Lateral limiting and guiding device for sliding construction of large-span space truss roof

Abstract

The invention relates to a lateral limiting and guiding device for sliding construction of a large-span space truss roof, and belongs to the technical field of large truss structure sliding installation equipment. In order to solve the problems of lateral instability, positioning deviation, sharp increase of friction coefficient and the like of the truss in the existing slippage construction, the device realizes high-precision control through the collaborative design of the guiding assembly, the pushing assembly and the limiting assembly. The device is characterized by comprising a combined structure of a double-row channel steel track and a side stop block so as to resist horizontal thrust; the hydraulic pushing device is connected with the main hydraulic cylinder, and continuous pushing is achieved by combining the one-way locking function. The limiting device adopts the design of alloy steel sliding blocks and oil storage grooves, the channel steel rail is segmented and detachable, and the modular design facilitates quick disassembly and assembly. The device can effectively prevent lateral deviation and overturning in the sliding process of the truss, improves construction safety and positioning accuracy, reduces interference of environmental factors through sealing lubrication, is suitable for efficient and accurate sliding construction of a large-span roof, and has the advantages of being high in construction efficiency, low in cost, high in controllability and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of large-span truss structure sliding installation equipment, and particularly relates to a lateral limit and guiding device for the sliding construction of a large-span space truss roof. Background Art

[0002] The sliding method is one of the common installation methods for large-span roofs. During installation, an aerial assembly platform with a certain width is built, and the roof structure is assembled in blocks on this platform. Specifically, the assembly starts from the distal structure. After each bay is assembled, it is slid one bay, and so on until all the structures are in place. This installation method greatly reduces the workload of aerial operations, improves the quality accuracy, and reduces the safety risks. Summary of the Invention

[0003] Problems to be Solved

[0004] (1) During the installation process, the lateral instability and front-back swaying of the truss structure are serious problems. The construction is difficult, the stability is poor, there are serious potential safety hazards, the precise positioning of the roof cannot be ensured, and it is easy for the roof to deviate from the preset direction.

[0005] (2) The external environment (rain, dust) pollutes the sliding contact surface, resulting in a sharp increase in the friction coefficient, affecting the sliding efficiency and the service life of the equipment. The sealed oil storage cavity of this device can block external pollution.

[0006] The technical solution adopted by the present invention is as follows:

[0007] The object of the present invention is achieved through the following technical solutions:

[0008] A lateral limit and guiding device for the sliding construction of a large-span space truss roof, characterized in that: the guiding device (1) includes a double-row 16a channel steel track (11) welded and fixed to the bottom of the sliding steel beam (12), and side position blocks (13) made of Q355B are welded at equal intervals on both sides of the flange of the channel steel (11); the YS-PJ-100 type hydraulic pusher (2) includes a tightening device (21) and a main hydraulic cylinder (22). The rear part is connected to the guiding device (1) by the tightening device (21), and the front part is hinged to the thrust bearing (4) on the structure to be pushed (3) through a pin shaft (23) and an ear plate (24). The thickness t of the ear plate (24) is 20 mm, and the material is Q355B. The rated thrust of the main hydraulic cylinder (22) is 500 kN, and the stroke accuracy is controlled within ±2 mm; the limiting device (5) includes a copper-based graphite alloy steel slider (51) embedded in the channel steel track (11), and a clamping plate (52) connecting the steel slider (51) and the thrust bearing (4). The thickness t of the clamping plate (52) is 30 mm, and the material is Q355B.

[0009] Furthermore, the lateral limiting and guiding device for the sliding construction of a long-span spatial truss roof is characterized in that the guiding device (1) is designed to be detachable, and the sectional length is ≤ 6m.

[0010] Furthermore, the lateral limiting and guiding device for the sliding construction of a long-span spatial truss roof is characterized in that the interface of the channel steel track (11) adopts a 30° inclined plane transition, and the height of the offset is ≤ 1mm.

