supporting threaded column is turned to shorten the telescopic rod, the angle between the support rod and the stand is reduced, and the stand gradually descends and rests against the side of the temporary track. The support threaded columns on both sides of the frame can be adjusted separately on the ground to ensure that the seats on both sides are supported on the bottom surface. The seats are supported so that the seats are in surface contact with the ground, which increases the contact area between the movable frame and the ground. The friction stress between the ground and the seats is relied on to ensure that the movable frame will not deviate on the temporary track when it is in a fixed position. This structure does not require other equipment to fix the frame, and the fixing operation is simple. The fixed frame is supported by the positioning part and will not shake or deviate along the track direction, thereby ensuring the aligned installation of the roof trusses, improving installation efficiency and reducing installation errors.

[0012] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to make the purpose, technical solutions and beneficial effects of the present invention more clear, the present invention provides the following drawings for illustration:

[0014] Figure 1 This is an overall schematic diagram of a movable tire frame according to an embodiment of the present invention;

[0015] Figure 2 This is a front view of a movable tire frame according to an embodiment of the present invention;

[0016] Figure 3 This is a cross-sectional view of the telescopic rod of an embodiment of the present invention;

[0017] Figure 4 This is an overall schematic diagram of a stand according to an embodiment of the present invention;

[0018] Figure 5 A cross-sectional view of a stand according to an embodiment of the present invention;

[0019] The markings in the accompanying drawings are as follows: 1. Stand; 11. Rail seat; 2. Positioning part; 21. Support rod; 22. Stand; 221. Protruding edge; 223. Pressing plate; 224. Ejector pin; 225. Pressing threaded column; 226. Pinhole; 23. Telescopic rod; 231. Outer cylinder; 232. Inner cylinder; 24. Rotating shaft; 25. Bearing seat; 26. Slider; 27. Connecting beam; 28. Supporting threaded column; 29. ​​Handle; 210. Synchronous shaft. DETAILED DESCRIPTION

[0020] like Figures 1 to 5 As shown, the present invention discloses a movable tire frame for installing a roof truss, comprising a stand 1, a rail seat 11 slidably mounted on a track is provided at the bottom of the stand 1, the rail seat 11 and the track are in contact sliding connection, the movement of the stand 1 is driven by the equipment, and the stand 1 can be ensured to be placed stably on the track without shaking; in order to further ensure the stability of the stand 1 when it stops on the track, positioning parts 2 are provided on both sides of the stand 1, with reference to FIG. Figure 1 The positioning portion 2 includes two support rods 21. The two support rods 21 have the same length and are fixed. The two support rods 21 are thick-walled steel pipes with good supporting performance. A hinge point is provided on the side of the stand 1. The support rod 21 is hinged at the hinge point on the upper side of the stand 1. The two support rods 21 are fixedly connected at the hinge point through a synchronization shaft 210 to ensure the synchronization of the rotation angles of the two support rods 21. A stand 22 is provided for rotation between the free ends of the two support rods 21. Figure 4 As shown, the stand 22 is a triangular column with isosceles acute angles; a rotating shaft is fixed on both sides of the stand 22, and the axis of the rotating shaft coincides with the balance center axis of the stand 22. The two sides of the stand 22 are rotatably arranged at the ends of the corresponding support rods 21. When the stand 22 is in a suspended state, the larger side of the stand 22 faces the horizontal plane and maintains balance; Figure 3As shown, it also includes two telescopic rods 23, and the telescopic rods 23 include an outer tube 231 and an inner tube 232. One end of the inner tube 232 is slidably arranged in the outer tube 231, and a rotating shaft 24 is fixed between the two inner tubes 232. Two bearing seats 25 are provided on the side of the lower end of the stand 1. The rotating shaft 24 is rotatably arranged on the bearing seats 25. The ends of the two outer tubes 231 are respectively rotatably provided with sliders 26, and the sliders 26 are slidably arranged on the two support rods 21. A connecting beam 27 is fixed between the two outer tubes 231, and also includes a supporting threaded column 28. The end of the supporting threaded column 28 is rotatably arranged inside the middle section of the rotating shaft 24, and the middle section of the supporting threaded column 28 is threadedly connected to the connecting beam 27. A handle 29 is also fixed to the end of the supporting threaded column 28.

