Fabricated box culvert section turnover device and method

Abstract

The invention discloses an assembly type box culvert section turnover device and method.The assembly type box culvert section turnover device comprises a multi-point balance suspension frame, the multi-point balance suspension frame comprises a rectangular base, at least one pair of first connecting rods and at least one pair of second connecting rods are arranged on the base, and the first connecting rods are used for being connected with the lower ends of first steel wire ropes; the upper end of the first steel wire rope is used for being hung on a lifting hook of lifting equipment, each second connecting rod is used for being hung on a second steel wire rope, the upper end of each second steel wire rope is used for being hung on the corresponding second connecting rod, and the lower end of each second steel wire rope is used for being arranged on an assembly type box culvert section in a sleeving mode. The overturning jig frame comprises a high-low table; the supporting shafts are detachably connected to the opposite inner side faces of the assembly type box culvert sections and used for being supported at the two ends of the high table of the overturning jig frame correspondingly, so that the assembly type box culvert sections are overturned with the supporting shafts as supporting points. The use frequency of hoisting equipment is reduced in the prefabrication and installation process of the culvert sections, and the damage probability of the box culvert is reduced.

Description

Technical Field

[0001] The present application belongs to the field of building construction technology, and specifically, relates to a device and method for turning over a prefabricated box culvert section. Background Art

[0002] During the construction of prefabricated box culverts, hoisting, transportation and installation are the last step in the entire construction process, and are also an important link that reflects standardized construction. The quality of the prefabricated culvert segments directly affects the overall assembly quality of the culvert. Traditional hoisting and transportation generally involves multiple flipping and reversing of truss cranes or large lifting equipment. The disadvantage is that the culvert segment components will inevitably collide during multiple reversing processes, resulting in missing edges and corners of the culvert segments, damage to the components at the sockets, and certain damage to the components, which seriously affects the appearance quality of the concrete and the waterproof sealing effect of the box culvert in the later stage. Therefore, it is necessary to study and improve this field and find better solutions. Summary of the invention

[0003] In order to solve the above problems, the present application provides an assembled box culvert section turning device, comprising:

[0004] A multi-point balanced suspension frame comprises a rectangular base, on which at least one pair of first connecting rods and at least one pair of second connecting rods are arranged, wherein the first connecting rod is used to connect with the lower end of a first steel wire rope, the upper end of the first steel wire rope is used to be suspended on a hook of a lifting device, each second connecting rod is used to hang a second steel wire rope, the upper end of the second steel wire rope is used to be suspended on the corresponding second connecting rod, and the lower end of the second steel wire rope is used to connect to the assembled box culvert section;

[0005] Tire turning stand, including high and low platforms;

[0006] A pair of support shafts are detachably connected to the relatively inner side surfaces of the assembled box culvert section and are used to respectively support the two ends on the high platform of the flip tire frame so that the assembled box culvert section flips with the support shafts as the support points.

[0007] Optionally, a pair of first connecting rods are arranged at intervals along the length direction of the base, and a pair of second connecting rods are located on the opposite side of the pair of first connecting rods.

[0008] Optionally, a groove is provided on the top of the platform so that the supporting shaft is placed in the groove.

[0009] Optionally, the base includes two spaced-apart parallel I-beams and a crossbeam welded between the two I-beams, and the first connecting rod and the second connecting rod are rods connected between the crossbeams.

[0010] Optionally, the support shaft includes a support rod, and the ends of the support rod passing through the opposite sides of the culvert are provided with external threads for fastening with a nut.

[0011] Optionally, an inner fixing plate is fixedly connected to the support rod, and an outer fixing plate is sleeved on the support rod. When the support rod passes through the opposite sides of the culvert section, the inner fixing plate and the outer fixing plate respectively abut against the inner and outer sides of the assembled box culvert section, and the nut is used to fix the position of the outer fixing plate.

[0012] Optionally, rubber buffer pads are installed between the contact surfaces of the inner fixing plate, the outer fixing plate and the culvert, and a buffer pad is arranged on the top of the low platform.

[0013] Optionally, the outer circumference of the outer fixing plate has an annular groove for lifting.

[0014] Optionally, the support shaft also includes a double-hole balancing pin, which is located on the side of the inner fixed plate opposite to the external thread. The double-hole balancing pin includes a sleeve and a orifice plate fixedly connected to the outer periphery of the sleeve. The sleeve is rotatably connected to the outer periphery of the support rod, and lifting holes are arranged on the orifice plate in radially relative positions.