[0011] Furthermore, the lateral limiting and guiding device for the sliding construction of a long-span spatial truss roof is characterized in that the side position blocks (13) are welded on both sides of the channel steel track (11) at an interval of 450mm to resist the thrust and horizontal force of the sliding support. The welds of the side position blocks (13) are double-sided fillet welds, and the leg height is not less than 14mm.

[0012] Furthermore, the lateral limiting and guiding device for the sliding construction of a long-span spatial truss roof is characterized in that the jacking device (21) has a one-way locking function. When the main hydraulic cylinder (22) extends, the jacking device (21) works and automatically jacks against the side of the slideway; when the main hydraulic cylinder (22) retracts, the jacking device (21) does not work and moves in the same direction as the main hydraulic cylinder (22).

[0013] Furthermore, the lateral limiting and guiding device for the sliding construction of a long-span spatial truss roof is characterized in that the jacking support (4) is composed of an ear plate (41), a baffle plate (42), a resisting plate (43), and a support stiffening plate (44).

[0014] Furthermore, the lateral limiting and guiding device for the sliding construction of a long-span spatial truss roof is characterized in that the steel slider (51) is made of copper-based graphite alloy, the friction coefficient is ≤ 0.1, and oil storage grooves are opened on the surface, and molybdenum disulfide grease is injected regularly.

[0015] Furthermore, the lateral limiting and guiding device for the sliding construction of a long-span spatial truss roof is characterized in that the sliding construction method of the device includes the following steps:

[0016] (1) Installation of the guiding device: Weld the channel steel track (11) to the bottom of the sliding steel beam (12), and weld and fix the side position blocks (13) at an interval of 450mm.

[0017] (2) Connection of the jacking system: Connect the jacking device (21) of the hydraulic jacking device (2) with the guiding device (1), and pass the pin shaft (23) through the ear plate (24) to connect with the structure to be pushed (3).

[0018] (3) The main hydraulic cylinder (22) extends to push the structure to be pushed (3) to slide along the guiding device (1).

[0019] (4) The main hydraulic cylinder (22) extends continuously to complete a single - stroke propulsion, driving the structure to be pushed (3) to move a set distance.

[0020] (5) The main hydraulic cylinder (22) retracts to release the locking state of the jacking device (21), and synchronously pulls the jacking device (21) to move forward along the guiding device (1).

[0021] (6) After the jacking device (21) is reset, it is locked again, and steps 4 to 6 are cyclically executed to achieve continuous jacking and sliding.

[0022] Advantages of the present invention:

[0023] (1) Through the rigid constraints of the channel steel track and the side - position stop blocks, the present invention can effectively resist the lateral component force caused by the large - span space truss and the overturning moment caused by the traction force, prevent the truss from experiencing lateral instability during the sliding construction, and improve the construction safety.

[0024] (2) The oil - storage grooves are opened on the surface of the steel slider of the present invention, which can reduce friction, facilitate sliding, reduce the interference of environmental factors, and extend the service life of the device.

[0025] (3) The guiding device and the hydraulic jacking system of the present invention work together to achieve high - precision control during the sliding process.

[0026] (4) The guiding device of the present invention is modular, quickly disassembled and assembled, has many working surfaces, little mutual influence, is convenient for disassembly and assembly, saves costs, and improves the construction speed. Description of the drawings

[0027] Figure 1 : Flow chart of the sliding construction process of the large - span space truss roof of the present invention;

[0028] Figure 2 : Elevation view of the sliding construction device of the large - span space truss roof of the present invention;

[0029] Figure 3 : Schematic diagram of the sliding construction device of the large - span space truss roof of the present invention;

[0030] Figure 4 : Schematic diagram of the guiding device for the sliding construction of the large - span space truss roof of the present invention;

[0031] Figure 5 : Schematic diagram of the jacking device for the sliding construction of the large - span space truss roof of the present invention;

[0032] Figure 6 : Side view of the limiting device and the jacking support for the sliding construction of the large - span space truss roof of the present invention;

[0033] Figure 7 : Schematic diagram of the limiting device and the jacking support for the sliding construction of the large - span space truss roof of the present invention;