[0021] like Figure 2 As shown, this mobile tire frame is further locked in the fixed state of the mobile tire frame by providing positioning parts 2 on both sides; by turning the handle 29, the supporting threaded column 28 can be rotated, and the supporting threaded column 28 rotates in the middle section of the rotating shaft 24 and produces relative displacement with the connecting beam 27. At this time, the distance between the connecting beam 27 and the rotating shaft 24 changes, and the length of the two telescopic rods 23 changes; when the mobile tire frame moves on the temporary track, the telescopic rod 23 supports the support rod 21, so that the seat 22 at the end of the support rod 21 is suspended in the air. After the mobile tire frame determines the position, the handle 29 of the supporting threaded column 28 is turned to shorten the telescopic rod 23, reduce the angle between the support rod 21 and the stand 1, and the stand 22 is It gradually descends and rests on the ground on the side of the temporary track. The supporting threaded columns 28 on both sides of the frame 1 can be adjusted respectively to ensure that the seats 22 on both sides are supported on the bottom surface. Through the support of the seats 22, the seats 22 are in surface contact with the ground, which increases the contact surface between the entire movable tire frame and the ground, and relies on the friction stress between the ground and the seats 22 to ensure that the movable tire frame will not deviate on the temporary track when it is in a fixed position. This structure does not require other equipment to fix the frame 1, and the fixing operation is simple. The fixed frame 1 is supported by the positioning part 2, and will neither shake nor deviate along the track direction, ensuring the aligned installation of the roof trusses, improving installation efficiency, and reducing installation errors.

[0022] In a further solution, Figure 4 and Figure 5As shown, the outer side of the stand 22 is provided with a plurality of protruding ridges 221 arranged along the extension direction of the axis, and a pressure plate 223 is vertically slidably provided inside the stand 22, and the four sides of the pressure plate 223 are all against the inner side of the stand 22; a plurality of ejector pins 224 are fixed to the bottom of the pressure plate 223, and also include a downward pressing threaded column 225, the lower end of the downward pressing threaded column 225 is rotatably set in the middle of the pressure plate 223, and the middle section is threadedly connected to the top of the stand 22, and a rotating handle 29 is also fixed to the end of the downward pressing threaded column 225; the bottom surface of the stand 22 is provided with a needle hole 226 for the ejector pin 224 to pass through, and the needle hole 226 is evenly located on the bottom surface of the groove between the protruding ridges 221 on the bottom surface of the stand 22.

[0023] This solution further optimizes the structure of the stand 22 by providing a protruding ridge 221 on the outer side of the stand 22. When the stand 22 rests on the ground, the protruding ridge 221 rests on the ground. Compared with the flat stand 22, the friction coefficient between the stand 22 and the ground is increased, thereby further avoiding the relative displacement between the stand 22 and the ground and improving the anti-slip property of the stand 22. The pressing plate 223 with the ejector pin 224 is moved downward by rotating the pressing thread, so that the ejector pin 224 passes through the bottom surface of the stand 22 and rests on the ground. Several ejector pins 224 anchor the stand 22, thereby further preventing the stand 22 from slipping on the ground.

[0024] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A movable cradle for installing a roof truss, characterized by: The invention comprises a stand (1), wherein the bottom of the stand (1) is provided with a rail seat (11) which is slidably mounted on a track, and positioning parts (2) are respectively provided on both sides of the stand (1), and the positioning parts (2) include two support rods (21), the support rods (21) are hinged to the upper side of the stand (1), and a stand (22) is rotatably mounted between the free ends of the two support rods (21), and the stand (22) is an isosceles triangular column; and further comprises two telescopic rods (23), the telescopic rods (23) include an outer tube (231) and an inner tube (232), one end of the inner tube (232) is slidably mounted in the outer tube (231), and a rotating shaft (24) is fixed between the two inner tubes (232), and a bearing seat (25) is provided on the lower side of the stand (1), and the rotating shaft (24) is rotatably mounted on the bearing seat (25), and the ends of the two outer tubes (231) are respectively rotatably mounted with sliders (2 6), the slider (26) is slidably mounted on the two support rods (21), a connecting beam (27) is fixed between the two outer cylinders (231), and also includes a supporting threaded column (28), the end of the supporting threaded column (28) is rotatably mounted inside the middle section of the rotating shaft (24), and the middle section of the supporting threaded column (28) is threadedly connected to the connecting beam (27); the outer side of the stand (22) is provided with a plurality of protruding ridges (221) arranged along the axis extension direction, and a pressing plate (223) is vertically slidably mounted inside the stand (22), and a plurality of ejector pins (224) are fixed at the bottom of the pressing plate (223), and also includes a pressing threaded column (225), the lower end of the pressing threaded column (225) is rotatably mounted in the middle of the pressing plate (223), and the middle section is threadedly connected to the top of the stand (22), and the bottom surface of the stand (22) is provided with a pinhole (226) for the ejector pins (224) to pass through.

2. The movable cradle for installing the roof truss according to claim 1, characterized in that: The outer ends of the supporting threaded column (28) and the pressing threaded column (225) are both fixedly provided with a rotating handle (29).

3. The movable cradle for installing the roof truss according to claim 1, characterized in that: The needle holes (226) are evenly located on the bottom surface of the groove between the protruding ridges (221) on the bottom surface of the stand (22).

4. The movable cradle for installing the roof truss according to claim 1, characterized in that: A synchronization shaft (210) is fixedly arranged between the hinged ends of the two support rods (21).

Images