[0015] The present application provides a method for turning over a prefabricated box culvert section, using the prefabricated box culvert section turning over device described above to perform the following steps:

[0016] Step S2, a pair of support shafts are respectively installed on opposite inner sides of the culvert section of the assembled box culvert, and ends of the support shafts passing through opposite outer sides of the culvert section are fastened by nuts;

[0017] Step S3, using a multi-point balanced suspension frame in conjunction with a first steel wire rope and a second steel wire rope to suspend the culvert section on a hook, so that the support shaft is supported on the top of the high platform of the overturning tire frame;

[0018] Step S4, move the hook toward the low platform and lower it, so that the balance suspension frame and the culvert section move accordingly, thereby causing the culvert section to tip over and flip onto the low platform until a 90° flip is completed.

[0019] Compared with the prior art, this application has the following beneficial effects:

[0020] The assembled box culvert culvert section flipping device and method provided in the present application, by adopting the above scheme, reduces the frequency of use of lifting equipment during the prefabrication and installation of the culvert section, reduces the probability of damage to the culvert section, and the entire process of flipping the culvert section is carried out on the ground, reducing the loss of lifting equipment, the probability of accidents, and damage to the prefabricated culvert section; and no other structures need to be set up on the site, based on which the equipment is easy to install and dismantle, and is also easy to move with the construction site. The installation method of the present application enables the culvert section to accurately control its position and elevation during the installation process, ensuring that the culvert section can be smoothly installed and connected, while achieving a good waterproof effect, ensuring that the culvert section can be used normally and reach its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the assembled culvert section turning device described in the embodiment of the present application

[0022] Figure 2 This is a schematic diagram of the multi-point balancing suspension frame described in an embodiment of the present application.

[0023] Figure 3 This is a schematic diagram of the tire flipping frame described in an embodiment of the present application.

[0024] Figure 4 This is a schematic diagram of the support shaft described in an embodiment of the present application. DETAILED DESCRIPTION

[0025] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0026] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Among them, "fixed connection" means that the two are connected to each other and the relative position relationship after the connection remains unchanged. "Rotational connection" means that the two are connected to each other and can rotate relative to each other after the connection. The directional terms mentioned in the embodiments of the present application, such as "upper", "lower", "inner", "outer", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0027] A box culvert is a culvert whose tunnel is constructed with reinforced concrete box-shaped pipe sections. It is composed of one or more square or rectangular sections and is usually made of reinforced concrete. An assembled box culvert section is a section used to assemble a box culvert. It can be a section with a rectangular section, or it can be an assembled box culvert section that divides a rectangular section into two U-shaped sections. Two U-shaped assembled box culvert sections can be spliced ​​into a box culvert with a rectangular section. The following description uses a U-shaped assembled box culvert section 100 for illustration, but the present application is also applicable to culvert sections with rectangular sections.

[0028] The assembled culvert section turning device of this embodiment is as follows: Figure 1As shown, it includes a multi-point balanced suspension frame 1, which is a frame structure and is used to disperse the lifting force of the hook of the lifting equipment into at least two suspension nodes; a flip tire frame 2, including high and low platforms, used to support the assembled box culvert section so that it flips from the high platform to the low platform at a certain angle; a support shaft 3 is used to support the high platform of the flip tire frame 2 so that the assembled box culvert section flips with the support shaft 3 as the support point.

[0029] In the past, the lifting of the assembled box culvert section was usually done by simply putting the lower end of the wire rope on the assembled box culvert section, then hanging the upper end of the wire rope on the hook of the lifting equipment, and then lifting the assembled box culvert section. The tension of the wire rope on the assembled box culvert section is a concentrated tension from the lifting point to the hook, and this concentrated tension cannot balance the lifting position of the assembled box culvert section well. In this embodiment, the lower end of the wire rope suspended on the hook is dispersed into multiple suspension nodes through a balancing suspension frame 1, and then the wire ropes of the multiple suspension nodes are connected to the assembled box culvert section, so that the lifting of the assembled box culvert section can be smooth.

[0030] Specifically, the balanced suspension frame 1 is a rectangular frame structure, and may include a base 11 and a connecting rod fixedly connected to the base 11. The base 11 may be welded from a steel section such as an I-beam, and may include two spaced parallel I-beams and a crossbeam 111 welded between the two I-beams.