[0034] In the figure, 1 is the guiding device; 11 is the channel steel track; 12 is the sliding steel beam; 13 is the side stop block; 2 is the hydraulic jack; 21 is the tightening device; 22 is the main hydraulic cylinder; 23 is the pin shaft; 24 is the ear plate; 3 is the structure to be pushed; 4 is the jacking support; 41 is the ear plate; 42 is the baffle; 43 is the abutting plate; 44 is the support stiffening plate; 5 is the limiting device; 51 is the copper-based graphite alloy steel slider; 52 is the clamping plate; Specific implementation mode

[0035] For better explaining the present invention for easy understanding, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings:

[0036] Refer to the attached Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 , Figure 5 As a further improvement of the present invention, the guiding device 1 includes a double-row 16a channel steel track 11 welded and fixed to the bottom of the sliding steel beam 12, and side stop blocks 13 made of Q355B are welded at equal intervals on both sides of the flange of the channel steel 11. The YS-PJ-100 type hydraulic jack 2 includes a tightening device 21 and a main hydraulic cylinder 22. The rear part is connected to the guiding device 1 by the tightening device 21, and the front part is hinged to the jacking support 4 on the structure to be pushed 3 through the pin shaft 23 and the ear plate 24. The thickness t of the ear plate 24 is 20 mm, and the material is Q355B. The rated thrust of the main hydraulic cylinder 22 is 500 kN, and the stroke accuracy is controlled within ±2 mm. The limiting device 5 includes a copper-based graphite alloy steel slider 51 embedded in the channel steel track 11 and a clamping plate 52 connecting the steel slider 51 and the jacking support 4. The thickness t of the clamping plate 52 is 30 mm, and the material is Q355B.

[0037] Refer to the attached Figure 3 As a further improvement of the present invention, the guiding device 1 is designed to be detachable, and the segmented length ≤ 6 m.

[0038] The interface of the channel steel track 11 adopts a 30° inclined plane transition, and the offset height ≤ 1 mm.

[0039] The side stop blocks 13 are welded on both sides of the channel steel track 11 at an interval of 450 mm, which plays a role in resisting the thrust of the sliding support and the horizontal force. The weld of the side stop block 13 adopts double-sided fillet weld, and the leg height is not less than 14 mm.

[0040] Refer to the attached Figure 4 As a further improvement of the present invention, the tightening device 21 has a one-way locking function. When the main hydraulic cylinder 22 extends, the tightening device 21 works and automatically tightens the side of the slideway; when the main hydraulic cylinder 22 retracts, the tightening device 21 does not work and moves in the same direction as the main hydraulic cylinder 22.

[0041] Refer to the appendix Figure 5 As a further improvement of the present invention, the pushing support 4 is composed of an ear plate 41, a baffle plate 42, a resisting plate 43, and a support stiffening plate 44. The thickness t of the ear plate 41 is 20 mm, and the material is Q355B.

[0042] Refer to the appendix Figure 6 As a further improvement of the present invention, the material of the steel slider 51 is copper-based graphite alloy, the friction coefficient is ≤0.1, and oil storage grooves are formed on the surface, and molybdenum disulfide grease is injected regularly.

[0043] Refer to the appendix Figure 7 As a further improvement of the present invention, the sliding construction method of the device includes the following steps:

[0044] (1) Installation of the guiding device: The channel steel track 11 is welded to the bottom of the sliding steel beam 12, and the side stop blocks 13 are welded and fixed at intervals of 450 mm;

[0045] (2) Connection of the pushing system: The tightening device 21 of the hydraulic pusher 2 is connected to the guiding device 1, and the pin shaft 23 passes through the ear plate 24 and is connected to the structure 3 to be pushed;

[0046] (3) The main hydraulic cylinder 22 extends to push the structure 3 to be pushed to slide along the guiding device 1;

[0047] (4) The main hydraulic cylinder 22 continuously extends to complete a single-stroke propulsion, driving the structure 3 to be pushed to move a set distance;

[0048] (5) The main hydraulic cylinder 22 retracts to release the locking state of the tightening device 21, and the tightening device 21 is synchronously towed and moved forward along the guiding device 1;

[0049] (6) After the tightening device 21 is reset, it is locked again, and steps 4 to 6 are cyclically executed to achieve continuous pushing and sliding.