[0031] A plurality of connecting rods may be provided on the base 11, including a first connecting rod 121 and a second connecting rod 122, both of which may be rods connected between the cross beams 111. The first connecting rod 121 is used to connect with the lower end of a first steel wire rope 123, and the upper end of the first steel wire rope 123 is used to be suspended on a hook of a lifting device. The first connecting rod 121 may be two connecting rods spaced apart along the length direction of the balanced suspension frame 1.

[0032] Each second connecting rod 122 is used to hang a second steel wire rope 124. If there are two second connecting rods 122, a second steel wire rope 124 can be hung on both second connecting rods 122. The upper end of the second steel wire rope is used to hang on the second connecting rod, and the lower end of the second steel wire rope is used to be sleeved on the culvert section of the assembled box culvert for lifting. The so-called sleeved on the culvert section of the assembled box culvert means that the second steel wire rope is sleeved in the U-shaped opening of the culvert section of the assembled box culvert.

[0033] like Figure 2As shown in the figure, two second connecting rods 122 and two first connecting rods 121 are used, and the second connecting rods 122 are located on the opposite side of the two first connecting rods 121. The concentrated tension from the first steel wire rope is dispersed to the second steel wire rope suspended on the second connecting rod 122 by the balanced suspension frame 1, and the two second steel wire ropes can be vertically stressed, which can make the lifting of the assembled box culvert section more stable.

[0034] A pair of support shafts 3 are used to be fixedly connected to the assembled box culvert section. The pair of support shafts 3 can be fixedly installed on the relative inner side surfaces of the assembled box culvert section. Exemplarily, an internal threaded sleeve can be pre-buried on the relative inner side surfaces of the assembled box culvert section, and the support shaft 3 can have an external thread that matches the thread. When in use, the support shaft 3 can be screwed onto the internal threaded sleeve to fix the support shaft 3 on the relative inner side surfaces of the assembled box culvert section. After use, the support shaft 3 can be removed and fixedly connected to the next assembled box culvert section to lift the next assembled box culvert section.

[0035] Or Figure 4 As shown, the support shaft 3 may also pass through the assembled box culvert section, and be fastened by a nut at the end where it passes through, so as to fix the support shaft 3 on the relatively inner side of the assembled box culvert section. Specifically, the support shaft 3 may include a support rod 32, and an external thread is provided at one end of the support rod 32 for fastening with the nut 31. An inner fixing plate 33 is fixedly connected to the support rod 32, and may be welded to the support shaft 3 as a whole. The inner fixing plate 33 is used to abut against the inner side surface of the assembled box culvert section when the support rod 32 passes through the assembled box culvert section, and a rubber buffer gasket may be installed on the contact surface of the inner fixing plate and the culvert section to prevent the contact surface between the support shaft and the culvert section from damaging the appearance of the culvert section due to uneven force during lifting or flipping.

[0036] Furthermore, an outer fixing plate 36 is sleeved on the support rod 32, and the outer fixing plate 36 can slide on the support rod 32. When the support rod 32 passes through the assembled box culvert section, the outer fixing plate 36 abuts against the outer surface of the assembled box culvert section. The outer fixing plate 36 is pushed against the outer surface of the assembled box culvert section by a nut screwed on the external thread of the support rod.

[0037] The support rod 32 is fixed to the assembled box culvert section by clamping the inner fixing plate 33 and the outer fixing plate 36 on the assembled box culvert section, and is turned over along with the assembled box culvert section when turning over.

[0038] The outer circumference of the outer fixed plate 36 has an annular groove, which can be used to transport the assembled box culvert section to the culvert installation position. When the assembled box culvert section is unloaded from the truck, a steel wire rope can be connected and embedded in the annular groove to serve as a multi-point lifting point to bear the force together, thereby reducing the wear of the steel wire rope and placing the prefabricated assembled box culvert section safely and stably on the culvert foundation.

[0039] The tire frame 2 is turned over, and the tire frame 2 is in a "ladder" shape, such as Figure 2 As shown, it includes high and low platforms, and both the high platform 21 and the low platform 22 can be welded by steel sections, and the high platform and the low platform can be fixedly connected as a whole. The high platform is used to support the support shaft 3, and a pair of support shafts 3 are respectively supported at both ends of the high platform, so that the assembled box culvert section is supported on the high platform. When the hook of the equipment moves toward the direction of the low platform, under the tension of the first steel wire rope and the second steel wire rope, the assembled box culvert section will tip over toward the low platform. Since the support shaft 3 is supported on the high platform, it can provide good support to the assembled box culvert section during its tipping process. The assembled box culvert section can tip over smoothly. When the assembled box culvert section flips 90°, it is just supported on the upper end of the low platform to complete the culvert section flipping process.

[0040] In some embodiments, a buffer pad may be provided on the top of the low platform. For example, a discarded tire may be fixed on the top of the low platform, which has a good buffering effect.

[0041] The device is also applicable to culverts with rectangular cross sections, except that the second steel wire rope is passed through the rectangular cross section and hung on the second connecting rod. When flipping, the support shaft can also be supported on a high platform, and the culvert can also flip around the support shaft. No detailed description is given here.

[0042] In some embodiments, the support shaft 3 further includes a double-hole balancing pin 34, which is located on the side of the inner fixing disk 33 opposite to the outer thread. The double-hole balancing pin 34 is rotatably connected to the support rod 32. When in use, it is supported on the platform 21, so that after the support rod 32 is clamped on the assembled box culvert section through the inner fixing disk 33 and the outer fixing disk 36, the support rod and the assembled box culvert section rotate relative to the double-hole balancing pin 34 to complete the flipping. Since the double-hole balancing pin 34 does not rotate, it can avoid the concrete at the flipping location from being damaged due to uneven force.

[0043] The double-hole balance pin 34 includes a sleeve 341 and a perforated plate 342 fixedly connected to the outer periphery of the sleeve 341. The sleeve 341 is rotatably connected to the outer periphery of the support rod 31. The perforated plate 342 can be installed on the outer periphery of the sleeve 341 by, for example, welding, fastener connection, etc. Two lifting holes can be arranged in radially opposite positions on the perforated plate 342. When the assembled box culvert section is transported to the culvert installation position and the assembled box culvert section is unloaded, a U-shaped card is used to pass through the lifting hole and connect the steel wire rope as the lifting point of multi-point lifting, and the assembled box culvert section is placed safely and stably on the culvert foundation under joint force.

[0044] To install the double-hole balancing pin 34 , it can be installed on the support rod 32 through a threaded cover plate 35 at the end to limit the axial movement of the double-hole balancing pin 34 .

[0045] In some embodiments, a polygonal plate 37 may be further provided on the support rod 32, specifically, provided on the support rod 32 between the inner fixing plate 33 and the outer fixing plate 36. The polygonal plate may have the same shape as the reserved hole on the opposite side of the culvert. For example, if the reserved hole on the opposite side of the culvert is square, then the polygonal plate is also square. If the reserved hole is hexagonal, then the polygonal plate is also hexagonal. When in use, the polygonal plate is inserted into the reserved hole, which can effectively connect the culvert and the support rod as one body, so that they can rotate as one body.

[0046] The present application also provides a method for turning over a culvert section of an assembled box culvert, comprising the following steps:

[0047] Step S1: The culvert sections are prefabricated and the strength reaches the design requirements after curing.

[0048] Step S2, reserved holes are provided on the opposite sides of the assembled box culvert section, and the support shaft is installed in the reserved holes of the assembled box culvert section so that the inner fixing plate is in close contact with the inner side of the culvert section, and the outer fixing plate is fixed to the outer side of the culvert section by the nut 31 so that the outer fixing plate is in close contact with the outer side of the culvert section.

[0049] Among them, rubber buffer gaskets can be installed between the contact surfaces of the outer fixing plate, the inner fixing plate and the culvert to prevent the contact surface between the support shaft and the culvert from damaging the appearance of the culvert due to uneven force during lifting or flipping.

[0050] Step S3, use the balanced suspension frame 1 to cooperate with the first steel wire rope and the second steel wire rope to lift the culvert section so that the support shaft is supported on the top of the high platform of the flip tire frame. This process is carried out slowly and the positioning needs to be accurate.

[0051] Preferably, a groove may be provided on the top of the platform, so that the support shaft 3 can be placed in the groove, so that the support shaft can be reliably supported on the top of the platform.

[0052] Step S4, as the hook moves and descends toward the low platform, the balance suspension frame 1 and the culvert follow the movement, and the culvert tilts toward the low platform due to gravity, and as the hook gradually descends, the culvert completely flips onto the low platform, completing a 90° flip.