Claims

1. Lateral limit and guiding device for sliding construction of long-span space truss roof, characterized in that: the guiding device (1) includes double-row 16a channel steel rails (11) welded and fixed to the bottom of the sliding steel beam (12), and side position stoppers (13) made of Q355B are welded at equal intervals on both sides of the flange of the channel steel (11); the YS-PJ-100 type hydraulic pusher (2) includes a tightening device (21) and a main hydraulic cylinder (22), the rear part is connected to the guiding device (1) by the tightening device (21), and the front part is hinged to the thrust bearing (4) on the structure to be pushed (3) through a pin shaft (23) and an ear plate (24), the thickness t of the ear plate is 20mm, and the material is Q355B, the rated thrust of the main hydraulic cylinder (22) is 500kN, and the stroke precision is controlled within ±2mm; the limiting device (5) includes a copper-based graphite alloy steel slider (51) embedded in the channel steel rail (11), and a clamping plate (52) connecting the steel slider (51) and the thrust bearing (4), the thickness t of the clamping plate is 30mm, and the material is Q355B.

2. The lateral limit and guiding device for sliding construction of long-span space truss roof according to claim 1, characterized in that: the guiding device (1) is designed to be detachable, and the segmented length ≤ 6m.

3. The lateral limit and guiding device for sliding construction of long-span space truss roof according to claim 1, characterized in that: the interface of the channel steel rail (11) adopts a 30° inclined plane transition, and the height of the stagger ≤ 1mm.

4. The lateral limit and guiding device for sliding construction of long-span space truss roof according to claim 1, characterized in that: the side position stoppers (13) are welded at intervals of 450mm on both sides of the channel steel rail (11) to resist the thrust of the sliding bearing and the horizontal force, and the weld of the side position stopper (13) adopts double-sided fillet weld, and the leg height is not less than 14mm.

5. The lateral limit and guiding device for sliding construction of long-span space truss roof according to claim 1, characterized in that: the tightening device (21) has a one-way locking function. When the main hydraulic cylinder (22) extends, the tightening device (21) works and automatically tightens the side of the slideway; when the main hydraulic cylinder (22) retracts, the tightening device (21) does not work and moves in the same direction as the main hydraulic cylinder (22).

6. The lateral limit and guiding device for sliding construction of long-span space truss roof according to claim 1, characterized in that: the thrust bearing (4) is composed of an ear plate (41), a baffle plate (42), a resisting plate (43), and a bearing stiffening plate (44), the thickness t of the ear plate is 20mm, and the material is Q355B.

7. The lateral limit and guiding device for sliding construction of long-span space truss roof according to claim 1, characterized in that: the material of the steel slider (51) is copper-based graphite alloy, the friction coefficient ≤ 0.1, and oil storage grooves are opened on the surface, and molybdenum disulfide grease is injected regularly.

8. The lateral limit and guiding device for sliding construction of long-span space truss roof according to claim 1, characterized in that: the sliding construction method of the device includes the following steps: (1) Installation of the guiding device: Weld the channel steel track (11) to the bottom of the sliding steel beam (12), and weld and fix the side stop blocks (13) at an interval of 450 mm. (2) Connection of the jacking system: Connect the jacking device (21) of the hydraulic jack (2) to the guiding device (1), and connect the pin shaft (23) to the structure to be pushed (3) through the ear plate (24). (3) The main hydraulic cylinder (22) extends to push the structure to be pushed (3) to slide along the guiding device (1). (4) The main hydraulic cylinder (22) continuously extends to complete a single stroke of propulsion, driving the structure to be pushed (3) to move a set distance. (5) The main hydraulic cylinder (22) retracts to release the locking state of the jacking device (21), and synchronously traction the jacking device (21) to move forward along the guiding device (1). (6) After the jacking device (21) is reset, it is locked again, and steps (1) to (3) are cyclically executed to achieve continuous jacking and sliding.

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