[0053] Step S5, the culvert section is lifted by using a multi-point balanced suspension frame in conjunction with a plurality of steel wire ropes, stably placed on a transport vehicle, and transported to the construction site for installation of the culvert section.

[0054] Specifically, the culvert section can be lifted stably by connecting the steel wire rope with the lifting hole of the double-hole balancing pin 34 and the annular groove of the outer fixing plate 36 at the same time.

[0055] The device has a simple structure and is easy to operate. It reduces the use of large lifting machinery during the flipping process, can better protect the appearance quality of concrete, and will not affect subsequent assembly construction.

[0056] Of course, the present application may have many other embodiments. Without departing from the spirit and essence of the present application, those skilled in the art may make various corresponding changes and modifications based on the present application, but these corresponding changes and modifications are within the scope of protection of the claims of the present application.

Claims

1. An assembled box culvert section turning device, characterized in that: include: A multi-point balanced suspension frame comprises a rectangular base, on which at least one pair of first connecting rods and at least one pair of second connecting rods are arranged, wherein the first connecting rod is used to connect with the lower end of a first steel wire rope, the upper end of the first steel wire rope is used to be suspended on a hook of a lifting device, each second connecting rod is used to hang a second steel wire rope, the upper end of the second steel wire rope is used to be suspended on the corresponding second connecting rod, and the lower end of the second steel wire rope is used to connect to the assembled box culvert section; Tire turning stand, including high and low platforms; A pair of support shafts are detachably connected to the relatively inner side surfaces of the assembled box culvert section and are used to respectively support the two ends on the high platform of the flip tire frame so that the assembled box culvert section flips with the support shafts as the support points.

2. The assembled culvert section turning device according to claim 1 is characterized in that: A pair of first connecting rods are arranged at intervals along the length direction of the base, and a pair of second connecting rods are located on the opposite side of the pair of first connecting rods.

3. The assembled culvert section turning device according to claim 1 is characterized in that: A groove is arranged on the top of the platform so that the supporting shaft is placed in the groove.

4. The assembled culvert section turning device according to claim 2 is characterized in that: The base comprises two spaced-apart parallel I-beams and a crossbeam welded between the two I-beams, and the first connecting rod and the second connecting rod are rods connected between the crossbeams.

5. The assembled culvert section turning device according to claim 1 is characterized in that: The support shaft comprises a support rod, and the ends of the support rod passing through the opposite sides of the culvert are provided with external threads for fastening with a nut.

6. The assembled culvert section turning device according to claim 5 is characterized in that: An inner fixing plate is fixedly connected to the support rod, and an outer fixing plate is sleeved on the support rod. When the support rod passes through the opposite sides of the culvert section, the inner fixing plate and the outer fixing plate respectively abut against the inner and outer sides of the culvert section of the assembled box culvert, and the nut is used to fix the position of the outer fixing plate.

7. The assembled culvert section turning device according to claim 6 is characterized in that: Rubber buffer pads are installed between the contact surfaces of the inner fixing plate, the outer fixing plate and the culvert joint, and a buffer pad is arranged on the top of the low platform.

8. The assembled culvert section turning device according to claim 6 is characterized in that: The outer circumference of the outer fixing plate is provided with an annular groove for lifting.

9. The assembled culvert section turning device according to claim 6 is characterized in that: The support shaft also includes a double-hole balancing pin, which is located on the side of the inner fixed plate opposite to the external thread. The double-hole balancing pin includes a sleeve and a hole plate fixedly connected to the outer periphery of the sleeve. The sleeve is rotatably connected to the outer periphery of the support rod, and lifting holes are arranged on the hole plate in radially relative positions.

10. A method for turning over a prefabricated box culvert section, characterized in that: Using the assembled culvert section turning device according to any one of claims 1 to 9, the following steps are performed: Step S2, a pair of support shafts are respectively installed on opposite inner sides of the culvert section of the assembled box culvert, and ends of the support shafts passing through opposite outer sides of the culvert section are fastened by nuts; Step S3, using a multi-point balanced suspension frame in conjunction with a first steel wire rope and a second steel wire rope to suspend the culvert section on a hook, so that the support shaft is supported on the top of the high platform of the overturning tire frame; Step S4, move the hook toward the low platform and lower it, so that the balance suspension frame and the culvert section move accordingly, thereby causing the culvert section to tip over and flip onto the low platform until a 90° flip is completed.

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